CN114111487A - Automatic filling device for gas extraction presplitting blasting explosive - Google Patents

Automatic filling device for gas extraction presplitting blasting explosive Download PDF

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Publication number
CN114111487A
CN114111487A CN202111336999.3A CN202111336999A CN114111487A CN 114111487 A CN114111487 A CN 114111487A CN 202111336999 A CN202111336999 A CN 202111336999A CN 114111487 A CN114111487 A CN 114111487A
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CN
China
Prior art keywords
explosive
gas extraction
box body
telescopic rod
automatic filling
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Pending
Application number
CN202111336999.3A
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Chinese (zh)
Inventor
景长宝
王海燕
沈建廷
王公达
王飞
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Shaanxi Changwu Tingnan Coal Industry Co Ltd
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Shaanxi Changwu Tingnan Coal Industry Co Ltd
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Publication date
Application filed by Shaanxi Changwu Tingnan Coal Industry Co Ltd filed Critical Shaanxi Changwu Tingnan Coal Industry Co Ltd
Priority to CN202111336999.3A priority Critical patent/CN114111487A/en
Publication of CN114111487A publication Critical patent/CN114111487A/en
Pending legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42DBLASTING
    • F42D1/00Blasting methods or apparatus, e.g. loading or tamping
    • F42D1/08Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42DBLASTING
    • F42D3/00Particular applications of blasting techniques

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The invention discloses an automatic filling device for gas extraction pre-splitting blasting explosive, which belongs to the field of gas and comprises a base, wherein a shell is arranged on the base, an explosive storage box is arranged in the shell, an outlet end of the explosive storage box is provided with a plug, the plug is connected with one end of a first telescopic rod, the other end of the first telescopic rod is fixedly arranged on the inner wall of the shell, a conveying belt is arranged on the base, a vertical lifting column is arranged on the base, a rotary joint is arranged at the top end of the vertical lifting column, the upper surface of the rotary joint is connected with one end of a horizontal telescopic column, the other end of the horizontal telescopic column is movably connected with an installation box body, a mechanical claw is installed on the installation box body, a support is arranged on the installation box body, a second telescopic rod is installed on the support, and a push block is arranged on the second telescopic rod. According to the invention, the presplitting blasting explosive is automatically filled when gas is extracted, so that manual operation is avoided, time and labor are saved, the explosive explosion danger is reduced, potential safety hazards such as rock stratum collapse are avoided, the working safety of the device is improved, and the device is convenient to use.

Description

Automatic filling device for gas extraction presplitting blasting explosive
Technical Field
The invention relates to the field of gas, in particular to an automatic filling device for gas extraction presplitting blasting explosive.
Background
The gas is formed by decomposing cellulose and organic matters under the action of anaerobic bacteria at the initial stage of stacking ancient plants into coal. In a high-temperature and high-pressure environment, gas is continuously generated due to physical and chemical actions while coal is formed. Gas is colorless and odorless, but apple-like aroma can sometimes be heard, because aromatic hydrocarbon gas and gas are simultaneously gushed out. The gas exists in a free state and an adsorbed state in the coal body or the surrounding rock. Gas plays a very important role in the daily life of human beings; like cooking food, a gas stove is used; hot water for bathing needs a gas water heater; even the automobile can be burned by using the gas ; in addition, beautiful tiles for covering houses are all gas used by automobiles burned by gas to replace gasoline which can cause pollution. Since the gas combustion system gas is mixed with the air confused, it is more uniform, and the number of cylinders entering the vehicle is more even, so it is very easy to burn, and there is no impurity, so it is a fuel that will not pollute the environment, and it is worth to spread. Pre-splitting blasting is often used during gas extraction, and the pre-splitting blasting refers to that a through crack with a certain width is blasted along a design contour line before blasting in a main blasting area during excavation. The vibration wave of the excavation blasting is buffered and reflected to control the damage influence of the vibration wave on the reserved rock mass, so that a smoother excavation profile is obtained. The pre-splitting blasting of gas extraction can reduce the excavation amount, save the engineering investment, ensure the excavated surface to be smooth and neat, facilitate the later-stage operation, have small damage influence on the reserved rock mass and be beneficial to the stability of the reserved rock mass, and because of the existence of the pre-split, the restriction on the blasting scale of the excavated area can be relaxed, thereby improving the efficacy.
After the pre-splitting blast hole for gas extraction is finished, an explosive detonator needs to be manually filled, the exploited rock stratum is damaged when the pre-splitting blast hole is easily generated, potential safety hazards such as rock stratum fracture and the like easily occur when people step on the pre-splitting blast hole, and the safety of the gas extraction project is affected.
Disclosure of Invention
Aiming at the existing problems, the invention aims to provide an automatic filling device for gas extraction pre-splitting blasting explosive, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides an automatic filling device of gas drainage presplitting blasting explosive, the on-line screen storage device comprises a base, the base bottom be equipped with the guide pulley, be equipped with the shell on the base, the inside explosive that is equipped with of shell keeps the case, explosive keeps the bottom of the case end to be equipped with the explosive transmission pipe, explosive transmission pipe exit end is equipped with the end cap, end cap and first telescopic link one end are connected, first telescopic link other end is fixed to be set up at the shell inner wall, be equipped with the conveyer belt on the base, be equipped with vertical lift post on the base, vertical lift capital end is equipped with rotary joint, rotary joint upper surface and horizontal flexible post one end are connected, horizontal flexible post other end swing joint installation box body, installation gripper on the installation box body, be equipped with the support on the installation box body, install the second telescopic link on the support, be equipped with the ejector pad on the second telescopic link, the second telescopic link passes the setting of installation box body, the ejector pad sets up the inboard at gripper.
As a further scheme of the invention: the outer wall of the mounting box body is provided with a camera and a laser sight.
As a further scheme of the invention: the explosive storage box is provided with a sealing cover, and the sealing cover is provided with a handle and a safety lock.
As a further scheme of the invention: the shell on be equipped with the discharge door, the discharge door sets up in the conveyer belt top.
As a further scheme of the invention: one end of the conveying belt is arranged below the explosive conveying pipe, and the other end of the conveying belt is arranged outside the shell.
As a further scheme of the invention: the push block is provided with a protection pad.
As a further scheme of the invention: and the side wall of the vertical lifting column is provided with a baffle.
Compared with the prior art; the invention has the beneficial effects that: when the explosive conveying pipe works, the position of the plug is adjusted through the first telescopic rod, so that the plug is conveniently controlled to plug the explosive conveying pipe, and the explosive is prevented from leaking; when the explosive is needed, the first telescopic rod controls the plug to move away, so that the explosive can conveniently slide down from the explosive storage box through the explosive transmission pipe, the presplitting blasting explosive is conveniently filled in the subsequent gas extraction, the safety is ensured, the manual operation is avoided, time and labor are saved, the explosive explosion danger is reduced, the potential safety hazard of rock stratum collapse and the like is avoided, the working safety of the device is improved, the explosive sliding down through the explosive transmission pipe is transmitted through the transmission belt, one end of the explosive is facilitated, the presplitting blast hole is conveniently and subsequently filled, the safety is ensured, the mechanical claw is controlled to grab the explosive on the transmission belt by adjusting the angles of the vertical lifting column, the rotary joint, the horizontal telescopic column and the mounting box body during working, the vertical lifting column, the rotary joint, the horizontal telescopic column and the mounting box body are adjusted, and the moving position and the track of the mechanical claw are conveniently controlled, the mechanical claw is moved to one side of the pre-splitting blast hole conveniently, subsequent automatic explosive filling is facilitated, time and labor are saved, the danger of manual operation is reduced, potential safety hazards caused by stratum collapse and the like are avoided, the working safety is improved, the working effect and efficiency are improved, when the mechanical claw moves the pre-splitting blast hole, the mechanical claw is controlled to slightly loosen the explosive, the second telescopic rod is adjusted to control the push block to move, the explosive is conveniently pushed into the pre-splitting blast hole through the push block, the automatic explosive filling is facilitated, the manual operation is reduced, the potential safety hazards caused by stratum collapse and the like are avoided, the working safety is improved, the working effect and efficiency are improved, the field condition of work is shot and recorded at any time through the camera during working, the worker can conveniently remotely control the movement of the mechanical claw, the explosive filling is facilitated, the position and the inclination angle of the pre-splitting blast hole are conveniently measured through the laser collimator, the explosive on the convenient control gripper is on the extension line of presplitting big gun hole, does benefit to in the follow-up pushing away the explosive with the ejector pad impels the presplitting big gun hole through, makes things convenient for the automatic of explosive to fill, guarantees the security, avoids manual operation, and labour saving and time saving reduces the danger of explosive explosion, avoids the potential safety hazard such as the stratum sinks simultaneously, improves the security of device work, makes things convenient for device's use.
Drawings
Fig. 1 is a schematic structural diagram of an automatic filling device for gas extraction presplitting blasting explosive.
Fig. 2 is a schematic structural diagram of a mounting box body in the automatic filling device for gas extraction presplitting blasting explosive.
Fig. 3 is a schematic view of installation of a camera and a laser sight in the automatic filling device for gas extraction presplitting blasting explosives.
In the figure: 1. a base; 2. a guide wheel; 3. a housing; 4. an explosive storage box; 5. a sealing cover; 6. a handle; 7. a safety lock; 8. an explosive conveying pipe; 9. a plug; 10. a first telescopic rod; 11. a conveyor belt; 12. a discharge door; 13. a vertical lifting column; 14. a rotary joint; 15. a horizontal telescopic column; 16. installing a box body; 17. a gripper; 18. a support; 19. a second telescopic rod; 20. a push block; 21. a camera; 22. a laser sight; 23. a baffle plate; 24. and (6) a protective pad.
Detailed Description
The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; rather than all embodiments. Based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "provided," "connected," and "connected" are to be construed broadly; for example, the two elements may be fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or communicated with each other. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-3, an automatic filling device for gas extraction pre-splitting blasting explosive comprises a base 1, wherein a guide wheel 2 is arranged at the bottom end of the base 1, the guide wheel 2 facilitates movement of the device, facilitates subsequent automatic control of explosive filling into a pre-splitting blast hole, saves time and labor, avoids explosive explosion risks during manual filling, avoids potential safety hazards such as collapse caused by damage of rock strata generated by the pre-splitting blast hole, improves filling safety of the pre-splitting blasting explosive, facilitates subsequent gas extraction effect and efficiency, and facilitates use of the device.
The base 1 is provided with a shell 3, an explosive storage box 4 is arranged inside the shell 3, an explosive transmission pipe 8 is arranged at the bottom end of the explosive storage box 4, an outlet end of the explosive transmission pipe 8 is provided with a plug 9, the plug 9 is connected with one end of a first telescopic rod 10, the other end of the first telescopic rod 10 is fixedly arranged on the inner wall of the shell 3, the position of the plug 9 is adjusted through the first telescopic rod 10 during work, the plug 9 is conveniently controlled to plug the explosive transmission pipe 8, and the explosive is prevented from leaking; when needing the explosive, puting aside through first telescopic link 10 control end cap 9, make things convenient for the explosive to slide down through explosive transmission pipe 8 from explosive storage box 4, make things convenient for follow-up packing of presplitting blasting explosive when taking out gas drainage, guarantee the security, avoid manual operation, labour saving and time saving reduces the danger of explosive explosion, avoids the potential safety hazard such as stratum collapse simultaneously, improves the security of device work, makes things convenient for the use of device.
Be equipped with conveyer belt 11 on the base 1, 11 one ends of conveyer belt set up in the below of explosive transmission pipe 8, and the setting of the conveyer belt 11 other end is outside at shell 3, and the explosive that slides down through explosive transmission pipe 8 does benefit to the one end of explosive in the transmission through conveyer belt 11, and the convenience is follow-up to the packing of presplitting big gun hole, guarantees the security, makes things convenient for the use of device.
The base 1 is provided with a vertical lifting column 13, the top end of the vertical lifting column 13 is provided with a rotary joint 14, the upper surface of the rotary joint 14 is connected with one end of a horizontal telescopic column 15, the other end of the horizontal telescopic column 15 is movably connected with an installation box body 16, a mechanical claw 17 is installed on the installation box body 16, the moving position and track of the mechanical claw 17 are conveniently controlled by adjusting the angles of the vertical lifting column 13, the rotary joint 14, the horizontal telescopic column 15 and the installation box body 16 during working, the mechanical claw 17 is controlled to grab the explosive on the conveyor belt 11, the vertical lifting column 13, the rotary joint 14, the horizontal telescopic column 15 and the installation box body 16 are adjusted, the mechanical claw 17 is favorably moved to one side of a pre-splitting blast hole, subsequent automatic explosive filling is convenient, time and labor are saved, the danger of manual operation is reduced, potential safety hazards caused by stratum collapse and the like are avoided, the working safety is improved, and the working effect and efficiency are improved, the use of the device is convenient.
Be equipped with support 18 on the installation box body 16, install second telescopic link 19 on the support 18, be equipped with ejector pad 20 on the second telescopic link 19, second telescopic link 19 passes installation box body 16 and sets up, ejector pad 20 sets up the inboard at gripper 17, when the presplitting big gun hole of gripper 17 removal, control gripper 17 slightly loosens the explosive, it removes to adjust second telescopic link 19 control ejector pad 20, conveniently impel the presplitting big gun hole with the explosive through ejector pad 20 in, make things convenient for the automatic filling of explosive, reduce manual operation, avoid the potential safety hazard that the stratum collapse etc. arouse, increase the security of work, the effect and the efficiency of work are improved, make things convenient for the use of device.
The 16 outer walls of installation box body are equipped with camera 21 and laser sight 22, the on-the-spot condition of record work is shot at any time through camera 21 in the during operation, make things convenient for the removal of staff remote control gripper 17, the packing of the explosive of being favorable to, conveniently measure the position and the inclination of aiming the presplitting big gun hole through laser sight 22, the explosive on the convenient control gripper 17 is on the extension line in presplitting big gun hole, do benefit to in the follow-up pushing block 20 impels the presplitting big gun hole with the explosive through the ejector pad, make things convenient for the automatic filling of explosive, guarantee the security, avoid manual operation, time saving and labor saving, reduce the danger of explosive explosion, avoid the potential safety hazard that the stratum subsides etc. simultaneously, the security of improving device work, make things convenient for device's use.
The explosive storage box 4 is provided with the sealing cover 5, the sealing cover 5 is provided with the handle 6 and the safety lock 7, the sealing effect of the explosive storage box 4 is guaranteed through the sealing cover 5, the explosives are prevented from being corroded by external water vapor and the like, the safety of the explosives is protected, and the follow-up blasting during gas extraction is facilitated. The handle 6 makes things convenient for opening of sealed lid 5 to close, and safety lock 7 does benefit to protection device, conveniently makes explosive storage box 4 can only open through specific staff, does benefit to the protection explosive, avoids the explosive to suffer the danger of stealing, does benefit to the security of guaranteeing gas exploitation engineering, facilitates the use of device.
Be equipped with discharge door 12 on the shell 3, discharge door 12 sets up in conveyer belt 11 top, and discharge door 12 makes things convenient for the transportation of explosive on conveyer belt 11 to remove, does benefit to follow-up packing to the presplitting big gun hole, guarantees the security, facilitates the use of device.
The protection pad 24 is arranged on the push block 20, the protection pad 24 plays a role in protection and buffering, potential safety hazards caused by contact collision between the push block 20 and explosive are avoided, safety of the device is improved, and the device is convenient to use.
The side wall of the vertical lifting column 13 is provided with a baffle 23, the baffle 23 is arranged above the conveyor belt 11, the explosive is favorably blocked by the baffle 23 in the working process, the explosive is prevented from sliding along with the movement of the conveyor belt 11, the follow-up grabbing of the mechanical claw 17 is favorably realized, the safety is ensured, and the use of the device is facilitated.
The working principle of the invention is as follows: when the explosive conveying device works, the position of the plug 9 is adjusted through the first telescopic rod 10, so that the plug 9 is conveniently controlled to plug the explosive conveying pipe 8, and the explosive is prevented from leaking; when the explosive is needed, the plug 9 is controlled to move away through the first telescopic rod 10, so that the explosive can conveniently slide down from the explosive storage box 4 through the explosive transmission pipe 8, the presplitting blasting explosive is conveniently filled in the follow-up gas extraction process, the safety is ensured, the manual operation is avoided, the time and the labor are saved, the explosive explosion danger is reduced, meanwhile, potential safety hazards such as stratum collapse and the like are avoided, the working safety of the device is improved, the explosive sliding down through the explosive transmission pipe 8 is transmitted through the transmission belt 11, one end of the explosive is facilitated, the follow-up filling of a presplitting blast hole is convenient, the safety is ensured, the mechanical claw 17 is controlled to grab the explosive on the transmission belt 11 by adjusting the angles of the vertical lifting column 13, the rotary joint 14, the horizontal telescopic column 15 and the installation box body 16 during the working process, the vertical lifting column 13, the rotary joint 14, the horizontal telescopic column 15 and the installation box body 16 are adjusted, the moving position and the track of the mechanical claw 17 can be conveniently controlled, the mechanical claw 17 can be conveniently moved to one side of a pre-splitting blast hole, the subsequent automatic explosive filling is convenient, the time and the labor are saved, the danger of manual operation is reduced, the potential safety hazard caused by rock stratum collapse and the like is avoided, the working safety is improved, the working effect and the working efficiency are improved, when the mechanical claw 17 moves to the pre-splitting blast hole, the mechanical claw 17 is controlled to slightly loosen the explosive, the second telescopic rod 19 is adjusted to control the push block 20 to move, the explosive is conveniently pushed into the pre-splitting blast hole through the push block 20, the automatic explosive filling is convenient, the manual operation is reduced, the potential safety hazard caused by rock stratum collapse and the like is avoided, the working safety is improved, the working effect and the working efficiency are improved, the field condition of the work is shot and recorded at any time through the camera 21 during the working, the remote control of the movement of the mechanical claw 17 by a worker is convenient, the explosive filling is facilitated, conveniently measure the position and the inclination who aims the presplitting big gun hole through laser sight 22, conveniently control the explosive on the gripper 17 on the extension line of presplitting big gun hole, do benefit to in follow-up propelling the presplitting big gun hole with the explosive through ejector pad 20, make things convenient for the automatic filling of explosive, guarantee the security, avoid manual operation, time saving and labor saving, reduce the danger of explosive explosion, avoid the potential safety hazard such as stratum collapse simultaneously, improve the security of device work, facilitate the use of device.
The guide wheel 2 is convenient for moving the device, facilitates subsequent automatic control of filling of explosives into the pre-splitting blast holes, saves time and labor, avoids explosive explosion danger during manual filling, avoids potential safety hazards such as collapse and the like caused by damage of rock strata generated by the pre-splitting blast holes, improves the filling safety of the pre-splitting blasting explosives, facilitates the subsequent gas extraction effect and efficiency, ensures the sealing effect of the explosive storage box 4 through the sealing cover 5, avoids erosion of the explosives by external water vapor and the like, facilitates protection of the explosive safety, and facilitates subsequent blasting during gas extraction. Handle 6 makes things convenient for opening of sealed lid 5 to close, safety lock 7 does benefit to protection device, conveniently make explosive storage box 4 can only open through specific staff, do benefit to the protection explosive, avoid the explosive to suffer the danger of stealing, do benefit to the security of guaranteeing the gas exploitation engineering, discharge door 12 makes things convenient for the transportation of explosive on conveyer belt 11 to remove, do benefit to follow-up packing to the presplitting big gun hole, guarantee the security, protection pad 24 plays the protection cushioning effect, avoid the potential safety hazard that ejector pad 20 and explosive contact collision arouse, improve the security of device, baffle 23 sets up in conveyer belt 11 top, the during operation does benefit to through baffle 23 and blocks the explosive, avoid the explosive to remove the landing along with conveyer belt 11, do benefit to follow-up gripper 17 to its snatching, guarantee the security, facilitate the use of device.
To those skilled in the art; it is obvious that the invention is not restricted to the details of the above-described exemplary embodiments; and without departing from the spirit or essential characteristics of the invention; the invention can be embodied in other specific forms. Thus; from whatever point; the embodiments should be considered as exemplary; and is not limiting; the scope of the invention is indicated by the appended claims rather than by the foregoing description; all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore; it should be understood that; although the present description has been described in terms of embodiments; but not every embodiment contains only a single solution; this manner of description is by way of clarity only; the person skilled in the art will consider the description as a whole; the technical schemes in the embodiments can also be combined appropriately; forming other embodiments as will be appreciated by those skilled in the art.

Claims (7)

1. The automatic filling device for the gas extraction presplitting blasting explosive comprises a base (1) and is characterized in that a guide wheel (2) is arranged at the bottom end of the base (1), a shell (3) is arranged on the base (1), and an explosive storage box (4) is arranged inside the shell (3);
an explosive conveying pipe (8) is arranged at the bottom end of the explosive storage box (4), a plug (9) is arranged at the outlet end of the explosive conveying pipe (8), the plug (9) is connected with one end of a first telescopic rod (10), and the other end of the first telescopic rod (10) is fixedly arranged on the inner wall of the shell (3);
a conveyor belt (11) is arranged on the base (1);
a vertical lifting column (13) is arranged on the base (1), a rotary joint (14) is arranged at the top end of the vertical lifting column (13), the upper surface of the rotary joint (14) is connected with one end of a horizontal telescopic column (15), the other end of the horizontal telescopic column (15) is movably connected with a mounting box body (16), and a mechanical claw (17) is mounted on the mounting box body (16);
the mounting box body (16) is provided with a support (18), the support (18) is provided with a second telescopic rod (19), the second telescopic rod (19) is provided with a push block (20), the second telescopic rod (19) penetrates through the mounting box body (16) and is arranged, and the push block (20) is arranged on the inner side of the mechanical claw (17).
2. The automatic filling device for the gas extraction pre-splitting blasting explosive according to claim 1, wherein a camera (21) and a laser sight (22) are arranged on the outer wall of the installation box body (16).
3. The automatic filling device for the gas extraction presplitting blasting explosive according to claim 2, characterized in that a sealing cover (5) is arranged on the explosive storage box (4), and a handle (6) and a safety lock (7) are arranged on the sealing cover (5).
4. The automatic filling device of the gas extraction pre-splitting blasting explosive according to claim 3, wherein a discharge door (12) is arranged on the casing (3), and the discharge door (12) is arranged above the conveyor belt (11).
5. The automatic filling device of the gas extraction pre-splitting blasting explosive according to claim 4, wherein one end of the conveyor belt (11) is arranged below the explosive conveying pipe (8), and the other end of the conveyor belt (11) is arranged outside the shell (3).
6. The automatic filling device of the gas extraction pre-splitting blasting explosive according to claim 5, wherein a protection pad (24) is arranged on the pushing block (20).
7. The automatic filling device of the gas extraction pre-splitting blasting explosive according to claim 6, wherein a baffle (23) is arranged on the side wall of the vertical lifting column (13).
CN202111336999.3A 2021-11-12 2021-11-12 Automatic filling device for gas extraction presplitting blasting explosive Pending CN114111487A (en)

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CN202111336999.3A CN114111487A (en) 2021-11-12 2021-11-12 Automatic filling device for gas extraction presplitting blasting explosive

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CN202111336999.3A CN114111487A (en) 2021-11-12 2021-11-12 Automatic filling device for gas extraction presplitting blasting explosive

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115060565A (en) * 2022-08-16 2022-09-16 昆明理工大学 Detection equipment and method for pre-splitting blasting model test
CN115060565B (en) * 2022-08-16 2022-11-01 昆明理工大学 Detection equipment and method for pre-splitting blasting model test

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