CN213235954U

CN213235954U - Rotary supporting device

Info

Publication number: CN213235954U
Application number: CN202021952725.8U
Authority: CN
Inventors: 崔秀芹; 李超; 周卫
Original assignee: Xinxiang Hengde Electromechanical Co ltd
Current assignee: Xinxiang Hengde Electromechanical Co ltd
Priority date: 2020-09-09
Filing date: 2020-09-09
Publication date: 2021-05-18
Anticipated expiration: 2030-09-09

Abstract

The utility model discloses a rotary supporting device, wherein a bearing is horizontally arranged on the upper part of a gear ring, a mounting platform is fixed on the bearing, a speed reducing motor is arranged at the edge of the upper plane of the mounting platform, a driving gear is arranged on the lower part of the speed reducing motor after a motor shaft vertically passes through the mounting platform, and the driving gear is meshed with the gear ring for transmission; the tooth tops of the meshing teeth on the gear ring and the driving gear and the tooth roots among the meshing teeth are arcs with the same radius, and the tooth top arcs and the tooth root arcs are in tangent transition at the connecting positions. The technical scheme can realize the rotation function. The meshing teeth adopt non-standard arc-shaped teeth, so that the rotation is more stable, the fault tolerance rate is high under the condition of error, the machining difficulty of the meshing teeth in the device can be reduced, and the machining can be finished by using common general equipment.

Description

Rotary supporting device

Technical Field

The utility model belongs to rotary mechanism field especially relates to a gyration strutting arrangement.

Background

The slewing mechanism is often used in engineering vehicles, military vehicles, hoisting machinery and other equipment, and is a mechanism for realizing slewing motion of a supporting slewing part around a slewing center line thereof. The device mainly comprises a driving device, a transmission device and a slewing bearing device. The existing slewing mechanisms have the problems of unstable rotation, low fault-tolerant rate and difficult gear and tooth processing, so that a novel slewing supporting device is urgently needed.

Disclosure of Invention

The utility model aims to provide a simple structure, processing convenience, fault-tolerant rate height, rotation stability's gyration strutting arrangement.

The utility model has the task that the bearing is horizontally arranged at the upper part of the gear ring, the mounting platform is fixed on the bearing, the edge of the plane on the mounting platform is provided with the speed reducing motor, the lower part of the motor shaft of the speed reducing motor is provided with the driving gear after vertically passing through the mounting platform, and the driving gear is meshed with the gear ring for transmission; the tooth top of each meshing tooth on ring gear, the drive gear and the root of tooth between each meshing tooth are the circular arc that the radius is the same, and this addendum portion circular arc and the root of tooth circular arc are tangent transition in the junction, the addendum centre of a circle radius at the centre of a circle place of each addendum portion circular arc is greater than the radius of pitch circle, the root centre of a circle radius at the centre of a circle place of each root of tooth circular arc is less than the radius of pitch circle. The difference between the tooth top circle center circle and the pitch circle radius is equal to the difference between the pitch circle and the tooth root circle center circle radius. The bottom of the speed reducing motor is fixedly connected with a connecting plate, and the connecting plate is fixed on the mounting platform. And fixing holes are uniformly distributed at the lower edge of the gear ring.

The utility model discloses has following effect: the technical scheme is driven by a speed reducing motor, the driving gear and the gear ring are in gear transmission in an internal meshing mode, and the rotation function is realized under the action of the bearing. The meshing teeth adopt non-standard arc-shaped teeth, so that the driving gear and the gear ring are more stable in meshing, the fault tolerance rate is high under the condition of error, the processing difficulty of the meshing teeth in the device can be reduced, and the meshing teeth can be processed and finished by using common general equipment.

Drawings

FIG. 1 is a schematic structural view of the present invention; fig. 2 is a perspective view of the utility model; FIG. 3 is a cross-sectional view of FIG. 1 taken along a diameter; fig. 4 is a schematic view of a meshing portion of the ring gear and the drive gear.

Description of the drawings: 1. mounting a platform; 2. a connecting plate; 3. a reduction motor; 4. a ring gear; 5. a bearing; 6. a drive gear; 7. meshing teeth; 8. the center circle of the tooth crest; 9. a pitch circle; 10. the center of the tooth root is round.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 1-4, a rotary supporting device, a bearing 5 is horizontally installed on the upper part of a gear ring 4, a mounting platform 1 is fixed on the bearing 5, a speed reducing motor 3 is installed on the edge of the upper plane of the mounting platform 1, a motor shaft of the speed reducing motor 3 vertically penetrates through the mounting platform 1, then a driving gear 6 is installed on the lower part of the speed reducing motor, and the driving gear 6 is in meshing transmission with the gear ring 4; the tooth tops of the meshing teeth 7 on the gear ring 4 and the driving gear 6 and the tooth roots between the meshing teeth 7 are arcs with the same radius, and the tooth top arcs and the tooth root arcs are in tangent transition at the connecting positions. The radius of a tooth top circle center circle 8 where the circle center of each tooth top arc is located is larger than the radius of a pitch circle 9, and the radius of a tooth root circle center circle 10 where the circle center of each tooth root arc is located is smaller than the radius of the pitch circle 9. Preferably, the difference between the radii of the addendum circle center 8 and the pitch circle 9 is equal to the difference between the radii of the pitch circle 9 and the dedendum circle center 10. The arc-shaped meshing teeth 7 can enable meshing transmission between the gear ring 4 and the driving gear 6 to be more stable, and the fault tolerance rate is high under the condition of errors. And original gear engagement tooth needs to use the special gear shaping machine to process, and circular-arc engaging tooth 7 in this technical scheme only needs general equipment, for example milling machine to process can.

The bottom of the gear motor 3 is fixedly connected with a connecting plate 2, and the connecting plate 2 is fixed on the mounting platform 1. Fixing holes 11 are uniformly distributed at the lower edge of the gear ring 4, and the gear ring 4 can be fixed on a carrier or a working platform through screws.

The working principle of the device is as follows: the gear motor 3 works to enable the driving gear 6 to be in meshing transmission along the gear ring 4, and the mounting platform 1 can realize a rotating function due to the action of the bearing 5.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected, and may communicate between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Claims

1. A rotary supporting device is characterized in that a bearing (5) is horizontally arranged at the upper part of a gear ring (4), a mounting platform (1) is fixed on the bearing (5), a speed reducing motor (3) is arranged at the edge of the upper plane of the mounting platform (1), a driving gear (6) is arranged at the lower part of the speed reducing motor (3) after a motor shaft vertically penetrates through the mounting platform (1), and the driving gear (6) is in meshing transmission with the gear ring (4); tooth root portions between tooth top portions of the meshing teeth (7) on the gear ring (4) and the driving gear (6) and the meshing teeth (7) are arcs with the same radius, the tooth top portion arc and the tooth root portion arc are in tangent transition at a joint, the radius of a tooth top circle center circle (8) at which the circle center of each tooth top portion arc is located is larger than the radius of a pitch circle (9), and the radius of a tooth root circle center circle (10) at which the circle center of each tooth root portion arc is located is smaller than the radius of the pitch circle (9).

2. A slewing bearing device according to claim 1, characterized in that the difference between the radii of the addendum circle centre (8) and the pitch circle (9) is equal to the difference between the radii of the pitch circle (9) and the dedendum circle centre (10).

3. A slewing bearing device according to claim 1, characterised in that the gear motor (3) is fitted at its bottom with a coupling plate (2), said coupling plate (2) being fixed to the mounting platform (1).

4. A slewing bearing device according to claim 1, characterised in that the lower edges of the toothed rings (4) are provided with fixing holes (11) uniformly.