Series double-roller mill speed reducer

Abstract

The utility model discloses a tandem double-roller mill speed reducer which comprises a motor, the motor is in driving connection with a parallel shaft gear box, and the output end of the parallel shaft gear box is in driving connection with a distribution box gear box. An input shaft is arranged in the distribution box gearbox, the upper end of the input shaft is connected with a first output gear in a meshed mode, and the first output gear is connected with a first output shaft. The lower end of the input shaft is connected with an idle gear in a meshed mode, the idle gear is connected with a second output gear in a meshed mode, and the second output gear is connected with a second output shaft. The device is realized by adopting a structure that the motor, the parallel shaft gearbox and the distribution box gearbox are connected in series, and is convenient to mount; maintenance is convenient, and overall unboxing inspection is not needed; the cost of the series structure is lower; and the synchronism of the double output shafts is better.

Description

Technical Field

[0001] The utility model relates to the technical field of reducer structure, in particular to a series double-roller rolling mill reducer. Background Art

[0002] The prior art double-roll mill reducer generally adopts two R series helical gear reducers with two motor drives, or adopts two planetary gear reducers with two motor drives. Some manufacturers also use a dual-output shaft reducer with an integrated whole machine structure.

[0003] The first two solutions are driven by two reducers. The synchronization requirements of the two output shafts are relatively high, and generally require the use of synchronous motors to avoid slip. Since two motors are used to drive, the output torque of the two output shafts cannot achieve 100% 1:1 output.

[0004] The last type of integrated dual-output shaft reducer does not have the problem of slip rate, but the overall structure of the reducer will be more complicated, after-sales maintenance will be difficult, and the overall cost will be relatively high. Utility Model Content

[0005] The technical problem to be solved by the utility model is: in order to overcome the deficiencies in the prior art, a series double-roller rolling mill reducer is provided.

[0006] The technical solution adopted by the utility model to solve the technical problem is: a tandem double-roller mill reducer, comprising a motor, the motor drivingly connected to a parallel shaft gearbox, the output end of the parallel shaft gearbox drivingly connected to a distribution box gearbox;

[0007] An input shaft is arranged in the distribution box gear box, the upper end of the input shaft is meshedly connected with a first output gear, and the first output gear is connected with a first output shaft; the lower end of the input shaft is meshedly connected with an idler gear, and the idler gear is meshedly connected with a second output gear, and the second output gear is connected with a second output shaft.

[0008] By adopting the above technical solution, the input shaft of the distribution box gearbox transmits 50% of the power to the first output shaft and the second output shaft respectively, wherein the idler wheel functions to reverse the direction of rotation of the first output shaft and the second output shaft, forming a counter-rolling.

[0009] Furthermore, the parallel shaft gearbox described in the utility model is provided with a hollow output shaft, and the hollow output shaft and the input shaft of the distribution box gearbox are connected through a flat torque transmission; the hollow output shaft is connected to the parallel shaft through a transmission gear, and the parallel shaft is connected to the motor output end through a transmission gear.

[0010] Furthermore, the parallel shaft gearbox and the distribution box gearbox described in the utility model are connected in series via a connecting flange.

[0011] Furthermore, an encoder is installed at the tail of the motor described in the utility model;

[0012] By adopting the above technical solution, the speed of the reducer is monitored in real time, and then the frequency of the motor is changed by the inverter to obtain the desired speed.

[0013] The beneficial effects of the utility model are as follows: the utility model overcomes the defects in the structure of the traditional double-roll mill reducer in the prior art, and adopts a structure in which the motor, the parallel shaft gearbox and the distribution box gearbox are connected in series, which is easy to install and repair without the need to disassemble the whole box for inspection; the series structure has lower cost; and the synchronization of the dual output shafts is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Numbers in the figure: 1. Motor, 2. Parallel shaft gearbox, 3. Distribution box gearbox, 4. Input shaft, 5. First output gear, 6. First output shaft, 7. Idle gear, 8. Second output gear, 9. Second output shaft, 10. Hollow output shaft, 11. Connecting flange, 12. Encoder. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] like Figure 1A tandem double-roll mill reducer shown in the figure includes a motor 1, which is driven and connected to a parallel shaft gearbox 2, and the output end of the parallel shaft gearbox 2 is driven and connected to a distribution box gearbox 3; an input shaft 4 is arranged in the distribution box gearbox 3, and the upper end of the input shaft 4 is meshedly connected to a first output gear 5, and the first output gear 5 is connected to a first output shaft 6; the lower end of the input shaft 4 is meshedly connected to an idler gear 7, and the idler gear 7 is meshedly connected to a second output gear 8, and the second output gear 8 is connected to a second output shaft 9.

[0019] Among them, a hollow output shaft 10 is arranged in the parallel shaft gearbox 2, and the hollow output shaft 10 and the input shaft 4 of the distribution box gearbox 3 are connected through a parallel key torque transmission.

[0020] The parallel shaft gearbox 2 and the distribution box gearbox 3 are connected in series via a connecting flange 11. An encoder 12 is installed at the tail of the motor 1;

[0021] Working principle:

[0022] A motor drives the parallel shaft gearbox, and then the hollow shaft of the parallel shaft gearbox transmits the torque to the input shaft of the distribution box gearbox. The input shaft of the distribution box gearbox meshes with two gears at the same time, and transmits 50% of the power to the two output shafts (the first output shaft and the second output shaft). An idler wheel is added to one of the gear transmission chains so that the two output shafts rotate in opposite directions. An encoder is installed at the tail of the motor to monitor the speed of the reducer in real time. When the speed is too fast or too low, the frequency converter can be used to adjust the frequency to obtain the desired speed. Since one motor is used, the two output shafts can be 100% synchronized, and the torque distribution of the two output shafts can also be 1:1.

[0023] At the same time, the overall series structure is simpler, and installation and maintenance are more convenient.

[0024] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A tandem twin-roll mill reducer, characterized in that: It comprises a motor (1), wherein the motor (1) is drivingly connected to a parallel-axis gearbox (2), and the output end of the parallel-axis gearbox (2) is drivingly connected to a distribution box gearbox (3); The distribution box gearbox (3) is provided with an input shaft (4), the upper end of the input shaft (4) is meshedly connected with a first output gear (5), and the first output gear (5) is connected to a first output shaft (6); the lower end of the input shaft (4) is meshedly connected with an idler gear (7), the idler gear (7) is meshedly connected with a second output gear (8), and the second output gear (8) is connected to a second output shaft (9).

2. A tandem twin-roll mill reducer as claimed in claim 1, characterized in that: The parallel shaft gearbox (2) is provided with a hollow output shaft (10), and the hollow output shaft (10) and the input shaft (4) of the distribution box gearbox (3) are connected via a parallel key torque transmission.

3. A tandem twin-roll mill reducer as claimed in claim 1, characterized in that: The parallel shaft gearbox (2) and the distribution box gearbox (3) are connected in series via a connecting flange (11).

4. A tandem twin-roll mill reducer as claimed in claim 1, characterized in that: An encoder (12) is installed at the tail of the motor (1).

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