CN220766359U

CN220766359U - Hydraulic jack

Info

Publication number: CN220766359U
Application number: CN202322420861.2U
Authority: CN
Inventors: 虞静凯; 叶培玉
Original assignee: Ningbo Guterrui Auto Parts Co ltd
Current assignee: Ningbo Guterrui Auto Parts Co ltd
Priority date: 2023-09-07
Filing date: 2023-09-07
Publication date: 2024-04-12
Anticipated expiration: 2033-09-07

Abstract

The utility model discloses a hydraulic jack, which comprises an inner square pipe and a balance valve device, wherein an outer square pipe is arranged on the outer side of the inner square pipe, a fixing assembly is arranged at the top of the inner square pipe, a supporting assembly is arranged at the bottom of the inner square pipe, a hydraulic circulation mechanism is arranged in the inner square pipe, and the balance valve device is connected to the bottom of the hydraulic circulation mechanism. When the hydraulic jack works, liquid flows into the top of the jack through the liquid pressure provided by the external hydraulic system, so that pushing force or pulling force is generated, when the pressure exceeds a set value, the liquid overcomes the spring force of a spring below, so that a valve core of the balance valve opens a channel, a valve plate is loosened, a part of liquid flows to a pressure release port at the bottom to reduce the pressure of the system, the pressure can be regulated by using the pressure regulating button, the pressure balance is realized, and conversely, when the pressure of the system is lower than the set value, the valve core of the balance valve is closed by the spring force, the liquid is prevented from flowing, and the stable pressure state is maintained.

Description

Hydraulic jack

Technical Field

The utility model relates to the technical field of constructional engineering, in particular to a hydraulic jack.

Background

The hydraulic jack is used as a common engineering tool and widely applied to the task of lifting, supporting or pushing heavy objects, the traditional hydraulic jack generally adopts components such as a hydraulic cylinder, a hydraulic pump, a hydraulic pipeline, a control valve and the like, the hydraulic jack with lifting and supporting functions is used as a common engineering tool through liquid force transmission, the hydraulic jack is widely applied to the task of lifting, supporting or pushing heavy objects, and the traditional hydraulic jack generally adopts components such as the hydraulic cylinder, the hydraulic pump, the hydraulic pipeline, the control valve and the like, and the lifting and supporting functions are realized through liquid force transmission.

The prior publication number is: a hydraulic jack of CN219384619U, when in use, has the following problems: if the hydraulic jack encounters special conditions, such as oil pipe bursting and the like, during working, the jack can descend instantaneously, damage and personnel danger are easily caused, and for the requirement of bearing large load, the diameter and the length of a hydraulic cylinder of the traditional hydraulic jack are required to be increased, and the hydraulic jack is not flexible and portable.

Disclosure of Invention

The present utility model is directed to a hydraulic jack for solving the above-mentioned problems.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a hydraulic jack, includes interior side pipe and balanced valve device, the outside of interior side pipe is provided with outer side pipe, the top of interior side pipe is provided with fixed subassembly, fixed subassembly includes fixed plate, mounting hole and hob, the top of interior side pipe is provided with the fixed plate, the mounting hole has been seted up to the top of fixed plate, the mounting hole is provided with four sets of and distributes evenly, the top through connection of outer side pipe has the hob and with interior side pipe internal connection, the inside top of hob links to each other with the fixed plate, the fixed plate passes through hob and outer side pipe constitution regulation structure;

the bottom of interior side pipe is provided with supporting component, the inside of interior side pipe is provided with hydraulic pressure circulation mechanism, hydraulic pressure circulation mechanism's bottom is provided with and is connected with balanced valve device, hydraulic pressure circulation mechanism includes hydraulic fluid port, valve, goes up the hydraulic fluid port, connector, control valve, turning vane, sealing washer and piston down, the inside of interior side pipe is provided with down the hydraulic fluid port, the top of hydraulic fluid port is provided with the valve down, the top of valve is connected with the hydraulic fluid port, the one end of hydraulic fluid port is provided with the connector, the internal connection who goes up the hydraulic fluid port has control valve, control valve's outside is provided with the turning vane, the outside of hydraulic fluid port is provided with the sealing washer down, the inside of sealing washer is provided with the piston.

Preferably, the outside cover of interior side pipe is equipped with outer side pipe, be draw-in groove telescopic connection between interior side pipe and the outer side pipe, the outside length of interior side pipe is less than the interior side length of outer side pipe, interior side pipe and outer side pipe are the metal material.

Preferably, the supporting component comprises a side plate, a fixed socket and a bottom plate, wherein the side plate is arranged at the outer side of the lower end of the inner square tube, two groups of side plates are arranged at the outer side of the inner square tube, the fixed socket is arranged at the two ends of the side plate and penetrates through the inner square tube, the bottom plate is arranged at the bottom of the inner square tube, the inner square tube is fixedly welded with the bottom plate, and the width of the bottom plate is larger than that of the inner square tube, extends outwards and is larger than that of the outer square tube.

Preferably, the balance valve device comprises a circulation port, a valve plate, a valve core, a spring, a pressure adjusting button and a pressure release port, wherein the bottom of the inner square pipe is connected with the circulation port, the valve plate is arranged on the inner side of the circulation port, the valve core is arranged at the bottom of the valve plate, the spring is arranged at the bottom of the valve core, the pressure adjusting button is arranged on the left side of the valve core, and the pressure release port is connected on the inner side of the pressure adjusting button.

Preferably, the flow port and the pressure release port are connected in a penetrating way, and the valve core and the pressure release port form a pressure release structure through a spring.

Compared with the prior art, the utility model has the beneficial effects that:

when the hydraulic jack works, liquid flows into the top of the jack through the liquid pressure provided by the external hydraulic system, so that pushing force or pulling force is generated, when the pressure exceeds a set value, the liquid overcomes the spring force of a spring below, so that a valve core of the balance valve opens a channel, a valve plate is loosened, a part of liquid flows to a pressure release port at the bottom to reduce the pressure of the system, the pressure can be regulated by using the pressure regulating button, the pressure balance is realized, and conversely, when the pressure of the system is lower than the set value, the valve core of the balance valve is closed by the spring force, the liquid is prevented from flowing, and the stable pressure state is maintained.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the present utility model.

Fig. 2 is a schematic plan view of the present utility model.

Fig. 3 is a schematic view of the hydraulic internal structure of the present utility model.

Fig. 4 is a schematic view of the internal planar structure of the balance valve of the present utility model.

In the figure: 1. an inner square tube; 2. an outer square tube; 3. a fixing assembly; 301. a fixing plate; 302. a mounting hole; 303. a screw rod; 4. a support assembly; 401. a side plate; 402. a fixed socket; 403. a bottom plate; 5. a hydraulic flow mechanism; 501. an oil outlet; 502. a valve; 503. an oil feeding port; 504. a connection port; 505. a control valve; 506. a rotating piece; 507. a seal ring; 508. a piston; 6. a balancing valve device; 601. a flow port; 602. a valve plate; 603. a valve core; 604. a spring; 605. a pressure adjusting knob; 606. and a pressure release port.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, an embodiment of the present utility model is provided: the utility model provides a hydraulic jack, includes interior side pipe 1 and balanced valve device 6, and the outside of interior side pipe 1 is provided with outside pipe 2, and the top of interior side pipe 1 is provided with fixed subassembly 3, and the bottom of interior side pipe 1 is provided with supporting component 4, and the inside of interior side pipe 1 is provided with hydraulic pressure circulation mechanism 5, and the bottom of hydraulic pressure circulation mechanism 5 is provided with balanced valve device 6.

The outside cover of interior side pipe 1 is equipped with outside pipe 2, is draw-in groove telescopic connection between interior side pipe 1 and the outside pipe 2, and the outside length of interior side pipe 1 is less than the interior side length of outside pipe 2, and interior side pipe 1 and outside pipe 2 are the metal material, increase the weight-bearing and the weight-resistant degree of jack.

The fixed subassembly 3 includes fixed plate 301, mounting hole 302 and hob 303, the top of inside pipe 1 is provided with fixed plate 301, mounting hole 302 has been seted up to the top of fixed plate 301, mounting hole 302 is provided with four and distributes evenly, the top through connection of outside pipe 2 has hob 303 and with inside pipe 1 internal connection, the inside top of hob 303 links to each other with fixed plate 301, fixed plate 301 passes through hob 303 and outside pipe 2 constitutes regulation structure, hob 303 is the structure at fixed plate 301 and jack top for transfer load and provide support, transfer the strength to the jack inside when loading.

The support component 4 includes curb plate 401, fixed socket 402 and bottom plate 403, the lower extreme outside of interior side pipe 1 is provided with curb plate 401, curb plate 401 is provided with two sets of in side pipe 1 outside, the both ends of curb plate 401 are provided with fixed socket 402 and run through with interior side pipe 1 inside, bottom plate 403 is installed to interior side pipe 1 bottom, be fixed welded connection between interior side pipe 1 and the bottom plate 403, the width of bottom plate 403 is greater than interior side pipe 1 and outwards extends and be greater than the width of outer side pipe 2 all around for the support of fixed jack, and have withstand voltage and stability.

The hydraulic circulation mechanism 5 comprises a lower oil port 501, an air valve 502, an upper oil port 503, a connecting port 504, a control valve 505, a rotary piece 506, a sealing ring 507 and a piston 508, wherein the lower oil port 501 is arranged in the inner square pipe 1, the air valve 502 is arranged above the lower oil port 501, the top of the air valve 502 is connected with the upper oil port 503, one end of the upper oil port 503 is provided with the connecting port 504, the control valve 505 is connected with the inner part of the upper oil port 503, the rotary piece 506 is arranged on the outer side of the control valve 505, the sealing ring 507 is arranged on the outer side of the lower oil port 501, the piston 508 is arranged in the sealing ring 507, and pressure balance of the system is realized by controlling liquid flow.

The balance valve device 6 comprises a circulation port 601, a valve plate 602, a valve core 603, a spring 604, a pressure adjusting button 605 and a pressure release port 606, wherein the bottom of the inner square pipe 1 is connected with the circulation port 601, the valve plate 602 is arranged on the inner side of the circulation port 601, the valve core 603 is arranged on the bottom of the valve plate 602, the spring 604 is arranged on the bottom of the valve core 603, the pressure adjusting button 605 is arranged on the left side of the valve core 603, the pressure release port 606 is connected on the inner side of the pressure adjusting button 605, and when the top of the hydraulic jack is loaded and pressure is generated, the pressure is transmitted to the inside of the balance valve device 6.

The flow port 601 and the pressure release port 606 are connected in a penetrating manner, the valve core 603 and the pressure release port 606 form a pressure release structure through the spring 604, and the area of a channel of the liquid flowing through the valve body can be increased or reduced by adjusting the position of the valve core 603, so that the flow rate of the liquid is controlled.

Working principle: firstly, a jack fixing plate 301 is installed with the front end of a trailer or a semitrailer through a mounting hole 302 by using bolts, a screw rod 303 can be used for adjusting the position direction, when the jack fixing plate is used, a side plate 401 and a bottom plate 403 of the jack fixing plate are fixed through a fixing socket 402, the bottom plate 403 is fixed, an external connection oil pump body is connected with a connection port 504, the connection port 504 is fastened, no leakage is guaranteed, then in the use process, an oil feeding port 503 is entered from the connection port 504, a rotary piece 506 on the outer side is rotated, a control valve 505 is opened, the oil feeding port 503 is communicated with an oil discharging port 501 through a valve 502, then the connection port 504 is closed, a hydraulic pump or a hydraulic pressure source is operated, and pressure is generated at the top of the jack through compressed liquid. The liquid will be pushed into the top of the jack and force will be applied downwards, as the liquid is pushed into the jack top, the piston 508 will move upwards, driving the fixed plate 301 and the supporting object upwards, this pressure will also be transferred to the rotationally connected balancing valve means 6, when the pressure exceeds the set value, the liquid will overcome the spring force of the lower spring 604, causing the balancing valve core 603 to open the channel, the valve plate 602 to relax, so that part of the liquid will flow to the bottom relief 606 to reduce the system pressure, the pressure balance will be achieved using the pressure adjusting knob 605, conversely, when the system pressure is below the set value, the spring force will cause the balancing valve core 603 to close, preventing the liquid flow, to maintain a stable pressure state.

The foregoing is merely exemplary embodiments of the present utility model, and specific structures and features that are well known in the art are not described in detail herein. It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a hydraulic jack, includes interior side pipe (1) and balanced valve device (6), its characterized in that: the utility model discloses a square pipe structure, including square pipe, inner square pipe (1), fixed subassembly (3) are provided with in the outside of inner square pipe (1), the top of inner square pipe (1) is provided with fixed subassembly (3), fixed subassembly (3) are including fixed plate (301), mounting hole (302) and hob (303), the top of inner square pipe (1) is provided with fixed plate (301), mounting hole (302) have been seted up to the top of fixed plate (301), mounting hole (302) are provided with four groups and distribute evenly, the top of outer square pipe (2) is connected with hob (303) and with inner square pipe (1) internal connection in a penetrating way, the inside top of hob (303) links to each other with fixed plate (301), fixed plate (301) constitute adjusting structure through hob (303) and outer square pipe (2);

the bottom of interior side pipe (1) is provided with supporting component (4), the inside of interior side pipe (1) is provided with hydraulic pressure circulation mechanism (5), the bottom of hydraulic pressure circulation mechanism (5) is provided with balanced valve device (6), hydraulic pressure circulation mechanism (5) are including lower hydraulic fluid port (501), valve (502), go up hydraulic fluid port (503), connector (504), control valve (505), rotor (506), sealing washer (507) and piston (508), the inside of interior side pipe (1) is provided with lower hydraulic fluid port (501), the top of lower hydraulic fluid port (501) is provided with valve (502), the top of valve (502) is connected with hydraulic fluid port (503), the one end of hydraulic fluid port (503) is provided with connector (504), the internal connection of hydraulic fluid port (503) has control valve (505), the outside of control valve (505) is provided with rotor (506), the outside of lower hydraulic fluid port (501) is provided with sealing washer (507), the inside of sealing washer (507) is provided with piston (508).

2. A hydraulic jack according to claim 1, wherein: the outside cover of interior side pipe (1) is equipped with outside pipe (2), be draw-in groove telescopic connection between interior side pipe (1) and the outside pipe (2), the outside length of interior side pipe (1) is less than the interior side length of outside pipe (2), interior side pipe (1) and outside pipe (2) are the metal material.

3. A hydraulic jack according to claim 1, wherein: the support assembly (4) comprises side plates (401), fixing sockets (402) and a bottom plate (403), wherein the side plates (401) are arranged at the outer side of the lower end of the inner square tube (1), two groups of side plates (401) are arranged at the outer side of the inner square tube (1), the fixing sockets (402) are arranged at the two ends of the side plates (401) and penetrate through the inner square tube (1), the bottom plate (403) is arranged at the bottom of the inner square tube (1), the inner square tube (1) is fixedly welded with the bottom plate (403), and the width of the bottom plate (403) is larger than that of the inner square tube (1) and extends outwards and is larger than that of the outer square tube (2).

4. A hydraulic jack according to claim 1, wherein: the balance valve device (6) comprises a circulation port (601), a valve plate (602), a valve core (603), a spring (604), a pressure adjusting button (605) and a pressure release port (606), wherein the bottom of the inner square pipe (1) is connected with the circulation port (601), the valve plate (602) is arranged on the inner side of the circulation port (601), the valve core (603) is arranged on the bottom of the valve plate (602), the spring (604) is arranged on the bottom of the valve core (603), the pressure adjusting button (605) is arranged on the left side of the valve core (603), and the pressure release port (606) is connected on the inner side of the pressure adjusting button (605).

5. A hydraulic jack according to claim 4, wherein: the flow port (601) is connected with the pressure release port (606) in a penetrating way, and the valve core (603) and the pressure release port (606) form a pressure release structure through a spring (604).