CN216479498U

CN216479498U - Central swivel joint

Info

Publication number: CN216479498U
Application number: CN202122632354.6U
Authority: CN
Inventors: 佟宁; 郭蕰光; 张晓磊
Original assignee: Liaoning Qingshan Heavy Industry Machinery Co ltd
Current assignee: Liaoning Qingshan Heavy Industry Machinery Co ltd
Priority date: 2021-10-31
Filing date: 2021-10-31
Publication date: 2022-05-10
Anticipated expiration: 2031-10-31

Abstract

The utility model discloses a central rotary joint which comprises a rotary shaft, wherein the outer side of the middle part and the outer side of the right part of the rotary shaft are fixedly connected to the inner sides of inner rings of two ball bearings, the outer sides of the ball bearings are fixedly connected to the middle part and the right part inside the rotary body respectively, the right side of the rotary body is in threaded connection with the outer sides of the left parts of bolts which surround the rotary shaft and are uniformly distributed, the right sides of the bolts are fixedly connected to the left side of a second gland, a cavity is arranged in the middle part of the right side inside the second gland, and an angular displacement sensor is fixedly connected to the middle part of the left side inside the cavity. According to the utility model, the angular displacement sensor is arranged on the axis of the rotating shaft, so that the rotating angle of the central rotating interface can be monitored in real time, and meanwhile, the ball bearing is adopted for connection, so that the friction force between the rotating shaft and the rotating body is reduced, the rotating efficiency of the rotating shaft is conveniently improved, and the device is practical, convenient, safe and environment-friendly.

Description

Central swivel joint

Technical Field

The utility model relates to the technical field of joints, in particular to a central rotary joint.

Background

The central swivel joint is an important part and plays an important role in connecting an upper pipeline and a lower pipeline. At present, rotary joint products relate to different fields such as engineering, coal, chemical industry, petroleum, ships, rail transit and the like, the industries are different, functional requirements on the rotary joint are different, and requirements on demand, functions and reliability of the rotary joint are continuously improved along with the development of economy, so that the rotary joint products with high efficiency and low consumption are developed and produced, diversified, multifunctional and high-technology contents are produced and sold, and the rotary joint products have important aims and meanings for expanding the market share of companies and improving the competitiveness and influence of enterprises.

At present, most of engineering machinery control systems require accurate detection of the rotation angle, and are mainly used for limiting the operation range of engineering machinery, most of central rotation joints on the market cannot detect the rotation angle in real time, so that the stability of the whole equipment cannot be improved, and meanwhile, most of central rotation joints on the market have high abrasion degree, are easy to damage, are troublesome to replace, are not environment-friendly and are inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides a central swivel joint.

In order to achieve the purpose, the utility model adopts the following technical scheme: a central rotary joint comprises a rotary shaft, wherein the left end of the rotary shaft is fixedly connected with a first gland, the outer side of the middle part and the outer side of the right part of the rotary shaft are fixedly connected with the inner sides of two ball bearing inner rings, the outer sides of the ball bearings are respectively and fixedly connected with the middle part and the right part inside the rotary body, the right side of the rotary body is in threaded connection with the outer side of the left part of a bolt which is uniformly distributed around the rotary shaft as the center, the right side of the bolt is fixedly connected with the left side of a second gland, the middle part of the right side inside the second gland is provided with a cavity, the middle part of the left side inside the cavity is fixedly connected with an angular displacement sensor, the middle part of the right side surface of the second gland is provided with a display screen, the middle part of the left side inside the second gland is fixedly connected with an anti-grinding ring, the middle part of the inside of the rotary shaft is provided with oil drainage channels which penetrate through the left side and the right side of the rotary shaft, a plurality of the rotary shafts which are uniformly distributed are arranged on the upper shaft and the lower shaft inside of the rotary shaft, the rotary body is axially provided with a plurality of oil way interfaces which are uniformly distributed and have different models, and the bottoms of the inner sides of the oil way interfaces are in threaded connection with ports of main oil ducts.

As a further description of the above technical solution:

the angular displacement sensor is electrically connected with a display screen.

As a further description of the above technical solution:

and the middle part of the left side in the revolving body is fixedly connected with a dustproof ring.

As a further description of the above technical solution:

and the left side of the anti-abrasion ring is connected to the right side of the rotating shaft in a sliding manner.

As a further description of the above technical solution:

and one side of the right side of the cavity, which is far away from the display screen, is provided with heat dissipation holes which are uniformly distributed around the display screen as the center.

As a further description of the above technical solution:

the middle part of the inside of the first gland is provided with an oil drainage through hole which penetrates through the left side and the right side of the first gland, and the right end of the oil drainage through hole is in threaded connection with the left end of an oil drainage channel.

As a further description of the above technical solution:

the part, far away from the oil drainage pore passage, of the interior of the first gland is provided with a main oil through hole penetrating through the left side and the right side of the first gland, and the right end of the main oil through hole is in threaded connection with the left end of the main oil pore passage.

As a further description of the above technical solution:

and an oil drainage end hole is formed in the part, far away from the cavity, of the second gland, and the left end of the oil drainage end hole is in threaded connection with the right end of the oil drainage channel.

The utility model has the following beneficial effects:

1. according to the utility model, firstly, the central rotary interface is provided with the angular displacement sensor on the axis of the rotary shaft, so that the rotary angle of the central rotary interface is monitored in real time, and the numerical value is displayed through the display screen, so that a user can acquire information, especially in the field of engineering machinery, the working range of engineering work can be ensured, and the stability of the whole equipment is prevented from being influenced by overlarge detection error of the rotary angle.

2. According to the utility model, the traditional sliding friction mode is replaced by the rolling friction mode of the ball bearings and the anti-abrasion ring is used, so that the friction force between the revolving shaft and the revolving body is effectively reduced, the loss is reduced, the revolving efficiency of the revolving shaft is improved, the service life of the central revolving joint is prolonged, and the anti-abrasion device is practical, convenient, safe and environment-friendly.

Drawings

Fig. 1 is a front structural view of a central swivel joint according to the present invention;

FIG. 2 is a left side view of a central swivel joint in accordance with the present invention;

fig. 3 is a right side view of a central swivel joint according to the present invention.

Illustration of the drawings:

1. a rotating shaft; 2. a revolving body; 3. a first gland; 4. an oil drainage duct; 5. an oil drainage through hole; 6. an oil drainage end hole; 7. a dust ring; 8. an anti-abrasion ring; 9. heat dissipation holes; 10. an angular displacement sensor; 11. a cavity; 12. a display screen; 13. a bolt; 14. a main oil gallery; 15. a main oil through hole; 16. a ball bearing; 17. a second gland; 18. an oil passage interface.

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. 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 invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, one embodiment of the present invention is provided: a central swivel joint comprises a swivel shaft 1, wherein the left end of the swivel shaft 1 is fixedly connected with a first gland 3, the outer side of the middle part and the outer side of the right part of the swivel shaft 1 are fixedly connected with the inner sides of inner rings of two ball bearings 16, the outer sides of the ball bearings 16 are respectively fixedly connected with the middle part and the right part inside a swivel body 2, the traditional sliding friction mode is replaced by the rolling friction mode of the ball bearings 16, the friction force between the swivel shaft 1 and the swivel body 2 is conveniently and effectively reduced, the loss is reduced, the swivel efficiency of the swivel shaft 1 is conveniently improved, the service life of the central swivel joint is prolonged, the right side of the swivel body 2 is in threaded connection with the outer side of the left part of a bolt 13 which is uniformly distributed around the swivel shaft 1 as the center, the right side of the bolt 13 is fixedly connected with the left side of a second gland 17, the middle part of the right side inside the second gland 17 is provided with a cavity 11, and the middle part of the left side inside the cavity 11 is fixedly connected with an angular displacement sensor 10, the middle part of the right side surface of the second gland 17 is provided with a display screen 12, an angular displacement sensor 10 is arranged on the axis of the revolving shaft 1, the revolving angle of the central revolving interface is monitored in real time, the numerical value is displayed through the display screen 12, a user can obtain information, the influence of overlarge detection error of the revolving angle on the stability of the whole equipment is avoided, the middle part of the left side inside the second gland 17 is fixedly connected with an anti-abrasion ring 8, the friction force between the revolving shaft 1 and the revolving body 2 is reduced by combining the use of a ball bearing 16, the loss is reduced, the revolving efficiency of the revolving shaft 1 is improved, the service life of the central revolving joint is prolonged, the central revolving joint is practical, convenient, safe and environment-friendly, the middle part inside the revolving shaft 1 is provided with oil drainage channels 4 which penetrate through the left side and the right side of the revolving shaft 1, the upper shaft side and the lower shaft side inside the revolving shaft 1 are provided with a plurality of main oil channels 14 which penetrate through the left side and the right side of the revolving shaft 1 and the revolving shaft and the evenly distributed, the upper and lower axial directions of the revolving body 2 are provided with a plurality of oil line interfaces 18 which are uniformly distributed and have different models, and the bottoms of the inner sides of the oil line interfaces 18 are all in threaded connection with the port of the main oil duct 14, so that the oil line can conveniently carry out multi-port joint transmission.

The angular displacement sensor 10 is electrically connected with a display screen 12, the middle part of the left side inside the revolving body 2 is fixedly connected with a dust ring 7 to prevent dust from permeating into a rotating gap, thereby causing certain function loss and reducing the service life of a central revolving joint, the left side of the wear ring 8 is slidably connected with the right side of the revolving shaft 1, one side of the right side of the cavity 11 far away from the display screen 12 is provided with radiating holes 9 which are uniformly distributed around the display screen 12 as the center, thereby facilitating the heat radiation of the angular displacement sensor 10 which is continuously used and improving the service life of the angular displacement sensor 10, the middle part inside the first gland 3 is provided with oil drainage through holes 5 which penetrate through the left side and the right side of the first gland 3, the right end of the oil drainage through hole 5 is in threaded connection with the left end of the oil drainage hole 4, the part inside the first gland 3 far away from the oil drainage hole 4 is provided with main oil through holes 15 which penetrate through the left side of the first gland 3, and the right end of the main oil through holes 15 is in threaded connection with the left end of the main oil hole 14, the part of the inside of the second gland 17, which is far away from the cavity 11, is provided with an oil drainage end hole 6, and the left end of the oil drainage end hole 6 is in threaded connection with the right end of the oil drainage channel 4, so that the interface oil way is communicated.

The working principle is as follows: when the rotary joint is used, the angular displacement sensor 10 is arranged on the line of the rotary shaft 1, the rotary angle of the central rotary interface during operation is monitored in real time and is transmitted to the display screen 12 for display, meanwhile, the ball rolling friction mode of the ball bearing 16 is adopted to replace the traditional sliding friction mode during operation of the central rotary interface, and the use of the anti-abrasion ring 8 is combined, so that the abrasion degree between the rotary shaft 1 and the rotary body 2 is reduced, the loss caused during rotary friction is reduced, and the rotary efficiency of the rotary shaft 1 is improved.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.

Claims

1. A central swivel joint comprising a swivel shaft (1), characterized in that: the left end of the rotating shaft (1) is fixedly connected with a first gland (3), the outer side of the middle part and the outer side of the right part of the rotating shaft (1) are fixedly connected with the inner sides of the inner rings of two ball bearings (16), the outer sides of the ball bearings (16) are respectively and fixedly connected with the middle part and the right part inside the rotating body (2), the right side of the rotating body (2) is in threaded connection with the outer side of the left part of a bolt (13) which is uniformly distributed around the rotating shaft (1) as the center, the right side of the bolt (13) is fixedly connected with the left side of a second gland (17), the middle part of the right side inside the second gland (17) is provided with a cavity (11), the middle part of the left side inside the cavity (11) is fixedly connected with an angular displacement sensor (10), the middle part of the surface of the right side of the second gland (17) is provided with a display screen (12), and the middle part of the left side inside the second gland (17) is fixedly connected with an anti-grinding ring (8), the oil drain hole (4) penetrating through the left side and the right side of the rotating shaft (1) is formed in the middle of the inside of the rotating shaft (1), a plurality of main oil holes (14) which are uniformly distributed and penetrate through the left side and the right side of the rotating shaft (1) are formed in the upper shaft side and the lower shaft side of the inside of the rotating shaft (1), a plurality of oil way connectors (18) which are uniformly distributed and have different models are axially arranged on the upper shaft side and the lower shaft side of the rotating body (2), and the bottoms of the inner sides of the oil way connectors (18) are in threaded connection with ports of the main oil holes (14).

2. A central swivel joint according to claim 1, wherein: the angular displacement sensor (10) is electrically connected with a display screen (12).

3. A central swivel joint according to claim 1, wherein: the middle part of the left side in the revolving body (2) is fixedly connected with a dustproof ring (7).

4. A central swivel joint according to claim 1, wherein: the left side of the anti-abrasion ring (8) is connected to the right side of the rotating shaft (1) in a sliding manner.

5. A central swivel joint according to claim 1, wherein: and one side of the right side of the cavity (11), which is far away from the display screen (12), is provided with radiating holes (9) which are uniformly distributed around the display screen (12) as the center.

6. A central swivel joint according to claim 1, wherein: the oil drainage device is characterized in that an oil drainage through hole (5) penetrating through the left side and the right side of the first gland (3) is formed in the middle of the inner portion of the first gland (3), and the right end of the oil drainage through hole (5) is in threaded connection with the left end of the oil drainage hole channel (4).

7. A central swivel joint according to claim 1, wherein: the part, far away from oil drainage pore (4), of the interior of the first gland (3) is provided with a main oil through hole (15) penetrating through the left side and the right side of the first gland (3), and the right end of the main oil through hole (15) is in threaded connection with the left end of the main oil pore (14).

8. A central swivel joint according to claim 1, wherein: the part, far away from cavity (11), of second gland (17) inside is provided with draining end hole (6), draining end hole (6) left end threaded connection is in draining pore (4) right-hand member.