Low-position double-pump quick lifting jack

Abstract

The utility model relates to the technical field of jacks, in particular to a low-position double-pump quick lifting jack. The low-position double-pump quick lifting jack comprises a jack cylinder, an oil storage cylinder and a pump cylinder. The oil storage barrel is communicated with one end of the jack barrel, an inner oil cavity is formed in the oil storage barrel, and the interior of the jack barrel is divided into an outer oil cavity and a movable cavity through a partition plate. The number of the pump cylinders is two, one end of each pump cylinder is communicated with the interior of an outer oil cavity formed by the jack cylinder through the matching effect of an oil drainage pipe and an oil control pipe, and the other end of each pump cylinder is communicated with the interior of an inner oil cavity formed by the interior of the oil storage cylinder through an oil return pipe. According to the low-position double-pump quick-lifting jack, the two pump cylinders are arranged on one side of the jack cylinder at the same time, so that the circulation state of hydraulic oil in the outer oil cavity and hydraulic oil in the oil storage cylinder can be quickly changed; rapid operation of the hydraulic assembly in the movable cavity is accelerated, jack operation is conducted, and rapid pressure relief is conducted to recover to the initial state.

Description

Technical Field

[0001] The utility model relates to the technical field of jacks, in particular to a low-position double-pump fast-lifting jack. Background Art

[0002] A jack is a light and small lifting device 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 generally used in factories, mines, transportation and other departments for vehicle repairs and other lifting and supporting work.

[0003] Most of the jacks in the related art are single pump jacks. When operating, force is applied to the lever position to push the pump position assembly inside the pump body to operate, and the hydraulic oil in the outer cavity of the hydraulic cylinder is drawn into the pump body through the oil drain pipe. Then the lever position is operated again to push the hydraulic oil inside the pump body back into the hydraulic cylinder, pushing the piston inside the hydraulic cylinder to operate and perform the jacking operation.

[0004] The single pump top structure is simple in design and easy to operate, but the existing problems and defects are also obvious. The hydraulic oil inside the pump flows slowly whether it is pressurizing or depressurizing, which reduces the operating efficiency of the entire single pump top.

[0005] In view of the problems in the above background technology, the present invention aims to provide a low-position double-pump fast-lifting jack. Utility Model Content

[0006] The purpose of the utility model is to provide a low-position double-pump fast-lifting jack to solve the problems raised in the above background technology.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] A low-position double-pump quick-lifting jack, comprising:

[0009] A jack cylinder, an oil storage cylinder, and a pump cylinder. The oil storage cylinder is connected to one end of the jack cylinder. An inner oil chamber is formed inside the oil storage cylinder. The inner part of the jack cylinder is separated by a partition to form an outer oil chamber and an active chamber. The active chamber formed inside the jack cylinder and the inner oil chamber formed inside the oil storage cylinder are connected to each other. A hydraulic component is installed inside the active chamber. The outer oil chamber and the inner oil chamber are both filled with hydraulic oil.

[0010] There are two pump barrels, and one end of each pump barrel is connected to the interior of an outer oil chamber formed by the jack barrel through the cooperation of an oil drain pipe and an oil control pipe, and the other ends of each pump barrel are connected to the interior of an inner oil chamber formed inside the oil storage barrel through an oil return pipe; the oil control pipe forms an L right angle with the oil return pipe at the position where it is connected to the pump barrel, and a pump position assembly is movably installed inside the pump barrel.

[0011] As a further solution of the present invention: the hydraulic assembly includes a jack rod, a movable block and a piston, one end of the piston is sealed with the movable block, the piston and the movable block are both slidably installed inside the movable cavity, a jack rod is provided at the axial position on one side of the movable block, and one end of the jack rod passes through the inner wall of the jack cylinder.

[0012] As a further solution of the present invention: the pump position assembly includes a pump plug and a pump rod, a pump chamber is opened inside the pump barrel, a pump plug is slidably installed inside the pump chamber, a pump rod is provided at the axial position of one end of the pump plug, one end of the pump rod passes through the inner wall of the pump barrel, and a pump rod seal is installed in the pump barrel at the position after the pump rod passes through the inner wall of the pump barrel.

[0013] As a further solution of the present invention: an oil ball is installed inside the oil control pipe, an arc-shaped notch is formed at the position where the oil drain pipe and the oil control pipe are connected, and a filter cartridge is provided at the outlet position of the other end of the oil control pipe.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] Compared with the existing single pump jack, the low-position double pump fast lifting jack has the following advantages:

[0016] Two pump barrels are arranged on one side of the jack barrel. One end of the two pump barrels is connected to the inner part of the outer oil chamber formed by the jack barrel through the cooperation of the oil drain pipe and the oil control pipe. The other end of the two pump barrels is connected to the inner part of the inner oil chamber formed by the oil storage barrel through the oil return pipe.

[0017] In this way, when the low-position double-pump quick-lift jack is used for jacking operations, by arranging two pump barrels on one side of the jack barrel at the same time and controlling the operation of the pump position components installed inside the two pump barrels, the flow state of the hydraulic oil inside the external oil chamber and the hydraulic oil inside the oil storage barrel can be quickly changed, thereby accelerating the rapid operation of the hydraulic components inside the active chamber to perform jacking operations and quickly relieve pressure to restore to the initial state. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention.

[0019] Figure 1 The present invention is a schematic structural diagram of the initial state of a low-position double-pump fast lifting jack according to an embodiment of the present invention.

[0020] Figure 2 The figure is a schematic diagram of the operating structure of a low-position double-pump fast-lift jack according to an embodiment of the present utility model.

[0021] In the figure: 1-jack rod, 2-bearing, 3-jack cylinder, 4-external oil chamber, 5-partition, 6-movable chamber, 7-movable block, 8-piston, 9-oil drain pipe, 10-oil control pipe, 11-oil ball, 12-filter cartridge, 13-pump barrel, 14-pump plug, 15-pump chamber, 16-pump rod, 17-pump rod seal, 18-oil return pipe, 19-oil storage cylinder, 20-inner oil chamber. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] Example

[0024] See also Figure 1 and Figure 2 The embodiment of the present invention provides a low-position double-pump quick-lifting jack, which includes:

[0025] The jack cylinder 3, the oil storage cylinder 19 and the pump cylinder 13, the oil storage cylinder 19 is connected to one end of the jack cylinder 3, the inner oil chamber 20 is formed inside the oil storage cylinder 19, the outer oil chamber 4 and the movable chamber 6 are separated by a partition 5 inside the jack cylinder 3, the movable chamber 6 formed inside the jack cylinder 3 and the inner oil chamber 20 formed inside the oil storage cylinder 19 are connected to each other, a hydraulic component is installed inside the movable chamber 6, the outer oil chamber 4 and the inner oil chamber 20 are both filled with hydraulic oil, and the telescopic movement of the hydraulic component installed inside the movable chamber 6 can be achieved by changing the flow state of the hydraulic oil inside the inner oil chamber 20 and the outer oil chamber 4;

[0026] There are two pump barrels 13. One end of each pump barrel 13 is connected to the interior of the outer oil chamber 4 formed by the jack barrel 3 through the cooperation of the oil drain pipe 9 and the oil control pipe 10. The other end of each pump barrel 13 is connected to the interior of the inner oil chamber 20 formed inside the oil storage barrel 19 through the oil return pipe 18. The oil control pipe 10 forms an L-shaped right angle with the oil return pipe 18 at the position where it connects to the pump barrel 13. At the same time, a pump position assembly is movably installed inside the pump barrel 13.

[0027] In the embodiment of the present invention, by arranging two pump barrels 13 on one side of the jack barrel 3 at the same time and controlling the operation of the pump position components installed in the two pump barrels 13, the hydraulic oil in the external oil chamber 4 and the hydraulic oil in the oil storage barrel 19 can be quickly changed in the circulation state, thereby accelerating the rapid operation of the hydraulic components in the active chamber 6 to perform the jacking operation and quickly relieve the pressure to restore to the initial state;

[0028] In one embodiment of the present invention, the hydraulic assembly includes a jack rod 1, a movable block 7, and a piston 8. One end of the piston 8 is sealed with the movable block 7. The piston 8 and the movable block 7 are both slidably mounted inside the movable chamber 6. A jack rod 1 is provided at the axial position on one side of the movable block 7. One end of the jack rod 1 passes through the inner wall of the jack cylinder 3, and the jack cylinder 3 limits the passing jack rod 1 through the bearing 2 at the position where the jack rod 1 passes through.

[0029] In the embodiment of the present utility model, for example, when performing a jacking operation, after the hydraulic oil inside the outer oil chamber 4 is pushed into the inner oil chamber 20 by the two pump barrels 13, the flow rate of the hydraulic oil inside the inner oil chamber 20 increases, and the pressure is increased, which acts on the position of the piston 8, pushing the piston 8 to slide along the inside of the movable chamber 6, thereby driving the jack rod 1 set at the axial position of the movable block 7 installed on one side of the piston 8 to slide and displace, so as to perform the jacking operation; and during the sliding displacement of the jack rod 1, the bearing 2 is used to limit and position the sliding jack rod 1, so as to ensure that the position of the jack rod 1 is not easily offset during the sliding displacement;

[0030] See also Figure 1 and Figure 2 In one embodiment of the present invention, the pump position assembly includes a pump plug 14 and a pump rod 16. A pump chamber 15 is opened inside the pump barrel 13, and the pump plug 14 is slidably installed inside the pump chamber 15. A pump rod 16 is provided at the axial position of one end of the pump plug 14, and one end of the pump rod 16 passes through the inner wall of the pump barrel 13, and the pump barrel 13 is provided with a pump rod seal 17 at the position after the pump rod 16 passes through the inner wall of the pump barrel 13; in addition, the end portion of the pump rod 16 after passing through the inner wall of the pump barrel 13 is connected to a lever mechanism. The lever mechanism is a prior art and will not be further elaborated again. The main purpose of the lever mechanism is to act on the position of the pump rod 16 so that the pump rod 16 pulls the pump plug 14 to slide and displace inside the pump chamber 15, thereby causing oil suction and oil discharge operations inside the pump chamber 15;

[0031] In the embodiment of the present invention, for example, when oil suction is required, the pump plug 14 is pushed to slide inside the pump chamber 15, and the hydraulic oil temporarily stored in the outer oil chamber 4 flows into the pump chamber 15 through the oil drain pipe 9 and the oil control pipe 10. At this time, the oil control pipe 10 is in an open state;

[0032] When the pump chamber 15 is drained and the jack cylinder 3 is used for jacking, the pump plug 14 is pushed toward the bottom of the inner wall of the pump chamber 15, and the hydraulic oil temporarily stored in the pump chamber 15 is pushed into the inner oil chamber 20 through the oil return pipe 18, thereby increasing the pressure of the hydraulic oil in the inner oil chamber 20 and generating hydraulic thrust. At this time, the oil control pipe 10 acts as a one-way valve, preventing the hydraulic oil from entering the oil drain pipe 9 through the oil control pipe 10 and flowing back into the outer oil chamber 4.

[0033] Specifically, an oil ball 11 is installed inside the oil control pipe 10, an arc-shaped notch is formed at the position where the oil drain pipe 9 is connected to the oil control pipe 10, and a filter cartridge 12 is provided at the outlet position of the other end of the oil control pipe 10;

[0034] For example, when the hydraulic oil flowing out of the outer oil chamber 4 needs to enter the pump chamber 15, the oil ball 11 moves to the position of the filter cartridge 12, so that the hydraulic oil entering the oil control pipe 10 passes through the filter cartridge 12 and flows into the pump barrel 13; and when the hydraulic oil in the pump barrel 13 needs to be discharged into the inner oil chamber 20, so that the hydraulic oil in the inner oil chamber 20 increases and increases the pressure, part of the hydraulic oil in the pump chamber 15 first flows into the oil control pipe 10, pushing the oil ball 11 to move to the position of the connected arc-shaped gap, thereby blocking the position of the arc-shaped gap where the oil drain pipe 9 and the oil control pipe 10 are connected, and then the remaining hydraulic oil is gradually pushed into the inner oil chamber 20 through the oil return pipe 18;

[0035] In the description of this utility model, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A low-position double-pump quick-lift jack, comprising: The jack cylinder (3), the oil storage cylinder (19) and the pump cylinder (13) are characterized by: The oil storage cylinder (19) is connected to one end of the jack cylinder (3), and an inner oil chamber (20) is formed inside the oil storage cylinder (19). The inner part of the jack cylinder (3) is separated by a partition (5) to form an outer oil chamber (4) and a movable chamber (6). The movable chamber (6) formed inside the jack cylinder (3) and the inner oil chamber (20) formed inside the oil storage cylinder (19) are connected to each other. A hydraulic component is installed inside the movable chamber (6). The inner part of the outer oil chamber (4) and the inner oil chamber (20) are both filled with hydraulic oil. There are two pump barrels (13), one end of each of the two pump barrels (13) is connected to the interior of the outer oil chamber (4) formed by the jack barrel (3) through the cooperation of the oil drain pipe (9) and the oil control pipe (10), and the other end of each of the two pump barrels (13) is connected to the interior of the inner oil chamber (20) formed in the oil storage barrel (19) through the oil return pipe (18); The oil control pipe (10) and the oil return pipe (18) at the position connected to the pump barrel (13) form an L right angle, and a pump position component is movably installed inside the pump barrel (13).

2. The low-position double-pump quick-lift jack according to claim 1, characterized in that: The hydraulic assembly comprises a jack rod (1), a movable block (7) and a piston (8); one end of the piston (8) is sealedly connected to the movable block (7); the piston (8) and the movable block (7) are both slidably mounted inside the movable chamber (6); a jack rod (1) is provided at an axial position on one side of the movable block (7); and one end of the jack rod (1) passes through the inner wall of the jack cylinder (3).

3. The low-position double-pump quick-lift jack according to claim 1, characterized in that: The pump position assembly includes a pump plug (14) and a pump rod (16). A pump chamber (15) is provided inside the pump barrel (13). The pump plug (14) is slidably installed inside the pump chamber (15). A pump rod (16) is provided at the axial position of one end of the pump plug (14). One end of the pump rod (16) passes through the inner wall of the pump barrel (13), and a pump rod seal (17) is installed in the pump barrel (13) at a position after the pump rod (16) passes through the inner wall of the pump barrel (13).

4. The low-position double-pump quick-lift jack according to claim 1, characterized in that: An oil ball (11) is installed inside the oil control pipe (10), an arc-shaped notch is formed at the position where the oil drain pipe (9) is connected to the oil control pipe (10), and a filter cartridge (12) is provided at the outlet position of the other end of the oil control pipe (10).

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