A highway reconstruction and expansion project side feeding device and construction method

Abstract

The application relates to the technical field of expressway reconstruction and extension projects, in particular to a side feeding device for expressway reconstruction and extension projects. The device comprises a box body and wheels installed on the box body and used for supporting the box body. The front end of the box body is provided with a pushing roller used for pushing the rear wheels of a material conveying vehicle. The rear end of the box body is provided with a connecting assembly. The connecting assembly comprises connecting arms, arc-shaped pushing plates and adjusting mechanisms. One end of each connecting arm is installed on the box body, and the other end extends to the rear of the box body. The arc-shaped pushing plates are installed on the ends of the connecting arms away from the box body. The arc-shaped pushing plates are provided with arc-shaped openings used for abutting against the front part of the outer wall of the reducer shell of the driving wheel of an excavator. One connecting arm is arranged on each side of the box body. The adjusting mechanisms are used for adjusting the width of the two connecting arms. The application has the effect of enabling the two layers of pavement base layers to be continuously paved and improving the integrity of the two layers.

Description

Technical Field

[0001] This application relates to the technical field of highway reconstruction and expansion projects, and in particular to a side feeding device and construction method for highway reconstruction and expansion projects. Background Technology

[0002] In highway reconstruction and expansion projects, cement-stabilized crushed stone is usually used as the road base. According to the construction process requirements, the thickness of each layer of the road base after paving and compaction should not be less than 160mm and the maximum thickness should not be greater than 200mm. If the design thickness of the road base usually exceeds 200mm, it should be paved in layers.

[0003] The related technology discloses a layered paving process in which the base course is divided into a lower base course and an upper base course. The lower base course is laid and compacted first, and then the upper base course is laid on top of it. If the upper base course is laid directly on the lower base course, the material transport vehicle used to lay the lower base course will need to drive on the freshly compacted lower base course, which will damage the compacted lower base course and reduce the bonding between the two base courses. Therefore, the lower base course needs to be cured first, and the curing time is 7 days. At the same time, curing material needs to be laid on the lower base course during the curing process. After the curing is completed, the surface of the lower base course needs to be cleaned, and then the upper base course is laid on the upper surface of the lower base course.

[0004] However, in the above construction process, the laying of the completed road base layer will increase the maintenance cost of the lower base layer, and at the same time, it will make the integrity of the upper and lower layers poor. Summary of the Invention

[0005] In order to enable the continuous paving of two-layer road base and improve the integrity of the two layers, this application provides a side feeding device and construction method for highway reconstruction and expansion projects.

[0006] This application provides a side-feeding device for highway reconstruction and expansion projects, which adopts the following technical solution:

[0007] A side-feeding device for highway reconstruction and expansion projects includes a box and wheels mounted on the box for supporting the box. A push roller is provided at the front end of the box for pushing the rear wheels of a material transport vehicle. A connecting assembly is provided at the rear end of the box. The connecting assembly includes a connecting arm, an arc-shaped push plate, and an adjustment mechanism. One end of the connecting arm is mounted on the box, and the other end extends rearward from the box. The arc-shaped push plate is mounted at the end of the connecting arm away from the box. The arc-shaped opening of the push plate is used to abut against the front of the outer wall of the reducer housing of the excavator drive wheel. One connecting arm is provided on each side of the box. The adjustment mechanism is used to adjust the width of the two connecting arms.

[0008] By adopting the above technical solution, during use, the wheels installed on the box body are used for the box body to move, the connecting component installed at the rear of the box body is used to connect the excavator, and the push roller installed at the front of the box body is used to push the material transport vehicle, so that the mixture in the material transport vehicle is poured into the box body, and the excavator delivers the mixture from the original road surface to the paver's feed inlet. Thus, during construction, double-layer continuous paving can avoid the material transport vehicle disturbing the completed lower layer structure when paving the upper layer, reducing the cost and time required for maintenance, increasing the adhesion between the upper and lower base layers, and enabling the upper and lower layers to be laid continuously and form a complete load-bearing whole, improving the construction quality of the road structure. At the same time, the width of the two connecting arms can be adjusted by the adjustment mechanism, allowing the excavator to enter between the two connecting arms. Then, the arc-shaped push plate is adjusted to the front of the outer wall of the excavator drive wheel reducer housing, so that the arc-shaped push plate can be compatible with more excavators, making it more applicable.

[0009] Preferably, the adjusting mechanism includes a bidirectional screw and a handwheel. The bidirectional screw is rotatably connected to the rear end of the housing. Both ends of the bidirectional screw are threadedly connected to two connecting arms, respectively. The handwheel is coaxially fixed to the end of the bidirectional screw. A guide groove is provided on the side wall of the housing, and one end of the connecting arm is slidably connected in the guide groove.

[0010] By adopting the above technical solution, the bidirectional screw can be rotated by the handwheel, and the connecting arms connected to both ends of the bidirectional screw can move relatively far away or close together under the action of the bidirectional screw. At the same time, the guide groove on the side wall of the housing can make the position of the connecting arms relatively stable after installation.

[0011] Preferably, a clamping assembly is provided at one end of the connecting arm located in the guide groove. The clamping assembly includes an eccentric wheel and a handle. A slider is slidably disposed on the connecting arm along the length direction of the connecting arm. The eccentric wheel is rotatably connected to the slider, and the handle is fixed to the eccentric wheel. The slider is subjected to a spring force pointing towards the guide groove along the length direction of the connecting arm.

[0012] By adopting the above technical solution, the clamping component includes an eccentric wheel and a handle. When the connecting arm is installed in the guide groove, the handle is rotated so that the far point of the eccentric wheel abuts against the bottom of the guide groove. Thus, the thrust on the connecting arm can be transmitted to the housing by the eccentric wheel, which improves the stability of the pushing of the housing when the connecting arm is under force.

[0013] Preferably, a sliding groove is fixedly provided on the connecting arm, a bolt is provided at one end of the sliding groove, the end of the bolt passes through the end of the sliding groove and is threadedly connected to the slider, and a spring is sleeved on the bolt, one end of the spring abuts against the slider and the other end abuts against the end of the sliding groove.

[0014] By adopting the above technical solution, a bolt is set at one end of the slide groove. The bolt passes through the slide groove and is threadedly connected to the slider, so that the bolt can adjust the position of the eccentric wheel, so that the eccentric wheel can enter the guide groove more easily. At the same time, the spring force can be adjusted to increase the force of the eccentric wheel on the housing.

[0015] Preferably, a lifting assembly is provided at the bottom of the box body. The lifting assembly includes a frame, scissor braces, and a drive mechanism for driving the scissor braces to lift. The frame is slidably connected to the box body, and the wheels are rotatably mounted on the frame. A lifting assembly is installed at both the front and rear ends of the box body. The lifting assembly at the front end of the box body is used to adjust the height of the push roller, and the lifting assembly at the rear end of the box body is used to adjust the height of the arc-shaped push plate.

[0016] By adopting the above technical solution, when the drive mechanism raises and lowers the scissor brace, the front and rear ends of the box can be adjusted separately. When the rear end of the box is adjusted by the lifting component, the arc-shaped push plate can be aligned with the center of the excavator's drive wheel, so that the excavator's force on the box can be along the length of the box. When adjusting the height of the push roller at the front end of the box, the push roller can be brought closer to the middle of the rear wheel of the material transport vehicle, so as to better push the material transport vehicle.

[0017] Preferably, a rotating shaft is fixedly provided in the middle of the arc-shaped push plate, the rotating shaft is rotatably connected to the connecting arm, two limiting blocks are fixedly provided on the connecting arm, a limiting rod is fixedly provided on the connecting arm, and the limiting rod is located between the two limiting blocks.

[0018] By adopting the above technical solution, the arc-shaped push plate is rotatably connected to the connecting arm via a rotating shaft, and the arc-shaped push plate is kept in the position corresponding to the excavator drive wheel by the limiting rod and two limiting blocks. When the arc-shaped push plate abuts against the reducer housing of the excavator drive wheel, the arc-shaped push plate can automatically adapt to the angle, increase the contact surface, and reduce the deformation caused by uneven force on the arc-shaped push plate.

[0019] Preferably, the scissor brace includes two diagonal rods hinged in the middle. One end of one diagonal rod is rotatably connected to the frame, and the other end is rotatably connected to an upper moving block. One end of the other diagonal rod is rotatably connected to the bottom of the box, and the other end is rotatably connected to a lower moving block. The upper moving block is slidably connected to the bottom of the box, and the lower moving block moves along the width direction of the box through a drive mechanism. Two scissor braces are provided on one frame, and the two scissor braces are driven simultaneously by the same drive mechanism.

[0020] By adopting the above technical solution, when the drive mechanism drives the lower moving blocks to move, the two lower moving blocks drive one inclined rod respectively, and the scissor braces of the two inclined rod assemblies can rise and fall. The two scissor braces are driven by the same drive mechanism, so that both sides of the box can rise and fall simultaneously.

[0021] Preferably, one end of the connecting arm with the arc-shaped push plate is provided with a spherical shell, and a sphere is rotatably connected inside the spherical shell. The sphere protrudes from the spherical shell toward the position of the excavator and is used to abut against the end face of the reducer housing of the excavator drive wheel.

[0022] By adopting the above technical solution, the rotatable connecting ball inside the spherical shell abuts against the end face of the reducer housing of the excavator drive wheel, thus limiting the position of the connecting arm and reducing the friction force on the connecting arm. When the two connecting arms are disengaged from the excavator, the ball can also guide the excavator to enter between the two connecting arms.

[0023] Preferably, a plurality of rollers are arranged on the inner wall of the arc-shaped push plate along the length of the arc-shaped push plate, and the rollers are rotatably connected to the arc-shaped push plate.

[0024] By adopting the above technical solution, multiple rollers are arranged on the inner wall of the arc-shaped push plate. The rollers can reduce the friction generated when the arc-shaped push plate is subjected to thrust, while protecting the excavator and improving its applicability.

[0025] This application provides a side-feeding construction method for highway reconstruction and expansion projects, employing the following technical solution:

[0026] A side-feeding construction method for highway reconstruction and expansion projects, using the aforementioned side-feeding device for highway reconstruction and expansion projects, includes connecting a box body to an excavator, with push rollers at the front end of the box body used to push a material transport vehicle, the excavator, box body, and material transport vehicle all moving on the existing highway surface, the excavator, box body, and material transport vehicle all moving with the paver, and the excavator feeding the mixture from the box body and material transport vehicle into the paver's feed inlet.

[0027] By adopting the above technical solution, the excavator, the caisson, and the material transport vehicle all move on the original highway road surface. The synchronous movement of the material transport vehicle, the caisson, and the excavator enables the excavator to deliver the mixture into the paver, thereby avoiding the material transport vehicle from crushing the completed subbase structure, reducing maintenance costs, and improving the integrity between the two base layers.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. The push roller installed at the front of the box body is used to push the material transport vehicle, so that the mixture in the material transport vehicle is poured into the box body. The excavator delivers the mixture from the original road surface to the feed port of the paver. Thus, during construction, the double-layer continuous paving can avoid the material transport vehicle disturbing the completed lower layer structure when the upper layer is paved, so that the two layers of road base can be continuously paved, improving the integrity of the two layers.

[0030] 2. When the connecting arm is installed into the guide groove, turn the handle so that the far point of the eccentric wheel abuts against the bottom of the guide groove. This allows the thrust on the connecting arm to be transmitted to the housing through the eccentric wheel, improving the stability of the pushing action of the connecting arm on the housing when it is under force.

[0031] 3. The arc-shaped push plate is rotatably connected to the connecting arm. When the arc-shaped push plate abuts against the reducer housing of the excavator drive wheel, the arc-shaped push plate can automatically adapt to the angle, increase the contact surface, and reduce the deformation caused by uneven force on the arc-shaped push plate. Attached Figure Description

[0032] Figure 1 This is a schematic diagram illustrating the usage state of an embodiment of this application;

[0033] Figure 2 This is a schematic diagram of the overall structure of the box in an embodiment of this application;

[0034] Figure 3 This is a schematic diagram of the installation of the clamping component in an embodiment of this application;

[0035] Figure 4 This is a schematic diagram of the lifting component in an embodiment of this application;

[0036] Figure 5 This is a schematic diagram showing the position of the limiting block in an embodiment of this application.

[0037] Explanation of reference numerals in the attached drawings: 1. Box body; 11. Wheel; 12. Push roller; 13. Extension arm; 16. Trench; 2. Connecting assembly; 21. Connecting arm; 22. Arc-shaped push plate; 23. Adjusting mechanism; 231. Bidirectional screw; 232. Handwheel; 3. Excavator; 4. Material transport vehicle; 51. Spherical shell; 52. Sphere; 53. Roller; 6. Guide groove; 7. Clamping assembly; 71. Eccentric wheel; 72. Handle 73. Slide rail; 74. Slider; 75. Spring; 76. Bolt; 77. Locking surface; 8. Lifting assembly; 81. Frame; 82. Scissor brace; 821. Diagonal bar; 822. Upper moving block; 823. Lower moving block; 824. Slide rail; 83. Drive mechanism; 831. Drive screw; 832. Reducer; 833. Drive motor; 9. Rotating shaft; 91. Limit block; 92. Limit rod. Detailed Implementation

[0038] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0039] This application discloses a side-feeding device for highway reconstruction and expansion projects, with reference to... Figure 1The system includes a box body 1 formed by welding steel plates. Wheels 11 are mounted on the box body 1 to support its movement. The front end of the box body 1 is lower than the rear end. A push roller 12 is located at the front end of the box body 1, and a connecting assembly 2 is located at the rear end. The push roller 12 abuts against the rear wheels of a material transport vehicle 4, and the connecting assembly 2 connects to an excavator 3. In use, the excavator 3 moves the box body 1 via the connecting assembly 2, causing the push roller 12 to abut against the rear wheels of the material transport vehicle 4 (a dump truck), and the excavator 3 is a tracked excavator 3. Excavator 3, container 1, and material transport vehicle 4 all travel on the existing highway and close to the side that needs to be expanded. After the first layer of the road base layer that needs to be expanded has been laid, the paver can travel on the surface of the completed first layer when laying the second layer, so that the paver and excavator 3 are level and move forward synchronously. Material transport vehicle 4 waits in the neutral position. Excavator 3 pushes material transport vehicle 4 forward through container 1. Then, material transport vehicle 4 can pour the mixture into container 1, and excavator 3 can send the mixture from material transport vehicle 4 and container 1 to the paver's feed inlet for the paver to pave. After material transport vehicle 4 finishes unloading, another material transport vehicle 4 continues. Because the material transport vehicle 4 has a large load capacity, it can drive on the existing road surface to avoid disturbing the completed layer during the upper layer paving. Moreover, it does not require the material transport vehicle 4 to compact the surface, allowing the upper surface of the completed layer to be directly paved with the second layer. This significantly reduces the maintenance cycle, lowers the cost and time required for maintenance, and also increases the adhesion between the upper and lower layers, making the water-stabilized layer a complete load-bearing whole and improving the quality of road structure construction.

[0040] refer to Figure 2An extension arm 13 is fixedly installed at the front end of the housing 1. The extension arm 13 is arranged along the length of the housing 1. A push roller 12 is rotatably installed at the end of the extension arm 13 away from the housing 1. The axis of the push roller 12 is set horizontally so that the push roller 12 can simultaneously abut against the wheels 11 on both sides of the material transport vehicle 4. The connecting assembly 2 includes a connecting arm 21, an arc-shaped push plate 22, and an adjustment mechanism 23 for adjusting the position of the connecting arm 21. The connecting arm 21 extends horizontally to the rear side of the housing 1. One connecting arm 21 is set on each side of the housing 1. The adjustment mechanism 23 is used to adjust the relative distance between the two connecting arms 21 so that the width of the connecting arm 21 can adapt to the width of the excavator 3. At the same time, the arc-shaped push plate 22 is located at the end of the connecting arm 21 away from the housing 1. The arc shape of the arc-shaped push plate 22 is smaller than a semicircle and arches towards the front end of the housing 1 so that the arc opening of the arc-shaped push plate 22 faces the excavator 3. During installation, the arc-shaped push plate 22 is first adjusted to a position greater than the width of the excavator 3, so that the excavator 3 is moved to the position between the two connecting arms 21. Then, the arc-shaped push plate 22 is aligned with the end side of the drive wheel of the excavator 3, so that the arc-shaped push plate 22 is directly opposite the reducer housing of the drive wheel of the excavator 3. Since the reducer housing of the drive wheel of the excavator 3 is cylindrical, it can enter the arc-shaped opening of the arc-shaped push plate 22. Through the contact with the arc-shaped push plate 22, the housing 1 can move forward under the action of the excavator 3 and act on the rear wheel of the material transport vehicle 4, so that the material transport vehicle 4 moves.

[0041] refer to Figure 2 A spherical shell 51 is provided at the end of the connecting arm 21 away from the housing 1. A sphere 52 is provided inside the spherical shell 51, with the side of the sphere 52 protruding from the spherical shell 51 facing the centerline of the housing 1. The sphere 52 is rotatably connected inside the spherical shell 51. When the two connecting arms 21 are connected to the excavator 3, the two spheres 52 gradually abut against the end face of the reducer housing of the excavator 3's drive wheel. The spheres 52 can control the minimum distance between the two connecting arms 21 and reduce the friction of the excavator 3 on the connecting arms 21 during its movement. When the excavator 3 disengages from the two connecting arms 21 and moves upward between the two connecting arms 21, the two spheres 52 can also guide the excavator 3 into the space between the two connecting arms 21. Multiple rollers 53 are evenly arranged on the inner surface of the arc-shaped push plate 22 along the arc shape formed by the arc-shaped push plate 22. The rollers 53 are rotatably connected to the arc-shaped push plate 22, so that the excavator 3 is connected to the arc-shaped push plate 22 through the rollers 53. This reduces the friction on the excavator 3 during movement, improves practicality, and can be adapted to a wide variety of excavators 3, and can be directly used with the excavator 3.

[0042] refer to Figure 2 and Figure 3The adjusting mechanism 23 includes a bidirectional screw 231 and a handwheel 232. The bidirectional screw 231 is horizontally arranged along the width of the housing 1 and is rotatably connected to the rear end of the housing 1. Both ends of the bidirectional screw 231 pass through corresponding connecting arms 21, making the connecting arms 21 threadedly connected to the bidirectional screw 231. The handwheel 232 is fixed to the end of the bidirectional screw 231. Rotating the handwheel 232 allows the connecting arms 21 to move along the length of the bidirectional screw 231. Guide grooves 6 are provided on both sides of the housing 1. The guide grooves 6 are U-shaped, with the U-shaped openings facing the connecting arms 21, allowing the ends of the connecting arms 21 to be inserted into the guide grooves 6. The sidewalls of the connecting arms 21 abut against the inner walls of the guide grooves 6, allowing the connecting arms 21 to slide within the guide grooves 6, thus limiting the direction of the connecting arms 21. When the connecting arm 21 slides out of the guide groove 6, the width of the two connecting arms 21 is greater than the width of the excavator 3; when the connecting arm 21 is connected to the excavator 3, the connecting arm 21 enters the guide groove 6.

[0043] refer to Figure 3 A clamping assembly 7 is provided at one end of the connecting arm 21 located within the guide groove 6. The clamping assembly 7 includes an eccentric wheel 71 and a handle 72. The eccentric wheel 71 is fixedly connected to the handle 72. A slide groove 73 is fixedly provided on the connecting arm 21. A slider 74 is slidably connected within the slide groove 73. The eccentric wheel 71 is rotatably mounted on the slider 74. A spring 75 is provided within the slide groove 73. A bolt 76 is provided at one end of the slide groove 73. The spring 75 is fitted onto the bolt 76. The bolt 76 passes through the side wall of the end of the slide groove 73 and is threadedly connected to the slider 74. One end of the spring 75 abuts against the slider 74, and the other end abuts against the end of the slide groove 73. When the eccentric wheel 71 is inside the guide groove 6, the eccentric wheel 71 is close to the U-shaped bottom of the guide groove 6. When the eccentric wheel 71 is rotated by the handle 72, the far end of the eccentric wheel 71 can be brought to the U-shaped bottom of the guide groove 6. When the connecting arm 21 is under force, the force of the connecting arm 21 can be transmitted to the housing 1 through the eccentric wheel 71, improving the connection stability between the connecting arm 21 and the housing 1. By rotating the bolt 76, the position of the eccentric wheel 71 relative to the connecting arm 21 can be adjusted so that when the eccentric wheel 71 is loosened, the end of the bolt 76 can abut against the end of the slide groove 73, controlling the position of the eccentric wheel 71, thereby facilitating the connecting arm 21 to enter the guide groove 6. A locking surface 77 is provided at the far end of the eccentric wheel 71. The locking surface 77 is used to fix the position of the eccentric wheel 71 when it abuts against the bottom of the guide groove 6.

[0044] refer to Figure 4A lifting assembly 8 is provided below the box body 1. The lifting assembly 8 includes a frame 81, a scissor brace 82, and a drive mechanism 83 for driving the scissor brace 82 to lift. The frame 81 is U-shaped with the opening facing upward. The two ends of the frame 81 are located on the left and right sides of the box body 1, respectively. The two side walls of the box body 1 are respectively welded with steel plates to form grooves 16, so that the two ends of the U-shaped frame 81 are slidably connected in the grooves 16. The U-shaped frame 81 is rotatably mounted with wheels 11 at the positions on both sides of the box body 1. The scissor brace 82 is located in the middle of the frame 81 and between the frame 81 and the bottom surface of the box body 1, so that the scissor brace 82 can adjust the position of the box body 1 relative to the wheels 11. At the same time, a pair of wheels 11 are connected to the front end and the rear end of the box body 1 through the lifting assembly 8. The scissor brace 82 includes two diagonal rods 821. One end of one diagonal rod 821 is rotatably connected to the frame 81, and the other end is rotatably connected to an upper moving block 822. One end of the other diagonal rod 821 is rotatably connected to the bottom of the housing 1, and the other end is rotatably connected to a lower moving block 823. The upper moving block 822 is slidably connected to a slide rail 824 located on the bottom surface of the housing 1. The slide rail 824 is parallel to the width direction of the housing 1. The drive mechanism 83 includes a drive screw 831, a reducer 832, and a drive motor 833. The reducer 832 is fixed to the frame 81, and the drive motor 833 is fixed to the frame 81. A drive screw 831 is fixed coaxially to the input shaft of the reducer 832 and the output shaft of the reducer 832. The drive screw 831 is rotatably connected to the frame 81, and the lower moving block 823 is threadedly connected to the drive screw 831. The length direction of the drive screw 831 is parallel to the width direction of the housing 1, so that the drive screw 831 can drive the lower moving block 823 to move along the width direction of the housing 1. At the same time, the middle of the two diagonal rods 821 are rotatably connected, so that the two diagonal rods 821 can rotate simultaneously under the action of the drive screw 831. Two scissor braces 82 are set on the same frame 81 and located near the wheel 11 to improve the connection stability between the frame 81 and the housing 1. The two drive screws 831 are coaxially connected to a reducer 832. The height of the connecting arm 21 can be adjusted by the lifting assembly 8 near the rear end of the housing 1 so that the connecting arm 21 is at the same height as the center of the excavator 3 drive wheel. Adjusting the lifting assembly 8 near the front end of the box 1 is used to adjust the height of the extension arm 13 so that the push roller 12 can be close to the middle of the wheel of the material transport vehicle 4 so that the push roller 12 can push the material transport vehicle 4.

[0045] refer to Figure 4 and Figure 5A rotating shaft 9 is fixedly mounted on the arc-shaped push plate 22. The rotating shaft 9 is horizontal and perpendicular to the connecting arm 21, and is located at the middle of the arc-shaped push plate 22, allowing it to rotatably connect to the connecting arm 21. The arc-shaped push plate 22 is thus rotatably connected to the connecting arm 21 via the rotating shaft 9. Simultaneously, two limiting blocks 91 are fixedly mounted on the connecting arm 21, spaced vertically. A limiting rod 92 is positioned between the two limiting blocks 91 and is fixed to the arc-shaped push plate 22, allowing it to move between the two limiting blocks 91. The limiting rod 92 also limits the orientation of the arc-shaped push plate 22. When the arc-shaped push plate 22 is subjected to thrust, it rotates and comes into contact with the housing of the excavator 3 reducer, preventing stress concentration caused by localized contact and thus avoiding deformation of the arc-shaped push plate 22.

[0046] This embodiment also discloses a side-feeding construction method for highway reconstruction and expansion projects. The above-mentioned side-feeding device for highway reconstruction and expansion projects is used for construction. First, the box body 1 is connected to the excavator 3 through the connecting component 2. The material transport vehicle 4 abuts against the push roller 12 at the front end of the box body 1. The excavator 3, box body 1 and material transport vehicle 4 are all located on the original highway road surface and move with the paver. During the process of the material transport vehicle 4 unloading the mixture into the box body 1, the excavator 3 delivers the mixture into the paver for paving.

[0047] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A side-feeding device for highway reconstruction and expansion projects, characterized in that: The system includes a housing (1) and wheels (11) mounted on the housing (1) for supporting the housing (1). The housing (1) is located between the excavator (3) and the material transport vehicle (4). A push roller (12) is provided at the front end of the housing (1) for pushing the rear wheels of the material transport vehicle (4). A connecting assembly (2) is provided at the rear end of the housing (1). The connecting assembly (2) includes a connecting arm (21), an arc-shaped push plate (22), and an adjustment mechanism (23). One end of the connecting arm (21) is mounted on the housing (1), and the other end extends to the rear of the housing (1). The arc-shaped push plate (22) is mounted on the end of the connecting arm (21) away from the housing (1). The arc-shaped opening of the arc-shaped push plate (22) is used to abut against the front of the outer wall of the reducer housing of the excavator (3). One connecting arm (21) is provided on each side of the housing (1). The adjustment mechanism (23) is used to adjust the width of the two connecting arms (21). The adjustment mechanism (23) includes a bidirectional screw (231) and a handwheel (232). The bidirectional screw (231) is rotatably connected to the rear end of the housing (1). The two ends of the bidirectional screw (231) are threadedly connected to two connecting arms (21) respectively. The handwheel (232) is coaxially fixed to the end of the bidirectional screw (231). A guide groove (6) is provided on the side wall of the housing (1). One end of the connecting arm (21) is slidably connected in the guide groove (6).

2. The side feeding device for highway reconstruction and expansion projects according to claim 1, characterized in that: The connecting arm (21) is provided with a clamping assembly (7) at one end located in the guide groove (6). The clamping assembly (7) includes an eccentric wheel (71) and a handle (72). A slider (74) is slidably provided on the connecting arm (21) along the length direction of the connecting arm (21). The eccentric wheel (71) is rotatably connected to the slider (74), and the handle (72) is fixed on the eccentric wheel (71). The slider (74) is subjected to a spring force pointing towards the guide groove (6) along the length direction of the connecting arm (21).

3. A side feeding device for highway reconstruction and expansion projects according to claim 2, characterized in that: A slide groove (73) is fixedly provided on the connecting arm (21). A bolt (76) is provided at one end of the slide groove (73). The end of the bolt (76) passes through the end of the slide groove (73) and is threadedly connected to the slider (74). A spring (75) is sleeved on the bolt (76). One end of the spring (75) abuts against the slider (74), and the other end abuts against the end of the slide groove (73).

4. The side feeding device for highway reconstruction and expansion projects according to claim 1, characterized in that: A lifting assembly (8) is provided at the bottom of the box (1). The lifting assembly (8) includes a frame (81), a scissor brace (82), and a driving mechanism (83) for driving the scissor brace (82) to lift. The frame (81) is slidably connected to the box (1). The wheel (11) is rotatably mounted on the frame (81). A lifting assembly (8) is installed at both the front and rear ends of the box (1). The lifting assembly (8) at the front end of the box (1) is used to adjust the height of the push roller (12), and the lifting assembly (8) at the rear end of the box (1) is used to adjust the height of the arc-shaped push plate (22).

5. A side feeding device for highway reconstruction and expansion projects according to claim 4, characterized in that: A rotating shaft (9) is fixedly installed in the middle of the arc-shaped push plate (22). The rotating shaft (9) is rotatably connected to the connecting arm (21). Two limiting blocks (91) are fixedly installed on the connecting arm (21). A limiting rod (92) is fixedly installed on the connecting arm (21). The limiting rod (92) is located between the two limiting blocks (91).

6. A side feeding device for highway reconstruction and expansion projects according to claim 4, characterized in that: The scissor brace (82) includes two diagonal rods (821) hinged in the middle. One end of one diagonal rod (821) is rotatably connected to the frame (81), and the other end is rotatably connected to an upper moving block (822). One end of the other diagonal rod (821) is rotatably connected to the bottom of the box (1), and the other end is rotatably connected to a lower moving block (823). The upper moving block (822) is slidably connected to the bottom of the box (1), and the lower moving block (823) moves along the width direction of the box (1) through a drive mechanism (83). Two scissor braces (82) are provided on one of the frames (81), and the two scissor braces (82) are driven simultaneously by the same drive mechanism (83).

7. A side feeding device for highway reconstruction and expansion projects according to claim 1, characterized in that: The connecting arm (21) is provided with a spherical shell (51) at one end of the arc-shaped push plate (22). A sphere (52) is rotatably connected inside the spherical shell (51). The sphere (52) protrudes from the spherical shell (51) toward the excavator (3). The sphere (52) is used to abut against the end face of the reducer housing of the drive wheel of the excavator (3).

8. A side feeding device for highway reconstruction and expansion projects according to claim 1, characterized in that: Multiple rollers (53) are arranged along the length of the arc-shaped inner wall of the arc-shaped push plate (22), and the rollers (53) are rotatably connected to the arc-shaped push plate (22).

9. A method for lateral feeding construction in highway reconstruction and expansion projects, characterized in that: Construction is carried out using a side feeding device for highway reconstruction and expansion project as described in any one of claims 1-8, including connecting the box body (1) to the excavator (3), the push roller (12) at the front end of the box body (1) is used to push the material transport vehicle (4), the excavator (3), the box body (1) and the material transport vehicle (4) all move on the original highway road surface, the excavator (3), the box body (1) and the material transport vehicle (4) all move with the paver and feed the mixture into the paver's feed port from the box body (1) and the material transport vehicle (4) through the excavator (3).

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