Middle cylinder body structure of hydraulic breaking hammer
By setting up an oil seal groove and an annular balance groove on the cylinder block in the hydraulic breaker, the wear problem between the piston and the middle cylinder block is solved, the piston is centered and positioned, extending the life of the seal, and ensuring the normal operation of the breaker.
Patent Information
- Application Number
- CN202422132125.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-08-30
AI Technical Summary
During long-term use of the cylinder block in the breaker, due to the non-vertical contact between the piston and the drill rod and the long-term impact, the internal cavity of the piston and the middle cylinder are different, causing swing, causing scratches and wear, affecting the life of the seal and causing oil leakage, and in severe cases, the middle cylinder block is scrapped.
The piston cavity is equipped with an oil seal groove and an annularly distributed balance groove to balance the hydraulic oil pressure, ensure the piston is centered and reduce the risk of scratches.
Through uniform hydraulic support, the piston is prevented from being offset, the cylinder block and piston wear is reduced, the seal life is extended, the oil leakage is avoided, and the working stability of the breaker is improved.
Smart Images
Figure CN223257179U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of breaker hammers and relates to a cylinder body of a hydraulic breaker hammer, in particular to a cylinder body structure of a hydraulic breaker hammer. Background Art
[0002] A breaker hammer is an important piece of engineering machinery that uses hydraulic energy as its motive force to drive the piston inside the upper cylinder body of the hydraulic cylinder to perform reciprocating motion. The piston then hammers the drill rod to transfer energy to the drill rod. The energy on the drill rod is then absorbed by the object being struck, thereby breaking the object. The middle cylinder body of the breaker hammer is an important component of the breaker hammer, and it undertakes the key task of energy conversion and transmission.
[0003] When a breaker hammer is operating for extended periods, the drill rod cannot maintain a completely vertical position during operation. Furthermore, the prolonged collision between the piston and the drill rod causes an inclined contact surface. Combining these two factors, the piston in the breaker hammer's cylinder body will swing. This prolonged swinging causes the piston and the inner cavity of the cylinder body to become misaligned, causing contact and scraping between the piston and the cylinder body, resulting in scratches and wear on the cylinder body and piston, known as "cylinder pulling." This creates resistance and affects the normal operation of the breaker hammer. Scratches on either the cylinder body or the piston directly impact the service life of the seals. Minor scratches can cause oil leaks in the sealing system, with internal leakage leading to pressure loss. External leakage not only causes a sharp drop in pressure but also results in a significant loss of hydraulic oil. Severe scratches prevent sealing, rendering the entire cylinder body useless. Summary of the Invention
[0004] The purpose of the utility model is to provide a cylinder structure in a hydraulic breaker hammer in order to solve the above problems in the prior art.
[0005] The purpose of the utility model can be achieved through the following technical solutions: A hydraulic breaker hammer cylinder structure, characterized in that it includes a cylinder body, a piston chamber is provided in the cylinder body, and a piston ring is installed at one end of the piston chamber, a plurality of oil seal grooves are provided on the piston chamber, an oil seal for sealing is provided in the oil seal groove, and a plurality of balancing grooves for balancing the hydraulic oil pressure are evenly arranged in the piston chamber, and the balancing grooves are distributed in an annular shape on the piston chamber.
[0006] In the cylinder structure of the above-mentioned hydraulic breaker, the balance groove is an arc-shaped groove.
[0007] In the above-mentioned middle cylinder structure of a hydraulic breaker, a mounting hole is provided on the middle cylinder.
[0008] Compared with the prior art, the cylinder structure of the hydraulic breaker hammer has a balancing groove on the piston cavity for balancing the hydraulic oil pressure, so that the piston is hydraulically supported uniformly along the circumference in the cylinder, so that it is centered and not easily scratched. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 It is a cross-sectional view of the cylinder structure of this hydraulic breaker.
[0010] In the figure, 1. middle cylinder body; 2. piston chamber; 3. piston ring; 4. oil seal groove; 5. oil seal; 6. balance groove. DETAILED DESCRIPTION
[0011] 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.
[0012] like Figure 1 As shown, the structure of the cylinder body 1 of the hydraulic breaker includes a cylinder body 1, a piston chamber 2 is provided in the cylinder body 1, and a piston chamber 3 is installed at one end of the piston chamber 2, a plurality of oil seal grooves 4 are provided on the piston chamber 2, and an oil seal 5 for sealing is provided in the oil seal groove 4, and a plurality of balancing grooves 6 for balancing the hydraulic oil pressure are evenly provided in the piston chamber 2, and the balancing grooves 6 are distributed in an annular shape on the piston chamber 2. The piston is uniformly hydraulically supported along the periphery in the cylinder body, so that it is centered and not easily scratched.
[0013] To elaborate further, the balancing groove 6 is an arc-shaped groove, and the arc-shaped structure can easily increase the pressure-bearing area and prevent the piston from deflecting in the middle cylinder body 1.
[0014] 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.
[0015] Although this document frequently uses terms such as middle cylinder 1, piston chamber 2, piston chamber 3, oil seal groove 4, oil seal 5, and balance groove 6, the use of other terms is not excluded. These terms are used solely to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations is contrary to the spirit of the present invention.
Claims
1. A cylinder (1) structure of a hydraulic breaker, characterized in that: The invention comprises a middle cylinder body (1), wherein a piston chamber (2) is provided in the middle cylinder body (1), and a piston ring (3) is installed at one end of the piston chamber (2), a plurality of oil seal grooves (4) are provided on the piston chamber (2), an oil seal (5) for sealing is provided in the oil seal groove (4), and a plurality of balancing grooves (6) for balancing the hydraulic oil pressure are evenly provided in the piston chamber (2), and the balancing grooves (6) are distributed in an annular shape on the piston chamber (2).
2. The cylinder body (1) structure of a hydraulic breaker according to claim 1, characterized in that: The balancing groove (6) is an arc-shaped groove.