CN202228604U

CN202228604U - Power transmission mechanism

Info

Publication number: CN202228604U
Application number: CN2011203487514U
Authority: CN
Inventors: 吴靖; 吕芝飞; 陈格兵; 陆丹红
Original assignee: WUXI YANGTONG MACHINERY EQUIPMENT CO Ltd
Current assignee: WUXI YANGTONG MACHINERY EQUIPMENT CO Ltd
Priority date: 2011-09-19
Filing date: 2011-09-19
Publication date: 2012-05-23
Anticipated expiration: 2021-09-19

Abstract

The utility model relates to a power transmission mechanism, which includes a pair of transmission gears (1) and two transition gears (2), wherein the gear A surface of one of the transition gears (2) is constantly meshed with the D surface of the transmission gear (1); and the B surface of the other transition gear is constantly meshed with the C surface of the transmission gear. The power transmission mechanism has a simple structure, eliminates a return clearance, is highly practical, and greatly improves the transmission performance.

Description

A kind of power-transmitting unit

Technical field

The utility model relates to a kind of driving mechanism, relates in particular to a kind of high pulling torque power transmission arrangment.Be large-tonnage positioner, turning rolls power-transmitting unit specifically.

Background technique

Positioner, turning rolls are the automatic welding devices that is widely used in industries such as boiler, chemical industry, wind-powered electricity generation, nuclear power; In recent years; Along with manufacturing development such as boiler, chemical industry, wind-powered electricity generation, nuclear powers, the internal and international demand of positioner, turning rolls welding equipment constantly enlarges, and tonnage also requires increasing; The precision of welding equipment and security requirement are also increasingly high, particularly return gap in the power transmission system.Because of normal gear engagement, for guaranteeing: (1) prevents owing to the sum of errors thermal distortion of gear pair the gear teeth to be blocked; (2) leave the space for the lubricant film between the flank of tooth, therefore, all leave the crack between gear.And, can make worktable under the effect of gravitational moment, produce " kick " phenomenon with regard to the existence of the backlash of this necessity, this " kick " can influence welding quality, can influence the in-placing precision of weldment and the path accuracy of weld seam when being used with robot.Will improve machining accuracy and will reduce the flank sideshake, can extension of the work cycle.

Also have now and adopt the disappear mode of backlash of spring or hydraulic way, but its mechanism is complicated, control is also complicated, makes processing and matching requirements all than higher.

The model utility content

The utility model problem to be solved provides a kind of return gap of can realizing eliminating, and can improve the driving mechanism of transmission capacity again.

The purpose of the utility model is to provide a kind of power-transmitting unit; Comprise a pair of driving gear 1; Also comprise two transition gears 23, the D face of said transition gear 2 one of them gear A face and said driving gear 1 meshes all the time, and another transition gear B face and C face mesh all the time.

The A face of said two transition gears 2 all with the engagement of the D face of said driving gear 1.

Said mechanism is installed on positioner or the turning rolls.

The technique effect that the utility model can be realized comprises:

1, simple in structure, eliminated the return gap;

2, with low cost;

3, practical, improved transmission capacity.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Fig. 1 is the power transmission arrangment of the utility model

Wherein, 1 driving gear, 2 transition gears.

Embodiment

In order more specifically to describe the technological scheme of the utility model, will combine accompanying drawing that the utility model is done further below and set forth, but the utility model is not limited to the scope that embodiment is explained.

In conjunction with Fig. 1; The power-transmitting unit of the utility model comprises a pair of driving gear 1, also comprises two transition gears 2; The A face of one of them transition gear 2 and the D face of driving gear 1 mesh all the time, and the B face of another transition gear 2 and the C face of driving gear 1 mesh all the time.When the gear entry into service, owing to mesh all the time between two transition gears 2 and the driving gear 1, thereby can reach the purpose in the crack that disappears, and ensure the transmission performance of power.

When the A of two transition gears 2 face during, can improve transmission capacity all with the D face of driving gear 1 engagement design.

The driving mechanism of the utility model can be installed in positioner or turning rolls etc. to be needed on the power transmission arrangment of high pulling torque.

Claims

1. power-transmitting unit; Comprise a pair of driving gear (1), it is characterized in that, also comprise two transition gears (23); The D face of one of them gear A face of said transition gear (2) and said driving gear (1) meshes all the time, and another transition gear B face and C face mesh all the time.

2. power-transmitting unit according to claim 1 is characterized in that, the A face of said two transition gears (2) all with the engagement of the D face of said driving gear (1).

3. according to any described power-transmitting unit of claim 1-2, it is characterized in that said mechanism is installed on positioner or the turning rolls.