Auxiliary preparation tool for blasting cartridge

Abstract

A blasting cartridge auxiliary preparation tool comprises a cartridge containing barrel with the hollow interior and one open end, a corresponding baffle is arranged on the outer side of the open end of the cartridge containing barrel, and an adjusting push rod opposite to the baffle is arranged at the closed end of the cartridge containing barrel; the medicine containing cylinder comprises a hollow cylinder body with one end open, a corresponding sliding block is arranged in an inner cavity of the cylinder body, a corresponding bottom plate is arranged below the cylinder body, the side end, corresponding to the opening direction of the cylinder body, of the bottom plate extends outwards along the axis of the cylinder body to form a guide plate, and a guide groove parallel to the axis of the cylinder body is formed in the middle of the top face of the guide plate. The bottom end of the baffle is installed on the guide rod in a sliding mode, a connecting hole is formed in the side wall, opposite to the baffle, of the closed end of the barrel, the adjusting push rod comprises a rod body and a push handle, one end of the rod body penetrates through the connecting hole to be connected to the corresponding face of the sliding block, and the push handle is arranged at the other end, opposite to the sliding block, of the rod body. The explosive cutting precision is higher, the quality of manufactured cartridges is better, the performance is more stable, and the production error rate is smaller.

Description

Technical Field

[0001] This utility model belongs to the field of explosives packaging technology, and in particular relates to an auxiliary preparation tool for the production of tunnel shaped charge smooth explosive rolls. Background Technology

[0002] In tunnel construction, shaped charge blasting technology has become increasingly popular in recent years to improve the blasting effect of smooth tunnel surfaces. When using shaped charge blasting, the explosive is first cut into sections, and then shaped charge cartridges are made using a shaped charge tube device. Shaped charge cartridges are divided into bottom-hole cartridges and intermediate cartridges. Bottom-hole cartridges use a single piece of explosive; during production, one end of the explosive is cut off, and then the shaped charge tube is inserted into the explosive until explosive overflows from the opening of the shaped charge tube. For intermediate cartridges, the explosive is cut in half, and the shaped charge tube is inserted into the explosive until explosive overflows from the opening of the shaped charge tube. Currently, the production of explosive cartridges relies entirely on manual operation. The performance of the cartridges is greatly affected by the operator's skill. Issues such as uneven grip strength or lack of patience can affect the success rate of cartridge production (most explosives are emulsion explosives, which are highly lubricating and prone to sticking to the hands; once they stick, it will seriously affect the subsequent cartridge production). In addition, the explosives are relatively soft, and their diameter is not much different from that of the shaped charge tube, resulting in a high error rate during production. Explosives are frequently damaged by squeezing the shaped charge tube or by squeezing them by hand. These situations not only affect the performance and quality of the finished cartridges but also reduce production efficiency. Numerous operational errors generate a lot of waste products, increasing the production cost of the cartridges. Utility Model Content

[0003] The purpose of this invention is to provide an auxiliary preparation tool for the production of shaped charge cartridges, in order to solve the technical problem that the production of existing cartridges mainly relies on manual operation by workers and has a high error rate.

[0004] To achieve the above objectives, the specific technical solution of this utility model is as follows:

[0005] An auxiliary tool for preparing explosive cartridges includes a hollow cartridge with one open end, a corresponding baffle on the outside of the open end, and an adjusting push rod opposite to the baffle on the closed end.

[0006] The medicine container includes a hollow cylinder with one open end. A corresponding slider is provided in the inner cavity of the cylinder, and the two are slidably connected. A corresponding base plate is provided below the cylinder, and the slider is fixedly connected to the base plate. The side end of the base plate corresponding to the opening direction of the cylinder extends outward along the axis of the cylinder to form a guide plate. A guide groove parallel to the axis of the cylinder is provided in the middle of the top surface of the guide plate. A corresponding guide rod is provided in the guide groove. A through hole corresponding to the guide rod is provided at the bottom of the baffle. The bottom end of the baffle is slidably installed on the guide rod through the through hole. A connecting hole is provided on the closed end side wall of the cylinder opposite to the baffle. The adjusting push rod includes a rod body and a push handle. One end of the rod body passes through the connecting hole and is connected to the corresponding surface of the slider. The push handle is provided at the other end of the rod body opposite to the slider.

[0007] Furthermore, the rod and the connecting hole are connected together by corresponding threads, and the rod and the slider are rotatably connected.

[0008] Furthermore, the cylindrical body is made of a transparent material with stable properties.

[0009] Furthermore, multiple graduations are evenly distributed on the top surface of the cylinder from left to right.

[0010] Furthermore, a tool knife corresponding to the inner cavity of the medicine container is provided above the medicine container. The tool knife is mounted on the top of the medicine container via a tool holder. The bottom end of the tool holder is slidably connected to the bottom plate of the medicine container. Multiple cutting grooves corresponding to the scale are evenly distributed on the top wall of the medicine container. The tool knife can move left, right, up and down above the medicine container under the drive of the tool holder.

[0011] Furthermore, the base plate has a pair of corresponding slides on both sides parallel to the cylinder axis. The knife holder includes a gantry frame, a sliding plate, and a support column. The sliding plate and the support column are both arranged in pairs on the left and right sides of the medicine container. The corresponding two sliding plates are respectively located on the left and right sides of the base plate, and their inner ends are respectively inserted into the slides on the corresponding sides of the base plate, and the two are slidably connected. The bottom end of the support column is fixedly connected to the outside of the corresponding sliding plate. The support column has a guide hole corresponding to the gantry frame column. The bottom end of the column is inserted into the guide hole on the corresponding side. A corresponding pressure spring is provided in the guide hole below the column. With the assistance of the pressure spring, the gantry frame is mounted on the top of the two support columns through its column. The tool knife is connected to the top plate of the gantry frame through the connecting block at its top.

[0012] Furthermore, a pressure handle is provided above the tool holder, and the pressure handle is fixedly installed on the top plate.

[0013] Furthermore, the tool knife has a pair of corresponding guard plates on both sides, and each guard plate and the cylinder have a corresponding crossbeam. The bottom end of the guard plate is connected to the crossbeam, and the two ends of the crossbeam are respectively connected to the support frame on both sides of the cylinder. The middle of the guard plate has a vertical groove corresponding to the upper pressure hand of the tool holder.

[0014] Furthermore, the adjusting push rod and the medicine container are detachably connected. The middle of the side of the slider corresponding to the rod body is provided with a stepped inner groove with an inner radial dimension smaller than that of the outer step. A corresponding pressure bearing is installed in the inner step of the inner groove. A pressure ring with an outer diameter larger than that of the inner step is provided in the outer step. The inner diameter of the pressure ring is larger than that of the inner ring of the pressure bearing in the inner step. A connecting plate fixedly connected to the pressure bearing is provided in the inner ring of the pressure ring. The end of the adjusting push rod abuts against the connecting plate.

[0015] This utility model of an auxiliary tool for preparing explosive cartridges has a simple structure and is easy to manufacture. It is more convenient to carry, move, and transport, reducing the chance of workers directly contacting explosives and minimizing the impact of manual operation on the performance of the cartridges. It has higher precision in cutting explosives, produces better quality cartridges with more stable performance, has a lower production error rate, higher production efficiency, lower waste rate, and more controllable production costs, thus improving the economic benefits of explosive cartridge production and processing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0017] Figure 2 This is Embodiment 1 of the present utility model. Figure 1 Right half-section view;

[0018] Figure 3 This is Embodiment 1 of the present utility model. Figure 1 Internal structural sectional view;

[0019] Figure 4 This is a top view of the medicine container in Embodiment 1 of this utility model;

[0020] Figure 5 This is a partial sectional view of the connection between the adjusting push rod and the medicine container in Embodiment 2 of this utility model;

[0021] The markings in the diagram are as follows: 1. Medicine container; 11. Container body; 12. Slider; 13. Base plate; 14. Scale; 15. Tool knife; 16. Cutting groove; 17. Slide rail; 18. Inner groove; 2. Baffle; 21. Guide plate; 22. Guide groove; 23. Guide rod; 3. Adjusting push rod; 31. Rod body; 32. Push handle; 33. Pressure bearing; 34. Pressure ring; 35. Connecting plate; 4. Tool holder; 41. Gantry frame; 42. Slide plate; 43. Support column; 44. Pressure spring; 45. Handle; 46. Guard plate; 47. Crossbeam; 48. Vertical groove. Detailed Implementation

[0022] To better understand the purpose, structure, and function of this utility model, the following description, in conjunction with the accompanying drawings, provides a more detailed account of an auxiliary tool for preparing explosive charges.

[0023] Example 1

[0024] like Figure 1-4 As shown, the auxiliary tool for preparing explosive cartridges of this utility model includes a cartridge 1, an adjusting push rod 3, and a baffle 2. The cartridge 1 is a hollow cylinder with one open end. The baffle 2 is located on the outside of its open end. The adjusting push rod 3 is located on the closed end side wall of the cartridge 1 opposite to the baffle 2. In use, the explosive to be processed and the corresponding shaped charge tube are placed in the cartridge 1. With the assistance of the baffle 2, the adjusting push rod 3 applies force to the explosive and the shaped charge tube simultaneously. Under the action of the force, the shaped charge tube is inserted into the explosive.

[0025] The medicine container 1 includes a horizontally arranged cylinder 11. In this embodiment, the cylinder 11 is hollow inside with an opening at the right end. A corresponding slider 12 is provided in the inner cavity of the cylinder 11, and the two are slidably connected. A connecting hole is provided in the middle of the left side wall of the cylinder 11. The adjusting push rod 3 includes a rod body 31 and a push handle 32. The right end of the rod body 31 passes through the connecting hole and is connected to the left side of the slider 12. The push handle 32 is located at the left end of the rod body 31, which makes it easier for the operator to apply force to the adjusting push rod 3. In this embodiment, the rod body 31 and the connecting hole are connected to each other by corresponding threads. Together, the rod 31 and the slider 12 are rotatably connected. This arrangement makes it easier for operators to control the force of the adjusting push rod 3, allowing for more precise control of the distance the adjusting push rod 3 pushes the slider 12 within the cylinder 11, thereby achieving more precise cutting of the explosive. A corresponding base plate 13 is provided below the cylinder 11, and the bottom surface of the cylinder 11 is fixedly connected to the top surface of the base plate 13. The right end of the base plate 13 extends along the axis of the cylinder 11 to form a guide plate 21. A guide groove parallel to the axis of the cylinder 11 is provided in the middle of the top surface of the guide plate 21. 22. A corresponding guide rod 23 is provided in the guide groove 22. The bottom of the baffle 2 is provided with a through hole corresponding to the guide rod 23. The bottom end of the baffle 2 is slidably installed on the guide rod 23 in the guide groove 22 through the through hole. The baffle 2 can slide left and right along the guide rod 23 on the right side of the cylinder 11. The guide groove 22 and the guide rod 23 cooperate to provide guidance for the left and right movement of the baffle 2. At the same time, the design of the guide rod 23 can also prevent the baffle 2 from tilting to the left or right during movement, prevent the shaped charge tube from being inserted off-center, and reduce the probability of explosive deformation. This embodiment In the example, the baffle 2 is detachably and fixedly installed on the guide rod 23. The right end of the guide rod 23 is provided with a threaded screw, and the left end of the screw is fixedly connected to the guide rod 23. The screw is provided with a corresponding nut. The radial dimension of the nut is larger than the size of the through hole at the bottom of the baffle 2, which can prevent the baffle 2 from coming off the guide rod 23 during operation. In this embodiment, the cylinder 11, the adjusting push rod 3 and the baffle 2 are coaxially corresponding. This arrangement makes it easier to apply force to the shaped charge tube to insert it into the explosive, so as to avoid misalignment, improve the quality of the finished explosive cartridge, and reduce the error rate of explosive cartridge production.

[0026] Furthermore, in this embodiment, the left side of the slider 12 is provided with a stepped groove with an inner radial dimension larger than that of the outer side, and the right end of the rod 31 is provided with a boss corresponding to the stepped groove of the slider 12. The boss is rotatably connected to the slider 12 through the correspondence between the boss and the stepped groove, so that the rod 31 can drive the slider 12 to slide left and right in the inner cavity of the cylinder 11.

[0027] Furthermore, the cylinder 11 is made of a stable transparent material, such as glass or PVC. In this embodiment, the explosive cylinder 1 is made of PVC material, which is stable and does not easily react with explosives. At the same time, the transparent material makes it easier for staff to observe the insertion of the explosives into the shaped charge tube.

[0028] Furthermore, multiple scales 14 are evenly distributed from left to right on the top surface of the cylinder 11, making it easier for staff to observe the length of the explosive and the relative displacement of the shaped charge tube and the explosive.

[0029] Furthermore, a tool knife 15 corresponding to the inner cavity of the cylinder 11 is provided above the explosive container 1. The tool knife 15 is mounted above the cylinder 11 by a tool holder 4. The bottom end of the tool holder 4 is slidably connected to the bottom plate 13 below the cylinder 11. Multiple cutting grooves 16 are evenly distributed on the top wall of the cylinder 11. Multiple cylinders 11 correspond one-to-one with multiple scales 14 on the top surface of the cylinder 11. The depth of the cutting groove 16 is not less than the radius of the cylinder 11, and its width is greater than the thickness of the tool knife 15. The tool knife 15 can move left, right, up and down above the cylinder 11 under the drive of the tool holder 4. When in use, the tool knife 15 is first moved by the tool holder 4 to the cutting groove 16 above the corresponding scale 14. At this time, the tool knife 15 moves downward under the drive of the tool holder 4 and enters the inner cavity of the cylinder 11 through the cutting groove 16, so as to cut the explosive in the inner cavity of the cylinder 11 into the required length.

[0030] Furthermore, a pair of corresponding slide rails 17 are provided on the left and right sides of the base plate 13. The knife holder 4 is slidably installed above the medicine container 1 via the slide rails 17. The knife holder 4 includes a portal frame 41, a sliding plate 42, and a support column 43. The sliding plate 42 and the support column 43 are both arranged in pairs on the left and right sides of the medicine container 1. The two corresponding sliding plates 42 are respectively located on the left and right sides of the base plate 13. The inner ends of the two sliding plates 42 are respectively inserted into the slide rails 17 on the corresponding sides of the base plate 13, and the two are slidably connected. The bottom ends of the two support columns 43 are fixedly connected to the outer side of the top surface of the corresponding sliding plate 42. The portal frame 41 is supported above the two support columns 43 via its uprights. The tool knife 15 is supported above the cylinder 11 via the portal frame 41. The tool knife 15 is connected to the middle of the bottom surface of the top plate of the portal frame 41 via its top connecting block. The two uprights of the portal frame are the guide columns for its vertical movement. The support column 43 has an upward-opening guide hole, which corresponds to the column on the same side of the portal frame 41. The bottom end of the column is inserted into the guide hole. A corresponding pressure spring 44 is installed in the guide hole below the column. The pressure spring 44 provides support force for the portal frame 41 above it. During operation, the operator applies pressure to the portal frame 41. Under pressure, the portal frame 41 drives the tool knife 15 to move downward. After the operator finishes applying pressure to the top plate, the top plate can return to the initial position through the elastic force of the pressure spring 44. This reduces the time and process of manually resetting the tool knife 15, making the auxiliary preparation tool more time-saving, labor-saving, and convenient to use. During the up-and-down movement of the tool knife 15 by the portal frame 41, the guide holes of the column of the portal frame 41 and the support column 43 cooperate with each other to provide guidance.

[0031] Furthermore, a pressure hand 45 is provided above the tool holder 4. The pressure hand 45 is fixedly installed in the middle of the top surface of the top plate, which makes it more convenient for the staff to apply pressure to the tool holder 4.

[0032] Furthermore, a pair of corresponding guard plates 46 are provided on the left and right sides of the tool knife 15. The gap between the two guard plates 46 is greater than the width of the top plate. Each guard plate 46 has a corresponding crossbeam 47 at its bottom. The crossbeam 47 is located above the cylinder 11, and its two ends are fixedly connected to the inner sides of the support frames on both sides of the cylinder 11. The bottom end of the guard plate 46 is fixedly installed on the top surface of the crossbeam 47. The middle part of the guard plate 46 has a vertical groove 48 corresponding to the upper end of the pressure handle 45 of the knife holder 4, which facilitates the pressure handle 45 to apply force to the tool knife 15 to make it move downward, so that the guard plate 46 does not affect the cutting of explosives by the tool knife 15. Driven by the support frame, it moves above the explosive container 1 with the left and right movement of the tool knife 15. The setting of the guard plate 46 can prevent external personnel from inserting their fingers under the tool knife 15, thereby reducing the probability of it causing danger.

[0033] In use, firstly, select the inner cavity of the cylinder 11 and its corresponding auxiliary preparation tool according to the required explosive specifications; then, insert the explosive into the inner cavity of the cylinder 11, with its bottom against the right side wall of the slider 12. Under normal conditions, the slider 12 is positioned near the closed end of the inner cavity of the cylinder 11, facilitating the insertion of the explosive. According to the markings 14 on the cylinder 11, adjust the tool knife 15 to the appropriate marked position, ensuring the distance between it and the slider 12 matches the required explosive length. Then, apply force to the tool holder 4 using the pressure handle 45, causing it to drive the tool knife 15 to cut the explosive. After cutting, the tool holder 4 automatically returns the tool knife 15 to its initial position. At this point, apply force to the adjusting push rod 3. Due to the inherent characteristics of its threaded connection with the left side wall of the cylinder 11, its relative position to the cylinder 11 gradually changes with rotation. Rotate the adjusting push rod... Rod 3 is moved to the right side of cylinder 11. Under its action, slider 12 pushes the explosive in the inner cavity of cylinder 11 to move synchronously to the right opening of cylinder 11 until the excess part of the explosive cut on the right side is pushed out of the inner cavity of cylinder 11. At this time, the remaining explosive in cylinder 11 is the explosive body that needs to be combined with the shaped charge tube. The shaped charge tube is placed between cylinder 11 and baffle 2. The position of the shaped charge tube is adjusted so that its insertion end corresponds to the explosive body. At this time, a force is applied to the left to baffle 2, which can push the shaped charge tube to be gradually inserted into the explosive body. During this process, guide plate 21 provides guidance for the movement of the shaped charge tube. Cylinder 11 maintains the shape of the explosive body and reduces the probability of its deformation. Stop when the shaped charge tube is inserted into the appropriate position of the explosive body. Move baffle 2 to move it back to the right side of guide plate 21. At this time, push rod 3 is adjusted to push out the explosive body. The shaped charge tube has been inserted into the explosive body, and the production of the explosive roll is completed.

[0034] This utility model of an auxiliary tool for preparing explosive cartridges reduces the chance of direct contact between hands and explosives during cartridge processing through the cooperation of multiple mechanical components. It also reduces the impact of worker operating skills on cartridge performance. Through the positioning of scale 14 and the cooperation of adjusting push rod 3, the cutting accuracy of explosives is improved. The cartridges produced are of better quality, more stable in performance, have a lower error rate, higher production efficiency, lower scrap rate, more controllable production costs, and better economic benefits. Moreover, its structure is simple and easy to obtain and manufacture.

[0035] Example 2

[0036] like Figure 5As shown, based on Embodiment 1, further optimization is made. The adjusting push rod 3 and the charge cartridge 1 are detachably connected. The middle of the left side of the slider 12 is provided with a stepped inner groove 18. The inner groove includes an inner step and an outer step. The radial dimension of the inner step is smaller than that of the outer step. A corresponding pressure bearing 33 is installed in the inner step. A corresponding pressure ring 34 is provided in the outer step. The outer diameter of the pressure ring 34 is larger than the radial dimension of the inner step, and its inner diameter is larger than the inner ring size of the pressure bearing 33 in the inner step. A connecting plate 35 is provided in the inner ring of the pressure ring 34. The right end face of the connecting plate 35 near the outer ring is fixedly connected to the left end face of the pressure bearing 33 near the inner ring. In use, the right end of the adjusting push rod 3 passes through the connecting hole on the left side wall of the charge cartridge 1 and abuts against the left side face of the connecting plate 35. It applies force to the slider 12 through the connecting plate 35 and the pressure bearing 33, thereby causing it to move the explosive at its right end toward the shaped charge tube at the right outlet end of the charge cartridge 1.

[0037] In this embodiment, the detachable connection between the adjusting push rod 3 and the explosive cartridge 1 reduces the axial space requirement of the explosive cartridge preparation tool when carried, making it more convenient to carry and move. The pressure bearing 33 reduces the possibility that the slider 12 may rotate when the adjusting push rod 3 pushes the slider 12 to move, thereby reducing the possibility that the slider 12 may cause the left end of the explosive to rotate, and further reducing the possibility that the explosive may be damaged due to shape change.

[0038] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. An auxiliary tool for preparing a blasting charge, characterized in that, It includes the medicine containing barrel (1) that hollow one end opens, its open end outside is equipped with corresponding baffle (2), its closed end is equipped with the adjusting push rod (3) opposite with baffle (2); The medicine containing barrel (1) includes the hollow barrel (11) that one end opens, the inner chamber of barrel (11) is equipped with corresponding slider (12), and the sliding connection between them, the lower side of barrel (11) is equipped with corresponding bottom plate (13), which is fixedly connected on the bottom plate (13), the side end of bottom plate (13) corresponding with the opening direction of barrel (11) extends along the axis of barrel (11) and forms guide plate (21) outward, the top surface of guide plate (21) is equipped with guide slot (22) parallel to the axis of barrel (11), the guide slot (22) is equipped with corresponding guide rod (23), the bottom end of baffle (2) is slidingly installed on the guide rod (23), the sidewall of closed end of barrel (11) opposite with baffle (2) is equipped with connecting hole, adjusting push rod (3) includes rod body (31) and push handle (32), one end of rod body (31) is connected on the corresponding surface of slider (12) through connecting hole, push handle (32) is arranged on the other end of rod body (31) opposite with slider (12).

2. The blasting charge auxiliary preparation tool according to claim 1, characterized in that, The rod body (31) and connecting hole are connected together through corresponding threads, and the rod body (31) and slider (12) are rotatably connected.

3. The blasting charge auxiliary preparation tool according to claim 1, characterized in that, The barrel (11) is made of transparent material with stable properties.

4. The blasting charge auxiliary preparation tool according to claim 1, characterized in that, The top surface of barrel (11) is uniformly distributed with a plurality of scales (14).

5. The tool for assisting in the preparation of a blasting charge according to claim 4, characterized in that, The upper side of medicine containing barrel (1) is equipped with tool cutter (15) corresponding with the inner chamber of barrel (11), tool cutter (15) is erected above barrel (11) through cutter holder (4), the bottom end of cutter holder (4) is slidingly connected on the bottom plate (13) of medicine containing barrel (1), the top wall of barrel (11) is uniformly distributed with a plurality of feed grooves (16) corresponding with scales (14) one by one, tool cutter (15) can move left and right, up and down above barrel (11) under the driving of cutter holder (4).

6. The tool for assisting in the preparation of a blasting charge according to claim 5, characterized in that, The two sides of bottom plate (13) parallel to the axis of barrel (11) are equipped with a pair of corresponding slideways (17), cutter holder (4) includes door type frame (41), sliding plate (42) and support column (43), wherein the sliding plate (42) and support column (43) are both arranged in pairs on the left and right sides of medicine containing barrel (1), the inner side end of corresponding two sliding plates (42) is respectively inserted into the slideway (17) of corresponding side of bottom plate (13), and the sliding connection between them, the bottom end of support column (43) is fixedly connected on the outer side of corresponding side sliding plate (42), the support column (43) is equipped with guide hole corresponding with the column of door type frame (41), the bottom end of column is inserted into the guide hole of corresponding side, the guide hole below column is equipped with corresponding pressure spring (44), door type frame (41) is erected above two support columns (43) under the assistance of pressure spring (44) through its column, tool cutter (15) is connected on the top plate of door type frame (41) through the connecting block on its top.

7. The tool for assisting in the preparation of a blasting charge according to claim 6, characterized in that, The upper side of cutter holder (4) is equipped with pressing hand (45), which is fixedly installed on the top plate.

8. The blasting charge auxiliary preparation tool according to claim 6, characterized in that, Two sides of the tool cutter (15) are provided with a pair of corresponding guards (46), each guard (46) and the barrel (11) are provided with corresponding cross beams (47), the bottom end of the guard (46) is connected to the cross beam (47), the two ends of the cross beam (47) are connected to the support frames on the two sides of the barrel (11), the middle part of the guard (46) is provided with a vertical groove (48) corresponding to the upper end of the handle (45) of the cutter holder (4).

9. The blasting charge auxiliary preparation tool according to claim 1, characterized in that, The adjusting push rod (3) and the medicine cylinder (1) are detachably connected, the middle part of the side surface corresponding to the slider (12) and the rod body (31) is provided with a stepped inner groove (18) with the inner step radial dimension smaller than the outer step, the inner step of the inner groove (18) is provided with a corresponding pressure bearing (33), the outer step is provided with a pressure ring (34) with the outer diameter larger than the inner step radial dimension, the inner diameter of the pressure ring (34) is larger than the inner ring size of the pressure bearing (33) in the inner step, the inner ring of the pressure ring (34) is provided with a connecting plate (35) fixedly connected with the pressure bearing (33), and the end of the adjusting push rod (3) abuts against the connecting plate (35).

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