Ring rolling mill cone roller speed reducer output shaft structure capable of bearing additional axial force

Abstract

The utility model discloses an output shaft structure of a cone roller speed reducer of a ring rolling mill capable of bearing additional axial force, which is mainly characterized in that a thrust self-aligning bearing is additionally arranged in the cone roller speed reducer of the ring rolling mill to bear the axial force generated by a pull rod when the cone roller speed reducer works and displaces, so that a stress spigot of the pull rod and a positioning spigot of a spline housing are omitted. On the basis of solving the problem that the cone roller speed reducer is difficult to install and maintain, the structure of the cone roller mechanism and the structure of the pull rod are optimized, and stable operation of the cone roller speed reducer is also considered.

Description

Technical Field

[0001] The utility model relates to a ring rolling machine, in particular to an output shaft structure of a tapered roller reducer of the ring rolling machine which can withstand additional axial force. Background Art

[0002] In recent years, with China's vigorous support for renewable energy development, the wind power industry has reached a historic peak. Wind power development has gradually evolved from "many" in previous years to "large" today, with offshore wind power being particularly prominent. As the wind power industry thrives, the ring forging industry is also booming, and market demand for ring forgings is also increasing.

[0003] The ring rolling mill reducer is the power transmission device of the ring forging system. As the diameter of the ring forging increases, the design of the ring rolling mill also needs to be larger. Therefore, the design, installation, commissioning, maintenance and other aspects of the ring rolling mill reducer need to be optimized and improved. In particular, because the cone roller reducer works in an inclined manner, as the cone roller reducer becomes larger and larger, the connection method between the output shaft and the pull rod of the existing cone roller reducer leads to the cone roller reducer requiring a lot of time and effort for installation, maintenance and upkeep.

[0004] like Figure 1 As shown in the figure, the tapered roller reducer is installed at an inclination of 16 degrees. There will be a certain working displacement during the ring rolling process, and the displacement direction is shown in the figure.

[0005] The existing tapered roller reducer has the following problems during use: First, there are positioning joints between the pull rod and the output shaft, and there are also positioning joints between the spline sleeve and the output shaft. During the displacement process, additional axial force will be generated during the operation under the action of the pull rod. The joint problem makes it difficult to disassemble the tapered roller reducer; Second, there is a clearance fit between the positioning joint of the pull rod and the output shaft, and the output shaft is relatively long, which makes the installation and maintenance of the tapered roller reducer take a lot of time. Summary of the Invention

[0006] The purpose of this utility model is to design an output shaft structure of a tapered roller reducer of a ring rolling machine that can withstand additional axial force, optimize the output shaft structure of the tapered roller reducer, allow the tapered roller reducer to withstand the additional axial force of the pull rod, and reduce the installation, maintenance and maintenance costs of the reducer.

[0007] The technical solution of the utility model is: an output shaft structure of a cone roller reducer of a ring rolling machine that can withstand additional axial force, the output shaft structure includes: a pull rod, an output shaft of the cone roller reducer, a connecting bolt, a cylindrical roller bearing, a thrust self-aligning bearing, a self-aligning roller bearing, a counter-torque bracket, a force bracket, a box body, a box body back plate, a No. 1 bearing seat, a No. 2 bearing seat, and a box body cover plate; the No. 1 bearing seat is welded to the box body back plate, the No. 2 bearing seat is welded to the box body cover plate, the counter-torque bracket is installed on the box body cover plate, and the box body back plate is installed by connecting bolts. Install a load-bearing bracket, install a pull rod in the load-bearing bracket through the bearing seat, install a cylindrical roller bearing and a thrust spherical bearing on the No. 1 bearing seat, install a spherical roller bearing on the No. 2 bearing seat, and install the tapered roller reducer output shaft in the box through the cylindrical roller bearing, the thrust spherical bearing and the spherical roller bearing. One end of the tapered roller reducer output shaft is connected to the anti-torque bracket, and the other end of the tapered roller reducer output shaft is connected to the pull rod; the axial force generated by the pull rod is borne by the thrust spherical bearing under the action of the anti-torque bracket, and is finally transmitted to the load-bearing bracket through the back plate of the box.

[0008] The utility model has the following advantages:

[0009] 1. The spline sleeve in the output shaft structure is eliminated, making the output shaft structure simpler;

[0010] 2. The force-bearing stop of the tie rod is eliminated, and the tie rod can be disassembled separately, which facilitates the early installation and later maintenance, and reduces a lot of installation and maintenance time and costs;

[0011] 3. Add a thrust self-aligning bearing in the output shaft structure to bear the axial force generated by the pull rod during the working displacement of the cone roller reducer, so that the force of the cone roller reducer is more reasonable, which is conducive to the smooth operation of the cone roller reducer.

[0012] 4. During the operation of the tapered roller reducer, the large gear of the tapered roller reducer will also generate axial force, which is also borne by the thrust spherical bearing. The cylindrical roller bearings and spherical roller bearings only need to bear the radial force of the tapered roller reducer, and the operation of the tapered roller reducer will be more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the output shaft structure of the original tapered roller reducer;

[0014] Figure 2 This is a schematic diagram of the output shaft structure of the tapered roller reducer of the tapered roller shaft mechanism of the utility model;

[0015] In the figure: 1 pull rod, 2 tapered roller reducer output shaft, 3 connecting bolts, 4 cylindrical roller bearing, 5 thrust spherical bearing, 6 spherical roller bearing, 7 anti-torque bracket, 8 load bracket, 9 housing, 10 housing back plate, 11 No. 1 bearing seat, 12 No. 2 bearing seat, 13 housing cover. DETAILED DESCRIPTION

[0016] The technical solution of the present utility model is described in detail below with reference to the accompanying drawings.

[0017] like Figure 2 As shown, an output shaft structure of a cone roller reducer for a ring rolling machine that can withstand additional axial force, the output shaft structure includes: a pull rod 1, an output shaft of the cone roller reducer 2, a connecting bolt 3, a cylindrical roller bearing 4, a thrust self-aligning bearing 5, a self-aligning roller bearing 6, an anti-torque bracket 7, a force bracket 8, a box body 9, a box body back plate 10, a No. 1 bearing seat 11, a No. 2 bearing seat 12, and a box body cover 13; the No. 1 bearing seat 11 is welded to the box body back plate 10, the No. 2 bearing seat 12 is welded to the box body cover 13, the anti-torque bracket 7 is installed on the box body cover 13, and the force bracket 8 is installed on the box body back plate 10 through the connecting bolt 3. Force bracket 8, the pull rod 1 is installed in the force bracket 8 through the bearing seat, the cylindrical roller bearing 4 and the thrust spherical bearing 5 are installed on the No. 1 bearing seat 11, and the spherical roller bearing 6 is installed on the No. 2 bearing seat 12. The output shaft 2 of the tapered roller reducer is installed in the box body 9 through the cylindrical roller bearing 4, the thrust spherical bearing 5 and the spherical roller bearing 6. One end of the output shaft 2 of the tapered roller reducer is connected to the anti-torque bracket 7, and the other end of the output shaft 2 of the tapered roller reducer is connected to the pull rod 1; the axial force generated by the pull rod 1 is borne by the thrust spherical bearing 5 under the action of the anti-torque bracket 7, and is finally transmitted to the force bracket 8 through the back plate 10 of the box body.

Claims

1. The output shaft structure of the cone roller reducer of the ring rolling machine, which can withstand additional axial force, is characterized by The output shaft structure includes: a pull rod, a tapered roller reducer output shaft, connecting bolts, a cylindrical roller bearing, a thrust self-aligning bearing, a spherical roller bearing, an anti-torque bracket, a force bracket, a box body, a box body back plate, a No. 1 bearing seat, a No. 2 bearing seat, and a box body cover plate; the No. 1 bearing seat is welded to the box body back plate, the No. 2 bearing seat is welded to the box body cover plate, the anti-torque bracket is installed on the box body cover plate, the force bracket is installed on the box body back plate through the connecting bolts, the pull rod is installed in the force bracket through the bearing seat, the cylindrical roller bearing and the thrust self-aligning bearing are installed on the No. 1 bearing seat, and the spherical roller bearing is installed on the No. 2 bearing seat, the output shaft of the tapered roller reducer is installed in the box body through the cylindrical roller bearing, the thrust self-aligning bearing and the spherical roller bearing, one end of the output shaft of the tapered roller reducer is connected to the anti-torque bracket, and the other end of the output shaft of the tapered roller reducer is connected to the pull rod; the axial force generated by the pull rod is borne by the thrust self-aligning bearing under the action of the anti-torque bracket, and is finally transmitted to the force bracket through the box body back plate.

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