CN214037295U

CN214037295U - Central swivel joint with rotation angle monitoring function

Info

Publication number: CN214037295U
Application number: CN202022292542.4U
Authority: CN
Inventors: 曹寿林; 徐回; 李筱凡
Original assignee: Tengxuan Technology Co ltd
Current assignee: Tengxuan Technology Co ltd
Priority date: 2020-10-14
Filing date: 2020-10-14
Publication date: 2021-08-24
Anticipated expiration: 2030-10-14

Abstract

The utility model provides a central rotary joint with turned angle monitoring function, include: the sensor comprises a revolving body, a revolving shaft, an end cover, a fixed shaft and a sensor element; the central rotary joint is further provided with a spacer bush, a clamp spring, a first gasket and a second gasket, the tail end of the rotating shaft is provided with a positioning step, the diameter of the positioning step is smaller than the outer diameter of the rotating shaft, the first gasket is sleeved on the periphery of the positioning step, the spacer bush is sleeved on the periphery of the positioning step and arranged on the outer side of the first gasket, a clamp spring groove is formed in the outer wall of the positioning step, and the clamp spring is clamped in the clamp spring groove and arranged on the outer side of the spacer bush; the second gasket is arranged between the end face of the tail end of the rotating shaft and the inner end face of the end cover; the central rotary joint with the rotation angle monitoring function has the advantages that the internal friction loss is extremely low, the service life of equipment is prolonged, the relative rotation angle of the upper frame and the lower frame is monitored, and a detector can conveniently monitor the working condition.

Description

Central swivel joint with rotation angle monitoring function

Technical Field

The utility model relates to a central authorities 'rotary joint especially relates to a central authorities' rotary joint with turned angle monitoring function.

Background

The central swivel joint is widely used in the field of construction machines such as excavators and cranes, is used for pipeline connection between a fixed part and a rotating part, and mainly plays a role in conveying media such as hydraulic oil. The spacer bush which has the limiting effect between the revolving shaft and the revolving body adopted by the existing central revolving joint is respectively contacted with the revolving body and the revolving shaft, because the hardness of the materials is similar, the contact surfaces are subjected to adhesive abrasion and even occlusion locking faults, and the loss to equipment is large; and the relative rotation angle between the upper frame and the lower frame can not be clearly measured, and certain influence is caused on the subsequent data analysis and maintenance.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: relative rotation angle that the frame takes place about the monitoring, the utility model provides a central swivel joint with turned angle monitoring function solves above-mentioned problem.

The utility model provides a technical scheme that its technical problem adopted is: a central swivel joint with a swivel angle monitoring function comprising: the sensor comprises a revolving body, a revolving shaft, an end cover, a fixed shaft and a sensor element; the central rotary joint is further provided with a spacer bush, a clamp spring, a first gasket and a second gasket, the tail end of the rotating shaft is provided with a positioning step, the diameter of the positioning step is smaller than the outer diameter of the rotating shaft, the first gasket is sleeved on the periphery of the positioning step, the spacer bush is sleeved on the periphery of the positioning step and arranged on the outer side of the first gasket, a clamp spring groove is formed in the outer wall of the positioning step, and the clamp spring is clamped in the clamp spring groove and arranged on the outer side of the spacer bush; the second gasket is arranged between the end face of the tail end of the rotating shaft and the inner end face of the end cover.

Further, the sensor element is mounted on the top end of the rotating shaft; the sensor element comprises a stator and a rotor, the stator is fixedly arranged at the top end of the fixed shaft, and the rotator drives the rotor to rotate.

Furthermore, a through hole in the vertical direction is formed in the rotating shaft, the fixed shaft penetrates through the through hole, the top end of the fixed shaft is connected with the sensor element, and the tail end of the fixed shaft is fixed on the end cover in an interference fit mode.

Furthermore, a supporting sleeve is further arranged in the through hole, the supporting sleeve is sleeved on the fixed shaft, and the outer wall of the supporting sleeve is attached to the inner wall of the through hole.

The beneficial effects of the utility model are that, the utility model relates to a central authorities rotary joint with turned angle monitoring function, inside friction loss is minimum, extension equipment life to frame takes place relative pivoted angle about having the monitoring, makes things convenient for the inspector to monitor the operating mode.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a cross-sectional view of a preferred embodiment of a central swivel joint with a swivel angle monitoring function according to the present invention.

Fig. 2 is a partial enlarged view of a preferred embodiment of the central swivel joint with rotation angle monitoring of the present invention.

Fig. 3 is a left side view of a preferred embodiment of the central swivel with rotation angle monitoring of the present invention.

Fig. 4 is a right side view of a preferred embodiment of the central swivel with swivel angle monitoring of the present invention.

Fig. 5 is a schematic structural diagram of a preferred embodiment of the central swivel joint with rotation angle monitoring function according to the present invention.

In the figure, 1, a revolving body, 2, a revolving shaft, 3, an end cover, 4, a fixed shaft, 5, a sensor element, 6, a spacer bush, 7, a snap spring, 8, a first gasket, 9, a second gasket, 10, a stator, 11, a rotor, 12, a supporting sleeve, 13 and a through hole are arranged.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used only for convenience in describing and simplifying the present invention, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present invention includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present invention.

As shown in fig. 1, the utility model provides a central swivel joint with turned angle monitoring function, include: a revolving body 1, a revolving shaft 2, an end cover 3, a dead axle 4 and a sensor element 5; the central rotary joint is also provided with a spacer bush 6, a clamp spring 7, a first gasket 8 and a second gasket 9, the tail end of the rotating shaft 2 is provided with a positioning step, the diameter of the positioning step is smaller than the outer diameter of the rotating shaft 2, the first gasket 8 is sleeved on the periphery of the positioning step, the spacer bush 6 is sleeved on the periphery of the positioning step and arranged outside the first gasket 8, a clamp spring 7 groove is formed in the outer wall of the positioning step, and the clamp spring 7 is clamped in the clamp spring 7 groove and arranged outside the spacer bush 6;

the second spacer 9 is arranged between the end face of the end of the pivot shaft 2 and the inner end face of the end cap 3. The central rotating joint takes the rotating shaft 2 and the revolving body 1 as main bodies, when the rotating shaft 2 and the revolving body 1 rotate relatively, the hardness of the central rotating joint in the prior art is high because the materials adopted by the rotating shaft 2 and the revolving body 1 are consistent, and the spacer 6, the rotating shaft 2 and the revolving body 1 are easy to be occluded, so that the loss is large; the central rotary joint is provided with the two gaskets, so that the hardness of the contact part has certain step change, the abrasion resistance of the gaskets and the revolving body 1 and the abrasion resistance of the gaskets and the revolving shaft 2 during relative movement are improved, and the faults of adhesive abrasion and even occlusion locking between contact surfaces with close hardness are avoided.

The clamp spring 7 fills the groove of the rotating shaft 2, the partition plate is arranged above the clamp spring 7, the first gasket 8 is arranged above the partition plate and clings to the rotating body 1, and the partition plate and the first gasket 8 are matched with the clamp spring 7 to prevent the rotating shaft 2 from sliding upwards; the second gasket 9 is arranged at the contact position of the revolving body 1 and the bottom of the revolving shaft 2, so that the revolving shaft 2 cannot slide downwards, a gap is formed between the upper part of the revolving shaft 2 and the revolving body 1, the possibility of meshing the upper part of the revolving shaft 2 and the revolving body 1 is reduced, the hardness difference between the partition plate and the revolving body 1 is large, meshing is not easy to occur, loss is small, oil is filled in the revolving shaft 2 and the revolving body 1 during working, parts are lubricated, internal friction loss is extremely small, and the service life of equipment is prolonged.

The sensor element 5 is arranged at the top end of the rotating shaft 2, the sensor element 5 comprises a stator 10 and a rotor 11, the stator 10 is fixedly arranged at the top end of the fixed shaft 4, the rotating shaft 2 and the rotor 11 are fixed with an upper frame, the stator 10, the fixed shaft 4 and the rotating body 1 are fixed with a lower frame, when the upper frame and the lower frame rotate relatively, the lower frame is connected with the rotating body 1 and fixed relatively, the upper frame is connected with the rotating shaft 2 and rotates relatively, and the relative rotation between the stator 10 and the rotor 11 of the sensor element 5 is converted into the relative rotation between the stator 10 and the rotor 11, so that the relative rotation angle of the upper frame and the lower frame in a working range can be detected.

The rotating shaft 2 is provided with a vertical through hole 13, the fixed shaft 4 penetrates through the through hole 13, the tail end of the fixed shaft is fixed on the end cover 3 in an interference fit mode, the fixed shaft 4 is fixed with the end cover 3, the top end of the fixed shaft 4 is connected with the sensor element 5, when the lower frame rotates relatively, the lower frame does not rotate relatively, the fixed shaft 4 is driven to be fixed, namely the stator 10 on the fixed shaft 4 does not rotate relatively, the upper frame is connected with the rotating shaft 2 to rotate relatively, namely the rotor 11 on the rotating shaft 2 rotates relatively, therefore, the rotor 11 rotates relative to the stator 10, and the sensor element 5 monitors the angle of the rotor 11 and the stator 10 rotating relatively.

A supporting sleeve 12 is arranged between the fixed shaft 4 and the through hole 13, and the supporting sleeve 12 is made of polytetrafluoroethylene and plays a role of self-skidding; the dead axle 4 is arranged in the inner hole of the supporting sleeve 12 in a penetrating way, and the supporting sleeve 12 is mainly used for increasing the stability of the rotation of the dead axle 4 and avoiding the unfavorable conditions of shaking and the like caused by the overlong length of the dead axle 4.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic representation of the term does not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A central swivel joint with a swivel angle monitoring function comprising: the rotary body (1), the rotary shaft (2), the end cover (3), the fixed shaft (4) and the sensor element (5); the method is characterized in that:

the central rotary joint is further provided with a spacer bush (6), a clamp spring (7), a first gasket (8) and a second gasket (9), a positioning step is arranged at the tail end of the rotating shaft (2), the diameter of the positioning step is smaller than the outer diameter of the rotating shaft (2), the first gasket (8) is sleeved on the periphery of the positioning step, the spacer bush (6) is sleeved on the periphery of the positioning step and arranged on the outer side of the first gasket (8), a clamp spring (7) groove is formed in the outer wall of the positioning step, and the clamp spring (7) is clamped into the clamp spring (7) groove and arranged on the outer side of the spacer bush (6);

the second gasket (9) is arranged between the end face of the tail end of the rotating shaft (2) and the inner end face of the end cover (3).

2. The center rotary joint having a turning angle monitoring function according to claim 1, characterized in that: the sensor element (5) is arranged at the top end of the rotating shaft (2);

the sensor element (5) comprises a stator (10) and a rotor (11), the stator (10) is fixedly arranged at the top end of the fixed shaft (4), and the rotator (1) drives the rotor (11) to rotate.

3. The center rotary joint having a turning angle monitoring function according to claim 1, characterized in that: a through hole (13) in the vertical direction is formed in the rotating shaft (2), the fixed shaft (4) penetrates through the through hole (13), the top end of the fixed shaft (4) is connected with the sensor element (5), and the tail end of the fixed shaft is fixed on the end cover (3) in an interference fit mode.

4. The center rotary joint having a turning angle monitoring function according to claim 3, wherein: a support sleeve (12) is also arranged in the through hole (13), and the support sleeve is made of polytetrafluoroethylene; the supporting sleeve (12) is sleeved on the fixed shaft (4), and the outer wall of the supporting sleeve (12) is attached to the inner wall of the through hole (13).