CN212673969U

CN212673969U - Limiting device

Info

Publication number: CN212673969U
Application number: CN202021025193.3U
Authority: CN
Inventors: 刘雪冬
Original assignee: Beijing Zhongda Blasting Engineering Co ltd
Current assignee: Beijing Zhongda Blasting Engineering Co ltd
Priority date: 2020-06-05
Filing date: 2020-06-05
Publication date: 2021-03-09
Anticipated expiration: 2030-06-05

Abstract

The embodiment of the utility model discloses stop device relates to blasting engineering technical field, can solve the fixed and coal face forced top-off cartridge fixed problem of tunnel tunnelling gushing water big gun hole cartridge. The limiting device comprises at least two supporting arms, each supporting arm comprises a first arm body and a second arm body, the first end of the first arm body is connected with the first end of the second arm body, and the first arm body and the second arm body can rotate oppositely; the second ends of the first arm bodies of the support arms are connected with each other, and the second ends of the second arm bodies are also connected with each other. The utility model discloses mainly used carries on spacingly to cartridge or cartridge case.

Description

Limiting device

Technical Field

The utility model relates to a blasting engineering technical field especially relates to a stop device.

Background

In the tunneling process of tunnels and underground mine roadways, the situations of water outflow from a working face, water gushing from drilled holes drilled in tunneling and the like are often encountered, and at the moment, when the water inflow in blast holes is large, explosives pushed to the bottom of the holes by the blast rods are withdrawn along with the blast rods and flushed out of the holes by water flow, so that continuous charging cannot be carried out; the tunnel bottom hole explosive can float on the water surface and does not sink into the water bottom, so that the blasting generates a root bottom, and the strip-shaped emulsion explosive floats in the water, so that the spacing between the explosives is too large, and the problem of explosion rejection is caused; similarly, when the coal mine is forced to be set on top, the punched top plate is inclined to drill upwards, and the explosive cartridge slides downwards under the influence of gravity, so that the utilization rate of blast holes and the setting effect are influenced.

SUMMERY OF THE UTILITY MODEL

In view of this, the embodiment of the utility model provides a stop device can solve fixed and the coal face of tunnel tunnelling gushing water big gun hole cartridge and force the fixed problem of top-off cartridge.

The embodiment of the utility model provides a limiting device, including at least two support arms, the support arm includes first arm body and second arm body, the first end of first arm body with the first end of second arm body links to each other, and can rotate in opposite directions between the first arm body and the second arm body; the second ends of the first arm bodies of the support arms are connected with each other, and the second ends of the second arm bodies are also connected with each other.

Optionally, the limiting device further comprises a limiting rod and a buckle head, wherein the buckle head is sleeved on the limiting rod and can move unidirectionally along the limiting rod; the second end of the first arm body of each supporting arm is connected with the buckle head, and the second end of the second arm body is connected with the limiting rod.

Optionally, protrusions arranged at intervals are arranged in the length direction of the limiting rod; the buckle head is conical, a conical through hole coaxial with the buckle head is formed in the buckle head, an opening in the length direction of the buckle head is formed in the end, with the smaller diameter, of the buckle head, and the buckle head is sleeved on the limiting rod through the through hole.

Optionally, the end with the larger diameter of the buckle head faces the first end of the limiting rod, the second end of the second arm body is connected with the first end of the limiting rod, and the second end of the first arm body is connected with the end with the larger diameter of the buckle head; the larger one end of discount diameter still is provided with the perpendicular to the atress board of discount.

Optionally, the number of the support arms is two, and the two support arms are arranged oppositely; or the number of the supporting arms is more than two, and the supporting arms are uniformly arranged on the circumferential direction of the limiting rod.

Optionally, a friction strip located outside the limiting device is arranged at the joint of the first arm body and the second arm body.

Optionally, the friction strip is arc-shaped, the opening of the arc-shaped friction strip faces the limiting device, and the friction strip deviates from one side of the limiting device by adopting a frosting process.

Optionally, the limiting device further comprises a conical buffer head, and one end of the buffer head with the larger diameter is connected with one end of the limiting rod close to the second arm body.

Optionally, the buffer head is detachably connected with the limiting rod.

Optionally, the first end of the first arm is hinged to the first end of the second arm.

The embodiment of the utility model provides a stop device, including at least two support arms, the support arm includes first arm body and second arm body, the first end of first arm body with the first end of second arm body links to each other, and can rotate in opposite directions between the first arm body and the second arm body; the second ends of the first arm bodies of the support arms are connected with each other, and the second ends of the second arm bodies are also connected with each other. Like this, because each can rotate in opposite directions between the first arm body and the second arm body of support arm, and can keep the locking state after rotating in opposite directions, consequently, by a plurality of stop device's that the support arm is constituteed maximum width also can be by little grow, like this, works as stop device is used for the cartridge in the big gun hole fixed time, can at first with stop device and cartridge push the hole bottom of big gun hole, then extrude hard in the big gun hole stop device makes two arm bodies of each support arm rotate in opposite directions, until the reliable butt of junction of first arm body and second arm body is established on the lateral wall of big gun hole, can realize the fixed of cartridge in the big gun hole.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic view of a connection relationship between a support arm and a buckle provided in an embodiment of the present invention;

fig. 2 is a schematic view of a limiting rod according to an embodiment of the present invention;

fig. 3 is a schematic view of one of the position-limiting devices according to the embodiment of the present invention;

FIG. 4 is a schematic view of another state of the spacing device of FIG. 3;

fig. 5 is a schematic view of another limiting device according to an embodiment of the present invention;

fig. 6 is a specific usage scenario of the limiting device according to an embodiment of the present invention.

Detailed Description

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

The embodiment of the utility model provides a stop device can solve fixed and coal face of tunnel tunnelling gushing water big gun hole cartridge and force the fixed problem of top-off cartridge.

As shown in fig. 1, an embodiment of the present invention provides a limiting device, which includes at least two supporting arms 1, where each supporting arm 1 includes a first arm 11 and a second arm 12, a first end of the first arm 11 is connected to a first end of the second arm 12, and the first arm 11 and the second arm 12 can rotate in opposite directions; the second ends of the first arm bodies 11 and the second ends of the second arm bodies 12 of the support arms 1 are connected to each other.

In this embodiment, the first arm and the second arm are rotatable in opposite directions, which means that the first arm and the second arm are rotatable in opposite directions, for example: the first arm body and the second arm body are connected in a flexible connection mode or hinged mode, and the two arm bodies rotate in the opposite direction by taking the connection point of the first end of the first arm body and the first end of the second arm body as the center. Alternatively, the first arm and the second arm may rotate in opposite directions, and specifically, after the first arm (or the second arm) rotates in a direction approaching the second arm (or the first arm), the first arm (or the second arm) cannot rotate.

Because the first arm body and the second arm body of each support arm can rotate in opposite directions, the maximum width of the limiting device consisting of a plurality of support arms can be increased from small to large, so that when the limiting device is used for fixing the cartridges in the blasthole, the limiting device and the cartridges can be pushed into the hole bottom of the blasthole (the cartridges are positioned on one side of the limiting device close to the hole bottom of the blasthole), then the limiting device is forcibly extruded into the blasthole, the two arm bodies of each support arm rotate in opposite directions until the joint of the first arm body and the second arm body reliably abuts against the side wall of the blasthole, and therefore the limiting device can be fixedly connected to the inner wall of the blasthole by virtue of friction force, and the cartridges can be fixed in the blasthole.

As shown in fig. 2, as an optional implementation manner of the above embodiment, the limiting device may further include a limiting rod 2 and a buckle 3, where the buckle 3 is sleeved on the limiting rod 2 and can move along the limiting rod 2 in a single direction; the second end of the first arm body 11 of each support arm 1 is connected with the buckle head 3, and the second end of the second arm body 12 is connected with the limiting rod 2.

In this embodiment, the second ends of the first arm bodies of the support arms are connected with each other through the fastening heads, and the second ends of the second arm bodies are connected with each other through the limiting rods; because the fastening head can move in one direction along the limiting rod and has a locking function after moving in one direction, the supporting arms can be fixed in an extending state after rotating in opposite directions by means of the connection relationship between the fastening head and the limiting rod.

Specifically, when the buckle head can move along the first end of the limiting rod in a single direction, the second end of the first arm body of each supporting arm can be connected with the buckle head, and the second end of the second arm body is connected with the first end of the limiting rod; when the buckle head can move along the second end of the limiting rod in a single direction, the second end of the first arm body of each supporting arm can be connected with the buckle head, and the second end of the second arm body is connected with the second end of the limiting rod.

In the process of pushing the limiting device in the embodiment into the bottom of the blast hole, the limiting rod is firstly required to be connected with the buckle head, one end of the limiting rod is towards the outside of the blast hole, one end of the limiting rod is connected with the second arm body and is towards the inside of the blast hole, and the limiting device is ensured to move along the axis direction of the blast hole, so that after the limiting device is pushed into the bottom of the blast hole, the hollow blast rod or one end of the limiting rod is used for providing the blast rod for avoiding the hole to extrude the buckle head (the hollow blast rod or the blast rod for providing the avoiding hole is used for avoiding the limiting rod), and the opposite rotation between the first supporting arm and the second supporting arm can be realized.

In the above embodiment, in order to ensure that the limiting device moves along the axis of the blast hole without rotating radially, the length of the limiting device and the diameter of the blast hole may have a certain length-width ratio, for example, the ratio between the length of the limiting device and the diameter of the blast hole is greater than 1.

As shown in fig. 2 and 3, optionally, in the above embodiment, the limiting rod 2 is provided with protrusions 21 arranged at intervals in the length direction; the discount 3 is the toper, just be equipped with in the discount 3 with the coaxial toper through-hole of discount 3, the less one end of discount 3 diameter is provided with the edge the opening 31 of 3 length direction of discount, discount 3 passes through the through-hole cover is established on the gag lever post 2.

In this embodiment, the connection structure and the working principle between the buckle head and the limiting rod are similar to those of a hand-threading needle; specifically, the larger end of the conical through hole has the same direction as the larger end of the buckle head, the maximum diameter of the conical through hole is larger than or equal to the diameter of the limiting rod bulge, and the minimum diameter of the conical through hole is smaller than the diameter of the limiting rod bulge; therefore, the end with the larger opening of the buckle head can be smoothly sleeved on the limiting rod, and when the buckle head moves along the limiting rod towards the end with the larger opening, the end with the smaller diameter of the buckle head is provided with the opening, so that under the extrusion action of the bulge, the material at the opening of the buckle head is elastically deformed and is outwards expanded to enlarge the diameter of the through hole, so that the bulge can smoothly pass through the through hole; and then, the material at the opening of the buckle head is restored to the original state to prevent the buckle head from moving reversely, so that the one-way movement of the buckle head along the limiting rod is realized.

In the above embodiment, the protrusion on the limiting rod may be a conical protrusion or a spherical protrusion coaxial with the limiting rod, as shown in fig. 2 and 3, when the protrusion 21 is conical, the smaller diameter end of each conical protrusion 21 is oriented in the same direction, and the direction is opposite to the direction in which the button head 3 moves along the limiting rod 2, so that the conical protrusion 21 can guide the movement of the button head 3.

As shown in fig. 5, alternatively, in the above embodiment, the larger diameter end of the button head 3 faces the first end of the stop lever 2, the second end of the second arm 12 is connected to the first end of the stop lever 2, and the second end of the first arm 11 is connected to the larger diameter end of the button head 3; the larger one end of discount 3 diameter still is provided with the perpendicular to the atress board 6 of discount 3.

This embodiment the atress structure of a facade is increased to the great one end of discount diameter, like this, utilize hollow barrel or one end to offer the barrel of dodging the hole and extrude bottom the barrel during the discount, the horizontal force of barrel acts on the atress board, compare in direct acting on the force on the toper discount (discount atress decomposes and still can increase a pressure to the gag lever post laminating), messenger's discount that can be better moves along the slide, makes the support arm extend.

Optionally, as shown in fig. 3 and 4, in any of the above embodiments, the number of the support arms is two, and the two support arms are arranged oppositely; or the number of the supporting arms is more than two, and the supporting arms are uniformly arranged on the circumferential direction of the limiting rod. In this embodiment, each of the support arms of the limiting device is symmetrically arranged, so that the limiting device is stressed uniformly when being clamped on the inner wall of the blast hole, and the limiting device is ensured to be reliably fixed.

As shown in fig. 1, 3 and 4, optionally, in any of the above embodiments, a friction strip 4 located outside the limiting device is disposed at the joint of the first arm 11 and the second arm 12.

In this embodiment, because stop device utilizes first arm body with the junction of second arm body supports and establishes at the big gun hole inner wall, consequently, the junction sets up the friction strip is favorable to increasing frictional force between junction and the big gun hole inner wall, thereby makes be connected between stop device and the big gun hole inner wall more firmly.

This embodiment stop device during operation, curved friction strip and the inner wall of big gun hole are laminated more, the outside of friction strip adopts dull polish technology, can further increase and the big gun hole inner wall between the friction to make the frictional connection between stop device and the big gun hole inner wall more reliable.

As shown in fig. 3 and 4, optionally, in the above embodiment, the limiting device may further include a tapered buffer head 5, and the larger diameter end of the buffer head 5 is connected to the end of the limiting rod 2 close to the second arm 12.

This embodiment, because stop device during operation, the gag lever post is close to the one end of second arm body is towards the big gun hole bottom, and consequently, this kind of front end cone structure can reduce rivers in gushing the great big gun hole of water and to the impact of cartridge stop device, better fixed cartridge.

Optionally, in the above embodiment, the buffer head is detachably connected to the limiting rod. For example, the buffer head and the limiting rod are connected through threads or through a buckle.

Optionally, in any of the above embodiments, the first end of the first arm and the first end of the second arm may be hinged to each other, so that the first arm and the second arm may rotate relative to each other by virtue of the hinged relationship; of course, the first end of the first arm and the first end of the second arm may also be fixedly connected, and at this time, the first arm and the second arm need to be made of an elastic material, so that when the second end of the first arm and the second end of the second arm are acted by force, the first arm and the second arm elastically deform and can also rotate in opposite directions.

In order to facilitate understanding of the utility model, a specific tunnel driving water burst blast hole cartridge fixing and coal face forced top-caving cartridge fixing method is given as follows, as shown in fig. 6, required equipment includes: a limiting device 10, a hollow round gun rod 20 and a cartridge 30 for loading the cartridge.

The method comprises the following steps:

(1) measuring the depth of a blast hole by using a gun rod, selecting a explosive barrel, and putting an emulsion explosive cartridge, a detonator and a detonating cord into the explosive barrel;

in this step, the medicine barrel may be a cylindrical barrel with one closed end and one open end, the closed end having a conical top; when the explosive cartridge is installed in the water burst blast hole, the circular cone-shaped top can reduce the water flow resistance and is convenient to install, and the two small ventilation holes are formed in the circular cone-shaped top, so that air in the barrel can be conveniently discharged when the explosive cartridge is filled in the barrel. The opening end of the explosive barrel is provided with a buckle or a thread which can prolong the explosive barrel, and the inner wall of the explosive barrel is provided with a groove for laying a detonator leg wire and a detonating cord. The inner diameter of the explosive barrel is well matched with the explosive cartridge.

(2) Putting the explosive barrel into a blast hole orifice, and then putting the explosive barrel into a limiting device;

in the step, the limiting device is placed next to the explosive barrel, and the length of the limiting device and the diameter of the blast hole have a certain length-width ratio, so that the limiting device can only move along the axis of the hole wall. The support range of the foldable support arm is matched with the diameter of a blast hole, and the diameter of the blast hole is smaller than the maximum support diameter of the blast hole. Under the special condition, the length of the limiting rod can be increased, and one or more groups of foldable supporting arms are added along the length direction of the limiting rod. The supporting arm and the stress plate have certain strength as stress parts, so that the hollow round gun rod can be conveniently pushed forwards. The friction strip is an arc strip with the length of 2-3cm, the arc strip is tightly attached to the inner wall of the blast hole during working, and a frosted process or other materials for increasing the friction coefficient are adopted.

(3) A gun rod is used for slowly and uniformly pushing the limiting device and the explosive barrel to reach the bottom of the hole;

(4) and (4) rapidly pushing the limiting device with the gun rod, so that the foldable supporting arm supports the inner wall of the gun hole and fixes the explosive barrel.

(5) Slowly withdrawing the gun rod, and finishing charging after confirming that the explosive barrel is fixed.

Therefore, the embodiment of the utility model provides a stop device field operation is simple and convenient, simple and easy to use.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. The term "comprising", without further limitation, means that the element so defined is not excluded from the group consisting of additional identical elements in the process, method, article, or apparatus that comprises the element.

All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A limiting device is characterized by comprising at least two supporting arms, wherein each supporting arm comprises a first arm body and a second arm body, the first end of the first arm body is connected with the first end of the second arm body, and the first arm body and the second arm body can rotate oppositely;

the second ends of the first arm bodies of the support arms are connected with each other, and the second ends of the second arm bodies are also connected with each other.

2. The limiting device according to claim 1, further comprising a limiting rod and a buckle head, wherein the buckle head is sleeved on the limiting rod and can move unidirectionally along the limiting rod;

the second end of the first arm body of each supporting arm is connected with the buckle head, and the second end of the second arm body is connected with the limiting rod.

3. The limiting device according to claim 2, wherein the limiting rod is provided with protrusions arranged at intervals in the length direction;

the buckle head is conical, a conical through hole coaxial with the buckle head is formed in the buckle head, an opening in the length direction of the buckle head is formed in the end, with the smaller diameter, of the buckle head, and the buckle head is sleeved on the limiting rod through the through hole.

4. The stop device according to claim 3, wherein the larger diameter end of the button head faces the first end of the stop rod, the second end of the second arm is connected to the first end of the stop rod, and the second end of the first arm is connected to the larger diameter end of the button head;

the larger one end of discount diameter still is provided with the perpendicular to the atress board of discount.

5. The limiting device according to any one of claims 2 to 4 wherein the number of the supporting arms is two, and the two supporting arms are arranged oppositely; or

The number of the supporting arms is more than two, and the supporting arms are uniformly arranged on the circumferential direction of the limiting rod.

6. A spacing device according to any of claims 1 to 4, wherein a rub strip is provided at the junction of the first and second arms, outside the spacing device.

7. The limiting device according to claim 6, wherein the rubbing strip is arc-shaped, an opening of the arc-shaped rubbing strip faces the limiting device, and a frosted process is adopted on one side of the rubbing strip, which faces away from the limiting device.

8. The stop device according to claim 2, further comprising a tapered bumper head, wherein the larger diameter end of the bumper head is connected to the end of the stop bar adjacent to the second arm.

9. The spacing device of claim 8, wherein said bumper head is removably connected to said spacing rod.

10. The spacing device of claim 1, wherein said first end of said first arm is hingedly connected to said first end of said second arm.