High-frequency rotary joint

Abstract

The utility model relates to the technical field of mechanical joints and discloses a high-frequency rotary joint which comprises a first connecting rod, the bottom of the first connecting rod is fixedly connected with a first connecting block, the top of the first connecting block is fixedly connected with a first supporting ring, and the top of the first supporting ring is fixedly provided with an oil injection assembly. The bottom of the first supporting ring is fixedly connected with a first bearing ring. According to the high-frequency rotary joint, when the high-frequency rotary joint enters the joint connecting position of equipment through the oil injection pipe and the equipment runs, oil injection operation on the joint can be completed, when a first supporting ring drives a second gear to be away from a third gear, the second gear and the third gear are disengaged, and an arranged spring drives a fixing plate to reset; the sealing plate and the sealing rubber plate are driven to reset, closing of an inner cavity of the oil tank is completed, small-amount oil injection is conducted on the joint connecting position in batches, oil waste caused by large-amount oil injection is avoided, and energy is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical joints, in particular to a high-frequency rotary joint. Background Art

[0002] A joint is a form of indirect connection. Mechanical joints involve mechanical engineering, including translational joints and rotary joints. Different from translational joints, for example, revolute pairs, cylindrical pairs, and spherical pairs can all be classified as rotary joints.

[0003] The patent with the publication number CN218220306U discloses a rotary joint module, including a rotary joint module output end, a rotary joint module motor end, and a rotary joint module position detection end. The rotary joint module of the utility model has strong external force perception ability, high control feedback accuracy, high electromagnetic shielding, and a compact structure. It is a high-performance force-controlled robotic arm rotary joint; the positions of the encoder, torque sensor, and communication line of the rotary joint are all protected by electromagnetic shielding, and it can be better applied to harsh electromagnetic environments. The rotary joint module is designed with a torque sensor for precise force feedback. The rotary joint module is designed with a harmonic reducer, which mainly consists of a flexspline, a circular spline, a wave generator, and crossed roller bearings. The harmonic reducer is mainly used to increase the output torque of the module.

[0004] However, due to the above-mentioned rotary joint, the oil injection operation at the rotary part of the joint cannot be completed during use. When the joint rotates at a high frequency, the internal oil loss is relatively fast, which easily leads to insufficient lubrication at the joint connection. When the joint rotates, the wear is relatively large. For this reason, we propose a high-frequency rotary joint to solve the above problems. Summary of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a high-frequency rotary joint, which solves the problems that the rotary joint cannot complete the oil injection operation at the rotary part of the joint during use, the internal oil loss is relatively fast when the joint rotates at a high frequency, it is easy to cause insufficient lubrication at the joint connection, and the wear is relatively large when the joint rotates.

[0006] To achieve the above object, the utility model is realized by the following technical solutions: A high-frequency rotary joint, including a first connecting rod, the bottom of the first connecting rod is fixedly connected with a first connecting block, the top of the first connecting block is fixedly connected with a first support ring, a fuel injection assembly is fixedly arranged on the top of the first support ring, the bottom of the first support ring is fixedly connected with a first bearing ring, the surface of the first bearing ring is movably sleeved with a second bearing ring through a bearing, the bottom of the second bearing ring is fixedly connected with a second support ring, and the top of the second support ring is fixedly connected with a second connecting block;

[0007] The oil injection assembly includes a first rotating rod. A fuel injection pipe is fixedly arranged in the inner cavity of the first connecting block. A first gear is fixedly sleeved on the surface of the first rotating rod. The inner cavity of the first support ring is movably connected with a second rotating rod through a bearing. A second gear is fixedly sleeved on the surface of the second rotating rod. A connecting plate is fixedly connected to the bottom of the second support ring. A fixing rod is fixedly connected in the inner cavity of the connecting plate. A third gear is fixedly sleeved on the surface of the fixing rod. A fixing plate is fixedly sleeved on the top of the surface of the first rotating rod. A sealing plate is fixedly connected to the bottom of the fixing plate. The first gear meshes with the second gear, and the second gear meshes with the third gear.

[0008] Preferably, a second connecting rod is fixedly connected to the bottom of the second connecting block. The surface of the second connecting rod is fixedly connected to the inner cavity of the second support ring. The inner cavity of the first support ring is fixedly connected to the inner cavity of the first connecting rod.

[0009] Preferably, an installation groove is formed at the bottom of the first connecting block. A ball is movably arranged in the inner cavity of the installation groove through a bearing. The bottom of the surface of the ball is slidably connected to the inner cavity of the second connecting block.

[0010] Preferably, the top of the fuel injection pipe penetrates through the top of the first support ring. The surface of the first rotating rod is movably connected to the inner cavity of the first support ring through a bearing.

[0011] Preferably, a support frame is fixedly connected to the top of the first support ring. An oil tank is fixedly installed in the inner cavity of the support frame. The inner cavity of the oil tank is movably connected to the surface of the first rotating rod through a bearing. Springs are fixedly arranged on both the front and rear sides of the inner cavity of the oil tank. One end of the inner side of the spring is fixedly connected to the outer surface of the fixing plate. A sealing rubber plate is fixedly connected to the bottom of the sealing plate. The inner cavity of the fuel injection pipe is communicated with the inner cavity of the oil tank.

[0012] Preferably, a cover plate is fixedly connected to the top of the oil tank. The bottom of the inner cavity of the oil tank abuts against the bottom of the sealing rubber plate.

[0013] Preferably, a second connecting rod is fixedly connected to the bottom of the second support ring.

[0014] Advantageous Effects

[0015] The present utility model provides a high-frequency rotary joint. Compared with the prior art, the following advantageous effects are achieved:

[0016] The high-frequency rotary joint, through the arranged second rotating rod, enables the second gear to rotate in place, drives the first gear to rotate, enables the first gear to drive the first rotating rod to rotate, enables the first rotating rod to drive the fixing plate to rotate, enables the sealing plate to drive the sealing rubber plate to move, enables the oil tank to communicate with the injection oil pipe, enables the oil in the oil tank to be injected into the injection oil pipe, and the oil enters the joint connection of the equipment through the injection oil pipe. When the equipment operates, the oil injection operation for the joint can be completed. When the first support ring drives the second gear away from the third gear, at this time, the second gear and the third gear are disengaged from meshing, and the spring drives the fixing plate to reset, drives the sealing plate and the sealing rubber plate to reset, completes the closing of the inner cavity of the oil tank, and injects oil into the joint connection in batches in small amounts, avoiding waste of oil caused by a large amount of oil injection and saving energy. Description of the Drawings

[0017] Figure 1 It is the front view of the overall structure of the present utility model;

[0018] Figure 2 For the present utility model Figure 1 Partial structure front view;

[0019] Figure 3 It is the plan view of the joint connection structure of the present utility model;

[0020] Figure 4 It is the front view of the joint connection structure of the present utility model;

[0021] Figure 5 It is the front view of the oil injection component structure of the present utility model.

[0022] In the figure: 1. First connecting rod; 2. First support ring; 3. Second bearing ring; 4. Second connecting rod; 5. Second support ring; 6. Oil injection component; 7. First bearing ring; 8. Support frame; 9. Oil tank; 10. Cover plate; 11. Connecting plate; 12. Fixed rod; 13. Second connecting block; 14. First connecting block; 15. Installation groove; 16. Ball; 17. Injection oil pipe; 601. Third gear; 602. Second gear; 603. Second rotating rod; 604. First gear; 605. First rotating rod; 606. Sealing rubber plate; 607. Sealing plate; 608. Fixing plate; 609. Spring. Detailed Implementation Manner

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1 - 5 , the present utility model provides a technical solution, which specifically includes the following embodiments:

[0025] Embodiment 1:

[0026] A high-frequency rotary joint includes a first connecting rod 1. A first connecting block 14 is fixedly connected to the bottom of the first connecting rod 1. A first support ring 2 is fixedly connected to the top of the first connecting block 14. An oil injection assembly 6 is fixedly provided on the top of the first support ring 2. A first bearing ring 7 is fixedly connected to the bottom of the first support ring 2. A second bearing ring 3 is movably sleeved on the surface of the first bearing ring 7 through a bearing. A second support ring 5 is fixedly connected to the bottom of the second bearing ring 3. A second connecting block 13 is fixedly connected to the top of the second support ring 5;

[0027] The oil injection assembly 6 includes a first rotating rod 605. An oil injection pipe 17 is fixedly provided in the inner cavity of the first connecting block 14. A first gear 604 is fixedly sleeved on the surface of the first rotating rod 605. A second rotating rod 603 is movably connected to the inner cavity of the first support ring 2 through a bearing. A second gear 602 is fixedly sleeved on the surface of the second rotating rod 603. A connecting plate 11 is fixedly connected to the bottom of the second support ring 5. A fixing rod 12 is fixedly connected to the inner cavity of the connecting plate 11. A third gear 601 is fixedly sleeved on the surface of the fixing rod 12. A fixing plate 608 is fixedly sleeved on the top surface of the first rotating rod 605. A sealing plate 607 is fixedly connected to the bottom of the fixing plate 608. The first gear 604 meshes with the second gear 602, and the second gear 602 meshes with the third gear 601;

[0028] Through the mutual cooperation of the provided first bearing ring 7, second bearing ring 3, first connecting block 14, second connecting block 13 and ball 16, the first connecting rod 1 can rotate. When the first connecting rod 1 rotates, the connecting plate 11, fixed rod 12 and third gear 601 remain stationary. When the first connecting rod 1 drives the first support ring 2 to rotate to the position of the third gear 601, the third gear 601 drives the engaged second gear 602 to rotate. Through the provided second rotating rod 603, the second gear 602 rotates in place, driving the first gear 604 to rotate, causing the first gear 604 to drive the first rotating rod 605 to rotate, enabling the first rotating rod 605 to drive the fixing plate 608 to rotate, making the sealing plate 607 drive the sealing rubber plate 606 to move, connecting the oil tank 9 with the injection oil pipe 17, allowing the oil in the oil tank 9 to be injected into the injection oil pipe 17. The oil enters the joint connection of the device through the injection oil pipe 17. When the device is operating, the oil injection operation for the joint can be completed. When the first support ring 2 drives the second gear 602 away from the third gear 601, at this time, the second gear 602 and the third gear 601 are disengaged. The spring 609 drives the fixing plate 608 to reset, driving the sealing plate 607 and the sealing rubber plate 606 to reset, completing the closing of the inner cavity of the oil tank 9, injecting oil into the joint connection in batches and in small amounts, avoiding waste of oil caused by large amounts of oil injection, and saving energy.

[0029] The bottom of the second connecting block 13 is fixedly connected with a second connecting rod 4, and the surface of the second connecting rod 4 is fixedly connected with the inner cavity of the second support ring 5. The inner cavity of the first support ring 2 is fixedly connected with the inner cavity of the first connecting rod 1;

[0030] Through the provided first support ring 2, when the first connecting rod 1 rotates, it can drive the first support ring 2 to rotate synchronously, facilitating the normal use of the device.

[0031] An installation groove 15 is opened at the bottom of the first connecting block 14. A ball 16 is movably arranged in the inner cavity of the installation groove 15 through a bearing, and the bottom of the surface of the ball 16 is slidably connected with the inner cavity of the second connecting block 13;

[0032] Through the mutual cooperation of the first connecting block 14, second connecting block 13 and ball 16, the first connecting rod 1 can rotate.

[0033] The top of the injection oil pipe 17 penetrates through the top of the first support ring 2, and the surface of the first rotating rod 605 is movably connected with the inner cavity of the first support ring 2 through a bearing.

[0034] A support frame 8 is fixedly connected to the top of the first support ring 2. An oil tank 9 is fixedly installed in the inner cavity of the support frame 8. The inner cavity of the oil tank 9 is movably connected to the surface of the first rotating rod 605 through a bearing. Springs 609 are fixedly provided on both the front and rear sides of the inner cavity of the oil tank 9. One end of the inner side of the spring 609 is fixedly connected to the outer surface of the fixed plate 608. A sealing rubber plate 606 is fixedly connected to the bottom of the sealing plate 607. The inner cavity of the oil injection pipe 17 is communicated with the inner cavity of the oil tank 9;

[0035] By setting the spring 609 to drive the fixed plate 608 to reset, driving the sealing plate 607 and the sealing rubber plate 606 to reset, the closing of the inner cavity of the oil tank 9 is completed, and the joint connection is filled with oil in batches in small amounts.

[0036] A cover plate 10 is fixedly connected to the top of the oil tank 9. The bottom of the inner cavity of the oil tank 9 abuts against the bottom of the sealing rubber plate 606;

[0037] By setting the sealing rubber plate 606, it is avoided that oil leaks during the rotation of the joint.

[0038] A second connecting rod 4 is fixedly connected to the bottom of the second support ring 5.

[0039] At the same time, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0040] During operation, through the mutual cooperation of the first bearing ring 7, the second bearing ring 3, the first connecting block 14, the second connecting block 13 and the rolling balls 16, the first connecting rod 1 can rotate. When the first connecting rod 1 rotates, the connecting plate 11, the fixed rod 12 and the third gear 601 remain stationary. When the first connecting rod 1 drives the first support ring 2 to rotate to the position of the third gear 601, the third gear 601 drives the meshing second gear 602 to rotate. Through the set second rotating rod 603, the second gear 602 rotates in place, driving the first gear 604 to rotate, so that the first gear 604 drives the first rotating rod 605 to rotate, so that the first rotating rod 605 drives the fixed plate 608 to rotate, so that the sealing plate 607 drives the sealing rubber plate 606 to move, so that the oil tank 9 is communicated with the oil injection pipe 17, so that the oil in the oil tank 9 is injected into the oil injection pipe 17. The oil enters the joint connection of the equipment through the oil injection pipe 17. When the equipment operates, the oil injection operation of the joint can be completed. When the first support ring 2 drives the second gear 602 away from the third gear 601, at this time, the second gear 602 and the third gear 601 are disengaged from meshing. By setting the spring 609 to drive the fixed plate 608 to reset, driving the sealing plate 607 and the sealing rubber plate 606 to reset, the closing of the inner cavity of the oil tank 9 is completed, and the joint connection is filled with oil in batches in small amounts, avoiding waste of oil caused by a large amount of oil injection and saving energy.

Claims

1. A high-frequency rotary joint, comprising a first connecting rod (1), characterized in that: The bottom of the first connecting rod (1) is fixedly connected with a first connecting block (14). The top of the first connecting block (14) is fixedly connected with a first support ring (2). The top of the first support ring (2) is fixedly provided with an oil injection assembly (6). The bottom of the first support ring (2) is fixedly connected with a first bearing ring (7). The surface of the first bearing ring (7) is movably sleeved with a second bearing ring (3) through a bearing. The bottom of the second bearing ring (3) is fixedly connected with a second support ring (5). The top of the second support ring (5) is fixedly connected with a second connecting block (13). The oil injection assembly (6) includes a first rotating rod (605). An oil injection pipe (17) is fixedly arranged in the inner cavity of the first connecting block (14). A first gear (604) is fixedly sleeved on the surface of the first rotating rod (605). A second rotating rod (603) is movably connected to the inner cavity of the first support ring (2) through a bearing. A second gear (602) is fixedly sleeved on the surface of the second rotating rod (603). The bottom of the second support ring (5) is fixedly connected with a connecting plate (11). A fixing rod (12) is fixedly connected to the inner cavity of the connecting plate (11). A third gear (601) is fixedly sleeved on the surface of the fixing rod (12). A fixing plate (608) is fixedly sleeved on the top surface of the first rotating rod (605). A sealing plate (607) is fixedly connected to the bottom of the fixing plate (608). The first gear (604) meshes with the second gear (602), and the second gear (602) meshes with the third gear (601).

2. The high-frequency rotary joint according to claim 1, wherein: The bottom of the second connecting block (13) is fixedly connected with a second connecting rod (4). The surface of the second connecting rod (4) is fixedly connected to the inner cavity of the second support ring (5). The inner cavity of the first support ring (2) is fixedly connected to the inner cavity of the first connecting rod (1).

3. The high-frequency rotary joint according to claim 1, wherein: An installation groove (15) is formed in the bottom of the first connecting block (14). A ball (16) is movably arranged in the inner cavity of the installation groove (15) through a bearing. The bottom surface of the ball (16) is slidably connected to the inner cavity of the second connecting block (13).

4. A high-frequency rotary joint according to claim 1, characterized in that: The top of the oil injection pipe (17) penetrates through the top of the first support ring (2). The surface of the first rotating rod (605) is movably connected to the inner cavity of the first support ring (2) through a bearing.

5. A high-frequency rotary joint according to claim 1, characterized in that: The top of the first support ring (2) is fixedly connected with a support frame (8). An oil tank (9) is fixedly installed in the inner cavity of the support frame (8). The inner cavity of the oil tank (9) is movably connected to the surface of the first rotating rod (605) through a bearing. Springs (609) are fixedly arranged on both the front and rear sides of the inner cavity of the oil tank (9). One end of the inner side of the spring (609) is fixedly connected to the outer surface of the fixing plate (608). A sealing rubber plate (606) is fixedly connected to the bottom of the sealing plate (607). The inner cavity of the oil injection pipe (17) is communicated with the inner cavity of the oil tank (9).

6. The high-frequency rotary joint according to claim 5, wherein: The top of the oil tank (9) is fixedly connected with a cover plate (10). The bottom of the inner cavity of the oil tank (9) abuts against the bottom of the sealing rubber plate (606).

7. The high-frequency rotary joint according to claim 5, characterized in that: The bottom of the second support ring (5) is fixedly connected with a second connecting rod (4).

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