A device for flushing slurry on the top surface of a foundation.

Abstract

This utility model belongs to the field of bridge construction technology, specifically a device for washing laitance on the top surface of a pier cap. It includes: a movable frame with a row of rollers at its bottom and two handles at its top; a row of equally spaced wire brushes located at the bottom of the movable frame and in front of the rollers, with a motor connected to the top of each wire brush for driving its rotation; a rebar sleeve, one of which is provided on the side of each wire brush, with openings at both ends for fitting the pier cap rebar forward; after fitting the pier cap rebar, the rebar sleeve can rotate 180° around the center of the rebar, and the wire brush can revolve around the rebar once; and a high-pressure nozzle, one of which is located behind each rebar sleeve and fixed to the movable frame. This utility model has the advantages of convenient operation, time and labor saving, and especially efficient cleaning of laitance near the roots of embedded rebars.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction technology; specifically, this utility model relates to a slurry flushing device for the top surface of a pier cap. Background Technology

[0002] During the pouring of concrete for bridge pier foundations, aggregates settle while water rises, forming a weak laitance layer on the top surface of the foundation. This laitance layer reduces the bond strength between the old and new concrete, leading to delamination, water seepage, or steel reinforcement corrosion. Therefore, washing away the laitance on the top surface of bridge pier foundations is a critical procedure after concrete construction, directly affecting the bonding quality and durability of subsequent structures.

[0003] Currently, the flushing of laitance on the top surface of the foundation is generally carried out during the period from the initial setting to the final setting of the concrete. The flushing method typically involves first manually removing loose laitance using a wire brush or broom, and then manually flushing with a handheld high-pressure water gun until uniform aggregate is exposed on the top surface of the foundation (exposed area ≥80%), with no mud residue remaining. While flushing laitance in the wider areas of the foundation top surface is relatively easy, the laitance around the embedded reinforcing bars, especially near the roots of the reinforcing bars, is very inefficient when handled manually with a handheld wire brush. In some cases, workers have to resort to using a handheld steel chisel for auxiliary cleaning. Furthermore, the gaps between the embedded reinforcing bars affect the laitance cleaning process, making this part of the laitance particularly difficult to clean. Utility Model Content

[0004] In view of this, the present invention provides a slurry flushing device for the top surface of a foundation, thereby solving or at least alleviating the above-mentioned problems existing in the prior art.

[0005] To achieve the aforementioned objectives, this utility model provides a slurry flushing device for the top surface of a foundation, comprising:

[0006] The mobile stand has a row of casters at the bottom and two handles at the top;

[0007] A row of equally spaced wire brushes is set at the bottom of the movable frame and in front of the rollers. The top of each wire brush is connected to a motor for driving its rotation.

[0008] A rebar sleeve is provided on the side of each wire brush, and both the front and rear ends of the rebar sleeve are provided with openings that can be fitted onto the foundation rebar. After the rebar sleeve is fitted onto the foundation rebar, it can rotate 180° around the center of the foundation rebar, and the wire brush can revolve around the foundation rebar once.

[0009] The first drive structure has one end connected to the steel bar sleeve and the other end connected to the handle. When the rear end of the handle is turned upward, it can drive the steel bar sleeve to rotate 180° around the center of the foundation steel bar.

[0010] The second drive structure is connected to the wire brush at one end and to the handle at the other end. When the rear end of the handle is rotated upward, it drives the wire brush to revolve around the foundation steel bar once.

[0011] Each high-pressure nozzle is installed behind the steel bar sleeve and is fixed on the mobile frame.

[0012] In the aforementioned slurry flushing device for the top surface of a foundation, optionally, the wire brush includes a brush body and a long shaft, the brush body is circular and fixed at the bottom end of the long shaft, and the power shaft of the motor is connected to the top end of the long shaft.

[0013] In the aforementioned slurry flushing device for the top surface of a foundation, optionally, the first driving structure includes a first driving rod, a first driving groove, and a first driving body. The first driving rod is rotatably mounted on the bottom of the movable frame, the reinforcing bar sleeve is fixed to the bottom of the first driving body, the first driving groove is provided in a spiral groove on the surface of the first driving rod, the first driving body is slidably disposed in the first driving groove, the first driving body is connected to the front end of a handle, and the handle can control the displacement of the first driving body in the height direction.

[0014] In the aforementioned slurry flushing device for the top surface of a foundation, optionally, the second driving structure includes a second driving rod, a second driving groove, and a second driving body. The second driving rod is rotatably mounted below the first driving rod, and the long shaft is connected to the second driving rod. The second driving groove is located in a spiral groove on the surface of the second driving rod. The second driving body is slidably disposed in the second driving groove. The second driving body is connected to a handle, and the handle can control the displacement of the second driving body in the height direction.

[0015] In the aforementioned slurry flushing device for the top surface of a foundation, optionally, a rotating plate is rotatably sleeved on the outside of the long shaft, and the end of the rotating plate away from the long shaft is fixedly connected to the second drive rod.

[0016] In the aforementioned slurry flushing device for the top surface of a foundation, optionally, a U-shaped connecting frame with an open opening facing downwards is fixedly connected to the upper part of the reinforcing bar sleeve, and a rotating rod with its top end fixedly connected to the first driving rod is fixedly installed on the top of the connecting frame, and the second driving body is rotatably sleeved outside the rotating rod.

[0017] In the aforementioned slurry flushing device for the top surface of a foundation, optionally, the movable frame is provided with lifting frames that correspond one-to-one with the wire brushes. The lifting frames have an inverted "F" shape, and the first drive body and the second drive body are respectively fixed at the two forward-facing ends of the lifting frames. The top of the lifting frame is connected to two handles through a synchronous plate. The handles can control the synchronous plate to move up and down on the movable frame. The first drive groove and the second drive groove have the same length, and the pitch of the first drive groove is twice that of the second drive groove.

[0018] In the aforementioned slurry flushing device for the top surface of a foundation, optionally, the area before both ends of the handle is rotatably engaged with the movable frame, the front end of the handle is provided with a strip groove, the top end of the synchronization plate is fixedly provided with a sliding rod, and the sliding rod passes through the strip groove.

[0019] In the aforementioned slurry flushing device for the top surface of a foundation, optionally, the two ends of the lifting frame facing forward are provided with sleeve holes respectively fitted outside the first drive rod and the second drive rod, and the first drive body and the second drive body are respectively fixedly installed on the inner wall surface of the two sleeve holes.

[0020] In the aforementioned slurry flushing device for the top surface of a foundation, the reinforcing bar sleeve may optionally include two side plates and an intermediate plate disposed between the two side plates, wherein the intermediate plate is movable between the two ends of the side plates.

[0021] This utility model's slurry flushing device for the top surface of a foundation allows workers to directly push the mobile frame to walk on the top surface of the foundation by installing a wire brush and a high-pressure water gun on a mobile frame. This enables the cleaning of slurry on various parts of the foundation top surface through a combination of wire brush pretreatment and high-pressure flushing, resulting in outstanding effects, high construction efficiency, and saving time and labor.

[0022] The slurry flushing device for the top surface of the foundation can efficiently clean the slurry at the base of the foundation reinforcement by having a wire brush revolve around the reinforcement. Compared with the existing technology of cleaning with a handheld wire brush or a handheld steel chisel, it is more time-saving, labor-saving and efficient.

[0023] The slurry flushing device for the top surface of the foundation can smoothly pass through the foundation reinforcement without being disturbed by the reinforcement, and has a comprehensive and efficient cleaning effect on the slurry on the top surface of the foundation. Attached Figure Description

[0024] The disclosure of this utility model will become more apparent with reference to the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings:

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This utility model Figure 1 A schematic diagram of the moving frame, handle, rollers, and high-pressure nozzle.

[0027] Figure 3 This utility model Figure 1 A schematic diagram of the synchronous plate, lifting frame, wire brush and rebar sleeve in the process;

[0028] Figure 4 This utility model Figure 3 A partial breakdown diagram.

[0029] Reference numerals: 1-Moving frame; 2-Roller; 3-Wire brush; 3.1-Brush body; 3.2-Long shaft; 4-Motor; 5-Rebar sleeve; 5.1-Side plate; 5.2-Intermediate plate; 6-High-pressure nozzle; 7-First drive rod; 8-First drive groove; 9-First drive body; 10-Second drive rod; 11-Second drive groove; 12-Second drive body; 13-Turn plate; 14-Connecting frame; 15-Turn rod; 16-Lifting frame; 17-Synchronous plate; 18-Strip groove; 19-Slide rod; 20-Sleeve hole. Detailed Implementation

[0030] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0031] like Figures 1 to 4 As shown, this embodiment provides a slurry flushing device for the top surface of a foundation, comprising:

[0032] The movable frame 1 has a row of rollers 2 at its bottom and two handles at its top; the movable frame 1 can be moved by holding the handles and pushing it on top of the foundation. The rollers 2 can pass through the gap between the reinforcing bars of two adjacent foundations.

[0033] A row of equally spaced wire brushes 3 are set at the bottom of the movable frame 1 and in front of the rollers 2. The top of the wire brushes 3 is connected to a motor 4 for driving its rotation. The wire brushes 3 can move on the top of the pier through the movable frame 1 and rotate under the action of the motor 4, so that they can contact the top of the pier during the displacement process and achieve pre-cleaning of the slurry on the top of the pier.

[0034] A rebar sleeve 5 is provided on the side of each wire brush 3, and both ends of the rebar sleeve 5 have openings that allow it to be fitted onto the foundation rebar. After being fitted onto the foundation rebar, the rebar sleeve 5 can rotate 180° around the center of the foundation rebar, and the wire brush 3 can revolve around the foundation rebar once. When using the wire brush 3 to clean the laitance on the top of the foundation, when encountering the foundation rebar, the moving frame 1 is pushed forward to allow the rebar sleeve 5 to be fitted onto the foundation rebar. Then, the rebar sleeve 5 rotates 180° around the foundation rebar to pass over it. At the same time, the wire brush 3 revolves around the foundation rebar to pre-clean the laitance near the root of the foundation rebar.

[0035] The first drive structure has one end connected to the rebar sleeve 5 and the other end connected to the handle. When the rear end of the handle is turned upward, it can drive the rebar sleeve 5 to rotate 180° around the center of the foundation rebar. The operator can directly control the rebar sleeve 5 to rotate around the foundation rebar by operating the handle and using the first drive structure to pass over the foundation rebar.

[0036] The second drive structure has one end connected to the wire brush 3 and the other end connected to the handle. When the rear end of the handle is rotated upward, it drives the wire brush 3 to revolve around the foundation reinforcement once. The operator can directly control the wire brush 3 to revolve around the foundation reinforcement once by operating the handle, so as to clean the laitance at the root of the foundation reinforcement.

[0037] High-pressure nozzles 6 are installed behind each reinforcing bar sleeve 5 and are fixed to the movable frame 1. Specifically, a water supply pipe is also provided at the bottom of the movable frame 1, and all high-pressure nozzles 6 are connected to the water supply pipe. One end of the water supply pipe can be connected to a high-pressure water pump through a flexible hose. The high-pressure water sprayed from the high-pressure nozzles 6 can perform high-pressure flushing of the slurry on the top surface of the foundation, and combined with the pretreatment effect of the wire brush 3, improve the flushing effect near the top surface of the foundation. Specifically, in this embodiment, the height of the high-pressure nozzles 6 is greater than the top height of the foundation reinforcing bars, and can be set to an inclined state of 15°.

[0038] As a relatively specific embodiment, the wire brush 3 includes a brush body 3.1 and a long shaft 3.2. The brush body 3.1 is circular and fixed to the bottom end of the long shaft 3.2. The power shaft of the motor 4 is connected to the top end of the long shaft 3.2.

[0039] As a relatively specific embodiment, the first driving structure includes a first driving rod 7, a first driving groove 8, and a first driving body 9. The first driving rod 7 is rotatably mounted on the bottom of the movable frame 1, the steel bar sleeve 5 is fixed to the bottom of the first driving body 9, the first driving groove 8 is a spiral groove on the surface of the first driving rod 7, the first driving body 9 is slidably disposed in the first driving groove 8, the first driving body 9 is connected to the front end of the handle, and the handle can control the displacement of the first driving body 9 in the height direction.

[0040] The second drive structure includes a second drive rod 10, a second drive groove 11, and a second drive body 12. The second drive rod 10 is rotatably mounted below the first drive rod 7, and its long shaft 3.2 is connected to the second drive rod 10. The second drive groove 11 is located in a spiral groove on the surface of the second drive rod 10. The second drive body 12 is slidably disposed in the second drive groove 11. The second drive body 12 is connected to a handle, and the handle can control the displacement of the second drive body 12 in the height direction.

[0041] Among them, the outer rotating sleeve of the long shaft 3.2 is provided with a rotating plate 13, and the end of the rotating plate 13 away from the long shaft 3.2 is fixedly connected to the second drive rod 10.

[0042] In this embodiment, the first drive rod 7 and the second drive rod 10 are arranged vertically, and the height of the second drive rod 10 should be greater than the height of the foundation reinforcement, so that it can smoothly pass over the foundation reinforcement.

[0043] A U-shaped connecting frame 14 with its opening facing downwards is fixedly connected to the upper part of the rebar sleeve 5. A rotating rod 15, whose top end is fixedly connected to the first drive rod 7, is fixedly installed on the top of the connecting frame 14, and the second drive body 12 is rotatably sleeved on the outside of the rotating rod 15. By setting the connecting frame 14, the top height of the connecting frame 14 is greater than the height of the foundation rebar, and both sides of the connecting frame 14 can rotate around the foundation rebar to ensure smooth passage over the foundation rebar. In addition, the rotating rod 15 effectively connects the first drive rod 7 and the second drive rod 10, so that the first drive rod 7 and the second drive rod 10 are concentric, ensuring that the rotation of the rebar sleeve 5 and the revolution center of the wire brush 3 coincide.

[0044] The mobile frame 1 is equipped with lifting frames 16 that correspond one-to-one with the wire brushes 3. The lifting frames 16 are in an inverted "F" shape. The first drive body 9 and the second drive body 12 are respectively fixed at the two front ends of the lifting frames 16. The top of the lifting frames 16 is connected to two handles through a synchronization plate 17. The handles can control the synchronization plate 17 to move up and down on the mobile frame 1. By setting the synchronization plate 17, the handles can be used to control all the lifting frames 16 to move up and down synchronously, so that all the rebar sleeves 5 and wire brushes 3 move synchronously.

[0045] The first drive groove 8 and the second drive groove 11 have the same length, and the pitch of the first drive groove 8 is twice that of the second drive groove 11. This ensures that when the lifting frame 16 is raised or lowered to the same height, the first drive rod 7 and the second drive rod 10 rotate synchronously, and the rotation angle of the first drive rod 7 is always twice the rotation angle of the second drive rod 10.

[0046] The area before both ends of the handle rotates and engages with the movable frame 1. A strip groove 18 is provided at the front end of the handle, and a sliding rod 19 is fixedly installed at the top of the synchronous plate 17, passing through the strip groove 18. When cleaning the laitance near the base of the foundation reinforcement, the handle is raised at its tail end, while the front end of the handle is pressed down, tending to keep the wire brush 3 in stable contact with the foundation, thus improving the cleaning effect on stubborn laitance at the base of the foundation reinforcement.

[0047] The lifting frame 16 has sleeve holes 20 at its forward-facing ends, which are respectively fitted onto the outside of the first drive rod 7 and the second drive rod 10. The first drive body 9 and the second drive body 12 are respectively fixedly mounted on the inner wall surfaces of the two sleeve holes 20. This arrangement can further improve the stability of the rebar sleeve 5 and the wire brush 3.

[0048] The steel reinforcement sleeve 5 includes two side plates 5.1 and an intermediate plate 5.2 disposed between the two side plates 5.1. The intermediate plate 5.2 is capable of displacement between the two ends of the side plates 5.1.

[0049] With this configuration, after the rebar sleeve 5 passes over the foundation rebar, the intermediate plate 5.2 is positioned at the foremost end of its sliding stroke on the side plate 5.1. When the rebar sleeve 5 is next fitted onto the foundation rebar, the intermediate plate 5.2 moves backward on the side plate 5.1, allowing it to wrap around the foundation rebar again, thus improving its stability during rotation around the foundation rebar. Therefore, when cleaning the laitance at the base of the foundation rebar, the limiting effect of the foundation rebar on the rebar sleeve 5 improves the overall stability of the moving frame 1 and enhances the laitance cleaning effect.

[0050] Secondly, if the laitance at the root of the pier reinforcement is not completely cleaned after the wire brush 3 has circled the pier reinforcement once, the wire brush 3 can be continuously moved up and down by controlling the handle to circle the pier reinforcement multiple times, thereby thoroughly cleaning the laitance at the root of the pier reinforcement. During this process, the reinforcement sleeve 5 is always fitted outside the pier reinforcement, which fully ensures the overall stability of the device during laitance cleaning.

[0051] In addition, by displacing the intermediate plate 5.2 on the side plate 5.1, the length of the reinforcing bar sleeve 5 is shortened, so as to ensure that when it rotates around a certain foundation reinforcing bar, it will not be blocked by other foundation reinforcing bars.

[0052] The technical scope of this utility model is not limited to the contents of the above description. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the scope of this utility model.

Claims

1. A device for flushing slurry on the top surface of a foundation, characterized in that, Comprising: A moving frame (1) with a row of rollers (2) arranged at its bottom and two handles provided at its top; A row of wire brushes (3) evenly distributed at equal intervals, arranged at the bottom of the moving frame (1) and in front of the rollers (2), and a motor (4) for driving its self-rotation is connected to the top end of the wire brush (3); Steel bar sleeves (5), one is provided on the side of each wire brush (3), and openings capable of being sleeved onto the bearing platform steel bars forward are provided at both the front and rear ends of the steel bar sleeve (5); after the steel bar sleeve (5) is sleeved onto the bearing platform steel bars, it can rotate 180° around the center of the bearing platform steel bars, and the wire brush (3) can revolve around the bearing platform steel bars for one circle; A first driving structure, one end of which is connected to the steel bar sleeve (5), and the other end is connected to the handle, and can drive the steel bar sleeve (5) to rotate 180° around the center of the bearing platform steel bars when the rear end of the handle rotates upward; A second driving structure, one end of which is connected to the wire brush (3), and the other end is connected to the handle, and can drive the wire brush (3) to revolve around the bearing platform steel bars for one circle when the rear end of the handle rotates upward; High-pressure nozzles (6), one is provided behind each steel bar sleeve (5) and is fixed on the moving frame (1).

2. The slurry flushing device for the top surface of a foundation according to claim 1, characterized in that, The wire brush (3) includes a brush body (3.1) and a long shaft (3.2), the brush body (3.1) is circular and fixed to the bottom end of the long shaft (3.2), and the power shaft of the motor (4) is connected to the top end of the long shaft (3.2).

3. The slurry flushing device for the top surface of a foundation according to claim 2, characterized in that, The first driving structure includes a first driving rod (7), a first driving groove (8) and a first driving body (9), the first driving rod (7) is rotatably installed at the bottom of the moving frame (1), the steel bar sleeve (5) is fixed to the bottom of the first driving body (9), the first driving groove (8) is a spiral groove arranged on the surface of the first driving rod (7), the first driving body (9) is slidably arranged in the first driving groove (8), the first driving body (9) is connected to the front end of the handle, and the handle can control the displacement of the first driving body (9) in the height direction.

4. The slurry flushing device for the top surface of a foundation according to claim 3, characterized in that, The second driving structure includes a second driving rod (10), a second driving groove (11) and a second driving body (12), the second driving rod (10) is rotatably installed below the first driving rod (7), the long shaft (3.2) is connected to the second driving rod (10), the second driving groove (11) is a spiral groove arranged on the surface of the second driving rod (10), the second driving body (12) is slidably arranged in the second driving groove (11), the second driving body (12) is connected to the handle, and the handle can control the displacement of the second driving body (12) in the height direction.

5. The slurry flushing device for the top surface of a foundation according to claim 4, characterized in that, A rotating plate (13) is rotatably sleeved outside the long shaft (3.2), and one end of the rotating plate (13) far from the long shaft (3.2) is fixedly connected to the second driving rod (10).

6. The slurry flushing device for the top surface of a foundation according to claim 4, characterized in that, A "U"-shaped connecting frame (14) with an open end facing downwards is fixedly connected to the steel bar sleeve (5), a rotating rod (15) with its top end fixedly connected to the first driving rod (7) is fixedly installed at the top of the connecting frame (14), and the second driving body (12) is rotatably sleeved outside the rotating rod (15).

7. The slurry flushing device for the top surface of a foundation according to claim 4, characterized in that, The movable frame (1) is provided with lifting frames (16) that correspond one-to-one with the wire brush (3). The lifting frame (16) has an inverted "F" shape. The first drive body (9) and the second drive body (12) are respectively fixed at the two front ends of the lifting frame (16). The top of the lifting frame (16) is connected to two handles through a synchronous plate (17). The handles can control the synchronous plate (17) to move up and down on the movable frame (1). The first drive groove (8) and the second drive groove (11) have the same length, and the pitch of the first drive groove (8) is twice that of the second drive groove (11).

8. The slurry flushing device for the top surface of a foundation according to claim 7, characterized in that, The area before both ends of the handle rotates with the moving frame (1). The front end of the handle is provided with a strip groove (18). The top of the synchronization plate (17) is fixedly provided with a slide rod (19), and the slide rod (19) passes through the strip groove (18).

9. A slurry flushing device for the top surface of a foundation according to claim 7, characterized in that, The lifting frame (16) has sleeve holes (20) at its two front ends respectively fitted outside the first drive rod (7) and the second drive rod (10), and the first drive body (9) and the second drive body (12) are respectively fixedly installed on the inner wall surface of the two sleeve holes (20).

10. A slurry flushing device for the top surface of a foundation according to claim 6, characterized in that, The steel reinforcement sleeve (5) includes two side plates (5.1) and an intermediate plate (5.2) disposed between the two side plates (5.1), the intermediate plate (5.2) being movable between the two ends of the side plates (5.1).

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