JP3411473B2 - Combine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a pair of left and right rotary shaft support brackets rotatably fitted on a horizontal rotary shaft that serves as a vertical swing fulcrum of a mowing pretreatment unit, which is erected on a front portion of a body frame. A combiner configured to be bolt-connected to the support base, the rotary shaft being linked to a drive unit via an input pulley provided at one end of the rotary shaft, and capable of transmitting power to a movable part of the pre-mowing processing unit. Regarding

[0002]

2. Description of the Related Art Generally, a mowing pretreatment section is preassembled and then connected to a body frame. Conventionally, at the stage when the mowing pretreatment section is preassembled, the rotary shaft support bracket has its head side rotating as described above. Only by being rotatably fitted on the shaft [see FIG. 4 of Japanese Patent Laid-Open No. 8-172869], the bolt connecting portion provided on the leg side is not received by another member, etc. In addition, the bolt connection portion side is in a hanging posture in which it is positioned below by its weight.

When the mowing pretreatment unit is connected to the machine body frame, the operator operates the operating unit of the hoist (small hoisting machine) that suspends and supports the mowing pretreatment unit with one hand while using the other hand. Place one of the rotating shaft support brackets on the front side in a horizontal position on the support stand to position it, and in parallel with this positioning work, another worker puts the other rotating shaft support bracket in a horizontal position. In this state, the worker mounts on the support base and positions it, and then each worker bolts the rotary shaft support bracket to the support base.

[0004]

According to the above-mentioned conventional structure, two workers are required to place and position the rotary shaft support bracket on the support base, and there is room for improvement in work efficiency. was there.

An object of the present invention is to allow a single worker to perform the work of placing and positioning the rotary shaft support bracket on the support base, and connecting the bolt of the rotary shaft support bracket to the support base. To improve efficiency.

[0006]

[Means for Solving the Problems]

[Structure] The characteristic structure of the invention according to claim 1 is the
It becomes the lower swing fulcrum and is linked to the pre-cutting processing section.
The left and right ones are rotatably fitted on the sideways rotating shaft.
Place the pair of rotating shaft support brackets on the front of the machine frame.
The rotation shaft is connected to one of the supports by bolts.
Linked to the drive unit via an input pulley provided on the
Power is transmitted to the movable part of the pre-mowing processing part
In combine, swing located on the input pulley side
The rotating shaft support bracket in a freely movable state can be connected to and supported by the input pulley.

According to a second aspect of the present invention, in the first aspect of the invention, a pin insertion hole is formed in each of the rotary shaft support bracket and the input pulley, which are located on the input pulley side. A pin that can be inserted and removed is provided over the pin insertion hole so that the rotary shaft support bracket can be connected to and supported by the input pulley.

[Operation] [A] According to the configuration of claim 1, a pair of left and right rotary shaft support brackets rotatably fitted on the lateral rotary shaft that serves as a vertical swing fulcrum of the pre-mowing treatment unit is provided in the machine body. Bolts can be connected to a support stand erected on the front of the frame as follows. A first rotary shaft support bracket, which is provided on one end of the horizontal rotary shaft and is located on the input pulley side, is connected and supported by the input pulley to set in a horizontal posture. In general, a bevel gear is interposed between the rotary shaft and the movable part of the pre-processing section, and the resistance from the movable part is added to the rotary shaft. Therefore, the first rotary shaft support bracket is input. Even when the pulley is connected to and supported by the pulley, the input pulley does not rotate together with the rotary shaft at the weight of the first rotary shaft support bracket, and thus the lateral posture of the first rotary shaft support bracket does not collapse. While the operator is positioned on the side of the second rotary shaft support bracket located on the side opposite to the input pulley, the operator operates the operating part of the hoist that suspends and supports the cutting pretreatment part with one hand, and The rotary shaft support bracket is placed on the support base to determine the position of the first rotary shaft support bracket with respect to the support base, and in parallel with this work, the same operator supports the second rotary shaft support bracket with the other hand. The bracket is placed on the support base in a horizontal posture, and the position of the second rotary shaft support bracket with respect to the support base is determined.

The positioning is performed, for example, in FIG.
As shown in (b), the upward stud bolts 24 provided on the respective support bases 18 are respectively inserted into the elongated second bolt insertion holes 27 formed in the first and second rotary shaft support brackets 20A (20B). This is performed by placing the rotary shaft support brackets 20A and 20B on the support base 18 in a state of being separately inserted. Both rotary shaft support brackets are bolted to the support base. The connection support of the first rotary shaft support bracket to the input pulley is released.

[B] In the structure of claim 1, since the first rotation shaft support bracket is connected and supported by the existing input pulley to set in the lateral posture, the first rotation shaft support bracket is connected and supported. There is no need to newly provide a support member, and an increase in the number of parts can be suppressed.

[C] According to the structure of claim 2, in addition to the same operation as the structure of the above-described structure of claim 1, the first rotating shaft support bracket located on the input pulley side can be provided. The first rotary shaft support bracket can be connected to and supported by the input pulley by simply inserting / removing the pin through the pin insertion hole formed in the input pulley. Therefore, for example, the first rotary shaft support bracket can be input via a bolt. Compared with the case of connecting and supporting and releasing the support to the pulley, the operation of screwing and unscrewing the bolt is unnecessary, and the work of connecting and supporting the first rotary shaft support bracket to and from the input pulley can be performed easily.

[Effect] Therefore, according to the structure of claim 1, even one worker can perform the work of placing the rotary shaft support bracket on the support base and positioning it, and We were able to improve the work efficiency of the bolt connection work to the support base.

According to the structure of claim 2, the work efficiency of the bolt connecting work of the rotary shaft support bracket to the support base can be further improved.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a side view of a self-removing combine for two-row cutting, in which a hydraulic pressure centering on a horizontal axis fulcrum P is provided in front of a machine frame 2 having a pair of left and right crawler traveling devices 1. The cutting pretreatment unit 4 is swingably driven up and down by the cylinder 3 and the threshing device 5
The control unit 6 and the grain hopper 7 are installed.

The reaping pretreatment unit 4 has a reaping unit main frame 9 supported so as to be vertically swingable about a horizontal axis fulcrum P, a pair of right and left raising devices 10 arranged in parallel, and raised grains. A clipper-type cutting device 11 for cutting the stock of culms, a pair of left and right packers 12 for cutting and cutting the cut culms into the middle of the cutting width, and a pair of left and right cantilevers extending obliquely forward from the tops of the packers. The auxiliary transport device 13, a vertical transport device 15 that transports the cut culm to the upper rear and transfers it to the feed chain 14 of the threshing device 5 in a sideways posture are provided.

As shown in FIG. 2, the vertical conveying device 15 comprises a stock holding device 15a that acts on the side of the grain culm and a tip locking and conveying mechanism 15b that operates on the side of the grain stem. By swinging 15 up and down about the horizontal axis fulcrum P, the handling depth can be adjusted.

As shown in FIGS. 3 and 4, the pair of left and right mowing section supporting bases 18 provided upright on the front portion of the machine body frame 2 includes
A driving shaft 19 (corresponding to a lateral rotation shaft) is concentric with a horizontal shaft fulcrum P that serves as a vertical swinging fulcrum of the cutting pretreatment unit 4, and laterally passes through support brackets 20A and 20B (corresponding to a rotation shaft support bracket). It is mounted and the power from the mission case is transmitted to the drive shaft 19. Specifically, a pair of left and right support brackets 20A, 2 rotatably fitted on the driving shaft 19
0B is bolted to the mowing section support base 18, and the driving shaft 19 is linked to the driving section through the input pulley 16 provided at one end thereof, so that the mowing preprocessing section 4 can be vertically conveyed as a movable section. Device 15, raising device 10, hair clipper type cutting device 11
It is configured to be able to transmit power to the etc. (see FIG. 5).

The bolt connection structure between the support brackets 20A, 20B and the mowing section support base 18 will be described.
As shown in FIGS. 7A and 7B, the mowing section support base 18
The stud bolt 24 is planted upward on the rear end side of the upper wall, and the first nut 25 is fixed to the inner surface of the front end of the upper wall. The stud bolt 24 and the first nut are attached to the support brackets 20A and 20B. First and second corresponding to 25
The bolt insertion holes 26 and 27 are formed to support the bracket 20.
A bolt 28 is inserted and screwed from the first bolt insertion hole 26 on the front side of A, 20B to the first nut 25, and the stud bolt 24 is inserted in the second bolt insertion hole 27 on the rear side of the support brackets 20A, 20B. The second nut 29 is screwed and fastened. The second bolt insertion hole 27 on the rear side is formed in a long hole that is long in the front-rear direction, and the stud bolt 24 is inserted into the second bolt insertion hole 27 to insert the stud bolt 24 into the cutting bracket support 18 of the support brackets 20A and 20B. By deciding the position, the positioning is facilitated as described later.

The pair of left and right mowing section supports 18 are made of sheet metal and are molded by a press, and as shown in FIG.
It has a substantially rectangular shape in a side view, and the back surface is formed in a curved shape along the outer peripheral surface of the Karasou case 5a in the threshing device 5, and is formed wider toward the bottom, and as shown in FIG.
The outer peripheral edge 18a is bent along the lateral direction of the machine body to have a three-dimensional shape.

As shown in FIGS. 7A and 7B, pin insertion holes 17a and 17b are formed in the overhanging portion provided on the support bracket 20A located on the input pulley 16 side and the input pulley 16, respectively. Together with both pin insertion holes 1
By providing a pin 21 that can be inserted and removed over 7a and 17b,
The support bracket 20A is configured so as to be supported by being connected to the input pulley 16. After preliminarily assembling the mowing pretreatment unit 4, both support brackets 20A and 20B are connected to the support base 18 on the side of the machine frame 2, and this connection work is performed as follows.

The first support bracket 20A located on the input pulley 16 side is connected to and supported by the input pulley 16 via the pin 21 as described above, and is set in a sideways posture.
Bevel gears 21 and 22 are interposed between the drive shaft 19 and the drive shaft 23 for the raising device 10.
Since the resistance from the pulling device 10 is added to 9, the input pulley 16 does not rotate together with the driving shaft 19 at the weight of the first support bracket 20A, and thus the first support bracket 20A has the above-mentioned structure. The sideways posture does not collapse. With the operator positioned on the side of the second support bracket 20B located on the side opposite to the input pulley 16, the operator operates one hand of a hoist (not shown) that suspends and supports the mowing pretreatment unit 4, While the stud bolt 24 is inserted into the elongated second bolt insertion hole 27 of the first support bracket 20A, the first support bracket 20A is placed on the support base 18, and in parallel with this work, The same operator uses the other hand to move the second rotary shaft support bracket 20B on the front side.
The second support bracket 2 while holding the sideways posture.
The second support bracket 20B is placed on the support base 18 in a state where the stud bolt 24 is inserted through the second bolt insertion hole 27 having a long hole shape of 0B. As a result, both support brackets 2
The positions of 0A and 20B with respect to the support base 18 are determined. By making the second bolt insertion hole 27 into an elongated shape as described above,
For example, the first or second support bracket 20A, 20B
Is slightly tilted with respect to the support 18 in a side view, the second
The stud bolt 24 can be inserted into the bolt insertion hole 27. In this way, the support brackets 20A,
It is intended to facilitate the positioning of 20B with respect to the mowing section support base 18. A bolt 28 is inserted and screwed from the first bolt insertion hole 26 to the first nut 25, and the stud bolt 24 is attached to the second bolt.
The nut 29 is screwed and fastened. The pin 27 is pulled out from both pin insertion holes 27a and 27b to release the connection support of the first support bracket 20A to the input pulley 16.

As shown in FIGS. 4 and 6, a swing frame 30 pivotally supported by a pair of left and right mowing section support bases 18 so as to be vertically swingable around a horizontal axis Q, and the swing frame 30.
With the hydraulic cylinder 3 for driving and swinging the
An elevating mechanism A for driving and elevating is configured. The swing frame 30 includes a portal pipe 30c in which a left and right long pressing action portion 30a that contacts the main frame 9 from below and left and right arm portions 30b and 30b are integrally formed, and a fulcrum pipe 3 are provided.
0d, the gate-shaped pipe 30c is attached to the fulcrum pipe 30d in a state of being offset to the left side, and the main frame of the cutting pretreatment unit 4 is within the left-right range of the gate-shaped pipe 30c. 9 is configured to be movable laterally, and the sliding contact reinforcing member 3 is provided on the lower surface of the pressing portion 30a.
1 is attached.

Piston rod 3a of the hydraulic cylinder 3
The tip portion is pivotally supported by a U-shaped mounting bracket 32 fixed to the pressing action portion 30a, and is also screwed to the lower surface of the mounting bracket 32.
3, and a contact member 34 capable of contacting the stopper disc 33 is fixed to the main body 3b of the hydraulic cylinder 3.
That is, the contact limit between the contact member 34 and the stopper disk 33 determines the shortening limit of the hydraulic cylinder 3, that is, the lower limit of the cutting unit 4.

Then, the lateral feed member 35 which is engaged with the main frame 9 and moves left and right integrally with the main frame 9, and the screw shaft 3 which is installed over the left and right arm portions 30b in a state of being screwed to the lateral feed member 35.
6 and a geared motor 3 that drives and rotates the screw shaft 36.
By including 7, the lateral feed mechanism C for forcibly laterally sliding the main frame 9, that is, the cutting pretreatment unit 4 is configured. A geared motor 37 is attached to a bracket 30e of an arm portion 30b that pivotally supports the left side of the screw shaft 36, and bar members 38 that prevent the lateral feed member 35 from rotating are fixed to the left and right arm portions 30b. The bar member 38 also serves as a reinforcing member that contributes to the improvement of strength and rigidity of the swing frame 30.

The load of the main frame 9 is always applied to the pressing action portion 30a so that the load is not applied to the screw shaft 36, so that the transverse feed member 3 having a substantially U-shape in a front view is provided.
The bottom portion 35a of No. 5 and the lower surface of the main frame 9 are set to have a vertical gap even when the two are closest to each other. Since the lateral feed member 35 is prevented from rotating by the bar member 38, the bottom end portion 3 before and after the lateral feed member 35 is rotated when the screw shaft 36 is driven to rotate between forward rotation and reverse rotation.
5f and the lower surface of the main frame 9 do not come into contact with each other, so that the collision noise is not generated. Then, a horizontal bar-shaped main frame regulating member 39 is installed over the left and right arm portions 30b via a pair of left and right support brackets 40 in a state where a gap is formed between the main frame 9 and the upper surface of the main frame 9, and, for example, this combine is performed. The loaded truck is configured to prevent the main frame 9 from being largely lifted from the pressing action portion 30a when the truck bounces during traveling.

[Brief description of drawings]

1] Overall side view of combine

FIG. 2 is a side view showing a pre-cutting processing unit.

FIG. 3 is a side view showing a base portion of the pre-mowing processing unit.

FIG. 4 is a plan view showing the structure of a horizontal slide section of the pre-mowing processing section.

FIG. 5 is a cross-sectional view showing a base portion of a transmission system to a pre-cutting processing section.

FIG. 6 is a side view showing a lateral slide portion structure of the reaping portion.

[FIG. 7] (a) Partially cutaway side view showing the bolt connection structure between the support bracket and the mowing part support base. (B) Partially cutaway plan view showing the bolt connection structure between the support bracket and the mowing part support base.

[Explanation of symbols]

2 airframe 4 Mowing pretreatment section 10a Movable part of pre-cutting section 16 input pulley 17 pin insertion hole 18 Support 19 rotation axis 20A, 20B rotating shaft support bracket 21 pin

Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) A01D 67/00 A01D 41/02

Claims (2)

(57) [Claims] 1. A vertical swing fulcrum of the pre-mowing treatment section ,
A pair of left and right rotary shaft support brackets that are rotatably fitted to a horizontal rotary shaft that is interlockingly connected to the mowing pretreatment unit is bolted to a support stand that is erected on the front of the machine frame, The rotary shaft is a combine that is configured to be capable of transmitting power to the movable part of the pre-mowing processing unit in cooperation with the drive unit via an input pulley provided at one end thereof, and to the input pulley side. A combine comprising a rotating shaft support bracket located in a swingable state and connected to and supported by the input pulley. 2. A rotary shaft support bracket located on the side of the input pulley and a pin insertion hole are respectively formed in the input pulley and a pin which can be inserted / removed over both pin insertion holes is provided to mount the rotary shaft support bracket. The combine according to claim 1, wherein the combine is configured so that it can be connected to and supported by the input pulley.