CN220248984U - Reversing valve sleeve for breaking hammer - Google Patents
Reversing valve sleeve for breaking hammer Download PDFInfo
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- CN220248984U CN220248984U CN202321104171.XU CN202321104171U CN220248984U CN 220248984 U CN220248984 U CN 220248984U CN 202321104171 U CN202321104171 U CN 202321104171U CN 220248984 U CN220248984 U CN 220248984U
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- pressure relief
- sleeve body
- relief groove
- groove
- valve
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- 239000006096 absorbing agent Substances 0.000 abstract 1
- 230000035939 shock Effects 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 12
- 230000000694 effects Effects 0.000 description 10
- 239000010720 hydraulic oil Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 ore Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- Safety Valves (AREA)
- Details Of Valves (AREA)
Abstract
The utility model relates to a reversing valve sleeve for a breaking hammer, which belongs to the technical field of reversing valves and comprises a sleeve body, wherein a pressure relief groove I is formed in one end of the sleeve body along the axial direction, a ring groove communicated with the pressure relief groove I is formed in the circumferential direction of the sleeve body, a pressure relief groove II communicated with the ring groove is formed in the sleeve body, and the pressure relief groove I and the pressure relief groove II are communicated with the two ends of the ring groove in a staggered manner. The impact shock absorber has the advantages of being not easy to deform, increasing the impact force, reducing the internal unloading force and being long in service life.
Description
Technical Field
The utility model relates to a reversing valve sleeve for a breaking hammer, and belongs to the technical field of reversing valves.
Background
The breaking hammer is an important working tool of the hydraulic excavator, the hydraulic pressure is used as power to drive the piston to reciprocate, the piston impacts the drill rod at a high speed during the stroke, and the drill rod breaks the solids such as ore, concrete and the like; the reversing valve is an important part in the breaking hammer, and can realize reciprocating driving of the piston rod under the cooperation of the reversing valve; when the breaking hammer works, the valve sleeve in the reversing valve reciprocates, so that the service life of the valve sleeve has an important influence on the service life of the reversing valve and even the breaking hammer.
Related Chinese patent publication No. CN210240618U discloses a pressure breaker reversing valve, which comprises a valve seat, wherein a slide valve and a valve sleeve are arranged in the valve seat, the slide valve sleeve is arranged in the valve sleeve, a main runner hole is formed in the slide valve, the main runner hole is communicated with openings at two ends of the reversing valve seat, and a first valve cover is arranged at one end of the valve sleeve, which is positioned at the opening of the valve seat.
The inventor considers that when the reversing valve is used, the valve sleeve can bear certain force due to the stress effect, and the valve sleeve is easy to deform after long-time operation; in addition, the valve sleeve slides under the action of hydraulic oil, when the hydraulic oil pressure is high, the force born by the valve sleeve is large, and the valve sleeve is easy to collide, so that the whole service life of the reversing valve is influenced.
Disclosure of Invention
The utility model provides a reversing valve sleeve for a breaking hammer, which aims at the defects existing in the prior art.
The technical scheme for solving the technical problems is as follows: the reversing valve sleeve for the breaking hammer comprises a sleeve body, a first pressure relief groove is formed in one end of the sleeve body along the axial direction, a ring groove communicated with the first pressure relief groove is formed in the sleeve body along the circumferential direction, a second pressure relief groove communicated with the ring groove is formed in the sleeve body, and the first pressure relief groove and the second pressure relief groove are communicated with the two ends of the ring groove in a staggered mode.
Based on the technical scheme, the utility model can also be improved as follows:
further, the first pressure relief grooves are formed in six, the first pressure relief grooves are uniformly distributed on the outer side of the sleeve body, the second pressure relief grooves also comprise six, and the second pressure relief grooves are uniformly distributed on the outer side of the sleeve body.
Furthermore, the pressure relief groove I and the pressure relief groove II are semicircular grooves.
Further, the depth of the first pressure relief groove is M, the outer diameter of the first pressure relief groove is L, and the relation between M and L satisfies: (L/151) < M < (L/127).
Further, the depth of the pressure relief groove II is N, the outer diameter of the sleeve body where the pressure relief groove II is arranged is K, and the relation between N and K satisfies the following conditions: (K/142) < N < (K/119).
Further, a first valve hole is formed in the middle of the sleeve body, and the first valve hole is a waist-shaped hole.
Further, the width of the valve hole at the widest part is denoted as P, the length of the valve hole at the longest part is denoted as O, and the relationship between P and O satisfies: (O/2) < P < O.
Further, an annular groove is formed in one end, far away from the first pressure relief groove, of the sleeve body, and a second valve hole is formed in the annular groove of the sleeve body.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the valve sleeve, the first pressure relief groove and the second pressure relief groove are arranged, when the valve sleeve slides, the pressure relief is conveniently carried out on hydraulic oil through the first pressure relief groove and the second pressure relief groove, so that the stress effect on the valve sleeve can be reduced, the problems of deformation and strain of the valve sleeve can be reduced, meanwhile, the impact of the valve sleeve can be reduced, and the service life of the reversing valve is ensured;
2. this application is through setting up pressure release groove one and pressure release groove two into the semicircle groove, can further improve the pressure release effect, reduces the stress of valve pocket, and sets up six with pressure release groove one and pressure release groove two respectively, multiplicable quartering hammer's impact force, reduces interior unloading.
Drawings
FIG. 1 is a schematic illustration of a reversing valve housing for a breaking hammer according to an embodiment of the present application;
FIG. 2 is a schematic view of a structure of a first salient valve hole in an embodiment of the present application;
FIG. 3 is a schematic diagram showing a structure of a first pressure relief groove according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a second salient pressure relief groove in the embodiment of the present application.
In the figure, 1, a sleeve body; 2. a pressure relief groove I; 3. a ring groove; 4. a pressure relief groove II; 5. a valve hole I; 6. circular ring grooves; 7. and a valve hole II.
Detailed Description
In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.
As shown in fig. 1, a reversing valve sleeve for a breaking hammer comprises a sleeve body 1, wherein a pressure relief groove I2 is formed in one end of the sleeve body 1 along the axial direction, a ring groove 3 communicated with the pressure relief groove I2 along the circumferential direction is formed in the sleeve body 1, a pressure relief groove II 4 communicated with the ring groove 3 is formed in the sleeve body 1, the pressure relief groove I2 and the pressure relief groove II 4 are alternately communicated with two ends of the ring groove 3, when the breaking hammer works, the valve sleeve moves left and right in the reversing valve, pressure relief is conveniently carried out on hydraulic oil through the pressure relief groove I2 and the pressure relief groove II 4, the problem that the valve sleeve impacts other parts of the reversing valve due to overlarge oil pressure can be reduced, and therefore the service life of the reversing valve can be ensured; in addition, the problems of deformation and strain caused by stress action after the sleeve body 1 is stressed can be reduced.
As shown in fig. 1, the first pressure release groove 2 is provided with six pressure release grooves, the first pressure release groove 2 is uniformly distributed on the outer side of the sleeve body 1, the second pressure release groove 4 also comprises six pressure release grooves, the second pressure release groove 4 is uniformly distributed on the outer side of the sleeve body 1, the first pressure release groove 2 and the second pressure release groove 4 are respectively provided with six pressure release grooves, the first pressure release groove 2 and the second pressure release groove 4 are uniformly distributed on the sleeve body 1, and the stress effect can be further reduced while uniform pressure release is realized, so that the service life of the sleeve body 1 is further ensured.
As shown in FIG. 1, the pressure relief groove I2 and the pressure relief groove II 4 are semicircular grooves, and the semicircular grooves have better pressure relief effect relative to the square grooves, and can further reduce the stress born by the valve sleeve.
As shown in fig. 1, 2 and 3, the depth of the pressure relief groove one 2 is M, the outer diameter of the position where the pressure relief groove one 2 is formed in the sleeve body 1 is L, and the relationship between M and L satisfies: when the depth of the first pressure relief groove 2 and the outer diameter of the sleeve body 1 meet the above relation, the sleeve body 1 can ensure the optimal pressure relief effect and the optimal stress reduction effect.
As shown in fig. 1, 2 and 4, the depth of the pressure relief groove two 4 is N, the outer diameter of the position where the pressure relief groove two 4 is formed in the sleeve body 1 is K, and the relationship between N and K satisfies: when the depth of the second pressure relief groove 4 and the outer diameter of the sleeve body 1 meet the relational expression, the optimal pressure relief effect of the pressure relief groove can be ensured, the striking force of the breaking hammer can be further ensured, and the internal unloading of the breaking hammer can be reduced.
As shown in fig. 1 and 2, a first valve hole 5 is formed in the middle of the sleeve body 1, a circular ring groove 6 is formed at one end, away from the first pressure relief groove 2, of the sleeve body 1, and a second valve hole 7 is formed in the circular ring groove 6 of the sleeve body 1; a first valve hole 5 and a second valve hole 7 are formed, so that hydraulic oil can be conveniently discharged through the first valve hole 5 and the second valve hole 7; experiments show that the first valve hole 5 is a waist-shaped hole, compared with the first valve hole 5 which is a round hole, the pressure relief effect can be improved, meanwhile, the impact of pressure relief oil on the sleeve body 1 can be reduced, and the service life of the sleeve body 1 is further guaranteed.
As shown in fig. 1 and 2, the width of the valve hole 5 at the widest point is denoted as P, the length of the valve hole 5 at the longest point is denoted as O, and the relationship between P and O satisfies: when the length and the width of the valve hole I5 meet the relation, the optimal pressure relief effect of the valve hole I5 can be ensured, and meanwhile, the strength of the position of the sleeve body 1 where the valve hole I5 is formed can be ensured.
Example 1
In this embodiment, M is equal to (L/148), N is equal to (K/140), the first valve hole is a waist-shaped hole, and O is equal to (5O/8).
Example 2
This embodiment differs from embodiment 1 in that M is equal in size to (L/135), N is equal to (K/130), valve bore one is a kidney-shaped bore, and O is equal to (3O/4).
Example 3
This embodiment differs from embodiment 1 in that M is equal in size to (L/121), N is equal to (K/120), valve bore one is a kidney-shaped bore, and O is equal to (9O/10).
Comparative example 1
This comparative example differs from example 1 in that M is equal in size to (L/155) and N is equal to (K/145).
Comparative example 2
This comparative example differs from example 1 in that M is equal in size to (L/115) and N is equal to (K/110).
Comparative example 3
The present comparative example is different from example 1 in that the first valve hole is a circular hole.
After the valve sleeves obtained in examples 1-3 and comparative examples 1-3 were installed in the breaking hammer, weights were hit using breaking hammer, and the time of use of the valve sleeve before failure in the breaking hammer, which is the service life of the valve sleeve, was recorded and collated, table 1:
TABLE 1 service life of examples 1-3 and comparative examples 1-3 samples
| Sample of | Service life (/ h) |
| Example 1 | 1323 |
| Example 2 | 1478 |
| Example 3 | 1347 |
| Comparative example 1 | 865 |
| Comparative example 2 | 843 |
| Comparative example 3 | 733 |
Analysis of test results:
1. it can be seen from examples 1 to 3 that when the depth M of the relief groove one and the outer diameter L of the sleeve body satisfy the relation:
when (L/150) < M < (L/120), the depth N of the pressure relief groove II and the outer diameter K of the sleeve body meet the relation:
when (K/142) < N < (K/119), the first valve hole is a waist-shaped hole, and the width P of the first valve hole and the length O of the first valve hole satisfy: when (O/2) is less than P and less than O, the service lives of the valve sleeves are all more than 1300h, so that the sizes of the first pressure relief groove, the second pressure relief groove and the first valve hole are limited, the service lives of the valve sleeves can be ensured, and the problem of reduction of the service lives of the breaking hammers caused by damage of the valve sleeves can be solved;
2. it can be seen from examples 1 to 3 and comparative examples 1 to 3 that when the depth M of the relief groove one and the outer diameter L of the sleeve do not satisfy the relation: when (L/150) < M < (L/120), the depth N of the pressure relief groove II and the outer diameter K of the sleeve body do not meet the relation: when (K/142) < N < (K/119), when the valve hole I is a circular hole, the service life of the valve sleeve is greatly influenced, and the service life of the valve sleeve is less than 900h, so that the necessity of limiting the sizes of the pressure relief groove I, the pressure relief groove II and the valve hole I in the application is illustrated.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (4)
1. A reversing valve housing for a breaking hammer, characterized by: the novel pressure relief sleeve comprises a sleeve body (1), wherein a pressure relief groove I (2) is formed in one end of the sleeve body (1) along the axial direction, a ring groove (3) which is communicated with the pressure relief groove I (2) along the circumferential direction is formed in the sleeve body (1), a pressure relief groove II (4) which is communicated with the ring groove (3) is formed in the sleeve body (1), and the pressure relief groove I (2) and the pressure relief groove II (4) are communicated with the two ends of the ring groove (3) in a staggered mode;
the depth of the pressure relief groove I (2) is M, the outer diameter of the sleeve body (1) where the pressure relief groove I (2) is arranged is L, and the relation between M and L satisfies: (L/150) < M < (L/120);
the depth of the pressure relief groove II (4) is N, the outer diameter of the sleeve body (1) where the pressure relief groove II (4) is arranged is K, and the relation between N and K satisfies: (K/142) < N < (K/119);
a first valve hole (5) is formed in the middle of the sleeve body (1), and the first valve hole (5) is a waist-shaped hole;
the width of the widest part of the valve hole I (5) is expressed as P, the length of the longest part of the valve hole I (5) is expressed as O, and the relation between P and O satisfies the following conditions: (O/2) < P < O.
2. A reversing valve housing for a breaking hammer according to claim 1, characterized in that: six pressure release grooves I (2) are formed, six pressure release grooves I (2) are uniformly distributed on the outer side of the sleeve body (1), pressure release grooves II (4) also comprise six pressure release grooves, and six pressure release grooves II (4) are uniformly distributed on the outer side of the sleeve body (1).
3. A reversing valve housing for a breaking hammer according to claim 1, characterized in that: the pressure relief groove I (2) and the pressure relief groove II (4) are semicircular grooves.
4. A reversing valve housing for a breaking hammer according to claim 1, characterized in that: the sleeve body (1) is far away from one end of the pressure relief groove I (2) and is provided with a circular ring groove (6), and the sleeve body (1) is provided with a valve hole II (7) in the circular ring groove (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321104171.XU CN220248984U (en) | 2023-05-06 | 2023-05-06 | Reversing valve sleeve for breaking hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321104171.XU CN220248984U (en) | 2023-05-06 | 2023-05-06 | Reversing valve sleeve for breaking hammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220248984U true CN220248984U (en) | 2023-12-26 |
Family
ID=89266641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321104171.XU Active CN220248984U (en) | 2023-05-06 | 2023-05-06 | Reversing valve sleeve for breaking hammer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220248984U (en) |
-
2023
- 2023-05-06 CN CN202321104171.XU patent/CN220248984U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |