CN201047436Y

CN201047436Y - Speed reducer capable of eccentric adjusting to shaft

Info

Publication number: CN201047436Y
Application number: CNU2007200687851U
Authority: CN
Inventors: 张昂; 胡忠群; 孔利明
Original assignee: Baosteel Group Corp
Current assignee: Baosteel Group Corp
Priority date: 2007-04-10
Filing date: 2007-04-10
Publication date: 2008-04-16
Anticipated expiration: 2017-04-10

Abstract

The utility model provides a reducer which carries out the eccentric adjustment to a shaft, comprising a gear shaft as an input shaft connected with a motor by an extension end; the gear shaft (small gear) drives a large gear which is fixed on a shaft. The utility model is characterized in that two ends of the shaft are respectively sleeved with a sliding bearing and an eccentric shaft sleeve from internal to external; two ends of the gear shaft are respectively sleeved with the sliding bearing and the eccentric shaft sleeve from internal to external. The reducer which can carry out the eccentric adjustment to the shaft provided in the utility model has good application effect in practical skill teaching, improves the technical content of skill training of a small reducer, solves the technical difficulties in the training process, explains the working principle by details, improves the skill application level of employees by practical operation training, greatly saves the cost of site equipment maintenance, and improves the service life of the maintenance of large equipment.

Description

A kind of speed reducer that can carry out eccentric adjustment to axle

Technical field

The utility model relates to the speed reducer that can carry out eccentric adjustment to axle in a kind of mechanical field.

Background technique

At present, in order to improve worker's repair of machine technical ability, utilize ZD one-level helical speed reduction gear mini-plant to carry out skills training teaching equipment to the worker.

Fig. 1 opens the back structural representation for the upper box lid of packaged reducer of the prior art, gear shaft 7 ' as input shaft, external part connects with motor, gear shaft 7 ' two ends install 2 rolling bearings 9 ', gear shaft 7 ' (small gear) drive gearwheel 17 ', gearwheel 17 ' be fixed on axle 19 ' on, 2 rolling bearings 22 of axle 19 ' two ends installation ', gear shaft 7 ' (small gear) drives gearwheel a 17 ' one-level speed change, and speed ratio is 1: 5.7, the axle 19 ' output of slowing down.

Technology is used and is in the existing training:

1, the disassemble or assemble of input in the grasp gear-box, output shaft group part and axial clearance are measured with adjustment and are reached the requirement of regulation assembly precision, and installation defensive position Moving plate axle rotates flexibly.

2, the coupling centering of motor output shaft and speed reducer input shaft exercise.

Deficiency is in the existing training technique:

1, this packaged reducer is less owing to two modules in training, and diaxon centre distance nearer (150 millimeters), and the normal module of gear is little, cause the gear side gap little, be difficult to carry out backlash with dial gauge and measure, the data of actual measurement do not have to change substantially, are difficult to say something.

If 2, on-the-spot run into the relatively poor or main shaft of two teeth engagement situation and bearing wear serious, need to carry out big adjustment after the reparation, if any such training request, this cover packaged reducer is not because of there being the excentric sleeve structure, be used for adjusting eccentric position, thereby change the centre distance of axle, drive the change contact position that axle cogs simultaneously, so this cover packaged reducer just has no idea to carry out this training.

3, main shaft and bearing have loosening phenomenon in the measuring phase, thereby cause survey data incorrect, have influence on assembly quality.

When 4, we find that in the investigation process scene is repaired machine high speed rotating kind equipment, because of some maintenance man is ignorant of eccentric adjustment technology adjustment method, thereby directly influence gear-driven accuracy, make the aggravation of two gear wears, finally cause machine to produce failure cause, cause the business economic loss very big.

At above situation, grasp this eccentric adjustment technology in order to improve the worker, proposed packaged reducer is improved.

The model utility content

A kind of speed reducer that can carry out eccentric adjustment to axle that the utility model provides can solve and utilize existing packaged reducer to give middle deficiency training.

In order to achieve the above object, the utility model provides a kind of can carry out the eccentric speed reducer of adjusting to axle, and mainly comprise: gear shaft is as input shaft, external part connects with motor, gear shaft (small gear) drives gearwheel, and gearwheel is fixed on the axle (input shaft), and its characteristics are:

Distance ring (size actual detected), sliding bearing are installed from the inside to the outside at the two ends of axle (output shaft) respectively; Excentric sleeve is contained in the sliding bearing outside; Described sliding bearing is a Spielpassung with axle (output shaft);

At the two ends of gear shaft (input shaft) distance ring, sliding bearing are installed from the inside to the outside respectively; Excentric sleeve is contained in the sliding bearing outside; Described sliding bearing and gear shaft are Spielpassung;

Described sliding bearing and excentric sleeve Spielpassung.

Described gearwheel and axle are by the wide gear normal module that increases of increase gear, and the increase adjustment range, improve measurement effect.

Describedly can carry out the eccentric speed reducer of adjusting to axle and also comprise hold down gag, this hold down gag is arranged on the gear shaft two ends, can utilize casing upper bolt hole position clamping to fix, and is pressed in the excentric sleeve outside, thereby fix each excentric sleeve, can prevent loosening phenomenon in the rotation process.

What the utility model provided can carry out the eccentric speed reducer of adjusting to axle, using effect is better in the practical skill teaching, improved the technology content of packaged reducer skills training, technological difficulties in the training process have been solved, can from one small clue, one can see what is coming the explanation working principle, by the practical operation training, improved the employee skills application level, saved the cost of field apparatus maintenance greatly, the maintenance working life of improving main equipment; Utilize eccentric center principle equally, can solve different industries, in actual production, have important dissemination as the repairing of (metallurgy, automobile, chemical industry, medical science etc.) large-scale production unit machinery.

Description of drawings

Fig. 1 is the structural representation of the middle-size and small-size speed reducer of background technique;

Fig. 2 is a kind of structural representation that can carry out the eccentric speed reducer of adjusting to axle that the utility model provides;

Fig. 3 is that a kind of that the utility model provides can carry out the sliding bearing of the eccentric speed reducer of adjusting and the structural representation of excentric sleeve to axle;

Fig. 4 is a kind of structural representation that can carry out the hold down gag of the eccentric speed reducer of adjusting to axle that the utility model provides;

Fig. 5 is that the speed reducer that utilization the utility model provides carries out the eccentric structural representation of adjusting to axle.

Embodiment

Following according to Fig. 2～Fig. 5, specify better embodiment of the present utility model:

As shown in Figure 2, the utility model provides a kind of can carry out the eccentric speed reducer of adjusting to axle, and comprise: gear shaft 10 is as input shaft, external part connects with motor, and gear shaft (being small gear) 10 drives gearwheel 9, and gearwheel 9 is fixed on the axle 11, its characteristics are

Suit sliding bearing 2 and excentric sleeve 1 from the inside to the outside at the two ends of axle 11 respectively; Described sliding bearing 2 and axle 11 Spielpassung;

Suit sliding bearing 4 and excentric sleeve 3 from the inside to the outside at the two ends of gear shaft 10 respectively; Described sliding bearing 4 and gear shaft 10 Spielpassung;

Described sliding bearing 2 and excentric sleeve 1 Spielpassung.

Described gearwheel 9 and axle 11 are by changing the tip diameter and the number of teeth separately, and the gear that increases separately is wide, thereby increase the gear normal module, and increase adjustment range, improve measurement effect;

Because of the function of existing speed reducer mainly is to slow down, so former gearwheel tip diameter is Φ 256, the number of teeth is 126 teeth, and former pinion gear teeth outside diameter circle is Φ 48, and the number of teeth is 22 teeth, and the gear normal module is 2, and reduction speed ratio is 5.7; Less because of module, make profile of tooth less than normal, be difficult to carry out backlash with dial gauge and measure.The function of speed reducer of the present utility model mainly is to measure and adjust, its gearwheel 9 tip diameters are Φ 210, the number of teeth is 40 teeth, axle 11 (being small gear) tip diameter is Φ 110, and the number of teeth is 20 teeth, and the gear normal module is 5, reduction speed ratio is 2, so module of the present utility model is bigger, the profile of tooth size to fit is convenient to measure and adjust.So just very near on-the-spot large-scale reducer gear engagement effect (the gear normal module of common large-scale speed reducer is between 5～12), adjustment range also increases thereupon, is beneficial to measurement effect.

As shown in Figure 4, describedly can carry out the eccentric speed reducer of adjusting to axle and also comprise hold down gag 12, this hold down gag 12 is separately positioned on gear shaft 10 two ends, excentric sleeve 1 outside, and axle 11 two ends, and excentric sleeve 1 outside, thus fix each excentric sleeve 1.

Described hold down gag 12 is a bolt.

When the offset of exchanging bearing at the speed reducer that provides of utilization the utility model carries out practical operation, adopt following steps:

1, opens the speed reducer upper box lid, compress the excentric sleeve two ends with pressurization device and maintain static;

2, be fixed on the casing basal plane with dial gauge, the dial gauge gauge head is contacted with the flank of tooth of gearwheel, forward the gear of dial gauge to the opposite side engagement from side engagement, the difference of reading is sideshake on the dial gauge.(or with the lead extrusion method the flank of tooth along facewidth two ends two soft lead wires of parallel placement, diameter generally is 2～3 times of sideshake, rotates two gears being meshed, measures and is pressed soft lead wire, by splenium position size, is sideshake with miking.)

3, example explanation (as shown in Figure 5): a pair of driving gear is arranged, and the engagement side gap is 0.18mm, and it is 0.24mm that reality is surveyed the two ends, gap, and adjusting method and computational process are as follows:

1), be again promptly 180 ° of upper and lower relations, so its every degree is 0.5 ÷ 180=0.0028mm because the excentric sleeve offset is 0.5mm;

2) the tooth back lash deducts the actual measurement gap, and obtaining the error gap is 0.24-0.18=0.06mm;

3) be 0.0028mm by excentric sleeve revolution 1 degree, how many degree 0.06mm needs so: 0.06 ÷ 0.0028=21.4 ° (getting 21 °);

4) the eccentric bushing diameter is 120mm, and girth is 120 * 3.14=376mm;

5) calculating the corresponding arc length of every degree is 376 ÷ 360=1.047mm;

6) the actual rotation arc length just can reach tooth meshing backlass 0.18mm for=1.047 * 21 °=21.98mm (getting 22mm) needs to the left or to the right eccentric rotation axis cover arc length 22mm simultaneously.(when if actual measurement data is measured actual measurement data with the lead extrusion method, need adjust the two ends excentric sleeve simultaneously, it is the same that adjusting method is caught up with face).

Can remedy because casing, axle or gear in the accumulated error of manufacturing, fit on, make the gear side gap meet technical requirements and area of contact when improving gear engagement by correct adjustment, thereby prolong the working life of machine.

Claims

1. one kind can be carried out the eccentric speed reducer of adjusting to axle, and comprise: as the gear shaft (10) of input shaft, its external part connects with motor, and described gear shaft (10) drives gearwheel (9), and this gearwheel (9) is fixed on the axle (11), it is characterized in that,

Suit sliding bearing (2) and excentric sleeve (1) from the inside to the outside at the two ends of axle (11) respectively; Described sliding bearing (2) and axle (11) Spielpassung;

Suit sliding bearing (2) and excentric sleeve (1) from the inside to the outside at the two ends of gear shaft (10) respectively; Described sliding bearing (2) and gear shaft (10) Spielpassung;

Described sliding bearing (2) and excentric sleeve (1) Spielpassung.

2. the speed reducer that can carry out eccentric adjustment as claimed in claim 1 to axle, it is characterized in that, describedly can carry out the eccentric speed reducer of adjusting to axle and also comprise hold down gag (12), this hold down gag (12) is separately positioned on gear shaft (10) two ends, excentric sleeve (1) outside, and axle (11) two ends, excentric sleeve (1) outside.

3. the speed reducer that can carry out eccentric adjustment to axle as claimed in claim 2 is characterized in that described hold down gag (12) is a bolt.

4. the speed reducer that can carry out eccentric adjustment to axle as claimed in claim 1 is characterized in that described gearwheel (9) and axle (11) are by increasing the wide gear normal module that increases of gear.