Speed reducer for hot rolling coiler

Abstract

The utility model relates to a speed reducer for a hot rolling coiler in the technical field of hot rolling coilers. The input shaft system is provided with an input shaft and a driving gear fixedly connected to the input shaft; the intermediate shaft system is provided with an intermediate shaft, a first-stage driven gear fixedly connected to the intermediate shaft, a first gear shifting gear, a second gear shifting gear and an inner spline sleeve, the first gear shifting gear and the second gear shifting gear are rotatably arranged on the intermediate shaft, and the inner spline sleeve is matched with the spline gear of the intermediate shaft to achieve synchronous rotation; the output shaft system is provided with an output shaft and a secondary driven gear fixedly connected to the output shaft; the internal spline sleeve is driven by the gear shifting device to move axially, meshing switching between the internal spline sleeve and different gear shifting gears is achieved, and therefore the power transmission path and the transmission ratio are changed, the same speed reducer can adapt to production of steel plates with different thicknesses, equipment replacement or shutdown adjustment is not needed, and production line efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to hot rolling coiler technical field especially relates to a speed reducer for hot rolling coiler. BACKGROUND

[0002] Hot rolling coiler is the key equipment in the steel hot rolling production line, and is mainly used for winding the high-temperature rolled metal plate (such as strip steel, steel plate and the like) into a compact steel coil, so as to be transported, stored or cold-rolled subsequently.

[0003] At present, the hot rolling coiler used by enterprises is single-stage transmission, which is more suitable for winding thin plate, but once the medium-thick plate is wound, the reducer bearing capacity is not enough, and the box body shakes, but the enterprise needs to wind different thickness steel plates on the same production line. If a large-size single-stage coiler reducer on the market is used to wind medium-thick plate and thin plate, the overall speed ratio will be reduced, and the efficiency of winding thin plate will be reduced.

[0004] Therefore, we redesign a speed reducer for hot rolling coiler on this basis, which can efficiently wind thin plate and meet the demand of winding medium-thick plate on the same coiler. CONTENT OF THE UTILITY MODEL

[0005] In order to overcome the deficiencies in the background art, the utility model discloses a speed reducer for hot rolling coiler.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] A speed reducer for hot rolling coiler comprises:

[0008] A housing;

[0009] An input shaft system having an input shaft and a driving gear fixedly connected to the input shaft;

[0010] A middle shaft system having a middle shaft, a first-stage driven gear fixedly connected to the middle shaft, a first shift gear and a second shift gear rotatably arranged on the middle shaft, and an inner spline sleeve, the inner spline sleeve is matched with the spline gear of the middle shaft to realize synchronous rotation;

[0011] An output shaft system having an output shaft and a second-stage driven gear fixedly connected to the output shaft;

[0012] A shift device having a driving shaft arranged perpendicularly to the middle shaft, two shift forks spaced apart on the driving shaft, the shift forks are connected with the inner spline sleeve through a linkage mechanism, the inner spline sleeve is axially moved by the rotation of the driving shaft to switch the matching state of the inner spline sleeve and the first shift gear or the second shift gear, so as to change the power transmission path and the transmission ratio.

[0013] Further, the gear shifting device further comprises a positioning structure, the positioning structure comprises two insertion holes arranged on the side wall of the shell and a handle stud connected with the driving shaft, and the driving shaft is locked or released by rotating the handle stud to fix the matching position of the inner spline sleeve.

[0014] Further, the gear shifting device further comprises a driving structure, the driving structure comprises a telescopic device and a driving handle, the telescopic device is rotationally connected to the side of the shell at the fixed end, the telescopic end is rotationally connected with one end of the driving handle through the handle stud, and the other end of the driving handle is fixedly connected with the outer end of the driving shaft.

[0015] Further, the linkage mechanism comprises a radial connection shaft, one end of the connection shaft is movably embedded in the ring groove of the inner spline sleeve, and the other end of the connection shaft is matched with the U-shaped end of the shift fork and is fixed through the gear part to prevent disengagement.

[0016] Further, the driving gear of the input shaft system has two, and is meshed with the first gear shifting gear and the second gear shifting gear respectively, and the second driven gear of the output shaft system is meshed with the first driven gear of the intermediate shaft system.

[0017] Further, the driving gear of the input shaft system is meshed with the first driven gear, and the second driven gear of the output shaft system has two, and is meshed with the first gear shifting gear and the second gear shifting gear of the intermediate shaft system respectively.

[0018] Further, the first gear shifting gear and the second gear shifting gear are located on both sides of the spline gear respectively, and the first gear shifting gear and the second gear shifting gear are provided with spline teeth capable of being matched with the inner spline sleeve on one side of the spline gear.

[0019] Further, the width of the spline tooth part is 1 / 3-1 / 2 of the width of the inner spline sleeve.

[0020] Further, the shell comprises a lower shell, a middle shell and an upper shell connected in sequence from bottom to top, the input shaft system is correspondingly located between the middle shell and the upper shell, and the intermediate shaft system and the output shaft system are correspondingly located between the middle shell and the lower shell.

[0021] Compared with the prior art, the utility model has the advantages that:

[0022] 1. The inner spline sleeve is driven by the gear shifting device to move axially, the meshing switching with different gear shifting gears is realized, and the power transmission path and the transmission ratio are changed. Not only the transmission ratio is large, the winding speed is improved, and the high efficient winding demand of the thin plate is adapted, but also the transmission ratio is reduced, the output torque is significantly increased, the high bearing capacity requirement in the plate winding is met, the same speed reducer can be adapted to the production of different thickness steel plates, the equipment does not need to be replaced or stopped for adjustment, and the production line efficiency is greatly improved.

[0023] 2. The shell is designed in layers (lower shell, middle shell, upper shell), and each shaft system is independently arranged in different shell layers, which is convenient for assembly and maintenance;

[0024] 3. The linkage mechanism is fixed through the connection of the shaft and the ring groove, and the gear position is fixed to ensure the accuracy and stability of the gear shifting action. The positioning structure of the plug-in hole and the handle stud is set to ensure the engagement position of the inner spline sleeve and the target gear shifting gear after the drive shaft is locked, avoiding the risk of shifting or deviation during operation. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the front view of the utility model;

[0026] Figure 2 It is the left view of the utility model;

[0027] Figure 3 It is Figure 1 A-A sectional view in the figure;

[0028] Figure 4 It is Figure 1 B-B sectional view in the figure;

[0029] Figure 5 It is the driving structure schematic view of the driving handle in the utility model;

[0030] Figure 6 It is the assembly schematic view of the driving shaft, the shift fork and the linkage mechanism in the utility model;

[0031] Figure 7 It is Figure 6 I local enlarged view in the figure;

[0032] Figure 8 It is Figure 6 II local enlarged view in the figure.

[0033] In the figure: 1, shell; 11, lower shell; 12, middle shell; 13, upper shell; 101, plug-in hole; 2, input shaft system; 21, input shaft; 22, driving gear; 3, intermediate shaft system; 31, intermediate shaft; 32, first driven gear; 33, first gear shifting gear; 34, second gear shifting gear; 35, inner spline sleeve; 351, ring groove; 36, spline gear; 37, spline tooth part; 4, output shaft system; 41, output shaft; 42, second driven gear; 5, gear shifting device; 51, driving shaft; 52, shift fork; 53, handle stud; 54, telescopic device; 55, driving handle; 6, linkage mechanism; 61, connecting shaft; 62, gear position. DETAILED DESCRIPTION

[0034] The utility model can be explained in detail through the following examples, the purpose of the utility model is disclosed to protect all technical improvements within the scope of the utility model, in the description of the utility model, it is understood that, if there are terms "upper", "lower", "front", "rear", "left", "right" and so on indicate the orientation or position relation, only with the drawing of the application, for the convenience of describing the utility model, it is understood that, if there are terms "end", "side", "end part", "side part", "transverse", "longitudinal" and so on indicate the orientation or position relation, only the length and width of the corresponding component, namely "end part" indicates the head and tail area of the length direction of the corresponding component, "side part" indicates the head and tail area of the width direction of the corresponding component, for the convenience of describing the utility model, not indicating or suggesting that the device or element must have a particular orientation.

[0035] Embodiment one, combine with the attached Figures 1-8 A speed reducer for hot rolling coiler, comprising:

[0036] The shell 1 adopts a layered structure, comprising a lower shell 11, a middle shell 12 and an upper shell 13 connected by bolts from bottom to top. The input shaft system 2 is located between the middle shell 12 and the upper shell 13, the intermediate shaft system 3 and the output shaft system 4 are located between the middle shell 12 and the lower shell 11. The side wall of the shell 1 is provided with two symmetrical plug-in holes 101 for positioning the shifting device 5.

[0037] According to the needs, the top of the shell 1 is provided with a ventilation cover and a sight hole cover, for example, a ventilation cover with a model of D-G11 / 2.

[0038] The input shaft system 2 comprises an input shaft 21 and two driving gears 22. The input shaft 21 is fixed between the upper shell 13 and the shell 1 through a bearing seat, and the two driving gears 22 are fixed on the input shaft 21 through a key connection and are engaged with the first shifting gear 33 and the second shifting gear 34 of the intermediate shaft system 3 respectively.

[0039] The intermediate shaft system 3 comprises an intermediate shaft 31, a first driven gear 32, a first shifting gear 33, a second shifting gear 34, an inner spline sleeve 35 and a spline gear 36. The intermediate shaft 31 is installed between the middle shell 12 and the lower shell 11 through a bearing, the first driven gear 32 is fixed on the intermediate shaft 31 through a key connection and is engaged with the second driven gear 42 of the output shaft system 4. The first shifting gear 33 and the second shifting gear 34 are rotatably arranged on the intermediate shaft 31 through a bearing, and the side of each of them facing the spline gear 36 is provided with a spline tooth part 37, and the width of the spline tooth part 37 is 1 / 3~1 / 2 of the width of the inner spline sleeve 35. The spline gear 36 is fixedly connected with the intermediate shaft 31 through a spline, and the inner spline sleeve 35 is sleeved on the spline gear 36 and can slide in the axial direction.

[0040] Specifically, the first shift gear 33 and the second shift gear 34 are respectively located on both sides of the spline gear 36.

[0041] Further, when the shift gear and the spline tooth portion 37 are two independent components assembled together, the spline tooth portion 37 has a width of 1 / 2 of the width of the inner spline sleeve 35. In the working state, the half-width region of the inner spline sleeve 35 is matched with the spline tooth portion 37, and the other half-width region is matched with the spline gear 36. When the shift gear and the spline tooth portion 37 are the same component, the spline tooth portion 37 has a relief groove spacing with the shift gear. In order to ensure that the width of the inner spline sleeve 35 matched with the spline gear 36 occupies half of the width of the inner spline sleeve 35 as much as possible in the working state, the width of the spline tooth portion 37 and the relief groove spacing are about half of the width of the inner spline sleeve 35. The specific design is based on the relief groove spacing, which is not limited here.

[0042] The output shaft system 4 includes an output shaft 41 and a secondary driven gear 42. The output shaft 41 is installed between the middle housing 12 and the lower housing 11 through a bearing, and the secondary driven gear 42 is fixed to the end of the output shaft 41 and engaged with the primary driven gear 32 of the intermediate shaft system 3.

[0043] The shift device 5 includes a driving shaft 51, a shift fork 52, a handle stud 53, an extension device 54, and a linkage mechanism 6. The driving shaft 51 is perpendicular to the intermediate shaft 31 and is fixed to the inside of the housing 1 through a bearing seat at one end and extends out of the lower housing 11 in a sealed rotating manner at the other end. Two shift forks 52 are fixed on the driving shaft 51 at intervals, and the U-shaped end of the shift fork 52 is connected to the inner spline sleeve 35 through the linkage mechanism 6.

[0044] The extension end of the driving shaft 51 is provided with a driving handle 55 perpendicular thereto, and the outer end of the driving handle 55 is threadedly matched with the handle stud 53. The optical axis segment of the handle stud 53 rotates through the extension end of the extension device 54, and the fixed end of the extension device 54 is rotationally connected to the housing 1. Further, the housing 1 is rotationally connected to the fixed end of the extension device 54 through a rotating seat. That is, the extension device 54 drives the driving handle 55 to flip, and then drives the driving shaft 51 to rotate.

[0045] According to the needs, in order to reduce the manufacturing cost, the shift device 5 can not be provided with the extension device 54. At this time, when shifting, the driving handle 55 can be manually held and pulled to rotate, and then the handle stud 53 is rotated and inserted into the corresponding insertion hole 101 to complete the positioning operation.

[0046] Further, when the shift is completed, the cooperation position of the inner spline sleeve can be fixed by the cooperation of the handle stud 53 and the corresponding plug-in hole 101. Specifically, when the shift is completed, the handle stud 53 is rotated, and under the action of the thread, the handle stud 53 moves axially, so that the end of the handle stud 53 is plugged into the corresponding plug-in hole 101, realizing the positioning operation of the shift device 5. Or, when the inner spline sleeve 35 is engaged with the spline tooth part 37 of the first shift gear 33, or when it is engaged with the spline tooth part 37 of the second shift gear 34, the end of the handle stud 53 can be plugged into the corresponding plug-in hole 101.

[0047] It should be noted that the handle stud 53 can be understood as the outer end of the stud having a rotating handle.

[0048] The linkage mechanism 6 includes a connecting shaft 61 and a gear part 62, one end of the connecting shaft 61 is embedded in the ring groove 351 of the inner spline sleeve 35, and the other end is hinged with the U-shaped end of the fork 52, and the gear part 62 is fixed on the end of the connecting shaft 61 by screwing, preventing it from coming off. Specifically, the linkage mechanism 6 has two, which are symmetrically located on the left and right sides of the inner spline sleeve 35.

[0049] According to the need, the end of the connecting shaft 61 embedded in the ring groove 351 of the inner spline sleeve 35 is fixedly sleeved with a bearing, so that the connecting shaft 61 can not only rotate along its central axis, but also turn along the ring groove 351.

[0050] Further, the gear part 62 has two, which are respectively located on both sides of the U-shaped end of the fork 52, and the gear part 62 can be a nut screwed on the shaft body of the connecting shaft 61. The gear part 62 located on the inner side of the U-shaped end of the fork 52 can also be a sleeve, which is limited by the U-shaped end of the fork 52 and the bearing.

[0051] Shift operation process:

[0052] Initial state: The inner spline sleeve 35 is completely sleeved on the outside of the spline gear 36, in the middle position, and is not engaged with the shift gear.

[0053] Switch to sheet mode: as shown in Figures 3-4 , operate the telescopic device 54, the telescopic end pushes the driving handle 55 to rotate around the driving shaft 51 to make the driving shaft 51 rotate, driving the fork 52 to move. The linkage mechanism 6 forces the inner spline sleeve 35 to slide upwards, so that it is engaged with the spline tooth part 37 of the first shift gear 33. At this time, the power path is: input shaft 21→main gear 22→first shift gear 33→inner spline sleeve 35→intermediate shaft 31→first driven gear 32→second driven gear 42→output shaft 41, which is suitable for winding thin plates.

[0054] Switch to the mode of medium plate: reverse operation telescopic device 54, drive handle 55 with the shift fork 52 down, the inner spline sleeve 35 and the spline tooth part 37 of the second shift gear 34 mesh. The power path changes: input shaft 21 → driving gear 22 → second shift gear 34 → inner spline sleeve 35 → intermediate shaft 31 → primary driven gear 32 → secondary driven gear 42 → output shaft 41, the output torque increases, adapts to medium plate coiling.

[0055] Positioning structure: after the shift is completed, the rotating handle stud 53 is inserted into the corresponding shell 1 side wall of the plug hole 101, the position of the drive shaft 51 is locked, and the stable meshing of the inner spline sleeve 35 is ensured.

[0056] It should be noted that the transmission ratio of the first shift gear and the corresponding driving gear and the transmission ratio of the second shift gear and the corresponding driving gear are not the same.

[0057] Embodiment two, the difference between this embodiment and embodiment one is that the gear meshing mode: the driving gear 22 of the input shaft system 2 is only provided with one, and is directly meshed with the primary driven gear 32 of the intermediate shaft system 3; and the secondary driven gear 42 of the output shaft system 4 is provided with two, which are respectively meshed with the first shift gear 33 and the second shift gear 34. When shifting, the inner spline sleeve 35 switches different shift gears, changes the rotation speed and torque of the output shaft 41.

[0058] The part not described in the utility model is prior art, for those skilled in the art, obviously, the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model; therefore, from any point of view, the above embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model, any reference signs in the claims should not be regarded as limiting the content of the claims involved.

Claims

1. A reducer for a hot-rolled coiler, characterized in that, include: Shell (1); Input shaft system (2), which has an input shaft (21) and a drive gear (22) fixedly connected to the input shaft (21); The intermediate shaft system (3) has an intermediate shaft (31), a first-stage driven gear (32) fixedly connected to the intermediate shaft (31), a first shift gear (33) and a second shift gear (34) rotatably disposed on the intermediate shaft (31), and an inner spline sleeve (35), wherein the inner spline sleeve (35) cooperates with the spline gear (36) of the intermediate shaft (31) to achieve synchronous rotation; The output shaft system (4) has an output shaft (41) and a secondary driven gear (42) fixedly connected to the output shaft (41). The shifting device (5) has a drive shaft (51) perpendicular to the intermediate shaft (31) and two shift forks (52) spaced apart on the drive shaft (51). The shift forks (52) are connected to the inner spline sleeve (35) through the linkage mechanism (6). The rotation of the drive shaft (51) drives the inner spline sleeve (35) to move axially, so as to switch the engagement state of the inner spline sleeve (35) with the first shift gear (33) or the second shift gear (34), thereby changing the power transmission path and transmission ratio.

2. The reducer for a hot-rolled coiler according to claim 1, characterized in that: The shifting device (5) also includes a positioning structure, which includes two insertion holes (101) on the side wall of the housing (1) and a stud with a shank (53) connected to the drive shaft (51). The drive shaft (51) is locked or released by rotating the stud with a shank (53) to fix the mating position of the inner spline sleeve (35).

3. The reducer for a hot-rolled coiler according to claim 2, characterized in that: The shifting device (5) also includes a drive structure, which includes a telescopic device (54) and a drive handle (55). The fixed end of the telescopic device (54) is rotatably connected to the side of the housing (1), and the telescopic end is rotatably connected to one end of the drive handle (55) through a stud with a handle (53). The other end of the drive handle (55) is fixedly connected to the outer end of the drive shaft (51).

4. A reducer for a hot-rolled coiler according to claim 1, characterized in that: The linkage mechanism (6) includes a radially arranged connecting shaft (61), one end of which is movably embedded in the annular groove (351) of the inner spline sleeve (35) and the other end is engaged with the U-shaped end of the shift fork (52) and fixed by the stop piece (62) to prevent it from disengaging.

5. A reducer for a hot-rolled coiler according to claim 1, characterized in that: The input shaft system (2) has two driving gears (22), which mesh with the first shift gear (33) and the second shift gear (34) respectively. The secondary driven gear (42) of the output shaft system (4) meshes with the primary driven gear (32) of the intermediate shaft system (3).

6. A reducer for a hot-rolled coiler according to claim 1, characterized in that: The input shaft system (2) has a driving gear (22) that meshes with a first-stage driven gear (32). The output shaft system (4) has two second-stage driven gears (42), which mesh with the first shift gear (33) and the second shift gear (34) of the intermediate shaft system (3), respectively.

7. A reducer for a hot-rolled coiler according to claim 1, characterized in that: The first shift gear (33) and the second shift gear (34) are located on both sides of the spline gear (36). The first shift gear (33) and the second shift gear (34) are provided with spline teeth (37) on the side of the spline gear (36) that can cooperate with the inner spline sleeve (35).

8. A reducer for a hot-rolled coiler according to claim 7, characterized in that: The width of the spline teeth (37) is 1 / 3 to 1 / 2 of the width of the inner spline sleeve (35).

9. A reducer for a hot-rolled coiler according to claim 1, characterized in that: The housing (1) includes a lower housing (11), a middle housing (12) and an upper housing (13) connected from bottom to top. The input shaft system (2) is located between the middle housing (12) and the upper housing (13), and the intermediate shaft system (3) and the output shaft system (4) are located between the middle housing (12) and the lower housing (11).

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