CN218708827U - Oil drainage stopping device for hydraulic jack - Google Patents

Abstract

The utility model belongs to the field of hydraulic jacks, in particular to an oil drainage stopping device for a hydraulic jack, which comprises a hydraulic device body, a first moving column, an oil drainage column, a first liquid storage column, a second moving column, a first lifting plate, a second lifting plate and a stop plate; the top of the hydraulic device body is communicated with a first moving column; the inner side of the first movable column is connected with an oil drainage column in a sliding manner; when the hydraulic oil replenishing device works, the closing plate moves to make hydraulic oil in the first liquid storage column replenish hydraulic oil in the first flow guide pipe, the second flow guide pipe and the third flow guide pipe; the integral device improves the cutting-off effect of filling hydraulic oil in the first lifting plate and the second lifting plate; the integrated device reduces the defect that the closed effect is poor due to the fact that the closed plate is used for a long time, the closed effect of the closed plate is poor on hydraulic oil inside the first liquid storage column and liquid oil between the closed plate and the oil discharging column, and finally the situation that the hydraulic lifting effect of the integrated device is poor occurs.

Description

Oil drainage stopping device for hydraulic jack

Technical Field

The utility model relates to a hydraulic jack field specifically is a fuel drainage stop device for hydraulic jack.

Background

The hydraulic jack is a continuous increase of oil pressure through the inside of the oil cylinder, so that an article needing to be lifted at the top moves upwards, when the jack is used, a flat ground needs to be selected, and the condition that the article falls off is reduced.

In the prior art, an oil discharge stopping device for a hydraulic jack is composed of a hydraulic jack body and a hydraulic oil stopping device, and is often used for preventing the hydraulic oil inside the hydraulic jack from flowing back.

The existing oil drainage cut-off device for the hydraulic jack is poor in closing effect caused by long-time use of a closing plate in work, so that the closing plate is poor in closing effect on hydraulic oil inside a first liquid storage column and the liquid oil between the closing plate and an oil drainage column, the hydraulic lifting effect of the whole device is poor finally, and therefore the oil drainage cut-off device for the hydraulic jack is provided aiming at the problems.

SUMMERY OF THE UTILITY MODEL

In order to remedy prior art's not enough, thereby solve and lead to the relatively poor closed effect to make the closed plate close the effect unsatisfactory to the hydraulic oil between the inside hydraulic oil of first stock solution post and closed plate and the oil extraction post because of the closed plate uses for a long time, finally make the relatively poor problem of integrated device hydraulic pressure lifting effect, the utility model provides a device ends in the oil drain for hydraulic jack.

The utility model provides a technical scheme that its technical problem adopted is: the utility model relates to an oil drain cut-off device for a hydraulic jack, which comprises a hydraulic device body, a first movable column, an oil drainage column, a first liquid storage column, a second movable column, a first lifting plate, a second lifting plate and a barrier plate; the top of the hydraulic device body is communicated with a first moving column; the inner side of the first movable column is connected with an oil drainage column in a sliding manner; a first liquid storage column is fixedly connected to one side, far away from the first moving column, of the top of the hydraulic device body; the top of the hydraulic device body is communicated with a second moving column; the inner side of the second moving column is connected with a first lifting plate in a sliding manner; a second lifting plate is fixedly connected to the top of the first lifting plate; the top of the hydraulic device body is fixedly connected with a blocking plate; the blocking plate is arranged on one side of a communication position between the second moving column and the hydraulic device body; the top of the hydraulic device body is provided with a diversion trench; the flow guide groove is formed in the inner side of the first liquid storage column; a first guide pipe is fixedly connected to the top of the inner side of the hydraulic device body; the top of the first flow guide pipe is communicated with the inner side of the flow guide groove; a second guide pipe is fixedly connected to the top of the inner side of the hydraulic device body; the bottom of the inner side of the first flow guide pipe is communicated with the top of the inner side of the second flow guide pipe; the oil discharging column is connected with the inner side of the communication part of the first guide pipe and the second guide pipe in a sliding way; the top of the second flow guide pipe is communicated with a third flow guide pipe; the top of the third flow guide pipe is communicated with the inner side of the second moving column; a closing plate is fixedly connected to the top of the inner side of the first flow guide pipe; the bottom of the closed plate is contacted with the inner side bottom of the first flow guide pipe; a first extrusion column is fixedly connected to one side of the closed plate close to the oil discharge column; a second extrusion column is fixedly connected to one side of the oil drainage column, which is close to the first extrusion column; and the side walls of the second extrusion column and the first extrusion column, which are close to each other, are fixedly connected with first magnetic soft plates.

Preferably, a fourth guide pipe is fixedly connected to the top of the second movable column; the top of the fourth flow guide pipe is fixedly connected with the top of the inner side of the first liquid storage column; the inner side of the fourth flow guide pipe is in contact with the outer side of the oil discharge column; a second liquid storage column is communicated with one side of the fourth flow guide pipe, which is far away from the oil discharge column; the second liquid storage column is arranged on the outer side of the first liquid storage column; a scraping and rubbing plate is fixedly connected to the top of the inner side of the first liquid storage column; the scraping plate is arranged on the inner side of the fourth flow guide pipe; and the side wall of one side of the fourth flow guide pipe, which is far away from the second liquid storage column, is in contact with the outer side of the oil discharge column.

Preferably, two side walls of the inner side of the third flow guide pipe are fixedly connected with elastic soft plates; a second magnetic soft board is fixedly connected to the side wall of one side, close to each other, of the pair of elastic soft boards; and a third magnetic soft plate is fixedly connected to the bottom of the blocking plate.

Preferably, the side wall of the elastic soft plate is provided with a plurality of groups of flow guide holes.

Preferably, the bottom end of the outer side of the oil drainage column is fixedly connected with a liquid drainage plate; the outer side of the liquid discharge plate is in mutual contact with the joint of the first flow guide pipe and the second flow guide pipe.

Preferably, a sealing plate is fixedly connected to the outer side wall of the oil drainage column; the sealing plate is arranged on the inner side of the first movable column.

The utility model discloses an useful part lies in:

1. the utility model discloses a set up hydraulic means body, first removal post, oil drainage post, first stock solution post, second removal post, first lifting plate, second lifting plate, barrier plate, guiding gutter, first honeycomb duct, second honeycomb duct, third honeycomb duct, closure plate, first extrusion post, first magnetic force soft board, second extrusion post, during operation, the inboard hydraulic oil of first honeycomb duct, second honeycomb duct, third honeycomb duct no longer packs the inboard of second removal post, barrier plate keeps away from oil drainage post one end and moves to hydraulic means body top and makes the inboard of second removal post and hydraulic means body top be in the encapsulated situation; the oil drainage column moves to drive the second extrusion column to move together; when the second extrusion column passes through the first magnetic soft plate and the first extrusion column, the bottom end of the closing plate moves towards the direction of the oil discharge column; the closing plate moves to enable hydraulic oil in the first liquid storage column to supplement hydraulic oil in the first flow guide pipe, the second flow guide pipe and the third flow guide pipe; the integral device improves the cutting-off effect of filling hydraulic oil in the first lifting plate and the second lifting plate; the integrated device reduces the defect that the closed effect is poor due to the fact that the closed plate is used for a long time, the closed effect of the closed plate is poor on hydraulic oil inside the first liquid storage column and liquid oil between the closed plate and the oil discharging column, and finally the situation that the hydraulic lifting effect of the integrated device is poor occurs.

2. The utility model is provided with the fourth flow guide pipe, the second liquid storage column and the scraping plate, when in work, a worker pours lubricating oil into the fourth flow guide pipe from the inner side of the second liquid storage column to the inner side of the fourth flow guide pipe; when the first lifting plate moves upwards, the scraping plate is close to the side wall of one side of the first lifting plate to paint lubricating oil on the outer side of the first lifting plate; the integral device improves the stability of the first lifting plate when the first lifting plate moves on the inner side of the second moving column and the inner side of the top of the first liquid storage column; the whole device improves the hydraulic lifting effect of the hydraulic device body.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram according to a first embodiment;

FIG. 2 is a schematic view of the inner structure of the first embodiment;

FIG. 3 is an enlarged view of FIG. 2 at A;

FIG. 4 is a schematic diagram illustrating an internal structure according to the first embodiment;

FIG. 5 is an enlarged view of FIG. 4 at B;

FIG. 6 is an enlarged view at C of FIG. 4;

fig. 7 is a schematic structural diagram of the second embodiment.

In the figure: 1. a hydraulic device body; 11 a first moving column; 12. oil drainage columns; 13. a first liquid storage column; 14. a second moving column; 15. a first lifting plate; 16. a second lifting plate; 17. a blocking plate; 18. a diversion trench; 19. a first draft tube; 110. a second draft tube; 111. a third draft tube; 112. a closing plate; 113. a first extrusion column; 114. a first magnetic soft board; 115. a second extrusion column; 2. a fourth draft tube; 21. a second reservoir column; 22. a scraping plate; 3. an elastic soft board; 31. a second magnetic soft board; 32. a third magnetic soft board; 4. a flow guide hole; 5. a drainage plate; 6. a sealing plate; 7. a baffle.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example one

Referring to fig. 1-6, an oil discharge stopping device for a hydraulic jack includes a hydraulic device body 1, a first movable column 11, an oil discharge column 12, a first liquid storage column 13, a second movable column 14, a first lifting plate 15, a second lifting plate 16, and a blocking plate 17; the top of the hydraulic device body 1 is communicated with a first moving column 11; the inner side of the first movable column 11 is connected with an oil drainage column 12 in a sliding manner; a first liquid storage column 13 is fixedly connected to one side, far away from the first moving column 11, of the top of the hydraulic device body 1; the top of the hydraulic device body 1 is communicated with a second movable column 14; a first lifting plate 15 is connected to the inner side of the second moving column 14 in a sliding manner; a second lifting plate 16 is fixedly connected to the top of the first lifting plate 15; the top of the hydraulic device body 1 is fixedly connected with a stop plate 17; the blocking plate 17 is arranged on one side of the communication position of the second moving column 14 and the hydraulic device body 1; the top of the hydraulic device body 1 is provided with a diversion trench 18; the diversion trench 18 is arranged on the inner side of the first liquid storage column 13; a first guide pipe 19 is fixedly connected to the top of the inner side of the hydraulic device body 1; the top of the first draft tube 19 is communicated with the inner side of the draft groove 18; the top of the inner side of the hydraulic device body 1 is fixedly connected with a second guide pipe 110; the bottom of the inner side of the first guide pipe 19 is communicated with the top of the inner side of the second guide pipe 110; the oil discharging column 12 is connected inside the communication part of the first guide pipe 19 and the second guide pipe 110 in a sliding way; the top of the second guide pipe 110 is communicated with a third guide pipe 111; the top of the third guide pipe 111 is communicated with the inner side of the second moving column 14; a closing plate 112 is fixedly connected to the top of the inner side of the first flow guide pipe 19; the bottom of the closing plate 112 is in contact with the bottom of the inner side of the first flow guide pipe 19; a first extrusion column 113 is fixedly connected to one side of the closed plate 112 close to the oil discharge column 12; a second extrusion column 115 is fixedly connected to one side of the oil drainage column 12 close to the first extrusion column 113; when the first magnetic soft board 114 is fixedly connected to the side wall of the second extrusion column 115 and the first extrusion column 113 close to each other, the blocking board 17 and the closing board 112 are made of elastic materials; the first magnetic soft board 114 and the second extrusion column 115 are mutually attracted due to the magnetic materials of the first magnetic soft board and the second extrusion column; the worker moves the oil discharging column 12 to the bottom of the inner side of the second guide pipe 110 through the inner side of the first moving column 11; the oil discharging column 12 moves to push hydraulic oil in the first guide pipe 19, the second guide pipe 110 and the third guide pipe 111 to pass through the inner sides of the second guide pipe 110 and the third guide pipe 111, so that the blocking plate 17 moves upwards, after liquid oil enters the inner side of the second moving column 14, the first lifting plate 15 moves downwards through the second moving column 14, and the first lifting plate 15 moves to drive the second lifting plate 16 to lift the bottom of the device to be lifted; when the oil drainage column 12 moves downwards, the second extrusion column 115 moves downwards to extrude the first extrusion column 113 in the direction away from the oil drainage column 12 through the first magnetic soft plate 114, the first extrusion column 113 moves in the direction away from the oil drainage column 12 to enable the closing plate 112 to be in contact with the bottom of the inner side of the first guide pipe 19, and the closing plate 112 seals hydraulic oil in the first liquid storage column 13 and liquid oil between the closing plate 112 and the oil drainage column 12; the worker operates the oil discharging column 12 to move upwards, the hydraulic oil inside the first flow guide pipe 19, the second flow guide pipe 110 and the third flow guide pipe 111 does not fill the inside of the second moving column 14 any more, and one end, far away from the oil discharging column 12, of the blocking plate 17 moves towards the top of the hydraulic device body 1 to enable the inside of the second moving column 14 and the top of the hydraulic device body 1 to be in a closed state; the oil drainage column 12 moves to drive the second extrusion column 115 to move together; when the second extrusion column 115 passes through the first magnetic soft plate 114 and the first extrusion column 113, the bottom end of the closing plate 112 moves towards the oil drain column 12; the closing plate 112 moves to make the hydraulic oil in the first liquid storage column 13 supplement the hydraulic oil to the interiors of the first flow guide pipe 19, the second flow guide pipe 110 and the third flow guide pipe 111; the integral device improves the cutting-off effect of filling the hydraulic oil into the first lifting plate 15 and the second lifting plate 16; the whole device reduces the situation that the closing plate 112 has poor closing effect on hydraulic oil in the first liquid storage column 13 and liquid oil between the closing plate 112 and the oil discharge column 12 due to the fact that the closing plate 112 is used for a long time, and finally the hydraulic lifting effect of the whole device is poor.

The utility model further provides that a fourth guide pipe 2 is fixedly connected to the top of the second movable column 14; the top of the fourth flow guide pipe 2 is fixedly connected with the top of the inner side of the first liquid storage column 13; the inner side of the fourth draft tube 2 is contacted with the outer side of the oil discharge column 12; a second liquid storage column 21 is communicated with one side of the fourth guide pipe 2, which is far away from the oil drainage column 12; the second liquid storage column 21 is arranged outside the first liquid storage column 13; a scraping plate 22 is fixedly connected to the top of the inner side of the first liquid storage column 13; the scraping plate 22 is arranged on the inner side of the fourth flow guide pipe 2; the side wall of one side of the fourth guide pipe 2, which is far away from the second liquid storage column 21, is contacted with the outer side of the oil discharge column 12; when the device works, the fourth guide pipe 2 and the scraping plate 22 are made of elastic materials, and lubricating oil is poured into the fourth guide pipe 2 by a worker through the inner side of the second liquid storage column 21 to the inner side of the fourth guide pipe 2; when the first lifting plate 15 moves upwards, the scraping plate 22 is close to the side wall of one side of the first lifting plate 15 to paint lubricating oil on the outer side of the first lifting plate 15; the integral device improves the stability of the first lifting plate 15 when moving inside the second moving column 14 and the top of the first liquid storage column 13; the whole device improves the hydraulic lifting effect of the hydraulic device body 1.

The embodiment of the present invention further provides that two side walls inside the third flow guiding pipe 111 are fixedly connected with the elastic soft plates 3; a second magnetic soft board 31 is fixedly connected to the side wall of one side of each elastic soft board 3, which is close to each other; the bottom of the blocking plate 17 is fixedly connected with a third magnetic soft plate 32; when the magnetic soft board works, the elastic soft board 3 is made of elastic materials, and the second magnetic soft board 31 and the third magnetic soft board 32 are mutually repelled due to magnetic force; the hydraulic oil inside the third flow tube 111 is pressed toward the inside of the second moving column 14; one ends of the pair of elastic soft plates 3, which are close to each other, are also extruded and moved to the direction of the stop plate 17 by the hydraulic oil inside the third flow guide pipe 111; the flexible soft board 3 moves to drive the second magnetic soft board 31 to move together, so that the 321 and the second magnetic soft board 31 repel each other due to magnetic force; the second magnetic soft plate 31 and the third magnetic soft plate 32 improve the effect that one end of the blocking plate 17 far away from the oil drainage column 12 is lifted upwards; the integral device improves the stability of the first lifting plate 15 and the second lifting plate 16 when the lifting plates are lifted upwards.

The utility model further provides that a plurality of groups of flow guide holes 4 are arranged on the side wall of the elastic soft plate 3; when the hydraulic oil pump works, the hydraulic oil on the inner side of the third flow guide pipe 111 extrudes the blocking plate 17 through the flow guide holes 4; the whole device reduces the occurrence of the situation that the inner side of the third flow guide pipe 111 is blocked by the inner structure of the third flow guide pipe 111 to pass through the hydraulic oil.

The utility model further provides that the bottom end of the outer side of the oil drainage column 12 is fixedly connected with a liquid drainage plate 5; the outer side of the drainage plate 5 is in contact with the joint of the first draft tube 19 and the second draft tube 110; when the lifting device works, the drainage plate 5 is made of elastic materials, and the drainage plate 5 extrudes hydraulic oil on the inner side of the communication position of the first guide pipe 19 and the second guide pipe 110, so that the moving effect of upward lifting of the first lifting plate 15 and the second lifting plate 16 is improved for the whole device.

The utility model further provides that a sealing plate 6 is fixedly connected to the outer side wall of the oil drainage column 12; the sealing plate 6 is arranged on the inner side of the first moving column 11; during operation, the sealing plate 6 is made of an elastic material, and the sealing plate 6 reduces the occurrence of the situation that the hydraulic oil in the first and second flow guide pipes 19 and 110 is discharged to the outside through the space between the first movable column 11 and the oil discharge column 12.

Example two

Referring to fig. 7, in a first comparative example, as another embodiment of the present invention, a flow guide plate 7 is fixedly connected to a side wall of an inner side of the second flow guide pipe 110, which is far away from the oil drainage column 12; when the hydraulic oil guiding device works, the guide plate 7 guides the hydraulic oil passing through the inner side of the second guide pipe 110 to the inner side of the third guide pipe 111; the whole device improves the circulation effect of the hydraulic oil inside the second flow guide pipe 110.

The working principle is as follows: when the device works, the blocking plate 17 and the closing plate 112 are made of elastic materials; the first magnetic soft board 114 and the second extrusion column 115 are mutually attracted due to the magnetic materials of the first magnetic soft board and the second extrusion column; the worker moves the oil discharging column 12 to the bottom of the inner side of the second guide pipe 110 through the inner side of the first moving column 11; the oil discharge column 12 moves to push hydraulic oil in the first guide pipe 19, the second guide pipe 110 and the third guide pipe 111 to pass through the inner sides of the second guide pipe 110 and the third guide pipe 111, so that the barrier plate 17 moves upwards, after liquid oil enters the inner side of the second moving column 14, the first lifting plate 15 moves downwards through the second moving column 14, and the first lifting plate 15 moves to drive the second lifting plate 16 to lift the bottom of the device to be lifted; when the oil drainage column 12 moves downwards, the second extrusion column 115 moves downwards to extrude the first extrusion column 113 in the direction away from the oil drainage column 12 through the first magnetic soft plate 114, the first extrusion column 113 moves in the direction away from the oil drainage column 12 to enable the closing plate 112 to be in contact with the bottom of the inner side of the first guide pipe 19, and the closing plate 112 seals hydraulic oil in the first liquid storage column 13 and liquid oil between the closing plate 112 and the oil drainage column 12; the worker operates the oil discharging column 12 to move upwards, the hydraulic oil inside the first flow guide pipe 19, the second flow guide pipe 110 and the third flow guide pipe 111 does not fill the inside of the second moving column 14 any more, and one end, far away from the oil discharging column 12, of the blocking plate 17 moves towards the top of the hydraulic device body 1 to enable the inside of the second moving column 14 and the top of the hydraulic device body 1 to be in a closed state; the oil drainage column 12 moves to drive the second extrusion column 115 to move together; when the second extrusion column 115 passes through the first magnetic soft plate 114 and the first extrusion column 113, the bottom end of the closing plate 112 moves towards the oil drain column 12; the closing plate 112 moves to make the hydraulic oil in the first liquid storage column 13 supplement the hydraulic oil to the interiors of the first flow guide pipe 19, the second flow guide pipe 110 and the third flow guide pipe 111; the integral device improves the cutting-off effect of filling the hydraulic oil into the first lifting plate 15 and the second lifting plate 16; the situation that the closing plate 112 has poor closing effect on hydraulic oil in the first liquid storage column 13 and liquid oil between the closing plate 112 and the oil discharge column 12 due to the fact that the closing plate 112 is used for a long time is reduced, and finally the hydraulic lifting effect of the whole device is poor is caused; when the device works, the fourth guide pipe 2 and the scraping plate 22 are made of elastic materials, and a worker pours lubricating oil into the fourth guide pipe 2 from the inner side of the second liquid storage column 21 to the inner side of the fourth guide pipe 2; when the first lifting plate 15 moves upwards, the scraping plate 22 is close to the side wall of one side of the first lifting plate 15 to paint lubricating oil on the outer side of the first lifting plate 15; the integral device improves the stability of the first lifting plate 15 when moving inside the second moving column 14 and the top of the first liquid storage column 13; the integral device improves the hydraulic lifting effect of the hydraulic device body 1; when the magnetic soft board works, the elastic soft board 3 is made of elastic materials, and the second magnetic soft board 31 and the third magnetic soft board 32 are mutually repelled due to magnetic force; the hydraulic oil inside the third flow tube 111 is pressed toward the inside of the second moving column 14; one ends of the pair of elastic soft plates 3, which are close to each other, are also extruded and moved to the direction of the stop plate 17 by the hydraulic oil inside the third flow guide pipe 111; the flexible soft board 3 moves to drive the second magnetic soft board 31 to move together, so that the 321 and the second magnetic soft board 31 repel each other due to magnetic force; the second magnetic soft plate 31 and the third magnetic soft plate 32 improve the effect that one end of the blocking plate 17 far away from the oil drainage column 12 is lifted upwards; the integral device improves the stability of the first lifting plate 15 and the second lifting plate 16 when the lifting plates are lifted upwards; when the hydraulic oil pump works, the hydraulic oil on the inner side of the third flow guide pipe 111 extrudes the blocking plate 17 through the flow guide holes 4; the whole device reduces the occurrence of the situation that the inner side of the third flow guide pipe 111 is blocked by the inner structure of the third flow guide pipe 111 and hydraulic oil passes through the third flow guide pipe; when the lifting device works, the drainage plate 5 is made of elastic materials, and the drainage plate 5 extrudes hydraulic oil on the inner side of the communication part of the first guide pipe 19 and the second guide pipe 110 to improve the moving effect of upward lifting of the first lifting plate 15 and the second lifting plate 16 of the whole device; during operation, the sealing plate 6 is made of an elastic material, and the sealing plate 6 reduces the occurrence of the situation that the hydraulic oil in the first and second flow guide pipes 19 and 110 is discharged to the outside through the space between the first movable column 11 and the oil discharge column 12.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.

Claims (6)

1. An oil drainage stopping device for a hydraulic jack comprises a hydraulic device body (1), a first moving column (11), an oil drainage column (12), a first liquid storage column (13), a second moving column (14), a first lifting plate (15), a second lifting plate (16) and a stopping plate (17); the top of the hydraulic device body (1) is communicated with a first movable column (11); the inner side of the first movable column (11) is connected with an oil drainage column (12) in a sliding manner; a first liquid storage column (13) is fixedly connected to one side, far away from the first movable column (11), of the top of the hydraulic device body (1); the top of the hydraulic device body (1) is communicated with a second movable column (14); the inner side of the second moving column (14) is connected with a first lifting plate (15) in a sliding manner; a second lifting plate (16) is fixedly connected to the top of the first lifting plate (15); the top of the hydraulic device body (1) is fixedly connected with a stop plate (17); the blocking plate (17) is arranged on one side of a communication position of the second moving column (14) and the hydraulic device body (1); the top of the hydraulic device body (1) is provided with a diversion trench (18); the diversion trench (18) is arranged on the inner side of the first liquid storage column (13); the top of the inner side of the hydraulic device body (1) is fixedly connected with a first flow guide pipe (19); the top of the first draft tube (19) is communicated with the inner side of the guide groove (18); a second guide pipe (110) is fixedly connected to the top of the inner side of the hydraulic device body (1); the bottom of the inner side of the first guide pipe (19) is communicated with the top of the inner side of the second guide pipe (110); the method is characterized in that: the oil discharging column (12) is connected with the inner side of the communication part of the first guide pipe (19) and the second guide pipe (110) in a sliding way; the top of the second flow guide pipe (110) is communicated with a third flow guide pipe (111); the top of the third guide pipe (111) is communicated with the inner side of the second moving column (14); a closing plate (112) is fixedly connected to the top of the inner side of the first flow guide pipe (19); the bottom of the closing plate (112) is in contact with the bottom of the inner side of the first flow guide pipe (19); a first extrusion column (113) is fixedly connected to one side, close to the oil discharge column (12), of the closed plate (112); a second extrusion column (115) is fixedly connected to one side, close to the first extrusion column (113), of the oil drainage column (12); and the side walls of the second extrusion column (115) and the first extrusion column (113) close to each other are fixedly connected with a first magnetic soft plate (114).

2. The oil drain stopping device for the hydraulic jack as claimed in claim 1, wherein: a fourth guide pipe (2) is fixedly connected to the top of the second movable column (14); the top of the fourth flow guide pipe (2) is fixedly connected with the top of the inner side of the first liquid storage column (13); the inner side of the fourth draft tube (2) is in contact with the outer side of the oil discharge column (12); a second liquid storage column (21) is communicated with one side of the fourth guide pipe (2) far away from the oil drainage column (12); the second liquid storage column (21) is arranged outside the first liquid storage column (13); a scraping plate (22) is fixedly connected to the top of the inner side of the first liquid storage column (13); the scraping plate (22) is arranged on the inner side of the fourth flow guide pipe (2); and the side wall of one side of the fourth guide pipe (2) far away from the second liquid storage column (21) is contacted with the outer side of the oil discharge column (12).

3. The oil drain stopping device for the hydraulic jack as claimed in claim 2, wherein: two side walls of the inner side of the third flow guide pipe (111) are fixedly connected with elastic soft plates (3); a second magnetic soft board (31) is fixedly connected to the side wall of one side, close to each other, of the pair of elastic soft boards (3); and a third magnetic soft plate (32) is fixedly connected to the bottom of the blocking plate (17).

4. The oil drain stopping device for the hydraulic jack as claimed in claim 3, wherein: the side wall of the elastic soft board (3) is provided with a plurality of groups of flow guide holes (4).

5. The oil drain stopping device for the hydraulic jack as claimed in claim 4, wherein: the bottom end of the outer side of the oil drainage column (12) is fixedly connected with a liquid drainage plate (5); the outer side of the drainage plate (5) is in mutual contact with the joint of the first draft tube (19) and the second draft tube (110).

6. The oil drain stopping device for the hydraulic jack as claimed in claim 5, wherein: a sealing plate (6) is fixedly connected to the outer side wall of the oil drainage column (12); the sealing plate (6) is arranged on the inner side of the first moving column (11).

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