Combined jack

Abstract

The utility model discloses a combined jack which comprises a hydraulic jack, a lifting piece, a guide plate, a closing plate and a bottom plate, the hydraulic jack is vertically installed on the closing plate, the closing plate is fixed on one side of the bottom plate, the guide plate is vertically installed on the other side of the bottom plate, a guide groove is formed in the guide plate, and the lifting piece comprises a lifting piece body. A first supporting plate and a second supporting plate which transversely extend outwards are arranged in the middle and at the bottom of the lifting part body respectively, the lifting part body can be installed on the inner side of the guide groove in an up-down sliding mode, and the output end of the hydraulic jack is located under the first supporting plate. During use, lifting force of the hydraulic jack is transmitted to the lifting part through the first supporting plate, and lifting of materials is achieved through the lifting part. The lifting piece is provided with three adjustable supporting points with different heights, so that an operator can conveniently and flexibly select the corresponding supporting points to carry out material lifting operation. The combined jack is convenient to operate, small in minimum lifting height, high in applicability and capable of meeting the lifting requirements of materials with different heights.

Description

Technical Field

[0001] The utility model relates to a lifting device, in particular to a combined jack. Background Art

[0002] Hydraulic jacks are easy to operate and are often used for placing and installing materials such as machinery and equipment. However, their disadvantage is their limited applicability. Their minimum lifting height is fixed (usually 100mm), so they can only lift equipment or objects that are taller than themselves. When the ground clearance of the supporting legs of mechanical equipment or other materials is low, the hydraulic jack cannot lift the mechanical equipment. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a combined jack which is easy to operate, has a small minimum lifting height, is highly applicable and can meet the lifting needs of materials at different heights, in view of the deficiencies in the existing technology.

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a combined jack, including a hydraulic jack, a lifting member, a guide plate, a plywood and a base plate, the hydraulic jack is upright mounted on the plywood, the plywood is fixed on one side of the base plate, the guide plate is vertically mounted on the other side of the base plate, a guide groove is provided in the guide plate, the lifting member includes a lifting member main body, the middle and bottom of the lifting member main body are respectively provided with a first support plate and a second support plate extending laterally outward, the lifting member main body can be slidably mounted on the inner side of the guide groove, and the output end of the hydraulic jack is located directly below the first support plate.

[0005] When the combined jack of this utility model lifts materials, the hydraulic jack applies an upward thrust to the first support plate. The lifting force of the hydraulic jack is transmitted to the lifting member through the first support plate, and the lifting member lifts the materials. The first support plate in the middle of the lifting member, the second support plate at the bottom, and the top of the lifting member serve as three support points with different and adjustable heights. This allows operators to flexibly select the corresponding support point to perform the corresponding material lifting operation based on the actual height of the material before lifting. During the material lifting process, the hydraulic jack drives the lifting member to move upward along the guide groove, and the guide plate guides and laterally limits the movement of the lifting member.

[0006] When the combined jack of the present invention is in use, the base plate is placed on the ground or on a work platform. In the initial state, when the hydraulic jack is not operating and the second support plate is at its lowest height, the height of the top surface of the second support plate is the lowest lifting height of the combined jack of the present invention. When the lifting height needs to be adjusted, the lifting member is raised by the hydraulic jack, and the heights of the three support points on the lifting member can be simultaneously changed, thereby meeting the lifting needs of materials at different heights.

[0007] Preferably, the first support plate comprises an integrally formed vertical portion and a horizontal portion, the vertical portion being fixed to the outer side wall of the guide plate, and the output end of the hydraulic jack being located directly below the horizontal portion. Since the power of the hydraulic jack is transmitted to the lifting member via the first support plate, designing the first support plate as a vertical portion and a horizontal portion increases the contact area between the first support plate and the guide plate, as well as the structural strength of the first support plate, thereby ensuring overall structural stability and reliable power transmission.

[0008] Preferably, the guide plate includes two groove plates spaced apart from each other, the bottoms of the two groove plates being interference-fitted and vertically inserted into the bottom plate, the cross-section of each groove plate being C-shaped, the notches of the two groove plates being arranged relative to each other, the two groove plates forming the guide groove, the tops of the two groove plates being connected via a U-shaped sealing member, the sealing member being fixed to the tops of the two groove plates by bolts, the inner hole of the sealing member being adapted to the cross-sectional shape and size of the top of the lifter body, the top of the lifter body extending upward from the inner hole of the sealing member. Using two groove plates as guide plates and connecting the two groove plates via the sealing member has a simple structure and is easy to assemble, and the sealing member limits the upward movement of the lifter, preventing the lifter from disengaging from the guide groove due to excessive upward movement, thereby ensuring safety.

[0009] As a further preference, the interference between the bottom of each groove plate and the base plate is 0.1 to 0.15 mm, so as to improve the assembly accuracy between the groove plate and the base plate and ensure the accuracy and reliability of the up and down movement of the lifting parts.

[0010] Preferably, one side of the bottom of the plywood and one side of the base plate are provided with a notch, and the top of the other side of the base plate is provided with a downwardly sloping surface, located below the second support plate. The notch facilitates operator access and operation of the hydraulic jack; the slope facilitates loading of materials to be lifted, avoiding interference and reducing material collisions. Furthermore, the notch and slope also conserve material used in the plywood and base plate, reducing weight and costs.

[0011] Compared with the existing technology, the present invention has the following advantages: When the combined jack of the present invention is in use, the hydraulic jack applies an upward thrust to the first support plate. The lifting force of the hydraulic jack is transmitted to the lifting member through the first support plate, and the lifting member lifts the material. The first support plate in the middle of the lifting member, the second support plate at the bottom, and the top of the lifting member serve as three support points at different and adjustable heights. This allows operators to flexibly select the corresponding support point to perform the corresponding material lifting operation based on the actual height of the material before lifting. This combined jack is easy to operate, has a low minimum lifting height, and is highly adaptable, meeting the needs of lifting materials at different heights. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a front view of the combined jack in the embodiment;

[0013] Figure 2 A top view of the combined jack in the embodiment;

[0014] Figure 3 This is a front view of the lifting member in the embodiment;

[0015] Figure 4 is a top view of the groove plate in the embodiment;

[0016] Figure 5 A top view of the sealing member in the embodiment;

[0017] The specific reference numerals in the figures are as follows:

[0018] 1- hydraulic jack, 2- lifting member, 21- lifting member body, 22- first support plate, 23- second support plate, 24- vertical portion, 25- horizontal portion, 3- guide plate, 31- guide groove, 32- groove plate, 4- plywood, 5- bottom plate, 51- inclined surface, 6- notch portion, 7- sealing member, 71- inner hole. DETAILED DESCRIPTION

[0019] The following is a further detailed description of the present invention in conjunction with the accompanying drawings. Components or structures not defined in the present invention are all based on conventional techniques in the art.

[0020] The combined jack of the embodiment, such as Figures 1 to 5As shown, it includes a hydraulic jack 1, a lifting member 2, a guide plate 3, a plywood 4 and a base plate 5. The hydraulic jack 1 is upright mounted on the plywood 4, which is welded and fixed to one side of the base plate 5. The guide plate 3 is vertically mounted on the other side of the base plate 5. A guide groove 31 is provided in the guide plate 3. The lifting member 2 includes a lifting member body 21. The middle and bottom of the lifting member body 21 are respectively provided with a first support plate 22 and a second support plate 23 extending laterally. The lifting member body 21 can be slidably mounted on the inner side of the guide groove 31. The output end of the hydraulic jack 1 is located directly below the first support plate 22.

[0021] In this embodiment, a notch 6 is provided on one side of the bottom of the plywood 4 and one side of the bottom plate 5, and a slope 51 inclined from top to bottom is provided on the top of the other side of the bottom plate 5, and the slope 51 is located on the lower side of the second support plate 23; the first support plate 22 includes an integral vertical portion 24 and a horizontal portion 25, the vertical portion 24 is fixed to the outer wall of the guide plate 3, and the output end of the hydraulic jack 1 is located directly below the horizontal portion 25.

[0022] In this embodiment, the guide plate 3 includes two groove plates 32 spaced apart in front and back, the bottoms of the two groove plates 32 are interference fit and vertically inserted into the base plate 5, the interference between the bottom of each groove plate 32 and the base plate 5 is 0.1 mm, the cross-section of each groove plate 32 is C-shaped, the notches of the two groove plates 32 are opposite to each other, the two groove plates 32 form a guide groove 31, the tops of the two groove plates 32 are connected by a U-shaped sealing member 7, the sealing member 7 is fixed to the tops of the two groove plates 32 by bolts, the inner hole 71 of the sealing member 7 is adapted to the cross-sectional shape and size of the top of the lifting member main body 21, and the top of the lifting member main body 21 extends upward from the inner hole 71 of the sealing member 7.

[0023] The modular jack is designed with a minimum lifting height of 30mm and a maximum lifting height of 160mm. The height of the lifting member 2 is 420mm. The modular jack is easy to operate, has a short lever, is compact, and is easy to carry. Its low minimum lifting height and wide applicability make it suitable for lifting materials at different heights.

[0024] When the combined jack is in use, the base plate 5 is placed on the ground or on a work platform. Initially, when the hydraulic jack 1 is inoperative and the second support plate 23 is at its lowest height, the height of the top surface of the second support plate 23 represents the combined jack's minimum lifting height. To adjust the lifting height, the hydraulic jack 1 raises the lifting member 2, simultaneously adjusting the heights of the three support points on the lifting member 2 to meet the lifting requirements of materials at different heights.

[0025] When the above-mentioned combined jack lifts materials, the hydraulic jack 1 applies an upward thrust to the first support plate 22. The lifting force of the hydraulic jack 1 is transmitted to the lifting member 2 through the first support plate 22, and the lifting of the material is achieved through the lifting member 2. The first support plate 22 in the middle of the lifting member 2, the second support plate 23 at the bottom, and the top of the lifting member 2 serve as three support points with different and adjustable heights, allowing operators to flexibly select the corresponding support points according to the actual height of the material before lifting to perform the corresponding material lifting operation. During the material lifting process, the hydraulic jack 1 drives the lifting member 2 to move upward along the guide groove 31, and the guide plate 3 guides and laterally limits the movement of the lifting member 2.

Claims

1. A combined jack, characterized in that: It includes a hydraulic jack, a lifting member, a guide plate, a plywood and a base plate. The hydraulic jack is upright installed on the plywood, the plywood is fixed on one side of the base plate, the guide plate is vertically installed on the other side of the base plate, and a guide groove is provided in the guide plate. The lifting member includes a lifting member body, and the middle and bottom of the lifting member body are respectively provided with a first support plate and a second support plate extending laterally outward. The lifting member body can be slidably installed on the inner side of the guide groove up and down, and the output end of the hydraulic jack is located directly below the first support plate.

2. A combined jack according to claim 1, characterized in that: The first support plate includes a vertical portion and a horizontal portion that are integrally arranged. The vertical portion is fixed to the outer side wall of the guide plate, and the output end of the hydraulic jack is located directly below the horizontal portion.

3. A combined jack according to claim 1, characterized in that: The guide plate includes two groove plates spaced apart in front and back, the bottoms of the two groove plates are interference fit and vertically inserted into the bottom plate, the cross-section of each groove plate is C-shaped, the notches of the two groove plates are relatively arranged, the two groove plates form the guide groove, the tops of the two groove plates are connected by a U-shaped sealing piece, the sealing piece is fixed to the tops of the two groove plates by bolts, the inner hole of the sealing piece is adapted to the cross-sectional shape and size of the top of the lifting member main body, and the top of the lifting member main body extends upward from the inner hole of the sealing piece.

4. A combined jack according to claim 3, characterized in that: The interference between the bottom of each groove plate and the base plate is 0.1-0.15 mm.

5. The combined jack according to claim 1, characterized in that: One side of the bottom of the plywood and one side of the bottom plate are provided with a notch, and the top of the other side of the bottom plate is provided with an inclined surface inclined from top to bottom, and the inclined surface is located on the lower side of the second support plate.

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