Spacing device for axial spaced charge blasting
By using the positioning components adjustment device of the outer and inner cylinders, the problem of uneven thickness of the partition layer in axial interval charging blasting was solved, which simplified the operation and achieved stable partition layer formation, thus improving blasting efficiency and safety.
Patent Information
- Application Number
- CN202520151341.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-01-22
AI Technical Summary
In axially spaced charge blasting, it is difficult to form a uniform and accurate partition layer when using materials such as sand, gravel, and bamboo tubes to make the partition layer, resulting in cumbersome and unstable operation.
An interval device comprising an outer cylinder, an inner cylinder, and a positioning component is adopted. The inner cylinder is coaxially inserted into the receiving cavity of the outer cylinder, and the positioning component is used for positioning and adjustment to ensure that the length of the interval device is consistent with the required thickness of the interval layer, thus avoiding the use of materials such as sand, gravel, and bamboo tubes to form the partition layer.
It achieves uniform stability of the spacer layer in axially spaced explosive blasting, simplifies the operation process, and avoids the uneven thickness problem caused by the instability of manual operation and the influence of the borehole angle in the existing technology.
Smart Images
Figure CN223856320U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the axial interval charge blasting technical field, concretely relates to a kind of interval device for axial interval charge blasting. BACKGROUND
[0002] In the excavation of tunnel and other civil engineering construction, drilling and blasting method has strong adaptability to geological conditions, low excavation cost, and is the current commonly used blasting excavation method. In the process of slotting blasting, the traditional continuous columnar charge will cause the surrounding rock mass to be excessively crushed, and sometimes it will also cause the explosive to propagate during blasting, resulting in excessive blasting vibration and the problem of insufficient utilization of explosive energy, which will adversely affect the construction.
[0003] Axial interval charge blasting is a new blasting technology. By introducing appropriate intervals between the cartridges, the energy release of the explosives is optimized and the damage to the surrounding rock mass is reduced during blasting. This technology can effectively control the blasting vibration, improve the rock breaking efficiency, and thus improve the safety and economy of construction. When implementing axial interval charge blasting, a sandstone, bamboo tube or other material is used to form a partition layer between the explosive cartridges in the blast hole, thereby achieving the interval between the explosive cartridges.
[0004] However, when using sandstone, bamboo tube or other materials to make the partition layer, even if the thickness of the required partition layer has been calculated, the actual charging process will still be difficult to form a partition layer with uniform and accurate thickness due to the instability of the operation and the angle of the blast hole. Therefore, in the actual use of axial interval charge blasting, there are problems such as complicated process and strong instability, which brings inconvenience to the use of axial interval charge blasting. UTILITY MODEL CONTENTS
[0005] In order to solve the technical problem of the background art that the use of sandstone, bamboo tube or other materials to make the partition layer in the actual use of axial interval charge blasting is difficult to form a partition layer with uniform and accurate thickness due to the reasons such as complicated process and strong instability, the utility model provides an interval device for axial interval charge blasting.
[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0007] An interval device for axial interval charge blasting, the interval device comprises an outer cylinder, an inner cylinder and a positioning assembly; the outer cylinder is provided with a containing cavity inside, and the outer cylinder is provided with an opening; the inner cylinder is coaxial with the outer cylinder, and the inner cylinder is inserted into the containing cavity through the opening; the positioning assembly is arranged on the outer wall of the inner cylinder, for fixing and positioning the inner cylinder and the outer cylinder; the interval device is used to form an interval between explosive cartridges.
[0008] Optionally, the positioning assembly comprises a telescopic button, a linkage part and a clamping block; the inner cylinder comprises a first end and a second end which are axially away from each other, the first end is close to the bottom of the accommodating cavity, and the second end is away from the bottom of the accommodating cavity; the telescopic button is arranged close to the second end and movably arranged on the outer wall of the inner cylinder; the clamping block is arranged close to the first end and movably arranged on the outer wall of the inner cylinder; the linkage part is movably arranged on the outer wall of the inner cylinder and fixedly connected with the telescopic button and the clamping block; a plurality of positioning holes are arranged on the outer wall of the outer cylinder in sequence along the axial direction, the positioning holes pass through the outer wall of the outer cylinder and communicate with the accommodating cavity; the clamping block extends out of the outer wall of the outer cylinder through the positioning hole.
[0009] Optionally, the linkage part comprises a shell, a hard connecting plate and elastic return members; the shell is fixedly arranged between the telescopic button and the clamping block, and the shell has a cavity therein; the hard connecting plate is movably arranged in the cavity, and both ends of the hard connecting plate are fixedly connected with the telescopic button and the clamping block respectively; the elastic return members are two and fixedly arranged on the lower sides of the telescopic button and the clamping block respectively.
[0010] Optionally, a limiting boss is further arranged on the outer wall of the inner cylinder; a limiting groove is arranged on the inner wall of the accommodating cavity, and the limiting groove is arranged along the axial direction of the outer cylinder; the limiting boss is inserted into the limiting groove.
[0011] Optionally, a buffer adhesion layer is arranged on the side end face of the inner cylinder away from the bottom of the accommodating cavity.
[0012] Optionally, the buffer adhesion layer comprises a plastic diaphragm and instant adhesive wrapped in the plastic diaphragm.
[0013] Optionally, the spacing device further comprises a transmission explosion assembly, and the transmission explosion assembly penetrates through the inner cylinder and the outer cylinder.
[0014] Optionally, the transmission explosion assembly comprises a first transmission explosion cylinder and a second transmission explosion cylinder; the first transmission explosion cylinder is fixedly arranged in the accommodating cavity and penetrates through the bottom of the accommodating cavity; the second transmission explosion cylinder is fixedly arranged in the outer cylinder, penetrates through the side end face of the outer cylinder away from the accommodating cavity, and partially sleeves on the first transmission explosion cylinder; the first transmission explosion cylinder and the second transmission explosion cylinder are relatively movable.
[0015] Optionally, the inner cylinder and the outer cylinder are any one of a plastic cylinder or a rubber cylinder.
[0016] Optionally, a scale line is further arranged on the outer wall of the inner cylinder.
[0017] The utility model discloses the beneficial effect is:
[0018] The utility model provides a kind of interval device for axial interval charge blasting, by inner tube coaxial insertion into the containing cavity of outer tube, by positioning component is positioned to the axial position of inner tube and outer tube, in the axial interval charge blasting, the interval device provided by the utility model is adjusted according to the interval layer thickness of requirement to the relative position of outer tube and inner tube, make the length of interval device and the interval layer thickness of requirement be identical, and this interval device is placed between explosive roll of blasthole and forms interval, so when carrying out axial interval charge blasting work, it is not necessary to make partition layer by using sandstone, bamboo tube and so on material, avoid the technical problem that sandstone, bamboo tube and so on material are used to make partition layer in prior art, there is process tedious, strong instability and so on Cause difficult to form thickness uniform, accurate partition layer according to requirement. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 It is the schematic diagram of interval device for axial interval charge blasting in the utility model;
[0020] Figure 2 It is the schematic diagram of outer tube in the utility model;
[0021] Figure 3 It is the schematic diagram of inner tube in the utility model;
[0022] Figure 4 It is the schematic diagram of linkage part in the utility model.
[0023] Wherein: 1, outer tube;11, containing cavity;12, positioning hole;13, limit slot;2, inner tube;21, first end;22, second end;23, limit boss;3, positioning component;31, telescopic button;32, linkage part;321, shell;322, hard connecting plate;323, elastic reset piece;33, clamping block;4, transmission explosion component;41, first transmission explosion barrel;42, second transmission explosion barrel. DETAILED DESCRIPTION
[0024] To make the purpose, technical scheme and advantage of the utility model embodiment clearer, the technical scheme in the utility model embodiment will be clearly and completely described in conjunction with the drawings in the utility model embodiment below, obviously, the described embodiment is only a part of the utility model embodiment, not all embodiments. The description of at least one exemplary embodiment is actually only illustrative, but not as any limitation on the utility model and its application or use. Based on the embodiment in the utility model, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of the utility model protection.
[0025] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components and / or combinations thereof, but do not preclude the presence or addition of one or more other features, steps, operations, devices, components and / or combinations thereof.
[0026] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in the examples are not intended to limit the scope of the present disclosure, unless otherwise specifically stated. It is to be understood that the specific drawings shown are for purposes of the description only and in a form idealized, with a view to the characteristics of illustration and description, and are not necessarily to scale; the dimensions of the various parts are not necessarily to scale, and the dimensions of the various parts are not necessarily to scale. Techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail herein. However, where appropriate, such techniques, methods, and devices can be presumed to be a part of the specification. In all examples shown and discussed herein, any specific values are to be interpreted as merely exemplary, and not as a limitation. Thus, other example embodiments of the example embodiments can have different values. It is to be noted that like reference numerals and letters refer to like items in the following drawings, and once an item is defined in one drawing, it need not be discussed further in subsequent drawings.
[0027] In the description of the present disclosure, it should be understood that the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or position relationship are usually based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and in the absence of contrary description, these orientation words do not indicate and imply that the devices or elements referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present disclosure: the orientation words "inner, outer" refer to the inner and outer relative to the contour of each component.
[0028] For purposes of the description hereinafter, spatially relative terms, such as "above", "below", "up", "down", "between", "within", "left", "right", "front", "back", "upper", "lower", "horizontal", "vertical", "above", "below", "up", "down", "top", "bottom", "side", "end", etc., can be used for ease of description to describe one element's or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if a device in the figures is inverted, elements described as "above" or "up" other elements or features would then be oriented "below" or "down" the other elements or features. Thus, the exemplary term "above" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. It will also be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation, and therefore, the exemplary terms "above", "below", "up", and "down", "horizontal", "vertical", "above", "below", "up", "down", "top", "bottom", "side", "end", etc., can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
[0029] In addition, it should be noted that the use of the terms "first", "second", etc. to describe various components is merely intended to differentiate one component from another, and such terms are not intended to limit the scope of protection of the present application, unless otherwise stated.
[0030] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and embodiments.
[0031] Referring to Figure 1 , a schematic diagram of a spacing device for axial interval charging blasting is shown, which comprises an outer cylinder 1, an inner cylinder 2 and a positioning assembly 3; the inner cylinder 2 is coaxial with the outer cylinder 1, and the inner cylinder 2 is inserted into the accommodating cavity 11 through the opening; the positioning assembly 3 is arranged on the outer wall of the inner cylinder 2, and is used for fixing and positioning the inner cylinder 2 and the outer cylinder 1; the present spacing device is used for forming a spacing between explosive rolls.
[0032] In the present embodiment, the inner cylinder is coaxially inserted into the accommodating cavity of the outer cylinder, and the positioning assembly 3 is used for adjusting the axial positioning of the inner cylinder 2 and the outer cylinder 1. In the axial interval charging blasting, the present spacing device is adjusted to the required length according to the thickness of the interval layer, so that the length of the present spacing device in the axial direction is consistent with the thickness of the required interval layer, and the present spacing device is placed between the explosive rolls of the blast hole to form a spacing, thereby avoiding the use of sandstone, bamboo tube and other materials to make a partition layer in the prior art, and avoiding the technical problems that the process is complicated, the stability is strong, and it is difficult to form a partition layer with uniform and accurate thickness according to the requirements.
[0033] In specific use, the drilling of the blast hole can be carried out on the working face by an artificial air drill or a drilling jumbo, and the interval layer thickness required is obtained according to the measurement in the early stage of the project, the relative position of the outer cylinder 1 and the inner cylinder 2 is adjusted by the positioning assembly 3, so that the length of the interval device in the axial direction is consistent with the interval layer thickness. After the first explosive charge is filled in the blast hole, the interval device is pushed into the blast hole and abuts against the explosive charge, and the filling of the explosive charge and the pushing of the interval device are repeated until the preparation work of the axial interval charging blasting is completed. The interval device provided by the utility model can be adjusted according to the thickness of the interval layer in actual use, and the interval of the explosive charge can be directly pushed into the blast hole, which is simple, fast and convenient, and a uniform and stable interval layer can be formed, which is not affected by the instability of manual operation and different blast hole angles, and the axial interval charging blasting operation is greatly facilitated.
[0034] Optionally, with reference to Figure 2 and Figure 3 The positioning assembly 3 in the utility model comprises a telescopic button 31, a linkage part 32 and a clamping block 33. The inner cylinder 2 comprises a first end 21 and a second end 22 which are axially away from each other. The first end 21 is close to the bottom of the accommodating cavity 11, and the second end 22 is away from the bottom of the accommodating cavity 11. The telescopic button 31 is arranged close to the second end 22 and movably arranged on the outer wall of the inner cylinder 2. The clamping block 33 is arranged close to the first end 21 and movably arranged on the outer wall of the inner cylinder 2. The linkage part 32 is movably arranged on the outer wall of the inner cylinder 2 and fixedly connected with the telescopic button 31 and the clamping block 33. A plurality of positioning holes 12 are arranged on the outer wall of the outer cylinder 1 in sequence along the axial direction. The positioning holes 12 pass through the outer wall of the outer cylinder 1 and communicate with the accommodating cavity 11. The clamping block 33 extends out of the outer wall of the outer cylinder 1 through the positioning holes 12.
[0035] In the embodiment, the positioning assembly 3 comprises a telescopic button 31, a linkage part 32 and a clamping block 33. The telescopic button 31 and the linkage part 32 drive the clamping block 33 to move. In use, the clamping block 33 extends out of the positioning hole 12, so as to position and fix the inner cylinder 2 and the outer cylinder 1, so that the inner cylinder 2 and the outer cylinder 1 are in the appropriate position, and the length of the interval device in the axial direction is consistent with the required interval layer thickness. When it is necessary to adjust the relative position of the inner cylinder 2 and the outer cylinder 1, the telescopic button 31 can be pressed first. The telescopic button 31 and the linkage part 32 drive the clamping block 33 to retract into the accommodating cavity 11 through the positioning hole 12, so as to adjust the position of the inner cylinder 2, so that the inner cylinder 2 and the outer cylinder 1 are in the required position. The telescopic button 31 is released, and the clamping block 33 extends out of the positioning hole 12 again under the driving of the telescopic button 31 and the linkage part 32, so as to fix and position the inner cylinder 2 and the outer cylinder 1 again.
[0036] Optionally, with reference toFigure 4 The linkage part 32 in the utility model comprises a shell 321, a hard connecting plate 322 and elastic reset members 323; the shell 321 is fixedly arranged between the telescopic button 31 and the clamping block 33, and the shell 321 has a cavity therein; the hard connecting plate 322 is movably arranged in the cavity, and the two ends of the hard connecting plate 322 are fixedly connected with the telescopic button 31 and the clamping block 33 respectively; the elastic reset members 323 are two, and are fixedly arranged at the lower sides of the telescopic button 31 and the clamping block 33 respectively.
[0037] In the embodiment, the shell 321 is fixedly arranged between the telescopic button 31 and the clamping block 33, and the shell 321 has a cavity therein; the hard connecting plate 322 is movably arranged in the cavity, and the shell 321 protects and limits the hard connecting plate 322; the two ends of the hard connecting plate 322 are fixedly connected with the telescopic button 31 and the clamping block 33 respectively, and the two elastic reset members 323 are fixedly arranged at the lower sides of the telescopic button 31 and the clamping block 33 respectively; in use, when the relative positions of the inner cylinder 2 and the outer cylinder 1 need to be adjusted, the telescopic button 31 is pressed down, the telescopic button 31 drives the clamping block 33 to retract into the accommodating cavity 11 through the hard connecting plate 322, so that the inner cylinder 2 and the outer cylinder 1 can move relatively along the axial direction, and after being adjusted to the required position, the telescopic button 31 is released, the telescopic button 31 and the clamping block 33 are reset under the action of the elastic reset members 323, so that the clamping block 33 extends out of the positioning hole 12 again, the positions of the inner cylinder 2 and the outer cylinder 1 are positioned through the clamping block 33 and the positioning hole 12, so that the spacing device is in the length consistent with the required interval layer thickness.
[0038] Further, the elastic reset members 323 in the embodiment can be specifically selected as springs, air bags or other elastic reset members known to those skilled in the art, and are not specifically limited in the embodiment.
[0039] Optionally, with reference to Figure 2 and Figure 3 The utility model discloses a limiting boss 23 is still provided on the outer wall of the inner cylinder 2; the inner wall of the accommodating cavity 11 is provided with a limiting groove 13, and the limiting groove 13 is arranged along the axial direction of the outer cylinder 1; the limiting boss 23 is inserted into the limiting groove 13.
[0040] In the embodiment, the limiting boss 23 is arranged on the outer wall of the inner cylinder 2, and the limiting groove 13 is arranged on the inner wall of the outer cylinder 1; the positions of the inner cylinder 2 and the outer cylinder 1 are limited through the limiting groove 13 and the limiting boss 23; when the relative positions of the inner cylinder 2 and the outer cylinder 1 are adjusted, the inner cylinder 2 and the outer cylinder 1 are prevented from rotating in the circumferential direction, so that the clamping block 33 deviates from the position of the positioning hole 12 and needs to be adjusted again, thereby causing inconvenience in operation.
[0041] Optionally, a buffer adhesion layer is arranged on the side end face of the inner cylinder 2 away from the bottom of the accommodating cavity 11.
[0042] In the embodiment, the buffer adhesion layer is arranged on the side end face of the inner cylinder 2 away from the bottom of the accommodating cavity 11, and when the axial interval charging is performed into the blast hole, the buffer adhesion layer can not only play a role of adhesion fixation of the explosive roll and the interval device, but also play a role of buffer, reduce the impact on the explosive roll, and improve the safety and reliability.
[0043] Optionally, the buffer adhesion layer in the utility model comprises a plastic diaphragm and instant dry adhesive wrapped in the plastic diaphragm.
[0044] In the embodiment, the instant dry adhesive is wrapped by the plastic diaphragm to form the buffer adhesion layer, and in the use process, the plastic diaphragm is broken under the impact, and the instant dry adhesive is overflowed to adhere the explosive roll and the interval device while the buffer effect is generated by the instant dry adhesive.
[0045] Optionally, referring to Figures 1 to 3 The interval device in the utility model further comprises an explosion transmission assembly 4, and the explosion transmission assembly 4 penetrates the inner cylinder 1 and the outer cylinder 2.
[0046] In the embodiment, the relay initiation of the explosion transmission assembly 4 is performed, the interval explosive roll is sequentially detonated under the action of the explosion transmission assembly 4, and the axial interval charging blasting operation is realized.
[0047] Optionally, referring to Figures 1 to 3 The explosion transmission assembly 4 in the utility model comprises a first explosion transmission cylinder 41 and a second explosion transmission cylinder 42; the first explosion transmission cylinder 41 is fixedly arranged in the accommodating cavity 11 and penetrates the bottom of the accommodating cavity 11; the second explosion transmission cylinder 42 is fixedly arranged in the outer cylinder 2, the second explosion transmission cylinder 42 penetrates the side end face of the outer cylinder 2 away from the accommodating cavity 11, and the second explosion transmission cylinder 42 is partially sleeved on the first explosion transmission cylinder 41, and the first explosion transmission cylinder 41 and the second explosion transmission cylinder 42 are relatively movable.
[0048] In the embodiment, the second explosion transmission cylinder 42 is partially sleeved on the first explosion transmission cylinder 41, and the first explosion transmission cylinder 41 and the second explosion transmission cylinder 42 are relatively movable, so that in the process of adjusting the relative position of the inner cylinder 2 and the outer cylinder 1, the first explosion transmission cylinder 41 and the second explosion transmission cylinder 42 are relatively movable, thereby preventing the first explosion transmission cylinder 41 and the second explosion transmission cylinder 42 from falling off and affecting the explosion transmission effect.
[0049] Optionally, the inner cylinder 2 and the outer cylinder 1 in the utility model are any one of plastic cylinders or rubber cylinders.
[0050] In the embodiment, the inner cylinder 2 and the outer cylinder 1 are any one of plastic cylinders or rubber cylinders, have the advantages of stable property, light weight, low cost and no influence on the blasting effect of the explosive roll, and are easy to use on a large scale.
[0051] Optionally, the outer wall of the inner cylinder 2 in this utility model is also provided with scale lines.
[0052] In this embodiment, the relative positions of the inner cylinder 2 and the outer cylinder 1 can be accurately positioned according to the scale lines, so that the axial length of the spacer can accurately correspond to the required thickness of the spacer layer.
[0053] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0054] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.
Claims
1. A spacing device for axially spaced charges for blasting, characterised in that, The spacing device comprises an outer cylinder (1), an inner cylinder (2) and a positioning assembly (3); The outer cylinder (1) is internally provided with a containing cavity (11), and the outer cylinder (1) is provided with an opening; The inner cylinder (2) is coaxial with the outer cylinder (1), and the inner cylinder (2) is inserted into the containing cavity (11) through the opening; The positioning assembly (3) is arranged on the outer wall of the inner cylinder (2) and is used for fixing and positioning the inner cylinder (2) and the outer cylinder (1); The spacing device is used for forming a spacing between explosive coils.
2. The spacing device for axially spacing charge blasting according to claim 1, wherein, The positioning assembly (3) comprises a telescopic button (31), a linkage (32) and a clamping block (33); The inner cylinder (2) comprises a first end (21) and a second end (22) which are axially away from each other, the first end (21) is close to the bottom of the containing cavity (11), and the second end (22) is away from the bottom of the containing cavity (11); The telescopic button (31) is arranged close to the second end (22), and the telescopic button (31) is movably arranged on the outer wall of the inner cylinder (2); The clamping block (33) is arranged close to the first end (21), and the clamping block (33) is movably arranged on the outer wall of the inner cylinder (2); The linkage (32) is movably arranged on the outer wall of the inner cylinder (2), and the linkage (32) is fixedly connected with the telescopic button (31) and the clamping block (33); A plurality of positioning holes (12) are sequentially arranged on the outer wall of the outer cylinder (1) in the axial direction, the positioning holes (12) penetrate the outer wall of the outer cylinder (1) and communicate with the containing cavity (11); The clamping block (33) extends out of the outer wall of the outer cylinder (1) through the positioning hole (12).
3. A spacing device for axially spaced charges for blasting according to claim 2, characterised in that, The linkage (32) comprises a shell (321), a hard connecting plate (322) and an elastic reset member (323); The shell (321) is fixedly arranged between the telescopic button (31) and the clamping block (33), and the shell (321) has a cavity therein; The hard connecting plate (322) is movably arranged in the cavity, and the two ends of the hard connecting plate (322) are fixedly connected with the telescopic button (31) and the clamping block (33) respectively; The elastic reset member (323) is two, and is fixedly arranged on the lower side of the telescopic button (31) and the clamping block (33) respectively.
4. The spacing device for axially spaced charges blasting according to claim 1, characterized in that, A limiting boss (23) is further arranged on the outer wall of the inner cylinder (2); A limiting groove (13) is arranged on the inner wall of the containing cavity (11), and the limiting groove (13) is arranged along the axial direction of the outer cylinder (1); The limiting boss (23) is inserted into the limiting groove (13).
5. The spacing device for axially spaced charges for blasting according to claim 1, characterized in that, A buffer adhesion layer is arranged on the side end face of the inner cylinder (2) away from the bottom of the containing cavity (11).
6. A spacing device for axially spaced charges for blasting according to claim 5 wherein, The buffer adhesion layer comprises a plastic diaphragm and a flash glue wrapped in the plastic diaphragm.
7. The spacing device for axially spaced charges of a blasting according to claim 1, characterized in that, The interval device further comprises a booster assembly (4) penetrating through the inner cylinder (2) and the outer cylinder (1).
8. A spacing device for axially spaced charges for blasting according to claim 7, characterised in that, The booster assembly (4) comprises a first booster cylinder (41) and a second booster cylinder (42). The first booster cylinder (41) is fixedly arranged in the accommodating cavity (11) and penetrates through the bottom of the accommodating cavity (11). The second booster cylinder (42) is fixedly arranged in the outer cylinder (1) and penetrates through the end face of the outer cylinder (1) away from the accommodating cavity (11), and the second booster cylinder (42) is partially sleeved on the first booster cylinder (41). The first booster cylinder (41) and the second booster cylinder (42) are relatively movable.
9. A spacing device for axially spaced charges for blasting according to any one of claims 1 to 8, characterised in that, The inner cylinder (2) and the outer cylinder (1) are any one of a plastic cylinder or a rubber cylinder.
10. A spacing device for axially spaced charges for blasting according to any one of claims 2 to 8, characterised in that, A scale line is further arranged on the outer wall of the inner cylinder (2).