Fixture for positioning embedded steel bars of segmental beam

Abstract

The utility model discloses a clamp for positioning embedded steel bars of a segmental beam. The clamp comprises at least two layers of connecting frameworks, stand columns and sliding positioning plates, wherein the stand columns are arranged between the two adjacent layers of connecting frameworks and used for supporting the connecting frameworks, and the sliding positioning plates are arranged on the connecting frameworks. A plurality of semicircular holes are formed in one side of each sliding positioning plate, and the distance between the sliding positioning plates on the connecting framework is adjusted through sliding; sliding rails are arranged on the two sides of the connecting framework and are steel bars with L-shaped sections, and long-strip-shaped sliding grooves are formed in transverse plates of the sliding rails in the length direction. And the sliding positioning plate is limited in a sliding chute on the sliding rail through a sliding pin. The problems that the positions of the embedded steel bars of the single segmental beams are not accurate and the distances are not uniform and the positions of the embedded steel bars of different segmental beams are not uniform and the errors of the embedded steel bars are too large to influence the subsequent construction are solved, so that the positions of the embedded steel bars of the single segmental beams are accurate and the distances are uniform; and the uniformity and the accuracy of the positions of the embedded steel bars of different sections can be ensured.

Description

Technical Field

[0001] The embodiments of the utility model belong to the technical field of construction engineering, and more specifically, relate to a clamp for positioning pre-embedded steel bars of segmental beams. Background Art

[0002] In the construction engineering industry, due to construction conditions, transportation conditions and technical limitations, the beams required for bridges cannot be prefabricated as a whole hole and must be prefabricated in segments. The installation and positioning of embedded steel bars are an indispensable part of the segmental beam prefabrication construction process. It is common for workers to perform the positioning and installation during the installation and positioning of embedded steel bars, which results in different embedded steel bar spacings and the inability to guarantee the accuracy of the embedded positions. Especially in the segmental beam prefabrication process, due to the large number of beam segments, the embedded steel bar construction is discontinuous, and the uniformity and accuracy of the embedded steel bar positions between different segments cannot be guaranteed. When the deviation is too large, rework is very likely to occur, wasting resources and increasing construction costs.

[0003] The Chinese patent with publication number CN211499489U discloses a quick positioning device for reserved steel bars of prefabricated segmental beam crash barriers, comprising a connecting plate, wherein both left and right ends of the connecting plate are fixedly connected to connecting blocks, a second plug rod is connected through the outer end of the connecting block, a groove is provided at the inner end of the connecting plate, the outer end of the spring is fixedly connected to a limit block, a track is provided at the inner end of the support plate, the right end of the connecting plate is rotatably connected to a threaded rod, the threaded rod is connected through the inside of a first adjustment rod, and the threaded rod monomers are connected by a belt, a steel bar body is placed inside the groove, the upper end of the support plate is slidably connected to the second adjustment rod, and a connection hole is provided at the upper end of the support plate. This facilitates the fixing of reserved steel bars of crash barriers of different thicknesses.

[0004] However, the Chinese patent, publication number CN211499489U, uses only a single point for positioning. This can lead to varying degrees of steel tilt during actual construction. Different segments, due to varying forces, have different tilt directions, leading to varying degrees of disarray in the steel throughout the segments. This is particularly noticeable when pre-embedding long steel bars, impacting the quality of the pre-embedded steel. Therefore, a fixture for locating pre-embedded steel bars in segmental beams is needed that can ensure both the accurate positioning and uniform spacing of pre-embedded steel bars in a single segmental beam, and the uniformity and accuracy of the positioning of pre-embedded steel bars across different segments. Utility Model Content

[0005] In response to the above defects or improvement needs of the prior art, the utility model provides a clamp for positioning the embedded steel bars of segmental beams, which provides positioning for the steel bars through a plurality of sliding positioning plates with semicircular holes, and adjusts the spacing thereof by sliding on the connecting skeleton. The sliding positioning plates with different spacings can be adjusted according to different construction working conditions, thereby solving the problems of inaccurate position and uneven spacing of the embedded steel bars of a single segmental beam, and the problems of inconsistent position of the embedded steel bars between different segmental beams, and excessive error of the embedded steel bars affecting subsequent construction. It can ensure the accuracy of the position and uniform spacing of the embedded steel bars of a single segmental beam, and the uniformity and accuracy of the position of the embedded steel bars of different segments.

[0006] In order to achieve the above-mentioned purpose, the embodiment of the present invention provides a fixture for positioning pre-embedded steel bars of segmental beams, comprising at least two layers of connecting frames, columns provided between two adjacent layers of connecting frames for supporting them, and sliding positioning plates provided on the connecting frames;

[0007] There are multiple sliding positioning plates, each with multiple semicircular holes on one side, and the spacing between them can be adjusted by sliding on the connecting frame;

[0008] Slide rails are provided on both sides of the connecting frame. The slide rails are L-shaped steel bars with long slide grooves opened along the length direction of the horizontal plate.

[0009] The sliding positioning plate is positioned in the sliding groove on the sliding rail by means of a sliding pin.

[0010] Furthermore, the sliding pins are fixed to both ends of the sliding positioning plate, the diameter of the sliding pins is the same as the width of the sliding groove, and the sliding pins at both ends pass through the sliding grooves on the two side rails respectively;

[0011] The slide grooves on the slide rails on both sides of the connecting frame are straight-through type, without any obstruction in the middle, and the sliding pins slide freely in the slide grooves.

[0012] Furthermore, a thread is provided on the surface of the sliding pin.

[0013] Furthermore, the sliding pin is also provided with a lock for fixing the sliding positioning plate;

[0014] The lock buckle is provided with an internal thread, which cooperates with the thread on the surface of the sliding pin and is sleeved on the sliding pin;

[0015] The front end of the lock buckle presses the transverse plate of the slide rail to fix the sliding positioning plate.

[0016] Furthermore, the uprights are square steel, both ends of which are fixed to two adjacent connecting frames, and are arranged at the four corners of the connecting frames;

[0017] The columns at the four corners of the connecting frame have the same length, so that all the connecting frames are arranged in parallel and connected into a whole.

[0018] Furthermore, the sliding positioning plates at corresponding positions on the connecting frame are fixedly connected via connecting rods.

[0019] Furthermore, a rotating positioning plate is provided on both end surfaces of the sliding positioning plate, and the rotating positioning plate is rotatably connected to the sliding positioning plate through a rotating pin.

[0020] Furthermore, the rotating positioning plates at both ends of the sliding positioning plate are symmetrically arranged. When the rotating positioning plates are rotated to be parallel to the sliding positioning plate, the rotating positioning plates at both ends are arranged opposite to each other, and a gap is left between the ends of the two plates.

[0021] The two ends of the rotating positioning plate are connected by connecting buckles at their respective ends, so that the rotating positioning plates at both ends are connected and fixed.

[0022] Furthermore, a plurality of semicircular holes are also provided on one side of the rotating positioning plate close to the sliding positioning plate;

[0023] The semicircular hole corresponds to the position of the semicircular hole on the sliding positioning plate. When the two are parallel, the edges are parallel. The semicircular holes on them form a circular hole, and the steel bars are placed in the circular hole.

[0024] Furthermore, a plurality of connection holes are provided on the side of the connection frame;

[0025] A plurality of clamps are connected together by bolts through the connection hole.

[0026] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art:

[0027] 1. The utility model is a fixture for positioning the embedded steel bars of segmental beams. A plurality of sliding positioning plates with semicircular holes are used to provide positioning for the steel bars. The spacing between the steel bars is adjusted by sliding on the connecting skeleton. The sliding positioning plates with different spacings can be adjusted according to different construction working conditions. This solves the problems of inaccurate positioning and uneven spacing of the embedded steel bars of a single segmental beam, and the problems of inconsistent positioning of the embedded steel bars between different segmental beams and excessive error of the embedded steel bars affecting subsequent construction. It can ensure the accuracy of the position and uniform spacing of the embedded steel bars of a single segmental beam, and the uniformity and accuracy of the position of the embedded steel bars of different segments.

[0028] 2. The utility model is a fixture for positioning embedded steel bars in segmental beams. The slide grooves on the slide rails connecting the two sides of the skeleton are straight-through, without any obstruction in the middle, so that different numbers of sliding positioning plates can be installed according to actual working conditions, and there is no restriction on their positions, which enhances the versatility of the fixture.

[0029] 3. The utility model is a clamp for positioning pre-embedded steel bars in segmental beams. The clamp controls the tightness of the lock to achieve movement and fixation of the sliding positioning plate, so that the clamp can meet the requirements of convenient adjustment of the spacing of the steel bars and fixation during construction, thereby enhancing the operability and compatibility of the clamp.

[0030] 4. The utility model is a fixture for positioning pre-embedded steel bars in segmental beams, which simultaneously positions the steel bars by means of sliding positioning plates on at least two layers of connection frames, thereby avoiding the use of a single sliding positioning plate to provide only one limiting point for the steel bars, which makes it difficult to maintain the vertical direction of the steel bars during the construction process after positioning, thereby affecting the positioning effect.

[0031] 5. The utility model is a clamp for positioning pre-embedded steel bars in segmental beams. The connections between the various components are firm, the installation is simple, the disassembly is convenient, and the storage is easy. The size and spacing of the clamp can be replaced according to different pre-embedded steel bar forms, which not only facilitates construction but also saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a structural schematic diagram of a fixture for positioning pre-embedded steel bars in segmental beams according to an embodiment of the utility model;

[0033] Figure 2 This is a top view of the structure of a fixture for positioning pre-embedded steel bars in segmental beams according to an embodiment of the utility model;

[0034] Figure 3 This is a structural side view of a fixture for positioning pre-embedded steel bars in segmental beams according to an embodiment of the utility model;

[0035] Figure 4 This is a schematic diagram of the structural connection of a sliding positioning plate of a fixture for positioning pre-embedded steel bars in a segmental beam according to an embodiment of the present utility model;

[0036] Figure 5 This is a schematic structural connection diagram of a lock buckle of a fixture for positioning pre-embedded steel bars in segmental beams according to an embodiment of the present utility model.

[0037] In all the drawings, the same reference numerals represent the same technical features, specifically: 1-connecting frame, 2-column, 3-sliding positioning plate, 4-sliding pin, 5-locking buckle, 6-rotating positioning plate, 7-connecting buckle. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0039] like Figure 1-5 As shown, an embodiment of the present utility model provides a fixture for positioning pre-embedded steel bars in segmental beams, comprising at least two layers of connecting skeletons 1, columns 2 provided between two adjacent layers of connecting skeletons 1 for supporting them, and sliding positioning plates 3 provided on the connecting skeletons 1. There are multiple sliding positioning plates 3, one side of which is provided with multiple semicircular holes for positioning steel bars. The spacing between the plates is adjusted by sliding on the connecting skeleton 1, so as to adjust the sliding positioning plates 3 with different spacings according to different construction working conditions. This solves the problems of inaccurate position and uneven spacing of pre-embedded steel bars in single-piece segmental beams, and the problems of inconsistent position of pre-embedded steel bars between different segmental beams and excessive error of pre-embedded steel bars affecting subsequent construction. It can ensure the accuracy of the position and uniform spacing of the pre-embedded steel bars in single-piece segmental beams, and the uniformity and accuracy of the position of the pre-embedded steel bars in different segments.

[0040] The connecting skeleton 1 includes sliding rails on both sides and connecting columns for connecting the sliding rails on both sides. The sliding rail is a steel bar with an L-shaped cross-section. The steel bar is set upside down, and its cross plates are set facing each other, and a long slide groove is opened on the upper length direction of the cross plate. Sliding pins 4 are fixed to both ends of the sliding positioning plate 3. The sliding pins 4 slide in the slide groove to drive the sliding positioning plate 3 to move only in the direction perpendicular to the slide groove. The diameter of the sliding pin 4 is the same as the width of the slide groove, and a thread is provided on its surface. The slide grooves on the sliding rails on both sides of the connecting skeleton 1 are straight-through types, without any obstruction in the middle, so that different numbers of sliding positioning plates 3 can be installed according to actual working conditions, and there is no restriction on their position, which enhances the versatility of the fixture.

[0041] The sliding pin 4 is also provided with a lock buckle 5, and the lock buckle 5 is provided with an internal thread, which cooperates with the thread on the surface of the sliding pin 4 through the internal thread and is sleeved on the sliding pin 4. After the position adjustment of the sliding positioning plate 3 is completed, the lock buckle 5 is rotated so that its front end is pressed against the cross plate of the slide rail to fix the sliding positioning plate 3 so that it will not be offset when positioning the steel bars. The main body of the lock buckle 5 is a cylindrical structure with transparent ends, and its internal thread runs through both ends of the cylinder. The rear end of the lock buckle 5 is also provided with handles on both sides, and the lock buckle 5 is rotated by the handles. By controlling the tightness of the lock buckle 5 to achieve the movement and fixation of the sliding positioning plate 3, the fixture can meet the requirements for convenient adjustment of the spacing of the steel bars and fixation during construction, thereby enhancing the operability and compatibility of the fixture.

[0042] The sliding positioning plates 3 at corresponding positions on the connecting frame 1 are fixedly connected by connecting rods, so that the sliding positioning plates 3 in the same vertical plane can be ensured to move synchronously during movement, thereby preventing the sliding positioning plates 3 in the vertical plane from having inconsistent displacements during the movement process, and ensuring that when the steel bars are positioned, the steel bars are in a state of being vertical to the bottom surface of the segment beam, thereby effectively preventing the steel bars from being skewed.

[0043] The columns 2 are made of square steel, each secured to two adjacent connecting frames 1 at each end. They are also located at the four corners of the connecting frames 1, connecting the frames 1 as a whole. The steel bars are positioned simultaneously using at least two layers of sliding positioning plates 3 on the connecting frames 1, avoiding the use of a single sliding positioning plate 3 that provides only one limiting point for the steel bars, which would make it difficult to maintain the vertical orientation of the steel bars during construction after positioning, thus affecting the positioning effect.

[0044] The surfaces of both ends of the sliding positioning plate 3 are further provided with rotating positioning plates 6, which are rotatably connected to the sliding positioning plate 3 via rotating pins. The rotating positioning plates 6 at both ends of the sliding positioning plate 3 are symmetrically arranged. When they are rotated to be parallel to the sliding positioning plate 3, the rotating positioning plates 6 at both ends are arranged opposite to each other, and there is a gap between the ends. The rotating positioning plate 6 is also provided with a plurality of semicircular holes on the side close to the sliding positioning plate 3. The semicircular holes correspond to the positions of the semicircular holes on the sliding positioning plate 3. When the two are parallel, the edges are parallel, and the semicircular holes thereon form a circular hole, in which the steel bars are placed. The rotating positioning plate 6 cooperates with the sliding positioning plate 3 to clamp the steel bars in the circular hole to prevent the steel bars from falling over during construction, which would cause the positioning of the steel bars to fail.

[0045] The two ends of the rotating positioning plate 6 are connected by connecting buckles 7 near each other, so that the rotating positioning plates 6 at both ends are connected and fixed. When the steel bar is prevented from being placed in the semicircular hole of the sliding positioning plate 3, the rotating positioning plate 6 is rotated to cooperate with the sliding positioning plate 3 to complete the positioning, and then the rotating positioning plates 6 at both ends are connected by connecting buckles 7 to fix them. This prevents the rotating positioning plates 6 from rotating due to the tipping of the steel bar during construction, thereby losing the position limit of the steel bar, and improving the stability of the fixture during positioning.

[0046] The sliding positioning plate 3 is replaceable and can be configured with semicircular holes of different radii and / or different semicircular hole spacings. Different combinations of configurations can be selected according to the construction conditions, and the rotating positioning plate 6 is matched with it. When replacing, it is only necessary to remove the lock 5, replace the sliding positioning plate 3 of different specifications, and then tighten the lock 5 to secure it.

[0047] During segmental beam construction, multiple segments may be constructed simultaneously. This requires simultaneous positioning of the reinforcement bars on different segments, necessitating the simultaneous use of multiple fixtures. To address this situation, multiple connection holes are provided on the side of the connecting frame 1, through which different fixtures are connected and fixed with bolts.

[0048] The various components of this clamp are firmly connected, simple to install, easy to disassemble, and easy to store. The size and spacing of the clamp can also be replaced according to different pre-buried steel bar forms, which not only facilitates construction but also saves costs.

[0049] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements 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 fixture for positioning embedded steel bars in segmental beams, characterized in that: It comprises at least two layers of connecting frames (1), columns (2) provided between two adjacent layers of connecting frames (1) for supporting them, and a sliding positioning plate (3) provided on the connecting frames (1); There are multiple sliding positioning plates (3), one side of which is provided with multiple semicircular holes, and the spacing between the holes can be adjusted by sliding on the connecting frame (1); Slide rails are provided on both sides of the connecting frame (1), and the slide rails are steel bars with L-shaped cross sections, and long slide grooves are provided on the transverse plates along the length direction; The sliding positioning plate (3) is limited in the sliding groove on the slide rail by a sliding pin (4).

2. A fixture for positioning embedded steel bars in segmental beams according to claim 1, characterized in that: The sliding pins (4) are fixed to both ends of the sliding positioning plate (3), the diameter of the sliding pins (4) is the same as the width of the sliding groove, and the sliding pins (4) at both ends pass through the sliding grooves on the two side slide rails respectively; The slide grooves on the slide rails on both sides of the connecting frame (1) are straight-through type, without any obstruction in the middle, and the sliding pin (4) slides freely in the slide grooves.

3. A fixture for positioning embedded steel bars in segmental beams according to claim 2, characterized in that: The surface of the sliding pin (4) is provided with a thread.

4. A fixture for positioning embedded steel bars in segmental beams according to claim 3, characterized in that: The sliding pin (4) is also provided with a lock buckle (5) for fixing the sliding positioning plate (3); The lock buckle (5) is provided with an internal thread, and is sleeved on the sliding pin (4) through the internal thread cooperating with the thread on the surface of the sliding pin (4); The front end of the lock buckle (5) presses the transverse plate of the slide rail to achieve the fixation of the sliding positioning plate (3).

5. A fixture for positioning embedded steel bars in segmental beams according to any one of claims 1 to 4, characterized in that: The upright column (2) is a square steel, and its two ends are respectively fixed to two adjacent connecting frames (1), and it is arranged at the four corners of the connecting frames (1); The upright posts (2) at the four corners of the connecting frame (1) have the same length, so that all the connecting frames (1) are arranged in parallel and connected into a whole.

6. A fixture for positioning pre-embedded steel bars in segmental beams according to claim 5, characterized in that: The sliding positioning plates (3) at corresponding positions on the connecting frame (1) are fixedly connected via connecting rods.

7. A fixture for positioning embedded steel bars in segmental beams according to any one of claims 1 to 4, characterized in that: Rotating positioning plates (6) are also provided on both end surfaces of the sliding positioning plate (3), and the rotating positioning plates (6) are rotatably connected to the sliding positioning plate (3) via rotating pins.

8. A fixture for positioning pre-embedded steel bars in segmental beams according to claim 7, characterized in that: The rotating positioning plates (6) at both ends of the sliding positioning plate (3) are symmetrically arranged. When the rotating positioning plates (6) are rotated to be parallel to the sliding positioning plate (3), the rotating positioning plates (6) at both ends are arranged opposite to each other, and a gap is left between the ends of the two plates. The two ends of the rotating positioning plate (6) are connected by connecting buckles (7) at their respective locations, so that the rotating positioning plates (6) at both ends are connected and fixed.

9. A fixture for positioning pre-embedded steel bars in segmental beams according to claim 8, characterized in that: The rotating positioning plate (6) is also provided with a plurality of semicircular holes on one side close to the sliding positioning plate (3); The semicircular hole corresponds to the position of the semicircular hole on the sliding positioning plate (3). When the two are parallel, their edges are parallel. The semicircular holes on them form a circular hole, and the steel bars are placed in the circular hole.

10. A fixture for positioning embedded steel bars in segmental beams according to any one of claims 1 to 4, characterized in that: The side surface of the connecting frame (1) is provided with a plurality of connecting holes; A plurality of clamps are connected together by bolts through the connection hole.

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