A quick cutting device for detonating cord used in blasting engineering

Abstract

The utility model discloses a detonating cord quick cutting device for blasting engineering, including casing and support rod, the casing is slidably arranged with the guide block, the spring is arranged between the upper end surface of guide block and the casing top surface, the support rod upper end slidingly penetrates the casing top surface and is connected with the ring, the lower end of guide block is provided with the mounting seat, and the mounting seat is provided with the locating column for installing the blade, the utility model relates to the technical field of blasting construction, and the ring is used as the force application accessory, the finger is inserted into the ring, the detonating cord is inserted into the casing side wall gap position and is tensioned, the ring is pressed and the guide block is pushed down through the support rod, and then the cutting head is pushed to cut the detonating cord, when needing to replace the blade, only needs to take down the protective cover, holds the ring and pushes the blade to the outside of casing, takes down the old blade and installs the new blade, and then the protective cover is buckled, compact structure, convenient operation.

Description

Technical Field

[0001] This utility model relates to the field of blasting construction technology, specifically a rapid cutting device for detonating cord in blasting engineering. Background Technology

[0002] Detonating cord, as a stable and reliable detonating device, is widely used in tunnels, open-pit smooth blasting, pre-splitting blasting, and interval blasting. According to the blasting safety regulations (BG6722-2014) regarding the on-site processing requirements for detonating cord, "sharp knives should be used to cut detonating cord, and scissors must not be used." Therefore, in on-site operations, workers usually use utility knives or blades to cut it. During the cutting process, the blade is exposed, and the surface of the detonating cord itself is relatively smooth, making it very easy to slip and injure personnel. In addition, utility knife blades are thin and exposed, which is not only inconvenient to carry, but also prone to rusting, breaking and splashing when encountering hard objects, which can easily lead to safety accidents. Chinese patent application CN202421252286.8 discloses a detonating cord cutting device, which uses a finger to slide a support plate downwards into a finger groove to push a blade to cut the detonating cord. However, this solution relies on the friction between the finger and the support plate to control the support plate, which is inconvenient to apply force. It is not only easy to slip but may also cause friction damage to the finger. Moreover, the blade is difficult to replace, resulting in poor practicality. In view of this, this case was developed after in-depth research into the above problems. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a rapid cutting device for detonating cord in blasting engineering, which solves the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a rapid cutting device for detonating cord in blasting engineering, comprising a housing and a support rod. A guide block is slidably disposed within the housing, and a spring is disposed between the upper end face of the guide block and the top surface of the housing. The upper end of the support rod slidably passes through the top surface of the housing and is connected to a ring. A mounting base is disposed at the lower end of the guide block, and a positioning post is disposed on the mounting base for mounting a blade. A pressure plate is fastened to the outer side of the blade, and both ends of the pressure plate are snapped and fixed to the mounting base. A notch is provided on the side wall of the housing, and a protective cover is disposed at the lower end of the housing. The protective cover is assembled and connected to the housing by a snap-fit ​​locking component.

[0005] The mounting base is symmetrically provided with L-shaped locking blocks at both ends, and the pressure plate is provided with locking grooves at both ends corresponding to the L-shaped locking blocks.

[0006] The lower end face of the aforementioned housing is provided with a stepped boss, and the upper opening of the protective cover is provided with a stepped groove corresponding to the stepped boss.

[0007] The aforementioned locking component includes a fixing pin, a locking pin, and a locking plate. The fixing pin is symmetrically arranged on both sides of the lower end of the housing, and the locking pin is symmetrically arranged on both sides of the upper end of the protective cover and corresponds to the fixing pin. The upper end of the locking plate is rotatably connected to the fixing pin, and a slot is provided on the side of the locking plate, which engages with the locking pin.

[0008] The aforementioned shell and protective shell are both high-performance rigid plastic shell structures.

[0009] The aforementioned blade is made of high-hardness steel with a single-sided blade and has an assembly hole on the upper part for insertion into the positioning post.

[0010] This utility model provides a rapid cutting device for detonating cord in blasting engineering. It has the following advantages: This rapid cutting device for detonating cord in blasting engineering uses a ring as a force-applying attachment. Inserting a finger into the ring causes the detonating cord to extend into the notch on the side wall of the casing and become tensioned. Pressing the ring pushes the guide block downwards via the support rod, which in turn pushes the cutter head to cut the detonating cord. After cutting, the guide block returns to its original position under the restoring force of the spring. When the blade needs to be replaced, simply remove the protective cover, press the ring to push the blade out to the outside of the casing, open the pressure plate, remove the old blade, install the new blade, re-tighten the pressure plate, and then fasten the protective cover. The device is compact and easy to operate. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of a rapid cutting device for detonating cord used in blasting engineering, as described in this utility model.

[0012] Figure 2 This is a front view cross-sectional structural diagram of a rapid cutting device for detonating cord used in blasting engineering, as described in this utility model.

[0013] Figure 3 This is an isometric structural diagram of the mounting base position described in this utility model.

[0014] Figure 4 This is an isometric structural diagram of the blade position described in this utility model.

[0015] Figure 5 This is an isometric structural diagram of the pressure plate described in this utility model.

[0016] In the diagram: 1. Housing; 2. Guide block; 3. Spring; 4. Support rod; 5. Finger ring; 6. Mounting base; 7. Positioning pin; 8. Blade; 9. Pressure plate; 10. Notch; 11. Protective cover; 12. L-shaped locking block; 13. Locking groove; 14. Fixing pin; 15. Locking pin; 16. Connecting plate. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example: Refer to the appendix of the instruction manual Figures 1-5 As can be seen, this application specifically designs a rapid cutting device for detonating cord in blasting engineering, including a housing 1 and a support rod 4. A guide block 2 is slidably disposed inside the housing 1. A spring 3 is disposed between the upper end face of the guide block 2 and the top surface of the housing 1. The upper end of the support rod 4 slides through the top surface of the housing 1 and is connected to a ring 5. A mounting base 6 is disposed at the lower end of the guide block 2. A positioning post 7 is disposed on the mounting base 6 for mounting a blade 8. A pressure plate 9 is fastened to the outside of the blade 8. The two ends of the pressure plate 9 are snapped and fixed to the mounting base 6. A notch 10 is opened on the side wall of the housing 1. A protective cover 11 is disposed at the lower end of the housing 1. The protective cover 11 is assembled and connected to the housing 1 by a snap-fit ​​locking component. This blasting project uses a rapid detonating cord cutting device. A finger ring 5 serves as the force-applying attachment. Inserting a finger into the ring 5 causes the detonating cord to extend into the notch 10 on the side wall of the housing 1 and become tensioned. Pressing the ring 5 pushes the guide block 2 downwards via the support rod 4, which in turn pushes the cutter head to cut the detonating cord. After cutting, the guide block 2 returns to its original position under the restoring force of the spring 3. When the blade 8 needs to be replaced, simply remove the protective cover 11, press the ring 5 to push the blade 8 out to the outside of the housing 1, open the pressure plate 9, remove the old blade 8, install the new blade 8, re-tighten the pressure plate 9, and then fasten the protective cover 11. The device is compact and easy to operate.

[0019] In the specific implementation process, as a preferred setting, the mounting base 6 is symmetrically provided with L-shaped locking blocks 12 at both ends, and the pressure plate 9 is provided with locking grooves 13 at both ends corresponding to the L-shaped locking blocks 12. The L-shaped locking blocks 12 are used to limit and fix the pressure plate 9, which facilitates the disassembly and installation of the pressure plate 9 and improves the convenience of replacing the blade 8.

[0020] In the specific implementation process, as a preferred configuration, the lower end face of the housing 1 is provided with a stepped boss, and the upper opening of the protective cover 11 is provided with a stepped groove corresponding to the stepped boss. Through plug-in connection, the connection stability between the housing 1 and the protective cover 11 is improved.

[0021] In specific implementation, as a preferred configuration, the above-mentioned locking components include a fixing pin 14, a locking pin 15, and a locking plate 16. The fixing pin 14 is symmetrically arranged on both sides of the lower end of the housing 1, and the locking pin 15 is symmetrically arranged on both sides of the upper end of the protective cover 11 and corresponds to the fixing pin 14. The upper end of the locking plate 16 is rotatably connected to the fixing pin 14, and the side of the locking plate 16 has a slot that engages with the locking pin 15. Through the mechanical locking between the locking plate 16 and the locking pin 15, the connection reliability between the housing 1 and the protective cover 11 is further improved.

[0022] In practice, as a preferred option, both the shell 1 and the protective shell are high-performance rigid plastic shell structures, making the overall structure lighter.

[0023] In the specific implementation process, as a preferred setting, the blade 8 is a high-hardness steel single-sided blade 8 with an assembly hole on the upper part for insertion with the positioning post 7. The high-hardness steel (such as 7CR17, hardness 58HRC) single-sided blade 8 has better toughness and wear resistance, and the positioning post 7 can make the blade 8 more firmly assembled.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and 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 appended claims and their equivalents.

Claims

1. A rapid cutting device for detonating cord in blasting engineering, comprising a housing and a support rod, characterized in that, A guide block is slidably disposed inside the housing. A spring is disposed between the upper end face of the guide block and the top surface of the housing. The upper end of the support rod slides through the top surface of the housing and is connected to the ring. A mounting base is disposed at the lower end of the guide block. A positioning post is disposed on the mounting base for mounting the blade. A pressure plate is fastened to the outside of the blade. Both ends of the pressure plate are snapped and fixed to the mounting base. A notch is opened in the side wall of the housing. A protective cover is disposed at the lower end of the housing. The protective cover is assembled and connected to the housing by a snap-fit ​​locking component.

2. The rapid cutting device for detonating cord in blasting engineering according to claim 1, characterized in that, The mounting base is symmetrically provided with L-shaped locking blocks at both ends, and the pressure plate is provided with locking grooves at both ends corresponding to the L-shaped locking blocks.

3. The rapid cutting device for detonating cord in blasting engineering according to claim 1, characterized in that, The lower end face of the housing is provided with a stepped protrusion, and the upper opening of the protective cover is provided with a stepped groove corresponding to the stepped protrusion.

4. The rapid cutting device for detonating cord in blasting engineering according to claim 1, characterized in that, The locking component includes a fixing pin, a locking pin, and a locking plate. The fixing pin is symmetrically arranged on both sides of the lower end of the housing, and the locking pin is symmetrically arranged on both sides of the upper end of the protective cover and corresponds to the fixing pin. The upper end of the locking plate is rotatably connected to the fixing pin, and a slot is provided on the side of the locking plate, which engages with the locking pin.

5. A rapid cutting device for detonating cord in blasting engineering according to claim 1, characterized in that, Both the housing and the protective shell are high-performance rigid plastic shell structures.

6. A rapid cutting device for detonating cord in blasting engineering according to claim 1, characterized in that, The blade is made of high-hardness steel single-sided blade and has an assembly hole on the upper part for insertion with the positioning post.

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