Self-feedback plastic track construction device based on laser measurement

Abstract

The invention relates to the field of plastic track construction, and particularly discloses a self-feedback plastic track construction device based on laser measurement, which comprises a mounting frame fixedly connected with a tractor and driven by the tractor to move along a construction route, and two warning lamps are mounted on the mounting frame; the scraping assembly and the scraping plate are attached to laying raw materials of a plastic track, the scraping plate scrapes the plastic raw materials to be flat along with movement of the tractor, when the plastic raw materials topple too much or too little on a track roadbed and protrude or sink, the laser measuring module detects that the scraping plate inclines, the reciprocating assembly drives the scraping plate to reciprocate, and the scraping plate is driven by the reciprocating assembly to reciprocate. Meanwhile, the downward pressing air cylinder on the protruding side of the road surface is controlled to extend, downward pressing force on the corresponding side of the scraping plate is increased, the protruding part is stricken, the downward pressing air cylinder on the concave side of the road surface is controlled to shorten, downward pressing force on the corresponding side of the scraping plate is reduced, and at the moment, the concave position of the road surface is filled with raw materials to be stricken in cooperation with reciprocating motion of the scraping plate.

Description

Technical Field

[0001] This invention relates to the field of plastic running track construction, specifically to a self-feedback plastic running track construction device based on laser measurement. Background Technology

[0002] The key to the quality of plastic running track paving lies in the flatness control of the base layer and surface layer. In traditional construction, manual scraping or simple machinery is often used for leveling. This method is highly dependent on the operator's experience and it is difficult to accurately control the pressure and posture of the scraper on the ground. Uneven material accumulation or slight undulations in the roadbed can easily lead to wavy undulations or local depressions on the surface after scraping. Although some traction-type leveling equipment has emerged in recent years, most of them lack real-time detection and feedback adjustment capabilities. They cannot dynamically respond to changes in the layer thickness during construction. When there is more material on one side and it protrudes, the scraper is easily lifted, resulting in poor scraping in that area. On the other hand, where there is less material, insufficient pressure can cause depressions, affecting the overall quality of the plastic running track construction. Summary of the Invention

[0003] The purpose of this invention is to provide a self-feedback plastic running track construction device based on laser measurement, which overcomes the above-mentioned defects in the prior art.

[0004] A self-feedback plastic running track construction device based on laser measurement according to the present invention includes: The mounting frame is fixedly connected to the tractor vehicle, which moves it along the construction route. Two warning lights are installed on the mounting frame. A connecting frame, comprising a connecting plate and lifting cylinders, wherein two lifting cylinders are provided and fixed on the mounting frame, the connecting plate is provided on the lower side of the mounting frame, and both ends of the connecting plate are fixed to the lower ends of the piston rods of the two lifting cylinders; A leveling assembly is installed on a connecting frame. The leveling assembly includes a horizontal bar, a laser measurement module, a leveling module, and a leveling adjustment module. The leveling module includes a scraper and a reciprocating motion assembly. Two reciprocating motion assemblies are provided and fixed to the scraper. The horizontal adjustment module is provided in two parts and fixed at both ends of the horizontal rod. The horizontal adjustment module includes a pressure rod, a pressure spring and a downward pressure cylinder. The lower end of the pressure rod is rotatably connected to a fixed plate connected to the reciprocating motion component. The downward pressure cylinder is located on the upper side of the pressure rod. The pressure spring is located between the downward pressure cylinder and the pressure rod. The laser measurement module has two units, located at both ends of the horizontal rod, to measure the tilt of the scraper and feed the results back to the horizontal adjustment module. This controls the extension and retraction of the piston rod of the pressing cylinder, thereby adjusting the deformation of the pressure spring and adjusting the pressure of the scraper end on the plastic track. Simultaneously, it controls the reciprocating motion component to drive the scraper to reciprocate in the horizontal direction, thus leveling the plastic track.

[0005] In a further technical solution, the mounting frame includes a mounting plate and a mounting tube. The mounting tube is fixed to the front end of the mounting plate and is arranged parallel to the connecting plate. The mounting plate has mounting holes, and the mounting plate is installed on the tractor by bolts passing through the mounting holes.

[0006] In a further technical solution, the connecting frame also includes a connecting member and a connecting block. The connecting block is fixed on the horizontal bar and is fixedly connected to the connecting member by bolts. The connecting plate is composed of a vertical part on the front side and a horizontal part on the upper side to form a "Γ" shape. The connecting member is fixed on the vertical part of the connecting plate, and the horizontal part of the connecting plate is fixed to the lower end of the piston rod of the two lifting cylinders.

[0007] A further technical solution includes a reciprocating motion assembly comprising a guide seat, a shaft plate, a motor, a lead screw nut, and a fixing block. The lower end face of the guide seat has an upwardly recessed guide groove with openings at both ends. The lead screw nut is slidably connected within the guide groove. Two shaft plates are provided and fixed to the front and rear ends of the guide seat, respectively. A reciprocating lead screw is internally threaded onto the lead screw nut. The front and rear ends of the reciprocating lead screw are rotatably connected to the front and rear shaft plates, respectively. The motor is fixed to one of the shaft plates. The reciprocating lead screw is fixedly connected to the output shaft of the motor. The fixing block is fixed to the lower end face of the lead screw nut, and the scraper is fixed to the two fixing blocks.

[0008] In a further technical solution, the fixing plate is fixed to the upper surface of the guide seat, and two front-to-back symmetrical first reinforcing plates are also fixed to the upper surface of the guide seat.

[0009] In a further technical solution, the horizontal adjustment module also includes a slider seat, a slider, and a return spring. The slider is slidably connected to the slider seat. The pressure rod passes through the slider upward and is slidably connected to it. A cylinder seat is fixed to the lower end face of the downward pressure cylinder. A circumferentially evenly distributed guide rod is fixed between the cylinder seat and the slider. The piston rod of the downward pressure cylinder passes through the cylinder seat downward and is slidably connected to it. A spring seat is fixed to the upper end of the pressure rod. A pressure plate is provided between the spring seat and the cylinder seat. The guide rod passes through the pressure plate and is slidably connected to it. The upper and lower ends of the pressure spring are fixedly connected to the pressure plate and the spring seat, respectively.

[0010] In a further technical solution, a downwardly recessed groove is formed in the upper end face of the slider seat, and the front and rear ends of the groove are open. A vertical through groove is formed in the bottom wall of the groove. The slider is slidably connected in the groove. End plates are fixed at the front and rear ends of the horizontal rod. The slider seat is fixed on the end plates. The front and rear ends of the reset spring are respectively fixed between the slider and the end plates. The pressure rod passes through the through groove and can slide back and forth in it.

[0011] In a further technical solution, the laser measurement module includes a laser measuring instrument and a reflective sticker. The reflective sticker is fixed on the upper surface of the fixed plate, and the laser measuring instrument is set on the upper side of the reflective sticker and fixed on the horizontal bar. The laser measuring instrument measures the distance between the fixed plate and the horizontal bar to determine the degree of tilt of the scraper.

[0012] The beneficial effects of this invention are as follows: This invention moves along the path of the plastic track by being towed by a tractor. After the lifting cylinder is activated, it drives the connecting plate to press down, so that the scraper adheres to the paving material of the plastic track. As the tractor moves, the scraper flattens the plastic material. When too much or too little plastic material is poured on the track foundation, resulting in bulges or depressions, the laser measurement module detects that the scraper is tilted. The reciprocating motion component drives the scraper to reciprocate. At the same time, it controls the extension of the pressing cylinder on the side of the road surface that is bulging, increasing the downward pressure on the corresponding side of the scraper to flatten the bulging part. It controls the shortening of the pressing cylinder on the side of the road surface that is depressed, reducing the downward pressure on the corresponding side of the scraper. At this time, material is filled into the depression of the road surface, which is then flattened in conjunction with the reciprocating motion of the scraper. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a top view of the present invention; Figure 3 This is the present invention. Figure 2 Schematic diagram of the cross section of AA; Figure 4 This is the present invention. Figure 3 Enlarged view of point C in the middle; Figure 5 This is the present invention. Figure 2 A partial sectional view of the middle section of BB; Figure 6 This is a schematic diagram of the horizontal adjustment module in this invention; Figure 7 This is an exploded view of the present invention; Figure 8 This is the present invention. Figure 7 Enlarged view of point D; Figure 9 This is a schematic diagram of the reciprocating motion component in this invention.

[0014] In the picture: 4. Horizontal adjustment module; 6. Reciprocating motion assembly; 10. Mounting plate; 20. Mounting tube; 21. Lifting cylinder; 22. Warning light; 23. Connecting piece; 24. Third reinforcing plate; 25. Connecting plate; 26. Connecting block; 30. Horizontal bar; 31. End plate; 40. Downward pressing cylinder; 41. Cylinder seat; 42. Pressure plate; 43. Guide rod; 44. Pressure rod; 45. Spring seat; 46. Pressure spring; 47. Slider; 4 8. Slider seat; 481. Slide groove; 482. Through groove; 49. Return spring; 50. Scraper; 60. Guide seat; 61. Guide groove; 62. First reinforcing plate; 63. Reciprocating lead screw; 64. Shaft plate; 65. Motor; 66. Lead screw nut; 661. Cover plate; 662. Shuttle; 663. Empty groove; 67. Fixing block; 70. Fixing plate; 71. Second reinforcing plate; 80. Laser measuring instrument; 81. Reflective sticker. Detailed Implementation

[0015] In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are merely for the purpose of simplifying the description of the present invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0016] To make the objectives and advantages of this invention clearer, the invention will be specifically described below with reference to embodiments. It should be understood that the following text is only used to describe one or more specific embodiments of the invention and does not strictly limit the scope of protection specifically claimed by the invention. As used herein, terms before and after are not limited to their strict geometric definitions, but include tolerances for reasonable and inconsistent machining or human errors. The specific features of a laser-based self-feedback plastic running track construction device are described in detail below: An embodiment of the present invention: Reference Figures 1-9 This invention provides a self-feedback plastic running track construction device based on laser measurement, comprising: The mounting frame is fixedly connected to the tractor vehicle, which moves it along the construction route. The mounting frame is equipped with two warning lights 22, which are red and yellow. The internal circuits are independent. The upper one is red and the lower one is yellow. When the red LED light is on, it indicates that there is a bulge on the road surface on the corresponding side. When the yellow LED light is on, it indicates that there is a depression on the road surface on the corresponding side. The connecting frame includes a connecting plate 25 and a lifting cylinder 21. Two lifting cylinders 21 are provided and fixed on the mounting frame. The connecting plate 25 is located on the lower side of the mounting frame, and both ends of the connecting plate 25 are fixed to the lower ends of the piston rods of the two lifting cylinders 21. The leveling assembly is installed on the connecting frame. The leveling assembly includes a horizontal bar 30, a laser measurement module, a leveling module, and a horizontal adjustment module 4. The horizontal bar 30 has an I-shaped cross section. The leveling module includes a scraper 50 and a reciprocating motion assembly 6. The scraper 50 consists of a horizontal part and vertical parts fixed on both sides of the horizontal part. The cross section of the scraper 50 is U-shaped. A horizontal plate is fixed between the two vertical parts of the scraper 50 to increase the strength of the scraper 50. The connection between the horizontal and vertical parts of the scraper 50 is arc-shaped, which allows it to scrape plastic raw materials more smoothly. Two reciprocating motion assemblies 6 are provided and fixed on the two vertical parts of the scraper 50. The horizontal adjustment module 4 is provided in two parts and fixed at both ends of the horizontal rod 30. The horizontal adjustment module 4 includes a pressure rod 44, a pressure spring 46 and a downward pressure cylinder 40. The lower end of the pressure rod 44 is rotatably connected to a fixed plate 70 connected to the reciprocating motion component 6. The lower end face of the fixed plate 70 is vertically fixed with a second reinforcing plate 71 to increase the bending strength of the fixed plate 70. The downward pressure cylinder 40 is located on the upper side of the pressure rod 44, and the pressure spring 46 is located between the downward pressure cylinder 40 and the pressure rod 44. The laser measurement module has two units, located at both ends of the horizontal rod 30, to measure the tilt of the scraper 50 and feed the results back to the horizontal adjustment module. This controls the extension and retraction of the piston rod of the pressing cylinder 40, thereby adjusting the deformation of the pressure spring 46 and adjusting the pressure of the scraper 50 on the plastic track. At the same time, it controls the reciprocating motion component 6 to drive the scraper 50 to reciprocate in the horizontal direction, thus leveling the plastic track.

[0017] In this embodiment, the laser measurement module, reciprocating motion component 6, lifting cylinder 21, warning light 22, and horizontal adjustment module 4 are coordinated and controlled by a PLC.

[0018] Specifically, the mounting frame includes a mounting plate 10 and a mounting tube 20. The mounting tube 20 is made of a square hollow tube to reduce the weight of the mounting frame. The mounting tube 20 is fixed to the front end of the mounting plate 10 and is arranged parallel to the connecting plate 25. The mounting plate 10 has mounting holes. The mounting plate 10 is installed on the tractor by bolts passing through the mounting holes. The tractor mentioned in this invention can be the tractor of a laser leveling machine. The PLC, air pump, control valve and other components required in this invention can be installed on the tractor.

[0019] Specifically, the connecting frame also includes a connector 23 and a connecting block 26. The connecting block 26 is fixed on the horizontal bar 30 and is fixedly connected to the connector 23 by bolts. The connecting plate 25 is composed of a vertical part on the front side and a horizontal part on the upper side to form a "Γ" shape. Multiple third reinforcing plates 24 are fixed on the outer surface of the connecting plate 25 and are equidistantly distributed along its length. The third reinforcing plates 24 are set perpendicular to the surface of the connecting plate 25. Ribs that connect the horizontal and vertical parts are fixed on the inner side of the connecting plate 25 to increase the strength of the connecting plate 25. The connector 23 is fixed on the vertical part of the connecting plate 25, and the horizontal part of the connecting plate 25 is fixed to the lower end of the piston rod of the two lifting cylinders 21.

[0020] Specifically, the reciprocating motion assembly 6 includes a guide seat 60, a shaft plate 64, a motor 65, a lead screw nut 66, and a fixing block 67. The lower end face of the guide seat 60 has an upwardly recessed guide groove 61 with openings at both ends. The lead screw nut 66 is slidably connected within the guide groove 61. Two shaft plates 64 are provided and fixed to the front and rear ends of the guide seat 60 respectively. A reciprocating lead screw 63 is internally threaded onto the lead screw nut 66. The front and rear ends of the reciprocating lead screw 63 are rotatably connected to the front and rear shaft plates 64 respectively. The motor 65 is fixed to one of the shaft plates 64, and the reciprocating lead screw 63 is fixedly connected to the output shaft of the motor 65. The fixing block 67 is fixed to the lower end face of the lead screw nut 66, and the scraper 50 is fixed to the two fixing blocks 67. The lead screw nut 66 has an internal opening... The upper end of the slot 663 is open. The upper end of the slot 663 expands radially outward to form a step with the lower part of the slot 663. A cover plate 661 is fixed in the stepped part of the slot 663 by bolts. A sliding shuttle 662 is rotatably connected to the lower end face of the cover plate 661. The sliding shuttle 662 is embedded in the bidirectional threaded groove on the reciprocating screw 63 and can slide along the threaded groove on the reciprocating screw 63. The ends of the bidirectional threaded groove on the reciprocating screw 63 are connected. The connection part of the bidirectional thread is smoothly transitioned. When the reciprocating screw 63 rotates, the sliding shuttle 662 moves along one of the threads to the end, slides along the transition section of the connection part and rotates to the other thread, thereby realizing the reciprocating movement of the sliding shuttle 662 in the bidirectional thread, thereby driving the screw nut 66 to reciprocate along the reciprocating screw 63.

[0021] Specifically, the fixing plate 70 is fixed to the upper surface of the guide seat 60, and two front-to-back symmetrical first reinforcing plates 62 are also fixed to the upper surface of the guide seat 60. The first reinforcing plates 62 are designed to increase the bending strength of the guide seat 60.

[0022] Specifically, the horizontal adjustment module also includes a slider seat 48, a slider 47, and a return spring 49. The slider 47 is slidably connected to the slider seat 48. The pressure rod 44 passes through the slider 47 upward and is slidably connected to it. The lower end face of the pressing cylinder 40 is fixed with a cylinder seat 41. A guide rod 43 is circumferentially evenly distributed between the cylinder seat 41 and the slider 47. The piston rod of the pressing cylinder 40 passes through the cylinder seat 41 downward and is slidably connected to it. The upper end of the pressure rod 44 is fixed with a spring seat 45. A pressure plate 42 is provided between the spring seat 45 and the cylinder seat 41. The guide rod 43 passes through the pressure plate 42 and is slidably connected to it. The upper and lower ends of the pressure spring 46 are fixedly connected to the pressure plate 42 and the spring seat 45, respectively.

[0023] Specifically, the upper surface of the slider seat 48 has a downwardly recessed groove 481 with an inverted "T" shape in cross-section. The slider 47 has grooves on both sides parallel to its sliding direction, making its cross-section "I". The upper end of the groove 481 is embedded in the groove, thereby enabling the slider 47 to slide smoothly along the groove 481. The front and rear ends of the groove 481 are open. The bottom wall of the groove 481 has a vertical through groove 482. The slider 47 is slidably connected in the groove 481. The front and rear ends of the horizontal rod 30 are fixed with end plates 31. The slider seat 48 is fixed on the end plates 31. The front and rear ends of the return spring 49 are fixed between the slider 47 and the end plates 31, respectively. The pressure rod 44 passes through the through groove 482 and can slide back and forth in it. The setting of the return spring 49 ensures that when the scraper 50 is in a horizontal state, the distance between the two sliders 47 and the corresponding side end plates 31 is consistent.

[0024] Specifically, the laser measurement module includes a laser measuring instrument 80 and a reflective sticker 81. The reflective sticker 81 is fixed on the upper surface of the fixed plate 70. The laser measuring instrument 80 is set on the upper side of the reflective sticker 81 and fixed on the horizontal bar 30. The laser measuring instrument 80 measures the distance between the fixed plate 70 and the horizontal bar 30 to determine the degree of inclination of the scraper 50.

[0025] In this embodiment, the laser measuring instrument 80 preferably uses a laser ranging sensor of model KJT-TLS-10C-TR1, which has the characteristics of high measurement accuracy and fast response speed, and its output signal is an NPN type digital level signal.

[0026] PLCs are preferably small controllers with integrated digital input / output (DI / DO) modules (such as the Siemens S7-1200 series).

[0027] In this embodiment, both the lifting cylinder 21 and the pressing cylinder 40 are connected to the control air source through a two-position five-way solenoid valve, and the working voltage of the solenoid valve coil is DC 24V.

[0028] The solenoid valve, warning light 22, motor 65, and laser measuring instrument 80 are connected to the PLC. The PLC controls the extension and retraction of the pressure cylinder 40 and the opening and closing of the motor 65 based on the values ​​measured by the laser measuring instrument 80.

[0029] The electrical connections of the various components are as follows: The positive power terminals (brown wires) of the two KJT-TLS-10C-TR1 laser rangefinders are connected to the DC 24V output terminal provided by the PLC module; the negative power terminals (blue wires) are connected to the common ground terminal (COM) of the PLC; and the signal output lines (black wires) are connected to the two high-speed digital input points of the PLC (defined as X0 and X1).

[0030] The PLC's digital output points Y0 and Y1 are connected to the extension and retraction coils of the solenoid valve controlling the front-side pressing cylinder 40, respectively; Y2 and Y3 are connected to the solenoid valve coil controlling the rear-side pressing cylinder 40; and Y4 and Y5 are connected to the solenoid valve coil controlling the lowering and raising of the lifting cylinder 21.

[0031] PLC digital output points Y6 and Y7 are connected to the red and yellow LEDs of the front warning light 22, respectively; Y10 and Y11 are connected to the red and yellow LEDs of the rear warning light 22, respectively.

[0032] The PLC's digital output point Y12 is connected to the relay or contactor that controls the motor 65 in the reciprocating motion assembly 6, in order to control the start and stop of the motor 65.

[0033] The invention, together with the tractor, is moved to the path of the plastic track. After the plastic raw material is poured onto the roadbed, the tractor moves along the path of the plastic track, thereby driving the scraper 50 to scrape the plastic raw material along the path of the track.

[0034] To increase construction efficiency, multiple construction devices provided by this invention can be set on the runway width and interlocked in the runway direction, so that the edges of the paths scraped by multiple scrapers 50 overlap, so that the runway can be laid in one go and the overall flatness of the runway can be ensured.

[0035] The specific construction process of the construction device provided in this application is as follows: When the present invention is located on the roadbed, the plastic raw material is poured between the construction device provided by the present invention and the tractor.

[0036] After the device is powered on, the system is initialized first. The lifting cylinder 21 is raised by the PLC to make the scraper 50 completely lift off the ground.

[0037] The operator manually adjusts the scraper 50 to an ideal horizontal position. Then, based on the thickness of the plastic paving on the track, the PLC controls the piston rod of the lifting cylinder 21 to extend downward, causing the connecting plate 25 to move downward, which in turn drives the scraper 50 to move downward to the specified height. At this time, the scraper 50 presses down on the plastic material, the pressure rod 44 moves upward a certain distance, the pressure spring 46 is partially compressed, and the return springs 49 on both sides are in a relaxed state.

[0038] At this point, the calibration program is initiated. The PLC records the initial distance values ​​L0 and R0 measured by the two laser measuring instruments 80 before and after the test, and sets these values ​​as the standard reference values ​​for the horizontal state of the scraper. Simultaneously, the allowable deviation threshold for flatness is set in the PLC. .

[0039] After calibration, construction begins. The tractor moves forward at a constant speed, driving the entire device forward. The scraper 50 moves synchronously along the paving path, thereby scraping the plastic material dumped on the roadbed. During this period, the PLC reads the measured values ​​of the laser measuring instruments 80 on both the front and rear sides in real time at a fixed sampling period. and That is, the distance between the reflective sticker 81 and the corresponding side laser measuring instrument 80.

[0040] If satisfied and If the PLC determines that the scraper 50 is in a horizontal state, the system maintains the current state of all cylinders, all warning lights 22 are off, and the device continues to perform the leveling operation.

[0041] First embodiment: If the plastic raw material is poured evenly, the scraper 50 will be in a horizontal or nearly horizontal state. The scraper 50 will compact and level the plastic raw material. At this time, the values ​​measured by the two laser measuring instruments 80 will be consistent with the standard values, or the difference from the standard values ​​will be within the allowable deviation threshold. Inside.

[0042] Second embodiment: When plastic raw materials are poured unevenly, taking an example of excessive plastic raw materials on the front side of the road (the front side of the road bulges), for ease of understanding, it should be noted that the terms "front" and "rear" in this embodiment are based on the attached... Figure 1 The directions and positional relationships shown refer to the following in actual construction: the "front" side of the road surface corresponds to the road surface closer to the inside of the runway, and the "rear" side of the road surface corresponds to the road surface closer to the outside of the runway. When there is too much plastic material on the front side of the road: the front end of the scraper 50 is lifted, causing the measurement value of the front laser measuring instrument 80 to be affected. < And the difference exceeds the threshold The PLC detects a bulge on the front side and then executes the following automatic control sequence: S1. Control the solenoid valve of the front pressing cylinder 40 (Y0 output high level) to extend its piston rod, which increases the compression amount through the pressure spring 46 and increases the downward pressure at the front end of the scraper 50.

[0043] S2. At the same time, the red warning light on the front (Y6 output high level) is triggered to light up, indicating to the operator that there is a protrusion on the front.

[0044] S3. Start the motor 65 (Y12 output high level) of the reciprocating motion component 6 to drive the scraper 50 to perform horizontal reciprocating motion and concentrate on scraping the raw material in the raised parts.

[0045] S4, PLC continuous monitoring value, until it returns to Within the designated area. Subsequently, the PLC deactivated the alarm, stopped motor 65, and restored the front-side downward pressure cylinder 40 to its initial pressure state. The warning light 22 went out, and the device resumed its normal leveling process.

[0046] Third embodiment: When the plastic material is poured unevenly, taking the case of insufficient plastic material on the rear side of the road (rear side road depression) as an example, for ease of understanding, it should be noted that the terms "front" and "rear" in this embodiment are based on the attached... Figure 1 The directions and positional relationships shown refer to the following in actual construction: the "front" side of the road surface corresponds to the road surface closer to the inside of the track, and the "rear" side of the road surface corresponds to the road surface closer to the outside of the track. When there is insufficient material on the rear side of the road surface (sinking): the rear end of the scraper 50 sinks, causing... < And the difference exceeds the threshold The PLC detects a dent on the rear side and then executes the following control sequence: S1. Control the solenoid valve of the rear pressing cylinder 40 (Y3 output high level) to retract its piston rod, reduce the downward pressure of the rear scraper 50, and prevent it from over-compacting the already scarce raw materials in the depression.

[0047] S2. At the same time, the yellow warning light on the rear (Y11 output high level) is triggered to light up, indicating to the operator that there is a dent on the rear and raw materials need to be added.

[0048] S3. The operator stops the tractor as instructed and manually adds raw materials to the depression. At the same time, the PLC can start the motor 65 to drive the scraper 50 to reciprocate to help level the added raw materials.

[0049] S4. After the raw materials are replenished and leveled, the PLC monitors... Once the value returns to the normal range, stop motor 65, restore the rear-side downward cylinder 40 to its initial state, and turn off warning light 22, then continue construction.

[0050] The PLC can also be connected to a human-machine interface (HMI) to display the measurement values, deviation status, and system alarm information on both sides in real time, and thresholds can be manually set. Modifying cylinder action parameters, etc.

[0051] Furthermore, a pressure reducing valve and a speed regulating valve can be added to the pneumatic circuit to precisely adjust the cylinder's movement speed and output force, making the leveling action smoother and more precise.

[0052] Those skilled in the art will appreciate that various modifications to the above embodiments can be made without departing from the overall spirit and concept of the present invention. All such modifications fall within the protection scope of the present invention. The protection scheme of the present invention is defined by the appended claims.

Claims

1. A self-feedback plastic track construction device based on laser measurement, characterized in that, include: The mounting frame is fixedly connected to the tractor and is driven by the tractor to move along the construction route. Two warning lights (22) are installed on the mounting frame. The connecting frame includes a connecting plate (25) and a lifting cylinder (21). Two lifting cylinders (21) are provided and fixed on the mounting frame. The connecting plate (25) is located on the lower side of the mounting frame. Both ends of the connecting plate (25) are fixed to the lower ends of the piston rods of the two lifting cylinders (21). A leveling assembly is installed on a connecting frame. The leveling assembly includes a horizontal bar (30), a laser measurement module, a leveling module, and a horizontal adjustment module (4). The leveling module includes a scraper (50) and a reciprocating motion assembly (6). Two reciprocating motion assemblies (6) are provided and fixed on the scraper (50). The horizontal adjustment module (4) is provided in two parts and fixed at both ends of the horizontal rod (30). The horizontal adjustment module (4) includes a pressure rod (44), a pressure spring (46) and a downward pressure cylinder (40). The lower end of the pressure rod (44) is rotatably connected to a fixed plate (70) connected to the reciprocating motion component (6). The downward pressure cylinder (40) is located on the upper side of the pressure rod (44). The pressure spring (46) is located between the downward pressure cylinder (40) and the pressure rod (44). The laser measurement module has two units located at both ends of the horizontal rod (30) to measure the tilt of the scraper (50) and feed the results back to the horizontal adjustment module. This controls the extension and retraction of the piston rod of the pressure cylinder (40) to adjust the deformation of the pressure spring (46), thereby adjusting the pressure of the scraper (50) end on the plastic track. At the same time, the reciprocating motion component (6) is controlled to drive the scraper (50) to reciprocate in the horizontal direction, thereby achieving the scraping and leveling of the plastic track.

2. The self-feedback plastic track construction device based on laser measurement according to claim 1, characterized in that, The mounting bracket includes a mounting plate (10) and a mounting tube (20). The mounting tube (20) is fixed to the front end of the mounting plate (10) and is arranged parallel to the connecting plate (25). The mounting plate (10) has mounting holes. The mounting plate (10) is installed on the tractor by bolts passing through the mounting holes.

3. The self-feedback plastic track construction device based on laser measurement according to claim 1, characterized in that, The connecting frame also includes a connector (23) and a connecting block (26). The connecting block (26) is fixed on the horizontal bar (30). The connecting block (26) is fixedly connected to the connector (23) by bolts. The connecting plate (25) is composed of a vertical part on the front side and a horizontal part on the upper side to form a "Γ" shape. The connector (23) is fixed on the vertical part of the connecting plate (25). The horizontal part of the connecting plate (25) is fixed to the lower end of the piston rod of the two lifting cylinders (21).

4. The self-feedback plastic track construction device based on laser measurement according to claim 1, characterized in that, The reciprocating motion assembly (6) includes a guide seat (60), a shaft plate (64), a motor (65), a lead screw nut (66), and a fixing block (67). The guide seat (60) has an upwardly recessed guide groove (61) on its lower end face. The guide groove (61) is open at both ends. The lead screw nut (66) is slidably connected in the guide groove (61). There are two shaft plates (64) and they are respectively fixed on the front and rear ends of the guide seat (60). The lead screw nut (66) is internally threaded with a reciprocating lead screw (63). The front and rear ends of the reciprocating lead screw (63) are rotatably connected to the shaft plates (64) on the front and rear sides respectively. The motor (65) is fixed on one of the shaft plates (64). The reciprocating lead screw (63) is fixedly connected to the output shaft of the motor (65). The fixing block (67) is fixed on the lower end face of the lead screw nut (66). The scraper (50) is fixed on the two fixing blocks (67).

5. The self-feedback plastic track construction device based on laser measurement according to claim 4, characterized in that, The fixing plate (70) is fixed to the upper surface of the guide seat (60), and two front-to-back symmetrical first reinforcing plates (62) are also fixed to the upper surface of the guide seat (60).

6. The self-feedback laser measuring based plastic track construction device according to claim 1, wherein, The horizontal adjustment module (4) also includes a slider seat (48), a slider (47), and a reset spring (49). The slider (47) is slidably connected to the slider seat (48). The pressure rod (44) passes through the slider (47) upward and is slidably connected to it. The lower end face of the pressing cylinder (40) is fixed with a cylinder seat (41). A guide rod (43) is circumferentially evenly distributed between the cylinder seat (41) and the slider (47). The piston rod of the pressing cylinder (40) passes through the cylinder seat (41) downward and is slidably connected to it. The upper end of the pressure rod (44) is fixed with a spring seat (45). A pressure plate (42) is provided between the spring seat (45) and the cylinder seat (41). The guide rod (43) passes through the pressure plate (42) and is slidably connected to it. The upper and lower ends of the pressure spring (46) are fixedly connected to the pressure plate (42) and the spring seat (45) respectively.

7. The self-feedback plastic track construction device based on laser measurement according to claim 6, characterized in that, The upper surface of the slider seat (48) is provided with a downwardly recessed groove (481). The groove (481) is open at both ends. The bottom wall of the groove (481) is provided with a vertical through groove (482). The slider (47) is slidably connected in the groove (481). The horizontal rod (30) is fixed with end plates (31) at both ends. The slider seat (48) is fixed on the end plates (31). The return spring (49) is fixed between the slider (47) and the end plates (31) at both ends. The pressure rod (44) passes through the through groove (482) and can slide back and forth in it.

8. The self-feedback laser measuring based plastic track construction device according to claim 6, wherein, The laser measurement module includes a laser measuring instrument (80) and a reflective sticker (81). The reflective sticker (81) is fixed on the upper surface of the fixed plate (70). The laser measuring instrument (80) is set on the upper side of the reflective sticker (81) and fixed on the horizontal bar (30). The laser measuring instrument (80) measures the distance between the fixed plate (70) and the horizontal bar (30) to determine the degree of inclination of the scraper (50).

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