Steel strand penetrating device for prestressed construction of prefabricated box girder

Abstract

The utility model discloses a steel strand pulling device for pre-stress construction of a prefabricated box girder, which comprises an upper shell of a pulling machine, one end of the lower part of the upper shell of the pulling machine is fixedly connected with a pulling machine base, and one end of the side surface of the upper shell of the pulling machine is provided with a transmission roller rotating shaft; by arranging the rotating disc, the fixed cross rod, the tightening motor and other structures, in the process that a steel strand is pressed and tightened by the driving roller and the pressing roller, the upper transmission roller can be assisted to play a certain tightening role, the steel strand is kept straight, the lifting effect of the upper transmission roller on the steel strand is enhanced, and the service life of the steel strand is prolonged. According to the steel strand collecting device, the steel strands can be collected at the same time, the steel strands can be cut off more conveniently at last, the service life of the upper transmission rollers and the service life of the pressing rollers are prolonged, the device can collect the two sets of steel strands at the same time and can flexibly adapt to the steel strands of different sizes and thicknesses by arranging the multiple sets of symmetrical transmission rollers, the multiple sets of symmetrical pressing rollers and the multiple sets of hydraulic telescopic rods, and the working efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bundle threading equipment, in particular to a steel strand bundle threading device used for prefabricated box girder prestressed construction. Background Art

[0002] Most of the existing steel strand bundling devices used for prestressed construction of prefabricated box girders only use two sets of rollers that squeeze each other to pull the steel strands in the prefabricated box to achieve a tightening effect. This method cannot ensure whether the steel strands are straightened or completely clamped by the two sets of rollers during the tightening process, affecting the subsequent bundling work. At the same time, only one bundling method is used, which greatly affects the service life of the roller group. The existing steel strand bundling devices used for prefabricated box girders prestressed construction can generally only bundle one steel strand at a time. For the situation where there are multiple sets of steel strands in the same opening of the prefabricated box girder, the work efficiency is low. Utility Model Content

[0003] The purpose of the utility model is to solve the problems raised by the above-mentioned background technology and to provide a steel strand threading device for prefabricated box girder prestressed construction, which can simultaneously bundle two steel strands and uses a locking and fixing mechanism to assist the roller group in pulling the steel strand device, which has a longer service life and a better pulling effect, thereby solving the problems raised by the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a steel strand threading device for prestressed construction of prefabricated box girders, comprising: an upper shell of a threading machine, a lower end of the upper shell of the threading machine is fixedly connected to a threading machine base, a side end of the upper shell of the threading machine is provided with a transmission roller shaft, the transmission roller shaft passes through the upper shell of the threading machine and is fixedly connected to an upper transmission roller, a side end of the transmission roller shaft is provided with a belt, an upper end of the upper shell of the threading machine is fixedly connected to a drive motor, an upper end of the base of the threading machine is fixedly connected to a hydraulic telescopic rod, an upper end of the hydraulic telescopic rod is fixedly connected to a pressure roller bracket, and a side end of the pressure roller bracket is rotatably connected to a pressure roller.

[0005] As a further solution of the utility model: a support column is fixedly connected to one end above the base of the bundle threading machine, a rotating disk is rotatably connected to a side section of the support column, a fixed cross bar is fixedly connected to one end of the side of the rotating disk, a threading through hole is provided at one end of the side of the fixed cross bar, a threaded hole is provided on the inner side of the fixed cross bar, a long threaded rod is threadedly connected to the threaded hole, a fixing nut is fixedly connected to one end of the side of the long threaded rod, and a tightening motor is fixedly connected to one end of the base of the bundle threading machine.

[0006] As a further solution of the utility model: four groups of supporting feet are symmetrically arranged at both ends below the base of the threading machine.

[0007] As a further solution of the utility model: the number of the transmission roller shafts and upper transmission rollers are both set to eight, and they are symmetrically arranged at both ends of the side of the upper shell of the bundle threading machine. The upper transmission roller is rotatably connected to one end of the inner side of the upper shell of the bundle threading machine. The number of the drive motors is only two, and they are fixedly connected to two relatively symmetrical transmission roller shafts.

[0008] As a further solution of the utility model: the threaded hole intersects with the threading through hole.

[0009] As a further solution of the utility model: the tightening motor passes through the support column and is fixedly connected to the rotating disk.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. In the utility model, a rotating disk, a fixed cross bar and a tightening motor are provided, so that the steel strand can be kept straight during the pressing and tightening process of the driven roller and the pressure roller, thereby enhancing the pulling effect of the upper transmission roller on the steel strand and making it more convenient to finally cut the steel strand. At the same time, it can assist the upper transmission roller in playing a certain tightening role and extend the service life of the upper transmission roller and the pressure roller.

[0012] 2. The utility model provides a plurality of mutually symmetrical transmission rollers, pressure rollers and hydraulic telescopic rods, which can simultaneously converge two groups of steel strands and flexibly adapt to steel strands of different sizes and thicknesses, thereby greatly improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a structural schematic diagram of the right side of the utility model;

[0015] Figure 3 It is a structural schematic diagram of the transmission roller in the utility model;

[0016] Figure 4 It is a schematic diagram of the top view of the locking and fixing mechanism in the utility model;

[0017] Figure 5 It is a structural schematic diagram of the side surface of the locking and fixing mechanism in the utility model.

[0018] In the figure: 1. Upper shell of the bundle threading machine; 2. Base of the bundle threading machine; 3. Drive roller shaft; 4. Upper drive roller; 5. Belt; 6. Drive motor; 7. Hydraulic telescopic rod; 8. Pressure roller bracket; 9. Pressure roller; 10. Support column; 11. Rotating plate; 12. Fixed cross bar; 13. Threading hole; 14. Threaded hole; 15. Long threaded rod; 16. Fixed nut; 17. Tightening motor; 18. Support foot. DETAILED DESCRIPTION

[0019] 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.

[0020] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. The following is an explanation of the embodiments of the present utility model based on the overall structure of the present utility model.

[0021] Reference Figures 1 to 3 In the embodiment of the utility model, a steel strand threading device for prestressed construction of prefabricated box beams comprises: an upper shell 1 of a threading machine, a lower end of the upper shell 1 of the threading machine is fixedly connected to a threading machine base 2, a side end of the upper shell 1 of the threading machine is provided with a transmission roller shaft 3, the transmission roller shaft 3 passes through the upper shell 1 of the threading machine and is fixedly connected to an upper transmission roller 4, a side end of the transmission roller shaft 3 is provided with a belt 5, an upper end of the upper shell 1 of the threading machine is fixedly connected to a driving motor 6, an upper end of the threading machine base 2 is fixedly connected to a hydraulic telescopic rod 7, an upper end of the hydraulic telescopic rod 7 is fixedly connected to a pressure roller bracket 8, and a side end of the pressure roller bracket 8 is rotatably connected to a pressure roller 9, eight groups of transmission roller shafts 3 and upper transmission rollers 4 are each provided, which are symmetrically arranged at both ends of the side of the upper shell 1 of the threading machine, the upper transmission roller 4 is rotatably connected to an inner end of the upper shell 1 of the threading machine, and only two groups of driving motors 6 are provided, which are fixedly connected to two symmetrical transmission roller shafts 3.

[0022] The above scheme is adopted: when in use, the two groups of steel strands passed through the prefabricated box beam are passed between the upper transmission roller 4 and the pressure roller 9. At this time, the hydraulic telescopic rod 7 is driven to lift the pressure roller bracket 8, driving the pressure roller 9 to lift, so that the pressure roller 9 and the upper transmission roller 4 squeeze the steel strands tightly. At this time, the drive motor 6 is started to pull and tighten the steel strands.

[0023] Reference Figure 1 , Figure 3 , Figure 4 and Figure 5 A support column 10 is fixedly connected to one end of the top of the bundle threading machine base 2, and a rotating disk 11 is rotatably connected to a side section of the support column 10. A fixed cross bar 12 is fixedly connected to one end of the side of the rotating disk 11. A threading hole 13 is opened at one end of the side of the fixed cross bar 12, and a threaded hole 14 is opened on the inner side of the fixed cross bar 12. A long threaded rod 15 is threadedly connected to the inner threaded hole 14, and a fixing nut 16 is fixedly connected to one end of the side of the long threaded rod 15. A tightening motor 17 is fixedly connected to one end of the top of the bundle threading machine base 2, and the threaded hole 14 intersects with the threading hole 13. The tightening motor 17 passes through the support column 10 and is fixedly connected to the rotating disk 11. Four groups of supporting feet 18 are symmetrically arranged at both ends of the bottom of the bundle threading machine base 2.

[0024] The above scheme is adopted: by setting up structures such as a rotating disk 11 and a fixed cross bar 12, the steel strands can be kept straight during the bundling process, thereby enhancing the pulling effect of the upper transmission roller 4 on the steel strands, and making it more convenient to finally cut the steel strands. At the same time, it can assist the upper transmission roller 4 in playing a certain tightening role, thereby extending the service life of the upper transmission roller 4 and the pressure roller 9.

[0025] The working principle of the utility model is: when in use, the two groups of steel strands inserted in the prefabricated box girder pass through the middle of the upper transmission roller 4 and the pressure roller 9, and pass through the two groups of threading holes 13 set on the two groups of fixed cross bars 12. By tightening the fixing nut 16, the steel strands are fixed and stabilized. At this time, the hydraulic telescopic rod 7 is driven to lift the pressure roller bracket 8, drive the pressure roller 9 to lift, so that the pressure roller 9 and the upper transmission roller 4 squeeze the steel strands tightly. At this time, the driving motor 6 and the tightening motor 17 are started to pull and tighten the steel strands. When the bundling work is completed, the hydraulic pliers are used to cut the steel strands between the threading holes 13 and the two groups of rollers.

[0026] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A steel strand threading device for prefabricated box girder prestressing construction, characterized in that: include: An upper shell (1) of a beam threading machine, wherein one lower end of the upper shell (1) of the beam threading machine is fixedly connected to a beam threading machine base (2), one side end of the upper shell (1) of the beam threading machine is provided with a transmission roller shaft (3), the transmission roller shaft (3) passes through the upper shell (1) of the beam threading machine and is fixedly connected to an upper transmission roller (4), one side end of the transmission roller shaft (3) is provided with a belt (5), one upper end of the upper shell (1) of the beam threading machine is fixedly connected to a drive motor (6), one upper end of the base (2) of the beam threading machine is fixedly connected to a hydraulic telescopic rod (7), one upper end of the hydraulic telescopic rod (7) is fixedly connected to a pressure roller bracket (8), and one side end of the pressure roller bracket (8) is rotatably connected to a pressure roller (9).

2. A steel strand threading device for prefabricated box girder prestressing construction according to claim 1, characterized in that: A support column (10) is fixedly connected to one end of the top of the bundle threading machine base (2); a rotating disk (11) is rotatably connected to a side section of the support column (10); a fixed cross bar (12) is fixedly connected to one end of the side of the rotating disk (11); a threading through hole (13) is provided at one end of the side of the fixed cross bar (12); a threaded hole (14) is provided on the inner side of the fixed cross bar (12); a long threaded rod (15) is threadedly connected to the inner thread of the threaded hole (14); a fixing nut (16) is fixedly connected to one end of the side of the long threaded rod (15); and a tightening motor (17) is fixedly connected to one end of the top of the bundle threading machine base (2).

3. The steel strand threading device for prefabricated box girder prestressing construction according to claim 1 is characterized in that: Four groups of supporting feet (18) are symmetrically arranged at two ends below the beam threading machine base (2).

4. The steel strand threading device for prefabricated box girder prestressing construction according to claim 1 is characterized in that: The transmission roller shafts (3) and upper transmission rollers (4) are each provided in eight groups, and are symmetrically arranged at both ends of the side of the upper shell (1) of the threading machine. The upper transmission rollers (4) are rotatably connected to one end of the inner side of the upper shell (1) of the threading machine. The drive motors (6) are provided in only two groups, and are fixedly connected to two relatively symmetrical transmission roller shafts (3).

5. The steel strand threading device for prefabricated box girder prestressing construction according to claim 2, characterized in that: The threaded hole (14) intersects with the threading through hole (13).

6. The steel strand threading device for prefabricated box girder prestressing construction according to claim 2, characterized in that: The tightening motor (17) passes through the support column (10) and is fixedly connected to the rotating disk (11).

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