A fixture and protection device for a burst test

Abstract

The application provides a fixing and protection device for blasting test, comprising a base, a fixing groove and a fixing frame are arranged on the base, two fixing clamps are arranged on the fixing frame; the fixing groove is located on the top of the base, the fixing frame is located on one side of the fixing groove and is height-adjustable, the two fixing clamps are horizontally symmetrically arranged and are arranged to be capable of clamping the blasting cylinder in an openable and closable manner, and the two fixing clamps are located directly above the fixing groove; the device further comprises a transparent cover capable of covering the base, the fixing frame and the two fixing clamps. The device can fix the concrete test block and the blasting cylinder respectively through the base, the fixing groove and the fixing frame on the base and the two fixing clamps. The device avoids the blasting cylinder from being tilted during the test and affecting the test effect. In addition, the base, the fixing frame and the fixing clamp cover are provided with the transparent cover, so that the device can avoid the concrete and rock fragments from splashing and hurting people or a camera device.

Description

Technical Field

[0001] This utility model relates to the field of blasting test technology, specifically to a fixing and protective device for blasting tests. Background Technology

[0002] The purpose of conducting blasting tests is threefold: first, to simulate the dynamic response of concrete structures in actual engineering projects (such as building demolition and tunnel excavation) and analyze crack propagation, fracture mechanism, and energy distribution under blasting loads; second, to determine the optimal charge quantity, hole spacing, and initiation method to balance the fracture effect and vibration control; and third, to verify the impact of blasting on surrounding structures and provide a basis for engineering blasting design.

[0003] In existing technologies, during blasting tests, when the concrete test block is broken, the blasting cylinder stands upright on top of the concrete test block, resulting in poor stability. When the emulsion explosive in the upper part of the cylinder detonates, the cylinder is prone to tilting due to the energy, and the shattered concrete and stone fragments are easily scattered, which may injure the test personnel and photographic equipment, thus seriously affecting the blasting test results and making it impossible to effectively analyze the test results. Utility Model Content

[0004] To address the technical problems existing in the background art, this utility model provides a fixing and protection device for blasting tests.

[0005] The technical solution of this utility model is as follows: A fixing and protection device for a blasting test includes a base, a fixing groove and a fixing frame on the base, and two fixing clips on the fixing frame; The fixing slot is located on the top of the base, the fixing bracket is located on one side of the fixing slot and its height is adjustable, and the two fixing clamps are horizontally symmetrically arranged and are designed to be able to open and close to hold the blasting cylinder. The two fixing clamps are located directly above the fixing slot. It also includes a transparent cover that can cover the base, the mounting bracket, and the two mounting clips.

[0006] The concrete test block and the blasting cylinder can be separately fixed using the base, its fixing grooves and brackets, and two fixing clamps. This prevents the blasting cylinder from tipping over during the test and affecting the test results. In addition, the base, brackets, and clamps are covered with transparent covers to prevent concrete fragments from flying and injuring people or photographic equipment.

[0007] In the above scheme, the upper part of the fixing frame is provided with a vertical plate, and two fixing clamps are horizontally slidably connected to one side of the vertical plate, with a spring connecting the two fixing clamps.

[0008] In the above scheme, a tubular slide rail is provided on one side of the vertical plate, and a slide bar that slides with the slide rail is provided on the fixing clamp.

[0009] In the above scheme, the slide rail is a rectangular tube and the slide bar is a rectangular column.

[0010] In the above scheme, there are four slide rails arranged in a rectangular array on the surface of the vertical plate. The fixing clamps are equipped with two slide bars, each slide bar slidingly engaging with one slide rail, and the slide bars of the two fixing clamps extending in opposite directions.

[0011] In the above scheme, the opposite ends of the two horizontally symmetrical sliders are connected by a spring.

[0012] In the above scheme, the fixing clip is U-shaped, with its two parallel sections being the slide bar and the clamping part, respectively, and the clamping part is positioned away from the vertical plate relative to the slide bar.

[0013] In the above scheme, anti-slip textures are provided on the opposite end faces of the clamping parts of the two fixing clamps.

[0014] In the above scheme, the fixing frame includes a support tube and a support rod that are slidably connected. The lower end of the support tube is connected to the base. The side wall of the support rod is provided with a first locking hole and the side wall of the support tube is provided with a second locking hole. Multiple first and / or second locking holes are arranged vertically. The fixing frame also includes a locking pin that can be inserted into the first and second locking holes.

[0015] The above solution also includes a base, which works with the transparent cover to form a box. The top of the base has two horizontal plates, which are arranged symmetrically and have V-shaped slots on opposite sides. The base is hexagonal and its two symmetrical corners can be locked into the V-shaped slots of the two plates.

[0016] The fixing and protection device for blasting tests provided by this utility model has the following effects: 1. The concrete test block and the blasting cylinder can be fixed separately using the base, its fixing groove and frame, and two fixing clamps. This prevents the blasting cylinder from tilting during the test and affecting the test results.

[0017] 2. A transparent cover encloses the base, mounting frame, and clamps to prevent concrete fragments from flying and injuring people or photographic equipment during the test.

[0018] 3. The transparent cover is connected to the base and two clamping plates and V-shaped slots to form a box body by engaging with the hexagonal base. This connects the transparent cover, base, base and fixing frame into one unit, improving the stability of the base and fixing frame during the test. Attached Figure Description

[0019] In the attached diagram: Figure 1 A schematic diagram of the fixing and protective devices for the blasting test; Figure 2 This is a schematic diagram of the base and the transparent cover; Figure 3 This is a schematic diagram of the base, mounting bracket, and fixing clamp. Figure 4 This is a cross-sectional schematic diagram of the fixing clamp and vertical plate in Embodiment 2.

[0020] The components represented by the various reference numerals in the diagram are: 1. Base; 11. Fixing groove; 2. Fixing frame; 21. Support tube; 211. Second locking hole; 22. Support rod; 221. First locking hole; 23. Locking pin; 24. Vertical plate; 241. Second friction-enhancing rack; 25. Slide rail; 3. Fixing clamp; 31. Slide bar; 311. First friction-enhancing rack; 32. Clamping part; 4. Transparent cover; 5. Base; 6. Clamping plate; 7. Spring. Detailed Implementation

[0021] Example 1: like Figures 1 to 3 As shown, this embodiment provides a fixing and protection device for a blasting test, including a base 1, a fixing groove 11 and a fixing frame 2 on the base 1, and two fixing clips 3 on the fixing frame 2; The fixing groove 11 is located on the top of the base 1, the fixing frame 2 is located on one side of the fixing groove 11 and its height is adjustable, and the two fixing clips 3 are horizontally symmetrically arranged and are configured to be able to open and close to hold the blasting cylinder. The two fixing clips 3 are located directly above the fixing groove 11. It also includes a transparent cover 4, which can cover the base 1, the fixing frame 2 and the two fixing clips 3.

[0022] The concrete test block and the blasting cylinder can be fixed separately by the base 1, the fixing groove 11, the fixing frame 2, and the two fixing clamps 3. This prevents the blasting cylinder from tilting during the test and affecting the test results. In addition, the base 1, the fixing frame 2, and the fixing clamps 3 are covered with a transparent cover 4 to prevent concrete fragments from flying and injuring people or photographic equipment.

[0023] In detail, such as Figure 1 As shown, the device in this embodiment includes two parts: one part is used to fix the test material, and the other part is used for safety protection.

[0024] The safety protection components include a base 5 and a transparent cover 4, which together form a box. The components for fixing the test materials include a base 1, a fixing groove 11, a fixing frame 2, and two fixing clips 3, all of which are placed inside the box for protection.

[0025] Combination Figure 2 As shown, in this embodiment, the base 5 and the transparent cover 4 cooperate to form a rectangular box. The base 5 is the bottom plate of the box, and the transparent cover 4 is connected to the base 5 by means of snap-fit ​​or plug-in.

[0026] The base 5 has two horizontal locking plates 6 on its top. The two locking plates 6 are arranged horizontally and symmetrically, and V-shaped slots are provided on their opposite sides. In this embodiment, the base 1 is set as a regular hexagonal plate, placed horizontally, and its two symmetrical corners can be locked into the V-shaped slots of the two locking plates 6.

[0027] The base 1 is secured by the clamping plate 6 and the V-shaped groove. This not only restricts the base 1 from moving horizontally by utilizing the angular relationship between the V-shaped groove and the hexagonal base 1, but also connects the base 1 and the base 5 together. In other words, it connects the fixing part of the test material and the safety protection part together. The weight of the base 5 and the transparent cover 4 increases the stability of the base 1 and the fixing frame 2, thereby preventing the base 1 and the fixing frame 2 from shifting or tilting during the test, so as to obtain effective and accurate test results and avoid safety accidents.

[0028] Combination Figure 3 As shown, the fixing groove 11 is located at the top center of the base 1 and is used to hold the concrete test block. The fixing frame 2 includes a support tube 21 and a support rod 22 inserted into the support tube 21. The lower end of the support tube 21 is connected to the base 1, and the support rod 22 slides in the support tube 21. The side wall of the support rod 22 is provided with a first locking hole 221, and the side wall of the support tube 21 is provided with a second locking hole 211. Multiple first locking holes 221 and / or second locking holes 211 are arranged vertically. The fixing frame 2 also includes at least one locking pin 23, which can be inserted into the first locking hole 221 and the second locking hole 211 to lock the support rod 22 and the support tube 21. When it is necessary to adjust the height of the fixing frame 2, the extension length of the support rod 22 can be adjusted by pulling out the locking pin 23 and inserting it into the first locking hole 221 and / or the second locking hole 211 at different positions. This adjusts the height of the fixing frame 2.

[0029] Two sets of the first lock hole 221, the second lock hole 211, and the lock pin 23 can be provided, and are arranged symmetrically with respect to the central axis of the support rod 22 and the support tube 21.

[0030] In this embodiment, the support tube 21 is a rectangular tube, and the support rod 22 is a rectangular rod.

[0031] The upper part of the fixing frame 2 is provided with a vertical plate 24, and two fixing clips 3 are horizontally slidably connected to one side of the vertical plate 24. A spring 7 is connected between the two fixing clips 3. The two fixing clips 3 are used to clamp the blasting cylinder. The upper end of the support rod 22 is bent towards the side where the fixing groove 11 is located, and the end is connected to the other side of the vertical plate 24, so that the fixing clips 3 can be located directly above the fixing groove 11, thereby aligning the fixing position of the blasting cylinder with the vertical alignment of the concrete test block.

[0032] Specifically, a tubular slide rail 25 is provided on one side of the vertical plate 24, and a slide bar 31 is provided on the fixing clamp 3 to slide in cooperation with the slide rail 25. The slide rail 25 is preferably rectangular tubular, and the slide bar 31 is preferably rectangular columnar, so as to support the fixing clamp 3 through the slide rail 25.

[0033] In this embodiment, four slide rails 25 are arranged in a rectangular array on the surface of the vertical plate 24. Two slide bars 31 are provided on the fixing clamp 3. Both slide bars 31 extend horizontally and are arranged vertically in parallel intervals. The slide bars 31 of the two fixing clamps 3 extend towards each other, and each slide bar 31 slides in contact with one slide rail 25. This improves the support effect of the vertical plate 24 on the fixing clamp 3 and enhances the stability of the connection between the fixing clamp 3 and the vertical plate 24.

[0034] In addition, the opposite ends of the two horizontally symmetrical sliders 31 are connected by springs 7, and the two sliders 31 of one fixed clamp 3 are respectively connected to the two sliders 31 of another fixed clamp 3 by a spring 7.

[0035] Preferably, the portion of the spring 7 near its two ends is located inside the slide rail 25, and the middle part of the spring 7 is fixedly connected to the vertical plate 24. The two fixing clips 3 will automatically center through the self-balancing elastic force of the spring 7, which makes it easy to keep the concrete test block vertically aligned with the high-density cylinder.

[0036] In this embodiment, the fixing clip 3 is U-shaped, with the two parallel segments of the U-shape being a slide bar 31 and a clamping part 32, respectively. The clamping part 32 is positioned away from the vertical plate 24 relative to the slide bar 31. Anti-slip textures are provided on the opposite end faces of the clamping parts 32 of the two fixing clips 3.

[0037] When it is necessary to clamp the frying tube, the two fixed clamps 3 are opened, the frying tube is placed between the two clamping parts 32, and the two fixed clamps 3 are clamped by the spring 7, and the frying tube is clamped by the opposite ends of the two clamping parts 32.

[0038] Example 2: like Figure 4 As shown, the fixing and protection device for the blasting test provided in this embodiment is basically the same as that in Embodiment 1. The difference is that the end faces of the two clamping parts 32 at opposite ends are concave, preferably V-shaped concave, that is, the horizontal cross-sectional shape of the end faces of the two clamping parts 32 at opposite ends is V-shaped, and the included angle of the V-shape is preferably greater than 90 degrees.

[0039] The frying tube is usually made of a round tube. The V-shaped concave end face can increase the contact point between the clamping part 32 and the frying tube, and make the side wall of the frying tube located in the concave area of ​​the end face of the clamping part 32. This can increase the fixing effect of the fixing clamp 3 on the frying tube and further improve the effect of preventing the frying tube from tilting.

[0040] Furthermore, during the test of the blasting cylinder, the energy generated by the explosion of the explosive will cause the blasting cylinder to exert a shaking force on the fixing clamp 3. If the shaking force is too large, it may shake the two fixing clamps 3 apart and cause them to tilt. In order to reduce this possibility, in this embodiment, a first friction-increasing rack 311 is provided on the side of the slide bar 31 near the vertical plate 24, and a second friction-increasing rack 241 is provided on the inner side of the slide rail 25 corresponding to the first friction-increasing rack 311.

[0041] In this embodiment, since the slide rail 25 is formed by fastening the vertical plate 24 with a U-shaped profile, the second friction-enhancing rack 241 is set on the surface of the vertical plate 24. The length of the second friction-enhancing rack 241 is greater than that of the first friction-enhancing rack 311, so that the first friction-enhancing rack 311 always corresponds to the second friction-enhancing rack 241 within the horizontal sliding range of the slide bar 31.

[0042] Both the first friction-enhancing rack 311 and the second friction-enhancing rack 241 are formed by carving out inter-tooth grooves on the slide bar 31 and the vertical plate 24. Therefore, when the two fixed clamps 3 are opened, the first friction-enhancing rack 311 and the second friction-enhancing rack 241 can be made not to interfere with each other by controlling the position and direction of the force, so that the two fixed clamps 3 can be opened smoothly.

[0043] When clamping the explosive barrel, the clamping part 32 of the fixed clamp 3 is subjected to the reverse force of the explosive barrel. This reverse force will generate torque on the slide bar 31, causing one end of the slide bar 31 connected to the spring 7 to press against the slide rail 25 away from the vertical plate 24, while the other end presses against the vertical plate 24. This causes the first friction-increasing rack 311 and the second friction-increasing rack 241 to mesh. Through the meshing of the first friction-increasing rack 311 and the second friction-increasing rack 241, the difficulty of the slide bar 31 sliding relative to the vertical plate 24 is increased. Thus, even if the explosive barrel exerts a large force on the fixed clamp 3 due to the explosion of the explosive, the possibility of the two fixed clamps 3 sliding and separating can be reduced.

[0044] The dimensions of the first friction-enhancing rack 311 and the second friction-enhancing rack 241 can be customized according to the test requirements.

Claims

1. A fixing and protective device for a blasting test, characterized in that, Includes a base (1), on which a fixing groove (11) and a fixing frame (2) are provided, and on which two fixing clips (3) are provided; The fixing groove (11) is located at the top of the base (1), the fixing frame (2) is located on one side of the fixing groove (11) and its height is adjustable, the two fixing clips (3) are arranged horizontally and symmetrically and are configured to be able to open and close to hold the blasting cylinder, and the two fixing clips (3) are located directly above the fixing groove (11). It also includes a transparent cover (4) that can cover the base (1), the mounting bracket (2) and two fixing clips (3).

2. The fixing and protective device for a blasting test as described in claim 1, characterized in that, The upper part of the fixing frame (2) is provided with a vertical plate (24), and the two fixing clips (3) are horizontally slidably connected to one side of the vertical plate (24). A spring (7) is connected between the two fixing clips (3).

3. The fixing and protective device for a blasting test as described in claim 2, characterized in that, The vertical plate (24) has a tubular slide rail (25) on one side, and the fixing clamp (3) has a slide bar (31) that slides with the slide rail (25).

4. The fixing and protective device for a blasting test as described in claim 3, characterized in that, The slide rail (25) is a rectangular tube, and the slide bar (31) is a rectangular column.

5. The fixing and protective device for a blasting test as described in claim 3, characterized in that, The slide rails (25) are provided in four rows and arranged in a rectangular array on the surface of the vertical plate (24). The fixing clamp (3) is provided with two slide bars (31), each slide bar (31) slidingly engaging with one slide rail (25). The slide bars (31) of the two fixing clamps (3) extend in opposite directions.

6. The fixing and protective device for a blasting test as described in claim 5, characterized in that, The opposite ends of two horizontally symmetrical sliders (31) are connected by a spring (7).

7. The fixing and protective device for a blasting test as described in claim 6, characterized in that, The fixing clip (3) is U-shaped, with its two parallel sections being a slide bar (31) and a clamping part (32), with the clamping part (32) positioned away from the vertical plate (24) relative to the slide bar (31).

8. The fixing and protective device for a blasting test as described in claim 7, characterized in that, The clamping parts (32) of the two fixing clips (3) are provided with anti-slip textures on their opposite end faces.

9. The fixing and protective device for a blasting test as described in claim 1, characterized in that, The fixing frame (2) includes a support tube (21) and a support rod (22) that are slidably connected. The lower end of the support tube (21) is connected to the base (1). The side wall of the support rod (22) is provided with a first locking hole (221) and the side wall of the support tube (21) is provided with a second locking hole (211). The first locking hole (221) and / or the second locking hole (211) are arranged in multiple vertical directions. The fixing frame (2) also includes a locking pin (23) that can be inserted into the first locking hole (221) and the second locking hole (211).

10. The fixing and protective device for a blasting test as described in claim 1, characterized in that, It also includes a base (5), which works with a transparent cover (4) to form a box. The top of the base (5) is provided with two horizontal card plates (6). The two card plates (6) are arranged horizontally and symmetrically, and V-shaped slots are provided on opposite sides. The base (1) is a hexagonal plate, and its two symmetrical corners can be locked in the V-shaped slots of the two card plates (6).

Images