Positioning fixture for drilling waterproof plate

Abstract

The utility model discloses a positioning fixture for drilling a waterproof plate, which relates to the field of railway tunnel drainage systems and particularly comprises a positioning ring, clamping frames arranged on two sides of the positioning ring and a limiting pen tube connected with the positioning ring in a sliding manner. One end, far away from the positioning ring, of the clamping frame is inserted into the construction joint; the limiting pen tube comprises a limiting pen tube body, a connecting rod fixedly connected with the limiting pen tube body and an inverted-T-shaped sliding block fixedly connected to the bottom end of the connecting rod, and the limiting pen tube body is obliquely arranged. According to the utility model, the limiting pen tube is in sliding connection with the positioning ring, the marking pen is arranged in the limiting pen tube, and the marking pen can only rotate along the outline of the positioning ring, so that the marking pen can accurately mark the edge outline of the through hole, and the through hole formed according to the marked edge outline of the through hole is tightly attached to the bent pipe.

Description

Technical Field

[0001] The utility model relates to the field of railway tunnel drainage systems, in particular to a positioning fixture for opening holes in waterproof plates. Background Art

[0002] Tunnel waterproofing and drainage are crucial factors in ensuring tunnel safety, quality, and normal operation. Waterproofing panels and drainage blind pipes used in secondary tunnel lining construction are crucial components of tunnel waterproofing and drainage, respectively. Bends pass through holes in the waterproofing panels to connect to the drainage blind pipes. The waterproofing panels primarily prevent liquid leakage and gas volatilization. This is especially true in water-rich tunnels, where both waterproofing and drainage are combined. This increases the density and number of drainage blind pipes, leading to a high number of bends passing through the waterproofing panels.

[0003] The existing method of opening holes in the waterproof board first relies on the design drawings to locate the position of the holes, and then relies on the construction workers to manually use a marker to draw circles to determine the circumference of the holes that are compatible with the elbows. However, manual circles with a marker are often inaccurate and the arch of the waterproof board is easily ignored, resulting in the outer wall of the elbow not being able to fit perfectly with the holes in the waterproof board. As a result, the waterproof board at the installation of the drainage blind pipe is not sealed tightly, which leads to water leakage in the lining concrete. The freeze-thaw cycle causes quality problems such as the structure, strength, and durability of the tunnel secondary lining concrete. Utility Model Content

[0004] The utility model provides a positioning fixture for opening holes in waterproof boards, so as to solve the problem that the method of manually circling to locate the edge contour of the through hole is inaccurate and the curvature of the waterproof board is easily ignored, so that the through hole of the waterproof board cannot fit tightly with the outer wall of the elbow, thereby causing leakage of the waterproof board.

[0005] The utility model is a positioning fixture for opening a hole in a waterproof board, which adopts the following technical solution: the device comprises: a positioning ring, a clamping frame arranged on both sides of the positioning ring, and a limit pen tube slidably connected to the positioning ring;

[0006] The surface where the positioning ring is located is arched, and the end of the bracket away from the positioning ring is inserted into the construction joint; the limit pen tube includes a limit pen tube body, a connecting rod fixedly connected to the limit pen tube body, and an inverted T-shaped slider fixedly connected to the bottom end of the connecting rod, and the limit pen tube body is arranged at an angle.

[0007] Preferably, the bracket includes a connecting plate and a clamping plate, one end of the clamping plate is fixedly connected to the connecting plate, and the other end of the clamping plate is inserted into the construction joint.

[0008] Preferably, an annular chute coaxially arranged with the locating ring is provided on the locating ring, and the cross section of the annular chute is in an inverted T shape; the inverted T-shaped slider is embedded in the annular chute and slidably connected to the annular chute.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] 1. In the present invention, the surface where the positioning ring is located is in an arch shape, which fits exactly with the arched surface of the waterproof board, and the bracket inserted into the construction joint can fix the position of the positioning ring, ensuring the accuracy of the subsequent positioning of the edge contour of the through hole.

[0011] 2. In the present invention, the limiting pen tube is slidably connected to the positioning ring, and a marking pen is installed in the limiting pen tube. The marking pen is limited by the annular groove on the positioning ring to ensure that the marking pen can accurately mark the edge contour of the through hole. The through hole opened according to the edge contour of the through hole marked by the marking pen fits tightly with the outer wall of the bent pipe to prevent leakage at the connection between the waterproof board and the bent pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 This is a schematic diagram of the main structure of the present utility model.

[0014] Figure 2 for Figure 1 Cross-sectional view along AA.

[0015] Figure 3 This is a cross-sectional view of the position-limiting pen tube of the present utility model.

[0016] Figure 4 It is a top view of the card holder of the present utility model.

[0017] Description of Reference Numerals

[0018] 1. Positioning ring; 2. Clamping frame; 3. Limit pen tube; 11. Annular slide; 21. Connecting plate; 22. Clamping plate; 31. Connecting rod; 32 Limit pen tube body; 33. Inverted T-shaped slider. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] An embodiment of a positioning fixture for opening a hole in a waterproof board according to the present invention is as follows: Figures 1 to 4 As shown, the device comprises: a positioning ring 1, a clamping frame 2 provided on both sides of the positioning ring, and a limiting pen tube 3 slidably connected to the positioning ring 1;

[0021] The surface where the positioning ring 1 is located is arched, and the end of the bracket 2 away from the positioning ring 1 is inserted into the construction joint; the limiting pen tube 3 includes a limiting pen tube body 32, a connecting rod 31 fixedly connected to the limiting pen tube body 32, and an inverted T-shaped slider 33 fixedly connected to the bottom end of the connecting rod 31, and the limiting pen tube body 32 is arranged at an angle.

[0022] In this embodiment, it should be noted that the positioning ring 1 is used to mark the edge contour of the through hole on the arch-shaped waterproof board, so as to facilitate the construction personnel to accurately open the through hole on the waterproof board. The through hole is used to pass the elbow. In order to ensure that the elbow can pass through the through hole tightly, the inner circle contour of the positioning ring 1 should be consistent with the outer wall of the elbow.

[0023] In this embodiment, it should be noted that the multiple waterproof panels are spliced ​​in sequence along the horizontal direction, the arches of the multiple waterproof panels extend along the horizontal direction, and construction joints exist on both sides of a single waterproof panel.

[0024] In this embodiment, it should be noted that there are construction joints on the left and right sides of the bend pipe installation area on the waterproof board. Therefore, one end of the bracket 2 can be inserted into the construction joint to fix the positioning ring 1. The positioning ring 1 is close to the waterproof board. Then, when relying on the positioning ring 1 to draw a circle to mark the edge of the through hole, the positioning ring 1 will not move, and the edge contour of the through hole can be accurately marked.

[0025] In this embodiment, it should be noted that a construction marker is inserted into the limiting pen tube body 32, which can limit the inclination of the marker. When the tip of the marker contacts the waterproof board and rotates along the positioning ring 1 through the limiting pen tube 3, it is ensured that the tip of the marker is always in contact with the bottom end of the inner wall of the positioning ring 1, thereby accurately marking the edge contour of the through hole.

[0026] In this embodiment, the bracket 2 includes a connecting plate 21 and a clamping plate 22 . One end of the clamping plate 22 is fixedly connected to the connecting plate 21 , and the other end of the clamping plate 22 is inserted into the construction joint.

[0027] In this embodiment, it should be noted that the connecting plate 21 extends along the dome direction of the surface where the positioning ring 1 is located.

[0028] In this embodiment, an annular groove 11 is provided on the positioning ring 1 and is coaxially arranged with the positioning ring 1 . The cross section of the annular groove 11 is inverted T-shaped. The inverted T-shaped slider 33 is embedded in the annular groove 11 and is slidably connected to the annular groove 11 .

[0029] When this embodiment is actually used, it is necessary to open a through hole on the arched waterproof board surface for passing the elbow. First, the position of the through hole is located according to the design drawing, that is, the position of the positioning ring 1 is determined, and then the card plate 22 on the bracket 2 is inserted into the construction joint on both sides of the waterproof board to fix the position of the positioning ring 1. Next, the marker is installed in the limiting pen tube body 32. The construction personnel hold the upper part of the marker and apply force. The marker drives the limiting pen tube 3 through the inverted T-shaped slider 33 and rotates one circle along the annular slide groove 11 on the positioning ring 1. The edge contour of the through hole marked by the marker is completely consistent with the bottom end contour of the inner wall of the positioning ring 1, which ensures that the through hole opened according to the marked through hole edge contour can fit tightly with the outer wall of the elbow.

[0030] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A positioning fixture for opening a hole in a waterproof board, characterized in that: It comprises a positioning ring (1), a clamping frame (2) arranged on both sides of the positioning ring, and a position limiting pen tube (3) slidably connected to the positioning ring (1); The surface where the positioning ring (1) is located is in an arch shape, and the end of the bracket (2) away from the positioning ring (1) is inserted into the construction joint; the limiting pen tube (3) comprises a limiting pen tube body (32), a connecting rod (31) fixedly connected to the limiting pen tube body (32), and an inverted T-shaped slider (33) fixedly connected to the bottom end of the connecting rod (31); the limiting pen tube body (32) is arranged in an inclined manner.

2. A positioning fixture for opening a hole in a waterproof board according to claim 1, characterized in that: The bracket (2) comprises a connecting plate (21) and a clamping plate (22), one end of the clamping plate (22) is fixedly connected to the connecting plate (21), and the other end of the clamping plate (22) is inserted into the construction joint.

3. A positioning fixture for opening a hole in a waterproof board according to claim 1, characterized in that: The positioning ring (1) is provided with an annular slide groove (11) coaxially arranged with the positioning ring (1), and the cross section of the annular slide groove (11) is in an inverted T shape; the inverted T-shaped slider (33) is embedded in the annular slide groove (11) and is slidably connected to the annular slide groove (11).

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