CN113503413A

CN113503413A - Rotary joint capable of transmitting torque force

Info

Publication number: CN113503413A
Application number: CN202110687427.3A
Authority: CN
Inventors: 刘朋生; 赖汉国; 丁涛; 王成; 林禁
Original assignee: Runner Xiamen Corp
Current assignee: Runner Xiamen Corp
Priority date: 2021-06-21
Filing date: 2021-06-21
Publication date: 2021-10-15

Abstract

The invention discloses a rotary joint capable of transmitting torsion, which comprises a shell and a rotary shaft, wherein the rotary shaft is arranged in the shell and can rotate relative to the shell, one end of the rotary shaft is connected with a pneumatic element, the other end of the rotary shaft is connected with a motor, an air inlet hole is formed in the shell, an air outlet hole is formed in the rotary shaft, and an air channel which is matched and communicated with the air inlet hole and the air outlet hole is formed in the rotary shaft. Through the cooperation of rotation axis and casing, directly transmit pneumatic element with the torsion of motor on, the casing is static relatively simultaneously can not cause the trachea winding, and rotation axis and pneumatic element are also static relatively can not cause the trachea winding.

Description

Rotary joint capable of transmitting torque force

Technical Field

The invention relates to a rotary joint capable of transmitting torque.

Background

In the actual production of manufacturing industry, some pneumatic elements need to rotate, but the pneumatic elements are connected with air pipes, and the rotation can cause the air pipes to wind, even lead to the air pipes to break, so that certain potential safety hazards exist. At present, the existing rotary joint can be connected with a motor, but cannot transfer torque force, and cannot meet the requirements in actual production.

Disclosure of Invention

In order to solve the above technical problems, an object of the present invention is to provide a rotary joint capable of transmitting a torque.

The invention is realized by the following technical scheme:

the utility model provides a rotary joint that can transmit torsion, includes casing and rotation axis, the rotation axis is installed in the casing and can rotate relative to the casing, rotation axis one end is connected with pneumatic element, the rotation axis other end is connected with the motor, be equipped with the inlet port on the casing, be equipped with the venthole on the rotation axis, be equipped with in the rotation axis with advance, the gas circuit passageway of venthole cooperation UNICOM.

In the embodiment of the invention, the rotary shaft is provided with an annular notch at the joint with the air inlet hole so as to ensure the stable communication between the air inlet hole and the air passage in the rotating process.

In the embodiment of the invention, the rotating shaft is provided with sealing rings which are matched and sealed with the shell at two sides of the notch.

In the embodiment of the invention, bearing mounting positions are arranged on two sides of the shell, bearings are respectively arranged in the two bearing mounting positions, the inner ring of each bearing is matched with the rotating shaft, and the outer ring of each bearing is matched with the shell.

In the embodiment of the invention, the rotary shaft is provided with a clamping ring groove beside the bearing, and a clamping ring for fixing the bearing in the axial direction is arranged in the clamping ring groove.

In the embodiment of the invention, the other end of the rotating shaft is provided with a key groove, and the motor is connected with the rotating shaft in a matching way through the key groove.

In the embodiment of the invention, a threaded sealing element is arranged at the opening of the air channel communicated with the outside.

In the embodiment of the invention, the shell is provided with at least two air inlet holes, the air inlet holes are positioned on different diameters of the rotating shaft, the rotating shaft is provided with air outlet holes with the same number as the air inlet holes, and the air passage channels are mutually independent.

The rotary joint capable of transmitting the torsion has the following beneficial effects:

1. through the cooperation of rotation axis and casing, directly transmit pneumatic element with the torsion of motor on, the casing is static relatively simultaneously can not cause the trachea winding, and rotation axis and pneumatic element also static relatively can not cause the trachea winding, prevents that the trachea from damaging and leading to the potential safety hazard.

2. The rotary joint provided by the invention has the advantages of simple structure, convenience in processing, firmness, stability and difficulty in damage, and can meet different industrial requirements.

Drawings

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

Fig. 1 is a cross-sectional view of the present invention.

Fig. 2 is a block diagram of the present invention.

Fig. 3 is a sectional view taken along line CC in fig. 2.

Fig. 4 is a cross-sectional view of the invention after assembly.

Fig. 5 is a block diagram of the invention after assembly.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. 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.

Reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic may be included in at least one implementation of the invention. In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein.

Referring to the attached drawings of the specification, the invention discloses a rotary joint capable of transmitting torsion, which comprises a shell 10 and a rotary shaft 20, wherein the shell is a hollow cylinder, the rotary shaft is arranged in a smooth inner hole of the shell and can rotate relative to the shell, one end of the rotary shaft is connected with a pneumatic element 40, the other end of the rotary shaft is connected with a motor 50, an air inlet hole 11 is processed on the shell, an air outlet hole 21 capable of being connected with the pneumatic element is arranged outside the rotary shaft, and an air channel 22 matched and communicated with the air inlet hole and the air outlet hole is arranged in the rotary shaft. At this time, when the motor drives the rotating shaft and the pneumatic element to rotate, the shell is fixed on the external frame and kept still, so that the external air pipe connected to the air inlet hole also needs to be kept still, and the air pipe is prevented from being wound. The quantity of going up the air pocket on the casing can increase or reduce according to actual demand, correspondingly, and rotation axis fit in's gas circuit passageway and venthole also should cooperate the increase and decrease, and mutual independence between each gas circuit passageway. In this embodiment, two air inlets and two air passage channels are adopted.

Furthermore, the rotary shaft is provided with an annular notch 23 at the joint with the air inlet hole to ensure the stable communication between the air inlet hole and the air passage in the rotation process. Meanwhile, in order to prevent air leakage and air leakage at the joint of the air inlet hole and the air passage, the two sides of the notch of the rotating shaft are provided with sealing ring mounting grooves 24, and sealing rings in interference fit with the shell are arranged in the grooves, so that the sealing performance and the independence of the air passage are ensured. And because the front end of the rotating shaft is damaged when the air passage is processed, the front end of the rotating shaft is provided with an opening 25 communicated with the outside, and therefore, a spiral sealing element is required to be arranged at the opening to disconnect the air passage from the outside.

Furthermore, in order to ensure the coaxiality of the rotating shaft during rotation and reduce the abrasion between the housing and the rotating shaft, bearing mounting positions 12 are processed on both sides of the housing, and bearings are respectively mounted in the two bearing 30 mounting positions. The inner ring of the bearing is matched with the rotating shaft, and the outer ring of the bearing is matched with the shell, so that the rotating shaft effectively ensures the motion stability of the rotating shaft in the circumferential direction. The bearing on one side of the rotating shaft is fixed by the step surface of the rotating shaft, a clamping ring groove matched with the bearing is processed on the rotating shaft in order to fix the bearing on the other side, a clamping ring is arranged in the clamping ring groove 26, and the bearing is fixed by the clamping ring to prevent the bearing from falling off. One end of the rotating shaft can be provided with a boss matched with the pneumatic element for connection, the other end of the rotating shaft can be provided with a key groove 27, and a key on the motor is clamped into the key groove to realize the connection of the motor and the rotating shaft. Thus, the torque generated by the motor can be transmitted to the pneumatic element at the front end through the rotating shaft.

When the air inlet device is in actual use, the shell is connected with an external frame, so that the shell is firmly fixed, and a plurality of air pipes connected with the air inlet holes cannot be wound in a rotating manner; when the rotating shaft is driven by the motor to rotate, the torsion is transmitted to the pneumatic element, the pneumatic element starts to rotate, and the pneumatic element and the rotating shaft are relatively static, so that the section of the air pipe between the air outlet hole and the pneumatic element cannot be wound, and the air flowing out through the air passage channel enters the pneumatic element from the air outlet hole, so that the normal operation of the pneumatic element is realized. Therefore, the rotary joint can solve the problem that the air pipe is wound when the pneumatic component rotates, can directly transfer torsion and reduce the auxiliary mechanism.

While the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as described herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The rotary joint capable of transmitting the torsion is characterized by comprising a shell and a rotary shaft, wherein the rotary shaft is installed in the shell and can rotate relative to the shell, one end of the rotary shaft is connected with a pneumatic element, the other end of the rotary shaft is connected with a motor, an air inlet hole is formed in the shell, an air outlet hole is formed in the rotary shaft, and an air path channel which is communicated with the air inlet hole and the air outlet hole in a matched mode is formed in the rotary shaft.

2. The rotary joint capable of transmitting torque force as claimed in claim 1, wherein the rotary shaft is provided with an annular notch at the connection with the air inlet hole to ensure the stable communication between the air inlet hole and the air passage during rotation.

3. A rotary joint for transmitting torque according to claim 2 wherein the rotary shaft is provided with sealing rings on both sides of the slot for sealing engagement with the housing.

4. A rotary joint for transmitting torque as claimed in any one of claims 1 to 3, wherein the housing is provided with bearing mounting locations on both sides, the bearing mounting locations are respectively provided with a bearing, the inner ring of the bearing is engaged with the rotary shaft, and the outer ring of the bearing is engaged with the housing.

5. The rotary joint for transmitting torque according to claim 4, wherein the rotary shaft is provided with a snap ring groove adjacent to the bearing, and the snap ring groove is provided with a snap ring for fixing the bearing in the axial direction.

6. The rotary joint for transmitting torque force as claimed in claim 1, wherein a key slot is provided at the other end of the rotary shaft, and the motor is connected with the rotary shaft by the key slot.

7. The rotary joint capable of transmitting torque force according to claim 1, wherein the opening of the air passage channel communicated with the outside is provided with a threaded sealing element.

8. The rotary joint capable of transmitting torque force according to claim 1, wherein the housing is provided with at least two air inlet holes, each air inlet hole is located on a different diameter of the rotating shaft, the rotating shaft is provided with air outlet holes with the same number as the air inlet holes, and the air passage channels are independent from each other.