CN2886222Y

CN2886222Y - Inlaid gear

Info

Publication number: CN2886222Y
Application number: CN 200620083110
Authority: CN
Inventors: 杨树萍
Original assignee: Jinan Heavy Industry JSCL
Current assignee: Jinan Heavy Industry JSCL
Priority date: 2006-04-17
Filing date: 2006-04-17
Publication date: 2007-04-04
Anticipated expiration: 2016-04-17

Abstract

The utility model discloses a mosaic gear including a gear ring sleeved on the wheel center, wherein the wheel center with a key slot on the inner wall is fitting with the interference of the gear ring, and a pin is provided on the joint of the wheel center and the gear ring. The utility model has reasonable structure, low cost, good performance and great stability, not only lows the cost, but also overcomes the shortcomings of the traditional gear, such as high cost and existing abscess air holes on the surface of the gear. The utility model is especially applicable to the speed reducer of the coal mill.

Description

A kind of inserted gear

(1) technical field

The utility model relates to a kind of inserted gear.

(2) background technique

At present, the gear principal mode is cast gear and forges gear.The cast gear cost is low, but easily has defectives such as pore, sand holes on the flank of tooth after the processing, and this defective not only is difficult for repairing, and in use also can have many hidden danger.Forge gear and can guarantee that above-mentioned defective does not appear in the flank of tooth, performance is good, but solid forging cost height, and complicated because of gear shape, Forging Technology is complicated.

(3) summary of the invention

The technical problems to be solved in the utility model is: provide a kind of difficult generation pore, sand holes, inserted gear easy to make.

In order to solve the problems of the technologies described above, the utility model comprises core wheel and gear ring, and gear ring is enclosed within on the core wheel, core wheel and gear ring interference fit, and core wheel and gear ring joint are provided with pin, on the inwall of core wheel keyway are arranged.

For weight reduction and save material, the lightening hole of triangle arc transition is arranged on the described core wheel.

The beneficial effects of the utility model are: the utility model is rational in infrastructure, and cost is low, favorable working performance, good stability, not only reduce cost, and improved the conventional gears flank of tooth and have sand holes, pore and defect of high cost, be highly suitable for the speed reducer of coal pulverizer.

(4) description of drawings

Fig. 1 is the main TV structure schematic representation of the utility model user mode;

Fig. 2 is the right elevation of Fig. 1.

Wherein: 1, core wheel, 2, gear ring, 3, gear shaft, 4, pin, 5, key, 6, lower velocity shaft, 7, lightening hole.

(5) embodiment

This specific embodiment is by core wheel 1, gear ring 2 and sell 4 and form.On the inwall of core wheel 1 keyway is arranged, gear ring 2 is fixed on the core wheel 1 by interference fit, and pin 4 is installed in gear ring 2 and closes in the pin-and-hole of processing with core wheel 1, plays the role of positioning.

As shown in Figure 1 and Figure 2, this specific embodiment is to be applied on the coal pulverizer speed reducer, part 3 is gear shafts of coal pulverizer speed reducer among Fig. 1, part 6 is coal pulverizer speed reducer lower velocity shafts, gear shaft 3 and lower velocity shaft 6 all are separately fixed on the speed reducer body, core wheel 1 is fixed on the lower velocity shaft 6 by key 5, and gear ring 2 comes transferring power with gear shaft 3 engagements.

Shape-designing and material choose with aspect: core wheel 1 has adopted cast structure, has increased triangle arc transition lightening hole 7 handsome in appearance, gives light and handy sensation, the material application carbon-steel parts, under the prerequisite that reduces cost, both guaranteed intensity and hardness, improved its wear resistance again; Gear ring 2 adopts forging structures, the material application Alloy Constructional Steel, intensity, toughness, hardenability all are improved, during quenching distortion minimum, both guaranteed intensity and toughness, improved its usability again.

Claims

1. inserted gear, it is characterized in that: comprise core wheel (1) and gear ring (2), gear ring (2) is enclosed within on the core wheel (1), core wheel (1) and gear ring (2) interference fit, core wheel (1) and gear ring (2) joint are provided with pin (4), on the inwall of core wheel (1) keyway are arranged.

2. a kind of inserted gear according to claim 1 is characterized in that: the lightening hole (7) that the triangle arc transition is arranged on the described core wheel (1).