Positioning frame of positioning device for upper-layer transverse steel bars of box girder bottom plate

Abstract

The utility model discloses a positioning frame of a positioning device for a box girder bottom plate upper layer transverse reinforcing steel bar, which comprises two fixing clamps, a connecting rod, a pushing rod, a connecting pipe and a screw rod, the connecting pipe is fixedly connected at one end of a positioning beam, the upper ends of the two fixing clamps are symmetrically hinged at U-shaped notches at two sides of the lower end of the connecting pipe, and the groove parts of the two fixing clamps are oppositely arranged; the upper ends of the two fixing clamps are provided with two pushing arms which are integrated with the two fixing clamps and extend in a bent mode, the upper ends of the two pushing arms are hinged to one ends of two connecting rods respectively, the other ends of the two connecting rods are symmetrically hinged to the two ends of a horizontal pushing rod, and the pushing rod horizontally and movably penetrates through a vertical strip-shaped through hole formed in the connecting pipe. The lower end of the screw is rotationally connected to the middle of the pushing rod and arranged in the connecting pipe, and the upper end of the screw is spirally connected to the adjusting nut which is fixedly connected to the upper end of the connecting pipe. The positioning reference steel bar can be rapidly fixed, positioning is reliable, operation is convenient, and the clamping device can adapt to clamping of steel bars with different diameters.

Description

Technical Field

[0001] This utility model belongs to the technical field of positioning equipment for the upper transverse reinforcement of the bottom slab of a box girder, and relates to a positioning frame for a positioning device for the upper transverse reinforcement of the bottom slab of a box girder. Background Technology

[0002] As a crucial component supporting high-speed railways, the box girder requires the fabrication of a reinforcing cage before its pouring. This cage is made by binding different types of reinforcing bars. The bottom slab of the box girder's reinforcing cage consists of two layers of reinforcing bars. During the binding process, the lower layer of reinforcing bars is positioned within the positioning slots of the box girder's reinforcing bar binding jig. However, the longitudinal positioning of the upper layer of transverse reinforcing bars on the bottom slab is usually achieved by measuring with calipers and then manually moving them to the designated position for binding. This method is time-consuming and labor-intensive. Even with a positioning device, it is difficult to achieve rapid benchmark positioning. Utility Model Content

[0003] The technical problem to be solved by this utility model is: to provide a positioning frame for a positioning device for the upper transverse reinforcement of the bottom slab of a box girder, which can realize the rapid positioning of the positioning reference reinforcement.

[0004] The technical solution adopted by this utility model is as follows: A positioning frame for a positioning device for the upper transverse reinforcement of the bottom slab of a box girder includes a fixing clamp, a connecting rod, a pushing rod, a connecting pipe, and a screw. The connecting pipe is fixedly connected to one end of the positioning beam. The fixing clamp is a side-lying V-shaped structure, and two clamps are used. The upper ends are symmetrically hinged to the U-shaped notches on both sides of the lower end of the connecting pipe, and the grooves of the two fixing clamps are arranged opposite each other to form a positioning reinforcement clamping part. The upper ends of the two fixing clamps are provided with two bent and extended pushing arms that are integral with them. The upper ends of the two pushing arms are respectively hinged to one end of the two connecting rods. The other ends of the two connecting rods are symmetrically hinged to both ends of the horizontal pushing rod. The pushing rod moves horizontally through the vertical strip-shaped through hole provided on the connecting pipe. The lower end of the screw is rotatably connected to the middle of the pushing rod and is built into the connecting pipe. The upper end of the screw is screwed to the adjusting nut, and the adjusting nut is fixedly connected to the upper end of the connecting pipe.

[0005] Furthermore, the aforementioned connecting pipe is fixedly connected to the positioning beam via a threaded portion.

[0006] Furthermore, a step is provided at the bottom of the connection pipe of the aforementioned positioning beam, and a baffle is used to close the horizontal step surface.

[0007] Furthermore, a guide sleeve is fixedly connected to the upper end face of the aforementioned push rod, and the guide sleeve is sleeved on the outside of the connecting tube.

[0008] The beneficial effects of this utility model are as follows: Compared with the prior art, the effects of this utility model are as follows:

[0009] 1) This utility model uses a drive locking mechanism consisting of a push rod, a connecting rod, a connecting pipe and a screw to drive a V-shaped fixing clamp to clamp the positioning reference steel bar, thereby achieving rapid fixing of the positioning reference steel bar. The positioning is reliable, the operation is convenient, and it can adapt to clamping different steel bar diameters. It has a wide range of applications and low cost. Moreover, the push rod moves directionally within the vertical strip-shaped through hole, resulting in good stability.

[0010] 2) The connecting pipe is connected to the positioning beam via a threaded part, which enables height adjustment. The adjustment is convenient and quick, and it can be used in conjunction with the height adjustment function of the studs to adapt to the different height requirements at both ends of the box girder bottom plate.

[0011] 3) The stepped structure can prevent interference between the push rod, connecting rod and positioning beam;

[0012] 4) Setting a guide sleeve can provide better guiding stability and avoid the problem of poor directional movement stability caused by the reduced rigidity of the opening of the connecting pipe. Attached Figure Description

[0013] Figure 1 A schematic diagram of a simple positioning device for the upper transverse reinforcement of the bottom slab of a box girder;

[0014] Figure 2 This is a structural diagram of the positioning clamp installation location;

[0015] Figure 3 This is a schematic diagram of the structure at the mounting point of the positioning frame;

[0016] Figure 4 This is a schematic diagram of the arrangement of transverse reinforcing bars at the ends of the box girder reinforcing bars;

[0017] Figure 5 This is a schematic diagram of the front view structure of the door frame reinforcement. Detailed Implementation

[0018] The utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0019] Example 1: As Figures 1-5As shown, the positioning frame for positioning the upper transverse reinforcement of the box girder bottom slab includes a fixing clamp 301, a connecting rod 302, a pushing rod 303, a connecting pipe 304, and a screw 305. The connecting pipe 304 is fixedly connected to one end of the positioning beam 1. The fixing clamp 301 has a side-lying V-shaped structure, with two clamps. The upper ends are symmetrically hinged to the U-shaped notches 306 on both sides of the lower end of the connecting pipe 304, and the grooves of the two fixing clamps 301 are arranged opposite each other to form a positioning reinforcement clamping part. The upper ends of the two fixing clamps 301 are provided with two bent and extended pushing arms 307 integrally with them. The upper ends of the two pushing arms 307 are respectively hinged to one end of the two connecting rods 302. The other ends of the two connecting rods 302 are symmetrically hinged to both ends of the horizontal pushing rod 303. The pushing rod 303 moves horizontally through the vertical strip-shaped through hole 308 provided on the connecting pipe 304. The lower end of the screw 305 is rotatably connected to the middle of the pushing rod 303 and is built into the connecting pipe 304. The upper end of rod 305 is screwed to adjusting nut 309, which is fixedly connected to the upper end of connecting pipe 304. The V-shaped fixing clamp, composed of push rod, connecting rod, connecting pipe and screw, drives the fixed positioning reference steel bar to achieve reference fixation. The positioning is reliable, easy to operate, and can adapt to different steel bar diameters. It has a wide range of applications and low cost. Moreover, the push rod moves directionally within the vertical strip through hole, which has good stability. The connecting pipe 304 is fixedly connected to the positioning beam 1 by the threaded part and locked by locking nut 310. A step 311 is set at the bottom of the connection between the positioning beam 1 and the connecting pipe 304, and a baffle 312 is used to close the horizontal step surface. A guide sleeve 313 is fixedly connected to the upper end of push rod 303. The guide sleeve 313 is sleeved on the outside of connecting pipe 304, which can play a better guiding stability and avoid the problem of poor directional movement stability caused by the reduced rigidity of the opening of the connecting pipe.

[0020] Example 2: Figures 1-5 As shown, a positioning device for the upper transverse reinforcement of the bottom slab of a box girder includes a strip-shaped positioning beam 1, positioning clamps 2, and positioning frame 3. The positioning frame 3 is fixedly connected to one end of the positioning beam 1. The positioning frame 3 is used to detachably fix the positioning reference reinforcement 4. Multiple positioning clamps 2 are movably connected to the positioning beam 1 and fastened with fasteners 5. The positioning beam 1 adopts a square tube structure of aluminum profile. The fasteners 5 adopt a set screw. The top of the set screw is provided with a butterfly part to facilitate the rotation of the statically fixed screw to fix the positioning clamps on the positioning beam and fix the positioning frame to the positioning reference reinforcement 4. Multiple positioning clamps face multiple reinforcements 6 to be positioned and keep them in close contact with them to realize the positioning of the transverse reinforcements to be positioned (the longitudinal reinforcement of the bottom slab in the length direction of the box girder is continuous and arranged in the width direction, which is convenient for positioning, while the transverse reinforcement is arranged in the longitudinal spacing, which is difficult to accurately position). After positioning, the transverse reinforcements are tied.

[0021] One end of the positioning beam is fixed to the positioning reference steel bar on the bottom plate of the box girder (at the initial position, the gate head steel bar is selected as the upper layer steel bar bent on the bottom plate, and then the last positioned transverse steel bar after each positioning is selected as the positioning reference steel bar). Multiple positioning clamps are installed and fixed to the positioning beam at set intervals. The longitudinal positioning of the transverse steel bar (the transverse steel bar to be positioned) is limited according to the positioning clamps. After the positioning is limited, the transverse steel bar is tied. This can quickly realize the positioning of the transverse steel bar, greatly improve the efficiency of transverse steel bar tying and the positioning accuracy of the transverse steel bar after tying. The positioning clamps are movably sleeved on the positioning beam and fixed with fasteners. The position can be adjusted according to the needs of the steel bar tying position. It has a wide range of applications, greatly reduces equipment costs, and the equipment is simple to operate and easy to adjust.

[0022] Specifically, the positioning clamp 2 includes a movable sleeve 201 and an inverted V-shaped groove 202. The movable sleeve 201 adopts a square sleeve structure and is movably fitted onto the square-section positioning beam 1 and fastened with fasteners 5. The upper end of the V-shaped groove 202 is fixedly connected to the middle of the bottom side of the movable sleeve 201, and the width of the groove 202 is arranged along the length of the positioning beam 1. The structure of the V-shaped groove and the square movable sleeve makes it easy to fit and operate. It is precise in positioning with the square positioning beam. The V-shaped structure can adapt to the positioning of different steel bar diameters. In order to quickly install the positioning clamp, the positioning beam 1 is provided with scale lines 101. The scale lines enable the positioning clamp to be positioned quickly, improving adjustment efficiency and positioning accuracy.

[0023] Specifically, the upper end of the V-shaped groove 202 is provided with a threaded post 203. The threaded post 203 is spirally connected to the center of the bottom of the movable sleeve 201 and locked with a nut 204. The use of a threaded post connection facilitates manufacturing and installation, and the use of a nut for locking can prevent the V-shaped groove from becoming skewed due to stress after the stud connection, thereby improving the reliability of the stud connection.

[0024] Specifically, a through hole 103 is provided on the top middle side of the positioning beam 1, and a level 102 is installed in the through hole 103. The top surface of the level 102 is not higher than the top of the positioning beam 1. The installation of the level facilitates the binding of the reinforcing bars after the positioning beam is positioned horizontally, thus making the positioning accuracy of the reinforcing bars higher.

[0025] Specifically, the positioning frame 3 includes a fixing clamp 301, a connecting rod 302, a pushing rod 303, a connecting pipe 304, and a screw 305. The connecting pipe 304 is fixedly connected to one end of the positioning beam 1. The fixing clamp 301 has a side-lying V-shaped structure, and two clamps are used. The upper ends are symmetrically hinged to the U-shaped notches 306 on both sides of the lower end of the connecting pipe 304, and the grooves of the two fixing clamps 301 are arranged opposite each other to form a positioning steel bar clamping part. The upper ends of the two fixing clamps 301 are provided with two bent and extended pushing arms 307 integrally with them. The upper ends of the two pushing arms 307 are respectively hinged to one end of the two connecting rods 302. The other ends of the two connecting rods 302 are symmetrically hinged to both ends of the horizontal pushing rod 303. The pushing rod 303 moves horizontally through the vertical strip-shaped through hole 308 provided on the connecting pipe 304. The lower end of the screw 305 is rotatably connected to the middle of the pushing rod 303 and built into the connecting pipe 304. The upper end of the screw 305 is spirally connected. The adjusting nut 309 is fixedly connected to the upper end of the connecting pipe 304. The V-shaped fixing clamp, composed of a push rod, connecting rod, connecting pipe and screw, drives the V-shaped fixing clamp to fix the positioning reference steel bar, so as to achieve the reference fixation. The positioning is reliable, easy to operate, and can adapt to different steel bar diameters. It has a wide range of applications and low cost. Moreover, the push rod moves directionally in the vertical strip through hole, so the stability is good. The connecting pipe 304 is fixedly connected to the positioning beam 1 by the thread and locked by the locking nut 310. The bottom of the positioning beam 1 where it connects to the connecting pipe 304 is provided with a step 311 and the horizontal step surface is closed by a baffle 312. The upper end face of the push rod 303 is fixedly connected to the guide sleeve 313. The guide sleeve 313 is sleeved on the outside of the connecting pipe 304, which can play a better guiding stability and avoid the problem of poor directional movement stability caused by the reduced rigidity of the opening of the connecting pipe.

[0026] Because of the bending of the reinforcing bars, there will be a certain elastic force, which can easily cause the positioning clamp to be stressed, resulting in the positioning clamp not being able to precisely fit the reinforcing bar to be positioned. To address this issue, an annular binding rubber band 7 is provided at the end of the positioning beam 1 away from the positioning frame 3. After the annular binding rubber band 7 elastically binds the longitudinal reinforcing bar, it is hooked onto the hook 8. The hook 8 is fixedly connected to the end of the positioning beam 1 located near the annular binding rubber band 7. By using the annular binding rubber band to bind the reinforcing bar, it can be ensured that the positioning clamp only fits onto the reinforcing bar to be positioned, improving the positioning accuracy. There is no need to manually press down on the positioning beam, which improves the efficiency of binding the reinforcing bar and the binding positioning accuracy.

[0027] Example 3: The operation method of a positioning device for the upper transverse reinforcement of the bottom slab of a box girder includes the following steps:

[0028] Step 1: Adjust the spacing of the positioning clamps on the positioning beam according to the longitudinal spacing of the transverse reinforcing bars to be positioned as designed;

[0029] Step 2: Use two simple positioning devices for the upper transverse reinforcement of the bottom plate of the box girder to be placed near the middle of the longitudinal reinforcement of the box girder. Adjust the height of the positioning frame and fix the two positioning frames to the top reinforcement of the bottom plate of the box girder for the first time. Then, insert the positioning clamp into the reinforcement to be positioned.

[0030] Step 3: After positioning, use a ring-shaped binding rubber band to bind the end of the positioning beam to the longitudinal reinforcement, so that the positioning beam remains horizontal and the positioning clamp is locked on each transverse reinforcement to be positioned, thus completing the positioning of the transverse reinforcement to be positioned.

[0031] Step 4: Tie the positioned transverse steel bars. After tying, loosen the ring binding rubber band and remove the positioning frame.

[0032] Step 5: Using the last horizontal rebar positioned in Step 4 as the positioning reference rebar, repeat the operations of Steps 1-4 to complete the next round of horizontal rebar binding.

[0033] Step 6: Repeat the operation in Step 5 until all the horizontal reinforcement bars are positioned and tied.

[0034] The starting position of the positioning device is the portal head bar of the lower layer of steel reinforcement at the end of the bottom plate. With the positioning clamp, the transverse steel reinforcement can be accurately positioned in the bottom plate, which improves the binding efficiency, binding accuracy and binding quality, and saves time and effort in positioning.

[0035] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A positioning frame for a positioning device for the top layer of transverse reinforcement of a box girder floor, characterized in that, It includes fixed clamp (301), connecting rod (302), push rod (303), connecting pipe (304) and screw rod (305), connecting pipe (304) is fixedly connected at one end of positioning beam (1), fixed clamp (301) is side-lying V-shaped structure, adopts two, upper end is symmetrically hinged at the both sides of U-shaped gap (306) of lower end of connecting pipe (304) and the slot of two fixed clamps (301) is opposite arrangement and forms the reinforcing steel clamping part, the upper end of two fixed clamps (301) is provided with two push arms (307) of bending extension and is integral with it, the upper end of two push arms (307) is respectively hinged to one end of two connecting rods (302), the other end of two connecting rods (302) is symmetrically hinged at the both ends of horizontal push rod (303), push rod (303) passes through the vertical strip-shaped through hole (308) on the connecting pipe (304) and is horizontally movable, screw rod (305) lower end is rotatably connected in the middle of push rod (303) and is built into the connecting pipe (304), screw rod (305) upper end is screw connected to adjusting nut (309), adjusting nut (309) is fixedly connected on the upper end of connecting pipe (304).

2. The positioning frame for the positioning device of the transverse steel bars on the upper layer of the bottom plate of a box girder according to claim 1, characterized in that, Connecting pipe (304) is fixedly connected with positioning beam (1) by screw thread part.

3. The positioning frame for the positioning device of the transverse steel bars on the top layer of the bottom plate of a box girder according to claim 1, characterized in that, The bottom of the connecting pipe (304) is provided with a step (311) at the connecting position of the connecting pipe (304) and the positioning beam (1), and a baffle (312) is used to close the water platform step surface.

4. The positioning frame for the positioning device of the transverse steel bars on the top deck of a box girder according to claim 1, characterized in that, The upper end of the push rod (303) is fixedly connected with a guide sleeve (313), and the guide sleeve (313) is sleeved on the outside of the connecting pipe (304).

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