Concrete maintenance device

Abstract

The utility model relates to the technical field of concrete maintenance, in particular to a concrete maintenance device. According to the concrete maintenance device, the first spraying assembly and the second spraying assembly are arranged, the problems that an existing concrete maintenance device is large in occupied space and inconvenient to transport or store can be solved, the third conveying pipe is movably arranged on the front side of the pipe body of the second conveying pipe, and according to the maintenance width of concrete, the third conveying pipe is fixed. The water spraying width can be adjusted by moving a third conveying pipe, in the moving process of the third conveying pipe, through the abutting effect of a first stirring plate and a second stirring plate, movement of a first sealing plate and a second sealing plate can be controlled, opening and closing of a second conveying pipe and the third conveying pipe are controlled accordingly, operation is easy and convenient, and practicability is high. The position of the third conveying pipe can be freely adjusted by a worker according to needs, and after maintenance is finished, the third conveying pipe is completely moved to the front side of the second conveying pipe, so that the width of the maintenance device is only the width of the vehicle body, the occupied space is reduced, and transportation or storage is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete maintenance, in particular to a concrete maintenance device. Background Art

[0002] Concrete curing is to artificially create certain humidity and temperature conditions so that the newly poured concrete can harden and increase its strength normally or at an accelerated rate. The reason why concrete can gradually harden and increase its strength is the result of cement hydration, and cement hydration requires certain temperature and humidity conditions. The current method to increase the humidity of concrete is to sprinkle water on the concrete surface for curing.

[0003] The utility model with authorization announcement number CN218265061U discloses a concrete maintenance device, which solves the problem that the existing concrete maintenance device is inconvenient to adjust the maintenance width of concrete. However, the above patent controls the watering width by arranging multiple sprinkler pipes in parallel to adjust the maintenance width of concrete. The distance between the two farthest sprinkler pipes should be greater than the maximum maintenance width of concrete, which will inevitably cause the maintenance device to occupy a large space and is inconvenient to transport or store the maintenance device. Utility Model Content

[0004] (I) Technical Problem: The purpose of the present utility model is to provide a concrete maintenance device to solve the problem that the existing concrete maintenance device occupies a large space and is inconvenient to transport or store.

[0005] (II) Technical solution: To achieve the above-mentioned purpose, the utility model provides the following technical solution:

[0006] A concrete maintenance device comprises a vehicle body, a liquid storage tank and a first delivery pipe, wherein the liquid storage tank and the first delivery pipe are both located on the vehicle body, and further comprises a first spray assembly and a second spray assembly, wherein the first delivery pipe and the first spray assembly are fixedly connected, and the second spray assembly is movably arranged on the first spray assembly, the first spray assembly comprises a second delivery pipe, a first closing plate and a first toggle plate, the second delivery pipe is communicated with the first delivery pipe, a first closing plate movable groove and a first water flow channel are arranged on the second delivery pipe, the first closing plate movable groove and the first water flow channel are both located on the front side pipe wall of the second delivery pipe, the first closing plate movable groove and the first water flow channel are communicated, the first closing plate is movably arranged in the first closing plate movable groove, the first closing plate is provided with a second water flow channel, a first telescopic column and a toggle plate movable groove, the second water flow channel is adapted to the first water flow channel, one end of the first telescopic column is fixedly connected to the side end of the first closing plate, the other end of the first telescopic column is fixedly connected to the side wall of the first closing plate movable groove, the toggle plate movable groove is located at the first closing plate away from the first telescopic column, and the toggle plate movable groove is located at the first closing plate away from the first telescopic column. The first toggle plate is movably arranged in the movable groove of the toggle plate, and the front end of the first toggle plate is close to the second water flow channel. The second spraying assembly includes a third delivery pipe and a second closing plate, the third delivery pipe is movably arranged on the front side of the tube wall of the second delivery pipe, the third delivery pipe is provided with a second closing plate movable groove and a third water flow channel, the second closing plate movable groove and the third water flow channel are both located at the rear side of the tube wall of the third delivery pipe, the second closing plate is movably arranged in the movable groove of the second closing plate, the second closing plate movable groove and the third water flow channel are connected, the second closing plate is provided with a fourth water flow channel, a second telescopic column and a second toggle plate, the fourth water flow channel and the third water flow channel are adapted to each other, one end of the second telescopic column is fixedly connected to the side end of the second telescopic column, the other end of the second telescopic column is fixedly connected to the side wall of the movable groove of the second closing plate, the second toggle plate is fixedly arranged on the rear side of the second closing plate close to the second telescopic column, the second toggle plate abuts against the first toggle plate, and the height of the first toggle plate is higher than that of the second toggle plate.

[0007] Specifically, the second conveying pipe is also provided with a first movable groove, a second movable groove, a first spray hole and a first fastening hole. The first movable groove and the second movable groove are both located on the front side of the tube wall of the second conveying pipe. The first movable groove and the second movable groove are both connected to the movable groove of the first closing plate. The height of the second movable groove is higher than that of the first movable groove.

[0008] Specifically, the first toggle plate is movably disposed in the second moving groove, and the second toggle plate is movably disposed in the first moving groove.

[0009] Specifically, the first spray hole is located at the bottom of the second delivery pipe, the first fastening hole is located at the top of the second delivery pipe, and the first fastening hole is located directly above the first water flow channel.

[0010] Specifically, two first closing plates are provided, and the two first closing plates are symmetrically arranged on the left and right sides of the second conveying pipe, and the number of the first closing plate movable groove, the first water flow channel, the second movable groove, the first fastening hole and the first toggle plate are the same as the number of the first closing plate.

[0011] Specifically, the third conveying pipe is also provided with a third movable groove, a second spray hole and a second fastening hole. The third movable groove is located on the rear side of the tube wall of the third conveying pipe. The third movable groove is connected to the second closing plate movable groove. The second toggle plate is movably arranged in the third movable groove.

[0012] Specifically, the second spray hole is located at the bottom of the third delivery pipe, the second fastening hole is located at the top of the third delivery pipe, and the second fastening hole is located directly above the third water flow channel, and the second fastening hole is adapted to the first fastening hole.

[0013] Specifically, four second closing plates are provided, and the four second closing plates are evenly arranged on the third conveying pipe, and the number of the second closing plate movable groove, the third water flow channel, the third movable groove and the second fastening hole is the same as the number of the second closing plate.

[0014] Specifically, two groups of the second spraying assemblies are provided, and the two groups of the second spraying assemblies are symmetrically arranged on the left and right sides of the second conveying pipe.

[0015] Specifically, a water pump and a fixing plate are provided on the vehicle body, one end of the water pump is connected to the liquid storage tank, the other end of the water pump is fixedly connected to an end of the first delivery pipe away from the second delivery pipe, and the fixing plate is fixedly provided at the front side end of the vehicle body, and the fixing plate is used to fix the second delivery pipe.

[0016] (III) Beneficial effects: The utility model can effectively solve the problem that the existing concrete maintenance device occupies a large space and is inconvenient to transport or store by providing the first spray assembly and the second spray assembly. The third delivery pipe is movably arranged at the front side of the pipe body of the second delivery pipe. According to the maintenance width of the concrete, the width of the watering can be adjusted by moving the third delivery pipe. During the movement of the third delivery pipe, the movement of the first closing plate and the second closing plate can be controlled by the abutment of the first toggle plate and the second toggle plate, thereby controlling the opening and closing of the second delivery pipe and the third delivery pipe. The operation is simple, so that the staff can freely adjust the position of the third delivery pipe as needed. When the maintenance is completed, the third delivery pipe is completely moved to the front side of the second delivery pipe, so that the width of the maintenance device is only the width of the vehicle body, thereby reducing the occupied space and facilitating transportation or storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The technical solution and beneficial effects of the present invention will be made apparent by describing in detail the specific embodiments of the present invention in conjunction with the accompanying drawings.

[0018] Figure 1 This is a structural schematic diagram of a concrete maintenance device of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the first delivery pipe, the first spraying assembly and the second spraying assembly of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the first spray assembly of the utility model;

[0021] Figure 4 For this utility model Figure 3 The enlarged schematic diagram of point A in the middle;

[0022] Figure 5 This is a schematic diagram of the internal structure of the first spray assembly of the utility model;

[0023] Figure 6 This is a schematic diagram of the structure of the second spray assembly of the utility model;

[0024] Figure 7 This is a schematic diagram of the cooperation between the first closing plate and the second closing plate of the utility model;

[0025] Figure 8 This is a schematic structural diagram of the first closing plate of the utility model;

[0026] Fig. 9 This is a structural schematic diagram of the first toggle plate of the utility model;

[0027] Fig.10 This is a schematic diagram of the structure of the second closing plate of the utility model;

[0028] Fig.11 This is a schematic diagram of the structure of the second delivery pipe of the utility model;

[0029] Fig.12 For this utility model Fig.11 The enlarged schematic diagram of point B in the middle;

[0030] Fig.13 It is a cross-sectional view of the third delivery pipe of the utility model.

[0031] In the figure: 10. vehicle body; 13. water pump; 14. fixed plate; 20. liquid storage tank; 30. first delivery pipe; 40. first spray assembly; 41. second delivery pipe; 411. first closed plate movable groove; 412. first water flow channel; 413. first movable groove; 414. second movable groove; 415. first spray hole; 416. first fastening hole; 42. first closed plate; 421. second water flow channel; 422. first telescopic column; 423. movable groove of toggle plate; 43. first toggle plate; 50. second spray assembly; 51. third delivery pipe; 511. second closed plate movable groove; 512. third water flow channel; 513. third movable groove; 514. second spray hole; 515. second fastening hole; 52. second closed plate; 521. fourth water flow channel; 522. second telescopic column; 523. second toggle plate. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0033] like Figure 1 — Fig.13 As shown, a concrete maintenance device described in the utility model includes a vehicle body 10, a liquid storage tank 20 and a first delivery pipe 30, both of which are located on the vehicle body 10, and also includes a first spray assembly 40 and a second spray assembly 50, the first delivery pipe 30 and the first spray assembly 40 are fixedly connected, the second spray assembly 50 is movably arranged on the first spray assembly 40, the first spray assembly 40 and the second spray assembly 50 are used to spray water on concrete, and the second spray assembly 50 is moved to the left and right sides of the first spray assembly 40 to increase the water spraying width. When the maintenance device needs to be transported or stored, the second spray assembly 50 is moved to the front side of the first spray assembly 40 to reduce the occupied space, and the water in the liquid storage tank 20 enters the first spray assembly 40 and the second spray assembly 50 through the first delivery pipe 30.

[0034] Among them, the first spraying assembly 40 includes a second delivery pipe 41, a first closing plate 42 and a first toggle plate 43. The second delivery pipe 41 is connected to the first delivery pipe 30. The second delivery pipe 41 is used to spray water onto concrete. The second delivery pipe 41 is provided with a first closing plate movable groove 411 and a first water flow channel 412. The first closing plate movable groove 411 and the first water flow channel 412 are both located on the front side wall of the second delivery pipe 41. The first closing plate movable groove 411 and the first water flow channel 412 are connected. The water in the second delivery pipe 41 can flow into the second spraying assembly 50 through the first water flow channel 412.

[0035] Furthermore, the first closing plate 42 is movably arranged in the first closing plate movable groove 411, and the first closing plate 42 is provided with a second water flow channel 421, a first telescopic column 422 and a toggle plate movable groove 423, the second water flow channel 421 is adapted to the first water flow channel 412, when the second water flow channel 421 overlaps with the first water flow channel 412, the second delivery pipe 41 is opened, and the water in the second delivery pipe 41 can flow into the second spray assembly 50, and when the second water flow channel 421 does not overlap with the first water flow channel 412 at all, the first closing plate 42 blocks the first water flow channel 412, and the second delivery pipe 41 is closed.

[0036] Further, one end of the first telescopic column 422 is fixedly connected to the side end of the first closed plate 42, and the other end of the first telescopic column 422 is fixedly connected to the side wall of the first closed plate movable groove 411. A first spring is arranged in the first telescopic column 422, and the toggle plate movable groove 423 is located at one end of the first closed plate 42 away from the first telescopic column 422. The first toggle plate 43 is movably arranged in the toggle plate movable groove 423, and the first toggle plate 43 can drive the first closed plate 42 to move. Figure 4 and Fig. 9 As shown, a front end of the first shifting plate 43 close to the second water flow channel 421 is an inclined surface, and a second spring is disposed at the rear end of the first shifting plate 43 .

[0037] Among them, the second spraying assembly 50 includes a third conveying pipe 51 and a second closing plate 52. The third conveying pipe 51 is movably arranged on the front side of the pipe wall of the second conveying pipe 41. The second spraying assembly 50 is not only used to increase the water sprinkling width, but also can freely adjust the water sprinkling width according to the maintenance width of the concrete to meet the maintenance needs of concrete of different widths. The third conveying pipe 51 is provided with a second closing plate movable groove 511 and a third water flow channel 512. The second closing plate movable groove 511 and the third water flow channel 512 are both located on the rear side of the pipe wall of the third conveying pipe 51. The second closing plate movable groove 511 and the third water flow channel 512 are connected. When the third water flow channel 512 overlaps with the first water flow channel 412, the water in the second conveying pipe 41 can enter the third conveying pipe 51 through the first water flow channel 412 and the third water flow channel 512.

[0038] Furthermore, the second closing plate 52 is movably arranged in the second closing plate movable groove 511, and the second closing plate 52 is provided with a fourth water flow channel 521, a second telescopic column 522 and a second toggle plate 523. The fourth water flow channel 521 is adapted to the third water flow channel 512. When the fourth water flow channel 521 overlaps with the third water flow channel 512, the third delivery pipe 51 is opened, and the water in the second delivery pipe 41 can flow into the third delivery pipe 51. When the fourth water flow channel 521 does not overlap with the third water flow channel 512 at all, the second closing plate 52 blocks the third water flow channel 512, and the third delivery pipe 51 is closed.

[0039] Furthermore, one end of the second telescopic column 522 is fixedly connected to the side end of the second closed plate 52, and the other end of the second telescopic column 522 is fixedly connected to the side wall of the second closed plate movable groove 511, and a third spring is arranged in the second telescopic column 522. The second toggle plate 523 is fixedly arranged on the rear side surface of one end of the second closed plate 52 close to the second telescopic column 522. The second toggle plate 523 can drive the second closed plate 52 to move, and the second toggle plate 523 abuts against the first toggle plate 43. The height of the first toggle plate 43 is higher than that of the second toggle plate 523.

[0040] The second delivery pipe 41 is also provided with a first moving groove 413, a second moving groove 414, a first spray hole 415 and a first fastening hole 416. The first moving groove 413 and the second moving groove 414 are both located at the front side of the pipe wall of the second delivery pipe 41. The first moving groove 413 and the second moving groove 414 are both connected to the first closing plate movable groove 411. The height of the second moving groove 414 is higher than that of the first moving groove 413. Figure 4 As shown, the connection between the first moving groove 413 and the second moving groove 414 is set as an inclined surface, and is adapted to the inclined surface of the first shifting plate 43 .

[0041] Furthermore, the first toggle plate 43 is movably disposed in the second moving groove 414. Figure 4 When the inclined surface of the connection between the first moving groove 413 and the second moving groove 414 is shown, the first toggle plate 43 is pushed to move into the toggle plate movable groove 423. At this time, the second spring is compressed and the second toggle plate 523 is movably arranged in the first moving groove 413.

[0042] Furthermore, the first spray hole 415 is located at the bottom of the second delivery pipe 41 , and the water in the second delivery pipe 41 is sprayed onto the concrete through the first spray hole 415 . The first fastening hole 416 is located at the top of the second delivery pipe 41 , and the first fastening hole 416 is located directly above the first water flow channel 412 .

[0043] Furthermore, two first closing plates 42 are provided, and the two first closing plates 42 are symmetrically arranged on the left and right sides of the second conveying pipe 41, and the number of the first closing plate movable groove 411, the first water flow channel 412, the second movable groove 414, the first fastening hole 416 and the first toggle plate 43 are the same as the number of the first closing plates 42.

[0044] Among them, the third conveying pipe 51 is also provided with a third movable groove 513, a second spray hole 514 and a second fastening hole 515. The third movable groove 513 is located on the rear side of the tube wall of the third conveying pipe 51. The third movable groove 513 is connected to the second closing plate movable groove 511, and the second toggle plate 523 is movably arranged in the third movable groove 513.

[0045] Furthermore, the second spray hole 514 is located at the bottom of the third delivery pipe 51, and the water in the third delivery pipe 51 is sprayed onto the concrete through the second spray hole 514. The second fastening hole 515 is located at the top of the third delivery pipe 51, and the second fastening hole 515 is located directly above the third water flow channel 512. The second fastening hole 515 is adapted to the first fastening hole 416. The fastener passes through the second fastening hole 515 and the first fastening hole 416 in sequence, which is not only used to fix the third delivery pipe 51 on the second delivery pipe 41, but also to position the first water flow channel 412 and the third water flow channel 512, so that the first water flow channel 412 and the third water flow channel 512 completely overlap, thereby ensuring that the water in the second delivery pipe 41 can flow into the third delivery pipe 51.

[0046] Furthermore, four second closing plates 52 are provided, and the four second closing plates 52 are evenly arranged on the third conveying pipe 51 , and the number of second closing plate movable grooves 511 , third water flow channels 512 , third movable grooves 513 and second fastening holes 515 are the same as the number of second closing plates 52 .

[0047] Furthermore, two groups of the second spraying assemblies 50 are provided, and the two groups of the second spraying assemblies 50 are symmetrically arranged on the left and right sides of the second conveying pipe 41 .

[0048] Among them, a water pump 13 and a fixing plate 14 are provided on the vehicle body 10. One end of the water pump 13 is connected to the liquid storage tank 20, and the other end of the water pump 13 is fixedly connected to an end of the first delivery pipe 30 away from the second delivery pipe 41. When the water pump 13 is started, the water pump 13 can extract water from the liquid storage tank 20 and deliver the extracted water into the second delivery pipe 41 and the third delivery pipe 51 through the first delivery pipe 30. The fixing plate 14 is fixedly arranged at the front side end of the vehicle body 10, and the fixing plate 14 is used to fix the second delivery pipe 41.

[0049] The working principle of the utility model is as follows: before watering maintenance, the watering width needs to be adjusted according to the maintenance width of the concrete. First, the third delivery pipe 51 is moved to the left and right sides of the second delivery pipe 41. During the movement of the third delivery pipe 51 on the right side, the third delivery pipe 51 drives the second closing plate 52 to move, and the second closing plate 52 drives the second toggle plate 523 to move in the first moving groove 413. When the second toggle plate 523 on the far right moves to abut against the first toggle plate 43, the third delivery pipe 51 continues to move rightward. Under the push of the second toggle plate 523, the first toggle plate 43 moves to the right side of the second moving groove 414, and the first toggle plate 43 also drives the first closing plate 42 to move to the second moving groove 414. When the first locking cam 414 is in the unlocking state, the locking cam 422 is in the unlocking state, and the third locking cam 423 is in the unlocking state, and the ...

[0050] If it is necessary to continue to adjust the watering width, the third delivery pipe 51 is continuously moved to the right, the first toggle plate 43 is pushed to the inclined surface where the first moving groove 413 and the second moving groove 414 are connected, the first toggle plate 43 is pushed to move into the toggle plate movable groove 423, the second spring is compressed until the first toggle plate 43 is completely moved into the toggle plate sliding groove 423, at this time, there is no abutment between the first toggle plate 43 and the second toggle plate 523, under the elastic force of the first spring, the first closing plate 42 is moved to the leftmost side of the first closing plate movable groove 411, Under the elastic force of the second spring, the second closing plate 52 is moved to the rightmost side of the second closing plate movable groove 511, the second delivery pipe 41 and the third delivery pipe 51 are closed, and the third delivery pipe 51 continues to be moved to the right, and the second second toggle plate 523 on the right side moves to abut against the first toggle plate 43, and the above steps are repeated until the third delivery pipe 51 is adjusted to a suitable position, and then fasteners are used to pass through the second fastening hole 515 and the first fastening hole 416 in turn to fix the third delivery pipe 51. Similarly, the movement principle of the third delivery pipe 51 on the left is the same.

[0051] Then the water pump 13 is started, and the water pump 13 can extract water from the liquid storage tank 20 and send the extracted water into the second delivery pipe 41 and the third delivery pipe 51 through the first delivery pipe 30, and spray the water onto the concrete through the first spray hole 415 and the second spray hole 514.

[0052] The utility model can effectively solve the problem that the existing concrete maintenance device occupies a large space and is inconvenient to transport or store by arranging the first spraying assembly and the second spraying assembly. The third delivery pipe is movably arranged at the front side of the pipe body of the second delivery pipe. According to the maintenance width of the concrete, the width of the watering can be adjusted by moving the third delivery pipe. During the movement of the third delivery pipe, the movement of the first closing plate and the second closing plate can be controlled by the abutment of the first toggle plate and the second toggle plate, thereby controlling the opening and closing of the second delivery pipe and the third delivery pipe. The operation is simple and convenient, so that the staff can freely adjust the position of the third delivery pipe as needed. When the maintenance is completed, the third delivery pipe is completely moved to the front side of the second delivery pipe, so that the width of the maintenance device is only the width of the vehicle body, thereby reducing the occupied space and facilitating transportation or storage.

[0053] The above are only implementation methods of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A concrete maintenance device, comprising a vehicle body, a liquid storage tank and a first delivery pipe, wherein the liquid storage tank and the first delivery pipe are both located on the vehicle body, characterized in that: The invention also includes a first spray assembly and a second spray assembly, wherein the first delivery pipe is fixedly connected to the first spray assembly, and the second spray assembly is movably arranged on the first spray assembly. The first spray assembly includes a second delivery pipe, a first closing plate and a first toggle plate, and the second delivery pipe is communicated with the first delivery pipe. The second delivery pipe is provided with a first closing plate movable groove and a first water flow channel, and the first closing plate movable groove and the first water flow channel are both located on the front side wall of the second delivery pipe, and the first closing plate movable groove is communicated with the first water flow channel, and the first closing plate is movably arranged in the first closing plate movable groove, and the first closing plate is provided with a second water flow channel, a first telescopic column and a toggle plate movable groove, and the second water flow channel is adapted to the first water flow channel, one end of the first telescopic column is fixedly connected to the side end of the first closing plate, and the other end of the first telescopic column is fixedly connected to the side wall of the first closing plate movable groove, and the toggle plate movable groove is located at an end of the first closing plate away from the first telescopic column, and the first toggle plate is movably arranged in the toggle plate movable groove, and a front end of the first toggle plate close to the second water flow channel is an inclined surface; The second spray assembly includes a third conveying pipe and a second closing plate, the third conveying pipe being movably arranged on the front side of the tube wall of the second conveying pipe, the third conveying pipe being provided with a second closing plate movable groove and a third water flow channel, the second closing plate movable groove and the third water flow channel being both located on the rear side of the tube wall of the third conveying pipe, the second closing plate being movably arranged in the second closing plate movable groove, the second closing plate movable groove and the third water flow channel being communicated, a fourth water flow channel, a second telescopic column and a second toggle plate being provided on the second closing plate, the fourth water flow channel being adapted to the third water flow channel, one end of the second telescopic column being fixedly connected to the side end of the second closing plate, the other end of the second telescopic column being fixedly connected to the side wall of the movable groove of the second closing plate, the second toggle plate being fixedly arranged on the rear side surface of one end of the second closing plate close to the second telescopic column, the second toggle plate abutting against the first toggle plate, and the height of the first toggle plate being higher than that of the second toggle plate.

2. The concrete maintenance device according to claim 1, characterized in that: The second conveying pipe is also provided with a first movable groove, a second movable groove, a first spray hole and a first fastening hole. The first movable groove and the second movable groove are both located on the front side of the tube wall of the second conveying pipe. The first movable groove and the second movable groove are both connected to the movable groove of the first closing plate. The height of the second movable groove is higher than that of the first movable groove.

3. The concrete maintenance device according to claim 2, characterized in that: The first shifting plate is movably disposed in the second moving groove, and the second shifting plate is movably disposed in the first moving groove.

4. The concrete maintenance device according to claim 3, characterized in that: The first spray hole is located at the bottom of the second delivery pipe, the first fastening hole is located at the top of the second delivery pipe, and the first fastening hole is located directly above the first water flow channel.

5. The concrete maintenance device according to claim 4, characterized in that: There are two first closing plates, which are symmetrically arranged on the left and right sides of the second conveying pipe. The number of the first closing plate movable groove, the first water flow channel, the second movable groove, the first fastening hole and the first toggle plate is the same as the number of the first closing plate.

6. The concrete maintenance device according to claim 2, characterized in that: The third conveying pipe is also provided with a third movable groove, a second spraying hole and a second fastening hole. The third movable groove is located on the rear side of the tube wall of the third conveying pipe. The third movable groove is connected with the second closing plate movable groove. The second toggle plate is movably arranged in the third movable groove.

7. The concrete maintenance device according to claim 6, characterized in that: The second spray hole is located at the bottom of the third delivery pipe, the second fastening hole is located at the top of the third delivery pipe, and the second fastening hole is located directly above the third water flow channel, and the second fastening hole is adapted to the first fastening hole.

8. The concrete maintenance device according to claim 7, characterized in that: There are four second closing plates, and the four second closing plates are evenly arranged on the third conveying pipe. The number of the second closing plate movable grooves, the third water flow channels, the third movable grooves and the second fastening holes are the same as the number of the second closing plates.

9. The concrete maintenance device according to claim 6, characterized in that: The second spraying components are provided in two groups, and the two groups of the second spraying components are symmetrically arranged on the left and right sides of the second conveying pipe.

10. The concrete maintenance device according to claim 6, characterized in that: A water pump and a fixing plate are provided on the vehicle body, one end of the water pump is communicated with the liquid storage tank, the other end of the water pump is fixedly connected to an end of the first delivery pipe away from the second delivery pipe, the fixing plate is fixedly provided at the front side end of the vehicle body, and the fixing plate is used to fix the second delivery pipe.

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