A decoupled charge positioning device and blasthole

Abstract

The present application relates to a kind of uncoupling charge positioning device and blasthole comprising the uncoupling charge positioning device, wherein the uncoupling charge positioning device includes: sleeve, the sleeve includes the engagement unit being arranged on it;And a plurality of supports movably connected with the sleeve by the engagement unit, a plurality of the support is arranged along the circumference of the sleeve.The uncoupling charge positioning device and blasthole comprising the uncoupling charge positioning device of the present application can flexibly adjust the position of uncoupling charge cartridge, so as to be able to fully destroy the rock mass of being exploded side, reduce the damage of the rock mass needing to be protected side, ensure the stability of surrounding rock and the flatness of excavation profile, improve explosive energy utilization rate, simple operation, high work efficiency, good safety, save economic cost.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of blasting equipment, and particularly relates to a decoupled charging positioning device and a blast hole comprising the same. BACKGROUND

[0002] Due to the main advantages of low cost and high efficiency, blasting has become one of the common means for the development of mineral resources. In smooth blasting construction, a decoupled charging structure is usually used. Because there is a gap between the cartridge and the blast hole in the decoupled charging structure, the cartridge is generally in contact with the lower hole wall under the action of gravity, thus forming an eccentric decoupled charging structure. This eccentric charging structure causes the energy released by the explosion of the explosive to be mainly concentrated at the lower edge of the blast hole, thereby causing the contour formed after the blasting of each peripheral hole to be extremely irregular, the side breaking effect of the blasting to be poor, the damage to the retained side to be high, and the like, which reduces the utilization rate of the explosion energy and greatly affects the blasting effect. The rock breaking area near the charging side of the eccentric decoupled charging is more obvious, and thus if the position of the cartridge of the decoupled charging can be reasonably adjusted, the blasting effect of the decoupled charging can be optimized, and the economic loss can be obviously reduced.

[0003] Therefore, the prior art still needs to be improved. SUMMARY

[0004] In view of the deficiencies of the prior art, the purpose of the present application is to adjust the position of the cartridge of the decoupled charging by using a decoupled charging positioning device in the smooth blasting of the slope, to effectively improve the pre-splitting blasting effect, to reduce the cost of slope support and maintenance, and to reduce the economic loss of the blasting of the slope.

[0005] Specifically, according to an aspect of the present application, a decoupled charging positioning device is provided, which comprises: a sleeve comprising an engaging unit provided thereon; and a plurality of supports movably connected with the sleeve through the engaging unit, the plurality of supports being arranged along the circumference of the sleeve.

[0006] In an embodiment of the present application, the engaging unit is integrally formed with the sleeve, and the materials of the sleeve and the supports are both PVC.

[0007] In an embodiment of the present application, the sleeve comprises an inner wall, an outer wall, and a space provided between the inner wall and the outer wall, and the engaging unit comprises an annular toothed groove arranged on the inner wall along the circumference of the sleeve and an annular cutout defined along the circumference of the sleeve and limited by the outer wall, the annular toothed groove being arranged opposite to the annular cutout.

[0008] In an embodiment of the present application, the width of the annular toothed groove along the axial direction of the sleeve is greater than the width of the annular cutout along the axial direction of the sleeve.

[0009] In the embodiment of the present application, the engaging unit further comprises an opening arranged on the annular occlusal groove, and the bracket enters the space through the opening and engages with the annular occlusal groove.

[0010] In the embodiment of the present application, the bracket comprises a first end, the width of the first end is greater than the width of the annular incision and less than the width of the annular occlusal groove, and the first end is arranged with occlusal teeth, and the first end enters the space through the opening and can move in the space and engage with the annular occlusal groove through the occlusal teeth.

[0011] In the embodiment of the present application, the number of the openings is multiple, and the multiple openings are arranged at a predetermined angle on the circumference of the sleeve, and one opening corresponds to one bracket.

[0012] In the embodiment of the present application, the bracket further comprises a middle part connected with the first end and a second end connected with the middle part, the width of the middle part is slightly less than the width of the annular incision, and the middle part is a spiral ejection structure, and the second end is arranged with an end cap.

[0013] In the embodiment of the present application, one end of the end cap is connected with the spring element of the spiral ejection structure, and the other end is arranged with an end cap top, and the end cap top is hemispherical.

[0014] According to another aspect of the present application, a blast hole is provided, comprising the uncoupled charge positioning device as described, wherein the uncoupled charge positioning device is arranged integrally in the blast hole, and each of the two ends of the sleeve of the uncoupled charge positioning device comprises an engaging unit, and the inside of the sleeve can accommodate a cartridge.

[0015] The present application has the advantages of simple structure, easy operation, adjustment of the position of uncoupled charge cartridge or charge by adjusting the angle and length of the bracket, sufficient destruction of the rock mass on the blasting side, reduction of the damage of the rock mass needing protection, guarantee of the stability of surrounding rock and the flatness of the excavation profile, improvement of the utilization rate of explosive energy, simple operation, high work efficiency, good safety, saving of economic cost, and wide application. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A cross-sectional view of the uncoupled charge positioning device provided by an embodiment of the present application is shown;

[0017] Figure 2 A side view of the uncoupled charge positioning device provided by an embodiment of the present application is shown;

[0018] Figure 3 A top view schematic diagram of an uncoupled charge positioning device according to an embodiment of the present invention is shown;

[0019] Figure 4 A three-dimensional structural schematic diagram of a sleeve provided according to an embodiment of the present invention is shown;

[0020] Figure 5 A three-dimensional structural schematic diagram of an annular interlocking groove provided in an embodiment of the present invention is shown;

[0021] Figure 6 A cross-sectional schematic diagram of a bracket provided in one embodiment of the present invention is shown;

[0022] Figure 7 A side view schematic diagram of a bracket provided according to an embodiment of the present invention is shown; and

[0023] Figure 8 A top view schematic diagram of a bracket provided in one embodiment of the present invention is shown. Detailed Implementation

[0024] It should be understood that the embodiments of the invention shown in the exemplary embodiments are merely illustrative. Although only a few embodiments have been described in detail in this invention, those skilled in the art will readily recognize that various modifications are possible without substantially departing from the teachings of the invention. Accordingly, all such modifications should be included within the scope of the invention. Other substitutions, modifications, variations, and deletions can be made to the design, operating conditions, and parameters of the following exemplary embodiments without departing from the spirit of the invention.

[0025] According to one aspect of the present invention, a non-coupled charge positioning device 10 is provided, such as... Figures 1-5 As shown, it includes: a sleeve 1, the sleeve 1 including a connecting unit 11 disposed thereon; and a plurality of supports 12 movably connected to the sleeve 1 via the connecting unit 11, the plurality of supports 12 being arranged along the circumference of the sleeve 1. The sleeve 1 can be a generally cylindrical sleeve with a hollow interior for accommodating explosive cartridges or explosive packages. By adjusting the angle and length of the supports 12, different positions of the decoupled explosive positioning device 10 can be achieved, thereby effectively improving the pre-splitting blasting effect, reducing slope support and maintenance costs, and minimizing economic losses from side-mounted blasting when the decoupled explosive positioning device 10 of the present invention is placed in and used in the blast hole.

[0026] In embodiments of the present application, the engaging unit 11 and the sleeve 1 can be integrally formed, and the sleeve 1 and the support 12 can be made of PVC. The sleeve 1 can include one or more engaging units 11, for example, one engaging unit 11 can be provided at each axial end of the sleeve 1, so as to provide better stable positioning of the sleeve 1. In such embodiments, the sleeve 1 can have a length of 100-1000 mm, an outer diameter of 35-52 mm, and a wall thickness of 1-5 mm, and the support 12 connected to the sleeve 1 through the engaging unit 11 can have an outer diameter of 2.5-7.0 mm at the middle portion thereof (as described in other parts of the present application). In other embodiments, only one engaging unit 11 can be provided at the middle portion of the sleeve 1.

[0027] In embodiments of the present application, the sleeve 1 includes an inner wall 13, an outer wall 14, and a space 15 provided between the inner wall 13 and the outer wall 14. The engaging unit 11 can include an annular undercut groove 2 provided on the inner wall 13 along the circumferential direction of the sleeve 1, and an annular cutout 16 defined by the outer wall 14 along the circumferential direction of the sleeve 1, the annular undercut groove 2 being oppositely arranged with the annular cutout 16. In Figure 4 the illustrated embodiments, the annular undercut groove 2 is located within the space 15, and a portion of the outer wall 14 corresponding to the annular undercut groove 2 provided on the inner wall 13 is removed, the removed portion forming the annular cutout 16. The width d2 (shown in Figure 5 ) of the annular undercut groove 2 along the axial direction of the sleeve 1 is greater than the width dl (shown in Figure 4 ) of the annular cutout 16 along the axial direction of the sleeve 1. Such arrangement facilitates the support 12 to slide within the space 15 and engage with the annular undercut groove 2, as described in other parts of the present application. In addition, the engaging unit 11 can further include an opening 3 provided on the annular undercut groove 2, through which the support 12 can enter the space 15 and engage with the annular undercut groove 2.

[0028] In embodiments of the present application, on the basis of referring to Figures 1-5 , further reference is made to Figures 6-8 , the support 12 includes a first end 21, the width of the first end 21 being greater than the width dl of the annular cutout 16 and smaller than the width d2 of the annular undercut groove 2, and the shape of the first end 21 can substantially correspond to the shape of the opening 3, so as to enable the first end 21 to enter the space 15 through the opening 3. In Figure 4In the illustrated embodiment, the first end 21 and the opening 3 can be generally rectangular or square in shape. However, other shapes, such as circular, oval, other polygonal shapes, etc. are within the scope of the present application. The first end 21 is provided with the engaging teeth 6, and the first end 21 is movable within the space 15 and engages with the annular engaging teeth groove 2 through the engaging teeth 6, thereby achieving engagement and disengagement of the bracket 12 with the sleeve 1, so as to adjust the angle of the bracket 12 relative to the sleeve 1.

[0029] In embodiments of the present application, the number of openings 3 can be multiple, and the multiple openings 3 are arranged at a predetermined angle on the circumference of the sleeve 1, and one opening 3 corresponds to one bracket 12 or one opening 3 corresponds to multiple brackets 12. In Figure 1 In the illustrated embodiment, three openings 3 are provided and correspondingly three brackets 12 are provided, each bracket 12 can enter the space 15 of the sleeve 1 through its corresponding opening 3, and such a configuration is particularly advantageous, after the uncoupled charge positioning device 10 is placed in the blast hole, by adjusting the length and angle of the bracket 12 (as described in other parts of the present application), the three ends of the bracket 12 can be abutted with the inner wall of the blast hole, and the contact points form a triangle, providing the most stable structure. In other embodiments, other numbers of openings 3 or other numbers of brackets 12 can be included. In additional embodiments, only one opening 3 can be included, and multiple brackets 12 can all enter the space 15 of the sleeve 1 through the unique opening 3.

[0030] In embodiments of the present application, the bracket 12 can further include a middle portion 22 connected to the first end 21 and a second end 23 connected to the middle portion 22, the width of the middle portion 22 is slightly smaller than the width d1 of the annular cutout 16, so that the middle portion 22 and the portion above the middle portion 22 can move smoothly through the annular cutout 16. The middle portion 22 can be a screw ejection structure 5, which includes an ejection inner core (not numbered in the figure), a spring element (not numbered in the figure) arranged on the ejection inner core, and an outer shell accommodating the ejection inner core. The second end 23 is provided with an end cap 24, one end of the end cap 24 is connected to the spring element of the screw ejection structure 5, and the other end is provided with an end cap top 4, and the end cap top 4 is hemispherical. Through the spring element and the ejection inner core of the screw ejection structure 5, the length of the bracket 12 can be adjusted, and the angle adjustment of the bracket 12 achieved by the sliding of the bracket 12 in the space 15 can achieve the positioning of the uncoupled charge positioning device 10 at different positions.

[0031] The embodiments of the present application are described in detail below.

[0032] The present application provides an uncoupled charge positioning device 10 and a method for using the same. The method for using the same can include the following steps:

[0033] Step 1, first install the support 12 from the opening 3, then adjust the support 12 to the appropriate angle and length according to the actual needs.

[0034] Step 2, after installing the support 12, place the device 10 into the blast hole, then complete the charging.

[0035] As shown in Figure 1 , Figure 2 , Figure 3 The uncoupling charging positioning device 10 of the present application comprises a sleeve 1 and a support 12. The main body of the sleeve 1 is a PVC pipe, and the sleeve 1 is provided with a support adjusting structure at both ends. The sleeve 1 can be divided into three layers, the first layer is an inner wall 13, the third layer is an outer wall 14, and the middle layer is located between the first layer and the third layer. The support adjusting structure is mainly a ring-shaped engagement groove 2, which is located in the middle layer of the PVC pipe. The third layer, i.e. the layer above the ring-shaped engagement groove, defines a ring-shaped cutout 16, and the width of the ring-shaped cutout 16 is smaller than the width of the ring-shaped engagement groove 2, so as to limit the support 12 within the space 15. The ring-shaped engagement groove 2 is provided with an opening 3 every 120 degrees, so as to insert the support 12. The lower end of the support 12 is a clamping tooth 6, and the angle of the support 12 can be adjusted by adjusting the position of the clamping tooth 6 in the ring-shaped engagement groove 2. The middle part 22 of the support 12 is a spiral ejection structure 5, which comprises an ejection inner core and an outer shell accommodating the ejection inner core, and in addition, at least a part of the inner core is wound with a spring element. The top end of the spiral ejection structure 5 is provided with an end cap 24, one end of which is connected with the spring element, and the other end is provided with a hemispherical end cap top 4, which is used for abutting against the inner wall of the blast hole.

[0036] Preferably, the sleeve 1 is a PVC pipe with a length of 100-1000 mm, an outer diameter of 35-52 mm, and a wall thickness of 1-5 mm.

[0037] Preferably, the outer diameter of the middle part 22 of the support 12 is 2.5-7.0 mm.

[0038] The working principle and use process of the present application are as follows: the sleeve 1 is provided with the support 12, which can make the charge be in the middle position of the blast hole. The bottom end of the support 12 has a clamping tooth 6, and the angle of the support 12 can be adjusted by sliding the clamping tooth 6 in the ring-shaped engagement groove 2. The support 12 is a spiral ejection structure 5, which can adjust the length of the support 12. By adjusting the angle and length of the support 12, the charge can be placed in any position in the blast hole, so that the blasted rock mass is fully destroyed. In use, first place the charge into the sleeve 1, and then install the support 12 from the opening 3. According to the actual situation, adjust the angle and length of each support 12 to make the charge be in the appropriate position, so as to achieve a more perfect blasting effect.

[0039] The application is a kind of uncoupling charge positioning device 10, through which the position of uncoupling charge can be flexibly adjusted, so as to fully destroy the rock mass on the blast side, reduce the damage of the rock mass needing protection, ensure the stability of surrounding rock and the flatness of the excavation contour, improve the utilization rate of explosive energy, and is simple to operate, high in working efficiency, good in safety and low in economic cost.

[0040] According to another aspect of the application, a blast hole is provided, which comprises the uncoupling charge positioning device 10 as described in the foregoing embodiments, wherein the uncoupling charge positioning device 10 can be arranged in the blast hole as a whole, and each end of the sleeve 1 of the uncoupling charge positioning device 10 can comprise an engaging unit 11, and the inside of the sleeve 1 can accommodate a cartridge.

[0041] It should be understood that all the embodiments, features and advantages described above for the uncoupling charge positioning device 10 according to the application are equally applicable to the blast hole according to the application, provided that they do not conflict with each other. That is, all the embodiments of the uncoupling charge positioning device 10 described above and their variations can be directly applied to the blast hole according to the application and directly incorporated herein. For the sake of brevity of the present disclosure, they will not be described again.

[0042] In summary, through the application, the position of uncoupling charge can be flexibly adjusted, the pre-splitting blasting effect can be effectively improved, the slope support and maintenance cost can be reduced, and the economic loss of slope blasting can be reduced.

[0043] The above description is only the preferred embodiment of the application, and is not intended to limit the scope of the application; if the application is modified or replaced without departing from the spirit and scope of the application, it should be covered within the protection scope of the claims of the application.

Claims

1. A decoupled charge positioning device, characterized by, include: A sleeve, the sleeve including a engagement unit disposed thereon, the sleeve including an inner wall, an outer wall and a space disposed between the inner wall and the outer wall, and the engagement unit including an annular engagement groove disposed on the inner wall along the circumference of the sleeve, an annular cut along the circumference of the sleeve and defined by the outer wall, and an opening disposed on the annular engagement groove, the annular engagement groove being disposed opposite to the annular cut; as well as Multiple brackets are movably connected to the sleeve via the engagement unit. The multiple brackets are arranged along the circumference of the sleeve. Each bracket includes a first end and is provided with a biting tooth. The first end enters the space through the opening and is movable within the space and engages with the annular biting tooth groove through the biting tooth.

2. The uncoupling charge positioning device of claim 1, wherein, The joining unit is integrally formed with the sleeve, and both the sleeve and the bracket are made of PVC.

3. The uncoupling charge positioning device of claim 1, wherein, The width of the annular interlocking groove along the axial direction of the sleeve is greater than the width of the annular cut along the axial direction of the sleeve.

4. The uncoupling charge positioning device of claim 1, wherein, The width of the first end is greater than the width of the annular cut and less than the width of the annular meshing groove.

5. The uncoupling charge positioning device of claim 1, wherein, The number of openings is multiple, and the multiple openings are arranged at predetermined angles in the circumferential direction of the sleeve, and one opening corresponds to one bracket.

6. The uncoupling charge positioning device of claim 4, wherein, The bracket further includes a middle section connected to the first end and a second end connected to the middle section. The width of the middle section is slightly smaller than the width of the annular cut and the middle section has a spiral ejection structure. The second end is provided with an end cap.

7. The uncoupling charge positioning device of claim 6, wherein, One end of the end cap is connected to the spring element of the spiral ejection structure, and the other end is provided with an end cap top, which is hemispherical.

8. A blasthole, characterized in that The device includes a decoupled charge positioning device as described in any one of claims 1-7, wherein the decoupled charge positioning device is integrally disposed within the borehole, and each end of the sleeve of the decoupled charge positioning device includes a coupling unit, and the sleeve is capable of accommodating the charge cartridge.

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