Self-adaptive multi-section adjustable laser leveling machine

Abstract

The invention relates to the technical field of leveling machines, and discloses a self-adaptive multi-section adjustable laser leveling machine which comprises an adjustable driving arm and a leveling machine head, the adjustable driving arm comprises a main arm body, a driving support arm, a positioning plate, a positioning rod, a first gear, a driving gear and a first motor, the driving support arm is slidably connected with the main arm body, and the driving support arm is slidably connected with the main arm body; the leveling machine head is connected with the driving supporting arm through the vibration reduction frame, a plurality of positioning grooves are formed in the main arm body, the two positioning plates are embedded in the different positioning grooves respectively, the positioning rods are fixedly connected to the lower portions of the positioning plates, and the two ends of the chain are fixedly connected with the two positioning rods respectively. The first motor is fixedly connected in the driving support arm and drives the driving gear to rotate, the first gear is rotationally connected with the driving support arm, and the chain is wound on the driving gear and the first gear. According to the invention, multi-section accurate adjustment of the driving support arm is realized, the problem of fixed driving distance is thoroughly solved, and the full-scene construction requirements are met.

Description

Technical Field

[0001] This invention relates to the field of leveling machine technology, specifically to an adaptive multi-segment adjustable laser leveling machine. Background Technology

[0002] In the fields of road engineering, sports venues, municipal squares, and similar paving projects, laser screeds are the core construction machinery for achieving high-precision leveling of hard paving base and surface layers. The drive arm, as a key transmission component connecting the laser screed to the vehicle body and the leveling actuator, functions to drive the screed head in forward and backward reciprocating movements, achieving full-coverage leveling of road paving, sports field floors, square floors, and other construction surfaces. The adjustment accuracy of the drive arm's travel distance and the flexibility of its stroke settings directly determine the precision of the screed head's working position, thus affecting the flatness of the paving surface and construction efficiency. This is the core key to adapting laser screeds to different road and site construction scenarios and improving the quality of paving projects.

[0003] Currently, the traditional adjustable drive arms used in laser screed machines have a rudimentary design for adjusting the travel distance and lack precise multi-level adjustment functions. This makes them unable to meet the high-precision, multi-scenario adaptability, and high-efficiency operational requirements of modern road, stadium, and similar paving projects. This has become a core weakness restricting the paving performance of laser screed machines. The specific defects of traditional drive arms in terms of adjustment function are as follows: Traditional outriggers typically have a fixed single-stroke travel distance, making it impossible to flexibly adjust the forward and backward movement of the outrigger according to the actual needs of road and site construction scenarios. In small-area paving areas such as narrow road gaps, around sports field columns, and beside municipal facilities, the inability to reduce the stroke of the outrigger can easily lead to problems such as the paving head colliding with construction obstacles and failing to cover blind spots in paving, affecting the overall integrity of the paving work. In large-area paving areas such as main roads, large stadiums, and municipal squares, the inability to increase the stroke requires the outrigger to frequently move back and forth over short distances, significantly reducing the efficiency of paving operations, increasing ineffective equipment wear and tear, and lengthening the overall project construction cycle.

[0004] In view of this, the applicant conducted in-depth research on the above-mentioned issues, which led to this case. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an adaptive multi-segment adjustable laser leveling machine, which can effectively solve the aforementioned technical problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution: An adaptive multi-segment adjustable laser leveling machine includes an adjustable drive arm and a leveling head. The adjustable drive arm includes a main arm body, a drive arm, a positioning plate, a positioning rod, a chain, a first gear, a drive gear, and a first motor. The drive arm is slidably connected to the main arm body. The leveling head is connected to the drive arm via a vibration damping frame. The main arm body has several positioning slots. Two positioning plates are provided and are respectively embedded in different positioning slots. The positioning rod is fixedly connected to the bottom of the positioning plate. The two ends of the chain are respectively fixedly connected to the two positioning rods. The first motor is fixedly connected inside the drive arm and drives the drive gear to rotate. The first gear is rotatably connected to the drive arm. The chain is wound around the drive gear and the first gear.

[0007] Furthermore, it also includes a second gear, which is rotatably connected to the rear end of the drive arm and meshes with the chain for transmission.

[0008] Furthermore, the drive arm is also equipped with a tension block, a tension gear, a lead screw, and a tension seat. The tension seat is connected to the upper end of the drive arm. The tension block and the tension seat are slidably connected. The lead screw is rotatably connected to the tension seat and threadedly connected to the tension block. The tension block is equipped with a rotatably connected shaft. The tension gear is sleeved on the shaft and meshes with the chain for transmission.

[0009] Furthermore, the lower surface of the drive arm is provided with symmetrically arranged guide wheel grooves, and the lower end of the main arm body is provided with several sets of symmetrically arranged rollers, which roll in cooperation with the guide wheel grooves.

[0010] Furthermore, guide grooves are provided on both sides of the drive arm, and horizontally arranged guide blocks are provided on the inner side of the main arm body, with the guide blocks slidingly engaging with the guide grooves.

[0011] Furthermore, a chain guide block is provided inside the drive arm, which slides in conjunction with the chain.

[0012] Furthermore, a reinforcing crossbeam is provided at the bottom inside the drive arm.

[0013] Furthermore, the leveling head includes a fixed plate, a first lifting frame, a scraper, and a tumbling mechanism. The fixed plate is connected to the lower end of the vibration damping frame. The fixed plate is equipped with a first lifting drive mechanism. The first lifting frame is connected to the power output end of the first lifting drive mechanism. The scraper is installed on the first lifting frame. The tumbling mechanism includes a second lifting frame, a second motor, a tumbling shaft, and tumbling claws. The first lifting frame is equipped with the second lifting drive mechanism. The second lifting frame is connected to the second lifting drive mechanism. The tumbling shaft is rotatably connected to the second lifting frame. The second motor is connected to the second lifting frame and drives the tumbling shaft to rotate. The tumbling claws are connected to the tumbling shaft. The first lifting frame is equipped with screening claws spaced apart from the tumbling claws.

[0014] Furthermore, the first lifting frame includes a horizontal plate and a vertical plate connected vertically. A vibration motor is provided on the horizontal plate, a scraper is connected to the vertical plate, and a connecting plate is also provided on the vertical plate. Screening claws are arranged on the connecting plate and are correspondingly arranged on the side of the clearance space.

[0015] Furthermore, the stirring claws are evenly distributed around the outer circumference of the stirring shaft, and the stirring claws are evenly arranged along the axis of the stirring shaft, with clearance space provided between the stirring claws.

[0016] This invention provides an adaptive multi-segment adjustable laser leveling machine. It has the following beneficial effects: This invention utilizes several positioning slots on the main boom body, along with two detachable and embedded positioning plates and rods, to fix both ends of the drive chain to the positioning rods. A motor drives the gears, which in turn move the chain, driving the outrigger to move back and forth relative to the main boom body. Furthermore, by adjusting the installation position of the positioning plates in different positioning slots, the travel distance and extension stroke of the drive outrigger can be freely adjusted, achieving a multi-segment adjustable design. This invention completely solves the shortcomings of traditional drive booms with a fixed single stroke in the prior art. In small construction areas such as narrow gaps and around columns, the positioning plates can be adjusted to a short-stroke setting to reduce the travel distance of the drive outrigger, avoiding collisions with obstacles and eliminating leveling dead zones. In large-area floor construction areas such as factories and plazas, the long-stroke setting can be adjusted to increase the travel distance of the drive outrigger, reducing frequent and ineffective reciprocating movements and significantly improving leveling efficiency. This allows one machine to adapt to small, medium, and large-scale concrete construction scenarios, enhancing the overall applicability of the equipment.

[0017] In this invention, the sliding fit between the drive arm and the main arm is smoother. The drive arm moves linearly only in the horizontal direction without lateral deviation or vertical swaying, ensuring the positional accuracy of the leveling head as it moves with the drive arm. This effectively avoids quality defects such as uneven concrete leveling height and uneven joints caused by unstable drive arm movement in the prior art, thus improving the overall construction accuracy of concrete leveling.

[0018] This invention features a reinforcing crossbeam at the bottom of the drive arm, directly enhancing its structural strength. This allows the drive arm to withstand the weight of the leveling machine head, leveling resistance during construction, and vibration impacts, preventing bending and deformation due to prolonged stress. Simultaneously, the drive arm's transmission components are internal, and the guide components utilize rolling and sliding engagement, reducing wear between components and extending the drive arm's service life. Compared to the frequent reciprocating movements of traditional drive arms with fixed strokes in the prior art, this invention reduces ineffective movement through multi-stage adjustment, lowering mechanical wear and further improving overall durability and maintenance costs.

[0019] This invention, based on the optimization of the adjustable drive arm, retains the integrated functions of concrete mixing, large stone particle screening, and vibratory leveling of the leveling head. The mixing mechanism can perform secondary mixing of concrete to avoid segregation and premature solidification, the screening claw can accurately screen out large stone particles, reducing leveling resistance from the source, and the vibrating scraper can achieve compaction and leveling of concrete. Furthermore, the mixing depth and leveling height of the leveling head can be independently adjusted by the lifting drive mechanism, which works in conjunction with the stroke adjustment of the adjustable drive arm.

[0020] The multi-segment adjustment method of the drive arm of this invention is simple to operate. Stroke adjustment can be completed simply by disassembling the positioning plate and reinstalling it into the target positioning slot, without disassembling complex transmission components, allowing operators to quickly learn how to use it. Furthermore, the tensioning component, guide component, and vibration damping component of the drive arm are all modularly designed. Wearing components can be disassembled and replaced individually, eliminating the need to replace the entire equipment, thus reducing maintenance difficulty and long-term operating costs. In addition, the adjustable drive arm structure of this invention can be directly adapted to the body and head of existing laser leveling machines without requiring large-scale modifications to the entire machine, demonstrating significant potential for widespread application. Attached Figure Description

[0021] Figure 1 This is a perspective view of the external structure of the present invention; Figure 2 This is a three-dimensional cross-sectional view of the adjustable drive arm. Figure 3 for Figure 2 A magnified view of a portion of region A in the middle; Figure 4 A three-dimensional view of the external structure of the leveling machine head; Figure 5 This is a side view of the cross-sectional structure of the leveling machine head; Figure 6 This is a three-dimensional view of the external structure of the vibration damper frame; Figure 7 This is a schematic cross-sectional view of the first vibration damping component; Figure 8 This is a schematic cross-sectional view of the second vibration damping component.

[0022] The components include: adjustable drive arm 1, main arm body 11, positioning groove 111, drive support arm 12, guide chain block 121, positioning plate 13, positioning rod 14, chain 151, first gear 152, drive gear 153, first motor 154, second gear 155, tension block 161, tension gear 162, lead screw 163, tension seat 164, leveling head 2, fixing plate 21, first lifting frame 22, horizontal plate 221, vertical plate 222, vibration motor 223, connecting plate 224, scraper 23, mounting base 241, and first... Cylinder 242, second cylinder 243, vibration damping frame 3, adapter plate 31, upper bracket 32, vertical rod 33, connecting ear 331, adapter seat 34, stirring mechanism 4, second lifting frame 41, second motor 42, stirring shaft 43, stirring claw 44, screening claw 45, first vibration damping component 5, support rod 51, reinforcing rib 511, outer shell 52, second vibration damping component 6, lower base 61, upper base 62, sleeve 63, connecting rod 641, iron sheet 642, elastic sheet 643, abutment seat 65, abutment rod 66, arc plate 67. Detailed Implementation

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see the appendix Figure 1 -Appendix Figure 8This invention provides an adaptive multi-segment adjustable laser leveling machine, including an adjustable drive arm 1 and a leveling head 2. The adjustable drive arm 1 includes a main arm body 11, a drive support arm 12, a positioning plate 13, a positioning rod 14, a chain 151, a first gear 152, a drive gear 153, and a first motor 154. The drive support arm 12 is slidably connected to the main arm body 11. The leveling head 2 is connected to the drive support arm 12 through a vibration damping frame 3. A reinforcing crossbeam is provided at the bottom inside the drive support arm 12 to improve the structural strength of the drive support arm 12. The main arm 11 has several positioning slots 111. Two positioning plates 13 are respectively embedded in different positioning slots 111. Positioning rods 14 are fixedly connected to the lower part of the positioning plates 13. The two ends of the chain 151 are fixedly connected to the two positioning rods 14 respectively. A first motor 154 is fixedly connected to the drive arm 12 and drives the drive gear 153 to rotate. A first gear 152 is rotatably connected to the drive arm 12. The chain 151 is wound around the drive gear 153 and the first gear 152. Specifically, a second gear 155 is also included, which is rotatably connected to the rear end of the drive arm 12 and meshes with the chain 151 for transmission. The first motor 154 causes the drive gear 153 to rotate. During forward or reverse rotation, the drive gear 153 drives the chain 151 to move. Since both ends of the chain 151 are fixedly connected to the main arm 11, the chain 151 can drive the drive arm 12 to move back and forth during movement. Furthermore, by adjusting the installation position of the positioning plate 13 on the main boom 11, the movement distance and extension distance of the drive boom 12 can be adjusted, thereby improving the adjustability and applicability of the drive boom while meeting the structural strength requirements of the drive boom, and further enhancing the working stability of the leveling machine.

[0025] In this embodiment, the drive arm 12 is further provided with a tensioning block 161, a tensioning gear 162, a lead screw 163, and a tensioning seat 164. The tensioning seat 164 is connected to the upper end of the drive arm 12. The tensioning block 161 and the tensioning seat 164 are slidably connected vertically. The lead screw 163 is rotatably connected to the tensioning seat 164 and threadedly connected to the tensioning block 161. The tensioning block 161 is provided with a rotatably connected shaft. The tensioning gear 162 is sleeved on the shaft and meshes with the chain 151 for transmission. With the above structure, the vertical position of the tensioning gear 162 can be adjusted by rotating the lead screw 163, thereby adjusting the tension of the chain 151.

[0026] In this embodiment, to make the sliding between the drive arm 12 and the main arm 11 smoother, the lower surface of the drive arm 12 is provided with symmetrically arranged guide wheel grooves, and the lower end of the main arm 11 is provided with several sets of symmetrically arranged rollers, which roll in cooperation with the guide wheel grooves. Guide grooves are also provided on the two side walls of the drive arm 12, and horizontally arranged guide blocks are provided on the inner side wall of the main arm 11, which slide in cooperation with the guide grooves, thereby guiding and limiting the movement of the drive arm 12.

[0027] In this embodiment, a guide block 121 is provided inside the drive arm 12. The guide block 121 slides with the chain 151 to guide and support the chain 151, making the chain 151 move more smoothly.

[0028] In this embodiment, the leveling head 2 includes a fixed plate 21, a first lifting frame 22, a scraper 23, and a stirring mechanism 4. The fixed plate 21 is fixedly connected to the lower end of the vibration damping frame 3. The fixed plate 21 is provided with a first lifting drive mechanism. The first lifting frame 22 is connected to the power output end of the first lifting drive mechanism. The scraper 23 is installed on the first lifting frame 22. The stirring mechanism 4 includes a second lifting frame 41, a second motor 42, a stirring shaft 43, and stirring claws 44. The first lifting frame 22 is provided with a second lifting drive mechanism. The second lifting frame 41 is connected to the second lifting drive mechanism. The stirring shaft 43 is rotatably connected to the second lifting frame 41. The second motor 42 is connected to the side of the second lifting frame 41. The output shaft of the second motor 42 is connected to the stirring shaft 43, thereby driving the stirring shaft 43 to rotate. The stirring claws 44 are connected to the stirring shaft 43. The first lifting frame 22 is provided with screening claws 45 spaced apart from the stirring claws 44. The first and second lifting drive mechanisms enable independent lifting and adjustment of the first lifting frame 22 and the second lifting frame 41, respectively, allowing for flexible adjustment of the mixing depth and leveling height based on the concrete pouring thickness and slump. The adjustable drive arm 1 drives the scraper 23 to move horizontally, leveling the concrete.

[0029] In this embodiment, the agitating claws 44 are evenly distributed around the outer circumference of the agitating shaft 43, and are evenly arranged along the axis of the agitating shaft 43, with clearance space between them. The agitating claws 44 extend in an arc shape. Thus, when the second motor 42 drives the agitating shaft 43 to rotate, the agitating claws 44 can cause the concrete to tumble, thus achieving a mixing effect. Furthermore, the first lifting frame 22 includes a horizontal plate 221 and a vertical plate 222 connected vertically. A vibration motor 223 is mounted on the horizontal plate 221, which can drive the scraper 23 to vibrate. The scraper 23 is connected to the vertical plate 222, which also has a connecting plate 224. Screening claws 45 are arranged on the connecting plate 224, corresponding to the sides of the clearance space. The screening claws 45 extend in an arc shape, with the end of the screening claw 45 near the agitating claw 44 bent upwards. The spacing between the agitating claw 44 and the screening claw 45 can be selected according to requirements. Before or during leveling, the agitating claw 44 agitates the concrete, bringing it onto the screening claw 45. The concrete can then pass through the gaps between the screening claws 45 and fall back to the ground. When there are large stones in the concrete, they can be isolated on the screening claw 45, and because the screening claw 45 extends in an arc shape, the large stones can slide away from the agitating claw 44. Repeating the above steps can remove large stones from the concrete.

[0030] In this embodiment, the first lifting drive mechanism includes a mounting base 241 and a first cylinder 242. The mounting base 241 is symmetrically arranged on the upper surface of the fixed plate 21, and the first cylinder 242 is connected to the mounting base 241. The piston rod of the first cylinder 242 is connected to the upper surface of the horizontal plate 221. The first cylinder 242 can drive the first lifting frame 22 to perform lifting movements. The second lifting drive mechanism includes a second cylinder 243, which is symmetrically arranged on the first lifting frame 22. The piston rod of the second cylinder 243 is connected to the upper end of the second lifting frame 41. The second cylinder 243 can drive the second lifting frame 41 to perform lifting movements. An arc-shaped baffle is provided on the side of the second lifting frame 41 away from the vertical plate 222. The arc-shaped baffle can prevent concrete from splashing during the mixing of concrete.

[0031] More preferably, to reduce the impact of the severe vibration generated during the operation of the leveling head 2 on the adjustable drive arm 1, the vibration damping frame 3 includes an adapter plate 31, an upper support 32, vertical rods 33, an adapter seat 34, a first vibration damping component 5, and a second vibration damping component 6. The adapter plate 31 is fixedly connected to the front end of the adjustable drive arm 1, the upper support 32 is fixedly connected to the lower surface of the adapter plate 31, and the vertical rods 33 are arranged in an array and connected to the lower end of the upper support 32. In this embodiment, there are nine vertical rods 33. Adjacent vertical rods 33 are connected by the first vibration damping component 5, which is inclined and provides connection support for the vertical rods 33, and dissipates the vibration force. The second vibration damping component 6 is connected to the lower end of the vertical rods 33, the adapter seat 34 is connected to the second vibration damping component 6, and the leveling head 2 is connected to the lower end of the adapter seat 34. The second vibration damping component 6 can dissipate the vibration received by the vibration damping frame 3.

[0032] In this embodiment, two adjacent vertical rods 33 have staggered connecting ears 331 on their sidewalls. The first vibration damping components 5 are connected to the staggered connecting ears 331 on both sides, so that the first vibration damping components 5 are inclined. The first vibration damping components 5 can form a triangular support and a grid support structure, which improves the structural strength of the vibration damping frame 3. Specifically, the first vibration damping component 5 includes a support rod 51 and an outer shell 52. The two ends of the support rod 51 are respectively connected to the connecting ears 331 on the two adjacent vertical rods 33 by screws, which facilitates the assembly and disassembly of the support rod 51. The outer wall of the support rod 51 is provided with several reinforcing ribs 511. The reinforcing ribs 511 can improve the structural integrity of the support rod 51. The outer shell 52 is fitted on the support rod 51 and is filled with polyurethane material. With the above structure, when the leveling head 2 vibrates, the vertical rods 33 will vibrate and displace relative to each other. Since the support rod 51 acts as an inclined support, it can provide multi-directional limiting constraints on the vertical rods 33, effectively supporting them and preventing bending deformation under long-term vibration. Furthermore, the two ends of the support rod 51 are subjected to compressive and tensile forces. Because the support rod 51 is made of low yield strength steel, when its bending deformation reaches a threshold, it will enter a plastic deformation state before the vertical rods 33, thus converting the kinetic energy generated by the intense vibration into plastic deformation energy for energy dissipation. The reinforcing rib 511 and the outer sleeve 52 work together to effectively limit the twisting and lateral instability of the support rod 51. Moreover, the outer sleeve 52, through its rigid constraint characteristics, ensures that the support rod 51 only bends and deforms in a preset direction. The polyethylene foam covering material filling the gap between the support rod 51 and the outer casing 52 can, on the one hand, buffer the contact friction between the two during structural vibration, and on the other hand, provide slight damping when the support rod 51 deforms, thus completing the dissipation of vibration force.

[0033] In this embodiment, the second vibration damping component 6 includes a lower base 61, an upper base 62, and a sleeve 63. A connecting rod 641 is provided at the upper end of the lower base 61, and the connecting rod 641 is fixedly connected to the lower end of the upper base 62. Iron plates 642 and elastic plates 643 are spaced on the connecting rod 641. The sleeve 63 is fitted over the iron plates 642 and elastic plates 643, providing constraint and sealing. The sleeve 63 can be made of rubber, and the elastic plates 643 can be made of rubber sheets. The lower base 61 also has several abutment seats 65. A slidingly connected abutment rod 66 is provided at the upper end of each abutment seat 65. An arc-shaped plate 67 is provided at the front end of each abutment rod 66, and a spring is fitted on the abutment rod 66. One end of the spring abuts against the arc-shaped plate 67, and the other end of the spring abuts against the abutment seat 65. Connecting columns are arrayed on the lower surface of the lower base 61 and the upper surface of the upper base 62. The connecting columns of the lower base 61 are fixedly connected to the adapter 34, and the connecting columns at the upper end are fixedly connected to the lower end of the vertical rod 33. With this structure, when the leveling head 2 vibrates violently, the iron sheet 642 and the elastic sheet 643 can deform in the direction of vibration, transmitting the vibration force to the elastic sheet 643. This causes the elastic sheet 643 to stretch and shift, while the iron sheet 642 can constrain the elastic sheet 643. Furthermore, during vibration, the upper base 62 and the lower base 61 can also undergo relative displacement, dissipating and dispersing the vibration force. This further reduces the vibration force on the upper support 32 and the adjustable drive arm 1. Additionally, when the sleeve 63 sways, the abutment plate can abut against it through the spring force, supporting the sleeve 63. During this process, the vibration force on the lower end of the adapter 34 can be further offset, thereby improving the vibration damping effect of the damping frame 3.

[0034] Through the above structure, the first vibration damping component 5, with its inclined low yield strength ratio steel support rod 51 and polyurethane-filled outer shell 52, forms a triangular grid support for the vertical rod 33, improving the overall structural strength of the vibration damping frame 3, and converts the vibration kinetic energy into the plastic deformation energy of the support rod 51. At the same time, the polyurethane material and reinforcing ribs 511 can buffer friction and limit the instability of the support rod 51, achieving primary dissipation of vibration and preventing the vertical rod 33 from bending and deforming due to long-term vibration. The second vibration damping component 6 adopts an alternating superimposed structure of iron sheet 642 and rubber elastic sheet 643, combined with the constraint of sleeve 63 and the buffer of spring abutment rod 66, so that the vibration force is further dissipated through the stretching and misalignment of elastic sheet 643. At the same time, the abutment rod 66 can elastically support the sway of sleeve 63, completing the secondary absorption of vibration and significantly reducing the vibration force transmitted to the upper support 32 and adjustable drive arm 1. Furthermore, the first vibration damping component 5 and the second vibration damping component 6 are connected by screws, which makes it easy to disassemble and replace them when the first vibration damping component 5 and the second vibration damping component 6 are damaged due to excessive vibration force plastic deformation, making the operation more convenient.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adaptive multi-segment adjustable laser leveling machine, characterized in that, The machine includes an adjustable drive arm and a leveling head. The adjustable drive arm includes a main arm body, a drive arm, a positioning plate, a positioning rod, a chain, a first gear, a drive gear, and a first motor. The drive arm is slidably connected to the main arm body. The leveling head is connected to the drive arm through a vibration damping frame. The main arm body has several positioning slots. There are two positioning plates, which are respectively embedded in different positioning slots. The positioning rod is fixedly connected to the bottom of the positioning plate. The two ends of the chain are respectively fixedly connected to the two positioning rods. The first motor is fixedly connected in the drive arm and drives the drive gear to rotate. The first gear is rotatably connected to the drive arm. The chain is wound around the drive gear and the first gear.

2. The adaptive multi-segment adjustable laser leveling machine according to claim 1, characterized in that, It also includes a second gear, which is rotatably connected to the rear end of the drive arm and meshes with the chain for transmission.

3. The adaptive multi-segment adjustable laser leveling machine according to claim 2, characterized in that, The drive arm is also equipped with a tension block, a tension gear, a lead screw, and a tension seat. The tension seat is connected to the upper end of the drive arm. The tension block and the tension seat are slidably connected. The lead screw is rotatably connected to the tension seat and threadedly connected to the tension block. The tension block is equipped with a rotating shaft that is rotatably connected. The tension gear is sleeved on the rotating shaft and meshes with the chain for transmission.

4. The adaptive multi-segment adjustable laser leveling machine according to claim 1, characterized in that, The lower surface of the drive arm is provided with symmetrically arranged guide wheel grooves, and the lower end of the main arm body is provided with several sets of symmetrically arranged rollers, which roll in cooperation with the guide wheel grooves.

5. The adaptive multi-segment adjustable laser leveling machine according to claim 4, characterized in that, Guide grooves are provided on both sides of the drive boom, and horizontally arranged guide blocks are provided on the inner side of the main boom body. The guide blocks slide in conjunction with the guide grooves.

6. The adaptive multi-segment adjustable laser leveling machine according to claim 5, characterized in that, The drive arm has a guide block inside, which slides with the chain.

7. The adaptive multi-segment adjustable laser leveling machine according to claim 6, characterized in that, A reinforcing crossbeam is installed at the bottom inside the drive arm.

8. The adaptive multi-segment adjustable laser leveling machine according to claim 1, characterized in that, The leveling machine head includes a fixed plate, a first lifting frame, a scraper, and a tumbling mechanism. The fixed plate is connected to the lower end of the vibration damping frame. The fixed plate is equipped with a first lifting drive mechanism. The first lifting frame is connected to the power output end of the first lifting drive mechanism. The scraper is installed on the first lifting frame. The tumbling mechanism includes a second lifting frame, a second motor, a tumbling shaft, and tumbling claws. The first lifting frame is equipped with a second lifting drive mechanism. The second lifting frame is connected to the second lifting drive mechanism. The tumbling shaft is rotatably connected to the second lifting frame. The second motor is connected to the second lifting frame and drives the tumbling shaft to rotate. The tumbling claws are connected to the tumbling shaft. The first lifting frame is equipped with screening claws spaced apart from the tumbling claws.

9. An adaptive multi-segment adjustable laser leveling machine according to claim 8, characterized in that, The first lifting frame includes a horizontal plate and a vertical plate connected vertically. A vibration motor is installed on the horizontal plate, a scraper is connected to the vertical plate, and a connecting plate is also provided on the vertical plate. Screening claws are arranged on the connecting plate and are correspondingly set on the side of the clearance space.

10. An adaptive multi-segment adjustable laser leveling machine according to claim 9, characterized in that, The tumbling claws are evenly distributed around the outer circumference of the tumbling shaft, and are evenly arranged along the axis of the tumbling shaft, with clearance space between the tumbling claws.

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