CN214063686U

CN214063686U - Planetary speed reducing mechanism of roller press for cement grinding

Info

Publication number: CN214063686U
Application number: CN202022831250.3U
Authority: CN
Inventors: 姜正荣
Original assignee: Jiangshan South Cement Co ltd
Current assignee: Jiangshan South Cement Co ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-08-27
Anticipated expiration: 2030-11-30

Abstract

The utility model relates to a cement is roll squeezer planet reduction gears for grinding, include: the first box, the first bearing, the first high-speed shaft, the second bearing, the second high-speed shaft, the third bearing, the fourth bearing, the second box, the first planetary gear pair, the second planetary gear pair, the output shaft, fixedly connected with first bearing and second bearing on the first high-speed shaft, fixedly connected with third bearing and fourth bearing on the second high-speed shaft, first high-speed shaft and second high-speed shaft parallel arrangement, first bearing and third bearing are installed in the first box, second bearing and fourth bearing are installed in the second box, first box and second box pass through the bolt with the terminal surface position and link to each other. On the basis of the original planetary reducer, only the high-speed shaft stage part of the planetary reducer is changed, the motor performs transmission of speed reduction and torque increase through the speed reducing mechanism, equipment investment is reduced, vibration is reduced, the oil leakage phenomenon is avoided, the whole size is small, the transmission ratio is large, and the service life of the reducer is prolonged.

Description

Planetary speed reducing mechanism of roller press for cement grinding

Technical Field

The utility model relates to a cement preparation technical field, more specifically say, relate to a cement is roll squeezer planet reduction gears for grinding.

Background

The cement grinding system has a production process that more enterprises adopt pre-grinding and circulation, most of pre-grinding key equipment adopts a roller press, space is utilized to the maximum extent, occupied area and investment are reduced, and the transmission of the roller press adopts a mode of a motor and a planetary reducer. The rotating speed of the cement grinding roller press is very slow, and a planetary reducer is generally adopted for transmission.

The high-speed shaft of the planetary reducer of the roller press generally adopts two tapered roller bearings, the two tapered roller bearings bear axial force and radial force at the same time, after the planetary reducer is used for a certain time, the bearing clearance is enlarged, the vibration of a high-speed shaft system is enlarged, oil leakage can often occur, and the gear meshing sound is obviously enlarged. If the bearing and the gear are used for a long time, the bearing and the gear are damaged, generally, the bearing and the gear need to be overhauled at least once in one year, and if the bearing and the gear are not processed in time, the service life of the gear is influenced.

Thus, significant advances in the art are needed.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem who solves lies in improving cement grinding roller press planetary reducer life, to the defect of above-mentioned prior art, provides a cement grinding is with roller press planetary reducer constructs, include: the first box, first bearing, first high-speed axle, the second bearing, the high-speed axle of second, the third bearing, the fourth bearing, the second box, first planetary gear is vice, the vice second planetary gear, the output shaft, first bearing and second bearing of fixedly connected with on the first high-speed axle, fixedly connected with third bearing and fourth bearing on the high-speed axle of second, first high-speed axle with the high-speed axle parallel arrangement of second, first bearing and third bearing are installed in first box, and second bearing and fourth bearing are installed in the second box, and first box and second box pass through the bolt with the terminal surface position and link to each other.

Preferably, the distance between the axes of the first high speed shaft and the second high speed shaft is 350 +/-0.018 mm-450 +/-0.018 mm.

Preferably, the length of the first high-speed shaft is 250 mm-290 mm, and the first high-speed shaft bearing is supported and fixed in an angular contact bearing and cylindrical roller bearing mode.

Preferably, the diameter of the first high-speed shaft is 150 +/-0.02 mm-170 +/-0.02 mm.

Preferably, the distance between the first high-speed shaft and the second box is 908 mm-928 mm.

Preferably, the first high-speed shaft is provided with bearings which respectively comprise one QJ236 and two NUs 236, and the bearings used by the second high-speed shaft are 23048CC/W33 and 24038 CC/W33.

Preferably, the first high-speed shaft is prevented from lubricating oil seepage by adopting a labyrinth seal oil return hole mode.

Preferably, the first high-speed shaft end cover is detachable from top to bottom.

Preferably, the first box body adopts a thick-wall multi-turn form; the first box body is provided with an observation hole, and the gear condition on the second high-speed shaft in the first box body is observed through the observation hole.

Preferably, the support form of the second high speed shaft is a self-aligning roller bearing form.

Implement the utility model discloses a roll squeezer planet reduction gears for cement grinding has following beneficial effect: after the high-speed shaft is decelerated, the speed is decelerated twice through the first-stage planetary gear pair and the second-stage planetary gear pair, so that the purposes of reducing the speed and increasing the torque are achieved; on the basis of the original planetary reducer, only the high-speed shaft stage part of the planetary reducer is changed, the original first-stage and second-stage planetary gear pairs are repeatedly utilized, the equipment investment is reduced, the high-speed shaft of the planetary reducer vibrates less after being transformed, the oil leakage phenomenon is avoided, the service lives of a bearing and a gear are prolonged, and the service life of the reducer is prolonged; the whole volume is small, and the transmission ratio is large.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

fig. 1 is a schematic structural view of the planetary speed reducing mechanism of the roll squeezer for cement grinding of the present invention;

fig. 2 is a schematic view of a high-speed shaft-level structure adopted in a planetary reduction mechanism of a roller press for cement grinding in the prior art;

fig. 3 is a schematic diagram of the high speed shaft stage structure employed in fig. 1.

In the figure, 1-first housing, 2 first bearing, 3-first high speed shaft, 4-second bearing, 5-second high speed shaft, 6-third bearing, 7-fourth bearing, 8-second housing, 9-first planetary gear set, 10-second planetary gear set, 11-output shaft.

Detailed Description

Fig. 1 is a schematic structural view of the planetary reduction mechanism of the roller press for cement grinding according to the present invention. As shown in fig. 1, the planetary reduction mechanism of a roller press for cement grinding according to a first embodiment of the present invention at least includes:

the first gearbox comprises a first box body 1, a first bearing 2, a first high-speed shaft 3, a second bearing 4, a second high-speed shaft 5, a third bearing 6, a fourth bearing 7, a second box body 8 (the assembly of the parts is called a high-speed shaft stage), a first planetary gear pair 9, a second planetary gear pair 10 and an output shaft 11, wherein the first bearing 2 and the second bearing 4 are fixedly connected onto the first high-speed shaft 3, the third bearing 6 and the fourth bearing 7 are fixedly connected onto the second high-speed shaft 5, the first high-speed shaft 3 and the second high-speed shaft 5 are arranged in parallel, the first bearing 2 and the third bearing 6 are installed in the first box body 1, the second bearing 4 and the fourth bearing 7 are installed in the second box body 8, and the first box body 1 and the second box body 8 are connected through bolts at end faces.

First housing 1 first bearing 2 first high speed shaft 3 second bearing 4 second high speed shaft 5 third bearing 6 fourth bearing 8 first planetary gear set 9 second planetary gear set 10 output shaft 11 first high speed shaft 3 first bearing 2 first high speed shaft 3 second high speed shaft 3 first bearing 2 second bearing 4 second high speed shaft 5 first high speed shaft 4 fourth bearing 7 second high speed shaft 5 first housing 1 second housing 8 first housing 1, first bearing 2, first high speed shaft 3, second bearing 4, second high speed shaft 5, third bearing 6, fourth bearing 7, second housing 8 assembly is called a high speed shaft stage.

The distance between the axes of the first high speed shaft 3 and the second high speed shaft 5 is 350 +/-0.018 mm-450 +/-0.018 mm. The length of the first high-speed shaft 3 is 250 mm-290 mm, and the bearing support fixing mode of the first high-speed shaft 3 is an angular contact bearing and a cylindrical roller bearing. The first high-speed shaft 3 is realized by changing the original mode of supporting and fixing two tapered roller bearings into an angular contact bearing and a cylindrical roller bearing, and the vibration problem caused by the enlarged play caused by the use of the tapered roller bearings for a certain time is effectively solved. The diameter of the first high-speed shaft 3 is 150 +/-0.02 mm-170 +/-0.02 mm. The distance between the first high-speed shaft 3 and the second box 8 is 908 mm-928 mm.

The first high-speed shaft 3 is provided with bearings which respectively comprise one QJ236 and two NUs 236, and the bearings used by the second high-speed shaft 5 are 23048CC/W33 and 24038CC/W33 respectively. The first high-speed shaft 3 prevents the lubricating oil from seeping out by adopting a labyrinth seal and oil return hole mode. The sealing form of the first high-speed shaft 3 is changed from the original sealing ring sealing to the labyrinth oil return hole adding form, so that the oil leakage phenomenon is greatly reduced.

The end cover of the first high-speed shaft 3 is detachable from top to bottom. The bearing end cover at the 3 end of the first high-speed shaft is changed into a vertically detachable type from the original integral form, so that the inspection of the outer bearing can be conveniently carried out without detaching the coupler at ordinary times.

The first box body 1 adopts a thick-wall multi-turn form; the first box 1 is provided with an observation hole through which the gear condition on the second high-speed shaft 5 inside the first box 1 is observed. Compared with the prior art, the first box body 1 is additionally provided with an observation hole, and the gear condition on the second high-speed shaft 5 in the box body can be favorably checked.

The support form of the second high speed shaft 5 is in the form of a self-aligning roller bearing. The supporting form of the second high-speed shaft 5 is also changed from the original supporting and fixing mode of two tapered roller bearings to the self-aligning roller bearing, and the vibration problem caused by the fact that the play is increased after the tapered roller bearing is used for a certain time is effectively solved.

The number and the form of the bearings are changed, the shaft diameter of the second high-speed shaft 5 is increased, and the structures of the first box body 1 and the second box body 8 are changed, so that the rigidity of the whole high-speed shaft is greatly improved, and the vibration of the equipment during operation is further reduced. After the high-speed shaft-level bearing form is changed, the gear meshing precision is ensured by the bearing, the gear and the box body processing precision, and the original complicated working steps of field adjustment are avoided. The motor is firstly decelerated through a high-speed shaft stage and then decelerated through a first-stage planetary gear pair and a second-stage planetary gear pair for two times, so that the purposes of speed reduction and torque increase are achieved.

The utility model discloses a design of above embodiment, its beneficial effect is: on the basis of the original planetary reducer, only the high-speed stage part of the planetary reducer is changed, the original first-stage planetary gear pair and the original second-stage planetary gear pair are repeatedly utilized, the equipment investment is reduced, the vibration of the modified planetary reducer is reduced, the oil leakage phenomenon is avoided, the service lives of a bearing and a gear are prolonged, and the service life of the reducer is prolonged.

While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the invention. Furthermore, to adapt to the particular situation of the technology of the present invention, it is possible to make numerous modifications to the present invention without departing from its scope of protection. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. The utility model provides a cement grinding is with roller press planet reduction gears which characterized in that includes: the first box, first bearing, first high-speed axle, the second bearing, the high-speed axle of second, the third bearing, the fourth bearing, the second box, first planetary gear is vice, the vice second planetary gear, the output shaft, first bearing and second bearing of fixedly connected with on the first high-speed axle, fixedly connected with third bearing and fourth bearing on the high-speed axle of second, first high-speed axle with the high-speed axle parallel arrangement of second, first bearing and third bearing are installed in first box, and second bearing and fourth bearing are installed in the second box, and first box and second box pass through the bolt with the terminal surface position and link to each other.

2. The planetary reducing mechanism of the roller press for cement grinding of claim 1, wherein the distance between the axes of the first high speed shaft and the second high speed shaft is 350 ± 0.018mm to 450 ± 0.018 mm.

3. The planetary reduction mechanism of the roller press for cement grinding as claimed in claim 1, wherein the length of the first high-speed shaft is 250mm to 290mm, and the first high-speed shaft bearing is supported and fixed in an angular contact bearing and cylindrical roller bearing manner.

4. The planetary reduction mechanism of the roller press for cement grinding according to claim 1, wherein the diameter of the first high-speed shaft is 150 ± 0.02mm to 170 ± 0.02 mm.

5. The planetary reduction mechanism of the roller press for cement grinding according to claim 1, wherein the distance between the first high-speed shaft and the second box is 908mm to 928 mm.

6. The planetary reduction mechanism of the roller press for cement grinding as claimed in any one of claims 1 to 5, wherein the first high speed shaft is provided with bearings comprising one QJ236 and two NU236, respectively, and the second high speed shaft is provided with one bearing of 23048CC/W33 and one bearing of 24038CC/W33, respectively.

7. The planetary reduction mechanism of the roller press for cement grinding according to claim 6, wherein the first high-speed shaft is sealed by a labyrinth seal and oil return holes.

8. The planetary reduction mechanism of the roller press for cement grinding according to claim 6, wherein the first high-speed shaft end cover is detachable from top to bottom.

9. The planetary reduction mechanism of the roller press for cement grinding according to claim 6, wherein the first box body is in a thick-walled multi-turn form; the first box body is provided with an observation hole, and the gear condition on the second high-speed shaft in the first box body is observed through the observation hole.

10. The planetary reduction mechanism of the roller press for cement grinding according to claim 6, wherein the second high-speed shaft is supported by a self-aligning roller bearing.