CN202066435U - Mechanical explosive loading truck for finished product explosives - Google Patents
Mechanical explosive loading truck for finished product explosives Download PDFInfo
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- CN202066435U CN202066435U CN2011200156505U CN201120015650U CN202066435U CN 202066435 U CN202066435 U CN 202066435U CN 2011200156505 U CN2011200156505 U CN 2011200156505U CN 201120015650 U CN201120015650 U CN 201120015650U CN 202066435 U CN202066435 U CN 202066435U
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Abstract
The utility model discloses a mechanical explosive loading truck for finished product explosives, which relates to blasting engineering machinery, and solves the problems of high labor intensity, low efficiency and poor operation safety of manual charging. In the mechanical explosive loading truck, a secondary frame is mounted at the upper part of a truck chassis; a brake cooling system is mounted at the lower part of the truck chassis; a box body assembly is mounted on the secondary frame; and a gas circuit assembly, a hydraulic control system, a power output system, a vehicle-mounted electrical apparatus control system, a spiral assembly, an explosive loading machine assembly and a hose reel device are mounted in the box body assembly. The mechanical explosive loading truck is suitable for a working plane of which the blasting environment is harsh and the blasting site is difficult to realize filling of a blasthole by large-scale mechanical equipment. The transportation of the finished product explosives and the filling of the explosive site are combined, thereby improving the safety. The full automatic control on the whole filling process of the blasthole is realized. The mechanical explosive loading truck is simple and reliable to operate, and has high efficiency and excellent blasting effect.
Description
Technical field
The utility model relates to blasting engineering machinery, remote transportation of particularly a kind of finished product explosive and on-the-spot mechanized charging car.
Background technology
At present, the finished product explosive that blasting engineerings such as domestic surface mine, stone pit, tunnel use still adopts and manually explosive is transported to position, big gun hole, reinstalls the manual loading method in big gun hole.This powder charge process poor stability, efficient are low, the explosive payload error big, the powder charge contingency is poor, demolition effect instability, blasting cost height.
Summary of the invention
The utility model is in order to overcome the shortcoming of prior art, a kind of mechanized charging car of finished product explosive to be provided, and solves that manual charging's labour intensity is big, efficient is low, operational security is poor, the demolition effect problem of unstable.
The utility model is achieved through the following technical solutions:
A kind of mechanized charging car of finished product explosive, comprise: automobile chassis, it is characterized in that: the secondary vehicle frame is installed on described automobile chassis top, the brake cooling system is installed in described automobile chassis bottom, on described secondary vehicle frame, the casing assembly is housed, gas circuit assembly, hydraulic control system, power output system, vehicle mounted electrical apparatus control system, spiral assembly, explosive loader assembly, hose reel device are housed in described casing assembly.
Described brake cooling system comprises: storage tank, water spout, air pressure regulator valve, the ball valve of pouring water, air inlet ball valve, water spray ball valve, described air inlet ball valve is installed in Automobile air and wraps, described air pressure regulator valve and the described ball valve of pouring water are installed on the described storage tank, described water spout is installed in the automotive wheel top, it is indoor that described water spray ball valve is installed in car steering, connects by rubber hose between each part.
Described gas circuit assembly comprises: air compressor, air inlet ball valve, gas circuit pressure regulator valve, magnetic valve, loading pressure regulator valve, Pressure gauge, pneumatic ball valve, automobile gas bag, pressure sensor, described air compressor is installed in described casing assembly front portion, described air inlet ball valve is installed in Automobile air and wraps, described gas circuit pressure regulator valve, magnetic valve are installed in described casing assembly side, described loading pressure regulator valve, Pressure gauge, pneumatic ball valve, pressure sensor are installed on the described explosive loader assembly, connect by rubber hose between each part.
Described hydraulic control system comprises: power takeoff, hydraulic variable displacement pump, choke valve, hydralic pressure gauge, inclined screw hydraulic motor, horizontal screw hydraulic motor, radiator hydraulic motor, air compressor machine hydraulic motor, agitator hydraulic motor, described power takeoff directly is connected with described hydraulic variable displacement pump, and described hydraulic variable displacement pump is connected by rubber hose with described choke valve, hydralic pressure gauge, inclined screw hydraulic motor, horizontal screw hydraulic motor, radiator hydraulic motor, air compressor machine hydraulic motor, agitator hydraulic motor.
Described power output system is that automobile gearbox is mechanically coupled together by gear and described power takeoff, described power takeoff and described hydraulic variable displacement pump are mechanically coupled together, described hydraulic variable displacement pump connects the described air compressor machine hydraulic motor of driving by flexible pipe hydraulic motion is converted into the strength motion, and described hydraulic variable displacement pump is converted into mechanical movement to hydraulic motion by the described inclined screw hydraulic motor of rubber hose connection driving, horizontal screw hydraulic motor, radiator hydraulic motor, agitator hydraulic motor.
Described vehicle mounted electrical apparatus control system comprises: control computer, monitoring computer, vehicle GPS navigation system, described control computer, monitoring computer, vehicle GPS navigation system are independent respectively installs.
Described spiral assembly comprises: magazine attachment, inclined screw, horizontal spiral, agitator, described agitator are installed in the described magazine attachment, and described magazine attachment is installed on the described inclined screw, and described inclined screw and described horizontal spiral link together with flange.
Described explosive loader assembly comprises: A powder charge jar, B powder charge jar, LOAD CELLS, fixed agraffe, seal cover, sealing cylinder, described A powder charge jar, B powder charge jar are independent respectively to be installed, and described A powder charge jar, B powder charge jar are installed separately described fixed agraffe, seal cover, sealing cylinder, LOAD CELLS respectively.
Described hose reel device comprises: revolution wheel disc, semiconductor anti-static plastic flexible pipe, described semiconductor anti-static plastic flexible pipe is installed on the described revolution wheel disc.
The utility model compared with prior art has the following advantages and beneficial effect:
Finished product explosive transportation function and the on-the-spot function of loading of explosive are united two into one, effectively reduce the explosive storage place, improved security greatly.Adopt the terminal automated management system of using of explosive, comprise vehicle control syetem and ground control system.Realization is bought on-site explosive filling full process automatization to the end, sequencing control from explosive.Be applicable to that the explosion environment is abominable, the explosion scene is difficult to realize the scope of operation in heavy mechanical equipment filling big gun hole.After car was parked near the blast area, the disposable filling finished all big gun holes of blasting work face.Load big gun hole explosive charge, can set arbitrarily, accurately and reliably, it is best that demolition effect can reach.Load the whole process in big gun hole and realize Automatic Control, simple to operate, reliable, easy to maintenance, the operator grasps easily.Vehicle-mounted explosive can need be used explosive charge according to the scene, and powder charge arbitrarily is difficult for the waste explosive, can significantly reduce cost, and increases economic efficiency.Reduce the personnel of contact explosive, avoided the generation of various security incidents.
Description of drawings
Fig. 1 is a part-structure schematic diagram of the present utility model ();
Fig. 2 is a part-structure schematic diagram of the present utility model (two);
Fig. 3 is a part-structure schematic diagram of the present utility model (three).
The utility model is further described by embodiment below in conjunction with accompanying drawing.
The specific embodiment
As shown in Figure 1, 2, 3, a kind of mechanized charging car of finished product explosive, comprise: automobile chassis 1, secondary vehicle frame 2 is installed on described automobile chassis 1 top, brake cooling system 6 is installed in described automobile chassis 1 bottom, on described secondary vehicle frame 2, casing assembly 7 is housed, gas circuit assembly 3, hydraulic control system 4, power output system 5, vehicle mounted electrical apparatus control system 8, spiral assembly 9, explosive loader assembly 10, hose reel device 11 are housed in described casing assembly 7.
Described brake cooling system 6 is made up of following main parts size: storage tank 24, water spout 31, air pressure regulator valve 42, the ball valve 38 of pouring water, air inlet ball valve 35, water spray ball valve 39.Described air inlet ball valve 35 is installed on the automobile gas bag 48, and the air pressure regulator valve 42 and the ball valve 38 of pouring water are installed on the storage tank 24, and water spout 31 is installed in the automotive wheel top, and it is indoor that water spray ball valve 39 is installed in car steering, connects by rubber hose between each part.During use, to the common clean water of storage tank 24 cans, close the ball valve 38 of pouring water, regulating air pressure regulator valve 42 pressure is 0.1Mpa, opens air inlet ball valve 35, and at this moment storage tank 24 water are in 0.1Mpa pressure.Under repeatedly brake situation, the driver opens water spray ball valve 39, and cooling water is ejected into doughnut brake position lowers the temperature, and guarantees that brake gear is reliable, guarantees ride safety of automobile.
Described gas circuit assembly 3 is made up of following primary clustering: air compressor 43, air inlet ball valve 35, gas circuit pressure regulator valve 25, magnetic valve 26, loading pressure regulator valve 17, Pressure gauge 18, pneumatic ball valve 23, automobile gas bag 48, pressure sensor 27.Described air compressor 43 is installed in casing assembly 7 front portions, air inlet ball valve 35 is installed on the automobile gas bag 48, gas circuit pressure regulator valve 25, magnetic valve 26 are installed in casing assembly 7 sides, loading pressure regulator valve 17, Pressure gauge 18, pneumatic ball valve 23, pressure sensor 27 are installed on the explosive loader assembly 10, connect by rubber hose between each part.Gas circuit assembly 3 is made up of pneumatic element control circuit, two parts of conveying explosive gas circuit, the pneumatic element control circuit by automobile gas bag 48 as source of the gas, output 0.7～0.8Mpa pressed gas becomes 0.4～0.5Mpa control magnetic valve 26 by gas circuit pressure regulator valve 25.Control computer 45 is switched on or switched off magnetic valve 26, and each pneumatic element requires to open and close by setup program, realizes that each requires action.Carry the explosive gas circuit by air compressor 43 as source of the gas, air compressor machine hydraulic motor 44 drives air compressor 43 and rotates generation compressed air, air compressor 43 rated maximum pressure 1.25Mpa, gas production 1 cubic meters per minute, use setting pressure to be 1.0Mpa, after dress was enough set charge weight, compressed air entered A powder charge jar 30 or B powder charge jar 33, reaches loading pressure 0.43Mpa by loading pressure regulator valve 17, open pneumatic ball valve 23, to big gun hole can explosive.
Described hydraulic control system 4 is made up of following main parts size: power takeoff 36, hydraulic variable displacement pump 37, choke valve 40, hydralic pressure gauge 41, inclined screw hydraulic motor 16, horizontal screw hydraulic motor 34, radiator hydraulic motor 46, air compressor machine hydraulic motor 44, agitator hydraulic motor 15.Described power takeoff 36 directly is connected with hydraulic variable displacement pump 37, and hydraulic variable displacement pump 37 and choke valve 40, hydralic pressure gauge 41, inclined screw hydraulic motor 16, horizontal screw hydraulic motor 34, radiator hydraulic motor 46, air compressor machine hydraulic motor 44, agitator hydraulic motor 15 are connected by rubber hose.
Hydraulic control system 4 is the power that drives inclined screw hydraulic motor 16, horizontal screw hydraulic motor 34, radiator hydraulic motor 46, air compressor machine hydraulic motor 44, agitator hydraulic motor 15.The startup of each hydraulic motor, close by the control of control computer 45, each hydraulic motor all is infinitely variable speeds, and the speed of rotating speed is realized by the flow of adjusting choke valve 40.Select for use a hydraulic variable displacement pump 37 to drive all hydraulic motor.
When the operation field loading, described power output system 5 is converted into the hydraulic pressure energy with the mechanical energy of car, is the power resources of explosive loading truck mechanical movement, strength motion.
Described vehicle mounted electrical apparatus control system 8 is made up of following primary clustering: control computer 45, monitoring computer 47, vehicle GPS navigation system 49.Described control computer 45, monitoring computer 47, the independent respectively installation of vehicle GPS navigation system 49.
Effect of control computer 45 and operation principles: buy management machine account, transportation management machine account, involving explosives unit and personal management, storage management machine account, use that registration, person liable's fingerprint recognition are confirmed, the accumulative total single hole is put number, explosive payload shows, automatically, manually input mode, data automatic recording, vehicle-mounted data transmit with earth station's explosive and detonator management system remote auto.At the scene during operation, the mechanical movement in the control powder charge process, hydraulic motion, strength motion, single hole is loaded the Weight control of explosive, the functions such as bulk registration of total powder charge.In explosive purchase, transportation, warehouse-in, outbound, when returning the storehouse, the typing real time data, and upload on company and the public security department's monitoring computer.Monitoring computer 47 effect and operation principles: operation field real-time video picture uploads on company and the public security department's monitoring computer, the security when greatly improving operation.Vehicle GPS navigation system 49 effect and operation principles: the concrete position of explosive loading truck and the route that travelled are known by guarantee company and public security department.
Described spiral assembly 9 is made up of following main parts size: magazine attachment 12, inclined screw 14, horizontal spiral 32, agitator 13.Described agitator 13 is installed in the magazine attachment 12, and magazine attachment 12 is installed on the inclined screw 14, and inclined screw 14 links together with horizontal spiral 32 usefulness flanges.During work, the operative employee pours vehicle-mounted finished product explosive in the magazine attachment 12 into, under agitator 13 effects, explosive enters inclined screw 14, inclined screw promotes explosive in horizontal spiral 32, and horizontal spiral 32 is just turning to A powder charge jar 30 can explosives, horizontal spiral 32 counter steer B powder charge jars 33 can explosives.The rotation of agitator 13, inclined screw 14, horizontal spiral 32 is driven by agitator hydraulic motor 15, inclined screw hydraulic motor 16, horizontal screw hydraulic motor 34 respectively.
Described explosive loader assembly 10 is made up of following main parts size: A powder charge jar 30, B powder charge jar 33, LOAD CELLS 20, fixed agraffe 19, seal cover 28, sealing cylinder 29.Described A powder charge jar 30, the independent respectively installation of B powder charge jar 33, A powder charge jar 30, B powder charge jar 33 are installed fixed agraffe 19, seal cover 28, sealing cylinder 29, LOAD CELLS 20 separately respectively.During work, when horizontal spiral 32 was imported explosives to the explosive loader cylindrical shell, LOAD CELLS 20 carried out weight measurement in real time, and the signal of telecommunication of LOAD CELLS 20 is by 45 controls of vehicle-mounted control computer.When arriving preset value, horizontal spiral 32 stops operating, and filling operation is finished.Explosive loader seal cover 28 forms the state of a sealing at cylinder action lower seal cylindrical shell.The loading source of the gas enters then, arrives when setting powder charge pressure 0.43Mpa, can be to big gun hole can explosive.
Described hose reel device 11 is made up of following main parts size: revolution wheel disc 21, semiconductor anti-static plastic flexible pipe 22.Described semiconductor anti-static plastic flexible pipe 22 is installed on the revolution wheel disc 21.When selecting for use semiconductor anti-static plastic flexible pipe 22 can guarantee that the explosive strength is carried, between explosive and the explosive, fricative static imports the earth between explosive and the tube wall, guarantees safety.For utilizing the explosive loading truck space to greatest extent, device adopts the contraction type structure, and semiconductor anti-static plastic flexible pipe 22 is wrapped on the revolution wheel disc 21.Hose reel device 11 is in contraction state at ordinary times, and during field operation, unwinding hoses roll device 11 is extracted semiconductor anti-static plastic flexible pipe 22 out and carried out loading.
The course of work of the present utility model:
Automobile is under the halted state and starts up the car, and reaches more than the 0.7Mpa at automobile pressure, hangs up power takeoff 36, and hydraulic variable displacement pump 37 rotates, and checks hydralic pressure gauge 40, and force value is carried out next-step operation under 〉=10Mpa condition.Set level hose reel device 11, extract semiconductor anti-static plastic flexible pipe 22 out and be connected and fixed.Open the A powder charge jar 30 and the B powder charge jar 33 of explosive loader assembly 10, fixed agraffe 19.Open the general supply of vehicle mounted electrical apparatus control system 8, open the power supply of two computers respectively, open monitoring computer 47, enter shooting control interface.Open the easy control program of control computer 45, enter the control interface.Bag powder is put on the magazine attachment 12 of spiral assembly 7, opens bag explosive is poured in the storehouse.Under the prerequisite of each hole charge unanimity, use the auto-programming charging operation.When hole charge is inconsistent, use manually control powder charge.The step of auto-programming powder charge: at first click, the air compressor 43 of gas circuit assembly 3, begin to produce compressed air.When atmospheric pressure reached 1.0Mpa, air compressor 43 can stop automatically.Set hole charge and weigh after the program, inclined screw 14 promotes explosives in horizontal spiral 32, and horizontal spiral 32 forward and backwards begin automatically respectively in A powder charge jar 30, B powder charge jar 33 powder charge to setting weight.Program setting is first A powder charge jar 30 work in proper order, and back B powder charge jar 33 work are unmodifiable.Next sealing cylinder 29 tension seal covers 28 form a volume of sealing.Air compressor 43 is to A powder charge jar 30 input pressure air, and when checking the red pin of the pressure sensor indicator 〉=upper limit position of A powder charge jar 30, A powder charge jar 30 possesses the distribution pressure condition to big gun hole loading.Deposit atmospheric pressure at affirmation air compressor 43 air accumulators and reach under the 1.0Mpa condition, beginning is carried explosive to the big gun hole.B powder charge jar 33 powder charge steps are the same with A powder charge jar 30.Manual control powder charge step: the hole charge program of weighing is the same with the auto-programming powder charge.Control computer 45 manual process are opened in click, select to A powder charge jar 30 or 33 powder charges of B powder charge jar.The powder charge step is manually controlled in 30 powder charges of A powder charge jar: click the positive key of horizontal spiral, the inclined screw key opened successively in control computer 45 programs, to 30 perfusions of A powder charge jar when setting charge weight, horizontal spiral 32 and inclined screw 14 stop operating automatically, A gas transmission key is opened in click, and beginning is carried compressed air in A powder charge jar 30.When the can worker checks the red pin of the pressure sensor indicator 〉=upper limit position of A powder charge jar 30, click the A blanking cover key in closing control computer 45 programs.Depositing atmospheric pressure at the affirmation air compressor air storage tank reaches under the 1.0Mpa condition; The A loading key in control computer 45 programs is opened in click, and beginning is carried explosive to the big gun hole.When loading begins, check that A powder charge jar 30 pressure sensor indicators change, when indicator≤0.1MPa position, the whole conveying of explosive that means A powder charge jar 30 finished, click A gas transmission key, A loading key in closing control computer 45 programs in order successively, click then and open A release key, the pressure-relief valve 27 of A powder charge jar 30 is discharged residual gas, and A powder charge jar 30 enters the manual filling operation of next round.B powder charge jar 33 powder charge steps are the same with A powder charge jar 30.
Claims (9)
1. the mechanized charging car of a finished product explosive, comprise: automobile chassis (1), it is characterized in that: secondary vehicle frame (2) is installed on described automobile chassis (1) top, brake cooling system (6) is installed in described automobile chassis (1) bottom, casing assembly (7) is housed on described secondary vehicle frame (2), gas circuit assembly (3), hydraulic control system (4), power output system (5), vehicle mounted electrical apparatus control system (8), spiral assembly (9), explosive loader assembly (10), hose reel device (11) are housed in described casing assembly (7).
2. according to the mechanized charging car of the described finished product explosive of claim 1, it is characterized in that: described brake cooling system (6) comprising: storage tank (24), water spout (31), air pressure regulator valve (42), the ball valve (38) of pouring water, air inlet ball valve (35), water spray ball valve (39), described air inlet ball valve (35) is installed on the automobile gas bag (48), described air pressure regulator valve (42) and the described ball valve of pouring water (38) are installed on the described storage tank (24), described water spout (31) is installed in the automotive wheel top, it is indoor that described water spray ball valve (39) is installed in car steering, connects by rubber hose between each part.
3. according to the mechanized charging car of the described finished product explosive of claim 1, it is characterized in that: described gas circuit assembly (3) comprising: air compressor (43), air inlet ball valve (35), gas circuit pressure regulator valve (25), magnetic valve (26), loading pressure regulator valve (17), Pressure gauge (18), pneumatic ball valve (23), automobile gas bag (48), pressure sensor (27), described air compressor (43) is installed in described casing assembly (7) front portion, described air inlet ball valve (35) is installed on the automobile gas bag (48), described gas circuit pressure regulator valve (25), magnetic valve (26) is installed in described casing assembly (7) side, described loading pressure regulator valve (17), Pressure gauge (18), pneumatic ball valve (23), pressure sensor (27) is installed on the described explosive loader assembly (10), connects by rubber hose between each part.
4. according to the mechanized charging car of the described finished product explosive of claim 1, it is characterized in that: described hydraulic control system (4) comprising: power takeoff (36), hydraulic variable displacement pump (37), choke valve (40), hydralic pressure gauge (41), inclined screw hydraulic motor (16), horizontal screw hydraulic motor (34), radiator hydraulic motor (46), air compressor machine hydraulic motor (44), agitator hydraulic motor (15), described power takeoff (36) directly is connected with described hydraulic variable displacement pump (37), described hydraulic variable displacement pump (37) and described choke valve (40), hydralic pressure gauge (41), inclined screw hydraulic motor (16), horizontal screw hydraulic motor (34), radiator hydraulic motor (46), air compressor machine hydraulic motor (44), agitator hydraulic motor (15) connects by rubber hose.
5. according to the mechanized charging car of the described finished product explosive of claim 1, it is characterized in that: described power output system (5) is that automobile gearbox is mechanically coupled together by gear and described power takeoff (36), described power takeoff (36) is mechanically coupled together with described hydraulic variable displacement pump (37), and described hydraulic variable displacement pump (37) connects the described air compressor machine hydraulic motor of driving (44) by flexible pipe hydraulic motion is converted into the strength motion; Described hydraulic variable displacement pump (37) is converted into mechanical movement to hydraulic motion by rubber hose connection driving described inclined screw hydraulic motor (16), horizontal screw hydraulic motor (34), radiator hydraulic motor (46), agitator hydraulic motor (15).
6. according to the mechanized charging car of the described finished product explosive of claim 1, it is characterized in that: described vehicle mounted electrical apparatus control system (8) comprising: control computer (45), monitoring computer (47), vehicle GPS navigation system (49), described control computer (45), monitoring computer (47), vehicle GPS navigation system (49) are independent respectively installs.
7. according to the mechanized charging car of the described finished product explosive of claim 1, it is characterized in that: described spiral assembly (9) comprising: magazine attachment (12), inclined screw (14), horizontal spiral (32), agitator (13), described agitator (13) is installed in the described magazine attachment (12), described magazine attachment (12) is installed on the described inclined screw (14), and described inclined screw (14) is connected with flange with described horizontal spiral (32).
8. according to the mechanized charging car of the described finished product explosive of claim 1, it is characterized in that: described explosive loader assembly (10) comprising: A powder charge jar (30), B powder charge jar (33), LOAD CELLS (20), fixed agraffe (19), seal cover (28), sealing cylinder (29), described A powder charge jar (30), B powder charge jar (33) are independent respectively to be installed, and described A powder charge jar (30), B powder charge jar (33) are installed described fixed agraffe (19), seal cover (28), sealing cylinder (29), LOAD CELLS (20) separately respectively.
9. according to the mechanized charging car of the described finished product explosive of claim 1, it is characterized in that: described hose reel device (11) comprising: revolution wheel disc (21), semiconductor anti-static plastic flexible pipe (22), described semiconductor anti-static plastic flexible pipe (22) is installed on the described revolution wheel disc (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200156505U CN202066435U (en) | 2011-01-15 | 2011-01-15 | Mechanical explosive loading truck for finished product explosives |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200156505U CN202066435U (en) | 2011-01-15 | 2011-01-15 | Mechanical explosive loading truck for finished product explosives |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202066435U true CN202066435U (en) | 2011-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200156505U Expired - Fee Related CN202066435U (en) | 2011-01-15 | 2011-01-15 | Mechanical explosive loading truck for finished product explosives |
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| Country | Link |
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| CN (1) | CN202066435U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114754646A (en) * | 2022-05-27 | 2022-07-15 | 四川省永生爆破工程有限公司 | Bulk explosive loading vehicle for tunnel blasting construction |
-
2011
- 2011-01-15 CN CN2011200156505U patent/CN202066435U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114754646A (en) * | 2022-05-27 | 2022-07-15 | 四川省永生爆破工程有限公司 | Bulk explosive loading vehicle for tunnel blasting construction |
| CN114754646B (en) * | 2022-05-27 | 2023-01-20 | 四川省永生爆破工程有限公司 | Bulk explosive loading vehicle for tunnel blasting construction |
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|---|---|---|---|
| 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: 20111207 Termination date: 20170115 |
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| CF01 | Termination of patent right due to non-payment of annual fee |