Anti-jamming rope arrangement

Abstract

The application relates to the field of lifting equipment and discloses a rope arranging device capable of preventing tooth jamming, which is characterized by the following: a buffer mechanism is arranged between a rope arranging synchronous shaft and a direction-changing sun gear, the buffer mechanism enables the rope arranging synchronous shaft and the direction-changing sun gear to relatively rotate by a certain amplitude, when the steering driving gear is subjected to resistance of the first steering gear or the second steering gear during switching engagement, the steering driving gear can rotate with the direction-changing sun gear by a certain amplitude, the teeth on the steering driving gear can smoothly engage with the teeth on the first steering gear / second steering gear, and tooth jamming is prevented.

Description

Technical Field

[0001] This invention relates to the field of lifting equipment technology, and in particular to a rope arrangement device to prevent tooth jamming. Background Technology

[0002] Existing lifting equipment generally includes a motor, a rope winding shaft driven by the motor, and a rope wound on the rope winding shaft; the rope is wound and released by rotating the rope winding shaft to realize the lifting of people or objects; in order to facilitate the neat winding of the rope on the rope winding shaft, a rope arranger is used to organize the rope during the winding process.

[0003] Traditional rope arrangers, such as those described in Chinese patents CN204474221U and CN204232132U, utilize a bidirectional screw for rope arrangement. A slide plate is installed on the bidirectional screw to limit the rope's movement. The bidirectional screw has two opposing threaded grooves. When the slide plate reaches the end of one threaded groove, it jumps to engage with the other threaded groove, thus moving in the opposite direction and achieving reciprocating layering of the rope around the rope axis. Due to the high precision requirements of the bidirectional screw, its manufacturing cost and difficulty are also high; furthermore, the crescent-shaped component that enables the jumping within the bidirectional screw is easily damaged. The structure of the crescent-shaped component can be found in Chinese patent CN108853766A.

[0004] To address this, a rope arranger using a unidirectional screw to achieve the rope-arranging function has emerged. For example, the rope arranger with publication number CN113582061A drives the unidirectional screw to rotate via a first transmission path and a second transmission path. The first transmission path includes a first steering gear, the second transmission path includes a second steering gear, and a reversing drive mechanism is also included. This reversing drive mechanism includes a steering drive gear capable of switching between the first and second steering gears to drive one of them. However, during the switching process of the steering drive gear, if the gear transmission accuracy is insufficient or the gear reaches a certain wear level, it may cause a jamming problem when the steering drive gear engages with the first and second steering gears, further affecting the rope-arranging function. Summary of the Invention

[0005] In view of this, the present invention proposes a rope-laying device to prevent tooth jamming, aiming to achieve rope laying using a one-way screw while avoiding the problem of tooth jamming.

[0006] The technical solution of this invention is implemented as follows:

[0007] A rope-laying device for preventing tooth jamming, comprising:

[0008] The screw has a one-way threaded groove and is arranged parallel to the rope winding shaft;

[0009] A slide table, through which a rope on a rope shaft passes, the slide table being threadedly connected to the screw, the slide table being axially movable but circumferentially fixed on the screw;

[0010] The first transmission path is composed of an odd number of gears connected in sequence, with one end of the gear being connected to the screw and the other end of the gear being defined as the first steering gear.

[0011] The second transmission path is composed of a plurality of gears connected in sequence, with one end of the gear being connected to the screw and the other end of the gear being defined as the second steering gear.

[0012] The reversing drive mechanism includes a steering drive gear capable of switching between the first steering gear and the second steering gear to drive one of them; the steering drive gear rotates synchronously with the rope winding shaft;

[0013] The characteristic feature is that the reversing drive mechanism further includes:

[0014] A planetary carrier with a reversing direction, wherein a plurality of steering drive gears are provided on the planetary carrier, and the steering drive gears serve as planetary gears on the planetary carrier.

[0015] A rope-laying synchronous shaft rotates synchronously with the rope-winding shaft, and a reversing sun gear is fitted on it. The reversing sun gear meshes with the steering drive gear.

[0016] An intermittent transmission mechanism is used to realize intermittent transmission between the rope-laying synchronous shaft and the reversing planetary carrier;

[0017] A buffer mechanism is provided between the rope-laying synchronous shaft and the reversing sun gear. The buffer mechanism includes at least one transmission groove recessed in the inner wall of the reversing sun gear, at least one transmission block protruding in the outer wall of the rope-laying synchronous shaft, and an elastic buffer member.

[0018] The transmission block is disposed in the transmission groove. In the initial state, a buffer space is formed between the two side walls of the transmission block in the circumferential direction and the two side walls of the transmission groove in the circumferential direction.

[0019] The elastic buffer is used to apply an elastic preload to the reversing sun gear to restore the transmission block to its initial position.

[0020] As a further optional solution, the inner hole of the reversing sun gear includes, in sequence along the axial direction, a transmission hole section and a buffer hole section;

[0021] The transmission groove is disposed within the transmission hole section;

[0022] The inner wall of the buffer hole section is recessed to form a buffer guide groove, which includes two guide slopes; the edges of the two guide slopes that are far apart from each other intersect with the inner wall of the buffer hole section, and the edges of the two guide slopes that are close to each other intersect to form an abutment recess.

[0023] The rope-laying synchronous shaft is provided with mounting holes that are opened radially.

[0024] The elastic buffer includes a top ball slidably disposed in the mounting hole and an elastic element for driving the top ball away from the axis of the rope synchronizing shaft, wherein the top ball rolls against the guide slope of the buffer guide groove.

[0025] In the initial state, the top bead is located at the abutment recess of the buffer guide groove.

[0026] As a further optional solution, two of each of the transmission groove, transmission block, and buffer guide groove are provided;

[0027] The elastic buffer also includes a limiting cylinder, which is fixedly installed in the assembly hole of the rope synchronous shaft. The limiting cylinder is hollow inside and has openings at both ends. There are two top beads installed inside the limiting cylinder. The diameter of the openings at both ends of the limiting cylinder is smaller than the diameter of the top beads. The elastic element is a spring installed between the two top beads.

[0028] As a further optional solution, the two guide ramps within the buffer guide groove are symmetrically arranged.

[0029] As a further optional solution, the intermittent transmission mechanism includes:

[0030] An intermittent output component, wherein the intermittent output component is coaxially arranged and relatively fixed with the planetary carrier and the rope synchronous shaft;

[0031] An initial output gear is fixedly sleeved on the rope-laying synchronous shaft.

[0032] At least one first intermittent transmission body, the first intermittent transmission body being rotatably sleeved on the rope-laying synchronous shaft, one end of the first intermittent transmission body having a first gear meshing part, and the other end having an intermittent driven part;

[0033] At least one second intermittent transmission body is provided outside the first detection transmission body. One end of the second intermittent transmission body is formed with a second gear meshing part, and the other end is formed with an intermittent drive part.

[0034] Wherein, the second gear meshing part meshes with the first gear meshing part or the initial output gear; the intermittent drive part forms a Geneva transmission engagement with the intermittent driven part or the intermittent output member.

[0035] As a further optional solution, the intermittent transmission mechanism also includes a protective shell, inside which are provided three limiting shafts. The limiting shafts are fixed in position and are arranged parallel to the rope-laying synchronous shaft. The second intermittent transmission body is rotatably mounted on the limiting shafts.

[0036] As a further alternative, the intermittent drive unit is a dial equipped with a cylindrical pin, the intermittent driven unit is a Geneva structure, and the intermittent output unit is provided with a Geneva structure.

[0037] As a further optional solution, the angle between two adjacent steering drive gears and the central axis of the planetary carrier is a first angle, and the angle between the first steering gear, the second steering gear and the central axis of the planetary carrier is a second angle, with the first angle being twice the second angle; the rope synchronizing shaft rotates at the same speed as the screw.

[0038] As a further alternative, the slide includes two oppositely arranged rope-laying pulleys for clamping ropes, the outer circumferential surface of which has a hub portion for engaging the rope.

[0039] As a further optional solution, the slide is provided with a movable rope guide frame, and the rope pulley is rotatably mounted on the rope guide frame.

[0040] Compared with the prior art, the rope-laying device for preventing tooth jamming in this application has at least the following advantages:

[0041] The rope-laying device incorporates a buffer mechanism between the rope-laying synchronous shaft and the reversing sun gear. This buffer mechanism allows the rope-laying synchronous shaft and the reversing sun gear to rotate relative to each other by a certain amount. When the steering drive gear encounters resistance from the first or second steering gear during switching engagement, the steering drive gear can rotate with the reversing sun gear by a certain amount, ensuring that the teeth on the steering drive gear can smoothly mesh with the teeth on the first or second steering gear, thus preventing tooth jamming. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of a rope-arranging device for preventing tooth jamming according to an embodiment of the present invention;

[0043] Figure 2 This is a side view schematic diagram of a rope arrangement device for preventing tooth jamming according to an embodiment of the present invention;

[0044] Figure 3 yes Figure 2 Cross-sectional view of CC;

[0045] Figure 4This is a schematic diagram of an explosion prevention device for a rope arrangement device according to an embodiment of the present invention;

[0046] Figure 5 This is an exploded view of the intermittent transmission mechanism in an embodiment of the present invention;

[0047] Figure 6 This is an exploded schematic diagram of the modified sun gear and the rope synchronizing shaft in an embodiment of the present invention;

[0048] Figure 7 This is a schematic diagram of the axial engagement between the variable-phase sun gear and the rope-laying synchronous shaft in an embodiment of the present invention;

[0049] Figure 8 yes Figure 7 Cross-sectional view of DD;

[0050] Figure 9 yes Figure 8 A cross-sectional view of the middle EE (with the top bead in the abutment recess);

[0051] Figure 10 yes Figure 8 A cross-sectional view of the middle EE (with the top bead and the abutment recess misaligned);

[0052] Figure 11 This is a schematic diagram of the transmission and engagement of the intermittent output component, the initial output gear, the first intermittent transmission body, and the second intermittent transmission body in an embodiment of the present invention.

[0053] In the picture, 300, rope;

[0054] D0, Rope arrangement device;

[0055] D1, Screw;

[0056] D2, slide table; D21, rope guide frame; D22, rope pulley;

[0057] D3, First transmission path; D31, First steering gear;

[0058] D4, Second transmission path; D41, Second steering gear;

[0059] D5. Reversing drive mechanism; D51. Steering drive gear; D52. Reversing planetary carrier; D53. Rope-laying synchronous shaft; D531. Transmission block; D532. Assembly hole; D54. Reversing sun gear; D54a. Transmission hole section; D54b. Buffer hole section; D541. Transmission groove; D542. Buffer guide groove; D542a. Guide slope; D542b. Abutment recess; D55. Intermittent transmission mechanism; D551. Intermittent output component; D552. Initial output... Output gear; D553, first intermittent transmission body; D5531, first gear meshing part; D5532, intermittent driven part; D554, second intermittent transmission body; D5541, second gear meshing part; D5542, intermittent drive part; D555, protective shell; D5551, limiting shaft; D56, buffer mechanism; D561, elastic buffer element; D5611, limiting cylinder; D5612, elastic element; D5613, top ball; D562, buffer space;

[0060] G, the first included angle; H, the second included angle. Detailed Implementation

[0061] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0062] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0063] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0064] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0065] refer to Figure 1-11 An embodiment of the present invention shows a rope routing device for preventing tooth jamming, including a screw D1, a slide D2, a first transmission path D3, a second transmission path D4, and a reversing drive mechanism D5.

[0066] The screw D1 has a one-way threaded groove and is arranged parallel to the winding shaft. The rope 300 on the winding shaft passes through the slide D2, which is threadedly connected to the screw D1. The slide D2 is axially movable but circumferentially fixed on the screw D1. The first transmission path D3 is composed of an odd number of gears connected in sequence, with one end connected to the screw D1 and the other end defined as the first steering gear D31. The second transmission path D4 is composed of a plurality of gears connected in sequence, with one end connected to the screw D1 and the other end defined as the second steering gear D41. The reversing drive mechanism D5 includes a steering drive gear D51 that can switch between the first steering gear D31 and the second steering gear D41 to drive one of them. The steering drive gear D51 rotates synchronously with the winding shaft. The first transmission path D3 and the second transmission path D4 can be independent of each other, or the first transmission path D3 and the second transmission path D4 can partially overlap.

[0067] The reversing drive mechanism D5 includes a reversing planetary carrier D52, a rope-laying synchronous shaft D53, and an intermittent transmission mechanism D55. The reversing planetary carrier D52 is equipped with multiple steering drive gears D51, which serve as planetary gears on the reversing planetary carrier D52. The rope-laying synchronous shaft D53 rotates synchronously with the rope-winding shaft and is fitted with a reversing sun gear D54, which meshes with the steering drive gears D51. The intermittent transmission mechanism D55 is used to realize intermittent transmission between the rope-laying synchronous shaft D53 and the reversing planetary carrier D52. Figure 2As shown, the angle between the two adjacent steering drive gears D51 and the central axis of the planetary carrier D52 is the first angle G, and the angle between the first steering gear D31, the second steering gear D41 and the central axis of the planetary carrier D52 is the second angle H. The first angle G is twice the second angle H. The rope-laying synchronous shaft D53 rotates at the same speed as the screw D1.

[0068] The working principles of the screw D1, slide D2, first transmission path D3, second transmission path D4, and reversing drive mechanism D5 in the above structure can be referred to the prior art with publication number CN113582061A, and will not be elaborated here.

[0069] The rope-laying device D0 of the present invention is characterized by:

[0070] refer to Figure 6-10 A buffer mechanism D56 is provided between the rope-laying synchronous shaft D53 and the reversing sun gear D54. The buffer mechanism D56 includes at least one transmission groove D541 recessed in the inner wall of the reversing sun gear D54, at least one transmission block D531 protruding in the outer wall of the rope-laying synchronous shaft D53, and an elastic buffer member D561. The transmission block D531 is disposed in the transmission groove D541. In the initial state, a buffer space D562 is formed between the two circumferential side walls of the transmission block D531 and the two circumferential side walls of the transmission groove D541. The elastic buffer member D561 is used to apply an elastic preload to the reversing sun gear D54 to restore the transmission block D531 to its initial position.

[0071] Specifically, in the aforementioned initial state, when the steering drive gear D51 is not simultaneously engaged with the first steering gear D31 and the second steering gear D41, the steering drive gear D51 is not subjected to any external force from either the first steering gear D31 or the second steering gear D41. Figure 7 As shown, under the action of the elastic preload of the elastic buffer D561, a buffer space D562 is formed between the transmission block D531 and the inner wall of the transmission groove D541.

[0072] At the instant the steering drive gear D51 switches meshing with the first steering gear D31 / second steering gear D41, regardless of whether the teeth on the steering drive gear D51 are aligned and meshing with the teeth on the first steering gear D31 / second steering gear D41, during the revolution of the steering drive gear D51 around the reversing sun gear D54 driven by the reversing planetary carrier D52, the teeth on the steering drive gear D51 will experience resistance from the first steering gear D31 or the second steering gear D41. Since the steering drive gear D51 meshes with the reversing sun gear D54, the resistance experienced by the steering drive gear D51 will be transmitted to the reversing sun gear D54. This resistance will resist the elastic preload of the elastic buffer D561. The transmission groove D541 on the reversing sun gear D54 and the rope synchronous shaft D53... The moving block D531 will rotate relative to the transmission block D531, which means that the buffer space D562 on one side of the transmission block D531 shrinks while the buffer space D562 on the other side expands. That is, the reversing sun gear D54 can rotate relative to the rope arranging synchronous shaft D53 by a certain amount, and the steering drive gear D51 rotates with the reversing sun gear D54 by a certain amount, so that the steering drive gear D51 can smoothly mesh with the first steering gear D31 / second steering gear D41. The buffer space D562 allows the reversing sun gear D54 to rotate relative to the rope arranging synchronous shaft D53 within a range. At least, when the buffer space D562 on one side disappears or can no longer shrink, it means that the transmission block D531 can push against the inner wall of the transmission groove D541, and the rope arranging synchronous shaft D53 can drive the reversing sun gear D54 to rotate.

[0073] In some embodiments (not shown in this embodiment), the elastic buffer D561 can be two springs respectively provided in two buffer spaces D562, one end of the spring abutting against the inner sidewall of the transmission groove D541, and the other end abutting against the outer sidewall of the transmission block D531; the two springs keep the position of the transmission block D531 balanced in the transmission groove D541.

[0074] To improve the stability of the elastic buffer D561, in some other embodiments, reference is made to... Figure 6-10The inner bore of the reversing sun gear D54 includes, along the axial direction, a transmission section D54a and a buffer section D54b. The transmission groove D541 is disposed within the transmission section D54a. A buffer guide groove D542 is recessed into the inner wall of the buffer section D54b, and the buffer guide groove D542 includes two guide inclined surfaces D542a. The mutually distancing edges of the two guide inclined surfaces D542a intersect with the inner wall of the buffer section D54b. The edges that are close to each other meet and form an abutment recess D542b; the rope arranging synchronous shaft D53 is provided with a radially opened mounting hole D532; the elastic buffer member D561 includes a top ball D5613 slidably disposed in the mounting hole D532 and an elastic member D5611 for driving the top ball D5613 away from the axis of the rope arranging synchronous shaft D53, and the top ball D5613 rolls against the guide slope D542a of the buffer guide groove D542;

[0075] Specifically, under the guiding action of the guide slope D542a, when the top ball D5613 is pushed by the elastic member D5611, the top ball D5613 will move to the abutment recess D542b. Therefore, in the initial state, the steering drive gear D51 is not subjected to external force from the first steering gear D31 or the second steering gear D41. Figure 9 As shown, the top bead D5613 is located at the abutment recess D542b of the buffer guide groove D542; simultaneously, as Figure 7 As shown, a buffer space D562 is formed between the transmission block D531 and the inner wall of the transmission groove D541.

[0076] When the steering drive gear D51 is subjected to an external force, the reversing sun gear D54 is subjected to a torque that drives it to rotate. The guide ramp D542a will press against the top ball D5613, and the top ball D5613 will roll along the guide ramp D542a, as... Figure 10 As shown, the top bead D5613 is offset from the abutting recess D542b, and the reversing sun gear D54 rotates relative to the rope synchronous shaft D53 until the transmission block D531 abuts against the inner wall of the transmission groove D541.

[0077] The guide slope D542a can be a plane or a curved surface.

[0078] Preferably, to improve structural stability, two copies of each of the transmission groove D541, transmission block D531, and buffer guide groove D542 are provided; for example Figure 9 or Figure 10As shown, the elastic buffer D561 further includes a limiting cylinder D5611, which is fixedly disposed in the mounting hole D532 of the rope-laying synchronous shaft D53. The limiting cylinder D5611 is hollow inside and has openings at both ends. Two top balls D5613 are provided and disposed inside the limiting cylinder D5611. The diameter of the openings at both ends of the limiting cylinder D5611 is smaller than the diameter of the top balls D5613. The elastic element D5611 is a spring disposed between the two top balls D5613. In this way, the limiting cylinder D5611, the spring, and the top balls D5613 can be combined into a single component, which is convenient for assembly in the mounting hole D532. The top balls D5613 will not detach from the limiting cylinder D5611, ensuring the stability of the top balls D5613 within the buffer hole section D54b. In addition, the two guide ramps D542a within the buffer guide groove D542 are symmetrically arranged.

[0079] In the above scheme, the intermittent transmission mechanism D55 can refer to the structure in the prior art with publication number CN113582061A;

[0080] To further improve the stability of intermittent transmission, in this embodiment, such as Figure 2-4 as well as Figure 11 As shown, the intermittent transmission mechanism D55 includes:

[0081] Intermittent output component D551, wherein the intermittent output component D551 is coaxially arranged and relatively fixed with the planetary carrier D52 and the rope synchronous shaft D53;

[0082] The initial output gear D552 is fixedly sleeved on the rope synchronous shaft D53;

[0083] At least one first intermittent transmission body D553 is rotatably sleeved on the rope-laying synchronous shaft D53. One end of the first intermittent transmission body D553 has a first gear meshing part D5531, and the other end has an intermittent driven part D5532.

[0084] At least one second intermittent transmission body D554 is provided outside the first detection transmission body. One end of the second intermittent transmission body D554 is formed with a second gear meshing part D5541, and the other end is formed with an intermittent drive part D5542.

[0085] Wherein, the second gear meshing part D5541 meshes with the first gear meshing part D5531 or the initial output gear D552; the intermittent drive part D5542 forms a Geneva transmission engagement with the intermittent driven part D5532 or the intermittent output part D551.

[0086] It should be noted that, compared to the prior art disclosed in CN113582061A, this embodiment does not use incomplete gears to avoid the possibility of slippage, making the transmission of the intermittent transmission mechanism D55 more stable. Conventionally, the intermittent drive part D5542 is a dial equipped with a cylindrical pin, the intermittent driven part D5532 is a Geneva wheel structure, and the intermittent output part D551 is provided with a Geneva wheel structure. The Geneva transmission fit in this embodiment is a common intermittent transmission fit, and therefore will not be described in detail.

[0087] For details of the above plan, please refer to [reference needed]. Figure 2-4 The intermittent transmission mechanism D55 also includes a protective shell D555. Inside the protective shell D555 are three limiting shafts D5551. The limiting shafts D5551 are fixed in position and are arranged parallel to the rope-laying synchronous shaft D53. The second intermittent transmission body D554 is rotatably mounted on the limiting shafts D5551. Specifically, each of the three limiting shafts D5551 is equipped with a second intermittent transmission body D554; that is, three second intermittent transmission bodies D554 are provided around the periphery of one first intermittent transmission body D553, making the force on the first intermittent transmission body D553 more stable.

[0088] Specifically, to avoid excessive friction between the slide D2 and the rope 300, which could lead to wear on the rope 300, the above solution refers to... Figure 1 and Figure 4 The slide D2 includes two opposing rope-guiding pulleys D22 for clamping the rope 300. The outer circumferential surface of each rope-guiding pulley D22 has a hub for engaging the rope 300. A movable rope guide frame D21 is provided on the slide D2, and the rope-guiding pulleys D22 are rotatably mounted on the rope guide frame D21. Thus, the rope 300 is cushioned on the slide D2, minimizing friction even during winding and movement, thereby extending the rope 300's service life.

[0089] In summary, this invention provides a rope-laying device D0 to prevent tooth jamming. This device D0 uses a buffer mechanism D56 between the rope-laying synchronous shaft D53 and the reversing sun gear D54. The buffer mechanism D56 allows the rope-laying synchronous shaft D53 and the reversing sun gear D54 to rotate relative to each other by a certain amount. When the steering drive gear D51 encounters resistance from the first steering gear D31 or the second steering gear D41 during engagement, the steering drive gear D51 can rotate with the reversing sun gear D54 by a certain amount, allowing the teeth on the steering drive gear D51 to smoothly mesh with the teeth on the first steering gear D31 / second steering gear D41, thus preventing tooth jamming.

[0090] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A rope-laying device for preventing tooth jamming, comprising: The screw has a one-way threaded groove and is arranged parallel to the rope winding shaft; A slide table, through which a rope on a rope shaft passes, the slide table being threadedly connected to the screw, the slide table being axially movable but circumferentially fixed on the screw; The first transmission path is composed of an odd number of gears connected in sequence, with one end of the gear being connected to the screw and the other end of the gear being defined as the first steering gear. The second transmission path is composed of a plurality of gears connected in sequence, with one end of the gear being connected to the screw and the other end of the gear being defined as the second steering gear. A steering drive mechanism includes a steering drive gear capable of switching between the first steering gear and the second steering gear to drive one of them; The steering drive gear rotates synchronously with the rope winding shaft; The characteristic feature is that the reversing drive mechanism further includes: A planetary carrier with a reversing direction, wherein a plurality of steering drive gears are provided on the planetary carrier, and the steering drive gears serve as planetary gears on the planetary carrier. A rope-laying synchronous shaft rotates synchronously with the rope-winding shaft, and a reversing sun gear is fitted on it. The reversing sun gear meshes with the steering drive gear. An intermittent transmission mechanism is used to realize intermittent transmission between the rope-laying synchronous shaft and the reversing planetary carrier; A buffer mechanism is provided between the rope-laying synchronous shaft and the reversing sun gear. The buffer mechanism includes at least one transmission groove recessed in the inner wall of the reversing sun gear, at least one transmission block protruding in the outer wall of the rope-laying synchronous shaft, and an elastic buffer member. The transmission block is disposed in the transmission groove. In the initial state, a buffer space is formed between the two side walls of the transmission block in the circumferential direction and the two side walls of the transmission groove in the circumferential direction. The elastic buffer is used to apply an elastic preload to the reversing sun gear to restore the transmission block to its initial position; The inner bore of the reversing sun gear includes, along the axial direction, a transmission section and a buffer section in sequence. The transmission groove is disposed within the transmission hole section; The inner wall of the buffer hole section is recessed to form a buffer guide groove, which includes two guide slopes; the edges of the two guide slopes that are far apart from each other intersect with the inner wall of the buffer hole section, and the edges of the two guide slopes that are close to each other intersect to form an abutment recess. The rope-laying synchronous shaft is provided with mounting holes that are opened radially. The elastic buffer includes a top ball slidably disposed in the mounting hole and an elastic element for driving the top ball away from the axis of the rope synchronizing shaft, wherein the top ball rolls against the guide slope of the buffer guide groove. In the initial state, the top bead is located at the abutment recess of the buffer guide groove.

2. The rope-laying device for preventing tooth jamming according to claim 1, characterized in that: Two of each of the transmission groove, transmission block, and buffer guide groove are provided. The elastic buffer also includes a limiting cylinder, which is fixedly installed in the assembly hole of the rope synchronous shaft. The limiting cylinder is hollow inside and has openings at both ends. There are two top beads installed inside the limiting cylinder. The diameter of the openings at both ends of the limiting cylinder is smaller than the diameter of the top beads. The elastic element is a spring installed between the two top beads.

3. The rope-laying device for preventing tooth jamming according to claim 2, characterized in that: The two guide ramps within the buffer guide groove are symmetrically arranged.

4. The rope-laying device for preventing tooth jamming according to any one of claims 1-3, characterized in that: The intermittent transmission mechanism includes: An intermittent output component, wherein the intermittent output component is coaxially arranged and relatively fixed with the planetary carrier and the rope synchronous shaft; An initial output gear is fixedly sleeved on the rope-laying synchronous shaft. At least one first intermittent transmission body, the first intermittent transmission body being rotatably sleeved on the rope-laying synchronous shaft, one end of the first intermittent transmission body having a first gear meshing part, and the other end having an intermittent driven part; At least one second intermittent transmission body is provided outside the first intermittent transmission body. One end of the second intermittent transmission body is formed with a second gear meshing part, and the other end is formed with an intermittent driving part. Wherein, the second gear meshing part meshes with the first gear meshing part or the initial output gear; the intermittent drive part forms a Geneva transmission engagement with the intermittent driven part or the intermittent output member.

5. The rope-laying device for preventing tooth jamming according to claim 4, characterized in that: The intermittent transmission mechanism also includes a protective shell, inside which are provided three limiting shafts. The limiting shafts are fixed in position and are arranged parallel to the rope-laying synchronous shaft. The second intermittent transmission body is rotatably mounted on the limiting shafts.

6. The rope-laying device for preventing tooth jamming according to claim 4, characterized in that: The intermittent drive unit is a dial equipped with a cylindrical pin, the intermittent driven unit is a grooved wheel structure, and the intermittent output unit is provided with a grooved wheel structure.

7. The rope-laying device for preventing tooth jamming according to claim 1, characterized in that: The angle between two adjacent steering drive gears and the central axis of the planetary carrier is the first angle, and the angle between the first steering gear, the second steering gear and the central axis of the planetary carrier is the second angle. The first angle is twice the second angle. The rope synchronizing shaft rotates at the same speed as the screw.

8. The rope-laying device for preventing tooth jamming according to claim 1, characterized in that: The slide includes two oppositely arranged rope-laying pulleys for clamping ropes, and the outer circumferential surface of the rope-laying pulleys has a hub portion for engaging the rope.

9. The rope-laying device for preventing tooth jamming according to claim 8, characterized in that: A movable rope guide frame is provided on the slide, and the rope pulley is rotatably mounted on the rope guide frame.

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