Tunnel longitudinal steel plate water-stop belt embedded concrete trowelling device

Abstract

The utility model discloses a pre-embedded concrete trowelling device for a longitudinal steel plate water-stop belt of a tunnel, trowelling sliding plates are arranged side by side left and right, the front end and the rear end of each trowelling sliding plate are bent upwards, so that the front end and the rear end of each trowelling sliding plate tilt upwards, and the two trowelling sliding plates are connected through a height limiting frame. The height limiting frame is used for limiting the exposed height of the water stop belt, a limiting groove allowing the exposed part of the water stop belt to be clamped therein is formed in the bottom side of the middle of the height limiting frame, the distance between the bottom face of the trowelling sliding plate and the groove bottom of the limiting groove is half of the breadth of the water stop belt, and a handle is arranged at the top of the height limiting frame. The height of the exposed part of the embedded steel plate waterstop can be accurately controlled, it is guaranteed that the waterstop is centered, and the waterproof quality of a construction joint is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of construction tools, in particular to a tunnel longitudinal steel plate water stop pre-embedded concrete trowel device. Background Art

[0002] The embedded waterstop is a waterstop product mainly used to install inside concrete such as concrete deformation joints and expansion joints. It plays a role in tightening and sealing to effectively prevent water leakage and seepage of building components, and plays a role in shock absorption and buffering, which can ensure the service life of engineering buildings. For tunnels that adopt the construction sequence of arch first and wall later, it is necessary to install a grooved steel plate waterstop in the longitudinal construction joint of the short side wall to play a waterproof role. The pre-embedded waterstop is required to be set in the center, that is, buried in the concrete 1 / 2 height and exposed 1 / 2 height of the concrete. According to the relevant acceptance standards for tunnel construction, the radial position of the waterstop installation is allowed to deviate by ±20mm, and the longitudinal position is allowed to deviate from the center by ±30mm. If the buried deviation of the waterstop is too large, it will easily cause water leakage in the construction joint.

[0003] The common method of applying a waterstop is to first fix the waterstop at a set height through a fixing device, then pour concrete and bury the bottom of the waterstop in the concrete. For example, CN108868835A discloses a method for installing and reinforcing a steel-side waterstop buried in a low side wall of a tunnel. However, this type of construction method can only ensure that the waterstop meets the set height when it is pre-installed, and when pouring concrete later, it is still necessary to control the pouring depth to ensure the height of the exposed waterstop. Therefore, there is an urgent need for an auxiliary tool that can ensure the height of the exposed part of the waterstop. Utility Model Content

[0004] The utility model aims to solve the technical problems existing in the prior art, and particularly innovatively proposes a tunnel longitudinal steel plate waterstop embedded concrete leveling device, which can accurately control the height of the exposed part of the embedded steel plate waterstop, ensure that the waterstop is centered, and ensure the waterproof quality of the construction joint.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a tunnel longitudinal steel plate waterstop pre-embedded concrete smoothing device, including smoothing plates arranged side by side on the left and right, the front and rear ends of the smoothing plates are bent upward in an arc shape, so that the front and rear ends of the smoothing plates are upwardly tilted, and the two smoothing plates are connected by a height limiting frame, and the height limiting frame is used to limit the exposed height of the waterstop, and a limiting groove is provided on the bottom side of the middle part of the height limiting frame for the exposed part of the waterstop to be inserted, and the distance between the bottom surface of the smoothing plate and the bottom of the limiting groove is half the width of the waterstop, and a handle is provided on the top of the height limiting frame.

[0006] In the above scheme: the smoothing plate is made of a steel plate waterstop, and its strength, rigidity and bottom surface flatness all meet the construction requirements of concrete compaction and smoothing.

[0007] In the above scheme: the height-limiting frame includes a portal frame arranged at intervals in front and back, the legs on both sides of the portal frame are respectively installed on two smoothing plates, and the legs on both sides and the top crossbeam form a limit groove for limiting the exposed height of the water stop. The portal frame can ensure that the fixed structure of the water stop can pass as much as possible, thereby improving construction efficiency.

[0008] In the above scheme: the legs and crossbeams of the portal frame are made of plain round steel bars. During construction, the bottom of the portal frame crossbeam needs to be placed against the upper edge of the waterstop to ensure that the height of the exposed part of the waterstop meets the construction requirements. Therefore, friction is easily caused during the front and back leveling. Made of plain round steel bars, the friction on the upper edge of the waterstop can be minimized. At the same time, plain round steel bars are a common material on construction sites. Made of plain round steel bars, they are simple and easy to obtain, and can also be welded from cut scraps to save costs. In addition, plain round steel bars can also increase the weight of the leveling device, making it easier to compact the concrete.

[0009] In the above scheme, the handle is extended forward and backward, and the handle is lower in front and higher in the back, and the rear end of the handle extends to the rear of the smoothing board. It is convenient for workers to hold it, and the low front and high rear setting can prevent the workers' hands from touching the water stop. The rear end extends to the rear of the smoothing board, which can increase the smoothing range and improve work efficiency.

[0010] In summary, the beneficial effects of the utility model are as follows: the smoothing plate provided can squeeze and compact the concrete on both sides of the steel plate waterstop of the tunnel low side wall, and play the role of smoothing and finishing the surface; the front and rear ends of the smoothing plate are bent and tilted upward, and when smoothing the front and rear, it can prevent the concrete from flowing to the top of the smoothing plate, making it easier to compact the concrete. The distance between the bottom of the limiting groove of the height limit frame and the bottom surface of the smoothing plate is set to half the width of the waterstop, which can limit the exposed height of the waterstop to 1 / 2 of its width. The exposed height of the waterstop can be detected while smoothing, which saves construction, improves construction accuracy, and ensures the waterproof quality of the construction joint of the tunnel low side wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a stereogram of the utility model.

[0012] Figure 2 It is a state diagram when the utility model is used. DETAILED DESCRIPTION

[0013] The present invention will be further described below by way of embodiments and in conjunction with the accompanying drawings:

[0014] like Figure 1 , 2As shown, a tunnel longitudinal steel plate water stop strip embedded concrete troweling device, a troweling plate 1 is arranged side by side on the left and right. The troweling plate 1 is made of a steel plate water stop strip, and its strength, rigidity, and bottom surface flatness all meet the construction requirements of concrete compaction and troweling. The front and rear ends of the troweling plate 1 are both bent upward in an arc shape, so that the front and rear ends of the troweling plate 1 are tilted upward, which is more convenient when troweling the front and rear ends.

[0015] The two smoothing plates 1 are connected by a height limiting frame 2, which is used to limit the exposed height of the water stop 4. The height limiting frame 2 includes a portal frame arranged at intervals in front and back, and the legs on both sides of the portal frame are respectively installed on the two smoothing plates 1, and the legs on both sides and the top crossbeam form a limit groove 2a for limiting the exposed height of the water stop 4. It is set as a portal frame, which can ensure that the fixed structure of the water stop can pass as much as possible, thereby improving construction efficiency. The distance between the bottom surface of the smoothing plate 1 and the bottom of the portal frame crossbeam is half the width of the water stop 4, and a handle 3 is provided on the top of the height limiting frame 2.

[0016] The legs and crossbeams of the portal frame are made of plain round steel bars. During construction, the bottom of the portal frame crossbeam needs to be pressed against the upper edge of the waterstop 4 to ensure that the height of the exposed part of the waterstop 4 meets the construction requirements. Therefore, friction is easily caused when leveling the front and back. Made of plain round steel bars, the friction on the upper edge of the waterstop 4 can be reduced as much as possible. At the same time, plain round steel bars are a common material on construction sites. Made of plain round steel bars, they are simple and easy to obtain, and can also be welded from cut scraps to save costs. In addition, plain round steel bars can also increase the weight of the leveling device, making it easier to compact the concrete.

[0017] The handle 3 is a steel pipe extending forward and backward, and the handle 3 is set low in the front and high in the back, which is convenient for workers to hold and can prevent workers' hands from touching the water stop 4. Specifically, the front end of the handle 3 is fixedly connected to the rear side of the front door frame, and the bottom side of the middle part of the handle 3 is fixedly connected to the top of the rear door frame. The rear end of the handle 3 extends to the rear of the smoothing plate 1, which can increase the smoothing range and improve work efficiency.

[0018] When in use, the portal frame can be clamped on the water stop 4, and the bottom side of the portal frame cross beam can be pressed against the upper edge of the water stop 4. If the smoothing plate 1 cannot contact the concrete, additional pouring is required. If the bottom of the smoothing plate 1 can contact the concrete, but the bottom side of the portal frame cross beam cannot contact the upper edge of the water stop 4, use the smoothing device to press the concrete down until it can contact its upper edge, and then slide the smoothing plate 1 back and forth longitudinally to squeeze the concrete on both sides of the water stop 4 and compact it, while playing the role of smoothing and finishing.

Claims

1. A tunnel longitudinal steel plate water stop pre-embedded concrete leveling device, characterized in that: It comprises smoothing plates (1) arranged side by side on the left and right, the front and rear ends of the smoothing plates (1) are both bent upward in an arc shape so that the front and rear ends of the smoothing plates (1) are tilted upward, and the two smoothing plates (1) are connected by a height limiting frame (2), and the height limiting frame (2) is used to limit the exposed height of the water stop (4). A limiting groove (2a) for the exposed part of the water stop (4) to be inserted is provided on the bottom side of the middle part of the height limiting frame (2), and the distance between the bottom surface of the smoothing plates (1) and the bottom of the limiting groove (2a) is half the width of the water stop (4). A handle (3) is provided on the top of the height limiting frame (2).

2. A tunnel longitudinal steel plate water stop pre-embedded concrete leveling device according to claim 1, characterized in that: The smoothing plate (1) is made of a steel plate water stop.

3. A tunnel longitudinal steel plate water stop pre-embedded concrete leveling device according to claim 2, characterized in that: The height limiting frame (2) comprises a portal frame arranged at intervals in front and back, the legs on both sides of the portal frame are respectively installed on two smoothing plates (1), and a limiting groove (2a) for limiting the exposed height of the water stop belt (4) is formed by the legs on both sides and the crossbeam on the top.

4. A tunnel longitudinal steel plate water stop pre-embedded concrete leveling device according to claim 3, characterized in that: The legs and crossbeams of the portal frame are made of plain round steel bars.

5. The tunnel longitudinal steel plate water stop pre-embedded concrete leveling device according to claim 3 is characterized by: The handle (3) is arranged to extend forward and backward, and the handle (3) is arranged to be lower at the front and higher at the back, and the rear end of the handle (3) extends to the rear of the smoothing board (1).

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