Anti-loosening structure for nut of breaking hammer
The anti-loosening structure does not require welding and the nut is prevented from loosening by cooperating with the positioning protrusion and the groove, which solves the problem of nut ring welding cracking and increases the service life of the breaker.
Patent Information
- Application Number
- CN202423234125.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2025-10-14
- Estimated Expiration
- 2034-12-25
AI Technical Summary
The nut ring welding of the existing breaker hammer is prone to cracking, which causes cracks in the weak area of the shell and shortens the service life.
The anti-loosening structure that does not require welding is adopted, and the nut is prevented from loosening by the cooperation of the positioning protrusion and the groove. The outer wall of the nut and the flat surface of the anti-rotation protrusion are positioned and abutted to prevent loosening.
Effectively prevent the nut from loosening and the shell from cracking, and extend the service life.
Smart Images
Figure CN223434607U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of breaking hammers and relates to a nut anti-loosening structure for a breaking hammer. Background Art
[0002] Currently, multiple bolt structures (the bolt structures include screws and nuts) are provided on the breaker hammer housing, and nut rings are welded on the housing to limit the bolt structures and prevent them from loosening.
[0003] However, in actual work, it was found that due to the vibration generated when the breaker hammer was working, the nut ring formed on the shell by welding was prone to weld cracking.
[0004] In addition, high temperature is generated during welding of the nut ring, causing the shell base material to be affected by the high temperature and its performance to change, which leads to cracking of the weak areas between the nut and the cross pin hole and the nut and the maintenance port (the cross pin hole is opened on the shell near the corresponding nut, and the maintenance port is also opened on the shell near the corresponding nut), greatly reducing the service life of the breaker shell. Summary of the Invention
[0005] The purpose of the utility model is to address the above-mentioned problems existing in the prior art and to provide a new breaker hammer nut anti-loosening structure which can prevent the nut from loosening without welding, without causing performance changes in the shell base material and without causing cracking between the cross pin hole and the maintenance port.
[0006] The purpose of the utility model can be achieved through the following technical solutions: A breaker hammer nut anti-loosening structure, the breaker hammer includes a shell and a bolt structure arranged on the shell, and is characterized in that an anti-loosening structure for positioning and preventing the nut from loosening is installed on the shell, the anti-loosening structure has a positioning protrusion, and the shell is provided with a groove for installing the positioning protrusion, the anti-loosening structure has an anti-rotation protrusion on the outside, and the side of the anti-rotation protrusion is a planar structure, and the outer wall of the nut is positioned and abutted against the side of the anti-rotation protrusion.
[0007] In the above-mentioned anti-loosening structure of the breaker hammer nut, the other end of the screw rod passes through the housing and is connected with a locking nut.
[0008] In the above-mentioned anti-loosening structure for a breaker hammer nut, the anti-loosening structure has a slot hole for the screw rod to pass through and connect.
[0009] Compared with the existing technology, the breaker hammer nut anti-loosening structure replaces the existing method of preventing nut loosening by welding nut rings, and has the advantages of preventing cracks, preventing splitting, high nut positioning and increased service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a three-dimensional diagram of the anti-loosening structure of the nut of this breaker hammer.
[0011] Figure 2 It is a three-dimensional diagram of the anti-loosening structure.
[0012] Figure 3 It is a three-dimensional diagram of the anti-loosening structure of the nut of this breaker hammer.
[0013] In the figure, 1. Shell; 2. Nut; 3. Positioning protrusion; 4. Anti-rotation protrusion; 5. Plane structure; 6. Screw; 7. Locking nut; 8. Slotted hole; 9. Cross pin hole; 10. Maintenance port; 11. Anti-loosening structure. DETAILED DESCRIPTION
[0014] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
[0015] like Figure 1 、 Figure 2 、 Figure 3 As shown, the nut anti-loosening structure of the breaker hammer includes a shell 1 and a bolt structure arranged on the shell 1. An anti-loosening structure 11 for positioning and preventing the nut 2 from loosening is installed on the shell 1. The anti-loosening structure 11 has a positioning protrusion 3. A groove for installing the positioning protrusion 3 is opened on the shell 1. The outside of the anti-loosening structure 11 has an anti-rotation protrusion 4, and the side of the anti-rotation protrusion 4 is a plane structure 5. The outer wall of the nut 2 is positioned and abutted against the side of the anti-rotation protrusion 4 to prevent the nut 2 from deflecting, thereby achieving the purpose of preventing loosening.
[0016] Preferably, the other end of the screw rod 6 passes through the housing 1 and is connected to a locking nut 7 .
[0017] Preferably, the anti-loosening structure 11 has a slotted hole 8 for the screw rod 6 to pass through for connection.
[0018] The nut 2 near the cross pin hole 9 and the maintenance port 10 can now be prevented from loosening without welding 2 circles of nuts. The anti-loosening structure 11 is installed on the shell 1 through the positioning protrusion 3 and the groove on the shell 1, and then the screw 6 is inserted into the shell 1 through the slot 8. The outer wall of the nut 2 is positioned on the anti-rotation protrusion 4 in a plane-to-plane fit to prevent loosening. In this way, there is no need for welding, and the base material of the shell 1 will not change. Then, no cracking will occur between the nut 2 and the cross pin hole 9 and between the nut 2 and the maintenance port 10, which greatly improves the service life of the breaker.
[0019] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.
[0020] Although the terms housing 1, nut 2, positioning protrusion 3, anti-rotation protrusion 4, flat structure 5, screw 6, locking nut 7, slot 8, cross pin hole 9, maintenance opening 10, anti-loosening structure 11 are used more frequently herein, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of the present application; any interpretation of them as an additional limitation is contrary to the spirit of the present application.
Claims
1. A nut anti-loosening structure for a breaker hammer, the breaker hammer comprising a housing (1) and a bolt structure arranged on the housing (1), characterized in that: The shell (1) is provided with an anti-loosening structure (11) for positioning and preventing the nut (2) from loosening. The anti-loosening structure (11) has a positioning protrusion (3). The shell (1) is provided with a groove for installing the positioning protrusion (3). The anti-loosening structure (11) has an anti-rotation protrusion (4) on the outside, and the side of the anti-rotation protrusion (4) is a flat structure (5). The outer wall of the nut (2) is positioned against the side of the anti-rotation protrusion (4).
2. A breaker hammer nut anti-loosening structure according to claim 1, characterized in that: The other end of the screw (6) passes through the housing (1) and is connected to a locking nut (7).
3. A breaker hammer nut anti-loosening structure according to claim 1, characterized in that: The anti-loosening structure (11) has a slotted hole (8) for the screw rod (6) to pass through and connect.