CN218841557U - Hydraulic jack - Google Patents

Abstract

The application relates to a hydraulic jack, and relates to the technical field of jacks. The oil tank comprises a base, an oil storage tank, a first oil cylinder, a second oil cylinder and a driving assembly; the oil storage tank and the first oil cylinder are arranged on the base, the inner cavity of the first oil cylinder is connected with a first pressing plate in a sliding mode, the first pressing plate slides along the axis direction of the first oil cylinder, the inner cavity of the first oil cylinder is divided into a first upper cavity and a first lower oil cavity by the first pressing plate, a first piston rod is coaxially and fixedly connected onto the first pressing plate, one end, far away from the first pressing plate, of the first piston rod is fixedly connected with a second oil cylinder in a coaxial mode, the inner cavity of the second oil cylinder is connected with a second pressing plate in a sliding mode, the second pressing plate slides along the axis direction of the second oil cylinder, the inner cavity of the second oil cylinder is divided into a second upper cavity and a second lower oil cavity by the second pressing plate, a second piston rod is coaxially and fixedly connected onto the second pressing plate, and one end, far away from the second pressing plate, of the second piston rod is fixedly connected with a bearing block. This application has the effect that improves the suitability of jack.

Description

Hydraulic jack

Technical Field

The application relates to the technical field of jacks, in particular to a hydraulic jack.

Background

The jack is a light and small lifting device which uses a rigid lifting piece as a working device and lifts a heavy object in a stroke through a top bracket or a bottom supporting claw. The jacks are mainly divided into mechanical type and hydraulic type, and when the building is reinforced by adopting a jacking deviation rectifying method, the hydraulic jacks are usually used for jacking the columns.

In the related art, a hydraulic jack includes an oil chamber, an oil pump, an oil storage chamber, a piston, and an oil valve. When the piston is used, the oil pump continuously presses oil into the oil cylinder, and the piston and the weight on the piston are forced to move upwards together due to the continuous increase of the oil pressure in the oil cylinder. And opening the oil return valve, so that high-pressure oil in the oil cylinder flows back to the oil storage cavity, and the heavy object and the piston fall together.

With respect to the related art in the above, the inventor believes that when the height of the column to be lifted is greater than the maximum stroke of the jack, it is difficult for the column to reach a predetermined height, resulting in low applicability of the jack.

SUMMERY OF THE UTILITY MODEL

In order to improve the suitability of jack, this application provides a fluid pressure type jack.

The application provides a hydraulic jack adopts following technical scheme:

a hydraulic jack comprises a base, an oil storage tank, a first oil cylinder, a second oil cylinder and a driving assembly, wherein the driving assembly is used for driving hydraulic oil in the oil storage tank to flow into the first oil cylinder and the second oil cylinder;

the oil storage tank and the first oil cylinder are both arranged on the base, the inner cavity of the first oil cylinder is connected with a first pressing plate in a sliding mode, the first pressing plate slides along the axis direction of the first oil cylinder, the inner cavity of the first oil cylinder is divided into a first upper cavity and a first lower oil cavity by the first pressing plate, a first piston rod is coaxially and fixedly connected onto the first pressing plate, one end, far away from the first pressing plate, of the first piston rod is fixedly connected with the second oil cylinder in a coaxial mode, the inner cavity of the second oil cylinder is connected with a second pressing plate in a sliding mode, the second pressing plate slides along the axis direction of the second oil cylinder, the inner cavity of the second oil cylinder is divided into a second upper cavity and a second lower oil cavity by the second pressing plate, a second piston rod is coaxially and fixedly connected onto the second pressing plate, one end, far away from the second pressing plate, of the second piston rod is fixedly connected with a bearing block, and the bottom end of the column is abutted to the bearing block;

the first lower oil cavity is communicated with the inner cavity of the oil storage tank through a first oil pipe, and the second lower oil cavity is communicated with the inner cavity of the oil storage tank through a second oil pipe;

the drive assembly is arranged at the oil storage tank.

By adopting the technical scheme, the hydraulic jack is installed at the bottom end of the column, the bearing block is abutted against the bottom end of the column, the driving assembly is started, hydraulic oil flows into the first lower oil cavity from the oil storage tank through the first oil pipe, the first pressing plate slides upwards along the axis direction of the first oil cylinder under the action of oil pressure in the first lower oil cavity, the first pressing plate drives the first piston rod to move upwards, so that the second oil cylinder at the top end of the first piston rod moves upwards, meanwhile, the hydraulic oil flows into the second lower oil cavity through the second oil pipe, the second pressing plate slides upwards along the axis direction of the second oil cylinder under the action of oil pressure in the second lower oil cavity, the second pressing plate drives the second piston rod to move upwards, so that the bearing block at the top end of the second piston rod moves upwards, and the bearing block jacks up the column; the hydraulic jack of design, first piston rod drive the second hydro-cylinder and rise along the ascending of first hydro-cylinder axis direction, and simultaneously, the second clamp plate upwards slides along second hydro-cylinder axis direction for the second piston rod rises along second hydro-cylinder axis direction, has increased the stroke of jack among the traditional art, is convenient for with the post jacking to predetermined height, has improved the suitability of jack.

Optionally, the driving assembly includes an oil pump, a connecting pipe and a three-way joint;

the oil pump is located the oil storage tank inner chamber, the connecting pipe rigid coupling in the oil pump goes out oil end, three way connection with the connecting pipe is kept away from oil pump one end rigid coupling, first oil pipe with second oil pipe all with the three way connection rigid coupling.

Through adopting above-mentioned technical scheme, the drive assembly of design, through the hydraulic oil inflow connecting pipe in the hydro-cylinder drive oil storage tank, is supplied with first oil pipe and second oil pipe respectively with hydraulic oil by the three way connection of connecting pipe tip again, is convenient for drive hydraulic oil inflow first oil pocket and second oil pocket.

Optionally, a controller for controlling the oil pump to operate is arranged on the oil storage tank, and the controller is electrically connected with the oil pump.

By adopting the technical scheme, the designed controller is convenient for controlling the oil pump to work and stop.

Optionally, a first oil valve is installed on the first oil pipe, a second oil valve is installed on the second oil pipe, and both the first oil valve and the second oil valve are electrically connected with the controller.

By adopting the technical scheme, when the first piston rod is required to ascend, the controller is operated, the controller enables the first oil valve to be opened, hydraulic oil flows into the first lower oil cavity through the first oil pipe under the action of the oil pump, the first pressure plate slides upwards, and the first piston rod is driven to ascend conveniently; when the first piston rod needs to stop rising, the controller is operated, the controller enables the first oil valve to be closed, hydraulic oil in the oil storage tank cannot flow into the first lower oil cavity, and the first piston rod is convenient to stop at a certain height; when the second piston rod needs to ascend, the controller is operated, the controller enables the second oil valve to be opened, hydraulic oil flows into the second lower oil cavity through the second oil pipe under the action of the oil pump, the second pressure plate slides upwards, and the second piston rod is driven to ascend conveniently; when the second piston rod needs to stop rising, the controller is operated, the controller enables the second oil valve to be closed, hydraulic oil in the oil storage tank cannot flow into the second lower oil cavity, and the second piston rod can be conveniently stopped at a certain height; the designed first oil valve and the second oil valve control the opening and closing of the first oil valve and the second oil valve through operating the controller, so that the rising of the first piston rod and the second piston rod is controlled conveniently, and the first piston rod and the second piston rod are stopped at a certain height conveniently.

Optionally, the oil pump is a bidirectional gear pump.

By adopting the technical scheme, the oil pump is set as a bidirectional gear pump, the controller is operated to start the oil pump, and when the oil pump rotates forwards, hydraulic oil in the oil storage tank flows into the first lower oil cavity and the second lower oil cavity, so that the first piston rod and the second piston rod can rise conveniently; when the oil pump rotates reversely, the hydraulic oil in the first lower oil chamber and the second lower oil chamber flows back to the oil storage tank, so that the first piston rod and the second piston rod can descend conveniently.

Optionally, an oil pressure gauge is installed on the connecting pipe.

Through adopting above-mentioned technical scheme, the oil pressure gauge of design, the staff of being convenient for monitors the oil pressure in the jack.

Optionally, the top wall of the first pressure plate is provided with a first sealing ring.

Through adopting above-mentioned technical scheme, the first sealing washer of design is convenient for reduce the hydraulic oil in the first lower oil pocket and flows into first upper plenum, has improved the gas tightness of first lower oil pocket.

Optionally, a second sealing ring is arranged on the top wall of the second pressure plate.

Through adopting above-mentioned technical scheme, the second sealing washer of design is convenient for reduce the hydraulic oil in the second lower oil pocket and is flowed into second upper chamber, has improved the gas tightness of second lower oil pocket.

In summary, the present application includes at least one of the following beneficial technical effects:

1. according to the designed hydraulic jack, the first piston rod drives the second oil cylinder to ascend along the direction of the axis of the first oil cylinder, and meanwhile, the second pressing plate slides upwards along the direction of the axis of the second oil cylinder, so that the second piston rod ascends along the direction of the axis of the second oil cylinder, the stroke of the jack in the traditional technology is increased, the column is conveniently jacked to the preset height, and the applicability of the jack is improved.

Drawings

Fig. 1 is a schematic structural view of a hydraulic jack according to an embodiment of the present application;

fig. 2 is a sectional view of a hydraulic jack according to an embodiment of the present application;

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

FIG. 4 is an enlarged view of portion B of FIG. 2;

fig. 5 is an enlarged view of portion C in fig. 2.

Reference numerals: 1. a base; 2. an oil storage tank; 3. a first cylinder; 31. a first platen; 32. a first piston rod; 33. a first seal ring; 34. a first upper cavity; 35. a first lower oil chamber; 4. a second cylinder; 41. a second platen; 42. a second piston rod; 43. a second seal ring; 44. a second upper cavity; 45. a second lower oil chamber; 46. a bearing block; 5. a drive assembly; 51. an oil pump; 52. a connecting pipe; 53. a three-way joint; 6. a first oil pipe; 61. a first rigid section; 611. a first oil valve; 62. a first rubber section; 7. a second oil pipe; 71. a second rigid section; 711. a second oil valve; 72. a second rubber section; 8. an oil pressure gauge; 9. and a controller.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses a hydraulic jack.

Referring to fig. 1, 2 and 3, a hydraulic jack includes a base 1, an oil tank 2, a first oil cylinder 3, a second oil cylinder 4, and a driving assembly 5 for driving hydraulic oil in the oil tank 2 to flow into the first oil cylinder 3 and the second oil cylinder 4; the oil storage tank 2 is placed on the base 1, the first oil cylinder 3 is fixedly connected to the base 1 in a bolt connection mode, a first pressing plate 31 is connected to an inner cavity of the first oil cylinder 3 in a sliding mode, the first pressing plate 31 slides along the axis direction of the first oil cylinder 3, the inner cavity of the first oil cylinder 3 is divided into a first upper cavity 34 and a first lower oil cavity 35 by the first pressing plate 31, a first piston rod 32 is coaxially welded on the first pressing plate 31, one end, far away from the first pressing plate 31, of the first piston rod 32 is fixedly connected with the bottom wall of the second oil cylinder 4 in a bolt connection mode, the inner cavity of the second oil cylinder 4 is connected with a second pressing plate 41 in a sliding mode, the second pressing plate 41 slides along the axis direction of the second oil cylinder 4, the inner cavity of the second oil cylinder 4 is divided into a second upper cavity 44 and a second oil cavity lower oil cavity 45 by the second pressing plate 41, a second piston rod 42 is coaxially welded on the second pressing plate 41, one end, a bearing block 46 is welded on the second piston rod 42, the bottom end of the column is abutted against the top wall of the driving assembly 5 arranged at the oil storage tank 2; install the fluid pressure type jack in the post bottom, make carrier block 46 roof and post bottom butt, start drive assembly 5, hydraulic oil flows into first lower oil chamber 35 from the batch oil tank 2, under the effect of oil pressure in first lower oil chamber 35, make first clamp plate 31 upwards slide along first hydro-cylinder 3 axis direction, first clamp plate 31 drives first piston rod 32 upward movement, thereby make the second hydro-cylinder 4 upward movement on first piston rod 32 top, simultaneously, hydraulic oil flows into in second lower oil chamber 45, under the effect of oil pressure in second lower oil chamber 45, make second clamp plate 41 upwards slide along second hydro-cylinder 4 axis direction, second clamp plate 41 drives second piston rod 42 upward movement, thereby make the carrier block 46 upward movement on second piston rod 42 top, carrier block 46 is with the post jacking.

Referring to fig. 2 and 3, the first lower oil chamber 35 is communicated with an inner cavity of the oil storage tank 2 through a first oil pipe 6, and the second lower oil chamber 45 is communicated with the inner cavity of the oil storage tank 2 through a second oil pipe 7, in this embodiment, the first oil pipe 6 includes a first rigid section 61 and a first rubber section 62, the first rigid section 61 is clamped with the first rubber section 62, the inner cavity of the first rigid section 61 is communicated with the inner cavity of the first rubber section 62, one end of the first rubber section 62, which is far away from the first rigid section 61, is connected with the first oil cylinder 3 in a flange connection manner, and the inner cavity of the first rubber section 62 is communicated with the first lower oil chamber 35; the second oil pipe 7 comprises a second rigid section 71 and a second rubber section 72, the second rigid section 71 is connected with the second rubber section 72 in a clamping mode, an inner cavity of the second rigid section 71 is communicated with an inner cavity of the second rubber section 72, one end, far away from the second rigid section 71, of the second rubber section 72 is connected with the second oil cylinder 4 in a flange connection mode, an inner cavity of the second rubber section 72 is communicated with the second lower oil cavity 45, and the length of the second rubber section 72 can be supplied for the second oil cylinder 4 to ascend and descend.

Referring to fig. 1, 2 and 3, the driving assembly 5 includes an oil pump 51, a connecting pipe 52 and a three-way joint 53, the oil pump 51 is installed on an inner wall of the oil storage tank 2, the connecting pipe 52 is installed on an oil outlet end of the oil pump 51 through a flange, the connecting pipe 52 extends out of the oil storage tank 2, an oil pressure gauge 8 is installed on the connecting pipe 52, the three-way joint 53 is in threaded connection with one end of the connecting pipe 52 away from the oil pump 51, one end of the first rigid section 61 away from the first rubber section 62 is in threaded connection with a lower end of the three-way joint 53, one end of the second rigid section 71 away from the second rubber section 72 is in threaded connection with an upper end of the three-way joint 53, the oil storage tank 2 is fixedly connected with a controller 9 for controlling the oil pump 51 to operate through a bolt connection manner, and the controller 9 is electrically connected with the oil pump 51; to facilitate the lowering of the first and second piston rods 32, 42, the oil pump 51 is provided as a bidirectional gear pump.

Referring to fig. 1, 2 and 3, in order to facilitate the control of the opening and closing of the first oil pipe 6, the first rigid section 61 is flanged with a first oil valve 611; in order to facilitate the control of the opening and closing of the first oil pipe 6, the second rigid section 71 is flanged with a second oil valve 711, and the first oil valve 611 and the second oil valve 711 are both electrically connected with the controller 9.

Referring to fig. 2, 4 and 5, a first sealing ring 33 is coaxially bonded to the top wall of the first pressing plate 31, the first sealing ring 33 is located in the first upper cavity 34, the first sealing ring 33 is coaxially sleeved on the first piston rod 32, a second sealing ring 43 is coaxially bonded to the top wall of the second pressing plate 41, the second sealing ring 43 is located in the second upper cavity 44, and the second sealing ring 43 is coaxially sleeved on the second piston rod 42.

The implementation principle of the hydraulic jack in the embodiment of the application is as follows: installing a hydraulic jack at the bottom end of the column, enabling the top wall of the bearing block 46 to abut against the bottom end of the column, operating the controller 9, starting the oil pump 51, when the first piston rod 32 is required to ascend, opening the first oil valve 611 through the controller 9, enabling hydraulic oil in the oil storage tank 2 to flow into the connecting pipe 52 through the oil pump 51, then flow into the first oil pipe 6 through the three-way joint 53, and finally flow into the first lower oil cavity 35, enabling the first pressure plate 31 to ascend, and enabling the first pressure plate 31 to drive the first piston rod 32 to ascend; when the second piston rod 42 needs to ascend, the controller 9 opens the second oil valve 711, so that the hydraulic oil in the oil storage tank 2 flows into the connecting pipe 52 through the oil pump 51, then flows into the second oil pipe 7 through the three-way joint 53, and finally flows into the second lower oil chamber 45, so that the second pressing plate 41 ascends, and the second pressing plate 41 drives the second piston rod 42 to ascend; when the first piston rod 32 needs to be stopped at a certain height, the oil pump 51 and the first oil valve 611 are closed by the controller 9; when the second piston rod 42 needs to be stopped at a certain height, the oil pump 51 and the second oil valve 711 are closed by the controller 9; when the first piston rod 32 needs to descend, the oil pump 51 is started through the controller 9, so that the oil pump 51 rotates reversely, meanwhile, the first oil valve 611 is opened, so that the hydraulic oil in the first lower oil chamber 35 flows back to the oil storage tank 2, the first pressure plate 31 descends, and the first piston rod 32 is convenient to descend; when the second piston rod 42 is required to descend, the oil pump 51 is started by the controller 9, so that the oil pump 51 is reversely rotated, and at the same time, the second oil valve 711 is opened, so that the hydraulic oil in the second lower oil chamber 45 flows back into the oil tank 2, and the second pressure plate 41 descends, facilitating the descent of the second piston rod 42.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. A hydraulic jack is characterized in that: the hydraulic oil storage device comprises a base (1), an oil storage tank (2), a first oil cylinder (3), a second oil cylinder (4) and a driving assembly (5) for driving hydraulic oil in the oil storage tank (2) to flow into the first oil cylinder (3) and the second oil cylinder (4);

the oil storage tank (2) and the first oil cylinder (3) are arranged on the base (1), the inner cavity of the first oil cylinder (3) is connected with a first pressing plate (31) in a sliding mode, the first pressing plate (31) slides along the axis direction of the first oil cylinder (3), the first pressing plate (31) divides the inner cavity of the first oil cylinder (3) into a first upper cavity (34) and a first lower oil cavity (35), a first piston rod (32) is coaxially and fixedly connected to the first pressing plate (31), one end, far away from the first pressing plate (31), of the first piston rod (32) is fixedly connected with the second oil cylinder (4) in a coaxial mode, the inner cavity of the second oil cylinder (4) is connected with a second pressing plate (41) in a sliding mode, the second pressing plate (41) slides along the axis direction of the second oil cylinder (4), the inner cavity of the second oil cylinder (4) is divided into a second upper cavity (44) and a second lower oil cavity (45) by the second pressing plate (41), one end, far away from a second bearing block (46) and a bearing block (46) are fixedly connected with the second pressing plate (41);

the first lower oil cavity (35) is communicated with the inner cavity of the oil storage tank (2) through a first oil pipe (6), and the second lower oil cavity (45) is communicated with the inner cavity of the oil storage tank (2) through a second oil pipe (7);

the driving assembly (5) is arranged at the oil storage tank (2).

2. A hydraulic jack as claimed in claim 1 wherein: the driving assembly (5) comprises an oil pump (51), a connecting pipe (52) and a three-way joint (53);

oil pump (51) are located oil storage tank (2) inner chamber, connecting pipe (52) rigid coupling in oil pump (51) play oil end, three way connection (53) with connecting pipe (52) are kept away from oil pump (51) one end rigid coupling, first oil pipe (6) with second oil pipe (7) all with three way connection (53) rigid coupling.

3. A hydraulic jack as claimed in claim 2 in which: the oil storage tank (2) is provided with a controller (9) used for controlling the oil pump (51) to operate, and the controller (9) is electrically connected with the oil pump (51).

4. A hydraulic jack as claimed in claim 3 in which: the first oil pipe (6) is provided with a first oil valve (611), the second oil pipe (7) is provided with a second oil valve (711), and the first oil valve (611) and the second oil valve (711) are both electrically connected with the controller (9).

5. A hydraulic jack as claimed in claim 2 wherein: the oil pump (51) is a bidirectional gear pump.

6. A hydraulic jack as claimed in claim 2 wherein: an oil pressure gauge (8) is installed on the connecting pipe (52).

7. A hydraulic jack as claimed in claim 1 wherein: the top wall of the first pressure plate (31) is provided with a first sealing ring (33).

8. A hydraulic jack as claimed in claim 1 wherein: and a second sealing ring (43) is arranged on the top wall of the second pressure plate (41).

Images