CN218909720U

CN218909720U - Hydraulic jack capable of lifting in multiple directions

Info

Publication number: CN218909720U
Application number: CN202223216671.0U
Authority: CN
Inventors: 邵维嘉; 史晓明
Original assignee: Changshu Tongrun Auto Accessory Co Ltd
Current assignee: Changshu Tongrun Auto Accessory Co Ltd
Priority date: 2022-12-01
Filing date: 2022-12-01
Publication date: 2023-04-25
Anticipated expiration: 2032-12-01

Abstract

A hydraulic jack capable of lifting in multiple directions belongs to the technical field of jacks. Including base, jack body, the pump body, lift the hand, be equipped with the oil storage chamber in the jack body, be equipped with the working pump chamber in the pump body, processing has the oil absorption way of intercommunication oil storage chamber and working pump chamber on the base, characteristics are: the oil suction hole of the oil suction way is formed in the opposite side, the left side and the right side or any two directions of the lifting hand, the base is provided with a plug mounting hole communicated with the oil suction way, a plug assembly is arranged in the plug mounting hole, the plug assembly comprises an adjustable screw, a first sealing element and a second sealing element, the first sealing element is positioned between the oil suction way and the adjustable screw, the adjustable screw is screwed down, the first sealing element seals the oil suction way, the adjustable screw is unscrewed, and the oil suction way normally passes oil; and the second sealing piece is sleeved on the adjustable screw and positioned in the plug mounting hole and used for sealing the plug mounting hole. The advantages are that: the function that the same jack can meet the transverse use in different directions is realized.

Description

Hydraulic jack capable of lifting in multiple directions

Technical Field

The utility model belongs to the technical field of jacks, and particularly relates to a multidirectional lifting hydraulic jack.

Background

The existing vertical jack is normally vertically arranged and cannot be horizontally arranged. As shown in fig. 1, the jack includes a base 1, a jack body 2 and a pump body 3 mounted on the base 1, and a lifting hand 4 mounted on the pump body 3, an oil storage chamber and a working oil cylinder cavity are arranged in the jack body 2, a working pump cavity is arranged in the pump body 3, and an oil suction path 11 for leading hydraulic oil in the oil storage chamber into the working pump cavity and an oil inlet path 12 for leading hydraulic oil in the working pump cavity into the working oil cylinder cavity are arranged on the base 1. When the handle 41 is inserted into the lifting handle 4 and the handle 41 is lifted, hydraulic oil in the oil storage chamber is introduced into the working pump cavity through the oil suction way 11, and when the handle 41 is pressed down, the hydraulic oil in the working pump cavity is pressed into the working cylinder cavity through the oil inlet way 12, the hydraulic oil introduced into the working cylinder cavity lifts up a piston rod in the jack body 2, and then the weight above the piston rod is lifted up.

When the jack needs to be used horizontally, the oil suction hole 111 may be located outside the oil in the oil storage chamber, so that the oil in the oil storage chamber cannot be sucked by the oil suction hole 111, if a plurality of oil suction holes 111 are opened at different positions, the oil suction hole 111 closest to the oil path of the pump body 3 must be ensured to be below the oil surface when the jack is used horizontally, otherwise, the oil suction path 11 cannot work normally. However, when the pump is used horizontally, most of the oil suction holes 111 cannot suck oil above the hydraulic oil, so that the oil can flow back into the oil storage chamber from the oil suction holes, and the inside of the pump body cannot suck the hydraulic oil. That is, the oil suction hole 111 in the oil suction path 11 must be below the oil level to suck oil smoothly, and if the oil suction hole cannot be below the oil level, the jack cannot perform the functions of standing and lying at the same time. Therefore, the oil suction hole 111 needs to be arranged as close to the outer edge of the oil storage chamber as possible, and when the jack is installed close to the ground on one side close to the oil suction hole, the oil suction hole can be ensured to be always positioned below the oil surface when a heavy object is jacked, so that the horizontal type use in the direction can be realized, and the single-direction vertical and horizontal type use of the jack is specifically described as follows:

as shown in fig. 2a and 2b, when the oil suction hole 111 is located near the lifting hand 4, and when the jack is horizontally placed, only when the pressing hand 4 is near the ground 100, the oil suction hole 111 is near the ground 100, so that the vertical and horizontal dual-purpose can be achieved, and when the other three directions, namely the horizontal installation on the opposite side, the left side and the right side of the lifting hand 4, are lower than the oil storage surface, the oil suction hole 111 causes hydraulic oil to not normally enter the pump body 3 through the oil suction channel 11, so that the other three directions of the jack cannot be transversely used.

As shown in fig. 3a and 3b, when the oil suction hole 111 is located on the right side of the lifting hand 4, and when the jack is horizontally placed, only when the side surface of the jack located on the right side of the lifting hand 4 is close to the ground 100, the oil suction hole 111 is close to the ground 100, so that the vertical and horizontal dual-purpose can be achieved, and the oil storage surfaces in the other three directions are lower than the oil suction hole 111, so that hydraulic oil cannot normally enter the pump body 3 through the oil suction channel 11, and the other three directions of the jack cannot be laterally used.

As shown in fig. 4a and fig. 4b, when the oil suction hole 111 is located at the left side of the lifting hand 4, and when the jack is horizontally placed, only when the side surface of the jack located at the left side of the lifting hand 4 is close to the ground 100, the oil suction hole 111 is close to the ground 100, so that the vertical and horizontal dual-purpose can be achieved, and the oil storage surfaces in the other three directions are lower than the oil suction hole 111, so that hydraulic oil cannot normally enter the pump body 3 through the oil suction channel 11, and the other three directions of the jack cannot be laterally used.

As shown in fig. 5a and 5b, when the oil suction hole 111 is located at the opposite side of the lifting hand 4, and when the jack is horizontally placed, only when the opposite side of the pressing hand 4 is close to the ground 100, the oil suction hole 111 is close to the ground 100, so that the vertical and horizontal dual-purpose can be achieved, and the oil storage surfaces in the other three directions are lower than the oil suction hole 111, so that hydraulic oil cannot normally enter the pump body 3 through the oil suction channel 11, and the other three directions of the jack cannot be horizontally used.

If the oil paths in the four directions are combined, the three oil suction holes 111 are positioned outside the hydraulic oil in any direction, so that the pump body 3 cannot suck oil, and the oil suction paths of the existing jack are required to be improved to realize horizontal use in multiple directions of the jack. To this end, the applicant has made an advantageous design, and the technical solutions described below are produced in this context.

Disclosure of Invention

The utility model aims to provide a multi-direction lifting hydraulic jack, which can realize the function of transversely using the same jack in different directions through the structural design of an oil way, and has the advantages of simple structure, convenient operation, safety and reliability.

The utility model accomplishes the task like this, a hydraulic jack lifted in multiple directions, including the base, jack body and pump body installed on base, lifting hand installed on pump body, there are oil storage chambers and working cylinder chambers in the said jack body, there are working pump chambers in the said pump body, the position corresponding to oil storage chamber of the said base has oil-absorbing holes, the position corresponding to working pump chamber of the said base has oil-absorbing holes of the pump body, the said base has oil-absorbing way to connect oil-absorbing hole and oil-absorbing hole of the pump body, suck the hydraulic oil from the oil storage chamber into the working pump chamber, the characteristic is: the oil suction hole is formed in the opposite side, the left side and the right side of the lifting hand or any two of the three directions, the base is provided with a plug mounting hole communicated with the oil suction passage, a plug assembly is arranged in the plug mounting hole in the direction of the oil suction passage, the plug assembly comprises an adjustable screw, a first sealing element and a second sealing element, the adjustable screw is screwed in from the plug mounting hole, the first sealing element is positioned between the oil suction passage and the adjustable screw, the adjustable screw is screwed down, the first sealing element seals the oil suction passage, the adjustable screw is unscrewed, and the oil suction passage normally passes oil; and the second sealing element is sleeved on the screw head of the adjustable screw and is positioned in the plug mounting hole and used for sealing the plug mounting hole.

In a specific embodiment of the present utility model, the second sealing member is an O-ring, and the O-ring is sleeved on the outer ring of the screw head of the adjustable screw.

In another specific embodiment of the utility model, the oil suction path is provided with a step hole, the first sealing element comprises a steel ball and a spring, the steel ball and the adjustable screw are sequentially arranged along the step hole from inside to outside, the spring is embedded in the oil suction path, one end of the spring is pressed against the step surface of the step hole, the other end of the spring is pressed against the steel ball, the steel ball is positioned between the spring and the adjustable screw, when the adjustable screw is screwed down, the steel ball blocks the step hole, hydraulic oil in the oil storage cavity cannot be sucked into the working pump cavity through the oil suction path to form a sealing structure, and the oil suction path is closed; when the adjustable screw is unscrewed, the steel ball is separated from the step hole under the pushing of the elasticity of the spring, so that the oil suction way can normally run.

In another specific embodiment of the utility model, the oil suction path is provided with a step hole, the first sealing element is a nylon pad sleeved on the outer ring of the end part of the screw rod of the adjustable screw, one end of the nylon pad is pressed against one step surface of the step hole, the other end of the nylon pad is pressed against the step surface of the screw rod of the adjustable screw, when the adjustable screw is screwed down, the nylon pad and the screw rod of the adjustable screw jointly block the step hole of the oil suction path, hydraulic oil in the oil storage cavity cannot be sucked into the working pump cavity through the oil suction path to form a sealing structure, and the oil suction path is closed; when the adjustable screw is unscrewed, the nylon pad and the adjustable screw leave the step hole of the oil suction path, so that the oil suction path can normally run.

In still another specific embodiment of the present utility model, the oil suction hole includes a first oil suction hole located at an opposite side of the lifting hand, a second oil suction hole located at a right side of the lifting hand, and a third oil suction hole located at a left side of the lifting hand, and the oil suction path includes a first oil suction path communicating the first oil suction hole with the pump body oil suction hole, a second oil suction path communicating the second oil suction hole with the pump body oil suction hole, and a third oil suction path communicating the third oil suction hole with the pump body oil suction hole, and the first oil suction path, the second oil suction path, and the third oil suction path are all sucked into the pump body through the pump body oil suction hole.

In still another specific embodiment of the present utility model, the first oil suction path includes an oil path a, an oil path AA and an oil path BA which are sequentially communicated, the second oil suction path includes an oil path B, an oil path AB and an oil path BA which are sequentially communicated, the third oil suction path includes an oil path C, an oil path AC and an oil path BA which are sequentially communicated, one end of the oil path a is communicated with the first oil suction hole, one end of the oil path B is communicated with the second oil suction hole, the oil path C is communicated with the third oil suction hole, the oil path BA is communicated with the pump body oil suction hole, and the oil paths AA, AB and AC are all converged together to be introduced into the working pump cavity from the oil path BA.

In a further particular embodiment of the utility model, the oil passages a, BA are perpendicular to the oil passage AA, the oil passages B, BA are perpendicular to the oil passage AB, and the oil passages C, BA are perpendicular to the oil passage AC.

In a further specific embodiment of the utility model, the oil passages AA, AB, AC form a cross shape, converging in the center of the cross.

In yet another further specific embodiment of the present utility model, the oil passage AA, the oil passage AB, the oil passage AC are arranged separately until the oil passages BA converge.

In yet another specific embodiment of the present utility model, the plug assembly is installed at a first communication where the oil passage a and the oil passage AA intersect, a second communication where the oil passage B and the oil passage AB intersect, and a third communication where the oil passage C and the oil passage AC intersect.

The utility model has the beneficial effects that due to the adoption of the structure, the utility model has the following advantages: the oil suction holes are formed in the opposite sides, the left side and the right side of the lifting hand of the jack base, and then oil suction paths communicated with the oil suction holes are processed, so that the jack can be used horizontally in three directions, when the jack is used, only two plug assemblies far away from the ground are needed to be blocked, the jack structure mainly achieves the function that the same jack can meet transverse use in different directions through the structural design of an oil path, and the jack structure is simple in structure, convenient to operate, safe and reliable.

Drawings

Fig. 1 is a perspective view of a jack according to the prior art.

Fig. 2a is a schematic diagram of an arrangement of oil suction holes in a jack according to the prior art.

Fig. 2b is a schematic view of a horizontal use of the conventional jack according to fig. 2 a.

Fig. 3a is a schematic view of another arrangement of oil suction holes in a jack according to the prior art.

Fig. 3b is a schematic view of a horizontal use of the conventional jack according to fig. 3 a.

Fig. 4a is a schematic view of another arrangement of oil suction holes in a jack according to the prior art.

Fig. 4b is a schematic view of a horizontal use of the conventional jack according to fig. 4 a.

Fig. 5a is a schematic view of still another arrangement of oil suction holes in a jack according to the prior art.

Fig. 5b is a schematic view of a horizontal use of the conventional jack according to fig. 5 a.

Fig. 6 is a top view of the multi-directional lifting hydraulic jack of the present utility model.

Fig. 7 is a schematic view showing the arrangement of the oil suction path on the base of the multi-directional lifting hydraulic jack according to the present utility model.

Fig. 8a is a schematic view of an embodiment of a plug assembly according to the present utility model in a screw-down state.

Fig. 8b is a schematic view of an embodiment of the plug assembly according to the present utility model in a unscrewed state.

Fig. 9a is a schematic view of another embodiment of the plug assembly according to the present utility model in a screw-down condition.

Fig. 9b is a schematic view of another embodiment of the plug assembly according to the present utility model in a unscrewed state.

Fig. 10a is a cross-sectional view of AA-AA of fig. 6.

Fig. 10b is a cross-sectional view AB-AB of fig. 6.

Fig. 10c is an AC-AC cross-sectional view of fig. 6.

In the figure: 1. base, 11, oil suction path, 110, one-way valve one, 1101, first oil suction path, 1102, second oil suction path, 1103, third oil suction path, 111, oil suction hole, 1111, first oil suction hole, 1112, second oil suction hole, 1113, third oil suction hole, 112, pump body oil suction hole, 113, step hole, 12, oil inlet path, 120, one-way valve two, 121, oil inlet hole, 122, pump body oil inlet hole. 2. The jack comprises a jack body, a jack 21, an oil cylinder, a jacket 22, a piston rod 23 and a piston 231; 3. pump body, 31. Pump core; 4. lifting a handle 41; 5. plug assembly, 51, adjustable screw, 511, screw head, 512, screw rod, 52, first sealing element, 521, steel ball, 522, spring, 523, nylon cushion, 53, second sealing element; 10. an oil storage chamber; 20. a working cylinder chamber; 30. a working pump chamber; 40. a first communication point; 50. a second communication point; 60. a third communication point; 70. a plug mounting hole; 100. ground surface.

Detailed Description

The following detailed description of specific embodiments of the utility model, taken in conjunction with the accompanying drawings, is not intended to limit the scope of the utility model, but rather should be construed to cover any and all modifications that may fall within the spirit and scope of the utility model.

In the following description, any reference to the directions or azimuths of up, down, left, right, front and rear is based on the positions shown in the corresponding drawings, and therefore, should not be construed as a limitation on the technical solutions provided by the present utility model.

Referring to fig. 10a to 10c, the present utility model relates to a hydraulic jack with multi-directional lifting, which comprises a base 1, a jack body 2 and a pump body 3 mounted on the base 1, and a lifting hand 4 mounted on the pump body 3, wherein the jack body 2 comprises an oil cylinder 21, an outer sleeve 22 and a piston rod 23, the oil cylinder 21 is mounted on the base 1, the outer sleeve 22 is sleeved outside the oil cylinder 21, the outer sleeve 22 is also mounted on the base 1, and an oil storage cavity 10 is formed between the inner circle of the outer sleeve 22 and the outer circle of the oil cylinder 21. The piston rod 23 moves along the oil cylinder 21, the bottom end of the piston rod 23 is positioned in the oil cylinder 21, the bottom end part of the piston rod is provided with a piston 231, the piston 231 is closely matched with a cylinder cavity of the oil cylinder 21, and the cylinder cavity below the piston 231 is formed into a working cylinder cavity 20.

The bottom end of the pump body 3 is connected with the base 1, the internal cavity of the pump body 3 is a pump cavity, a pump core 31 capable of moving along the pump cavity is arranged in the pump cavity, and the pump cavity below the pump core 31 is formed into a working pump cavity 30. The lifting handle 4 can be inserted with a spanner, and the spanner can be pulled to move the pump core 31 up and down.

The oil storage cavity 10 is communicated with the working pump cavity 30 through an oil suction path 11, and a one-way valve I110 which only allows oil in the oil storage cavity 10 to pass to the working pump cavity 30 is arranged on the oil suction path 11. The working cylinder chamber 20 and the working pump chamber 30 are communicated through the oil inlet path 12, and a second check valve 120 which only allows the hydraulic oil in the working pump chamber 30 to pass to the working cylinder chamber 20 is arranged on the oil inlet path.

When the pump core 31 moves away from the base 1, the first check valve 110 is opened, the second check valve 120 is closed, and the hydraulic oil in the oil storage cavity 10 is sucked into the working pump cavity 30; when the pump core 31 moves toward the direction approaching the base 1, the second check valve 120 is opened, the first check valve 110 is closed, hydraulic oil in the working pump chamber 30 is pressed into the working cylinder chamber 20, the hydraulic oil pressed into the working cylinder chamber 20 lifts the piston 231 and the piston rod 23, and then the weight above the piston rod 23 is lifted.

As shown in fig. 7, 10a to 10c, the oil suction passage 11 and the oil inlet passage 12 are both formed in the base 1. The base 1 is provided with an oil suction hole 111 at a position corresponding to the oil storage cavity 10, the base 1 is provided with a pump body oil suction hole 112 at a position corresponding to the working pump cavity 30, and the oil suction passage 11 is communicated with the oil suction hole 111 and the pump body oil suction hole 112 to suck hydraulic oil from the oil storage cavity 10 into the working pump cavity 30. In this embodiment, three oil suction holes 111 are formed, which are a first oil suction hole 1111 located on the opposite side of the lifting hand 4, a second oil suction hole 1112 located on the right side of the lifting hand 4, and a third oil suction hole 1113 located on the left side of the lifting hand 4.

Corresponding to the three oil suction holes 111, the oil suction path 11 includes a first oil suction path 1101 communicating the first oil suction hole 1111 with the pump body oil suction hole 112, a second oil suction path 1102 communicating the second oil suction hole 1112 with the pump body oil suction hole 112, and a third oil suction path 1103 communicating the third oil suction hole 1113 with the pump body oil suction hole 112, where the first oil suction path 1101, the second oil suction path 1102, and the third oil suction path 1103 are all sucked into the pump body 3 through the pump body oil suction hole 112. More specifically, the first oil suction path 1101 includes an oil path a, an oil path AA, and an oil path BA that are sequentially communicated, the second oil suction path 1102 includes an oil path B, an oil path AB, and an oil path BA that are sequentially communicated, and the third oil suction path 1103 includes an oil path C, an oil path AC, and an oil path BA that are sequentially communicated. One end of the oil way A is communicated with the first oil suction hole 1111, one end of the oil way B is communicated with the second oil suction hole 1112, the oil way C is communicated with the third oil suction hole 1113, the oil way BA is communicated with the pump body oil suction hole 112, and the oil way AA, the oil way AB and the oil way AC are finally converged together and are led into the working pump cavity 30 from the oil way BA, so that the oil way AA, the oil way AB and the oil way AC are mutually communicated, a cross shape is formed as shown in fig. 7, and the oil way AA, the oil way AB and the oil way AC are converged in the center of the cross shape. The oil passage AA, the oil passage AB, and the oil passage AC may be separately arranged until the oil passage BA is not converged. The first check valve 110 is installed in the oil path BA. Preferably, the oil path A and the oil path BA are perpendicular to the oil path AA, the oil path B and the oil path BA are perpendicular to the oil path AB, and the oil path C and the oil path BA are perpendicular to the oil path AC.

As shown in fig. 7 and 10a, the base 1 is provided with an oil inlet hole 121 at a position corresponding to the working cylinder cavity 20, the base 1 is provided with a pump body oil inlet hole 122 at a position corresponding to the working pump cavity 30, and the oil inlet path 12 is communicated with the oil inlet hole 121 and the pump body oil inlet hole 122 to press hydraulic oil from the working pump cavity 30 into the working cylinder cavity 20. More specifically, the oil inlet path 12 includes oil paths BB, BC, BD that are sequentially connected, the oil path BD is connected to the oil inlet hole 121, and the oil path BB is connected to the pump body oil inlet hole 122. Preferably, the oil path BD is perpendicular to the oil path BC, the oil path BB is perpendicular to the oil path BC, and the second check valve 120 is installed in the oil path BD.

As shown in fig. 7 and 10a to 10b, the plug assemblies 5 are installed on the oil paths before the first oil suction path 1101, the second oil suction path 1102 and the third oil suction path 1103 are not converged, when the plug assemblies 5 plug the oil path, the oil path is closed, and the oil storage chamber 10 cannot be sucked into the working pump chamber 30 through the oil suction path 11. The plug assembly 5 is arranged on the oil paths before the oil suction paths 11 are not converged, and the on-off of each oil suction path 11 is independently controlled, so that the function of transversely using a single jack in different directions is realized. The base 1 is provided with a plug mounting hole 70 communicated with the oil suction channel 11, a plug assembly 5 is arranged in the plug mounting hole 70 towards the direction of the oil suction channel 11, the plug assembly 5 comprises an adjustable screw 51, a first sealing element 52 and a second sealing element 53, the adjustable screw 51 is screwed in from the plug mounting hole 70, the first sealing element 52 is positioned between the oil suction channel 11 and the adjustable screw 51, the adjustable screw 51 is screwed, the first sealing element 52 seals the oil suction channel 11, the adjustable screw 51 is unscrewed, and the oil suction channel 11 normally supplies oil; the second sealing member 53 is sleeved on the adjustable screw 51 and is located in the plug mounting hole 70, and is used for sealing the plug mounting hole 70, and when the oil suction paths 11 are normally connected, hydraulic oil cannot flow to the outer side of the base 1.

More specifically, the plug assembly 5 is installed at a first communication place 40 where the oil passage a and the oil passage AA intersect, a second communication place 50 where the oil passage B and the oil passage AB intersect, and a third communication place 60 where the oil passage C and the oil passage AC intersect. Further, the first sealing member 52 is located at the first communication position 40, the second communication position 50 and the third communication position 60, and when the adjustable screw 51 is screwed down, the first sealing member 52 is pushed against a hole surface matched with the first sealing member 52 in the oil path, so that a sealing structure is formed, and the oil path is closed. When the adjustable screw 51 is unscrewed, the first sealing element 52 is separated from the hole surface matched with the first sealing element 52 in the oil way, so that the oil way can normally communicate oil.

The specific structure of the plug assembly 5 is further described by the following two embodiments:

examples

In this embodiment, as shown in fig. 8a and 8b, the second sealing member 53 is an O-ring, and the O-ring is sleeved on the outer ring of the screw head 511 of the adjustable screw 51. The first seal 52 includes a steel ball 521 and a spring 522. The oil suction path 11 is provided with a stepped hole 113, and a spring 522, a steel ball 521 and an adjustable screw 51 are sequentially arranged along the direction from inside to outside of the stepped hole 113. Specifically, the spring 522 is embedded in the oil suction path 11, one end of the spring 522 is pressed against the step surface, the other end of the spring 522 is pressed against the steel ball 521, and the steel ball 521 is located between the spring 522 and the adjustable screw 51. When the adjustable screw 51 is screwed down, as shown in fig. 8a, the steel ball 521 blocks the stepped hole 113, hydraulic oil in the oil storage chamber 10 cannot be sucked into the working pump chamber 30 through the oil suction passage 11, a sealing structure is formed, and the oil suction passage 11 is closed. When the adjustable screw 51 is unscrewed, as shown in fig. 8b, the steel ball 521 is separated from the stepped hole 113 by the elastic force of the spring 522, so that the oil suction path 11 can be operated normally.

Example 2

As shown in fig. 9a and 9b, this embodiment is different from embodiment 1 in that: the first sealing member 52 is a nylon pad 523 sleeved on the outer ring of the end portion of the screw rod 512 of the adjustable screw 51, the oil suction passage 11 is provided with a stepped hole 113, one end of the nylon pad 523 is pressed against a stepped surface of the stepped hole 113, and the other end is pressed against the stepped surface of the screw rod 512 of the adjustable screw 51. When the adjustable screw 51 is screwed down, as shown in fig. 9a, the nylon pad 523 and the screw 512 of the adjustable screw 51 together block the stepped hole 113 of the oil suction path 11, so that the hydraulic oil in the oil storage chamber 10 cannot be sucked into the working pump chamber 30 through the oil suction path 11 to form a sealing structure, and the oil suction path 11 is closed. When the adjustable screw 51 is unscrewed, as shown in fig. 9b, the nylon pad 523 and the adjustable screw 51 are separated from a step surface of the step hole 113 of the oil suction passage 11, so that the oil suction passage 11 can be operated normally. Other parts and mounting manners are the same as those of embodiment 1.

With continued reference to fig. 10a to 10c and with reference to fig. 6 and 7, the working principle of the hydraulic jack for multi-directional lifting according to the present utility model is as follows:

as shown in fig. 10a, when the opposite side of the lifting hand 4 of the jack is used horizontally against the ground, the adjustable screw 51 in the plug assembly 5 on the opposite side of the lifting hand 4 is unscrewed, the adjustable screws 51 in the plug assemblies 5 on the left and right sides of the lifting hand 4 are screwed, that is, the oil paths AB and AC are closed, and hydraulic oil enters the oil path AA from the oil storage chamber 10 through the oil path a and then enters the working pump chamber 30 through the oil path BA by lifting the lifting hand 4; when the press handle is pressed down, the oil path BA is closed through the first check valve 110, and hydraulic oil in the working pump cavity 30 enters the working cylinder cavity 20 through the oil paths BB, BC and BD, so that the horizontal use on the opposite side of the press handle 4 can be realized.

As shown in fig. 10B, when the right side of the lifting hand 4 of the jack is used horizontally against the ground, the adjustable screw 51 in the plug assembly 5 on the right side of the lifting hand 4 is unscrewed, the adjustable screws 51 in the plug assemblies 5 on the left side and the opposite side of the lifting hand 4 are screwed, that is, the oil paths AA and AC are closed, and through the lifting press hand 4, hydraulic oil enters the oil path AB from the oil storage cavity 10 through the oil path B and then enters the working pump cavity 30 through the oil path BA; when the press handle 4 is pressed down, the oil path BA is closed through the first check valve 110, and hydraulic oil in the working pump cavity 30 enters the working cylinder cavity 20 through the oil paths BB, BC and BD, so that the right side of the press handle 4 can be used horizontally.

As shown in fig. 10C, when the left side of the lifting hand 4 of the jack is used horizontally against the ground, the adjustable screw 51 in the plug assembly 5 on the left side of the lifting hand 4 is unscrewed, the adjustable screws 51 in the plug assemblies 5 on the right side and the opposite side of the lifting hand 4 are screwed, that is, the oil paths AA and AB are closed, and through the lifting press hand 4, hydraulic oil enters the oil path AC from the oil storage cavity 10 through the oil path C and then enters the working pump cavity 30 through the oil path BA; when the knock 4 is depressed, the oil passage BA is closed by the first check valve 110, and the hydraulic oil in the working pump chamber 30 enters the working cylinder chamber 20 through the oil passages BB, BC, BD. Thereby realizing the use of the left side of the press handle in a lying way.

In the structure of the plug assembly 5 described in embodiment 1, the function of transversely using a single jack in different directions can be realized only by ensuring that the elastic force of the spring 522 is larger than the suction force generated on the steel ball 521 when oil is absorbed. In the structure of the plug assembly 5 described in embodiment 2, only the roughness of the contact of the valve face, the screw and the nylon pad is ensured, and when the screw is screwed down, the nylon pad can play a role in plane sealing, so that the function of transversely using a single jack in different directions can be realized. The oil suction holes 111 can also be formed on any two of the three directions of the opposite side, the left side and the right side of the lifting handle 4, so that only two oil suction paths 11 are provided with the plug assemblies 5, and the function of transverse use in two directions is realized.

Claims

1. The utility model provides a hydraulic jack that multi-direction lifted, includes base (1), installs jack body (2) and pump body (3) on base (1), installs lift hand (4) on pump body (3), jack body (2) in be equipped with oil storage chamber (10) and work hydro-cylinder chamber (20), pump body (3) in be equipped with work pump chamber (30), oil suction hole (111) have been seted up to the position of the corresponding oil storage chamber (10) of base (1), pump body oil suction hole (112) have been seted up to the position of the corresponding work pump chamber (30) of base (1), processing has oil suction way (11) of intercommunication oil suction hole (111) and pump body oil suction hole (112) on base (1), inhales work pump chamber (30) with hydraulic oil from oil storage chamber (10), its characterized in that: the oil suction hole (111) is formed in the opposite side, the left side and the right side of the lifting handle (4) or any two of the three directions, the base (1) is provided with a plug mounting hole (70) communicated with the oil suction path (11), the plug mounting hole (70) is internally provided with a plug assembly (5) towards the oil suction path (11), the plug assembly (5) comprises an adjustable screw (51), a first sealing element (52) and a second sealing element (53), the adjustable screw (51) is screwed in from the plug mounting hole (70), the first sealing element (52) is positioned between the oil suction path (11) and the adjustable screw (51), the adjustable screw (51) is screwed, the first sealing element (52) seals the oil suction path (11), the adjustable screw (51) is unscrewed, and the oil suction path (11) normally conducts oil; and the second sealing element (53) is sleeved on the screw head (511) of the adjustable screw (51) and is positioned in the plug mounting hole (70) and used for sealing the plug mounting hole (70).

2. A multi-directional lifting hydraulic jack as claimed in claim 1 wherein: the second sealing element (53) is an O-shaped ring, and the O-shaped ring is sleeved on the outer ring of the screw head (511) of the adjustable screw (51).

3. A multi-directional lifting hydraulic jack as claimed in claim 1 wherein: the oil suction channel (11) is provided with a step hole (113), the first sealing element (52) comprises a steel ball (521) and a spring (522), the steel ball (521) and the adjustable screw (51) are sequentially arranged along the step hole (113) from inside to outside, the spring (522) is embedded in the oil suction channel (11), one end of the spring is pressed against the step surface of the step hole (113), the other end of the spring is pressed against the steel ball (521), the steel ball (521) is positioned between the spring (522) and the adjustable screw (51), the steel ball (521) blocks the step hole (113) when the adjustable screw (51) is screwed down, hydraulic oil in the oil storage cavity (10) cannot be sucked into the working pump cavity (30) through the oil suction channel (11), and a sealing structure is formed, and the oil suction channel (11) is closed; when the adjustable screw (51) is unscrewed, the steel ball (521) is separated from the step hole (113) under the pushing of the elastic force of the spring (522), so that the oil suction passage (11) can normally operate.

4. A multi-directional lifting hydraulic jack as claimed in claim 1 wherein: the oil suction way (11) is provided with a step hole (113), the first sealing element (52) is a nylon pad (523) sleeved on the outer ring of the end part of the screw rod (512) of the adjustable screw (51), one end of the nylon pad (523) is pressed against one step surface of the step hole (113), the other end of the nylon pad is pressed against the step surface of the screw rod (512) of the adjustable screw (51), when the adjustable screw (51) is screwed down, the nylon pad (523) and the screw rod (512) of the adjustable screw (51) jointly block the step hole (113) of the oil suction way (11), hydraulic oil in the oil storage chamber (10) cannot be sucked into the working pump chamber (30) through the oil suction way (11) to form a sealing structure, and the oil suction way (11) is closed; when the adjustable screw (51) is unscrewed, the nylon pad (523) and the adjustable screw (51) leave the stepped hole (113) of the oil suction path (11), so that the oil suction path (11) can normally operate.

5. A multi-directional lifting hydraulic jack according to claim 3 or 4, wherein: the oil suction hole (111) comprises a first oil suction hole (1111) located on the opposite side of the lifting hand (4), a second oil suction hole (1112) located on the right side of the lifting hand (4) and a third oil suction hole (1113) located on the left side of the lifting hand (4), the oil suction path (11) comprises a first oil suction path (1101) communicated with the first oil suction hole (1111) and the pump body oil suction hole (112), a second oil suction path (1102) communicated with the second oil suction hole (1112) and the pump body oil suction hole (112), and a third oil suction path (1103) communicated with the third oil suction hole (1113) and the pump body oil suction hole (112), and the first oil suction path (1101), the second oil suction path (1102) and the third oil suction path (1103) are all sucked into the pump body (3) through the pump body oil suction hole (112).

6. A multi-directional lifting hydraulic jack as claimed in claim 5 wherein: the first oil suction way (1101) comprises an oil way A, an oil way AA and an oil way BA which are communicated sequentially, the second oil suction way (1102) comprises an oil way B, an oil way AB and an oil way BA which are communicated sequentially, the third oil suction way (1103) comprises an oil way C, an oil way AC and an oil way BA which are communicated sequentially, one end of the oil way A is communicated with the first oil suction hole (1111), one end of the oil way B is communicated with the second oil suction hole (1112), the oil way C is communicated with the third oil suction hole (1113), the oil way BA is communicated with the pump body oil suction hole (112), and the oil ways AA, AB and AC are finally converged together to be communicated into the working pump cavity (30) from the oil way BA.

7. A multi-directional lifting hydraulic jack as defined in claim 6 wherein: the oil way A and the oil way BA are perpendicular to the oil way AA, the oil way B and the oil way BA are perpendicular to the oil way AB, and the oil way C and the oil way BA are perpendicular to the oil way AC.

8. A multi-directional lifting hydraulic jack as defined in claim 6 wherein: so the oil passage AA, the oil passage AB and the oil passage AC form a cross shape and converge at the center of the cross shape.

9. A multi-directional lifting hydraulic jack as defined in claim 6 wherein: the oil circuit AA, the oil circuit AB and the oil circuit AC are arranged separately until the oil circuits BA are converged.

10. A multi-directional lifting hydraulic jack as defined in claim 6 wherein: the plug assembly (5) is arranged at a first communication position (40) where the oil way A and the oil way AA are intersected, a second communication position (50) where the oil way B and the oil way AB are intersected, and a third communication position (60) where the oil way C and the oil way AC are intersected.