Lifting hook rope breakage protection device for tower crane
The tower crane hook protection device addresses the challenge of rope rupture by using a U-shaped board and C-shaped clamping blocks with a weight ball to pivot and secure the rope, ensuring safety by preventing collapse.
Patent Information
- Application Number
- CN202422226814.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-09-11
AI Technical Summary
The wire rope of the tower crane hook is prone to break during long-term use, causing the hook and heavy objects to fall. The existing artificial naked eye detection is difficult to effectively prevent such accidents.
A hook and rope breaking protection device for tower cranes is designed, including a U-shaped support plate, a C-shaped clamping block and a counterweight ball. The gravity of the counterweight ball drives the C-shaped clamping block to rotate, clamp the broken wire rope to prevent falling.
It realizes automatic clamping and positioning when the wire rope is disconnected, improves the safety and reliability of the use of the tower crane, and prevents the hook and heavy objects from falling.
Smart Images
Figure CN223102591U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of tower cranes, and particularly relates to a hook rope-breaking protection device for a tower crane. Background Art
[0002] A tower crane is a common structure for lifting and transferring objects. Its hook is an important component of the tower crane. During long-term on-site use, it is necessary to conduct safety inspections on the steel wire rope of the hook. Because in actual application, the steel wire rope of the hook is prone to breakage after long-term use, which may cause the hook and the heavy object to fall. However, due to the complex internal stress of the steel wire rope structure, the limitation of simple manual visual inspection is limited. Therefore, designing a protection structure for hook rope breakage is a technical problem that needs to be solved by those skilled in the art. Summary of the Utility Model
[0003] The purpose of the utility model is to provide a hook rope-breaking protection device for a tower crane with reasonable structure settings and conducive to improving the use safety.
[0004] The technical solution for achieving the purpose of the utility model is a hook rope-breaking protection device for a tower crane, including a protection structure connected to the hook. A hook pulley is arranged on the protection structure, and a steel wire rope is arranged on the hook pulley. The protection structure includes a U-shaped support plate, at least one C-shaped clamping block, a counterweight ball, and a shaft rod;
[0005] The shaft rod is fixed in the middle of the U-shaped support plate, and the hook pulley is arranged on the shaft rod through a bearing;
[0006] A convex shaft is fixed in the middle of the C-shaped clamping block;
[0007] Shaft holes are arranged on the U-shaped support plate, and the convex shaft is rotatably connected in the shaft holes;
[0008] The counterweight ball is fixed in the middle of the connection line of the convex shafts on the C-shaped clamping block through a support rod;
[0009] The C-shaped clamping block is located on the edge of the hook pulley, and the C-shaped clamping block is in balance under the gravity of the counterweight ball;
[0010] When one end of the steel wire rope is disconnected, the U-shaped support plate tilts, and the counterweight ball drives the C-shaped clamping block to rotate around the convex shaft under the action of gravity, and makes one end press against the hook pulley and cooperate with the hook pulley to clamp and position the steel wire rope.
[0011] Further preferably: Anti-slip convex teeth are fixed at both ends of the C-shaped clamping block.
[0012] Further preferably, a strip-shaped groove is provided on the bottom surface of the U-shaped support plate, the counterweight ball is located below the U-shaped support plate, and the support rod is located in the strip-shaped groove.
[0013] Further preferably, the C-shaped clamping block is a stainless steel structure.
[0014] Further preferably, there are two C-shaped clamping blocks, and the two C-shaped clamping blocks are located on both sides of the vertical center line of the hook pulley.
[0015] Further preferably, the width of the C-shaped clamping block matches the width of the wire groove of the hook pulley.
[0016] The utility model has positive effects: The structure of the utility model is reasonably arranged. With the C-shaped clamping block and the counterweight ball provided, when in normal use, since the U-shaped support plate is vertically downward under the action of the hook, and the counterweight ball is also vertically downward at this time, the C-shaped clamping block is in a balanced state. The edge of the C-shaped clamping block is close to the hook pulley but does not press on the hook pulley. When one end of the steel wire rope is disconnected, due to the loss of balance of the forces at both ends of the U-shaped support plate, the U-shaped support plate tilts. At this time, the counterweight ball drives the C-shaped clamping block to rotate around the convex shaft through the support rod, and makes one end of the C-shaped clamping block snap into the hook pulley, and cooperates with the hook pulley to complete the clamping and positioning of the steel wire rope, realizing anti-falling protection, improving the use safety, and having strong usability and good practicality. Description of the Drawings
[0017] In order to make the content of the utility model easier to be clearly understood, the following further details the utility model according to specific embodiments in conjunction with the drawings, where:
[0018] Figure 1 is a schematic structural diagram of the utility model;
[0019] Figure 2 is a schematic structural diagram of the C-shaped clamping block and the counterweight ball in the utility model;
[0020] Figure 3 is a schematic structural diagram when one end of the steel wire rope in the utility model is disconnected.
[0021] Reference numerals: hook 1, protection structure 2, U-shaped support plate 21, C-shaped clamping block 22, counterweight ball 23, shaft rod 24, hook pulley 3, steel wire rope 4, convex shaft 5, shaft hole 6, anti-slip convex teeth 7, strip-shaped groove 8, support rod 9. Detailed Embodiments
[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
[0023] Embodiment
[0024] See Figures 1 to 3 As shown, a wire rope breaking protection device for a tower crane hook includes a protection structure 2 connected to the hook 1. A hook pulley 3 is provided on the protection structure, and a wire rope 4 is provided on the hook pulley. In this embodiment, the hook is at the bottom of the vertical center line of the hook pulley, and the hook, the hook pulley, and the wire rope are all conventional structures of the prior art, so they are not described in detail.
[0025] In actual application, the protection structure includes a U-shaped support plate 21, at least one C-shaped clamping block 22, a counterweight ball 23, and a shaft rod 24. In this embodiment, the C-shaped clamping block is a stainless steel structure. There are two C-shaped clamping blocks, and the two C-shaped clamping blocks are on both sides of the vertical center line of the hook pulley. The width of the C-shaped clamping block matches the width of the wire groove of the hook pulley, so that when the C-shaped clamping block is tilted, it can abut against the wire rope. During installation, the shaft rod is fixed in the middle of the U-shaped support plate, and the hook pulley is arranged on the shaft rod through a bearing. At the same time, a convex shaft 5 is fixed in the middle of the C-shaped clamping block. A shaft hole 6 is provided on the U-shaped support plate, and the convex shaft is rotatably connected in the shaft hole. The counterweight ball is fixed in the middle of the connection line of the convex shafts on the C-shaped clamping block through a support rod 9. The C-shaped clamping block is on the edge of the hook pulley, and the C-shaped clamping block is in balance under the gravity of the counterweight ball. And, in actual application, when one end of the wire rope is disconnected, the U-shaped support plate tilts, and the counterweight ball drives the C-shaped clamping block to rotate around the convex shaft under the action of gravity, and makes one end abut against the hook pulley and cooperates with the hook pulley to clamp and position the wire rope.
[0026] In order to improve the stability and reliability of clamping, anti-slip convex teeth 7 are fixed at both ends of the C-shaped clamping block. A strip-shaped groove 8 is provided on the bottom surface of the U-shaped support plate. The counterweight ball is below the U-shaped support plate, and the support rod is in the strip-shaped groove. Through the above structure, the support rod can move within a certain range, so as to drive the C-shaped clamping block to rotate and complete the clamping and positioning. In actual application, the top end of the support rod is welded or fixed to the C-shaped support plate by screws, so that the support rod can drive the C-shaped clamping block to act when rotating.
[0027] The utility model has positive effects: the structure of the utility model is reasonably arranged, with a C-shaped clamping block cooperating with a counterweight ball. When in normal use, since the U-shaped support plate is vertically downward under the action of the hook, and the counterweight ball is also vertically downward at this time, the C-shaped clamping block is in a balanced state, and the edge of the C-shaped clamping block is close to the hook pulley but does not press against the hook pulley. When one end of the steel wire rope is disconnected, due to the imbalance of the forces at both ends of the U-shaped support plate, the U-shaped support plate tilts. At this time, the counterweight ball will drive the C-shaped clamping block to rotate around the convex shaft through the support rod, and make one end of the C-shaped clamping block snap into the hook pulley, and cooperate with the hook pulley to complete the clamping and positioning of the steel wire rope, realizing anti-fall protection, improving the use safety, and having strong usability and good practicality.
[0028] The standard parts used in this embodiment can be directly purchased from the market. For the non-standard structural components described in the instruction manual, they can also be directly processed without any doubt according to the existing technical knowledge. At the same time, the connection methods of each component adopt the mature conventional means in the existing technology, and the machines, parts and equipment all adopt the conventional models in the existing technology, so no specific description will be made here.
[0029] Obviously, the above-mentioned embodiments of the present utility model are only examples for clearly explaining the present utility model, rather than limiting the implementation manners of the present utility model. For those of ordinary skill in the art, other different forms of changes or variations can be made on the basis of the above description. It is not necessary and impossible to enumerate all the implementation manners here. And these obvious changes or variations derived from the essence of the present utility model still belong to the protection scope of the present utility model.
Claims
1. A rope-breaking protection device for a tower crane hook, comprising a protection structure connected to the hook, a hook pulley is provided on the protection structure, and a steel wire rope is provided on the hook pulley, characterized in that: The protection structure includes a U-shaped support plate, at least one C-shaped clamping block, a counterweight ball, and a shaft rod; The shaft rod is fixed in the middle of the U-shaped support plate, and the hook pulley is arranged on the shaft rod through a bearing; A convex shaft is fixed in the middle of the C-shaped clamping block; Shaft holes are provided on the U-shaped support plate, and the convex shaft is rotatably connected in the shaft holes; The counterweight ball is fixed in the middle of the connection line of the convex shafts on the C-shaped clamping block through a support rod; The C-shaped clamping block is located on the edge of the hook pulley, and the C-shaped clamping block is in balance under the gravity of the counterweight ball; When one end of the steel wire rope is disconnected, the U-shaped support plate tilts, and the counterweight ball drives the C-shaped clamping block to rotate around the convex shaft under the action of gravity, and makes one end press against the hook pulley and cooperate with the hook pulley to clamp and position the steel wire rope.
2. The anti-falling device for the broken rope of the lifting hook used in the tower crane according to claim 1, wherein: Anti-slip convex teeth are fixed at both ends of the C-shaped clamping block.
3. The anti-falling device for the broken rope of the lifting hook used in the tower crane according to claim 2, characterized in that: A strip-shaped groove is provided on the bottom surface of the U-shaped support plate. The counterweight ball is located below the U-shaped support plate, and the support rod is located in the strip-shaped groove.
4. The anti - rope - breaking protection device for the lifting hook of a tower crane according to claim 3, characterized in that: The C-shaped clamping block is a stainless steel structure.
5. The anti-falling device for the hook of a tower crane according to claim 1, characterized in that: There are two C-shaped clamping blocks, and the two C-shaped clamping blocks are located on both sides of the vertical center line of the hook pulley.
6. The hook rope-breaking protection device for tower crane according to claim 1, wherein: The width of the C-shaped clamping block matches the width of the wire groove of the hook pulley.