JPH0657125U - Cutting blade drive in combine - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] There is a problem that the conveying stems may be disturbed or fall out due to the vibration caused by the reciprocating cutting blade device, which increases the vibration during operation without load. Provided is a combined cutting blade drive apparatus improved so as to be obviated in advance. [Structure] The transmission case 6 extending from the vehicle body 2 to the grass frame 7
A lifting frame composed of a series of slabs, a weeding board 8, a raising device 9, a reciprocating type cutting blade device 10, and a culm conveying device 11
In the harvesting and conveying section 5 of the combine configured by arranging the above components, the cutting blade drive system is provided with a clutch for intermittently connecting and disconnecting its transmitted power, and this clutch is used for the reciprocating type cutting blade device 10
The cutting blade drive device 10 is configured so that it can be automatically interrupted by a detection signal of a sensor for detecting the presence or absence of a stem culm arranged in front of the cutting blade.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cutting blade drive device in a combine.

[0002]

[Prior art]

 As is well known, combine harvesters move the cutting and carrying section along the row of planting stalks by traveling of the vehicle body to raise and shape the planting stalks to be introduced into the stem culm introduction path, and shape the stems. The root of the culm is cut by a reciprocating type cutting blade device and cut, and the cut culm is held and conveyed by a stalk transfer device, and is fed to the leading end of the feed chain of the threshing part to perform work. When reaching the end of the culm row (such as headland in the field), it is possible to perform the same work as above while changing the direction of movement of the car body and moving the cutting and transporting section along the stalk row. Repeated.

[0003]

[Problems to be solved by the device]

 In the combine operation as described above, when the vehicle body is turned to reach the end of the row of planting stalks, the row of planting stalks to be temporarily cut is cut off, so the reciprocating type is in operation. When the cutting blade device becomes unloaded, the cutting stem culm group is carried to the stem culm transporting device and transported toward the leading end of the feed chain of the threshing section. Compared to the normal work that is going on, the stock is less bulky and the layer is thinner.

Therefore, during normal work, the group of stalks held by the stalk transfer device is transferred in a constant layer state, and the reciprocating-type cutting blade device is vibrated by a load for cutting the planted stalks. Since the stalk is pressed low, it does not happen that the posture of the culm is disturbed or part of it falls off during transportation, but when turning the vehicle, as described above, As the layer of stalks conveyed is thinned, the stalk culm group whose strength is weakened is disturbed by the vibration of the reciprocating type cutting blade device, which is increased by operation under no load, In particular, the harvesting and transporting section of the combine has a reciprocating cutting blade device installed horizontally on a weeding frame that is connected to the tip of the transmission case that extends from the vehicle body. Since many of them are configured as It is highly affected by the vibration of the device. Further, in the unloaded state, vibration and noise of the mowing and conveying section are large, which causes an increase in operator's discomfort.

Therefore, the present invention has been improved so that the posture of the stalks during transportation will not be disturbed or fallen off due to the vibration caused by the operation of the reciprocating type cutting blade device in the unloaded state. Accordingly, the present invention provides a cutting blade drive device for a combine, which is improved so as to reduce the discomfort of the operator.

[0006]

[Means for Solving the Problems]

 That is, in the combine cutting blade drive device according to the present invention, the grass frame 8 and the raising plate are set up on the elevating frame composed of the transmission case 6 extending forward from the vehicle body 2 and the grass frame 7 connected thereto. In the harvesting and conveying section 5 of the combine, which is configured by arranging the device 9, the reciprocating type cutting blade device 10, the stem and culm conveying device 11 and the like, among the transmission systems that drive the respective devices 9, 10 and 11, the cutting blade The drive system 17 is provided with clutches 25 and 26 for intermittently connecting and disconnecting the transmitted power thereof, and the detection of a sensor-33 for detecting the presence or absence of a stalk, which is arranged in front of the reciprocating cutting device 10, is provided. The feature is that the signal is automatically turned on and off.

[0007]

[Action]

 In the reaper to which the device of the present invention is applied, when the sensor-33 disposed in the stalk-introducing path 12 in front of the reciprocating-type shaving blade device 10 emits a signal that detects the presence of the stalk, the cutting blade is detected. The clutches 25 and 26 interposed in the drive system 17 are connected to drive the reciprocating type cutting blade device 10 in a usual manner, and a desired cutting operation of the entire cutting transfer section is performed. Then, when the sensor 33 outputs a signal that the absence of stalks is detected, the clutches 25 and 26 in the cutting blade drive system 17 are automatically disengaged, and the reciprocating cutting blade device 10 is operated. Vibration and noise caused by the operation of the reciprocating-type cutting blade device 10 in an unloaded state are stopped automatically, and the vibration and noise of the entire cutting and conveying section are reduced.

[0008]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. 1 is a side view showing a part of a combine in which the device of the present invention is implemented, FIG. 2 is a plan view showing a cutting blade and its drive system, FIG. 3 is a sectional view showing an internal structure of the cutting blade drive system, FIG. FIG. 5 is an enlarged cross-sectional view showing a cutting blade drive system clutch, and FIG. 5 is an explanatory view showing an operating system for connecting and disconnecting the cutting blade drive system clutch.

In FIG. 1, the combiner is provided with necessary devices such as a threshing unit 3, a control unit 4, an engine (not shown) and the like above a vehicle body 2 equipped with the crawler traveling device 1. The cutting and conveying section 5 is provided at the front part of the above so as to be movable up and down.

The reaping and conveying section 5 extends a transmission case 6 containing a transmission mechanism for transmitting power from the engine forward from the vehicle body 2 and attaches a weed frame 7 to the transmission case 6. The lifting frame is composed of a weeding board 8, a raising device 9, a reciprocating type cutting blade device 10, a stem and culm transporting device 11, and the like.

The cutting blade device 10 is a reciprocating type, and the fixed blade side is fixedly attached to a mounting seat provided on the lifting frame, and the grass frame 7 is attached in a direction crossing the lifting frame. It is laid horizontally on the lower side. Then, a stem culm introduction path 12 is formed at a position from the weeding plate 8 at the front end of the elevating frame to a position above the reciprocating type cutting blade device 10, and the transfer end portion of the stalk culm introduction path 12 is the stem culm. The culm transfer device 11 is connected to the starting end of the conveying device 11 so that the culm transfer device 11 has an end part connected to the feed chain starting end of the threshing unit 3 so that the culm can be transferred.

In FIG. 2 and FIG. 3, the tip of a cutting blade arm 15 that swings about a pivot shaft 14 is engaged with a sliding blade side knife head 13 of the reciprocating cutting blade device 10. And the other end of the cutting blade arm 15 is connected to the cutting blade crank rod 16, and the cutting blade crank rod 16 is further housed in the transmission case 6 for cutting blade drive system. The cutting blade crankshaft 18 is connected to the cutting blade crankshaft 17 through a cutting blade crank 19.

In FIG. 3 and FIG. 4, the cutting blade drive system 17 is configured with a transmission system for driving the raising device 9 and the stalk-carrying device 11. That is, the input shafts 20, 20 for receiving the power from the engine are horizontally provided in the lateral case at the tip of the transmission case 6, and the input shafts 20 are raised to drive the drive shafts 21 ... (Not shown in FIG. 2) are interlocked to drive the raising device 9 and the stalk-carrying device 11, and a cutting blade drive system 17 is provided in the middle of the input shaft 20. . Then, the cutting blade drive system 17 is configured as follows.

A cutting blade crankshaft 18 orthogonal to the input shafts 20, 20 is rotatably supported in a housing portion 22 formed at a predetermined portion of the transmission case 6, and the cutting blade crankshaft is supported. Both input shafts 20 and 20 are interlockingly coupled by constantly engaging the bevel gears 24 and 24, which are wedged at the ends of the input shafts 20 and 20, with the bevel gear 23 that is loosely fitted to the input shaft 18. is doing.

A clutch pawl 25 is formed on the bevel gear 23 fitted to the cutting blade crankshaft 18, and a clutch body 27 having a clutch pawl 26 corresponding to the clutch pawl 25 is attached to the cutting blade crankshaft 18. When both clutch pawls 25 and 26 are slidably engaged with each other, that is, when the clutch is engaged, the cutting blade crankshaft 18 is rotationally driven and both clutch pawls 25 and 26 are disengaged. The blade crankshaft 18 is configured to stop.

As shown in FIG. 4, the clutch body 27 is elastically biased by a spring 28 so that it is normally kept in a clutch engaged state, and a shifter 29 engages with the cam groove 30. Then, the thrust force in the axial direction causes sliding movement in the clutch disengagement direction.

The shifter 29 is normally kept in the retracted position, and when the bush pool wire 32 is actuated in a predetermined direction by the electric motor 31 shown in FIG. 5, the cam of the clutch body 27 is moved. It is provided so as to advance in the direction of engaging with the groove 30. The electric motor 31 is a sensor 33 which is disposed in front of the reciprocating type cutting blade device 10, specifically, in the stem culm introducing path 12, specifically in the rear side near the lower end of the raising device 9. A control circuit (not shown) that operates in response to a closing signal from these devices is configured to automatically operate and stop.

The sensor 33 detects whether or not there is a planting stem culm fed toward the reciprocating type cutting blade device 10, and the stalk introducing position preceding the reciprocating type cutting blade device 10 is introduced. When there is no planted stem culm in the path 12, the absence thereof is detected and a signal for operating the shifter 29 to the clutch disengaged state is input to the control circuit. It should be noted that the control circuit is of course configured so that it can be switched between a working state and a non-working state. However, in the working state of the control circuit, there seems to be a slight omission in the planting culm row. In this case, in order to prevent the clutch from being disengaged unnecessarily, the sensor-32 is configured to disengage the clutch with a predetermined time lag after detecting the absence of the stalk. Is preferred.

[0019]

[Effect of device]

 In the combine in which the device of the present invention is implemented, if the planting stem culm is not present in the stem culm introduction path 12 which is in front of the reciprocating type cutting blade device 10, the sensor that detects the absence thereof is detected. -The clutches 25 and 26 incorporated in the cutting blade drive system 17 are automatically disengaged by a signal, the reciprocating cutting blade device 10 is independently stopped, and vibration due to the operation of the reciprocating cutting blade device 10 under no load condition is generated. Increase is suppressed.

Therefore, when the vehicle is traveling, the stalks introduced into the mowing and transporting section 5 are lost, and the stalks and stalks are transported by the stalk-and-stalk transporting device 11 toward the leading end of the feed chain of the threshing section. Even if the group of transferred cutting culms is thin and thin, the stalks will not be disturbed or fall out, and good transportation will continue. Further, by automatically stopping the reciprocating type cutting blade device 10, vibration and noise of the entire cutting and conveying section 5 in a non-working posture can be suppressed to a low level, so that the operator's discomfort is reduced and unnecessary reciprocating type cutting is performed under no load. The blade device 10 is not operated, and the reciprocating type cutting blade device and other durability are improved.

[Brief description of drawings]

FIG. 1 is a side view showing a part of a combine in which the device of the present invention is implemented.

FIG. 2 is a plan view showing a cutting blade and its drive system.

FIG. 3 is a cross-sectional view showing an internal structure of a cutting blade drive system.

FIG. 4 is an enlarged sectional view showing a clutch of a cutting blade drive system.

FIG. 5 is an explanatory diagram showing an operating system for connecting and disconnecting a clutch of a cutting blade drive system.

[Explanation of symbols]

 2 Vehicle body 5 Cutting and conveying section 6 Transmission case 7 Weeding frame 8 Dividing board 9 Raising device 10 Reciprocating type cutting blade device 11 Stem culm conveying device 12 Stem culm introduction path 17 Cutting blade drive system 25 Clutch 26 Clutch 33 Sensor −

Claims (1)

[Scope of utility model registration request] 1. An elevating frame composed of a transmission case (6) extending forward from a vehicle body (2) and a weeding frame (7) connected thereto, a weeding plate (8), and a raising frame. Device (9), reciprocating cutting blade device (10),
In the harvesting and conveying section (5) of the combine, which is configured by arranging the stem and culm conveying device (11) and the like, the respective devices (9), (10),
Among the transmission systems that drive (11), the cutting blade drive system (17) is provided with clutches (25) and (26) that independently interrupt the transmitted power, and the clutches (25) and (26) are used for reciprocating cutting. Blade device
A cutting blade drive device in a combine, characterized in that the cutting signal is automatically interrupted by a detection signal of a sensor (33) for detecting the presence or absence of a stem culm arranged in front of (10).