Arch support for preventing plugging of concrete initial spraying

Abstract

This utility model belongs to the field of arch frame anti-blocking technology, specifically an arch frame anti-blocking device for initial concrete spraying. It includes a base frame, one end of which is rotatably connected to a guide plate, and the other end of which is slidably fitted with an extension frame. One end of the extension frame is rotatably connected to a first screw, one end of which passes through the extension frame and the other end of the first screw passes through the base frame and is threadedly connected to the inner cavity of the base frame. By setting the guide plate, during initial concrete spraying, the sprayed concrete is guided between the arch frame and the arch crown, ensuring that the concrete fully fills the space between the arch frame and the arch crown, preventing blockage and ensuring construction quality. Furthermore, the extension frame and the first screw allow adjustment of the base frame's length to accommodate arch frames and arch crowns of different heights. Simultaneously, the angle of the guide plate can be adjusted via an adjustment mechanism to ensure that the concrete fills the space between the arch crown and the arch frame.

Description

Technical Field

[0001] This utility model relates to the field of arch frame anti-blocking technology, specifically an arch frame anti-blocking device for initial spraying of concrete. Background Technology

[0002] The arch frame anti-blocking technology for initial shotcrete application achieves effective control through multi-dimensional process optimization. The steel arch frame design focuses on matching the cross-sectional height with the shotcrete thickness, reserving a protective layer, and ensuring that the arch foot rests on the original soil or that steel plates are installed to adjust the elevation to avoid backfilling with soil. The spacing is optimized according to the surrounding rock conditions to enhance flexible support.

[0003] In existing technologies, the arch is the highest point of the tunnel structure. When spraying concrete, the concrete tends to flow downwards due to gravity, resulting in incomplete filling of the gap between the arch and the surrounding rock. The gap between the arch and the steel arch frame is also small, making it difficult for the concrete to fill the gap fully during spraying, which can easily cause blockage and affect the construction quality. Therefore, an arch frame anti-blocking device for initial spraying of concrete is proposed to address the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, such as the gap between the arch and the surrounding rock not being filled densely, and the gap between the arch and the steel arch frame being small, making it difficult for the concrete to be fully filled during spraying and easily causing blockage, thus affecting the construction quality, this utility model proposes an arch frame anti-blocking device for initial concrete spraying.

[0005] The technical solution adopted by this utility model to solve its technical problem is: an arch frame anti-blocking device for initial spraying of concrete, including a base frame, a guide plate rotatably connected to one end of the base frame, an extension frame slidably sleeved on the other end of the base frame, a first screw rotatably connected to one end of the extension frame, one end of the first screw penetrating the extension frame, and the other end of the first screw penetrating the base frame and threadedly connected to the inner cavity of the base frame. An adjustment mechanism is provided on the surface of the base frame, and the adjustment mechanism is used in conjunction with the guide plate. The adjustment mechanism includes a slide rod slidably connected to the surface of the base frame. A first bracket is fixedly installed on the surface of the base frame. A second screw is rotatably sleeved inside the first bracket. One end of the second screw passes through the slide rod and is threadedly connected to the inner cavity of the slide rod. A connecting sleeve is fixedly connected to the other end of the second screw. A connecting frame is fixedly installed on the surface of the extension frame. A connecting rod is rotatably sleeved inside the inner cavity of the connecting frame. One end of the connecting rod is slidably connected to the inside of the connecting sleeve. A transmission assembly is fixedly connected to one end of the slide rod. The transmission assembly works in conjunction with the guide plate.

[0006] Preferably, a first positioning block is fixedly mounted on the surface of the first screw, and the first positioning block is rotatably connected inside the extension frame.

[0007] Preferably, a second positioning block is fixedly mounted on the surface of the second screw, and the second positioning block is rotatably connected inside the first bracket.

[0008] Preferably, a limiting block is fixedly installed on the inner wall of the connecting sleeve, a limiting groove is formed on the surface of the connecting rod, and the surface of the limiting block is slidably connected to the inner cavity of the limiting groove.

[0009] Preferably, a connecting block is fixedly installed on the surface of the connecting rod, and the connecting block is rotatably connected inside the connecting frame.

[0010] Preferably, the transmission assembly includes a fixed frame fixedly connected to one end of the slide rod, a support rod rotatably connected inside the fixed frame, a fixed plate fixedly connected to the surface of the guide plate, a support groove formed on the surface of the fixed plate, and the surface of the support rod slidably connected to the inner cavity of the support groove.

[0011] Preferably, both ends of the support rod are fixedly connected to support blocks, and the support blocks are rotatably connected inside the fixed frame.

[0012] The advantages of this utility model are: 1. By setting a guide plate, this utility model guides the sprayed concrete between the arch frame and the arch crown during the initial concrete spraying, ensuring that the concrete fully fills the space between the arch frame and the arch crown, thus avoiding blockage and ensuring construction quality. Furthermore, the length of the base frame can be adjusted by the extension frame and the first screw to accommodate arch frames and arch crowns of different heights. At the same time, the angle of the guide plate can be adjusted by the adjustment mechanism to ensure that the concrete can fill the space between the arch crown and the arch frame. 2. This utility model can adjust the angle of the guide plate by setting an adjustment mechanism. Rotating the support rod causes the connecting sleeve to rotate through the limiting block and the limiting groove. The connecting sleeve drives the second screw to rotate, so that the second screw drives the slide rod to slide on the surface of the base frame. Through the movement of the slide rod, the fixed frame moves the fixed plate through the support rod and the support groove, so that the guide plate rotates at one end of the base frame to adjust the angle of the guide plate, thereby making it convenient for workers to stand in a safe position to operate. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, 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.

[0014] Figure 1This is a schematic diagram of the arch frame anti-blocking device for initial spraying of concrete according to this utility model; Figure 2 This is a schematic diagram of the base frame structure of this utility model; Figure 3 This is a schematic diagram of the extension frame structure of this utility model; Figure 4 This is a schematic diagram of the adjustment mechanism structure of this utility model; Figure 5 This utility model Figure 4 A magnified structural diagram of part A; Figure 6 This is a schematic diagram of the transmission component structure of this utility model.

[0015] In the diagram: 1. Base frame; 2. Guide plate; 3. Extension frame; 31. First screw; 32. First positioning block; 4. Adjustment mechanism; 41. Slide rod; 42. First bracket; 43. Second screw; 4301. Second positioning block; 44. Connecting sleeve; 4401. Limiting block; 4402. Limiting groove; 45. Connecting frame; 46. Connecting rod; 4601. Connecting block; 47. Transmission assembly; 4701. Fixing frame; 4702. Fixing plate; 4703. Support rod; 4704. Support groove; 4705. Support block. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0017] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail. This application discloses an arch-frame anti-blocking device for initial shotcreting of concrete. (Refer to...) Figure 1 , Figure 2 , Figure 3 and Figure 4 An arch frame anti-blocking device for initial spraying of concrete includes a base frame 1, a guide plate 2 rotatably connected to one end of the base frame 1, an extension frame 3 slidably sleeved on the other end of the base frame 1, a first screw 31 rotatably connected to one end of the extension frame 3, one end of the first screw 31 passing through the extension frame 3, and the other end of the first screw 31 passing through the base frame 1 and threadedly connected to the inner cavity of the base frame 1. An adjustment mechanism 4 is provided on the surface of the base frame 1, and the adjustment mechanism 4 is used in conjunction with the guide plate 2. The adjustment mechanism 4 includes a slide rod 41 slidably connected to the surface of the base frame 1. A first bracket 42 is fixedly installed on the surface of the base frame 1. A second screw 43 is rotatably sleeved inside the first bracket 42. One end of the second screw 43 passes through the slide rod 41 and is threadedly connected to the inner cavity of the slide rod 41. A connecting sleeve 44 is fixedly connected to the other end of the second screw 43. A connecting frame 45 is fixedly installed on the surface of the extension frame 3. A connecting rod 46 is rotatably sleeved inside the inner cavity of the connecting frame 45. One end of the connecting rod 46 is slidably connected to the inside of the connecting sleeve 44. A transmission assembly 47 is fixedly connected to one end of the slide rod 41. The transmission assembly 47 is used in conjunction with the guide plate 2. When initial shotcreting of concrete is required, the height of the guide plate 2 is adjusted according to the height of the arch and the arch frame. The first screw 31 is rotated to adjust the relative position between the extension frame 3 and the base frame 1, so that the extension frame 3 can adjust the length of the base frame 1. Then, the guide plate 2 is placed between the arch and the arch frame, and the support rod 4703 is rotated as needed. The support rod 4703 drives the connecting sleeve 44 to rotate, and the connecting sleeve 44 drives the second screw 43 to rotate. The second screw 43 drives the sliding rod 41 to move, so that the sliding rod 41 drives the guide plate 2 to rotate at one end of the base frame 1 through the transmission assembly 47, thereby adjusting the angle of the guide plate 2 so that the workers can stand in a safe position. Then, during the initial shotcreting, the concrete can enter the space between the arch and the arch frame under the guidance of the guide plate 2 to ensure that the space between the arch and the arch frame is completely filled, avoid blockage, and ensure construction quality.

[0018] Reference Figure 3 A first positioning block 32 is fixedly installed on the surface of the first screw 31. The first positioning block 32 is rotatably connected inside the extension frame 3. The first positioning block 32 can effectively stabilize the position of the first screw 31 inside the extension frame 3, and prevent the extension frame 3 from shifting laterally and affecting the relative position of the extension frame 3 and the base frame 1.

[0019] Reference Figure 2 and Figure 4 A second positioning block 4301 is fixedly installed on the surface of the second screw 43. The second positioning block 4301 is rotatably connected inside the first bracket 42. By rotatably connecting the second positioning block 4301 inside the first bracket 42, the first bracket 42 can stabilize the position of the second screw 43, avoid the second screw 43 from lateral displacement affecting the position of the slide bar 41, and thus ensure the stability of the guide plate 2.

[0020] Reference Figure 4 and Figure 5A limiting block 4401 is fixedly installed on the inner wall of the connecting sleeve 44, and a limiting groove 4402 is opened on the surface of the connecting rod 46. The surface of the limiting block 4401 is slidably connected to the inner cavity of the limiting groove 4402. Through the slidable connection between the surface of the limiting block 4401 and the inner cavity of the limiting groove 4402, the connecting rod 46 can drive the connecting sleeve 44 to rotate through the limiting block 4401 and the limiting groove 4402. At the same time, when adjusting the position of the extension frame 3, the connecting rod 46 can slide inside the connecting sleeve 44.

[0021] Reference Figure 2 and Figure 4 A connecting block 4601 is fixedly installed on the surface of the connecting rod 46. The connecting block 4601 is rotatably connected to the inside of the connecting frame 45. By rotatably connecting the connecting block 4601 to the inside of the connecting frame 45, the position of the connecting rod 46 can be stabilized, preventing the connecting rod 46 from lateral displacement. At the same time, the connecting rod 46 can follow the displacement of the extension frame 3 through the connecting frame 45 to adapt to the position of the extension frame 3.

[0022] Reference Figure 6 The transmission assembly 47 includes a fixed frame 4701 fixedly connected to one end of the slide rod 41. A support rod 4703 is rotatably connected inside the fixed frame 4701. A fixed plate 4702 is fixedly connected to the surface of the guide plate 2. A support groove 4704 is formed on the surface of the fixed plate 4702. The surface of the support rod 4703 is slidably connected to the inner cavity of the support groove 4704. Support blocks 4705 are fixedly connected to both ends of the support rod 4703. The support blocks 4705 are rotatably connected inside the fixed frame 4701. When the slide rod 41 moves, the slide rod 41 drives the fixed frame 4701 to move simultaneously. The fixed frame 4701 drives the support rod 4703 to move simultaneously through the support blocks 4705. This allows the support rod 4703 to move the fixed plate 4702 through the support groove 4704, thereby causing the guide plate 2 to rotate at one end of the base frame 1, thus achieving the function of adjusting the angle of the guide plate 2.

[0023] Working principle: When initial concrete spraying is required between the arch frame and the arch crown, the height of the guide plate 2 is adjusted according to the height of the arch crown and the arch frame. The first screw 31 is rotated, and its position is stabilized by the first positioning block 32. The relative position between the extension frame 3 and the base frame 1 is adjusted by the first screw 31, so that the extension frame 3 can adjust the length of the base frame 1. When adjusting the position of the extension frame 3, the connecting frame 45 drives the connecting rod 46 to move simultaneously through the connecting block 4601, so that the connecting rod 46 slides inside the connecting sleeve 44. Then, the angle of the guide plate 2 is adjusted according to the standing position of the worker, and the support rod 4703 is rotated. The support rod 4703 drives the connecting sleeve 44 to rotate through the limiting block 4401 and the limiting groove 4402. 44 drives the second screw 43 to rotate, and the position of the second screw 43 is stabilized by the first bracket 42 and the second positioning block 4301, so that the second screw 43 drives the slide rod 41 to slide on the surface of the base frame 1. The movement of the slide rod 41 drives the fixed frame 4701 to move. The fixed frame 4701 drives the support rod 4703 to move through the support block 4705. The support rod 4703 drives the fixed plate 4702 to move through the support groove 4704, so that the guide plate 2 rotates at one end of the base frame 1, thereby achieving the function of adjusting the angle of the guide plate 2 so that the workers can stand in a safe position. During the initial spraying process, the concrete can enter the space between the arch and the arch frame under the guidance of the guide plate 2 to ensure that the space between the arch and the arch frame is completely filled, avoid blockage, and ensure construction quality.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An arch-frame anti-blocking device for initial shotcreting of concrete, characterized in that: Includes a base frame (1), one end of which is rotatably connected to a guide plate (2), and the other end of which is slidably fitted with an extension frame (3). One end of the extension frame (3) is rotatably connected to a first screw (31), one end of which passes through the extension frame (3) and the other end of which passes through the base frame (1) and is threadedly connected to the inner cavity of the base frame (1). An adjustment mechanism (4) is provided on the surface of the base frame (1), and the adjustment mechanism (4) is used in conjunction with the guide plate (2). The adjustment mechanism (4) includes a slide rod (41) slidably connected to the surface of the base frame (1). A first bracket (42) is fixedly installed on the surface of the base frame (1). A second screw (43) is rotatably sleeved inside the first bracket (42). One end of the second screw (43) passes through the slide rod (41) and is threadedly connected to the inner cavity of the slide rod (41). The other end of the second screw (43) is fixedly connected to a connecting sleeve (44). A connecting frame (45) is fixedly installed on the surface of the extension frame (3). A connecting rod (46) is rotatably sleeved inside the inner cavity of the connecting frame (45). One end of the connecting rod (46) is slidably connected to the inside of the connecting sleeve (44). One end of the slide rod (41) is fixedly connected to a transmission assembly (47). The transmission assembly (47) is used in conjunction with the guide plate (2).

2. The arch support unblocker for concrete initial spraying according to claim 1, characterized in that: A first positioning block (32) is fixedly installed on the surface of the first screw (31), and the first positioning block (32) is rotatably connected to the inside of the extension frame (3).

3. The arch support unblocker for concrete initial spraying according to claim 1, characterized in that: The second screw (43) has a second positioning block (4301) fixedly mounted on its surface, and the second positioning block (4301) is rotatably connected to the inside of the first bracket (42).

4. The arch support unblocker for concrete initial spraying according to claim 1, characterized in that: A limiting block (4401) is fixedly installed on the inner wall of the connecting sleeve (44), and a limiting groove (4402) is opened on the surface of the connecting rod (46). The surface of the limiting block (4401) is slidably connected to the inner cavity of the limiting groove (4402).

5. The arch support unblocker for concrete initial spraying according to claim 1, characterized in that: A connecting block (4601) is fixedly installed on the surface of the connecting rod (46), and the connecting block (4601) is rotatably connected to the inside of the connecting frame (45).

6. The arch frame anti-blocking device for initial shotcrete application according to claim 1, characterized in that: The transmission assembly (47) includes a fixed frame (4701) fixedly connected to one end of the slide rod (41), a support rod (4703) is rotatably connected inside the fixed frame (4701), a fixed plate (4702) is fixedly connected to the surface of the guide plate (2), a support groove (4704) is opened on the surface of the fixed plate (4702), and the surface of the support rod (4703) is slidably connected to the inner cavity of the support groove (4704).

7. The arch support unblocker for concrete initial spraying according to claim 6, characterized in that: Both ends of the support rod (4703) are fixedly connected to support blocks (4705), and the support blocks (4705) are rotatably connected inside the fixed frame (4701).

Images