JPH04113501U - Structure of rotary tiller in management machine - Google Patents

Abstract

(57) [Summary] (with modifications) [Purpose] A work reaction force support device installed below a work machine connected to a work vehicle via a three-point link hitch.
This allows it to be used without manual operation. [Configuration] The work reaction force support device 60 is connected to the grader 61.
and a contact block 63 that comes into pressure contact with the tire D of the work vehicle.
A double-acting hydraulic cylinder 64 is interposed between the two, and the pivots 71 and 73 that support the hydraulic cylinder 64 have a slight play. The abutment block 63 is brought into pressure contact with the tire D of the work vehicle by the expansion and contraction movement of the abutting block 64.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to the structure of a rotary tiller in a management machine.

0002

[Conventional technology]

The rotary tiller for the management machine is the same as the rotary tiller for general walk-behind tillers. In this way, a rotary shaft with multiple tilling claws is attached to the vehicle body in an interlocking manner. A tilling cover is installed horizontally at the lower end of the transmission case to be mounted, and the outside of the rotation area of the claw shaft rotary is covered with a tilling cover. - and a vertical position adjustment mechanism at the rear end of the beam extending backward from the transmission case. The control machine is equipped with a tail wheel through the Because small size and low price are required, the vertical position adjustment mechanism of the tail wheel is made using a fixing bolt. A simple structure is adopted, just loosen the and slide the tail wheel mounting shaft up and down. In addition, in order to increase versatility, many models have rotary claw shafts that can be rotated forward and backward. When reversing the claw shaft rotary, rotate the tilling cover forward from its normal position. Then, change the cover position and remove the tilled soil that is thrown up by reversing (up-cut rotation). However, the conventional tillage cover does not cover the tailwheel. It was configured to rotate back and forth independently, regardless of the vertical position adjustment mechanism.

0003

[Problem that the idea aims to solve]

In the conventional rotary tillage section for management machines, the fixing bolts are loosely tightened. Did you adjust the vertical position of the tail wheel, that is, the plowing depth, by moving the tail wheel mounting shaft up and down? Although it is possible to make large, general adjustments to the plowing depth, it is difficult to make fine adjustments. In addition, the front and rear direction of the tilling cover due to the forward and reverse rotation of the claw shaft rotary can be controlled by This was done separately from the lower position adjustment, so the turning structure of the tilling cover was unnecessary. Another drawback was that it was cumbersome to operate. This invention focuses on the above-mentioned difficulties in conventional methods and solves them. This was carried out for the purpose of Allows fine tilling depth adjustment settings, and allows the tilling cover to be adjusted in the forward and reverse directions of the claw shaft rotary. It provides an improved rotary tiller structure that allows easy forward and backward turning. be.

0004

[Means to solve the problem]

In order to achieve the above object, the rotary tiller in the present invention has a transmission case. The tilling cover that covers the outside of the rotation area of the claw shaft rotary supported at the lower end of the claw The tilling cover is provided rotatably around the axis of the rotary shaft, and A cover rotation mechanism for changing the position of the tilling cover is installed between the extending beam and the tilling cover. In addition, a tail wheel is attached to the rear end of the tilling cover via a vertical position adjustment mechanism. It is.

[0005]

[Effect]

When performing tillage work with the rotary tiller constructed as described above, the desired tillage depth can be achieved. To roughly adjust the position, operate the vertical position adjustment mechanism to raise and lower the tail wheel. After that, if you operate the cover rotation mechanism, it will move back and forth around the axis of the rotary claw shaft. The vertical position adjustment mechanism and tail wheel provided on the rotating tillage cover move in the vertical direction. Fine plowing depth settings are made. Therefore, while setting the tilling depth and working as described above, it is necessary to change the tilling depth. If necessary, the plowing depth can be easily and minutely changed by operating only the cover rotation mechanism. You can get it. Also, when working with the claw shaft rotary reversed (up-cut rotation), the tillage power should be If you move the cover rotation mechanism significantly so that the bar turns from its normal position to the front, this As a result, the tilling cover will rotate to the specified position when the claw shaft rotary reverses. This effectively covers the cultivated soil thrown up by the reverse rotation of the claw shaft rotary.

[0006]

【Example】

Next, embodiments of the present invention will be described with reference to the drawings. Figure 1 is a partially cutaway side view of a walk-behind tiller equipped with a rotary tiller according to the present invention. , Fig. 2 is an enlarged partial view of the rotary tilling section in Fig. 1, and Fig. 3 is the rotor in Fig. 2. A partially cutaway rear view of the re-tilling section, FIGS. 4 and 5 are explanations showing the mode of operation of the present invention. It is a diagram. In Figure 1, the management machine is mounted on a frame (9) extending from the mission case (8). The engine (10) is installed in the engine (10), and the power of the engine (10) is transferred to the The transmission is transmitted to the axle (11) through the transmission device, and the running wheel (12) fitted to the axle (11) is It is configured to be driven and run. And the driving operation is done by the mission case. This is done at the hand of the control handle (13) that extends rearward from the base (8). ing.

[0007] On the other hand, the rotary tilling section (R) is connected to the power take-off section (not shown in the figure) of the mission case (8). (not shown) and the tilling cover (3). , a tail wheel (7) installed at the rear end of the tilling cover via a vertical position adjustment mechanism (6); It consists of a beam (4) extending rearward from the upper end of the transmission case (1). ing.

[0008] At the lower end of the transmission case (1) is a rotary claw shaft equipped with a large number of tilling claws (14). (2) is horizontally supported horizontally. The claw shaft rotary (2) is connected to the input part of the transmission case (1) or the transmission case. - To switch and operate the forward/reverse/neutral switching transmission section configured in the space (8). Therefore, it is possible to rotate in both the forward rotation direction (A) and the reverse rotation direction (E). In addition, in the example shown in the figure, when operating the rotary claw shaft (2) in reverse, the plowing speed is It is assumed that the equipment will be replaced so that the direction of the claw (14) is reversed, but this is not correct. It can also be equipped with a tilling claw that can be used both in reverse and reverse directions. It saves you the hassle of equipment.

[0009] The tilling covers (3) are formed separately on the left and right sides of the transmission case (1). The lower end of the inner hanging wall (3a) (3a) of each tilling cover (3) (3) is connected to the claw shaft rotor. - It is attached so that it can rotate back and forth around the axis of the tally (2). The rear and rear parts of both tilling covers (3) and (3) are connected by a connecting member (15). Both are integrated, and a vertical position adjustment mechanism (6) is fixed on the back of the connecting member (15). The vertical position adjustment mechanism (6) is equipped with a tail wheel (7).

0010 The vertical position adjustment mechanism (6) includes a support tube (6a) fixed to the connecting member (15), and The tail wheel mounting shaft (6b) is inserted into the support tube (6a) so that it can move up and down, and both can be adjusted as desired. The tail wheel (7) is configured with a fastener (6c) that is fixed at the joint position, and the tail wheel (7) is fixed at the joint position. It is attached to the lower end of the shaft (6b) with a caster structure.

[0011] The beam (4) has a box-shaped cross section with an open bottom, and its front end is connected to a transmission case. The tiller cover (3) should be fixed to the top of the tiller cover (1) so as not to obstruct the rotation of the tiller cover (3). It passes above the cover (3) and extends rearward. A longitudinal screw shaft (16) is rotatably supported at the rear end of the beam (4). , Screw the female screw body (17) onto the screw shaft (16), and connect the female screw body (17) and the left and right tillers. A cover rotation mechanism (5) is provided which is connected to the bars (3) (3) by an interlocking means (18). It is being

0012 Note that the cover rotation mechanism (5) is not limited to the one shown in the figure, and can be used for any tillage force. Any other structure may be used as long as the bar can be rotated back and forth. In addition, as shown in Figure 5, the rear part of the tillage cover (3) (3) is extended in a curved manner. It is formed into a cover shape and is positioned close to the ground by operating the cover rotation mechanism (5). At the same time, the tail wheel mounting shaft (6b) of the vertical position adjustment mechanism (6) , insert the tail wheel (7) from above into the support tube (6a) with it attached, or insert the tail wheel (7) from above. If 7) can be attached to the upper end of the tail wheel attachment shaft, it can be used for leveling and leveling of fields. , plowing, etc. can be performed suitably. Also, the lower end of the tail wheel mounting shaft (6b) with the tail wheel (7) positioned above as described above. It is also convenient to use the section as a resistance rod.

0012

[Effect of the idea]

As mentioned above, the rotary tiller in the present invention is located at the lower end of the transmission case (1). A tilling cover (3) that covers the outside of the rotation area of the supported pawl shaft rotary (2) is attached to the pawl shaft. The tilling cover (3) and the transmission case are provided rotatably around the axis of the rotary (2). A cover for changing the position of the tilling cover is provided between the beam (4) extending from (1) to the rear. A rotation mechanism (5) is provided, and a vertical position adjustment mechanism (6) is provided at the rear end of the tilling cover (3). Since the tail wheel (7) is attached through the Fine plowing depth adjustments can be easily made while adjusting the plowing depth. There is an advantage that the cover can be easily turned back and forth.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway side view of a walk-behind tiller equipped with a rotary tiller according to the present invention.

FIG. 2 is an enlarged partial view of the rotary tilling section in FIG. 1;

FIG. 3 is a partially cutaway rear view of the tilling section of FIG. 2;

FIG. 4 is an explanatory diagram showing the mode of operation of the present invention.

FIG. 5 is an explanatory diagram showing the mode of operation of the present invention.

[Explanation of symbols]

1 Transmission case 2 Claw shaft rotary 3 Tillage cover 4 beam 5 Cover rotation mechanism 6 Vertical position adjustment mechanism 7 Tail wheel

Claims (1)

[Scope of utility model registration request] [Claim 1] A tilling cover (3) that covers the outside of the rotation area of the claw shaft rotary (2) supported at the lower end of the transmission case (1).
is rotatably provided around the axis of the claw shaft rotary (2), and the tilling cover (3) and the beam (4) extending rearward from the transmission case (1) are connected to each other. A cover rotation mechanism (5) for changing the position of the tilling cover is provided between the tilling covers (3) and the tilling cover (3).
A rotary tiller structure characterized in that a tail wheel (7) is attached to the rear end of the rotary tiller via a vertical position adjustment mechanism (6).