An adjustable concrete road surface leveling device

Abstract

An adjustable concrete road surface leveling device relates to the technical field of road construction equipment. It includes a truss arranged in the left-right direction, a track arranged on the truss in the left-right direction, a trolley assembly traveling along the track, a traveling drive mechanism for driving the trolley assembly to travel along the track, and a screed plate assembly arranged below the truss and movably connected to the trolley assembly. The screed plate assembly is arranged in the front-rear direction, and a front-rear leveling drive mechanism for driving the screed plate assembly to level the concrete road surface in the front-rear direction is installed on the trolley assembly; an angle adjustment mechanism is installed between the trolley assembly and the screed plate assembly, and the angle adjustment mechanism is used to adjust the angle between the screed plate of the screed plate assembly and the leveled road surface. The present invention adds an angle adjustment mechanism for leveling angle adjustment, so that the screed plate can deflect a certain angle along the leveling direction during the working process, and no moving traces will be left on the concrete road surface during the leveling process by the inclined screed plate.

Description

Technical Field

[0001] The present invention relates to the technical field of pavement construction equipment, and particularly to an adjustable concrete pavement troweling device. Background Art

[0002] During the construction process of a concrete slipform paver, the formed concrete pavement will inevitably have defects such as pitted surface, longitudinal unevenness, and air bubble floating slurry, which need to be troweled. Application No.: 202010017525.1 discloses an electro-hydraulic control troweling device and a concrete slipform paver. By cooperating with the walking drive mechanism that drives the driving walking trolley to walk, the concrete pavement can be automatically troweled simultaneously, saving labor costs and improving construction efficiency.

[0003] However, there are still some obvious defects that can be improved during actual use: 1) A single driving motor is used to drive the walking trolley to walk. Before use, it is necessary to manually adjust and tension the cable for the traction trolley to walk, which is time-consuming and laborious; 2) The troweling device is adjusted for lifting through a screw jack. The structure is relatively simple and mainly consists of two sliding sleeves. The sleeves are locked by bolts. During paving, when the walking trolley moves left and right, the truss is relatively easy to be shaken; 3) Both sides of the truss are connected to the paver through fixed connection frames. The fixed connection frames are relatively long, forming a relatively long force arm. During the working process of the paver, relatively large vibrations will be generated, and the overall structural stability is poor; 4) When the trowel plate works, it is parallel to the troweling surface. During the walking process of the trowel plate, traces during the moving process will be left on the concrete forming surface. And during the troweling process, the floating slurry on the concrete surface will be pushed to both sides, causing concrete accumulation on both sides, and manual assistance is required to trowel both sides.

[0004] In addition, Patent No.: 202110379112.2 discloses an automatic concrete pavement troweling device. The second connecting inclined plates on both sides of the troweling device are slidably connected to the trowel plate. During the troweling process, it is very easy to form slippage with the trowel plate, and the troweling force is small and the troweling effect is poor. Summary of the Invention

[0005] The purpose of the present invention is to provide an adjustable concrete pavement troweling device, which can effectively solve the problems in the background art.

[0006] The technical solution to achieve the above purpose is: An adjustable concrete pavement troweling device, including a truss arranged in the left-right direction, a track arranged on the truss in the left-right direction, a trolley assembly walking along the track, a walking drive mechanism for driving the trolley assembly to walk along the track, and a trowel plate assembly arranged below the truss and movably connected to the trolley assembly. The trowel plate assembly is arranged in the front-back direction, and a front-back troweling drive mechanism for driving the trowel plate assembly to trowel the concrete pavement in the front-back direction is installed on the trolley assembly;

[0007] It is characterized in that: an angle adjusting mechanism is installed between the truss vehicle assembly and the screed plate assembly, and the angle adjusting mechanism is used to adjust the angle between the screed plate of the screed plate assembly and the road surface to be leveled.

[0008] Furthermore, the traveling driving mechanism includes a double-barrel wire winder arranged on the truss. The double-barrel wire winder includes a wheel frame fixedly installed on the truss. Symmetrically arranged wire winding wheels are rotatably installed on the left and right sides of the wheel frame. Main driving motors respectively connected to the wire winding wheels are installed on the wheel frame. Driving cables are wound on the wire winding wheels. The driving cable wound on one side of the wire winding wheel is connected to the truss vehicle assembly via a guide wheel, and the driving cable wound on the other side of the wire winding wheel is connected to the truss vehicle assembly via a wire guiding wheel. The guide wheel and the wire guiding wheel are both rotatably installed on the truss vehicle.

[0009] Furthermore, the truss vehicle assembly includes a truss vehicle frame. Guide wheels for traveling and supporting on the track are rotatably installed on both side walls of the truss vehicle frame. An upper hinge frame is rotatably installed in the truss vehicle frame through a rotating shaft arranged in the left-right direction. The lower part of the upper hinge frame extends downward out of the truss vehicle frame. The screed plate assembly is hinged to the lower end of the upper hinge frame through two inverted V-shaped lower hinge frames.

[0010] Furthermore, both the lower hinge frame and the screed plate are hinged, so that the screed plate can rotate in the left-right direction, and the lower hinge frame on one side is simultaneously slidably connected to the screed plate in the front-back direction.

[0011] Furthermore, first hinge seats are respectively arranged at both ends of the back surface of the screed plate. A sliding joint capable of moving back and forth is arranged inside the first hinge seat at one end, and a fixed joint capable of moving back and forth is arranged inside the first hinge seat at the other end;

[0012] Both the sliding joint and the fixed joint include a support. A guide shaft parallel to the length direction of the screed plate is arranged on the support of the sliding joint. A second hinge seat is arranged on the support of the fixed joint. Turnbuckles are respectively hinged between the sliding joint and the corresponding first hinge seat, and between the fixed joint and the corresponding first hinge seat. A pull rod is hinged between the sliding joint and the fixed joint; the lower end of the lower hinge frame on the same side as the sliding joint is slidably and rotatably connected to the guide shaft through a guide block, and the lower end of the lower hinge frame on the same side as the fixed joint is hinged to the second hinge seat.

[0013] Furthermore, the angle adjustment mechanism includes a mounting frame arranged near one side of the sliding joint, the mounting frame is fixedly mounted on the gantry assembly, a worm gear reduction box and a driver for driving the worm of the worm gear reduction box to rotate are mounted on the mounting frame, a capstan connected to the worm gear transmission is arranged outside the worm gear reduction box, an upper connecting rod arranged downward is eccentrically fixedly connected to the capstan, a lower connecting rod is connected to the lower end of the upper connecting rod for sliding up and down, the lower end of the lower connecting rod is hinged to the middle part of the inner end of the sliding joint, an opening is arranged on the lower hinge frame hinged to the sliding joint, the lower connecting rod passes through the opening of the corresponding lower hinge frame, so that the lower hinge frame on the same side as the lower connecting rod can move forward, backward, left and right relative to the lower connecting rod.

[0014] Furthermore, the driver comprises a telescopic hydraulic cylinder, the tail end of which is hinged on a mounting frame, the telescopic end of which is hinged with a pulling plate, and the front end of which is fixedly connected to the worm of the worm gear reduction box.

[0015] Furthermore, the front and rear smoothing drive mechanism includes an auxiliary drive motor installed on the truss frame, the driving end of the auxiliary drive motor is connected to a turntable arranged along the front and rear direction, a connecting rod is hinged between the turntable and the lower part of the upper hinge frame, and the end of the connecting rod connected to the turntable is eccentrically arranged relative to the rotation center of the turntable.

[0016] Furthermore, a hose reel support is installed on the truss, a hose reel is installed on the hose reel support, a hydraulic oil delivery hose for connecting the auxiliary drive motor and the telescopic hydraulic cylinder is wound on the hose reel, a rotating joint whose axis is parallel to the axis of the hose reel is installed on the truss vehicle assembly, the reel and the rotating joint of the hose reel protrude outward from the truss along the same side, and the hydraulic oil delivery hose wound on the hose reel is connected to the auxiliary drive motor and the telescopic hydraulic cylinder via the rotating joint.

[0017] Furthermore, both ends of the truss are connected with a connecting frame for connecting to the paver, the connecting frame includes a fixed seat, a rear support rod, and a connecting seat, the fixed seat is fixedly installed on the truss, the rear end of the rear support rod is connected to the fixed seat through the connecting seat, the rear support rod extends forward of the truss, and the front end of the rear support rod is fixedly provided with a rear mounting frame for connecting to the paver, a vertical tie rod arranged downwardly and inclined toward one side of the truss is connected between the rear mounting frame and the rear end of the rear support rod, and a transverse tie rod is also arranged on the inner side of the rear support rod, the transverse tie rod is inclinedly arranged and hinged between the front end of the rear support rod and the truss;

[0018] The connecting seat is a rectangular frame structure, with a vertically arranged sliding rod provided in the connecting seat, a slider slidably provided on the sliding rod, and a fixed seat is slidably installed on the sliding rod through the slider and is fixedly connected to the truss. A vertically arranged screw rod threadedly connected to the slider is also rotatably installed on the connecting seat, and the upper end of the screw rod extends out of the connecting seat and is fixedly provided with a nut. By rotating the screw rod, the slider can be driven to move up and down along the screw rod, thereby adjusting the height of the truss and the leveling height of the trowel plate assembly.

[0019] Advantages of the present invention:

[0020] 1) Before the present invention works, first drive the two reel wheels of the double-barrel wire reel to rotate reversely through the main drive motor, where the outer reel wheel rotates clockwise and the inner reel wheel rotates counterclockwise to tension the drive cable, eliminating the need for manual cable tensioning.

[0021] 2) The height adjustment mechanism of the connecting frame of the present invention is provided with a slide bar and a slider in cooperation. The connecting frame is connected with a vertical pull rod and a horizontal pull rod. A vertical triangle is formed between the vertical pull rod and the connecting frame, and a horizontal triangle is formed between the horizontal pull rod and the connecting frame. The settings of the horizontal triangle and vertical triangle structures can effectively improve the overall stability of the leveling device, avoiding or reducing the technical problem of the truss shaking during the left-right movement of the truss assembly.

[0022] 3) The front and rear connection points of the screed plate adopt a fixed-sliding mode, which not only solves the problem of the lower bracket rotating forward and backward around the hinge point, but also ensures that during the forward and backward swing of the upper bracket driven by the auxiliary drive motor, the screed plate can be driven by the lower bracket to perform powerful forward and backward leveling operations, ensuring the leveling effect.

[0023] 4) The present invention adds an angle adjustment mechanism for adjusting the leveling angle, enabling the screed plate to deflect a certain angle along the leveling direction during operation. When the inclined screed plate levels the concrete road surface, no moving traces will be left. The floating slurry on the concrete surface can be evenly smeared on the road surface passed by the screed plate during the leveling process and will no longer accumulate on both sides of the road surface. Description of the drawings

[0024] Figure 1 is the front view of the present invention;

[0025] Figure 2 is Figure 1 the enlarged view of part A in

[0026] Figure 3 is the three-dimensional view of the present invention;

[0027] Figure 4 is the partial schematic view of the present invention;

[0028] Figure 5 is the first three-dimensional view of the truss assembly;

[0029] Figure 6 is the second three-dimensional view of the truss assembly;

[0030] Figure 7 is the partial schematic view of the angle adjustment mechanism;

[0031] Figure 8It is a sectional view of a worm and worm gear reducer;

[0032] Figure 9 It is a perspective view of a double - drum wire winder;

[0033] Figure 10 It is a partial schematic view of a connecting frame. Detailed implementation mode Embodiment

[0034] As Figures 1 - 10 shown, the present invention discloses an adjustable concrete road surface leveling device, which includes a truss 1 arranged in the left - right direction, a track 2 arranged on the truss in the left - right direction, a trolley assembly 3 moving along the track, a traveling driving mechanism 4 for driving the trolley assembly 3 to move along the track 2, and a screed plate assembly 5 arranged below the truss 1 and connected to the trolley assembly 3. The screed plate assembly 5 is arranged in the front - rear direction, and a front - rear leveling driving mechanism 7 for driving the screed plate assembly 5 to level the concrete road surface in the front - rear direction is installed on the trolley assembly 3.

[0035] Connectors 15 for connecting to a paver are fixed at both ends of the truss 1. The connector 15 includes a fixed seat 15.1, a rear support rod 15.2, and a connecting seat 15.3. The front end of the rear support rod 15.2 is connected with a rear mounting frame 15.4 for fixedly installing with the paver. The rear end of the rear support rod 15.2 is fixedly connected with the connecting seat 15.3. A vertical pull rod 15.5 inclined downward towards one side of the truss 1 is connected between the rear mounting frame 15.4 and the rear end of the rear support rod 15.2. A cross - pull rod 15.6 is also arranged inside the rear support rod 15.2. The cross - pull rod 15.6 is inclined and hinged between the front end of the rear support rod 15.2 and the truss 1.

[0036] The connecting seat 15.3 is arranged as a rectangular frame structure. A vertical slide bar 15.7 is arranged inside the connecting seat 15.3. A slider 15.8 is slidably arranged on the slide bar 15.7. The fixed seat 15.1 is fixedly connected with the truss 1 and is installed on the slide bar 15.7 through the slider 15.8 so as to be slidable up and down. A lead screw 15.9 which is vertically arranged and thread - connected with the slider 15.7 is also rotatably installed on the connecting seat 15.3. The upper end of the lead screw 15.9 extends out of the connecting seat 15.3 and is fixedly provided with a nut. By rotating the lead screw 15.9, the slider 15.7 can be driven to move up and down along the lead screw 15.9, thereby adjusting the height of the truss 1 and the leveling height of the screed plate assembly 5.

[0037] The travel drive mechanism 4 includes a double-drum wire reel 4.1 arranged at the left end of the truss 1, and the double-drum wire reel 4.1 includes a wheel frame 4.1 fixedly mounted on the truss 1, and symmetrically arranged reels 4.2 are rotatably mounted on both sides of the wheel frame 4.1, and main drive motors 4.3 connected to the reels 4.2 in transmission are respectively mounted on the wheel frame 4.1, and drive cables 4.4 are wound on the reels 4.2. The drive cables 4.4 wound on the right reel 4.2 are connected to the truss vehicle assembly 3 via a guide wheel 4.5, and the drive cables 4.4 wound on the left reel 4.2 are connected to the truss vehicle assembly 3 via two wire wheels 4.6. The guide wheels 4.5 and the wire wheels 4.6 are both rotatably mounted on the truss vehicle 4.1, and the guide wheels 4.5 are arranged below the right reel 4.2, and the wire wheels 4.6 are respectively arranged at both ends of the truss 1 and below the double-drum wire reel 4.1.

[0038] Furthermore, travel switches 14 cooperating with the gantry assembly 3 are respectively installed at both ends of the track 2 for controlling the travel of the gantry assembly 3. The travel switch 14 is a conventional configuration in the art and will not be described in detail herein.

[0039] Before working, the main driving motor 4.3 is used to drive the two reels 4.2 of the double-drum wire reel 4.1 to rotate in reverse, wherein the outer reel 4.2 rotates clockwise and the inner reel 4.2 rotates counterclockwise, to tighten the driving cable 4.4. After tightening, the main driving motor 4.3 drives the two reels 4.2 of the double-drum wire reel 4 to rotate in the same direction according to the position, and the gantry assembly 3 is pulled to the left or right. When the gantry assembly 3 moves to both sides, the travel switch 14 is triggered. After being triggered, the double-drum wire reel 4.1 switches direction and starts to move in reverse until the travel switch 14 on the other side is triggered. This cycle is repeated to realize the left and right reciprocating smoothing action of the trowel plate 14.

[0040] The truss assembly 3 includes a truss frame 3.1, on both side walls of which guide wheels 3.2 supported on tracks are rotatably mounted, the tracks 2 are arranged at the bottom of both sides in the width direction of the truss 1, and an upper hinge frame 3.4 is rotatably mounted in the truss frame 3.1 via a rotating shaft 3.3 arranged along the left and right directions, and the lower part of the upper hinge frame 3.4 extends downwardly out of the truss frame 3.1.

[0041] The screed plate assembly 5 is hinged to the lower end of the upper hinge bracket 3.1 through two lower hinge brackets 6 in an inverted V shape. The screed plate assembly 5 includes a screed plate 5.1. At both ends of the back surface of the screed plate 5.1 (i.e., the opposite side of the working surface of the screed plate), first hinge seats 5.2 are respectively provided. A sliding joint 5.3 is provided inside the first hinge seat 5.2 at one end and can move back and forth, and a fixed joint 5.4 that can move back and forth is provided inside the first hinge seat 5.2 at the other end. Both the sliding joint 5.3 and the fixed joint 5.4 include a support 5.5. A guide shaft 5.6 parallel to the length direction of the screed plate 5.1 is provided on the support 5.5 of the sliding joint 5.3. A second hinge seat 5.7 is provided on the support 5.5 of the fixed joint 5.4. A turnbuckle 5.8 is respectively hinged between the sliding joint 5.3 and the first hinge seat 5.2 at the corresponding end, and between the fixed joint 5.4 and the first hinge seat 5.2 at the corresponding end. A pull rod 5.9 is hinged between the sliding joint 5.3 and the fixed joint 5.4. By tightening the turnbuckles 5.8 on both sides, the entire screed plate 5.1 can be tightened.

[0042] As a further description of this embodiment, the upper ends of the two lower hinge brackets 3.1 are hinged to the lower end of the upper hinge bracket 3.4. The lower end of the lower hinge bracket 6 on the same side as the sliding joint 5.3 is slidably and rotatably connected to the guide shaft 5.6 through a guide block 6.1. The lower end of the lower hinge bracket 3.1 on the same side as the fixed joint 5.4 is hinged to the second hinge seat 5.7, so that the screed plate 5.1 can rotate left and right relative to the lower hinge bracket 3.1.

[0043] The front and rear screeding drive mechanism 7 includes a sub-drive motor 7.1 installed on the truss frame. The sub-drive motor 7.1 is arranged in the left-right direction. The drive end of the sub-drive motor 7.1 is connected to a turntable 7.2. A connecting rod 7.3 is hinged between the turntable 7.2 and the lower part of the upper hinge bracket 3.4. The connecting rod 7.3 is hinged to the upper hinge bracket 3.4. The end of the connecting rod 7.3 connected to the turntable 7.2 is eccentrically arranged relative to the rotation center of the turntable 8.2.

[0044] The sub-drive motor 7.1 is used to drive the turntable 7.2 to rotate. The connecting rod 7.3 pushes and pulls the upper hinge bracket 3.1 under the drive of the turntable 7.2, thereby driving the screed plate 5.1 to perform screeding in the front and rear directions.

[0045] As a further improvement of this embodiment, an angle adjustment mechanism 9 is installed between the truss assembly 3 and the trowel assembly 5. The angle adjustment mechanism 9 is used to adjust the angle between the trowel 5.1 and the troweled road surface. The angle adjustment mechanism 9 includes a mounting frame 9.1 arranged near one side of the sliding joint 5.3. The mounting frame 9.1 is fixedly arranged on the truss assembly 3. A worm gear reduction box 9.2 and a telescopic hydraulic cylinder 9.3 are installed on the mounting frame 9.1. A worm 9.21 and a worm wheel 9.22 that mesh with each other are rotatably installed in the worm gear reduction box 9.2. One end of the worm 9.21 extends out of the housing of the worm gear reduction box 9.2. The tail end of the telescopic hydraulic cylinder 9.3 is hinged on the mounting frame 9.1, and a pulling plate 9.5 is hinged at the telescopic end. The pulling plate 9.5 The other end is fixedly connected to the protruding end of the worm 9.21, and a capstan 9.6 drivingly connected to the worm wheel 9.22 is arranged outside the worm gear reduction box 9.2, and an upper connecting rod 9.4 arranged downwardly is eccentrically fixedly connected to the capstan 9.6, and a lower connecting rod 9.5 is arranged below the upper connecting rod 9.4, and a slide groove 9.41 is arranged at the lower part of the upper connecting rod 9.4, and a sliding block 9.8 slidingly arranged in the slide groove 9.41 is connected to the upper end of the lower connecting rod 9.5, and the lower end of the lower connecting rod 9.5 is hinged to the middle part of the inner end of the sliding joint 5.3, and an opening is arranged on the lower hinge frame 6 hinged to the sliding joint 5.3, and the lower connecting rod 9.5 passes through the opening 6.1 corresponding to the lower hinge frame 6, so that the lower hinge frame 9.4 on the left side can move forward, backward, left and right relative to the lower connecting rod 9.5.

[0046] When adjusting the leveling angle of the trowel plate, the telescopic rod of the telescopic hydraulic cylinder 9.3 is retracted or extended to make the pulling plate 9.5 drive the worm 9.21, and then drive the worm wheel 9.22 to rotate, so that the capstan 9.6 rotates and drives the lower connecting rod 9.5 to swing, so that the trowel plate can adjust the angle around the hinge point.

[0047] A hose reel support 10 is also mounted on the truss 1, a hose reel 11 is mounted on the hose reel support 10, and a hydraulic oil delivery hose 16 for connecting the auxiliary drive motor 7.1 and the telescopic hydraulic cylinder 9.3 is wound on the hose reel 11. The gantry truck assembly 3 is provided with a rotary joint 13 whose axis is parallel to the axis of the hose reel 11. The reel of the hose reel 11 and the rotary joint 13 protrude outward from the gantry truck 1 along the same side. The hydraulic oil delivery hose wound on the hose reel 11 is connected to the auxiliary drive motor 7.1 and the telescopic hydraulic cylinder 9.3 via the rotary joint 13. The hose rotary joint 16 serves as a hydraulic transition connection to allow the hydraulic oil delivery hose to be regularly wound around the hose reel 5. The hose reel 5 rotates to collect and release the hydraulic hose by its own tensioning force. The auxiliary drive motor 7.1 and the telescopic hydraulic cylinder 9.3 slide left and right along the gantry truck assembly 13 when working. This structure enables the hydraulic oil delivery hose connected to the auxiliary drive motor 7.1 and the telescopic hydraulic cylinder 9.3 to follow regularly.

[0048] During the operation of the present invention, the main drive motor 4.3 drives the truss assembly 3 to reciprocate left and right along the track 2. And during the movement of the truss assembly 3, the auxiliary drive motor 7.1 drives the turntable 7.2 to rotate. The connecting rod 7.3 pushes and pulls the upper hinge 3.1 under the drive of the turntable 7.2, thereby driving the screed board 5.1 to level in the front and back directions. The newly paved concrete road surface of the slipform paver is leveled through the reciprocating movement of the screed board 7.1 in the front and back and left and right directions.

[0049] Meanwhile, the present invention adds an angle adjustment mechanism 9 for adjusting the leveling angle, so that the screed board 5.1 can deflect a certain angle along the leveling direction during the working process. The inclined screed board 5.1 will not leave moving traces during the leveling process of the concrete road surface, and the floating slurry on the concrete surface can be evenly smeared on the road surface passed by the screed board during the leveling process, and will no longer accumulate on both sides of the road surface.

Claims

1. An adjustable concrete road surface leveling device, comprising a truss arranged in the left-right direction, a track arranged on the truss in the left-right direction, a truss vehicle assembly traveling along the track, a traveling drive mechanism for driving the truss vehicle assembly to travel along the track, and a screed plate assembly arranged below the truss and movably connected to the truss vehicle assembly. The screed plate assembly is arranged in the front-rear direction, and a front-rear leveling drive mechanism for driving the screed plate assembly to level the concrete road surface in the front-rear direction is installed on the truss vehicle assembly; It is characterized in that: An angle adjustment mechanism is installed between the truss vehicle assembly and the screed plate assembly, and the angle adjustment mechanism is used to adjust the angle between the screed plate of the screed plate assembly and the leveled road surface; First hinge seats are respectively arranged at both ends of the back surface of the screed plate. A sliding joint that can move back and forth is arranged inside the first hinge seat at one end, and a fixed joint that can move back and forth is arranged inside the first hinge seat at the other end; Both the sliding joint and the fixed joint include a support. A guide shaft parallel to the length direction of the screed plate is arranged on the support of the sliding joint. A second hinge seat is arranged on the support of the fixed joint. Turnbuckle bolts are respectively hinged between the sliding joint and the corresponding first hinge seat, and between the fixed joint and the corresponding first hinge seat. A pull rod is hinged between the sliding joint and the fixed joint; the lower end of the lower hinge bracket on the same side as the sliding joint is slidably and rotatably connected to the guide shaft through a guide block, and the lower end of the lower hinge bracket on the same side as the fixed joint is hinged to the second hinge seat.

2. The adjustable concrete road surface leveling device according to claim 1, wherein: The traveling drive mechanism includes a double-drum wire winder arranged on the truss. The double-drum wire winder includes a wheel frame fixedly installed on the truss. Symmetrically arranged reel wheels are rotatably installed on both the left and right sides of the wheel frame. Main drive motors respectively drivingly connected to the reel wheels are installed on the wheel frame. Driving cables are wound on both reel wheels. The driving cable wound on one side of the reel wheel is connected to the truss vehicle assembly through a guide wheel, and the driving cable wound on the other reel wheel is connected to the truss vehicle assembly through a wire guide wheel. The guide wheel and the wire guide wheel are both rotatably installed on the truss vehicle.

3. An adjustable concrete pavement leveling device according to claim 1, characterized in that: The truss vehicle assembly includes a truss vehicle frame. Guide wheels for traveling and supporting on the track are rotatably installed on both side walls of the truss vehicle frame. An upper hinge bracket is rotatably installed inside the truss vehicle frame through a rotating shaft arranged in the left-right direction. The lower part of the upper hinge bracket extends downward out of the truss vehicle frame. The screed plate assembly is hinged to the lower end of the upper hinge bracket through two inverted V-shaped lower hinge brackets.

4. The adjustable concrete road surface smoothing device according to claim 3, characterized in that: Both the lower hinge bracket and the screed plate are hinged, so that the screed plate can rotate in the left-right direction. One side of the lower hinge bracket is simultaneously slidably connected to the screed plate in the front-rear direction.

5. The adjustable concrete road surface leveling device according to claim 1, characterized in that: The angle adjustment mechanism includes a mounting bracket arranged on the side close to the sliding joint. The mounting bracket is fixedly installed on the truss vehicle assembly. A worm and gear speed reducer and a driver for driving the worm of the worm and gear speed reducer to rotate are installed on the mounting bracket. A winch drivingly connected to the worm gear is arranged outside the worm and gear speed reducer. An upper connecting rod arranged downward is eccentrically fixedly connected to the winch. The lower end of the upper connecting rod is slidably connected to a lower connecting rod. The lower end of the lower connecting rod is hinged to the middle part of the inner side end of the sliding joint. An opening is arranged on the lower hinge bracket hinged to the sliding joint. The lower connecting rod passes through the opening of the corresponding lower hinge bracket, so that the lower hinge bracket on the same side as the lower connecting rod can move back and forth, left and right relative to the lower connecting rod.

6. The adjustable concrete road surface leveling device according to claim 5, characterized in that: The driver includes a telescopic hydraulic cylinder. The tail end of the telescopic hydraulic cylinder is hinged to the mounting frame, and the telescopic end is hinged with a pulling plate. The front end of the pulling plate is fixedly connected to the worm of the worm and gear speed reducer.

7. An adjustable concrete pavement leveling device according to claim 6, characterized in that: The front and rear leveling drive mechanism includes a secondary drive motor installed on the truss frame. The drive end of the secondary drive motor is connected with a turntable arranged in the front and rear direction. A connecting rod is hinged between the turntable and the lower part of the upper hinge frame. One end of the connecting rod connected to the turntable is eccentrically arranged relative to the rotation center of the turntable.

8. The adjustable concrete pavement leveling device according to claim 7, characterized in that: A hose reel support is also installed on the truss. A hose reel is installed on the hose reel support. A hydraulic oil delivery rubber hose for connecting the secondary drive motor and the telescopic hydraulic cylinder is wound on the hose reel. A rotary joint with an axis parallel to the axis of the hose reel is installed on the truss assembly. The reel of the hose reel and the rotary joint protrude out of the truss on the same side. The hydraulic oil delivery rubber hose wound on the hose reel is connected to the secondary drive motor and the telescopic hydraulic cylinder through the rotary joint.

9. The adjustable concrete road surface leveling device according to claim 1, wherein: Connecting frames for connecting the paver are connected to both ends of the truss. The connecting frame includes a fixed seat, a rear support rod, and a connecting seat. The fixed seat is fixedly installed on the truss. The rear end of the rear support rod is connected to the fixed seat through the connecting seat. The rear support rod extends forward out of the truss. A rear mounting frame for connecting the paver is fixedly arranged at the front end of the rear support rod. A vertical pull rod inclined downward to one side of the truss is connected between the rear mounting frame and the rear end of the rear support rod. A cross rod is also arranged inside the rear support rod. The cross rod is inclined and is hinged between the front end of the rear support rod and the truss. The connecting seat is of a rectangular frame structure. A sliding rod arranged vertically is arranged inside the connecting seat. A slider is slidably arranged on the sliding rod. The fixed seat is slidably installed on the sliding rod through the slider and can slide up and down, and is fixedly connected to the truss at the same time. A lead screw arranged vertically and threadedly connected to the slider is also rotatably installed on the connecting seat. The upper end of the lead screw extends out of the connecting seat and is fixedly provided with a nut. By rotating the lead screw, the slider can be driven to move up and down along the lead screw, so as to adjust the height of the truss and the leveling height of the screed assembly.

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