CN112627767A

CN112627767A - Blasting big gun hole plugging device

Info

Publication number: CN112627767A
Application number: CN202011548491.5A
Authority: CN
Inventors: 焦彪彪
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-04-09

Abstract

The invention aims to provide a convenient and quick blasting blasthole plugging device for plugging blastholes, which comprises an upper supporting and positioning part and a lower elastic plugging part, wherein the supporting and positioning part and the elastic plugging part are separated by a partition plate; the upper supporting and positioning part main body is a cylinder shell, a plurality of supporting rods are hinged to the outer wall of the cylinder shell, and the supporting rods can rotate outwards around the hinged points of the supporting rods and the cylinder shell under the pushing action of the driving rods, so that the other end parts of the supporting rods are supported in the direction far away from the outer wall surface of the cylinder shell; the plugging device has the advantages of convenient plugging operation, good plugging and sealing effects, strong anti-sliding property after positioning and repeated use.

Description

Blasting big gun hole plugging device

Technical Field

The invention belongs to the technical field of blasting blasthole plugging, and particularly relates to a blasting blasthole plugging device.

Background

In underground engineering, mining engineering such as mining and stone mining, safe blasting demolition of hard rocks and the like and municipal construction engineering, the drilling and blasting method construction is still the method with the widest application and the best effect, and one of the most important factors influencing the effect of the drilling and blasting method is plugging of blast holes. The blast hole plugging can prevent the explosive energy from escaping and scattering, ensure that the explosive energy of the explosive is used for breaking rock as much as possible, and directly influence the blasting effect due to the fact that the plugging is not in place or tight.

The traditional blasthole plugging is mainly to use an artificial wooden blasthole stick to plug or quick-drying cement plugging, obviously, materials are easy to fall into the blasthole to influence the plugging effect, the blasthole is not only vertically downward, but also can incline upwards or completely vertically upwards in the same direction, the difficulty of the traditional plugging technology in plugging the blasthole is higher, and the construction is very inconvenient.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide the blasting blasthole plugging device for conveniently and quickly plugging blastholes, which is convenient to plug and operate, good in plugging and sealing effect, extremely strong in sliding resistance after positioning and capable of being repeatedly used.

The technical scheme adopted by the invention is as follows: a blasting blasthole plugging device comprises an upper supporting and positioning part and a lower elastic plugging part, wherein the supporting and positioning part and the elastic plugging part are separated by a partition plate; the upper supporting and positioning component main body is a cylinder shell, a plurality of supporting rods are hinged to the outer wall of the cylinder shell, and the supporting rods can rotate outwards around hinged points of the supporting rods and the cylinder shell under the pushing action of the driving rods, so that the other end portions of the supporting rods are supported in the direction far away from the outer wall surface of the cylinder shell.

The elastic plugging component comprises a rubber cylinder body, a pushing plate, a limiting plate, a central shaft, a wear-resistant flexible sheet, an upper locking ring and a lower locking ring, wherein the limiting plate is a circular plate structure sleeved on the central shaft and is abutted to the partition plate; the central shaft can slide up and down relative to the limiting plate, the main body of the push plate is of a circular plate structure and is fixedly connected with the bottommost end of the central shaft, the limiting plate and the push plate are the same in diameter, and the outer peripheral surfaces of the limiting plate and the push plate are provided with threads; the rubber cylinder body is a cylindrical rubber soft body which can deform under pressure, the rubber soft body is provided with a through hole along the central axis of the rubber soft body, and the rubber cylinder body is sleeved on the central shaft and is positioned between the limiting plate and the pushing plate through the through hole; the wear-resistant flexible sheets are arc-shaped sheets formed by bending rectangular sheet structures, the length of each arc-shaped sheet is the same as that of the rubber cylinder, the width of each arc-shaped sheet is one third or one fourth of the circumference of the cross section of the rubber cylinder, the wear-resistant flexible sheets are coated on the peripheral cylindrical surface of the rubber cylinder in a multilayer manner, every three or four wear-resistant flexible sheets are spliced into a cylindrical surface, a gap between every two adjacent wear-resistant flexible sheets on each cylindrical surface is positioned at the middle position of one wear-resistant flexible sheet on the outer cylindrical surface of each cylindrical surface, namely the gap between the wear-resistant flexible sheets on the inner layer is covered by the wear-resistant flexible sheets on the outer cylindrical surface of each cylindrical surface, and the wear-resistant flexible sheets coated on the outer surface of the rubber cylinder in a multilayer manner enable the diameter of the cross section circle of the cylindrical surface formed by; go up the lock ring and lock ring down and be the ring structure that has the internal thread, the internal diameter of ring structure with the circle diameter of slurcam and limiting plate is the same, and the axial length of ring structure is greater than slurcam and limiting plate thickness, preferred, the axial length of going up the lock ring is greater than the thickness of twice limiting plate, the axial length of locking ring is greater than the twice thickness that promotes down, it is in to go up the lock ring and twist soon through screw-thread fit the limiting plate periphery and with the upper end of the cylinder that rubber cylinder and wear-resisting flexible piece constitute with the limiting plate locking together, the lock ring is twisted soon through screw-thread fit down the slurcam periphery and with the lower extreme of the cylinder that rubber cylinder and wear-resisting flexible piece constitute with the slurcam locking together. Specifically, the upper end and the lower end of the peripheral surface of a cylinder formed by the rubber cylinder body and the wear-resistant flexible sheet are wound with a plurality of layers of raw material belts, and the upper locking ring and the lower locking ring are screwed on the raw material belts.

The central shaft sequentially penetrates through the limiting plate and the partition plate and then extends into the cylinder shell, and a driving rod structure is formed in the cylinder shell and specifically comprises a first hinged ring body and a second hinged ring body which are fixed on the central shaft, a plurality of first driving rods hinged with the first hinged ring bodies are distributed on the periphery of the first hinged ring bodies in an array mode, and one end, far away from the first hinged ring bodies, of each first driving rod is hinged to a rod body of each first supporting rod; a plurality of second driving rods hinged with the second hinged ring bodies are distributed on the periphery of the second hinged ring bodies in an array mode, and one end, far away from the second hinged ring bodies, of each second driving rod is hinged to a rod body of the second supporting rod; first actuating lever with the second actuating lever is keeping away from or is hugging closely around its pin joint during the center pin, both keep the operating condition that is parallel to each other all the time, when first actuating lever with the second actuating lever keeps the synchronous motion that is parallel to each other all the time, for making first bracing piece and second bracing piece by the same height of outside support, length between two pin joints on the second bracing piece needs to be greater than length between two pin joints on the first bracing piece, the articulated position distance of second actuating lever and second bracing piece promptly length between the articulated position of second bracing piece and cartridge case is greater than the articulated position distance of first actuating lever and first bracing piece length between the articulated position of first bracing piece and cartridge case. The upper end of the central shaft is connected with the threaded rod through a bearing or a ball joint, so that the rotary motion of the threaded rod cannot be transmitted to the central shaft.

The cylinder shell main body is of a cylindrical structure, a partition plate is fixedly arranged at the lower end of the cylinder shell main body, an upper flange plate is fixedly arranged at the upper end of the cylinder shell main body, a plurality of first support rod accommodating holes which extend along the axial direction of the cylinder shell and penetrate through the wall surface of the cylinder shell and a plurality of second support rod accommodating holes which extend along the axial direction of the cylinder shell and penetrate through the wall surface of the cylinder shell are distributed on the cylinder shell in an array mode at the upper circumference, the first support rod accommodating holes are spaced from the upper flange plate and have a first axial length, the second support rod accommodating holes are spaced from the upper flange plate and have a second axial; a cylinder body hinge hole is formed in one end, close to the upper flange, of the first support rod accommodating hole, and a cylinder body hinge hole is formed in one end, far away from the upper flange, of the second support rod accommodating hole; the first supporting rod is located in the first supporting rod containing hole, one end of the first supporting rod is hinged to the barrel through the barrel hinge hole, the second supporting rod is located in the second supporting rod containing hole, and one end of the second supporting rod is hinged to the barrel through the barrel hinge hole.

When the pulling center pin, the center pin drives first actuating lever and second actuating lever simultaneous movement through first articulated ring body and the articulated ring body of second, the one end of keeping away from the center pin of first actuating lever and second actuating lever all is around the motion of keeping away from the center pin around the pin joint to promote first bracing piece and second bracing piece and all rotate around its pin joint with the shell, make first bracing piece and second bracing piece non-articulated one end all strut to the shell outside, thereby with the internal face butt in blasting big gun hole, realize plugging device's location and locking. When the plugging device slides inwards, the external support tendency of the first support rod is amplified, and the locking friction force is increased, so that the plugging device is prevented from sliding inwards; when the plugging device slides outwards, the outward supporting trend of the second supporting rod is amplified, the locking friction force is increased, the plugging device is prevented from sliding outwards, and the locking plugging device can slide up and down under the synergistic effect through the difference of the opening and closing directions of the first supporting rod and the second supporting rod.

The upper flange plate of the barrel shell is fixedly connected with an upper sealing cover through bolts, a threaded hole is formed in the center of the upper sealing cover, the threaded rod penetrates out of the threaded hole and forms threaded fit with the threaded hole, axial movement can be synchronously achieved when the threaded rod rotates along the threads, and the end of the threaded rod is fixedly connected with a hand wheel.

The invention has the advantages that:

1. the wear-resistant plates such as cowhide plates are coated on the outer side of the rubber soft body, so that the wear resistance of the elastic plugging component is enhanced, the diameter of the elastic plugging component can be enlarged through compression deformation, and the easy-to-place blast hole in a normal state and the sealing plugging of the blast hole in a working state of the plugging device are realized;

2. the locking of the synergistic effect is realized through the difference of the opening and closing directions of the outer supports of the first support rod and the second support rod, no matter the plugging device moves inwards or outwards, one group of support rods can always be in an expansion trend along with the movement, the locking friction force between the group of support rods and the inner wall surface of the blast hole is increased, and the plugging device can be effectively prevented from being impacted out of the blast hole by the blasting impact force;

3. the method is not only suitable for blast holes in the vertical direction, but also can be used for blast holes at various angles which are not easy to block by the traditional blocking methods such as inclined blocking, inverted blocking and the like, has wide application range, and can be repeatedly used.

Drawings

FIG. 1 is a schematic view of the overall structure of the occluding device of the present invention;

fig. 2 is a schematic view of an explosive structure of an elastic plugging member of the plugging device of the present invention;

FIG. 3 is a schematic cross-sectional view of the resilient occluding component of the occluding device of the present invention;

FIG. 4 is a schematic view of the internal drive shaft of the occluding device of the present invention;

FIG. 5 is a schematic view of the principle of the action of the driving rod inside the plugging device according to the present invention;

FIG. 6 is a schematic view of a cartridge housing configuration of the occluding device of the present invention;

FIG. 7 is a schematic view of the hand wheel drive portion of the occluding device of the present invention;

in the figure: 1. the barrel shell, 2, the center pin, 3, first bracing piece, 4, first actuating lever, 5, first articulated ring body, 6, the second bracing piece, 7, the second actuating lever, 8, the second articulated ring body, 9, first hinge hole, 10, the second hinge hole, 11, the baffle, 12, the slurcam, 13, the limiting plate, 14, go up the locking ring, 15, lower locking ring, 16, the rubber column body, 17, wear-resisting flexible piece, 18, last closing cap, 19, the threaded rod, 20, the hand wheel, 21, first bracing piece accommodation hole, 22, barrel hinge hole, 23, second bracing piece accommodation hole, 24, the upper flange dish.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the disclosure herein.

Referring to the drawings, the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the present disclosure, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present disclosure can be implemented, so that the present disclosure has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the disclosure of the present disclosure without affecting the efficacy and the achievable purpose of the present disclosure. Meanwhile, the positional limitation terms used in the present specification are for clarity of description only, and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship therebetween may be regarded as the scope of the present invention without substantial changes in the technical content.

As shown in fig. 1, the overall structure of the plugging device of the present invention is schematically shown, the blasting blasthole plugging device of the present invention comprises an upper supporting and positioning part and a lower elastic plugging part, and the supporting and positioning part and the elastic plugging part are separated by a partition 11; the upper supporting and positioning component main body is a cylinder shell 1, a plurality of supporting rods are hinged to the outer wall of the cylinder shell 1, and the supporting rods can rotate outwards around hinged points of the supporting rods and the cylinder shell under the pushing action of the driving rods, so that the other end portions of the supporting rods are supported in the direction far away from the outer wall surface of the cylinder shell 1.

Fig. 2 is a schematic view of an explosive structure of an elastic plugging part of the plugging device of the invention, and fig. 3 is a schematic cross-sectional view of the elastic plugging part of the plugging device of the invention; as shown in the figure, the elastic plugging component comprises a rubber cylinder 16, a pushing plate 12, a limiting plate 13, a central shaft 2, a wear-resistant flexible sheet 17, an upper locking ring 14 and a lower locking ring 15, the limiting plate 13 is a circular plate structure sleeved on the central shaft 2, the central shaft 2 can slide up and down relative to the limiting plate 13, the pushing plate 12 is mainly of a circular plate structure and fixedly connected with the bottommost end of the central shaft 2, the diameters of the limiting plate 13 and the pushing plate 12 are the same, and the peripheral surfaces of the limiting plate 13 and the pushing plate 12 are both provided with threads; the main body of the rubber cylinder 16 is a cylindrical rubber soft body which can deform under pressure, the rubber soft body is provided with a through hole along the central axis of the rubber soft body, and the rubber cylinder 16 is sleeved on the central shaft 2 and is positioned between the limiting plate 13 and the pushing plate 12 through the through hole; the wear-resistant flexible sheet 17 is an arc-shaped sheet formed by bending a rectangular sheet structure, the length of the arc-shaped sheet is the same as that of the rubber column 16, the width of which is one third or one fourth of the circumference of the cross section of the rubber cylinder 16, as shown in figure 3, the wear-resistant flexible sheets 17 are coated on the peripheral cylindrical surface of the rubber column 16 in a multilayer manner, every three or four (three in this embodiment) wear-resistant flexible sheets 17 are spliced into a cylindrical surface, a gap between two adjacent wear-resistant flexible sheets 17 of each cylindrical surface is positioned at the middle position of one wear-resistant flexible sheet 17 of the outer cylindrical surface, namely, gaps among the wear-resistant flexible sheets 17 on the inner cylindrical surface are covered by the wear-resistant flexible sheets 17 on the outer cylindrical surface, and the wear-resistant flexible sheets 17 on the outer surface of the rubber cylinder 16 are coated in a multi-layer manner, so that the diameter of the cross section circle of the cylinder formed by the rubber cylinder 16 and the wear-resistant flexible sheets 17 is approximately the same as the diameter of the circle of the pushing plate 12 and the limiting plate 13; go up lock ring 14 and lower lock ring 15 and be the ring structure that has the internal thread, the inner diameter of ring structure with the diameter of circle of slushing plate 12 and limiting plate 13 is the same, and the axial length of ring structure is greater than the thickness of slushing plate 12 and limiting plate 13, it is preferred, the axial length of going up lock ring 14 is greater than the thickness of twice limiting plate 13, the axial length of lower lock ring 15 is greater than the thickness of twice slushing plate 12, it twists soon through screw-thread fit to go up lock ring 14 the limiting plate 13 periphery and with the upper end of the cylinder that rubber cylinder 16 and wear-resisting flexible piece 17 constitute with limiting plate 13 locking together, it twists soon through screw-thread fit to go up lock ring 15 and twist through screw-thread fit and be in the slushing plate 12 periphery and with the lower extreme of the cylinder that rubber cylinder 16 and wear-resisting flexible piece 17 constitute with slushing plate 12 locking together. Specifically, the upper end and the lower end of the outer peripheral surface of the cylinder formed by the rubber cylinder 16 and the wear-resistant flexible sheet 17 are wound with multiple layers of raw material belts, and the upper locking ring 14 and the lower locking ring 15 are screwed on the raw material belts.

The central shaft 2 sequentially penetrates through a limiting plate 13 and a partition plate 11 and then extends into the cylinder shell 1, and a driving rod structure is formed in the cylinder shell 1, specifically, fig. 5 is a schematic view of an action principle of a driving rod in the plugging device of the invention, fig. 6 is a schematic view of a cylinder shell structure of the plugging device of the invention, and by combining fig. 5-6, the driving rod structure comprises a first hinged ring body 5 and a second hinged ring body 8 which are fixed on the central shaft 2, a plurality of first driving rods 4 hinged with the first hinged ring body 5 are distributed on the periphery of the first hinged ring body 5 in an array manner, and one end, far away from the first hinged ring body 5, of each first driving rod 4 is hinged on a rod body of the first supporting rod 3; a plurality of second driving rods 7 hinged with the second hinge ring body 8 are distributed on the periphery of the second hinge ring body 8 in an array mode, and one end, far away from the second hinge ring body 8, of each second driving rod 7 is hinged to a rod body of the second supporting rod 6; when the first driving rod 4 and the second driving rod 7 are far away from or tightly attached to the central shaft 2 around the hinge points of the first driving rod 4 and the second driving rod 7, the first driving rod 4 and the second driving rod 7 always keep parallel operation states, when the first driving rod 4 and the second driving rod 7 always keep parallel synchronous motion, in order to enable the first supporting rod 3 and the second supporting rod 6 to be supported outwards at the same height, the length between two hinge points on the second supporting rod 6 needs to be greater than the length between two hinge points on the first supporting rod 3, namely the distance between the hinge positions of the second driving rod 7 and the second supporting rod 6 and the length between the hinge positions of the second supporting rod 6 and the cartridge case 1 are greater than the distance between the hinge positions of the first driving rod 4 and the first supporting rod 3 and the hinge positions of the cartridge case 1. The upper end of the central shaft 2 is connected to the threaded rod 19 by means of bearings or ball joints, so that the rotary movement of the threaded rod 19 cannot be transmitted to the central shaft 2.

With reference to fig. 6, fig. 6 is a schematic view of a cartridge case structure of the plugging device of the present invention, a main body of the cartridge case 1 is a cylindrical structure, a partition 11 is fixedly disposed at a lower end of the main body, an upper flange 24 is fixedly disposed at an upper end of the main body, a plurality of first support rod receiving holes 21 extending along an axial direction of the cartridge case and penetrating through a wall surface of the cartridge case 1 and a plurality of second support rod receiving holes 23 extending along the axial direction of the cartridge case and penetrating through the wall surface of the cartridge case 1 are circumferentially distributed in an array manner on the cartridge case 1, the first support rod receiving holes 21 have a first axial length from the upper flange 24, the second support rod receiving holes 23 have a second axial length from the upper flange 24, and the second axial; a cylinder hinge hole 22 is formed in one end, close to the upper flange 24, of the first support rod accommodating hole 21, and a cylinder hinge hole is formed in one end, far away from the upper flange 24, of the second support rod accommodating hole 23; the first support rod 3 is located in the first support rod accommodating hole 21, one end of the first support rod is hinged to the cylinder 1 through the cylinder hinge hole 22, and the second support rod 6 is located in the second support rod accommodating hole 23, and one end of the second support rod is hinged to the cylinder 1 through the cylinder hinge hole 22. In this embodiment, the number of the first driving levers 4 and the number of the first support levers 3 are three, and the number of the second driving levers 7 and the number of the second support levers 6 are three.

When pulling center pin 2, center pin 2 drives first actuating lever 4 and second actuating lever 7 synchronous motion through first articulated ring body 5 and the articulated ring body 8 of second, the one end of keeping away from center pin 2 of first actuating lever 4 and second actuating lever 7 all is the motion of keeping away from center pin 2 around the pin joint to promote first bracing piece 3 and second bracing piece 6 and all rotate around its pin joint with shell 1, make first bracing piece 3 and second bracing piece 6 do not articulated one end all to shell 1 outside strut, thereby with the internal face butt in blasting big gun hole, realize plugging device's location and locking. When the plugging device slides inwards, the external support tendency of the first support rod 3 is amplified, and the locking friction force is increased, so that the plugging device is prevented from sliding inwards; when the plugging device slides outwards, the external support trend of the second support rod 6 is amplified, and the locking friction force is increased, so that the plugging device is prevented from sliding outwards, and the vertical sliding of the plugging device is locked under the synergistic effect realized through the difference of the opening and closing directions of the external supports of the first support rod 3 and the second support rod 6.

Fig. 7 is a schematic structural diagram of a hand wheel driving part of the plugging device, as shown in the figure, an upper sealing cover 18 is fixedly connected to an upper flange 24 of the cylinder housing 1 through bolts, a threaded hole is formed in the center of the upper sealing cover 18, the threaded rod 19 penetrates through the threaded hole and forms threaded fit with the threaded hole, so that the threaded rod 19 can synchronously realize axial movement when rotating along the threads, and the end part of the threaded rod 19 is fixedly connected with a hand wheel 20.

The course of action of the occlusion device according to the invention is explained below with reference to fig. 1 to 7 as follows: the plugging device is placed in a blast hole, a hand wheel 20 is screwed, a central shaft 2 is pulled outwards, the central shaft 2 drives a pushing plate 12 to compress a rubber cylinder 16, and the position of a limiting plate 13 at the other end of the rubber cylinder 16, which abuts against a partition plate 11, cannot be changed, so that the length of a cylinder formed by the pushing plate 12 compressing the rubber cylinder 16 and a wear-resistant flexible sheet 17 is shortened, the diameter of the cylinder becomes thicker, and the cylinder is abutted against the inner wall surface of the blast hole to realize sealing plugging; the in-process of outside pulling center pin 2 drives first articulated ring body 5 and the articulated ring body 8 motion of second simultaneously, and the synchronous motion of pulling first actuating lever 4 and second actuating lever 7 props up first bracing piece 3 and the outside of second bracing piece 6, thereby the tip of first bracing piece 3 and second bracing piece 6 and the position department of firmly fixing a position the plugging device and placing of big gun hole internal face butt.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the invention, and it should be understood by those skilled in the art that various modifications and changes in equivalent structure or equivalent flow, or direct or indirect application to other related fields without creative efforts based on the technical solutions of the present invention may be made within the scope of the present invention.

Claims

1. The blasting blasthole plugging device is characterized by comprising an upper supporting and positioning part and a lower elastic plugging part, wherein the supporting and positioning part and the elastic plugging part are separated by a partition plate; the upper supporting and positioning component main body is a cylinder shell, a plurality of supporting rods are hinged to the outer wall of the cylinder shell, and the supporting rods can rotate outwards around hinged points of the supporting rods and the cylinder shell under the pushing action of the driving rods, so that the other end portions of the supporting rods are supported in the direction far away from the outer wall surface of the cylinder shell.

2. The occlusion device of claim 1, further characterized in that the elastic occlusion component comprises a rubber cylinder, a pushing plate, a limiting plate, a central shaft, a wear-resistant flexible sheet, an upper locking ring and a lower locking ring, wherein the limiting plate is a circular plate structure sleeved on the central shaft and abutted against the partition plate; the central shaft can slide up and down relative to the limiting plate, the main body of the push plate is of a circular plate structure and is fixedly connected with the bottommost end of the central shaft, the limiting plate and the push plate are the same in diameter, and the outer peripheral surfaces of the limiting plate and the push plate are provided with threads; the rubber cylinder body is a cylindrical rubber soft body which can deform under pressure, the rubber soft body is provided with a through hole along the central axis of the rubber soft body, and the rubber cylinder body is sleeved on the central shaft and is positioned between the limiting plate and the pushing plate through the through hole; the wear-resistant flexible sheets are arc-shaped sheets formed by bending rectangular sheet structures, the length of the arc-shaped sheets is the same as that of the rubber cylinder, the width of the arc-shaped sheets is one third or one fourth of the circumference of the cross section of the rubber cylinder, the wear-resistant flexible sheets are coated on the peripheral cylindrical surface of the rubber cylinder in a multilayer manner, every three or four wear-resistant flexible sheets are spliced into a cylindrical surface, gaps among the wear-resistant flexible sheets on the inner cylindrical surface are covered by the wear-resistant flexible sheets on the outer cylindrical surface of the rubber cylinder, and the wear-resistant flexible sheets coated on the outer surface of the rubber cylinder in the multilayer manner enable the diameter of the cross section circle of the cylinder formed by the rubber cylinder and the wear-resistant flexible sheets to be approximately; go up the lock ring and lock ring down and be the ring structure that has the internal thread, the internal diameter of ring structure with the circle diameter of slurcam and limiting plate is the same, and the axial length of ring structure is greater than slurcam and limiting plate thickness, go up the lock ring and twist soon through screw-thread fit limiting plate periphery and with the upper end of the cylinder that rubber cylinder and wear-resisting flexible sheet constitute with the limiting plate locking together, down the lock ring twist soon through screw-thread fit the slurcam periphery and with the lower extreme of the cylinder that rubber cylinder and wear-resisting flexible sheet constitute with the slurcam locking is in the same place.

3. The occlusion device of claim 2, further characterized in that the rubber cylinder and the wear-resistant flexible sheet are wrapped around the outer circumference of the cylinder at upper and lower ends thereof with a plurality of layers of green tape, and the upper and lower locking rings each have a portion screwed onto the green tape.

4. The occlusion device of claim 2, further characterized in that the upper locking ring has an axial length greater than twice a thickness of the stopper plate and the lower locking ring has an axial length greater than twice a thickness of the pusher plate.

5. The plugging device according to claim 1 or 2, wherein the central shaft sequentially passes through the limiting plate and the partition plate and then extends into the cylinder shell, and a driving rod structure is formed in the cylinder shell and comprises a first hinged ring body and a second hinged ring body which are fixed on the central shaft, a plurality of first driving rods hinged with the first hinged ring body are distributed on the periphery of the first hinged ring body in an array manner, and one end, far away from the first hinged ring body, of each first driving rod is hinged to a rod body of the first supporting rod; a plurality of second driving rods hinged with the second hinged ring bodies are distributed on the periphery of the second hinged ring bodies in an array mode, and one end, far away from the second hinged ring bodies, of each second driving rod is hinged to a rod body of the second supporting rod;

6. The occlusion device of claim 5, further characterized in that the upper end of the central shaft is coupled to the threaded rod by a bearing or ball joint such that rotational movement of the threaded rod is not transmitted to the central shaft.

7. The occlusion device of claim 5, further characterized in that the first and second actuation levers maintain a parallel operating condition when moving away from or against the central axis about their hinge points.

8. The plugging device of claim 6, wherein an upper sealing cover is fixedly connected to the upper flange of the cartridge shell through a bolt, a threaded hole is formed in the center of the upper sealing cover, the threaded rod penetrates through the threaded hole and forms threaded fit with the threaded hole, axial movement of the threaded rod can be synchronously achieved when the threaded rod rotates along the threads, and a hand wheel is fixedly connected to the end of the threaded rod.

9. A method for plugging a blast hole of a blasting machine, which uses the plugging device according to claim 8, comprising: the plugging device is placed in a blast hole, a hand wheel is screwed, a central shaft is pulled outwards, the central shaft drives a pushing plate to compress a rubber cylinder, and the position of a limiting plate at the other end of the rubber cylinder is abutted against a partition plate and cannot be changed, so that the length of a cylinder formed by the pushing plate compressing the rubber cylinder and a wear-resistant flexible sheet is shortened, the diameter of the cylinder is thickened, and the cylinder is abutted against the inner wall surface of the blast hole to realize sealing plugging; the in-process of outside pulling center pin drives first articulated ring body and the articulated ring body motion of second simultaneously, and the first actuating lever of pulling and the synchronous motion of second actuating lever prop up first bracing piece and second bracing piece outwards, thereby the tip of first bracing piece and second bracing piece and blast hole internal face butt firmly fix a position the plugging device in the position department of placing.