Interval non-coupling grain fixing device for presplitting blasting
By designing a fixing device for spaced uncoupled medicine columns, the problem of position and interval adjustment of medicine columns during blasting is solved, and the blasting effect and quality are improved.
Patent Information
- Application Number
- CN202421497984.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-06-27
AI Technical Summary
During the blasting process of uncoupled charges in the interval, the softness of the bamboo strips makes it difficult for the medicine column to adjust the air spacing and axis position, affecting the blasting effect.
A fixing device including a cylinder, adjustable charge and fastener is designed to ensure the correct position and space of the medicine column in the gun bore through the adjustable axial charge capacity adjustment of the charge and the fastener fixing function.
By adjusting the air spacing and axis position of the medicine column, the blasting effect is improved, the concentration of blasting energy is increased, the number of flying stones is reduced, and the crushing efficiency and blasting quality are improved.
Smart Images
Figure CN222652053U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of blasting engineering, in particular to an interval uncoupled charge column fixing device for pre-splitting blasting. Background Art
[0002] Interval uncoupled charging is a blasting charging method. In this charging form, there is a certain gap between the charge roll and the blasthole wall, that is, the uncoupled state, and there is also a certain gap between the charge rolls. Due to the air gap between the charge bag and the hole wall, the explosion energy of the explosive does not directly act on the rock, but on the air. The shock wave energy is converted into stress wave energy and then transmitted to the rock, which greatly reduces the peak pressure of the shock wave acting on the hole wall, reduces the destructive effect of the blasting on the surrounding rock, and reduces the adverse effects such as blasting vibration; at the same time, it is also beneficial to improve the utilization rate of the explosive energy and make the blasting effect more ideal. It has certain applications in engineering blasting fields such as mining and tunneling.
[0003] Since bamboo sticks are not prone to static electricity and are relatively soft and environmentally friendly, when blasting, the explosive columns with pre-adjusted lengths are usually bundled on bamboo sticks and sent into the blasthole. However, since bamboo sticks are bendable and have a certain deflection, once the explosive columns are bundled on the bamboo sticks, it is not easy to adjust the air gap between two adjacent explosive columns. At the same time, when the bamboo sticks bundled with explosive columns are sent into the blasthole, it is difficult to ensure that the explosive columns are located on the axis of the blasthole, affecting the blasting effect.
[0004] To this end, we propose an interval uncoupled charge fixing device for pre-splitting blasting to solve the above-mentioned problems. Utility Model Content
[0005] The embodiment of the utility model provides a spaced uncoupled charge fixing device for pre-splitting blasting to solve the above-mentioned technical problems.
[0006] The embodiment of the utility model adopts the following technical scheme: it includes a cylindrical body with at least one end open, an adjustable charge and a fastener, the cylindrical body is used to be placed in a blast hole, the adjustable charge is movably installed in the cylindrical body and coincides with the axis of the cylindrical body, the axial charge capacity of the adjustable charge is adjustable and is used to load powder columns of different capacities, and the fastener is threadedly connected to the outer wall of the adjustable charge and is used to position the adjustable charge at different axial positions in the cylindrical body.
[0007] Furthermore, the adjustable medicine filling member includes a containing cylinder and at least one positioning plate movably installed in the containing cylinder, and a plurality of plug-in grooves equidistantly arranged along the axial direction of the containing cylinder are opened on the circumferential inner wall of the containing cylinder, and the positioning plate is movably plugged into the plug-in grooves.
[0008] Furthermore, the adjustable medicine charging member includes a filling cylinder and at least one positioning plate movably installed in the filling cylinder, and the upper thread of the positioning plate is connected to a locking rod, and the locking rod extends to the outside of the cylindrical body through through grooves opened on the filling cylinder and the cylindrical body. When the rotating locking rod conflicts with the outer wall of the cylindrical body, the positioning plate is fixed.
[0009] Furthermore, a guide slot is provided on the inner wall of the cylindrical body, and a sliding convex strip slidably connected to the guide slot is provided on the adjustable medicine charging member.
[0010] Furthermore, a limiting member is detachably connected to the cylindrical body, and the limiting members are multiple in number and are equidistantly arranged along the axis of the cylindrical body.
[0011] Furthermore, the cylindrical body is provided with scale lines.
[0012] At least one of the above technical solutions adopted in the embodiment of the utility model can achieve the following beneficial effects:
[0013] In the utility model, the axial charge capacity of the adjustable charge is adjusted, and the adjustable charge is fixed at different positions on the cylindrical body by fasteners, so that the air spacing distance between two adjacent adjustable charge columns can be adjusted, so that the explosions of adjacent charge columns are coordinated with each other, and the overall blasting effect is improved. The charge columns are positioned in the cylindrical body that coincides with the axis of the blasthole by the limiter, so that the energy generated by the explosion is more concentrated, the number of flying rocks generated during the blasting process is reduced, and the crushing efficiency and blasting quality of the blasting are improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:
[0015] Figure 1 The three-dimensional structure of the utility model is shown in FIG. Figure 1 ;
[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;
[0017] Figure 3 This is a schematic diagram of the cylindrical structure of the utility model;
[0018] Figure 4 This is a schematic structural diagram of the first embodiment of the present utility model;
[0019] Figure 5 This is a schematic diagram of the structure of the second embodiment of the present utility model. Figure 1 ;
[0020] Figure 6 This is a schematic diagram of the structure of the second embodiment of the present utility model. Figure 2 ;
[0021] Figure 7 It is a schematic diagram of the cross-sectional structure of the cylindrical body of the utility model installed in the blast hole.
[0022] 1. Cylindrical body; 2. Adjustable charge piece; 21. Container; 22. Positioning plate; 23. Plug-in slot; 3. Fastener; 4. Locking rod; 5. Guide slide groove; 51. Sliding convex strip; 6. Limiting piece; 7. Scale line; 8. Digital electronic detonator; 9. Detonator foot line. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in combination with the specific embodiments of the utility model and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] The technical solutions provided by various embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.
[0025] The utility model provides a spaced uncoupled charge column fixing device for pre-splitting blasting, such as Figure 1-7 As shown, it comprises a cylindrical body 1 with at least one end open, an adjustable charge 2 and a fastener 3. The cylindrical body 1 is used to be placed in a blast hole. A guide groove 5 is provided on the inner wall of the cylindrical body 1. A sliding convex strip 51 slidably connected to the guide groove 5 is provided on the adjustable charge 2. The adjustable charge 2 is slidably installed into the cylindrical body 1 through the sliding connection between the sliding convex strip 51 and the guide groove 5, so as to prevent the adjustable charge 2 from rotating randomly in the cylindrical body 1 and make the adjustable charge 2 2 coincides with the axis of the cylindrical body 1, the adjustable charge piece 2 may be a semi-cylindrical structure, etc., which is convenient for loading the explosive column, such as emulsified or expanded explosives, etc., and may be installed with a digital electronic detonator 8, which is led out to the ground through the detonator foot line 9 through the through groove. When in use, the explosive column can be first placed in the charge cavity of the adjustable charge piece 2, and then the adjustable charge piece 2 is loaded into the cylindrical body 1, and then the axial position of the adjustable charge piece 2 on the cylindrical body 1 is fixed by the fastener 3;
[0026] Specifically, the fastener 3 is threadedly connected to the outer wall of the adjustable charge 2. When the fastener 3 is rotated, the upper end surface of the fastener 3 can be tightly in contact with the outer surface of the cylindrical body 1, so as to lock the position of the adjustable charge 2, which is more convenient and quick, so as to facilitate the adjustment of the air gap between two adjacent charge columns according to the rock characteristics and blasting requirements. For example, for rocks with higher hardness, the length of the air gap can be appropriately increased to improve the blasting effect; and for softer rocks, the length of the air gap should be appropriately reduced to avoid affecting the blasting effect, etc. Among them, a through groove is opened on the cylindrical body 1. When installing the adjustable charge 2, the fastener 3 can be first inserted from the open end of the through groove to facilitate the loading of the adjustable charge 2. After the adjustable charge 2 is fixed in the cylindrical body 1, the uppermost adjustable charge 2 can be filled with fillers such as wood blocks, plastics, and rubber to help control the blasting effect of the charge column and make it more concentrated, thereby achieving the purpose of optimizing the blasting effect. In addition, the cylindrical body 1 and the adjustable charge 2 can both be made of non-conductive, non-static insulating materials such as polytetrafluoroethylene to avoid premature explosion.
[0027] like Figure 4 As shown, the first embodiment provided by the utility model is that the adjusting medicine charging member includes a containing barrel 21 and at least one positioning plate 22 movably installed in the containing barrel 21, and a plurality of plug-in grooves 23 equidistantly arranged along the axial direction of the containing barrel 21 are opened on the circumferential inner wall of the containing barrel 21, and the positioning plate 22 is movably plugged into the plug-in grooves 23. According to the length of the medicine column, the positioning plate 22 can be inserted into different plug-in grooves 23 to fix the medicine column.
[0028] like Figure 4 as well as Figure 5 As shown, the second embodiment provided by the utility model is that the adjustable medicine charging part 2 includes a filling tube 21 and at least one positioning plate 22 movably installed in the filling tube 21, and the upper thread of the positioning plate 22 is connected with a locking rod 4, and the locking rod 4 extends to the outside of the cylindrical body 1 through the through grooves opened on the filling tube 21 and the cylindrical body 1. The structure of the locking rod 4 is the same as that of the fastener 3. When the rotating locking rod 4 conflicts with the outer wall of the cylindrical body 1, the positioning plate 22 is fixed. Different from the first embodiment, the positioning plate 22 can be fixed by the locking rod 4 at any position in the filling tube 21, and the adjustment accuracy is higher. In the first embodiment, due to the certain interval between two adjacent plug-in grooves 23, the position accuracy of the positioning plate 22 is poor, but when adjusting, it is only necessary to insert the positioning plate 22 into the plug-in grooves 23 at different positions, which is more convenient and quick.
[0029] Among them, when the adjustable medicine charging member 2 is loaded into the cylindrical body 1, a part of the outer wall of the medicine column contacts the inner wall of the containing tube 21, and a part contacts the inner wall of the cylindrical body 1, so as to prevent the medicine column from falling. At the same time, if the number of the positioning plate 22 is one, the medicine column is fixed by cooperating with the end of the containing tube 21, and when the number of the positioning plates 22 is two, the medicine column can be clamped by the two positioning plates 22.
[0030] Furthermore, the cylindrical body 1 is provided with scale lines 7. When positioning the adjustable charge 2, the air gap is adjusted by referring to the scale values on the scale lines 7.
[0031] Furthermore, the cylindrical body 1 is detachably connected to a limiting member 6, and the number of the limiting members 6 is multiple and they are equidistantly arranged along the axis of the cylindrical body 1. When the cylindrical body 1 is placed in the blasthole, the corresponding limiting member 6 can be selected according to the distance between the cylindrical body 1 and the inner wall of the blasthole. The width of the limiting member 6 is the distance between the cylindrical body 1 and the inner wall of the blasthole, so that the cylindrical body 1 can be installed in a position coincident with the axis of the blasthole, so that the energy generated by the explosion is more concentrated, and the number of flying rocks generated during the blasting process is reduced, thereby improving the crushing efficiency and blasting quality of the blasting.
Claims
1. A spaced uncoupled charge fixing device for pre-splitting blasting, characterized in that: include; A cylindrical body (1) with at least one end open, the cylindrical body (1) being used for being placed in a blast hole; An adjustable charge member (2), the adjustable charge member (2) being movably mounted in the cylindrical body (1) and coinciding with the axis of the cylindrical body (1), the axial charge capacity of the adjustable charge member (2) being adjustable and being used for loading charge columns of different capacities; A fastener (3) is threadedly connected to the outer wall of the adjustable charge piece (2) and is used to position the adjustable charge piece (2) at different axial positions in the barrel.
2. The device for fixing spaced uncoupled charge columns for pre-splitting blasting according to claim 1, characterized in that: The adjustable medicine-filling member (2) comprises a containing tube (21) and at least one positioning plate (22) movably mounted in the containing tube (21); a plurality of plug-in grooves (23) equidistantly arranged along the axial direction of the containing tube (21) are provided on the circumferential inner wall of the containing tube (21); and the positioning plate (22) is movably plugged into the plug-in grooves (23).
3. The device for fixing spaced uncoupled charge columns for pre-splitting blasting according to claim 1, characterized in that: The adjustable medicine-filling member (2) comprises a containing tube (21) and at least one positioning plate (22) movably mounted in the containing tube (21); a locking rod (4) is connected to the upper thread of the positioning plate (22); the locking rod (4) extends to the outside of the cylindrical body (1) through through grooves provided on the containing tube (21) and the cylindrical body (1); when the locking rod (4) is rotated to abut against the outer wall of the cylindrical body (1), the positioning plate (22) is fixed.
4. The device for fixing spaced uncoupled charge columns for pre-splitting blasting according to claim 1, characterized in that: A guide slot (5) is provided on the inner wall of the cylindrical body (1), and a sliding convex strip (51) is provided on the adjustable medicine charging member (2) and is slidably connected to the guide slot (5).
5. The device for fixing spaced uncoupled charge columns for pre-splitting blasting according to claim 1, characterized in that: The cylindrical body (1) is detachably connected to a limiting member (6), and the limiting members (6) are multiple in number and are equidistantly arranged along the axis of the cylindrical body (1).
6. The device for fixing spaced uncoupled charge columns for pre-splitting blasting according to claim 1, characterized in that: The cylindrical body (1) is provided with scale lines (7).