A repair device for road cracks

Abstract

The present invention relates to the technical field of highway repair devices, and in particular to a repair device for highway cracks. A repair device for highway cracks comprises an outer cylinder, a first inner cylinder, a second inner cylinder, an absorption mechanism and a pressurizing mechanism. A sponge is fixedly provided at the lower end of the second inner cylinder. The pressurizing mechanism applies pressure to the inside of the first inner cylinder, so that the material can flow more easily into the depth of the crack, and the crack can be filled more fully. The provision of the sponge prevents a large amount of material from overflowing from the contact point between the second inner cylinder and the road surface. After a small part of the material overflows, the material between the second inner cylinder and the outer cylinder is sucked into the first inner cylinder through the first suction port and the second suction port by the absorption mechanism. The present invention provides a repair device for highway cracks to solve the problem that when the existing repair equipment is used to repair the cracks, the cracks are not completely filled, and the repair material leaks onto the road surface, resulting in material waste and increased later cleaning work.

Description

Technical Field

[0001] The invention relates to the technical field of highway repair devices, and in particular to a repair device for highway cracks. Background Art

[0002] After a long period of use, the balance of stress and strain inside the concrete is affected due to various reasons such as materials, construction and climate, resulting in cracks. At this time, repair equipment is needed to repair the cracks. Highway crack repair equipment is a mechanical device used to repair road damage. Through specific technical means and structural design, it can effectively fill defects such as potholes and cracks on the road surface, restore the flatness of the road surface, and extend the service life of the road.

[0003] Common methods for repairing road cracks include grouting: After cleaning the cracks and removing debris and loose gravel, the hot grout material is heated to a certain temperature and poured into the cracks to fill the entire crack. After the hot grout cools and solidifies, a solid road repair layer is formed.

[0004] For example, the Chinese invention patent with announcement number CN113202009B provides a repair and treatment device for road cracks. The heating module is set to heat the storage tank so that the internal asphalt is in a high temperature state to prevent the asphalt from solidifying, so that the operator can operate for a long time. However, when the repair equipment is repairing cracks, the deeper cracks are not filled completely. The cracks may appear flat temporarily, but due to the incomplete filling inside, they may collapse later. In addition, when the existing device is repairing cracks, the repair material may leak, which not only wastes materials, but also affects the subsequent cleaning work after the repair material accumulates on the road surface. Summary of the invention

[0005] The invention provides a repairing device for road cracks, so as to solve the problems that when the existing repairing device repairs the cracks, the cracks are not completely filled, and the repairing materials leak onto the road surface, resulting in waste of materials and aggravation of the subsequent cleaning work.

[0006] The present invention adopts the following technical scheme: A repair device for road cracks includes an outer cylinder, a first inner cylinder, a second inner cylinder, an absorption mechanism and a pressurizing mechanism. The outer cylinder is vertically arranged and moves along the trajectory of the crack. The first inner cylinder, the second inner cylinder and the outer cylinder are concentrically arranged and are sequentially distributed from the inside to the outside. The first inner cylinder is fixedly arranged on the outer cylinder, a feed port is provided at the upper end of the first inner cylinder, and a discharge port is provided at the lower end of the first inner cylinder, and the material enters the first inner cylinder from the feed port. The pressurizing mechanism pressurizes the inside of the first inner cylinder through the feed port.

[0007] The second inner cylinder is rotatably connected to the first inner cylinder. A sponge is fixedly provided at the lower end of the second inner cylinder, and the sponge is used to abut against the road surface. A first suction port is provided on the peripheral wall of the first inner cylinder, and a second suction port is provided on the peripheral wall of the second inner cylinder. The absorption mechanism is used to suck the material between the second inner cylinder and the outer cylinder into the first inner cylinder through the first suction port and the second suction port.

[0008] Further, a first retaining ring is fixedly arranged at the lower end of the first inner cylinder, and the first retaining ring and the first inner cylinder are arranged coaxially. The second inner cylinder includes a sleeve, the sleeve is arranged vertically, a limiting ring groove is arranged on the inner wall of the sleeve, the limiting ring groove and the sleeve are arranged concentrically, and the first retaining ring is rotatably arranged in the limiting ring groove.

[0009] Furthermore, the second inner cylinder further comprises a cam, which is fixedly arranged on the lower side of the sleeve, and the rotation center of the cam is coaxially arranged with the sleeve. A through groove is provided on the cam, and the through groove is connected with the discharge port. The sponge is fixedly arranged on the lower side of the cam. The protrusion of the cam is located at the rear side of the rotation center of the cam along the forward direction of the outer cylinder, and the second suction port is located on the side close to the protrusion of the cam.

[0010] Furthermore, a first one-way valve is provided at the first suction port, and the first one-way valve allows the material between the first inner cylinder and the second inner cylinder to enter the first inner cylinder. A second one-way valve is provided at the second suction port, and the second one-way valve allows the material between the second inner cylinder and the outer cylinder to enter between the first inner cylinder and the second inner cylinder.

[0011] Furthermore, the absorption mechanism includes a pressure ring and at least two hydraulic cylinders, the pressure ring and the first inner cylinder are concentrically arranged, and the pressure ring is slidably arranged between the first inner cylinder and the second inner cylinder. The hydraulic cylinder is arranged vertically, and the two hydraulic cylinders are distributed in sequence along the circumference of the first inner cylinder, the upper end of each hydraulic cylinder is fixedly connected to the outer cylinder, and the lower end of each hydraulic cylinder is fixedly connected to the pressure ring.

[0012] Furthermore, a repair device for road cracks also includes an adjustment mechanism, the adjustment mechanism includes a hard plate, the hard plate is fixedly arranged on a cam, the advancing direction of the cam is a first direction, and the hard plate is arranged along the first direction. The hard plate passes through the sponge body, and the lower side of the hard plate is flush with the lower side of the sponge body.

[0013] Furthermore, the adjustment mechanism also includes two extension plates, an installation groove is opened in the hard plate, the installation groove is arranged along the first direction, and first slide grooves are respectively opened on the two side walls of the hard plate perpendicular to the first direction, the first slide grooves are arranged along the first direction, and the first slide grooves pass through the hard plate and are connected to the installation groove.

[0014] The expansion board can be slidably arranged in the installation groove along the second direction, the second direction and the first direction are both horizontal directions, and the second direction is perpendicular to the first direction, and the two expansion boards are sequentially distributed along the second direction. Each expansion board includes a vertical board and a horizontal board, the vertical board is vertically arranged, the lower end of the vertical board is fixedly connected to one side of the horizontal board, and the other side of the horizontal board can be slidably arranged in the first slide groove along the second direction.

[0015] Furthermore, a repairing device for road cracks also includes a handle, one end of which is rotatably connected to the outer cylinder.

[0016] Furthermore, the regulating mechanism also includes a sensor, a controller, a first air pipe and a first air pump, and the first air pump is fixedly arranged on the handle. An air inlet is provided on the cam, and the air inlet is connected to the mounting groove. One end of the first air pipe is rotatably connected to the cam and is connected to the air inlet, and the other end of the first air pipe is connected to the first air pump. The sensor is arranged on the cam to sense the frequency of the cam swinging. The sensor controls the amount of gas input into the first air pipe by the first air pump through the controller.

[0017] Furthermore, the pressurizing mechanism includes a second air pipe and a second air pump, the second air pump is fixedly arranged on the handle, one end of the second air pipe is connected to the second air pump, and the other end of the second air pipe is connected to the feed port.

[0018] The beneficial effects of the present invention are as follows: the present invention is a repairing device for road cracks. The outer cylinder is first placed at the road crack by means of the sponge body, the absorption mechanism and the pressure mechanism. The material is input into the first inner cylinder through the feed port. The material is discharged from the discharge port and enters the road crack. Since the material is relatively viscous and difficult to flow into the depth of the crack, the pressure mechanism is used to pressurize the first inner cylinder, so that the material can flow into the depth of the crack more easily, and the crack can be filled more fully, thereby preventing the problem of collapse caused by incomplete filling of the crack.

[0019] During the process of filling and pressurizing, the sponge body prevents a large amount of material from overflowing from the contact point between the second inner cylinder and the road surface, thereby affecting the work efficiency. When the sponge body encounters an uneven road surface, the sponge body can fit the uneven road surface. For example, when encountering a bump, the sponge body can wrap the bump, thereby preventing a large amount of material in the first inner cylinder from leaking out.

[0020] Due to the simultaneous pressurization during the filling process, a small portion of the material will still overflow and enter between the outer cylinder and the second inner cylinder. The material between the second inner cylinder and the outer cylinder is sucked into the first inner cylinder through the first suction port and the second suction port by the absorption mechanism, reducing material waste while preventing material from accumulating on the road surface and affecting later cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 A schematic diagram of the structure of a repair device for road cracks provided by an embodiment of the present invention;

[0023] Figure 2 A side view of a repair device for road cracks provided by an embodiment of the present invention;

[0024] Figure 3 for Figure 2 Sectional view at AA in the middle;

[0025] Figure 4 A front view of a repair device for road cracks provided by an embodiment of the present invention;

[0026] Figure 5 for Figure 4 Sectional view at the middle BB;

[0027] Figure 6 for Figure 5 The enlarged view of point D in the middle;

[0028] Figure 7 A schematic structural diagram of a second inner cylinder and a sponge body of a road crack repair device provided by an embodiment of the present invention;

[0029] Figure 8 A schematic diagram of a partial structure of a repair device for road cracks provided by an embodiment of the present invention;

[0030] Fig. 9 for Figure 8 Sectional view at CC;

[0031] Fig.10 for Fig. 9 Enlarged view of point E in the middle.

[0032] In the figure: 100, handle; 201, outer cylinder; 202, hydraulic cylinder; 203, pressure ring; 301, sponge; 302, second inner cylinder; 3021, first baffle ring; 303, first inner cylinder; 304, feed port; 305, hard plate; 3051, expansion plate; 3052, mounting groove; 306, air inlet; 310, first suction port; 311, second suction port; 320, cam; 321, through groove; 340, first air pipe; 350, second air pipe. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Reference Figures 1 to 10 As shown, a repair device for road cracks provided by an embodiment of the present invention comprises an outer cylinder 201, a first inner cylinder 303, a second inner cylinder 302, an absorption mechanism and a pressurizing mechanism. The outer cylinder 201 is arranged vertically, and the outer cylinder 201 moves along the trajectory of the crack. The first inner cylinder 303, the second inner cylinder 302 and the outer cylinder 201 are arranged concentrically, and are distributed in sequence from the inside to the outside. The first inner cylinder 303 is fixedly arranged on the outer cylinder 201, and a feed port 304 is provided at the upper end of the first inner cylinder 303, and a discharge port is provided at the lower end of the first inner cylinder 303, and the material enters the first inner cylinder 303 from the feed port 304. The pressurizing mechanism pressurizes the inside of the first inner cylinder 303 through the feed port 304.

[0035] The second inner cylinder 302 is rotatably connected to the first inner cylinder 303. A sponge 301 is fixedly provided at the lower end of the second inner cylinder 302, and the sponge 301 is used to abut against the road surface. A first suction port 310 is provided on the peripheral wall of the first inner cylinder 303, and a second suction port 311 is provided on the peripheral wall of the second inner cylinder 302. The absorption mechanism is used to suck the material between the second inner cylinder 302 and the outer cylinder 201 into the first inner cylinder 303 through the first suction port 310 and the second suction port 311.

[0036] The outer cylinder 201 is placed at the crack of the road, and the material is input into the first inner cylinder 303 through the feed port 304, and the material is discharged from the discharge port and enters the crack of the road. Since the material is relatively viscous and difficult to flow into the depth of the crack, the pressure mechanism is used to pressurize the first inner cylinder 303, so that the material can flow into the depth of the crack more easily, and the crack can be filled more fully, preventing the problem of collapse caused by incomplete filling of the crack.

[0037] During the process of filling and pressurizing, the sponge 301 prevents a large amount of material from spilling out from the contact point between the second inner cylinder 302 and the road surface, thereby affecting the work efficiency. When the sponge 301 encounters an uneven road surface, the sponge 301 can fit the uneven road surface, for example, when encountering a bump, the sponge 301 can wrap the bump, thereby preventing a large amount of material in the first inner cylinder 303 from leaking out.

[0038] Due to the pressure applied during the filling process, a small portion of the material will still overflow and enter between the outer cylinder 201 and the second inner cylinder 302. The material between the second inner cylinder 302 and the outer cylinder 201 is sucked into the first inner cylinder 303 through the first suction port 310 and the second suction port 311 by the absorption mechanism.

[0039] In this embodiment, a first retaining ring 3021 is fixedly disposed at the lower end of the first inner cylinder 303, and the first retaining ring 3021 is coaxially disposed with the first inner cylinder 303. The second inner cylinder 302 includes a sleeve, which is vertically disposed, and a limiting ring groove is provided on the inner wall of the sleeve, and the limiting ring groove and the sleeve are concentrically disposed, and the first retaining ring 3021 is rotatably disposed in the limiting ring groove.

[0040] In this embodiment, the second inner cylinder 302 further includes a cam 320, which is fixedly arranged on the lower side of the sleeve, and the rotation center of the cam 320 is coaxially arranged with the sleeve. A through groove 321 is provided on the cam 320, and the through groove 321 is connected to the discharge port. The sponge 301 is fixedly arranged on the lower side of the cam 320. The protrusion of the cam 320 is located at the rear side of the rotation center of the cam 320 along the forward direction of the outer cylinder 201, and the second suction port 311 is located on the side close to the protrusion of the cam 320.

[0041] When the cam 320 follows the outer cylinder 201 to move along the crack, since the contact area between the protrusion and the road surface on the lower side of the cam 320 is larger, that is, the friction between the protrusion and the road surface is larger, during the movement of the cam 320, the cam 320 and the second inner cylinder 302 will rotate around the axis of the second inner cylinder 302, and the protrusion of the cam 320 is always on the rear side of the forward direction of the cam 320.

[0042] At the same time, since the material is relatively viscous, the cam 320 and the sponge 301 will push the material when the outer cylinder 201 moves forward, so that the material on the rear side of the cam 320 is more than the material on the front side of the cam 320. And since the second suction port 311 is located on the side close to the protrusion of the cam 320, the leaked material can be sucked back into the first inner cylinder 303.

[0043] In this embodiment, a first one-way valve is provided at the first suction port 310, and the first one-way valve allows the material between the first inner cylinder 303 and the second inner cylinder 302 to enter the first inner cylinder 303. A second one-way valve is provided at the second suction port 311, and the second one-way valve allows the material between the second inner cylinder 302 and the outer cylinder 201 to enter between the first inner cylinder 303 and the second inner cylinder 302.

[0044] In this embodiment, the absorption mechanism includes a pressure ring 203 and at least two hydraulic cylinders 202. The pressure ring 203 and the first inner cylinder 303 are concentrically arranged, and the pressure ring 203 is slidably arranged between the first inner cylinder 303 and the second inner cylinder 302. The hydraulic cylinder 202 is arranged vertically, and the two hydraulic cylinders 202 are sequentially distributed along the circumference of the first inner cylinder 303. The upper end of each hydraulic cylinder 202 is fixedly connected to the outer cylinder 201, and the lower end of each hydraulic cylinder 202 is fixedly connected to the pressure ring 203.

[0045] When the pressure ring 203 moves upward, the material between the outer cylinder 201 and the second inner cylinder 302 is sucked into the space between the first inner cylinder 303 and the second inner cylinder 302 through the second one-way valve. When the pressure ring 203 moves downward, the pressure ring 203 presses the material between the first inner cylinder 303 and the second inner cylinder 302 back into the first inner cylinder 303 through the first one-way valve.

[0046] In this embodiment, a repair device for road cracks further includes an adjustment mechanism, which includes a hard plate 305, which is fixedly arranged on a cam 320, the advancing direction of the cam 320 is a first direction, and the hard plate 305 is arranged along the first direction. The hard plate 305 passes through the sponge 301, and the lower side of the hard plate 305 is flush with the lower side of the sponge 301.

[0047] After the material is filled, if the sponge 301 continues to contact the material in the crack, the material on the upper surface of the crack will be sunken due to the deformation of the sponge 301. Since the hard plate 305 is arranged at the protrusion, that is, at the rear side of the forward direction of the cam 320, after the material is filled, the hard plate 305 contacts the material in the crack, smoothing the material while preventing the material from sunken, so as to improve the filling effect.

[0048] In this embodiment, the adjustment mechanism also includes two extension plates 3051, an installation groove 3052 is opened in the hard plate 305, and the installation groove 3052 is arranged along the first direction. First sliding grooves are respectively opened on the two side walls of the hard plate 305 perpendicular to the first direction, and the first sliding grooves are arranged along the first direction. The first sliding grooves pass through the hard plate 305 and are connected with the installation groove 3052.

[0049] The expansion plate 3051 can be slidably arranged in the installation groove 3052 along the second direction, the second direction and the first direction are both horizontal directions, and the second direction is perpendicular to the first direction, and the two expansion plates 3051 are sequentially distributed along the second direction. Each expansion plate 3051 includes a vertical plate and a horizontal plate, the vertical plate is vertically arranged, the lower end of the vertical plate is fixedly connected to one side of the horizontal plate, and the other side of the horizontal plate can be slidably arranged in the first slide groove along the second direction.

[0050] The width of the hard plate 305 along the second direction is slightly larger than the width of the straight section of the crack. When the crack is bent, the width of the bent portion may be larger than the width of the hard plate 305, that is, the hard plate 305 cannot completely cover the crack at the bent portion of the crack. Therefore, when the crack is more bent, the two horizontal plates extend out of the mounting groove 3052 to increase the contact area between the adjustment mechanism and the crack.

[0051] In this embodiment, a repairing device for road cracks further includes a handle 100 , and one end of the handle 100 is rotatably connected to the outer cylinder 201 .

[0052] In this embodiment, the regulating mechanism further includes a sensor, a controller, a first air pipe 340 and a first air pump, and the first air pump is fixedly arranged on the handle 100. An air inlet 306 is provided on the cam 320, and the air inlet 306 is communicated with the mounting groove 3052. One end of the first air pipe 340 is rotatably connected to the cam 320 and communicated with the air inlet 306, and the other end of the first air pipe 340 is connected to the first air pump. The sensor is arranged on the cam 320 to sense the frequency of the swing of the cam 320. The sensor controls the amount of gas input into the first air pipe 340 by the first air pump through the controller.

[0053] When the sensor senses that the swing frequency of the cam 320 exceeds the preset frequency, the controller controls the first air pump, and the first air pump introduces gas into the installation groove 3052 through the first air pipe 340, so that the two expansion plates 3051 move away from each other and the horizontal plate gradually extends out of the first slide groove.

[0054] In this embodiment, the pressurizing mechanism includes a second air pipe 350 and a second air pump. The second air pump is fixedly disposed on the handle 100 . One end of the second air pipe 350 is connected to the second air pump, and the other end of the second air pipe 350 is connected to the feed port 304 .

[0055] The working process of a repair device for road cracks is as follows: the outer cylinder 201 is placed at the road crack, and the material is input into the first inner cylinder 303 through the feed port 304. The material passes through the through slot 321 and is discharged from the discharge port and enters the road crack. Since the material is relatively viscous and is not easy to flow into the depth of the crack, the second air pump is started at the same time, and the second air pump inputs gas into the first inner cylinder 303 through the second air pipe 350, and pressurizes while filling, so that the material can flow into the depth of the crack more easily, and the crack can be filled more fully, preventing the problem of collapse caused by incomplete filling of the crack.

[0056] During the process of filling and pressurizing, the sponge 301 prevents a large amount of material from spilling out from the contact point between the second inner cylinder 302 and the road surface, thereby affecting the work efficiency. When the sponge 301 encounters an uneven road surface, the sponge 301 can fit the uneven road surface, for example, when encountering a bump, the sponge 301 can wrap the bump, thereby preventing a large amount of material in the first inner cylinder 303 from leaking out.

[0057] Since the pressure is applied during the filling process, a small part of the material will still overflow and enter between the outer cylinder 201 and the second inner cylinder 302. The hydraulic cylinder 202 is started, so that the hydraulic cylinder 202 reciprocates and extends and shortens, and the hydraulic cylinder 202 drives the pressure ring 203 to move up and down reciprocatingly. When the pressure ring 203 moves upward, the material between the outer cylinder 201 and the second inner cylinder 302 is sucked into the first inner cylinder 303 and the second inner cylinder 302 through the second one-way valve. When the pressure ring 203 moves downward, the pressure ring 203 presses the material between the first inner cylinder 303 and the second inner cylinder 302 back into the first inner cylinder 303 through the first one-way valve. The material can be reused, reducing material waste while preventing the material from accumulating on the road surface and affecting the later cleaning.

[0058] Holding the handle 100, the outer cylinder 201 is pushed to move along the crack of the road. During the movement of the outer cylinder 201, the first inner cylinder 303 and the second inner cylinder 302 are driven to move synchronously. Since the contact area between the protrusion and the road surface on the lower side of the cam 320 is large, that is, the friction between the protrusion and the road surface is large, during the movement of the cam 320, the cam 320 and the second inner cylinder 302 will rotate around the axis of the second inner cylinder 302, and the protrusion of the cam 320 is always at the rear side of the forward direction of the cam 320.

[0059] At the same time, since the material is relatively viscous, the cam 320 and the sponge 301 will push the material when the outer cylinder 201 moves forward, so that the material on the rear side of the cam 320 is more than the material on the front side of the cam 320. And since the second suction port 311 is located on the side close to the protrusion of the cam 320, the leaked material can be sucked back into the first inner cylinder 303.

[0060] After the material is filled, if the sponge 301 continues to contact the material in the crack, the material on the upper surface of the crack will be sunken due to the deformation of the sponge 301. Since the hard plate 305 is arranged at the protrusion, that is, at the rear side of the forward direction of the cam 320, after the material is filled, the hard plate 305 contacts the material in the crack, smoothing the material while preventing the material from sunken, so as to improve the filling effect.

[0061] The width of the hard plate 305 along the second direction is slightly larger than the width of the straight section of the crack. When the crack is bent, the width of the bent section may be larger than the width of the hard plate 305, that is, the hard plate 305 cannot completely cover the crack. Therefore, the straightness of the crack is judged by the swing frequency of the cam 320. The more the crack is bent, the greater the swing frequency of the cam 320.

[0062] When the sensor senses that the swing frequency of the cam 320 exceeds the preset frequency, the controller controls the first air pump, and the first air pump introduces gas into the installation groove 3052 through the first air pipe 340, so that the two expansion plates 3051 move away from each other, and the horizontal plate gradually extends out of the first slide groove, thereby increasing the contact area between the adjustment mechanism and the crack, preventing the crack from being dented after being repaired.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A repair device for road cracks, characterized in that: It includes an outer cylinder, a first inner cylinder, a second inner cylinder, an absorption mechanism, a pressurizing mechanism and an adjustment mechanism; the outer cylinder is vertically arranged and moves along the trajectory of the crack; the first inner cylinder, the second inner cylinder and the outer cylinder are concentrically arranged and are sequentially distributed from the inside to the outside; the first inner cylinder is fixedly arranged on the outer cylinder, a feed port is provided at the upper end of the first inner cylinder, a discharge port is provided at the lower end of the first inner cylinder, and the material enters the first inner cylinder from the feed port; the pressurizing mechanism pressurizes the inside of the first inner cylinder through the feed port; The second inner cylinder is rotatably connected to the first inner cylinder; a sponge is fixedly provided at the lower end of the second inner cylinder, and the sponge is used to abut against the road surface; a first suction port is provided on the peripheral wall of the first inner cylinder, and a second suction port is provided on the peripheral wall of the second inner cylinder; the absorption mechanism is used to suck the material between the second inner cylinder and the outer cylinder into the first inner cylinder through the first suction port and the second suction port; A first retaining ring is fixedly arranged at the lower end of the first inner cylinder, and the first retaining ring and the first inner cylinder are arranged coaxially; the second inner cylinder includes a sleeve, the sleeve is arranged vertically, a limiting ring groove is arranged on the inner wall of the sleeve, the limiting ring groove and the sleeve are arranged concentrically, and the first retaining ring is rotatably arranged in the limiting ring groove; The second inner cylinder further comprises a cam, which is fixedly arranged on the lower side of the sleeve, and the rotation center of the cam is coaxially arranged with the sleeve; a through groove is opened on the cam, and the through groove is connected with the discharge port; the sponge is fixedly arranged on the lower side of the cam; the protrusion of the cam is located at the rear side of the rotation center of the cam along the forward direction of the outer cylinder, and the second suction port is located on the side close to the protrusion of the cam; The adjustment mechanism includes a hard plate, which is fixedly arranged on the cam, the advancing direction of the cam is a first direction, and the hard plate is arranged along the first direction; the hard plate passes through the sponge body, and the lower side of the hard plate is flush with the lower side of the sponge body; The adjustment mechanism also includes two extension plates, a mounting groove is provided in the hard plate, the mounting groove is arranged along a first direction, and first slide grooves are respectively provided on two side walls of the hard plate perpendicular to the first direction, the first slide grooves are arranged along the first direction, and the first slide grooves penetrate the hard plate and are connected to the mounting grooves; The expansion plate can be slidably arranged in the installation groove along the second direction, the second direction and the first direction are both horizontal directions, and the second direction is perpendicular to the first direction, and the two expansion plates are distributed in sequence along the second direction; each expansion plate includes a vertical plate and a horizontal plate, the vertical plate is vertically arranged, the lower end of the vertical plate is fixedly connected to one side of the horizontal plate, and the other side of the horizontal plate can be slidably arranged in the first sliding groove along the second direction.

2. A repairing device for road cracks according to claim 1, characterized in that: A first one-way valve is provided at the first suction port, and the first one-way valve allows the material between the first inner cylinder and the second inner cylinder to enter the first inner cylinder; a second one-way valve is provided at the second suction port, and the second one-way valve allows the material between the second inner cylinder and the outer cylinder to enter between the first inner cylinder and the second inner cylinder.

3. A repairing device for road cracks according to claim 1, characterized in that: The absorption mechanism includes a pressure ring and at least two hydraulic cylinders. The pressure ring and the first inner cylinder are concentrically arranged, and the pressure ring is slidably arranged between the first inner cylinder and the second inner cylinder up and down. The hydraulic cylinders are vertically arranged, and the two hydraulic cylinders are distributed in sequence along the circumference of the first inner cylinder. The upper end of each hydraulic cylinder is fixedly connected to the outer cylinder, and the lower end of each hydraulic cylinder is fixedly connected to the pressure ring.

4. A road crack repair device according to claim 1, characterized in that: The utility model also comprises a handle, one end of which is rotatably connected with the outer cylinder.

5. A road crack repairing device according to claim 4, characterized in that: The regulating mechanism also includes a sensor, a controller, a first air pipe and a first air pump, wherein the first air pump is fixedly arranged on the handle; an air inlet is opened on the cam, and the air inlet is connected to the mounting groove; one end of the first air pipe is rotatably connected to the cam and is connected to the air inlet, and the other end of the first air pipe is connected to the first air pump; the sensor is arranged on the cam for sensing the frequency of the cam's swing; the sensor controls the amount of gas input into the first air pipe by the first air pump through the controller.

6. A road crack repairing device according to claim 4, characterized in that: The pressurizing mechanism comprises a second air pipe and a second air pump. The second air pump is fixedly arranged on the handle. One end of the second air pipe is connected to the second air pump, and the other end of the second air pipe is communicated with the feed port.

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