Road maintenance vehicle

Abstract

The utility model discloses a road maintenance vehicle which comprises a vehicle body, a heat preservation material box is installed on the vehicle body and used for being filled with high-temperature liquid asphalt materials, and the lower end of the tail of the heat preservation material box penetrates through a chassis of the vehicle body and extends downwards to be provided with a discharging opening. The batching assembly is installed at the tail end of the bottom of the vehicle body and comprises a batching pipe, a feeding pipe and a discharging pipe are arranged at the two ends of the batching pipe in a penetrating mode, the feeding pipe corresponds to the discharging opening and is used for receiving asphalt materials output by the discharging opening, and a paving unit is arranged at the position of the discharging pipe and is used for paving the asphalt materials output by the discharging opening. The paving and leveling device is used for paving and leveling the output asphalt material body; the posture adjusting assembly is arranged at the tail of the vehicle body, connected with the batching assembly and used for adjusting the height and the angle position of a discharging pipe of the batching assembly.

Description

Technical Field

[0001] This utility model relates to the field of road maintenance equipment technology, specifically to a road maintenance vehicle. Background Technology

[0002] With rapid regional economic development, highway traffic volume has surged, and the passage of large, overloaded vehicles and extreme weather have led to frequent road surface defects (such as potholes and cracks). Traditional road repair processes generally use small mobile asphalt mixing plants to produce asphalt mixtures on-site, which has significant technical shortcomings. In the paving stage, manual shoveling and rakeing are relied upon, which is inefficient, results in poor flatness, and easily leads to segregation at joints.

[0003] Therefore, it is necessary to provide a road maintenance vehicle to solve the problems mentioned in the background section above. Utility Model Content

[0004] To achieve the above objectives, this utility model provides the following technical solution: a road maintenance vehicle, comprising:

[0005] The vehicle body is equipped with an insulated material box for filling high-temperature liquid asphalt material. The lower end of the insulated material box extends downward through the vehicle body frame and has a discharge port.

[0006] A batching assembly is installed at the rear end of the vehicle body. The batching assembly includes a batching pipe, with an inlet pipe and an outlet pipe respectively connected to the two ends of the batching pipe. The inlet pipe is corresponding to the discharge port and is used to receive the asphalt material output from the discharge port. A paving unit is provided at the outlet pipe for paving and leveling the output asphalt material.

[0007] An attitude adjustment component is located at the rear of the vehicle body and connected to the dispensing component, used to adjust the height and angle of the dispensing component's discharge pipe.

[0008] Preferably, a feeding hose is installed at the feeding port, and the feeding hose extends into the feeding pipe to adapt to the feeding of the feeding component under different postures.

[0009] Preferably, the dispensing assembly further includes a long shaft coaxially rotatably disposed inside the dispensing tube, with helical blades adapted to fit the inner wall of the dispensing tube on the shaft body, and a motor installed at one end of the dispensing tube near the vehicle body, the long shaft being coaxially connected to the output end of the motor for driving the long shaft to rotate.

[0010] Preferably, the top of the dispensing pipe has several maintenance windows along its extension direction, and a maintenance cover is rotatably provided on one side of the maintenance window. When the maintenance cover is closed, its bottom smoothly transitions with the inner wall of the dispensing pipe.

[0011] Preferably, the paving unit includes: a U-shaped plate, wherein several U-shaped plates are arranged in ascending order of size and are slidably nested together in sequence, the innermost U-shaped plate has its inner wall fixedly connected to the outer wall of the discharge pipe, the opening of the U-shaped plate faces the rear of the vehicle body, and the two sides of the opening end of each U-shaped plate are hinged to the two sides of the discharge pipe through hinge shafts, the two outer sides of the U-shaped plate are symmetrically provided with arc-shaped grooves, the inner walls of adjacent U-shaped plates are provided with sliders corresponding to the U-shaped plates, the sliders are slidably locked in the arc-shaped grooves, and the middle part of the U-shaped plate has an arc-shaped structure;

[0012] The second hydraulic telescopic rod has one end hinged to the side wall of the discharge pipe and the other end hinged to the lower end of the outer wall of the lowest U-shaped plate, and is used to drive each U-shaped plate to unfold or retract in a fan shape.

[0013] Preferably, a wear-resistant layer is provided at the bottom of the U-shaped plate at the lowest end, and a plurality of pressure sensing units are uniformly arranged between the wear-resistant layer and the U-shaped plate.

[0014] Preferably, the attitude adjustment component includes:

[0015] A rotating base is fixed to the bottom of the rear of the vehicle frame and located behind the feed port. A turntable is installed on the rotating base for rotational limitation.

[0016] The connecting rod is provided in two sets, with one end of the connecting rod symmetrically hinged to both sides of the feeding pipe and the other end symmetrically hinged to the bottom of the turntable.

[0017] The hydraulic telescopic rod is provided in two sets. The hydraulic telescopic rod is symmetrically hinged to both sides of the feeding pipe, and the other end is symmetrically hinged to the bottom of the turntable. The connecting rod is located between the hydraulic telescopic rod and the discharge port.

[0018] A rotary drive structure is mounted on the upper end of the vehicle frame, and the output end of the rotary drive structure passes through the frame and is coaxially and fixedly connected to the turntable.

[0019] Preferably, several scrapers are vertically arranged between the bottom ends of the two side walls of the lowest U-shaped plate.

[0020] Compared with the prior art, the present invention provides a road maintenance vehicle, which has the following beneficial effects:

[0021] In this invention, a paving unit is configured at the discharge pipe of the batching component, and combined with continuous material supply driven by a motor, the paving efficiency is improved through mechanized operation. At the same time, the attitude adjustment component supports a composite motion of pitch angle and horizontal rotation, which can cover irregular pits within a certain range, reduce the number of times the equipment is moved, and shorten the overall operation time. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a road maintenance vehicle;

[0023] Figure 2 This is a schematic diagram of the structure of a feeder assembly for a road maintenance vehicle.

[0024] Figure 3 A schematic diagram of a paving unit structure for a road maintenance vehicle;

[0025] Figure 4 A schematic diagram of the application state structure of a road maintenance vehicle's feed assembly;

[0026] In the diagram: 1. Vehicle body; 2. Insulated material box; 3. Discharge port; 4. Batching assembly; 5. Discharge pipe; 6. Attitude adjustment assembly; 7. Feed pipe; 8. Batching pipe; 9. Inspection cover; 10. Long shaft; 11. Motor; 12. Spiral blade; 13. Discharge hose; 14. Rotating base; 15. Turntable; 16. Connecting rod; 17. Hydraulic telescopic rod one; 18. U-shaped plate; 19. Hinge shaft; 20. Hydraulic telescopic rod two; 21. Arc-shaped chute. Detailed Implementation

[0027] Please see Figure 1-4 This utility model provides a road maintenance vehicle, including: a vehicle body 1, on which an insulated material box 2 is installed for filling high-temperature liquid asphalt material, and the lower end of the insulated material box 2 extends downward through the chassis of the vehicle body 1 and is provided with a discharge port 3.

[0028] The batching assembly 4 is installed at the bottom rear end of the vehicle body 1. The batching assembly 4 includes a batching pipe 8. The two ends of the batching pipe 8 are respectively connected to the interior of the pipe 8 by an inlet pipe 7 and an outlet pipe 5. The inlet pipe 7 is correspondingly arranged with the discharge port 3 and is used to receive the asphalt material output from the discharge port 3. A paving unit is provided at the outlet pipe 5 for paving and leveling the output asphalt material.

[0029] The attitude adjustment component 6 is located at the rear of the vehicle body 1 and is connected to the dispensing component 4. It is used to adjust the height and angle position of the discharge pipe 5 of the dispensing component 4.

[0030] It should be explained that the vehicle body 1 is equipped with a hydraulic control system and a temperature control system. The hydraulic control system is used to drive the batching component 4 and the attitude adjustment component 6, and the temperature control system is used to insulate or heat the asphalt material filled in the insulated material box 2.

[0031] Furthermore, a feeding hose 13 is installed at the feeding port 3, which extends into the feeding pipe 7 to adapt to the feeding of the feeding component 4 under different postures.

[0032] Specifically, the feeding hose 13 is connected using a high-temperature resistant fluororubber hose 13, which can withstand temperature shocks from -50℃ to 250℃. When adjusting the attitude of the batching component 4, it compensates for the displacement deviation between the batching component 4 and the feeding port 3, so that the asphalt material can always fall into the feeding pipe 7.

[0033] Furthermore, the dispensing assembly 4 also includes a long shaft 10 coaxially rotatably disposed within the dispensing pipe 8. A spiral blade 12 is adapted to be disposed on the shaft of the long shaft 10 and the inner wall of the dispensing pipe 8. A motor 11 is installed at one end of the dispensing pipe 8 near the vehicle body 1. The long shaft 10 is coaxially connected to the output end of the motor 11 for driving the long shaft 10 to rotate.

[0034] Specifically, the batching pipe 8 is made of seamless steel pipe, and the long shaft 10 and the spiral blade 12 are coaxially assembled inside. The blade pitch is designed to be 250mm (to match the repose angle characteristics of asphalt mixture). The motor 11 is a three-phase asynchronous motor, and the output is precisely controlled by a frequency converter.

[0035] Furthermore, the top of the dispensing pipe 8 is provided with several maintenance windows along its extension direction, and a maintenance cover 9 is rotatably provided on one side of the maintenance window. When the maintenance cover 9 is closed, its bottom smoothly transitions with the inner wall of the dispensing pipe 8 to prevent leakage of the mixture.

[0036] Furthermore, the paving unit includes: a U-shaped plate 18, wherein several U-shaped plates 18 are arranged in ascending order of size and are slidably nested together in sequence, the innermost U-shaped plate 18 has its inner wall fixedly connected to the outer wall of the discharge pipe 5, the opening of the U-shaped plate 18 faces the rear of the vehicle body 1, and the two sides of the opening end of each U-shaped plate 18 are hinged to the two sides of the discharge pipe 5 through hinge shafts 19, the two outer sides of the U-shaped plate 18 are symmetrically provided with arc-shaped grooves 21, the inner walls of adjacent U-shaped plates 18 are provided with sliders corresponding to the U-shaped plates 18, the sliders are slidably locked in the arc-shaped grooves 21, and the middle part of the U-shaped plate 18 has an arc-shaped structure;

[0037] The hydraulic telescopic rod 20 has one end hinged to the side wall of the discharge pipe 5 and the other end hinged to the lower end of the outer wall of the lowest U-shaped plate 18, and is used to drive each U-shaped plate 18 to unfold or retract in a fan shape.

[0038] Furthermore, a wear-resistant layer is provided at the bottom of the U-shaped plate 18 at the lowest point, and several pressure sensing units are uniformly arranged between the wear-resistant layer and the U-shaped plate 18.

[0039] Specifically, the paving unit adopts a three-level nested U-shaped plate 18 structure. Each level of the U-shaped plate 18 is made of 5mm thick wear-resistant steel plate, with a wear-resistant layer fixed at the bottom. The wear-resistant layer is a hard alloy layer. The hydraulic telescopic rod 20 pushes each level of the U-shaped plate to unfold along the arc-shaped slide 21, forming an arc-shaped paving surface for spreading the asphalt material delivered to the road surface. The asphalt material is scraped and spread by the inner side wall of the U-shaped plate 18. Specifically, the turntable 15 reciprocates to spread the asphalt material within the paving unit onto the area requiring curing.

[0040] The pressure sensing unit uses a piezoelectric sensor (range 0-50kN, accuracy ±1%FS) to monitor paving pressure in real time and feed it back to the control system, enabling automatic compensation of paving thickness. Furthermore, by using the pressure sensing unit, when the batching assembly is adjusting its posture, the measurement value from the pressure sensing unit can quickly achieve alignment between the paving unit and the reference benchmark (the horizontal line of the normal road surface).

[0041] Furthermore, the attitude adjustment component 6 includes:

[0042] A rotating base 14 is fixed at the bottom of the rear of the vehicle frame and located behind the feed port 3. A turntable 15 is installed on the rotating base 14 for rotational limitation.

[0043] The connecting rod 16 is provided in two sets. One end of the connecting rod 16 is symmetrically hinged to both sides of the feeding pipe 8, and the other end is symmetrically hinged to the bottom of the turntable 15.

[0044] Two sets of hydraulic telescopic rods 17 are provided. The hydraulic telescopic rods 17 are symmetrically hinged to both sides of the feeding pipe 8, and the other end is symmetrically hinged to the bottom of the turntable 15. The connecting rod 16 is located between the hydraulic telescopic rods 17 and the discharge port 3.

[0045] A rotary drive structure is mounted on the upper end of the frame of the vehicle body 1, and the output end of the rotary drive structure passes through the frame and is coaxially and fixedly connected to the turntable 15.

[0046] Specifically, the four-bar linkage formed by the connecting rod 16 and the hydraulic telescopic rod 17 can realize the synchronous adjustment of the pitch angle and ground height of the dispensing pipe 8. At the same time, in conjunction with the turntable 15, it can also adjust the horizontal angle between the dispensing pipe and the vehicle body 1, thereby increasing the dispensing operation range of the dispensing component 4 and improving its applicability.

[0047] Preferably, the batching component 4, the attitude adjustment component 6, and the discharge port 3 are equipped with wireless remote control to improve work efficiency through remote operation.

[0048] Preferably, the bottom U-shaped plate 18 has compacted surfaces extending outward on both sides to improve the leveling and compaction effect.

[0049] Furthermore, several scrapers are vertically arranged between the bottom ends of the two side walls of the lowest U-shaped plate 18 to improve the scraping and paving effect of the asphalt material.

[0050] In practice, the vehicle is moved to the road surface that needs maintenance. The attitude adjustment component is controlled wirelessly to adjust the attitude of the batching component. At the same time, the paving unit is adjusted so that its bottom end coincides with the reference benchmark (the horizontal line of the normal road surface). Then, the material is fed from the discharge port. The asphalt material is transferred to the discharge port by the batching component and then paved by the paving unit. Specifically, the turntable rotates back and forth so that the paving unit spreads the asphalt material in it on the area that needs maintenance. When the pressure sensor unit detects that the value reaches the preset threshold, or based on the worker's paving experience, the scraping and paving of the maintenance area is stopped.

[0051] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A road maintenance vehicle, characterized in that, include: The vehicle body (1) is equipped with an insulated material box (2) for filling high-temperature liquid asphalt material. The lower end of the insulated material box (2) extends downward through the chassis of the vehicle body (1) and is provided with a discharge port (3). The batching assembly (4) is installed at the bottom end of the vehicle body (1). The batching assembly (4) includes a batching pipe (8). The two ends of the batching pipe (8) are respectively connected to the inside of the pipe and a feed pipe (7) and a discharge pipe (5). The feed pipe (7) is correspondingly arranged with the discharge port (3) to receive the asphalt material output from the discharge port (3). A paving unit is provided at the discharge pipe (5) to pave and level the output asphalt material. The attitude adjustment component (6) is located at the rear of the vehicle body (1) and connected to the dispensing component (4) for adjusting the height and angle position of the discharge pipe (5) of the dispensing component (4).

2. The road maintenance vehicle according to claim 1, characterized in that, A feeding hose (13) is installed at the feeding port (3). The feeding hose (13) extends into the feeding pipe (7) to adapt to the feeding of the feeding component (4) under different postures.

3. A road maintenance vehicle according to claim 1, characterized in that, The dispensing assembly (4) also includes a long shaft (10) coaxially rotatably disposed inside the dispensing tube (8). The long shaft (10) is fitted with a spiral blade (12) adapted to the inner wall of the dispensing tube (8). A motor (11) is installed at one end of the dispensing tube (8) near the vehicle body (1). The long shaft (10) is coaxially connected to the output end of the motor (11) for driving the long shaft (10) to rotate.

4. A road maintenance vehicle according to claim 1, characterized in that, The top of the dispensing pipe (8) has several maintenance windows along its extension direction. A maintenance cover (9) is rotatably provided on one side of the maintenance window. When the maintenance cover (9) is closed, its bottom smoothly transitions to the inner wall of the dispensing pipe (8).

5. A road maintenance vehicle according to claim 1, characterized in that, The paving unit includes: a U-shaped plate (18), several U-shaped plates (18) of varying sizes are arranged and slidably nested together, the innermost U-shaped plate (18) is fixedly connected to the outer wall of the discharge pipe (5), the opening of the U-shaped plate (18) faces the rear of the vehicle body (1), and the two sides of the opening end of each U-shaped plate (18) are hinged to the two sides of the discharge pipe (5) through hinge shafts (19), the two outer sides of the U-shaped plate (18) are symmetrically provided with arc-shaped grooves (21), the inner walls of adjacent U-shaped plates (18) are provided with corresponding sliders, the sliders are slidably locked in the arc-shaped grooves (21), and the middle part of the U-shaped plate (18) is an arc-shaped structure; The second hydraulic telescopic rod (20) has one end hinged to the side wall of the discharge pipe (5) and the other end hinged to the lower end of the outer wall of the lowest U-shaped plate (18), and is used to drive each U-shaped plate (18) to unfold or retract in a fan shape.

6. A road maintenance vehicle according to claim 5, characterized in that, The bottom of the U-shaped plate (18) at the lowest end is provided with a wear-resistant layer, and several pressure sensing units are uniformly arranged between the wear-resistant layer and the U-shaped plate (18).

7. A road maintenance vehicle according to claim 1, characterized in that, The attitude adjustment component (6) includes: A rotating base (14) is fixed at the bottom of the rear of the frame and located behind the feed port (3). A turntable (15) is installed on the rotating base (14) for rotational limitation. The connecting rod (16) is provided in two sets. One end of the connecting rod (16) is symmetrically hinged to both sides of the feeding pipe (8), and the other end is symmetrically hinged to the bottom of the turntable (15). The hydraulic telescopic rod (17) is provided in two sets. The hydraulic telescopic rod (17) is symmetrically hinged to both sides of the feed pipe (8), and the other end is symmetrically hinged to the bottom of the turntable (15). The connecting rod (16) is located between the hydraulic telescopic rod (17) and the discharge port (3). A rotary drive structure is installed on the upper end of the frame of the vehicle body (1), and the output end of the rotary drive structure passes through the frame and is coaxially fixedly connected to the turntable (15).

8. A road maintenance vehicle according to claim 5, characterized in that, Several scrapers are vertically arranged between the bottom ends of the two side walls of the U-shaped plate (18) at the bottom.

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