Speed difference automatic controller

Abstract

The invention relates to the technical field of safety protection appliances, in particular to a speed difference automatic controller which comprises a shell, a steel wire rope is wound on a rope winding disc, the speed difference automatic controller further comprises a limiting head fixedly connected to one end of the steel wire rope, a limiting groove is formed in the rope winding disc, and a locking bolt is connected to the limiting groove through threads. The limiting head is located in the limiting groove and is limited and fixed through a locking bolt. The device is provided with the replacement opening in the shell, the limiting head on the steel wire rope can be conveniently and rapidly disassembled, the whole shell does not need to be disassembled, meanwhile, when the steel wire rope is completely pulled out of the shell, the hexagonal protrusion can be driven to be inserted into the cylinder through reset of the tension spring, then the rope winding disc is locked, and the rope winding disc is prevented from rotating under the action of the clockwork spring; meanwhile, when the limiting head on the steel wire rope is pulled out of the shell, the traction rope can be synchronously pulled out, and therefore when a new steel wire rope is installed subsequently, the limiting head on the new steel wire rope can be rapidly and conveniently pulled into the limiting groove through the traction rope.

Description

Technical Field

[0001] The invention relates to the technical field of safety protection equipment, in particular to a speed difference automatic controller. Background Art

[0002] The speed differential automatic controller, also known as the fall arrester, is an efficient safety device that can quickly brake and lock the falling object within a preset distance, ensuring that in operations such as cargo lifting, it not only effectively protects the life safety of ground workers, but also prevents the suspended workpiece from being damaged. The device uses its unique speed differential automatic control mechanism to immediately activate the braking function when an abnormal falling speed is detected, thereby achieving effective control of the risk of falling. However, as the speed differential automatic controller is used for a longer time, its key components, especially the wire rope, may gradually wear out due to long-term stress, friction and other factors. This wear will not only reduce the overall performance of the device, but may also cause safety hazards. Therefore, in order to ensure the continued effectiveness and safety of the speed differential automatic controller, the wire rope must be replaced in a timely manner after it reaches a certain service life; Unfortunately, in the prior art, the process of replacing the wire rope inside the speed differential controller is relatively cumbersome. Usually, the operator needs to completely disassemble the outer casing of the device before accessing the screws that fix the end of the wire rope. This step is not only time-consuming and laborious, but may also increase the risk of misoperation, and places high demands on the operator's skills and experience. For this reason, we propose a speed differential controller. Summary of the invention

[0003] A technical problem to be solved by the present application is: how to design a speed differential controller that can simplify the replacement process of the steel wire rope inside the speed differential controller and improve the replacement efficiency.

[0004] In order to solve the above technical problems, the embodiment of the present application provides a speed difference automatic controller, including a housing and a rope winding drum rotatably arranged in the housing, the rope winding drum is wound with a steel wire rope, and also includes: The limit head is fixedly connected to one end of the wire rope, and the rope winding drum is provided with a limit groove, the limit groove is threadedly connected with a locking bolt, the limit head is located in the limit groove and is limited and fixed by the locking bolt; A replacement port is provided on the housing, and the rope winding drum is rotated so that the locking bolt is aligned with the replacement port; A traction rope is arranged on the rope winding drum and one end of which is detachably connected to the limit head. After removing the locking bolt, the limit head is pulled out, and at the same time, one end of the traction rope is driven to pass through the housing; The winding assembly is arranged on the rope winding drum and connected to one end of the traction rope. After the limit head of the new wire rope is connected to the traction rope, the traction rope is wound up by the winding assembly to drive the limit head to be embedded in the limit groove.

[0005] In some embodiments, one end of the traction rope is fixedly connected to a cylindrical protrusion, and one end of the limit head is provided with a C-shaped groove, and one end of the cylindrical protrusion is located in the C-shaped groove to connect the limit head and the traction rope.

[0006] In some embodiments, the winding assembly includes an axis 1 fixedly connected to a rope winding drum, a reel is rotatably connected to the axis 1, one end of the traction rope slides through a limiting groove and is fixed to the reel, the end of the reel adopts a hollow design and a torsion spring 1 is provided inside it, the two ends of the torsion spring 1 are respectively fixed to the axis 1 and the reel, and a locking piece is provided on the rope winding drum. When the reel is rotated, the torsion spring 1 is twisted to provide it with self-recovery ability, and the reel is locked by the locking piece.

[0007] In some embodiments, the locking member includes a plurality of ratchet grooves evenly and equidistantly opened on the reel, a U-shaped block is slidably connected inside the rope winding drum, a second shaft is rotatably connected to the U-shaped block, one end of the second shaft is fixedly connected to a jack tooth, and one end of the second shaft passes through the U-shaped block and is fixedly connected to a circular plate, a second torsion spring is sleeved on the second shaft, and the two ends of the second torsion spring are respectively fixed to the circular plate and the U-shaped block, and the second torsion spring is used to ensure that the jack tooth always has a tendency to engage with the ratchet groove; A cylinder is arranged on the rope winding drum, one end of which is provided with a hexagonal groove, a positioning column is slidably connected to the shell, one end of which is fixedly connected with a hexagonal protrusion, and the positioning column is moved to drive the hexagonal protrusion to be inserted into the hexagonal groove to lock the rope winding drum; A linkage piece is arranged between the cylinder and the U-shaped block. After the positioning column and the cylinder are docked, the positioning column is rotated and the U-shaped block is driven to move by the linkage piece, so that the jack teeth are disengaged from the ratchet groove after moving.

[0008] In some embodiments, the linkage member includes a guide rod fixedly connected to the rope winding drum, one end of the guide rod slides through the U-shaped block, and a spring is sleeved on the guide rod, and the two ends of the spring are respectively fixed to the guide rod and the U-shaped block, and the U-shaped block is moved and the spring is compressed to provide a self-restoring elastic force for it; A hollow rectangular frame is fixedly connected to one end of the cylinder, and an axis three is fixedly connected to the U-shaped block. One end of the axis three is located in the hollow rectangular frame, and rotating the cylinder drives the U-shaped block to slide.

[0009] In some embodiments, a sealing cover is provided on the housing to seal the replacement port.

[0010] In some embodiments, the cylindrical convex surface is designed with rubber material.

[0011] In some embodiments, a circular ring is rotatably connected to the outer shell, a hollow cylinder is fixedly connected to the circular ring, one end of the hollow cylinder passes through the outer shell, a deflection plate is fixedly connected to the circular ring, one end of the deflection plate is provided with an extrusion column, the extrusion column contacts and abuts against the steel wire rope wound on the rope winding drum, and a torsion spring three is sleeved on the hollow cylinder, the two ends of the torsion spring three are respectively fixed to the hollow cylinder and the outer shell, when the rope winding drum rotates to reel in the steel wire rope, the extrusion column is pushed to deflect, and at the same time, the torsion spring two is subjected to force and twisted to provide self-restoring elastic force for it; A sliding protrusion is fixedly connected to the shell, a sliding groove is provided on the positioning column, and an annular groove connected to the sliding groove is provided on the positioning column. Two arc-shaped protrusions are symmetrically fixedly connected to the inner wall of the hollow cylinder, a sliding protrusion is fixedly connected to the positioning column, and a tension spring is sleeved on the positioning column, and two ends of the tension spring are respectively fixed to the positioning column and the shell. When the wire rope is wound on the rope winding drum, the sliding protrusion is located in the sliding groove, and the tension spring is in an elongated state. The sliding protrusion is located on one side of the arc-shaped protrusion and contacts with it to prevent the positioning column from moving downward.

[0012] In some embodiments, the extrusion column is rotatably connected to the deflection plate via a rotating shaft.

[0013] In some embodiments, one end of the positioning column is fixedly connected to a knob, the knob is hollow in design, and the tension spring is located inside the knob.

[0014] The present invention has at least the following beneficial effects: 1. This device is designed with a replacement port on the shell to facilitate the rapid removal of the limit head on the wire rope without disassembling the entire shell.

[0015] 2. When the steel wire rope is completely pulled out of the housing, the tension spring can be used to reset and drive the hexagonal protrusion to insert into the cylinder, thereby locking the rope winding drum to prevent the rope winding drum from rotating under the action of the spring.

[0016] 3. When the device pulls the limit head on the wire rope out of the housing, the traction rope will be pulled out synchronously, and then when a new wire rope is installed later, the limit head on the new wire rope can be quickly and conveniently pulled into the limit groove by using the traction rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention; Figure 2 For the present invention Figure 1 Another structural diagram; Figure 3 For the present invention Figure 1 Schematic diagram of the local cross-section structure; Figure 4 For the present invention Figure 3Schematic diagram of the local cross-section structure; Figure 5 For the present invention Figure 4 Schematic diagram of the local cross-section structure; Figure 6 For the present invention Figure 5 Schematic diagram of the structure of the middle A area; Figure 7 For the present invention Figure 5 Another structural diagram; Figure 8 For the present invention Figure 7 Schematic diagram of the structure of the middle B area; Fig. 9 For the present invention Figure 1 Schematic diagram of the local cross-section structure; Fig.10 For the present invention Fig. 9 Schematic diagram of the local cross-section structure; Fig.11 This is a structural diagram of Example 2 of the present invention.

[0018] In the figure: 1-housing; 11-rope winding drum; 12-wire rope; 2-limiting head; 3-limiting groove; 4-locking bolt; 5-replacement port; 6-traction rope; 7-winding assembly; 61-cylindrical convex; 62-C-shaped groove; 63-axis 1; 64-reel; 65-torsion spring 1; 66-locking piece; 67-ratchet groove; 68-U-shaped block; 69-axis 2; 71-jack tooth; 72-circular plate; 73-torsion spring 2; 74-cylinder ;75-hexagonal groove;76-positioning column;77-hexagonal convex;78-linkage;79-guide rod;81-spring;82-hollow rectangular frame;83-axis three;84-sealing cover;85-annular body;86-hollow cylinder;87-deflection plate;88-extrusion column;89-torsion spring three;91-sliding convex one;92-sliding groove one;93-annular groove;94-arc convex;95-sliding convex two;96-tension spring;97-knob. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Example 1: Please refer to Figure 1-Figure 10 The present invention provides a technical solution: a speed difference automatic controller, comprising a housing 1 and a rope winding drum 11 rotatably arranged in the housing 1, a steel wire rope 12 is wound around the rope winding drum 11, and also comprising: The limit head 2 is fixedly connected to one end of the wire rope 12, and a limit groove 3 is provided on the rope winding drum 11, and a locking bolt 4 is connected to the limit groove 3 by a thread, and the limit head 2 is located in the limit groove 3 and is fixed by the locking bolt 4; A replacement opening 5 is provided on the housing 1, and the rope winding drum 11 is rotated so that the locking bolt 4 is aligned with the replacement opening 5; The traction rope 6 is arranged on the rope winding drum 11 and one end of which is detachably connected to the limit head 2. After removing the locking bolt 4, the limit head 2 is pulled out, and at the same time, one end of the traction rope 6 is driven to pass through the housing 1; The winding assembly 7 is arranged on the rope winding drum 11 and connected to one end of the traction rope 6. After the limit head 2 of the new steel wire rope 12 is connected to the traction rope 6, the traction rope 6 is wound up by the winding assembly 7 to drive the limit head 2 to be embedded in the limit groove 3; Specifically, the device is designed with a replacement port 5 on the outer shell 1, which is convenient for quickly removing the limit head 2 on the wire rope 12 without disassembling the entire outer shell 1. At the same time, when the wire rope 12 is completely pulled out of the outer shell 1, the tension spring 96 can be used to reset and drive the hexagonal protrusion 77 to insert into the cylinder 74, thereby locking the rope drum 11 to prevent the rope drum 11 from rotating under the action of the spring. At the same time, when the limit head 2 on the wire rope 12 is pulled out of the outer shell 1, the traction rope 6 will be pulled out synchronously, and then when the new wire rope 12 is installed later, the traction rope 6 can be used to quickly and conveniently pull the limit head 2 on the new wire rope 12 into the limit groove 3.

[0021] One end of the traction rope 6 is fixedly connected with a cylindrical protrusion 61, and one end of the limit head 2 is provided with a C-shaped groove 62. One end of the cylindrical protrusion 61 is located in the C-shaped groove 62 to detachably connect the limit head 2 and the traction rope 6, which is convenient for replacing the wire rope 12.

[0022] The winding assembly 7 includes a shaft 63 fixedly connected to the rope winding drum 11, and a reel 64 is rotatably connected to the shaft 63 through a bearing. One end of the traction rope 6 slides through the limit groove 3 and is fixedly connected to the reel 64. The end of the reel 64 adopts a hollow design and a torsion spring 65 is arranged inside it. The two ends of the torsion spring 65 are respectively fixedly connected to the shaft 63 and the inner wall of the reel 64. A locking piece 66 is arranged on the rope winding drum 11. When the reel 64 is rotated, the torsion spring 65 is twisted to provide it with self-recovery ability. At the same time, the reel 64 is locked by the locking piece 66. Then, after the limit head 2 on the wire rope 12 is pulled out of the outer casing 1 and the limit head 2 is separated from the traction rope 6, it can be ensured that the traction rope 6 is prevented from being automatically retracted.

[0023] The locking member 66 includes a plurality of ratchet grooves 67 evenly and equidistantly provided on the reel 64. A U-shaped block 68 is slidably connected in the rope reel 11. A second shaft 69 is rotatably connected to the U-shaped block 68 through a bearing. A jack tooth 71 is fixedly connected to one end of the second shaft 69. One end of the second shaft 69 passes through the U-shaped block 68 and is fixedly connected to a circular plate 72. A second torsion spring 73 is sleeved on the second shaft 69. The two ends of the second torsion spring 73 are respectively fixed to the circular plate 72 and the U-shaped block 68. The second torsion spring 73 is used to make the jack tooth 71 always tend to mesh with the ratchet groove 67. The design of the jack tooth 71, the second torsion spring 73 and the ratchet groove is similar to the ratchet wheel ratchet design in the prior art, and is used to unidirectionally lock the reel 64. The cylinder 74 is rotatably connected to the rope drum 11, and a hexagonal groove 75 is provided at one end of the cylinder 74. A positioning column 76 is slidably connected to the housing 1, and a hexagonal protrusion 77 is fixedly connected to one end of the positioning column 76. The positioning column 76 is moved to drive the hexagonal protrusion 77 to be inserted into the hexagonal groove 75 to lock the rope drum 11. Specifically, when replacing the wire rope 12, the wire rope 12 is first pulled out of the outlet of the device. At this time, the tension spring 96 is reset to drive the hexagonal protrusion 77 to be inserted into the cylinder 74, thereby locking the rope drum 11 to prevent the rope drum 11 from rotating under the action of the spring, and then the sealing cover 84 is pried open. Make the locking bolt 4 exposed, then remove the locking bolt 4, then pull out the original steel wire rope 12 and the limit head 2 from the product outlet, and pull out the traction rope 6 synchronously, then connect the new steel wire rope 12 with the traction rope 6, and then rotate the positioning column 76 to unlock the reel 64, so as to use the torsion spring 65 to reset and drive the reel 64 to rotate to reel the traction rope 6, and then drive the limit head 2 to embed into the limit groove 3, and then install the locking bolt 4, and then pull out the positioning column 76 to release the lock of the rope drum 11, so that the steel wire rope 12 is automatically recovered under the action of the spring force, and finally close the sealing cover 84; A linkage member 78 is provided between the cylinder 74 and the U-shaped block 68 . After the positioning column 76 and the cylinder 74 are docked, the positioning column 76 is rotated and the linkage member 78 is used to drive the U-shaped block 68 to move, so that the jack tooth 71 moves and disengages from the ratchet groove 67 .

[0024] The linkage member 78 includes a guide rod 79 fixedly connected to the rope winding drum 11, one end of the guide rod 79 slides through the U-shaped block 68, and a spring 81 is sleeved on the guide rod 79, and the two ends of the spring 81 are respectively fixedly connected to the guide rod 79 and the U-shaped block 68, and the U-shaped block 68 is moved and the spring 81 is compressed to provide a self-restoring elastic force for it; A hollow rectangular frame 82 is fixedly connected to one end of the cylinder 74, and an axis three 83 is fixedly connected to the U-shaped block 68. One end of the axis three 83 is located in the hollow rectangular frame 82 and is slidably connected to its inner wall. Rotating the cylinder 74 drives the hollow rectangular frame 82 to rotate, thereby driving the axis three 83 and the U-shaped block 68 to slide.

[0025] A sealing cover 84 is provided on the housing 1 to seal the replacement port 5 and improve the sealing performance of the device.

[0026] The surface of the cylindrical protrusion 61 is designed with rubber material to increase the friction between the cylindrical protrusion 61 and the C-shaped groove 62 and improve the stability of the device.

[0027] A circular ring 85 is rotatably connected to the outer shell 1, and a hollow cylinder 86 is fixedly connected to the circular ring 85. One end of the hollow cylinder 86 passes through the outer shell 1. A deflection plate 87 is fixedly connected to the circular ring 85. An extrusion column 88 is arranged at one end of the deflection plate 87. The extrusion column 88 contacts and abuts against the steel wire rope 12 wound on the rope winding drum 11, and a torsion spring 3 89 is sleeved on the hollow cylinder 86. The two ends of the torsion spring 3 89 are respectively fixedly connected to the hollow cylinder 86 and the outer shell 1. When the rope winding drum 11 rotates to reel in the steel wire rope 12, the extrusion column 88 is pushed and deflected, and at the same time, the torsion spring 2 73 is twisted to provide a self-restoring elastic force for it. A sliding protrusion 91 is fixedly connected to the housing 1, a sliding groove 92 is provided on the positioning column 76, and an annular groove 93 connected to the sliding groove 92 is provided on the positioning column 76. Two arc-shaped protrusions 94 are symmetrically fixedly connected to the inner wall of the hollow cylinder 86, and a sliding protrusion 2 95 is fixedly connected to the positioning column 76. A tension spring 96 is sleeved on the positioning column 76, and the two ends of the tension spring 96 are respectively fixedly connected to the positioning column 76 and the housing 1. Specifically, when the wire rope 12 is wound on the rope winding drum 11, the sliding protrusion 91 is located in the sliding groove 92, and the tension spring 96 is in an extended state, and the sliding protrusion 2 95 is located on one side of the arc-shaped protrusion 94 and contacts it to block the positioning column 76 from moving downward. The locking member 72 is locked in the locking mechanism 76 and the locking member 76 is engaged with the locking member 78. The locking member 76 is engaged with the locking member 79 and the locking member 78 is engaged with the locking member 79. The locking member 76 is engaged with the locking member 78 and the locking member 78 is engaged with the locking member 79.

[0028] The extrusion column 88 is rotatably connected to the deflection plate 87 via a rotating shaft, so as to reduce the friction between the extrusion column 88 and the wire rope 12 .

[0029] Example 2: Please refer to Figure 1-Figure 11 , the present invention provides a technical solution: Example 2 is optimized on the basis of Example 1; One end of the positioning column 76 is fixedly connected to a knob 97 . The knob 97 is hollow in design, and the tension spring 96 is located inside the knob 97 to facilitate the user to rotate the positioning column 76 . At the same time, the hollow design of the knob 97 can hide and protect the tension spring 96 .

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A speed difference automatic controller, comprising a housing (1) and a rope winding drum (11) rotatably arranged in the housing (1), wherein a steel wire rope (12) is wound around the rope winding drum (11), characterized in that: Also included are: A limit head (2) is fixedly connected to one end of the steel wire rope (12), and a limit groove (3) is provided on the rope winding drum (11), a locking bolt (4) is connected to the limit groove (3) by a thread, and the limit head (2) is located in the limit groove (3) and is fixed by the locking bolt (4); A replacement opening (5) is provided on the housing (1), and the rope winding drum (11) is rotated so that the locking bolt (4) is aligned with the replacement opening (5); A traction rope (6) is arranged on the rope winding drum (11) and one end of which is detachably connected to the limit head (2). After removing the locking bolt (4), the limit head (2) is pulled out, and at the same time, one end of the traction rope (6) is driven to pass through the housing (1); The winding assembly (7) is arranged on the rope winding drum (11) and connected to one end of the traction rope (6). After the limit head (2) of the new steel wire rope (12) is connected to the traction rope (6), the traction rope (6) is wound up by the winding assembly (7) to drive the limit head (2) to be embedded in the limit groove (3).

2. The speed difference automatic controller according to claim 1, characterized in that: One end of the traction rope (6) is fixedly connected to a cylindrical protrusion (61), and one end of the limit head (2) is provided with a C-shaped groove (62), and one end of the cylindrical protrusion (61) is located in the C-shaped groove (62) to connect the limit head (2) and the traction rope (6).

3. The speed difference automatic controller according to claim 2, characterized in that: The winding assembly (7) comprises a shaft (63) fixedly connected to the rope winding drum (11), a reel (64) being rotatably connected to the shaft (63), one end of the traction rope (6) slidingly passes through the limit groove (3) and is fixed to the reel (64), the end of the reel (64) is hollow in design and a torsion spring (65) is arranged inside the reel, the two ends of the torsion spring (65) are respectively fixed to the shaft (63) and the reel (64), a locking member (66) is arranged on the rope winding drum (11), when the reel (64) is rotated, the torsion spring (65) is twisted to provide it with self-restoring ability, and the reel (64) is locked by the locking member (66).

4. The speed difference automatic controller according to claim 3 is characterized in that: The locking member (66) comprises a plurality of ratchet grooves (67) uniformly and equidistantly arranged on the reel (64); a U-shaped block (68) is slidably connected inside the rope winding drum (11); a second shaft (69) is rotatably connected to the U-shaped block (68); one end of the second shaft (69) is fixedly connected to a jack tooth (71); one end of the second shaft (69) passes through the U-shaped block (68) and is fixedly connected to a circular plate (72); a second torsion spring (73) is sleeved on the second shaft (69); two ends of the second torsion spring (73) are respectively fixed to the circular plate (72) and the U-shaped block (68); the second torsion spring (73) is used to ensure that the jack tooth (71) always has a tendency to mesh with the ratchet groove (67); A cylindrical body (74) is arranged on the rope winding drum (11), one end of the cylindrical body (74) is provided with a hexagonal groove (75), a positioning column (76) is slidably connected to the housing (1), one end of the positioning column (76) is fixedly connected with a hexagonal protrusion (77), and the positioning column (76) is moved to drive the hexagonal protrusion (77) to be inserted into the hexagonal groove (75) to lock the rope winding drum (11); A linkage member (78) is provided between the cylinder (74) and the U-shaped block (68). After the positioning column (76) and the cylinder (74) are docked, the positioning column (76) is rotated and the linkage member (78) is used to drive the U-shaped block (68) to move, so that the jack tooth (71) moves and disengages from the ratchet groove (67).

5. The speed difference automatic controller according to claim 4, characterized in that: The linkage member (78) comprises a guide rod (79) fixedly connected to the rope winding drum (11), one end of the guide rod (79) slidingly passes through the U-shaped block (68), and a spring (81) is sleeved on the guide rod (79), and two ends of the spring (81) are respectively fixed to the guide rod (79) and the U-shaped block (68), and the U-shaped block (68) is moved and the spring (81) is compressed to provide a self-restoring elastic force for the U-shaped block (68); A hollow rectangular frame (82) is fixedly connected to one end of the cylindrical body (74), and a third shaft (83) is fixedly connected to the U-shaped block (68). One end of the third shaft (83) is located in the hollow rectangular frame (82), and the U-shaped block (68) is driven to slide by rotating the cylindrical body (74).

6. The speed difference automatic controller according to claim 5, characterized in that: The housing (1) is provided with a sealing cover (84) for sealing the replacement port (5).

7. The speed difference automatic controller according to claim 6, characterized in that: The surface of the cylindrical convex (61) is designed with rubber material.

8. The speed difference automatic controller according to claim 7, characterized in that: A circular ring (85) is rotatably connected to the outer shell (1), a hollow cylinder (86) is fixedly connected to the circular ring (85), one end of the hollow cylinder (86) passes through the outer shell (1), a deflection plate (87) is fixedly connected to the circular ring (85), one end of the deflection plate (87) is provided with an extrusion column (88), the extrusion column (88) contacts and abuts against the steel wire rope (12) wound on the rope winding drum (11), and a torsion spring three (89) is sleeved on the hollow cylinder (86), the two ends of the torsion spring three (89) are respectively fixed to the hollow cylinder (86) and the outer shell (1), when the rope winding drum (11) rotates to reel in the steel wire rope (12), the extrusion column (88) is pushed and deflected, and at the same time, the torsion spring two (73) is subjected to force and twisted to provide a self-restoring elastic force for it; A sliding protrusion (91) is fixedly connected to the housing (1), a sliding groove (92) is provided on the positioning column (76), and an annular groove (93) connected to the sliding groove (92) is provided on the positioning column (76). Two arc-shaped protrusions (94) are symmetrically fixedly connected to the inner wall of the hollow cylinder (86), a sliding protrusion (95) is fixedly connected to the positioning column (76), and a tension spring (96) is sleeved on the positioning column (76), and the two ends of the tension spring (96) are respectively fixed to the positioning column (76) and the housing (1). When the steel wire rope (12) is wound on the rope winding drum (11), the sliding protrusion (91) is located in the sliding groove (92), and the tension spring (96) is in a stretched state, and the sliding protrusion (95) is located on one side of the arc-shaped protrusion (94) and contacts with it to prevent the positioning column (76) from moving downward.

9. The speed difference automatic controller according to claim 8, characterized in that: The extrusion column (88) is rotatably connected to the deflection plate (87) via a rotating shaft.

10. The speed difference automatic controller according to claim 9, characterized in that: One end of the positioning column (76) is fixedly connected to a knob (97), the knob (97) is hollow in design, and the tension spring (96) is located inside the knob (97).

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