A hoisting device for track transportation of mine locomotives

Abstract

The present invention discloses a mine electric locomotive rail transportation hoisting device, which involves the field of hoisting technology, including: a running wheel, which is assembled on the electric locomotive and the hoisting suspension beam; a hoisting suspension beam, a main drum installed on the hoisting suspension beam is provided with a suspension steel rope, the suspension steel rope passes through a pulley and a suspension wheel and is wound on the main drum, and a hook extension assembly is movably connected to the suspension wheel; the hook extension assembly includes a hook frame, and a limiter is provided on the hook frame to prevent the hook member from shaking. When the object to be hoisted is staggered with the hook, the hook is pulled to hook at the hoisting point, and the object to be hoisted in the staggered position can be hoisted without lengthening the hook extension assembly or moving the object to be hoisted. The hook sleeve contacts with a plurality of counterweight rods, and the counterweight rods drive the connecting rod and the limit plate to rotate in the opposite direction until the plurality of limit plates are against the outer peripheral surface of the hook sleeve, at which time the main drum stops working, shortening the swinging time of the hook sleeve in the through hole.

Description

Technical Field

[0001] The present invention relates to the technical field of lifting, and particularly relates to a hoisting device for track transportation of mine locomotives. Background Art

[0002] With the development of the coal industry, most of the transportation work of underground equipment, materials, etc. is carried out by using a mine trolley locomotive to tow a mine car through a track. Only for the effect of clamping and fixing the hook during transportation, the clamping and limiting effect on the cable above the hook is not good. When the crane is hoisting, due to reasons such as the deviation of the lifting point position of the object being lifted from the hook or the inertia generated during the start and stop of the crane, the object being lifted will shake. At the same time, it is necessary to wait for the object being lifted to stop shaking before it can be lowered, which further affects the working time and efficiency. Currently, when using multiple pulleys to limit the steel rope to limit the shaking of the lifted object, then due to its anti-shaking characteristics, when the connected hook is misaligned with the lifting point position, it is necessary to move the entire lifted object or lower the hook excessively so that the steel rope is in a relaxed state before hooking the hook on the lifting point. And it is difficult to push when the weight of the object being lifted exceeds dozens of kilograms. Similarly, when the steel rope is in a relaxed state, it is easy to disengage from the pulley. Summary of the Invention

[0003] The purpose of the present invention is to provide a hoisting device for track transportation of mine locomotives, which has the advantages that it does not need to extend the hook extension assembly, nor does it need to move the object being lifted, and can lift the object being lifted with a misaligned position, and the steel rope is always in a taut state and will not disengage from the pulley. When the hook sleeve rises and contacts multiple counterweight rods, multiple limiting plates all abut against the outer peripheral surface of the hook sleeve, having the advantage of shortening the swinging time of the hook sleeve in the through hole.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A hoisting device for track transportation of mine locomotives, comprising:

[0005] Travel wheels, which are assembled on the mine locomotive and the hoisting suspension beam;

[0006] Tracks, which are installed on the top of the mine. The mine locomotive and the hoisting suspension beam move along the tracks through the travel wheels;

[0007] Hoisting suspension beam, on which a main drum is installed and a suspension steel rope is provided. At the bottom of the hoisting suspension beam, a pulley is provided. The suspension steel rope passes through the pulley and the suspension wheel and is wound around the main drum. A hook extension assembly is movably connected to the suspension wheel;

[0008] The hook extension assembly includes an auxiliary drum, a hook steel rope, a hook bracket, and a hook member. Both ends of the auxiliary drum are connected to the suspension wheel. The hook bracket is penetrated by the auxiliary drum and rotates around the auxiliary drum. One end of the hook steel rope is wound and fixed on the auxiliary drum, and the other end of the hook steel rope is connected to the hook member; A limiting portion for preventing the hook member from shaking is provided on the hook bracket.

[0009] Further, a block is installed inside the hook frame, and a through hole for inserting the hook steel rope and the hook member is provided inside the block.

[0010] Further, the top of the hook sleeve included in the hook member is fixed to the hook steel rope, and the hook sleeve is threadedly connected to the rod body of the hook.

[0011] Further, wheel covers are symmetrically and fixedly arranged on the outer walls on both sides of the hook frame, the suspension wheel is placed inside the wheel cover, an arc-shaped groove is provided at the top of the wheel cover, and the suspension steel rope passes through the arc-shaped groove and is wound around the suspension wheel.

[0012] Further, the suspension steel rope passes through the suspension wheels and pulleys on one side and the suspension wheels on the other side in sequence and is fixed to the main drum. The suspension wheels and pulleys on both sides play a role in limiting the suspension steel rope to prevent the suspension steel rope from shaking during the suspension process.

[0013] Further, the limiting part includes a limiting ring, a limiting plate, a counterweight rod and a connecting rod. The limiting ring is assembled inside the hook frame, the connecting rod rotates around the limiting ring, and both ends of the connecting rod are hinged to the counterweight rod and the limiting plate respectively.

[0014] Further, the connecting rod is composed of a straight arm part and a bent part. The cylinder body connected to the bent part rotates sleeved on the limiting ring. The counterweight rod is horizontally arranged and the weight of the counterweight rod exceeds the weights of the straight arm part and the limiting plate.

[0015] Further, the limiting ring included in the limiting part is assembled inside the hook frame. A plurality of rotatable abutting plates are sleeved on the limiting ring, and dampers hinged to the bottom edges of the abutting plates are fixed to the inner wall of the through hole;

[0016] A rotating sleeve is arranged and rotates in the through hole above the limiting ring. A screw rod is meshed with the rotating sleeve. The screw rod moves up and down for the rotating sleeve to rotate. A reinforcing steel cable is wound around the outer wall of the screw rod above the rotating sleeve. The other end of the reinforcing steel cable passes through the arc-shaped groove at the bottom end of the abutting plate and is fixed to the abutting plate.

[0017] Further, a plurality of the abutting plates are provided, and the plurality of abutting plates rotate around the limiting ring under the pulling of the reinforcing steel cable to form an unfolded or contracted state. The abutting plates form a cylinder member that abuts against the hook sleeve in the contracted state.

[0018] Further, a reset plate connected to the top of the screw rod is connected to the limiting ring through a spring.

[0019] The technical effects and advantages of the present invention:

[0020] 1. When the main drum rotates forward and the suspension steel rope is extended, the hook steel rope is extended synchronously. When the suspended object is staggered with the hook, the hook is pulled to hook at the lifting point. Without extending the hook extension component and without moving the suspended object, the suspended object at the staggered position can be lifted, and the steel rope is always in a taut state and will not disengage from the pulley.

[0021] 2. During the upward movement and swinging of the hook sleeve, the hook sleeve is inserted into the through hole, the hook sleeve contacts multiple counterweight rods, the counterweight rods drive the connecting rod and the limiting plate to rotate in the reverse direction, the limiting plate and the hook sleeve swing in opposite directions, and the limiting plate restricts the swinging amplitude of the hook sleeve until multiple limiting plates all abut against the outer peripheral surface of the hook sleeve. At this time, the main drum stops working, shortening the swinging time of the hook sleeve in the through hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is the overall top view structure diagram of the present invention;

[0023] Figure 2 is the overall bottom view structure diagram of the present invention;

[0024] Figure 3 is the lifting suspension beam structure diagram of the present invention;

[0025] Figure 4 is the hook extension component structure diagram of the present invention;

[0026] Figure 5 is the hook member separation diagram of the present invention;

[0027] Figure 6 is the state diagram of the limiting part not clamping the hook sleeve of the present invention;

[0028] Figure 7 is the limiting part structure diagram of the present invention;

[0029] Figure 8 is the structure diagram of another embodiment of the limiting part of the present invention;

[0030] Figure 9 is the partial decomposition diagram of the limiting part of the present invention.

[0031] In the figure:

[0032] 1, traveling wheel; 2, track; 3, lifting suspension beam; 31, main drum; 32, suspension steel rope; 33, pulley; 34, suspension wheel; 4, hook extension component; 41, auxiliary drum; 42, hook steel rope; 43, hook bracket; 431, block; 432, wheel cover; 45, hook member; 451, hook sleeve; 452, hook; 5, limiting part; 51, limiting ring; 511, abutting plate; 52, limiting plate; 53, counterweight rod; 54, connecting rod; 541, straight arm part; 542, bent part; 55, screw rod; 56, rotating sleeve; 57, strengthening steel cable; 58, damper; 6, battery locomotive. Detailed implementation manners

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. In the description of the present invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0034] In the description of the present invention, the meaning of "several" is one or more, the meaning of "multiple" is two or more, and understandings such as "greater than", "less than", "exceeding", etc. do not include the recited number, and understandings such as "above", "below", "within", etc. include the recited number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0035] 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 indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0036] In order to better understand a hoisting device for mine electric locomotive track transportation provided in this embodiment, when the hoist is hoisting, due to reasons such as the deviation between the hoisting point position of the object to be hoisted and the hook or the inertia generated during the start and stop of the hoist, the object to be hoisted will shake. The specification aims to solve the above technical problems, and the embodiments of the present application provide a hoisting device for mine electric locomotive track transportation.

[0037] Embodiment 1: Refer to Figure 1 , which is the first embodiment of the present invention, and provides a hoisting device for mine electric locomotive track transportation, including:

[0038] Travel wheels 1, the travel wheels 1 are assembled on the electric locomotive 6 and the hoisting suspension beam 3. The travel wheels 1 are connected to the motor on the electric locomotive 6, and the power of the motor is controlled by the electric locomotive 6. By driving the motor and the travel wheels 1 to work through the electric locomotive 6, the travel wheels 1 can rotate and move forward or backward along the track 2;

[0039] Track 2 is installed at the top of the mine shaft. The electric locomotive 6 and the lifting suspension beam 3 move along track 2 through the traveling wheels 1. Track 2 adopts a single-track structure to adapt to the narrow passage in the mine. The electric locomotive 6 of this device can be a trolley locomotive or a battery locomotive, which is set according to requirements.

[0040] Refer to Figures 2 - 4 , the lifting suspension beam 3. A main drum 31 installed on the lifting suspension beam 3 is provided with a suspension steel rope 32. A pulley 33 is provided at the bottom of the lifting suspension beam 3. The suspension steel rope 32 passes through the pulley 33 and the suspension wheel 34 and is wound around the main drum 31. A hook extension assembly 4 is movably connected to the suspension wheel 34.

[0041] Specifically, the length and width of the lifting suspension beam 3 are set according to the size of the mine. A speed reducer and a driving motor connected to the main drum 31 are provided on the lifting suspension beam 3. The motor is controlled by the electric locomotive 6. The motor transmits power to the speed reducer and then drives the main drum 31 to rotate forward and backward to wind up or release the suspension steel rope 32, and pulls the hook extension assembly 4 to rise or fall through the suspension steel rope 32.

[0042] Refer to Figures 4 - 5 , a block 431 is installed inside the hook bracket 43. A through hole for inserting the hook steel rope 42 and the hook member 45 is opened inside the block 431.

[0043] The top of the hook sleeve 451 included in the hook member 45 is fixed to the hook steel rope 42. The hook sleeve 451 is threadedly connected to the rod body of the hook 452. The hook sleeve 451 and the hook 452 can be conveniently replaced through the thread.

[0044] Wheel covers 432 are symmetrically and fixedly arranged on the outer walls on both sides of the hook bracket 43. The suspension wheel 34 is placed inside the wheel covers 432. An arc groove is provided at the top of the wheel covers 432. The suspension steel rope 32 passes through the arc groove and is wound around the suspension wheel 34.

[0045] The suspension steel rope 32 passes through the suspension wheel 34 on one side, the pulley 33 and the suspension wheel 34 on the other side in sequence and is fixed to the main drum 31. The suspension wheels 34 and the pulley 33 on both sides play a limiting role on the suspension steel rope 32 to prevent the suspension steel rope 32 from shaking during the suspension process.

[0046] However, due to the structural settings of the suspension wheel 34 and the pulley 33, although the suspension steel rope 32 solves the problem of shaking, due to its anti-shaking setting, the directly connected hook 452 moves up and down along the vertical direction. If the hanging point of the object to be lifted is offset from the position of the hook 452, it is necessary to move the object to be lifted to align the hanging point and the hook 452, or continue to lengthen the suspension steel rope 32 so that the hook extension assembly 4 is entirely below the horizontal position of the hanging point, and then the suspension steel rope 32 is in a non-tight state and the hook 452 can be driven to hook on the hanging point by moving the hook extension assembly 4.

[0047] The hook extension component 4 provided to solve the above problems can not only solve the swaying of the lifted object, but also when the lifting point of the lifted object is offset from the hook 452, it is not necessary to lengthen the suspension steel rope 32 or move the lifted object.

[0048] The hook extension component 4 includes a secondary drum 41, a hook steel rope 42, a hook frame 43 and a hook member 45. Both ends of the secondary drum 41 are connected to the suspension pulley 34. The hook frame 43 is penetrated by the secondary drum 41 and rotates around the secondary drum 41. One end of the hook steel rope 42 is wound and fixed on the secondary drum 41, and the other end of the hook steel rope 42 is connected to the hook member 45; a limiting portion 5 for preventing the hook member 45 from swaying is provided on the hook frame 43.

[0049] The secondary drum 41 and the suspension pulley 34 rotate synchronously, and the hook frame 43 can rotate around the secondary drum 41. Then, during the process of lengthening or shortening the suspension steel rope 32, the suspension pulley 34 and the secondary drum 41 can be driven to rotate forward or reverse synchronously. When the suspension steel rope 32 is lengthened, the main drum 31 rotates forward and the secondary drum 41 also rotates forward. At this time, the main drum 31 rotates and simultaneously lengthens the hook steel rope 42, so that the hook 452 can be disengaged from the hook member 45.

[0050] Through the above structure, when the main drum 31 rotates forward and the suspension steel rope 32 is lengthened, the hook steel rope 42 is also lengthened synchronously, and the hook steel rope 42 and the hook 452 can move in any direction. Through the above structure, when the lifted object is offset from the hook 452, the hook 452 can be pulled to hook at the lifting point, without lengthening the hook extension component 4 or moving the lifted object, and at the same time, the suspension steel rope 32 is always in a taut state and will not disengage from the pulley 33.

[0051] As the suspension steel rope 32 shortens to drive the hook extension component 4 to rise, the hook steel rope 42 also rotates around the secondary drum 41 and shortens in length synchronously, and the hook 452 also rises synchronously until the hook 452 and the hook sleeve 451 are inserted into the through hole of the hook member 45. The hook member 45 restricts the hook 452 and the hook sleeve 451, and when the crane moves and starts or stops, the hook member 45 reduces the swaying amplitude of the hook 452, avoiding the situation that in the existing lifting of an object, when the crane is in a stopped state, in order to reduce the swing, it is necessary to extend the braking time to weaken the influence of inertia on the lifted object, and at the same time, it is necessary to wait until the swaying amplitude weakens before the lifted object can be lowered.

[0052] Embodiment 2: Refer to Figures 6 - 7, which is the second embodiment of the present invention. This embodiment is different from the first embodiment. Since the lifting points of the lifted object are offset from the hook 452, the lifted object will swing when the hook 452 lifts the lifted object. When the lifted object swings, it is difficult to insert it into the through hole of the hook member 45. It is necessary to wait until the swinging amplitude of the lifted object is small before inserting the hook 452 and the hook sleeve 451 into the through hole of the hook member 45. To solve the above problems, the limiting portion 5 is provided to limit the hook 452 and the hook sleeve 451, so as to reduce the waiting time.

[0053] The limiting portion 5 includes a limiting ring 51, a limiting plate 52, a counterweight rod 53 and a connecting rod 54. The limiting ring 51 is assembled in the hook bracket 43, and the connecting rod 54 rotates around the limiting ring 51. The two ends of the connecting rod 54 are respectively hinged to the counterweight rod 53 and the limiting plate 52.

[0054] The connecting rod 54 is composed of a straight arm portion 541 and a bent portion 542. The cylinder body connected to the bent portion 542 rotates on the limiting ring 51. The counterweight rod 53 is horizontally arranged and the weight of the counterweight rod 53 exceeds the weights of the straight arm portion 541 and the limiting plate 52.

[0055] The limiting ring 51 provides support for the connecting rod 54, allowing the connecting rod 54 to rotate around the limiting ring 51. Since the gravity of the counterweight rod 53 exceeds that of the straight arm portion 541 and the limiting plate 52, during the upward movement and swinging of the hook sleeve 451, the hook sleeve 451 contacts multiple counterweight rods 53. Since the hook sleeve 451 will swing, when the hook sleeve 451 swings to one side, the hook sleeve 451 will abut against the counterweight rod 53, and the counterweight rod 53 will drive the connecting rod 54 and the limiting plate 52 to rotate in the opposite direction. The swinging directions of the limiting plate 52 and the hook sleeve 451 are opposite. The limiting plate 52 limits the swinging amplitude of the hook sleeve 451. When the hook sleeve 451 swings in a certain direction, the limiting amplitude of the limiting plate 52 in that direction is larger, thereby continuously limiting the swinging of the hook sleeve 451 until multiple limiting plates 52 all abut against the outer peripheral surface of the hook sleeve 451. At this time, the main drum 31 stops working. The provided limiting plate 52 stops the swinging of the hook sleeve 451 and the hook 452, shortening the swinging time of the hook sleeve 451 in the through hole.

[0056] When the main drum 31 rotates in the reverse direction, the suspension steel rope 32 and the hook steel rope 42 extend synchronously. Under the action of gravity, the hook sleeve 451 and the counterweight rod 53 are separated, and the counterweight rod 53 also slowly moves downward with the hook sleeve 451, and the limiting plate 52 unfolds and separates from the hook sleeve 451 to allow the lifted object to fall in the vertical direction.

[0057] Embodiment Three: Refer to Figures 8 - 9 , which is the third embodiment of the present invention. The limiting portion 5 of this embodiment is different from that of Embodiment Two, and the rest of the structure is the same as that of Embodiment One. The limiting ring 51 included in the limiting portion 5 is assembled in the hook bracket 43. A number of rotatable abutting plates 511 are sleeved on the limiting ring 51, and a damper 58 hinged to the bottom edge of the abutting plate 511 is fixed to the inner wall of the through hole;

[0058] The rotating sleeve 56 is arranged and rotates in the through hole above the limit ring 51. The screw rod 55 meshes with the rotating sleeve 56. The up and down movement of the screw rod 55 is used for the rotation of the rotating sleeve 56. The reinforcing steel cable 57 is wound around the outer wall of the screw rod 55 above the rotating sleeve 56. The other end of the reinforcing steel cable 57 passes through the arc groove at the bottom end of the abutting plate 511 and is fixed on the abutting plate 511.

[0059] A plurality of abutting plates 511 are provided. Under the pulling of the reinforcing steel cable 57, the plurality of abutting plates 511 rotate around the limit ring 51 to form an unfolded or contracted state. The abutting plates 511 form a cylindrical member that abuts against the hook sleeve 451 in the contracted state. The reset plate connected to the top of the screw rod 55 is connected to the limit ring 51 through a spring.

[0060] The rotating sleeve 56 can rotate around the limit ring 51, and the overall position of the rotating sleeve 56 remains unchanged. When the hook sleeve 451 moves upward and abuts against the screw rod 55 to push the screw rod 55 upward, during the upward movement of the screw rod 55, the screw rod 55 pushes the rotating sleeve 56 to rotate. At the same time, the reset plate is also pushed upward by the screw rod 55, and the spring is stretched. After the rotating sleeve 56 rotates, it winds up the reinforcing steel cable 57. Thus, when the reinforcing steel cable 57 is wound up, it pulls the bottom ends of the plurality of abutting plates 511 to contract. When the abutting plates 511 contract, the damper 58 is slowly stretched to maintain the uniformity of the contraction of the abutting plates 511. At the same time, the damper 58 can also provide support for the end corners of the abutting plates 511. At the same time, the reinforcing steel cable 57 can also provide a supporting force for the plurality of abutting plates 511 to resist the impact force generated by the swing of the hook sleeve 451 until the abutting plates 511 contract to abut against the hook sleeve 451 to ensure the clamping force on the hook sleeve 451, shorten the swing time of the hook sleeve 451 in the through hole. At the same time, the arranged circle of reinforcing steel cable 57 can also limit the hanging hook steel rope 42 to prevent the hanging hook steel rope 42 from moving to the back of the abutting plate 511 during the swing process.

[0061] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A mine electric locomotive rail transport hoisting device, characterized in that: include: A running wheel (1), wherein the running wheel (1) is mounted on an electric locomotive (6) and a lifting beam (3); A track (2), the track (2) being installed at the top of the mine, and the electric locomotive (6) and the lifting beam (3) moving along the track (2) via the running wheels (1); A lifting suspension beam (3), wherein a main drum (31) installed on the lifting suspension beam (3) is provided with a suspension steel rope (32), a pulley (33) is provided on the bottom of the lifting suspension beam (3), the suspension steel rope (32) passes through the pulley (33) and the suspension wheel (34) and is wound on the main drum (31), and a hook extension component (4) is movably connected to the suspension wheel (34); The hook extension assembly (4) comprises an auxiliary drum (41), a hook steel rope (42), a hook frame (43) and a hook member (45); both ends of the auxiliary drum (41) are connected to the suspension wheel (34); the hook frame (43) is penetrated by the auxiliary drum (41) and rotates around the auxiliary drum (41); one end of the hook steel rope (42) is wound around the auxiliary drum (41) and fixed; the other end of the hook steel rope (42) is connected to the hook member (45); the hook frame (43) is provided with a limiting portion (5) for preventing the hook member (45) from shaking; The limiting part (5) comprises a limiting ring (51), a limiting plate (52), a counterweight rod (53) and a connecting rod (54); the limiting ring (51) is assembled in the hook frame (43); the connecting rod (54) rotates around the limiting ring (51); and two ends of the connecting rod (54) are respectively hinged to the counterweight rod (53) and the limiting plate (52); The connecting rod (54) is composed of a straight arm portion (541) and a curved portion (542); a cylinder connected to the curved portion (542) is sleeved on a limiting ring (51) for rotation; a counterweight rod (53) is arranged horizontally and the weight of the counterweight rod (53) exceeds the weight of the straight arm portion (541) and the limiting plate (52).

2. A mine electric locomotive rail transport hoisting device according to claim 1, characterized in that: A block body (431) is installed in the hook frame (43), and a through hole is provided inside the block body (431) for inserting the hook steel rope (42) and the hook member (45).

3. A mine electric locomotive rail transport hoisting device according to claim 1, characterized in that: The hook member (45) comprises a hook sleeve (451) whose top is fixed to the hook steel rope (42), and the hook sleeve (451) is threadedly connected to the rod body of the hook (452).

4. A mine electric locomotive rail transport hoisting device according to claim 1, characterized in that: Wheel covers (432) are symmetrically fixed on the outer walls of both sides of the hook frame (43), and the suspension wheel (34) is placed in the wheel cover (432). The top of the wheel cover (432) is provided with an arc groove, and the suspension steel rope (32) passes through the arc groove and is wound around the suspension wheel (34).

5. The mine electric locomotive rail transport hoisting device according to claim 1, characterized in that: The hook steel rope (42) is fixed on the main drum (31) by sequentially passing through the suspension wheel (34) and the pulley (33) on one side and the suspension wheel (34) on the other side. The suspension wheels (34) and the pulley (33) on both sides play a limiting role on the suspension steel rope (32) to prevent the suspension steel rope (32) from shaking during the suspension process.

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