CN1854053A - Elevator used governor - Google Patents

Abstract

A speed governor for an elevator, comprising: a speed governor pulley (13) wound with a speed governor rope (7) linked with an elevator car (1) and supported by a shaft; claws (46, 46A) The swing member (18, 18A) moved toward the outer diameter side of the pulley (13) by the centrifugal force generated by the rotation of the pulley (13); is formed by contacting the moving claw (46, 46A) Rotate and release the engaging piece of the switch (22); use its own weight to rotate, and clamp the wedge part (31, 31A) of the governor rope (7) between the opposite clamping piece (37, 37A) ); and a hook that rotates and releases support from the wedge (31, 31A) by abutting against the claw (46, 46A) that moves further toward the outer diameter side of the pulley (13), wherein, The wedge portion (31, 31A) is urged toward the speed governor rope (7) by the elastic force of the disc spring (43). Therefore, a speed controller for an elevator that can be easily downsized is provided.

Description

Elevator speed controller

technical field

The invention relates to a speed regulator for an elevator.

Background technique

As conventional speed controllers for elevators, various speed controllers for elevators have been disclosed. For example, the following patent document 1 discloses a disc-shaped speed governor. The disc-shaped speed governor is configured to push the falling wedge part by the elastic force of the coil spring, and clamp the speed governor rope on it. between the clips.

[Patent Document 1] JP-A-55-26140 (Figure 5, etc.)

However, in the speed governor disclosed in the above-mentioned Patent Document 1, there is a problem that, due to the use of a coil spring, the mechanism for clamping the rope of the speed governor becomes larger, thereby reducing the volume of the speed governor for an elevator. big.

Contents of the invention

An object of the present invention is to provide a speed controller for an elevator, which can be easily miniaturized.

In order to achieve the above object, the elevator speed governor of the present invention includes: a speed governor pulley wound with a speed governor rope interlocked with the elevator car and supported by a shaft; A swinging member that moves toward the outer diameter side of the pulley by centrifugal force; the engaging piece that rotates and releases the switch by contacting the moving claw portion; rotates by its own weight, and is clamped between the opposing clamping piece a wedge that holds the speed governor rope; and a hook that rotates and releases the support of the wedge by abutting against the claw that moves further toward the outer diameter side of the pulley, wherein the belleville spring The elastic force pushes the wedge towards the governor rope.

(effect of invention)

According to the present invention, it is possible to provide a speed controller for an elevator that can be easily downsized. Especially, when the elevator car has an overspeed state in the ascending direction and an overspeed state in the descending direction, and the speed governor rope needs to be clamped, the effect of the speed governor is particularly obvious.

Description of drawings

Fig. 1 is a front view showing a first embodiment of the elevator speed controller according to the present invention.

Fig. 2 is a partial sectional view of the elevator speed controller involved in the present invention.

Fig. 3 is a partial top view of the elevator speed controller involved in the present invention.

Fig. 4 is a front view of the switch action of the elevator speed governor.

Fig. 5 is a front view when the speed governor rope of the elevator speed governor is clamped.

Fig. 6 is a structural schematic diagram showing the relationship between the elevator and the governor.

In the figure, 1-elevator car, 2-balance weight, 3-main sling, 4-hoist, 5-pulley, 6-speed governor, 7-speed governor rope, 8-speed governor balance weight pulley, 9-frame body, 10-stop rod, 11, 11A-frame, 12-governor pulley shaft, 13-governor pulley, 14-swing component base, 15, 15A-rotation fulcrum, 16, 16A, 21 , 29, 33, 33A, 34, 34A, 36, 36A-pins, 17-connecting rods, 18, 18A-swing parts, 19-springs, 20-nuts, 20A-adjusting parts, 22-switches, 23-switch pieces , 24-switch cam, 25,32,32A-shaft, 26-first hook, 27-second hook, 28-third hook, 30,30A-bolt, 31,31A-wedge, 35, 35A-rod, 37, 37A-clamping piece, 38, 38A-cover plate, 39, 39A-gasket, 40, 41, 42-spring bracket, 43-disc spring, 44, 44A-lock ring, 45 , 45A-brake, 46,46A-claw.

Detailed ways

The first embodiment of the present invention will be described below with reference to FIG. 1 to FIG. 6 .

Fig. 6 is a structural schematic diagram showing the relationship between the elevator and the speed governor 6. In FIG. 6 , the elevator car 1 and the counterweight 2 are connected by a main rope 3 wound around a hoist 4 and a pulley 5 . In addition, an endless speed governor rope 7 is wound around a pulley of the speed governor 6 , and a speed governor counterweight pulley 8 is provided at a lower end of the speed governor rope 7 . The frame body 9 of the elevator car 1 and a part of the speed governor rope 7 are clamped by a catch lever 10 of an unshown safety device. The pulley of the speed machine 6, and when it is detected that the specified overspeed occurs due to some reasons, the gear bar 10 is activated through the speed governor rope 7, so that the safety device operates, and if overspeed occurs in the descending direction, the elevator The car 1 is emergency stopped, and if overspeed occurs in the ascending direction, the elevator car 1 is decelerated or stopped.

The structure of the speed governor 6 of the present invention among the above-mentioned structures will be described below with reference to FIGS. 1 to 3 . Figure 1 is a front view of the governor 6 when the elevator is in normal operation, Figure 2 is a partial sectional view showing the spring part in the X-X section in Figure 1, and Figure 3 is a partial sectional view showing the engaging part in the X-X section in Figure 1 partial sectional view.

As shown in Figure 1, the speed governor 6 of the present invention has a speed governor pulley shaft 12 fixed on a frame 11 and a speed governor pulley 13 mounted on the pulley shaft 12 through a bearing not shown. In addition, the speed governor 6 has a swing member base 14 fixed on the shaft of the speed governor pulley 13, a rotation fulcrum 15, 15A, pins 16, 16A, two swing members 18, 18A connected by a connecting rod 17, The spring 19 determines the swing amount of the swing member, the adjustment member 20A composed of a nut 20 and a bolt that guides the spring 19 and adjusts the spring force, and a pin 21 of the adjustment member 20A. Moreover, this speed governor 6 has a switch 22 fixed on the frame 11, a switch cam 24 having a switch piece 23 and being able to rotate around the speed governor pulley shaft 12, a pin 29 on which the switch cam 24 is placed, and a switch cam 29 fixed to the frame. Three hooks (the first hook 26, the second hook 27, and the third hook 28) are coaxially arranged on the shaft 25 on 11A (refer to FIG. 3).

In addition, the second hook 27 and the third hook 28 are provided with bolts 30 , 30A that sandwich the first hook 26 from both ends. Further, the speed governor 6 includes wedge portions 31, 31A, shafts 32, 32A serving as rotational fulcrums of the wedge portions 31, 31A, and pins 33, 33A on which the second hook 27 and the third hook 28 are engaged. Pins 34, 34A are provided on the wedges 31, 31A. Rods 35, 35A are installed so as to be able to rotate freely around pins 36, 36A fixed on frame 11A (referring to Figure 3).

Furthermore, clamping pieces 37, 37A and cover plates 38, 38A are provided on the speed governor 6, and spacers 39, 39A are provided between the clamping pieces 37, 37A and cover plates 38, 38A.

Spring brackets 40 , 41 , 42 are arranged between the wedge portion 31 and the wedge portion 31A, and a plurality of disc springs 43 are arranged between the spring brackets 41 , 42 . And, as shown in Figure 2, 8 disc springs are arranged alternately. There are threads on the spring brackets 41 and 42, and the compression amount of the disc spring 43 can be changed by rotating the spring bracket 41, so the spring force of the disc spring 43 can be adjusted.

The surroundings of the first hook 26 , the second hook 27 , the third hook 28 and the wedges 31 , 31A are configured in the shape shown in FIG. 3 . The rods 35, 35A and the pins 36, 36A will not fall off under the action of the locking rings 44, 44A. The stops 45, 45A are used to limit the range of rotation of the rods 35, 35A.

The operation of the speed governor 6 will be described below. Figure 4 shows the situation when the elevator car 1 overspeeds in the ascending direction, making the governor pulley 13 overspeed in the counterclockwise direction to achieve the switch-off action, and Figure 5 shows that the overspeed is further aggravated to achieve the clamping action to clamp the speed Machine rope 7 case.

First, as shown in FIG. 4, the swing members 18, 18A are swung by the centrifugal force generated by the rotation of the speed governor pulley 13, and the claws 46, 46A at the front ends of the swing members 18, 18A are directed toward the outer diameter of the speed governor pulley 13. Move sideways. And, when the predetermined speed is reached, the claws 46, 46A come into contact with the switch piece 23, and the engaging piece made of the switch piece 23 and the switch cam rotates counterclockwise to make it fall down, and the switch 22 become a released state. At this time, since the first hook 26 has not been in contact with the claws 46, 46A, the first hook 26 is still in an inverted state.

The further aggravation of the overspeed causes the swinging parts 18, 18A to swing further, and the claws 46, 46A move further toward the outer diameter side of the speed governor pulley 13. As shown in Figure 5, the claws 46, 46A contact the first hook 26 , so that the first hook 26 falls down and rotates around the shaft 25 in a clockwise direction. The first hook 26 rotates the second hook 27 counterclockwise around the shaft 25 via the bolt 30A, so the coupling between the second hook 27 and the pin 33 is released, and the support of the wedge 31 is released. The wedge portion 31 rotates while falling counterclockwise around the shaft 32 by its own weight, and clamps the governor rope 7 between the wedge portion and the opposing clamping piece 37 . At this time, the shaft 32 moves to the right as shown in Figure 5, so the wedge portion 31 is pushed to the speed governor rope 7 by the elastic force of the disc spring 43, and the speed governor rope 7 is clamped between the wedge portion 31 and the speed governor rope 7. Between the clamping pieces 37. The clamping force at this time is determined by the friction characteristics between the elastic force of the disc spring 43 and the contact portion (wedge 31 and clamping piece 37) of the speed governor rope 7 . Further, when the wedge portion 31 falls, the pin 34 rotates the lever 35 counterclockwise around the pin 36 . As a result, the rod 35 becomes the state shown in FIG. 5 , and is positioned to support the lower part of the first hook 26 .

Thus, by using the disc spring 43, compared with the case where a coil spring is used, the clamping structure of the speed governor rope 7 can be made small. And, since the disc spring 43 is provided between the wedge parts 31, 31A, and one end side of the disc spring 43 is supported by one wedge part 31, and the other end side of the disc spring 43 is supported by the other wedge part 31A, so The clamping force can be obtained from the common disc springs 43 , so that the speed governor rope holding structure can be simplified, and the speed governor 6 can be downsized. Therefore, not only when the elevator car 1 appears overspeeding in the descending direction, but also when the elevator car 1 appears overspeeding in the ascending direction, the speed governor rope 7 can be clamped, so even if the disc-shaped speed governor is set With the addition of two wedges, it is still possible to achieve miniaturization as a whole.

In the present invention, when the wedge part 31 falls, as shown in Figure 5, the pin 34 makes the rod 35 fall counterclockwise, so while the first hook 26 falls clockwise, it also plays a role It functions as a support rod for the first hook 26 . Thus, the switch cam 24 slides off from the pin 29, so the switch 22 can be reliably disconnected, and as long as the first hook 26, the second hook 27 and the wedge 31 are not manually restored to their original states, Unable to reset switch 22. In this way, when the wedge portion 31 falls, the off state of the switch 22 can be reliably maintained, so that a safe elevator system can be realized.

In addition, even if the elevator car 1 overspeeds in the ascending direction and the governor pulley 13 overspeeds in the clockwise direction, as long as the governor pulley 13 reaches a specified rotational speed, the switch will perform an opening action. When the overspeed of the elevator car 1 is further increased, the clamping operation is performed to clamp the speed governor rope 7 between the wedge portion 31A and the clamping piece 37A. In this way, when the elevator car 1 is in an overspeed state in the descending direction, the governor rope 7 is clamped by one of the wedges 31, and when the elevator car 1 is in an overspeed state in the ascending direction, it is clamped by the other wedge 31A. Hold the governor rope 7.

Claims (5)

1. elevator used governor possesses: is wound with and lift car interlock and the governor rope that moves, and by the governor pulley of axle supporting; The tilting member that the centnifugal force that claw produces by the rotation by this pulley moves towards the outside diameter of described pulley; By rotating the also snap-latch piece of cancel switch with the described claw butt that moves; Utilize deadweight and rotate, with relative to holding piece between the wedge portion of the described governor rope of clamping; And the hook spare by connecting and rotate and remove the support of described wedge portion with the described claw that further moves towards the outside diameter of described pulley, it is characterized in that, by the elastic force of disk spring, described wedge portion is pushed towards described governor rope.

2. elevator used governor according to claim 1, it is characterized in that, be provided with two described wedge portions, when described lift car when overspeed condition appears in descent direction, by a side the described governor rope of wedge portion clamping wherein, when described lift car when overspeed condition appears in ascent direction, by the opposing party's the described governor rope of wedge portion clamping.

3. elevator used governor according to claim 2 is characterized in that, one of described disk spring is distolaterally supported by described wherein side's wedge portion, and the distolateral wedge portion by described the opposing party of another of described disk spring supports.

4. elevator used governor according to claim 3, it is characterized in that described hook spare comprises: the first hook spare by rotating with described claw butt, remove by the clockwise rotation of the described first hook spare a described wherein side wedge portion support the second hook spare, rotate the 3rd hook spare of the support of the wedge portion that removes described the opposing party by the anti-clockwise of the described first hook spare.

5. elevator used governor according to claim 3 is characterized in that, described wedge portion is provided with pin, engages the described wedge portion that supports with described hook spare by this pin.

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