A seven-wheel cold bending machine for I-beams

Abstract

This utility model discloses a seven-wheel cold bending machine for I-beams, including a cold bending machine body, a support base at the bottom of the cold bending machine body, a gantry support frame at the upper end of the support base, a first pressing and limiting device on the left side of the gantry support frame, a second pressing and limiting device on the left side of the first pressing and limiting device, a third pressing and limiting device on the left side of the second pressing and limiting device, and a rear pressing and limiting device on the left side of the third pressing and limiting device. A travel drive device is correspondingly provided behind the first pressing and limiting device, the second bending and jacking device, and the third pressing and limiting device. A rear gantry support frame is provided on the left side of the rear pressing and limiting device. In summary, this utility model has the advantages of simple structure, convenient use, and by setting multiple bending systems on the support base, it can greatly improve processing efficiency and quality and reduce production costs according to the bending parameters.

Description

Technical Field

[0001] This utility model relates to the field of mechanical processing technology, and in particular to a seven-wheel cold bending machine for I-beams. Background Technology

[0002] In tunnel, subway, hydropower station, and underground cavern engineering projects, I-beams are frequently used to bend and assemble into support arches for support. The conventional bending process for I-beams requires complex steps such as I-beam cutting, butt jointing, straightening, and lathe machining. However, it is difficult to meet the technical requirements for the bending radius, perimeter assembly, and planar warping of I-beams, especially for bending large-diameter I-beams with small radii. Currently, most cold bending machines suffer from significant errors in bending parameters due to the large pressure applied to the I-beams during bending. This is caused by the cold bending system applying considerable pressure during operation. Therefore, a new type of seven-wheel cold bending machine for I-beams has been developed. This machine features a simple structure, ease of use, and multiple bending systems mounted on a support base. These systems can extend to different lengths according to the required bending parameters, ensuring the bending radius of the I-beam meets the specifications. Furthermore, the different bending systems prevent excessive bending, wrinkling, or breakage during processing, greatly improving processing efficiency and quality while reducing production costs. This new machine has significant application value. Utility Model Content

[0003] The purpose of this utility model is to provide a seven-wheel cold bending machine for I-beams to solve the problem that most current cold bending machines have errors in bending parameters due to the lateral displacement of the I-beams during the bending process. Therefore, a seven-wheel cold bending machine for I-beams has been developed. It has a simple structure, is easy to use, and can extend different lengths through different bending systems on the support base according to the bending parameters. This allows the bending radius of the I-beams to meet the requirements. Moreover, the different cold bending systems can prevent the I-beams from being bent too much during processing, resulting in wrinkles or breakage. This greatly improves processing efficiency and quality and reduces production costs. This seven-wheel cold bending machine for I-beams has important application significance.

[0004] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0005] A seven-wheel cold bending machine for I-beams includes a machine body with a support base at its bottom. The machine body is characterized by: a gantry support frame at its upper end; a first pressing and limiting device on the left side of the gantry support frame; a second pressing and limiting device on the left side of the first pressing and limiting device; a third pressing and limiting device on the left side of the second pressing and limiting device; a rear pressing and limiting device on the left side of the third pressing and limiting device; a travel drive device corresponding to the rear sides of the first, second, and third pressing and limiting devices; and a rear gantry support frame on the left side of the rear pressing and limiting device.

[0006] Furthermore, the gantry support frame is equipped with a gantry frame, and a drive cylinder is installed at the upper middle part of the gantry frame. A lifting connecting plate is connected below the drive cylinder, and a lifting wheel is connected below the lifting connecting plate. A fixed wheel is installed below the lifting wheel. The left and right ends of the lifting wheel and the fixed wheel are located in the limiting grooves opened in the longitudinal support rods of the gantry frame. Tension positioning rods are installed at both ends of the drive cylinder, and the bottom of the tension positioning rods is fixedly connected to the lifting connecting plate.

[0007] Furthermore, the first pressing and limiting device is equipped with a hydraulic propulsion device, and a square frame is connected to the right side of the hydraulic propulsion device. The top wheel is located in the square frame and connected to the bearing of the square frame. A limiting plate is provided at the bottom of the square frame, and the limiting blocks provided at the left and right ends of the limiting plate are located in the limiting grooves opened in the inner sidewall of the sliding track.

[0008] Furthermore, the rear clamping and limiting device is equipped with a drive motor, which is connected to a reducer. A top shaft is provided on the right side of the reducer, and a rear square frame is connected to the right side of the top shaft. The rear top wheel is connected to the rear square frame through a bearing plate. The left and right ends of the lower limiting plate at the bottom of the square frame are located in the slots opened in the limiting track.

[0009] Furthermore, a support base plate is provided at the bottom of the driving device, a driving wheel is provided at the upper middle part of the support base plate, a drive shaft is provided at the upper end of the driving wheel, a drive gear is provided at the upper end of the drive shaft, a connecting plate is provided at the upper end of the top wall of the driving wheel, and a reinforcing rib plate is provided below the connecting plate.

[0010] Beneficial Effects: This utility model features multiple clamping and limiting devices installed above the support base. Each clamping and limiting device has a corresponding traveling drive device on its rear side. The I-beam is located within the gantry support frame and moves forward under the frictional force of the traveling drive device. The top wheels of the first, second, and third clamping and limiting devices extend to apply pressure to the I-beam and cooperate with the traveling drive device to prevent movement during processing. The rear clamping and limiting device extends its rear top wheel a certain distance according to parameters and applies pressure to the I-beam, thus fulfilling the bending requirements. During the bending process, different clamping and limiting devices extend sequentially... By applying different bending pressures at varying distances, the stress generated by the sequential bending of the I-beams effectively prevents wrinkles or breakage during processing, thus improving processing quality. In summary, this invention features a simple structure, ease of use, and the ability to extend the I-beams to different lengths according to bending parameters by setting multiple bending systems on the support base. This allows the bending radius of the I-beams to meet requirements. Furthermore, the use of different cold bending systems during processing prevents excessive bending that could lead to wrinkles or breakage, significantly improving processing efficiency and quality while reducing production costs. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0012] Figure 2 This is a three-dimensional structural diagram of the gantry support frame of this utility model;

[0013] Figure 3 This is a three-dimensional structural diagram of the first pressing and limiting device of this utility model;

[0014] Figure 4 This is a three-dimensional structural diagram of the rear clamping and limiting device of this utility model;

[0015] Figure 5 This is a three-dimensional structural diagram of the driving device of this utility model.

[0016] Reference numerals: 0. Cold bending machine body; 1. Support base; 2. Gantry support frame; 20. Drive cylinder; 21. Gantry frame; 22. Tension positioning rod; 23. Lifting connecting plate; 24. Lifting wheel; 25. Fixed wheel; 26. Limiting groove; 3. First pressing limiting device; 30. Hydraulic propulsion device; 31. Fixed plate; 32. Square frame; 33. Top wheel; 34. Sliding rail; 340. Limiting groove; 35. Limiting plate; 36. Limiting block; 4. Second pressing limiting device; 5. Second pressing limiting device; 6. Rear pressing limiting device; 60. Drive motor; 61. Reducer; 62. Rear square frame; 63. Bearing plate; 64. Top wheel; 65. Limiting rail; 650. Slot; 66. Top shaft; 7. Traveling drive device; 70. Drive gear; 71. Drive shaft; 72. Connecting plate; 73. Support base plate; 74. Traveling wheel; 75. Reinforcing rib plate. Detailed Implementation

[0017] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0018] Specific embodiments of this utility model, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, this utility model provides a seven-wheel cold bending machine for I-beams, including a cold bending machine body 0. A support base 1 is provided at the bottom of the cold bending machine body 0. A gantry support frame 2 is provided at the upper end of the support base 1. A first pressing and limiting device 3 is provided on the left side of the gantry support frame 2. A second pressing and limiting device 4 is provided on the left side of the first pressing and limiting device 3. A third pressing and limiting device 5 is provided on the left side of the second pressing and limiting device 4. A rear pressing and limiting device 6 is provided on the left side of the third pressing and limiting device 5. A travel drive device 7 is respectively provided on the rear side of the first pressing and limiting device 3, the second pressing and limiting device 4, and the third pressing and limiting device 5. A rear gantry support frame 8 is provided on the left side of the rear pressing and limiting device 6.

[0019] like Figure 1 As shown, multiple clamping and limiting devices are set above the support base 1, and a traveling drive device 7 is set on the rear side of each clamping and limiting device. The I-beam is located inside the gantry support frame 2 and moves forward under the frictional drive of the traveling drive device 7. The top wheels of the first clamping and limiting device 3, the second clamping and limiting device 4, and the third clamping and limiting device 5 extend and cooperate with the traveling drive device 7 to limit the I-beam to the left and right. The rear clamping and limiting device 6 extends a certain distance according to the parameters and applies a certain pressure to the I-beam to complete the bending requirement of the I-beam. During the bending process of the I-beam, different clamping and limiting devices extend to different distances in sequence and apply different bending pressures in sequence. The stress brought by the effective bending of the I-beam in sequence avoids the phenomenon of wrinkles or breakage during the processing.

[0020] like Figure 2 As shown, the gantry support frame 2 is equipped with a gantry frame 21. A drive cylinder 20 is installed at the upper middle part of the gantry frame 21. A lifting connecting plate 23 is connected below the drive cylinder 20. A lifting wheel 24 is connected below the lifting connecting plate 23. A fixed wheel 25 is installed below the lifting wheel 24. The left and right ends of the lifting wheel 24 and the fixed wheel 25 are located in the limiting grooves 26 opened in the longitudinal support rods of the gantry frame 21. Tension positioning rods 22 are installed at both ends of the drive cylinder 20. The bottom of 22 is fixedly connected to the lifting connecting plate 23; during use, the lifting connecting plate 23 is connected to the bottom of the drive cylinder 20, and the lifting connecting plate 23 is connected to the lifting wheel 24. The lifting wheel 24 and the fixed wheel 25 are provided with bearings at their left and right ends. The lifting wheel 24 and the fixed wheel 25 can rotate. The drive cylinder 20 can pull the lifting connecting plate 23 and the lifting wheel 24 and move up and down under the action of the tension positioning rod 22. The I-beam is located between the lifting wheel 24 and the fixed wheel 25 and moves above the fixed wheel 25.

[0021] like Figure 3 As shown, the first pressing and limiting device 3 is equipped with a hydraulic propulsion device 30. A square frame 32 is connected to the right side of the hydraulic propulsion device 30. The top wheel 33 is located in the square frame 32 and is connected to the bearing of the square frame 32. A limiting plate 35 is provided at the bottom of the square frame 32. The limiting blocks 36 provided at the left and right ends of the limiting plate 35 are located in the limiting grooves 340 opened on the inner side wall of the sliding track 34.

[0022] In the design process, the first clamping limit device 3, the second clamping limit device 4, and the third clamping limit device 5 have the same structure. The push rod on the right side of the hydraulic propulsion device 30 is fixedly connected to the square frame 32. The left and right ends of the limit plate 35 at the bottom of the square frame 32 are located in the limit groove 340 opened on the inner side wall of the sliding rail 34. The top wheel 33 is located in the square frame 32 and is connected to the bearing of the square frame 32. The top wheel 33 can rotate 360°. During operation, according to the bending requirements, the hydraulic propulsion device 30 starts the push rod to extend a certain distance and pushes the square frame 32 and the top wheel 33 to move and stick to the I-beam and apply a certain pressure. During the movement of the square frame 32, the sliding rail 34 can limit the square frame 32.

[0023] like Figure 4 As shown, the rear clamping and limiting device 6 is equipped with a drive motor 60, which is connected to a reducer 61. A top shaft 66 is provided on the right side of the reducer 61, and a rear square frame 62 is connected to the right side of the top shaft 66. The rear top wheel 64 is connected to the rear square frame 62 through a bearing plate 63. The left and right ends of the lower limiting plate at the bottom of the square frame 62 are located in the slots 650 opened in the limiting track 65.

[0024] In the design process, the drive motor 60 is connected to the reducer 61. A top shaft 66 is set on the right side of the reducer 61, and a rear square frame 62 is fixedly set on the right side of the top shaft 66. The rear top wheel 64 is located inside the rear square frame 62 and can rotate 360°. The rear square frame 62 is located inside the limiting rail 65 and its bottom is located in the slot 650. The limiting rail 65 can limit the rear square frame 62. During operation, the drive motor 60 starts and, through the action of the reducer 61, cooperates with the top shaft 66 to extend or retract the top shaft 66. This technology is relatively common in the market. When the top shaft 66 extends, it pushes the square frame 62 and the rear top wheel 64 forward to apply a certain pressure to the I-beam, thereby achieving the bending requirements.

[0025] like Figure 5 As shown, the bottom of the driving device 7 is provided with a support base plate 73, the upper part of the middle of the support base plate 73 is provided with a driving wheel 74, the upper part of the driving wheel 74 is provided with a drive shaft 71, the upper part of the drive shaft 71 is provided with a drive gear 70, the upper part of the top wall of the driving wheel 74 is provided with a connecting plate 72, and the lower part of the connecting plate 72 is provided with a reinforcing rib plate 75.

[0026] A drive gear 70 is provided on the top of the driving device 7. Different drive gears 70 are connected by a drive chain. The drive chain is driven by a drive motor to make the drive gear 70 rotate. A drive shaft 71 is provided below the drive gear 70. A travel wheel 74 is provided below the drive shaft 71. The drive gear 70, drive shaft 71 and travel wheel 74 are an integral structure and are located within the frame composed of connecting plate 72 and reinforcing rib plate 75.

[0027] In use, the following steps are required: First, the drive cylinder 20 is activated according to the dimensions of the I-beam. The drive cylinder 20 pulls the lifting connecting plate 23 and the lifting wheel 24 upwards under the limiting action of the tension positioning rod 22. The I-beam is positioned above the fixed wheel 25 and below the lifting wheel 24. The hydraulic propulsion device 30 is activated to push the top wheel 33 to apply a certain pressure to the side wall of the I-beam and make it fit tightly against the outer wall of the traveling wheel 74 set in the traveling drive device 7. At the same time, the second pressing and limiting device 4 and the third pressing and limiting device 5 are activated to push the I-beam tightly against the outer wall of the traveling wheel 74. The drive gear 70 set at the top of the traveling drive device 7 is connected by a drive chain. The drive motor drives the drive chain and drive gear 70 to rotate and simultaneously drives the traveling wheel 74 to rotate. There is friction between the traveling wheel 74 and the I-beam, and the I-beam moves forward under the action of friction. When the rear clamping limit device 6 reaches the right side, the rear clamping limit device 6 starts the drive motor 60 according to the bending radius requirement. The drive motor 60 and the reduction motor 61 cooperate to push the top shaft 66 to extend and push the rear square frame 62 and the rear top wheel 64 to extend a specified distance, applying a certain pressure to the I-beam to achieve the bending requirement. During the bending process, a trial bend can be performed first. After the bend is completed, it is measured to see if it meets the size requirements. If the arc is too small, the top shaft 66 continues to push the rear top wheel 64 to extend until the bending arc is reached. If the arc is too large, the top shaft 66 retracts and drives the rear top wheel 64 to retract to reduce the applied pressure and thus reduce the arc size. In general, this utility model has the advantages of simple structure, convenient use, and automatic extension of the rainproof plate according to the amount of rain and the outdoor temperature, which can effectively prevent rainwater from splashing in and prevent the communication box from being baked by the sun and causing the internal temperature of the box to be too high.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this invention, and all such modifications or substitutions should be covered within the scope of the claims of this invention.

Claims

1. A I-beam seven-wheel cold bending machine, comprising a cold bending machine body (0), the bottom of the cold bending machine body (0) is provided with a supporting base (1), characterized in that: The upper end of the support base (1) is provided with a gantry support frame (2). A first pressing limit device (3) is provided on the left side of the gantry support frame (2). A second pressing limit device (4) is provided on the left side of the first pressing limit device (3). A third pressing limit device (5) is provided on the left side of the second pressing limit device (4). A rear pressing limit device (6) is provided on the left side of the third pressing limit device (5). A travel drive device (7) is provided on the rear side of the first pressing limit device (3), the second pressing limit device (4), and the third pressing limit device (5). A rear gantry support frame (8) is provided on the left side of the rear pressing limit device (6).

2. A seven-wheel cold bending machine for I-beams according to claim 1, characterized in that: The gantry support frame (2) is provided with a gantry frame (21). A drive cylinder (20) is provided at the upper middle part of the gantry frame (21). A lifting connecting plate (23) is connected below the drive cylinder (20). A lifting wheel (24) is connected below the lifting connecting plate (23). A fixed wheel (25) is provided below the lifting wheel (24). The left and right ends of the lifting wheel (24) and the fixed wheel (25) are located in the limiting groove (26) opened by the longitudinal support rod of the gantry frame (21). Tension positioning rods (22) are provided at the left and right ends of the drive cylinder (20). The bottom of the tension positioning rod (22) is fixedly connected to the lifting connecting plate (23).

3. A seven-wheel cold bending machine for I-beams according to claim 1, characterized in that: The first pressing and limiting device (3) is equipped with a hydraulic propulsion device (30). A square frame (32) is connected to the right side of the hydraulic propulsion device (30). The top wheel (33) is located inside the square frame (32) and is connected to the bearing of the square frame (32). A limiting plate (35) is provided at the bottom of the square frame (32). The limiting blocks (36) provided at the left and right ends of the limiting plate (35) are located in the limiting groove (340) opened on the inner side wall of the sliding track (34).

4. A seven-wheel cold bending machine for I-beams according to claim 1, characterized in that: The rear clamping limit device (6) is equipped with a drive motor (60), which is connected to a reducer (61). A top shaft (66) is provided on the right side of the reducer (61), and a rear square frame (62) is connected to the right side of the top shaft (66). The rear top wheel (64) is connected to the rear square frame (62) through a bearing plate (63). The left and right ends of the lower limit plate at the bottom of the rear square frame (62) are located in the slots (650) opened in the limit track (65).

5. A seven-wheel cold bending machine for I-beams according to claim 1, characterized in that: The travel drive device (7) is provided with a support base plate (73) at the bottom, a travel wheel (74) is provided at the upper middle part of the support base plate (73), a drive shaft (71) is provided at the upper end of the travel wheel (74), a drive gear (70) is provided at the upper end of the drive shaft (71), a connecting plate (72) is provided at the upper end of the top wall of the travel wheel (74), and a reinforcing rib plate (75) is provided below the connecting plate (72).

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