CN203687800U - High-strength blast retaining device - Google Patents
High-strength blast retaining device Download PDFInfo
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- CN203687800U CN203687800U CN201320704471.1U CN201320704471U CN203687800U CN 203687800 U CN203687800 U CN 203687800U CN 201320704471 U CN201320704471 U CN 201320704471U CN 203687800 U CN203687800 U CN 203687800U
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- push rod
- hole
- explosion
- rod
- backstopping device
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Abstract
The utility model discloses a high-strength blast retaining device. The high-strength blast retaining device comprises a discharging end body and a mandril, wherein the discharging end body comprises a mandril through hole communicated with a discharging hole; the middle of the mandril is provided with a tension spring which is arranged in the mandril through hole and is positioned at the communicated position of the discharging hole and the mandril through hole; when the discharging hole is used for discharging, two ends of the mandril extend out of two ends of the mandril through hole. Therefore the problem that a carbon dioxide mining device flies off a coal borehole in the blasting process is solved, and the integral safety and reliability of carbon dioxide mining are improved.
Description
Technical field
The utility model relates to ore exploration and exploitation field, particularly high strength explosion backstopping device.
Background technology
Colliery, in exploitation, generally adopts the recovery method of underground blasting.Due to, traditional explosive produces a large amount of high temperature and flame in blasting process, therefore, has brought potential safety hazard to coal mining, while especially carrying out detonation in high gas and projecting mine, coal dust very likely with gas explosion.In recent years, in order to improve the security of coal mining, carbon dioxide exploitation is arisen at the historic moment.Carbon dioxide exploitation is taking carbon dioxide as explosive source, and carbon dioxide exploitation device is the gas-field exploitation mode that main enforcement device carries out.Wherein, carbon dioxide exploitation device comprise high strength fill liquid carbon dioxide metal tube, heater, level pressure let out can device etc. part.Carrying out in recovery process, the one end of carbon dioxide being exploited to device is positioned in coal body boring, activate heater by exploder, heat inner liquid carbon dioxide and become gas, make 600 times of volume expansions, pressure reach the carbon dioxide abrupt release of hundred MPas, thereby reach the requirement of coal blasting.But in the instantaneous explosion process of carbon dioxide, stretch into the carbon dioxide exploitation device in coal body boring, can, under the effect of instantaneous explosion power, in holing, fly out at a terrific speed, significantly increase the danger of explosion, thereby affected and hindered the application of carbon dioxide exploitation.
Utility model content
For defect of the prior art, the utility model provides high strength explosion backstopping device, moment by push rod in blasting process outwards forms and supports, form fixed support with coal body drill hole inner wall, thereby make the carbon dioxide exploitation device being attached thereto, can be fixed in coal body boring in instant of detonation.Thereby solve in above-mentioned prior art the problem that carbon dioxide exploitation device flies out in blasting process from coal body boring.
High strength explosion backstopping device is provided in the utility model one embodiment, wherein, has comprised: discharge end body and push rod; Described discharge end body comprises the push-rod hole communicating with discharge orifice, and the middle part of described push rod is extension spring, is arranged in described push-rod hole, makes described extension spring be positioned at the place that communicates of discharge orifice and push-rod hole; In the time of described discharge orifice discharge, stretch out from the two ends of described push-rod hole at the two ends of described push rod.
In some embodiments, one end of described push rod comprises: spacing ring; On the relevant position of described push-rod hole, comprise stopper slot, the degree of depth of described stopper slot is corresponding with described spacing ring width, and the length of described stopper slot is corresponding with the extension elongation at described two ends.
In some embodiments, the two ends of described push rod comprise: spacing ring; On the relevant position of described push-rod hole, comprise stopper slot, the degree of depth of described stopper slot is corresponding with described spacing ring width, and the length of described stopper slot is corresponding with the extension elongation at described two ends, and making described extension spring is incipient extension length.
In some embodiments, one end of described push rod is taper; Described push-rod hole is corresponding with described taper.
In some embodiments, the two ends of described push rod are taper; Described push-rod hole is corresponding with described taper, and making described extension spring is incipient extension length.
In some embodiments, the end face of the link of described push rod and extension spring is inner cavity.
In some embodiments, the end face of the link of described push rod and extension spring comprises: injecting hole.
In some embodiments, the end face of the external part of described push rod comprises: damping material hole, fixing damping mat in described damping material hole.
In some embodiments, the external part of described push rod is top cover.
In some embodiments, also comprise: the circle of holding one's breath, the link of described push rod and extension spring comprises: the ring recess of holding one's breath, described in hold one's breath ring recess with described in the circle of holding one's breath corresponding, described in the circle ring recess inside of holding one's breath described in being assemblied in of holding one's breath.
Compared with prior art, according to the utlity model has following advantage: the explosion backstopping device in the utility model, by carbon dioxide explosion moment, can eject push rod from both sides, be fixed in exploitation hole carbon dioxide exploitation device moment.And can bear larger support strength.Therefore efficiently solve, carbon dioxide exploitation device is implementing in carbon blasting process, the problem flying out in adopting hole.Thereby security and the reliability of carbon dioxide exploitation are improved.
Brief description of the drawings
Structural representation when Fig. 1 is original state in one embodiment of high strength explosion backstopping device of the present utility model;
Fig. 1 a is the perspective internal view of high strength explosion backstopping device in Fig. 1;
Structural representation when Fig. 2 is duty in one embodiment of high strength explosion backstopping device of the present utility model;
Fig. 2 a is the perspective internal view of high strength explosion backstopping device in Fig. 2;
Structural representation when Fig. 3 is the original state that in a kind of embodiment of high strength explosion backstopping device of the present utility model, push rod is taper;
Fig. 4 is the partial structurtes schematic diagram that in a kind of embodiment of high strength explosion backstopping device of the present utility model, push rod bottom is inner cavity;
Fig. 5 is the partial structurtes schematic diagram that in the another kind of embodiment of high strength explosion backstopping device of the present utility model, push rod bottom is inner cavity;
Fig. 6 is the partial structurtes schematic diagram that in a kind of embodiment of high strength explosion backstopping device of the present utility model, push rod bottom is injecting hole;
Fig. 7 be in a kind of embodiment of high strength explosion backstopping device of the present utility model push rod bottom for injecting hole and the partial structurtes schematic diagram of inner cavity;
Fig. 8 be in a kind of embodiment of high strength explosion backstopping device of the present utility model push rod with the partial structurtes schematic diagram of damping hole;
Fig. 9 be in a kind of embodiment of high strength explosion backstopping device of the present utility model push rod bottom with the partial structurtes schematic diagram of the circle of holding one's breath.
Detailed description of the invention
Below in conjunction with accompanying drawing, shown in Fig. 1～Fig. 8, utility model is described in further detail.
Fig. 1～Fig. 1 a is high strength explosion backstopping device of the present utility model structural representation in one embodiment.The link 11 of discharge end body 10 is provided with and can exploits external screw thread or the internal thread (internal thread type is not shown) that device is connected with carbon dioxide.End at link 11 comprises: discharge orifice 12.After discharge end body 10 is connected with carbon dioxide exploitation device, this discharge orifice 12 is communicated with the discharge chamber in carbon dioxide exploitation device, and this discharge orifice 12 is also communicated with venting of dust explosion hole 13 and push-rod hole 14.Push-rod hole 14 is along the radially setting of discharge end body 10.Push rod 20 comprises: upper end push rod 21, lower end push rod 22 and Double-hook tension-spring 23, the bottom of upper end push rod 21 is connected with rising to the bait of Double-hook tension-spring 23, the top of lower end push rod 22 is connected with the lower hook of Double-hook tension-spring 23, the aperture of the entire outer diameter of push rod 20 and push-rod hole 14 is corresponding, push rod 20 is assemblied in push-rod hole 14, and can in push-rod hole 14, slides.In the assembling of push rod 20, make Double-hook tension-spring 23 be positioned at the place that communicates of discharge orifice 12 and push-rod hole 14, thereby ensure in the time not producing discharge, push rod 20 stays in push-rod hole 14, in the time that discharge orifice 12 produces discharge, push rod 20, under the promotion of discharge orifice 12, stretches out from the two ends of push-rod hole 14.Above-mentioned Double-hook tension-spring 23 also can adopt other form of springs to substitute, and its spring can be realized by modes such as welding with being connected also of upper end push rod 21 and lower end push rod 22.
The course of work of the utility model high strength explosion backstopping device is.The link 11 of high strength explosion backstopping device is connected with the collection terminal of carbon dioxide exploitation device, afterwards the one end that is connected with high strength explosion backstopping device is stretched into in blast hole, (high strength explosion backstopping device is in the time of original state, entire outer diameter is less than blast hole internal diameter), state is as shown in Figure 1.After the carbon dioxide in carbon dioxide exploitation device is detonated, " the carbon dioxide explosion gas " entering in discharge orifice 12, in passing through venting of dust explosion hole 13 ventings of dust explosion, enter push-rod hole 14, it is the residing position of Double-hook tension-spring 23, promote upper end push rod 21 and lower end push rod 22 moves to the two ends of push-rod hole 14 from initial position simultaneously, respectively from push-rod hole 14 upper port 14a, and stretch out in lower port 14b.Thereby make upper end push rod 21 and lower end push rod 22 form effective support with blast hole inwall, make carbon dioxide exploitation device in the moment of blast, be fixed in blast hole, state is as shown in Fig. 2 and Fig. 2 b.Thereby effectively avoid in blast process the phenomenon that carbon dioxide exploitation device flies out from explosive hole.
As shown in Fig. 1～2, Fig. 1 a～2a.For push rod 20 can, before explosion, be difficult for slippage from push-rod hole 14, and can bear larger support strength.And the fixed position of the push-rod hole 14 of being more convenient for Double-hook tension-spring 23 to be fixed on.Therefore, in a kind of embodiment of the present utility model, on cylindrical on upper end push rod 21 or lower end push rod 22, also comprise: spacing ring 24, this spacing ring 24 and upper end push rod 21 or lower end push rod 22, can be and process respectively laggard luggage and join, also can be one-body molded in the time of turning upper end push rod 21 or lower end push rod 22.And on the relevant position of push-rod hole 14, offer stopper slot 15, and the width of the degree of depth of stopper slot 15 and spacing ring 24 is corresponding, and the extension elongation of the length of stopper slot 15 and upper end push rod 21 or lower end push rod 22 is corresponding.Thereby push rod 20 is fixed in push-rod hole 14.Simultaneously, for making the position (being positioned at the place that communicates of discharge orifice 12 and push-rod hole 14) of Double-hook tension-spring 23 more accurate, also can on the cylindrical on upper end push rod 21 and lower end push rod 22, fix: spacing ring 24 simultaneously, this spacing ring 24 and upper end push rod 21 and lower end push rod 22, can be and process respectively laggard luggage and join, also can be integrated machine-shaping.Thereby after upper end push rod 21 and lower end push rod 22 are assembled in stopper slot 15, the tensile elongation that makes Double-hook tension-spring 23 is incipient extension length simultaneously, and the place that communicates with push-rod hole 14 in discharge orifice 12 that can " accurately ".For making push rod 20 before explosion, be difficult for slippage from push-rod hole 14, can also take other structures.Therefore, in another kind of embodiment of the present utility model, as shown in Figure 3, upper end push rod 21 or lower end push rod 22 can also be taper, and push-rod hole 14 is corresponding with the shape of taper hole simultaneously.Simultaneously, upper end push rod 21 and lower end push rod 22 can be also taper hole simultaneously, thereby when push rod 20 is fixed on push-rod hole 14, can also accurately fix Double-hook tension-spring 23 position (make Double-hook tension-spring 23 for incipient extension length, and " accurately " in discharge orifice 12 place that communicates with push-rod hole 14).Because, said structure so that Double-hook tension-spring 23 in extended state, therefore in the time that " carbon dioxide explosion gas " enters push-rod hole 14, upper end push rod 21 can be promoted in time and lower end push rod 22 moves to two ends, thereby shorten the ejection reaction time of high strength explosion backstopping device, sensitivity is improved.Meanwhile, also can, by the external part of upper end push rod 21 and lower end push rod 22, be designed to end cover structure, thereby further make the position location of Double-hook tension-spring 23 more accurate.
As shown in Figure 4, due to upper end push rod 21 and lower end push rod 22, sliding speed in push-rod hole 14 is very fast, therefore, upper end push rod 21 and lower end push rod 22 and push-rod hole 14 keep good quality of fit (concentricity), but in the time of reality processing and use, find that the guarantee of above-mentioned quality of fit can be subject to the impact of many factors, be difficult for ensureing degree of precision, for making " action " of high strength explosion backstopping device of the present utility model more flexible, accurate.Therefore, in another kind of embodiment of the present utility model, Double-hook tension-spring 23 also can adopt radially to be fixed extension spring 23 and realizes,, the upper end of Double-hook tension-spring 23 is fixedly connected with the lower end cylindrical of upper end push rod 21, and the lower end of Double-hook tension-spring 23 is fixedly connected with the cylindrical of the upper end of lower end push rod 22.And at the end face of the lower end of upper end push rod 21, or the end face of the upper end of lower end push rod 22 link of Double-hook tension-spring 23 (with) is offered inner cavity 25(and is illustrated as the diagram of upper end push rod 21), as shown in Figure 5.Above-mentioned inner cavity 25 structures also applicable, in the structure that the end shape of upper end push rod 21 and/or lower end push rod 22 is taper.Therefore, make to explode carbon dioxide in inner cavity 25, while promotion, blast motive force will act on the top of upper end push rod 21 bottoms and lower end push rod 22 from multiple directions, and in the time of the top of upper end push rod 21 bottoms and lower end push rod 22, blast motive force is the top that vertically acts on upper end push rod 21 bottoms and lower end push rod 22, therefore, at upper end push rod 21, when quality of fit that lower end push rod 22 and push-rod hole 14 do not need to keep good, just can accurately promote push rod 20 moves in push-rod hole 14, therefore, make " action " of high strength explosion backstopping device of the present utility model more flexible, accurately.As the further optimization of said structure, as shown in Figure 6, also can offer one or more being uniformly distributed (concentric arry distributes or uniform array distributes) injecting hole 26 at the end face of the upper end of the end face of the lower end of upper end push rod 21 or lower end push rod 22.As shown in Figure 7, injecting hole 26 also can be opened in the inner side of inner cavity 25.At explosion gas push upper end push rod 21 or lower end push rod 22, when motion, explosion gas is introduced in inner cavity 25 and obtains " gathering ", and then enters injecting hole 26.With above-mentioned offer and therefore make explosion gas more uniformly " blast propulsive force " be put on the end face of upper end push rod 21 or lower end push rod 22, thereby make explosion backstopping device can keep " sensitive ", " accurately " reaction.
As shown in Figure 8.For making the utility model high strength explosion backstopping device, can be adapted to more coarse explosive hole surface, be not easy to landing from explosive hole.Therefore in a kind of embodiment of the present utility model, on the end face of the external part of upper end push rod 21 and/or lower end push rod 22, also comprise: damping material hole 27, damping material hole 27, and assemble damping mat 30 in this damping material hole 27.Therefore, when upper end push rod 21 and lower end push rod 22 are under explosion gas push, when ejection, thereby damping mat 30 will keep contacting more and being conducive to more closely with explosive hole, and the utility model is implemented to use in the explosive hole of multiple types ore bed.
As shown in Figure 9, for making explosion backstopping device reaction of the present utility model more sensitive.Therefore, in a kind of embodiment of the present utility model, can pass through at the bottom of upper end push rod 21 (with the link of Double-hook tension-spring 23) sidewall, and/or in the top of lower end push rod 22 (with the link of Double-hook tension-spring 23) sidewall increase circle 40 the mode of holding one's breath, strengthen the reaction sensitivity of high strength explosion backstopping device, the bottom of upper ejector pin 21 and/or comprise on the top of lower end push rod 22: the ring recess 28 of holding one's breath, circle 40 grooves of holding one's breath are corresponding with the size of the circle 28 of holding one's breath, the circle 40 that makes to hold one's breath is assemblied in holds one's breath in ring recess 28, forms gas-tight sealing with the sidewall of push-rod hole 14 simultaneously.Therefore, make the gas-tight property between upper ejector pin 21 and lower end push rod 22 and push rod 20 and push-rod hole 14 better, in the time that blast carbon dioxide promotes upper end push rod 21 and lower end push rod 22, explosion gas is difficult for from the gap location " leakage " between upper end push rod 21 and/or lower end push rod 22 and rod through-hole 14, therefore ensured that upper ejector pin 21 and lower end push rod 22 can obtain higher motive force, improved the reaction sensitivity of high strength explosion backstopping device.
Above-described is only embodiments more of the present utility model.For the person of ordinary skill of the art, not departing under the prerequisite of the utility model creation design, can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (10)
1. high strength explosion backstopping device, is characterized in that, comprising: discharge end body and push rod; Described discharge end body comprises the push-rod hole communicating with discharge orifice, and the middle part of described push rod is extension spring, is arranged in described push-rod hole, makes described extension spring be positioned at the place that communicates of discharge orifice and push-rod hole; In the time of described discharge orifice discharge, stretch out from the two ends of described push-rod hole at the two ends of described push rod.
2. explosion backstopping device according to claim 1, is characterized in that, one end of described push rod comprises: spacing ring; On the relevant position of described push-rod hole, comprise stopper slot, the degree of depth of described stopper slot is corresponding with described spacing ring width, and the length of described stopper slot is corresponding with the extension elongation at described two ends.
3. explosion backstopping device according to claim 1, is characterized in that, the two ends of described push rod comprise: spacing ring; On the relevant position of described push-rod hole, comprise stopper slot, the degree of depth of described stopper slot is corresponding with described spacing ring width, and the length of described stopper slot is corresponding with the extension elongation at described two ends, and making described extension spring is incipient extension length.
4. explosion backstopping device according to claim 1, is characterized in that, one end of described push rod is taper; Described push-rod hole is corresponding with described taper.
5. explosion backstopping device according to claim 1, is characterized in that, the two ends of described push rod are taper; Described push-rod hole is corresponding with described taper, and making described extension spring is incipient extension length.
6. explosion backstopping device according to claim 1, is characterized in that, the end face of the link of described push rod and extension spring is inner cavity.
7. according to the explosion backstopping device described in claim 1 or 6, it is characterized in that, the end face of the link of described push rod and extension spring comprises: injecting hole.
8. explosion backstopping device according to claim 7, is characterized in that, the end face of the external part of described push rod comprises: damping material hole, fixing damping mat in described damping material hole.
9. explosion backstopping device according to claim 7, is characterized in that, the external part of described push rod is top cover.
10. explosion backstopping device according to claim 1, is characterized in that, also comprises: the circle of holding one's breath, the link of described push rod and extension spring comprises: the ring recess of holding one's breath, described in hold one's breath ring recess with described in the circle of holding one's breath corresponding, described in the circle ring recess inside of holding one's breath described in being assemblied in of holding one's breath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320704471.1U CN203687800U (en) | 2013-11-08 | 2013-11-08 | High-strength blast retaining device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320704471.1U CN203687800U (en) | 2013-11-08 | 2013-11-08 | High-strength blast retaining device |
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| Publication Number | Publication Date |
|---|---|
| CN203687800U true CN203687800U (en) | 2014-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320704471.1U Withdrawn - After Issue CN203687800U (en) | 2013-11-08 | 2013-11-08 | High-strength blast retaining device |
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| Country | Link |
|---|---|
| CN (1) | CN203687800U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104634202A (en) * | 2013-11-08 | 2015-05-20 | 北京天高智机技术开发公司 | High-strength blasting retaining device |
-
2013
- 2013-11-08 CN CN201320704471.1U patent/CN203687800U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104634202A (en) * | 2013-11-08 | 2015-05-20 | 北京天高智机技术开发公司 | High-strength blasting retaining device |
| CN104634202B (en) * | 2013-11-08 | 2016-08-31 | 北京天高智机技术开发公司 | High intensity explosion backstopping device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140702 Effective date of abandoning: 20160831 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |