CN112902777A - Safe type coal mining is with blasting fixing device - Google Patents
Safe type coal mining is with blasting fixing device Download PDFInfo
- Publication number
- CN112902777A CN112902777A CN202110023312.4A CN202110023312A CN112902777A CN 112902777 A CN112902777 A CN 112902777A CN 202110023312 A CN202110023312 A CN 202110023312A CN 112902777 A CN112902777 A CN 112902777A
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- groove
- rod
- fixed
- baffle
- fixing device
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/04—Particular applications of blasting techniques for rock blasting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D5/00—Safety arrangements
- F42D5/04—Rendering explosive charges harmless, e.g. destroying ammunition; Rendering detonation of explosive charges harmless
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Catching Or Destruction (AREA)
Abstract
The invention discloses a safety type blasting fixing device for coal mining, which comprises an installation barrel, an air bag, a protective net and a reset spring, wherein a guide groove is formed in the installation barrel, a movable groove is formed in the inner wall of the installation barrel, a positioning rod is connected to the outer side of the fixing rod, a telescopic groove is reserved in the outer side of the installation barrel, a retraction groove is formed in the outer side of the installation barrel, a retraction groove is reserved on the side of the retraction rod, a first baffle is fixed on the inner wall of the end part of the installation barrel, a second baffle is fixed on the inner wall of a baffle ring, the reset spring is fixed between the positioning rod and the bottom of the positioning groove and between the telescopic rod and the bottom of the telescopic groove, and a contact plate is fixed on the baffle ring in a hollow manner. This safe type is blasting fixing device for coal mining carries out fixed mounting to blasting pipe and device from inside and outside, can shelter from the rubble that the hole outside splashes when blasting simultaneously.
Description
Technical Field
The invention relates to the technical field of coal mining, in particular to a safety type blasting fixing device for coal mining.
Background
The coal mine is an important energy source in China, the application is very wide, in the coal mine exploitation, fixed-point punching is generally needed to be carried out on a rock wall in advance, then blasting exploitation is carried out through a blasting tube, in order to improve the blasting efficiency of the blasting tube, a pre-fixing device is generally needed to be adopted for hole plugging, the patent number (CN 107976129B) relates to a coal mine open blasting blasthole filling and fixing device, and the coal mine open blasthole filling and fixing device comprises a support ring, an arc-shaped clamping plate, an elastic steel wire net, a connecting plate, a connecting ring, a guide sleeve, a support arm, an elastic baffle plate, a fastening screw sleeve, a fixing ring, a hollow guide shaft and a sliding disc, but the coal mine open blasthole filling and fixing:
according to the coal mine open blasting blasthole filling and fixing device, multiple layers of stones and sands are filled inside the device to improve compactness, but the blasting tube is not fixed, so that the placement of the blasting tube can be influenced when the sands are filled, and the compactness of sand filling can be influenced because gaps between the sands and the blasting tube are not controllable;
meanwhile, the coal mine open blasting blasthole filling and fixing device is lack of protection for the outside of blasthole holes, and when blasting work is carried out, the broken stones splashed outside the holes still have the risk of smashing equipment or personnel.
In order to solve the above problems, innovative design based on the original pre-fixing device is urgently needed.
Disclosure of Invention
The invention aims to provide a safe blasting fixing device for coal mining, which aims to solve the problems that the prior art provides a pre-fixing device, the fixing of a blasting tube is lacked, the gap between gravel and the blasting tube is uncontrollable, the protection of the outside of a blast hole is lacked, and the risk of damaging equipment or personnel by broken stones splashed outside the hole still exists.
In order to achieve the purpose, the invention provides the following technical scheme: a safety type blasting fixing device for coal mining comprises an installation barrel, an air bag, a protective net and a reset spring, wherein a guide groove is formed in the installation barrel, a guide ring is placed in the guide groove, a guide pillar is fixed at one end of the guide ring, one end of the guide pillar penetrates through the guide groove and is located at the edge end of the installation barrel, a movable groove is formed in the inner wall of the installation barrel, a fixed rod is placed in the movable groove, one end of the fixed rod penetrates through the movable groove and is connected with a fixed piece, the outer side of the fixed rod is connected with a positioning rod, the positioning rod is located in the positioning groove, the positioning groove is formed in the inner wall of the movable groove, a telescopic groove is reserved on the outer side of the installation barrel, a telescopic rod is installed in the telescopic groove, an outer supporting piece is fixed in the telescopic groove, a retractable groove is formed in the outer, the avris of receiving and releasing pole is reserved to have and is received the groove, and receives and is connected with through tape measure spring shaft and wind the winding stem in the inslot to it has the protection network to wind to twine on the winding stem, and the couple is connected between one side of protection network and one side of receiving and releasing pole, be fixed with first baffle on the inner wall of installation section of thick bamboo tip, and seted up the side channel on the inner wall of installation section of thick bamboo tip to the retaining ring has been placed to the side channel, and the retaining ring is located the outside of first baffle, be fixed with the second baffle on the inner wall of retaining ring, and the inboard of second baffle is connected with the knob, between the bottom of locating lever and constant head tank, all be fixed with reset spring between the bottom in telescopic link and flexible groove, the fretwork is fixed with the.
Preferably, a push rod is connected between the guide ring and the fixing rod through a shaft, the push rod is designed to be of an L-shaped structure, and the guide ring is attached to the guide groove and is connected with the guide groove in a rotating mode.
Preferably, the fixing pieces are designed to be arc-shaped structures, the fixing pieces are perpendicular to the fixing rod, and the number of the fixing pieces is 6.
Preferably, the positioning rod forms an elastic sliding structure through the reset spring and the positioning groove, and the positioning rod is symmetrically arranged on two sides of the positioning rod.
Preferably, the telescopic rod and the telescopic groove are attached to each other and slide, and the side faces of the telescopic rod and the side faces of the fixing rod are distributed in a staggered mode.
Preferably, one end of the outer supporting sheet is designed into an arc-shaped structure which inclines downwards, and air bags are bonded to the top of the outer supporting sheet at equal intervals.
Preferably, the number of the retractable rods is 4, and the retractable rods and the outer supporting sheet are distributed in an equal-angle staggered manner.
Preferably, the first baffle and the second baffle are both designed to be of a fan-shaped structure, and the cross-sectional area of the first baffle is equal to the cross-sectional area between every two adjacent second baffles.
Preferably, a limit rod penetrates through the side groove and the retraction groove through a reset spring, one end of the limit rod is located in the limit groove, and the limit groove is arranged at the bottom edge of the retraction rod.
Preferably, one end of the limiting rod is designed to be a circular truncated cone-shaped structure, and the other end of the limiting rod is clamped with the limiting groove.
Compared with the prior art, the invention has the beneficial effects that: the safe blasting fixing device for coal mining;
1. the guide ring can drive the fixed rod to slide under the action of a push rod of an L-shaped structure, the fixed rod and the fixed pieces can be conveniently driven to shrink outwards by rotating the guide ring, meanwhile, under the action of elastic tension of a reset spring, when the guide ring loses external guiding force, the fixed rod and the fixed pieces are driven to shrink inwards by the pulling of the reset spring, the blasting tube is clamped and fixed through six fixed pieces, one end of an externally arranged outer supporting piece is designed into an arc-shaped structure which is inclined downwards, when the mounting cylinder is inserted into the hole, the outer supporting piece is stressed to shrink, the telescopic rod slides elastically in the telescopic groove in cooperation with the use of the reset spring, the position of the outer supporting piece is adjusted in a self-adaptive mode according to the diameter of the hole, the mounting cylinder is fixed in the hole through the cooperation of the outer supporting piece and an air bag on the;
2. by arranging the first baffle and the second baffle which are of the fan-shaped structures, when the first baffle and the second baffle are mutually overlapped, stone and gravel can be filled in the installation barrel through a gap between every two adjacent first baffles, the interior is kept compact, meanwhile, the first baffle and the second baffle can be staggered through rotating the baffle ring, the opening at the end part of the installation barrel is plugged, and the internal filler is prevented from falling;
3. through setting up the contact plate on the fender ring, the contact plate is when following the fender ring and rotate, the gag lever post contact for round platform shape structure with the tip, can drive the gag lever post and slide to receiving and releasing groove department, make the one end of gag lever post can block into the spacing inslot of receiving and releasing pole bottom edge, fix the position of receiving and releasing pole, be convenient for pull out the protection network on the winding rod in four receiving and releasing poles and through couple reciprocal anchorage, constitute the netted protective area of a complete ring, the hole outer end rubble splashes when effectively avoiding blasting.
Drawings
FIG. 1 is a schematic front sectional view of the present invention;
FIG. 2 is an enlarged view of the structure at A in FIG. 1 according to the present invention;
FIG. 3 is a schematic side sectional view of the present invention;
fig. 4 is a schematic view of the front side unfolding structure of the protection net of the present invention;
FIG. 5 is a schematic side sectional view of the retractable rod of the present invention;
FIG. 6 is a schematic front view of the retainer ring of the present invention;
FIG. 7 is an enlarged view of the structure at B in FIG. 5 according to the present invention;
FIG. 8 is a schematic perspective view of a stop lever according to the present invention;
FIG. 9 is a schematic side view of the retractable rod of the present invention.
In the figure: 1. mounting the cylinder; 2. a guide groove; 3. a guide ring; 4. a push rod; 5. fixing the rod; 6. a movable groove; 7. a fixing sheet; 8. positioning a rod; 9. positioning a groove; 10. a telescopic groove; 11. a telescopic rod; 12. an outer support sheet; 13. an air bag; 14. a retraction slot; 15. a rod is retracted and released; 16. a receiving groove; 17. a tape spring; 18. a winding rod; 19. a protective net; 20. a first baffle plate; 21. a side groove; 22. a baffle ring; 23. a second baffle; 24. a limiting rod; 25. a limiting groove; 26. a return spring; 27. a guide post; 28. a knob; 29. a contact plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-9, the present invention provides a technical solution: a safe blasting fixing device for coal mining comprises an installation barrel 1, a guide groove 2, a guide ring 3, a push rod 4, a fixing rod 5, a movable groove 6, a fixing piece 7, a positioning rod 8, a positioning groove 9, a telescopic groove 10, a telescopic rod 11, an outer supporting piece 12, an air bag 13, a retraction groove 14, a retraction rod 15, a retraction groove 16, a tape spring 17, a winding rod 18, a protective net 19, a first baffle 20, a side groove 21, a baffle ring 22, a second baffle 23, a limiting rod 24, a limiting groove 25, a reset spring 26, a guide pillar 27, a knob 28 and a contact plate 29, wherein the guide groove 2 is formed in the installation barrel 1, the guide ring 3 is placed in the guide groove 2, the guide pillar 27 is fixed at one end of the guide ring 3, one end of the guide pillar 27 penetrates through the guide groove 2 and is located at the edge end of the installation barrel 1, the movable groove 6 is formed in the inner wall of the installation barrel 1, the fixing rod 5 is placed in the movable groove 6, one, the outer side of the fixed rod 5 is connected with a positioning rod 8, the positioning rod 8 is positioned in a positioning groove 9, the positioning groove 9 is arranged on the inner wall of the movable groove 6, a telescopic groove 10 is reserved on the outer side of the installation cylinder 1, a telescopic rod 11 is installed in the telescopic groove 10, one end of the telescopic rod 11 penetrates through the telescopic groove 10 and is fixed with an outer supporting sheet 12, a retraction groove 14 is formed in the outer side of the installation cylinder 1, a retraction rod 15 is connected in the retraction groove 14, a retraction groove 16 is reserved on the side of the retraction rod 15, a winding rod 18 is connected in the retraction groove 16 through a flexible rule spring 17 shaft, a protective net 19 is wound on the winding rod 18, a hook is connected between one side of the protective net 19 and one side of the retraction rod 15, a first baffle plate 20 is fixed on the inner wall of the end part of the installation cylinder 1, a side groove 21 is formed on the inner wall of the end part of the installation cylinder 1, a baffle ring 22 is arranged in the side, a second baffle plate 23 is fixed on the inner wall of the baffle ring 22, the inner side of the second baffle plate 23 is connected with a knob 28, return springs 26 are fixed between the positioning rod 8 and the bottom of the positioning groove 9 and between the telescopic rod 11 and the bottom of the telescopic groove 10, and a contact plate 29 is fixed on the baffle ring 22 in a hollow manner;
a push rod 4 is connected between the guide ring 3 and the fixed rod 5 in a shaft mode, the push rod 4 is in an L-shaped structural design, the guide ring 3 is connected with the guide groove 2 in a fit and rotating mode, when the guide ring 3 is driven to rotate in the guide groove 2 through the guide pillar 27, the guide ring 3 can drive the fixed rod 5 to slide in the movable groove 6 through the push rod 4, and the positions of the fixed rod 5 and the fixed piece 7 are adjusted;
the fixing pieces 7 are designed to be arc-shaped structures, the fixing pieces 7 are perpendicular to the fixing rod 5, and 6 fixing pieces 7 are symmetrically arranged on the central axis of the installation barrel 1, so that the blasting tube is conveniently fixed in the installation barrel 1 by matching the 6 fixing pieces 7 with the vertical movement of the fixing rod 5;
the positioning rod 8 forms an elastic sliding structure through the position between the reset spring 26 and the positioning groove 9, the positioning rod 8 is symmetrically arranged on two sides of the fixing rod 5, when the fixing rod 5 slides in the movable groove 6, the positioning rod 8 slides in the positioning groove 9 along with the elastic pulling force of the reset spring 26, acting force is provided for the fixing rod 5 and the fixing piece 7, and the blasting tube is convenient to fix;
the telescopic rod 11 and the telescopic groove 10 are attached to each other and slide, the side surface of the telescopic rod 11 and the side surface of the fixed rod 5 are distributed in a staggered manner, one end of the outer supporting piece 12 is in an inclined downward arc-shaped structural design, the air bags 13 are bonded on the top of the outer supporting piece 12 at equal intervals, when the installation cylinder 1 is inserted into a hole formed in a mine rock wall, the outer supporting piece 12 with the arc-shaped inclined end part is in contact with the inner wall of the hole, so that the outer supporting piece 12 can drive the telescopic rod 11 to slide in the telescopic groove 10 according to the size of the hole, the telescopic rod 11 and the outer supporting piece 12 are supported by matching with the elastic force of the return spring 26, the installation cylinder 1 is conveniently supported and fixed in the hole through the outer supporting piece 12, the air bags 13 are used in a matched manner, the contact area with the hole of the inner wall is increased under the elastic action of the air bags 13, the, the installation barrel 1 and the blasting tube can be integrally fixed from inside and outside through multi-point fixation;
the number of the retractable rods 15 is 4 symmetrically about the central axis of the mounting cylinder 1, the retractable rods 15 and the outer supporting pieces 12 are distributed in an equal-angle staggered manner, before the mounting cylinder 1 is inserted into the hole, the retractable rods 15 can be conveniently rotated out of the retractable grooves 14, the protective nets 19 in the retractable rods 15 are pulled out, and the protective nets 19 on the 4 retractable rods 15 are mutually fixed, so that the outside of the hole of the rock wall is protected, and the splashing of broken stones outside the rock wall during blasting is effectively avoided;
the first baffle plate 20 and the second baffle plate 23 are both designed in a fan-shaped structure, the cross-sectional area of the first baffle plate 20 is equal to the cross-sectional area between the adjacent 2 second baffle plates 23, the baffle ring 22 rotates in the side groove 21, and the position of the second baffle plate 23 is adjusted, so that when the second baffle plate 23 is overlapped with the first baffle plate 20, a gap is reserved to facilitate filling protection of stones and gravels and the like, and meanwhile, when the second baffle plate 23 is staggered with the first baffle plate 20, the mounting cylinder 1 can be plugged to prevent the stones and the gravels from falling out, and further, the fixing and the closed mounting of the internal blasting tube are completed;
the side groove 21 with receive and release between the groove 14 and run through reset spring 26 and be provided with gag lever post 24, and the one end of gag lever post 24 is located the spacing groove 25, and the bottom edge of receiving and releasing the pole 15 is seted up to the spacing groove 25, the one end of gag lever post 24 is round platform shape structural design, and block each other between the other end of gag lever post 24 and the spacing groove 25, when the fender ring 22 that rotates the side groove 21 carries out the shutoff to the installation section of thick bamboo 1, when contact plate 29 on the fender ring 22 and the contact of gag lever post 24 tip, its inclined plane atress is to receiving and releasing groove 14 and removing, make the gag lever post 24 card go into receive and release the limiting groove 25 of pole 15 bottom edge, receive and release the pole 15 to the expansion and.
The working principle is as follows: when the safety type blasting fixing device for coal mining is used, as shown in fig. 1-3, firstly, the guide ring 3 is driven to rotate in the guide groove 2 through the guide post 27, the guide ring 3 drives the fixing rod 5 to slide in the movable groove 6 through the push rod 4, the positions of the fixing rod 5 and the fixing piece 7 are adjusted to enable the fixing piece 7 to shrink outwards, then the blasting tube is inserted into the installation barrel 1, then the guide post 27 is loosened, at the moment, the fixing rod 5 and the fixing piece 7 are not pulled by external force, the positioning rod 8 slides inwards at the positioning groove 9 by matching with the elastic pulling force of the reset spring 26, further, the fixing rod 5 and the fixing piece 7 are driven to shrink inwards, the blasting tube is clamped and fixed through the 6 fixing pieces 7, then, the installation barrel 1 is inserted into a hole formed in a rock wall of a mine, the outer support piece 12 with the arc-shaped inclined end part is contacted with the inner wall of the hole, so that the outer support, the expansion rod 11 and the outer supporting sheet 12 are supported by matching with the elastic force of the return spring 26, so that the mounting cylinder 1 is supported and fixed in the hole through the outer supporting sheet 12, and meanwhile, the contact area between the expansion rod and the inner wall of the hole is increased under the elastic action of the air bag 13 by matching with the use of the air bag 13, the fixing effect is improved, the fixing operation of the blasting tube and the mounting cylinder 1 is completed, and the blasting tube is fixed in the hole;
then, as shown in fig. 1 and fig. 4-9, before the installation barrel 1 is inserted into a hole formed in a rock wall of a mine, the retractable rod 15 is rotated out of the retractable groove 14, the protective net 19 in the retractable rod 15 is pulled out and fixed with each other through the protective nets 19 on the 4 retractable rods 15 to form an annular protective space, the retractable rod 15 is positioned outside the hole, the protective net 19 is rotated on the winding rod 18 and matched with the use of the tape spring 17, during production, the protective net 19 can be retracted in the retractable groove 16, a gap is reserved when the second baffle 23 is overlapped with the first baffle 20, stones and gravels are filled into the installation barrel 1 to protect the blasting tube, and when the second baffle 23 is staggered with the first baffle 20, the installation barrel 1 is blocked to prevent the stones from falling out, so as to complete the fixed and closed installation of the internal blasting tube, when the knob 28 rotates the baffle ring 22 in the side groove 21 to plug the installation cylinder 1, when the contact plate 29 on the baffle ring 22 is in contact with the end of the limit rod 24, the inclined plane is stressed to move towards the retraction groove 14, so that the limit rod 24 is clamped into the limit groove 25 at the bottom edge of the retraction rod 15, the extended retraction rod 15 is fixed, and conversely, when the baffle ring 22 is continuously rotated to enable the first baffle plate 20 and the second baffle plate 23 to be superposed, the contact plate 29 loses the pressure on the limit rod 24, the limit rod 24 returns to the original position under the action of the reset spring 26 and is separated from the limit groove 25, and retraction of the retraction rod 15 is facilitated.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (10)
1. The utility model provides a safe type coal mining is with blasting fixing device, is including installation section of thick bamboo (1), gasbag (13), protection network (19) and reset spring (26), its characterized in that: the installation barrel is characterized in that a guide groove (2) is formed in the installation barrel (1), a guide ring (3) is arranged in the guide groove (2), a guide post (27) is fixed at one end of the guide ring (3), one end of the guide post (27) penetrates through the guide groove (2) and is located at the edge end of the installation barrel (1), a movable groove (6) is formed in the inner wall of the installation barrel (1), a fixed rod (5) is arranged in the movable groove (6), one end of the fixed rod (5) penetrates through the movable groove (6) and is connected with a fixed piece (7), a positioning rod (8) is connected to the outer side of the fixed rod (5), the positioning rod (8) is located in a positioning groove (9), the positioning groove (9) is formed in the inner wall of the movable groove (6), a telescopic groove (10) is reserved on the outer side of the installation barrel (1), a telescopic rod (11) is installed in the telescopic groove (10), and an outer supporting piece (12) is fixed at, the outer side of the mounting cylinder (1) is provided with a retraction groove (14), a retraction rod (15) is connected with the inner shaft of the retraction groove (14), a retraction groove (16) is reserved on the side of the retraction rod (15), a winding rod (18) is connected in the retraction groove (16) through a tape spring (17) in a shaft mode, a protective screen (19) is wound on the winding rod (18), one side of the protective screen (19) is connected with one side of the retraction rod (15) in a hanging mode, a first baffle (20) is fixed on the inner wall of the end portion of the mounting cylinder (1), a side groove (21) is formed in the inner wall of the end portion of the mounting cylinder (1), a baffle ring (22) is placed in the side groove (21), the baffle ring (22) is located on the outer side of the first baffle (20), a second baffle (23) is fixed on the inner wall of the baffle ring (22), and a knob (28) is connected to the inner side of the second baffle (23), reset springs (26) are fixed between the positioning rod (8) and the bottom of the positioning groove (9) and between the telescopic rod (11) and the bottom of the telescopic groove (10), and a contact plate (29) is fixed on the baffle ring (22) in a hollow mode.
2. The safety type blasting fixing device for coal mining of claim 1, wherein: the shaft is connected with a push rod (4) between the guide ring (3) and the fixed rod (5), the push rod (4) is designed to be of an L-shaped structure, and the guide ring (3) is attached to the guide groove (2) and is connected with the guide groove in a rotating mode.
3. The safety type blasting fixing device for coal mining of claim 1, wherein: the fixing plate (7) is designed to be of an arc-shaped structure, the fixing plate (7) and the fixing rod (5) are perpendicular to each other, and 6 fixing plates (7) are symmetrically arranged on the central axis of the installation barrel (1).
4. The safety type blasting fixing device for coal mining of claim 1, wherein: the positioning rod (8) forms an elastic sliding structure with the positioning groove (9) through the reset spring (26), and the positioning rod (8) is symmetrically arranged on two sides of the fixing rod (5).
5. The safety type blasting fixing device for coal mining of claim 1, wherein: the telescopic rod (11) and the telescopic groove (10) are attached to each other and slide, and the side face of the telescopic rod (11) and the side face of the fixed rod (5) are distributed in a staggered mode.
6. The safety type blasting fixing device for coal mining of claim 1, wherein: one end of the outer supporting sheet (12) is designed into an arc structure which inclines downwards, and air bags (13) are bonded to the top of the outer supporting sheet (12) at equal intervals.
7. The safety type blasting fixing device for coal mining of claim 1, wherein: the number of the retractable rods (15) is 4 about the central axis of the mounting cylinder (1), and the retractable rods (15) and the outer supporting sheets (12) are distributed in an equal-angle staggered manner.
8. The safety type blasting fixing device for coal mining of claim 1, wherein: the first baffle (20) and the second baffle (23) are both designed to be of fan-shaped structures, and the cross-sectional area of the first baffle (20) is equal to that between the adjacent 2 second baffles (23).
9. The safety type blasting fixing device for coal mining of claim 1, wherein: a limit rod (24) penetrates through the side groove (21) and the retraction groove (14) through a return spring (26), one end of the limit rod (24) is located in the limit groove (25), and the limit groove (25) is arranged at the bottom edge of the retraction rod (15).
10. The safety type blasting fixing device for coal mining of claim 9, wherein: one end of the limiting rod (24) is designed to be of a circular truncated cone-shaped structure, and the other end of the limiting rod (24) is clamped with the limiting groove (25) mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110023312.4A CN112902777A (en) | 2021-01-08 | 2021-01-08 | Safe type coal mining is with blasting fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110023312.4A CN112902777A (en) | 2021-01-08 | 2021-01-08 | Safe type coal mining is with blasting fixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112902777A true CN112902777A (en) | 2021-06-04 |
Family
ID=76112248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110023312.4A Withdrawn CN112902777A (en) | 2021-01-08 | 2021-01-08 | Safe type coal mining is with blasting fixing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112902777A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113790651A (en) * | 2021-09-23 | 2021-12-14 | 中铁三局集团有限公司 | Blasting protection device and method for manual hole digging pile |
| CN114777588A (en) * | 2022-04-15 | 2022-07-22 | 北京科技大学 | Presplitting blasting slit pipe device |
| CN115854806A (en) * | 2022-12-29 | 2023-03-28 | 福建江夏学院 | Engineering blasting tube fixing device |
-
2021
- 2021-01-08 CN CN202110023312.4A patent/CN112902777A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113790651A (en) * | 2021-09-23 | 2021-12-14 | 中铁三局集团有限公司 | Blasting protection device and method for manual hole digging pile |
| CN113790651B (en) * | 2021-09-23 | 2023-03-03 | 中铁三局集团有限公司 | Blasting protection device and method for manual hole digging pile |
| CN114777588A (en) * | 2022-04-15 | 2022-07-22 | 北京科技大学 | Presplitting blasting slit pipe device |
| CN114777588B (en) * | 2022-04-15 | 2023-09-15 | 北京科技大学 | Presplitting blasting slit pipe device |
| CN115854806A (en) * | 2022-12-29 | 2023-03-28 | 福建江夏学院 | Engineering blasting tube fixing device |
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Application publication date: 20210604 |