Automatic unloading mechanism of asphalt pavement crack treatment maintenance vehicle

Abstract

This utility model discloses an automatic unloading mechanism for an asphalt pavement crack treatment and maintenance vehicle, relating to the field of asphalt pavement maintenance technology. It includes a chain conveyor mounted on the maintenance vehicle and a hydraulic motor and reducer that drive the chain conveyor. The chain conveyor has an outer baffle and an inner baffle on its two upper edges. The discharge gate of the maintenance vehicle's frying pot is located on the upper side of the upstream section of the chain conveyor, and the inner baffle is located downstream of the discharge gate of the frying pot. An inclined discharge chute is provided on the outer side of the downstream end of the chain conveyor. This utility model uses a chain conveyor to transport the asphalt mixture generated in the frying pot. The chain conveyor has stable performance, strong load-bearing capacity, and ensures stable unloading. The rear discharge chute can be aligned with the potholes that need repair, directly unloading the asphalt mixture into the potholes, reducing manual secondary unloading and saving time and labor. Changing the direction of the frying pot's discharge movement so that the discharge is behind the maintenance vehicle only occupies one lane during construction, facilitating operation.

Description

Technical Field

[0001] This utility model relates to the field of asphalt pavement maintenance technology, and in particular to an automatic unloading mechanism for an asphalt pavement crack treatment and maintenance vehicle. Background Technology

[0002] Most asphalt hot recycling pavement maintenance vehicles have their unloading devices installed on the side or rear of the frying pan, adding a ramp for unloading. During use, the unloading port cannot be effectively aligned with the potholes requiring repair, sometimes requiring manual assistance to transport the material to the pothole before repair work can be carried out. Side unloading is generally located on the side of the underframe beam. Due to limited vehicle space, operation is not very convenient, as the unloading port is just a ramp, relying entirely on the slope and the material's own weight for descent. This can lead to adhesion during unloading, resulting in uneven material flow. If the unloading port is on the side, it requires occupying two lanes during construction, affecting the operation of other vehicles. Utility Model Content

[0003] The purpose of this utility model is to solve at least one of the problems in the prior art mentioned above, and to provide an automatic unloading mechanism for an asphalt pavement crack treatment and maintenance vehicle.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] An automatic unloading mechanism for an asphalt pavement crack treatment and maintenance vehicle includes a chain conveyor mounted on the maintenance vehicle and a hydraulic motor and reducer for driving the chain conveyor. The chain conveyor has an outer baffle and an inner baffle on its upper sides at both edges. The discharge gate of the maintenance vehicle's frying pan is located on the upper side of the upstream section of the chain conveyor, and the inner baffle is located downstream of the discharge gate of the frying pan. An inclined discharge chute is provided on the outer side of the downstream end of the chain conveyor.

[0006] Furthermore, an inclined plate is provided between the downstream end of the chain conveyor and the upper end of the discharge chute, and the inclined plate is connected between the outer baffle and the inner baffle.

[0007] Furthermore, a pull rod is connected between the outer baffle and the inner baffle, and a hook that is attached to the pull rod is connected to the upper end of the discharge chute.

[0008] Furthermore, a fixed pipe connects the outer baffle to the chain conveyor.

[0009] Furthermore, the upstream end of the inner baffle has a bent portion that bends toward the feeding gate of the frying pot, and the bent portion is connected to the frying pot.

[0010] Furthermore, the chain conveyor is connected to the maintenance vehicle by bolts.

[0011] Furthermore, the chain conveyor includes two side plates, a support plate connected between the two side plates, two annular chains, a plurality of chain plates connected between the two chains, sprockets supporting the inner side of the chain ends, and axles supporting the sprockets, with the support plate lining the underside of the upper chain plates.

[0012] Furthermore, the chain conveyor is provided with several bearing seats for supporting wheel shafts; a tensioning component for tensioning the chain is provided at the end of the chain conveyor away from the discharge chute.

[0013] Furthermore, the tensioning assembly includes a lead screw and a tensioning bolt that act on the bearing seats at both ends of the wheel axle respectively; the side plate is provided with a sleeve through which the lead screw passes, one end of the lead screw is connected to the bearing seat, and the other end is provided with a tensioning nut on the outside; the side plate is provided with a tensioning connecting plate, and the tensioning bolt is threadedly connected to the tensioning connecting plate and abuts against the bearing seat.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This utility model is installed on the left rear side of the roasting kettle, corresponding to the discharge port, and placed inside the outer seal. The transmission of the unloading mechanism is controlled by a hydraulic motor, and a chain conveyor is used for conveying. The chain has stable performance, strong load-bearing capacity, and ensures the stability of unloading. It is used for unloading the asphalt mixture generated by the roasting kettle. The rear discharge chute can be aligned with the potholes that need to be repaired, and the asphalt mixture can be directly unloaded into the potholes, reducing the need for secondary unloading by humans, saving time and labor. The unloading chute is detachable. The entire unloading mechanism is installed inside the outer seal, maintaining the integrity of the vehicle and making it aesthetically pleasing. It changes the direction of material movement of the roasting kettle, so that the discharge is behind the maintenance vehicle, occupying only one lane during construction, which is convenient for operation. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a schematic diagram of the first side tensioning structure of this utility model.

[0018] Figure 3 This is a side view of the structure of this utility model.

[0019] Figure 4 This is a top view of the structure of this utility model.

[0020] Figure 5 This is a schematic diagram of the second-side tensioning structure of this utility model.

[0021] Figure 6 This is a schematic diagram of the installation position of this utility model.

[0022] In the diagram: 1. Hydraulic motor; 2. Reducer; 3. Chain conveyor; 4. Inner baffle; 5. Outer baffle; 6. Discharge chute; 7. Inclined plate; 8. Tie rod; 9. Hook; 10. Fixing pipe; 11. Mounting connecting plate; 12. Lead screw; 13. Sleeve; 14. Tensioning nut; 15. Tensioning connecting plate; 16. Tensioning bolt; 17. Shaft seat;

[0023] 31. Side plate; 32. Support plate; 33. Chain; 34. Chain plate; 35. Sprocket; 36. Axle; 41. Bend. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0025] A specific embodiment of the automatic unloading mechanism for the asphalt pavement crack treatment and maintenance vehicle provided by this utility model:

[0026] Please see Figure 1-6 The automatic unloading mechanism of the asphalt pavement crack treatment and maintenance vehicle includes a chain conveyor 3 installed on the maintenance vehicle, a hydraulic motor 1 and a reducer 2 that drive the chain conveyor 3 to operate. The reducer 2 is installed on the chain conveyor 3, and the hydraulic motor 1 is connected to the reducer 2 and drives the reducer 2 to work, thereby making the chain conveyor 3 operate.

[0027] In this embodiment, the chain conveyor 3 includes two side plates 31, a support plate 32 connected between the two side plates 31, two annular chains 33, a plurality of chain plates 34 connected between the two chains 33, a sprocket 35 supporting the inner side of the end of the chain 33, and a wheel axle 36 supporting the sprocket 35. The support plate 32 is placed under the upper chain plate 34. The support plate 32 has a plurality of through holes evenly distributed on it to reduce weight. The support plate 32 supports the upper chain plate 34, so that the upper chain plate 34 can stably convey the asphalt mixture output from the frying pot.

[0028] Two chains 33 are arranged in parallel, and two axles 36 are arranged in parallel on the inner sides of both ends of the chains 33; there are four sprockets 35, with two sprockets 35 on each axle 36. The chains 33 and chain plates 34 are located between two side plates 31, and the axles 36 pass through the side plates 31. The output shaft of the reducer 2 is connected to one axle 36, causing the axle 36 and sprockets 35 to rotate, which in turn causes the chains 33 and chain plates 34 to rotate.

[0029] The chain conveyor 3 has an outer baffle 5 and an inner baffle 4 on its upper sides at both edges. The discharge gate of the curing vehicle's frying tank is located on the upper side of the upstream section of the chain conveyor 3, and the inner baffle 4 is located on the downstream side of the discharge gate of the frying tank. The length of the inner baffle 4 is less than that of the outer baffle 5. The outer baffle 5 covers the entire chain conveyor 3 and is mainly used to prevent asphalt mixture from overflowing during unloading. Specifically, the outer baffle 5 and the inner baffle 4 are located on the upper sides of both ends of the upper chain plate 34. The inner baffle 4 is located on the upper side of the downstream section of the chain conveyor 3.

[0030] A fixed pipe 10 is connected between the outer baffle 5 and the side plate 31 on the outside of the chain conveyor 3. The fixed pipe 10 is a bent Z-shaped tubular structure. The fixed pipe 10 is connected to the outer baffle 5 and the side plate 31 by bolts to support the outer baffle 5.

[0031] The upstream end of the inner baffle 4 has a bent portion 41 that bends towards the discharge gate of the frying pot, and the bent portion 41 is connected to the frying pot by bolts. The connection between the bent portion 41 and the frying pot is located on the rear side of the discharge gate. The inner baffle 4 is supported by the bolt connection between the bent portion 41 and the frying pot.

[0032] An inclined discharge chute 6 is provided on the outer side of the downstream end of the chain conveyor 3. An inclined plate 7 is provided between the downstream end of the chain conveyor 3 and the upper end of the discharge chute 6. The inclined plate 7 connects the lower ends of the outer baffle 5 and the inner baffle 4. The inclined plate 7 has the same inclination as the discharge chute 6 and fits against the lower end face of the upper wall of the discharge chute 6. A reinforcing strip is provided on the lower side of the inclined plate 7. The reinforcing strip has a V-shaped cross-section to prevent deformation of the inclined plate 7. The inclined plate 7 fills the gap between the discharge chute 6 and the chain conveyor 3, reducing the overflow of asphalt mixture.

[0033] A pull rod 8 connects the outer baffle 5 and the inner baffle 4. A hook 9, which engages with the pull rod 8, is connected to the upper end of the discharge chute 6. Bolts are connected to both ends of the pull rod 8, passing through the outer baffle 5 and the inner baffle 4, thus clamping the outer baffle 5 and the inner baffle 4 at both ends of the pull rod 8. The hook 9 is bolted to the discharge chute 6. When the discharge chute 6 needs to unload, the hook is attached, aligned with the pit to be repaired. When not in use, the discharge chute 6 can be removed and stored.

[0034] In this embodiment, a tie rod 8 is also provided on the inner side of the top of the discharge chute 6. Similarly, bolts are connected to both ends of the tie rod 8. The bolts pass through the two side walls of the discharge chute 6, so that the two side walls are clamped at both ends of the tie rod 8, which can improve the stability of the structure of the discharge chute 6 and avoid deformation.

[0035] The chain conveyor 3 is connected to the maintenance vehicle by bolts. The two side plates 31 are connected to the end near the discharge chute 6 by mounting connection plates 11. The mounting connection plates 11 are connected to the maintenance vehicle by bolts. After the unloading mechanism is installed as a whole, the chain conveyor 3 is fixed to the lower side of the discharge gate of the frying kettle by the mounting connection plates 11. The asphalt mixture discharged from the frying kettle falls to the upper side of the upstream section of the chain conveyor 3.

[0036] Several bolts are threaded through the end of the outer baffle 5 away from the discharge chute 6 to connect it to the maintenance vehicle, thereby improving the stability of the outer baffle 5. Bolts are also threaded through the end of the outer side plate 31 of the chain conveyor 3 away from the discharge chute 6 to connect it to the maintenance vehicle, thereby improving the stability of the chain conveyor 3 installation.

[0037] The chain conveyor 3 is provided with several bearing seats 17 supporting the wheel axles 36; there are four bearing seats 17, which are located at both ends of two wheel axles 36 respectively. The bearing seats 17 at both ends of the wheel axles 36 near the discharge chute 6 are fixed, and bearings supporting the rotation of the wheel axle 36 are provided on the bearing seats 17 at these ends.

[0038] The chain conveyor 3 has a tensioning assembly at the end away from the discharge chute 6 to tension the chain 33. The tensioning assembly includes a lead screw 12 and a tensioning bolt 16 that act on the bearing seats 17 at both ends of the wheel axle 36. The lead screw 12 is located outside the outer side plate 31 of the chain conveyor 3. The outer side plate 31 has a sleeve 13 through which the lead screw 12 passes. One end of the lead screw 12 is connected to the outer bearing seat 17, and the other end has a tensioning nut 14 on its outer side. By rotating the tensioning nut 14, the lead screw 12 can pull the bearing seat 17, thereby tensioning the outer chain 33.

[0039] The tensioning bolt 16 is located inside the inner side plate 31 of the chain conveyor 3. The inner side plate 31 is provided with a tensioning connecting plate 15, which is L-shaped. The tensioning connecting plate 15 is connected to the inner side plate 31 by bolts and to the frying pot by bolts, which further improves the stability of the chain conveyor 3. The tensioning bolt 16 is connected to the tensioning connecting plate 15 by threads and abuts against the inner shaft seat 17. By rotating the tensioning bolt 16, the shaft seat 17 can be moved, thereby tensioning the inner chain 33.

[0040] Two bearing seats 17 at the end of the tensioning assembly move outward from the side plate 31 of the chain conveyor 3. The aforementioned reducer 2 is mounted on the bearing seat 17 on the outer side plate 31. The outer bearing seat 17 is horizontally movable along the side plate 31. A lug is connected to the bearing seat 17, and a pin is connected to the end of the lug. The outer side plate 31 has a slotted hole for the pin to move. The outer side plate 31 has a through hole for the wheel axle 36 to pass through, and the inner diameter of the through hole is larger than the outer diameter of the wheel axle 36. Similarly, the inner bearing seat 17 moves outward from the inner side plate 31. Rotating the tensioning bolt 16 can tighten the bearing seat 17. The inner bearing seat 17 has a bearing that supports the rotation of the wheel axle 36.

[0041] In this embodiment, the discharge gate of the roasting kettle is opened and closed by a hydraulic cylinder. Working process: Open the rear door of the maintenance vehicle, attach the discharge chute 6, and complete the preparatory work. When the asphalt mixture in the frying kettle is ready for discharge, rotate the discharge gate knob to open it. Since the hydraulic motor 1 of the discharge mechanism and the hydraulic cylinder of the discharge gate drive mechanism of the frying kettle are hydraulically linked, the discharge mechanism and the discharge gate start simultaneously when the knob is turned. The discharge gate opens gradually. Driven by the hydraulic motor 1, the discharge mechanism drives the chain 33 and chain plate 34 to make a circular motion. When the discharge gate is open, you can observe the size of the opening of the discharge gate as needed. When you feel that the amount of asphalt mixture coming out of the discharge port is sufficient, release the button. As long as the button is not closed, the discharge gate will always be in the open state, and the chain plate conveyor 3 of the discharge mechanism will also keep rotating. At this time, the material discharged from the frying kettle falls onto the chain plate conveyor 3. The circular motion of the chain plate conveyor 3 transports the asphalt mixture to the discharge chute 6 at the rear, and then into the pit that needs to be repaired. When there is enough asphalt mixture in the pothole, rotate the discharge gate knob to close the discharge gate. Release the knob once the discharge gate is fully closed. The asphalt mixture will no longer be discharged, but the discharge mechanism will operate for a 30-second delay to unload all remaining material from the chain conveyor 3. After the delay, the discharge mechanism will automatically stop, completing the unloading process. If another pothole needs repair, move the vehicle to the next repair point and repeat the above steps.

[0042] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An automatic unloading mechanism for an asphalt pavement crack treatment and maintenance vehicle, characterized in that, It includes a chain conveyor (3) installed on the maintenance vehicle and a hydraulic motor (1) and a reducer (2) for driving the chain conveyor (3); the chain conveyor (3) is provided with an outer baffle (5) and an inner baffle (4) on the upper side of its two edges respectively; the discharge gate of the frying pot of the maintenance vehicle is located on the upper side of the upstream section of the chain conveyor (3), and the inner baffle (4) is located on the downstream side of the discharge gate of the frying pot; an inclined discharge chute (6) is provided on the outer side of the downstream end of the chain conveyor (3).

2. The automatic unloading mechanism for the asphalt pavement crack treatment and maintenance vehicle according to claim 1, characterized in that, An inclined plate (7) is provided between the downstream end of the chain conveyor (3) and the upper end of the discharge chute (6), and the inclined plate (7) is connected between the outer baffle (5) and the inner baffle (4).

3. The automatic unloading mechanism for the asphalt pavement crack treatment and maintenance vehicle according to claim 1, characterized in that, A pull rod (8) is connected between the outer baffle (5) and the inner baffle (4), and a hook (9) is connected to the upper end of the discharge chute (6) to be hooked to the pull rod (8).

4. The automatic unloading mechanism for the asphalt pavement crack treatment and maintenance vehicle according to claim 1, characterized in that, A fixed pipe (10) is connected between the outer baffle (5) and the chain conveyor (3).

5. The automatic unloading mechanism for the asphalt pavement crack treatment and maintenance vehicle according to claim 1, characterized in that, The upstream end of the inner baffle (4) has a bent part (41) that bends toward the feeding gate of the frying pot, and the bent part (41) is connected to the frying pot.

6. The automatic unloading mechanism for the asphalt pavement crack treatment and maintenance vehicle according to claim 1, characterized in that, The chain conveyor (3) is bolted to the maintenance vehicle.

7. The automatic unloading mechanism for the asphalt pavement crack treatment and maintenance vehicle according to claim 1, characterized in that, The chain conveyor (3) includes two side plates (31), a support plate (32) connected between the two side plates (31), two annular chains (33), a number of chain plates (34) connected between the two chains (33), a sprocket (35) supporting the inner side of the end of the chain (33) and a wheel axle (36) supporting the sprocket (35). The support plate (32) is placed under the upper chain plate (34).

8. The automatic unloading mechanism for the asphalt pavement crack treatment and maintenance vehicle according to claim 7, characterized in that, The chain conveyor (3) is provided with a number of bearing seats (17) supporting the wheel shafts (36); the chain conveyor (3) is provided with a tensioning component to tension the chain (33) at one end away from the discharge chute (6).

9. The automatic unloading mechanism for the asphalt pavement crack treatment and maintenance vehicle according to claim 8, characterized in that, The tensioning assembly includes a lead screw (12) and a tensioning bolt (16) acting on the bearing seats (17) at both ends of the wheel axle (36); a sleeve (13) is provided on the side plate (31) for the lead screw (12) to pass through, one end of the lead screw (12) is connected to the bearing seat (17), and a tensioning nut (14) is provided on the outer side of the other end; a tensioning connecting plate (15) is provided on the side plate (31), and the tensioning bolt (16) is threadedly connected to the tensioning connecting plate (15) and abuts against the bearing seat (17).

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