CN210480727U

CN210480727U - Vertical oil pressure slow-lowering jack

Info

Publication number: CN210480727U
Application number: CN201921036271.7U
Authority: CN
Inventors: 杨军; 金建平; 赵国东
Original assignee: Jiaxing Jinrisheng Tools Co ltd
Current assignee: Jiaxing jinrisheng Tools Co., Ltd
Priority date: 2019-07-04
Filing date: 2019-07-04
Publication date: 2020-05-08
Anticipated expiration: 2029-07-04

Abstract

The utility model discloses a vertical oil pressure slow-lowering jack, which comprises a base, wherein an oil storage barrel is arranged on the base, a cylinder barrel is arranged in the oil storage barrel, the cylinder barrel and the oil storage barrel form an oil injection cavity, a piston rod assembly is connected in the cylinder barrel in a sliding way, a pump body is arranged on the base, a pump core is arranged in the pump body, a lifting hand is hinged on the pump core, the jack also comprises a connecting rod, a first oil return passage and a second oil return passage are arranged on the base, an overflow hole is arranged on the base, a first steel ball is filled in the overflow hole, and an; the base is provided with a first oil delivery duct, a second oil delivery duct and a composite stepped hole, a second steel ball is arranged in the second stepped hole, a third steel ball is arranged in the third stepped hole, a first plug is connected to the third stepped hole in a threaded manner, a first compression spring is arranged between the first plug and the third steel ball, the base is provided with an oil pump hole, and the oil pump hole is located between the second steel ball and the third steel ball. The jack has the characteristics of slow descending and convenient and fast maintenance.

Description

Vertical oil pressure slow-lowering jack

Technical Field

The utility model relates to a jack, more specifically say, it relates to a jack slowly falls in vertical oil pressure.

Background

The jack is light and small lifting equipment which takes a rigid jacking piece as a working device and jacks a heavy object through a top bracket or a bottom supporting claw within a small stroke. The jack is mainly used for the departments of factories, mines, transportation and the like as vehicle repair, other lifting, supporting and the like. The structure is light, firm, flexible and reliable, and can be carried and operated by one person.

The jacks are divided into a mechanical jack, a hydraulic jack and the like, and the principles are different. In principle, the most basic principle on which a hydraulic drive is based is pascal's law, i.e. the pressure is uniform throughout the liquid. Thus, in a balanced system, a relatively small piston exerts a relatively small pressure on it, while a large piston exerts a relatively large pressure on it, which keeps the liquid still. Therefore, different pressures at different ends can be obtained by the liquid transfer, and the purpose of conversion can be achieved. The common hydraulic jack uses the principle to achieve the force transmission. The screw jack pulls the handle in a reciprocating way, the claw pushes the ratchet wheel to rotate in a clearance way, the bevel pinion drives the bevel pinion to rotate the lifting screw rod, and therefore the lifting sleeve can be lifted or descended to achieve the function of lifting tension, but the screw jack is not as simple as a hydraulic jack.

However, the existing hydraulic jack is mainly an oil pressure type jack, an oil passage used during lifting is not communicated with an oil passage used during descending, and when the jack is maintained, the jack needs to be integrally disassembled, is inconvenient to disassemble and assemble, and is complicated and time-consuming in integral maintenance; and when the existing jack is used for unloading force, the descending speed is high, the safety is not high, and the overall effect is not good.

Therefore, the utility model provides a jack slowly falls in vertical oil pressure.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome not enough among the above-mentioned prior art, provide a jack slowly falls to vertical oil pressure, this jack has and descends slowly, maintains convenient characteristics.

In order to solve the technical problem, the purpose of the utility model is to realize like this: the utility model relates to a vertical oil pressure jack that slowly falls, including the base, be equipped with the oil storage cylinder on the base, be equipped with the cylinder in the oil storage cylinder, the cylinder with the isolated formation oil filling chamber of oil storage cylinder, sliding connection has the piston rod subassembly in the cylinder, still be equipped with the pump body on the base, sliding connection has the pump core in the pump body, and articulated on the pump core have the lifting hand, still include one end articulated lifting hand, the connecting rod of other end articulated base, set up the first oil return duct that communicates with the cylinder inside and the second oil return duct that communicates with the oil filling chamber inside on the base, set up the overflow hole that communicates with first oil return duct and second oil return duct on the base, be filled with in the overflow hole and block up the steel ball one of first oil return duct, threaded connection has the overflow valve of tip butt steel ball one on;

the base is provided with a first oil supply channel communicated with the inner part of the oil injection cavity, a second oil supply channel communicated with the inner part of the cylinder barrel, and a composite stepped hole communicated with the first oil supply channel and the second oil supply channel, the composite stepped hole comprises a first stepped hole communicated with the first oil supply channel, a third stepped hole communicated with the second oil supply channel, and a second stepped hole connected between the first stepped hole and the third stepped hole, the diameters of the first stepped hole, the second stepped hole and the third stepped hole are sequentially increased, the second stepped hole is internally provided with a second steel ball blocking the first stepped hole, the third stepped hole is internally provided with a third steel ball blocking the second stepped hole, the orifice of the third stepped hole is in threaded connection with a first plug, the end part of the first plug and the third steel ball are embedded with a first compression spring, the base is provided with an oil pump hole, one end of which is communicated with the second stepped hole, and the other end of which is communicated with the inner part of the pump body, the oil pump hole is positioned between the second steel ball and the third steel ball;

the base is provided with a balance oil duct penetrating through the second stepped hole, the base is further provided with a high-pressure hole penetrating through the first oil conveying duct and communicated with the balance oil duct, a steel ball IV for blocking the balance oil duct is filled in the high-pressure hole, an orifice of the high-pressure hole is in threaded connection with a second plug, and a second compression spring is embedded between the end of the second plug and the steel ball IV.

The utility model discloses further set up to: and a flow limiting block for moving up and down is arranged in the first oil return passage, and a third compression spring with one end abutting against the flow limiting block and the other end abutting against the bottom of the first oil return passage is arranged below the flow limiting block.

The utility model discloses further set up to: an oil filling hole communicated with the oil filling cavity is formed in the oil storage cylinder, and a plug body is embedded in the oil filling hole.

The utility model discloses further set up to: the plug body is a rubber plug.

The utility model discloses further set up to: the first oil delivery passage, the second oil delivery passage and the balance oil passage have the same extension direction.

To sum up, the utility model discloses following beneficial effect has:

1. oil used for lifting and unloading is finally collected into the oil injection cavity, oil passages for oil inlet and oil outlet are communicated with each other, so that conveying among the oil passages is facilitated, and the lifting and descending processes of the jack are more stable and stable;

2. the switching between the oil inlet channel and the oil outlet channel adopts a steel ball type one-way valve structure, so that one-way conduction is facilitated, and the disassembly and maintenance are more convenient;

3. the overflow valve is manually adjusted to conduct an oil return channel, oil in the cylinder barrel slowly flows back to the oil cavity, and the piston rod assembly which descends after force is relieved, so that the piston rod assembly descends slowly and the safety is high;

4. the oil storage cylinder is provided with an oil filling hole and is matched with a rubber plug, so that the oil in the oil storage cylinder can be conveniently replaced or increased or decreased;

5. the first oil delivery channel, the second oil delivery channel and the balance oil channel are positioned in the same direction of the base, so that the first oil delivery channel, the second oil delivery channel and the balance oil channel are convenient to arrange and process, and the manufacturing is quicker.

Drawings

FIG. 1 is a schematic structural view of an oil storage cylinder according to the present invention;

fig. 2 is a schematic structural diagram of the pump body according to the present invention;

fig. 3 is a schematic structural diagram for embodying the piston rod assembly of the present invention;

FIG. 4 is a schematic structural diagram of the pump cartridge of the present invention;

fig. 5 is a schematic perspective view of the base according to the present invention;

fig. 6 is a schematic top view of the base according to the present invention;

fig. 7 is a schematic view of the internal structure of the base according to the present invention;

FIG. 8 is a schematic cross-sectional view A-A of FIG. 7;

FIG. 9 is a schematic cross-sectional view B-B of FIG. 7;

FIG. 10 is a schematic cross-sectional view F-F of FIG. 7;

FIG. 11 is a schematic cross-sectional view of C-C of FIG. 7;

FIG. 12 is a schematic cross-sectional view D-D of FIG. 7;

FIG. 13 is a schematic cross-sectional view of E-E in FIG. 7;

description of reference numerals: 1. a base; 2. an oil storage cylinder; 3. a cylinder barrel; 4. an oil injection cavity; 5. a piston rod assembly; 6. a pump body; 7. a pump core; 8. lifting the hand; 9. a connecting rod; 10. a first oil return passage; 11. a second oil return passage; 12. an overflow aperture; 13. steel balls I; 14. an overflow valve; 15. a first oil delivery passage; 16. a second oil delivery passage; 17. a first stepped hole; 18. a second stepped bore; 19. a third stepped bore; 20. steel balls II; 21. steel balls III; 22. a first plug; 23. a first compression spring; 24. an oil pump bore; 25. a balancing oil passage; 26. a high pressure hole; 27. steel balls; 28. a second plug; 29. a second compression spring; 30. a flow limiting block; 31. a third compression spring; 32. an oil filling hole; 33. a plug body.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the following description of the preferred embodiments of the present invention is provided in conjunction with the specific examples, but it should be understood that these descriptions are only for the purpose of further illustrating the features and advantages of the present invention, and are not intended to limit the patent requirements of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The invention will be further described with reference to the accompanying drawings and preferred embodiments.

Referring to fig. 1 to 13, the vertical hydraulic slow-lowering jack according to the present embodiment includes a base 1, an oil storage cylinder 2 is disposed on the base 1, a cylinder 3 is disposed in the oil storage cylinder 2, the cylinder 3 is isolated from the oil storage cylinder 2 to form an oil injection cavity 4, the cylinder barrel 3 is connected with a piston rod assembly 5 in a sliding way, the base 1 is also provided with a pump body 6, the pump body 6 is connected with a pump core 7 in a sliding way, the pump core 7 is hinged with a lifting hand 8, the cylinder barrel also comprises a connecting rod 9, one end of the connecting rod is hinged with the lifting hand 8, the other end of the connecting rod is hinged with the base 1, the base 1 is provided with a first oil return passage 10 communicated with the inside of the cylinder 3 and a second oil return passage 11 communicated with the inside of the oil injection cavity 4, an overflow hole 12 communicated with the first oil return channel 10 and the second oil return channel 11 is formed in the base 1, a first steel ball 13 for blocking the first oil return channel 10 is filled in the overflow hole 12, and an overflow valve 14 with the end part abutting against the first steel ball 13 is in threaded connection with the overflow hole 12;

the base 1 is provided with a first oil supply channel 15 communicated with the inside of the oil injection cavity 4, a second oil supply channel 16 communicated with the inside of the cylinder barrel 3, and a composite stepped hole communicated with the first oil supply channel 15 and the second oil supply channel 16, the composite stepped hole comprises a first stepped hole 17 communicated with the first oil supply channel 15, a third stepped hole 19 communicated with the second oil supply channel 16, and a second stepped hole 18 connected between the first stepped hole 17 and the third stepped hole 19, the diameters of the first stepped hole 17, the second stepped hole 18 and the third stepped hole 19 are sequentially increased, a second steel ball 20 for blocking the first stepped hole 17 is arranged in the second stepped hole 18, a third steel ball 21 for blocking the second stepped hole 18 is arranged in the third stepped hole 19, a first plug 22 is in threaded connection with an orifice of the third stepped hole 19, a first compression spring 23 is embedded between the end of the first plug 22 and the third steel ball 21, an oil pump hole 24 with one end communicated with the second stepped hole 18 and the other end communicated with the interior of the pump body 6 is formed in the base 1, and the oil pump hole 24 is positioned between the second steel ball 20 and the third steel ball 21;

the oil-gas separation device is characterized in that a balance oil duct 25 penetrating through the second stepped hole 18 is formed in the base 1, a high-pressure hole 26 penetrating through the first oil delivery duct 15 and communicated with the balance oil duct 25 is further formed in the base 1, a steel ball IV 27 blocking the balance oil duct 25 is filled in the high-pressure hole 26, a plug II 28 is connected to an orifice of the high-pressure hole 26 in a threaded mode, and a compression spring II 29 is embedded between the end portion of the plug II 28 and the steel ball IV 27.

a. The lifting working principle of the piston rod assembly is as follows: firstly, a proper amount of oil is added into the oil injection cavity 4, the steel ball 13 is in a state of blocking the first oil return passage 10, so that the first oil return passage 10 is not communicated with the second oil return passage 11, the lifting hand 8 is pressed up and down, the pump core 7 slides up and down in the pump body 6 through traction transmission of the connecting rod 9, when the pump core 7 slides up, the oil pump hole 24 forms upward pumping force to attract the steel ball II 20 and the steel ball III 21, the steel ball III 21 is limited by the second stepped hole 18 and cannot move, so that the steel ball II 20 moves to the steel ball III 21 side, the oil pump hole 24 and the first oil supply passage 15 are communicated, and the oil in the oil injection cavity 4 is pumped into the first stepped hole 17 and the second stepped hole 18 and flows into the pump body 6 along the oil pump hole 24;

when the pump core 7 slides downwards, the oil pump hole 24 forms downward thrust to push the second steel ball 20 and the third steel ball 21 away, the second steel ball 20 is pushed to block the first stepped hole 17, the third steel ball 21 is also pushed to open the third stepped hole 19, wherein the first compression spring 23 is partially extruded and deformed to conduct the oil pump hole 24 and the second oil delivery channel 16, so that oil in the oil injection cavity 4 is pushed into the second stepped hole 18 and the third stepped hole 19 and is delivered into the cylinder barrel 3 along the second oil delivery channel 16, the oil in the cylinder barrel 3 is increased, and the pressure of the oil is increased, so that the piston rod assembly 5 is lifted;

when the pump core 7 slides downwards, part of pressure is conveyed along the balance oil passage 25, the steel balls 27 in the high-pressure hole 26 are pushed open, and the pressure between the oil injection cavity 4 and the pump body 6 is balanced.

b. The descending working principle of the piston rod assembly is as follows: firstly, the pump body 6, the pump core 7, the lifting handle 8 and the connecting rod 9 are in a static state, the piston rod assembly 5 is lifted, the steel ball two 20 is in a state of blocking the first stepped hole 17, the steel ball three 21 is in a state of blocking the second stepped hole 18, if oil in the cylinder 3 flows back from the second oil supply channel 16, the oil cannot flow back due to being blocked by the steel ball three 21, so that the piston rod assembly 5 cannot descend, therefore, the overflow valve 14 needs to be manually opened, the steel ball one 13 cannot block the first oil return channel 10, the first oil return channel 10 is communicated with the second oil return channel 11, the oil in the cylinder 3 sequentially passes through the first oil return channel 10 and the second oil return channel 11, and finally slowly flows back into the oil cavity 4, and the piston rod assembly 5 descends.

Further, a flow limiting block 30 for moving up and down is arranged in the first oil return passage 10, and a third compression spring 31 is arranged below the flow limiting block 30, wherein one end of the third compression spring abuts against the flow limiting block 30, and the other end of the third compression spring abuts against the bottom of the first oil return passage 10. When the piston rod assembly 5 descends, the first oil return passage 10 is opened by the first steel ball 13, so that the internal oil pressure and the external oil pressure are unequal, the third compression spring 31 carries the flow limiting block 30 to float upwards, and oil penetrates through the flow limiting block 30, permeates into the first oil return passage 10, passes through the second oil return passage 11 and slowly flows back into the oil injection cavity 4, so that the effect of slowing back flow is achieved.

Furthermore, an oil filling hole 32 communicated with the oil filling cavity 4 is formed in the oil storage cylinder 2, and a plug body 33 is embedded in the oil filling hole 32; preferably, the plug body 33 is a rubber plug. The oil storage cylinder 2 is provided with an oil filling hole 32 and is matched with a rubber plug, so that the oil in the oil storage cylinder 2 can be conveniently replaced or increased or decreased.

Furthermore, the first oil delivery duct 15, the second oil delivery duct 16 and the balance oil duct 25 have the same extending direction, and the first oil delivery duct 15, the second oil delivery duct 16 and the balance oil duct 25 are located in the same direction of the base 1, so that the machining is facilitated, and the manufacturing is quicker.

The utility model relates to a vertical oil pressure jack that slowly falls, through lifting and the oil that unloads the power and use finally all collect to the oiling intracavity, the oil duct that oil feed and produce oil switches on each other, the transport between the oil circuit of being convenient for jack lifting and decline process are more stable, steady; the switching between the oil inlet channel and the oil outlet channel adopts a steel ball type one-way valve structure, so that one-way conduction is facilitated, and the disassembly and maintenance are more convenient; the overflow valve is manually adjusted to conduct an oil return channel, oil in the cylinder barrel slowly flows back to the oil cavity, and the piston rod assembly which descends after force is relieved, so that the piston rod assembly descends slowly and the safety is high; the oil storage cylinder is provided with the oil filling hole and is matched with the rubber plug, so that the oil in the oil storage cylinder can be conveniently replaced or increased or decreased; the first oil delivery passage, the second oil delivery passage and the balance oil passage are positioned in the same direction of the base, so that the machining is convenient, and the manufacture is quicker.

Unless otherwise specified, in the present invention, if the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are used for illustrative purposes only, and should not be construed as limiting the present patent, specific meanings of the above terms can be understood by those of ordinary skill in the art in light of the specific circumstances in conjunction with the accompanying drawings.

Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass both fixed and removable connections, or integral connections; the connection may be direct or indirect via an intermediate medium, and may be a communication between the two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. Vertical oil pressure jack that slowly falls, including the base, be equipped with an oil storage section of thick bamboo on the base, be equipped with the cylinder in the oil storage section of thick bamboo, the cylinder with the isolated formation oil filling chamber of an oil storage section of thick bamboo, sliding connection has the piston rod subassembly in the cylinder, still be equipped with the pump body on the base, sliding connection has the pump core in the pump body, and articulated on the pump core have a lift hand, still include the articulated connecting rod that lifts hand, the articulated base of the other end of one end, its characterized in that: the base is provided with a first oil return passage communicated with the inside of the cylinder barrel and a second oil return passage communicated with the inside of the oil injection cavity, the base is provided with an overflow hole communicated with the first oil return passage and the second oil return passage, a first steel ball blocking the first oil return passage is filled in the overflow hole, and the overflow hole is in threaded connection with an overflow valve of which the end part is abutted against the first steel ball;

2. The vertical hydraulic slow-descending jack according to claim 1, wherein: and a flow limiting block for moving up and down is arranged in the first oil return passage, and a third compression spring with one end abutting against the flow limiting block and the other end abutting against the bottom of the first oil return passage is arranged below the flow limiting block.

3. The vertical hydraulic slow-lowering jack according to claim 1 or 2, wherein: an oil filling hole communicated with the oil filling cavity is formed in the oil storage cylinder, and a plug body is embedded in the oil filling hole.

4. The vertical hydraulic slow-descending jack according to claim 3, wherein: the plug body is a rubber plug.

5. The vertical hydraulic slow-descending jack according to claim 1, wherein: the first oil delivery passage, the second oil delivery passage and the balance oil passage have the same extension direction.