Tunnel shotcrete recycling machine

Abstract

The present application relates to a tunnel shotcrete recycling machine, comprising a telescopic mechanism and a first and second mobile platforms arranged opposite each other. The first and second mobile platforms are each provided with a material collecting device at their upper ends. The telescopic mechanism is hinged to the first and second mobile platforms at both ends. A conveyor belt is sleeved on the telescopic mechanism. A belt conveyor mechanism for driving the conveyor belt is provided within the first mobile platform. The telescopic mechanism is used to adjust the spacing between the first and second mobile platforms. A concrete conveyor mechanism is provided within the second mobile platform. The present application can collect and reuse the rebound portion of shotcrete, thereby improving the utilization rate of shotcrete and reducing the cost of tunnel shotcrete construction.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel construction machinery, in particular to a tunnel shotcrete recycling machine. Background Art

[0002] At present, my country's highway tunnels are basically designed and constructed according to the New Austrian Tunneling Method (NATM), consisting of initial support and secondary lining. Sprayed concrete technology is a key technology in NATM tunnel construction. Concrete spraying machinery is used to spray rapid-setting concrete onto the surface of rocks or structures to strengthen and protect them.

[0003] Shotcrete rebound refers to the amount of concrete that falls off the surrounding rock when aggregate, water, or pre-mixed concrete is sprayed onto the concrete during the shotcreting process. Therefore, controlling rebound not only affects the support quality of shotcrete but also plays a crucial role in project cost control. Research has shown that shotcrete rebound in tunnel projects currently ranges from 20% to 30%, resulting in significant losses. This is unavoidable because many factors influence shotcrete rebound, including the concrete mix ratio, the air volume during shotcreting, and the distance between the spray nozzle and the rock surface. Tunnel construction projects currently have relatively transparent profit margins, and poor construction control can result in losses. Therefore, controlling shotcrete rebound during construction has historically been a crucial component of tunnel construction cost control. However, these methods only control shotcrete rebound, leaving the rebound concrete largely untreated. Therefore, reusing this rebound can have significant economic value for the project. Summary of the Invention

[0004] In response to the problems existing in the prior art, the present invention provides a tunnel shotcrete recycling machine that can collect the rebound part of the shotcrete and reuse it, thereby improving the utilization rate of the shotcrete and reducing the construction cost of the tunnel shotcrete.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: a tunnel shotcrete recycling machine, comprising:

[0006] A first mobile platform and a second mobile platform are arranged opposite to each other, wherein upper ends of the first mobile platform and the second mobile platform are respectively provided with a material collecting device;

[0007] a telescopic mechanism, the two ends of which are respectively hinged to the first mobile platform and the second mobile platform; a conveyor belt is sleeved on the telescopic mechanism; a belt conveying mechanism for driving the conveyor belt is provided in the first mobile platform; the telescopic mechanism is used to adjust the distance between the first mobile platform and the second mobile platform; a concrete conveying mechanism is provided in the second mobile platform;

[0008] The aggregate collecting device is used to collect the rebounded concrete aggregate and transport the collected concrete aggregate to the conveyor belt, and the concrete conveying mechanism is used to transport the concrete aggregate transported by the conveyor belt to the required position.

[0009] As a preferred embodiment, the material collecting device includes a first oil cylinder, a base plate and a material collecting plate located above the base plate, a support plate and a connecting rod are hingedly provided between the base plate and the material collecting plate, there are two support plates and two connecting rods, a rotating shaft is provided between the two support plates, the piston rod end of the first oil cylinder is hinged to the rotating shaft, and the other end is hinged to.

[0010] As a preferred solution, a vibration motor is provided at the bottom of the collecting plate.

[0011] As a preferred solution, the telescopic mechanism includes two scissor-type telescopic frames, and a second oil cylinder for driving the scissor-type telescopic frames to extend and retract is provided on the second movable platform. A plurality of first rollers are evenly distributed between the two scissor-type telescopic frames, and the plurality of first rollers are evenly distributed at the upper and lower ends of the scissor-type telescopic frames. One end of the scissor-type telescopic frame is hinged to the first movable platform, and the other end is hinged to the second movable platform. The scissor-type telescopic frame is hinged at the end near the second movable platform and is provided with two first connecting plates, one end of the two first connecting plates is hinged to each other in a V shape, and the other ends of the two first connecting plates are respectively hinged to the scissor-type telescopic frames, wherein a first roller is provided between the two opposite first connecting plates, and the first roller is located at the hinge of the two first connecting plates on the same side.

[0012] As a preferred solution, a first connecting shaft, a second connecting shaft and a third connecting shaft are rotatably provided between the two scissor-type telescopic frames. The first connecting shaft and the third connecting shaft are located at both ends of the scissor-type telescopic frames, and the second connecting shaft is arranged close to the third connecting shaft. The two ends of the first connecting shaft are respectively hinged to the first mobile platform, and the two ends of the third connecting shaft are respectively hinged to the second mobile platform. One end of the second oil cylinder is hinged to the second mobile platform, and the other end is hinged to the second connecting shaft.

[0013] As a preferred solution, the concrete conveying mechanism includes a hopper arranged in the second mobile platform, a conveying pipe arranged at the lower end of the hopper and connected to it, and a spiral conveying blade arranged in the conveying pipe. A driving motor is provided at one end of the conveying pipe and a discharge port is provided at the other end. The driving motor is used to drive the spiral conveying blade to rotate so as to realize the movement of concrete aggregate to the discharge port.

[0014] As a preferred solution, the first mobile platform and the second mobile platform are respectively provided with a driving mechanism, and the driving mechanism includes a driving wheel and a steering mechanism for driving the driving wheel to turn.

[0015] As a preferred solution, the driving wheel includes a tire, a driving motor, a bracket and a rim. The tire is fixed on the rim, the rim is connected to the outer shell of the driving motor, and the bracket is connected to the inner shell of the driving motor. The driving motor rotates the outer shell to drive the tire to rotate, thereby realizing walking drive.

[0016] As a preferred solution, the belt conveyor mechanism includes a driving reducer, a driving roller and a belt adjustment mechanism. The driving reducer is used to drive the driving roller to rotate, the conveying belt is sleeved on the driving roller, and the belt adjustment mechanism is used to adjust the tightness of the conveying belt.

[0017] As a preferred solution, the belt adjustment mechanism includes two relatively arranged fixed plates, an adjustment component rotatably arranged between the two fixed plates, and a belt adjustment motor that drives the adjustment component to rotate. The adjustment component includes a relatively arranged fixed flange and a driving flange, two second rollers are provided between the fixed flange and the driving flange, the conveyor belt is located between the two second rollers, the fixed flange is rotatably connected to one of the fixed plates, and the driving flange is connected to the output shaft of the belt adjustment motor.

[0018] The beneficial effects of the present application are as follows: 1. The present application collects the rebounded part of the concrete aggregate through the aggregate collection device and conveys the collected concrete aggregate to the conveyor belt. The belt conveyor mechanism drives the conveyor belt to move. The concrete conveying mechanism is used to convey the concrete aggregate conveyed by the conveyor belt to the required position, effectively collecting the rebound part of the shotcrete and reusing it, thereby improving the utilization rate of the shotcrete and reducing the construction cost of tunnel shotcrete.

[0019] 2. The aggregate collecting device can be adjusted in multiple directions, and the length of the whole machine can be adjusted through the telescopic mechanism and belt adjustment mechanism to meet the construction needs of different tunnel sections.

[0020] 3. By setting up driving wheels and steering mechanisms, all-wheel drive and all-wheel steering can be achieved, and lateral and longitudinal walking can be achieved with strong flexibility.

[0021] 4. The first mobile platform, the second mobile platform and the telescopic mechanism are all articulated structures, and the entire structure can better adapt to the uneven road surface in the tunnel.

[0022] 5. By setting up a vibration motor, the concrete aggregate is accelerated and falls onto the conveyor belt under its vibration. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0024] Figure 2 It is a structural schematic diagram of the material collecting device of the present invention;

[0025] Figure 3 For Figure 2 Schematic diagram of the structure as seen at point A in the middle;

[0026] Figure 4 It is a structural schematic diagram of the horizontal state of the material collecting device of the present invention;

[0027] Figure 5 It is a structural schematic diagram of the telescopic mechanism of the present invention;

[0028] Figure 6 for Figure 5 A top view of

[0029] Figure 7 for Figure 5 Middle BB cross-section;

[0030] Figure 8 It is a structural schematic diagram of the concrete conveying mechanism of the present invention;

[0031] Figure 9 for Figure 8 A top view of

[0032] Figure 10 is a schematic structural diagram of the second mobile platform of the present invention;

[0033] Figure 11 for Figure 10 A top view of

[0034] Figure 12 Schematic diagram of the structure of the first mobile platform and the belt conveyor mechanism of the present invention;

[0035] Figure 13 For Figure 12 Schematic diagram of the structure seen at point C in the middle;

[0036] Figure 14 for Figure 12 A top view of

[0037] Figure 15 Schematic diagram of the structure of the belt adjustment mechanism;

[0038] Figure 16 Schematic diagram of the structure of the driving wheel;

[0039] Figure 17 from Figure 16 Schematic diagram of the structure seen at point D in the middle;

[0040] Figure 18 Schematic diagram of the structure of the drive motor;

[0041] Figure 19 It is a state diagram of the present invention moving in the left and right directions;

[0042] Figure 20 It is a state diagram of the present invention moving forward and backward;

[0043] Figure 21 This is a schematic diagram of an application scenario of the present invention;

[0044] Figure 22 Schematic diagram of the second scene of the application of the present invention;

[0045] Figure 23 This is a simulation diagram of the present invention adapting to uneven road surfaces.

[0046] Markings in the figure: 1. Aggregate device, 101. Aggregate plate, 102. Vibration motor, 103. Support plate, 104. Bottom plate, 105. First oil cylinder, 106. Connecting rod, 107. Rotating shaft, 2. First mobile platform, 201. First mounting plate, 3. Telescopic mechanism, 301. First connecting shaft, 302. Scissor-type telescopic frame, 302-1. Second connecting plate, 303. First roller, 304. First connecting plate, 305. Third connecting shaft, 306. Second connecting shaft, 307. Third roller, 4. Conveyor belt, 5. Second mobile platform, 501. Second mounting plate, 502. Hydraulic pump station, 6. Concrete conveying mechanism, 601. Aggregate hopper, 6 02. Drive motor, 603. Conveying pipe, 604. Spiral conveying blade, 605. Discharge port, 7. Drive wheel, 701. Tire, 702. Bracket, 703. Steering shaft, 704. Drive motor, 704-1. Outer shell, 704-2. Inner shell, 705. Rim, 8. Belt conveyor mechanism, 801. Drive reducer, 802. Drive roller, 803. Fixed plate, 804. Belt adjustment motor, 805. Second roller, 806. Drive flange, 807. Fixed flange, 9. Second cylinder, 10. Steering arm, 11. Steering cylinder, 12. Wet spraying trolley, 13. Recovery hose, 14. Rebound concrete aggregate, 15. Tunnel contour line. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that in the description of the present invention, unless otherwise specified, the meaning of "multiple" is two or more; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0048] See also Figure 1-18 The present invention provides a tunnel shotcrete recycling machine, comprising: a telescopic mechanism 3 and a first mobile platform 2 and a second mobile platform 5 arranged relatively to each other, wherein a collecting device 1 is provided on the upper ends of the first mobile platform 2 and the second mobile platform 5 respectively, and the two ends of the telescopic mechanism 3 are hinged to the first mobile platform 2 and the second mobile platform 5 respectively, and a conveyor belt 4 is sleeved on the telescopic mechanism 3, and a belt conveying mechanism 8 for driving the conveyor belt 4 to move is provided in the first mobile platform 2, and the telescopic mechanism 3 is used to adjust the distance between the first mobile platform 2 and the second mobile platform 5, and a concrete conveying mechanism 6 is provided in the second mobile platform 5, and the collecting device 1 is used to collect the rebound part of the concrete aggregate and convey the collected concrete aggregate to the conveyor belt 4, and the concrete conveying mechanism 6 is used to convey the concrete aggregate conveyed by the conveyor belt 4 to the required position.

[0049] Among them, such as Figure 1-4 As shown, the collecting device 1 includes a first oil cylinder 105, a base plate 104 and a collecting plate 101 located above the base plate 104, the collecting plate 101 includes a base plate and two side plates, the two side plates are located on both sides of the base plate, the angle between the side plate and the base plate is an obtuse angle, the base plate and the two side plates are made as one piece, a support plate 103 and a connecting rod 106 are hinged between the base plate 104 and the collecting plate 101, the upper and lower ends of the support plate 103 are hinged to the collecting plate 101 and the base plate 104 respectively, the upper and lower ends of the connecting rod 106 are hinged to the collecting plate 101 and the base plate 104 respectively, there are two support plates 103 and connecting rod 106, a rotating shaft 107 is provided between the two support plates 103, the piston rod end of the first oil cylinder 105 is hinged to the rotating shaft 107, and the other end is hinged to, a vibration motor 102 is provided at the bottom of the collecting plate 101.

[0050] The piston rod ends of the two first oil cylinders 105 are arranged back to back, the length of the support plate 103 is greater than the length of the connecting rod 106, the first oil cylinder 105 is located between the support plate 103 and the connecting rod 106, and the connecting rod 106 is arranged close to the telescopic mechanism. The outer tube of the first oil cylinder 105 is hinged to the bottom plate 104 by a pin shaft and a cotter pin. The above-mentioned hinge can be achieved by hinged means of a pin shaft and a cotter pin, which will not be repeated here. When the piston rods of the two first oil cylinders 105 are extended, the two collecting plates 101 are tilted to form a V shape respectively. When the piston rod of the first oil cylinder 105 is extended to drive the collecting plate 101 to tilt, the angle between the collecting plate 101 and the horizontal direction is an acute angle. The collecting plate 101 can adjust its position by the extension and contraction of the first oil cylinder 105. The collecting plate 101 can be tilted to a horizontal position in multiple directions through the connecting rod structure. The horizontal state of the collecting plate 101 is as follows Figure 4 As shown, the main function of the vibration motor 102 is to accelerate the concrete aggregate to fall onto the conveyor belt 4 through the vibration of the vibration motor 102 when the concrete aggregate has a high viscosity and may accumulate on the aggregate plate 101 after falling.

[0051] like Figure 1 、 Figure 5 、 Figure 6 and Figure 7 As shown, the telescopic mechanism 3 includes two scissor-type telescopic frames 302, and the second mobile platform 5 is provided with a second oil cylinder 9 for driving the scissor-type telescopic frames 302 to extend and retract. A plurality of first rollers 303 are evenly distributed between the two scissor-type telescopic frames 302, and the plurality of first rollers 303 are evenly distributed on the upper and lower ends of the scissor-type telescopic frames 302. One end of the scissor-type telescopic frame 302 is hinged to the first mobile platform 2, and the other end is hinged to the second mobile platform 5. The scissor-type telescopic frame 302 is hinged to the end near the second mobile platform 5 with two first connecting plates 304, one end of the two first connecting plates 304 is hinged to each other in a V shape, and the other ends of the two first connecting plates 304 are respectively hinged to the scissor-type telescopic frames 302, wherein the two opposite first connecting plates 304 are hinged to each other. A third roller 307 is provided, and the first roller 303 is located at the hinge of the two first connecting plates 304 on the same side. The two first connecting plates 304 are hinged by a third hinge shaft, and the other end of the first connecting plate 304 is hinged to the scissor-type telescopic frame 302 through a fourth hinge shaft. The third roller 307 is arranged between the two third hinge shafts. The telescopic frame body of the scissor-type telescopic frame 302 is hinged by a number of telescopic units. The telescopic unit includes two second connecting plates 302-1 hinged in a cross shape. The connection between the two second connecting plates 302-1 in the telescopic unit is hinged by the first hinge shaft, and the second connecting plates 302-1 of adjacent telescopic units are hinged by the second hinge shaft. The first roller 303 is arranged between the two opposite second hinge shafts.

[0052] The distance between the first mobile platform 2 and the second mobile platform 5 is adjusted by extending and retracting the second oil cylinder 9, so that the whole machine can be deployed to the length of the tunnel section, expanding the receiving range of the vault concrete aggregate. The telescopic mechanism 3 can be extended or retracted as a whole through the second oil cylinder 9, realizing the switching of the working state (expanded) and the walking state (retracted) of the whole machine. The length of the telescopic mechanism 3 can be adjusted according to the different tunnel sections by adjusting the number of the second connecting plates 302-1, such as Figure 23 As shown, the first mobile platform 2, the second mobile platform 5 and the telescopic mechanism 3 are all hinged structures, and the entire structure can better adapt to the uneven road surface in the tunnel.

[0053] Specifically, a first connecting shaft 301, a second connecting shaft 306 and a third connecting shaft 305 are rotatably provided between the two scissor-type telescopic frames 302. The first connecting shaft 301 and the third connecting shaft 305 are located at both ends of the scissor-type telescopic frame 302, and the second connecting shaft 306 is arranged close to the third connecting shaft 305. Both ends of the first connecting shaft 301 are respectively hinged to the first mobile platform 2, and both ends of the third connecting shaft 305 are respectively hinged to the second mobile platform 5. One end of the second oil cylinder 9 is hinged to the second mobile platform 5, and the other end is hinged to the second connecting shaft 306. There are two second oil cylinders 9, and two supports are provided on the second mobile platform 5. The outer shell of the second oil cylinder 9 is hinged to the support. The first mobile platform 2 is provided with two first mounting plates 201 on the side relative to the scissor-type telescopic frame 302. The two ends of the first connecting shaft 301 are respectively hinged to the two first mounting plates 201. The second mobile platform 5 is provided with two second mounting plates 501 on the side relative to the scissor-type telescopic frame 302, and the two ends of the third connecting shaft 305 are respectively hinged to the two second mounting plates 501.

[0054] like Figure 8 and Figure 9 As shown, the concrete conveying mechanism 6 includes a hopper 601 arranged in the second mobile platform 5, a conveying pipe 603 arranged at the lower end of the hopper 601 and connected to it, and a spiral conveying blade 604 arranged in the conveying pipe 603. A driving motor 602 is provided at one end of the conveying pipe 603, and a discharge port 605 is provided at the other end. The driving motor 602 is used to drive the spiral conveying blade 604 to rotate so as to realize the movement of concrete aggregate to the discharge port 605. The hopper 601 is funnel-shaped, with a large opening at the upper end and a small opening pin at the lower end. The hopper 601 is located below the end of the conveying direction of the conveyor belt 4, and can collect concrete aggregate conveyed by the conveyor belt 4. The discharge port 605 can be connected to a hose to convey the concrete aggregate to the concrete pump hopper of the wet spraying trolley, or it can be conveyed to a designated location for other purposes.

[0055] like Figure 10-14As shown, the first mobile platform 2 and the second mobile platform 5 are respectively provided with a driving mechanism, and the driving mechanism includes a driving wheel 7 and a steering mechanism for driving the driving wheel 7 to turn, as shown in FIG. Figure 16-18 As shown, the driving wheel 7 includes a tire 701, a driving motor 704, a bracket 702 and a rim 705. The tire 701 is fixed on the rim 705, and the rim 705 is connected to the outer shell 704-1 of the driving motor 704. The bracket 702 is connected to the inner shell 704-2 of the driving motor 704. The outer shell 704-1 is rotated by the driving motor 704 to drive the tire 701 to rotate, so as to realize walking drive. The driving motor 704 is a hub motor. The present application is an all-wheel drive, which can be used for collecting concrete aggregates in full-section or step-method construction and has a high climbing grade.

[0056] The steering mechanism includes four steering arms 10 and four steering cylinders 11. The bracket 702 is in a 7 shape. A steering shaft 703 is vertically provided on the bracket 702. One end of the steering arm 10 is connected to the steering shaft 703, and the other end is hinged to the piston rod of the steering cylinder 11. The steering cylinder 11 is hingedly arranged in the first mobile platform 2 or the second mobile platform 5. The steering arm 10 is in a V shape. The hydraulic pump station 502 is connected to the steering cylinder 11. The steering of the drive wheel 7 is realized by driving the steering cylinder 11 to extend and retract through the hydraulic pump station 502.

[0057] like Figure 12-14 As shown, the belt conveyor mechanism 8 includes a driving reducer 801, a driving roller 802 and a belt adjusting mechanism. The driving reducer 801 is used to drive the driving roller 802 to rotate, and the conveying belt 4 is sleeved on the driving roller 802. The belt adjusting mechanism is used to adjust the tightness of the conveying belt 4. Figure 14 As shown, the belt adjustment mechanism includes two relatively arranged fixed plates 803, an adjustment component rotatably arranged between the two fixed plates 803, and a belt adjustment motor 804 that drives the adjustment component to rotate. The adjustment component includes a relatively arranged fixed flange 807 and a driving flange 806. Two second rollers 805 are provided between the fixed flange 807 and the driving flange 806. The conveyor belt 4 is located between the two second rollers 805. The fixed flange 807 is rotatably connected to one of the fixed plates 803. The driving flange 806 is connected to the output shaft of the belt adjustment motor 804. The belt adjustment motor 804 is arranged on the other fixed plate 803. When the telescopic mechanism 3 is recovered, for the excess conveyor belt 4, the belt adjustment motor 804 can be rotated to drive the second rollers 805 to roll up the excess conveyor belt 4 to achieve belt tightness adjustment.

[0058] The present application can realize the contraction of the length direction of the whole machine, and the telescopic direction of the telescopic mechanism 3 is defined as the left and right direction, and the width direction of the telescopic mechanism 3 is the front and back direction. At the same time, the collecting plate 101 can also be retracted to the horizontal state. The retracted state of the whole machine is shown in the attached figure. Figure 19 As shown, in this state, the whole machine can realize horizontal walking (left and right direction), and the driving wheel 7 can realize 90° turning, as shown in the attached figure. Figure 20 As shown, in this state, the whole machine can realize longitudinal walking (front and back direction).

[0059] Machine application scenarios such as Figure 21 and Figure 22 As shown, this application is mainly used to collect concrete aggregates that fall within the 120° range of the vault. Figure 22 The tunnel contour line 15 is marked in the figure. The wet spraying trolley 12 is connected to the discharge port 605 of this application through the recovery hose 13. If the rebound concrete aggregate 14 falls onto the conveyor belt 4, the rebound concrete aggregate 14 is driven by the belt conveyor mechanism 8 to operate the conveyor belt 4 and transport the rebound concrete aggregate 14 to the concrete conveying mechanism 6. If the rebound concrete aggregate 14 falls on the aggregate plate 101, the aggregate platform 1 accelerates the rebound concrete aggregate 14 to the conveyor belt 4 through the vibration action of the vibration motor 102. The concrete conveying mechanism 6 conveys the concrete aggregate to the wet spraying trolley hopper or other required places through the recovery hose 13. The length of the conveyor belt 4 can be replaced according to different tunnel sections to adapt to the width range of tunnel construction with different sections.

[0060] It should be noted that the above embodiments are only used to illustrate the present invention, but the present invention is not limited to the above embodiments. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention fall within the scope of protection of the present invention.

Claims

1. A tunnel shotcrete recycling machine, characterized in that: include: A first mobile platform (2) and a second mobile platform (5) are arranged opposite to each other, and a material collecting device (1) is provided at the upper end of each of the first mobile platform (2) and the second mobile platform (5); A telescopic mechanism (3) having two ends hinged to the first mobile platform (2) and the second mobile platform (5), respectively; a conveying belt (4) is sleeved on the telescopic mechanism (3); a belt conveying mechanism (8) for driving the conveying belt (4) is provided in the first mobile platform (2); the telescopic mechanism (3) is used to adjust the distance between the first mobile platform (2) and the second mobile platform (5); and a concrete conveying mechanism (6) is provided in the second mobile platform (5); The aggregate collecting device (1) is used to collect the rebounded concrete aggregate and convey the collected concrete aggregate to the conveyor belt (4); the concrete conveying mechanism (6) is used to convey the concrete aggregate conveyed by the conveyor belt (4) to a desired location; The material collecting device (1) comprises a first oil cylinder (105), a bottom plate (104) and a material collecting plate (101) located above the bottom plate (104); a support plate (103) and a connecting rod (106) are hingedly provided between the bottom plate (104) and the material collecting plate (101); there are two support plates (103) and two connecting rods (106); a rotating shaft (107) is provided between the two support plates (103); an end of the piston rod of the first oil cylinder (105) is hingedly connected to the rotating shaft (107), and the other end is hingedly connected to the bottom plate (104); the length of the support plate (103) is greater than the length of the connecting rod (106); the first oil cylinder (105) is located between the support plate (103) and the connecting rod (106); A vibration motor (102) is provided at the bottom of the collecting plate (101); The telescopic mechanism (3) comprises two scissor-type telescopic frames (302), a second oil cylinder (9) for driving the scissor-type telescopic frames (302) to telescope is provided on the second mobile platform (5), a plurality of first rollers (303) are evenly distributed between the two scissor-type telescopic frames (302), and the plurality of first rollers (303) are evenly distributed at the upper and lower ends of the scissor-type telescopic frames (302), one end of the scissor-type telescopic frame (302) is hinged to the first mobile platform (2), and the other end is hinged to the second mobile platform (5), and the end of the scissor-type telescopic frame (302) close to the second mobile platform (5) is hingedly provided with two first connecting plates (304), one end of the two first connecting plates (304) is hinged to each other in a V shape, and the other ends of the two first connecting plates (304) are respectively hinged to the scissor-type telescopic frames (302), wherein a third roller (307) is provided between the two opposite first connecting plates (304), and the first rollers (303) are located at the hinged joints of the two opposite first connecting plates (304).

2. The tunnel shotcrete recycling machine according to claim 1, characterized in that: A first connecting shaft (301), a second connecting shaft (306) and a third connecting shaft (305) are rotatably provided between the two scissor-type telescopic frames (302). The first connecting shaft (301) and the third connecting shaft (305) are located at both ends of the scissor-type telescopic frames (302). The second connecting shaft (306) is arranged close to the third connecting shaft (305). Both ends of the first connecting shaft (301) are respectively hinged to the first mobile platform (2). Both ends of the third connecting shaft (305) are respectively hinged to the second mobile platform (5). One end of the second oil cylinder (9) is hinged to the second mobile platform (5), and the other end is hinged to the second connecting shaft (306).

3. The tunnel shotcrete recycling machine according to claim 1, characterized in that: The concrete conveying mechanism (6) comprises a collection hopper (601) arranged in the second mobile platform (5), a conveying pipe (603) arranged at the lower end of the collection hopper (601) and connected thereto, and a spiral conveying blade (604) arranged in the conveying pipe (603). A driving motor (602) is provided at one end of the conveying pipe (603), and a discharge port (605) is provided at the other end. The driving motor (602) is used to drive the spiral conveying blade (604) to rotate, so as to realize the movement of concrete aggregate toward the discharge port (605).

4. The tunnel shotcrete recycling machine according to claim 1, characterized in that: The first mobile platform (2) and the second mobile platform (5) are respectively provided with a driving mechanism, wherein the driving mechanism comprises a driving wheel (7) and a steering mechanism for driving the driving wheel (7) to steer.

5. The tunnel shotcrete recycling machine according to claim 4, characterized in that: The driving wheel (7) comprises a tire (701), a driving motor (704), a bracket (702) and a rim (705); the tire (701) is fixed to the rim (705); the rim (705) is connected to an outer shell (704-1) of the driving motor (704); the bracket (702) is connected to an inner shell (704-2) of the driving motor (704); the driving motor (704) rotates the outer shell (704-1) to drive the tire (701) to rotate, thereby achieving walking drive.

6. A tunnel shotcrete recycling machine according to any one of claims 1 to 5, characterized in that: The belt conveying mechanism (8) comprises a driving reducer (801), a driving roller (802) and a belt adjusting mechanism, wherein the driving reducer (801) is used to drive the driving roller (802) to rotate, the conveying belt (4) is sleeved on the driving roller (802), and the belt adjusting mechanism is used to adjust the tightness of the conveying belt (4).

7. The tunnel shotcrete recycling machine according to claim 6, characterized in that: The belt adjustment mechanism comprises two fixed plates (803) arranged opposite to each other, an adjustment component rotatably arranged between the two fixed plates (803), and a belt adjustment motor (804) for driving the adjustment component to rotate. The adjustment component comprises a fixed flange (807) and a driving flange (806) arranged opposite to each other. Two second rollers (805) are arranged between the fixed flange (807) and the driving flange (806). The conveying belt (4) is located between the two second rollers (805). The fixed flange (807) is rotatably connected to one of the fixed plates (803). The driving flange (806) is connected to the output shaft of the belt adjustment motor (804).

Images