A hook installation clamp

Abstract

This utility model relates to the field of aerial work platform technology, specifically to a hook-over-hook installation clamp. The hook-over-hook installation clamp includes a mounting part, a rotating component, a locking component, and a buffer component. One end of the mounting part is detachably mounted to an angle steel. One end of the locking component passes through the mounting part and is locked by a nut, thus forming a support. One end of the rotating component is sleeved on the other end of the mounting part, thus forming a limiting cavity, and the other end is rotatably sleeved on the locking component. The buffer component is disposed within the limiting cavity. By setting a multi-level dynamic buffer zone between the hook-over-hook and the installation clamp connection, the speed of the hook-over-hook is gradually limited, providing a warning function and solving the problem that existing installation clamps lack effective warnings when bending.

Description

Technical Field

[0001] This utility model relates to the field of high-altitude work equipment technology, specifically to a hook installation clamp. Background Technology

[0002] In power construction and high-altitude operation equipment, the over-hook is an important component that carries steel strands and prevents them from wearing out. It is widely used in power line maintenance, cable laying and other scenarios.

[0003] However, the existing installation clamp is fastened to the angle steel at one end by a fastener. Its design must be reasonably calculated to cope with emergencies, so the end with the angle steel is strong enough. However, the connection with the hook must ensure the rotation of the hook at the bending fulcrum, and also withstand the tension of the steel strand and the load weight of the workers. Therefore, in the long-term use, deformation and stress concentration are prone to occur between the connection between the hook and the installation clamp. This may cause the hook to bend under the ultimate load, and the workers below may not be able to detect the problem in time.

[0004] In response to this, the present invention provides a hook-over-hook installation fixture, which sets up a multi-level dynamic buffer zone between the hook-over-hook and the connection of the installation fixture to gradually limit the speed of the hook-over-hook and provide a warning function, thus solving the problem that existing installation fixtures lack effective warning when bending. Utility Model Content

[0005] The technical solution of this utility model is as follows: A hook-over-hook mounting clamp includes a mounting part, a rotating part, a locking part, and a buffer part. One end of the mounting part is detachably mounted to an angle steel. One end of the locking part passes through the mounting part and is locked by a nut to form a support. One end of the rotating part is sleeved on the other end of the mounting part to form a limiting cavity, and the other end is rotatably sleeved on the locking part. The buffer part is disposed in the limiting cavity and includes a first clamping piece and a second clamping piece. The first clamping piece and the second clamping piece are both located in the limiting cavity and are respectively sleeved on the rotating part to form a first buffer zone and a second buffer zone, thereby forming a multi-level buffer.

[0006] Furthermore, the locking component includes a support rod, a washer, and a nut. The support rod passes through the mounting portion, and the washer and nut are detachably fitted onto one end of the support rod.

[0007] Furthermore, the rotating component includes a hook feeder and a limiting part. The hook feeder is rotatably mounted on the support rod, and one end of the limiting part is fixed to the hook feeder, while the other end is sleeved inside the limiting cavity.

[0008] Furthermore, the first clamp and the second clamp are rotatably located on both sides of the limiting part, and there are gaps in the radial direction between the limiting part and the first clamp and the second clamp, forming a first buffer zone; a second buffer zone is formed between the first clamp and the second clamp and the inner wall of the limiting cavity.

[0009] Furthermore, the gap width between the first buffer zones ranges from 0.5 mm to 2 mm; the gap width between the limiting portion and the second buffer zone of the limiting cavity ranges from 1 mm to 3 mm.

[0010] Furthermore, a nut is threaded onto the support rod, and the nut is used to axially position the support rod.

[0011] Furthermore, the washer is located between the nut and the mounting portion.

[0012] Furthermore, the gasket is a circular metal sheet with a diameter larger than that of the support rod but smaller than that of the nut.

[0013] The beneficial effects of this utility model are: 1. By setting a limiting cavity with a first region and a second region, combined with an embedded limiting part and a double-clamp buffer structure, flexible limiting and dynamic response of the over-hook device are achieved; the first region of the limiting cavity allows the limiting part to slide radially when the support rod bends, avoiding deformation of the connection part caused by stress concentration; the second region of the limiting cavity provides a multi-level buffer function through the gap design, gradually increasing the resistance under the gradual increase of load, effectively delaying the failure process of the over-hook device.

[0014] 2. The clearance fit design between the support rod and the mounting hole of the vertical plate allows the support rod to undergo slight bending deformation under high loads. At the same time, the adjustable connection of the nut and washer enhances the stability and bending resistance of the overall structure. The washer not only increases the contact area, but also effectively disperses the load pressure and reduces the risk of local stress concentration.

[0015] 3. The gap design between the limiting part and the clamping plate forms a first buffer zone, and the gap design between the clamping plate and the inner wall of the limiting cavity forms a second buffer zone. The step-by-step friction increase mechanism of the first and second buffer zones can issue a warning signal when the hook is subjected to the ultimate load, reminding the operator to maintain it in time and avoid the occurrence of safety accidents. Attached Figure Description

[0016] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of the hook-mounting clamp of this utility model; Figure 2 This is a partially disassembled structural diagram of the hook-loading clamp of this utility model. Figure 3 This is a partial sectional view of the mounting section and the limiting section; Figure 4 for Figure 3 Enlarged structural diagram at point A; Legend: 1. Mounting part; 2. Support rod; 3. Hook feeder; 4. Limiting part; 5. First clamping plate; 6. Second clamping plate; 7. Washer; 8. Nut. Detailed Implementation

[0018] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0019] During long-term use, deformation and stress concentration may occur between the connection between the hook and the installation clamp, which may cause the hook to bend under extreme loads, and the workers below may not be able to detect it in time.

[0020] refer to Figures 1-4 As shown, this utility model provides a hook-mounting clamp, including a mounting part 1, a rotating part, a locking part, and a buffer part. One end of the mounting part 1 is detachably mounted on an angle steel. One end of the locking part passes through the mounting part 1 and is locked by a nut 8 to form a support. One end of the rotating part is sleeved on the other end of the mounting part 1 to form a limiting cavity, and the other end is rotatably sleeved on the locking part. The buffer part is disposed in the limiting cavity and includes a first clamping piece 5 and a second clamping piece 6. The first clamping piece 5 and the second clamping piece 6 are both located in the limiting cavity and are respectively sleeved on the rotating part to form a first and a second buffer zone, thereby forming a multi-level buffer.

[0021] Specifically, the mounting part 1 consists of a horizontal plate and a vertical plate. The rotating component includes a hook 3 and a limiting part 4. The locking component includes a support rod 2, a washer 7, and a nut 8. The buffer component includes a first clamping piece 5 and a second clamping piece 6. The horizontal plate and the vertical plate are vertically arranged and are an integrated structure, forming a stable L-shaped structure. The horizontal plate has multiple positioning holes for fixing the mounting part 1 to the angle steel or beam structure with bolts or other fasteners. The vertical plate has a circular mounting hole surrounded by an annular limiting cavity. The limiting cavity is divided into a first region and a second region. The first region is located near the outside of the mounting hole, and the second region is located inside the first region. A clear boundary line is formed between the first region and the second region through machining, and the two regions have different gap designs to achieve dynamic limiting and multi-level buffering functions.

[0022] The support rod 2 is a cylindrical structure. One end is inserted into the mounting hole of the vertical plate and installed with a clearance fit between the support rod 2 and the mounting hole. The other end of the support rod 2 extends outside the mounting hole and is fixed with a hook 3 by a threaded connection or a pin connection. The support rod 2 is allowed to undergo slight bending deformation under load, which is achieved through the clearance fit between the mounting hole and the support rod 2. The support rod 2 also has an external thread section, on which a nut 8 is screwed. The nut 8 is used to axially position the support rod 2. In addition, a washer 7 is placed between the nut 8 and the vertical plate. The washer 7 is a circular metal sheet with a diameter larger than the diameter of the support rod 2 but smaller than the outer diameter of the nut 8. The function of the washer 7 is to increase the contact area and distribute the load pressure, thereby reducing the risk of local stress concentration.

[0023] The limiting part 4 is a cylindrical structure, embedded in the limiting cavity of the vertical plate, and fixedly connected to the hook 3 by bolts or welding to ensure synchronous movement. The outer diameter of the limiting part 4 is slightly smaller than the inner diameter of the limiting cavity to create a certain gap between them. The gap width between the limiting part 4 and the first area of ​​the limiting cavity ranges from 0.5mm to 2mm, allowing the limiting part 4 to slide radially when the support rod 2 bends. The gap width between the limiting part 4 and the second area of ​​the limiting cavity ranges from 1mm to 3mm, allowing the limiting part 4 to slightly warp under a large load.

[0024] The first clamping piece 5 and the second clamping piece 6 are both arc-shaped metal pieces, located on both sides of the limiting part 4, and fixed to the inner wall of the limiting cavity by screws or slots. A certain gap exists radially between the first clamping piece 5 and the second clamping piece 6 and the limiting part 4, with a width ranging from 0.2mm to 1mm, forming a first buffer zone. Simultaneously, a gap also exists between the first clamping piece 5 and the second clamping piece 6 and the inner wall of the limiting cavity, with a width ranging from 0.3mm to 1.5mm, forming a second buffer zone. The first and second buffer zones together constitute a progressively increasing resistance mechanism to delay the failure process of the hook 3.

[0025] Working principle: During actual operation, when the hook feeder 3 is subjected to the tension of the steel strand and the load of the operator, the support rod 2 may undergo slight bending deformation, causing the limiting part 4 to slide along the first area of ​​the limiting cavity. At this time, the first clamping piece 5 and the second clamping piece 6 in the first buffer zone rub against the inner wall of the limiting cavity, and the frictional force gradually increases with the displacement of the limiting part 4, thereby slowing down the movement speed of the hook feeder 3. If the load further increases, the limiting part 4 enters the second buffer zone, and the frictional force between the first clamping piece 5 and the second clamping piece 6 and the inner wall of the limiting cavity further increases, forming a step-by-step resistance increase effect. Finally, if the load exceeds the set value, the limiting part 4 abuts against the first area of ​​the limiting cavity to lock, preventing the hook feeder 3 from continuing to move.

[0026] To enable those skilled in the art to fully understand and implement this utility model, the following supplementary explanation of the specific implementation principle of this utility model is provided in conjunction with a specific application scenario.

[0027] In high-altitude power transmission line maintenance, the hook-mounting clamp is used to support steel strands and prevent wear. First, bolts are passed through the positioning holes on the horizontal plate of mounting part 1 to fix the clamp to the angle steel or beam structure. At this point, the L-shaped structure of mounting part 1 ensures overall stability through the vertical alignment of the horizontal and vertical plates, preventing the clamp from loosening or falling off due to external forces. One end of the support rod 2 is inserted into the mounting hole in the vertical plate, and a clearance fit allows the support rod 2 to undergo slight bending deformation under load. This design allows the support rod 2 to absorb some stress through elastic deformation under high loads, preventing fatigue failure at the connection point due to insufficient rigidity.

[0028] When the hook feeder 3 bears the tension of the steel strand and the load of the operator, the support rod 2 may bend slightly. At this time, the limiting part 4 slides along the first area of ​​the limiting cavity, and the first clamping piece 5 and the second clamping piece 6 in the first buffer zone rub against the inner wall of the limiting cavity. Since the gap width between the first clamping piece 5 and the second clamping piece 6 and the limiting part 4 is 0.2mm-1mm, and the gap width between the clamping piece and the inner wall of the limiting cavity is 0.3mm-1.5mm, the frictional force gradually increases with the displacement of the limiting part 4, thereby slowing down the movement speed of the hook feeder 3. This process delays the failure process of the hook feeder 3 through a step-by-step resistance increase mechanism, ensuring that it can still maintain a certain stability under extreme load.

[0029] If the load increases further, the limiting part 4 enters the second region of the limiting cavity. At this time, the friction between the first clamping piece 5 and the second clamping piece 6 and the inner wall of the limiting cavity increases significantly, forming a more obvious buffering effect. The gap width between the limiting part 4 and the second region of the limiting cavity ranges from 1mm to 3mm, allowing the limiting part 4 to slightly tilt under a large load. At the same time, the friction between the clamping pieces and the inner wall of the limiting cavity further restricts the movement of the hooker 3. Finally, when the load exceeds the set value, the limiting part 4 abuts against the first region of the limiting cavity and locks, preventing the hooker 3 from continuing to move, thereby avoiding safety hazards caused by overload.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A hook-mounting clamp, characterized in that, The device includes a mounting part, a rotating part, a locking part, and a buffer part. One end of the mounting part is detachably mounted to an angle steel. One end of the locking part passes through the mounting part and is locked by a nut to form a support. One end of the rotating part is sleeved on the other end of the mounting part to form a limiting cavity, and the other end is rotatably sleeved on the locking part. The buffer part is located in the limiting cavity and includes a first clamping piece and a second clamping piece. The first clamping piece and the second clamping piece are both located in the limiting cavity and are respectively sleeved on the rotating part to form a first buffer zone and a second buffer zone, thereby forming a multi-level buffer.

2. The hook-loading clamp according to claim 1, characterized in that, The locking component includes a support rod, a washer, and a nut. The support rod passes through the mounting portion, and the washer and nut are detachably fitted onto one end of the support rod.

3. The hook-mounting fixture according to claim 2, characterized in that, The rotating component includes a hook feeder and a limiting part. The hook feeder is rotatably mounted on the support rod. One end of the limiting part is fixed to the hook feeder, and the other end is sleeved inside the limiting cavity.

4. The hook-mounting fixture according to claim 3, characterized in that, The first clamp and the second clamp are rotatably located on both sides of the limiting part. There are gaps in the radial direction between the limiting part and the first clamp and the second clamp, forming a first buffer zone. A second buffer zone is formed between the first clamp and the second clamp and the inner wall of the limiting cavity.

5. The hook-mounting fixture according to claim 4, characterized in that, The gap width between the first buffer zones ranges from 0.5 mm to 2 mm; the gap width between the limiting part and the second buffer zone of the limiting cavity ranges from 1 mm to 3 mm.

6. The hook-mounting fixture according to claim 2, characterized in that, A nut is threaded onto the support rod, and the nut is used to axially position the support rod.

7. The hook-mounting fixture according to claim 6, characterized in that, The washer is located between the nut and the mounting portion.

8. The hook-mounting fixture according to claim 7, characterized in that, The gasket is a circular metal sheet with a diameter larger than that of the support rod but smaller than that of the nut.

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