JPS5941928Y2 - tractor - Google Patents

Description

[Detailed Description of the Invention] The present invention consists of a bar 4 for attaching to both ends of the work equipment towing coupler, and a bar attachment member equipped with spherical bearings supported at two places on the left and right of the bar, so that it can be elastically deformed. A device for supporting the machine body and detecting all the traction loads of the working device based on the displacement detected by the bending deformation of the central portion of the bar, and further for connecting all the working devices different from the working device. By effectively utilizing the original structure of the tractor equipped with a pair of left and right connecting member stops,
The purpose is to increase the traction strength of the bar and both connecting members with a simple structure.

Next, embodiments of the present invention will be described based on the drawings.

At the rear of the passenger tractor 1, there is a top link 3 that can swing vertically and is attached to a case 2 for transmitting a transmission to the rear wheels, and a rigid member 4 for attaching a bar to the transmission case 2.
A bar 5 that is attached to face the left and right sides of the aircraft through the warehouse, and a lower that serves as a pair of left and right towing couplings 6, 6 that are separately attached to both left and right ends of the bar 5 and can swing up and down. The plows 7 are connected via a link so that they can be raised and lowered, and are also pivotally connected by a lift arm 9 that can be driven up and down by a hydraulic cylinder 8 and the lower rings 6.6 and the entire lift rod 9a. This is a riding-type cultivator configured so that the tillage is carried out in accordance with the amount of water, and the total tillage depth can be changed by expanding and contracting the hydraulic cylinder 8.

A load setting device A that sets a value according to the desired plowing depth of the traction load rack of the plow 7, and a device 11a that compares and discriminates all signal values from a mechanism 10 that detects all the actual traction loads of the plow 7.
A device 1 that automatically operates the control pulp vl for the lift arm cylinder 8 based on the determination result. All stages of the plow are equipped with a plow lifting and lowering control mechanism, and the traveling speed during work is kept constant. The plowing depth is automatically adjusted to achieve the desired results.

The traction load detection mechanism 10 is constructed as shown in FIG.

That is, the bar 54 is fully equipped with a spherical bearing member 12 which is an externally fitted lid on one part of the bar and a concave spherical surface which is externally fitted onto the convex spherical surface of the bearing member 12 at two places on the left and right sides of the bar. It is supported by the bar mounting member 4 through a spherical bearing 14 consisting of a body side bearing member 13 which is held by the mounting member 4.

1. Due to the sliding movement of the spherical bearing member 12 and the fuselage side bearing member 13 in both bearings 14 and 14, as the traction load of the plow I increases, the bar 5VC is bent.
Due to the force applied to both lower link attachment parts, the bar 5
is to be elastically deformed.

The tractive load of the plow 7 is increased based on the amount of displacement detected at the center of the bar due to the bending deformation of the bar 5 through a 15-karat gold contact made in contact with the left and right center portions of the bar 5 to follow the displacement thereof. This is a full-stage ponten-yon meter as a device 16 constructed as shown in FIG.

As shown in FIGS. 3 and 4, both ends of the bar 5 are 1 m long.
They are provided in a pair of left and right working device towing connecting members 17 and 17 that are separately bolted to the left and right side walls of the mission case 2 with their respective parts penetrating through them.

When a towing type transport work vehicle (not shown) is fully connected in place of the plow 7, a connecting device 18 for connecting the tow-type transport vehicle (not shown) in such a way as to be able to separate the working noise, and both the above-mentioned towing connecting members 17.1
7 and the right and left side walls of the transmission case 2 so as to be separably connected by bolts.

As shown in FIGS. 3 and 5, in each of the bar penetrating portions of the two towing connecting members 17, 17, a bar attachment member 4 for attaching the bar 5 to the transmission case 2 and a towing connecting member 170 are provided. 4 is disposed in the spherical bearing 14 so as to be fitted into both members 4, 17, and thereby,
Not only the bar mounting member 4, but also a traction connecting member 17.17 for connecting another working device, and a member connecting the bar 5 to the transmission case 2 via the spherical bearing 14. It is.

Note that the plow 7 is a rotary tiller or a trencher.
etc., and these four working devices 7 are collectively called.

Further, the two towing connecting members 17, 17 are not limited to those for a transport work vehicle, but can be changed to those for various types of work equipment.

Furthermore, the attachment of the bar attachment member 4 and the towing connection member 17 is not limited to the mission case 2, but can be changed to various body parts, and these are collectively referred to as the metal body 2.

As shown in the above embodiments, the features of the present invention include a bar 54 to be attached to both ends of the work device 7 towing coupler 6, and a spherical bearing 14 that fully supports the bar 5 at two locations on the left and right. A device 16 that is elastically and deformably supported on the body 2 by a bar mounting member 4 provided in .14, and that detects the entire traction load of the working device 7 based on the displacement detected by the flexural deformation of the central portion of the bar 5. ' and further,
A tractor provided with a pair of left and right connecting members 17.11 for connecting a working device other than the working device T,
Said connecting member 17.17! , both ends of the bar 5 are attached to the fuselage 2 with the connecting members 17 and 11 penetrating through them, and the spherical bearings 14 and li are located between the bar mounting member 4 and the connecting member 17, In addition, it is arranged so as to fit inside both members 4° 17, and this configuration provides the following effects during production.

That is, as shown in FIG. 5, each of the bar mounting member 4 and the traction connecting member 17 for attaching the bar 5 to the fuselage 2 is connected to the fuselage 2 through the full spherical bearing 14 of the other. If these members are used effectively, the connection strength to the fuselage 2 can be increased compared to connecting them to the fuselage 2 alone.
The simple improvement is to connect the left and right sides of the bar 5 separately and to arrange all the spherical bearings 14 across the bar penetrating portion and the bar mounting member 4, so that the mounting strength 4 of the bar 5 as a whole can be increased. The entire connecting structure can be obtained with a simple structure without requiring any special reinforcing means.

[Brief explanation of the drawing]

The drawings show Embodiment 2 of the tractor according to the present invention, Fig. 1 is an overall survey view of the riding cultivator, Fig. 2 is a block diagram of the plow lifting control mechanism, and Fig. 3 is a part of the traction load detection mechanism. FIG. 4 is a side view showing the attached state of the traction device for the transport work device, and FIG. 5 is a sectional view taken along the line v--2 in FIG. 4. 2... Airframe, 4... Curved bar mounting member, 5...
. . . Bar, 6 . . . Connector during traction, 7 . Curved work device, 14 . . . Spherical bearing, 16 . . . Curved load detection device, 17 .

Claims (1)

[Scope of utility model registration request] Work device 7 Traction coupling 6 Bar 5 for mounting on both ends, spherical bearing 1 supported at two places on the left and right of the bar 5
4.11-A device for elastically and deformably supporting the bar mounting member 4vc on the machine body 2 and detecting the entire traction load of the working device 7 based on the displacement detected by the bending deformation of the central portion of the bar 5. This tractor is provided with 16 bays and a pair of left and right connecting members 17 and 11 for connecting a working device other than the working device 7, the connecting members 17, 11 and both ends of the bar 5. is attached to the fuselage 2 in such a manner that it penetrates through the connecting member 17, 17', and the spherical bearing i4. i4't, the tractor is characterized by being disposed over the bar attachment member 4 and the connection member 17, and in a state of being fitted inside both the members 4, 1T.