CN110921549A - Jack device with freely adjustable height - Google Patents
Jack device with freely adjustable height Download PDFInfo
- Publication number
- CN110921549A CN110921549A CN201911328544.XA CN201911328544A CN110921549A CN 110921549 A CN110921549 A CN 110921549A CN 201911328544 A CN201911328544 A CN 201911328544A CN 110921549 A CN110921549 A CN 110921549A
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- China
- Prior art keywords
- space
- sliding
- rod
- gear
- magnet
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
- B66F3/25—Constructional features
Abstract
The invention discloses a jack device with freely adjustable height, which comprises a machine body, wherein a second valve is communicated and arranged on the right side of a first valve in the bottom wall of a first sliding space, the second gear is meshed with the first gear and a third gear, an ejector rod is pushed to move upwards by pushing oil through a push rod to generate pressure to generate power, the ejector rod moves upwards to lift a heavy object, a cam is used for contacting with a press rod, the press rod moves up and down to extrude the oil in a pressure space by rotating the cam, manual up and down pushing is not needed to drive a rocker to shake, the labor is saved, the efficiency is also improved, an electrified magnet and a permanent magnet are used for controlling the contact with a rack, the jack device can be lowered at any time when the heavy object needs to be lowered, the jack device can be lifted at any time when the heavy object needs to be lifted, and.
Description
Technical Field
The invention relates to the field of cranes, in particular to a jack device with freely adjustable height.
Background
The jack is light and small hoisting equipment which takes a rigid jacking piece as a working device and jacks a heavy object in a small stroke through a top bracket or a bottom supporting claw, the jack is mainly used for the departments of factory and mining, transportation and the like as vehicle repair, other hoisting, supporting and the like,
jack on the existing market is hand formula jack usually, because heavy object weight is big, is greater than the manpower usually, consequently all designs into the ratchet, can't reduce at the in-process of lifting, just can reduce when only lifting the limit, and the flexibility is not high often brings the puzzlement, consequently, but the jack device of a automatically regulated height comes to solve above problem.
Disclosure of Invention
The object of the present invention is to provide a jack device with freely adjustable height, which overcomes the above mentioned drawbacks of the prior art.
According to the embodiment of the invention, the jack device capable of freely adjusting the height comprises a body, a shaking space is arranged in the body, a power component for generating power is arranged in the shaking space, the power component comprises a rocker hinged in the shaking space, a first sliding space is arranged at the lower side of the shaking space, a sliding rod is arranged in the first sliding space in a sliding mode and is hinged with the rocker, a first valve is communicated and arranged in the bottom wall of the first sliding space, a second valve is communicated and arranged on the right side of the first valve in the bottom wall of the first sliding space, oil is placed in the first sliding space, the rocker drives the sliding rod to move downwards, the sliding rod extrudes the oil in the first sliding space into the first valve to prepare for pressure lifting of a jack,
the lifting device is characterized in that a second sliding space is arranged on the left side of the shaking space, a lifting component used for lifting a heavy object is arranged in the second sliding space, the lifting component comprises an ejector rod which is slidably mounted in the second sliding space, third sliding spaces are symmetrically arranged on the left and right sides of the outer side of the second sliding space, racks are fixedly mounted on the left and right sides of the third sliding space, the lower side of the ejector rod can be fixedly connected with the racks, when the heavy object needs to be lifted, oil enters the second sliding spaces to lift the ejector rod to slide upwards, the upper side of the ejector rod is in contact with the heavy object, and the heavy object is driven to lift upwards when the ejector rod moves.
On the basis of the technical scheme, the power component further comprises a cam space communicated with the upper side of the shaking space and communicated with the top wall of the shaking space, a motor is fixedly installed in the front wall of the cam space, a driving shaft is fixedly installed on the output shaft of the motor, a transmission space is arranged on the rear side of the cam space, a cam is fixedly installed in the cam space on the driving shaft, the cam is in contact with a rocker, the left side of the rocker is connected with the machine body through a hinge, a fixing rod is fixedly installed on the rear wall of the shaking space, a slide way is arranged on the rocker, and the fixing rod is in sliding connection with the slide way.
On the basis of the technical scheme, a first belt pulley is fixedly installed in the transmission space on the driving shaft, an engagement space is arranged on the left side of the cam space, a first rotating shaft is rotatably installed between the rear wall of the engagement space and the front wall of the transmission space, a second belt pulley is fixedly installed in the transmission space on the first rotating shaft, a belt is rotatably installed between the second belt pulley and the first belt pulley, a first gear is fixedly installed in the engagement space on the first rotating shaft, a push rod is rotatably installed on the lower side of the first rotating shaft between the rear wall of the engagement space and the rear side surface of the machine body, a push block is fixedly installed on the rear side surface of the push rod, a second gear is fixedly installed on the push block and can be engaged with the first gear, and a second rotating shaft is rotatably installed on the lower side of the push rod between the front wall and the rear wall of the engagement space, the last fixed mounting third gear of second axis of rotation, the third gear can with the second gear meshing, meshing space rear side is equipped with closed passage, the control valve internal rotation installation control valve, the intercommunication is equipped with the circulation passageway between side and the downside on the control valve.
On the basis of the technical scheme, the lifting part still includes the longitudinal symmetry fixed mounting on the second gear trailing flank, the first circular telegram magnet of symmetry fixed mounting about in the meshing space back wall, first circular telegram magnet can with first permanent magnet fixed connection, be equipped with the slider space in the meshing space diapire, fixed mounting second logical electro-magnet in the slider space diapire, the sliding mounting slider in the second logical electro-magnet, the interior fixed mounting second permanent magnet of slider downside, second permanent magnet downside with the first spring of fixed mounting between the side on the second logical electro-magnet.
On the basis of the technical scheme, bilateral symmetry is equipped with second spring space in the ejector pin, fixed mounting third three-way electromagnet on the second spring space inner wall, slidable mounting extension rod in the second spring space, the extension rod leans on fixed mounting third permanent magnet on the interior side, lean on fixed mounting fourth permanent magnet on the outer side on the extension rod, the rack leans on fixed mounting fourth four-way electromagnet on the interior side.
The invention has the beneficial effects that: according to the invention, the push rod pushes oil to generate pressure to generate power to push the ejector rod to move upwards, the weight is lifted upwards by the upward movement of the ejector rod, the cam is contacted with the pressure rod, the pressure rod moves up and down to extrude the oil in the pressure space by the rotation of the cam, the rocker is driven to swing without being pushed up and down by manpower, the manpower is saved, the efficiency is also improved, the electrified magnet and the permanent magnet are controlled to be contacted with the rack, the weight can be lowered at any time when the weight is required to be lowered, the weight can be lifted at any time when the weight is required to be lifted, the dilemma that the conventional unidirectional rack can only be.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 in accordance with the present invention;
FIG. 3 is a cross-sectional view of B-B of FIG. 1 in accordance with the present invention;
FIG. 4 is a cross-sectional view of C-C of FIG. 3 of the present invention;
fig. 5 is a partial enlarged view of D in fig. 4 according to the present invention.
Detailed Description
The invention will now be described in detail with reference to fig. 1-5, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, front and rear directions described below correspond to the front, back, left, right, top and bottom directions of the view direction of fig. 1, fig. 1 is a front view of the apparatus of the present invention, and the directions shown in fig. 1 correspond to the front, back, left, right, top and bottom directions of the apparatus of the present invention.
Referring to fig. 1 to 5, a jack device capable of freely adjusting height according to an embodiment of the present invention includes a body 20, a rocking space 36 is provided in the body 20, a power unit 80 for generating power is provided in the rocking space 36, the power unit 80 includes a rocker 35 hinged in the rocking space 36, a first sliding space 38 is provided at a lower side of the rocking space 36, a sliding rod 37 is slidably installed in the first sliding space 38, the sliding rod 37 is hinged to the rocker 35, a first valve 42 is provided in a bottom wall of the first sliding space 38, a second valve 39 is provided in a bottom wall of the first sliding space 38 and positioned at a right side of the first valve 42, oil is filled in the first sliding space 38, the rocker 35 drives the sliding rod 37 to move downward, the sliding rod 37 extrudes the oil in the first sliding space 38 into the first valve 42 to generate pressure to lift the jack,
the left side of the shaking space 36 is provided with a second sliding space 24, a lifting component 81 for lifting a heavy object is arranged in the second sliding space 24, the lifting component 81 comprises a push rod 27 which is slidably mounted in the second sliding space 24, third sliding spaces 25 are symmetrically arranged on the left and right sides of the outer side of the second sliding space 24, racks 26 are fixedly mounted on the left and right sides of the third sliding space 25, the lower side of the push rod 27 can be fixedly connected with the racks 26, when the heavy object needs to be lifted, oil enters the second sliding space 24 to lift the push rod 27 to slide upwards, the push rod 27 contacts with the heavy object, and the push rod 27 drives the heavy object to lift upwards when moving upwards.
In addition, in one embodiment, the power unit 80 further includes a cam space 32 disposed at an upper side of the rocking space 36 and communicated with a top wall of the rocking space 36, a motor 58 is fixedly installed in a front wall of the cam space 32, a driving shaft 34 is fixedly installed on an output shaft of the motor 58, a transmission space 60 is disposed at a rear side of the cam space 32, a cam 33 is fixedly installed on the driving shaft 34 in the cam space 32, the cam 33 contacts with the rocker 35, a left side of the rocker 35 is hinged to the body 20, a fixing rod 31 is fixedly installed on a rear wall of the rocking space 36, a slide 30 is disposed on the rocker 35, the fixing rod 31 is slidably connected with the slide 30, when power is supplied, the motor 58 is started, the motor 58 drives the driving shaft 34 and the cam 33 to rotate, the cam 33 rotates to drive the rocker 35 to rotate clockwise or counterclockwise, the rocker 35 rotates to push the sliding rod 37 to slide up and down to push the oil to generate power.
In addition, in one embodiment, a first pulley 57 is fixedly installed on the driving shaft 34 in the transmission space 60, an engagement space 51 is provided at the left side of the cam space 32, a first rotating shaft 56 is rotatably installed between the rear wall of the engagement space 51 and the front wall of the transmission space 60, a second pulley 53 is fixedly installed on the first rotating shaft 56 in the transmission space 60, a belt 52 is rotatably installed between the second pulley 53 and the first pulley 57, a first gear 50 is fixedly installed on the first rotating shaft 56 in the engagement space 51, a push rod 55 is rotatably installed at the lower side of the first rotating shaft 56 between the rear wall of the engagement space 51 and the rear side of the body 20, a push block 54 is fixedly installed on the rear side of the push rod 55, a second gear 62 is fixedly installed on the push block 54, and the second gear 62 can be engaged with the first gear 50, a second rotating shaft 21 is rotatably installed between the front and rear walls of the engaging space 51 at the lower side of the push rod 55, a third gear 68 is fixedly mounted on the second rotating shaft 21, the third gear 68 can be meshed with the second gear 62, a closed passage 69 is formed at the rear side of the engagement space 51, the control valve 23 is rotatably installed in the control valve 23, a flow passage 22 is communicated between the upper side and the lower side of the control valve 23, when the lifting is ready, the second gear 62 is engaged with the first gear 50 and the third gear 68, the driving shaft 34 rotates to drive the first belt pulley 57 to rotate, the first belt pulley 57 rotates to drive the belt 52 to transmit, the belt 52 drives the second belt pulley 53, the first rotating shaft 56, the first gear 50, the second gear 62, the third gear 68, the second rotating shaft 21 and the control valve 23 to rotate, the control circulation channel 22 is not communicated with the closed channel 69, and the heavy object is prepared to be lifted.
In addition, in one embodiment, the lifting member 81 further includes a first conductive magnet 59 vertically symmetrically and fixedly installed on the rear side surface of the second gear 62, a first conductive magnet 59 vertically symmetrically and fixedly installed in the rear wall of the engaging space 51, the first conductive magnet 59 can be fixedly connected with the first permanent magnet 61, a slider space 63 is installed in the bottom wall of the engaging space 51, a second conductive magnet 67 is fixedly installed in the bottom wall of the slider space 63, a slider 64 is slidably installed in the second conductive magnet 67, a second permanent magnet 65 is fixedly installed in the lower side surface of the slider 64, a first spring 66 is fixedly installed between the lower side surface of the second permanent magnet 65 and the upper side surface of the second conductive magnet 67, when the lifting is performed, the push block 54 is manually pulled backwards until the first permanent magnet 61 contacts the rear wall of the engaging space 51, the first conductive magnet 59 is electrified, and the first conductive magnet 59 attracts the first permanent magnet 61, the first permanent magnet 61 fixes the second gear 62 on the rear wall of the meshing space 51, after the fixing is completed, the second electromagnet 67 is not electrified, and the first spring 66 drives the second permanent magnet 65 and the slider 64 to slide upwards to reinforce the second gear 62 on the rear wall of the meshing space 51, so that the heavy object is ready to be lifted.
In addition, in one embodiment, a second spring space 48 is symmetrically arranged in the top rod 27, a third permanent magnet 47 is fixedly installed on the inner wall of the second spring space 48, an extension rod 70 is slidably installed in the second spring space 48, a third permanent magnet 46 is fixedly installed on the inner side surface of the extension rod 70, a fourth permanent magnet 45 is fixedly installed on the outer side surface of the extension rod 70, a fourth permanent magnet 44 is fixedly installed on the inner side surface of the rack 26, when the rack is lifted, the circulation channel 22 is rotated to be not communicated with the closed channel 69, oil enters the first valve 42, the third permanent magnet 47 is not electrified, the fourth permanent magnet 44 is electrified, the second spring 49 drives the third permanent magnet 46, the extension rod 70 and the fourth permanent magnet 45 to move outwards to contact the rack 26, the fourth permanent magnet 44 attracts the fourth permanent magnet 45, and the top rod 27 is fixedly connected with the rack 26, the oil pushes the top rod 27 and the extension rod 70 to move upwards to drive the heavy object to lift.
At the beginning: the third electromagnet 47 is electrified, the extension rod 70 is attracted and fixed on one side wall of the second spring space 48 close to the inner side by the third electromagnet 47, the second electromagnet 67 is electrified, and the second permanent magnet 65 is attracted by the second electromagnet 67 to fix the sliding block 64 on the bottom wall of the sliding block space 63;
when the jack is used: when power is supplied, the motor 58 is started, the motor 58 drives the driving shaft 34 and the cam 33 to rotate, the cam 33 rotates to drive the rocker 35 to rotate clockwise or anticlockwise, the rocker 35 rotates to push the sliding rod 37 to slide up and down to push oil to generate power, when the lifting is ready, the second gear 62 is meshed with the first gear 50 and the third gear 68, the driving shaft 34 rotates to drive the first belt pulley 57 to rotate, the first belt pulley 57 rotates to drive the belt 52 to transmit, the belt 52 drives the second belt pulley 53, the first rotating shaft 56, the first gear 50, the second gear 62, the third gear 68, the second rotating shaft 21 and the control valve 23 to rotate, the control flow channel 22 is not communicated with the closed channel 69 to prepare for lifting heavy objects,
when the lifting is carried out, the push block 54 is manually pulled backwards until the first permanent magnet 61 contacts the rear wall of the meshing space 51, the first electrified magnet 59 is electrified, the first electrified magnet 59 attracts the first permanent magnet 61, the first permanent magnet 61 fixes the second gear 62 on the rear wall of the meshing space 51, after the fixing is well carried out, the second electrified magnet 67 is not electrified, the first spring 66 drives the second permanent magnet 65 and the slide block 64 to slide upwards to reinforce the second gear 62 on the rear wall of the meshing space 51, a heavy object is prepared to be lifted, when the lifting is carried out, the flow channel 22 is rotated to be not communicated with the closed channel 69, oil enters the first valve 42, the third electromagnet 47 is not electrified, the fourth electromagnet 44 is electrified, the second spring 49 drives the third permanent magnet 46, the extension rod 70 and the fourth permanent magnet 45 to move outwards to contact the rack 26, the fourth permanent magnet 44 attracts the fourth permanent magnet 45, and the push rod 27 is fixedly connected with the rack 26, the oil pushes the top rod 27 and the extension rod 70 to move upwards to drive the heavy object to lift.
The invention has the beneficial effects that: according to the invention, the push rod pushes oil to generate pressure to generate power to push the ejector rod to move upwards, the weight is lifted upwards by the upward movement of the ejector rod, the cam is contacted with the pressure rod, the pressure rod moves up and down to extrude the oil in the pressure space by the rotation of the cam, the rocker is driven to swing without being pushed up and down by manpower, the manpower is saved, the efficiency is also improved, the electrified magnet and the permanent magnet are controlled to be contacted with the rack, the weight can be lowered at any time when the weight is required to be lowered, the weight can be lifted at any time when the weight is required to be lifted, the dilemma that the conventional unidirectional rack can only be.
It will be apparent to those skilled in the art that various modifications may be made to the above embodiments without departing from the general spirit and concept of the invention. All falling within the scope of protection of the present invention. The protection scheme of the invention is subject to the appended claims.
Claims (5)
1. The utility model provides a but jack device of free height-adjusting, includes the fuselage, its characterized in that: a shaking space is arranged in the machine body, a power part for generating power is arranged in the shaking space, the power part comprises a rocker which is hinged in the shaking space, a first sliding space is arranged at the lower side of the shaking space, a sliding rod is slidably arranged in the first sliding space and is hinged with the rocker, a first valve is communicated and arranged in the bottom wall of the first sliding space, a second valve is communicated and arranged at the right side of the first valve in the bottom wall of the first sliding space, oil is placed in the first sliding space, the rocker drives the sliding rod to move downwards, the oil in the first sliding space is extruded into the first valve by the sliding rod to generate pressure for lifting the jack,
the lifting device is characterized in that a second sliding space is arranged on the left side of the shaking space, a lifting component used for lifting a heavy object is arranged in the second sliding space, the lifting component comprises an ejector rod which is slidably mounted in the second sliding space, third sliding spaces are symmetrically arranged on the left and right sides of the outer side of the second sliding space, racks are fixedly mounted on the left and right sides of the third sliding space, the lower side of the ejector rod can be fixedly connected with the racks, when the heavy object needs to be lifted, oil enters the second sliding spaces to lift the ejector rod to slide upwards, the upper side of the ejector rod is in contact with the heavy object, and the heavy object is driven to lift upwards when the ejector rod moves.
2. A freely height adjustable jack device as claimed in claim 1, wherein: the power component further comprises a cam space communicated with the upper side of the shaking space and communicated with the top wall of the shaking space, a motor is fixedly installed in the front wall of the cam space, a driving shaft is fixedly installed on an output shaft of the motor, a transmission space is arranged on the rear side of the cam space, a cam is fixedly installed in the cam space on the driving shaft, the cam is in contact with a rocker, the left side of the rocker is hinged with the machine body, a fixing rod is fixedly installed on the rear wall of the shaking space, a slide way is arranged on the rocker, and the fixing rod is in sliding connection with the slide way.
3. A freely height adjustable jack device as claimed in claim 1, wherein: a first belt pulley is fixedly arranged on the driving shaft in the transmission space, an engagement space is arranged on the left side of the cam space, a first rotating shaft is rotatably arranged between the rear wall of the engagement space and the front wall of the transmission space, a second belt pulley is fixedly arranged on the first rotating shaft in the transmission space, a belt is rotatably arranged between the second belt pulley and the first belt pulley, a first gear is fixedly arranged on the first rotating shaft in the engagement space, a push rod is rotatably arranged on the lower side of the first rotating shaft between the rear wall of the engagement space and the rear side surface of the machine body, a push block is fixedly arranged on the rear side surface of the push rod, a second gear is fixedly arranged on the push block and can be engaged with the first gear, and a second rotating shaft is rotatably arranged on the lower side of the push rod between the front wall and the rear wall of the engagement space, the last fixed mounting third gear of second axis of rotation, the third gear can with the second gear meshing, meshing space rear side is equipped with closed passage, the control valve internal rotation installation control valve, the intercommunication is equipped with the circulation passageway between side and the downside on the control valve.
4. A freely height adjustable jack device as claimed in claim 1, wherein: the lifting part still includes longitudinal symmetry fixed mounting on the second gear trailing flank, the first circular telegram magnet of longitudinal symmetry fixed mounting in the meshing space back wall, first circular telegram magnet can with first permanent magnet fixed connection, be equipped with the slider space in the meshing space diapire, fixed mounting second logical electro-magnet in the slider space diapire, the sliding mounting slider in the second logical electro-magnet, the interior fixed mounting second permanent magnet of slider downside, second permanent magnet downside with the first spring of fixed mounting between the side on the second logical electro-magnet.
5. A freely height adjustable jack device as claimed in claim 1, wherein: bilateral symmetry is equipped with second spring space in the ejector pin, fixed mounting third tee bend electro-magnet on the second spring space inner wall, slidable mounting extension rod in the second spring space, the extension rod leans on fixed mounting third permanent magnet on the interior side, lean on fixed mounting fourth permanent magnet on the outer side on the extension rod, the rack leans on fixed mounting fourth cross electro-magnet on the interior side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911328544.XA CN110921549A (en) | 2019-12-20 | 2019-12-20 | Jack device with freely adjustable height |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911328544.XA CN110921549A (en) | 2019-12-20 | 2019-12-20 | Jack device with freely adjustable height |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110921549A true CN110921549A (en) | 2020-03-27 |
Family
ID=69863525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911328544.XA Withdrawn CN110921549A (en) | 2019-12-20 | 2019-12-20 | Jack device with freely adjustable height |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110921549A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114715809A (en) * | 2022-04-27 | 2022-07-08 | 江苏飞达液压成套设备有限公司 | High-pressure large-flow hydraulic device |
| CN116409726A (en) * | 2023-06-09 | 2023-07-11 | 泰州市捷鑫机械设备有限公司 | Quick detach formula bumper shock absorber support |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB154078A (en) * | 1919-12-10 | 1920-11-25 | Archibald Douglas Powell | Improvements in or relating to lifting jacks |
| FR825367A (en) * | 1936-02-06 | 1938-03-02 | Improvements to devices for reducing friction in screw and nut type systems | |
| CN87104263A (en) * | 1987-06-19 | 1988-12-28 | 康连仲 | Step pitch self-synchronizing jack |
| CN201236128Y (en) * | 2008-05-27 | 2009-05-13 | 俞涛 | Electric hydraulic jack |
| CN203284131U (en) * | 2013-04-27 | 2013-11-13 | 甘信元 | Quick-lifting lifting jack |
-
2019
- 2019-12-20 CN CN201911328544.XA patent/CN110921549A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB154078A (en) * | 1919-12-10 | 1920-11-25 | Archibald Douglas Powell | Improvements in or relating to lifting jacks |
| FR825367A (en) * | 1936-02-06 | 1938-03-02 | Improvements to devices for reducing friction in screw and nut type systems | |
| CN87104263A (en) * | 1987-06-19 | 1988-12-28 | 康连仲 | Step pitch self-synchronizing jack |
| CN201236128Y (en) * | 2008-05-27 | 2009-05-13 | 俞涛 | Electric hydraulic jack |
| CN203284131U (en) * | 2013-04-27 | 2013-11-13 | 甘信元 | Quick-lifting lifting jack |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114715809A (en) * | 2022-04-27 | 2022-07-08 | 江苏飞达液压成套设备有限公司 | High-pressure large-flow hydraulic device |
| CN114715809B (en) * | 2022-04-27 | 2022-12-13 | 江苏飞达液压成套设备有限公司 | High-pressure large-flow hydraulic device |
| CN116409726A (en) * | 2023-06-09 | 2023-07-11 | 泰州市捷鑫机械设备有限公司 | Quick detach formula bumper shock absorber support |
| CN116409726B (en) * | 2023-06-09 | 2023-08-18 | 泰州市捷鑫机械设备有限公司 | Quick detach formula bumper shock absorber support |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200327 |