A rope guiding mechanism capable of driving ropes of various diameters and a working method

Abstract

The application relates to a kind of climbing rope guiding mechanisms and working methods of various rope diameters that can be driven, which have small friction coefficient, do not interfere with each other when entering and exiting the rope, are not twisted, knotted, can balance the climbing rope and are safe and reliable, comprising a driving wheel with a V-shaped groove, a rope pressing swing block and a shell, a left rope guide wheel is arranged on the upper left side of the single-rope driving wheel of the V-shaped groove, a right rope guide wheel is arranged on the upper right side, a partition plate capable of rotating around an axis is arranged between the left rope guide wheel and the right rope guide wheel, a rope blocking plate is arranged in front of the two rope guide wheels, one end of the rope blocking plate is rotatable around the rotating shaft of the right rope guide wheel, and the other end of the rope blocking plate is clamped to the rotating shaft of the left rope guide wheel; the rope pressing swing block is installed below the right rope guide wheel on the right side of the driving wheel, the upper end of the rope pressing swing block is connected to the shell by a rotating shaft, the rotating shaft is provided with a torsional spring, one end of the torsional spring is fixed to the shell, the other end of the torsional spring is fixed to the rope pressing swing block, and the elastic force direction of the torsional spring forces the rollers on the concave arc surface of the rope pressing swing block to roll and press on the rope.

Description

Technical Field

[0001] This invention relates to a rope climbing guide mechanism and its working method that can drive multiple rope diameters, with a low coefficient of friction, prevents mutual interference, twisting, and knotting when ropes enter and exit, balances rope climbing, and is safe and reliable. It belongs to the field of rope climbing device manufacturing. Background Technology

[0002] The applicant's patent CN202220209325, entitled "Portable Powered Rope Climber," includes a portable powered rope climber. In this portable powered rope climber, the output shaft of a worm gear reducer located on the back of the housing passes through a shaft hole in the housing and drives a drive wheel located on the front of the housing to rotate forward or backward. The worm gear reducer is driven by a motor, which is powered by a battery via a control board. A rope scraper is located above the drive wheel, with an inlet rope wheel and an outlet rope wheel positioned opposite each other on either side above the scraper. One end of a rope-blocking plate is connected to the shaft of either the outlet or inlet rope wheel, and the other end of the rope-blocking plate is engaged with the shaft of either the inlet or outlet rope wheel and locked in place by an elastic stop block. The upper end of a rope-pressing swing block is hinged to the outlet rope wheel below via a torsion spring, and the rope-pressing surface of the swing block elastically rolls the rope under the action of the torsion spring. A handle is located below the drive wheel, with a speed adjustment knob and an emergency stop button on each side above the handle, and a forward / reverse stop switch button on each side below the handle. A gravity hook frame is located on the housing below the handle. The problems to be solved are: 1) There is no bearing between the guide rope wheel and the shaft, resulting in high friction between the rope and the guide rope wheel and shaft; 2) The rope stop plate and the guide rope wheel shaft are locked together by a spring stop block. Because the spring stop block must take into account the opening and closing needs, the locking force cannot be set too high. In actual use, it was found that when the rope can also drive the rope stop block to open, there is a safety hazard; 3) The inlet and outlet ropes often interfere with each other because they move in opposite directions. If the outlet rope is twisted due to being driven by the inlet rope, it will cause the rope to separate from the drive wheel or the rope to get knotted, with very serious consequences; 4) There is only one auxiliary lug. When lateral movement is required, it was found that the rope climber cannot be balanced; 5) The drive wheel is exposed, which is not conducive to the operator's safety. Summary of the Invention

[0003] Design objectives: To overcome the shortcomings of the prior art, this design aims to: 1) reduce friction in the inlet and outlet ropes; 2) provide a rope guard plate that facilitates rope installation and ensures secure locking to prevent rope guide failure; 3) separate the inlet and outlet ropes to prevent tangling; 4) provide auxiliary lugs to maintain balance; and 5) add a device to prevent moving parts from posing a hazard to the operator.

[0004] Design Scheme: To achieve the above design objectives, the present invention features the following structural design: 1. There is a guide wheel on each of the left and right sides above the drive wheel. Bearings are installed between these two guide wheels and the rotating shaft. The outer surface has an arc-shaped groove, which, together with the rope separator plate, forms two cavities that allow ropes to pass through. The ropes and guide wheels can form a rolling engagement, which is one of the overall technical solutions of the present invention. The purpose of this design is that the rolling engagement reduces the resistance of the rope when it passes through, especially when the ropes are pulled to both sides. The rolling engagement between the ropes and the guide wheels helps to reduce friction. The rope separator plate separates the left and right ropes through the cavities, preventing interference or knotting between the ropes passing through the cavities. This ensures that no adverse consequences will occur due to interference, twisting, or knotting between the left and right ropes under any circumstances. 2. The two pivot plates in the rope-blocking plate have holes that can be fitted onto the pivot of the right guide rope wheel or the pivot of the left guide rope wheel to form a rotatable fit. The two pivot plates in the rope-blocking plate have concave arc-shaped grooves. These concave arc-shaped grooves form a locking or opening fit with the pivot of the left guide rope wheel or the right guide rope wheel. This is the second technical feature of the present invention. The purpose of this design is that, since the present invention has a groove structure on the inner side of the outer shell, this groove structure can not only enhance the strength of the outer shell, but also form a cavity when stacked with the two pivot plates. The present invention has a lever in the cavity. Under the push of the spring, the lever forms an openable and closable lock with the opening groove of the two pivot plates and locks onto the pivot of the left guide rope wheel. In this way, under the action of the spring, the lever forms a closed lock with the groove. At this point, the two shaft spacers act as secondary positioning plates to define the distance between the two shafts, preventing slight deformation of the left and right guide wheel shafts under force. This creates a stable dynamic fit, preventing the shafts from tilting to either side when the rope is pulled to the sides. Simultaneously, the rope-blocking plate blocks the opening between the left and right guide wheels, preventing the rope from slipping out. Moving the lever, which is connected to the pull block, opens one side of the opening slot (concave arc-shaped slot) on the two shaft spacers, releasing the shaft on that side. The rotational fit between the two shaft spacers in the rope-blocking plate and the right guide wheel shaft causes the spacers to rotate, opening the opening between the two guide wheels for easy rope installation or removal. 3. A partition between the two guide wheels, with a rotatable and flip-up upper end, is the third technical feature of this invention. The purpose of this design is that the partition is an important component that allows the rope to run along a prescribed path. Since the directions of the incoming and outgoing ropes are opposite, a partition is installed between the incoming and outgoing ropes to prevent interference. At the same time, when the partition is flipped up, the gap between the guide rope pulleys can be increased, making it easier for the rope to enter the guide rope pulleys when loading the rope. 4. An auxiliary hanging lug is provided on each of the left and right sides at the upper end of the front panel of the machine housing, which is the fourth technical feature of this invention.The purpose of this design is threefold: First, when the device moves laterally, a load-bearing rope is installed on each auxiliary lug. This load-bearing rope can be attached to the main rope via rollers, thus the power rope is unaffected by the load. Second, when lifting loads exceeding the rated load, auxiliary pulleys (or pulley blocks) can be used to reduce the load to within the power rope's tolerance range. The auxiliary lugs can be used to secure the power rope or pulley blocks. Third, it balances the rope climber during lateral movement. 5. The design of a protective cover around the drive wheel is the fifth technical feature of this invention. The purpose of this design is that the protective cover has a pivot that allows it to be opened downwards and closed upwards via a rope-blocking plate, preventing accidental opening. Therefore, when the drive wheel is working, the protective cover completely encloses the moving parts, providing safety protection for the operator. When installing the rope, the rope-blocking plate is unlocked, and when the pivot is opened, the protective cover is also unlocked, allowing the drive wheel to be opened and the rope to be installed conveniently. 6. The design of having two or more rollers (with an uneven, rough surface) on the concave arc-shaped surface of the rope-pressing swing block, and the rope-pressing swing block being supported by a torsion spring, is the sixth technical feature of this invention. The purpose of this design is that when the roller surface is uneven and rough, the rough surface reduces the coefficient of friction between the roller and the rope. Changes in the rope diameter within the V-groove affect the swing angle of the rope-pressing swing block. The design of multiple rollers ensures that some rollers will always press against the rope. The elastic force provided by the torsion spring causes the concave arc surface of the rope-pressing swing block to tend to press against the drive wheel, allowing the protruding rollers to extend into the V-groove of the drive wheel, pressing down on the rope within the V-groove. This prevents the rope from detaching from the V-groove, reduces wear on the rope surface, and effectively compacts the rope.

[0005] Technical solution: A rope climbing guide mechanism capable of driving multiple rope diameters includes a drive wheel with a V-groove, a rope pressing block, and a housing. Above the single rope drive wheel with the V-groove, there is a left guide wheel on the upper left and a right guide wheel on the upper right. Between the left and right guide wheels is a partition plate that can rotate around an axis. Directly in front of the two guide wheels is a two-axis spacer plate. One end of the spacer plate is rotatable around the axis of the right guide wheel, and the other end is engaged with the axis of the left guide wheel. A rope pressing block is installed below the right guide wheel on the right side of the drive wheel. The upper end of the rope pressing block is connected to the housing via a shaft. The shaft has a torsion spring, with one end fixed to the housing and the other end fixed within the rope pressing block. The spring force of the torsion spring forces the rollers on the concave arc surface of the rope pressing block to roll onto the rope located within the single rope drive wheel with the V-groove.

[0006] Compared with the prior art, this invention has the following advantages: First, it separates the inlet and outlet ropes, avoiding mutual interference, twisting, and knotting, thus ensuring its reliability and safety. It also solves the problem of friction between the rope and the rope groove regardless of the angle at which the rope enters or exits. Second, it improves safety protection during use. Third, it improves the stability of the rope's path within the device. Fourth, it solves the problem of lateral movement load-bearing capacity and provides a solution for overload use. Fifth, it is suitable for use with different rope diameters.

[0007] The invention has been tested and found that when using ropes of 8mm-14mm, it can generate sufficient friction. When suspending a 200kg weight, there is no slippage, whether in motion or at rest. When at rest, suspending a 500kg weight will not cause the weight to fall. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the overall layout.

[0009] Figure 2 This is a diagram of the rope path.

[0010] Figure 3 This is a schematic diagram of the rope-blocking plate structure.

[0011] Figure 4 This is a schematic diagram of a rope pulley structure.

[0012] Figure 5 This is a diagram showing the locking mechanism of the rope retainer.

[0013] Figure 6 This is a diagram showing the opening of the rope guard latch.

[0014] Figure 7 This is a schematic diagram after the rope guard plate has rotated.

[0015] Figure 8 This is a diagram showing the rope pulling to both sides.

[0016] Figure 9 This is a diagram showing how the partition can be flipped up.

[0017] Figure 10 This is a diagram illustrating the locking mechanism of the protective cover.

[0018] Figure 11 This is a diagram showing the protective cover being opened.

[0019] Figure 12 This is a schematic diagram of the lateral movement of the rope climber.

[0020] Figure 13 This is a schematic diagram of a pulley system.

[0021] Figure 14 This is a schematic diagram of the guide rope pulley structure and the adaptation of ropes of different thicknesses.

[0022] Figure 15 This is a schematic diagram of the rope-pressing swing block. Implementation

[0023] It should be noted that the embodiments of the present invention are based on the applicant's prior patent technology and are invented to address the deficiencies of the prior technology (see background technology for details). Objective: To solve the problems existing in the background technology and ensure the reliability and safety of the crawler during operation.

[0024] Example 1: Refer to Appendix Figure 1-15 A rope-climbing guide mechanism capable of driving multiple rope diameters includes a drive wheel with a V-groove, a rope-pressing swing block, and a housing. Above the single-rope drive wheel 1 with the V-groove, there is a left guide wheel 3 on the upper left and a right guide wheel 4 on the upper right. A partition 5 is located between the left and right guide wheels. A rope-blocking plate 6 is located directly in front of the two guide wheels. One end of the rope-blocking plate 6 is rotatable around the axis of rotation of the right guide wheel 4 (i.e., the axis of rotation of the right guide wheel is also the axis of rotation of the rope-blocking plate). The other end of the rope-blocking plate 6 is engaged with the axis of rotation of the left guide wheel 3. A rope-pressing swing block 7 is installed below the right guide wheel 4 on the right side of the drive wheel 1. The upper end of the rope-pressing swing block 7 is connected to the housing 9 via a shaft. The shaft has a torsion spring, one end of which is fixed to the housing 9, and the other end of the torsion spring 71 is fixed within the rope-pressing swing block 7. The spring force of the torsion spring forces the rollers on the concave arc surface of the rope-pressing swing block 7 to roll onto the rope 13.

[0025] The single-rope drive wheel 1 has a V-groove 11 with an angle between 25 and 30 degrees. The minimum width is about 5 mm and the maximum width is about 16 mm. The left wall of the V-groove 11 has several left ribs 13 and the right wall of the V-groove 11 has the same number of right ribs 12. The left ribs 13 and the right ribs 12 are arranged alternately.

[0026] There is an auxiliary hanging ear 02 on each of the upper left and right sides of the front panel of the casing 9.

[0027] Bearings 31 are installed between the left guide rope wheel 3 and the right guide rope wheel 4 and the rotating shaft. The concave arc-shaped outer surfaces of the left guide rope wheel 3 and the right guide rope wheel 4 form two rope passage cavities with the rope separator plate. The rope passage cavities allow the rope 13 to pass through, and the rope 13 can form a rolling engagement with the left guide rope wheel 3 and the right guide rope wheel 4 respectively.

[0028] See attached document Figure 1 , Figures 3-6The rope deflector 6 consists of two pivot spacers 61 and a housing 62. The inner boss shaft at one end of the housing 62 is inserted into the boss shaft hole in the two pivot spacers 61. The housing 62 can rotate around the boss shaft to open or close. The two pivot spacers have shaft holes and opening slots (concave arc-shaped slots). The shaft holes fit onto the pivot 11 of the right guide wheel 4 to form a rotatable fit, and the opening slots fit onto the pivot 10 of the left guide wheel 3 to form an opening or closing fit. In other words, the two pivot spacers 61 of the rope deflector 6 have shaft holes that fit onto the pivot 11 of the right guide wheel 4 to form a rotatable fit, and the two pivot spacers 61 of the rope deflector 6 have opening slots that fit onto the pivot 10 of the left guide wheel 3 to form an opening or closing fit. When closed, the slots serve to position the distance between the two pivots. A lever 63 is placed in the cavity between the outer shell 62 and the two pivot spacers 61. Pushed by a spring 65, the lever forms an openable and closable latch with the opening slots of the two pivot spacers 61, locking onto the pivot 10 of the left guide wheel 3. In its natural state, the lever forms a closed latch with the opening slots under the action of the spring. The rope-blocking plate 6 is composed of the two pivot spacers 61 and the outer shell 62. The two ends of the two pivot spacers 61 are fixedly attached to the pivots 10 and 11 respectively, forming a stable fixed fit. At this time, the rope-blocking plate 6 blocks the opening between the left and right guide wheels 3 and the right guide wheel 4, preventing the rope from slipping out of the guide wheels. Simultaneously, the two pivot spacers 61 of the rope-blocking plate 6 are locked onto the pivots 10 and 11, also preventing the pivots 10 and 11 from tilting to the sides when the rope is pulled to the sides. By moving the lever 64, the lever 63 can be moved, opening one side of the slot of the two rotating shaft spacer plates 61, thus releasing the rotating shaft 10. The rope guide plate 6 then only has a rotational engagement with the rotating shaft 11. Rotating the rope guide plate 6 opens the opening between the two guide wheels 3 and 4, facilitating rope installation or removal. The lever 63 is located within the cavity formed by the stacked outer shell 062 and the two rotating shaft spacer plates 061. Under the push of the spring 65, the lever forms an openable and closable locking mechanism with the slot of the two rotating shaft spacer plates 61.

[0029] See attached document Figure 1 , Figure 2 , Figures 7-11 and Figure 14 The upper end of the partition 5 has a rotating and flipping mechanism. A partition 5 is installed between the left guide rope wheel 3 and the right guide rope wheel 4. The upper part of the partition 5 is connected to the machine housing 9 via a shaft or bolt, and the partition 5 can rotate around the shaft or bolt. A shift fork 8 is installed in the V-shaped groove 11 above the drive wheel 1. The shift fork 8 is in the shape of an equilateral triangle, with the base of the triangle matching the base of the V-shaped groove with a small gap. The upper end of the triangle has a boss, and the middle of the boss has a groove. The two equilateral sides of the triangle, the unobstructed bottom of the V-shaped groove, and the partition 5 form a continuous rope channel. The lower end of the partition 5 is inserted into the groove of the boss at the upper end of the shift fork (see...). Figure 2 This not only specifies a path for the rope to run without crossing it, but also meets the requirement for the partition 5 to open upwards. (See...) Figure 11 .

[0030] See attached document Figure 1 , Figure 10 and Figure 11 The drive wheel 1 is equipped with a protective cover 12. The lower end of the protective cover 12 has a rotating shaft 121, and the upper end has a stop block 122. The protective cover 12 can be opened. When the rope-blocking plate 6 is locked, the upper stop block 122 is blocked, the protective cover 12 is locked, and the drive wheel 1 is completely covered inside the protective cover 12. When the rope-blocking plate 6 is opened and a rope needs to be installed, the protective cover 12 can be opened along the rotating shaft 121 to expose the drive wheel 1, which facilitates the installation of the rope.

[0031] See attached document Figure 1 , Figure 2 and Figure 15 The outer shell of the rope-pressing swing block 7 is arc-shaped, and two or more rollers 75 are installed on the inner side of the arc-shaped shell. The rollers 75 and the inner side of the arc-shaped shell form a T-shaped structure. One end of the rope-pressing swing block has a pin hole 72, and a torsion spring 71 is installed around the rotating shaft inside the pin hole 72. One end of the torsion spring 71 is fixed to the housing 9, and the other end is fixed to the rope-pressing swing block 7. Its elastic force direction makes the inner side of the arc-shaped shell of the rope-pressing swing block 7 closely adhere to the drive wheel 2. The rollers 75 with the T-shaped structure on the inner side of the arc-shaped shell can penetrate deep into the V-groove 11 of the drive wheel 1 and roll on the rope. The roller surface on the concave arc surface of the rope-pressing swing block 07 is a concave arc surface and the concave arc surface is an uneven and rough surface; or the roller surface on the concave arc surface of the rope-pressing swing block 07 is an uneven and rough surface. Figure 14 These are the different positions of the pressure rope pendulum block under different rope diameters.

[0032] With the above structure, when using ropes of 8mm to 14mm, a single rope and the drive wheel can generate sufficient friction, provided that the wrap angle is not less than 200 degrees. Within this range, any rope diameter can achieve or exceed a suspension weight of 500kg.

[0033] It should be understood that although the above embodiments provide a detailed textual description of the design concept of the present invention, these textual descriptions are merely simple textual descriptions of the design concept of the present invention, and not limitations on the design concept of the present invention. Any combination, addition, or modification that does not exceed the design concept of the present invention falls within the protection scope of the present invention.

Claims

1. A rope guiding mechanism capable of driving ropes of various diameters, comprising a driving wheel with a V-shaped groove, a rope pressing swing block and a housing, characterized in that: The single rope driving wheel (1) of the V-shaped groove has a left rope guide wheel (3) on the left side above the single rope driving wheel (1) and a right rope guide wheel (4) on the right side above the single rope driving wheel (1), and a plate (5) capable of rotating around an axis is arranged between the left rope guide wheel and the right rope guide wheel, the upper end of the plate (5) is capable of rotating and being flipped upwards, the plate (5) is flipped upwards to increase the gap between the two rope guide wheels, the plate (5) allows the rope to run along a specified path, and the plate (5) is more convenient for the rope to enter the rope guide wheels when the rope is installed; a two-rotation-axis distance plate (61) is arranged in front of the two rope guide wheels, one end of the two-rotation-axis distance plate (61) is rotatable around the rotation axis of the right rope guide wheel (4), and the other end of the two-rotation-axis distance plate (61) is connected with the rotation axis of the left rope guide wheel (3); a rope pressing swing block (7) is arranged on the right side of the driving wheel (1) below the right rope guide wheel (4), the upper end of the rope pressing swing block (7) is connected with a machine shell (9) through a rotation axis, the rotation axis is provided with a torsional spring, one end of the torsional spring is fixed on the machine shell (9), the other end of the torsional spring (71) is fixed on the rope pressing swing block (7), and the elastic force direction of the torsional spring forces the roller on the concave arc surface of the rope pressing swing block (7) to roll and press on the rope (13) in the V-shaped groove single rope driving wheel (1). ​ 2. The climbable rope guide of claim 1, wherein: The driving wheel (1) is provided with a protective cover (12).

3. The driveable multi-rope diameter climbing guide mechanism of claim 1, wherein: The front panel of the machine shell (9) is provided with an auxiliary hanging ear (2) on the left side and an auxiliary hanging ear (2) on the right side.

4. The driveable multi-rope diameter climbing guide mechanism of claim 1, wherein: Bearing (31, 41) is arranged between the left rope guide wheel (3) and the right rope guide wheel (4) and the rotation axis, the concave arc outer surface of the left rope guide wheel (3) and the right rope guide wheel (4) and the plate (5) form two rope passing cavities, the rope passing cavities are used for allowing the rope (13) to pass through, and the rope (13) is in rolling fit with the left rope guide wheel (3) and the right rope guide wheel (4).

5. The driveable multi-rope diameter climbing guide mechanism of claim 1, wherein: One end of the two-rotation-axis distance plate is provided with an axis hole, the other end of the two-rotation-axis distance plate is provided with a concave arc groove matched with the rotation axis, the axis hole of the two-rotation-axis distance plate is sleeved on the rotation axis (11) of the right rope guide wheel (4) to form rotating fit, and the concave arc groove of the two-rotation-axis distance plate is in clamping and rotating fit with the rotation axis (10) of the left rope guide wheel (3).

6. The driveable multi-rope diameter climbing guide mechanism of claim 1, wherein: The cavity formed by the superposition of the shell and the two-rotation-axis distance plate (61) is provided with a pushing block (63), the pushing block is pushed by a spring (65) to form a lockable and releasable buckle with the open slot of the two-rotation-axis distance plate (61).

7. The driveable multi-rope diameter climbing guide mechanism of claim 1, wherein: The upper end of the plate (5) is provided with a rotating and flipping mechanism.

8. The driveable multi-rope diameter climbing guide mechanism of claim 2, wherein: The protective cover (12) is provided with a rotation axis (121) below and a stop block (122) above, and the protective cover (12) is openable.

9. The driveable multi-rope diameter climbing guide mechanism of claim 1, wherein: The diameter of the rope (13) is randomly selected within the range of 8mm-14mm and the range includes the end values, and the rope (13) with the diameter of 8mm-14mm meets the requirement that the rope guide mechanism does not slip when a 200kg weight is hung thereon in a running state or a static state.

10. The method of operating a driveable multi-rope diameter rope guide as defined in claim 1, wherein: The rope blocking plate in the rope guide mechanism is arranged at the opening between the left rope guide wheel and the right rope guide wheel to prevent the rope from slipping out of the rope guide wheel and prevent the rotation axes of the left rope guide wheel and the right rope guide wheel from tilting to the two sides when the rope is pulled to the two sides, the rope blocking plate is unlocked, the two-rotation-axis distance plates of the rope blocking plate are rotated along the rotation axis of the right rope guide wheel, the space between the left rope guide wheel and the right rope guide wheel is opened, and the rope is conveniently installed or taken out. The partition between the two guide rope wheels is to let the ropes run along the specified path respectively, because the motion directions of the in and out ropes are opposite, to prevent interference, the partition is arranged between the in and out ropes, and because the partition can be turned up, the gap between the guide rope wheels can be increased, which is more convenient for the ropes to enter the guide rope wheels when the ropes are installed; The driving wheel in the rope guide mechanism has a guide rope wheel on each of the left and right sides above the driving wheel, and the outer surfaces of the two guide rope wheels are provided with circular arc grooves, the circular arc grooves and the partition form two rope channels, and when the two ropes pass through the respective rope channels, the two ropes will not interfere with each other, be spliced or knotted; the ropes and the guide rope wheels form rolling fit to reduce the resistance of the ropes when passing through When the ropes are respectively pulled to the two sides, the rolling fit of the ropes and the guide rope wheels reduces the friction between the guide rope wheels and the ropes; When the rope guide mechanism moves horizontally, a bearing rope is installed on each of the left and right auxiliary hanging ears on the upper end of the front panel of the shell, the bearing rope can be hung on the main rope through a roller, and then the ropes (13) are not affected by the load; when it is necessary to hoist a load exceeding the rated load, an auxiliary fixed pulley or a pulley block is used to reduce the load to a range that can be borne by the ropes, the auxiliary hanging ear is used to fix the ropes or the pulley block, and the rope guide mechanism can also be balanced when moving horizontally; The protective cover in the rope guide mechanism has a rotating shaft that can be turned down to open the protective cover, and the protective cover is closed by turning up the blocking rope plate, the blocking rope plate prevents the protective cover from being opened accidentally, so that when the driving wheel is working, the protective cover completely covers the moving parts, providing safety protection for the operator, when the ropes are installed, the blocking rope plate is unlocked, and when the protective cover is opened along the rotating shaft, the protective cover is unlocked and can be opened along the rotating shaft of the protective cover, exposing the driving wheel, which is convenient for installing the ropes.

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