T-beam pre-tensioned steel strand feeding device
The steel strand feeding device, which uses an electric hoist for suspension and universal wheels for height adjustment, combined with a guiding and positioning device and a convenient cutting method, solves the problem of time-consuming and labor-intensive operation when threading pre-stretched steel strands through the duct of T-beams. It achieves fast and efficient wire feeding and cutting, adapts to different height scenarios, and reduces equipment costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA RAILWAY NO 5 ENGINEERING GROUP CO LTD
- Filing Date
- 2025-08-14
- Publication Date
- 2026-07-21
AI Technical Summary
In the existing technology, when the pre-stretched steel strands of the T-beam are inserted into the pre-fabricated duct of the corrugated pipe, the height of the support platform needs to be adjusted frequently, which makes the operation time-consuming and laborious, and the cutting equipment is inconvenient to handle, making it difficult to quickly match application scenarios of different heights.
The steel strand feeding device, which uses an electric hoist for suspension, combined with casters and a guide positioning device, enables height adjustment and quick docking. It also facilitates cutting via an articulated connection. Guide tubes and locking rods ensure the guidance and stability of the steel strand, and rubber bands are used to fix the cutting device.
It improves the efficiency of steel strand feeding, reduces equipment costs, enables rapid adaptation to different application scenarios at different heights, ensures the stability of cutting and the safety of steel strands, and avoids equipment damage.
Smart Images
Figure CN224525887U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of T-beam pre-tensioned steel strand feeding equipment, and relates to a feeding device for T-beam pre-tensioned steel strands. Background Technology
[0002] In T-beam prefabrication, it is usually necessary to pre-stretch steel strands into the prefabricated ducts of corrugated pipes and fix them to anchor plates at both ends. The conventional method of using pre-stretching equipment to pre-stretch the steel strands into the prefabricated ducts is to: make a support platform, set up support platforms of different heights for different prefabricated duct heights, and place the T-beam pre-stretched steel strand feeding equipment on the support platform of the corresponding height to feed the steel strands into the corresponding prefabricated holes. This method is time-consuming and labor-intensive, inconvenient for docking, and requires separate storage and cutting equipment for cutting, which is inconvenient for handling. Summary of the Invention
[0003] The technical problem to be solved by this utility model is to provide a wire feeding device for pre-tensioned steel strands in T-beams, which can quickly achieve the corresponding height matching between the steel strands and the precast ducts, greatly improve the wire feeding efficiency, save time and labor, facilitate docking, and can also be matched with different application scenarios of different heights, reduce equipment costs, and make the cutting equipment easy to handle.
[0004] The technical solution adopted by this utility model is as follows: a wire feeding device for pre-tensioned steel strands of T-beams, including a wire feeding device body, the four corners of the wire feeding device body are suspended on the hooks of an electric hoist by chains, the body of the electric hoist is attached to a support frame, the bottom of the support frame is provided with casters, the wire feeding device body has a feed pipe and a discharge port, and a cutting device is provided on one side of the discharge port.
[0005] Furthermore, the aforementioned cutting equipment employs an angle grinder. An angle steel plate is fixedly connected to one side of the angle grinder's cutting blade. The bottom plate and vertical plate of the angle steel plate face the bottom and left side of the angle grinder, respectively. The angle steel plate is hinged to a hinge seat via two symmetrical connecting rods. The hinge seat is fixedly connected to a cantilever plate. One end of the cantilever plate is fixedly connected to the discharge port. A limit seat is provided on the side of the hinge seat away from the discharge port. After the connecting rods abut against the limit seat, they tilt towards the side away from the discharge port. The equipment also includes a rubber band ring. One end of the rubber band ring is fixedly connected to the handle of the angle grinder, and the other end can be hooked onto a hook provided on the cantilever plate.
[0006] Furthermore, the aforementioned discharge port is equipped with a T-beam pre-stretched steel strand feeding guide and positioning device coaxial with it. The T-beam pre-stretched steel strand feeding guide and positioning device includes a guide tube. The upper side of the guide tube near the angle grinder is provided with an opening. After the angle grinder rotates, its cutting blade can cut the pre-stretched steel strand towards the opening. The front end of the guide tube is provided with a guide part, which is a bullet structure formed by opening a V-shaped notch around the guide tube and then closing it. A locking rod is provided on the upper side of the guide tube. One end of the locking rod is bent to form a bend, which can be inserted into the grouting hole on the upper side of the anchor plate. The other end of the locking rod is provided with a threaded part. One end of the threaded part passes through the vertical strip hole provided on the connecting plate and is locked by double nuts clamping the connecting plate. The connecting plate is fixedly connected to the guide tube.
[0007] Furthermore, reinforcing ribs are provided at the bottom and sides of the guide tube along the length of the aforementioned opening section, and the reinforcing ribs extend a distance away from the opening on the guide tube.
[0008] Furthermore, a reinforcing rib is fixedly connected to the bottom of the aforementioned cantilever plate.
[0009] The beneficial effects of this utility model are as follows: Compared with the prior art, the effects of this utility model are as follows:
[0010] (1) This utility model uses an electric hoist to stably suspend the main body of the T-beam pre-tensioned steel strand feeding device. The height of the main body of the T-beam pre-tensioned steel strand feeding device is adjusted so that the discharge port is aligned with the opening height of the precast channel. The device is then moved by casters to feed the steel strand into the precast channel. The T-beam pre-tensioned steel strand feeding device is started to feed the steel strand. When the set length is reached (extending to the other end of the T-beam precast channel), the feeding device stops. The section of steel strand is cut off by a cutting device, and the next steel strand is threaded through. The process continues until one precast channel is completed. After all the steel strands are fed, the main body of the lifting T-beam pre-tensioned steel strand feeding equipment and the moving universal wheels are used to thread the steel strands into the next precast channel. This method can quickly achieve the rapid feeding of the T-beam pre-tensioned steel strands, saving time and effort. The cutting equipment is placed on one side for cutting, which improves cutting efficiency. The height is adjustable, which can quickly achieve the corresponding height matching between the steel strands and the precast channels, greatly improving the feeding efficiency, saving time and effort, and making docking convenient. It can also be matched with different application scenarios of different heights, reducing equipment costs. The cutting equipment is easy to pick up and put away.
[0011] (2) The angle grinder can be quickly picked up and put down with the hinge and the limiting seat. It is convenient to operate and can directly cut the steel strand after rotation. The cutting is fast and stable. The rubber band ring is used to fix the angle grinder when it is not in use, which improves the placement stability of the angle grinder and avoids damage to the steel strand or the cutting blade caused by flipping.
[0012] (3) The T-beam pre-tensioned steel strand feeding guide positioning device is connected to the inner hole of the anchor plate seat set at both ends of the corrugated pipe prefabricated duct. This can greatly improve the guiding performance of the steel strand feeding into the corrugated pipe prefabricated duct, improve the efficiency of feeding the steel strand, and avoid the steel strand scraping and damage to the opening of the anchor plate seat. The guide tube is equipped with a spring head structure with a closing end, which can be quickly connected to the hole of the anchor plate seat. The upper locking rod is used to grab the grouting port on the upper side of the anchor plate seat for stability, ensuring the stability and reliability of the guide positioning device. This ensures that the steel strand is guided and positioned in advance during the process of feeding into the prefabricated duct. The closing structure formed by opening multiple V-shaped notches is used to increase the size of the steel strand. In addition, the structure forms a cantilever under certain conditions, which can also play an elastic buffering role for the steel strand in contact with its inner end, avoiding damage to the steel strand. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of the wire feeding device for the pre-tensioned steel strands of T-beams;
[0014] Figure 2 Schematic diagram of the installation location of the guide and positioning device for the pre-tensioned steel strand of the T-beam;
[0015] Figure 3 A schematic diagram of the installation location for the cutting equipment;
[0016] Figure 4 This is a schematic diagram of the end face structure of the guide section of the guide tube. Detailed Implementation
[0017] The utility model will be further described below with reference to the accompanying drawings and specific embodiments.
[0018] Example 1, as Figure 1-4 As shown, the device for feeding pre-stretched steel strands for T-beams includes a main body 1 for feeding steel strands. The four corners of the main body 1 are suspended from the hooks of an electric hoist 3 by chains 2. The body of the electric hoist 3 is attached to a support frame 4. The bottom of the support frame 4 is equipped with casters 5. The main body 1 has an inlet pipe 101 and an outlet 102. A cutting device 6 is provided on one side of the outlet 102. This invention can quickly achieve the corresponding height matching between the steel strands and the precast channels, greatly improving the feeding efficiency, saving time and effort, facilitating docking, adapting to different application scenarios of different heights, reducing equipment costs, and making the cutting device easy to handle.
[0019] For ease of cutting, the cutting device 6 uses an angle grinder. An angle steel plate 7 is fixedly connected to one side of the angle grinder's cutting blade 601. The bottom plate and vertical plate of the angle steel plate 7 face the bottom and left side of the angle grinder, respectively. The angle steel plate 7 is hinged to a hinge seat 9 via two symmetrical connecting rods 8. The hinge seat 9 is fixedly connected to a cantilever plate 10. One end of the cantilever plate 10 is fixedly connected to the discharge port 102. A limit seat 11 is provided on the side of the hinge seat 9 away from the discharge port 102. After the connecting rods 8 abut against the limit seat 11, they face away from the discharge port. The opening 102 is tilted on one side and also includes a rubber band 12. One end of the rubber band 12 is fixedly connected to the handle 602 of the angle grinder, and the other end can be hooked to the hook 13 set on the cantilever plate 10. The angle grinder can be quickly picked up and put down using a hinged connection with a limit seat. It is easy to operate and can directly cut steel strands after rotation. The cutting is fast and stable. The rubber band is used to fix the angle grinder when it is not in use, which improves the placement stability of the angle grinder and avoids damage to the steel strands or cutting blades caused by flipping.
[0020] To quickly connect the steel strand to the precast corrugated pipe duct of the T-beam, a T-beam pre-tensioned steel strand feeding guide and positioning device 14, coaxial with the discharge port 102, is installed. The T-beam pre-tensioned steel strand feeding guide and positioning device 14 is connected to the inner holes of the anchor seats 16 located at both ends of the precast corrugated pipe duct 15. This significantly improves the guiding performance of the steel strand entering the precast corrugated pipe duct, increases the efficiency of steel strand feeding, and prevents scratching damage between the steel strand and the opening of the anchor seats. Specifically, the T-beam pre-tensioned steel strand feeding... The guiding and positioning device 14 includes a guide tube 1401, the outer end of which extends out of the support frame 4 to avoid interference between the support frame and the T-beam during the process of connecting the guide tube to the anchor plate seat. An opening 1402 is provided on the upper side of the guide tube 1401 near the angle grinder. After the angle grinder rotates, its cutting blade can cut the pre-stretched steel strand 17 towards the opening 1402. A tapered guide part 1403 is provided at the front end of the guide tube 1401. The guide part 1403 is a V-shaped opening around the circumference of the guide tube. The bullet-shaped structure formed by the notch and subsequent convergence has a locking rod 1404 on the upper side of the guide tube 1401. One end of the locking rod 1404 is bent to form a bent portion 1405, which can be inserted into the grouting hole 1601 on the upper side of the anchor plate seat 16. The other end of the locking rod 1404 has a threaded portion. One end of the threaded portion passes through the vertical strip hole 19 on the connecting plate 18 and is then locked by double nuts 20 clamping the connecting plate 18. The connecting plate 18 is fixedly connected to the guide tube 1401. The end-mounted constricting head structure can quickly align with the hole in the anchor plate seat, and the upper locking rod grips the grouting port on the upper side of the anchor plate seat for stability, ensuring the stability and reliability of the guiding and positioning device. This ensures early guiding and positioning during the feeding of the steel strand into the prefabricated duct. The constricting structure formed by multiple V-shaped notches is enlarged, and under certain circumstances, this structure forms a cantilever, which can also provide elastic buffering for the steel strand in contact with its inner end, preventing damage to the steel strand.
[0021] To reinforce the guide tube with the opening, reinforcing ribs 1406 are provided at the bottom and sides of the guide tube 1401 along the length of the opening. The reinforcing ribs 1406 extend a distance away from the guide tube 1401. By reinforcing the ribs, the rigidity and strength of the opening, which is a weak link, can be improved, thereby improving safety and reliability.
[0022] To improve the support rigidity and stability of the cantilever plate, a reinforcing rib plate 21 is fixedly connected to the bottom of the cantilever plate 10. By setting the reinforcing rib plate to be connected to the U-shaped groove (opening) at the discharge port, the support stability of the cantilever plate can be greatly improved.
[0023] 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 wire feeding device for pre-tensioned steel strands in T-beams, characterized in that, The device includes a steel strand feeding device body, with its four corners suspended from the hooks of an electric hoist via chains. The electric hoist body is attached to a support frame, and the bottom of the support frame is equipped with casters. The steel strand feeding device body has an inlet pipe and an outlet, with a cutting device installed on one side of the outlet.
2. The wire feeding device for pre-tensioned steel strands in T-beams according to claim 1, characterized in that, The cutting equipment uses an angle grinder. An angle steel plate is fixedly connected to one side of the angle grinder's cutting blade. The bottom plate and vertical plate of the angle steel plate face the bottom and left side of the angle grinder, respectively. The angle steel plate is hinged to a hinge seat via two symmetrical connecting rods. The hinge seat is fixedly connected to a cantilever plate. One end of the cantilever plate is fixedly connected to the discharge port. A limit seat is provided on the side of the hinge seat away from the discharge port. After the connecting rods abut against the limit seat, they tilt towards the side away from the discharge port. The equipment also includes a rubber band. One end of the rubber band is fixedly connected to the handle of the angle grinder, and the other end can be hooked onto a hook provided on the cantilever plate.
3. The wire feeding device for pre-tensioned steel strands in T-beams according to claim 2, characterized in that, The discharge port is equipped with a T-beam pre-tensioned steel strand feeding guide and positioning device coaxial with it. The T-beam pre-tensioned steel strand feeding guide and positioning device includes a guide tube. The upper side of the guide tube near the angle grinder is provided with an opening. After the angle grinder rotates, its cutting blade can cut the pre-tensioned steel strand towards the opening. The front end of the guide tube is provided with a guide part. The guide part is a bullet structure formed by opening a V-shaped notch around the guide tube and then closing it. A locking rod is provided on the upper side of the guide tube. One end of the locking rod is bent to form a bend. The bend can be inserted into the grouting hole on the upper side of the anchor plate. The other end of the locking rod is provided with a threaded part. One end of the threaded part passes through the vertical strip hole provided on the connecting plate and is locked by double nuts clamping the connecting plate. The connecting plate is fixedly connected to the guide tube.
4. The wire feeding device for pre-tensioned steel strands in T-beams according to claim 3, characterized in that, The bottom and sides of the guide tube at the opening section are equipped with reinforcing ribs along its length, and the reinforcing ribs extend a distance away from the opening on the guide tube.
5. The wire feeding device for pre-tensioned steel strands in T-beams according to claim 1, characterized in that, The bottom of the cantilever plate is fixedly connected with a reinforcing rib.