0001]The present invention speed governor, and to an elevator apparatus.
BACKGROUND
[0002]The elevator system in general, constantly monitors the lifting speed of the car, the speed governor for an emergency stop the fell cab to a predetermined overspeed state is provided. Specifically, the speed governor, the lifting speed of the car reaches the first over speed exceeds the rated speed (1.3 times the rated speed usually), of the hoisting machine that drives the car power and the power of the control device for controlling the traction machine for blocking respectively. Also, the speed governor, the lowering speed of the car reaches the second overspeed beyond the first over speed (1.4 times the rated speed usually), operate the emergency stop device provided in the car by, mechanically to emergency stop the car.
[0003]
　Such speed governor for the purpose of detection of the velocity or position of the car, when transmitting the rotation of the sheave in the encoder, a spindle coupled with the encoder is spindle rotation method for rotating together with the sheave. Thus those composed generally provide support of the spindle in bearings arranged in pairs on opposite portions of the frame are integrally molded.
[0004]
　On the other hand, in the governor, in order to improve the assembling productivity, than those described in Patent Document 1, the frame of the speed governor, and the reference frame, and a cover frame fastened to the reference frame, the reference frame It has been proposed that consist of a spacer portion for holding a gap between the cover frame and.
CITATION
Patent Document
[0005]
Patent Document 1: Japanese Patent Publication No. 06-32554
Summary of the Invention
Problems that the Invention is to Solve
[0006]
　Patent Document 1 is a was a method of fixing the main shaft (pulley shaft) of the speed governor, which the In the different spindle rotation scheme adopted speed governor, bearing a pair (ball bearing) is disposed When the concentric accuracy and parallel accuracy of the counter portion of the frame to be is not secured spindle inclined, the inclination of the main shaft is large, the inner and outer races of the bearings supporting the main shaft is inclined beyond a permissible value. Thus, scratched ball bearings in contact with the edges of the inner and outer rings, the bearing will be shorter service life. To avoid this, it is necessary to eliminate the deviation of the relative position of both the bearing up the processing accuracy of the frame, in the integrally molded frame, concentric accuracy and parallel between the opposed portions bearing is arranged by bending during processing it is difficult to improve the accuracy, it is difficult to properly position the spindle.
[0007]
　On the other hand, split frames as described in Patent Document 1, the machining accuracy of the bent portion subjected to the respective frame for fastening the inter-frame, to ensure accuracy in a state of assembled the frame together, and, it is difficult to secure the necessary strength in the bearing around which supports the main shaft.
[0008]
　An object of the present invention is to provide a governor and an elevator system capable of ensuring the accuracy and strength in the opposing portions of the frame bearing a pair are disposed.
Means for Solving the Problems
[0009]
　To solve the above problems and to achieve the object of the present invention, the speed governor of the present invention includes a frame, a bearing provided in said frame, a main shaft is rotatably supported by the bearing, the main shaft with a fixed cab governor rope is wound are sheave, a pendulum that rotates by a centrifugal force the sheave acts when rotating, the pendulum in the direction against the rotation of the pendulum It was energized, when the centrifugal force is equal to or greater than a predetermined value, tone composed of a pendulum urging member for permitting rotation of the pendulum, a ratchet that rotates engaged with the pendulum pivoted by the centrifugal force in speed machine, the frame is configured to include a first frame and a second frame, the bearing, the second and first bearing provided in pairs on opposing surfaces of said first frame and said second frame a bearing, the said first frame second Frame are arranged so as to surround the main shaft are connected by a reinforcing member of a plurality of identical length.
[0010]
　Further, the elevator apparatus of the present invention includes: a car for lifting the hoistway, the counterweight moves up and down the hoistway, a main rope for suspending said counterweight and said cab, said main rope winding hung, a traction sheave which drives the main rope lifting the cab is connected to the car, and a rope for a speed governor that moves with multiplication Rikago, a safety device for emergency stop the car , when the lifting speed of the car reaches a predetermined overspeed, an elevator anda emergency stop is to governor of the car by operating the safety gear, said governor machine includes a frame configured to include a first frame and a second frame, a first bearing and a second bearing provided in pairs on opposing surfaces of said first frame and said second frame, said first A main shaft rotatably supported by the receiving and said second bearing is fixed to the main shaft, a sheave rope governor of the car is wound, by a centrifugal force the sheave acts when rotating a pendulum that rotates, in the direction against the rotation of the pendulum urges the pendulum, when the centrifugal force becomes equal to or greater than the predetermined value, the pendulum biasing member to allow rotation of the pendulum, the centrifugal force a ratchet that rotates engaged with the pendulum pivoted way, the connecting the second frame and the first frame, and arranged so as to surround the main shaft, and a reinforcing member of a plurality of identical length, comprising.
Effect of the invention
[0011]
　According to the governor and an elevator apparatus of the structure, it is possible to ensure the accuracy and strength in the opposing portions of the frame bearing a pair are disposed.
[0012]
　Incidentally, problems other than those described above, and advantages will become apparent from the following description of embodiments.
BRIEF DESCRIPTION OF THE DRAWINGS
[0013]
FIG. 1 is a diagram illustrating an example of the structure of an elevator apparatus of an embodiment.
It is a front view showing a configuration example of a speed governor of FIG. 2 embodiment.
3 is a sectional view showing a configuration example of the speed governor according to one embodiment.
DESCRIPTION OF THE INVENTION
[0014]
　Hereinafter, embodiments for implementing the governor and an elevator apparatus of the present invention will be described with reference to FIGS. Note that description of the same or similar configuration in each drawing repeated denoted by the same reference numerals will be omitted.

　FIG. 1 is a diagram illustrating an example of the structure of an elevator apparatus of an embodiment of the present invention.
[0015]
　As shown in FIG. 1, the elevator apparatus of the present embodiment, the lifting body (car) 300, a counterweight 400, a main rope 500, the traction sheave 600, the guide rail 700, a safety device 800, an actuating lever 900, and a speed governor 200.
[0016]
　Lift 300 is installed in the hoistway 1100 provided in building 1000. The lifting body 300 has a plurality of guide devices (not shown), slidably engaged with the guide rail 700. Thus, the lifting body 300 is guided by the guide rails 700 by raising and lowering the hoistway 1100.
[0017]
　Hereinafter, the lifting body 300 and counterweight 400 and the direction of lifting the lifting direction. That is, the guide rail 700 guides the vertically movable body 300 in the lifting direction.
[0018]
　Counterweight 400 has a plurality of guide devices (not shown). A plurality of guide devices of the counterweight 400, slidably engages in the guide rail fixed to the wall of the hoistway 1100 (not shown). Thus, the counterweight 400 is guided in the lifting direction by a guide rail (not shown) for lifting the hoistway 1100.
[0019]
　The main rope 500 is vertically movable body 300 and the counterweight 400 are hanging. Traction sheave 600 are disposed in a machine room 1200 provided in building 1000. The traction sheave 600, the main rope 500 is wound around. In addition, the machine room 1200, drives the traction sheave 600, and a driving device (not shown) is arranged to brake. Drive, by rotating the traction sheave 600, the main rope 500 by friction drive, elevating the elevating body 300 and the counterweight 400.
[0020]
　Safety device 800 is provided on the elevating body 300, grips the guide rail 700 by the wedge in an emergency, to stop the descent of the lifting body 300. Actuating lever 900 is pivotally supported on the elevating body 300, drives the emergency stop device 800. The actuating lever 900 is connected to the governor rope 1 below.
[0021]
　Governor 200, first over speed lifting speed of the lift member 300 exceeds the rated speed (e.g., 1.3 times the rated speed) is reached, the power supply and the driving of the driving device for driving the traction sheave 600 the power control device (not shown) for controlling the device to shut off respectively. Also, the speed governor 200, the lowering speed is second overspeed of the elevator body 300 (e.g., 1.4 times the rated speed) is reached, by operating the actuating lever 900 provided on the elevating body 300, very stop to operate the device 800. Thus, the lifting member 300 is mechanically emergency stop.

　now be described with reference to FIGS. 2 and 3 the structure of the speed governor 200.
[0022]
　Figure 2 is a front view showing a configuration example of the speed governor 200. Figure 3 is a sectional view showing a configuration example of the speed governor 200.
[0023]
　As shown in FIGS. 2 and 3, the speed governor 200 has a spindle 2, a frame 3, the sheave 4, an encoder 5, the pendulum 6, 7 and the toothed ratchet 8, and a shoe mechanism 9 It is provided. Spindle 2 is rotatably supported by a bearing provided on the frame 3 to be described later.
[0024]
　As shown in FIG. 3, the frame 3 includes a first frame 3a having a substantially U-shaped cross-section, a two-piece structure consisting of a substantially I-shaped second frame 3b, the folded portion of the first frame 3a second frame 3b is by being coupled by a fixing bolt 3d to 3c, to form the box body. Further, on the facing surfaces of the first frame 3a and the second frame 3b, the first bearing 10 and second bearing 11 using a ball bearing is arranged as a pair, the main shaft 2 is rotatable via the bearings and it is supported by the. Here, the first frame, the second frame respectively, substantially U-shaped, an example will be described with substantially I-shaped cross section may have a configuration in which both frames are coupled directly, for example, both frame may be configured to have a substantially L-shaped cross-section.
[0025]
　Between the first frame 3a and the second frame 3b, so as to surround the main shaft 2, for example, reinforcing pins 12a ~ 12c of the three identical length are arranged. These reinforcing pins 12a ~ 12c has its both end portions are threaded processing, one through the end portion is formed in the first frame 3a holes, inserted into the through hole of the other end portion is formed in the second frame 3b by reinforcing pins 12a ~ 12c by a nut 13 is screwed in this state is adapted to be fixed between the first frame 3a and the second frame 3b. Incidentally, when assembling the frame 3, by using the assembly employment (not shown), the first bearing 10 to be paired, concentric accuracy of the counter portion of the first frame 3a and the second frame 3b which the second bearing 11 is disposed and while ensuring the parallel precision spindle 2 and the first bearing 10 can be installed easily second bearing 11.
[0026]
　The sheave 4 of the speed governor 200, endless governor rope 1 is wound. Governor rope 1, the lifting body 300 is connected to (see FIG. 1), to rotate the sheave 4 moves together with the lift 300. Further, the lower portion of the hoistway 1100, sheave 91 the rope 1 is a governor is wound are arranged.
[0027]
　The encoder 5 is arranged so as to face the main shaft 2 to the second frame 3b via a bracket 14, to detect the rotation of the main shaft 2 through the protruding portion 2a, so as to detect the position or speed of the lift member 300 ing. Incidentally, the bracket body 14, which second bearing 11 described above with the encoder 5 is incorporated, by fixing the bracket member 13 to the second frame 3b, the second bearing 11 is opposite the position of the first bearing 10 has become disposed the structure. Incidentally, the speed governor in which the invention is applied is not necessarily limited to the encoder 5 is arranged.
[0028]
　Pendulum 6 and 7, is formed in a substantially arc shape, and is rotatably supported by an arm 15 which rotates with the sheave 4. When the arm 15 with the sheave 4 is rotated, the pendulum 6 and 7 rotated by centrifugal force. Further, the end portion of the pendulum 6, balanced spring 16 and the pendulum pawl 17 is provided.
[0029]
　Equilibrium spring 16, showing an example of a pendulum urging member of the present embodiment produces a resistive force other end of the pendulum 6 against being displaced in a direction approaching the main spindle 2. That is, when the centrifugal force acting on the pendulum 6, 7 exceeds the resistance force of the balancing spring 16, the balanced spring 16 is elastically deformed (compressed), the pendulum 6 and 7 to rotate.
[0030]
　Pendulum pawl 17 protrudes from the side of the inner side of the pendulum 6 (spindle 2 side). And pendulum 6,7 rotation by centrifugal force, the other end of the pendulum 6 is displaced in the direction approaching the main spindle 2, pendulum pawl 17 engages the teeth to be described later the toothed ratchet 8 (not shown) to focus.
[0031]
　At one end of the pendulum 6 and 7, the detection projection 6a, 7a are provided. The detection projection 6a, 7a protrudes from the side of the outer (main shaft 2 opposite) in the pendulum 6,7. Detecting projection 6a, 7a, when the pendulum 6,7 is rotated, in contact with the detection switch (not shown).
[0032]
　Toothed ratchet 8 shows a specific example of a rotary member of the present embodiment, it is rotatably supported on the main shaft 2. The toothed ratchet 8 is formed in a disk shape, one of the plane faces the pendulum 6,7. The outer peripheral surface of the toothed ratchet 8, teeth (not shown) is formed. The teeth of the toothed ratchet 8, pendulums pawl 17 of the pendulum 6 rotates engages.
[0033]
　Shoe mechanism 9 includes a connection lever 21, the spring shaft 22, the gripping arm 23, and a biasing spring 24, and a brake shoe 25.
[0034]
　Connection lever 21 is formed in a rod shape, and is rotatably supported by the connecting shaft 26 fixed to the toothed ratchet 8. Connecting shaft 26 is protruded from the other plane of the toothed ratchet 8 and rotatably supporting one end portion of the connecting lever 21.
[0035]
　The spring shaft 22 is inserted into the other end of the connecting lever 21. The end of the connecting lever 21 of the spring shaft 22 opposite to the spring receiving portion. Then, the spring shaft 22, the gripping arms 23, extend through the biasing spring 24.
[0036]
　Gripping arm 23 has a shaft penetration portion 23a which spring shaft 22 penetrates, and a supported portion 23b continuous to the shaft through portion 23a. Shaft through portion 23a is disposed between the biasing spring 24 and the connecting lever 21. The supported portion 23b is rotatably supported via a shaft 27 to the frame 3.
[0037]
　The biasing spring 24 is, for example, a compression spring biases the shaft penetration portion 23a of the gripping arm 23 to the connecting lever 21 side. That is, one end of the biasing spring 24, the spring receiving portion abuts, the other end of the biasing spring 24 is in contact with the shaft through portion 23a of the gripping arm 23.
[0038]
　In the present embodiment, as the urging member for urging the shaft penetration portion 23a of the gripping arm 23 to the connecting lever 21 side, is applied compression coil spring, biases for urging the gripping arms 23 of the present embodiment the members may be other than the compression coil spring, it may also be applied to other elastic member such as rubber.
[0039]
　Brake shoe 25 is pivotally supported on the supported portion 23b of the gripping arm 23 is opposed to the wound around the governor rope 1 to sheave 4. The brake shoe 25, when the shoe mechanism 9 in accordance with the rotation of the toothed ratchet 8 is operated is pressed for governor rope 1.
Operation of the speed governor]
　Next, the operation of the speed governor 200 during normal operation, will be described with reference to FIGS.
[0040]
　When the lifting member 300 (see FIG. 1) is lowered, governor rope 1 rotates the sheave 4 moves together with the lift 300. Thus, the centrifugal force acts on the pendulum 6,7, when the centrifugal force exceeds the resistance force of the balancing spring 16 is biasing member pendulum, the pendulum 6 and 7 to rotate.
[0041]
　Lowering speed is first over speed of the lifting member 300 (see FIG. 1) (e.g., 1.3 times the rated speed) reaches the one end portion of the pendulum 6 and 7 contacts the detection switch (not shown). Thus, 200 governor detects that the elevating speed of the lifting body 300 has reached the first over speed. The governor 200, shutting off the power supply of the control device (not shown) for controlling the power source and the driving device for a drive device (not shown) for driving the traction sheave 600, respectively.
[0042]
　Moreover, descending speed is second overspeed of the elevator body 300 (e.g., 1.4 times the rated speed) is reached, the pendulum claw 17 of the pendulum 6 rotates is engaged with teeth of the toothed ratchet 8 , rotate the toothed ratchet 8. In other words, the speed governor 200 performs the trip operation. When the toothed ratchet 8 is rotated, the connection lever 21 moves, the gripping arm 23 is rotated.
[0043]
　When gripping arm 23 rotates, the brake shoe 25 is pressed against the wound around governor rope 1 to sheave 4, tensioning for governor rope 1. Thus, the movement of the governor rope 1 is stopped, the lifting member 300 continues to descend. As a result, it raised operating lever 900 which is connected to the governor rope 1 (see FIG. 1), actuates the emergency stop device 800, mechanically to emergency stop the elevating body 300.
[0044]
　Thus, in the present embodiment, the frame 3, by a two-piece structure of the first frame 3a and the second frame 3b, opposed portions of the frame 3 in which the first bearing 10, second bearing 11 is disposed processing accuracy can be easily increased this. Further, by arranging the reinforcing pins 12a ~ 12c of the same length between the first frame 3a and the second frame 3b so as to surround the main shaft 2, regardless of the processing precision of the bent portion of the frame 3, the it is possible to ensure the concentric accuracy and parallel accuracy of the counter surfaces for one frame 3a and the second frame 3b, the first bearing 10 forming a pair, a second bearing 11 securely positioned in the proper position, and, of the frame 3 it is possible to improve the strength. Therefore, to suppress the inclination of the spindle 2 and thus the first bearing 10, housed within the allowable value the inclination of the inner and outer rings of the second bearing 11, it is possible to prevent the short life of the dual-bearing.
[0045]
　While the governor and an elevator apparatus of this embodiment has been described, including the effects thereof. However, the speed governor and an elevator apparatus of the present invention is not a ammonio to be limited to the embodiments described above, various modifications can be practiced within the scope not departing from the gist of the invention described in the appended claims is there.
[0046]
　For example, in the embodiment described above, the reinforcing pins 12a ~ 12c disposed between the first frame 3a and the second frame 3b, the first bearing 10, the opposing portions of the frame 3 in which the second bearing 11 is disposed Although provided in order to ensure the accuracy and strength, it is also possible to have other functions in at least one of these reinforcing pins 12a ~ 12c. For example, it is also possible to use the supported portion 23b of the gripping arm 23 as a shaft rotatably supporting.
[0047]
　In the above embodiment describes the configuration in which the reinforcing pin so as to surround the main shaft 2, instead of the reinforcing pin may be used a rectangular reinforcing member.
DESCRIPTION OF SYMBOLS
[0048]
1 governor rope, 2 spindle, three frames, 3a first frame, 3b second frame, 3c folded portion, 3d fixing bolt, 4,91 sheave 5 encoder, 6,7 pendulum, 6a, 7a for detecting collision parts, 8 toothed ratchet, 9 shoe mechanism, 10 a first bearing, 11 a second bearing, 12a, 12b, 12c reinforcing pin 13 nut, 14 bracket body 15 arm, 16 balanced spring, 17 pendulum nails 21 connected lever , 22 spring shaft, 23 gripping arms, 23a shaft penetration portion, 23b supported portion, biasing spring 24, 25 brake shoe 26 connecting shaft, 27 shaft, 200 governor, 300 lift, 400 counterweight, 500 main ropes, 600 traction sheave, 700 guide rails, 800 emergency stop device, 900 actuation lever, 1000 buildings, 1100 hoistway, 1200 械室

WE CLAIM

A frame,
　and a bearing provided in said frame,
　a main shaft is rotatably supported by the bearing,
　the sheave rope governor fixed cab is wound on the main shaft,
　when the sheave is rotated a pendulum that rotates by the centrifugal force acting on,
　the direction against the rotation of the pendulum urges the pendulum, when the centrifugal force becomes equal to or greater than the predetermined value, the pendulum urging to allow rotation of the pendulum a member,
　a ratchet that rotates engaged with the pendulum pivoted by the centrifugal force,
the configured governor from,
　the frame is configured to include a first frame and a second frame,
　the bearing is a first bearing and a second bearing provided in pairs on opposing surfaces of said first frame and said second frame,
　said second frame and the first frame is disposed so as to surround the main shaft , reinforcing the plurality of identical length Speed governor, characterized in that it is connected by wood.
[Requested item 2]
　In the speed governor according to claim 1,
　wherein the first frame, the second frame,
　respectively, substantially U-shaped, or has a substantially I-shaped cross section, or,
　together, a substantially L-shaped cross-section It has,
　governor, characterized in that the end portion of the second frame and an end portion of the first frame is in contact.
[Requested item 3]
　In the speed governor according to claim 2,
　governor, characterized in that the end portion of the second frame and an end portion of the first frame is fixed by fixing bolts.
[Requested item 4]
　In the speed governor according to claim 1,
　wherein the first bearing, the second bearing, speed governor, characterized in that the ball bearing is used.
[Requested item 5]
　A car which moves up and down the hoistway,
　the counterweight moves up and down the hoistway,
　a main rope for suspending said cab and said counterweight,
　said main rope is wound around, and drives the main rope a traction sheave for lifting the cab Te,
　is connected to the car, and a rope for a speed governor that moves with multiplication Rikago,
　a safety device for emergency stop the car,
　lifting speed of the car is given of when it reaches the overspeed, said a safety device emergency stop is to governor of the car by operating the,
　an elevator apparatus comprising,
　the governor includes
　a first frame a second a frame configured to include a frame,
　a first bearing and a second bearing provided in pairs on opposing surfaces of said first frame and said second frame,
　rotatable said first bearing and said second bearing support to A main shaft which,
　fixed to the main shaft, a sheave rope governor of the car is wound,
　and a pendulum that rotates by a centrifugal force the sheave acts when rotating,
　the rotation of the pendulum the pendulum was urged to oppose each of said triple centrifugal force becomes equal to or greater than a predetermined value, the pendulum biasing member to allow rotation of the pendulum,
　rotary engaged with the pendulum pivoted by the centrifugal force and the ratchet to be,
　Wherein with the first frame for connecting said second frame and arranged so as to surround the main shaft, and a reinforcing member of a plurality of identical length,
　the elevator apparatus characterized by comprising a.