Bridge padstone inner support embedded bolt positioning fixture

Abstract

The utility model discloses a bridge padstone inner support embedded bolt positioning fixture which comprises a rectangular frame, an adjustable frame, a positioning screw rod and an embedded steel cylinder, the rectangular frame is fixed on the upper edge portion of a padstone template box body through a bolt, the adjustable frame is installed on the rectangular frame in a sliding mode and fastened through a bolt, and the embedded steel cylinder is fixed on the upper edge portion of the padstone template box body. The adjustable frame is composed of two longitudinal rods and a plurality of transverse rods arranged between the two longitudinal rods, the positioning screws are assembled on the transverse rods and correspond to the upper portion of the embedded steel cylinder, and the upper ends of the positioning screws penetrate through the transverse rods and are fixed to the transverse rods through nuts. And a limiting clamp is fixed at the lower end of the positioning screw rod, and is clamped in the embedded steel cylinder. The positioning device has the advantages that the structure is simple, the positioning device can be quickly installed on a padstone template box body, accurate positioning of the pre-embedded steel cylinder is achieved, and accurate alignment installation of follow-up support installation is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to a positioning fixture for embedded bolts in a support of a bridge cushion stone. Background Art

[0002] The bearing pad stone is the most important connection for transferring loads between bridge components, the main carrier for supporting the bridge deck, and an important component of the bridge. It is located at an important position at the connection point between the upper and lower structures of the bridge, and can adjust the errors and deviations between the piers and the bridge deck caused by construction.

[0003] When installing the support, it is often impossible to install the support due to errors in the position of the embedded bolt holes on the pad stone. Small holes can be drilled, while large holes can be chiseled out and re-cast.

[0004] Based on the above shortcomings in the construction and installation process, technical personnel in this field urgently need a positioning fixture for the embedded bolts in the support of the bridge pad stone. Summary of the invention

[0005] The purpose of the utility model is to provide a positioning fixture for embedded bolts in the support of the bridge saddle stone in accordance with the deficiencies of the above-mentioned prior art. The positioning fixture is configured by fixing a rectangular frame on the top of the saddle stone template box body, and arranging an adjustable frame with an adjustable position inside the rectangular frame, so that the lower part of the positioning screw is clamped to limit the embedded steel cylinder and the upper part is fixedly connected to the adjustable frame to realize the positioning of the embedded steel cylinder.

[0006] The purpose of this utility model is achieved by the following technical solutions:

[0007] A pre-embedded bolt positioning fixture for the inner support of a bridge pedestal, characterized in that the positioning fixture comprises a rectangular frame, an adjustable frame, a positioning screw and an embedded steel cylinder, the rectangular frame is fixed to the upper edge of the pedestal template box by bolts, the adjustable frame can be slidably installed on the rectangular frame and fastened by bolts, the adjustable frame is composed of two longitudinal rods and a plurality of cross rods arranged between the two longitudinal rods, the positioning screw is assembled on the cross rod and corresponds to the top of the embedded steel cylinder, the upper end of the positioning screw passes through the cross rod and is fixed to the cross rod by a nut, and a limit fixture is fixed to the lower end of the positioning screw, and the limit fixture is clamped in the embedded steel cylinder.

[0008] The end of the longitudinal rod on the adjustable frame is provided with a slide groove, and the end of the longitudinal rod is buckled on the rectangular frame through the slide groove, and the slide groove is tightened with bolts to achieve fixation with the rectangular frame.

[0009] The limiting fixture is a rubber plug, the outer diameter of the rubber plug is larger than the inner diameter of the embedded steel cylinder, and there is an interference fit between the rubber plug and the embedded steel cylinder.

[0010] A tray is fixed to the lower end of the positioning screw, and the tray supports the bottom surface of the rubber plug. A clamping plate is also threadedly assembled on the positioning screw, and the clamping plate is arranged on the top surface of the rubber plug.

[0011] The utility model has the advantages of simple structure, rapid installation on the pad stone template box, accurate positioning of the embedded steel cylinder, and accurate alignment installation of the subsequent support. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural schematic diagram of the positioning fixture for embedded bolts in the inner support of the bridge pad stone in the utility model;

[0013] Figure 2 It is a schematic diagram of the connection between the positioning screw and the embedded steel cylinder in the utility model. DETAILED DESCRIPTION

[0014] The features of the present invention and other related features are further described in detail below through embodiments in conjunction with the accompanying drawings to facilitate understanding by technicians in the same industry:

[0015] like Figure 1-2 , the marks in the figure are: rectangular frame 1, adjustable frame 2, longitudinal rod 21, cross rod 22, slide groove 23, positioning screw 3, embedded steel cylinder 4, rubber plug 5, clamping plate 6, tray 7.

[0016] Example: Figure 1 , 2 As shown, this embodiment specifically relates to a positioning fixture for embedded bolts in a bridge pedestal support, and the positioning fixture includes a rectangular frame 1, an adjustable frame 2, a positioning screw 3 and an embedded steel cylinder 4.

[0017] like Figure 1 , 2As shown, the rectangular frame 1 is fixedly installed on the top of the pad stone template box body, corresponding to the installation position of the template around the pad stone. The adjustable frame 2 can be slidably assembled in the rectangular frame 1 and fastened by bolts. The adjustable frame 2 includes two longitudinal rods 21 and a plurality of cross bars 22 arranged between the two longitudinal rods 21. The number of cross bars 22 is determined based on the embedded steel cylinder 4 required to be set. The two ends of the longitudinal rod 21 are respectively fixed with a slide groove 23, through which the position of the adjustable frame 2 on the rectangular frame 1 can be finely adjusted. The slide groove 23 is a groove body with an open lower end, similar to an inverted U-shaped body and buckled on the rectangular frame 1. After the adjustable frame 2 is moved to a predetermined precise position, the slide groove 23 is fixed to the rectangular frame 1 by tightening the bolts on the side wall of the slide groove 23. The cross bar 22 is provided with a plurality of transverse long holes, through which positioning screws 3 are provided. The positioning screws 3 can be finely adjusted in the long holes. The upper end of the positioning screws 3 protrudes from the cross bar 22, and a rubber plug 5 is fixedly provided at the lower end. The rubber plug 5 is connected to the embedded steel cylinder 4 by interference fit.

[0018] like Figure 1 , 2 As shown, in order to control the expansion size of the rubber plug 5, a tray 7 and a clamping plate 6 are arranged at the bottom end of the positioning screw 3. The tray 7 is fixed to the bottom end of the positioning screw 3 and the rubber plug 5 is arranged thereon. The clamping plate 6 is threadedly assembled on the positioning screw 3 and presses the rubber plug 5 underneath. The radius of the clamping plate 6 and the outer diameter of the tray 7 are both large. The diameter expansion size of the rubber plug 5 can be controlled by rotating the clamping plate 6. In other words, the rubber plug 5 under the diameter expansion is clamped and fixed to the embedded steel cylinder 4, so that the positioning of the embedded steel cylinder 4 can be achieved.

[0019] like Figure 1 , 2 As shown, the working method of the positioning fixture in this embodiment includes the following steps: the rectangular frame 1 is installed on the top of the template of the pad stone, and then the two ends of the adjustable frame 2 are buckled on the rectangular frame 1. After buckling, the adjustable frame 2 is slid to the preset position and fixed with bolts. Then, the rubber plug 5 at the bottom of the positioning screw 3 is extended into the embedded steel cylinder 4, and the rubber plug 5 is controlled to expand outwards through the clamping plate 6 to clamp with the embedded steel cylinder 4. The positioning screw 3 is fine-tuned in the long hole on the cross bar 22 to ensure that the embedded steel cylinder 4 is in a precise preset position, and then the nut is screwed into the positioning screw 3 to tighten it to achieve the final positioning. After the positioning of the embedded steel cylinder 4 is completed, concrete slurry is poured into the template of the pad stone to cast the pad stone. After the pad stone is cured, the clamping plate 6 is loosened, the positioning screw 3 is taken out from the embedded steel cylinder 4, and the rectangular frame 1 and the adjustable frame 2 are removed.

[0020] The beneficial effects of this embodiment are: simple structure, quick installation on the pad stone template box, accurate positioning of the embedded steel cylinder, and accurate alignment of the subsequent support installation are ensured.

Claims

1. A positioning fixture for embedded bolts in the inner support of a bridge shim, characterized in that The positioning fixture includes a rectangular frame, an adjustable frame, a positioning screw and an embedded steel cylinder. The rectangular frame is fixed to the upper edge of the pad stone template box by bolts. The adjustable frame can be slidably installed on the rectangular frame and fastened by bolts. The adjustable frame is composed of two longitudinal rods and a plurality of cross rods arranged between the two longitudinal rods. The positioning screw is assembled on the cross rod and corresponds to the top of the embedded steel cylinder. The upper end of the positioning screw passes through the cross rod and is fixed to the cross rod by a nut. A limit fixture is fixed to the lower end of the positioning screw, and the limit fixture is clamped in the embedded steel cylinder.

2. A positioning fixture for embedded bolts in the inner support of a bridge shim according to claim 1, characterized in that The end of the longitudinal rod on the adjustable frame is provided with a slide groove, and the end of the longitudinal rod is buckled on the rectangular frame through the slide groove, and the slide groove is tightened with bolts to achieve fixation with the rectangular frame.

3. A positioning fixture for embedded bolts in the inner support of a bridge shim according to claim 1, characterized in that The limiting fixture is a rubber plug, the outer diameter of the rubber plug is larger than the inner diameter of the embedded steel cylinder, and there is an interference fit between the rubber plug and the embedded steel cylinder.

4. A positioning fixture for embedded bolts in the inner support of a bridge shim according to claim 3, characterized in that A tray is fixed to the lower end of the positioning screw, and the tray supports the bottom surface of the rubber plug. A clamping plate is also threadedly assembled on the positioning screw, and the clamping plate is arranged on the top surface of the rubber plug.

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