CN210290622U - High-coaxiality automatic hydraulic tensioner - Google Patents
High-coaxiality automatic hydraulic tensioner Download PDFInfo
- Publication number
- CN210290622U CN210290622U CN201921076127.6U CN201921076127U CN210290622U CN 210290622 U CN210290622 U CN 210290622U CN 201921076127 U CN201921076127 U CN 201921076127U CN 210290622 U CN210290622 U CN 210290622U
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- sleeve
- cavity
- push rod
- oil
- spring
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Abstract
The utility model discloses an automatic hydraulic pressure of high axiality rises and tightly rises ware, including the organism, its characterized in that: a cavity is arranged in the machine body, a sleeve and a push rod are arranged in the cavity, the sleeve is fixed at the bottom of the cavity, hydraulic oil is arranged in the sleeve, a high-pressure oil seepage hole is formed in the wall of the sleeve, an oil storage cavity is formed between the sleeve and the inner wall of the cavity, a base is arranged at the bottom of the sleeve, and a one-way oil inlet structure communicated with the sleeve and the oil storage cavity is arranged on the base; the lower end of the push rod can be axially movably arranged in the sleeve, the upper end of the push rod is connected with a first lug ring, a telescopic rubber outer sleeve is connected between the upper end of the push rod and the upper end of the machine body, a guide pad and a framework oil seal are arranged in a step opening of the cavity, and the push rod penetrates through the guide pad and the framework oil seal in a sliding manner; the push rod is sleeved with a spring, the lower end of the spring is connected with the bottom of the cavity, the upper end of the spring is connected with a spring seat, the spring seat is fixed on the push rod, and a steel wire retainer ring for the shaft is arranged between the spring seat and the guide pad. The utility model discloses the axiality is high, tight stable performance rises.
Description
Technical Field
The utility model relates to an improvement invention of an automobile tensioner, in particular to an improvement invention of a high-coaxiality automatic hydraulic tensioner.
Background
The tensioner is a commonly used holding device on a belt and chain transmission system, and is characterized in that the belt and the chain can be kept to have proper tension in the transmission process, so that the belt is prevented from slipping, or the synchronous belt is prevented from being dragged out due to tooth jumping and tooth dropping, or the chain is prevented from loosening and dropping, and the abrasion of a chain wheel and the chain is reduced. The structure of the tensioner is various, the tensioner generally comprises a fixed structure and an automatic elastic adjusting structure, wherein the fixed structure mostly adopts a fixed adjustable chain wheel to adjust the tension of a belt and a chain wheel, the automatic elastic adjusting structure mostly adopts an elastic component which can automatically rebound to control the tension of the belt and a chain, and the domestic automatic adjustable belt tensioner mostly adopts a hydraulic spring structure. The push rod of the existing hydraulic tensioner has poor coaxiality in the moving process, so that the tension is unstable.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that overcome prior art not enough, provide a reasonable, the tight stable high axiality automatic hydraulic pressure that rises of tight stable performance that rises of result rises.
In order to solve the technical problem, the utility model discloses an adopt following technical scheme to realize: the high-coaxiality automatic hydraulic tensioner comprises an organism and is characterized in that: a cavity is arranged in the machine body, a step opening is formed in the upper end of the cavity, a sleeve and a push rod are arranged in the cavity, the sleeve is fixed at the bottom of the cavity, hydraulic oil is arranged in the sleeve, a high-pressure oil seepage hole is formed in the wall of the sleeve, an oil storage cavity is formed between the sleeve and the inner wall of the cavity, a base is arranged at the bottom of the sleeve, and a one-way oil inlet structure communicated with the sleeve and the oil storage; the lower end of the push rod can be axially movably arranged in the sleeve, the upper end of the push rod is connected with a first lug ring, a telescopic rubber outer sleeve is connected between the upper end of the push rod and the upper end of the machine body, a guide pad and a framework oil seal are arranged in a step opening of the cavity, the framework oil seal is arranged on the outer side of the guide pad, and the push rod penetrates through the guide pad and the framework oil seal in a sliding manner; the push rod is sleeved with a spring, the lower end of the spring is connected with the bottom of the cavity, the upper end of the spring is connected with a spring seat, the spring seat is fixed on the push rod, and a steel wire retaining ring for the shaft is arranged between the spring seat and the guide pad; the lower end of the machine body is also provided with a second earring.
The one-way oil inlet structure comprises an oil inlet hole formed in the base, a steel ball arranged on the inner side of the oil inlet hole, a ball clamping shell arranged above the steel ball and an elastic piece arranged between the steel ball and the ball clamping shell, the ball clamping shell is fixed on the base, and the steel ball is in sealing fit with the oil inlet hole.
And plastic sleeves are arranged in the shaft holes of the first earrings and the second earrings, and shaft sleeves are arranged in the plastic sleeves.
The beneficial effects of the utility model are that the automatic hydraulic pressure of high axiality after the improvement rises the ware, the push rod lower extreme is led by the sleeve, and push rod upper portion is led by the guide pad, and the spring housing is established on the push rod for the push rod is more stable at the cavity internal axial displacement of organism, and the axiality is high.
Drawings
The following describes the present invention in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a structural sectional view of the present invention.
Detailed Description
The drawings show the structure of the present invention, and the details thereof will be further described with reference to the drawings. The high-coaxiality automatic hydraulic tensioner comprises a tensioner body 1, wherein a cavity 2 is arranged in the tensioner body 1, a step opening 3 is formed in the upper end of the cavity 2, a sleeve 4 and a push rod 5 are arranged in the cavity 2, the sleeve 4 is fixed at the bottom of the cavity 2, hydraulic oil 6 is arranged in the sleeve 4, a high-pressure oil penetration hole is formed in the wall of the sleeve 4, an oil storage cavity 7 is formed between the sleeve 4 and the inner wall of the cavity 2, a base 8 is arranged at the bottom of the sleeve 4, and a one-way oil inlet structure for communicating the sleeve 4 with the oil; the lower end of the push rod 5 can be axially movably arranged in the sleeve 4, the upper end of the push rod 5 is connected with a first earring 9, a telescopic rubber outer sleeve 10 is connected between the upper end of the push rod 5 and the upper end of the machine body 1, a guide pad 11 and a framework oil seal 12 are arranged in the step opening 3 of the cavity 2, the framework oil seal 12 is arranged outside the guide pad 11, and the push rod 5 penetrates through the guide pad 11 and the framework oil seal 12 in a sliding manner; a spring 13 is sleeved on the push rod 5, the lower end of the spring 13 is connected with the bottom of the cavity 2, the upper end of the spring 13 is connected with a spring seat 14, the spring seat 14 is fixed on the push rod 5, and a steel wire retainer ring 15 for a shaft is arranged between the spring seat 14 and the guide pad 11; the lower end of the machine body 1 is also provided with a second ear ring 16.
The one-way oil inlet structure comprises an oil inlet hole 17 formed in the base 8, a steel ball 18 arranged on the inner side of the oil inlet hole 17, a clamping ball shell 19 arranged above the steel ball 18 and an elastic part 20 arranged between the steel ball 18 and the clamping ball shell 19, wherein the elastic part is a pressure spring, the clamping ball shell 19 is fixed on the base 8, the steel ball 18 is in sealing fit with the oil inlet hole 17, when hydraulic oil 6 enters the sleeve 4 from the oil storage cavity 7, the steel ball 18 is driven to overcome the elastic part 20 to move upwards, the sealing of the oil inlet hole 17 is removed, otherwise, the steel ball 18 seals the oil inlet hole 17 under the action of the elastic part 20, and one-way oil inlet is realized.
The shaft holes of the first earring 9 and the second earring 16 are internally provided with plastic sleeves 21, the plastic sleeves 21 are internally provided with shaft sleeves 22, and the plastic sleeves 21 are clamped in the shaft holes.
The utility model discloses a theory of operation, 5 inside removal extrusion hydraulic oil 6 of push rod, the shrink of spring 13, hydraulic oil 6 is outwards flowed into oil storage chamber 7 by the high pressure oil leakage hole on the 4 walls of sleeve, hydraulic tensioning device is in compression state this moment, when the belt is lax, the extension of spring 13, push rod 5 moves outward, hydraulic oil 6 gets into in the sleeve 4 along one-way oil feed structure, at 5 axial displacement's of push rod in-process, 5 lower extremes of push rod are led by sleeve 4, 5 upper portions of push rod are led by direction pad 11, and the cover of spring 13 is established on push rod 5, make push rod 5 axial displacement more stable in 2 of the cavity of organism 1, the axiality is high.
In summary, the above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. Automatic hydraulic pressure of high axiality rises and tightly rises ware, including the organism, its characterized in that: a cavity is arranged in the machine body, a step opening is formed in the upper end of the cavity, a sleeve and a push rod are arranged in the cavity, the sleeve is fixed at the bottom of the cavity, hydraulic oil is arranged in the sleeve, a high-pressure oil seepage hole is formed in the wall of the sleeve, an oil storage cavity is formed between the sleeve and the inner wall of the cavity, a base is arranged at the bottom of the sleeve, and a one-way oil inlet structure communicated with the sleeve and the oil storage; the lower end of the push rod can be axially movably arranged in the sleeve, the upper end of the push rod is connected with a first lug ring, a telescopic rubber outer sleeve is connected between the upper end of the push rod and the upper end of the machine body, a guide pad and a framework oil seal are arranged in a step opening of the cavity, the framework oil seal is arranged on the outer side of the guide pad, and the push rod penetrates through the guide pad and the framework oil seal in a sliding manner; the push rod is sleeved with a spring, the lower end of the spring is connected with the bottom of the cavity, the upper end of the spring is connected with a spring seat, the spring seat is fixed on the push rod, and a steel wire retaining ring for the shaft is arranged between the spring seat and the guide pad; the lower end of the machine body is also provided with a second earring.
2. The high-coaxiality automatic hydraulic tensioner as claimed in claim 1, wherein: the one-way oil inlet structure comprises an oil inlet hole formed in the base, a steel ball arranged on the inner side of the oil inlet hole, a ball clamping shell arranged above the steel ball and an elastic piece arranged between the steel ball and the ball clamping shell, the ball clamping shell is fixed on the base, and the steel ball is in sealing fit with the oil inlet hole.
3. The high-coaxiality automatic hydraulic tensioner as claimed in claim 1, wherein: and plastic sleeves are arranged in the shaft holes of the first earrings and the second earrings, and shaft sleeves are arranged in the plastic sleeves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921076127.6U CN210290622U (en) | 2019-07-11 | 2019-07-11 | High-coaxiality automatic hydraulic tensioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921076127.6U CN210290622U (en) | 2019-07-11 | 2019-07-11 | High-coaxiality automatic hydraulic tensioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210290622U true CN210290622U (en) | 2020-04-10 |
Family
ID=70101510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921076127.6U Expired - Fee Related CN210290622U (en) | 2019-07-11 | 2019-07-11 | High-coaxiality automatic hydraulic tensioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210290622U (en) |
-
2019
- 2019-07-11 CN CN201921076127.6U patent/CN210290622U/en not_active Expired - Fee Related
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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: 20200410 Termination date: 20210711 |