A grouting device for underground loop gapfilling

Abstract

The application provides a grouting equipment for underground loop gap filling, which comprises a cooling assembly, a pressurizing assembly and a heating assembly, the melted asphalt in a crack area is rapidly cooled to form a solidified layer, and pressure is applied to the solidified layer, so that the melted asphalt can fill the whole crack as much as possible and eliminate the gap; and the asphalt in the crack area is secondarily heated after pressurizing, so as to eliminate the residual stress in the asphalt and make the asphalt more closely combined with the crack. Therefore, the grouting equipment for underground loop gap filling provided by the embodiment of the application can improve the quality and durability of the crack filling and repairing structure and reduce the probability of secondary defects.

Description

Technical Field

[0001] This invention relates to the field of road pavement repair technology, and in particular to a grouting device for filling gaps in underground ring roads. Background Technology

[0002] Cracks are often one of the earliest symptoms to appear in the early stages of a road's lifespan. Crack formation is typically caused by a variety of factors, including climate, vehicle load, construction quality, and maintenance. When cracks first appear in the pavement, they are often shallow and have not yet developed into more serious structural defects such as potholes, alligator cracks, or spalling. Therefore, repairing road cracks as early as possible can effectively prevent their further expansion and exacerbation.

[0003] Current technology for filling cracks in asphalt pavements involves applying asphalt to the surface of the crack and allowing it to penetrate downwards under gravity, a simple and convenient process. However, cracks repaired using this method are often not completely filled by the repair material, leaving gaps at the bottom of the crack. This greatly increases the likelihood of secondary structural defects later on, resulting in poor repair outcomes.

[0004] The information disclosed in the background section of this application is intended only to enhance the understanding of the general background of this application and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0005] Therefore, it is necessary to provide a grouting device for filling gaps in underground ring roads, addressing the problem that current road pavement repair methods are prone to secondary structural defects.

[0006] The above objectives are achieved through the following technical solutions:

[0007] A grouting device for filling gaps in underground ring roads, comprising:

[0008] A cooling assembly for cooling uncured asphalt in a target area and forming a cured layer of a predetermined thickness;

[0009] A pressurizing component, the pressurizing component being used to apply a preset amount of pressure to the cured layer within a preset time;

[0010] A heating assembly for heating the pressurized target area;

[0011] The cooling component, the pressurizing component, and the heating component act sequentially on the target area.

[0012] In one of the embodiments, the pressurizing assembly comprises a pressurizing shell, a pressurizing flexible body and a charge-discharge unit, a part of surface of the pressurizing flexible body is fixedly connected with the pressurizing shell, the pressurizing flexible body stores a pressure medium, and the charge-discharge unit is used to change the volume of the pressure medium in the pressurizing flexible body.

[0013] In one of the embodiments, the pressurizing shell comprises a spinner and a hub, the hub is arranged inside the spinner, and the pressurizing flexible body comprises a wheel-shaped air bag, the wheel-shaped air bag is sleeved on the hub.

[0014] In one of the embodiments, a plurality of air-permeable holes are uniformly distributed on the peripheral wall surface of the wheel-shaped air bag, the spinner and the hub form a first area and a second area which are isolated from each other, the air-permeable holes are communicated with the first area or the second area, the first area is isolated from the external environment, and the second area is adjacent to the target area.

[0015] In one of the embodiments, a movable sealing member is arranged in the spinner, the movable sealing member is used to isolate the first area and the second area, the movable sealing member is movably arranged in the spinner, and the movable sealing member is moved to adjust the number of the air-permeable holes communicated with the first area and the number of the air-permeable holes communicated with the second area.

[0016] In one of the embodiments, the hub comprises a hub shaft and spokes, an air inlet channel is formed in the hub shaft and the spokes, and the air inlet channel is used to communicate the charge-discharge unit and the wheel-shaped air bag.

[0017] In one of the embodiments, the charge-discharge unit comprises at least one fan, and the pressurizing flexible body stores a gaseous pressure medium.

[0018] In one of the embodiments, the heating assembly comprises a storage tank and a spray gun, the spray gun is communicated with the storage tank, the storage tank stores a combustible, and the spray gun is used to spray and ignite the combustible to the target area.

[0019] In one of the embodiments, a mobile platform is further included, the cooling assembly, the pressurizing assembly and the heating assembly are arranged on the mobile platform, and the mobile platform moves to drive the cooling assembly, the pressurizing assembly and the heating assembly to move.

[0020] In one of the embodiments, the cooling assembly, the pressurizing assembly and the heating assembly are sequentially arranged on the mobile platform.

[0021] The present application has the following beneficial effects:

[0022] The grouting equipment for filling cracks in underground ring roads provided in this invention rapidly cools the molten asphalt in the crack area to form a solidified layer, and applies pressure to the solidified layer, thereby enabling the molten asphalt to fill the entire crack as much as possible and eliminate voids. Furthermore, after pressurization, the asphalt in the crack area is reheated to eliminate residual stress, resulting in a tighter bond between the asphalt and the crack. Therefore, the grouting equipment for filling cracks in underground ring roads provided in this invention can improve the quality and durability of crack filling and repair structures and reduce the probability of secondary defects. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a grouting device for filling gaps in underground loops, provided in an embodiment of the present invention.

[0024] Figure 2 This is a schematic diagram of the pressurization component in a grouting device for filling gaps in underground loops, provided in an embodiment of the present invention.

[0025] Figure 3 This is a schematic diagram of the structure of the rectifier in a grouting device for filling gaps in an underground loop provided in an embodiment of the present invention;

[0026] Figure 4 for Figure 3 A cross-sectional view of the fairing in a grouting device used for filling gaps in underground loops;

[0027] Figure 5 This is a schematic diagram of the structure of the fairing in a grouting device for filling gaps in an underground loop provided in an embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the hub structure in a grouting device for filling gaps in underground loops, provided in an embodiment of the present invention.

[0029] Figure 7 This is a schematic diagram of the structure of a wheel-shaped airbag in a grouting device for filling gaps in underground loops, provided in an embodiment of the present invention.

[0030] in:

[0031] 100 Cooling assembly; 200 Pressurization assembly; 210 Fairing; 211 First zone; 212 Second zone; 213 Movable seal; 220 Hub; 230 Wheel airbag; 231 Vent; 240 Cooling fan; 300 Heating assembly; 400 Moving platform. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0033] The serial numbers assigned to components in this document, such as "first," "second," etc., are merely used to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] like Figures 1-7 As shown, this embodiment of the invention provides a grouting device for filling gaps in underground ring roads. It is suitable for repairing defects in paved surfaces, such as cracks in asphalt pavements. It can also be used for repairing defects in other pavement materials, or for paving operations during road construction. It should be noted that before using the grouting device for filling gaps in underground ring roads, the paved surface needs to be laid using asphalt paving equipment, and the repair work should be carried out within a short period after paving.

[0036] Specifically, the grouting equipment for underground loop gap filling provided by the embodiment of the present application comprises a cooling assembly 100, a pressurizing assembly 200 and a heating assembly 300. The cooling assembly 100 is used to cool the un-solidified asphalt in the target area and form a solidified layer with a preset thickness, so that the asphalt in the target area comprises the solidified layer on the upper layer and the flow layer on the lower layer; the pressurizing assembly 200 is used to apply a pressure with a preset size to the solidified layer for a preset time, the pressure is transmitted to the flow layer through the solidified layer, so that the flow layer flows sufficiently and is closely combined with the original structure; the heating assembly 300 is used to perform secondary heating in the target area after the cooling assembly 100 and the pressurizing assembly 200 work, so as to eliminate the additional residual stress generated by the cooling assembly 100 and the pressurizing assembly 200.

[0037] Taking the crack repair of the asphalt pavement as an example, the working process of the grouting equipment for underground loop gap filling in the embodiment is as follows:

[0038] Confirm the target area, the target area should completely cover the crack, and the asphalt paving equipment is used to pave the asphalt in the target area. When the asphalt has not solidified, the cooling assembly 100 is moved to the target area to cool the un-solidified asphalt and form a solidified layer with a preset thickness, the thickness of the solidified layer can meet the requirement of maintaining the structural integrity when the subsequent pressure assembly applies pressure. The main functions of the solidified layer include: 1. It can form a relatively stable structure to transmit the pressure to the flow layer below; 2. It can prevent the flow layer from overflowing upward during the pressure transmission; 3. It can prevent the asphalt from adhering to the surface of the pressurizing assembly 200 when the pressure is transmitted; 4. The solidified layer itself has a certain strength, which can avoid the generation of large cracks and depressions.

[0039] After the solidified layer is formed, the pressurizing assembly 200 is moved above the solidified layer to apply a pressure with a preset size to the solidified layer and maintain for a preset time, the solidified layer can transmit the pressure applied by the pressurizing assembly 200 to the flow layer below, the flow layer flows faster after being subjected to the pressure, which can fill the crack as much as possible and eliminate the gap; the preset pressure and the preset time of the pressurizing assembly 200 are determined according to the size and depth of the crack and other factors, the larger the size and the deeper the depth of the crack, the greater the preset pressure and the longer the preset time.

[0040] After the pressurization by the pressurization assembly 200, the target region is heated by the heating assembly 300. Compared with natural cooling, the cooling speed of the cooling assembly 100 is faster when cooling the un-solidified asphalt of the target region, which can cause residual stress in the filler, and the too fast cooling can also make the filler unable to form a complete solidification structure with the crack, which can cause the quality of the filler material to decrease, the strength and durability to decrease, and the risk of the crack reappearing to increase. Therefore, the heating assembly 300 is used to melt the asphalt of the target region again, to eliminate the residual stress in the asphalt, and to make the asphalt combine with the crack again to form a tight solidification structure.

[0041] The grouting device for underground loop crack filling provided by the embodiment of the present application can form a solidification layer by rapidly cooling the melted asphalt of the crack region, and can apply pressure to the solidification layer, so that the melted asphalt can fill the entire crack as much as possible and eliminate the void. In addition, the asphalt of the crack region is heated again after the pressurization, to eliminate the residual stress in the asphalt and make the asphalt combine with the crack more tightly. Therefore, the grouting device for underground loop crack filling provided by the embodiment of the present application can improve the quality and durability of the crack filling and repairing structure, and reduce the probability of secondary defects.

[0042] In one of the embodiments, the pressurization assembly 200 includes a pressurization shell, a pressurization flexible body, and a pumping unit. The pressurization shell is used to provide a mounting base for the pressurization flexible body, so that the pressurization flexible body can maintain a correct positional relationship with the target region. The pressurization flexible body stores a pressure medium. The pumping unit can change the volume of the pressure medium in the pressurization flexible body (for compressible medium, the pumping unit can be regarded as changing the mass and volume of the pressure medium in the pressurization flexible body), so as to change the contact pressure / pressure between the pressurization flexible body and the target region. The pressurization flexible body is partially fixedly connected to the pressurization shell, and the other part of the pressurization flexible body abuts against the target region. When the pumping unit inputs the pressure medium into the pressurization flexible body, the contact pressure / pressure between the pressurization flexible body and the target region increases.

[0043] In one of the embodiments, the pressurization shell includes a fairing 210 and a hub 220. The hub 220 is arranged inside the fairing 210. The fairing 210 is provided with a rotatable mandrel. The hub 220 is sleeved on the mandrel. The pressurization flexible body includes a wheel-shaped air bag 230. The wheel-shaped air bag 230 is sleeved on the hub 220. Therefore, when the pressurization assembly 200 moves, the wheel-shaped air bag 230 can always abut against the ground and continuously apply pressure to the target region. It can be understood that when the pressurization flexible body includes the wheel-shaped air bag 230, the pumping unit at least includes an air pump.

[0044] In one of the embodiments, the outer peripheral wall of the wheel-shaped air bag 230 is provided with a plurality of air holes 231; on the one hand, when the discharge unit always inputs the rated flow of gaseous medium into the wheel-shaped air bag 230, the air holes 231 can make the wheel-shaped air bag 230 maintain a relatively stable pressure, and can avoid the damage of the wheel-shaped air bag 230 caused by the excessive instantaneous pressure; on the other hand, the gas discharged from the air holes 231 can play a certain pressure transmission role when impacting the solidification layer. Specifically, the fairing 210 has a circular segment and a guide segment, the hub 220 and the wheel-shaped air bag 230 are arranged in the circular segment, and a cavity is formed between the fairing 210 and the wheel-shaped air bag 230. The cavity can be divided into a first region 211 and a second region 212 according to the region. The first region 211 is close to the circular segment, and the first region 211 is only communicated with the wheel-shaped air bag 230 through the air holes 231, and is isolated from the second region 212 and the external environment; the second region 212 is close to the guide segment, and the second region 212 is adjacent to the target region, and the gas can flow from the wheel-shaped air bag 230 to the second region 212, and then from the second region 212 to the target region, and finally discharged from the adjacent place of the second region 212 and the target region. In addition, for the grouting equipment for underground loop crack filling including the second region 212, the gaseous pressure medium flowing to the target region can play a cooling role, at this time, the cooling assembly 100 and the pressurizing assembly 200 can be considered as sharing parts.

[0045] In one of the embodiments, the fairing 210 is further provided with a movable sealing member 213, which is used to isolate the first region 211 and the second region 212. The movable sealing member 213 is movably arranged in the fairing 210, and the movable sealing member 213 moves to adjust the number of air holes 231 communicated with the first region 211 and the number of air holes 231 communicated with the second region 212. For example, Figure 4 When the movable sealing member 213 of the intermediate embodiment includes two rollers, one of which is located at the lower left side and is not movable, and the other of which is located at the upper right side and can rotate around the core shaft; the two side surfaces and one side of the circumferential surface of the roller always abut against the fairing 210, and the other side of the circumferential surface abuts against the wheel-shaped air bag 230, thereby realizing sealing.

[0046] In one of the embodiments, a plurality of spokes are arranged on the hub 220, and an air inlet channel is formed in the core shaft and the spokes. The air inlet channel is used to communicate the discharge unit and the wheel-shaped air bag 230. The discharge unit inputs the gaseous pressure medium into the air inlet channel, and the pressure medium flows through the air inlet channel to the wheel-shaped air bag 230. Arranging the air inlet channel in the core shaft and the spokes can reduce the structural complexity, and since the spokes are uniformly connected to the hub 220, the uniformity of the gaseous pressure medium entering is good.

[0047] In one of the embodiments, the discharging unit is directly connected to the wheel-shaped air bag 230 through a flexible air pipe, so that the air inlet channel does not need to be opened on the original rigid structure, and the overall strength of the device can be improved.

[0048] In one of the embodiments, the pressurizing assembly 200 includes a pressurizing shell and a pressurizing cylinder, the pressurizing shell is used to provide a mounting base for the pressurizing cylinder, so that the pressurizing cylinder can maintain a correct positional relationship with the target area, and the active end of the pressurizing cylinder points to the target area. The active end of the pressurizing cylinder acts and exerts pressure on the solidified layer, and the contact pressure / pressure between the pressurizing cylinder and the solidified layer is changed by adjusting the output power and stroke of the pressurizing cylinder. The pressurizing cylinder can be a pneumatic cylinder, a hydraulic cylinder or an electric cylinder.

[0049] In one of the embodiments, the cooling assembly 100 includes a cooling fan 240, which can blow cold air to the target area.

[0050] In one of the embodiments, the discharging unit includes at least one fan, and the pressurizing flexible body stores gaseous pressure medium.

[0051] In one of the embodiments, the heating assembly 300 includes a storage tank and a spray gun, the spray gun is connected to the storage tank, the storage tank stores combustible material, and the spray gun is used to spray and ignite the combustible material to the target area. In other embodiments, the heating unit can also be other forms of heat sources, such as radiant heat sources, contact heat sources, etc.

[0052] In one of the embodiments, the grouting device for underground loop gap filling also includes a mobile platform 400, the cooling assembly 100, the pressurizing assembly 200 and the heating assembly 300 are arranged on the mobile platform 400, and the mobile platform 400 moves to drive the cooling assembly 100, the pressurizing assembly 200 and the heating assembly 300 to move.

[0053] In one of the embodiments, the cooling assembly 100, the pressurizing assembly 200 and the heating assembly 300 are sequentially arranged on the mobile platform 400. As shown in Figure 1 , the cooling assembly 100, the pressurizing assembly 200 and the heating assembly 300 are arranged along the direction from the lower left to the upper right in the figure.

[0054] The technical features of the above embodiments can be combined in any way. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present disclosure.

[0055] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A grouting device for filling gaps in underground ring roads, characterized in that, include: A cooling assembly for cooling uncured asphalt in a target area and forming a cured layer of a predetermined thickness; A pressurizing component, the pressurizing component being used to apply a preset amount of pressure to the cured layer within a preset time; A heating assembly for heating the pressurized target area; The cooling component, the pressurizing component, and the heating component act sequentially on the target area; The pressurization assembly includes a pressurization shell, a pressurization flexible body, and a flushing unit. A portion of the surface of the pressurization flexible body is fixedly connected to the pressurization shell. The pressurization flexible body stores a pressure medium. The flushing unit is used to change the volume of the pressure medium inside the pressurization flexible body. The pressurized housing includes a fairing and a hub, the hub being disposed inside the fairing, and the pressurized flexible body includes a wheel-shaped airbag, the wheel-shaped airbag being fitted onto the hub; The outer peripheral wall of the wheel-shaped airbag is evenly distributed with multiple ventilation holes. The fairing and the hub form a first region and a second region that are isolated from each other. The ventilation holes are connected to the first region or the second region. The first region is isolated from the external environment, and the second region is adjacent to the target region. The fairing is provided with a movable seal, which is used to isolate the first region and the second region; the movable seal is movably disposed in the fairing, and the movable seal can be moved to adjust the number of vents communicating with the first region and the number of vents communicating with the second region.

2. The grouting equipment for filling gaps in underground loops according to claim 1, characterized in that, The hub includes a spindle and spokes, and an air intake channel is formed inside the spindle and the spokes. The air intake channel is used to connect the venting unit and the wheel-shaped airbag.

3. The grouting equipment for filling gaps in underground ring roads according to claim 1, characterized in that, The flushing unit includes at least one fan, and the pressurized flexible body stores a gaseous pressure medium.

4. The grouting equipment for filling gaps in underground ring roads according to claim 1, characterized in that, The heating assembly includes a storage tank and a spray gun. The spray gun is connected to the storage tank, which stores combustible material. The spray gun is used to spray the combustible material onto the target area and ignite it.

5. The grouting equipment for filling gaps in underground ring roads according to claim 1, characterized in that, It also includes a mobile platform, on which the cooling component, the pressurizing component and the heating component are all disposed. When the mobile platform moves, it drives the cooling component, the pressurizing component and the heating component to move.

6. The grouting equipment for filling gaps in underground ring roads according to claim 5, characterized in that, The cooling component, the pressurizing component, and the heating component are sequentially arranged on the mobile platform.

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