A high-pressure oil pipe connector for machinery

Abstract

This utility model belongs to the technical field of high-pressure oil pipe joints, and more particularly to a high-pressure oil pipe joint for machinery. It includes a joint body, a first connecting oil pipe extending from the inner side of one end of the joint body, and a second connecting oil pipe extending from the inner side of the other end of the joint body. A first annular groove is formed on one side of the joint body, a first threaded groove is formed on the inner wall of one end of the joint body, a locking hole is formed on the outer annular surface of one end of the joint body, and a sealing snap-fit ​​seat is fixedly provided on the inner side of the middle section of the joint body, with a second threaded groove formed on the inner wall of the sealing snap-fit ​​seat. This utility model, through its threaded grooves, sealing snap-fit ​​seat, connecting seat, and threaded joint structure, facilitates rapid connection between the connecting oil pipe and the joint body, while improving the sealing performance and overall sealing effect. Furthermore, the opposite orientation of the threads in the multiple threaded grooves effectively limits movement, preventing loosening of the threads due to vibration.

Description

Technical Field

[0001] This utility model relates to the field of high-pressure oil pipe joint technology, specifically a high-pressure oil pipe joint for machinery. Background Technology

[0002] High-pressure oil pipes are a component of high-pressure oil circuits. They are required to withstand a certain oil pressure and have a certain fatigue strength to ensure the sealing requirements of the pipeline. Automotive high-pressure oil pipes are mainly found in high-pressure injection diesel engines and high-pressure injection direct injection gasoline engines, and can withstand the oil pressure required during engine operation.

[0003] Currently, most high-pressure oil pipes are connected by threaded connections using pipe fittings. However, oil pipes generate significant vibrations during operation. As the vibrations continue, the threaded connections are prone to loosening, weakening the seal. Loosened oil pipes can develop gaps, leading to oil leaks and affecting normal operation.

[0004] Therefore, we propose a high-pressure oil pipe joint for machinery to solve the above problems. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a high-pressure oil pipe connector for machinery. This solves the problem mentioned in the background section where common high-pressure oil pipe connections are often made via threaded connections using pipe connectors. However, oil pipes experience significant vibrations during operation, and with continued vibration, the threaded connections are prone to loosening, weakening the seal. Loosened oil pipes develop gaps, which can lead to oil leaks within the pipe, affecting subsequent normal use.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0009] A high-pressure oil pipe joint for machinery includes a joint body, a first connecting oil pipe extending from the inner side of one end of the joint body, and a second connecting oil pipe extending from the inner side of the other end of the joint body.

[0010] The connector body has a first annular groove on one side, a first threaded groove on the inner wall of one end, a locking hole on the outer annular surface of one end, a sealing snap-fit ​​seat fixed on the inner side of the middle section of the connector body, a second threaded groove on the inner wall of the sealing snap-fit ​​seat, a second annular groove on one side surface of the sealing snap-fit ​​seat, a filter screen fixed inside the middle section of the sealing snap-fit ​​seat, a connecting seat fitted on the outer annular surface of one end of the first connecting oil pipe, an arc-shaped plate fixed on the side wall of the connecting seat, a third threaded groove on the inner wall of the arc-shaped plate, a sealing plate distributed on one side of the arc-shaped plate, and a threaded joint distributed on the side of the sealing plate away from the arc-shaped plate, with a sealing snap ring fixed at one end of the threaded joint.

[0011] Furthermore, a return spring is fixedly connected to the inner cavity of the arc-shaped plate, and a locking rod is fixedly connected to the other end of the return spring. An auxiliary sliding plate is sleeved on the outer ring surface of one end of the locking rod.

[0012] Furthermore, the inner diameter of the first annular groove is adapted to the outer diameter of the arc-shaped plate, and the first annular groove and the joint body form an integrated structure.

[0013] Furthermore, the lock holes are symmetrically distributed along the vertical center line of the connector body, and the inner diameter of the lock holes is adapted to the outer diameter of the lock rod.

[0014] Furthermore, the second threaded groove is symmetrically distributed along the vertical center line of the sealing snap-fit ​​seat, and the thread orientation of the second threaded groove is opposite to that of the first threaded groove.

[0015] Furthermore, the locking rod is slidably connected to the arc-shaped plate via a return spring, and the locking rod is symmetrically distributed along the transverse centerline of the connecting seat.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides a high-pressure oil pipe joint for machinery, which has the following characteristics:

[0018] Beneficial effects:

[0019] This utility model, through its structure including threaded grooves, sealing snap-fit ​​seats, connecting seats, and threaded joints, facilitates the rapid connection between the connecting oil pipe and the joint body, while improving the sealing performance of the connection and achieving a better overall sealing effect. Furthermore, the opposite orientation of the threads in the multiple threaded grooves effectively limits movement and prevents the threads from loosening due to vibration. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2This is a schematic diagram of the cross-sectional structure of the present invention;

[0022] Figure 3 This is a side view of the connecting seat structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the cross-sectional structure of the connector body of this utility model;

[0024] Figure 5 This is a side view of the first connecting oil pipe structure of this utility model.

[0025] In the diagram: 1. Connector body; 2. First connecting oil pipe; 3. Second connecting oil pipe; 4. First annular groove; 5. First threaded groove; 6. Locking hole; 7. Sealing snap-fit ​​seat; 8. Second threaded groove; 9. Second annular groove; 10. Filter screen; 11. Connecting seat; 12. Arc plate; 13. Third threaded groove; 14. Sealing plate; 15. Threaded connector; 16. Sealing snap ring; 17. Return spring; 18. Locking rod; 19. Auxiliary sliding plate. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, an embodiment of the present invention provides a high-pressure oil pipe connector for machinery, including a connector body 1, a first connecting oil pipe 2 extending from the inner side of one end of the connector body 1, the connector body 1 having a hollow structure and the internal space of the connector body 1 being distributed in a stepped manner, and a second connecting oil pipe 3 extending from the inner side of the other end of the connector body 1.

[0029] A first annular groove 4 is formed on one side of the connector body 1, and a first threaded groove 5 is formed on the inner wall of one end of the connector body 1. The threads of the first threaded groove 5 and the second threaded groove 8 are arranged facing each other. A locking hole 6 is formed on the outer annular surface of one end of the connector body 1. A sealing snap-fit ​​seat 7 is fixedly provided on the inner side of the middle section of the connector body 1, and a second threaded groove 8 is formed on the inner wall of the sealing snap-fit ​​seat 7. A second annular groove 9 is formed on one side surface of the sealing snap-fit ​​seat 7. A filter screen 10 is fixedly provided inside the middle section of the sealing snap-fit ​​seat 7. A connecting seat 11 is fitted on the outer annular surface of one end of the first connecting oil pipe 2. An arc-shaped plate 12 is fixedly provided on the side wall of 1. A rotatable connection is formed between the connecting seat 11 and the first connecting oil pipe 2. The arc-shaped plate 12 is arranged in an arc shape and is symmetrically distributed on both sides of the connecting seat 11. A third threaded groove 13 is opened on the inner side wall of the arc-shaped plate 12. A sealing plate 14 is distributed on one side of the arc-shaped plate 12, and a threaded joint 15 is distributed on the side of the sealing plate 14 away from the arc-shaped plate 12. A sealing ring 16 is fixedly provided at one end of the threaded joint 15. The sealing ring 16 is made of rubber material, and the size of the sealing ring 16 is adapted to the inner diameter of the second annular groove 9.

[0030] In use, the first connecting oil pipe 2 and the second connecting oil pipe 3 are first introduced into the inner side of the connector body 1 from both ends. At this time, the first connecting oil pipe 2 drives the threaded connector 15 fixed at one end to move laterally inside the connector body 1. Then, the threaded connector 15 is threadedly connected to the second threaded groove 8 opened on the inner side wall of one end of the sealing retainer 7. Then, the first connecting oil pipe 2 is turned, causing the first connecting oil pipe 2 to drive the threaded connector 15 to be threadedly connected to the second threaded groove 8. As the threaded connector 15 goes deeper into the inner side of one end of the sealing retainer 7, the sealing retainer 16 will be engaged in the inner side of the second annular groove 9, thereby improving the sealing effect between the two. As the first connecting oil pipe 2 goes deeper, the sealing plate 14 sleeved on the outer annular surface of one end will be engaged in the inner side of the connector body 1, thereby further providing a sealing effect for the connection of the first connecting oil pipe 2. Then, when the threaded connector 15 goes deeper into the inner side of the connector body 1, the sealing plate 14 will be engaged in the inner side of the connector body 1, thereby providing a sealing effect for the connection of the first connecting oil pipe 2. After the connector 15 is installed, as the first connecting oil pipe 2 moves, the connecting seat 11 will drive the arc plate 12 to engage with the inner side of the first annular groove 4. At this time, the connecting seat 11 is turned, and the movement of the connecting seat 11 drives the arc plate 12 to move in a circle along the inner side of the first annular groove 4. Since the bottom inner wall of the arc plate 12 is provided with a third threaded groove 13, and the third threaded groove 13 and the first threaded groove 5 form a threaded connection, the threaded connection between the two threaded grooves can be achieved as the arc plate 12 rotates. It is worth noting that the rotational connection direction of the first threaded groove 5 and the third threaded groove 13 is opposite to the rotational connection direction of the threaded connector 15 and the second threaded groove 8. The positive and negative restriction structure achieves a better fixing effect, thereby preventing the oil pipe from falling off the connector. After the connecting oil pipes on both sides are connected, it is convenient for subsequent normal use. The filter screen 10 is used to perform simple filtration of the flowing liquid.

[0031] like Figure 3 As shown, in some embodiments, a return spring 17 is fixedly connected to the inner cavity of the arc plate 12. The two ends of the return spring 17 are fixedly connected to one end of the locking rod 18 and the inner sidewall of the arc plate 12, respectively. The other end of the return spring 17 is fixedly connected to the locking rod 18. An auxiliary sliding plate 19 is sleeved on the outer ring surface of one end of the locking rod 18.

[0032] When in use, as the arc plate 12 moves in a circular motion along the inner side of the first annular groove 4 and forms a threaded connection with the first threaded groove 5 through the third threaded groove 13, the locking rod 18 moves to one side of the locking hole 6. At this time, the pressure applied to the locking rod 18 disappears, and then the reverse force generated by the deformation of the return spring 17 will push the locking rod 18 in the opposite direction, inputting one end of the locking rod 18 into the locking hole 6, thereby further realizing the positioning of the arc plate 12. After being positioned, the arc plate 12 can effectively prevent the generation of gaps at the threaded connection due to vibration during the entire use of the joint.

[0033] like Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, in some embodiments, the inner diameter of the first annular groove 4 is adapted to the outer diameter of the arc plate 12, and the first annular groove 4 and the connector body 1 form an integrated structure.

[0034] When in use, since the size of the arc plate 12 is adapted to the size of the first annular groove 4, the two arc plates 12 will move in a circle along the inner side of the first annular groove 4 during subsequent use. The first annular groove 4 can be used to guide the engagement of the arc plates 12.

[0035] like Figure 4 As shown, in some embodiments, the lock holes 6 are symmetrically distributed along the vertical center line of the connector body 1, and the inner diameter of the lock holes 6 is adapted to the outer diameter of the lock rod 18;

[0036] When in use, once one end of the locking rod 18 is inserted into the inside of the lock hole 6, it is convenient to quickly position the arc plate 12.

[0037] like Figure 4 As shown, in some embodiments, the second threaded groove 8 is symmetrically distributed along the vertical center line of the sealing snap-fit ​​seat 7, and the thread orientation of the second threaded groove 8 is opposite to that of the thread orientation of the first threaded groove 5.

[0038] In use, since the second threaded groove 8 is symmetrically arranged on both sides of the sealing card seat 7, and the second threaded groove 8 and the threaded connector 15 form a threaded connection, the threaded connector 15 and the sealing card seat 7 can be quickly connected when the threaded connector 15 and the second threaded groove 8 are threadedly connected.

[0039] like Figure 3 As shown, in some embodiments, the locking rod 18 is slidably connected to the arc plate 12 via the return spring 17, and the locking rod 18 is symmetrically distributed along the transverse center line of the connecting seat 11.

[0040] During use, the reverse force generated by the deformation of the return spring 17 will push the locking rod 18 in the opposite direction, which will facilitate the subsequent input of one end of the locking rod 18 into the lock hole 6, so as to achieve a stable connection between the arc plate 12 and the connector body 1.

[0041] In summary, firstly, the first connecting oil pipe 2 and the second connecting oil pipe 3 are respectively fed into the inner side of the connector body 1 from both ends. At this time, the first connecting oil pipe 2 drives the threaded connector 15 to move laterally. Subsequently, the threaded connector 15 is threadedly connected to the second threaded groove 8. As the threaded connector 15 penetrates deeper into the inner side of one end of the sealing snap seat 7, the sealing snap ring 16 is engaged in the inner side of the second annular groove 9, thereby improving the sealing effect of the connection between the two. As the first connecting oil pipe 2 penetrates deeper, the sealing plate 14 sleeved on the outer annular surface of one end is engaged in the inner side of the connector body 1, thereby further providing a sealing effect for the connection of the first connecting oil pipe 2. After the threaded connector 15 is installed, as the first connecting oil pipe 2 moves, the connecting seat 11 drives the arc plate 12 to engage in the inner side of the first annular groove 4. At this time, the connecting seat 11 is turned, and the movement of the connecting seat 11 drives the arc plate 12 to move along the inner side of the first annular groove 4. The arc plate 12 rotates in a circular motion along the inner side of the first annular groove 4. Since the inner wall of the bottom of the arc plate 12 has a third threaded groove 13, and the third threaded groove 13 forms a threaded connection with the first threaded groove 5, the rotation of the arc plate 12 enables a threaded connection between the two threaded grooves. It is noteworthy that the rotational connection direction of the first threaded groove 5 and the third threaded groove 13 is opposite to the rotational connection direction of the threaded connector 15 and the second threaded groove 8. This forward and reverse restraint structure achieves better fixation, preventing the oil pipe from detaching from the connector. As the arc plate 12 connects to the connector body 1, the locking rod 18 moves to one side of the locking hole 6. Then, the return spring 17 pushes the locking rod 18 in the opposite direction, inserting one end of the locking rod 18 into the locking hole 6, further positioning the arc plate 12. After positioning, the arc plate 12 effectively prevents gaps from forming at the threaded connection due to vibration during the entire use of the connector.

[0042] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-pressure oil pipe connector for machinery, comprising a connector body (1), a first connecting oil pipe (2) extending from the inner side of one end of the connector body (1), and a second connecting oil pipe (3) extending from the inner side of the other end of the connector body (1); Its features are: The connector body (1) has a first annular groove (4) on one side, a first threaded groove (5) on the inner wall of one end, a locking hole (6) on the outer annular surface of one end, a sealing snap-fit ​​seat (7) fixedly installed on the inner side of the middle section of the connector body (1), and a second threaded groove (8) on the inner wall of the sealing snap-fit ​​seat (7), a second annular groove (9) on one side surface, and a second threaded groove (9) on the inner side surface of the middle section of the sealing snap-fit ​​seat (7). A filter screen (10) is fixedly provided. A connecting seat (11) is sleeved on the outer ring surface of one end of the first connecting oil pipe (2). An arc plate (12) is fixedly provided on the side wall of the connecting seat (11). A third threaded groove (13) is opened on the inner side wall of the arc plate (12). A sealing plate (14) is distributed on one side of the arc plate (12). A threaded joint (15) is distributed on the side of the sealing plate (14) away from the arc plate (12). A sealing retaining ring (16) is fixedly provided at one end of the threaded joint (15).

2. The high-pressure oil pipe joint for machinery according to claim 1, characterized in that: The inner cavity of the arc plate (12) is fixedly connected to a return spring (17), and the other end of the return spring (17) is fixedly connected to a locking rod (18). An auxiliary sliding plate (19) is sleeved on the outer ring surface of one end of the locking rod (18).

3. A high-pressure oil pipe joint for machinery according to claim 1, characterized in that: The inner diameter of the first annular groove (4) is compatible with the outer diameter of the arc plate (12), and the first annular groove (4) and the connector body (1) form an integrated structure.

4. A high-pressure oil pipe connector for machinery according to claim 1, characterized in that: The lock holes (6) are symmetrically distributed along the vertical center line of the connector body (1), and the inner diameter of the lock holes (6) is adapted to the outer diameter of the lock rod (18).

5. A high-pressure oil pipe joint for machinery according to claim 1, characterized in that: The second threaded groove (8) is symmetrically distributed along the vertical center line of the sealing card seat (7), and the thread orientation of the second threaded groove (8) is opposite to that of the thread orientation of the first threaded groove (5).

6. A high-pressure oil pipe joint for machinery according to claim 2, characterized in that: The locking rod (18) is slidably connected to the arc plate (12) through the return spring (17), and the locking rod (18) is symmetrically distributed along the transverse center line of the connecting seat (11).

Images