A retractable rescue hook based on a high-voltage electrical environment

Abstract

This utility model proposes a retractable rescue hook based on a high-voltage electric environment, belonging to the field of rescue equipment technology. It includes a support rod and an extension rod sleeved inside the support rod. An adjusting block is rotatably connected to the top of the extension rod, and a rescue hook is fixed to the upper surface of the adjusting block. A locking component for locking the adjusting block is also provided inside the extension rod. This retractable rescue hook based on a high-voltage electric environment allows for continuous adjustment of the rescue hook's length by first pulling the extension rod, and then fixing the extension rod via the adjusting block with the fixed rescue hook at its top. This is not limited to a fixed length with a fixed number of sections. Furthermore, the length can be adjusted simply by rotating the adjusting block. This not only avoids secondary injuries to rescuers due to insufficient safety distance but also prevents injury from step voltage. Moreover, it eliminates the need to disassemble multiple sections or perform cumbersome assembly steps, thus speeding up rescue operations.

Description

Technical Field

[0001] This utility model relates to a rescue hook, specifically a retractable rescue hook based on a high-voltage electric environment, belonging to the field of rescue equipment technology. Background Technology

[0002] An insulated rescue hook, also known as an emergency rescue hook or an anti-electric shock insulated life-saving hook, is a safety rescue tool specifically designed for modern live-line work, high-voltage testing, industrial production, and high-voltage equipment maintenance.

[0003] Existing insulated rescue hooks are generally of fixed length or multi-section installation. They can provide emergency rescue to people who have been electrocuted or are in poor condition, and play a role in safety protection. However, fixed-length insulated rescue hooks are gradually being replaced by multi-section insulated rescue hooks due to their length limitations. However, the fixed number of sections in multi-section insulated rescue hooks limits the range of length adjustment and cannot be flexibly adjusted according to the actual rescue situation. In addition, they require more time to assemble during use, which affects rescue efficiency.

[0004] Therefore, a retractable rescue hook based on a high-voltage electric environment is proposed here. Utility Model Content

[0005] This invention proposes a retractable rescue hook based on a high-voltage electric environment to solve the problems of existing multi-section insulated rescue hooks where each section has a fixed length, making it impossible to flexibly adjust the length of the rescue hook according to the actual rescue situation, and requiring a lot of time to assemble during use, thus affecting rescue efficiency.

[0006] This utility model is achieved through the following technical solution: a retractable rescue hook based on a high-voltage electric environment, including a support rod and an extension rod sleeved inside the support rod, an adjustment block is rotatably connected to the top of the extension rod, a rescue hook is fixed on the upper surface of the adjustment block, and a locking component for locking the adjustment block is also provided inside the extension rod.

[0007] The support rod has a storage groove on its surface, the extension rod is disposed inside the storage groove, the inner wall of the storage groove has a first sliding groove, and a first slider corresponding to the first sliding groove is fixed on the side of the extension rod. The extension rod moves inside the storage groove through the adjustment block, the first slider and the first sliding groove.

[0008] An insulating pad is also fixed to the outer periphery of the support rod.

[0009] Furthermore, a rotating rod is fixed to the lower surface of the adjusting block, and a threaded rod is fixed to the lower end of the rotating rod. A movable chamber is opened inside the extension rod, and the lower end of the threaded rod is rotatably connected to the inner wall of the movable chamber. A threaded tube is threadedly connected to the surface of the threaded rod, and a fixing rod is provided on the side of the threaded tube. A telescopic groove is opened on the side of the extension rod, and the telescopic groove is connected to the movable chamber. The fixing rod passes through the telescopic groove, and a fixing groove corresponding to the fixing rod is opened on the inner wall of the storage groove. One end of the fixing rod is clamped into the fixing groove through the threaded tube.

[0010] Furthermore, a first spring is sleeved around the outer periphery of the fixed rod. One end of the first spring is fixed to the inner wall of the telescopic groove, and the other end of the first spring is fixed to the side of the fixed rod. The end face of the fixed rod adjacent to the threaded tube is an inclined surface. A through hole is opened on the surface of the extension rod. The through hole is connected to the movable chamber, and the rotating rod passes through the through hole.

[0011] Furthermore, the threaded tube is fixed with a second slider, and the inner wall of the movable chamber is provided with a second groove corresponding to the second slider. The second slider moves inside the second groove, and the threaded tube moves inside the movable chamber through the second slider and the second groove. There are two of each of the second slider and the second groove, and they are symmetrically arranged on both sides of the threaded tube. The maximum length of the movable chamber is twice that of the threaded tube.

[0012] Furthermore, the locking assembly includes a ratchet fixed to the outer periphery of the rotating rod, a placement groove is provided on the upper end face of the extension rod, the ratchet is disposed inside the placement groove, a pawl is rotatably connected to the inner wall of the placement groove, the ratchet and the pawl cooperate with each other, a pull rod is rotatably connected to the side of the pawl, one end of the pull rod passes through the placement groove and is rotatably connected to a rotating plate.

[0013] Furthermore, the locking assembly also includes two stops fixed to the side of the extension rod, which are symmetrically arranged on both sides of the rotating plate. A second spring is also sleeved on the outer periphery of the pull rod, with one end of the second spring fixed to the side of the pull rod and the other end of the second spring fixed to the inner wall of the placement groove.

[0014] This utility model provides a retractable rescue hook based on a high-voltage electric environment, which has the following beneficial effects:

[0015] This retractable rescue hook, designed for high-voltage environments, allows for continuous length adjustment by first pulling an extension rod, then securing the rod with an adjustable block at its top that holds the rescue hook. This means the hook is not limited to a fixed length with a fixed number of sections. The length can be adjusted simply by rotating the adjustable block. This design not only prevents secondary injuries to rescuers due to insufficient safety distance but also avoids step voltage injuries. Furthermore, it eliminates the need to disassemble multiple sections or perform cumbersome assembly steps, reducing preparation time and accelerating rescue efforts.

[0016] This retractable rescue hook, designed for high-voltage environments, uses a ratchet fixed to the outer periphery of a rotating rod. A pullable pawl is located on the side of the ratchet. The rotating rod is first locked by the ratchet and pawl to prevent accidental rotation of the adjusting block due to vibration or external force during use, ensuring the stability of the rescue hook. When the rotating rod needs to be adjusted in the opposite direction, the pawl is moved away from the ratchet by the pull rod, avoiding any impact on the reverse rotation of the rotating rod. This allows operators to easily adjust the length of the extension rod and improves the flexibility of the adjusting block. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention in its extended state;

[0018] Figure 2 This is a three-dimensional structural diagram of the present invention in its contracted state;

[0019] Figure 3 This is a partial cross-sectional view of the structure of the present invention in its contracted state;

[0020] Figure 4 This is a top sectional view of the locking component of this utility model;

[0021] Figure 5 This utility model Figure 3 Enlarged structural diagram at point A;

[0022] Figure 6 This utility model Figure 3 Enlarged structural diagram at point B.

[0023] Explanation of reference numerals in the attached figures

[0024] 1. Support rod; 101. Storage slot; 102. First sliding groove; 103. Fixing groove;

[0025] 2. Extension rod; 201. Movable compartment; 202. Second slide groove; 203. Through hole; 204. Telescopic groove; 205. Placement groove; 206. First slider;

[0026] 3. Adjusting block; 301. Rotating rod; 302. Threaded rod; 303. Threaded tube; 304. Fixing rod; 305. First spring; 306. Second slider;

[0027] 4. Rescue hook;

[0028] 5. Locking assembly; 501. Ratchet; 502. Pad; 503. Pull rod; 504. Rotary plate; 505. Second spring; 506. Stop block;

[0029] 6. Insulating mat. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this application.

[0031] Please see Figures 1-6 The present invention proposes the following implementation scheme: a retractable rescue hook based on a high-voltage electric environment, including a support rod 1 and an extension rod 2 sleeved inside the support rod 1. An adjustment block 3 is rotatably connected to the top of the extension rod 2, and a rescue hook 4 is fixed on the upper surface of the adjustment block 3. A locking component 5 for locking the adjustment block 3 is also provided inside the extension rod 2. A storage groove 101 is opened on the surface of the support rod 1, and the extension rod 2 is set inside the storage groove 101. A first sliding groove 102 is opened on the inner wall of the storage groove 101. A first slider 206 corresponding to the first sliding groove 102 is fixed on the side of the extension rod 2. The extension rod 2 moves within the storage groove 101 through the adjustment block 3, the first slider 206 and the first sliding groove 102. An insulating pad 6 is also fixed on the outer periphery of the support rod 1.

[0032] Please refer to this carefully. Figure 2 , Figure 3 and Figure 5A rotating rod 301 is fixed to the lower surface of the adjusting block 3, and a threaded rod 302 is fixed to the lower end of the rotating rod 301. A movable chamber 201 is opened inside the extension rod 2. The lower end of the threaded rod 302 is rotatably connected to the inner wall of the movable chamber 201. A threaded tube 303 is threadedly connected to the surface of the threaded rod 302. A fixing rod 304 is provided on the side of the threaded tube 303. A telescopic groove 204 is opened on the side of the extension rod 2. The telescopic groove 204 is connected to the movable chamber 201. The fixing rod 304 passes through the telescopic groove 204. The inner wall of the storage groove 101 is provided with a groove for connecting the fixing rod 304 to the fixed rod 302. The fixed rod 304 is fitted into the fixed groove 103. One end of the fixed rod 304 is snapped into the fixed groove 103 through the threaded tube 303. A first spring 305 is sleeved on the outer periphery of the fixed rod 304. One end of the first spring 305 is fixed to the inner wall of the telescopic groove 204, and the other end of the first spring 305 is fixed to the side of the fixed rod 304. The end face of the fixed rod 304 adjacent to the threaded tube 303 is an inclined surface. A through hole 203 is opened on the surface of the extension rod 2. The through hole 203 is connected to the movable chamber 201. The rotating rod 301 passes through the through hole 203. The threaded tube 303 is fixed with a second slider 306. The inner wall of the movable chamber 201 is provided with a second groove 202 corresponding to the second slider 306. The second slider 306 moves inside the second groove 202. The threaded tube 303 moves inside the movable chamber 201 through the second slider 306 and the second groove 202. There are two second sliders 306 and two grooves 202, which are symmetrically arranged on both sides of the threaded tube 303. The maximum length of the movable chamber 201 is twice that of the threaded tube 303. This telescopic rescue hook based on a high-voltage electric environment first pulls the extension rod 2, and then fixes the extension rod 2 through the adjustment block 3, which is movably set at the top of the extension rod 2 and is fixed with a rescue hook 4. This enables continuous adjustment of the length of the rescue hook, so that it is not limited to a fixed length of a fixed number of sections. At the same time, the length can be adjusted by simply rotating the adjustment block 3. This not only avoids secondary injury to rescuers due to too small a safety distance, but also avoids step voltage injury to rescuers. Furthermore, it eliminates the need to disassemble multiple sections or perform cumbersome assembly steps, shortening preparation time and speeding up rescue.

[0033] Please refer to this carefully. Figure 2 , Figure 4 and Figure 6The locking assembly 5 includes a ratchet 501 fixed to the outer periphery of the rotating rod 301. A placement groove 205 is provided on the upper end face of the extension rod 2. The ratchet 501 is disposed inside the placement groove 205. A pawl 502 is rotatably connected to the inner wall of the placement groove 205. The ratchet 501 and pawl 502 cooperate. A pull rod 503 is rotatably connected to the side of the pawl 502. One end of the pull rod 503 passes through the placement groove 205 and is rotatably connected to a rotating plate 504. The locking assembly 5 also includes two stops 506 fixed to the side of the extension rod 2, symmetrically arranged on both sides of the rotating plate 504. A second spring 505 is also sleeved on the outer periphery of the pull rod 503. One end of the second spring 505 is fixed to the side of the pull rod 503. 5. The other end is fixed to the inner wall of the placement groove 205; the telescopic rescue hook based on the high voltage environment is fixed to the ratchet 501 on the outer periphery of the rotating rod 301, and a pullable pawl 502 is provided on the side of the ratchet 501. The rotating rod 301 is locked by the ratchet 501 and the pawl 502 to prevent the adjustment block 3 from rotating accidentally due to vibration or external force during use, ensuring the stability of the rescue hook 4. When it is necessary to adjust the rotating rod 301 in the opposite direction, the pawl 502 is moved by the pull rod 503 to move the pawl 502 away from the ratchet 501, so as to avoid affecting the reverse rotation of the rotating rod 301, making it convenient for the operator to adjust the length of the extension rod 2 and improving the flexibility of the adjustment block 3.

[0034] When using this invention: First, place the device in the designated position. When the length of the rescue hook 4 needs to be adjusted, the operator only needs to pull the extension rod 2 to the designated position. Then, rotate the adjusting block 3. The adjusting block 3 drives the rotating rod 301 fixed on its lower surface and the threaded rod 302 fixed at the lower end of the rotating rod 301 to rotate synchronously. The threaded rod 302 drives the threaded tube 303 to move. Since the end face of the fixed rod 304 adjacent to the threaded tube 303 is inclined, the threaded tube 303 can push the fixed rod 304 to move during the movement, so that the other end of the fixed rod 304 is engaged in the fixing groove 103, thus fixing the extension rod 2. At the same time, the rotating rod 301 can drive the ratchet 501 to rotate during the rotation. Since the ratchet 501 and the pawl 502 cooperate, after the rotating rod 301 stops rotating, the ratchet 501 and the pawl 502 can lock the rotating rod 301, preventing the adjusting block 3 from rotating accidentally during use, which would cause the position of the extension rod 2 and the rescue hook 4 to change.

[0035] When the position of extension rod 2 needs to be adjusted again, the operator only needs to pull the rotating plate 504 to move the pull rod 503. The pull rod 503 drives the pawl 502. After the pawl 502 moves away from the ratchet 501, the operator can rotate the rotating plate 504 so that the rotating plate 504 can overlap the side of the baffle to prevent the rebound force of the second spring 505 from causing the pull rod 503 to move in the opposite direction. Then the operator can rotate the adjusting block 3 in the opposite direction to move the threaded tube 303 upward, so that the threaded tube 303 moves away from the fixed rod 304. Under the reaction force of the first spring 305, the fixed rod 304 can be pushed into the telescopic groove 204, so that one end of the fixed rod 304 is disengaged from the fixed groove 103. The operator can then adjust the length of extension rod 2. After the adjustment is completed, the operator repeats the above operation to fix extension rod 2.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A retractable rescue hook based on a high-voltage electric environment, comprising a support rod (1) and an extension rod (2) sleeved inside the support rod (1), wherein an adjustment block (3) is rotatably connected to the top end of the extension rod (2), and a rescue hook (4) is fixed on the upper surface of the adjustment block (3), characterized in that: The extension rod (2) is also provided with a locking component (5) for locking the adjustment block (3); The support rod (1) has a storage groove (101) on its surface. The extension rod (2) is located inside the storage groove (101). The inner wall of the storage groove (101) has a first sliding groove (102). The side of the extension rod (2) is fixed with a first slider (206) corresponding to the first sliding groove (102). The extension rod (2) moves inside the storage groove (101) through the adjustment block (3), the first slider (206) and the first sliding groove (102). An insulating pad (6) is also fixed to the outer periphery of the support rod (1).

2. The retractable rescue hook based on a high-voltage electric environment according to claim 1, characterized in that: A rotating rod (301) is fixed on the lower surface of the adjusting block (3). A threaded rod (302) is fixed at the lower end of the rotating rod (301). An movable chamber (201) is opened inside the extension rod (2). The lower end of the threaded rod (302) is rotatably connected to the inner wall of the movable chamber (201). A threaded tube (303) is threadedly connected to the surface of the threaded rod (302). A fixing rod (304) is provided on the side of the threaded tube (303). A telescopic groove (204) is opened on the side of the extension rod (2). The telescopic groove (204) is connected to the movable chamber (201). The fixing rod (304) passes through the telescopic groove (204). A fixing groove (103) corresponding to the fixing rod (304) is opened on the inner wall of the storage groove (101). One end of the fixing rod (304) is clamped inside the fixing groove (103) through the threaded tube (303).

3. A retractable rescue hook based on a high-voltage electric environment according to claim 2, characterized in that: The fixed rod (304) is sleeved with a first spring (305) on its outer periphery. One end of the first spring (305) is fixed to the inner wall of the telescopic groove (204), and the other end of the first spring (305) is fixed to the side of the fixed rod (304). The end face of the fixed rod (304) adjacent to the threaded tube (303) is an inclined surface. The extension rod (2) has a through hole (203) on its surface. The through hole (203) is connected to the movable chamber (201). The rotating rod (301) passes through the through hole (203).

4. A retractable rescue hook based on a high-voltage electric environment according to claim 3, characterized in that: The threaded tube (303) is fixed with a second slider (306). The inner wall of the movable chamber (201) is provided with a second groove (202) corresponding to the second slider (306). The second slider (306) moves inside the second groove (202). The threaded tube (303) moves inside the movable chamber (201) through the second slider (306) and the second groove (202). There are two of each of the second slider (306) and the second groove (202), and they are symmetrically arranged on both sides of the threaded tube (303). The maximum length of the movable chamber (201) is twice that of the threaded tube (303).

5. A retractable rescue hook based on a high-voltage electric environment according to claim 2, characterized in that: The locking assembly (5) includes a ratchet (501) fixed to the outer periphery of the rotating rod (301). The upper end face of the extension rod (2) is provided with a placement groove (205). The ratchet (501) is disposed inside the placement groove (205). A pawl (502) is rotatably connected to the inner wall of the placement groove (205). The ratchet (501) and the pawl (502) cooperate with each other. A pull rod (503) is rotatably connected to the side of the pawl (502). One end of the pull rod (503) passes through the placement groove (205) and is rotatably connected to a rotating plate (504).

6. A retractable rescue hook based on a high-voltage electric environment according to claim 5, characterized in that: The locking assembly (5) also includes a stop (506) fixed to the side of the extension rod (2). There are two stops (506) and they are symmetrically arranged on both sides of the rotating plate (504). A second spring (505) is also sleeved on the outer periphery of the pull rod (503). One end of the second spring (505) is fixed to the side of the pull rod (503), and the other end of the second spring (505) is fixed to the inner wall of the placement groove (205).

Images