Bending tool for large-size angle steel of power transmission tower

Abstract

Angle steel placing seats are arranged at the four corners of the top face of a bending base table respectively, a clamping device is correspondingly arranged on the side, located on the angle steel placing seats, of the top face of the bending base table, and the top faces of the angle steel placing seats are perpendicular to the end face facing the clamping device. A side plate on one side of to-be-bent angle steel fixed to the angle steel containing base through a clamping device is attached to the top face of the angle steel containing base, and a side plate on the other side of the to-be-bent angle steel is clamped and fixed to the end face, facing the clamping device, of the angle steel containing base through the clamping device. The positioning vertical plate is attached to the inclined groove wall of a groove opening formed in a side plate corresponding to the angle steel to be bent. According to the structure, the bending tool for the large-size angle steel of the power transmission tower can quickly position and fix the angle steel to be bent, the large-size angle steel can be conveniently bent, and it can be guaranteed that the bending angle is consistent with the design angle.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of technical field of extra-high voltage iron tower angle steel bending, specifically a kind of transmission tower large size angle steel bending tool. BACKGROUND

[0002] Transmission tower is a plurality of steel members, plate members, angle steel splicing fixed. Due to the structure of transmission tower, some parts need to be bent according to the tower structure design in actual production. The current angle steel bending is to heat the angle steel bending to red-hot state, and then bend the red-hot position of the angle steel through the pressure bending equipment. The applicant has applied for a plurality of patents for angle steel bending to solve the technical problem of angle steel bending of transmission tower.

[0003] With the development and popularization of extra-high voltage transmission, more and more transmission towers need to meet the specifications of extra-high voltage transmission, and the angle steel required for the tower for extra-high voltage transmission is thicker and the side plate of the angle steel is larger, which increases the bending difficulty of the angle steel. Although the bending equipment of the applicant can be used for bending most sizes of angle steel, it cannot effectively bend larger size angle steel due to the limitation of the rated power of the related equipment and the space size of the bending equipment.

[0004] Because the side plate of this type of angle steel is wider and thicker, a notch must be made in one of the side plates during bending, and the notch is welded and fixed after bending. However, this operation method has a problem of how to ensure that the actual bending angle is consistent with the designed bending angle. Therefore, the applicant urgently needs a tool for angle steel bending to solve the above technical problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the shortcomings of the prior art, providing a transmission tower large size angle steel bending tool, which can quickly position and fix the angle steel to be bent, facilitating the bending of large size angle steel, and ensuring that the bending angle is consistent with the designed angle.

[0006] The technical scheme adopted by the utility model is:

[0007] The utility model discloses a transmission tower large -size angle steel bending frock, including the bending base, the bending base top's four corners respectively are equipped with angle steel placing seat, the bending base top is located angle steel placing seat's one side correspondingly is equipped with the clamping device that will be bent angle steel clamping fixed in angle steel placing seat, the angle steel placing seat top is perpendicular with the end face of facing clamping device, and the side plate of one side of the angle steel that will be bent is fixed with the angle steel placing seat through the clamping device and the angle steel placing seat top, and the side plate of the other side is fixed in the end face of angle steel placing seat facing clamping device through the clamping device, one end of the angle steel placing seat top is equipped with the positioning vertical board, and the positioning vertical board is attached with the inclined groove wall of the slot of the corresponding side plate of the angle steel that will be bent.

[0008] The utility model discloses further improved scheme is, the clamping device includes the connecting seat fixed in the bending base top, the connecting seat is screwed with the screw rod, the screw rod is coaxially rotationally connected with the backing plate in one end of facing angle steel placing seat, and one end of the screw rod is fixed with the hand wheel.

[0009] The utility model discloses further improved scheme is, the screw rod is equipped with a plurality of, along with the even distribution of angle steel placing seat's extension direction parallel.

[0010] The utility model discloses further improved scheme is, the positioning vertical board is fixedly connected with the top of angle steel placing seat through the swing bar, and the swing bar is parallel with the positioning vertical board.

[0011] The utility model discloses further improved scheme is, one end of the swing bar is swinged with the angle steel placing seat through the vertical rod A, and the other end of the swing bar is fixedly connected with the angle steel placing seat through the vertical rod B, the positioning vertical board is fixedly connected in the swing bar bottom, the bottom brim of the positioning vertical board is lower than the top of the angle steel that will be bent and placed in angle steel placing seat, and the top brim height of the positioning vertical board is higher than or equal to the top of the angle steel that will be bent in angle steel placing seat, the vertical rod A and vertical rod B are perpendicular with the top of angle steel placing seat respectively, and the thickness of the positioning vertical board is matched with the diameter of vertical rod A.

[0012] The utility model discloses further improved scheme is, the vertical rod A is fixed in the prismatic position of the end of angle steel placing seat and the end face of facing clamping device.

[0013] The utility model discloses further improved scheme is, when the angle steel that will be bent is fixed through the clamping device and angle steel placing seat, the slot is located the side plate one end of the angle steel that will be bent and the vertical rod A limit contact of contacting clamping device.

[0014] The utility model discloses further improved scheme is, the vertical rod A protrudes in the end of angle steel placing seat.

[0015] The utility model discloses further improve scheme is, the bottom end of stand B passes through the arc -shaped slot hole of angle iron placing seat top surface place, stand B along arc -shaped slot hole adjustment moves, and the part of stand B bottom end corresponds the arc -shaped slot hole position is equipped with thread, and is locked and fixed through lock nut B with angle iron placing seat top surface, arc -shaped slot hole is equipped with the end of stand A of angle iron placing seat top surface and is located.

[0016] The utility model discloses further improve scheme is, the middle part of swing lever is equipped with the strip -shaped through -hole that sets along swing lever extension direction, the strip -shaped through -hole is up and down and passes through swing lever, the positioning vertical board moves along strip -shaped through -hole, the top surface both ends of positioning vertical board are equipped with connecting screw rod B respectively upwards, connecting screw rod B passes through strip -shaped through -hole and is locked and fixed with swing lever through lock nut C.

[0017] The utility model discloses further improve scheme is, the middle part of swing lever is equipped with the strip -shaped through -hole that sets along swing lever extension direction, the strip -shaped through -hole is up and down and passes through swing lever, the positioning vertical board moves along strip -shaped through -hole, the top surface both ends of positioning vertical board are equipped with connecting screw rod B respectively upwards, connecting screw rod B passes through strip -shaped through -hole and is locked and fixed with swing lever through lock nut C.

[0018] First, the power transmission tower large -size angle steel bending tool of the utility model can quickly position and fix the angle steel to be bent, which is convenient for bending the large -size angle steel, and can ensure that the bending angle is consistent with the design angle.

[0019] Second, the power transmission tower large -size angle steel bending tool of the utility model can be used for bending the large -size angle steel of different bending angles through the angle adjustment of the positioning vertical board by the swing lever, thereby improving the application range of the utility model.

[0020] Third, the power transmission tower large -size angle steel bending tool of the utility model can be used for the angle steel of different sizes through the position adjustment of the positioning vertical board along the strip -shaped through -hole, thereby further improving the application range of the utility model.

[0021] Fourth, the power transmission tower large -size angle steel bending tool of the utility model can quickly and accurately position the positioning vertical board through the swing of the swing lever along the arc -shaped slot hole around the stand A, thereby improving the positioning efficiency and ensuring the bending accuracy of the angle steel. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the top view schematic diagram of the utility model.

[0023] Figure 2 It is the top view enlarged schematic diagram of the position of one of the angle steel placing seats of the utility model.

[0024] Figure 3 It is Figure 2 It is the main view enlarged schematic diagram of the position.

[0025] Figure 4 It is Figure 2 It is the top view enlarged schematic diagram of the angle steel when being fixed.

[0026] Figure 5 for Figure 2 A top-down enlarged view of the angle steel when it is bent. Detailed Implementation

[0027] Combination Figure 1 and Figure 3 It is known that the bending fixture for large-size angle steel of transmission tower includes a bending base 1. Angle steel placement seats 2 are respectively provided at the four corners of the top surface of the bending base 1. A clamping device is provided on one side of the top surface of the bending base 1, which clamps and fixes the angle steel 17 to be bent to the angle steel placement seat 2. The top surface of the angle steel placement seat 2 is perpendicular to the end face facing the clamping device. The side plate of one side of the angle steel 17 to be bent, which is fixed to the angle steel placement seat 2 by the clamping device, is in contact with the top surface of the angle steel placement seat 2, and the side plate of the other side is clamped and fixed to the end face of the angle steel placement seat 2 facing the clamping device by the clamping device. A positioning plate 6 is provided at one end of the top surface of the angle steel placement seat 2. The positioning plate 6 is in contact with the inclined groove wall 19 of the groove 18 provided on the corresponding side plate of the angle steel 17 to be bent.

[0028] The clamping device includes a connecting seat 4 fixed to the top surface of the bending base 1. The connecting seat 4 is threadedly connected to a tightening screw 5. A pad 3 is coaxially rotatably connected to the end of the tightening screw 5 facing the angle steel placement seat 2. A handwheel is fixed to the end of the tightening screw 5 facing away from the angle steel placement seat 2.

[0029] Multiple tightening screws 5 are provided and are evenly distributed along the extension direction parallel to the angle steel placement seat 2.

[0030] The positioning plate 6 is fixedly and swayably connected to the top surface of the angle steel placement seat 2 via a swing rod 7, and the swing rod 7 is parallel to the positioning plate 6.

[0031] One end of the swing rod 7 facing the clamping device is oscillatingly connected to the angle steel placement seat 2 via the upright A8. The other end of the swing rod 7 is fixedly connected to the angle steel placement seat 2 via the upright B10. The positioning plate 6 is fixedly connected to the bottom of the swing rod 7. The bottom edge of the positioning plate 6 is lower than the top surface of the angle steel 17 to be bent placed on the angle steel placement seat 2, and the height of the top edge of the positioning plate 6 is higher than or equal to the top surface of the angle steel 17 to be bent on the angle steel placement seat 2. The upright A8 and the upright B10 are perpendicular to the top surface of the angle steel placement seat 2, and the thickness of the positioning plate 6 matches the diameter of the upright A8.

[0032] The upright A8 is fixed at the end of the angle steel placement seat 2 and at the prism position facing the side of the clamping device.

[0033] When the angle steel 17 to be bent is fixed by the clamping device and the angle steel placing seat 2, the notch 18 is located at the end of the side plate of the angle steel 17 to be bent in contact with the clamping device and is in limiting contact with the vertical rod A8.

[0034] The vertical rod A8 protrudes from the end of the angle steel placing seat 2.

[0035] The bottom end of the vertical rod B10 passes through the arc-shaped slot hole 9 provided on the top surface of the angle steel placing seat 2, the vertical rod B10 moves along the arc-shaped slot hole 9, and the portion of the bottom end of the vertical rod B10 corresponding to the position of the arc-shaped slot hole 9 is provided with a thread and is locked and fixed with the top surface of the angle steel placing seat 2 by the locking nut B13, and the arc-shaped slot hole 9 is provided through the end of the angle steel placing seat 2 where the vertical rod A8 is located.

[0036] The middle part of the swing rod 7 is provided with a strip-shaped through hole 11 extending along the swing rod 7, the strip-shaped through hole 11 passes through the swing rod 7 up and down, the positioning vertical plate 6 moves along the strip-shaped through hole 11, and the top surface of the positioning vertical plate 6 is provided with a connecting screw rod B14 at each end upward, the connecting screw rod B14 passes through the strip-shaped through hole 11 upward and is locked and fixed with the swing rod 7 by the locking nut C15.

[0037] The top end of the vertical rod A8 is coaxially provided with a connecting rod A, the swing rod 7 is provided with a matching connecting through hole corresponding to the connecting rod A, the connecting through hole of the swing rod 7 is sleeved on the connecting rod A, and the swing rod 7 and the vertical rod A8 are axially limited and fixed by the locking nut A12.

[0038] The width of the swing rod 7 is equal to the diameter of the vertical rod A8 and the width of the positioning vertical plate 6.

[0039] As shown in Figure 2 , Figure 4 and Figure 5 , when the present application is used, the side plate of the angle steel 17 to be bent is cut according to the bending angle in advance, and a notch 18 is cut out, the notch 18 is in a triangular structure, one side groove wall of the notch 18 is perpendicular to the other side plate of the angle steel 17 to be bent, the other side groove wall is inclined to form an inclined groove wall 19 between the other side plate of the angle steel 17 to be bent, and the two side groove walls of the notch 18 respectively extend to the other side plate of the angle steel 17 to be bent, and the spacing between the two side groove walls of the notch 18 and the other side plate of the angle steel 17 to be bent matches the diameter of the vertical rod A8.

[0040] Then the locking nut C15 is loosened, the position of the positioning vertical plate 6 corresponding to the swing lever 7 is adjusted according to the width of the side plate of the angle steel 17 to be bent, so that the distance between the side edge of the positioning vertical plate 6 away from the vertical rod A8 is slightly smaller than the width of the side plate of the angle steel 17 to be bent, and then the locking nut C15 is tightened to fix the positioning vertical plate 6 and the swing lever 7; then the locking nut B13 is loosened, and the swing lever 7 is swung away from the clamping device around the vertical rod A8 to the corresponding end of the angle steel placing seat 2, and then the tightening screw 5 is moved away from the angle steel placing seat 2 by rotating the hand wheel until the distance between the pad plate 3 and the corresponding side plate of the angle steel placing seat 2 is greater than the thickness of the side plate of the angle steel 17 to be bent, and then the angle steel 17 to be bent is placed on the angle steel placing seat 2, so that the notch 18 provided on the top groove wall of the angle steel 17 to be bent is located in the position of the side plate of the angle steel 17 to be bent contacting the clamping device and the vertical rod A8, the opening direction of the notch 18 is away from the clamping device, and the inclined groove wall 19 of the notch 18 is located in the swing range of the swing lever 7; then the tightening screw 5 is moved towards the angle steel placing seat 2 by rotating the hand wheel until the corresponding side plate of the angle steel 17 to be bent is clamped and fixed to the corresponding side wall of the angle steel placing seat 2 by the pad plate 3; then the swing lever 7 is swung around the vertical rod A8 until the positioning vertical plate 6 is in contact with the inclined groove wall 19, and then the locking nut B13 is locked to complete the clamping and fixing of the angle steel 17 to be bent.

[0041] When the angle steel 17 to be bent is bent, the part of the side plate of the angle steel 17 to be bent contacting the pad plate 3 at the position corresponding to the vertical plate A8 is heated by the heating device, when the position is in a red-hot state, the free end of the angle steel 17 to be bent outside the angle steel placing seat 2 is bent around the vertical rod A8 by the pressure equipment until the other groove wall of the notch 18 is also in contact with the positioning vertical plate 6, the bending of the angle steel 17 to be bent is stopped, and the state of the angle steel 17 is maintained, at this time, the two side walls of the notch 18 are parallel.

[0042] Finally, the tightening screw 5 is moved away from the angle steel placing seat 2 by rotating the hand wheel, so that the pad plate 3 no longer clamps and fixes the corresponding side plate of the angle steel 17 to be bent to the corresponding side wall of the angle steel placing seat 2, at this time, the angle steel 17 to be bent is directly lifted up and separated from the angle steel placing seat 2.

[0043] The notch 18 provided on the angle steel 17 becomes a strip structure after bending, and the notch 18 becomes a strip structure can be filled and fixed by surfacing, and the side plate provided with the notch 18 is also connected and fixed.

Claims

1. A bending fixture for large-size angle steel of power transmission towers, characterized in that: The device includes a bending base (1), and angle steel placement seats (2) are provided at the four corners of the top surface of the bending base (1). A clamping device is provided on one side of the top surface of the bending base (1) to clamp and fix the angle steel (17) to be bent to the angle steel placement seat (2). The top surface of the angle steel placement seat (2) is perpendicular to the end face facing the clamping device. The side plate of one side of the angle steel (17) to be bent, which is fixed to the angle steel placement seat (2) by the clamping device, is in contact with the top surface of the angle steel placement seat (2), and the side plate of the other side is clamped and fixed to the end face of the angle steel placement seat (2) facing the clamping device by the clamping device. A positioning plate (6) is provided at one end of the top surface of the angle steel placement seat (2). The positioning plate (6) is in contact with the inclined groove wall (19) of the groove (18) provided on the corresponding side plate of the angle steel (17) to be bent.

2. The bending fixture for large-size angle steel of transmission towers as described in claim 1, characterized in that: The clamping device includes a connecting seat (4) fixed to the top surface of the bending base (1), the connecting seat (4) is threadedly connected to a tightening screw (5), the end of the tightening screw (5) facing the angle steel placement seat (2) is coaxially rotatably connected to a pad (3), and the end of the tightening screw (5) facing away from the angle steel placement seat (2) is fixed with a handwheel.

3. The bending fixture for large-size angle steel of transmission towers as described in claim 2, characterized in that: Multiple tightening screws (5) are provided and are evenly distributed along the extension direction parallel to the angle steel placement seat (2).

4. The bending fixture for large-size angle steel of transmission towers as described in claim 1, characterized in that: The positioning plate (6) is fixedly and oscillatingly connected to the top surface of the angle steel placement seat (2) by means of a swing rod (7), and the swing rod (7) is parallel to the positioning plate (6).

5. The bending fixture for large-size angle steel of transmission towers as described in claim 4, characterized in that: The swing rod (7) is oscillatingly connected to the angle steel placement seat (2) via the upright rod A (8) at one end facing the clamping device. The other end of the swing rod (7) is fixedly connected to the angle steel placement seat (2) via the upright rod B (10). The positioning plate (6) is fixedly connected to the bottom of the swing rod (7). The bottom edge of the positioning plate (6) is lower than the top surface of the angle steel (17) to be bent placed on the angle steel placement seat (2). The top edge of the positioning plate (6) is higher than or equal to the top surface of the angle steel (17) to be bent on the angle steel placement seat (2). The upright rod A (8) and the upright rod B (10) are perpendicular to the top surface of the angle steel placement seat (2). The thickness of the positioning plate (6) matches the diameter of the upright rod A (8).

6. The bending fixture for large-size angle steel of transmission towers as described in claim 5, characterized in that: The upright A (8) is fixed at the end of the angle steel placement seat (2) and at the prism position facing the side of the clamping device.

7. The bending fixture for large-size angle steel of transmission towers as described in claim 6, characterized in that: When the angle steel (17) to be bent is fixed to the angle steel placement seat (2) by the clamping device, the slot (18) is located at the end of the side plate of the clamping device of the angle steel (17) to be bent and is in limited contact with the upright A (8).

8. The bending fixture for large-size angle steel of transmission towers as described in claim 6, characterized in that: The upright A (8) protrudes from the end where the angle steel placement seat (2) is located.

9. The bending fixture for large-size angle steel of transmission towers as described in claim 5, characterized in that: The bottom end of the upright B (10) passes downward through the arc-shaped slot (9) on the top surface of the angle steel placement seat (2). The upright B (10) moves along the arc-shaped slot (9) and the part of the bottom end of the upright B (10) corresponding to the position of the arc-shaped slot (9) is threaded and locked to the top surface of the angle steel placement seat (2) by locking nut B (13). The arc-shaped slot (9) passes through the end of the top surface of the angle steel placement seat (2) where the upright A (8) is located.

10. The bending fixture for large-size angle steel of transmission towers as described in claim 4, characterized in that: The swing rod (7) has a strip-shaped through hole (11) in the middle, which extends along the direction of the swing rod (7). The strip-shaped through hole (11) passes through the swing rod (7) from top to bottom. The positioning plate (6) moves along the strip-shaped through hole (11). The top surfaces of the positioning plate (6) are provided with connecting screws B (14) at both ends. The connecting screws B (14) pass through the strip-shaped through hole (11) and are locked and fixed to the swing rod (7) by locking nuts C (15).

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