CN102562954A - Transmission of tube mill - Google Patents

Abstract

The invention discloses a transmission device of a tube mill, wherein an input shaft (15) is arranged on a torsion frame (13), and an input gear (14) on the input shaft (15) is meshed with an input mating gear (17); a flexible hollow shaft (16) is arranged in the center of the connecting box body (3), an input mating gear (17) and a second-stage sun gear (5) are arranged on the flexible hollow shaft (16), a second-stage planet gear (6) on a second-stage planet gear shaft (7) is meshed with the second-stage sun gear (5), and a second-stage inner gear ring (4) is arranged on the connecting box body (3); the second-stage planetary gear shaft (7) is connected with a third-stage sun gear (8), a third-stage planetary gear shaft (9) is mounted on a third-stage planetary gear carrier (10) on the torque frame (13), a third-stage planetary gear (11) on the third-stage planetary gear shaft (9) is meshed with the third-stage sun gear (8), and a third-stage inner gear ring (12) is connected on the connecting box body (3). The invention has a totally-enclosed structure, adopts flange connection, and has simple installation and short installation period.

Description

Transmission of tube mill

technical field

The invention relates to a transmission device, in particular to a transmission device of a tube mill.

Background technique

As we all know, in the dry process cement production line, the transmission device of the tube mill mainly includes center transmission and edge transmission. The edge transmission has the characteristics of compact layout and low price, but the transmission efficiency is low, the maintenance workload is large, and the operation failure rate is high. The central transmission has the advantages of high transmission efficiency, safety and reliability, and is favored by users. However, the reducer is large in size and expensive. At present, the central transmission reducer with a transmission power of more than 4500kW does not have the processing and manufacturing capabilities and needs to be imported from abroad. In the past two decades, with the continuous progress of cement production technology, the level of cement industry technology and equipment has also been improved, and the scale of cement production equipment has also become larger and larger. Manufacturers at home and abroad are working hard on the reducer as a supporting tube mill. Continuous innovation in materials, heat treatment and structural forms.

Contents of the invention

The object of the present invention is to provide a transmission device for a tube mill,

It is suitable for the use of tube mills in the cement production line of the building materials industry. The fully enclosed and compact structure adopts flange direct connection, which makes the on-site installation easier. The installation work is only the adjustment of the coaxiality of the input shaft hydraulic coupler, and the installation period is short. , high transmission efficiency, safe and reliable.

In order to achieve the above object, the technical solution of the present invention is: the transmission device is a first-level parallel gear reduction + a second-level planetary gear reduction; The input mating gear completes the first-stage parallel gear reduction; a flexible hollow shaft is installed in the center of the connecting box, the input mating gear and the flexible hollow shaft are connected by splines, and the flexible hollow shaft is rigidly combined with the second-stage sun gear. Together, the second-stage sun gear meshes with the second-stage planetary gear on the second-stage planetary shaft, and the second-stage inner ring gear is installed between the coupling box and the flange of the reducer box, and the second-stage planetary gear drives the second stage The inner ring gear completes the second-stage planetary gear reduction; the second-stage planetary shaft is rigidly connected to the third-stage sun gear, the third-stage planet carrier is installed on the torque frame, the third-stage planetary shaft is installed on the third-stage planet carrier, and the third-stage planetary shaft is installed on the third-stage planetary carrier. The third-stage planetary gear on the third-stage planetary shaft meshes with the third-stage sun gear, and the connecting box is rigidly connected with the third-stage internal ring gear, and the third-stage planetary gear drives the third-stage internal ring gear to complete the third-stage planetary gear reduction .

Among them, the input mating gear and the flexible hollow shaft are connected by means of internal teeth + drum-shaped external teeth.

Among them, the third-stage planet carrier and the torsion frame are rigidly connected by splines, and the whole is stationary relative to the ground, and the second-stage sun gear and the flexible hollow shaft are separate structures.

Among them, the rotation speed of the second-stage internal gear and the third-stage internal gear and the flange of the mill cylinder are equal in magnitude and in the same direction.

During installation, the second-stage internal ring gear is directly connected to the flange of the mill shell through the casing flange, and the shaft of the main motor is connected to the input shaft through a hydraulic coupling; during transmission, the input gear and the input matching gear complete the second stage. The first-stage parallel gear reduction; the second-stage planetary gear drives the second-stage internal ring gear to complete the second-stage planetary gear reduction; the third-stage planetary gear drives the third-stage internal ring gear to complete the third-stage planetary gear reduction.

The present invention has the following advantages:

1. The present invention is a three-stage transmission device, which includes two-stage planetary gear transmission with a power range of 800-7100kW. The shaft of the main motor is connected with the input shaft through a hydraulic coupling to realize the input of the transmission torque of the reducer. The input gear and Input the matching gear to complete the first stage deceleration, the second stage planetary gear drives the second stage internal ring gear to complete the second stage deceleration, the third stage planetary gear drives the third stage internal ring gear to complete the third stage deceleration, and the second stage internal The rotation speed of the ring gear is the same as that of the third-stage inner ring gear, so that the transmitted torque is finally transmitted from the connecting box to the flange of the mill cylinder.

2. The third-stage planetary frame is supported on the civil foundation through the torque frame. The third-stage planetary frame and the torque frame are stationary as counter-moment supports, and all other components are rotating.

3. The transmission device adopts flange connection, which makes the on-site installation easier. The installation work is only the adjustment of the coaxiality of the input shaft hydraulic coupler, which shortens the installation period.

4. The transmission device can not only be connected with the mill cylinder with hollow shaft, but also can be directly connected with the mill with sliding shoe bearings.

5. The torsion frame of the transmission device can absorb the vibration, angular deviation and displacement generated during the operation of the mill, without any influence on the gears and bearings, with greater bearing capacity and high system operation reliability.

6. The flange of the box body and the flange of the mill barrel are directly connected, and the torsion shaft is eliminated, which not only reduces the weight of the whole equipment, but also makes the process layout more compact and reduces the civil construction investment of the plant construction.

7. Fully enclosed and compact structure, light weight, low energy consumption, less land occupation, simple foundation, less infrastructure investment, can be hung on the mill as a whole, under the same transmission power condition, the weight is only that of the central drive reducer Half.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

In the figure: 1 mill barrel flange, 2 box flange, 3 connecting box, 4 second-stage internal ring gear, 5 second-stage sun gear, 6 second-stage planetary gear, 7 second-stage planetary gear shaft , 8 third-stage sun gear, 9 third-stage planetary shaft, 10 third-stage planet carrier, 11 third-stage planetary gear, 12 third-stage ring gear, 13 torque frame, 14 input gear, 15 input shaft, 16 Flexible hollow shaft, 17 input mating gears.

Detailed ways

As shown in Figure 1, the transmission device is a first-stage parallel gear reduction + a second-stage planetary gear reduction; the input shaft 15 is installed on the torque frame 13, and the input gear 14 on the input shaft 15 meshes with the input matching gear 17, and the input gear 14 and the input The mating gear 17 completes the first-stage parallel gear reduction; a flexible hollow shaft 16 is installed in the center of the connecting box 3, the input mating gear 17 and the flexible hollow shaft 16 are connected by splines, and the flexible hollow shaft 16 is connected to the second-stage sun The wheels 5 are rigidly combined, the second-stage planetary gear 6 on the second-stage planetary shaft 7 meshes with the second-stage sun gear 5, and the second-stage internal ring gear is installed between the coupling box 3 and the reducer box flange 2 4. The second-stage planetary gear 6 drives the second-stage ring gear 4 to complete the second-stage planetary gear reduction; the second-stage planetary gear shaft 7 is rigidly connected to the third-stage sun gear 8, and the third-stage planet carrier 10 is installed on the torque frame 13 Above, the third-stage planetary shaft 9 is installed on the third-stage planet carrier 10, the third-stage planetary gear 11 on the third-stage planetary shaft 9 meshes with the third-stage sun gear 8, and the connection box 3 is rigidly connected to the third-stage Ring gear 12, the third-stage planetary gear 11 drives the third-stage ring gear 12 to complete the third-stage planetary gear reduction.

Wherein, the input mating gear 17 and the flexible hollow shaft 16 are connected by means of internal teeth + drum-shaped external teeth.

Wherein, the third-stage planetary carrier 10 and the torsion frame 13 are rigidly connected by splines, and the whole is stationary relative to the ground, and the second-stage sun gear 5 and the flexible hollow shaft 16 are separate structures.

Wherein, the rotation speed of the second-stage ring gear 4 is equal to that of the third-stage ring gear 11 and the shell flange 1 of the mill, and the direction is the same.

During installation, the second-stage internal ring gear 4 is directly connected to the mill cylinder flange 1 through the casing flange 2, and the shaft of the main motor is connected to the input shaft 15 through a hydraulic coupling; during transmission, the input gear 14 and the Input matching gear 17 to complete the first-stage parallel gear reduction; the second-stage planetary gear 6 drives the second-stage internal ring gear 4 to complete the second-stage planetary gear reduction; the third-stage planetary gear 11 drives the third-stage internal ring gear 12 to complete the second-stage planetary gear reduction Three-stage planetary gear reduction.

Claims (4)

1. The transmission device of the tube mill is characterized in that: the transmission device is a first-level parallel gear reduction + a second-level planetary gear reduction; the input shaft (15) is installed on the torque frame (13), and the input shaft (15) The gear (14) meshes with the input mating gear (17), and the input gear (14) and the input mating gear (17) complete the first-stage parallel gear reduction; a flexible hollow shaft (16) is installed in the center of the connecting box (3), The input mating gear (17) is connected with the flexible hollow shaft (16) through a spline, the flexible hollow shaft (16) is rigidly combined with the second-stage sun gear (5), and the second-stage planetary gear shaft (7) The second-stage planetary gear (6) meshes with the second-stage sun gear (5), and the second-stage internal ring gear (4) is installed between the connection box (3) and the reducer box flange (2), and the second-stage The planetary gear (6) drives the second-stage ring gear (4) to complete the second-stage planetary gear reduction; the second-stage planetary gear shaft (7) is rigidly connected to the third-stage sun gear (8), and the third-stage planet carrier (10) Installed on the torque frame (13), the third-stage planetary shaft (9) is installed on the third-stage planet carrier (10), and the third-stage planetary gear (11) on the third-stage planetary shaft (9) meshes with the third The third-stage sun gear (8) is rigidly connected to the third-stage ring gear (12) on the connecting box (3), and the third-stage planetary gear (11) drives the third-stage ring gear (12) to complete the third-stage planetary gear slow down. 2. The transmission device of the tube mill according to claim 1, characterized in that: the input mating gear (17) and the flexible hollow shaft (16) are connected by internal teeth + drum-shaped external teeth. 3. The transmission device of the tube mill according to claim 1, characterized in that: the planet carrier (10) and the torque frame (13) are rigidly connected by splines, the whole is stationary relative to the ground, and the second-stage sun gear (5) and the flexible hollow shaft (16) are split structures. 4. The transmission device of the tube mill according to claim 1, characterized in that: the second-stage internal ring gear (4) and the third-stage internal ring gear (11) of the transmission device and the mill cylinder flange ( 1) The rotational speeds are equal in magnitude and in the same direction.

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