CN212803799U - High back pressure hydraulic steering gear with Y-shaped rotary dynamic sealing structure - Google Patents
High back pressure hydraulic steering gear with Y-shaped rotary dynamic sealing structure Download PDFInfo
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- CN212803799U CN212803799U CN202021401392.XU CN202021401392U CN212803799U CN 212803799 U CN212803799 U CN 212803799U CN 202021401392 U CN202021401392 U CN 202021401392U CN 212803799 U CN212803799 U CN 212803799U
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Abstract
The utility model discloses a high back pressure hydraulic steering gear of Y type rotary dynamic seal structure, which comprises a cavity, the outside surface of the cavity is provided with a bolt group, the bolt group is connected with the cavity through screw thread, one side of the cavity inside close to the bolt group is provided with a rotating device, the other side of the cavity inside far away from the bolt group is provided with a mechanical feedback device, the outer wall of one side of the cavity inside the mechanical feedback device is provided with a front cover, the front cover is fixedly connected with the cavity, the cavity inside is provided with a valve sleeve and a valve core between the rotating device and the mechanical feedback device, the valve sleeve is fixedly connected with the cavity, and the valve core is movably connected with the valve sleeve; by adopting the scheme of the utility model, the steering gear of the utility model adopts the Y-shaped rotary dynamic sealing element as shown in figure 4, has excellent pressure resistance, and has a service life of more than 15 ten thousand times when bearing continuous back pressure of 3 MPa; the Y-shaped rotary dynamic sealing element adopts a split structure combining the cavity and the front cover, so that the process flow is more convenient and the same technical effect is achieved.
Description
Technical Field
The utility model belongs to the technical field of hydraulic pressure, more specifically says, the utility model relates to a rotatory high back pressure hydraulic steering ware who moves seal structure of Y type.
Background
The hydraulic steering system is composed of an existing hydraulic steering gear, a hydraulic pump steering hydraulic cylinder, a connecting pipeline and the like, the common hydraulic steering gear is provided with an oil inlet P, an oil return port T, a left oil port L, four oil ports of a right oil port R, the oil inlet P is connected with the hydraulic pump outlet, the left oil port L, the right oil port R is respectively connected with a left cavity and a right cavity of the steering hydraulic cylinder, the oil return port T is connected with an oil return box, the maximum continuous backpressure of the oil return port T can only reach 2.5MPa due to the limitation of an X-shaped dynamic sealing structure, the service life can only reach about 5 ten thousand times, the performance requirement of using more than 10 ten thousand times can not be met, and therefore the hydraulic element with lower working pressure can not be connected between.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a rotatory seal structure's of Y type high back pressure hydraulic steering ware is moved to high back pressure and long service life is provided.
In order to realize the purpose, the utility model discloses the technical scheme who takes does: the utility model provides a rotatory high back pressure hydraulic steering ware who moves seal structure of Y type, includes the cavity, an outside surface of cavity is equipped with bolt group, threaded connection between bolt group and the cavity, the inside one side that is close to bolt group of cavity is equipped with rotating device, the inside opposite side of keeping away from bolt group of cavity is equipped with mechanical feedback device, the cavity is located one side outer wall of mechanical feedback device and is equipped with the protecgulum, fixed connection between protecgulum and the cavity, cavity inside is located and is equipped with valve barrel and case between rotating device and the mechanical feedback device, fixed connection between valve barrel and the cavity, swing joint between case and the valve barrel.
The utility model discloses a rotatory high back pressure hydraulic steering ware who moves seal structure of Y type, mechanical feedback device includes spring leaf group, group round pin and transmission shaft, and the transmission shaft sets up in the valve core, and with between the valve core swing joint, group round pin both ends respectively with fixed connection, spring leaf group and transmission shaft one end fixed connection between the valve barrel.
The utility model discloses a rotatory high back pressure hydraulic steering ware who moves seal structure of Y type, rotating device including connecting rotor and stator, the stator with fixed connection between the cavity, the rotor with transmission shaft fixed connection, swing joint between rotor and the stator.
The utility model discloses a rotatory high back pressure hydraulic steering gear who moves seal structure of Y type, cavity top surface is equipped with oil inlet P, oil return opening T, left hydraulic fluid port L and right hydraulic fluid port R, oil inlet P and hydraulic pump outlet connection, and left hydraulic fluid port L and right hydraulic fluid port R connect respectively and turn to left chamber of hydro-cylinder and right chamber, and oil return opening T connects the oil return tank.
The utility model discloses a rotatory high back pressure hydraulic steering gear who moves seal structure of Y type, be equipped with the rotatory sealing member that moves of Y type on the protecgulum, threaded connection between the rotatory sealing member that moves of Y type and the protecgulum.
The utility model discloses a rotatory high back pressure hydraulic steering ware who moves seal structure of Y type, bolt assembly includes three bolt of placing side by side, threaded connection between bolt and the cavity.
By adopting the scheme of the utility model, the steering gear of the utility model adopts the Y-shaped rotary dynamic sealing element as shown in figure 4, has excellent pressure resistance, and has a service life of more than 15 ten thousand times when bearing continuous back pressure of 3 MPa; the particularity of the seal groove structure of the Y-shaped rotary dynamic seal element is that the processing difficulty is high on the original integral shell, the existing process level can not be realized basically, so that a split structure of a cavity and a front cover is adopted, the Y-shaped rotary dynamic seal element is arranged on the Y-shaped rotary dynamic seal groove on the front cover, the structure is simpler, the process flow is more convenient, and the same technical effect is achieved.
The present invention will be described in more detail with reference to the accompanying drawings and examples.
Drawings
The contents of the description and the references in the drawings are briefly described as follows:
fig. 1 is a cross-sectional view of the present invention;
fig. 2 is a top view of the present invention;
FIG. 3 is a cross-sectional view of the front cover of the present invention;
FIG. 4 is a cross-sectional view of the Y-shaped rotary dynamic seal of the present invention;
fig. 5 is a cross-sectional view of the X-shaped rotary dynamic seal member of the present invention;
labeled as: 1. a housing; 2. a valve core; 3. a valve housing; 4. a spring plate group; 5. pulling a pin; 6. a drive shaft; 7. a rotor; 8. a stator; 9. a front cover; 91. a Y-shaped rotary dynamic seal groove; 10. a Y-shaped rotary dynamic seal member;
Detailed Description
The following description of the embodiments of the present invention, with reference to the accompanying drawings, will be made in further detail to explain, for example, the shapes and structures of the components, the mutual positions and connection relationships among the components, the functions and working principles of the components, the manufacturing process, and the operation and use method of the components, so as to help those skilled in the art to understand the concept and technical solutions of the present invention more completely, accurately and deeply.
Fig. 1 is a cross-sectional view of the present invention; fig. 2 is a top view of the present invention; FIG. 3 is a cross-sectional view of the front cover of the present invention; FIG. 4 is a cross-sectional view of the Y-shaped rotary dynamic seal of the present invention; fig. 5 is a cross-sectional view of the X-shaped rotary dynamic seal member of the present invention; as shown in fig. 1, the high back pressure hydraulic steering gear with the Y-shaped rotary dynamic seal structure comprises a cavity, wherein a bolt group is arranged on the surface of one outer side of the cavity 1, the bolt group is in threaded connection with the cavity 1, a rotating device is arranged on one side, close to the bolt group, inside the cavity 1, a mechanical feedback device is arranged on the other side, far away from the bolt group, inside the cavity 1, a front cover 9 is arranged on the outer wall of one side, located on the mechanical feedback device, of the cavity 1, the front cover 9 is fixedly connected with the cavity 1, a valve sleeve 3 and a valve core 2 are arranged inside the cavity 1, located between the rotating device and the mechanical feedback device, the valve sleeve 3 is fixedly connected with the cavity 1, and the valve core 2; the mechanical feedback device comprises a spring leaf set 4, a shifting pin 5 and a transmission shaft 6, wherein the transmission shaft 6 is arranged in the valve core 2 and is movably connected with the valve core 2, two ends of the shifting pin 5 are fixedly connected with the valve sleeve 3 respectively, and the spring leaf set 4 is fixedly connected with one end of the transmission shaft 6; the rotating device comprises a rotor 7 and a stator 8 which are connected, the stator 7 is fixedly connected with the cavity 1, the rotor 7 is fixedly connected with the transmission shaft 6, the rotor 7 is movably connected with the stator 8, the bolt group comprises three bolts which are arranged side by side, and the bolts are connected with the cavity in a threaded manner.
As fig. 2 the utility model discloses a 1 top surface of cavity that top view is shown is equipped with oil inlet P, oil return opening T, left hydraulic fluid port L and right hydraulic fluid port R, oil inlet P and hydraulic pump outlet connection, and left hydraulic fluid port L and right hydraulic fluid port R connect respectively to turn to left chamber of hydro-cylinder and right chamber, and oil return case is connected to oil return opening T.
As shown in the cross-sectional view of the front cover of fig. 3, the front cover 9 is provided with a Y-shaped rotary dynamic seal 91, and the Y-shaped rotary dynamic seal 91 is screwed to the front cover 9.
In use, when the steering wheel is turned right (or left): the valve core 2 is driven to rotate right (or left), because the maximum rotation amount of about 10.5 degrees is formed between the valve core 2 and the valve sleeve 3, the valve core 2 rotates relative to the valve sleeve 3, at the moment, an oil groove of the valve core 2 is communicated with an oil inlet path of the valve sleeve 3, oil enters a high-pressure cavity of a rotating stator pair consisting of a rotor 7 and a stator 8 through an oil inlet groove on the valve body 2 and a radial hole on the valve body, the rotor 7 is pushed to rotate relative to the stator 8 by overcoming relevant friction resistance, meanwhile, the oil discharged from a low-pressure cavity and a transition cavity enters an oil hole on the valve sleeve 3 through a radial hole on the valve body, reaches a steering oil groove on the valve core 2, then enters a cavity of a steering oil cylinder through an oil port L (or R), a piston rod of the oil cylinder is pushed to extend outwards (contract) to rotate the right (or left), the oil in the other cavity of the oil cylinder enters an oil hole of the valve sleeve 3 through the oil, and hydraulic steering is realized.
By adopting the scheme of the utility model, the steering gear of the utility model adopts the Y-shaped rotary dynamic sealing element as shown in figure 4, has excellent pressure resistance, and has a service life of more than 15 ten thousand times when bearing continuous back pressure of 3 MPa; the particularity of the seal groove structure of the Y-shaped rotary dynamic seal element is that the processing difficulty is high on the original integral shell, the existing process level can not be realized basically, so that a split structure of a cavity and a front cover is adopted, the Y-shaped rotary dynamic seal element is arranged on the Y-shaped rotary dynamic seal groove on the front cover, the structure is simpler, the process flow is more convenient, and the same technical effect is achieved.
The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above-mentioned manner, and various insubstantial improvements can be made without modification to the method and technical solution of the present invention, or the present invention can be directly applied to other occasions without modification, all within the scope of the present invention.
Claims (6)
1. The utility model provides a rotatory high back pressure hydraulic pressure steering gear who moves seal structure of Y type, includes the cavity, its characterized in that: the hydraulic valve is characterized in that a bolt group is arranged on the surface of one outer side of the cavity, the bolt group is in threaded connection with the cavity, a rotating device is arranged on one side, close to the bolt group, inside the cavity, a mechanical feedback device is arranged on the other side, far away from the bolt group, inside the cavity, a front cover is arranged on the outer wall of one side, located on the mechanical feedback device, of the cavity, the front cover is fixedly connected with the cavity, a valve sleeve and a valve core are arranged inside the cavity, located between the rotating device and the mechanical feedback device, the valve sleeve is fixedly connected with the cavity, and the.
2. The high back pressure hydraulic steering gear with the Y-shaped rotary dynamic sealing structure as claimed in claim 1, wherein the mechanical feedback device comprises a spring plate set, a shifting pin and a transmission shaft, the transmission shaft is arranged in the valve core and movably connected with the valve core, two ends of the shifting pin are respectively and fixedly connected with the valve sleeve, and the spring plate set is fixedly connected with one end of the transmission shaft.
3. The high back pressure hydraulic steering gear with the Y-shaped rotary dynamic sealing structure as claimed in claim 2, wherein the rotating device comprises a connecting rotor and a stator, the stator is fixedly connected with the cavity, the rotor is fixedly connected with the transmission shaft, and the rotor is movably connected with the stator.
4. The high back pressure hydraulic steering gear with the Y-shaped rotary dynamic sealing structure according to claim 1, characterized in that the top surface of the cavity is provided with an oil inlet P, an oil return port T, a left oil port L and a right oil port R, the oil inlet P is connected with the hydraulic pump outlet, the left oil port L and the right oil port R are respectively connected with the left cavity and the right cavity of the steering cylinder, and the oil return port T is connected with the oil return tank.
5. The high back pressure hydraulic steering gear with the Y-shaped rotary dynamic sealing structure according to claim 1, wherein the Y-shaped rotary dynamic sealing element is arranged on the front cover, and the Y-shaped rotary dynamic sealing element is in threaded connection with the front cover.
6. The high back pressure hydraulic steering gear with a Y-shaped rotary dynamic seal structure according to claim 1, wherein the bolt set comprises three bolts arranged side by side, and the bolts are in threaded connection with the cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021401392.XU CN212803799U (en) | 2020-07-16 | 2020-07-16 | High back pressure hydraulic steering gear with Y-shaped rotary dynamic sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021401392.XU CN212803799U (en) | 2020-07-16 | 2020-07-16 | High back pressure hydraulic steering gear with Y-shaped rotary dynamic sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212803799U true CN212803799U (en) | 2021-03-26 |
Family
ID=75102763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021401392.XU Active CN212803799U (en) | 2020-07-16 | 2020-07-16 | High back pressure hydraulic steering gear with Y-shaped rotary dynamic sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212803799U (en) |
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2020
- 2020-07-16 CN CN202021401392.XU patent/CN212803799U/en active Active
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