Concrete spraying device for tunnel construction

Abstract

The utility model discloses a concrete spraying device for tunnel construction, belongs to the technical field of concrete spraying, and aims to solve the problems that in the prior art, a mechanism for adjusting the spraying range of a spraying mechanism is lacked, the spraying range of the spraying mechanism is small, a tunnel is excavated in an arc shape, and the spraying mechanism cannot achieve spraying to the top. Comprising a workbench, a concrete sprayer is installed on the upper surface of the workbench, a second range adjusting assembly is installed on the upper surface of the concrete sprayer, and a mounting plate is rotationally connected to the upper portion of the second range adjusting assembly. The concrete spraying device for tunnel construction is convenient to use. The first range adjusting assembly and the second range adjusting assembly are used in cooperation, the spraying range of the spraying gun is expanded, concrete spraying on the top of the tunnel is achieved, the spraying gun does not need to be manually held by hand to be close to the excavation face during concrete spraying, the operation safety is guaranteed, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of concrete spraying, and in particular relates to a concrete spraying device used for tunnel construction. Background Art

[0002] After tunnel excavation, in order to prevent rocks and soil from falling and damaging the excavation surface and to ensure the safety of workers, it is necessary to install anchor rods, hanging nets and shotcrete on the tunnel excavation surface to ensure the stability of the excavation surface. Shotcrete requires the use of a concrete spraying device.

[0003] Chinese patent CN218324884U discloses a concrete spraying device for tunnel construction that is easy to fix, including a device body, a stirring mechanism and a spraying mechanism. A silo and a driving mechanism are fixedly installed on the top of the device body. The stirring mechanism includes a rotating pipe and a plurality of connecting pipes. The rotating pipe rotates and passes through the bottom of the silo.

[0004] In the above patent, the injection mechanism is set at the lower part of the device, and there is a lack of a mechanism for adjusting the injection range of the injection mechanism. The injection range is small, and since the tunnel is excavated in an arc shape, the injection mechanism cannot achieve injection on the top. Therefore, a technical measure is proposed to solve the problem that there is a lack of a mechanism for adjusting the injection range of the injection mechanism, the injection range is small, and since the tunnel is excavated in an arc shape, the injection mechanism cannot achieve injection on the top. Utility Model Content

[0005] (1) Technical issues to be solved

[0006] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a concrete spraying device for tunnel construction, aiming to solve the problems in the prior art that there is a lack of a mechanism for adjusting the spraying range of the spraying mechanism, the spraying range is small, and the tunnel is excavated in an arc shape, and the spraying mechanism cannot achieve spraying on the top.

[0007] (2) Technical solution

[0008] In order to solve the above technical problems, the utility model provides a concrete spraying device for tunnel construction, comprising a workbench, a concrete spraying machine is installed on the upper surface of the workbench, a second range adjustment component is installed on the upper surface of the concrete spraying machine, the upper part of the second range adjustment component is rotatably connected to a mounting plate, and a first range adjustment component is installed on the mounting plate. Thanks to the coordinated use of the first range adjustment component and the second range adjustment component, the spraying range of the spray gun is expanded, and the spraying of concrete on the top of the tunnel is realized. During concrete spraying, there is no need for manual hand-held spray guns to approach the excavation surface, thereby ensuring the safety of the operation and improving the practicality of the device.

[0009] Furthermore, a moving wheel is installed at the lower part of the workbench, an air compressor is installed at one end of the upper surface of the workbench away from the concrete spraying machine, a push handle is installed at the end of the workbench, and a connecting pipe is connected between the concrete spraying machine and the air compressor.

[0010] Furthermore, a stirring barrel is installed at the middle position of the upper surface of the workbench, and a feeding pipe is installed at the upper part of the stirring barrel.

[0011] Furthermore, a first motor is installed at the lower part of the mixing barrel, the first motor is connected to a mixing rod, a plurality of mixing plates are installed on the mixing rod, an inclined pipe is installed at the lower part of the side of the mixing barrel, and the inclined pipe is connected to the concrete spraying machine.

[0012] Furthermore, a discharge pipe is installed on the upper surface of the concrete spraying machine, the upper end of the discharge pipe is connected to a connecting hose, the connecting hose is connected to a spray gun, the spray gun outer sleeve is provided with a fixing ring, the lower part of the fixing ring is connected to a vertical rod, and the lower end of the vertical rod is fixedly connected to the first range adjustment component.

[0013] Furthermore, the first range adjustment component includes a second motor, which is fixedly mounted on the lower surface of the mounting plate, the second motor is connected to a rotating rod, the upper end of the rotating rod is connected to a second gear, the second gear is meshed with a first gear, the lower part of the first gear is connected to a rotating block, and the rotating block is rotatably connected to the mounting plate.

[0014] Furthermore, the second range adjustment component includes a hollow rod, which is fixedly mounted on the upper surface of the concrete spraying machine, a cylinder is mounted inside the hollow rod, a bottom block is mounted on the upper surface of the cylinder, a plug rod is mounted on the bottom block, the plug rod is rotatably connected to a vertical plate, the upper end of the vertical plate is fixedly connected to the lower part of the mounting plate, the upper end of the side surface of the hollow rod is connected to a side plate, the side plate is provided with a sliding groove, the sliding groove is slidably connected to a round rod, the end of the round rod is connected to a limiting block, the other end of the round rod is rotatably connected to a connecting plate, and the upper end of the connecting plate is fixedly connected to the lower end of the mounting plate.

[0015] (3) Beneficial effects

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model expands the spraying range of the spray gun through the coordinated use of the first range adjustment component and the second range adjustment component, realizes the spraying of concrete on the top of the tunnel, and when spraying concrete, there is no need for manual holding of the spray gun close to the excavation surface, thereby ensuring the safety of the operation and improving the practicability of the device. The second motor is started to rotate the spray gun, and when the spray gun is vertical to the curved surface of the tunnel, the second motor is turned off, and then the cylinder is started to drive the bottom block and the vertical plate to move upward. The upward movement of the vertical plate causes the mounting plate to drive the connecting plate to rotate along the round rod, and the vertical plate also rotates along the bottom block when moving upward, and the mounting plate also rotates when the connecting plate rotates. When the cylinder moves upward, it drives the round rod to slide along the slide groove toward the hollow rod. When the mounting plate is vertical, the spray gun is in a vertical state, and at this time the vertical plate rotates to a horizontal state, the connecting plate rotates to a horizontal state, and the round rod moves to the leftmost side. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the mixing barrel;

[0021] Figure 3 It is a schematic diagram of the structure of the first range adjustment component in a separated state;

[0022] Figure 4 is a schematic diagram of the structure of the second range adjustment component;

[0023] Figure 5 Schematic diagram of the connection structure between the vertical plate and the bottom block.

[0024] The markings in the accompanying drawings are: 1, workbench; 2, first range adjustment component; 3, second range adjustment component; 4, concrete sprayer; 5, mounting plate; 6, fixing ring; 7, spray gun; 8, connecting hose; 9, vertical rod; 10, discharge pipe; 11, moving wheel; 12, mixing barrel; 13, feeding pipe; 14, connecting pipe; 15, air compressor; 16, push handle; 17, stirring plate; 18, stirring rod; 19, first motor; 20, inclined tube; 201, second motor; 202, rotating block; 203, first gear; 204, second gear; 205, rotating rod; 301, hollow rod; 302, cylinder; 303, vertical plate; 304, side plate; 305, slide groove; 306, round rod; 307, limit block; 308, connecting plate; 309, bottom block; 310, plug rod. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] This specific implementation is a concrete spraying device for tunnel construction, and its structural schematic diagram is shown in FIG. Figure 1 , Figure 2 As shown, it includes a workbench 1, a concrete spraying machine 4 is installed on the upper surface of the workbench 1, a second range adjustment component 3 is installed on the upper surface of the concrete spraying machine 4, a mounting plate 5 is rotatably connected to the upper part of the second range adjustment component 3, a first range adjustment component 2 is installed on the mounting plate 5, a moving wheel 11 is installed at the lower part of the workbench 1, an air compressor 15 is installed at one end of the upper surface of the workbench 1 away from the concrete spraying machine 4, a push handle 16 is installed at the end of the workbench 1, a connecting pipe is connected between the concrete spraying machine 4 and the air compressor 15, and the workbench 1 is provided with a push handle 16. A mixing barrel 12 is installed in the middle of the upper surface of the platform 1, a feeding pipe 13 is installed on the upper part of the mixing barrel 12, a first motor 19 is installed at the lower part of the mixing barrel 12, the first motor 19 is connected to a mixing rod 18, a plurality of mixing plates 17 are installed on the mixing rod 18, an inclined pipe 20 is installed at the lower side of the mixing barrel 12, the inclined pipe 20 is connected to the concrete spraying machine 4, a discharge pipe 10 is installed on the upper surface of the concrete spraying machine 4, a connecting hose 8 is connected to the upper end of the discharge pipe 10, the connecting hose 8 is connected to the spray gun 7, and the spray gun 7 is provided with a fixed outer sleeve The fixed ring 6 is connected with a vertical rod 9 at the lower part of the fixed ring 6, and the lower end of the vertical rod 9 is fixedly connected to the first range adjustment component 2. The push handle 16 is pushed to drive the workbench 1 to move to the excavation surface, and then the first range adjustment component 2 is used to adjust the position of the spray gun 7 perpendicular to the two sides of the excavation surface. At this time, the air compressor 15 and the concrete spraying machine 4 are turned on, and then the mixed concrete is added through the feeding pipe 13. When adding concrete, the first motor 19 is started, and the first motor 19 is started to drive the stirring rod 18 to rotate. The rotation of the stirring rod 18 drives the stirring plate 17 to rotate to prevent the concrete added to the mixing barrel 12 from coagulating. The concrete is stirred inside the mixing barrel 12 and is input into the concrete spraying machine 4 after stirring. Then, under the spraying of the concrete spraying machine 4, it enters the discharge pipe 20, the connecting hose 8, and the spray gun 7 in turn to complete the spraying of concrete on the tunnel excavation surface. When the concrete is sprayed, the second range adjustment component 3 is started to rotate the spray gun 7 along the tunnel arc surface, so that the spray gun 7 rotates from the lowest point to the highest point, completing the concrete spraying on half of the tunnel excavation surface.

[0027] Reference Figure 1 , Figure 3 , Figure 4 , Figure 5 As shown, the first range adjustment component 2 includes a second motor 201, which is fixedly mounted on the lower surface of the mounting plate 5, and the second motor 201 is connected to a rotating rod 205, and the upper end of the rotating rod 205 is connected to a second gear 204, and the second gear 204 is meshed with a first gear 203, and the lower part of the first gear 203 is connected to a rotating block 202, and the rotating block 202 is rotatably connected to the mounting plate 5, and the second range adjustment component 3 includes a hollow rod 301, and the hollow rod 301 is fixedly mounted on the concrete spraying machine 4 The hollow rod 301 has a cylinder 302 installed inside, a bottom block 309 installed on the upper surface of the cylinder 302, a plug rod 310 installed on the bottom block 309, the plug rod 310 is rotatably connected to the vertical plate 303, the upper end of the vertical plate 303 is fixedly connected to the lower part of the mounting plate 5, the upper end of the side of the hollow rod 301 is connected to the side plate 304, the side plate 304 is provided with a slide groove 305, the slide groove 305 is slidably connected to the round rod 306, the end of the round rod 306 is connected to the limited block 307, and the other end of the round rod 306 is rotatably connected to The connecting plate 308, the upper end of the connecting plate 308 is fixedly connected to the lower end of the mounting plate 5, the second motor 201 is started, the second motor 201 is started to drive the rotating rod 205 to rotate, the rotating rod 205 rotates to drive the second gear 204 to rotate, the second gear 204 rotates to drive the first gear 203 to rotate, the first gear 203 rotates to drive the vertical rod 9 and the fixed ring 6 to rotate, the fixed ring 6 rotates to drive the spray gun 7 to rotate, the cylinder 302 is started, the cylinder 302 is started to drive the bottom block 309 and the vertical plate 303 to move upward , the vertical plate 303 moves upward so that the mounting plate 5 drives the connecting plate 308 to rotate along the round rod 306. When the vertical plate 303 moves upward, it also rotates along the bottom block 309. When the connecting plate 308 rotates, the mounting plate 5 also rotates. When the cylinder 302 moves upward, it drives the round rod 306 to slide along the slide groove 305 toward the hollow rod 301. When the mounting plate 5 is vertical, the spray gun 7 is in a vertical state. At this time, the vertical plate 303 rotates to a horizontal state, the connecting plate 308 rotates to a horizontal state, and the round rod 306 moves to the far left.

[0028] Working principle: when spraying concrete support on the tunnel excavation surface, push the push handle 16 to drive the workbench 1 to move to the excavation surface, and then use the first range adjustment component 2 to adjust the position of the spray gun 7 to be perpendicular to both sides of the excavation surface (tunnel excavation is generally arc excavation, and the spray gun 7 is perpendicular to the arc edge). The specific method is to start the second motor 201, the second motor 201 starts to drive the rotating rod 205 to rotate, the rotating rod 205 rotates to drive the second gear 204 to rotate, the second gear 204 rotates to drive the first gear 203 to rotate, the first gear 203 rotates to drive the vertical rod 9 and the fixed ring 6 to rotate, the fixed ring 6 rotates to drive the spray gun 7 to rotate, and when the spray gun 7 is perpendicular to the tunnel arc surface (at this time, the spray gun 7 can spray to the lower end of the tunnel, and the spray range of the spray gun 7 is a circular area), turn off the second motor 201;

[0029] At this time, the air compressor 15 and the concrete spraying machine 4 are turned on (the concrete spraying machine 4 refers to a machine that uses compressed air to form a suspended airflow with concrete in a certain ratio and sprays it out, and the air compressor 15 provides compressed air), and then the uniformly mixed concrete is added through the feeding pipe 13. When the concrete is added, the first motor 19 is started, and the first motor 19 is started to drive the stirring rod 18 to rotate, and the stirring rod 18 rotates to drive the stirring plate 17 to rotate, so as to prevent the concrete added to the mixing barrel 12 from coagulating. The concrete is stirred inside the mixing barrel 12, and then input into the concrete spraying machine 4 after stirring, and then enters the discharge pipe 20, the connecting hose 8, and the spray gun 7 in sequence under the spraying of the concrete spraying machine 4, and the spraying of the tunnel excavation surface is completed;

[0030] When concrete is sprayed, the second range adjustment component 3 is started to rotate the spray gun 7 along the curved surface of the tunnel, so that the spray gun 7 rotates from the lowest point to the highest point, and the concrete spraying of half of the tunnel excavation surface is completed. Specifically, the cylinder 302 is started, and the cylinder 302 is started to drive the bottom block 309 and the vertical plate 303 to move upward. The vertical plate 303 moves upward so that the mounting plate 5 drives the connecting plate 308 to rotate along the round rod 306. When the vertical plate 303 moves upward, it also rotates along the bottom block 309. When the connecting plate 308 rotates, the mounting plate 5 also rotates. When the cylinder 302 moves upward, it drives the round rod 306 to slide along the slide groove 305 toward the hollow rod 301. When the mounting plate 5 is vertical, the spray gun 7 is in a vertical state. At this time, the vertical plate 303 rotates to a horizontal state, the connecting plate 308 rotates to a horizontal state, and the round rod 306 moves to the far left.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A concrete spraying device for tunnel construction, comprising a workbench (1), characterized in that: A concrete spraying machine (4) is mounted on the upper surface of the workbench (1), a second range adjustment component (3) is mounted on the upper surface of the concrete spraying machine (4), a mounting plate (5) is rotatably connected to the upper portion of the second range adjustment component (3), and a first range adjustment component (2) is mounted on the mounting plate (5).

2. A concrete spraying device for tunnel construction according to claim 1, characterized in that: A moving wheel (11) is installed at the lower part of the workbench (1); an air compressor (15) is installed at one end of the upper surface of the workbench (1) away from the concrete spraying machine (4); a push handle (16) is installed at the end of the workbench (1); and a connecting pipe (14) is connected between the concrete spraying machine (4) and the air compressor (15).

3. A concrete spraying device for tunnel construction according to claim 2, characterized in that: A stirring barrel (12) is installed in the middle of the upper surface of the workbench (1), and a feeding pipe (13) is installed on the upper part of the stirring barrel (12).

4. A concrete spraying device for tunnel construction according to claim 3, characterized in that: A first motor (19) is installed at the lower part of the mixing barrel (12), the first motor (19) is connected to a mixing rod (18), a plurality of mixing plates (17) are installed on the mixing rod (18), an inclined pipe (20) is installed at the lower part of the side of the mixing barrel (12), and the inclined pipe (20) is connected to a concrete spraying machine (4).

5. A concrete spraying device for tunnel construction according to claim 4, characterized in that: A discharge pipe (10) is installed on the upper surface of the concrete spraying machine (4), the upper end of the discharge pipe (10) is connected to a connecting hose (8), the connecting hose (8) is connected to a spray gun (7), the outer sleeve of the spray gun (7) is provided with a fixing ring (6), the lower part of the fixing ring (6) is connected to a vertical rod (9), and the lower end of the vertical rod (9) is fixedly connected to the first range adjustment component (2).

6. A concrete spraying device for tunnel construction according to claim 5, characterized in that: The first range adjustment component (2) comprises a second motor (201), the second motor (201) is fixedly mounted on the lower surface of the mounting plate (5), the second motor (201) is connected to a rotating rod (205), the upper end of the rotating rod (205) is connected to a second gear (204), the second gear (204) is meshed with a first gear (203), the lower part of the first gear (203) is connected to a rotating block (202), and the rotating block (202) is rotatably connected to the mounting plate (5).

7. A concrete spraying device for tunnel construction according to claim 6, characterized in that: The second range adjustment assembly (3) comprises a hollow rod (301), the hollow rod (301) being fixedly mounted on the upper surface of the concrete spraying machine (4), a cylinder (302) being mounted inside the hollow rod (301), a bottom block (309) being mounted on the upper surface of the cylinder (302), a plug rod (310) being mounted on the bottom block (309), the plug rod (310) being rotatably connected to a vertical plate (303), the upper end of the vertical plate (303) being connected to the mounting plate The lower part of the mounting plate (5) is fixedly connected, the upper end of the side of the hollow rod (301) is connected to a side plate (304), the side plate (304) is provided with a slide groove (305), the slide groove (305) is slidably connected to a round rod (306), the end of the round rod (306) is connected to a limiting block (307), the other end of the round rod (306) is rotatably connected to a connecting plate (308), and the upper end of the connecting plate (308) is fixedly connected to the lower end of the mounting plate (5).

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