CN216407459U

CN216407459U - Split type revolving shaft structure and high-speed revolving oil cylinder

Info

Publication number: CN216407459U
Application number: CN202123324671.8U
Authority: CN
Inventors: 孙贤良; 李传飞; 孙贤青; 朱通; 高伟强
Original assignee: Beidefu Mechanics And Technology Changzhou Co ltd
Current assignee: Beidefu Mechanics And Technology Changzhou Co ltd
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2022-04-29
Anticipated expiration: 2031-12-27

Abstract

The utility model relates to a split type rotating shaft structure and a high-speed rotating oil cylinder.A one-piece rotating shaft structure in the traditional middle-solid rotating shaft structure is arranged to be a cover plate and a rotating shaft split body, the rotating shaft split body comprises a fixed disc and a guide shaft, the guide shaft comprises a first shaft body and a second shaft body which are arranged at two sides of the fixed disc, the second shaft body is adapted to a through hole, a second oil way positioned on the guide shaft is communicated with a first oil way in the radial direction of the cover plate, and is communicated with a fourth oil way in a cylinder body through the first oil way, so that a piston is pushed towards the rotating shaft split body after oil is introduced; the third oil way on the guide shaft is the same as the cavity in the cylinder body, so that the piston is pushed towards the bottom of the cylinder body after oil is introduced. An oil guide cavity is formed between the split body of the rotating shaft and the inner wall of the cover plate, and the oil guide cavity is used as a transition stage for communicating the oil circuit of the rotating shaft with the oil circuit of the cylinder body and can be matched with a plurality of first oil circuits and a plurality of fourth oil circuits which are correspondingly arranged, so that the oil speed of the oil guide cylinder body is higher.

Description

Split type revolving shaft structure and high-speed revolving oil cylinder

Technical Field

The utility model relates to the technical field of rotary oil cylinders, in particular to a split type rotary shaft structure and a high-speed rotary oil cylinder.

Background

A slewing cylinder, also known as a hydraulic slewing cylinder, is a tightly assembled fitting that can apply hydraulic pressure in a small space to integrate a very high torque and can be controlled accurately and easily.

The existing common rotary oil cylinder has the advantages that the rotary shaft and the cover plate of the cylinder body are integrally arranged, so that the integrated rotary shaft structure and the internal oil circuit of the integrated rotary shaft structure are inconvenient to process, when maintenance and replacement are needed, the cover plate part and the rotary shaft are required to be detached and replaced together, the cost is wasted, and the maintenance and replacement are inconvenient.

In view of the above problems, the designer actively makes research and innovation based on the practical experience and professional knowledge that is abundant for many years in engineering application of such products, so as to create a split-type revolving shaft structure and a high-speed revolving cylinder, and make the revolving shaft structure and the high-speed revolving cylinder more practical.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a split type rotary shaft structure and a high-speed rotary oil cylinder aiming at the defects in the prior art.

In order to achieve the purpose, the utility model adopts the technical scheme that: a split-type pivot shaft structure comprising: the oil cylinder cover comprises a cover plate and a rotating shaft split body, wherein the rotating shaft split body is fixedly connected with the cover plate through a bolt, and the cover plate is fixedly connected with the oil cylinder body through a bolt;

the cover plate is provided with a through hole, the inner wall of the through hole is provided with a first oil way along the radial direction of the cover plate, and an oil outlet of the first oil way is arranged towards one side of the cover plate, which is far away from the split body of the rotating shaft;

the rotary shaft split type comprises a fixed disc and a guide shaft, the guide shaft comprises a first shaft body and a second shaft body, the first shaft body and the second shaft body are arranged on two sides of the fixed disc, the second shaft body is matched with the through hole, a second oil path and a third oil path are further arranged on the guide shaft, the second oil path is communicated with the first oil path, oil inlets of the second oil path and the third oil path are located on the first shaft body, and oil outlets are located on the second shaft body.

Furthermore, an annular groove is formed in the outer wall of the second shaft body, an oil outlet of the second oil path is located in the annular groove, and the annular groove is arranged corresponding to an oil inlet of the first oil path;

when the rotating shaft is connected with the cover plate in a split mode, an oil guide cavity is formed between the annular groove and the inner wall of the through hole, and the first oil path and the second oil path are communicated through the oil guide cavity.

Further, an oil outlet of the third oil path is located on the end face of the second shaft body.

Further, oil inlets of the second oil path and the third oil path are respectively arranged at different axial positions of the first shaft body along the axial direction of the guide shaft.

Furthermore, a limit groove is formed in one side, facing the rotating shaft split body, of the cover plate, and the limit groove is matched with the circumferential outline of the fixed disc.

Furthermore, a first sealing ring is arranged between the fixed disc and the limiting groove, and a second sealing ring is arranged between the second shaft body and the through hole.

A high-speed rotary oil cylinder comprises a cylinder body, a piston, an oil inlet shell and the split type rotary shaft structure, wherein the oil inlet shell is arranged on the outer ring of a first shaft body and is in rotary connection with the outer ring of the first shaft body, a third oil path is communicated with a cavity formed by a cover plate and the cylinder body, and the piston is movably arranged in the cavity;

the cylinder body is provided with a fourth oil way, the first oil way is communicated with the fourth oil way, an oil inlet of the fourth oil way is positioned on the end surface of the open end of the cylinder body, and an oil outlet of the fourth oil way is positioned on the bottom surface of the inner wall of the cylinder body.

Furthermore, the oil outlet of the first oil path and the oil inlet of the fourth oil path are correspondingly arranged, the first oil path is provided with a plurality of oil outlets along the radial direction of the cover plate, and the fourth oil path is provided with a plurality of oil outlets corresponding to the first oil path.

Further, the oil inlets of the second oil path and the third oil path are respectively arranged corresponding to the two oil inlet joints on the oil inlet shell.

The utility model has the beneficial effects that:

in the application, the integrated rotating shaft structure in the conventional middle-solid rotating shaft structure is arranged to be a split structure, namely the integrated rotating shaft structure is divided into a cover plate and a rotating shaft split body, so that an oil way leading to a cylinder body is convenient to process, and the integral structure of the oil cylinder can be lighter and thinner due to the split design;

an oil guide cavity is formed between the split body of the rotating shaft and the inner wall of the cover plate, and the oil guide cavity is used as a transition stage for communicating the oil circuit of the rotating shaft with the oil circuit of the cylinder body and can be matched with a plurality of first oil circuits and a plurality of fourth oil circuits which are correspondingly arranged, so that the oil speed of the oil guide cylinder body is higher.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view showing the construction of a split rotary shaft according to an embodiment of the present invention;

FIG. 2 is a schematic view showing a structure of a split body of a rotating shaft according to an embodiment of the present invention;

FIG. 3 is an axial view of a split body of the rotating shaft according to the embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view taken along line A-A in FIG. 3;

FIG. 5 is a sectional view showing a state where the rotating shaft is coupled to the cover plate in a split state in accordance with the embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a high-speed rotary cylinder according to an embodiment of the present invention;

FIG. 7 is an exploded view of the high speed swing cylinder according to the embodiment of the present invention;

fig. 8 is a schematic diagram of an oil path of the high-speed rotary oil cylinder in the embodiment of the utility model.

Reference numerals: 1. a cover plate; 11. a through hole; 12. a first oil passage; 13. a limiting groove; 14. a first seal ring; 2. the rotating shaft is separated; 21. fixing the disc; 22. a guide shaft; 221. a second oil passage; 222. a third oil passage; 23. a first shaft body; 24. a second shaft body; 241. a ring groove; 242. a second seal ring; 25. an oil guide cavity; 3. a cylinder body; 31. a cavity; 32. a fourth oil passage; 4. a piston; 5. and (4) an oil inlet shell.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 to 5, the split-type rotating shaft structure includes a cover plate 1 and a rotating shaft split body 2, the rotating shaft split body 2 is fixedly connected with the cover plate 1 by bolts, and the cover plate 1 is fixedly connected with an oil cylinder body 3 by bolts.

In this application, the integral type revolving axle structure in the real revolving axle structure in will having now sets up to split type structure, divide into apron 1 and revolving axle components of a whole that can function independently 2 promptly, makes the oil circuit that leads to cylinder body 3 convenient to process, and split type design can make hydro-cylinder overall structure more frivolous.

A through hole 11 is formed in the cover plate 1, a first oil way 12 is formed in the inner wall of the through hole 11 along the radial direction of the cover plate 1, and an oil outlet of the first oil way 12 is arranged towards one side, away from the rotating shaft split body 2, of the cover plate 1; the rotating shaft split body 2 comprises a fixed disc 21 and a guide shaft 22, the guide shaft 22 comprises a first shaft body 23 and a second shaft body 24 which are arranged on two sides of the fixed disc 21, the second shaft body 24 is matched with the through hole 11, a second oil path 221 and a third oil path 222 are further arranged on the guide shaft 22, the second oil path 221 is communicated with the first oil path 12, oil inlets of the second oil path 221 and the third oil path 222 are both located on the first shaft body 23, and oil outlets of the second oil path 221 and the third oil path 222 are both located on the second shaft body 24.

In the specific implementation process, holes are drilled from the circumferential side wall of the cover plate 1 towards the through hole 11 along the radial direction, the hole is drilled and punched on the surface, away from the rotating shaft split body 2, of the cover plate 1 corresponding to the radial hole, and finally a plug is arranged at the position, located at the radial hole, of the outer wall of the cover plate 1 to complete machining of the first oil path 12; the guide shaft 22 is perforated in the axial direction and the radial direction thereof to form a second oil passage 221 and a third oil passage 222, respectively.

As a preference of the above embodiment, an annular groove 241 is opened on the outer wall of the second shaft body 24, the oil outlet of the second oil path 221 is located in the annular groove 241, and the annular groove 241 is arranged corresponding to the oil inlet of the first oil path 12; when the rotating shaft split body 2 is connected with the cover plate 1, an oil guide cavity 25 is formed between the annular groove 241 and the inner wall of the through hole 11, and the first oil path 12 and the second oil path 221 are communicated through the oil guide cavity 25.

An oil guide cavity 25 is formed between the second shaft body 24 and the inner wall of the through hole 11, and is used as a transition stage for communicating the rotary shaft oil path with the cylinder body 3 oil path, and a plurality of first oil paths 12 and a plurality of fourth oil paths 32 which are correspondingly arranged can be matched, so that the oil guiding to the cylinder body 3 is faster.

An oil outlet of the third oil passage 222 is located on the end surface of the second shaft body 24. When the third oil path 222 is filled with oil, the piston 4 is driven to move towards the bottom of the cylinder 3; when the oil is supplied to the second oil passage 221, the drive piston 4 moves toward the rotation shaft division body 2. The reciprocating motion of the piston 4 is achieved by taking oil into the second oil passage 221 and the third oil passage 222.

Further, oil inlets of the second oil passage 221 and the third oil passage 222 are respectively arranged at different axial positions of the first shaft body 23 along the axial direction of the guide shaft 22. Two oil inlet connecting pipes are conveniently arranged at two positions of the oil inlet shell 5 in the rotary oil cylinder in a matching mode, so that oil inlet is respectively realized, and different oil paths are driven to realize the reciprocating motion of the piston 4.

In the present application, a limiting groove 13 is provided on the side of the cover plate 1 facing the rotation axis division body 2, and the limiting groove 13 is adapted to the circumferential contour of the fixed disk 21. The assembly between the cover plate 1 and the rotating shaft split body 2 is convenient. A first seal ring 14 is provided between the fixed disk 21 and the stopper groove 13, and a second seal ring 242 is provided between the second shaft body 24 and the through hole 11. And oil sealing between the connecting plane of the guide shaft 22 and the fixed disc 21 and the axial curved surface is realized.

The application also discloses a high-speed rotary oil cylinder, as shown in fig. 6 to 8, including cylinder body 3, piston 4 and oil inlet shell 5, still include above-mentioned split type rotary shaft structure, wherein, oil inlet shell 5 sets up in first axis body 23 outer lane and is connected rather than the rotation, and third oil circuit 222 is linked together with the cavity 31 that apron 1 and cylinder body 3 formed, and piston 4 can move and set up in cavity 31.

Specifically, a fourth oil path 32 is arranged on the cylinder 3, the first oil path 12 is communicated with the fourth oil path 32, an oil inlet of the fourth oil path 32 is located on the end surface of the open end of the cylinder 3, and an oil outlet of the fourth oil path 32 is located on the bottom surface of the inner wall of the cylinder 3. An oil outlet of the first oil path 12 corresponds to an oil inlet of the fourth oil path 32, the first oil path 12 is provided with a plurality of oil outlets along the radial direction of the cover plate 1, and the fourth oil path 32 is provided with a plurality of oil outlets corresponding to the first oil path 12. Oil inlets of the second oil path 221 and the third oil path 222 are respectively arranged corresponding to two oil inlet joints on the oil inlet shell 5.

In the implementation process, the reciprocating motion of the piston 4 is realized by respectively introducing oil towards two oil inlet joints of the oil inlet shell 5, specifically, the second oil path 221 on the guide shaft 22 is communicated with the first oil path 12 in the radial direction of the cover plate 1, and is communicated with the fourth oil path 32 in the cylinder body 3 through the first oil path 12, so that the piston 4 is pushed towards the rotating shaft split body 2 after oil introduction; the third oil passage 222 provided in the guide shaft 22 is the same as the chamber 31 in the cylinder 3, and pushes the piston 4 toward the bottom of the cylinder 3 after the oil is introduced.

An oil guide cavity 25 is formed between the rotating shaft split body 2 and the inner wall of the cover plate 1, and is used as a transition stage for communicating the rotating shaft oil path with the cylinder body 3 oil path, and the oil guide cavity can be matched with a plurality of first oil paths 12 and a plurality of fourth oil paths 32 which are correspondingly arranged, so that the oil guide speed of the cylinder body 3 is higher.

It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A split-type pivot shaft structure, comprising: the rotary shaft split type oil cylinder comprises a cover plate (1) and a rotary shaft split body (2), wherein the rotary shaft split body (2) is fixedly connected with the cover plate (1) through bolts, and the cover plate (1) is fixedly connected with an oil cylinder body (3) through bolts;

a through hole (11) is formed in the cover plate (1), a first oil way (12) is formed in the inner wall of the through hole (11) along the radial direction of the cover plate (1), and an oil outlet of the first oil way (12) faces to one side, away from the rotating shaft split body (2), of the cover plate (1);

the rotary shaft split body (2) comprises a fixed disc (21) and a guide shaft (22), the guide shaft (22) comprises a first shaft body (23) and a second shaft body (24) which are arranged on two sides of the fixed disc (21), the second shaft body (24) is matched with the through hole (11), a second oil way (221) and a third oil way (222) are further arranged on the guide shaft (22), the second oil way (221) is communicated with the first oil way (12), oil inlets of the second oil way (221) and the third oil way (222) are both located on the first shaft body (23), and oil outlets are both located on the second shaft body (24).

2. The split-type revolving shaft structure according to claim 1, wherein a ring groove (241) is formed in the outer wall of the second shaft body (24), the oil outlet of the second oil path (221) is located in the ring groove (241), and the ring groove (241) is arranged corresponding to the oil inlet of the first oil path (12);

when the rotating shaft split body (2) is connected with the cover plate (1), an oil guide cavity (25) is formed between the annular groove (241) and the inner wall of the through hole (11), and the first oil way (12) is communicated with the second oil way (221) through the oil guide cavity (25).

3. The split rotary shaft structure according to claim 2, wherein an oil outlet of the third oil passage (222) is located on an end face of the second shaft body (24).

4. The split-type revolving shaft structure according to claim 3, wherein the oil inlets of the second oil passage (221) and the third oil passage (222) are respectively provided at different axial positions of the first shaft body (23) in the axial direction of the guide shaft (22).

5. The split-type revolving shaft structure according to claim 1, wherein a limiting groove (13) is provided on the side of the cover plate (1) facing the revolving shaft split body (2), and the limiting groove (13) is adapted to the circumferential contour of the fixed disk (21).

6. The split-type revolving shaft structure according to claim 5, wherein a first seal ring (14) is provided between the fixed disk (21) and the limiting groove (13), and a second seal ring (242) is provided between the second shaft body (24) and the through hole (11).

7. A high-speed rotary oil cylinder comprises a cylinder body (3), a piston (4) and an oil inlet shell (5), and is characterized by further comprising the split type rotary shaft structure as claimed in any one of claims 1 to 6, wherein the oil inlet shell (5) is arranged on the outer ring of the first shaft body (23) and is rotatably connected with the first shaft body, the third oil path (222) is communicated with a cavity (31) formed by the cover plate (1) and the cylinder body (3), and the piston (4) is movably arranged in the cavity (31);

a fourth oil way (32) is arranged on the cylinder body (3), the first oil way (12) is communicated with the fourth oil way (32), an oil inlet of the fourth oil way (32) is positioned on the end surface of the open end of the cylinder body (3), and an oil outlet of the fourth oil way is positioned on the bottom surface of the inner wall of the cylinder body (3).

8. The high-speed rotary oil cylinder according to claim 7, wherein an oil outlet of the first oil path (12) is arranged corresponding to an oil inlet of the fourth oil path (32), the first oil path (12) is arranged in plurality along the radial direction of the cover plate (1), and the fourth oil path (32) is arranged in plurality corresponding to the first oil path (12).

9. The high-speed rotary oil cylinder according to claim 7, wherein oil inlets of the second oil path (221) and the third oil path (222) are respectively arranged corresponding to two oil inlet joints on the oil inlet shell (5).