Intelligent laying machine for prefabricated track slabs

Abstract

A connecting mechanism is installed on the rear portion of a machine frame and used for being connected with a flat-bed trailer for loading a prefabricated track plate and driving the machine frame and the flat-bed trailer to move synchronously, a horizontal guide rail is horizontally arranged in the advancing direction of the machine frame, and a walking mechanism is installed on the horizontal guide rail and can move in a reciprocating mode along the horizontal guide rail. The lifting tool module is mounted on the walking mechanism, can do lifting motion and transverse rotation relative to the walking mechanism, can penetrate through the rack under the driving of the walking mechanism to lift the prefabricated track plate from the flat-bed trailer, and releases the lifted prefabricated track plate to the position over the pavement to be paved; according to the intelligent laying machine for the prefabricated road plate, the flat-bed trailer loaded with the prefabricated road plate is driven by the driving mechanism to move synchronously with the rack, the prefabricated road plate on the flat-bed trailer is lifted to the position over a road surface to be laid through the lifting tool module to be released, and the lifting tool module has the multiple functions of intelligent leveling, locking, vibrating, lifting and the like; therefore, the requirement for efficient laying of the prefabricated road plate is met, and high-quality intelligent operation is achieved.

Description

Technical Field

[0001] The invention relates to an intelligent paving machine for prefabricated road slabs, which is suitable for the fields of road construction, maintenance and industrial floor paving. Background Art

[0002] With the development of transportation and civil aviation, the original airport design standard load requirements have increased, and the long-term use of the field road has caused damage, such as road slab fractures, broken joints, and potholes. With the warming of the climate, the temperature has risen, causing the structural bearing capacity to decay and the performance to decrease. The most common practice for large-scale maintenance of airport concrete pavements, especially to increase the load of the road slabs, is to add a certain thickness of cement or asphalt concrete overlay layer on the surface of the old road slab, which is usually called "covering" or "overlay". When overlaying asphalt on the airport pavement, the surface layer is generally divided into three layers, from top to bottom, they are the upper layer, the middle layer, and the lower layer, with a total thickness of about 20 cm. One typical overlay structure is 5 cm thick SMA-13 ​​asphalt concrete + 6.5 cm thick AC-13 + 6.5 cm thick AC-13 from top to bottom, with a total thickness of 18 cm. Asphalt concrete overlay needs to be completed in three stages, with a long cycle and complicated process. At the same time, due to the material properties of asphalt, after a period of operation at the airport, it is easy to loosen, water damage and wheel rutting, and even serious peeling diseases, which poses certain safety hazards. For example, an airport in central China has a 3200m×45m runway, and a 21cm asphalt blanket is laid, with a total area of ​​144,000 square meters. The construction was suspended for 126 days. Soon after it was put into operation, it began to suffer from diseases such as bulging, shifting, and the whole layer being lifted, which seriously threatened the safe operation of the airport. The use of cement concrete blanket, due to the long hardening and solidification time of cement concrete, requires a curing cycle of at least 7 to 14 days, and it is impossible to achieve non-stop construction; the temperature of asphalt overlay is usually 160℃, and the construction temperature of cement concrete overlay should be controlled above 5℃ and below 35℃. In winter, low-temperature cement concrete cannot be fully hydrated, and asphalt cannot be constructed (the construction cycle in the north is short). In addition, when asphalt is overlaid, it cannot penetrate into the pores and cracks of concrete, resulting in low bonding strength, and the material strength and elastic modulus are far apart; when concrete is overlaid, the new and old layers cannot be superimposed. Therefore, neither can bond with the original pavement to form an integrated overall performance. With the advancement of science and technology, the new polymer materials preferably involved in this technology can penetrate into the pores and cracks of concrete, and play a role in penetration repair and strong bonding of the original pavement. At the same time, in order to minimize the impact on the normal operation of the airport, environmental protection, and rapid large-scale delivery, prefabricated airport road slabs came into being.

[0003] Regarding the laying of prefabricated road slabs, on the one hand, faced with a large number of prefabricated road slabs, how to improve the laying efficiency as much as possible to meet the requirements of non-stop construction has always been the primary consideration for the laying of prefabricated road slabs. On the other hand, hoisting is generally required when laying prefabricated road slabs. However, polyurethane concrete prefabricated road slabs are different from traditional concrete prefabricated road slabs. Because they are semi-(rigid) flexible materials, they are easily bent and deformed in all directions when lifted directly by traditional steel cables. Also due to the characteristics of the material, before laying the polyurethane concrete prefabricated road slabs on the surface of the base layer, it is also necessary to add a leveling adhesive layer at the bottom, and use vibration and other means to fully combine the prefabricated road slabs with the adhesive material. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a prefabricated road slab intelligent laying machine that can meet the requirements of efficient laying of prefabricated road slabs and realize high-quality intelligent operation in response to the above-mentioned existing technical status.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: a prefabricated road slab intelligent laying machine, characterized by comprising:

[0006] frame;

[0007] A connecting mechanism, installed at the rear of the frame, used to connect with a flatbed trailer loaded with prefabricated road slabs;

[0008] A driving mechanism drives the frame and the flatbed trailer connected to the frame to move synchronously;

[0009] A horizontal guide rail, installed on the rack and arranged horizontally along the travel direction of the rack;

[0010] A walking mechanism, mounted on the horizontal guide rail and capable of reciprocating along the horizontal guide rail;

[0011] A spreader module is installed on the traveling mechanism and can perform lifting and lowering motion and lateral rotation relative to the traveling mechanism. Driven by the traveling mechanism, the spreader module can pass through the frame to lift the prefabricated road slab from the flatbed trailer, and can release the lifted prefabricated road slab to the top of the road surface to be paved;

[0012] Cockpit, mounted on the frame.

[0013] The spreader module can be connected to the traveling mechanism in a variety of ways. Preferably, the traveling mechanism is connected to the spreader module via a hydraulic telescopic column or a hinge or a steel wire rope.

[0014] The driving mechanism can be installed at a plurality of different positions of the frame. Preferably, the driving mechanism is installed at the bottom of the frame.

[0015] Further preferably, the width of the driving mechanism is less than or equal to the width of the prefabricated road plate.

[0016] In order to facilitate the prefabricated road plate to pass through the frame, the width of the middle part of the frame is greater than the bottom width of the frame, and the width of the middle part of the frame is greater than the width of the prefabricated road plate.

[0017] The hanger module can have a variety of structures. Preferably, the hanger module includes a crossbeam and a longitudinal beam, a vibrator and a locking device are installed on the crossbeam and / or the longitudinal beam, an inclination and height sensor is installed in the middle area of ​​the hanger module, and hoisting holes are reserved around the hanger module. With such a configuration, the hoisting module has multiple functions such as intelligent leveling, locking, vibrating and hoisting, ensuring that the paving of the prefabricated road slab meets the construction quality requirements.

[0018] In order to position the spreader module with the prefabricated road slab, the longitudinal beam is flush with the cross beam, and the bottom of the longitudinal beam is provided with a positioning block for positioning and matching with the positioning hole reserved on the prefabricated road slab.

[0019] The locking device can have a variety of structures. Preferably, the locking device includes a height-adjusting locking device and a lifting locking device. The height-adjusting locking device is used to be connected with the leveling element on the prefabricated road plate. The leveling element is connected to the prefabricated road plate through a nut pair. The lifting locking device is used to be connected with the lifting element on the prefabricated road plate. In this way, the height of the prefabricated road plate can be adjusted by the height-adjusting locking device, and the prefabricated road plate can be locked by the lifting locking device to prevent it from falling during lifting.

[0020] The height-adjusting locking device and the lifting locking device can have a variety of structures. Preferably, the height-adjusting locking device and the lifting locking device both include a slide rail, a slider, a motor, a fixed frame, an upper support plate, a lower support plate, a first compression spring, a second compression spring, a spring guide rod, a wrench connecting sleeve and a wrench. The motor is installed on the fixed frame and fixed on the slider. The slider is slidably arranged on the slide rail, and the spring guide rod is arranged above the fixed frame. The first compression spring is sleeved on the spring guide rod, the upper end of the first compression spring is abutted against the upper support plate, and the lower end of the first compression spring is abutted against the fixed frame. The output shaft of the motor is vertically downward, and the wrench is installed on the output shaft of the motor through the wrench connecting sleeve. The second compression spring is sleeved on the wrench, the upper end of the second compression spring is abutted against the wrench connecting sleeve, and the lower end of the second compression spring is abutted against the lower support plate.

[0021] It is further preferred that the wrench of the height adjustment locking device is a polygonal wrench, and the wrench of the lifting locking device is threaded. With such a configuration, when the height adjustment locking device is working, the polygonal wrench drives the leveling element to rotate under the drive of the motor. The leveling element can be a bolt. Since the leveling element cooperates with the nut embedded in the prefabricated road plate, it can drive the prefabricated road plate to move up and down, thereby adjusting the installation height of the prefabricated road plate. When the lifting locking device is working, the threaded wrench is screwed into the nut embedded in the prefabricated road plate to achieve locking.

[0022] Compared with the prior art, the advantages of the present invention are: the flatbed trailer loaded with prefabricated road slabs of the prefabricated road slab intelligent laying machine is connected to the rear of the frame and moves synchronously with the frame under the drive of the driving mechanism; the hoisting device module can perform lifting and lowering movements and horizontal rotation relative to the traveling mechanism; as the traveling mechanism reciprocates on the horizontal guide rail, the prefabricated road slabs on the flatbed trailer can be lifted to the top of the road surface to be laid and released; and the lifting module has multiple functions such as intelligent leveling, locking, vibrating and lifting, thereby realizing the efficient laying of prefabricated road slabs and achieving high-quality intelligent operation; and, the intelligent laying machine can carry out multiple parallel and synchronous construction, and carry out laying operations synchronously along the direction of the road surface, which significantly improves the efficiency of the prefabricated road slab laying operation and can meet the requirements of non-stop construction when applied to airport road panel repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of an intelligent paving machine according to an embodiment of the present invention;

[0024] Figure 2 for Figure 1 A schematic structural diagram of the intelligent paving machine from another angle;

[0025] Figure 3 for Figure 1 A schematic diagram of the structure of the intelligent laying machine from another different angle;

[0026] Figure 4 for Figure 1 A schematic diagram of the structure of the intelligent laying machine from another different angle;

[0027] Figure 5 It is a structural schematic diagram of a hoisting module according to an embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the separation structure of the hoisting module and the prefabricated template according to an embodiment of the present invention;

[0029] Figure 7 It is a schematic diagram of the coordination structure of the hoisting module and the prefabricated module according to an embodiment of the present invention;

[0030] Figure 8 It is a structural schematic diagram of a lifting and locking device according to an embodiment of the present invention;

[0031] Fig. 9 for Figure 8 A schematic structural diagram of the lifting locking device from another angle;

[0032] Fig.10 It is a structural schematic diagram of a height-adjusting and locking device according to an embodiment of the present invention;

[0033] Fig.11It is a structural schematic diagram of multiple intelligent paving machines performing parallel and synchronous construction according to an embodiment of the present invention. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below with reference to the accompanying drawings.

[0035] like Figures 1 to 4 As shown, the intelligent laying machine for prefabricated road slabs of this embodiment includes components such as a frame 1, a connecting mechanism 2, a driving mechanism 3, a horizontal guide rail 4, a traveling mechanism 5, a sling module 6, a cockpit 7 and a flatbed trailer 8. Taking the direction indicated by arrow A as the forward direction, the connecting mechanism 2 is installed at the rear of the frame 1, and the flatbed trailer 8 is connected to the rear of the frame 1 through the connecting mechanism 2, and is used to load the prepared prefabricated road slabs 9. The cockpit 7 is installed on the top of the frame 1. The driving mechanism 3 is installed at the bottom of the frame 1, and is used to drive the frame 1 and the flatbed trailer 8 to move synchronously. The width of the driving mechanism 3 is less than or equal to the width of the prefabricated road slab 9. The horizontal guide rail 4 is installed on the frame 1 and is horizontally arranged along the travel direction of the frame 1, that is, the front-to-back direction. The traveling mechanism 5 is installed on the horizontal guide rail 4 and can reciprocate forward and backward along the horizontal guide rail 4;

[0036] The sling module 6 is installed on the traveling mechanism 5, and the traveling mechanism 5 is connected to the sling module 6 through a hydraulic telescopic column 10 or a hinge or a wire rope, so that the sling module 6 can perform lifting and lowering movements and horizontal rotation relative to the traveling mechanism 5. The width of the middle part of the frame 1 is greater than the bottom width of the frame 1, and the width of the middle part of the frame 1 is greater than the width of the prefabricated road slab 9, so that the sling module 6 can pass through the frame 1 backwards under the drive of the traveling mechanism 5, and lift the prefabricated road slab 9 from the flatbed trailer 8. After that, the sling module 6 passes through the frame 1 forward and releases the lifted prefabricated road slab 9 to the top of the road surface to be laid.

[0037] like Figures 5 to 7 As shown, the spreader module 6 of this embodiment includes a crossbeam 61 and a longitudinal beam 62, a vibrator 63 and a locking device are installed on the crossbeam 61 and / or the longitudinal beam 62, an inclination and height sensor 64 is installed in the middle area of ​​the spreader module 6, and lifting holes 65 are reserved around the spreader module 6, and the lifting holes 65 are used to cooperate with the container spreader. The longitudinal beam 62 of this embodiment is flush with the crossbeam 61, and the bottom of the longitudinal beam 62 has a positioning block 620 for positioning and cooperating with the positioning hole 90 reserved on the prefabricated road plate 9. The positioning block 620 of this embodiment is a conical positioning block, which can be quickly positioned with the positioning hole 90.

[0038] The locking device includes a height-adjusting locking device 66a and a lifting locking device 66b. After the positioning block 620 is positioned with the vacant hole 90, the height-adjusting locking device 66a is connected to the leveling element 91 on the prefabricated road plate 9, and the leveling element 91 is connected to the prefabricated road plate 9 through the embedded nut 93. The lifting locking device 66b is connected to the prefabricated road plate 9 through the lifting element 92.

[0039] like Figures 8 to 10 As shown, the height adjustment locking device 66a and the lifting locking device 66b both include a slide rail 660, a slider 661, a motor 662, a fixing frame 663, an upper support plate 664, a lower support plate 665, a first compression spring 666, a second compression spring 667, a spring guide rod 668, a wrench connecting sleeve 669 and a wrench 6610. The motor 662 is mounted on the fixing frame 663 and fixed on the slider 661, the slider 661 is slidably arranged on the slide rail 660, the spring guide rod 668 is arranged above the fixing frame 663, the first compression spring 666 is sleeved on the spring guide rod 668, and the spring guide rod 668 can ensure that the first compression spring 666 does not come out when compressed. The upper support plate 664 and the lower support plate 665 are both fixed on the slide rail 660, the upper end of the first compression spring 666 abuts against the upper support plate 664, the lower end of the first compression spring 666 abuts against the fixing frame 663, the output shaft of the motor 662 is vertically downward, the wrench 6610 is installed on the output shaft of the motor 662 through the wrench connecting sleeve 669, the second compression spring 667 is sleeved on the wrench 6610, the upper end of the second compression spring 667 abuts against the wrench connecting sleeve 669, and the lower end of the second compression spring 667 abuts against the lower support plate 665. The wrench connecting sleeve 669 connects the motor 662 and the wrench 6610, and the second compression spring 667 supports the motor 62 and the fixing frame 663. Among them, the wrench 6610 of the height adjustment locking device 66a is a polygonal wrench, and the wrench 6610 of the lifting locking device 66b is threaded.

[0040] The first compression spring 666 and the second compression spring 667 are respectively located above and below the motor 662 to keep the motor 662 in the middle position. Preferably, the elastic coefficient of the first compression spring 666 is greater than the elastic coefficient of the second compression spring 667. During leveling and lifting, the motor 662 rotates to drive the wrench 6610 to move downward, ensuring that the motor 662 moves downward synchronously along the slide rail 660 under the push of the first compression spring 666, so that the wrench 6610 remains connected with the leveling element 91 and the lifting element 92.

[0041] When the prefabricated road slab intelligent laying machine is working, the flatbed trailer 8 is first hooked on the frame 1, and then the flatbed trailer 8 is towed by the driving mechanism 3 on the plane of the site to be laid, preferably synchronously moved to the target position through GPS navigation. After the equipment moves to the target position under the control of the intelligent control system, the traveling mechanism 3 moves along the horizontal guide rail 4, under the control of the machine vision system until it reaches the top of the prefabricated road slab 9 of the flatbed trailer 8, and then the sling module 6 is vertically lowered. After the sling module 6 and the prefabricated road slab 9 are aligned through the positioning hole 90, the height adjustment locking device 66a is connected to the leveling element 91. The leveling element 91 of this embodiment is a bolt, which forms a nut pair with the embedded nut 93. The lifting locking device 66b is connected to the lifting element 92, i.e., the prefabricated road slab nut.

[0042] The lifting locking device 66b starts to work, and the lifting element 92, i.e., the prefabricated road plate nut, is screwed down, so that the hanger module 6 is closely attached to the prefabricated road plate 9, and the hanger frame has high rigidity, ensuring that the prefabricated road plate 9 will not bend under the action of gravity. When the prefabricated road plate 9 needs to be lowered, the lifting locking device 66b rotates in the opposite direction, and the lifting element 92, i.e., the prefabricated road plate nut is loosened, and the entire hanger module 6 is also separated from the prefabricated road plate 9.

[0043] During paving, after the equipment lifts the prefabricated road slab 9 from the flatbed trailer 8, it moves to the position of the road surface to be paved under the control of the machine vision system, and then places the prefabricated road slab 9 vertically on the base road surface of the adhesive material. At this time, the inclination and height sensor 64 on the lifting device module 6 continuously detects the inclination and elevation of the road slab. When an abnormal deviation from the target value is detected, the height adjustment locking device 66a is synchronously and automatically controlled to screw down the leveling element 91. The leveling element 91 adopts bolts and forms a nut pair with the embedded nut 93. Therefore, after the leveling element 91 contacts the ground, the prefabricated road slab 9 is automatically lifted to achieve plane angle and height adjustment until the deviation drops to an allowable range.

[0044] The leveling method of the prefabricated road plate 9 in this embodiment mainly includes the steps of initial measurement, data transmission, analysis and calculation, linkage leveling, result re-measurement and the like.

[0045] (1) Initial measurement: After the prefabricated road slab is hoisted and laid in place, the plane position has reached the construction requirements. Only the elevation and slope need to be adjusted. The inclination and height sensors on the hoisting module are combined with the data acquisition device to measure and collect the inclination and elevation data of the fixed position.

[0046] (2) Data transmission: The data acquisition device measures and collects the elevation, inclination and data, and sends them to the intelligent controller in a package. After receiving the data from the data acquisition device, the intelligent controller performs analysis and calculation. Data transmission can preferably use Bluetooth, a dedicated network or a dedicated transmission device.

[0047] (3) Analysis and calculation: The intelligent controller compares the actual inclination and elevation data received with the design inclination and elevation data input in advance, and analyzes and calculates the stroke and number of rotations that need to be adjusted for the locking device of the sling module.

[0048] (4) Linkage leveling: A road panel is designed with multiple leveling points, with four being the preferred number. Multi-point linkage leveling is achieved by synchronously controlling each locking device, so that leveling can be achieved in one go, ensuring leveling accuracy and work efficiency.

[0049] (5) Result re-measurement: The inclination and elevation data collected by the sensor combined with the data acquisition device are sent to the intelligent controller for analysis and calculation. The data is compared with the design value to determine whether the leveling process needs to be repeated. If the error value is within the allowable range, the leveling process is terminated. If the error exceeds the allowable range, the leveling process is repeated until the data error meets the design requirements.

[0050] After the whole prefabricated road slab 9 is leveled, the vibrator 5 starts working, and the hoisting module 6 and the prefabricated road slab 9 start vibrating together, so that the polyurethane concrete or other polymer adhesive materials pre-paved on the road surface to be laid can be completely fitted with the prefabricated road slab 10. After the vibration is completed, all locking devices are released, and the prefabricated road slab 9 and the hoisting module 6 are separated, and the installation of a prefabricated road slab 9 is completed. All links of the above workflow are automatically controlled by the intelligent control system with the support of the machine vision system equipped on the equipment, and unmanned operation can be realized.

[0051] In addition, in order to realize the intelligent sequencing, identification and positioning of the road slabs, as a preferred solution, during the prefabrication of the road slabs, RFID electronic tags (radio frequency identification chips) can be built into the road slabs to realize the intelligent sequencing of the prefabricated road slabs; the intelligent laying machine is equipped with a radio frequency identification reader / writer, which can use radio frequency radio waves to read / write electronic tag information, thereby automatically and contactlessly identifying the prefabricated road slabs; the intelligent control system uses the lifting device module to lift the prefabricated road slabs with the required numbers according to the radio frequency identification results, and accurately moves and locates to the target position with the support of the preferred machine vision system to implement the laying operation of the prefabricated road slabs. The intelligent control system is mainly composed of an intelligent controller, a machine vision camera and sensor, an inclination sensor, a height sensor, a data acquisition device, etc.

[0052] like Fig.11 As shown, using multiple laying machines for parallel and synchronous construction, each laying machine simultaneously performs laying operations along its own pavement 100 direction, which can significantly improve the efficiency of prefabricated road slab laying operations and meet the "non-stop" construction requirements.

[0053] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A prefabricated road slab intelligent laying machine, characterized in that Included are: Rack (1); A connecting mechanism (2) is installed at the rear of the frame (1) and is used to connect with a flatbed trailer (8) loaded with prefabricated road slabs (9); A driving mechanism (3) drives the frame (1) and a flatbed trailer (8) connected to the frame (1) to move synchronously; A horizontal guide rail (4) is mounted on the frame (1) and arranged horizontally along the travel direction of the frame (1); A walking mechanism (5) is installed on the horizontal guide rail (4) and can reciprocate along the horizontal guide rail (4); A lifting device module (6) is installed on the traveling mechanism (5) and can perform lifting and lowering motion and horizontal rotation relative to the traveling mechanism (5). Driven by the traveling mechanism (5), the lifting device module (6) can pass through the frame (1) and lift the prefabricated road slab (9) from the flatbed trailer (8), and can release the lifted prefabricated road slab (9) to the top of the road surface to be laid. A cockpit (7) is mounted on the frame (1).

2. The prefabricated road slab intelligent laying machine according to claim 1 is characterized in that: The walking mechanism (5) is connected to the sling module (6) via a hydraulic telescopic column (10) or a hinge or a steel wire rope.

3. The prefabricated road slab intelligent laying machine according to claim 1 is characterized in that: The driving mechanism (3) is installed at the bottom of the frame (1).

4. The intelligent prefabricated road slab laying machine according to claim 3 is characterized in that: The width of the driving mechanism (3) is less than or equal to the width of the prefabricated road plate (9).

5. The intelligent prefabricated road slab laying machine according to claim 3 is characterized in that: The width of the middle portion of the frame (1) is greater than the width of the bottom portion of the frame (1), and the width of the middle portion of the frame (1) is greater than the width of the prefabricated track plate (9).

6. The intelligent prefabricated road slab laying machine according to claim 1 is characterized in that: The sling module (6) comprises a crossbeam (61) and a longitudinal beam (62), a vibrator (63) and a locking device are installed on the crossbeam (61) and / or the longitudinal beam (62), an inclination and height sensor (64) is installed in the middle area of ​​the sling module (6), and sling holes (65) are reserved around the sling module (6).

7. The intelligent prefabricated road slab laying machine according to claim 6 is characterized in that: The longitudinal beam (62) is flush with the cross beam (61) in vertical direction, and the bottom of the longitudinal beam (62) is provided with a positioning block (620) for positioning and matching with a positioning hole (90) reserved on the prefabricated road plate (9).

8. The intelligent prefabricated road slab laying machine according to claim 6 is characterized by: The locking device comprises a height-adjusting locking device (66a) and a lifting locking device (66b), wherein the height-adjusting locking device (66a) is used to be connected with a leveling element (91) on the prefabricated road plate (9), wherein the leveling element (91) is connected with the prefabricated road plate (9) via a pre-embedded nut (93), and the lifting locking device (66b) is used to be connected with a lifting element (92) on the prefabricated road plate (9).

9. The intelligent prefabricated road slab laying machine according to claim 8, characterized in that: The height adjustment locking device (66a) and the lifting locking device (66b) both include a slide rail (660), a slider (661), a motor (662), a fixed frame (663), an upper support plate (664), a lower support plate (665), a first compression spring (666), a second compression spring (667), a spring guide rod (668), a wrench connecting sleeve (669) and a wrench (6610), wherein the motor (662) is mounted on the fixed frame (663) and fixed on the slider (661), the slider (661) is slidably arranged on the slide rail (660), and the spring guide rod (668) is arranged on the fixed frame (663). ), the first compression spring (666) is sleeved on the spring guide rod (668), the upper end of the first compression spring (666) is against the upper support plate (664), the lower end of the first compression spring (666) is against the fixing frame (663), the output shaft of the motor (662) is vertically downward, the wrench (6610) is installed on the output shaft of the motor (662) through the wrench connecting sleeve (669), the second compression spring (667) is sleeved on the wrench (6610), the upper end of the second compression spring (667) is against the wrench connecting sleeve (669), and the lower end of the second compression spring (667) is against the lower support plate (665).

10. The intelligent prefabricated road slab laying machine according to claim 9, characterized in that: The wrench (6610) of the height adjustment locking device (66a) is a polygonal wrench, and the wrench (6610) of the lifting locking device (66b) is threaded.

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