A drive device for a vertical speed reducer

Abstract

The utility model discloses a vertical speed reducer's drive arrangement, including casing, disc type pressing plate, pivot, disc type pressing plate vertical axle's axis rotatablely supported on the casing, be provided with pivot in the casing, and the pivot upper end is connected with disc type pressing plate center, and the outside arrangement of casing is a plurality of motor, and motor has with disc type pressing plate rotation axis parallel extension and radial's offset rotor rotation axis, the big gear wheel is sleeved on the pivot, and the pinion of motor output shaft connection is engaged with the big gear wheel on the pivot, and the support end cover is provided in the casing, and the upper bearing on the pivot sets up in the support end cover, and the lower bearing on the pivot sets up in the bearing support, and the casing is composed of upper box and lower box, and the upper box and lower box are connected through flange screw, and the pinion tooth of the pivot on motor installation drives disc type pressing plate rotation big gear synchronous belt, and the big gear wheel maximizes diameter, and then promotes pinion and big gear speed reduction ratio increase, and input shaft torque reduces, and permanent magnet motor manufacturing cost drops.

Description

Technical Field

[0001] This utility model relates to the field of vertical reducer drive technology, specifically a drive device for a vertical reducer. Background Technology

[0002] Vertical speed reducers can be widely used in speed reduction mechanisms in various transmission machinery, such as environmental protection machinery in mining, metallurgy, petrochemical, pharmaceutical, and food industries. Chinese Patent Application No. 201510348081.9 discloses a drive device for a vertical speed reducer. This prior art is used for the drive arrangement of a vertical rolling mill, including: a housing; a disc-type pressure plate rotatably supported on the housing, rotatable about the vertical pressure plate axis and forming the output of the drive arrangement; a gear assembly arranged in the housing below the pressure plate and rotatably driven connected to the pressure plate; and multiple electric motors arranged in the housing below the gear assembly, wherein the spur gear set includes... The device includes two spur gears that are rotatably fixed to the pressure plate. The shafts of each electric motor, which are distributed to a first end via a first drive gear, are rotatably driven connected to the first spur gear. The second end of the shaft of each electric motor is rotatably driven connected to a second spur gear of the spur gear set via a second drive gear distributed to the second end. The electric motor is rotatably driven connected to the spur gear set via a counter-rotating helical gear drive. Therefore, the torque provided by the electric motor can be advantageously introduced into the spur gear set while maintaining load balance on the electric motor without the use of axial bearings for the electric motor, thus ensuring a simple construction of the drive arrangement.

[0003] The disclosed drive device for a vertical reducer has the following drawbacks: 1. The motor is housed within the casing, limiting its capacity and restricting manufacturing space for large-capacity vertical mill reducers; 2. The diameter of the large gear cannot be maximized, resulting in a small gear ratio that increases the motor's manufacturing cost; 3. The positioning bearing is positioned too low, causing vibration in vertical mill reducers subjected to excessive radial forces; 4. The motor's placement within the casing makes adjusting gear clearance, motor installation, and subsequent motor maintenance extremely inconvenient. Therefore, a drive device for a vertical reducer is proposed to address these issues. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a drive device for a vertical reducer, which moves the machine out of the housing, maximizes the gear diameter, increases the reduction ratio of the large and small gears, and reduces the manufacturing cost of the motor, thus effectively solving the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a drive device for a vertical reducer, comprising a housing, a disc-type pressure plate, and a rotating shaft. The vertical axis of the disc-type pressure plate is rotatably supported on the housing. A rotating shaft is disposed within the housing, with its upper end connected to the center of the disc-type pressure plate. Several motors are arranged on the outer side of the housing. Each motor has an extension parallel to the rotation axis of the disc-type pressure plate and radially offset from the rotation axis of the rotor. A large gear is mounted on the rotating shaft, and a small gear connected to the output shaft of the motor meshes with the large gear on the rotating shaft. A support end cover is disposed within the housing, with an upper bearing on the rotating shaft disposed within the support end cover and a lower bearing on the rotating shaft disposed within a bearing bracket.

[0006] Furthermore, the housing consists of an upper box and a lower box, which are connected by flange bolts. The support end cover is thickened and circumferentially enlarged to connect with the upper box. A thrust bearing is provided between the support end cover and the disc pressure plate.

[0007] Furthermore, the large gear is designed as a single-stage spur gear set, and the small gear mounted on the motor shaft on the side of the single-stage spur gear set drives the single-stage spur gear set to rotate in the opposite direction.

[0008] Furthermore, the disc pressure plate is connected to the rotating shaft through several pins to achieve force transmission, and the disc pressure plate is screwed to the screw hole at the shaft end of the rotating shaft.

[0009] Furthermore, a rectangular flange is provided on the motor, and the motor is mounted on the lower housing through the rectangular flange.

[0010] Furthermore, a bearing bracket is provided at the center of the bottom of the lower housing, the lower bearing is mounted on the bearing bracket, and foot holes are provided at the four corners of the bottom of the lower housing.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. The small gear mounted on the motor shaft drives the large gear to rotate the disc pressure plate synchronously. The diameter of the large gear is maximized, which in turn increases the reduction ratio between the small gear and the large gear, reduces the input shaft torque, and lowers the manufacturing cost of the permanent magnet motor.

[0013] 2. The small gears arranged on the outside of the housing jointly drive the single-stage spur gear set. The single-stage spur gear set bears a large torque, has balanced gear dynamics, and the grinding disc does not vibrate.

[0014] 3. The upper housing can be lifted out for inspection and maintenance of the large gear and bearings. The disc pressure plate can be lifted out for inspection and maintenance of the thrust bearing. This structure makes inspection and maintenance convenient and improves work efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2This is a top view of the lower housing structure of this utility model.

[0017] In the diagram: 1 Bearing bracket, 2 Lower bearing, 3 Lower housing, 4 Motor, 5 Pinion, 6 Support end cover, 7 Disc pressure plate, 8 Upper bearing, 9 Shaft, 10 Large gear, 11 Thrust bearing shell, 12 Upper housing, 13 Pin, 14 Anchor hole, 15 Rectangular flange. Detailed Implementation

[0018] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] Please see Figure 1-2 This utility model provides a technical solution: a drive device for a vertical reducer, including a housing, a disc-type pressure plate 7, and a rotating shaft 9. The vertical axis of the disc-type pressure plate 7 is rotatably supported on the housing, and the disc-type pressure plate 7 forms the output of the drive device. The rotating shaft 9 is provided in the housing, and the upper end of the rotating shaft 9 is connected to the center of the disc-type pressure plate 7. Several motors 4 are arranged on the outside of the housing. The motors 4 have an extended rotor rotation axis that is parallel to the rotation axis of the disc-type pressure plate 7 and radially offset. A large gear 10 is mounted on the rotating shaft 9. A small gear 5 connected to the output shaft of the motor 4 meshes with the large gear 10 on the rotating shaft 9. A support end cover 6 is provided in the housing. The upper bearing 8 on the rotating shaft 9 is located in the support end cover 6, and the lower bearing 2 on the rotating shaft 9 is located in the bearing bracket 1. The small gear 5 mounted on the shaft of the motor 4 drives the large gear 10 to rotate the disc-type pressure plate 7 synchronously. The diameter of the large gear 10 is maximized, thereby increasing the reduction ratio between the small gear 5 and the large gear 10, reducing the input shaft torque, and lowering the manufacturing cost of the permanent magnet motor.

[0020] The housing consists of an upper housing 12 and a lower housing 3, which are connected by flange bolts. The support end cover 6 is thickened and circumferentially enlarged to connect with the upper housing 12. A thrust bearing 11 is provided between the support end cover 6 and the disc pressure plate 7, which strengthens the support strength of the support end cover 6. The enlargement of the support end cover 6 facilitates the installation of the largest diameter gear 10 inside the housing. The increased reduction ratio between the large diameter gear 10 and the small gear 5 reduces the input shaft torque and lowers the manufacturing cost of the permanent magnet motor. Specifically, the flange of the circumferentially enlarged support end cover 6 extending out of the outer periphery of the upper housing 12 is bolted to the flange at the top of the lower housing 3 extending out of the housing, jointly supporting all the weight from the vertical mill reducer. When inspecting the large gear 10, small gear 5, and bearings, it is necessary to loosen the bolts on the outer periphery flange of the vertical mill reducer housing, lift out the upper housing 12, and the large gear 10 is also lifted out for maintenance.

[0021] The large gear 10 is designed as a single-stage spur gear set. The small gear 5 mounted on the motor 4 shaft on the side of the single-stage spur gear set is driven by the single-stage spur gear set rotating in the opposite direction. The small gear 5 arranged on the outside of the housing jointly drives the single-stage spur gear set. The single-stage spur gear set bears a large torque, has balanced gear dynamics, and the grinding disc does not vibrate.

[0022] The disc-type pressure plate 7 is connected to the rotating shaft 9 through several pins 13 to realize the transmission of force. The disc-type pressure plate 7 is screwed to the screw hole at the shaft end of the rotating shaft 9. The rotating shaft 9 on the large gear 10 is hoisted by the screw connection, which eliminates the need to repeatedly set up a secondary thrust bearing device below the large gear 10. Several axial transmission pins 13 transmit torque and separate. The thrust bearing 11 can be inspected by lifting out the disc-type pressure plate 7, and the large gear 10 and bearings can be inspected by lifting out the upper housing 12.

[0023] The motor 4 is equipped with a rectangular flange 15. The motor 4 is installed on the lower housing 3 through the rectangular flange 15. Specifically, the motor 4 is screwed to the open flange bracket at the upper end of the lower housing 3 through the radially adjustable through hole on the rectangular flange 15. After adjusting the gap between the pinion 5 and the gear 10, the motor 4 is fixed.

[0024] A bearing bracket 1 is provided at the center of the bottom of the lower housing 3, and the lower bearing 2 is provided on the bearing bracket 1. Foot holes 14 are provided at the four corners of the bottom of the lower housing 3.

[0025] The number of motors used in the drive arrangement is one, two, or three, and the gear oil is collected in a suitable collection container.

[0026] A circular oil baffle is provided on the outer periphery of the upper housing 12. A dust-proof sealing labyrinth is provided at the upper end of the oil baffle and the lower end of the disc pressure plate 7. Anchor holes 14 are provided at the four corners of the base of the lower housing 3. Screws are screwed into the screw holes on the foundation through the anchor holes 14. The motor 4 adopts a low-torque permanent magnet motor. In order to maximize the power of the permanent magnet motor, the bearing is designed to be assembled inside the motor, which does not occupy the axial space of the motor 4. The motor 4 is equipped with a thrust bearing for axial load bearing.

[0027] The foregoing has shown and described the basic principles, main features and advantages of this utility model. Various changes and modifications may be made to this utility model without departing from the spirit and scope thereof, and all such changes and modifications fall within the scope of this utility model as claimed.

Claims

1. A drive device for a vertical reducer, comprising a housing, a disc-type pressure plate (7), and a rotating shaft (9), characterized in that: The vertical axis of the disc pressure plate (7) is rotatably supported on the housing. A rotating shaft (9) is provided in the housing. The upper end of the rotating shaft (9) is connected to the center of the disc pressure plate (7). Several motors (4) are arranged on the outside of the housing. The motors (4) have a rotor rotation axis that is parallel to the rotation axis of the disc pressure plate (7) and radially offset. A large gear (10) is mounted on the rotating shaft (9). The small gear (5) connected to the output shaft of the motor (4) meshes with the large gear (10) on the rotating shaft (9). A support end cover (6) is provided in the housing. The upper bearing (8) on the rotating shaft (9) is located inside the support end cover (6). The lower bearing (2) on the rotating shaft (9) is located inside the bearing bracket (1).

2. The driving device for a vertical reducer according to claim 1, characterized in that: The housing consists of an upper box (12) and a lower box (3). The upper box (12) and the lower box (3) are connected by flange bolts. The support end cover (6) is thickened and circumferentially enlarged to connect with the upper box (12). A thrust bearing (11) is provided between the support end cover (6) and the disc pressure plate (7).

3. The driving device for a vertical reducer according to claim 1, characterized in that: The large gear (10) is designed as a single-stage spur gear set, and the small gear (5) mounted on the shaft of the motor (4) on the side of the single-stage spur gear set is driven by rotating in the opposite direction with the single-stage spur gear set.

4. The driving device for a vertical reducer according to claim 1, characterized in that: The disc pressure plate (7) is connected to the rotating shaft (9) through several pins (13), and the disc pressure plate (7) is screwed to the screw hole at the shaft end of the rotating shaft (9).

5. The driving device for a vertical reducer according to claim 1, characterized in that: A rectangular flange (15) is provided on the motor (4), and the motor (4) is installed on the lower housing (3) through the rectangular flange (15).

6. The driving device for a vertical reducer according to claim 2, characterized in that: A bearing bracket (1) is provided at the bottom center of the lower housing (3), and the lower bearing (2) is provided on the bearing bracket (1). Foot holes (14) are provided at the four corners of the bottom of the lower housing (3).

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