CN201908994U

CN201908994U - Expanding gear reducer for closed-loop drive

Info

Publication number: CN201908994U
Application number: CN2010206795283U
Authority: CN
Inventors: 王智军; 孙骜
Original assignee: TIANJIN JUNSHENG COMPLETE EQUIPMENT CO Ltd
Current assignee: TIANJIN JUNSHENG COMPLETE EQUIPMENT CO Ltd
Priority date: 2010-12-24
Filing date: 2010-12-24
Publication date: 2011-07-27
Anticipated expiration: 2020-12-24

Abstract

The utility model relates to an expanding gear reducer for closed-loop drive, which comprises input shafts, drive shafts, output shafts and gears, the gears on the input shafts respectively drive the drive shafts to rotate by means of the gears of the drive shafts, the drive shafts are engaged with the gears for driving the output shafts to rotate through the gears, and the output shafts are sequentially driven by the engaged gears to rotate. The expanding gear reducer is characterized in that: the gears on the front and the rear rows of input shafts are engaged in a row, and the input shafts, the drive shafts and the output shafts are engaged through the gears on the shafts to form closed-loop drive. The expanding gear reducer has the advantages that: because each pair of engaged gears can only transmit half of total load, the input shafts and the output shafts only bear half of the total load, the drive shafts only bear half of the total load, consequently, compared with other speed reducers transmitting the same power, the expanding gear reducer can allow the size of the journal to be reduced, so that the width of a case is greatly reduced, and consequently, not only the used space but also materials for production can be saved.

Description

The expansion gear reducer of closed loop transmission

Technical field

The utility model belongs to retarder, relates in particular to a kind of expansion gear reducer of closed loop transmission.

Background technique

The characteristics of gear reducer are efficient and reliability height, long working life, and easy maintenance, thereby be widely used.And the gear reducer of expansion is simple in structure most widely used a kind of.But because its gear is asymmetric with respect to bearing position, when axle produced the bending distortion, load is skewness on the facewidth.Therefore higher for the rigidity requirement of axle.Retarder with seven outputs of a single shaft input is an example.Fig. 5-7 is the structural representation of an expansion retarder, and Fig. 5 shows the radially direct of gear, and M-M sectional view and N-N sectional view show the axial distribution of gear.Axle A is an input shaft, axle B, and axle C is a transmission shaft, axle 1,2,3,4,5,6,7 is an output shaft.Motor drives axle A rotates during retarder work, and gear A drives axle B by gear B and gear C respectively and axle C rotates.The left side: axle B passes through gear B ₁Drive axle 3 rotations with the engagement of gear 3, axle 3 rotates by gear 3 and gear 2 engagement drive axles 2, and axle 2 drives axle 1 by gear 2 and gear 1 engagement and rotates; The right side: axle C passes through gear C ₁Drive axle 4 with the engagement of gear 4 and rotate, axle 4 drives axle 5 by gear 4 with gear 5 engagements and rotates, and axle 5 drives axle 6 by gear 5 with gear 6 engagements and rotates, and axle 6 drives axle 7 by gear 6 with gear 7 engagements and rotates.Be not difficult to find out that when axle produced the bending distortion, load is skewness on the facewidth.In the actual design, in order to strengthen the rigidity of axle, then will add large-diameter, so the casing width of retarder is strengthened, usage space increases, and causes the waste of material.

The model utility content

The utility model is in order to overcome deficiency of the prior art, a kind of expansion gear reducer of closed loop transmission is provided, can make every pair of meshed gears only transmit half of whole load, input shaft and output shaft only bear half of whole load, and transmission shaft only is subjected to half of whole load.

The utility model for achieving the above object, be achieved through the following technical solutions, a kind of expansion gear reducer of closed loop transmission, comprise input shaft, transmission shaft and output shaft and gear, gear on the input shaft rotates by the gear driven transmission shaft of transmission shaft respectively, transmission shaft is by gear and the gear engagement that drives the output shaft rotation, output shaft drives output shaft by the engagement driving between gear successively and rotates, it is characterized in that: the meshing Cheng Chengyi row engagement on the two row's input shafts of described front and back, input shaft transmission shaft and output shaft cog to mesh by axle and are the closed loop transmission.

Described input shaft cogs and is made as the separated type double helical spurgear.

Beneficial effect: can make every pair of meshed gears only transmit half of whole load, input shaft and output shaft only bear half of whole load, transmission shaft only is subjected to half of whole load, so compare with other retarders that transmit same power, journal size can dwindle, the width of casing has been diminished a lot, not only can save usage space, also save the material of making.

Description of drawings

Fig. 1 is gear radially direct figure of the present utility model;

Fig. 2 is the axial distribution view of the M-M gear of Fig. 1;

Fig. 3 is the axial distribution view of the N-N gear of Fig. 1;

Fig. 4 is transmission principle figure of the present utility model;

Fig. 5 is the gear radially direct figure of former retarder;

Fig. 6 be Fig. 5 the axial distribution view of M-M gear;

Fig. 7 be Fig. 5 the axial distribution view of N-N gear.

Embodiment

Below in conjunction with preferred embodiment, details are as follows to embodiment that foundation the utility model provides: see accompanying drawing 1 for details, a kind of expansion gear reducer of closed loop transmission, comprise input shaft A, transmission shaft B, C and

output shaft

1,2,3,4,5,6,7 and gear 8, gear on the input shaft rotates by the gear driven transmission shaft of transmission shaft respectively, transmission shaft is by gear and the gear engagement that drives the output shaft rotation, output shaft drives output shaft by the engagement driving between gear successively and rotates, meshing Cheng Chengyi row engagement on the two row's input shafts of described front and back, input shaft transmission shaft and output shaft cog to mesh by axle and are the closed loop transmission.Described input shaft cogs and is made as the separated type double helical spurgear.

Working principle:

As shown in Figure 3, suppose that input shaft is to rotate counterclockwise, axle A meshes the downward tangential force to axle B by gear 8-A and gear 8-B, axle B meshes to axle 3 tangential force left by gear B 1 and gear 8-3, axle 3 meshes to axle 4 to upper right tangential force by gear 8-3 and gear 8-4, axle 4 meshes to the tangential force of axle 5 to the bottom right by gear 8-4 and gear 8-5, axle 5 is given axle C tangential force left by gear 8-5 and gear C 1 engagement, axle C meshes the tangential force that makes progress to axle A by gear C and gear A, and this power just in time tangential force direction with the rotation of axle A is identical.Also be identical in like manner with the tangential force direction of the rotation of axle A from the power of axle A → axle C → axle 5 → axle 4 → axle 3 → axle B → axle A.

Working procedure:

As shown in Figure 2, motor drives axle A rotates, gear 8-A and gear 8-A1 drive axle B by gear B and gear 8-C respectively and axle C rotates, axle B drives axle 3 by gear 8-B1 and gear 8-3 engagement and rotates, gear 8-3 also meshed with gear 8-4 when axle 3 drove axle 2 and rotates by gear 8-3 and gear 8-2 engagement, and axle 2 is by a gear 8-2 and gear 8-1 engagement drive 1 rotation; Axle C drives axle 4 rotations by the engagement of gear 8-C1 and gear 8-4, axle 4 drives axle 5 by gear 8-4 and gear 8-5 engagement and rotates, axle 5 drives axle 6 by gear 8-5 and gear 8-6 engagement and rotates, and axle 6 drives axle 7 by gear 8-6 and gear 8-7 engagement and rotates.Axle A, axle B, axle 3, axle 4, axle 5, axle C cog by axle and form a closed loop transmission like this.

The above only is preferred embodiment of the present utility model, is not structure of the present utility model is done any pro forma restriction.Every foundation technical spirit of the present utility model all still belongs in the scope of the technical solution of the utility model any simple modification, equivalent variations and modification that above embodiment did.

Claims

1. the expansion gear reducer of a closed loop transmission, comprise input shaft, transmission shaft and output shaft and gear, gear on the input shaft rotates by the gear driven transmission shaft of transmission shaft respectively, transmission shaft is by gear and the gear engagement that drives the output shaft rotation, output shaft drives output shaft by the engagement driving between gear successively and rotates, it is characterized in that: the meshing Cheng Chengyi row engagement on the two row's input shafts of described front and back, input shaft transmission shaft and output shaft cog to mesh by axle and are the closed loop transmission.

2. the expansion gear reducer of closed loop transmission according to claim 1 is characterized in that: input shaft cogs and is made as the separated type double helical spurgear.