CN202125573U

CN202125573U - Four-gear transmission mechanism

Info

Publication number: CN202125573U
Application number: CN2011202050007U
Authority: CN
Inventors: 宋俊杰; 张聪敏
Original assignee: Guangzhou Tech Long Packaging Machinery Co Ltd
Current assignee: Guangzhou Tech Long Packaging Machinery Co Ltd
Priority date: 2011-06-17
Filing date: 2011-06-17
Publication date: 2012-01-25
Anticipated expiration: 2021-06-17

Abstract

The utility model discloses a four-gear transmission mechanism, which comprises four gears arranged together. Reference circles of adjacent gears are tangent with each other, and the positions of the reference circles of the four gears are determined and distributed according to a formula. The gears adjacent with each other in the four-gear transmission mechanism can both be meshed accurately, and assembly precision requirements are met. Compared with the prior art, the four-gear transmission mechanism has the advantages that 1 the gears can transmit accurately and stably, and impact and noise are avoided; 2 abrasion between the gears in a transmission process can be greatly reduced, and service life of the gears is prolonged; and 3 a phenomenon of teeth biting caused by heat expansion of the gears when the gears vibrate or rub in the transmission process is prevented.

Description

A kind of four gear drives

Technical field

The utility model relates to a kind of gear drive, particularly a kind of four gear drives.

Background technique

The gear that four gear drives are arranged in together by four and its gear shaft is parallel to each other constitutes; The center of circle of its four gears is the quadrilateral distribution and adjacent in twos gear is meshing with each other; During work; Can drive other three driven gears by main drive gear and rotate simultaneously, the motion between the realization gear and the transmission of power.

Existing technology is assembled the approximate location that four gear drives are tangent four gears of known conditions layout of its standard pitch circle when mesh according to four gear drives earlier; Then; Transmitting gear in the placement location of regulating four gears; And till the gear that is adjusted to four gear drives repeatedly can rotate simultaneously, but this assembly method efficient is low, and depend on assembly crewman's subjective judgement to a great extent; Four gear drives that assembling is accomplished often can't reach assembly precision and require (being the adjacent equal correct engagement of gear); And when the assembly precision of four gear drives can't reach requirement, then firmly firmly can cause the generation of scenario: 1, gear be difficult to accurately, transmission reposefully, produce to impact and noise.2, the wearing and tearing of aggravation between the gear in the transmission process influence working life of gear.3, transmission process occur easily because of gear vibration or gear teeth frictional heating expand cause sting the tooth phenomenon.

Summary of the invention

The purpose of the utility model is to provide a kind of four gear drives, and the assembly precision between its gear is high.

Described four gear drives of the utility model comprise four gears that are arranged in together, and the standard pitch circle of adjacent gear is tangent, and the home position of the standard pitch circle of four gears by formula

Figure 2011202050007100002DEST_PATH_IMAGE001

Come to confirm and arrange that wherein, A, B, C, 4 of D are the point of contact between the standard pitch circle of adjacent gear; Be ∠ AO ₁B is less than the arc length of 180 ° arc section;

Figure 2011202050007100002DEST_PATH_IMAGE003

Be ∠ BO ₂C is greater than the arc length of 180 ° arc section;

Be ∠ CO ₄D is less than the arc length of 180 ° arc section;

Figure 2011202050007100002DEST_PATH_IMAGE005

Be ∠ AO ₃D is less than the arc length of 180 ° arc section;

Be module.

Described a kind of four gear drives of the utility model; Because it is on the tangent in twos basis of the standard pitch circle that guarantees four gears; With the home position of its standard pitch circle by formula confirm and arrange; Gear adjacent in twos in four gear drives all can accurately be meshed; Satisfy the assembly precision requirement, compared with prior art, these four gear drives have following beneficial effect; 1, its gear can be accurately, transmission reposefully, prevent to produce and impact and noise; 2, can significantly reduce the wearing and tearing between the gear teeth in the transmission process, improve the working life of gear; 3, can prevent that the phenomenon of stinging tooth that expands and cause because of gear vibration or gear teeth frictional heating from appearring in transmission process.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is the assembling schematic diagram of the utility model.

Fig. 3, Fig. 4 are the user mode reference drawings of the utility model.

Embodiment

Like Fig. 1, shown in Figure 2; Described a kind of four gear drives of the utility model; Comprise four

gears

1,2,3,4 that are arranged in together; The big I of these four

gears

1,2,3,4 is selected according to actual needs, and the standard pitch circle of adjacent in twos gear is tangent, and the home position of the standard pitch circle of four

gears

1,2,3,4 by formula

Be ∠ BO ₂C is greater than the arc length of 180 ° arc section;

Be ∠ CO ₄D is less than the arc length of 180 ° arc section;

Be ∠ AO ₃D is less than the arc length of 180 ° arc section; Be module, it is a reference value, Then be the pitch of gear, the pitch of four

gears

1,2,3,4 equates.

Particularly after four

gears

1,2,3,4 are arranged; The result of calculation of

belongs in the scope of " integer ± 0.1 "; When being " integer+0.1 ", " integer-0.1 ", " integer+0.09 ", " integer-0.09 ", " integer+0.06 ", " integer-0.06 ", " integer+0.05 ", " integer-0.05 ", " integer+0.04 ", " integer-0.04 ", " integer+0.02 ", " integer-0.02 ", " integer+0.01 " or numerical value such as " integers-0.01 " like its result, four

gears

1,2,3,4 all can accurately mesh in twos.

Furthermore; After four

gears

1,2,3,4 are arranged; The result of calculation of

belongs in the scope of " integer ± 0.01 "; When being " integer+0.01 ", " integer-0.01 ", " integer+0.009 ", " integer-0.009 ", " integer+0.006 ", " integer-0.006 ", " integer+0.005 ", " integer-0.005 ", " integer+0.004 ", " integer-0.004 ", " integer+0.002 ", " integer-0.002 " or numerical value such as " integers " like its result; The effect of engagement is preferable in twos in four

gears

1,2,3,4; Especially when four

gears

1,2,3,4 standard pitch circle satisfies time, it is better that it meshes effect.

The type of described four

gears

1,2,3,4 can come to select as required, and these four gears (1,2,3,4) are the gear that pitches such as straight toothed spur gear, helical gear, herringbone tooth cylindrical gears, circular-arc gear or pin gear equal circumference distribute.

Like Fig. 3, shown in Figure 4; The gear teeth of described

gear

1,2,3,4 can be one deck (being illustrated in figure 3 as the situation of one deck); Also can be multilayer (being illustrated in figure 4 as two-layer situation), adopt multilayer wheel toothing can realize many velocity ratio outputs of four gear drives.

As shown in Figure 3; In four

gears

1,2,3,4; Having two adjacent gears to be meshed with two adjacent outer gear (is meshed with two adjacent external teeth for

gear

1,3 like what Fig. 3 represented; And

gear

2,4 situation about being meshed) with two adjacent external teeth; Its standard pitch circle is tangent in twos; And the home position of standard pitch circle equally by formula is confirmed and is arranged, and the utlity model has the four gear transmission functions that join thereby make more.

As shown in Figure 3; A gear be meshed with three adjacent in twos outer gear (situation of representing like Fig. 3 about being meshed with three adjacent in twos outer gear for gear 4) is arranged in described four gears (1,2,3,4); Its standard pitch circle is tangent in twos, and the home position of its standard pitch circle by formula come to confirm and arrange.Further improve many four gear transmission functions of the utility model.

As shown in Figure 4, in four

gears

1,2,3,4, have at least on the gear shaft of a driven

gear

2,3,4 adjacent the clutch (not shown) is installed with main drive gear 1; This clutch is an existing technology; Here no longer its structure is given unnecessary details, when clutch is closed, corresponding driven gear and be meshed (simultaneously with the outer gear of these four

gear

1,2,3,4 different layers; Four

gears

1,2,3,4 keep engagement in twos), the velocity ratio that output is corresponding; And when throw-out-of clutch, can make corresponding driven gear and be separated (and four

gears

1,2,3,4 keep engagement) with the outer gear of these four

gear

1,2,3,4 different layers.And then can select closure or throw off corresponding clutch according to different transmission demands.

The assembly method of described a kind of four gear drives of the utility model, it comprises the steps:

A, the tangent known conditions of its standard pitch circle when meshing according to four gear drives, the approximate location of arranging four gears;

B, measure or obtain ∠ AO respectively ₁B, ∠ BO ₂C, ∠ AO ₃D, ∠ CO ₄The angle value of D, and according to the standard pitch diameter D of these known four gears ₁, D ₂, D ₃, D ₄Size and circular arc arc length formula , calculate respectively

,

,

,

Length value after, through formula

Check and consequently be not " integer ± 0.1 ";

C, then satisfy matching requirements and accomplish assembling work if its result satisfies

; And if when not satisfying; Then on the tangent basis of the standard pitch circle that guarantees four gears; Relative position between the fine setting gear; And test by operation b, the result up to

is " integer ± 0.1 ".

Among the described step c; When

fine setting gear

1,2,3, relative position between 4; Can keep the invariant position of main drive gear 1 and a driven gear adjacent, and

gear

1,2,3, the relative position between 4 are finely tuned in the position of moving two other driven gear with main drive gear 1.

Claims

1. a gear drive comprises four gears (1,2,3,4) that are arranged in together, and the standard pitch circle of adjacent gear (1,2,3,4) is tangent, it is characterized in that: the home position of the standard pitch circle of four gears (1,2,3,4) by formula

Come to confirm and arrange that wherein, A, B, C, 4 of D are the point of contact between the standard pitch circle of adjacent gear (1,2,3,4);

Be ∠ AO ₁B is less than the arc length of 180 ° arc section;

Be ∠ BO ₂C is greater than the arc length of 180 ° arc section;

Be ∠ CO ₄D is less than the arc length of 180 ° arc section;

Be ∠ AO ₃D is less than the arc length of 180 ° arc section;

Be module.

2. a kind of four gear drives according to claim 1; It is characterized in that the home position of the standard pitch circle of four gears (1,2,3,4) by formula

is confirmed and arranged.

3. a kind of four gear drives according to claim 2; It is characterized in that the home position of the standard pitch circle of four gears (1,2,3,4) by formula

is confirmed and arranged.

4. a kind of four gear drives according to claim 1 is characterized in that, described four gears (1,2,3,4) are the gear that pitch such as circumference distributes.

5. a kind of four gear drives according to claim 4 is characterized in that, described four gears (1,2,3,4) are straight toothed spur gear, helical gear, herringbone tooth cylindrical gears, circular-arc gear or pin gear.

6. a kind of four gear drives according to claim 1 is characterized in that, described gear (1,2,3,4) has one deck gear teeth at least.

7. a kind of four gear drives according to claim 1; It is characterized in that; In described four gears (1,2,3,4); There are two adjacent gears to be meshed with two adjacent outer gear; Its standard pitch circle is tangent in twos, and the home position of its standard pitch circle by formula

come to confirm and arrange.

8. a kind of four gear drives according to claim 1; It is characterized in that; There is a gear to be meshed in described four gears (1,2,3,4) with three adjacent in twos outer gear; Its standard pitch circle is tangent in twos, and the home position of standard pitch circle by formula

come to confirm and arrange.