Hydraulic jack

Abstract

The utility model discloses a hydraulic jack which comprises a hydraulic jack body, a chassis is arranged at the bottom of the hydraulic jack body, expansion assemblies are arranged on the four side faces of the chassis, each expansion assembly comprises an expansion plate and two installation blocks, the installation blocks are fixed to the chassis, and the expansion plates are connected with the two installation blocks. According to the hydraulic jack, the four expansion plates can be rotated to be in a horizontal unfolding state perpendicular to the side face of the chassis, the contact area between the chassis of the hydraulic jack and the ground is enlarged through the four expansion plates, the pressure intensity and stress on the chassis are dispersed, and therefore the chassis is not prone to generating mechanical structure damage; the service life is prolonged; when the hydraulic jack is stored, the four expansion plates can rotate to be in a vertical storage state parallel to the side face of the chassis, at the moment, the overall space formed by the chassis and the expansion assembly is small in occupied space, and transportation and carrying are convenient.

Description

Technical Field

[0001] The utility model relates to a hydraulic jack. Background Art

[0002] A hydraulic jack is a device that amplifies force and lifts heavy objects through the transmission of liquid pressure. The dimensions of the chassis of many existing hydraulic jacks usually correspond to the matching hydraulic cylinders and hydraulic pumps, and the chassis area is usually not large, so that the overall size of the hydraulic jack is small, which is convenient for transportation and carrying. However, the small chassis area will cause the hydraulic jack to generate a large pressure on the chassis when in use, and the resulting stress in the chassis is also large, which makes the chassis prone to mechanical structural damage and affects its service life. Therefore, it is necessary to develop a hydraulic jack with an expandable chassis area to solve the above problems. Utility Model Content

[0003] The purpose of the utility model is to provide a hydraulic jack to solve the problems raised in the above background technology.

[0004] In order to solve the above problems, the utility model adopts the following technical solutions:

[0005] A hydraulic jack comprises a hydraulic jack body, a chassis is provided at the bottom of the hydraulic jack body, and expansion components are provided on the four sides of the chassis. The expansion components comprise an expansion plate and a mounting block. The mounting block is fixed on the chassis, and there are two mounting blocks. The expansion plate is rotatably arranged between the two mounting blocks. A strip groove is provided on the expansion plate, and a support component is provided in the strip groove. An oblique socket corresponding to the support component is provided on the upper part of the side of the chassis.

[0006] Preferably, the support assembly comprises a sleeve rod, one end of which is rotatably connected to the inner wall of the support assembly, an inner rod is slidably arranged inside the sleeve rod, and a spring is arranged between the inner rod and the sleeve rod.

[0007] Preferably, arc grooves are provided on both sides of one end of the strip-shaped groove.

[0008] Preferably, magnet sheets are provided on both sides of the extension plate, and the chassis is made of high-strength carbon steel.

[0009] Preferably, a handle is provided on one side of the expansion plate.

[0010] The beneficial effects of the utility model are as follows: the utility model can rotate the four expansion plates to a horizontal unfolded state perpendicular to the side of the chassis, the four expansion plates expand the contact area between the hydraulic jack chassis and the ground, disperse the pressure and stress on the chassis, make the chassis less likely to produce mechanical structure damage, and extend the service life; when storing the hydraulic jack, the four expansion plates can be rotated to an upright storage state parallel to the side of the chassis, at this time the overall space occupied by the chassis and the expansion components is small, which is convenient for transportation and carrying. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below, but this does not limit the protection scope of the utility model.

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 For this utility model Figure 1 Schematic diagram of the expanded state of the expansion component;

[0014] Figure 3 For this utility model Figure 2 Schematic diagram of the installation of the middle support assembly on the expansion board;

[0015] Figure 4 For this utility model Figure 3 Schematic diagram of the structure of the middle support assembly.

[0016] In the figure: 11, hydraulic jack body; 12, chassis; 13, extension assembly; 14, extension plate; 15, mounting block; 16, support assembly; 17, handle; 18, magnet sheet; 19, strip groove; 20, arc groove; 21, sleeve rod; 22, inner rod. DETAILED DESCRIPTION

[0017] See also Figures 1 to 4The hydraulic jack shown in the figure comprises a hydraulic jack body 11, a chassis 12 is provided at the bottom of the hydraulic jack body 11, and expansion components 13 are provided on the four sides of the chassis 12, and the expansion components 13 include an expansion plate 14 and a mounting block 15, the mounting block 15 is fixed on the chassis 12, and there are two mounting blocks 15. The expansion plate 14 is rotatably arranged between the two mounting blocks 15, and a strip groove 19 is provided on the expansion plate 14, and a support component 16 is provided in the strip groove 19. The upper part of the side of the chassis 12 is provided with An oblique jack corresponding to the support assembly 16; when storing the hydraulic jack, the four expansion plates 14 are rotated to an upright storage state parallel to the side of the chassis 12. At this time, the overall space occupied by the chassis 12 and the expansion assembly 13 is small, which is convenient for transportation and carrying; the four expansion plates 14 can be rotated to a horizontal expansion state perpendicular to the side of the chassis 12. The four expansion plates 14 expand the contact area between the hydraulic jack chassis and the ground, disperse the pressure and stress on the chassis, make the chassis less prone to mechanical structure damage, and extend the service life.

[0018] Furthermore, the support assembly 16 includes a sleeve rod 21, one end of which is rotatably connected to the inner wall of the support assembly 16, an inner rod 22 is slidably provided inside the sleeve rod 21, and a spring is provided between the inner rod 22 and the sleeve rod 21; the sleeve rod 21 is rotated to pull the sleeve rod 21 and the inner rod 22 out of the strip groove 19, so that the sleeve rod 21 and the inner rod 22 are in an inclined state and the inner rod 22 is inserted into the oblique socket on the side of the chassis 12 under the action of the compression spring, so that the sleeve rod 21 and the inner rod 22 can form a support between the chassis 12 and the expansion plate 14.

[0019] Furthermore, arc grooves 20 are provided on both sides of one end of the strip groove 19 ; the arc grooves 20 form a sufficient vacant area at the end of the strip groove 19 , and the sleeve rod 21 and the inner rod 22 can be easily pulled out from the strip groove 19 by inserting fingers into the arc groove 20 .

[0020] Furthermore, magnet sheets 18 are provided on both sides of the expansion plate 14, and the chassis 12 is made of high-strength carbon steel; when the expansion plate 14 is in an upright storage state, the magnet sheets 18 fit with the sides of the chassis 12, and the magnet sheets 18 can be adsorbed with the sides of the chassis 12 through magnetic force, thereby keeping the expansion plate 14 stably in an upright state.

[0021] Furthermore, a handle 17 is provided on one side of the expansion board 14 ; the expansion board 14 can be conveniently rotated by holding the handle 17 .

[0022] The working principle of the utility model is that when the hydraulic jack is stored, the expansion plate 14 is rotated to an upright storage state parallel to the side of the chassis 12. At this time, the magnet sheet 18 is in contact with the side of the chassis 12, and the magnet sheet 18 is adsorbed to the side of the chassis 12 by magnetic force, so that the expansion plate 14 maintains an upright storage state. In this state, the overall space formed by the chassis 12 and the expansion component 13 is small, which is convenient for transportation and carrying.

[0023] When using the hydraulic jack, the expansion plate 14 is rotated to a horizontally expanded state perpendicular to the side of the chassis 12, and then the sleeve rod 21 and the inner rod 22 are pulled out of the strip groove 19, and the inner rod 22 extends from the sleeve rod 21 under the action of the spring, and the sleeve rod 21 and the inner rod 22 are controlled to be in an inclined state, and the inner rod 22 is inserted into the oblique insertion hole on the side of the chassis 12, so that the sleeve rod 21 and the inner rod 22 form a support between the chassis 12 and the expansion plate 14, and the four expansion plates 14 are all expanded in the above manner, and then the hydraulic jack can be placed on the ground for use.

[0024] The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope defined in the claims.

Claims

1. A hydraulic jack, comprising a hydraulic jack body, characterized in that: A chassis is provided at the bottom of the hydraulic jack body, and expansion components are provided on the four sides of the chassis. The expansion component includes an expansion plate and a mounting block. The mounting block is fixed on the chassis. There are two mounting blocks. The expansion plate is rotatably arranged between the two mounting blocks. A strip groove is provided on the expansion plate, and a support component is provided in the strip groove. An oblique socket corresponding to the support component is provided on the upper part of the side of the chassis.

2. A hydraulic jack according to claim 1, characterized in that: The support assembly comprises a sleeve rod, one end of which is rotatably connected to the inner wall of the support assembly, an inner rod is slidably arranged inside the sleeve rod, and a spring is arranged between the inner rod and the sleeve rod.

3. A hydraulic jack according to claim 1, characterized in that: Arc grooves are arranged on both sides of one end of the strip-shaped groove.

4. A hydraulic jack according to claim 1, characterized in that: Magnetic sheets are arranged on both sides of the expansion plate, and the chassis is made of high-strength carbon steel.

5. A hydraulic jack according to claim 1, characterized in that: A handle is provided on one side of the expansion board.

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