Hydraulic rotary sealing joint

Abstract

The utility model discloses a hydraulic rotary sealing joint, which comprises a transversely arranged joint body and an oil way interface arranged on the upper side wall of the joint body, the lower end of the oil way interface is fixedly sleeved with a connecting ring, the lower end of the connecting ring is fixedly connected with the upper side wall of the joint body, a sealing column is vertically inserted in the oil way interface, and the sealing column is fixedly connected with the upper side wall of the joint body. The sealing column is in threaded connection with the oil way connector, the upper end of the sealing column penetrates through the oil way connector and is fixedly connected with a transversely-arranged connecting disc, the lower end of the connecting disc is fixedly connected with a first rubber ring, and an inner hexagonal groove is formed in the upper end of the connecting disc. A transversely-arranged push disc is slidably connected to the inner side wall of the inner hexagonal groove, and sliding blocks are fixedly connected to the left end and the right end of the push disc correspondingly. According to the utility model, not only can dual sealing be provided for the oil way interface of the joint, but also rapid locking and unlocking can be realized, the loosening condition is effectively prevented, and the reliability is obviously improved.

Description

Technical Field

[0001] This utility model relates to the field of joint technology, and in particular to a hydraulic rotary sealing joint. Background Technology

[0002] Hydraulic rotary sealing joints are key components used in hydraulic systems. They mainly consist of a housing, a rotating shaft, and seals. They enable reliable hydraulic oil sealing connections between rotating and stationary components, allowing the hydraulic oil to maintain stable pressure while rotating, preventing leakage, and ensuring efficient and stable operation of the hydraulic system. They are widely used in equipment requiring rotary hydraulic transmission, such as engineering machinery, machine tools, and metallurgical equipment.

[0003] Hydraulic rotary seal joints typically have multiple oil passage openings on their outer wall to achieve multi-channel hydraulic oil transmission. In practical applications, if some oil passage openings are not currently in use, they usually need to be sealed to prevent the intrusion of foreign matter. Currently, the industry commonly uses a threaded engagement method to screw the plug into the unused opening. However, since equipment operation is often accompanied by vibration and rotation, this conventional sealing method poses a safety hazard of plug loosening, and its reliability urgently needs to be improved. Utility Model Content

[0004] The purpose of this utility model is to solve the problems mentioned in the background art and to provide a hydraulic rotary sealing joint.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A hydraulic rotary sealing joint includes a horizontally arranged joint body and an oil passage interface disposed on its upper side wall. A connecting ring is fixedly sleeved at the lower end of the oil passage interface, and the lower end of the connecting ring is fixedly connected to the upper side wall of the joint body. A sealing post is vertically inserted into the oil passage interface, and the sealing post is threadedly connected to the oil passage interface. The upper end of the sealing post passes through the oil passage interface and is fixedly connected to a horizontally arranged connecting plate. A first rubber ring is fixedly connected to the lower end of the connecting plate. The upper end of the connecting plate has an internal hexagonal groove. A horizontally arranged push plate is slidably connected to the inner side wall of the internal hexagonal groove. Slider blocks are fixedly connected to both ends of the push plate. A sliding groove corresponding to the slider is provided on the inner side wall of the internal hexagonal groove. The end of the slider away from the push plate slides into the sliding groove. The lower end of the slider is fixedly connected to the bottom of the sliding groove. A first spring is connected to the connecting plate. A vertically arranged first through hole is provided at the lower end of the connecting plate near the left edge. A vertically arranged limiting rod is slidably inserted into the inner wall of the first through hole. A pull rope is fixedly connected to the upper end of the limiting rod. A second through hole communicating with a sliding groove is provided at the inner wall of the first through hole near the top. The end of the pull rope away from the limiting rod slides through the first through hole and the second through hole in sequence and is fixedly connected to the slider. The upper end of the connecting ring has multiple limiting grooves distributed in a ring shape, corresponding to the limiting rod. The lower end of the limiting rod passes through the first through hole and slides into the limiting groove. A second spring and a support ring are sequentially sleeved on the limiting rod from top to bottom. The second spring and the limiting rod are slidably connected. The support ring and the limiting rod are fixedly connected. The two ends of the spring abut against the lower end of the connecting plate and the upper end of the support ring, respectively.

[0007] Preferably, a sealing cylinder is slidably sleeved on the upper end of the oil circuit interface, a second rubber ring is fixedly connected to the lower end of the sealing cylinder, and the upper end of the sealing cylinder is fixedly connected to the lower end of the connecting disc.

[0008] Preferably, a vertically arranged guide rod is fixedly connected to the inner bottom of the slide groove, and the upper end of the guide rod slides through the first spring and the slider in sequence and is fixedly connected to the inner top of the slide groove.

[0009] Preferably, the lower end of the limiting rod is tapered.

[0010] Preferably, both ends of the pull rope are fixedly fitted with fixing rings, and the outer walls of the two fixing rings are respectively fixedly connected to the upper ends of the slider and the limiting rod.

[0011] Preferably, the pull cord is made of nylon.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. In this utility model, the components such as the connecting disc, sealing cylinder, second rubber ring, sealing column, first rubber ring, and connecting disc with internal hexagonal groove can provide double sealing for the oil circuit interface of the joint, significantly enhancing the reliability of the seal.

[0014] 2. In this utility model, the push plate, slider, guide rod, first spring, pull rope, limit rod, support ring, second spring and limit groove cooperate with each other to facilitate the user to lock and unlock the position of the connecting plate, effectively prevent the sealing column from loosening, and further improve the reliability of the overall structure.

[0015] 3. This utility model not only provides a double seal for the oil circuit interface of the connector, but also enables quick locking and unlocking, effectively preventing loosening and significantly improving reliability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a hydraulic rotary sealing joint proposed in this utility model;

[0017] Figure 2 This is a partially enlarged structural schematic diagram of a hydraulic rotary sealing joint proposed in this utility model;

[0018] Figure 3 This is a side view of a hydraulic rotary sealing joint proposed in this utility model.

[0019] Figure 4 This is a partial top view of the connecting disc structure of a hydraulic rotary sealing joint proposed in this utility model.

[0020] In the diagram: 1-Connector body, 2-Connecting disc, 3-Sealing cylinder, 4-Connecting ring, 5-Second rubber ring, 6-Oil circuit interface, 7-Sealing column, 8-First rubber ring, 9-Support ring, 10-Second spring, 11-Limiting rod, 12-Pull rope, 13-Slider, 14-First spring, 15-Push plate, 16-Guide rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figure 1-4A hydraulic rotary sealing joint includes a horizontally arranged joint body 1 and an oil passage interface 6 disposed on its upper side wall. A connecting ring 4 is fixedly sleeved at the lower end of the oil passage interface 6 to support a limiting rod 11. The lower end of the connecting ring 4 is fixedly connected to the upper side wall of the joint body 1. A sealing column 7 is vertically inserted into the oil passage interface 6 to seal the oil passage interface 6. The sealing column 7 and the oil passage interface 6 are connected by a thread. The upper end of the sealing column 7 passes through the oil passage interface 6 and is fixedly connected to a horizontally arranged connecting disc 2 to drive the sealing column 7 to rotate. A first rubber ring 8 is fixedly connected to the lower end of the connecting disc 2 to improve the sealing performance. A sealing cylinder 3 is slidably sleeved at the upper end of the oil passage interface 6 to further improve the sealing performance. A second rubber ring 5 is fixedly connected to the lower end of the sealing cylinder 3 to improve the sealing performance between the sealing cylinder 3 and the connecting ring 4. The upper end of the sealing cylinder 3 is fixedly connected to the lower end of the connecting disc 2.

[0023] In this embodiment, the upper end of the connecting plate 2 is provided with an internal hexagonal groove, which is used to facilitate the user to rotate the connecting plate 2 with an internal hexagonal wrench. A horizontally arranged push plate 15 is slidably connected to the inner side wall of the internal hexagonal groove, which is used to drive the slider 13 to move. The left and right ends of the push plate 15 are fixedly connected to the slider 13, which is used to drive the pull rope 12 to move. The inner side wall of the internal hexagonal groove is provided with a groove corresponding to the slider 13. The end of the slider 13 away from the push plate 15 slides into the groove. The lower end of the slider 13 is fixedly connected to the bottom of the groove, which is used to push the slider 13 to move and reset. A vertically arranged guide rod 16 is fixedly connected to the bottom of the groove, which is used to guide the slider 13 to move. The upper end of the guide rod 16 slides through the first spring 14 and the slider 13 in sequence and is fixedly connected to the top of the groove.

[0024] In this embodiment, a vertically arranged first through hole is provided at the lower end of the connecting plate 2 and near the left edge. A vertically arranged limiting rod 11 is slidably inserted into the inner wall of the first through hole to lock the rotation capability of the connecting plate 2 in conjunction with the limiting groove. A pull rope 12 is fixedly connected to the upper end of the limiting rod 11 to drive the limiting rod 11 to move. A second through hole communicating with the slide groove is provided on the inner wall of the first through hole and near the top. The end of the pull rope 12 away from the limiting rod 11 slides through the first through hole and the second through hole in sequence and is fixedly connected to the slider 13. Both ends of the pull rope 12 are fixedly sleeved with fixing rings to improve the firmness of the two ends of the pull rope 12. The outer walls of the two fixing rings are fixedly connected to the upper ends of the slider 13 and the limiting rod 11, respectively. The pull rope 12 is made of nylon material to improve its strength.

[0025] In this embodiment, the upper end of the connecting ring 4 has a plurality of limiting grooves corresponding to the limiting rod 11 in a ring shape. The lower end of the limiting rod 11 passes through the first through hole and slides into the limiting groove. The lower end of the limiting rod 9 is tapered to facilitate the insertion of the limiting rod 11 into the limiting groove. The limiting rod 11 is sleeved with a second spring 10 and a support ring 9 from top to bottom to push the limiting rod 11 down to reset. The second spring 10 and the limiting rod 11 are slidably connected, and the support ring 9 and the limiting rod 11 are fixedly connected. The two ends of the spring 10 abut against the lower end of the connecting plate 2 and the upper end of the support ring 9, respectively.

[0026] In this embodiment, firstly, a manual or electric Allen wrench is inserted into the Allen socket. During insertion, the wrench pushes the push plate 15 downwards, which in turn moves the slider 13 downwards. The slider 13 then moves the pull rope 12, which in turn moves the limit rod 11 upwards, causing the limit rod 11 to move out of the limit slot. At this point, rotating the wrench causes the connecting plate 2 to rotate, which in turn causes the sealing column 7 to rotate. Since the sealing column 7 and the oil passage interface 6 are engaged by threads, the sealing column 7 will screw downwards into the oil passage interface 6, achieving a seal on the oil passage interface 6. Simultaneously, the connecting plate 2 will also move downwards, bringing... The first rubber ring 8 fits tightly against the upper end of the oil circuit interface 6, enhancing the sealing effect. The downward movement of the connecting plate 2 also drives the sealing cylinder 3 to move downward, so that the lower end of the sealing cylinder 3 fits tightly against the upper end of the connecting ring 4. The sealing cylinder 3, together with the second rubber ring 5, further improves the sealing performance. Finally, when the wrench is pulled out, the elastic action of the first spring 14 pushes the slider 13 and the push plate 15 to move upward and reset. The elastic action of the second spring 10 pushes the support ring 9 and the limit rod 11 to move downward and reset, so that the lower end of the limit rod 11 is inserted into the limit groove. This locks the rotation of the connecting plate 2 and prevents the sealing column 7 from loosening.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A hydraulic rotary sealing joint, comprising a joint body (1) arranged laterally and an oil passage interface (6) disposed on its upper side wall, characterized in that: A connecting ring (4) is fixedly sleeved at the lower end of the oil circuit interface (6). The lower end of the connecting ring (4) is fixedly connected to the upper side wall of the connector body (1). A sealing post (7) is vertically inserted into the oil circuit interface (6). The sealing post (7) and the oil circuit interface (6) are connected by a thread. The upper end of the sealing post (7) passes through the oil circuit interface (6) and is fixedly connected to a horizontally arranged connecting plate (2). The lower end of the connecting plate (2) is fixedly connected to a first rubber ring (8). (2) has an internal hexagonal groove at its upper end. A horizontally arranged push plate (15) is slidably connected to the inner wall of the internal hexagonal groove. Slider (13) is fixedly connected to both the left and right ends of the push plate (15). A groove corresponding to the slider (13) is provided on the inner wall of the internal hexagonal groove. The end of the slider (13) away from the push plate (15) slides into the groove. A first spring (14) is fixedly connected between the lower end of the slider (13) and the bottom of the groove. The lower end of the connecting plate (2) A vertically oriented first through hole is provided near the left edge. A vertically oriented limiting rod (11) is slidably inserted into the inner wall of the first through hole. A pull rope (12) is fixedly connected to the upper end of the limiting rod (11). A second through hole communicating with the slide groove is provided on the inner wall of the first through hole near the top. The end of the pull rope (12) away from the limiting rod (11) slides through the first through hole and the second through hole in sequence and is fixedly connected to the slider (13). The upper end of the connecting ring (4) is in the shape of a ring. The limit rod (11) is provided with multiple limit grooves corresponding to the limit rod (11). The lower end of the limit rod (11) passes through the first through hole and slides into the limit groove. The limit rod (11) is fitted with a second spring (10) and a support ring (9) from top to bottom. The second spring (10) and the limit rod (11) are slidably connected. The support ring (9) and the limit rod (11) are fixedly connected. The two ends of the spring (10) abut against the lower end of the connecting plate (2) and the upper end of the support ring (9), respectively.

2. A hydraulic rotary seal coupling according to claim 1, wherein: The upper end of the oil circuit interface (6) is slidably fitted with a sealing cylinder (3), the lower end of the sealing cylinder (3) is fixedly connected with a second rubber ring (5), and the upper end of the sealing cylinder (3) is fixedly connected to the lower end of the connecting plate (2).

3. A hydraulic rotary seal coupling according to claim 1, wherein: The bottom of the chute is fixedly connected to a vertically arranged guide rod (16). The upper end of the guide rod (16) slides through the first spring (14) and the slider (13) in sequence and is fixedly connected to the top of the chute.

4. A hydraulic rotary seal coupling according to claim 1, wherein: The lower end of the limiting rod (11) is tapered.

5. A hydraulic rotary seal coupling as defined in claim 1, wherein: Both ends of the pull rope (12) are fixedly sleeved with fixing rings, and the outer walls of the two fixing rings are fixedly connected to the upper ends of the slider (13) and the limiting rod (11), respectively.

6. A hydraulic rotary seal coupling according to claim 1, wherein: The pull rope (12) is made of nylon.

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