Adjustable positioning device for top shear bar of precast T beam

Abstract

The utility model relates to the prefabricated beam construction technical field discloses a prefabricated T beam top face shear bar adjustable positioning device, including cradle, positioning device, reinforcement cage, adopt installing positioning device on the frame of cradle, the positioning rod on positioning device can effectively fixed shear bar height position and horizontal position, reduce the phenomenon that the shear bar is not level, avoid the need for manual fixing shear bar when binding or welding simultaneously, convenient binding or welding operation, only need to place corresponding shear bar on the positioning rod during construction to realize accurate positioning, simple and convenient operation, reduce the professional ability requirement to operating personnel, and improve construction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of precast beam construction technology, specifically to an adjustable positioning device for the top shear reinforcement of a precast T-beam. Background Technology

[0002] The T-beam prefabrication adopts a one-time forming process. The reinforcing bars are uniformly processed into semi-finished products at the reinforcing bar processing plant, transported to the reinforcing bar installation jig, tied, formed, and inspected, and then hoisted to the prefabrication jig. The formwork is installed in one go, and then the concrete is poured to form the final shape. The existing method of installing the shear bars on the top surface of the prefabricated T-beams uses a manual method of positioning them by pulling lines at both ends of the beam to control the elevation and alignment of the shear bars. This requires workers to spend a lot of time measuring and adjusting the position of each shear bar to ensure its accuracy in the horizontal and vertical directions. This method is time-consuming and labor-intensive, affecting construction efficiency. It is also susceptible to human factors and site conditions, which can cause the engineering line to deflect. The actual position of the shear bars positioned by the operators according to the pulling lines may be lower than the design elevation, resulting in an uneven overall alignment of the shear bars, which affects the quality of subsequent concrete pouring and the structural stress performance. Utility Model Content

[0003] The purpose of this utility model is to provide an adjustable positioning device for the shear reinforcement on the top surface of a precast T-beam, so as to solve the problems mentioned in the background art, which are low construction efficiency and poor positioning effect due to the existing method of manually positioning the shear reinforcement by pulling lines at both ends of the beam.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] An adjustable positioning device for shear reinforcement on the top surface of a precast T-beam includes a jig, a positioning device, and a reinforcing cage. The jig includes a frame with side frames on both sides at the top, and raised guide rails on the side frames. The positioning device is located on the side frames and slides along the guide rails. The reinforcing cage includes main reinforcement bars, and several main reinforcement bars are placed on the jig. Several rings of stirrups are arranged around the outer ring of all the main reinforcement bars. Shear reinforcement bars are installed at the junction of the main reinforcement bars and the stirrups. Several positioning rods are provided on the side opposite to the sliding direction of the positioning device, and the positioning rods are used for positioning the shear reinforcement bars.

[0006] Furthermore, the frame body has several jigs in the middle, and the jigs have several grooves, in which the main ribs are placed.

[0007] Furthermore, the positioning device includes a material platform, which spans above the reinforcing cage, and a positioning rod with the same width as the shear reinforcement is provided on the side of the material platform opposite to the sliding direction.

[0008] Furthermore, the spacing between the positioning rods is determined according to the width of the shear reinforcement; the height of the positioning rod is determined according to the height of the shear reinforcement, and the positioning rod is welded and fixed to the material platform.

[0009] Furthermore, the positioning rod is connected to the material platform via an adjustable device. The adjustable device can adjust the spacing between the positioning rods according to the width of the shear reinforcement and adjust the height of the positioning rod according to the height of the shear reinforcement.

[0010] Furthermore, the adjustable device is a slide and slider adjustment device or a gear and rack adjustment device.

[0011] Furthermore, the material platform is provided with several support legs, and the bottom of each support leg is provided with a pulley. The pulley matches the guide rail, and the positioning device slides along the guide rail of the frame via the pulley.

[0012] Furthermore, the pulley is provided with a locking device, which controls the sliding or locking of the pulley on the guide rail.

[0013] Furthermore, the locking device is a knob locking device or a spring pin locking device.

[0014] Furthermore, the positioning device is used for the installation and positioning of shear reinforcement on the top surface of the precast T-beam.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] The system employs a positioning device installed on the frame of the jig. The positioning rod on the device effectively fixes the height and horizontal position of the shear reinforcement, reducing unevenness of the shear reinforcement. It also avoids the need for manual fixing of the shear reinforcement during installation, such as binding or welding, making binding or welding operations easier. During construction, the corresponding shear reinforcement is simply placed on the positioning rod to achieve precise positioning. The operation is simple and convenient, reducing the professional skill requirements for operators and improving construction efficiency. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the tire frame and positioning device of this utility model;

[0018] Figure 2 This is a three-dimensional schematic diagram of the frame, steel cage, and positioning device of this utility model;

[0019] Figure 3 This is a partial schematic diagram of the shear reinforcement installation of the positioning device of this utility model;

[0020] Figure 4 This is a partial schematic diagram of the positioning device and guide rail of this utility model;

[0021] In the diagram: 100-frame, 110-frame body, 120-frame, 121-guide rail, 130-frame plate, 200-positioning device, 210-positioning rod, 220-material platform, 230-support leg, 240-pulley, 250-locking device, 300-reinforcing cage, 310-main reinforcement, 320-stirrup, 330-shear reinforcement. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figure 1-2 As shown, an adjustable positioning device 200 for the top shear reinforcement 330 of a precast T-beam includes a frame 100, a positioning device 200, and a reinforcing cage 300. The frame 100 includes a frame body 110 with side frames 120 on both sides at the top. The side frames 120 have raised guide rails. The positioning device 200 is mounted on the side frames 120 and slides along the guide rails 121. The reinforcing cage 300 includes main reinforcement bars 310. Several main reinforcement bars 310 are placed on the frame plate 130. Several rings of stirrups 320 are arranged around the outer ring of all the main reinforcement bars 310. Shear reinforcement bars 330 are installed at the junction of the main reinforcement bars 310 and the stirrups 320. Several positioning rods 210 are provided on the side opposite to the sliding direction of the positioning device 200. The positioning rods 210 are used for positioning the shear reinforcement bars 330. The positioning rods 210 are round steel bars.

[0024] like Figure 2 As shown, the frame 110 has several jigs 130 in the middle, and several grooves are provided on the jigs 130, in which the main ribs 310 are placed.

[0025] like Figure 2 As shown, the positioning device 200 includes a material platform 220, which spans above the steel cage 300. A positioning rod 210 with the same width as the shear reinforcement 330 is provided on the side opposite to the sliding direction of the material platform 220.

[0026] like Figure 2 As shown, the spacing between the positioning rods 210 is determined according to the width of the shear reinforcement 330. After the height of the positioning rod 210 is determined according to the height of the shear reinforcement 330, it is welded and fixed on the material platform 220. The shear reinforcement 330 can be accurately positioned by being lowered onto the corresponding positioning rod 210.

[0027] In some embodiments, the positioning rod 210 is connected to the material platform 220 via an adjustable device. The adjustable device can adjust the spacing between the positioning rods 210 according to the width of the shear reinforcement 330 and adjust the height of the positioning rod 210 according to the height of the shear reinforcement 330.

[0028] In some embodiments, the adjustable device is a slide and slider adjustment device or a gear and rack adjustment device.

[0029] The sliding groove and slider adjustment device includes a slider and a sliding groove. The slider changes position by sliding within the sliding groove and is fixed by a locking component.

[0030] The gear and rack adjustment device includes a gear and a rack. The rotation of the gear drives the rack to translate and change the spacing, and it is fixed by a locking component.

[0031] like Figure 4 As shown, the material platform 220 is provided with several support legs 230, and the bottom of the support legs 230 is provided with pulleys 240. The pulleys 240 are matched with the guide rail 121, and the positioning device 200 slides along the guide rail of the frame 120 through the pulleys 240.

[0032] like Figure 4 As shown, the pulley 240 is provided with a locking device 250, which controls the sliding or locking of the pulley 240 on the guide rail 121.

[0033] In some embodiments, the locking device 250 is a knob locking device or a spring pin locking device.

[0034] The knob locking device includes a knob, a screw, and a pressure plate. By rotating the knob, the screw is driven to make the pulley 240 fit tightly against the guide rail 121, and the locking is achieved by friction. To release, the knob is rotated in the opposite direction to release the friction.

[0035] The spring-loaded locking device includes a pin, a spring, a reset handle, and an array of positioning holes on the guide rail 121. The pin is inserted into the positioning hole of the guide rail by the spring force to achieve locking. When unlocking, the pin is pulled out manually to overcome the spring force.

[0036] In some embodiments, a cavity is provided above the material platform 220, which can hold the shear reinforcement 330 to be installed, reducing handling time.

[0037] In actual implementation, the positioning device 200 is used for the installation and positioning of the shear reinforcement 330 on the top surface of the precast T-beam.

[0038] During construction, the operator adjusts the spacing and height of the positioning rods 210 according to the designed width and height of the shear reinforcement 330, and then pushes the positioning device 200 to move linearly on the guide rail 121. When the positioning device 200 slides to the predetermined position, the pulley 240 is locked by the locking device 250. At this time, the positioning device 200 is fixed. The operator places the shear reinforcement 330 on the positioning rod 210 on the back side of the material platform 220, so that the shear reinforcement 330 is close to the junction of the main reinforcement 310 and the stirrup 320, and then performs the binding or welding installation procedures. After the shear reinforcement 330 in the same row on the main reinforcement 310 is installed, the operator pushes the positioning device 200 forward again and repeats the above operation until all the shear reinforcement 330 is installed.

[0039] The positioning device 200 of this invention directly limits the vertical and horizontal installation positions of the shear reinforcement 330 by setting the preset height of the adjustable positioning rod 210. The guide rail controls the linear movement of the material platform 220, ensuring consistent spacing between the longitudinally distributed shear reinforcements 330, thus improving the installation efficiency and positioning effect. Using this positioning device 200, operators only need to place the shear reinforcement 330 on the positioning rod 210 to achieve precise positioning, significantly reducing the time and personnel costs required for positioning.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable positioning device for the top shear reinforcement of a precast T-beam, characterized in that: The device includes a frame, a positioning device, and a reinforcing cage. The frame includes a frame body with side frames on both sides and top, and raised guide rails on the side frames. The positioning device is located on the side frames and slides along the guide rails. The reinforcing cage includes main bars, and several main bars are placed on the frame. Several rings of stirrups are provided around the outer ring of all the main bars. Shear bars are installed at the junction of the main bars and the stirrups. Several positioning rods are provided on the side opposite to the sliding direction of the positioning device. The positioning rods are used to position the shear bars.

2. The adjustable positioning device for the top shear reinforcement of the precast T-beam according to claim 1, characterized in that: The positioning device includes a material platform, which spans above the reinforcing cage, and a positioning rod with the same width as the shear reinforcement is provided on the side of the material platform opposite to the sliding direction.

3. The adjustable positioning device for the top shear reinforcement of the precast T-beam according to claim 2, characterized in that: The spacing between the positioning rods is determined according to the width of the shear reinforcement; the height of the positioning rods is determined according to the height of the shear reinforcement, and the positioning rods are welded and fixed to the material platform.

4. The adjustable positioning device for the top shear reinforcement of the precast T-beam according to claim 2, characterized in that: The positioning rods are connected to the material platform via an adjustable device. The adjustable device can adjust the spacing between the positioning rods according to the width of the shear reinforcement and adjust the height of the positioning rods according to the height of the shear reinforcement.

5. The adjustable positioning device for the top shear reinforcement of the precast T-beam according to claim 4, characterized in that: The adjustable device is a slide and slider adjustment device or a gear and rack adjustment device.

6. The adjustable positioning device for the top shear reinforcement of the precast T-beam according to claim 2, characterized in that: The material platform is provided with several support legs, and the bottom of each support leg is provided with a pulley. The pulley matches the guide rail, and the positioning device slides along the guide rail of the frame via the pulley.

7. The adjustable positioning device for the top shear reinforcement of the precast T-beam according to claim 6, characterized in that: The pulley is equipped with a locking device, which controls the sliding or locking of the pulley on the guide rail.

8. The adjustable positioning device for the top shear reinforcement of the precast T-beam according to claim 7, characterized in that: The locking device is a knob locking device or a spring pin locking device.

9. The adjustable positioning device for the top shear reinforcement of the precast T-beam according to claim 1, characterized in that: The frame has several jigs in the middle, and the jigs have several grooves, in which the main ribs are placed.

10. The adjustable positioning device for the top shear reinforcement of the precast T-beam according to any one of claims 1-9, characterized in that: The positioning device is used for the installation and positioning of shear reinforcement on the top surface of the precast T-beam.

Images