Method for breaking pneumatic impact quick-release fixing bolt and breaking device thereof

Abstract

The application provides a pneumatic impact quick-disconnecting fixing bolt breaking method and a breaking device thereof, and comprises the following steps: determining a target door body to be broken, and chiseling the four corners of the door frame outside the target door body; using a crowbar to flip the vertical door side strips on the left and right sides of the door frame; using a bolt detector to determine the positions of the fixing bolts in the door frame; using a pneumatic impact gun and a chisel to break the concrete near each fixing bolt to form a bolt breaking gap; replacing a crescent shovel working head to quickly disconnect each fixing bolt through each bolt breaking gap; and using a door body traction pulling device to pull out the target door body as a whole to complete the breaking. The application has no power limitation, further shortens the time required for breaking doors and windows, greatly improves the rescue efficiency, and is safe and reliable without power supply and with small action amplitude, and is suitable for special places such as explosion-proof, high-rise, narrow space and the like.

Description

Technical Field

[0001] This application relates to the field of security door and security window breaking technology, and in particular to a pneumatic impact quick-break fixing bolt breaking method and breaking device. Background Technology

[0002] With increasing public awareness of security, the coverage rate of security doors and windows is constantly improving, now exceeding 89%. New standards stipulate that security doors must possess sufficient resistance to vandalism; when subjected to destructive testing using tools such as drills and pry bars on vulnerable areas, they must withstand at least 6 minutes without being opened. Statistics show that most security doors and windows used by ordinary residential users are currently classified as Class B. Therefore, the difficulty of fire emergency rescue in the event of an accident has significantly increased. With enhanced security awareness and improved living standards, the doors faced in rescue and breaching operations are becoming increasingly robust.

[0003] While existing traditional demolition devices on the market can achieve rapid dismantling of some targets, they have many drawbacks that cannot be solved in today's society. Among them, at least the problem of power supply is included. Most demolition devices rely on power, which leads to the technical problem that they cannot operate normally in scenarios where there is no power available, such as disasters, accidents, or field operations. Summary of the Invention

[0004] Exemplary embodiments of this application provide a method and device for breaking a fixed bolt by pneumatic impact, so as to achieve the technical effect that the breaking device can still operate normally without relying on a power source.

[0005] Exemplary embodiments of this application provide a method for breaking a pneumatically impacted, quick-break fixing bolt, comprising the following steps:

[0006] Once the target door is identified, a pneumatic impact gun and a chisel are used to cut open the four corners of the door frame outside the target door.

[0007] Use a crowbar to pry open the vertical door side strips on both sides of the door frame;

[0008] A bolt detector is used to determine the position of each fixing bolt inside the door frame;

[0009] A pneumatic impact gun and a chisel were used to break the concrete near each of the fixing bolts, creating a gap for breaking the bolts.

[0010] Replace the crescent-shaped shovel head and quickly break each of the fixing bolts through the gaps between the breaking bolts.

[0011] The target door is pulled out entirely using a door traction and extraction device, thus completing the demolition.

[0012] In one embodiment, a pneumatic impact gun and a chisel are used to cut the door frame outside the target door.

[0013] The step of chiseling and cutting at the four corners includes: the door frame is composed of a horizontal door side strip and a vertical door side strip, and the door frame is divided into two independent horizontal cover plates and two independent vertical cover plates by cutting at the junction of the horizontal cover plate and the vertical cover plate.

[0014] In one embodiment, the gap width of the demolition bolt is 1.1 cm to 2.0 cm.

[0015] Another aspect of this application discloses a pneumatic impact quick-break fixing bolt breaking device suitable for the aforementioned breaking method, comprising an impact quick-break assembly, the impact quick-break assembly comprising a pneumatic impact gun and a cutting chisel, and a power gas cylinder providing power thereto, and further comprising a bolt detector for detecting the fixing bolt, a crescent-shaped shovel head for replacement, a crowbar, and a door pulling device for pulling out the entire target door body.

[0016] In one embodiment, a foot-operated aluminum toolbox is also included for assembling and storing the various tools.

[0017] In one embodiment, two power gas cylinders are provided and configured to supply gas in parallel. The power gas cylinders impact a backpack breathing gas cylinder with a pressure of 30 MPa. The breathing gas cylinder includes a breathing gas path and a working gas path, and the working gas path is equipped with a one-way valve.

[0018] By adopting the above technical solution, the position of the fixing bolts inside the door frame is accurately located using a bolt detector. Powered by high-pressure gas, a pneumatic impact gun and chisel are used to cut open the junction of the horizontal and vertical cover plates on the side of the door frame, facilitating the prying off of the door cover plates. If the demolition personnel are not tall enough, they can stand on an aluminum alloy toolbox. A crowbar is used to lift the 2mm thick cover plates on both sides of the door frame. The bolt detector is used to accurately locate the position of the fixing bolts inside the door frame. A pneumatic impact gun and chisel are used to break through the concrete near the fixing bolts, creating a gap of 1.5-2.0cm. The crescent-shaped chisel head is replaced to quickly break the 6 fixing bolts. A door pulling device is used to pull the entire security door out, completing the demolition of the security door.

[0019] The beneficial effects of this application are as follows: By quickly breaking the fixing bolts of the security door, a rapid dismantling method for the security door is achieved. This method departs from the traditional approach of destroying the most robust part of the door, the lock, and instead focuses on breaking the connecting parts between the door and the wall, namely the fixing bolts. This new approach not only leads to faster dismantling and safer, quicker rescue, but also maximizes the protection of the door's main body, reduces economic losses, further shortens the time required for door and window dismantling, greatly improves rescue efficiency, and requires no power supply, involves minimal movement, and is safe and reliable.

[0020] Meanwhile, this equipment is also designed to meet the needs of portable, efficient, and suitable demolition in confined spaces in high-rise buildings. It abandons the traditional idea of ​​carrying additional high-power demolition tools and instead uses a backpack breathing apparatus commonly used in fire rescue as its power source. It is as precise and sharp as a scalpel, directly targeting the vital points of demolition, and does not require electricity throughout the process. It has a small range of motion and is safe and reliable. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0022] Figure 1 is a flowchart of a demolition method in one embodiment of this application;

[0023] Figure 2 is a diagram of the apparatus in one embodiment of this application;

[0024] Figure 3 is a schematic diagram of equipment connection and use in one embodiment of this application;

[0025] Figure 4 is a diagram showing the specific location of the fixing bolts in one embodiment of this application;

[0026] Figure 5 is a schematic diagram of the side cutting of the cover plate in one embodiment of this application;

[0027] Figure 6 is a schematic diagram of the door pulling device in use in one embodiment of this application. Detailed Implementation

[0028] Aside from power supply issues, most breaching devices rely on electricity, leading to technical problems such as inability to operate normally in scenarios without power, like disasters or field operations. Current breaching methods also objectively suffer from the following technical problems: In terms of time, traditional door-breaking takes over 5 minutes, easily missing the optimal rescue opportunity and failing to meet emergency rescue needs; in terms of size, most equipment is large and cumbersome, requiring multiple operators and thus consuming excessive physical energy; in terms of target, it is difficult to use for flexible breaching in confined spaces or against small targets; and it causes significant collateral damage, easily resulting in irreversible destruction of the device and its attachments. Therefore, a completely new approach and set of breaching tools are urgently needed.

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] As shown in Figures 1-3, a method for breaking a fixed bolt using pneumatic impact includes the following steps:

[0031] S102, determine the target door body to be breached, and use a pneumatic impact gun and chisel to cut open the four corners of the door frame outside the target door body;

[0032] S104, use a pry bar to pry open the vertical door side strips on the left and right sides of the door frame;

[0033] S106, A bolt detector is used to determine the position of each fixing bolt inside the door frame;

[0034] S108, using a pneumatic impact gun and a chisel to break the concrete near each of the fixing bolts, forming a bolt breakage gap;

[0035] S110, Replace the crescent-shaped shovel head and quickly break each of the fixing bolts through the gaps between the breaking bolts;

[0036] S112, the target door is pulled out as a whole using a door traction and pulling device to complete the demolition.

[0037] It should be noted that, as Figure 4 The image shows the location and number of fixing bolts used in the installation of most current door frames. According to current national standards, the doorway of a security door is typically 1.5-2.0 cm wider than the door itself. The door is usually secured to the left and right door frames within the doorway using six 10cm long, Φ10mm expansion bolts. The gap between the wall and the door frame is filled with polyurethane foam and covered with a 2mm thick cover plate. Because it primarily bears axial tensile forces and has poor shear resistance, it is susceptible to sudden breaking impacts.

[0038] As shown in Figure 5, the step of using a pneumatic impact gun and a chisel to cut open the four corners of the door frame outside the target door includes: the door frame is composed of horizontal and vertical door side strips; by cutting the junction of the horizontal and vertical door side strips, the door frame is divided into two independent horizontal door side strips and two independent vertical door side strips. The width of the gap between the demolition bolts is 1.1cm to 2.0cm.

[0039] A pneumatic impact quick-break fixing bolt breaking device suitable for the aforementioned breaking method includes an impact quick-break assembly, which includes a pneumatic impact gun and a cutting chisel, as well as a power gas cylinder to provide power for them. It also includes a bolt detector for detecting the fixing bolt, a crescent-shaped shovel head for replacement, a crowbar, and a door pulling device for pulling out the entire target door.

[0040] It should be noted that this also includes a foot-operated aluminum alloy toolbox for assembling and storing various tools. The outer shell of this aluminum alloy toolbox can withstand the weight of at least two adults. Two power gas cylinders are provided, configured for parallel gas supply. Even when the cylinder pressure is lower than the minimum working pressure of the impact gun, the remaining gas volume is still higher than the full capacity of a single cylinder, technically ensuring the operator's gas supply safety. The power gas cylinder is a backpack-type breathing gas cylinder with an impact pressure of 30 MPa. The breathing gas cylinder includes a breathing gas path and a working gas path, and the working gas path is equipped with a one-way valve.

[0041] The apparatus and method of this application are illustrated below with a specific example:

[0042] As shown in Figure 2, this device consists of a crowbar 6, an impact quick-break assembly 4, a double-cylinder compressed power gas cylinder 1, and a door traction and pull-out device 7. A pneumatic impact gun 2 and a chisel 3 are used to cut open the junction of the horizontal and vertical cover plates on the side of the door frame to facilitate the prying off of the door cover plates. If the demolition personnel are not tall enough, they can stand on an aluminum alloy toolbox 5.

[0043] Step 1: The user puts on the equipment, as shown in Figure 2.

[0044] Step 2: Use pry bar 6 to lift the 2mm back cover on both sides of the door frame.

[0045] Step 3: Use bolt detector 8 to accurately locate the position of fixing bolts 10-15 inside the door frame.

[0046] Step 4: Use a pneumatic impact gun 2 and a chisel to break the concrete near the fixing bolts 10-15, creating a gap of 1.1-2.0cm.

[0047] Step 5: Replace the crescent-shaped shovel head 9 and quickly break 6 fixing bolts 10-15.

[0048] Step 6: Use a portable door traction and pull-out device: 7.

[0049] In this embodiment, an exemplary portable door pulling device 7 is used. In actual operation, other similar pulling devices that can pull the door can be used. The portable door pulling device 7 shown in the figure includes an electromagnet 16, which is connected to a crossbar. It also includes support legs 17-18 that can abut against the door or other supporting surfaces. After the electromagnet 16 is energized, the support legs 17-18 are attracted to the upper part of the door. The support legs 17-18 and the electromagnet 16 are arranged in a triangle in the lower part of the door for support. When a person applies a vertical downward force to the crossbar 19 of the support connected to the electromagnet 16, the door rotates clockwise, and the entire security door can be pulled out, thus breaking into the security door, as shown in Figure 6. The bottom support point of the support legs 17-18 should be non-slip, which can be achieved by using rubber sleeves.

[0050] According to the above demolition process, it requires close cooperation between two people, and the ground around the door must be flat and free of obstacles.

[0051] In the initial stage, this demolition device uses a pry bar 6 to lift the back cover plate. Then, the bolt detector 8 senses the position of the fixing bolts 10-15 for the doors and windows. Powered by compressed gas from a backpack breathing air cylinder 1 with a filling pressure of 30 MPa, the device uses a pneumatic impact gun 2 and a chisel 3 to break through the concrete near the fixing bolts 10-15, creating a gap of 1.1-2.0 cm. Next, the crescent-shaped chisel head 9 is replaced, and the fixing bolts 10-15 for the doors and windows are quickly broken through the gap. This product further shortens the time required for door and window demolition, and in particular, it requires no power supply and poses no electrical ignition source hazard, making it suitable for explosion-proof and other special locations. The main performance characteristics of the equipment are as follows:

[0052] 1) Possesses rapid breaching capability for security doors: using backpack compressed air equipped with quick-connect interfaces.

[0053] Powered by a high-strength crowbar, a bolt detector positioning bolt, a high-toughness arc tool head, and a door tilting and dragging mechanism, the device can be easily and conveniently dismantled within 2 minutes, allowing for comfortable operation and quick dismantling of a Class A security door.

[0054] 2) It has the ability to quickly break through security windows and stainless steel screens on building exterior walls: using climbing facilities and equipment from the outside, the fixing bolts of the security window can be quickly cut through by pneumatic impact with a high-toughness arc tool head, so as to quickly break through the security window and create an opportunity for emergency rescue.

[0055] 3) It has three flexible operating modes: it can use a rounded tool head to quickly cut bolts, a pointed tool head to break through multiple layers of safety glass, and a full-blade tool head to cut iron sheets and plates to carry out fire rescue operations in three modes; under fire rescue conditions, it uses a double-cylinder backpack breathing cylinder as power, which ensures the safety of the operator and makes the demolition and rescue work convenient and fast while increasing the limited load.

[0056] 4) The device is designed for safety with multiple safety features: The gas cylinders use a parallel gas supply system. Even when the cylinder pressure is lower than the minimum working pressure of the impact gun, the remaining gas volume is still higher than the full capacity of a single cylinder, technically ensuring the operator's gas supply safety. Furthermore, the output gas path is equipped with a one-way valve, ensuring that the working gas path does not interfere with the breathing gas path. The equipment box can withstand the weight of two operators and their workload, ensuring safety and stability. The door-tilting dragger is easy to assemble, allowing the door to be tilted using only the operator's weight.

[0057] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications based on these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of this application.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A method for breaking a fixed bolt using pneumatic impact quick-break, characterized in that, Includes the following steps: Once the target door is identified, a pneumatic impact gun and a chisel are used to cut open the four corners of the door frame outside the target door. Use a crowbar to pry open the vertical door side strips on both sides of the door frame; A bolt detector is used to determine the position of each fixing bolt inside the door frame; A pneumatic impact gun and a chisel were used to break the concrete near each of the fixing bolts, creating a gap for breaking the bolts. Replace the crescent-shaped shovel head and quickly break each of the fixing bolts through the gaps between the breaking bolts. The target door is pulled out entirely using a door traction and extraction device, thus completing the demolition.

2. The method for breaking a pneumatically impacted, quick-break fixing bolt according to claim 1, characterized in that: The step of using a pneumatic impact gun and a chisel to cut open the four corners of the door frame outside the target door includes: the door frame is composed of horizontal door side strips and vertical door side strips, and the door frame is divided into two independent horizontal door side strips and two independent vertical door side strips by cutting the junction of the horizontal door side strips and the vertical door side strips.

3. The method for breaking a pneumatically impacted, quick-break fixing bolt according to claim 2, characterized in that: The width of the gap between the demolition bolts is 1.1cm to 2.0cm.

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