Pressure self-adaptive pavement reinforcing grouting equipment

Abstract

The utility model relates to the technical field of road engineering and grouting, in particular to pressure self-adaptive pavement reinforcing grouting equipment which comprises a vehicle body, a grouting main body, a conveying pipe and a grouting head. A pressure sensor is arranged on the grouting head and electrically connected with the controller, and the controller is electrically connected with the flow control valve. A telescopic nozzle assembly is arranged in the grouting head and comprises a first nozzle and a second nozzle which are connected in a sliding mode, and a sealing ring and an elastic piece are arranged on the second nozzle. According to the equipment, the grouting pressure and flow are automatically adjusted by detecting the pressure change in a foundation gap in real time, the grouting efficiency and the repairing quality are improved, and resource waste is reduced.

Description

Technical Field

[0001] This utility model relates to the field of road engineering and grouting technology, and more specifically, to a pressure-adaptive pavement reinforcement grouting device. Background Technology

[0002] In the field of road construction and maintenance, pavement reinforcement technology is an important means to improve the load-bearing capacity and extend the service life of roads. Traditional pavement reinforcement methods usually rely on large-scale excavation and replacement of subgrade materials. This method is not only time-consuming and costly, but also significantly impacts traffic flow. In recent years, grouting technology has gradually gained attention as an efficient and economical pavement reinforcement method. By injecting grout with adjustable proportions into the subgrade, it can effectively fill foundation voids and solidify loose structures, thereby significantly enhancing the density and compressive strength of the subgrade and improving the pavement's load-bearing capacity. In addition, grouting technology can precisely control grouting pressure and flow rate, specifically filling cracks, potholes, and underground cavities. It has high repair efficiency and does not require large-scale excavation, typically restoring road traffic within 24 hours, greatly reducing traffic disruption.

[0003] However, existing grouting equipment still has some shortcomings in practical applications. First, traditional grouting equipment struggles to automatically adjust grouting pressure and flow rate according to the actual conditions of the roadbed, resulting in less than ideal grouting effects and potential issues of insufficient or excessive grouting. Second, existing equipment has poor adaptability to complex geological conditions and cannot respond to changes in the foundation in real time, affecting the accuracy and efficiency of construction. Furthermore, some equipment is complex to operate, requiring highly skilled personnel, further increasing construction difficulty and costs. Utility Model Content

[0004] This utility model discloses a pressure-adaptive road surface reinforcement grouting device. The pressure adjustment mechanism can automatically adjust the grouting pressure and flow rate according to the size and depth of the foundation voids, thereby improving grouting efficiency and repair quality, and reducing resource waste.

[0005] The present invention adopts the following solution:

[0006] This application provides a pressure-adaptive road surface reinforcement grouting device, including a vehicle body, a grouting body mounted on the vehicle body, a delivery pipe connected to the grouting body, and a grouting head mounted on the delivery pipe; it also includes a pressure regulating mechanism, which includes a pressure sensor mounted on the grouting head, the pressure sensor being electrically connected to a controller, and the controller being electrically connected to a flow control valve mounted on the delivery pipe; a retractable nozzle assembly is disposed within the grouting head; the nozzle assembly is adapted to connect to a conduit to output grout to a designated location, and the pressure sensor is disposed within the nozzle assembly to detect the pressure within the nozzle assembly.

[0007] By adopting the above technical solution, when the grouting head is aligned with the location requiring reinforcement, the pressure sensor detects the pressure changes in the foundation voids in real time and transmits the data to the controller. The controller adjusts the opening of the flow control valve according to the preset program, thereby changing the grouting pressure and flow rate. At the same time, the nozzle assembly inside the grouting head can automatically extend and retract according to pressure changes to adapt to foundation voids of different depths and widths. The pressure adjustment mechanism can significantly improve the accuracy and efficiency of grouting and reduce resource waste.

[0008] The present invention is further configured such that: the nozzle assembly includes a first nozzle slidably connected within the grouting head, the first nozzle having a first annular groove, a second nozzle slidably connected within the first annular groove, and a sealing ring being provided at the end of the second nozzle away from the first nozzle; and an elastic element connected to the second nozzle is provided on the first nozzle.

[0009] The present invention is further configured such that the elastic element includes a spring disposed outside the second nozzle, and a limiting block is disposed at the end of the spring away from the first nozzle, the limiting block being connected to the second nozzle.

[0010] The present invention is further configured such that: the number of grouting heads is three, and a linkage mechanism is provided between two adjacent grouting heads.

[0011] In summary, the beneficial technical effects of this utility model are as follows:

[0012] 1. The pressure regulating mechanism can automatically adjust the grouting pressure and flow rate according to the size and depth of the foundation voids, thereby improving grouting efficiency and repair quality, and reducing resource waste;

[0013] 3. The linkage mechanism can improve the stability of the grouting head, and the linkage mechanism has a simple structure and is easy to operate. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of a pressure-adaptive road surface reinforcement grouting device according to an embodiment of the present invention;

[0015] Figure 2 This is a side view of a pressure-adaptive road surface reinforcement grouting device according to an embodiment of the present invention.

[0016] Figure 3 for Figure 1 A magnified view of part A in the image;

[0017] Figure 4 This is a schematic diagram of the linkage mechanism of a pressure-adaptive road surface reinforcement grouting device according to an embodiment of the present invention. Detailed Implementation

[0018] This embodiment provides a pressure-adaptive pavement reinforcement grouting device, the structure of which is as follows: Figures 1 to 4 As shown. The device includes a vehicle body 1, a grouting body 2 mounted on the vehicle body 1, a delivery pipe 3 connected to the grouting body 2, and a grouting head 4 installed at the end of the delivery pipe 3. There are three grouting heads 4, and adjacent grouting heads 4 are connected by a linkage mechanism 5 to improve the stability of the grouting head 4 when it is deployed. A retractable nozzle assembly 6 is provided inside the grouting head 4, and a pressure regulating mechanism 7 is also installed on the grouting head 4 to automatically adjust the grouting pressure and flow rate according to the size and depth of the foundation voids; the nozzle assembly (6) is adapted to connect to a conduit to output the grout to a designated location, and the pressure sensor (71) is provided inside the nozzle assembly (6) to detect the pressure inside the nozzle assembly (6).

[0019] During operation, a detachable conduit (not shown) is connected to the outlet of nozzle assembly 6, and then the conduit is inserted into the road surface to be grouted. A metal insert can be provided at the end of the conduit for easy insertion into the road surface. The three grouting heads can work simultaneously to improve work efficiency and can grout multiple locations on the road surface at the same time, improving the uniformity of grouting.

[0020] like Figure 1 As shown, the vehicle body 1 serves as the supporting platform for the entire equipment, on which the grouting body 2 is fixedly installed. The grouting body 2 contains a grout storage tank and a pumping device for storing and transporting grouting materials. One end of the delivery pipe 3 is connected to the outlet of the grouting body 2, and the other end extends to the grouting head 4. A flow control valve 8 is installed on the delivery pipe 3, which is electrically connected to a controller 9 and used to adjust the grouting flow rate according to the instructions of the controller 9. The grouting head 4 is the core component of the grouting operation, and its internal structure is as follows... Figure 2 As shown, the assembly includes a nozzle assembly 6. The nozzle assembly 6 consists of a first nozzle 61 and a second nozzle 62. The first nozzle 61 is slidably connected within the grouting head 4 and has a first annular groove 611 formed thereon. The second nozzle 62 is slidably connected within the first annular groove 611, and a sealing ring 621 is provided at its end away from the first nozzle 61 to prevent leakage of grouting material. The first nozzle 61 and the second nozzle 62 are connected by an elastic element 63, which includes a spring 631 and a limiting block 632. One end of the spring 631 is fixed to the bottom wall of the first annular groove 611 of the first nozzle 61, and the other end is connected to the second nozzle 62 via the limiting block 632, thereby fixing the position of the second nozzle 62. It should be noted that a retaining ring is provided at the end of the second nozzle 62 located inside the first nozzle 61 to prevent the second nozzle 62 from completely detaching from the first nozzle 61.

[0021] When the grouting pressure increases, the nozzle assembly is subjected to a momentary impact force. The second nozzle 62 slides inward toward the first nozzle 61, and the spring 631 is compressed to reduce the momentary impact force on the nozzle assembly 6. When the grouting pressure decreases, the spring 631 returns to its elastic deformation, pushing the second nozzle 62 outward. This design allows the nozzle assembly 6 to adapt to the momentary impact force generated by changes in grouting pressure.

[0022] like Figure 3 As shown, there are three grouting heads 4, and adjacent grouting heads 4 are connected by a linkage mechanism 5. The linkage mechanism 5 includes a first connecting rod 51 and a second connecting rod 52 hinged to the grouting head 4. The three grouting heads 4 are all connected by the linkage mechanism 5, which can improve the stability of the grouting head 4 during deployment.

[0023] The pressure regulating mechanism 7 is the core component of this invention, and its working principle is as follows: A pressure sensor 71 is installed on the grouting head 4, and the pressure sensor 71 is electrically connected to the controller 9. When the grouting head 4 is aligned with the location requiring reinforcement, the pressure sensor 71 detects the pressure changes within the foundation voids in real time and transmits the data to the controller 9. The controller 9 adjusts the opening of the flow control valve 8 according to the pressure changes, thereby changing the grouting pressure and flow rate. For example, in actual construction, when the foundation voids are deep and large, the pressure value detected by the pressure sensor 71 is low, and the controller 9 will increase the opening of the flow control valve 8 to increase the grouting pressure and flow rate; when the foundation voids are shallow and small, the pressure value detected by the pressure sensor 71 is high, and the controller 9 will decrease the opening of the flow control valve 8 to reduce the grouting pressure and flow rate. This adaptive pressure regulation mechanism significantly improves the accuracy and efficiency of grouting and reduces resource waste.

[0024] In practical applications, the pressure-adaptive pavement reinforcement grouting equipment of this invention can be widely used in the maintenance and repair of infrastructure such as roads, bridges, and tunnels. For example, in the pavement reinforcement construction of a highway, the construction workers first drive the vehicle 1 to the section to be repaired, unfold the grouting head 4 and fix it through the linkage mechanism 5, install a guide pipe at the outlet of the nozzle assembly 6, and insert the guide pipe into the pavement to be repaired. Then, the pumping device of the grouting body 2 is started, and the grouting material is transported to the grouting head 4 through the delivery pipe 3. The pressure sensor 71 on the grouting head 4 monitors the pressure changes in the foundation voids in real time and transmits the data to the controller 9. The controller 9 adjusts the opening of the flow control valve 8 according to the preset program, thereby changing the grouting pressure and flow rate to ensure that the grouting material is evenly distributed throughout the foundation voids. Finally, after the grouting is completed, the construction workers retract the grouting head 4 and shut down the equipment, completing the pavement reinforcement operation.

[0025] It should be understood that the above are only preferred embodiments of the present utility model, and the protection scope of the present utility model is not limited to the above embodiments. All technical solutions that fall within the scope of the present utility model are protected by the present utility model.

[0026] The accompanying drawings used in the above description of the embodiments only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

Claims

1. A pressure-adaptive road surface reinforcement grouting device, comprising a vehicle body (1), characterized in that, The vehicle body (1) is provided with a grouting body (2), and a delivery pipe (3) is connected to the grouting body (2). A grouting head (4) is provided on the delivery pipe (3). The vehicle body (1) also includes a pressure regulating mechanism (7), which includes a pressure sensor (71) installed on the grouting head (4). The pressure sensor (71) is electrically connected to a controller (9), and the controller (9) is electrically connected to a flow control valve (8) installed on the delivery pipe (3). A retractable nozzle assembly (6) is provided inside the grouting head (4). The nozzle assembly (6) is adapted to connect to a conduit to output grout to a designated location. The pressure sensor (71) is installed inside the nozzle assembly (6) to detect the pressure inside the nozzle assembly (6).

2. The pressure-adaptive road surface reinforcement grouting equipment according to claim 1, characterized in that, The nozzle assembly (6) includes a first nozzle (61) slidably connected within the grouting head (4), a first annular groove (611) is provided on the first nozzle (61), a second nozzle (62) is slidably connected within the first annular groove (611), and a sealing ring (621) is provided at the end of the second nozzle (62) away from the first nozzle (61); an elastic element (63) connected to the second nozzle (62) is provided on the first nozzle (61).

3. The pressure-adaptive road surface reinforcement grouting equipment according to claim 2, characterized in that, The elastic element (63) includes a spring (631) disposed outside the second nozzle (62), and a limiting block (632) is disposed on one end of the spring (631) away from the first nozzle (61), and the limiting block (632) is connected to the second nozzle (62).

4. The pressure-adaptive road surface reinforcement grouting equipment according to claim 1, characterized in that, The number of grouting heads (4) is three, and a linkage mechanism (5) is provided between two adjacent grouting heads (4).

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