Self-broadening repairing piece for asphalt pavement cracks

Abstract

The utility model discloses a self-broadening repairing piece for asphalt pavement cracks. At present, in the asphalt filling process for different types of cracks, a crack expanding cleaning procedure and a synchronous compaction procedure before asphalt filling cannot be matched in time, so that a deep crack has a filling blind area, and the filling quality is influenced. The asphalt feeding device comprises a feeding frame, a handheld rod, a connecting plate, a crack stretching-in head and an enclosing plate, a square inner cavity of the feeding frame is an asphalt containing cavity, one end of the feeding frame is an advancing end, and the handheld rod is obliquely arranged on the outer wall of the other end of the feeding frame; a connecting plate is fixedly connected into the feeding frame, the connecting plate is arranged close to the advancing end of the feeding frame, a crack stretching-in head is arranged on the bottom surface of the connecting plate in a sliding fit mode, the crack stretching-in head slides in a reciprocating mode in the width direction of the feeding frame, and when the enclosing plate is connected with the feeding frame, the self-broadening repairing part is in the use state of flatly spreading asphalt; and when the enclosing plate is separated from the material supply frame, the stretching-in head for the crack is in an exposed grounding use state.

Description

Technical Field

[0001] The utility model belongs to the technical field of road repair, and in particular relates to a self-widening repair piece for cracks in asphalt pavement. Background Art

[0002] Asphalt pavement refers to various types of pavement constructed by mixing road asphalt with mineral materials. Asphalt pavement construction methods primarily include spraying, layering, and hot-mix asphalt. During construction, every step, including mixing, transporting, spreading, and compacting, requires strict control to ensure pavement quality. Common defects such as rutting, cracks, and potholes may develop during asphalt pavement use. These defects are related to a variety of factors, including vehicle loads, environmental factors, and construction quality. To prevent these defects, a series of measures are necessary, including strengthening construction quality control, selecting high-quality materials, and rationally designing pavement structures. Routine maintenance and repairs are also essential. These include cleaning and addressing defects such as oil spills, cracks, and loose surfaces. Minor repairs include patching potholes, subsidence, and addressing ripples and undercuts.

[0003] When repairing cracks in asphalt pavement, different repair methods are used depending on the type of crack. Small and medium-sized cracks can be repaired using sealants, hot-melt paint or grouting, while cracks with wider widths require more complex methods such as crack fillers, crack cutting repairs, and thermal regeneration repairs. The current tools for filling frames continuously inject asphalt into the frame, and the asphalt in the frame is filled into the cracks under the frame by its own weight. There is a lack of relevant auxiliary structures that can clean the cracks in time before and after the asphalt is injected into the cracks. As a result, the depth of the asphalt injected into the cracks is unknown and difficult to be discovered in time due to the uneven injection of asphalt. At present, in the process of injecting asphalt into cracks of different forms, there is no timely coordination with the expansion and cleaning process before asphalt injection and the synchronous compaction process, resulting in the existence of injection blind spots in deep cracks, affecting the injection quality, and lack of unified and standardized operations for cracks of different depths and directions. Utility Model Content

[0004] The purpose of the utility model is to provide a self-widening repair piece for cracks in asphalt pavement, so as to solve the above-mentioned problems.

[0005] A self - widening repair part for asphalt pavement cracks, comprising a feeding frame, a hand - held rod, a connecting plate, a crack - inserting head and an enclosing plate. The feeding frame is a square frame body. The top opening of the feeding frame is an asphalt injection port, and the square inner cavity of the feeding frame is an asphalt accommodating cavity. One end of the feeding frame is the advancing end, and a hand - held rod is inclinedly arranged on the outer wall of the other end of the feeding frame. One end of the hand - held rod is fixedly connected to the outer wall of the feeding frame, and the other end of the hand - held rod is the force - applying end; A connecting plate is fixedly connected inside the feeding frame. The connecting plate is arranged close to the advancing end of the feeding frame. A crack - inserting head is slidably fitted on the bottom surface of the connecting plate. The crack - inserting head reciprocates along the width direction of the feeding frame. The bottom of the feeding frame is detachably connected with an enclosing plate. When the enclosing plate is connected to the feeding frame, the self - widening repair part is in the state of spreading asphalt for use; When the enclosing plate is separated from the feeding frame, the crack - inserting head is in the state of being exposed and grounded for use.

[0006] As a preferred solution: The crack - inserting head includes a moving cylinder and a spherical body. The moving cylinder is vertically arranged, and an arc - shaped groove is machined on the outer wall of the moving cylinder along its outer circumferential direction. The lower end of the moving cylinder is fixedly connected with a spherical body.

[0007] As a preferred solution: The connecting plate is machined with a sliding long hole along its plate thickness direction. The length direction of the sliding long hole is the same as the length direction of the feeding frame. The crack - inserting head is arranged in the sliding long hole and reciprocates along the length direction of the sliding long hole.

[0008] As a preferred solution: The inner side wall of the sliding long hole is provided with an arc - shaped outer convex strip that matches the arc - shaped groove.

[0009] As a preferred solution: The enclosing plate includes a U - shaped bottom frame body, a bottom plate and two clamping plates. The U - shaped bottom frame body is horizontally arranged. A bottom plate is integrally connected at the opening of the U - shaped bottom frame body. A strip - shaped groove that matches the sliding long hole is machined on the top surface of the bottom plate. One clamping plate is vertically arranged on each side of the top surface of the U - shaped bottom frame body. Each clamping plate is detachably connected to the side wall of the feeding frame close to it. When the enclosing plate is connected to the feeding frame, each clamping plate is connected to the feeding frame close to it, the bottom plate is closely attached to the bottom surface of the connecting plate, and the bottom surface of the U - shaped bottom frame body is the asphalt pressing surface. When the enclosing plate is separated from the feeding frame, the bottom surface of the feeding frame, the bottom surface of the connecting plate and the crack - inserting head cooperate to form a crack - widening pressing surface.

[0010] As a preferred solution: A pressing plate is arranged inside the feeding frame. The pressing plate is horizontally arranged inside the feeding frame, close to the hand - held rod. An asphalt accommodating and spreading gap is formed between the bottom surface of the pressing plate and the inner wall of the feeding frame.

[0011] Compared with the prior art, the beneficial effects of the present utility model are:

[0012] The utility model can realize the cleaning and squeezing effect before and after the asphalt is injected into the cracks of the asphalt pavement through the mutual cooperation among the feeding frame, the hand-held rod, the connecting plate, the crack insertion head and the enclosing plate, which is beneficial to further squeeze the asphalt to the deeper position of the crack, reduce the excessive accumulation of asphalt on the surface of the crack of the pavement, and the appearance of blind spots where no asphalt enters the deep position, thereby improving the quality of crack repair and unified operation, and improving the self-interference treatment method of auxiliary asphalt injection.

[0013] The utility model can repair road cracks by keeping the crack insertion head in the crack under the pressure of the feeding frame's own weight. The crack insertion head slidingly cooperates with the connecting plate in the direction of the road crack, thereby forming a horizontal reciprocating movement mode of the crack insertion head along different directions and shapes, thereby improving the multiple usage functions of the feeding frame and realizing multiple repair working modes of injecting asphalt, reducing the irregular repair situation caused by manual intervention, and improving the uniform repair quality of medium and large cracks and spider-web cracks. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] For ease of explanation, the present invention is described in detail with reference to the following specific embodiments and accompanying drawings.

[0015] Figure 1 This is a schematic diagram of the main structure of a self-widening patch for asphalt pavement cracks;

[0016] Figure 2 A schematic diagram of the three-dimensional structure of a self-widening repair piece for asphalt pavement cracks;

[0017] Figure 3 This is a schematic diagram of the feeding frame when viewed from above;

[0018] Figure 4 This is a schematic diagram of the main structure of the first form of the penetration head for cracks, with only a portion of the moving cylinder shown;

[0019] Figure 5 This is a schematic diagram of the main structure of the second form of the insertion head for cracks, with only a portion of the moving cylinder shown;

[0020] Figure 6 It is a schematic diagram of the main structure of the connection relationship between the feeding frame, the hand-held rod and the enclosing plate;

[0021] Figure 7 A bottom-up structural diagram illustrating the connection between the feed frame and the enclosing plate;

[0022] Figure 8 A schematic top view of the connection between the feed frame, the connecting plate and the enclosing plate;

[0023] Figure 9 Schematic diagram of the three-dimensional structure of the enclosed panel

[0024] Figure 10 It is a three-dimensional structural schematic diagram of the connection relationship among the feeding frame, the handheld rod, the connecting plate and the pressing plate;

[0025] Figure 11 It is a sectional structural schematic diagram of the connection relationship among the feeding frame, the connecting plate and the pressing plate.

[0026] In the figure: 1 - feeding frame; 2 - handheld rod; 3 - connecting plate; 4 - crack insertion head; 4-1 - moving cylinder; 4-2 - spherical body; 4-3 - arc groove; 4-4 - conical body; 5 - enclosing plate; 5-1 - U-shaped bottom frame body; 5-2 - bottom plate; 5-3 - clamping plate; 6 - sliding long hole; 7 - pressing plate; 8 - strip groove; 9 - asphalt containing paving gap. Specific embodiments

[0027] To make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be described below through specific embodiments shown in the attached drawings. However, it should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present utility model. The structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present utility model. Therefore, they do not have a substantial technical meaning. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessarily confusing the concept of the present utility model.

[0028] Here, it also needs to be noted that in order to avoid obscuring the present utility model due to unnecessary details, only the structures and / or processing steps closely related to the solution of the present utility model are shown in the drawings, and other details less related to the present utility model are omitted.

[0029] Specific embodiment one: Combine Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 and Figure 11Explain this embodiment, this embodiment includes a feeding frame 1, a hand-held rod 2, a connecting plate 3, a crack insertion head 4 and an enclosing plate 5, the feeding frame 1 is a square frame, the top opening of the feeding frame 1 is an asphalt injection port, the square inner cavity of the feeding frame 1 is an asphalt holding cavity, one end of the feeding frame 1 is a forward end, and a hand-held rod 2 is obliquely provided on the outer wall of the other end of the feeding frame 1, one end of the hand-held rod 2 is fixedly connected to the outer wall of the feeding frame 1, and the other end of the hand-held rod 2 is a force-applying end; the feeding frame 1 is fixedly connected with a connecting plate 3, which is arranged near the forward end of the feeding frame 1. A crack insertion head 4 is slidably provided on the bottom surface of the connecting plate 3. The crack insertion head 4 slides back and forth along the width direction of the feeding frame 1. The bottom of the feeding frame 1 is detachably connected with an enclosing plate 5. When the enclosing plate 5 is connected to the feeding frame 1, the self-widening repair piece is in a state of spreading asphalt; when the enclosing plate 5 is separated from the feeding frame 1, the crack insertion head 4 is in an exposed and grounded state of use.

[0030] Furthermore, the worker pours asphalt slurry into the feeding frame 1 through the asphalt injection port on the top of the feeding frame 1, and then pushes the feeding frame 1 forward along the position of the road crack by holding the handle 2. As the feeding frame 1 moves, the crack insertion head 4 at the forward end of the feeding frame 1 first passes through the crack, realizing the pioneer cleaning process of the inner wall of the crack. Then, in the crack area after the crack insertion head 4 passes, asphalt flows out from the bottom of the feeding frame 1 and is poured in, which can improve the quality of the crack repair. When encountering a crack area with a deeper depth, When the asphalt is in the crack area, the crack insertion head 4 and the asphalt are operated alternately in the same crack area by repeatedly moving the feeding frame 1, so that a certain amount of asphalt leaked from the bottom of the feeding frame 1 can be pressed by the crack insertion head 4 to form a new injection gap, and then a certain amount of asphalt leaked from the bottom of the feeding frame 1 again and pressed by the crack insertion head 4 again, which is conducive to the penetration of asphalt into the deep cracks, avoiding the surface tension of the road surface cracks during the asphalt slurry injection process and causing the asphalt injection amount to be blocked. The crack insertion head 4 plays the role of breaking the tension at the cracks.

[0031] In addition, during the repair period, the crack insertion head 4 can be used to clean the residue inside the crack first, and the cracks with different widths at different positions can be uniformly widened. The widening width is the outer diameter size of the crack insertion head 4, thereby ensuring that the cracks have a uniform width form, avoiding the crack width being too small, resulting in the injection position of asphalt being too narrow and blocked, and enhancing the bonding strength between the asphalt and the inner wall of the crack, thereby significantly improving the service life and driving comfort of the asphalt pavement.

[0032] In this embodiment, the enclosing plate 5 is clamped on the bottom of the feeding frame 1. When the enclosing plate 5 is connected to the bottom of the feeding frame 1, the crack can be covered by the insertion head 4, so that the asphalt can be spread evenly, avoiding the uneven spreading phenomenon caused by the protrusion of the insertion head 4 for the crack. When the enclosing plate 5 is separated from the bottom of the feeding frame 1, the insertion head 4 for the crack can be exposed, so that the crack can be expanded and cleaned by the insertion head 4 for the crack. The insertion head 4 for the crack slides back and forth along the width direction of the feeding frame 1, so as to avoid being restricted by the different directions of the cracks during the cleaning process, and ensure that the method of promoting the cleaning of residues in the cracks is unified, thereby forming an integrated processing mode of cleaning, spreading and pressing, reducing the tediousness of related coordination operations, and helping to reduce labor costs.

[0033] The moving trajectory of the crack insertion head 4 in the present invention is determined by the direction and shape of the crack in which it is located. The crack insertion head 4 is pressed into the crack by the cooperation of the feeding frame 1 and the hand-held rod 2. Through the movement of the crack insertion head 4, the side wall of the crack is scraped against the side wall of the crack, which is beneficial to the standardized and uniform cleaning of the flatness of the crack side wall. For cracks with relatively smaller crack widths, uniform widening can be performed, and debris blocks in loose positions on the crack side walls can be squeezed and collided to clean them. For cracks with larger crack widths, internal residues can be pushed and cleaned to avoid excess residues remaining in the cracks after repair, thereby providing a favorable and unified structure to be paved for the subsequent unified spreading of asphalt.

[0034] During use, the utility model combines cleaning and filling into an integrated processing method, thereby improving the repair efficiency and quality. While cleaning the cracks, the asphalt is spread and pressed at the corresponding positions. When the cleaning function is not in use, the enclosing plate 5 is used to cover the cracks with the insertion head 4, thereby performing the basic use state of flattening the cracks, and maintaining the basic paving function for road cracks that do not require penetration, widening and cleaning.

[0035] Specific embodiment 2: This embodiment is a further limitation of specific embodiment 1. In this embodiment, the crack insertion head 4 includes a movable column 4-1 and a spherical body 4-2. The movable column 4-1 is vertically arranged, and the outer wall of the movable column 4-1 is processed with an arc groove 4-3 along its outer circumferential direction. The lower end of the movable column 4-1 is fixedly connected to the spherical body 4-2.

[0036] Furthermore, the arc groove 4-3 on the movable column 4-1 can ensure that the crack insertion head 4 slides with the bottom of the connecting plate 3. The connection method is reasonable to avoid accidental falling off during sliding. The spherical body 4-2 can be used to push and clean the residues in the crack, thereby ensuring that the tedious cleaning operation process is reduced during use. The crack insertion head 4 also includes a cone 4-4, which can replace the spherical body 4-2 to clean the residues in the crack. The spherical body 4-2 can clean shallow cracks, and the cone 4-4 can clean deeper cracks, thereby ensuring that deeper cracks that cannot be cleaned by the spherical body 4-2 can be pushed and cleaned by the cone 4-4.

[0037] Furthermore, the crack insertion head 4 can be detachably connected to the connecting plate 3 to facilitate replacement of the crack insertion head 4.

[0038] Specific embodiment three: This embodiment is a further limitation of specific embodiment two. In this embodiment, the connecting plate 3 is processed with a long sliding hole 6 along its plate thickness direction. The length direction of the long sliding hole 6 is in the same direction as the length direction of the feeding frame 1. The crack insertion head 4 is arranged in the long sliding hole 6, and the crack insertion head 4 slides back and forth along the length direction of the long sliding hole 6.

[0039] Furthermore, the arc groove 4-3 on the movable column 4-1 cooperates with the sliding long hole 6 to enable the crack insertion head 4 to slide back and forth along the length direction of the sliding long hole 6. During use by the staff, the weight of the feeding frame 1 and the asphalt therein squeezes the crack insertion head 4 into the crack, thereby ensuring that in the process of pushing and cleaning the cracks, different areas of each crack can be cleaned due to the different directions of the cracks, and the movement mode is flexible and passively limited along the direction of the cracks.

[0040] Specific embodiment 4: This embodiment is a further limitation of specific embodiment 3. In this embodiment, the inner side wall of the sliding long hole 6 is provided with an arc-shaped outer convex strip that matches the arc-shaped groove 4-3.

[0041] Furthermore, the arc-shaped outer convex strip is connected with the arc-shaped groove 4-3, thereby avoiding slipping during the push cleaning period, and can make the crack insertion head 4 firmly connected with the connecting plate 3, and the cleaning process is smooth, avoiding the occurrence of jamming during use, thereby ensuring that the staff can push the crack cleaning degree without restriction and continuously and effectively during use.

[0042] Embodiment 5: This embodiment is a further limitation of Embodiment 1, 2, 3 or 4. In this embodiment, the enclosing plate 5 includes a U-shaped bottom frame body 5-1, a bottom plate 5-2 and two clamping plates 5-3. The U-shaped bottom frame body 5-1 is horizontally arranged, and a bottom plate 5-2 is integrally connected to the opening of the U-shaped bottom frame body 5-1. A strip-shaped groove 8 matching with the sliding long hole 6 is processed on the top surface of the bottom plate 5-2. On both sides of the top surface of the U-shaped bottom frame body 5-1, a clamping plate 5-3 is vertically arranged respectively. Each clamping plate 5-3 is detachably connected to one side wall of the feeding frame 1 close to it. When the enclosing plate 5 is connected to the feeding frame 1, each clamping plate 5-3 is connected to the feeding frame 1 close to it, and the bottom plate 5-2 is tightly attached to the bottom surface of the connecting plate 3. The bottom surface of the U-shaped bottom frame body 5-1 is an asphalt pressing surface. When the enclosing plate 5 is separated from the feeding frame 1, the bottom surface of the feeding frame 1, the bottom surface of the connecting plate 3 and the crack insertion head 4 cooperate to form an expanded crack pressing surface.

[0043] Further, the cooperation of the enclosing plate 5 can realize two working modes of the feeding frame 1. One working mode is: the clamping plate 5-3 is detachably connected to the feeding frame 1, and during the period when the crack insertion head 4 is not used, the spherical body 4-2 on the crack insertion head 4 is covered by the strip-shaped groove 8 on the bottom plate 5-2, ensuring that during the installation of the enclosing plate 5, the spherical body 4-2 on the crack insertion head 4 does not cause disturbance to the filling quality of the crack, realizing the original use mode of the feeding frame 1 in cooperation with asphalt, which is beneficial to the unified spreading and patching of shallow surface cracks.

[0044] Another working mode is: when the enclosing plate 5 is separated from the feeding frame 1, the use of the crack insertion head 4 can be ensured, so that the crack insertion head 4 expands and cleans the crack, and then the asphalt flows out through the bottom surface of the feeding frame 1 to patch and press the crack, realizing another use mode. The two use modes can be switched as needed according to requirements.

[0045] [[ID=⑨]]Embodiment 6: This embodiment is a further limitation of Embodiment 1, 2, 3 or 4. In this embodiment, a pressing plate 7 is arranged in the feeding frame 1. The pressing plate 7 is horizontally arranged in the feeding frame 1, close to the hand-held rod 2. An asphalt accommodating and spreading gap 9 is formed between the bottom surface of the pressing plate 7 and the inner wall of the feeding frame 1.

[0046] Further, the staff injects asphalt into the feeding frame 1 and pushes the feeding frame 1 forward through the hand-held rod 2 to fill the road surface crack. During the crack filling period, the asphalt flows out along the asphalt accommodating and spreading gap 9 between the bottom surface of the pressing plate 7 and the inner wall of the feeding frame 1, which is beneficial to improving the effect of asphalt compaction and flat spreading of the crack and the flatness of spreading. The length of the pressing plate 7 is one-third of the length of the feeding frame 1, avoiding that the pressing plate 7 is too long and prone to blind areas during use, which affects the quality of crack compaction and flat spreading.

[0047] The utility model can realize the process of crack repair by spreading asphalt in a single direction and moving forward. It can also realize the process of reciprocating movement to repair cracks with larger width and depth, and realize the process of multi-layer and layer-by-layer penetration of asphalt. Each time the asphalt is spread, the crack insertion head 4 is moved once to occupy the crack, which is conducive to breaking the surface injection tension.

[0048] A working principle of the utility model is as follows: for the treatment of shallow surface cracks, the enclosing plate 5 is connected to the bottom surface of the feeding frame 1, the connecting plate 3 with the crack insertion head 4 is covered by the enclosing plate 5, the feeding frame 1 is placed on the crack of the road surface, and asphalt is poured from the asphalt injection port of the feeding frame 1 into the asphalt containing cavity of the feeding frame 1. The staff pushes the feeding frame 1 with the enclosing plate 5 forward by holding one end of the handheld rod 2, and the asphalt flows out from the bottom of the enclosing plate 5 into the crack, and the asphalt in the crack is compacted by the weight of the enclosing plate 5, the feeding frame 1 and the remaining asphalt.

[0049] The second working principle of the present invention: single forward movement: first, the staff places the feeding frame 1 on the crack of the road surface, ensures that the bottom surface of the connecting plate 3 is against the crack of the road surface, and pours asphalt from the asphalt injection port of the feeding frame 1 into the asphalt containing cavity of the feeding frame 1. The staff pushes the feeding frame 1 forward by holding one end of the hand-held rod 2 so that the crack insertion head 4 is squeezed into the crack by the weight in the feeding frame 1. Then, when the staff pushes the feeding frame 1, the crack insertion head 4 will uniformly widen the cracks with smaller widths, and push and clean the internal residues of cracks with larger widths. Then, the asphalt flows into the crack through the bottom of the feeding frame 1, and the crack position treated by the crack insertion head 4 is patched. The patched asphalt is compacted by the cooperation of the feeding frame 1 and the hand-held hand-held rod 2.

[0050] The third working principle of the present invention: reciprocating movement: when encountering a crack area with a deeper crack depth, the crack insertion head 4 and asphalt are operated alternately in the same crack area by repeatedly moving the feeding frame 1, so that a certain amount of asphalt leaked from the bottom of the feeding frame 1 can be pressed through the crack insertion head 4 to form a new injection gap, and then a certain amount of asphalt is leaked from the bottom of the feeding frame 1 again, and pressed again through the crack insertion head 4, which is conducive to the asphalt penetrating into the deep crack for repair, reducing the number of blind areas for repair, and helping to reduce the space created by blind areas.

[0051] The fourth working principle of the present invention is as follows: first, the staff places the feeding frame 1 on the crack of the road surface, ensures that the bottom surface of the connecting plate 3 is against the crack of the road surface, and pours asphalt from the asphalt injection port of the feeding frame 1 into the asphalt containing cavity of the feeding frame 1. The staff pushes the feeding frame 1 forward by holding one end of the hand-held rod 2 so that the crack insertion head 4 is squeezed into the crack by the weight in the feeding frame 1. Then, when the staff pushes the feeding frame 1, the crack insertion head 4 will uniformly widen the cracks with smaller crack widths, and push and clean the internal residues of the cracks with larger crack widths. Then, the asphalt flows into the cracks through the bottom of the feeding frame 1, and the cracks treated by the crack insertion head are cleaned. The asphalt is spread at the crack position, and the spread asphalt is compacted by the cooperation of the feeding frame 1 and the hand-held handle 2. When it comes to secondary spreading, the asphalt in the feeding frame 1 is processed and connected to the bottom surface of the feeding frame 1 through the enclosing plate 5. The connecting plate 3 with the crack insertion head 4 is covered by the enclosing plate 5, and the feeding frame 1 is placed at the crack of the pavement. The asphalt is poured from the asphalt injection port of the feeding frame 1 into the asphalt containing cavity of the feeding frame 1. The staff pushes the feeding frame 1 with the enclosing plate 5 forward by holding one end of the hand-held handle 2. The asphalt flows out from the bottom of the enclosing plate 5 into the crack, and the asphalt in the crack is compacted by the weight of the enclosing plate 5, the feeding frame 1 and the remaining asphalt.

Claims

1. A self-widening patch for asphalt pavement cracks, characterized by: It includes a feeding frame (1), a handheld rod (2), a connecting plate (3), a crack insertion head (4) and an enclosing plate (5). The feeding frame (1) is a square frame body. The top opening of the feeding frame (1) is the asphalt injection port, and the square inner cavity of the feeding frame (1) is the asphalt accommodating cavity. One end of the feeding frame (1) is the advancing end, and a handheld rod (2) is inclinedly arranged on the outer wall of the other end of the feeding frame (1). One end of the handheld rod (2) is fixedly connected to the outer wall of the feeding frame (1), and the other end of the handheld rod (2) is the force application end; A connecting plate (3) is fixedly connected inside the feeding frame (1). The connecting plate (3) is arranged close to the advancing end of the feeding frame (1). A crack insertion head (4) is slidably fitted on the bottom surface of the connecting plate (3). The crack insertion head (4) reciprocates along the width direction of the feeding frame (1). The bottom of the feeding frame (1) is detachably connected with an enclosing plate (5). When the enclosing plate (5) is connected to the feeding frame (1), the self-expanding repair part is in the state of spreading asphalt for use; When the enclosing plate (5) is separated from the feeding frame (1), the crack insertion head (4) is in the exposed grounding use state.

2. The self-widening patch for asphalt pavement cracks according to claim 1, characterized in that: The crack insertion head (4) includes a moving cylinder body (4-1) and a spherical body (4-2). The moving cylinder body (4-1) is vertically arranged, and an arc groove (4-3) is machined on the outer wall of the moving cylinder body (4-1) along its outer circumferential direction. The lower end of the moving cylinder body (4-1) is fixedly connected with a spherical body (4-2).

3. The self-widening patch for asphalt pavement cracks according to claim 2, characterized in that: A sliding long hole (6) is machined along the plate thickness direction of the connecting plate (3). The length direction of the sliding long hole (6) is the same as the length direction of the feeding frame (1). The crack insertion head (4) is arranged in the sliding long hole (6), and the crack insertion head (4) reciprocates along the length direction of the sliding long hole (6).

4. The self-widening repair piece for asphalt pavement cracks according to claim 3, characterized in that: The inner side wall of the sliding long hole (6) is provided with an arc-shaped outer convex strip that matches the arc groove (4-3).

5. The self-widening patch for asphalt pavement cracks according to claim 1, characterized in that: The enclosing plate (5) includes a U-shaped bottom frame body (5-1), a bottom plate (5-2) and two clamping plates (5-3). The U-shaped bottom frame body (5-1) is horizontally arranged. A bottom plate (5-2) is integrally connected at the opening of the U-shaped bottom frame body (5-1). A strip-shaped groove (8) that matches the sliding long hole (6) is machined on the top surface of the bottom plate (5-2). One clamping plate (5-3) is vertically arranged on each side of the top surface of the U-shaped bottom frame body (5-1). Each clamping plate (5-3) is detachably connected to the side wall of the feeding frame (1) close to it. When the enclosing plate (5) is connected to the feeding frame (1), each clamping plate (5-3) is connected to the feeding frame (1) close to it. The bottom plate (5-2) is closely attached to the bottom surface of the connecting plate (3). The bottom surface of the U-shaped bottom frame body (5-1) is the asphalt pressing surface. When the enclosing plate (5) is separated from the feeding frame (1), the bottom surface of the feeding frame (1), the bottom surface of the connecting plate (3) and the crack insertion head (4) cooperate to form an expansion joint pressing surface.

6. The self-widening repair piece for asphalt pavement cracks according to claim 1, characterized in that: A pressing plate (7) is provided in the feeding frame (1), and the pressing plate (7) is horizontally arranged in the feeding frame (1). The pressing plate (7) is arranged close to the hand-held rod (2), and an asphalt paving gap (9) is formed between the bottom surface of the pressing plate (7) and the inner wall of the feeding frame (1).

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