High-pressure oil pipe with damping structure

Abstract

The utility model discloses a high-pressure oil pipe with a damping structure, belongs to the technical field of high-pressure oil pipes, and solves the problem that the high-pressure oil pipe is easy to crack due to no space for arranging pipe clamps at two ends of the traditional high-pressure oil pipe. The high-pressure oil pipe with the damping structure comprises a high-pressure oil pipe body and a nut, the high-pressure oil pipe body is movably inserted into the nut, a pier head is arranged at one end of the high-pressure oil pipe body, a gasket is arranged on the portion, on one side of the pier head, of the high-pressure oil pipe body in a sleeving mode, and a mounting hole is formed in one end of the nut. The high-pressure oil pipe body in the mounting hole is sleeved with a shock pad, the inner wall of the shock pad is attached to the outer wall of the high-pressure oil pipe body, the outer wall of the shock pad is attached to the inner wall of the mounting hole, and the end, close to the mounting hole, of the nut is in threaded connection with a shock pad pressing cap. According to the high-pressure oil pipe with the damping structure, the stability of the high-pressure oil pipe is improved, and the service life of the high-pressure oil pipe is effectively prolonged.

Description

Technical Field

[0001] This utility model relates to the field of high-pressure oil pipe technology, and more specifically, it relates to a high-pressure oil pipe with a shock-absorbing structure. Background Technology

[0002] High-pressure fuel lines are a crucial component of the engine's fuel system. Their primary function is to deliver fuel from the injection pump to the injectors under high pressure. High-pressure fuel lines typically operate at pressures between 1200 and 1800 bar. At this pressure, fuel is atomized into very fine particles, resulting in better air-fuel mixing and higher combustion efficiency. Therefore, the quality and performance of high-pressure fuel lines directly impact engine power, fuel economy, and emissions performance.

[0003] like Figure 1 As shown, traditional high-pressure oil pipes are oil pipes with end caps 6 at both ends. The end caps 6 are tightened onto the injection pump or injector by nuts 3 at both ends of the high-pressure oil pipe. The middle of the pipeline is fixed by pipe clamps to reduce vibration. However, due to space constraints, there is usually no space to place pipe clamps at both ends of the high-pressure oil pipe. The space between the outer wall of the high-pressure oil pipe body 1 and the inner wall of the nut 3 is small. When the high-pressure oil pipe body 1 vibrates, the outer wall of the high-pressure oil pipe body 1 is prone to direct contact and collision with the inner wall of the nut 3, which easily causes large vibrations at both ends of the high-pressure oil pipe (pump end and nozzle end), resulting in a high number of high-pressure oil pipe cracking failures. Utility Model Content

[0004] The technical problem to be solved by this utility model is to address the above-mentioned shortcomings of the prior art by providing a high-pressure oil pipe with a shock-absorbing structure. By adding shock-absorbing pads at both ends of the high-pressure oil pipe, the vibration of the high-pressure oil pipe at the pump end and the nozzle end is effectively reduced, the stability of the high-pressure oil pipe is improved, the failure of high-pressure oil pipe cracking is reduced, and the service life of the high-pressure oil pipe is effectively extended.

[0005] The technical solution of this utility model is as follows: a high-pressure oil pipe with a shock-absorbing structure includes a high-pressure oil pipe body and a nut. The high-pressure oil pipe body is movably inserted into the nut. One end of the high-pressure oil pipe body is provided with a head. A gasket is fitted on the high-pressure oil pipe body on one side of the head. One end of the nut is provided with a mounting hole. A shock-absorbing pad is fitted on the high-pressure oil pipe body inside the mounting hole. The inner wall of the shock-absorbing pad is in contact with the outer wall of the high-pressure oil pipe body. The outer wall of the shock-absorbing pad is in contact with the inner wall of the mounting hole. A shock-absorbing pad clamping cap is threaded to the end of the nut near the mounting hole.

[0006] As a further improvement, the top of the shock-absorbing pad is provided with a plurality of protrusions, which are installed at equal intervals on the top of the shock-absorbing pad, and each of the plurality of protrusions is provided with a through hole.

[0007] Furthermore, the cross-section of the through hole is elliptical, and the top of the through hole is provided with a groove.

[0008] Furthermore, the shock-absorbing pad clamping cap is provided with an annular clamping block, the lower end face of which contacts the upper end face of the protrusion.

[0009] Furthermore, the outer diameter of the annular clamping block is smaller than the diameter of the mounting hole, and the inner diameter of the annular clamping block is larger than the diameter of the high-pressure oil pipe body.

[0010] Beneficial effects

[0011] Compared with the prior art, this utility model has the following advantages:

[0012] 1. This utility model provides a high-pressure oil pipe with a shock-absorbing structure. By adding a shock-absorbing pad between the high-pressure oil pipe body and the nut, the vibration of the high-pressure oil pipe at the pump end and the nozzle end is effectively reduced, the stability of the high-pressure oil pipe is improved, the failure of high-pressure oil pipe cracking is reduced, and the service life of the high-pressure oil pipe is effectively extended.

[0013] 2. The present invention relates to a high-pressure oil pipe with a shock-absorbing structure. A protrusion is installed on the top of the shock-absorbing pad, and the operator can remove the shock-absorbing pad by means of tools such as hooks and wires, which facilitates the replacement of the shock-absorbing pad. Attached Figure Description

[0014] Figure 1 This is a cross-sectional structural diagram of the prior art;

[0015] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0016] Figure 3 This is an enlarged cross-sectional structural diagram of the protrusion in this utility model.

[0017] Among them: 1-high pressure oil pipe body, 2-washer, 3-nut, 4-shock damping pad, 5-shock damping pad clamping cap, 6-button head, 7-mounting hole, 8-protrusion, 9-through hole, 10-ring clamping block, 11-groove. Detailed Implementation

[0018] The present invention will be further described below with reference to specific embodiments shown in the accompanying drawings.

[0019] See Figures 2-3A high-pressure oil pipe with a shock-absorbing structure includes a high-pressure oil pipe body 1 and a nut 3. The high-pressure oil pipe body 1 is movably inserted into the nut 3. One end of the high-pressure oil pipe body 1 is provided with a head 6. A gasket 2 is fitted on one side of the high-pressure oil pipe body 1. One end of the nut 3 is provided with a mounting hole 7. A shock-absorbing pad 4 is fitted on the high-pressure oil pipe body 1 inside the mounting hole 7. The inner wall of the shock-absorbing pad 4 is in contact with the outer wall of the high-pressure oil pipe body 1, and the outer wall of the shock-absorbing pad 4 is in contact with the inner wall of the mounting hole 7. The shock-absorbing pad 4 is annular, and the inner wall surface of the inner circle of the shock-absorbing pad 4 is in contact with the high-pressure oil pipe body. The outer wall of the body 1 is tightly fitted, and the outer wall of the shock-absorbing pad 4 is tightly fitted with the inner wall of the nut 3, which has a shock-absorbing effect; and the shock-absorbing pad 4 can also play an auxiliary role in fixing the high-pressure oil pipe body 1; the end of the nut 3 near the mounting hole 7 is threaded with a shock-absorbing pad clamping cap 5; by adding the shock-absorbing pad 4 between the high-pressure oil pipe body 1 and the nut 3, the vibration of the high-pressure oil pipe body 1 at the pump end and the nozzle end is effectively reduced, the stability of the high-pressure oil pipe body 1 is improved, the failure of cracking of the high-pressure oil pipe body 1 is reduced, and the service life of the high-pressure oil pipe body 1 is effectively extended.

[0020] In this embodiment, the top of the shock-absorbing pad 4 is provided with multiple protrusions 8. The multiple protrusions 8 are installed at equal intervals on the top of the shock-absorbing pad 4. There are two protrusions 8 in total. The two protrusions 8 are symmetrically distributed on the top of the shock-absorbing pad 4 with the central axis of the shock-absorbing pad 4 as the center. When the shock-absorbing pad 4 is removed through the protrusions 8, the hooks on the two protrusions 8 can be pulled at the same time to prevent the shock-absorbing pad 4 from tilting during the removal process. In other embodiments, the number of protrusions 8 can be 4, 6, etc. Each of the multiple protrusions 8 is provided with a through hole 9. The operator can use tools such as wire or hook to hook the through hole 9, and then pull the wire or hook to directly remove the shock-absorbing pad 4, which is convenient for the operator to replace the shock-absorbing pad 4.

[0021] In this embodiment, the cross-section of the through hole 9 is elliptical, and the top of the through hole 9 is provided with a groove 11. The groove 11 is rectangular, and the central axis of the groove 11 coincides with the central axis of the through hole 9, so as to avoid the shock-absorbing pad 4 from shifting during the upward pulling process. After the worker hooks the through hole 9 with a hook or other tool, he pulls it upward with force so that the hook is located in the groove 11, which prevents the hook from slipping during the removal of the shock-absorbing pad 4, effectively improving the stability and efficiency of removing the shock-absorbing pad.

[0022] In this embodiment, the shock absorber pressure cap 5 is provided with an annular pressure block 10. The lower end face of the annular pressure block 10 contacts the upper end face of the protrusion 8. When the shock absorber pressure cap 5 is tightened, the annular pressure block 10 descends until it presses the shock absorber 4, so as to prevent the shock absorber 4 from moving when the oil pipe 1 vibrates, thus reducing the shock absorption effect.

[0023] In this embodiment, the outer diameter of the annular clamping block 10 is smaller than the diameter of the mounting hole 7, and the inner diameter of the annular clamping block 10 is larger than the diameter of the high-pressure oil pipe body 1, so as to avoid interference between the annular clamping block 10 on the damping pad clamping cap 5 and the high-pressure oil pipe body 1 and the nut 3 during the process of clamping the damping pad 4.

[0024] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present utility model. These modifications and improvements will not affect the effectiveness of the present utility model or the practicality of the patent.

Claims

1. A high-pressure oil pipe with a shock-absorbing structure, comprising a high-pressure oil pipe body (1) and a nut (3), wherein the high-pressure oil pipe body (1) is movably inserted into the nut (3), one end of the high-pressure oil pipe body (1) is provided with a head (6), and a gasket (2) is fitted on the high-pressure oil pipe body (1) on one side of the head (6), characterized in that, One end of the nut (3) is provided with a mounting hole (7). A shock-absorbing pad (4) is fitted on the high-pressure oil pipe body (1) inside the mounting hole (7). The inner wall of the shock-absorbing pad (4) is in contact with the outer wall of the high-pressure oil pipe body (1). The outer wall of the shock-absorbing pad (4) is in contact with the inner wall of the mounting hole (7). The end of the nut (3) near the mounting hole (7) is threaded with a shock-absorbing pad clamping cap (5).

2. A high-pressure oil pipe with a shock-absorbing structure according to claim 1, characterized in that, The top of the shock-absorbing pad (4) is provided with a plurality of protrusions (8), which are installed at equal intervals on the top of the shock-absorbing pad (4), and each of the plurality of protrusions (8) is provided with a through hole (9).

3. A high-pressure oil pipe with a shock-absorbing structure according to claim 2, characterized in that, The cross-section of the through hole (9) is elliptical, and the top of the through hole (9) is provided with a groove (11).

4. A high-pressure oil pipe with a shock-absorbing structure according to claim 2, characterized in that, The shock-absorbing pad compression cap (5) is provided with an annular compression block (10), and the lower end face of the annular compression block (10) is in contact with the upper end face of the protrusion (8).

5. A high-pressure oil pipe with a shock-absorbing structure according to claim 4, characterized in that, The outer diameter of the annular clamping block (10) is smaller than the diameter of the mounting hole (7), and the inner diameter of the annular clamping block (10) is larger than the diameter of the high-pressure oil pipe body (1).

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