Movable protective shed for earth-rock blasting of foundation pit

Abstract

The utility model discloses a movable protective shed for earth-rock blasting of a foundation pit, which realizes smooth movement of a protective shed main body by arranging rail wheels matched with a rail frame at the bottom of a supporting structure, greatly simplifies the moving process of the protective shed, reduces the use of manpower or machinery, and reduces the moving cost and time cost. The rail frame is fixedly installed on the top beam, a stable foundation is provided for movement of the protective shed, an operator only needs to control the protective shed body to move along the rail, position adjustment can be easily achieved, operation convenience and efficiency are improved, and the protective shed can be conveniently and rapidly moved along with blasting operation. The position of the protective shed can be rapidly adjusted according to the position of a blasting point so as to meet different blasting protection requirements, so that the protective shed can be rapidly and accurately moved to a designated position, timely and effective protection is provided for blasting operation, and the overall operation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of protective shed technology, and more specifically, to a protective shed for blasting activities in foundation pits. Background Technology

[0002] In the construction of urban infrastructure such as subway stations and underground utility tunnels, excavation of the foundation pit is a crucial step. Especially in urban centers, due to the complex surrounding environment, dense buildings, and numerous residential and commercial areas, the impact of blasting operations on the surrounding area must be strictly controlled during construction. To prevent debris from flying during blasting, protective sheds are usually erected outside the foundation pit. The traditional method is to directly cover the outside of the pit with large pieces of blasting steel plates to shield it from debris. While this method is simple and direct, it has the following problems in practice:

[0003] First, blasting steel plates are usually large in size, with a single plate reaching several meters in length and considerable thickness, resulting in a heavy weight. During the transfer process, large lifting equipment or multiple people are required to carry them, which increases the difficulty and cost of construction.

[0004] Second, due to the large size of the blasting steel plates, they cannot be moved using conventional manual tools and must be handled by mechanical hoisting equipment. This not only increases construction time but may also cause traffic congestion at the construction site, affecting the normal progress of other procedures.

[0005] Third, when building a protective shed, multiple blasting steel plates need to be installed in sequence. However, due to the large size of each steel plate, the installation process is complicated and prone to problems such as inaccurate positioning and loose splicing, which affect the protective effect.

[0006] Fourth, during the transfer and installation process, the large weight and volume of the blasting steel plates make them prone to slipping, tipping, and other safety accidents, posing safety hazards to construction workers. Moreover, due to their large size and weight, the blasting steel plates are difficult to transfer and dismantle, resulting in a low reuse rate between different construction stages or projects, which increases material waste and construction costs. Utility Model Content

[0007] In order to overcome the shortcomings of the existing technology, this utility model provides a mobile protective shed for blasting of foundation pits and earth and rock, so as to solve the problems of poor protection effect and difficulty in moving existing protective sheds.

[0008] The technical solution of this utility model is as follows: A protective shed for blasting in foundation pits, comprising:

[0009] A track frame is arranged along the Y-axis direction and is fixedly installed on the cap beam;

[0010] The main body of the protective shed is movable along the extension direction of the track frame;

[0011] The protective shed includes four supporting structures and a truss structure fixedly installed between the four supporting structures. Each supporting structure has a track wheel at its bottom that cooperates with the track frame.

[0012] Furthermore, the truss structure includes a first support member, a second support member, a third support member, and a plate. The first support member is arranged along the X-axis direction, the second support member is arranged above the first support member, and a plurality of diagonal bracing members are arranged between the first support member and the second support member. One end of each diagonal bracing member is connected to the first support member, and the other end is connected to the second support member. A plurality of third support members are provided, and all of the plurality of third support members are installed on the second support member. Each of the third support members is arranged along the Y-axis direction, and the plate is installed on the third support member.

[0013] Furthermore, the second support member includes a first support portion and a second support portion disposed opposite to each other. A support rod disposed along the Z-axis is mounted on the first support member. Both the first support portion and the second support portion are connected to the top of the support rod. Both the first support portion and the second support portion are inclined from the top of the support rod toward the first support member.

[0014] Furthermore, the support structure includes a bottom beam and a column. The bottom beam is arranged along the Y-axis and is located above the track frame. The track wheel is installed below the bottom beam, and the column is installed on the bottom beam.

[0015] Furthermore, the thickness of the plate is 3mm to 5mm.

[0016] Furthermore, both the first support member and the second support member are square tubes.

[0017] Furthermore, the angle between the straight line connecting the toe of the deep-hole bench blasting slope and the outer extension of the plate body and the horizontal plane is less than or equal to 20°.

[0018] Furthermore, the angle between the line connecting the last row of holes in the deep-hole stepped blasting and the line extending from the outer edge of the plate body and the horizontal plane is less than or equal to 40°.

[0019] Furthermore, the thickness of the first support member is 2.5 mm.

[0020] Furthermore, the thickness of the second support member is 2.5 mm.

[0021] The beneficial effects of this utility model according to the above-described solution are as follows: This utility model provides a protective shed for blasting in foundation pits, comprising a track frame and a main body of the protective shed arranged along the Y-axis. The track frame is fixedly installed on the capping beam. The main body of the protective shed can move along the extension direction of the track frame. The main body of the protective shed includes four supporting structures and a truss structure fixedly installed between the four supporting structures. Each supporting structure has a track wheel at its bottom that cooperates with the track frame. This design, through the four supporting structures and the truss structure set on the four supporting structures, forms a relatively stable overall structure, enhancing the structural strength of the protective shed and enabling it to provide reliable protection against dangerous factors such as shock waves and flying rocks generated by blasting, reducing potential harm to the surrounding environment and personnel. Secondly, by setting track wheels at the bottom of the support structure to cooperate with the track frame, the main body of the protective shed can be moved smoothly, which greatly simplifies the movement process, reduces the use of manpower or machinery, and lowers the movement cost and time cost. Moreover, since the track frame is fixedly installed on the crown beam, it provides a stable foundation for the movement of the protective shed. Operators only need to control the main body of the protective shed to move along the track to easily adjust its position, which improves the convenience and efficiency of operation. As the blasting operation proceeds, the position of the protective shed can be quickly adjusted according to the location of the blasting point to meet different blasting protection needs, so that the protective shed can be moved quickly and accurately to the designated location, providing timely and effective protection for the blasting operation and improving the overall operation efficiency. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of the protective shed in an embodiment of this utility model;

[0024] Figure 2 for Figure 1 A magnified view of part A;

[0025] Figure 3 for Figure 1 A magnified view of part B;

[0026] Figure 4 This is a schematic diagram of the protective covering on the top of the foundation pit.

[0027] In the diagram, 1 is the track frame; 2 is the cap beam; 3 is the main body of the protective shed; 31 is the supporting structure; 311 is the bottom beam; 312 is the column; 32 is the truss structure; 321 is the first support member; 322 is the second support member; 3221 is the first support part; 3222 is the second support part; 323 is the third support member; 324 is the plate; 325 is the diagonal brace; and 33 is the track wheel. Detailed Implementation

[0028] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of the present invention by way of example, but should not be used to limit the scope of the present invention, that is, the present invention is not limited to the described embodiments.

[0029] To better understand this utility model, the following description, in conjunction with the accompanying drawings and embodiments, will further illustrate the present utility model:

[0030] See Figures 1-4 As shown in the figure, the present invention provides a protective shed for blasting of earth and rock in a foundation pit, which includes a track frame 1 and a protective shed body 3 arranged along the Y-axis.

[0031] Specifically, the track frame 1 is fixedly installed on the crown beam 2; the protective shed body 3 can move along the extension direction of the track frame 1; the protective shed body 3 includes four support structures 31 and a truss structure 32 fixedly installed between the four support structures 31, and each support structure 31 has a track wheel 33 at its bottom that cooperates with the track frame 1.

[0032] This utility model provides a protective shed for blasting in foundation pits. Through four supporting structures 31 and truss structures 32 mounted on these structures, a relatively stable overall structure is formed, enhancing the structural strength of the shed and providing reliable protection against shock waves, flying rocks, and other hazards generated by blasting, reducing potential harm to the surrounding environment and personnel. Secondly, by installing track wheels 33 at the bottom of the supporting structures 31 that cooperate with the track frame 1, smooth movement of the shed body 3 is achieved, greatly simplifying the movement process, reducing the use of manpower or machinery, and lowering movement costs and time. Furthermore, since the track frame 1 is fixedly installed on the crown beam 2, it provides a stable foundation for the movement of the shed. Operators only need to control the shed body 3 to move along the track to easily adjust its position, improving operational convenience and efficiency. As blasting operations proceed, the position of the shed can be quickly adjusted according to the location of the blasting point to meet different blasting protection needs, enabling the shed to move quickly and accurately to the designated location, providing timely and effective protection for blasting operations and improving overall operational efficiency.

[0033] In one embodiment, the truss structure 32 includes a first support member 321, a second support member 322, a third support member 323, and a plate 324. The first support member 321 is arranged along the X-axis direction, the second support member 322 is arranged above the first support member 321, and a plurality of diagonal bracing members 325 are arranged between the first support member 321 and the second support member 322. One end of each diagonal bracing member 325 is connected to the first support member 321, and the other end is connected to the second support member 322. A plurality of third support members 323 are arranged, and all the third support members 323 are installed on the second support member 322. Each third support member 323 is arranged along the Y-axis direction, and the plate 324 is installed on the third support member 323.

[0034] Specifically, the first support member 321 is positioned along the X-axis, providing basic support for the truss structure 32. The second support member 322 is positioned above the first support member 321 and connected to the first support member 321 via multiple diagonal bracing members 325. The design of the diagonal bracing members 325 effectively distributes the vertical load onto the first support member 321, enhancing the vertical stability of the structure. Simultaneously, the diagonal bracing members 325 also resist lateral forces, preventing deformation of the structure in the horizontal direction. The first support member 321, the diagonal bracing members 325, and the second support member 322 form a stable triangular support system, greatly improving the stability of the entire truss structure 32.

[0035] In one embodiment, the second support member 322 includes a first support portion 3221 and a second support portion 3222 disposed opposite to each other. A support rod disposed along the Z-axis is mounted on the first support member 321. Both the first support portion 3221 and the second support portion 3222 are connected to the top of the support rod. Both the first support portion 3221 and the second support portion 3222 are inclined from the top of the support rod toward the direction closer to the first support member 321.

[0036] It should be noted that the X-axis, Y-axis and Z-axis are orthogonal to each other (i.e., at a 90-degree angle to each other). The X-axis represents the direction from left to right, that is, the horizontal direction; the Y-axis represents the direction from front to back; and the Z-axis represents the vertical direction, that is, the direction perpendicular to the XY plane.

[0037] The second support member 322 is divided into a first support part 3221 and a second support part 3222 arranged opposite to each other. This design increases the surface area of ​​the top structure, which helps to block rainwater. Both the first support part 3221 and the second support part 3222 are inclined from the top of the support rod towards the first support member 321, so that when rainwater falls on the second support member 322, it can flow quickly down the slope under the action of gravity, instead of accumulating at the top or seeping into the structure. This improves drainage efficiency and avoids the formation of puddles on the top of the structure. It also reduces problems such as corrosion and mold caused by long-term water accumulation and extends the service life of the truss structure 32.

[0038] It is worth mentioning that preventing rainwater from seeping into the blasting area is crucial during blasting operations, as moisture can affect the performance of the explosives and the blasting effect. The above-described structural design, through the inclined first support 3221 and second support 3222, effectively blocks rainwater, reducing the possibility of rainwater dripping directly onto the blasting point. Simultaneously, the inclined support surfaces guide rainwater away from the blasting point, further reducing the risk of rainwater infiltration.

[0039] In one embodiment, the support structure 31 includes a bottom beam 311 and a column 312. The bottom beam 311 is arranged along the Y-axis and is located above the track frame 1. Track wheels 33 are installed below the bottom beam 311, and the column 312 is installed on the bottom beam 311.

[0040] The thickness of the plate 324 is 3mm to 5mm, and both the first support member 321 and the second support member 322 are square tubes.

[0041] In this embodiment, the angle α between the straight line connecting the slope toe of the deep-hole bench blasting and the outer extension of the plate 324 and the horizontal plane is less than or equal to 20°; the angle b between the line connecting the last row of holes of the deep-hole bench blasting and the outer extension of the plate 324 and the horizontal plane is less than or equal to 40°.

[0042] Specifically, deep-hole bench blasting is a commonly used blasting method in open-pit mining and civil engineering. It involves drilling deep holes in the rock, loading explosives, and then detonating them to break the rock. The characteristic of bench blasting is that the rock blocks formed by the blasting are relatively uniform in size, which facilitates subsequent loading and transportation.

[0043] The toe of the slope refers to the bottom edge of the blasting bench, i.e., the starting point of the rock slope formed after blasting. The straight line connecting the toe of the slope and the outer edge of plate 324 can be understood as an imaginary line from the bottom edge of the blasting bench to the outer edge of plate 324, used to measure the slope inclination angle generated by the blasting operation. The angle between the straight line connecting the toe of the slope and the outer edge of plate 324 and the horizontal plane must be less than or equal to 20°; the angle between the line connecting the last row of borehole openings of deep-hole bench blasting and the outer edge of plate 324 and the horizontal plane is less than or equal to 40°. This design ensures that the slope formed by the blasting operation is not too steep, thereby avoiding safety hazards such as slope instability and landslides. Moreover, this design limits the flight distance and height of the rocks and soil generated by the blasting, thereby reducing the risk of harm to the surrounding environment and personnel.

[0044] In this embodiment, the thickness of the first support member 321 is 2.5 mm; the thickness of the second support member 322 is 2.5 mm.

[0045] It should be noted that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product is usually placed in during use, or the orientation or positional relationship that is commonly understood by those skilled in the art, or the orientation or positional relationship that the product is usually placed in during use. It is only for the purpose of facilitating the description of this application and simplifying the description, and is not intended to 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, it should not be construed as a limitation of this application.

[0046] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

[0047] The present utility model patent has been described above with reference to the accompanying drawings. Obviously, the implementation of the present utility model patent is not limited to the above-described manner. Any improvements made by adopting the inventive concept and technical solution of the present utility model patent, or the direct application of the inventive concept and technical solution of the present utility model patent to other occasions without modification, are all within the protection scope of the present utility model.

Claims

1. A protective shed for foundation earthwork blasting activities, characterized in that, The utility model relates to a kind of deep hole bench blasting protection shed, including: Track frame arranged along Y axis direction, the track frame is fixedly installed on crown beam; Protective shed main body, the protective shed main body can be moved along the extension direction of the track frame; Wherein, the protective shed main body includes four support structures and truss structure fixedly installed between four support structures, the bottom of each support structure is provided with track wheel matched with the track frame;The support structure includes bottom beam and stand, the bottom beam is arranged along Y axis direction, and the bottom beam is above the track frame, the track wheel is installed below the bottom beam, and the stand is installed on the bottom beam;The truss structure includes first support piece, second support piece, third support piece and plate body, the first support piece is arranged along X axis direction, the second support piece is arranged above the first support piece, a plurality of inclined bracing members are arranged between the first support piece and the second support piece, one end of each inclined bracing member is connected with the first support piece, the other end is connected with the second support piece, the third support piece is provided with a plurality of, a plurality of third support pieces are all installed on the second support piece, and each third support piece is arranged along Y axis direction, and the plate body is installed on the third support piece.

2. The foundation earthwork blasting activity protection shed according to claim 1, characterized in that: The second support piece includes oppositely arranged first support part and second support part, support rod arranged along Z axis direction is installed on the first support piece, the first support part and the second support part are both connected with the top of the support rod, and the first support part and the second support part are both arranged in the direction of being close to the first support piece from the top of the support rod.

3. The pit earthwork blasting activity protection shed according to claim 1, characterized in that: The thickness of the plate body is 3mm-5mm.

4. The foundation earthwork blasting activity protection shed according to claim 1, characterized in that: The first support piece and the second support piece are both square tubes.

5. The protective shed for foundation earthwork blasting activities according to claim 1, characterized in that: The angle between the straight line formed by the slope foot of deep hole bench blasting and the outer extension of the plate body and the horizontal plane is less than or equal to 20°.

6. The protective shed for foundation earthwork blasting activities according to claim 1, characterized in that: The angle between the connecting line of the last row hole of deep hole bench blasting and the outer extension of the plate body and the horizontal plane is less than or equal to 40°.

7. The pit earthwork blasting activity protection shed according to claim 1, characterized in that: The thickness of the first support piece is 2.5mm.

8. The pit earthwork blasting activity protection shed according to claim 1, characterized in that: The thickness of the second support piece is 2.5mm.

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