CN109734013B - Self-locking hydraulic jack with bidirectional function - Google Patents
Self-locking hydraulic jack with bidirectional function Download PDFInfo
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- CN109734013B CN109734013B CN201910145871.5A CN201910145871A CN109734013B CN 109734013 B CN109734013 B CN 109734013B CN 201910145871 A CN201910145871 A CN 201910145871A CN 109734013 B CN109734013 B CN 109734013B
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Abstract
The invention discloses a self-locking hydraulic jack with a bidirectional effect, which comprises a cylinder body, wherein a piston is sleeved in the cylinder body, an outer wall thread is formed on the outer wall of the cylinder body, and a self-locking sleeve is screwed on the outer wall thread; the piston is provided with a resetting auxiliary mechanism. The invention can enable the piston to move in two directions, not only reduces the difficulty coefficient of oil return of the jack during construction, but also prolongs the service life of the jack, and the whole jack has compact structure and reasonable layout.
Description
The technical field is as follows:
the invention relates to the technical field of hydraulic equipment, in particular to a self-locking hydraulic jack with a bidirectional function.
Background art:
in the implementation process of the existing building jacking deviation correcting technology, the used jack needs to be in a load holding state for a long time. The jack cylinder bears heavy objects for a long time, so that the jack cylinder is very easy to damage. Therefore, the existing jack is generally improved, and a mechanical self-locking device is added, wherein the self-locking device is formed by screwing a nut on the outer wall of the jack through threads. However, the self-locking device hinders the arrangement of an oil return port, so that the piston of the self-locking jack can only move in a single direction through oil pressure, the oil return of the jack is quite difficult, and the field construction is influenced. In view of this, we propose a self-locking hydraulic jack with a two-way action.
The invention content is as follows:
the invention aims to overcome the defects of the prior art and provide a self-locking hydraulic jack with a bidirectional function, which can enable a piston to move bidirectionally, not only reduces the difficulty coefficient of oil return of the jack during construction, but also prolongs the service life of the jack, and the whole jack has a compact structure and a reasonable layout.
The scheme for solving the technical problems is as follows:
a self-locking hydraulic jack with a two-way effect comprises a cylinder body, wherein a cylinder hole with an opening at the upper side is formed in the cylinder body, an oil inlet and an oil return hole which are communicated with the cylinder hole are formed in the lower end of the cylinder body, a piston is sleeved in the cylinder hole, a piston rod protruding upwards and a limiting boss protruding downwards are formed on the piston, the upper end of the piston rod is inserted in a guide sleeve, and the guide sleeve is fixed on the inner wall of the upper end of the cylinder hole; an outer wall thread is formed on the outer wall of the cylinder body, and a self-locking sleeve is screwed on the outer wall thread; the piston is provided with a reset auxiliary mechanism, a rectangular hole with an opening at the lower side is formed in the limiting boss, two driving cavities with openings at the upper sides and arranged left and right are formed in the cylinder body, two steel belt grooves symmetrically arranged left and right are formed in the lower side wall of the cylinder body, the left steel belt groove is communicated with the left driving cavity and the cylinder hole, and the right steel belt groove is communicated with the right driving cavity and the cylinder hole; the auxiliary mechanism resets includes the actuating lever that two bilateral symmetry set up, the slider of two liftable, pulley and steel band, and every actuating lever articulates respectively in a drive intracavity that corresponds, and every slider spiro union is on a actuating lever that corresponds, the pulley articulates in the rectangular hole, the one end and the left slider fixed connection of steel band, the other end of steel band pass left race of steel band, pulley and the right side race of steel band stretch out the end and the slider fixed connection on right side in proper order.
The driving rod comprises a head, an intermediate rod and a screw rod which are formed from top to bottom in one step, the intermediate rod is hinged to the inner wall of the driving cavity through a bearing, a sealing ring is arranged between the intermediate rod and the inner wall of the driving cavity and located on the lower side of the bearing, the slider is screwed on the screw rod, and a hexagonal counter bore with an opening on the upper side is formed in the head.
The number of the bearings is more than two, and the two bearings are arranged up and down.
The slider is rectangular block-shaped, the slider plug bush is in the lower extreme guiding hole of drive chamber, and the inner wall profile of guiding hole cooperatees with the outer wall profile of slider, leaves the clearance between the outer wall of the inner wall of guiding hole and slider.
The bottom end of the screw is formed with a dome which presses against the bottom surface of the drive chamber.
The end part of the steel belt is inserted and sleeved on the sliding block corresponding to the steel belt in an L shape, a through hole penetrating in the vertical direction is formed in the end part of the steel belt, a threaded hole communicated with the through hole is formed in the sliding block, the upper end of the threaded hole is connected with a locking screw in a threaded mode, and the lower end of the locking screw is inserted and sleeved in the through hole.
And a second sealing ring is arranged between the outer wall of the piston and the inner wall of the cylinder hole.
Two baffle rings which are symmetrical front and back are formed on the outer wall of the pulley, and a steel belt is inserted between the two baffle rings.
The length of the self-locking sleeve is larger than the stroke of the piston.
The invention has the following outstanding effects: compared with the prior art, the jack has the advantages that the piston can move in two directions, the difficulty coefficient of oil return of the jack during construction is reduced, the service life of the jack is prolonged, and the whole jack is compact in structure and reasonable in layout.
Description of the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is an enlarged view of a portion of FIG. 1 with respect to B;
fig. 4 is a partially enlarged view of fig. 3 with respect to C.
The specific implementation mode is as follows:
embodiment, as shown in fig. 1 to 4, a self-locking hydraulic jack with a double-acting function comprises a cylinder body 1, wherein the cylinder body 1 is formed with a cylinder hole 11 with an upper side opened, the lower end of the cylinder body 1 is provided with an oil inlet 12 and an oil return 13 communicated with the cylinder hole 11, a piston 2 is sleeved in the cylinder hole 11, the piston 2 is formed with a piston rod 21 protruding upwards and a limiting boss 22 protruding downwards, the upper end of the piston rod 21 is inserted and sleeved on a guide sleeve 3, and the guide sleeve 3 is fixed on the inner wall of the upper end of the cylinder hole 11; an outer wall thread 14 is formed on the outer wall of the cylinder body 1, and a self-locking sleeve 4 is screwed on the outer wall thread 14; the piston 2 is provided with a reset auxiliary mechanism 5, a rectangular hole 221 with an opening at the lower side is formed in the limiting boss 22, two driving cavities 15 with openings at the left side and the right side are formed in the cylinder body 1, two steel belt grooves 16 which are symmetrically arranged at the left side and the right side are formed in the lower side wall of the cylinder body 1, the left steel belt groove 16 is communicated with the left driving cavity 15 and the cylinder hole 11, and the right steel belt groove 16 is communicated with the right driving cavity 15 and the cylinder hole 11; the auxiliary reset mechanism 5 comprises two driving rods 51, two liftable sliders 52, pulleys 53 and steel belts 54 which are arranged in bilateral symmetry, each driving rod 51 is hinged in a corresponding driving cavity 15, each slider 52 is in threaded connection with the corresponding driving rod 51, each pulley 53 is hinged in a rectangular hole 221, one end of each steel belt 54 is fixedly connected with the corresponding slider 52 on the left side, and the other end of each steel belt 54 sequentially penetrates through the extending end of each steel belt groove 16 on the left side, the corresponding pulley 53 and the corresponding steel belt groove 16 on the right side and is fixedly connected with the corresponding slider 52 on the right side.
Furthermore, the driving rod 51 comprises a head 511, an intermediate rod 512 and a screw 513 which are formed from top to bottom, the intermediate rod 512 is hinged on the inner wall of the driving cavity 15 through a bearing 55, a sealing ring 56 is arranged between the intermediate rod 512 and the inner wall of the driving cavity 15, the sealing ring 56 is positioned at the lower side of the bearing 55, the sliding block 52 is screwed on the screw 513, and the head 511 is formed with a hexagonal counter bore with an open upper side.
More specifically, there are two or more bearings 55, and the two or more bearings 55 are disposed up and down.
Furthermore, the slide block 52 is rectangular, the slide block 52 is inserted into a guide hole 151 at the lower end of the driving cavity 15, the inner wall profile of the guide hole 151 is matched with the outer wall profile of the slide block 52, and a gap is reserved between the inner wall of the guide hole 151 and the outer wall of the slide block 52.
Further, a dome 514 is formed at the bottom end of the screw 513, and the dome 514 is pressed against the bottom surface of the driving chamber 15.
Furthermore, the end of the steel belt 54 is inserted into the corresponding sliding block 52 in an L shape, a through hole 541 is formed at the end of the steel belt 54 and penetrates in the vertical direction, a threaded hole 521 communicated with the through hole 541 is formed on the sliding block 52, a locking screw 57 is screwed at the upper end of the threaded hole 521, and the lower end of the locking screw 57 is inserted into the through hole 541.
Further, a second seal ring 23 is provided between the outer wall of the piston 2 and the inner wall of the cylinder bore 11.
Furthermore, two baffle rings 531 are formed on the outer wall of the pulley 53, and the steel belt 54 is inserted between the two baffle rings 531.
Furthermore, the length of the self-locking sleeve 4 is greater than the stroke of the piston 2.
The working principle is as follows: firstly, hydraulic oil enters from an oil inlet hole 12, a piston 2 is jacked upwards by the hydraulic oil, the piston drives a piston rod 21 to move upwards, the upper end of the piston rod 21 is jacked up after being contacted with a workpiece to be jacked, after the workpiece is jacked to a required height, a self-locking sleeve 4 is rotated, the self-locking sleeve 4 moves upwards under the action of an outer wall thread 14 and is pressed against the workpiece, a little oil is returned from an oil return hole 13, the piston rod moves downwards, the workpiece is wholly pressed on the self-locking sleeve 4, the burden of the piston rod can be relieved, and therefore the service life of the jack is prolonged; secondly, when the jack is used up, the piston 2 is at a high position after being returned from the oil return hole in hydraulic pressure and cannot automatically descend, the driving rod 51 is rotated by the hexagonal wrench, the driving rod 51 drives the slide block 52 to move upwards under the action of the screw 513, the slide block 52 moves upwards to drive the two ends of the steel belt 54 to move upwards, at the moment, the steel belt 54 generates a downward force on the roller 53, and the roller 53 applies the force on the piston to drive the piston to move downwards and reset, so that the bidirectional movement of the piston can be realized.
Finally, the above embodiments are only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so that all equivalent technical solutions also belong to the scope of the present invention, and the scope of the present invention should be defined by the claims.
Claims (9)
1. A self-locking hydraulic jack with a bidirectional effect comprises a cylinder body (1), wherein a cylinder hole (11) with an opening at the upper side is formed in the cylinder body (1), an oil inlet (12) and an oil return hole (13) which are communicated with the cylinder hole (11) are formed in the lower end of the cylinder body (1), a piston (2) is sleeved in the cylinder hole (11), an upward convex piston rod (21) and a downward convex limiting boss (22) are formed on the piston (2), the upper end of the piston rod (21) is inserted and sleeved on a guide sleeve (3), and the guide sleeve (3) is fixed on the inner wall of the upper end of the cylinder hole (11); an outer wall thread (14) is formed on the outer wall of the cylinder body (1), and a self-locking sleeve (4) is screwed on the outer wall thread (14); the method is characterized in that: the piston (2) is provided with a reset auxiliary mechanism (5), a rectangular hole (221) with an opening at the lower side is formed in the limiting boss (22), two driving cavities (15) with openings at the left side and the right side are formed in the cylinder body (1), two steel belt grooves (16) which are symmetrically arranged at the left side and the right side are formed in the lower side wall of the cylinder body (1), the left steel belt groove (16) is communicated with the left driving cavity (15) and the cylinder hole (11), and the right steel belt groove (16) is communicated with the right driving cavity (15) and the cylinder hole (11); reset complementary unit (5) including drive rod (51), the slider (52), pulley (53) and steel band (54) of two liftable that bilateral symmetry set up, every drive rod (51) articulate respectively in a drive chamber (15) that corresponds, every slider (52) spiro union is on a drive rod (51) that corresponds, pulley (53) articulate in rectangular hole (221), the one end and left slider (52) fixed connection of steel band (54), the other end of steel band (54) passes the end that stretches out and slider (52) fixed connection on right side steel band groove (16), pulley (53) and right side rigid band groove (16) in proper order.
2. The self-locking hydraulic jack with two-way action according to claim 1, characterized in that: the driving rod (51) comprises a head (511), an intermediate rod (512) and a screw rod (513) which are formed from top to bottom in one step, the intermediate rod (512) is hinged to the inner wall of the driving cavity (15) through a bearing (55), a sealing ring (56) is arranged between the intermediate rod (512) and the inner wall of the driving cavity (15), the sealing ring (56) is located on the lower side of the bearing (55), the sliding block (52) is screwed on the screw rod (513), and a hexagonal counter bore with an upper opening is formed in the head (511).
3. A self-locking hydraulic jack with double action according to claim 2, characterized in that: the number of the bearings (55) is more than two, and the bearings (55) are arranged up and down.
4. A self-locking hydraulic jack with double action according to claim 2, characterized in that: the sliding block (52) is rectangular block-shaped, the sliding block (52) is inserted in a guide hole (151) at the lower end of the driving cavity (15), the inner wall profile of the guide hole (151) is matched with the outer wall profile of the sliding block (52), and a gap is reserved between the inner wall of the guide hole (151) and the outer wall of the sliding block (52).
5. A self-locking hydraulic jack with double action according to claim 2, characterized in that: the bottom end of the screw (513) is formed with a dome (514), and the dome (514) presses against the bottom surface of the drive chamber (15).
6. A bi-directional self-locking hydraulic jack as claimed in any one of claims 1 to 5, wherein: the end part of the steel belt (54) is inserted and sleeved on the sliding block (52) corresponding to the steel belt in an L shape, a through hole (541) penetrating through the end part of the steel belt (54) in the vertical direction is formed in the end part of the steel belt, a threaded hole (521) communicated with the through hole (541) is formed in the sliding block (52), the upper end of the threaded hole (521) is in threaded connection with a locking screw (57), and the lower end of the locking screw (57) is inserted and sleeved in the through hole (541).
7. The self-locking hydraulic jack with two-way action according to claim 1, characterized in that: and a second sealing ring (23) is arranged between the outer wall of the piston (2) and the inner wall of the cylinder hole (11).
8. The self-locking hydraulic jack with two-way action according to claim 1, characterized in that: two baffle rings (531) which are symmetrical front and back are formed on the outer wall of the pulley (53), and a steel belt (54) is inserted between the two baffle rings (531).
9. The self-locking hydraulic jack with two-way action according to claim 1, characterized in that: the length of the self-locking sleeve (4) is greater than the stroke of the piston (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910145871.5A CN109734013B (en) | 2019-02-27 | 2019-02-27 | Self-locking hydraulic jack with bidirectional function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910145871.5A CN109734013B (en) | 2019-02-27 | 2019-02-27 | Self-locking hydraulic jack with bidirectional function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109734013A CN109734013A (en) | 2019-05-10 |
| CN109734013B true CN109734013B (en) | 2020-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910145871.5A Active CN109734013B (en) | 2019-02-27 | 2019-02-27 | Self-locking hydraulic jack with bidirectional function |
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| Country | Link |
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| CN (1) | CN109734013B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2821393B1 (en) * | 2001-02-26 | 2005-10-28 | Eca | COMPENSATED ACTUATOR WITH OPTIMIZED POWER |
| JP2006519968A (en) * | 2003-03-10 | 2006-08-31 | アクチュアント コーポレーション | Actuator having external load support member |
| CN201962023U (en) * | 2011-01-20 | 2011-09-07 | 上海天演建筑物移位工程有限公司 | Jack for jacking ultrathin bridge |
| CN108862089A (en) * | 2018-07-25 | 2018-11-23 | 南京奥达升智能科技有限公司 | A kind of self-locking type hydraulic jack with two-way function |
| CN109179249A (en) * | 2018-09-27 | 2019-01-11 | 泰州市威力液压机具制造有限公司 | A kind of high-intensitive self-locking device of hydraulic device |
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2019
- 2019-02-27 CN CN201910145871.5A patent/CN109734013B/en active Active
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Effective date of registration: 20200521 Address after: 201712 room 3f-501, building 1, No. 189, Haihong Road, Jinshanwei Town, Jinshan District, Shanghai Applicant after: Shanghai guanpai mechanical and Electrical Equipment Co., Ltd Address before: 325100 Building No. 9, Science and Technology New Village, Codaocun, Jiangbei Street, Yongjia County, Wenzhou City, Zhejiang Province (3rd floor B District) Applicant before: WENZHOU YIZHENG TECHNOLOGY Co.,Ltd. |
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