An electric hydraulic claw jack

Abstract

The utility model relates to the technical field of jacks, specifically an electric hydraulic claw jack, comprising a bottom plate, a cylinder is fixedly connected to the bottom plate, a piston rod is slidably arranged in the cylinder, the piston rod is connected to a lifting claw through a positioning sleeve, a track housing is fixedly arranged on the outer circumferential wall of the cylinder, and one side of the lifting claw is in sliding contact with the track housing. The lifting claw can be supported by the track housing during the lifting process, and the stability of the jack during use is improved. The utility model also has the advantages of simple structure, convenient manufacturing and low production cost.

Description

Technical Field

[0001] The utility model relates to the technical field of jacks, in particular to an electric hydraulic claw type jack. Background Art

[0002] There are many types of electric hydraulic claw jacks on the market, and they have different functional improvements according to different needs. However, the current electric hydraulic claw jacks still have the problem of insufficient stability of the lifting claws and deformation after long-term use. This application aims to propose an electric hydraulic claw jack that can improve the stability of the lifting claw during use and prevent it from being deformed due to unilateral force, and has the advantages of low production cost, convenient processing, and strong stability in use. Utility Model Content

[0003] The utility model provides an electric hydraulic claw type jack, which can support the lifting claw during the lifting process through the track shell and improve the stability of the jack during use. The utility model also has the advantages of simple structure, convenient manufacturing and low production cost.

[0004] The technical solution to solve the above technical problems is: an electric hydraulic claw jack, including a base plate, a cylinder is fixedly connected to the base plate, a piston rod is slidably arranged in the cylinder, the piston rod is connected to a lifting claw through a positioning sleeve, a track shell is fixedly arranged on the outer circumferential wall of the cylinder, and one side of the lifting claw is in sliding contact with the track shell.

[0005] The track housing is U-shaped, the lifting claw is Z-shaped, and reinforcing ribs are fixedly arranged on both sides of the lifting claw. The reinforcing ribs are in sliding contact with the side walls of the track housing.

[0006] A screw plug is provided at the bottom of the oil cylinder, a first sealing ring is provided in the middle of the screw plug, a dust ring, a first self-lubricating bearing, a second sealing ring, and a second self-lubricating bearing are installed in sequence on the upper part of the oil cylinder, a clamping plate is fixedly connected to the bottom of the piston rod, a clamping groove is provided inside the oil cylinder, and the clamping plate cooperates with the clamping groove to limit the position.

[0007] An oil passage is provided at the lower side of the oil cylinder, and the oil passage notifies an oil port which is welded and fixed on the outer wall of the oil cylinder.

[0008] A handle is welded and fixed on the oil cylinder.

[0009] A connecting pin is fixed on each reinforcing rib plate, two connecting seats are symmetrically arranged on the bottom plate, and a spring is connected between each of the pins and the connecting seat on the same side.

[0010] The beneficial effects of the utility model are:

[0011] 1. The lifting claw is combined with the track shell to provide support for the lifting claw during movement, avoiding bending and deformation of the lifting claw. At the same time, lateral limiting is performed to improve the stability of the jack during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is the front view of the utility model.

[0013] Figure 2 It is a top view of the utility model.

[0014] Figure 3 for Figure 2 Sectional view at AA.

[0015] Figure 4 Schematic diagram of the lifting claw structure.

[0016] Figure 5 for Figure 4 Top view of the structure shown.

[0017] Figure 6 This is a top view of the track shell.

[0018] Figure 7 This is the front view of the track housing.

[0019] The markings in the figure are as follows: base plate 1, oil cylinder 2, oil port 3, handle 4, walking wheel 5, track housing 6, spring 7, connecting seat 8, lifting claw 9, reinforcing rib plate 10, pin 11, piston rod 12, positioning sleeve 13, screw plug 14, dust ring 16, first self-lubricating bearing 17, second sealing ring 18, second self-lubricating bearing 19, and clamping plate 20. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] Combined with Figure 1-7 An electric hydraulic claw jack includes a base plate 1, a cylinder 2 is fixedly connected to the base plate 1, a piston rod 12 is slidably arranged in the cylinder 2, the piston rod 12 is connected to a lifting claw 9 through a positioning sleeve 13, a track housing 6 is fixedly arranged on the outer circumferential wall of the cylinder 2, and one side of the lifting claw 9 is in sliding contact with the track housing 6.

[0022] Furthermore, the track housing 6 is U-shaped, the lifting claw 9 is Z-shaped, and reinforcing ribs 10 are fixedly provided on both sides of the lifting claw 9 , and the reinforcing ribs 10 are in sliding contact with the side walls of the track housing 6 .

[0023] Furthermore, a screw plug 14 is provided at the bottom of the oil cylinder 2, a first sealing ring 15 is provided in the middle of the screw plug 14, a dust ring 16, a first self-lubricating bearing 17, a second sealing ring 18, and a second self-lubricating bearing 19 are installed in sequence on the upper part of the oil cylinder 2, a clamping plate 20 is fixedly connected to the bottom of the piston rod 12, a clamping groove is provided inside the oil cylinder 2, and the clamping plate 20 cooperates with the clamping groove for limiting.

[0024] Furthermore, an oil circuit is opened at the lower side of the oil cylinder 2 , and the oil circuit informs the oil port 3 which is welded and fixed on the outer wall of the oil cylinder 2 .

[0025] Furthermore, a handle 4 is welded and fixed to the oil cylinder 2 .

[0026] Furthermore, a connecting pin 11 is fixed on each reinforcing rib plate 10 , two connecting seats 8 are symmetrically arranged on the bottom plate 1 , and a spring 7 is connected between each pin 11 and the connecting seat 8 on the same side.

[0027] Furthermore, running wheels 5 can be provided on both sides of the base plate 1 as required.

[0028] When in use, the oil pipe is connected to the oil port 3, and the piston rod 12 rises when oil is supplied to the oil cylinder 2, driving the lifting claw 9 to rise. When oil is withdrawn from the cylinder 2, the piston rod 12 descends, driving the lifting claw 9 to descend. During the rising and descending process, one side of the lifting claw 9 always slides against the track housing 6, and the reinforcing ribs 10 on both sides slide and limit the two sides of the main track housing 6. This reduces the stability of the movement of the lifting claw, and cuts the lifting claw 9 to lift heavy objects at one end, and the other end against the track housing 6, so that the lifting claw 9 is bent under force, and it also avoids bumping against the wall of the oil cylinder 2, which generally improves the service life of the lifting claw 9 and the oil cylinder 2, and improves the stability of the jack during use.

[0029] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is limited by the appended claims and their equivalents.

Claims

1. An electric hydraulic claw jack, comprising a base plate (1), to which a cylinder (2) is fixedly connected, and a piston rod (12) is slidably arranged in the cylinder (2), characterized in that: The piston rod (12) is connected to a lifting claw (9) via a positioning sleeve (13); a track housing (6) is fixedly arranged on the outer circumferential wall of the oil cylinder (2); and one side of the lifting claw (9) is in sliding contact with the track housing (6).

2. An electric hydraulic claw jack according to claim 1, characterized in that: The track housing (6) is U-shaped, the lifting claw (9) is Z-shaped, and reinforcing ribs (10) are fixedly arranged on both sides of the lifting claw (9), and the reinforcing ribs (10) are in sliding contact with the side walls of the track housing (6).

3. The electric hydraulic claw jack according to claim 1, characterized in that: The bottom of the oil cylinder (2) is provided with a screw plug (14), the middle of the screw plug (14) is provided with a first sealing ring (15), the upper part of the oil cylinder (2) is sequentially installed with a dust ring (16), a first self-lubricating bearing (17), a second sealing ring (18), and a second self-lubricating bearing (19), the bottom of the piston rod (12) is fixedly connected to a clamping plate (20), a clamping groove is provided inside the oil cylinder (2), and the clamping plate (20) cooperates with the clamping groove to limit the position.

4. The electric hydraulic claw jack according to claim 1, characterized in that: An oil passage is provided at the lower side of the oil cylinder (2), and the oil passage informs an oil port (3) welded and fixed to the outer wall of the oil cylinder (2).

5. The electric hydraulic claw jack according to claim 1, characterized in that: A handle (4) is welded and fixed to the oil cylinder (2).

6. The electric hydraulic claw jack according to claim 2, characterized in that: A connecting pin (11) is fixed on each reinforcing rib plate (10), two connecting seats (8) are symmetrically arranged on the bottom plate (1), and a spring (7) is connected between each pin (11) and the connecting seat (8) on the same side.

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