阅读说明：本技术 拉矫机用多功能减速机 (Multifunctional speed reducer for withdrawal straightening machine ) 是由 张玉圣 于 2020-12-17 设计创作，主要内容包括：本发明涉及减速机领域,提供了拉矫机用多功能减速机。通过设置锥齿轮输入箱和三级行星齿轮箱输入的方式实现两种速比的输入,根据实际的使用需求,选择任意一种输入,满足拉矫机的大扭矩、大速比的需求。通过将普通传动和行星传动结合的方式,提高输出扭矩,较小箱体的体积。(The invention relates to the field of speed reducers, and provides a multifunctional speed reducer for a straightening and withdrawal machine. The input of two speed ratios is realized by setting the input mode of the bevel gear input box and the three-stage planetary gear box, and any one input is selected according to the actual use requirement, so that the requirements of large torque and large speed ratio of the tension leveler are met. The output torque is improved and the size of the box body is smaller by combining the common transmission with the planetary transmission.)

1. The multifunctional speed reducer for the straightening and withdrawal machine comprises a box body, a first intermediate shaft, a second intermediate shaft, a third intermediate shaft and an output shaft, wherein the box body consists of an upper box body and a lower box body, the first intermediate shaft and the third intermediate shaft are respectively vertically supported between the upper box body and the lower box body through bearings, the second intermediate shaft and the second intermediate shaft are vertically supported in the box body through the bearings, the output shaft is vertically supported at the bottom of the lower box body through a bearing seat, the third intermediate shaft is coaxial with the output shaft, and the first intermediate shaft and the second intermediate shaft are distributed on two sides of the third output shaft; the first intermediate shaft and the second intermediate shaft are gear shafts respectively, and an input large gear and a sun gear are fixedly mounted on the third intermediate shaft; an output gearwheel is rotatably supported on the output shaft by a bearing; a planet carrier is arranged between the third intermediate shaft and the output shaft, the planet carrier is fixedly connected with the upper end surface of the output shaft, and the lower end surface of the planet carrier is fixedly connected with the upper end surface of the output large gear through screws; a planet wheel is arranged in the planet carrier, and the planet wheel is simultaneously in meshing transmission with the sun wheel and the inner gear ring of the planet carrier; the first middle part is in meshing transmission with the input gearwheel; and the second intermediate shaft is in meshing transmission with the output large gear.

2. The multifunctional speed reducer for the straightening machine according to claim 1, wherein a first input shaft is supported by a bearing in the first input box, and the first input shaft and the extending end of the first intermediate shaft are connected and driven by a bevel gear pair.

3. The multifunctional speed reducer for the withdrawal and straightening unit according to claim 1, wherein a second input shaft and a three-stage planetary transmission mechanism are installed in the second input box, the second input shaft drives the three-stage planetary transmission mechanism, and an output end of the three-stage planetary transmission mechanism is connected with a shaft end of the second intermediate shaft through a spline.

4. The multifunctional speed reducer for the withdrawal and straightening unit according to claim 1, wherein a ball top is installed between the planet carrier and the lower end surface of the third intermediate shaft.

5. The multi-function reducer of claim 1, wherein the third intermediate shaft is supported by bearings on top surfaces of the upper and lower housings, the third intermediate shaft extends into the lower housing, and the sun gear is mounted to a bottom end of the third intermediate shaft.

Technical Field

The invention relates to the field of speed reducers, in particular to a multifunctional speed reducer for a straightening and withdrawal machine.

Background

The withdrawal and straightening machine is important equipment in a production line of a steel mill and is used for withdrawal, straightening and straightening of a casting blank. The traditional cylindrical gear transmission mechanism cannot meet the requirements of large speed ratio and large torque of the traditional cylindrical gear transmission mechanism. In the prior art, the bevel gear set is adopted for input, so that the speed ratio requirement can be met, but the output torque is relatively small, and the higher and higher continuous casting requirements cannot be met.

Disclosure of Invention

In order to overcome the requirement that the large-speed-ratio and large-torque output of the withdrawal and straightening machine in the prior art simultaneously has multi-speed-ratio output, the invention aims to provide a multifunctional speed reducer for the withdrawal and straightening machine.

In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:

the multifunctional speed reducer for the straightening and withdrawal machine comprises a box body, a first intermediate shaft, a second intermediate shaft, a third intermediate shaft and an output shaft, wherein the box body consists of an upper box body and a lower box body, the first intermediate shaft and the third intermediate shaft are respectively vertically supported between the upper box body and the lower box body through bearings, the second intermediate shaft and the second intermediate shaft are vertically supported in the box body through the bearings, the output shaft is vertically supported at the bottom of the lower box body through a bearing seat, the third intermediate shaft is coaxial with the output shaft, the first intermediate shaft and the second intermediate shaft are distributed on two sides of the third output shaft, a first input box body and a second input box body are mounted at the top of the upper box body, the output end of the first input box body is in transmission with the first intermediate shaft, and the output end of the second input box; the first intermediate shaft and the second intermediate shaft are gear shafts respectively, and an input large gear and a sun gear are fixedly mounted on the third intermediate shaft; an output gearwheel is rotatably supported on the output shaft by a bearing; a planet carrier is arranged between the third intermediate shaft and the output shaft, the planet carrier is fixedly connected with the upper end surface of the output shaft, and the lower end surface of the planet carrier is fixedly connected with the upper end surface of the output large gear through screws; a planet wheel is arranged in the planet carrier, and the planet wheel is simultaneously in meshing transmission with the sun wheel and the inner gear ring of the planet carrier; the first middle part is in meshing transmission with the input gearwheel; and the second intermediate shaft is in meshing transmission with the output large gear.

Furthermore, a first input shaft is supported in the first input box body through a bearing, and the first input shaft and the extending end of the first intermediate shaft are connected and driven through a bevel gear pair.

Furthermore, a second input shaft and a third-stage planetary transmission mechanism are installed in the second input box, the second input shaft drives the third-stage planetary transmission mechanism, and the output end of the third-stage planetary transmission mechanism is connected with the shaft end of the second intermediate shaft through a spline.

Furthermore, a ball top is arranged between the planet carrier and the lower end face of the third intermediate shaft.

Still further, the third intermediate shaft is supported on the top surfaces of the upper box body and the lower box body through bearings, the third intermediate shaft extends into the lower box body, and the sun gear is mounted at the bottom end of the third intermediate shaft.

After the technical scheme is adopted, the invention has the beneficial effects that: the input of two speed ratios is realized by setting the input mode of the bevel gear input box and the three-stage planetary gear box, and any one input is selected according to the actual use requirement, so that the requirements of large torque and large speed ratio of the tension leveler are met. The output torque is improved and the size of the box body is smaller by combining the common transmission with the planetary transmission.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Detailed Description

The following detailed description of embodiments of the invention is provided in conjunction with the accompanying drawings:

as shown in the figure, the multifunctional speed reducer for the straightening and withdrawal machine comprises a box body, a first input box body 1, a second input box body 2, a first intermediate shaft 3, a second intermediate shaft 4, a third intermediate shaft 5, a planet carrier 6, a planet wheel 7 and an output shaft 8. Each shaft is vertically arranged.

The box body is composed of an upper box body 9 and a lower box body 10, and the upper box body 9 and the lower box body 10 are fixedly connected through bolts. The third intermediate shaft 5 is coaxially arranged with the output shaft 8, the third intermediate shaft 5 is supported on the upper wall of the upper box 9 and the box body of the lower box 10 by a bearing, and the lower end of the third intermediate shaft 5 extends into the lower box body 10. The end part of the third intermediate shaft 5 extending into the lower box body 10 is provided with a sun gear 11. The middle of first jackshaft 3 and the second 4 distribute in the both sides of third jackshaft 5, and first jackshaft 3 is supported in the upper wall of last box 9 and the upper wall of lower box 10 by the bearing, and second jackshaft 4 is supported in the lower wall of last box 9 upper wall and lower box 10 by the bearing, and first jackshaft 3 and second jackshaft 4 are the gear shaft, and the outside of box 9 is all stretched out to its tip. The first intermediate shaft 3 is correspondingly connected with the first input box body 1, and the second intermediate shaft 4 is correspondingly connected with the second input box body 2. A horizontal first input shaft 12 is arranged in the first input box body, and the first input shaft 12 and the first middle shaft 3 are in meshing transmission through a pair of bevel gear pairs 13. A vertical second input shaft 14 and a three-stage planetary transmission mechanism 15 are installed in the second input box body 2, and a final-stage planet carrier of the three-stage planetary transmission mechanism 15 is in spline connection transmission with the end portion of the second intermediate shaft 4.

An input gearwheel 16 is fixedly arranged on the third intermediate shaft 5, and the first intermediate shaft 3 is in meshing transmission with the gearwheel 16; an output gearwheel 17 is rotatably supported on the output shaft 8 by a bearing, and the second intermediate shaft 4 is in meshing transmission with the output gearwheel 17. The third intermediate shaft 5 and the output shaft 8 are coaxially arranged, the third intermediate shaft 5 is positioned right above the output shaft 8, a planet carrier 6 is arranged between the third intermediate shaft 5 and the output shaft 8, the edge of the lower end face of the planet carrier 6 is fixedly connected with the upper end face of the output large gear 17 through screws, a ball top is arranged between the planet carrier 6 and the end face of the bottom of the third intermediate shaft 5, the planet carrier 6 is fixedly connected with the upper end face of the output shaft 8, or the planet carrier and the output shaft are integrated. The planet carrier 6 is internally provided with planet wheels, and the planet wheels 6 are in mesh transmission with the sun wheel 11 and the inner gear ring 18 of the planet carrier.

When the speed reducer works: when the second input shaft 14 is locked, the first input shaft 12 inputs: the first input shaft 12 drives the first intermediate shaft 3 through the bevel gear pair 13, the first intermediate shaft 3 is meshed with the input large gear 16 to drive the third intermediate shaft 5 to rotate, the sun gear 11 of the third intermediate shaft 5 drives the inner gear ring 18 of the planet carrier 6 through the planet gear 7, and the planet carrier 6 drives the output shaft 8 to output. When the first input shaft 12 is locked and the second input shaft 14 is input, the second input shaft 14 drives the second intermediate shaft 4 to rotate through the three-stage planetary transmission mechanism 15, the second intermediate shaft 4 is meshed with the output large gear 17, the output large gear 17 drives the planet carrier 6 to rotate, and the planet carrier 6 drives the output shaft 8 to output.