CN217110699U - Blasting big gun hole plugging device - Google Patents
Blasting big gun hole plugging device Download PDFInfo
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- CN217110699U CN217110699U CN202220327523.7U CN202220327523U CN217110699U CN 217110699 U CN217110699 U CN 217110699U CN 202220327523 U CN202220327523 U CN 202220327523U CN 217110699 U CN217110699 U CN 217110699U
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Abstract
The application relates to a blasting big gun hole plugging device includes: expand a section of thick bamboo and pressure equipment head outward, expand a section of thick bamboo outward and reach the pressure equipment head sets up in the big gun hole, expand a section of thick bamboo outward including the split piece that is the loudspeaker form and distribute, the pressure equipment head can stretch into the extrusion in the toper cavity of expanding a section of thick bamboo outward, and make the split piece expands outward and warp. The utility model provides a blasting big gun hole plugging device can carry out the shutoff to the big gun hole through expanding a section of thick bamboo outward, expands the split piece that a section of thick bamboo includes is the loudspeaker form and distributes outward, is convenient for expand the installation of a section of thick bamboo in the big gun hole outward on the one hand, and on the other hand combines the pressure equipment head can make the open expansion of split piece to make split piece and the pore wall of big gun hole extrude firmly together, make the split piece after the open expansion constitute the resistance that the explosive directly punched in the big gun hole.
Description
Technical Field
The application relates to the technical field of blasting, particularly, relate to a blasting big gun hole plugging device.
Background
In the production operation of blasting, a detonator and an explosive are generally placed in a blast hole, a sealing material is filled above the pipe explosive, and the sealing material has many types: comprises broken slag stone, loess, quick-setting cement, foam material, special blast hole sealing filler and the like. However, when the actual blasting operation is performed, a problem inevitably occurs when any packing material is selected: the phenomenon of 'blow-down' is that a detonator and an explosive explode in a blast hole, strong energy directly pushes a sealing material on the explosive out of the blast hole, substances except a medium in the blast hole are not damaged or are not damaged to a sufficient degree (such as rocks, coal, buildings and the like), and the phenomenon that the explosive explodes in the blast hole and the substances needing to be exploded do not destroy and burst is popular. The phenomenon is generally called as 'cupola' or 'celestial beauty blossoming' by the persons in the industry, and particularly, when the outdoor blasting operation is carried out, the smoke generated by the 'cupola' and the filling materials in blast holes are observed from a distance to directly wash the campsis.
The appearance of the 'blow-down' phenomenon greatly reduces the expected effect of blasting operation, often prolongs the construction period, increases the safety area during blasting, has potential safety hazards, even causes the failure of the whole blasting, and wastes manpower, military industry or civil explosive materials.
SUMMERY OF THE UTILITY MODEL
The utility model provides a blasting big gun hole plugging device can avoid appearing the blasting situation of "blow-down gun", makes on the explosive can act on the material that needs the blasting more fully, effectively improves blasting efficiency.
In order to achieve the above object, the utility model provides a blasting big gun hole plugging device, include: expand a section of thick bamboo and pressure equipment head outward, expand a section of thick bamboo outward and reach the pressure equipment head sets up in the big gun hole, expand a section of thick bamboo outward including the split piece that is the loudspeaker form and distribute, the pressure equipment head can stretch into the extrusion in the toper cavity of expanding a section of thick bamboo outward, and make the split piece expands outward and warp.
In an optional embodiment, the press-fitting head includes a conical circular truncated cone, the conical circular truncated cone includes an annular conical surface, the conical circular truncated cone is matched with the conical cavity of the outward expanding cylinder, and a cone angle of the annular conical surface is the same as a cone angle formed by the split pieces.
In an optional implementation mode, the outer expanding cylinder and the press-fitting head are simultaneously connected with a screw in a penetrating mode, an annular baffle is connected to the screw above the press-fitting head, a nut for the screw to be screwed is arranged at the bottom end of the outer expanding cylinder, and the screw can push the press-fitting head to stretch into and extrude the outer expanding cylinder through the annular baffle when rotating.
In an optional embodiment, a through hole penetrates through the center of the press-fitting head, the diameter of the through hole is larger than the outer diameter of the screw, the annular baffle is concentrically arranged with the screw, and the projection of the annular baffle in the vertical direction completely covers the through hole.
In an alternative embodiment, the annular baffle is welded to the screw as a unitary structure.
In an optional embodiment, the outer expanding cylinder further comprises a fixing bolt, the fixing bolt comprises a U-shaped inserting rod, and the tail end of the U-shaped inserting rod is inserted into the ear holes of any two of the split pieces to limit the outer expanding cylinder to rotate along with the screw rod.
In an optional implementation mode, the screw rod is connected with a rotating assembly in a split mode, the rotating assembly comprises a rotary disc and a connecting rod connected to the center of the rotary disc, the top of the screw rod is connected with a wrench sleeve, and the end of the connecting rod is connected with a wrench end.
In an optional embodiment, the split pieces are uniformly distributed on the circumferential direction of the outer expanding cylinder, and a plurality of the split pieces are converged at the closed end of the outer expanding cylinder.
In an alternative embodiment, a gap is arranged between every two adjacent split flaps, and the length of the gap is the same and is not less than 2/3 of the length of the outer expanding cylinder.
In an alternative embodiment, the outer expanding cylinder is made of wrought iron, and the press-fitting head is made of cast iron.
The utility model provides a blasting big gun hole plugging device can carry out the shutoff to the big gun hole through expanding a section of thick bamboo outward, expands the branch lamella that the loudspeaker form distributes that a section of thick bamboo includes outward, is convenient for expand the installation of a section of thick bamboo in the big gun hole outward on the one hand, and on the other hand combines the pressure equipment head can make the open expansion of split piece to make the pore wall of split piece and big gun hole firmly extrude together, make the split piece after the open expansion constitute the resistance of explosive direct impact in the big gun hole.
The press-fitting head can stretch into the conical cavity of the outward-expanding barrel and stretch into the conical cavity for extrusion under the action of external force, so that the split pieces gradually burst, and the close extrusion plugging effect of the outward-expanding barrel and the blast hole is further ensured.
Additional features and advantages of the present application will be described in detail in the detailed description which follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic view of the overall structure of a blast hole plugging device in the present application;
FIG. 2 is a diagram showing the relationship between the press-fitting head, the external expanding cylinder and the screw rod;
FIG. 3 is a schematic structural view of an external expanding cylinder in the present application;
fig. 4 is a diagram illustrating a usage state of the blasting hole plugging device in the present application.
Icon:
1-external expanding cylinder; 11-a split flap; 12-a nut; 13-ear hole; 14-a gap;
2-press mounting the head; 21-a through hole;
3-a screw; 31-an annular baffle; 32-inner hexagonal sleeve;
4-fixing the bolt; 41-inserting rod;
5, rotating a disc; 51-a connecting rod; 52-external hexagonal head.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
In the description of the present application, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when using, and are only used for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Referring to fig. 1 in combination with fig. 2-4, the present invention provides a blast hole plugging device, including: expand a section of thick bamboo 1 and pressure equipment head 2 outward, expand a section of thick bamboo 1 outward and pressure equipment head 2 sets up in the big gun hole, expand a section of thick bamboo 1 outward including the branch lamella 11 that is the loudspeaker form and distribute, pressure equipment head 2 can stretch into the extrusion in the toper cavity of expanding a section of thick bamboo 1 outward, and make branch lamella 11 expands outward and warp.
Blasting big gun hole plugging device in this application mainly used explodes the shutoff of going on the big gun hole in the operation, specifically can warp the split piece 11 that expands outward and firmly sticiss between the big gun hole lateral wall on expanding section of thick bamboo 1 outward, realizes the shutoff to the big gun hole to "unloading big gun" situation that appears when preventing the blasting. Through the effective shutoff of going on the big gun hole, can make the energy that the explosive produced more fully act on the material that needs the blasting when the blasting to improve the blasting operating mode, improve blasting efficiency.
The outer expanding cylinder 1 comprises the split pieces 11 which are distributed in a trumpet shape and can deform under the extrusion of the press-fitting head 2, so that the split pieces 11 blossomed completely are in a cherry blossom shape, and the split pieces 11 after blossoming are tightly extruded on the side wall of the blast hole, and the effective plugging of the blast hole is realized.
The press-fitting head 2 can be accommodated in the conical cavity of the outer expanding barrel 1, and gradually extends to the necking end of the outer expanding barrel 1 to advance under the action of external force, and at least one part of the press-fitting head 2 can be always attached to the inner side wall of the outer expanding barrel 1 when the flaring end moves to the necking end, and the split piece 11 is extruded, so that the split deformation of the split piece 11 is facilitated.
The utility model provides a pressure equipment head 2 with expand a 1 components of a whole that can function independently setting outward, pressure equipment head 2 includes the toper round platform, the shape of toper round platform and the shape phase-match that expands a 1 toper cavity outward, can make pressure equipment head 2 hold in the toper cavity that expands a 1 outward, be provided with the cyclic annular conical surface on the toper round platform, the cone angle of the cyclic annular conical surface is the same with the cone angle that split piece 11 constitutes to can make at least partly laminating mutually with the interior lateral wall that expands a 1 outward of cyclic annular conical surface. Through this kind of mode of setting up, can make pressure equipment head 2 stretch into the extruded in-process in the toper cavity, act on outer expanding section of thick bamboo 1 with pressure equipment power all the time to satisfy the deformation demand that split piece 11 blooms gradually.
The press-fitting force of the press-fitting head 2 is mainly performed through the extrusion force acting on the press-fitting head 2, specifically, the outer expanding cylinder 1 and the press-fitting head 2 are simultaneously penetrated with the screw rods 3, the screw rods 3 firstly penetrate through the press-fitting head 2 and then are connected with the outer expanding cylinder 1, the screw rods 3 and the press-fitting head 2 are in clearance fit, and the outer expanding cylinder 1 and the screw rods 3 are in threaded connection.
The screw rod 3 above the press-fitting head 2 is connected with an annular baffle plate 31, the extrusion force mainly comes from the push of the annular baffle plate 31 to the press-fitting head 2, the bottom end of the outer expanding cylinder 1 is provided with a nut 12 for the screw rod 3 to be screwed, the screw rod 3 is pushed forwards to move based on the screwing relation of the screw rod 3 and the nut 12 at the bottom end of the outer expanding cylinder 1 when rotating, and the annular baffle plate 31 is fixedly connected on the screw rod 3 to be pushed forwards simultaneously along with the screw rod 3.
With the continuous propulsion of the screw rod 3, the annular baffle plate 31 pushes the press-fitting head 2 to extend into and extrude the external expanding barrel 1, and based on the fact that at least one part of the annular conical surface is attached to the inner side wall of the external expanding barrel 1, the split piece 11 of the external expanding barrel 1 can be expanded and deformed outwards, so that the external expanding barrel 1 is expanded to the maximum extent, and the split piece 11 and the side wall of the blast hole are extruded tightly.
Based on the clearance fit relation between the press-fitting head 2 and the screw 3, the annular baffle 31 can push the press-fitting head 2 to extend and move towards the necking end of the outward expanding cylinder 1, so that the reliability of the press-fitting head 2 applying press-fitting force is ensured. Preferably, a through hole 21 is penetratingly formed in the center of the press-fitting head 2, and in order to maintain the clearance fit relationship between the press-fitting head 2 and the screw 3, the diameter of the through hole 21 is larger than the outer diameter of the screw 3, so that the wear of the external thread of the screw 3 in the through hole 21 can be reduced, and the service life of the screw 3 can be prolonged.
In order to ensure the reliability of the pressing force applied by the annular baffle 31 to the press-fitting head 2, the annular baffle 31 is arranged concentrically with the screw 3, and further, the projection of the annular baffle 31 in the vertical direction completely covers the through hole 21. Through this kind of mode of setting, can make the pressure equipment power direction that pressure equipment head 2 exerted the same with the axial of screw rod 3 to prevent that pressure equipment head 2 from appearing the skew at the removal in-process, and then causing the influence to the deformation state of expanding section of thick bamboo 1 outward.
From the angle that the annular baffle 31 follows the screw rod 3 and advances simultaneously, the annular baffle 31 in this embodiment is fixedly connected with the screw rod 3, and preferably, the annular baffle 31 and the screw rod 3 are welded into an integral structure, so that the annular baffle 31 can rotate together with the screw rod 3 and push the press-fitting head 2 to move simultaneously in rotation, and the effectiveness of the press-fitting force is ensured.
The extrusion in-process of the pressure equipment head 2 to expanding a section of thick bamboo 1 outward, in order to prevent that the outer section of thick bamboo 1 that expands from following the rotation of screw rod 3 and influencing the deformation effect, need fix expanding a section of thick bamboo 1 outward at the pressure equipment in-process. The fixing of the external expanding barrel 1 is specifically carried out through the fixing bolt 4, in the operation process, the fixing bolt 4 needs to be inserted from the outside of the blast hole and inserted on the split piece 11, and then the external expanding barrel 1 is prevented from rotating in the press fitting process.
The rotation of screw rod 3 specifically goes on through rotating assembly, and rotating assembly includes carousel 5 and connects at the connecting rod 51 at carousel 5 center, and connecting rod 51 mainly plays lever drive's effect, and the top of screw rod 3 is connected with the spanner sleeve, and the end connection of connecting rod 51 has the spanner end. In this embodiment, the wrench socket is the inner hexagonal socket 32, and correspondingly, the wrench end is the outer hexagonal end 52, and when the screw 3 is rotated, the inner hexagonal socket 32 is sleeved outside the outer hexagonal end 52, and the rotating disc 5 is rotated to rotate the screw 3.
In order to ensure the deformation effect of the opening and expansion of the outer expanding cylinder 1, the split pieces 11 are uniformly distributed on the circumferential direction of the outer expanding cylinder 1, and the plurality of split pieces 11 are intersected at the closing end of the outer expanding cylinder 1. Through the evenly distributed split pieces 11, the split pieces 11 can be promoted to be expanded into even cherry blossom shapes from the initial morning glory shapes, and therefore the uniformity of the split pieces 11 for plugging blast holes is improved. A plurality of branch lamella 11 meet in the convergent end of expanding a section of thick bamboo 1 outward, can guarantee that at least some of the annular conical surface on pressure equipment head 2 contacts with the awl mouth position laminating of expanding a section of thick bamboo 1 outward all the time to guarantee pressure equipment head 2 to expand a section of thick bamboo 1's extrusion effect outward.
Meanwhile, in order to enable the split pieces 11 to be smoothly deformed, the gaps 14 are formed between the adjacent split pieces 11, the number of the gaps 14 on the outer expanding tube 1 is six, the six gaps 14 are identical in length, and the same deformation result of the split pieces 11 can be ensured.
Based on the requirement that the plurality of split blades 11 are intersected at the closing end of the outer expanding barrel 1, the length of each notch 14 is not less than 2/3 of the length of the outer expanding barrel 1, so that the press-fitting head 2 can be attached to the intersection between the split blades 11, and the press-fitting force can be stably output.
It needs to point out, needs to carry out the angle consideration of deformation shutoff big gun hole from split piece 11, the utility model provides an outer material that expands a section of thick bamboo 1 chooses for use toughness and the better wrought iron of ductility, and the material of pressure equipment head 2 is cast iron, can make pressure equipment head 2 cracked into more tiny piece after the explosive blasting, even if receive the impact fly to the back in the air from the big gun hole, also can reduce and injure the risk by a crashing object.
Through the utility model provides a blasting big gun hole plugging device can effectively realize the shutoff to the big gun hole, reduces the blasting state of "air defense cannon" in the at utmost to effectively improve blasting efficiency. After the blasting blast hole plugging device is used, through multiple tests and practical application, the probability of 'emptying cannons' can be reduced by about 95%, the technical difficulty of emptying cannons in blast holes during blasting operation is broken through, the labor cost is greatly reduced, the blasting efficiency is improved, and 3% -4% of explosives can be saved.
The following description will be made by combining the specific composition of each structure and the method of use with the principle.
The blasting hole plugging device mainly comprises an external expanding cylinder 1, a press-fitting head 2, a screw rod 3, a fixing bolt 4 and a force application turntable 5.
Manufacturing the external expanding cylinder 1: cutting a 2.5-3 mm thick wrought iron plate into a circular shape, cutting six notches 14 at equal intervals on the periphery of the wrought iron plate, pressing the circular shape by using a machine to obtain a horn cylinder shape, wherein the depth of the notches 14 accounts for 2/3 of the total length of the horn cylinder, drilling two holes at the uppermost end of the horn cylinder to serve as ear holes 13 oppositely, drilling holes at the bottom of the horn cylinder, welding a nut 12 below the drilled holes, namely the bottom of the horn cylinder, wherein the diameter of the drilled holes is equal to the inner diameter of the nut 12, and the shape of the whole external expanding cylinder 1 is in a morning glory shape in an initial state.
The press-fitting head 2 is made of cast iron, two end faces of the conical round table are planes, the diameter of the large head end is smaller than that of the flaring end of the outer flaring barrel 1, the center of the press-fitting head 2 is provided with a through hole 21 in a penetrating mode, and the diameter of the through hole 21 is larger than that of the screw rod 3.
The force application rotary disc 5 is a steel ring with the diameter of 40-50cm, 3-4 steel bars are welded inside the steel ring, a connecting rod 51 with the diameter of 3-4cm is welded in the center of the steel ring, an outer hexagonal end 52 is connected to the connecting rod 51 and is welded firmly, the processing of the force application rotary disc 5 is completed, and the force application rotary disc 5 can also be replaced by a steering wheel of a scrapped motor vehicle for use.
During assembly, the press-fitting head 2 is firstly extended into the conical cavity of the external expanding cylinder 1, then the annular baffle plate 31 is placed on the upper portion of the through hole 21, the screw rod 3 penetrates through the annular baffle plate 31, the press-fitting head 2 and the external expanding cylinder 1 from top to bottom, the bottom end of the screw rod 3 is screwed into the nut 12 at the bottom of the external expanding cylinder 1, and finally the annular baffle plate 31 is welded and fixed after being axially lifted by 1-2cm along the screw rod 3.
When in use, firstly, explosive and detonator are put into the blast hole, then, blast hole sealing material is filled, when the blast hole is to be filled, a blasting blast hole sealing device is put into the blast hole, a screw rod 3 is penetrated, a fixing bolt 4 is inserted into two lug holes 13 of the split piece 11, the fixing bolt 4 is clamped outside the blast hole to prevent the fixing bolt 4 and the blasting blast hole sealing device from rotating in the blast hole, then, an inner hexagonal sleeve 32 of the force application rotary disc 5 is arranged on an outer hexagonal end 52 at the top of the screw rod 3, then, the rotary disc 5 is twisted clockwise by hand, the fixing bolt 4 is clamped, thus, under the joint extrusion of the annular baffle plate 31 and the press-mounting head 2, the split piece 11 of the outer expanding cylinder 1 starts to expand, unfold and burst, and is tightly extruded with the hole wall of the blast hole to generate strong resistance, and after the installation, the force application rotary disc 5 is rotated anticlockwise, the screw rod 3 is separated from the external expanding cylinder 1, and the screw rod 3 and the fixed bolt 4 are pulled out to be reserved for next use. In the blast hole with softer material (such as soil, sand and the like), the plugging device is preferably placed at a distance close to the explosive, a little sealing filler is filled firstly, and then the sealing filler is filled on the plugging device, so that the method can be applied to plugging the blast hole with softer material in a targeted manner.
After the blast hole plugging device is placed in a blast hole, the fixed bolt 4 is inserted into the ear hole 13 of the split piece 11 on the outer expanding cylinder 1, fixing the bolt 4 on the ground by a tool to prevent the outer expanding cylinder 1 from rotating in the deformation process, connecting the screw 3 with the force applying turntable 5 through the outer hexagonal end 52 and the inner hexagonal sleeve 32, rotating the force applying turntable 5 clockwise, rotating the nut 12 at the bottom of the outer expanding cylinder 1 and the annular baffle 31 above the press-fitting head 2 through the rotation of the screw 3, generating strong mutual pulling action between the two, under the action, the press-fitting head 2 moves downwards, the annular conical surface on the press-fitting head 2 can expand the split sheets 11 on the external expansion cylinder 1, and expands outwards and blooms until the split sheet 11 is tightly extruded with the wall of the blast hole, and stronger resistance is generated between the blast hole and the plugging device, so that the explosive energy is prevented from being discharged in the blast hole. The powerful energy of explosive detonation back can outwards promote the packing in the big gun hole together with plugging device, this moment because the contact point of plugging device and big gun hole wall is outer section of thick bamboo 1 that expands, in addition the pressure equipment head 2 props in outer section of thick bamboo 1 and presses, consequently the device can be along with the removal of packing with the more and more tight of big gun hole jam, the deformation degree of outer section of thick bamboo 1 is big more, the resistance of jam is big more, whole outer section of thick bamboo 1 becomes discus form at last, and can reach the best shutoff value in the twinkling of an eye of blasting, thereby the fine phenomenon of having avoided the interior empty big gun of big gun hole and the time of a rush of blasting when blasting.
The utility model provides a blasting big gun hole plugging device, the raw materials for production source is extensive, expands a section of thick bamboo 1 available scrap iron processing preparation outward, and pressure equipment head 2 adopts the cast iron once only to cast into, and application of force carousel 5 and fixed bolt 4 can use repeatedly, and plugging device both can the manual work also can mechanical assembly line production, and low cost can use widely on a large scale moreover. When the plugging device is used, the lower part of the plugging device is disposable, and the probability of finding the plugging device after blasting is very small, even if the plugging device finds the plugging device to be seriously deformed, so that the plugging device cannot be used. When the screw rod 3 with different diameters and lengths is produced and used according to the diameter of a blast hole in machining and application, the outer expanding cylinder 1 only can be made of wrought iron with strong flexibility but not steel, otherwise, the using effect and the performance are influenced by greatly reducing the effect.
It should be noted that, in use, an electric wrench or a pneumatic wrench should be avoided as much as possible to replace the force application rotary disk 5, so as to prevent explosion and safety accidents caused by the generation of static electricity to ignite the explosive.
It should be noted that the features of the embodiments in the present application may be combined with each other without conflict.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (9)
1. A blast hole plugging device, comprising: the outer expanding cylinder and the press-fitting head are arranged in a blast hole, the outer expanding cylinder comprises split pieces which are distributed in a trumpet shape, and the press-fitting head can stretch into and extrude in a conical cavity of the outer expanding cylinder and enables the split pieces to be expanded and deformed;
the press-fitting head comprises a conical round table, the conical round table comprises an annular conical surface, the conical round table is matched with the conical cavity of the outward-expanding cylinder, and the cone angle of the annular conical surface is the same as the cone angle formed by the split piece.
2. The device for plugging a blast hole of a blast hole according to claim 1, wherein a screw rod is simultaneously threaded through the outer expanding barrel and the press-fitting head, an annular baffle is connected to the screw rod above the press-fitting head, a nut for threaded connection of the screw rod is arranged at the bottom end of the outer expanding barrel, and the screw rod can push the press-fitting head to extend into and extrude the outer expanding barrel through the annular baffle when rotating.
3. The blasting blasthole plugging device of claim 2, wherein a through hole is formed through the center of the press-fitting head, the diameter of the through hole is larger than the outer diameter of the screw, the annular baffle is concentric with the screw, and the projection of the annular baffle in the vertical direction completely covers the through hole.
4. The blasthole closure device of claim 3, wherein the annular baffle is welded to the threaded rod as a unitary structure.
5. The blasthole plugging device as recited in claim 2, further comprising a fixing latch, wherein the fixing latch comprises a U-shaped insertion rod, and the tail end of the U-shaped insertion rod is inserted into the ear holes of any two of the split pieces to limit the rotation of the outer expanding cylinder along with the screw rod.
6. The blasting blasthole plugging device of claim 2, wherein the screw is separately connected with a rotating assembly, the rotating assembly comprises a turntable and a connecting rod connected to the center of the turntable, a wrench socket is connected to the top of the screw, and a wrench end is connected to the end of the connecting rod.
7. The blast hole plugging device according to any one of claims 1 to 6, wherein said split pieces are uniformly arranged in a circumferential direction of said outer expanding barrel, and a plurality of said split pieces meet at a closed end of said outer expanding barrel.
8. The blasthole plugging device as defined in claim 7, wherein a gap is formed between adjacent ones of said split pieces, and the length of said gap is equal to or not less than 2/3 of the length of said flaring sleeve.
9. The blasthole plugging device as defined in claim 7, wherein the outer expanding sleeve is made of wrought iron, and the press-fitting head is made of cast iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220327523.7U CN217110699U (en) | 2022-02-17 | 2022-02-17 | Blasting big gun hole plugging device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220327523.7U CN217110699U (en) | 2022-02-17 | 2022-02-17 | Blasting big gun hole plugging device |
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| CN217110699U true CN217110699U (en) | 2022-08-02 |
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| CN202220327523.7U Active CN217110699U (en) | 2022-02-17 | 2022-02-17 | Blasting big gun hole plugging device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115325894A (en) * | 2022-08-31 | 2022-11-11 | 中铁十八局集团有限公司 | Three-order cut blasting structure and blasting method for ultra-hard rock tunnel |
-
2022
- 2022-02-17 CN CN202220327523.7U patent/CN217110699U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115325894A (en) * | 2022-08-31 | 2022-11-11 | 中铁十八局集团有限公司 | Three-order cut blasting structure and blasting method for ultra-hard rock tunnel |
| CN115325894B (en) * | 2022-08-31 | 2023-08-29 | 中铁十八局集团有限公司 | Third-order cut blasting structure and blasting method for ultra-hard rock tunnel |
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