CN110514089A - Bench blasting blasthole unwrapping wire positioning device - Google Patents
Bench blasting blasthole unwrapping wire positioning device Download PDFInfo
- Publication number
- CN110514089A CN110514089A CN201910893182.2A CN201910893182A CN110514089A CN 110514089 A CN110514089 A CN 110514089A CN 201910893182 A CN201910893182 A CN 201910893182A CN 110514089 A CN110514089 A CN 110514089A
- Authority
- CN
- China
- Prior art keywords
- crossbar
- stabilizer blade
- unwrapping wire
- positioning device
- wire positioning
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005422 blasting Methods 0.000 title claims abstract description 21
- 239000003381 stabilizer Substances 0.000 claims abstract description 41
- 238000007789 sealing Methods 0.000 claims description 22
- 238000004880 explosion Methods 0.000 abstract description 4
- 239000003973 paint Substances 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 abstract 1
- 239000004744 fabric Substances 0.000 description 5
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/14—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The present invention relates to a kind of bench blasting blasthole unwrapping wire positioning devices, belong to blasting engineering auxiliary device technical field.The present invention includes first crossbar and second crossbar, connection length between first crossbar and second crossbar is adjustable, one end of first crossbar is provided with the first stabilizer blade, and one end of second crossbar is provided with vertical bar and the second stabilizer blade, material-storing box and discharging mechanism are provided between the second stabilizer blade and second crossbar.When implementation, according to the determining spacing of wells of explosion design, first crossbar and second crossbar are adjusted to corresponding position, and is fixed with fastening bolt, the first stabilizer blade is directed at fixed hole location, then vertical bar is slightly firmly pushed, after spring is pressurized, the second stabilizer blade is separated with material-storing box, and the marks object such as red paint of the inside being equipped with leaks out, the hole location is determined, repeating aforesaid operations can determine all hole locations.It is the configuration of the present invention is simple, easy to implement.
Description
Technical field
The present invention relates to a kind of bench blasting blasthole unwrapping wire positioning devices, belong to blasting engineering auxiliary device technical field.
Background technique
When carrying out bench blasting operation, need to design drilling parameter progress cloth hole according to explosion, the precision of cloth hole is to quick-fried
Broken effect can generate large effect.For extensive bench blasting, it is more to often relate to pre- ceasma, cushion hole and main blast hole etc.
The drilling classification of the different spacing of kind.Common theodolite or tape measure carry out blasthole positioning at present, the former is cumbersome, and the latter then can be by
It is limited to hypsography, and operator frequently can squat down and stand up, influences site operation efficiency, generates relatively large deviation.
Summary of the invention
The technical problems to be solved by the present invention are: providing a kind of easy to operate bench blasting blasthole unwrapping wire positioning dress
It sets.
To solve above-mentioned technical problem the technical scheme adopted by the invention is that: bench blasting blasthole unwrapping wire positioning device,
Including first crossbar and second crossbar, first crossbar and second crossbar are horizontally disposed, one end of first crossbar and the second cross
One end of bar is connected, and the structure for adjusting first crossbar and second crossbar connection length is provided in the interconnecting piece of the two,
First crossbar and second crossbar are connected and fixed in the interconnecting piece of the two by fastening bolt；First crossbar is in separate second crossbar
One end is provided with the first stabilizer blade, and the first stabilizer blade is connected to the bottom of first crossbar and in vertically arranged, and second crossbar is far from the
One end of one cross bar is provided with vertical bar and material-storing box, and the upper end of vertical bar is set to the over top of second crossbar as operation handlebar
Hand, material-storing box are fixedly installed on the bottom part down of second crossbar, and the bottom plate of material-storing box is provided with opening, and is equipped in opening
Sealing plate, sealing plate are attached at the inner face of opening, and the inner surface of sealing plate is connected to the top plate of material-storing box by spring, sealing
The outer surface of plate is fixedly connected with the second stabilizer blade；Second stabilizer blade is vertically arranged, and extends to outside the bottom opening of material-storing box；Second
The difference in height that the bottom face position of the bottom face of stabilizer blade and the first stabilizer blade flushes, or both between bottom face with to unwrapping wire
The gradient in face is adapted.
Further, mutually being overlapped between first crossbar and second crossbar；First crossbar is adjusted to connect with second crossbar
The structure of length is that at least one of first crossbar and second crossbar are provided with strip groove, and fastening bolt will after passing through strip groove
The two is connected and fixed.
It is slidably connected further, being formed between first crossbar and second crossbar；Adjust first crossbar and second crossbar
The structure of connection length is that at least one of first crossbar and second crossbar are provided with strip groove, and fastening bolt passes through strip groove
The two is connected and fixed afterwards.
It is slidably connected further, being formed between first crossbar and second crossbar；Adjust first crossbar and second crossbar
The structure of connection length is that first crossbar or second crossbar have sliding slot, and the side wall of sliding slot is provided with threaded hole, fastening bolt
It is threadedly coupled with threaded hole.When using the fixed form, fastening bolt is symmetrical arranged in sliding slot two sides.
Further, the outer surface of first crossbar or the outer surface of second crossbar are provided with graduated scale.
Further, the upper end of vertical bar is fixedly installed handle.
Further, the bonding crack between sealing plate outer surface and material-storing box baseplate inner surface is provided with waterstop sealing
Item.
Further, material-storing box is fixedly connected on the lower end of vertical bar.
Further, the top plate of material-storing box is provided with feed inlet, feed inlet is equipped with feed cap.
The beneficial effects of the present invention are: when implementing, according to the determining spacing of wells of explosion design, first crossbar and the are adjusted
Two cross bars are fixed with fastening bolt to corresponding position, and the first stabilizer blade is directed at fixed hole location, are then slightly firmly pushed perpendicular
Bar, after spring is pressurized, the second stabilizer blade is separated with material-storing box, and the marks object such as red paint of the inside being equipped with leaks out, that is, this has been determined
Hole location, repeating aforesaid operations can determine all hole locations.It is the configuration of the present invention is simple, easy to implement.Blasthole is carried out relative to tape measure
Positioning, since the present invention is positioned by two pieces stabilizer blade, can avoid the hypsography between two blasthole anchor points, and
And the present invention mainly passes through vertical bar and operates, and avoids operator and frequently squats down and stand up, reduces working strength, mention
High construction efficiency.Blasthole positioning is carried out relative to theodolite, then enormously simplifies workflow, construction efficiency can be improved.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is the partial enlargement diagram of material-storing box in the present invention.
Marked in the figure: 1- first crossbar, 2- second crossbar, 3- fastening bolt, the first stabilizer blade of 4-, 5- vertical bar, 6- material-storing box,
7- sealing plate, 8- spring, the second stabilizer blade of 9-, 10- graduated scale, 11- handle, 12- waterstop sealing item, 13- feed cap.
Specific embodiment
For ease of understanding with the implementation present invention, the preferred embodiment of the present invention combination attached drawing is selected to be described further.
As depicted in figs. 1 and 2, the present invention includes first crossbar 1 and second crossbar 2, and first crossbar 1 and second crossbar 2 are equal
Be it is horizontally disposed, one end of first crossbar 1 is connected with one end of second crossbar 2, and the interconnecting piece of the two is provided with tune
The interconnecting piece that the structure of first crossbar 1 and 2 connection length of second crossbar, first crossbar 1 and second crossbar 2 are saved in the two passes through tightly
Fixing bolt 3 is connected and fixed；First crossbar 1 is provided with the first stabilizer blade 4 in one end far from second crossbar 2, and the first stabilizer blade 4 is connected to
The bottom of first crossbar 1 and in vertically arranged, second crossbar 2 is provided with vertical bar 5 and material-storing box in one end far from first crossbar 1
6, the upper end of vertical bar 5 is set to the over top of second crossbar 2 as operating handle, and material-storing box 6 is fixedly installed on second crossbar 2
Bottom part down, the bottom plate of material-storing box 6 is provided with opening, and is equipped with sealing plate 7 in opening, and sealing plate 7 is attached at opening
Inner face, the inner surface of sealing plate 7 is connected to the top plate of material-storing box 6 by spring 8, and the outer surface of sealing plate 7 is fixedly connected
There is the second stabilizer blade 9；Second stabilizer blade 9 is vertically arranged, and extends to outside the bottom opening of material-storing box 6；The bottom face of second stabilizer blade 9 and
The difference in height between bottom face that the bottom face position of first stabilizer blade 4 flushes, or both is mutually fitted with the gradient to unwrapping wire ground
Match.
When implementation, according to the determining spacing of wells of explosion design, first crossbar 1 and second crossbar 2 are adjusted to corresponding position,
And it is fixed with fastening bolt 3, the first stabilizer blade 4 is directed at fixed hole location, then slightly firmly pushes vertical bar 5, and spring 8 is pressurized
Afterwards, the second stabilizer blade 9 is separated with material-storing box 6, and the marks object such as red paint of the inside being equipped with leaks out, that is, the hole location has been determined, is repeated
Aforesaid operations can determine all hole locations.5 height of vertical bar uses matched with general adult；Spring 8 is always in compression shape
State, and the compression reseting elasticity of its original state is to require to be designed to meet maintenance sealing plate 7 to be in normally off.
Difference in height in the present invention between the bottom face of the second stabilizer blade 9 and the bottom face of the first stabilizer blade 4 with to unwrapping wire ground
The gradient be adapted, refer to the line of both the bottom tip of the second stabilizer blade 9 and the bottom tip of the first stabilizer blade 4 relative to water
The inclination angle that plane is formed, it is consistent with the inclination angle of slope surface.The embodiment is particularly suitable for almost the same oblique of terrain slope
Slope surface.The bottom face position of the versatility of consideration device, the bottom face of the second stabilizer blade 9 and the first stabilizer blade 4 generally flushes setting.
General bench blasting, terrain slope basic horizontal generally will not be too big even if there is the gradient, do not exceed 10 °.Assuming that design
Pitch-row is 2.0m, in such a way that the bottom face of the second stabilizer blade 9 and the bottom face position of the first stabilizer blade 4 flush setting, second
The spacing of foot 9 and the first stabilizer blade 4 is equally taken as 2.0m, if terrain slope is 10 °, practical cloth hole horizontal space is 1.97m；If
Terrain slope is 5 °, then practical cloth hole horizontal space is 1.992m；Cloth hole precision fully meets technical requirements.
For the connection structure of first crossbar 1 and second crossbar 2, under type such as usually can be used and realize:
It can be using mutually overlapped mode, at this point, adjusting first crossbar 1 and the between first crossbar 1 and second crossbar 2
The structure of two cross bars, 2 connection length is that at least one of first crossbar 1 and second crossbar 2 are provided with strip groove, fastening bolt 3
The two is connected and fixed after strip groove.When only one is provided with strip groove in first crossbar 1 and second crossbar 2, separately
The two is then connected and fixed after fastening bolt 3 sequentially passes through strip groove, bolt hole in corresponding position setting bolt hole by one.This
Outside, when only one is provided with strip groove in first crossbar 1 and second crossbar 2, another one can also directly with the end of threaded rod
Portion is connected to a fixed, and after the other end of threaded rod passes through strip groove, is connected and fixed the two by nut.When 1 He of first crossbar
When both second crossbars 2 are provided with strip groove, after fastening bolt 3 sequentially passes through two strip grooves, the two is connected and fixed.
The mode being slidably connected can also be used between first crossbar 1 and second crossbar 2, at this point, adjusting first crossbar 1 and the
Aforesaid way realization, i.e. at least one of first crossbar 1 and second crossbar 2 equally can be used in the structure of two cross bars, 2 connection length
It is provided with strip groove, the two is connected and fixed by fastening bolt 3 after passing through strip groove.In addition, working as first crossbar 1 and second crossbar 2
Between formed when being slidably connected, the structure for adjusting first crossbar 1 and 2 connection length of second crossbar can also be arranged as follows, first
Cross bar 1 or second crossbar 2 have sliding slot, and the side wall of sliding slot is provided with threaded hole, and fastening bolt 3 is threadedly coupled with threaded hole.
When using the fixed form, fastening bolt 3 is symmetrical arranged in sliding slot two sides.The fixed form is abutted by the tail end of fastening bolt 3
Coupling mechanism force is provided.Being slidably connected between first crossbar 1 and second crossbar 2 is preferably accomplished in that 1 He of first crossbar
Second crossbar 2 is all made of tubular element, and first crossbar 1 is set in the outer wall or inner wall of second crossbar 2, in the present embodiment
First crossbar 1 is set in the outer wall of second crossbar 2.As example, when being connected and fixed, can be arranged in the side wall of first crossbar 1
Threaded hole, fastening bolt 3 are threadedly coupled with threaded hole, and the tail end of fastening bolt 3 abuts locking second crossbar 2.It can also be first
The side wall of cross bar 1 opens up strip groove, and second crossbar 2 opens up bolt hole, will after fastening bolt 3 sequentially passes through strip groove, bolt hole
The two is connected and fixed；Similarly, bolt hole can also be opened up in the outer wall of first crossbar 1, second crossbar 2 opens up strip groove, fastens spiral shell
After bolt 3 sequentially passes through strip groove, bolt hole, the two is connected and fixed.In addition, bar shaped can also be opened up in the side wall of first crossbar 1
Threaded rod is fixedly installed on 2 outer wall of second crossbar and is connected the two by nut after the other end of threaded rod passes through strip groove for slot
Connect fixation.
The connection length of first crossbar 1 and second crossbar 2 can measure control by individual scale, can also be direct
The outer surface of first crossbar 1 or the outer surface of second crossbar 2 are provided with graduated scale 10.In second crossbar 2 in the present embodiment
Outer surface be provided with graduated scale 10.Graduated scale 10 can be arranged in the following way: when second crossbar 2 is moved to the left to the limit
When, the spacing of two stabilizer blades is minimum at this time, can be using the minimum spacing as basic size, then by the right end of first crossbar 1
Graduated scale is successively designed as starting point in face.Such as the minimum spacing is 1.0m, when second crossbar 2 moves right 0.2m, then
The spacing of adjustable two stabilizer blades is 1.2m.
For convenience of operation, the upper end of vertical bar 5 is fixedly installed handle 11.
To guarantee sealing performance, material leakage, the bonding crack between 6 baseplate inner surface of 7 outer surface of sealing plate and material-storing box are prevented
It is provided with waterstop sealing item 12.
Material-storing box 6 is fixedly connected on vertical bar 5 or in second crossbar 2, for convenience of processing and fabricating, while facilitating behaviour
Make, material-storing box 6 is fixedly connected on the lower end of vertical bar 5 by the present invention.In addition, for convenience of feed, the top plate of material-storing box 6 be provided with into
Material mouth, feed inlet are equipped with feed cap 13, and feed cap 13 is using buckle-type fixed structure or is threadedly coupled fixed structure.
Claims (10)
1. bench blasting blasthole unwrapping wire positioning device, it is characterised in that: horizontal including first crossbar (1) and second crossbar (2), first
Bar (1) and second crossbar (2) be it is horizontally disposed, one end of first crossbar (1) is connected with one end of second crossbar (2), and
And the structure for adjusting first crossbar (1) and second crossbar (2) connection length, first crossbar (1) are provided in the interconnecting piece of the two
Interconnecting piece with second crossbar (2) in the two is connected and fixed by fastening bolt (3)；First crossbar (1) is far from second crossbar
(2) one end is provided with the first stabilizer blade (4), and the first stabilizer blade (4) is connected to the bottom of first crossbar (1) and in vertically arranged, the
Two cross bars (2) are provided with vertical bar (5) and material-storing box (6) in one end far from first crossbar (1), and the upper end of vertical bar (5) is set to
For the over top of second crossbar (2) as operating handle, material-storing box (6) is fixedly installed on the bottom part down of second crossbar (2), storage
The bottom plate of magazine (6) is provided with opening, and is equipped with sealing plate (7) in opening, and sealing plate (7) is attached at the inner end of opening
Face, the inner surface of sealing plate (7) are connected to the top plate of material-storing box (6) by spring (8), and the outer surface of sealing plate (7) is fixed to be connected
It is connected to the second stabilizer blade (9)；Second stabilizer blade (9) is vertically arranged, and extends to outside the bottom openings of material-storing box (6)；Second stabilizer blade (9)
Bottom face and the first stabilizer blade (4) the bottom face that flushes, or both of bottom face position between difference in height with to unwrapping wire
The gradient in face is adapted.
2. bench blasting blasthole unwrapping wire positioning device as described in claim 1, it is characterised in that: first crossbar (1) and second
Cross bar mutually overlaps between (2)；The structure for adjusting first crossbar (1) and second crossbar (2) connection length is first crossbar (1)
At least one of second crossbar (2) is provided with strip groove, the two is connected and fixed by fastening bolt (3) after passing through strip groove.
3. bench blasting blasthole unwrapping wire positioning device as described in claim 1, it is characterised in that: first crossbar (1) and second
It is formed and is slidably connected between cross bar (2)；The structure for adjusting first crossbar (1) and second crossbar (2) connection length is first crossbar
(1) and at least one of second crossbar (2) is provided with strip groove, and the two is connected and fixed by fastening bolt (3) after passing through strip groove.
4. bench blasting blasthole unwrapping wire positioning device as described in claim 1, it is characterised in that: first crossbar (1) and second
It is formed and is slidably connected between cross bar (2)；The structure for adjusting first crossbar (1) and second crossbar (2) connection length is first crossbar
(1) or second crossbar (2) has sliding slot, and the side wall of sliding slot is provided with threaded hole, and fastening bolt (3) and threaded hole screw thread connect
It connects.
5. bench blasting blasthole unwrapping wire positioning device as claimed in claim 4, it is characterised in that: fastening bolt (3) is in sliding slot
Two sides are symmetrical arranged.
6. the bench blasting blasthole unwrapping wire positioning device as described in any one of claim 1 to 5, it is characterised in that: first
The outer surface of cross bar (1) or the outer surface of second crossbar (2) are provided with graduated scale (10).
7. the bench blasting blasthole unwrapping wire positioning device as described in any one of claim 1 to 5, it is characterised in that: vertical bar
(5) upper end is fixedly installed handle (11).
8. the bench blasting blasthole unwrapping wire positioning device as described in any one of claim 1 to 5, it is characterised in that: sealing
Bonding crack between plate (7) outer surface and material-storing box (6) baseplate inner surface is provided with waterstop sealing item (12).
9. the bench blasting blasthole unwrapping wire positioning device as described in any one of claim 1 to 5, it is characterised in that: storing
Box (6) is fixedly connected on the lower end of vertical bar (5).
10. the bench blasting blasthole unwrapping wire positioning device as described in any one of claim 1 to 5, it is characterised in that: storing
The top plate of box (6) is provided with feed inlet, and feed inlet is equipped with feed cap (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910893182.2A CN110514089A (en) | 2019-09-20 | 2019-09-20 | Bench blasting blasthole unwrapping wire positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910893182.2A CN110514089A (en) | 2019-09-20 | 2019-09-20 | Bench blasting blasthole unwrapping wire positioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110514089A true CN110514089A (en) | 2019-11-29 |
Family
ID=68631636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910893182.2A Pending CN110514089A (en) | 2019-09-20 | 2019-09-20 | Bench blasting blasthole unwrapping wire positioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110514089A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111623677A (en) * | 2020-05-27 | 2020-09-04 | 山东省淮海工程建设监理有限公司 | Pilot hole smooth blasting construction method and blast hole positioning device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6293028B1 (en) * | 1998-12-07 | 2001-09-25 | Lance Sylvia | Construction tool and method of use |
| CN204007365U (en) * | 2014-07-21 | 2014-12-10 | 马鞍山矿山研究院爆破工程有限责任公司 | A kind of cloth hole instrument that can accurately arrange surface blasting big gun hole site |
| CN205002707U (en) * | 2015-09-25 | 2016-01-27 | 一汽通用红塔云南汽车制造有限公司 | Utensil is tested in special use of rear axle leaf spring bracket aperture centre -to -centre spacing |
| CN205403622U (en) * | 2016-03-10 | 2016-07-27 | 贵州新联爆破工程集团有限公司 | A cloth hole position mark brush mechanism for demolition blasting |
| CN206235329U (en) * | 2016-10-31 | 2017-06-09 | 中冶天工集团有限公司 | Device for drilling, positioning and paying-off in blasting operation |
| CN108326352A (en) * | 2018-01-10 | 2018-07-27 | 伍振铭 | Marking arrangement is blocked in a kind of production transmission positioning of hardware copper sheet |
| CN210268430U (en) * | 2019-09-20 | 2020-04-07 | 中国电建集团成都勘测设计研究院有限公司 | Step blasting big gun hole unwrapping wire positioner |
-
2019
- 2019-09-20 CN CN201910893182.2A patent/CN110514089A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6293028B1 (en) * | 1998-12-07 | 2001-09-25 | Lance Sylvia | Construction tool and method of use |
| CN204007365U (en) * | 2014-07-21 | 2014-12-10 | 马鞍山矿山研究院爆破工程有限责任公司 | A kind of cloth hole instrument that can accurately arrange surface blasting big gun hole site |
| CN205002707U (en) * | 2015-09-25 | 2016-01-27 | 一汽通用红塔云南汽车制造有限公司 | Utensil is tested in special use of rear axle leaf spring bracket aperture centre -to -centre spacing |
| CN205403622U (en) * | 2016-03-10 | 2016-07-27 | 贵州新联爆破工程集团有限公司 | A cloth hole position mark brush mechanism for demolition blasting |
| CN206235329U (en) * | 2016-10-31 | 2017-06-09 | 中冶天工集团有限公司 | Device for drilling, positioning and paying-off in blasting operation |
| CN108326352A (en) * | 2018-01-10 | 2018-07-27 | 伍振铭 | Marking arrangement is blocked in a kind of production transmission positioning of hardware copper sheet |
| CN210268430U (en) * | 2019-09-20 | 2020-04-07 | 中国电建集团成都勘测设计研究院有限公司 | Step blasting big gun hole unwrapping wire positioner |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111623677A (en) * | 2020-05-27 | 2020-09-04 | 山东省淮海工程建设监理有限公司 | Pilot hole smooth blasting construction method and blast hole positioning device |
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