Pavement base joint cutter

By combining a lifting and traversing mechanism with a rotary motor and a laser, the road base layer cutting machine achieves deep cutting and high-precision positioning, solving the depth limitations and dust pollution problems of traditional cutting machines, and improving construction efficiency and environmental friendliness.

CN224186582UActive Publication Date: 2026-05-01LONGJIAN ROAD & BRIDGE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
LONGJIAN ROAD & BRIDGE CO LTD
Filing Date
2025-05-30
Publication Date
2026-05-01

AI Technical Summary

Technical Problem

Traditional road base cutting machines suffer from limited cutting depth, poor positioning accuracy, serious dust pollution, and inconvenient laser placement, making it difficult to meet the needs of efficient construction under complex working conditions.

Method used

By employing a lifting mechanism, a traversing mechanism, and a rotary motor in conjunction with a laser, stepless adjustment of multiple lasers and three-dimensional spatial positioning are achieved. Combined with modular design and an environmentally friendly dust removal device, the cutting depth and positioning accuracy are improved.

Benefits of technology

It achieves efficient cutting of cement-stabilized crushed stone base layers up to 20cm deep, with a positioning accuracy of ±1mm, reducing dust pollution and improving construction efficiency and environmental friendliness.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224186582U_ABST
Patent Text Reader

Abstract

The utility model discloses a pavement base joint cutter and belongs to the technical field of pavement construction. The lifting mechanism is installed on the vehicle body, the transverse moving mechanism is installed on a lifting sliding block of the lifting mechanism, a connecting block is installed on a transverse moving sliding block of the transverse moving mechanism, a plurality of connecting blocks are connected in series through an inserting plate, a rotating motor is installed on the front surface of each connecting block, and the rotating motors are connected with the connecting blocks. An output shaft of each rotating motor is provided with a mounting frame, and the mounting frames are used for mounting a laser. The laser cutting is adopted, one-time cutting of the cement stabilized macadam base layer with the depth of 20 cm can be achieved, and the depth limitation of a traditional mechanical cutter is broken through. According to the utility model, a plurality of lasers can act at the same time, and stepless adjustment of adjacent lasers is realized through cooperation of the sleeve type plug board and the sliding groove guide rail. The lifting mechanism and the transverse moving mechanism are cooperatively controlled to form a three-dimensional space positioning system, and meanwhile, the angle deflection of the laser is realized through the positive and negative rotation of the rotating motor.
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Description

A road base layer cutting machine Technical Field

[0001] This utility model belongs to the field of road construction technology, specifically relating to a road base layer cutting machine. Background Technology

[0002] Traditional road base layer cutting machines mostly use circular saw blades for road cutting, which have the following technical drawbacks: First, the cutting depth of the saw blade is limited by the blade size, making it difficult to meet the cutting requirements of 20cm deep cement-stabilized crushed stone base layers; second, repeated positioning and adjustment are required when cutting multiple joints, resulting in low efficiency and poor positioning accuracy; third, the cutting process generates a large amount of dust pollution, and there is a lack of effective dust removal devices. Although laser cutting equipment exists in the existing technology, it generally suffers from problems such as fixed laser layout, inconvenient spacing adjustment, and poor angle adaptability, making it impossible to achieve rapid assembly and spatial position adjustment of multiple laser heads, and thus failing to meet the high-efficiency construction requirements under complex working conditions. Summary of the Invention

[0003] In order to solve the above problems, this utility model provides a road base layer cutting machine that can perform deep cutting, has high positioning accuracy, and also has a dust removal function.

[0004] The technical solution adopted by this utility model is:

[0005] A road base layer cutting machine, mounted on a vehicle body, includes a lifting mechanism, a lateral movement mechanism, a connector plate, a laser, and a rotary motor. The lifting mechanism is mounted on the vehicle body, the lateral movement mechanism is mounted on the lifting slider of the lifting mechanism, a connecting block is mounted on the lateral movement slider of the lateral movement mechanism, and multiple connecting blocks are connected in series via connector plates. A rotary motor is mounted on the front surface of each connecting block, and a mounting bracket is mounted on the output shaft of each rotary motor for mounting the laser.

[0006] Compared with the prior art, the present invention has the following advantages:

[0007] 1. This utility model uses laser cutting to achieve one-time cutting of cement-stabilized crushed stone base layer up to 20cm deep, breaking through the depth limitation of traditional mechanical tools.

[0008] 2. This utility model can enable multiple lasers to work simultaneously, and through the cooperation of the sleeve-type plug-in plate and the sliding guide rail, stepless adjustment of adjacent lasers can be achieved.

[0009] 3. The lifting mechanism and the lateral movement mechanism of this utility model are controlled in coordination to form a three-dimensional spatial positioning system (positioning accuracy ±1mm). At the same time, the laser angle deflection is realized through the forward and reverse rotation motor.

[0010] 4. This utility model achieves a breakthrough improvement in three major technical indicators in the field of road construction: cutting depth, operation efficiency, and environmental friendliness through the organic combination of innovative modular design, intelligent adjustment system and environmentally friendly dust removal device. It is particularly suitable for deep base cutting operations in highway reconstruction and expansion projects. Attached Figure Description

[0011] Figure 1 is a schematic diagram of the structure of this utility model;

[0012] Figure 2 is a front view of this utility model;

[0013] Figure 3 is a side view of this utility model;

[0014] Figure 4 is a schematic diagram of the transverse movement mechanism of this utility model;

[0015] The components are as follows: 1. Vehicle body; 2. Lateral movement mechanism; 3. Dust collection mechanism; 4. Lifting mechanism; 5. Connecting plate; 6. Top screw; 7. Laser; 8. Mounting bracket; 9. Rotary motor; 10. Connecting block; 201. Guide rail; 202. Slide groove; 203. Center groove; 204. Drive motor; 205. Screw; 206. Lateral movement slider; 301. Dust collection box; 302. Dust collection fan; 303. Main dust collection pipe; 304. Branch dust collection pipe; 1001. Slot. Detailed Implementation

[0016] To better understand the purpose, structure, and function of this utility model, a more detailed description of this utility model will be provided below with reference to the accompanying drawings.

[0017] As shown in Figures 1 to 4, this utility model provides a road base layer cutting machine, which is installed on a vehicle body 1 and includes a lifting mechanism 4, a lateral movement mechanism 2, a connector plate 5, a laser 7, and a rotary motor 9. The lifting mechanism 4 is installed on the vehicle body 1, and the lateral movement mechanism 2 is installed on the lifting slider of the lifting mechanism 4. A connecting block 10 is installed on the lateral movement slider 206 of the lateral movement mechanism 2. There are multiple connecting blocks 10, which are connected in series by the connector plate 5. A rotary motor 9 is installed on the front surface of each connecting block 10, and a mounting bracket 8 is installed on the output shaft of the rotary motor 9. The mounting bracket 8 is used to install the laser 7.

[0018] The laser 7 of this invention can be used alone or in multiples simultaneously. The laser 7 can cut cement-stabilized crushed stone base layers to a depth of approximately 20cm.

[0019] In use, the lifting mechanism 4 first moves the laser 7 on the transverse mechanism 2 to a suitable height. Then, the transverse mechanism 2 adjusts the laser 7 to a suitable position. When multiple gaps need to be cut on the road base at the same time, multiple lasers 7 can be connected in series by the plug-in plate 5. The plug-in plate 5 is a sleeve-type plug-in plate, which can adjust the distance between adjacent lasers 7. In addition, the rotary motor 9 can also adjust the operating angle of a single laser 7 according to the actual use.

[0020] Rotary motor 9 is a forward and reverse rotating motor.

[0021] The lifting mechanism 4 can be either a screw lifting mechanism or a hydraulic lifting mechanism. When a hydraulic lifting mechanism is used, it should be connected to the hydraulic system of the vehicle body.

[0022] The transverse movement mechanism 2 includes a guide rail 201, a drive motor 204, a screw 205, and a transverse movement slider 206. The front side of the guide rail 201 has a central groove 203 along the left-right direction. The screw 205 is disposed in the central groove 203 and its two ends are rotatably connected to the guide rail 201 through bearings. One end of the screw 205 extends out of the outside of the guide rail 201 and is connected to the output shaft of the drive motor 204. The drive motor 204 is mounted on the guide rail 201. The transverse movement slider 206 is threadedly connected to the screw 205. A connecting block 10 is connected to the outside of the transverse movement slider 206. A slot 1001 is provided on one side (left side or right side) of each connecting block 10. The insertion plate 5 is inserted into the slot 1001 and fixed by a set screw 6.

[0023] When the transverse mechanism 2 is working, first select the required number of connecting blocks 10 according to the needs, connect them together through the plug plate 5, and adjust the distance between two connecting blocks 10 through the plug plate 5. Then start the drive motor 204, and through the cooperation of the screw 205 and the transverse slider 206, drive the connecting blocks 10 to move laterally, thereby adjusting the position of the laser 7.

[0024] If only one laser 7 is needed, simply remove the plug-in board 5 and the extra connector 10.

[0025] Sliding grooves 202 are provided at both the upper and lower ends of the central groove 203 of the guide rail 201. Each connecting block 10 has a U-shaped structure, and its upper and lower ends are slidably connected to the sliding grooves 202. This improves the stability of the transverse mechanism 2 and the connecting blocks 10.

[0026] The plug-in plate 5 is a sleeve-type plug-in plate that can be fixed by a screw. One end of the plug-in plate 5 is plugged into the slot 1001 of the connecting block 10, and the other end of the plug-in plate 5 is fixedly connected to the adjacent connecting block 10.

[0027] The road base layer cutting machine also includes a dust collection mechanism 3, which is installed on the connecting block 10. Each laser 7 is equipped with a dust collection mechanism 3.

[0028] The dust collection mechanism 3 includes a dust collection box 301, a dust collection fan 302, a main dust collection pipe 303, and dust collection branch pipes 304. The lower ends of the two dust collection branch pipes 304 are respectively located on the left and right sides of the laser 7. The upper ends of the two dust collection branch pipes 304 converge towards the upper end of the laser 7 and connect to the main dust collection pipe 303. The main dust collection pipe 303 is connected to the dust collection fan 302, and the dust collection fan 302 is connected to the dust collection box 301.

[0029] When the dust collection mechanism 3 is in use, the dust collection fan 302 draws the impurities and dust generated near the laser 7 into the dust collection box 301 through the dust collection pipe 304.

[0030] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A road base joint cutting machine mounted on a vehicle body (1) characterised in that: It includes a lifting mechanism (4), a lateral movement mechanism (2), a plug-in plate (5), a laser (7), and a rotary motor (9); the lifting mechanism (4) is mounted on the vehicle body (1), the lateral movement mechanism (2) is mounted on the lifting slider of the lifting mechanism (4), a connecting block (10) is mounted on the lateral movement slider (206) of the lateral movement mechanism (2), and multiple connecting blocks (10) are connected in series through the plug-in plate (5). A rotary motor (9) is mounted on the front surface of each connecting block (10), and a mounting bracket (8) is mounted on the output shaft of the rotary motor (9). The mounting bracket (8) is used to mount the laser (7).

2. A road base joint cutting machine according to claim 1 wherein: The transverse mechanism (2) includes a guide rail (201), a drive motor (204), a screw (205), and a transverse slider (206). The front side of the guide rail (201) has a central groove (203) in the left-right direction. The screw (205) is set in the central groove (203) and its two ends are rotatably connected to the guide rail (201). One end of the screw (205) extends out of the outside of the guide rail (201) and is connected to the output shaft of the drive motor (204). The drive motor (204) is mounted on the guide rail (201). The transverse slider (206) is threadedly connected to the screw (205). A connecting block (10) is connected to the outside of the transverse slider (206). A slot (1001) is opened on one side of each connecting block (10). The plug plate (5) is plugged into the slot (1001) and fixed by a set screw (6).

3. A road base joint cutting machine according to claim 2, characterised in that: Slide grooves (202) are provided at both the upper and lower ends of the center groove (203) of the guide rail (201), and each connecting block (10) is a U-shaped structure, with the upper and lower ends of the connecting block (10) slidably connected to the slide groove (202).

4. A road base layer cutting machine according to claim 2, characterized in that: The plug plate (5) is a sleeve-type plug plate. One end of the plug plate (5) is plugged into the slot (1001) of the connecting block (10), and the other end of the plug plate (5) is fixedly connected to the adjacent connecting block (10).

5. A road base layer cutting machine according to claim 1, characterized in that: The road base cutting machine also includes a dust collection mechanism (3), which is installed on the connecting block (10). Each laser (7) is equipped with a dust collection mechanism (3).

6. A road base layer cutting machine according to claim 5, characterized in that: The vacuuming mechanism (3) includes a vacuum box (301), a vacuum fan (302), a main vacuum pipe (303), and vacuum branch pipes (304); the lower ends of the two vacuum branch pipes (304) are respectively located on the left and right sides of the laser (7), and the upper ends of the two vacuum branch pipes (304) converge towards the upper end of the laser (7) and connect to the main vacuum pipe (303). The main vacuum pipe (303) is connected to the vacuum fan (302), and the vacuum fan (302) is connected to the vacuum box (301).