CN211287824U - Self-lubricating noise-reducing wear-resistant hydraulic tappet - Google Patents
Self-lubricating noise-reducing wear-resistant hydraulic tappet Download PDFInfo
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- CN211287824U CN211287824U CN201922244341.4U CN201922244341U CN211287824U CN 211287824 U CN211287824 U CN 211287824U CN 201922244341 U CN201922244341 U CN 201922244341U CN 211287824 U CN211287824 U CN 211287824U
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- plunger
- wear
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- resistant
- cam
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Abstract
The utility model relates to a stand wear and tear hydraulic tappet that falls of making an uproar falls in self-lubricating, including the cylinder and can be at the inside reciprocating motion's of cylinder plunger, plunger one end and air stem linkage, its characterized in that, be equipped with between plunger and the air stem with the air stem linkage and can with the cushion that the oil pressure chamber switched on, the cushion middle part is equipped with the cylindricality guide way with the air stem linkage along the axial, the one end that is close to the cam on the plunger is equipped with the pressure chamber with the cylinder cooperation, be equipped with the check valve subassembly with plunger one end linkage in the pressure chamber, the plunger is located inlet port below and is equipped with the even heat dissipation oilhole in a plurality of interval along the axial, the cylinder lower extreme is equipped with the wear-resisting guider with cam rolling contact, the beneficial effects of the utility: the hydraulic tappet can realize self lubrication and is wear-resistant, so that noise is effectively reduced.
Description
Technical Field
The utility model relates to a hydraulic tappet technical field, concretely relates to self-lubricating falls and makes an uproar stand wear and tear hydraulic tappet.
Background
In order to ensure that the valve is tightly closed, a proper clearance, namely a valve clearance, is reserved between the valve rod end and the valve driving piece, the valve clearance is small when the engine is in a hot state and is large when the engine is in a cold state, the valve clearance is changed due to expansion caused by heat and contraction caused by cold when the engine runs, the opening amount of the valve is influenced, and the hydraulic tappet is an important part in an engine valve mechanism and aims to adjust the valve clearance. The one end of the mutual frictional contact of hydraulic tappet and cam causes the hydraulic tappet wearing and tearing easily, and can generate heat and send out the noise, influences the performance of hydraulic tappet, has the air to mix when having in the high-pressure oil pocket of hydraulic tappet, can lead to valve lift loss to increase, also can arouse noise and vibration.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to the not enough of above-mentioned prior art, provide one kind can realize the self-lubricating and stand wear and tear to effective noise reduction's hydraulic tappet.
In order to achieve the above purpose, the utility model provides a following technical scheme: a self-lubricating noise-reducing wear-resistant hydraulic tappet comprises a cylinder body and a plunger capable of reciprocating inside the cylinder body, wherein one end of the plunger is linked with an air rod, the other end of the plunger, which is opposite to one end of the linked air rod, is linked with a cam, the hydraulic tappet is characterized in that the plunger and the cylinder body are respectively provided with an oil inlet hole capable of being communicated with each other, an oil pressure cavity communicated with the oil inlet hole is arranged in the plunger, a cushion seat which is linked with the air rod and can be communicated with the oil pressure cavity is arranged between the plunger and the air rod, the periphery of the cushion seat, which is in axial contact with the plunger, is in a cambered surface, the periphery of the upper end of the cushion seat is provided with a barb, the plunger is provided with a hook groove capable of being embedded with the barb on the cushion seat, the middle of the cushion seat is axially provided with a cylindrical guide groove linked with the air rod, the pressure chamber is internally provided with a one-way valve component which is linked with one end of a plunger, the plunger is positioned below the oil inlet hole and is provided with a plurality of heat dissipation oil holes with even intervals along the axial direction, a heat dissipation oil groove which surrounds the surface of the plunger is arranged between the heat dissipation oil holes, and the lower end of the cylinder is provided with a wear-resistant guide device which is in rolling contact with the cam.
Adopt above-mentioned technical scheme, engine oil gets into the oil pressure intracavity through the inlet port on cylinder and the plunger, further enters into the pressure chamber of plunger bottom, and it is upwards to promote the plunger, and the purpose of base of a chair this moment is exactly in order to support the gas pole jack-up that makes progress under the promotion of plunger, and the cylindricality guide way on the base of a chair then plays the guide effect, can avoid gas pole center skew excessive, leads to the clearance change too big, the hypotenuse purpose that the guide way edge set up is for the entering of convenient gas pole, through the heat dissipation oilhole that sets up in the plunger periphery, can guide the oil temperature in the plunger to the plunger outside, can accelerate the heat dissipation, still can play the effect of self-lubricating simultaneously.
The self-lubricating noise-reducing wear-resistant hydraulic tappet can be further arranged as follows: the wear-resistant guide device comprises a wear-resistant guide block, a step is arranged at one end, close to the cam, of the cylinder, the periphery of the step of the cylinder is buckled with the wear-resistant guide block in a ring mode, and a guide groove in rolling contact with the cam is formed in the center of the outer surface of the wear-resistant guide block.
Adopt above-mentioned technical scheme, wear-resisting guide block replaces cylinder and cam contact, has prolonged the life of cylinder, for subsequent maintenance provide convenient, directly change wear-resisting guide block can, and the purpose of guide way is in order to prevent the cam deflection, further avoids leading to the too big condition of valve clearance change because the cam takes place to deflect.
The self-lubricating noise-reducing wear-resistant hydraulic tappet can be further arranged as follows: the outer surface of the wear-resistant guide block contacting the cam is coated with high-temperature wear-resistant paint.
By adopting the technical scheme, the wear-resistant guide block can generate larger friction and heat with the cam in a working state, so that the service performance of the wear-resistant guide block is enhanced by coating a layer of high-temperature wear-resistant coating on the surface, and the service life of the whole hydraulic tappet is prolonged.
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Drawings
Fig. 1 is a perspective view of the present invention;
fig. 2 is a schematic diagram of the plunger of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 to 2, the hydraulic tappet comprises a cylinder and a plunger 2 capable of reciprocating inside the cylinder 1, wherein one end of the plunger 2 is linked with an air rod 3, the other end of the plunger 2, which is opposite to one end of the linked air rod 3, is linked with a cam 4, the plunger 2 and the cylinder 1 are respectively provided with an oil inlet 21 capable of being communicated with each other, an oil pressure cavity 22 communicated with the oil inlet 21 is arranged in the plunger 2, a pad 4 which is linked with the air rod 3 and is capable of being communicated with the oil pressure cavity 22 is arranged between the plunger 2 and the air rod 3, the outer periphery of the pad 4 and the plunger 2, which are in axial contact, is a cambered surface, the outer periphery of the upper end of the pad 4 is provided with a barb 41, the plunger 2 is provided with a hook groove capable of being embedded with the barb 41 on the pad 4, the middle of the pad 4 is provided with a cylindrical guide groove 42 which is linked with the air rod along the axial direction, one end that is close to the cam on the plunger 2 is equipped with pressure chamber 23 with the cooperation of cylinder 1, be equipped with the check valve subassembly 24 with the linkage of 2 one ends of plunger in the pressure chamber 23, plunger 2 is located inlet port 21 below and is equipped with the even heat dissipation oilhole 25 in a plurality of interval along the axial, be equipped with along the surperficial radiating oil groove 26 that encircles of plunger between the heat dissipation oilhole 25, 1 lower extreme of cylinder is equipped with the wear-resisting guider with cam rolling contact, wear-resisting guider includes wear-resisting guide block 5, the one end that cylinder 1 is close to the cam is equipped with the step, 5 ring locks of wear-resisting guide block are in the periphery of cylinder step, 5 outer surface center departments of wear-resisting guide block are equipped with guide way 51 with cam rolling contact, the outer surface coating of 5 contact cams of wear-resisting guide.
Claims (3)
1. The utility model provides a stand wear and tear hydraulic tappet that makes an uproar falls in self-lubricating, includes cylinder and can be at the inside reciprocating motion's of cylinder plunger, plunger one end and gas lever linkage, its characterized in that: the plunger and the column body are respectively provided with an oil inlet hole which can be communicated with each other, an oil pressure cavity communicated with the oil inlet hole is arranged in the plunger, a pad seat which is linked with the air rod and can be communicated with the oil pressure cavity is arranged between the plunger piston and the air rod, the peripheral surface of the pad seat, which is contacted with the plunger piston along the axial direction, is a cambered surface, the periphery of the upper end of the pad seat is provided with a barb, the plunger is provided with a hook groove which can be embedded with the barb on the pad seat, the middle part of the cushion seat is axially provided with a cylindrical guide groove which is linked with the air rod, the edge of the cylindrical guide groove is provided with a bevel edge, one end of the plunger close to the cam is matched with the cylinder body to be provided with a pressure chamber, a one-way valve component linked with one end of the plunger is arranged in the pressure chamber, the plunger is located and is equipped with the even heat dissipation oilhole of a plurality of interval along the axial below the inlet port, be equipped with the heat dissipation oil groove that encircles along the plunger surface between the heat dissipation oilhole, the cylinder lower extreme is equipped with the wear-resisting guider with cam rolling contact.
2. The self-lubricating, noise-reducing and wear-resistant hydraulic tappet of claim 1, wherein: the wear-resistant guide device comprises a wear-resistant guide block, a step is arranged at one end, close to the cam, of the cylinder, the periphery of the step of the cylinder is buckled with the wear-resistant guide block in a ring mode, and a guide groove in rolling contact with the cam is formed in the center of the outer surface of the wear-resistant guide block.
3. The self-lubricating, noise-reducing and wear-resistant hydraulic tappet of claim 2, wherein: the outer surface of the wear-resistant guide block, which is in contact with the cam, is coated with high-temperature wear-resistant paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922244341.4U CN211287824U (en) | 2019-12-13 | 2019-12-13 | Self-lubricating noise-reducing wear-resistant hydraulic tappet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922244341.4U CN211287824U (en) | 2019-12-13 | 2019-12-13 | Self-lubricating noise-reducing wear-resistant hydraulic tappet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211287824U true CN211287824U (en) | 2020-08-18 |
Family
ID=72038232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922244341.4U Expired - Fee Related CN211287824U (en) | 2019-12-13 | 2019-12-13 | Self-lubricating noise-reducing wear-resistant hydraulic tappet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211287824U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112873800A (en) * | 2020-12-25 | 2021-06-01 | 重庆瑞霆塑胶有限公司 | Film extrusion casting equipment |
-
2019
- 2019-12-13 CN CN201922244341.4U patent/CN211287824U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112873800A (en) * | 2020-12-25 | 2021-06-01 | 重庆瑞霆塑胶有限公司 | Film extrusion casting equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200818 Termination date: 20201213 |