Q

JR, QJS, QJRS, QJR-D, QJS-D, QJRS-D, three pivots and base type cranes, reducer

< an overview >

QJ series reducer is suitable for all the related institutions of cranes, and also widely used in transportation, metallurgy, mining, chemical, light industry and other machinery and equipment transmission mechanism, transmission mechanism.

< two > features

1, wide range of speed reduction, nominal speed ratio of 10-200,

2 mechanical transmission efficiency, grade 2, 96%, three, 94%

3, smooth operation, noise first low.

4, because of the use of 42CrMo.35CrMo through forging, quenching and tempering treatment, respectively, the production of gear shaft and gear, so long service life, high carrying capacity

5 easy to remove and easy to install

< three > applicable conditions

1 gear circumferential speed is not greater than 16m / s.

2 high speed shaft speed is not greater than 1000r, min,

3 working environment temperature is 40 45'C

4 can operate in two directions.

< four > type and speed ratio

< five > mark

1: installation type

2: output shaft end type

3: assembly type

4: nominal transmission ratio

5: nominal center distance (output center spacing)

6: structure type

QJ: crane reducer

Tag example

The three stage transmission of the reducer is the nominal center distance ai=560mm, the nominal transmission ratio is 50, and the assembly type is the first... The end of the output shaft is a gear shaft end, and the horizontal installation is marked as a reducer QJS560-50... CW

5: output shaft end type

4: assembly type

3: nominal drive ratio

2: nominal center distance (output stage center distance)

-D: with pedestal

1: structure type

QJ: crane reducer

Tag example

A two stage reducer with a pedestal, nominal center distance a1=560mm, nominal drive ratio i=20, assembly type IV, shaft end type P, and mark as: reducer QJR - D560-20 IV P

< six > assembly type, installation type and shaft end type

1. there are nine types of assembly, as shown in figure 1:

2.QJR, QJS and QJRS mounting types: horizontal W or vertical L (V) at deflection angle + a. For horizontal mounting, vertical mounting in L range, see Figure

Note: the degree of a angle is related to the transmission ratio. When the reducer tilts a angle, it should ensure that the middle gear is stuck with 1-2 high teeth depth.

3.QJR, QJS and ajRS are three pivot support types, as shown in figure 3.

4. shaft end type: high speed shaft end adopts cylindrical shaft flat key connection, output shaft end has three kinds of patterns (see Figure 4 and table 2, 3)

A.P (T): cylindrical shaft, flat key, single key connection;

B.H (R): cylindrical shaft involute spline joint:

Type c..C: gear shaft end (only nominal center distance of 236-lOOOmm reducer) with this type of shaft end

< seven > shape and mounting dimensions

1QJR shapes and mounting dimensions are shown in Table 5 and table 4.

2QJS shapes and mounting dimensions are shown in Table 6 and table 5.

3ajRS shapes and mounting dimensions are shown in Table 7 and table 6.

4.aJR-D shapes and mounting dimensions are shown in Table 8 and table 7.

QJS-D shapes and mounting dimensions are shown in Table 9 and table 8.

QJRS-D shapes and mounting dimensions are shown in table 10 and table 9.

< eight > the maximum radial load allowed at the end of the output shaft of the reducer (as at n=950r/min) is shown in table 14

< nine > reducer selection and lubrication

1 speed reducer, the work level of each mechanism is divided into eight kinds M1-M8. The power values for the M5 work level are listed, and should be used at other job levels, according to formula PM5-PM. * 1.12 (` 9 ')

Type: kW values in the PM5- power meter;

I- work level 1-8:

PMi- power value relative to the Mi operating level kW;

When choosing, it can calculate the basic load Mmax= phi Mn according to the fatigue of each mechanism of the crane, and then convert the power Pwi=Mmax/9550

2 when selecting, it can also be divided into 15 coefficients K according to the calculated load, and then selected from the corresponding table.

4. the lubrication of the reducer

Horizontal reducer adopts oil tank splash lubrication, vertical reducer should adopt cycle injection lubrication. The lubricant is made of L-CKC100-L-CKC220 in GB/T5903.

When the ambient temperature is lower than O degrees, the user should have a lubricating oil heating device; when the oil tank splash lubrication, the oil temperature should be higher than O degrees; when using fuel injection lubrication, the oil temperature should be higher than 5 degrees to start.