Simple deforming joint filling plate removing device

Abstract

This utility model belongs to the field of expansion joint construction tools, specifically relating to a simple expansion joint caulking plate removal device. It includes a cutting blade, a handle, a support, and pulleys. The handle is connected to the cutting blade for holding it, and the cutting blade has a U-shaped cutting line. Two rows of pulleys are installed on the support, with the cutting blade connected to the support below and positioned between the two rows of pulleys. The handle is connected to the support above, and the rolling direction of the two rows of pulleys is parallel to the cutting direction of the cutting blade. This utility model provides a simple expansion joint caulking plate removal device that can meet the removal needs of different expansion joint caulking plates. It can improve construction efficiency, thereby improving the overall construction efficiency of the pipeline network. It will not cause excessive damage to the expansion joint caulking plate, thus reducing polysulfide sealant waste, standardizing the polysulfide sealant filling thickness, improving the polysulfide sealant acceptance rate, and saving economic costs. It is simple to operate, highly safe, and highly flexible.

Description

Technical Field

[0001] This utility model belongs to the field of expansion joint construction tools, specifically relating to a simple expansion joint filler board removal device. Background Technology

[0002] Technical specifications for underground utility tunnels require that expansion joints be installed no more than once every 30 meters in large-volume concrete sections to effectively mitigate the cracking of the main structure caused by uneven settlement. Expansion joints are connected using dowel bars and pre-embedded with low-foaming, high-density closed-cell polyethylene foam boards for buffering. When constructing expansion joints in the interior walls of the utility tunnel, the pre-embedded low-foaming, high-density closed-cell polyethylene foam boards must be removed (30mm thick), and then filled with a two-component polysulfide sealant. The traditional method of removal involves manually cutting two seams and then removing the cut portion, which cannot achieve a uniform thickness and smooth finish. If the removal is too shallow, the sealant will not adhere well, easily detach, and fail to meet waterproofing requirements; if the removal is too thick, it leads to severe overconsumption of sealant material. Utility Model Content

[0003] This invention aims to solve the problem of uniformly removing expansion joint filler and improve the construction quality of polysulfide sealant for expansion joints.

[0004] This utility model provides the following technical solution: a simple expansion joint filler board removal device, including a cutting blade and a handle, the handle being connected to the cutting blade for holding the cutting blade, the cutting blade having a U-shaped cutting line.

[0005] Furthermore, it also includes a bracket and pulleys. The bracket is equipped with two rows of pulleys, the cutting blade is connected to the bracket below, the cutting blade is located between the two rows of pulleys, and the handle is connected to the bracket above. The rolling direction of the two rows of pulleys is parallel to the cutting direction of the cutting blade.

[0006] Furthermore, the cutting blade has a split structure, including a left blade and a right blade; the left blade and the right blade are connected to the support in a staggered manner; both the left blade and the right blade include a lower cutter, a side cutter and a connecting handle, the lower cutters of the left blade and the right blade overlap front and back to form a closed U-shaped cutting line, the connecting handle of the left blade and the right blade is slidably connected to the support and is provided with a locking mechanism, the left blade and the right blade can slide on the support to adjust the width of the U-shaped cutting line.

[0007] Furthermore, the bracket has a first linear groove, and the connecting handles of the left and right blades have a second linear groove. The guide post fixed on the connecting handle passes through the first linear groove and is threaded. The guide post is threaded to a nut. When the nut is tightened, it can clamp the bracket with the connecting handle and fix the position of the left or right blade. The slide plate fixed on the bracket passes through the second linear groove and is connected to the pressure plate. The pressure plate slides against the bottom surface of the connecting handle.

[0008] Furthermore, the support includes a horizontal plate and two vertical plates, with the two vertical plates fixed vertically to both sides of the horizontal plate. The cutting blade and handle are connected to the horizontal plate, and pulleys are mounted on the vertical plates.

[0009] Furthermore, the ends of the lower cutting blades of the left and right blades are beveled.

[0010] Furthermore, stiffening plates connect the horizontal and vertical plates of the support frame.

[0011] Furthermore, the nut has a washer.

[0012] Compared with the prior art, the advantages of this utility model are:

[0013] This utility model provides a simple expansion joint caulking plate removal device, which can meet the removal needs of different expansion joint caulking plates; it can improve construction efficiency, thereby improving the construction efficiency of the entire pipeline network; it will not cause excessive damage to the expansion joint caulking plate, thereby reducing the consumption of polysulfide sealant, standardizing the filling thickness of polysulfide sealant, improving the acceptance rate of polysulfide sealant, and saving economic costs; it is simple to operate, highly safe, and highly flexible. Attached Figure Description

[0014] Figure 1 Three-dimensional device for removing simple expansion joint filler board Figure 1 ;

[0015] Figure 2 Three-dimensional device for removing simple expansion joint filler board Figure 2 ;

[0016] Figure 3 A side view of a simple expansion joint filler removal device;

[0017] Figure 4 Three-dimensional device for removing simple expansion joint filler board Figure 3 .

[0018] In the diagram: 1-Handle; 2-Pulley; 3-Left blade; 4-Right blade; 5-First straight groove; 6-Second straight groove; 7-Guide post; 8-Nut; 9-Slide plate; 10-Pressure plate; 11-Horizontal plate; 12-Vertical plate; 13-Rib plate; a-Lower cutter; b-Side cutter; c-Connecting handle. Detailed Implementation

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] like Figures 1-4 The image shows a simple expansion joint caulking plate removal device, comprising a cutting blade and a handle 1. The handle 1 is connected to the cutting blade for holding the cutting blade, which has a U-shaped cutting line. The U-shaped cutting line design of the cutting blade enables the continuous removal of caulking plate material of a specified thickness in one go, forming a U-shaped groove with consistent depth, clear outline, and flat inner wall; providing an ideal bonding surface for subsequent polysulfide sealant filling.

[0021] It also includes a support frame and pulleys 2. Two rows of pulleys 2 are mounted on the support frame. The cutting blade is connected to the support frame below and positioned between the two rows of pulleys 2. The handle 1 is connected to the support frame above. The rolling direction of the two rows of pulleys 2 is parallel to the cutting direction of the cutting blade. In use, the support frame spans the expansion joint, the two rows of pulleys 2 are located on either side of the expansion joint, and the cutting blade extends into the expansion joint. The pulley system design allows the device to move smoothly and effortlessly on the concrete surface, effectively guiding the cutting direction, ensuring a straight cutting trajectory, and reducing operator fatigue and errors. Furthermore, the support frame and pulley structure ensure the stability of the blade's cutting depth during the cutting process, unaffected by uneven force applied by the operator.

[0022] The cutting blades are of a split structure, consisting of a left blade 3 and a right blade 4. The left and right blades 3 and 4 are connected to the support in a staggered manner. Each blade includes a lower cutting blade a, a side cutting blade b, and a connecting handle c. The lower cutting blades a of the left and right blades 3 and 4 overlap, forming a closed U-shaped cutting line. The connecting handle c of the left and right blades 3 and 4 is slidably connected to the support and equipped with a locking mechanism. The width of the U-shaped cutting line can be adjusted by sliding the blades 3 and 4 on the support. This split blade design, combined with the sliding adjustment and locking mechanism, allows for flexible and stable adjustment of the U-shaped cutting line width according to the actual width of the expansion joint, making it highly adaptable. The overlap of the lower cutting blades a of the left and right blades 3 and 4 prevents undercutting or missed cuts.

[0023] The bracket has a first linear groove 5, and the connecting handle c of the left blade 3 and the right blade 4 has a second linear groove 6. The guide post 7, which is fixed on the connecting handle c, passes through the first linear groove 5 and is threaded. The guide post 7 is threaded to a nut 8, which has a washer to increase the contact range with the bracket. When the nut 8 is tightened, it can cooperate with the connecting handle c to clamp the bracket and fix the position of the left blade 3 or the right blade 4. When the nut 8 is loosened, the left blade 3 or the right blade 4 can slide freely. The slide plate 9, which is fixed on the bracket, passes through the second linear groove 6 and is connected to a pressure plate 10. The pressure plate 10 slides and fits against the bottom surface of the connecting handle c.

[0024] The adjustment and locking mechanism, consisting of a slide groove, a guide post, and a nut, can not only adjust the position of the blade, but also lock it securely by tightening the nut, ensuring that the blade position will not shift during the cutting process and maintaining the set cutting width. The first linear slide groove 5 and the guide post 7 form the first guide structure, and the second linear slide groove 6 and the slide plate 9 form the second guide structure. The combination of the first guide structure and the second guide structure prevents the connecting handle from tilting and getting stuck, ensuring smooth adjustment and stability after locking.

[0025] The support includes a horizontal plate 11 and two vertical plates 12. The two vertical plates 12 are vertically fixed to both sides of the horizontal plate 11. The cutting blade and handle 1 are connected to the horizontal plate 11, and the pulley 2 is installed on the vertical plates 12. A stiffening plate 13 connects the horizontal plate 11 and the vertical plates 12 of the support.

[0026] The ends of the lower cutting blades a of the left blade 3 and the right blade 4 are beveled. The beveled ends of the lower cutting blades a help to cut the filler material more smoothly, reduce resistance, and make the cutting process easier and more efficient.

[0027] When using it, first dig a pit at the beginning of the expansion joint that can accommodate the left blade 3 and the right blade 4. Adjust the distance between the left blade 3 and the right blade 4 to match the width of the expansion joint. Place the left blade 3 and the right blade 4 into the expansion joint and cut the polyethylene foam sealant board along the direction of the expansion joint with force. After cutting, remove the 3cm thick sealant board and fill it with polysulfide sealant.

[0028] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A simple expansion joint sealant removal device, characterized in that: It includes a cutting blade and a handle (1), the handle (1) being connected to the cutting blade for holding the cutting blade, the cutting blade having a U-shaped cutting line; It also includes a bracket and pulleys (2). Two rows of pulleys (2) are installed on the bracket. The cutting blade is connected to the bracket below and is located between the two rows of pulleys (2). The handle (1) is connected to the bracket above. The rolling direction of the two rows of pulleys (2) is parallel to the cutting direction of the cutting blade.

2. The simplified expansion joint filler removal device according to claim 1, characterized in that: The cutting blade is a split structure, including a left blade (3) and a right blade (4); the left blade (3) and the right blade (4) are connected to the bracket in a staggered manner; the left blade (3) and the right blade (4) each include a lower cutter (a), a side cutter (b) and a connecting handle (c), the lower cutters (a) of the left blade (3) and the right blade (4) overlap front and back, forming a closed U-shaped cutting line, the connecting handle (c) of the left blade (3) and the right blade (4) is slidably connected to the bracket and is provided with a locking mechanism, the left blade (3) and the right blade (4) can slide on the bracket to adjust the width of the U-shaped cutting line.

3. The simplified expansion joint filler removal device according to claim 2, characterized in that: The bracket has a first linear groove (5), and the connecting handle (c) of the left blade (3) and the right blade (4) has a second linear groove (6). The guide post (7) fixed on the connecting handle (c) passes through the first linear groove (5) and is threaded. The guide post (7) is threaded to a nut (8). When the nut (8) is tightened, it can cooperate with the connecting handle (c) to clamp the bracket and fix the position of the left blade (3) or the right blade (4). The slide plate (9) fixed on the bracket passes through the second linear groove (6) and is connected to the pressure plate (10). The pressure plate (10) slides against the bottom surface of the connecting handle (c).

4. The simplified expansion joint filler removal device according to claim 3, characterized in that: The bracket includes a horizontal plate (11) and a vertical plate (12). The two vertical plates (12) are fixed vertically on both sides of the horizontal plate (11). The cutting blade and the handle (1) are connected to the horizontal plate (11), and the pulley (2) is installed on the vertical plate (12).

5. A simple expansion joint filler removal device according to claim 2, characterized in that: The ends of the lower cutting blades (a) of the left blade (3) and right blade (4) are beveled.

6. The simplified expansion joint filler removal device according to claim 4, characterized in that: The support has a stiffening plate (13) connecting the horizontal plate (11) and the vertical plate (12).

7. A simple expansion joint filler removal device according to claim 3, characterized in that: The nut (8) has a washer.

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