CN215980399U - Hydraulic expansion pressure locking rotating shaft structure and transmission system - Google Patents
Hydraulic expansion pressure locking rotating shaft structure and transmission system Download PDFInfo
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- CN215980399U CN215980399U CN202122547684.5U CN202122547684U CN215980399U CN 215980399 U CN215980399 U CN 215980399U CN 202122547684 U CN202122547684 U CN 202122547684U CN 215980399 U CN215980399 U CN 215980399U
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Abstract
The application discloses hydraulic pressure locking rotation axis structure and transmission system that rises includes: the friction sleeve, the tensioning sleeve and the positioning mandrel are arranged on the outer side of the positioning mandrel; the tensioning sleeve is sleeved on the positioning mandrel, two ends of the tensioning sleeve are hermetically fixed with two ends of the positioning mandrel, and an oil cavity is arranged between the tensioning sleeve and the outer circle of the positioning mandrel; an oil inlet channel and an oil outlet channel which are communicated with the oil cavity are formed in the positioning mandrel; the friction sleeve is sleeved on the tensioning sleeve, and the end part of the friction sleeve is used for being in transmission connection with the main shaft system; the friction sleeve and the tensioning sleeve have variable gaps, so that the tensioning sleeve can be driven by hydraulic pressure to expand outwards to be in contact with the inner wall of the friction sleeve and generate static friction force. This application has realized keeping to the phase place after the rotation axis circumference location to because friction cover, rise tight cover and positioning core axle adopt the mode of establishing of overlapping each other, make locking structure's compact structure nature effectively improved, and then solved the rotation axis locking structure among the correlation technique comparatively complicated, the compact problem inadequately of structure.
Description
Technical Field
The application relates to the technical field of shaft positioning, in particular to a hydraulic expansion pressure locking rotating shaft structure and a transmission system.
Background
In the process of the rotation motion of the main shaft system, the rotating shaft needs to be circumferentially positioned and phase-kept. The structure for realizing phase retention after circumferential positioning of the rotating shaft is a locking structure of the rotating shaft, the locking structure in the related technology is generally realized by sleeving a brake pad on the rotating shaft, but the locking structure of the rotating shaft is complex and the structure is not compact enough.
Aiming at the problems that the locking structure of the rotating shaft in the related technology is complex and the structure is not compact enough, an effective solution is not provided at present.
SUMMERY OF THE UTILITY MODEL
The main aim at of this application provides a hydraulic pressure locking rotation axis structure and transmission system that rises to the rotation axis locking structure who solves among the correlation technique is comparatively complicated, the not compact problem enough of structure.
In order to achieve the above object, the present application provides a hydraulically expanding pressure locking rotating shaft structure, including: the friction sleeve, the tensioning sleeve and the positioning mandrel are arranged on the outer side of the positioning mandrel; wherein the content of the first and second substances,
the tensioning sleeve is sleeved on the positioning mandrel, two ends of the tensioning sleeve are hermetically fixed with two ends of the positioning mandrel, and an oil cavity is arranged between the tensioning sleeve and the excircle of the positioning mandrel;
an oil inlet channel and an oil outlet channel which are communicated with the oil cavity are formed in the positioning mandrel;
the friction sleeve is sleeved on the tensioning sleeve, and the end part of the friction sleeve is in transmission connection with a main shaft system; the friction sleeve and the tensioning sleeve have variable gaps, so that the tensioning sleeve can be driven by hydraulic pressure to expand outwards to be in contact with the inner wall of the friction sleeve, and static friction force is generated.
Furthermore, an annular groove is formed in the inner side of the tensioning sleeve, and when the tensioning sleeve is sleeved on the positioning mandrel, the oil cavity is formed between the inner wall of the annular groove and the outer wall of the positioning mandrel.
Further, the oil inlet channel and the oil outlet channel are respectively arranged at the upper end and the lower end of the positioning mandrel;
the oil inlet channel comprises an oil inlet hole and a first oil through hole, the oil inlet hole is transversely formed, the first oil through hole is formed along the radial direction of the positioning mandrel, and two ends of the first oil through hole are respectively communicated with the oil inlet hole and the oil cavity;
the oil outlet channel comprises an oil outlet hole and a second oil through hole, the oil outlet hole is formed in the transverse direction, the second oil through hole is formed in the radial direction of the positioning mandrel, and two ends of the second oil through hole are communicated with the oil outlet hole and the oil cavity respectively.
Furthermore, a first sealing groove is formed in the end part of the outer circle of the positioning mandrel, and a first sealing ring is embedded in the first sealing groove;
a second sealing groove is formed in one end, far away from the first sealing groove, of the inner side of the tensioning sleeve, and a second sealing ring is embedded in the second sealing groove;
the first sealing ring and the second sealing ring are respectively positioned on two sides of the oil cavity.
Further, the first sealing groove and the second sealing groove are both provided with two.
Furthermore, a boss is arranged at one end of the positioning mandrel, which is far away from the friction sleeve;
the first end of the tensioning sleeve extends to the end face of the boss, and the second end of the tensioning sleeve is in contact with the other end of the positioning mandrel and is fixedly connected with the positioning mandrel through a bolt.
Furthermore, the positioning mandrel, the tensioning sleeve and the friction sleeve are coaxially arranged.
Furthermore, a friction plate is sleeved on the inner side of the friction sleeve, the tensioning sleeve is sleeved in the friction sleeve, and the outer wall of the oil cavity corresponds to the friction plate.
Furthermore, the friction plate and the friction sleeve are coaxially arranged, and the friction plate is embedded in the inner wall of the friction sleeve and bonded through connecting glue.
According to another aspect of the present application, a transmission system is provided, which includes the above-mentioned hydraulic expansion locking rotating shaft structure.
In the embodiment of the application, a friction sleeve, a tensioning sleeve and a positioning mandrel are arranged; the tensioning sleeve is sleeved on the positioning mandrel, two ends of the tensioning sleeve are hermetically fixed with two ends of the positioning mandrel, and an oil cavity is arranged between the tensioning sleeve and the outer circle of the positioning mandrel; an oil inlet channel and an oil outlet channel which are communicated with the oil cavity are formed in the positioning mandrel; the friction sleeve is sleeved on the tensioning sleeve, and the end part of the friction sleeve is used for being in transmission connection with the main shaft system; the friction sleeve and the tensioning sleeve have variable gaps, so that the tensioning sleeve can be driven by hydraulic pressure to expand outwards to be in contact with the inner wall of the friction sleeve and generate static friction force, the purpose that after hydraulic oil is injected into the oil cavity, the part, corresponding to the oil cavity, of the tensioning sleeve expands outwards to be in contact with the inner wall of the friction sleeve and generate static friction force to lock the friction sleeve and a main shaft system connected with the friction sleeve is achieved, phase keeping after circumferential positioning of the rotating shaft is achieved, and the friction sleeve, the tensioning sleeve and the positioning core shaft are sleeved mutually, so that the structural compactness of the locking structure is effectively improved, and the problems that the locking structure of the rotating shaft in the related technology is complex and the structure is not compact enough are solved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:
FIG. 1 is a schematic structural diagram according to an embodiment of the present application;
FIG. 2 is a schematic structural view of a positioning mandrel according to an embodiment of the present application;
FIG. 3 is a schematic structural diagram of a tensioning sleeve according to an embodiment of the present application;
FIG. 4 is a schematic structural diagram of a friction sleeve according to an embodiment of the present application;
the friction plate comprises a friction sleeve 1, a second seal groove 2, a tensioning sleeve 3, a first seal groove 4, a positioning mandrel 5, an oil outlet channel 6, a boss 7, an oil inlet channel 8, an annular groove 10, an oil cavity 11 and a friction plate 12.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used.
In this application, the terms "upper", "lower", "inside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "disposed," "provided," "connected," "secured," and the like are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In addition, the term "plurality" shall mean two as well as more than two.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1 to 4, an embodiment of the present application provides a hydraulic expansion locking rotating shaft structure, including: the friction sleeve 1, the tension sleeve 3 and the positioning mandrel 5; wherein the content of the first and second substances,
the tensioning sleeve 3 is sleeved on the positioning mandrel 5, two ends of the tensioning sleeve 3 are hermetically fixed with two ends of the positioning mandrel 5, and an oil cavity 11 is arranged between the tensioning sleeve 3 and the outer circle of the positioning mandrel 5;
an oil inlet channel 8 and an oil outlet channel 6 which are communicated with the oil cavity 11 are formed in the positioning mandrel 5;
the friction sleeve 1 is sleeved on the tensioning sleeve 3, and the end part of the friction sleeve 1 is in transmission connection with a main shaft system; the friction sleeve 1 and the tension sleeve 3 have a deformation gap, so that the tension sleeve 3 can be driven by hydraulic pressure to expand outwards to be in contact with the inner wall of the friction sleeve 1 and generate static friction force.
In this embodiment, the locking rotating shaft structure mainly comprises three parts, namely a friction sleeve 1, a tension sleeve 3 and a positioning mandrel 5, which are sequentially sleeved, that is, the tension sleeve 3 is sleeved on the positioning mandrel 5, the friction sleeve 1 is sleeved on the tension sleeve 3, the tension sleeve 3 and the positioning mandrel 5 are fixedly connected, and two ends of the tension sleeve 3 are fixedly connected with two ends of the positioning mandrel 5 in a sealing manner, so that an oil cavity 11 formed between the two parts has good sealing performance.
The tensioning sleeve 3 and the positioning mandrel 5 are used as a shaft system fixing part, and the shaft system fixing part is fixed on a fixing part (such as a rotating seat) of a main shaft system. The friction sleeve 1 is connected with a main shaft system to serve as a shaft system rotating part. The positioning precision of the shafting fixed part and the shafting rotating part on the main shaft shafting is ensured to be in the coaxiality
Within. Therefore, the coaxiality of the tensioning sleeve 3 and the friction sleeve 1 is ensured, and the contact uniformity of the tensioning sleeve 3 and the friction sleeve 1 during tensioning is met.
The friction sleeve 1 is sleeved on the tensioning sleeve 3, and a certain deformation clearance is formed between the friction sleeve 1 and the tensioning sleeve 3 in a normal state, so that the friction sleeve 1 can freely rotate on the tensioning sleeve 3. Because the positioning mandrel 5 is provided with the oil inlet channel 8 and the oil outlet channel 6 which are communicated with the oil cavity 11, when the positioning mandrel is connected with external hydraulic equipment, hydraulic oil can be pressurized and then injected into the oil cavity 11 through the oil inlet channel 8, so that the pressure in the oil cavity 11 is increased. The outer wall of the oil cavity 11 (namely the side wall of the tensioning sleeve 3) has certain deformation capacity, when the pressure of the oil cavity 11 rises, the outer wall of the oil cavity 11 also expands outwards, so that the excircle of the tensioning sleeve 3 is contacted with the inner wall of the friction sleeve 1, and the blocking torsion torque is provided by means of the mutual friction force (the blocking torsion torque is more than 1.5 times of the maximum rotation torque on the rotating part of the main shaft shafting, which meets the design requirement). When the friction sleeve 1 is in transmission connection with the main shaft system, the locked-rotor torque generated by the tension sleeve 3 can ensure that a rotating component of the main shaft system cannot generate circumferential angular displacement under the action of external torque, so that phase maintenance is realized.
When the hydraulic oil in the oil cavity 11 is discharged through the oil outlet channel 6 for pressure relief, the pressure of the oil cavity 11 is reduced, so that the tensioning sleeve 3 retracts and is not in contact with the friction sleeve 1, the shafting fixing part and the shafting rotating part are separated from each other, and the shafting fixing part is ensured not to influence the movement of the main shaft shafting rotating part.
The clearance between the excircle of the tensioning sleeve 3 and the inner hole of the friction sleeve 1 requires 1: the tight cover 3 excircle of rising can contact and can provide the locked rotor moment of torsion 2 of the designing requirement with 1 hole of friction sleeve during pressurization: when releasing pressure, the excircle of the tensioning sleeve 3 retracts and can be completely separated from the inner hole of the friction sleeve 1.
During hydraulic pressurization and hydraulic pressure relief, an oil cavity 11 formed between the tensioning sleeve 3 and the positioning mandrel 5 is reliable in sealing and free of leakage. Two ends of the oil cavity 11 adopt a redundant design of a double O-shaped ring sealing mode, so that the sealing reliability is improved. The O-shaped ring is installed by adopting the piston and the piston rod respectively, so that the O-shaped ring is convenient to assemble and the damage to the O-shaped ring during assembly can be reduced.
As shown in fig. 1 to 4, an annular groove 10 is formed on the inner side of the tensioning sleeve 3, and when the tensioning sleeve 3 is sleeved on the positioning mandrel 5, an oil cavity 11 is formed between the inner wall of the annular groove 10 and the outer wall of the positioning mandrel 5.
Specifically, it should be noted that the annular groove 10 of the tensioning sleeve 3 is of a thin-walled structure, and the thickness of the thin wall is 1.5 mm. Wherein the dimensional tolerance of the inner circle and the outer circle is IT7/0.02 respectively, and the coaxiality is
The inner hole of the inner sleeve is matched with the excircle of the positioning mandrel 5, thereby ensuring the centering of the tensioning sleeve 3 on a shaft system
And the contact uniformity of the excircle and the inner hole wall of the friction sleeve 1 is ensured when the tensioning sleeve 3 is tensioned by hydraulic pressure.
The clearance between the excircle of the tensioning sleeve 3 and the inner hole wall of the friction sleeve 1 is controlled in a smaller range, so that the excircle of the tensioning sleeve 3 can be uniformly and reliably contacted with the inner hole wall of the friction sleeve 1 in the uniform outward-tensioning deformation range, the friction contact area is increased, and the influence caused by the fact that the waist drum-shaped phenomenon is generated when the tensioning sleeve 3 expands outwards so as to reduce the contact area is avoided or reduced.
As shown in fig. 1 to 4, the oil inlet passage 8 and the oil outlet passage 6 are respectively arranged at the upper end and the lower end of the positioning mandrel 5;
the oil inlet channel 8 comprises an oil inlet hole and a first oil through hole, the oil inlet hole is transversely formed, the first oil through hole is formed along the radial direction of the positioning mandrel 5, and two ends of the first oil through hole are respectively communicated with the oil inlet hole and the oil cavity 11;
the oil outlet channel 6 comprises an oil outlet hole and a second oil through hole, the oil outlet hole is transversely formed, the second oil through hole is formed along the radial direction of the positioning mandrel 5, and two ends of the second oil through hole are respectively communicated with the oil outlet hole and the oil cavity 11.
Specifically, it should be noted that the oil inlet passage 8 and the oil outlet passage 6 have the same structure, but the two passages are different in the position on the positioning mandrel 5. The first oil through hole and the oil inlet hole can be opened at the lower end of the positioning mandrel 5 as the oil inlet channel 8, the second oil through hole and the oil outlet hole can be opened at the upper end of the positioning mandrel 5 as the oil outlet channel 6, and the circulation of hydraulic oil can be realized after the external hydraulic equipment is connected.
As shown in fig. 1 to 4, a first sealing groove 4 is formed at an end of an outer circle of the positioning mandrel 5, and a first sealing ring is embedded in the first sealing groove 4;
a second sealing groove 2 is formed in one end, far away from the first sealing groove 4, of the inner side of the tensioning sleeve 3, and a second sealing ring is embedded in the second sealing groove 2;
the first sealing ring and the second sealing ring are respectively positioned at two sides of the oil chamber 11.
Specifically, it should be noted that a first sealing ring and a second sealing ring are respectively embedded in the first sealing groove 4 and the second sealing groove 2, and the first sealing ring and the second sealing ring can seal two ends of the oil chamber 11. In order to further improve the sealing performance, the first sealing groove 4 and the second sealing groove 2 are both provided in two.
In order to facilitate the installation of the tensioning sleeve 3 on the positioning mandrel 5, a boss 7 is arranged at one end of the positioning mandrel 5, which is far away from the friction sleeve 1;
the first end of the tensioning sleeve 3 extends to the end face of the boss 7, and the second end of the tensioning sleeve 3 is in contact with the other end of the positioning core shaft 5 and is fixedly connected with the positioning core shaft through a bolt. The positioning mandrel 5, the tensioning sleeve 3 and the friction sleeve 1 are coaxially arranged.
In order to improve the friction force between the friction sleeve 1 and the tensioning sleeve 3, a friction plate 12 is sleeved on the inner side of the friction sleeve 1, the friction plate 12 can be made of a material with a high friction coefficient, the tensioning sleeve 3 is sleeved in the friction sleeve 1, and the outer wall of the oil cavity 11 corresponds to the friction plate 12. The friction plate 12 and the friction sleeve 1 are coaxially arranged, and the friction plate 12 is embedded in the inner wall of the friction sleeve 1 and bonded through connecting glue.
According to another aspect of the present application, a transmission system is provided, which includes the above-mentioned hydraulic expansion locking rotating shaft structure.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. The utility model provides a hydraulic pressure locking rotation axis structure that rises which characterized in that includes: the friction sleeve, the tensioning sleeve and the positioning mandrel are arranged on the outer side of the positioning mandrel; wherein the content of the first and second substances,
the tensioning sleeve is sleeved on the positioning mandrel, two ends of the tensioning sleeve are hermetically fixed with two ends of the positioning mandrel, and an oil cavity is arranged between the tensioning sleeve and the excircle of the positioning mandrel;
an oil inlet channel and an oil outlet channel which are communicated with the oil cavity are formed in the positioning mandrel;
the friction sleeve is sleeved on the tensioning sleeve, and the end part of the friction sleeve is in transmission connection with a main shaft system; the friction sleeve and the tensioning sleeve have variable gaps, so that the tensioning sleeve can be driven by hydraulic pressure to expand outwards to be in contact with the inner wall of the friction sleeve, and static friction force is generated.
2. The hydraulic expansion-compression locking rotating shaft structure as claimed in claim 1, wherein an annular groove is formed inside the expansion sleeve, and when the expansion sleeve is sleeved on the positioning mandrel, the oil chamber is formed between the inner wall of the annular groove and the outer wall of the positioning mandrel.
3. The hydraulic expansion-compression locking rotating shaft structure as claimed in claim 2, wherein the oil inlet channel and the oil outlet channel are respectively arranged at the upper end and the lower end of the positioning mandrel;
the oil inlet channel comprises an oil inlet hole and a first oil through hole, the oil inlet hole is transversely formed, the first oil through hole is formed along the radial direction of the positioning mandrel, and two ends of the first oil through hole are respectively communicated with the oil inlet hole and the oil cavity;
the oil outlet channel comprises an oil outlet hole and a second oil through hole, the oil outlet hole is formed in the transverse direction, the second oil through hole is formed in the radial direction of the positioning mandrel, and two ends of the second oil through hole are communicated with the oil outlet hole and the oil cavity respectively.
4. The hydraulic expansion-compression locking rotating shaft structure as claimed in any one of claims 1 to 3, wherein a first sealing groove is formed at an end of an outer circle of the positioning mandrel, and a first sealing ring is embedded in the first sealing groove;
a second sealing groove is formed in one end, far away from the first sealing groove, of the inner side of the tensioning sleeve, and a second sealing ring is embedded in the second sealing groove;
the first sealing ring and the second sealing ring are respectively positioned on two sides of the oil cavity.
5. The hydraulic tension-compression locking rotating shaft structure as claimed in claim 4, wherein the number of the first seal groove and the second seal groove is two.
6. The hydraulic tension-compression locking rotating shaft structure as claimed in claim 4, wherein a boss is arranged at one end of the positioning mandrel away from the friction sleeve;
the first end of the tensioning sleeve extends to the end face of the boss, and the second end of the tensioning sleeve is in contact with the other end of the positioning mandrel and is fixedly connected with the positioning mandrel through a bolt.
7. The hydraulic expansion-compression locking rotating shaft structure as claimed in claim 5 or 6, wherein the positioning mandrel, the expansion sleeve and the friction sleeve are coaxially arranged.
8. The hydraulic expansion-locking rotating shaft structure as claimed in claim 7, wherein a friction plate is sleeved inside the friction sleeve, the expansion sleeve is sleeved inside the friction sleeve, and the outer wall of the oil chamber corresponds to the friction plate.
9. The structure of a hydraulic tension-lock rotating shaft as claimed in claim 8, wherein the friction plate is coaxially arranged with the friction sleeve, and the friction plate is embedded in the inner wall of the friction sleeve and bonded by a connecting glue.
10. A transmission system comprising a fluid pressure lock rotating shaft structure according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122547684.5U CN215980399U (en) | 2021-10-22 | 2021-10-22 | Hydraulic expansion pressure locking rotating shaft structure and transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122547684.5U CN215980399U (en) | 2021-10-22 | 2021-10-22 | Hydraulic expansion pressure locking rotating shaft structure and transmission system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215980399U true CN215980399U (en) | 2022-03-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122547684.5U Active CN215980399U (en) | 2021-10-22 | 2021-10-22 | Hydraulic expansion pressure locking rotating shaft structure and transmission system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215980399U (en) |
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2021
- 2021-10-22 CN CN202122547684.5U patent/CN215980399U/en active Active
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