A high-pressure oil pipe joint with anti-loosening structure

Abstract

This utility model discloses a high-pressure oil pipe connector with an anti-loosening structure for mating with an equipment interface. The high-pressure oil pipe connector includes a connector body, an adjusting nut, and a mating seat. The adjusting nut is disposed between the connector body and the mating seat, and the adjusting nut and the mating seat are sequentially sleeved on the connector body, with a sliding fit between them. A first external thread on the connector body mates with a first internal thread on the inner wall of the adjusting nut; a second external thread on the mating seat mates with a second internal thread on the equipment interface, and the threads of the first external thread on the connector body and the second external thread on the mating seat are arranged in opposite directions. This application's oil pipe connector is designed with a structure in which the connector body, adjusting nut, and mating seat mate. The mating seat is limited by the engagement of two sets of oppositely mating threads, preventing loosening between the mating seat and the equipment interface.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil pipe connection, and in particular relates to a high-pressure oil pipe joint with an anti-loosening structure. Background Art

[0002] The reliable circulation of the three major mediums of the engine - oil (fuel and lubricating oil), water and gas - is a prerequisite for its normal operation. The oil and water pipelines and the intake and exhaust pipes are important structures to ensure the complete circulation of oil, water and gas.

[0003] Existing oil pipe joints are usually one-piece, with one end connected to the oil pipe and the other end connected to the equipment interface. The vibration caused by long-term use of the machine will not only cause the joint to loosen and leak oil, but may even cause the joint and the equipment interface to fall off. In addition, the one-piece joint needs to be replaced as a whole after being worn, resulting in a waste of materials. Utility Model Content

[0004] In order to make up for the deficiencies of the prior art, the utility model provides a high-pressure oil pipe joint with an anti-loosening structure to solve the problems that the existing oil pipe joints are prone to loosening during use, resulting in poor sealing. The specific technical solution is as follows:

[0005] The high-pressure oil pipe joint with an anti-loosening structure is used to cooperate with an equipment interface. The high-pressure oil pipe joint includes a joint body, an adjusting nut and a docking seat. The adjusting nut is arranged between the joint body and the docking seat, and the adjusting nut and the docking seat are sequentially sleeved on the joint body. The adjusting nut and the docking seat are slidably matched; and

[0006] The first external thread set on the joint body cooperates with the first internal thread set on the inner wall of the adjusting nut; the second external thread set on the docking seat cooperates with the second internal thread set in the equipment interface, and the thread teeth of the first external thread set on the joint body and the second external thread set on the docking seat are arranged in opposite directions to each other.

[0007] Furthermore, the joint body is a tubular structure, including a threaded section and a sliding section, the threaded section is provided with a first external thread, and one end of the sliding section away from the threaded section is connected to the oil pipe through a metal casing.

[0008] Furthermore, the outer diameter of the threaded section is consistent with the outer diameter of the sliding section.

[0009] Furthermore, the docking seat includes an integrally arranged retaining ring and a docking nut, the second external thread is arranged on the outer wall of the docking nut, and the outer diameter of the retaining ring is greater than the outer diameter of the docking nut.

[0010] Furthermore, the retaining ring and the connecting nut are both hollow, and a channel 1 for cooperating with the joint body is provided in the retaining ring, and a channel 2 for cooperating with the adjusting nut is provided in the connecting nut. The inner diameter of the channel 1 is smaller than the inner diameter of the channel 2, and the connection between the channel 1 and the channel 2 is provided as a flaring structure to form a flaring slope.

[0011] Furthermore, the retaining ring is slidably sleeved on the sliding section of the joint body through channel 1; the outer wall of the adjusting nut is slidably matched with the inner wall of channel 2 of the docking nut.

[0012] Furthermore, the adjusting nut is sleeved on the threaded section of the joint body, and one end of the adjusting nut movably fitted with the flaring bevel is arranged as a cut surface.

[0013] Furthermore, the oil outlet at the front end of the threaded section is configured as a tapered structure that gradually tightens outwards.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] (1) The oil pipe joint of the present application is designed as a structure in which a joint body, an adjusting nut and a docking seat cooperate with each other. The docking seat is limited by the cooperation of two sets of oppositely arranged thread teeth (i.e., a first external thread arranged on the joint body cooperates with a first internal thread arranged on the inner wall of the adjusting nut, a second external thread arranged on the docking seat cooperates with a second internal thread arranged in the equipment interface, and the thread teeth of the first external thread arranged on the joint body and the second external thread arranged on the docking seat are arranged opposite to each other) to prevent the docking seat from loosening between the docking seat and the equipment interface.

[0016] (2) The oil pipe joint of the present application is a split structure. Compared with the existing one-piece oil pipe joint that needs to be replaced as a whole due to wear and tear, resulting in material waste, the present application can replace any one of the three accessories among the joint body, adjusting nut and docking seat separately, avoiding material waste and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 This is a structural separation diagram of the utility model.

[0019] In the figure: 1-connector body, 11-threaded section, 12-sliding section, 13-first external thread, 14-oil outlet, 2-adjusting nut, 21-first internal thread, 22-cut surface, 3-docking seat, 31-retaining ring, 311-channel one, 32-docking nut, 321-channel two, 33-second external thread, 34-flaring bevel, 4-equipment interface, 41-second internal thread, 5-metal casing, 6-oil pipe. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to more clearly understand the technical solution of the present application, the present invention is further described below in conjunction with the accompanying drawings.

[0021] like Figure 1 and Figure 2 In one embodiment shown, a high-pressure oil pipe joint with an anti-loosening structure is used to cooperate with an equipment interface 4. The high-pressure oil pipe joint includes a joint body 1, an adjusting nut 2 and a docking seat 3. The adjusting nut 2 is arranged between the joint body 1 and the docking seat 3. The adjusting nut 2 and the docking seat 3 are sleeved on the joint body 1 in sequence, and the adjusting nut 2 and the docking seat 3 are slidably matched; the first external thread 13 arranged on the joint body 1 cooperates with the first internal thread 21 arranged on the inner wall of the adjusting nut 2; the second external thread 33 arranged on the docking seat 3 cooperates with the second internal thread 41 arranged in the equipment interface 4, and the thread teeth of the first external thread 13 arranged on the joint body 1 and the second external thread 33 arranged on the docking seat 3 are arranged in opposite directions. That is, through the cooperation of two sets of oppositely arranged thread teeth, the docking seat 3 is limited to prevent the docking seat 3 from loosening with the equipment interface 4.

[0022] In this embodiment, the joint body 1 is a tubular structure, including a threaded section 11 and a sliding section 12. The threaded section 11 is provided with a first external thread 13, and the oil outlet 14 at the front end of the threaded section 11 is provided with a tapered structure that gradually tightens outward; the end of the sliding section 12 away from the threaded section 11 is connected to the oil pipe 6 through a metal sleeve 5. In order to ensure smooth sleeve connection between the docking seat 3 and the adjusting nut 2, the outer diameter of the threaded section 11 is consistent with the outer diameter of the sliding section 12.

[0023] Specifically, the docking seat 3 includes an integrally arranged retaining ring 31 and a docking nut 32, a second external thread 33 is arranged on the outer wall of the docking nut 32, and the outer diameter of the retaining ring 31 is larger than the outer diameter of the docking nut 32. The retaining ring 31 and the docking nut 32 are both hollow, a channel 1 311 is arranged in the retaining ring 31 for cooperating with the joint body 1, and a channel 2 321 is arranged in the docking nut 32 for cooperating with the adjusting nut 2, the inner diameter of the channel 1 311 is smaller than the inner diameter of the channel 2 321, and the connection between the channel 1 311 and the channel 2 321 is arranged as a flaring structure to form a flaring inclined surface 34. The retaining ring 31 is slidably sleeved on the sliding section 12 of the joint body 1 through the channel 1 311; the outer wall of the adjusting nut 2 is slidably matched with the inner wall of the channel 2 321 of the docking nut 32. In order to achieve a better matching effect, the adjusting nut 2 is sleeved on the threaded section 11 of the joint body 1, and a cut surface 22 is arranged at one end of the adjusting nut 2 that is movably matched with the flaring inclined surface 34.

[0024] The oil pipe joint of the present application is a split structure. During long-term use, any one of the three accessories, namely the joint body, the adjusting nut and the docking seat, can be replaced separately, thereby avoiding material waste and reducing costs.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A high-pressure oil pipe joint with an anti-loosening structure, used to cooperate with an equipment interface (4), characterized in that: The high-pressure oil pipe joint comprises a joint body (1), an adjusting nut (2) and a docking seat (3), wherein the adjusting nut (2) is arranged between the joint body (1) and the docking seat (3), and the adjusting nut (2) and the docking seat (3) are sleeved on the joint body (1) in sequence, and the adjusting nut (2) and the docking seat (3) are slidably matched; and The first external thread (13) provided on the joint body (1) cooperates with the first internal thread (21) provided on the inner wall of the adjusting nut (2); the second external thread (33) provided on the docking seat (3) cooperates with the second internal thread (41) provided in the device interface (4), and the thread teeth of the first external thread (13) provided on the joint body (1) and the second external thread (33) provided on the docking seat (3) are arranged in opposite directions to each other.

2. The high-pressure oil pipe joint with an anti-loosening structure according to claim 1, characterized in that: The joint body (1) is a tubular structure, comprising a threaded section (11) and a sliding section (12); the threaded section (11) is provided with a first external thread (13); and one end of the sliding section (12) away from the threaded section (11) is connected to an oil pipe (6) via a metal sleeve (5).

3. The high-pressure oil pipe joint with an anti-loosening structure according to claim 2, characterized in that: The outer diameter of the threaded section (11) is consistent with the outer diameter of the sliding section (12).

4. The high-pressure oil pipe joint with an anti-loosening structure according to claim 3, characterized in that: The docking seat (3) comprises a retaining ring (31) and a docking nut (32) which are integrally arranged, the second external thread (33) being arranged on the outer wall of the docking nut (32), and the outer diameter of the retaining ring (31) being greater than the outer diameter of the docking nut (32).

5. The high-pressure oil pipe joint with an anti-loosening structure according to claim 4, characterized in that: The retaining ring (31) and the butt nut (32) are both hollow, the retaining ring (31) is provided with a first channel (311) for cooperating with the joint body (1), the butt nut (32) is provided with a second channel (321) for cooperating with the adjustment nut (2), the inner diameter of the first channel (311) is smaller than the inner diameter of the second channel (321), and the connection between the first channel (311) and the second channel (321) is provided with a flaring structure to form a flaring inclined surface (34).

6. The high-pressure oil pipe joint with an anti-loosening structure according to claim 5, characterized in that: The retaining ring (31) is slidably sleeved on the sliding section (12) of the joint body (1) through the first channel (311); the outer wall of the adjusting nut (2) is slidably matched with the inner wall of the second channel (321) of the docking nut (32).

7. The high-pressure oil pipe joint with an anti-loosening structure according to claim 5, characterized in that: The adjusting nut (2) is sleeved on the threaded section (11) of the joint body (1), and one end of the adjusting nut (2) that is movably engaged with the flaring inclined surface (34) is arranged as a cut surface (22).

8. A high-pressure oil pipe joint with an anti-loosening structure according to any one of claims 2 to 7, characterized in that: The oil outlet (14) at the front end of the threaded section (11) is configured as a tapered structure that gradually tightens outwards.

Images