CN214367539U - Lifting speed reducer for steel rolling equipment - Google Patents

Abstract

The utility model discloses a lifting speed reducer for steel rolling equipment, including speed reduction unit and connecting axle, speed reduction unit includes the box, worm and output shaft, the worm runs through the box, the vertical direction of worm both sides is equipped with the output shaft respectively, be equipped with the worm wheel on the output shaft, worm wheel and worm meshing, speed reduction unit is a plurality of, the worm of two adjacent speed reduction units is connected with the both ends of connecting axle respectively, a plurality of speed reduction units pass through the connecting axle and connect as an organic wholely, this speed reducer is steady at operation in-process, compact structure has, long service life, bearing capacity is high, and is with low costs, advantages such as practical reliable.

Description

Lifting speed reducer for steel rolling equipment

Technical Field

The utility model relates to a speed reducer technical field especially relates to a lifting speed reducer for rolling equipment.

Background

In industrial production, a speed reducer special for a rolling mill needs to continuously work for a long time, and has the working characteristics of low speed, heavy load, large impact load and frequent impact times. With the rapid development of the steel rolling industry in China, the variety of steel products is continuously enlarged, the yield is continuously increased, the rolling speed is continuously improved, and the rolling load is gradually increased, so that the requirements on the gear transmission device of the rolling mill are higher and higher, and the transmission device has enough bearing capacity, namely, high strength, high precision, long service life and high reliability.

SUMMERY OF THE UTILITY MODEL

To the defect that above-mentioned prior art exists, the utility model provides a lifting speed reducer for rolling equipment, this speed reducer is steady at the operation in-process, has compact structure, long service life, bearing capacity height, with low costs, advantages such as practical reliable.

The utility model provides a technical scheme that its technical problem adopted is:

the lifting speed reducer for the steel rolling equipment comprises a speed reducing unit and a connecting shaft, wherein the speed reducing unit comprises a box body, a worm and an output shaft, the worm penetrates through the box body, the output shaft is arranged in the vertical direction of the two sides of the worm respectively, a worm wheel is arranged on the output shaft and meshed with the worm, the speed reducing units are multiple, the worms of the two adjacent speed reducing units are connected with the two ends of the connecting shaft respectively, and the speed reducing units are connected into a whole through the connecting shaft.

Further setting, the reduction unit is 2, is first reduction unit and second reduction unit respectively, first reduction unit with the worm of second reduction unit respectively with the connecting axle is connected, first reduction unit with the second reduction unit passes through the connecting axle is connected as an organic whole.

The first reduction unit comprises a first box body, a first worm, a first output shaft and a second output shaft, the first worm penetrates through the first box body, the first output shaft and the second output shaft are arranged in the vertical direction of the two sides of the first worm respectively, a first worm wheel is arranged on the first output shaft, a second worm wheel is arranged on the second output shaft, and the first worm wheel and the second worm wheel are meshed with the first worm respectively.

The second reduction unit comprises a second box body, a second worm, a third output shaft and a fourth output shaft, the second worm penetrates through the second box body, the third output shaft and the fourth output shaft are arranged in the vertical direction of the two sides of the second worm respectively, a third worm wheel is arranged on the third output shaft, a fourth worm wheel is arranged on the fourth output shaft, and the third worm wheel and the fourth worm wheel are meshed with the second worm respectively.

The connecting shaft is connected with the worm of the second speed reducing unit through a connecting sleeve, and the connecting shaft is connected with the worm of the first speed reducing unit through a connector.

Further, two ends of the output shaft are provided with angular contact ball bearings.

Further, deep groove ball bearings are arranged at two ends of the worm.

Further, the worm wheel and the output shaft are in interference fit.

Further, the worm wheel and the worm are meshed in a ZK tooth form.

Further, the box body is made of nodular cast iron materials.

The utility model has the advantages that:

(1) the box body is made of nodular cast iron materials and integrally cast, the structure of the box body and all connecting parts are reinforced, the mechanical structure is compact, the strength is high, and the service life is long;

(2) the heavy-load bearing can bear larger axial force and radial force;

(3) the ZK type cylindrical conical surface enveloping round worm is adopted for transmission, the ZK tooth profile efficiency is high, the speed ratio is more accurate during transmission, and the transmission is more stable.

Drawings

FIG. 1 is a cross-sectional view of a reduction unit according to the present invention;

FIG. 2 is a schematic structural diagram according to the first embodiment;

in the figure: 1. a deceleration unit; 101. a first reduction unit; 102. a second reduction unit; 2. a connecting shaft; 3. a box body; 4. a worm; 5. an output shaft; 6. a worm gear; 7. angular contact ball bearings; 8. a deep groove ball bearing; 9. a first case; 10. a first worm; 11. a first output shaft; 12. a second output shaft; 13. a first worm gear; 14. a second worm gear; 15. a second case; 16. a second worm; 17. a third output shaft; 18. a fourth output shaft; 19. a third worm gear; 20. connecting sleeves; 21. a coupler; 2101. a left coupler; 2102. and a right coupler.

Detailed Description

In order to make the technical problem, technical scheme and beneficial effect that the utility model solved more clearly understand, it is right to combine the attached drawing and embodiment below the utility model discloses do further explanation.

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

As shown in fig. 1, the lifting reducer for the steel rolling equipment comprises a reduction unit 1 and a connecting shaft 2, the reduction unit 1 comprises a box body 3, a worm 4 and an output shaft 5, the worm 4 penetrates through the box body 3, the output shaft 5 is respectively arranged in the vertical direction of two sides of the worm 4, a worm wheel 6 is arranged on the output shaft 5, the worm wheel 6 is meshed with the worm 4, the reduction units 1 are multiple, the worms 4 of two adjacent reduction units 1 are respectively connected with two ends of the connecting shaft 2, and the reduction units 1 are connected into a whole through the connecting shaft 2.

The worm wheel 6 adopts interference fit with output shaft 5 and the cooperation tolerance when the working machine hookup, has avoided the working machine to cause the workstation to rock when stopping, and is more steady during the working machine operation, and the noise is little.

The two ends of the output shaft 5 are provided with angular contact ball bearings 7 capable of bearing heavy loads, the two ends of the worm 4 are provided with deep groove ball bearings 8 capable of bearing heavy loads, the input end and the output end bearings are heavy load bearings, and therefore the output shaft can bear large axial force and large radial force, and can meet large lifting loads.

The ZK type cylindrical conical surface enveloping round worm 4 is adopted for transmission, the tooth surface of the worm 4 is a spiral surface formed by enveloping a grinding wheel, the spiral surface is nonlinear, the tooth profile is in a curve shape in each section, and compared with the ZA tooth profile, the ZK tooth profile has higher efficiency, the speed ratio is more accurate during transmission, and the transmission is more stable.

The box body 3 is made of nodular cast iron materials, and the speed reducer is good in rigidity, high in strength, compact in mechanical structure, good in heat dissipation and long in service life through a finite element analysis principle; the worm wheel 6 is made of zinc-based alloy copper material with strong wear resistance, so that the transmission efficiency, the service life and the bearing capacity are greatly improved; the worm 4 is made of 20CrMnTi material, the heat treatment is integral carbonitriding, the precision can reach 6 grades after the gear and the worm 4 thread are ground, the tooth width of the worm wheel 6 is specially widened during design, and the strong bearing capacity is ensured.

The first embodiment is as follows:

as shown in fig. 1-2, the lifting speed reducer for a steel rolling apparatus of the present embodiment includes 2 speed reducing units 1, which are a first speed reducing unit 101 and a second speed reducing unit 102, wherein the worms 4 of the first speed reducing unit 101 and the second speed reducing unit 102 are connected to a connecting shaft 2, and the first speed reducing unit 101 and the second speed reducing unit 102 are connected to each other through the connecting shaft 2.

In this embodiment, the first speed reduction unit 101 includes a first case 9, a first worm 10, a first output shaft 11 and a second output shaft 12, the first worm 10 penetrates through the first case 9, the first output shaft 11 and the second output shaft 12 are respectively arranged in the vertical direction of two sides of the first worm 10, a first worm wheel 13 is arranged on the first output shaft 11, a second worm wheel 14 is arranged on the second output shaft 12, and the first worm wheel 13 and the second worm wheel 14 are respectively engaged with the first worm 10.

In this embodiment, the second reduction unit 102 includes a second case 15, a second worm 16, a third output shaft 17 and a fourth output shaft 18, the second worm 16 penetrates through the second case 15, the third output shaft 17 and the fourth output shaft 18 are respectively arranged in the vertical direction on both sides of the second worm 16, a third worm wheel 19 is arranged on the third output shaft 17, a fourth worm wheel (not shown) is arranged on the fourth output shaft 18, and the third worm wheel 19 and the fourth worm wheel are respectively engaged with the second worm 16.

In this embodiment, the upper end of the connecting shaft 2 is connected to the second worm 16, and a connecting sleeve 20 is disposed at the connection position, and the lower end of the connecting shaft 2 is connected to the first worm 10, and a coupler 21 is disposed at the connection position, preferably, the coupler 21 includes a left coupler 2101 and a right coupler 2102, and the connecting type is flexible, the installation is simpler, and the maintenance and the overhaul are easy.

In the gear hobbing of the worm gear 6, a numerical control gear hobbing machine on a hydraulic mandrel is adopted for machining, a large plane and an inner hole are used for positioning, and the radial runout tolerance of a gear ring of the worm gear 6 is within 0.02 mm; and during gear hobbing, gear hobbing and chamfering are synchronous, so that the phenomenon that burrs are inverted after gear hobbing is avoided, the quality is improved, and the noise is reduced.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention should fall within the protection scope of the present invention.

Claims (10)

1. The lifting speed reducer for the steel rolling equipment is characterized by comprising a speed reducing unit and a connecting shaft, wherein the speed reducing unit comprises a box body, a worm and an output shaft, the worm penetrates through the box body, the output shaft is respectively arranged in the vertical direction of two sides of the worm, a worm wheel is arranged on the output shaft and meshed with the worm, the speed reducing units are multiple, the worms of two adjacent speed reducing units are respectively connected with two ends of the connecting shaft, and the speed reducing units are connected into a whole through the connecting shaft.

2. The lifting reducer for steel rolling equipment as claimed in claim 1, wherein the number of the reduction units is 2, and the reduction units are respectively a first reduction unit and a second reduction unit, the worms of the first reduction unit and the second reduction unit are respectively connected with the connecting shaft, and the first reduction unit and the second reduction unit are connected into a whole through the connecting shaft.

3. The lifting reducer for steel rolling equipment as claimed in claim 2, wherein the first reduction unit comprises a first box, a first worm, a first output shaft and a second output shaft, the first worm penetrates through the first box, the first output shaft and the second output shaft are respectively arranged in the vertical direction of two sides of the first worm, a first worm wheel is arranged on the first output shaft, a second worm wheel is arranged on the second output shaft, and the first worm wheel and the second worm wheel are respectively meshed with the first worm.

4. The lifting reducer for steel rolling equipment as claimed in claim 2, wherein the second reduction unit comprises a second box, a second worm, a third output shaft and a fourth output shaft, the second worm penetrates through the second box, the third output shaft and the fourth output shaft are respectively arranged in the vertical direction of two sides of the second worm, a third worm wheel is arranged on the third output shaft, a fourth worm wheel is arranged on the fourth output shaft, and the third worm wheel and the fourth worm wheel are respectively meshed with the second worm.

5. The lifting reducer for steel rolling equipment as claimed in claim 2, wherein a connecting sleeve is arranged at the joint of the worm of the second reduction unit and the connecting shaft, and a coupler is arranged at the joint of the worm of the first reduction unit and the connecting shaft.

6. The lifting reducer for steel rolling equipment as claimed in claim 1, wherein angular contact ball bearings are arranged at two ends of the output shaft.

7. The lifting reducer for steel rolling equipment as claimed in claim 1, wherein deep groove ball bearings are arranged at two ends of the worm.

8. The lifting reducer for steel rolling equipment as claimed in claim 1, wherein the worm gear is in interference fit with the output shaft.

9. The lifting reducer for steel rolling equipment as claimed in claim 1, wherein the worm wheel and the worm are engaged by ZK teeth.

10. The lift reducer for steel rolling equipment as claimed in claim 1, wherein the box body is made of nodular cast iron.

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