An elevator car guide rail wheel set assembly and elevator

Abstract

The application discloses an elevator car guide rail wheel set assembly and an elevator. A guide wheel is attached to a guide rail and rotates with the car; the rotation of the guide wheel in the elevator car guide rail wheel set assembly is transmitted to a driving shaft, the driving shaft is provided with a centrifugal clutch, after exceeding a predetermined rotating speed, a driving part of the centrifugal clutch drives a driven part to rotate, a connecting base of the guide wheel is transversely and slidingly connected with a fixed base and connected with a spring damping part, the elevator car guide rail wheel set assembly can realize the speed reduction of the elevator and the hanging and stopping of the car during the up and down running of the elevator, the structure is compact, the installation is convenient, the overall structure of the existing elevator car and traction system does not need to be changed, only the guide rail needs to be adapted, transformed and installed, the difficulty is low, and the application is convenient for popularization.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of elevator manufacturing and elevator safety, in particular to an elevator car guide rail wheel set assembly and elevator BACKGROUND

[0002] The main structure of the elevator: the main machine control cabinet, traction machine, speed governor, brake, traction sheave in the machine room. The people ride in the middle is called the car, and there is a landing door on each floor. The outside of the car and the inside of the shaft have counterweights, which are connected by steel wire ropes. The counterweight rises when the car descends, and the counterweight descends when the car rises.

[0003] When the elevator brake fails, accompanied by the car overloading down, the elevator overspeeds, and if the speed governor safety pawl system is over-acted when overspeeding, the car can still be effectively stopped after its return exceeds 115% of the rated speed, however, if the speed governor safety pawl system fails, the elevator squatting bottom accident cannot be avoided. When the elevator traction capacity is insufficient or the control system fails, the car can be stopped by the end station protection switch when the car exceeds the bottom end station, if the end station protection switch fails, the squatting bottom accident is likely to occur when the elevator oversteps. When the elevator is lightly loaded and goes up, if the brake fails, the elevator will overspeed, for the elevator without an upward protection device or with a failed upward protection device, a top collision accident will occur, for the elevator with a column direction speed governor safety pawl system as the upward protection device, if the speed governor safety pawl system fails at this time, a top collision accident will also occur. When the elevator approaches the top end station due to control system failure, if the end station protection switch fails or the top space of the elevator does not meet the requirements, there is a possibility of car top collision, therefore, only when the brake and other safety parts of the elevator are reliable and effective, can the elevator squatting bottom and top collision accidents be avoided. In the actual elevator operation process, the top collision or squatting bottom accident accounts for about 15% of the total accidents, although the proportion is small, the safety problem of the passengers is indeed very serious, and it will bring great economic and psychological burden to the injured and their families. In view of the current elevator operation status, the most effective way to reduce the risk of failure is to regularly maintain the elevator while fully considering the improvement of elevator operation guarantee in the direction of elevator manufacturing, increasing protection measures and reducing the probability of occurrence. SUMMARY

[0004] The purpose of the present application is to overcome the above-mentioned deficiencies in the prior art, and to provide a safe and effective elevator car guide rail wheel set assembly and elevator

[0005] The technical scheme adopted by the present application to solve the above problems is: an elevator car guide rail wheel set assembly, a guide wheel is attached to a guide rail and rotates with the car up and down; the rotation of the guide wheel is transmitted to a driving shaft, the driving shaft is provided with a centrifugal clutch, after exceeding a predetermined rotating speed, the driving part of the centrifugal clutch drives the driven part to rotate; the connecting seat of the guide wheel and the fixed seat are transversely slidingly connected and connected with a spring damping part; the driven part transmits the rotation to the first transverse moving mechanism to move inward, pushing the spring damping part to compress; the driven part transmits the rotation to the second transverse moving mechanism to move outward, adapting the limiting part on the second transverse moving mechanism to the limiting groove provided on the guide rail.

[0006] Further, the centrifugal clutch comprises a forward driving group and a reverse driving group, the forward driving group and the reverse driving group comprise a driving part and a driven part, the driving part is provided with a centrifugal hammer and a tension spring, one end of the centrifugal hammer is eccentrically hinged on the driving part, the other end of the centrifugal hammer is provided with a roller, the weight of one end of the roller is greater than that of the other end, one end of the tension spring is fixed with the driving part, the other end of the tension spring is fixed with the one end of the centrifugal hammer provided with the roller, the inner side of the driven part is provided with a contact part, one side of the contact part is an inclined surface, the other side is a radially extending surface and is provided with a groove adapted to the roller, the contact parts of the forward driving group and the reverse driving group are oppositely arranged, and the periphery of the driven part is provided with a gear;

[0007] The wheel shaft of the guide wheel is connected and driven with the driving shaft on the driving part through a gear transmission mechanism, the first transverse moving mechanism comprises a first shaft body and a first screw block mechanism, the first shaft body is connected with a first driving screw of the first screw block mechanism through a gear transmission mechanism, a first sliding block of the first screw block mechanism is fixed with a compression plate of the spring damping part, the first shaft body is provided with a first gear meshing with the driven part of the forward driving group, and the first shaft body is provided with a second gear meshing with the driven part of the reverse driving group through a third gear;

[0008] The second transverse moving mechanism comprises a second shaft body and a second screw block mechanism, the second shaft body is connected with a second driving screw of the second screw block mechanism through a gear transmission mechanism, a sliding block connected with the second driving screw is connected with the limiting part, the second shaft body is provided with a fourth gear meshing with the driven part of the forward driving group, and the second shaft body is provided with a fifth gear meshing with the driven part of the reverse driving group through a sixth gear;

[0009] The driving part is fixed with the driving shaft, and the driven part is rotatably arranged with the driving shaft.

[0010] Further, the roller surface adopts magnetic rubber, the driving part is provided with a compensation part, the compensation part is arranged on the inner side of the roller, and the tension of the tension spring is compensated or reduced through magnetic attraction or repulsion.

[0011] Further, the spring damping component comprises a first plate, a second plate and springs, a plurality of springs are arranged between the first plate and the second plate, the first plate and the second plate are slidably arranged on the mounting base, the first slider is in contact with the first plate and is fixed, and a lead screw motor is fixed in the mounting base and is fixed in screw thread cooperation with the second plate.

[0012] Further, the equidistant spacing limiting grooves are arranged on the mounting rail outside the guide rail, the limiting grooves comprise inclined sections and supporting sections, the supporting sections are grooves matched with the limiting portions, and the inclined sections are arranged to be inclined from the outside to the inside.

[0013] Further, the slider is provided with a pressure sensor, and the pressure sensor transmits collected data to a terminal in real time through a wireless collection card.

[0014] Further, the mounting base is fixedly provided with a fixed seat matched with the car.

[0015] Further, the guide rail wheel adopts a hot melt tire wheel.

[0016] A speed-limiting control elevator comprises a car, a traction system and the elevator car guide rail wheel set assembly, the traction system is matched with the car, and the elevator car guide rail wheel set assembly is arranged in front of and behind the two sides of the top or bottom of the car and is matched with the guide rail.

[0017] Compared with the prior art, the elevator car guide rail wheel set assembly has the following advantages and effects: the elevator car guide rail wheel set assembly can realize speed reduction and hanging of the car during the uplink operation of the elevator, the structure is compact, installation is convenient, the overall structure of the existing elevator car and the traction system does not need to be changed, only the guide rail needs to be adapted, transformed and installed, and the transformation and installation difficulty is low and the invention is easy to popularize. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic view of the elevator car guide rail wheel set assembly of the embodiment of the present application.

[0019] Figure 2 is a schematic view of the connection between the elevator safety guide rail wheel and the elevator car.

[0020] Figure 3 is a schematic view of the internal structure of the elevator safety guide rail wheel.

[0021] Figure 4 is a structural schematic view of the forward driving group.

[0022] Figure 5 is a structural schematic diagram of the reverse drive group of the embodiment of the present application.

[0023] BRIEF DESCRIPTION OF DRAWINGS: guide wheel 1, guide rail 2, car 3, drive shaft 4, centrifugal clutch 5, first lateral movement mechanism 6, second lateral movement mechanism 7, limiting part 8, limiting groove 9, driving part 10, driven part 11, centrifugal hammer 12, tension spring 13, roller 14, inclined surface 15, groove 16, gear teeth 17, first shaft body 18, first screw block mechanism 19, second gear 20, third gear 21, second shaft body 22, second screw block mechanism 23, fourth gear 24, fifth gear 25, sixth gear 26, compensation part 27, first plate 28, second plate 29, spring part 30, mounting seat 31, inclined section 32, support section 33, auxiliary wheel 34, screw motor 35, fixed block 36, connecting seat 37, first gear 38, contact part 39, fixed seat 40, first helical gear set 41, second helical gear set 42, third helical gear set 43, fourth helical gear set 44, first sliding block part 45, second sliding block part 46. DETAILED DESCRIPTION

[0024] The present application will be further described in conjunction with the accompanying drawings and by way of examples, which are illustrative of the present application and the present application is not limited to the following examples.

[0025] Referring to Figures 1-5 , the present embodiment is an elevator safety guide rail 2 wheel group, the guide wheel 1 is attached to the guide rail 2 and rotates with the car 3 up and down; the rotation of the guide wheel 1 is transmitted to the driving shaft (in the present embodiment, as shown in Figure 3 , the wheel shaft of the guide wheel 1 is linked with the driving shaft through the first helical gear set 41 and the second helical gear set 42), the driving shaft is provided with a centrifugal clutch 5, after exceeding a predetermined speed, the driving part of the centrifugal clutch 5 drives the driven part 11 to rotate, the connecting seat of the guide wheel 1 is connected with the fixed seat in transverse sliding connection and connected with the spring damping part, the driven part 11 transmits the rotation to the first lateral movement mechanism 6 to move inward, pushing the spring damping part to compress, the driven part 11 transmits the rotation to the second lateral movement mechanism 7 to move outward, adapting the limiting part 8 on the second lateral movement mechanism 7 with the limiting groove 9 provided on the guide rail 2.

[0026] The elevator safety guide rail 2 wheel set related to the embodiment is used for installing and arranging on the car 3, and is matched with the elevator guide rail 2. The main working principle is that, in the overspeed operation of the elevator, the guide rail wheel rotates on the guide rail 2 quickly, drives the clutch to act, and makes the driven part 11 rotate, drives the first transverse moving mechanism 6 to move inward, drives the guide wheel 1 to press the guide rail 2, increases the friction, and makes the elevator decelerate, and at the same time, the second transverse moving mechanism 7 drives the limiting part 8 to be matched with the limiting groove 9 and arranged on the limiting groove 9, so that the car 3 can be supported by the limiting part 8 after deceleration.

[0027] In the embodiment, the centrifugal clutch 5 includes a forward driving group and a reverse driving group. The forward driving group and the reverse driving group include a driving part 10 and a driven part 11. The driving part 10 is provided with a centrifugal hammer 12 and a pull spring 13. One end of the centrifugal hammer 12 is eccentrically hinged on the driving part 10, and the other end of the centrifugal hammer 12 is provided with a roller 14. The roller 14 is arranged with one end heavier than the other end. One end of the pull spring 13 is fixed with the driving part 10, and the other end of the spring is fixed with one end of the roller 14 of the centrifugal hammer 12. The inner side of the driven part 11 is provided with a contact part. One side of the contact part is an inclined surface 15, and the other side is a radially extending surface provided with a groove 16 matched with the roller 14. The contact parts of the forward driving group and the reverse driving group are arranged in opposite directions. The periphery of the driven part 11 is provided with a gear tooth 17.

[0028] The wheel shaft of the guide wheel 1 is connected and driven with the driving shaft on the driving part 10 through a gear transmission mechanism. The first transverse moving mechanism 6 includes a first shaft body 18 and a first screw block mechanism 19. The first shaft body 18 is connected with the first driving screw of the first screw block mechanism 19 through a gear transmission mechanism. The first sliding block of the first screw block mechanism 19 is fixed with the first plate 28 of the spring damping part. The first shaft body 18 is provided with a first gear 38 engaged with the driven part 11 of the forward driving group, and is provided with a second gear 20 engaged with the driven part 11 of the reverse driving group through a third gear 21. As shown in the embodiment, Figure 3 The first shaft body 18 is connected and driven with the first driving screw through a third bevel gear set 43. The first sliding block 45 is axially slidably arranged in the connecting seat 37 and is fixed with the first plate 28.

[0029] The second transverse moving mechanism 7 comprises a second shaft body 22 and a second screw block mechanism 23, the second shaft body 22 is connected with the second driving screw of the second screw block mechanism 23 through a gear transmission mechanism, the second driving screw is connected with the sliding block connected with the limiting part 8, the fourth gear 24 is arranged on the second shaft body 22 and engaged with the driven part 11 of the forward driving group, the fifth gear 25 is arranged on the second shaft body 22 and engaged with the driven part 11 of the reverse driving group through the sixth gear 26; the driving part 10 is fixed with the driving shaft, the driven part 11 is rotatably arranged with the driving shaft, the equidistantly spaced limiting grooves 9 are arranged on the mounting rail outside the guide rail 2, the limiting groove 9 comprises an inclined section 32 and a supporting section 33, the supporting section 33 is the groove 16 matched with the limiting part 8, the inclined section 32 is arranged to be inclined from the outside to the inside, and the limiting part 8 is arranged at the position of the groove 16, so that the car 3 can be supported, and the secondary bottom falling condition is reduced. As shown in the embodiment, Figure 3 The second shaft body 22 is connected with the second driving screw for driving through the fourth helical gear set 44, and the limiting part 8 is fixed on the second sliding block 46 matched with the second screw (the second sliding block 46 is axially slidably arranged in the connecting seat 37);

[0030] In order to adapt to the overspeed up and down running of the elevator, the first transverse moving mechanism 6 and the second transverse moving mechanism have consistent movement directions, so the forward driving group and the reverse driving group are arranged on the driving shaft. For example, in the down movement (bottom falling), in the overspeed running process, the centrifugal hammer 12 swings outward and is connected with the contact part, so as to drive the driven part 11 of the forward driving group to move, then under the action of the first gear 38 and the fourth gear 24, the first shaft body 18 and the second shaft body 22 are driven to move, and the corresponding first transverse moving mechanism 6 and second transverse moving mechanism 7 are driven to move. Similarly, in the up movement (top collision), in the overspeed running process, the centrifugal hammer 12 swings outward and is connected with the contact part, so as to drive the driven part 11 of the reverse driving group to move, then under the gear engagement transmission of the third gear 21 and the fourth gear 24, the first shaft body 18 and the second shaft body 22 are driven to move, and the corresponding first transverse moving mechanism 6 and second transverse moving mechanism 7 are driven to move. In the design of the structure, no matter whether the up movement or the down movement is performed, the movement directions of the first shaft body 18 and the second shaft body 22 are the same, which can effectively play a role in the overspeed running of the up and down movements, avoid the high-speed top collision and bottom falling conditions, further ensure the safety of the elevator in the daily running, and provide a new direction for the safety guarantee measures of the elevator by taking the movement momentum of the elevator guide rail 2 as a power source, thereby increasing the protection measures of the elevator.

[0031] In the embodiment, the roller 14 is made of magnetic rubber, the driving member 10 is provided with a compensation member 27, the compensation member 27 is arranged inside the roller 14, and is used for compensating or reducing the tension of the tension spring 13 through magnetic attraction or repulsion. In the implementation process, the tension of the tension spring 13 can be compensated or reduced by replacing the compensation member 27, so that the triggering speed of the forward driving group and the reverse driving group can be adaptively adjusted in the upward and downward movement of the elevator.

[0032] In the embodiment, the spring damping component includes a first plate member 28, a second plate member 29, and a spring member 30. The spring member 30 is arranged between the first plate member 28 and the second plate member 29. The first plate member 28 and the second plate member 29 are slidingly arranged on the mounting seat 31. The first sliding block is in contact with and fixed to the first plate member 28. The second plate member 29 is fixed with a screw rod motor 35 and is threadedly connected with a fixed block 36 in the mounting seat 31. In the structure, the initial contact pressure between the guide rail wheel and the guide rail 2 can be adjusted by the movement of the screw rod motor 35 in the installation and maintenance process, so that the guide rail wheel and the guide rail 2 can be normally contacted, and the guide rail wheel can be normally rotated in the upward and downward movement, so as to ensure the triggering action of the centrifugal clutch 5. On the other hand, the structure can be used to level the car 3, so as to ensure the stability of the upward and downward movement of the car 3. Further, the sliding block is provided with a pressure sensor. The pressure sensor transmits the collected data to the terminal in real time through a wireless collection card. The stability and the swing amplitude of the elevator in the running process can be obtained by the running change of the pressure value in the running process of the elevator. For example, if the pressure change amplitude is large, it indicates that the swing amplitude of the elevator is large, and the stability is abnormal. The abnormal swing fluctuation can be stopped for maintenance. In the embodiment, the guide rail wheel is made of a hot melt tire, so that the tire surface temperature is increased in the high-speed movement process, the tire is melted into a gel state, the contact area between the tire and the guide rail is increased, the friction is increased, and the deceleration effect is improved.

[0033] In the embodiment, the structure is applied to the elevator to form a safe and stable elevator system. Specifically, the elevator system includes the car 3, a traction system, and the elevator safety guide rail 2 wheel group. The traction system is adapted to the car 3. The mounting seat 31 is fixedly provided with a fixed seat fixed to the car 3. The elevator safety guide rail 2 wheel group is arranged in front of and behind the two sides of the top or the bottom of the car 3 and is adapted to the guide rail 2.

[0034] The above description in the specification is only an example of the present application. Those skilled in the art can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, as long as they do not deviate from the content of the specification or exceed the scope defined by the claims.

Claims

1. An elevator car guide wheel set assembly, characterized by: The guide wheel is in contact with the guide rail and rotates with the car moving up and down; the rotation of the guide wheel is transmitted to the driving shaft, the driving shaft is provided with a centrifugal clutch, after exceeding a predetermined rotating speed, the driving part of the centrifugal clutch drives the driven part to rotate, the connecting seat of the guide wheel is in transverse sliding connection with the fixed seat and is connected with the spring damping part, the driven part transmits the rotation to the first transverse moving mechanism to move inward, pushes the spring damping part to compress, the driven part transmits the rotation to the second transverse moving mechanism to move outward, and the limiting part on the second transverse moving mechanism is matched with the limiting groove provided on the guide rail; The centrifugal clutch comprises a forward driving group and a reverse driving group, the forward driving group and the reverse driving group comprise a driving part and a driven part, the driving part is provided with a centrifugal hammer and a tension spring, one end of the centrifugal hammer is eccentrically connected to the driving part, the other end of the centrifugal hammer is provided with a roller, the weight of one end of the roller is greater than that of the other end, one end of the tension spring is fixed to the driving part, and the other end of the tension spring is fixed to the end of the centrifugal hammer provided with the roller, the inner side of the driven part is provided with a contact part, one side of the contact part is an inclined surface, the other side is a radially extending surface and is provided with a groove matched with the roller, the contact parts of the forward driving group and the reverse driving group are arranged in opposite directions, and the periphery of the driven part is provided with a gear tooth. The wheel shaft of the guide wheel is connected and driven with the driving shaft on the driving part through a gear transmission mechanism, the first transverse moving mechanism comprises a first shaft body and a first screw block mechanism, the first shaft body is connected with a first driving screw of the first screw block mechanism through a gear transmission mechanism, a first sliding block of the first screw block mechanism is fixed with a first plate of the spring damping part, the first shaft body is provided with a first gear meshing with the driven part of the forward driving group, and the first shaft body is provided with a second gear meshing with the driven part of the reverse driving group through a third gear; The second transverse moving mechanism comprises a second shaft body and a second screw block mechanism, the second shaft body is connected with a second driving screw of the second screw block mechanism through a gear transmission mechanism, a sliding block connected with the second driving screw is connected with the limiting part, the second shaft body is provided with a fourth gear meshing with the driven part of the forward driving group, and the second shaft body is provided with a fifth gear meshing with the driven part of the reverse driving group through a sixth gear; The driving part is fixed with the driving shaft, and the driven part is rotatably arranged with the driving shaft.

2. The elevator car guide wheel assembly of claim 1, wherein: The roller is made of magnetic rubber, the driving part is provided with a compensation part, the compensation part is arranged on the inner side of the roller, and the tension of the tension spring is compensated or reduced through magnetic attraction or repulsion.

3. The elevator car guide wheel assembly of claim 2, wherein: The spring damping part comprises a first plate, a second plate and a spring, a plurality of springs are arranged between the first plate and the second plate, the first plate and the second plate are slidably arranged on the mounting seat, the first sliding block is in contact with and fixed to the first plate, and the second plate is fixed with a screw motor and is threadedly connected with a fixed block in the mounting seat.

4. The elevator car guide wheel assembly of claim 3, wherein: The limiting groove is arranged on the mounting rail outside the guide rail, and comprises an inclined section and a supporting section.

5. The elevator car guide wheel assembly of claim 4, wherein: The slider is provided with a pressure sensor which transmits collected data to a terminal in real time through a wireless collection card.

6. The elevator car guide wheel assembly of claim 5, wherein: The guide rail wheel is arranged vertically to the side of the car, and the guide rail is further provided with an auxiliary wheel which is vertically arranged to the direction of the guide rail wheel and is in contact with the guide rail.

7. The elevator car guide wheel assembly of claim 6, wherein: The mounting seat is fixedly provided with a fixed seat which is fixed to the car.

8. The elevator car guide wheel assembly of claim 7, wherein: The guide rail wheel adopts a hot melt tire wheel.

9. An elevator characterized by: The elevator car guide rail wheel assembly comprises a car, a traction system and any one of the elevator car guide rail wheel assemblies according to claims 1-6, the traction system is matched with the car, and the elevator car guide rail wheel assembly is arranged on the front and back of the two sides of the top or bottom of the car and is matched with the guide rail.

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