Pre-splitting blasting charge auxiliary device

Abstract

The utility model relates to the technical field of blasting auxiliary devices, and discloses a pre-splitting blasting charging auxiliary device which comprises a first protective barrel, a second protective barrel and a limiting screw, and the surface of the first protective barrel and the surface of the second protective barrel are both connected with a plurality of clamping assemblies in a sliding mode. And an outer protective sleeve plate is arranged between the two opposite clamping assemblies in a sleeving manner. After the four outer protective sleeve plates, the first protective barrel, the second protective barrel, the four clamping assemblies arranged on the first protective barrel, the four clamping assemblies arranged on the second protective barrel and the eight limiting screws are comprehensively assembled, the multifunctional auxiliary device for charging can be formed; in the follow-up explosive cartridge installation process, enough space can be flexibly adjusted, the sleeving requirement is met, the four outer protection sleeve plates can be used for carrying out surrounding adjustment protection on the explosive cartridge, and the follow-up high-safety sleeving operation with a blast hole is met.

Description

Technical Field

[0001] The utility model relates to the technical field of blasting auxiliary devices, in particular to a pre-splitting blasting charge auxiliary device. Background Art

[0002] At present, when explosives explode in a blasthole, they generate powerful shock waves and high-pressure gases that violently impact the rock mass around the blasthole wall, causing the surrounding rock mass to break and crack. When excavation and blasting are carried out within a limited contour range, such as in open-pit mines, building foundation pits, road cuttings and trench excavation, tunneling and underground building excavation, on the one hand, it is required that the boundary of the blasting excavation should be as consistent as possible with the designed contour line to avoid over-excavation and under-excavation; on the other hand, it is required that the rock mass on the excavation boundary can be kept as intact and stable as possible.

[0003] To meet the above requirements, pre-splitting blasting between main blasting is one of the necessary auxiliary operations. Its main principle is to blast a through crack of a certain width along the designed contour line before blasting the main blasting area, so as to buffer and reflect the vibration wave of the excavation blasting, control its destructive impact on the retained rock mass, and obtain a relatively smooth excavation contour. With the further development of relevant technologies, some auxiliary devices for pre-splitting blasting charging are disclosed in the prior art. For example, the patent document with application number CN201710601694.8 discloses a cylindrical structure for protecting the explosive cartridge set. However, according to the technical solution disclosed in the above-mentioned prior art specification, the installation of the explosive cartridge requires the separation of part of its own cylindrical structure before it can be set with the explosive cartridge. The explosive cartridge needs to be reassembled after installation, which is troublesome and time-consuming. Secondly, during the sliding process of the blasthole, the long-term friction between the cylindrical structure and the inner wall of the blasthole may also increase the safety factor of the explosive cartridge. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention provides a pre-splitting blasting charge auxiliary device, which solves the problems raised by the above-mentioned background technology.

[0005] The utility model provides the following technical solutions: a pre-splitting blasting charging auxiliary device, comprising a first protective cylinder, a second protective cylinder, and a limit screw, wherein the surface of the first protective cylinder and the surface of the second protective cylinder are both slidably connected to a plurality of clamping assemblies, and an outer protective sleeve is set between the two opposite clamping assemblies, the top of the first protective cylinder is fixedly connected to a hanging structure, the middle parts of the plurality of clamping assemblies on the surface of the first protective cylinder and the middle parts of the plurality of clamping assemblies on the surface of the second protective cylinder are both provided with through holes penetrating the structures thereof, and the surfaces of the first protective cylinder and the second protective cylinder are both provided with threaded holes;

[0006] The limit screw can pass through a through hole in the middle of a clamping component and be threadedly connected to the inside of a corresponding threaded hole. During the process of threaded connection with the threaded hole, the limit screw applies pressure to the clamping component and the outer protective sleeve, so that the internal movable structure of the clamping component squeezes and limits the outer protective sleeve.

[0007] The lifting structure is composed of a limiting ring fixedly connected to the top surface of the support frame and the support frame. The limiting rings are set in no less than two numbers and are evenly distributed along the circumference of the first protective cylinder to facilitate the subsequent lifting and installation of related equipment. The bottom of the support frame is fixedly connected to the top surface of the first protective cylinder.

[0008] Preferably, the specific number of the clamping components is eight and they are respectively installed on the surface of the first protective cylinder and the surface of the second protective cylinder in an evenly distributed manner, and the specific number of the outer protective sleeve and the threaded holes are both four.

[0009] Selected, the eight clamping components all include a semi-open sleeve and a movable pressure plate, and a folded spring sheet is installed between the side of the semi-open sleeve and the corresponding side of the movable pressure plate. The through hole passes through the middle of the movable pressure plate and the middle of the semi-open sleeve to provide a makeshift space for the subsequent matching structure.

[0010] Preferably, the surface of the first protective cylinder body and the surface of the second protective cylinder body are fixedly sleeved with annular slide rails, and the two annular slide rails can be respectively clamped with the semi-open sleeve plate set on the surface of the first protective cylinder body and the semi-open sleeve plate set on the surface of the second protective cylinder body, thereby improving the stability and reliability of the sliding of the clamping assembly on the first protective cylinder body or the second protective cylinder body.

[0011] The four outer protective cover plates are each provided with a clearance groove in the middle, and the inner sides of the top and bottom of the clearance groove are each provided with a guide assembly, which can be reciprocated with the clearance groove for storage or expansion, thereby being suitable for blast holes of different specifications and meeting different usage requirements.

[0012] The selected guide assembly includes a movable rod, one end of which is movably connected to the inner wall of the corresponding give way groove through a bearing, a torsion spring is installed between the surface of one end of the movable rod and the inner wall of the corresponding give way groove, and the torsion spring causes the movable rod to be sleeved in the corresponding give way groove in an inclined state when it is not under pressure, an assembly groove is opened in the other end head of the movable rod, a support shaft is fixedly connected in the assembly groove, and a roller is clamped on the outside of the support shaft, and multiple guide assemblies can form a transition support between the outer protective sleeve and the inner wall of the blast hole, so that the explosive roll is always located in the middle position of the blast hole during the moving installation process.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The utility model can form a multifunctional auxiliary device for charging by assembling four outer protective sleeves, a first protective cylinder, a second protective cylinder, four clamping components provided on the first protective cylinder, four clamping components provided on the second protective cylinder and eight limit screws. In the subsequent installation process of the explosive roll, it can flexibly adjust sufficient space to meet the needs of the package. The four outer protective sleeves can also be used to perform surrounding adjustment and protection on the explosive roll, meeting the subsequent high-safety package operation with the blast hole, while simplifying the pre-splitting blasting operation process, expediting the operation, and improving the operation efficiency.

[0015] 2. The utility model can form a transition support between the outer protective sleeve and the inner wall of the blast hole by combining the multiple guide components and the multifunctional auxiliary device, so that the explosive cartridge is always located in the middle position of the blast hole during the assembly process of the blast hole, avoiding the adverse effects of friction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a front view schematic diagram of the structure of the utility model;

[0018] Figure 3 This is an enlarged schematic diagram of the first protective cylinder of the utility model structure;

[0019] Figure 4 This is an enlarged schematic diagram of the second protective cylinder of the utility model structure;

[0020] Figure 5 It is an enlarged schematic diagram of the structural clamping assembly of the utility model;

[0021] Figure 6 This is an enlarged schematic diagram of the guide assembly of the structure of the utility model;

[0022] Figure 7 For the utility model structure Figure 6 Enlarged schematic diagram of point A in the middle.

[0023] In the figure: 1. First protective cylinder; 2. Second protective cylinder; 3. Outer protective sleeve; 4. Clamping assembly; 41. Semi-open sleeve; 42. Movable pressure plate; 43. Folding spring sheet; 5. Threaded hole; 6. Lifting structure; 7. Gap groove; 8. Guide assembly; 81. Movable rod; 82. Roller; 83. Torsion spring; 9. Annular slide rail; 10. Limit screw. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1-7 , a pre-splitting blasting charging auxiliary device, comprising a first protective cylinder 1, a second protective cylinder 2, and a limit screw 10. The surface of the first protective cylinder 1 and the surface of the second protective cylinder 2 are both slidably connected with a plurality of clamping components 4, and an outer protective sleeve 3 is set between the two opposite clamping components 4. The top of the first protective cylinder 1 is fixedly connected with a lifting structure 6, and the lifting structure 6 is composed of a support frame and a limiting ring fixedly connected to the top surface of the support frame. The number of limiting rings is not less than two and is equidistantly distributed along the circumference of the first protective cylinder 1, so as to facilitate the subsequent lifting and installation of related equipment. The bottom of the support frame is fixedly connected to the top surface of the first protective cylinder 1;

[0026] Through holes penetrating the structures are provided in the middle of several clamping assemblies 4 on the surface of the first protective cylinder 1 and in the middle of several clamping assemblies 4 on the surface of the second protective cylinder 2. Threaded holes 5 are provided on the surface of the first protective cylinder 1 and the surface of the second protective cylinder 2. A limit screw 10 can penetrate the middle through hole of a clamping assembly 4 and be threadedly connected to the inside of the corresponding threaded hole 5. The limit screw 10 applies pressure to the clamping assembly 4 and the outer protective sleeve 3 during the process of threaded connection with the threaded hole 5, so that the internal movable structure of the clamping assembly 4 squeezes and limits the outer protective sleeve 3.

[0027] The specific number of clamping components 4 is eight and they are respectively installed on the surface of the first protective cylinder 1 and the surface of the second protective cylinder 2 in an evenly distributed manner. The specific number of outer protective sleeves 3 and threaded holes 5 is four. The eight clamping components 4 include a semi-open sleeve 41 and a movable pressure plate 42. A folded spring sheet 43 is installed between the side of the semi-open sleeve 41 and the side corresponding to the movable pressure plate 42. A through hole passes through the middle of the movable pressure plate 42 and the middle of the semi-open sleeve 41 to provide a clearance space for the subsequent matching structure. The surface of the first protective cylinder 1 and the surface of the second protective cylinder 2 are fixedly sleeved with an annular slide rail 9, and the two annular slide rails 9 can be respectively engaged with the semi-open sleeve 41 set on the surface of the first protective cylinder 1 and the semi-open sleeve 41 set on the surface of the second protective cylinder 2, thereby improving the stability and reliability of the sliding of the clamping component 4 on the first protective cylinder 1 or the second protective cylinder 2;

[0028] The middle part of the four outer protective sleeves 3 is provided with a clearance groove 7, and the inner side of the top and bottom of the clearance groove 7 is provided with a guide assembly 8. The guide assembly 8 can be reciprocated with the clearance groove 7 to be stored or expanded, thereby being suitable for blast holes of different specifications and meeting different usage requirements. The guide assembly 8 includes a movable rod 81, one end of the movable rod 81 is movably connected to the inner wall of the corresponding clearance groove 7 through a bearing, a torsion spring 83 is installed between the surface of one end of the movable rod 81 and the inner wall of the corresponding clearance groove 7, and the torsion spring 83 causes the movable rod 81 to be set in the corresponding clearance groove 7 in an inclined state in the non-pressure state, and an assembly groove is provided in the other end head of the movable rod 81, a support shaft is fixedly connected in the assembly groove, and a roller 82 is clamped on the outside of the support shaft. Multiple guide assemblies 8 can form a transition support between the outer protective sleeve 3 and the inner wall of the blast hole, so that the explosive roll is always located in the middle position of the blast hole during the moving installation process.

[0029] Working principle:

[0030] Example 1

[0031] After the first and second protective cylinder bodies 1 are locked, the four outer protective plates 3 are pushed away, and the four outer protective plates 3 are brought together under the combined support of the first and second protective cylinder bodies 1, 2, so as to make room for sufficient installation space. Then, the two ends of the explosive cartridge are respectively inserted into the interior of the first and second protective cylinder bodies 1. After completion, the four outer protective plates 3 are reset and moved, so that the four outer protective plates 3 are reset at equal distances along the circumference of the first protective cylinder body 1. Then, the eight limit screws 10 are reset and locked. In the detailed process, one end of a limit screw 10 passes through a through hole in the middle of a clamping component 4 and is then threaded into the corresponding threaded hole 5. In the process of continuous threaded connection with the threaded hole 5, the limit screw 10 will gradually press the movable pressure plate 42 inside the clamping component 4, so that the movable pressure plate 42 clamps and limits the corresponding outer protective plate 3.

[0032] After the explosive roll is installed between the first protective cylinder 1 and the second protective cylinder 2, a detonating cord is installed on the explosive roll. Then, the rope of the existing lifting equipment is connected to the lifting structure 6, and then the lifting equipment is used to set the explosive roll and the entire device into the pre-set blast hole. During the movement of the set, the guide assembly 8 set in the four outer protective sleeves 3 will be synchronously connected with the inner wall of the blast hole, so that the explosive roll is always in the middle position of the blast hole during the movement of the set, avoiding the adverse effects of friction.

[0033] Example 2

[0034] When facing the rotation use of explosive cartridges of different specifications, the distance between the first protective cylinder 1 and the second protective cylinder 2 can be adaptively adjusted, specifically by unscrewing and removing the four limit screws 10 set on the outside of the first protective cylinder 1 and the four limit screws 10 set on the outside of the second protective cylinder 2, and then pushing the first protective cylinder 1 and the second protective cylinder 2 to adjust the first protective cylinder 1 and the second protective cylinder 2 to be close or apart, and the four outer protective sleeves 3 provide guide support;

[0035] After the first protective cylinder 1 and the second protective cylinder 2 are adjusted to the appropriate distance, the eight limit screws 10 are reset and locked. In the detailed process, one end of a limit screw 10 passes through a through hole in the middle of a clamping component 4 and is then threadedly connected to the corresponding threaded hole 5. In the process of continuous threaded connection with the threaded hole 5, the limit screw 10 will gradually press the movable pressure plate 42 inside the clamping component 4, so that the movable pressure plate 42 clamps and limits the corresponding outer protective sleeve 3. After the eight limit screws 10 are assembled, the installation operation of the explosive roll can be carried out according to the steps of the above embodiment one.

[0036] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprise," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. At the same time, in the drawings of the present utility model, fill patterns are only used to distinguish layers and do not make any other limitations.

[0037] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pre-splitting blasting charge auxiliary device, comprising a first protective cylinder (1), a second protective cylinder (2), and a limit screw (10), characterized in that: The surface of the first protective cylinder (1) and the surface of the second protective cylinder (2) are both slidably connected with a plurality of clamping assemblies (4), and an outer protective sleeve (3) is set between the two opposite clamping assemblies (4). The top of the first protective cylinder (1) is fixedly connected with a hanging structure (6). The middle parts of the plurality of clamping assemblies (4) on the surface of the first protective cylinder (1) and the middle parts of the plurality of clamping assemblies (4) on the surface of the second protective cylinder (2) are both provided with through holes penetrating the structures thereof. The surface of the first protective cylinder (1) and the surface of the second protective cylinder (2) are both provided with threaded holes (5). The limiting screw (10) can pass through a through hole in the middle of a clamping component (4) and be threadedly connected to the inside of a corresponding threaded hole (5), and the limiting screw (10) applies pressure to the clamping component (4) and the outer protective sleeve (3) during the process of being threadedly connected to the threaded hole (5), so that the internal movable structure of the clamping component (4) squeezes and limits the outer protective sleeve (3).

2. The pre-splitting blasting charge auxiliary device according to claim 1, characterized in that: The hoisting structure (6) is composed of a support frame and a limiting ring fixedly connected to the top surface of the support frame, the limiting rings are provided in no less than two and are evenly distributed along the circumference of the first protective cylinder (1), and the bottom of the support frame is fixedly connected to the top surface of the first protective cylinder (1).

3. The pre-splitting blasting charge auxiliary device according to claim 1, characterized in that: The specific number of the clamping components (4) is eight and they are respectively installed on the surface of the first protective cylinder (1) and the surface of the second protective cylinder (2) in an evenly distributed manner. The specific number of the outer protective sleeve (3) and the threaded holes (5) are both four.

4. The pre-splitting blasting charge auxiliary device according to claim 3, characterized in that: The eight clamping assemblies (4) each include a semi-open sleeve (41) and a movable pressure plate (42), a folded spring sheet (43) is installed between the side of the semi-open sleeve (41) and the side corresponding to the movable pressure plate (42), and the through hole passes through the middle of the movable pressure plate (42) and the middle of the semi-open sleeve (41).

5. The pre-splitting blasting charge auxiliary device according to claim 4, characterized in that: The surface of the first protective cylinder (1) and the surface of the second protective cylinder (2) are both fixedly sleeved with annular slide rails (9), and the two annular slide rails (9) can be respectively engaged with a semi-open sleeve plate (41) provided on the surface of the first protective cylinder (1) and a semi-open sleeve plate (41) provided on the surface of the second protective cylinder (2).

6. The pre-splitting blasting charge auxiliary device according to claim 1, characterized in that: A clearance groove (7) is provided in the middle of each of the four outer protective sleeves (3), and a guide assembly (8) is mounted on the inner side of the top and the inner side of the bottom of the clearance groove (7). The guide assembly (8) can be reciprocated and accommodated or expanded with the clearance groove (7).

7. The pre-splitting blasting charge auxiliary device according to claim 6, characterized in that: The guide assembly (8) includes a movable rod (81), one end of which is movably sleeved with the inner wall of the corresponding clearance groove (7) through a bearing, a torsion spring (83) is installed between the surface of one end of the movable rod (81) and the inner wall of the corresponding clearance groove (7), and the torsion spring (83) enables the movable rod (81) to be sleeved in the corresponding clearance groove (7) in an inclined state in a non-pressurized state, and an assembly groove is provided in the end head of the other end of the movable rod (81), a support shaft is fixedly sleeved in the assembly groove, and a roller (82) is clamped on the outside of the support shaft.

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