Header gap bridge disconnecting device

Abstract

The utility model discloses a cutting table gap bridge disconnecting device which comprises a transmission belt connected with a gap bridge driving wheel and cutting table power output. The device further comprises a disconnecting structure and a support for installing the disconnecting structure, the disconnecting structure comprises a driving part and a disconnecting part, and the driving part drives the disconnecting part to press or loosen the transmission belt. Compression or loosening of the transmission belt can be achieved through matching of the driving part and the disconnecting part, when the disconnecting part compresses the transmission belt, the transmission belt can transmit power output of the header to the gap bridge driving shaft, and in the state, the header and the gap bridge work at the same time; when the disconnecting piece loosens the transmission belt, the transmission belt does not transmit power output any more, and in the state, the header and the gap bridge do not work. Compared with a clutch in the prior art, the clutch is simple in structure, higher in clutch efficiency and capable of achieving rapid separation and combination of the gap bridge and the header.

Description

Technical Field

[0001] This utility model relates to a header bridge disconnection device, specifically a header bridge disconnection device used in combine harvesters. Background Technology

[0002] Combine harvesters are primarily used for combined harvesting, completing cutting, threshing, separating, and cleaning operations in a single pass in the field. After crops such as corn, millet, and sorghum mature, existing combine harvesters generally harvest them via the header, then transport them through a bridge into the axial-flow threshing chamber, where they are cleaned and stored in the grain bin. Some existing combine harvesters use a linkage between the bridge and the header; that is, when the header is working, the bridge works simultaneously, so the crops harvested by the header are synchronously transported by the bridge into the rear threshing chamber for threshing.

[0003] However, during the use of combine harvesters, the workload is prone to be unstable due to factors such as the dryness and wetness of crops and the unevenness of the consistency of the crops. Furthermore, when the bridge or header malfunctions, the header must be stopped before it can be maintained, which will seriously affect the harvesting progress and work efficiency. Therefore, Chinese patent document CN201365419Y discloses a bridge clutch, in which the clutch shaft is mounted on the side wall of the bracket, and the middle part has a clutch plate and a clutch steel plate placed in the clutch housing. An adjusting screw is installed between the clutch pressure plate and the clutch plate via a spring. A sprocket with a clutch cover is mounted on the left end of the bearing sleeve via a rolling bearing. A splined sprocket is mounted on the clutch shaft at the right end of the bearing sleeve. A splined bushing is installed between the splined sprocket and the rolling bearing. A release lever is mounted on the end of the adjusting screw that extends out of the clutch housing. The release lever is connected to the release bearing. The release bearing seat is mounted on the clutch shaft via the release shaft. The bracket has a vertical support arm, and the support arm has a rotating clutch arm. The rotating clutch arm is assembled with a clutch shift fork, which is placed in the outer groove of the release bearing seat.

[0004] In this prior art, the clutch is mounted on the frame between the first distribution auger and the overpass drive shaft. When the clutch is engaged, the clutch arm drives the clutch fork, and through the transmission of components such as the release bearing housing, release bearing, and release lever, the clutch disc, clutch pressure plate, clutch steel plate, and sprocket with clutch cover are separated, thereby stopping the overpass drive shaft and the cutting table. However, the clutch structure in this prior art is relatively complex, and the clutch operation requires the transmission of multiple components, thus it cannot achieve clutch operation in a timely manner and reduces clutch efficiency. Utility Model Content

[0005] To address the technical problems of complex clutch structures and low clutch efficiency in the prior art, this utility model provides a cutting table bridge disconnection device, including a transmission belt connecting the bridge drive wheel and the cutting table power output; wherein: it also includes a disconnection structure and a bracket for mounting the disconnection structure, the disconnection structure includes a drive component and a disconnection component, the drive component drives the disconnection component to press or release the transmission belt.

[0006] In existing technologies, the separation of the sprocket with the clutch cover from the clutch shaft requires the cooperation of components such as the clutch arm, clutch fork release bearing housing, release bearing, and release lever, thus stopping the bridge drive shaft and the cutting table from working, resulting in a complex structure. Furthermore, each additional component in the clutch process requires additional time to complete its transmission, thereby prolonging the overall clutch operation and causing delays in clutch engagement, thus reducing clutch efficiency.

[0007] In this solution, the tightening or loosening of the drive belt is achieved through the cooperation of the drive component and the disconnector. When the disconnector tightens the drive belt, the drive belt transmits the power output of the cutting table to the drive shaft of the bridge. In this state, the cutting table and the bridge work simultaneously. When the disconnector loosens the drive belt, the drive belt no longer transmits power output. In this state, the cutting table and the bridge stop working. Compared with the clutch in the prior art, this solution has a simpler structure and higher clutch efficiency, enabling rapid separation and engagement of the bridge and the cutting table.

[0008] Preferably, the disconnecting component includes a driving end connected to the driving component and a pressing end for pressing the transmission belt. The driving end and the pressing end are arranged at an angle, and the connection between the driving end and the pressing end is hinged to the bracket. In this solution, the disconnecting component composed of the driving end and the pressing end has a simple structure and can reduce the manufacturing cost of the disconnecting device.

[0009] Preferably, the length of the driving end is less than the length of the pressing end. In this solution, since the length of the driving end is less than the length of the pressing end, a small movement of the driving end can drive the pressing end to move a long distance, resulting in a simple structure.

[0010] Preferably, the clamping end is equipped with a clamping wheel for clamping the drive belt. In this design, the clamping wheel facilitates the normal movement of the drive belt.

[0011] Preferably, the clamping wheel is hinged to the clamping end. This design facilitates the normal movement of the drive belt.

[0012] Preferably, the pressure roller is positioned directly above the drive belt. This design facilitates the placement of the pressure roller.

[0013] Preferably, the clamping end is further provided with a limiting plate, which is located outside the clamping wheel and has a limiting part for the transmission belt. In this design, the limiting part can lift the transmission belt when it is loosened, further ensuring the disconnection of the bridge from the power output of the cutting table.

[0014] Preferably, it also includes a control button for starting the drive unit. The control button in this design facilitates control of the disconnection operation.

[0015] This utility model has the following beneficial effects:

[0016] 1. This utility model utilizes the cooperation of a drive component and a disconnector to tighten or loosen the transmission belt. When the disconnector tightens the transmission belt, the transmission belt transmits the power output of the cutting table to the drive shaft of the bridge. In this state, the cutting table and the bridge work simultaneously. When the disconnector loosens the transmission belt, the transmission belt no longer transmits power output. In this state, the cutting table and the bridge cease to work. Compared with existing clutches, this utility model has a simpler structure and higher clutch efficiency, enabling rapid separation and engagement of the bridge and the cutting table.

[0017] 2. This utility model is simple to operate; the separation and connection of the bridge and the cutting platform can be achieved by operating the control buttons.

[0018] 3. This utility model has a simple structure, is easy to assemble, and has a long service life. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of an embodiment of a cutting platform bridge disconnection device according to the present invention;

[0020] Figure 2 for Figure 1 A schematic diagram of the drive component. Detailed Implementation

[0021] The following detailed description illustrates the specific implementation method:

[0022] 1. Definition

[0023] Cutting table: refers to the mechanical component in agricultural machinery used for harvesting crops.

[0024] Bridge: A transitional component in a combine harvester used for material transport, located between the header and the threshing chamber.

[0025] 2. The reference numerals in the accompanying drawings of the instruction manual include: 1. Drive component; 2. Disconnector; 3. Control button; 4. Transmission belt; 5. Overhead drive wheel; 6. Cutting table power output; 7. Bracket; 8. Drive end; 9. Hexagonal flange bolt; 10. Cylindrical pin; 11. Pressure wheel; 12. Fixing pin; 13. Flat washer; 14. Spring washer; 15. Hexagonal head nut; 16. Limiting plate.

[0026] The basic implementation examples are as follows: Figure 1 and Figure 2 The diagram shows a cutting table bridge disconnection device, including a transmission belt 4 connecting the bridge drive wheel 5 and the cutting table power output 6. It also includes a disconnection structure and a bracket 7 for mounting the disconnection structure. The disconnection structure includes a drive component 1 and a disconnection component 2. The drive component 1 drives the disconnection component 2 to press or release the transmission belt 4. The drive component 1 is connected to a control button 3, which controls the start or stop of the drive component 1. In this embodiment, the drive component 1 uses a hydraulic device. The push rod of the hydraulic device is connected to the disconnection component 2.

[0027] Specifically, the disconnector 2 includes a drive end 8 connected to the drive unit 1 and a clamping end for clamping the transmission belt 4. The length of the drive end 8 is shorter than the length of the clamping end, and the drive end 8 and the clamping end are set at an angle. The connection between the drive end 8 and the clamping end is hinged to the bracket 7. The bracket 7 is fixed to the frame or the front side of the frame side wall by four hexagonal flange bolts 9. The disconnector 2 is then installed on the bracket 7 and fixed with elastic cylindrical pins 10. The hexagonal flange bolts 9 are M10×20 hexagonal flange bolts, and the elastic cylindrical pins 10 are 8×50 elastic cylindrical pins. The clamping end is hinged to a clamping wheel 11 for clamping the transmission belt 4. The clamping wheel 11 is located directly above the transmission belt 4. A fixing pin 12 passes through the clamping wheel 11 and then out of the clamping end. Then, an upper limit plate 16 is installed. Finally, it is tightened with a flat washer 13, a spring washer 14, and a hexagonal head nut 15. The hexagonal head nut 15 is an M12 hexagonal head nut.

[0028] The specific implementation process is as follows: In the default state, the drive component 1 is in the extended state, the disconnector 2 loosens the transmission belt 4, the power output is disconnected, and the cutter and the bridge do not work. After pressing the control button 3, the drive component 1 shortens and retracts, the drive end 8 of the disconnector 2 moves to the right, and the clamping end descends, clamping the transmission belt 4 below. Thus, the bridge and the cutter output power normally, and the bridge and the cutter work simultaneously.

[0029] The above descriptions are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are knowledgeable of all existing technologies in that field, and possess the ability to apply conventional experimental methods prior to that date. Therefore, those skilled in the art can, based on the guidance provided in this application, improve and implement this solution in conjunction with their own capabilities. Typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A cutter head bridge disconnection device, comprising a transmission belt connecting the bridge drive pulley and the cutter head power output; characterized in that: It also includes a disconnection structure and a bracket for mounting the disconnection structure. The disconnection structure includes a drive component and a disconnection component, and the drive component drives the disconnection component to press or release the transmission belt.

2. The cutting platform bridge disconnection device according to claim 1, characterized in that: The disconnecting component includes a driving end connected to the driving component and a pressing end for pressing the transmission belt. The driving end and the pressing end are arranged at an angle, and the connection between the driving end and the pressing end is hinged to the bracket.

3. The cutting platform bridge disconnection device according to claim 2, characterized in that: The length of the driving end is set to be less than the length of the clamping end.

4. The cutting platform bridge disconnection device according to claim 2 or 3, characterized in that: The pressing end is provided with a pressing wheel to press the transmission belt.

5. The cutting platform bridge disconnection device according to claim 4, characterized in that: The clamping wheel is hinged to the clamping end.

6. The cutting platform bridge disconnection device according to claim 5, characterized in that: The pressure roller is positioned directly above the drive belt.

7. The cutting platform bridge disconnection device according to claim 6, characterized in that: It also includes control buttons for starting the drive unit.

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