Hydraulically-driven rotary sealing joint

Abstract

The utility model relates to the technical field of hydraulic joints, and discloses a hydraulically-driven rotary sealing joint which comprises a joint end, a joint body is fixedly connected to the rear side of the outer wall of the joint end, a first supporting block is fixedly connected to the outer wall of the joint body, and a bearing ball is slidably connected to the upper portion of the first supporting block. The outer wall of the bearing ball is slidably connected with a second supporting block, the outer wall of the second supporting block is fixedly connected with a shell, the outer wall of the shell is fixedly connected with a first protective cover, a second protective cover is arranged below the first protective cover, the first protective cover is in an n shape, the second protective cover is in a 7 shape, and the second protective cover is embedded into the first protective cover. According to the utility model, the two sides of the shell are provided with the first protective covers, the first protective covers are n-shaped, the second protective covers are 7-shaped, and the second protective covers are fixed on the surface, so that the effect of preventing dust from entering and damaging the internal structure is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic joints, in particular to a hydraulically driven rotary sealing joint. Background Art

[0002] The hydraulic rotary joint is a rotary joint specially used for low-speed, high-pressure, multi-media, and multi-channel equipment. It serves equipment such as machining center rotary tables, hydraulic workstations, coilers, converters, large-bale rotary tables, hydraulic machinery, and multi-channel high-pressure controllers. The hydraulic rotary joint can choose the connection method according to the working situation. It has independent pipelines inside and can be selected according to different working conditions to maximize the benefits. There are two precision bearings inside the rotary joint, which runs smoothly, reliably, firmly, flexibly, and has a small friction coefficient, so it can run at high speed.

[0003] Traditional hydraulic rotary joints have tiny gaps at the front and rear bearings, which may allow fine dust to enter and damage the internal structure. Traditional oil circuit sealing structures do not have a large enough contact area, so oil cross-flow may occur, affecting subsequent work.

[0004] For the above hydraulic rotary joint, dust may enter and damage the internal structure. For this reason, we propose a hydraulically driven rotary sealing joint. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a hydraulically driven rotary sealing joint, which aims to improve the problem of dust entering and thus damaging the internal structure.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hydraulically driven rotary sealing joint, comprising a joint end, the outer wall of the joint end is fixedly connected to a joint body at the rear side, the outer wall of the joint body is fixedly connected to a first support block, the upper part of the first support block is slidably connected to a bearing ball, the outer wall of the bearing ball is slidably connected to a second support block, the outer wall of the second support block is fixedly connected to a shell, the outer wall of the shell is fixedly connected to a first shield, a second shield is arranged below the first shield, the first shield is in the shape of "n", the second shield is in the shape of "7", and the second shield is embedded in the first shield, the bottom of the second shield is fixedly connected to the outer wall of the joint body, the outer wall of the joint body is fixedly connected to an isolation block at the middle position, a sealing gasket is arranged on the top of the isolation block, and the sealing gasket is in the shape of "herringbone", the outer wall of the shell is fixedly connected to a valve body, the middle part of the valve body is fixedly connected to a mounting pipe, the outer wall of the joint body is provided with a second connecting pipe, and the middle part of the joint body is provided with a first connecting pipe.

[0007] Preferably, an annular oil circuit is provided between the isolation blocks at a position perpendicular to the second connecting pipe.

[0008] Preferably, the mounting pipe passes through the housing and is perpendicular to the annular oil circuit.

[0009] Preferably, the first communication pipe is connected to the output pipe.

[0010] Preferably, an output pipe is provided in the middle of the connector end.

[0011] Preferably, the side wall of the isolation block is provided with an arc chamfer.

[0012] Preferably, three valve bodies are provided on the outer wall of the shell and are in a staggered relationship.

[0013] Preferably, a second support block and a first shield are provided at the front and rear of the shell.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, a first shield is provided on both sides of the shell, the first shield is in the shape of an "n", a second shield is provided at the lower part of the first shield, the second shield is in the shape of a "7", the second shield is fixed to the surface of the joint body, the second shield wraps the second support block so that dust is not easy to enter, and at the same time, the second shield is engaged with the first shield so that dust is more difficult to enter, and at the same time, it does not affect the rotation of the joint body, thereby improving the effect of dust entering and damaging the internal structure.

[0016] 2. In the utility model, an isolation block is provided on the outer wall of the joint body, and an annular oil path is formed between the isolation blocks. The oil will pass through the annular oil path. A "human" shaped sealing gasket is provided on the upper part of the isolation block to make the sealing gasket more wrapped. The corners of the isolation block are rounded to make the isolation block fit the sealing gasket better, thereby improving the airtightness, thereby improving the problem of oil cross-flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A plan view of a hydraulically driven rotary sealing joint proposed by the utility model;

[0018] Figure 2 A three-dimensional diagram of a hydraulically driven rotary sealing joint proposed by the utility model;

[0019] Figure 3 This is a cross-sectional view of a hydraulically driven rotary sealing joint proposed by the utility model.

[0020] Legend:

[0021] 1. Connector end; 2. Output pipe; 3. Shell; 4. First protective cover; 5. Second protective cover; 6. First support block; 7. Bearing ball; 8. Second support block; 9. Valve body; 10. Mounting pipe; 11. Sealing gasket; 12. Isolation block; 13. Annular oil circuit; 14. First connecting pipe; 15. Second connecting pipe; 16. Connector body. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings of the specification of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Reference Figure 1-Figure 3The utility model provides an embodiment: a hydraulically driven rotary sealing joint, comprising a joint end 1, the joint end 1 serves to connect the external structure, the outer wall of the joint end 1 is fixedly connected to a joint body 16 at the rear side, the joint body 16 serves to transmit the rotational force, the outer wall of the joint body 16 is fixedly connected to a first support block 6, the first support block 6 serves to support the bearing ball 7, the upper part of the first support block 6 is slidably connected to the bearing ball 7, the bearing ball 7 enables the joint body 16 to rotate smoothly, and the outer wall of the bearing ball 7 is slidably connected There is a second support block 8, and the second support block 8 cooperates with the first support block 6 to clamp the bearing ball 7. The outer wall of the second support block 8 is fixedly connected to the shell 3, and the shell 3 plays the role of installing the upper structure. The outer wall of the shell 3 is fixedly connected to the first shield 4, and the first shield 4 plays the role of preventing dust from entering. A second shield 5 is arranged below the first shield 4, and the second shield 5 also plays the role of preventing dust from entering. The first shield 4 is in the shape of "n", and the second shield 5 is in the shape of "7", and the second shield 5 is embedded in the inside of the first shield 4, and the "n" shape and " The "7" shape can make the first shield 4 and the second shield 5 fit more tightly, and at the same time does not affect the rotation of the joint body 16. The bottom of the second shield 5 is fixedly connected to the outer wall of the joint body 16. The outer wall of the joint body 16 is fixedly connected with an isolation block 12 at the middle position. The isolation block 12 plays a role in isolating different oils. A sealing gasket 11 is arranged on the top of the isolation block 12. The sealing gasket 11 plays a role in sealing the oil, so that the oil is not easy to seep out. The sealing gasket 11 is a "herringbone shape". The "herringbone shape" makes the sealing area of ​​the sealing gasket 11 larger. In order to improve the sealing performance, the outer wall of the shell 3 is fixedly connected to the valve body 9, and the valve body 9 plays the role of a switch mounting tube 10. The middle part of the valve body 9 is fixedly connected to the mounting tube 10, and the mounting tube 10 plays the role of installing and connecting the external oil pipe. The outer wall of the joint body 16 is provided with a second connecting tube 15, and the second connecting tube 15 plays the role of connecting the mounting tube 10 and the first connecting tube 14. The middle part of the joint body 16 is provided with a first connecting tube 14, and the first connecting tube 14 plays the role of conveying oil. Multiple first connecting tubes 14 can be arranged inside the joint body 16.

[0024] An annular oil circuit 13 is provided between the isolation blocks 12 at a position perpendicular to the second connecting pipe 15 . The annular oil circuit 13 enables the joint body 16 to still transport oil when rotating. A plurality of annular oil circuits 13 can be provided inside the joint body 16 .

[0025] The mounting tube 10 passes through the housing 3 and is perpendicular to the annular oil passage 13 , so that each mounting tube 10 can correspond to one annular oil passage 13 .

[0026] The first connecting pipe 14 is connected to the output pipe 2, so that the first connecting pipe 14 can transport oil to the inside of the output pipe 2, and multiple first connecting pipes 14 can be connected to multiple output pipes 2 to transport different oils.

[0027] An output pipe 2 is provided in the middle of the joint end 1 , and oil can be transported through the output pipe 2 after the joint end 1 is connected to an external structure.

[0028] The side wall of the isolation block 12 is provided with an arc chamfer, so that the isolation block 12 can fit the sealing gasket 11 more closely.

[0029] The outer wall of the housing 3 is provided with three valve bodies 9 in a staggered relationship. The three valve bodies 9 can be installed with three mounting pipes 10 to transport three types of oil. The mutual staggered relationship can prevent the external oil pipelines from colliding.

[0030] The second support block 8 and the first shield 4 are arranged at the front and rear of the shell 3, so that the shell 3 and the joint body 16 can rotate with bearings at the front and rear, so that the joint body 16 has a higher rotation speed, and both are dust-proof protected.

[0031] Working principle: connect the external oil pipe through the installation pipe 10, open the valve body 9 to start conveying oil, the oil enters the annular oil path 13 separated by the isolation block 12 through the installation pipe 10, and forms a tightness through the sealing gasket 11 so that the oil will not flow through, and the oil then reaches the inside of the second connecting pipe 15, and then reaches the first connecting pipe 14 and is finally conveyed out from the output pipe 2, and the external rotating structure is started to drive the joint body 16 to rotate. The first support block 6, the bearing ball 7 and the second support block 8 arranged at the front and rear make the joint body 16 have a higher rotation speed, thereby improving the working efficiency. The second shield 5 fixed on the upper surface of the joint body 16 and the first shield 4 fixed on the outer surface of the shell 3 fit each other, thereby preventing dust from entering the inside of the joint body 16 from the bearing ball 7.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hydraulically driven rotary sealing joint, comprising a joint end (1), characterized in that The outer wall of the joint end (1) is fixedly connected to a joint body (16) at the rear side, the outer wall of the joint body (16) is fixedly connected to a first support block (6), the upper part of the first support block (6) is slidably connected to a bearing ball (7), the outer wall of the bearing ball (7) is slidably connected to a second support block (8), the outer wall of the second support block (8) is fixedly connected to a shell (3), the outer wall of the shell (3) is fixedly connected to a first protective cover (4), a second protective cover (5) is arranged below the first protective cover (4), the first protective cover (4) is in the shape of an "n", the second protective cover (5) is in the shape of a "7", and the second protective cover (5) is in the shape of a "7". The cover (5) is embedded in the interior of the first protective cover (4); the bottom of the second protective cover (5) is fixedly connected to the outer wall of the joint body (16); an isolation block (12) is fixedly connected to the middle of the outer wall of the joint body (16); a sealing gasket (11) is arranged on the top of the isolation block (12); the sealing gasket (11) is in a "herringbone" shape; the outer wall of the shell (3) is fixedly connected to the valve body (9); the middle of the valve body (9) is fixedly connected to the mounting pipe (10); the outer wall of the joint body (16) is provided with a second connecting pipe (15); and the middle of the joint body (16) is provided with a first connecting pipe (14).

2. A hydraulically driven rotary sealing joint according to claim 1, characterized in that An annular oil passage (13) is provided between the isolation blocks (12) at a position perpendicular to the second connecting pipe (15).

3. A hydraulically driven rotary sealing joint according to claim 1, characterized in that The mounting pipe (10) passes through the housing (3) and is perpendicular to the annular oil passage (13).

4. A hydraulically driven rotary sealing joint according to claim 1, characterized in that The first connecting pipe (14) is connected to the output pipe (2).

5. A hydraulically driven rotary sealing joint according to claim 1, characterized in that An output pipe (2) is provided in the middle of the joint end (1).

6. A hydraulically driven rotary sealing joint according to claim 1, characterized in that The side wall of the isolation block (12) is provided with an arc chamfer.

7. A hydraulically driven rotary sealing joint according to claim 1, characterized in that The outer wall of the shell (3) is provided with three valve bodies (9) in a staggered relationship.

8. A hydraulically driven rotary sealing joint according to claim 1, characterized in that A second support block (8) and a first shield (4) are provided at the front and rear of the shell (3).

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