CN212512760U - Deep hole step blasting air spacer - Google Patents
Deep hole step blasting air spacer Download PDFInfo
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- CN212512760U CN212512760U CN202021286284.2U CN202021286284U CN212512760U CN 212512760 U CN212512760 U CN 212512760U CN 202021286284 U CN202021286284 U CN 202021286284U CN 212512760 U CN212512760 U CN 212512760U
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- guide rod
- column casing
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Abstract
The utility model relates to a deep hole step blasting air space device belongs to blasting engineering auxiliary device technical field. The utility model comprises a column casing and a guide rod, wherein the guide rod is arranged inside the column casing and is fixedly connected with the bottom position through a connecting piece, a plurality of partition plates are sleeved on the periphery of the guide rod, the middle part of each partition plate is provided with a guide hole matched with the outer surface of the guide rod, and the partition plates, the column casing and the guide rod are arranged along the same central axis; the outer diameter specifications of each layer of partition board are different in size, and the outer diameter of the partition board tends to increase in the direction from bottom to top; the outer edge of the partition plate is lapped on the inner wall of the column casing, and the inner wall of the column casing is an inverted conical surface or a multi-layer step surface structure so that the partition plate is arranged at intervals along the axial direction of the guide rod; when the inner wall of the column barrel adopts an inverted conical surface structure, the outer side of the partition plate is arranged into a conical surface matched with the inner wall of the column barrel. The utility model discloses low cost, convenient operation can improve powder charge efficiency and reduce the blasting cost.
Description
Technical Field
The utility model relates to a deep hole step blasting air space device belongs to blasting engineering auxiliary device technical field.
Background
Drilling blasting is a common technology for stone excavation and is widely applied to the fields of water conservancy and hydropower, mines, traffic and the like. The traditional continuous columnar charging has the defects of high unit consumption, overhigh initial detonation pressure and excessive rock crushing, so that the effective energy utilization rate of the explosive is low, large blocks and roots are easy to generate, and a plurality of problems such as blasting vibration damage are caused. The air interval charging technology can reduce the initial peak pressure of the explosive to rocks around the blast hole, so that the explosive pressure in the hole is more uniformly distributed along the axial direction of the blast hole, thereby reducing or avoiding the excessive crushing of the surrounding rocks near the blast hole, enlarging the range of a fracture area, improving the effective utilization rate of explosive blasting energy, reducing the blasting cost and controlling the blasting damage. The air spacer means is a spacer arranged between the air column and the explosive and between the air column and the stemming to bear the weight of the explosive and the stemming. The air spacer commonly used at present is an air bag, and has high unit price and complex operation, thereby reducing the charging efficiency and increasing the blasting cost.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the deep hole step blasting air spacer is low in cost and convenient to operate, and blasting cost is reduced.
For solving the technical problem the utility model discloses the technical scheme who adopts is: the deep hole step blasting air spacer comprises a column casing and a guide rod, wherein the guide rod is arranged inside the column casing and fixedly connected with the column casing through a connecting piece at the bottom end position; the outer diameter specifications of each layer of partition board are different in size, and the outer diameter of the partition board tends to increase in the direction from bottom to top; the outer edge of the partition plate is lapped on the inner wall of the column casing, and the inner wall of the column casing is an inverted conical surface or a multi-layer step surface structure so that the partition plate is arranged at intervals along the axial direction of the guide rod; when the inner wall of the column barrel adopts an inverted conical surface structure, the outer side of the partition plate is arranged into a conical surface matched with the inner wall of the column barrel.
Further, the method comprises the following steps: the outer wall of the guide rod is of a cylindrical structure.
Further, the method comprises the following steps: the clapboard is provided with a gap or a hole for the detonating cord to pass through; when the clapboard is provided with a notch for the detonating cord to pass through, the notch is positioned on the hole wall of the guide hole in the middle of the clapboard.
Further, the method comprises the following steps: the detonator also comprises a detonating cord and a detonator which are connected with each other; the guide rod is of a hollow structure, and the side wall of the guide rod is provided with a slot which is arranged along the axial direction of the guide rod; the detonating cord is provided with the checkpost in the position that is close to the detonator, and after putting the detonator down, the detonator is located the outside of guide bar, and the checkpost is located the inside of guide bar, and the detonating cord extends to outside the top of guide bar along the inner chamber of guide bar.
Further, the method comprises the following steps: the detonating cord is provided with a balancing weight at a position close to the detonator, and compared with the clamp, the balancing weight is positioned at a position closer to the detonator; after the detonator is placed, the detonator and the balancing weight are both positioned on the outer side of the guide rod.
Further, the method comprises the following steps: the partition plates are uniformly arranged at intervals along the axial direction of the guide rod.
Further, the method comprises the following steps: the bottom end of the column casing is fixedly provided with a positioning seat, the positioning seat and the column casing are arranged coaxially, and the outer wall of the positioning seat is a cylindrical surface.
Further, the method comprises the following steps: the top end of the guide rod is sleeved with a positioning plate, the top end of the inner wall of the column casing is provided with a positioning step surface, the outer edge of the positioning plate is overlapped on the positioning step surface, and the outer edge of the positioning plate is attached to the inner wall of the column casing or forms clearance fit.
Further, the method comprises the following steps: the top surface of the positioning plate is provided with a handle structure.
The utility model has the advantages that: when the explosive charging process is implemented, the outer diameter of the column casing is matched with the diameter of a blast hole, the outer diameter of the top end of the column casing is slightly smaller than the diameter of the blast hole, the integral structure formed by the column casing and the guide rod is vertically placed in the center of the blast hole, then a first partition plate (the first partition plate can be a fixed structure), then explosive charging is carried out, an explosive fuse and a detonator are installed, then a second partition plate is installed, the explosive fuse penetrates through a through hole or a gap in the partition plate, then explosive charging is carried out, the explosive fuse and the detonator are installed, the process is repeated until the uppermost partition plate is installed, filling materials are loaded, and the whole explosive charging process is completed. When the positioning plate is arranged, the positioning plate is taken down before each partition plate is arranged, and after the partition plates are arranged downwards, the positioning plate is arranged to assist in positioning, so that the partition plates are placed in the middle and put in place. The utility model discloses low cost, convenient operation can improve powder charge efficiency and reduce the blasting cost.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;
FIG. 2 is a schematic structural view of a first embodiment of the present invention when no partition is installed;
fig. 3 is a schematic overall structure diagram of the first embodiment of the present invention in implementation;
FIG. 4 is a schematic structural diagram of an embodiment of a middle partition plate according to the present invention;
FIG. 5 is a schematic structural view of a second embodiment of the middle partition plate according to the present invention;
FIG. 6 is a schematic view of a third embodiment of the middle partition plate according to the present invention;
fig. 7 is a schematic diagram of a preferred arrangement of the detonating cord of the present invention;
fig. 8 is a schematic structural view of an embodiment of a positioning plate according to the present invention;
fig. 9 is a schematic structural view of a second embodiment of a middle positioning plate according to the present invention;
fig. 10 is a schematic structural diagram of a second embodiment of the present invention.
The labels in the figure are: 1-column casing, 2-partition board, 3-guide rod, 4-positioning seat, 5-detonating cord, 6-blast hole, 7-blocking section, 8-explosive charging section, 9-detonator, 10-clamp, 11-counterweight block and 12-positioning plate.
Detailed Description
For the purpose of facilitating understanding and practicing the invention, preferred embodiments of the invention are further described with reference to the accompanying drawings.
As shown in fig. 1 to 10, the deep hole step blasting air spacer of the present invention comprises a column casing 1 and a guide rod 3, wherein the guide rod 3 is arranged inside the column casing and fixedly connected to the bottom end of the column casing by a connecting member, a plurality of partition plates 2 are sleeved on the periphery of the guide rod 3, a guide hole adapted to the outer surface of the guide rod 3 is formed in the middle of each partition plate 2, and the partition plates 2, the column casing 1 and the guide rod 3 are arranged along the same central axis; the outer diameter specifications of each layer of the partition plate 2 are different in size, and the outer diameter of the partition plate 2 tends to increase in the direction from bottom to top; the outer edge of the partition board 2 is lapped on the inner wall of the column casing 1, and the inner wall of the column casing 1 is an inverted conical surface or a multi-layer step surface structure, so that the partition board 2 is arranged at intervals along the axial direction of the guide rod 3. When the inner wall of the column casing 1 adopts a multi-layer step surface structure, the structure is as shown in fig. 1 and 2. When the inner wall of the column casing 1 is formed in an inverted conical surface structure, the structure is as shown in fig. 10, and when the structure is adopted, in order to form a stable horizontal supporting structure on the top surface of the partition board 2, the partition board 2 should have a certain thickness, and the outer side thereof is set to be a conical surface adapted to the inner wall of the column casing 1.
For the guide effect of guide bar 3 and convenient processing and manufacturing, the outer wall of guide bar 3 is cylindrical structure.
In order to conveniently penetrate the detonating cord 5, the clapboard 2 is provided with a notch or a hole for the detonating cord 5 to penetrate; when the clapboard 2 is provided with a notch for the detonating cord 5 to pass through, the notch is positioned on the hole wall of the guide hole in the middle of the clapboard 2, and the structure is shown in figure 5. When the partition plate 2 is provided with a hole through which the explosion wire 5 passes, the structure thereof is as shown in fig. 6.
In order to conveniently penetrate the detonating cord 5, the utility model also provides another preferred embodiment, as shown in figures 3 and 7, the utility model also comprises the detonating cord 5 and the detonator 9 which are connected with each other when in use; the guide rod 3 is of a hollow structure, and the side wall of the guide rod is provided with a slot which is arranged along the axial direction of the guide rod 3; the detonating cord 5 is provided with a clamp 10 at a position close to the detonator 9, after the detonator 9 is released, the detonator 9 is positioned at the outer side of the guide rod 3, the clamp 10 is positioned inside the guide rod 3, and the detonating cord 5 extends to the outside of the top end of the guide rod 3 along the inner cavity of the guide rod 3. In this way, the explosion wire 5 passes through the inside of the guide bar 3, and the lowering of the partition 2 is not affected at all.
In order to facilitate the smooth lowering of the detonator 9, the detonating cord 5 is provided with a counterweight 11 at a position close to the detonator 9, and the counterweight 11 is positioned at a position closer to the detonator 9 than the clamp 10; after the detonator 9 is released, the detonator 9 and the balancing weight 11 are both positioned on the outer side of the guide rod 3. The weight 11 may generally take the form of a small ball and care should be taken to control the weight so as to avoid damage to the detonating cord 5.
In order to effectively ensure the blasting effect, the partition boards 2 are uniformly arranged along the axial direction of the guide rod 3 at intervals.
During implementation, the external diameter of the column casing 1 is matched with the diameter of the blast hole 6, the external diameter of the top end of the column casing 1 is slightly smaller than the diameter of the blast hole 6, and the centering positioning of the column casing 1 can be realized by depending on the outer wall of the top end of the column casing 1. In order to facilitate smooth transfer of the column casing 1, a positioning structure can be additionally arranged at the bottom end of the column casing 1, a positioning seat 4 is fixedly arranged at the bottom end of the column casing 1, the positioning seat 4 and the column casing 1 are coaxially arranged, and the outer wall of the positioning seat 4 is a cylindrical surface. In practice, the outer diameter of the positioning seat 4 is slightly smaller than the diameter of the blast hole 6. The positioning seat 4 can be fixedly connected to the peripheral surface of the column casing 1, also can be fixedly connected to the bottom end surface of the column casing 1, and also can make the positioning seat 4 and the column casing 1 into an integral structure.
For the baffle 2 transfers between two parties, the top cover of guide bar 3 is equipped with locating plate 12, and the inner wall top of column casing 1 is provided with the location step face, and the outer overlap joint of following of locating plate 12 is on the step face of location, and the outer edge of locating plate 12 is laminated mutually or is formed clearance fit with the inner wall of column casing 1. In implementation, before each partition plate 2 is installed, the positioning plate 12 is firstly taken down, and after the partition plate 2 is placed downwards, the positioning plate 12 is installed, so that the upper end and the lower end of the guide rod 3 are both positioned in the middle, and the partition plate 2 is ensured to be placed in the middle and placed in place.
To facilitate access to positioning plate 12, a handle structure is provided on the top surface of positioning plate 12. The handle structure may be a separate attachment or may be formed by providing a hollowed-out structure in the middle of the positioning plate 12 (e.g., the structure shown in fig. 9).
As shown in fig. 3, in practice, the integral structure formed by the column casing 1 and the guide rod 3 is vertically placed in the center of the blast hole 6, then the first partition plate 2 is installed (of course, the first partition plate can also be set as a fixed structure), then the explosive is charged, the detonating cord 5 and the detonator 9 are installed, then the second partition plate 2 is installed, the detonating cord 5 passes through the through hole or the gap on the partition plate 2, then the explosive is charged, the detonating cord 5 and the detonator 9 are installed, the above processes are repeated until the uppermost partition plate 2 is installed, the filling material is loaded, and the whole explosive charging process is completed.
Claims (9)
1. Deep hole step blasting air spacer, its characterized in that: the device comprises a column casing (1) and a guide rod (3), wherein the guide rod (3) is arranged inside the column casing and fixedly connected with the column casing through a connecting piece at the bottom end, a plurality of partition plates (2) are sleeved on the periphery of the guide rod (3), a guide hole matched with the outer surface of the guide rod (3) is formed in the middle of each partition plate (2), and the partition plates (2), the column casing (1) and the guide rod (3) are arranged along the same central axis; the outer diameter specifications of each layer of the partition plate (2) are different in size, and the outer diameter of the partition plate (2) is increased in the direction from bottom to top; the outer edge of the partition plate (2) is lapped on the inner wall of the column casing (1), the inner wall of the column casing (1) is an inverted conical surface or a multi-layer step surface structure, so that the partition plate (2) is arranged at intervals along the axial direction of the guide rod (3); when the inner wall of the column casing (1) adopts an inverted conical surface structure, the outer side of the partition plate (2) is arranged into a conical surface matched with the inner wall of the column casing (1).
2. The deep hole step blasting air spacer of claim 1, wherein: the outer wall of the guide rod (3) is of a cylindrical structure.
3. The deep hole step blasting air spacer of claim 1, wherein: a gap or a hole for the detonating cord (5) to pass through is formed on the clapboard (2); when the clapboard (2) is provided with a notch for the detonating cord (5) to pass through, the notch is positioned on the hole wall of the guide hole in the middle of the clapboard (2).
4. The deep hole step blasting air spacer of claim 1, wherein: the detonator also comprises a detonating cord (5) and a detonator (9) which are connected with each other; the guide rod (3) is of a hollow structure, and the side wall of the guide rod is provided with a slot which is arranged along the axial direction of the guide rod (3); the detonator (5) is provided with a clamp (10) at a position close to the detonator (9), after the detonator (9) is placed, the detonator (9) is positioned at the outer side of the guide rod (3), the clamp (10) is positioned inside the guide rod (3), and the detonator (5) extends to the outside of the top end of the guide rod (3) along the inner cavity of the guide rod (3).
5. The deep hole step blasting air spacer of claim 4, wherein: the detonating cord (5) is provided with a balancing weight (11) at a position close to the detonator (9), and compared with the clamp (10), the balancing weight (11) is positioned at a position closer to the detonator (9); after the detonator (9) is placed down, the detonator (9) and the balancing weight (11) are both positioned on the outer side of the guide rod (3).
6. The deep hole step blasting air spacer of claim 1, wherein: the partition plates (2) are arranged at regular intervals along the axial direction of the guide rod (3).
7. The deep hole step blasting air spacer of claim 1, wherein: the bottom end of the column casing (1) is fixedly provided with a positioning seat (4), the positioning seat (4) and the column casing (1) are arranged coaxially, and the outer wall of the positioning seat (4) is a cylindrical surface.
8. Deep hole bench blasting air spacer of any one of claims 1 to 7, wherein: the top end of the guide rod (3) is sleeved with a positioning plate (12), the top end of the inner wall of the column casing (1) is provided with a positioning step surface, the outer edge of the positioning plate (12) is overlapped on the positioning step surface, and the outer edge of the positioning plate (12) is attached to the inner wall of the column casing (1) or forms clearance fit.
9. The deep hole step blasting air spacer of claim 8, wherein: the top surface of the positioning plate (12) is provided with a handle structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021286284.2U CN212512760U (en) | 2020-07-03 | 2020-07-03 | Deep hole step blasting air spacer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021286284.2U CN212512760U (en) | 2020-07-03 | 2020-07-03 | Deep hole step blasting air spacer |
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| Publication Number | Publication Date |
|---|---|
| CN212512760U true CN212512760U (en) | 2021-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021286284.2U Active CN212512760U (en) | 2020-07-03 | 2020-07-03 | Deep hole step blasting air spacer |
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| CN (1) | CN212512760U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114894056A (en) * | 2022-05-11 | 2022-08-12 | 中国葛洲坝集团易普力股份有限公司 | Presplitting blasting rapid charging device and charging method |
-
2020
- 2020-07-03 CN CN202021286284.2U patent/CN212512760U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114894056A (en) * | 2022-05-11 | 2022-08-12 | 中国葛洲坝集团易普力股份有限公司 | Presplitting blasting rapid charging device and charging method |
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