Fluid-driven joint same-direction connecting mechanism

Abstract

The utility model discloses a fluid-driven joint homodromous connecting mechanism which is characterized in that a single fluid-driven joint comprises a joint sleeve, a joint rotating shaft is arranged in the joint sleeve, two ends of the joint sleeve are sealed through end covers, an inner boss extending to the joint rotating shaft is arranged on the inner side of the joint sleeve, and an outer boss is arranged on one side of the joint rotating shaft. An inner cavity of the joint sleeve is divided into two cavities through the inner boss, the joint rotating shaft and the outer boss, and the two cavities communicate with the outside through a first fluid channel and a second fluid channel correspondingly. Wherein the fluid driving joint B and the fluid driving joint A are fixed through a connecting piece, and the first fluid channel and the second fluid channel of the fluid driving joint A and the fluid driving joint B are connected through a pipeline. The mechanism is simple in structure and small in occupied space; the operation reliability and safety of the joint mechanism are improved; the mechanism is compact in structure, simple in appearance and convenient for daily maintenance; the rotating angle of the mechanism is large, and infinite rotation can be achieved.

Description

Technical Field

[0001] The utility model relates to a fluid-driven joint co-directional connection mechanism, belonging to the technical field of mechanical joints. Background Technique

[0002] Joints are important and indispensable structures in many motion machines. They are the fulcrums for realizing mechanical actions such as swinging, rotating, and telescoping, and are the most widely used connection mechanisms in mechanical actions.

[0003] In the existing joint mechanisms, most of them use cylinders or hydraulic cylinders fixed at the upper and lower ends of the joints. Through the telescoping of the cylinders or hydraulic cylinders, the rotating end of the joint is driven to rotate along a certain fulcrum. In the existing joint mechanisms, the driving components are installed outside the joints, which requires a large structural space. At the same time, the precision structures of the driving components are exposed outside, and they are easily damaged under complex working conditions, resulting in high maintenance costs. Moreover, the rotation angle of the existing fluid-driven joint mechanisms is limited, and the application range is restricted. Summary of the Invention

[0004] The purpose of the utility model is to provide a fluid-driven joint co-directional connection mechanism, so as to solve the problems of the existing joint mechanisms occupying a large space, the precision structures of the driving components being exposed outside, being easily damaged under complex working conditions, having high maintenance costs, having a limited rotation angle, and having a restricted application range.

[0005] The technical solution of the utility model: A fluid-driven joint co-directional connection mechanism includes at least two fluid-driven joints. A single fluid-driven joint includes a joint sleeve. A joint rotating shaft is rotatably arranged along the axial direction inside the joint sleeve. Both ends of the joint sleeve are closed by end covers. An inner convex platform extending to the joint rotating shaft is arranged on the inner side of the joint sleeve. An outer convex platform is arranged on one side of the joint rotating shaft inside the joint sleeve. The inner cavity of the joint sleeve is divided into two cavities by the inner convex platform, the joint rotating shaft, and the outer convex platform. And the two cavities are respectively communicated to the outside through a first fluid channel and a second fluid channel; among them, the fluid-driven joint B and the fluid-driven joint A are fixed to each other through a connecting piece, and the first fluid channels and the second fluid channels of the fluid-driven joint A and the fluid-driven joint B are connected to each other through pipelines.

[0006] In the foregoing fluid-driven joint co-directional connection mechanism, a sliding seal is provided between the outer convex platform and the inner wall of the joint sleeve, and a sliding seal is provided between the inner convex platform and the joint rotating shaft.

[0007] In the foregoing fluid-driven joint co-directional connection mechanism, the outer convex platform and the joint rotating shaft are of an integral structure; or a sleeve is sleeved and fixed on the joint rotating shaft, and the outer convex platform is fixed on the sleeve.

[0008] In the foregoing fluid-driven joint co-directional connection mechanism, the outer convex platform and the sleeve are of an integral structure.

[0009] In the aforementioned fluid-driven joint co-directional connection mechanism, the joint sleeve or joint rotating shaft to which the fluid-driven joint B belongs is fixed to the joint rotating shaft to which the fluid-driven joint A belongs through a connecting member.

[0010] In the aforementioned fluid-driven joint co-directional connection mechanism, the first fluid channel and the second fluid channel to which the fluid-driven joint B belongs are connected in parallel or in series in the same direction through pipelines with the first fluid channel and the second fluid channel to which the fluid-driven joint A belongs.

[0011] Advantages of the present utility model: Compared with the prior art, the present utility model connects two or more fluid-driven joints to each other and interconnects the pipelines, having the following advantages: First, the mechanism has a simple structure and occupies a small space; Second, the driving structure of the mechanism is hidden inside the joint structure, improving the reliability and safety of the operation of the joint mechanism; Third, the mechanism has a compact structure and a simple appearance, facilitating daily maintenance; Fourth, the mechanism has a large rotation angle and can achieve infinite rotation. Description of the Drawings

[0012] Figure 1 is the front view structural schematic diagram of the present utility model;

[0013] Figure 2 is Figure 1 the sectional view structural schematic diagram of

[0014] Note: When two identical fluid-driven joints A and B are connected to each other, in order to facilitate the distinction of the same components of different fluid-driven joints, A and B are specifically attached to the reference numerals of their attached drawings for distinction. For example, 1B represents the joint sleeve 1 of the fluid-driven joint B, and other components are similar.

[0015] Reference numerals: 1 - joint sleeve, 2 - joint rotating shaft, 3 - end cover, 4 - inner convex platform, 5 - outer convex platform, 6 - first fluid channel, 7 - second fluid channel, 8 - sleeve, 9 - connecting member. Detailed Embodiment

[0016] The present utility model will be further described below in conjunction with the drawings and embodiments, but it is not used as a basis for limiting the present utility model.

[0017] Embodiment 1 of the present utility model: This embodiment provides a fluid-driven joint coaxial connection mechanism, which includes two or more fluid-driven joints. A single fluid-driven joint includes a joint sleeve 1. Inside the joint sleeve 1, a joint rotating shaft 2 is rotatably arranged along its axial direction. Both ends of the joint sleeve 1 are closed by end caps 3. Both ends of the joint rotating shaft 2 extend outside the end caps 3. An inner boss 4 extending to the joint rotating shaft 2 is arranged on the inner side of the joint sleeve 1. There is an outer boss 5 on one side of the joint rotating shaft 2 located inside the joint sleeve 1. The inner cavity of the joint sleeve 1 is divided into two cavities, namely a left cavity and a right cavity, by the inner boss 4, the joint rotating shaft 2, and the outer boss 5. And the two cavities are respectively connected to the outside through a first fluid channel 6 and a second fluid channel 7. The fluid-driven joint B and the fluid-driven joint A are fixed to each other through a connecting member 9. The first fluid channel 6 and the second fluid channel 7 of the fluid-driven joint B are connected to the first fluid channel 6 and the second fluid channel 7 of the fluid-driven joint A through pipelines.

[0018] The specific usage method is as follows:

[0019] Connect the first fluid channel 6 of the fluid-driven joint A to the first fluid channel 6 of the fluid-driven joint B and connect it to the fluid input end. Connect the second fluid channel 7 of the fluid-driven joint A to the second fluid channel 7 of the fluid-driven joint B and connect it to the fluid output end.

[0020] The fluid enters the left cavities of two or more fluid-driven joints simultaneously through the first fluid channel 6, causing the volume of the left cavities to expand, pushing the outer boss 5 of the fluid-driven joint to rotate, compressing the space of the right cavity of the fluid-driven joint, and discharging the fluid in the right cavity through the second fluid channel 7 simultaneously. The fluid-driven joint B rotates with the joint rotating shaft 2 of the fluid-driven joint A, and the joint rotating shafts 2 of the fluid-driven joint B rotate in the same direction simultaneously. Conversely, control the fluid to enter the right cavities of two or two fluid-driven joints simultaneously through the second fluid channel 7, causing the volume of the right cavities to expand, pushing the outer boss 5 of the fluid-driven joint to rotate, compressing the space of the left cavity of the fluid-driven joint, and discharging the fluid in the left cavity through the first fluid channel 6 simultaneously. The fluid-driven joint B rotates in the opposite direction with the joint rotating shaft 2 of the fluid-driven joint A, and the joint rotating shafts 2 of the fluid-driven joint B rotate in the opposite direction simultaneously.

[0021] A docking structure is provided on the outer sides of the joint sleeve 1 and the joint rotating shaft 2. The docking structure of the joint sleeve 1 of the fluid-driven joint A is used to connect with the upper joint arm, and the docking structure of the joint sleeve 1 of the fluid-driven joint B is used to connect with the fluid-driven joint A. Then, one end or both ends of the docking structure of the joint rotating shaft 2 of the fluid-driven joint B are fixedly connected to the lower joint arm. Either side of the upper joint arm and the lower joint arm can be selected as the moving end, and the other side as the fixed end, so that the moving end rotates around the fixed end with the joint center as the fulcrum. When the upper joint arm is fixed, the joint sleeve 1 is fixed. The fluid enters the left cavity through the first fluid channel 6, causing the volume of the left cavity to expand, pushing the outer convex platform 5 of the fluid-driven joint A to rotate to the right. The joint rotating shaft 2 of the fluid-driven joint A drives the fluid-driven joint B to rotate clockwise, and the joint rotating shaft 2 of the fluid-driven joint B also rotates clockwise at the same time. When reverse rotation is required, the fluid enters the right cavity through the second fluid channel 7, causing the volume of the right cavity to expand, pushing the outer convex platform 5 of the fluid-driven joint A to rotate to the left. The joint rotating shaft 2 drives the fluid-driven joint B to rotate counterclockwise, and the joint rotating shaft 2 of the fluid-driven joint B also rotates counterclockwise at the same time.

[0022] Embodiment 2 of the present invention: The difference between this embodiment and Embodiment 1 is that the first fluid channel 6 of the fluid-driven joint A is connected to the fluid input end, the first fluid channel 6 of the fluid-driven joint B is connected to the second fluid channel 7 of the fluid-driven joint A, and the second fluid channel 7 of the fluid-driven joint B is connected to the fluid output end. Control the fluid to enter the left cavity of the fluid-driven joint A through the first fluid channel 6 of the fluid-driven joint A, causing the volume of the left cavity to expand, pushing the outer convex platform 5 of the fluid-driven joint A to rotate to the right. The space of the right cavity of the fluid-driven joint A is compressed, and the fluid in the cavity flows through the second fluid channel 7 of the fluid-driven joint A to the first fluid channel 6 of the fluid-driven joint B and enters the left cavity of the fluid-driven joint B. The joint rotating shaft 2 of the fluid-driven joint A drives the fluid-driven joint B to rotate to the right, and at the same time, the joint rotating shaft 2 of the fluid-driven joint B rotates to the right along with the outer convex platform 5. On the contrary, control the fluid to enter the right cavity of the fluid-driven joint B through the second fluid channel 7 of the fluid-driven joint B, causing the volume of the right cavity to expand, pushing the outer convex platform 5 of the fluid-driven joint B to rotate to the left. The space of the left cavity of the fluid-driven joint B is compressed, and the fluid in the cavity flows through the first fluid channel 6 of the fluid-driven joint B to the second fluid channel 7 of the fluid-driven joint A, causing the volume of the right cavity of the fluid-driven joint A to expand. The joint rotating shaft 2 of the fluid-driven joint B rotates to the left along with the outer convex platform 5, and at the same time, the joint rotating shaft 2 of the fluid-driven joint A drives the fluid-driven joint B to rotate to the left.

[0023] In the structure of the above-described embodiment, a sliding seal is provided between the outer convex platform 5 and the inner wall of the joint sleeve 1, and a sliding seal is provided between the inner convex platform 4 and the joint rotating shaft 2. During the rotation of the outer convex platform 5 and the joint rotating shaft 2, it is avoided that fluid enters the adjacent cavities from the gaps between the outer convex platform 5 and the inner wall of the joint sleeve 1 and between the joint rotating shaft 2 and the inner convex platform 4.

[0024] An outer convex platform 5 is provided on the joint rotating shaft 2, and the outer convex platform 5 and the joint rotating shaft 2 are of an integral structure; or a sleeve 8 is sleeved and fixed on the joint rotating shaft 2, and the outer convex platform 5 is fixed on the sleeve 8. The outer convex platform 5 and the sleeve 8 can be of a split structure or can be designed as an integral structure. A variety of connection structure forms can be arbitrarily selected.

[0025] The joint sleeve 1 or the joint rotating shaft 2 to which the fluid-driven joint B belongs is fixed to the joint rotating shaft 2 to which the fluid-driven joint A belongs through a connecting member 9.

[0026] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A fluid-driven joint same-direction connection mechanism, characterized in that: The invention comprises at least two fluid-driven joints, wherein a single fluid-driven joint comprises a joint sleeve (1), wherein a joint shaft (2) is arranged inside the joint sleeve (1) for rotation along its axial direction, wherein both ends of the joint sleeve (1) are closed by end covers (3), wherein an inner boss (4) extending to the joint shaft (2) is arranged on the inner side of the joint sleeve (1), and an outer boss (5) is arranged on one side of the joint shaft (2) inside the joint sleeve (1), wherein the inner cavity of the joint sleeve (1) is divided into two cavities by the inner boss (4), the joint shaft (2) and the outer boss (5), and the two cavities are connected to the outside through a first fluid channel (6) and a second fluid channel (7) respectively; wherein the fluid-driven joint B and the fluid-driven joint A are fixed to each other by a connecting piece (9), and the first fluid channel (6) and the second fluid channel (7) of the fluid-driven joint A and the fluid-driven joint B are connected to each other by a pipeline.

2. A fluid-driven joint same-direction connection mechanism according to claim 1, characterized in that: A sliding seal is formed between the outer boss (5) and the inner wall of the joint sleeve (1), and a sliding seal is formed between the inner boss (4) and the joint shaft (2).

3. A fluid-driven joint same-direction connection mechanism according to claim 1, characterized in that: The outer boss (5) and the joint shaft (2) are an integrated structure; or a sleeve (8) is sleeved and fixed on the joint shaft (2), and the outer boss (5) is fixed on the sleeve (8).

4. A fluid-driven joint same-direction connection mechanism according to claim 3, characterized in that: The outer boss (5) and the sleeve (8) are an integrated structure.

5. The fluid-driven joint same-direction connection mechanism according to claim 1, characterized in that: The joint sleeve (1) or the joint shaft (2) belonging to the fluid-driven joint B is fixed to the joint shaft (2) belonging to the fluid-driven joint A via a connecting piece (9).

6. A fluid-driven joint same-direction connection mechanism according to claim 1, characterized in that: The first fluid channel (6) and the second fluid channel (7) belonging to the fluid-driven joint B are connected in parallel or in series with the first fluid channel (6) and the second fluid channel (7) belonging to the fluid-driven joint A through pipelines in the same direction.

Images