CN215719915U - Rear cylinder body assembly of hydraulic breaking hammer - Google Patents
Rear cylinder body assembly of hydraulic breaking hammer Download PDFInfo
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- CN215719915U CN215719915U CN202121629605.9U CN202121629605U CN215719915U CN 215719915 U CN215719915 U CN 215719915U CN 202121629605 U CN202121629605 U CN 202121629605U CN 215719915 U CN215719915 U CN 215719915U
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Abstract
The utility model relates to mining equipment, in particular to a rear cylinder assembly of a hydraulic breaking hammer, which comprises a rear cylinder body, a middle cylinder body and pistons, wherein the pistons are positioned in the rear cylinder body and the middle cylinder body, and the rear cylinder assembly is different from the prior art in that: an annular groove is formed in the end face of one end, close to the middle cylinder body, of the rear cylinder body or the circumferential inner wall, close to the end face, of the rear cylinder body, a piston ring made of wear-resistant materials or plated with a wear-resistant layer on the surface is embedded in the annular groove, and the inner ring of the piston ring is in clearance fit with the circumferential outer wall of the piston. Compared with the prior art, the utility model does not change the original structures of the middle cylinder body and the rear cylinder body, only the annular groove is arranged on the rear cylinder body, and the piston ring which is made of wear-resistant materials or plated with a wear-resistant layer on the surface is embedded in the annular groove, so that the strain caused by radial component force can be reduced, the failure rate of the breaking hammer is reduced, the manufacturing cost is basically equal to the original structure, and the cost is not increased too much.
Description
Technical Field
The utility model relates to mining equipment, in particular to a rear cylinder body assembly of a hydraulic breaking hammer.
Technical Field
The hydraulic pump is used as a power source, hydraulic oil is used as a medium, and the piston is driven to reciprocate by using the static pressure of the hydraulic oil as power, so that the piston impacts a drill rod at a high speed during the stroke, and the drill rod breaks solid such as ore, concrete and the like. The device can more effectively clean floating stones and soil in rock gaps in the process of excavating a building foundation. However, the existing hydraulic breaking hammer still has some defects: because the rear cylinder body of the existing hydraulic breaking hammer is usually made of non-wear-resistant materials, the rear cylinder body is easily damaged by the action of radial component force in the operation process of the piston, and the failure rate of the hydraulic breaking hammer is improved.
SUMMERY OF THE UTILITY MODEL
In order to overcome one of the defects or shortcomings of the prior art, the utility model discloses a rear cylinder body assembly of a hydraulic breaking hammer, which comprises a rear cylinder body, a middle cylinder body and pistons positioned in the rear cylinder body and the middle cylinder body, wherein the rear cylinder body assembly is different from the prior art in that: an annular groove is formed in the end face of one end, close to the middle cylinder body, of the rear cylinder body or the circumferential inner wall, close to the end face, of the rear cylinder body, a piston ring made of wear-resistant materials or plated with a wear-resistant layer on the surface is embedded in the annular groove, and the inner ring of the piston ring is in clearance fit with the circumferential outer wall of the piston.
Further, an oil seal fixer is arranged on the circumferential inner wall of the middle cylinder body close to the rear cylinder body, and the fit clearance between an oil seal of the oil seal fixer and the piston is far larger than that between the piston ring and the piston.
Compared with the prior art, the utility model does not change the original structures of the middle cylinder body and the rear cylinder body, only the annular groove is arranged on the rear cylinder body, and the piston ring which is made of wear-resistant materials or plated with a wear-resistant layer on the surface is embedded in the annular groove, so that the strain caused by radial component force can be reduced, the failure rate of the breaking hammer is reduced, the manufacturing cost is basically equal to the original structure, and the cost is not increased too much.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment.
Detailed Description
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1, the rear cylinder assembly of the hydraulic breaking hammer comprises a rear cylinder 1, a middle cylinder 2, a piston 3 located in the rear cylinder 1 and the middle cylinder 2, wherein an annular groove is formed in an end face, close to the middle cylinder 2, of one end of the rear cylinder 1, a piston ring 4 with a wear-resistant layer plated on the surface is embedded in the annular groove, and an inner ring of the piston ring 4 is in clearance fit with a circumferential outer wall of the piston 3. If the fit clearance between the piston ring 4 and the piston 3 is defined as
The fit clearance between the oil seal of the oil seal holder 5 mounted on the circumferential inner wall of the middle cylinder body 2 close to the rear cylinder body 1 and the piston 3 is
In this embodiment mode
Much less than
The foregoing is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way; those skilled in the art can make many possible variations or modifications to the utility model using the methods and techniques disclosed above, or to modify equivalent embodiments without departing from the scope of the utility model. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention.
Claims (2)
1. The utility model provides a back cylinder body assembly of hydraulic breaking hammer, includes back cylinder body (1), well cylinder body (2), is located piston (3) in back cylinder body (1), well cylinder body (2), its characterized in that: the piston ring is characterized in that an annular groove is formed in the circumferential inner wall of the rear cylinder body (1) close to one end face of the rear cylinder body (1) of the middle cylinder body (2) or close to the end face, a piston ring (4) made of wear-resistant materials or plated with a wear-resistant layer on the surface is embedded in the annular groove, and the inner ring of the piston ring (4) is in clearance fit with the circumferential outer wall of the piston (3).
2. The rear cylinder assembly of a hydraulic demolition hammer as set forth in claim 1, wherein: an oil seal fixer (5) is arranged on the circumferential inner wall of the middle cylinder body (2) close to the rear cylinder body (1), and the fit clearance (phi 2) between the oil seal of the oil seal fixer (5) and the piston (3) is far larger than the fit clearance (phi 1) between the piston ring (4) and the piston (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121629605.9U CN215719915U (en) | 2021-07-17 | 2021-07-17 | Rear cylinder body assembly of hydraulic breaking hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121629605.9U CN215719915U (en) | 2021-07-17 | 2021-07-17 | Rear cylinder body assembly of hydraulic breaking hammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215719915U true CN215719915U (en) | 2022-02-01 |
Family
ID=79987382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121629605.9U Active CN215719915U (en) | 2021-07-17 | 2021-07-17 | Rear cylinder body assembly of hydraulic breaking hammer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215719915U (en) |
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2021
- 2021-07-17 CN CN202121629605.9U patent/CN215719915U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |