Elevator rescue system

Abstract

The utility model relates to the technical field of elevators, in particular to an elevator rescue system. Comprising a rope clamping device used for clamping and fixing on a proper position of a speed limiter rope; the connecting rope is connected with the rope clamping device; the winding piece is connected with the connecting rope, can rotate around the axis of the winding piece and is used for winding the connecting rope; the driving piece is used for driving the furling piece to rotate; and the transmission speed reduction device is in transmission connection with the furling piece and the output shaft of the driving piece and is used for reducing and transmitting the rotation of the output shaft to the rotation of the furling piece. The rescue operation is convenient and fast.

Description

Technical Field

[0001] This application relates to the technical field of elevators, and particularly to an elevator rescue system. Background Art

[0002] During the operation of a machine-room-less elevator, in case of a sudden power failure, the elevator car will suddenly stop at any position in the hoistway. Rescue personnel need to release the brake of the main machine and utilize the weight difference between the car and the counterweight to make the car move downward or upward. When the car moves to the leveling position, the car is then stopped at the leveling position by applying the brake of the main machine.

[0003] However, when the elevator fails, there are usually people in the car, which increases the weight of the car. When the weight of the car and the counterweight device are close enough that the relative balance cannot be broken, even if the brake of the main machine is released, the car still remains stationary, resulting in the failure of the brake release to achieve the purpose of elevator rescue. If there are sandbags on site, the weight balance between the elevator car and the counterweight can be broken by stacking sandbags on the car top to make the car move downward to the leveling position. If the elevator on site has a compensating chain, the rescue personnel can also pull the compensating chain to make the car move downward to the leveling position. If there are neither sandbags nor a compensating chain on site, the rescue will be in a difficult situation.

[0004] Therefore, there is an urgent need to develop a rescue system that can break the static balance between the car and the counterweight by pulling a certain component of the elevator without relying on on-site sandbags and compensating chains, so as to make the car move. Summary of the Utility Model

[0005] Based on this, it is necessary to provide an elevator rescue system that can pull the elevator to move.

[0006] An elevator rescue system includes:

[0007] A rope clamping device for clamping and fixing at an appropriate position on the governor rope;

[0008] A connecting rope connected to the rope clamping device;

[0009] A winding and receiving member connected to the connecting rope, which can rotate around its own axis for winding the connecting rope;

[0010] A driving member for driving the winding and receiving member to rotate;

[0011] A transmission and reduction device is in transmission connection with the winding and receiving member and the output shaft of the driving member, and is used for reducing the rotation speed of the output shaft and transmitting it to the rotation of the winding and receiving member.

[0012] In one embodiment, the transmission and reduction device includes a pinion gear set and a large gear set. The pinion gear set is connected to the output shaft of the driving member, the large gear set is connected to the winding and receiving member, and the pinion gear set is in meshing transmission with the large gear set.

[0013] In one embodiment, the driving member includes a turntable and a handle provided on the turntable. The pinion gear set is connected to the turntable and rotates coaxially therewith.

[0014] In one embodiment, the torque ratio between the turntable and the pinion gear set is 1:2 - 10, the torque ratio between the pinion gear set and the large gear set is 1:2 - 5, and the torque ratio between the turntable and the winding and receiving member is 1:4 - 50.

[0015] In one embodiment, the turntable is provided with a first wheel shaft, and the output shaft is the first wheel shaft; the pinion gear set includes a pinion gear and a first connecting member. The pinion gear is sleeved on the first wheel shaft and is non-rotatably connected to the first wheel shaft through the first connecting member; the pinion gear set further includes a first bearing. At least two first bearings are provided, and the two first bearings are sleeved on the first wheel shaft and are respectively arranged on both sides of the pinion gear.

[0016] In one embodiment, the winding and receiving member is provided with a second wheel shaft. The large gear set includes a large gear and a second connecting member. The large gear is sleeved on the second wheel shaft and is non-rotatably connected to the second wheel shaft through the second connecting member; the large gear set further includes a second bearing. At least two second bearings are provided, and the two second bearings are sleeved on the second wheel shaft and are respectively arranged on both sides of the large gear.

[0017] In one embodiment, the winding and receiving member includes two baffles and a sleeve. The sleeve is located between the two baffles, and one end of the sleeve abuts against one baffle, and the other end abuts against the other baffle; the two baffles and the sleeve are all sleeved on the second wheel shaft and are position-located on the second wheel shaft through split pins.

[0018] In one embodiment, the elevator rescue system further includes a box body. The transmission and reduction device is arranged in the box body; the box body is provided with a first through hole and a second through hole. The output shaft of the driving member is rotatably passed through the first through hole, and a part of the winding and receiving member is rotatably passed through the second through hole; the box body is provided with a connecting arm, and an interface is provided at one end of the connecting arm far away from the box body.

[0019] In one embodiment, kits are respectively arranged in the first through hole and the second through hole; the interface is an elongated hole.

[0020] In one embodiment, the rope clamping device includes a rope clamping opening and a rope clamping assembly. The rope clamping opening is used to place the governor rope, and the rope clamping assembly is used to drive the rope clamping opening to clamp the governor rope. During the process of the winding and receiving member winding the connecting rope, the clamping force applied by the rope clamping assembly to the governor rope through the rope clamping opening gradually increases.

[0021] Compared with the prior art, the elevator rescue system is fixed on the governor steel wire rope through the rope clamping device, and then the driving member is used to drive the winding and receiving member to rotate, wind the connecting rope, and then drive the rope clamping device to pull the governor steel wire rope, and further pull the elevator to move, so that the car is moved to the leveling position. The rescue operation can be realized without relying on sandbags, compensation chains, etc., which is convenient and fast. Secondly, a transmission and speed reduction device is also provided, and the output torque is decelerated and increased through the transmission and speed reduction device, so that the car can be pulled to move with a smaller force, reducing the requirement for the output torque of the driving member. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 It is a schematic structural diagram of the first embodiment of the present application.

[0024] Figure 2 It is a schematic structural diagram of the second embodiment of the present application.

[0025] Figure 3 It is a schematic structural diagram of the transmission and speed reduction device in the present application.

[0026] Figure 4 For Figure 3 the structural diagram after removing the housing in

[0027] Figure 5 It is a schematic structural diagram of the driving member and the small gear set in the present application.

[0028] Figure 6 It is a schematic structural diagram of the driving member in the present application.

[0029] Figure 7 It is a schematic structural diagram of the winding and receiving member and the large gear set in the present application.

[0030] Figure 8 It is a schematic structural diagram of the winding and receiving member in the present application.

[0031] Figure 9Schematic diagram of the structure of the box body in this application.

[0032] Figure 10 Schematic diagram of the structure of the first embodiment of the rope clamping assembly in this application.

[0033] Figure 11 Schematic diagram of the structure of the second embodiment of the rope clamping assembly in this application.

[0034] Figure 12 is Figure 10 the rear view of the rope clamping assembly in

[0035] Figure 13 is Figure 10 the top view of the rope clamping assembly in

[0036] Reference numerals: 10, rope clamping device; 11, rope clamping opening; 12, rope clamping assembly; 121, pliers body; 122, pliers mouth; 123, pliers hook; 124, anti-slip pad; 124a, anti-slip pattern; 125, handle; 125a, spring seat; 126, perforation; 127, elastic member; 13, housing; 13a, first cavity; 13b, second cavity; 131, fixed wedge; 132, movable wedge; 133, chute; 134, anti-slip groove; 135, sliding part; 135a, retaining piece; 135b, nut; 136, connecting bolt; 137, hook part; 138, inclined surface; 139, rope groove; 20, connecting rope; 30, winding and receiving part; 31, second wheel shaft; 32, baffle; 33, sleeve; 34, split pin; 40, driving member; 41, turntable; 42, first wheel shaft; 43, handle; 50, transmission and reduction device; 51, small gear set; 511, small gear; 512, first connecting member; 513, first bearing; 52, large gear set; 521, large gear; 522, second connecting member; 523, second bearing; 53, keyway; 54, circlip; 55, box body; 551, first through hole; 552, second through hole; 553, kit; 56, connecting arm; 561, interface. Detailed implementation manners

[0037] In order to make the above objects, features, and advantages of this application more obvious and understandable, the following will describe the detailed implementation manners of this application in conjunction with the accompanying drawings. Many specific details are set forth in the following description in order to fully understand this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of this application. Therefore, this application is not limited by the specific embodiments disclosed below.

[0038] It should be noted that when a component is referred to as "fixed to" or "disposed on" another component, it can be directly on the other component or there can also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are only for illustrative purposes and do not represent the only implementation.

[0039] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of this application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0040] In this application, unless otherwise clearly specified and defined, the first feature may be in direct contact with the second feature "on" or "under" the second feature, or the first feature and the second feature may be in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature has a lower horizontal height than the second feature.

[0041] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific implementations and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more of the related listed items.

[0042] This application is applicable to machine-roomless elevators (machine-roomless passenger elevators, machine-roomless freight elevators, machine-roomless villa elevators) with speed governor steel ropes. This application is used to tow or pull the speed governor steel rope so that the elevator car slides down synchronously with the speed governor steel rope, and finally enables the elevator car to reach the car leveling position to achieve elevator rescue.

[0043] Please refer to Figures 1 to 13The present application provides an elevator rescue system, which includes a rope clamping device 10, a connecting rope 20, a reeling member 30, a driving member 40 and a transmission reduction device 50. The rope clamping device 10 is used to clamp and fix on the appropriate position of the speed limiter rope. The connecting rope 20 is connected to the rope clamping device 10. The reeling member 30 is used to reel in the connecting rope 20, and the reeling member 30 is connected to the connecting rope 20 and can rotate around its own axis. The driving member 40 is used to drive the reeling member 30 to rotate. The transmission reduction device 50 transmits the output shaft connecting the reeling member 30 and the driving member 40, and is used to reduce the rotation of the output shaft to the rotation of the reeling member 30.

[0044] It is understandable that when an elevator rescue is required, the rope clamping device 10 is first clamped to the speed limiter rope, and then the driving member 40 is started, and the rotation of the output shaft of the driving member 40 is transmitted to the reeling member 30 through the transmission reduction device 50. The reeling member 30 begins to rotate around its own axis and reels the connecting rope 20. After the connecting rope 20 is reeled in, the length is shortened, and then the rope clamping device 10 is pulled down, and the rope clamping device 10 pulls the speed limiter rope to slide down, thereby causing the elevator car to move and return to the leveling position, and the elevator rescue is achieved.

[0045] In this way, the rescue operation can be realized without the aid of sandbags, compensation chains, etc., and the rescue response is fast and convenient. Secondly, a transmission reduction device 50 is also provided, through which the output torque is reduced and torque is increased, so that the car can be pulled to move with a smaller force, thereby reducing the output torque requirement of the driving member 40.

[0046] The connecting rope 20 can be made of steel wire rope, which has strong toughness and strength and can withstand the pulling force brought by pulling the elevator car. Of course, the connecting rope 20 can also be made of other materials as long as the pulling force requirement is met.

[0047] See also Figures 3 - 9 The transmission reduction device 50 includes a small gear set 51 and a large gear set 52. The small gear set 51 is connected to the output shaft of the driving member 40, and the large gear set 52 is connected to the winding member 30. The small gear set 51 and the large gear set 52 are meshed for transmission.

[0048] It can be understood that the rotation of the output shaft of the driving member 40 drives the small gear set 51 to rotate, the small gear set 51 drives the large gear set 52 to rotate, and the rotation of the large gear set 52 drives the winding member 30 to rotate.

[0049] That is, the transmission between the output shaft of the driving member 40 and the winding member 30 is realized through the small gear set 51 and the large gear set 52. The diameter of the large gear set 52 is larger than that of the small gear set 51. Its rotational speed after rotation is lower than that of the small gear set 51, and the torque is greater than that of the small gear set 51. Therefore, it plays a role in reducing speed and increasing torque, reducing the output power and output torque of the driving member 40. Moreover, by adopting the transmission method of the large and small gear sets 51, the structure is simple, the transmission is stable, and it is not easy to fail.

[0050] Further, the diameter of the large gear set 52 is 2-5 times the diameter of the small gear set 51. Therefore, the torque ratio between the small gear set 51 and the large gear set 52 is 1:2-5. The transmission ratio between the small gear set 51 and the large gear set 52 is 2-5:1.

[0051] Preferably, the diameter of the large gear set 52 is 3 times the diameter of the small gear set 51. Therefore, the torque ratio between the small gear set 51 and the large gear set 52 is 1:3. The transmission ratio between the small gear set 51 and the large gear set 52 is 3:1. At this multiple value, the volume of the large gear set 52 will not be too large, which is convenient for operation in the hoistway, and at the same time, a good effect of reducing speed and increasing torque can be achieved.

[0052] Of course, it is not limited to this. In other embodiments, the multiple speed value can be selected according to actual needs.

[0053] Specifically, as Figures 5 - 6 shown, the driving member 40 includes a turntable 41 and a handle 43 provided on the turntable 41. Among them, the small gear set 51 is connected to the turntable 41 and rotates coaxially. The handle 43 is arranged at a position close to the edge of the turntable 41, and their connection can be by welding, screwing, etc., and is specifically selected according to actual needs.

[0054] It can be understood that by manually holding the handle 43 and applying force, the turntable 41 can be driven to rotate, and then the winding member 30 can be driven to rotate through transmission. There is no need to set up electrical components such as motors, which reduces the manufacturing cost of the device, and at the same time reduces the volume of the device, making the device easier to operate in the hoistway and facilitating rescue operations.

[0055] Further, the diameter of the turntable 41 is set to be 2-10 times the diameter of the small gear set 51. Furthermore, the torque ratio between the turntable 41 and the small gear set 51 is 1:2-10. After being transmitted by the large gear set 52, the torque ratio between the turntable 41 and the winding member 30 can reach 1:4-50.

[0056] That is, by applying a very small force on the handle 43, it can be amplified by dozens of times, so that the winding member 30 can be easily driven to rotate manually to wind the connecting rope 20, and then the speed limiter rope can be pulled to slide.

[0057] Exemplarily, the diameter of the turntable 41 is preferably set to be 6 times the diameter of the pinion gear set 51. That is, the torque ratio between the turntable 41 and the pinion gear set 51 is 1:6. Also, since the torque ratio between the pinion gear set 51 and the large gear set 52 is 1:3, therefore, the torque ratio between the turntable 41 and the winding and receiving part 30 is 1:18. This greatly increases the torque, realizes labor-saving operation, and forms a force-multiplying toolbox.

[0058] Further, the turntable 41 is provided with a first wheel shaft 42, and the output shaft is the first wheel shaft 42. The first wheel shaft 42 is disposed at the center of the turntable 41 and is integrally formed with the turntable 41. The pinion gear set 51 includes a pinion gear 511 and a first connecting member 512. Among them, the pinion gear 511 is sleeved on the first wheel shaft 42 and is non-rotatably connected to the first wheel shaft 42 through the first connecting member 512.

[0059] In this embodiment, the first connecting member 512 is a flat key, and key grooves 53 that cooperate with the flat key are respectively provided on the pinion gear 511 and the first wheel shaft 42. Of course, in other embodiments, other connection methods may also be adopted between the pinion gear 511 and the first wheel shaft 42, which will not be elaborated here.

[0060] Optionally, the pinion gear set 51 further includes a first bearing 513. Among them, at least two first bearings 513 are provided. The two first bearings 513 are sleeved on the first wheel shaft 42 and are respectively disposed on both sides of the pinion gear 511. The first bearing 513 is fixed on the first wheel shaft 42 through an elastic retaining ring 54. The setting of the bearing makes the rotation of the first wheel shaft 42 relative to the gearbox smoother.

[0061] In this embodiment, two first bearings 513 are provided and can be directly purchased on the market, and the model is not limited. Of course, in other embodiments, the number of the first bearings 513 can also be set to three, four or even more to further improve the smoothness of the rotation of the first wheel shaft 42.

[0062] Further, a second wheel shaft 31 is provided on the winding and receiving part 30. The large gear set 52 includes a large gear 521 and a second connecting member 522. Among them, the large gear 521 is sleeved on the second wheel shaft 31 and is non-rotatably connected to the second wheel shaft 31 through the second connecting member 522.

[0063] In this embodiment, the second connecting member 522 is a flat key, and key grooves 53 that cooperate with the flat key are respectively provided on the large gear 521 and the second wheel shaft 31. Of course, in other embodiments, other connection methods may also be adopted between the large gear 521 and the second wheel shaft 31, which will not be elaborated here.

[0064] Further, the large gear set 52 further includes a second bearing 523. Among them, at least two second bearings 523 are provided. The two second bearings 523 are sleeved on the second wheel shaft 31 and are respectively arranged on both sides of the large gear 521. The second bearing 523 is fixed on the second wheel shaft 31 through an elastic retaining ring 54. The setting of the bearing makes the rotation of the second wheel shaft 31 relative to the gearbox smoother.

[0065] In this embodiment, two second bearings 523 are provided and can be directly purchased on the market, and the model is not limited. Of course, in other embodiments, the number of second bearings 523 can also be set to three, four or even more to further improve the smoothness of the rotation of the second wheel shaft 31.

[0066] Specifically, as Figure 8 , the winding and receiving member 30 includes two baffles 32 and a sleeve 33 located between the two baffles 32. One end of the sleeve 33 abuts against one of the baffles 32, and the other end abuts against the other baffle 32. Thus, a distance is formed between the two baffles 32 for the connecting rope 20 to wind.

[0067] Further, both the two baffles 32 and the sleeve 33 are sleeved on the second wheel shaft 31, and are positionally located on the second wheel shaft 31 through split pins 34. Specifically, one end of the second wheel shaft 31 sequentially passes through one baffle 32, the sleeve 33 and the other baffle 32, and the two baffles 32 are abutted against each other through the sleeve 33 in the middle. Two split pins 34 are provided, and the positions are respectively located outside the two baffles 32. One end of the split pin 34 radially penetrates the second wheel shaft 31, and the other end of the split pin 34 is exposed outside the second wheel shaft 31 and abuts against the baffle 32 to realize the positional location of the baffle 32 and prevent the baffle 32 and the sleeve 33 from disengaging from the second wheel shaft 31.

[0068] A hole is respectively provided on the sleeve 33 and the second wheel shaft 31, and the holes of the two communicate with each other. The end of the connecting rope 20 passes through the hole to realize the connection with the winding and receiving member 30. Of course, in other embodiments, the connection between the connecting rope 20 and the winding and receiving member 30 can also adopt other methods, which will not be elaborated here.

[0069] As Figure 9 shown, the elevator rescue system further includes a box body 55, and the transmission and reduction device 50 is arranged in the box body 55. Among them, a first through hole 551 and a second through hole 552 are provided on the box body 55. The output shaft of the driving member 40 is rotatably passed through the first through hole 551, and a part of the winding and receiving member 30 is rotatably passed through the second through hole 552.

[0070] Exemplarily, the second round shaft 31 on the winding receiver 30 is passed through the second through hole 552 and can rotate relative to the second through hole 552. The positions of various components are limited by the box body 55, the first through hole 551, and the second through hole 552 to ensure the stable operation of the equipment.

[0071] Preferably, a kit 553 is provided in each of the first through hole 551 and the second through hole 552. The kit 553 can be a bearing sleeve. When each component is installed in the box body 55, the first bearing 513 on the first round shaft 42 and the second bearing 523 on the second round shaft 31 are respectively sleeved with the kit 553 to ensure the smooth rotation of the first round shaft 42 and the second round shaft 31.

[0072] Furthermore, the box body 55 is provided with a connecting arm 56, and an interface 561 is provided at one end of the connecting arm 56 away from the box body 55. It can be fixed to the elevator guide rail through a connecting piece such as a bolt, and then the entire box body 55 is fixed in the hoistway to facilitate the implementation of rescue operations.

[0073] Optionally, the interface 561 is an elongated hole. That is, an oblong hole or a rectangular hole, which facilitates a slight position adjustment of the gearbox.

[0074] Optionally, the connecting arm 56 is arranged in an L-shaped structure, and the fixing and supporting effect on the box body 55 is better.

[0075] In this embodiment, the rope clamping device 10 includes a rope clamping opening 11 and a rope clamping assembly 12. The rope clamping opening 11 is used to place the governor rope, and the rope clamping assembly 12 is used to drive the rope clamping opening 11 to clamp the governor rope. And during the process of the winding receiver 30 winding the connecting rope 20, the clamping force applied by the rope clamping assembly 12 to the governor rope through the rope clamping opening 11 gradually increases.

[0076] It can be understood that after the connecting rope 20 is wound, its length is shortened, which in turn pulls the rope clamping device 10 downward. The rope clamping device 10 pulls the governor rope to move downward, which in turn causes the elevator car to move and return to the leveling position, realizing elevator rescue. During the winding process, the rope clamping assembly 12 can drive the rope clamping opening 11 to gradually increase the clamping force applied to the governor rope. That is, while pulling the governor rope to move downward, the rope clamping opening 11 can also clamp the governor rope tighter and tighter, ensuring that there is no slipping between the rope clamping opening 11 and the governor rope during the pulling process, ensuring their synchronous movement, and improving the rescue speed. At the same time, it avoids the elevator car from floating up and down during the downward movement due to the slipping between the two, and avoids affecting the trapped people inside the elevator.

[0077] In one embodiment, as Figure 10As shown, the rope clamping assembly 12 includes two clamping bodies 121, and the two clamping bodies 121 are hinged to each other to present a pliers shape. The two clamping bodies 121 respectively have clamping jaws 122 and handles 125. Among them, the rope clamping opening 11 is arranged at the clamping jaws 122 of the clamping body 121. One end of the connecting rope 20 is connected to the winding and receiving member 30, and the other end is respectively connected to the handles 125 of the two clamping bodies 121.

[0078] Understandably, the clamping jaws 122 and the handles 125 are respectively located on both sides of the hinge joint of the two clamping bodies 121. The working principle of the rope clamping assembly 12 is the same as that of pliers, which is convenient to operate and can quickly clamp the limiter rope. That is, an inward acting force is applied to the handles 125 of the two clamping bodies 121, so that the two handles 125 approach each other, and the clamping jaws 122 of the two clamping bodies 121 can turn inwards around the hinge joint and then approach each other to clamp the object between the two clamping jaws 122, that is, the limiter rope.

[0079] Therefore, when the connecting rope 20 is wound up, it will pull the two handles 125 to approach each other, so that the two clamping jaws 122 approach each other, reducing the width of the rope clamping opening 11, and then clamping the limiter rope. During the winding process of the connecting rope 20, a pulling force will be continuously applied to the handle 125, so that the rope clamping opening 11 clamps the limiter rope tighter and tighter, with firm clamping. At the same time, it drives the speed limiter rope clamped in the rope clamping opening 11 to move synchronously with the winding action of the connecting rope 20.

[0080] Furthermore, an elastic member 127 is arranged between the handles 125 of the two clamping bodies 121, and both ends of the elastic member 127 are respectively connected to the handles 125 of the two clamping bodies 121.

[0081] Understandably, the existence of the elastic member 127 provides a certain pulling force to the two handles 125, preventing the two handles 125 from separating randomly in the state without external force tightening and preventing the clamping jaws 122 from opening randomly.

[0082] When clamping the limiter rope, a certain external force needs to be applied outward to the handle 125 to overcome the pre-tightening force of the elastic member 127, so that the two clamping jaws 122 open a certain distance, and the limiter rope can be placed in. After the limiter rope is placed into the rope clamping opening 11, the external force applied to the handle 125 is removed. The handles 125 approach each other under the pulling of the elastic member 127, driving the clamping jaws 122 to approach each other and pressing the limiter rope. Even if the connecting rope 20 has not started to be wound up, the rope clamping device 10 will not fall off the limiter rope, preventing personal injury.

[0083] Optionally, the elastic member 127 is disposed near the connection position of the connecting rope 20 and the handle 125. The elastic member 127 is a spring. Of course, in other embodiments of the present invention, the elastic member 127 can also be selected as other structures such as elastic sheets. A spring seat 125a is provided inside the pliers handle 125, and both ends of the elastic member 127 are respectively connected to the spring seats 125a on the two handles 125. In this embodiment, the spring seat 125a is a bolt, one end of the nut is located outside the handle 125, and one end of the screw passes through the handle 125 and then is connected to the elastic member 127.

[0084] Further, clamping hooks 123 are respectively provided at one ends of the jaws 122 of the two pliers bodies 121 away from the handle 125, and a rope clamping opening 11 is formed by enclosing the clamping hooks 123 and the jaws 122. The arrangement of the clamping hooks 123 prevents the limiter rope from slipping out of the rope clamping opening 11.

[0085] Exemplarily, the clamping hooks 123 on the two pliers bodies 121 and the pliers bodies 121 are of an integral structure and are arranged to extend towards each other.

[0086] Further, an anti-slip pad 124 is provided at a position of the jaw 122 near one end of the clamping hook 123. When the jaw 122 is pressed against the limiter rope, the anti-slip pad 124 can increase the friction force with the limiter rope and further reduce the probability of slipping between the two.

[0087] Exemplarily, anti-slip lines 124a extending horizontally are provided on the anti-slip pad 124. In one embodiment, a plurality of grooves are provided on the anti-slip pad 124, and the plurality of grooves extend horizontally and are spaced vertically to form the above-mentioned anti-slip lines 124a on the surface of the anti-slip pad. The anti-slip lines can further increase the friction force with the limiter rope and further reduce the probability of slipping between the two.

[0088] Exemplarily, the anti-slip pad 124 is made of rubber, with a simple structure and low cost. Of course, the anti-slip pad 124 can also be made of other materials as long as the requirement of increasing the friction force is met.

[0089] Further, a through hole 126 is provided at one end of the handle 125 away from the jaw 122, and the connecting rope 20 is passed through the through hole 126. Specifically, the end of the connecting rope 20 passes through the through hole 126 and then is connected to the main body of the connecting rope 20 to realize the connection between the connecting rope 20 and the handle 125.

[0090] In one embodiment, as Figures 11 - 13As shown in the figure, the rope clamping assembly 12 includes a housing 13, a fixed wedge 131 and a movable wedge 132. Among them, the fixed wedge 131 is fixed in the housing 13, the movable wedge 132 is connected to the connecting rope 20, and is slidably arranged in the housing 13 up and down. Rope grooves 139 are respectively provided on the fixed wedge 131 and the movable wedge 132, and the rope groove 139 of the fixed wedge 131 and the rope groove 139 of the movable wedge 132 enclose a rope clamping opening 11. During the downward sliding process of the movable wedge 132, the distance between the rope grooves 139 on the fixed wedge 131 and the movable wedge 132 gradually shortens.

[0091] Understandably, during the process of winding up the connecting rope 20, the movable wedge 132 will be pulled downward, and then the position of the movable wedge 132 will move relative to the fixed wedge 131. During the downward movement, the distance between the rope grooves 139 on the fixed wedge 131 and the movable wedge 132 shortens, that is, the diameter of the rope clamping opening 11 decreases, so that the rope clamping opening 11 clamps the speed limiter rope tighter and tighter, ensuring that there is no slipping between the rope clamping opening 11 and the speed limiter rope during the pulling process, ensuring the synchronous movement of the two, and improving the rescue speed. At the same time, it is avoided that the two slip and cause the elevator car to float up and down during the downward movement, so as not to affect the trapped people inside the elevator.

[0092] During operation, move the movable wedge 132 upward until the distance between the movable wedge 132 and the fixed wedge 131 is greater than the position of the limiter rope, and then place the limiter rope into the rope clamping opening 11 between the movable wedge 132 and the fixed wedge 131. Then push the movable wedge 132 downward to clamp the limiter rope, and the operation is simple, fast, time-saving and labor-saving.

[0093] Furthermore, a chute 133 is provided on the housing 13, and the movable wedge 132 is slidably engaged with the chute 133. That is, the chute 133 plays a certain guiding and limiting role for the movable wedge 132, ensuring that the movable wedge 132 can approach the fixed wedge 131 during the downward movement along the direction of the chute 133, so as to shorten the distance between the movable wedge 132 and the fixed wedge 131.

[0094] Preferably, the chute 133 extends along the moving direction of the movable wedge 132. In one embodiment, the chute 133 is located on one side of the housing 13 that accommodates the movable wedge 132, and the chute 133 extends obliquely downward from top to bottom in the direction of gradually approaching the fixed wedge 131, so that the movable wedge 132 can approach the fixed wedge 131 under the guidance of the chute 133 during the downward movement.

[0095] Furthermore, the chute 133 is inclined from the side far away from the fixed wedge 131 to the side close to the fixed wedge 131. The end faces of the movable wedge 132 opposite to the fixed wedge 131 (i.e., the end faces provided with the rope grooves 139) extend vertically and are parallel to each other.

[0096] In other embodiments, the mating end face of either the movable wedge block 132 or the fixed wedge block 131 can also be designed to have an inclined surface structure. During the downward movement of the movable wedge block 132 guided by the inclined surface structure, the movable wedge block 132 approaches the fixed wedge block 131, and in cooperation with the fixed wedge block 131, the purpose of clamping the limiter rope is achieved. Herein, the mating end face refers to the respective end faces of the movable wedge block 132 and the fixed wedge block 131 that face each other.

[0097] Further, a sliding portion 135 is provided on the movable wedge block 132, and the sliding portion 135 is in sliding fit with the sliding groove 133.

[0098] In this embodiment, the sliding groove 133 is provided as a long strip-shaped groove opened on the side wall of the housing 13. The sliding portion 135 is provided as a convex portion protruding outward from the side wall of the movable wedge block 132. The convex portion passes through the sliding groove 133 and is in sliding fit with the sliding groove 133.

[0099] Further, the end portion of the sliding portion 135 passes through the sliding groove 133 and extends out of the side wall of the housing 13, and a retaining piece 135a is connected to the end portion of the sliding portion 135. The diameter of the retaining piece 135a is set to be larger than the width of the sliding groove 133 to prevent the convex portion from disengaging from the sliding groove 133. Exemplarily, a limiting portion is provided at the end portion of the sliding portion 135. In one embodiment, the limiting portion is a nut 135b. The nut 135b can be connected to the end portion of the sliding portion 135b in a screwed manner, or a fastener with a nut 135b can be directly used as the sliding portion 135 to prevent the retaining piece 135a from disengaging from the convex portion.

[0100] In one embodiment, the cross-section of the housing 13 is in a C-shaped structure. The two ends of the C-shaped structure respectively form a first cavity 13a and a second cavity 13b. The movable wedge block 132 is installed in the first cavity 13a, and the fixed wedge block 131 is installed in the second cavity 13b. The movable wedge block 132 and the fixed wedge block 131 are respectively installed into the corresponding cavities from the notch of the C-shaped structure.

[0101] Further, the connecting rope 20 is connected to the lower part of the movable wedge block 132. During the process of the winding and receiving member 30 winding the connecting rope 20, the connecting rope 20 can drive the movable wedge block 132 to move downward.

[0102] It can be understood that during the process of the winding and receiving member 30 winding the connecting rope 20, the connecting rope 20 will be tightened, so that the connecting rope 20 applies a pulling force to the lower part of the movable wedge block 132, thereby pulling the movable wedge block 132 to move downward.

[0103] Specifically, a connecting bolt 136 is provided at the lower part of the movable wedge block 132. The connecting rope 20 is threaded through the connecting bolt 136 and connected to the connecting bolt 136. The connecting bolt 136 is preferably a swivel bolt, and the connecting rope 20 is preferably a steel wire rope. After the end of the connecting rope 20 passes through the opening on the swivel bolt, it is tied to the connecting rope 20 itself, thus realizing the connection with the connecting bolt 136. The connection operation is simple and the structure is simple.

[0104] Further, hook portions 137 are respectively provided at positions of the fixed wedge block 131 and the movable wedge block 132 close to the rope clamping opening 11. And the hook portion 137 of the fixed wedge block 131 and the hook portion 137 of the movable wedge block 132 extend towards each other. The hook portion 137 functions as a stop block, effectively preventing the limiter rope from slipping out from the rope clamping opening 11.

[0105] In this embodiment, the hook portion 137 is provided on the side of the fixed wedge block 131 and the movable wedge block 132 close to each other. Specifically, it is a protrusion formed by extending from the fixed wedge block 131 and the movable wedge block 132.

[0106] Exemplarily, the rope groove 139 extends along the height direction of the housing 13. The cross-section is preferably semi-circular, which is more suitable for the speed limiter rope. In order to increase the friction between the rope groove 139 and the speed limiter rope, at least one anti-slip groove 134 is provided on the rope groove 139.

[0107] Preferably, the diameter of the rope groove 139 is set to be smaller than the diameter of the limiter rope. Ensure that the rope groove 139 and the limiter rope are in full contact. And while the limiter rope is being squeezed by the rope groove 139, it can also be synchronously squeezed by the movable wedge block 132 and the fixed wedge block 131, improving the clamping effect on the limiter rope.

[0108] Preferably, a plurality of anti-slip grooves 134 are provided, and the plurality of anti-slip grooves 134 are spaced apart along the length direction of the rope groove 139. There are anti-slip grooves 134 for increasing friction at various positions in the length direction of the rope groove 139, ensuring that the speed limiter rope will not disengage from the rope groove 139. The number of anti-slip grooves 134 can be selected according to the actual situation and is not specifically limited.

[0109] In this embodiment, the anti-slip groove 134 is provided as a groove opened on the side wall of the rope groove 139, and the width of the anti-slip groove 134 is the same as the width of the rope groove 139.

[0110] Further, the width of the movable wedge block 132 gradually decreases from top to bottom. That is, the lower part of the movable wedge block 132 has a smaller width, which can be more conveniently placed into the housing 13.

[0111] Specifically, a slope 138 is provided on the side of the lower part of the movable wedge block 132 away from the fixed wedge block 131, and the slope 138 is inclined from top to bottom. Thereby reducing the width of the lower part of the movable wedge block 132 and reducing the assembly difficulty.

[0112] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0113] The above-described embodiments merely represent several implementation manners of the present application, and the description thereof is relatively specific and detailed. However, it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application shall be subject to the appended claims.

Claims

1. An elevator rescue system, characterized in that, Comprising: A rope clamping device (10) for clamping and fixing at an appropriate position on the speed limiter rope; A connecting rope (20) connected to the rope clamping device (10); A winding and receiving member (30) connected to the connecting rope (20), capable of rotating around its own axis for winding the connecting rope (20); A driving member (40) for driving the winding and receiving member (30) to rotate; A transmission and reduction device (50) transmissionally connecting the output shaft of the winding and receiving member (30) and the driving member (40) for reducing the rotational speed of the output shaft and transmitting it to the rotation of the winding and receiving member (30).

2. The elevator rescue system according to claim 1, wherein The transmission and reduction device (50) includes a small gear set (51) and a large gear set (52). The small gear set (51) is connected to the output shaft of the driving member (40), the large gear set (52) is connected to the winding and receiving member (30), and the small gear set (51) is in meshing transmission with the large gear set (52).

3. The elevator rescue system according to claim 2, characterized in that, The driving member (40) includes a turntable (41) and a handle (43) provided on the turntable (41). The small gear set (51) is connected to the turntable (41) and rotates coaxially therewith.

4. The elevator rescue system according to claim 3, characterized in that, The torque ratio between the turntable (41) and the small gear set (51) is 1:2 - 10, the torque ratio between the small gear set (51) and the large gear set (52) is 1:2 - 5, and the torque ratio between the turntable (41) and the winding and receiving member (30) is 1:4 - 50.

5. The elevator rescue system according to claim 3, characterized in that, The turntable (41) is provided with a first wheel shaft (42), and the output shaft is the first wheel shaft (42); the small gear set (51) includes a small gear (511) and a first connecting member (512). The small gear (511) is sleeved on the first wheel shaft (42) and is non-rotatably connected to the first wheel shaft (42) through the first connecting member (512); the small gear set (51) further includes a first bearing (513). At least two first bearings (513) are provided, and the two first bearings (513) are sleeved on the first wheel shaft (42) and are respectively arranged on both sides of the small gear (511).

6. The elevator rescue system according to claim 3, wherein, The winding and receiving member (30) is provided with a second wheel shaft (31). The large gear set (52) includes a large gear (521) and a second connecting member (522). The large gear (521) is sleeved on the second wheel shaft (31) and is non-rotatably connected to the second wheel shaft (31) through the second connecting member (522); the large gear set (52) further includes a second bearing (523). At least two second bearings (523) are provided, and the two second bearings (523) are sleeved on the second wheel shaft (31) and are respectively arranged on both sides of the large gear (521).

7. The elevator rescue system according to claim 6, wherein, The coiling receiver (30) includes two baffles (32) and a sleeve (33). The sleeve (33) is located between the two baffles (32), and one end of the sleeve (33) abuts against one of the baffles (32), and the other end abuts against the other baffle (32). Both the two baffles (32) and the sleeve (33) are sleeved on the second axle (31), and are positioned on the second axle (31) through a split pin (34).

8. The elevator rescue system according to claim 1, characterized in that, The elevator rescue system further includes a box body (55). The transmission and reduction device (50) is arranged inside the box body (55). The box body (55) is provided with a first through hole (551) and a second through hole (552). The output shaft of the driving member (40) is rotatably arranged inside the first through hole (551), and a part of the coiling receiver (30) is rotatably arranged inside the second through hole (552). The box body (55) is provided with a connecting arm (56), and an interface (561) is arranged at one end of the connecting arm (56) away from the box body (55).

9. The elevator rescue system according to claim 8, wherein Sets (553) are respectively arranged inside the first through hole (551) and the second through hole (552). The interface (561) is an oblong hole.

10. The elevator rescue system according to claim 1, characterized in that, The rope clamping device (10) includes a rope clamping opening (11) and a rope clamping assembly (12). The rope clamping opening (11) is used for placing the governor rope, and the rope clamping assembly (12) is used for driving the rope clamping opening (11) to clamp the governor rope. And during the process of the coiling receiver (30) coiling the connecting rope (20), the clamping force applied by the rope clamping assembly (12) to the governor rope through the rope clamping opening (11) gradually increases.

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