Claims:

1. A visual alarm system (100) for heavy machinery, the visual alarm system (100) comprising:
a proximity sensor (102) provided in proximity to a hydraulic lever (104) of a heavy machine;
a relay switch (106) connected in series with the proximity sensor (102), and
one or more lightning devices (108) connected in series with the relay switch (106) and mounted on an outer panel of the heavy machine, wherein the one or more lightning devices (108) are activated to generate visual alarm when the proximity sensor (102) senses the movement of the hydraulic level of the heavy machine.
2. The visual alarm system (100) as claimed in claim 1, wherein the visual alarm system is connected to a battery source (110) to derive power for operation.
3. The visual alarm system (100) as claimed in claim 1, wherein the proximity sensor (102) senses the movement of the hydraulic lever during locking and unlocking of a hydraulic system of the heavy machine.
4. The visual alarm system (100) as claimed in claim 3, wherein when the hydraulic lever (104) is in proximity of the proximity sensor (102), the relay switch (106) gets activated, turning on the visual alarm.
5. The visual alarm system (100) as claimed in claim 1, wherein the relay switch is OFF during a lock position of the hydraulic lever and the relay switch (106) is ON during an unlocked position of the hydraulic lever.
6. The visual alarm system (100) as claimed in claim 5, wherein the one or more lighting devices are activated when the relay switch is ON. , Description:TECHNICAL FIELD
[0001] The present disclosure described herein, in general, relates to heavy machinery or equipment used in construction or manufacturing units and in particular, relates to a visual alarm system to alert maintenance crew during maintenance of the heavy machinery.
BACKGROUND
[0002] Background description includes information that may be useful in understanding the present disclosure. It is not an admission that any of the information provided herein is prior art or part of the presently claimed subject matter.
[0003] Heavy machinery or equipment refers to heavy-duty vehicles, specially designed for executing construction or manufacturing tasks, most frequently ones involving earthwork operations or other large construction or manufacturing tasks. Heavy equipment or machineries are employed in construction or manufacturing units to perform activities such as excavation, lifting, hammering, backhoeing, etc.
[0004] In the steel manufacturing industry, in particular, heavy machineries such as pneumatic hammer machines, are used to clear vessels of steel mills that gets depleted with slag and other steel impurities. These machines often are operated at extreme surrounding temperatures and conditions that may damage parts of the machine and such damages could lead to major accidents during operation of the heavy equipment. Hence, regular and continuous maintenance of these heavy machines are much needed and are inevitable to prevent repair of machine, failure of operation or accidents.
[0005] During maintenance of the heavy machines, a maintenance crew visits the machinery site for manual testing and checking of parts of the heavy machines. To check arm(s) or other parts of the heavy machines, few crew members of the maintenance crew are required to go beneath the machinery or are required to stand in proximity of the arm of the heavy machines. Such a situation of the maintenance crew is prone to accidents as the crew members have to conduct tests both in operational as well as non-operational conditions of the heavy machines.
[0006] During an operational condition, a heavy machine is operated by pulling a hydraulic lever provided inside a driving cabin of the heavy machine. After pulling the hydraulic lever, arm of the heavy machine is triggered for performing to and fro motion. Such to and fro motion of the arm could risk life of the maintenance crew if the crew members are not alarmed that the heavy machine is being operated from the driving cabin and that a safe distance is to be maintained. Therefore, an alarming system is required to alert the maintenance crew that the heavy machine is being operated and they have to maintain a safe distance from the heavy machine.
[0007] Yet further, during the on-site maintenance of the heavy machine, noise from operating machines and other equipment are very loud and high and thus an audio alarm system is incapable to alert the maintenance crew as an audio alarm signal could easily be misunderstood as noise and may be ignored.
[0008] In view of the above, there is a need to provide a visual alarm system in heavy machines and thereby preventing accidents.

OBJECTS OF THE DISCLOSURE
[0009] Some of the objects of the present disclosure, which at least one embodiment herein satisfy, are listed hereinbelow.
[0010] It is a general object of the present disclosure to provide a visual alarm system in heavy machineries / heavy equipment.
[0011] Another object of the present disclosure is to provide a visual alarm system to prevent accidents during maintenance of heavy machineries.
[0012] Yet another object of the present disclosure is to provide a visual alarm system that accurately senses operation of machinery and outputs a visual signal.
[0013] Still another object of the present disclosure is to provide a visual alarm that is simple in design and easy to be installed in any heavy equipment.
[0014] Yet another object of the present disclosure is to provide a visual alarm that does not require any external power supply.
[0015] Another object of the present disclosure is to provide a visual alarm system that is cost-effective.
[0016] These and other objects and advantages will become more apparent when reference is made to the following description and accompanying drawings.

SUMMARY
[0017] This summary is provided to introduce concepts related to an alarm system in heavy machineries or heavy equipment. The concepts are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.
[0018] The subject matter disclosed herein relates to a visual alarm system for heavy machineries. The alarm system comprises a proximity sensor that is provided in proximity to a hydraulic lever of a heavy machine. The visual alarm system further comprises a relay switch connected in series with the proximity sensor and one or more lightning devices. The one or more lightning device is connected in series with the relay switch. The one or more lightning device is mounted on an outer panel of the heavy machine. The one or more lightning devices are activated to generate visual alarm when the proximity sensor senses the movement of the hydraulic lever of the heavy machine.
[0019] In an aspect, the visual alarm system is connected to a battery source to derive power for operation.
[0020] In an aspect, the proximity sensor senses movement of the hydraulic lever during locking and unlocking of a hydraulic system of the heavy machine.
[0021] In an aspect, the relay switch is OFF during a lock position of the hydraulic lever and the relay switch is ON during an unlocked position of the hydraulic lever.
[0022] In an aspect, the one or more lighting devices are activated when the relay switch is ON.
[0023] In an aspect, when the hydraulic lever is in proximity of the proximity sensor, the relay switch gets activated, turning on the visual alarm
[0024] Various objects, features, aspects, and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawing figures in which like numerals represent like components.

BRIEF DESCRIPTION OF THE DRAWINGS
[0025] It is to be noted, however, that the appended drawings illustrate only typical embodiments of the present subject matter and are therefore not to be considered for limiting of its scope, for the invention may admit to other equally effective embodiments. The detailed description is described with reference to the accompanying figures. The illustrated embodiments of the subject matter will be best understood by reference to the drawings, wherein like parts are designated by like numerals throughout. The following description is intended only by way of example, and simply illustrates certain selected embodiments of devices, systems, and methods that are consistent with the subject matter as claimed herein, wherein:
[0026] FIG. 1 illustrates a circuit block diagram of a visual alarm system in accordance with an exemplary embodiment of the present disclosure.

DETAILED DESCRIPTION
[0027] The detailed description of various exemplary embodiments of the disclosure is described herein with reference to the accompanying drawings. It should be noted that the embodiments are described herein in such details as to clearly communicate the disclosure. However, the amount of details provided herein is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present disclosure as defined by the appended claims.
[0028] It is also to be understood that various arrangements may be devised that, although not explicitly described or shown herein, embody the principles of the present disclosure. Moreover, all statements herein reciting principles, aspects, and embodiments of the present disclosure, as well as specific examples, are intended to encompass equivalents thereof.
[0029] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises”, “comprising”, “includes” and/or “including,” when used herein, specify the presence of stated features, integers, steps, operations, elements and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groups thereof.
[0030] It should also be noted that in some alternative implementations, the functions/acts noted may occur out of the order noted in the figures. For example, two figures shown in succession may, in fact, be executed concurrently or may sometimes be executed in the reverse order, depending upon the functionality/acts involved. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which example embodiments belong. It will be further understood that terms, e.g., those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
[0031] Embodiments disclosed herein relate to a visual alarm system for heavy machinery or heavy machine. A heavy machine is a machine which is employed in factories or construction site to perform activities such as excavation, hammering, and the like. For carrying out such activities, a machine is provided with a long arm mounted with operating tool. The heavy machine requires regular maintenance and checking to prevent accidents during operation that may occur due to failure of parts of the machine, to avoid repair or exchanging parts of machine, to prolong the lifeline of the machine, and so forth. The maintenance is generally performed on-site of heavy machines. The maintenance is performed by maintenance crew that generally works in the proximity to arm of the heavy machine and is at risk as an operator sitting in driving cabin of the heavy machine may perform hydraulic operation of the heavy machine to check the working of the heavy machine. In the heavy machine, there is no in-built alarm system that could alert maintenance crew about operating condition of the hydraulic system of the heavy machine. Therefore, an alarm system is much required in the heavy machines.
[0032] However, an audio alarm is not suitable to solve the present problem as the on-site has inevitable loud noise. Therefore, a visual alarm system is proposed and disclosed in the present disclosure.
[0033] FIG. 1 shows a circuit block diagram of a visual alarm system 100 that is installed in a heavy machine, as per an exemplary embodiment of the present disclosure. The visual alarm system 100 includes a proximity sensor 102 provided in near proximity to a hydraulic lever 104 of the heavy machine. In an example, the proximity sensor 102 is one of a capacitive proximity sensor, a photoelectric proximity sensor, and an inductive proximity sensor.
[0034] The proximity sensor 102 is connected in series to a relay switch 106 at one end and the other end of the proximity sensor 102 is grounded to the Earth. The relay switch 106 is further connected in series to one or more lightning device 108 at one end and the other end of the relay switch 106 is grounded to the Earth. The relay switch 106 in the preferred embodiment consists of a parallel combination of a capacitor and inductor, but without limiting the scope of the present disclosure the relay switch could be of any type such as MOSFET, transistor, IC, and the like.
[0035] Further, the other end of the one or more lightning device 108 is also grounded to the Earth to achieve grounding. The one or more lightning devices 108 are mounted on an outer panel of the heavy machine. The one or more lightning devices 108 are in general installed externally at the front-top portion of the driving cabin of the heavy machine. The visual alarm system 100 formed by the components described herein is further connected to a battery source 110 to derive power. The battery source 110 may be an auxiliary battery or a main battery of the heavy machine.
[0036] In operation, the proximity sensor 104 senses the movement of hydraulic lever 104 of the heavy machine and sends signal to the relay switch 106. When the hydraulic lever 104 is at unlocked position that means the lever 104 is being operated and is to cause movements in the arm of the heavy machine, the relay switch 106 gets ON. The relay switch 106 further activates the visual alarm system 100 by activating the one or more lightning devices 108. The glowing of the one or more lightning devices 108 outputs a visual indication and alarms maintenance crew working in the proximity to the heavy machine that it is under operation and they are required to be at a safe distance from the machine.
[0037] As per another implementation of the present disclosure, the relay switch 106 can be manually switched ON by an operator who is inside the driving cabin of the heavy machine. The manual switching of the relay switch 106 is useful in the situation where the hydraulic lever 104 gets stuck and no movement is being made, generating a false OFF signal to the visual alarm system 100. In such a scenario, the maintenance crew members are endangered as the arm of the heavy machine could make to-fro motion anytime due to failure of hydraulic lever 104.
[0038] As per another embodiment of the present disclosure, the proximity sensor 102 may be coupled with a Programmable Logic Controller (PLC) that sends a signal to switch OFF or switch ON the relay switch 106, based on the data sensed by the proximity sensor 102. The PLC may be configured in such a manner that it reads the data sensed by the proximity sensor 102 as well as distinguish faulty operation of hydraulic lever 104 and sends signal to the relay switch 106 to activate the one or more lightning device 108, thereby preventing accidents in case of failure of hydraulic system.
TECHNICAL ADVANTAGES
[0039] The present disclosure provides a visual alarm system for heavy machinery that sends visual alarm.
[0040] The present disclosure provides a visual alarm system that prevents major accidents during maintenance of heavy machineries by generating a visual alarm to the maintenance crew.
[0041] The present disclosure provides a visual alarm system that is capable to transmit an alert signal during on-site maintenance of heavy equipment without failure of being misunderstood.
[0042] The present disclosure provides a visual alarm system that is simple in design and cost-effective.
[0043] The present disclosure provides a visual alarm system that is easy to be installed in heavy machinery without any modification.
[0044] The present disclosure provides a visual alarm system that is utilized less power and power is derived from a battery source, either a separate battery source or battery source of heavy machinery.
[0045] While the foregoing describes various embodiments of the present disclosure, other and further embodiments of the present disclosure may be devised without departing from the basic scope thereof. The scope of the invention is determined by the claims that follow. The present disclosure is not limited to the described embodiments, versions or examples, which are included to enable a person having ordinary skill in the art to make and use the present disclosure when combined with information and knowledge available to the person having ordinary skill in the art.