WO2022141993A1

WO2022141993A1 - Vibrating screen drive for harvester

Info

Publication number: WO2022141993A1
Application number: PCT/CN2021/090091
Authority: WO
Inventors: 王军; 邢立成; 邹杨昊
Original assignee: 江苏沃得农业机械股份有限公司
Priority date: 2020-12-30
Filing date: 2021-04-27
Publication date: 2022-07-07
Also published as: CN112690097A

Abstract

A vibrating screen (H) drive for a harvester. The vibrating screen drive comprises two bearing seats (2g), a transmission shaft (3g), two eccentric bearings (4g) and a drive wheel (5g). The two bearing seats (2g) are respectively correspondingly fixed to side wall faces of two symmetrical supporting beams at a tail end of a rack, an outer spherical bearing is mounted in any bearing seat (2g), and two ends of the transmission shaft (3g) are fixed in the outer spherical bearing, respectively. The two eccentric bearings are respectively fixed at the two ends of the transmission shaft (3g) in a mirror image manner, one end of a vibrating screen is fixed on the two eccentric bearings (4g), the other end of the vibrating screen is arranged on the rack by means of a reciprocating guide structure, and the drive wheel (5g) is fixed at one end of the transmission shaft (3g) and is suitable for being driven by a driver of a harvester to drive the transmission shaft (3g) to rotate. The bearing seats (2g) are directly fixed on the supporting beams of the rack, transition connection is avoided, and the rack directly bears the gravity of the vibrating screen and an inertia acting force of reciprocating motion of the vibrating screen, such that vibration of the vibrating screen is more stable.

Description

A harvester vibrating screen drive

technical field

The present application relates to the technical field of drive devices, in particular to a drive of a harvester vibrating screen.

Background technique

In the prior art, the vibrating screen of the combine harvester is installed under the drum to screen crop grains, and the vibrating screen drive bearing seat is installed on the vibrating screen drive device mounting seat, and the mounting seat is a bending plate, and the bending plate is welded. It is fixed on the left and right side walls of the rear of the harvester frame. The bending plate has a mounting surface for the bearing seat to be installed. The mounting surface is punched with connecting holes. The bearing seat corresponds to the connecting hole and is fixed by fasteners such as bolts. on a bent plate.

After the frame is fully welded, there is deformation, which leads to an error in the parallelism between the left and right bending plates, which further affects the concentricity of the bearing housings on both sides. At the same time, the bearing seat is first fixed on the bending plate, and then fixed on the frame through the bending plate. The vibrating screen is constantly reciprocating during the operation, and the long-term, high-speed and large-feeding operation is only necessary. The vibrating screen supported by the bending plate with reciprocating vibration has poor stability and has potential safety hazards.

SUMMARY OF THE INVENTION

Therefore, the technical problem to be solved by the present application is to overcome the poor stability of the drive structure of the vibrating screen in the prior art and the potential safety hazard.

To this end, the present application proposes a harvester vibrating screen drive, comprising:

Two bearing seats are respectively fixed on the side walls of the two supporting beams symmetrically and vertically arranged at the rear end of the frame; an outer spherical bearing is installed in any of the bearing seats;

a transmission shaft, the two ends of which are respectively fixed in the outer spherical bearing;

Two eccentric bearings are respectively fixed on both ends of the transmission shaft in a mirror image;

One end of the vibrating screen is fixed on the two eccentric bearings, and the other end is set on the frame through the reciprocating guide structure;

The driving wheel, fixed on one end of the transmission shaft, is suitable for being driven by the driver of the harvester and driving the transmission shaft to rotate.

The reciprocating guide structure includes:

two track bearings, symmetrically arranged on both sides of the vibrating screen and one end away from the transmission shaft;

Two vibrating rails are symmetrically arranged on the racks on both sides of the vibrating screen; the guiding direction of the vibrating rails is arranged at an angle with the horizontal plane; the rail bearings are slidably arranged on the vibrating within the track.

It also includes a linkage connecting the vibrating screen and the eccentric bearing.

The linkage includes:

a ring sleeve, sleeved and fixed on the eccentric bearing;

One end of the linkage plate is fixed on the changing sleeve, and the other end is fixed on the vibrating screen.

One end of the ring sleeve is open and flanged; the flanging is perpendicular to the wall surface of the ring sleeve.

It also includes a protective plate, which is fixed on the support beam on one side of the driving wheel; the plate surface of the protective plate extends along the radial direction of the transmission shaft;

The area of the guard plate is larger than the cross-sectional area of the driving wheel.

The protective plate is arranged across the bearing seat and is arranged with a clearance from the bearing seat.

Also includes:

At least two counterweights, one of which is arranged on the driving wheel, and the other is arranged at the end of the transmission shaft away from the driving wheel.

The counterweight blocks at both ends of the transmission shaft are arranged asymmetrically.

A belt drive is adopted between the drive wheel and the driver.

The technical solution of the present application has the following advantages:

1. The harvester vibrating screen drive provided by this application includes two bearing seats, a transmission shaft, two eccentric bearings and a driving wheel. The two bearing seats are respectively fixed on the side walls of the two symmetrical support beams at the rear end of the frame, an outer spherical bearing is installed in any bearing seat, and the two ends of the transmission shaft are respectively fixed in the outer spherical bearing. Two eccentric bearings are fixed on both ends of the drive shaft in a mirror image, one end of the vibrating screen is fixed on the two eccentric bearings, the other end is set on the frame through a reciprocating guide structure, and the driving wheel is fixed on one end of the drive shaft, suitable for harvesting The drive of the machine drives and drives the transmission shaft to rotate. The bearing seat is directly fixed on the support beam of the frame to avoid transitional connection, and directly bear the gravity of the vibrating screen and the inertial force of its reciprocating motion through the frame, so that the vibration of the vibrating screen is more stable.

Description of drawings

In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the accompanying drawings required in the description of the specific embodiments or the prior art will be briefly introduced below. The drawings are some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

Fig. 1 is the structural representation one of the vibrating screen drive in the embodiment of the application;

Fig. 2 is the structural representation 2 of vibrating screen drive in the embodiment of the application;

3 is a schematic structural diagram of a track bearing on a vibrating screen in an embodiment of the application;

4 is a schematic structural diagram of a vibrating guide rail in an embodiment of the application;

FIG. 5 is a schematic structural diagram of a linkage member in an embodiment of the present application.

Description of reference numbers:

H, vibrating screen; 12b, support beam; 2g, bearing seat; 3g, drive shaft; 4g, eccentric bearing; 5g, driving wheel; 61g, track bearing; 62g, vibrating track; 7g, linkage; 71g, ring sleeve; 72g, linkage plate; 8g, counterweight; 9g, protective plate.

Detailed ways

The technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood in specific situations.

In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict with each other.

Example 1

This embodiment provides a harvester vibrating screen drive, as shown in FIG. 1 , including two bearing seats 2g, a transmission shaft 3g, two eccentric bearings 4g and a driving wheel 5g. The frame of the harvester is composed of a plurality of vertically arranged support beams 12b and an assembly beam erected between the support beams 12b. The frame shell is installed between the adjacent beams, and an installation cavity is formed in the shell, and the vibrating screen H is installed in the frame. inside the installation cavity.

As shown in FIG. 1 , two bearing seats 2g are respectively fixed on the side walls of the two symmetrical support beams 12b at the rear end of the frame. An outer spherical bearing is installed in any bearing seat 2g, and both ends of the transmission shaft 3g are respectively fixed on the outer side. in spherical bearings. Two eccentric bearings 4g are mirror images fixed on both ends of the transmission shaft 3g, one end of the vibrating screen H is fixed on the two eccentric bearings 4g, the other end is set on the frame through the reciprocating guide structure, and the driving wheel 5g is fixed on the transmission shaft 3g. One end is suitable for being driven by the driver of the harvester and driving the transmission shaft 3g to rotate. The bearing seat 2g is directly fixed on the support beam 12b of the frame to avoid transitional connection, and directly bear the gravity of the vibrating screen H and the inertial force of its reciprocating motion through the frame, so that the vibration of the vibrating screen H is more stable.

The reciprocating guide structure includes two orbital bearings 61g and a vibration orbit 62g corresponding to the two orbital bearings 61g. As shown in FIG. 3, the orbital bearings 61g are symmetrically fixed on both sides of the vibrating screen H and away from the end of the transmission shaft 3g. The rails 62g are symmetrically arranged on the racks on both sides of the vibrating screen H. As shown in FIG. 4 , the vibrating rails 62g are composed of a bottom plate and a side plate oppositely arranged on the bottom plate. A guide channel is formed between the two side plates. The guiding direction of 62g is arranged at an angle with the horizontal plane, and the track bearing 61g is slidably arranged in the vibration track 62g,

A linkage 7g is arranged between the vibrating screen H and the eccentric bearing 4g. As shown in Figure 5, the linkage 7g includes a ring sleeve 71g and a linkage plate 72g welded and fixed on the ring sleeve 71g. One end of the ring sleeve 71g is open and flanged. The flange is perpendicular to the wall surface of the ring sleeve 71g, and the ring sleeve 71g is sleeved and fixed on the eccentric bearing 4g. The other end of the linkage plate 72g is fixed on the side screen body of the vibrating screen H.

As shown in FIG. 1 or FIG. 2, the protective plate 9g is fixed on the support beam 12b close to the driving wheel 5g, and the plate surface of the protective plate 9g extends along the radial direction of the transmission shaft 3g. In this embodiment, the protective plate 9g is arranged across the On the bearing seat 2g, and the bearing seat 2g is provided with a gap. The area of the protective plate 9g is larger than the cross-sectional area of the driving wheel 5g, so as to fully block the crop straw and other debris screened out from the tail of the vibrating screen H, and prevent debris from entering the driving area on one side of the frame, causing entanglement or blocking, affecting normal operation of the machine.

As shown in Fig. 1 or Fig. 2, the detachable installation counterweight 8g on the driving wheel 5g, the end of the transmission shaft 3g away from the protective plate 9g is also provided with counterweight 8g, and the breeding block is detachably fixed on the connecting block. , the connecting block is fixed on the transmission shaft 3g, and the breeding blocks at both ends of the transmission shaft 3g are arranged asymmetrically. During the rotation of the transmission shaft 3g and the reciprocating motion of the vibrating screen H, the asymmetrically arranged counterweights 8g are used to avoid vibration. The reciprocating vibration of the screen H is too violent to ensure the balance of the overall vibration of the vibrating screen H.

In this embodiment, a belt drive is adopted between the driver of the harvester and the drive wheel 5g of the vibrating screen H, which may be a direct belt drive or an indirect belt drive, depending on the specific situation. Obviously, the above-mentioned embodiments are only examples for clear description, and are not intended to limit the implementation manner. For those of ordinary skill in the art, changes or modifications in other different forms can also be made on the basis of the above description. There is no need and cannot be exhaustive of all implementations here. However, the obvious changes or changes derived from this are still within the protection scope of the present application.

Claims

A harvester vibrating screen drive is characterized in that, comprising:

Two bearing seats (2g), respectively fixed on the side walls of the two supporting beams (12b) symmetrically and vertically arranged at the rear end of the frame, respectively; an outer spherical bearing is installed in any of the bearing seats (2g);

a transmission shaft (3g), the two ends of which are respectively fixed in the outer spherical bearing;

Two eccentric bearings (4g) are respectively fixed on both ends of the transmission shaft (3g) in a mirror image;

One end of the vibrating screen (H) is fixed on the two eccentric bearings (4g), and the other end is set on the frame through the reciprocating guide structure;

A driving wheel (5g), fixed on one end of the transmission shaft (3g), is suitable for being driven by the driver of the harvester and driving the transmission shaft (3g) to rotate.
The harvester vibrating screen drive according to claim 1, wherein the reciprocating guide structure comprises:

Two orbital bearings (61g), symmetrically arranged on both sides of the vibrating screen (H) and away from the end of the drive shaft (3g);

Two vibrating rails (62g) are symmetrically arranged on the racks on both sides of the vibrating screen (H); the guiding direction of the vibrating rails (62g) is arranged at an angle with the horizontal plane; the rail bearings (61g) One-to-one correspondence and slidably arranged in the vibration track (62g).
The harvester vibrating screen drive according to claim 1, further comprising a linkage (7g) connecting the vibrating screen (H) and the eccentric bearing (4g).
The harvester vibrating screen drive according to claim 3, wherein the linkage (7g) comprises:

A ring sleeve (71g), sleeved and fixed on the eccentric bearing (4g);

One end of the linkage plate (72g) is fixed on the changing sleeve, and the other end is fixed on the vibrating screen (H).
The harvester vibrating screen drive according to claim 4, characterized in that, one end of the ring sleeve (71g) is open and a flange is provided; the flange is perpendicular to the wall surface of the ring sleeve (71g).
The harvester vibrating screen drive according to claim 1, characterized in that it further comprises a protective plate (9g) fixed on the support beam (12b) on one side of the driving wheel (5g); the protective plate The plate surface of (9g) extends along the radial direction of the transmission shaft (3g);

The area of the protective plate (9g) is larger than the cross-sectional area of the driving wheel (5g).
The harvester vibrating screen drive according to claim 6, characterized in that, the protective plate (9g) is arranged across the bearing seat (2g), and is provided with a gap with the bearing seat (2g).
The harvester vibrating screen drive according to any one of claims 1 to 7, further comprising:

At least two counterweights (8g), one of which is arranged on the driving wheel (5g), and the other is arranged at the end of the transmission shaft (3g) away from the driving wheel (5g).
The harvester vibrating screen drive according to claim 8, characterized in that, the counterweight blocks (8g) at both ends of the transmission shaft (3g) are arranged asymmetrically.
The harvester vibrating screen drive according to claim 1, characterized in that, a belt drive is adopted between the drive wheel (5g) and the driver.