Novel lifting transmission system of coarse straightening machine

Abstract

A novel lifting transmission system of a rough straightening machine comprises a rack, a workbench is arranged on the rack, a working roller is installed on the workbench, a cross beam is installed above the workbench, an installation frame used for installing a flattening roller is arranged between the cross beam and the workbench, and the installation frame can ascend and descend. Two sets of turbine speed reducers are arranged at the two ends of the cross beam, one set of turbine speed reducers is connected with a driving motor, and the two sets of turbine speed reducers are connected through a coupler. The output end of the turbine speed reducer faces the mounting frame and is provided with a connecting shaft, a lead screw is detachably fixed to the bottom end of the connecting shaft, and lifting nuts in threaded connection with the lead screw are fixedly mounted at the two ends of the mounting frame. By means of the technical scheme, the requirements for the power and the rotating speed of the driving motor are lowered, even if power failure occurs, threaded connection can still be in a self-locking state, connection between the lead screw and the speed reducer is facilitated, the lead screw can be detached only by opening the locking assembly when the lead screw is overhauled or replaced, and the situation that the whole speed reducer is completely detached is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of rough leveling machines, in particular to a novel lifting transmission system for rough leveling machines. Background Art

[0002] The rough leveler is also called the straightening machine. It is mainly used for the unwinding and leveling of steel or other coiled materials. It can also be used for plates of various sizes cut into blocks. It is mainly done by setting a number of working rollers on the workbench and a number of flattening rollers above the gaps between the working rollers. The working rollers provide power to drive the plates forward, and the squeezing of the working rollers and the flattening rollers completes the leveling work.

[0003] In order to adapt to the leveling of plates of different thicknesses, the flattening rollers of existing rough leveling machines are usually arranged in a liftable form, and can adjust the distance between them and the working rollers. For example, Chinese Patent No. CN202222117925.7 discloses a novel adjustment device for the support rollers of a plate leveling machine, which mainly drives the flattening rollers to rise and fall by setting an electric cylinder. Although the adjustment of the leveling spacing is achieved, the applicant has previously used this driving method. During use, it was found that due to the heavy weight of the movable frame and the flattening rollers and other components, the power and speed of the electric cylinder drive motor are required to be relatively high. In addition, during the process of straightening and conveying the plate, a radial force will be generated between the flattening rollers and the plate. Although the force is small, the leveling work is relatively long, so that the output end of the electric cylinder is continuously subjected to radial force, which will cause the output end to be offset and accelerate the loss of the electric cylinder. In addition, once a sudden power outage occurs, the electric cylinder will fail, and the gravity of the flattening rollers and other components may damage the electric cylinder, increasing the cost of enterprise operation. Utility Model Content

[0004] In order to solve the technical problems existing in the above-mentioned background technology, the utility model provides a novel lifting transmission system of a rough leveling machine.

[0005] The technical solution of this utility model is as follows:

[0006] A novel lifting transmission system of a roughing leveler comprises a frame, a workbench is arranged on the frame, and a working roller is installed on the workbench, a crossbeam is installed above the workbench, and a mounting frame for installing a flattening roller is arranged between the crossbeam and the workbench, and the mounting frame can be lifted and lowered;

[0007] Two sets of worm gear reducers are arranged at both ends of the crossbeam, one of which is connected to a driving motor, and the two sets of worm gear reducers are connected via a coupling;

[0008] The output end of the worm reducer faces the mounting frame and is installed with a connecting shaft, a lead screw is detachably fixed to the bottom end of the connecting shaft, and lifting nuts threadably connected to the lead screw are fixedly installed at both ends of the mounting frame.

[0009] In order to reduce the damage to the meshing position of the lead screw and the nut caused by the weight of the mounting frame, a plurality of balancing oil cylinders are installed on the crossbeam, and the output ends of the balancing oil cylinders penetrate the crossbeam and are connected to the mounting frame. In addition, the setting of the balancing oil cylinders can share the tiny radial force generated during the leveling process.

[0010] In order to conveniently protect the connecting shaft, a sleeve is installed in the crossbeam, and the connecting shaft passes through the sleeve and is connected to the lead screw.

[0011] In order to facilitate the installation of the locking assembly, a limit ring is provided on the outer edge surface of the upper end of the screw where no thread is provided, and a locking assembly is provided between the limit ring and the sleeve to fix the screw and the connecting shaft.

[0012] The specific design of the locking assembly is that the locking assembly includes two mutually hinged clamps, and the ends of the two clamps away from the hinge point are detachably fixed by a fixing piece;

[0013] The bottom end surfaces of the two clamps are both equipped with a plurality of limit columns, and locking bolts are arranged through the limit columns along the extension direction of the clamp diameter, and the locking bolts are threadedly connected to the limit columns, and threaded holes matching the locking bolts are opened at corresponding positions of the lead screw.

[0014] The specific design of the fixing piece is that the fixing piece includes a docking block arranged at one end of two clamps away from the hinge point, and an installation groove is opened in the docking block, and the installation groove of one docking block is rotatably connected to the end away from the docking with a fixing bolt, and is fixed to the other docking block by the cooperation of a locking nut and a fixing bolt.

[0015] In order to facilitate the application of force to the nut, the locking nut adopts a butterfly nut.

[0016] In order to strengthen the connection strength between the lead screw and the connecting shaft and ensure that there is no relative rotation between the two, a mounting ring is fixedly connected to the upper end face of the lead screw, and a plurality of limit blocks are arranged in an array on the upper end face of the mounting ring, and a plurality of limit grooves matching the limit blocks are provided on the bottom end face of the connecting shaft.

[0017] In order to improve the stability of the locking assembly, the sum of the lengths of the clamp and the limiting column along the extending direction of the connecting shaft is consistent with the distance between the sleeve and the limiting ring.

[0018] The beneficial effects of the utility model are as follows: the utility model is a novel lifting transmission system for a rough leveling machine. Firstly, the leveling of the plate can be achieved through the design of the working roller and the flattening roller; secondly, the screw is driven by two sets of reducers, and then the mounting frame is driven to rise and fall through the threaded connection with the lifting nut, and then the flattening roller in the mounting frame is driven to rise and fall, which realizes the adjustment of the distance between the flattening roller and the working roller, and facilitates the leveling of plates of different thicknesses; on the other hand, the electric cylinder in the prior art is replaced, and the reduction gear is used in combination with the screw nut for lifting, which reduces the power and speed requirements of the driving motor. Even if a power outage occurs, the threaded connection can still be in a self-locking state, which is beneficial to protecting the transmission mechanism and the flattening roller and other components; finally, the detachable screw is set to facilitate the connection between the screw and the reducer, and when the screw is repaired or replaced, only the locking assembly needs to be opened to disassemble the screw, avoiding the situation where the entire reducer is completely disassembled, and even if the small radial force generated will damage the screw, due to its low cost and convenient replacement, it can save a lot of time and cost compared with the replacement and maintenance of the electric cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] By reading the detailed description of the preferred embodiment below, the scheme and advantages of the present application will become clear to those skilled in the art. The accompanying drawings are only used to illustrate the preferred embodiment and are not considered to be limiting of the present invention.

[0020] In the attached picture:

[0021] Figure 1 This is a schematic diagram of the overall structure of the rough leveling machine;

[0022] Figure 2 This is the enlarged view of point A;

[0023] Figure 3 This is an enlarged view of point B;

[0024] Figure 4 It is a bottom view of the locking structure;

[0025] Figure 5 It is a schematic diagram of the structure of the mounting ring and the limit block;

[0026] The components represented by the reference numerals in the figure are:

[0027] 1. Frame; 2. Workbench; 3. Crossbeam; 4. Mounting frame; 5. Turbine reducer; 6. Drive motor; 7. Coupling; 8. Connecting shaft; 9. Screw; 10. Lifting nut; 11. Balance cylinder; 12. Sleeve; 13. Limit ring; 14. Locking assembly; 141. Clamp; 142. Limit column; 143. Locking bolt; 144. Docking block; 145. Mounting groove; 146. Fixing bolt; 147. Locking nut; 15. Threaded hole; 16. Mounting ring; 17. Limit block; 18. Limit groove. DETAILED DESCRIPTION

[0028] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings.

[0029] Example

[0030] As mentioned in the background technology, a rough leveling machine is needed for plate processing, and in order to make the equipment more flexible, the flattening roller is usually designed to be able to rise and fall. However, as described in the comparative patent, the driving method using an electric cylinder has many defects, such as the required motor power and speed are high, and the radial force will accelerate the loss of the electric cylinder. The inventor used the existing conditions to make improvements and designed a new transmission system, which is described in detail below with reference to the diagram.

[0031] This embodiment provides a new type of roughing machine lifting transmission system, see Figure 1 A new type of lifting transmission system for a rough leveling machine includes a frame 1, a workbench 2 is arranged on the frame 1, and a working roller is installed on the workbench 2, a crossbeam 3 is installed above the workbench 2, and a mounting frame 4 for mounting a flattening roller is arranged between the crossbeam 3 and the workbench 2, and the mounting frame 4 can be raised and lowered, and the distance between the flattening roller and the working roller can be adjusted by lifting and lowering, thereby adapting to the flattening work of plates with different thicknesses. The working roller and the flattening roller are shown in the figure. Because the design of the workbench 2, the installation method of the working roller and the workbench 2, and the installation method of the flattening roller and the mounting frame 4 are all relatively mature technologies in this field, this solution does not make improvements to this part, so the existing technology can be used without redundant description.

[0032] Different from the existing roughing machine, in this scheme, a crossbeam 3 is set, and two groups of worm reducers 5 are set at both ends of the crossbeam 3, close to the edge of the crossbeam 3 and symmetrical with respect to the center line of the crossbeam 3, that is, they are set in the form of a worm gear, and in order to provide power, one group is connected to a drive motor 6, and in order to enable transmission between the two groups of worm reducers 5 so that the output ends rotate synchronously, the two groups of worm reducers 5 are connected by a coupling 7, and the coupling 7 adopts the existing connection method.

[0033] The main output component is a lead screw 9, combined with Figure 3Specifically, the output end of the turbine reducer 5 faces the mounting frame 4 and is equipped with a connecting shaft 8. The connecting shaft 8 and the output end of the reducer can be connected by a shaft key, and in order to protect the rotating connecting shaft 8, a sleeve 12 is installed in the crossbeam 3, the sleeve 12 is fixedly connected to the crossbeam 3, and the connecting shaft 8 passes through the sleeve 12, and the bottom end of the connecting shaft 8 is detachably fixed with a lead screw 9, the connecting shaft 8 passes through the sleeve 12 and is connected to the lead screw 9, that is, the connection position between the connecting shaft 8 and the lead screw 9 is located outside the sleeve 12, and lifting nuts 10 threadedly connected to the lead screw 9 are fixedly installed at both ends of the mounting frame 4. When it is necessary to adjust the height of the flattening roller, the driving motor 6 is started, and the connecting shaft 8 is driven to rotate through the turbine reducer 5, and then the lead screw 9 is driven to rotate, and the mounting frame 4 is driven to move along with the lifting nut 10 under the action of the thread, and at the same time, the lead screw 9 on the other side is driven to rotate synchronously through the coupling 7, so that the two drive the mounting frame 4 to rise and fall at the same time, ensuring the stability of the rise and fall.

[0034] On the basis of the above structure, a plurality of balancing cylinders 11 are installed on the cross beam 3, and the output end of the balancing cylinder 11 passes through the cross beam 3 and is connected to the mounting frame 4, so as to provide pulling force to the mounting frame 4. By setting the balancing cylinder 11, the gravity of the flattening roller and other components borne by the two lead screws 9 can be reduced, and the tiny radial force generated by the plate and the roller during the leveling process can be shared, which is more conducive to protecting the cooperation between the lead screw 9 and the nut.

[0035] As mentioned above, the lead screw 9 and the bottom end of the connecting shaft 8 are detachably connected, which is also one of the main design points of this solution. Figure 2-Figure 4 , Figure 2 This is a schematic diagram of the installation of the locking assembly 14. Figure 3This is a cross-sectional view of the installation of the locking assembly 14. Since the lead screw 9 is the main output component and frequent adjustment of the height of the mounting bracket 4 will accelerate the wear of the lead screw 9, it needs to be maintained and replaced regularly. The existing lead screw 9 is directly connected to the inside of the reducer, so when removing the lead screw, it is necessary to disassemble the entire turbine reducer 5 and the crossbeam 3, and then disassemble the turbine reducer 5 again. The steps are very cumbersome. Therefore, a locking assembly 14 is designed in this scheme to detachably fix the lead screw 9 to the connecting shaft 8, and a limiting ring 13 is provided on the outer edge surface of the position where no thread is provided at the upper end of the lead screw 9. The locking assembly 14 is installed between the sleeve 12 and the limiting ring 13. Specifically, the locking assembly 14 includes two mutually hinged clamps 141. The inner diameters of the two clamps 141 form a circle, which is used to adapt to the outer diameter of the connecting shaft 8, and the two clamps 141 are away from each other. One end of the hinge point is detachably fixed by a fixing piece, and multiple limit columns 142 are installed on the bottom end surfaces of the two clamps 141. At least two limit columns 142 are arranged at the bottom of each clamp 141 to ensure the locking effect, and a locking bolt 143 is arranged through the limit column 142 along the diameter extension direction of the clamp 141, and the locking bolt 143 is threadedly connected with the limit column 142, and a threaded hole 15 adapted to the locking bolt 143 is opened at the corresponding position of the screw 9. When fixing the connecting shaft 8 and the screw 9, first open the fixing piece so that the two clamps 141 are opened around the hinge point, and then wrap the two clamps 141 around the outside of the connecting shaft 8. At this time, the limit column 142 is in contact with the outer edge surface of the screw 9, align the locking bolt 143 with the threaded hole 15 one by one, lock the fixing piece, screw the locking bolt 143 into the threaded hole 15, and complete the fixation.

[0036] It should be noted that the side of the limiting column 142 that contacts the lead screw 9 is configured to be arc-shaped to ensure that the two are compatible with each other and improve the locking effect.

[0037] On the basis of the above structure, the sum of the lengths of the clamp 141 and the limiting column 142 along the extension direction of the connecting shaft 8 is consistent with the distance between the sleeve 12 and the limiting ring 13, thereby ensuring that the clamp 141 and the limiting column 142 can be just located between the sleeve 12 and the limiting ring 13, so that the sleeve 12 and the limiting ring 13 can limit the upper and lower ends of the two, thereby improving the stability of the fixing of the connecting shaft 8 and the screw 9.

[0038] Furthermore, in the present solution, in order to conveniently and quickly open or fix the two clamps 141, the fixing member includes a docking block 144 arranged at one end of the two clamps 141 away from the hinge point, and a mounting groove 145 is provided in the docking block 144, wherein the mounting groove 145 of one docking block 144 is rotatably connected to the end away from the docking with a fixing bolt 146, the length of the fixing bolt 146 is greater than the sum of the lengths of the two docking blocks 144, and is fixed to the other docking block 144 by the cooperation of a locking nut 147 and the fixing bolt 146, and in order to facilitate the application of force, the locking nut is set in the form of a butterfly nut, that is, the fixing bolt 146 is rotated into the other mounting groove 145, and the fixing bolt 146 extends beyond the other mounting groove 145, and a locking nut is installed on the outside, and the locking nut is squeezed and fixed to the other docking block 144.

[0039] Based on the above structure, combined with Figure 5 The upper end surface of the screw 9 is fixedly connected with a mounting ring 16, and a plurality of limit blocks 17 are arranged in an array on the upper end surface of the mounting ring 16, and a plurality of limit grooves 18 adapted to the limit blocks 17 are provided on the bottom end surface of the connecting shaft 8, and the shapes and sizes of the two are matched. The mounting ring 16 can be detachably fixed to the top end of the screw 9 by means of bolts or the like, so that when the screw 9 is replaced, the limit block 17 can continue to be used because it has almost no wear. By setting the cooperation between the limit block 17 and the limit groove 18, the stability of the connection between the screw 9 and the connecting shaft 8 can be enhanced, and relative rotation between the screw 9 and the connecting shaft 8 can be further avoided.

Claims

1. A novel lifting transmission system for a roughing leveler, comprising a frame (1), a workbench (2) being arranged on the frame (1), and a working roller being mounted on the workbench (2), characterized in that: A crossbeam (3) is installed above the workbench (2), and a mounting frame (4) for mounting a flattening roller is provided between the crossbeam (3) and the workbench (2), and the mounting frame (4) can be raised and lowered; Two sets of turbine reducers (5) are arranged at both ends of the crossbeam (3), one set of which is connected to a drive motor (6), and the two sets of turbine reducers (5) are connected via a coupling (7); The output end of the turbine reducer (5) faces the mounting frame (4) and is mounted with a connecting shaft (8), a lead screw (9) is detachably fixed to the bottom end of the connecting shaft (8), and lifting nuts (10) threadedly connected to the lead screw (9) are fixedly mounted at both ends of the mounting frame (4).

2. The novel roughing machine lifting transmission system according to claim 1 is characterized in that: A plurality of balancing oil cylinders (11) are installed on the cross beam (3), and the output ends of the balancing oil cylinders (11) penetrate the cross beam (3) and are connected to the mounting frame (4).

3. The new roughing machine lifting transmission system according to claim 1 is characterized in that: A sleeve (12) is installed in the crossbeam (3), and a connecting shaft (8) passes through the sleeve (12) and is connected to the lead screw (9).

4. The novel roughing machine lifting transmission system according to claim 3 is characterized in that: A limit ring (13) is provided on the outer edge surface of the upper end of the lead screw (9) where no thread is provided, and a locking assembly (14) is provided between the limit ring (13) and the sleeve (12) to fix the lead screw (9) and the connecting shaft (8).

5. The novel roughing machine lifting transmission system according to claim 4 is characterized in that: The locking assembly (14) comprises two mutually hinged clamps (141), and one end of the two clamps (141) away from the hinge point is detachably fixed by a fixing piece; A plurality of limiting columns (142) are installed on the bottom end surfaces of the two clamps (141), and locking bolts (143) are arranged along the diameter extension direction of the clamps (141) and penetrate the limiting columns (142), and the locking bolts (143) are threadedly connected to the limiting columns (142), and threaded holes (15) adapted to the locking bolts (143) are opened at corresponding positions of the lead screw (9).

6. The novel lifting transmission system of the roughing machine according to claim 5 is characterized in that: The fixing member comprises a docking block (144) arranged at one end of two clamps (141) away from the hinge point, and a mounting groove (145) is provided in the docking block (144), wherein the mounting groove (145) of one docking block (144) is rotatably connected to an end away from the docking with a fixing bolt (146), and is fixed to the other docking block (144) through the cooperation of a locking nut (147) and the fixing bolt (146).

7. The novel lifting transmission system of the roughing leveler according to claim 6 is characterized in that: The locking nut (147) is a butterfly nut.

8. The novel lifting transmission system of the roughing leveler according to claim 1 is characterized in that: The upper end surface of the lead screw (9) is fixedly connected with a mounting ring (16), and a plurality of limit blocks (17) are arranged in an array on the upper end surface of the mounting ring (16), and a plurality of limit grooves (18) adapted to the limit blocks (17) are provided on the bottom end surface of the connecting shaft (8).

9. The novel lifting transmission system of the roughing leveler according to claim 5 is characterized in that: The sum of the lengths of the clamp (141) and the limiting column (142) along the extension direction of the connecting shaft (8) is consistent with the distance between the sleeve (12) and the limiting ring (13).

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