Simple trolley for spraying concrete

Abstract

According to the simple concrete spraying trolley, an arc-shaped frame trolley system, a surrounding rock profiling trolley system, a mold spraying trolley system and a spraying gun system are installed on a portal trolley. And a module assembling mode is adopted, profiling mold spraying can be achieved, and automatic and continuous concrete spraying can also be achieved. Waste of springback materials can be greatly reduced, the cost is reduced, the flatness of a sprayed concrete surface can be improved, the construction efficiency is improved, the structure is simple, the cost is low, and the device is suitable for large, medium and small tunnel and subway engineering construction.

Description

Technical Field

[0001] The invention patent relates to concrete spraying equipment for underground projects such as tunnels and subways, and a simple concrete spraying trolley. Background Art

[0002] At present, in the domestic large-scale tunnel construction, most of the shotcrete operations use vehicle-mounted concrete spraying manipulators to replace manual shotcrete spraying, which has indeed improved efficiency. However, it also has four problems:

[0003] ① There is still rebound material, and even large rebound in some parts. Once these rebound materials fall to the ground, they can no longer be used and become waste, wasting a lot of concrete materials and increasing construction costs.

[0004] ② The sprayed surface still cannot be sprayed flat, with uneven surfaces. This situation makes subsequent construction difficult. For example, it is impossible to lay the waterproof board flat. If there is a large pit behind the laid waterproof board, the waterproof board will be broken when pouring concrete in the secondary lining of the tunnel, affecting the waterproof effect and reducing the construction quality of the tunnel.

[0005] ③ The cost of a vehicle-mounted concrete spraying robot is too high, which increases the construction cost of the construction unit. Small and medium-sized projects generally cannot afford it and have to use manual spraying of concrete.

[0006] ④High requirements for operators. In the process of tunnel concrete spraying, it is necessary to operate in six directions: front and back, left and right, high and low, and three-dimensional. Two hands of a person cannot operate three operating handles continuously. In addition, the size of the air volume and the amount of the accelerator must be adjusted. The operator is in a mess. This is also the main reason why the sprayed surface cannot be sprayed flat, and it is even more impossible to achieve automated spraying operations. Summary of the invention

[0007] In order to solve the problems existing in the current shotcrete equipment, the present invention patent designs a simple shotcrete trolley, which consists of a gantry trolley, an arc frame trolley system, a surrounding rock profiling trolley system, a mold spraying trolley system and a spray gun system. The gantry trolley consists of two driving wheel groups, two driven wheel groups, two bottom longitudinal beams, two upper longitudinal beams, four columns and two upper cross beams. A driving wheel group and a driven wheel group are installed under each bottom longitudinal beam, and two columns are installed on the top of each bottom longitudinal beam. The upper ends of the two columns are connected by an upper longitudinal beam. The two cross beams are connected by a The beam connects the two groups of columns to form a gantry trolley. The two motors are respectively installed on the two bottom longitudinal beams. The sprocket B on the motor shaft drives the sprocket A on the driving wheel shaft to rotate through the chain A, thereby driving the entire gantry trolley to move. The arc frame trolley system is installed on the gantry trolley through a number of supporting rods. The two telescopic rods and the front end of a cylinder A of the arc frame trolley system are connected to the surrounding rock profiling trolley system. The mold spraying trolley system is installed at the front of the two mold spraying longitudinal beams of the surrounding rock profiling trolley system. The spray gun system is installed on the cross bar of the mold spraying trolley system through a mounting plate.

[0008] The arc frame trolley system is composed of two arc components, an arc trolley and a plurality of supporting rods. The shape of the two arc components is similar to the tunnel contour. The two arc components are arranged opposite to each other and are installed around the gantry trolley through a plurality of supporting rods. Each supporting rod is installed on the outside of the two arc components. The arc trolley is installed between the two arc components. A rack is installed on the outer surface of the outer arc plate of each arc component. The arc trolley is composed of two gears A, two driven wheels, a driving wheel shaft, a driven wheel shaft, two wheel shaft support plates, four protection wheels, two protection wheel shafts, two telescopic rods, a cylinder A, a bottom connecting cross bar and two hydraulic motors A. The driving wheel The axle, the driven wheel axle and the two protection wheel axles are respectively installed in the corresponding mounting holes on the two wheel axle support plates to form a whole. The two wheel axle support plates are located on the inner sides of the two arc-shaped structures. A bottom connecting cross bar is installed in the middle of the lower ends of the two wheel axle support plates. A gear A is installed at both ends of the driving wheel axle. A bearing seat is installed at the connection between the driving wheel axle and the two wheel axle support plates. The two gears A rotate with the driving wheel axle. The two gears A are meshed with the two racks respectively. Two hydraulic motors A are respectively installed on the two wheel axle support plates. Both hydraulic motors A are equipped with braking mechanisms. A driving gear B is installed on the output shaft of each hydraulic motor A. The two main The driven gear B is meshed with the two gears A respectively. A driven wheel is installed at each end of the driven wheel shaft. Both driven wheels are double-flange wheels. The double flanks of the driven wheels run along the outer surface of the outer arc plate of the arc-shaped component. Bearings are installed inside the two driven wheels. Two guard wheels are installed at each end of the two guard wheel shafts. Bearings are installed in the four guard wheels. The four guard wheels are installed on the inner side of the outer arc plates of the two arc-shaped components and are respectively located near the gear A and the driven wheels. The lower ends of the two telescopic rods and a cylinder A are hinged to the bottom connecting cross bar. The front ends of the two telescopic rods are respectively connected to the two cross beams of the profiling trolley system with bolts. The front end of the piston rod of the cylinder A is connected to a The crossbeam is hinged, and the connecting rod connects the outer tubes of the two telescopic rods into one. A slotted hole is processed in the middle of the upper part of the two wheel axle support plates. A travel switch A is installed at the left end of each slotted hole, and a travel switch B is installed at the right end of the slotted hole. A swing shaft is installed on the outside of each telescopic rod and at the position corresponding to the slotted hole. The length of the swing shaft exceeds the wheel axle support plate. The pneumatic control element of cylinder A consists of a three-position four-way reversing valve, a safety valve, a pressure reducing valve and a filter. The safety valve is installed near the air inlet of the large cavity of cylinder A, and the pressure reducing valve and the filter are installed on the air inlet pipeline of cylinder A. The three-position four-way reversing valve is connected to the two air inlets of cylinder A at the same time.

[0009] The profiling trolley system of the simple shotcrete trolley is composed of two profiling longitudinal beams, a plurality of profiling cross beams, a profiling wheel axle, a plurality of profiling wheels, a hydraulic motor B, a sprocket C, a sprocket D and a chain B. A plurality of profiling wheels and a sprocket D are installed on the profiling wheel axle. The profiling wheels rotate together with the profiling wheel axle and the sprocket D. The profiling wheel axle is installed on a plurality of profiling cross beams at the right end of the profiling trolley system through a plurality of bearing seats and is located at the midline position between the two profiling longitudinal beams. The profiling wheels and the profiling wheel axle are located on the outside of the profiling trolley system. The hydraulic motor B is installed on a profiling cross beam at the right end of the profiling longitudinal beam. A sprocket C is installed on the output shaft of the hydraulic motor B. The sprocket C forms a transmission relationship with the sprocket D through the chain B.

[0010] The spraying trolley system of the tunnel construction gantry-type automated profiling spraying trolley is located at the left end of the profiling longitudinal beam, and is composed of a cylinder B, two spraying trolley cross bars, four spraying trolley wheels, four spraying trolley wheel axles, a spraying conical cylinder fixing flange, a spraying conical cylinder, two spraying rails, two spraying trolley wheel outer fixing plates, two spraying trolley wheel inner fixing plates, a spraying trolley left end limit travel switch C, a spraying trolley right end limit travel switch D, a rangefinder A on the left side of the conical cylinder and a rangefinder B on the right side of the conical cylinder. The two spraying rails are respectively installed on the inner sides of the two profiling longitudinal beams, and two spraying trolley wheels and two axles are installed in the middle between an inner fixing plate and an outer fixing plate of a spraying trolley wheel to form a walking mechanism on one side, and the two ends of the two walking mechanisms are connected to the two ends of the spraying trolley. The cross bars are connected as a whole to form a rectangular trolley. The wheels of the mold-sprayed trolley are double-rimmed and ride on tracks. The mold-sprayed conical cylinder fixing flange is connected as a whole with the conical cylinder. The mold-sprayed conical cylinder is installed on two outer fixing plates by bolts. The mold-sprayed conical cylinder is composed of a conical cylinder body and a mold-sprayed forming flange. The taper of the mold-sprayed conical cylinder body is greater than the brushing trajectory of the concrete after it comes out of the spray gun. The mold-sprayed forming flange is located at the end of the conical cylinder body. It is in a straight line with the profiling wheel and is on the sprayed concrete forming surface. Distance meters A and distance meters B are installed on both sides of the mold-sprayed conical cylinder respectively, and a travel switch C is installed on the profiling beam on the left side of the mold-sprayed trolley system. A travel switch D is installed at an appropriate position on the right side of the mold-sprayed trolley system. The front end of the piston rod of the cylinder B is hinged to the right cross bar of the mold-sprayed trolley system, and the rear end of the cylinder B is hinged to the right profiling beam.

[0011] The spray gun system of the tunnel construction gantry-type automated contour spraying trolley is composed of a spray gun, a high-pressure gas and accelerator adding pipe, a spray gun fixing plate, a concrete delivery hose, a spray gun brush frame, a universal joint, a spray gun swing frame, a swing motor, an eccentric wheel disc and a mounting plate. The front end of the spray gun is inserted into the spray cone cylinder, the spray gun is mounted on the brush frame through the fixing plate, the rear end of the brush frame is connected to the swing frame through the universal joint, the front end of the brush frame is connected to the eccentric wheel disc, the swing motor is installed at the front of the swing frame, the eccentric wheel disc is installed on the output shaft of the swing motor, one end of the mounting plate is connected to the spray gun swing frame, and the other end is connected to the cross bar on one side of the spray trolley system as a whole.

[0012] The cylinder A and the cylinder B of the simple shotcrete trolley can also be replaced with hydraulic cylinders.

[0013] The beneficial effects of the present invention are:

[0014] 1. The outline of the mold spray cone is larger than the outline of the concrete during spraying, so it can collect most of the rebound material. It can also spray the rebounded concrete material onto the tunnel surrounding rock again under the action of subsequent high-pressure gas for reuse, which greatly reduces the waste of rebound material and reduces construction costs.

[0015] 2. Two distance meters are set on both sides of the mold spraying cone to ensure that there is no under-spraying or depression; even if there is too much spraying, it will be scraped off by the mold spraying flange, and the scraped concrete material will fall into the cone and will soon be carried by the subsequent concrete and sprayed onto the sprayed surface, making the sprayed surface smooth and achieving the mold spraying effect.

[0016] 3. Since the wheels of the contoured trolley system are running on the sprayed surface, this type of mold spraying is also contoured mold spraying, and the contour of each cycle of mold spraying is the same, just like contour key matching.

[0017] 4. This invention adopts modular design, each subsystem performs different actions, and it is easy to realize automatic shotcrete operation, just like printing by a printer. BRIEF DESCRIPTION OF THE DRAWINGS The specific embodiments of the present invention are described below in conjunction with the accompanying drawings:

[0019] Figure 1 Schematic diagram of the longitudinal section structure of a simple shotcrete trolley

[0020] Figure 2 Right view of the structure of a simple shotcrete trolley

[0021] Figure 3 AA section structure diagram of shotcrete simple trolley

[0022] Figure 4 BB section structure diagram of shotcrete simple trolley

[0023] Figure 5 Schematic diagram of the CC section structure of a simple shotcrete trolley

[0024] Figure 6 Schematic diagram of the right side structure of the curved trolley of the shotcrete simple trolley when it starts to move

[0025] Figure 7 Schematic diagram of the right side structure of the curved trolley of the shotcrete simple trolley when it stops moving

[0026] Figure 8 Pneumatic principle diagram of cylinder A of shotcrete simple trolley at work

[0027] Fig. 9 Pneumatic principle diagram of the piston rod of cylinder A of the shotcrete simple trolley when it retracts

[0028] Fig.10 Pneumatic principle diagram of the shotcrete simple trolley when cylinder A is not working

[0029] Among them, 1-driving wheel group, 2-sprocket A, 3-bottom longitudinal beam, 4-chain A, 5-column, 6-sprocket B, 7-trolley travel motor, 8-driven wheel group, 9-upper longitudinal beam, 10-upper cross beam, 11-gantry trolley, 12-arc frame support rod, 13-arc trolley, 14-axle support plate, 15-telescopic rod, 16-arc frame, 17-protection wheel, 18-protection wheel axle, 19-arc rack, 20-driving wheel axle, 21-gear A, 22-cylinder A, 23 -Hydraulic motor B, 24-rock profiling trolley system, 25-profiling crossbeam, 26-sprocket C, 27-profiling wheel axle, 28-profiling wheel, 29-sprocket D, 30-chain B, 31-profiling longitudinal beam, 32-bearing seat, 33-cylinder B, 34-molded spray trolley system, 35-molded spray trolley crossbar, 36-molded spray trolley wheel, 37-molded spray trolley wheel axle, 38-molded spray cone cylinder fixing flange, 39-molded spray cone cylinder, 40-molded spray track, 41-molded spray trolley wheel outer fixing plate, 42-Inner fixing plate of the spray trolley wheel, 43-Spray gun, 44-Compressed air and quick-setting agent adding pipe, 45-Spray gun fixing plate, 46-Concrete delivery hose, 47-Spray gun brush frame, 48-Universal joint, 49-Spray gun system, 50-Spray gun swing frame, 51-Swing motor, 52-Eccentric wheel, 53-Spray gun system mounting plate, 54-Telescopic rod connecting rod, 55-Electrical control system, 56-Hydraulic control system, 57-Travel switch B, 58-Swing shaft, 59-Hydraulic horse A, 60-driving gear B, 61-driven wheel, 62-travel switch A, 63-driven wheel shaft, 64-arc frame trolley system, 65-left distance meter A, 66-right distance meter B, 67-left travel switch C, 68-right travel switch D, 69-supporting connecting cross bar, 70-slot hole, 71-air compressor, 72-air filter, 73-pressure reducing valve, 74-three-position four-way reversing valve, 75-safety valve, 76-travel mechanism, 77-conical cylinder, 78-mold spraying flange DETAILED DESCRIPTION

[0030] 1. Make preparations for sprayed concrete.

[0031] 1. Move the mold spraying concrete trolley so that the horizontal range of motion of the mold spraying cone cylinder (39) is just within the range where concrete needs to be sprayed.

[0032] 2. Connect the shotcrete delivery hose to various power cords and pipelines.

[0033] 3. Let the spraying trolley system (34) descend to the lowest point of the tunnel and start spraying concrete from the bottom of the tunnel.

[0034] 4. Set the reversing valve (74) of cylinder A (22) to Figure 8The state shown in the figure is maintained to supply high pressure gas to the large chamber of the cylinder A (22) during the concrete spraying process. The pressure reducing valve (73) is adjusted so that the pressure after pressure reduction is less than or equal to the set pressure of the safety valve, and the contour trolley system (22) is pressed onto the sprayed concrete surface with appropriate pressure.

[0035] 2. Start shotcrete operation

[0036] Start the concrete delivery pump to start delivering concrete to the spray gun, and at the same time, start the control system of the spray trolley.

[0037] 1. The spray gun (43) starts spraying concrete, and at the same time, the spray gun moves in a cone profile with the universal joint as the cone apex.

[0038] 2. Start longitudinal concrete spraying operation.

[0039] The piston rod of cylinder B (33) slowly contracts, and the traction spraying trolley system (34) moves to the right with the spray gun system (49), spraying concrete while moving (see Figure 1 and Figure 4 ). When the mold spraying trolley system (34) hits the right travel switch D (68), the electromagnetic commutation of the cylinder B (33) starts to reverse, and the piston rod of the cylinder B (33) starts to extend, pushing the mold spraying trolley system (34) to move to the left. When the mold spraying trolley system (34) hits the left travel switch C (67), the electromagnetic commutation of the cylinder B (33) reverses again, and the piston rod of the cylinder B (33) starts to shrink, pulling the mold spraying trolley system (34) to move to the right. ______ This is repeated to carry out the longitudinal concrete spraying operation.

[0040] In the process of spraying concrete while moving, due to the high spraying wind pressure and the fast speed of the sprayed concrete, there will always be some rebound materials. Part of these rebound materials are blocked by the mold spraying flange and fall to the sprayed surface and are reused. Another part of the rebound materials enters the conical cylinder (39). These rebound materials are sprayed again to the sprayed surface under the entrainment of subsequent concrete and are reused without falling to the ground and becoming waste. Only a small part of the rebound materials falls to the ground.

[0041] Since the die-sprayed flange (78) of the die-sprayed conical cylinder (39) moves along the contour of the shotcrete, even if there is too much sprayed concrete, it will be scraped off by the die-sprayed flange (78) and fall into the conical cylinder. Then, it will be sprayed onto the tunnel spraying surface again under the entrainment of subsequent concrete, so that it can be utilized and will not be wasted.

[0042] 3. Start moving in a circular motion.

[0043] When the piston rod of the cylinder B (33) begins to extend and pushes the spraying trolley system (34) to move to the left, the distance meter B (66) on the right side senses something, indicating that the thickness of the sprayed concrete meets the requirements. When the spraying trolley system (34) touches the travel switch C (67) on the left, the hydraulic motor B (23) starts to rotate, and drives the contour wheel shaft (27) and the contour wheel (28) to rotate through the sprocket C (26), the chain B (30) and the sprocket D (29), so that the contour trolley system (24) drives the spraying trolley system (34) and the spray gun system (49) to move upward for an appropriate distance and then stop.

[0044] Then, the electromagnetic reversing of cylinder B (33) starts to reverse, and the piston rod of cylinder B (33) starts to shrink, pulling the mold spraying carriage system (34) to move to the right, and ______ repeats action 2.

[0045] When the piston rod of the cylinder B (33) pulls the spraying trolley system (34) to move to the right, the distance meter A (65) on the left side is sensed, indicating that the thickness of the sprayed concrete meets the requirements. When the spraying trolley system (34) touches the travel switch C (68) on the right, the hydraulic motor B (23) starts to rotate again, and drives the profiling wheel shaft (27) and the profiling wheel (28) to rotate through the sprocket C (26), the chain B (30) and the sprocket D (29), so that the profiling trolley system (24) drives the spraying trolley system (34) and the spray gun system (49) to move upward for a suitable distance and then stop.

[0046] Then, the electromagnetic reversing valve of cylinder B (33) starts to reverse, and the piston rod of cylinder B (33) starts to extend, pushing the mold spraying carriage system (34) to move left ______

[0047] Repeat steps 2 and 3.

[0048] During the circular movement, action 1 and action 2 are performed at the same time.

[0049] 4. Movement of the arc trolley (13)

[0050] Each time the contour trolley system (24) moves upward, the cylinder A (22) and the two telescopic rods (15) will have a small extension and a small swing. When the contour trolley system (24) moves upward for many times, the cylinder A (22) and the two telescopic rods (15) will have a large extension and a large swing angle, and the telescopic rods will hit the travel switch B (57) (see Figure 6 ), at this time, the two hydraulic motors A (59) start to rotate, and through the meshing of the driving gear B (60) and the gear A (21), the arc-shaped trolley (13) moves upward along the rack (19).

[0051] During the upward movement, the air pressure in the large chamber of the cylinder A (22) increases. When the air pressure is greater than the air pressure value set by the safety valve, the safety valve will release pressure and release air, so that the air pressure in the large chamber of the cylinder A (22) always remains at a stable value.

[0052] Since the large chamber of the cylinder A (22) is always in a state of air supply, the air pressure in the large chamber can be kept stable.

[0053] When the two hydraulic motors A (59) continue to rotate, the driving gear B (60) and the gear A (21) are meshed, driving the arc-shaped trolley (13) to continue to move upward along the rack (19), causing the telescopic rod to collide with the travel switch A (62). (See Figure 7 ), at this time, the hydraulic motor A (59) stops rotating and is in a braking state.

[0054] During the movement of the arc-shaped trolley (13), actions 1, 2 and 3 are running simultaneously.

[0055] According to the automatic control of the above-mentioned action, the process is repeated continuously until the concrete spraying on one side of the tunnel is completed. Then the contoured trolley system (24), the mold spraying trolley system (34), and the spray gun system (49) are transferred to the lower part of the other side of the tunnel, and the concrete spraying is continued according to the above-mentioned method until all the concrete is sprayed.

[0056] 5. Finishing steps

[0057] (1) Adjust the three-position four-way reversing valve of cylinder A (22) to Fig. 9 In the state shown, the cylinder A (22) and the two telescopic rods are fully retracted.

[0058] (2) Adjust the three-position four-way reversing valve of cylinder A (22) to Fig.10 The status shown,

[0059] (3) Start the hydraulic motor A (59) to move the arc frame trolley (13) to a suitable position.

Claims

1. A simple concrete spraying trolley, which is composed of a gantry trolley (11), an arc frame trolley system (64), a surrounding rock profiling trolley system (24), a mold spraying trolley system (34) and a spray gun system (49). The gantry trolley (11) is composed of two driving wheel groups (1), two driven wheel groups (8), two bottom longitudinal beams (3), two upper longitudinal beams (9), four columns (5) and two upper cross beams (10). A driving wheel group (1) and a driven wheel group (8) are installed below each bottom longitudinal beam (3), two columns (5) are installed above each bottom longitudinal beam (3), and the upper ends of the two columns (5) are connected by an upper longitudinal beam (9). Two cross beams (10) connect the two groups of columns (5) to form a gantry trolley (11). , two motors (7) are respectively mounted on two bottom longitudinal beams (3), a sprocket B (6) on the rotating shaft of the motor (7) drives a sprocket A (2) on the driving wheel shaft (1) to rotate through a chain A (4), thereby driving the entire gantry trolley (11) to move, an arc frame trolley system (64) is mounted on the gantry trolley (11) through a plurality of support rods (12), two telescopic rods (15) and a cylinder A (22) of the arc frame trolley system (64) are connected to the surrounding rock profiling trolley system (24) at the front end, a mold spraying trolley system (34) is mounted on the front part of two mold spraying longitudinal beams (31) of the surrounding rock profiling trolley system (24), and a spray gun system (49) is mounted on a cross bar (35) of the mold spraying trolley system (34) through a mounting plate (53), wherein: An arc frame trolley system (64), a surrounding rock profiling trolley system (24), a mold spraying trolley system (34) and a spray gun system (49) are installed on the gantry trolley (11).

2. The simple shotcrete trolley according to claim 1 is characterized in that: The arc frame trolley system (64) is composed of two arc components (16), an arc trolley (13) and a plurality of support rods (12). The shape of the two arc components (16) is similar to the tunnel profile. The two arc components (16) are arranged facing each other and are mounted on the portal trolley (11) through a plurality of support rods (12). Each support rod (12) is mounted on the outside of the two arc components (16). The arc trolley (13) is mounted between the two arc components (16). A rack (19) is mounted on the outer surface of the outer arc plate of each arc component (16). The arc trolley (13) is composed of two gears A (21), two driven wheels (61), a driving wheel shaft (20), a driven wheel shaft (63), two wheel shaft support The invention relates to a wheel support plate (14), four protective wheels (17), two protective wheel shafts (18), two telescopic rods (15), a cylinder A (22), a bottom connecting cross bar (69) and two hydraulic motors A (59). The driving wheel shaft (20), the driven wheel shaft (63) and the two protective wheel shafts (18) are respectively installed in corresponding installation holes on the two wheel shaft support plates (14) to form a whole. The two wheel shaft support plates (14) are located on the inner side of the two arc-shaped components (16). A bottom connecting cross bar (69) is installed in the middle of the lower ends of the two wheel shaft support plates (14). A gear A (21) is installed at both ends of the driving wheel shaft (20). At the connection between the driving wheel shaft (20) and the two wheel shaft support plates (14), a gear A (21) is installed. A bearing seat is installed at each place, two gears A (21) rotate with the driving wheel shaft (20), the two gears A (21) are respectively meshed with the two racks (19), two hydraulic motors A (59) are respectively installed on the two wheel shaft support plates (14), the two hydraulic motors A (59) are provided with a brake mechanism, a driving gear B (60) is installed on the output shaft of each hydraulic motor A (59), the two driving gears B (60) are respectively meshed with the two gears A (21), a driven wheel (61) is installed at each end of the driven wheel shaft (63), the two driven wheels (61) are both double-rim wheels, the double rims of the driven wheels (61) move along the outer surface of the outer arc plate of the arc-shaped member (16), and the two driven wheels (61) Bearings are installed inside, two protection wheels (17) are installed at both ends of the two protection wheel shafts (18), bearings are installed inside the four protection wheels (18), the four protection wheels (18) are installed on the inner side of the outer arc plates of the two arc-shaped components (16), and are respectively located near the gear A (21) and the driven wheel (61), the lower ends of the two telescopic rods (15) and a cylinder A (22) are hinged to the bottom connecting cross bar (69), the front ends of the two telescopic rods (15) are respectively connected to the two cross beams (25) of the profiling trolley system (24) by bolts, the front end of the piston rod of the cylinder A (22) is hinged to a cross beam (25) of the profiling trolley system (24), and the connecting rod (54) connects the outer tubes of the two telescopic rods (15) into one.A slotted hole (70) is processed in the middle of the upper part of the two wheel axle support plates (14), a travel switch A (62) is installed at the left end of each slotted hole (70), and a travel switch B (57) is installed at the right end of the slotted hole (70). A swing shaft (58) is installed on the outer side of each telescopic rod (15) and at a position corresponding to the slotted hole (70), and the length of the swing shaft (58) exceeds the wheel axle support plate (14). The pneumatic control element of the cylinder A (22) is composed of a three-position four-way reversing valve (74), a safety valve (75), a pressure reducing valve (73) and a filter (72). The safety valve is installed near the air inlet of the large cavity of the cylinder A (22), the pressure reducing valve (73) and the filter (72) are installed on the air inlet pipeline of the cylinder A (22), and the three-position four-way reversing valve (74) is connected to the two air inlets of the cylinder A (22) at the same time.

3. The extrusion molding pollution-free moxa coiling machine according to claim 1 is characterized in that: The profiling trolley system (24) is composed of two profiling longitudinal beams (31), a plurality of profiling cross beams (25), a profiling wheel shaft (27), a plurality of profiling wheels (28), a hydraulic motor B (23), a sprocket C (26), a sprocket D (29) and a chain B (30). The profiling wheel shaft (27) is provided with a plurality of profiling wheels (28) and a sprocket D (29). The profiling wheel (28) rotates together with the profiling wheel shaft (27) and the sprocket D (29). The profiling wheel shaft (27) is connected to the profiling wheel shaft through a plurality of bearing seats ( The hydraulic motor B (23) is mounted on a plurality of profiling beams (25) at the right end of the profiling trolley system (24) and is located at the midline position between the two profiling longitudinal beams (31). The profiling wheel (28) and the profiling wheel axle (27) are located outside the profiling trolley system (24). The hydraulic motor B (23) is mounted on a profiling beam (25) at the right end of the profiling longitudinal beam (31). A sprocket C (26) is mounted on the output shaft of the hydraulic motor B (23). The sprocket C (26) forms a transmission relationship with the sprocket D (29) through the chain B (30).

4. The simple shotcrete trolley according to claim 1 is characterized in that: The spray trolley system (34) is located at the left end of the profiling longitudinal beam (31), and is composed of a cylinder B (33), two spray trolley cross bars (35), four spray trolley wheels (36), four spray trolley wheel axles (37), a spray cone cylinder fixing flange (38), a spray cone cylinder (39), two spray rails (40), two spray trolley wheel outer fixing plates (41), two spray trolley wheel inner fixing plates (42), a spray trolley left end limit travel switch C (67), a spray trolley right end limit travel switch D ( 68), a distance meter A (65) on the left side of a conical cylinder (39) and a distance meter B (66) on the right side of a conical cylinder, two mold spraying tracks (40) are respectively installed on the inner sides of two profiling longitudinal beams (25), two mold spraying trolley wheels (36) and two wheel axles (37) are installed in the middle between an inner fixing plate (42) and an outer fixing plate (41) of a mold spraying trolley wheel to form a walking mechanism (76) on one side, and the two ends of the two walking mechanisms (76) are connected to the two cross bars (35) of the mold spraying trolley as a whole to form a rectangular The trolley has a double wheel rim on the mold spraying wheel (36) and rides on the track (40). The mold spraying cone cylinder fixing flange (38) and the cone cylinder (39) are connected as a whole. The mold spraying cone cylinder (39) is installed on two outer fixing plates (41) by bolts. The mold spraying cone cylinder (39) consists of a cone cylinder body (77) and a mold spraying flange (78). The taper of the mold spraying cone cylinder body (77) is greater than the brushing track of concrete after it comes out of the spray gun (43). The mold spraying flange (78) is located at the end of the cone cylinder body (77) and it is connected with the profiling wheel (28) at A straight line is formed on the shotcrete forming surface. A distance meter A (65) and a distance meter B (66) are respectively installed on both sides of the mold spraying cone cylinder (39). A travel switch C (67) is installed on the left side of the mold spraying trolley system (34) The travel switch D (68) is installed at an appropriate position on the right side of the mold spraying trolley system (34). The front end of the piston rod of the cylinder B (33) is hinged to the right side of the mold spraying trolley system (34) The cross bar (35) is hinged, and the rear end of the cylinder B (33) is hinged to the right side of the mold spraying trolley system (34).

5. The simple shotcrete trolley according to claim 1 is characterized in that: The spray gun system (49) is composed of a spray gun (43), a high-pressure gas and quick-setting agent adding pipe (44), a spray gun fixing plate (45), a concrete delivery hose (46), a spray gun brush frame (47), a universal joint (48), a spray gun swing frame (50), a swing motor (51), an eccentric wheel (52) and a mounting plate (53). The front end of the spray gun (43) is inserted into the mold spray cone cylinder (39), and the spray gun (43) is installed on the brush frame (47) through the fixing plate (45). 7), the rear end of the brush frame (47) is connected to the swing frame (50) through a universal joint (48), the front end of the brush frame (47) is connected to the eccentric wheel disc (52), the swing motor (51) is installed at the front of the swing frame (50), the eccentric wheel disc (52) is installed on the output shaft of the swing motor (51), one end of the mounting plate (53) is connected to the spray gun swing frame (50), and the other end is connected to the cross bar (35) on one side of the mold spray trolley system (34) as a whole.

6. The simple shotcrete trolley according to claim 1 is characterized in that: Cylinder A (22) and cylinder B (33) can also be replaced by hydraulic cylinders.

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