CN117128370B - Engineering machinery explosion-proof hydraulic oil pipe - Google Patents
Engineering machinery explosion-proof hydraulic oil pipe Download PDFInfo
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- CN117128370B CN117128370B CN202311396897.XA CN202311396897A CN117128370B CN 117128370 B CN117128370 B CN 117128370B CN 202311396897 A CN202311396897 A CN 202311396897A CN 117128370 B CN117128370 B CN 117128370B
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- Prior art keywords
- oil
- pipe
- hydraulic oil
- pressure
- explosion
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- 239000010720 hydraulic oil Substances 0.000 title claims abstract description 90
- 239000003921 oil Substances 0.000 claims abstract description 237
- 238000010521 absorption reaction Methods 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 210000005077 saccule Anatomy 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 230000009172 bursting Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 5
- 238000011084 recovery Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/18—Double-walled pipes; Multi-channel pipes or pipe assemblies
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/07—Arrangement or mounting of devices, e.g. valves, for venting or aerating or draining
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Pipe Accessories (AREA)
Abstract
The invention relates to the field of hydraulic oil pipes, in particular to an explosion-proof hydraulic oil pipe of engineering machinery. The invention provides an explosion-proof hydraulic oil pipe of engineering machinery, which comprises a connecting end, a fixed pipe and the like. The fixed pipe, the outer folding pipe, the energy absorbing gasket and the inner oil pipe are sequentially arranged between the two connecting ends from outside to inside, the oil guiding pipe is arranged on the inner wall of the fixed pipe, when the pressure of hydraulic oil in the inner oil pipe rises, the energy absorbing gasket is matched with the outer folding pipe to absorb energy and reduce pressure of the hydraulic oil, before the hydraulic oil is about to reach a limit high-pressure state, the high-pressure hydraulic oil pushes the outer folding pipe to trigger the oil conveying plug assembly, part of the high-pressure hydraulic oil in the inner oil pipe is actively discharged outwards by the oil conveying plug assembly, and the explosion-proof pressure relief treatment of the high-pressure hydraulic oil is realized in time and directly from the inner oil pipe before the hydraulic oil is in the limit high-pressure state. The technical problem of the high-pressure oil pipe have the pressure resistance not enough and lead to bursting phenomenon when hydraulic oil is in the limit high-pressure state is solved.
Description
Technical Field
The invention relates to the field of hydraulic oil pipes, in particular to an explosion-proof hydraulic oil pipe of engineering machinery.
Background
In the working of engineering machinery, hydraulic oil with different pressures is required to be conveyed to complete corresponding operation actions of the engineering machinery, in order to improve the high-pressure-resistant and explosion-proof effects of the hydraulic oil, a material structure with high-pressure energy absorption effects is generally arranged in a hydraulic oil pipe, such as a leakage-proof and explosion-proof high-pressure oil pipe described in patent CN116398712B, and a material structure which expands along with the rising of the pressure of the hydraulic oil and has the pressure absorption effects is arranged in the hydraulic oil pipe, so that the critical high-pressure-resistant performance of the hydraulic oil pipe is effectively improved.
The hydraulic oil pipe is provided with a material structure with high-pressure energy absorption effect, so that the critical high-pressure resistance of the hydraulic oil pipe can be improved, but when the hydraulic oil in the hydraulic oil pipe is in a limit high-pressure state, the hydraulic oil pipe still has the phenomenon of bursting due to insufficient pressure resistance, even if the oil delivery end of the hydraulic oil pipe is connected with an explosion-proof pressure release valve in installation work, when the hydraulic oil in the hydraulic oil pipe instantaneously presents the limit high-pressure state, if the explosion-proof pressure release valve can not timely release the hydraulic oil, the explosion phenomenon can also occur to the hydraulic oil pipe.
Disclosure of Invention
The invention provides an explosion-proof hydraulic oil pipe of engineering machinery, which aims to overcome the defect that when hydraulic oil is in a limit high-pressure state, the high-pressure oil pipe has insufficient pressure resistance and is burst.
The technical scheme is as follows: an explosion-proof hydraulic oil pipe of engineering machinery comprises a connecting end, a fixed pipe, an oil guide pipe, an oil delivery plug assembly, an outer folded pipe, an energy absorption gasket and an inner oil pipe; a fixed pipe is fixedly connected between the two connecting ends; an oil guide pipe is arranged around the inner wall of the fixed pipe; an oil guiding cavity structure is arranged in the connecting end; the oil guide pipe is communicated with an oil guide cavity at the connecting end; an outer folding pipe is arranged at one side of the oil guide pipe away from the fixed pipe; the inner wall of the outer folding pipe is fixedly connected with an energy absorption gasket; an inner oil pipe is fixedly connected between the two connecting ends; the energy absorbing gasket is sleeved on the outer surface of the inner oil pipe; an oil delivery plug assembly is arranged on the oil delivery pipe; each oil conveying plug assembly is connected with the outer folded pipe, the energy absorbing gasket and the inner oil pipe.
Further, a clamping groove structure for clamping the oil guide pipe is arranged in the fixed pipe.
Further, the outer surface of the fixed pipe is wound with reinforcing ribs.
Further, the oil delivery plug assembly comprises a sliding rod, an oil outlet plug, an outer pressure spring and an oil delivery nozzle; a slide bar is fixedly connected in the oil guide pipe; an oil outlet plug is inserted at one side of the oil guide pipe close to the outer folding pipe; the oil outlet plug is connected with the sliding rod in a sliding way; an external pressure spring is fixedly connected between the oil guide pipe and the oil outlet plug; an oil through hole structure is arranged in the oil outlet plug; the oil outlet plug is provided with an oil outlet structure for connecting the oil through holes; the oil through hole of the oil outlet plug is communicated with an oil delivery nozzle; the oil delivery nozzle penetrates through the outer folding pipe, the energy absorption gasket and the inner oil pipe in sequence, and the outer folding pipe is fixedly connected with the oil delivery nozzle.
Further, a circle of inner folded pipe is arranged between the energy absorption gasket and the inner oil pipe.
Further, a wing plate structure is arranged on the n-shaped structure of the inner folded pipe, which is contacted with the energy absorption gasket.
Further, sealing sacculus corresponding to the oil delivery nozzles in number is arranged in the inner oil pipe; the oil delivery nozzle is inserted into the sealing saccule.
Further, a non-return valve is arranged on the connecting end; the oil guiding cavity at the connecting end is communicated with the oil storing cavity of the corresponding check valve; the inside of the check valve is plugged with a valve plug; an internal pressure spring is fixedly connected between the valve plug and the corresponding check valve.
Further, the inner bottoms of the check valves are respectively provided with a vertical cylinder communicated with the inside of the oil storage cavity.
Further, the outer surface of the fixed pipe is sleeved with a circle of outer sheath for protecting the reinforcing ribs.
The beneficial effects are that: according to the engineering machinery explosion-proof hydraulic oil pipe, a fixed pipe, an outer folding pipe, an energy absorption gasket and an inner oil pipe are sequentially arranged between two connecting ends from outside to inside, the inner wall of the fixed pipe is provided with the oil guide pipe, the oil guide pipe is communicated with an oil guide cavity of the connecting end, an oil delivery plug assembly communicated with the inner oil pipe is arranged on the oil guide pipe, when the pressure of hydraulic oil in the inner oil pipe rises, the outer folding pipe is matched with the energy absorption gasket to absorb energy and decompress the hydraulic oil, the high-pressure hydraulic oil pushes the outer folding pipe to trigger the oil delivery plug assembly before the hydraulic oil is about to reach a limit high-pressure state, part of the high-pressure hydraulic oil in the inner oil pipe is actively discharged outwards by the oil delivery plug assembly, and the explosion-proof treatment of the high-pressure hydraulic oil from the inner oil pipe is realized in time before the hydraulic oil is in the limit high-pressure state;
the engineering machinery explosion-proof hydraulic oil pipe solves the technical problem that when hydraulic oil is in a limit high-pressure state, the high-pressure oil pipe has insufficient pressure resistance and is burst.
Drawings
Fig. 1 is a schematic perspective view illustrating the structure of the present invention according to an embodiment;
FIG. 2 is a schematic perspective view illustrating a fixing tube and a reinforcing rib according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of a connection end depicting the present invention according to an embodiment;
FIG. 4 is a cross-sectional view of an inner oil tube depicting the present invention according to an embodiment;
FIG. 5 is a schematic perspective view illustrating an oil guide pipe and an outer folding pipe according to an embodiment of the present invention;
FIG. 6 is a schematic perspective view illustrating an oil delivery plug assembly according to an embodiment of the present invention;
FIG. 7 is a cross-sectional view of an oil plug depicting the present invention according to an embodiment;
fig. 8 is a cross-sectional view illustrating a check valve according to an embodiment of the present invention.
Reference numerals: 1-connecting end, 10-oil guiding cavity, 2-fixed pipe, 20-clamping groove, 21-reinforcing rib, 3-oil guiding pipe, 31-sliding rod, 32-oil outlet plug, 3201-oil through hole, 3202-oil outlet hole, 33-external pressure spring, 34-oil conveying nozzle, 35-sealing saccule, 4-external folding pipe, 5-energy absorbing gasket, 6-internal oil pipe, 61-internal folding pipe, 611-wing plate, 7-outer sheath, 8-check valve, 80-oil storage cavity, 81-valve plug, 82-internal pressure spring and 83-vertical cylinder.
Detailed Description
The invention will be further described with reference to examples of embodiments shown in the drawings.
Example 1
1-7, the engineering machinery explosion-proof hydraulic oil pipe comprises a connecting end 1, an oil guiding cavity 10, a fixed pipe 2, an oil guiding pipe 3, an oil conveying plug assembly, an outer folding pipe 4, an energy absorbing gasket 5 and an inner oil pipe 6; a fixed pipe 2 is fixedly connected between the two connecting ends 1; a plurality of oil guide pipes 3 are arranged around the inner wall of the fixed pipe 2; a clamping groove 20 structure which is matched with each oil guide pipe 3 is arranged in the fixed pipe 2; the oil guide pipe 3 is clamped in the fixed pipe 2 through the clamping groove 20; the outer surface of the fixed pipe 2 is wound with the reinforcing ribs 21, so that the bearing pressure of the fixed pipe 2 on high-pressure hydraulic oil is improved; an oil guiding cavity 10 structure is respectively arranged in the two connecting ends 1; both ends of all the oil guide pipes 3 are respectively communicated with oil guide cavities 10 of the corresponding connecting ends 1; an outer folding pipe 4 is arranged between one sides of all the oil guide pipes 3 far away from the fixed pipe 2, and the outer folding pipe 4 is formed by a plurality of n-shaped structures which are alternately arranged in the front-back direction in a surrounding way to form an elastic structure; the inner wall of the outer folding pipe 4 is fixedly connected with an energy absorption gasket 5; an inner oil pipe 6 is fixedly connected between the two connecting ends 1; the energy absorption gasket 5 is sleeved on the outer surface of the inner oil pipe 6; each oil guide pipe 3 is provided with a plurality of oil conveying plug assemblies; each oil conveying plug assembly is connected with the outer folded pipe 4, the energy absorbing gasket 5 and the inner oil pipe 6, and hydraulic oil in the inner oil pipe 6 can enter the oil conveying plug assemblies through the oil conveying plug assemblies.
As shown in fig. 4 to 7, the oil delivery plug assembly comprises a sliding rod 31, an oil outlet plug 32, an external pressure spring 33, an oil delivery nozzle 34 and a sealing balloon 35; a slide bar 31 is fixedly connected in the oil guide pipe 3; an oil outlet plug 32 is inserted into one side of the oil guide pipe 3 close to the outer folding pipe 4, and the oil outlet plug 32 is of a conical structure which is contracted towards one side close to the outer folding pipe 4; the oil outlet plug 32 is connected with the slide rod 31 in a sliding way; an outer pressure spring 33 is fixedly connected between the oil guide pipe 3 and the oil outlet plug 32, and the outer pressure spring 33 is sleeved on the outer surface of the slide rod 31; an oil through hole 3201 structure is arranged in the oil outlet plug 32; the outer surface of the oil outlet plug 32, which is closely attached to the oil guide pipe 3, is provided with a plurality of oil outlet hole 3202 structures communicated with the oil through holes 3201, so that the oil outlet holes 3202 are blocked by the oil guide pipe 3 initially; the oil delivery nozzle 34 is communicated with one end of the oil through hole 3201 of the oil outlet plug 32, which is close to the outer folding pipe 4; the oil delivery nozzle 34 penetrates through the outer folding pipe 4, the energy absorption gasket 5 and the inner oil pipe 6 in sequence, and the outer folding pipe 4 is fixedly connected with the oil delivery nozzle 34; the inner oil pipe 6 is internally provided with sealing sacculus 35 with the number corresponding to that of the oil delivery nozzles 34; each oil delivery nozzle 34 is respectively inserted with a corresponding sealing saccule 35, so that the phenomenon that the hydraulic oil leaks out from the gap between the inner oil pipe 6 and the oil delivery nozzle 34 due to the increase of the gap between the inner oil pipe 6 and the oil delivery nozzle 34 when the inner oil pipe 6 is expanded by high-pressure hydraulic oil is avoided.
As shown in fig. 1, the outer surface of the fixed tube 2 is sleeved with a circle of outer sheath 7 for protecting the reinforcing ribs 21, so that the reinforcing ribs 21 are wrapped by the outer sheath 7 and kept tightly stretched on the outer surface of the fixed tube 2.
The engineering machinery explosion-proof hydraulic oil pipe energy absorption and depressurization treatment work:
the two connecting ends 1 of the explosion-proof hydraulic oil pipe of the engineering machinery are externally connected to a hydraulic oil conveying system of the engineering machinery, the oil guiding cavities 10 of the two connecting ends 1 are externally connected with a waste oil recovery device, hydraulic oil flows through the inner oil pipe 6 through the two connecting ends 1, at the moment, part of hydraulic oil flowing through the inner oil pipe 6 is explosion-proof and flows into the oil through holes 3201 of the oil outlet plugs 32 through the oil delivery nozzles 34, and because the oil outlet plugs 32 are initially blocked in the oil guiding pipes 3, the hydraulic oil flowing into the oil through holes 3201 cannot flow into the oil guiding pipes 3 outwards through the oil outlet holes 3202.
When the hydraulic oil flowing through the inner oil pipe 6 rises rapidly, the hydraulic oil exerts outward expanding thrust on the inner oil pipe 6, the pipe diameter of the inner oil pipe 6 is expanded, meanwhile, the expanded inner oil pipe 6 exerts the received thrust on the energy-absorbing gasket 5 in all directions, the expansion of the energy-absorbing gasket 5 is limited by the outer folded pipe 4 wrapping the periphery of the energy-absorbing gasket 5, the energy-absorbing gasket 5 is compressed under the blocking of the outer folded pipe 4 after receiving the thrust from the inner oil pipe 6, and the compressed energy-absorbing gasket 5 actively absorbs and reduces the pressure of the hydraulic oil in the inner oil pipe 6.
The engineering machinery explosion-proof hydraulic oil pipe explosion-proof pressure relief treatment work comprises the following steps:
when the pressure of hydraulic oil flowing through the inner oil pipe 6 is increased instantaneously, the inner oil pipe 6 is expanded outwards by high-pressure hydraulic oil, the energy-absorbing gasket 5 is pushed to all directions simultaneously by the high-pressure hydraulic oil expanded inner oil pipe 6, the energy-absorbing gasket 5 carries out energy-absorbing depressurization treatment on the high-pressure hydraulic oil, when the energy-absorbing gasket 5 is compressed to a limit state, the energy-absorbing gasket 5 can not absorb energy and depressurize the high-pressure hydraulic oil, at the moment, the continuously expanded inner oil pipe 6 pushes the energy-absorbing gasket 5 to drive the outer folded pipe 4 to expand to all directions, meanwhile, the outwardly expanded outer folded pipe 4 drives the oil delivery nozzle 34 to move along the sealing balloon 35 towards the direction close to the sliding rod 31, the oil delivery nozzle 34 drives the oil outlet plug 32 to compress the outer pressure spring 33, the oil outlet 3202 of the oil outlet plug 32 is not blocked by the oil guide pipe 3, at the moment, part of the high-pressure hydraulic oil in the inner oil pipe 6 enters the oil guide pipe 3 through the oil delivery nozzle 34, the high-pressure hydraulic oil in the oil guide pipe 3 flows out to an externally connected waste oil recovery device through the oil guide cavity 10, and before the hydraulic oil reaches the limit state, the hydraulic oil actively discharges part of the hydraulic oil from the inner oil pipe 6 to the high-pressure in a high-pressure state in time, and the high-pressure is directly discharged from the high-pressure oil pipe 6 in a timely state.
Example 2
As shown in fig. 1 to 7, on the basis of embodiment 1, a ring of inner folded tube 61 is arranged between the energy absorption gasket 5 and the inner oil tube 6, and the inner folded tube 61 is formed by surrounding a plurality of n-shaped structures which are alternately arranged in opposite directions to form an elastic structure; the initial stage of increasing the pressure of the hydraulic oil in the inner oil pipe 6 provides a circumferential support for the inner oil pipe 6 after the expansion by the elastic structure of the inner folded pipe 61, so that the inner oil pipe 6 is uniformly expanded along the diameter direction; the n-shaped structure of the inner folded pipe 61 and the energy-absorbing gasket 5 is also provided with a wing plate 611 structure, so that the contact area of the inner folded pipe 61 and the energy-absorbing gasket 5 is increased, when the inner oil pipe 6 is enlarged by high-pressure hydraulic oil and uniformly expands along the diameter direction, the inner oil pipe 6 uniformly extrudes the energy-absorbing gasket 5 along the diameter direction through the inner folded pipe 61 and the wing plate 611 structure thereof, the energy-absorbing gasket 5 can be synchronously compressed along the diameter direction, and meanwhile, the energy-absorbing gasket 5 performs energy-absorbing and pressure-reducing treatment on the inner oil pipe 6, so that the energy-absorbing and pressure-reducing effect of the energy-absorbing gasket 5 on the inner oil pipe 6 through the inner folded pipe 61 is effectively increased.
Example 3
As shown in fig. 1 to 8, on the basis of embodiment 2, one check valve 8 is mounted on each of the two connection terminals 1 of this embodiment; the oil guiding cavity 10 of the connecting end 1 is communicated with the oil storing cavity 80 of the corresponding check valve 8; each of the two non-return valves 8 is internally plugged with a valve plug 81; an inner pressure spring 82 is fixedly connected between the valve plug 81 and the corresponding check valve 8, and the valve plug 81 is tightly plugged above the oil storage cavity 80 under the downward compression thrust of the inner pressure spring 82; the inner bottoms of the two check valves 8 are respectively provided with a vertical cylinder 83 communicated with the inside of the oil storage cavity 80, so that a large amount of backflow of hydraulic oil entering the oil storage cavity 80 is not easy to occur under the blocking of the vertical cylinders 83, and the pollution of the hydraulic oil flowing backwards to the hydraulic oil in the inner oil pipe 6 is reduced.
The oil guiding cavities 10 of the two connecting ends 1 are externally connected with a waste oil recovery device through the check valve 8, when hydraulic oil flowing through the inner oil pipe 6 is pressurized in a short time, the hydraulic oil flowing out of the inner oil pipe 6 through the oil conveying plug assembly and the oil guiding pipe 3 directly enters the oil storing cavity 80 through the oil guiding cavity 10, and the oil storing cavity 80 is in a closed state initially, so that the hydraulic oil flowing into the oil storing cavity 80 is not easy to pollute the external environment, when the hydraulic oil flowing through the inner oil pipe 6 is in a pressurized state for a long time, the hydraulic oil continuously flows out of the oil storing cavity 80 through the oil conveying plug assembly and the oil guiding pipe 3, along with the increase of the hydraulic oil in the oil storing cavity 80, the pressure of the hydraulic oil in the oil storing cavity 80 is also increased, the pressurized hydraulic oil in the oil storing cavity 80 pushes the inner pressure spring 82 to be compressed upwards, and after the valve plug 81 is jacked upwards, the hydraulic oil in the oil storing cavity 80 can outwards flow into the externally connected waste oil recovery device.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted equally without departing from the spirit and scope of the technical solution of the present invention.
Claims (7)
1. An explosion-proof hydraulic oil pipe of engineering machinery, comprising: a connection end (1);
a fixed pipe (2) is fixedly connected between the two connecting ends (1);
it is characterized by also comprising an oil guide pipe (3);
an oil guide pipe (3) is arranged around the inner wall of the fixed pipe (2); an oil guiding cavity (10) structure is arranged in the connecting end (1); the oil guide pipe (3) is communicated with an oil guide cavity (10) of the connecting end (1); an outer folding pipe (4) is arranged at one side of the oil guide pipe (3) far away from the fixed pipe (2); an energy-absorbing gasket (5) is fixedly connected to the inner wall of the outer folding pipe (4); an inner oil pipe (6) is fixedly connected between the two connecting ends (1); the energy-absorbing gasket (5) is sleeved on the outer surface of the inner oil pipe (6); an oil delivery plug assembly is arranged on the oil delivery pipe (3); each oil conveying plug assembly is connected with an outer folding pipe (4), an energy absorbing gasket (5) and an inner oil pipe (6);
the oil delivery plug assembly comprises a sliding rod (31);
a sliding rod (31) is fixedly connected in the oil guide pipe (3); an oil outlet plug (32) is inserted at one side of the oil guide pipe (3) close to the outer folding pipe (4); the oil outlet plug (32) is connected with the sliding rod (31) in a sliding way; an outer compression spring (33) is fixedly connected between the oil guide pipe (3) and the oil outlet plug (32); an oil through hole (3201) structure is arranged in the oil outlet plug (32); an oil outlet hole (3202) structure for connecting the oil through hole (3201) is formed in the oil outlet plug (32); an oil delivery nozzle (34) is communicated with the oil through hole (3201) of the oil outlet plug (32); the oil delivery nozzle (34) penetrates through the outer folding pipe (4), the energy absorption gasket (5) and the inner oil pipe (6) in sequence, and the outer folding pipe (4) is fixedly connected with the oil delivery nozzle (34);
a non-return valve (8) is arranged on the connecting end (1); an oil guiding cavity (10) of the connecting end (1) is communicated with an oil storing cavity (80) of the corresponding check valve (8); the inside of the check valve (8) is plugged with a valve plug (81); an internal pressure spring (82) is fixedly connected between the valve plug (81) and the corresponding check valve (8);
the inner bottoms of the check valves (8) are respectively provided with a vertical cylinder (83) communicated with the inside of the oil storage cavity (80).
2. The engineering machinery explosion-proof hydraulic oil pipe according to claim 1, wherein the fixed pipe (2) is internally provided with a clamping groove (20) structure for clamping the oil guide pipe (3).
3. An explosion-proof hydraulic oil pipe for engineering machinery according to claim 1, characterized in that the outer surface of the fixed pipe (2) is wound with reinforcing ribs (21).
4. An explosion-proof hydraulic oil pipe for engineering machinery according to claim 1, wherein a circle of inner folded pipe (61) is arranged between the energy absorbing gasket (5) and the inner oil pipe (6).
5. The explosion-proof hydraulic oil pipe for engineering machinery according to claim 4, wherein a wing plate (611) structure is further arranged on the n-shaped structure of the inner folded pipe (61) contacted with the energy absorption gasket (5).
6. The engineering machinery explosion-proof hydraulic oil pipe according to claim 1, wherein sealing balloons (35) corresponding to the number of the oil delivery nozzles (34) are arranged inside the inner oil pipe (6); the oil delivery nozzle (34) is inserted into the sealing saccule (35).
7. An explosion-proof hydraulic oil pipe for engineering machinery according to claim 3, characterized in that the outer surface of the fixed pipe (2) is sleeved with a circle of outer sheath (7) for protecting the reinforcing ribs (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311396897.XA CN117128370B (en) | 2023-10-26 | 2023-10-26 | Engineering machinery explosion-proof hydraulic oil pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311396897.XA CN117128370B (en) | 2023-10-26 | 2023-10-26 | Engineering machinery explosion-proof hydraulic oil pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117128370A CN117128370A (en) | 2023-11-28 |
| CN117128370B true CN117128370B (en) | 2024-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311396897.XA Active CN117128370B (en) | 2023-10-26 | 2023-10-26 | Engineering machinery explosion-proof hydraulic oil pipe |
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| Country | Link |
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| CN (1) | CN117128370B (en) |
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| CN108679329A (en) * | 2018-05-30 | 2018-10-19 | 石亮亮 | Spliced drainage pipeline |
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| CN215111285U (en) * | 2021-07-22 | 2021-12-10 | 嘉兴林鑫管业科技股份有限公司 | High-strength double-layer shock-resistant corrugated pipe |
| CN116398712A (en) * | 2023-06-08 | 2023-07-07 | 太仓濂辉液压器材有限公司 | Leak-proof explosion-proof high-pressure oil pipe |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08124541A (en) * | 1994-10-21 | 1996-05-17 | Minoru Nishibori | Explosion-proof double wall tube |
-
2023
- 2023-10-26 CN CN202311396897.XA patent/CN117128370B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208152197U (en) * | 2018-04-16 | 2018-11-27 | 温岭市兴扬环境建设有限公司 | The explosion-proof drainpipe of municipal works |
| CN108679329A (en) * | 2018-05-30 | 2018-10-19 | 石亮亮 | Spliced drainage pipeline |
| CN210978822U (en) * | 2019-11-28 | 2020-07-10 | 重庆市荣昌区华翼机械制造有限公司 | Direct-connection type threaded joint for casing |
| CN213271174U (en) * | 2020-07-06 | 2021-05-25 | 合肥潜望镜机械科技有限公司 | Explosion-proof pipeline |
| CN215111285U (en) * | 2021-07-22 | 2021-12-10 | 嘉兴林鑫管业科技股份有限公司 | High-strength double-layer shock-resistant corrugated pipe |
| CN116398712A (en) * | 2023-06-08 | 2023-07-07 | 太仓濂辉液压器材有限公司 | Leak-proof explosion-proof high-pressure oil pipe |
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| Publication number | Publication date |
|---|---|
| CN117128370A (en) | 2023-11-28 |
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