Crane buffer protection device
By setting the stress ring, slider, spring and buffer cylinder in the crane buffer protection device, the problem of crane sling and shaking during lifting is solved, effectively hindering and cushioning of the sling swing and reducing the cargo Risk of fall and maintenance costs, improving safety.
Patent Information
- Application Number
- CN202420173547.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-24
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-01-24
AI Technical Summary
During the lifting process, existing cranes sway and shake due to the flexible structure of the sling, which increases the risk of cargo falling, wears slings and hooks, and increases maintenance costs and engineering risks.
Design a crane buffer protection device, by setting a force ring, slider, spring and buffer cylinder, the spring buffer is driven by the ring structure of the force ring and the sliding movement of the slider, and the force is blocked by the pneumatic pressure of the buffer cylinder. The swing of the ring can hinder and buffer the swing of the sling.
Effectively prevent the swing of the sling from being too large, reduce the risk of cargo falling, reduce the wear of slings and hooks, reduce maintenance costs and engineering risks, and improve the safety of cargo and lifting sites.
Smart Images
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Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cranes, in particular to a buffer protection device for cranes. Background Art
[0002] A crane is a mechanical device used to lift and move heavy objects, commonly used in industry and construction. A crane is usually composed of a crane arm, a crane tower, a crane hook, a crane motor, a console, wheels, a bracket and a counterweight. A crane can lift and move goods through an electric or hydraulic system, which has the advantages of improving work efficiency and reducing manual labor.
[0003] When the crane lifts the cargo, the operator starts the crane through the console or remote control, moves its arm and hook above the cargo, connects the hook to the cargo, starts the crane motor, lifts the cargo to the specified height, and ensures that the cargo is lifted smoothly to avoid swaying and shaking.
[0004] However, the existing cranes still have the following problems during operation: First, during the lifting process of the cargo, since the sling adopts a flexible structure, it is easy to swing and shake during the lifting process, which will cause the cargo to lose balance during the lifting process, thereby increasing the risk of cargo falling and causing serious harm to surrounding personnel and equipment; in addition, the swinging and shaking will also increase the wear of the sling and hook, reducing their service life, thereby increasing maintenance costs and risks; in addition, the swinging and shaking may also affect the surrounding environment, such as possibly damaging buildings or facilities, increasing the risks and costs of the project. Therefore, it is necessary to propose a crane buffer protection device to buffer the sling during the lifting process. Summary of the invention
[0005] The purpose of the utility model is to provide a crane buffer protection device to solve the problems raised in the above background technology.
[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:
[0007] A crane buffer protection device comprises a crane body; a mounting frame is fixedly connected to the boom end of the crane body, a protection frame is fixedly connected to the bottom of the mounting frame, sliding grooves are provided around the inner wall of the protection frame, sliding rods are fixedly connected between the inner walls of the sliding grooves, the outer sides of the sliding rods are slidably connected to sliders, the outer sides of the sliders are slidably connected to the inner walls of the sliding grooves, springs are sleeved on the outer sides of the sliding rods and on both sides of the sliders, a cross bar is slidably connected to one side of the slider, a connecting rod is fixedly connected to one end of the cross bar, a force ring is fixedly connected between the top ends of the connecting rods, and a hook and a sling of the crane body extend to the bottom of the force ring through the central position of the force ring.
[0008] By adopting the above technical solution, a force ring is set. When the sling swings greatly during lifting, the force ring of the circular ring structure is acted on. Swinging in any direction will squeeze the force ring and drive the cross bar to move through the connecting frame. The force is decomposed into two directions. The force in one direction drives the slider to move through the connecting rod and the cross bar, so that the spring is squeezed for buffering. During the movement of the slider, the limit block is driven to slide relative to the limit groove. Because the two have been frosted, there is a large friction resistance, thereby achieving the purpose of hindering and buffering the swing of the sling.
[0009] A further improvement of the technical solution of the utility model is that connecting grooves are provided on all sides of the protection frame, a connecting frame is fixedly connected to a side away from the slider, a buffer cylinder is fixedly connected to a side away from the connecting frame, a piston plate is slidably connected between the inner walls of the buffer cylinder, an end of the cross bar that is away from the connecting groove extends to the interior of the buffer cylinder through the connecting groove and is fixedly connected to one side of the piston plate, and an air release pipe is provided on one side of the buffer cylinder.
[0010] By adopting the above technical solution, the stress ring will be squeezed and push the piston plate to slide in the buffer cylinder through the connecting rod and the cross rod, wherein the stress side pushes the piston plate to move deeper into the buffer cylinder through the cross rod, so that positive pressure is generated inside the buffer cylinder. However, the diameter of the air relief pipe is small and the pressure relief process is slow, so the movement of the stress ring will be hindered under the action of positive pressure, while negative pressure will be generated on the other side and also hinder the stress ring.
[0011] A further improvement of the technical solution of the utility model is that the force-bearing ring is set as a circular ring structure.
[0012] The adoption of the technical solution makes it possible to withstand the swing of the sling in any direction, and thus to provide comprehensive buffering protection for the swing in all directions.
[0013] A further improvement of the technical solution of the utility model is that: the top and the bottom of the protection frame are both provided with limit grooves, the top and the bottom of the sliding block are both fixedly connected to the limit blocks, and the outer side of the limit blocks is slidably connected to the limit grooves.
[0014] By adopting the above technical solution, the limiting block and the limiting groove can be used to limit the sliding of the slider to increase the stability of the slider on the one hand, and can also generate a reaction obstacle through the friction between the two on the other hand.
[0015] A further improvement of the technical solution of the utility model is that the outer side of the limiting block and the inner wall of the limiting groove are both frosted.
[0016] By adopting the above technical solution, when the limiting block slides relative to the limiting groove, there is a large friction resistance because both have been frosted, which will hinder the relative sliding of the two.
[0017] A further improvement of the technical solution of the utility model is that a reinforcing plate is symmetrically fixedly connected between the mounting frame and the protection frame.
[0018] By adopting the above technical solution, a reinforcing plate is arranged between the mounting frame and the protection frame, so that the structure of the protection frame is made more stable, so as to prevent the protection frame from breaking when the force ring is subjected to force for buffering protection, thereby improving the safety of the device.
[0019] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:
[0020] 1. The utility model provides a buffer protection device for a crane. By arranging a stress ring, when the swing amplitude of the sling is large during the lifting process, it acts on the stress ring of the circular ring structure. The swing in any direction will squeeze the stress ring and drive the cross bar to move through the connecting frame. The force is decomposed into two directions. The force in one direction drives the slider to move through the connecting rod and the cross bar, so that the spring is squeezed for buffering. During the movement of the slider, the limit block is driven to slide relative to the limit groove. Because the two have been frosted, there is a large friction resistance, so as to achieve the obstruction and buffering of the swing of the sling, so as to prevent the safety hazard caused by the excessive swing amplitude, so as to prevent the damage to the goods caused by the excessive swing amplitude of the sling, which greatly protects the safety of the goods and protects the safety of the lifting site at the same time.
[0021] 2. The utility model provides a crane buffer protection device. By setting a buffer cylinder, the force ring will be squeezed and push the piston plate to slide in the buffer cylinder through the connecting rod and the cross bar. The force-bearing side pushes the piston plate to move deep into the buffer cylinder through the cross bar, so that positive pressure is generated inside the buffer cylinder. However, the diameter of the air release pipe is small and the pressure release process is slow, so the movement of the force ring is hindered under the action of positive pressure, while the other side pulls the piston plate to move toward the outlet position of the buffer cylinder through the cross bar, so that negative pressure is generated inside the buffer cylinder, and air is taken in through the air release pipe with a smaller diameter, which also hinders the movement of the force ring. Then, the air pressure can be used to buffer the force ring, so as to cooperate with the spring to realize the function of the damper.
[0022] 3. The utility model provides a buffer protection device for a crane. By setting a limit block and a limit groove, the two can be used to generate a large friction force through frosting to hinder the movement of the force ring, thereby further limiting the sling that swings too much and greatly improving the safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The present invention will be further described below in conjunction with the accompanying drawings.
[0024] Figure 1 It is a schematic diagram of the structure of the utility model from the first perspective as a whole;
[0025] Figure 2It is a schematic diagram of the structure of the utility model as a whole from a second viewing angle;
[0026] Figure 3 This is one of the structural schematic diagrams of the protection frame and its external mounting structure of the utility model;
[0027] Figure 4 This is the second structural schematic diagram of the protection frame and its external mounting structure of the utility model;
[0028] Figure 5 This is a schematic diagram of the internal structure of the buffer cylinder of the utility model;
[0029] In the figure: 1. Crane body; 2. Mounting frame; 3. Protection frame; 4. Slide groove; 5. Slide rod; 6. Sliding block; 7. Spring; 8. Cross bar; 9. Connecting rod; 10. Force ring; 11. Limiting groove; 12. Limiting block; 13. Connecting frame; 14. Buffer cylinder; 15. Piston plate; 16. Vent pipe; 17. Connecting groove. DETAILED DESCRIPTION
[0030] The present invention is further described in detail below in conjunction with the embodiments:
[0031] Example 1
[0032] like Figure 1 and Figure 3 As shown, the utility model provides a crane buffer protection device, including a crane body 1; a mounting frame 2 is fixedly connected to the arm end of the crane body 1, a protection frame 3 is fixedly connected to the bottom of the mounting frame 2, slide grooves 4 are opened around the inner wall of the protection frame 3, slide rods 5 are fixedly connected between the inner walls of the slide grooves 4, and sliders 6 are slidably connected to the outer sides of the slide rods 5. The outer sides of the sliders 6 are slidably connected to the inner walls of the slide grooves 4, and springs 7 are sleeved on the outer sides of the slide rods 5 and on both sides of the sliders 6. A cross bar 8 is slidably connected to one side of the slider 6, and a connecting rod 9 is fixedly connected to one end of the cross bar 8. A force ring 10 is fixedly connected between the top ends of the connecting rods 9, and the hook and sling of the crane body 1 extend to the bottom of the force ring 10 through the central position of the force ring 10.
[0033] In this embodiment, a stress ring 10 is provided. When the sling swings with a large amplitude during the lifting process, the stress ring 10 of the circular ring structure is acted on. The swing in any direction will squeeze the stress ring 10 and drive the cross bar 8 to move through the connecting frame 13. The force is decomposed into two directions. The force in one direction drives the slider 6 to move through the connecting rod 9 and the cross bar 8, so that the spring 7 is squeezed for buffering. During the movement of the slider 6, the limit block 12 is driven to slide relative to the limit groove 11. Because the two have been frosted, there is a large friction resistance, so as to achieve the obstruction and buffering of the swing of the sling to prevent the safety hazard caused by the excessive swing amplitude, so as to prevent the damage to the cargo caused by the excessive swing amplitude of the sling, thereby greatly protecting the safety of the cargo and protecting the safety of the lifting site.
[0034] Example 2
[0035] like Figure 3 and Figure 5 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, connecting grooves 17 are opened on all four sides of the protection frame 3, the side away from the slider 6 is fixedly connected to the connecting frame 13, the side away from the connecting frame 13 is fixedly connected to the buffer cylinder 14, the inner walls of the buffer cylinder 14 are slidably connected with a piston plate 15, the ends away from the cross bar 8 extend to the interior of the buffer cylinder 14 through the connecting groove 17 and are fixedly connected to one side of the piston plate 15, and a vent pipe 16 is provided on one side of the buffer cylinder 14.
[0036] In this embodiment, the stress ring 10 is squeezed and pushes the piston plate 15 to slide in the buffer cylinder 14 through the connecting rod 9 and the cross bar 8. The stress-bearing side pushes the piston plate 15 to move deeper into the buffer cylinder 14 through the cross bar 8, so that a positive pressure is generated inside the buffer cylinder 14. However, the diameter of the air vent pipe 16 is small and the pressure relief process is slow, so the movement of the stress ring 10 is hindered under the action of the positive pressure. On the other side, the piston plate 15 is pulled toward the outlet position of the buffer cylinder 14 through the cross bar 8, so that a negative pressure is generated inside the buffer cylinder 14, and air is taken in through the air vent pipe 16 with a smaller diameter, which also hinders the movement of the stress ring 10.
[0037] like Figure 3 and Figure 4 As shown, preferably, the stress ring 10 is configured as a circular ring structure.
[0038] In this embodiment, the sling can withstand the swing in any direction, and thus can provide comprehensive buffering protection for the swing in all directions.
[0039] like Figure 3 and Figure 4As shown, preferably, the top and bottom of the protection frame 3 are provided with a limit groove 11, the top and bottom of the slider 6 are fixedly connected to the limit block 12, and the outer side of the limit block 12 is slidably connected to the limit groove 11.
[0040] In this embodiment, the limiting block 12 and the limiting groove 11 can be used to limit the sliding of the slider 6 to increase the stability of the slider 6 on the one hand, and can also generate a reaction obstacle through the friction between the two on the other hand.
[0041] Preferably, the outer side of the limiting block 12 and the inner wall of the limiting groove 11 are both frosted.
[0042] In this embodiment, when the limiting block 12 slides relative to the limiting groove 11, there is a large friction resistance because both have been frosted, which will hinder the relative sliding of the two.
[0043] like Figure 3 and Figure 4 As shown, preferably, a reinforcing plate is symmetrically fixedly connected between the mounting frame 2 and the protection frame 3 .
[0044] In this embodiment, a reinforcing plate is provided between the mounting frame 2 and the protection frame 3 to make the structure of the protection frame 3 more stable, so as to prevent the protection frame 3 from breaking when the force ring 10 is subjected to force for buffering protection, thereby improving the safety of the device.
[0045] The following is a detailed description of the working principle of the crane buffer protection device.
[0046] like Figure 1-5As shown, when the crane is lifting, the sling is released from the central position of the force ring 10, and the cargo is lifted by the hook at the bottom of the sling. During the cargo lifting process, the hook and the sling will swing along with the movement of the crane body 1, the turning of the crane body 1 and the rising of the cargo. When the swing amplitude is large, because the force ring 10 is set as a circular ring structure, the swing of the sling in any direction will squeeze the force ring 10, and drive the cross bar 8 to move through the connecting frame 13, and the force is decomposed into two directions. On the one hand, the slider 6 is driven to move through the connecting rod 9 and the cross bar 8, so that the spring 7 is squeezed for buffering, and the limit block 12 is driven to slide relative to the limit groove 11 during the movement of the slider 6, and because the two have been frosted, there is a large friction resistance; on the other hand, the force ring 10 is squeezed and the connecting rod 9 and the cross bar 8 are connected. The rod 9 and the cross bar 8 push the piston plate 15 to slide in the buffer cylinder 14, wherein the force-bearing side pushes the piston plate 15 to move deeper into the buffer cylinder 14 through the cross bar 8, so that positive pressure is generated inside the buffer cylinder 14, but the diameter of the air release pipe 16 is small and the pressure release process is slow, so it will hinder the movement of the force ring 10 under the action of positive pressure, while the other side pulls the piston plate 15 to move toward the outlet position of the buffer cylinder 14 through the cross bar 8, so that negative pressure is generated inside the buffer cylinder 14, and air is taken in through the air release pipe 16 with a smaller diameter, which will also hinder the movement of the force ring 10, and cooperate with the springs 7 on the other two sides to achieve the effect of a damper, buffering the force ring 10, thereby hindering the sling from continuing to swing, so as to prevent the sling from swinging too much and causing damage to the cargo, thereby greatly protecting the safety of the cargo and the safety of the lifting site.
[0047] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.
Claims
1. A crane buffer protection device, comprising a crane body (1); characterized in that: The arm end of the crane body (1) is fixedly connected with a mounting frame (2), the bottom of the mounting frame (2) is fixedly connected with a protection frame (3), the inner wall of the protection frame (3) is provided with sliding grooves (4) all around, the inner walls of the sliding grooves (4) are fixedly connected with sliding rods (5), the outer sides of the sliding rods (5) are slidably connected with sliders (6), the outer sides of the sliders (6) are slidably connected with the inner walls of the sliding grooves (4), the outer sides of the sliding rods (5) and the two sides of the sliders (6) are sleeved with springs (7), one side of the slider (6) is slidably connected with a cross bar (8), one end of the cross bar (8) is fixedly connected with a connecting rod (9), the top ends of the connecting rods (9) are fixedly connected with a force ring (10), and the hook and the sling of the crane body (1) extend to the bottom of the force ring (10) through the central position of the force ring (10).
2. A crane buffer protection device according to claim 1, characterized in that: The protective frame (3) is provided with connecting grooves (17) on all sides, the side away from the slider (6) is fixedly connected to the connecting frame (13), the side away from the connecting frame (13) is fixedly connected to the buffer cylinder (14), the inner wall of the buffer cylinder (14) is slidably connected with a piston plate (15), the end away from the cross bar (8) extends to the inside of the buffer cylinder (14) through the connecting groove (17) and is fixedly connected to one side of the piston plate (15), and a deflation pipe (16) is provided on one side of the buffer cylinder (14).
3. A crane buffer protection device according to claim 2, characterized in that: The stress-bearing ring (10) is configured as a circular ring structure.
4. A crane buffer protection device according to claim 3, characterized in that: The top and bottom of the protection frame (3) are both provided with a limiting groove (11), the top and bottom of the sliding block (6) are both fixedly connected to a limiting block (12), and the outer side of the limiting block (12) is slidably connected to the limiting groove (11).
5. A crane buffer protection device according to claim 4, characterized in that: The outer side of the limiting block (12) and the inner wall of the limiting groove (11) are both frosted.
6. A crane buffer protection device according to claim 5, characterized in that: A reinforcement plate is symmetrically fixedly connected between the mounting frame (2) and the protection frame (3).