Power plant bridge crane anti-drop hook
By embedding blocking blocks and fixing components into the hook of the bridge crane, a dual anti-detachment system of mechanical locking and friction constraint is formed, which solves the problem of hook detachment during hoisting and improves hoisting stability and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WANNENG MAANSHAN POWER GENERATION CO LTD
- Filing Date
- 2025-07-16
- Publication Date
- 2026-06-19
AI Technical Summary
During the lifting process, the wire rope of the bridge crane is prone to swaying due to factors such as wind or weight imbalance, which may cause it to come off the hook and pose a safety hazard.
The system employs a blocking block embedded in the movable groove and connected to the hook. Combined with the design of the fixing block and fastening nut, it forms a double anti-detachment system, which prevents the hook from detaching through mechanical locking and friction constraint.
It effectively prevents the hook from coming off, improves the stability and safety of hoisting, reduces the risk of hook detachment, and is suitable for hoisting heavy goods in power plants.
Smart Images
Figure CN224377464U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of crane technology, specifically to an anti-detachment hook for a power plant bridge crane. Background Technology
[0002] During power plant operation and equipment maintenance, some equipment is too large to be moved by forklifts. However, the bridge of a bridge crane spans across the workshop, warehouse, or material yard, making full use of the space under the bridge to lift materials without being obstructed by ground equipment. Therefore, the application of bridge cranes is indispensable in this scenario.
[0003] Existing cranes typically lift equipment or materials using hooks. However, during the lifting process, external factors such as wind and unbalanced equipment weight can easily cause the wire ropes of bridge cranes to sway and become unhooked, resulting in personal injury or damage to goods and posing a threat to production safety. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, this utility model provides an anti-detachment hook for a power plant bridge crane, solving the problems mentioned in the background technology.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, this utility model provides the following technical solution:
[0008] A power plant bridge crane anti-detachment hook includes a connecting block, a hook, a connecting shaft, and a mounting shaft. The hook is located inside the connecting block, and the connecting shaft is fixedly installed on the surface of the connecting block. The hook and the connecting block are connected by a mounting shaft. The end of the hook near the connecting block is fixedly installed with a mounting block. Both ends of the mounting block are rotatably mounted with swing rods. The end of the swing rod away from the mounting block is rotatably mounted with a blocking block. Movable grooves are provided on both sides of the hook portion.
[0009] Optionally, the blocking block can be embedded in the movable slot and connected to the hook, and the movable slot is adapted to the size of the blocking block.
[0010] Optionally, the blocking block passes through the movable groove and is connected to the hook. The vertical cross-section of the blocking block is arc-shaped. Both the blocking block and the movable groove are made of a rigid material. A locking element is provided between the mounting block and the blocking block to lock the position of the blocking block.
[0011] Optionally, the locking component includes a slot formed at the end of the blocking block away from the swing rod, and a sliding groove is formed at the middle of both ends of the hook portion. A fixing component is slidably installed in the sliding groove, and the fixing component is engaged with the slot.
[0012] Optionally, the fastener consists of a screw, a stop block, and a fastening nut. The stop block is fixedly installed on the top of the screw, and a fastening nut is threaded onto the end of the screw away from the stop block. The screw is adapted to the size of the slide groove and passes through the slide groove. The length of the stop block is greater than the inner diameter of the slot.
[0013] This utility model provides an anti-detachment hook for a power plant bridge crane, which has the following advantages compared with the prior art:
[0014] By using a blocking block embedded in the movable slot to block the hook notch, combined with the design of the fixing block pressing against the slot and the nut tightening, a dual anti-detachment system of "mechanical locking + friction constraint" is formed. It can not only offset the conventional risk of hooking off caused by the weight of the goods by fixing the position of the blocking block, but also increase the constraint force of the contact surface by using the fixing component to effectively resist the loosening of eccentric load caused by the shift of the center of gravity, reduce the risk of hooking off, and provide a safety protection that balances stability and anti-eccentricity for the hoisting of heavy goods in power plants. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the structure of the movable groove in this utility model;
[0017] Figure 3 This is a schematic diagram of the overall unfolded structure of this utility model;
[0018] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A;
[0019] Figure 5 This utility model Figure 1 A magnified structural diagram at point B in the middle.
[0020] In the diagram: 1. Connecting block; 2. Hook; 3. Connecting shaft; 4. Mounting shaft; 5. Mounting block; 6. Swing rod; 7. Blocking block; 8. Movable groove; 9. Slot; 10. Slide groove; 11. Fixing component; 111. Screw; 112. Stop block; 113. Fastening nut. Detailed Implementation
[0021] 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.
[0022] Please see Figure 1 and Figure 2 This utility model provides a technical solution: an anti-detachment hook for a power plant bridge crane, including a connecting block 1, a hook 2, a connecting shaft 3, and an installation shaft 4. The hook 2 is located inside the connecting block 1. The connecting shaft 3 is fixedly installed on the surface of the connecting block 1. The installation shaft 4 is installed between the hook 2 and the connecting block 1. An installation block 5 is fixedly installed at one end of the hook 2 near the connecting block 1. A swing rod 6 is rotatably installed at both ends of the installation block 5. A blocking block 7 is rotatably installed at the end of the swing rod 6 away from the installation block 5. Movable grooves 8 are provided on both sides of the hook part of the hook 2.
[0023] Furthermore, the blocking block 7 can be embedded in the movable slot 8 and connected to the hook 2, and the movable slot 8 is adapted to the size of the blocking block 7.
[0024] In this embodiment, the operator can rotate the swing rod 6 and the blocking block 7 to make the blocking block 7 embed into the movable groove 8, thereby locking the goods on the hook 2. This method mainly relies on the composite design of lever transmission and mechanical interlocking, and adopts an interlocking structure. After being embedded, it forms a tight engagement, which can effectively resist the swaying of the wire rope during hoisting.
[0025] Please see Figure 1 , Figures 3 to 5 The present invention provides a technical solution: further, the blocking block 7 passes through the movable groove 8 and is connected to the hook 2. The vertical cross section of the blocking block 7 is arc-shaped. Both the blocking block 7 and the movable groove 8 are made of a rigid material. A locking element is provided between the mounting block 5 and the blocking block 7 to lock the position of the blocking block 7.
[0026] Furthermore, the locking component includes a slot 9 formed at the end of the blocking block 7 away from the swing rod 6, and a sliding groove 10 is formed at the middle of both ends of the hook 2. A fixing component 11 is slidably installed in the sliding groove 10, and the fixing component 11 is engaged with the slot 9.
[0027] Furthermore, the fastener 11 consists of a screw 111, a stop block 112, and a fastening nut 113. The stop block 112 is fixedly installed on the top of the screw 111, and the fastening nut 113 is threadedly installed on the end of the screw 111 away from the stop block 112. The screw 111 is adapted to the size of the slide groove 10, and the screw 111 passes through the slide groove 10. The length of the stop block 112 is greater than the inner diameter of the slot 9.
[0028] In this embodiment, the operator can rotate the swing rod 6 and the blocking block 7 to allow the blocking block 7 to pass through the movable groove 8 and enter the hook 2 until it moves to the bottom of the cargo connecting rope, thus locking the cargo on the hook 2 and blocking the notch of the hook 2. In addition, combined with the design of the fixing part 11, the blocking block 112 is used to press against the slot 9, and then the fastening nut 113 is tightened to drive the blocking block 112 to contact the blocking block 7 and fasten it to the hook 2, thereby locking the outer periphery of the hook 2. By increasing the friction of the contact surface and the mechanical constraint force, the blocking block 7 is firmly locked to the hook 2, effectively offsetting the risk of loosening caused by eccentric load, thereby ensuring the reliability of anti-disengagement.
[0029] Working Principle: When using the anti-detachment hook of this power plant bridge crane, after placing the connecting rope of the cargo on the hook 2, the operator can rotate the swing rod 6 and the direction of the blocking block 7 to allow the blocking block 7 to pass through the movable groove 8 into the hook 2 until it moves under the connecting rope of the cargo, thus locking the cargo on the hook 2 and blocking the notch of the hook 2. This method can fix the position of the blocking block 7 by the weight of the cargo during the hoisting process, and also prevent the connecting rope from slipping off the notch of the hook 2 due to external factors during the hoisting process and the swaying of the crane's wire rope. It can effectively resist abnormal external force impact and prevent the cargo from falling accidentally. In addition to the anti-detachment effect, the method of opening the hook 2 is also simple and quick. It is only necessary to slide or move the blocking block 7 out of the movable groove 8. Under the premise of ensuring anti-detachment safety, it greatly improves the convenience and safety of using the hook 2, which not only meets the high-efficiency needs of frequent hoisting of heavy cargo in the power plant, but also provides reliable protection for the safety of operators and equipment.
[0030] It is worth mentioning that, considering that if the center of gravity of the goods shifts, there is a certain probability that it will affect the stability of the connection between the blocking block 7 and the hook 2, the design of the fixing part 11 is used to tighten the slot 9 by the stop block 112, and then tighten the fastening nut 113 to drive the stop block 112 to contact the blocking block 7 and fasten it to the hook 2. This locks the outer periphery of the hook 2, increases the friction of the contact surface and the mechanical constraint force, and firmly locks the blocking block 7 to the hook 2. This effectively counteracts the risk of loosening caused by eccentric load, thereby ensuring the reliability of anti-disengagement and ensuring that the crane can still operate stably when lifting goods with irregular center of gravity, improving the safety of operation and the applicability of the equipment under high-risk conditions.
[0031] The standard parts used in this embodiment can be purchased directly from the market, while the non-standard structural parts described in the specification and drawings can be processed without any doubt based on existing technical common sense. At the same time, the connection methods of each component adopt mature conventional methods in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so they will not be described in detail here.
[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A power plant bridge crane anti-drop hook, comprising a connecting block (1), a hook (2), a connecting shaft (3) and a mounting shaft (4), the hook (2) is located inside the connecting block (1), the surface of the connecting block (1) is fixedly provided with the connecting shaft (3), and the mounting shaft (4) is jointly arranged between the hook (2) and the connecting block (1), characterized in that: The hook (2) is fixedly installed with an installation block (5) at one end near the connecting block (1). Both ends of the installation block (5) are rotatably installed with swing rods (6). The end of the swing rod (6) away from the installation block (5) is rotatably installed with a blocking block (7). Movable grooves (8) are provided on both sides of the hook (2).
2. The power plant bridge crane anti-drop hitch of claim 1, wherein: The blocking block (7) can be embedded into the movable groove (8) and connected to the hook (2), and the movable groove (8) is adapted to the size of the blocking block (7).
3. The power plant bridge crane anti-drop hitch of claim 1, wherein: The blocking block (7) passes through the movable groove (8) and is connected to the hook (2). The vertical cross section of the blocking block (7) is arc-shaped. Both the blocking block (7) and the movable groove (8) are made of a hard material. A locking element is provided between the mounting block (5) and the blocking block (7) to lock the position of the blocking block (7).
4. The power plant bridge crane anti-drop hitch of claim 3, wherein: The locking component includes a slot (9) formed at the end of the blocking block (7) away from the swing rod (6), and a sliding groove (10) is formed at the middle of both ends of the hook (2). A fixing component (11) is slidably installed in the sliding groove (10), and the fixing component (11) is engaged with the slot (9).
5. The power plant bridge crane anti-drop hitch of claim 4, wherein: The fastener (11) consists of a screw (111), a stop (112), and a fastening nut (113). The stop (112) is fixedly installed on the top of the screw (111), and the fastening nut (113) is threaded on the end of the screw (111) away from the stop (112). The screw (111) is adapted to the size of the slide (10), and the screw (111) passes through the slide (10). The length of the stop (112) is greater than the inner diameter of the slot (9).