CN109372523A - Rotary bracket is used in a kind of construction of tunnel blasting excavation - Google Patents
Rotary bracket is used in a kind of construction of tunnel blasting excavation Download PDFInfo
- Publication number
- CN109372523A CN109372523A CN201811522702.0A CN201811522702A CN109372523A CN 109372523 A CN109372523 A CN 109372523A CN 201811522702 A CN201811522702 A CN 201811522702A CN 109372523 A CN109372523 A CN 109372523A
- Authority
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- China
- Prior art keywords
- plate
- fixed
- rotor plate
- blasting excavation
- support frame
- 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
- 238000010276 construction Methods 0.000 title claims abstract description 28
- 238000009412 basement excavation Methods 0.000 title claims abstract description 17
- 238000005422 blasting Methods 0.000 title claims abstract description 17
- 230000003028 elevating effect Effects 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 230000000452 restraining effect Effects 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 241000237858 Gastropoda Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/006—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries by making use of blasting methods
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
- E21D9/122—Working or loading platforms
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of tunnel blasting excavation construction rotary brackets, it is related to tunnel construction technical field, including bottom plate, bottom base plate rotary type is equipped with traveling wheel, it is fixedly installed with support frame on bottom plate, stepper motor is fixedly installed on lifter plate, the worm gear of matched connection is connected on worm screw, the steering shaft being vertically arranged coaxially is fixed on worm gear, steering shaft upper end is fixed on rotor plate bottom center；The present invention realizes driving drive shaft forward or reverse by the positive and negative rotation of clockwise and anticlockwise motor, and then realize that the adjusting of height and position is realized in the lifting of lifter plate, the rotor plate and expansion board being used to support obtain lift adjustment, realize that the rotation for carrying out angle to rotor plate is adjusted by stepper motor driving, convenient for the comprehensive carry out constructing tunnel operation of constructing tunnel personnel's energy on rotor plate, and expansion board can relatively rotate plate and carry out extension extension, so that the active operation region of construction personnel is expanded, it is more favorable for constructing operation.
Description
Technical field
The present invention relates to tunnel construction technical field, rotary bracket is used in specifically a kind of tunnel blasting excavation construction.
Background technique
Tunnel is to be built in underground or underwater or in massif, places an iron railway or builds highway and is current for motor vehicles
Building.Mountain tunnel, submerged tunnel and city tunnel three categories can be divided into according to its position.To shorten distance and avoiding
Steep gradient and passed through under the mountain ridge or hills be known as mountain tunnel；For river crossing or straits under river or seabed passes through
Referred to as submerged tunnel；It needs to be known as city tunnel what Urban Underground passed through to adapt to railway by metropolitan.It is these three types of
Building in tunnel most is mountain tunnel.
In tunnel blasting excavation work progress, need through bracket system progress constructing operation, but current bracket
Structure is excessively fixed, not can be carried out the adjusting of multi-angle when in use, causes the decline of constructing tunnel efficiency, be unfavorable for constructing into
The propulsion of degree, for this purpose, now providing a kind of tunnel blasting excavation construction rotary bracket, to solve the above technical problems.
Summary of the invention
The purpose of the present invention is to provide a kind of tunnel blasting excavation construction rotary brackets, to solve above-mentioned background technique
The problem of middle proposition.
To achieve the above object, the invention provides the following technical scheme:
A kind of tunnel blasting excavation construction rotary bracket, including bottom plate, bottom base plate rotary type are equipped with traveling wheel, consolidate on bottom plate
Dingan County is equipped with support frame, and vertical sliding is equipped with horizontally disposed lifter plate on support frame, and limit is fixedly installed on lifter plate
Ring flat-plate limits rotary type on ring flat-plate and is equipped with rotor plate, is fixedly installed with stepper motor on lifter plate, the output shaft of stepper motor is same
Axis is fixed with horizontally disposed worm screw, and the worm gear of matched connection is connected on worm screw, is coaxially fixed on worm gear and sets vertically
The steering shaft set, steering shaft upper end are fixed on rotor plate bottom center.
As an improvement of the present invention: laterally offering sliding chamber on the rotor plate, slide intracavitary be slidably fitted with
Expansion board, expansion board bottom are laterally fixed with spur rack, are embedded in lifter plate and are fixed with driving motor, the output shaft of driving motor
Coaxially it is fixed with the transmission gear engaged with spur rack.
As an improvement of the present invention: offering symmetrically arranged two guide grooves in the rotor plate, be oriented to
Sliding is embedded the clamping block for being equipped with and being fixed on expansion board side wall in slot.
As an improvement of the present invention: support frame as described above upper end is fixedly installed with top plate, is articulated on top plate logical
Cross the elevating screw for being threadedly coupled and running through lifter plate.
As an improvement of the present invention: be fixed with clockwise and anticlockwise motor on support frame as described above, clockwise and anticlockwise motor it is defeated
Shaft is coaxially fixed with the drive shaft extended in support frame, is arranged in drive shaft and is fixed with bevel gear I, engages on bevel gear I
It is equipped with and the co-axially fixed bevel gear II of elevating screw.
As an improvement of the present invention: support frame as described above upper end is fixedly installed with top plate, top plate and lifter plate it
Between be fixedly installed with reset spring.
As an improvement of the present invention: the limit ring flat-plate inner sidewall circumferential direction offers annular groove, in annular groove
It is embedded and the annular cage plate for being fixed on rotor plate side wall is installed.
As an improvement of the present invention: being welded with reinforcement between the steering shaft side wall and rotor plate bottom surface
Muscle.
Compared with prior art, the beneficial effects of the present invention are:
The present invention realizes driving drive shaft forward or reverse by the positive and negative rotation of clockwise and anticlockwise motor, and then realizes the liter of lifter plate
Drop realizes the adjusting of height and position, and the rotor plate and expansion board being used to support obtain lift adjustment, is driven by stepper motor real
The rotation for now carrying out angle to rotor plate is adjusted, convenient for the comprehensive carry out constructing tunnel of constructing tunnel personnel's energy on rotor plate
Operation, and expansion board can relatively rotate plate and carry out extension extension, so that the active operation region of construction personnel is expanded, more
Conducive to constructing operation.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the enlarged diagram in the portion A in Fig. 1；
Fig. 3 is the schematic top plan view of rotor plate in the present invention；
Fig. 4 is the schematic top plan view of worm and worm wheel connection in the present invention.
In figure: 1- bottom plate, 2- bevel gear I, 3- support frame, 4- elevating screw, 5- annular groove, 6- annular cage plate, 7- rotation
Plate, 8- sliding chamber, 9- worm screw, 10- expansion board, 11- top plate, 12- reset spring, 13- clockwise and anticlockwise motor, 14- traveling wheel, 15- liter
Plate, 16- drive shaft, 17- worm gear, 18- bevel gear II, 19- limit ring flat-plate, 20- steering shaft, 21- reinforcing rib, 22- stepping electricity drop
Machine, 23- spur rack, 24- transmission gear, 25- driving shaft, 26- guide groove, 27- clamping block.
Specific embodiment
The technical solution of the patent is explained in further detail With reference to embodiment:
Embodiment 1
Fig. 1-4, a kind of tunnel blasting excavation construction rotary bracket, including bottom plate 1,1 lower rotation formula of bottom plate is please referred to be equipped with
Traveling wheel 14, the traveling wheel 14 of setting, which can facilitate, to carry out the present apparatus to be moved to construction area in tunnel, is fixedly mounted on bottom plate 1
There is support frame 3, vertical sliding is equipped with horizontally disposed lifter plate 15 on support frame 3, is fixedly installed with limit on lifter plate 15
Ring flat-plate 19 limits rotary type on ring flat-plate 19 and is equipped with rotor plate 7,
Lifter plate 15 can carry out the adjusting of upper and lower position, convenient for going up and down to rotor plate 7, to realize required construction of constructing
Highly.Stepper motor 22 is fixedly installed on lifter plate 15, the output shaft of stepper motor 22 is coaxially fixed with horizontally disposed snail
Bar 9 is connected with the worm gear 17 of matched connection on worm screw 9, is coaxially fixed with the steering shaft 20 being vertically arranged on worm gear 17, turns
7 bottom center of rotor plate is fixed on to 20 upper end of axis.
Stepper motor 22 can drive worm screw 9 to rotate, and worm screw 9 can drive 20 turns of steering shaft by matched worm gear 17
It is dynamic, and then realize the rotation of rotor plate 7, so that the angle of constructing operation is adjusted, construction personnel is facilitated to carry out constructing operation.
Further, sliding chamber 8 is laterally offered on rotor plate 7, is slidably fitted with expansion board 10, expansion board 10 in sliding chamber 8
Bottom is laterally fixed with spur rack 23, is embedded in lifter plate 15 and is fixed with driving motor 25, and the output shaft of driving motor 25 is coaxial
It is fixed with the transmission gear 24 engaged with spur rack 23.Driving motor 25 can drive transmission gear 24 to rotate, and transmission gear 24 is logical
Cross the spur rack 23 that is engaged with drive expansion board 10 along sliding chamber 8 carry out it is lateral move so that the work model of construction personnel
It encloses and is expanded, convenient for preferably carrying out constructing operation.
Further, symmetrically arranged two guide grooves 26 are offered in rotor plate 7, sliding is embedded installation in guide groove 26
There is the clamping block 27 for being fixed on 10 side wall of expansion board.During expansion board 10 carries out transverse shifting extension, 27 edge of clamping block
Guide groove 26 slided, play the role of guide and limit, improve expansion board 10 stretching, extension stationarity, improve expansion board 10
The safety of staff when mobile thereon.
Embodiment 2
On the basis of embodiment 1, it in addition, 3 upper end of support frame is fixedly installed with top plate 11, is articulated on top plate 11 and passes through screw thread
Connection runs through the elevating screw 4 of lifter plate 15, is fixed with clockwise and anticlockwise motor 13, the output shaft of clockwise and anticlockwise motor 13 on support frame 3
It coaxially is fixed with the drive shaft 16 extended in support frame 3, is arranged in drive shaft 16 and is fixed with bevel gear I2, nibbled on bevel gear I2
Conjunction is equipped with and the co-axially fixed bevel gear II18 of elevating screw 4.
Clockwise and anticlockwise motor 13 can drive drive shaft 16 to carry out positive and negative rotation, and drive shaft 16 drives bevel gear I2 rotation thereon,
Bevel gear I2 is rotated by the elevating screw 4 of co-axial fixation, and then realizes that 7 height of rotor plate is realized in the lifting of lifter plate 15
Adjusting, convenient for construction personnel at various height region carry out construction operation.
Further, 3 upper end of support frame is fixedly installed with top plate 11, is fixedly installed between top plate 11 and lifter plate 15 multiple
Position spring 12, the reset spring 12 of setting deformation elongation and compression in 15 lifting process of lifter plate are played buffering well and are subtracted
Shake effect, improves the stability of 7 height adjustment of rotor plate.
Further, limit 19 inner sidewall circumferential direction of ring flat-plate offers annular groove 5, is embedded to be equipped in annular groove 5 and is fixed on
The annular cage plate 6 of 7 side wall of rotor plate, in the rotation process of rotor plate 7, annular cage plate 6 is slided along annular groove 5, ensure that
The smooth rotation of rotor plate 7.
Further, reinforcing rib 21, the reinforcing rib of setting are welded between 7 bottom surface of 20 side wall of steering shaft and rotor plate
21 can play the reinforcement effect to rotor plate 7 and the connection of steering shaft 20, improve the support construction intensity of rotor plate 7.
In conclusion the bottom plate 1, support frame 3 and clockwise and anticlockwise motor 13 etc. in the present apparatus are the direct of prior art means
Using, and the specific knot of the components such as rotor plate 7, expansion board 10, lifter plate 15, elevating screw 4, bevel gear II18 and bevel gear I2
Structure and connection relationship are the innovative point of invention；The present invention is realizing driving drive shaft 16 just by the positive and negative rotation of clockwise and anticlockwise motor 13
Turn or invert, and then realizes that the adjusting of height and position, the rotor plate 7 being used to support and expansion board 10 are realized in the lifting of lifter plate 15
Lift adjustment is obtained, realizes that the rotation for carrying out angle to rotor plate 7 is adjusted by the driving of stepper motor 22, convenient on rotor plate 7
Constructing tunnel personnel can be comprehensive carry out constructing tunnel operation, and expansion board 10 can relatively rotate plate 7 and carry out extension extension,
So that the active operation region of construction personnel is expanded, it is more favorable for constructing operation.
It should be strongly noted that although this specification is described in terms of embodiments, but not each embodiment
It only contains an independent technical solution, this description of the specification is merely for the sake of clarity, those skilled in the art
It should consider the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms art technology
The other embodiments that personnel are understood that, the preferred embodiment of the present invention, describes above described embodiment only expresses
More specific and detailed, but it cannot be understood as limitations on the scope of the patent of the present invention.It should be pointed out that for this
For the those of ordinary skill in field, without departing from the inventive concept of the premise, several deformations can also be made, improves and replaces
In generation, these are all within the scope of protection of the present invention.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (8)
1. a kind of tunnel blasting excavation construction rotary bracket, including bottom plate (1), bottom plate (1) lower rotation formula are equipped with traveling wheel
(14), support frame (3) are fixedly installed on bottom plate (1), which is characterized in that vertical sliding is equipped with water on support frame as described above (3)
The lifter plate (15) of setting is put down, restraining position ring block plate (19) are fixedly mounted on lifter plate (15), rotary type is set in limit ring flat-plate (19)
Have rotor plate (7), be fixedly installed on lifter plate (15) stepper motor (22), the output shaft of stepper motor (22) is coaxially fixed with
Horizontally disposed worm screw (9), the worm gear (17) of matched connection is connected on worm screw (9), and worm gear is coaxially fixed on (17)
The steering shaft (20) being vertically arranged, steering shaft (20) upper end are fixed on rotor plate (7) bottom center.
2. tunnel blasting excavation construction rotary bracket according to claim 1, which is characterized in that the rotor plate (7)
Upper transverse direction offers sliding chamber (8), is slidably fitted with expansion board (10) in sliding chamber (8), expansion board (10) bottom is laterally fixed with directly
Rack gear (23) is embedded in lifter plate (15) and is fixed with driving motor (25), the output shaft of driving motor (25) be coaxially fixed with
The transmission gear (24) of spur rack (23) engagement.
3. tunnel blasting excavation construction rotary bracket according to claim 1 or 2, which is characterized in that the rotor plate
(7) symmetrically arranged two guide grooves (26) are offered in, sliding, which is embedded to be equipped with, in guide groove (26) is fixed on expansion board
(10) clamping block (27) of side wall.
4. tunnel blasting excavation construction rotary bracket according to claim 1, which is characterized in that support frame as described above (3)
Upper end is fixedly installed with top plate (11), and top plate is articulated with the elevating screw being connected through a screw thread through lifter plate (15) on (11)
(4).
5. tunnel blasting excavation construction rotary bracket according to claim 1 or 4, which is characterized in that support frame as described above
(3) it is fixed on clockwise and anticlockwise motor (13), the output shaft of clockwise and anticlockwise motor (13), which is coaxially fixed with, to be extended in support frame (3)
Drive shaft (16) is arranged in drive shaft (16) and is fixed with bevel gear I(2), bevel gear I(2) on engagement be equipped with and elevating screw
(4) co-axially fixed bevel gear II(18).
6. tunnel blasting excavation construction rotary bracket according to claim 1, which is characterized in that support frame as described above (3)
Upper end is fixedly installed with top plate (11), and reset spring (12) are fixedly installed between top plate (11) and lifter plate (15).
7. tunnel blasting excavation construction rotary bracket according to claim 1, which is characterized in that the limit ring flat-plate
(19) inner sidewall circumferential direction offers annular groove (5), is embedded the annular for being equipped with and being fixed on rotor plate (7) side wall in annular groove (5)
Cage plate (6).
8. tunnel blasting excavation construction rotary bracket according to claim 1, which is characterized in that the steering shaft (20)
Reinforcing rib (21) are welded between side wall and rotor plate (7) bottom surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811522702.0A CN109372523A (en) | 2018-12-13 | 2018-12-13 | Rotary bracket is used in a kind of construction of tunnel blasting excavation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811522702.0A CN109372523A (en) | 2018-12-13 | 2018-12-13 | Rotary bracket is used in a kind of construction of tunnel blasting excavation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109372523A true CN109372523A (en) | 2019-02-22 |
Family
ID=65373560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811522702.0A Pending CN109372523A (en) | 2018-12-13 | 2018-12-13 | Rotary bracket is used in a kind of construction of tunnel blasting excavation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109372523A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110426944A (en) * | 2019-08-12 | 2019-11-08 | 李想 | A kind of electronic watch rear cover screws mounting device automatically |
| CN113644735A (en) * | 2021-06-28 | 2021-11-12 | 武汉东湖学院 | Patrol equipment applying 5G network communication |
| CN113818903A (en) * | 2021-09-22 | 2021-12-21 | 鲍怡 | Quick positioner is connected to prefabricated box culvert structure that shield tunnel used |
| CN114858018A (en) * | 2022-05-27 | 2022-08-05 | 侨智建设有限公司 | A damping device that is used for tunnel blasting of complicated high stress country rock area |
| CN115924814A (en) * | 2023-03-14 | 2023-04-07 | 射阳县高新科技创业园有限公司 | Intelligent elevating gear of municipal administration auxiliary facilities construction usefulness |
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| CN204673575U (en) * | 2015-05-29 | 2015-09-30 | 江西洪都航空工业集团有限责任公司 | A kind of flexible auxiliary working platform |
| CN204783022U (en) * | 2015-07-07 | 2015-11-18 | 嘉兴职业技术学院 | Excavation platform truck of saturation soil in tunnel |
| CN107269298A (en) * | 2017-07-24 | 2017-10-20 | 国家电网公司 | A kind of tunnel construction trolley |
| CN206942771U (en) * | 2017-04-13 | 2018-01-30 | 杨涛 | Excavate stand |
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| CN207735932U (en) * | 2018-01-23 | 2018-08-17 | 上海宇松工控软件开发有限公司 | A kind of mechanical processing Universal rotary platform |
| CN108442944A (en) * | 2018-04-11 | 2018-08-24 | 黑龙江省龙建路桥第三工程有限公司 | It is a kind of to automatically move trolley and forward method with vertically and horizontally turning function |
| CN108658015A (en) * | 2018-04-28 | 2018-10-16 | 广东电网有限责任公司 | Electric power safety workbench |
| CN108861371A (en) * | 2018-05-26 | 2018-11-23 | 马鞍山荣马传动机械有限公司 | A kind of high speed driving unit |
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2018
- 2018-12-13 CN CN201811522702.0A patent/CN109372523A/en active Pending
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| CN2433356Y (en) * | 2000-07-07 | 2001-06-06 | 武汉江岸车辆厂 | Expansion lifting combination platform |
| CN204607506U (en) * | 2015-05-19 | 2015-09-02 | 河北工程大学 | A kind of simple type demolition blasting companion ladder |
| CN204673575U (en) * | 2015-05-29 | 2015-09-30 | 江西洪都航空工业集团有限责任公司 | A kind of flexible auxiliary working platform |
| CN204783022U (en) * | 2015-07-07 | 2015-11-18 | 嘉兴职业技术学院 | Excavation platform truck of saturation soil in tunnel |
| CN206942771U (en) * | 2017-04-13 | 2018-01-30 | 杨涛 | Excavate stand |
| CN107269298A (en) * | 2017-07-24 | 2017-10-20 | 国家电网公司 | A kind of tunnel construction trolley |
| CN207278275U (en) * | 2017-09-26 | 2018-04-27 | 中铁城建集团第三工程有限公司 | Assist type lifting trolley |
| CN207735932U (en) * | 2018-01-23 | 2018-08-17 | 上海宇松工控软件开发有限公司 | A kind of mechanical processing Universal rotary platform |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110426944A (en) * | 2019-08-12 | 2019-11-08 | 李想 | A kind of electronic watch rear cover screws mounting device automatically |
| CN113644735A (en) * | 2021-06-28 | 2021-11-12 | 武汉东湖学院 | Patrol equipment applying 5G network communication |
| CN113644735B (en) * | 2021-06-28 | 2023-09-29 | 武汉东湖学院 | Inspection equipment applying 5G network communication |
| CN113818903A (en) * | 2021-09-22 | 2021-12-21 | 鲍怡 | Quick positioner is connected to prefabricated box culvert structure that shield tunnel used |
| CN113818903B (en) * | 2021-09-22 | 2024-05-17 | 湖南瑞科勘测设计有限公司 | Prefabricated box culvert structure connection quick positioning device for shield tunnel |
| CN114858018A (en) * | 2022-05-27 | 2022-08-05 | 侨智建设有限公司 | A damping device that is used for tunnel blasting of complicated high stress country rock area |
| CN114858018B (en) * | 2022-05-27 | 2024-01-12 | 侨智建设有限公司 | Damping device for tunnel blasting of complex high-stress surrounding rock zone |
| CN115924814A (en) * | 2023-03-14 | 2023-04-07 | 射阳县高新科技创业园有限公司 | Intelligent elevating gear of municipal administration auxiliary facilities construction usefulness |
| CN115924814B (en) * | 2023-03-14 | 2023-09-29 | 射阳县高新科技创业园有限公司 | Intelligent elevating gear that municipal administration auxiliary facilities construction was used |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190222 |
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| RJ01 | Rejection of invention patent application after publication |