Vibrating plate actuator for harvester
The vibrating plate actuator for combine harvesters stabilizes the vibrating plate by using bearing seats and a reciprocating guide structure with balancing weights, addressing instability and safety concerns through direct frame support.
Patent Information
- Authority / Receiving Office
- IR · IR
- Patent Type
- Patents
- Current Assignee / Owner
- JIANGSU WORLD AGRI MACHINERY
- Filing Date
- 2022-01-01
- Publication Date
- 2025-07-28
AI Technical Summary
The existing vibrating plate actuators in combine harvesters suffer from poor stability and potential safety hazards due to frame deformation and mismatched bearing seats, leading to instability during high-speed reciprocation.
The vibrating plate actuator design features two bearing seats on the frame's support legs with outer spherical bearings, a transmission shaft with eccentric bearings, a reciprocating guide structure, and balancing weights to stabilize the vibrating plate, ensuring direct frame support and balanced motion.
The design enhances the stability and safety of the vibrating plate actuator by directly bearing the gravity and inertial forces on the frame, preventing translational connection issues and maintaining balanced vibration.
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Abstract
Description
Vibrating plate actuator for harvester Technical background This invention relates to the technical field of actuators and, in particular, to a vibrating plate actuator for a harvester. Background In the prior art, the vibrating plate of the combine harvester is installed under the drum and is used to screen the grain of the crop. The bearing seat of the vibrating plate drive is installed on the mounting position of the vibrating plate drive device, and the mounting position is a bending plate fixed by welding on the left and right end walls of the harvester frame. The bending plate has a mounting surface for mounting the bearing seat, and the connection holes are punched on the mounting surface. The bearing seat corresponds to the connection holes and is fixed on the bending plate by fasteners such as bolts and nuts. After the frame is fully welded, it deforms, which leads to a mismatch between the left and right bending plates, and further affects the concentricity of the bearing seats 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 plate continues to reciprocate during operation, and works for a long time at high speed and large feed amount. Only the bending plate supports the vibrating plate during reciprocation. Therefore, the driving structure of the vibrating plate has poor stability and potential safety hazards. Summary Therefore, the technical problem to be solved by this invention lies in overcoming the poor stability and potential safety hazards of the vibrating plate actuator structure in the prior art. To this end, the present invention provides a vibrating plate actuator for a harvester having the following: Two bearing seats are fixed respectively on the side wall surfaces of two support legs which are symmetrically and vertically located at the ends of the frame. An outer spherical bearing is installed in each of the bearing seats. A transmission shaft, both ends of which are fixed in outer spherical bearings, respectively. Two eccentric bearings are fixed at both ends of the transmission shaft in a mirror image manner, respectively, in which, One end of the vibrating plate is fixed on two off-center bearings, and the other end is placed on the frame through a reciprocating guide structure, and A drive wheel is fixed at one end of the transmission shaft and is arranged to be driven by the combine driver and rotate the transmission shaft. The structure of the round-trip guide includes: Two linear bearings are symmetrically located on both sides of the vibrating plate and away from one end of the transmission shaft, and Two vibration paths are symmetrically placed on the frame on both sides of the vibration plate, in which the direction of the vibration path is set at an angle to the horizontal plane, and linear bearings are slidably placed in the vibration paths in one-to-one communication. The vibrating plate actuator for the harvester also includes a connector that connects the vibrating plate to the eccentric bearing. This interface has the following: A ring that is worn and fixed on the bearing off-center and An interface plate, one end of which is fixed to the ring and the other end to the vibrating plate. One open end of the ring is flanged, and the flange edge is perpendicular to the ring wall. The vibrating plate actuator for the harvester also includes a guard plate fixed on a support base on one side of the drive wheel, in which the surface of the guard plate extends along the radial direction of the transmission shaft. And the protective plate has an area larger than the cross-sectional area of the drive wheel. The protective plate is on the bearing seat and at a suitable distance from it. The vibrating plate actuator for the harvester also includes: At least two balancing weights, one placed on the drive wheel and the other on one end of the transmission shaft away from the drive wheel. The balancing weights are asymmetrically arranged at both ends of the transmission shaft. The transmission belt is placed between the drive and driven wheels. The technical solution of this invention has the following advantages: This invention provides a vibrating plate actuator for a harvester, and the actuator includes two bearing seats, a transmission shaft, two eccentric bearings and a driving wheel. The two bearing seats are respectively fixed on the side wall surfaces of two support legs symmetrically arranged at the ends of the frame. An outer spherical bearing is installed in each of the bearing seats. Both ends of the transmission shaft are respectively fixed in the outer spherical bearings. The two eccentric bearings are respectively fixed at both ends of the transmission shaft in a mirror image manner. One end of the vibrating plate is fixed on the two eccentric bearings, and the other end is mounted on the frame through a reciprocating guide structure. The driving wheel is fixed at one end of the transmission shaft and is arranged to be driven by the combine driver to rotate the transmission shaft.The bearing seats are fixed directly on the frame support legs to prevent translational connection, and the frame directly bears the gravity of the vibrating plate and the inertial force of its reciprocating motion, which makes the vibration of the vibrating plate more stable. Brief description of the shapes In order to more clearly describe the technical solutions in the embodiments of this invention or in the prior art, a brief introduction will be given below to the figures that should be used in describing the embodiments or in the prior art. It is clear that the figures described below are merely some of the embodiments of this invention. Other figures can be prepared by those of ordinary skill in the art without any creative effort. Figure 1 is a first structural schematic diagram of a vibrating plate actuator in an embodiment of the present invention. Figure 2 is a second structural schematic diagram of a vibrating plate actuator in an embodiment of the present invention. Figure 3 is a schematic structural diagram of a linear bearing on a vibrating plate in an embodiment of the present invention. Figure 4 is a schematic structural diagram of a vibration path in an embodiment of the present invention. Figure 5 is a schematic structural diagram of an interface in an embodiment of the present invention. Explanations for the symbols in the following figures: H. Vibrating plate; 12b. Support base; 2g. Bearing seat; 3g. Transmission shaft; 4g. Eccentric bearing; 5g. Drive wheel; 61g. Linear bearing; 62g. Vibration path; 7g. Connector; 71g. Ring; 72g. Connector plate; 8g. Balancing weight; 9g. Protective plate. Description with details The technical solutions of this invention, in combination with the accompanying figures, are clearly and completely explained below, and it is clear that the described embodiments are part of the embodiments of this invention. Based on the embodiments of this invention, all other embodiments that can be obtained by people of ordinary skill in the art without any creative effort are within the scope of protection of this invention. In describing this invention, it should be noted that the orientation or positional relationship indicated by terms such as “center,” “top,” “bottom,” “left,” “right,” “vertical,” “horizontal,” “inside,” “outside” is the orientation or positional relationship based on the accompanying figures. Such terms are merely for convenience in explaining this invention and simplifying the description and are not intended to indicate or imply that the device or part in question must be located in a particular orientation or must be constructed or operated in a particular direction. Therefore, these terms should not be construed as a limitation on this invention. Furthermore, the terms “first” and “second” are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In explaining this invention, it should be noted that unless otherwise specified and defined, terms such as "mounted", "connected" and "connection" should be understood in their broad sense, for example, the connection can be a fixed connection, a detachable connection or an integral connection, a mechanical connection or an electrical connection, a direct or indirect connection through an intermediary and a connection between two parts. For those of ordinary skill in this art, the specific meanings of the above terms in this invention can be understood with regard to the specific circumstances. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as no conflict arises between them. Visualization 1 This embodiment provides a vibrating plate actuator for a harvester. As shown in Figure 1, the actuator includes two bearing seats 2g, a transmission shaft 3g, two eccentric bearings 4g and a driving wheel 5g. The harvester frame is formed of a plurality of support legs 12b arranged vertically, and mounting legs are arranged between the support legs 12b. A frame cover is installed between adjacent legs, and a mounting hole is formed in the cover, and the vibrating plate H is installed in the mounting hole. As shown in Fig. 1, two bearing seats 2g are respectively fixed on the side wall surfaces of two support legs 12b symmetrically arranged at the ends of the frame. An outer spherical bearing is installed in each of the bearing seats 2g. Both ends of the transmission shaft 3g are respectively fixed in the outer spherical bearings. Two eccentric bearings 4g are respectively fixed at both ends of the transmission shaft 3g in a mirror image manner. One end of the vibrating plate H is fixed on the two eccentric bearings 4g, and the other end is supported on the frame through a reciprocating guide structure. The driving wheel 5g is fixed at one end of the transmission shaft 3g and is arranged to be driven by the combine driver to rotate the transmission shaft 3g. The bearing seats 2g are directly fixed on the frame support legs 12b to prevent translational connection, and the frame directly bears the gravity of the vibrating plate H and the inertial force of its reciprocating motion, which makes the vibration of the vibrating plate H more stable. The reciprocating guide structure includes two linear bearings 61g and two vibration paths 62g corresponding to the two linear bearings 61g. As shown in Fig. 3, the two linear bearings 61g are symmetrically arranged on both sides of the vibrating plate H and away from one end of the transmission shaft 3g. The two vibration paths 62g are symmetrically arranged on the frame 1 on both sides of the vibrating plate H. As shown in Fig. 4, the vibration path 62g is composed of a bottom plate and side plates that are oppositely arranged on the bottom plate, and a guide channel is formed between the two side plates. The direction of the vibration path 62g is arranged at an angle to the horizontal plane, and the linear bearings 61g are slidably arranged in the vibration paths 62g. A connector 7g is provided between the vibrating plate H and the eccentric bearing 4g. As shown in Figure 5, the connector 7g includes a ring 71g and a connector plate 72g fixed to the ring 71g by welding. An open end of the ring 71g is inserted into a flange edge, and the flange edge is perpendicular to the wall of the ring 71g. The ring 72g covers and is fixed to the eccentric bearing 4g. The other end of the connector 7g is fixed to the side plate body of the vibrating plate H. As shown in Fig. 1 or 2, a guard plate 9g is fixed on the support base 12b on one side of the driving wheel 5g. The surface of the guard plate 9g extends along the radial direction of the transmission shaft 3g. In this embodiment, the guard plate 9g extends over the bearing seat 2g and is at a suitable distance from the bearing seat 2g. The guard plate 9g has a larger area than the cross-sectional area of the driving wheel 5g to completely prevent debris such as crop straw from being screened by the vibrating plate pulley H. The guard plate prevents debris from entering the driving area on one side of the frame, causing it to twist or block, and affecting the normal operation of the machine. As shown in Fig. 1 or 2, the balancing weight 8g is detachably mounted on the driving wheel 5g. The balancing weight 8g is also provided at one end of the transmission shaft 3g away from the guard plate 9g. The balancing weight 8g is detachably fixed on a connecting block, the connecting block is fixed on the transmission shaft 3g, and the balancing weights 8g are asymmetrically arranged at both ends of the transmission shaft 3g. In the process where the transmission shaft 3g rotates and drives the vibrating plate H back and forth, the balancing weight 8g, which is asymmetrical, prevents the vibrating plate H from moving too much and ensures the overall vibration balance of the vibrating plate H. In this embodiment, the transmission belt is placed between the drive wheel 5g of the vibrating plate H and the movable one, and the transmission belt can be a direct or indirect transmission belt. It is understood that the above embodiments are merely examples for the purpose of clear description, and not for the purpose of limiting the embodiments. Other modifications or variations in various forms based on the above description can be made by those of ordinary skill in the art. It is unnecessary or impossible to enumerate all embodiments herein. Obvious modifications or variations resulting therefrom remain within the scope of the invention.
Claims
Claims What is claimed is:
1. A vibrating plate actuator for a harvester comprising: two bearing seats (2g), respectively mounted on the side wall surfaces of two support legs (12b) which are symmetrically and vertically fixed on the ends of the frame (1). An outer spherical bearing is mounted in each of the bearing seats (2g). A transmission shaft (3g), both ends of which are respectively fixed in the outer spherical bearings. Two eccentric bearings (4g) are fixed at both ends of the transmission shaft (3g) in a mirror image manner, in which a vibrating plate (H) having one end fixed on the two eccentric bearings (4g) and the other end supported on the frame through a reciprocating guide structure, and a driving wheel (5g) is fixed at one end of the transmission shaft (3g) and is adjusted to rotate by the combine driver to rotate the transmission shaft (3g). 2.The characteristic of the vibrating plate actuator for a harvester according to claim 1 is that the reciprocating guide structure includes: two linear bearings (61g) symmetrically disposed on both sides of the vibrating plate (H) and away from one end of the transmission shaft (3g), and two vibrating paths (62g) symmetrically disposed on the frame (1) on both sides of the vibrating plate (H), wherein the guiding direction of the vibrating path (62g) is set at an angle to the horizontal plane, and the linear bearings (61g) are slidably disposed in the vibrating paths (62g) in one-to-one communication.
3. The vibrating plate actuator for a harvester according to claim 1 is characterized in that it comprises a connector (7g) connecting the vibrating plate (H) to the eccentric bearing (4g).
4. The vibrating plate actuator for a harvester according to claim 3 is characterized in that the interface (7g) comprises: a ring (71g) which covers and is fixed on the eccentric bearing (4g). an interface plate (72g) which is fixed at one end to the ring and at the other end to the vibrating plate (H).
5. The vibrating plate actuator for a harvester according to claim 4 is characterized in that one end of the ring opening (71g) is located inside the flange edge and the flange edge is perpendicular to the wall of the ring (71g).
6. The vibrating plate actuator for a harvester according to claim 1 is characterized in that it further comprises: a guard plate (9g) fixed on a support base (12b) on one side of the driving wheel (5g), wherein the surface of the guard plate (9g) extends along the radial direction of the transmission shaft (3g), and the guard plate (9g) has a larger area than the cross-sectional area of the driving wheel (5g).
7. The characteristic of the vibrating plate actuator for a harvester according to claim 6 is that the protective plate (9g) covers the bearing seat (2g) and is located at a suitable distance from the bearing seat (2g).
8. A vibrating plate actuator for a harvester according to any one of claims 1-7, characterized in that it comprises: at least two balancing weights (8g), one of which is located on the drive wheel (5g) and the other at one end of the transmission shaft (3g) away from the drive wheel (5g).
9. The vibrating plate actuator for a harvester according to claim 8 is characterized in that the balancing weights (8g) are asymmetrically arranged at both ends of the transmission shaft (3g).
10. The characteristic of the vibrating plate drive for the harvester according to claim 1 is that the transmission belt is placed between the driving wheel (5g) and the driven one.