An asphalt pavement crack repairing device and repairing method

Abstract

The application belongs to the field of asphalt pavement repairing, in particular to an asphalt pavement crack repairing device and method, which comprises an engine, the output end of the engine is fixedly connected with a horizontally arranged power shaft, one side of the engine is provided with a cutting disc, the outer side of the cutting disc is provided with a protective cover, and the side of the engine away from the power shaft is provided with a driving arm for adjusting the height of the cutting disc. Three functions of pavement cutting, damaged pavement crushing and repairing material tamping are combined by using one device, time loss caused by the need to constantly switch devices during the repairing process is greatly reduced due to the single function of the device, the transportation cost required when transporting the device is also reduced due to the small number of devices, meanwhile, one power output source can complete the driving of the three functions, thus the overall volume is reduced, the device cost is lowered, and the operation is also facilitated.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of asphalt pavement repair, in particular to an asphalt pavement crack repair device and method. BACKGROUND

[0002] Asphalt pavement refers to various types of pavement constructed by mixing road asphalt material into mineral material. The asphalt binder improves the ability of the paving granules to resist damage to the pavement caused by driving and natural factors, making the pavement smooth, less dusty, water-resistant and durable.

[0003] After long-term use, the asphalt pavement will have defects such as cracks and collapse, which need to be repaired in time. There are generally two repair methods. When the crack is small, repair material can be directly added to the crack. When the crack is large, in order to ensure long-term use, the area with defects needs to be cleaned, then the repair material is filled, and the material and the original asphalt pavement are tamped and fixed to ensure the quality of the repair.

[0004] The traditional asphalt repair process needs to first draw a rectangular frame mark on the pavement, then cut and separate the damaged asphalt pavement along the mark, then knock, shovel and clean the asphalt pavement inside the frame, then put the repair material into the cleaned frame, and finally perform multiple compaction treatment on the repair material. The use of a large number of devices is required for the entire process, and the area of the pavement that needs to be repaired is scattered. Carrying a large number of devices to the repair location for work not only occupies too much transfer space, but also makes the switching and carrying of each device more cumbersome, which is not conducive to the rapid repair process in the highway environment.

[0005] Therefore, the present application provides an asphalt pavement crack repair device and method. SUMMARY

[0006] In order to make up for the deficiencies of the prior art and solve at least one technical problem raised in the background art.

[0007] The technical scheme adopted by the present application to solve its technical problems is: the asphalt pavement crack repair device comprises an engine, a horizontal power shaft fixed to the output end of the engine, a cutting disc provided on one side of the engine, a protective cover provided on the outside of the cutting disc, a drive arm provided on the side of the engine away from the power shaft for adjusting the height of the cutting disc, a belt for transmitting power to the cutting disc sleeved on the outside of the power shaft, a tamping plate provided below the engine, a drive disc fixed to the middle part of the power shaft for driving the tamping plate to vibrate, a breaking nail provided on one side of the engine for breaking the asphalt pavement, a suction cover provided at the end of the power shaft for driving the breaking nail to lift and lower, and two electric wheels provided on the outside of the engine and capable of lifting and lowering.

[0008] The device, consisting of a tamping plate, cutting disc, and breaking nails, is placed on the road surface requiring repair. The cutting disc is aligned with pre-drawn markings, and then it begins to rotate. The drive arm adjusts the height of the cutting disc, lowering it along with the protective cover to allow the disc to cut the asphalt pavement. An engine drives a power shaft, which in turn rotates the cutting disc via a belt. An electric wheel drives the device forward, separating the asphalt in the marking area from the road surface. During this separation process, the rotation of the power shaft simultaneously rotates the suction cover, which contacts the breaking nails and moves them up and down. This allows the breaking nails to break the asphalt pavement in the marking area simultaneously with the cutting disc's movement. It is important to note that the breaking nails must be placed within the marking area, not outside it. After cutting, the drive arm adjusts the height of the cutting disc and protective cover, raising them so the cutting disc is no longer in contact with the road surface. The device is then moved within the marking area, allowing the moving breaking nails to continuously break the asphalt pavement. For safety, the cutting disc can be removed after the breaking process is complete. The electric wheels are raised so that the bottom compaction plate directly contacts the ground. The engine drives the power shaft and drive disc to rotate, which in turn drives the bottom compaction plate to vibrate at high frequency. Because the bottom of the compaction plate is in contact with the ground, the road repair material and asphalt base are compacted under the action of high-frequency vibration. During the high-frequency vibration, the friction between the entire device and the ground is reduced, allowing the device to move on the ground without the need for the electric wheels, requiring only manual pushing, thus completing the function of compacting the repair material. Through this setup, a single device integrates three functions: road cutting, damaged road breaking, and compaction of repair material. This greatly reduces the time wasted by constantly switching devices during the repair process due to the single function of the equipment. Furthermore, the smaller number of devices also reduces the transportation costs required for transporting the equipment. At the same time, the device uses a single power output source to drive all three functions, which not only reduces the overall size and equipment cost but also makes operation more convenient. Moreover, the road breaking function can be performed simultaneously during the road cutting process, further improving the efficiency of road repair.

[0009] Preferably, a protective shell is fixed to the outside of the engine, and a lifting platform is provided on one side of the protective shell. A vertically arranged hydraulic rod is fixed between the lifting platform and the protective shell. The electric wheels are installed on both sides of the lifting platform. An operating arm is rotatably connected to the outside of the protective shell, and a folding wheel is rotatably connected to the side of the protective shell away from the lifting platform. The protective shell is located outside the engine, and the operating arm can rotate. The operator grasps the operating arm to control the forward direction of the equipment. By shortening the hydraulic rod, the lifting platform rises relative to the protective shell, so that the electric wheels no longer contact the ground. At the same time, the folding wheel is flipped upward, so that only the compaction plate contacts the ground. When the compaction plate vibrates, under the huge weight of the engine and other parts, the equipment still adheres to the ground and can transmit the vibration to the repair material at the bottom, thereby compacting the repair material.

[0010] Preferably, a horizontally arranged drive shaft is fixedly connected to the middle of the cutting disc, with one end of the drive shaft located inside the protective shell. The belt is sleeved on the outside of the drive shaft and the power shaft. A restraining sleeve is rotatably sleeved on the outside of the drive shaft. The drive arm is fixedly connected to the restraining sleeve and the protective shell respectively. When the power shaft rotates, it drives the drive shaft to rotate via the belt, and the drive shaft then drives the cutting disc to rotate. The restraining sleeve is designed to fix the position of the drive shaft. The drive arm can adjust the height of the restraining sleeve, thereby controlling whether the cutting disc contacts the ground for cutting. The movement of the restraining sleeve can synchronously drive the protective shell to move, so that the protective shell is always on the outside of the cutting disc for protection.

[0011] Preferably, the drive arm is rotatably connected to the outer side of the engine. A positioning rod perpendicular to the drive arm is slidably sleeved on the outer side of the drive arm near its top. An arc-shaped operating groove is provided on the outer side of the protective shell. The positioning rod is located in the operating groove. By adjusting the positioning rod on the outer side of the protective shell to make circular movements, the restraint sleeve and the drive shaft can make circular movements inside the protective shell, thereby adjusting the rise and fall of the cutting disc and the protective cover. After the adjustment is completed, the positioning rod can be slid and inserted into the notch of the operating groove to fix the drive arm and thus fix the position of the cutting disc, thereby realizing the function of adjusting the height of the cutting disc and controlling whether the cutting disc cuts the ground.

[0012] Preferably, the surface of the compaction plate has nail holes for the passing of the breaking nails. A sliding sleeve is fitted around the outside of the breaking nail, and the sliding sleeve is fixed to the protective shell by a reinforcing frame. A vertical spring is fixed between the top of the breaking nail and the inside of the sliding sleeve. The adsorption hood can rotate and continuously impact the breaking nail from the top. When breaking the road surface, the engine's power shaft drives the adsorption hood to rotate. The sliding sleeve is vertically fixed in the protective shell. Under the action of the vertical spring, the top of the breaking nail is lifted above the sliding sleeve. During the rotation of the adsorption hood, it continuously impacts the breaking nail at the bottom. Then, the breaking nail rebounds under the action of the vertical spring, causing the bottom of the breaking nail to continuously pass through the nail holes and break the ground. Through this arrangement, the function of the breaking nail continuously breaking the damaged asphalt road surface is achieved.

[0013] Preferably, a magnetic block made of magnetite is fixed to the end of the power shaft, and the adsorption cover is sleeved on the outside of the magnetic block. The magnetic block is made of magnetite, and an electric telescopic rod for driving the adsorption cover to move horizontally is fixed to one end of the adsorption cover. Two symmetrically arranged protrusions are fixed to the surface of the adsorption cover. In order to allow the crushing nail to work only when needed, the electric telescopic rod is designed so that when the crushing nail is not needed, the electric telescopic rod is shortened, allowing the adsorption cover to move away from the outside of the magnetic block. In this way, the crushing nail is always in an upward state, neither passing through the nail hole nor breaking the road surface. When the crushing nail needs to work, the electric telescopic rod is activated to extend, allowing the adsorption cover to move to the outside of the magnetic block. The two are driven by magnetic attraction, the power shaft drives the magnetic block to rotate, and the magnetic block drives the adsorption cover to rotate, thereby continuously impacting the top of the crushing nail, causing the bottom of the crushing nail to continuously break the road surface. The top of the crushing nail is hemispherical, which facilitates the impact of the protrusions around the adsorption cover on the crushing nail.

[0014] Preferably, the drive disc consists of two discs fixedly connected by an eccentric rod. A piston-connecting rod assembly is disposed between the two discs. A fixed sleeve is fixedly connected inside the protective shell. The bottom translational end of the piston-connecting rod assembly is slidably engaged in the fixed sleeve, and the rotating end of the piston-connecting rod assembly is sleeved on the outside of the eccentric rod. An impact post is fixedly connected to the top of the compaction plate, and the impact post is slidably engaged in the fixed sleeve. The power shaft drives the drive disc to rotate, and the drive disc drives the piston-connecting rod assembly to reciprocate, thereby causing the bottom of the piston-connecting rod assembly to continuously hammer the impact post. All parts are directly connected to the protective shell, not to the tamping plate. Therefore, under impact, the tamping plate will move downwards, while the overall protective shell and internal parts will move upwards. Under the influence of gravity, the force generated by the impact will eventually become the force of the tamping plate pressing against the ground. Under high-speed impact, the tamping plate vibrates at high frequency, thus effectively compacting the asphalt repair material. Under high-frequency vibration, the equipment will have a smaller contact area with the ground and will temporarily float. Therefore, the entire equipment can be pushed without electric wheels and its movement can be controlled by pushing the operating arm.

[0015] Preferably, the tamping plate is made of solid metal and is flat. Multiple vertically arranged spring telescopic rods are fixed between the top of the tamping plate and the protective shell and the engine. In order to ensure that the tamping plate can only move up and down, multiple spring telescopic rods are connected between the protective shell and the tamping plate, so that the tamping plate can only move up and down under the impact of the piston connecting rod assembly, while also ensuring the stable reciprocating operation of the piston connecting rod assembly.

[0016] A method for repairing cracks in asphalt pavement, applicable to the aforementioned asphalt pavement crack repair device, wherein the method specifically comprises:

[0017] S1: Mark the road surface that needs to be repaired, frame the damaged area within the markings, place the device on the road surface that needs to be repaired, align the cutting disc with the pre-drawn markings, and then the cutting disc starts to rotate. Use the drive arm to adjust the height of the cutting disc so that it and the protective cover sink together, allowing the cutting disc to cut the asphalt road surface.

[0018] S2: During the cutting process and in subsequent individual stages, the electric telescopic rod can be activated to extend, allowing the adsorption cover to move to the outside of the magnetic block. The two are driven by magnetic attraction, the power shaft drives the magnetic block to rotate, and the magnetic block drives the adsorption cover to rotate, thereby continuously impacting the top of the breaker nail, causing the bottom of the breaker nail to continuously break the road surface.

[0019] S3: After the crushing is completed, the hydraulic rod is shortened, allowing the lifting platform to rise relative to the protective shell, so that the electric wheel no longer contacts the ground. At the same time, the folding wheel is flipped upward, allowing only the compaction plate to contact the ground. The engine drives the power shaft and drive disc to rotate, and the drive disc can drive the bottom compaction plate to vibrate at high frequency. Since the bottom of the compaction plate is in contact with the ground, the road repair material and asphalt base are compacted under the action of high frequency vibration.

[0020] The method for high-frequency vibration of the tamping plate described in step S3 is as follows:

[0021] Q1: The engine drives the drive disc to rotate via the power shaft, and the drive disc drives the piston connecting rod assembly to reciprocate.

[0022] Q2: The bottom of the piston connecting rod assembly is constantly hammered against the impact column. All parts in the protective shell are directly connected to the protective shell, but not to the ramming plate. Under the impact, the ramming plate will be downward, while the entire protective shell and internal parts will be upward.

[0023] Q3: Under the action of gravity, the force generated by the impact will eventually become the force of the tamping plate pressing on the ground. Under high-speed impact, the tamping plate vibrates at high frequency, thereby compacting the asphalt repair material.

[0024] The beneficial effects of this invention are as follows:

[0025] 1. The asphalt pavement crack repair device and method described in this invention, through the arrangement of a compaction plate, a cutting disc, and a breaking nail, integrates three functions—pavement cutting, damaged pavement breaking, and compaction of repair materials—into a single device. This significantly reduces the time wasted due to the need to constantly switch devices during the repair process because of their single function. Furthermore, the smaller number of devices also reduces transportation costs. Simultaneously, the device uses a single power source to drive all three functions, thus reducing the overall size and cost of the equipment while making operation more convenient. Moreover, the device can simultaneously perform pavement breaking during the cutting process, further improving the efficiency of pavement repair.

[0026] 2. The asphalt pavement crack repair device and repair method of the present invention includes a protective shell set outside the engine, an operating arm that can rotate, and an operator holding the operating arm to control the forward direction of the equipment; by shortening the hydraulic rod, the lifting platform is raised relative to the protective shell, so that the electric wheel no longer contacts the ground, and at the same time the folding wheel is flipped upward, so that only the compaction plate contacts the ground. When the compaction plate vibrates, under the huge weight of the engine and other parts, the equipment still adheres to the ground, and can transmit the vibration to the repair material at the bottom, thereby compacting the repair material. Attached Figure Description

[0027] The invention will now be further described with reference to the accompanying drawings.

[0028] Figure 1 This is a perspective view of the present invention;

[0029] Figure 2 This is a perspective view of the protective shell of the present invention;

[0030] Figure 3 This is a perspective view of the engine of the present invention;

[0031] Figure 4 This is a perspective view of the drive arm and engine of the present invention;

[0032] Figure 5 This is a perspective view of the tamping plate of the present invention;

[0033] Figure 6 This is a perspective view of the drive disk of the present invention;

[0034] Figure 7 This is a perspective view of the break-off nail of the present invention;

[0035] Figure 8 This is a flowchart of the method of the present invention;

[0036] In the diagram: 1. Protective shell; 2. Operating arm; 3. Lifting platform; 4. Electric wheel; 5. Protective cover; 6. Cutting disc; 7. Tamping plate; 8. Folding wheel; 9. Operating slot; 10. Engine; 11. Power shaft; 12. Adsorption cover; 13. Reinforcing frame; 14. Spring telescopic rod; 15. Sliding sleeve; 16. Restraint sleeve; 17. Drive shaft; 18. Belt; 19. Drive arm; 20. Positioning rod; 21. Drive disc; 22. Nail hole; 23. Fixing sleeve; 24. Impact column; 25. Electric telescopic rod; 26. Magnetic block; 27. Breaking nail; 28. Vertical spring; 29. ​​Piston connecting rod assembly. Detailed Implementation

[0037] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0038] like Figures 1 to 2As shown in the figure, an asphalt pavement crack repair device according to an embodiment of the present invention includes an engine 10. The output end of the engine 10 is fixedly connected to a horizontally arranged power shaft 11. A cutting disc 6 is arranged on one side of the engine 10. A protective cover 5 is arranged on the outer side of the cutting disc 6. A drive arm 19 for adjusting the height of the cutting disc 6 is arranged on the side of the engine 10 away from the power shaft 11. A belt 18 for transmitting power to the cutting disc 6 is sleeved on the outer side of the power shaft 11. A compaction plate 7 is arranged below the engine 10. A drive disc 21 for driving the compaction plate 7 to vibrate is fixedly connected to the middle of the power shaft 11. A breaking nail 27 for breaking the asphalt pavement is also arranged on one side of the engine 10. An adsorption cover 12 for driving the breaking nail 27 to rise and fall is also connected to the end of the power shaft 11. Two electric wheels 4 that can rise and fall are arranged on the outer side of the engine 10.

[0039] Traditional asphalt repair requires at least the following: a road cutter to cut the damaged asphalt pavement; a breaker or manual pickaxe to break up the asphalt pavement; and a compactor to compact the paved material. Multiple machines must be used in sequence to complete the road repair work.

[0040] By setting up the tamping plate 7, cutting disc 6, and breaking nails 27, the device is placed on the road surface to be repaired, aligning the cutting disc 6 with the pre-drawn markings. The cutting disc 6 then begins to rotate. The height of the cutting disc 6 is adjusted using the drive arm 19, causing it and the protective cover 5 to descend together, allowing the cutting disc 6 to cut the asphalt pavement. The engine 10 drives the power shaft 11 to rotate, which in turn drives the cutting disc 6 via the belt 18. The electric wheel 4 drives the device forward, thus separating the asphalt in the marking area from the pavement asphalt. During this separation process, the rotation of the power shaft 11 also simultaneously drives the adsorption... The cover 12 rotates, bringing it into contact with the breaking nail 27 and causing it to move up and down. This allows the breaking nail 27 to simultaneously break the asphalt pavement in the marking area during the cutting process of the cutting disc 6. It is important to note that the breaking nail 27 must be placed within the marking area, not outside it. After cutting, the height of the cutting disc 6 and the protective cover 5 is adjusted using the drive arm 19, raising both so that the cutting disc 6 is no longer in contact with the road surface. The equipment is then moved within the marking area, allowing the moving breaking nail 27 to continuously break the asphalt pavement. To improve safety... The cutting disc 6 can be removed. After crushing, the electric wheel 4 can be raised so that the bottom compaction plate 7 directly contacts the ground. The engine 10 drives the power shaft 11 and drive disc 21 to rotate. The drive disc 21 can drive the bottom compaction plate 7 to vibrate at high frequency. Because the bottom of the compaction plate 7 is in contact with the ground, the road repair material and asphalt base are compacted under the action of high frequency vibration. During the high frequency vibration, the friction between the entire device and the ground is reduced, so that the device can move on the ground without the drive of the electric wheel 4, only requiring manual pushing, thus completing the function of compacting the repair material. Through this design... This device integrates three functions—road cutting, damaged road surface breaking, and compaction of repair materials—into a single unit. This significantly reduces the time wasted by constantly switching between devices during the repair process due to their limited functionality. Furthermore, the smaller number of units reduces transportation costs. A single power source powers all three functions, further reducing overall size and cost while simplifying operation. Moreover, the ability to simultaneously break up the road surface during cutting further enhances the efficiency of road repair.

[0041] A protective shell 1 is fixed to the outside of the engine 10. A lifting platform 3 is provided on one side of the protective shell 1. A vertically arranged hydraulic rod is fixed between the lifting platform 3 and the protective shell 1. The electric wheels 4 are installed on both sides of the lifting platform 3. An operating arm 2 is rotatably connected to the outside of the protective shell 1. A folding wheel 8 is rotatably connected to the side of the protective shell 1 away from the lifting platform 3.

[0042] During operation, the protective shell 1 is set outside the engine 10, and the operating arm 2 can rotate. The operator grabs the operating arm 2 to control the forward direction of the equipment. By shortening the hydraulic rod, the lifting platform 3 rises relative to the protective shell 1, so that the electric wheel 4 no longer touches the ground. At the same time, the folding wheel 8 is flipped upward, so that only the compaction plate 7 touches the ground. When the compaction plate 7 vibrates, under the huge weight of the engine 10 and other parts, the equipment still adheres to the ground and can transmit the vibration to the repair material at the bottom, thereby compacting the repair material.

[0043] A horizontally arranged drive shaft 17 is fixedly connected to the middle of the cutting disc 6. One end of the drive shaft 17 is located inside the protective shell 1. The belt 18 is sleeved on the outside of the drive shaft 17 and the power shaft 11. A restraining sleeve 16 is rotatably sleeved on the outside of the drive shaft 17. The drive arm 19 is fixedly connected to the restraining sleeve 16 and the protective cover 5 respectively.

[0044] During operation, when the power shaft 11 rotates, it drives the transmission shaft 17 to rotate via the belt 18. The transmission shaft 17 then drives the cutting disc 6 to rotate. The restraint sleeve 16 is designed to fix the position of the transmission shaft 17. The drive arm 19 can adjust the height of the restraint sleeve 16, thereby controlling whether the cutting disc 6 contacts the ground for cutting. The movement of the restraint sleeve 16 can also synchronously drive the protective cover 5 to move, so that the protective cover 5 is always on the outside of the cutting disc 6 for protection.

[0045] The drive arm 19 is rotatably connected to the outside of the engine 10. A positioning rod 20, which is perpendicular to the drive arm 19, is slidably sleeved on the outside of the drive arm 19 near the top. An arc-shaped operating groove 9 is opened on the outside of the protective shell 1, and the positioning rod 20 is located in the operating groove 9.

[0046] During operation, by adjusting the positioning rod 20 on the outside of the protective shell 1 to make circular movements, the restraint sleeve 16 and the drive shaft 17 can be moved in a circular motion inside the protective shell 1. This is used to adjust the rise and fall of the cutting disc 6 and the protective cover 5. After the adjustment is completed, the positioning rod 20 can be slid and inserted into the notch of the operating groove 9 to fix the drive arm 19, thereby fixing the position of the cutting disc 6. This realizes the function of adjusting the height of the cutting disc 6 and controlling whether the cutting disc 6 cuts the ground.

[0047] The surface of the tamping plate 7 is provided with nail holes 22 for passing through the breaking nails 27. A sliding sleeve 15 is sleeved on the outside of the breaking nails 27. The sliding sleeve 15 is fixed to the protective shell 1 by a reinforcing frame 13. A vertical spring 28 is fixed between the top of the breaking nails 27 and the inside of the sliding sleeve 15. The adsorption cover 12 can rotate and continuously impact the breaking nails 27 from the top.

[0048] During operation, when breaking up the road surface, the power shaft 11 of the engine 10 drives the suction cover 12 to rotate. The sliding sleeve 15 is vertically fixed in the protective shell 1. Under the action of the vertical spring 28, the top of the breaking nail 27 is lifted above the sliding sleeve 15. During the rotation of the suction cover 12, it will continuously hit the bottom breaking nail 27. Then, the breaking nail 27 rebounds under the action of the vertical spring 28, so that the bottom of the breaking nail 27 continuously passes through the nail hole 22 and breaks up the ground. Through this setting, the function of the breaking nail 27 continuously breaking up the damaged asphalt road surface is realized.

[0049] A magnetic block 26 made of magnetic stone is fixed to the end of the power shaft 11. The adsorption cover 12 is sleeved on the outside of the magnetic block 26. The magnetic block 26 is made of magnetic stone. An electric telescopic rod 25 for driving the adsorption cover 12 to move horizontally is fixed to one end of the adsorption cover 12. Two symmetrically arranged protrusions are fixed to the surface of the adsorption cover 12.

[0050] During operation, to ensure that the breaking nail 27 only operates when needed, the electric telescopic rod 25 is used. When the breaking nail 27 is not needed, the electric telescopic rod 25 is shortened, allowing the adsorption cover 12 to move away from the outside of the magnetic block 26. This keeps the breaking nail 27 in an upward position, preventing it from passing through the nail hole 22 or breaking the road surface. When the breaking nail 27 needs to operate, the electric telescopic rod 25 is activated to extend, allowing the adsorption cover 12 to move to the outside of the magnetic block 26. The two are driven by magnetic attraction, and the power shaft 11 drives the magnetic block 26 to rotate. The magnetic block 26 drives the adsorption cover 12 to rotate, thereby continuously impacting the top of the breaking nail 27, causing the bottom of the breaking nail 27 to continuously break the road surface. The top of the breaking nail 27 is hemispherical, which facilitates the impact of the protrusions around the adsorption cover 12 on the breaking nail 27.

[0051] The drive disc 21 consists of two discs, which are fixedly connected by an eccentric rod. A piston rod assembly 29 is provided between the two discs. A fixed sleeve 23 is fixedly connected inside the protective shell 1. The bottom translational end of the piston rod assembly 29 is slidably engaged in the fixed sleeve 23. The rotating end of the piston rod assembly 29 is sleeved on the outside of the eccentric rod. An impact column 24 is fixedly connected to the top of the tamping plate 7. The impact column 24 is slidably engaged in the fixed sleeve 23.

[0052] During operation, the power shaft 11 drives the drive disc 21 to rotate, and the drive disc 21 drives the piston connecting rod assembly 29 to reciprocate, so that the bottom of the piston connecting rod assembly 29 continuously hammers the impact column 24. All parts in the protective shell 1 are directly connected to the protective shell 1, not to the compaction plate 7. Therefore, under the impact, the compaction plate 7 will be downward, while the entire protective shell 1 and internal parts will be upward. Under the action of gravity, the force generated by the impact will eventually become the force of the compaction plate 7 pressing the ground. Under high-speed impact, the compaction plate 7 vibrates at high frequency, thereby effectively compacting the asphalt repair material. Under high-frequency vibration, the equipment will have a smaller contact area with the ground and will be in a state of temporary floating. Therefore, the entire equipment can be pushed without the electric wheels 4. The movement of the equipment can be controlled by pushing the operating arm 2.

[0053] The tamping plate 7 is made of solid metal and is flat. Multiple vertically arranged spring telescopic rods 14 are fixed between the top of the tamping plate 7, the protective shell 1, and the engine 10. During operation, in order to ensure that the tamping plate 7 can only move up and down, multiple spring telescopic rods 14 are connected between the protective shell 1 and the tamping plate 7, so that the tamping plate 7 can only move up and down under the impact of the piston connecting rod assembly 29, and at the same time, the stable reciprocating operation of the piston connecting rod assembly 29 is ensured.

[0054] A method for repairing cracks in asphalt pavement, applicable to the aforementioned asphalt pavement crack repair device, wherein the method specifically comprises:

[0055] S1: Mark the road surface that needs to be repaired, frame the damaged area within the markings, place the device on the road surface that needs to be repaired, align the cutting disc 6 with the pre-drawn markings, and then the cutting disc 6 starts to rotate. Use the drive arm 19 to adjust the height of the cutting disc 6 so that it and the protective cover 5 sink together, allowing the cutting disc 6 to cut the asphalt road surface.

[0056] S2: During the cutting process and in subsequent individual stages, the electric telescopic rod 25 can be activated to extend, allowing the adsorption cover 12 to move to the outside of the magnetic block 26. The two are driven by magnetic attraction, and the power shaft 11 drives the magnetic block 26 to rotate. The magnetic block 26 drives the adsorption cover 12 to rotate, thereby continuously impacting the top of the breaking nail 27, causing the bottom of the breaking nail 27 to continuously break the road surface.

[0057] S3: After the crushing is completed, the hydraulic rod is shortened, so that the lifting platform 3 rises relative to the protective shell 1, so that the electric wheel 4 no longer touches the ground. At the same time, the folding wheel 8 is flipped upward, so that only the compaction plate 7 touches the ground. The engine 10 drives the power shaft 11 and the drive disc 21 to rotate. The drive disc 21 can drive the bottom compaction plate 7 to vibrate at high frequency. Since the bottom of the compaction plate 7 is in contact with the ground, the road repair material and the asphalt base are compacted under the action of high frequency vibration.

[0058] Also includes:

[0059] The method for performing high-frequency vibration on the tamping plate 7 in step S3 is as follows:

[0060] Q1: The engine 10 drives the drive disc 21 to rotate via the power shaft 11, and the drive disc 21 drives the piston connecting rod assembly 29 to reciprocate.

[0061] Q2: The bottom of the piston connecting rod assembly 29 continuously hammers the impact column 24. All parts in the protective shell 1 are directly connected to the protective shell 1, but not to the ramming plate 7. Under the impact, the ramming plate 7 will be downward, while the entire protective shell 1 and internal parts will be upward.

[0062] Q3: Under the action of gravity, the force generated by the impact will eventually become the force of the compaction plate 7 pressing on the ground. Under high-speed impact, the compaction plate 7 vibrates at high frequency, thereby compacting the asphalt repair material.

[0063] During operation, the device is placed on the road surface to be repaired using the tamping plate 7, cutting disc 6, and breaking nails 27. The cutting disc 6 is aligned with the pre-drawn markings, and then it begins to rotate. The height of the cutting disc 6 is adjusted using the drive arm 19, causing it and the protective cover 5 to descend together, allowing the cutting disc 6 to cut the asphalt pavement. The engine 10 drives the power shaft 11 to rotate, which in turn drives the cutting disc 6 via a belt 18. The electric wheel 4 propels the device forward, thus separating the asphalt in the marking area from the pavement asphalt. During this separation process, the rotation of the power shaft 11 also synchronously drives the... The suction hood 12 rotates, bringing it into contact with the breaking nail 27 and causing it to move up and down. This allows the breaking nail 27 to simultaneously break the asphalt pavement in the marking area during the cutting process of the cutting disc 6. It is important to note that the breaking nail 27 must be placed within the marking area, not outside it. After cutting, the height of the cutting disc 6 and the protective cover 5 is adjusted using the drive arm 19, raising both so that the cutting disc 6 no longer contacts the road surface. The equipment is then moved within the marking area, allowing the up-and-down moving breaking nail 27 to continuously break the asphalt pavement. To improve... For safety reasons, the cutting disc 6 can be removed. After crushing, the electric wheel 4 can be raised so that the bottom compaction plate 7 directly contacts the ground. The engine 10 drives the power shaft 11 and drive disc 21 to rotate. The drive disc 21 can drive the bottom compaction plate 7 to vibrate at high frequency. Because the bottom of the compaction plate 7 is in contact with the ground, the road repair material and asphalt base are compacted under the action of high frequency vibration. During the high frequency vibration, the friction between the entire device and the ground is reduced, so that the device can move on the ground without the drive of the electric wheel 4, only requiring manual pushing, thus completing the function of compacting the repair material. This device integrates three functions—road cutting, damaged road surface breaking, and compaction of repair materials—into a single unit. This significantly reduces the time wasted by constantly switching between devices during the repair process due to their single functionality. Furthermore, the smaller number of units reduces transportation costs. A single power source powers all three functions, further reducing overall size and cost while simplifying operation. Moreover, the ability to simultaneously break up the road surface during cutting further enhances the efficiency of road repair.

[0064] The protective shell 1 is set outside the engine 10. The operating arm 2 can rotate. The operator grabs the operating arm 2 to control the forward direction of the equipment. By shortening the hydraulic rod, the lifting platform 3 rises relative to the protective shell 1, so that the electric wheel 4 no longer touches the ground. At the same time, the folding wheel 8 is flipped upward, so that only the compaction plate 7 touches the ground. When the compaction plate 7 vibrates, under the huge weight of the engine 10 and other parts, the equipment still adheres to the ground and can transmit the vibration to the repair material at the bottom, thereby compacting the repair material.

[0065] When the power shaft 11 rotates, it drives the transmission shaft 17 to rotate via the belt 18. The transmission shaft 17 then drives the cutting disc 6 to rotate. The restraint sleeve 16 is set to fix the position of the transmission shaft 17. The drive arm 19 can adjust the height of the restraint sleeve 16, thereby controlling whether the cutting disc 6 contacts the ground for cutting. The movement of the restraint sleeve 16 can synchronously drive the protective cover 5 to move, so that the protective cover 5 is always on the outside of the cutting disc 6 for protection.

[0066] By adjusting the positioning rod 20 on the outside of the protective shell 1 to make a circular movement, the restraint sleeve 16 and the drive shaft 17 can make a circular movement inside the protective shell 1, thereby adjusting the rise and fall of the cutting disc 6 and the protective cover 5. After the adjustment is completed, the positioning rod 20 can be slid and inserted into the notch of the operating groove 9 to fix the drive arm 19, thereby fixing the position of the cutting disc 6, thus realizing the function of adjusting the height of the cutting disc 6 and controlling whether the cutting disc 6 cuts the ground.

[0067] When breaking up the road surface, the power shaft 11 of the engine 10 drives the adsorption cover 12 to rotate. The sliding sleeve 15 is vertically fixed in the protective shell 1. Under the action of the vertical spring 28, the top of the breaking nail 27 is lifted to the top of the sliding sleeve 15. During the rotation of the adsorption cover 12, it will continuously hit the bottom breaking nail 27. Then the breaking nail 27 rebounds under the action of the vertical spring 28, so that the bottom of the breaking nail 27 continuously passes through the nail hole 22 and breaks up the ground. Through this setting, the function of the breaking nail 27 continuously breaking up the damaged asphalt road surface is realized.

[0068] To ensure that the breaker nail 27 operates only when needed, the electric telescopic rod 25 is designed so that when the breaker nail 27 is not needed, the electric telescopic rod 25 is shortened, allowing the adsorption cover 12 to move away from the outside of the magnetic block 26. In this way, the breaker nail 27 is always in an upward position, neither passing through the nail hole 22 nor breaking the road surface. When the breaker nail 27 needs to operate, the electric telescopic rod 25 is activated to extend, allowing the adsorption cover 12 to move to the outside of the magnetic block 26. The two are driven by magnetic attraction, and the power shaft 11 drives the magnetic block 26 to rotate. The magnetic block 26 drives the adsorption cover 12 to rotate, thereby continuously impacting the top of the breaker nail 27, causing the bottom of the breaker nail 27 to continuously break the road surface. The top of the breaker nail 27 is hemispherical, which facilitates the impact of the protrusions around the adsorption cover 12 on the breaker nail 27.

[0069] The drive shaft 11 drives the drive disc 21 to rotate, and the drive disc 21 drives the piston connecting rod assembly 29 to reciprocate, so that the bottom of the piston connecting rod assembly 29 continuously hammers the impact column 24. All parts in the protective shell 1 are directly connected to the protective shell 1, not to the compaction plate 7. Therefore, under the impact, the compaction plate 7 will be downward, while the entire protective shell 1 and internal parts will be upward. Under the action of gravity, the force generated by the impact will eventually become the force of the compaction plate 7 pressing the ground. Under high-speed impact, the compaction plate 7 vibrates at high frequency, thereby effectively compacting the asphalt repair material. Under high-frequency vibration, the equipment will have a smaller contact area with the ground and a temporary floating state. Therefore, the entire equipment can be pushed without the electric wheel 4. The movement of the equipment can be controlled by pushing the operating arm 2.

[0070] To ensure that the tamping plate 7 can only move up and down, multiple spring telescopic rods 14 are connected between the protective shell 1 and the tamping plate 7, so that the tamping plate 7 can only move up and down under the impact of the piston connecting rod assembly 29, while also ensuring the stable reciprocating operation of the piston connecting rod assembly 29.

[0071] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An asphalt pavement crack repair device, characterized in that: The device includes an engine (10), the output end of which is fixedly connected to a horizontally arranged power shaft (11). A cutting disc (6) is provided on one side of the engine (10), and a protective cover (5) is provided on the outer side of the cutting disc (6). A drive arm (19) for adjusting the height of the cutting disc (6) is provided on the side of the engine (10) away from the power shaft (11). A belt (18) for transmitting power to the cutting disc (6) is sleeved on the outer side of the power shaft (11). A tamping plate (7) is provided below the engine (10). A drive disc (21) for driving the tamping plate (7) to vibrate is fixedly connected to the middle of the power shaft (11). A breaking nail (27) for breaking asphalt pavement is also provided on one side of the engine (10). An adsorption cover (12) for driving the breaking nail (27) to rise and fall is also connected to the end of the power shaft (11). Two electric wheels (4) that can rise and fall are provided on the outer side of the engine (10). A protective shell (1) is fixed to the outside of the engine (10). A lifting platform (3) is provided on one side of the protective shell (1). A vertically arranged hydraulic rod is fixed between the lifting platform (3) and the protective shell (1). The electric wheel (4) is installed on both sides of the lifting platform (3). An operating arm (2) is rotatably connected to the outside of the protective shell (1). A folding wheel (8) is rotatably connected to the side of the protective shell (1) away from the lifting platform (3). The surface of the tamping plate (7) is provided with nail holes (22) for passing through the breaking nail (27). A sliding sleeve (15) is sleeved on the outside of the breaking nail (27). The sliding sleeve (15) is fixed to the protective shell (1) by a reinforcing frame (13). A vertical spring (28) is fixed between the top of the breaking nail (27) and the inside of the sliding sleeve (15). The adsorption cover (12) can rotate and continuously impact the breaking nail (27) from the top. The end of the power shaft (11) is fixed with a magnetic block (26) made of magnetic stone. The adsorption cover (12) is sleeved on the outside of the magnetic block (26). The magnetic block (26) is made of magnetic stone. One end of the adsorption cover (12) is fixed with an electric telescopic rod (25) for driving the adsorption cover (12) to move horizontally. The surface of the adsorption cover (12) has two symmetrically arranged protrusions. The drive disc (21) consists of two discs, which are fixedly connected by an eccentric rod. A piston rod assembly (29) is provided between the two discs. A fixed sleeve (23) is fixedly connected inside the protective shell (1). The bottom translational end of the piston rod assembly (29) is slidably engaged in the fixed sleeve (23). The rotating end of the piston rod assembly (29) is sleeved on the outside of the eccentric rod. An impact column (24) is fixedly connected to the top of the tamping plate (7). The impact column (24) is slidably engaged in the fixed sleeve (23).

2. The asphalt pavement crack repair device according to claim 1, characterized in that: A horizontally arranged drive shaft (17) is fixedly connected to the middle of the cutting disc (6). One end of the drive shaft (17) is located inside the protective shell (1). The belt (18) is sleeved on the outside of the drive shaft (17) and the power shaft (11). A restraint sleeve (16) is rotatably sleeved on the outside of the drive shaft (17). The drive arm (19) is fixedly connected to the restraint sleeve (16) and the protective cover (5) respectively.

3. The asphalt pavement crack repair device according to claim 2, characterized in that: The drive arm (19) is rotatably connected to the outside of the engine (10). A positioning rod (20) is slidably sleeved on the outside of the drive arm (19) and is perpendicular to the drive arm (19). An arc-shaped operating groove (9) is opened on the outside of the protective shell (1), and the positioning rod (20) is located in the operating groove (9).

4. The asphalt pavement crack repair device according to claim 3, characterized in that: The tamping plate (7) is made of solid metal and is flat. Multiple vertically arranged spring telescopic rods (14) are fixed between the top of the tamping plate (7) and the protective shell (1) and the engine (10).

5. A method for repairing cracks in asphalt pavement, characterized in that: This repair method is applicable to the asphalt pavement crack repair device described in claim 4 above, and the method specifically includes: S1: Mark the road surface that needs to be repaired, frame the damaged area within the markings, place the device on the road surface that needs to be repaired, align the cutting disc (6) with the pre-drawn markings, and then the cutting disc (6) starts to rotate. Use the drive arm (19) to adjust the height of the cutting disc (6) so that it and the protective cover (5) sink together, allowing the cutting disc (6) to cut the asphalt road surface. S2: During the cutting process and in subsequent individual stages, the electric telescopic rod (25) can be activated to extend, allowing the adsorption cover (12) to move to the outside of the magnetic block (26). The two are driven by magnetic attraction, and the power shaft (11) drives the magnetic block (26) to rotate. The magnetic block (26) drives the adsorption cover (12) to rotate, thereby continuously impacting the top of the breaking nail (27), allowing the bottom of the breaking nail (27) to continuously break the road surface. S3: After the crushing is completed, the lifting platform (3) is raised relative to the protective shell (1) by shortening the hydraulic rod, so that the electric wheel (4) no longer touches the ground. At the same time, the folding wheel (8) is flipped upward, so that only the compaction plate (7) touches the ground. The engine (10) drives the power shaft (11) and the drive disc (21) to rotate. The drive disc (21) can drive the compaction plate (7) at the bottom to vibrate at high frequency. Since the bottom of the compaction plate (7) is in contact with the ground, the road repair material and the asphalt foundation are compacted under the action of high frequency vibration.

6. The method for repairing asphalt pavement cracks according to claim 5, characterized in that: The method for high-frequency vibration of the tamping plate (7) described in step S3 is as follows: Q1: The engine (10) drives the drive disc (21) to rotate through the power shaft (11), and the drive disc (21) drives the piston connecting rod assembly (29) to reciprocate. Q2: The bottom of the piston connecting rod assembly (29) continuously hammers the impact column (24). All parts in the protective shell (1) are directly connected to the protective shell (1) and not to the ramming plate (7). Under the impact, the ramming plate (7) will be downward, while the entire protective shell (1) and internal parts will be upward. Q3: Under the action of gravity, the force generated by the impact will eventually become the force of the tamping plate (7) pressing the ground. Under high-speed impact, the tamping plate (7) vibrates at high frequency, thereby compacting the asphalt repair material.

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