Wedge block type rope clamping device and elevator rescue system

Abstract

The utility model relates to the technical field of elevators, in particular to a wedge block type rope clamping device and an elevator rescue system. The elevator rescue rope clamping device comprises a rope clamping opening, and the rope clamping opening is used for placing a speed limiter rope of an elevator; the rope clamping assembly is used for driving the rope clamping opening to clamp the speed limiter rope; wherein the rope clamping assembly comprises a shell, a fixed wedge block and a movable wedge block, the fixed wedge block is fixedly arranged in the shell, and the movable wedge block is arranged in the shell in an up-down sliding mode; the fixed wedge block and the movable wedge block are respectively provided with a rope groove, and the rope groove of the fixed wedge block and the rope groove of the movable wedge block form the rope clamping opening in a surrounding mode. In the downward sliding process of the movable wedge block, the distance between the rope grooves in the fixed wedge block and the rope grooves in the movable wedge block is gradually shortened. The rope clamping opening and the speed governor rope cannot slip, synchronous movement of the rope clamping opening and the speed governor rope is guaranteed, and the rescue speed is increased.

Description

Technical Field

[0001] The present application relates to the technical field of elevators, and in particular to a wedge-type rope clamping device and an elevator rescue system. Background Art

[0002] If a machine-room-less elevator experiences a sudden power outage during operation, the elevator car will stop suddenly at any position in the hoistway. Rescue personnel must release the main engine brake, exploiting the weight difference between the car and the counterweight to move the car downward or upward until it reaches level ground. At that point, the main engine brake will bring the car to a stop. However, when an elevator malfunctions, there are usually people inside, adding to the car's weight. When the car's weight and the counterweight become so close that they cannot be balanced, even if the main engine brake is released, the car will remain stationary, rendering the rescue effort ineffective.

[0003] Therefore, rescuers usually carry a rope clamp device and clamp it to the limiter wire rope. Then, by pulling the rope clamp device, the limiter wire rope moves, thereby pulling the car down to the level position. However, the existing rope clamp device is prone to slipping between the limiter wire rope and the puller, which affects the rescue. Utility Model Content

[0004] Based on this, it is necessary to provide a wedge-type rope clamping device and an elevator rescue system that has a firm clamping and is not easy to slip.

[0005] A wedge-type rope clamping device for elevator rescue, comprising:

[0006] A rope clamping opening, wherein the rope clamping opening is used to place the speed governor rope of the elevator;

[0007] a rope clamping assembly, the rope clamping assembly being used to drive the rope clamping opening to clamp the speed governor rope;

[0008] In which, the rope clamping assembly includes a shell, a fixed wedge block, and a movable wedge block, the fixed wedge block is fixed in the shell block, and the movable wedge block is slidable up and down in the shell block; the fixed wedge block and the movable wedge block are respectively provided with rope grooves, and the rope grooves of the fixed wedge block and the rope grooves of the movable wedge block are arranged to form the rope clamping opening; when the movable wedge block slides downward, the distance between the rope grooves on the fixed wedge block and the movable wedge block gradually shortens.

[0009] In one embodiment, a slide groove is provided on the shell, and the movable wedge block is slidably engaged with the slide groove; a sliding portion is provided on the movable wedge block, and the sliding portion is slidably engaged with the slide groove; the slide groove is extended along the moving direction of the movable wedge block.

[0010] In one embodiment, the end of the sliding portion passes through the sliding groove and extends out of the side wall of the shell, and the end of the sliding portion is connected to a baffle, the diameter of the baffle is set to be larger than the width of the sliding groove; the end of the sliding portion is provided with a limiting portion for preventing the baffle from sliding off.

[0011] In one embodiment, the slide groove is inclined from a side away from the fixed wedge block to a side close to the fixed wedge block; the end faces of the movable wedge block and the fixed wedge block opposite to each other extend vertically and are parallel to each other.

[0012] In one embodiment, the fixed wedge and the movable wedge are respectively provided with hooks at positions close to the rope clamping opening, and the hooks of the fixed wedge and the movable wedge are extended toward each other.

[0013] In one embodiment, the rope groove extends along the height direction of the housing, and at least one anti-slip groove is provided on the rope groove, and a plurality of anti-slip grooves are spaced apart along the length direction of the rope groove.

[0014] In one embodiment, the shell cross-section is a C-shaped structure, and the two ends of the C-shaped structure respectively constitute a first cavity and a second cavity, the movable wedge block is installed in the first cavity, and the fixed wedge block is installed in the second cavity; the movable wedge block and the fixed wedge block are respectively installed in the corresponding cavity from the notch of the C-shaped structure.

[0015] In one embodiment, the width of the movable wedge gradually decreases from top to bottom.

[0016] In one embodiment, a slope is provided on a side of the lower portion of the movable wedge away from the fixed wedge, and the slope is inclined from top to bottom.

[0017] In one embodiment, a connecting bolt is provided at the lower portion of the movable wedge, and a connecting rope is passed through the connecting bolt and connected to the connecting bolt.

[0018] The present application also provides an elevator rescue system, comprising the wedge-type rope clamping device according to any one of the above embodiments; the elevator rescue system further comprises:

[0019] a connecting rope connected to the lower portion of the movable wedge;

[0020] a reeling member connected to the connecting rope and capable of rotating about its own axis for reeling in the connecting rope; during the process of the reeling member reeling in the connecting rope, the connecting rope can drive the movable wedge to move downward;

[0021] A driving member, used for driving the winding member to rotate;

[0022] The gear transmission deceleration and torque increasing device is connected to the output shaft of the winding member and the driving member, and is used for reducing the rotation of the output shaft and transmitting it to the rotation of the winding member.

[0023] In one embodiment, the gear transmission deceleration and torque increasing device includes a small gear set and a large gear set, the small gear set is connected to the output shaft of the driving member, the large gear set is connected to the winding member, and the small gear set and the large gear set are meshed for transmission.

[0024] Compared to the existing technology, the movable wedge in this application can move downward relative to the fixed wedge, shortening the distance between the two, thereby firmly clamping the speed governor rope. Furthermore, during the rescue process, the movable wedge will continue to receive pulling force, remaining in the downward position, thereby clamping the speed governor rope tighter and tighter, ensuring that the rope clamping opening and the speed governor rope do not slip, ensuring the synchronous movement of the two, and improving the rescue speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the conventional technology, the following briefly introduces the drawings required for use in the embodiments or the conventional technology descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 This is a structural diagram of the elevator rescue system for this application.

[0027] Figure 2 This is a schematic structural diagram of the rope clamp assembly in this application.

[0028] Figure 3 for Figure 10 Rear view of the center rope assembly.

[0029] Figure 4 for Figure 10 Top view of the center rope assembly.

[0030] Figure 5 This is a schematic diagram of the structure of the gear transmission deceleration and torque increasing device in this application.

[0031] Figure 6 for Figure 5 Schematic diagram of the structure after removing the shell.

[0032] Figure 7 This is a schematic diagram of the structure of the driving member and the pinion gear set in this application.

[0033] Figure 8 This is a schematic diagram of the structure of the driving component in this application.

[0034] Figure 9 This is a schematic diagram of the structure of the winding and large gear set in this application.

[0035] Figure 10 This is a schematic diagram of the structure of the volume collection in this application.

[0036] Figure 11 This is a schematic diagram of the structure of the box in this application.

[0037] Reference numerals: 10, wedge-type rope clamping device; 11, rope clamping opening; 12, rope clamping assembly; 13, housing; 13a, first chamber; 13b, second chamber; 131, fixed wedge; 132, movable wedge; 133, slide; 134, anti-slip groove; 135, slide; 135a, baffle; 135b, nut; 136, connecting bolt; 137, hook; 138, inclined surface; 139, rope groove; 20, connecting rope; 30, reeling member; 31, second axle; 32, baffle; 33, sleeve; 34 4. Split pin; 40. Driving member; 41. Turntable; 42. First axle; 43. Handle; 50. Gear transmission speed reduction and torque increase 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. Housing; 551. First through hole; 552. Second through hole; 553. Kit; 56. Connecting arm; 561. Interface. DETAILED DESCRIPTION

[0038] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0039] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0041] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it can mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it can mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. When a first feature is "below," "below," or "below" a second feature, it can mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is lower in level than the second feature.

[0042] 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 art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments 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 relevant listed items.

[0043] This application is applicable to machine-room-less elevators (machine-room-less passenger elevators, machine-room-less freight elevators, and machine-room-less villa elevators) equipped with speed limiter wire ropes. This application is used to pull or drag the speed limiter wire rope, causing the elevator car to slide downward synchronously with the speed limiter wire rope, ultimately allowing the elevator car to reach the car level position, thereby achieving elevator rescue.

[0044] See also Figures 1 to 11 The present application provides an elevator rescue system, which includes a wedge-type rope clamping device 10, a connecting rope 20, a reeling member 30, a driving member 40, and a gear-driven deceleration and torque-increasing device 50. The wedge-type rope clamping device 10 includes a rope clamping port 11 and a rope clamping assembly 12. The rope clamping port 11 is used to place the elevator's speed governor rope, and the rope clamping assembly 12 is used to drive the rope clamping port 11 to clamp the speed governor rope.

[0045] The rope clamping assembly 12 includes a housing 13, a fixed wedge 131, and a movable wedge 132. The fixed wedge 131 is fixedly mounted within the housing 13 and can slide upward and downward therein. Rope grooves 139 are provided in the fixed wedge 131 and the movable wedge 132, respectively. The rope grooves 139 of the fixed wedge 131 and the movable wedge 132 enclose the rope clamping opening 11. As the movable wedge 132 slides downward, the distance between the rope grooves 139 in the fixed wedge 131 and the movable wedge 132 gradually decreases.

[0046] The connecting rope 20 is connected to the lower portion of the movable wedge 132. The reeling member 30 is used to reel in the connecting rope 20. The reeling member 30 is connected to the connecting rope 20 and can rotate about its own axis. As the reeling member 30 reels in the connecting rope 20, the connecting rope 20 drives the movable wedge 132 downward. The driving member 40 is used to rotate the reeling member 30. The gear-driven speed-reducing and torque-increasing device 50 drives the output shaft connecting the reeling member 30 and the driving member 40, reducing the rotation of the output shaft to the rotation of the reeling member 30.

[0047] It is understood that when an elevator rescue is required, the wedge-type rope clamp 10 is first clamped to the speed governor rope. The driver 40 is then activated, and the rotation of the driver 40 output shaft is transmitted to the reel-up member 30 via the gear transmission speed reduction and torque multiplication device 50. The reel-up member 30 then begins to rotate about its axis, reeling in the connecting rope 20. The reeled-in connecting rope 20 shortens, pulling the wedge-type rope clamp 10 downward. This pulls the speed governor rope downward, causing the elevator car to move back to the floor level, thus enabling the rescue.

[0048] In this manner, rescue operations can be performed without the aid of sandbags, compensation chains, etc., and the rescue response is quick and convenient. Furthermore, a gear transmission deceleration and torque-increasing device 50 is provided to decelerate and increase the output torque, thereby enabling the car to be moved with less force, thereby reducing the output torque requirement of the drive member 40.

[0049] The connecting rope 20 can be made of a steel wire rope, which has strong toughness and strength and can withstand the pulling force that pulls 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.

[0050] During the process of the winding member 30 winding up the connecting rope 20 , the rope clamping assembly 12 drives the rope clamping opening 11 to apply a clamping force to the speed governor rope that gradually increases.

[0051] It is understandable that the length of the connecting rope 20 is shortened after being reeled in, thereby pulling the wedge-type rope clamping device 10 downward. The wedge-type rope clamping device 10 pulls the speed limiter rope to move downward, thereby causing the elevator car to move and return to the level position, thereby achieving elevator rescue. During the reeling process, the rope clamping assembly 12 can drive the rope clamping mouth 11 to gradually increase the clamping force applied to the speed limiter rope. That is, while pulling the speed limiter rope downward, the rope clamping mouth 11 can also clamp the speed limiter rope tighter and tighter, ensuring that there is no slippage between the rope clamping mouth 11 and the speed limiter rope during the pulling process, ensuring the synchronous movement of the two, and increasing the rescue speed. At the same time, the two are prevented from slipping, causing the elevator car to float up and down during the downward movement, thereby avoiding affecting the trapped people inside the elevator.

[0052] Understandably, as the reel 30 retracts the connecting rope 20, the connecting rope 20 tightens, thereby applying tension to the lower portion of the movable wedge 132, thereby pulling the movable wedge 132 downward. This in turn causes the movable wedge 132 to shift 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, causing the rope clamping opening 11 to clamp the speed governor rope tighter and tighter. This ensures that the rope clamping opening 11 and the speed governor rope do not slip during the pulling process, ensuring the synchronous movement of the two and increasing the rescue speed. At the same time, this prevents the two from slipping, which could cause the elevator car to float up and down during the downward movement, thereby preventing any impact on trapped people inside the elevator.

[0053] During operation, the movable wedge 132 is moved upward to a position where the distance between the movable wedge 132 and the fixed wedge 131 is greater than the limiter rope, and then the limiter rope is placed in the rope clamping opening 11 between the movable wedge 132 and the fixed wedge 131. Then, the movable wedge 132 is pushed downward to clamp the limiter rope. The operation is simple and fast, saving time and effort.

[0054] Furthermore, the housing 13 is provided with a sliding groove 133, and the movable wedge 132 is slidably engaged with the sliding groove 133. That is, the sliding groove 133 plays a certain guiding and limiting role for the movable wedge 132, ensuring that the movable wedge 132 can move closer to the fixed wedge 131 during the process of moving downward along the sliding groove 133, thereby shortening the distance between the movable wedge 132 and the fixed wedge 131.

[0055] Preferably, the slide groove 133 extends along the moving direction of the movable wedge 132. In one embodiment, the slide groove 133 is located on the side of the housing 13 that accommodates the movable wedge 132, and the slide groove 133 extends obliquely from top to bottom in a direction gradually approaching the fixed wedge 131, so that the movable wedge 132 can move closer to the fixed wedge 131 under the guidance of the slide groove 133 during its downward movement.

[0056] In other embodiments, the mating end surface of one of the movable wedge 132 and the fixed wedge 131 may be designed as an inclined surface. This inclined surface guides the movable wedge 132 toward the fixed wedge 131 during downward movement, thereby cooperating with the fixed wedge to clamp the limiter rope. The mating end surface refers to the opposing end surfaces of the movable wedge 132 and the fixed wedge 131.

[0057] Furthermore, the slide groove 133 is tilted from the side 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 with the rope groove 139) extend vertically and are parallel to each other.

[0058] Furthermore, a sliding portion 135 is provided on the movable wedge 132 , and the sliding portion 135 is slidably engaged with the sliding groove 133 .

[0059] In this embodiment, the slide groove 133 is configured as a long strip groove formed on the side wall of the housing 13. The sliding portion 135 is configured as a protrusion protruding outward from the side wall of the movable wedge 132. The protrusion is inserted into the slide groove 133 and slidably engages with the slide groove 133.

[0060] Furthermore, the end of the sliding portion 135 passes through the chute 133 and extends out of the side wall of the housing 13. The end of the sliding portion 135 is connected to a stopper 135a. The diameter of the stopper 135a is set to be larger than the width of the chute 133 to prevent the protrusion from falling out of the chute 133. Exemplarily, a limit portion is provided at the end of the sliding portion 135. In one embodiment, the limit portion is a nut 135b. The nut 135b can be screwed to the end of the sliding portion 135b, or a fastener with a nut 135b can be directly used as the sliding portion 135 to prevent the stopper 135a from falling out of the protrusion.

[0061] In one embodiment, the housing 13 has a C-shaped cross-section, with the ends of the C-shaped structure forming a first cavity 13a and a second cavity 13b, respectively. A movable wedge 132 is installed in the first cavity 13a, and a fixed wedge 131 is installed in the second cavity 13b. The movable wedge 132 and the fixed wedge 131 are installed in their respective cavities through the notches in the C-shaped structure.

[0062] Specifically, a connecting bolt 136 is provided at the lower portion of the movable wedge 132. The connecting rope 20 is passed through the connecting bolt 136 and connected to the connecting bolt 136. The connecting bolt 136 is preferably a swing bolt, and the connecting rope 20 is preferably a steel wire rope. The end of the connecting rope 20 is passed through the opening of the swing bolt and then tied to the connecting rope 20 itself, thereby achieving connection with the connecting bolt 136. The connection operation is simple and the structure is simple.

[0063] Furthermore, the fixed wedge 131 and the movable wedge 132 are each provided with a hook portion 137 near the rope clamping opening 11. The hook portion 137 of the fixed wedge 131 and the hook portion 137 of the movable wedge 132 extend toward each other. The hook portions 137 act as a stopper, effectively preventing the limiter rope from escaping from the rope clamping opening 11.

[0064] In this embodiment, the hook portion 137 is provided on a side where the fixed wedge 131 and the movable wedge 132 are close to each other. Specifically, it is a protrusion formed by extending from the fixed wedge 131 and the movable wedge 132.

[0065] For example, the rope groove 139 extends along the height direction of the housing 13. The cross section is preferably semicircular to better fit the speed governor rope. In order to increase the friction between the rope groove 139 and the speed governor rope, at least one anti-slip groove 134 is provided on the rope groove 139.

[0066] Preferably, the diameter of the rope groove 139 is smaller than the diameter of the limiter rope. This ensures full contact between the rope groove 139 and the limiter rope. Furthermore, while the limiter rope is squeezed by the rope groove 139, it is also squeezed synchronously by the movable wedge 132 and the fixed wedge 131, enhancing the clamping effect on the limiter rope.

[0067] Preferably, multiple anti-skid grooves 134 are provided, and the plurality of anti-skid grooves 134 are spaced apart along the length of the rope groove 139. Anti-skid grooves 134 are provided at various locations along the length of the rope groove 139 to increase friction and prevent the speed governor rope from becoming detached from the rope groove 139. The number of anti-skid grooves 134 can be selected based on the application and is not specifically limited.

[0068] In this embodiment, the anti-slip groove 134 is configured as a slot opened on the side wall of the rope groove 139 , and the width of the anti-slip groove 134 is consistent with the width of the rope groove 139 .

[0069] Furthermore, the width of the movable wedge 132 gradually decreases from top to bottom. That is, the lower width of the movable wedge 132 is smaller, and it can be placed in the housing 13 more conveniently.

[0070] Specifically, a slope 138 is provided on the side of the lower portion of the movable wedge 132 away from the fixed wedge 131, and the slope 138 is tilted from top to bottom, thereby reducing the width of the lower portion of the movable wedge 132 and reducing the difficulty of assembly.

[0071] like Figures 5 to 10 As shown, the gear transmission speed reduction and torque increase 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 and transmitted.

[0072] 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.

[0073] Specifically, the transmission between the output shaft of the drive member 40 and the take-up member 30 is achieved through the small gear set 51 and the large gear set 52. The large gear set 52 has a larger diameter than the small gear set 51, resulting in a slower rotational speed and a higher torque than the small gear set 51. This reduces the output power and torque of the drive member 40, thereby reducing the output power and torque of the drive member 40. Furthermore, the use of the large and small gear sets 51 for transmission offers a simple structure, stable transmission, and a low risk of failure.

[0074] Furthermore, 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.

[0075] Preferably, the diameter of the large gear set 52 is three times that 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. With this ratio, the large gear set 52 is not excessively large, making it easier to operate within the hoistway, while also achieving a good deceleration and torque-increasing effect.

[0076] Of course, this is not limited to this. In other embodiments, the speed value can be selected according to actual needs.

[0077] Specifically, the drive member 40 includes a turntable 41 and a handle 43 mounted on the turntable 41. A pinion gear set 51 is connected to the turntable 41 and rotates coaxially with the turntable 41. The handle 43 is positioned near the edge of the turntable 41. The connection between the two can be welded, screwed, or otherwise selected based on actual needs.

[0078] Understandably, by manually gripping the handle 43 and applying force, the turntable 41 is driven to rotate, which in turn drives the reeling member 30 to rotate through the transmission. No electrical components such as motors are required, which reduces the manufacturing cost of the device and also reduces the size of the device, making it easier to operate in the hoistway and facilitating rescue operations.

[0079] Furthermore, the diameter of the turntable 41 is set to 2-10 times the diameter of the small gear set 51. Thus, the torque ratio between the turntable 41 and the small gear set 51 is 1:2-10. After transmission through the large gear set 52, the torque ratio between the turntable 41 and the winding member 30 can reach 1:4-50.

[0080] That is, applying a very small force on the handle 43 can amplify it by several dozen times, so that the reel-up member 30 can be easily driven to rotate to reel in the connecting rope 20 under manual operation, thereby pulling the speed governor rope to slide.

[0081] For example, the diameter of the rotating disk 41 is preferably set to six times the diameter of the pinion gear set 51. This means that the torque ratio between the rotating disk 41 and the pinion gear set 51 is 1:6. Furthermore, since the torque ratio between the pinion gear set 51 and the large gear set 52 is 1:3, the torque ratio between the rotating disk 41 and the winding element 30 is 1:18. This greatly increases torque, achieving labor-saving operation and creating a multi-power toolbox.

[0082] Furthermore, the turntable 41 is provided with a first axle 42, and the output shaft is the first axle 42. The first axle 42 is located 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. The pinion gear 511 is sleeved on the first axle 42 and is fixedly connected to the first axle 42 via the first connecting member 512.

[0083] In this embodiment, the first connecting member 512 is a flat key, and a keyway 53 that cooperates with the flat key is provided on the pinion 511 and the first axle 42. Of course, in other embodiments, the pinion 511 and the first axle 42 can also be connected in other ways, which will not be described here.

[0084] Optionally, the pinion gear assembly 51 further includes a first bearing 513. At least two first bearings 513 are provided, each of which is sleeved on the first axle 42 and disposed on either side of the pinion gear 511. The first bearings 513 are secured to the first axle 42 via a circlip 54. This arrangement allows for smoother rotation of the first axle 42 relative to the gearbox.

[0085] In this embodiment, two first bearings 513 are provided, and they can be directly purchased on the market without limitation on the model. Of course, in other embodiments, the number of 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.

[0086] Furthermore, the reeling member 30 is provided with a second axle 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 axle 31 and is fixedly connected to the second axle 31 via the second connecting member 522.

[0087] In this embodiment, the second connecting member 522 is a flat key, and a keyway 53 that matches the flat key is provided on the large gear 521 and the second axle 31. Of course, in other embodiments, the large gear 521 and the second axle 31 can also be connected in other ways, which will not be described here.

[0088] Furthermore, the large gear assembly 52 also includes second bearings 523. At least two second bearings 523 are provided, each of which is sleeved on the second axle 31 and located on either side of the large gear 521. The second bearings 523 are secured to the second axle 31 via a circlip 54. This arrangement allows for smoother rotation of the second axle 31 relative to the gearbox.

[0089] In this embodiment, two second bearings 523 are provided, and they can be directly purchased on the market without limitation on the model. 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.

[0090] Specifically, the winding 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 gap is formed between the two baffles 32 for winding the connecting rope 20.

[0091] Furthermore, both baffles 32 and the sleeve 33 are sleeved onto the second axle 31 and positioned on the second axle 31 by a cotter pin 34. Specifically, one end of the second axle 31 passes through one baffle 32, a sleeve 33, and the other baffle 32 in sequence, with the two baffles 32 abutting against each other via the sleeve 33. Two cotter pins 34 are provided, positioned correspondingly on the outside of the two baffles 32. One end of the cotter pin 34 radially penetrates the second axle 31, while the other end of the cotter pin 34 protrudes from the second axle 31 and abuts against the baffle 32, thereby securing the baffle 32 and preventing the baffle 32 and sleeve 33 from falling off the second axle 31.

[0092] The sleeve 33 and the second axle 31 each have a hole, and the holes of the two are connected to each other. The end of the connecting rope 20 passes through the hole to achieve connection with the reel 30. Of course, in other embodiments, the connection between the connecting rope 20 and the reel 30 can also be achieved by other methods, which will not be described in detail here.

[0093] like Figure 11 As shown, the elevator rescue system further includes a housing 55, in which the gear transmission deceleration and torque-increasing device 50 is disposed. The housing 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 disposed in the first through-hole 551, and the retracting member 30 is partially rotatably disposed in the second through-hole 552.

[0094] For example, the second axle 31 on the reel 30 is inserted into the second through hole 552 and can rotate relative to the second through hole 552. The position of each component is limited by the box 55, the first through hole 551 and the second through hole 552 to ensure stable operation of the device.

[0095] Preferably, a sleeve 553 is provided in each of the first through hole 551 and the second through hole 552. The sleeve 553 can be a bearing sleeve. When the components are installed in the housing 55, the first bearing 513 on the first axle 42 and the second bearing 523 on the second axle 31 are respectively engaged with the sleeve 553 to ensure smooth rotation of the first axle 42 and the second axle 31.

[0096] Furthermore, the box body 55 is provided with a connecting arm 56, and an interface 561 is provided on one end of the connecting arm 56 away from the box body 55. It can be fixed to the elevator guide rail by connecting members such as bolts, and then the entire box body 55 is fixed in the hoistway to facilitate the implementation of rescue operations.

[0097] Optionally, the interface 561 is an oblong hole, that is, an oblong hole or a rectangular hole, which facilitates slight position adjustment of the gear box.

[0098] Optionally, the connecting arm 56 is configured as an L-shaped structure, which provides better fixing and supporting effect on the box body 55 .

[0099] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0100] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of patent protection for the present application shall be determined by the appended claims.

Claims

1. A wedge-type rope clamping device for elevator rescue, characterized in that: include: A rope clamping opening (11), wherein the rope clamping opening (11) is used for placing a speed governor rope of an elevator; A rope clamping assembly (12), the rope clamping assembly (12) is used to drive the rope clamping port (11) to clamp the speed limiter rope; The rope clamping assembly (12) comprises a housing (13), a fixed wedge (131), and a movable wedge (132); the fixed wedge (131) is fixed in the housing (13), and the movable wedge (132) is slidably arranged in the housing (13); rope grooves (139) are respectively provided on the fixed wedge (131) and the movable wedge (132); the rope grooves (139) of the fixed wedge (131) and the rope grooves (139) of the movable wedge (132) are arranged to form the rope clamping opening (11); when the movable wedge (132) slides downward, the distance between the rope grooves (139) on the fixed wedge (131) and the movable wedge (132) gradually shortens.

2. The wedge-type rope clamp device according to claim 1, characterized in that: The housing (13) is provided with a slide groove (133), and the movable wedge block (132) is slidably matched with the slide groove (133); the movable wedge block (132) is provided with a sliding portion (135), and the sliding portion (135) is slidably matched with the slide groove (133); the slide groove (133) is extended along the moving direction of the movable wedge block (132).

3. The wedge-type rope clamp device according to claim 2, characterized in that: The end of the sliding portion (135) passes through the sliding groove (133) and extends out of the side wall of the shell (13), and the end of the sliding portion (135) is connected to a blocking piece (135a), and the diameter of the blocking piece (135a) is set to be larger than the width of the sliding groove (133); the end of the sliding portion (135) is provided with a limiting portion for preventing the blocking piece (135a) from sliding down.

4. The wedge-type rope clamp device according to claim 2, characterized in that: The slide groove (133) is tilted from a side away from the fixed wedge block (131) to a side close to the fixed wedge block (131); the end faces of the movable wedge block (132) and the fixed wedge block (131) opposite to each other extend vertically and are parallel to each other.

5. The wedge-type rope clamp device according to claim 1, characterized in that: The fixed wedge block (131) and the movable wedge block (132) are respectively provided with hook portions (137) near 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) are extended toward each other.

6. The wedge-type rope clamp device according to claim 1, characterized in that: The rope groove (139) is extended along the height direction of the housing (13), and at least one anti-slip groove (134) is provided on the rope groove (139); a plurality of anti-slip grooves (134) are distributed at intervals along the length direction of the rope groove (139).

7. The wedge-type rope clamp device according to claim 1, characterized in that: The shell (13) has a C-shaped cross-section, with two ends of the C-shaped structure forming a first cavity (13a) and a second cavity (13b), respectively; the movable wedge (132) is installed in the first cavity (13a), and the fixed wedge (131) is installed in the second cavity (13b); the movable wedge (132) and the fixed wedge (131) are respectively installed in the corresponding cavities through the notch of the C-shaped structure.

8. The wedge-type rope clamp device according to claim 1, characterized in that: The width of the movable wedge (132) gradually decreases from top to bottom; a slope (138) is provided on the side of the lower portion of the movable wedge (132) away from the fixed wedge (131), and the slope (138) is tilted from top to bottom.

9. The wedge-type rope clamp device according to claim 1, characterized in that: A connecting bolt (136) is provided at the lower portion of the movable wedge (132), and a connecting rope (20) is passed through the connecting bolt (136) and connected to the connecting bolt (136).

10. An elevator rescue system, characterized in that: The elevator rescue system comprises a wedge-type rope clamping device (10) according to any one of claims 1 to 8; the elevator rescue system further comprises: a connecting rope (20), the connecting rope (20) being connected to the lower portion of the movable wedge (132); A reeling member (30) is connected to the connecting rope (20) and can rotate around its own axis to reel in the connecting rope (20); when the reeling member (30) reels in the connecting rope (20), the connecting rope (20) can drive the movable wedge (132) to move downward; A driving member (40) for driving the winding member (30) to rotate; A gear transmission deceleration and torque increasing device (50) is connected to the output shaft of the winding member (30) and the driving member (40) and is used to decelerate the rotation of the output shaft and transmit it to the rotation of the winding member (30).

Images