Formwork spraying formwork system for spraying concrete and construction method of formwork spraying formwork system

Abstract

The invention relates to the technical field of concrete spraying, in particular to a mold spraying template system for spraying concrete and a construction method of the mold spraying template system, and solves the problems that when an existing mold spraying template is used, the spraying angle of a guniting pipe is inconvenient to adjust, and when the template needs to be replaced, the guniting pipe is very inconvenient to dismount and mount. A transverse groove is formed in the upper portion of the front end face of the mold spraying template, a transverse plate is movably arranged on the inner side of the transverse groove, strip-shaped plates are installed on the two sides of the outer surface of the transverse plate, limiting grooves are formed in the opposite sides of the outer surfaces of the two strip-shaped plates, and a U-shaped seat is movably arranged in front of the transverse plate through a moving mechanism. And two rotating shafts are arranged on the inner side of the U-shaped seat. The position and the angle of the guniting head can be adjusted conveniently, use is convenient, the guniting pipe can be disassembled and assembled conveniently, and therefore a mould spraying template can be replaced conveniently.

Description

Technical Field

[0001] The present invention relates to the technical field of shotcrete, and specifically to a formwork spraying template system for shotcrete and its construction method. Background Technique

[0002] In the initial support construction of tunnels, a construction method of directly spraying concrete onto the excavation surface is adopted, and the shotcrete method is divided into two types: robotic arm spraying and manual spraying. The biggest drawback of the current direct shotcrete construction method is the high rebound rate. Currently, there is a 20%-40% rebound during the construction process, and the rebound material cannot be recycled, resulting in a great waste, which is the main reason for the high construction cost; moreover, the construction safety is poor. During manual spraying, the operator will construct below the unsupported surface, and there is a risk of being hit by falling rocks and falling concrete. The formwork spraying template for shotcrete is usually used in auxiliary cooperation with the installation of the shotcrete pipe on its back.

[0003] However, when the existing formwork spraying template is in use, it is not convenient to adjust the spraying angle of the shotcrete pipe, and when the template needs to be replaced, it is very inconvenient to disassemble and install the shotcrete pipe; therefore, it does not meet the existing requirements, and for this reason, we propose a formwork spraying template system for shotcrete and its construction method. Summary of the Invention

[0004] The purpose of the present invention is to provide a formwork spraying template system for shotcrete and its construction method to solve the problems in the above background technique that when the existing formwork spraying template is in use, it is not convenient to adjust the spraying angle of the shotcrete pipe, and when the template needs to be replaced, it is very inconvenient to disassemble and install the shotcrete pipe.

[0005] To achieve the above object, the present invention provides the following technical solution: A die-spraying formwork system for shotcrete, including a die-spraying formwork. Above the front end face of the die-spraying formwork, a transverse groove is provided. Inside the transverse groove, a transverse plate is movably arranged. On both sides of the outer surface of the transverse plate, strip-shaped plates are installed. On the opposite sides of the outer surfaces of the two strip-shaped plates, limiting grooves are provided. In front of the transverse plate, a U-shaped seat is movably arranged through a moving mechanism. Inside the U-shaped seat, two rotating shafts are provided. On the opposite sides of the outer surfaces of the two rotating shafts, a rotating seat is fixedly connected. Inside the rotating seat, a spraying head is provided. Above the spraying head, a spraying pipe is installed. On one side of the outer surface of the U-shaped seat, a first motor is installed. On the other side of the outer surface of the U-shaped seat, a limiting mechanism is provided. Behind the transverse groove, a cavity is provided. Inside the cavity, a short shaft is provided. At both ends of the short shaft, threaded rods are installed. On the outer surface of the threaded rods, threaded blocks are sleeved. On the front end face of the threaded blocks, connecting blocks are installed. On the opposite sides of the two connecting blocks, limiting plates are installed. Below the inside of the die-spraying formwork, a movable cavity is provided. Inside the movable cavity, a transmission mechanism is provided. Below the rear end face of the die-spraying formwork, a connecting shaft is provided. The connecting shaft and the short shaft are in transmission connection through the transmission mechanism. On the outer surface of the connecting shaft, a rocking handle is sleeved.

[0006] Preferably, the moving mechanism includes a first lead screw. The first lead screw is installed on the front end face of the transverse plate through a groove. On the outer surface of the first lead screw, a first threaded plate is sleeved. The front end face of the first threaded plate is fixedly connected to the rear end face of the U-shaped seat.

[0007] Preferably, on one side of the groove, a motor cavity is provided. The motor cavity is installed with a second motor. One end of the second motor is fixedly connected to one end of the first lead screw through a pin shaft. The other end of the first lead screw is rotatably connected to the inner wall of the groove through a bearing.

[0008] Preferably, the output end of the first motor is fixedly connected to one end of one of the rotating shafts through a coupling. The limiting mechanism includes a housing. Inside the housing, a transverse shaft is provided. On the outer surface of the transverse shaft, a gear is sleeved. On the bottom surface of the inner wall of the housing, an electric push rod is installed. On the upper end face of the electric push rod, a clamping block is installed through a bottom plate.

[0009] Preferably, the clamping block can be clamped into the outer surface of the gear. One end of the transverse shaft is fixedly connected to one end of the other rotating shaft. The other end of the transverse shaft is rotatably connected to the inner wall of the housing through a bearing.

[0010] Preferably, the transmission mechanism includes a vertical shaft. A second bevel gear is sleeved on the upper part of the outer surface of the vertical shaft, and a third bevel gear is sleeved on the lower part of the outer surface of the vertical shaft. The vertical shaft penetrates through the movable cavity through a through hole and extends into the interior of the cavity. The vertical shaft is rotatably connected to the through hole through a bearing.

[0011] Preferably, a fourth bevel gear is sleeved on the rear of the outer surface of the connecting shaft. The fourth bevel gear meshes with the third bevel gear. The front end face of the connecting shaft is rotatably connected to the inner wall of the movable cavity through a bearing. A first bevel gear is sleeved on the outer surface of the short shaft, and the first bevel gear meshes with the second bevel gear.

[0012] Preferably, the end of the threaded rod is rotatably connected to the inner wall of the cavity through a bearing. The thread directions of the two threaded rods are opposite, and the threaded block is screwed with the threaded rod.

[0013] Preferably, the cavity and the transverse groove are connected through a connecting groove. The limiting plate can move inside the connecting groove, and the limiting plate can be inserted into the inside of the limiting groove. A plurality of circular grooves are uniformly arranged on the rear end face of the transverse plate, and springs are installed on the inner walls of the circular grooves.

[0014] A construction method for a die spraying formwork for shotcrete includes the following steps:

[0015] S1: First, connect the slurry spraying pipe to an external water pump and a concrete tank. The position of the slurry spraying head can be adjusted by controlling the moving mechanism. When it is necessary to adjust the angle of the slurry spraying head, the switch of the electric push rod can be controlled first to make the electric push rod work, driving the clamping block to move downward. The clamping block leaves the surface of the gear, releasing the limit on the gear. Then, the switch of the first motor can be controlled. When the first motor works, it can drive the rotating shaft to rotate, thereby driving the rotating seat to rotate and adjusting the angle of the slurry spraying head.

[0016] S2: After adjusting to the appropriate angle, control the electric push rod to drive the clamping block to move upward to limit the gear, thereby limiting the horizontal shaft and preventing the rotating shaft from rotating to fix the rotating seat and prevent the slurry spraying head from rotating during shotcrete, improving the stability of concrete spraying.

[0017] S3: When the die spraying formwork has been used for a long time and is damaged, etc., and needs to be replaced, the connecting shaft can be rotated by shaking the handle. When the connecting shaft rotates, it can drive the fourth bevel gear to rotate, thereby driving the third bevel gear to rotate. When the third bevel gear rotates, it can drive the vertical shaft to rotate, thereby driving the second bevel gear to rotate.

[0018] S4: The rotation of the second bevel gear can drive the rotation of the first bevel gear, thereby driving the rotation of the short shaft. The two threaded rods rotate simultaneously, and the thread directions of the two threaded rods are opposite. The threaded block can move on the outer surface of the threaded rod, and the two threaded blocks can move towards or away from each other simultaneously, driving the two connecting blocks to move towards or away from each other at the same time;

[0019] S5: The movement of the connecting block can drive the movement of the limiting plate, and the limiting plate can leave the inside of the limiting groove, releasing the limitation on the die spraying template. Under the action of multiple springs, the cross plate is pushed outwards from the cross groove, facilitating the removal of the cross plate and the strip plate from the inside of the cross groove and replacing the die spraying template.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. By providing a moving mechanism, a first motor, and a limiting mechanism, the present invention can control the switch of the second motor. When the second motor works, it drives the rotation of the first lead screw, thereby driving the first threaded plate to move on the outer surface of the first lead screw, driving the U-shaped seat to move, and thus adjusting the position of the spraying head. And by controlling the switch of the first motor, when the angle of the spraying head needs to be adjusted, the switch of the electric push rod can be controlled first to make the electric push rod work, driving the clamping block to move downward. The clamping block leaves the surface of the gear, releasing the limitation on the gear. Then, by controlling the switch of the first motor, the first motor works to drive the rotation of the rotating shaft, thereby driving the rotating seat to rotate and adjusting the angle of the spraying head. When the angle is adjusted to an appropriate value, the electric push rod is controlled again to drive the clamping block to move upward, limiting the gear, thereby limiting the cross shaft and preventing the rotating shaft from rotating, fixing the rotating seat, and preventing the spraying head from rotating during the spraying of concrete, improving the stability of concrete spraying. The present invention is convenient for adjusting the position and angle of the spraying head and is easy to use;

[0022] 2. By providing a transmission mechanism, a limiting plate, a short shaft, threaded rods, and a limiting groove, when the die spraying template needs to be replaced, the handle can be shaken to drive the connection shaft to rotate, driving the fourth bevel gear to rotate, thereby driving the third bevel gear to rotate, driving the vertical shaft to rotate, driving the second bevel gear to rotate, thereby driving the first bevel gear to rotate, and then driving the short shaft to rotate. The two threaded rods rotate simultaneously, and the two threaded blocks can move away from each other simultaneously, driving the two connecting blocks to move away from each other. The limiting plate leaves the inside of the limiting groove, releasing the limitation on the die spraying template. Under the action of multiple springs, the cross plate is pushed outwards from the cross groove, facilitating the removal of the cross plate and the strip plate from the inside of the cross groove and replacing the die spraying template. The present invention is convenient for the disassembly and assembly of the spraying pipe, thus facilitating the replacement of the die spraying template. Description of the Drawings

[0023] Figure 1 It is a schematic structural diagram of the whole of the present invention;

[0024] Figure 2 It is the front view of the whole of the present invention;

[0025] Figure 3 It is a partial structural schematic diagram of the limit mechanism of the present invention;

[0026] Figure 4 It is the top cross-sectional view of the whole of the present invention;

[0027] Figure 5 It is a partial structural schematic diagram of the short shaft of the present invention;

[0028] Figure 6 It is the side cross-sectional view of the whole of the present invention;

[0029] Figure 7 It is a structural schematic diagram of the transmission mechanism of the present invention.

[0030] In the figure: 1, die spraying template; 2, cross plate; 3, spraying pipe; 4, limit mechanism; 401, housing; 402, electric push rod; 403, gear; 404, horizontal shaft; 405, clamping block; 5, rotating seat; 6, spraying head; 7, first motor; 8, U-shaped seat; 9, moving mechanism; 901, groove; 902, first lead screw; 903, first threaded plate; 904, second motor; 10, rotating shaft; 11, cavity; 12, limiting plate; 13, short shaft; 14, threaded rod; 15, rocking handle; 16, threaded block; 17, transmission mechanism; 1701, first bevel gear; 1702, second bevel gear; 1703, vertical shaft; 1704, third bevel gear; 1705, fourth bevel gear; 18, circular groove; 19, movable cavity; 20, connecting shaft; 21, connecting block; 22, transverse groove; 23, spring; 24, limiting groove; 25, strip plate. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0032] The electric push rod 402 (model LBP40), the first motor 7 (model YS7134), and the second motor 904 (model 68KTYZ) mentioned in the present invention can all be obtained by purchasing from the market or customizing privately.

[0033] Please refer to Figures 1 to 7, an embodiment provided by the present invention: a form-spraying template system for shotcrete, including a form-spraying template 1. Above the front end face of the form-spraying template 1, a transverse groove 22 is provided. Inside the transverse groove 22, a transverse plate 2 is movably arranged. On both sides of the outer surface of the transverse plate 2, strip-shaped plates 25 are installed. On the opposite sides of the outer surfaces of the two strip-shaped plates 25, limiting grooves 24 are provided. In front of the transverse plate 2, a U-shaped seat 8 is movably arranged through a moving mechanism 9. Inside the U-shaped seat 8, two rotating shafts 10 are provided. On the opposite sides of the outer surfaces of the two rotating shafts 10, a rotating seat 5 is fixedly connected. Inside the rotating seat 5, a spraying head 6 is provided. Above the spraying head 6, a spraying pipe 3 is installed. On one side of the outer surface of the U-shaped seat 8, a first motor 7 is installed. On the other side of the outer surface of the U-shaped seat 8, a limiting mechanism 4 is provided. Behind the transverse groove 22, a cavity 11 is provided. Inside the cavity 11, a short shaft 13 is provided. At both ends of the short shaft 13, threaded rods 14 are installed. On the outer surface of the threaded rods 14, threaded blocks 16 are sleeved. On the front end face of the threaded blocks 16, connecting blocks 21 are installed. On the opposite sides of the two connecting blocks 21, a limiting plate 12 is installed. Below the inside of the form-spraying template 1, a moving cavity 19 is provided. Inside the moving cavity 19, a transmission mechanism 17 is provided. Below the rear end face of the form-spraying template 1, a connecting shaft 20 is provided. The connecting shaft 20 and the short shaft 13 are in transmission connection through the transmission mechanism 17. On the outer surface of the connecting shaft 20, a rocking handle 15 is sleeved.

[0034] The moving mechanism 9 includes a first lead screw 902. The first lead screw 902 is installed on the front end face of the transverse plate 2 through a groove 901. On the outer surface of the first lead screw 902, a first threaded plate 903 is sleeved. The front end face of the first threaded plate 903 is fixedly connected to the rear end face of the U-shaped seat 8. On one side of the groove 901, a motor cavity is provided. A second motor 904 is installed in the motor cavity. One end of the second motor 904 is fixedly connected to one end of the first lead screw 902 through a pin shaft. The other end of the first lead screw 902 is rotatably connected to the inner wall of the groove 901 through a bearing. When the second motor 904 works, it can drive the first lead screw 902 to rotate, and the first threaded plate 903 can move left and right on the outer surface of the first lead screw 902.

[0035] The output end of the first motor 7 is fixedly connected to one end of one of the rotating shafts 10 through a coupling. The limiting mechanism 4 includes a housing 401. Inside the housing 401, a transverse shaft 404 is provided. On the outer surface of the transverse shaft 404, a gear 403 is sleeved. On the bottom surface of the inner wall of the housing 401, an electric push rod 402 is installed. The upper end face of the electric push rod 402 is provided with a clamping block 405 through a bottom plate. When the first motor 7 works, it can drive the rotating shaft 10 to rotate, and can drive the rotating seat 5 to rotate. When the electric push rod 402 works, it can drive the clamping block 405 to move.

[0036] The clamping block 405 can be clamped into the outer surface of the gear 403. One end of the horizontal shaft 404 is fixedly connected to one end of another rotating shaft 10, and the other end of the horizontal shaft 404 is rotatably connected to the inner wall of the housing 401 through a bearing. The clamping block 405 can limit the position of the gear 403, improving the stability of the rotation of the horizontal shaft 404.

[0037] The transmission mechanism 17 includes a vertical shaft 1703. Above the outer surface of the vertical shaft 1703, a second bevel gear 1702 is sleeved, and below the outer surface of the vertical shaft 1703, a third bevel gear 1704 is sleeved. The vertical shaft 1703 passes through the movable cavity 19 through a through hole and extends into the interior of the cavity 11. The vertical shaft 1703 is rotatably connected to the through hole through a bearing, improving the stability of the rotation of the vertical shaft 1703.

[0038] Behind the outer surface of the connecting shaft 20, a fourth bevel gear 1705 is sleeved. The fourth bevel gear 1705 meshes with the third bevel gear 1704. The front end face of the connecting shaft 20 is rotatably connected to the inner wall of the movable cavity 19 through a bearing. On the outer surface of the short shaft 13, a first bevel gear 1701 is sleeved. The first bevel gear 1701 meshes with the second bevel gear 1702. The rotation of the fourth bevel gear 1705 can drive the rotation of the third bevel gear 1704, and the rotation of the second bevel gear 1702 can drive the rotation of the first bevel gear 1701.

[0039] The end of the threaded rod 14 is rotatably connected to the inner wall of the cavity 11 through a bearing. The thread directions of the two threaded rods 14 are opposite. The threaded block 16 is screwed with the threaded rod 14, improving the stability of the rotation of the threaded rod 14. The two threaded blocks 16 can move in the direction of approaching or separating at the same time.

[0040] The cavity 11 is connected to the transverse groove 22 through a connecting groove. The limiting plate 12 can move inside the connecting groove. The limiting plate 12 can be clamped into the inside of the limiting groove 24. On the rear end face of the transverse plate 2, a plurality of circular grooves 18 are uniformly arranged. Inside the inner wall of the circular groove 18, a spring 23 is installed. The limiting plate 12 can limit the position of the strip plate 25. When the limiting plate 12 leaves the inside of the limiting groove 24, the limit on the strip plate 25 is released. Under the action of the plurality of springs 23, the transverse plate 2 can be pushed out towards the outside of the transverse groove 22.

[0041] A construction method for a form-spraying template for shotcrete includes the following steps:

[0042] S1: First, connect the external water pump of the spraying pipe 3 to the concrete tank. By controlling the moving mechanism 9, the position of the spraying head 6 can be adjusted. Thus, the position of the spraying head 6 can be adjusted. And with the first motor 7 and the limiting mechanism 4 provided, when the angle of the spraying head 6 needs to be adjusted, the switch of the electric push rod 402 can be controlled first to make the electric push rod 402 work, driving the clamping block 405 to move downward. The clamping block 405 leaves the surface of the gear 403, releasing the limit on the gear 403. Then, the switch of the first motor 7 can be controlled. When the first motor 7 works, it can drive the rotating shaft 10 to rotate, thereby driving the rotating seat 5 to rotate and adjusting the angle of the spraying head 6;

[0043] S2: After adjusting to the appropriate angle, control the electric push rod 402 again to drive the clamping block 405 to move upward, limit the gear 403, and thus limit the horizontal shaft 404 to prevent the rotating shaft 10 from rotating and fix the rotating seat 5, preventing the spraying head 6 from rotating during concrete spraying and improving the stability of concrete spraying;

[0044] S3: When the die spraying template 1 has been used for a long time and is damaged, etc., and needs to be replaced, the handle 15 can be shaken to rotate the connecting shaft 20. When the connecting shaft 20 rotates, it can drive the fourth bevel gear 1705 to rotate, thereby driving the third bevel gear 1704 to rotate. When the third bevel gear 1704 rotates, it can drive the vertical shaft 1703 to rotate, thereby driving the second bevel gear 1702 to rotate;

[0045] S4: When the second bevel gear 1702 rotates, it can drive the first bevel gear 1701 to rotate, thereby driving the short shaft 13 to rotate. The two threaded rods 14 rotate simultaneously, and the thread directions of the two threaded rods 14 are opposite. The threaded block 16 can move on the outer surface of the threaded rod 14. The two threaded blocks 16 can move in the direction of approaching or separating simultaneously, and at the same time drive the two connecting blocks 21 to move in the direction of approaching or separating;

[0046] S5: When the connecting block 21 moves, it can drive the limiting plate 12 to move. The limiting plate 12 can leave the inside of the limiting groove 24, releasing the limit on the die spraying template 1. Under the action of multiple springs 23, the cross plate 2 is pushed out of the outer side of the cross groove 22, facilitating the removal of the cross plate 2 and the strip plate 25 from the inside of the cross groove 22 and replacing the die spraying template 1.

[0047] It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A shotcrete formwork spraying system, comprising a shotcrete formwork (1), characterized in that: Above the front end face of the die spraying template (1), a transverse groove (22) is provided. Inside the transverse groove (22), a transverse plate (2) is movably arranged. On both sides of the outer surface of the transverse plate (2), strip plates (25) are installed. On the opposite sides of the outer surfaces of the two strip plates (25), limiting grooves (24) are provided. In front of the transverse plate (2), a U-shaped seat (8) is movably arranged through a moving mechanism (9). Inside the U-shaped seat (8), two rotating shafts (10) are provided. On the opposite sides of the outer surfaces of the two rotating shafts (10), a rotating seat (5) is fixedly connected. Inside the rotating seat (5), a spraying head (6) is provided. Above the spraying head (6), a spraying pipe (3) is installed. On one side of the outer surface of the U-shaped seat (8), a first motor (7) is installed. On the other side of the outer surface of the U-shaped seat (8), a limiting mechanism (4) is provided. Behind the transverse groove (22), a cavity (11) is provided. Inside the cavity (11), a short shaft (13) is provided. At both ends of the short shaft (13), threaded rods (14) are installed. On the outer surface of the threaded rod (14), a threaded block (16) is sleeved. On the front end face of the threaded block (16), a connecting block (21) is installed. On the opposite sides of the two connecting blocks (21), a limiting plate (12) is installed. Below the interior of the die spraying template (1), a movable cavity (19) is provided. Inside the movable cavity (19), a transmission mechanism (17) is provided. Below the rear end face of the die spraying template (1), a connecting shaft (20) is provided. The connecting shaft (20) and the short shaft (13) are in transmission connection through the transmission mechanism (17). On the outer surface of the connecting shaft (20), a rocking handle (15) is sleeved.

2. The shotcrete formwork system for shotcrete according to claim 1, wherein: The moving mechanism (9) includes a first lead screw (902). The first lead screw (902) is installed on the front end face of the transverse plate (2) through a groove (901). On the outer surface of the first lead screw (902), a first threaded plate (903) is sleeved. The front end face of the first threaded plate (903) is fixedly connected to the rear end face of the U-shaped seat (8).

3. A shotcrete formwork system for shotcrete according to claim 2, characterized in that: On one side of the groove (901), a motor cavity is provided. The motor cavity is provided with a second motor (904). One end of the second motor (904) is fixedly connected to one end of the first lead screw (902) through a pin shaft. The other end of the first lead screw (902) is rotatably connected to the inner wall of the groove (901) through a bearing.

4. A shotcrete formwork system for shotcrete according to claim 1, characterized in that: The output end of the first motor (7) is fixedly connected to one end of one of the rotating shafts (10) through a coupling. The limiting mechanism (4) includes a housing (401). Inside the housing (401), a transverse shaft (404) is provided. On the outer surface of the transverse shaft (404), a gear (403) is sleeved. On the bottom surface of the inner wall of the housing (401), an electric push rod (402) is installed. On the upper end face of the electric push rod (402), a clamping block (405) is installed through a bottom plate.

5. The shotcrete formwork system for shotcrete according to claim 4, characterized in that: The clamping block (405) can be clamped into the outer surface of the gear (403). One end of the horizontal shaft (404) is fixedly connected to one end of another rotating shaft (10), and the other end of the horizontal shaft (404) is rotatably connected to the inner wall of the housing (401) through a bearing.

6. The shotcrete formwork system for shotcrete according to claim 1, wherein: The transmission mechanism (17) includes a vertical shaft (1703). A second bevel gear (1702) is sleeved above the outer surface of the vertical shaft (1703), and a third bevel gear (1704) is sleeved below the outer surface of the vertical shaft (1703). The vertical shaft (1703) passes through the moving cavity (19) through a through hole and extends into the interior of the cavity (11). The vertical shaft (1703) is rotatably connected to the through hole through a bearing.

7. A shotcrete formwork system for shotcrete according to claim 6, characterized in that: A fourth bevel gear (1705) is sleeved behind the outer surface of the connecting shaft (20). The fourth bevel gear (1705) meshes with the third bevel gear (1704). The front end face of the connecting shaft (20) is rotatably connected to the inner wall of the moving cavity (19) through a bearing. A first bevel gear (1701) is sleeved on the outer surface of the short shaft (13), and the first bevel gear (1701) meshes with the second bevel gear (1702).

8. A shotcrete formwork system for shotcrete according to claim 1, characterized in that: The end of the threaded rod (14) is rotatably connected to the inner wall of the cavity (11). The thread directions of the two threaded rods (14) are opposite, and the threaded block (16) is screwed onto the threaded rod (14).

9. A shotcrete formwork system for shotcrete according to claim 1, characterized in that: The cavity (11) and the transverse groove (22) are connected through a connecting groove. The limiting plate (12) can move inside the connecting groove. The limiting plate (12) can be clamped inside the limiting groove (24). A plurality of circular grooves (18) are uniformly arranged on the rear end face of the transverse plate (2), and a spring (23) is installed on the inner wall of the circular groove (18).

10. A construction method of a form-spraying template for shotcrete according to any one of claims 1-9, characterized in that, Including the following steps: S1: First, connect the spraying pipe (3) to an external water pump and the concrete tank. The position of the spraying head (6) can be adjusted by controlling the moving mechanism (9). When it is necessary to adjust the angle of the spraying head (6), the switch of the electric push rod (402) can be controlled first to make the electric push rod (402) work, driving the clamping block (405) to move downward. The clamping block (405) leaves the surface of the gear (403), releasing the limit on the gear (403). Then, the switch of the first motor (7) can be controlled. When the first motor (7) works, it can drive the rotating shaft (10) to rotate, thereby driving the rotating seat (5) to rotate and adjusting the angle of the spraying head (6). S2: After adjusting to the appropriate angle, control the electric push rod (402) to drive the clamping block (405) to move upward to limit the gear (403), thereby limiting the horizontal shaft (404) to prevent the rotating shaft (10) from rotating and fixing the rotating seat (5) to prevent the spraying head (6) from rotating during the shotcrete spraying, improving the stability of the concrete spraying. S3: When the formwork spraying template (1) has been used for a long time and is damaged, etc., it needs to be replaced. The connecting shaft (20) can be rotated by shaking the handle (15). When the connecting shaft (20) rotates, it can drive the fourth bevel gear (1705) to rotate, thereby driving the third bevel gear (1704) to rotate. When the third bevel gear (1704) rotates, it can drive the vertical shaft (1703) to rotate, thereby driving the second bevel gear (1702) to rotate. S4: When the second bevel gear (1702) rotates, it can drive the first bevel gear (1701) to rotate, thereby driving the short shaft (13) to rotate. The two threaded rods (14) rotate simultaneously, and the thread directions of the two threaded rods (14) are opposite. The threaded block (16) can move on the outer surface of the threaded rod (14), and the two threaded blocks (16) can move in the direction of approaching or separating simultaneously, driving the two connecting blocks (21) to move in the direction of approaching or separating simultaneously. S5: When the connecting block (21) moves, it can drive the limiting plate (12) to move. The limiting plate (12) can leave the inside of the limiting groove (24) to release the limit on the formwork spraying template (1). Under the action of multiple springs (23), the cross plate (2) is pushed outwards from the cross groove (22), facilitating the removal of the cross plate (2) and the strip plate (25) from the inside of the cross groove (22) to replace the formwork spraying template (1).

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