CN106517008A - Mechanical support leg - Google Patents
Mechanical support leg Download PDFInfo
- Publication number
- CN106517008A CN106517008A CN201611039754.3A CN201611039754A CN106517008A CN 106517008 A CN106517008 A CN 106517008A CN 201611039754 A CN201611039754 A CN 201611039754A CN 106517008 A CN106517008 A CN 106517008A
- Authority
- CN
- China
- Prior art keywords
- supporting leg
- bushing
- drive shaft
- lifting screw
- support leg
- Prior art date
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/72—Counterweights or supports for balancing lifting couples
- B66C23/78—Supports, e.g. outriggers, for mobile cranes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Accommodation For Nursing Or Treatment Tables (AREA)
Abstract
The invention discloses a mechanical support leg. The mechanical support leg comprises a support leg bushing, a lifting screw rod, a support leg and a driving mechanism, wherein an opening is formed in the lower end of an inner cavity of the support leg bushing; a bearing base is erected at the upper part of the inner cavity of the support leg bushing; the upper end of the lifting screw rod rotationally coats the bearing base; the upper part of the support leg is rotationally sleeved in the inner cavity of the support leg bushing; a nut bracket engaged with the lifting screw rod is arranged at the upper end of the support leg through a screw hole; the driving mechanism is used for driving the lifting screw rod to rotate, so that the support leg can be lifted corresponding to the support leg bushing; preferentially, the driving mechanism includes a driving shaft and a hand rocking crank; the driving shaft is connected with the upper end of the lifting screw rod through a pair of bevel gears; and the driving shaft is controlled to rotate by the hand rocking crank. The mechanical support leg has a lifting function, can freely adjust the lifting height, is convenient and fast in use, and has such advantages as simple structure, reliability and energy conservation.
Description
Technical field
The present invention relates to supporting leg field, more particularly to a kind of mechanical type supporting leg.
Background technology
Many crane gears or pulling equipment are required for additional supporting leg to support after reaching job site, supporting leg common at present
There are fluid pressure type and mechanical fixed-type external two types.Fluid pressure type supporting leg needs to be equipped with hydraulic power system, by hydraulic valve control
The lifting of lower limb, not only consumes energy, and is also contemplated that the leakage ftercompction problem of hydraulic system in the equipment course of work, and maintenance is also compared
Difficulty, therefore the unsuitable long time continuous working of fluid pressure type supporting leg.Mechanical type supporting leg is made up of supporting leg, support and fixing bolt,
There is row's aperture in the longitudinal direction of supporting leg, support only one of which is arranged on the chassis of equipment through aperture, after reaching operating position, by
Supporting leg is manually put down, after reaching certain altitude, bolt is fixed through the aperture of alignment, this kind of supporting leg is unable to lifting equipment, little
The distance in hole is fixed and causes adjustable limited height, it is difficult to ensure that equipment is necessarily in horizontal working condition, and load mistake
When big, bolt is easily bent deformation so that dismounting and installation are all relatively difficult.
The information for being disclosed in the background section is merely intended to increase the understanding of the general background to the present invention, and should not
When the prior art for being considered to recognize or imply the information structure in any form well known to persons skilled in the art.
The content of the invention
It is an object of the invention to provide a kind of mechanical type supporting leg, mends so as to overcome existing fluid pressure type supporting leg to there is leakage
Pressure problem, and standard machinery formula supporting leg is unable to lifting equipment and easily causes to dismantle and installation is compared because bolts bend deforms
Difficult shortcoming.
For achieving the above object, the invention provides a kind of mechanical type supporting leg, wherein, including：Supporting leg bushing, its inner chamber
Lower end is provided with opening, and the upper shelf of the inner chamber of the supporting leg bushing is provided with a bearing base；Lifting screw, its upper end is can turn
Dynamic mode is sheathed on the bearing base；Supporting leg, its top are movably set in the inner chamber of the supporting leg bushing, and the supporting leg
Upper end be provided with one the nut bearing being connected be engaged by screw and the lifting screw；And drive mechanism, its use
In driving the lifting screw to be rotated, so that the supporting leg can be lifted relative to the supporting leg bushing.
Preferably, in above-mentioned technical proposal, in the outside wall surface of the supporting leg bushing, it is provided with stirrup.
Preferably, in above-mentioned technical proposal, the upper end of the supporting leg bushing is provided with the opening communicated with its inner chamber, and institute
The upper end for stating supporting leg bushing is provided with a top cover.
Preferably, in above-mentioned technical proposal, the upper end of the lifting screw is sheathed on the bearing base by thrust bearing
On.
Preferably, in above-mentioned technical proposal, the upper end of the lifting screw is sheathed on institute by two thrust bearings
State on bearing base, one of them described thrust bearing is located at the top of the bearing base, another described thrust bearing is located at institute
State the bottom of bearing base.
Preferably, in above-mentioned technical proposal, the drive mechanism includes：Drive shaft, which is rotatably horizontal
It is set up in the inner chamber of the supporting leg bushing, and upper end of the drive shaft by bevel-gear sett with the lifting screw is connected
Connect；And drive shaft turns mechanism, which is used to drive the drive shaft to be rotated.
Preferably, in above-mentioned technical proposal, the two ends of the drive shaft are respectively sheathed on one and are arranged at the supporting leg bushing
Side wall on bearing insert in.
Preferably, in above-mentioned technical proposal, the drive shaft turns mechanism be a crank handle, the one of the crank handle
End is connected with one end of the drive shaft.
Preferably, in above-mentioned technical proposal, one end of the crank handle is provided with four corner apertures in, the drive shaft
One end is provided with four angle head corresponding with interior four corner apertures, and the crank handle is by four corner apertures in described can dismantle
Mode be sheathed on four angle head of the drive shaft.
Preferably, in above-mentioned technical proposal, the lower end of the supporting leg is provided with one in up-small and down-big trumpet-shaped base.
Compared with prior art, the present invention has the advantages that：
1st, the present invention can be used to be arranged on needs long time continuous working, and needs the machinery of constantly transfer job site to set
Standby upper, which passes through to drive lifting screw to be rotated to control supporting leg stretch out or withdraw, so as to make it have lifting function, and
The flexible stroke of lower limb is big, and adjustable height freely can be adjusted, and the self-locking action by lifting screw with nut bearing is locked
Fixed, so that plant equipment can be made stably to stop after reaching job site, which is particularly well-suited to field work.The present invention's makes
With convenient and swift, and also there is simple structure, reliability and energy-conservation.
2nd, present invention may also apply to push up act equipment or other weights temporarily.
3rd, lifting screw of the invention is installed on bearing base by thrust bearing, is made supporting leg not only bear compression and is carried
Lotus, and tensile load can be resisted, adaptability is good.
4th, the present invention by crank handle come control drive shaft drive lifting screw rotated, its required driving torque
It is little, manually can easily shake, simple to operate, easy to maintenance, easy to manufacture, and which is not required to fuel oil and electric power, work noiselessness,
Low-carbon environment-friendly.
Description of the drawings
Fig. 1 is the structural representation according to mechanical type supporting leg of the present invention.
Main Reference Numerals explanation：
1- stirrups, 2- supporting leg bushings, 3- supporting legs, 4- lifting screws, 5- nut bearings, 6- lower thrust-bearings, 7- lifting force
Bearing, 8- bearing bases, 9- bevel gear wheels, 10- keys, 11- bevel pinions, 12- top covers, 13- nuts, 14- bearing inserts, 15- drive
Moving axis, 16- crank handles.
Specific embodiment
Below in conjunction with the accompanying drawings, the specific embodiment of the present invention is described in detail, it is to be understood that the guarantor of the present invention
Shield scope is not limited by specific embodiment.
Explicitly indicate that unless otherwise other, otherwise in entire disclosure and claims, term " including " or its change
Change such as "comprising" or " including " etc. and will be understood to comprise stated element or ingredient, and do not exclude other units
Part or other ingredients.
Fig. 1 shows a kind of structural representation of mechanical type supporting leg according to the preferred embodiment of the present invention, the mechanical type
Supporting leg includes supporting leg bushing 2, bearing base 8, lifting screw 4, supporting leg 3, nut bearing 5 and drive mechanism, with reference to Fig. 1, supporting leg
Bushing 2 is in hollow cylindrical shape, and the lower end of the inner chamber of supporting leg bushing 2 is provided with opening, and the upper shelf of the inner chamber of supporting leg bushing 2
A bearing base 8 is provided with, bearing base 8 is made by steel plate.The upper end of supporting leg bushing 2 may also set up opening of communicating with inner chamber
Mouthful, and the upper end of supporting leg bushing 2 is provided with a top cover 12, for covering the opening of its upper end, top cover 12 is threaded connection
Mode be arranged at the upper end of supporting leg bushing 2.After opening top cover 12, can be easy to maintaining be carried out to each part, and be easy to
Each part is installed or removed, while top cover 12 can be also used for support weight.Preferably, arrange in the outside wall surface of supporting leg bushing 2
There is stirrup 1, stirrup 1 can be outer wall can dismantle, or that supporting leg bushing 2 is directly arranged at by way of welding
On face.Supporting leg bushing 2 conveniently can be fixed on equipment by stirrup 1.
With continued reference to Fig. 1, lifting screw 4 adopts common motion thread, the side of the upper end of lifting screw 4 rotating
Formula is sheathed on bearing base 8, so as to can rotationally positioned at supporting leg bushing 2 inner chamber in.Preferably, lifting screw 4 is upper
End is sheathed on bearing base 8 by thrust bearing.It is further preferred that the upper end of lifting screw passes through upper and lower two thrust bearings
It is sheathed on bearing base, wherein up-thrust bearing 7 is located at the top of bearing base 8, lower thrust-bearing 6 is located at the bottom of bearing base 8,
The upper end of lifting screw 4 is sequentially sheathed on lower thrust-bearing 6, bearing base 8 and up-thrust bearing 7 from bottom to top.Lifting screw 4
Upper end is installed on bearing base 8 by thrust bearing, so that supporting leg 4 can not only bear compressive load, and can resist stretching
Load, its adaptability are good.
With continued reference to Fig. 1, the top movable of supporting leg 3 is sheathed in the inner chamber of supporting leg bushing 2, and supporting leg 3 is in supporting leg bushing 2
Can either rotate in inner chamber and can move up and down.Supporting leg 3 is hollow structure, and its upper end is provided with a nut bearing 5, nut
Seat 5 is engaged with lifting screw 4 by screw and is connected, and the lower end of lifting screw 4 is extended downwardly in the inner chamber of supporting leg 3.It is excellent
Selection of land, the lower end of supporting leg 3 are provided with one in up-small and down-big trumpet-shaped base.When rotation lifting screw 4 or rotation supporting leg 3,
Supporting leg 3 is just lifted relative to lifting screw 4 under engagement of the nut bearing 5 with lifting screw 4.Drive mechanism is used for
Lifting screw 4 is driven to be rotated, when lifting screw 4 is rotated to a direction, the lower end of supporting leg 3 can be moved down with constantly
To overhanging for supporting leg bushing 2, when lifting screw 4 is rotated to opposite direction, supporting leg 3 just rise be recovered to supporting leg bushing 2 it
It is interior.
With continued reference to Fig. 1, preferably, drive mechanism is used to drive lifting screw 4 to be rotated the present invention, and drive mechanism
Including drive shaft 15 and drive shaft turns mechanism, rotatably transverse strands are located at supporting leg bushing 2 to drive shaft 15
In inner chamber, and upper end of the drive shaft 15 by bevel-gear sett with lifting screw 4 is attached, wherein 9 fixed cover of bevel gear wheel
Located at the upper end of lifting screw 4, coordinated by key 10 between the two, and the upper end of bevel gear wheel 9 is locked by nut 13
Tightly, pad is provided between nut 13 and bevel gear wheel.In drive shaft 15, both pass through key 10 to 11 fixed cover of bevel pinion
Coordinated, bevel pinion 11 is connected with the engagement of bevel gear wheel 9, to realize the transmission between drive shaft 15 and lifting screw 4.It is excellent
Selection of land, the two ends of drive shaft 15 are respectively sheathed in a bearing insert 14 being arranged on the side wall of supporting leg bushing 2.Drive shaft turns
Motivation structure is rotated for controlling drive shaft 15.Drive shaft turns mechanism can be the actuating units such as motor, to automatically control
Drive shaft 15 is rotated, but it is currently preferred be, drive shaft turns mechanism be a crank handle 16, the one of crank handle 16
End is connected with one end of drive shaft 15, so as to manually control drive shaft 15 by crank handle 16 rotate.The present invention is by hand
Crank 16 come control drive shaft 15 drive lifting screw 4 rotated, in design load, its required driving torque is little, manually
Can easily shake, simple to operate, easy to maintenance, easy to manufacture, and which is not required to fuel oil and electric power, work noiselessness, low-carbon (LC) ring
Protect.
With continued reference to Fig. 1, it is preferable that one end of crank handle 16 is entered with one end of drive shaft 15 in the way of it can dismantle
Row connection, Ke Yishi, one end of crank handle 16 are provided with four corner apertures in, and one end of drive shaft 15 is provided with one with interior corner
Corresponding four angle head in hole, crank handle 16 is interior four corner apertures so that four angle heads of drive shaft 15 are sheathed on by way of can dismantling
On.Crank handle 16 can be dismantled, when not in use, to be easy to the placement of whole device.
When the present invention is used as conventional supporting leg, supporting leg bushing 2 is fixed on by stirrup 1 chassis of equipment with bolt
On.After equipment reaches job site, crank handle 16 is loaded onto, first supporting leg 3 is rotated with handss are (viewed from above) clockwise, make to prop up
The base Rapid contact ground of lower limb 3.Handle 16 is rotated clockwise again, drive shaft 15 and bevel pinion 11 is also rotated clockwise,
So as to drive bevel gear wheel 9 to rotate counterclockwise, lifting screw 4 is made to increase and lifting means chassis.Equipment is given rise to into suitable height
Degree stops shake crank handle 16, and is removed.As the common drive screw thread that lifting screw 4 is adopted has self-locking action,
Relative motion will not be produced in the range of design load, the operating position of equipment is smoothly ensure that.When work completes to need transfer
During equipment, crank handle 16 is installed, rotating counterclockwise crank 16 declines equipment chassis, when the base of supporting leg 3 leaves ground
When, supporting leg 3 is rotated counterclockwise with handss so as to quickly up move, until supporting leg 3 is all withdrawn, then by crank handle 16
Remove.
The present invention is lifted as interim top when using, and by supporting leg bushing 2 in by lifting underbelly, is turned with handss counterclockwise
Dynamic supporting leg 3, makes 12 rapid increase of top cover and contacts the base contacts of lifted object and supporting leg 3 to after ground, load onto hand
Crank 16 is simultaneously rotated clockwise, and makes top cover 12 continue rising and object is lifted, object is given rise to handss after proper height
Shake crank 16 to remove.When work is completed, crank handle 16 is installed, rotates counterclockwise crank 16, put down lifted object,
After top cover 12 departs from the object lifted by top, supporting leg is taken out, supporting leg 3 is rotated clockwise with handss so as to be quickly returning to initial bit
Put, remove crank handle 16.
The present invention can be used to be arranged on needs long time continuous working, and needs the plant equipment of constantly transfer job site
On, its pass through drive lifting screw 4 be rotated to control supporting leg 3 stretch out or withdraw, so as to make it have lifting function, with
Equally there is jack top to lift function, can lift equipment and weight.And the flexible stroke of supporting leg 3 is big, adjustable height can be certainly
By adjusting, and the self-locking action by lifting screw 4 with nut bearing 5 is locked, so that plant equipment can be made to reach work
Stably stop after making place, its high working efficiency, mobility are good, are particularly well-suited to field work.And the user of the present invention
Just it is quick, and also there is simple structure, reliability and energy-conservation.
It is aforementioned to the present invention specific illustrative embodiment description be in order to illustrate and illustration purpose.These descriptions
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to above-mentioned teaching, much can be changed
And change.The purpose of selecting and describing the exemplary embodiment is that explaining that the certain principles and its reality of the present invention should
With so that those skilled in the art can realize and using the present invention a variety of exemplaries and
A variety of selections and change.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (10)
1. a kind of mechanical type supporting leg, it is characterised in that include：
Supporting leg bushing, the lower end of its inner chamber are provided with opening, and the upper shelf of the inner chamber of the supporting leg bushing is provided with a bearing base；
Lifting screw, its upper end are rotatably sheathed on the bearing base；
Supporting leg, its top are movably set in the inner chamber of the supporting leg bushing, and the upper end of the supporting leg is provided with one by screw
The nut bearing being connected is engaged with the lifting screw；And
Drive mechanism, which is used to drive the lifting screw to be rotated, so that the supporting leg can be served as a contrast relative to the supporting leg
Set is lifted.
2. mechanical type supporting leg according to claim 1, it is characterised in that be provided with steel in the outside wall surface of the supporting leg bushing
Hoop.
3. mechanical type supporting leg according to claim 1, it is characterised in that the upper end of the supporting leg bushing be provided with which
The opening that chamber communicates, and the upper end of the supporting leg bushing is provided with a top cover.
4. mechanical type supporting leg according to claim 1, it is characterised in that the upper end of the lifting screw passes through thrust bearing
It is sheathed on the bearing base.
5. mechanical type supporting leg according to claim 4, it is characterised in that the upper end of the lifting screw is by described in two
Thrust bearing is sheathed on the bearing base, and one of them described thrust bearing is located at the top of the bearing base, another institute
Thrust bearing is stated positioned at the bottom of the bearing base.
6. mechanical type supporting leg according to claim 1, it is characterised in that the drive mechanism includes：
Drive shaft, its rotatably transverse strands located at the supporting leg bushing inner chamber in, and the drive shaft pass through one
Upper end of the bevel gear with the lifting screw is attached；And
Drive shaft turns mechanism, which is used to drive the drive shaft to be rotated.
7. mechanical type supporting leg according to claim 6, it is characterised in that the two ends of the drive shaft are respectively sheathed on and set
In the bearing insert being placed on the side wall of the supporting leg bushing.
8. mechanical type supporting leg according to claim 6, it is characterised in that the drive shaft turns mechanism is a hand song
Handle, one end of the crank handle are connected with one end of the drive shaft.
9. mechanical type supporting leg according to claim 8, it is characterised in that one end of the crank handle is provided with four in
Corner apertures, one end of the drive shaft are provided with four angle head corresponding with interior four corner apertures, and the crank handle is by described
Interior four corner apertures is sheathed on four angle head of the drive shaft in the way of it can dismantle.
10. mechanical type supporting leg according to claim 1, it is characterised in that the lower end of the supporting leg is provided with and presents little
Big trumpet-shaped base down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611039754.3A CN106517008A (en) | 2016-11-21 | 2016-11-21 | Mechanical support leg |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611039754.3A CN106517008A (en) | 2016-11-21 | 2016-11-21 | Mechanical support leg |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106517008A true CN106517008A (en) | 2017-03-22 |
Family
ID=58356324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611039754.3A Pending CN106517008A (en) | 2016-11-21 | 2016-11-21 | Mechanical support leg |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106517008A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654799A (en) * | 2017-11-08 | 2018-02-02 | 苏州大学 | Wind-tunnel wind resistance tests the ground leg structure of locating platform |
| CN110395664A (en) * | 2019-08-02 | 2019-11-01 | 南京江宁区上峰国银标准件厂 | A kind of intelligent machine equipment high for industrial stability |
| CN110950251A (en) * | 2019-12-24 | 2020-04-03 | 浙江浙建钢结构有限公司 | Hoisting frame with speed regulation function |
| CN111483929A (en) * | 2020-05-18 | 2020-08-04 | 常州工程职业技术学院 | Can change small crane of lifting hook form |
| CN116639587A (en) * | 2023-04-18 | 2023-08-25 | 安徽亿匠机械设备有限公司 | Hoisting device for mechanical equipment maintenance |
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|---|---|---|---|---|
| GB599946A (en) * | 1945-09-25 | 1948-03-24 | Harry Morgan Yeatman | Improvements in and relating to exhaust temperature measurements in internal combustion engines |
| US20090057633A1 (en) * | 2007-07-16 | 2009-03-05 | Russ Beck | Jack assembly |
| CN201473261U (en) * | 2009-08-13 | 2010-05-19 | 合肥市华林模具有限公司 | Leveling device |
| CN101830211A (en) * | 2010-05-14 | 2010-09-15 | 青岛吉祥荣机械有限公司 | Semitrailer lifting landing leg |
| CN201998962U (en) * | 2010-10-25 | 2011-10-05 | 安徽博微长安电子有限公司 | Electromechanical leveling support leg |
| CN202107478U (en) * | 2011-05-09 | 2012-01-11 | 曾坤富 | Synchronous mechanical cylinder |
| CN202704929U (en) * | 2012-07-09 | 2013-01-30 | 山东铁鹰建设工程有限公司 | Bidirectional mechanical lifting jack |
| CN202783148U (en) * | 2012-04-23 | 2013-03-13 | 山东岱阳重工机械有限公司 | Supporting device for special trailer |
| CN104228784A (en) * | 2013-06-18 | 2014-12-24 | 塞昆特高性能产品公司 | Jack assembly |
-
2016
- 2016-11-21 CN CN201611039754.3A patent/CN106517008A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB599946A (en) * | 1945-09-25 | 1948-03-24 | Harry Morgan Yeatman | Improvements in and relating to exhaust temperature measurements in internal combustion engines |
| US20090057633A1 (en) * | 2007-07-16 | 2009-03-05 | Russ Beck | Jack assembly |
| CN201473261U (en) * | 2009-08-13 | 2010-05-19 | 合肥市华林模具有限公司 | Leveling device |
| CN101830211A (en) * | 2010-05-14 | 2010-09-15 | 青岛吉祥荣机械有限公司 | Semitrailer lifting landing leg |
| CN201998962U (en) * | 2010-10-25 | 2011-10-05 | 安徽博微长安电子有限公司 | Electromechanical leveling support leg |
| CN202107478U (en) * | 2011-05-09 | 2012-01-11 | 曾坤富 | Synchronous mechanical cylinder |
| CN202783148U (en) * | 2012-04-23 | 2013-03-13 | 山东岱阳重工机械有限公司 | Supporting device for special trailer |
| CN202704929U (en) * | 2012-07-09 | 2013-01-30 | 山东铁鹰建设工程有限公司 | Bidirectional mechanical lifting jack |
| CN104228784A (en) * | 2013-06-18 | 2014-12-24 | 塞昆特高性能产品公司 | Jack assembly |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654799A (en) * | 2017-11-08 | 2018-02-02 | 苏州大学 | Wind-tunnel wind resistance tests the ground leg structure of locating platform |
| CN110395664A (en) * | 2019-08-02 | 2019-11-01 | 南京江宁区上峰国银标准件厂 | A kind of intelligent machine equipment high for industrial stability |
| CN110950251A (en) * | 2019-12-24 | 2020-04-03 | 浙江浙建钢结构有限公司 | Hoisting frame with speed regulation function |
| CN111483929A (en) * | 2020-05-18 | 2020-08-04 | 常州工程职业技术学院 | Can change small crane of lifting hook form |
| CN116639587A (en) * | 2023-04-18 | 2023-08-25 | 安徽亿匠机械设备有限公司 | Hoisting device for mechanical equipment maintenance |
| CN116639587B (en) * | 2023-04-18 | 2024-02-27 | 重庆能源职业学院 | Hoisting device for mechanical equipment maintenance |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170322 |
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| RJ01 | Rejection of invention patent application after publication |