CN214537627U - Explosive discharging device for deep hole top breaking blasting - Google Patents
Explosive discharging device for deep hole top breaking blasting Download PDFInfo
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- CN214537627U CN214537627U CN202120486554.2U CN202120486554U CN214537627U CN 214537627 U CN214537627 U CN 214537627U CN 202120486554 U CN202120486554 U CN 202120486554U CN 214537627 U CN214537627 U CN 214537627U
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- explosive
- fixed
- deep hole
- barrel
- discharging device
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- 239000002360 explosive Substances 0.000 title claims abstract description 76
- 238000005422 blasting Methods 0.000 title claims abstract description 20
- 238000007599 discharging Methods 0.000 title claims abstract description 17
- 238000005520 cutting process Methods 0.000 claims abstract description 58
- 239000003814 drug Substances 0.000 claims abstract description 40
- 230000001737 promoting effect Effects 0.000 claims abstract description 5
- 125000004122 cyclic group Chemical group 0.000 claims 1
- 238000005065 mining Methods 0.000 abstract description 5
- 239000003245 coal Substances 0.000 abstract description 4
- 238000009826 distribution Methods 0.000 abstract description 3
- 239000000843 powder Substances 0.000 description 21
- 230000009286 beneficial effect Effects 0.000 description 10
- 230000008901 benefit Effects 0.000 description 10
- 238000010276 construction Methods 0.000 description 6
- 239000003721 gunpowder Substances 0.000 description 6
- 230000006978 adaptation Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 210000002421 cell wall Anatomy 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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Abstract
The utility model relates to a device of putting that deep hole broke top blasting belongs to coal mining technical field. This put medicine device includes: a fixed seat; the top end of the medicine charging barrel is fixedly connected with the bottom end of the fixing seat; the fixed cutting is in annular distribution on the lateral wall of explosive barrel, and is a plurality of the top of fixed cutting all with the fixing base rotates to be connected, the lateral wall of explosive barrel is equipped with and is used for promoting a plurality ofly the bottom of fixed cutting is kept away from the elastic component of explosive barrel, through the elastic component promotes a plurality of the bottom of fixed cutting inserts the deep hole inner wall and will the explosive barrel is fixed. The explosive discharging device can discharge explosive very conveniently, explosive is fixed in the deep hole, and the explosive discharging efficiency is high.
Description
Technical Field
The utility model belongs to the technical field of coal mining, concretely relates to explosive discharging device of deep hole top breaking blasting.
Background
In coal mining, a deep hole top-breaking blasting mode is often adopted for mining, the number of deep holes in coal mining is 7-10 m, and meanwhile, the explosive is discharged from bottom to top in a mode, so that the explosive is relatively difficult to discharge.
The current medicine placing device is not easy to operate when placing medicine, can not be well fixed, and often needs to be additionally provided with a supporting device, so that the medicine placing efficiency is low.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve above-mentioned technical problem and provide a deep hole broken top blasting put medicine device, can be very convenient put the medicine to fixed gunpowder is in the deep hole, and it is high to put the drug efficiency.
The utility model provides an above-mentioned technical problem's technical scheme as follows: a explosive discharging device for deep hole top breaking blasting comprises:
a fixed seat;
the top end of the medicine charging barrel is fixedly connected with the bottom end of the fixing seat;
the fixed cutting is in annular distribution on the lateral wall of explosive barrel, and is a plurality of the top of fixed cutting all with the fixing base rotates to be connected, the lateral wall of explosive barrel is equipped with and is used for promoting a plurality ofly the bottom of fixed cutting is kept away from the elastic component of explosive barrel, through the elastic component promotes a plurality ofly the bottom of fixed cutting is kept away from the explosive barrel to contact with the deep hole inner wall will the explosive barrel is fixed.
The utility model has the advantages that: (1) sufficient gunpowder can be filled into the powder charging barrel, then the powder charging barrel can extend into the deep hole through the long rod, and after the powder charging barrel extends to a specified position, the fixing inserting strips are contacted with the inner wall of the deep hole under the action of the elastic piece to fix the powder charging barrel, so that the powder charging is realized, and the operation is very convenient;
(2) the explosive discharging device can conveniently charge gunpowder into the deep hole to realize deep hole top breaking blasting construction, can discharge the explosive at a specified position, and has high construction accuracy and high construction efficiency;
(3) this put medicine device simple structure, low in manufacturing cost does benefit to very much and uses widely.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
Furthermore, the elastic part is a plurality of springs, and is a plurality of the spring is with a plurality of fixed cutting one-to-one, and is a plurality of the one end of spring with the lateral wall fixed connection of explosive barrel, the other end with correspond the bottom fixed connection of fixed cutting.
The beneficial effect of adopting the further scheme is that: do benefit to and promote every fixed cutting respectively and keep away from the explosive charging barrel, it is fixed with the explosive charging barrel.
Further, the bottom of fixing base is equipped with a plurality of rotation grooves, and is a plurality of the rotation groove is with a plurality of fixed cutting one-to-one, and is a plurality of the top of fixed cutting is rotated and is established and is corresponded rotate in the groove.
The beneficial effect of adopting the further scheme is that: do benefit to the rotation of fixed cutting, can restrict the outer angle of rotation of fixed cutting, avoid fixed cutting to rotate excessively to more do benefit to and fix the explosive charging barrel.
Further, it is a plurality of the fixed pivot that is equipped with in the top of fixed cutting, it is a plurality of rotate the inslot be equipped with the commentaries on classics hole of pivot adaptation, it is a plurality of fixed cutting through corresponding the pivot with change the hole cooperation with the fixing base rotates and is connected.
The beneficial effect of adopting the further scheme is that: the rotation of the fixed cutting is facilitated.
Further, still include and be used for locking a plurality of fixed cutting the locking part, the locking part with the bottom detachable connection of explosive barrel.
The beneficial effect of adopting the further scheme is that: can lock a plurality of fixed slips earlier to the convenient position of adjusting the explosive barrel in the deep hole.
Furthermore, the locking part comprises a supporting seat and a locking ring, a sliding groove is formed in the top end of the supporting seat, the locking ring is arranged in the sliding groove in a sliding mode and sleeved on the outer wall of the fixed inserting strip in a plurality of modes, a pull rope used for pulling the locking ring is arranged on the locking ring, and the locking ring slides into the sliding groove to be separated from the fixed inserting strip in a plurality of modes through pulling the pull rope.
The beneficial effect of adopting the further scheme is that: the locking of the fixed cutting is controlled, and the operation is convenient.
Furthermore, a through hole for the stay cable to pass through is formed in the supporting seat, and one end of the stay cable passes through the through hole.
The beneficial effect of adopting the further scheme is that: the pulling of the inhaul cable is facilitated.
Furthermore, the bottom of supporting seat is equipped with the connector.
The beneficial effect of adopting the further scheme is that: is convenient to be connected with an external rod body.
Further, be equipped with a plurality of plug bush in the slip recess, the bottom of explosive charging bucket be equipped with a plurality of the inserted bar of plug bush adaptation, the supporting seat passes through the inserted bar with the inserted bar cooperation with the explosive charging bucket can be dismantled and be connected.
The beneficial effect of adopting the further scheme is that: the detachable connection of the supporting seat and the medicine charging barrel is facilitated.
Further, a medicine charging inner cavity is formed in the medicine charging barrel, and a medicine charging hole communicated with the medicine charging inner cavity is formed in the fixing base.
The beneficial effect of adopting the further scheme is that: is beneficial to charging gunpowder.
Drawings
FIG. 1 is a front view of the medicine dispensing device of the present invention;
FIG. 2 is a top view of the medicine dispensing device of the present invention;
FIG. 3 is a cross-sectional view of the medicine dispensing device of the present invention;
fig. 4 is an expanded schematic view of the medicine dispensing device of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a fixed seat; 2. a medicine barrel; 3. fixing the cutting; 4. a spring; 5. a supporting seat; 6. a locking ring; 7. a connector; 8. a cable; 9. a charge cavity; 10. a loading hole; 11. a rotating groove; 12. inserting a sleeve; 13. inserting a rod; 14. a sliding groove.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
Examples
As shown in fig. 1 to 4, the present embodiment provides a explosive discharging device for deep-hole top-breaking blasting, including: fixing base 1, powder charge bucket 2 and a plurality of fixed cutting 3.
The top end of the medicine charging barrel 2 is fixedly connected with the bottom end of the fixed seat 1. A plurality of fixed cutting 3 are the annular distribution on the lateral wall of explosive cartridge 2 around the axis of explosive cartridge 2, the top of a plurality of fixed cutting 3 all rotates with fixing base 1 to be connected, and the lateral wall of explosive cartridge 2 is equipped with the elastic component that is used for promoting the bottom of a plurality of fixed cutting 3 and keeps away from explosive cartridge 2, promotes a plurality of fixed cutting 3's bottom through the elastic component and keeps away from explosive cartridge 2 to it is fixed with explosive cartridge 2 with the contact of deep hole inner wall.
Wherein, powder charge bucket 2 is cylindrical, can with the deep hole adaptation. Fixing base 1 is the disc to the level sets up, and the top of dress explosive barrel 2 is connected with the lower fixed surface of fixing base 1. Rotate with fixing base 1 through the top of a plurality of fixed slips 3 and be connected for a plurality of fixed slips 3 can rotate and become the form that disperses, insert deep hole inner wall with the bottom of a plurality of fixed slips 3, can be fixed fixing base 1 and explosive charging bucket 2, realize putting the medicine. Wherein, the elastic component is used for promoting a plurality of fixed cutting 3 and is the form of dispersing, and in fixing base 1 and explosive charging barrel 2 entered into the deep hole, along with getting into, there is the extrusion force to a plurality of fixed cutting 3, so it is not influenced to get into the deep hole, and when stopping stretching into the deep hole, the elastic component promotes fixed cutting 3 and deep hole inner wall contact, will adorn explosive charging barrel 2 fixed for it is very convenient to put the medicine. Wherein, the quantity of fixed cutting 3 is 6, and the equilibrium is good.
The effect of the technical scheme of this embodiment is, can pack into the powder of capacity through the powder charge bucket 2 that sets up, then can stretch into the deep hole with powder charge bucket 2 through the stock, after stretching into the assigned position, under the effect of elastic component, fixed cutting 3 and deep hole inner wall contact will be fixed with powder charge bucket 2, realize putting the medicine, it is very convenient to operate. Through this put medicine device can conveniently pack powder into the deep hole and realize the deep hole and break the top blasting construction, can put the medicine in the assigned position, the construction accuracy is high, and the efficiency of construction is high. This put medicine device simple structure, low in manufacturing cost does benefit to very much and uses widely.
Preferably, in this embodiment, the elastic component is a plurality of springs 4, a plurality of springs 4 and a plurality of fixed slips 3 one-to-one, a plurality of springs 4's one end and the lateral wall fixed connection of explosive barrel 2, the other end and the bottom fixed connection of corresponding fixed slips 3.
Wherein, a plurality of springs 4 are located between the bottom of fixed cutting 3 and the lateral wall of powder charge bucket 2, and elasticity through a plurality of springs 4 promotes a plurality of fixed cutting 3 and keeps away from powder charge bucket 2. When the medicine barrel 2 enters the deep hole, the springs 4 are extruded, so that the medicine barrel 2 enters the deep hole without being influenced.
Preferably, in this embodiment, the bottom of the fixing base 1 is provided with a plurality of rotating grooves 11, the plurality of rotating grooves 11 correspond to the plurality of fixed slips 3 one-to-one, and the top of the plurality of fixed slips 3 is rotatably disposed in the corresponding rotating grooves 11.
Wherein, a plurality of rotation grooves 11 are the annular around the axis of fixing base 1 and distribute, and a plurality of rotation grooves 11 are close to the edge of fixing base 1 to do benefit to and be connected with fixed cutting 3. The top of fixed cutting 3 rotates when rotating groove 11, and the cell wall through rotating groove 11 can also restrict the outer angle of rotation of fixed cutting 3, avoids fixed cutting 3 to rotate excessively to more do benefit to and fix explosive charging bucket 2.
Preferably, the fixed pivot that is equipped with in the top of a plurality of fixed slips 3, be equipped with in a plurality of rotation grooves 11 with the commentaries on classics hole of pivot adaptation, a plurality of fixed slips 3 are connected with fixing base 1 rotation through corresponding pivot and commentaries on classics hole cooperation.
Wherein, the both sides on the top of fixed cutting 3 all are equipped with the pivot, and all are equipped with on the both sides inner wall of rotation groove 11 and change the hole, and the pivot rotates and inserts in changeing the hole for the axis of fixed cutting 3 relative pivot rotates, thereby does benefit to the rotation of fixed cutting 3.
Preferably, the present embodiment further comprises a locking component for locking the plurality of fixing inserts 3, and the locking component is detachably connected with the bottom end of the medicine charging barrel 2. Can lock a plurality of fixed cutting 3 earlier through the locking part that sets up to the convenient and easy position of adjusting explosive barrel 2 in the deep hole, when putting the medicine, can the round trip movement explosive barrel 2, the condition by fixed can not appear, when needs fixed explosive barrel 2, control locking part at this moment and loosen a plurality of fixed cutting 3 and can realize fixing, it is more convenient to use.
Preferably, in this embodiment, the locking part includes a support 5 and a locking ring 6, a sliding groove 14 is provided at the top end of the support 5, the locking ring 6 is slidably provided in the sliding groove 14 and sleeved on the outer walls of the plurality of fixed inserts 3, a pulling cable 8 for pulling the locking ring 6 is provided on the locking ring 6, and the locking ring 6 is pulled by the pulling cable 8 to slide into the sliding groove 14 to be separated from the plurality of fixed inserts 3.
Wherein the support seat 5 is cylindrical and horizontally arranged, and the top end of the support seat 5 is provided with a circular sliding groove 14, so that the locking ring 6 can slide into the sliding groove 14. The locking ring 6 is horizontally arranged, the bottom end of the locking ring 6 is located in the sliding groove 14, the top end of the locking ring is in contact with the fixed inserting strip 3, and the fixed inserting strip 3 is limited to be close to the outer side wall of the medicine charging barrel 2, so that the medicine charging barrel 2 can move up and down in a deep hole. When needs fixed dress explosive barrel 2, through pulling cable 8 for locking ring 6 slides in to slip recess 14, and fixed cutting 3 is no longer restricted by locking ring 6 this moment, and fixed cutting 3 expandes into the scattering form under the spring action of corresponding spring 4, with the soil contact of deep hole inner wall, thereby fixed dress explosive barrel 2, it is more convenient in the use, the fault-tolerant rate of operation is higher.
Preferably, in this embodiment, the support seat 5 is provided with a through hole for the cable 8 to pass through, and one end of the cable 8 passes through the through hole. Through the through-hole that sets up can make things convenient for cable 8 to pass, does benefit to pulling cable 8 and drives locking ring 6 and remove.
Preferably, in this embodiment, the bottom end of the supporting seat 5 is provided with a connector 7. The connecting head 7 through setting up can conveniently place the body of rod with the outside and be connected to conveniently drive supporting seat 5 and explosive charging barrel 2 and remove in the deep hole. The connector 7 may be a threaded sleeve.
Preferably, in this embodiment, be equipped with a plurality of plug bushes 12 in the sliding groove 14, the bottom of explosive cartridge 2 is equipped with the inserted bar 13 with a plurality of plug bushes 12 adaptations, and supporting seat 5 is connected with explosive cartridge 2 can dismantle through the cooperation of inserted bar 13 with plug bush 12. Wherein, the plug bush 12 is 4, and the axis of going around supporting seat 5 is the annular and distributes, and corresponding inserted bar 13 is four, also is the annular and distributes, through inserting inserted bar 13 in the intubate cover that corresponds, realizes being connected of supporting seat 5 and explosive charging barrel 2, when needs separation, pulls out supporting seat 5 hard and can separate supporting seat 5 and explosive charging barrel 2.
Preferably, in this embodiment, a medicine charging cavity 9 is arranged in the medicine charging barrel 2, and a medicine charging hole 10 communicated with the medicine charging cavity 9 is arranged on the fixing base 1. Gunpowder can be conveniently put in through the arranged powder charging hole 10 and the powder charging inner cavity 9, and the gunpowder is protected.
When this embodiment is used specifically, pack powder into powder charge inner chamber 9 from powder charge hole 10, be connected connector 7 with the outside body of rod, stretch into the deep hole with powder charge bucket 2 and supporting seat 5 through the body of rod, after reaching suitable position, pulling cable 8, make locking ring 6 slide in sliding groove 14, a plurality of fixed cutting 3 pop out under the effect of spring 4 this moment, the card is gone into on the deep hole inner wall, and finally, the pulling body of rod, make supporting seat 5 and powder charge bucket 2 separation, take out supporting seat 5 and the body of rod from the deep hole, accomplish and put the medicine. When the pulling body of rod, because pulling force, can make the position that fixed cutting 3 inserted in the deep hole deeper, it is better to the fixed effect of explosive charging barrel 2.
In the description of the present invention, it is to be understood that the terms "center", "length", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "inner", "outer", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (10)
1. The utility model provides a deep hole broken top blasting puts medicine device which characterized in that includes:
a fixed seat (1);
the top end of the medicine charging barrel (2) is fixedly connected with the bottom end of the fixed seat (1);
a plurality of fixed cutting (3), it is a plurality of fixed cutting (3) wind the axis of explosive barrel (2) is cyclic annular and distributes on the lateral wall of explosive barrel (2), and is a plurality of the top of fixed cutting (3) all with fixing base (1) rotates to be connected, the lateral wall of explosive barrel (2) is equipped with and is used for promoting a plurality of the bottom of fixed cutting (3) is kept away from the elastic component of explosive barrel (2), through the elastic component promotes a plurality of the bottom of fixed cutting (3) is kept away from explosive barrel (2) to will with the contact of deep hole inner wall explosive barrel (2) are fixed.
2. The explosive discharging device for deep hole top breaking blasting according to claim 1, wherein the elastic member is a plurality of springs (4), the plurality of springs (4) are in one-to-one correspondence with the plurality of fixed cuttings (3), one end of each of the plurality of springs (4) is fixedly connected with the outer side wall of the explosive barrel (2), and the other end of each of the plurality of springs is fixedly connected with the bottom end of the corresponding fixed cuttings (3).
3. The explosive discharging device for deep hole top breaking blasting according to claim 1, wherein a plurality of rotating grooves (11) are formed at the bottom end of the fixed seat (1), the plurality of rotating grooves (11) correspond to the plurality of fixed cuttings (3) one by one, and the top ends of the plurality of fixed cuttings (3) are rotatably arranged in the corresponding rotating grooves (11).
4. The explosive discharging device for deep hole top breaking blasting according to claim 3, wherein a rotating shaft is fixedly arranged at the top end of the plurality of fixed cutting slips (3), a rotating hole matched with the rotating shaft is arranged in the plurality of rotating grooves (11), and the plurality of fixed cutting slips (3) are rotatably connected with the fixed seat (1) through matching of the rotating shaft and the rotating hole.
5. The explosive discharging device for deep hole top breaking blasting according to claim 1, further comprising a locking member for locking a plurality of said fixing slips (3), wherein said locking member is detachably connected to the bottom end of said explosive containing barrel (2).
6. The explosive discharging device for deep hole top breaking blasting according to claim 5, wherein the locking component comprises a supporting seat (5) and a locking ring (6), a sliding groove (14) is formed at the top end of the supporting seat (5), the locking ring (6) is slidably arranged in the sliding groove (14) and sleeved on the outer wall of the plurality of fixing inserts (3), a pulling rope (8) for pulling the locking ring (6) is arranged on the locking ring (6), and the locking ring (6) is pulled by the pulling rope (8) to slide into the sliding groove (14) to be separated from the plurality of fixing inserts (3).
7. The explosive discharging device for deep hole top breaking blasting according to claim 6, wherein a through hole for the stay (8) to pass through is formed in the supporting seat (5), and one end of the stay (8) passes through the through hole.
8. The explosive discharging device for deep hole top breaking blasting according to claim 7, wherein the bottom end of the supporting seat (5) is provided with a connector (7).
9. The explosive discharging device for deep hole top breaking blasting according to claim 8, wherein a plurality of inserting tubes (12) are arranged in the sliding groove (14), an inserting rod (13) matched with the plurality of inserting tubes (12) is arranged at the bottom end of the explosive charging barrel (2), and the supporting seat (5) is detachably connected with the explosive charging barrel (2) through the matching of the inserting rod (13) and the inserting tubes (12).
10. The explosive discharging device for deep-hole top-breaking blasting according to any one of claims 1 to 9, wherein an explosive charging cavity (9) is arranged in the explosive charging barrel (2), and an explosive charging hole (10) communicated with the explosive charging cavity (9) is formed in the fixed seat (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120486554.2U CN214537627U (en) | 2021-03-08 | 2021-03-08 | Explosive discharging device for deep hole top breaking blasting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120486554.2U CN214537627U (en) | 2021-03-08 | 2021-03-08 | Explosive discharging device for deep hole top breaking blasting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214537627U true CN214537627U (en) | 2021-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120486554.2U Expired - Fee Related CN214537627U (en) | 2021-03-08 | 2021-03-08 | Explosive discharging device for deep hole top breaking blasting |
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| CN (1) | CN214537627U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114413701A (en) * | 2022-02-18 | 2022-04-29 | 安徽理工大学 | Blasting tube fixing mechanism and method for mine deep hole blasting |
-
2021
- 2021-03-08 CN CN202120486554.2U patent/CN214537627U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114413701A (en) * | 2022-02-18 | 2022-04-29 | 安徽理工大学 | Blasting tube fixing mechanism and method for mine deep hole blasting |
| CN114413701B (en) * | 2022-02-18 | 2023-09-01 | 安徽理工大学 | Blasting tube fixing mechanism and blasting tube fixing method for deep hole blasting of mine |
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Granted publication date: 20211029 |