CN106703091A - Transmission tower differential settlement deviation correction device - Google Patents
Transmission tower differential settlement deviation correction device Download PDFInfo
- Publication number
- CN106703091A CN106703091A CN201710045083.XA CN201710045083A CN106703091A CN 106703091 A CN106703091 A CN 106703091A CN 201710045083 A CN201710045083 A CN 201710045083A CN 106703091 A CN106703091 A CN 106703091A
- Authority
- CN
- China
- Prior art keywords
- cylinder
- plate
- differential settlement
- tooth post
- fixedly connected
- 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.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D35/00—Straightening, lifting, or lowering of foundation structures or of constructions erected on foundations
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D35/00—Straightening, lifting, or lowering of foundation structures or of constructions erected on foundations
- E02D35/005—Lowering or lifting of foundation structures
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2200/00—Geometrical or physical properties
- E02D2200/16—Shapes
- E02D2200/1628—Shapes rectangular
- E02D2200/1635—Shapes rectangular made from single element
Abstract
The invention relates to a transmission tower differential settlement deviation correction device. An end plate (4) is arranged on the inner side of a barrel (17), the lower end of the barrel (17) is fixedly arranged on a reinforced concrete foundation (15), and a base plate hole (11) is formed in the lower end of the barrel (17); the upper end of a tooth column (5) is fixedly connected with the lower end of a tower foot joint plate (13), the lower portion of the tooth column (5) is inserted into the barrel (17) in a sliding manner, and racks (18) are arranged on the left side and the right side of the tooth column (5); and a pair of large gears (6) are arranged on the two sides of the tooth column (5), two small gears (7) are meshed with the two large gears (6), the large gears (6) and the small gears (7) are all connected to the barrel (17) rotationally, the large gears (6) are meshed with the racks (18), and at least one end of a small gear shaft (9) extends to the outer side of the barrel (17) and is fixedly connected with a handle or a driving wheel (10). The device is used for deviation correction adjustment on inclined tower feet after differential settlement happens.
Description
Technical field
The invention belongs to coal mine gob Transmission Line Design and protection field, it is related to electric power pylon to settle adjusting means,
Particularly a kind of electric power pylon differential settlement deviation correcting device.
Background technology
Due to the influence that coal mine underground is adopted, goaf overlying rock can occur the changing of the relative positions, deformation and be broken, so as to formed collapse
Fall band and fracture belt.Earth's surface can occur depression in the presence of this disturbance.And coal mine gob subsidence can cause region
The uneven subsidence of interior power transmission line iron tower foundation, can cause inclination, displacement and the deformation of shaft tower, and then can cause inside shaft tower
Stress changes, and this has seriously threatened line security.In the prior art to the inclination produced by electric power pylon differential settlement
There is no emergency processing equipment, it is impossible to which the tilt condition to electric power pylon is corrected in time.
The content of the invention
For the problem that above-mentioned prior art is present, the present invention provides a kind of electric power pylon differential settlement deviation correcting device,
The device can help to carry out height regulation to inclined steel tower column foot after power transmission line iron tower foundation occurs differential settlement,
So as to carry out correction adjustment to inclined steel tower, the safety and stability of the steel tower of run-off the straight because of sedimentation can be improved.
To achieve these goals, the present invention provides a kind of electric power pylon differential settlement deviation correcting device, including fixation sets
Reinforced concrete foundation on the ground, vertically arranged cylinder and tooth post are put, the cylinder inboard is at least in upper and lower part
An end plate for level is respectively fixedly installed, the lower end of cylinder is fixedly installed on the top of reinforced concrete foundation, under cylinder
End offers the backing plate hole of insertion fore-and-aft direction, and the upper end of the tooth post is fixedly connected with the lower end of steel tower column foot gusset plate, tooth
The bottom of post is longitudinally slidably plugged in the inside of cylinder, tooth post or so by being arranged on the hole in the middle part of upper and lower two end plates
Both sides are symmetrically provided with the upper continuous tooth bar for extending in longitudinal direction；In cylinder inboard, at least a pair of gear wheels are symmetrically disposed in tooth
The both sides of post, cylinder inboard is additionally provided with two little gears being meshed with two gear wheels respectively, the gear wheel, little gear
Be rotatably connected on cylinder by the Large Gear Shaft at its center, pinion shaft respectively, two gear wheels respectively with tooth post two
Side tooth bar engagement, in the rear and front end of the pinion shaft at least one end extend to the fore-and-aft direction of cylinder outside and with
Handle or driving wheel are fixedly connected.
In the technical scheme, cylinder upper end is fixedly connected with concrete foundation, is slidably arranged in the tooth post in cylinder
End is fixedly connected with steel tower column foot gusset plate, and the tooth bar in tooth post is engaged with gear wheel, and gear wheel is driven by little gear.This
Sample, when some column foot of steel tower is settled, is rotated by rotation pinion drive gear wheel, and then gear wheel can drive
Tooth post is moved up in the vertical, so that the lower end of tooth post is moved upwards, when the backing plate hole energy between tooth post and concrete foundation
It is enough accommodate lower setting height billet when, by billet insert in backing plate hole and be filled in concrete foundation and tooth post lower end it
Between, so as to reach the purpose of regulation tooth post height, so steel tower tower can be made by way of filling billet in tooth post lower end
The position of pin gusset plate raises, and then reaches the function of correction.Certainly, it is necessary in the gusset plate of each steel tower column foot when using
The device is provided between concrete foundation.The device can realize sedimentation regulation to column foot, and pass through the device
Steel tower after regulation has good stability.
Further, connection for convenience between tooth post and gusset plate, meanwhile, also for can guarantee that good load-bearing energy
Power, the tooth post is fixedly connected by being fixedly connected the column foot plate held thereon with the gusset plate.
Further, in order to ensure bonding strength, the lower end of the cylinder is fixed by loading plate with concrete foundation top
Connection.
As one kind preferably, the cross section of the cylinder is rectangle.
In order to easy to make, meanwhile, also for convenient for assembly, the cylinder is by the front and rear front vertical plate being oppositely arranged and rear vertical
Plate and the left plate that is oppositely arranged of left and right and right plate are formed by fixedly connecting, the lower end of the front vertical plate and back vertical plate with hold
Support plate is fixedly connected, and the bottom of front vertical plate and back vertical plate is opened in insertion before and after the backing plate hole.
As a kind of preferred, the billets being filled in the backing plate hole to be also used for including multiple.
Further, operate for convenience, the rear and front end of the pinion shaft extends respectively into the fore-and-aft direction of cylinder
Outside and it is fixedly connected with handle or driving wheel.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 be in Fig. 1 A-A to sectional view；
Fig. 3 is the sectional view of B-B direction in Fig. 1；
Fig. 4 is the structural representation of gear wheel in the present invention；
Fig. 5 is the structural representation of little gear in the present invention.
In figure：1st, front vertical plate, 2, back vertical plate, 3, left plate, 4, end plate, 5, tooth post, 6, gear wheel, 7, little gear, 8, big
Gear shaft, 9, pinion shaft, 10, handle or driving wheel, 11, backing plate hole, 12, billet, 13, column foot plate, 14, gusset plate, 15,
Reinforced concrete foundation, 16, right plate, 17, cylinder, 18, tooth bar, 19, loading plate.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.
As shown in Figures 1 to 5, the present invention provides a kind of electric power pylon differential settlement deviation correcting device, including is fixedly installed
Reinforced concrete foundation 15 on the ground, vertically arranged cylinder 17 and tooth post 5, the inboard of the cylinder 17 at least on top and
Bottom is respectively fixedly installed an end plate for level 4, and the lower end of cylinder 17 is fixedly installed on the top of reinforced concrete foundation 15,
The lower end of cylinder 17 offers the backing plate hole 11 of insertion fore-and-aft direction, upper end and the steel tower column foot gusset plate 13 of the tooth post 5
Lower end is fixedly connected, and the bottom of tooth post 5 is longitudinally slidably plugged in cylinder by being arranged on the hole at the middle part of upper and lower two end plates 4
The inside of body 17, the left and right sides of tooth post 5 is symmetrically provided with the upper continuous tooth bar 18 for extending in longitudinal direction；In the inboard of cylinder 17 at least
A pair of gear wheels 6 are symmetrically disposed in the both sides of tooth post 5, and the inboard of cylinder 17 is additionally provided with and is meshed with two gear wheels 6 respectively
Two little gears 7, the gear wheel 6, little gear 7 respectively by Large Gear Shaft 8, the pinion shaft 9 at its center rotationally
It is connected on cylinder 17, the tooth bar 18 of two gear wheels 6 respectively with the both sides of tooth post 5 is engaged, the rear and front end of the pinion shaft 9
In at least one end extend to cylinder 17 fore-and-aft direction outside and be fixedly connected with handle or driving wheel 10.The upper end of cylinder 17
It is fixedly connected with concrete foundation 1, the upper end of tooth post 5 being slidably arranged in cylinder 17 is fixed with steel tower column foot gusset plate 14 and connected
Connect, and the tooth bar 18 in tooth post 5 is engaged with gear wheel 6, gear wheel 6 is driven by little gear 7.So, when some tower of steel tower
Human hair combing waste life sedimentation when, rotated by the drive gear wheel 6 of rotation pinion 7, so gear wheel 6 can drive tooth post 5 in the vertical to
Upper movement, so that the lower end of tooth post 5 is moved upwards, divides into when the backing plate hole 11 between tooth post 5 and concrete foundation 1 can accommodate
When determining the billet 12 of height, by billet 12 insert in backing plate hole 11 and be filled in concrete foundation 1 and the lower end of tooth post 5 it
Between, so as to reach the purpose of the regulation height of tooth post 5, so iron can be made by way of filling billet 12 in the lower end of tooth post 5
The position of tower column foot gusset plate 14 raises, and then reaches the function of correction.Certainly, it is necessary in each steel tower column foot when using
The device is provided between gusset plate 14 and concrete foundation 1.The device can realize sedimentation regulation, and warp to column foot
The steel tower crossed after device regulation has good stability.
As shown in figures 1 and 3, connection for convenience between tooth post 5 and gusset plate 14, meanwhile, it is good also for can guarantee that
Good weight capacity, the tooth post 5 is fixedly connected by being fixedly connected the column foot plate 13 held thereon with the gusset plate 14.
As shown in figures 1 and 3, in order to ensure bonding strength, the lower end of the cylinder 17 passes through loading plate 19 and concrete
Basic 15 tops are fixedly connected.
As one kind preferably, the cross section of the cylinder 17 is rectangle.
As shown in figures 1 and 3, in order to easy to make, meanwhile, also for convenient for assembly, the cylinder 17 is by front and rear relative
The left plate 3 and right plate 16 that the front vertical plate 1 and back vertical plate 2 of setting and left and right are oppositely arranged are formed by fixedly connecting, it is described before
The lower end of riser 1 and back vertical plate 2 is fixedly connected with loading plate 19, and insertion front vertical plate 1 is opened in before and after the backing plate hole 11
With the bottom of back vertical plate 2.
As a kind of preferred, the billets 12 being filled in the backing plate hole 11 to be also used for including multiple.
Operate for convenience, the rear and front end of the pinion shaft 9 extends respectively into the outside of the fore-and-aft direction of cylinder 17
And be fixedly connected with handle or driving wheel 10.
When using, need to be affixed with electric power pylon column foot by device top (upper end of tooth post 5), by device bottom (cylinder 17
Lower end) it is affixed with concrete foundation 1.It is required to set the device under each column foot of steel tower.When basis occurs differential settlement
When, whole device meeting companion is settled.Now, by rotating handle or driving wheel 10, little gear 7 is made to rotate, then
Little gear 7 drives gear wheel 6 to rotate, and gear wheel 6 drives tooth post 5 to move upwards, and wherein handle or driving wheel 10 can be by machine
Tool equipment drives and is rotated to save manpower, can also make to be connected with stepper motor by belt on handle or driving wheel 10
Connect, with the convenient driving for realizing handle or driving wheel 10；Simultaneously, billet 12 is added in backing plate hole 11, to ensure not
After rotating handle or driving wheel 10 there is no downward motion in tooth post 5, and the height liter of the upper end of tooth post 5 is made by such mode
Height, and then the column foot of sinking can be made highly to raise, the purpose of correction is finally reached, the device can realize sedimentation regulation to column foot,
Can guarantee that the steel tower after regulation has good safety and stability.
Claims (7)
1. a kind of electric power pylon differential settlement deviation correcting device, including reinforced concrete foundation on the ground is fixedly installed
(15), it is characterised in that also including vertically arranged cylinder (17) and tooth post (5), cylinder (17) inboard is at least on top
An end plate for level (4) is respectively fixedly installed with bottom, the lower end of cylinder (17) is fixedly installed on reinforced concrete foundation
(15) top, the lower end of cylinder (17) offers the backing plate hole (11) of insertion fore-and-aft direction, the upper end of the tooth post (5) and iron
The lower end of tower column foot gusset plate (13) is fixedly connected, and the bottom of tooth post (5) is by the hole that is arranged in the middle part of upper and lower two end plates (4)
Hole is longitudinally slidably plugged in the inside of cylinder (17), and tooth post (5) left and right sides is symmetrically provided with the upper continuous extension in longitudinal direction
Tooth bar (18)；The both sides of tooth post (5), cylinder are symmetrically disposed in inboard at least a pair of the gear wheels (6) of cylinder (17)
(17) inboard is additionally provided with two little gears (7) being meshed with two gear wheels (6) respectively, the gear wheel (6), little gear
(7) it is rotatably connected on cylinder (17) by the Large Gear Shaft (8) at its center, pinion shaft (9) respectively, two gear wheels
(6) tooth bar (18) respectively with tooth post (5) both sides is engaged, and at least one end extends in the rear and front end of the pinion shaft (9)
It is fixedly connected to the outside of the fore-and-aft direction of cylinder (17) and with handle or driving wheel (10).
2. a kind of electric power pylon differential settlement deviation correcting device according to claim 1, it is characterised in that the tooth post
(5) it is fixedly connected with the gusset plate (14) by being fixedly connected the column foot plate (13) held thereon.
3. a kind of electric power pylon differential settlement deviation correcting device according to claim 1 and 2, it is characterised in that the cylinder
The lower end of body (17) is fixedly connected by loading plate (19) with concrete foundation (15) top.
4. a kind of electric power pylon differential settlement deviation correcting device according to claim 3, it is characterised in that the cylinder
(17) cross section is rectangle.
5. a kind of electric power pylon differential settlement deviation correcting device according to claim 4, it is characterised in that the cylinder
(17) left plate (3) and right plate being oppositely arranged by the front and rear front vertical plate (1) being oppositely arranged and back vertical plate (2) and left and right
(16) it is formed by fixedly connecting, the lower end of the front vertical plate (1) and back vertical plate (2) is fixedly connected with loading plate (19), the pad
The bottom of front vertical plate (1) and back vertical plate (2) is opened in insertion before and after plate hole (11).
6. a kind of electric power pylon differential settlement deviation correcting device according to claim 5, it is characterised in that also including multiple
For the billet (12) being filled in the backing plate hole (11).
7. a kind of electric power pylon differential settlement deviation correcting device according to claim 6, it is characterised in that the little gear
The rear and front end of axle (9) extends respectively into the outside of the fore-and-aft direction of cylinder (17) and is fixed with handle or driving wheel (10) and connects
Connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710045083.XA CN106703091B (en) | 2017-01-22 | 2017-01-22 | A kind of electric power pylon differential settlement deviation correcting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710045083.XA CN106703091B (en) | 2017-01-22 | 2017-01-22 | A kind of electric power pylon differential settlement deviation correcting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106703091A true CN106703091A (en) | 2017-05-24 |
| CN106703091B CN106703091B (en) | 2018-08-07 |
Family
ID=58909405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710045083.XA Active CN106703091B (en) | 2017-01-22 | 2017-01-22 | A kind of electric power pylon differential settlement deviation correcting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106703091B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107354998A (en) * | 2017-07-19 | 2017-11-17 | 姚攀峰 | A kind of foundation-free node and its construction method |
| CN108396766A (en) * | 2018-05-21 | 2018-08-14 | 河南理工大学 | A kind of goaf place high voltage power transmission tower can rectify a deviation basis and its method for correcting error |
| CN109162306A (en) * | 2018-10-31 | 2019-01-08 | 青岛正为能源科技有限公司 | A kind of communication steel tower differential settlement deviation correcting device and its application method |
| CN110004970A (en) * | 2019-04-24 | 2019-07-12 | 四川南充电力设计有限公司 | A kind of concrete structure for preventing power equipment from toppling over |
| CN112900954A (en) * | 2021-01-20 | 2021-06-04 | 云南电网有限责任公司电力科学研究院 | Device for adjusting angle of iron tower and power transmission iron tower |
| CN113107253A (en) * | 2021-04-08 | 2021-07-13 | 云南电网有限责任公司电力科学研究院 | Device for adjusting inclination angle of transmission tower |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2148797Y (en) * | 1993-03-10 | 1993-12-08 | 李宪君 | Adjusting device for erecting iron tower |
| CN201818099U (en) * | 2010-03-26 | 2011-05-04 | 四川电力送变电建设公司 | Iron tower hydraulic centralizing system |
| KR20130107712A (en) * | 2012-03-23 | 2013-10-02 | 천공전기(주) | Apparatus for installing liner plate for deep foundation construction of power transmission steel tower and method constructing deep foundation using the same |
| CN203960919U (en) * | 2013-11-18 | 2014-11-26 | 国家电网公司 | Colliery minery electric power pylon correction lift-up device |
| CN205776317U (en) * | 2016-06-23 | 2016-12-07 | 中国电力工程顾问集团中南电力设计院有限公司 | A kind of power transmission line iron tower foundation attachment structure with deviation-correcting function |
| CN206859283U (en) * | 2017-01-22 | 2018-01-09 | 中国矿业大学 | Electric power pylon differential settlement deviation correcting device |
-
2017
- 2017-01-22 CN CN201710045083.XA patent/CN106703091B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2148797Y (en) * | 1993-03-10 | 1993-12-08 | 李宪君 | Adjusting device for erecting iron tower |
| CN201818099U (en) * | 2010-03-26 | 2011-05-04 | 四川电力送变电建设公司 | Iron tower hydraulic centralizing system |
| KR20130107712A (en) * | 2012-03-23 | 2013-10-02 | 천공전기(주) | Apparatus for installing liner plate for deep foundation construction of power transmission steel tower and method constructing deep foundation using the same |
| CN203960919U (en) * | 2013-11-18 | 2014-11-26 | 国家电网公司 | Colliery minery electric power pylon correction lift-up device |
| CN205776317U (en) * | 2016-06-23 | 2016-12-07 | 中国电力工程顾问集团中南电力设计院有限公司 | A kind of power transmission line iron tower foundation attachment structure with deviation-correcting function |
| CN206859283U (en) * | 2017-01-22 | 2018-01-09 | 中国矿业大学 | Electric power pylon differential settlement deviation correcting device |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107354998A (en) * | 2017-07-19 | 2017-11-17 | 姚攀峰 | A kind of foundation-free node and its construction method |
| CN107354998B (en) * | 2017-07-19 | 2023-04-11 | 姚攀峰 | Foundation-free joint and construction method thereof |
| CN108396766A (en) * | 2018-05-21 | 2018-08-14 | 河南理工大学 | A kind of goaf place high voltage power transmission tower can rectify a deviation basis and its method for correcting error |
| CN109162306A (en) * | 2018-10-31 | 2019-01-08 | 青岛正为能源科技有限公司 | A kind of communication steel tower differential settlement deviation correcting device and its application method |
| CN109162306B (en) * | 2018-10-31 | 2020-11-13 | 青岛正为能源科技有限公司 | Uneven settlement correcting device for communication iron tower and using method thereof |
| CN110004970A (en) * | 2019-04-24 | 2019-07-12 | 四川南充电力设计有限公司 | A kind of concrete structure for preventing power equipment from toppling over |
| CN112900954A (en) * | 2021-01-20 | 2021-06-04 | 云南电网有限责任公司电力科学研究院 | Device for adjusting angle of iron tower and power transmission iron tower |
| CN113107253A (en) * | 2021-04-08 | 2021-07-13 | 云南电网有限责任公司电力科学研究院 | Device for adjusting inclination angle of transmission tower |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106703091B (en) | 2018-08-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106703091B (en) | A kind of electric power pylon differential settlement deviation correcting device | |
| CN107618325A (en) | Combined concrete conveyance tank car | |
| US9790742B2 (en) | Drilling apparatus and method for drilling | |
| CN202215270U (en) | Circulating self-moving forepoling hydraulic support | |
| CN204716251U (en) | Circular orbit formula multifunctional rock drilling trolley | |
| CN106437511A (en) | Modularized multifunctional drill jambo system | |
| CN112360340A (en) | Automatic anchor rod drill carriage | |
| CN112228126A (en) | Contractibility power transmission connecting device suitable for primary support of large-deformation tunnel | |
| CN206859283U (en) | Electric power pylon differential settlement deviation correcting device | |
| CN109775234A (en) | A kind of adjustable pulley type conveyer | |
| CN207634090U (en) | Tunnel inverted arch formwork for placing | |
| CN207483299U (en) | A kind of strong high-altitude operation vehicle of balance | |
| CN211144365U (en) | Pile driver is used in road bridge construction | |
| CN206128158U (en) | Underground continuous wall construction equipment | |
| CN207377492U (en) | A kind of colliery joint-cutting drilling machine | |
| CN206581890U (en) | The hydraulic track type rig on Drilling coarse granule stratum | |
| CN202745692U (en) | Integrated core drilling machine for single cylinder with double functions tower crane | |
| CN106121507B (en) | The construction platform of rotary drilling rig in foundation pit | |
| CN214995718U (en) | Supporting frame for coal mining tunneling roadway | |
| CN215165576U (en) | Pile driver of construction usefulness is built in room | |
| CN100417786C (en) | Self-propelled cable machine | |
| CN108725504A (en) | A kind of Underwell mining transport track hand cart device | |
| CN201863914U (en) | Traveling device for multifunctional rapid drill | |
| CN207348063U (en) | Piling pile pulling all-in-one machine with folding support guide upright post | |
| CN219733427U (en) | Coal mine excavating supporting structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: No. 1, Tongshan University Road, Xuzhou, Jiangsu Province, Jiangsu Applicant after: China University of Mining & Technology Address before: 221000 Xuzhou University Road, Jiangsu, No. 1 Applicant before: China University of Mining & Technology |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |