JP2005198547A - Soil crushing apparatus to be mounted on tractor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a soil crushing apparatus which is mounted on a tractor and has wide operation width, with which change in weight balance in reduction in machine width is minimized and backward visibility at the time of movement and traveling is improved. <P>SOLUTION: The soil crushing apparatus has a mounting part to be mounted on a three-point link mechanism at the rear of a tractor and constitution that an input shaft to which power is transmitted from the tractor is projected forward, a transmission case body for transmitting driving power inputted from the input shaft is installed and both end part or one end of right and left crushing bodies to be driven by output from the transmission case body is expanded and contracted in the direction of the right and left machine width. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a configuration for expanding and contracting the length in the left-right direction of a soil breaking device having a wide working width.

Since the wide crushing device protrudes from the width of the tractor to be mounted at the time of transfer, it causes bothersome surroundings and is dangerous, and a configuration that can be folded in two or three has been proposed. For example, in a farm work machine having a folding mechanism for unfolding the left and right working parts around the pivot in the machine width direction of the central working part, the actuator is operated by an actuator, and at least the central working part and the left and right working parts are operated. An "agricultural working machine characterized by including a fixing device for fixing to a posture" is known. (Patent Document 1)
Japanese Patent Laid-Open No. 8-191611

  Conventionally known crushing device folds up the crush body upward and reduces the length in the width direction of the machine, so that the center of gravity moves upward and the balance when moving and traveling is disadvantageous, or when the crush body is folded up There was a problem that the view behind the tractor driver's seat was blocked.

  An object of the present invention is to minimize the change in the weight balance when the machine width is reduced, and to improve the rear visibility during traveling.

  In order to solve the above-mentioned problems, in the invention according to claim 1 of the present invention, the input part which has a mounting part to be attached to the three-point link mechanism at the rear part of the tractor at the center part in the left-right machine width direction and transmits power from the tractor. The transmission case body that projects the shaft forward and transmits the driving force input from the input shaft is provided at the center in the left-right machine width direction, and the left and right ground breaking bodies that are driven by the output from the transmission case body, and the ground breaking body In the rear part, a leveling plate for leveling mud soil crushed by the crushed body is pivotally mounted so as to be able to rotate up and down, and the crushed body has a structure that can be expanded and contracted in the left-right machine width direction.

  In order to solve the above-mentioned problems, in the invention described in claim 2 of the present invention, in the invention described in claim 1, the crushed body is composed of an outer rotor and an inner rotor for finely stirring and stirring mud, When expanding and contracting in the left-right machine width direction, the inner rotor is inserted inside the outer rotor, and the crushed soil is superposed and expanded and contracted.

  According to a third aspect of the present invention, in the invention according to any one of the first and second aspects, the crushed body is attached to a tractor whose left and right ends or one end can be expanded and contracted. Is provided.

  With the above configuration, the crushed body expands and contracts in the left-right machine width direction, so there is almost no change in the center of gravity when viewed from the side of the crushed device, and the weight balance when mounted on the tractor is good. Therefore, the rear view from the tractor driver's seat is good, and there is little space for storage.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a ground breaking apparatus embodying the present invention, and FIG. 2 is a cross-sectional view of a stretchable portion of the ground ground body.

  In FIG. 1, although not shown by the lower pin 11 and the top bracket 12, the tractor is attached to a three-point link at the rear of the tractor, and power is transmitted from the tractor PTO shaft to the input shaft 21. Driven.

  A first frame 31 is provided on the upper left and right sides of the transmission case body 2, and a second frame 32 is slidably inserted into the first frame 31. A side plate 33 is attached to the other end to attach the second upper surface cover 43 b and the crushed soil. It supports one end of the body 4. The upper surface of the ground breaking body 4 is covered with a first upper surface cover 43a and a second upper surface cover 43b supported by the first frame 31, and the first upper surface cover 43a and the second upper surface cover 43b are installed so as to overlap each other. It is slidable by the guide 43c and has a structure that does not interfere even when the crushed clay 4 expands and contracts.

  The leveling body 44 provided at the rear portion of the ground breaking body 4 is pivotally attached to the first upper surface cover 43a so as to be rotatable up and down. The leveling body 44 includes a first leveling plate 44a, a second leveling plate 44b, and a second leveling plate 44b. 1 side flat plate 45a and 2nd side flat plate 45b are comprised, the 2nd flat plate 44b can be rotated up and down to the 1st flat plate 44a, and the 2nd side flat plate 45b can be turned up and down to the 1st side flat plate 45a, respectively. It is pivotally attached to.

  Further, the first side flat plate 45a is provided so as to be rotatable in the left-right machine width direction with the rotation pin 46 at the end of the first flat plate 44a as a fulcrum. In the folded state, the first lock pin 44c can be fixed, and when the ground breaking body 4 is expanded and contracted, the first side flat plate 45a is folded and expanded and contracted.

  The second flat plate 44b and the second side flat plate 45b are fixed by the second lock pin 45c and operate together when they rotate up and down.

  Expansion and contraction of the crushed soil body 4 is performed by an expansion and contraction operation of the cylinder 5 connected to the first frame 31 and the second frame 32. When the cylinder 5 is expanded and contracted, the second frame 32 is inserted into and slides on the first frame 31, and the second upper surface cover 43b fixed to the side plate 33 attached to the other end of the second frame 32 is the first upper surface cover 43b. Superposed on the cover 43a and slid, the inner rotor 42 of the crushed clay 4 is fitted into the outer rotor 41 and expands and contracts.

  In FIG. 2, the power transmitted to the input shaft 21 provided in the transmission case 20 is transmitted to the bevel gear 22, and is transmitted from the drive sprocket 23 provided coaxially with the bevel gear 22 to the driven sprocket 25 by the roller chain 24. The shaft 26 is driven. The outer rotor 41 is fixedly attached to the rotor mounting flanges 27 provided on the left and right sides of the output shaft 26, and the crushed soil body 4 is driven.

  In the crushed clay 4, an outer rotor shaft 41 a formed into a hexagonal shape of the outer rotor 41 is slidably inserted into a hexagonal hole provided in the inner rotor boss 42 b of the inner rotor 42, and the outer peripheral portion of the inner rotor 42 is the outer rotor. The other end of the outer rotor 41 is attached to the transmission case body 2 side, and the other end of the inner rotor 42 is attached to a side bearing 34 attached to the side plate 33. It is supported.

The perspective view of the earth-crushing apparatus which implemented this invention Cross section of the expansion and contraction part of the crushed soil

Explanation of symbols

11 Lower pin 12 Top bracket 2 Transmission case body 20 Transmission case 21 Input shaft 22 Bevel gear 23 Drive sprocket 24 Roller chain 25 Driven sprocket 26 Output shaft 27 Rotor mounting flange 31 1st frame 32 2nd frame 33 Side plate 34 Side bearing 4 Crush body 41 outer rotor 41a outer rotor shaft 42 inner rotor 42b inner rotor boss 43a first upper surface cover 43b second upper surface cover 43c roller 44 leveling body 44a first flat plate 44b second flat plate 44c first lock pin 45a first side flat plate 45b Second side flat plate 45c Second lock pin 46 Rotating pin 5 Cylinder

Claims (3)

  A mounting part that is attached to the three-point link mechanism at the rear of the tractor has a central part in the left-right machine width direction, projects the input shaft that transmits power from the tractor forward, and transmits the driving force input from the input shaft The transmission case body is installed at the center in the width direction of the left and right machine, and the left and right ground crushed bodies driven by the output from the transmission case body, and the flat plate for leveling the mud ground crushed by the crushed body at the rear of the crushed body A ground breaking device mounted on a tractor, wherein the ground ground is pivotally mounted so as to be pivotable up and down, and the ground body has a structure that can be expanded and contracted in the left-right machine width direction.   The crushed body consists of an outer rotor and an inner rotor that finely agitate and agitate the mud. When the crushed body expands and contracts in the left-right machine width direction, the inner rotor is inserted inside the outer rotor, and the crushed body overlaps and expands and contracts. A soil crushing device mounted on the tractor according to claim 1. The ground breaking device is mounted on the tractor according to any one of claims 1 to 2, wherein the ground breaking body is capable of expanding and contracting both left and right ends or one end on one side.

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