High-risk operation protection device for industry and trade industry

Abstract

The utility model relates to the technical field of protector, and disclose high risk operation protector of industry and trade industry, by the casing, central axis, coil spring, ratchet wheel, support axle and ratchet dog etc. are formed and have the connecting rod fixedly connected on the end face of ratchet wheel, the one end fixedly connected with the rotating block of connecting rod away from ratchet wheel, the inside of rotating block is equipped with movable cavity, the side wall fixedly connected with micro -size magnetic block of movable cavity near central axis, the inside of movable cavity away from the side wall of central axis is connected with movable block of sliding, the one end fixedly connected with the click of movable block away from micro -size magnetic block, the utility model discloses the click into the inside of card slot by centrifugal force, thereby make ratchet wheel take along with the ring synchronous quick rotation, and the ring utilizes the connecting rope to pull the ratchet pawl deflection, make the ratchet pawl can enter the ratchet wheel tooth groove fast, cause the ratchet pawl still can be clamped into the tooth groove of ratchet wheel under the condition that ratchet wheel is not pushed, improve the safety performance of the fall arrester.

Description

Technical Field

[0001] This utility model relates to the field of protective device technology, and in particular to protective devices for high-risk operations in the industrial and commercial sectors. Background Technology

[0002] In high-risk fields, especially high-altitude operations, the use of slings is indispensable. Even when workers are working on high-altitude platforms, they still need to be connected to a safety passage via slings. Therefore, fall arresters are one of the important factors in ensuring personnel safety. Fall arresters, also known as differential arresters, can quickly brake and lock falling objects within a limited distance. They are suitable for cargo hoisting, protecting the lives of ground operators and preventing damage to the hoisted workpiece. The main working principle of the fall arrester is that when the equipment is running normally, the pawl is in contact or slightly in contact with the ratchet under the action of the torsion spring, but it does not hinder the rotation of the ratchet. When the equipment accelerates abnormally due to a malfunction, the pawl will be pushed quickly by the ratchet teeth on the ratchet under the action of centrifugal force, so that the pawl is locked into the tooth groove of the ratchet. After the two are rigidly engaged, they cannot rotate relative to each other, thus achieving braking.

[0003] While existing fall arrestors can achieve rapid braking, their effectiveness in engaging the pawl depends on the high-speed rotation of the ratchet. Furthermore, the pawl is subjected to both the ratchet's force and the counterforce from the torsion spring. This means the pawl may not engage with the closest tooth, sometimes engaging after several teeth, or even failing to engage at all. This results in a delay between stall and braking. If the user is high above the ground, there is time for the fall arrestor to brake; however, if the user is low above the ground, there is a significant safety hazard. Therefore, the sensitivity of fall arrestors is a technical problem that needs to be addressed. This leads to the proposal of a high-risk work safety device for the industrial and commercial sectors. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a high-risk operation protection device for the industrial and commercial sectors. It has the advantages of enabling rapid braking in the event of a stall, shortening the braking time, and improving the safety performance of the fall arrestor, thus solving the problems mentioned in the background technology.

[0005] This utility model provides the following technical solution: a high-risk operation protection device for industrial and commercial sectors, comprising a housing for protection and installation and a steel wire rope for connecting the user. A central shaft for support is fixedly connected to the middle of the inner cavity of the housing. A coil spring for energy storage is fixedly sleeved on the outer surface of the central shaft. A ratchet for braking is fixedly connected to the end of the coil spring away from the central shaft. A support shaft for support is fixedly connected to the inner side wall of the housing. A pawl for controlling the rotation of the ratchet is rotatably sleeved on the outer surface of the support shaft via a torsion spring. A winding drum for winding the steel wire rope is fixedly connected to the end face of the ratchet. The steel wire rope is wound around the outer surface of the winding drum. A centrifugal drive device is provided on the ratchet. A rotating device is provided inside the housing.

[0006] Preferably, the centrifugal drive device includes a connecting rod for connection, the connecting rod being fixedly connected to the end face of the ratchet, and a rotating block for rotation being fixedly connected to the end of the connecting rod away from the ratchet, the rotating block being rotatably sleeved on the outer surface of the central shaft.

[0007] Preferably, the rotating block has an internal cavity for centrifugal movement. A micro-magnetic block for adsorption is fixedly connected to the side wall of the cavity near the central axis. A movable block for movement is slidably connected to the internal side wall of the cavity away from the central axis. A locking tooth for locking is fixedly connected to the end of the movable block away from the micro-magnetic block.

[0008] Preferably, the movable block is made of magnetic material, and the magnetism of the movable block is opposite to that of the micro magnetic block, and the centrifugal force of the rapidly rotating block is greater than the magnetic attraction force of the micro magnetic block on the movable block.

[0009] Preferably, the rotating device includes a fixed frame for support, the fixed frame is fixedly connected to the inner cavity side wall of the housing, and an arc-shaped receiving block for support is fixedly connected to the end of the fixed frame away from the housing. The side of the arc-shaped receiving block facing the central axis has a sliding groove for support, and a rotating ring for rotation is slidably connected inside the sliding groove. The inner ring side wall of the rotating ring has a locking groove for locking pins.

[0010] Preferably, the outer ring sidewall of the swivel is fixedly connected to a connecting rope for connecting and applying force, and the end of the connecting rope away from the swivel is fixedly connected to a guide rod for transmitting the force of the connecting rope. The guide rod is fixedly connected to the bottom surface of the pawl, and the bottom surface of the pawl is fixedly connected to a rubber block for deceleration. A rapid response device is provided on the pawl.

[0011] Preferably, the rapid response device includes a support rod for connection and a push rod for transmitting force.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This utility model, through the design of a fixed frame, an arc-shaped receiving block, a conversion mechanism, a slot, a rotating block, a movable cavity, and locking teeth, allows the fall arrestor to operate when a worker experiences a sudden, uncontrolled fall. The uncontrolled fall causes the wire rope to pull the winding drum and ratchet to rotate rapidly. During this process, the ratchet, through a connecting rod, drives the rotating block to rotate rapidly. Then, centrifugal force causes the locking teeth to enter the slot, causing the ratchet to rotate synchronously with the rotating ring. The rotating ring, through the connecting rope, pulls the pawl to deflect, allowing the pawl to quickly enter the ratchet's tooth groove. This ensures that the pawl can still engage with the ratchet's tooth groove even without being pushed by the ratchet, thus improving the safety performance of the fall arrestor.

[0014] 2. This utility model provides a rubber block on the bottom surface of the pawl. When the pawl is not yet inside the tooth groove of the ratchet, the rubber block on the pawl contacts the side wall of the ratchet as the ratchet deflects, causing friction between the rubber block and the ratchet. Since the rubber block has a high coefficient of friction, it slows down the ratchet. This reduces the impact of the potential energy generated by the weight of the falling person when the pawl engages with the ratchet, thus improving safety performance.

[0015] 3. This utility model, through the design of toothed push blocks, support rods, and push rods, allows the locking teeth to move towards the locking slots when the user experiences a stall, due to centrifugal force. At the same time, the locking teeth also move synchronously with the toothed push blocks, causing the toothed push blocks to enter the interior of the other locking slots. Since the push rod is on the moving trajectory of the toothed push blocks, the toothed push blocks will push the push rod to move, thereby causing the push rod to push the pawl to deflect through the support rod, causing the pawl to quickly engage with the nearest ratchet tooth groove, shortening the time interval between stall and braking of the fall arrestor and improving the sensitivity of the fall arrestor. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the fall arrestor of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the fall arrestor of this utility model;

[0018] Figure 3 This is a schematic diagram of the ratchet and pawl cooperation structure of the fall arrestor of this utility model;

[0019] Figure 4 This is a schematic diagram of the exploded structure of the ratchet, rotating block, rotating ring, and pawl of this utility model;

[0020] Figure 5 This is a schematic diagram of the internal structure of the rotating block of this utility model;

[0021] Figure 6 This is a schematic diagram of the bottom structure of the swivel and pawl of this utility model;

[0022] Figure 7 This is a schematic diagram of the structure of the locking teeth and toothed push block of this utility model;

[0023] Figure 8 This is a schematic diagram of the rotating block, rotating ring, and ratchet pawl of this utility model.

[0024] In the diagram: 1. Shell; 101. Fixing frame; 102. Arc-shaped receiving block; 103. Slide groove; 104. Rotary ring; 105. Slot; 2. Central shaft; 3. Coil spring; 4. Ratchet; 41. Connecting rod; 42. Rotating block; 43. Movable cavity; 44. Miniature magnet; 45. Movable block; 46. Clamping tooth; 47. Toothed push block; 5. Support shaft; 6. Pawl; 61. Guide rod; 62. Connecting rope; 63. Support rod; 64. Push rod; 65. Rubber block; 7. Winding drum; 8. Steel wire rope. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-8 This is a high-risk work safety device for industrial and commercial sectors, comprising a housing 1 for protection and installation, and a steel wire rope 8 for connecting the user. A central shaft 2 for support is fixedly connected to the center of the inner cavity of the housing 1. A coil spring 3 for energy storage is fixedly sleeved on the outer surface of the central shaft 2. During normal operation of the steel wire rope 8, the coil spring 3 stores energy, allowing it to release potential energy to rewind the released steel wire rope 8 after use. A ratchet 4 for braking is fixedly connected to the end of the coil spring 3 furthest from the central shaft 2. A support shaft 5 for support is fixedly connected to the inner wall of the housing 1. A torsion spring rotatably sleeves the outer surface of the support shaft 5. A pawl 6 is used to control the rotation of the ratchet 4. A winding drum 7 for winding the wire rope 8 is fixedly connected to the end face of the ratchet 4. The wire rope 8 is wound around the outer surface of the winding drum 7. The wire rope 8 has a fixed end and a movable end. The fixed end of the wire rope 8 is fixedly connected to the outer surface of the winding drum 7. The movable end of the wire rope 8 is connected to the user through a hook. The pawl 6 contacts the ratchet 4, but does not affect the rotation of the ratchet 4 when the ratchet 4 rotates slowly. Through the cooperation of the ratchet 4 and the pawl 6, rapid braking is achieved when the ratchet stalls to prevent the user from falling. A centrifugal drive device is provided on the ratchet 4, and a rotating device is provided inside the housing 1.

[0027] Please see Figure 4The centrifugal drive device includes a connecting rod 41 for connection. The connecting rod 41 is fixedly connected to the end face of the ratchet 4. A rotating block 42 for rotation is fixedly connected to the end of the connecting rod 41 away from the ratchet 4. The rotating block 42 is rotatably sleeved on the outer surface of the central shaft 2 to ensure that the ratchet 4 rotates synchronously and stably with the rotating block 42 through the connecting rod 41 when stalling.

[0028] Please see Figure 5 and Figure 7 The rotating block 42 has an internal movable cavity 43 for centrifugal movement. A micro magnetic block 44 for adsorption is fixedly connected to the side wall of the movable cavity 43 near the central axis 2. A movable block 45 for movement is slidably connected to the side wall of the movable cavity 43 away from the central axis 2. A locking tooth 46 for locking is fixedly connected to the end of the movable block 45 away from the micro magnetic block 44. During the rapid rotation of the rotating block 42, the centrifugal force causes the locking tooth 46 to move outward from the rotating block 42.

[0029] Please see Figure 5 The movable block 45 is made of magnetic material, and the magnetism of the movable block 45 is opposite to that of the micro magnetic block 44. The centrifugal force of the rapidly rotating block 42 is greater than the magnetic attraction force of the micro magnetic block 44 on the movable block 45. Under normal conditions without stalling, the movable block 45 is attracted by the micro magnetic block 44, so that the locking tooth 46 is retracted inside the movable cavity 43.

[0030] Please see Figure 4 The rotating device includes a fixed frame 101 for support. The fixed frame 101 is fixedly connected to the inner cavity side wall of the housing 1. An arc-shaped support block 102 for support is fixedly connected to the end of the fixed frame 101 away from the housing 1. The side of the arc-shaped support block 102 facing the central shaft 2 has a sliding groove 103 for support. A rotating ring 104 for rotation is slidably connected inside the sliding groove 103. A locking groove 105 for locking pin is opened on the inner ring side wall of the rotating ring 104. In the case of stall, the rotating block 42 carries the rotating ring 104 to rotate inside the sliding groove 103 through the cooperation of the locking teeth 46 and the locking groove 105.

[0031] Please see Figure 4 The rotating ring 104 is sleeved on the outside of the rotating block 42, and the locking teeth 46 correspond to the locking slot 105. When the rotating block 42 rotates at high speed, the centrifugal force is used to overcome the magnetic attraction of the micro magnetic block 44 to the movable block 45. At this time, the movable block 45 moves with the locking teeth 46 until the locking teeth 46 are locked into the locking slot 105.

[0032] Please see Figure 4 and Figure 6A connecting rope 62 for connecting and applying force is fixedly connected to the outer side wall of the swivel 104. A guide rod 61 for transmitting the force of the connecting rope 62 is fixedly connected to the end of the connecting rope 62 away from the swivel 104. The guide rod 61 is fixedly connected to the bottom surface of the pawl 6. When the swivel 104 rotates, it applies tension to the connecting rope 62. The connecting rope 62 transmits the force through the guide rod 61, causing the pawl 6 to deflect and engage in the tooth groove of the ratchet 4 to form a brake. A rubber block 65 for deceleration is fixedly connected to the bottom surface of the pawl 6. When stalling, the pawl 6 deflects, causing the rubber block 65 to contact the ratchet 4. The friction between the rubber block 65 and the ratchet 4 causes the ratchet 4 to decelerate. A quick-response device is provided on the pawl 6.

[0033] Please see Figures 6-8 The rapid response device includes a support rod 63 for connection and a push rod 64 for transmitting force.

[0034] Please see Figures 6-8 The support rod 63 is fixedly connected to the bottom surface of the pawl 6, and the push rod 64 is fixedly connected to the outer surface of the support rod 63. The quick-response device also includes a toothed push block 47 for driving. The toothed push block 47 is fixedly connected to the side wall of the locking tooth 46 located outside the movable cavity 43. The number of toothed push blocks 47 is two less than the locking slot 105, and the shape of the toothed push block 47 matches the shape of the locking slot 105. The end of the push rod 64 away from the support rod 63 is located on the moving trajectory of the toothed push block 47. When stalling, the movement of the locking tooth 46 moves the toothed push block 47, causing the toothed push block 47 to move towards the locking slot 105 and enter the locking slot 105. At the same time, the toothed push block 47 pushes the push rod 64, and the push rod 64 uses the support rod 63 to deflect the pawl 6, causing the pawl 6 to engage in the tooth groove of the ratchet 4.

[0035] Working Principle: When using the fall arrestor, the housing 1 is fixed to a sturdy railing or support using a hook. Then, the movable end of the steel wire rope 8 is fixed to the user's protective gear using a hook. When the user experiences a sudden fall, the rapid release of the steel wire rope 8 causes the winding drum 7 to rotate rapidly. The winding drum 7 then causes the ratchet 4 to rotate rapidly. While the pawl 6 is in contact with the ratchet 4, its rotation is not affected when the ratchet 4 is rotating slowly. However, if the ratchet 4 rotates rapidly, it will continuously contact the pawl 6, causing the pawl 6 to bounce and engage in the teeth of the ratchet 4, forming a brake. If the pawl 6 does not engage in the teeth of the ratchet 4 in time, the rapid rotation of the ratchet 4 causes the rotating block 42 to rotate synchronously via the connecting rod 41. The centrifugal force of the rotating block 42 causes the movable block 45 to move against the magnetic attraction of the micro-magnetic block 44. The movable block 45, along with the locking teeth 4... The movement of the pawl 46 causes the pawl 46 to engage in the slot 105. Then, the rotating block 42 rotates synchronously with the rotating ring 104. The rotating ring 104 uses the connecting rope 62 to pull the pawl 6, causing it to engage in the tooth groove of the ratchet 4. Simultaneously, the deflection of the pawl 6 also causes the rubber block 65 to deflect synchronously, bringing it into contact with the ratchet 4. The friction between the rubber block 65 and the ratchet 4 causes the ratchet 4 to decelerate. As the pawl 46 moves, it also moves synchronously with the toothed push block 47, causing the toothed push block 47 to enter the remaining slots 105. Since the push rod 64 is on the trajectory of the toothed push block 47, the toothed push block 47 pushes the push rod 64, which in turn uses the support rod 63 to deflect the pawl 6. This allows the pawl 6 to quickly engage in the nearest ratchet 4 tooth groove after stalling, improving the sensitivity of the fall arrestor. Multiple braking mechanisms also significantly enhance the safety performance of the fall arrestor.

Claims

1. A high-risk operation protection device for industrial and commercial sectors, comprising a housing (1) for protection and installation and a wire rope (8) for connecting the user, characterized in that: A central shaft (2) for support is fixedly connected to the middle of the inner cavity of the housing (1). A coil spring (3) for energy storage is fixedly sleeved on the outer surface of the central shaft (2). A ratchet (4) for braking is fixedly connected to the end of the coil spring (3) away from the central shaft (2). A support shaft (5) for support is fixedly connected to the inner side wall of the housing (1). A pawl (6) for controlling the rotation of the ratchet (4) is rotatably sleeved on the outer surface of the support shaft (5) through a torsion spring. A winding drum (7) for winding the wire rope (8) is fixedly connected to the end face of the ratchet (4). The wire rope (8) is wound around the outer surface of the winding drum (7). A centrifugal drive device is provided on the ratchet (4). A rotating device is provided inside the housing (1).

2. The high-risk operation protection device for industrial and commercial sectors according to claim 1, characterized in that: The centrifugal drive device includes a connecting rod (41) for connection, the connecting rod (41) is fixedly connected to the end face of the ratchet (4), and a rotating block (42) for rotation is fixedly connected to the end of the connecting rod (41) away from the ratchet (4), the rotating block (42) is rotatably sleeved on the outer surface of the central shaft (2).

3. The high-risk operation protection device for industrial and commercial sectors according to claim 2, characterized in that: The rotating block (42) has an internal cavity (43) for centrifugal movement. A micro magnetic block (44) for adsorption is fixedly connected to the side wall of the cavity (43) near the central axis (2). A movable block (45) for movement is slidably connected to the side wall of the cavity (43) away from the central axis (2). A locking tooth (46) for locking is fixedly connected to one end of the movable block (45) away from the micro magnetic block (44).

4. The high-risk operation protection device for industrial and commercial sectors according to claim 3, characterized in that: The movable block (45) is made of magnetic material, and the magnetism of the movable block (45) is opposite to that of the micro magnetic block (44). The centrifugal force of the rapidly rotating block (42) is greater than the magnetic attraction force of the micro magnetic block (44) on the movable block (45).

5. The high-risk operation protection device for industrial and commercial sectors according to claim 4, characterized in that: The rotating device includes a fixed frame (101) for support, which is fixedly connected to the inner cavity side wall of the housing (1). An arc-shaped support block (102) for support is fixedly connected to one end of the fixed frame (101) away from the housing (1). The arc-shaped support block (102) has a sliding groove (103) for support on the side facing the central axis (2). A rotating ring (104) for rotation is slidably connected inside the sliding groove (103). A locking groove (105) for locking pin is opened on the inner ring side wall of the rotating ring (104).

6. The high-risk operation protection device for industrial and commercial sectors according to claim 5, characterized in that: The outer ring sidewall of the swivel (104) is fixedly connected to a connecting rope (62) for connecting and applying force. The end of the connecting rope (62) away from the swivel (104) is fixedly connected to a guide rod (61) for transmitting the force of the connecting rope (62). The guide rod (61) is fixedly connected to the bottom surface of the pawl (6). The bottom surface of the pawl (6) is fixedly connected to a rubber block (65) for deceleration. A rapid response device is provided on the pawl (6).

7. The high-risk operation protection device for industrial and commercial sectors according to claim 6, characterized in that: The rapid response device includes a support rod (63) for connection and a push rod (64) for transmitting force.

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