Self-lubricating hydraulic connecting device

Abstract

The utility model provides a hydraulic connecting device with a self-lubricating function, which relates to the technical field of hydraulic connection and comprises a connecting pipe, an annular cavity is arranged inside the inner wall of the connecting pipe, first oil outlets are arranged on the inner wall of one end of the annular cavity at equal intervals, and a fixing pipe is fixedly connected to the surface of the connecting pipe. One end of the fixed pipe is fixed and communicated with a timing control valve, the other end of the connecting pipe is fixed and communicated with an annular plate, a conical ring groove is formed in the inner wall of the annular plate, and a conical ring plate is embedded in the conical ring groove. The timing control valve can be opened and closed in a timing mode, lubricating oil can enter the annular cavity in a timing mode and enter the trapezoidal annular groove through the first oil outlet hole, at the moment, oil in the trapezoidal annular groove enters the circular groove and is discharged out of the second oil outlet hole to lubricate the connecting position, and the automatic timing lubricating effect can be achieved; therefore, the effects of saving time and labor can be achieved, and meanwhile the lubrication uniformity can be improved.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic connection technology, and in particular to an automatic lubrication hydraulic connection device. Background Technology

[0002] In modern industrial production, hydraulic systems are widely used in various types of mechanical equipment, and their stable and efficient operation is crucial to the entire production process. Hydraulic connection devices, as key components of hydraulic systems, are responsible for transmitting hydraulic power and signals, and their performance directly affects the overall performance of the system.

[0003] Existing technologies, such as Chinese Patent Publication No. CN220354759U, disclose a hydraulic hose connection device, relating to the field of hydraulic hose technology. This utility model solves the problems of existing hydraulic hose connection devices being externally located, using a clamping ring and fastening screw, which is time-consuming to connect and exposes the connection point to the external environment for a long time, causing dust or moisture to accumulate at the interface, making subsequent disassembly difficult. This utility model avoids the influence of the external environment and is not easily damaged by external forces through built-in first and second connecting rings. At the same time, the snap-fit ​​design allows for quick and labor-saving connection, making it easy for inexperienced workers to operate. The sealing ring inside the first connecting ring has a certain flow guiding effect. When the hydraulic pressure is uniform, the liquid flow velocity inside the sealing ring will be slightly greater than the liquid flow velocity in the center, thereby generating a certain jet phenomenon, offsetting the problem of the built-in connection structure affecting the liquid flow velocity.

[0004] While the aforementioned patented technologies utilize first and second connecting rings to avoid external environmental influences and prevent damage from external forces, and feature a snap-fit ​​design for quick and effortless connection, facilitating operation by less experienced workers, and an internal sealing ring with a flow-guiding effect (the fluid velocity within the sealing ring is slightly higher than in the center when hydraulic pressure is uniform, creating a jetting effect that offsets the impact of the internal connecting structure on fluid velocity), the hydraulic system operates continuously. This typically requires manual lubrication, with operators performing procedures at fixed intervals. However, the fast pace of actual work, human error, or scheduling conflicts frequently lead to untimely lubrication. Manual lubrication relies on worker experience, resulting in variations in the amount and coverage of grease applied by different workers. Even with the same worker, consistent lubrication is difficult to guarantee each time. In some high-precision hydraulic equipment, the uniformity of lubrication at connection points is extremely critical; therefore, an automatic lubrication hydraulic connection device is needed to address these issues. Utility Model Content

[0005] The purpose of this invention is to solve the problem in existing hydraulic systems that operate continuously for extended periods, relying on manual lubrication, which requires operators to perform operations at fixed time intervals. However, in reality, fast-paced work schedules, human error, or work scheduling conflicts often lead to untimely lubrication. Therefore, this invention proposes an automatic lubrication hydraulic connection device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an automatic lubrication hydraulic connection device, comprising a connecting pipe, an annular cavity formed inside the inner wall of the connecting pipe, a first oil outlet hole formed at equal intervals on the inner wall of one end of the annular cavity, a fixed pipe fixedly connected to the surface of the connecting pipe, a timer control valve fixedly connected to one end of the fixed pipe, an annular plate fixedly connected to the other end of the connecting pipe, a conical annular groove formed inside the inner wall of the annular plate, a conical annular plate embedded inside the conical annular groove, a connector fixedly connected to one end of the conical annular plate, a spiral sleeve sleeved and rotatably connected to the surface of the conical annular plate, the inner wall of the spiral sleeve being spirally connected to the outer arc wall of the connector, a trapezoidal annular groove formed at one end of the connector, circular grooves formed at equal intervals on the inner wall of the trapezoidal annular groove, and a second oil outlet hole formed at equal intervals on the outer arc wall of the connector, the second oil outlet hole communicating with the circular groove.

[0007] Preferably, one end of the connecting pipe is fixed and connected to an inlet pipe.

[0008] Preferably, the other end of the timing control valve is fixed and connected to an oil inlet pipe.

[0009] Preferably, a hexagonal sleeve is fitted and fixedly connected to the surface of the spiral sleeve.

[0010] Preferably, a limiting ring plate is fitted and fixedly connected to the surface of the joint and located on one side of the spiral sleeve.

[0011] Preferably, a first sealing ring gasket is fixedly connected to one side wall of the limiting ring plate, and the first sealing ring gasket is in contact with one end of the spiral sleeve.

[0012] Preferably, a second sealing ring gasket is embedded and fixedly connected to one side wall of the annular plate, and the second sealing ring gasket is in contact with one end of the joint.

[0013] Preferably, one end of the first oil outlet is aligned with the trapezoidal annular groove.

[0014] Preferably, the second oil outlet has ten rows, with six second oil outlets in each row.

[0015] Preferably, the other end of the connector is fixed and connected to a liquid outlet pipe.

[0016] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0017] 1. In this utility model, the timing control valve can open and close the valve at regular intervals, which can allow lubricating oil to enter the annular cavity at regular intervals and enter the trapezoidal annular groove through the first oil outlet. At this time, the oil inside the trapezoidal annular groove will enter the circular groove and be discharged from the second oil outlet to lubricate the connection. This can achieve the effect of automatic timed lubrication, thereby saving time and effort, and also improving the uniformity of lubrication.

[0018] 2. In this utility model, the first sealing ring gasket and the second sealing ring gasket can prevent lubricating oil from leaking from the edge of the connection, thereby preventing lubricating oil waste. Attached Figure Description

[0019] Figure 1 A three-dimensional view of the overall structure of an automatic lubrication hydraulic connection device is provided for this utility model;

[0020] Figure 2 A cross-sectional view of the overall structure of an automatic lubrication hydraulic connection device is provided for this utility model;

[0021] Figure 3 This utility model proposes an automatic lubrication hydraulic connection device. Figure 2 Enlarged view of the structure of area A in the middle;

[0022] Figure 4 A cross-sectional view of the connector structure of an automatic lubrication hydraulic connection device is provided for this utility model;

[0023] Figure 5 This utility model provides a cross-sectional view of the pipe structure of an automatic lubrication hydraulic connection device.

[0024] Legend: 1. Connecting pipe; 2. Inlet pipe; 3. Annular cavity; 4. First oil outlet; 5. Fixed pipe; 6. Timer control valve; 7. Oil inlet pipe; 8. Annular plate; 9. Conical annular groove; 10. Conical annular plate; 11. Connector; 12. Spiral sleeve; 13. Hexagonal sleeve; 14. Limiting annular plate; 15. First sealing ring gasket; 16. Second sealing ring gasket; 17. Outlet pipe; 18. Circular groove; 19. Second oil outlet; 20. Trapezoidal annular groove. Detailed Implementation

[0025] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0027] Example 1, such as Figure 1-5 As shown, this utility model provides an automatic lubrication hydraulic connection device, including a pipe 1. The inner wall of the pipe 1 has an annular cavity 3. One end of the annular cavity 3 has a first oil outlet hole 4 at equal intervals on its inner wall. A fixed pipe 5 is fixedly connected to the surface of the pipe 1. One end of the fixed pipe 5 is fixed and connected to a timer control valve 6. The other end of the pipe 1 is fixed and connected to an annular plate 8. The inner wall of the annular plate 8 has a conical annular groove 9. A conical annular plate 10 is embedded inside the conical annular groove 9. One end of the conical annular plate 10 is fixedly connected to a connector 11. A spiral sleeve 12 is sleeved on the surface of the conical annular plate 10 and rotatably connected to it. The inner wall of the spiral sleeve 12 is spirally connected to the outer arc wall of the connector 11. One end of the connector 11 has a trapezoidal annular groove 20. The inner wall of the trapezoidal annular groove 20 has circular grooves 18 at equal intervals. The outer arc wall of the connector 11 has second oil outlet holes 19 at equal intervals. The second oil outlet holes 19 are interconnected with the circular grooves 18.

[0028] The overall effect of embodiment 1 is as follows: An annular cavity 3 is formed inside the inner wall of the connecting pipe 1. A first oil outlet hole 4 is formed at equal intervals on the inner wall of one end of the annular cavity 3, allowing lubricating oil inside the annular cavity 3 to be discharged from the first oil outlet hole 4. A fixed pipe 5 is fixedly connected to the surface of the connecting pipe 1. One end of the fixed pipe 5 is fixedly connected to a timer control valve 6, allowing the timer control valve 6 to control the entry of lubricating oil into the annular cavity 3. An annular plate 8 is fixedly connected to the other end of the connecting pipe 1. A conical annular groove 9 is formed on the inner wall of the annular plate 8. A conical annular plate 10 is embedded inside the conical annular groove 9. A connector 11 is fixedly connected to one end of the conical annular plate 10. A bearing is fitted onto the surface of the conical annular plate 10 and rotates within it. A spiral sleeve 12 is attached, and the inner wall of the spiral sleeve 12 is spirally connected to the outer arc wall of the connector 11. This allows the conical ring plate 10 to be embedded inside the conical ring groove 9. Then, the spiral sleeve 12 is fitted onto the connector 11 and rotated to achieve the effect of connection and fixation. A trapezoidal ring groove 20 is provided at one end of the connector 11. The inner wall of the trapezoidal ring groove 20 is provided with equally spaced circular grooves 18. The outer arc wall of the connector 11 is provided with equally spaced second oil outlet holes 19. The second oil outlet holes 19 are interconnected with the circular grooves 18. This allows the oil discharged from the first oil outlet hole 4 to enter the trapezoidal ring groove 20, and the lubricating oil inside the trapezoidal ring groove 20 to enter the circular grooves 18. The lubricating oil in the circular grooves 18 can be discharged from the second oil outlet hole 19.

[0029] Example 2, as Figure 1-5As shown, one end of the connecting pipe 1 is fixed and connected to the liquid inlet pipe 2; the other end of the timer control valve 6 is fixed and connected to the oil inlet pipe 7; a hexagonal sleeve 13 is fitted and fixedly connected to the surface of the spiral sleeve 12; a limiting ring plate 14 is fitted and fixedly connected to the surface of the connector 11 and located on one side of the spiral sleeve 12; a first sealing ring gasket 15 is fixedly connected to one side wall of the limiting ring plate 14, and the first sealing ring gasket 15 is in contact with one end of the spiral sleeve 12; a second sealing ring gasket 16 is embedded and fixedly connected to one side wall of the annular plate 8, and the second sealing ring gasket 16 is in contact with one end of the connector 11; one end of the first oil outlet hole 4 is aligned with the trapezoidal annular groove 20; there are ten rows of second oil outlet holes 19, with six second oil outlet holes 19 in each row; and the other end of the connector 11 is fixed and connected to the liquid outlet pipe 17.

[0030] The overall effect of embodiment 2 is as follows: One end of the connecting pipe 1 is fixed and connected to the inlet pipe 2, allowing liquid to enter the interior of the connecting pipe 1 from the inlet pipe 2; the other end of the timer control valve 6 is fixed and connected to the oil inlet pipe 7, allowing lubricating oil to pass through the timer control valve 6 from the oil inlet pipe 7 and enter the interior of the annular cavity 3; a hexagonal sleeve 13 is fitted and fixedly connected to the surface of the spiral sleeve 12, facilitating the rotation of the spiral sleeve 12; a limiting ring plate 14 is fitted and fixedly connected to the surface of the connector 11 and located on one side of the spiral sleeve 12, limiting the spiral sleeve 12 against the limiting ring plate 14; a first sealing ring gasket 15 is fixedly connected to one side wall of the limiting ring plate 14, and the first sealing ring gasket 15 is connected to one end of the spiral sleeve 12. The first sealing ring gasket 15 seals the spacer ring 14 and the spiral sleeve 12. A second sealing ring gasket 16 is embedded and fixedly connected to one side wall of the annular plate 8, and the second sealing ring gasket 16 is attached to one end of the connector 11, sealing the spacer ring 11 and the annular plate 8. One end of the first oil outlet 4 is aligned with the trapezoidal annular groove 20, allowing oil to enter the trapezoidal annular groove 20. Ten rows of ten second oil outlets 19, with six outlets in each row, allow lubricating oil to enter the space between the spiral sleeve 12 and the connector 11. The other end of the connector 11 is fixed and connected to a liquid outlet pipe 17, allowing liquid to exit from the liquid outlet pipe 17.

[0031] Working principle: By embedding the conical ring plate 10 into the trapezoidal ring groove 20, and then by fitting the spiral sleeve 12 onto the surface of the connector 11 and rotating it, the first sealing ring gasket 15 and the second sealing ring gasket 16 are squeezed against each other between the connecting pipe 1 and the connector 11, thus sealing the connection between the connecting pipe 1 and the connector 11. At this time, the timing is controlled by the timing control valve 6. When the time is up, the timing control valve 6 controls the lubricating oil to enter the ring cavity 3. The lubricating oil in the ring cavity 3 can pass through the first oil outlet 4 into the trapezoidal ring groove 20. The lubricating oil in the trapezoidal ring groove 20 can enter the circular groove 18. The lubricating oil in the circular groove 18 can be discharged from the second oil outlet 19 into the space between the spiral sleeve 12 and the connector 11, thus automatically lubricating the hydraulic connection device.

[0032] The wiring diagrams of the connecting pipe 1, timer control valve 6, connector 11, first sealing ring gasket 15 and second sealing ring gasket 16 in this utility model are common knowledge in the field. Their working principle is a well-known technology. The appropriate model is selected according to actual use. Therefore, the control method and wiring arrangement of the connecting pipe 1, timer control valve 6, connector 11, first sealing ring gasket 15 and second sealing ring gasket 16 will not be explained in detail.

[0033] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. An automatic lubrication hydraulic connection device, comprising a connecting pipe (1), characterized in that: The inner wall of the connector (1) is provided with an annular cavity (3). One end of the annular cavity (3) is provided with a first oil outlet hole (4) at equal intervals on its inner wall. A fixed pipe (5) is fixedly connected to the surface of the connector (1). One end of the fixed pipe (5) is fixed and connected to a timed control valve (6). The other end of the connector (1) is fixed and connected to an annular plate (8). The inner wall of the annular plate (8) is provided with a conical annular groove (9). A conical annular plate (10) is embedded inside the conical annular groove (9). One end of the conical ring plate (10) is fixedly connected to a connector (11). A spiral sleeve (12) is sleeved on the surface of the conical ring plate (10) and rotatably connected to the bearing. The inner wall of the spiral sleeve (12) is spirally connected to the outer arc wall of the connector (11). One end of the connector (11) is provided with a trapezoidal ring groove (20). The inner wall of the trapezoidal ring groove (20) is provided with circular grooves (18) at equal intervals. The outer arc wall of the connector (11) is provided with second oil outlet holes (19) at equal intervals. The second oil outlet holes (19) are connected to the circular grooves (18).

2. The automatic lubrication hydraulic connection device according to claim 1, characterized in that: One end of the connector (1) is fixed and connected to the liquid inlet pipe (2).

3. The automatic lubrication hydraulic connection device according to claim 1, characterized in that: The other end of the timing control valve (6) is fixed and connected to the oil inlet pipe (7).

4. The automatic lubrication hydraulic connection device according to claim 1, characterized in that: The surface of the spiral sleeve (12) is fitted with and fixedly connected to a hexagonal sleeve (13).

5. The automatic lubrication hydraulic connection device according to claim 1, characterized in that: The connector (11) is fitted with and fixedly connected to a limiting ring plate (14) on the surface of the connector (11) and on one side of the spiral sleeve (12).

6. The automatic lubrication hydraulic connection device according to claim 5, characterized in that: The first sealing ring gasket (15) is fixedly connected to one side wall of the limiting ring plate (14), and the first sealing ring gasket (15) is attached to one end of the spiral sleeve (12).

7. The automatic lubrication hydraulic connection device according to claim 1, characterized in that: A second sealing ring gasket (16) is embedded and fixedly connected to one side wall of the annular plate (8), and the second sealing ring gasket (16) is attached to one end of the connector (11).

8. The automatic lubrication hydraulic connection device according to claim 1, characterized in that: One end of the first oil outlet (4) is aligned with the trapezoidal annular groove (20).

9. The automatic lubrication hydraulic connection device according to claim 1, characterized in that: The second oil outlet (19) is arranged in ten rows, with six second oil outlets (19) in each row.

10. The automatic lubrication hydraulic connection device according to claim 1, characterized in that: The other end of the connector (11) is fixed and connected to the liquid outlet pipe (17).

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