Collision buffering device
By designing the collision buffer device of the buffer and shock absorbing units in the single-arm rotary crane and driving system, the safety hazards and equipment damage caused by violent collisions are solved, effective buffering and shock absorption are achieved, and equipment safety and service life are improved.
Patent Information
- Application Number
- CN202422637317.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-10-30
AI Technical Summary
The prior art cannot effectively alleviate severe collisions caused by the weight and inertia of the workpiece, and poses safety hazards and equipment damage risks in single-arm rotary cranes and driving systems.
A collision buffer device is designed, including a fixed mount and a mobile mount, and a buffer unit and a shock absorber are arranged vertically. By using the cooperation of the buffer mechanism and the shock absorber block, the relative settings of the buffer block and the buffer mechanism are buffered first and then shock absorbed, reducing the collision strength and achieving a smooth stop.
It effectively alleviates the huge impact force caused by impact, eliminates safety hazards, and extends the service life of the equipment.
Smart Images
Figure CN223257420U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of buffer devices, in particular to a collision buffer device. Background Art
[0002] In modern manufacturing and industrial fields, single-arm rotary cranes and cranes have become increasingly important due to their high efficiency in handling heavy workpieces. However, in actual operation, due to the huge weight of the hoisted workpiece, when the single-arm rotary crane rotates the workpiece to the extreme end of its range of motion, or when the crane reaches the end of the track, the mass of the workpiece itself, combined with the inertia generated by the equipment during movement, can cause a violent collision with the limit device. In this case, the excessive impact force not only increases the risk of the workpiece falling off, threatening the personal safety of the operator, but may also cause damage to the equipment, thereby affecting production efficiency. This problem is particularly prominent in single-arm rotary cranes and crane systems that rely on manual drag to achieve rotation or lateral movement, posing a serious safety threat to on-site workers.
[0003] Currently, the common countermeasure adopted in the industry is to reduce the impact by installing a limit device with rubber buffer blocks when the single-arm rotating crane reaches the limit of its rotational motion or the crane slides to the end of the track. However, this solution can only provide a very limited buffering effect and fails to effectively alleviate the huge impact force caused by the collision, thereby failing to fundamentally eliminate the related safety hazards and equipment damage risks. In view of this situation, a more advanced solution is urgently needed, that is, when the single-arm rotating crane approaches the end of its rotation stroke or the crane reaches the limit of its lateral sliding range, it can achieve gentle deceleration and eventually a smooth stop, thereby significantly reducing the vibration amplitude, ensuring safety during operation, and extending the service life of the equipment. Utility Model Content
[0004] In view of this, the technical problem to be solved by the present invention is: to provide a collision buffer device that can buffer the impact collision generated when the single-arm rotary crane reaches the limit of its rotational motion or the vehicle slides to the end of the track, thereby achieving effective buffering and shock absorption during the collision process, avoiding safety hazards and equipment damage caused by the collision, improving equipment safety and extending its service life.
[0005] In order to solve the above technical problems, the technical solution of the utility model is:
[0006] A collision buffer device comprises a fixed mounting seat and a movable mounting seat; a buffer unit and a shock absorbing unit are arranged vertically in sequence between the fixed mounting seat and the movable mounting seat;
[0007] The buffer unit includes a buffer block fixed on the fixed mounting seat, and a buffer mechanism fixed on the movable mounting seat, wherein the buffer mechanism and the buffer block are arranged opposite to and matched with each other along the X direction;
[0008] The shock absorbing unit includes a first shock absorbing block fixed on the fixed mounting seat, and a second shock absorbing block fixed on the movable mounting seat, wherein the first shock absorbing block and the second shock absorbing block are arranged opposite to each other along the X direction and are adapted to each other;
[0009] Along the X direction, the length of the buffer mechanism is greater than the length of the second shock-absorbing block. When the movable mounting seat moves toward the fixed mounting seat along the X direction, the buffer mechanism first abuts against the buffer block.
[0010] Preferably, the buffer mechanism includes a buffer valve body, a buffer rod, an inner spring, and an outer spring;
[0011] The buffer valve body is fixed on the movable mounting seat along the X direction;
[0012] The buffer rod is coaxially arranged with the buffer valve body, the inner end of the buffer rod is located inside the buffer valve body, the outer end of the buffer rod extends out of the buffer valve body and is located outside the buffer valve body, and the buffer rod is adapted to the buffer block;
[0013] The inner spring is installed inside the buffer valve body, and the inner spring abuts between the buffer valve body and the inner end of the buffer rod;
[0014] The outer spring is sleeved on the outer side of the buffer rod, and the outer spring abuts between the buffer valve body and the outer end of the buffer rod.
[0015] Preferably, a valve body mounting cover is mounted on one end of the buffer valve body close to the buffer block, and the outer spring abuts between the valve body mounting cover and the outer end of the buffer rod.
[0016] Preferably, the buffer rod comprises a buffer rod body and a collision head;
[0017] The inner end of the buffer rod body abuts against the inner spring, and the outer spring is sleeved on the buffer rod body;
[0018] The collision head is threadedly connected to the outer end of the buffer rod body, and the outer spring abuts between the valve body mounting cover and the collision head.
[0019] Preferably, a buffer groove is provided on the buffer block, and the buffer groove is used to accommodate the collision head.
[0020] Preferably, a pressure regulating valve is installed on one end of the buffer valve body away from the buffer block, and the inner spring abuts between the pressure regulating valve and the inner end of the buffer rod; the pressure regulating valve is used to adjust the compression degree of the inner spring.
[0021] Preferably, the pressure regulating valve includes a regulating valve body, a connecting sleeve, a baffle, and a fastening bolt;
[0022] The regulating valve body and the buffer valve body are coaxially arranged;
[0023] The connecting sleeve is arranged between the regulating valve body and the buffer valve body, and the connecting sleeve is threadedly connected to the regulating valve body and the buffer valve body;
[0024] The baffle is arranged inside the buffer valve body, and the baffle is perpendicular to the axis of the buffer valve body;
[0025] The fastening bolts securely connect the baffle to the regulating valve body.
[0026] Preferably, the elastic force of the inner spring is greater than the elastic force of the outer spring.
[0027] Preferably, the buffer valve body is fixedly connected to the movable mounting seat via a fastening nut.
[0028] Preferably, in the vertical direction, the outer surface of the buffer block and the outer surface of the first shock-absorbing block are in the same plane.
[0029] After adopting the above technical solution, the beneficial effects of the utility model are:
[0030] Since the present application includes a fixed mounting seat and a movable mounting seat; a buffer unit and a shock-absorbing unit are vertically arranged in sequence between the fixed mounting seat and the movable mounting seat; the fixed mounting seat is used to be installed on the fixed end of the single-arm rotating crane at the rotation limit position or the fixed end of the trolley sliding track, and the movable mounting seat is used to be installed on the rotating end of the single-arm rotating crane at the rotation limit position or the two ends of the trolley for limiting the position. When the single-arm rotating crane rotates or the trolley moves, the movable mounting seat is synchronously driven to move toward the fixed mounting seat. When the single-arm rotating crane or the trolley reaches its rotation motion boundary or the trolley slides to the track terminal, the buffer unit and the shock-absorbing unit can buffer the impact collision generated by it, thereby achieving effective buffering and shock absorption during the collision process, avoiding safety hazards and equipment damage caused by the collision, improving equipment safety and extending its service life.
[0031] The buffer unit includes a buffer block fixed on the fixed mounting seat, and a buffer mechanism fixed on the movable mounting seat, the buffer mechanism and the buffer block are arranged opposite to and adapted to each other along the X direction; the shock absorbing unit includes a first shock absorbing block fixed on the fixed mounting seat, and a second shock absorbing block fixed on the movable mounting seat, the first shock absorbing block and the second shock absorbing block are arranged opposite to and adapted to each other along the X direction; along the X direction, the length of the buffer mechanism is greater than the length of the second shock absorbing block, and when the movable mounting seat moves along the X direction toward the side of the fixed mounting seat, the buffer mechanism first abuts against the buffer block. The buffer mechanism cooperates with the buffer block to first buffer the collision and reduce the intensity of the collision. When the collision intensity is reduced, it is possible to directly offset the collision force and achieve gentle deceleration until it stops; it is also possible that only the collision intensity is reduced, but the single-arm rotating crane or driving will continue to move but at a reduced speed. At this time, the second shock-absorbing block abuts against the first shock-absorbing block, and the second shock-absorbing block made of elastic material further reduces the collision intensity with the first shock-absorbing block, greatly reducing the vibration amplitude, achieving shock absorption and smooth stopping, thereby effectively alleviating the huge impact force caused by the collision, thereby fundamentally eliminating related safety hazards and equipment damage risks, and extending the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0033] Figure 1 This is a schematic structural diagram of a collision buffer device according to an embodiment of the present utility model;
[0034] Figure 2 yes Figure 1 A diagram showing a state in which the first shock absorbing block and the second shock absorbing block are in contact;
[0035] Figure 3 yes Figure 1 Rear view;
[0036] Figure 4 yes Figure 3 AA section view;
[0037] Figure 5 yes Figure 1 a cross-sectional view in another direction;
[0038] In the picture:
[0039] 1. Fixed mounting base;
[0040] 2. Mobile mounting base;
[0041] 3. Buffer block; 31. Buffer groove;
[0042] 4. Buffer mechanism; 41. Buffer valve body; 42. Buffer rod; 421. Buffer rod body; 422. Collision head; 43. Inner spring; 44. Outer spring; 45. Valve body mounting cover; 46. Pressure regulating valve; 461. Regulating valve body; 462. Connecting sleeve; 463. Baffle; 464. Fastening bolt; 47. Fastening nut;
[0043] 5. The first shock-absorbing block;
[0044] 6. The second shock-absorbing block;
[0045] The X direction in the figure is the moving direction of the mobile mounting base. DETAILED DESCRIPTION
[0046] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0047] like Figures 1 to 5 As shown together, the utility model includes a fixed mounting seat 1 and a movable mounting seat 2; a buffer unit and a shock-absorbing unit are vertically arranged in sequence between the fixed mounting seat 1 and the movable mounting seat 2; the fixed mounting seat 1 is used to be installed on the fixed end of the rotation limit position of the single-arm rotating crane or the fixed end of the trolley sliding track, and the movable mounting seat 2 is used to be installed on the rotation end of the single-arm rotating crane at the rotation limit position or the two ends of the trolley for limiting the position. When the single-arm rotating crane rotates or the trolley moves, the movable mounting seat 2 is synchronously driven to move toward the fixed mounting seat 1. When the single-arm rotating crane reaches its rotation motion boundary or the trolley slides to the track terminal, the buffer unit and the shock-absorbing unit can buffer the impact collision generated therefrom, thereby achieving effective buffering and shock absorption during the collision process, avoiding safety hazards and equipment damage caused by the collision, improving equipment safety and extending its service life.
[0048] Among them, the buffer unit includes a buffer block 3 fixed on the fixed mounting seat 1, and a buffer mechanism 4 fixed on the movable mounting seat 2, the buffer mechanism 4 and the buffer block 3 are arranged opposite to each other along the X direction and adapted to each other; the shock absorbing unit includes a first shock absorbing block 5 fixed on the fixed mounting seat 1, and a second shock absorbing block 6 fixed on the movable mounting seat 2, the first shock absorbing block 5 and the second shock absorbing block 6 are arranged opposite to each other along the X direction and adapted to each other; along the X direction, the length of the buffer mechanism 4 is greater than the length of the second shock absorbing block 6, when the movable mounting seat 2 moves along the X direction toward the side of the fixed mounting seat 1, the buffer mechanism 4 first abuts against the buffer block 3.
[0049] Preferably, vertically, the outer surface of the buffer block 3 and the outer surface of the first shock-absorbing block 5 are in the same plane. When the buffer mechanism 4 moves toward the fixed mounting seat 1, it can be ensured that the buffer mechanism 4 first abuts against the buffer block 3. Only when the buffer mechanism 4 itself cannot completely offset the collision, the first shock-absorbing block 5 and the second shock-absorbing block 6 abut against each other to offset it.
[0050] The buffer mechanism 4 cooperates with the buffer block 3 to first buffer the collision caused and reduce the intensity of the collision. When the collision intensity is reduced, it is possible to directly offset the collision force and achieve smooth deceleration until it stops; it is also possible that only the collision intensity is reduced, but the single-arm rotary crane or driving will continue to move but at a reduced speed. At this time, the second shock-absorbing block 6 abuts against the first shock-absorbing block 5, and the second shock-absorbing block 6 made of elastic material and the first shock-absorbing block 5 further reduce the intensity of the collision, greatly reduce the vibration amplitude, achieve shock absorption and smooth stop, thereby effectively alleviating the huge impact force caused by the collision, thereby fundamentally eliminating related safety hazards and equipment damage risks, and extending the service life of the equipment.
[0051] In the present application, the buffer mechanism 4 includes a buffer valve body 41, a buffer rod 42, an inner spring 43, and an outer spring 44; wherein, the buffer valve body 41 is fixed on the movable mounting seat 2 along the X direction, and preferably, the buffer valve body 41 is fixedly connected to the movable mounting seat 2 by a fastening nut 47; the buffer rod 42 is coaxially arranged with the buffer valve body 41, the inner end of the buffer rod 42 is located inside the buffer valve body 41, and the outer end of the buffer rod 42 extends out of the buffer valve body 41 and is located outside the buffer valve body, and the buffer rod 42 is adapted to the buffer block 3; the inner spring 43 is installed inside the buffer valve body 41, and the inner spring 43 abuts between the buffer valve body 41 and the inner end of the buffer rod 42; the outer spring 44 is sleeved on the outside of the buffer rod 42, and the outer spring 44 abuts between the buffer valve body 41 and the outer end of the buffer rod 42.
[0052] When a collision occurs, the buffer rod 42 first contacts the buffer block 3, and then the inner spring 43 and the outer spring 44 are compressed synchronously. Under the elastic force of the springs, the retraction speed of the buffer rod 42 is greatly reduced, thereby reducing or even offsetting the collision force.
[0053] In order to facilitate the installation of the buffer rod 42 inside the buffer valve body 41 , a valve body installation cover 45 is installed on the end of the buffer valve body 41 close to the buffer block 3 , and the outer spring 44 abuts between the valve body installation cover 45 and the outer end of the buffer rod 42 .
[0054] In the present application, the buffer rod 42 includes a buffer rod body 421 and a collision head 422; wherein, the inner end of the buffer rod body 421 abuts against the inner spring 43, and the outer spring 44 is sleeved on the buffer rod body 421; the collision head 422 is threadedly connected to the outer end of the buffer rod body 421, and the outer spring 44 abuts between the valve body mounting cover 45 and the collision head 422.
[0055] A buffer groove 31 is provided on the buffer block 3, which is used to accommodate the collision head 422; the collision head 422 is a conical structure, and the collision head 422 is adapted to the buffer groove 31, which can effectively reduce the vibration of the buffer rod body 421 caused by the collision, thereby improving the buffering and shock absorption effects.
[0056] A pressure regulating valve 46 is installed on the end of the buffer valve body 41 away from the buffer block 3 , and the inner spring 43 abuts between the pressure regulating valve 46 and the inner end of the buffer rod 42 ; the pressure regulating valve 46 is used to adjust the compression degree of the inner spring 43 .
[0057] Among them, the pressure regulating valve 46 includes a regulating valve body 461, a connecting sleeve 462, a baffle 463, and a fastening bolt 464; the regulating valve body 461 and the buffer valve body 41 are coaxially arranged; the connecting sleeve 462 is arranged between the regulating valve body 461 and the buffer valve body 41, and the connecting sleeve 462 and the regulating valve body 461 and the buffer valve body 41 are all threadedly connected; the baffle 463 is arranged inside the buffer valve body 41, and the baffle 463 is perpendicular to the axis of the buffer valve body 41; the fastening bolt 464 fixes the baffle 463 to the regulating valve body 461.
[0058] First, connect the regulating valve body 461 to the internal thread of the connecting sleeve 462, then securely connect the baffle 463 to the regulating valve body 461 with the fastening bolts 464. Then, connect the connecting sleeve 462 to the interior of the buffer valve body 41 with the external threads, and drive the fastening bolts 464 and baffle 463 to be installed together inside the buffer valve body 41. At this time, the baffle 463 abuts against the inner spring 43. By screwing the regulating valve body 461, it moves toward or away from the inner spring 43, driving the baffle 463 to move in the same direction, thereby adjusting the pressure of the inner spring 43. Preferably, the elastic force of the inner spring 43 is greater than the elastic force of the outer spring 44.
[0059] The following describes the working principle using a single-arm rotary crane as an example.
[0060] When using this application, first, the fixed mounting seat 1 drives the buffer block 3 and the first shock-absorbing block 5 installed thereon to be installed together at the fixed end of the single-arm rotating crane at the rotation limit position, and the movable mounting seat 2 drives the buffer mechanism 4 and the second shock-absorbing block 6 installed thereon to be installed together at the rotation end of the single-arm rotating crane at the rotation limit position.
[0061] When the single-arm rotary crane is hoisting a workpiece and rotating, it drives the movable mounting seat 2 to move toward the fixed mounting seat 1. During this process, the collision head 422 first abuts against the buffer block 3, driving the buffer rod body 421 to retract inward, compressing the outer spring 44 and the inner spring 43. Under the elastic force of the two springs, the force generated by the rotation is offset. If all of it can be offset, the force generated by the rotation of the single-arm rotary crane will be buffered. If all of it cannot be offset, the buffer rod body 421 will be driven to continue to retract inward. During this process, the second shock-absorbing block 6 moves synchronously toward the first shock-absorbing block 5 until the second shock-absorbing block 6 abuts against the first shock-absorbing block 5. Both shock-absorbing blocks are made of elastic material. Based on the material properties of the elastic material itself, when the second shock-absorbing block 6 abuts against the first shock-absorbing block 5, it can dampen the impact caused by the collision, thereby effectively alleviating the huge impact force caused by the collision, thereby fundamentally eliminating the related safety hazards and equipment damage risks, and extending the service life of the equipment.
[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A collision buffer device, comprising a fixed mounting seat and a movable mounting seat; characterized in that: A buffer unit and a shock absorbing unit are vertically arranged in sequence between the fixed mounting seat and the movable mounting seat; The buffer unit includes a buffer block fixed on the fixed mounting seat, and a buffer mechanism fixed on the movable mounting seat, wherein the buffer mechanism and the buffer block are arranged opposite to and matched with each other along the X direction; The shock absorbing unit includes a first shock absorbing block fixed on the fixed mounting seat, and a second shock absorbing block fixed on the movable mounting seat, wherein the first shock absorbing block and the second shock absorbing block are arranged opposite to each other along the X direction and are adapted to each other; Along the X direction, the length of the buffer mechanism is greater than the length of the second shock-absorbing block. When the movable mounting seat moves toward the fixed mounting seat along the X direction, the buffer mechanism first abuts against the buffer block.
2. The impact absorbing device according to claim 1, wherein: The buffer mechanism includes a buffer valve body, a buffer rod, an inner spring, and an outer spring; The buffer valve body is fixed on the movable mounting seat along the X direction; The buffer rod is coaxially arranged with the buffer valve body, the inner end of the buffer rod is located inside the buffer valve body, the outer end of the buffer rod extends out of the buffer valve body and is located outside the buffer valve body, and the buffer rod is adapted to the buffer block; The inner spring is installed inside the buffer valve body, and the inner spring abuts between the buffer valve body and the inner end of the buffer rod; The outer spring is sleeved on the outer side of the buffer rod, and the outer spring abuts between the buffer valve body and the outer end of the buffer rod.
3. The impact absorbing device according to claim 2, wherein: A valve body mounting cover is mounted on one end of the buffer valve body close to the buffer block, and the outer spring abuts between the valve body mounting cover and the outer end of the buffer rod.
4. The impact absorbing device according to claim 3, wherein: The buffer rod comprises a buffer rod body and a collision head; The inner end of the buffer rod body abuts against the inner spring, and the outer spring is sleeved on the buffer rod body; The collision head is threadedly connected to the outer end of the buffer rod body, and the outer spring abuts between the valve body mounting cover and the collision head.
5. The impact absorbing device according to claim 4, characterized in that: The buffer block is provided with a buffer groove, and the buffer groove is used to accommodate the collision head.
6. The impact absorbing device according to claim 2, wherein: A pressure regulating valve is installed on one end of the buffer valve body away from the buffer block, and the inner spring abuts between the pressure regulating valve and the inner end of the buffer rod; the pressure regulating valve is used to adjust the compression degree of the inner spring.
7. The impact absorbing device according to claim 6, wherein: The pressure regulating valve includes a regulating valve body, a connecting sleeve, a baffle, and fastening bolts; The regulating valve body and the buffer valve body are coaxially arranged; The connecting sleeve is arranged between the regulating valve body and the buffer valve body, and the connecting sleeve is threadedly connected to the regulating valve body and the buffer valve body; The baffle is arranged inside the buffer valve body, and the baffle is perpendicular to the axis of the buffer valve body; The fastening bolts securely connect the baffle to the regulating valve body.
8. The impact absorbing device according to claim 2, wherein: The elastic force of the inner spring is greater than the elastic force of the outer spring.
9. The impact absorbing device according to claim 2, wherein: The buffer valve body is fixedly connected to the movable mounting seat via a fastening nut.
10. The impact absorbing device according to claim 1, wherein: In the vertical direction, the outer surface of the buffer block and the outer surface of the first shock absorbing block are in the same plane.