Gear shifting mechanism structure of main gear box of copper strip rolling mill

Abstract

The invention discloses a gear shifting mechanism structure of a main gear box of a copper strip rolling mill, and relates to the technical field of copper strip rolling mills, the gear shifting mechanism structure comprises an internal tooth sliding disc and a switching buffer assembly, a wedging groove is formed in the end part of the internal tooth sliding disc, a beryllium copper sliding block is fixed in the wedging groove, and a transmission pin shaft is fixed on the inner side surface of the beryllium copper sliding block; the switching buffer assembly comprises a crank wheel arranged at the end of the inner tooth sliding disc, an eccentric shaft is arranged on the inner side face of the crank wheel, the surface of the eccentric shaft is sleeved with and rotationally connected with a transmission rod, the bottom of the transmission rod is rotationally connected with a piston rod, and the outer wall of the piston rod is sleeved with an oil pipe. According to the gear shifting mechanism structure of the main gear box of the copper strip rolling mill, when the internal tooth sliding disc needs to stop rotating between the low-speed gear and the high-speed gear for switching meshing, the electric telescopic shaft shrinks and is separated from the transmission pin shaft, so that the output shaft of the motor decelerates and stops rotating in a no-load state; and the service life is prevented from being influenced in the frequent stalling process due to high load generated by the influence of high torque.

Description

Technical Field

[0001] The present invention relates to the technical field of copper strip rolling mills, in particular to a main gearbox shifting mechanism structure of a copper strip rolling mill. Background Art

[0002] The shift mechanism uses friction between the bearing and the shaft to transmit torque. However, the speed in the main gearbox exceeds the limit, and the direction of rotation needs to be changed to achieve repeated rolling of the copper strip, causing the bearing to be subjected to large axial and radial loads. The retaining structure of the bearing device is a retaining spring, which is easily deformed or even broken under the action of high axial force. The fit between the bearing and the shaft is clear, which intensifies the vibration of the bearing and causes the bearing to burn. Ultimately, the rollers are subjected to uneven force and the thickness of the rolled product is uneven.

[0003] Moreover, the internal gear sliding plate in the shift mechanism needs to translate to switch and engage between the high-speed gear and the low-speed gear for transmission. When the internal gear sliding plate translates, it needs to stop quickly, resulting in the output shaft of the main gearbox needing to stop quickly under high load. Frequent high-load rapid stops can easily damage internal parts excessively, thereby affecting their service life. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention provides a main gearbox shifting mechanism structure for a copper strip rolling mill, which solves the problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a copper strip rolling mill main gearbox shift mechanism structure, including an internal gear slide and a switching buffer assembly, the end of the internal gear slide is provided with a fitting groove, and a beryllium copper slider is fixed inside the fitting groove, a transmission pin is fixed on the inner side surface of the beryllium copper slider, the switching buffer assembly includes a crank wheel arranged at the end of the internal gear slide, and an eccentric shaft is provided on the inner side surface of the crank wheel, the surface of the eccentric shaft is sleeved and rotatably connected to a transmission rod, and the bottom of the transmission rod is rotatably connected to a piston rod, the outer wall of the piston rod is sleeved with an oil pipe, and a flow rate control valve is provided in the middle of the inner wall of the oil pipe, a spring is provided at the bottom of the inner wall of the oil pipe, and a liquid feeding plate is fixed on the top of the spring, a plug-in slot is provided at the end of the transmission pin away from the beryllium copper slider, and an electric telescopic shaft is plugged into the inside of the plug-in slot, and the end of the electric telescopic shaft is connected to the motor output shaft.

[0006] Furthermore, the outer diameter of the crank wheel is consistent with the outer diameter of the internal gear sliding plate, and the piston rod is transmission-connected to the internal gear sliding plate through the transmission rod, the eccentric shaft, and the crank wheel.

[0007] Furthermore, the internal gear sliding plate is connected to the motor output shaft through a beryllium copper slider, a transmission pin shaft, and an electric telescopic shaft, and a battery is provided inside the electric telescopic shaft.

[0008] Furthermore, the structural dimensions of the outer port of the liquid feeding plate are adapted to the structural dimensions of the inner port of the oil pipe, and the interior of the oil pipe is injected with oil.

[0009] Furthermore, the flow rate control valve divides the interior of the oil pipe into two spaces, an upper space and an lower space, and the upper space is connected to the lower space through the flow rate control valve.

[0010] Furthermore, the buffer assembly also includes a connecting frame, and the outer wall of the crank wheel is rotatably connected to the connecting frame through a bearing.

[0011] Furthermore, the connecting frame is in a hollow racket-shaped structure, and the lower part of the side surface of the connecting frame is fixedly connected to the outer wall of the oil pipe.

[0012] Furthermore, a high-speed gear is provided on one side of the internal-tooth sliding disc, and a low-speed gear is provided on the other side of the internal-tooth sliding disc.

[0013] Furthermore, the internal gear sliding plate is meshed with the high-speed gear and the low-speed gear, and the internal gear sliding plate can only mesh with one of the high-speed gear or the low-speed gear at a time.

[0014] Furthermore, the internal gear sliding plate and the motor output shaft are rotatably connected to the same bracket, and a pushing device is provided on one side of the bracket to control the internal gear sliding plate to translate and switch between the low-speed gear and the high-speed gear.

[0015] The present invention provides a main gearbox shift mechanism structure for a copper strip rolling mill, which has the following beneficial effects:

[0016] 1. The shift mechanism structure of the main gearbox of the copper strip rolling mill is such that when the internal gear slide plate needs to stop rotating to switch engagement between the low-speed gear and the high-speed gear, the electric telescopic shaft contracts and separates from the transmission pin shaft, allowing the motor output shaft to decelerate and stop in a no-load state, thereby preventing it from being affected by high torque and generating high load, which would affect its service life during frequent stops.

[0017] 2. The shift mechanism structure of the main gearbox of the copper strip rolling mill is such that after the transmission pin shaft is separated from the electric telescopic shaft, the flow rate control valve is used to gradually reduce the opening through which the oil passes to slow down the oil flow rate, thereby causing the rotation speed of the internal gear slide to slow down as the flow rate control valve is reduced, thereby greatly shortening the time required for the internal gear slide to stop, and improving the speed of switching engagement between the internal gear slide and the low-speed gear and the high-speed gear without affecting the service life of the internal gear slide and the motor output shaft. In addition, the beryllium copper slider is a highly wear-resistant material, thereby improving the load-bearing capacity and preventing it from breaking during the transmission process and affecting the roller operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic top view of the internal gear slide of a shift mechanism structure of a main gearbox of a copper strip rolling mill according to the present invention;

[0019] Figure 2 This is a schematic diagram of the internal structure of the oil pipe of a shift mechanism structure of a main gearbox of a copper strip rolling mill according to the present invention;

[0020] Figure 3 This is a schematic diagram of the end face structure of a transmission pin shaft of a main gearbox shifting mechanism structure of a copper strip rolling mill according to the present invention;

[0021] Figure 4 This is a schematic diagram of the internal structure of a crank wheel of a shifting mechanism structure of a main gearbox of a copper strip rolling mill according to the present invention;

[0022] Figure 5 This is a schematic structural diagram of the back side of a connecting frame of a main gearbox shifting mechanism structure of a copper strip rolling mill according to the present invention.

[0023] In the figure: 1. Internal gear sliding plate; 2. Fitting groove; 3. Beryllium copper slider; 4. Transmission pin; 5. Switching buffer assembly; 501. Crank pulley; 502. Eccentric shaft; 503. Transmission rod; 504. Piston rod; 505. Oil pipe; 506. Flow control valve; 507. Spring; 508. Liquid feeding plate; 509. Connecting frame; 6. Plug-in slot; 7. Electric telescopic shaft; 8. Motor output shaft; 9. High-speed gear; 10. Low-speed gear. DETAILED DESCRIPTION

[0024] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0025] like Figure 1-Figure 5As shown, the present invention provides a technical solution: a shift mechanism structure of a main gearbox of a copper strip rolling mill, comprising an inner gear slide 1 and a switching buffer assembly 5, wherein a fitting groove 2 is provided at the end of the inner gear slide 1, and a beryllium copper slider 3 is fixed inside the fitting groove 2, and a transmission pin 4 is fixed to the inner side of the beryllium copper slider 3, and the switching buffer assembly 5 comprises a crank wheel 501 provided at the end of the inner gear slide 1, and an eccentric shaft 502 is provided on the inner side of the crank wheel 501, and a transmission rod 503 is sleeved on the surface of the eccentric shaft 502 and rotatably connected, and the transmission rod The bottom of 503 is rotatably connected to a piston rod 504. The outer wall of the piston rod 504 is sheathed with an oil pipe 505, and a flow rate control valve 506 is provided in the middle of the inner wall of the oil pipe 505. A spring 507 is provided at the bottom of the inner wall of the oil pipe 505, and a liquid feeding plate 508 is fixed to the top of the spring 507. A plug-in slot 6 is provided at the end of the transmission pin shaft 4 away from the beryllium copper slider 3, and an electric telescopic shaft 7 is plugged into the inside of the plug-in slot 6. The end of the electric telescopic shaft 7 is connected to the motor output shaft 8. A high-speed gear 9 is provided on one side of the internal gear slide 1. , and a low-speed gear 10 is provided on the other side of the internal gear slide 1, the internal gear slide 1 is meshed with the high-speed gear 9 and the low-speed gear 10, and the internal gear slide 1 can only be meshed with one of the high-speed gear 9 or the low-speed gear 10 at a time, the internal gear slide 1 and the motor output shaft 8 are rotatably connected to the same bracket, and a pushing device is provided on one side of the bracket to control the internal gear slide 1 to translate between the low-speed gear 10 and the high-speed gear 9 for switching, the outer diameter of the crank wheel 501 is consistent with the outer diameter of the internal gear slide 1, and the piston rod 504 is connected to the internal gear slide 1 through the transmission rod 503, the eccentric shaft 502, and the crank pulley 501 are in driving connection with the internal gear slide plate 1. The internal gear slide plate 1 is in driving connection with the motor output shaft 8 via the beryllium copper slider 3, the transmission pin 4, and the electric telescopic shaft 7. A battery is provided inside the electric telescopic shaft 7. The outer port structure dimensions of the liquid feeding plate 508 match the inner port structure dimensions of the oil pipe 505. The oil pipe 505 is filled with oil. The flow rate control valve 506 divides the interior of the oil pipe 505 into upper and lower spaces. The upper space is connected to the lower space through the flow rate control valve 506.

[0026] The specific operation is as follows: the electric telescopic shaft 7 is inserted into the plug-in slot 6 or pulled out from the plug-in slot 6 by its own telescopic movement, thereby realizing the plugging and separation of the electric telescopic shaft 7 and the transmission pin shaft 4. Since the output shaft of the main gearbox, that is, the motor output shaft 8, drives the transmission pin shaft 4 to rotate through the electric telescopic shaft 7, when it is necessary to move the transmission pin shaft 4 so that the internal gear slide 1 switches the meshing between the low-speed gear 10 and the high-speed gear 9 to realize the repeated rolling of the copper strip, when the transmission pin shaft 4 switches the gear meshing, the electric telescopic shaft 7 contracts so that it is separated from the transmission pin shaft 4. At this time, the motor output shaft 8 stops rotating in a no-load state, thereby reducing the torque, and the transmission pin shaft 4 is in the inertia state. The crank wheel 501 still keeps rotating under the action of the force, and when the transmission pin shaft 4 needs to stop, the opening of the flow rate control valve 506 gradually becomes smaller. At this time, the crank wheel 501 still keeps rotating with the transmission pin shaft 4. At the same time, the flow rate control valve 506 opening becomes smaller, resulting in a decrease in the flow rate of the oil from the upper space to the lower space, thereby slowing down the descending speed of the piston rod 504, slowing down the rotation speed of the beryllium copper slider 3, the transmission pin shaft 4, and the internal gear slide plate 1, and the transmission pin shaft 4 reduces its rotation speed due to the slowing oil flow rate until the opening of the flow rate control valve 506 is closed. At this time, the oil cannot flow down, thereby stopping the transmission pin shaft 4. The beryllium copper slider 3 is made of a highly wear-resistant material, thereby improving the load-bearing capacity.

[0027] After the internal gear slide 1 and the motor output shaft 8 stop rotating, the two translate together. During the translation process, the flow rate control valve 506 is fully opened, causing the spring 507 to stretch from the contracted state, and when stretching, it pushes the liquid delivery plate 508 on its top, thereby sending the oil in the lower space back to the upper space. Then, after the gear switching is completed, the electric telescopic shaft 7 extends and connects with the transmission pin shaft 4 and resumes the rotation of the internal gear slide 1 through the motor output shaft 8. During the rotation of the internal gear slide 1, the flow rate control valve 506 is fully opened, causing the piston rod 504 to adapt to the speed of the internal gear slide 1 to rise and fall until entering the next switching process.

[0028] Based on the above description, in the present invention, when the internal gear sliding plate 1 needs to stop rotating and switch between the low-speed gear 10 and the high-speed gear 9, the electric telescopic shaft 7 is retracted and separated from the transmission pin shaft 4, so that the motor output shaft 8 is decelerated and stopped in an unloaded state, thereby preventing it from being affected by high torque and generating high load, thereby reducing its service life during frequent stops;

[0029] After the transmission pin shaft 4 is separated from the electric telescopic shaft 7, the flow rate control valve 506 is used to gradually reduce the opening through which the oil passes to slow down the oil flow rate, so that the rotation speed of the internal gear slide 1 slows down as the flow rate control valve 506 is reduced, thereby greatly shortening the time required for the internal gear slide 1 to stop rotating, and improving the speed of the internal gear slide 1 switching engagement between the low-speed gear 10 and the high-speed gear 9 without affecting the service life of the internal gear slide 1 and the motor output shaft 8.

[0030] like Figure 1-Figure 5 As shown, the switching buffer assembly 5 further includes a connecting frame 509. The outer wall of the crank wheel 501 is rotatably connected to the connecting frame 509 via a bearing. The connecting frame 509 is a hollow racket-shaped structure, and the lower side of the connecting frame 509 is fixedly connected to the outer wall of the oil pipe 505.

[0031] The specific operation is as follows: the connecting frame 509 is rotationally connected to the crank wheel 501. When the crank wheel 501 rotates synchronously with the inner gear slide 1, the connecting frame 509 does not rotate. During the translation of the inner gear slide 1, the connecting frame 509 translates accordingly, and the bottom side of the connecting frame 509 is fixedly connected to the outer wall of the oil pipe 505 to provide limiting support for the oil pipe 505.

[0032] In summary, the shifting mechanism structure of the main gearbox of the copper strip rolling mill is as follows: when in use, the motor output shaft 8 first drives the transmission pin shaft 4 to rotate through the electric telescopic shaft 7. When the transmission pin shaft 4 needs to be moved so that the internal gear slide 1 switches the meshing between the low-speed gear 10 and the high-speed gear 9 to realize the repeated rolling of the copper strip, when the transmission pin shaft 4 switches the gear meshing, the electric telescopic shaft 7 contracts so that it is separated from the transmission pin shaft 4. At this time, the motor output shaft 8 stops rotating in an unloaded state, thereby reducing the torque, while the transmission pin shaft 4 still keeps rotating under the action of inertia, and When the driving pin 4 needs to stop rotating, the opening of the flow rate control valve 506 gradually becomes smaller. At this time, the crank wheel 501 still rotates with the driving pin 4. At the same time, the opening of the flow rate control valve 506 becomes smaller, resulting in a decrease in the flow rate of the oil from the upper space to the lower space, thereby slowing down the descending speed of the piston rod 504, causing the rotation speed of the beryllium copper slider 3, the driving pin 4, and the internal gear slide 1 to slow down. The driving pin 4 reduces its rotation speed due to the slowed oil flow rate until the opening of the flow rate control valve 506 is closed. At this time, the oil cannot flow down, causing the driving pin 4 to stop rotating.

[0033] After the internal gear slide 1 and the motor output shaft 8 stop rotating, the two translate together. During the translation process, the flow rate control valve 506 is fully opened, causing the spring 507 to stretch from the contracted state, and when stretching, it pushes the liquid delivery plate 508 on its top, thereby sending the oil in the lower space back to the upper space. Then, after the gear switching is completed, the electric telescopic shaft 7 extends and connects with the transmission pin shaft 4 and resumes the rotation of the internal gear slide 1 through the motor output shaft 8. During the rotation of the internal gear slide 1, the flow rate control valve 506 is fully opened, causing the piston rod 504 to adapt to the speed of the internal gear slide 1 to rise and fall until entering the next switching process.

[0034] The embodiments of the present invention are presented for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described in order to better illustrate the principles of the invention and its practical application and to enable those skilled in the art to understand the invention and design various embodiments with various modifications as suited for specific applications.

Claims

1. A main gearbox shift mechanism structure for a copper strip rolling mill, comprising an internal gear slide plate (1) and a shift buffer assembly (5), characterized in that: The end of the inner tooth sliding disk (1) is provided with a fitting groove (2), and a beryllium copper slider (3) is fixed inside the fitting groove (2), and a transmission pin (4) is fixed on the inner side surface of the beryllium copper slider (3). The switching buffer assembly (5) includes a crank wheel (501) arranged at the end of the inner tooth sliding disk (1), and an eccentric shaft (502) is arranged on the inner side surface of the crank wheel (501), and a transmission rod (503) is sleeved on the surface of the eccentric shaft (502) and rotatably connected, and the bottom of the transmission rod (503) is rotatably connected to the piston rod (501). 4), an outer wall of the piston rod (504) is provided with an oil pipe (505), and a flow rate control valve (506) is provided in the middle of the inner wall of the oil pipe (505), a spring (507) is provided at the bottom of the inner wall of the oil pipe (505), and a liquid feeding plate (508) is fixed to the top of the spring (507), and a plug-in slot (6) is provided at one end of the transmission pin shaft (4) away from the beryllium copper slider (3), and an electric telescopic shaft (7) is plugged into the inside of the plug-in slot (6), and the end of the electric telescopic shaft (7) is connected to the motor output shaft (8).

2. A copper strip rolling mill main gearbox shift mechanism structure according to claim 1, characterized in that: The outer diameter of the crank wheel (501) is consistent with the outer diameter of the inner gear sliding disk (1), and the piston rod (504) is transmission-connected to the inner gear sliding disk (1) via the transmission rod (503), the eccentric shaft (502), and the crank wheel (501).

3. The main gearbox shift mechanism structure of a copper strip rolling mill according to claim 1, characterized in that: The internal gear sliding disc (1) is transmission-connected to the motor output shaft (8) via a beryllium copper slider (3), a transmission pin shaft (4), and an electric telescopic shaft (7), and a battery is provided inside the electric telescopic shaft (7).

4. The main gearbox shift mechanism structure of a copper strip rolling mill according to claim 1, characterized in that: The structural dimensions of the outer opening of the liquid delivery plate (508) are adapted to the structural dimensions of the inner opening of the oil pipe (505), and the interior of the oil pipe (505) is injected with oil.

5. The main gearbox shift mechanism structure of a copper strip rolling mill according to claim 1, characterized in that: The flow rate control valve (506) divides the interior of the oil pipe (505) into two spaces, an upper space and an lower space, and the upper space is connected to the lower space through the flow rate control valve (506).

6. The copper strip rolling mill main gearbox shift mechanism structure according to claim 1, characterized in that: The buffer assembly (5) further comprises a connecting frame (509), and the outer wall of the crank wheel (501) is rotatably connected to the connecting frame (509) via a bearing.

7. The copper strip rolling mill main gearbox shift mechanism structure according to claim 6, characterized in that: The connecting frame (509) is in a hollow racket-shaped structure, and the lower side of the connecting frame (509) is fixedly connected to the outer wall of the oil pipe (505).

8. The copper strip rolling mill main gearbox shift mechanism structure according to claim 1, characterized in that: A high-speed gear (9) is provided on one side of the internal-tooth sliding disc (1), and a low-speed gear (10) is provided on the other side of the internal-tooth sliding disc (1).

9. The copper strip rolling mill main gearbox shift mechanism structure according to claim 8, characterized in that: The internal gear sliding plate (1) is meshed with the high-speed gear (9) and the low-speed gear (10), and the internal gear sliding plate (1) can only mesh with one of the high-speed gear (9) or the low-speed gear (10) at a time.

10. The copper strip rolling mill main gearbox shift mechanism structure according to claim 9, characterized in that: The inner gear sliding disc (1) and the motor output shaft (8) are rotatably connected to the same bracket, and a pushing device is provided on one side of the bracket to control the inner gear sliding disc (1) to translate between the low-speed gear (10) and the high-speed gear (9) for switching.

Images