CN221054282U - Cylinder body oilhole seal structure in quartering hammer - Google Patents
Cylinder body oilhole seal structure in quartering hammer Download PDFInfo
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- CN221054282U CN221054282U CN202323107845.4U CN202323107845U CN221054282U CN 221054282 U CN221054282 U CN 221054282U CN 202323107845 U CN202323107845 U CN 202323107845U CN 221054282 U CN221054282 U CN 221054282U
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- middle cylinder
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- 238000007789 sealing Methods 0.000 claims abstract description 190
- 239000003921 oil Substances 0.000 claims description 25
- 239000010727 cylinder oil Substances 0.000 claims description 19
- 230000003068 static effect Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 9
- 230000009471 action Effects 0.000 description 6
- 238000001746 injection moulding Methods 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000010734 process oil Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model belongs to the technical field of hydraulic breaking hammers, and particularly relates to a sealing structure of an oil hole of a middle cylinder body of a breaking hammer, which is positioned at the joint of the middle cylinder body and an upper cylinder body and is used for sealing the oil hole of the middle cylinder body, and comprises a sealing sinking groove and a sealing unit, wherein the sealing sinking groove is arranged at the end surface of the oil hole of the middle cylinder body, the sealing unit is arranged in the sealing sinking groove, and the sealing unit comprises a first sealing piece and a second sealing piece; one end of the first sealing piece is abutted against the end face of the oil hole of the middle cylinder body, and the other end of the first sealing piece is embedded with one end of the second sealing piece; the other end of the second sealing piece is abutted with the upper cylinder body. According to the utility model, the sealing effect is realized by matching the sealing unit with the sealing sinking groove and extruding the sealing unit by the upper cylinder body, so that the sealing reliability is high.
Description
Technical Field
The utility model relates to the technical field of hydraulic breaking hammers, in particular to a cylinder oil hole sealing structure in a breaking hammer.
Background
The hydraulic breaking hammer takes the hydraulic pump as a power source, oil pressure as power, and high-frequency reciprocating motion of the breaker piston in the cylinder body is realized by means of high-pressure oil output by the working machine during working, so that the drill rod is hit, work is done outwards to carry out breaking work, and the hydraulic breaking hammer is extremely important for sealing work of an oil hole of the cylinder body in the hydraulic breaking hammer.
At present, the process oil holes of the cylinder body in the hydraulic breaking hammer are mostly sealed in a welding mode, and in the working process of the breaking hammer, the oil hole welding position can fall off due to the impact of oil pressure, so that the sealing effect is lost. To the problem that exists in prior art, a great deal of effort has been made in the art, and as chinese patent application 2012205925560 discloses a novel hydraulic breaking hammer end cap, is connected back cylinder body and end cap through the screw thread to scribble the sealing gum that exempts from to wash in screw thread department in order to realize sealed effect, but screw thread and sealing gum receive the impact easily and become flexible in long-time use, and sealing reliability is weaker.
Disclosure of utility model
In order to solve the problems, the utility model provides the cylinder oil hole sealing structure in the breaking hammer, which realizes the sealing effect by matching the sealing unit with the sealing sinking groove and extruding the sealing unit by the upper cylinder body, and has high sealing reliability.
In order to achieve the purpose, the technical scheme adopted by the utility model is that the oil hole sealing structure of the middle cylinder body of the breaking hammer is positioned at the joint of the middle cylinder body and the upper cylinder body and is used for sealing the oil hole of the middle cylinder body; comprises a sealing sink and a sealing unit; the sealing sink groove is arranged at the end face of the oil hole of the middle cylinder body; the sealing unit is arranged in the sealing sink; the sealing unit comprises a first sealing piece and a second sealing piece; one end of the first sealing piece is abutted against the end face of the oil hole of the middle cylinder body, and the other end of the first sealing piece is embedded with one end of the second sealing piece; the other end of the second sealing piece is abutted against the upper cylinder body.
Further, a first abutting part is arranged on one side of the first sealing element, and a first connecting part is arranged on the other side of the first sealing element; one side of the second sealing element is provided with a second abutting part, and the other side of the second sealing element is provided with a second connecting part; the second connecting part is provided with a connecting groove; the first sealing piece and the second sealing piece are connected with the connecting groove in a jogged mode through the first connecting part, and are respectively abutted with the middle cylinder oil hole and the upper cylinder through the first abutting part and the second abutting part.
Further, an annular sealing groove is formed in the side wall of the second sealing piece; an O-shaped sealing ring and a sealing retainer ring are arranged in the annular sealing groove in parallel.
Further, the O-shaped sealing ring is positioned in the positive direction of oil pressure and is used for being matched with the sealing sink groove to play a role in static sealing; and the sealing check ring is positioned in the opposite direction of the oil pressure and is used for preventing the O-shaped sealing ring from being extruded.
Further, the side wall of the sealing unit is attached to the side wall of the sealing sink.
The technical scheme of the utility model has the beneficial effects that:
1. The sealing sinking groove is formed in the end face of the middle cylinder oil hole, the sealing unit is matched with the sealing sinking groove, the upper cylinder body is made to squeeze the sealing unit, so that the sealing effect of the middle cylinder oil hole is achieved, the problem that the sealing is easy to loosen due to the fact that the threaded connection mode is used for sealing is avoided, and the sealing effect with high reliability is achieved.
2. The sealing unit and the sealing sinking groove realize the sealing purpose in an assembling mode, so that the problem of weld neck cracking in a welding mode is avoided, the problems of tap fracture, repair and sliding teeth caused by thread processing are avoided, and the cylinder body processing difficulty is reduced.
3. The whole structure of the utility model is assembled by the sealing unit and the sealing sink, has simple structure, is convenient and quick to disassemble, is convenient to maintain and clean, and improves the assembly production efficiency.
4. The first abutting part in the first sealing piece is abutted against the end face of the oil hole of the middle cylinder body, so that the impact and corrosion of hydraulic oil can be effectively resisted, the risk of pollution of the plug to a hydraulic system due to corrosion is reduced, the second sealing piece is protected, and the service life is effectively prolonged.
Drawings
In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
Fig. 1 is a schematic diagram of the positional relationship between the oil hole sealing structure of the middle cylinder body and the upper cylinder body of the breaking hammer.
Fig. 2 is an enlarged view of fig. 1 at i.
Fig. 3 is a cross-sectional view of the seal unit structure.
Fig. 4 is a schematic view of the first seal prior to injection molding.
Fig. 5 is a schematic view of the first seal after injection molding.
Fig. 6 is a schematic diagram of a second seal configuration.
The device comprises a 1-middle cylinder body, an 11-sealing unit, a 111-first sealing piece, a 1111-first abutting part, a 1112-first connecting part, a 112-second sealing piece, a 1121-second connecting part, a 11211-connecting groove, a 1122-second abutting part, a 1123-O-shaped sealing ring, a 1124-sealing retainer ring, a 1125-annular sealing groove, a 12-sealing sink, a 13-middle cylinder body oil hole, a 2-upper cylinder body and a 3-lower cylinder body.
Detailed Description
The following description of the present utility model is provided with reference to the accompanying drawings, but is not limited to the following description, and any modifications or equivalent substitutions of the present utility model should be included in the scope of the present utility model without departing from the spirit and scope of the present utility model.
As shown in fig. 1 and 2, the embodiment provides a sealing structure of a cylinder oil hole 13 in a breaking hammer, which is located at a joint of a middle cylinder 1 and an upper cylinder 2 and is used for sealing the middle cylinder oil hole 13, and comprises a sealing sink 12 and a sealing unit 11, wherein the sealing sink 12 is located at the end face of the middle cylinder oil hole 13, the left end face of the sealing sink 12 coincides with the end face of the middle cylinder oil hole 13, and the inner diameter of the sealing sink 12 is larger than the outer diameter of the middle cylinder oil hole 13. The sealing unit 11 is arranged in the sealing sink 12, the sealing unit 11 comprises a first sealing piece 111 and a second sealing piece 112, one end of the first sealing piece 111 is abutted against the middle cylinder oil hole 13, the other end of the first sealing piece is embedded with the second sealing piece 112, and the other end of the second sealing piece 112 is abutted against the upper cylinder 2.
As shown in fig. 3, 4, 5 and 6, the first seal 111 and the second seal 112 are each cylindrical; the first sealing piece 111 is positioned at the left side in the sealing sink 12, the first sealing piece 111 comprises a first abutting part 1111 and a first connecting part 1112, the side wall of the first abutting part 1111 is attached to the side wall of the sealing sink 12, the left end is attached to the end face of the middle cylinder oil hole 13, the first connecting part 1112 is in a T shape and is matched with the connecting groove 11211, and the first sealing piece 111 is embedded with the second sealing piece 112 through the first connecting part 1112; the side surface of the second sealing element 112 is attached to the sealing sink 12, the second sealing element 112 comprises a second abutting part 1122 and a second connecting part 1121, the second connecting part 1121 is positioned at the left side, a connecting groove 11211 is formed in the second connecting part 1121, the connecting groove 11211 is in a T shape, the second abutting part 1122 is positioned at the right side and is cylindrical, the right end surface of the second abutting part 1122 is attached to the upper cylinder body 2, and the upper cylinder body 2 forms an extrusion effect on the second abutting part 1122; an annular sealing groove 1125 is arranged in the middle of the side wall of the second sealing piece 112, an O-shaped sealing ring and a sealing retainer ring 1124 are arranged in the annular sealing groove 1125, wherein the O-shaped sealing ring is positioned at the left side and is positioned in the positive direction of oil pressure and is used for being matched with the sealing sink 12 to form a cylindrical static sealing effect; the sealing collar 1124 is arranged on the right side of the O-ring and is opposite to the oil pressure, and the right end face of the sealing collar 1124 is attached to the right end face of the annular sealing groove 1125, so as to prevent the O-ring from extrusion due to the oil pressure.
Preferably, the first sealing element 111 is a special sealing plug, wherein the first abutting part 1111 is a wear-resistant alloy head, and is made of a hard alloy material, so that the sealing plug has the advantages of high hardness, good wear resistance, heat resistance and corrosion resistance; the first connection portion 1112 is made of plastic material by injection molding. The second sealing member 112 is a vibration damping sealing column, and is made of polytetrafluoroethylene material, and has the advantages of good high temperature resistance, low temperature resistance, corrosion resistance, wear resistance, high chemical stability, high toughness and high strength.
During manufacturing, the right end face of the first abutting part 1111 is attached to the left end face of the second sealing member 112, plastic material is injected into the connecting groove 11211 through the pouring hole on the second connecting part 1121, after the plastic material is cooled, the first connecting part 1112 can be manufactured by an injection molding method, at this time, the first connecting part 1112 and the connecting groove 11211 are perfectly embedded, the left end of the first connecting part 1112 is adhered to the first abutting part 1111 to form the first sealing member 111 in an I-shaped structure, and thus the sealing unit 11 formed by embedding the first sealing member 111 and the second sealing member 112 is obtained.
Preferably, when the second seal 112 is installed, the sealing medium such as grease is uniformly spread on the annular sealing groove 1125 and the O-ring for further sealing and lubrication.
Preferably, the left end surface of the first abutting portion 1111 is high in machining precision and flatness, and the machining precision is high, so that the degree of adhesion between the first abutting portion 1111 and the end surface of the middle cylinder oil hole 13 and the left end surface of the seal sinking groove 12 is increased.
Working principle:
When the sealing device is used, the first connecting part 1112 is prepared by an injection molding preparation method, the first connecting part 1112 is connected with the first abutting part 1111, the first sealing piece 111 and the second sealing piece 112 are embedded to form the sealing unit 11, the sealing unit 11 is arranged in the sealing sink 12, the upper cylinder body 2 is connected with the middle cylinder body 1, the sealing unit 11 abuts against the upper cylinder body 2, so that the upper cylinder body 2 can squeeze the sealing unit 11, at the moment, the sealing unit 11 is compressed due to the good toughness of the first connecting part 1112 and the second sealing piece 112, so that a continuous pressure can be formed on the first abutting part 1111, the first abutting part 1111 is tightly abutted against the middle cylinder body oil hole 13, and meanwhile, under the squeezing action, the O-shaped sealing ring is compressed and deformed simultaneously, so that the O-shaped sealing ring is matched with the side wall of the sealing sink 12 to form a cylindrical static sealing effect. The sealing action of the first abutting part 1111 on the oil hole and the cylindrical static sealing action of the O-shaped sealing ring are combined to form a good sealing action on the oil hole 13 of the centering cylinder body; in addition, under the extrusion action of the upper cylinder body 2, the sealing check ring 1124 is tightly attached to the O-shaped sealing ring under the pressure action, so that a blocking action is formed on the O-shaped sealing ring, and the phenomenon that the O-shaped sealing ring is extruded when the O-shaped sealing ring is subjected to excessive pressure is prevented.
Preferably, since the first sealing member 111 and the second sealing member 112 have good toughness, they can form a buffering effect on impact force generated when the hydraulic breaking hammer works, so that the sealing unit 11 can be prevented from being damaged under the impact force in the long term, and the service life of the hydraulic breaking hammer is prolonged.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.
Claims (5)
1. The sealing structure of the oil hole (13) of the middle cylinder body of the breaking hammer is positioned at the joint of the middle cylinder body (1) and the upper cylinder body (2) and is used for sealing the oil hole (13) of the middle cylinder body; the sealing device is characterized by comprising a sealing sink (12) and a sealing unit (11); the sealing sink groove (12) is arranged at the end face of the middle cylinder oil hole (13); the sealing unit (11) is arranged in the sealing sink (12); the sealing unit (11) comprises a first seal (111) and a second seal (112); one end of the first sealing piece (111) is abutted against the end face of the middle cylinder body oil hole (13), and the other end of the first sealing piece is embedded with one end of the second sealing piece (112); the other end of the second sealing piece (112) is abutted with the upper cylinder body (2).
2. The cylinder oil hole (13) sealing structure in a breaking hammer according to claim 1, wherein a first abutting portion (1111) is provided on one side of the first sealing member (111), and a first connecting portion (1112) is provided on the other side; a second abutting part (1122) is arranged on one side of the second sealing element (112), and a second connecting part (1121) is arranged on the other side; a connecting groove (11211) is arranged on the second connecting part (1121); the first seal (111) and the second seal (112) are connected with the connecting groove (11211) in a jogged way through the first connecting part (1112), and are respectively abutted with the middle cylinder oil hole (13) and the upper cylinder (2) through the first abutting part (1111) and the second abutting part (1122).
3. The cylinder oil hole (13) sealing structure in the breaking hammer according to claim 1, wherein an annular sealing groove (1125) is provided on a side wall of the second sealing member (112); an O-shaped sealing ring (1123) and a sealing retainer ring (1124) are arranged in the annular sealing groove (1125) in parallel.
4. The sealing structure of the cylinder oil hole (13) in the breaking hammer according to claim 3, wherein the O-ring (1123) is located in the positive direction of the oil pressure and is used for being matched with the sealing sink (12) to play a static sealing role; the sealing collar (1124) is located opposite to the oil pressure for preventing the O-ring (1123) from being squeezed out.
5. The cylinder oil hole (13) sealing structure in a breaking hammer according to claim 1, wherein the side wall of the sealing unit (11) is attached to the side wall of the sealing sink (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323107845.4U CN221054282U (en) | 2023-11-17 | 2023-11-17 | Cylinder body oilhole seal structure in quartering hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323107845.4U CN221054282U (en) | 2023-11-17 | 2023-11-17 | Cylinder body oilhole seal structure in quartering hammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221054282U true CN221054282U (en) | 2024-05-31 |
Family
ID=91198529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323107845.4U Active CN221054282U (en) | 2023-11-17 | 2023-11-17 | Cylinder body oilhole seal structure in quartering hammer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221054282U (en) |
-
2023
- 2023-11-17 CN CN202323107845.4U patent/CN221054282U/en active Active
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