CN202683615U - Main drive reducer for vertical roll of hot continuous rolling mill - Google Patents

Abstract

The utility model discloses a vertical roller main drive reducer of a hot continuous rolling mill, which is characterized in that: a box body (4) and a box cover (13) are fixedly connected by studs (5), nuts (14) and positioning pins (9) The chassis is composed, and the left and right sets of reducers are installed in the chassis. The utility model is composed of double-input and double-output single-stage gears, and meets the working condition requirements of compact, continuous, heavy-load, variable-speed, and strong-impact working conditions of the vertical roller main drive device of hot continuous rolling mills in the metallurgical industry.

Description

Main drive reducer for vertical roll of hot continuous rolling mill

technical field

The utility model relates to the technical field of steel rolling machinery and equipment, in particular to a vertical roller main drive reducer of a hot continuous rolling mill.

Background technique

As we all know, in the field of non-ferrous metal rolling machinery hot rolling mills, two output shafts are generally driven by one motor at the same time; and large-scale vertical roll mill reducers have mainly relied on imports for many years due to their complex structure and high manufacturing precision. With the continuous enhancement of domestic machining capabilities in the past ten years, product quality and precision have improved a lot; at the same time, as the specifications of continuous rolling mills have become larger and larger, it is necessary to increase the power of the motor and the size of the reducer.

The main transmission reducer of the vertical roll of the hot continuous rolling mill requires stable transmission, which belongs to heavy-duty continuous work, and there are variable loads, variable speeds, and strong impacts during the work, so the reducer must have high strength, long life and high reliability. .

Therefore, it has become an urgent requirement for gearbox manufacturing enterprises to design and manufacture a new type of gear box that can meet the requirements of use and utilize a compact space to reduce the cost of the main drive reducer.

Contents of the invention

The purpose of the utility model is to provide a vertical roller main drive reducer for a hot continuous rolling mill, which can meet the requirements of continuous, heavy load, variable speed, strong impact and compact structure of the vertical roll main drive in the metallurgical industry.

In order to achieve the above purpose, the utility model provides the following technical solutions: the box body and the box cover are fixedly connected by studs, nuts and positioning pins to form a chassis, and two groups of reducers are installed in the casing, and each group of reducers includes input gear shafts, Input mating gears, double-row tapered roller bearings, short cylindrical roller bearings, tapered roller bearings and eccentric sleeves, one end of the input gear shaft is installed with a double-row tapered roller bearing, and the other end is installed with short cylindrical roller bearings. Only the two ends of the input gear shaft are respectively installed in the bearing hole of the chassis through eccentric sleeves, and the shaft ends of each input gear shaft are respectively connected with the drum-shaped gear coupling through a key, and the motor connection plate is installed on the drum-shaped gear coupling. Connect the motor on the motor connection plate, and the two ends of the two input mating gears are supported by tapered roller bearings and fixedly installed in the bearing holes of the chassis through eccentric sleeves. The input mating gears are assembled together through the interference of the wheel flange and the hub by reaming bolts Put together, and the size of the two input mating gears is equal, the helix angle is equal but the direction of rotation is opposite, the input mating gear meshes with the input gear shaft to transmit the output torque, and the input mating gear of the left reducer meshes with the input mating gear of the right reducer , Realize the transmission mode of double input and double output.

The utility model has the following advantages:

1. The reducer is composed of double-input and double-output single-stage transmission. It has a compact structure, and the chassis is divided into two parts: the box cover and the box body. It has good manufacturability, is convenient for processing, and is convenient for grinding teeth during assembly, effectively ensuring the tooth surface contact Efficient, especially easy to assemble and disassemble.

2. The hub and shaft of the output gear of the reducer are integrated and hollow. The connecting shaft can be retracted into the gear under the action of the hydraulic cylinder, so that the extension length of the connecting shaft is shortened and the height of the rolling mill is reduced.

3. The gear reducer adjusts the contact spots of the gears through the eccentric sleeve, which can effectively compensate the processing error of the chassis through the eccentric sleeve to ensure good contact spots of the gears.

4. The arrangement of the motor is located below the reducer, and the handle is connected to the motor connection plate. The arrangement of the motor below can increase the stability of the transmission system, and can also simplify the upper structure of the reducer for easy maintenance.

5. The output gear is assembled, and the wheel rim and the wheel hub are assembled together with an interference fit and connected by reaming bolts, which greatly reduces the manufacturing cost of the reducer.

6. The main drive reducer of the vertical roller adopts thin oil forced lubrication, and the thin oil station centrally supplies oil, and realizes the lubrication of the bearing and the meshing point of the gear through the oil inlet cover. The tank and the oil return end cover return oil at the same time, and finally realize sufficient oil supply and reliable oil return.

Description of drawings

Fig. 1 is the outline drawing of the utility model.

Fig. 2 is a structural schematic diagram of the utility model.

In the figure: 1 motor connection plate, 2 drum-shaped gear coupling, 3 key, 4 box, 5 stud, 6 double-row tapered roller bearing, 7 short cylindrical roller bearing, 8 eccentric sleeve, 9 positioning pin, 10 Tapered roller bearings, 11 input gear shafts, 12 input mating gears, 13 case covers, 14 nuts.

Detailed ways

As shown in Figure 1-2, the box body 4 and the box cover 13 are fixedly connected by studs 5, nuts 14, and positioning pins 9 to form a chassis. Two sets of reducers are installed in the box. Each set of reducers includes an input gear shaft 11, Input matching gear 12, double-row tapered roller bearing 6, short cylindrical roller bearing 7, tapered roller bearing 10 and eccentric sleeve 8, one end of input gear shaft 11 is equipped with a double-row tapered roller bearing 6, input gear shaft The other end of 11 is installed with a short cylindrical roller bearing 7, and the two ends of the two input gear shafts 11 are respectively installed in the bearing holes of the chassis through the eccentric sleeve 8, and the shaft end of one of the input gear shafts is connected with the drum gear through the key 3. The shaft device 2 is connected, and the drum-shaped gear coupling 2 is installed with the motor connection plate 1, and the motor connection plate 1 is connected to the motor. The two ends of the two input mating gears 12 are supported by tapered roller bearings 10 and fixed on the chassis through eccentric sleeves. In the bearing hole, the input mating gear 12 is fitted together through the interference of the wheel rim and the hub, and is connected by reaming bolts, and the two input mating gears are equal in size and helix angle but opposite in direction of rotation. The input mating gear 12 and the input The gear shaft 11 meshes to transmit the output torque, and the input mating gear of the left speed reducer meshes with the input mating gear of the right speed reducer at the same time, realizing the transmission mode of double input and double output.

Claims (1)

1. hot continuous rolling unit edger roll main transmission reductor, it is characterized in that: casing (4) and case lid (13) are by double-screw bolt (5), nut (14), alignment pin (9) cabinet that is composed of a fixed connection, two groups of decelerators about installing in the cabinet, every group of decelerator comprises input gear axle (11), input coupling gear (12), double-row conical bearing (6), cylindrical roller bearing (7), taper roll bearing (10) and eccentric bushing (8), one end of input gear axle (11) is installed a double-row conical bearing (6), the other end of input gear axle (11) is installed cylindrical roller bearing (7), the two ends of two input gear axles (11) are installed in the dead eye of cabinet by eccentric bushing (8) respectively, wherein the axle head of an input gear axle connects with crown gear coupling (2) by key (3), the upper mounted motor of crown gear coupling (2) connects dish (1), it is upper closing motor that motor connects dish (1), the two ends of two input coupling gears (12) are supported by taper roll bearing (10) and are fixedly mounted in the dead eye of cabinet by eccentric bushing, input coupling gear (12) is assembled together by fitting bolt closing by wheel rim and wheel hub interference, and the size of two input coupling gears equates, helical angle equates but rotation direction is opposite, input coupling gear (12) transmits output torque with input gear axle (11) engagement, the input coupling gear of left decelerator meshes the input coupling gear of right decelerator simultaneously, realizes dual input, the kind of drive of dual output.

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