JP3578675B2 - Combine - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention provides a dustproof cover that is operable to be switched between a cover position that covers the upper part of a transporting device that transports grain culms to a rear threshing device that is located on one of the left and right sides of a driving unit in a mowing unit, and an open position that is open. Related to the combine provided with.
[0002]
[Prior art]
The dust-proof cover eliminates the inconvenience that dust generated from the harvested grain culm being conveyed by the conveying device and dust from the threshing device entrance generated by blowing back of the handling thrust of the threshing device are scattered and fall to the operation unit. It is for doing. And, as in the above combine, when the dustproof cover is operable to be switched between the cover attitude and the open attitude, by switching the dustproof cover to the cover attitude, the inconvenience can be eliminated, When floating straw is deposited near the entrance of the threshing device and adversely affects the transport posture of the harvested grain culm by the transport device, the dustproof cover is switched to the open position and the upper part of the transport device is opened to operate. It is possible to remove floating straw from the section or the ground by pushing the straw into the threshing apparatus, thereby preventing the transport posture of the harvested culm from being disturbed.
[0003]
Conventionally, as a combine having such an advantage, a combine as disclosed in Japanese Patent Application Laid-Open No. 9-121659, that is, a combination in which a dust cover is switched between a cover position and an open position by sliding back and forth is known. .
[0004]
[Problems to be solved by the invention]
However, in the case of the above-described conventional technique, since the posture of the dust-proof cover is switched by sliding, the sliding resistance is large, and especially when the assembling accuracy of the left and right guide rails is poor, the posture is very large. Sex was bad.
[0005]
An object of the present invention is to improve the operability of switching the posture of a dustproof cover.
[0006]
[Means for Solving the Problems]
The features, functions and effects of the present invention according to claim 1 are as follows.
[0007]
〔Characteristic〕
A cover attitude of the reaper located on one of left and right sides of the operation portion covers the upper transport device for transporting the culms the rear of the threshing apparatus, the open position and the switching operation freely dustproof cover for opening provided, this The left and right portions of the rear part of the dustproof cover are fixedly connected to each other by a connecting part having a left and right posture, and the dustproof cover swings up and down around the left and right axis of the connecting part to the left and right brackets connected to the threshing device. The present invention is characterized in that a detent mechanism is provided which is freely mounted and holds the dust-proof cover in a cover position and an open position in a state where the position can be switched according to the swing operation of the dust-proof cover.
[0008]
[Action]
Since the dustproof cover is configured so that the posture is switched by the vertical swing, the resistance of the posture switching becomes the swing resistance and is smaller than the sliding resistance.
In addition, the detent mechanism allows the dust cover to be held in both the cover position and the open position while allowing the dust cover position to be changed during operation. There is no need to perform the operation to release, and only the swing operation of the dustproof cover is required.
Moreover, the dustproof cover is attached to the left and right brackets connected to the threshing device so that the rear right and left portions of the dustproof cover are fixedly connected to each other, so that the dustproof cover is vertically swingable, so that the dustproof cover is prevented from tilting left and right, It is possible to prevent twisting at the mounting portion.
[0009]
〔effect〕
Therefore, the posture of the dustproof cover can be switched easily and easily with one operation.
[0010]
The features, functions and effects of the present invention according to claim 2 are as follows.
[0011]
〔Characteristic〕
In the present invention according to claim 1, the dustproof cover has a structure in which a cover body made of a synthetic resin and left and right reinforcing portions for reinforcing left and right sides of the cover body are fixedly connected to each other by a connecting portion in a left-right orientation. in that it is composed of a frame.
[0012]
[Action]
The dust-proof cover is operated to switch the posture by grasping the side of the driving unit side of the left and right sides from the driving unit, or is operated to switch the posture by grasping the side of the ground from the ground.
Focusing on the above points, the cover body is reinforced with a frame consisting of left and right reinforcing parts that reinforce the left and right sides of the synthetic resin cover body and a connecting part in a left-right orientation that connects these reinforcing parts. Therefore, while the cover body is made of synthetic resin and the dustproof cover is made as light as possible, even when the side of one side is gripped and the switching operation is performed as described above, the twist of the dustproof cover is prevented. and minimized, Ru can be reduced entanglement of the mounting portion.
Since the connection part of the strong frame is selected as a part of the dustproof cover to be attached to the bracket, the dustproof cover can be attached without looseness with sufficient attachment strength.
[0013]
〔effect〕
Therefore, synergy between the fact that the dustproof cover can be made lightweight and that the dustproof cover can be swung without twisting and play can be more easily and lightly and smoothly operated to switch the position of the dustproof cover.
[0014]
The features, functions and effects of the present invention according to claim 3 are as follows.
[0015]
〔Characteristic〕
In the present invention according to claim 2 described above, to constitute the detent mechanism, both ends of the bar in the left-right sideways posture are attached to the frame so as to be movable within a set range in the perspective direction with respect to the left-right sideways axis. A spring is provided for urging the dust-proof cover to move in the approaching direction, and the bar is engaged with each of the right and left brackets by approaching movement by the urging force in a state where the dust-proof cover swings in the cover position, thereby holding the dust-proof cover in the cover position. The first concave portion and the second concave portion for holding the dustproof cover in the open position by engaging the bar by approaching movement by the urging force when the dustproof cover is in the swing position in the open position are formed.
[0016]
[Action]
Since the left and right brackets hold the dustproof cover in the cover position and the open position, the dustproof cover can be stably held in each position without tilting left and right.
[0017]
〔effect〕
Therefore, the posture of the dust cover can be stably and reliably maintained.
[0018]
The features, functions and effects of the present invention according to claim 4 are as follows.
[0019]
〔Characteristic〕
In the present invention according to the third aspect, the present invention is characterized in that a single spring is provided so as to act on a central portion between the left and right brackets of the bar.
[0020]
[Action]
A single bar is engaged with the first and second recesses of the left and right brackets to hold the dust-proof cover in the cover position or the open position. Paying attention to the fact that one bar is engaged with the concave portion and the second concave portion, one spring is arranged in a state acting on the central portion between the left and right brackets of the bar. Is securely engaged with the first and second concave portions of the left and right brackets, but only one spring is required.
[0021]
〔effect〕
Accordingly, the structure can be simplified and the cost can be reduced while the dust-proof cover can be reliably held in each position.
[0022]
The features, functions and effects of the present invention according to claim 5 are as follows.
[0023]
〔Characteristic〕
In the present invention according to the third or fourth aspect, the lock device is operable to switch between a lock position that acts on the bar to prevent the dustproof cover from swinging upward from the cover position and a release position that allows the swing. Is provided.
[0024]
[Action]
A lock device is provided to switch the lock device to the lock position to fix the dust cover in the cover position, and to switch to the release position to allow the dust cover to swing to the open position. Therefore, by switching the lock device to the release position during work, the floating straw can be freely processed by switching the position of the dust-proof cover, while the lock device is in the lock position during non-operation such as traveling. By switching, it is possible to reliably prevent the dust cover from unexpectedly swinging upward due to wind or the like.
Moreover, since the bar is also used as an engaging device for fixing the dustproof cover in the cover position with the lock device, there is no need to separately provide an engaging device for fixing the dustproof cover in the cover position. , It is only necessary to provide a lock.
[0025]
〔effect〕
Therefore, floating processing can be performed with good workability by switching the dust-proof cover to the open position at the time of work, and accidental swinging of the dust-proof cover at the time of non-work can be prevented, and the structure is simple and inexpensive. Can now be implemented.
[0026]
BEST MODE FOR CARRYING OUT THE INVENTION
As shown in FIG. 1, the combine is connected to a front part of a self-propelled body equipped with a pair of right and left crawler traveling devices 1 so that a cutting part 2 that cuts planted grain culms and conveys it rearward can swing up and down. The self-propelled body is equipped with a threshing device 3 for threshing the harvested grain culm conveyed from the mowing unit 2, and a transport device 2 </ b> A for transporting the harvested grain culm of the mowing unit 2 to the threshing device 3. The boarding operation unit 4 is arranged on one side of the left and right sides of the vehicle.
[0027]
As shown in FIG. 3, the dustproof cover 5 operable to be switched between a cover position covering the upper portion of the transfer device 2A and an open position to open by a vertical swing around the left-right axis P at the rear. A detent mechanism 6 is provided for holding the dust-proof cover 5 in a cover position and an open position in a state in which the position change according to the operation of the dust-proof cover 5 is allowed.
[0028]
As shown in FIGS. 2 and 3, the dustproof cover 5 has a transparent cover body 5A made of synthetic resin and left and right reinforcing portions 5a for reinforcing left and right sides of the cover body 5A. , More specifically, a frame 5B having a U-shape in plan view, and the cover body 5A is bolted to each of the left and right reinforcing portions 5a at two front and rear positions.
[0029]
As shown in FIGS. 2 and 3, the mounting means of the dustproof cover 5 bolts two brackets 7 arranged at an interval in the left-right direction to the threshing device 3, and attaches the frame 5B to these brackets 7. This is a means for attaching the dustproof cover 5 so as to be able to swing up and down with the connecting portion 5b of FIG.
[0030]
The bracket 7 includes a base bracket 7A bolted to the threshing device 3 and a tip bracket 7B bolted to a distal end (front end) of the base bracket 7A. It is attached to the tip bracket material 7B.
[0031]
As shown in FIG. 2 and FIG. 3, the detent mechanism 6 attaches both ends of the bar 8 in the left-right sideways posture having a length substantially covering the entire left-right width of the dust-proof cover 5 to the frame 5B. A coil spring 9 that urges the bar 8 to move in the approaching direction is installed between the connecting portion 5b and the bar 8, and the left and right end bracket members 7B The first recess 10A holds the dustproof cover 5 in the cover position by engaging the bar 8 by approaching movement by the urging force in a state where the dustproof cover 5 swings in the cover position, and the dustproof cover 5 is opened. A second concave portion 10B is formed in which the bar 8 is engaged by approaching movement by an urging force in a state where the bar 8 is in the swinging position to hold the dustproof cover 5 in the open position. In addition, the bar 8 is formed of a round pipe so that the bar 8 can smoothly run on a portion of the bracket member 7B located between the first concave portion 10A and the second concave portion 10B with an operation. .
[0032]
As shown in FIG. 4, the means for attaching both ends of the bar 8 to the frame 5B is such that the end of the bar 8 is inserted through a reinforcing plate 5c fixed to a bent portion above the rear end of the reinforcing portion 5a. This is a means for forming the holding hole 11 as an elongated hole extending in the above-mentioned perspective direction.
[0033]
The coil spring 9 is a single piece, and is disposed so as to act on the center of the bar 8 between the left and right brackets 7.
[0034]
As shown in FIGS. 5 and 6, the locking posture for engaging the bar 8 to prevent the dust cover 5 from swinging upward from the cover posture and the releasing posture for allowing the swing movement are controlled. A lock member 12 with an operation piece 12a that can freely swing and rotate around the direction axis x is attached to one end bracket member 7B. Reference numeral 13 denotes a posture holding spring that generates a frictional force for fixing the posture of the lock member 12.
[0035]
[Another embodiment]
The dustproof cover 5 is configured to be swingably switchable between a cover position and an open position with the front end side as a fulcrum.
[0036]
A plurality of coil springs 9 may be provided.
[Brief description of the drawings]
FIG. 1 is a side view of a main part of a combine. FIG. 2 is a cutaway plan view of a dustproof cover. FIG. 3 is a side view of a main part of the dustproof cover in various postures. FIG. 4 is a cutout of a bar mounting part. Side view [Fig. 5] Side view of locking device in each posture [Fig. 6] Cutaway plan view of locking device mounting part [Explanation of reference numerals]
2 Cutting unit 2A Conveying device 3 Threshing device 4 Operating unit 5 Dustproof cover 6 Detent mechanism 5A Cover body 5B Frame 5a Reinforcement unit 5b Connection unit 7 Bracket 8 Bar 9 Spring 10A First concave portion 10B Second concave portion 12 Locking tool P Left-right axis core

Claims (5)

A cover attitude of the reaper located on one of left and right sides of the operation portion covers the upper transport device for transporting the culms the rear of the threshing apparatus, the open position and the switching operation freely dustproof cover for opening provided, this The left and right portions of the rear part of the dustproof cover are fixedly connected to each other by a connecting part having a left and right posture, and the dustproof cover swings up and down around the left and right axis of the connecting part to the left and right brackets connected to the threshing device. A combine provided with a detent mechanism that is freely mounted and holds the dust cover in a cover position and an open position in a state in which the position can be switched with the swing operation of the dust cover. Claims dustproof cover, the synthetic resin of the cover body, and a frame fixed connecting structure at the junction of the right and left laterally extending orientation reinforcing portions of reinforcing the right and left side edges of the cover body The combine according to 1. To configure the detent mechanism, both ends of the bar in the horizontal position are attached to the frame so that they can move within the setting range in the perspective direction with respect to the horizontal axis, and a spring that biases the bar in the approach direction is provided. A first recess for holding the dust cover in the cover position by engaging the bar with the urging force in a state in which the dust cover is swingingly positioned in the cover position in each of the left and right brackets, and an open position for the dust cover. 3. A combine according to claim 2, wherein a second recess is formed for engaging the bar by approaching movement by the urging force in a state where the dust cover is held in the open position in the swinging position. The combine according to claim 3, wherein the spring is a single spring and is disposed so as to act on a central portion between the left and right brackets of the bar. The combine according to claim 3 or 4, further comprising a lock member that can be operated to switch between a lock position that acts on the bar to prevent the dust cover from swinging upward from the cover position and a release position that allows the swing. .

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