CN108275625A - A kind of 220kV disconnecting switch climbing operation platform - Google Patents
A kind of 220kV disconnecting switch climbing operation platform Download PDFInfo
- Publication number
- CN108275625A CN108275625A CN201711398152.1A CN201711398152A CN108275625A CN 108275625 A CN108275625 A CN 108275625A CN 201711398152 A CN201711398152 A CN 201711398152A CN 108275625 A CN108275625 A CN 108275625A
- Authority
- CN
- China
- Prior art keywords
- vacuum chamber
- piston
- cavity
- disconnecting switch
- piston head
- 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
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Classifications
-
- 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
- B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
- B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
-
- 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
- B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
- B66F17/006—Safety devices, e.g. for limiting or indicating lifting force for working platforms
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
The present invention relates to electric power overhaul power tool technical fields, more particularly, to a kind of 220kV disconnecting switch climbing operation platform.A kind of 220kV disconnecting switch climbing operation platform, including the chassis set gradually from lower to upper, fixed column, lifting column and job platform, lifting gear is set between lifting column and fixed column, lifting gear includes cavity, receive air cavity, switch bolt, regulation handle and first piston, falling apparatus is provided in cavity, falling apparatus includes rotary electric machine, bevel gear set and vacuum chamber, vacuum chamber is provided in vacuum chamber, second piston is provided in vacuum chamber, second piston includes the second piston head being close to vacuum chamber side wall and second piston bar, the one end of second piston bar far from second piston head extends to outside vacuum chamber and is provided with thread segment, the one end of vacuum chamber far from second piston bar is provided with air hole, it receives and is provided with gas outlet on wall of the air cavity far from air flue side.Conveniently moving of the present invention, it is safe, it lifts and stablizes fast.
Description
Technical field
The present invention relates to electric power overhaul power tool technical field, ascend a height work more particularly, to a kind of 220kV disconnecting switch
Industry platform.
Background technology
220kV disconnecting switch operation first choice of ascending a height is ascended a height Operation Van, but in operation faciostenosis or electrification situation complex situations
Under can not carry out operation of ascending a height；Then can be ascended a height operation using double ladder, cannot be complete by environmental restrictions using double ladder operation
Close to setting, one side personnel climb to the top of a mountain, and to violate safety operating risk big for operation, on the other hand two people is needed to help, ground not
Shaking is had when smooth when personnel's operation.
As Chinese patent notification number is：CN105271078A, on January 27th, 2016, a kind of electric power of bulletin was ascended a height operation
Vehicle, including haulage gear and wagon box, lifting pedestal and tool box are fixed in the wagon box, and the tool box accommodates power equipment maintaining
Tool, the lifting pedestal are equipped with hydraulic telescopic machanism, workbench are equipped at the top of the hydraulic telescopic machanism.The Operation Van
Volume is larger, is easy to be limited by place, inflexible for use.
Invention content
The present invention primarily directed to the above problem, provide one kind can flexible operation, conveniently moving is safe, lifting
Stablize efficiently 220kV disconnecting switch climbing operation platform.
The purpose of the present invention is mainly to be achieved by following proposal：A kind of 220kV disconnecting switch is ascended a height operation horizontal
Platform, including the chassis, fixed column, lifting column and the job platform that set gradually from lower to upper, the side setting of the fixed column
There is operator, lifting gear is set between the lifting column and fixed column, the lifting gear includes being arranged in fixed column
Interior cavity, be arranged in lifting column for store high pressure gas receive air cavity, positioned at receive air cavity one end switch bolt, with switch
The hinged regulation handle of bolt and positioned at the first piston of the air cavity other end is received, the first piston includes first piston head and
One piston rod, the first piston head with receive air cavity side wall and be close to, the described side for receiving air cavity is provided with for connecting the
The air flue of one piston head upper and lower ends cavity corresponds to First piston bar on the bottom surface of the cavity and is provided with bearing, switchs bolt
When opening, air pressure useful effect power in first piston head upper surface is consistently greater than first piston head lower surface useful effect power and lifting
The sum of load-carrying of column is provided with falling apparatus in the cavity, and the falling apparatus includes rotary electric machine, bevel gear
Group and vacuum chamber, the rotary electric machine are electrically connected with operator, and vacuum chamber, the vacuum are provided in the vacuum chamber
Intracavitary is provided with second piston, and the second piston includes the second piston head being close to vacuum chamber side wall and second piston
Bar, the one end of the second piston bar far from second piston head extend to outside vacuum chamber and are provided with thread segment, and described is true
The one end of empty room far from second piston bar is provided with air hole, and the bevel gear set includes first bevel gear and bores tooth with first
The second bevel gear for taking turns cooperation, at the center of the first bevel gear and the output axis connection of rotary electric machine, described second
It is threadedly coupled with the thread segment at the center of bevel gear, described receive is provided with outlet on wall of the air cavity far from air flue side
Mouthful, it is connected by elastic tracheae between the gas outlet and air hole.The side of fixed column is provided with operator, passes through operation
Device can operate whole device, and lifting gear is arranged between lifting column and fixed column, and lifting gear can realize lifting column solid
Lifting on fixed column, lifting gear include the cavity being arranged in fixed column, are arranged in lifting column for storing high pressure gas
Receive air cavity, positioned at receive air cavity one end switch bolt, with the hinged regulation handle of switch bolt and positioned at receiving the of the air cavity other end
One piston, first piston include first piston head and First piston bar, first piston head with receive air cavity side wall and be close to, receive air cavity
Side is provided with the air flue for connecting first piston head upper and lower ends cavity, and First piston bar setting is corresponded on the bottom surface of cavity
There is bearing, when specifically used, construction personnel first stands on job platform, and regulation handle is pulled up, and switch bolt moves down, and is connected to gas
Road, first piston head upper surface air pressure useful effect power are consistently greater than first piston head lower surface useful effect power and lifting column
The sum of load-carrying, first piston head stress, which moves down, drives First piston bar to be against on bearing, in the out-of-balance force of high pressure gas
Under the action of, lifting column is inconjunction with job platform and construction personnel and slowly rises to suitable distance, and then construction personnel will
Regulation handle resets, and drives switch bolt to reset and closes, gas intracavity gas of receiving does not circulate, and whole device is fixed, construction personnel
Falling apparatus can be provided in cavity with the expansion upkeep operation of safety and steady, falling apparatus includes rotary electric machine, cone tooth
Wheel group and vacuum chamber, rotary electric machine are electrically connected with operator, and vacuum chamber is provided in vacuum chamber, the second work is provided in vacuum chamber
Plug, second piston include the second piston head being close to vacuum chamber side wall and second piston bar, and second piston bar is lived far from second
One end of chock plug extends to outside vacuum chamber and is provided with thread segment, and the one end of vacuum chamber far from second piston bar is provided with ventilative
Hole, bevel gear set include first bevel gear and the second bevel gear that coordinates with first bevel gear, at the center of first bevel gear with
The output axis connection of rotary electric machine is threadedly coupled at the center of second bevel gear with thread segment, receives air cavity far from air flue side
It is provided with gas outlet on wall, is connected by elastic tracheae between gas outlet and air hole, under original state, second piston head is close to
It is in vacuum state at air hole, in vacuum chamber, the rotating forward, reversion or closing of rotary electric machine can be controlled by controlling operator,
When lifting column rises, elastic tracheae has the elasticity of high intensity, as lifting column is increased and stretched together, when construction personnel makees
After industry, the construction personnel to stand on job platform pulls up regulation handle so that switch bolt is opened, and stand on the ground another
One staff makes rotary electric machine start by operator, and rotary electric machine, which rotates forward, drives first bevel gear rotation, the first cone tooth
Wheel rotation drives matched second bevel gear to rotate simultaneously, and second bevel gear rotation drives be threadedly coupled therewith second to live
Stopper rod is moved toward far from air hole direction, and second piston head is mobile simultaneously so that the height of first piston head upper end received in air cavity
Body of calming the anger is inhaled by elastic tracheae in vacuum chamber so that air pressure useful effect power in first piston head upper surface is less than first and lives
The sum of the load-carrying of chock plug lower surface useful effect power and lifting column, then under the effect of the out-of-balance force of air pressure, lifting column drives
Construction personnel slowly declines, and when dropping to proper height, the staff on ground closes rotary electric machine by operator, together
When job platform on construction personnel regulation handle is resetted, whole device is stablized, and construction personnel leaves job platform；Next time is made
When industry, after turning on the switch bolt, need to start rotary electric machine reversion so that the indoor high pressure gas of vacuum, which reenters, receives air cavity
After interior, lifting column could normally rise.
Preferably, the both sides of the job platform are provided with fence.The both sides of job platform are provided with fence, are convenient for
Construction personnel fastens the safety belt, and prevents falling from high altitude, increases safety.
Preferably, being provided with skid resistant course on the job platform.It is provided with skid resistant course on job platform, prevents from constructing
Personnel's slideway when constructing on job platform, increases safety when construction.
Preferably, the bottom on the chassis is provided with Universal wheel.The bottom on chassis is provided with Universal wheel, convenient
Construction personnel pushes whole device.
Preferably, the brake gear for fixing Universal wheel is provided on the chassis, the brake gear
It is electrically connected with operator.The brake gear for fixing Universal wheel is provided on chassis, brake gear is electrically connected with operator,
Being turned on and off for brake gear can be controlled by controlling operator, when construction personnel constructs on job platform, brake
Device starts, and Universal wheel can not move, and increase safety of the construction personnel in operation.
Preferably, the side of the fixed column is provided with handle.The side of fixed column is provided with handle, passes through handle
Staff is facilitated to move whole device.
Preferably, the side of the fixed column is provided with step surface.The side of fixed column is provided with step surface, convenient
Construction personnel is entered by step surface on job platform.
Preferably, being provided with valve at the gas outlet, the valve is electrically connected with operator.It is set at gas outlet
Be equipped with valve, valve is electrically connected with operator, by control operator being turned on and off with control valve, when vacuum chamber and
When the gas in air cavity of receiving needs circulation, valve is just opened, the safety of device is increased.
Therefore, a kind of 220kV disconnecting switch climbing operation platform of the invention has following advantages：Safety of the present invention
Height is equipped with fence and skid resistant course, can prevent personal height from falling, the lifting gear stability of design is good, when rising or falling
Safety and stability is not easy to shake, and the Universal wheel and handle of setting make mobile very convenient, time saving and energy saving, the practicability of the present invention
By force, small volume of the present invention is restricted smaller, flexible facility, it is only necessary to which a people is on ground when equipment comparatively dense in space for maintenance
Upper assistance, another people carry out operation of ascending a height on job platform.
Description of the drawings
Attached drawing 1 is a kind of structural representation front view of the present invention.
Attached drawing 2 is a kind of structural representation left view of the present invention.
Attached drawing 3 is the structural representation cutaway view Amplified image at A in attached drawing 1.
It illustrates：1- fences, 2- skid resistant courses, 3- job platforms, 4- handles, the chassis 5-, 6- Universal wheels, 7- liftings
Column, 8- regulation handles, 9- operators, 10- fixed columns, 11- step surfaces, 12- brake gears, 13- valves, 14- cavitys, 15- are true
Cavity, 16- second bevel gears, 17- first bevel gears, 18- rotary electric machines, 19- second pistons, 20- vacuum chambers, 21- air holes,
22- elasticity tracheaes, 23- switch bolt, the gas outlets 24-, and 25- receives air cavity, 26- air flues, 27- first pistons, 28- bearings.
Specific implementation mode
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.
Embodiment 1：
As shown in Figure 1, 2, 3, a kind of 220kV disconnecting switch climbing operation platform, including set gradually from lower to upper chassis 5,
The side of fixed column 10, lifting column 7 and job platform 3, fixed column is provided with operator 9, can be operated entirely by operator
The both sides of device, job platform are provided with fence 1, fasten the safety belt convenient for construction personnel, prevent falling from high altitude, increase safety
Property, skid resistant course 2 is provided on job platform, prevents construction personnel's slideway when constructing on job platform, when increasing construction
The bottom of safety, chassis is provided with Universal wheel 6, facilitates construction personnel to push whole device, is provided on chassis for solid
Determine the brake gear 12 of Universal wheel, brake gear is electrically connected with operator, and brake gear can be controlled by controlling operator
Be turned on and off, when construction personnel constructs on job platform, brake gear starts, and Universal wheel can not move, and increases
Safety of the construction personnel in operation, the side of fixed column are provided with handle 4, facilitate staff to move by handle whole
The side of a device, fixed column is provided with step surface 11, and construction personnel is facilitated to be entered on job platform by step surface, lifting
Lifting gear is set between column and fixed column, and lifting gear can realize lifting of the lifting column in fixed column, lifting gear packet
Include the cavity 14 being arranged in fixed column, be arranged in lifting column for store high pressure gas receive air cavity 25, positioned at receiving air cavity
The switch bolt 23 of one end, with the hinged regulation handle 8 of switch bolt and positioned at receiving the first piston 27 of the air cavity other end, first piston
Including first piston head and First piston bar, first piston head with receive air cavity side wall and be close to, receiving the side of air cavity is provided with and is used for
The air flue 26 of first piston head upper and lower ends cavity is connected, corresponding to First piston bar on the bottom surface of cavity is provided with bearing 28, has
Body pulls up regulation handle in use, construction personnel first stands on job platform, and switch bolt moves down, and is connected to air flue, first piston
Head upper surface air pressure useful effect power is consistently greater than the sum of the load-carrying of first piston head lower surface useful effect power and lifting column, the
One piston head stress, which moves down, drives First piston bar to be against on bearing, under the action of the out-of-balance force of high pressure gas, rises
Drop column is inconjunction with job platform and construction personnel and slowly rises to suitable distance, and then construction personnel answers regulation handle
Position drives switch bolt to reset and closes, and gas intracavity gas of receiving does not circulate, and whole device is fixed, and construction personnel can put down safely
Steady expansion upkeep operation, is provided with falling apparatus in cavity, and falling apparatus includes rotary electric machine 18, bevel gear set and true
Empty room 20, rotary electric machine is electrically connected with operator, and vacuum chamber 15 is provided in vacuum chamber, second piston is provided in vacuum chamber
19, second piston includes the second piston head being close to vacuum chamber side wall and second piston bar, and second piston bar is lived far from second
One end of chock plug extends to outside vacuum chamber and is provided with thread segment, and the one end of vacuum chamber far from second piston bar is provided with air hole
21, bevel gear set includes first bevel gear 17 and the second bevel gear coordinated with first bevel gear 16, the center of first bevel gear
Locate the output axis connection with rotary electric machine, is threadedly coupled with thread segment at the center of second bevel gear, receives air cavity far from air flue one
It is provided with gas outlet 24 on the wall of side, is connected by elastic tracheae 22 between gas outlet and air hole, under original state, second lives
It is in vacuum state at chock plug fitted and breathable hole, in vacuum chamber, the rotating forward of rotary electric machine, reversion can be controlled by controlling operator
Or close, when lifting column rises, elasticity of the elastic tracheae with high intensity, as lifting column is increased and stretched together, when applying
After worker person's operation, the construction personnel to stand on job platform pulls up regulation handle so that switch bolt is opened, and is stood on ground
Another one staff on face makes rotary electric machine start by operator, and rotary electric machine, which rotates forward, drives first bevel gear rotation,
First bevel gear rotation drives matched second bevel gear to rotate simultaneously, and second bevel gear rotation drives to be threadedly coupled therewith
Second piston bar moved toward far from air hole direction, second piston head moves simultaneously so that receives gas in first piston head upper end
The high pressure gas of intracavitary is inhaled by elastic tracheae in vacuum chamber so that air pressure useful effect power in first piston head upper surface is small
In the sum of the load-carrying of first piston head lower surface useful effect power and lifting column, then under the effect of the out-of-balance force of air pressure, rise
Drop column drives construction personnel slowly to decline, and when dropping to proper height, the staff on ground is closed by operator to be turned
Dynamic motor, while the construction personnel on job platform resets regulation handle, whole device is stablized, and construction personnel leaves operation horizontal
Platform；When lower subjob, after turning on the switch bolt, need to start rotary electric machine reversion so that the indoor high pressure gas of vacuum is again
Into after receiving in air cavity, lifting column could normally rise；Valve 13 is provided at gas outlet, valve is electrically connected with operator, is led to
Cross control operator being turned on and off with control valve just beaten when vacuum chamber and the gas received in air cavity need circulation
Valve opening door increases the safety of device.
It should be understood that being somebody's turn to do, examples are only for illustrating the present invention and not for limiting the scope of the present invention.In addition, it should also be understood that,
After having read the content of the invention lectured, those skilled in the art can make various modifications or changes to the present invention, these etc.
Valence form is also fallen within the scope of the appended claims of the present application.
Claims (8)
1. a kind of 220kV disconnecting switch climbing operation platform, which is characterized in that including the chassis, solid set gradually from lower to upper
The side of fixed column, lifting column and job platform, the fixed column is provided with operator, between the lifting column and fixed column
Lifting gear is set, and the lifting gear includes the cavity being arranged in fixed column, is arranged in lifting column for storing height
Calm the anger body receive air cavity, positioned at receiving the switch bolt, another with the hinged regulation handle of switch bolt and positioned at air cavity is received of air cavity one end
The first piston at end, the first piston include first piston head and First piston bar, the first piston head and gas of receiving
Chamber side wall is close to, and the described side for receiving air cavity is provided with the air flue for connecting first piston head upper and lower ends cavity, described
Cavity bottom surface on correspond to First piston bar and be provided with bearing, when switch bolt is opened, the upper surface air pressure of first piston head is effective
Active force is consistently greater than the sum of the load-carrying of first piston head lower surface useful effect power and lifting column, is provided in the cavity
Falling apparatus, the falling apparatus include rotary electric machine, bevel gear set and vacuum chamber, the rotary electric machine and operation
Device is electrically connected, and vacuum chamber is provided in the vacuum chamber, and second piston is provided in the vacuum chamber, and described second lives
Plug includes the second piston head being close to vacuum chamber side wall and second piston bar, and the second piston bar is far from second piston head
One end extend to that vacuum chamber is outer and be provided with thread segment, and the one end of the vacuum chamber far from second piston bar is provided with ventilative
Hole, the bevel gear set include first bevel gear and the second bevel gear that coordinates with first bevel gear, the described first cone tooth
At the center of wheel and the output axis connection of rotary electric machine, connect with the thread segment screw thread at the center of the second bevel gear
It connects, described receive is provided with gas outlet on wall of the air cavity far from air flue side, passes through bullet between the gas outlet and air hole
Property tracheae connection.
2. a kind of 220kV disconnecting switch climbing operation platform according to claim 1, which is characterized in that the operation
The both sides of platform are provided with fence.
3. a kind of 220kV disconnecting switch climbing operation platform according to claim 1, which is characterized in that the operation
Skid resistant course is provided on platform.
4. a kind of 220kV disconnecting switch climbing operation platform according to claim 1 or 2 or 3, which is characterized in that described
The bottom on chassis be provided with Universal wheel.
5. a kind of 220kV disconnecting switch climbing operation platform according to claim 4, which is characterized in that the chassis
On be provided with brake gear for fixing Universal wheel, the brake gear is electrically connected with operator.
6. a kind of 220kV disconnecting switch climbing operation platform according to claim 5, which is characterized in that the fixation
The side of column is provided with handle.
7. a kind of 220kV disconnecting switch climbing operation platform according to claim 1 or 2 or 3, which is characterized in that described
The side of fixed column be provided with step surface.
8. a kind of 220kV disconnecting switch climbing operation platform according to claim 1 or 2 or 3, which is characterized in that described
Gas outlet at be provided with valve, the valve is electrically connected with operator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711398152.1A CN108275625A (en) | 2017-12-21 | 2017-12-21 | A kind of 220kV disconnecting switch climbing operation platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711398152.1A CN108275625A (en) | 2017-12-21 | 2017-12-21 | A kind of 220kV disconnecting switch climbing operation platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108275625A true CN108275625A (en) | 2018-07-13 |
Family
ID=62802060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711398152.1A Pending CN108275625A (en) | 2017-12-21 | 2017-12-21 | A kind of 220kV disconnecting switch climbing operation platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108275625A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112376944A (en) * | 2020-11-13 | 2021-02-19 | 株洲天桥舜臣选煤机械有限责任公司 | Temporary support for pre-splicing steel structural member |
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| CN205045755U (en) * | 2015-10-27 | 2016-02-24 | 国网山东桓台县供电公司 | Distribution transformer handling device |
| CN205257939U (en) * | 2016-01-07 | 2016-05-25 | 刘亭婷 | Novel electric power overhaul ladder |
| CN105936489A (en) * | 2016-05-20 | 2016-09-14 | 国网江苏省电力公司兴化市供电公司 | Lifting electrician operating platform |
| CN205603177U (en) * | 2016-03-26 | 2016-09-28 | 重庆工业职业技术学院 | Portable electric power maintains device of ascending a height |
| CN205933128U (en) * | 2016-08-24 | 2017-02-08 | 国网安徽省电力公司检修公司 | Portable pneumatic type plug -in strip goes up and down to overhaul platform |
-
2017
- 2017-12-21 CN CN201711398152.1A patent/CN108275625A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205045755U (en) * | 2015-10-27 | 2016-02-24 | 国网山东桓台县供电公司 | Distribution transformer handling device |
| CN205257939U (en) * | 2016-01-07 | 2016-05-25 | 刘亭婷 | Novel electric power overhaul ladder |
| CN205603177U (en) * | 2016-03-26 | 2016-09-28 | 重庆工业职业技术学院 | Portable electric power maintains device of ascending a height |
| CN105936489A (en) * | 2016-05-20 | 2016-09-14 | 国网江苏省电力公司兴化市供电公司 | Lifting electrician operating platform |
| CN205933128U (en) * | 2016-08-24 | 2017-02-08 | 国网安徽省电力公司检修公司 | Portable pneumatic type plug -in strip goes up and down to overhaul platform |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112376944A (en) * | 2020-11-13 | 2021-02-19 | 株洲天桥舜臣选煤机械有限责任公司 | Temporary support for pre-splicing steel structural member |
| CN112376944B (en) * | 2020-11-13 | 2022-08-16 | 青岛嘉和鑫钢铁有限公司 | Temporary support for pre-splicing steel structural member |
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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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180713 |