CN220668568U - Pedal valve plunger sealing structure for excavator - Google Patents
Pedal valve plunger sealing structure for excavator Download PDFInfo
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- CN220668568U CN220668568U CN202322330478.8U CN202322330478U CN220668568U CN 220668568 U CN220668568 U CN 220668568U CN 202322330478 U CN202322330478 U CN 202322330478U CN 220668568 U CN220668568 U CN 220668568U
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- Prior art keywords
- plunger
- fixedly connected
- sealing
- groove
- valve body
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Links
- 238000007789 sealing Methods 0.000 title claims abstract description 76
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 19
- 239000000741 silica gel Substances 0.000 claims description 19
- 229910002027 silica gel Inorganic materials 0.000 claims description 19
- 239000000428 dust Substances 0.000 claims description 13
- -1 polytetrafluoroethylene Polymers 0.000 claims description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 claims description 2
- 239000010720 hydraulic oil Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Mechanically-Actuated Valves (AREA)
Abstract
The utility model discloses a pedal valve plunger sealing structure for an excavator, which belongs to the field of excavators and comprises a valve body, wherein a guide hole is formed in the valve body, a plunger is connected in the guide hole in a sliding manner, sliding grooves are formed in the periphery of the inner side wall of the valve body, annular sealing gaskets are fixedly connected to the inner top wall and the inner top wall of each sliding groove, sealing rings are fixedly connected to the two sides of the outer side wall of the plunger, and sealing sleeves are fixedly connected to the outer side wall of each sealing ring; through valve body, guiding hole, plunger, spout, annular seal pad, sealing ring and seal cover's cooperation, when not stepping on the excavator pedal, seal cover butt is located the annular seal pad of spout top, and then seals the guiding hole, and when stepping on the excavator pedal, seal cover butt is located the annular seal pad of diapire in the spout, seals the guiding hole, when guaranteeing the structure leakproofness, the friction between when minimizing the plunger removal and the seal structure improves structure life.
Description
Technical Field
The utility model belongs to the technical field of excavators, and particularly relates to a pedal valve plunger sealing structure for an excavator.
Background
The excavator pilot hydraulic system is an important component in the excavator hydraulic system. The pedal valve is a main part forming a pilot hydraulic system of the excavator, and the tightness of the pedal valve seriously influences the service life of the pedal valve, so that the overall image of the whole excavator is influenced, and the trust degree of a user on the whole excavator and brands is reduced.
The current chinese patent with publication number CN208900823U discloses a novel foot valve plunger seal structure for excavator, which comprises a valve body, be provided with the guiding hole on the valve body, be connected with the plunger that can remove along guiding hole axis direction in the guiding hole, be provided with first slot and the second slot that is located first slot below on the guiding hole inner wall, be connected with the dust ring that links to each other with the plunger simultaneously on the first slot, be connected with the sealing washer that links to each other with the plunger simultaneously on the second slot.
With respect to the related art as described above, the inventors found that there are at least the following problems in this technology: although this structure can effectively improve the leakproofness between plunger and the valve body, but sealing washer and dust ring all with plunger side interference fit, when the plunger removes, can produce serious wearing and tearing between plunger and sealing washer and the dust ring, and then influence device life.
Disclosure of Invention
The utility model aims to provide a pedal valve plunger sealing structure for an excavator, which aims to solve the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a pedal valve plunger seal structure for excavator, includes the valve body, be provided with the guiding hole on the valve body, the inside sliding connection of guiding hole has the plunger, the spout has all been seted up around the valve body inside wall, the equal fixedly connected with annular sealing pad of interior roof and interior roof of spout, the both sides fixedly connected with sealing ring of plunger lateral wall, the lateral wall fixedly connected with seal cover of sealing ring.
As a preferred implementation mode, auxiliary sealing grooves are formed in the periphery of the inner side wall of the guide hole below the sliding groove, auxiliary sealing rings are connected to the inner side of the auxiliary sealing grooves in a sliding mode, pushing grooves communicated with the auxiliary sealing grooves are formed in the periphery of the inner side wall of the sliding groove, pushing rods are connected to the inner side of the pushing grooves in a sliding mode, one ends, close to the plungers, of the pushing rods are fixedly connected to the outer side wall of the plungers and located between the two sealing rings, one ends, far away from the plungers, of the pushing rods are fixedly connected with first inclined sliding blocks, one side, close to the first inclined sliding blocks, of the outer side wall of the auxiliary sealing rings is fixedly connected with second inclined sliding blocks matched with the first inclined sliding blocks, springs are fixedly connected to the two ends, far away from the one sides, close to the one sides, of the inner side walls of the auxiliary sealing rings, of the auxiliary sealing rings are fixedly connected to the two sides of the inner side walls of the auxiliary sealing grooves.
As a preferred embodiment, a silica gel dust cover is arranged between the valve body and the plunger.
As a preferred implementation mode, the connecting ring is fixedly connected to the periphery of the upper surface of the valve body, which is positioned on the guide hole, the periphery of the outer side wall of the connecting ring is provided with the first clamping groove, and the periphery of the outer side wall of the plunger is provided with the second clamping groove.
As a preferred embodiment, the inner side wall of the auxiliary sealing groove is provided with a polytetrafluoroethylene coating.
As a preferable implementation mode, the upper surface of the valve body is fixedly connected with a spacer ring at one side, which is positioned around the guide hole and is close to the guide hole.
Compared with the prior art, the utility model has the beneficial effects that:
according to the pedal valve plunger sealing structure for the excavator, through the cooperation of the valve body, the guide hole, the plunger, the sliding groove, the annular sealing gasket, the sealing ring and the sealing sleeve, when the pedal of the excavator is not stepped on in use, the sealing sleeve on the outer side wall of the sealing ring and the sealing sleeve are abutted against the annular sealing gasket positioned above the sliding groove, so that the guide hole is sealed, dust is prevented from entering, when the pedal of the excavator is stepped on, the sealing sleeve on the outer side wall of the sealing ring and the sealing sleeve are abutted against the annular sealing gasket positioned on the inner bottom wall of the sliding groove, the guide hole is sealed, hydraulic oil is prevented from overflowing, friction between the plunger and the sealing structure is reduced as much as possible when the structural tightness is guaranteed, and the service life of the structure is prolonged;
this pedal valve plunger seal structure for excavator, through the cooperation of auxiliary seal circle, push away groove, push rod, first slope slider, second slope slider and spring, when using, when not stepping on the excavator pedal, the spring stretches, auxiliary seal circle butt plunger seals the guiding hole, prevent hydraulic oil seepage to in the spout, when stepping on the excavator pedal, the plunger drives the push rod and moves down, first slope slider moves down, the spring resets, drive auxiliary seal circle and keep away from the plunger, prevent the plunger when moving with auxiliary seal circle mutual friction, influence device life.
Drawings
FIG. 1 is a schematic perspective view of a plunger according to the present utility model;
FIG. 2 is a schematic side cross-sectional view of the present utility model;
fig. 3 is an enlarged schematic view of the structure a in fig. 2 according to the present utility model.
In the figure: 1. a valve body; 2. a guide hole; 3. a plunger; 4. a chute; 5. an annular gasket; 6. a seal ring; 7. sealing sleeve; 8. an auxiliary seal groove; 9. an auxiliary sealing ring; 10. pushing grooves; 11. a push rod; 12. a first tilt slider; 13. a second tilt slider; 14. a spring; 15. a silica gel dust cover; 16. a connecting ring; 17. a first clamping groove; 18. a second clamping groove; 19. a polytetrafluoroethylene coating; 20. and a spacer ring.
Detailed Description
The utility model is further described below with reference to examples.
The following examples are illustrative of the present utility model but are not intended to limit the scope of the utility model. The conditions in the examples can be further adjusted according to specific conditions, and simple modifications of the method of the utility model under the premise of the conception of the utility model are all within the scope of the utility model as claimed.
Referring to fig. 1-3, the utility model provides a pedal valve plunger sealing structure for an excavator, which comprises a valve body 1, wherein a guide hole 2 is formed in the valve body 1, a plunger 3 is connected in a sliding manner in the guide hole 2, the top end of the plunger 3 is arranged on a pedal plate of the excavator, sliding grooves 4 are formed in the periphery of the inner side wall of the valve body 1, annular sealing gaskets 5 are fixedly connected to the inner top wall and the inner top wall of the sliding grooves 4, sealing rings 6 are fixedly connected to the two sides of the outer side wall of the plunger 3, sealing sleeves 7 are fixedly connected to the outer side wall of the sealing rings 6, when the pedal plate of the excavator is not stepped on, the sealing rings 6 and the sealing sleeves 7 of the outer side wall of the sealing rings 6 are abutted to the annular sealing gaskets 5 above the sliding grooves 4, dust is prevented from entering, and when the pedal plate of the excavator is stepped on, the sealing rings 6 and the sealing sleeves 7 of the outer side wall of the sealing rings 6 are abutted to the annular sealing gaskets 5 of the inner bottom wall of the sliding grooves 4, and hydraulic oil is prevented from overflowing.
Further, auxiliary seal groove 8 has been seted up to the below that is located spout 4 around the guiding hole 2 inside wall, auxiliary seal groove 8's inside sliding connection has auxiliary seal circle 9, auxiliary seal circle 9 is quarter ring seal circle, push away groove 10 that is linked together with auxiliary seal groove 8 has all been seted up around the spout 4 inside wall, push away groove 10's inside sliding connection has push rod 11, push rod 11 is close to plunger 3's one end fixed connection in plunger 3 lateral wall is located between two sealing rings 6, push rod 11 is kept away from plunger 3's one end fixedly connected with first slope slider 12, auxiliary seal circle 9 lateral wall is close to first slope slider 12's one side fixedly connected with and first slope slider 12 looks adaptation second slope slider 13, auxiliary seal circle 9 is kept away from plunger 3 one side's both ends fixedly connected with spring 14, spring 14 is kept away from auxiliary seal circle 9's one end fixedly connected with in auxiliary seal groove 8 both sides, when using, when not stepping on the excavator pedal, spring 14 stretches, auxiliary seal circle 9 butt plunger 3 seals guiding hole 2, prevent to leak to spout 4, when stepping on the excavator pedal, plunger 3 drives push rod 11 and moves down, first slope slider 12 moves down, the spring 9 is kept away from the auxiliary seal circle 9, when the mutual influence of auxiliary seal circle 9, when the device is kept away from moving to the plunger 9.
Further, a silica gel dust cover 15 is arranged between the valve body 1 and the plunger 3, and dust can be prevented from entering the guide hole 2 as much as possible through the arrangement of the silica gel dust cover 15.
Further, fixedly connected with go-between 16 around valve body 1 upper surface is located guiding hole 2, first draw-in groove 17 has been seted up around the go-between 16 lateral wall, second draw-in groove 18 has been seted up around the plunger 3 lateral wall, through go-between 16, the setting of first draw-in groove 17 and second draw-in groove 18, when needs installation silica gel dirt proof boot 15, place the thin mouthful department of silica gel dirt proof boot 15 in second draw-in groove 18 one side, place the thick mouthful department of silica gel dirt proof boot 15 in first draw-in groove 17 one side, bind the thick mouthful of silica gel dirt proof boot 15 in first draw-in groove 17 through the ribbon, and bind the thin mouthful of silica gel dirt proof boot 15 in second draw-in groove 18, and then accomplish the installation of silica gel dirt proof boot 15.
Further, the inner side wall of the auxiliary sealing groove 8 is provided with a polytetrafluoroethylene coating 19, and by the arrangement of the polytetrafluoroethylene coating 19, the abrasion between the auxiliary sealing ring 9 and the auxiliary sealing groove 8 during movement can be reduced as much as possible due to the good abrasion resistance and self-lubricity of polytetrafluoroethylene.
Further, the upper surface of the valve body 1 is located around the guide hole 2, one side close to the guide hole 2 is fixedly connected with the isolating ring 20, and through the arrangement of the isolating ring 20, the situation that the silica gel dust cover 15 is clamped at the joint of the plunger 3 and the guide hole 2 when the plunger 3 moves downwards can be avoided as much as possible, and the service life of the device is influenced.
The working principle and the using flow of the utility model are as follows: firstly, through the setting of go-between 16, first draw-in groove 17 and second draw-in groove 18, when needs installation silica gel dirt proof boot 15, place the thin mouthful department of silica gel dirt proof boot 15 in second draw-in groove 18 one side, place the thick mouthful department of silica gel dirt proof boot 15 in first draw-in groove 17 one side, bind the thick mouthful of silica gel dirt proof boot 15 in first draw-in groove 17 through the ribbon, and bind the thin mouthful of silica gel dirt proof boot 15 in second draw-in groove 18, and then accomplish the installation of silica gel dirt proof boot 15, silica gel dirt proof boot 15 can prevent as far as possible that dust from getting into guiding hole 2, when not stepping on the excavator pedal, spring 14 is tensile, auxiliary seal 9 butt plunger 3 seals guiding hole 2, prevent hydraulic oil seepage to spout 4, when stepping on the excavator pedal, plunger 3 drives push rod 11 downwardly moving, first slope slider 12 downwardly moves, spring 14 resets, drive auxiliary seal 9 keep away from plunger 3, prevent the mutual friction with auxiliary seal 9 when the plunger 3, influence device life, when not stepping on the excavator pedal 6 and sealing washer 7 are located in the sealing washer 6 side sealing washer 5, sealing washer 6 sealing washer 5 and sealing washer 5 are located to the lateral wall 5, sealing washer 6 sealing washer 5 and sealing washer 6 sealing washer 5 sealing washer 6 sealing lateral ring side.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a pedal valve plunger seal structure for excavator, includes valve body (1), its characterized in that: be provided with guiding hole (2) on valve body (1), the inside sliding connection of guiding hole (2) has plunger (3), spout (4) have all been seted up around the inside wall of valve body (1), the interior roof and the interior roof of spout (4) all fixedly connected with annular sealing pad (5), the both sides fixedly connected with sealing ring (6) of plunger (3) lateral wall, the lateral wall fixedly connected with seal cover (7) of sealing ring (6).
2. The foot valve plunger seal structure for an excavator according to claim 1, wherein: the utility model discloses a sealing device for a piston machine, including guiding hole (2) inside wall, auxiliary seal groove (8) have been seted up to the below that is located spout (4) all around to guiding hole (2) inside wall, auxiliary seal groove (8) inside sliding connection has auxiliary seal groove (9) all around, push away groove (10) that are linked together with auxiliary seal groove (8) all around of spout (4) inside wall, push away the inside sliding connection of groove (10) has push rod (11), the one end fixedly connected with that push rod (11) is close to plunger (3) lateral wall is located between two sealing rings (6), the one end fixedly connected with first slope slider (12) of plunger (3) are kept away from to push rod (11), one side fixedly connected with that auxiliary seal groove (9) lateral wall is close to first slope slider (12) and the second slope slider (13) of first slope slider (12) looks adaptation, the both ends fixedly connected with spring (14) of plunger (3) one side are kept away from to auxiliary seal groove (9), the one end fixedly connected with in the both sides of auxiliary seal groove (8) lateral wall are kept away from to spring (14).
3. The foot valve plunger seal structure for an excavator according to claim 1, wherein: a silica gel dust cover (15) is arranged between the valve body (1) and the plunger (3).
4. The foot valve plunger seal structure for an excavator according to claim 1, wherein: the valve is characterized in that a connecting ring (16) is fixedly connected to one side, away from the guide hole (2), of the upper surface of the valve body (1) located at the periphery of the guide hole (2), a first clamping groove (17) is formed in the periphery of the outer side wall of the connecting ring (16), and a second clamping groove (18) is formed in the periphery of the outer side wall of the plunger (3).
5. The foot valve plunger seal structure for an excavator according to claim 2, wherein: the inner side wall of the auxiliary sealing groove (8) is provided with a polytetrafluoroethylene coating (19).
6. The foot valve plunger seal structure for an excavator according to claim 1, wherein: the upper surface of the valve body (1) is positioned at one side, close to the guide hole (2), of the periphery of the guide hole (2) and is fixedly connected with a spacer ring (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322330478.8U CN220668568U (en) | 2023-08-29 | 2023-08-29 | Pedal valve plunger sealing structure for excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322330478.8U CN220668568U (en) | 2023-08-29 | 2023-08-29 | Pedal valve plunger sealing structure for excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220668568U true CN220668568U (en) | 2024-03-26 |
Family
ID=90333709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322330478.8U Active CN220668568U (en) | 2023-08-29 | 2023-08-29 | Pedal valve plunger sealing structure for excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220668568U (en) |
-
2023
- 2023-08-29 CN CN202322330478.8U patent/CN220668568U/en active Active
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