CN202090874U - Integrated advance support device for mine speedy drivage - Google Patents
Integrated advance support device for mine speedy drivage Download PDFInfo
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- CN202090874U CN202090874U CN2011202059548U CN201120205954U CN202090874U CN 202090874 U CN202090874 U CN 202090874U CN 2011202059548 U CN2011202059548 U CN 2011202059548U CN 201120205954 U CN201120205954 U CN 201120205954U CN 202090874 U CN202090874 U CN 202090874U
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- rail
- pin
- rail chair
- hole
- portal trestle
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Abstract
The utility model particularly relates to an integrated advance support device for speedy drivage of roadways, and solves the problems in the conventional advance support device for speedy drivage of roadways that the working velocity is slow, the application range is narrow and an anchor rod can not be quickly injected. The integrated advance support device for speedy drivage of roadways comprises two sliding rails arranged in parallel, wherein three gantry brackets (namely, gantry brackets I, II and III) are arranged on the sliding rails in parallel from front to back; an anchor rod injecting bracket is fixed to the front ends of the sliding rails; an anchor rod injecting cross beam is connected between the tops of two hydrocylinders of the anchor rod injecting bracket; a plurality of anchor rod head mounting base plates are uniformly distributed on the anchor rod injecting cross beam; a plurality of front probing beams are arranged horizontally on the front side surface of the gantry bracket I; a rail seat II is sleeved on a rail in the sliding rails and fixed with a sliding block on the gantry bracket III; a push hydrocylinder is connected between a rail seat I and the rail seat II; and the rail seat I is in detachable connection with a sliding block on the gantry bracket I. The integrated advance support device has the advantages of felicitous and reasonable structure, reliable performances, simplicity and convenience in mounting, convenience in operation, and wide application range of roadways.
Description
Technical field
Support apparatus when the utility model relates to excavation is specially a kind of roadway and digs the advance support integration unit soon.
Background technology
Topmost mode is boom-type roadheader and MQT series jumbolter in China's tunnel speedy drivage mode, SPJ-650 type rubber conveyer supporting technology production line, be also referred to as tunnel comprehensive mechanized driving, but combine flat still the pacing up and down about 350 meters of the single water inlet of pick.The leading temporary lining safety problem of tunnelling is a puzzlement Coal Production technical barrier for many years.The temporary lining form of generally mentioning use in the domestic coal mine roadway driving is that suspension ring (U type card) string beam and pillar add two kinds of support forms of crossbeam, this dual mode all exists unreliable, the potential safety hazards such as operation easier is big, supporting intensity is low, empty top zone anchoring operation of safety, use construction technology of a pick, the cycle operation time is long, and the restriction drivage efficiency improves.Along with the development of combining the technology of adopting, domestic annual output millions of tonnes even the super work plane of ten-million-ton scale of having occurred, make year to consume stope drift active workings quantity and increase considerably, and comprehensive mechanized driving speed does not far satisfy the colliery digging and takes out loose smooth and easy, the lifting of link ability of linking, the requirement of stable high yield security developments now.So the measure that take in domestic colliery is to increase the group solution digging of driving team to be connected nervous situation, yet driving team group is in order to pursue drilling depth, it is long operation operation, the operation of override top, supporting untimely, empty top time often to occur striding, and anchor-holding force of anchor bolt do not reach the supporting requirement, not according to phenomenons of operating against regulations such as regular loop organization productions.Therefore, need that a kind of volume is little, structure is simple relatively, dependable performance, simple installation, simple to operate, the manually operated utility model mill auxiliaries device that is suitable for the underground work environment, be used for the leading temporary lining of driving face, beat and annotate anchor pole, anchor cable, set up the safe and efficient speedy drivage of i iron capplce realization comprehensive mechanization fast.
It is on probation to carry out the airborne temporary support device of boom-type roadheader since part producing mine in 2010 (Xishan coal electricity group company mine duerping, malanite, town Cheng Dikuang, Huozhou coal electricity dry river ore deposit etc.), realized mechanization temporary lining, eliminated suspension ring (U type card) string beam and pillar and added two kinds of artificial support forms of crossbeam.But there is following problem in the airborne temporary support device of development machine: (1) this device has only 1.5 tons to top board maximum support power, only plays the top effect of protecting under the good situation of geological conditions.(2) if when the big fragmentation of roof pressure, scaling or geological conditions are changeable, this device is inoperative.(3) this device is assemblied in and blocks driver's sight line on the development machine cantilever and the development machine front lamp disturbs normal cut operation.This device can not overturn smoothly and open withdrawal when (4) head-room was lower than 3.0 meters, head-room during greater than 4.0 meters this device can not use.(5) airborne front-probe support device protects that top area is little to have only 2.5 * 2.5 square metres.(6) during airborne leading temporary lining, can only beat and annotate the top anchor pole that side is helped in tunnel two, the top anchor pole at other position has only machine-carried forepoling device to regain and can beat notes.(7) using airborne temporary support device to carry out supporting operation operation restriction drivage efficiency improves.
Summary of the invention
The advanced stand device operating rate is slow in order to solve in the existing tunnel speedy drivage for the utility model, narrow application range, can not beat the problem of annotating anchor pole fast, provides a kind of roadway to dig the advance support integration unit soon.
The utility model is to adopt following technical scheme to realize: roadway is dug the advance support integration unit soon, it is characterized in that: comprise two slide rails that are set up in parallel, every one slide rail is provided with inner orbit groove, two rail grooves side by side of outside track groove; Portal trestle I, portal trestle II, three door shaped stents of portal trestle III have been arranged in juxtaposition on the slide rail from front to back, each portal trestle comprises two carrier bases, be fixed with a slide block that is enclosed within on the slide rail outside track groove on each carrier base, each inserts an intrinsic hydraulic prop upper and lower surface of each carrier base, is connected with crossbeam between two hydraulic prop tops of carrier base top; The slide rail front end is fixed with anchor pole and beats the notes support, anchor pole is beaten the notes support and is comprised two rail chair I that are enclosed within respectively on the slide rail inner orbit groove, two rail chair I inboards are vertically fixed a hydraulic jack respectively, be connected with anchor pole between two hydraulic jack tops and beat the notes crossbeam, anchor pole is beaten to annotate on the crossbeam and is laid with some anchor pole head installation chassis; Be horizontally disposed with some forestopes on the crossbeam of portal trestle I, be with on the slide rail inner orbit groove and the fixing rail chair II of the slide block of portal trestle III, be connected with the promotion hydraulic jack between rail chair I and the rail chair II, be releasable connection between the slide block of rail chair I and portal trestle I.The upper and lower surface of carrier base is inserted the mode that solid-liquid is pressed pillar, the fixing mode of slide block on carrier base, the rail chair II, slide block, rail chair I, rail chair II are enclosed within the mode of the releasable connection between the slide block of mode, rail chair I and portal trestle I on the slide rail, and these all are that those skilled in the art expect easily and realize.The definition slide rail is fixed with anchor pole, and to beat an end of annotating support be front end, defines each parts and part between back two slide rails is installed for inboard.Roadway is dug after advance support integration unit assembling finishes soon, preparation comprises steel band laterally is placed on the portal trestle I forestope by the array pitch of operating regulation regulation requirement, steel mesh reinforcement is placed on the steel band, spring jackscrew pin on the forestope blocks it and is tight with 12# iron wire bundle group, enough 1.6 to 3.2 meters of driving machine cut, cutterhead is fallen, and with development machine and cutting head locking, roadway is dug the advance support integration unit soon and is prepared to start working.
In the concrete course of work:
The first step, the hydraulic prop elongation of portal trestle II, portal trestle III, support the tunnel roof and floor, load onto the releasable connection between the slide block of rail chair I and portal trestle I, the hydraulic prop of portal trestle I shortens, the elongation of promotion hydraulic jack drives portal trestle I and anchor pole and plays the reach of notes support.After reach put in place, the hydraulic prop elongate support of portal trestle I was lived roof and floor.
In second step, the hydraulic prop of portal trestle III shortens, and promotes hydraulic jack and shortens, and drives the reach of portal trestle III.
The 3rd step, the releasable connection between the slide block of the rail chair I of dismantling and portal trestle I, the hydraulic prop of portal trestle II shortens, and promotes the hydraulic jack elongation, and the drive anchor pole is beaten and is annotated support and the reach of portal trestle II.After reach put in place, the hydraulic prop elongate support of portal trestle II was lived the tunnel roof and floor, and hydraulic jack elongation drives the anchor pole that installs drill bit and beats and annotate crossbeam and rise and put in place, rig rotates beats the anchor eye, anchor pole is beaten and is annotated crossbeam decline, and the anchor pole of packing into, anchor pole are played the rising of notes crossbeam and beaten notes first row's anchor pole.Beat to annotate the back anchor pole that finishes and beat and annotate crossbeam and descend, the drill bit that changes the outfit promotes hydraulic jack and shortens and drive anchor pole and beat and annotate support and reach second row's anchor pole position, and anchor pole is beaten and annotated crossbeam and rise, and rig rotates makes a call to second row's anchor eye, and the anchor pole that changes the outfit is then beaten and annotated second and arrange anchor pole.
In the 4th step, anchor pole is played the hydraulic jack shortening of notes support, and the promotion hydraulic jack continues to shorten makes anchor pole beat notes support and portal trestle I arrival same position.A working cycles finishes then, enters headwork circulation next time.
The beneficial effects of the utility model are as follows: roadway digs soon that advance support integration unit structure is ingenious rationally, dependable performance, simple installation, easy to operate, adapt to that the tunnel scope is wide, can supporting type many, the course of work meets " safety regulations in coal mine " pertinent regulations.
1, realizes the ultrafast driving of colliery underworkings.The main cause of restriction comprehensive mechanized driving efficient is the supporting operation; for example drift section is high (3.2 meters) ╳ wide (4.2 meters); tunnel 2.0 meters tunnels; the development machine coal cutting needs 30 minutes, and the permanent supporting in tunnel is carried out in shutdown needs 90 minutes, and wherein beating the notes anchor pole needs 70 minutes; intermediate link needs 20 minutes; four or six manufacturings, three classes of production, a maintenance crew.Producing the actual effective operation time of class for various reasons is 300 minutes, 5 meters of production per-shift drilling depths.Cooperate the development machine operation if adopt roadway to dig the advance support integration unit soon, the development machine coal cutting needs 30 minutes, and the permanent supporting in tunnel is carried out in shutdown needs 30 minutes; wherein beating the notes anchor pole needs 15 minutes, and intermediate link needs 10 minutes, four or six manufacturings; three classes of production, a maintenance crew.Producing the actual effective operation time of class for various reasons is 300 minutes, 10 meters of production per-shift drilling depths.
2, realize the leading interim effective support of mechanization, realization is beaten fast and is annotated anchor pole, anchor cable, sets up the i iron capplce, has realized the mechanization shop frame of anchor net.
3, eliminate the operation of empty top, reduce roof delamination.Personnel are construction operation in the environment of back effective support all the time, eliminates the psychological mental burden of workman to the high-risk operations environment, alleviates labor strength.
4, operation is integrated, improves effective available machine time, reduces the operation cycle-index, reduces operation circulation holding time.
Description of drawings
Fig. 1 is a main TV structure schematic diagram of the present utility model;
Fig. 2 is a plan structure schematic diagram of the present utility model;
Fig. 3 is a side-looking structural representation of the present utility model;
Fig. 4 is the structural representation of portal trestle I;
Fig. 5 beats the structural representation of annotating support for anchor pole;
Fig. 6 is the cross-sectional view of slide rail;
Fig. 7 is the perspective view of carrier base;
Fig. 8 is the perspective view of slide block;
Fig. 9 is the perspective view of rail chair II;
Figure 10 is the perspective view of rail chair I.
Among the figure: 1-slide rail, 2-portal trestle I, 3-portal trestle II, 4-portal trestle III, 5-carrier base, 6-hydraulic prop, the 7-crossbeam, the 8-anchor pole is beaten the notes support, 9-rail chair I, the 10-hydraulic jack, the 11-anchor pole is beaten the notes crossbeam, 12-anchor pole head installation chassis, the 13-forestope, 14-rail chair II, 15-promotes hydraulic jack, the 16-slide block, 17-inner orbit groove, 18-outside track groove, 19-pin-and-hole I, 20-hydraulic prop jack, 21-U type groove I, 22-pilot hole I, 23-projection, 24-pin-and-hole II, 25-pilot hole II, 26-ears draw-in groove, 27-hydraulic oil cylinder sleeve, 28-pin-and-hole III, 29-U type groove II, 30-U shape groove III.
The specific embodiment
Roadway is dug the advance support integration unit soon, it is characterized in that: comprise two slide rails that are set up in parallel 1, every one slide rail is provided with inner orbit groove 17,18 two rail grooves side by side of outside track groove; Portal trestle I 2, portal trestle II 3,4 three door shaped stents of portal trestle III have been arranged in juxtaposition on the slide rail 1 from front to back, each portal trestle comprises two carrier bases 5, be fixed with a slide block 16 that is enclosed within on the slide rail 1 outside track groove 18 on each carrier base 5, each inserts an intrinsic hydraulic prop 6 upper and lower surface of each carrier base 5, is connected with crossbeam 7 between two hydraulic prop 6 tops of carrier base 5 tops; Slide rail 1 front end is fixed with anchor pole and beats notes support 8, anchor pole is beaten notes support 8 and is comprised two rail chair I 9 that are enclosed within respectively on the slide rail 1 inner orbit groove 17, two rail chair I 9 inboards are vertically fixed a hydraulic jack 10 respectively, be connected with anchor pole between two hydraulic jack 10 tops and beat notes crossbeam 11, anchor pole is beaten to annotate on the crossbeam 11 and is laid with some anchor pole head installation chassis 12; Be horizontally disposed with some forestopes 13 on the crossbeam 7 of portal trestle I 2, be with the rail chair II 14 of fixing on the slide rail 1 inner orbit groove 17 with the slide block 16 of portal trestle III 4, be connected with between rail chair I 9 and the rail chair II 14 and promote hydraulic jack 15, be releasable connection between the slide block 16 of rail chair I 9 and portal trestle I 2.
In the specific embodiment:
The medial surface of slide block 16 has U-lag III 30, and the upper and lower end face of slide block 16U shape groove III 30 is provided with the projection 23 that is stuck on the slide rail 1 outside track groove 18; The upper and lower end face of the U type groove II 29 of rail chair I 9, rail chair II 14 is provided with the projection 23 that is stuck on the slide rail 1 inner orbit groove 17.Compare those skilled in the art thinkable slide block 16, rail chair I 9, rail chair II 14 be enclosed within the structure on the slide rail 1, this structure is more simple effectively.
Rail chair I 9 medial surfaces are provided with the hydraulic oil cylinder sleeve 27 that is used for fixing hydraulic jack 10.The difference of rail chair I and rail chair II is to add hydraulic oil cylinder sleeve 27.Convenient unified the manufacturing and being connected and fixed between hydraulic jack 10 and the rail chair I 9 of being more convenient for of this structure.
The crossbeam 7 and the forestope 13 of portal trestle I 2 are to be slidingly connected; Anchor pole is beaten and annotated crossbeam 11 is to be slidingly connected with anchor pole head installation chassis 12.The realization that is slidingly connected can be multiple mode, and this helps changing the layout quantity and the position of forestope 13 and anchor pole head installation chassis 12.Adopt three forestopes 13 and five anchor pole head installation chassis 12 in the present embodiment.
Rail chair I 9, rail chair II 14 upper surfaces are provided with the fixing ears draw-in groove 26 that promotes hydraulic jack 15, promote hydraulic jack 15 ends and are provided with the monaural draw-in groove that snaps in the ears draw-in groove 26, are inserted with pin between ears draw-in groove 26 and the monaural draw-in groove.Compare those skilled in the art the fixed structure at thinkable promotion hydraulic jack 15 two ends, this structure is more simple effectively.
The upper surface of rail chair I 9, rail chair II 14 has pin-and-hole III 28, slide block 16 upper surfaces of portal trestle I 2 have the pin-and-hole II 24 corresponding with pin-and-hole III 28 positions of rail chair I 9 upper surfaces, slide block 16 upper surfaces of portal trestle II 3 have the pin-and-hole II 24 corresponding with pin-and-hole III 28 positions of rail chair II 14 upper surfaces, and pin-and-hole II 24 is inserted with pin with pin-and-hole III 28.Portal trestle II 3 realizes being connected and fixed by this mode with rail chair II 14.And pin can be extracted insertion at any time, and portal trestle I 2 realizes releasable connection with rail chair I 9, and this structure is more simple and convenient.
The course of work is as follows:
The first step, the hydraulic prop elongation of portal trestle II 3, portal trestle III 4, support the tunnel roof and floor, pin between the slide block 16 of insertion rail chair I 9 and portal trestle I 2, the hydraulic prop 6 of portal trestle I 2 shortens, promote hydraulic jack 15 elongations, drive portal trestle I 2 and anchor pole and play 8 reaches of notes support.After reach put in place, hydraulic prop 6 elongate support of portal trestle I 2 were lived roof and floor.
In second step, the hydraulic prop 6 of portal trestle III 4 shortens, and promotes hydraulic jack 15 and shortens, and drives 4 reaches of portal trestle III.
The 3rd step, extract the pin between the slide block 16 of rail chair I 9 and portal trestle I 2, the hydraulic prop 6 of portal trestle II 3 shortens, and promotes hydraulic jack 15 elongations, drives anchor pole and beats and annotate support 8 and portal trestle II 3 moves forward.After reach puts in place, hydraulic prop 6 elongate support of portal trestle II 3 are lived the tunnel roof and floor, hydraulic jack 10 elongation drives the anchor pole that installs drill bit and beats and annotate crossbeam 11 and rise and put in place, rig rotates beats the anchor eye, anchor pole is beaten and is annotated crossbeam 11 declines, the anchor pole of packing into, anchor pole are beaten and are annotated crossbeam 11 and rise to beat and annotate first and arrange anchor pole.Beat annotating the back anchor pole that finishes beats and annotates crossbeam 11 and descend, the drill bit that changes the outfit promotes hydraulic jack 15 and shortens and drive anchor poles and beat and annotate support 8 and reach second row's anchor pole position, and anchor pole is beaten and annotated crossbeam 11 and rise, rig rotates makes a call to second row's anchor eye, and the anchor pole that changes the outfit is then beaten and annotated second row's anchor pole.
In the 4th step, the hydraulic jack 10 that anchor pole is beaten notes support 8 shortens, and promotion hydraulic jack 15 continues to shorten makes anchor pole beat notes support 8 and portal trestle I 2 arrival same positions.A working cycles finishes then, enters headwork circulation next time.
Claims (8)
1. a roadway is dug the advance support integration unit soon, it is characterized in that: comprise two slide rails that are set up in parallel (1), every one slide rail (1) is provided with inner orbit groove (17), (18) two rail grooves side by side of outside track groove; Portal trestle I (2), portal trestle II (3), (4) three door shaped stents of portal trestle III have been arranged in juxtaposition on the slide rail (1) from front to back, each portal trestle comprises two carrier bases (5), be fixed with a slide block (16) that is enclosed within on slide rail (1) the outside track groove (18) on each carrier base (5), each inserts an intrinsic hydraulic prop (6) upper and lower surface of each carrier base (5), is connected with crossbeam (7) between two hydraulic props (6) top of carrier base (5) top; Slide rail (1) front end is fixed with anchor pole and beats notes support (8), anchor pole is beaten notes supports (8) and is comprised two rail chair I (9) that are enclosed within respectively on slide rail (1) the inner orbit groove (17), two rail chair I (9) inboard is vertically fixed a hydraulic jack (10) respectively, be connected with anchor pole between two hydraulic jacks (10) top and beat notes crossbeam (11), anchor pole is beaten to annotate on the crossbeams (11) and is laid with some anchor pole head installation chassis (12); Be horizontally disposed with some forestopes (13) on the crossbeam (7) of portal trestle I (2), be with on slide rail (1) the inner orbit groove (17) and the fixing rail chair II (14) of the slide block (16) of portal trestle III (4), be connected with between rail chair I (9) and the rail chair II (14) and promote hydraulic jack (15), be releasable connection between the slide block (16) of rail chair I (9) and portal trestle I (2).
2. roadway according to claim 1 is dug the advance support integration unit soon, it is characterized in that: carrier base (5) upper and lower surface has hydraulic prop jack (20), carrier base (5) left and right sides sidewall has the pin-and-hole I (19) that communicates with hydraulic prop jack (20), the end of hydraulic prop (6) has the through hole that matches with pin-and-hole I (19) on the sidewall of carrier base (5) left and right sides, is inserted with pin rod between through hole and the pin-and-hole I (19).
3. roadway according to claim 1 and 2 is dug the advance support integration unit soon, it is characterized in that: carrier base (5) medial surface has the U type groove I (21) that is stuck in slide block (16) upper and lower surface and lateral surface, carrier base (5) lateral surface has pilot hole I (22), slide block (16) lateral surface have with carrier base (5) on the corresponding pilot hole II (25) in pilot hole I (22) position, be inserted with in pilot hole II (25) and the pilot hole I (22) and be connected bearing pin; Rail chair I (9), rail chair II (14) outside are provided with the U type groove II (29) that is stuck in slide block (16) upper and lower surface and medial surface.
4. roadway according to claim 3 is dug the advance support integration unit soon, it is characterized in that: the medial surface of slide block (16) has U-lag III (30), and the upper and lower end face of slide block (16) U-lag III (30) is provided with the projection (23) that is stuck on slide rail (1) the outside track groove (18); The upper and lower end face of the U type groove II (29) of rail chair I (9), rail chair II (14) is provided with the projection (23) that is stuck on slide rail (1) the inner orbit groove (17).
5. roadway according to claim 1 is dug the advance support integration unit soon, it is characterized in that: rail chair I (9) medial surface is provided with the hydraulic oil cylinder sleeve (27) that is used for fixing hydraulic jack (10).
6. roadway according to claim 1 is dug the advance support integration unit soon, it is characterized in that: the crossbeam (7) of portal trestle I (2) is to be slidingly connected with forestope (13); Anchor pole is beaten and annotated crossbeam (11) is to be slidingly connected with anchor pole head installation chassis (12).
7. roadway according to claim 1 is dug the advance support integration unit soon, it is characterized in that: rail chair I (9), rail chair II (14) upper surface are provided with the fixing ears draw-in groove (26) that promotes hydraulic jack (15), promote hydraulic jack (15) end and be provided with the monaural draw-in groove that snaps in the ears draw-in groove (26), be inserted with pin between ears draw-in groove (26) and the monaural draw-in groove.
8. roadway according to claim 3 is dug the advance support integration unit soon, it is characterized in that: the upper surface of rail chair I (9), rail chair II (14) has pin-and-hole III (28), slide block (16) upper surface of portal trestle I (2) has the pin-and-hole II (24) corresponding with pin-and-hole III (28) position of rail chair I (9) upper surface, slide block (16) upper surface of portal trestle II (3) has the pin-and-hole II (24) corresponding with pin-and-hole III (28) position of rail chair II (14) upper surface, and pin-and-hole II (24) is inserted with pin with pin-and-hole III (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202059548U CN202090874U (en) | 2011-06-18 | 2011-06-18 | Integrated advance support device for mine speedy drivage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202059548U CN202090874U (en) | 2011-06-18 | 2011-06-18 | Integrated advance support device for mine speedy drivage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202090874U true CN202090874U (en) | 2011-12-28 |
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ID=45365947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202059548U Expired - Lifetime CN202090874U (en) | 2011-06-18 | 2011-06-18 | Integrated advance support device for mine speedy drivage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202090874U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322281A (en) * | 2011-06-18 | 2012-01-18 | 张春生 | Tunnel quick-tunneling advance support integrated device |
| CN103993899A (en) * | 2014-05-30 | 2014-08-20 | 山西东华机械有限公司 | Anchor rod supporting support |
| CN106771050A (en) * | 2016-11-15 | 2017-05-31 | 重庆大学 | The three-dimensional analog simulation experiment excavation system support system of three-dimensional loading |
-
2011
- 2011-06-18 CN CN2011202059548U patent/CN202090874U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322281A (en) * | 2011-06-18 | 2012-01-18 | 张春生 | Tunnel quick-tunneling advance support integrated device |
| CN103993899A (en) * | 2014-05-30 | 2014-08-20 | 山西东华机械有限公司 | Anchor rod supporting support |
| CN106771050A (en) * | 2016-11-15 | 2017-05-31 | 重庆大学 | The three-dimensional analog simulation experiment excavation system support system of three-dimensional loading |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20111228 Effective date of abandoning: 20130403 |
|
| RGAV | Abandon patent right to avoid regrant |