CN212963061U - Blast hole orifice supporting device - Google Patents

Abstract

The utility model relates to a big gun hole drill way strutting arrangement is provided with annular gasbag, apron, connecting wire, annular gasbag is provided with lateral wall, centre bore, gasbag chamber, the gasbag chamber is the ring column shape, is located be provided with the inflation inlet on the lateral wall in the centre bore, the apron set up in the top of centre bore, still be provided with the tie wire hole on the annular gasbag lateral wall, the connecting wire is provided with two tip, and one end is fixed in the tie wire hole, and the other end is connected with the lower fixed surface of apron.

Description

Blast hole orifice supporting device

Technical Field

The utility model relates to a resource exploitation field especially relates to a big gun hole drill way strutting arrangement.

Background

In the mining operation of surface mines, drilling blasting is an important production link. Generally, a working face platform is formed by blasting step by step from top to bottom, blast holes are drilled downwards in the working face platform, then explosives are filled into the blast holes, and a mineral seam below the working face platform is blasted into small ore blocks. When drilling the blast holes, a plurality of blast hole positions are arranged on the working face platform at intervals according to a blasting design scheme. And after the drilling machine enters the field, drilling holes one by one according to the positions of blast holes. When the drilling machine is driven to an adjusted position in the working surface platform, it may press against the mouth of a previously drilled borehole. On the other hand, when explosive is charged into a blast hole, an explosive truck and an operator who enter the blast hole may crush or step on the hole of the drilled blast hole. The lateral wall rock mass in big gun hole drill way itself is comparatively loose, under the exogenic action, can take place to collapse or the sediment that falls, to the rock that drops of big gun hole bottom, leads to the effective degree of depth of big gun hole to be less than the design value, and final effective powder charge degree of depth diminishes, influences the blasting efficiency. How to avoid the blast hole orifice to be destroyed under external force becomes the problem that needs to be solved.

SUMMERY OF THE UTILITY MODEL

In view of the above, there is a need for an easy to use blasthole port support arrangement. In order to solve the technical problem, the technical scheme of the utility model is that: the utility model provides a big gun hole drill way strutting arrangement, is provided with annular gasbag, apron, connecting wire, annular gasbag is provided with lateral wall, centre bore, gasbag chamber, the gasbag chamber is the ring cylindricality, is located be provided with the inflation inlet on the lateral wall in the centre bore, the apron set up in the top of centre bore, still be provided with the tie wire hole on the annular gasbag lateral wall, the connecting wire is provided with two tip, and one end is fixed in the tie wire hole, and the other end is connected with the lower fixed surface of apron.

Further preferably, a clip is further provided, and the clip is clipped on the inflation opening.

Further preferably, the lower surface of the cover plate is provided with a lug, the lug is provided with a via hole, and one end of the connecting wire is bound on the via hole.

Further preferably, the lower end part of the side wall of the annular air bag is provided with a sheet bulge, the sheet bulge is provided with a binding wire hole, and one end of the connecting wire is bound on the binding wire hole.

Further preferably, the diameter of the cover plate is larger than the diameter of the central hole.

Further preferably, the thickness of the cover plate is less than 1/4 of the inflated thickness of the annular bladder.

Further preferably, the connecting wire is a spring wire with elasticity, and the total length of the connecting wire is greater than the thickness of the annular airbag after inflation.

Further preferably, after the annular air bag is inflated, the height of the air bag cavity is not larger than the diameter of the central hole.

Further preferably, the annular air bag is provided with an upper layer and a lower layer, and air bag cavities of the upper layer and the lower layer of the annular air bag are communicated.

Further preferably, the air bag cavities of the upper layer and the lower layer of the annular air bag are only provided with one inflation port.

Compared with the prior art, the utility model discloses following beneficial effect has: the side wall of the blast hole orifice is supported by the annular air bag, the side wall of the blast hole orifice is prevented from being loosened and collapsed under the action of external force, when explosive is required to be filled into the blast hole, a central hole of the annular air bag provides a channel for filling the explosive, the cover plate is taken up, the explosive is filled into the blast hole from the central hole of the annular air bag, the annular air bag is always kept in a compression state on the side wall of the blast hole orifice, the condition that the rock which is loosened and collapsed on the side wall of the blast hole orifice is mixed into the emulsion explosive is avoided in the process of filling the emulsion explosive into the blast hole until the explosive is completely filled, and when the blast orifice is required to be backfilled with muck and sealed, the blast hole orifice supporting device is taken away. Because when filling the explosive, operation personnel and vehicle can walk around near the big gun hole drill way, and the device can ensure that at the whole in-process of filling the explosive, big gun hole drill way lateral wall is in the state of being compressed tightly always, not only can ensure the effective degree of depth of big gun hole, can also ensure that the explosive can not mix into the slabstone. The device is easy to operate and low in cost.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

Fig. 1 is a schematic view of a blast hole orifice supporting device according to a first embodiment of the present invention.

Fig. 2 is a schematic side view of a blast hole orifice supporting device according to a second embodiment of the present invention.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the objects of the present invention, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.

Example one

Referring to fig. 1, a blast hole orifice supporting device is provided with an annular airbag 1, a cover plate 2 and a connecting wire 3, wherein the annular airbag 1 is provided with a side wall 11, a central hole 13 and an airbag cavity 12, the airbag cavity 12 is in an annular column shape, an inflation inlet 14 is arranged on the side wall 11 positioned in the central hole 13, the cover plate 2 is arranged at the top of the central hole 13, the side wall 11 of the annular airbag 1 is further provided with a binding hole 15, the connecting wire 3 is provided with two end portions, one end of the connecting wire is fixed to the binding hole 15, and the other end of the connecting wire is fixedly connected with the lower surface of the.

The side wall 11 of the annular air bag 1 is made of rubber and has elasticity.

A clip 4 is also provided, the clip 4 clipping onto the inflation port 14.

The lower surface of apron is provided with the lug, is provided with the via hole on the lug, the one end of connecting wire 3 is tied up on this via hole.

The lower end part of the side wall 11 of the annular air bag 1 is provided with a sheet bulge 16, the sheet bulge 16 is provided with a binding wire hole 15, and one end of the connecting wire 3 is bound on the binding wire hole 15.

The diameter of the cover plate 2 is larger than that of the central hole 13, and the diameter of the cover plate 2 is not larger than that of the annular air bag 1.

The thickness of the cover plate 2 is less than 1/4 of the inflated thickness of the annular airbag 1.

The connecting wire 3 is a spring wire with elasticity, and the total length of the connecting wire 3 is greater than the thickness of the annular airbag 1 after inflation.

After the annular air bag 1 is inflated, the height of the air bag cavity 12 is not larger than the diameter of the central hole 13.

Example two

Referring to fig. 2, the annular airbag 1 is provided with an upper layer and a lower layer, and airbag cavities 12 of the upper layer and the lower layer of the annular airbag 1 are communicated.

The airbag cavities 12 of the upper layer and the lower layer of the annular airbag 1 are only provided with one inflation opening 14.

The rest is the same as the first embodiment.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention has been disclosed by the preferred embodiment, it is not limited to the present invention, and any person skilled in the art can make modifications or changes equivalent to the equivalent embodiments by utilizing the above disclosed technical contents without departing from the technical scope of the present invention, but all the modifications, changes and changes of the technical spirit of the present invention made to the above embodiments are also within the scope of the technical solution of the present invention.

Claims (10)

1. The utility model provides a big gun hole drill way strutting arrangement, its characterized in that is provided with annular gasbag, apron, connecting wire, annular gasbag is provided with lateral wall, centre bore, gasbag chamber, the gasbag chamber is the annular column shape, is located be provided with the inflation inlet on the lateral wall in the centre bore, the apron set up in the top of centre bore, still be provided with the tie wire hole on the annular gasbag lateral wall, the connecting wire is provided with two tip, and one end is fixed in the tie wire hole, and the other end is connected with the lower fixed surface of apron.

2. A blasthole port bracing arrangement as claimed in claim 1, further provided with a clip which clips onto the inflation port.

3. A blasthole aperture bracing arrangement as claimed in claim 1, wherein the underside of the shroud is provided with lugs having apertures therethrough to which one end of the connecting wire is secured.

4. A blasthole orifice support apparatus as in claim 1 wherein the lower end of the annular air bag sidewall is provided with a tab projection, said tab projection being provided with a wire-tying hole to which one end of said attachment wire is tied.

5. A blasthole port bracing arrangement as claimed in claim 1, wherein the diameter of the cover plate is greater than the diameter of the central bore.

6. A blasthole port bracing arrangement as claimed in claim 1, wherein the thickness of said cover is less than 1/4 of the inflated thickness of said annular envelope.

7. A blasthole orifice bracing arrangement as claimed in claim 1, wherein the connecting line is a resilient spring wire, the total length of the connecting line being greater than the inflated thickness of the annular bladder.

8. A blasthole port hole support apparatus as in claim 1 wherein the height of the bladder cavity is no greater than the diameter of the central bore after inflation of said annular bladder.

9. The blasthole orifice support device of claim 1, wherein the annular air bag is provided with an upper layer and a lower layer, and air bag cavities of the upper layer and the lower layer of the annular air bag are communicated.

10. A blasthole orifice bracing arrangement as claimed in claim 9, wherein only one inflation port is provided for the air cell chambers of the upper and lower layers of the annular air cell.

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