Claims:We claim:

1. A test-rig with adjustable strokes for testing the durability of different automotive components, said test-rig comprising:

• a connecting adapter (2) for holding a component (1);

• a first connecting-pin (3a) fixed with roller bearings for rotatable mounting of said connecting adapter (2) at the first end thereof;

• a connecting link (4) with the first end thereof rotatably mounted at the second end of said first connecting-pin (3a);

• a second connecting-pin (3b) with the first end thereof for rotatable mounting of the second end of said connecting link (4) thereon;

• a motor shaft (5) for secured mounting of a rotating disc (6) thereon; the second end of said second connecting-pin (3b) fixed in a hole (6d) on said rotating disc (6);

wherein said motor shaft (5) driven by an electric motor (M) rotates said rotating disc (6) for converting the rotary motion thereof into a reciprocating motion of a predefined stroke-length or displacement of said connecting link (4) to move said component (1) by a predefined distance for testing the durability of said automotive component (1) thereof.

2. The test-rig as claimed in claim 1, wherein a counter-balance weight (8) is fitted in a hole (6a) provided on said rotating disc (6) to reduce the vibrations by balancing the primary unbalanced forces generated due to the rotating and sliding masses.

3. The test-rig as claimed in claim 1, wherein a counter-rotating disc (7) is positively engaged with said rotating disc (6).
4. The test-rig as claimed in claim 3, wherein a counterbalance weight (8) is fitted in a hole (7a) provided on said counter-rotating disc (7) to reduce the vibrations by balancing both the primary and secondary unbalanced forces generated due to rotating and sliding masses.

5. The test-rig as claimed in claim 4, wherein said counter-rotating disc (7) is rotatably mounted on a shaft (52) supported on a bearing block (9).

6. The test-rig as claimed in claim 5, wherein said shaft (52) comprises a key (55) inserted between a keyway-slot (53) and a keyway (7c) on said counter-rotating disc (7) for a secure rotation thereof rotatably supported on said bearing block (9).

7. The test-rig as claimed in claim 1, wherein said motor shaft (5) comprises a key (54) inserted between a keyway-slot (51) and a keyway (6c) on said rotating disc (6) for a secure rotation of said motor shaft (5) with said rotating disc (6) by an electric motor (M).

8. The test-rig as claimed in claim 1, said test-rig comprises:

• a connecting adapter (2) for securely holding said component (1);

• a first connecting-pin (3a) fixed with roller bearings for rotatable mounting of said connecting adapter (2) at the first end thereof;

• a connecting link (4) with the first end thereof rotatably mounted at the second end of said first connecting-pin (3a);

• a second connecting-pin (3b) with the first end thereof for rotatable mounting of the second end of said connecting link (4) thereon;

• a motor shaft (5) for secured mounting of a rotating disc (6) thereon; the second end of said second connecting-pin (3b) fixed in a hole (6d) on said rotating disc (6); said motor shaft (5) having a key (54) inserted between a keyway-slot (51) and a keyway (6c) on said rotating disc (6) to secure them together for rotation by the electric motor (M);

• a counter-rotating disc (7) is positively engaged with said rotating disc (6); said counter-rotating disc (7) rotatably mounted on a shaft (52) supported on a bearing block (9);

• a respective counterbalance weight (8) fitted in said holes (6a, 7a) on said rotating disc (6) and counter-rotating disc (7) to reduce the vibrations by balancing both the primary and secondary unbalanced forces generated due to rotating and sliding masses;

wherein said motor shaft (5) driven by an electric motor (M) rotates said rotating disc (6) for converting the rotary motion thereof into a reciprocating motion of a predefined stroke-length or displacement of said connecting link (4) to move said component (1) under testing by a predefined distance for testing the durability of said automotive component (1) thereof.

9. The test-rig as claimed in claim 1 or 8, wherein said rotating disc (6) comprises a plurality of holes (6d) at predefined radial distances from the central axis thereof for testing of components requiring different stroke-lengths based on the amplitude of the reciprocating motion of the automotive component (1) under testing for the durability thereof.

10. The test-rig as claimed in claim 9, wherein said first connecting-pin (3a) is customized in shape and size to said component (1) under testing for the durability thereof.

Dated this 23rd day of February 2022.

Digitally / e-Signed.

(SANJAY KESHARWANI)
APPLICANT’S PATENT AGENT
REGN. NO. IN/PA-2043. , Description:FIELD OF INVENTION

The present invention relates to a test-rig for evaluating automobile components. In particular, the present invention relates to a test-rig for evaluating automobile components e.g., piston-rings, engine-liners, shock-absorbers, springs etc. with constant displacement. More particularly, the present invention relates to a test-rig for evaluating different automobile components with constant displacement during the test.

BACKGROUND OF THE INVENTION

Any automobile manufacturing plant requires a variety of components to be tested for different sub-assemblies. For example, it is necessary to evaluate automobile components for the durability test thereof. Normally, such tests are conducted on a durability test-rig having low-speeds.

The presently used hydraulic test set-up facilitates a variable stroke cycle and a single hydraulic actuator can serve different stroke applications. However, the use of this hydraulic test set-up is limited to low-speed applications, with speed-limitation of < 1 m/s or 50 rpm. Moreover, the hydraulic actuator requires a bigger motor and thus necessitates a high-power consumption.

The conventional hydraulic test set-up is also quite heavy and complicated to assemble and thus the maintenance cost is also very high. In addition, it needs continuous lubrication and cooling system or cooling towers for cooling a large quantity of hydraulic oil, which demands larger installation space in the plant. It consists of hydraulic reservoir, a hydraulic positive displacement pump driven by an electric motor, a check valve in the pump delivery line and pressure gauge. A filter is also fitted in pump delivery line to decontaminate oil. Moreover, precision-components like servo-valve and hydraulic-actuator performance is deteriorated over a period. The pressure line is connected to a directional servo valve, which in turn controls a doble-acting hydraulic actuator for controlling the rate of displacement. This hydraulic actuator is connected to the test component to be tested through a connecting-adapter.

Although, different stroke-lengths or displacements are possible with a single hydraulic setup and the stroke-lengths can be actively changed during the test, the conventional hydraulic test-setup has the following limitations:
• Hydraulic oil is heated over a time, so a cooling system is necessary.
• Numerous reciprocating components need constant lubrication.
• Bulky setup necessitates costly maintenance.
• Application is limited for low speed testing only.

Therefore, there is an existing requirement to overcome above disadvantages associated with the conventional durability test-rigs.

STATEMENT OF THE INVENTION

The present invention discloses a test-rig with adjustable strokes for testing the durability of different automotive components, the test-rig comprising: a connecting-adapter; first connecting-pin for rotatably mounting connecting-adapter at one end; a connecting-link with first end thereof rotatably mounted at other end of first connecting-pin; second connecting-pin with first end for rotatable mounting of second end of connecting-link; a motor shaft for securely mounting rotating disc with second end of second connecting-pin fixed thereon; and optionally a counter-rotating disc in positively engagement with rotating disc and rotatably mounted on shaft supported on bearing-block; a counter-balance weight fitted in the rotating disc and optionally in counter-rotating disc; wherein the motor shaft driven by an electric motor rotates the rotating disc to convert rotary motion into reciprocating motion of predefined stroke-length of connecting-link for moving component by a predefined distance for testing the durability thereof.
OBJECTS OF THE INVENTION

Some of the objects of the present invention - satisfied by at least one embodiment of the present invention - are as follows:

An object of the present invention is to provide an improved durability test-rig with adjustable stroke for testing automobile components requiring constant displacement durability testing.

Another object of the present invention is to provide an improved durability test-rig, which is compact in size and easy to assemble and design.

Still another object of the present invention is to provide an improved durability test-rig, which requires less installation space in the manufacturing plant.

Yet another object of the present invention is to provide an improved durability test-rig, which has lower power consumption.

A further object of the present invention is to provide an improved durability test-rig, which does not require any cooling system.

A still further object of the present invention is to provide an improved durability test-rig, which does not require any lubrication system.

One more object of the present invention is to provide an improved durability test-rig, which has lower power consumption.

These and other objects and advantages of the present invention will become more apparent from the following description, when read with the accompanying figures of drawing, which are however not intended to limit the scope of the present invention in any way.

SUMMARY OF INVENTION

In accordance with a first embodiment of the present invention, there is provided a test-rig with adjustable strokes for testing the durability of different automotive components, the test-rig comprising:

• a connecting adapter for securely holding the component;

• a first connecting-pin fixed with roller bearings for rotatable mounting of the connecting adapter at the first end thereof;

• a connecting link with the first end thereof rotatably mounted at the second end of the first connecting-pin;

• a second connecting-pin with the first end thereof for rotatable mounting of the second end of the connecting link thereon;

• a motor shaft for secured mounting of a rotating disc thereon; the second end of the second connecting-pin fixed in a hole on the rotating disc;

wherein the motor shaft driven by an electric motor rotates the rotating disc for converting the rotary motion thereof into a reciprocating motion of a predefined stroke-length or displacement of the connecting link to move the component by a predefined distance at for testing the durability thereof.

Typically, a counter-balance weight is fitted in a hole provided on the rotating disc to reduce the vibrations by balancing the primary unbalanced forces generated due to the rotating and sliding masses.

In accordance with a second embodiment of the present invention, there is also provided a counter-rotating disc is positively engaged with the rotating disc.
Typically, a counterbalance weight is fitted in a hole provided on the counter-rotating disc to reduce the vibrations by balancing both the primary and secondary unbalanced forces generated due to rotating and sliding masses.

Typically, the counter-rotating disc is rotatably mounted on a shaft supported on a bearing block.

Typically, the shaft comprises a key inserted between a keyway-slot and a keyway on the counter-rotating disc for a secure rotation thereof rotatably supported on the bearing block.

Typically, the motor shaft comprises a key inserted between a keyway-slot and a keyway on the rotating disc for a secure rotation of the motor shaft with the rotating disc by an electric motor.

Typically, the test-rig comprises:

• a connecting adapter for securely holding the component;

• a first connecting-pin fixed with roller bearings for rotatable mounting of the connecting adapter at the first end thereof;

• a connecting link with the first end thereof rotatably mounted at the second end of the first connecting-pin;

• a second connecting-pin with the first end thereof for rotatable mounting of the second end of the connecting link thereon;

• a motor shaft for secured mounting of a rotating disc thereon; the second end of the second connecting-pin fixed in a hole on the rotating disc; the motor shaft having a key inserted between a keyway-slot and a keyway on the rotating disc to secure them together for rotation by the electric motor;

• a counter-rotating disc is positively engaged with the rotating disc; the counter-rotating disc rotatably mounted on a shaft supported on a bearing block;

• a respective counterbalance weight fitted in the holes on the rotating disc and counter-rotating disc to reduce the vibrations by balancing both the primary and secondary unbalanced forces generated due to rotating and sliding masses;

wherein the motor shaft driven by an electric motor rotates the rotating disc for converting the rotary motion thereof into a reciprocating motion of a predefined stroke-length or displacement of the connecting link to move the component under testing by a predefined distance at for testing the durability thereof.

Typically, the rotating disc comprises a plurality of holes at predefined radial distances from the central axis thereof for testing of components requiring different stroke-lengths based on the amplitude of the reciprocating motion of the respective component under testing for the durability thereof.

Typically, the first connecting-pin is customized in shape and size to the component under testing for the durability thereof.

BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS

The present invention will be briefly described in the following with reference to the accompanying drawings, in which:

FIGURE 1a shows a perspective view of a first embodiment of the test-rig configured in accordance with the present invention for testing the durability of automotive components operating at high-speeds.

FIGURE 1b shows a side-view of the test-rig shown in Fig. 1a.
FIGURE 1c shows a top-view of the test-rig shown in Fig. 1a.

FIGURE 2a shows a perspective view of the connecting adapter of the test-rig shown in Figure 1a.

FIGURE 2b shows the connecting adapter of Figure 2a, when viewed in the direction of arrow A.

FIGURE 2c shows the connecting adapter of Figure 2a, when viewed in the direction of arrow B.

FIGURE 2d shows a side- view of the connecting adapter of Figure 2a.

FIGURE 3a shows a perspective view of the connecting-pin of the test-rig shown in Figure 1a.

FIGURE 3b shows the front view of the connecting-pin shown in Figure 3a.

FIGURE 3c shows the side view of the connecting-pin shown in Figure 3a.

FIGURE 4a shows a perspective view of the connecting link of the test-rig shown in Figure 1a.

FIGURE 4b shows the front view of the connecting adapter of the test-rig shown in Figure 4a when viewed in the direction of arrow A.

FIGURE 4c shows the top view of the connecting link shown in Figure 4a.

FIGURE 4d shows a sectional view of the connecting link shown in Figure 4a.

FIGURE 5a shows a perspective view of the motor shaft of the test-rig shown in Figure 1a.

FIGURE 5b shows a side view of the motor shaft shown in Figure 5a.

FIGURE 5c shows a sectional view of the motor shaft shown in Figure 5a.

FIGURE 6a shows a perspective view of the rotating disc of the test-rig shown in Figure 1a.

FIGURE 6b shows a sectional view of the rotating disc shown in Figure 6a.

FIGURE 6c shows the side view of the rotating disc shown in Figure 6a.

FIGURE 6d shows the top view of the rotating disc shown in Figure 6a.

FIGURE 7a shows a perspective view of the counter- rotating disc 7 of the test-rig shown in Figure 1a.

FIGURE 7b shows sectional view of the counter-rotating disc 7 of Fig.7a.

FIGURE 7c shows the side view of the counter-rotating disc 7 of Fig. 7a.

FIGURE 7d shows the top view of the counter-rotating disc 7 of Fig. 7a.

FIGURE 8a shows a perspective view of the counter- balance weight 8 of the test-rig shown in Fig. 1a.

FIGURE 8b shows the top-view of the counter- balance weight 8 of Fig. 8a, when viewed in the direction of arrow A.

FIGURE 8c shows the front-view of the counter-balance weight 8 of Fig.8a, when viewed in the direction of arrow B.

FIGURE 8d shows the side-view of the counter-balance weight of Figure 8a, when viewed in the direction of arrow C.

FIGURE 9a shows a perspective view of the bearing block 9 of the test-rig shown in Figure 1a.

FIGURE 9b shows a front-view of the bearing block 9 shown in Figure 9a.

FIGURE 9c shows a top-view of the bearing block 9 shown in Figure 9a.

FIGURE 10a shows a perspective view of the second embodiment of the mechanical test-rig configured in accordance with the present invention for testing the durability of automotive components operating at high-speeds.

FIGURE 10b a side view of the test-rig shown in Figure 10a.

FIGURE 10c shows a top view of the test-rig shown in Figure 10a.

FIGURE 11a shows a schematic arrangement of the conventional low-speed test-rig with a hydraulic set-up requiring cooling system for cooling of hydraulic oil used therein.

FIGURE 11b shows another schematic arrangement of the conventional low-speed test-rig with a hydraulic set-up.

DETAILED DESCRIPTION OF THE INVENTION

In the following, the test-rig configured in accordance with the present invention for durability testing of automotive components will be described in more details with reference to the accompanying drawings without limiting the scope and ambit of the present invention.

FIGURE 1a shows a perspective view of a first embodiment of the first embodiment of the test-rig configured in accordance with the present invention for testing the durability of automotive components operating at high-speeds. The component 1 to be tested is securely mounted on the connecting adapter 2 reciprocating with the first end of a first connecting-pin 3a fixed with roller bearings to make a rotary (pin) joint therebetween. The second end of this connecting-pin 3a is inserted in the first end of the connecting link 4. The second end of this connecting link 4 is inserted with the first end of the second connecting-pin 3b, the second end of which is fixed on the rotating disc 7 mounted on another shaft 5. In order to balance the primary unbalanced forces generated due to rotating and sliding masses, a counterbalance weight 8 is provided, which reduces the vibrations by balancing the generated primary unbalanced forces, which leads to more durable set-up.

FIGURE 1b shows a side view of the test-rig shown in Fig. 1a.

FIGURE 1c shows a top view of the test-rig shown in Fig. 1a.

FIGURE 2a shows a perspective-view of the connecting adapter 2 of the test-rig shown in Fig. 1a.

FIGURE 2b shows the connecting adapter 2 of Fig. 2a, when viewed in the direction of arrow A.

FIGURE 2c shows the connecting adapter 2 of Fig. 2a, when viewed in the direction of arrow B.

FIGURE 2d shows a side-view of the connecting adapter 2 of Fig. 2a.

FIGURE 3a shows a perspective-view of the connecting-pin 3 of the test-rig shown in Fig. 1a.

FIGURE 3b shows the front-view of the connecting-pin 3a-3b shown in Fig. 3a.

FIGURE 3c shows the side-view of the connecting-pin 3a-3b shown in Fig. 3a.

FIGURE 4a shows a perspective-view of the connecting link 4 of the test-rig shown in Fig. 1a.

FIGURE 4b shows the front-view of the connecting link 4 shown in Fig. 4a.

FIGURE 4c shows the top-view of the connecting link 4 shown in Fig. 4a.

FIGURE 4d shows a sectional-view of the connecting link 4 shown in Fig. 4a.

FIGURE 5a shows a perspective-view of the motor shaft 5 of the test-rig shown in Figure 1a. It has a keyway slot 51 made from one end thereof which ends before reaching the other end thereof.

FIGURE 5b shows a side view of the motor shaft 5 shown in Figure 5a.

FIGURE 5c shows a sectional view of the motor shaft 5 shown in Figure 5a.

FIGURE 6a shows a perspective view of the rotating disc 6 of the test-rig shown in Figure 1a. It includes a flanged profile having a 6a for counter-balance weight 8; an internal bore 6b for insertion of motor shaft 5 and having a through internal keyway 6c for placing a key 54 therein for secured locking of rotating disc 6 with the motor shaft 5; another hole 6d for fixing the connecting adapter 2 to be mounted with the component to be tested is mechanically mounted thereon; a flanged portion 6e connected to a hollow circular profile 6f supported on the motor shaft 5. The flange 6e includes a higher thickness and larger width around holes 6a, 6d and keyed internal bore 6b than in the remainder portion thereof.

FIGURE 6b shows a sectional view of the rotating disc 6 shown in Figure 6a and depicts the keyway 6c therein.

FIGURE 6c shows the side view of the rotating disc 6 shown in Figure 6a and depicts flanged portion 6e thereof and holes 6a, 6d as well as bore 6b with keyway 6c formed therein.

FIGURE 6d shows the top view of the rotating disc 6 shown in Figure 6a and depicts the portion with a higher thickness and larger width around holes 6a, 6d and keyed internal bore 6b than in the remainder portion thereof.

FIGURE 7a shows a perspective view of the counter-rotating disc of the test-rig shown in Figure 1a. The construction of this counter-rotating disc 7 is similar to that of the rotating disc 6 shown in Figure 6a and discussed above, except for the absence of hole (6d) for the connecting adapter (2) which are not required here. This counter-rotating disc is supported on a shaft 52 (Fig. 10b) supported in the bearing block 9 and does not require to be connected to the component to be tested as in the rotating shaft 6 (Fig. 6a).

FIGURE 7b shows a sectional view of the counter-rotating disc 7 of Fig.7a.

FIGURE 7c shows a side view of the counter-rotating disc 7 shown in Fig. 7a.

FIGURE 7d shows a top view of the counter-rotating disc 7 shown in Fig. 7a.

FIGURE 8a shows a perspective view of the counter-balance weight 8 of the test-rig shown in Figure 1a. It has flattened portions 81 on two sides thereof for tightening thereof in the holes 6a of the rotating disc 6 and/or counter-rotating disc 7.

FIGURE 8b shows the view of the counter-balance weight 8 shown in Fig. 8a, when viewed in the direction of arrow A.

FIGURE 8c shows the top view of the counter-balance weight 8 shown in Fig.8a, when viewed in the direction of arrow B.

FIGURE 8d shows the side view of the counter-balance weight 8 shown in Figure 8a, when viewed in the direction of arrow C.

FIGURE 9a shows a perspective view of the bearing block 9 of the test-rig shown in Figure 1a. It includes an internal hole 91 for supporting the shaft 5 therein.

FIGURE 9b shows a side view of the bearing block 9 shown in Figure 9a.

FIGURE 9c shows a top view of the bearing block 9 shown in Figure 9a.

FIGURE 10a shows a perspective view of a second embodiment of the test-rig configured in accordance with the present invention for testing the durability of automotive components operating at high-speeds. In this embodiment, in addition to the rotating disc 6 shown in Fig. 1, a counter-rotating disc 7 is also provided for reducing vibrations by balancing the secondary unbalanced forces in addition to the balancing of the primary unbalanced forces generated due to rotating mass and sliding mass. The component 1 to be tested is securely mounted on the connecting adapter 2 reciprocating with the first end of a first connecting-pin 3a fixed with roller bearings to make a rotary (pin) joint therebetween. The second end of this connecting-pin 3a is inserted in the first end of the connecting link 4. The second end of this connecting link 4 is inserted with the first end of the second connecting-pin 3b, the second end of which is fixed on the rotating disc 6 mounted on the motor shaft 5. This rotating disc 6 is positively engaged with the counter-rotating disc 7 rotating on a shaft 52 finally supported on a bearing block assembly 9. Therefore, both the primary and secondary unbalanced forces generated are effectively balanced by this pair of rotating disc 6 and counter-rotating disc 7 positively engaged together and the counterbalance weights 8 mounted thereon to reduce vibrations due to rotating and sliding masses.

FIGURE 10b shows a side-view of the test-rig shown in Fig. 10a.

FIGURE 10c shows a top-view of the test-rig shown in Fig. 10a.

FIGURE 11a shows a schematic arrangement of the conventional low-speed test-rig with a hydraulic set-up requiring cooling system for cooling of hydraulic oil used therein. It includes a motor M with a motor axis MA and connected via a coupling C to fixed mounting FM carrying a rotating circular disc CD, which in turn carries a pin on plate PP on which the first end of a connecting link CL reciprocates and at the other end thereof another connecting-pin CP connected to the test component TP is reciprocating R by means of a hydraulically driven piston-cylinder arrangement. This hydraulic system requires constant cooling and lubrication provided by a cooling system CS having the inlet and outlet thereof connected to the cylinder at either end thereof.

FIGURE 11b shows another schematic arrangement of the conventional low-speed test-rig with a hydraulic set-up. Here, a double-acting hydraulic actuator DAHA is depicted connected to the component to be tested TC, for example a damper. An electric motor M is coupled to a variable displacement pump P for operating this test rid. The hydraulic oil is stored in a hydraulic accumulator HA fitted with a pressure gauge PG. This hydraulic accumulator supplies hydraulic oil to a pump delivery line DL connected between pump P and a directional servo valve SV via a check valve CV. A filter F is connected between the check valve CV and the servo-valve SV for decontaminating the hydraulic oil before supply thereof to servo valve SV. This servo valve SV along with the hydraulic actuator HA are highly sensitive, precision-manufactured assemblies, which may otherwise get deteriorated over time by any contaminations present in the oil, if filter F is not used. The pump P is also connected to servo valve SV via a pressure line PL. Since hydraulic oil gets heated over long periods of operation, this conventional test-rig needs a cooling system (Fig. 11a). Moreover, there are numerous reciprocating components in this test-rig, which also require constant lubrication.

Therefore, the conventional low-speed test-rig with a hydraulic set-up discussed above requiring both the oil cooling system and lubrication system as well as several reciprocating components is bulky as well as expensive to manufacture, assemble, operate and maintain.

WORKING OF THE INVENTION

Any reciprocating component which needs to be tested for its durability (due to wear & tear over long periods of operation) can be tested with the help of this improved test-rig setup configured in accordance with the present invention. In this setup, the rotating disc 6 is fixed to electric motor M with the help of the arrangement of the keyway 6c on rotating shaft 6 and the keyway slot 51 on the motor shaft 5. Rotating disc 6 can be made with multiple holes 6d at different radial distances from shaft 5 axis.

Based on the amplitude of reciprocating motion (required stroke-length/displacement) of the test component TC, the first end of the connecting link 4 is connected to relevant hole 6d on the rotating disc 6 (2 times the radial distance of hole is equal to the amplitude of the reciprocating motion) with the help of a first connecting-pin 3a. The second end of connecting link 4 is connected to the connecting adapter 2 with the help of a second connecting-pin 3b. Both connecting -ins 3a-3b are fixed with roller bearings on which connecting link 4 fits to make a respective rotary (pin) joint therebetween. The relevant test component TC (for example: piston with rings, damper, spring, hydraulic actuators etc.) is now connected to connecting adapter 2, which can also be customized (in different sizes and shapes) based on the test component TC.

Once electric motor M starts rotating, the rotating disc 6 also rotates therewith.
This now functions as a slider-crank mechanism, in which the rotating disc 6 with hole 6d acts as a crank and the test-component TC along with the connecting adapter 2 acts as a slider. This crank and slider are connected by connecting link to form a crank and slider mechanism, which basically converts the rotary motion of electric motor M and rotating disc 6 into a reciprocating straight line motion for testing the durability of this test-component TC (due to wear & tear over long periods of operation thereof).
TECHNICAL ADVANTAGES AND ECONOMIC SIGNIFICANCE

The test-rig with adjustable strokes configured for testing the durability of automotive components in accordance with the present invention offers the following advantages:

- Lightweight, compact and simple to assembly and low in maintenance.

- Requires lower power.

- No cooling system required.

- Continuous lubrication not required.

- Suitable even for testing of components at high-speed.

The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments.

It is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the invention and not as a limitation. The exemplary embodiments described in this specification are intended merely to provide an understanding of various manners in which these may be used and to further enable the skilled person in the relevant art to practice this invention.

Although, the embodiments presented in this disclosure have been described in terms of its preferred embodiments, the skilled person in the art would readily recognize that these embodiments can be applied with modifications possible within the spirit and scope of the present invention as described in this specification by making innumerable changes, variations, modifications, alterations and/or integrations in terms of materials and method to configure, manufacture and assemble various constituents, components, subassemblies and assemblies, in terms of sizes, shapes, orientations and interrelationships without departing from the scope and spirit of the present invention.

Throughout this specification, the word “comprise”, or variations such as “comprises” or “comprising”, shall be understood to imply including a described element, integer or method step, or group of elements, integers or method steps, however, does not imply excluding any other element, integer or step, or group of elements, integers or method steps.

The use of the expression “a”, “at least” or “at least one” shall imply using one or more elements or ingredients or quantities, as used in the embodiment of the disclosure in order to achieve one or more of the intended objects or results of the present invention.

In the description, relative terms such as “lower”, “upper”, “horizontal”, “vertical”, “above”, “below”, “up”, “down”, “top”, and “bottom” as well as derivatives thereof (e.g. “horizontally”, “inwardly”, “outwardly”; “downwardly”, “upwardly” etc.) should be construed to refer to the orientation as then described or as shown in the drawing under discussion. These relative terms are for convenience of description and do not require that the corresponding apparatus or device be constructed or operated in a particular orientation.

Terms concerning attachments, coupling and the like, such as “connected” and “interconnected”, refer to a relationship, wherein structures are secured or attached to one another either directly or indirectly through intervening structures, as well as both movable or rigid attachments or relationships, unless expressly described otherwise.