Protective device for blind pipe of short side wall

Abstract

The utility model relates to a short side wall blind pipe protection device which comprises a female die, the section outline of the female die is trapezoidal, the area of the opening face of the female die is larger than that of the bottom wall of the female die, a reserved hole is formed in the bottom wall of the female die, the edge of the opening of the female die is bent outwards to form a folded edge, the folded edge is provided with a fixing piece, and the fixing piece is used for fixedly installing the female die to a short side wall formwork. Damage to the drainage blind pipe caused by demolding of the short side wall can be effectively prevented.

Description

Technical Field

[0001] The present application relates to the field of tunnel drainage blind pipes, and in particular to a low side wall blind pipe protection device. Background Art

[0002] Tunnel construction is a common construction method in modern engineering construction. Since tunnel construction is usually carried out underground, water damage in tunnel operation accounts for about 40% of the operating line diseases. Drainage is a top priority in tunnel construction, especially for concealed engineering drainage construction, which is irreversible. Once deviation occurs, the subsequent processing costs are extremely high. For example, the construction of tunnel longitudinal drainage blind pipes has always been a controlling project in tunnel construction.

[0003] In the drainage engineering design, the drainage pipe and surrounding rock drainage pipe (i.e. drainage blind pipe) need to penetrate the secondary lining concrete of the short side wall or invert to reach the side ditch, so as to discharge the pore water in the tunnel surrounding rock into the drainage system in the tunnel. Since the tunnel lining and the ditch cable trough are not constructed at the same time, and the short side wall or invert of the tunnel adopts an integral formwork, the drainage pipe needs to be disconnected at the contour position inside the lining.

[0004] Using the traditional construction mode, the annular and longitudinal drainage blind pipes in the tunnel are exposed by the inverted low side wall template, and a certain exposed length is guaranteed to facilitate the alignment and installation of the drainage pipes. The longitudinal drainage blind pipes also need to be set with a certain water flow slope to make drainage smoother. However, the cut holes on the original low side wall template will damage the drainage blind pipes when the template is horizontally dragged and removed, and the reserved length is outside the concrete surface of the low side wall. Subsequent lining construction will cause secondary damage to the drainage blind pipes. Damage to the blind pipe will affect its drainage effect. If the drainage blind pipe is severely damaged, it will cost a lot to replace the drainage blind pipe, which increases the construction cost and affects the construction period. Utility Model Content

[0005] In order to effectively prevent the demoulding of the short side wall from causing damage to the drainage blind pipe, the present application provides a short side wall blind pipe protection device.

[0006] The present application provides a low side wall blind pipe protection device that adopts the following technical solution:

[0007] A short side wall blind pipe protection device comprises a die, the cross-sectional profile of the die is trapezoidal, the area of ​​the die opening surface is larger than the area of ​​its bottom wall, a reserved hole is provided on the die bottom wall, the opening edge of the die is bent outward to form a folded edge, the folded edge is provided with a fixing part, and the fixing part is used to fix the die to the short side wall template.

[0008] By adopting the above technical solution, holes are cut at corresponding positions on the short side wall template. After the short side wall template is positioned and installed, a die is placed at the position of the cut hole in the short side wall, the folded edge of the die is fitted to the short side wall template, and then the die is fixed to the short side wall template through the fixing piece. The drainage blind pipe is passed through the reserved hole, and the drainage blind pipe extends from the reserved hole not exceeding the concrete surface of the small side wall; after the short side wall concrete is poured and initially solidified, the fixing effect of the fixing piece on the die is first released, the die is taken out along the direction of the drainage blind pipe outlet, and then the short side wall steel mold is removed, and the blind pipe construction is completed. Through the installation and use of the die, the annular and longitudinal drainage blind pipes can be kept exposed at a certain length by the short side wall template, and the short side wall demoulding can be effectively prevented from causing damage to the drainage blind pipe, thereby ensuring the overall positioning and installation quality and appearance quality of the annular and longitudinal drainage blind pipes.

[0009] Optionally, the number of the fixing parts is at least two, and the fixing parts include a fixing seat, a buckling arc rod rotatably connected to the fixing seat, and a pressing rod fixedly connected to the buckling arc rod. The fixing seats of at least two of the fixing parts are used for welding to the short side wall formwork and are respectively and adjacently arranged on different side edges of the die. The rotation directions of the buckling arc rods are both toward the center of the die and the rotation surfaces are both perpendicular to the opening surface of the die. The opening edge of the die is elastic, and the opening edge of the die is in an elastically compressed state when the buckling arc rod is buckled to the die.

[0010] By adopting the above technical scheme, the lower pressure rod is pulled to drive the connecting arc rod to be connected to the opening edge of the die. Since the opening edge of the die is in an elastic compression state when the connecting arc rod is connected to the die, that is, there is a certain pre-tightening force between the opening edge of the die and the connecting arc rod, the connecting arc rod can be stably fastened to the die, so as to realize the fixed installation of the die on the short side wall template; and when the short side wall is demoulded, the lower pressure rod can be pulled in the opposite direction to make the connecting arc rod detach from the die, so as to realize the disassembly of the die relative to the short side wall.

[0011] Optionally, the push-down rod is an L-shaped rod structure, the planes where the push-down rod and the buckled arc rod are located are perpendicular to the opening surface of the die, and the L-shaped opening of the push-down rod faces the central axis of the die.

[0012] By adopting the above technical solution, the push-down rod of the above shape and position can exert better force when pulling the push-down rod to buckle the arc rod to or detach it from the die, thereby improving the convenience of installing or disassembling the die relative to the short side wall template.

[0013] Optionally, an inner groove is formed on the inner wall of the die, and the end of the buckled arc rod is inserted into the inner groove.

[0014] By adopting the above technical solution, the possibility of the buckling arc rod sliding out of the edge of the die opening can be reduced, so that the buckling state of the buckling arc rod on the edge of the die opening is more stable, so that the die can be more stably fixed to the short side wall template.

[0015] Optionally, a chamfer is provided on a side wall of the inner groove close to the opening direction of the die.

[0016] By adopting the above technical solution, when the die is removed from the short side wall formwork, the guide angle makes it easier and more labor-saving to push the lower pressure roller to withdraw the buckled arc rod from the inner groove, further improving the convenience of disassembling the short side wall formwork.

[0017] Optionally, the fixing seat is vertically fixed with two mounting plates, the two mounting plates are perpendicular to the opening edge of the die on the adjacent side, the buckled arc rod is located between the two mounting plates, the buckled arc rod is fixedly connected with a rotating rod, and the rotating rod is simultaneously passed through and rotatably connected to the two mounting plates.

[0018] By adopting the above technical solution, the rod is rotated relative to the two mounting plates so that the buckled arc rod can be stably and smoothly rotated relative to the fixing seat.

[0019] Optionally, both ends of the rotating rod are provided with stabilizing members, and the stabilizing members make the connection between the buckled arc rod and the mounting plate more stable.

[0020] By adopting the above technical solution, due to the certain vibration generated during the concrete pouring and leveling process of the short side wall formwork, the connection between the buckle arc rod and the mounting plate is prone to loosening and deformation, resulting in a poor fixing effect of the buckle arc rod on the die. The stabilizing member makes the connection between the buckle arc rod and the mounting plate more stable, thereby improving the fixing stability of the buckle arc rod on the die.

[0021] Optionally, the stabilizing member includes a stabilizing plate and a rotating ring fixedly connected to the stabilizing plate, the stabilizing plate is vertically fixed to the rotating rod, the two mounting plates are both provided with a rotating groove, the cross-sectional profile of the inner wall of the rotating groove is in the shape of a stepped shaft, the small end of the rotating groove is arranged away from the mounting plate, and the rotating rings of the two stabilizing plates are respectively clamped and rotated in the two rotating grooves.

[0022] By adopting the above technical solution, the rotating ring is clamped and rotated in the rotating groove, so that the rotating rod can rotate relative to the mounting plate, and the connection between the buckled arc rod and the mounting plate is more stable and firm.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. Cut holes at corresponding positions on the short side wall template. After the short side wall template is positioned and installed, place the die at the position of the cut hole on the short side wall. The folded edge of the die fits the short side wall template. Then, the die is fixed to the short side wall template through the fixing parts. The drainage blind pipe passes through the reserved hole. Through the installation and use of the die, the annular and longitudinal drainage blind pipes can be kept exposed at a certain length by the short side wall template, and the demoulding of the short side wall can be effectively prevented from causing damage to the drainage blind pipe, thereby ensuring the overall positioning and installation quality and appearance quality of the annular and longitudinal drainage blind pipes.

[0025] 2. Pull the lower pressure rod to drive the buckle arc rod to buckle to the opening edge of the die. There is a certain pre-tightening force between the opening edge of the die and the buckle arc rod, which can make the buckle arc rod stably buckled to the die, so as to realize the fixed installation of the die to the short side wall template; and when the short side wall is demoulded, the lower pressure rod can be pulled in the opposite direction to make the buckle arc rod detach from the die, so as to realize the disassembly of the die relative to the short side wall;

[0026] 3. The inner groove can reduce the possibility of the buckling arc rod sliding out of the edge of the die opening, so that the buckling state of the buckling arc rod on the edge of the die opening is more stable, and the die is more stably fixed on the short side wall template. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application.

[0028] Figure 2 It is an installation diagram of an embodiment of the present application.

[0029] Figure 3 It is a schematic diagram of the structure of the concave mold in the embodiment of the present application.

[0030] Figure 4 yes Figure 3 Schematic diagram of the enlarged structure of part A.

[0031] Figure 5 It is a schematic cross-sectional structural diagram of a fixing seat, a mounting plate and a stabilizing member in an embodiment of the present application.

[0032] Figure numerals: 1. die; 11. reserved hole; 12. folded edge; 2. fixing piece; 21. fixing seat; 211. mounting plate; 22. buckled arc rod; 221. rotating rod; 23. pressing rod; 3. inner groove; 31. chamfer; 4. stabilizing piece; 41. stabilizing plate; 42. rotating ring; 421. clamping part; 5. rotating groove; 6. low side wall formwork. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-5 This application is described in further detail.

[0034] The present application embodiment discloses a low side wall blind pipe protection device. Figure 1 The low side wall blind pipe protection device comprises a die 1, the cross-sectional profile of the die 1 is trapezoidal, the opening surface area of ​​the die 1 is larger than the bottom wall area of ​​the die 1, a reserved hole 11 is provided on the bottom wall of the die 1, and the outline of the reserved hole 11 is circular. The circumferential opening edge of the die 1 is bent outward to form a folded edge 12, and the folded edge 12 is provided with a fixing piece 2.

[0035] Reference Figure 1 and Figure 2 , the number of the fixing parts 2 is at least two. In the embodiment of the present application, the number of the fixing parts 2 is set to two. The fixing parts 2 include a fixing seat 21, a buckling arc rod 22 and a pressing rod 23. The two fixing seats 21 are used to be welded to the short side wall formwork 6. The two fixing seats 21 are respectively arranged adjacent to the opposite side edges of the die 1. The buckling arc rod 22 is rotatably connected to the fixing seat 21. The rotation directions of the two buckling arc rods 22 are both toward the center of the die 1, and the rotation surfaces of the two buckling arc rods 22 are perpendicular to the opening surface of the die 1. The opening edge of the die 1 is made of elastic material, and the opening edge of the die 1 is elastic. When the buckling arc rod 22 is buckled to the die 1, the opening edge of the die 1 is in an elastic compression state.

[0036] A hole is cut at the corresponding position on the short side wall template 6. After the short side wall template 6 is positioned and installed, the die 1 is placed at the position of the hole cut on the short side wall, and the folded edge 12 of the die 1 fits the short side wall template 6. The lower pressure rod 23 is pulled to drive the buckle arc rod 22 to buckle the opening edge of the die 1. Since the opening edge of the die 1 is in an elastic compression state when the buckle arc rod 22 is buckled to the die 1, that is, there is a certain pre-tightening force between the opening edge of the die 1 and the buckle arc rod 22, the buckle arc rod 22 can be stably buckled on the die 1 to realize the fixed installation of the die 1 on the short side wall template 6; and when the short side wall is demoulded, the lower pressure rod 23 can be pulled in the opposite direction to make the buckle arc rod 22 separate from the die 1 to realize the removal of the die 1 relative to the short side wall.

[0037] After the die 1 is fixedly installed on the short side wall formwork 6, the drainage blind pipe is passed through the reserved hole 11, and the drainage blind pipe extends from the reserved hole 11 not exceeding the concrete surface of the small side wall; after the short side wall concrete is poured and initially solidified, the fixing effect of the fixing part 2 on the die 1 is first released, and the die 1 is taken out along the direction of the drainage blind pipe outlet, and then the short side wall steel formwork is removed, and the blind pipe construction is completed. Through the installation and use of the die 1, the annular and longitudinal drainage blind pipes can be kept exposed at a certain length by the short side wall formwork 6, and the short side wall demoulding can be effectively prevented from causing damage to the drainage blind pipe, ensuring the overall positioning installation quality and appearance quality of the annular and longitudinal drainage blind pipes.

[0038] Reference Figure 1 and Figure 2In order to improve the convenience of installing or removing the die 1 relative to the short side wall template 6, the lower pressure rod 23 is an L-shaped rod structure, one end of the lower pressure rod 23 is fixedly connected to the buckle arc rod 22, the planes where the lower pressure rod 23 and the buckle arc rod 22 are located are perpendicular to the opening surface of the die 1, and the L-shaped opening of the lower pressure rod 23 faces the central axis of the die 1. The lower pressure rod 23 of the above shape and position allows the buckle arc rod 22 to be more effective when buckling or detaching the die 1 by pulling the lower pressure rod 23, thereby improving the convenience of installing or removing the die 1 relative to the short side wall template 6.

[0039] Reference Figure 3 and Figure 4 In order to more stably fix the die 1 on the short side wall template 6, inner grooves 3 are provided on the inner walls of the opposite sides of the die 1, and the opening directions of the two inner grooves 3 are arranged opposite to each other. The ends of the two buckled arc rods 22 are respectively inserted into the two inner grooves 3. The side walls of the two inner grooves 3 close to the opening direction of the die 1 are provided with chamfers 31.

[0040] The end of the buckling arc rod 22 is inserted into the inner groove 3, which can reduce the possibility of the buckling arc rod 22 sliding out of the edge of the opening of the die 1, so that the buckling state of the buckling arc rod 22 on the edge of the opening of the die 1 is more stable, so that the die 1 is more stably fixed to the short side wall template 6. When the die 1 is removed from the short side wall template 6, the guide angle 31 makes it easier and more labor-saving to pull the lower pressure roller to withdraw the buckling arc rod 22 from the inner groove 3, further improving the convenience of disassembling the short side wall template 6.

[0041] Reference Figure 1 and Figure 5 In order to make the buckle arc rod 22 stably rotate and connect to the fixed seat 21, the fixed seat 21 is fixedly connected to two mounting plates 211, and the two mounting plates 211 are perpendicular to the fixed plate and perpendicular to the opening edge of the adjacent side of the die 1. The buckle arc rod 22 is located between the two mounting plates 211, and the end of the buckle arc rod 22 away from the die 1 is fixedly connected to a rotating rod 221, and the rotating rod 221 and the buckle arc rod 22 are perpendicular to each other. The rotating rod 221 is perpendicular to the two mounting plates 211 and is simultaneously penetrated and rotationally connected to the two mounting plates 211. The buckle arc rod 22 is stably and smoothly rotated relative to the fixed seat 21 through the rotating rod 221 relative to the two mounting plates 211.

[0042] Since the low side wall formwork 6 generates a certain amount of vibration during the concrete pouring and leveling process, the connection between the buckle arc rod 22 and the mounting plate 211 is prone to loosening and deformation, resulting in a poor fixing effect of the buckle arc rod 22 on the die 1. In order to improve the fixing stability of the buckle arc rod 22 on the die 1, both ends of the rotating rod 221 are provided with a stabilizing member 4.

[0043] Reference Figure 5 The stabilizing member 4 includes a stabilizing plate 41 and a rotating ring 42. The stabilizing plates 41 of the two stabilizing members 4 are respectively fixedly connected to the two end portions of the rotating rod 221, and the two stabilizing plates 41 are perpendicular to the rotating rod 221. The two stabilizing plates 41 are respectively located on the two sides away from the two mounting plates 211. The side walls on the opposite sides of the two stabilizing plates 41 are fixedly connected with the rotating ring 42. The axis of the rotating ring 42 is perpendicular to the stabilizing plate 41. The opening edge of the rotating ring 42 away from the stabilizing plate 41 is bent outward to form a clamping portion 421. The side walls on the side away from the two mounting plates 211 are each provided with a rotating groove 5. The opening directions of the two rotating grooves 5 are arranged in opposite directions. The cross-sectional profile of the inner wall of the rotating groove 5 is in the shape of a stepped shaft. The small end of the rotating groove 5 is arranged away from the mounting plate 211. The rotating ring 42 is penetrated through the small end of the rotating groove 5. The clamping portion 421 is located and rotates in the rotating groove 5.

[0044] By clamping and rotating the rotating ring 42 in the rotating groove 5, the rotating rod 221 can rotate relative to the mounting plate 211, and the connection between the buckled arc rod 22 and the mounting plate 211 is more stable and firm, thereby improving the fixing stability of the buckled arc rod 22 to the die 1.

[0045] The implementation principle of a low side wall blind pipe protection device in the embodiment of the present application is as follows: a hole is cut at a corresponding position on the low side wall template 6. After the low side wall template 6 is positioned and installed, a die 1 is placed at the position of the hole cut in the low side wall, and the folded edge 12 of the die 1 fits the low side wall template 6. The lower pressing rod 23 is pulled to drive the buckling arc rod 22 to buckle to the opening edge of the die 1, so that the buckling arc rod 22 is stably buckled on the die 1, so as to realize the fixed installation of the die 1 on the low side wall template 6. After the die 1 is fixedly installed on the low side wall template 6, the drainage blind pipe is passed through the reserved hole 11, and the drainage blind pipe extends from the reserved hole 11 not exceeding the concrete surface of the small side wall. Through the installation and use of the die 1, the annular and longitudinal drainage blind pipes can be kept at a certain exposed length by the low side wall template 6, and the low side wall demoulding can be effectively prevented from causing damage to the drainage blind pipe, thereby ensuring the overall positioning and installation quality and appearance quality of the annular and longitudinal drainage blind pipes.

[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A low side wall blind pipe protection device, characterized in that: The die (1) comprises a concave die (1), wherein the cross-sectional profile of the concave die (1) is trapezoidal, the opening surface area of ​​the concave die (1) is larger than the bottom wall area, the bottom wall of the concave die (1) is provided with a reserved hole (11), the opening edge of the concave die (1) is bent outwards to form a folded edge (12), the folded edge (12) is provided with a fixing part (2), and the fixing part (2) is used to fix the concave die (1) to the short side wall template (6).

2. A low side wall blind pipe protection device according to claim 1, characterized in that: The number of the fixing members (2) is at least two, and the fixing members (2) include a fixing seat (21), a buckling arc rod (22) rotatably connected to the fixing seat (21), and a pressing rod (23) fixedly connected to the buckling arc rod (22). The fixing seats (21) of at least two fixing members (2) are used for welding to the short side wall template (6) and are respectively arranged adjacent to different side edges of the die (1). The rotation directions of the buckling arc rods (22) are all toward the center of the die (1) and the rotation surfaces are all perpendicular to the opening surface of the die (1). The opening edge of the die (1) is elastic, and when the buckling arc rods (22) are buckled to the die (1), the opening edge of the die (1) is in an elastically compressed state.

3. A low side wall blind pipe protection device according to claim 2, characterized in that: The pressing rod (23) is an L-shaped rod structure, the planes where the pressing rod (23) and the buckling arc rod (22) are located are perpendicular to the opening surface of the die (1), and the L-shaped opening of the pressing rod (23) faces the central axis of the die (1).

4. A low side wall blind pipe protection device according to claim 2, characterized in that: An inner groove (3) is formed on the inner wall of the concave mold (1), and the end of the buckled arc rod (22) is inserted into the inner groove (3).

5. A low side wall blind pipe protection device according to claim 4, characterized in that: A chamfer (31) is provided on a side wall of the inner groove (3) close to the opening direction of the die (1).

6. A low side wall blind pipe protection device according to claim 2, characterized in that: The fixing seat (21) is vertically fixed with two mounting plates (211), the two mounting plates (211) are both perpendicular to the opening edge of the concave mold (1) on the adjacent side, the buckled arc rod (22) is located between the two mounting plates (211), the buckled arc rod (22) is fixedly connected with a rotating rod (221), and the rotating rod (221) is simultaneously penetrated and rotatably connected to the two mounting plates (211).

7. A low side wall blind pipe protection device according to claim 6, characterized in that: Both ends of the rotating rod (221) are provided with stabilizing members (4), and the stabilizing members (4) make the connection between the buckled arc rod (22) and the mounting plate (211) more stable.

8. A low side wall blind pipe protection device according to claim 7, characterized in that: The stabilizing member (4) comprises a stabilizing plate (41) and a rotating ring (42) fixedly connected to the stabilizing plate (41); the stabilizing plate (41) is vertically fixed to the rotating rod (221); the two mounting plates (211) are each provided with a rotating groove (5); the cross-sectional profile of the inner wall of the rotating groove (5) is in the shape of a stepped shaft; the small end of the rotating groove (5) is arranged away from the mounting plate (211); and the rotating rings (42) of the two stabilizing plates (41) are respectively correspondingly clamped and rotated in the two rotating grooves (5).

Images