A blasting protection mechanism

Abstract

A blast protection mechanism includes an intercepting membrane, a winding roller, and a transport box. The intercepting membrane and the winding roller can be placed inside the transport box, and the intercepting membrane is wound around the winding roller. Pre-drilled holes are evenly distributed on both sides of the intercepting membrane, and a counterweight structure is installed within each of these holes. A fixing mechanism is also provided at the bottom of the counterweight structure. This invention has a simple structure, is easy to operate, and during blasting, it prevents the membrane from shifting its coverage position or being damaged by impacts from thrown fragments, ensuring stability and reliability.

Description

Technical Field

[0001] This invention belongs to the technical field of blast protection devices, and specifically relates to a blast protection mechanism. Background Technology

[0002] Blasting is a technique that utilizes the compression, loosening, destruction, throwing, and destructive effects produced by the explosion of explosives in air, water, soil, rock, or other objects to achieve a desired objective. When an explosive charge or package detonates in soil, rock, or a structure, it causes compression, deformation, destruction, loosening, and throwing of the material. Blasting is primarily used in earthwork engineering and the demolition of metal buildings and structures.

[0003] The shortcomings of existing technologies: In blasting engineering, corresponding blasting safety protection measures are required for different blasting scenarios. These include membrane-covered blasting protection measures for rock fractures, fracture zones, boreholes, and weak surfaces. However, in actual membrane-covered blasting protection, due to the use of segmented micro-delay blasting technology to control the amount of explosive charge per blast in order to reduce the amount of thrown fragments, the fragments thrown in each blast may impact the membrane and shift its coverage position, causing the membrane to lose its protective effect against subsequent blasts. This situation is most likely to occur when protecting slopes from blasting, and the membrane itself may also be damaged by the impact of thrown fragments, losing its protective effect. Summary of the Invention

[0004] I. Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention proposes a simple, easy-to-operate, and stable and reliable blast protection mechanism that prevents membrane misalignment and damage from impacts by thrown fragments during blasting.

[0006] II. Specific Technical Solutions

[0007] A blast protection mechanism includes an intercepting membrane, a winding roller, and a transport box. The intercepting membrane and the winding roller can be placed inside the transport box, and the intercepting membrane is wound on the winding roller.

[0008] The interceptor membrane has pre-drilled holes evenly spaced on both sides. A counterweight structure is installed inside the pre-drilled holes, and a fixing mechanism is provided at the bottom of the counterweight structure.

[0009] Preferably, the intercepting membranes can be stacked and used in combination, with the pre-reserved hole structures aligned and overlapping after stacking.

[0010] Preferably, the counterweight structure includes an upper cover and a lower cover. A short screw and a long screw are respectively provided on the upper and lower surfaces of the lower cover. A threaded hole is provided in the middle of the lower surface of the upper cover. The short screw passes through the reserved hole structure and engages with the threaded hole. The long screw is used to install and fix the mechanism.

[0011] Preferably, the fixing mechanism is provided with a pressing mounting rod and a insertion rod, and the top of the pressing mounting rod is provided with a mounting screw hole, which cooperates with the long screw;

[0012] The cutting rod has an installation hole at its top end, and the pressing installation rod is slidably installed in the installation hole. A tension spring is connected to the bottom of the pressing installation rod, and the other end of the tension spring is fixedly connected to the inner wall of the bottom of the installation hole.

[0013] Preferably, the inner end wall of the mounting hole is provided with a limiting groove, and the outer wall of the pressing mounting rod is provided with a corresponding limiting protrusion, the limiting protrusion being slidably disposed in the limiting groove.

[0014] Preferably, the transport box is provided with a barrier film placement area, a fixing equipment placement area and a cutting tool placement area in sequence. The barrier film placement area, the fixing equipment placement area and the cutting tool placement area are separated by a partition plate. A support plate structure is provided in the barrier film placement area, and the winding roller is supported on the support plate structure.

[0015] Preferably, the mounting plate structure includes two mounting plates, which are respectively arranged on both sides of the interceptor membrane placement area. Each mounting plate includes a fixed outer shell plate and a telescopic inner plate. A sliding telescopic cavity is provided on the fixed outer shell plate, and the telescopic inner plate is slidably installed in the sliding telescopic cavity. A sealing limit block is also provided at the bottom of the telescopic inner plate. The top of the telescopic inner plate extends from the upper end of the fixed outer shell plate, and a snap-fit ​​structure is provided at the middle position of the top of both the fixed outer shell plate and the telescopic inner plate.

[0016] The bottom of the sliding telescopic cavity is also provided with a connecting air passage, which is connected to an air pipe structure. The air pipe structure is connected to an inflatable airbag and a deflation valve. The inflatable airbag and the deflation valve are connected in parallel, and the sliding telescopic cavities of the two mounting plates are interconnected.

[0017] Preferably, a mounting rotating sleeve is rotatably provided on the outer wall of both ends of the take-up roller, and the bayonet structure is an arc-shaped bayonet, in which the mounting rotating sleeve is placed.

[0018] Preferably, a universal roller mechanism is also provided at the bottom of the transport box.

[0019] Preferably, the fixing mechanism is provided with an installation kit, the installation kit has an installation threaded hole in the middle, the long screw cooperates with the installation threaded hole, and the side of the installation kit is also connected to an elastic rope loop.

[0020] The beneficial effects of this invention are as follows: This invention incorporates multiple fixing devices to enhance the protective effect of the intercepting membrane. The insertion rod and the pressing installation rod press and limit the intercepting membrane at the weak surface, preventing displacement even when impacted by multiple fragments from the weak surface. This achieves excellent interception and protection against fragments throughout the blasting process. The product is particularly suitable for use on slopes prone to fragment impact displacement. Furthermore, the tensile deformation of the tension spring fixed between the pressing installation rod and the insertion rod buffers the impact of fragments on the intercepting membrane, further reducing the likelihood of damage from fragment impacts and improving the membrane's impact resistance. Similarly, elastic rope loops are used in rock blasting zones, directly fitted onto irregular protruding rocks or hard protrusions for fixation. The elastic force of the rope loops can still be controlled through deformation... The shielding film is designed to absorb the impact of fragments, creating a cushioning effect. For this reason, the shielding film does not need to be very thick and can be directly wound onto the take-up roller, making it very convenient to carry. The shielding film can be overlapped and used in combination, allowing it to cover a larger area of ​​vulnerable surfaces, thus improving the product's applicability. The transport box features a liftable support plate structure that, when raised, is flush with the box opening. This facilitates placing the take-up roller with the shielding film wound on the top of the telescopic inner plate's latch structure, or removing the shielding film and take-up roller as a whole. When lowered, the shielding film and take-up roller fall completely into the transport box, facilitating long-term storage and transportation. Furthermore, a rotating support sleeve rotates relative to the take-up roller, allowing the shielding film wound on the take-up roller to rotate smoothly, pull out, and cut for use, improving the product's ease of use. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 for Figure 1 A schematic diagram of the structure at point A.

[0023] Figure 3 This is a diagram showing the overlapping and usage state of the interceptor membrane in this invention.

[0024] Figure 4 This is a schematic diagram of the installation structure of the fixing mechanism in this invention.

[0025] Figure 5 This is a schematic diagram of the installation cross-section structure of the fixing mechanism in this invention.

[0026] Figure 6 This is a schematic diagram of the cross-sectional structure inside the transport box in this invention.

[0027] Figure 7 This is a schematic diagram of the installation cross-sectional structure of the fixing mechanism in Embodiment 2 of the present invention.

[0028] Explanation of reference numerals in the attached drawings: 1. Interceptor membrane; 2. Rewinding roller; 3. Erecting rotating sleeve; 4. Fixing mechanism; 5. Pressing mounting rod; 6. Tension spring; 7. Transport box; 8. Erecting plate structure; 9. Counterweight structure; 10. Universal roller mechanism;

[0029] Pre-drilled hole structure 101;

[0030] Upper cover block 91; Lower cover block 92; Short screw 93; Long screw 94; Threaded hole 95;

[0031] Insertion rod 402; mounting screw hole 51; mounting hole 401; limiting groove 4011; limiting protrusion 501;

[0032] 71; 72; 73; 74; 75;

[0033] Erection plate 81; fixed outer shell plate 82; telescopic inner plate 83; sliding telescopic cavity 84; sealing limit block 85; connecting airway 86; air pipe structure 87; inflatable airbag 88; deflation valve 89; bayonet structure 810;

[0034] Mounting kit 41; mounting threaded hole 42; elastic cord loop 43. Detailed Implementation

[0035] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention.

[0036] In the description of this invention, it should be noted that the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the invention.

[0037] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] Implementation examples:

[0039] like Figure 1 , Figure 2 and Figure 3 and Figure 4 and Figure 5 and Figure 6 As shown: A blast protection mechanism is provided with an intercepting membrane 1, a winding roller 2 and a transport box 7. The intercepting membrane 1 and the winding roller 2 can be placed in the transport box 7, and the intercepting membrane 1 is wound on the winding roller 2. A universal roller mechanism 10 is also provided at the bottom of the transport box 7 to facilitate the pushing and pulling of the transport box 7 on a relatively flat ground, which saves more effort.

[0040] Pre-reserved hole structures 101 are evenly provided on both sides of the intercepting membrane 1. The two rows of pre-reserved hole structures 101 can be symmetrically distributed on the left and right or evenly distributed in a cross pattern. A counterweight structure 9 is installed in the pre-reserved hole structure 101, and a fixing mechanism 4 is also provided at the bottom of the counterweight structure 9.

[0041] The counterweight structure 9 is provided with an upper cover block 91 and a lower cover block 92. A short screw 93 and a long screw 94 are respectively provided on the upper and lower surfaces of the lower cover block 92. A threaded hole 95 is provided in the middle of the lower surface of the upper cover block 91. The short screw 93 passes through the reserved hole structure 101 and engages with the threaded hole 95. In this way, the upper cover block 91 and the lower cover block 92 sandwich the intercepting membrane 1 in the middle, making the structure more stable and the intercepting membrane 1 less likely to fall apart. Since only the relatively thin short screw 93 needs to pass through the reserved hole structure 101, the reserved hole structure 101 can be set to be smaller without affecting the overall strength of the intercepting membrane 1. Similarly, the upper cover block 91 and the lower cover block 92 can also be installed together in other ways, such as by using clips to fasten them together, but this method is not easy to disassemble and is not conducive to repeated use.

[0042] Long screws 94 are used to install the fixing mechanism 4. The counterweight structure 9 can also play a certain fixing role by its own weight. At the same time, without installing the fixing mechanism 4, long screws 94 can be directly inserted into the shallow soil layer to play a certain fixing role. This method is used for the middle part of the intercepting membrane 1 where the impact is not significant. For the edge parts, it is better to install the appropriate fixing mechanism 4 in conjunction with it.

[0043] The interceptor membrane 1 can be stacked for use. After stacking, the pre-reserved hole structures 101 are aligned and overlapped. The stacking method can be as follows: Figure 3 As shown, only the edge parts are overlapped, which reduces the fixing and processing procedures for the edge parts and provides more complete coverage. However, when the single-layer interceptor membrane 1 is too thin and the strength is insufficient, two interceptor membranes 1 can be used to completely overlap. Both overlapping methods can also be used simultaneously, depending on the specific site conditions.

[0044] The fixing mechanism 4 is provided with a pressing mounting rod 5 and a cutting rod 402. The top of the pressing mounting rod 5 is provided with a mounting screw hole 51, which is engaged with a long screw 94.

[0045] The top end of the insertion rod 402 has an installation hole 401, and the pressing installation rod 5 is slidably installed in the installation hole 401. The bottom of the pressing installation rod 5 is connected to a tension spring 6, and the other end of the tension spring 6 is fixedly connected to the bottom inner wall of the installation hole 401.

[0046] The interceptor membrane 1 is pressed and limited on the weak surface by the insertion rod 402 and the pressing and mounting rod 5, so that the interceptor membrane 1 will not shift when it is impacted by multiple fragments on the weak surface. It can achieve a good interception and protection effect on the weak surface fragments throughout the blasting stage. The product is especially suitable for use in sloping areas where fragment impact and displacement are likely to occur. Furthermore, the tension spring 6 fixedly connected between the pressing and mounting rod 5 and the insertion rod 402 buffers the fragment impact suffered by the interceptor membrane 1, further reducing the possibility of the interceptor membrane 1 being damaged by fragment impact, and further improving the impact protection effect of the interceptor membrane 1. Based on the above two points, the interceptor membrane 1 does not need to be designed to be very thick and heavy, and can be directly wound on the take-up roller, making it very convenient to carry.

[0047] A limiting groove 4011 is provided on the inner end wall of the mounting hole 401, and a limiting protrusion 501 is correspondingly provided on the outer wall of the pressing mounting rod 5. The limiting protrusion 501 is slidably disposed in the limiting groove 4011. The limiting groove 4011 limits the sliding of the limiting protrusion 501, thereby preventing the pressing mounting rod 5 from sliding out of the insertion rod 4 and causing the possibility of being unable to reset twice, thus improving the stability of product use.

[0048] The transport box 7 is provided with a barrier film placement area 71, a fixing equipment placement area 72, and a cutting tool placement area 73 in sequence. The barrier film placement area 71, the fixing equipment placement area 72, and the cutting tool placement area 73 are separated by partition plates. A support plate structure 8 is provided in the barrier film placement area 71, and the winding roller 2 is supported on the support plate structure 8. The fixing equipment placement area 72 is used to place items such as the fixing mechanism 4 and the counterweight structure 9. The cutting tool placement area 73 is used to place other auxiliary cutting and laying tools.

[0049] The support plate structure 8 consists of two support plates 81, which are respectively set on both sides of the interceptor membrane placement area 71. The support plate 81 includes a fixed outer shell plate 82 and a telescopic inner plate 83. A sliding telescopic cavity 84 is provided on the fixed outer shell plate 82. The telescopic inner plate 83 is slidably installed in the sliding telescopic cavity 84. A sealing limit block 85 is also provided at the bottom of the telescopic inner plate 83. The top of the telescopic inner plate 83 extends from the top of the fixed outer shell plate 82. A bayonet structure 810 is provided at the middle position of the top of both the fixed outer shell plate 82 and the telescopic inner plate 83.

[0050] The bottom of the sliding telescopic cavity 84 is also provided with a connecting airway 86, which is connected to an air pipe structure 87. The air pipe structure 87 is connected to an inflatable airbag 88 and a deflation valve 89. The inflatable airbag 88 and the deflation valve 89 are connected in parallel, and the sliding telescopic cavities 84 of the two mounting plates 81 are interconnected.

[0051] Inflating the airbag 88 allows the telescopic inner plate 83 to slide and rise within the sliding telescopic cavity 84 of the fixed outer shell 82, almost reaching the level of the transport box 7. This facilitates placing the take-up roller 2, with the intercepting film 1 wound on it, at the top of the telescopic inner plate 83's latch structure 810, or removing the intercepting film 1 and the take-up roller 2 as a whole. Then, after deflating the airbag 89, the telescopic inner plate 83 slides and lowers within the sliding telescopic cavity 84 of the fixed outer shell 82, allowing the intercepting film 1 and the take-up roller 2 to fall completely into the transport box 7, facilitating long-term storage and transportation.

[0052] A mounting rotating sleeve 3 is rotatably installed on the outer wall of both ends of the take-up roller 2. The bayonet structure 810 is an arc-shaped bayonet. The mounting rotating sleeve 3 is placed in the arc-shaped bayonet. Since the mounting rotating sleeve 3 and the take-up roller 2 rotate relative to each other, the operator can hold the mounting rotating sleeve 3 and smoothly rotate and pull out the intercepting film 1 wound on the take-up roller 2 for cutting and use, thus improving the convenience of product use.

[0053] Example 2:

[0054] like Figure 7 As shown: As an optimization, with other structures the same as in Embodiment 1, the above-mentioned fixing mechanism 4 is replaced by a mounting kit 41. The mounting kit 41 has a mounting threaded hole 42 in the middle, and the long screw 94 cooperates with the mounting threaded hole 42. The side of the mounting kit 41 is also connected to an elastic rope sleeve 43. This structure is used in blasting areas where the soil layer is thin or where there is rock. In such blasting areas, the insertion rod 402 in Embodiment 1 is difficult to insert. Therefore, the elastic rope sleeve 43 needs to be directly fitted onto various irregular protruding stones or hard protrusions to achieve fixation. Moreover, the elastic force of the elastic rope sleeve 43 can still intercept the impact force of the fragments suffered by the membrane 1 through deformation, forming a buffering effect.

[0055] Although embodiments of the 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 invention, the scope of which is defined by the appended claims.

Claims

1. A blasting protection mechanism, characterized by: It includes a barrier film (1), a take-up roller (2) and a transport box (7), wherein the barrier film (1) and the take-up roller (2) are placed in the transport box (7) and the barrier film (1) is wound on the take-up roller (2); A pre-reserved hole structure (101) is evenly provided on both sides of the intercepting membrane (1), and a counterweight structure (9) is installed in the pre-reserved hole structure (101). A fixing mechanism (4) is also provided at the bottom of the counterweight structure (9). The counterweight structure (9) is provided with an upper cover block (91) and a lower cover block (92). A short screw (93) and a long screw (94) are respectively provided on the upper and lower surfaces of the lower cover block (92). A threaded hole (95) is provided in the middle of the lower surface of the upper cover block (91). The short screw (93) passes through the reserved hole structure (101) and engages with the threaded hole (95). The long screw (94) is used to install the fixing mechanism (4). The fixing mechanism (4) is provided with a pressing mounting rod (5) and a cutting rod (402). The top of the pressing mounting rod (5) is provided with a mounting screw hole (51), which cooperates with the long screw (94). The top end of the insertion rod (402) is provided with an installation hole (401), and the pressing installation rod (5) is slidably installed in the installation hole (401). The bottom of the pressing installation rod (5) is connected to a tension spring (6), and the other end of the tension spring (6) is fixedly connected to the bottom inner wall of the installation hole (401). The fixing mechanism (4) is provided with an installation kit (41), and the installation kit (41) has an installation threaded hole (42) in the middle. The long screw (94) cooperates with the installation threaded hole (42), and the side of the installation kit (41) is also connected with an elastic rope sleeve (43).

2. The blast protection mechanism according to claim 1, characterized in that: The intercepting membrane (1) is used in a stacked manner, and the pre-reserved hole structure (101) after stacking is aligned and overlapped.

3. A blast containment mechanism according to claim 1, wherein: The inner end wall of the mounting hole (401) is provided with a limiting groove (4011), and the outer wall of the pressing mounting rod (5) is provided with a corresponding limiting protrusion (501). The limiting protrusion (501) is slidably disposed in the limiting groove (4011).

4. A blast containment mechanism according to claim 1, wherein: The transport box (7) is provided with a barrier film placement area (71), a fixed equipment placement area (72) and a cutting tool placement area (73) in sequence. The barrier film placement area (71), the fixed equipment placement area (72) and the cutting tool placement area (73) are separated by a partition plate. A support plate structure (8) is provided in the barrier film placement area (71), and the winding roller (2) is supported on the support plate structure (8).

5. A blast protection mechanism according to claim 4, wherein: The mounting plate structure (8) includes two mounting plates (81), which are respectively set on both sides of the interceptor membrane placement area (71). The mounting plate (81) includes a fixed outer shell plate (82) and a telescopic inner plate (83). A sliding telescopic cavity (84) is provided on the fixed outer shell plate (82). The telescopic inner plate (83) is slidably installed in the sliding telescopic cavity (84). A sealing limit block (85) is also provided at the bottom of the telescopic inner plate (83). The top of the telescopic inner plate (83) extends from the top of the fixed outer shell plate (82). A bayonet structure (810) is provided at the middle position of the top of both the fixed outer shell plate (82) and the telescopic inner plate (83). The bottom of the sliding telescopic cavity (84) is also provided with a connecting airway (86), which is connected to an air pipe structure (87). The air pipe structure (87) is connected to an inflatable airbag (88) and a deflation valve (89). The inflatable airbag (88) and the deflation valve (89) are connected in parallel, and the sliding telescopic cavities (84) of the two mounting plates (81) are interconnected.

6. A blast protection mechanism according to claim 5, wherein: A mounting rotating sleeve (3) is rotatably provided on the outer wall of both ends of the take-up roller (2). The bayonet structure (810) is an arc-shaped bayonet, and the mounting rotating sleeve (3) is placed in the arc-shaped bayonet.

7. A blast containment mechanism according to claim 1, wherein: A universal roller mechanism (10) is also provided at the bottom of the transport box (7).

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