Double-station horizontal and vertical rolling mill gearbox

Abstract

The utility model discloses a double-station horizontal and vertical rolling mill gearbox, which relates to the technical field of horizontal and vertical rolling mill gearboxes, and comprises a box body and an input component arranged in the box body, the input component comprises a first input shaft and a second input shaft which are in transmission connection and are arranged at an interval, and the first input shaft is used for input of a vertical station; the second input shaft is used for input of a horizontal station; the idler shaft is arranged on the box body; the input assembly is arranged on the box body, the output assembly is arranged on the box body and comprises a first output shaft and a second output shaft, and the technical problems that an existing horizontal and vertical rolling mill gearbox is single in structure, single in arrangement form, low in expandability and limited in application range are solved. And the distance between the input part and the output part is increased, so that the production line can be arranged more flexibly. And the first input shaft and the second input shaft are respectively used for the input of a vertical station and the input of a horizontal station, so that the flexibility of production line arrangement is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gear boxes for horizontal and vertical rolling mills, in particular to a gear box for a double-station horizontal and vertical rolling mill. Background Art

[0002] The gearbox of the double-station horizontal and vertical rolling mill is widely used in the rolling process of bars, wires, pipes, etc. It needs to meet both horizontal and vertical rolling conditions. Its design is more complicated than that of the general horizontal or vertical rolling mill gearbox. The horizontal and vertical rolling mill is mainly used at the end of the finishing section. The reduction ratio is generally not large, and it usually needs to be used in conjunction with a bevel gearbox.

[0003] However, the existing horizontal and vertical rolling mill gearbox structure has the following defects: the existing horizontal and vertical rolling mill gearbox has a single structure, a relatively simple layout, low scalability, and limited application range. Therefore, a double-station horizontal and vertical rolling mill gearbox is proposed to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a double-station horizontal and vertical rolling mill gearbox, which solves the technical problems of the existing horizontal and vertical rolling mill gearbox having a single structure, a relatively simple layout, weak scalability and a limited application range.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a double-station horizontal and vertical rolling mill gearbox comprising:

[0006] Box;

[0007] An input assembly, arranged in the box, comprising a first input shaft and a second input shaft which are transmission-connected and spaced apart, wherein the first input shaft is used for input of a vertical station, and the second input shaft is used for input of a horizontal station;

[0008] An idler shaft, disposed on the housing and drivingly connected to the second input shaft;

[0009] The output assembly is arranged in the housing and comprises a first output shaft and a second output shaft. The first output shaft is drivingly connected to the idler shaft and the second output shaft.

[0010] Preferably, a first gear is sleeved on the circumferential side surface of the first input shaft, a second gear and a third gear are sleeved on the circumferential side surface of the second input shaft, and the first gear is meshingly connected to the second gear.

[0011] Preferably, an idler wheel is sleeved on the circumferential side surface of the idler wheel shaft, the idler wheel is fixed on the idler wheel shaft through a first flat key, and the idler wheel is meshingly connected to the third gear.

[0012] Preferably, a fourth gear and a fifth gear are sleeved on the circumferential side surface of the first output shaft, a sixth gear is sleeved on the circumferential side surface of the second output shaft, and the fifth gear is meshingly connected to the sixth gear.

[0013] Preferably, a first oil slinger is also installed on the first input shaft, and the first oil slinger is used to sling lubricating oil toward the first end cover.

[0014] Preferably, the first input shaft and the second input shaft are both connected to the housing via cylindrical bearings and the four-point angular contact bearings.

[0015] Preferably, the first output shaft and the second output shaft are both hollow structures, and a connecting shaft is inserted into the first output shaft and the second output shaft, and the first end of the connecting shaft is connected to a rolling roller.

[0016] Preferably, the second end of the connecting shaft is sleeve-connected to the first half coupling, and the first half coupling is connected to the second half coupling via a second flat key.

[0017] Preferably, an outer circumferential side surface of the connecting shaft is provided with an external spline, and an inner circumferential side surface of the first half coupling is provided with an internal spline, and the external spline is snap-connected to the internal spline.

[0018] Preferably, an output spline sleeve is sleeved on the outer peripheral side surface of one end of the first half coupling, and the output spline sleeve is connected to the outer peripheral side surface of the first output shaft.

[0019] Compared with the above background technology, the utility model provides a double-station horizontal and vertical rolling mill gearbox, which connects the input component and the output component through the idler shaft transmission, and can realize the case of a small transmission ratio, the distance between the input part and the output part is enlarged to meet the requirements of different production lines for the connection size between the input component and the output component. More other equipment can be arranged around the reducer, and the production line can be arranged more flexibly. Moreover, the first input shaft and the second input shaft are used for the input of the vertical station and the input of the horizontal station respectively, so that the gearbox can be arranged horizontally and vertically according to the on-site working conditions, further improving the flexibility of the production line layout and expanding the scope of application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0021] Figure 1 A cross-sectional schematic diagram of a gear box provided by an embodiment of the utility model;

[0022] Figure 2 This is a schematic diagram of the assembly of the gearbox provided by the embodiment of the utility model, wherein A represents the input component and B represents the output component;

[0023] Figure 3 A schematic plan view of a vertical arrangement of the gearbox provided by an embodiment of the utility model;

[0024] Figure 4 A plan view of a horizontally arranged gearbox provided by an embodiment of the utility model;

[0025] Figure 5 A schematic plan view of a gear box provided in an embodiment of the utility model.

[0026] Specifically, 1-first input shaft; 2-first oil slinger; 3-cylindrical bearing; 4-first gear; 5-second gear; 6-four-point angular contact bearing; 7-second input shaft; 8-housing; 9-spacer ring; 10-second oil slinger; 11-idle shaft; 12-bearing; 13-first end cover; 14-idle; 15-second end cover; 16-self-aligning bearing; 17-fourth gear; 18-fifth gear; 19-first output shaft; 20-connecting shaft; 21-pressure plate; 22-second half coupling; 23-first half coupling; 24-first flat key; 25-output spline sleeve; 26-second output shaft; 27-sixth gear; 28-second flat key; 29-double-row tapered bearing; 30-locking nut; 31-third flat key; 32-fourth flat key; 33-bolt; 34-oil inlet; 35-oil return port. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0029] like Figure 1 and Figure 2 As shown, a double-station horizontal and vertical rolling mill gearbox includes: a box body 8, an input assembly, an idler shaft and an output assembly.

[0030] An input assembly is arranged in the housing 8, and the input assembly includes a first input shaft 1 and a second input shaft 7 which are transmission-connected and spaced apart. The first input shaft 1 and the second input shaft 7 are both rotationally connected to the housing 8, and the first input shaft 1 is transmission-connected to the second input shaft 7, wherein the first input shaft 1 is used for input to a vertical station, and the second input shaft 7 is used for input to a horizontal station. The axial direction of the first input shaft 1 is consistent with the axial direction of the second input shaft 7, and the first input shaft 1 and the second input shaft 7 are connected by gear transmission. The first input shaft 1 and the second input shaft 7 are respectively used for input to a vertical station and input to a horizontal station. The gearbox is arranged horizontally and vertically according to the on-site working conditions, which can meet both horizontal and vertical rolling, improve the flexibility of the production line layout, and expand the scope of application.

[0031] An idler shaft 11 is disposed in the housing 8 , the idler shaft 11 is rotatably connected to the housing 8 , and the idler shaft 11 is transmission-connected to the second input shaft 7 , wherein the idler shaft 11 and the second input shaft 7 are connected via gear transmission.

[0032] An output assembly is arranged in the housing 8, and the output assembly includes a first output shaft 19 and a second output shaft 26 arranged on the housing 8, and the first output shaft 19 is connected to the idler shaft 11 and the second output shaft 26 by transmission, wherein the first output shaft 19 and the idler shaft 11 are connected by gear transmission. The input assembly and the output assembly are connected by the idler shaft transmission, that is, the second input shaft 7 and the first output shaft 19 are connected by the idler shaft 11, which can increase the distance between the input part and the output part under a small transmission ratio, meet the requirements of different production lines for the connection size between the input assembly and the output assembly, and allow more other equipment to be arranged around the reducer.

[0033] Among them, the self-aligning bearing 16 and the double-row tapered bearing 29 are installed on the first output shaft 19 and the second output shaft 26. The self-aligning bearing 16 and the double-row tapered bearing 29 are used to fix the first output shaft 19 and the second output shaft 26 to improve the stability of the first output shaft 19 and the second output shaft 26 during operation. The double-row tapered bearing 29 is axially fixed to the box body 8 by a locking nut 30.

[0034] Specifically, the first gear 4 is sleeved on the circumferential side surface of the first input shaft 1, and the first input shaft 1 is connected to the first gear 4 through the third flat key 31. The second gear 5 is sleeved on the circumferential side surface of the second input shaft 7, and the second input shaft 7 is connected to the second gear 5 through the fourth flat key 32. The first gear 4 is meshed and connected to the second gear 5. By changing the number of teeth of the first gear 4 and the second gear 5, the distance between the first input shaft 1 and the second input shaft 7 can be flexibly adjusted to meet the requirements for the spatial layout of the input components under different conditions, thereby ensuring that the gearbox is suitable for a variety of working environments.

[0035] The circumferential side of the second input shaft 7 is sleeved with a third gear, and the third gear is coaxially arranged with the second gear 5. The circumferential side of the idler shaft 11 is sleeved with an idler 14, and the idler 14 is fixed to the idler shaft 11 through the first flat key 24, and the idler 14 is meshed with the third gear. The idler 14 is fixed to the idler shaft 11 through the first flat key 24, wherein the idler 14 not only plays a transmission role, but also expands the center distance between the input component and the output component, meets the requirements of different production lines for the connection size between the input and output, and expands the scope of application of the gearbox. Among them, the fourth gear 17 and the fifth gear 18 are sleeved on the circumferential side of the first output shaft 19, and by adjusting the gear ratio of the fourth gear 17 and the third gear, the reduction ratio of the input component and the output component is accurately adjusted, which plays a role of reducing speed and increasing torque.

[0036] It should be noted that the sixth gear 27 is sleeved on the circumferential side of the second output shaft 26, and the fifth gear 18 is meshed and connected to the sixth gear 27, wherein the gear ratio between the fifth gear 18 and the sixth gear 27 is 1, ensuring that the output power of the first output shaft 19 and the second output shaft 26 is consistent.

[0037] like Figure 3 As shown, when the gearbox is arranged vertically, the first output shaft 19 and the second output shaft 26 are placed vertically, the shaft head of the second input shaft 7 faces upward, and the shaft head of the first input shaft 1 faces downward. The first input shaft 1 is the working end, and the motor power is input through the bevel gearbox. At this time, the oil return port 35 and the oil inlet port 34 are respectively located at the lower right end of the reducer.

[0038] like Figure 4 As shown, when the gearbox is arranged horizontally, the first output shaft 19 and the second output shaft 26 are both placed horizontally, the shaft head of the first input shaft 1 faces left, and the shaft head of the second input shaft 7 faces right, the second input shaft 7 is the working end, and the motor power is input through the bevel gearbox. At this time, the oil return port 35 and the oil inlet port 34 are located at the lower left end of the reducer.

[0039] The first input shaft 1 is also provided with a first oil slinger 2, which is used to sling the lubricating oil to the first end cover 13. When the reducer is working in a vertical condition, the power and torque of the motor are inputted through the third flat key 31 at the shaft head position of the first input shaft 1, the shaft head of the first input shaft 1 faces downward, and the lubricating oil rotates through the first oil slinger 2 and is slinged to the first end cover 13, wherein the first end cover 13 is provided with an oil hole, and the lubricating oil flows to the external oil station through the oil hole on the first end cover 13.

[0040] When the reducer works in a horizontal condition, the power and torque of the motor are inputted through the fourth flat key 32 at the shaft head position of the second input shaft 7, and the first input shaft 1 is in a free state and idles under the drive of the second input shaft 7. The first end of the first input shaft 1 and the first end of the second input shaft 7 are both sleeved with cylindrical bearings 3, and the second end of the second input shaft 7 is both sleeved with cylindrical bearings 3 and four-point angular contact bearings 6, and each cylindrical bearing 3 and four-point angular contact bearing 6 are connected to the box body 8.

[0041] like Figure 5 As shown, specifically, bearings 12 are installed at both ends of the idler shaft 11, and the bearings 12 are locked on the idler shaft 11 through a pressure plate 21 and a bolt 33. At the same time, a distance ring 9 is installed between the idler 14 and the bearing 12, and the distance ring 9 is used to control the distance between the idler 14 and the bearing 12, so as to avoid contact between the idler 14 and the bearing 12, and improve the stability of the idler 14 during operation. Among them, second end covers 15 are arranged at both ends of the idler shaft 11, and the bearing 12 is arranged on the inner side of the second end cover 15. A floating gap a is left between the bearing 12 and the second end cover 15, and the size of the floating gap a is between 0.5-1.5mm, so that the idler shaft 11 can float freely, which is used to compensate for the thermal deformation of each bearing and each shaft, and meet the thermal expansion deformation requirements of each shaft and each bearing, so that the idler 14 and the third gear, the idler 14 and the fourth gear 17 are always in the correct meshing position, so that the tooth surface load is more uniform, and the reliability of the gearbox during operation is effectively improved.

[0042] In addition, the idler shaft 11 is fixed to the housing 8 through two bearings 12, and a second oil slinger 10 is installed between the idler 14 and the bearing 12. The second oil slinger 10 is used to throw the lubricating oil to the second end cover 15, wherein the second end cover 15 is provided with an oil hole, and the lubricating oil flows to the outside oil station through the oil hole on the second end cover 15.

[0043] The output part is a distribution stage, that is, by distributing the torque to the first output shaft 19 and the second output shaft 26, the internal space of the box body 8 is fully utilized, and the structure is more compact. The first output shaft 19 and the second output shaft 26 are both set to hollow structures, and the gearbox has a larger space to accommodate the connecting shaft 20. The connecting shaft 20 is inserted into the first output shaft 19 and the second output shaft 26. The first end of the connecting shaft 20 is connected to the rolling roller. The connecting shaft 20 can pass through the entire reducer and reach the outside of the reducer, thereby making the entire system layout more flexible. Regardless of whether the gearbox is in a vertical working condition or a horizontal working condition, the structural form of the gearbox can be arranged more reasonably, and at the same time, a larger roll changing space is provided, which is convenient for the replacement and maintenance of the rolls.

[0044] The second end of the connecting shaft 20 is sleeve-connected with the first half coupling 23, wherein the outer peripheral side of the connecting shaft 20 is provided with an external spline (not shown in the figure), and the inner peripheral side of the first half coupling 23 is provided with an internal spline (not shown in the figure), and the first half coupling 23 and the connecting shaft 20 are connected by the external spline clamping connection with the internal spline, so as to realize the connection between the first half coupling 23 and the connecting shaft 20, and the first half coupling 23 is connected with the second half coupling 22 through the second flat key 28, wherein the first half coupling 23 and the second half coupling 22 and the motor are respectively located on both sides of the housing 8. Ensure that the connecting shaft 20 can extend to the outside of the reducer, and further expand the roller changing space of the reducer.

[0045] An output spline sleeve 25 is sleeved on the outer peripheral side of one end of the first half coupling 23, and the output spline sleeve 25 is connected to the outer peripheral side of the first output shaft 19, which is used to limit the first half coupling 23, improve the stability of the first half coupling 23 during rotation, and assist the first output shaft 19 to output power to the connecting shaft 20. It should be noted that the output spline sleeve 25 is arranged at the upper end of the gearbox to ensure that when the length of the connecting shaft 20 increases, the deflection generated when the connecting shaft 20 rotates appears outside the reducer, thereby allowing the connecting shaft 20 to have a larger deflection angle and improving the stability of the gearbox during operation. Preferably, a cover box or other structure is provided at the exposed part of the connecting shaft 20, and the exposed part of the connecting shaft 20 is protected by providing a cover box or other structure.

[0046] When the utility model is used, when the reducer is working in a vertical condition, the power and torque of the motor are inputted through the third flat key 31 at the shaft head position of the first input shaft 1, and the first input shaft 1 drives the second output shaft 26 to rotate through the meshing of the first gear 4 and the second gear 5. When the reducer is working in a horizontal condition, the power and torque of the motor are inputted through the fourth flat key 32 at the shaft head position of the second input shaft 7, and the first input shaft 1 is idled under the drive of the second input shaft 7. The second output shaft 26 drives the idler shaft 11 to rotate through the meshing of the third gear and the idler 14, and the idler shaft 11 drives the first output shaft 19 to rotate through the meshing of the fourth gear 17 and the idler 14, and the first output shaft 19 drives the second output shaft 26 to rotate through the meshing of the fifth gear 18 and the sixth gear 27, and the first output shaft 19 and the second output shaft 26 respectively drive the rollers to rotate through the connecting shaft 20 to roll the metal blank.

[0047] In summary, the second input shaft 7 and the first output shaft 19 are connected by the idler shaft 11, so that the distance between the input part and the output part can be enlarged under the condition of small transmission ratio, and the connection size requirements between the input component and the output component of different production lines can be met. The input of the gearbox under horizontal working conditions and the input under vertical working conditions are respectively realized by the first input shaft 1 and the second input shaft 7, which further improves the flexibility of production line layout and expands the scope of application.

[0048] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0049] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the utility model.

Claims

1. A double-station horizontal and vertical rolling mill gearbox, characterized in that: include: Box; An input assembly, arranged in the box, comprising a first input shaft and a second input shaft which are transmission-connected and spaced apart, wherein the first input shaft is used for input of a vertical station, and the second input shaft is used for input of a horizontal station; An idler shaft, disposed on the housing and drivingly connected to the second input shaft; The output assembly is arranged in the housing and comprises a first output shaft and a second output shaft. The first output shaft is drivingly connected to the idler shaft and the second output shaft.

2. A double-station horizontal and vertical rolling mill gearbox according to claim 1, characterized in that: A first gear is sleeved on a circumferential side surface of the first input shaft, a second gear and a third gear are sleeved on a circumferential side surface of the second input shaft, and the first gear is meshedly connected to the second gear.

3. A double-station horizontal and vertical rolling mill gearbox according to claim 2, characterized in that: An idler wheel is sleeved on the circumferential side surface of the idler wheel shaft. The idler wheel is fixed on the idler wheel shaft through a first flat key, and the idler wheel is meshedly connected to the third gear.

4. A double-station horizontal and vertical rolling mill gearbox according to claim 3, characterized in that: A fourth gear and a fifth gear are sleeved on the circumferential side surface of the first output shaft, a sixth gear is sleeved on the circumferential side surface of the second output shaft, and the fifth gear is meshedly connected to the sixth gear.

5. A double-station horizontal and vertical rolling mill gearbox according to any one of claims 1 to 4, characterized in that: A first oil slinger is also installed on the first input shaft, and the first oil slinger is used to sling lubricating oil toward the first end cover.

6. A double-station horizontal and vertical rolling mill gearbox according to claim 5, characterized in that: The first input shaft and the second input shaft are both connected to the housing via cylindrical bearings and four-point angular contact bearings.

7. The double-station horizontal and vertical rolling mill gearbox according to claim 1, characterized in that: The first output shaft and the second output shaft are both hollow structures, and connecting shafts are inserted into the first output shaft and the second output shaft, and the first ends of the connecting shafts are connected to the rolling rollers.

8. The double-station horizontal and vertical rolling mill gearbox according to claim 7, characterized in that: The second end of the connecting shaft is sleeve-connected to the first half coupling, and the first half coupling is connected to the second half coupling via a second flat key.

9. A double-station horizontal and vertical rolling mill gearbox according to claim 8, characterized in that: An outer circumferential side surface of the connecting shaft is provided with an external spline, and an inner circumferential side surface of the first half coupling is provided with an internal spline, and the external spline is connected to the internal spline by a clamping connection.

10. A double-station horizontal and vertical rolling mill gearbox according to claim 9, characterized in that: An output spline sleeve is sleeved on the outer peripheral side surface of one end of the first half coupling, and the output spline sleeve is connected to the outer peripheral side surface of the first output shaft.

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