A soil-rock mixture roadbed filling mixing device installed on a transport truck

Abstract

The present invention discloses a soil-rock mixture roadbed filler mixing device mounted on a truck. The device comprises a mixing box, a mixing mechanism, a balancing mechanism, a drive motor, a hydraulic pump, and a control mechanism. The mixing box is connected to the discharge port at the rear end of the truck's hopper, the mixing mechanism is assembled within the mixing box, and the mixing mechanism is connected to the drive motor, which drives the mixing mechanism. The balancing mechanism is assembled on both sides of the mixing box, and the balancing mechanism controls the mixing box to always be in a horizontal state. The balancing mechanism is connected to the hydraulic pump, and the hydraulic pump controls the operation of the balancing mechanism. Advantageous effects include: hopper unloading and device mixing of the filler can be coordinated and controlled from within the driver's cab, achieving uniform mixing of coarse and fine particles in the filler, and improving the compaction effect and strength of the roadbed. This improves the strength and compaction degree of the roadbed, thereby enhancing the construction quality of the roadbed.

Description

Technical Field

[0001] The invention relates to a soil-rock mixture roadbed filling stirring device, in particular to a soil-rock mixture roadbed filling stirring device installed on a transport truck. Background Art

[0002] At present, excavation of existing soil-rock mixture slopes is inevitable in mountainous engineering construction, resulting in a large amount of soil and rock excavation. Combined with local transportation and economic constraints, the soil-rock mixture formed by these excavations can be converted on-site into road and railway subgrade filling materials, and has been widely used in existing engineering practices.

[0003] For mountain roads, uneven settlement and deformation and instability of the roadbed are the greatest and most significant hazards. Existing analysis of the main types of soil-rock mixture roadbed defects indicates that highway defects primarily occur in soil-rock mixture fill or accumulation areas, with uneven settlement and instability being the primary cause. In actual construction, soil-rock mixture fillers are often sourced from multiple slopes, and the shapes and sizes of coarse and fine particles within each slope vary, leading to inconsistent mixing between coarse and fine particles at different locations within the same roadbed. Even within the same slope, small, shallow soil slides and large, deep rock collapses often occur simultaneously or alternately during their formation, leading to significant stratification within the slope, a phenomenon exacerbated by subsequent weathering. Furthermore, during on-site paving, coarse particles possess greater potential energy, making them more likely to roll to the bottom and segregate. This means that when soil-rock mixture is used as roadbed filler, the degree of mixing between coarse and fine particles is not uniform, whether in the longitudinal direction of the roadbed or in the filling depth of the roadbed, and there are great differences, which seriously affects the construction quality.

[0004] Therefore, designing a mixing device capable of stirring soil-rock mixture fillers has become a pressing technical challenge in the current road construction and civil engineering fields. This present invention, proposed against this backdrop, aims to achieve uniform mixing of soil-rock mixtures before paving, thereby improving the quality and efficiency of road construction. By achieving uniform mixing of the soil-rock mixture roadbed filler, this reduces segregation and improves the uniformity and structural stability of the paved layer, thereby enhancing road construction quality. Summary of the Invention

[0005] The main purpose of the present invention is to achieve uniform mixing of soil-rock mixture roadbed filler, reduce the segregation of roadbed filler and improve the uniformity and structural stability of the paving layer, thereby improving the quality of road construction, and provide a soil-rock mixture roadbed filler mixing device installed on a transport truck.

[0006] The soil-rock mixture roadbed filler mixing device provided by the present invention, which is installed on a carrier truck, includes a mixing box, a mixing mechanism, a balancing mechanism, a drive motor, a hydraulic pump and a control mechanism, wherein the mixing box is connected to the discharge port at the rear end of the hopper of the carrier truck, the mixing mechanism is assembled in the mixing box, the mixing mechanism is connected to the drive motor, the drive motor drives the operation of the mixing mechanism, the balancing mechanism is assembled on both sides of the mixing box, the balancing mechanism controls the mixing box to always be in a horizontal state, the balancing mechanism is connected to the hydraulic pump, the hydraulic pump controls the operation of the balancing mechanism, the control mechanism is connected to the drive motor and the hydraulic pump, and the control mechanism controls the drive motor and the hydraulic pump to respectively drive the operation of the mixing mechanism and the balancing mechanism according to the input data of the connected sensor.

[0007] The stirring mechanism includes one or more stirring shafts, one or more stirring shafts are assembled in the inner cavity of the stirring box, one or more stirring shafts are connected to the output shaft of the driving motor, the driving motor drives one or more stirring shafts to rotate synchronously, and one or more stirring shafts are equipped with spiral blades.

[0008] The bottom of the mixing box is an open structure. Baffles are installed on both sides and the upper edge of the rear of the mixing box. The baffles are installed at a set angle. Push rods are installed on both sides of the connection between the front end of the mixing box and the outlet of the hopper of the carrier truck. The upper end of the push rod is pivotally connected to a rotating plate. The top of the push rod is connected to the rear baffle of the hopper of the carrier truck through the rotating plate. The lower end of the push rod is connected to a turntable, and the lower end of the push rod is connected to the upper edge of the front end of the mixing box through the turntable. The push rod is a telescopic structure. The action of the push rod can ensure that the rear baffle of the hopper of the carrier truck is always located above the inner cavity of the mixing box, thereby ensuring that the filler flowing out of the discharge port of the carrier truck enters the inner cavity of the mixing box for mixing.

[0009] The two sides of the mixing box are connected to the two sides of the hopper of the carrier truck through a connecting rod, and the front part of the connecting rod is inserted into several fixed clips assembled on both sides of the hopper of the carrier truck. The balancing mechanism assembled on both sides of the mixing box includes a first hydraulic rod and a second hydraulic rod, wherein the front end of the first hydraulic rod is connected to the rear end of the connecting rod, the rear end of the first hydraulic rod is pivoted on the side wall of the mixing box, the lower end of the second hydraulic rod is pivoted on the side wall of the mixing box, and the upper end of the second hydraulic rod is pivoted to the first hydraulic rod. The first hydraulic rod and the second hydraulic rod are both connected to the hydraulic pump and controlled by the hydraulic pump. Under the action of the first hydraulic rod and the second hydraulic rod, the mixing box can be kept in a horizontal state at all times.

[0010] The lower parts of the several fixing buckles are all provided with locking screws, and the insides of the several fixing buckles are all equipped with friction plates.

[0011] The hydraulic pump is connected to an oil tank, and the hydraulic oil used in the hydraulic pump is provided through the oil tank.

[0012] The sensors connected to the control mechanism include a level sensor and a flow sensor, wherein the level sensor is mounted on the outer wall of the mixing box, and the flow sensor is mounted inside the oil tank. The level sensor and the flow sensor can transmit the collected data to the control mechanism in real time. The control mechanism controls the operation of the hydraulic pump and the drive motor according to the input data of the level sensor and the flow sensor, thereby controlling the operation of the mixing mechanism and the balancing mechanism.

[0013] The control mechanism is composed of an analog-to-digital converter, a programmable logic controller, a display and a digital-to-analog converter. One side of the analog-to-digital converter is connected to the level sensor and the flow sensor, and the other side of the analog-to-digital converter is connected to the programmable logic controller. The data collected by the level sensor and the flow sensor can be received, processed and transmitted to the programmable logic controller in real time through the analog-to-digital converter. The programmable logic controller is also connected to the display and the digital-to-analog converter. The information processed by the programmable logic controller can be presented on the display. The digital-to-analog converter is connected to the drive motor and the hydraulic pump. The programmable logic controller edits and processes the received data signal and forms an instruction which is transmitted to the drive motor and the hydraulic pump through the digital-to-analog converter to control the operation of the hydraulic pump and the drive motor.

[0014] The above-mentioned drive motor, hydraulic pump, first hydraulic rod, second hydraulic rod, oil tank, level sensor, flow sensor, analog-to-digital converter, programmable logic controller, display and digital-to-analog converter are all assemblies of existing equipment, so the specific models and specifications are not repeated.

[0015] The working steps of the present invention are as follows:

[0016] Step 1: Align and weld several fixing clips with the bottom edge of the outer side of the hopper of the transport truck, three on each side, then insert the front part of the connecting rod into the fixing clips and lock them, and suspend the entire device at the discharge port at the rear end of the hopper of the transport truck;

[0017] Step 2: Install the control mechanism in the cab of the truck and connect the drive motor and hydraulic pump on the device to the control mechanism via data cables:

[0018] Step 3: In the cab, control the unloading arm of the carrier truck to prop up the hopper to unload. At this time, the hopper and the device assembled on the hopper are in a tilted state. Then operate the control mechanism in the cab to adjust the device to a horizontal state. When the level sensor sends a signal to the control mechanism, indicating that the device is level, the drive motor is turned on to drive the stirring mechanism to work.

[0019] Step 4: Open the rear door of the hopper of the transport truck. Due to its own weight, the rear door of the hopper has a certain inclination angle with the hopper. At this time, operate the push rod to prop up the rear door of the hopper so that the bottom height of the rear door is less than the height of the baffle of the mixing box, so that the rear door of the hopper and the mixing box form an enclosed space to prevent the rear door from shaking and the filler from leaking out and affecting the unloading;

[0020] Step 5: The filler in the hopper of the truck falls into the mixing box and leaks out from the bottom of the mixing box while being stirred, so as to achieve a uniform mixture of coarse and fine particles in the filler. To prevent the accumulation of filler under the mixing box, the truck moves forward slowly until all the filler in the hopper is dumped into the device for stirring;

[0021] Step 6. After all the stuffing in the hopper of the transport truck is dumped, retract the top rod, close the rear door of the hopper, control the unloading rod in the cab to level the hopper, and operate the control mechanism to adjust the device to be level.

[0022] Beneficial effects of the present invention:

[0023] The soil-rock mixture roadbed filler mixing device provided by the present invention, which is installed on a transport truck, can coordinate and control the hopper unloading and the device stirring the filler in the cab by connecting the device to the hopper of the transport truck, thereby uniformly mixing the coarse and fine particles in the filler and improving the compaction effect and strength of the roadbed. The stirring shaft in the mixing box of the device is used to drive the wide spiral blades to roll continuously, so that the coarse and fine particles in the filler discharged from the hopper are fully mixed and piled on the roadbed. Then, the paver spreads the filler with uniformly mixed coarse and fine particles evenly on the surface of the roadbed, so that the gaps between the particles are fully filled, thereby improving the strength and compaction degree of the roadbed and improving the construction quality of the roadbed. In addition, the device can be made into any size according to actual conditions, which is closer to engineering practice. The device is easy to prepare and install, safe to operate, and economical and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of the soil-rock mixture roadbed filler stirring device described in the present invention.

[0025] Figure 2 This is a schematic diagram of the connection structure of the mixing box of the present invention.

[0026] Figure 3 This is a schematic diagram of the internal structure of the mixing box of the present invention.

[0027] Figure 4 This is a schematic diagram of the push rod structure of the present invention.

[0028] Figure 5 Schematic diagram of the fixing buckle structure of the present invention.

[0029] Figure 6 This is a block diagram of the connection relationship of the control mechanism described in the present invention.

[0030] The annotations in the image above are as follows:

[0031] 1. Mixing box 2. Drive motor 3. Hydraulic pump 4. Control mechanism 5. Transport truck

[0032] 7. Stirring shaft 8. Spiral blade 9. Baffle 10. Push rod 11. Rotating plate

[0033] 12, turntable 13, connecting rod 14, fixing buckle 15, first hydraulic rod

[0034] 16. Second hydraulic rod 17. Locking screw 18. Friction plate 19. Fuel tank

[0035] 20. Level sensor 21. Flow sensor 22. Analog-to-digital converter

[0036] 23. Programmable logic controller 24. Display 25. Digital-to-analog converter. DETAILED DESCRIPTION

[0037] See also Figures 1 to 6 As shown:

[0038] The soil-rock mixture roadbed filler mixing device provided by the present invention, which is installed on a carrier truck, includes a mixing box 1, a mixing mechanism, a balancing mechanism, a drive motor 2, a hydraulic pump 3 and a control mechanism 4, wherein the mixing box 1 is connected to the discharge port at the rear end of the hopper of the carrier truck 5, the mixing mechanism is assembled in the mixing box 1, the mixing mechanism is connected to the drive motor 2, the drive motor 2 drives the operation of the mixing mechanism, the balancing mechanism is assembled on both sides of the mixing box 1, the balancing mechanism controls the mixing box 1 to always be in a horizontal state, the balancing mechanism is connected to the hydraulic pump 3, the hydraulic pump 3 controls the operation of the balancing mechanism, the control mechanism 4 is connected to the drive motor 2 and the hydraulic pump 3, and the control mechanism 4 controls the drive motor 2 and the hydraulic pump 3 to respectively drive the operation of the mixing mechanism and the balancing mechanism according to the input data of the connected sensors.

[0039] The stirring mechanism includes one or more stirring shafts 7, which are installed in the inner cavity of the stirring box 1. One or more stirring shafts 7 are connected to the output shaft of the drive motor 2. The drive motor 2 drives one or more stirring shafts 7 to rotate synchronously. One or more stirring shafts 7 are equipped with spiral blades 8.

[0040] The bottom of the mixing box 1 is an open structure. The upper edges of both sides and the rear of the mixing box 1 are equipped with baffles 9. The baffles 9 are tilted and assembled according to a set angle. The connection part between the front end of the mixing box 1 and the hopper outlet of the carrier truck 5 is equipped with push rods 10 on both sides. The upper end of the push rod 10 is pivotally connected to a rotating plate 11. The top of the push rod 10 is connected to the rear baffle of the hopper of the carrier truck 5 through the rotating plate 11. The lower end of the push rod 10 is connected to a turntable 12. The lower end of the push rod 10 is connected to the upper edge of the front end of the mixing box 1 through the turntable 12. The push rod 10 is a telescopic structure. Through the action of the push rod 10, it can be ensured that the rear baffle of the hopper of the carrier truck 5 is always located above the inner cavity of the mixing box 1, thereby ensuring that the filler flowing out of the discharge port of the carrier truck 5 enters the inner cavity of the mixing box 1 for mixing.

[0041] The two sides of the mixing box 1 are connected to the two sides of the hopper of the carrier truck 5 through a connecting rod 13. The front part of the connecting rod 13 is inserted into several fixed clips 14 assembled on both sides of the hopper of the carrier truck 5. The balancing mechanism assembled on both sides of the mixing box 1 includes a first hydraulic rod 15 and a second hydraulic rod 16, wherein the front end of the first hydraulic rod 15 is connected to the rear end of the connecting rod 13, the rear end of the first hydraulic rod 15 is pivoted on the side wall of the mixing box 1, the lower end of the second hydraulic rod 16 is pivoted on the side wall of the mixing box 1, and the upper end of the second hydraulic rod 16 is pivoted to the first hydraulic rod 15. The first hydraulic rod 15 and the second hydraulic rod 16 are both connected to the hydraulic pump 3 and controlled by the hydraulic pump 3. Under the action of the first hydraulic rod 15 and the second hydraulic rod 16, the mixing box 1 can be kept in a horizontal state at all times.

[0042] A locking screw 17 is provided at the bottom of each of the fixing buckles 14 , and a friction plate 18 is assembled inside each of the fixing buckles 14 .

[0043] The hydraulic pump 3 is connected to an oil tank 19 , and the hydraulic oil used in the hydraulic pump 3 is provided through the oil tank 19 .

[0044] The sensors connected to the control mechanism 4 include a level sensor 20 and a flow sensor 21, wherein the level sensor 20 is mounted on the outer wall of the mixing box 1, and the flow sensor 21 is mounted in the oil tank 19. The level sensor 20 and the flow sensor 21 can transmit the collected data to the control mechanism 4 in real time. The control mechanism 4 controls the operation of the hydraulic pump 3 and the drive motor 2 according to the input data of the level sensor 20 and the flow sensor 21, thereby controlling the operation of the mixing mechanism and the balancing mechanism.

[0045] The control mechanism 4 is composed of an analog-to-digital converter 22, a programmable logic controller 23, a display 24 and a digital-to-analog converter 25, wherein one side of the analog-to-digital converter 22 is connected to the level sensor 20 and the flow sensor 21, and the other side of the analog-to-digital converter 22 is connected to the programmable logic controller 23. The data collected by the level sensor 20 and the flow sensor 21 can be received and processed in real time through the analog-to-digital converter 22 and transmitted to the programmable logic controller 23. The programmable logic controller 23 is also connected to the display 24 and the digital-to-analog converter 25. The information processed by the programmable logic controller 23 can be presented on the display 24. The digital-to-analog converter 25 is connected to the drive motor 2 and the hydraulic pump 3. The programmable logic controller 23 edits and processes the received data signal and forms an instruction which is transmitted to the drive motor 2 and the hydraulic pump 3 through the digital-to-analog converter 25 to control the operation of the hydraulic pump 3 and the drive motor 2.

[0046] The above-mentioned drive motor 2, hydraulic pump 3, first hydraulic rod 15, second hydraulic rod 16, oil tank 19, level sensor 20, flow sensor 21, analog-to-digital converter 22, programmable logic controller 23, display 24 and digital-to-analog converter 25 are all assemblies of existing equipment, so the specific models and specifications are not repeated.

[0047] The working steps of the present invention are as follows:

[0048] Step 1: Align and weld several fixing buckles 14 with the bottom edge of the outer side of the hopper of the delivery truck 5, three on each side, then insert the front part of the connecting rod 13 into the fixing buckles 14 and lock them, and suspend the entire device at the discharge port at the rear end of the hopper of the delivery truck 5;

[0049] Step 2: Install the control mechanism 4 in the cab of the transport truck 5, and connect the drive motor 2 and hydraulic pump 3 on the device to the control mechanism 4 via data cables:

[0050] Step 3: In the cab, control the unloading rod of the carrier truck 5 to prop up the hopper to unload. At this time, the hopper and the device mounted on the hopper are in a tilted state. Then operate the control mechanism 4 in the cab to adjust the device to a horizontal state. When the level sensor 20 sends a signal to the control mechanism 4, indicating that the device is level, the drive motor 2 is turned on to drive the stirring mechanism to work.

[0051] Step 4: Open the rear door of the hopper of the transport truck 5. Due to its own weight, the rear door of the hopper has a certain inclination angle with the hopper. At this time, operate the push rod 10 to prop up the rear door of the hopper so that the bottom height of the rear door is less than the height of the baffle of the mixing box 1, so that the rear door of the hopper and the mixing box 1 form an enclosed space to prevent the rear door from shaking and the filler from leaking out and affecting the unloading;

[0052] Step 5: The filler in the hopper of the truck 5 falls into the mixing box 1 and leaks out from the bottom of the mixing box 1 while being stirred, so as to achieve a uniform mixture of coarse and fine particles in the filler. To prevent the accumulation of filler under the mixing box 1, the truck moves forward slowly until all the filler in the hopper is dumped into the device for stirring;

[0053] Step 6: After all the stuffing in the hopper of the transport truck 5 is dumped, the top rod 10 is retracted, the rear door of the hopper is closed, the unloading rod is controlled in the cab to level the hopper, and the control mechanism is operated to adjust the device to be level.

Claims

1. A soil-rock mixture roadbed filler mixing device mounted on a transport truck, comprising a mixing box, a mixing mechanism, a balancing mechanism, a drive motor, a hydraulic pump, and a control mechanism, wherein the mixing box is connected to the discharge port at the rear end of the hopper of the transport truck, the mixing mechanism is assembled in the mixing box, the mixing mechanism is connected to the drive motor, the drive motor drives the mixing mechanism, the balancing mechanism is assembled on both sides of the mixing box, the balancing mechanism controls the mixing box to always be in a horizontal state, the balancing mechanism is connected to the hydraulic pump, the hydraulic pump controls the operation of the balancing mechanism, the control mechanism is connected to the drive motor and the hydraulic pump, and the control mechanism controls the drive motor and the hydraulic pump to respectively drive the mixing mechanism and the balancing mechanism according to input data from connected sensors, characterized in that: The bottom of the mixing box is an open structure, and baffles are installed on both sides and the upper edge of the rear of the mixing box. The baffles are installed at a tilted angle according to a set angle. Push rods are installed on both sides of the connection between the front end of the mixing box and the outlet of the hopper of the carrier truck. The upper end of the push rod is pivotally connected to a rotating plate, and the top of the push rod is connected to the rear baffle of the hopper of the carrier truck through the rotating plate. The lower end of the push rod is connected to a turntable, and the lower end of the push rod is connected to the upper edge of the front end of the mixing box through the turntable. The push rod is a telescopic structure, and the action of the push rod can ensure that the rear baffle of the hopper of the carrier truck is always located above the inner cavity of the mixing box, thereby ensuring that the filler flowing out of the discharge port of the carrier truck enters the inner cavity of the mixing box for mixing. ; The two sides of the mixing box are connected to the two sides of the hopper of the carrier truck through connecting rods, and the front part of the connecting rods is inserted into several fixed clips assembled on both sides of the hopper of the carrier truck. The balancing mechanism assembled on both sides of the mixing box includes a first hydraulic rod and a second hydraulic rod, wherein the front end of the first hydraulic rod is connected to the rear end of the connecting rod, the rear end of the first hydraulic rod is pivoted on the side wall of the mixing box, the lower end of the second hydraulic rod is pivoted on the side wall of the mixing box, and the upper end of the second hydraulic rod is pivoted to the first hydraulic rod. The first hydraulic rod and the second hydraulic rod are both connected to the hydraulic pump and controlled by the hydraulic pump. Under the action of the first hydraulic rod and the second hydraulic rod, the mixing box can always be kept in a horizontal state.

2. The soil-rock mixture roadbed filling mixing device mounted on a transport truck according to claim 1, characterized in that: The stirring mechanism includes one or more stirring shafts, one or more stirring shafts are assembled in the inner cavity of the stirring box, one or more stirring shafts are connected to the output shaft of the driving motor, the driving motor drives one or more stirring shafts to rotate synchronously, and one or more stirring shafts are equipped with spiral blades.

3. The soil-rock mixture roadbed filling mixing device mounted on a transport truck according to claim 1, characterized in that: The lower parts of the several fixing buckles are all provided with locking screws, and the insides of the several fixing buckles are all equipped with friction plates.

4. The soil-rock mixture roadbed filling stirring device mounted on a transport truck according to claim 1, characterized in that: The hydraulic pump is connected to an oil tank, and the hydraulic oil used in the hydraulic pump is provided through the oil tank.

5. The soil-rock mixture roadbed filling stirring device mounted on a transport truck according to claim 1, characterized in that: The sensors connected to the control mechanism include a level sensor and a flow sensor, wherein the level sensor is mounted on the outer wall of the mixing box, and the flow sensor is mounted in the oil tank. The level sensor and the flow sensor can transmit the collected data to the control mechanism in real time. The control mechanism controls the operation of the hydraulic pump and the drive motor according to the input data of the level sensor and the flow sensor, thereby controlling the operation of the mixing mechanism and the balancing mechanism.

6. The soil-rock mixture roadbed filling stirring device mounted on a transport truck according to claim 1 or 5, characterized in that: The control mechanism is composed of an analog-to-digital converter, a programmable logic controller, a display and a digital-to-analog converter, wherein one side of the analog-to-digital converter is connected to the level sensor and the flow sensor, and the other side of the analog-to-digital converter is connected to the programmable logic controller. The data collected by the level sensor and the flow sensor can be received, processed and transmitted to the programmable logic controller in real time through the analog-to-digital converter. The programmable logic controller is also connected to the display and the digital-to-analog converter. The information processed by the programmable logic controller can be presented on the display. The digital-to-analog converter is connected to the drive motor and the hydraulic pump. The programmable logic controller edits and processes the received data signal and forms an instruction, which is transmitted to the drive motor and the hydraulic pump through the digital-to-analog converter to control the operation of the hydraulic pump and the drive motor.

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