A measuring device for asphalt pavement crack repair

Abstract

This invention relates to the field of highway maintenance technology, and particularly to an asphalt pavement crack repair and measurement device, comprising a vehicle body, a push handle, a road surface cleaning mechanism, a telescopic mechanism, a guiding and moving mechanism, and a measuring mechanism. Existing road surface crack measurement technologies require prior road surface cleaning and typically necessitate manual hand-held measurement instruments. For cracks of different sizes, frequent changes in measurement positions are required, resulting in time-consuming, labor-intensive, and inefficient measurements. The asphalt pavement crack repair and measurement device provided by this invention utilizes a road surface cleaning mechanism, a telescopic mechanism, a guiding and moving mechanism, and a measuring mechanism working together to clean the road surface. The use of three ultrasonic probes allows for multiple measurements of road surface cracks of different sizes, avoiding the time-consuming and labor-intensive problems of manual measurement. Furthermore, when the vehicle body moves along the road surface crack to change the measurement position, the probes can perform sliding compensation to remain within the crack for positioning, effectively improving measurement accuracy and efficiency.

Description

Technical Field

[0001] This invention relates to the field of highway maintenance technology, and in particular to a measuring device for repairing asphalt pavement cracks. Background Technology

[0002] Measuring the depth of cracks in asphalt pavement is an important step in assessing and maintaining the quality of asphalt pavement. In the maintenance and management of asphalt pavement, measuring the depth of cracks helps to understand the severity of cracks, assess pavement damage, and develop corresponding repair plans. The depth of cracks in asphalt pavement is generally measured by ultrasonic measurement, which is a common and effective non-destructive testing method. Ultrasonic waves travel at different speeds in different materials, and the depth of cracks can be determined by measuring the propagation time and reflection of ultrasonic waves.

[0003] In existing road crack measurement technologies, most use ultrasonic equipment to detect crack depth. Before measuring road cracks, it is usually necessary to clean the road surface with cracks using cleaning equipment to provide a good measurement environment for subsequent road crack measurement work. Moreover, road crack measurement usually requires manual operation by holding the measuring instrument and bending over. When measuring cracks of different sizes, it is necessary to frequently change the measurement position, resulting in a large workload, high labor intensity, and low measurement efficiency. Summary of the Invention

[0004] Technical problem to be solved: The asphalt pavement crack repair measuring device provided by the present invention can solve the above-mentioned problems.

[0005] Technical Solution: To achieve the above objectives, the present invention adopts the following technical solution: an asphalt pavement crack repair measuring device, comprising a vehicle body, a push handle mounted on the upper end of the vehicle body, a road cleaning mechanism mounted on the left end of the vehicle body, a telescopic mechanism mounted in the middle of the vehicle body, a guiding and moving mechanism mounted on the telescopic mechanism, and a measuring mechanism mounted on the guiding and moving mechanism. The road cleaning mechanism includes an installation groove at the left end of the vehicle body, a road cleaning section at the left end of the vehicle body, and a dust suction section mounted on the right side of the road cleaning section. The telescopic mechanism includes a circular groove at the middle of the lower end of the vehicle body, within which a secondary telescopic section is mounted. The guiding and moving mechanism includes a guide column mounted below the secondary telescopic section, a probe mounted on the lower end of the guide column, and an adaptive offset section corresponding to the guide column on the secondary telescopic section. The measuring mechanism includes a waist-shaped through hole at the middle of the guide column, within which an adaptive lifting section is mounted, and a three-dimensional measuring section on the guide column.

[0006] Preferably, the adaptive lifting part includes an annular tube slidably installed inside a waist-shaped through hole. The upper end of the outer wall of the annular tube is connected to the inner wall of the waist-shaped through hole by a compression spring. An installation column is installed in the middle of the annular tube. Supporting slide rods are symmetrically slidably installed in the annular tube. The opposite ends of the two supporting slide rods are connected to the installation column by tension springs.

[0007] Preferably, the three-dimensional measuring unit includes an extension seat installed on the lower right side of the outer wall of the guide column, an ultrasonic probe is installed through the extension seat, an annular support sleeve is fixedly sleeved on the upper end of the outer wall of the guide column, and support seats are installed on the opposite ends of the front and rear support slides. An ultrasonic probe is also installed through the lower end of the support seat. Connecting rods are respectively hinged to the upper ends of the front and rear support slides, and the ends of the front and rear connecting rods away from the corresponding support slides are both hinged to the outer wall of the annular support sleeve.

[0008] Preferably, the secondary telescopic part includes a telescopic rod slidably installed on the inner wall of the circular groove. The telescopic rod consists of a telescopic sleeve and an inner rod. The upper end of the telescopic sleeve of the telescopic rod is connected to the inner wall of the circular groove by a tension spring. An electric push rod is installed through the upper end of the inner wall of the circular groove on the vehicle body. The lower end of the telescopic end of the electric push rod is fixedly connected to the upper end face of the inner rod of the telescopic rod.

[0009] Preferably, the adaptive offset part includes a waist-shaped groove opened at the lower end of the inner rod of the telescopic rod, a guide slide rod installed on the inner wall of the waist-shaped groove, a guide column slidably sleeved on the guide slide rod, and both the front and rear ends of the outer wall of the guide column are connected to the inner wall of the waist-shaped groove by compression springs.

[0010] Preferably, the road cleaning unit includes two rotating shafts, one in the front and one in the rear, which are rotatably mounted on the left side of the lower end of the vehicle body. A disc brush is mounted on the lower end of each of the two rotating shafts. Gears are fixedly sleeved on the upper ends of the two rotating shafts. The upper ends of the two gears are rotatably attached to the lower end surface of the vehicle body and mesh with each other. A motor is mounted on the bottom end of the inner wall of the mounting groove through a motor base. The output shaft of the motor rotates through the vehicle body and is fixedly connected to any one of the rotating shafts.

[0011] Preferably, the dust collection unit includes a trapezoidal dust collection cover plate disposed on the lower side of the vehicle body to the right of the two disc brushes. A dust collection port is opened on the lower left side of the trapezoidal dust collection cover plate. A vacuum cleaner is mounted on the upper end of the inner wall of the mounting groove through a mounting seat. A dust collection pipe is installed at the lower end of the vacuum cleaner. The dust collection pipe passes through the vehicle body and is connected to the trapezoidal dust collection cover plate.

[0012] Preferably, a plurality of rectangularly distributed support columns are evenly installed at the lower end of the vehicle body, and each support column is rotatably equipped with a universal wheel with a self-locking function.

[0013] Beneficial effects: 1. The road cleaning mechanism used in the asphalt pavement crack repair measurement device provided by the present invention can clean the road surface with cracks by rotating two disc brushes in opposite directions and cooperating with a vacuum cleaner when the vehicle body is pushed, thus providing a good measurement environment for subsequent road crack measurement work.

[0014] 2. The asphalt pavement crack repair measuring device provided by this invention uses three ultrasonic probes to perform multiple measurements on pavement cracks of different sizes, effectively improving the accuracy of pavement crack measurement, avoiding the problems of large workload and high labor intensity caused by manually holding measuring instruments and bending over. Moreover, when measuring larger pavement cracks, the front and rear ultrasonic probes can achieve adaptive position compensation.

[0015] 3. The asphalt pavement crack repair measurement device provided by this invention uses a road cleaning mechanism, a telescopic mechanism, a guiding and moving mechanism, and a measuring mechanism in conjunction to clean the road surface. It uses three ultrasonic probes to perform multiple measurements on road surface cracks of different sizes, avoiding the time-consuming and labor-intensive problem of manual measurement. When the vehicle body moves along the road surface crack to change the crack measurement position, the probe can perform sliding compensation and always stay within the crack for positioning, effectively improving the measurement accuracy and efficiency. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a first three-dimensional structural schematic diagram of the present invention.

[0018] Figure 2 This is a schematic diagram of the second three-dimensional structure of the present invention.

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the present invention (implying the push handle).

[0020] Figure 4 This is the present invention. Figure 3 A magnified view of point X in the middle.

[0021] Figure 5 This is a three-dimensional structural diagram of the telescopic mechanism and the measuring mechanism in this invention.

[0022] Figure 6 This is a half-section three-dimensional structural diagram of the telescopic mechanism, the guiding and moving mechanism and the measuring mechanism in this invention.

[0023] In the diagram: 1. Vehicle body; 2. Push handle; 3. Road cleaning mechanism; 31. Mounting slot; 32. Road cleaning section; 321. Rotating shaft; 322. Disc brush; 323. Gear; 324. Motor No. 1; 33. Dust suction section; 331. Trapezoidal dust suction cover; 332. Dust suction port; 333. Vacuum cleaner; 334. Dust suction pipe; 4. Telescopic mechanism; 41. Circular groove; 42. Secondary telescopic section; 421. Telescopic rod; 422. Electric push rod; 5. Guide movement Mechanism; 51. Guide column; 52. Probe; 53. Adaptive offset part; 531. Waist-shaped slide groove; 532. Guide slide rod; 6. Measuring mechanism; 61. Waist-shaped through hole; 62. Adaptive lifting part; 621. Ring tube; 622. Mounting column; 623. Support slide rod; 63. Three-dimensional measuring part; 631. Extension seat; 632. Ultrasonic probe; 633. Ring support sleeve; 634. Support seat; 635. Connecting rod; 7. Support column; 8. Caster wheel. Detailed Implementation

[0024] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways as defined and covered by the claims.

[0025] See Figure 1 and Figure 2 A measuring device for repairing cracks in asphalt pavement includes a vehicle body 1, a push handle 2 mounted on the upper end of the vehicle body 1, a road cleaning mechanism 3 located at the left end of the vehicle body 1, a telescopic mechanism 4 located in the middle of the vehicle body 1, a guiding and moving mechanism 5 mounted on the telescopic mechanism 4, and a measuring mechanism 6 mounted on the guiding and moving mechanism 5. The road cleaning mechanism 3 includes an installation groove 31 at the left end of the vehicle body 1, a road cleaning section 32 located at the left end of the vehicle body 1, and a dust suction section 33 located to the right of the road cleaning section 32 on the vehicle body 1. The telescopic mechanism 4 includes a circular groove 41 at the middle of the lower end of the vehicle body 1, and a secondary telescopic section 42 located within the circular groove 41 on the vehicle body 1. The guiding and moving mechanism 5 includes a guide column 51 located below the secondary telescopic section 42, a probe 52 mounted at the lower end of the guide column 51, and an adaptive offset section 53 located on the secondary telescopic section 42 corresponding to the guide column 51. The measuring mechanism 6 includes a waist-shaped through hole 61 in the middle of the guide column 51, an adaptive lifting part 62 is provided in the waist-shaped through hole 61, and a three-way measuring part 63 is provided on the guide column 51.

[0026] See Figure 1 and Figure 2 The vehicle body 1 has multiple rectangular support columns 7 evenly installed at its lower end, and each support column 7 has a self-locking universal wheel 8 rotatably installed at its lower end.

[0027] See Figures 1-3The road cleaning unit 32 includes two rotating shafts 321 rotatably mounted on the lower left side of the vehicle body 1. A disc brush 322 is mounted on the lower end of each of the two rotating shafts 321. Gears 323 are fixedly sleeved on the upper ends of the two rotating shafts 321 respectively. The upper ends of the two gears 323 are rotatably attached to the lower end surface of the vehicle body 1 and mesh with each other. A motor 324 is mounted on the bottom end of the inner wall of the mounting groove 31 through a motor base. The output shaft of the motor 324 rotatably passes through the vehicle body 1 and is fixedly connected to any one of the rotating shafts 321.

[0028] See Figures 1-3 The dust collection unit 33 includes a trapezoidal dust collection cover 331 located on the lower side of the vehicle body 1 to the right of the two disc brushes 322. A dust collection port 332 is provided on the lower left side of the trapezoidal dust collection cover 331. A vacuum cleaner 333 is installed on the upper end of the inner wall of the mounting groove 31 via a mounting seat. A vacuum cleaner pipe 334 is installed on the lower end of the vacuum cleaner 333. The vacuum cleaner pipe 334 passes through the vehicle body 1 and is connected to the trapezoidal dust collection cover 331.

[0029] First, the vehicle body 1 is manually pushed to the location on the road surface where cracks need to be measured using push handle 2. Then, the connected rotating shaft 321 is rotated by motor 324. This rotating shaft 321 drives the corresponding gear 323 to rotate. At the same time, the two front and rear gears 323 drive another gear 323 to rotate in the opposite direction. At this time, the two rotating shafts 321 will drive the corresponding disc brushes 322 to rotate in opposite directions, thereby brushing the dust on the road surface towards the center of the dust collection hood. Then, the vacuum cleaner 333 is controlled to clean the road surface through the suction pipe 334. Dust on the surface is sucked into the dust collection hood and transported by the dust collection pipe 334 to the vacuum cleaner 333 for centralized processing. When the vehicle body 1 moves to the position where the road surface cracks need to be measured, multiple universal wheels 8 are controlled to lock themselves to prevent the position of the vehicle body 1 from shifting. At the same time, the first motor 324 and the vacuum cleaner 333 are controlled to stop working. When the vehicle body 1 is pushed, the road surface cleaning mechanism 3 can clean the road surface with cracks by rotating two disc brushes 322 in opposite directions and cooperating with the vacuum cleaner 333, thus providing a good measurement environment for subsequent road crack measurement work.

[0030] See Figure 2 , Figure 3 , Figure 5 and Figure 6 The secondary telescopic part 42 includes a telescopic rod 421 slidably installed on the inner wall of the circular groove 41. The telescopic rod 421 is composed of a telescopic sleeve and an inner rod. The upper end of the telescopic sleeve of the telescopic rod 421 is connected to the inner wall of the circular groove 41 by a tension spring. An electric push rod 422 is installed through the upper end of the inner wall of the circular groove 41 on the vehicle body 1. The lower end of the telescopic end of the electric push rod 422 is fixedly connected to the upper end face of the inner rod of the telescopic rod 421.

[0031] See Figures 4-6 The adaptive lifting part 62 includes an annular tube 621 slidably installed inside a waist-shaped through hole 61. The upper end of the outer wall of the annular tube 621 is connected to the inner wall of the waist-shaped through hole 61 by a compression spring. An installation post 622 is installed in the middle of the annular tube 621. Supporting slide rods 623 are symmetrically slidably installed in the annular tube 621. The opposite ends of the two supporting slide rods 623 are connected to the installation post 622 by a tension spring.

[0032] See Figure 2 and Figures 4-6 The three-dimensional measuring unit 63 includes an extension seat 631 installed on the lower right side of the outer wall of the guide column 51. An ultrasonic probe 632 is installed through the extension seat 631. An annular support sleeve 633 is fixedly sleeved on the upper end of the outer wall of the guide column 51. Support seats 634 are installed on the opposite ends of the front and rear support slide rods 623. An ultrasonic probe 632 is also installed through the lower end of the support seat 634. Connecting rods 635 are respectively hinged to the upper ends of the front and rear support slide rods 623. The ends of the front and rear connecting rods 635 away from the corresponding support slide rods 623 are both hinged to the outer wall of the annular support sleeve 633.

[0033] When the vehicle body 1 moves to the position where the road surface crack needs to be measured, the electric push rod 422 is controlled to drive the inner rod of the telescopic rod 421 to move downward until the guide column 51 drives the corresponding ultrasonic probe 632 to fit against the road surface through the extension seat 631. At this time, the inner rod of the telescopic rod 421 will drive the probe 52 to move downward through the guide column 51 and let it probe into the road surface crack. When measuring a smaller road surface crack, under the action of the compression spring and the two front and rear tension springs, the annular tube 621 slides to the bottom position inside the waist-shaped through hole 61. The two front and rear support slide rods 623 are in a close-to-each-other state, and the two front and rear support slide rods 623 respectively drive the corresponding ultrasonic probe 632 to move downward with the guide column 51 through the corresponding support seat 634. This achieves that the two front and rear ultrasonic probes 632 and the middle ultrasonic probe 632 are all in contact with the road surface. The two front and rear ultrasonic probes 632 and the middle ultrasonic probe 632 can be controlled to measure the depth of the crack.

[0034] When measuring larger road surface cracks, the electric push rod 422 drives the inner rod of the telescopic rod 421 downwards. The inner rod of the telescopic rod 421, through the guide column 51, drives the probe 52 downwards and inserts it into the road surface crack. The guide column 51 continues to move downwards, also inserting itself into the crack. At this time, the guide column 51, through the extension seat 631, drives the corresponding ultrasonic probe 632 to follow and insert into the crack. During this process, the two ultrasonic probes 632 will first adhere to the road surface, located on the front and rear sides of the crack, respectively. Because the guide column 51 continuously... Moving downwards, under the action of the compression spring and the two tension springs at the front and rear, the annular tube 621 will slide upwards along the waist-shaped through hole 61 to perform adaptive compensation. The two connecting rods 635 at the front and rear will rotate around the annular support sleeve 633 respectively to perform rotation compensation. At this time, the two support sliding rods 623 at the front and rear will gradually become a state of moving away from each other. When the guide column 51 drives the probe 52 to move downwards and make it probe into a suitable position in the road surface crack, the electric push rod 422 is controlled to stop working. Then, the two ultrasonic probes at the front and rear and the ultrasonic probe 632 in the middle are controlled to measure the depth of the crack respectively.

[0035] The telescopic mechanism 4, the guiding and moving mechanism 5, and the measuring mechanism 6 work together to use three ultrasonic probes 632 to perform multiple measurements on road surface cracks of different sizes. This effectively improves the accuracy of road surface crack measurement and avoids the problems of large workload and high labor intensity caused by manually holding measuring instruments and bending over. Furthermore, when measuring larger road surface cracks, the front and rear ultrasonic probes 632 can achieve adaptive position compensation.

[0036] See Figure 2 , Figure 4 and Figure 6 The adaptive offset part 53 includes a waist-shaped slide groove 531 opened at the lower end of the inner rod of the telescopic rod 421. A guide slide rod 532 is installed on the inner wall of the waist-shaped slide groove 531. The guide column 51 is slidably sleeved on the guide slide rod 532, and both the front and rear ends of the outer wall of the guide column 51 are connected to the inner wall of the waist-shaped slide groove 531 by compression springs.

[0037] It should be noted that when it is necessary to continue to move the vehicle body 1 along the road surface crack to change the crack measurement position, the electric push rod 422 can be controlled to drive the inner rod of the telescopic rod 421 to move upward until the extension seat 631 is no longer in contact with the road surface. At this time, the lower end of the probe 52 is still inserted into the crack for positioning. Then, the vehicle body 1 is pushed to move along the road surface crack. During this period, under the action of the compression spring, the probe 52 will drive the guide column 51 to slide along the guide slide rod 532 for compensation.

[0038] Repeating the above operations allows for repeated measurements of road surface cracks. The road surface cleaning mechanism 3, telescopic mechanism 4, guide movement mechanism 5, and measuring mechanism 6 work together to clean the road surface. Using three ultrasonic probes 632, multiple measurements of road surface cracks of different sizes can be performed, avoiding the time-consuming and labor-intensive problem of manual measurement. Furthermore, when the vehicle body 1 moves along the road surface crack to change the crack measurement position, the probe 52 can perform sliding compensation to always remain within the crack for positioning, effectively improving measurement accuracy and efficiency.

[0039] In the description of the embodiments of the present invention, it should be noted that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not 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 on the embodiments of the present invention. Furthermore, in the description of the present invention, unless otherwise stated, "multiple," "multiple roots," and "multiple groups" mean two or more.

[0040] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0041] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A measuring device for repairing cracks in asphalt pavement, comprising a vehicle body (1), wherein a push handle (2) is mounted on the upper end of the vehicle body (1), characterized in that, The vehicle body (1) is provided with a road cleaning mechanism (3) at the left end, a telescopic mechanism (4) is provided in the middle of the vehicle body (1), a guide moving mechanism (5) is provided on the telescopic mechanism (4), and a measuring mechanism (6) is provided on the guide moving mechanism (5). The road cleaning mechanism (3) includes an installation slot (31) opened at the left end of the vehicle body (1), a road cleaning part (32) is provided at the left end of the vehicle body (1), and a dust suction part (33) is provided on the right side of the road cleaning part (32) of the vehicle body (1). The telescopic mechanism (4) includes a circular groove (41) opened in the middle of the lower end of the vehicle body (1), and a secondary telescopic part (42) is provided in the circular groove (41) of the vehicle body (1). The guide moving mechanism (5) includes a guide column (51) provided on the lower side of the secondary telescopic part (42), a probe (52) is installed at the lower end of the guide column (51), and an adaptive offset part (53) is provided on the secondary telescopic part (42) corresponding to the guide column (51). The measuring mechanism (6) includes a waist-shaped through hole (61) in the middle of the guide column (51), an adaptive lifting part (62) is provided in the waist-shaped through hole (61), and a three-way measuring part (63) is provided on the guide column (51). The adaptive lifting part (62) includes an annular tube (621) slidably installed inside a waist-shaped through hole (61). The upper end of the outer wall of the annular tube (621) is connected to the inner wall of the waist-shaped through hole (61) by a compression spring. An installation column (622) is installed in the middle of the annular tube (621). Support slide rods (623) are symmetrically slidably installed in the annular tube (621). The opposite ends of the two support slide rods (623) are connected to the installation column (622) by a tension spring. The three-dimensional measuring unit (63) includes an extension seat (631) installed on the lower right side of the outer wall of the guide column (51). An ultrasonic probe (632) is installed through the extension seat (631). An annular support sleeve (633) is fixedly sleeved on the upper end of the outer wall of the guide column (51). Support seats (634) are installed on the opposite ends of the front and rear support slides (623). An ultrasonic probe (632) is also installed through the lower end of the support seat (634). Connecting rods (635) are respectively hinged to the upper ends of the front and rear support slides (623). The ends of the front and rear connecting rods (635) away from the corresponding support slides (623) are both hinged to the outer wall of the annular support sleeve (633).

2. The asphalt pavement crack repair measuring device according to claim 1, characterized in that: The secondary telescopic part (42) includes a telescopic rod (421) slidably installed on the inner wall of the circular groove (41). The telescopic rod (421) is composed of a telescopic sleeve and an inner rod. The upper end of the telescopic sleeve of the telescopic rod (421) is connected to the inner wall of the circular groove (41) by a tension spring. An electric push rod (422) is installed through the upper end of the inner wall of the circular groove (41) of the vehicle body (1). The lower end of the telescopic end of the electric push rod (422) is fixedly connected to the upper end surface of the inner rod of the telescopic rod (421).

3. The asphalt pavement crack repair measuring device according to claim 2, characterized in that: The adaptive offset part (53) includes a waist-shaped slide groove (531) opened at the lower end of the inner rod of the telescopic rod (421). A guide slide rod (532) is installed on the inner wall of the waist-shaped slide groove (531). The guide column (51) is slidably sleeved on the guide slide rod (532), and both the front and rear ends of the outer wall of the guide column (51) are connected to the inner wall of the waist-shaped slide groove (531) by compression springs.

4. The asphalt pavement crack repair measuring device according to claim 1, characterized in that: The road cleaning unit (32) includes two rotating shafts (321) mounted on the left side of the lower end of the vehicle body (1). A disc brush (322) is installed at the lower end of each of the two rotating shafts (321). Gears (323) are fixedly sleeved on the upper ends of the two rotating shafts (321). The upper ends of the two gears (323) are rotatably attached to the lower end surface of the vehicle body (1) and the two gears (323) mesh with each other. A motor (324) is installed at the bottom of the inner wall of the mounting groove (31) through a motor base. The output shaft of the motor (324) rotates through the vehicle body (1) and is fixedly connected to any one of the rotating shafts (321).

5. The asphalt pavement crack repair measuring device according to claim 4, characterized in that: The dust collection unit (33) includes a trapezoidal dust collection cover (331) located on the lower side of the vehicle body (1) to the right of two disc brushes (322). A dust collection port (332) is provided on the lower left side of the trapezoidal dust collection cover (331). A vacuum cleaner (333) is installed on the upper end of the inner wall of the mounting groove (31) via a mounting seat. A vacuum cleaner pipe (334) is installed on the lower end of the vacuum cleaner (333). The vacuum cleaner pipe (334) passes through the vehicle body (1) and is connected to the trapezoidal dust collection cover (331).

6. The asphalt pavement crack repair measuring device according to claim 1, characterized in that: The lower end of the vehicle body (1) is uniformly equipped with multiple rectangular support columns (7), and the lower end of each support column (7) is rotatably equipped with a universal wheel (8) with a self-locking function.

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