An asphalt pavement surface transverse crack treatment device and a construction method thereof

Abstract

The application discloses a kind of asphalt pavement surface layer transverse crack processing device and its construction method, including push rack assembly, dismounting and installing the fixed frame in the rear side of vehicle frame, and front and rear sliding on the sliding frame of fixed frame;Slip cylinder one end is connected with vehicle frame, telescopic end is connected with sliding frame and drives sliding frame to move;Push rack assembly includes drive up and down and located in the telescopic component of sliding frame downside, and the push rack main body in the lower end of telescopic component;Push rack main body is arranged along the width direction of road surface, and can be pushed to the asphalt after road surface harrow loosening;By in non-stop state, push rack main body moves downward to the harrowed asphalt mixture and pushes forward, then push rack main body is lifted, moves forward, drops, and carries out anti-crack paste and paste action, then moves backward and fills coverage, realize the construction processing of transverse crack, effectively reduce construction cost, avoid downtime too long and cause paving effect is poor, suitable for small space.

Description

Technical Field

[0001] This invention relates to road construction technology, specifically to an asphalt pavement in-situ thermal recycling construction technology application field, and more specifically to an asphalt pavement surface transverse crack treatment device and its construction method. Background Technology

[0002] like Figure 7 As shown, the hot recycling unit includes a heating machine, a heating loosening machine, a mixing machine, and a paver arranged in sequence. During the construction of the on-site hot recycling product, the hot recycling construction process is as follows: heating, loosening, adding and mixing, paving and compaction. Specifically, several heating machines (3 to 4) first heat the original road surface, then the heating loosening machine heats and loosens the asphalt mixture, and collects the asphalt mixture in the middle of the vehicle body with a fixed width in a trapezoidal shape. The mixing equipment that follows closely behind adds new material and mixes the new and old materials. Finally, the paver paves and compacts the mixture. To avoid heat loss, multiple devices are arranged closely behind each other with a distance of about 0.5m between them. Therefore, the entire hot recycling construction production line has a relatively narrow front-to-back distance and is quite limited.

[0003] When there are many transverse joints in the recycled pavement and crack-resistant tape needs to be laid, the asphalt mixture pile at the transverse joint treatment location must be removed first after heating and loosening, then the crack-resistant tape is laid at the transverse joint treatment location, and then the asphalt mixture that was just removed is restored. The distance between the front and rear equipment of the hot recycling unit is too small, and the usable width of the closed road on both sides is limited. Existing construction equipment such as excavators, graders, bulldozers and other construction machinery cannot enter the limited space to work, and there is no suitable construction technology. Therefore, transverse joint construction can only be carried out by multiple people, and the entire hot recycling unit must stop moving forward for construction.

[0004] Specifically, five to six workers shovel and move the asphalt-aggregate mixture near the crack, cleaning down to the base layer, laying the crack treatment mesh, and then manually shovel the asphalt-aggregate back to its original position. This method is labor-intensive, time-consuming, and has the following drawbacks: 1. Due to the waiting time required for treating long transverse cracks, and the need for the hot recycling unit to stop moving forward, the temperature of the hot asphalt-aggregate near the transverse cracks will drop rapidly due to environmental factors (natural wind, environmental heat exchange). The temperature of the asphalt mixture being laid and compacted will be insufficient, resulting in inadequate road surface crack ratio and compaction in this transverse crack treatment section, leading to poor construction quality; 2. The entire hot recycling unit stops moving forward, increasing the ineffective working time of the unit, and requiring multiple workers to move and backfill the asphalt-aggregate, resulting in high labor intensity, long time, and high construction costs. Therefore, there is an urgent need for a low-cost transverse crack treatment device suitable for confined spaces, and a construction method that avoids excessive downtime and allows for rapid construction. Summary of the Invention

[0005] The purpose of this invention is to provide a device for treating transverse cracks in asphalt pavement. It has a simple and compact structure, enables the treatment of transverse cracks, avoids the rapid drop in temperature of asphalt aggregate due to prolonged downtime which would affect the paving effect, and effectively reduces construction costs and improves construction quality. It is also suitable for use in confined spaces.

[0006] To achieve the above objectives, an asphalt pavement transverse crack treatment device is provided, comprising a pusher assembly, a fixed frame that is disassembled and installed on the rear side of the vehicle frame, and a sliding frame that slides back and forth on the fixed frame.

[0007] One end of the sliding cylinder is connected to the chassis, and the telescopic end is connected to the sliding frame and drives the sliding frame to move.

[0008] The pusher assembly includes a telescopic component that drives the vertical lifting and is located under the sliding frame, and a pusher body located at the lower end of the telescopic component;

[0009] The main body of the pusher is arranged along the width of the road surface and can push the asphalt after it has been loosened by raking.

[0010] Furthermore, the upper end of the pusher assembly is slidably positioned on the sliding frame; the sliding frame is provided with at least one set of stroke components for increasing the travel of the pusher assembly.

[0011] The travel assembly includes a pair of chains and a pair of support wheels rotatably mounted on the front and rear sides of the sliding frame;

[0012] One chain is connected at one end to one side of the pusher assembly, and at the other end is wrapped around the outside of one of its support wheels and then connected to the fixed frame; the other chain is connected at one end to the other side of the pusher assembly, and at the other end is wrapped around the outside of another support wheel and then connected to the fixed frame.

[0013] Furthermore, the sliding frame includes a pair of first support rods arranged front to back and a second support rod connected between the pair of first support rods;

[0014] The inner side of the first frame pole is slidably located on the fixed frame, and the outer side is slidably provided with a pusher assembly; the front and rear ends of the first frame pole are provided with mounting grooves for mounting support wheels.

[0015] Furthermore, the main body of the pusher includes a main pusher located at the lower end of the telescopic assembly and a pair of auxiliary pushers that slide along the width of the road surface and are located on both sides of the main pusher.

[0016] One end of the telescopic cylinder is mounted on the main push frame, and the telescopic end is connected to the auxiliary push frame; the lower ends of the main push frame and the auxiliary push frame are respectively equipped with a first scraper and a second scraper.

[0017] Furthermore, the telescopic assembly includes a lifting frame connected to the sliding frame and a lifting rod that is mounted on the lifting frame for vertical lifting.

[0018] One end of the lifting cylinder is fixed to the lifting frame, and the telescopic end is connected to the lifting rod.

[0019] The main pusher is installed at the lower end of the lifting rod.

[0020] The present invention also aims to provide a construction method for a transverse crack treatment device for asphalt pavement surface layer. The process is simple and effective. In a non-stop state, the main body of the pusher moves downward to push the loosened asphalt mixture forward. Then, the main body of the pusher rises, moves forward, and falls, and performs the anti-crack tape application action. Finally, it moves backward to fill and cover, thereby realizing the construction treatment of transverse cracks. This effectively reduces construction costs, avoids excessive downtime, and is suitable for confined spaces.

[0021] A construction method for an asphalt pavement transverse crack treatment device specifically includes the following steps:

[0022] a. Install the transverse crack treatment device for the asphalt pavement surface layer on the rear frame of the heated rake in the hot recycling unit;

[0023] The hot recycling unit normally performs the construction work of heating, loosening, adding and mixing materials, and spreading and compacting the road surface in sequence.

[0024] Initially, the main pusher and auxiliary pusher are located above the road surface;

[0025] When the heated wall of the heated rake passes through a transverse crack, the telescopic cylinder is activated, driving the auxiliary pusher to adjust along the width of the road surface on the main pusher, so that the extension of the auxiliary pusher is consistent with the width of the recycled road surface.

[0026] b. The lifting cylinder on the lifting frame is activated, which drives the main push frame and the auxiliary push frame to descend to the preset position. During this process, the hot recycling unit moves forward at normal speed and carries out hot recycling construction. The corresponding scrapers on the main push frame and the auxiliary push frame push the loosened asphalt mixture forward to the tail of the heated loosening machine to accumulate. Then the hot recycling unit stops moving forward.

[0027] c. Then, the main push frame and the auxiliary push frame rise to the preset position under the action of the lifting cylinder, and the sliding cylinder is started, driving the sliding frame to move forward.

[0028] The lifting frame slides back and forth on the sliding frame, and one end of a pair of chains is connected to the lifting frame, and the other end is wound around the support wheels at the front / rear end of the sliding frame and connected to the fixed frame to form a closed loop, so that the lifting frame moves forward twice as much as the sliding frame to the preset position;

[0029] Then, under the action of the lifting cylinder, the main push frame and the auxiliary push frame descend to the preset position;

[0030] d. During the process of the main push frame and the auxiliary push frame rising, moving forward and falling together, the crack-resistant tape is manually placed on the transverse crack. After the crack-resistant tape is applied, the sliding cylinder drives the sliding frame to move backward, and the lifting frame moves backward with double the stroke. The asphalt mixture that has been pushed to the tail of the heating and loosening machine is pushed back to its original position by the main push frame and the auxiliary push frame, and then covered on top of the applied crack-resistant tape.

[0031] e. Finally, the lifting cylinder moves the main pusher and auxiliary pusher upwards to their initial positions to complete the treatment of the transverse cracks. The hot recycling unit then continues to proceed at normal speed for recycling operations.

[0032] Compared with existing technologies, this asphalt pavement transverse crack treatment device features a sliding cylinder that drives the sliding frame to move back and forth on the fixed frame. The pusher assembly on the sliding frame can be raised and lowered to adjust and push the loosened asphalt. The overall structure is simple and compact. Through the lowering and pushing of the pusher body, as well as its rising, forward, lowering, and backward pushing, the transverse crack treatment is now possible. This avoids the rapid drop in temperature of the asphalt aggregate due to prolonged downtime, which would affect the paving effect. It also effectively reduces construction costs and improves construction quality. In addition, the fixed frame of this device can be installed on a heated loosening machine, making it suitable for confined spaces.

[0033] Because the upper end of the pusher assembly slides back and forth on the sliding frame, and is equipped with a stroke component to increase the travel distance of the pusher assembly, that is, the lifting frame slides back and forth on the sliding frame, one end of a pair of chains is connected to the lifting frame respectively, and the other end is wound around the support wheels at the front / rear end of the sliding frame and connected to the fixed frame to form a closed loop. Therefore, when the sliding frame moves a certain distance, the pusher assembly moves twice the distance of the sliding frame. In a limited space, the working distance of the pusher assembly is increased, so that the main body of the pusher can push the asphalt mixture forward and can push it back to its original position. This reduces the distance between the heated rake and the rear feed mixer, effectively reducing the heat loss of the asphalt mixture.

[0034] This invention relates to a construction method for a transverse crack treatment device for asphalt pavement. First, while the machine is not stopped, the main body of the pusher moves downwards to push the loosened asphalt mixture forward. Then, the main body of the pusher rises, moves forward, and falls, and during the intervals between these movements, anti-crack tape is applied. Finally, the main body of the pusher moves backwards to fill and cover the cracks, achieving rapid treatment of transverse cracks. Compared with traditional methods requiring a complete shutdown and multiple operators, this method effectively reduces construction costs and avoids excessive downtime. It can be effectively installed and matched at hot recycling units and is suitable for confined spaces. Attached Figure Description

[0035] Figure 1 This is an overall schematic diagram of the present invention;

[0036] Figure 2This is a schematic diagram of the pusher assembly in this invention;

[0037] Figure 3 This is a schematic diagram of the fixing frame in this invention;

[0038] Figure 4 This is a schematic diagram of the sliding frame in this invention;

[0039] Figure 5 This is a schematic diagram of the stroke component in this invention;

[0040] Figure 6 This is a simplified schematic diagram illustrating the double travel distance of the travel component in this invention;

[0041] Figure 7 This is a layout diagram of a thermal recycling unit in traditional construction processes.

[0042] In the diagram: 1. Frame, 21. Mounting bracket, 211. First mounting plate, 212. Second mounting plate, 22. Sliding cylinder, 3. Sliding bracket, 31. First support rod, 32. Second support rod, 33. Mounting slot;

[0043] 4. Stroke assembly; 41. Support wheel; 42. Chain; 5. Push frame assembly; 51. Lifting frame; 52. Lifting cylinder; 53. Guide wheel; 54. Main push frame; 55. First scraper; 56. Secondary push frame; 57. Second scraper; 58. Telescopic cylinder; 59. Lifting rod. Detailed Implementation

[0044] The invention will be further described below with reference to the accompanying drawings, and Figure 1 The middle frame 1 has one side facing the forward direction, the fixed frame 21 is the rear side relative to the frame 1, and the main push frame 54 in the push frame assembly 5 is arranged in the direction of road width.

[0045] like Figure 1 , Figure 2 As shown, this device for treating transverse cracks in asphalt pavement includes a pusher assembly 5, a fixed frame 21 that is detachably installed on the rear side of the frame 1, and a sliding frame 3 that slides back and forth on the fixed frame 21.

[0046] One end of the sliding cylinder 22 is connected to the frame 1, and the telescopic end is connected to the sliding frame 3 and drives the sliding frame 3 to move;

[0047] The pusher assembly 5 includes a telescopic component that drives the vertical lifting and is located below the sliding frame 3, and a pusher body located at the lower end of the telescopic component;

[0048] The main body of the pusher is arranged along the width of the road surface and can push the asphalt after it has been loosened by raking.

[0049] Specifically, such as Figure 3As shown, the fixed frame 21 is an integral support and fixing structure with pin holes. The pin shaft passes through the pin holes and is installed on the frame 1 at the rear end of the heating and raking machine. The heating and raking machine drives the whole structure to move and treat the transverse cracks.

[0050] The sliding frame 3 can be adjusted in the front and rear directions, so that the push frame assembly 5 can move in the forward direction according to the construction requirements;

[0051] The pusher assembly 5 can be raised and lowered, and can move in the direction of road width. The main body of the pusher scrapes the asphalt on the road surface, that is, it pushes the loosened asphalt mixture.

[0052] In road sections undergoing hot recycling repair where transverse cracks are frequent, when it is necessary to treat transverse cracks and apply anti-crack tape during construction, the fixing frame 21 of this device is installed on the rear frame 1 of the heated rake in the hot recycling unit. The overall construction method is as follows:

[0053] Initially, the lower end of the pusher body does not contact the road surface. When the heated wall of the heated rake passes through a transverse crack, the position of the pusher body is first adjusted. That is, the telescopic component drives the pusher body to move downward to the preset position. The pusher body is arranged along the width of the road surface. Under the condition that the hot recycling unit is moving forward at normal speed for recycling construction (without stopping), the pusher body pushes the rake loosened asphalt mixture forward to the rear of the heated rake to accumulate. After the pushing operation is completed, the hot recycling unit stops moving forward.

[0054] The telescopic component drives the pusher body to rise to the preset position, the sliding cylinder 22 is activated, and the sliding frame 3 moves forward, so that the pusher component 5 moves forward to the preset position. The telescopic component then drives the pusher body to descend smoothly to the preset position.

[0055] During the process of the pusher assembly 5 rising, moving forward, and falling, the crack-resistant tape is manually placed on the transverse crack. After the crack-resistant tape is applied, the sliding cylinder 22 drives the sliding frame 3 to move backward, pushing the asphalt mixture that has been pushed to the tail of the heating and loosening machine back to its original position and covering it on top of the applied crack-resistant tape.

[0056] Then the telescopic component drives the pusher body to rise to the initial position, and the hot recycling unit moves forward at normal speed to carry out recycling construction, completing the treatment of transverse cracks in the asphalt pavement surface layer. The entire process takes about 1 minute.

[0057] It should be noted that the lifting and lowering of the telescopic component and the forward and backward movement of the sliding frame 3 to the preset position can be achieved by using sensors such as stroke sensors and displacement sensors. That is, sensors are installed and removed at appropriate positions on the fixed frame 21, the sliding frame 3, or the push frame assembly 5. The sensors are connected to the controller. After receiving the corresponding feedback signal, the controller controls the corresponding actions of the sliding cylinder 22 and the telescopic component.

[0058] This construction method for transverse cracks in asphalt pavement involves moving the main body of the pusher frame downwards while the machine is not stopped, pushing the loosened asphalt mixture forward, and then moving the main body of the pusher frame upwards, forwards, and downwards to apply anti-crack tape. Finally, it moves backwards to fill and cover the cracks, thus achieving the construction treatment of transverse cracks. This method effectively reduces construction costs, avoids the excessive downtime caused by traditional construction processes, which leads to a rapid drop in the temperature of the asphalt aggregate and affects the paving effect, improves construction quality, and is suitable for confined spaces.

[0059] like Figure 5 , Figure 6 As shown, further, the upper end of the pusher assembly 5 is slidably located on the sliding frame 3; the sliding frame 3 is provided with at least one set of stroke components 4 for increasing the moving stroke of the pusher assembly 5;

[0060] The travel assembly 4 includes a pair of chains 42 and a pair of support wheels 41 rotatably mounted on the front and rear sides of the sliding frame 3;

[0061] One end of one chain 42 is connected to one side of the pusher assembly 5, and the other end is wrapped around the outside of one of its support wheels 41 and then connected to the fixed frame 21; one end of another chain 42 is connected to the other side of the pusher assembly 5, and the other end is wrapped around the outside of another support wheel 41 and then connected to the fixed frame 21.

[0062] Specifically, the preferred travel components 4 are a pair and are arranged symmetrically in the road width direction to ensure the stability of the movement of the sliding frame 3;

[0063] like Figure 3 As shown, the fixing frame 21 is provided with a first fixing plate 211 and a second fixing plate 212 spaced apart. One chain 42 is wound around its adjacent support wheel 41 and connected to the first fixing plate 211, and the other chain 42 is wound around its adjacent support wheel 41 and connected to the second fixing plate 212.

[0064] by Figure 6As a stroke component 4 used to increase the travel stroke of the pusher assembly 5, the sliding frame 3 slides on the fixed frame 21, and the pusher assembly 5 slides on the sliding frame 3. A pair of support wheels 41 are respectively installed at both ends of the sliding frame 3. When the sliding frame 3 moves forward or backward a distance 'a' under the action of the sliding cylinder 22, a pair of chains 42 in the stroke component 4 are correspondingly wound and connected between the pusher assembly 5 and the fixed frame 21. That is, the lifting frame 51 slides back and forth on the sliding frame 3, and one end of the pair of chains 42 is connected to the lifting frame 51, and the other end is wound around the support wheels 41 at the front / rear end of the sliding frame 3. Connected to the fixed frame 21 and forming a closed loop, the pusher assembly 5 moves forward or backward a distance of 2a under the drive of a pair of chains 42. That is, the "moving pulley stroke doubling" is adopted. When the sliding frame 3 moves a certain distance, the pusher assembly 5 moves twice as much as the sliding frame 3. In a limited space, the working distance of the pusher assembly 5 is increased, and the size of the actuator (pusher body) in the pusher assembly 5 is reduced. This ensures that the pusher body can push the asphalt mixture forward and push it back to its original position, reducing the distance between the heating rake and the rear feeding and mixing machine, and effectively reducing the heat loss of the asphalt mixture.

[0065] Furthermore, such as Figure 4 As shown, the sliding frame 3 includes a pair of first frame rods 31 arranged in a front-to-back manner and a second frame rod 32 connected between the pair of first frame rods 31;

[0066] The inner side of a pair of first support rods 31 is slidably located on the fixed frame 21, and the outer side is slidably provided with a push frame assembly 5; the front and rear ends of the first support rods 31 are provided with mounting grooves 33 for mounting support wheels 41;

[0067] Specifically, the sliding frame 3 is a frame structure, and the second frame rod 32 is connected between a pair of first frame rods 31 to provide support and facilitate the installation of the sliding cylinder 22. For example, the telescopic end of the sliding cylinder 22 is installed in the middle of the second frame rod 32 through the lug to ensure force balance.

[0068] The inner sides of a pair of first support rods 31 slide between the two sides of the fixed frame 21, and the outer sides slide between the two sides of the support rods 21; the sliding method can be a linear slide rail or a guide wheel 53 in conjunction with a guide groove.

[0069] Furthermore, such as Figure 2 As shown, the main body of the pusher includes a main pusher 54 located at the lower end of the telescopic assembly and a pair of auxiliary pushers 56 that slide along the width of the road surface and are located on both sides of the main pusher 54.

[0070] One end of the telescopic cylinder 58 is mounted on the main push frame 54, and the telescopic end is connected to the auxiliary push frame 56; the lower ends of the main push frame 54 and the auxiliary push frame 56 are respectively provided with a first scraper 55 and a second scraper 57;

[0071] Specifically, when the telescopic cylinder 58 is activated, it drives the corresponding auxiliary pusher 56 to be adjusted along the width of the road surface on the main pusher 54, which can be applied to roads of different widths. The lower ends of the main pusher 54 and the auxiliary pusher 56 are respectively equipped with a first scraper 55 and a second scraper 57. The first scraper 55 and the second scraper 57 act on the asphalt mixture in a relatively even manner, thereby pushing the loosened asphalt.

[0072] Furthermore, as one embodiment, the telescopic component can be a conventional structure, such as a pair of telescopic rods with linkage control, the upper end of the telescopic rod sliding on the sliding frame 3 and the lower end connected to the main push frame 54;

[0073] In another embodiment, the telescopic assembly includes a lifting frame 51 connected to the sliding frame 3 and a lifting rod 59 that is mounted on the lifting frame 51 for vertical lifting.

[0074] One end of the lifting cylinder 52 is fixed to the lifting frame 51, and the telescopic end is connected to the lifting rod 59;

[0075] The main pusher 54 is installed at the lower end of the lifting rod 59;

[0076] When it is necessary to push the loosened asphalt on the road surface, the lifting cylinder 52 is activated, which drives the lifting rod 59 to rise and fall on the lifting frame 51, so that the main push frame 54 at the lower end of the lifting rod 59 rises and falls, thus acting on the asphalt mixture.

[0077] When using this transverse crack treatment device for asphalt pavement, the device is installed at the rear of the heated rake machine frame 1. The hot recycling unit may include a heater, a heated rake machine, a mixer, and a paver arranged in sequence. The device is used for heating, rakeing, adding and mixing, paving and compacting according to conventional construction processes. Therefore, it is suitable for use in hot recycling units where the gaps between equipment are small.

[0078] The pusher assembly 5 is located above the road surface. When the heating wall of the heating rake passes through the transverse crack, a pair of telescopic cylinders 58 are adjusted, which in turn drives the auxiliary pusher 56 to adjust along the width of the road surface so that the auxiliary pusher 56 extends to match the width of the recycled road surface. During this process, the hot recycling unit moves forward at normal speed and performs hot recycling construction.

[0079] When the scraper on the main push frame 54 is about 0.8m away from the transverse crack, the lifting cylinder 52 on the lifting frame 51 is activated, which drives the main push frame 54 and the auxiliary push frame 56 to descend to the preset position. During this process, the hot recycling unit does not stop. The corresponding scrapers on the main push frame 54 and the auxiliary push frame 56 push the loosened asphalt mixture forward. The loosened asphalt mixture within a range of about 1.5m from the transverse crack is pushed to the tail of the heated loosening machine and accumulates. At this time, the hot recycling unit stops moving forward.

[0080] The main push frame 54 and the auxiliary push frame 56 rise to the preset position under the action of the lifting cylinder 52. The sliding cylinder 22 is activated, which drives the sliding frame 3 to move forward. Since the upper end of the push frame assembly 5 (lifting frame 51) slides back and forth on the sliding frame 3, and one end of its chain 42 is connected to one side of the push frame assembly 5, and the other end is connected to the fixed frame 21 after passing around the outside of one of its support wheels 41, and one end of the other chain 42 is connected to the other side of the push frame assembly 5, and the other end is connected to the fixed frame 21 after passing around the outside of another support wheel 41, the lifting frame 51 will move forward twice as much as the sliding frame 3 to the preset position. Then, under the action of the lifting cylinder 52, the main push frame 54 and the auxiliary push frame 56 descend to the preset position.

[0081] During the process of the main pusher 54 and the auxiliary pusher 56 rising, moving forward and falling together, for example, the duration can be set to 20 seconds, two workers will cover and place the crack-resistant tape at the position of the transverse crack.

[0082] After the crack-resistant tape is applied, the sliding cylinder 22 drives the sliding frame 3 to move backward, pushing the asphalt mixture that has been pushed to the tail of the heating and loosening machine back to its original position and covering the applied crack-resistant tape.

[0083] Finally, the lifting cylinder 52 moves the main pusher 54 and the auxiliary pusher 56 upward to the preset position to complete the construction treatment of the transverse crack. The overall treatment time can be controlled within 1 minute, and the hot recycling unit can move forward at a normal speed for recycling construction.

[0084] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this 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. Therefore, they should not be construed as limitations on this invention.

Claims

1. An asphalt pavement surface transverse crack treatment device, comprising a push frame assembly (5), a fixed frame (21) detachably mounted on the rear side of a vehicle frame (1), and a sliding frame (3) sliding forward and backward on the fixed frame (21); characterized in that, a sliding oil cylinder (22) is connected at one end to the vehicle frame (1) and at the other end to the sliding frame (3) and drives the sliding frame (3) to move; the push frame assembly (5) comprises a telescopic assembly driving up and down and located on the lower side of the sliding frame (3), and a push frame body located at the lower end of the telescopic assembly; the push frame body is arranged along the width direction of the road surface and can push the raked asphalt on the road surface; the upper end of the push frame assembly (5) slides forward and backward on the sliding frame (3); the sliding frame (3) is provided with at least one stroke assembly (4) for increasing the stroke of the push frame assembly (5); the stroke assembly (4) comprises a pair of chains (42) and a pair of support wheels (41) rotatably mounted on the front and rear sides of the sliding frame (3); one end of one chain (42) is connected to one side of the push frame assembly (5) and the other end is connected to the fixed frame (21) after winding around the outside of one support wheel (41); the other end of the other chain (42) is connected to the other side of the push frame assembly (5) and the other end is connected to the fixed frame (21) after winding around the outside of the other support wheel (41).

2. The asphalt pavement surface transverse crack treatment device according to claim 1, characterized in that, The sliding frame (3) comprises a pair of first frame rods (31) arranged front and back, and a second frame rod (32) connected between the pair of first frame rods (31); the inner sides of the pair of first frame rods (31) slide on the fixed frame (21), and the outer sides are provided with the push frame assembly (5); the front and rear ends of the first frame rod (31) are provided with mounting grooves (33) for mounting the support wheel (41).

3. The apparatus for treating transverse cracks in an asphalt pavement surface layer according to any one of claims 1 or 2, characterized in that, The push frame body comprises a main push frame (54) located at the lower end of the telescopic assembly, and a pair of auxiliary push frames (56) sliding along the width direction of the road surface and located on both sides of the main push frame (54); one end of the telescopic oil cylinder (58) is mounted on the main push frame (54), and the other end is connected to the auxiliary push frame (56); the lower ends of the main push frame (54) and the auxiliary push frame (56) are respectively provided with a first scraper (55) and a second scraper (57).

4. The asphalt pavement surface transverse crack treatment device according to claim 3, characterized in that, The telescopic assembly comprises a lifting frame (51) connected to the sliding frame (3) and a lifting rod (59) telescopically mounted on the lifting frame (51); one end of the lifting oil cylinder (52) is fixed to the lifting frame (51), and the other end is connected to the lifting rod (59); the main push frame (54) is mounted on the lower end of the lifting rod (59).

5. A method of constructing a transverse crack treatment device for an asphalt pavement surface layer as claimed in claim 4, characterized in that, Specifically comprising the following steps: a. Install the asphalt pavement surface transverse crack treatment device on the tail frame (1) of the heating rake of the hot recycling machine; the hot recycling machine normally performs heating, raking, material adding, mixing, paving and compaction construction work on the road surface in turn; In the initial state, the main push frame (54) and the auxiliary push frame (56) are located above the road surface; when the heating wall of the heating rake passes through the transverse crack, the telescopic oil cylinder (58) is started, driving the auxiliary push frame (56) to adjust along the width direction of the road surface on the main push frame (54), so that the auxiliary push frame (56) extends in line with the width of the recycled pavement; b. The lifting oil cylinder (52) on the lifting frame (51) is started, driving the main push frame (54) and the auxiliary push frame (56) to descend to the pre-set position. During this process, the hot regeneration unit moves forward at normal speed and performs hot regeneration construction. The corresponding scrapers on the main push frame (54) and the auxiliary push frame (56) push the raked asphalt mixture forward to the rear of the heating rake to accumulate, and then the hot regeneration unit stops moving forward; c. Then the main push frame (54) and the auxiliary push frame (56) are raised to the pre-set position under the action of the lifting oil cylinder (52), and the sliding oil cylinder (22) is started to drive the sliding frame (3) to move forward; The lifting frame (51) slides forward and backward on the sliding frame (3), and a pair of chains (42) are connected to the lifting frame (51) at one end and to the fixed frame (21) at the other end after winding around the support wheels (41) at the front end / rear end of the sliding frame (3), forming a closed loop, so that the lifting frame (51) is double the sliding frame (3) to move forward to the pre-set position; Then the main push frame (54) and the auxiliary push frame (56) are lowered to the pre-set position under the action of the lifting oil cylinder (52); d. During the process of the main push frame (54) and the auxiliary push frame (56) rising, moving forward and descending together, the anti-crack tape is placed on the transverse crack position by hand; when the anti-crack tape is completed, the sliding oil cylinder (22) drives the sliding frame (3) to move backward, and the lifting frame (51) also moves backward with double stroke, and the asphalt mixture accumulated at the rear of the heating rake is pushed back to the original position by the main push frame (54) and the auxiliary push frame (56), and covers the anti-crack tape; e. Finally, the lifting oil cylinder (52) moves the main push frame (54) and the auxiliary push frame (56) upward to the initial position, completing the construction and processing of the transverse crack, and the hot regeneration unit continues to move forward at normal speed for regeneration construction.

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