CN205643777U - Multicore optic fibre is umbrella gear system for sliding ring - Google Patents

Abstract

The utility model relates to a multi-core optical fiber slip ring, in particular to a bevel gear system for a multi-core optical fiber slip ring. Wei prism, the first center wheel and the second center wheel are respectively set on the two ends of the main shaft; the opposite ends of the first center wheel and the second center wheel are respectively provided with a bevel gear, and the outer ring surface of the main shaft There is also an epicyclic bevel gear on the top, and the epicyclic bevel gear is sandwiched between the two bevel gears on the first center wheel and the second center wheel, and meshes with these two bevel gears at the same time. The gear system provided by the utility model can well realize the transmission function of 2:1 in the same direction. Since the gears used are arranged sequentially in the axial direction, the epicyclic bevel gear does not occupy additional radial space, so the size of the product can be greatly reduced. The overall diameter makes the product more competitive.

Description

Bevel gear system for multi-core optical fiber slip ring

technical field

The invention relates to a multi-core optical fiber slip ring, in particular to a bevel gear system for a multi-core optical fiber slip ring.

Background technique

Optical fiber slip ring is used to solve the problem of optical signal transmission between two relatively rotating parts, and it is a new research hotspot in the field of optical communication. The transmission structure is an important research content in the development of high-quality optical fiber slip rings.

At present, the most widely used technical solution for multi-core optical fiber slip rings is to use Dove prisms to reverse and real-time compensate the rotor optical path around the axis, so as to ensure that the stator end can receive the optical signal of the rotor end when it is in a static position. The requirement for the transmission mechanism of this scheme is that the rotation ratio of the rotor and the main shaft is 2:1 in the same direction. In addition, in order to ensure the stability of the optical transmission, the transmission is also required to be stable.

Contents of the invention

The technical problem to be solved by the present invention is to provide a compact bevel gear system for multi-core optical fiber slip ring with fixed transmission ratio.

The present invention adopts the following technical solutions to solve the above-mentioned technical problems: a bevel gear system for a multi-core optical fiber slip ring, including a first center wheel, a second center wheel and a main shaft arranged coaxially, the first center wheel, the second Both the center wheel and the main shaft are of tubular structure, and a Dove prism is installed in the center hole of the main shaft. The first center wheel and the second center wheel are respectively set on both ends of the main shaft, and form a rotation fit with the main shaft; the first center wheel 1. A bevel gear is respectively provided at the opposite ends of the second center wheel, and the gear ratio of the two bevel gears is 1:1. The outer ring surface of the main shaft is also provided with an epicyclic bevel gear. The axis is perpendicular to the axis of the main shaft, and the epicyclic bevel gear is sandwiched between the two bevel gears on the first center wheel and the second center wheel, and meshes with these two bevel gears at the same time; the epicyclic bevel gear has at least Two epicyclic bevel gears are evenly spaced along the circumferential direction of the main shaft.

The advantage of the present invention is that: the gear system provided by the present invention can well realize the transmission function of 2:1 in the same direction, and since the gears used are arranged sequentially in the axial direction, the epicyclic bevel gear does not occupy additional radial space, so it can The overall diameter of the product is greatly reduced, making the product more competitive.

Description of drawings

Fig. 1 is a sectional view of the present invention;

Figure 2 is an axial view of the present invention.

detailed description

The present invention will be described in detail below in conjunction with the accompanying drawings.

As shown in Figure 1, a bevel gear system for a multi-core optical fiber slip ring includes a first center wheel 1, a second center wheel 2 and a main shaft 3 arranged coaxially, the first center wheel 1, the second center wheel 2. The main shaft 3 is a tubular structure, and the central hole of the main shaft 3 is equipped with a Dove prism 12. The first center wheel 1 and the second center wheel 2 are respectively set on the two ends of the main shaft 3, and form a rotational fit with the main shaft 3; The opposite ends of the first center wheel 1 and the second center wheel 2 are respectively provided with a bevel gear 4, and the gear ratio of the two bevel gears 4 is 1:1. There is an epicyclic bevel gear 5, the axis of the epicyclic bevel gear 5 is perpendicular to the axis of the main shaft 3, and the epicyclic bevel gear 5 is sandwiched between the two bevel gears 4 on the first center wheel 1 and the second center wheel 2, And mesh with the two bevel gears 4 at the same time; as shown in Figure 2, the epicyclic bevel gears 5 are provided with at least two, and each epicyclic bevel gears 5 are evenly spaced along the circumferential direction of the main shaft 3, and the present embodiment preferably adopts two A epicyclic bevel gear 5. In actual use, the first center wheel 1 and the second center wheel 2 are respectively connected to an optical fiber. When the two center wheels rotate relative to each other, the bevel gear mechanism can drive the main shaft 3 to rotate, and the rotation speed is the relative rotation speed of the two center wheels. Half, because the gears used are arranged sequentially in the axial direction, the epicyclic bevel gear 5 does not occupy additional radial space, so the overall diameter of the product can be greatly reduced, making the product more competitive.

Preferably, a main shaft bearing 6 is provided between the outer ring surface of the main shaft and the inner ring surfaces of the first center wheel 1 and the second center wheel 2 . There are four main shaft bearings 6 in total, two main shaft bearings 6 are installed in the inner hole of the first center wheel 1 , and the other two main shaft bearings 6 are installed in the inner hole of the second center wheel 2 . Adjustment rings 7 are used to separate the two main shaft bearings 6 in the inner hole of the first center wheel 1 and the two main shaft bearings 6 in the inner hole of the second center wheel 2 . The first center wheel 1 and the second center wheel 2 are provided with a limiting convex ring 10 on the inner ring surface of one end far away from each other. Lean on the limiting protruding ring 10 . Two pressure rings 11 are also provided on the outer ring surface of the main shaft 3, and the two pressure rings 11 are respectively placed on both sides of the epicyclic bevel gear 5, and the two pressure rings 11 are respectively against the first center wheel 1 and the second center wheel 2 On the main shaft bearing 6 close to the bevel gear 4. The adjustment ring 7, the limiting convex ring 10, and the pressure ring 11 all abut against the end surface of the outer ring of the main shaft bearing 6, and a step is provided on the outer ring surface of the main shaft 3 corresponding to the pressure ring 11. The stepped portion abuts against the inner ring end face of the spindle bearing 6 . The epicyclic bevel gear 5 is mounted on the stepped shaft 8 protruding radially from the main shaft 3 on the outer ring surface of the main shaft 3 , and an epicyclic bearing 9 is provided between the epicyclic bevel gear 5 and the stepped shaft 8 .

The assembly process of the present invention is as follows: two main shaft bearings 6 are installed in the inner hole of the first center wheel 1, and the two main shaft bearings 6 are separated by an adjustment ring 7; the other two main shaft bearings 6 are also installed on the second center wheel Inside the wheel 2, the two main shaft bearings 6 are separated by an adjustment ring 7; The epicyclic bearing 9 is installed in the inner hole of the epicyclic bevel gear 5; the above-mentioned pre-assembled part is installed on the stepped shaft 8 protruding from the main shaft 3.

The above descriptions are only preferred embodiments of the invention, and are not intended to limit the invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the invention shall be included in this invention. within the protection scope of inventions and creations.

Claims (8)

1. a multi-core fiber slip ring bevel gear system, it is characterised in that: include the first center being coaxially disposed Wheel, the second centre wheel and main shaft, described first centre wheel, the second centre wheel, main shaft be tubular structure, The centre bore of main shaft is built with Dove prism, and described first centre wheel, the second centre wheel are set in main shaft Two ends, and be rotatably assorted with main shaft composition；One end that described first centre wheel, the second centre wheel are relative to each other It is respectively provided with a bevel gear, and the tooth of two bevel gears is than for 1:1, and the outer ring surface of described main shaft is additionally provided with week Turning bevel gear, the axis of described turnover bevel gear is vertical with the axis of main shaft, and described turnover bevel gear is clipped in Between two bevel gears on one centre wheel, the second centre wheel, and engage with the two bevel gear simultaneously；Institute State turnover bevel gear at least provided with two, and each turnover bevel gear is arranged along main shaft circumferencial direction uniform intervals.

Multi-core fiber slip ring bevel gear system the most according to claim 1, it is characterised in that: described master The outer ring surface of axle and the first centre wheel, the second centre wheel inner ring surface between be provided with main shaft bearing.

Multi-core fiber slip ring bevel gear system the most according to claim 2, it is characterised in that: described master Axle bearing has 4, and two of which main shaft bearing is arranged in the endoporus of the first centre wheel, and two other is main Axle bearing is arranged in the endoporus of the second centre wheel.

Multi-core fiber slip ring bevel gear system the most according to claim 3, it is characterised in that: described Two main shaft bearings between two main shaft bearings in one centre wheel endoporus and in the second centre wheel endoporus it Between all separate by adjustment ring.

Multi-core fiber slip ring bevel gear system the most according to claim 4, it is characterised in that: described The inner ring surface of one end that one centre wheel, the second centre wheel are located remotely from each other is provided with position limiting convex ring, the first centre wheel, In second centre wheel, the main shaft bearing away from bevel gear is resisted against on described position limiting convex ring.

Multi-core fiber slip ring bevel gear system the most according to claim 5, it is characterised in that: described master Being additionally provided with two pressure rings on the outer ring surface of axle, two pressure rings are placed in and have enough to meet the need bevel gear both sides, and two pressure rings bear against In the first centre wheel, the second centre wheel on the main shaft bearing of bevel gear.

Multi-core fiber slip ring bevel gear system the most according to claim 6, it is characterised in that: described tune The domain, position limiting convex ring, pressure ring are all resisted against on the cycle surface of main shaft bearing, on described main shaft outer ring surface with Pressure ring corresponding position is provided with stage portion, and described stage portion is resisted against on the inner ring end face of main shaft bearing.

Multi-core fiber slip ring bevel gear system the most according to claim 1, it is characterised in that: described week Turn bevel gear to be arranged on main shaft outer ring surface along the multidiameter of main shaft radial projection setting, described turnover umbrella tooth It is provided with turnover bearing between wheel and multidiameter.