CN104142521A - Geological radar antenna equipment moving and testing device during tunnel construction - Google Patents
Geological radar antenna equipment moving and testing device during tunnel construction Download PDFInfo
- Publication number
- CN104142521A CN104142521A CN201410322404.2A CN201410322404A CN104142521A CN 104142521 A CN104142521 A CN 104142521A CN 201410322404 A CN201410322404 A CN 201410322404A CN 104142521 A CN104142521 A CN 104142521A
- Authority
- CN
- China
- Prior art keywords
- radar antenna
- antenna equipment
- testing device
- geological radar
- tripod
- 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
Abstract
The invention discloses a geological radar antenna equipment moving and testing device during tunnel construction. The geological radar antenna equipment moving and testing device during tunnel construction comprises a tripod, a rotary table, operation rods, supporting rods and a fixing plate. The tripod is stably fixed at the back of a tested tunnel face. An exposed threaded end is arranged on the lower portion of the rotary table and used for being fixed to the tripod. The rotary table is provided with two reversing structures, wherein the operation rods penetrate through the reversing structures, the reversing structures can control the operation rods to rotate vertically and horizontally. The operation rods are nested and telescopic connection rods. One end of each operation rod is manually controlled, and the other end of each operation rod is connected with the fixing plate. Each operation rod is provided with a movable sleeve. One end of each supporting rod is connected to a movable nut on the side wall of the corresponding movable sleeve. The other end of each supporting rod is connected to the bottom end of a telescopic circular strut of the tripod. The fixing plate is used for fixing geological radar antenna equipment. A circuit of the geological radar antenna equipment penetrates through a hole in the middle of the fixing plate and is connected with a radar host. According to the geological radar antenna equipment moving and testing device during tunnel construction, part of the devices can be disassembled, stretched out and drawn back conveniently and stored separately, so that the occupied space for carrying the geological radar antenna equipment is reduced.
Description
Technical field
The present invention relates to geological radar antenna equipment moving testing device in constructing tunnel process, especially a kind of antenna equipment for the geological radar in the larger situation of tunnel tunnel face disaster danger moves testing device.
Background technology
Along with developing rapidly of development of the West Regions cause, transportation projects is also just stepping up step, in order to improve the interchange of efficiency and And Foreign Culture economy of communications and transportation, the railway of western mountainous areas, highway are kept away the building such as the underground space of unavoidably building tunnel in mountain terrain, and the complexity of western geological condition is the large obstacle that engineering is carried out smoothly always.By scientific worker's continuous research and test, in order to grasp in time geological condition building in Tunnel Engineering, advance geologic prediction has become the powerful measure of precognition geological condition, geological radar is a kind of important tool of advance geologic prediction, geological radar is mainly divided into main frame, antenna and connecting line, and in actual rotating detection process, need many people that the antenna equipment of tens of kilograms of weighing is being pasted to face rock mass and move around with certain speed, thereby complete geological radar forecast work.In actual mechanical process, may get rid of the danger not exclusively due to face rock mass, or the factor such as face caves in, piece stone is more, out-of-flatness, free-hand movable radar antenna equipment is had to certain difficulty, radar testing precision is also had to obvious impact.
Summary of the invention
The deficiency existing for solving prior art, the invention discloses geological radar antenna equipment moving testing device in constructing tunnel process, the application provide a kind of flexibly, safety and labour-saving equipment praises moving method, the motion scan being used for for the geological radar antenna equipment in the out-of-flatness of tunnel tunnel face rock mass or the larger situation of risk, be used in tunnel geological forecast to face more safety and on a large scale in carry out testing.
For achieving the above object, concrete scheme of the present invention is as follows:
Geological radar antenna equipment moving testing device in constructing tunnel process, comprise tripod, universal stage, control lever, support bar and fixed head, described tripod is stable in the tunnel tunnel face rear of institute's testing, described universal stage bottom is a threaded end of emerging, in order to be fixed on tripod, universal stage be provided with two for control lever through and can control operation bar the break-in structure of the upper and lower four direction rotation in left and right, control lever is nested telescopic connecting rod, one end is manual control end, the other end is connected and fixed plate, control lever is provided with a moving casing, movable nut on the sidewall of moving casing connects one end of support bar, the other end of support bar is connected to the flexible round pillar bottom on tripod, fixed head is in order to fixed radar antenna equipment, and the circuit of radar antenna equipment is connected with radar host computer through the hole at fixed head middle part.
Described tripod comprise three wooden regulate and control supporting leg and a telescopic round pillar of length, supporting leg bottom is the pyrometric cone of cast iron pressable processed, pyrometric cone is provided with Vertical Compression face, and in order to by pyrometric cone compacting, circle pillar is the telescopic steel pole that two-section connects up and down.
Described telescopic steel pole upper section thick lower section thin, one section of thicker end is provided with fixing bibcock, in order to fix the length of justifying pillar, one section of thinner end is provided with up and down the threaded end of two rotary types side by side.
Described universal stage is the right cylinder of common carbonaceous steel, is that a threaded end is emerged under universal stage, in order to be fixed on tripod, is two break-in structures on universal stage, in covert structure, is provided with four pulleys, in order to reduce the flexible resistance of control lever.
About described universal stage inside is respectively provided with a horizontal bearing, rotates in order to control on the rotary table top of two break-in structures, and covert structure can be carried out pitching break-in around axle.
Described control lever is the telescopic two-section rod member of engineering plastics system, and the outside junction of two-section rod member is provided with standing valve, and in order to the length of control operation bar, one of control lever is manual end, and other end is flat with holes, in order to be connected on fixed head.
Described support bar is the telescopic rod member of engineering plastics system, and one of support bar is movable nut, is connected on the bottom of the round pillar on tripod when use, and in order to provide support power, other end is Flat belt nose end, is connected on control lever by moving casing.
The outside of described support bar is provided with fixed knob, in order to control the length of support bar.
Described fixed head is rectangle engineering plastics making sheet part, the middle part of fixed head is provided with opening, uses so that the transmission line on radar antenna equipment passes through, and fixed head is provided with two hanging holes, hanging hole is located on a long side direction of fixed head, the plumbness when keeping fixed head to be propped up.
Described hanging hole is connected with control lever by band locking and hanging hook.
When work: manually whirlwind control lever, according to the concavo-convex situation of face country rock, adjust direction and the collapsing length of control lever, then regulate height and the direction of radar antenna equipment, complete scanning process and the work of geological radar advance geologic prediction of radar antenna equipment.The difficult problem of cannot be free-hand pressing close to face movable radar antenna that the present invention taken into full account the out-of-flatness of tunnel tunnel face country rock, fall that piece and landslide bring, solve the remote geology radar testing problem to the face under dangerous situation in safe range, make operating personnel away from disaster source, save manpower, ensured the degree of accuracy of testing simultaneously.
Beneficial effect of the present invention:
The invention solves remote to face in the irregular or larger situation of risk of tunnel tunnel face country rock, press close to formula and carry out geological radar scanning problem, have the following advantages:
1, can conveniently partial devices be dismantled, be stretched, separately receive dress, reduce Portable device and take up space;
2, can be with face country rock irregular conditions, the length of adjusting gear operation height and rod member, can carry out radar scanning work targetedly to target site;
3, well whirligig, telescoping rod carry radar antenna equipment by fixed head and are close to face, make testing result more accurate;
4, can carry out radar scanning operation away from the dangerous rock mass of tunnel tunnel face, to geologic prediction work bring efficiently, safety and economic benefit.
Brief description of the drawings
Fig. 1 is one-piece construction schematic diagram of the present invention;
Fig. 2 is universal stage 7 schematic diagram in structure of the present invention;
Fig. 3 is control lever 9 and support bar 12 schematic diagram in structure of the present invention;
Fig. 4 is moving casing 11 schematic diagram in structure of the present invention;
Fig. 5 is covert structure 8 schematic diagram in structure of the present invention;
Fig. 6 is fixed head 13 schematic diagram in structure of the present invention;
Fig. 7 is band locking and hanging hook 15 schematic diagram in structure of the present invention;
In figure, 1. tripod; 2. pyrometric cone; 3. flexible circle pillar; 4. fixing bibcock; 5. rotary type threaded end; 6. regulate bibcock; 7. universal stage; 8. break-in structure; 9. control lever; 10. fixed knob; 11. moving casings; 12. support bars; 13. fixed heads; 14. hanging holes; 15. band locking and hanging hooks; 16. radar antenna equipment; 17. radar host computers; 18. tunnel tunnel faces.
Embodiment:
Below in conjunction with accompanying drawing, the present invention is described in detail:
As shown in Fig. 1-7, geological radar antenna equipment moving testing device in constructing tunnel process, comprise tripod 1, universal stage 7, control lever 9, support bar 12 and fixed head 13, described tripod 1 is stable in tunnel tunnel face 18 rears of institute's testing, described universal stage 7 bottoms are a threaded end of emerging, in order to be fixed on tripod 1, universal stage 7 be provided with two for control lever 9 through and break-in structure 8 that can the 9 upper and lower four directions rotations in left and right of control operation bar, control lever 9 is nested telescopic connecting rod, one end is manually to control, the other end is connected and fixed plate 13, control lever 9 is provided with a moving casing 11, movable nut on the sidewall of moving casing 11 connects one end of support bar 12, the other end of support bar 12 is connected to flexible round pillar 3 bottoms on tripod 1, fixed head 13 is in order to fixed radar antenna equipment 16, and the circuit of radar antenna equipment 16 is connected with radar host computer 17 through the hole at fixed head 13 middle parts.
Tripod 1 comprise three wooden regulate and control supporting leg and a scalable round pillar 1 of length, supporting leg is by regulating bibcock 6 to regulate length, supporting leg bottom is the pyrometric cone 2 of cast iron pressable processed, pyrometric cone 2 is provided with Vertical Compression face, in order to by pyrometric cone 2 compactings, stretch and justify the telescopic steel pole that pillar 1 connects up and down for two-section.Telescopic steel pole upper section thick lower section thin, one section of thicker end is provided with fixing bibcock 4, in order to fixing length of stretching round pillar 1, one section of thinner end is provided with up and down two rotary type threaded ends 5 side by side.
Universal stage 7 is the right cylinder of common carbonaceous steel, and universal stage is for 7 times that a threaded end is emerged, and in order to be fixed on tripod 1, is two break-in structures 8 on universal stage 7, in covert structure 8, is provided with four pulleys, in order to reduce the flexible resistance of control lever.The inner left and right of universal stage 7 is respectively provided with a horizontal bearing, and in order to control the rotation on 7 of universal stages of two break-in structures 8, covert structure 8 can be carried out pitching break-in around axle.
Control lever 9 is the telescopic two-section rod member of engineering plastics system, and the outside junction of two-section rod member is provided with standing valve, and in order to the length of control operation bar 9, one of control lever 9 is manual end, and other end is flat with holes, in order to be connected on fixed head 13.Support bar 12 is the telescopic rod member of engineering plastics system, and one of support bar 12 is movable nut, is connected on the bottom of the round pillar on tripod 1 when use, and in order to provide support power, other end is Flat belt nose end, is connected on control lever 9 by moving casing 11.The outside of support bar 12 is provided with fixed knob 10, in order to control the length of support bar 12.
Fixed head 13 is rectangle engineering plastics making sheet part, the middle part of fixed head 13 is provided with opening, with so that the transmission line on radar antenna equipment 16 pass through, fixed head 13 is provided with two hanging holes 14, hanging hole 14 is located on a long side direction of fixed head 13, the plumbness when keeping fixed head 13 to be propped up.Hanging hole 14 is connected with control lever 9 by band locking and hanging hook 15.
When installation: the supporting leg bottom of tripod is cast iron pressable pyrometric cone 2 processed, be used for the firm tripod of compacting, regulate bibcock 6 to be used for regulating supporting leg to make pallet be tending towards level and reach a certain height, regulate after supporting leg, regulate flexible circle pillar 3, end is pushed up on the ground, and the bibcock 4 that is tightened, two control lever 9 are inserted in break-in structure 8, and moving casing 11 is enclosed within to control lever leading portion, regulate the knob 10 that is tightened after control lever height, 12 1 sections of support bars are connected on moving casing 11, after adjusting length, screw after the fixed knob 10 on it, the other end is connected on rotary type threaded end 5, utilize band locking and hanging hook 15 that control lever 9 is connected to fixed head 13, fixed head fixes radar antenna equipment 16, adjust control lever 9, carry out radar scanning, complete geological radar testing work.
Universal stage 7 inside are provided with two bearings, and in order to rotate covert structure 8, universal stage bottom is provided with a threaded end and emerges, in order to be connected and fixed with tripod 1.Covert structure 8 can be rotated along axle in perpendicular, and is provided with four pulleys therein, and in order to reduce control lever sliding resistance therein, two covert structures 8 are design one on the other, can convenient operation bar 9 cross-references.
Control lever 9 and support bar 12 are higher and nonconducting engineering plastics (PC, the POM) rod member of elasticity, avoid interference the electromagnetic wave that radar antenna equipment 16 is propagated.The middle part of fixed head 13 is opening, headspace is convenient to allow parts exposure and the connections such as the transmission line of radar antenna equipment, two relatively both sides on fixed head 13 1 long limits of hanging hole design with holes, be convenient to fixed head 13 and radar antenna equipment 16 equipment in vertical state, and fixed head is higher elasticity and nonconducting engineering plastics (PC, POM), avoid interference the electromagnetic wave that radar antenna equipment 16 is propagated.
Claims (10)
1. geological radar antenna equipment moving testing device in constructing tunnel process, it is characterized in that, comprise tripod, universal stage, control lever, support bar and fixed head, described tripod is stable in the tunnel tunnel face rear of institute's testing, described universal stage bottom is a threaded end of emerging, in order to be fixed on tripod, universal stage be provided with two for control lever through and can control operation bar the break-in structure of the upper and lower four direction rotation in left and right, control lever is nested telescopic connecting rod, one end is manual control end, the other end is connected and fixed plate, control lever is provided with a moving casing, movable nut on the sidewall of moving casing connects one end of support bar, the other end of support bar is connected to the flexible round pillar bottom on tripod, fixed head is in order to fixed radar antenna equipment, the circuit of radar antenna equipment is connected with radar host computer through the hole at fixed head middle part.
2. geological radar antenna equipment moving testing device in constructing tunnel process as claimed in claim 1, it is characterized in that, described tripod comprise three wooden regulate and control supporting leg and a telescopic round pillar of length, supporting leg bottom is the pyrometric cone of cast iron pressable processed, pyrometric cone is provided with Vertical Compression face, in order to by pyrometric cone compacting, circle pillar is the telescopic steel pole that two-section connects up and down.
3. geological radar antenna equipment moving testing device in constructing tunnel process as claimed in claim 2, it is characterized in that, described telescopic steel pole upper section thick lower section carefully, one section of thicker end is provided with fixing bibcock, in order to the length of fixing circle pillar, one section of thinner end is provided with up and down the threaded end of two rotary types side by side.
4. geological radar antenna equipment moving testing device in constructing tunnel process as claimed in claim 1, it is characterized in that, described universal stage is the right cylinder of common carbonaceous steel, under universal stage, be that a threaded end is emerged, in order to be fixed on tripod, on universal stage, be two break-in structures, in covert structure, be provided with four pulleys, in order to reduce the flexible resistance of control lever.
5. geological radar antenna equipment moving testing device in constructing tunnel process as claimed in claim 1, it is characterized in that, left and right, described universal stage inside is respectively provided with a horizontal bearing, rotates on rotary table top in order to control two break-in structures, and covert structure can be carried out pitching break-in around axle.
6. geological radar antenna equipment moving testing device in constructing tunnel process as claimed in claim 1, it is characterized in that, described control lever is the telescopic two-section rod member of engineering plastics system, the outside junction of two-section rod member is provided with standing valve, in order to the length of control operation bar, one of control lever is manual end, and other end is flat with holes, in order to be connected on fixed head.
7. geological radar antenna equipment moving testing device in constructing tunnel process as claimed in claim 1, it is characterized in that, described support bar is the telescopic rod member of engineering plastics system, one of support bar is movable nut, when use, be connected on the bottom of the round pillar on tripod, in order to provide support power, other end is Flat belt nose end, is connected on control lever by moving casing.
8. geological radar antenna equipment moving testing device in constructing tunnel process as claimed in claim 7, is characterized in that, the outside of described support bar is provided with fixed knob, in order to control the length of support bar.
9. geological radar antenna equipment moving testing device in constructing tunnel process as claimed in claim 1, it is characterized in that, described fixed head is rectangle engineering plastics making sheet part, the middle part of fixed head is provided with opening, with so that the transmission line on radar antenna equipment pass through, fixed head is provided with two hanging holes, and hanging hole is located on a long side direction of fixed head, the plumbness when keeping fixed head to be propped up.
10. geological radar antenna equipment moving testing device in constructing tunnel process as claimed in claim 9, is characterized in that, described hanging hole is connected with control lever by band locking and hanging hook.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410322404.2A CN104142521B (en) | 2014-07-08 | 2014-07-08 | Geological radar antenna equipment moving and testing device during tunnel construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410322404.2A CN104142521B (en) | 2014-07-08 | 2014-07-08 | Geological radar antenna equipment moving and testing device during tunnel construction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104142521A true CN104142521A (en) | 2014-11-12 |
| CN104142521B CN104142521B (en) | 2017-01-18 |
Family
ID=51851747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410322404.2A Active CN104142521B (en) | 2014-07-08 | 2014-07-08 | Geological radar antenna equipment moving and testing device during tunnel construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104142521B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105098313A (en) * | 2015-08-25 | 2015-11-25 | 长安大学 | Tunnel geological advanced prediction radar antenna adaptive position-adjusting device |
| CN106646630A (en) * | 2016-12-28 | 2017-05-10 | 山东大学 | Geological radar assisting boarding device and method |
| CN107102366A (en) * | 2015-09-21 | 2017-08-29 | 安徽理工大学 | A kind of exploration device for possessing auto-telescopic mechanism |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4179216A (en) * | 1977-05-31 | 1979-12-18 | Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H. | Apparatus for measuring the profile of a railroad tunnel |
| KR100972655B1 (en) * | 2008-08-01 | 2010-07-27 | 주식회사 한국국토안전연구원 | Assistance device for supporting GPR antenna |
| CN201707453U (en) * | 2010-04-02 | 2011-01-12 | 云南省建筑科学研究院 | Auxiliary device for radar nondestructive detection used in wall of tunnel |
| CN201893433U (en) * | 2010-11-18 | 2011-07-06 | 山东大学 | Sliding split radar antenna fixing device with changed spacing |
| CN102759754A (en) * | 2012-07-16 | 2012-10-31 | 中铁第四勘察设计院集团有限公司 | Tunnel arch crown detection device |
| CN103175565A (en) * | 2013-03-25 | 2013-06-26 | 长沙理工大学 | Tunnel lining detection support with height and angle capable of being automatically adjusted |
| CN103697932A (en) * | 2013-12-25 | 2014-04-02 | 中国建筑第五工程局有限公司 | Tunnel detector |
| CN204086569U (en) * | 2014-07-08 | 2015-01-07 | 山东大学 | Geological radar antenna equipment moving testing device in constructing tunnel process |
-
2014
- 2014-07-08 CN CN201410322404.2A patent/CN104142521B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4179216A (en) * | 1977-05-31 | 1979-12-18 | Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H. | Apparatus for measuring the profile of a railroad tunnel |
| KR100972655B1 (en) * | 2008-08-01 | 2010-07-27 | 주식회사 한국국토안전연구원 | Assistance device for supporting GPR antenna |
| CN201707453U (en) * | 2010-04-02 | 2011-01-12 | 云南省建筑科学研究院 | Auxiliary device for radar nondestructive detection used in wall of tunnel |
| CN201893433U (en) * | 2010-11-18 | 2011-07-06 | 山东大学 | Sliding split radar antenna fixing device with changed spacing |
| CN102759754A (en) * | 2012-07-16 | 2012-10-31 | 中铁第四勘察设计院集团有限公司 | Tunnel arch crown detection device |
| CN103175565A (en) * | 2013-03-25 | 2013-06-26 | 长沙理工大学 | Tunnel lining detection support with height and angle capable of being automatically adjusted |
| CN103697932A (en) * | 2013-12-25 | 2014-04-02 | 中国建筑第五工程局有限公司 | Tunnel detector |
| CN204086569U (en) * | 2014-07-08 | 2015-01-07 | 山东大学 | Geological radar antenna equipment moving testing device in constructing tunnel process |
Non-Patent Citations (1)
| Title |
|---|
| 白明洲 等: ""隧道施工中溶洞超前探测的雷达技术应用研究"", 《勘察科学技术》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105098313A (en) * | 2015-08-25 | 2015-11-25 | 长安大学 | Tunnel geological advanced prediction radar antenna adaptive position-adjusting device |
| CN105098313B (en) * | 2015-08-25 | 2017-09-01 | 长安大学 | A kind of adaptive rackwork of tunnel geological prediction radar antenna |
| CN107102366A (en) * | 2015-09-21 | 2017-08-29 | 安徽理工大学 | A kind of exploration device for possessing auto-telescopic mechanism |
| CN107329179A (en) * | 2015-09-21 | 2017-11-07 | 安徽理工大学 | It is a kind of to possess the exploration support for axially and radially intersecting rotation |
| CN107102366B (en) * | 2015-09-21 | 2019-04-05 | 安徽理工大学 | A kind of exploration device having auto-telescopic mechanism |
| CN107102366B8 (en) * | 2015-09-21 | 2019-05-17 | 安徽理工大学 | A kind of exploration device having auto-telescopic mechanism |
| CN106646630A (en) * | 2016-12-28 | 2017-05-10 | 山东大学 | Geological radar assisting boarding device and method |
| CN106646630B (en) * | 2016-12-28 | 2019-01-22 | 山东大学 | A kind of auxiliary loading device and method suitable for geological radar |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104142521B (en) | 2017-01-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104099954B (en) | The horizontal vertical loading device of pile foundation model testing | |
| CN105783759A (en) | Tunnel surrounding rock deformation monitoring device and method | |
| CN104142521A (en) | Geological radar antenna equipment moving and testing device during tunnel construction | |
| CN205157773U (en) | But tunnel lining of automatically regulated height and angle detects support | |
| CN103994309A (en) | Lifting device for bearing laser paying-off device | |
| CN109056853B (en) | A kind of mechanism of telescopic measurement landslide big displacement | |
| CN108802450A (en) | Ammeter box mounting and positioning device and operating platform | |
| CN105569097A (en) | Test device and method for drawing bucket foundation model at any angles | |
| CN104849772A (en) | Auxiliary device for operation of geological radar in construction of tunnel face of large-section tunnel | |
| CN203822175U (en) | Drilling machine rack | |
| CN204086569U (en) | Geological radar antenna equipment moving testing device in constructing tunnel process | |
| CN203069127U (en) | Verticality detector | |
| CN211601790U (en) | Measuring tool for building engineering management | |
| CN204571971U (en) | A kind of convenient gravity laser vertical degree, diameter detecting instrument | |
| CN207976155U (en) | Measurement of the level prism centering rod | |
| CN110925546A (en) | Three-dimensional acquisition device and acquisition method for tunnel geological radar advanced prediction data | |
| CN207392270U (en) | A kind of Construction of Deep Excavation Engineering and monitoring simulation test device | |
| CN204554267U (en) | A kind of geological radar monitoring supporting frame | |
| CN206233113U (en) | A kind of spiral height adjuster of bottom die of box-beam plate | |
| CN204649996U (en) | Geological radar operation assisting device in a kind of large cross-section tunnel face construction | |
| CN204718561U (en) | Portable electric pole gradient measurement instrument | |
| CN211478153U (en) | Tunnel lining quality safety inspection device | |
| CN209197843U (en) | A kind of powder level height displaying device being convenient for measuring | |
| CN203702197U (en) | Balance fine adjustment device of mining single hydraulic prop | |
| CN207963789U (en) | The deformation measuring device on building basis under mining influence |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |