CN201503329U

CN201503329U - Dynamic balance test tool

Info

Publication number: CN201503329U
Application number: CN2009202197485U
Authority: CN
Inventors: 胡康民
Original assignee: CNR Datong Electric Locomotive Co Ltd
Current assignee: CRRC Datong Co ltd
Priority date: 2009-10-20
Filing date: 2009-10-20
Publication date: 2010-06-09
Anticipated expiration: 2019-10-20

Abstract

A dynamic balance test tool comprises a connecting shaft, a first bearing, a fixing bracket, a second bearing and a driven shaft, wherein the connecting shaft comprises a connecting end and a first rotating flange; the first bearing is connected with a first bearing pedestal, and the bearing pedestal is pivotally connected in the first bearing; one end of the fixing bracket is fixedly connected with the first bearing pedestal, and the fixing bracket is provided with an accommodating space, and the first rotating flange is positioned in the accommodating space; the second bearing is connected with a second bearing pedestal, and the second bearing pedestal is fixedly connected with the other end of the fixing bracket; the driven shaft is connected with a second rotating flange and is pivotally connected in the second bearing, and the second rotating flange is positioned in the accommodating space and faces the first rotating flange. The dynamic balance testing can be performed on a double shaft type workpeice to be tested after the dynamic balance test tool provided by the utility model is connected with the prior universal hard supporting dynamic balancing machine, the dynamic unbalance vector of the workpiece to be tested can be quickly, conveniently and accurately obtained, thereby being convenient for the operation of users, and the testing cost is low.

Description

The dynamic balance running frock

Technical field

The relevant dynamic balancer of the utility model is used, is used for to be measured of twin axles such as universal shaft are carried out the dynamic balance running frock of dynamic balancing measurement especially about a kind of and balancer.

Background technology

Along with the continuous develop rapidly of China railways cause, for adapting to the requirement of " at a high speed, heavy duty ", workmanship and the security performance to locomotive requires also more and more higher at present.

The diesel locomotive for example interior used twin axle universal shaft of DF4 (east wind 4 is) diesel locomotive is a critical component that transmitted power is big, precision prescribed is high, the quality of its quality, the crudy that not only depends on each part also depends on the height of assembly quality to a great extent.When universal shaft is assembled laggard action balance test, realizing transient equilibrium after the counterweight on its two correcting plane, an important step that plays a decisive role exactly.

Classic method is after the universal shaft assembling is finished, normally in the enterprising action balance test of the specialized equipment of transmission shaft dynamic balancing machine, the universal-joint fork head flange at universal shaft two ends directly can be contained on two flanges of special-purpose dynamic balancing machine during test, then carry out dynamic balance running, this specialized equipment comprises standard axle, the equipment manufacturing cost height.And the general hard support dynamic balancing machine that is used to test multiclass single axle determinands such as impeller at present YYW-300A type equilibrator for example, include only a joint flange, can't directly connect to be measured of twin axle for example universal shaft carry out dynamic balance running, therefore how to utilize and transform existing general hard support dynamic balancing machine and carry out for example dynamic balancing measurement of universal shaft of to be measured of twin axle, will become one has problem to be solved.

The utility model content

The purpose of this utility model provides a kind of dynamic balance running frock, be connected with existing general hard support dynamic balancing machine and just can carry out the dynamic balancing measurement of to be measured of twin axle (for example universal shaft), can obtain to be measured unbalance dynamic vector quick and easy, exactly, and it is simple in structure, be convenient to user's operation, after removing this dynamic balance running frock, general hard support dynamic balancing machine still can carry out the dynamic balance running of to be measured of other multiclass single axle such as impeller, and testing cost is low.

A kind of dynamic balance running frock that the utility model provides comprises:

Coupling shaft, described coupling shaft comprise the link and first rotary flange;

Clutch shaft bearing is connected in the clutch shaft bearing seat, and described coupling shaft is articulated in the described clutch shaft bearing;

Fixed mount, an end of this fixed mount is fixedlyed connected with described clutch shaft bearing seat, and described fixed mount has spatial accommodation, and described first rotary flange is positioned at described spatial accommodation;

Second bearing is connected in second bearing seat, and described second bearing seat is fixedlyed connected with the other end of described fixed mount; And

Driven shaft, this driven shaft is connected with second rotary flange, and described driven shaft is articulated in described second bearing, and described second rotary flange is positioned at described spatial accommodation and faces mutually with described first rotary flange.

In a preferred embodiment, the link of described coupling shaft has circular positioning spigot, and the bearing accuracy height also is convenient to be connected with the main shaft of dynamic balancing machine, and is easy to use.

In a preferred embodiment, described first, second rotary flange has circular positioning spigot, and the bearing accuracy height is convenient to for example be connected at the two ends of universal shaft with to be measured of twin axle, and is easy to use.

In a preferred embodiment, described fixed mount comprises first end wall, second end wall and is located at connecting wall between described first, second end wall that described first, second end wall is fixedlyed connected with described first, second bearing seat respectively.

In a preferred embodiment, described first, second end wall welds mutually with described first, second bearing seat respectively, and described first, second bearing seat is in the outside of first, second end wall of described fixed mount and be fixed on the dynamic balancing machine frame.

According to such scheme, the utility model is significant with respect to the effect of prior art: dynamic balance running frock of the present utility model is after the transient equilibrium leveling, can be directly to be measured of twin axle for example be connected on the dynamic balance running frock and tests in the two ends of universal shaft, can obtain to be measured unbalance dynamic vector quick and easy, exactly; And dynamic balance running tool structure of the present utility model is simple, be convenient to user's operation, can utilize or reequip the dynamic balancing measurement that existing general hard support dynamic balancing machine carries out to be measured of twin axle, and after removing this dynamic balance running frock, general hard support dynamic balancing machine still can carry out the dynamic balance running of to be measured of other multiclass single axles such as impeller, very convenient, testing cost is extremely low.

Description of drawings

Fig. 1 is the cut-open view of dynamic balance running frock of the present utility model.

Fig. 2 is the user mode synoptic diagram of dynamic balance running frock among Fig. 1.

Fig. 3 is the vector analysis schematic diagram of the utility model dynamic balance running frock unbalance dynamic leveling.

Embodiment

As shown in Figure 1, 2, the utility model provides a kind of dynamic balance running frock, be used with general hard support dynamic balancing machine, can to be measured of twin axle for example universal shaft 9 carry out dynamic balancing measurement, in the utility model except universal shaft 9, to be measured of other twin axle also can be adopted dynamic balance running frock of the present utility model to carry out dynamic balancing measurement, and existing is that universal shaft 9 is that example describes with to be measured, and this dynamic balance running frock comprises:

Coupling shaft 1, coupling shaft 1 comprise the link 11 and first rotary flange 12, and wherein coupling shaft 1 is used for being connected with the main shaft 8 of dynamic balancing machine;

Clutch shaft bearing 2 is connected in clutch shaft bearing seat 3, and coupling shaft 1 is articulated in the clutch shaft bearing 2, and clutch shaft bearing seat 3 is fixed on the dynamic balancing machine frame 81, can certainly be fixed in ground;

Fixed mount 4, an end 41 of this fixed mount 4 is fixedlyed connected with clutch shaft bearing seat 3, and fixed mount 4 has spatial accommodation 42, the first rotary flanges 12 and is positioned at spatial accommodation 42;

Second bearing 5 is connected in second bearing seat, 6, the second bearing seats 6 and fixedlys connected with the other end 43 of fixed mount 4, and second bearing seat 6 also is fixed on the dynamic balancing machine frame 81, can certainly be fixed in ground; And

Driven shaft 7, this driven shaft 7 is connected with second rotary flange 71, and driven shaft 71 is articulated in second bearing 5, and second rotary flange 7 is positioned at the spatial accommodation 42 of fixed mount 4 and faces mutually with first rotary flange 12.

In a preferred embodiment, the link 11 of coupling shaft 1 has circular positioning spigot 111, and the bearing accuracy height also is convenient to be connected with main shaft 8 by hard support dynamic balancing machine, and is easy to use.

In a preferred embodiment, first rotary flange 12, second rotary flange 7 have

circular positioning spigot

121,72 respectively, and the bearing accuracy height is convenient to be connected with the two ends of universal shaft 9, and is easy to use.

In a preferred embodiment, fixed mount 4 comprises first end wall 44, second end wall 45 and be located at first, second end wall 44, connecting wall 46 between 45, first end wall 44 and second end wall 45 have the through hole 441 that supplies coupling shaft 1 and driven shaft 7 to pass respectively, 451, first,

second end wall

44,45 respectively with first, second bearing

seat

3,6 is fixedly connected, for example fixedly connected by welding manner, also can be fastenedly connected by securing member, first, second bearing

seat

3,6 are fixedly connected on first of fixed mount 4,

second end wall

44,45 in the outside to spatial accommodation 42, promptly be in the outside of spatial accommodation 42, in another embodiment, first, second bearing

seat

3,6 also can local be placed through the through hole 441 of first end wall 44 and second end wall 45, in 451.

As shown in Figure 2, the universal shaft to be measured 9 that will assemble earlier when test is installed between first rotary flange 12 and second rotary flange 71, circular positioning spigot 121 with first rotary flange 12 and second

rotary flange

7,72 location, tight by securing members such as bolt handle, coupling shaft 1 is connected with the main shaft 8 of dynamic balancing machine, under the dynamically balanced situation of dynamic balance running frock itself, start dynamic balancing machine, drive the coupling shaft 1 of dynamic balance running frock, driven shaft 7 rotates, and fixed mount 4 is because of with first, second bearing

seat

3,6 is fixedly connected, first, second bearing

seat

3,6 are fixed on dynamic balancing machine support 31, be maintained fixed on 61, therefore fixed mount 4 does not rotate in the middle of rotary course, has only coupling shaft 1, driven shaft 7 rotates and drives universal shaft to be measured 9 rotations between first rotary flange 12 and second rotary flange 7, thereby can be quick, convenient, obtain the unbalancing value and the unbalance dynamic phase place of the unbalance dynamic vector of universal shaft 9 to be measured exactly.

Dynamic balance running tool structure of the present utility model is simple, be convenient to the operation of user's survey formula, can utilize or the existing general hard support dynamic balancing machine of repacking carries out for example dynamic balancing measurement of universal shaft of to be measured of twin axle, and after removing this dynamic balance running frock, general hard support dynamic balancing machine still can carry out the dynamic balance running of to be measured of other multiclass single axles such as impeller, very convenient, testing cost is extremely low.

To introduce the trim method of the unbalance dynamic of aforementioned dynamic balance running frock below in detail.Unbalance vector in the utility model characterizes with amount of unbalance and unbalance phase, and it is a vector.The utility model adopts the relative equilibrium ratio juris just to be based on to be measured and dynamic balance running frock relative equilibrium, that is to say after recording one unbalanced to be measured it is rotated to an angle after, record this remaining unbalance vector of to be measured once more, the little of its amount of unbalance should equate greatly, has certain angular relationship between the unbalance phase, these all are known conditions, calculate for ease of handling, the certain angle of preferred rotation is 180 °, therefore same to be measured unbalance vector equal and opposite in direction that before and after the Rotate 180 degree, records, direction is opposite, under the dynamically balanced condition of supposition dynamic balance running frock, same to be measured the unbalance vector first time that before and after rotating to an angle, records, unbalance vector is with equal and opposite in direction for the second time, direction is opposite.Because when test to be measured (universal shaft 9) and test unit (dynamic balance running frock) are same rotary bodies, the unbalancing value of being surveyed is the resultant vector of to be measured and test unit (dynamic balance running frock) unbalance dynamic.Therefore, the utility model utilization relative equilibrium method principle is measured amount of unbalance A and unbalance phase θ for the first time earlier _A, then the dynamic balance running frock is motionless, with to be measured along axis Rotate 180 °, measure amount of unbalance B and unbalance phase θ for the second time _B, the survey data are carried out the mathematics manipulation of relative equilibrium and can determine dynamic balance running frock and to be measured remaining unbalance vector size separately, now be described in detail as follows:

As shown in Figure 3, suppose unbalance dynamic vector A (A, the θ that records for the first time _A), the transient equilibrium vector B (B, the θ that record for the second time behind universal shaft 9 relative fixed framves 4 Rotate 180s ° _B),

Annotate: the amount of unbalance that A------measures for the first time

θ _A--the unbalance phase that measure-----first time

The amount of unbalance that B------measures for the second time

θ _B--the unbalance phase that measure-----second time

The aequum of C------dynamic balance running frock

The amount of unbalance of D-------universal shaft

Vector A is under the supposition dynamic balance running frock transient equilibrium condition, exists during with the relative dynamic balance running frock of universal shaft Rotate 180 °, and therefore at this moment A ' should be two vectors of opposite sign but equal magnitude with A.

Be A=A '

∴A′＝D′-C

∵ B=D '+C again

MN＝B-A′＝(D′+C)-(D′-C)＝2C

∴

2 C = \sqrt{A^{2} + B^{2} - 2 AB \cos α}

(according to the oblique triangle cosine law)

Be that dynamic balance running frock unbalancing value is

C = \frac{1}{2} \sqrt{A^{2} + B^{2} - 2 AB \cos α}

α=180 °-θ wherein _B+ θ _A

Dynamic balance running frock unbalance dynamic phase place γ=θ _A+ β (according to right-angle triangle exterior angle and theorem)

Wherein

β = are \sin (\frac{B \sin α}{2 C})

(according to oblique triangle exterior angle and theorem)

In unbalancing value C that tries to achieve the dynamic balance running frock and unbalance dynamic phase place γ, also can try to achieve

The universal shaft unbalancing value

D = \sqrt{A^{2} + C^{2} - 2 AC \cos β}

Universal shaft unbalance dynamic phase place

ξ {= θ}_{A} - \arcsin (\frac{C \sin β}{D})

Here A, B, θ _A, θ _BCan both actually record, therefore the unbalancing value C of dynamic balance running frock and unbalance dynamic phase place γ all can calculate and try to achieve, amount of unbalance C and unbalance phase γ according to the dynamic balance running frock unbalance vector of trying to achieve give dynamic balance running frock counterweight, when C=0, vector A, B opposite sign but equal magnitude (being α=0), therefore, if the unbalance vector A that records for twice, the B opposite sign but equal magnitude, the transient equilibrium of dynamic balance running frock is described, do not need counterweight, opposite then repeat the process of front, till balance, very simple and convenient, cost is low, and the cycle is short, and the dynamic balance running frock after leveling can be carried out to be measured test, can be quick, convenient, obtain to be measured for example unbalance dynamic vector of universal shaft 9 exactly.

The above only is an embodiment of the present utility model, can not limit the scope that the utility model is implemented with this, and all equivalent variations and modifications of doing according to the utility model all should belong to protection domain of the present utility model.

Claims

1. a dynamic balance running frock is characterized in that, comprising:

2. dynamic balance running frock according to claim 1 is characterized in that the link of described coupling shaft has circular positioning spigot.

3. dynamic balance running frock according to claim 1 is characterized in that, described first, second rotary flange has circular positioning spigot.

4. dynamic balance running frock according to claim 1, it is characterized in that, described fixed mount comprises first end wall, second end wall and is located at connecting wall between described first, second end wall that described first, second end wall is fixedlyed connected with first, second bearing seat respectively.

5. dynamic balance running frock according to claim 4, it is characterized in that, described first, second end wall welds mutually with described first, second bearing seat respectively, and described first, second bearing seat is in the outside of first, second end wall of described fixed mount and be fixed on the dynamic balancing machine frame.