Ultrathin movable jack

Abstract

The utility model relates to the technical field of jacks, in particular to an ultrathin movable jack which comprises a base, an oil tank is arranged on the top of the base, an oil cylinder is arranged on the top, located on one side of the oil tank, of the base, a plurality of sections of piston rods are arranged on the top of the oil cylinder in a sleeved mode, and a reversing valve seat is arranged on the top, located on the other side of the oil tank, of the base. A reversing valve is arranged on the top of the reversing valve seat, and a stop valve rod is arranged on one side of the reversing valve seat. A hand pump is arranged at the top, located on one side of the reversing valve seat, of the base. The jack combines the functions of self oil storage, double-acting lifting control, oil pressure control, jack movement and pressure maintaining, in order to meet the working conditions, shorten the height of the oil cylinder, reduce the appearance and enable the jack to be normally used, the original single-section piston rod in the oil cylinder is additionally changed into a multi-section piston rod, the working pressure is increased, and the working efficiency is improved. The working pressure used at present is 4-5 times of the conventional working pressure.

Description

Technical Field

[0001] The utility model relates to the technical field of jacks, in particular to an ultra-thin movable jack. Background Art

[0002] A jack is a small and light lifting equipment that uses a rigid lifting piece as a working device to lift heavy objects within a small stroke of the top support or bottom claws. Jacks are mainly used in factories, mines, transportation and other departments for vehicle repair and other lifting and supporting work. Its structure is light, strong, flexible and reliable, and can be carried and operated by one person.

[0003] At present, the existing mobile jacks are too thick and inconvenient to use in a small space. Therefore, an ultra-thin movable jack is proposed. Hydraulic oil enters the oil cylinder to push the multi-section piston rod to extend. The multi-section piston rod has a high working pressure and a low height after reset. Utility Model Content

[0004] In response to the problems in the prior art, the utility model provides an ultra-thin movable jack. Hydraulic oil enters the oil cylinder to push the multi-section piston rod to extend. The multi-section piston rod has a high working pressure and a low height after resetting.

[0005] The technical solution adopted by the utility model to solve the technical problem is an ultra-thin movable jack, comprising a base, an oil tank is provided on the top of the base, an oil cylinder is provided on the top of the base on one side of the oil tank, a multi-section piston rod is sleeved on the top of the oil cylinder, a reversing valve seat is provided on the top of the base on the other side of the oil tank, a reversing valve is provided on the top of the reversing valve seat, and a stop valve stem is provided on one side of the reversing valve seat;

[0006] A hand pump is provided at the top of the base located on one side of the reversing valve seat. The hand pump includes a hand pump base, a high-pressure plunger sleeve, a low-pressure plunger sleeve, a high-pressure plunger, and a low-pressure plunger. The hand pump base is provided at the top of the base located on one side of the reversing valve seat. The high-pressure plunger sleeve and the low-pressure plunger sleeve are respectively provided at the top of the hand pump base. The high-pressure plunger is provided inside the high-pressure plunger sleeve, and the low-pressure plunger is provided inside the low-pressure plunger sleeve.

[0007] By adopting the above technical solution, holding the handle shaft and swinging the corresponding low-pressure plunger or high-pressure plunger up and down, the hydraulic oil in the oil tank is transported to the oil cylinder through the reversing valve seat and the reversing valve through the low-pressure plunger sleeve and the high-pressure plunger sleeve, pushing the multi-section piston rod to extend.

[0008] Specifically, a connecting rod is provided on the top of the hand pump base, the top ends of the high-pressure plunger and the low-pressure plunger are fixed to the bottom of the connecting rod, and handle shafts are provided at both ends of one side of the connecting rod.

[0009] Specifically, a high-pressure regulating rod is provided inside the base, a fixed shaft is provided at one end of the top of the base, and a hand crank is sleeved on the top end of the fixed shaft.

[0010] Specifically, a reversing valve handle is provided on the top of the reversing valve.

[0011] Specifically, a filter is provided at the oil inlet on the top of the oil tank, a rear wheel is provided at one end of the base, and a traction shaft is fixed to the end of the base away from the rear wheel by bolts.

[0012] Specifically, the top of the multi-section piston rod is connected to a mechanical screw rod through a threaded groove.

[0013] Beneficial effects of the utility model:

[0014] The utility model describes an ultra-thin movable jack, in which hydraulic oil is transported from the oil tank through the reversing valve seat to the reversing valve, a reversing valve handle is provided on the reversing valve, when the multi-section piston rod needs to rise and maintain pressure, the stop valve stem is tightened, the reversing valve handle is placed in the rising position, the hand pump works, and the hydraulic oil is transported to the inside of the oil cylinder, causing the multi-section piston rod to rise; when there is a load on the top of the multi-section piston rod that needs to be lowered, the stop valve stem is loosened, the oil cylinder is depressurized, and the multi-section piston rod is slowly lowered; when the top of the multi-section piston rod is unloaded and under low weight, the multi-section piston rod cannot descend, and the reversing valve handle needs to be placed in the descending position, the stop valve stem is loosened, and the hydraulic oil is transported to the inside of the multi-section piston rod by the hand pump, and an oil return hole is provided inside the multi-section piston rod. The hydraulic oil reaches the multi-section piston rod from the base through the oil cylinder, causing the multi-section piston rod to slowly descend. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a side view of the utility model;

[0018] Figure 3 It is a top view of the utility model;

[0019] In the figure: 1. Base; 2. Oil tank; 3. Filter; 4. Hand pump base; 5. High-pressure plunger sleeve; 6. Low-pressure plunger sleeve; 7. High-pressure plunger; 8. Low-pressure plunger; 9. Connecting rod; 10. Handle shaft; 11. Hand crank; 12. Hand pump; 13. High-pressure regulating rod; 14. Traction shaft; 15. Rear wheel; 16. Fixed shaft; 17. Stop valve stem; 18. Reversing valve seat; 19. Reversing valve handle; 20. Reversing valve; 21. Oil cylinder; 22. Multi-section piston rod; 23. Mechanical screw. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] The hydraulic oil enters the oil cylinder to push the multi-section piston rod to extend. The multi-section piston rod has a high working pressure and a low height after reset. Figure 1-3 As shown, the ultra-thin movable jack described in the utility model includes a base 1, an oil tank 2 is provided on the top of the base 1, an oil cylinder 21 is provided on the top of the base 1 on one side of the oil tank 2, a multi-section piston rod 22 is sleeved on the top of the oil cylinder 21, a reversing valve seat 18 is provided on the top of the base 1 on the other side of the oil tank 2, a reversing valve 20 is provided on the top of the reversing valve seat 18, and a stop valve stem 17 is provided on one side of the reversing valve seat 18;

[0022] A hand pump 12 is provided at the top of the base 1 on the side of the reversing valve seat 18. The hand pump 12 includes a hand pump base 4, a high-pressure plunger sleeve 5, a low-pressure plunger sleeve 6, a high-pressure plunger 7, and a low-pressure plunger 8. The hand pump base 4 is provided at the top of the base 1 on the side of the reversing valve seat 18. The high-pressure plunger sleeve 5 and the low-pressure plunger sleeve 6 are respectively provided at the top of the hand pump base 4. The high-pressure plunger 7 is provided inside the high-pressure plunger sleeve 5, and the low-pressure plunger 8 is provided inside the low-pressure plunger sleeve 6.

[0023] When in use, hold the handle shaft 10 and swing the corresponding low-pressure plunger 8 or high-pressure plunger 7 up and down, and the hydraulic oil in the oil tank 2 is transported to the oil cylinder 21 through the low-pressure plunger sleeve 6 and the high-pressure plunger sleeve 5 through the reversing valve seat 18 and the reversing valve 20, pushing the multi-section piston rod 22 to extend.

[0024] For example, Figure 1 As shown, the present invention also includes that a connecting rod 9 is provided on the top of the hand pump base 4, the top ends of the high-pressure plunger 7 and the low-pressure plunger 8 are fixed to the bottom of the connecting rod 9, and handle shafts 10 are provided at both ends of one side of the connecting rod 9.

[0025] When in use, the handle shaft 10 can be swung up and down to drive the high-pressure plunger 7 or the low-pressure plunger 8 to move up and down.

[0026] For example, Figure 2 As shown, the present invention further includes: a high-pressure regulating rod 13 is provided inside the base 1; a fixed shaft 16 is provided at one end of the top of the base 1; and a hand crank 11 is sleeved on the top of the fixed shaft 16 .

[0027] When in use, the high-pressure regulating rod 13 cooperates with the hand pump 12 to control the oil pressure. When the hand crank 11 is idle, it can be sleeved on the outside of the fixed shaft 16.

[0028] For example, Figure 3 As shown, the present invention further includes that a reversing valve handle 19 is provided on the top of the reversing valve 20 .

[0029] When in use, the arrangement of the reversing valve handle 19 makes it convenient for people to hold and operate the reversing valve 20 .

[0030] For example, Figure 2 As shown, the utility model also includes that a filter 3 is provided at the oil inlet on the top of the oil tank 2, a rear wheel 15 is provided at one end of the base 1, and a traction shaft 14 is fixed to the end of the base 1 away from the rear wheel 15 by bolts.

[0031] When in use, the filter 3 can filter the hydraulic oil poured into the oil tank 2. When the hand crank 11 is fixed to the tail end of the handle shaft 10, the length of the handle shaft 10 is increased. When the hand crank 11 is inserted into the traction shaft 14, it can be used as a traction rod and cooperated with the rear wheel 15 to move the jack.

[0032] For example, Figure 2 As shown, the present invention further includes that the top of the multi-section piston rod 22 is connected to a mechanical screw rod 23 through a threaded groove.

[0033] When in use, the mechanical screw rod 23 is screwed onto the top of the multi-section piston rod 22 according to actual conditions, and the height of the mechanical screw rod 23 is adjusted by rotating, so that the construction height can be freely changed.

[0034] When the utility model is in use, the hydraulic oil is poured into the oil tank 2 through the filter 3, and the filter 3 can filter the impurities in the hydraulic oil;

[0035] The personnel hold the corresponding handle shaft 10 and move it up and down through the connecting rod 9, driving the corresponding high-pressure plunger 7 or low-pressure plunger 8 to move up and down, take out the hand crank 11 and fix it to the tail of the handle shaft 10, and swing the handle shaft 10 up and down through the hand crank 11 to absorb the hydraulic oil in the oil tank 2, saving time and effort;

[0036] When the stroke is empty and the load is low, the low-pressure plunger 6 is used to increase the flow rate and achieve rapid action; when the load is heavy, the high-pressure plunger 7 is used to save labor for the operator;

[0037] The hydraulic oil is transported from the oil tank 2 through the reversing valve seat 18 to the reversing valve 20. A reversing valve handle 19 is provided on the reversing valve 20. When the multi-section piston rod 22 needs to rise and maintain pressure, the stop valve stem 17 is tightened, the reversing valve handle 19 is placed in the rising position, the hand pump 12 works, and the hydraulic oil is transported to the inside of the oil cylinder 21, so that the multi-section piston rod 22 rises; when there is a load on the top of the multi-section piston rod 22 and it needs to be lowered, the stop valve stem 17 is loosened, the oil cylinder 21 is depressurized, and the multi-section piston rod 22 slowly descends; when the top of the multi-section piston rod 22 is unloaded and under low load, the multi-section piston rod 22 cannot descend, and the reversing valve handle 19 needs to be placed in the descending position, the stop valve stem 17 is loosened, and the hydraulic oil is transported to the inside of the multi-section piston rod 22 through the hand pump 12. An oil return hole is provided inside the multi-section piston rod 22, and the hydraulic oil reaches the multi-section piston rod 22 from the base 1 through the oil cylinder 21, so that the multi-section piston rod 22 slowly descends;

[0038] The stop valve stem 17 plays the role of maintaining and releasing pressure, and the reversing valve 20 controls the direction in which the hydraulic oil flows to the cylinder.

[0039] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An ultra-thin movable jack, characterized in that: The invention comprises a base (1), wherein an oil tank (2) is provided on the top of the base (1), an oil cylinder (21) is provided on the top of the base (1) on one side of the oil tank (2), a multi-section piston rod (22) is sleeved on the top of the oil cylinder (21), a reversing valve seat (18) is provided on the top of the base (1) on the other side of the oil tank (2), a reversing valve (20) is provided on the top of the reversing valve seat (18), and a stop valve rod (17) is provided on one side of the reversing valve seat (18); A hand pump (12) is provided on the top of the base (1) on one side of the reversing valve seat (18), and the hand pump (12) comprises a hand pump base (4), a high-pressure plunger sleeve (5), a low-pressure plunger sleeve (6), a high-pressure plunger (7), and a low-pressure plunger (8). The hand pump base (4) is provided on the top of the base (1) on the side of the reversing valve seat (18), the high-pressure plunger sleeve (5) and the low-pressure plunger sleeve (6) are respectively provided on the top of the hand pump base (4), the high-pressure plunger (7) is provided inside the high-pressure plunger sleeve (5), and the low-pressure plunger (8) is provided inside the low-pressure plunger sleeve (6).

2. The ultra-thin movable jack according to claim 1, characterized in that: A connecting rod (9) is provided on the top of the hand pump base (4); the top ends of the high-pressure plunger (7) and the low-pressure plunger (8) are fixed to the bottom of the connecting rod (9); and handle shafts (10) are provided at both ends of one side of the connecting rod (9).

3. The ultra-thin movable jack according to claim 1, characterized in that: A high-pressure regulating rod (13) is provided inside the base (1), a fixed shaft (16) is provided at one end of the top of the base (1), and a hand crank (11) is sleeved on the top end of the fixed shaft (16).

4. The ultra-thin movable jack according to claim 1, characterized in that: A reversing valve handle (19) is provided on the top of the reversing valve (20).

5. The ultra-thin movable jack according to claim 1, characterized in that: A filter (3) is provided at the oil inlet on the top of the oil tank (2), a rear wheel (15) is provided at one end of the base (1), and a traction shaft (14) is fixed to the end of the base (1) away from the rear wheel (15) via bolts.

6. The ultra-thin movable jack according to claim 1, characterized in that: The top of the multi-section piston rod (22) is connected to a mechanical screw rod (23) via a threaded groove.

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