CN113636487A

CN113636487A - Hydraulic jack

Info

Publication number: CN113636487A
Application number: CN202111189497.2A
Authority: CN
Inventors: 季雪峰; 胡晓勇; 袁春锋; 束华平
Original assignee: JIANGSU HUAEN MACHINERY TECHNOLOGY CO LTD
Current assignee: JIANGSU HUAEN MACHINERY TECHNOLOGY CO LTD
Priority date: 2021-10-13
Filing date: 2021-10-13
Publication date: 2021-11-12
Anticipated expiration: 2041-10-13
Also published as: CN113636487B

Abstract

The invention discloses a hydraulic jack which comprises a supporting seat, wherein one side of the outer wall of the top of the supporting seat is connected with a large hydraulic cylinder through a bolt, the outer wall of one side of the large hydraulic cylinder is provided with an oil tank, one side of the outer wall of the top of the oil tank is fixedly connected with a small hydraulic cylinder, the outer wall of the top of the small hydraulic cylinder is fixedly connected with a handle, the outer wall of the top of the large hydraulic cylinder is fixedly connected with a jacking mechanism, two sides of the outer wall of the top of the supporting seat are respectively provided with a second sliding groove, a counterweight mechanism is slidably connected inside the second sliding grooves, and the counterweight mechanism comprises a counterweight table and a counterweight block. The invention can prevent the jack from falling due to unstable gravity center to cause the heavy object to fall from the high position to cause damage to the heavy object, prevent the heavy object from falling from the jacking mechanism due to smaller contact area between the heavy object and the jacking mechanism, improve the stability of the jack and carry out lifting treatment on the heavy objects with different weights.

Description

Hydraulic jack

Technical Field

The invention relates to the technical field of hydraulic jacks, in particular to a hydraulic jack.

Background

The jack is the simplest hoisting equipment with small hoisting height, and has two types of mechanical type and hydraulic type, the mechanical jack has two types of rack type and spiral type, the hoisting capacity is small, the operation is hard, the jack is generally only used for mechanical maintenance work, the hydraulic jack has compact structure, stable work and self-locking function, so the jack is widely used, the hydraulic jack is also called an oil pressure jack, the jack adopts a plunger or a hydraulic cylinder as a rigid jacking piece, one type of simple hoisting equipment (common simple hoisting equipment comprises the hydraulic jack, a pulley, a winch and the like), generally only a hoisting mechanism is provided for hoisting heavy objects, and the jack has simple structure, light weight, convenient carrying and convenient movement.

When the hydraulic jack lifts the heavy object, the gravity center of the jack can be changed due to the fact that the heavy object is heavy and the heavy object rises, so that the stability of the jack is poor, the jack can fall due to unstable gravity center, and the lifting of the heavy object is affected.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a hydraulic jack.

In order to achieve the purpose, the invention adopts the following technical scheme:

hydraulic jack, including the supporting seat, there is big pneumatic cylinder one side of supporting seat top outer wall through bolted connection, and one side outer wall of big pneumatic cylinder is provided with the oil tank, the little pneumatic cylinder of one side fixedly connected with of oil tank top outer wall, and the top outer wall fixedly connected with handle of little pneumatic cylinder, the top outer wall fixedly connected with jack-up mechanism of big pneumatic cylinder, the second spout has all been seted up to the both sides of supporting seat top outer wall, and the inside sliding connection of second spout has counter weight mechanism, counter weight mechanism includes counter weight platform and balancing weight, and sliding connection between counter weight platform and the balancing weight, the top outer wall fixedly connected with pipe of supporting seat, and the inside sliding connection of pipe has the stay cord, the both ends of stay cord respectively with between jack-up mechanism and the counter weight platform through bolted connection.

Preferably, the jack-up mechanism includes the fixed plate, fixed block and mount, and first fixed slot and second fixed slot have been seted up respectively to the top outer wall of fixed plate, two first fixed slots distribute in the both sides of second fixed slot, form sliding connection between fixed block and the second fixed slot, form sliding connection between mount and the first fixed slot, the opening has been seted up between first fixed slot and the second fixed slot, the inner wall of opening rotates and is connected with the gear, one side meshing of gear has the rack, pass through bolted connection between rack and the fixed block, one side outer wall of mount is provided with a plurality of tooth pieces, mesh between tooth piece and the gear.

Preferably, the equal fixedly connected with slider of both sides outer wall of supporting seat, and the outer wall sliding connection of slider has the slide rail, the bottom outer wall fixedly connected with fixing base of slide rail.

Preferably, a supporting mechanism is arranged between the fixing seat and the supporting seat, the supporting mechanism comprises an air bag and an air cushion, and an air pipe is arranged between the air bag and the air cushion.

Preferably, first chutes are formed in outer walls of two sides of the fixing seat, the inner walls of the first chutes are connected with sliding plates in a sliding mode, one outer wall of one side of each sliding plate is fixedly connected with a supporting frame, and the supporting frames are bonded with the air cushions.

Preferably, a plurality of ball grooves are formed in two sides of the outer wall of the bottom of the support frame, and balls are connected to the inner walls of the ball grooves in a rolling mode.

Preferably, a spring is fixedly connected to the inner wall of one side of the second chute, and the spring is connected with the counterweight table through a bolt.

Preferably, one side of the outer wall of the top of the oil tank is fixedly connected with a guide rail, and the guide rail is in sliding connection with the handle.

The invention has the beneficial effects that:

1. through the arranged counterweight mechanism, when the large hydraulic cylinder jacks a counterweight, the stay cord can slide under the guide of the guide pipe along with the rising of the displacement of the jacking mechanism, and the stay cord can stretch the counterweight table and the counterweight block to the other end of the second sliding groove from one end of the second sliding groove when sliding, so that the positions of the counterweight table and the counterweight block can be adjusted according to the rising height of the jacking mechanism, the jack can be conveniently lifted to have the counterweight effect, the phenomenon that the gravity center of the jack is changed when a heavy object rises is prevented, the stability of the jack is reduced, and the jack is further damaged because the gravity center falls down due to unstable gravity and the heavy object falls off from a high position;

2. by the arranged jacking mechanism, when the fixed block is contacted with the bottom of the heavy object in the process of hoisting the heavy object, along with the rising of the displacement of the jacking mechanism, the pressure of the heavy object on the fixed block is gradually increased, and the fixed block slides downwards under the action of the pressure of the heavy object, because the rack is meshed with the gear, the rack can drive the gear to rotate when moving downwards, the gear wheel can make the fixed frame move upwards by meshing with the tooth block when rotating, and when the fixed frame acts on the top of the heavy object, the contact area between the heavy object and the jacking mechanism can be increased through the matching action between the fixing frame and the fixing block, thereby facilitating the lifting treatment of the heavy object, preventing the heavy object from falling off from the jacking mechanism due to the small contact area between the heavy object and the jacking mechanism, therefore, the lifting of the heavy object is influenced, and in addition, the stability of the heavy object during lifting can be improved through the matching between the fixing block and the fixing frame;

3. through the supporting mechanism, when a heavy object is lifted, the supporting seat can move downwards due to the pressure of the heavy object, the air bag can be compressed when the supporting seat moves downwards, at the moment, the air in the air bag can be conveyed to the inside of the air cushion through the air pipe, the inside of the air cushion can be expanded due to the inflation of the air, at the moment, the expanded air cushion can push the supporting frame to move towards one side, the supporting area of the supporting mechanism can be increased along with the movement of the supporting frame, the stability of the jack can be further improved, the situation that the top weight of the jack is larger than the bottom weight due to the lifting of the heavy object is prevented, the stability of the jack is poor, the supporting area of the jack is increased along with the increase of the supporting area of the supporting mechanism, at the moment, the stability of the jack can be improved, in addition, the supporting area of the supporting mechanism can be increased along with the increase of the weight of the heavy object, therefore, so that the jack can lift heavy objects with different weights.

Drawings

Fig. 1 is a schematic structural diagram of a hydraulic jack according to the present invention;

fig. 2 is a schematic structural diagram of a jacking mechanism of the hydraulic jack provided by the invention;

FIG. 3 is a schematic structural diagram of a counterweight mechanism of the hydraulic jack according to the present invention;

fig. 4 is a partial structural schematic view of a hydraulic jack according to the present invention;

fig. 5 is a schematic structural diagram of a supporting mechanism of the hydraulic jack according to the present invention.

In the drawings: 1. a supporting seat; 2. a large hydraulic cylinder; 3. a jack-up mechanism; 4. a guide rail; 5. a small hydraulic cylinder; 6. a handle; 7. a support frame; 8. a slide rail; 9. a slider; 10. a fixed seat; 11. a counterweight mechanism; 12. a fixing plate; 13. a first fixing groove; 14. a second fixing groove; 15. a port; 16. a gear; 17. a tooth block; 18. a fixed mount; 19. a rack; 20. a fixed block; 21. pulling a rope; 22. a counterweight table; 23. a balancing weight; 24. a spring; 25. a conduit; 26. a first chute; 27. a second chute; 28. an air bag; 29. an air cushion; 30. a slide board.

Detailed Description

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Referring to fig. 1-5, a hydraulic jack includes a support base 1, one side of the top outer wall of the support base 1 is connected with a large hydraulic cylinder 2 through a bolt, and one side outer wall of the large hydraulic cylinder 2 is provided with an oil tank, one side of the top outer wall of the oil tank is connected with a small hydraulic cylinder 5 through a bolt, and the top outer wall of the small hydraulic cylinder 5 is connected with a handle 6 through a bolt, the top outer wall of the large hydraulic cylinder 2 is connected with a jacking mechanism 3 through a bolt, both sides of the top outer wall of the support base 1 are respectively provided with a second chute 27, and the inside of the second chute 27 is connected with a counterweight mechanism 11 in a sliding manner, the counterweight mechanism 11 includes a counterweight table 22 and a counterweight table 23, and the counterweight table 22 is connected with the counterweight table 23 in a sliding manner, the top outer wall of the support base 1 is connected with a guide pipe 25 through a bolt, and the inside of the guide pipe 25 is connected with a pull rope 21 in a sliding manner, and both ends of the pull rope 21 are respectively connected with the jacking mechanism 3 and the counterweight table 22 through bolts, when big pneumatic cylinder 2 was when jacking up the heavy object, along with the rising of the displacement of jack-up mechanism 3, stay cord 21 can slide under the guide of pipe 25, and stay cord 21 can be with counter weight platform 22 and balancing weight 23 when sliding and stretch to the other end of second spout 27 from the one end of second spout 27, thereby adjust counter weight platform 22 and balancing weight 23's position according to the height that jack-up mechanism 3 rose, and then be convenient for play the effect of counter weight to the jack, prevent to make the focus of jack change when the heavy object rose because the heavy object, thereby make the stability of jack reduce, and then lead to the jack to take place to fall down because the focus and make the heavy object drop from the eminence and lead to the fact the damage to the heavy object.

In the invention, the jacking mechanism 3 comprises a fixed plate 12, a fixed block 20 and a fixed frame 18, wherein the outer wall of the top part of the fixed plate 12 is respectively provided with a first fixed groove 13 and a second fixed groove 14, the two first fixed grooves 13 are distributed at two sides of the second fixed groove 14, the fixed block 20 is in sliding connection with the second fixed groove 14, the fixed frame 18 is in sliding connection with the first fixed grooves 13, a through hole 15 is formed between the first fixed groove 13 and the second fixed groove 14, the inner wall of the through hole 15 is rotatably connected with a gear 16, one side of the gear 16 is meshed with a rack 19, the rack 19 is connected with the fixed block 20 through a bolt, the outer wall of one side of the fixed frame 18 is provided with a plurality of tooth blocks 17, the tooth blocks 17 are meshed with the gear 16, when the fixed block 20 is contacted with the bottom part of a heavy object, the pressure of the heavy object on the fixed block 20 is gradually increased along with the displacement rise of the jacking mechanism 3, the fixed block 20 slides downwards under the action of the pressure of the heavy object, at the moment, due to the meshing between the rack 19 and the gear 16, the rack 19 can drive the gear 16 to rotate when moving downwards, the gear 16 can enable the fixed frame 18 to move upwards through the meshing with the toothed block 17 when rotating, when the fixed frame 18 acts on the top of the heavy object, the contact area between the heavy object and the jacking mechanism 3 can be increased through the matching between the fixed frame 18 and the fixed block 20, so that the heavy object can be conveniently lifted, the heavy object is prevented from falling off from the jacking mechanism 3 due to the fact that the contact area between the heavy object and the jacking mechanism 3 is small, the lifting of the heavy object is influenced, and in addition, the stability of the heavy object during lifting can be improved through the matching between the fixed block 20 and the fixed frame 18.

In the invention, the outer walls of two sides of the supporting seat 1 are both connected with a sliding block 9 through bolts, the outer wall of the sliding block 9 is connected with a sliding rail 8 in a sliding manner, and the outer wall of the bottom of the sliding rail 8 is connected with a fixed seat 10 through bolts.

In the invention, a supporting mechanism is arranged between the fixed seat 10 and the supporting seat 1, the supporting mechanism comprises an air bag 28 and an air cushion 29, and an air pipe is arranged between the air bag 28 and the air cushion 29.

In the invention, the outer walls of two sides of the fixed seat 10 are both provided with the first sliding grooves 26, the inner wall of the first sliding groove 26 is connected with the sliding plate 30 in a sliding manner, the outer wall of one side of the sliding plate 30 is connected with the support frame 7 through a bolt, the support frame 7 is adhered with the air cushion 29, when a heavy object is lifted, the support frame 1 can move downwards due to the pressure of the heavy object, the air bag 28 can be compressed when the support frame 1 moves downwards, at the moment, the air in the air bag 28 can be conveyed to the inside of the air cushion 29 through an air pipe, the inside of the air cushion 29 can be expanded due to the filling of the air, at the moment, the expanded air cushion 29 can push the support frame 7 to move towards one side, and the supporting area of the supporting mechanism can be enlarged along with the movement of the support frame 7, so that the stability of the jack can be further improved, and the top weight of the jack is prevented from being larger than the bottom weight due to the lifting of the heavy object, therefore, the stability of the jack is poor, the supporting area of the supporting mechanism is increased along with the increase of the supporting area of the supporting mechanism, and the stability of the jack is improved.

In the invention, a plurality of ball grooves are formed in both sides of the outer wall of the bottom of the support frame 7, and balls are connected to the inner walls of the ball grooves in a rolling manner, so that the friction force between the support frame 7 and the ground can be reduced, the support frame 7 can move to one side, and the influence on the movement of the support frame 7 due to friction is prevented.

In the present invention, the spring 24 is connected to one side inner wall of the second chute 27 by a bolt, and the spring 24 is connected to the counterweight table 22 by a bolt.

In the invention, one side of the outer wall of the top of the oil tank is connected with a guide rail 4 through a bolt, and the guide rail 4 and a handle 6 form sliding connection.

The working principle is as follows: when the lifting jack is used, the lifting jack is placed at the bottom of a heavy object, when the heavy object needs to be lifted, the handle 6 is pressed, the small hydraulic cylinder 5 is moved downwards, so that the large hydraulic cylinder 2 jacks up the heavy object, when the fixed block 20 is contacted with the bottom of the heavy object, the pressure of the heavy object on the fixed block 20 is gradually increased along with the displacement of the jacking mechanism 3, the fixed block 20 slides downwards under the action of the pressure of the heavy object, at the moment, the rack 19 is meshed with the gear 16, so that the rack 19 drives the gear 16 to rotate when moving downwards, the gear 16 can drive the fixed frame 18 to move upwards through the meshing with the tooth block 17 when rotating, when the fixed frame 18 acts on the top of the heavy object, the contact area between the heavy object and the jacking mechanism 3 can be increased through the matching effect between the fixed frame 18 and the fixed block 20, so that the heavy object can be lifted conveniently, in addition, the stability of the heavy object during lifting can be improved through the matching between the fixed block 20 and the fixed frame 18, when the large hydraulic cylinder 2 jacks the heavy object, the pull rope 21 can slide under the guide of the guide pipe 25 along with the displacement of the jacking mechanism 3, and the pull rope 21 can pull the counterweight table 22 and the counterweight block 23 from one end of the second sliding groove 27 to the other end of the second sliding groove 27 during sliding, so that the positions of the counterweight table 22 and the counterweight block 23 are adjusted according to the rising height of the jacking mechanism 3, the effect of jacking the counterweight is facilitated, the gravity center of the jack is prevented from changing when the heavy object rises, the stability of the jack is reduced, the jack falls down due to unstable gravity center, and the heavy object falls from the high position to damage the heavy object, when the heavy object is lifted, the support seat 1 moves downwards due to the pressure of the heavy object, and the support seat 1 compresses the air bag 28 when moving downwards, at this time, the air in the air bag 28 is conveyed to the inside of the air cushion 29 through the air pipe, the inside of the air cushion 29 will swell due to the inflation of the air, at this time, the swollen air cushion 29 will push the supporting frame 7 to move to one side, and with the movement of the supporting frame 7, the supporting area of the supporting mechanism will become larger, thereby further improving the stability of the jack, preventing the top weight of the jack from being larger than the bottom weight of the jack due to the lifting of heavy objects, therefore, the stability of the jack is poor, the supporting area of the supporting mechanism is increased along with the increase of the supporting area of the supporting mechanism, and the stability of the jack is improved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The hydraulic jack comprises a supporting seat (1), wherein one side of the outer wall of the top of the supporting seat (1) is connected with a large hydraulic cylinder (2) through a bolt, an oil tank is arranged on the outer wall of one side of the large hydraulic cylinder (2), one side of the outer wall of the top of the oil tank is fixedly connected with a small hydraulic cylinder (5), the outer wall of the top of the small hydraulic cylinder (5) is fixedly connected with a handle (6), the outer wall of the top of the large hydraulic cylinder (2) is fixedly connected with a jacking mechanism (3), the hydraulic jack is characterized in that two sides of the outer wall of the top of the supporting seat (1) are respectively provided with a second chute (27), the inner part of each second chute (27) is slidably connected with a counterweight mechanism (11), each counterweight mechanism (11) comprises a counterweight table (22) and a counterweight block (23), the counterweight table (22) is slidably connected with the counterweight block (23), and the outer wall of the top of the supporting seat (1) is fixedly connected with a guide pipe (25), a pull rope (21) is connected inside the guide pipe (25) in a sliding manner, and two ends of the pull rope (21) are respectively connected with the jacking mechanism (3) and the counterweight table (22) through bolts;

the jacking mechanism (3) comprises a fixed plate (12), a fixed block (20) and a fixed frame (18), and first fixed slot (13) and second fixed slot (14) have been seted up respectively to the top outer wall of fixed plate (12), two first fixed slots (13) distribute in the both sides of second fixed slot (14), form sliding connection between fixed block (20) and second fixed slot (14), form sliding connection between mount (18) and first fixed slot (13), opening (15) have been seted up between first fixed slot (13) and second fixed slot (14), the inner wall of opening (15) rotates and is connected with gear (16), one side meshing of gear (16) has rack (19), pass through bolted connection between rack (19) and fixed block (20), one side outer wall of mount (18) is provided with a plurality of tooth pieces (17), mesh between tooth piece (17) and gear (16).

2. The hydraulic jack of claim 1, wherein the outer walls of the two sides of the supporting seat (1) are fixedly connected with sliding blocks (9), the outer wall of each sliding block (9) is slidably connected with a sliding rail (8), and the outer wall of the bottom of each sliding rail (8) is fixedly connected with a fixed seat (10).

3. The hydraulic jack according to claim 2, characterized in that a support mechanism is arranged between the fixed base (10) and the support base (1), the support mechanism comprises an air bag (28) and an air cushion (29), and an air pipe is arranged between the air bag (28) and the air cushion (29).

4. The hydraulic jack of claim 3, wherein the outer walls of the two sides of the fixed seat (10) are respectively provided with a first sliding groove (26), the inner wall of the first sliding groove (26) is slidably connected with a sliding plate (30), the outer wall of one side of the sliding plate (30) is fixedly connected with a support frame (7), and the support frame (7) is bonded with the air cushion (29).

5. The hydraulic jack as claimed in claim 4, wherein a plurality of ball grooves are formed in both sides of the outer wall of the bottom of the support frame (7), and balls are connected to the inner walls of the ball grooves in a rolling manner.

6. The hydraulic jack of claim 1, wherein a spring (24) is fixedly connected to the inner wall of one side of the second sliding chute (27), and the spring (24) is connected with the counterweight table (22) through a bolt.

7. The hydraulic jack according to claim 1, characterized in that a guide rail (4) is fixedly connected to one side of the outer wall of the top of the oil tank, and a sliding connection is formed between the guide rail (4) and the handle (6).