JPH0525373Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is based on a rotary tilling device connected to the rear of a traveling machine so that it can be raised and lowered, and an ultrasonic sensor that detects the tilling depth of the rotary tilling device is attached to the rotary tilling device. ,
A first frame portion extending from the body portion of the rotary tillage device to the rear of the machine body, and a first frame portion extending in the lateral direction of the machine body, which is connected to the extending end portion of the first frame portion and has an attachment/detachment portion for a grounding body for setting tillage depth. The present invention relates to a structure of a sensor attachment part of a tiller provided with a frame for attaching a grounding body consisting of a second frame part.

[Conventional technology]

Conventionally, in the structure of the sensor attachment part of a tiller, the ultrasonic sensor was installed so as to be located at the rear end of the body of the tiller (for example,
56-114611).

[Problem that the invention attempts to solve]

Therefore, when the aircraft moves backward, the ultrasonic sensor may be damaged by colliding with an obstacle such as a ridge.

An object of the present invention is to make it possible to easily prevent the ultrasonic sensor from being damaged due to collision with an obstacle at the rear of the aircraft.

[Means for solving problems]

The characteristic configuration of the present invention is that in the above-mentioned structure of the sensor attachment part of the tiller, the attachment member of the ultrasonic sensor is connected and fixed across the first frame part and the second frame part, and the ultrasonic sensor is connected and fixed across the first frame part and the second frame part. It is attached to the mounting member at a position forward of the second frame portion, and its functions and effects are as follows.

[Effect]

In other words, by providing the ultrasonic sensor at a location ahead of the second frame portion, the second frame portion is located behind the ultrasonic sensor, and the ultrasonic sensor is prevented from coming into contact with an obstacle at the rear of the aircraft. It becomes a protector.

By connecting and fixing the attachment member of the ultrasonic sensor across the first frame part and the second frame part, the second frame part can be attached to the first frame part so that it is difficult to come off even if the second frame part collides with an obstacle. The mounting member serves as a reinforcing member that increases the connection strength with the second frame portion.

[Effect of idea]

Therefore, the protector action of the second frame part and the connection reinforcement of the mounting member make it possible to reliably avoid collisions between the ultrasonic sensor and obstacles at the rear of the aircraft, thereby effectively preventing damage to the ultrasonic sensor. Now I can do it.

Moreover, by using the attachment member of the ultrasonic sensor as a reinforcing member and using the second frame portion, which is the original member for attaching the grounding body, as a protector, reinforcement and protector members are not required. The structure could be simplified to avoid this, making it economically advantageous.

〔Example〕

As shown in FIG. 3, a hydraulic cylinder 3 is installed at the rear of a traveling aircraft that has a control section A that includes a driver's seat 1 and a control panel 2 installed in front of the driver's seat 1. A riding type tiller is constructed by connecting a rotary tiller 6 such that it can be raised and lowered via a three-point link mechanism 5 that can be raised and lowered by a pair of left and right lift arms 4, 4.

An ultrasonic sensor 7 consisting of an ultrasonic transmitter 7a and a receiver 7b for detecting the plowing depth of the rotary tiller 6 is attached to the rotary tiller 6. As shown in FIG. 4, a display mechanism 8 displays the plowing depth on a pargraph type liquid crystal display 8a based on the information detected by the ultrasonic sensor 7.
is provided on the control panel 2, and the plowing depth is displayed by lighting up the pergraph.

As shown in FIGS. 1 and 2, the rotary tilling device 6 includes a pair of left and right first frame portions 10A extending toward the rear of the rotary case 6A as a body portion of the rotary tilling device 6;
10B, and these first frame portions 10A, 10
It is equipped with a grounding body attachment frame B consisting of a second frame portion 12 in the lateral direction of the machine body connected to the extending end of B, and a grounding ring as a grounding body for setting the plowing depth as necessary. 11 is attached to a cylindrical attachment/detachment portion 12a or 12b provided at the left and right ends of the second frame portion 12 via a grounding wheel support shaft 9 so that the attachment height can be freely adjusted.

When the ultrasonic sensor 7 is attached to the rotary tiller 6, the second frame portion 12 serves as a protector for the ultrasonic sensor 7 from obstacles at the rear of the machine, as shown in FIGS. 1 to 3. The ultrasonic sensor 7 is disposed in front of the second frame portion 12, and the first
A pre-pot type mounting member 13 is connected and fixed to the frame portion 10A and the second frame portion 12, a sensor support member 14 is connected to the mounting member 13 with bolts 15, and an ultrasonic sensor is attached to the rising portion 14A of the sensor support member 14. 7 is fixed to the grounding body mounting frame B via a pair of mounting bolts 16, 16.

The rotary tillage device 6 is provided with a swingable rotary rear cover 17 and a sensor 18 that detects the tillage depth from the swing angle of the rear cover 17. Then, the rotary tiller 6 is automatically raised and lowered by the hydraulic cylinder 3 so that the detected value from the sensor 18 matches the plowing depth set value set by an operating tool (not shown) provided in the control section A. The plowing depth is configured to be operated so that the plowing depth is maintained substantially constant regardless of pitching of the traveling machine. The actual plowing depth state of the rotary tiller 6 can be confirmed by looking at the liquid crystal display 8a provided on the control panel 2 during this lifting/lowering control.

[Another example]

In the first embodiment, the detection information of the ultrasonic sensor 7 is used as information for displaying the plowing depth, but it may also be used as information for automatic plowing depth control.

Furthermore, in the embodiment described above, the ultrasonic sensor 7 is attached to a location on the outer side of the first frame portion 10A on the left side.
It may be attached to the inner side of the frame portion 10B, or it may be attached to the inner side and the outer side of the first frame portion 10B on the right side.

[Brief explanation of drawings]

The drawings show an embodiment of the structure of the sensor attachment part of a power tiller according to the present invention, FIG. 1 is a plan view showing the structure of the sensor attachment part, FIG. FIG. 4 is a side view of the rear part of the type cultivator, and FIG. 4 is a plan view of the display mechanism. 6... Rotary tillage device, 6A... Airframe part,
7... Ultrasonic sensor, 10A, 10B... First frame portion, 11... Ground body for setting plowing depth, 12...
...Second frame portion, 12a, 12b...Boss portion, 13...Mounting member, B...Grounding body mounting frame.

Claims (1)

[Scope of utility model registration request] An ultrasonic sensor 7 for detecting the plowing depth of the rotary tillage device 6 is attached to a rotary tillage device 6 connected to the rear of the traveling machine so as to be able to be raised and lowered, and an ultrasonic sensor 7 is attached to the rotary tillage device 6, which extends from the body portion 6A of the rotary tillage device 6 to the rear of the machine. The first frame portions 10A and 10B taken out,
A second frame in the lateral direction of the machine is connected to the extending end portions of the first frame portions 10A, 10B and has attachment/detachment portions 12a, 12b for the plowing depth setting grounding bodies 11, 11.
A structure of a sensor attachment part of a cultivator including a frame B for attaching a ground body consisting of a frame portion 12, wherein the attachment member 13 of the ultrasonic sensor 7 is attached to the first frame portions 10A, 10B and the second frame portion. 12, and the ultrasonic sensor 7 is attached to the attachment member 13 at a position forward of the second frame portion 12.