A device for blasting and demolishing a cement concrete slab

Abstract

This application discloses a blasting demolition device for cement concrete slabs, relating to the field of blasting technology. It includes a blasting device shell, a sealing component, a right-angled triangular shaped charge liner, and a blast height control component. The blast height control component is placed on the concrete to be blasted to provide stable support. The blasting device shell is made of PVC material, and the interior is isolated by the shaped charge liner to create an upper cavity for filling with explosives. During the explosion, the shaped charge liner reflects and focuses the explosion energy, directing it towards the concrete, improving the breaking efficiency and reducing fragmentation, thus enhancing safety.

Description

Technical Field

[0001] This utility model relates to the field of blasting technology, and in particular to a device for blasting and demolishing cement concrete slabs. Background Technology

[0002] In traditional construction, the demolition of cement concrete slabs often faces problems of low efficiency and high safety risks. Existing methods are not efficient in energy utilization, and the explosive energy is easily scattered, resulting in damage to the surrounding environment and threats to personnel safety. There is an urgent need for a safer and more efficient demolition technology. Utility Model Content

[0003] This application provides a cement concrete slab blasting demolition device, which solves the technical problems of low energy utilization and insufficient safety in the prior art. By isolating and focusing the explosion energy with a shaped charge liner, it achieves the technical effects of improving the crushing efficiency and reducing the risk of flying debris.

[0004] This application provides a demolition device for cement concrete slabs by blasting, including a blasting device shell, a sealing component, a shaped charge liner, and a blast height control component; the blast height control component is placed on the concrete to be blasted, and the two ends of the blasting device shell are supported by the blast height control component; the two ends of the blasting device shell are equipped with sealing components; the shaped charge liner is placed vertically inside the blasting device shell, and the shaped charge liner isolates an upper cavity inside the blasting device shell; the upper cavity contains explosives; the structure of the blasting device shell is circular or rectangular.

[0005] The height of the frying height control component is 40-60mm; The outer shell of the blasting device is made of PVC material; The shaped charge liner consists of two flat auxiliary surfaces; one end of the two auxiliary surfaces intersects at an angle of 90°, and the intersecting end is used to define the boundary direction of energy reflection; the other end of the two auxiliary surfaces contacts the bottom edge inside the shell of the blasting device, which serves to support and isolate the inside of the shell of the blasting device from the upper cavity, and also guides the explosion shock wave to be reflected at a specific angle. The thickness of the shaped charge is 1.5mm, and the side length of both sides is 30mm. The material of the shaped charge can be steel, copper, or aluminum. The better the ductility, the better the effect. The upper chamber has a detonation velocity of 4500–7000 m / s, a heat of explosion of 2.5–4.5 MJ / kg, and a charge density of 1.1–2.8 g / kg. Charge density refers to the ratio of charge mass to the volume of the space containing the charge.

[0006] One or more technical solutions provided in this application have at least the following technical effects or advantages: By isolating the upper cavity with a shaped charge liner, the explosive energy is focused on the concrete slab, improving energy utilization, reducing energy scattering, lowering the risk of fragmentation, and increasing fragmentation efficiency.

[0007] The shaped charge shield's isolation function also enhances safety; by separating the upper cavity, it limits the range of explosive fragments from flying. Attached Figure Description

[0008] Figure 1 This is a three-dimensional structural schematic diagram of a cement concrete slab blasting demolition device according to the present invention; Figure 2 This is a structural diagram of the explosive charge liner of a cement concrete slab blasting demolition device according to this utility model; Figure 3 This is a schematic diagram showing the explosive distribution of a cement concrete slab demolition device according to this utility model. Figure 4 This is a construction site diagram of a cement concrete slab blasting demolition device according to this utility model; Figure 5 This is a construction site explosion effect diagram of a cement concrete slab blasting demolition device according to the present invention.

[0009] In the picture: 100. Concrete; 110. Blast height control component; 200. Blasting device casing; 201. Explosive; 202. Upper cavity; 210. Sealing component; 220. Explosive shaped cover. Detailed Implementation

[0010] To facilitate understanding of this utility model, a more comprehensive description of this application will be given below with reference to the accompanying drawings, which show preferred embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to enable a more thorough and complete understanding of the disclosure of this utility model.

[0011] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0012] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0013] Example 1: As Figures 1 to 3 As shown, this application discloses a blasting demolition device for cement concrete slabs, comprising a blasting device housing 200, a sealing element 210, a blasting liner 220, and a blasting height control element 110. The blasting height control element 110 is placed on the concrete 100 to be blasted. The two ends of the blasting device housing 200 are supported by the blasting height control element 110, and the two ends of the blasting device housing 200 are fitted with sealing elements 210. The blasting liner 220 is vertically placed inside the blasting device housing 200, and the blasting liner 220 isolates an upper cavity 202 inside the blasting device housing 200. Explosive 201 is placed inside the upper cavity 202. The structure of the blasting device housing 200 is circular or rectangular.

[0014] The height of the frying height control component 110 is 40-60mm.

[0015] The outer shell 200 of the blasting device is made of PVC material.

[0016] The shaped charge shroud 220 consists of two flat auxiliary surfaces; one end of the two auxiliary surfaces intersects at an angle of 90°, and the intersecting end is used to define the boundary direction of energy reflection; the other end of the two auxiliary surfaces contacts the bottom edge inside the shell 200 of the blasting device, which serves to support and isolate the interior of the shell 200 of the blasting device, separating the upper cavity 202, and also guiding the explosion shock wave to be reflected at a specific angle.

[0017] The thickness of the shaped charge is 1.5mm, and the side length of both sides is 30mm. The material of the shaped charge 220 can be steel, copper, or aluminum. The better the ductility, the better the effect.

[0018] The upper cavity 202 has a detonation velocity of 4500–7000 m / s, a heat of explosion of 2.5–4.5 MJ / kg, and a charge density of 1.1–2.8 g / kg. Charge density refers to the ratio of charge mass to the volume of the space containing the charge.

[0019] Specific implementation: First, place the blast height control component 110 on the concrete 100 to be blasted. The height of the blast height control component 110 is 40-60mm, providing stable support and buffering to prevent the device from shifting during blasting. Take the outer shell 200 of the blasting device and put the shaped charge liner 220 into the outer shell 200 of the blasting device to isolate the internal space into the upper cavity 202. As a right-angled triangular structure, the hypotenuse or right-angled side of the shaped charge liner 220 acts as an energy guide plate. When the explosive 201 is detonated in the upper cavity 202, the explosion shock wave first hits the plane of the shaped charge liner 220. Due to the geometric characteristics of the right angle shape, the wave energy will be reflected and focused, and transmitted vertically downward to the concrete 100.

[0020] The upper cavity 202 serves as the filling area for the explosive 201. The explosive 201 is placed inside the upper cavity 202, and the isolation design ensures the directional release of the explosion energy. Next, sealing parts 210 are installed at both ends of the outer shell 200 of the blasting device. The assembled outer shell 200 of the blasting device is placed on the blast height control part 110. The explosive 201 is detonated by an external detonating device (such as an electric detonator or detonating cord). The explosion energy is directed to the concrete 100 through the isolation design of the shaped charge liner 220, achieving efficient fragmentation. After the blast, the remaining device fragments are removed, and the demolition is completed.

[0021] Beneficial effects: The explosive shroud 220 isolates the upper cavity 202, focusing the explosion energy onto the concrete 100, improving energy utilization, reducing energy scattering, lowering the risk of fragmentation, and increasing crushing efficiency.

[0022] The isolation function of the shaped charge 220 also enhances safety by limiting the range of explosive fragments by separating the upper cavity 202.

[0023] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. For those skilled in the art, various modifications and variations are possible with this utility model. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for demolishing cement concrete slabs by explosives, characterized in that, The device includes a blasting device housing (200), a sealing element (210), a shaped charge liner (220), and a blast height control element (110). The blast height control element (110) is placed on the concrete (100) to be blasted. The two ends of the blasting device housing (200) are supported by the blast height control element (110), and the two ends of the blasting device housing (200) are equipped with sealing elements (210). The shaped charge liner (220) is placed vertically inside the blasting device housing (200), and the shaped charge liner (220) isolates the upper cavity (202) inside the blasting device housing (200). The upper cavity (202) contains explosives (201). The structure of the blasting device housing (200) is circular or rectangular.

2. The cement concrete slab demolition device as described in claim 1, characterized in that, The height of the frying height control component (110) is 40-60mm.

3. The cement concrete slab demolition device as described in claim 1, characterized in that, The outer shell (200) of the blasting device is made of PVC material.

4. The demolition device for cement concrete slabs by explosives as described in claim 1, characterized in that, The shaped charge shroud (220) consists of two flat auxiliary surfaces; one end of the two auxiliary surfaces intersects at an angle of 90°, and the intersecting end is used to define the boundary direction of energy reflection; the other end of the two auxiliary surfaces contacts the bottom edge inside the shell (200) of the blasting device, which serves to support and isolate the interior of the shell (200) of the blasting device, separating the upper cavity (202) from the interior of the shell (200), and also guiding the explosion shock wave to be reflected at a specific angle.

5. The cement concrete slab demolition device as described in claim 4, characterized in that, The two auxiliary surfaces of the shaped charge liner (220) are both 1.5 mm thick and 30 mm long. The material of the shaped charge liner (220) can be steel, copper or aluminum.

6. The cement concrete slab demolition device as described in claim 1, characterized in that, The upper cavity (202) has a detonation velocity of 4500–7000 m / s, a heat of explosion of 2.5–4.5 MJ / kg, and a charge density of 1.1–2.8 g / kg. .

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