Power take-off control for a corn harvester

Abstract

The application discloses a corn harvester power take-off control device in the technical field of agricultural machinery, and aims to solve the problems of complex transmission structure, energy consumption and mechanical life damage in the prior art, and comprises a power take-off handle, a pull ring indexing pin is arranged at the tail of the power take-off handle, the pull ring part of the pull ring indexing pin is connected with one end of a reversing mechanism, the other end of the reversing mechanism is connected with one end of a limiting pull wire, the other end of the limiting pull wire is connected with a clutch pedal mechanism, the rocker arm of the clutch pedal mechanism is connected with the rocker arm of a clutch through a clutch pull wire, the end cover of the clutch is connected with the tail of a power take-off push-pull flexible shaft through a rocker arm mechanism, and the head of the power take-off push-pull flexible shaft is connected with the rocker arm of the power take-off handle. The application can simplify the transmission structure, improve the transmission efficiency and reduce the energy consumption.

Description

Technical Field

[0001] This invention relates to a power take-off control device for a corn harvester, belonging to the field of agricultural machinery technology. Background Technology

[0002] In the operation of corn harvesters, the superstructure power take-off function is used frequently. During non-harvesting operations such as driving and unloading, the power to the superstructure is cut off to reduce energy loss and for safety reasons. However, when harvesting is required, the superstructure power take-off needs to be completed reliably and quickly to drive the header, elevator, peeler and threshing machine.

[0003] There are generally two types of power take-off methods in the industry. One type is to open and close the power take-off by adjusting the tension of the belt on the main output pulley. In the non-working state, the connecting belt is in a slack state and the main output pulley is in a high-speed idling state. This not only generates additional energy loss, but also causes the main output pulley and the connecting belt to be in constant relative motion, resulting in the belt being constantly worn and heated, which greatly reduces the service life of the belt.

[0004] Another method involves manipulating a flexible shaft to control the clutch pressure plate, thereby starting and stopping the output pulley. However, after a period of harvesting, the flexible shaft will undergo flexural deformation due to the load, causing changes in the displacement of the clutch pressure plate. This will affect the transmission efficiency and increase energy loss. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a power take-off control device for a corn harvester, which simplifies the transmission structure, improves transmission efficiency, and reduces energy consumption.

[0006] To achieve the above objectives, the present invention is implemented using the following technical solution: a power take-off control device for a corn harvester, comprising a power take-off handle, wherein a pull ring indexing pin with a pull ring is engaged at the tail end of the power take-off handle, the pull ring portion of the pull ring indexing pin is connected to one end of a reversing mechanism, the other end of the reversing mechanism is connected to one end of a limiting cable, the other end of the limiting cable is connected to a clutch pedal mechanism, and the rocker arm of the clutch pedal mechanism is connected to the rocker arm of the clutch via a clutch cable;

[0007] The end cap of the clutch is connected to the tail of the power take-off push-pull flexible shaft via a rocker arm mechanism, and the head of the power take-off push-pull flexible shaft is connected to the rocker arm of the power take-off handle.

[0008] Optionally, the power take-off handle and the reversing mechanism are both mounted on the power take-off handle seat, which is located on the internal frame of the handrail box of the corn harvester.

[0009] Optionally, the reversing mechanism is an L-shaped plate, the middle of which is rotatably connected to the power take-off handle seat.

[0010] Optionally, the power take-off handle has symmetrical grooves on both sides of its tail, and the indexing pin with pull ring can be engaged in the grooves.

[0011] Optionally, a compression spring mechanism is also included, with both ends of the compression spring mechanism connected to the power take-off handle and the power take-off handle seat, respectively, to prevent the power take-off handle from shaking during the movement of the corn harvester.

[0012] Optionally, it also includes a power take-off mounting mechanism, which is disposed on the clutch, and the tail end of the power take-off push-pull flexible shaft passes through the power take-off mounting mechanism.

[0013] Optionally, the rocker arm mechanism is connected to the power take-off mounting mechanism at its middle section.

[0014] Optionally, the limiting pull wire is threaded onto the limiting pull wire mounting base, and the limiting pull wire mounting base is used to limit the limiting pull wire.

[0015] Optionally, the clutch cable is threaded onto a clutch cable mounting bracket, which is used to limit the clutch cable.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0017] This invention adds a limit operation during the power take-off process. The power take-off handle cannot be operated when the clutch pedal is not depressed to stop the output shaft, thus eliminating the phenomenon of gear grinding caused by human error. The normally closed clutch output device reduces energy consumption. Compared with the existing power take-off method, the overall structure is simpler, the transmission efficiency is higher, the performance is more stable, and the operation is easier. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the state structure of the power take-off handle of the power take-off control device of a corn harvester in a non-power take-off state according to one embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the state structure of the power take-off handle of the power take-off control device of a corn harvester in the power take-off state according to one embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the clutch pedal mechanism of the power take-off control device for a corn harvester in one embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the clutch structure of the power take-off control device of a corn harvester in one embodiment of the present invention;

[0022] In the diagram: 1. Power take-off handle, 101. Groove, 2. Indexing pin with pull ring, 3. Power take-off handle seat, 4. Reversing mechanism, 5. Limiting cable, 6. Limiting cable mounting seat, 7. Power take-off push-pull flexible shaft, 8. Compression spring mechanism, 9. Clutch pedal mechanism, 10. Clutch cable, 11. Clutch, 12. Clutch cable mounting bracket, 13. Rocker arm mechanism, 14. Power take-off mounting mechanism. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0024] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances. Example

[0026] like Figures 1-2 As shown, the power take-off control device for a corn harvester provided in this embodiment of the invention includes a power take-off handle 1, which is rotatably mounted on a power take-off handle seat 3. The power take-off handle seat 3 is located on the internal frame of the handrail box of the corn harvester. The power take-off handle 1 has symmetrically arranged grooves 101 on both sides of its end near the power take-off handle seat 3. The tail of the indexing pin 2 with a pull ring can be engaged in the groove 101 to limit the position of the power take-off handle 1.

[0027] The power take-off handle seat 3 is also equipped with a reversing mechanism 4. The reversing mechanism 4 can be an L-shaped plate, with the middle part of the L-shaped plate rotatably connected to the power take-off handle seat 3. One end of the L-shaped plate is connected to the pull ring part with the pull ring indexing pin 2, and the other end is connected to the limit pull line 5. However, it is not limited to this. Any mechanism that can realize force reversal can be used as the reversing mechanism 4.

[0028] like Figure 3 As shown, the other end of the limit cable 5 is connected to the clutch pedal mechanism 9, and the rocker arm of the clutch pedal mechanism 9 is connected to the rocker arm of the clutch 11 through the clutch cable 10. In order to limit the limit cable 5 and the clutch cable 10, the limit cable 5 and the clutch cable 10 are respectively threaded on the limit cable mounting base 6 and the clutch cable mounting bracket 12.

[0029] Combination Figure 4 The end cap of the clutch 11 is connected to the tail of the power take-off push-pull flexible shaft 7 via the rocker arm mechanism 13, and the head of the power take-off push-pull flexible shaft 7 is connected to the rocker arm of the power take-off handle 1. The clutch 11 is provided with a power take-off mounting mechanism 14, and the tail of the power take-off push-pull flexible shaft 7 passes through the power take-off mounting mechanism 14 and is connected to the rocker arm mechanism 13. The middle part of the rocker arm mechanism 13 is connected to the power take-off mounting mechanism 14. Example

[0030] like Figure 1 As shown, based on Embodiment 1, this embodiment also includes a compression spring mechanism 8. The two ends of the compression spring mechanism 8 are connected to the power take-off handle 1 and the power take-off handle seat 3, respectively, which is used to prevent the power take-off handle 1 from shaking during the movement of the corn harvester.

[0031] The working principle of this invention is as follows: combining Figure 1 , Figure 1 This is a structural diagram of the non-power-taking state. The tail of the indexing pin 2 with pull ring is locked in the groove 101 behind the power-taking handle 1. Therefore, the power-taking handle 1 cannot rotate backward under the limitation of the indexing pin 2 with pull ring, so it cannot drive the power-taking push-pull flexible shaft 7 to move through its rocker arm. At the same time, the compression spring mechanism 8 can prevent the power-taking handle 1 from shaking during the movement of the corn harvester.

[0032] When power take-off operation is required, the operator depresses the clutch pedal mechanism 9, which pulls the clutch cable 10 and the limit cable 5. The clutch cable 10 pulls the rocker arm of the clutch 11, causing the internal clutch disc to move and the output shaft to stop rotating. The limit cable 5 pulls the reversing mechanism 4, which in turn pulls the indexing pin 2 with a pull ring. The tail of the indexing pin 2 with a pull ring disengages from the groove 101 behind the power take-off handle 1.

[0033] Next, the staff pulled the power take-off handle 1 to... Figure 2At the indicated position, the rocker arm of the power take-off handle 1 drives the power take-off push-pull flexible shaft 7 to work. The power take-off push-pull flexible shaft 7 drives the rocker arm mechanism 13 to move, pushing the end cover of the clutch 11 in, thus completing the power take-off action. After the operator releases the clutch pedal mechanism 9, the clutch cable 10 is pulled by the rocker arm of the clutch 11, and the limit cable 5 is pulled by the reversing mechanism 4 to return to its initial state. At this time, the indexing pin 2 with pull ring will be locked in the front groove 101 of the power take-off handle 1, limiting the power take-off handle 1. The pulley on the clutch 11 also starts to move after power take-off.

[0034] When it is necessary to disconnect the power take-off state, the operator presses the clutch pedal mechanism 9. The logic is the same as when power take-off is in progress. The clutch disc of clutch 11 is activated, and the output shaft stops rotating.

[0035] Next, the operator pushes the power take-off handle 1, causing the indexing pin 2 with pull ring to re-lock into the groove 101 at the rear of the power take-off handle 1. At this time, the rocker arm of the power take-off handle 1 pulls the power take-off push-pull flexible shaft 7. The action of the power take-off push-pull flexible shaft 7 disengages the end cover of the clutch 11, completing the disconnection of the power take-off. After the operator releases the clutch pedal mechanism 9, the clutch cable 10 and the limit cable 5 return to their initial state, and the power take-off handle 1 is limited again.

[0036] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A power take-off control device for a corn harvester, characterized in that: The device includes a power take-off handle, the tail of which is fitted with an indexing pin with a pull ring. The pull ring portion of the indexing pin is connected to one end of a reversing mechanism, the other end of which is connected to one end of a limit cable, and the other end of the limit cable is connected to a clutch pedal mechanism. The rocker arm of the clutch pedal mechanism is connected to the rocker arm of the clutch via a clutch cable. The end cover of the clutch is connected to the tail of the power take-off push-pull flexible shaft via a rocker arm mechanism. The head of the power take-off push-pull flexible shaft is connected to the rocker arm of the power take-off handle. The tail of the power take-off handle is provided with symmetrical grooves on both sides, and the indexing pin with pull ring can be locked in the groove. It also includes a compression spring mechanism, the two ends of which are connected to the power take-off handle and the power take-off handle seat, respectively, which is used to prevent the power take-off handle from shaking during the movement of the corn harvester; It also includes a power take-off mounting mechanism, which is mounted on the clutch, with the tail end of the power take-off push-pull flexible shaft passing through the power take-off mounting mechanism, and the middle part of the rocker arm mechanism connected to the power take-off mounting mechanism; The working principle of the power take-off control device for the corn harvester includes: In the non-power take-off state, the tail of the indexing pin with pull ring is locked in the groove behind the power take-off handle, so that the power take-off handle cannot be rotated backward under the limit of the indexing pin with pull ring, and thus cannot drive the power take-off push-pull flexible shaft through its rocker arm. At the same time, the compression spring mechanism prevents the power take-off handle from shaking during the movement of the corn harvester. When power take-off is required, the clutch pedal is depressed, which pulls the clutch cable and the limit cable. The clutch cable pulls the clutch rocker arm, causing the internal clutch disc to move and the output shaft to stop. The limit cable pulls the reversing mechanism, which in turn pulls the indexing pin with a pull ring. The tail of the indexing pin with a pull ring disengages from the groove behind the power take-off handle. Next, pull the power take-off handle from the non-power take-off state to the power take-off state. In the power take-off state, the rocker arm of the power take-off handle drives the power take-off push-pull flexible shaft to work. The power take-off push-pull flexible shaft drives the rocker arm mechanism to move, pushing in the end cover of the clutch. At this time, the power take-off action is completed. After releasing the clutch pedal mechanism, the clutch cable is pulled by the rocker arm of the clutch, and the limit cable is pulled by the reversing mechanism to return to the initial state. At this time, the indexing pin with pull ring is locked in the front groove of the power take-off handle to limit the power take-off handle. The pulley on the clutch also starts to move after power take-off. When it is necessary to disconnect the power take-off (PTO), the clutch pedal is depressed. The logic is the same as when PTO is engaged: the clutch disc engages, and the output shaft stops rotating. Then, the PTO handle is pushed, causing the indexing pin with pull ring to re-engage in the groove behind the PTO handle. At this time, the rocker arm of the PTO handle pulls the PTO push-pull flexible shaft. The action of the PTO push-pull flexible shaft disengages the end cover of the clutch, completing the disconnection of the PTO. After releasing the clutch pedal, the clutch cable and the limit cable return to their initial state, and the PTO handle is again limited.

2. The power take-off control device for a corn harvester according to claim 1, characterized in that: The power take-off handle and the reversing mechanism are both mounted on the power take-off handle seat, which is located on the internal frame of the handrail box of the corn harvester.

3. The power take-off control device for a corn harvester according to claim 2, characterized in that: The reversing mechanism is an L-shaped plate, the middle of which is rotatably connected to the power take-off handle seat.

4. The power take-off control device for a corn harvester according to claim 1, characterized in that: The limiting cable is threaded onto the limiting cable mounting base, which is used to limit the movement of the limiting cable.

5. The power take-off control device for a corn harvester according to claim 1, characterized in that: The clutch cable is threaded through the clutch cable mounting bracket, which is used to limit the clutch cable position.

Images