Falling protector for high-altitude operation

Abstract

The falling protector comprises a shell, a safety rope is arranged in the shell in a penetrating mode, a limiting plate is fixedly connected in the shell, a limiting assembly is installed in the shell and corresponds to the limiting plate, the limiting assembly and the limiting plate are located on the two sides of the safety rope respectively, a moving block is arranged in the shell, and a rope is installed on the moving block. The side wall of the shell is provided with an opening. The end, away from the moving block, of the rope penetrates through the opening to be connected with worker installation clothes. Two limiting blocks are connected in the shell in a sliding mode, the two limiting blocks are located on the two sides of the safety rope, a control assembly for controlling the two limiting blocks to move oppositely is installed in the shell, and the control assembly is located below the moving block and is in sliding fit with the moving block. The safety rope locking device is simple in structure, convenient to operate, capable of rapidly responding to limit a safety rope and good in locking effect.

Description

Technical Field

[0001] The invention relates to the technical field of fall arresters, in particular to a fall arrester for aerial work. Background Art

[0002] A fall arrester, also known as a speed differential, is a protective product. It can quickly brake and lock falling objects within a limited distance. It is suitable for cargo hoisting and aerial work. It can prevent damage to the suspended workpiece and protect the life of the operator. There are some problems in the use of existing aerial work fall arresters. The current speed differential fall arrester has a complex structure, resulting in high equipment processing costs. In addition, the existing fall arrester generally adopts a single limit locking structure, which has the problem of slow locking response and poor locking effect. Therefore, there is an urgent need for a high-altitude work fall arrester with a quick response and good locking effect. Summary of the invention

[0003] The purpose of the present invention is to provide a high-altitude work fall arrester to solve the problems existing in the above-mentioned prior art.

[0004] To achieve the above-mentioned purpose, the present invention provides the following solution: The present invention provides a high-altitude work fall arrester, including a shell, a safety rope is penetrated in the shell, a limit plate is fixedly connected in the shell, a limit assembly is installed in the shell corresponding to the limit plate, the limit assembly and the limit plate are respectively located on both sides of the safety rope, a moving block is arranged in the shell, a rope is installed on the moving block, an opening is opened in the side wall of the shell, one end of the rope away from the moving block passes through the opening and is connected to the worker's installation clothes; two limit blocks are slidably connected in the shell, the two limit blocks are located on both sides of the safety rope, a control assembly for controlling the two limit blocks to move toward each other is installed in the shell, and the control assembly is located below the moving block and slidably cooperates with the moving block.

[0005] Preferably, the limit assembly includes a rotating block located in the shell and rotatably connected to the shell, the side of the rotating block close to the safety rope is an arc-shaped surface, the radius of the arc line where the arc-shaped surface of the rotating block is located gradually increases from top to bottom, and the arc-shaped surface of the rotating block is provided with limit teeth, and a control rod is fixedly connected to the other side of the rotating block, and the ends of the two control rods away from the moving block are both rotatably connected to the moving block.

[0006] Preferably, a sliding rod is provided on a side of the moving block away from the rotating block, a ring is slidably sleeved on the sliding rod, and the rope is fixedly connected to the ring.

[0007] Preferably, the control component includes two turntables located in the shell and rotatably connected to the shell, the two turntables are respectively located on both sides of the safety rope and arranged corresponding to the limit blocks, the end faces of the turntables are fixedly connected with connecting columns, the connecting columns and the corresponding limit blocks are rotatably connected with connecting rods, the two connecting rods are symmetrically arranged about the safety rope, a rack is slidably connected in the shell, a connecting plate is fixedly connected to the top of the rack, a strip groove is provided on the connecting plate, a connecting block is fixedly connected to the bottom of the moving block, a roller matched with the strip groove is rotatably connected to the connecting block, the roller is located in the strip groove, and a tooth groove meshing with the rack is provided on the circumferential side of the turntable on the same side as the moving block.

[0008] Preferably, the other turntable is a ratchet disk, and a pawl is rotatably connected in the shell, and the pawl is adapted to the ratchet disk. A connecting rod is fixedly connected to the side of the pawl away from the ratchet disk, and the connecting rod is fixedly connected to an arc plate, and the arc plate slides with the shell, and the shell and the arc plate are correspondingly provided with through grooves, and a control gear is rotatably connected in the through groove, and a tooth groove meshing with the control gear is provided on the arc plate; a baffle is fixedly connected in the shell, and a reset spring is fixedly connected between the baffle and the pawl.

[0009] Preferably, a stopper is fixedly connected inside the shell, and the stopper is located above the moving block.

[0010] Preferably, a plurality of rotating wheels are rotatably connected in the shell, and the rotating wheels are located on both sides of the safety rope and are arranged in contact with the safety rope.

[0011] The present invention discloses the following technical effects: when a worker falls, the worker's body will pull the moving block downward, thereby driving the moving block to move downward, and the moving block drives the limiting component and the limiting plate to cooperate to limit the safety rope, and at the same time the moving block pushes the control component to move, thereby driving the two limiting blocks to further limit the safety rope, thereby ensuring the stability of the limiting; the present invention has a simple structure and is easy to operate, can quickly respond to limit the safety rope, and has a good locking effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0013] Figure 1 It is a schematic diagram of the structure of the fall arrester of the present invention;

[0014] Among them: 1. Shell; 2. Safety rope; 3. Limit plate; 4. Moving block; 5. Rope; 6. Opening; 7. Limit block; 8. Rotating block; 9. Control lever; 10. Sliding rod; 11. Ring; 12. Turntable; 13. Connecting rod; 14. Rack; 15. Connecting plate; 16. Strip groove; 17. Connecting block; 18. Roller; 19. Ratchet plate; 20. Ratchet pawl; 21. Connecting rod; 22. Arc plate; 23. Control gear; 24. Return spring; 25. Block; 26. Turntable. DETAILED DESCRIPTION

[0015] 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.

[0016] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] Reference Figure 1 The present invention provides a high-altitude work fall arrester, comprising a shell 1, a safety rope 2 is arranged through the shell 1, a limit plate 3 is fixedly connected to the shell 1, a limit assembly is installed in the shell 1 corresponding to the limit plate 3, the limit assembly and the limit plate 3 are respectively located on both sides of the safety rope 2, a moving block 4 is arranged in the shell 1, a rope 5 is installed on the moving block 4, an opening 6 is opened on the side wall of the shell 1, and one end of the rope 5 away from the moving block 4 passes through the opening 6 and is connected to the worker's installation clothes; two limit blocks 7 are slidably connected in the shell 1, and the two limit blocks 7 are located on both sides of the safety rope 2. A control assembly for controlling the two limit blocks 7 to move toward each other is installed in the shell 1, and the control assembly is located below the moving block 4 and slidably cooperates with the moving block 4. When the worker falls, the worker's body will pull the moving block 4 downward, thereby driving the moving block 4 to move downward, and the moving block 4 drives the limit assembly to cooperate with the limit plate 3 to limit the safety rope 2, and at the same time, the moving block 4 pushes the control assembly to move, thereby driving the two limit blocks to further limit the safety rope 2, thereby ensuring the stability of the limit.

[0018] Further optimized solution, the limit assembly includes a rotating block 8 located in the housing 1 and rotatably connected to the housing 1, the side of the rotating block 8 close to the safety rope 2 is an arc surface, the arc line where the arc surface of the rotating block 8 is located gradually increases in radius from top to bottom, and the arc surface of the rotating block 8 is provided with limit teeth, and the other side of the rotating block 8 is fixedly connected with a control rod 9, and the ends of the two control rods 9 away from the motion block 4 are both rotatably connected to the motion block 4. The motion block 4 drives the two rotating blocks 8 to rotate synchronously through the control rod 9, so that the arc surface with the limit teeth presses the safety rope 2 and the limit plate 3 to limit the safety rope 2.

[0019] In a further optimized solution, a sliding rod 10 is provided on the side of the moving block 4 away from the rotating block 8, a ring 11 is slidably sleeved on the sliding rod 10, and the rope 5 is fixedly connected to the ring 11. By sleeved the ring 11 on the sliding rod 10, it is ensured that the moving block 4 is driven to move only in the falling state, and the shaking of the moving block 4 during the rising process is prevented, thereby preventing the wrong locking.

[0020] A further optimized solution is provided, wherein the control component includes two turntables 12 located in the shell 1 and rotatably connected to the shell 1, the two turntables 12 are respectively located on both sides of the safety rope 2 and are arranged corresponding to the limit blocks 7, a connecting column is fixedly connected to the end face side of the turntable 12, a connecting rod 13 is rotatably connected between the connecting column and the corresponding limit block 7, the two connecting rods 13 are symmetrically arranged about the safety rope 2, a rack 14 is slidably connected in the shell 1, a connecting plate 15 is fixedly connected to the top of the rack 14, a strip groove 16 is provided on the connecting plate 15, a connecting block 17 is fixedly connected to the bottom of the moving block 4, a roller 18 adapted to the strip groove 16 is rotatably connected to the connecting block 17, the roller 18 is located in the strip groove 16, and a tooth groove meshing with the rack 14 is provided on the peripheral side of the turntable 12 on the same side as the moving block 4. The moving block 4 moves downward to push the connecting block 17 downward, thereby driving the rack 14 downward. The rack 14 drives a turntable 12 to rotate, thereby driving the two turntables 12 to rotate in the opposite direction, thereby pushing the two limit blocks 7 to move toward each other through the connecting rod 13 to lock the safety rope 2.

[0021] Further optimization scheme, the other turntable 12 is a ratchet disk 19, the two turntables 12 are driven by gears and rotate in opposite directions, a ratchet 20 is rotatably connected in the housing 1, the ratchet 20 is adapted to the ratchet disk 19, the ratchet 20 is fixedly connected to the side of the ratchet disk 19 away from the ratchet disk 19 with a connecting rod 21, the connecting rod 21 is fixedly connected to an arc plate 22, the arc plate 22 is slidably matched with the housing 1, the housing 1 and the arc plate 22 are correspondingly provided with through grooves, the through grooves are rotatably connected with a control gear 23, and the arc plate 22 is provided with a tooth groove meshing with the control gear 23; a baffle is fixedly connected in the housing 1, and a reset spring 24 is fixedly connected between the baffle and the ratchet 20. The ratchet disk 19 is limited by the ratchet 20, which can prevent the worker from affecting the rotation of the turntable 12 due to shaking during the suspension process, ensure the locking effect of the limit block 7, and prevent it from loosening.

[0022] In a further optimized solution, a stopper 25 is fixedly connected in the housing 1, and the stopper 25 is located above the moving block 4. The maximum rising height of the moving block 4 is limited to prevent the rotating block 8 from loosening.

[0023] In a further optimized solution, a plurality of rotating wheels 26 are rotatably connected in the housing 1, and the rotating wheels 26 are located on both sides of the safety rope 2 and are arranged in contact with the safety rope 2 to guide the safety rope 2.

[0024] The working process of the present invention is as follows: when in use, the end of the rope 5 is fixed on the worker's safety clothing. When the worker falls during the aerial work, the worker pulls the rope 5 downward, thereby driving the moving block 4 to move downward, and then driving the rotating block 8 to rotate through the control rod 9. During the rotation process, the rotating block 8 will continuously press the arc surface with the limiting teeth on the safety rope 2, thereby cooperating with the limiting plate 3 to stabilize the limiting plate. At the same time, the downward movement process of the moving block 4 will push the connecting plate 15 to move downward, thereby causing the rack 14 to move downward, and the rack 14 drives a rotating disk 12 to rotate. Since the two rotating disks 12 are driven by gears and rotate in opposite directions, the two limiting blocks 7 are pushed to slide toward each other through the connecting rod 13 at the same time, thereby limiting the safety rope 2, realizing two-level limiting, and locking more stably. At the same time, during the rotation process of the rotating disk 12, the pawl 20 limits the ratchet disk 19, thereby preventing the rotating disk 12 from reversing, so that the worker will not affect the locking effect of the limiting block 7 due to shaking during the falling and hanging process.

[0025] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A fall arrester for high-altitude operations, characterized in that: The invention comprises a shell (1), wherein a safety rope (2) is passed through the shell (1), a limit plate (3) is fixedly connected to the shell (1), a limit assembly is installed in the shell (1) corresponding to the limit plate (3), the limit assembly and the limit plate (3) are respectively located on both sides of the safety rope (2), a moving block (4) is arranged in the shell (1), a rope (5) is installed on the moving block (4), an opening (6) is opened on the side wall of the shell (1), one end of the rope (5) away from the moving block (4) passes through the opening (6) and is connected to a worker's installation clothes; two limit blocks (7) are slidably connected in the shell (1), the two limit blocks (7) are located on both sides of the safety rope (2), a control assembly for controlling the two limit blocks (7) to move toward each other is installed in the shell (1), and the control assembly is located below the moving block (4) and slidably cooperates with the moving block (4).

2. A fall arrester for aerial work according to claim 1, characterized in that: The limit assembly comprises a rotating block (8) located in the shell (1) and rotatably connected to the shell (1); a side of the rotating block (8) close to the safety rope (2) is an arc-shaped surface; the arc line where the arc-shaped surface of the rotating block (8) is located has a radius that gradually increases from top to bottom; a limit tooth is provided on the arc-shaped surface of the rotating block (8); a control rod (9) is fixedly connected to the other side of the rotating block (8); and the ends of the two control rods (9) that are away from the moving block (4) are both rotatably connected to the moving block (4).

3. A high-altitude work fall arrester according to claim 2, characterized in that: A sliding rod (10) is provided on the side of the moving block (4) away from the rotating block (8), a sleeve (11) is slidably sleeved on the sliding rod (10), and the rope (5) is fixedly connected to the sleeve (11).

4. A fall arrester for aerial work according to claim 1, characterized in that: The control assembly comprises two rotating disks (12) located in the housing (1) and rotatably connected to the housing (1), the two rotating disks (12) being respectively located on both sides of the safety rope (2) and arranged corresponding to the limit blocks (7), a connecting column being fixedly connected to the end face side of the rotating disk (12), a connecting rod (13) being rotatably connected between the connecting column and the corresponding limit blocks (7), the two connecting rods (13) being symmetrically arranged with respect to the safety rope (2), and a connecting rod (13) being slidably connected to the safety rope (2) in the housing (1). A rack (14) is provided, the top of the rack (14) is fixedly connected to a connecting plate (15), a strip groove (16) is provided on the connecting plate (15), the bottom of the moving block (4) is fixedly connected to a connecting block (17), a roller (18) adapted to the strip groove (16) is rotatably connected to the connecting block (17), the roller (18) is located in the strip groove (16), and a tooth groove meshing with the rack (14) is provided on the peripheral side of the rotating disk (12) on the same side as the moving block (4).

5. A high-altitude work fall arrester according to claim 4, characterized in that: The other rotating disk (12) is a ratchet disk (19). The two rotating disks (12) are driven by gears and rotate in opposite directions. A ratchet pawl (20) is rotatably connected in the housing (1), and the ratchet pawl (20) is adapted to the ratchet disk (19). A connecting rod (21) is fixedly connected to the side of the ratchet pawl (20) away from the ratchet disk (19). The connecting rod (21) is fixedly connected to an arc plate (22). The arc plate (22) is slidably matched with the housing (1). The housing (1) and the arc plate (22) are correspondingly provided with through grooves. A control gear (23) is rotatably connected in the through groove. A tooth groove meshing with the control gear (23) is provided on the arc plate (22); a baffle is fixedly connected in the housing (1), and a reset spring (24) is fixedly connected between the baffle and the ratchet pawl (20).

6. A high-altitude work fall arrester according to claim 1, characterized in that: A stopper (25) is fixedly connected inside the housing (1), and the stopper (25) is located above the moving block (4).

7. A high-altitude work fall arrester according to claim 1, characterized in that: A plurality of rotating wheels (26) are rotatably connected inside the housing (1); the rotating wheels (26) are located on both sides of the safety rope (2) and are arranged in contact with the safety rope (2).

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