CN203687798U - Tunnel blasting and excavating construction vehicle - Google Patents
Tunnel blasting and excavating construction vehicle Download PDFInfo
- Publication number
- CN203687798U CN203687798U CN201320785297.8U CN201320785297U CN203687798U CN 203687798 U CN203687798 U CN 203687798U CN 201320785297 U CN201320785297 U CN 201320785297U CN 203687798 U CN203687798 U CN 203687798U
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Abstract
The utility model discloses a tunnel blasting and excavating construction vehicle. The tunnel blasting and excavating construction vehicle comprises a vehicle frame, a plurality of travelling wheels mounted at the bottom of the vehicle frame, a round return board mounted on the vehicle frame and arranged in the horizontal direction, a fixing shaft mounted on the vehicle frame and arranged in the vertical direction, a rock drilling and blasting machine frame mounted above the vehicle frame, and two hydraulic cylinders used for driving the rock drilling blast machine frame to perform leftward and rightward rotation in the horizontal plane, wherein the rock drilling blast machine frame comprises a horizontal rotation base arranged on the round return board and capable of performing leftward and rightward rotation in the horizontal plane along the fixing shaft; a vertical pillar arranged on the horizontal rotation base, a horizontal rotation shaft arranged on the vertical pillar, and a blast hole drilling and automatic gunpowder adding disc positioned above the horizontal rotation base. The tunnel blasting and excavating construction vehicle is simple in structure, reasonable in design, convenient to wire, simple and convenient in use and operation, and good in use effect, can automatically accomplish drilling of a plurality of blast holes distributed in the circumference and adding of gunpowder, and is convenient to adjust the location of the blast hole drilling and gunpowder adding.
Description
Technical field
The utility model belongs to tunnel blasting excavation technical field of construction, especially relates to a kind of tunnel blasting excavation work car.
Background technology
In tunnel excavation work progress, mostly all need first carrying out blast working, wherein driling explosion construction is a kind of important Tunnel Blasting construction method.Actual carrying out, often need to be offered and be multiple big guns hole that hoop is laid at driling explosion when construction on explosion face, puts into each big gun hole after configuring the blasting charge more afterwards, and then ignites, thereby complete blast working according to the blasting parameter of design in advance.Nowadays, carry out explosion treatment in tunnel excavation work progress time, generally all first adopt survey tool to determine the position, hole in each big gun hole, afterwards again by manually adopting rig or the equipment of punchinging is offered one by one big gun hole on country rock; And after big gun hole has been offered, then by manually the blasting charge of making in advance being thrown in each big gun hole, thereby need the manpower and materials of input larger, and spended time is longer, affects the constructing tunnel cycle.To sum up, nowadays lack a kind of simple in structure, reasonable in design, install and lay convenient and use tunnel blasting excavation work car easy and simple to handle, that result of use is good, can automatically complete be hoop lay multiple blasthole drillings get and explosive launch process, and the big gun hole that drills through and the explosive position of throwing in easy to adjust, increase substantially blast working efficiency, saved the engineering time.
Utility model content
Technical problem to be solved in the utility model is for above-mentioned deficiency of the prior art, a kind of tunnel blasting excavation work car is provided, it is simple in structure, reasonable in design, easy-to-connect and use easy and simple to handle, result of use good, can automatically complete and be multiple blasthole drillings that hoop lays and get and explosive launch process, and institute drills through big gun hole and explosive placement position is easy to adjust.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of tunnel blasting excavation work car, it is characterized in that: comprise vehicle frame, be arranged on multiple road wheels of bottom of frame, be arranged on vehicle frame and be level to the circular slide plate of laying, be arranged on vehicle frame and be vertically to the fixed axis of laying, be installed on driling explosion frame and two hydraulic cylinders that drive described driling explosion frame to carry out left-right rotation on horizontal plane of vehicle frame top, two described hydraulic cylinders are respectively the left side hydraulic cylinder that is laid in described driling explosion frame left side and the right side hydraulic cylinder that is laid in described driling explosion frame right side,
Described driling explosion frame comprises the horizontal rotating chassis that is laid on circular slide plate and can carries out along fixed axis left-right rotation on horizontal plane, be arranged on the vertical upright column on horizontal rotating chassis, the horizontal rotating shaft being arranged on vertical upright column is got and automatic chemical dosing disk with the blasthole drilling that is positioned at horizontal rotating chassis top, described blasthole drilling is got with automatic chemical dosing disk and is comprised the rotatable disc and the multiple round ring boss that is installed in rotatable disc front portion that are coaxially arranged on horizontal rotating shaft and can carry out around horizontal rotating shaft left-right rotation, multiple arc bottom bases of along the circumferential direction laying are all installed on each round ring boss, on each described arc bottom base, be all provided with one for drilling through the electrodrill in big gun hole and one for throwing in the blasting charge throwing mechanism of the blasting charge in drilled through big gun hole, described electrodrill is all laid on the center line of installed arc bottom base in blasting charge throwing mechanism left side and the two, described blasting charge throwing mechanism comprises the blasting charge input pedestal being arranged on arc bottom base, described blasting charge input pedestal middle part has and is level to the input hole of laying, in described input hole, multiple blastings charge of laying are from front to back housed and its rear portion is provided with horizontal push, described input hole is circular hole, described horizontal push is the cylindrical straight-bar that diameter is identical with the internal diameter of throwing in hole, on described rotatable disc, round ring boss, arc bottom base and blasting charge input pedestal, all has the manhole passing for described horizontal push, described rotatable disc is vertically to laying, on described horizontal rotating chassis, be provided with and drive rotatable disc to carry out the rotating mechanism of left-right rotation, described rotating mechanism comprises the left side telescopic hydraulic cylinder that is positioned at rotatable disc left side and the right side telescopic hydraulic cylinder that is positioned at rotatable disc right side, left side bearing one and right side bearing one are installed on described horizontal rotating chassis, between the cylinder base of described left side telescopic hydraulic cylinder and left side bearing one, be connected in hinged way, between the cylinder base of described right side telescopic hydraulic cylinder and right side bearing one, be connected in hinged way, on the left side wall of described rotatable disc, be provided with on left side bearing two and its right side wall right side bearing two is installed, between the piston rod upper end of described left side telescopic hydraulic cylinder and left side bearing two, be connected in hinged way, between the piston rod upper end of described right side telescopic hydraulic cylinder and right side bearing two, be connected in hinged way, the dead astern of described rotatable disc is provided with one and can moves forward and backward and can be to the rear side discs that in each input hole, the horizontal push that fills promotes, described rear side discs is vertically to laying and it is arranged on horizontal sliding bearing, and the sliding rail of slippage before and after carrying out for horizontal sliding bearing is installed on described horizontal rotating chassis, described horizontal rotating chassis, circular slide plate and fixed axis are all coaxial laying, and described horizontal rotating chassis and middle part have circular slide plate middle part and all have the installing hole passing for fixed axis, between described horizontal rotating chassis and fixed axis, are connected by bearing,
Described vehicle frame upper left-hand is provided with reaction support one and its upper right is provided with reaction support two, and described reaction support one and reaction support two are all vertically to laying; Described horizontal rotating chassis is cup dolly, on the left side wall of described cup dolly, be provided with on left side push pedal and its right side wall right side push pedal is installed, the push pedal of described left side and right side push pedal are symmetrical laying, and described reaction support one, reaction support two, left side push pedal and right side push pedal are all parallel laying; Described reaction support one be positioned at left side push pedal front side, the cylinder body rear portion of described left side hydraulic cylinder prop up withstand on reaction support one and its piston rod front end prop up withstand on left side push pedal on; Described reaction support two is positioned at right side push pedal rear side, and the cylinder body rear portion of described right side hydraulic cylinder is propped up and withstood on reaction support two and its piston rod front end props up and withstands in the push pedal of right side.
Above-mentioned a kind of tunnel blasting excavation work car, is characterized in that: the diameter of described circular slide plate is not less than the diameter of horizontal rotating chassis.
Above-mentioned a kind of tunnel blasting excavation work car, is characterized in that: described arc bottom base is arranged on round ring boss by two connecting pins, has multiple pin-and-holes of installing for connecting pin on described round ring boss.
Above-mentioned a kind of tunnel blasting excavation work car, is characterized in that: the Level Promoting mechanism that promotion horizontal sliding bearing carries out front and back slippage is installed on described horizontal rotating chassis.
The utility model compared with prior art has the following advantages:
1, simple in structure, conveniently moving and processing and fabricating and installing laid conveniently, and input cost is low.
2, use simple to operate, result of use good and practical value is high, can in institute's construction tunnel hole, move forward and backward, can automatically complete simultaneously and be multiple blasthole drillings that hoop lays and get and explosive launch process, and the institute big gun hole that drills through and explosive placement position are easy to adjust, increase substantially blast working efficiency, saved the engineering time.
In sum, the utility model is simple in structure, reasonable in design, easy-to-connect and use easy and simple to handle, result of use good, can automatically complete and be multiple blasthole drillings that hoop lays and get and explosive launch process, and institute drills through big gun hole and explosive placement position is easy to adjust.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of side discs after the utility model.
Fig. 3 is the use state reference map of the utility model horizontal rotating chassis.
Fig. 4 is the structural representation of the utility model arc bottom base.
Description of reference numerals:
1-horizontal rotating chassis; 2-vertical upright column; 3-horizontal rotating shaft;
4-rotatable disc; 5-round ring boss; 6-1-left side telescopic hydraulic cylinder;
6-2-right side telescopic hydraulic cylinder; 7-1-left side bearing one; 7-2-right side bearing one;
8-1-left side bearing two; 8-2-right side bearing two; 9-sliding rail;
10-1-arc bottom base; 10-2-blasting charge is thrown in pedestal;
10-3-input hole; 11-electrodrill; 12-blasting charge throwing mechanism;
13-horizontal sliding bearing; 16-connecting pin; 17-pin-and-hole;
18-rear side discs; 19-vehicle frame; 20-circular slide plate;
21-fixed axis; 22-1-left side hydraulic cylinder; 22-2-right side hydraulic cylinder;
23-1-reaction support one; 23-2-reaction support two; The push pedal of 24-1-left side;
The push pedal of 24-2-right side; 25-road wheel.
Detailed description of the invention
As Fig. 1, Fig. 2, shown in Fig. 3 and Fig. 4, the utility model comprises vehicle frame 19, be arranged on multiple road wheels 25 of vehicle frame 19 bottoms, be arranged on vehicle frame 19 and be level to the circular slide plate 20 of laying, be arranged on vehicle frame 19 and be vertically to the fixed axis 21 of laying, be installed on driling explosion frame and two hydraulic cylinders that drive described driling explosion frame to carry out left-right rotation on horizontal plane of vehicle frame 19 tops, two described hydraulic cylinders are respectively the left side hydraulic cylinder 22-1 that is laid in described driling explosion frame left side and the right side hydraulic cylinder 22-2 that is laid in described driling explosion frame right side.
Described driling explosion frame comprises the horizontal rotating chassis 1 that is laid on circular slide plate 20 and can carries out along fixed axis 21 left-right rotation on horizontal plane, be arranged on the vertical upright column 2 on horizontal rotating chassis 1, the horizontal rotating shaft 3 being arranged on vertical upright column 2 is got and automatic chemical dosing disk with the blasthole drilling that is positioned at horizontal rotating chassis 1 top, described blasthole drilling is got with automatic chemical dosing disk and is comprised the rotatable disc 4 and the multiple round ring boss 5 that is installed in rotatable disc 4 front portions that are coaxially arranged on horizontal rotating shaft 3 and can carry out around horizontal rotating shaft 3 left-right rotation, multiple arc bottom base 10-1 that along the circumferential direction lay are all installed on each round ring boss 5, on each described arc bottom base 10-1, be all provided with one for drilling through the electrodrill 11 in big gun hole and one for throwing in the blasting charge throwing mechanism 12 of the blasting charge in drilled through big gun hole, described electrodrill 11 is positioned at blasting charge throwing mechanism 12 left sides and the two is all laid on the center line of installed arc bottom base 10-1.Described blasting charge throwing mechanism 12 comprises the blasting charge input pedestal 10-2 being arranged on arc bottom base 10-1, described blasting charge input pedestal 10-2 middle part has and is level to the input hole 10-3 laying, in described input hole 10-3, multiple blastings charge of laying are from front to back housed and its rear portion is provided with horizontal push, described input hole 10-3 is circular hole, described horizontal push is the cylindrical straight-bar that diameter is identical with the internal diameter of throwing in hole 10-3, described rotatable disc 4, round ring boss 5, on arc bottom base 10-1 and blasting charge input pedestal 10-2, all have the manhole passing for described horizontal push, described rotatable disc 4 is vertically to laying, on described horizontal rotating chassis 1, be provided with and drive rotatable disc 4 to carry out the rotating mechanism of left-right rotation, described rotating mechanism comprises the left side telescopic hydraulic cylinder 6-1 that is positioned at rotatable disc 4 left sides and the right side telescopic hydraulic cylinder 6-2 that is positioned at rotatable disc 4 right sides, left side bearing one 7-1 and right side bearing one 7-2 are installed on described horizontal rotating chassis 1, between the cylinder base of described left side telescopic hydraulic cylinder 6-1 and left side bearing one 7-1, be connected in hinged way, between the cylinder base of described right side telescopic hydraulic cylinder 6-2 and right side bearing one 7-2, be connected in hinged way, on the left side wall of described rotatable disc 4, be provided with on left side bearing two 8-1 and its right side wall bearing two 8-2 in right side are installed, between the piston rod upper end of described left side telescopic hydraulic cylinder 6-1 and left side bearing two 8-1, be connected in hinged way, between the piston rod upper end of described right side telescopic hydraulic cylinder 6-2 and right side bearing two 8-2, be connected in hinged way.The dead astern of described rotatable disc 4 is provided with one and can moves forward and backward and can be to the rear side discs 18 that in each input hole 10-3, the horizontal push that fills promotes, described rear side discs 18 is vertically to laying and it is arranged on horizontal sliding bearing 13, and the sliding rail 9 of slippage before and after carrying out for horizontal sliding bearing 13 is installed on described horizontal rotating chassis 1; Described horizontal rotating chassis 1, circular slide plate 20 and fixed axis 21 are all coaxial laying, described horizontal rotating chassis 1 and middle part have circular slide plate 20 middle parts and all have the installing hole passing for fixed axis 21, between described horizontal rotating chassis 1 and fixed axis 21, are connected by bearing.
Described vehicle frame 19 upper left-hand are provided with reaction support one 23-1 and its upper right is provided with reaction support two 23-2, and described reaction support one 23-1 and reaction support two 23-2 are all vertically to laying.Described horizontal rotating chassis 1 is cup dolly, on the left side wall of described cup dolly, be provided with on left side push pedal 24-1 and its right side wall push pedal 24-2 in right side is installed, described left side push pedal 24-1 and right side push pedal 24-2 are symmetrical laying, and described reaction support one 23-1, reaction support two 23-2, left side push pedal 24-1 and right side push pedal 24-2 are all parallel laying.Described reaction support one 23-1 is positioned at push pedal 24-1 front side, left side, and the cylinder body rear portion of described left side hydraulic cylinder 22-1 is propped up and withstood on upper and its piston rod front end of reaction support one 23-1 and prop up and withstand on left side push pedal 24-1; Described reaction support two 23-2 are positioned at right side push pedal 24-2 rear side, and the cylinder body rear portion of described right side hydraulic cylinder 22-2 is propped up and withstood on upper and its piston rod front end of reaction support two 23-2 and prop up and withstand on right side push pedal 24-2.
In the present embodiment, the diameter of described circular slide plate 20 is not less than the diameter of horizontal rotating chassis 1.
When actual installation, described arc bottom base 10-1 is arranged on round ring boss 5 by two connecting pins 16, has multiple pin-and-holes 17 of installing for connecting pin 16 on described round ring boss 5.
In the present embodiment, the Level Promoting mechanism that promotion horizontal sliding bearing 13 carries out front and back slippage is installed on described horizontal rotating chassis 1.
The above; it is only preferred embodiment of the present utility model; not the utility model is imposed any restrictions; every any simple modification of above embodiment being done according to the utility model technical spirit, change and equivalent structure change, and all still belong in the protection domain of technical solutions of the utility model.
Claims (4)
1. a tunnel blasting excavation work car, it is characterized in that: comprise vehicle frame (19), be arranged on multiple road wheels (25) of vehicle frame (19) bottom, be arranged on vehicle frame (19) and be level to the circular slide plate (20) of laying, be arranged on vehicle frame (19) and be vertically to the fixed axis (21) of laying, be installed on driling explosion frame and two hydraulic cylinders that drive described driling explosion frame to carry out left-right rotation on horizontal plane of vehicle frame (19) top, two described hydraulic cylinders are respectively the left side hydraulic cylinder (22-1) that is laid in described driling explosion frame left side and the right side hydraulic cylinder (22-2) that is laid in described driling explosion frame right side,
Described driling explosion frame comprises the horizontal rotating chassis (1) that is laid in circular slide plate (20) above and can carries out along fixed axis (21) left-right rotation on horizontal plane, be arranged on the vertical upright column (2) on horizontal rotating chassis (1), the blasthole drilling that is arranged on the horizontal rotating shaft (3) on vertical upright column (2) and is positioned at horizontal rotating chassis (1) top is got and automatic chemical dosing disk, described blasthole drilling is got with automatic chemical dosing disk and is comprised the rotatable disc (4) and the multiple anterior round ring boss (5) of rotatable disc (4) that is installed in that are coaxially arranged on horizontal rotating shaft (3) above and can carry out around horizontal rotating shaft (3) left-right rotation, multiple arc bottom bases of along the circumferential direction laying (10-1) are all installed on each round ring boss (5), on each described arc bottom base (10-1), be all provided with one for drilling through the electrodrill (11) in big gun hole and one for throwing in the blasting charge throwing mechanism (12) of the blasting charge in drilled through big gun hole, described electrodrill (11) is positioned at blasting charge throwing mechanism (12) left side and the two is all laid on the center line of installed arc bottom base (10-1), described blasting charge throwing mechanism (12) comprises the blasting charge input pedestal (10-2) being arranged on arc bottom base (10-1), described blasting charge input pedestal (10-2) middle part has and is level to the input hole (10-3) of laying, in described input hole (10-3), multiple blastings charge of laying are from front to back housed and its rear portion is provided with horizontal push, described input hole (10-3) is circular hole, described horizontal push is the cylindrical straight-bar that diameter is identical with the internal diameter of throwing in hole (10-3), described rotatable disc (4), round ring boss (5), on arc bottom base (10-1) and blasting charge input pedestal (10-2), all have the manhole passing for described horizontal push, described rotatable disc (4) is vertically to laying, on described horizontal rotating chassis (1), be provided with and drive rotatable disc (4) to carry out the rotating mechanism of left-right rotation, described rotating mechanism comprises the left side telescopic hydraulic cylinder (6-1) that is positioned at rotatable disc (4) left side and the right side telescopic hydraulic cylinder (6-2) that is positioned at rotatable disc (4) right side, left side bearing one (7-1) and right side bearing one (7-2) are installed on described horizontal rotating chassis (1), between the cylinder base of described left side telescopic hydraulic cylinder (6-1) and left side bearing one (7-1), be connected in hinged way, between the cylinder base of described right side telescopic hydraulic cylinder (6-2) and right side bearing one (7-2), be connected in hinged way, on the left side wall of described rotatable disc (4), be provided with on left side bearing two (8-1) and its right side wall right side bearing two (8-2) is installed, between the piston rod upper end of described left side telescopic hydraulic cylinder (6-1) and left side bearing two (8-1), be connected in hinged way, between the piston rod upper end of described right side telescopic hydraulic cylinder (6-2) and right side bearing two (8-2), be connected in hinged way, the dead astern of described rotatable disc (4) is provided with a rear side discs (18) that can move forward and backward and can promote the horizontal push that fills in each input hole (10-3), described rear side discs (18) be vertically to lay and its to be arranged on horizontal sliding bearing (13) upper, the sliding rail (9) of slippage before and after carrying out for horizontal sliding bearing (13) is installed on described horizontal rotating chassis (1), described horizontal rotating chassis (1), circular slide plate (20) and fixed axis (21) are all coaxial laying, described horizontal rotating chassis (1) and middle part have circular slide plate (20) middle part and all have the installing hole passing for fixed axis (21), between described horizontal rotating chassis (1) and fixed axis (21), are connected by bearing,
Described vehicle frame (19) upper left-hand is provided with reaction support one (23-1) and its upper right is provided with reaction support two (23-2), and described reaction support one (23-1) and reaction support two (23-2) are all vertically to laying; Described horizontal rotating chassis (1) is cup dolly, on the left side wall of described cup dolly, be provided with on left side push pedal (24-1) and its right side wall right side push pedal (24-2) is installed, described left side push pedal (24-1) and right side push pedal (24-2) are symmetrical laying, and described reaction support one (23-1), reaction support two (23-2), left side push pedal (24-1) and right side push pedal (24-2) are all parallel laying; Described reaction support one (23-1) is positioned at push pedal (24-1) front side, left side, and the cylinder body rear portion of described left side hydraulic cylinder (22-1) is propped up and withstood on upper and its piston rod front end of reaction support one (23-1) and prop up and withstand in left side push pedal (24-1); Described reaction support two (23-2) is positioned at right side push pedal (24-2) rear side, and the cylinder body rear portion of described right side hydraulic cylinder (22-2) is propped up and withstood on upper and its piston rod front end of reaction support two (23-2) and prop up and withstand in right side push pedal (24-2).
2. according to a kind of tunnel blasting excavation work car claimed in claim 1, it is characterized in that: the diameter of described circular slide plate (20) is not less than the diameter of horizontal rotating chassis (1).
3. according to a kind of tunnel blasting excavation work car described in claim 1 or 2, it is characterized in that: it is upper that described arc bottom base (10-1) is arranged on round ring boss (5) by two connecting pins (16), on described round ring boss (5), have multiple pin-and-holes (17) of installing for connecting pin (16).
4. according to a kind of tunnel blasting excavation work car described in claim 1 or 2, it is characterized in that: on described horizontal rotating chassis (1), be provided with promote horizontal sliding bearing (13) carry out before and after the Level Promoting mechanism of slippage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320785297.8U CN203687798U (en) | 2013-11-30 | 2013-11-30 | Tunnel blasting and excavating construction vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320785297.8U CN203687798U (en) | 2013-11-30 | 2013-11-30 | Tunnel blasting and excavating construction vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203687798U true CN203687798U (en) | 2014-07-02 |
Family
ID=51009685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320785297.8U Expired - Fee Related CN203687798U (en) | 2013-11-30 | 2013-11-30 | Tunnel blasting and excavating construction vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203687798U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104990467A (en) * | 2015-05-22 | 2015-10-21 | 深圳市工勘岩土集团有限公司 | Digging pile hard rock section combined construction method |
| CN107923243A (en) * | 2015-07-28 | 2018-04-17 | 安德烈·范·戴克 | Tunnel excavator |
| CN112146529A (en) * | 2020-09-25 | 2020-12-29 | 华东交通大学 | Rock drill directional control device for tunnel blasting construction and use method thereof |
| CN112781454A (en) * | 2020-12-31 | 2021-05-11 | 丁连锁 | Bridge pile blasting detonator installation robot |
-
2013
- 2013-11-30 CN CN201320785297.8U patent/CN203687798U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104990467A (en) * | 2015-05-22 | 2015-10-21 | 深圳市工勘岩土集团有限公司 | Digging pile hard rock section combined construction method |
| CN107923243A (en) * | 2015-07-28 | 2018-04-17 | 安德烈·范·戴克 | Tunnel excavator |
| CN112146529A (en) * | 2020-09-25 | 2020-12-29 | 华东交通大学 | Rock drill directional control device for tunnel blasting construction and use method thereof |
| CN112146529B (en) * | 2020-09-25 | 2022-09-16 | 华东交通大学 | Rock drill directional control device for tunnel blasting construction and use method thereof |
| CN112781454A (en) * | 2020-12-31 | 2021-05-11 | 丁连锁 | Bridge pile blasting detonator installation robot |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20141130 |
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| EXPY | Termination of patent right or utility model |