Height adjusting structure for cold bending machine

Abstract

The utility model discloses a height adjusting structure for a cold bending machine, which comprises a base, a controller is arranged above the base, four groups of mounting racks are arranged above the base, the four groups of mounting racks are symmetrically distributed, two groups of limiting rollers are arranged on each of the four groups of mounting racks, and two groups of limiting rollers are arranged on each of the four groups of mounting racks. The device comprises a base, a mounting frame is arranged on the base, two sets of symmetrically-distributed lead screws are arranged on the mounting frame, the upper ends of the two sets of lead screws are sleeved with driving wheels, a driving chain is arranged in the mounting frame and is in transmission connection with the two sets of driving wheels, and the mounting frame is arranged above the base. The height of the limiting roller located on the upper portion in the installation frame is adjusted through the installation frame, the lead screw, the driving wheel and the driving chain, meanwhile, the distance between two sets of limiting rings on the limiting roller is adjusted through the two-way screw, and the adjusting process is convenient and rapid and does not need to be manually carried out by workers; and the consistency of the spacing between the limiting rollers and the spacing between the limiting rings is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of cold bending machines, in particular to a height adjustment structure for cold bending machines. Background Art

[0002] The main function of the I-beam cold bending machine is to cold-bend and deform various types of steel according to a certain curvature radius in accordance with the requirements of construction and use without changing the internal stress of the steel, so that the steel can achieve the purpose of bending and deformation without changing its mechanical properties and strength, greatly reducing labor intensity and labor costs, improving work efficiency and cold bending machine processing accuracy, and becoming a special equipment for tunnel construction steel arch frame processing. The steel arch frame processed by the I-beam cold bending machine can be widely used in the construction of railways, highways, and hydraulic tunnels. It can also be used in bridges, large factories and other projects. It has the characteristics of high bending dimensional accuracy, small distortion and deformation of I-beam processing, and smooth and uniform curvature.

[0003] At present, the cold bending machine needs to use limiting rollers to limit the I-beams during the processing of I-beams to ensure the bending effect of the I-beams. The height of the limiting rollers needs to be adjusted for processing different types of I-beams. There are many limiting rollers in the existing technology. When adjusting the height, the staff needs to adjust different limiting rollers separately. The operation steps are cumbersome and there may be height differences when adjusting different limiting rollers. Utility Model Content

[0004] The purpose of the present invention is to provide a height adjustment structure for a cold bending machine to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a height adjustment structure for a cold bending machine, comprising a base, a controller provided above the base, a mounting bracket provided above the base, four groups of mounting brackets being provided, the four groups of mounting brackets being symmetrically distributed, two groups of limiting rollers being provided on the four groups of mounting brackets, two groups of symmetrically distributed screw rods being provided on the mounting brackets, the upper ends of the two groups of screw rods being sleeved with driving wheels, a drive chain being provided in the mounting bracket, the drive chain being respectively connected to the two groups of driving wheels for transmission, a positioning bracket being provided above the base, a pressure roller being fixedly installed on the positioning bracket, a hydraulic cylinder being provided above the base, two groups of symmetrically distributed fixing brackets being fixedly installed on the base, and two groups of symmetrically distributed threaded rods being provided in the fixing brackets.

[0006] As a further preferred embodiment of the present technical solution, the two groups of limiting rollers are both slidably connected to the mounting frame, the two ends of the two groups of screw rods respectively pass through the mounting frame and are rotatably connected to the mounting frame through bearings, and the two groups of screw rods respectively pass through the two ends of the upper limiting roller and are respectively threadedly connected to the limiting roller.

[0007] As a further preferred embodiment of the present technical solution, both groups of the limiting rollers are provided with sliding grooves, and two groups of symmetrically distributed limiting rings are sleeved on the limiting rollers. Both groups of the limiting rings are slidingly connected to the limiting rollers through the sliding grooves, and a bidirectional screw is provided in the limiting rollers.

[0008] As a further preferred embodiment of the present technical solution, both ends of the bidirectional screw respectively pass through the limiting rollers and are rotatably connected to the limiting rollers through bearings, and the bidirectional screw respectively passes through two sets of limiting rings and are threadedly connected to the two sets of limiting rings.

[0009] As a further preferred embodiment of the present technical solution, the positioning frame is slidably connected to the base, the positioning frame is connected to the output end of the hydraulic cylinder piston rod, the positioning frame is slidably connected to the fixed frame, the right ends of the two groups of threaded rods are both sleeved with synchronous wheels, a synchronous belt is provided in the fixed frame, and the synchronous belt is respectively connected to the two groups of synchronous wheels for transmission.

[0010] As a further preferred embodiment of the present technical solution, both ends of the two groups of threaded rods respectively pass through the fixing frame and are rotatably connected to the fixing frame through bearings, and the two groups of threaded rods pass through the positioning frame and are threadedly connected to the positioning frame.

[0011] The utility model provides a height adjustment structure for a cold bending machine, which has the following beneficial effects:

[0012] (1) The utility model realizes the adjustment of the height of the upper limiting roller in the mounting frame through the provided mounting frame, screw rod, driving wheel and driving chain, and realizes the adjustment of the spacing between the two groups of limiting rings on the limiting roller through the provided bidirectional screw rod. The adjustment process is convenient and quick and does not require manual operation by the staff, thereby ensuring the consistency of the spacing between the limiting rollers and the limiting rings, and expanding the application range of the cold bending machine; the rotation of the screw rod is driven by the motor, and the two groups of screw rods in the mounting frame are rotated synchronously under the action of the driving chain and the driving wheel, and then the height of the upper limiting roller is adjusted under the limiting action of the mounting frame, and the rotation of the bidirectional screw rod is driven by the motor in the limiting roller, and the spacing between the two groups of limiting rings on the limiting roller is adjusted under the limiting action of the slide groove. During the adjustment process, the controller controls the motor or motor to drive the screw rod and the bidirectional screw rod to rotate, thereby ensuring the consistency of the adjustment of the limit height and width of multiple groups of mounting frames, while saving adjustment time and eliminating the need for manual adjustment of each group by the staff.

[0013] (2) The utility model realizes the adjustment of the distance between the pressure roller and the mounting frame by the fixed frame provided and the hydraulic cylinder. According to the actual processing requirements of the I-beam, the distance between the pressure roller and the mounting frame is calculated, and the hydraulic cylinder is controlled by the controller to drive the mounting frame to slide on the base, and the motor in the fixed frame is started synchronously to drive the rotation of the threaded rod, and the two groups of threaded rods are synchronously rotated under the action of the synchronous belt and the synchronous wheel. The auxiliary hydraulic cylinder realizes the positioning frame to drive the pressure roller to slide smoothly, and the stability of the pressure roller is guaranteed under the action of the two groups of threaded rods and the mounting frame, so as to avoid the pressure roller from tilting under the action of pressure during use, thereby affecting the processing effect of the I-beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic structural diagram of the limiting roller of the utility model;

[0016] Figure 3 This is a schematic structural diagram of the limit ring of the utility model;

[0017] Figure 4 This is a schematic structural diagram of the pressure roller of the present utility model;

[0018] In the figure: 1. Base; 2. Controller; 3. Mounting frame; 4. Limiting roller; 5. Limiting ring; 6. Slide; 7. Bidirectional screw; 8. Lead screw; 9. Drive wheel; 10. Drive chain; 11. Positioning frame; 12. Pressure roller; 13. Hydraulic cylinder; 14. Fixed frame; 15. Threaded rod; 16. Synchronous wheel; 17. Synchronous belt. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0020] The utility model provides a technical solution: Figure 1 and Figure 2 、 Figure 3As shown, in this embodiment, a height adjustment structure for a cold bending machine includes a base 1, which is characterized in that: the number of mounting frames is set to four, the four groups of mounting frames 3 are symmetrically distributed, and the four groups of mounting frames 3 are each provided with two groups of limiting rollers 4, and the mounting frames 3 are provided with two groups of symmetrically distributed screw rods 8, and the upper ends of the two groups of screw rods 8 are sleeved with driving wheels 9, and a driving chain 10 is provided in the mounting frame 3, and the driving chain 10 is respectively connected to the two groups of driving wheels 9 for transmission. A positioning frame 11 is provided above the base 1, and a pressure roller 12 is fixedly installed on the positioning frame 11, a hydraulic cylinder 13 is provided above the base 1, and two groups of symmetrically distributed fixing frames 14 are fixedly installed on the base 1, and two groups of symmetrically distributed fixing frames 14 are provided in the fixing frame 14. The threaded rod 15 of the cloth, the two groups of limit rollers 4 are slidably connected to the mounting frame 3, the two ends of the two groups of screw rods 8 respectively penetrate the mounting frame 3 and are rotatably connected to the mounting frame 3 through bearings, the two groups of screw rods 8 respectively penetrate the two ends of the upper limit roller 4 and are respectively threadedly connected to the limit roller 4, the two groups of limit rollers 4 are provided with a slide groove 6, two groups of symmetrically distributed limit rings 5 are sleeved on the limit roller 4, the two groups of limit rings 5 are slidably connected to the limit roller 4 through the slide groove 6, a bidirectional screw 7 is provided in the limit roller 4, the two ends of the bidirectional screw 7 respectively penetrate the limit roller 4 and are rotatably connected to the limit roller 4 through bearings, the bidirectional screw 7 respectively penetrates the two groups of limit rings 5 and is respectively threadedly connected to the two groups of limit rings 5.

[0021] The height of the limiting roller 4 located above the mounting frame 3 is adjusted by the mounting frame 3, the screw rod 8, the driving wheel 9 and the driving chain 10. At the same time, the distance between the two groups of limiting rings 5 on the limiting roller 4 is adjusted by the bidirectional screw rod 7. The adjustment process is convenient and quick and does not require manual operation by the staff, thereby ensuring the consistency of the distance between the limiting rollers 4 and the limiting rings 5, and expanding the scope of application of the cold bending machine.

[0022] like Figure 1 and Figure 4 As shown, the positioning frame 11 is slidably connected to the base 1, the positioning frame 11 is connected to the output end of the piston rod of the hydraulic cylinder 13, the positioning frame 11 is slidably connected to the fixing frame 14, the right ends of the two groups of threaded rods 15 are sleeved with synchronous wheels 16, and a synchronous belt 17 is provided in the fixing frame 14. The synchronous belt 17 is respectively connected to the two groups of synchronous wheels 16 for transmission, and the two ends of the two groups of threaded rods 15 respectively pass through the fixing frame 14 and are rotatably connected to the fixing frame 14 through bearings. The two groups of threaded rods 15 pass through the positioning frame 11 and are threadedly connected to the positioning frame 11.

[0023] The distance between the pressure roller 12 and the mounting frame 3 is adjusted by cooperating with the fixed frame 14 and the hydraulic cylinder 13. According to the actual I-beam processing requirements, the distance between the pressure roller 12 and the mounting frame 3 is calculated, and the hydraulic cylinder 13 is controlled by the controller 2 to drive the mounting frame 3 to slide on the base 1. The motor in the fixed frame 14 is started synchronously to drive the rotation of the threaded rod 15, and the two groups of threaded rods 15 are rotated synchronously under the action of the synchronous belt 17 and the synchronous wheel 16. The auxiliary hydraulic cylinder 13 realizes the smooth sliding of the pressure roller 12 driven by the positioning frame 11. Under the action of the two groups of threaded rods 15 and the mounting frame 3, the stability of the pressure roller 12 is guaranteed, and the pressure roller 12 is prevented from tilting under the action of pressure during use, thereby affecting the processing effect of the I-beam.

[0024] The utility model provides a height adjustment structure for a cold bending machine, and its specific working principle is as follows: the rotation of the screw rod 8 is driven by the motor, and the two groups of screw rods 8 in the mounting frame 3 are rotated synchronously under the action of the drive chain 10 and the drive wheel 9, and then the height of the upper limiting roller 4 is adjusted under the limiting action of the mounting frame 3, and at the same time, the rotation of the bidirectional screw rod 7 is driven by the motor in the limiting roller 4, and the spacing between the two groups of limiting rings 5 on the limiting roller 4 is adjusted under the limiting action of the slide 6. During the adjustment process, the controller 2 controls the motor or the motor to drive the screw rod 8 and the bidirectional screw 7 to rotate, thereby ensuring the consistency of the adjustment of the upper limit height and width of multiple groups of mounting frames 3, and saving adjustment time. Manual adjustment of groups by staff is not required. The fixed frame 14 is provided to cooperate with the hydraulic cylinder 13 to adjust the distance between the pressure roller 12 and the mounting frame 3. According to the actual I-beam processing requirements, the distance between the pressure roller 12 and the mounting frame 3 is calculated, and the hydraulic cylinder 13 is controlled by the controller 2 to drive the mounting frame 3 to slide on the base 1. The motor in the fixed frame 14 is started synchronously to drive the rotation of the threaded rod 15, and the two groups of threaded rods 15 are synchronously rotated under the action of the synchronous belt 17 and the synchronous wheel 16. The auxiliary hydraulic cylinder 13 realizes the stable sliding of the pressure roller 12 driven by the mounting frame 3. Under the action of the two groups of threaded rods 15 and the mounting frame 3, the stability of the pressure roller 12 is guaranteed, and the pressure roller 12 is prevented from tilting under the action of pressure during use, thereby affecting the processing effect of the I-beam.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A height adjustment structure for a cold bending machine, comprising a base (1), characterized in that: A controller (2) is provided above the base (1); a mounting frame (3) is provided above the base (1); four groups of mounting frames (3) are provided; the four groups of mounting frames (3) are symmetrically distributed; two groups of limiting rollers (4) are provided on the four groups of mounting frames (3); two groups of symmetrically distributed screw rods (8) are provided on the mounting frames (3); the upper ends of the two groups of screw rods (8) are sleeved with driving wheels (9); a driving chain (10) is provided in the mounting frames (3); the driving chain (10) is respectively connected to the two groups of driving wheels (9); a positioning frame (11) is provided above the base (1); a pressure roller (12) is fixedly installed on the positioning frame (11); a hydraulic cylinder (13) is provided above the base (1); two groups of symmetrically distributed fixing frames (14) are fixedly installed on the base (1); two groups of symmetrically distributed threaded rods (15) are provided in the fixing frames (14).

2. A height adjustment structure for a cold bending machine according to claim 1, characterized in that: The two groups of limiting rollers (4) are both slidably connected to the mounting frame (3), the two ends of the two groups of screw rods (8) respectively pass through the mounting frame (3) and are rotatably connected to the mounting frame (3) through bearings, and the two groups of screw rods (8) respectively pass through the two ends of the upper limiting roller (4) and are respectively threadedly connected to the limiting roller (4).

3. The height adjustment structure for a cold bending machine according to claim 1, characterized in that: The two groups of limiting rollers (4) are both provided with a chute (6), and the limiting rollers (4) are sleeved with two groups of symmetrically distributed limiting rings (5), and the two groups of limiting rings (5) are both slidably connected to the limiting rollers (4) through the chute (6), and a bidirectional screw (7) is provided in the limiting rollers (4).

4. The height adjustment structure for a cold bending machine according to claim 3, characterized in that: Both ends of the bidirectional screw (7) respectively penetrate the limiting roller (4) and are rotatably connected to the limiting roller (4) via bearings. The bidirectional screw (7) respectively penetrates two groups of limiting rings (5) and is threadedly connected to the two groups of limiting rings (5).

5. The height adjustment structure for a cold bending machine according to claim 1, characterized in that: The positioning frame (11) is slidably connected to the base (1), the positioning frame (11) is connected to the output end of the piston rod of the hydraulic cylinder (13), the positioning frame (11) is slidably connected to the fixing frame (14), the right ends of the two groups of threaded rods (15) are sleeved with synchronous wheels (16), and a synchronous belt (17) is provided in the fixing frame (14), and the synchronous belt (17) is respectively connected to the two groups of synchronous wheels (16) in a transmission manner.

6. The height adjustment structure for a cold bending machine according to claim 1, characterized in that: Both ends of the two groups of threaded rods (15) respectively penetrate the fixing frame (14) and are rotatably connected to the fixing frame (14) through bearings. The two groups of threaded rods (15) penetrate the positioning frame (11) and are threadedly connected to the positioning frame (11).

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