Multi-directional straightening machine for main limbs of extra-high voltage iron tower

Abstract

The application provides a multi-directional straightening machine for a main limb of an extra-high voltage iron tower, and relates to the technical field of metal profile correction. The machine comprises a work frame, a corrector for straightening the edge wings of the main limb, a straightener for straightening the corner of the main limb, and a self-adaptive supporting and conveying component for controlling the feeding of the main limb. The corrector can synchronously apply vertical pressing force and horizontal pulling force to the profile, which can straighten small-angle bent edge wings and avoid the overlapping or breaking of large-angle bent edge wings due to simple extrusion, effectively improving the efficiency and quality of straightening and reducing the rejection rate of angle steel. The straightener comprises straightening blocks and straightening plates, and the straightening blocks are equipped with detachable blocks, covering two structures of circular arc shape and right angle shape in multiple sizes, which can meet the straightening needs of different forms of main limb corners. The machine aims to solve the technical problems of deformation due to self-weight sagging during the straightening of the main limb of the extra-high voltage iron tower, difficulty in adapting to angle steel of multiple sizes, and easy secondary damage, and reduces manual intervention during the straightening process.

Description

Technical Field

[0001] This invention relates to the technical field of metal profile straightening, and particularly to a multi-directional straightening machine for the main body of an ultra-high voltage transmission tower. Background Technology

[0002] Ultra-high voltage (UHV) transmission towers are key structures supporting UHV transmission lines. The main members of the UHV tower are the main vertical load-bearing components of the tower body, bearing the combined forces of the tower body's own weight, conductor tension, wind load, ice load, and seismic action. They are the core components for the overall rigidity and stability of the tower body, therefore, their structural strength and precision requirements are extremely high.

[0003] Existing ultra-high voltage power transmission towers mostly use large-diameter angle steel for their main components. During the rolling, transportation, and welding processes, the angle steel inevitably undergoes complex multidimensional deformations, including longitudinal bending, in-plane bending of the flange (sickle bend), and twisting. These deformations severely affect the assembly accuracy and load-bearing capacity of the tower.

[0004] Therefore, Chinese Patent CN206351191U discloses a flat-press angle steel straightening machine, which includes a worktable, a support leg frame fixedly installed at the bottom of the worktable, an active rotary mechanism fixedly installed on the top left side of the worktable, a driven rotary mechanism fixedly installed on the top right side of the worktable, and movable support columns evenly installed on the top of the worktable, with the movable support columns located between the active rotary mechanism and the driven rotary mechanism. This flat-press angle steel straightening machine uses a photoelectric detector to detect the degree and position of bending of the workpiece, ensuring precise stamping. The use of movable support columns prevents the bending angle of the angle steel from increasing due to the stamping of the stamping plate, thus improving the quality and stamping effect of the angle steel and preventing secondary damage to the angle steel.

[0005] However, the above-mentioned straightening machine still has some shortcomings in actual use:

[0006] 1. In the above-mentioned prior art, the flat pressing method is used to straighten the profile, that is, a single vertical extrusion structure is used. It can only handle profiles with small-angle bends. When the bending angle of the profile edge is large, the simple vertical extrusion will cause the bent part to be compressed and overlapped. Not only will it fail to straighten, but it will also cause secondary damage or even breakage of the edge. It is difficult to adapt to the straightening requirements of edge with different bending states.

[0007] 2. Secondly, the existing corner straightening equipment has poor versatility. Most of the existing straightening blocks are fixed structures, which cannot be adapted to different specifications of profiles with rounded or right-angled inner corners. Furthermore, it is difficult to simultaneously straighten the inner and outer corners of the profiles at the same time, requiring the replacement of different tooling, which is cumbersome and inefficient.

[0008] Therefore, based on the above-stated viewpoints, there is still room for improvement in existing straightening machines. Summary of the Invention

[0009] To address the aforementioned problems, this invention provides a multi-directional straightening machine for the main members of ultra-high voltage transmission towers, employing the following technical solution:

[0010] A multi-directional straightening machine for the main members of an ultra-high voltage (UHV) transmission tower includes: a work frame, the upper end of which forms a processing area for straightening the main members of the UHV transmission tower, and the processing area at the upper end of the work frame is equipped with a conveying device for controlling the movement of the main members of the UHV transmission tower. The processing area of ​​the work frame also includes:

[0011] Correctors used for straightening the side wings of the main body of ultra-high voltage transmission towers;

[0012] Straightener used for straightening the rotation angle of the main members of ultra-high voltage transmission towers;

[0013] The straightener includes a mounting plate on the work frame, a No. 2 pressing plate that squeezes the side wings of the main body of the UHV tower, a No. 1 pressing plate that works with the No. 2 pressing plate to straighten the side wings of the main body of the UHV tower, two sets of guide columns on one side of the mounting plate, and a guide block with an inclined sliding groove on the other side of the mounting plate.

[0014] A vertically movable pressing block is slidably installed on the guide column. The second pressing plate slides along the width direction of the pressing block and is located at its bottom. The first pressing plate is slidably located in the inclined groove opened on the inclined surface of the guide block.

[0015] Furthermore, the No. 1 pressing plate cooperates with the No. 2 pressing plate to apply opposing or opposite forces to the side wings of the main body of the ultra-high voltage tower located in the middle.

[0016] Furthermore, the straightener includes a C-shaped frame that is slidably mounted on the work frame. The C-shaped frame is provided with a straightening plate for pressing the outer side of the corner of the main branch of the UHV tower and a straightening block for pressing the inner side of the corner of the main branch of the UHV tower.

[0017] The back of the straightening block is connected to several inclined straightening columns. The straightening columns slide through the U-shaped frame and are fitted with straightening tension springs. One side of the straightening tension spring is connected to the U-shaped frame and the other side is located on the straightening block.

[0018] The straightening block of the straightener is also equipped with an electric push rod that is mounted on the C-shaped frame to provide power.

[0019] Furthermore, the orthosis is provided in two sets, including orthosis distributed horizontally to straighten horizontal wings and orthosis distributed vertically to straighten vertical wings, and the two sets of orthosis work alternately.

[0020] Furthermore, a passive wedge block is provided on the side of the first pressing plate facing away from the guide block, and an active wedge block is provided on the pressing block to match the inclined surface of the passive wedge block;

[0021] A fixed plate is fixed on the mounting plate. An auxiliary rod is provided on one side of the second pressing plate. One end of the auxiliary rod extends to the fixed plate and is provided with a control post. A control groove is provided on the fixed plate for the control post to slide and guide the second pressing plate to move horizontally. A reset tension spring is provided between the second pressing plate and the pressing block.

[0022] Furthermore, a limiting post parallel to the inclined surface of the guide block is installed on the back side of the first pressing plate. The side of the limiting post away from the first pressing plate slides through the mounting plate and extends outward. A limiting tension spring is sleeved on the limiting post. One end of the limiting tension spring is connected to the first pressing plate, and the other end is connected to the mounting plate.

[0023] Furthermore, a support spring is fitted onto the guide post, with one side of the support spring connected to the mounting plate and the other side connected to the pressing block.

[0024] Furthermore, the straightening block includes a fixing block connected to the straightening column and a disassembly block that can be detached and inserted into the fixing block. The working surface of the disassembly block is a multi-sized arc or right angle shape.

[0025] Furthermore, the work frame is also equipped with a linkage mechanism for driving the two sets of correctors. The linkage mechanism includes an active control shaft on the work frame, and the active control shaft is equipped with two sets of cams corresponding to the two sets of correctors respectively. The installation angles of the two sets of cams are staggered.

[0026] The work frame is also equipped with a control motor, the output end of which is connected to the active control shaft, and a reducer is provided between the two.

[0027] Furthermore, the contact ends of the No. 1 and No. 2 pressing plates with the main body of the UHV tower are equipped with wear-resistant coatings.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] I. The straightener of the present invention forms a dual-pressing collaborative design through the cooperation of the No. 1 pressing plate and the No. 2 pressing plate; it can simultaneously apply the vertical extrusion force and the horizontal tension force, which can not only accurately straighten the small-angle bending of the angle steel, but also avoid the overlapping or breakage of the large-angle bending of the angle steel due to the single extrusion force, which greatly improves the straightening effectiveness and ensures the reliability of the straightening quality.

[0030] Second, the straightener of the present invention can adapt to the straightening requirements of side wings with different bending states without changing the tooling, which greatly improves the applicability of the device. At the same time, the two sets of straighteners in this application perform alternating straightening of the main body (angle steel) of the UHV tower, which greatly ensures the straightening efficiency.

[0031] Third, the straightening device of the present invention includes a straightening plate and a straightening block. The straightening plate and the straightening block respectively correspond to the outer and inner corners of the angle steel, realizing the synchronous straightening of the inner and outer corners of the angle steel. It can complete the straightening of the angle steel corner in one step without the need for step-by-step operation, effectively improving its processing efficiency.

[0032] Furthermore, the straightening block is designed as a combination of fixed and detachable blocks. The detachable blocks come in both arc and right-angle shapes, and can be quickly replaced according to the actual shape of the inner angle of the angle steel to meet the corner straightening needs of angle steel of different specifications. Attached Figure Description

[0033] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0034] Figure 1 This is a schematic diagram of the main structure of the multi-directional straightening machine for the main body of the ultra-high voltage iron tower of the present invention.

[0035] Figure 2 This is a schematic diagram of the structure between the main members (angle steel) of different ultra-high voltage towers according to the present invention.

[0036] Figure 3 This is a second-view structural diagram of the main body of the invention.

[0037] Figure 4 This is a schematic diagram of the structure between the straightener for straightening the horizontal side wings of the main limb (angle steel) and the straightener for straightening the vertical side wings of the main limb (angle steel) according to the present invention.

[0038] Figure 5 This is a schematic diagram of the first-view structure of the present invention for controlling the pressing of the second pressing plate and the first pressing plate.

[0039] Figure 6 This is a schematic diagram of the second perspective structure of the present invention for controlling the pressing of the second pressing plate and the first pressing plate.

[0040] Figure 7 This is a planar schematic diagram of the corrector of the present invention.

[0041] Figure 8 This is a schematic diagram of the movement trajectory of the No. 1 pressing plate of the present invention.

[0042] Figure 9 This is a schematic diagram of the movement trajectory of the No. 2 pressing plate of the present invention.

[0043] Figure 10 This is a schematic diagram of the structure between the two sets of correctors and the linkage mechanism of the present invention.

[0044] Figure 11 This is a schematic diagram of the straightener of the present invention.

[0045] Figure 12 This is a planar schematic diagram of the straightener of the present invention.

[0046] Figure 13 This is a schematic diagram of the structure between the fixing block and the disassembly block of the present invention.

[0047] Explanation of reference numerals in the attached figures:

[0048] 10. Angle steel; 100. Side wing; 101. Corner; 1. Work frame; 2. Straightener; 3. Aligner; 20. Mounting plate; 21. No. 2 pressing plate; 22. No. 1 pressing plate; 23. Guide column; 24. Guide block; 25. Pressing block; 26. Inclined slide; 30. C-shaped frame; 31. Straightening plate; 32. Straightening block; 33. Straightening column; 34. Straightening tension spring; 35. Electric push rod; 20 0. Passive wedge block; 201. Active wedge block; 202. Fixing plate; 203. Auxiliary rod; 204. Control column; 205. Control groove; 206. Reset spring; 220. Limiting column; 221. Limiting spring; 230. Support spring; 320. Fixing block; 321. Disassembly block; 5. Linkage mechanism; 50. Active control shaft; 51. Cam; 52. Control motor; 53. Reducer. Detailed Implementation

[0049] The following combination Figures 1-13 This application will be described in further detail.

[0050] This application proposes a multi-directional straightening machine for the main members of ultra-high voltage (UHV) transmission towers, aiming to solve the technical problems of sagging and deformation due to self-weight during the straightening of the main members of UHV transmission towers, difficulty in adapting to angle steel of various sizes, and easy secondary damage, thereby reducing manual intervention in the straightening process. Specifically:

[0051] Firstly, ultra-high voltage (UHV) transmission towers are generally quite tall, therefore the main members (angle steel 10) used in these towers are typically long, large in size, and heavy. When straightening the angle steel 10, it needs to be moved onto the work frame 1. However, the work frame 1 is quite tall, so external equipment such as cranes are required to transport the angle steel 10 onto the work frame 1 to prevent it from sagging naturally.

[0052] Reference Figure 1 As shown, this embodiment discloses a multi-directional straightening machine for the main body of an ultra-high voltage (UHV) tower, which includes a work frame 1 composed of a metal frame and a metal plate. The upper end of the work frame 1 is a processing area for processing the main body of the UHV tower. The main body of the UHV tower enters from one side of the work frame 1, is straightened by the straightener 2 on the work frame 1, and then moves out from the other side of the work frame 1.

[0053] Two sets of correctors 2 and one set of straighteners 3 are sequentially arranged on the upper end face of the work frame 1 along the conveying direction of the main body of the UHV tower.

[0054] It should be noted that, referring to Figure 2 As shown, the main members of the ultra-high voltage transmission tower are primarily composed of angle steel 10. Angle steel 10, as the name suggests, is a long strip of steel with an L-shaped cross-section. Furthermore, angle steel 10 is an equilateral angle steel 10. The two sides of angle steel 10 are called flanges 100, and the middle part is called the corner 101.

[0055] The main body of the ultra-high voltage tower is composed of angle steel 10. Several auxiliary rods 203 are installed on the angle steel 10 by riveting, welding and other methods to form the ultra-high voltage tower.

[0056] The straightener 2 is mainly used to straighten the edge 100 of the angle steel 10, so as to prevent the edge 100 of the angle steel 10 from curling or shifting inward (outward).

[0057] The straightener 3 is mainly used to straighten the corner 101 of the angle steel 10 to prevent the corner 101 of the angle steel 10 from deforming.

[0058] After the angle steel 10 is conveyed to the working area of ​​the work frame 1, the angle steel 10 is controlled by the conveying equipment on the work frame 1 to move along the length direction of the work frame 1. During this process, the angle steel 10 first comes into contact with the straightener 2, and then the two sets of straighteners 2 straighten the edge 100 of the angle steel 10, as shown below:

[0059] The work frame 1 is equipped with two sets of straighteners 2, one set of straighteners 2 being horizontally distributed and corresponding to the side wings 100 horizontally distributed on one side of the angle steel 10.

[0060] The straighteners are straightened; while another set of straighteners 2 are vertically distributed and straighten the side wings 100 that are vertically distributed on one side of the angle steel 10.

[0061] Reference Figure 3 and Figure 4 As shown, taking the horizontally distributed straightener 2 as an example: the straightener 2 includes a mounting plate 20 fixedly connected to the work frame 1 by bolts. Two sets of guide columns 23 are installed on one side of the upper end of the mounting plate 20, and a trapezoidal guide block 24 is installed on the other side of the upper end of the mounting plate 20. A pressing block 25 is slidably installed on the guide column 23, which slides along the height direction and straightens the side wing 100 of the angle steel 10. By pressing the side wing 100 with the pressing block 25, the side wing 100 that has warped or curled can be straightened. A first pressing plate 22 is slidably set on the trapezoidal inclined surface of the guide block 24 to cooperate with the pressing block 25 to accurately straighten the side wing 100 and prevent the straightening direction of the curled side wing 100 from being reversed.

[0062] Reference Figure 5 , Figure 6 and Figure 7The diagram shows the structure of the first pressing plate 22 and the second pressing plate 21 aligned with the angle steel 10. The guide block 24 also has a slanted sliding groove 26 for the first pressing plate 22 to slide horizontally. Two sets of symmetrical limiting posts 220 are installed on the back side of the first pressing plate 22. The side of the limiting post 220 away from the first pressing plate 22 slides through the mounting plate 20 and extends outwards. A limiting spring 221 is fitted on the limiting post 220, with one end connected to the first pressing plate 22 and the other end connected to the mounting plate 20. Furthermore, a parallelogram-shaped passive wedge block 200 is installed on the side of the first pressing plate 22 away from the guide block 24.

[0063] In the initial state, the limiting tension spring 221 pulls the first pressing plate 22, bringing it closer to the mounting plate 20.

[0064] Let's look at 7 and... Figure 8 As shown, an active wedge block 201 is installed on one side of the pressing block 25. The inclined surface of the active wedge block 201 matches the inclined surface of the passive wedge block 200. A second pressing plate 21 is slidably installed on the bottom of the pressing block 25 along its width direction. An auxiliary rod 203 is installed on one side of the second pressing plate 21, and the auxiliary rod 203 extends outward to the fixing plate 202. Vertically distributed fixing plates 202 are installed on the mounting plate 20. The fixing plate 202 has a control groove 205 that controls the second pressing plate 21 to move horizontally along the pressing block 25 via the auxiliary rod 203. A control post 204 is fixed to one end of the auxiliary rod 203 near the fixing plate 202, and the control post 204 is slidably disposed in the control groove 205 on the fixing plate 202. A reset spring 206 connects the second pressing plate 21 and the pressing block 25.

[0065] The reset spring 206 exerts a certain spring force on the second pressing plate 21, causing the second pressing plate 21 to tend to move away from the fixed plate 202 in its initial state.

[0066] It should be noted that the control groove 205 consists of two grooves at different angles, one of which is vertically distributed and the other is inclined from the inside to the outside along the height direction of the fixed plate 202.

[0067] In specific implementation, taking the horizontally distributed corrector 2 as an example: the pressing block 25 is pressed by an external force, causing it to move downwards along the guide post 23 towards the side wing 100 of the angle steel 10. The second pressing plate 21, which is slidably installed at the bottom of the pressing block 25, also moves downwards simultaneously. The auxiliary rod 203 and the control post 204 installed on one side of the second pressing plate 21 also move downwards simultaneously. However, the control post 204 is slidably installed in the control groove 205 on the fixed plate 202, and the control groove 205 has a guiding effect on it. Therefore, while the control post 204 moves downwards, it also needs to slide along the control groove 205. The inclined section of the control groove 205 will drive the second pressing plate 21 to slide horizontally along the pressing block 25 through the control post 204.

[0068] At the same time, when the pressing block 25 presses down, the active wedge block 201 presses the passive wedge block 200. The passive wedge block 200 controls the movement of the first pressing plate 22 due to the inclined surface. The first pressing plate 22 is restricted by the guide block 24 of the trapezoidal structure, so that it can only slide along the inclined groove of the guide block 24. Therefore, when the second pressing plate 21 moves down, the first pressing plate 22 moves up synchronously. The pressing and straightening of the side wing 100 of the angle steel 10 is achieved through the cooperation of the first pressing plate 22 and the second pressing plate 21.

[0069] However, it should be noted that existing traditional straightening equipment usually uses a straight up-and-down motion trajectory to compress and straighten the side wings 100 of the angle steel 10. This method is quite common, but it has certain drawbacks. When the side wings 100 of the angle steel 10 bend at too large an angle, and the side wings 100 of the angle steel 10 bend and curl, the straight up-and-down compression method will directly compress the bent part of the side wings 100 of the angle steel 10, causing it to bend further and overlap with the side wings 100, thus failing to achieve the straightening effect and instead causing damage. Therefore, the straightener 2 in this embodiment can solve the above problems.

[0070] When the first pressing plate 22 and the second pressing plate 21 approach each other to compress and straighten the middle angle steel 10 side wing 100, the first pressing plate 22 and the second pressing plate 21 also tend to move away from each other. When the second pressing plate 21 contacts the bent part of the side wing 100, it can apply an outward pulling force to it, bending the bent part outward. At this time, the bent part is subjected to two forces: a downward pressing force and a constantly outward pulling force. Through the action of the two forces, the bent part of the side wing 100 can be ensured to quickly return to its original shape.

[0071] When a portion of the edge 100 of the angle steel 10 bends due to compression and collision during transportation, if the bending angle is less than 90 degrees, applying a vertical compressive force directly can straighten the edge 100. However, if the bending angle is greater than or equal to 90 degrees, applying a vertical compressive force directly will cause the bent portion to bend further until it overlaps with the edge 100 of the angle steel 10, causing secondary damage to the edge 100 of the angle steel 10, and in more serious cases, it may even cause the bent portion of the edge 100 to break. Therefore, the straightener 2 of this application can achieve rapid straightening of both small and large-angle bends, greatly improving the efficiency and accuracy of straightening.

[0072] Reference Figure 10 The diagram shows the structure between the two straighteners 2. The above describes how the horizontally distributed straighteners 2 straighten the edge 100 of the angle steel 10. The vertically distributed straighteners 2 have the same components as the horizontally distributed straighteners 2, and their working processes and principles are the same, differing only in their angles. Therefore, they will not be elaborated upon here, but only briefly described:

[0073] For the edge 100 of the vertical section of the angle steel 10, the edge 100 of the vertical section of the angle steel 10 is also straightened by the cooperation of the first pressing plate 22 and the second pressing plate 21. Here, the first pressing plate 22 and the second pressing plate 21 are components in the vertically distributed straightener 2.

[0074] However, it should be noted that the straightening of the two sets of side wings 100 of the angle steel 10 is not carried out simultaneously, but alternately, which can effectively avoid interference.

[0075] After both sets of side wings 100 of the angle steel 10 are straightened, the corner 101 in the middle of the angle steel 10 also needs to be straightened. This is because the corner 101 in the middle of the angle steel 10 will also deform during production or transportation, and the angle between the two side wings 100 may be greater than or less than 90 degrees. At this time, it needs to be straightened to make it 90 degrees to ensure the best performance of the angle steel 10. Of course, this situation usually occurs at the two ends of the angle steel 10.

[0076] Furthermore, the angle 101 of the angle steel 10 is divided into an inner angle and an outer angle. During transportation, the inner and outer angles may also be deformed, bent, or protruded due to collisions, so they also need to be straightened.

[0077] Therefore, this embodiment proposes a straightener 3, referring to... Figure 11 , Figure 12 and Figure 13As shown, the straightener 3 includes a straightening plate 31 that presses the outer corner of the angle steel 10 and a straightening block 32 that presses the inner corner of the angle steel 10. A U-shaped frame 30 is slidably installed on the work frame 1. The straightening plate 31 is fixedly installed on the U-shaped frame 30 by bolts and nuts. Four sets of rectangular and inclined straightening columns 33 are installed on the back side of the straightening block 32. The straightening columns 33 slide through the U-shaped frame 30 in an inclined manner. A straightening tension spring 34 is sleeved and connected on the straightening column 33. One side of the straightening tension spring 34 is connected to the straightening block 32 and the other side is connected to the U-shaped frame 30.

[0078] In practice, external force compresses the straightening block 32. The straightening block 32 is restricted by the straightening column 33, so that it can only approach the inner corner of the angle steel 10 along the length direction of the straightening column 33 until the straightening block 32 contacts the inner corner of the angle steel 10. At this time, the straightening plate 31 contacts the outer corner of the angle steel 10. Under the compression of the straightening block 32, the straightening block 32 and the straightening plate 31 simultaneously apply force to the corner 101 of the angle steel 10, thereby shaping the corner 101 of the angle steel 10. If the corner 101 of the angle steel 10 bends, it can be straightened. If the corner 101 of the angle steel 10 (inner corner or outer corner) protrudes, it can also be squeezed and straightened to make it flat.

[0079] The two sets of straighteners 2 and one set of straighteners 3 work together to effectively improve the straightening accuracy of angle steel 10 and ensure its efficiency. Similarly, the straighteners 2 and straighteners 3 of this application can not only straighten angle steel 10 that is broken during production and transportation, but also restore and recycle used angle steel 10, ensuring rapid straightening. Even if angle steel 10 is twisted, it can still be straightened using the straighteners 2 and straighteners 3, as other equipment cannot specifically correct its twisting, greatly improving the applicability of the device. Furthermore, when straightening angle steel 10, it can be conveyed from both ends of the work frame 1. If it needs to pass through the straighteners 2 first and then the straighteners 3, it can straighten angle steel 10 that is slightly broken during production and transportation. If it is necessary to pass through the straightener 3 first and then the corrector 2, it is possible to straighten the parts of some second-hand angle steel 10 that have been twisted and bent, and then to straighten the edge 100 of the angle steel 10 in a more refined manner.

[0080] In addition, refer to Figure 11 As shown, the work frame 1 is equipped with guide rails for the movement of the U-shaped frame 30, which is shown in the figure but not labeled. For some angle steel 10 that only needs to be straightened by the side wings 100, the U-shaped frame 30 can be moved to remove the straightener 3, and only the straightener 2 can be used, which further increases the flexibility of the device.

[0081] Furthermore, the interior angles of angle steel 10 have two structures: arc-shaped and right-angled, as shown in the reference. Figure 13 As shown, the portion is drawn as a schematic diagram, but is not limited to the dimensions shown in the figure. Therefore, in order to ensure that the device in this embodiment can perform straightening operations for interior angles in two different states, the straightening block 32 of this application can be quickly disassembled and replaced. The straightening block 32 includes a fixing block 320 and a disassembly block 321. The fixing block 320 is connected to the straightening column 33. The disassembly block 321 is slidably disposed on the fixing block 320, and the fixing block 320 has an insertion groove for the disassembly block 321 to slide into. One corner of several disassembly blocks 321 has two different structures: a rounded arc shape and a right angle shape, and the rounded arc shape has multiple different sizes.

[0082] It should also be noted that the straightening block 32 of the straightener 3 is equipped with an electric push rod 35 mounted on the C-shaped frame 30. The electric push rod 35 starts to control the straightening block 32 to squeeze and straighten the angle steel 10 at the corner 101.

[0083] In practice, the electric push rod 35 starts to control the straightening block 32 to move to the position of the angle steel 10 and applies external force to squeeze it. With the limiting cooperation of the straightening plate 31 on the angle steel 10, the angle 101 of the angle steel 10 is ensured to be ninety degrees.

[0084] Looking back Figure 10 As shown above, it is mentioned that external force is applied to the pressing block 25 of the straightener 2 and the straightening block 32 of the straightener 3. The external force is controlled by the linkage mechanism 5. The linkage mechanism 5 includes a control motor 52 mounted on the side wall of the work frame 1 via a motor base, a reducer 53 connected to the control motor 52, and an active control shaft 50 that is rotatably set and has several cams 51 at its upper end.

[0085] The active control shaft 50 is rotatably mounted on the work frame 1, and several cams 51 correspond to the positions of the pressing blocks 25.

[0086] In practice, the control motor 52 is started, and the output end of the control motor 52 controls the rotation of the active control shaft 50 through the reducer 53. During the rotation of the active control shaft 50, the cam 51 is driven to rotate. The cam 51 applies external force to the pressing block 25, thereby enabling the pressing block 25 to control the second pressing plate 21 to straighten the side wing 100 of the angle steel 10.

[0087] However, it should be noted that the active control shaft 50 is equipped with two sets of cams 51, each set containing two cams 51.

[0088] In this embodiment, the steps for straightening the angle steel 10 are as follows: First, the two sets of straighteners 2 are divided into vertical straighteners 2 and horizontal straighteners 2, which straighten the vertical and horizontal sections of the side wings 100 of the angle steel 10 respectively.

[0089] First, the angle steel 10 is conveyed to the vertical straightener 2 via the known conveying equipment (intermittent conveying) on ​​the work frame 1 to straighten the side wing 100. Then, the conveying equipment (intermittent conveying) controls its movement to the horizontal straightener 2, where the side wing 100 is straightened by the horizontal straightener 2. Subsequently, the vertical straightener 2 straightens the vertical section of the side wing 100, and so on, until the entire angle steel 10 is straightened.

[0090] The two sets of cams 51 have different angles. When the first set of cams 51 presses against the pressing block 25 in the horizontal straightener 2, the second set of cams 51 is at its farthest distance from the pressing block 25 in the vertical straightener 2. When the first set of cams 51 is at its farthest distance from the pressing block 25 in the horizontal straightener 2, the second set of cams 51 presses against the pressing block 25 in the vertical straightener 2. The two sets of cams work alternately to avoid deformation of the angle steel 10 caused by their simultaneous operation. Because the angle steel 10 is conveyed using an evenly spaced conveying method, each time the pressing block 25 straightens a portion of the edge 100 of the angle steel 10, the continuous intermittent conveying ensures that the edge 100 of the entire angle steel 10 can complete the straightening work.

[0091] During operation: First, check the equipment and confirm that the pressing block 25, pressing plate 22, and pressing plate 21 of the straightener 2 are in their initial positions (the limiting spring 221 and the reset spring 206 are not loose or broken), the straightening block 32 of the straightener 3 is away from the working area under the action of the limiting spring 221, and the power components such as the electric push rod 35 and the control motor 52 are powered normally.

[0092] According to the specifications (side width, thickness) of the right angle steel 10 to be corrected, adjust the position of the guide block 24 of the straightener 2 and the spacing of the straightening plate 31 of the straightener 3 to ensure that the fit between each component and the angle steel 10 meets the requirements.

[0093] If only the side wing 100 needs to be straightened (without needing to handle the corner 101), the straightener 3 can be moved out of the work area by moving the U-shaped frame 30, thus improving operational flexibility.

[0094] Step 2: Use external equipment to lift the equilateral angle steel 10 to be straightened to the same height as the work frame 1, and place it on the work frame 1. At this time, the known conveying equipment on the work frame 1 controls its movement.

[0095] Step 3: After the angle steel 10 is positioned, the control motor 52 of the linkage mechanism 5 is started first. The motor drives the active control shaft 50 to rotate through the reducer 53. At this time, the first set of cams 51 on the active control shaft 50 corresponding to the horizontal straightener 2 rotates with the shaft. When the cam 51 contacts the pressing block 25 of the horizontal straightener 2, it applies a downward external force to it. The pressing block 25 moves down along the guide post 23. During the process, the active wedge block 201 on the pressing block 25 squeezes the passive wedge block 200 of the first pressing plate 22. At the same time, the second pressing plate 21 at the bottom of the pressing block 25 moves down. The control post 204 of the auxiliary rod 203 slides along the control groove 205 of the fixed plate 202 and drives the second pressing plate 21 to slide horizontally. The first pressing plate 22 and the second pressing plate 21 work together to apply a bidirectional force to the horizontal side wing 100 to complete the straightening of the horizontal side wing 100.

[0096] When the first set of cams 51 separates from the pressing block 25 of the horizontal straightener 2, the second set of cams 51 on the active control shaft 50 corresponding to the vertical straightener 2 begins to contact the pressing block 25 of the vertical straightener 2, repeating similar pressing and transmission actions to straighten the vertical side wing 100 of the angle steel 10.

[0097] Two sets of straighteners 2 work alternately to avoid deformation of angle steel 10 caused by simultaneous operation. At the same time, the conveying equipment of the work frame 1 uses equal intervals to intermittently convey angle steel 10. Each conveying completes the straightening of a section of the side wing 100 until the side wing 100 of the entire angle steel 10 is straightened.

[0098] Step 4: After the side wing 100 is straightened, the conveying equipment of the work frame 1 moves the angle steel 10 corner 101 position to directly below the straightener 3, and starts the electric push rod 35 of the straightener 3. The push rod pushes the straightening block 32 to move towards the inner corner of the angle steel 10 under the restriction of the inclined straightening column 33.

[0099] When the straightening block 32 contacts the inner corner, the straightening plate 31 on the convex frame 30 simultaneously contacts the outer corner of the angle steel 10. The two work together to apply a shaping force to the corner 101. If the angle of the corner 101 deviates from 90 degrees, it is adjusted to a right angle. If there is a protrusion, it is squeezed flat. The straightening tension spring 34 buffers the pressure in real time to prevent breakage. Similarly, through the intermittent conveying of the angle steel 10, the straightening of the entire angle steel 10 corner 101 is completed.

[0100] Step 5: After all straightening processes are completed, the conveying equipment of work frame 1 will move the angle steel 10 out from the other side of work frame 1. Then, the control motor 52 of the linkage mechanism 5 and the electric push rod 35 of the straightener 3 will be turned off. Check whether the components of the straightener 2 and the straightener 3 are reset, clean up the debris in the processing area, complete one straightening operation and wait for the next operation.

[0101] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A multi-directional straightening machine for the main members of an ultra-high voltage transmission tower, characterized in that, include: The work frame (1) has a processing area at its upper end for straightening the main members of the UHV tower. The processing area is equipped with conveying equipment. The processing area of ​​the work frame (1) also includes: Corrector used for straightening the side wings of the main body of ultra-high voltage tower (2); Straightener (3) used to straighten the rotation angle of the main body of UHV tower. The straightener (2) includes a mounting plate (20) on the work frame (1), a second pressing plate (21) for pressing the side wings of the main body of the UHV tower, a first pressing plate (22) that works with the second pressing plate (21) to straighten the side wings of the main body of the UHV tower, two sets of guide columns (23) on one side of the mounting plate (20), and a guide block (24) with a slanted groove (26) on the other side of the mounting plate (20). A vertically movable pressing block (25) is slidably installed on the guide column (23). The second pressing plate (21) slides along the width direction of the pressing block (25) and is located at its bottom. The first pressing plate (22) is slidably located in the inclined groove (26) opened on the inclined surface of the guide block (24). The straightener (3) includes a straightening block (32) for pressing the inner side of the corner of the main leg of the UHV tower.

2. The multi-directional straightening machine for the main members of an ultra-high voltage transmission tower according to claim 1, characterized in that: The No. 1 pressing plate (22) and the No. 2 pressing plate (21) work together to apply opposing or opposite forces to the side wings of the main body of the UHV tower located in the middle.

3. The multi-directional straightening machine for the main members of an ultra-high voltage transmission tower according to claim 1, characterized in that: The straightener (3) also includes a slidable frame (30) mounted on the work frame (1), and the slidable frame (30) is provided with a straightening plate (31) for pressing the outer side of the corner of the main leg of the UHV tower. The straightening block (32) is connected to several inclined straightening columns (33) on its back side. The straightening columns (33) slide through the swivel frame (30), and a straightening tension spring (34) is sleeved on the straightening column (33). One side of the straightening tension spring (34) is connected to the swivel frame (30), and the other side is set on the straightening block (32). The straightener (3) is also equipped with an electric push rod (35) mounted on the U-shaped frame (30) for providing power.

4. A multi-directional straightening machine for the main members of an ultra-high voltage transmission tower according to claim 1, characterized in that: The corrector (2) is provided in two sets, including a corrector (2) distributed horizontally to straighten the horizontal wings and a corrector (2) distributed vertically to straighten the vertical wings. The two sets of correctors (2) work alternately.

5. A multi-directional straightening machine for the main members of an ultra-high voltage transmission tower according to claim 1, characterized in that: A passive wedge block (200) is provided on the side of the first pressing plate (22) facing away from the guide block (24), and an active wedge block (201) matching the inclined surface of the passive wedge block (200) is provided on the pressing block (25). A fixing plate (202) is fixed on the mounting plate (20). An auxiliary rod (203) is provided on one side of the second pressing plate (21). One end of the auxiliary rod (203) extends to the fixing plate (202) and is provided with a control post (204). A control groove (205) is provided on the fixing plate (202) for the control post (204) to slide and guide the second pressing plate (21) to move horizontally. A reset spring (206) is provided between the second pressing plate (21) and the pressing block (25).

6. A multi-directional straightening machine for the main members of an ultra-high voltage transmission tower according to claim 1, characterized in that: A limiting post (220) parallel to the inclined surface of the guide block (24) is installed on the back side of the first pressing plate (22). The limiting post (220) extends outward through the mounting plate (20) on the side away from the first pressing plate (22). A limiting spring (221) is sleeved on the limiting post (220). One end of the limiting spring (221) is connected to the first pressing plate (22), and the other end is connected to the mounting plate (20).

7. A multi-directional straightening machine for the main members of an ultra-high voltage transmission tower according to claim 1, characterized in that: A support spring (230) is fitted on the guide post (23). One side of the support spring (230) is connected to the mounting plate (20), and the other side is connected to the pressing block (25).

8. A multi-directional straightening machine for the main members of an ultra-high voltage transmission tower according to claim 3, characterized in that: The straightening block (32) includes a fixed block (320) connected to the straightening column (33) and a disassembly block (321) that can be detached and inserted into the fixed block (320). The working surface of the disassembly block (321) is a multi-sized arc or right angle shape.

9. A multi-directional straightening machine for the main members of an ultra-high voltage transmission tower according to claim 1, characterized in that: The work frame (1) is also provided with a linkage mechanism (5) for driving the two sets of correctors (2). The linkage mechanism (5) includes an active control shaft (50) on the work frame (1). The active control shaft (50) is provided with two sets of cams (51) corresponding to the two sets of correctors (2) respectively. The installation angles of the two sets of cams (51) are staggered. The work frame (1) is also equipped with a control motor (52), the output end of which is connected to the active control shaft (50), and a reducer (53) is provided between them.

10. A multi-directional straightening machine for the main members of an ultra-high voltage transmission tower according to claim 1, characterized in that: The No. 1 pressing plate (22) and the No. 2 pressing plate (21) are provided with wear-resistant coatings at the contact ends with the main body of the UHV tower.

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