A non-excavation grouting repair device for dike cracks in water conservancy reinforcement and maintenance

Abstract

This utility model discloses a non-excavation grouting repair device for dike cracks in water conservancy reinforcement, belonging to the field of dike engineering technology. The device includes a grouting assembly and a scraper assembly. The grouting assembly includes a shell and a grouting head penetrating the middle of the shell. The grouting head is connected to a feeding hose. An electric telescopic rod is installed inside the shell, and the telescopic end of the electric telescopic rod is fixedly connected to a push plate, which is fixedly connected to the grouting head. During grouting, the scraper of this utility model moves closely against the dike crack opening, using mechanical extrusion to expel air from the crack and push the grout to penetrate deeper. The electric telescopic rod drives the reciprocating motion of the elastic pressure plate, further squeezing the grout into the crack opening, effectively solving the problem of hollow areas easily appearing in deep cracks, thereby improving the grout filling efficiency and density, and enhancing the structural stability of the dike.

Description

Technical Field

[0001] This utility model relates to the field of dam engineering technology, and in particular to a non-excavation dam crack grouting repair device for water conservancy risk mitigation and reinforcement. Background Technology

[0002] In the field of water conservancy engineering, dams are important infrastructure for resisting floods and regulating water flow, and their safety is directly related to the safety of people's lives and property and the ecological environment. With the increase of service time and the influence of complex environmental factors, dams are prone to cracks. If they are not repaired in time, they may cause serious consequences such as seepage, piping, or even dam failure.

[0003] Currently, the main technology for repairing cracks in dams is grouting, which involves injecting grout into the cracks to fill and reinforce them. However, traditional grouting equipment has many shortcomings. On the one hand, it is difficult to ensure that the grout fills the cracks evenly and completely during the grouting process, often resulting in hollow cracks and incomplete grouting, which affects the repair effect and the structural strength of the dam. On the other hand, excess grout on the surface of the cracks cannot be treated in time after grouting, resulting in an uneven surface in the repaired area, which not only affects the aesthetics but also makes it easier for the surface to deteriorate under the erosion of water flow.

[0004] In addition, when repairing long cracks with hand-held grouting equipment, the labor intensity is high, the work efficiency is low, and it is difficult to effectively control the grouting process. Utility Model Content

[0005] The purpose of this invention is to solve the problems of poor repair effect of dam cracks in the existing technology, the possibility of structural strength being affected by incomplete repair, and low work efficiency and high labor intensity when repairing long cracks manually. Therefore, a non-excavation dam crack grouting repair device is proposed for water conservancy risk elimination and reinforcement.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A non-excavation grouting repair device for water conservancy risk mitigation and reinforcement includes a grouting assembly and a scraper assembly. The grouting assembly includes a shell and a grouting head penetrating the middle of the shell. The grouting head is connected to a feeding hose. An electric telescopic rod is provided inside the shell. The telescopic end of the electric telescopic rod is fixedly connected to a push plate. The push plate is fixedly connected to the grouting head.

[0008] In some embodiments, the scraper assembly includes a support plate and a swing plate hinged to the support plate. The swing plate is elastically connected to the support plate by a torsion spring. The end of the swing plate is provided with a scraper, which is in close contact with the surface of the dam crack under the action of the torsion spring.

[0009] In some embodiments, the end of the grouting head is provided with an elastic pressure plate, and the electric telescopic rod drives the elastic pressure plate to move back and forth to squeeze the grout into the depth of the crack; the elastic pressure plate is repeatedly deformed under the drive of the electric telescopic rod to enhance the penetration force of the grout into the depth of the dam crack.

[0010] In some embodiments, two electric telescopic rods are provided and arranged diagonally. The housing is provided with a limiting cylinder and a limiting post. The limiting post is fixedly connected to the limiting strip to improve the stability of the push plate movement. The scraper is wider than the crack width and is used to scrape the overflowing slurry at the crack opening and make the repair surface flush with the dam.

[0011] In some embodiments, the feed hose connects the grouting pump and the storage tank, and the storage tank is equipped with a stirring device to prevent the grout from solidifying.

[0012] In some embodiments, the grouting head has a flattened end to accommodate crack insertion.

[0013] In some embodiments, a mounting bracket is further included, the top of which is provided with a guide rail groove for limiting the handle, and the bottom of which is provided with a sliding groove that slides in cooperation with a slider at the bottom of the housing.

[0014] In some embodiments, the bottom of the housing is connected to a support plate via a spring, and the bottom of the support plate is provided with a slider for adjusting the vertical position of the grouting head.

[0015] In some embodiments, the handle is detachable and adjustable in length to accommodate the installation requirements of the mounting bracket.

[0016] Compared with the prior art, this utility model provides a non-excavation grouting repair device for dam cracks in water conservancy reinforcement and maintenance, which has the following beneficial effects.

[0017] 1. This utility model utilizes a scraper assembly where the scraper moves closely to the crack opening of the dam during grouting. The mechanical compression forces air out of the crack, propelling the grout deeper and significantly improving the filling effect on small, branching cracks. The electric telescopic rod drives the reciprocating motion of the elastic pressure plate, further squeezing the grout into the crack opening, effectively solving the problem of hollow areas easily appearing in deep cracks. This improves the grout filling efficiency and density, enhancing the structural stability of the dam.

[0018] 2. In this utility model, the scraper can not only scrape off the excess slurry overflowing from the crack during the movement process, making the surface of the repaired dam crack flush with the dam body, thus improving the aesthetics, but also form a uniform and dense surface layer, reducing the scouring of the repaired area by water flow, reducing the risk of secondary damage, and improving the durability of the repair effect.

[0019] 3. This utility model, with its mounting frame and supporting components designed for repairing long cracks, transforms manual hand-held operation into track-assisted sliding operation, significantly reducing the physical burden on workers. Continuous grouting operations supported by the track reduce manual adjustment time, thereby improving construction efficiency.

[0020] Other advantages, objectives and features of this invention will be set forth in part in the description which follows; and in part will be apparent to those skilled in the art upon examination of the following description; or may be taught from practice of this invention. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the grouting assembly and scraper assembly of this utility model.

[0022] Figure 2 This is a schematic diagram of the internal structure of the housing of this utility model.

[0023] Figure 3 This utility model Figure 2 A magnified structural diagram of region A in the middle.

[0024] Figure 4 This is a schematic diagram of the scraper assembly of this utility model.

[0025] Figure 5 This utility model Figure 4 Enlarged structural diagram of region B.

[0026] Figure 6 This is a schematic diagram of the elastic pressure plate deformation structure of this utility model.

[0027] Figure 7 This is a schematic diagram of the mounting bracket of this utility model.

[0028] Figure 8 This utility model Figure 7 A magnified structural diagram of region C.

[0029] In the picture:

[0030] 1. Grouting assembly; 101. Housing; 102. Grouting head; 1021. Elastic pressure plate; 103. Feed hose; 104. Electric telescopic rod; 105. Push plate; 1051. Limiting groove; 1052. Limiting strip; 106. Handle; 107. Limiting cylinder; 1071. Limiting post; 108. Spring; 1081. Support plate; 1082. Slider; 2. Scraper assembly; 201. Support plate; 202. Hinge post; 203. Connecting plate; 204. Torsion spring; 205. Swing plate; 206. Scraper; 3. Mounting bracket; 301. Guide rail groove; 302. Slide groove. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0032] Reference Figure 1-8 A non-excavation grouting repair device for dam cracks in water conservancy reinforcement includes a grouting component 1 and a scraper component 2. The grouting component 1 includes a housing 101 and a grouting head 102. The grouting head 102 is connected to a feeding hose 103 and penetrates the middle of the housing 101. An electric telescopic rod 104 is provided inside the housing 101. A push plate 105 is fixedly connected to the telescopic end of the electric telescopic rod 104. The push plate 105 is slidably connected inside the housing 101 and is fixedly connected to the grouting head 102.

[0033] The push plate 105 has a limiting groove 1051 on its outer side, and a limiting strip 1052 is provided on the inner side of the housing 101 at the position corresponding to the limiting groove 1051. The limiting strip 1052 and the limiting groove 1051 provide horizontal limiting for the push plate 105.

[0034] As one embodiment of the scraper assembly 2, the scraper assembly 2 includes a support plate 201, which is fixedly connected to the housing 101 via a connecting plate 203. A hinge column 202 is rotatably connected to the support plate 201, and a swing plate 205 is provided on the hinge column 202. A torsion spring 204 is provided between the hinge column 202 and the support plate 201. A scraper 206 is provided at the end of the swing plate 205 away from the hinge column 202. After the scraper 206 approaches the dam wall, the grouting assembly 1 continues to approach the dam wall. The scraper 206 and the swing plate 205 in the scraper assembly 2 will deviate around the swing plate 205 as the center. The torsion spring 204 rotates, and under the restoring force of the torsion spring 204, the scraper 206 is tightly attached to the dam wall.

[0035] An elastic pressure plate 1021 is provided at the end of the grouting head 102 away from the feed hose 103.

[0036] As a further optional solution, two electric telescopic rods 104 are provided, arranged diagonally. A limiting cylinder 107 is provided inside the housing 101, and a limiting post 1071 is slidably connected inside the limiting cylinder 107. The end of the limiting post 1071 away from the limiting cylinder 107 is fixedly connected to a limiting strip 1052. Two limiting cylinders 107 are provided, arranged diagonally, and the two electric telescopic rods 104 are respectively arranged intersecting with the two limiting cylinders 107. The two electric telescopic rods 104, in conjunction with the two limiting cylinders 107, respectively limit the two limiting posts 1071, improving the stability of the horizontal movement of the push plate 105.

[0037] In this utility model, the end of the feeding hose 103 away from the grouting head 102 is connected to a grouting pump. The feeding hose 103 is fixedly connected to the outlet end of the grouting pump. The inlet end of the grouting pump is connected to the storage tank through a pipe. The storage tank is equipped with a stirring device for mixing the slurry in the storage tank to prevent the slurry in the storage tank from solidifying or settling.

[0038] The end of the grouting head 102 can be flattened to facilitate insertion into the cracks in the dam.

[0039] When in use, the device is picked up by the handle 106 and the connecting plate 203. The holding method is to hold the handle 106 with the right hand and the support plate 201 with the left hand. Then, the end of the grouting head 102 is aligned with the crack in the dam. The grouting pump switch is turned on, and the grouting pump injects the grout in the storage tank into the crack in the dam through the end of the grouting head 102. The grout can be cement grout or polyurethane grout.

[0040] For dam cracks of a certain length, the user holds the handle 106 and connecting plate 203 and moves the device horizontally from left to right along the crack path. During the movement, the grouting pump remains running, allowing grout to continuously fill the dam crack through the grouting head 102. It is important to note that during the grout injection phase, the user controls the device to move closer to the dam crack using the handle 106 and connecting plate 203. Under the hinge action of the hinged column 202 and the support plate 201, the scraper 206 rotates around the center point of the hinged column 202, compressing the torsion spring 204. Through the rebound force of the torsion spring 204, the side of the scraper 206 closest to the dam crack tightens. When repairing cracks in a dam, the scraper 206 is wider than the crack itself. As grout is injected into the crack, the user moves the device from left to right along the crack. The scraper 206 smooths out any excess grout. The scraper 206 exerts mechanical pressure on the grout at the crack opening, causing it to spread deeper into the crack, increasing its penetration depth and coverage. Simultaneously, the scraper moves close to the crack opening, removing excess grout. This ensures the repaired crack surface is flush with the dam body, preventing bumps or depressions, improving aesthetics, and reducing water erosion of the repaired area.

[0041] However, when the grout is squeezed against the dam cracks by the scraper 206, it is difficult for the grout to quickly penetrate and fill the cracks, especially for deeper cracks. This may result in hollow areas within the cracks. To address this, the following improvements are made:

[0042] During use, the telescopic end of the electric telescopic rod 104 drives the push plate 105 to move back and forth, bringing the elastic pressure plate 1021 close to the crack opening of the dam. Under the extension action of the telescopic end of the electric telescopic rod 104, the elastic pressure plate 1021 deforms under the constraint of the crack opening. At the same time, the telescopic end of the electric telescopic rod 104 continues to drive the grouting head 102 and the elastic pressure plate 1021 to move towards the crack opening of the dam. During this process, grout continuously replenishes the crack opening of the dam. As the telescopic end of the electric telescopic rod 104 drives the elastic pressure plate 1021 to move back and forth repeatedly, the elastic pressure plate 1021 repeatedly deforms elastically. When the elastic pressure plate 1021 moves into the crack opening of the dam along with the grouting head 102, it pushes the grout at the crack opening of the dam out and squeezes it into the crack opening of the dam to improve the filling efficiency of the grout in the deep dam crack. When the grout begins to accumulate at the crack opening of the dam, it indicates that the deep dam crack has been filled. The device continues to move from left to right to fill the remaining dam crack.

[0043] In practical use, users have found that dam cracks are generally continuous, including long, continuous cracks. Repairing dam cracks by hand-holding the device and injecting grout can be physically demanding. Therefore, the above technical solution has been further improved:

[0044] It also includes a mounting bracket 3, the top of which has a guide rail groove 301. The width of the guide rail groove 301 is adapted to the thickness of the handle 106. The guide rail groove 301 horizontally limits the handle 106. The bottom inner side of the mounting bracket 3 has a sliding groove 302. The bottom of the housing 101 has a spring 108. The bottom of the spring 108 has a support plate 1081. The bottom of the support plate 1081 has a slider 1082 that slides and limits the sliding groove 302. The spring 108, support plate 1081 and slider 1082 are additional components that can be detachably installed at the bottom of the housing 101. The handle 106 can be detachably installed at the top of the housing 101. When this additional component is installed into the mounting bracket 3, a longer handle 106 is installed at the top of the housing 101.

[0045] Before use, for longer dam cracks, firstly, the grouting component 1 with the added components and the scraper component 2 are set inside the mounting frame 3, the handle 106 corresponds to the guide rail groove 301, and the slider 1082 corresponds to the slide groove 302. Then, a mounting frame 3 is laid along the dam crack and the mounting frame 3 is fixed. The upper part of the handle 106 extends out of the mounting frame 3.

[0046] In use, the sliding engagement between the slider 1082 and the groove 302 facilitates the horizontal sliding of the grouting assembly 1 and the scraper assembly 2. The grouting method has been described above and will not be repeated here. When dealing with non-straight dam cracks, during the grouting process, the user moves the handle 106 up and down to compress or stretch the spring 108, adjusting the horizontal position of the housing 101 within the mounting frame 3. The grouting head 102 moves up and down synchronously with the housing 101, allowing the grouting head 102 to perform grouting repair on the dam cracks.

[0047] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0048] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

Claims

1. A non-excavation grouting repair device for dike cracks in water conservancy reinforcement, comprising a grouting assembly (1) and a scraper assembly (2), characterized in that, The grouting assembly (1) includes a housing (101) and a grouting head (102) penetrating the middle of the housing (101). The grouting head (102) is connected to a feeding hose (103). An electric telescopic rod (104) is provided inside the housing (101). The telescopic end of the electric telescopic rod (104) is fixedly connected to a push plate (105). The push plate (105) is fixedly connected to the grouting head (102).

2. The non-excavation dam crack grouting repair device for water conservancy risk mitigation and reinforcement according to claim 1, characterized in that, The scraper assembly (2) includes a support plate (201) and a swing plate (205) hinged to the support plate (201). The swing plate (205) is elastically connected to the support plate (201) by a torsion spring (204). The end of the swing plate (205) is provided with a scraper (206). The scraper (206) is in close contact with the surface of the dam crack under the action of the torsion spring (204).

3. The non-excavation dam crack grouting repair device for water conservancy risk mitigation and reinforcement according to claim 1, characterized in that, The grouting head (102) is provided with an elastic pressure plate (1021) at its end. The electric telescopic rod (104) drives the elastic pressure plate (1021) to move back and forth to squeeze the grout into the depth of the crack. The elastic pressure plate (1021) is repeatedly deformed under the drive of the electric telescopic rod (104) to enhance the penetration force of the grout into the depth of the crack in the dam.

4. The non-excavation dam crack grouting repair device for water conservancy risk mitigation and reinforcement according to claim 1, characterized in that, Two electric telescopic rods (104) are provided and arranged diagonally. The housing (101) is provided with a limiting cylinder (107) and a limiting post (1071) inside. The limiting post (1071) is fixedly connected to the limiting strip (1052) to improve the movement stability of the push plate (105). The scraper (206) is wider than the crack width and is used to scrape the overflow of grout from the crack opening and make the repair surface flush with the dam.

5. The non-excavation dam crack grouting repair device for water conservancy risk mitigation and reinforcement according to claim 1, characterized in that, The feed hose (103) connects the grouting pump and the storage tank, and the storage tank is equipped with a stirring device to prevent the grout from solidifying.

6. The non-excavation dam crack grouting repair device for water conservancy risk mitigation and reinforcement according to claim 1, characterized in that, The end of the grouting head (102) is flat to accommodate crack insertion.

7. The non-excavation dam crack grouting repair device for water conservancy risk mitigation and reinforcement according to claim 1, characterized in that, It also includes a mounting bracket (3), the top of which is provided with a guide rail groove (301), the guide rail groove (301) is used to limit the handle (106), and the bottom of the mounting bracket (3) is provided with a sliding groove (302), the sliding groove (302) and the slider (1082) at the bottom of the housing (101) are in sliding cooperation.

8. The non-excavation dam crack grouting repair device for water conservancy risk mitigation and reinforcement according to claim 7, characterized in that, The bottom of the housing (101) is connected to the support plate (1081) by a spring (108). The bottom of the support plate (1081) is provided with a slider (1082) for adjusting the vertical position of the grouting head (102).

9. A non-excavation dam crack grouting repair device for water conservancy risk mitigation and reinforcement according to claim 7, characterized in that, The handle (106) is detachable and adjustable in length to accommodate the installation requirements of the mounting bracket (3).

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