Spring buffer device of crown block
By designing a spring-loaded buffer device for the buffer impact rod and the buffer housing, the problem of easy breakage of traditional buffers was solved, resulting in more stable crane operation and a longer equipment life.
Patent Information
- Application Number
- CN202520622388.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-03
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-04-03
AI Technical Summary
Traditional overhead crane spring buffers are not strong enough and are prone to breakage and detachment, resulting in poor buffering effect and affecting equipment stability and service life.
A spring-loaded buffer device, comprising a buffer impact bar and a buffer housing, was designed. It utilizes springs and buffer pads to absorb impact energy and is fixed to the tail of the crane by eye bolts to achieve long-distance buffering.
It improves the stability of overhead crane operation, reduces the risk of vibration and impact, extends the service life of the equipment, and reduces maintenance costs.
Smart Images
Figure CN223866226U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of overhead crane protection technology, specifically relating to a spring buffer device for overhead cranes. Background Technology
[0002] With the increasingly widespread application of lifting equipment, collisions during operation can damage mechanical components, causing safety hazards and affecting the equipment's lifespan. As requirements for parameters such as operating speed and lifting capacity of lifting equipment continue to increase, spring buffers have emerged. The primary purpose of buffers is to address collision problems in overhead cranes and other lifting equipment during operation. The elastic potential energy storage principle of springs allows them to absorb more energy, enabling their application in overhead cranes with larger lifting capacities and higher operating speeds.
[0003] However, traditional overhead crane spring buffers have the following problems: they are thin, lack strength and buffering force, and are prone to breakage and detachment, resulting in frequent maintenance and replacement of the buffers. Or, due to insufficient buffering force, the trolley wheels may directly hit the rail head stop, causing damage to the trolley wheel bearings, bases and bearing housings. At the same time, it will cause vibration of nearby equipment and facilities and the plant, affecting the service life of the overhead crane. Utility Model Content
[0004] This invention provides a spring buffer device for overhead cranes to solve the problems of insufficient buffering effect of existing overhead crane buffers, easy breakage and detachment of the original overhead crane buffers, and affecting the normal operation of the overhead crane track.
[0005] The technical solution of this utility model is: a spring buffer device for an overhead crane, including a buffer rod and a buffer housing. The buffer housing has through holes on both sides. The buffer rod is slidably connected inside the buffer housing. The buffer rod passes through the through holes on both sides of the buffer housing. The buffer rod has a boss in the middle. A spring is provided between the boss and the inner wall of one side of the buffer housing.
[0006] As a further improvement of this utility model, a buffer pad is provided on the boss and the end of the spring that is not connected.
[0007] As a further improvement of this utility model, the buffer housing is provided with a lifting eye bolt, and the buffer housing can be fixed to the tail of the crane by the lifting eye bolt.
[0008] The beneficial effects of this invention are as follows: This invention achieves the buffering effect of the overhead crane through the spring between the buffer housing and the buffer impact rod. The long buffer area within the buffer housing improves the stability of the overhead crane operation and reduces the impact of vibration on the overhead crane and cargo. This invention also enhances the shock absorption capacity of the buffer through the buffer pad, reducing the potential risks from impacts, lowering maintenance costs, and extending the service life of the overhead crane equipment. This invention has a simple structure, stable operation, and improves the stability of the overhead crane operation by enhancing the buffering effect through the spring within the buffer, thus reducing the potential risks from impacts. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the structure of this utility model.
[0010] In the diagram: 1-Lifting eye bolt; 2-Buffer housing; 3-Spring; 4-Buffer pad; 5-Boss; 7-Buffer impact rod. Detailed Implementation
[0011] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0012] like Figure 1 As shown, a spring buffer device for an overhead crane includes a buffer rod 7 and a buffer housing 2. The buffer housing 2 has through holes on both sides. The buffer rod 7 is slidably connected inside the buffer housing 2. The buffer rod 7 passes through the through holes on both sides of the buffer housing 2. The buffer rod 7 has a boss 5 in the middle. A spring 3 is provided between the boss 5 and the inner wall of one side of the buffer housing 2.
[0013] A buffer pad 4 is provided on one end of the boss 5 and the unconnected spring 3.
[0014] The buffer housing 2 is equipped with a lifting eye bolt 1, which can be used to fix the buffer housing 2 to the tail of the crane.
[0015] In use, the device is fixed to the end of the overhead crane using the eye bolt 1. The other side of the buffer impact rod 7 is aligned with the collision component of the overhead crane to ensure effective buffering during a collision. When the overhead crane's main carriage or trolley moves to the end, the collision component of the overhead crane comes into contact with the buffer impact rod 7. The buffer impact rod 7 drives the spring 3 to compress. During the compression deformation process, the spring 3 absorbs the impact energy through friction and damping. After being compressed by the buffer impact rod 7, the spring 3 and the buffer pad 4 work together to mitigate the impact force, thereby reducing the impact speed and playing a buffering role.
Claims
1. A spring buffer device for an overhead crane, characterized in that: It includes a buffer impact rod (7) and a buffer housing (2). The buffer housing (2) has through holes on both sides. The buffer impact rod (7) is slidably connected inside the buffer housing (2). The buffer impact rod (7) passes through the through holes on both sides of the buffer housing (2). The buffer impact rod (7) has a boss (5) in the middle. A spring (3) is provided between the boss (5) and the inner wall of one side of the buffer housing (2).
2. The spring buffer device for an overhead crane according to claim 1, characterized in that: The boss (5) and the end of the unconnected spring (3) are provided with a buffer pad (4).
3. A spring buffer device for an overhead crane according to claim 1 or 2, characterized in that: The buffer housing (2) is provided with a lifting eye bolt (1).