A barrel charge structure

Abstract

The utility model discloses a kind of cannon barrel charge structure, belong to blasting device technical field, including cartridge and air spacer;Wherein cartridge includes cylindrical section cylinder and the circular table section cylinder connected with the both ends of cylindrical section cylinder, the cross-sectional area of circular table section cylinder gradually decreases away from the direction of cylindrical section cylinder, cartridge is filled with explosive, the one end sealing of circular table section cylinder away from cylindrical section cylinder, the outer wall of cylindrical section cylinder is provided with first helical turbulence groove for the turbulence of shock wave;Air spacer includes outer sleeve, the both ends of outer sleeve are slidably provided with connecting cylinder respectively, the outer side end inner cavity of connecting cylinder is configured with the circular table type cavity that cooperates with circular table section cylinder;The cannon barrel charge structure disclosed in the utility model effectively solves the problem that the existing charge structure exists low transmission explosion reliability, poor blasting energy utilization rate, finally can effectively improve blasting effect.

Description

Technical Field

[0001] This utility model belongs to the field of blasting device technology, specifically relating to a gun barrel charging structure. Background Technology

[0002] Blasting operations are a crucial step in modern mining engineering for breaking up rock masses and achieving efficient extraction. However, the groove effect, which is prevalent in deep-hole blasting, is a major challenge affecting blasting effectiveness. The groove effect refers to the air shock wave that precedes the detonation wave within the borehole, propagating along the gap between the charge and the borehole wall. This shock wave compresses or damages unexploded charges, causing interruption of detonation propagation and resulting in misfires, which seriously threaten operational safety and efficiency.

[0003] Existing borehole charging structures typically consist of multiple cartridge cases connected in series with air spacers between them. The air spacers are mostly simple tubular structures whose function is limited to creating air sections between the cartridge cases, and are mechanically connected by simple threads or snap-fits.

[0004] The existing borehole charging structure has two problems during blasting: First, there is no effective guiding and centering mechanism between adjacent cartridges, and the axis is prone to offset when the cartridges are connected, which hinders the stable propagation of the detonation wave; Second, the groove effect cannot be suppressed, and unexploded cartridges are at risk of being destroyed by the leading shock wave; The above two problems together affect the overall blasting effect. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a gun barrel charging structure that addresses the shortcomings of the prior art, and has a simple structure, reasonable design, and strong practicality.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a gun barrel charging structure, comprising: The cartridge case includes a cylindrical section and a frustum section connected to both ends of the cylindrical section. The cross-sectional area of ​​the frustum section decreases away from the cylindrical section. The end of the frustum section away from the cylindrical section is sealed. A first spiral turbulence groove for turbulence of the shock wave is provided on the outer wall of the cylindrical section. An air gap includes an outer sleeve, with connecting cylinders at both ends of the outer sleeve. The inner cavity of one end of the connecting cylinder is configured with a frustum-shaped cavity that mates with the frustum-shaped section of the cylinder.

[0007] Preferably, the first spiral turbulence channel includes two sidewalls and an arc-shaped channel bottom disposed between the two sidewalls.

[0008] Preferably, the outer wall of the outer sleeve is provided with a second spiral turbulence groove for turbulenting the shock wave.

[0009] Preferably, the second spiral turbulence channel includes two parallel sidewalls and a rectangular channel bottom disposed between the two sidewalls.

[0010] Preferably, the outer wall of the frustum section is provided with multiple connecting ribs, which are arranged in a ring, and the inner wall of the connecting cylinder is provided with connecting grooves that mate with the connecting ribs.

[0011] Preferably, the connecting cylinder and the outer sleeve are slidably connected, the connecting cylinder can slide along the axial direction of the outer sleeve, and a spring is provided between the two connecting cylinders.

[0012] This utility model has the following advantages compared with the prior art: 1. This utility model discloses a barrel charging structure, which automatically centers and matches the frustum-shaped cavity inside the connecting cylinder of the barrel end with the air spacer to ensure that the axes of adjacent barrels are strictly aligned after connection, providing a reliable path for the stable linear propagation of the detonation wave and solving the risk of detonation interruption caused by misalignment of the charging. 2. The present invention discloses a barrel charging structure. By setting a first spiral turbulence groove on the outer wall of the cylindrical section of the main body of the charging structure, it can continuously and strongly disturb the forward-propagating shock wave, thereby effectively suppressing the axial propagation of the shock wave along the outer side of the barrel and preventing the shock wave from damaging the unexploded barrel. Therefore, the barrel charging structure disclosed in this invention effectively solves the problems of low detonation reliability and poor blasting energy utilization in existing charging structures, and ultimately can effectively improve the blasting effect. 3. The present invention provides a barrel charging structure, which, by setting a second spiral turbulence groove, ensures that the shock wave is continuously and uninterruptedly disturbed along the propagation path of the entire charging structure, whether in the barrel section or the spacer section. The turbulent airflow from the first spiral groove of the barrel interacts with the second spiral groove, further aggravating the turbulence and energy dissipation of the shock wave, thereby improving the overall charging structure's ability to suppress the groove effect.

[0013] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0014] Figure 1 This is a perspective view of a gun barrel charging structure according to the present invention; Figure 2 This is a front view schematic diagram of a gun barrel charging structure according to the present invention; Figure 3 for Figure 2 AA sectional view.

[0015] Explanation of reference numerals in the attached figures: 1. Cartridge; 1-1. Cylindrical section; 1-2. Frustum section; 1-3. First spiral turbulence groove; 1-4. Connecting rib; 2. Air separator; 2-1. Connecting cylinder; 2-2. Frustum-shaped cavity; 2-3. Outer sleeve; 2-4. Second spiral turbulence groove; 2-5. Connecting groove; 2-6. Spring. Detailed Implementation

[0016] like Figure 1 , Figure 2 , Figure 3 As shown, this utility model discloses a gun barrel charging structure, including a cartridge case 1 and an air separator 2. The cartridge case 1 includes a cylindrical section 1-1 and a frustum section 1-2 connected to both ends of the cylindrical section 1-1. The cross-sectional area of ​​the frustum section 1-2 gradually decreases along the direction away from the cylindrical section 1-1. The cartridge case 1 is filled with explosives. The end of the frustum section 1-2 away from the cylindrical section 1-1 is sealed. A first spiral turbulence groove 1-3 for turbulenting shock waves is provided on the outer wall of the cylindrical section 1-1. The air separator 2 includes an outer sleeve 2-3. Connecting cylinders 2-1 are respectively provided at both ends of the outer sleeve 2-3. The inner cavity of one end of the connecting cylinder 2-1 is configured with a frustum-shaped cavity 2-2 that cooperates with the frustum section 1-2.

[0017] The barrel charging structure disclosed in this utility model automatically centers itself by connecting the frustum-shaped section 1-2 at the end of the cartridge 1 to the frustum-shaped cavity inside the connecting cylinder 2-1 of the air spacer 2. This ensures that the axes of adjacent cartridges are effectively aligned after connection, providing a reliable path for the stable linear propagation of the detonation wave and solving the risk of detonation interruption caused by misalignment of the charging structure. At the same time, the first spiral turbulence groove 1-3 set on the outer wall of the cylindrical section 1-1 of the main body of the charging structure can continuously and strongly disturb the forward-propagating shock wave, thereby effectively suppressing the axial propagation of the shock wave along the outer side of the cartridge and preventing damage to unexploded cartridges. Therefore, the barrel charging structure disclosed in this utility model effectively solves the problems of low detonation reliability and poor blasting energy utilization in existing charging structures, and ultimately effectively improves the blasting effect.

[0018] Furthermore, the first spiral turbulence channel 1-3 disclosed in this embodiment includes two side walls and an arc-shaped channel bottom disposed between the two side walls. Because the arc-shaped inner wall can smoothly guide the high-speed propagating shock wave, causing it to form a stable and strong vortex within the channel, it efficiently breaks the continuity of the shock wave, achieving reliable suppression of the trench effect. In addition, the arc-shaped structure can effectively avoid the stress concentration effect caused by sharp corners or right angles, significantly improving the structural strength and safety of the cartridge when subjected to internal explosive loads. Compared to rectangular or other sharp-cornered cross-sections, this embodiment configures the bottom surface of the first spiral turbulence channel 1-3 as arc-shaped, achieving a balance between efficient turbulence and structural reinforcement. While ensuring core functions, it maximizes the structural strength of the cartridge during detonation, thereby further improving the reliability of the entire charging system.

[0019] Furthermore, a second spiral turbulence groove 2-4 is provided on the outer wall of the outer sleeve 2-3 to turbulentize the shock wave. In this embodiment, by providing the second spiral turbulence groove 2-4 on the outer wall of the outer sleeve, the turbulence blind zone existing in the annular space occupied by the air spacer between the cartridges is compensated. If the shock wave passes directly through the smooth outer side of the outer sleeve, the disturbance to the shock wave will be weakened. However, by providing the second spiral turbulence groove, it is ensured that the shock wave will be continuously and uninterruptedly disturbed along the propagation path of the entire charge structure, whether in the cartridge section or the spacer section. The turbulent airflow from the first spiral groove of the cartridge interacts with the second spiral groove, further aggravating the turbulence and energy dissipation of the shock wave, thereby improving the overall charge structure's ability to suppress the groove effect.

[0020] Furthermore, the second spiral turbulence groove 2-4 disclosed in this embodiment includes two parallel sidewalls and a rectangular groove bottom disposed between the two sidewalls. The groove bottom of the second spiral turbulence groove 2-4 is designed as rectangular because the sharp edges and right-angled walls of the rectangular groove form strong turbulence ridges. When the shock wave flows through these ridges, it will be immediately forcibly stripped and torn apart, forming disordered vortices within the groove, thereby accelerating the dissipation of shock wave energy; thus further enhancing the ability to suppress the groove effect.

[0021] Furthermore, in this embodiment, the outer wall of the frustum-shaped cylindrical section 1-2 is provided with multiple connecting ribs 1-4, which are arranged in a ring. The inner wall of the connecting cylinder 2-1 is provided with connecting grooves 2-5 that cooperate with the connecting ribs 1-4. By designing the connecting ribs 1-4 and the corresponding connecting grooves 2-5, relative rotation between the cartridge 1 and the spacer is avoided after connection, thereby ensuring the consistency of the direction of the spiral turbulence grooves on adjacent cartridges. Therefore, the turbulence effect can be superimposed in sequence. When the shock wave is transmitted to the last cartridge, it has been greatly weakened after multiple turbulences. In addition, the locking structure formed by the connecting ribs being completely embedded in the connecting grooves effectively enhances the vibration resistance and impact resistance of the entire charge column.

[0022] Furthermore, the connecting cylinder 2-1 and the outer sleeve 2-3 are slidably connected. The inner wall of the outer sleeve 2-3 is provided with a groove along its axial direction, and the outer wall of the connecting cylinder is provided with a slider that mates with the groove. The connecting cylinder 2-1 can slide along the axial direction of the outer sleeve 2-3, and a spring 2-6 is provided between the two connecting cylinders. The two connecting cylinders are slidably connected, and a spring 2-6 is placed between them. By placing the spring 2-6 between the two connecting cylinders 2-1, the entire charge structure is pre-tightened from a loose assembly into a gapless rigid whole. This continuous axial pre-tightening force completely eliminates the connection gaps that may be caused by tolerances or vibrations, thereby ensuring that the detonation wave can be transmitted almost without damage through mechanical impact. Ultimately, this greatly improves the system's reliability, fault tolerance, and the uniformity and predictability of the blasting effect under complex working conditions.

[0023] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the present utility model. Any simple modifications, alterations, or equivalent structural changes made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A gun barrel charging structure, characterized in that, include: The cartridge (1) includes a cylindrical section (1-1) and a frustum section (1-2) connected to both ends of the cylindrical section (1-1). The cross-sectional area of ​​the frustum section (1-2) gradually decreases in the direction away from the cylindrical section (1-1). The end of the frustum section (1-2) away from the cylindrical section (1-1) is sealed. A first spiral turbulence groove (1-3) for turbulenting shock waves is provided on the outer wall of the cylindrical section (1-1). Air separator (2) includes an outer sleeve (2-3), with connecting cylinders (2-1) at both ends of the outer sleeve (2-3), and the inner cavity of the connecting cylinder (2-1) is configured with a frustum-shaped cavity (2-2) that cooperates with the frustum-shaped section cylinder (1-2).

2. The gun barrel charging structure according to claim 1, characterized in that, The first spiral turbulence channel (1-3) includes two side walls and an arc-shaped channel bottom disposed between the two side walls.

3. The gun barrel charging structure according to claim 1, characterized in that, The outer wall of the outer sleeve (2-3) is provided with a second spiral turbulence groove (2-4) for turbulenting the shock wave.

4. The gun barrel charging structure according to claim 3, characterized in that, The second spiral turbulence channel (2-4) includes two parallel sidewalls and a rectangular channel bottom disposed between the two sidewalls.

5. The gun barrel charging structure according to claim 1, characterized in that, The outer wall of the frustum section (1-2) is provided with a plurality of connecting ribs (1-4), which are arranged in a ring. The inner wall of the connecting cylinder (2-1) is provided with a connecting groove (2-5) that mates with the connecting ribs (1-4).

6. The gun barrel charging structure according to claim 1, characterized in that, The connecting cylinder (2-1) is slidably connected to the outer sleeve (2-3), the connecting cylinder (2-1) can slide along the axial direction of the outer sleeve (2-3), and a spring (2-6) is provided between the two connecting cylinders.

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