A transfer trolley for tunnel construction

Abstract

The application discloses a transfer trolley for tunnel construction and relates to the technical field of tunnel construction.The transfer trolley comprises a trolley plate frame, a material supporting plate and a rotating frame mechanism.The rotating frame mechanism comprises a lower rotating disc, a rotating frame body and a height adjusting assembly.The height adjusting assembly can adjust the position of the material supporting plate in the vertical direction.At least one avoiding hole is formed in the length direction of the material supporting plate.A guide groove is arranged on the upper end surface of the trolley plate frame and close to the position of the lower rotating disc.The pushing component comprises a pushing shaft part, a lower movable support and at least one pushing rod.The lower movable support can move in the guide groove.When the lower movable support moves along the guide groove, the pushing rod can move along the avoiding hole relative to the material supporting plate.The application has the advantages of simple structure, convenient operation for construction personnel, automatic unloading of construction materials, improved transfer efficiency and high practicability.

Description

Technical Field

[0001] This invention relates to the field of tunnel construction technology, specifically a transport vehicle for tunnel construction. Background Technology

[0002] Highway tunnels are passageways specifically designed for automobile transportation. With the development of society, economy, and production, a large number of expressways have emerged, which has placed higher standards on road construction technology, requiring straight routes, gentle slopes, and wide road surfaces. The construction of tunnels plays an important role in improving the technical condition of highways, shortening travel distances, increasing transportation capacity, and reducing accidents.

[0003] During tunnel construction, construction materials need to be transported to the depths of the tunnel; therefore, tunnel transport vehicles are required. Current tunnel transport vehicles are divided into rail-guided transport vehicles and trackless transport vehicles. Trackless transport vehicles are mostly truck-type transport vehicles, while rail-guided transport vehicles run on tracks laid on the ground. Trackless transport vehicles need to turn around when transporting construction vehicles and are limited by the tunnel space, making operation extremely inconvenient. Existing rail-guided transport vehicles only transport construction materials to the depths of the tunnel, requiring manual loading and unloading, and the vehicles are prone to shaking during loading and unloading, affecting the efficiency of construction material transportation. Summary of the Invention

[0004] The purpose of this invention is to provide a transport vehicle for tunnel construction to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A tunnel construction transport vehicle includes a platform frame, a material support plate, a material pushing component, and a rotating frame mechanism. The platform frame has rail wheels on its sides that can move on tunnel slide rails. The rotating frame mechanism includes a lower rotating disk, a rotating frame body, and a height adjustment component. The lower rotating disk is located on one end of the upper surface of the platform frame. The rotating frame body is located on the upper surface of the lower rotating disk, and the height adjustment component is located on the rotating frame body. One end of the material support plate is slidably engaged with the rotating frame body and connected to the height adjustment component. The height adjustment component can adjust the vertical position of the material support plate. The material support plate has at least one clearance hole along its length and is used to carry the construction materials to be transported. The upper end of the platform frame... A guide groove is provided near the lower rotating disk, and the two ends of the guide groove extend to the two sides of the lower rotating disk. At least one pusher rack is provided on the side of the lower rotating disk. The pusher component includes a pusher shaft, a lower movable support, and at least one pusher rod. The lower movable support is located inside the guide groove and can move inside the guide groove. The pusher shaft is rotatably located on the top of the lower movable support, and the end of the lower movable support is provided with a pusher gear that meshes with the pusher rack. The lower end of the pusher rod is fixedly connected to the pusher shaft, and the top end of the pusher rod passes through the corresponding clearance hole and extends to the upper side of the support plate. When the lower movable support moves along the guide groove, the pusher rod can move relative to the support plate along the clearance hole.

[0007] Based on the above technical solutions, the present invention also provides the following optional technical solutions:

[0008] In one alternative: the guide groove includes an arc portion and two straight portions, the arc portion being located between the two straight portions, the ends of the two straight portions away from the arc portion extending to the side of the vehicle frame, the center of the arc portion coinciding with the center of the lower rotating disk, and the central angle of the arc portion being 30-45 degrees.

[0009] In one alternative embodiment: the side of the rotating frame is provided with a handle and a control button is provided on the handle; the height adjustment assembly includes an adjusting screw, a sliding beam and an adjusting motor; the adjusting screw is rotatably mounted on the rotating frame; the adjusting motor is located at the top of the rotating frame and its output end is connected to the top of the adjusting screw; both ends of the sliding beam are slidably engaged with the rotating frame and the adjusting screw spirally passes through the sliding beam; one end of the material support plate is fixedly connected to one side of the sliding beam.

[0010] In one alternative embodiment: the end of the pallet away from the rotating frame mechanism is an arc structure centered on the axis of the lower rotating disk; the end of the pallet frame away from the rotating frame mechanism is also provided with a supporting and blocking part, the supporting and blocking part including a front stop and a supporting part; the front stop is fixed to the end of the pallet frame and the end of the pallet away from the rotating frame mechanism contacts the side arc of the front stop; the supporting part is fixed to the side wall of the front stop facing the pallet and is provided with a plurality of supporting balls for rolling contact with the bottom surface of the pallet; the upper end surface of the front stop is higher than the upper surface of the pallet.

[0011] In one alternative embodiment: protective frame mechanisms are provided on both sides of the vehicle frame, and the protective frame mechanisms include two parallel switching shafts and two side blocking units located on both sides of the vehicle frame. The two switching shafts are rotatably mounted at the bottom of the vehicle frame, and the two side blocking units are connected to the ends of the two switching shafts. A blocking switching assembly is also provided at the bottom of the vehicle frame, and the blocking switching assembly is connected to both switching shafts. The blocking switching assembly is used to drive the switching shafts to rotate and switch the two side blocking units between a vertical state and a horizontal state. The top of the side blocking unit in the vertical state is higher than the upper surface of the material plate. When the side blocking unit rotates to the horizontal state, the blocking switching assembly can also restrict the movement of the track wheel components on the tunnel slide rail.

[0012] In one alternative embodiment: the side stop unit includes two side rods and multiple crossbars. One end of each of the two side rods is fixedly connected to the ends of two switching shafts. Multiple crossbars are arranged side by side between the two side rods. The two ends of the topmost crossbar are rotatably connected to the ends of the two side rods. The two ends of the remaining crossbars are rotatably connected to connecting sleeves. The connecting sleeves slide on the corresponding side rods. Adjacent crossbars are connected by multiple connecting ropes.

[0013] In one alternative embodiment: a switching gear is provided on the switching shaft; the track wheel assembly includes a wheel axle, a wheel, and a brake roller mounted on the wheel axle; both ends of the wheel axle are rotatably connected to the bottom of the vehicle frame; there are two wheels, and the two wheels are fixed to both ends of the wheel axle; the blocking switching assembly includes a movable rod, a movable plate, and a switching cylinder; the top of the movable plate is slidably connected to the bottom surface of the vehicle frame; the switching cylinder is fixed to one end of the vehicle frame and one end of the switching cylinder is connected to the movable plate; one end of the movable rod is connected to the movable plate, and the movable rod is provided with an arc-shaped brake sleeve and a switching rack that meshes with the switching gear; the arc-shaped brake sleeve can be fitted onto the brake roller and restrict the rotation of the brake roller.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] 1. In this invention, the material support plate is set up in a suspended manner to support the construction materials to be transferred. The material support plate can rotate to both sides of the vehicle frame, so that the construction materials can be transported to the unloading point, which is convenient for construction personnel to handle.

[0016] 2. In this invention, when the material support plate rotates to both sides of the vehicle frame, the push rod can move and rotate relative to the material support plate towards the side away from the rotating frame mechanism. The push rod can push the construction material on the material support plate out from the end of the material support plate away from the rotating frame mechanism, thereby completing automatic unloading, which is convenient and quick.

[0017] 3. The present invention has a simple structure and can rotate the construction materials to the side of the vehicle frame for unloading, which is convenient for construction personnel to operate. In addition, the construction materials can be directly pushed out of the pallet to realize automatic unloading, improve the transfer efficiency, and have strong practicality. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the front axle side structure of the transfer vehicle in one embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the lateral axle structure of the transfer vehicle in one embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of the structure of the car frame and the pusher component in one embodiment of the present invention.

[0021] Figure 4 This is a schematic diagram of the material support plate structure in one embodiment of the present invention.

[0022] Figure 5 This is a schematic diagram of the protective frame mechanism and blocking switching component in one embodiment of the present invention.

[0023] Reference numerals in the attached drawings: Car frame 100, guide groove 110, front stop 120, support part 130, support ball bearing 140, track wheel assembly 200, wheel 210, wheel axle 220, brake roller 230, material support plate 300, clearance hole 310, rotating frame mechanism 400, lower rotating disk 410, rotating frame body 420, adjusting screw 430, sliding crossbeam 440, handle part 450, adjusting motor 460, protective frame mechanism 500. The components include: a switching shaft 510, a side rod 520, a switching gear 530, a crossbar 540, a connecting sleeve 550, a connecting rope 560, a pushing component 600, a pushing shaft 610, a lower movable support 620, a pushing gear 630, a pushing rod 640, a tunnel slide rail 700, a blocking switching assembly 800, a movable rod 810, an arc-shaped brake sleeve 820, a switching rack 830, a movable plate 840, a switching cylinder 850, and a pushing rack 900. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. In the drawings or description, similar or identical parts are referred to by the same reference numerals, and in practical applications, the shape, thickness, or height of each component may be enlarged or reduced. The embodiments listed in this invention are merely illustrative and not intended to limit the scope of the invention. Any obvious modifications or changes made to this invention do not depart from the spirit and scope of the invention.

[0025] In one embodiment, such as Figures 1-4 As shown, a transport vehicle for tunnel construction includes a platform frame 100, a material support plate 300, a material pushing component 600, and a rotating frame mechanism 400. The platform frame 100 has rail wheel components 200 that can move on a tunnel slide rail 700 on its side. The rotating frame mechanism 400 includes a lower rotating disk 410, a rotating frame body 420, and a height adjustment component. The lower rotating disk 410 is located on the upper surface of the platform frame 100 near one end. The rotating frame body 420 is located on the upper surface of the lower rotating disk 410, and the height adjustment component is located on the rotating frame body 420. One end of the material support plate 300 is slidably engaged with the rotating frame body 420 and connected to the height adjustment component. The height adjustment component can adjust the vertical position of the material support plate 300. The material support plate 300 has at least one clearance hole 310 along its length and is used to carry construction materials to be transported. The upper surface of the platform frame 100 is located near the lower rotating... A guide groove 110 is provided at the position of the disk 410, and the two ends of the guide groove 110 extend to the two sides of the lower rotating disk 410 respectively. At least one pusher rack 900 is provided on the side of the lower rotating disk 410. The pusher component 600 includes a pusher shaft 610, a lower movable support 620 and at least one pusher rod 640. The lower movable support 620 is disposed inside the guide groove 110 and can move inside the guide groove 110. The pusher shaft 610 is rotatably disposed on the lower rotating disk 410. The lower movable support 620 is provided with a pusher gear 630 that meshes with the pusher rack 900 at its top and end. The lower end of the pusher rod 640 is fixedly connected to the pusher shaft 610, and the top end of the pusher rod 640 passes through the corresponding clearance hole 310 and extends to the upper side of the support plate 300. When the lower movable support 620 moves along the guide groove 110, the pusher rod 640 can move relative to the support plate 300 along the clearance hole 310.

[0026] In this embodiment of the invention, in the initial state, the material support plate 300 is located on the upper side of the vehicle frame 100 and the pusher rod 640 is located at the end of the material support plate 300 near the rotating frame mechanism 400. The construction materials to be transferred are placed on the material support plate 300 from both sides of the vehicle frame 100. The transfer vehicle is pushed to move along the tunnel slide rail 700. When the transfer vehicle moves to the unloading position, the height adjustment component adjusts the height of the material support plate 300 to adapt to the height of the unloading point. The lower rotating disk 410 drives the rotating frame 420, the height adjustment component, the material support plate 300 and the pusher component 600 to rotate synchronously, and the material support plate 300 gradually rotates to the side of the vehicle frame 100. When the pusher component 600 rotates around the lower rotating disk 410, the lower movable support 620 moves to one end inside the guide groove 110. The lower movable support 620 can push the pusher shaft part 610 and the pusher rod 640 to push the material support shaft part 600 and the pusher rod 640 to push the material support shaft part 600. The material rod 640 moves relative to the material support plate 300 along the clearance hole 310. The material pushing shaft 610, which moves relative to the material support plate 300, can rotate through the meshing of the material pushing gear 630 and the material pushing rack 900, and the material pushing rod 640 rotates away from the rotating frame mechanism 400. Thus, when the material support plate 300 rotates towards the side of the car frame 100, the material pushing rod 640 can move and rotate relative to the material support plate 300 away from the rotating frame mechanism 400. The material pushing rod 640 can push the construction material on the material support plate 300 out from the end of the material support plate 300 away from the rotating frame mechanism 400, thereby completing automatic unloading, which is convenient and quick. When the material support plate 300 rotates back to the upper side of the car frame 100, the lower movable support 620 moves back to the middle position along the guide groove 110 and the material pushing rod 640 moves back to the initial position.

[0027] In one embodiment, such as Figures 1-4 As shown, the guide groove 110 includes an arc portion and two straight portions. The arc portion is located between the two straight portions, and the ends of the two straight portions away from the arc portion extend to the side of the vehicle frame 100. The center of the arc portion coincides with the center of the lower rotating disk 410, and the central angle of the arc portion is 30-45 degrees. In this embodiment of the invention, when the lower movable support 620 is within the arc portion and moves, the entire pushing component 600 will not move relative to the material support plate 300. When the lower movable support 620 is within the straight portion and moves... At that time, the pushing component 600 can move relative to the support plate 300 along the clearance hole 310; then when the support plate 300 just starts to rotate towards the side of the car frame 100, the pushing rod 640 will not push the construction material until the end of the support plate 300 away from the rotating frame mechanism 400 approaches the unloading point, the lower movable support 620 moves into the straight section and moves within the straight section. At this time, the pushing rod 640 starts to move and rotate along the clearance hole 310, so that the pushing rod 640 can push the construction material out of the support plate 300.

[0028] In one embodiment, such as Figures 1-4As shown, the rotating frame 420 has a handle 450 on its side and a control button on the handle 450. The height adjustment assembly includes an adjusting screw 430, a sliding beam 440, and an adjusting motor 460. The adjusting screw 430 is rotatably mounted on the rotating frame 420. The adjusting motor 460 is located on the top of the rotating frame 420, and its output end is connected to the top of the adjusting screw 430. The two ends of the sliding beam 440 are slidably engaged with the rotating frame 420, and the adjusting screw 430 spirally passes through the sliding beam 440. One end of the material support plate 300 is fixedly connected to one side of the sliding beam 440. In this embodiment of the invention, the adjusting motor 460 drives the adjusting screw 430 to rotate, and the rotating adjusting screw 430 causes the sliding beam 440 to move up or down along the rotating frame 420. The material support plate 300 moves up or down with the sliding beam 440, thereby adjusting the height of the construction material.

[0029] In one embodiment, such as Figures 1-4 As shown, the end of the pallet 300 away from the rotating frame mechanism 400 is an arc structure centered on the axis of the lower rotating disk 410. The end of the pallet frame 100 away from the rotating frame mechanism 400 is also provided with a supporting and blocking part. The supporting and blocking part includes a front stop 120 and a supporting part 130. The front stop 120 is fixed to the end of the pallet frame 100, and the end of the pallet 300 away from the rotating frame mechanism 400 contacts the arc side of the front stop 120. The supporting part 130 is fixed to the side wall of the front stop 120 facing the pallet 300. The support portion 130 is provided with a plurality of support balls 140 for rolling contact with the bottom surface of the material support plate 300; the upper end surface of the front stop portion 120 is higher than the upper surface of the material support plate 300; in the embodiment of the present invention, when the material support plate 300 is rotated to the upper side of the vehicle frame 100, the end of the material support plate 300 away from the rotating frame mechanism 400 is supported by the support portion 130 and the support balls 140, which can increase the load-bearing strength of the material support plate 300, and the front stop portion 120 can prevent construction materials from falling from the end of the material support plate 300 away from the rotating frame mechanism 400 during the transfer process.

[0030] In one embodiment, such as Figures 1-5As shown, protective frame mechanisms 500 are provided on both sides of the vehicle frame 100. Each protective frame mechanism 500 includes two parallel switching shafts 510 and two side blocking units located on either side of the vehicle frame 100. The two switching shafts 510 are rotatably mounted at the bottom of the vehicle frame 100, and the two side blocking units are connected to the ends of the two switching shafts 510. When the side blocking units are in a vertical state, a blocking switching assembly 800 is also provided at the bottom of the vehicle frame 100, and the blocking switching assembly 800 is connected to both switching shafts 510. The blocking switching assembly 800 is used to drive the switching shafts 510 to rotate and switch the two side blocking units between a vertical and a horizontal state. The top of the side blocking unit in the vertical state is above the upper surface of the material support plate 300. When the side blocking unit rotates to a horizontal state, the blocking... The switching component 800 can also restrict the movement of the track wheel component 200 on the tunnel slide rail 700. In this embodiment of the invention, when loading and unloading construction materials on the pallet 300, the blocking switching component 800 drives the switching shaft 510 to rotate and causes the side baffle unit to rotate to a horizontal state, thereby facilitating the loading and unloading of construction materials from the side of the pallet frame 100. At the same time, the blocking switching component 800 also restricts the movement of the track wheel component 200 on the tunnel slide rail 700, thereby ensuring the stability of the entire transfer vehicle during loading and unloading. After the construction materials are loaded and unloaded, the blocking switching component 800 drives the switching shaft 510 to rotate and the side baffle unit to rotate to a vertical state. The blocking switching component 800 no longer restricts the rolling of the track wheel component 200, and the side baffle unit can prevent the construction materials on the pallet 300 from falling from the side of the pallet 300.

[0031] In one embodiment, such as Figures 1-5As shown, the side stop unit includes two side rods 520 and multiple crossbars 540. One end of each of the two side rods 520 is fixedly connected to the ends of two switching shafts 510. Multiple crossbars 540 are arranged side-by-side between the two side rods 520. The two ends of the topmost crossbar 540 are rotatably connected to the ends of the two side rods 520. Each of the remaining crossbars 540 has a connecting sleeve 550 rotatably connected to its end. The connecting sleeve 550 slides on the corresponding side rod 520. Adjacent crossbars 540 are connected by multiple connecting ropes 560. In this embodiment, the two switching shafts 510 rotate synchronously. Thus, the two side members 520 rotate in one direction, and the multiple horizontal guard members 540 rotate in a horizontal state. Therefore, when the side members 520 are in a vertical state, the multiple horizontal guard members 540 can prevent construction materials from falling laterally. Since the connecting sleeve 550 can slide on the side members 520, the distance between the multiple horizontal guard members 540 increases when the side members 520 are in a vertical state, increasing the protective area. When the side members 520 gradually rotate to a horizontal state, the bottom horizontal guard member 540 is pushed from the side of the vehicle frame 100, and the distance between the multiple horizontal guard members 540 decreases, thereby reducing the height of the side guard assembly when it is in a horizontal state.

[0032] In one embodiment, such as Figures 1-5As shown, the switching shaft 510 is provided with a switching gear section 530. The track wheel component 200 includes a wheel axle 220, wheels 210, and a brake roller 230 provided on the wheel axle 220. The two ends of the wheel axle 220 are rotatably connected to the bottom of the car frame 100. There are two wheels 210, and the two wheels 210 are fixed at both ends of the wheel axle 220. The blocking switching assembly 800 includes a movable rod 810, a movable plate 840, and a switching cylinder 850. The top of the movable plate 840 is slidably connected to the bottom surface of the car frame 100. The switching cylinder 850 is fixed to one end of the car frame 100, and one end of the switching cylinder 850 is connected to the movable plate 840. One end of the movable rod 810 is connected to the movable plate 840, and an arc-shaped brake sleeve 82 is provided on the movable rod 810. The switching rack 830 meshes with the switching gear part 530. The arc-shaped brake sleeve 820 can be fitted onto the brake roller 230 and restrict the rotation of the brake roller 230. In this embodiment of the invention, the switching cylinder 850 drives the movable plate 840 to move at the bottom of the vehicle frame 100. The arc-shaped brake sleeve 820 and the movable rod 810 move with the movable plate 840. The arc-shaped brake sleeve 820 moves closer to or further away from the corresponding brake roller 230. The movable rod 810 rotates the switching shaft 510 by meshing with the switching rack 830 and the switching gear part 530. When the side guard unit is in a horizontal state, the arc-shaped brake sleeve 820 contacts the brake roller 230 and can restrict the rotation of the brake roller 230 through friction, thereby restricting the rotation of the wheel 210 and ensuring the stability of the entire transfer vehicle.

[0033] The above embodiment provides a transport vehicle for tunnel construction. In the initial state, the material support plate 300 is located on the upper side of the platform frame 100, and the pusher rod 640 is located at the end of the material support plate 300 near the rotating frame mechanism 400. The construction materials to be transported are placed on the material support plate 300 from both sides of the platform frame 100. The transport vehicle is pushed to move along the tunnel slide rail 700. When the transport vehicle moves to the unloading position, the height adjustment component adjusts the height of the material support plate 300 to adapt to the height of the unloading point. The lower rotating disk 410 drives the rotating frame 420, the height adjustment component, the material support plate 300, and the pusher component 600 to rotate synchronously, and the material support plate 300 gradually rotates to the side of the platform frame 100. When the pusher component 600 rotates around the lower rotating disk 410, the lower movable support 620 moves to one end inside the guide groove 110. The lower movable support 620 can push the pusher component to rotate. The shaft 610 and the push rod 640 move relative to the support plate 300 along the clearance hole 310. The push shaft 610, which moves relative to the support plate 300, can rotate through the meshing of the push gear 630 and the push rack 900, and the push rod 640 rotates away from the rotating frame mechanism 400. Thus, when the support plate 300 rotates towards the side of the car frame 100, the push rod 640 can move and rotate relative to the support plate 300 away from the rotating frame mechanism 400. The push rod 640 can push the construction material on the support plate 300 out from the end of the support plate 300 away from the rotating frame mechanism 400, thereby completing automatic unloading, which is convenient and quick. When the support plate 300 rotates back to the upper side of the car frame 100, the lower movable support 620 moves back to the middle position along the guide groove 110 and the push rod 640 moves back to the initial position.

[0034] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A transport vehicle for tunnel construction, comprising a platform frame, a material support plate, a material pushing component, and a rotating frame mechanism, wherein the side portion of the platform frame is provided with rail wheel components capable of moving on tunnel slide rails, characterized in that, The rotating frame mechanism includes a lower rotating disk, a rotating frame body, and a height adjustment component; The lower rotating disk is located on the upper surface of the vehicle frame near one end. The rotating frame is located on the upper surface of the lower rotating disk and the height adjustment component is located on the rotating frame. One end of the material support plate is slidably engaged with the rotating frame and connected to the height adjustment component. The height adjustment component can adjust the vertical position of the material support plate. The material support plate has at least one clearance hole along its length and is used to support construction materials to be transferred. A guide groove is provided on the upper part of the car frame near the lower rotary table, and the two ends of the guide groove extend to the two sides of the lower rotary table respectively. At least one pusher rack is provided on the side of the lower rotary table. The pushing component includes a pushing shaft, a lower movable support, and at least one pushing rod; The lower movable support is located inside the guide groove and can move inside the guide groove. The pusher shaft is rotatably located on the top of the lower movable support, and the end of the lower movable support is provided with a pusher gear that meshes with the pusher rack. The lower end of the pusher rod is fixedly connected to the pusher shaft, and the top end of the pusher rod passes through the corresponding clearance hole and extends to the upper side of the support plate. When the movable support moves along the guide groove, the push rod can move relative to the support plate along the clearance hole.

2. The tunnel construction transport vehicle according to claim 1, characterized in that, The guide groove includes an arc portion and two straight portions; The arc portion is located between two straight portions, and the ends of the two straight portions away from the arc portion extend to the side of the vehicle frame. The center of the arc portion coincides with the center of the lower rotating disk, and the central angle of the arc portion is 30-45 degrees.

3. The tunnel construction transport vehicle according to claim 1, characterized in that, The rotating frame is provided with a handle on its side and a control button is provided on the handle; The height adjustment assembly includes an adjustment screw, a sliding beam, and an adjustment motor; The adjusting screw is rotatably mounted on the rotating frame, and the adjusting motor is located at the top of the rotating frame with its output end connected to the top of the adjusting screw. The two ends of the sliding crossbeam are slidably engaged with the rotating frame, and the adjusting screw thread passes through the sliding crossbeam. One end of the material support plate is fixedly connected to one side of the sliding crossbeam.

4. The tunnel construction transport vehicle according to claim 1, characterized in that, The end of the material support plate away from the rotating frame mechanism is an arc structure centered on the axis of the rotating disk; The end of the vehicle frame away from the rotating frame mechanism is also provided with a supporting and blocking part; The supporting and blocking part includes a front stop and a supporting part; The front baffle is fixed to the end of the vehicle frame and the end of the material support plate away from the rotating frame mechanism contacts the side arc of the front baffle. The support part is fixed to the side wall of the front baffle facing the material support plate and is provided with a plurality of support balls for rolling contact with the bottom surface of the material support plate. The upper surface of the front baffle is higher than the upper surface of the material support plate.

5. The tunnel construction transport vehicle according to claim 1, characterized in that, The vehicle frame is equipped with a protective frame mechanism on both sides, and the protective frame mechanism includes two parallel switching shafts and two side baffle units located on both sides of the vehicle frame. Two switching shafts are rotatably mounted at the bottom of the vehicle frame, and both side guard units are connected to the ends of the two switching shafts. The bottom of the vehicle frame is also provided with a blocking switching assembly, and the blocking switching assembly is connected to two switching shafts. The blocking switching assembly is used to drive the switching shafts to rotate and switch the two side blocking units between a vertical state and a horizontal state. The top surface of the material support plate at the height of the side guard unit in a vertical position; When the side stop unit is rotated to a horizontal position, the blocking switching assembly can also restrict the movement of the track wheel components on the tunnel slide rail.

6. The tunnel construction transport vehicle according to claim 5, characterized in that, The side stop unit includes two side rods and multiple cross rods; One end of each of the two side rods is fixedly connected to the ends of the two switching shafts, and multiple crossbars are arranged side by side between the two side rods. The topmost horizontal bar is rotatably connected to the ends of the two side bars, and the ends of the remaining horizontal bars are rotatably connected to connecting sleeves. The connecting sleeve slides onto the corresponding side rod, and two adjacent horizontal stop rods are connected by multiple connecting ropes.

7. The tunnel construction transport vehicle according to claim 5, characterized in that, The switching shaft is provided with a switching gear section, and the track wheel component includes a wheel axle, a wheel, and a brake roller provided on the wheel axle. The two ends of the wheel axle are rotatably connected to the bottom of the vehicle frame, and there are two wheels, with the two wheels fixed at both ends of the wheel axle; The blocking switching assembly includes a movable rod, a movable plate, and a switching cylinder; The top of the movable plate is slidably connected to the bottom surface of the vehicle frame, and the switching cylinder is fixed to one end of the vehicle frame and one end of the switching cylinder is connected to the movable plate. One end of the movable rod is connected to the movable plate, and the movable rod is provided with an arc-shaped brake sleeve and a switching rack that meshes with the switching gear. The arc-shaped brake sleeve can be fitted onto the brake roller and restrict the rotation of the brake roller.

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