Rapid blanking structure for whole bundle of prestressed steel strands of continuous beam bridge

Abstract

The utility model discloses a continuous beam bridge whole-bundle prestressed steel strand fast blanking structure which comprises a strand pulling machine, the strand pulling machine is in transmission connection with a steel strand body, the end of the steel strand body is sleeved with a bullet head protection cap, and a continuous beam bridge top plate is fixedly provided with a full-length lining pipe. And a plurality of openings are uniformly formed in the lining pipe. According to the rapid blanking structure for the whole bundle of prestressed steel strands of the continuous beam bridge, the steel strands rapidly penetrate through the lining pipe to be precisely blanked, winding and twisting of the steel strands are avoided, the blanking speed of the prestressed steel strands is greatly increased, the construction cost is reduced, and the steel strands are protected.

Description

Technical Field

[0001] The utility model relates to the technical field of continuous beam bridge construction, in particular to a quick material discharge structure for a whole bundle of prestressed steel strands of a continuous beam bridge. Background Art

[0002] Prestressed steel strand is an important material widely used in the construction of continuous beam bridges, and its role cannot be ignored. Prestressed steel strand plays an important role in the construction of continuous beam bridges. By improving the bearing capacity, seismic performance and stability of the bridge, reducing bridge deformation and deflection, and reducing maintenance costs, prestressed steel strand provides a solid support for the safe and reliable operation of the bridge structure.

[0003] At present, with the advancement of the construction of suspended cast-in-place sections of continuous beam bridges, the length of the longitudinal prestressed steel strands in the beam sections is getting longer and longer. It is difficult to drag the steel strands manually, the material unloading efficiency is poor, the labor cost is high, and the steel strands are easily worn during the manual dragging process. Utility Model Content

[0004] The purpose of the utility model is to provide a rapid unloading structure for a whole bundle of prestressed steel strands of a continuous beam bridge, so as to solve the problem raised by the above-mentioned background technology that it is difficult to manually drag the steel strands as the construction of the continuous beam bridge hanging basket suspended casting section is advanced, which not only has poor unloading efficiency and high labor costs, but also easily causes wear to the steel strands.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rapid unloading structure for a whole bundle of prestressed steel strands of a continuous beam bridge, comprising a strand threading machine, the strand threading machine is transmission-connected to a steel strand body, the end sleeves of the steel strand body are provided with bullet-shaped protective caps, and a full-length lining pipe is fixedly placed on the top plate of the continuous beam bridge, and a plurality of openings are evenly arranged on the lining pipe.

[0006] Preferably, the beam threading machine includes a frame, a rotating shaft, a motor, a gear and a roller, the rotating shaft is evenly arranged inside the frame, the motor is installed on one side outside the frame, and one end of the rotating shaft passes through the other side outside the frame and is fixedly mounted on the roller.

[0007] Preferably, a plurality of groups of clamps are uniformly clamped on the outside of the inner liner pipe, and the clamps are all in an arc-shaped structure.

[0008] Preferably, a cushion block is provided at the bottom of each group of the clamps, and the cushion block is horizontally fixed on the top plate of the continuous beam bridge.

[0009] Preferably, a curved bracket is installed at a position corresponding to the opening on the bottom wall inside the inner liner tube, and a plurality of guide rollers are arranged around the inside of the curved bracket.

[0010] Preferably, a fitting strip is fixed to the bottom of the curved bracket, and a plurality of fitting grooves matching the fitting strip structure are evenly provided on the bottom wall inside the inner liner tube.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the fast unloading structure for the whole bundle of prestressed steel strands of the continuous beam bridge accurately unloads the steel strands by quickly passing the steel strands through the inner lining pipe, avoiding the entanglement and twisting of the steel strands, which not only greatly improves the unloading rate of the prestressed steel strands and reduces the construction cost, but also protects the steel strands. The fast unloading structure for the whole bundle of prestressed steel strands of the continuous beam bridge engages a bullet-shaped protective cap on the outside of the end of the steel strand body, and transmits it to the inner lining pipe arranged on the top plate of the continuous beam bridge by a bundle threading machine. The inner lining pipe can unload the steel strand body more accurately and neatly, and avoids the problem of wear and tear caused by manual dragging of the steel strand body. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of a quick unloading structure for a whole bundle of prestressed steel strands for a continuous beam bridge of the utility model;

[0013] Figure 2 This is a schematic diagram of the external structure of the inner liner pipe of the utility model continuous beam bridge whole bundle prestressed steel strand quick feeding structure;

[0014] Figure 3 This is a schematic diagram of the internal structure of the inner lining pipe of the quick unloading structure of the whole bundle of prestressed steel strands of the continuous beam bridge of the utility model.

[0015] In the figure: 1. Bundle threading machine; 101. Frame; 102. Rotating shaft; 103. Motor; 104. Gear; 105. Roller; 2. Steel strand body; 3. Bullet head protective cap; 4. Lining tube; 5. Opening; 6. Clamp; 7. Spacer; 8. Curved bracket; 9. Guide roller; 10. Fitting strip. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-3The utility model provides a technical solution: a rapid unloading structure for a whole bundle of prestressed steel strands of a continuous beam bridge, comprising a bundle threading machine 1, the bundle threading machine 1 is connected to a steel strand body 2 in transmission, the end sleeve of the steel strand body 2 is provided with a bullet head protective cap 3, the bullet head protective cap 3 is clamped on the outside of the end of the steel strand body 2 and is made of plastic, and a full-length liner 4 is fixedly placed on the top plate of the continuous beam bridge, and a plurality of openings 5 ​​are evenly arranged on the liner 4, and the opening 5 is a rectangular structure. The liner 4 of this structure can be arranged on the top plate of the continuous beam bridge and clamped with the bullet head protective cap 3 on the outside of the end of the steel strand body 2, and the bundle threading machine 1 is used to drive the steel strand body 2 to quickly pass through the liner 4, so as to realize the unloading of a certain length of the steel strand body 2, and ensure the unloading of the steel strand body 2 Precision and speed, at the same time, the staff can use the hook to pull the steel strand body 2 out of the inner liner pipe 4 from the opening 5 and put it aside, bundle it neatly to avoid the steel strand body 2 from being entangled and twisted, which not only greatly improves the feeding rate of the prestressed steel strand body 2 and reduces the construction cost, but also protects the steel strand body 2 to prevent it from being easily worn during the process of manual dragging of the steel strand body 2. The bundle threading machine 1 includes a frame 101, a rotating shaft 102, a motor 103, a gear 104 and a roller 105. The rotating shaft 102 is evenly arranged inside the frame 101, and both ends of the rotating shaft 102 are connected to the inner walls of the two sides of the frame 101 through bearings. The motor 103 is fixed to one side of the outside of the frame 101 by bolts. The output end of 103 is connected to one end of a rotating shaft 102 in the middle, and one end of the rotating shaft 102 passes through the other side of the outside of the frame 101 and is fixedly sleeved with a roller 105. When the motor 103 of this structure is driven and drives a rotating shaft 102 to rotate, the rotating shaft 102 will all rotate under the linkage force of the gear 104. When the rotating shaft 102 all rotates, it can drive the roller 105 to rotate to transmit the steel strand body 2. Several groups of clamps 6 are evenly clamped on the outside of the inner liner 4, and the clamps 6 are all in an arc-shaped structure. The clamps 6 of this structure can accurately position the inner liner 4 on the top plate of the continuous beam bridge to ensure the verticality of the inner liner 4 after installation, so that the steel strand body 2 can be accurately inserted and cut into the inner liner 4. A pad 7 is provided at the bottom of each group of clamps 6. The connection between the clamps 6 and the pad 7 can be fixed by welding, and the pad 7 is horizontally fixed on the top plate of the continuous beam bridge. The pad 7 of this structure can be horizontally padded at the bottom of the inner liner 4 to ensure the uniformity of the support height of the inner liner 4, to prevent the inner liner 4 from being tilted during installation and affecting the smooth discharge of the steel strand body 2. A curved bracket 8 is installed at a position corresponding to the opening 5 on the bottom wall of the inner liner 4, and a plurality of guide rollers 9 are arranged around the inner part of the curved bracket 8. The curved bracket 8 of this structure can be installed at a position corresponding to the inner wall of the inner liner 4 by passing through the opening 5, so that the guide rollers 9 can be used to guide the steel strand body 2, so that the steel strand body 2 can be more smoothly inserted and discharged inside the inner liner 4.The bottom of the curved bracket 8 is welded and fixed with an embedding strip 10, and the bottom wall inside the inner liner tube 4 is evenly provided with a plurality of embedding grooves that match the structure of the embedding strip 10. The curved bracket 8 of this structure can be embedded in the embedding groove on the inner wall of the inner liner tube 4 by embedding the embedding strip 10 to achieve the effect of rapid disassembly and assembly inside the inner liner tube 4, which is more convenient to use.

[0018] Working principle: When using the structure for rapid unloading of a whole bundle of prestressed steel strands of the continuous beam bridge, firstly, a number of pads 7 are evenly arranged on the top plate of the continuous beam bridge. The pads 7 can be fixedly connected to the top plate of the beam bridge through embedded parts, and then the full-length lining pipe 4 is fixedly placed on the top plate of the continuous beam bridge through a number of pads 7. When the lining pipe 4 is installed as a whole, clamps 6 are welded on both sides of each group of pads 7 to position the lining pipe 4, and the staff simultaneously passes the curved bracket 8 through the opening 5 and places it inside the lining pipe 4, and makes the engaging strip 10 engage in the engaging groove on the inner wall of the lining pipe 4, so as to install the curved bracket 8 in the position corresponding to the opening 5 inside the lining pipe 4. When it is necessary to unload the steel strand body 2 on the top plate of the continuous beam bridge, first at the end of the steel strand body 2 The bullet head protective cap 3 is engaged on the outside, and then the motor 103 of the bundle threading machine 1 is started. When the motor 103 is driven to drive a rotating shaft 102 to rotate, the rotating shaft 102 will rotate completely under the linkage force of the gear 104. When the rotating shaft 102 is fully rotated, it can drive the roller 105 to rotate to transmit the steel strand body 2 until the bundle threading machine 1 drives the steel strand body 2 to quickly pass through the inner lining tube 4. The inner lining tube 4 can guide the steel strand body 2 through the guide roller 9, so that the steel strand body 2 can be smoothly discharged inside the inner lining tube 4. At the same time, the staff can use the pull hook to pull the steel strand body 2 out of the inner lining tube 4 from the opening 5 and put it aside, so that the discharge rate of the prestressed steel strand body 2 is greatly accelerated, thereby completing a series of tasks.

[0019] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A structure for quickly unloading a whole bundle of prestressed steel strands for a continuous beam bridge, comprising a strand threading machine (1), wherein the strand threading machine (1) is connected in driving connection with a steel strand body (2), and is characterized in that: The end sleeve of the steel strand body (2) is provided with a bullet head protective cap (3), and a full-length inner lining pipe (4) is fixedly placed on the top plate of the continuous beam bridge, and a plurality of openings (5) are evenly arranged on the inner lining pipe (4).

2. The structure for rapid unloading of a whole bundle of prestressed steel strands for continuous beam bridges according to claim 1 is characterized in that: The bundle threading machine (1) comprises a frame (101), a rotating shaft (102), a motor (103), a gear (104) and a roller (105); the rotating shaft (102) is evenly arranged inside the frame (101); the motor (103) is installed on one side outside the frame (101); one end of the rotating shaft (102) passes through the other side outside the frame (101) and is fixedly sleeved with the roller (105).

3. The structure for rapid unloading of a whole bundle of prestressed steel strands for a continuous beam bridge according to claim 1 is characterized in that: A plurality of groups of clamps (6) are uniformly clamped on the outside of the inner lining tube (4), and the clamps (6) are all in an arc-shaped structure.

4. The structure for rapid unloading of a whole bundle of prestressed steel strands for a continuous beam bridge according to claim 3 is characterized in that: A cushion block (7) is provided at the bottom of each group of the clamps (6), and the cushion block (7) is horizontally fixed on the top plate of the continuous beam bridge.

5. The structure for rapid unloading of a whole bundle of prestressed steel strands for a continuous beam bridge according to claim 1 is characterized in that: A curved bracket (8) is installed at a position corresponding to the opening (5) on the bottom wall inside the inner lining tube (4), and a plurality of guide rollers (9) are arranged around the inside of the curved bracket (8).

6. The structure for rapid unloading of a whole bundle of prestressed steel strands for a continuous beam bridge according to claim 5 is characterized in that: A fitting strip (10) is fixed to the bottom of the curved bracket (8), and a plurality of fitting grooves matching the structure of the fitting strip (10) are evenly arranged on the bottom wall inside the inner liner tube (4).

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