Quick positioning fixture for anchor bolt hole of cushion stone

Abstract

The utility model belongs to bridge support cushion stone construction technology field, concretely relates to a kind of cushion stone anchor bolt hole quick positioning fixture;Including cross bar, two clamping fulcrums are arranged on cross bar, cross bar can be fixed by two clamping fulcrums and clamped between cushion stone outer mould, several pipe fittings limiting modules that can linearly slide and can be fixed at target position are hung under cross bar;Pipe fittings limiting module includes lower inside bracing component and upper pipe orifice cover, inside bracing component is used to prop open fixed pipe fittings position in pipe fittings inside, and pipe orifice cover is used to cover the pipe orifice of pipe fittings;A kind of cushion stone anchor bolt hole quick positioning fixture provided by the utility model is clamped between cushion stone outer mould by cross bar, and pipe fittings limiting module that can slide and be fixed is set in the lower of cross bar, realizes the accurate positioning of the multiple point, adjustable of anchor bolt pipe;Meanwhile, the design of pipe orifice cover can be automatically closed pipe orifice in pouring process, prevent concrete slurry flow and cause blockage.

Description

Technical Field

[0001] This utility model belongs to the field of bridge bearing pad stone construction technology, specifically relating to a quick positioning clamp for pad stone anchor bolt holes. Background Technology

[0002] Accurate positioning of anchor bolt holes is crucial during the construction of bridge bearing pad stones, directly affecting the installation precision of the bearings and the stability of the bridge structure. Traditional anchor bolt hole positioning often employs external clamps or formwork to fix the positioning tube between the outer formwork of the pad stone. However, these positioning tools typically clamp or surround the positioning tube from the outside, occupying external space of the formwork, easily interfering with reinforcing bars and formwork, affecting the flowability of the poured concrete, leading to insufficient compaction, and even causing hole displacement.

[0003] Furthermore, the opening of the positioning pipe in existing technologies is usually open, making it prone to grout leakage during concrete pouring, causing pipe blockage and requiring subsequent cleaning and secondary treatment. This increases construction difficulty and affects molding quality and construction efficiency. Therefore, there is an urgent need for a rapid positioning device that can internally support the positioning pipe and effectively seal the opening to solve the aforementioned problems in existing technologies. Utility Model Content

[0004] This invention aims to solve the problems of existing positioning tools that typically clamp or surround the positioning tube from the outside, occupying external space of the template, and the problem that concrete easily flows into the opening of the positioning tube.

[0005] This utility model provides the following technical solution: a quick positioning clamp for anchor bolt holes of a pad stone, including a crossbar with two clamping fulcrums arranged on the crossbar. The crossbar can be clamped and fixed between the outer mold of the pad stone through the two clamping fulcrums. Several pipe fitting limiting modules that can slide linearly and be fixed at the target position are suspended below the crossbar. The pipe fitting limiting module includes an inner support component below and a pipe opening cover plate above. The inner support component is used to open and fix the position of the pipe fitting inside the pipe fitting, and the pipe opening cover plate is used to cover the pipe opening of the pipe fitting.

[0006] Furthermore, the pipe fitting limiting module includes a lifting rod, with a sliding sleeve at the top of the lifting rod slidably connected to a crossbar; a pipe end cover and an inner support assembly are connected to the lifting rod.

[0007] Furthermore, the inner support assembly includes an inner support plate, which is evenly distributed around the hanger rod. The inner support plate is movably connected to the hanger rod through parallel connecting rods. A push-pull assembly is connected between the hanger rod and the connecting rod. The push-pull assembly adjusts the angle between the connecting rod and the hanger rod, thereby changing the distance between the inner support plate and the hanger rod.

[0008] Furthermore, the push-pull assembly includes a push-pull sleeve and a push-pull rod; the push-pull sleeve is movably sleeved on the lifting rod, the push-pull rod is movably connected between the lower end of the push-pull sleeve and the connecting rod, and the pipe end cover is movably sleeved on the push-pull sleeve; the upper end of the push-pull sleeve is connected to an axially fixed and circumferentially free nut, and the nut is helically engaged with the external thread section of the lifting rod.

[0009] Furthermore, the protruding ridge at the top of the push sleeve and the annular groove on the nut can be movably fitted together to form a connection structure that is axially fixed and circumferentially free.

[0010] Furthermore, a first screw is threaded onto the sliding sleeve, and the first screw can fix the position of the sliding sleeve when it is pressed against the crossbar.

[0011] Furthermore, a fixed clamp is provided at one end of the crossbar, a sleeve is slidably sleeved on the crossbar, a movable clamp is provided on the sleeve, and a second screw is threaded onto the sleeve. When the second screw is pressed against the crossbar, it can fix the position of the sleeve.

[0012] Furthermore, the crossbar is a square tube.

[0013] Furthermore, each inner support plate is connected to the hanger via two connecting rods.

[0014] Compared with the prior art, the advantages of this utility model are: This utility model provides a quick positioning clamp for anchor bolt holes in foundation stones. It uses a crossbar to clamp the bolt between the outer mold of the foundation stone, and a sliding and fixed pipe limiting module is set below the crossbar, achieving multi-point, adjustable, and precise positioning of the anchor bolt pipe. The device uses an internal support component to tighten and fix the pipe from within, avoiding the occupation of template space and interference with concrete pouring and vibration caused by traditional external clamps, effectively ensuring the compactness of the concrete and the accuracy of the hole position. Simultaneously, the pipe end cover design automatically closes the pipe opening during pouring, preventing concrete slurry from flowing in and causing blockage, eliminating the need for subsequent cleaning and secondary sealing, significantly improving construction efficiency and molding quality. The overall structure is easy to assemble and disassemble, reusable, and suitable for positioning anchor bolt holes of different sizes and spacings, exhibiting good versatility and economic benefits. Attached Figure Description

[0015] Figure 1 A schematic diagram of a quick positioning clamp for anchor bolt holes in a bearing pad; Figure 2 This is a sectional view of the pipe fitting limiting module; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of a nut; Figure 5 This is a schematic diagram illustrating the use of a quick-positioning clamp for anchor bolt holes in pad stones.

[0016] In the diagram: 1-crossbar; 1.1-fixed clamping plate; 1.2-sleeve; 1.3-moving clamping plate; 1.4-second screw; 2-outer mold of pad stone; 3-pipe fitting limiting module; 3.1-pipe end cover plate; 3.2-hanging rod; 3.3-sliding sleeve; 3.4-inner support plate; 3.5-connecting rod; 3.6-pushing sleeve; 3.6.1-protruding ridge; 3.7-nut; 3.7.1-annular groove; 3.8-first screw; 3.9-push-pull rod; 4-positioning tube. Detailed Implementation

[0017] 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.

[0018] like Figure 1 As shown: A quick positioning clamp for anchor bolt holes of a pad stone includes a horizontal bar 1 with two clamping fulcrums arranged on the horizontal bar 1. The horizontal bar 1 can be clamped and fixed between the outer mold 2 of the pad stone through the two clamping fulcrums. Several pipe fitting limiting modules 3 that can slide linearly and be fixed at the target position are suspended below the horizontal bar 1. The pipe fitting limiting module 3 includes an inner support component below and a pipe opening cover plate 3.1 above. The inner support component is used to open and fix the position of the pipe fitting inside the pipe fitting, and the pipe opening cover plate 3.1 is used to cover the pipe opening of the pipe fitting.

[0019] The pipe fitting limiting module 3 includes a lifting rod 3.2, and a sliding sleeve 3.3 at the top of the lifting rod 3.2 is slidably sleeved with a crossbar 1. A first screw 3.8 is threaded onto the sliding sleeve 3.3. When the first screw 3.8 is pressed against the crossbar 1, it can fix the position of the sliding sleeve 3.3. The pipe end cover plate 3.1 and the inner support assembly are connected to the lifting rod 3.2. The number of pipe fitting limiting modules 3 sleeved on the crossbar 1 can be adjusted according to the number of positioning pipes 4. Multiple pipe fitting limiting modules 3 are slidably sleeved on the crossbar 1 through the top sliding sleeve 3.3, and can move linearly along the crossbar 1, which is convenient for adjusting the position according to the spacing of multiple positioning pipes 4.

[0020] like Figure 2 As shown: The internal support assembly includes three internal support plates 3.4, which are evenly distributed around the hanger 3.2. The internal support plates 3.4 are movably connected to the hanger 3.2 through two parallel connecting rods 3.5. The two connecting rods 3.5 are arranged vertically, with the upper end of the connecting rod 3.5 hinged to the hanger 3.2 and the lower end of the connecting rod 3.5 hinged to the internal support plate 3.4. A push-pull assembly connects the hanger 3.2 and the connecting rod 3.5. The push-pull assembly adjusts the angle between the connecting rod 3.5 and the hanger 3.2, changing the distance between the internal support plate 3.4 and the hanger 3.2.

[0021] The push-pull assembly includes a push-pull sleeve 3.6 and a push-pull rod 3.9. The push-pull sleeve 3.6 is movably sleeved on the hanger rod 3.2 and can slide freely on the hanger rod 3.2. The push-pull rod 3.9 is movably connected between the lower end of the push-pull sleeve 3.6 and the connecting rod 3.5. The upper end of the push-pull rod 3.9 is hinged to the push-pull sleeve 3.6 and the lower end is hinged to the connecting rod 3.5. The pipe end cover plate 3.1 is movably sleeved on the push-pull sleeve 3.6 and can slide freely on the push-pull sleeve 3.6. The upper end of the push-pull sleeve 3.6 is connected to a nut 3.7 that is axially fixed and circumferentially free. The nut 3.7 is screwed into the external thread section of the hanger rod 3.2. The push sleeve 3.6 is restricted from rotating by the push-pull rod 3.9 below. When the nut 3.7 rotates, the nut 3.7 moves on the external thread section of the hanger 3.2, which drives the push sleeve 3.6 to move. The push sleeve 3.6 drives the connecting rod 3.5 to swing through the push-pull rod 3.9.

[0022] like Figure 3 As shown: The protruding ridge 3.6.1 at the top of the push sleeve 3.6 and the annular groove 3.7.1 on the nut 3.7 are movably fitted to form a connection structure that is axially fixed and circumferentially free.

[0023] After fitting the positioning tube 4 onto the outside of the inner support assembly, rotate the nut 3.7. Since the nut 3.7 engages with the external threaded section on the hanger 3.2, and the nut 3.7 forms an axially fixed, circumferentially free connection with the protruding ridge 3.6.1 at the top of the jacking sleeve 3.6 through its annular groove 3.7.1, rotating the nut 3.7 will drive the jacking sleeve 3.6 to move axially along the hanger 3.2. When the jacking sleeve 3.6 moves upward, it pulls the connecting rods 3.5 via the push-pull rod 3.9, causing the inner support plates 3.4, evenly distributed around the hanger 3.2, to expand radially outward simultaneously, ultimately pressing tightly against the inner wall of the positioning tube 4, achieving efficient, centered support and fixation from within the pipe fitting. This internal support method completely avoids the occupation of external space by traditional external clamps on the formwork, eliminates interference with reinforcing bars and formwork, ensures smooth concrete pouring and vibration, and effectively improves the compactness of the concrete and the forming accuracy of the holes. When the concrete of the pad stone sets and the inner support assembly separates from the positioning tube 4, the nut 3.7 is rotated in the opposite direction, and the push sleeve 3.6 moves downward. Through the push-pull rod 3.9, each connecting rod 3.5 is pushed, causing the inner support plate 3.4 to synchronously contract radially inward, and the inner support plate 3.4 disengages from the inner wall of the positioning tube 4.

[0024] The pipe end cover 3.1, which is movably fitted onto the jacking sleeve 3.6, falls naturally under gravity and eventually covers the pipe end of the positioning pipe 4, forming an effective cover. This design can automatically seal the pipe end during concrete pouring, completely preventing cement slurry from flowing into the pipe and causing blockage. It eliminates the need for subsequent tedious cleaning and secondary sealing of the pipe end, significantly improving construction efficiency and quality.

[0025] like Figure 4 As shown: Nut 3.7 is divided into an upper nut body and a lower end cap. The end cap is connected to the nut body by screws. The end cap and the nut body are fastened together to form an annular groove 3.7.1. When nut 3.7 is combined with push sleeve 3.6, nut 3.7 is first disassembled and then fastened from both sides of the protrusion 3.6.1.

[0026] A fixed clamping plate 1.1 is provided at one end of the crossbar 1. A sleeve 1.2 is slidably sleeved on the crossbar 1. A movable clamping plate 1.3 is provided on the sleeve 1.2. A second screw 1.4 is threadedly connected to the sleeve 1.4. When the second screw 1.4 is tightly pressed against the crossbar 1, it can fix the position of the sleeve 1.2.

[0027] The crossbar 1 is a square tube, and the sleeve 1.2 and the sliding sleeve 3.3 are square tubes one size larger than the crossbar 1; the moving clamp 1.3 and the pipe fitting limiting module 3 will not rotate on the crossbar 1.

[0028] like Figure 5 As shown: Configure the number of pipe fitting limiting modules 3 inserted into the crossbar 1 according to the number of positioning tubes 4; adjust the position of each pipe fitting limiting module 3 according to the position of the positioning tubes 4, and then tighten the first screw 3.8 to fix it; the positioning tubes 4 are fitted onto the pipe fitting limiting modules 3 one by one, and the nut 3.7 is rotated to open the inner support assembly and fix it to the positioning tubes 4; the pipe end cover plate 3.1 slides down to cover the pipe end of the positioning tube 4 by gravity; the crossbar 1 is clamped and fixed between the outer mold of the pad stone 2 by the fixed clamping plates 1.1 and the movable clamping plates 1.3 at both ends, and one row of positioning tubes 4 is fixed; repeat the above operation to complete the fixing of other rows of positioning tubes 4. Concrete pouring and vibration of the pad stone are carried out. The pipe end cover plate 3.1 effectively prevents grout from flowing in. After the initial setting of the concrete of the pad stone, rotate the nut 3.7 in the opposite direction to loosen the inner support assembly, loosen the movable clamping plate 1.3, remove the entire clamp from the template, clean it and keep it for later use.

[0029] 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 quick positioning clamp for anchor bolt holes in a bearing pad, characterized in that: It includes a crossbar (1), on which two clamping fulcrums are arranged. The crossbar (1) can be clamped and fixed between the outer mold of the pad stone (2) through the two clamping fulcrums. Several pipe fitting limiting modules (3) that can slide linearly and be fixed at the target position are suspended under the crossbar (1). The pipe fitting limiting module (3) includes an inner support component below and a pipe opening cover plate (3.1) above. The inner support component is used to open and fix the position of the pipe fitting inside the pipe fitting. The pipe opening cover plate (3.1) is used to cover the pipe opening of the pipe fitting.

2. The quick positioning clamp for anchor bolt holes of a pad stone according to claim 1, characterized in that: The pipe fitting limiting module (3) includes a hanger rod (3.2), and a sliding sleeve (3.3) at the top of the hanger rod (3.2) is slidably connected to the crossbar (1); the pipe end cover plate (3.1) and the inner support assembly are connected to the hanger rod (3.2).

3. The quick positioning clamp for anchor bolt holes of a pad stone according to claim 2, characterized in that: The inner support assembly includes an inner support plate (3.4), which is evenly distributed around the hanger rod (3.2). The inner support plate (3.4) is movably connected to the hanger rod (3.2) through a parallel connecting rod (3.5). A push-pull assembly is connected between the hanger rod (3.2) and the connecting rod (3.5). The push-pull assembly adjusts the angle between the connecting rod (3.5) and the hanger rod (3.2) to change the distance between the inner support plate (3.4) and the hanger rod (3.2).

4. The quick positioning clamp for anchor bolt holes of a pad stone according to claim 3, characterized in that: The push-pull assembly includes a push-pull sleeve (3.6) and a push-pull rod (3.9); the push-pull sleeve (3.6) is movably sleeved on the hanger rod (3.2), the push-pull rod (3.9) is movably connected between the lower end of the push-pull sleeve (3.6) and the connecting rod (3.5), and the pipe end cover plate (3.1) is movably sleeved on the push-pull sleeve (3.6); the upper end of the push-pull sleeve (3.6) is connected to an axially fixed and circumferentially free nut (3.7), and the nut (3.7) is helically engaged with the external thread section of the hanger rod (3.2).

5. A quick positioning clamp for anchor bolt holes of a pad stone according to claim 4, characterized in that: The protruding ridge (3.6.1) at the top of the push sleeve (3.6) and the annular groove (3.7.1) on the nut (3.7) are movably fitted to form a connection structure that is axially fixed and circumferentially free.

6. A quick positioning clamp for anchor bolt holes of a pad stone according to claim 2, characterized in that: The sliding sleeve (3.3) is threaded with a first screw (3.8), which can fix the position of the sliding sleeve (3.3) when it is pressed against the crossbar (1).

7. The quick positioning clamp for anchor bolt holes of a pad stone according to claim 1, characterized in that: One end of the crossbar (1) is provided with a fixed clamping plate (1.1), a sleeve (1.2) is slidably sleeved on the crossbar (1), a movable clamping plate (1.3) is provided on the sleeve (1.2), and a second screw (1.4) is threadedly connected to the sleeve (1.2). When the second screw (1.4) is pressed against the crossbar (1), it can fix the position of the sleeve (1.2).

8. A quick positioning clamp for anchor bolt holes in a bearing pad as described in any one of claims 2 to 7, characterized in that: The crossbar (1) is a square tube.

9. A quick positioning clamp for anchor bolt holes of a pad stone according to claim 3, characterized in that: Each of the aforementioned inner support plates (3.4) is connected to the hanger (3.2) via two connecting rods (3.5).

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