Lifting appliance protection device for crane
By setting a rotating ring, a decoupling limit rod, a card block, a button and a limit column on the spreader, as well as a piston cylinder, a first spring, an elastic spring and a shock absorbing pad, the suspension is solved in the lifting object collar. The self-locking problem and insufficient protection of goods during the major periods have achieved the convenience of lifting of spreaders and effective protection of goods.
Patent Information
- Application Number
- CN202421289203.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-06
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-06-06
AI Technical Summary
When the hoisting ring of the lifting object is large, the self-locking motion trajectory is blocked, which makes it inconvenient to trap the hoisting object in the hoisting object in the hoisting object, which poses a major safety hazard and lacks protective devices. When the wire rope breaks, it will be hung. Drop-out tools can easily cause damage to the goods.
A crane suspension protection device is designed, including a rotating ring, a releasing limit rod, a card block, a button and a limit column, through the cooperation of the piston cylinder, the first spring, an elastic spring and a shock absorbing pad. It realizes the convenience of lifting and protection of goods.
The device can hang a larger lifting ring through the combination of the rotating ring and the release and decoupling limit rod, which improves the performance. Through the setting of elastic springs and shock absorbing pads, the impact force of the goods is effectively reduced and improved Protective effect on goods.
Smart Images
Figure CN222454298U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of crane sling protection, in particular to a crane sling protection device. Background Art
[0002] A crane is a multi-action lifting machine that can lift and carry heavy objects vertically and horizontally within a certain range, and a sling is an indispensable structure in a crane. It is mainly used as a connection tool in lifting operations. The most commonly used sling is a hook, and others include lifting rings, lifting suction cups, clamps, and lifting beams. Lifting suction cups, clamps, and lifting beams can be used as special slings on cranes for a long time, or as replaceable auxiliary slings hung on hooks for temporary use. They are often used in warehouses and yards with multiple types of goods to improve work efficiency. The sling for grabbing bulk materials is generally a grab with an openable and closable jaw plate, and an electromagnetic suction cup can also be used to absorb magnetic materials such as metal chips. The slings commonly used for lifting fluid materials are barrels and hanging pots. Generally, molten steel or chemical solutions are unloaded by tilting or pulling out the bottom plug, and fluid materials such as concrete are unloaded by opening the bottom door of the hanging pot.
[0003] The existing slings are generally provided with a self-locking baffle, which locks the hook body with the baffle through a torsion spring, effectively avoiding the possibility of the hoisted object coming off the hook, and have good self-locking protection capabilities. However, the self-locking movement trajectory is often blocked due to the large hoisting object ring, which makes it inconvenient to get the hoisting object ring stuck in the sling, which will cause some lucky operators to get the ring stuck between the hook and the self-locking baffle for lifting, which poses a great safety hazard. In addition, the existing slings lack protective devices. When the wire rope breaks, the sling falls and easily causes serious bumps and damages to the goods. Therefore, a crane sling protection device is urgently needed to solve the above problems. Utility Model Content
[0004] 1. Technical issues to be resolved
[0005] In view of the deficiencies in the prior art, the utility model provides a crane sling protection device, which solves the problems raised in the above-mentioned background technology.
[0006] (II) Technical solution
[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:
[0008] A crane sling protection device comprises a sling body, wherein the upper surface of the sling body is rotatably connected with a sling ring, the inner side wall of the lower side of the sling body is rotatably connected with a rotating rod, the lower end of the rotating rod is provided with a hook body, the inner side wall of the sling body is slidably connected with a piston cylinder, the inner side wall of the piston cylinder is provided with a first spring, the inner side wall of the sling body is provided with a ventilation pipe, the outer surface of the sling body is located outside the ventilation pipe and is provided with a valve, the upper surface of the piston cylinder is fixedly connected with an elastic spring, the outer surface of the elastic spring is provided with a shock-absorbing pad, a limiting groove is provided in front of the rotating rod, a clamping groove is provided on the inner side wall of one end of the hook body, a rotating ring is rotatably connected with the outer surface of the rotating rod, a hook-release limiting rod is provided on the outer surface of the rotating ring, a clamping block is provided at the end of the hook-release limiting rod, a button is rotatably connected to the inner side wall of the front of the rotating ring through a hinge block, a limiting column is provided at the rear of the upper side of the button, and a third spring is provided at the rear of the lower side of the button.
[0009] Optionally, the upper end of the first spring abuts against the inner top wall of the sling body.
[0010] Optionally, a plurality of ventilation pipes and valves are provided and are evenly distributed in a circular array.
[0011] Optionally, a plurality of elastic spring sheets are provided and are evenly distributed in a ring array, and the shock-absorbing pad is made of rubber or sponge.
[0012] Optionally, one end of the limiting column is clamped with the inner wall of the limiting groove, and one end of the third spring is abutted against the inner wall of the rotating ring.
[0013] Optionally, a notch is provided on the outer surface of the rotating rod, and a second spring is provided on the inner side wall of the rotating ring, and one end of the second spring abuts against a limiting steel ball.
[0014] Optionally, a plurality of the slots are provided and are evenly distributed in a circular array, and the outer surface of the limiting steel ball is engaged with the inner wall of the slot.
[0015] (III) Beneficial effects
[0016] The utility model provides a crane sling protection device, which has the following beneficial effects:
[0017] 1. The crane sling protection device has the effect of facilitating the use performance of the device through the arrangement of a rotating ring, a hook-release limit rod, a block, a button and a limit column. The rotating ring and the hook-release limit rod are matched to each other, and when the hoisting object ring is hooked, the hook-release limit rod can be rotated to one side during use, so that the hanging opening at the hook body will not be blocked, and a larger hoisting object ring can be hung, thereby achieving the purpose of facilitating the improvement of practical performance.
[0018] 2. The crane sling protection device has the effect of facilitating the protection of cargoes through the arrangement of the piston cylinder, the first spring, the elastic spring and the shock-absorbing pad. Through the coordinated arrangement of the piston cylinder, the first spring, the ventilation duct and the plurality of elastic springs, during use, if the sling body falls, the elastic spring will first contact the cargoes to deform and consume part of the impact force. The shock-absorbing pad on the outer surface of the elastic spring can well reduce the hard impact on the cargoes. The upper end of the elastic spring is connected to the release and release limit rod, driving the release and release limit rod to move upward, thereby squeezing the block. The arrangement of the ventilation duct on the inner wall of the sling body can form an air damping effect, thereby effectively reducing the impact force on the cargoes, thereby achieving the purpose of facilitating the protection of the hoisted cargoes. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;
[0020] Figure 2 It is a schematic diagram of the structure of the front section of the utility model;
[0021] Figure 3 It is a schematic diagram of the structure of the side cross-section of the utility model;
[0022] Figure 4 It is a three-dimensional structural diagram of the piston cylinder and the elastic reed of the utility model;
[0023] Figure 5 For this utility model Figure 2 The structural diagram at A in the middle;
[0024] Figure 6 For this utility model Figure 2 The structural diagram at B in the middle;
[0025] Figure 7 For this utility model Figure 3 The structural diagram at C in the middle;
[0026] Figure 8 It is a structural schematic diagram of the hook body of the utility model;
[0027] Fig. 9 It is a schematic diagram of the three-dimensional structure of the rotating ring of the utility model.
[0028] In the figure: 1. sling body; 2. sling lifting ring; 3. rotating rod; 4. hook body; 5. piston cylinder; 6. first spring; 7. ventilation pipe; 8. valve; 9. notch; 10. limit groove; 11. clamping groove; 12. rotating ring; 13. second spring; 14. limit steel ball; 15. release and release limit rod; 16. clamping block; 17. button; 18. elastic spring; 19. shock-absorbing pad; 20. limit column; 21. third spring. DETAILED DESCRIPTION
[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0030] Example 1
[0031] The utility model provides a technical solution: a sling protection device for a crane, wherein the upper surface of a sling body 1 is rotatably connected with a sling ring 2, the inner side wall of the lower side of the sling body 1 is rotatably connected with a rotating rod 3, the lower end of the rotating rod 3 is provided with a hook body 4, the outer surface of the rotating rod 3 is provided with a notch 9, the notch 9 is provided with a plurality of notches and is evenly distributed in a circular array, the outer surface of a limiting steel ball 14 is clamped with the inner side wall of the notch 9, the inner side wall of the rotating ring 12 is provided with a second spring 13, one end of the second spring 13 abuts against the limiting steel ball 14, and a limiting groove is provided in front of the rotating rod 3 10. A clamping groove 11 is provided on the inner wall of one end of the hook body 4, a rotating ring 12 is rotatably connected to the outer surface of the rotating rod 3, a hook-release limiting rod 15 is provided on the outer surface of the rotating ring 12, a clamping block 16 is provided on the end of the hook-release limiting rod 15, a button 17 is rotatably connected to the inner wall of the rotating ring 12 through a hinge block, a limiting column 20 is provided on the rear of the upper side of the button 17, one end of the limiting column 20 is clamped with the inner wall of the limiting groove 10, one end of the third spring 21 is abutted against the inner wall of the rotating ring 12, and a third spring 21 is provided on the rear of the lower side of the button 17.
[0032] In order to improve practical performance, such as the attached Figures 1 to 9As shown, the present application adopts the following structure. Through the arrangement of the rotating ring 12, the unhooking limit rod 15, the block 16, the button 17 and the limit column 20, the crane sling protection device has the effect of facilitating the use of the lifting device. Through the coordinated arrangement of the rotating ring 12 and the unhooking limit rod 15, during use, when the hoisting object ring is hooked, the lower end of the button 17 can be pressed to drive the limit column 20 to disengage from the inside of the limit groove 10, and then the unhooking limit rod 15 is rotated to one side. The arrangement of the notch 9, the second spring 13 and the limit steel ball 14 can effectively improve the hand feel when rotating the rotating ring 12, but it is not possible to adjust the upper and lower positions of the rotating ring 12. When the button 17 is set to limit, the button 17 can be automatically popped up by the third spring 21 when the button 17 is released. When the locking operation is performed, when the end of the limiting column 20 moves to the limiting groove 10, it can be automatically inserted into the limiting groove 10. When the unhooking limiting rod 15 rotates to one side, it will not block the hanging opening at the hook body 4, and a larger lifting object ring can be hung. The clamping block 16 at the end of the unhooking limiting rod 15 can be inserted into the inside of the clamping groove 11 at the end of the hook body 4 when locked, so that a completely closed ring is formed between the hook body 4 and the unhooking limiting rod 15, effectively preventing the cargo from being unhooked, thereby achieving the purpose of facilitating the improvement of practical performance.
[0033] Example 2
[0034] The utility model provides a technical solution: a sling protection device for a crane, comprising a sling body 1, the inner wall of the sling body 1 is slidably connected with a piston cylinder 5, the inner wall of the piston cylinder 5 is provided with a first spring 6, the upper end of the first spring 6 abuts against the inner top wall of the sling body 1, the inner wall of the sling body 1 is provided with a ventilation pipe 7, the outer surface of the sling body 1 is provided with a valve 8 on the outside of the ventilation pipe 7, the ventilation pipe 7 and the valve 8 are both provided with a plurality of them and are evenly distributed in a ring array, the upper surface of the piston cylinder 5 is fixedly connected with an elastic spring leaf 18, the outer surface of the elastic spring leaf 18 is provided with a shock-absorbing pad 19, the elastic spring leaf 18 is provided with a plurality of them and are evenly distributed in a ring array, and the material of the shock-absorbing pad 19 is rubber or sponge.
[0035] In order to facilitate the protection of the lifted cargo, as shown in the attached Figures 1 to 9As shown, the present application adopts the following structure. Through the arrangement of the piston cylinder 5, the first spring 6, the elastic spring 18 and the shock-absorbing pad 19, the crane sling protection device has the effect of facilitating the protection of the cargo. Through the coordinated arrangement of the piston cylinder 5, the first spring 6, the ventilation pipe 7 and multiple elastic springs 18, during use, if the sling body 1 falls, the elastic spring 18 will first contact the cargo and deform to consume part of the impact force. The shock-absorbing pad 19 on the outer surface of the elastic spring 18 can well reduce the hard impact on the cargo, and the upper end of the elastic spring 18 is connected to the release and release limit rod 15, driving the release and release limit rod 15 to move upward, thereby squeezing the block 16, and the arrangement of the ventilation pipe 7 on the inner wall of the sling body 1 can form an air damping effect, thereby effectively reducing the impact force on the cargo, thereby achieving the purpose of facilitating the protection of the hoisted cargo.
[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A crane sling protection device, comprising a sling body, characterized in that: The upper surface of the sling body is rotatably connected with a sling ring, and the inner side wall of the lower side of the sling body is rotatably connected with a rotating rod, and a hook body is arranged at the lower end of the rotating rod, and the inner side wall of the sling body is slidably connected with a piston cylinder, and the inner side wall of the piston cylinder is provided with a first spring, and the inner side wall of the sling body is provided with a ventilation pipe, and the outer surface of the sling body is located on the outside of the ventilation pipe and is provided with a valve, and the upper surface of the piston cylinder is fixedly connected with an elastic spring sheet, and the outer surface of the elastic spring sheet is provided with a shock-absorbing pad, a limiting groove is provided in front of the rotating rod, and a clamping groove is provided on the inner side wall of one end of the hook body, and the outer surface of the rotating rod is rotatably connected with a rotating ring, and a hook-release limiting rod is provided on the outer surface of the rotating ring, and a clamping block is provided at the end of the hook-release limiting rod, and the inner side wall in front of the rotating ring is rotatably connected with a button through a hinge block, and a limiting column is provided at the back of the upper side of the button, and a third spring is provided at the back of the lower side of the button.
2. A crane sling protection device according to claim 1, characterized in that: The upper end of the first spring abuts against the inner top wall of the hanger body.
3. A crane sling protection device according to claim 1, characterized in that: A plurality of ventilation pipes and valves are provided and evenly distributed in a circular array.
4. A crane sling protection device according to claim 1, characterized in that: A plurality of elastic spring sheets are arranged and evenly distributed in a ring array, and the shock-absorbing pad is made of rubber or sponge.
5. A crane sling protection device according to claim 1, characterized in that: One end of the limiting column is clamped with the inner side wall of the limiting groove, and one end of the third spring is abutted against the inner side wall of the rotating ring.
6. A crane sling protection device according to claim 1, characterized in that: A notch is provided on the outer surface of the rotating rod, a second spring is provided on the inner side wall of the rotating ring, and one end of the second spring abuts against a limiting steel ball.
7. A crane sling protection device according to claim 6, characterized in that: A plurality of notches are arranged and are evenly distributed in a circular array, and the outer surface of the limiting steel ball is clamped with the inner side wall of the notch.