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CN-121988964-A - Welding positioning device for door frame of wind power generation tower

CN121988964ACN 121988964 ACN121988964 ACN 121988964ACN-121988964-A

Abstract

The invention relates to the technical field of welding clamps, and discloses a welding positioning device for a door frame of a wind power generation tower, which comprises a tower inner chord ejector rod, frame pull rods and threaded pull rods, wherein the length of the tower inner chord ejector rod is smaller than Lb and larger than La, la and Lb are respectively the transverse length and the longitudinal length of a frame channel, the number of the frame pull rods is two, the two frame pull rods are connected with the tower inner chord ejector rod through the threaded pull rods, the frame pull rods are rotationally connected with the threaded pull rods, and the threaded pull rods are in threaded connection with the tower inner chord ejector rod.

Inventors

  • WANG GUOLIANG
  • LI SHUWEN

Assignees

  • 青岛金桥钢结构有限公司

Dates

Publication Date
20260508
Application Date
20260409

Claims (8)

  1. 1. The welding and positioning device for the door frame of the wind power generation tower is characterized by comprising a tower inner chord ejector rod (1), a frame pull rod (2) and a thread pull rod (3), wherein the length of the tower inner chord ejector rod (1) is smaller than Lb and larger than La, and La and Lb are respectively the transverse length and the longitudinal length of a frame channel; the number of the frame pull rods (2) is two, the two frame pull rods (2) are connected with the tower inner chord push rod (1) through the threaded pull rods (3), the frame pull rods (2) are rotationally connected with the threaded pull rods (3), and the threaded pull rods (3) are in threaded connection with the tower inner chord push rod (1); The frame pull rod (2) is provided with an L-shaped clamping surface which is in contact with the inner side wall of the frame and the end face of the frame, the distance between two perpendicular parallel surfaces of the L-shaped clamping surface is equal to Lb, the maximum distance between two horizontal clamping surfaces of the L-shaped clamping surface, which are positioned at the same horizontal height, and the tower inner chord ejector rod (1) is greater than Lc, and Lc is the distance between the tower inner chord ejector rod (1) and the end face of the frame when the tower inner chord ejector rod (1) is in contact with the tower body.
  2. 2. The welding and positioning device for the door frame of the wind power generation tower according to claim 1 is characterized in that a threaded cylinder (12) is fixedly connected to the center of a chord ejector rod (1) in the tower, a threaded pull rod (3) is in threaded connection with the threaded cylinder (12), and a rotary holding rod is fixedly connected to the end part of the threaded pull rod (3).
  3. 3. The welding and positioning device for the door frame of the wind power generation tower according to claim 2 is characterized in that one end, far away from a chord ejector rod (1) in the tower, of the threaded pull rod (3) is rotatably connected with a rotating seat (4), the axis of the rotating seat (4) and the axis of the threaded pull rod (3) are positioned on the same straight line, and the two frame pull rods (2) are rotated on the circumferential side of the rotating seat (4) in a staggered mode through lugs.
  4. 4. The welding and positioning device for the door frame of the wind power generation tower according to claim 1, wherein a plurality of uniformly distributed contact balls (21) are rotatably connected to the contact part of the L-shaped clamping surface of the frame pull rod (2) and the frame, and the distance between two perpendicular parallel surfaces of the L-shaped clamping surface is smaller than Lb.
  5. 5. The welding and positioning device for the door frame of the wind power generation tower according to claim 1 is characterized in that contact wheels (11) are rotatably connected to two ends of the tower inner chord ejector rod (1) and one side, close to the tower body, of the tower inner chord ejector rod, and arc surfaces consistent with the radian of the tower body are formed on the circumference sides of the contact wheels (11).
  6. 6. The welding and positioning device for the door frame of the wind power generation tower according to claim 1, wherein the length of the tower inner chord ejector rod (1) is required to meet the requirement that the chord length arch height of the tower body is larger than the inner extension height ‌ of the frame.
  7. 7. The welding and positioning device for the door frame of the wind power generation tower according to claim 1 is characterized in that the length of the horizontal clamping surface of the frame pull rod (2) is smaller than the width of the end face of the frame.
  8. 8. The method for using a welding positioning device for a door frame of a wind power generation tower according to any one of claims 1 to 7, wherein: Inserting a frame into a tower body groove, adjusting a tower inner chord ejector rod (1) to be vertical, adjusting a frame pull rod (2) to be horizontal, directly enabling the tower inner chord ejector rod (1) to enter the tower body through the frame, rotating the tower inner chord ejector rod (1) to be horizontal, driving the frame pull rod (2) to be attached to the frame by centripetal pulling force of a body Shi Jiada of the tower inner chord ejector rod (1), rotating a thread pull rod (3), enabling threads of the thread pull rod (3) to act on a thread cylinder (12), driving the tower inner chord ejector rod (1) to move towards the frame pull rod (2) by the thread cylinder (12), until a contact wheel (11) is attached to the tower body, repeating the operation, installing another positioning device, loosening one of the tower inner chord ejector rods (1), driving the tower inner chord ejector rod (1) to move through the contact wheel (11), and enabling an interference area to be exposed and welding; The method B comprises the steps of inserting a frame into a tower body groove, synchronously adjusting the tower inner chord ejector rod (1) and the frame pull rod (2) to be vertical until the frame enters between the tower inner chord ejector rod (1) and the frame pull rod (2), adjusting the tower inner chord ejector rod (1) and the frame pull rod (2) to be horizontal, enabling the contact balls (21) and the frame to slide relatively, and locking the tower inner chord ejector rod (1) and the frame pull rod (2) according to the mode of the method A.

Description

Welding positioning device for door frame of wind power generation tower Technical Field The invention relates to the technical field of welding clamps, in particular to a welding positioning device for a door frame of a wind power generation tower. Background The wind power generation tower body is a hollow pipeline, and a control device or a climbing structure is arranged in the pipeline, so that a bin gate structure is required to be arranged at the wind power generation tower body for sealing an inner space in order to avoid non-professional staff entering. In order to ensure stability, the wind power generation tower is conical in shape, the vertical projection area of the bottom is maximum, and the cabin door needs to be installed at the bottom. Because the volume of the bottom of the tower body is overlarge, the processing is difficult, and in order to simplify the processing flow, part of the wall surface is cut off in a cutting mode after the bottom of the tower body is processed, so that a groove body structure is formed. If the packaging door is directly arranged outside the groove body structure, the shape of the door body needs to be attached to the tower body, if the tower body is cylindrical, the shape of the door is arc-shaped, the requirement on the processing technology of the door is high, and the sealing effect can be guaranteed only by attaching the door shape to the tower body. In order to simplify the structure, a cross operation mode is adopted at present, the door and the frame are used as a module to be processed in other working procedures, and the tower body is independently processed. During assembly, the frame is inserted into the groove body, and the frame and the groove body are connected through a welding process, so that the strength is high and the sealing performance is good. In order to improve the convenience of welding, the workman can stand the construction under the tower body vertical state, reduces the construction degree of difficulty, improves the construction travelling comfort. However, under standing conditions, if the interference fit or the fit tolerance of the frame and the groove body is small, the assembly is difficult, and the stability can be ensured without adding a structure during welding. If the fit tolerance of the frame and the groove body is large, the frame is easy to shake, the outer wall surface and the inner wall surface of the tower body are smooth and have radians, and it is important how to arrange the clamp without influencing the welding route. Disclosure of Invention The invention aims to provide a welding and positioning device for a door frame of a wind power generation tower, which adopts a chord positioning mode to reduce the difficulty of the device penetrating through a tower body groove, improve the convenience of operation, simultaneously utilize the characteristic of high chord height to reduce the interference influence of a chord top rod in the tower on an inner welding line, and the whole device can be freely adjusted according to requirements, adopts a frame body with large tolerance and a groove assembly clearance, reduces the assembly difficulty and simultaneously realizes fixation. The device can freely select a welding area, is simple and portable in structure, low in application cost and high in structural stability, is applicable to the machining field, and solves the problem in the background technology. In order to achieve the above purpose, the present invention provides the following technical solutions: The welding and positioning device for the door frame of the wind power generation tower comprises a tower inner chord ejector rod, a frame pull rod and a threaded pull rod, wherein the length of the tower inner chord ejector rod is smaller than Lb and larger than La, and La and Lb are respectively the transverse length and the longitudinal length of a frame channel; the number of the frame pull rods is two, the two frame pull rods are connected with the tower inner chord push rod through the threaded pull rods, the frame pull rods are rotationally connected with the threaded pull rods, and the threaded pull rods are in threaded connection with the tower inner chord push rod; The frame pull rod is provided with an L-shaped clamping surface which is in contact with the inner side wall of the frame and the end face of the frame, the distance between two perpendicular parallel surfaces of the L-shaped clamping surface is equal to Lb, the maximum distance between two horizontal clamping surfaces of the L-shaped clamping surface, which are positioned at the same horizontal height, and the inner chord ejector rod of the tower is larger than Lc, and Lc is the distance between the inner chord ejector rod of the tower and the end face of the frame when the inner chord ejector rod of the tower is in contact with the tower body. As a still further scheme of the invention, the center of the tower inner chord ejector rod is fi