Automatic prestressed steel strand unloading and binding system and construction method thereof

Abstract

A prestressed steel strand automatic discharging binding system and a construction method thereof, comprising the following steps: step one, the steel strand to be arranged is inserted into the clamping hole of the storage groove, the motor is turned on to drive the rotation of the storage groove, and the steel strand is wound into the storage groove. Step two, the steel strand passes through the automatic cutting device and the tractor, and when the length reaches the designed length, the automatic cutting device automatically cuts off the steel strand. Step three, after the discharging of the steel strand is completed, the storage groove is rotated to make the steel strands in the multiple storage grooves be synchronously output from the upper part and enter the transition folding box. Step four, the multiple steel strands pass through the transition folding box, the steel strands enter the steel strand receiving cylinder, and then are conveyed to the automatic binding device, and the automatic binding device falls. Step five, the storage groove continues to push until the automatic pushing device clamps the steel strand. The present application solves the technical problems of traditional manual one-by-one traction discharging and binding with iron wire, slow construction speed, and easy rusting and scratching of the steel strand due to storage on the ground, which affects the quality.

Description

Technical Field

[0001] This invention belongs to the field of building construction technology, and specifically relates to an automatic feeding and binding system for prestressed steel strands and its construction method. Background Technology

[0002] Because railway box girders have a large number of prestressed steel bars and a large weight of a single strand, construction is inconvenient. After the steel strands are cut, they are often stored on-site, making them susceptible to external environmental influences, which can lead to scratches and corrosion, reducing their strength and toughness. The traditional method is to manually pull the strands one by one and bind them with wire. This method is slow and the strands are easily scratched and corroded when stored on the ground, affecting the quality. Summary of the Invention

[0003] The purpose of this invention is to provide an automatic feeding and binding system for prestressed steel strands and its construction method, which solves the technical problems of traditional manual feeding and binding of prestressed steel strands one by one with wire, which is slow and the steel strands are easily scratched and corroded when stored on the ground, affecting the quality.

[0004] To achieve the above objectives, the present invention adopts the following technical solution.

[0005] An automatic feeding and binding system for prestressed steel strands includes an automatic binding device, an automatic cutting device, and an automatic pushing device. The take-up device is located on one side of the steel strand to be processed and includes a storage box and a mounting frame. The mounting frame is a frame structure with a first roller at its bottom. A traction device is installed on the lower right side of the mounting frame, and wire holes for passing through the steel strand are spaced longitudinally on the traction device. The automatic cutting device is located between the steel strand and the mounting frame. The storage box is mounted on the mounting frame and includes an outer sleeve and a take-up drum. The take-up drum is cylindrical and longitudinally positioned within the mounting frame. The vertical cross-section of the take-up drum is annular, and storage troughs are spaced longitudinally on its outer surface. A support is located in the inner annular channel of the take-up drum. The front and rear ends of the support are rotatably connected to the mounting frame. A motor is located on the mounting frame at a position corresponding to one end of the support. The motor is connected to the support and rotates the support. Each annular storage trough of the storage box is provided with a locking hole; the outer sleeve is fitted onto the outside of the storage box and is fixedly connected to the mounting frame; a lower strip-shaped opening is provided at the lower part of the outer sleeve, near the traction device; an upper strip-shaped opening is provided at the upper part of the outer sleeve, away from the traction device; a bracket is provided on the side of the take-up device away from the steel strand to be installed; a second roller is provided at the bottom of the bracket; a steel strand receiving tube is provided on the bracket, near the end of the take-up device; the steel strand receiving tube is cylindrical, and a pad is provided at the bottom of the steel strand receiving tube; the transition gathering box is located on the upper left side of the mounting frame between the steel strand receiving tube and the upper left side of the mounting frame, and a wire threading channel is provided inside the transition gathering box; the upper end of the wire threading channel faces the upper strip-shaped opening, and the lower end of the wire threading channel faces the steel strand receiving tube; the automatic binding device and the automatic pushing device are sequentially arranged on the bracket, and the automatic binding device is located near the steel strand receiving tube.

[0006] Preferably, the mounting frame includes a bottom frame, uprights, and a top frame; the bottom frame is rectangular; the first roller is connected to the bottom of the bottom frame; there are four uprights, which are respectively connected to the four corners of the bottom frame; the top frame is connected to the top of the four uprights; and a gate-shaped hanging bracket is provided on the top of the top frame, on the side near the automatic binding device.

[0007] Preferably, the pad is a trapezoidal block and is fixedly connected to the bracket; an arc-shaped groove adapted to the bottom of the steel strand receiving tube is provided on the top of the pad; the steel strand receiving tube is fixedly connected in the arc-shaped groove.

[0008] Preferably, the support includes a central shaft and support plates; the central shaft is longitudinally positioned at the center of the storage box; there are four support plates arranged at intervals along the circumference, and each support plate is positioned between the central shaft and the storage box.

[0009] Preferably, the transition gathering box includes a top plate, a bottom plate, and rollers; the vertical cross-sections of the top plate and the bottom plate are both S-shaped and arranged vertically parallel and spaced apart; the width of the top plate and the width of the bottom plate gradually decrease from top to bottom; there are two sets of rollers, which are respectively arranged between the two sides of the top plate and the bottom plate; the upper end of the roller is connected to the top plate, and the lower end of the roller is connected to the bottom plate.

[0010] Preferably, the automatic pushing device includes a frame, upper pressure rollers, lower pressure rollers, and a motor; the frame includes an upper frame, a lower frame, and vertical connecting plates; the upper frame is positioned directly above the lower frame and parallel to it; there are two sets of vertical connecting plates, arranged on the front and rear sides of the lower and upper frames respectively; each set of vertical connecting plates is horizontally spaced between the lower and upper frames; there is one set of upper pressure rollers, horizontally spaced within the frame, with one set of upper pressure rollers corresponding to one set of vertical connecting plates; both ends of the upper pressure rollers are rotatably connected to the vertical connecting plates on both sides; and vertical connecting plates are respectively positioned on the front and rear sides of the upper pressure rollers. There is an upper synchronous transmission gear; there is a set of lower pressure rollers, which are correspondingly arranged below a set of upper pressure rollers; the outer surfaces of the upper and lower pressure rollers are respectively provided with elastic rubber layers, and the distance between the upper and lower pressure rollers is adapted to the diameter of the steel strand; both ends of the lower pressure rollers are rotatably connected to the vertical connecting plates on both sides; lower synchronous transmission gears are respectively arranged on the front and rear sides of the lower pressure rollers; the corresponding upper and lower synchronous transmission gears mesh with each other; there is a set of motors, which are respectively installed on the outside of a set of vertical connecting plates, and the motors are correspondingly arranged with the lower pressure rollers; the output end of the motor is connected to the lower pressure rollers and drives the lower pressure rollers to rotate.

[0011] Preferably, an upper bearing is installed on the upper part of the vertical connecting plate at the connection position corresponding to the upper pressure roller; a lower bearing is installed on the lower part of the vertical connecting plate at the connection position corresponding to the lower pressure roller; an upper rotating shaft is connected to both ends of the upper pressure roller, and the upper rotating shaft is connected to the upper bearing; an upper synchronous transmission gear is connected to the upper rotating shaft; a lower rotating shaft is connected to both ends of the lower pressure roller, and the lower rotating shaft is connected to the lower bearing; the end of the lower rotating shaft is connected to the motor; and the lower synchronous transmission gear is connected to the lower rotating shaft.

[0012] A construction method for an automatic feeding and binding system for prestressed steel strands includes the following steps.

[0013] Step 1: Thread the steel strand to be processed into the locking holes of the storage trough, turn on the motor to drive the storage trough to rotate, and wind the steel strand into the storage trough.

[0014] Step two: The steel strand passes through the automatic cutting device and the traction device. Once the length reaches the design length, the automatic cutting device will automatically cut the steel strand.

[0015] Step 3: After the steel strands are fed into the feed box, rotate the storage trough to allow the steel strands in multiple storage troughs to be output from the top simultaneously and enter the transition gathering box.

[0016] Step four: Multiple steel strands pass through a transition gathering box. After entering the steel strand receiving tube, the steel strands are transported to an automatic binding device. The automatic binding device then descends to automatically bind the steel strands.

[0017] Step 5: The storage tank continues to push until the automatic pushing device clamps the steel strand.

[0018] Step 6: After the automatic pushing device clamps the steel strand, it pushes the steel strand forward in a cycle until all the steel strands enter the prestressed duct, thus completing the steel strand operation.

[0019] Compared with the prior art, the present invention has the following features and beneficial effects.

[0020] 1. The prestressed steel strand automatic feeding and binding system of the present invention comprises five parts: a take-up device, an automatic cutting device, a transition take-up box, an automatic binding device, and an automatic pushing device. The take-up device and the transition take-up box are mounted on the mounting frame, and the automatic binding device and the automatic pushing device are mounted on the bracket. The bottom of the mounting frame and the bracket are equipped with rollers to enable rapid transfer.

[0021] 2. The transition gathering box in this invention is made of high-strength steel. To prevent the sharp cut at the cut of the steel strand from cutting the steel plate and causing the output of the steel strand to be stuck, the transition port adopts a transition mode with a flat inlet and a square outlet, and rollers are set on both sides to prevent the steel strand from getting stuck.

[0022] 3. The upper and lower pressure rollers of the present invention are provided with elastic rubber layers, which can increase friction and ensure that the steel strand moves forward smoothly; in addition, the elastic rubber layer protects the steel strand from being scratched, and the upper and lower pressure rollers are also provided with elastic rubber layers.

[0023] 4. The prestressed steel strand automatic feeding and binding system of the present invention can realize rapid feeding of steel strands, and the equipment occupies a small area and can be flexibly moved within the site according to the construction process, which is convenient for construction. The feeding accuracy of steel strands is high, which can effectively reduce the loss of steel strands during feeding. At the same time, the rotating storage of steel strands helps to protect the steel strands and prevent them from falling to the ground, causing contamination and damage to the steel strands. Attached Figure Description

[0024] The present invention will now be described in further detail with reference to the accompanying drawings.

[0025] Figure 1 This is a schematic diagram of the prestressed steel strand automatic feeding and binding system of the present invention.

[0026] Figure 2 This is a schematic diagram of the structure of the steel strand passing through the traction device according to the present invention.

[0027] Figure 3 This is a schematic diagram of the winding device of the present invention.

[0028] Figure 4 This is a schematic diagram of the arrangement structure of the transition gathering box in this invention.

[0029] Figure 5 This is a detailed structural diagram of the transition gathering box in this invention.

[0030] Figure 6 This is a schematic diagram of the internal structure of the storage box in this invention.

[0031] Figure 7 This is a schematic diagram of the structure of the roller in this invention.

[0032] Figure 8 This is a schematic diagram of the structure of the pad block in this invention.

[0033] Figure 9 This is a schematic diagram of the automatic pushing device in this invention.

[0034] Reference numerals: 1 - Steel strand, 2 - Storage box, 2.1 - Outer sleeve, 2.2 - Take-up reel, 3 - Mounting frame, 3.1 - Bottom frame, 3.2 - Column, 3.3 - Top frame, 3.4 - Portal-type hanging bracket, 4 - First roller, 5 - Tractor, 6 - Wire hole, 7 - Storage trough, 8 - Support, 8.1 - Central shaft, 8.2 - Support plate, 9 - Motor, 10 - Locking hole, 11 - Lower strip opening, 12 - Upper strip opening, 13 - Bracket, 14 - Second roller, 15 - Support plate, 16 - Steel strand receiving reel, 17 - Pad, 18 - Transition gathering box, 18. 1 – Top plate, 18.2 – Bottom plate, 18.3 – Roller, 18.3.1 – Insert rod, 18.3.2 – Sleeve, 19 – Threading hole, 20 – Arc groove, 21 – Frame, 21.1 – Upper frame, 21.2 – Lower frame, 21.3 – Vertical connecting plate, 22 – Upper pressure roller, 23 – Lower pressure roller, 24 – Motor, 25 – Upper synchronous transmission gear, 26 – Lower synchronous transmission gear, 27 – Upper bearing, 28 – Lower bearing, 29 – Upper rotating shaft, 30 – Lower rotating shaft, A – Wire take-up device, B – Automatic binding device, C – Automatic cutting device, D – Automatic pushing device. Detailed Implementation

[0035] like Figure 1-9As shown, this automatic feeding and binding system for prestressed steel strands includes a take-up device A, an automatic binding device B, an automatic cutting device C, and an automatic pushing device D; it also includes a transition take-up box 18; the take-up device A is located on one side of the steel strand 1 to be processed, and includes a storage box 2 and a mounting frame 3; the mounting frame 3 is a frame structure, and a first roller 4 is provided at the bottom of the mounting frame 3; a traction device 5 is installed on the lower right side of the mounting frame 3, and wire holes 6 for passing through the steel strand 1 are opened longitudinally at intervals on the traction device 5; the automatic cutting device C is located on the steel strand 1 Between the mounting frame 3 and the storage box 2, which is mounted on the mounting frame 3, the storage box 2 includes an outer sleeve 2.1 and a take-up drum 2.2. The take-up drum 2.2 is cylindrical and longitudinally arranged in the mounting frame 3. The vertical cross-section of the take-up drum 2.2 is annular. Storage grooves 7 are arranged longitudinally at intervals on the outer surface of the take-up drum 2.2. A bracket 8 is arranged in the inner annular channel of the take-up drum 2.2. The front and rear ends of the bracket 8 are rotatably connected to the mounting frame 3. A motor 9 is arranged on the mounting frame 3 at a position corresponding to one end of the bracket 8. The motor 9 is connected to the bracket 8 and carries the bracket 8. Rotation; each annular storage trough 7 of the storage box 2 is provided with a locking hole 10; the outer cover sleeve 2.1 is sleeved on the outside of the storage box 2, and the outer cover sleeve 2.1 is fixedly connected to the mounting frame 3; a lower strip opening 11 is provided at the lower part of the outer cover sleeve 2.1, near the puller 5; an upper strip opening 12 is provided at the upper part of the outer cover sleeve 2.1, away from the puller 5; a bracket 13 is provided on the side of the take-up device A away from the steel strand 1 to be installed; a second roller 14 is provided at the bottom of the bracket 13; a... A steel strand receiving tube 16 is provided; the steel strand receiving tube 16 is cylindrical, and a pad 17 is provided at the bottom of the steel strand receiving tube 16; a transition gathering box 18 is provided on the upper left side of the mounting frame 3 between the steel strand receiving tube 16, and a wire threading channel 19 is provided inside the transition gathering box 18; the upper end of the wire threading channel 19 faces the upper strip opening 12, and the lower end of the wire threading channel 19 faces the steel strand receiving tube 16; the automatic binding device B and the automatic pushing device D are sequentially arranged on the bracket 13, and the automatic binding device B is located on the side closer to the steel strand receiving tube 16.

[0036] In this embodiment, a lifting device is provided at the bottom of the bracket 13 to adjust the height of the bracket 13; the lifting device is a forklift or a lifting platform.

[0037] In this embodiment, the mounting frame 3 includes a bottom frame 3.1, uprights 3.2, and a top frame 3.3; the bottom frame 3.1 is rectangular; the first roller 4 is connected to the bottom of the bottom frame 3.1; there are four uprights 3.2, which are respectively connected to the four corner positions of the bottom frame 3.1; the top frame 3.3 is connected to the top of the four uprights 3.2; a gate-shaped hanging bracket 3.4 is provided on the top of the top frame 3.3, on the side near the automatic binding device B.

[0038] In this embodiment, the pad 17 is a trapezoidal block and is fixedly connected to the bracket 13; an arc-shaped groove 20 adapted to the bottom of the steel strand receiving tube 16 is provided on the top of the pad 17; the steel strand receiving tube 16 is fixedly connected in the arc-shaped groove 20.

[0039] In this embodiment, the support 8 includes a central shaft 8.1 and support plates 8.2; the central shaft 8.1 is longitudinally arranged at the center of the storage box 2; there are four support plates 8.2, which are arranged at intervals in the circumferential direction, and each support plate 8.2 is arranged between the central shaft 8.1 and the storage box 2.

[0040] In this embodiment, the transition gathering box 18 includes a top plate 18.1, a bottom plate 18.2, and rollers 18.3; the vertical cross-sections of the top plate 18.1 and the bottom plate 18.2 are both S-shaped and arranged vertically parallel and spaced apart; the width of the top plate 18.1 and the width of the bottom plate 18.2 gradually decrease from top to bottom; there are two sets of rollers 18.3, which are respectively arranged between the two sides of the top plate 18.1 and the bottom plate 18.2; the upper end of the rollers 18.3 is connected to the top plate 18.1, and the lower end of the rollers 18.3 is connected to the bottom plate 18.2.

[0041] In this embodiment, the automatic binding device B adopts an existing fully automatic rebar binding machine.

[0042] In this embodiment, the automatic pushing device D includes a frame 21, upper pressure rollers 22, lower pressure rollers 23, and a motor 24. The frame 21 includes an upper frame 21.1, a lower frame 21.2, and vertical connecting plates 21.3. The upper frame 21.1 is positioned directly above and parallel to the lower frame 21.2. There are two sets of vertical connecting plates 21.3, which are respectively arranged on the front and rear sides of the lower frame 21.2 and the upper frame 21.1. Each set of vertical connecting plates 21.3 is horizontally spaced between the lower frame 21.2 and the upper frame 21.1. There is one set of upper pressure rollers 22, which are horizontally spaced within the frame 21, and one set of upper pressure rollers 22 corresponds to one set of vertical connecting plates 21.3. The two ends of the upper pressure rollers 22 are respectively connected to the vertical connecting plates 21 on both sides. 3. Rotary connection; upper synchronous transmission gears 25 are respectively provided on the front and rear sides of the upper pressure roller 22; there is a set of lower pressure rollers 23, which are correspondingly arranged below the set of upper pressure rollers 22; elastic rubber layers are respectively provided on the outer surfaces of the upper pressure rollers 22 and lower pressure rollers 23, and the distance between the upper pressure rollers 22 and lower pressure rollers 23 is adapted to the diameter of the steel strand; the two ends of the lower pressure rollers 23 are rotatably connected to the vertical connecting plates 21.3 on both sides; lower synchronous transmission gears 26 are respectively provided on the front and rear sides of the lower pressure rollers 23; the corresponding upper and lower synchronous transmission gears mesh with each other; there is a set of motors 24, which are respectively installed on the outside of the set of vertical connecting plates 21.3, and the motors 24 are correspondingly arranged with the lower pressure rollers 23; the output end of the motor 24 is connected to the lower pressure rollers 23 and drives the lower pressure rollers 23 to rotate.

[0043] In this embodiment, an upper bearing 27 is installed on the upper part of the vertical connecting plate 21.3 at the connection position corresponding to the upper pressure roller 22; a lower bearing 28 is installed on the lower part of the vertical connecting plate 21.3 at the connection position corresponding to the lower pressure roller 23; an upper rotating shaft 29 is connected to both ends of the upper pressure roller 22, and the upper rotating shaft 29 is connected to the upper bearing 27; an upper synchronous transmission gear 25 is connected to the upper rotating shaft 29; a lower rotating shaft 30 is connected to both ends of the lower pressure roller 23, and the lower rotating shaft 30 is connected to the lower bearing 28; the end of the lower rotating shaft 30 passes through the inner ring of the lower bearing 28 and is connected to the motor 24; and a lower synchronous transmission gear 26 is connected to the lower rotating shaft 30. The motor 24 drives the lower shaft 30 to rotate, which in turn drives the lower synchronous transmission gear 26 and the lower pressure wheel 23 to rotate. The lower synchronous transmission gear 26 then drives the upper synchronous transmission gear 25 to rotate, which in turn drives the upper shaft 29 and the upper pressure wheel 22 to rotate. Finally, the friction between the lower pressure wheel 23, the upper pressure wheel 22 and the steel strand moves the steel strand forward.

[0044] In this embodiment, the traction device 5 is block-shaped and fixedly connected to the mounting frame 3.

[0045] The construction method of this prestressed steel strand automatic feeding and binding system includes the following steps.

[0046] Step 1: Thread the steel strand 1 to be processed into the locking hole 10 of the storage tank 7, turn on the motor 9 to drive the storage tank 7 to rotate, and wind the steel strand 1 into the storage tank 7.

[0047] Step 2: The steel strand 1 passes through the automatic cutting device C and the traction device 5. When the length reaches the design length, the automatic cutting device C automatically cuts the steel strand 1. The automatic cutting device C can be a fully automatic CNC rebar straightening and cutting machine. Before winding the wire, different parameters are pre-input into the automatic cutting device C, including the rebar cutting length, the number of rebars, and the position of the rebars. During construction, the automatic cutting device C automatically introduces the cutting length according to the position of the duct.

[0048] Step 3: After the steel strand 1 is fed out, rotate the storage trough 7 so that the steel strand 1 in multiple storage troughs 7 is output from the top at the same time and enters the transition gathering box.

[0049] Step four: Multiple steel strands 1 pass through a transition gathering box. After entering the steel strand receiving tube 16, the steel strands 1 are transported to the automatic binding device B. The automatic binding device B falls down to realize the automatic binding of the steel strands 1.

[0050] Step 5: The storage tank 7 continues to push until the automatic pushing device clamps the steel strand 1.

[0051] Step 6: After the automatic pushing device clamps the steel strand 1, it pushes the steel strand forward in a cycle until all the steel strands enter the prestressed duct, thus completing the steel strand operation.

[0052] In this embodiment, the roller 18.3 includes an insertion rod 18.3.1 and a sleeve 18.3.2; the insertion rod 18.3.1 is fixedly connected between the top plate 18.1 and the bottom plate 18.2; the sleeve 18.3.2 is sleeved on the outside of the insertion rod 18.3.1, and the sleeve 18.3.2 can rotate on the insertion rod 18.3.1. The transition gathering box is made of high-strength steel. To prevent the sharp cut at the steel strand cutting point from cutting the steel plate and causing the steel strand output to jam, the transition port adopts a flat inlet and square outlet transition mode, with rollers on both sides to prevent the steel strand from jamming.

[0053] In this embodiment, a support plate 15 is provided at the bottom of the motor 24; the motor 24 is mounted on the support plate 15.

Claims

1. A prestressed steel strand automatic unloading and binding system, comprising a take-up device (A), an automatic binding device (B), an automatic cutting device (C) and an automatic pushing device (D); characterized in that: The application also comprises a transition winding box (18); the winding device (A) is arranged on one side of the steel strand (1) to be arranged, comprising a storage box (2) and a mounting frame (3); the mounting frame (3) is a frame structure, and a first roller (4) is arranged at the bottom of the mounting frame (3); a puller (5) is arranged at the lower right side of the mounting frame (3), and wire guide holes (6) for passing through the steel strand (1) are arranged on the puller (5) in the longitudinal direction; the automatic cutting device (C) is arranged between the steel strand (1) and the mounting frame (3); the storage box (2) is arranged on the mounting frame (3) and comprises an outer sleeve (2.1) and a winding drum (2.2); the winding drum (2.2) is in a columnar shape and is arranged in the mounting frame (3) in the longitudinal direction; the vertical section of the winding drum (2.2) is annular, and storage grooves (7) are arranged on the outer surface of the winding drum (2.2) in the longitudinal direction; a support (8) is arranged in the inner annular channel of the winding drum (2.2); the front end and the rear end of the support (8) are rotatably connected with the mounting frame (3); a motor (9) is arranged on the mounting frame (3) at a position corresponding to one end of the support (8); the motor (9) is connected with the support (8) and rotates with the support (8); a clamping hole (10) is arranged in each annular storage groove (7) of the storage box (2); the outer sleeve (2.1) is arranged on the outer side of the storage box (2) and is fixedly connected with the mounting frame (3); a lower strip-shaped opening (11) is arranged on the lower part of the outer sleeve (2.1) near the puller (5); an upper strip-shaped opening (12) is arranged on the upper part of the outer sleeve (2.1) away from the puller (5); a bracket (13) is arranged on the side of the winding device (A) away from the steel strand (1) to be arranged; a second roller (14) is arranged at the bottom of the bracket (13); a steel strand receiving drum (16) is arranged on one end of the bracket (13) near the winding device (A); the steel strand receiving drum (16) is in a cylindrical shape, and a pad (17) is arranged at the bottom of the steel strand receiving drum (16); a transition winding box (18) is arranged at a position between the left upper part of the mounting frame (3) and the steel strand receiving drum (16), and a wire passing hole (19) is arranged in the transition winding box (18); the upper end of the wire passing hole (19) faces the upper strip-shaped opening (12), and the lower end of the wire passing hole (19) faces the steel strand receiving drum (16); the automatic binding device (B) and the automatic pushing device (D) are arranged on the bracket (13) in sequence, and the automatic binding device (B) is arranged on the side near the steel strand receiving drum (16). The transition converging box (18) comprises a top plate (18.1), a bottom plate (18.2) and rollers (18.3); the vertical sections of the top plate (18.1) and the bottom plate (18.2) are both S-shaped, and are arranged vertically and in parallel and at intervals; the width of the top plate (18.1) and the width of the bottom plate (18.2) are both gradually reduced from top to bottom; the rollers (18.3) are provided in two groups and are arranged between the two sides of the top plate (18.1) and the bottom plate (18.2); the upper ends of the rollers (18.3) are connected with the top plate (18.1), and the lower ends of the rollers (18.3) are connected with the bottom plate (18.2).

2. The automatic stranding system for pre-stressed steel strand according to claim 1, characterized in that: The mounting rack (3) comprises a bottom frame (3.1), upright columns (3.2) and a top frame (3.3); the bottom frame (3.1) is rectangular; the first rollers (4) are connected at the bottom of the bottom frame (3.1); the upright columns (3.2) are four in number and are connected at the four corner positions of the bottom frame (3.1); the top frame (3.3) is connected at the top of the four upright columns (3.2); a door-shaped hanging rack (3.4) is arranged at the top of the top frame (3.3) and close to one side of the automatic binding device (B).

3. The automatic strapping system for prestressed steel strand blanking according to claim 1, characterized in that: The cushion block (17) is a trapezoidal block and is fixedly connected with the bracket (13); an arc-shaped groove (20) is arranged at the top of the cushion block (17) and is adapted to the bottom of the steel strand receiving cylinder (16); the steel strand receiving cylinder (16) is fixedly connected in the arc-shaped groove (20).

4. The automatic stranding system for pre-stressed steel strand according to claim 1, characterized in that: The support (8) comprises a middle shaft (8.1) and support plates (8.2); the middle shaft (8.1) is arranged at the center of the storage box (2) in the longitudinal direction; the support plates (8.2) are four in number, are arranged at intervals in the circumferential direction and are arranged between the middle shaft (8.1) and the storage box (2).

5. The automatic strapping system for pre-stressed steel strand blanking according to claim 1, characterized in that: The automatic pushing device (D) comprises a frame body (21), an upper pressing wheel (22), a lower pressing wheel (23) and a motor (24); the frame body (21) comprises an upper frame (21.1), a lower frame (21.2) and vertical connecting plates (21.3); the upper frame (21.1) is arranged directly above the lower frame (21.2) and is parallel to the lower frame (21.2); the vertical connecting plates (21.3) are arranged in two groups, and the two groups of vertical connecting plates (21.3) are arranged on the front and back sides of the lower frame (21.2) and the upper frame (21.1) respectively; each group of vertical connecting plates (21.3) is connected between the lower frame (21.2) and the upper frame (21.1) in a transverse direction; the upper pressing wheel (22) is arranged in a group in the frame body (21) in a transverse direction, and a group of upper pressing wheels (22) is arranged correspondingly to a group of vertical connecting plates (21.3); the two ends of the upper pressing wheel (22) are rotatably connected to the vertical connecting plates (21.3) on the two sides respectively; upper synchronous transmission gears (25) are arranged on the front and back sides of the upper pressing wheel (22) respectively; the lower pressing wheel (23) is arranged in a group, and a group of lower pressing wheels (23) is arranged correspondingly below a group of upper pressing wheels (22); the outer surfaces of the upper pressing wheel (22) and the lower pressing wheel (23) are respectively provided with elastic rubber layers, and the spacing between the upper pressing wheel (22) and the lower pressing wheel (23) is adapted to the diameter of the steel strand; the two ends of the lower pressing wheel (23) are rotatably connected to the vertical connecting plates (21.3) on the two sides respectively; lower synchronous transmission gears (26) are arranged on the front and back sides of the lower pressing wheel (23) respectively; the upper and lower synchronous transmission gears correspond to each other and are meshed with each other; the motor (24) is arranged in a group and is mounted on the outer side of a group of vertical connecting plates (21.3), and the motor (24) is arranged correspondingly to the lower pressing wheel (23); the output end of the motor (24) is connected to the lower pressing wheel (23), and the lower pressing wheel (23) rotates with the motor (24).

6. The automatic prestressed steel strand binding system of claim 5, wherein: The upper part of the vertical connecting plate (21.3) is provided with an upper bearing (27) at the connecting position corresponding to the upper pressing wheel (22); the lower part of the vertical connecting plate (21.3) is provided with a lower bearing (28) at the connecting position corresponding to the lower pressing wheel (23); the two ends of the upper pressing wheel (22) are connected with upper rotating shafts (29), and the upper rotating shafts (29) are connected with the upper bearings (27); the upper synchronous transmission gears (25) are connected to the upper rotating shafts (29); the two ends of the lower pressing wheel (23) are connected with lower rotating shafts (30), and the lower rotating shafts (30) are connected with the lower bearings (28); the end of the lower rotating shaft (30) is connected with the motor (24); the lower synchronous transmission gears (26) are connected to the lower rotating shafts (30).

7. A construction method of the automatic uncoiling and binding system of the prestressed steel strand according to any one of claims 1-6, characterized in that, The steps are as follows: Step one, the steel strand (1) to be arranged is inserted into the clamping hole (10) of the storage groove (7), the motor (9) is turned on to drive the storage groove (7) to rotate, and the steel strand (1) is wound into the storage groove (7); Step two, the steel strand (1) passes through the automatic cutting device (C) and the puller (5), and when the length reaches the designed length, the automatic cutting device (C) automatically cuts the steel strand (1); Step three, after the steel strand (1) is discharged, the storage tank (7) is rotated to make the steel strands (1) in multiple storage tanks (7) be output from the upper part synchronously and enter the transition folding box (18); Step four, the multiple steel strands (1) pass through the transition folding box (18), and after the steel strands (1) enter from the steel strand receiving cylinder (16), they are conveyed to the automatic binding device (B), and the automatic binding device (B) falls to realize the automatic binding of the steel strands (1); Step five, the storage tank (7) continues to push until the automatic pushing device (D) clamps the steel strand (1); Step six, after the automatic pushing device (D) clamps the steel strand (1), the steel strand is circularly pushed forward until the steel strand enters the prestressed hole completely, and the steel strand operation is completed.

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