JPH0529304U - Work machine harness cable connector structure - Google Patents

Abstract

(57) [Summary] [Purpose] To automatically connect / disconnect a harness cable that connects a control unit mounted on a tractor and a sensor mounted on a working unit. [Structure] The work unit 2 is provided behind the tractor 1 with a hitch device 4
And a control unit C for controlling the posture of the working unit 2 is arranged on the tractor 1, while a sensor for detecting the posture of the working unit 2 is attached to the working unit 2, and the control unit C is equipped with a sensor. In the working machine in which the harness cable 55 is connected to the tractor side hitch portion 42 and the working portion side hitch portion 43 forming the hitch device 4, the tractor side connected to the control portion C via the harness cable 55, respectively. Connector 56
And the working unit side connector 57 connected to the above sensor via the harness cable 55, so that both connectors 56, 57 can be connected / disconnected in conjunction with the connection / disconnection operation of both hitch parts 42, 43. thing.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a harness cable connector structure for a working machine.

[0002]

[Prior Art]

 Conventionally, as one form of working machine, a cultivating device as a working unit is detachably connected to the rear of the tractor by a hitch device, and a control unit for controlling the posture of the cultivating device is arranged on the tractor, while By attaching a sensor that detects the posture of the tiller to the control unit and connecting the sensor to the control unit via a harness cable, the posture of the tiller can be controlled to ensure the tilling work. ing.

The harness cable is provided with a coupler for connection in the middle of the harness cable, and along with the work of connecting or separating the tiller to or from the tractor, the harness cable is used to connect the harness cable from the middle of the harness cable. It is possible to connect and disconnect.

[0004]

[Problems to be solved by the device]

 However, the harness cable connection coupler described above requires manual connection and disconnection, so the tiller is separated via the hitch device while forgetting to separate the connection coupler. Due to this, the harness cable could be cut or damaged.

In addition, there is a problem in that the connecting work of the connecting coupler is forgotten when the tiller is connected to the tractor.

[0006]

[Means for Solving the Problems]

 Therefore, in the present invention, the working unit is detachably connected to the rear of the tractor by a hitch device, and the tractor is provided with a control unit for controlling the posture of the working unit, while the working unit detects the posture of the working unit. In a work machine in which a sensor is attached and the sensor is connected to the control unit via a harness cable, the tractor side hitch section and the working section side hitch section that form the hitch device are connected to the control section via a harness cable. The connector on the tractor side and the connector on the working side connected to the above sensor via a harness cable are attached so that both connectors can be connected / disconnected in conjunction with the connection / disconnection operation of both hitch parts. It is intended to provide a harness cable connector structure for a working machine.

[0007]

[Action]

 For example, when performing plowing work, a plowing device as a working unit is connected to the rear of the tractor by a hitch device, and the plowing device is plunged while the tractor is being pulled by the tractor to perform plowing work. At this time, the sensor attached to the cultivator detects the posture of the cultivator (for example, rolling inclination), inputs the detection result to the control unit arranged on the tractor, and the control unit controls the posture of the cultivator. By controlling and maintaining a constant plowing depth, good plowing work can be performed.

The hitch device is formed of a tractor-side hitch portion and a working portion-side hitch portion. The tractor-side connector connected to the control portion via a harness cable is attached to the tractor-side hitch portion while the working portion is attached. By attaching the working unit side connector that is connected to the above-mentioned sensor via the harness cable to the side hitch part and connecting both hitch parts, both connectors can be connected at the same time and both hitch parts are separated. By doing so, both connectors can be separated at the same time, and there is no need to separately connect and disconnect the harness cable connector.

[0009]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1A shows a working machine equipped with a harness cable connector structure according to the present invention. The working machine A has a cultivating device 2 as a working unit at the rear of the tractor 1 and a lifting link mechanism 3 and The hitch device 4 is connected so as to be able to move up and down and detachably.

The tractor 1 has rear wheels 6 and 6 mounted on the left and right sides of a rear transmission case 5, a hydraulic case 7 is mounted on the upper side of the case 5, and lift arms 8 and 6 are mounted on the left and right side walls of the hydraulic case 7. 8 is projected. 9 is a fender, 10 is a top link connecting bracket, and 11 is a power take-off shaft.

Between the left and right fenders 9, a control unit C forming a part of a horizontal control device 13 described later and a tilt angle sensor 14 of the main unit for detecting the tilt angle of the tractor 1 are arranged. ing.

As shown in FIG. 1, the cultivating apparatus 2 has a shaft case 18 installed on an upper part of a cultivating power transmission case 17, and a cultivating shaft 20 having a cultivating claw 19 attached to a peripheral wall on the lower part thereof. A gear case 21 is provided at the center of the shaft case 18, and the gear case 21 and the power takeoff shaft 11 projecting rearward from the mission case 5 of the tractor 1 are interlocked via a transmission shaft 23. 24 is a rotary cover, 25 is a rotary frame, 26 is a mast for connecting the top link, 27 is a tail wheel lifting adjustment cylinder, 28 is a rear cover, 29 is a hanger rod, and 30 is a reinforcing bracket.

The mast 26 is provided with a tilt angle detection sensor 15 for detecting a rolling tilt angle around the axis line of the tiller 2 in the front-rear direction.

As shown in FIGS. 1 and 2, the hitch device 4 includes a tractor-side hitch portion 42 and a working portion-side hitch portion 43, and the tractor-side hitch portion 42 is a gate-shaped hitch portion. Attach the upper connecting body 45 to the upper center of the hitch frame 44, attach the lower connecting bodies 46 and 46 to the lower left and right sides, respectively, and horizontally mount the clutch mounting plate 47 between the lower portions of the hitch frame 44. The mounting plate 47 is provided with a clutch 48 for connecting the transmission shaft.

On the other hand, the working unit side hitch part 43 has an upper connecting pin 49 protruding from the upper end of the mast 26, and lower connecting pins 50 protruding from the left and right brackets 32, 32 respectively. The connecting pin 49 can be connected to the upper connecting body 45, and the lower connecting pins 50, 50 can be connected to the lower connecting bodies 46, 46.

When the tractor side hitch part 42 and the working part side hitch part 43 are connected, as shown in FIGS. 2 and 3, between the mast 26 and the left and right lower connecting pins 50, 50. The intervening left and right reinforcing brackets 30, 30 and the hitch frame 44 are arranged to face each other in the front-rear direction.

The elevating link mechanism 3 connects the top link connecting bracket 10 projecting from the upper part of the rear wall of the mission case 6 and the upper connecting body 45 provided on the tractor side hitch portion 42 by the top link 36, and The lower left and right side walls of the case 6 and the lower left and right connecting bodies 46, 46 provided on the hitch-side hitch 42 are connected by a pair of left and right lower links 37, 37, and the tip of the left lift arm 8 and the left lower link. The middle part of 37 is linked by a lift link 38, and the tip of the right lift arm 8 and the lower link 3 on the right side are connected.
7 is connected to the middle part by a horizontal control hydraulic cylinder (not shown). 40a and 40b are top link connecting pins, and 41a and 41b are lower link connecting pins.

The horizontal control device 13 is composed of the control unit C, the hydraulic cylinder for horizontal control, the tilt angle detection sensor 15 and the tilt angle sensor 14 of the present machine, and the tilt angle detection is performed on the input side of the control unit C. The sensor 15 and the tilt angle sensor 14 of this machine are connected, the hydraulic cylinder for horizontal control is connected to the output side of the control section C, and the tilt angle detection sensor 15 detects the rolling tilt angle of the tiller 2 and The machine tilt angle sensor 14 detects the rolling tilt angle of the tractor 1, inputs both detection results to the control unit C, and the control unit C sends a signal to the horizontal control hydraulic cylinder based on both detection results. By outputting and expanding and contracting the hydraulic cylinder, the tiller 2 can be held horizontally at all times.

As shown in FIG. 1, the control unit C and the inclination angle detection sensor 15 are connected by a harness cable 55, and the harness cable 55 is connected to the middle of the harness cable 55 as shown in FIGS. 2 and 3. Attach a tractor side connector 56 and a working part side connector 57 that can be connected / separated to each other, and both connectors 56 and 57 face each other when connecting the tractor side hitch part 42 and the working part side hitch part 43. Attached to the hitch frame 44 and the left reinforcing bracket 30 respectively. 31, 32 are mounting brackets and 33 are mounting bolts.

Moreover, both connectors 56 and 57 are connected at the same time when the hitch portions 42 and 43 are connected, and at the same time when the hitch portions 42 and 43 are separated.

4 to 6, 56a and 57a are connector cases, 56b and 57b are terminal covers, 56c and 57c are terminals, 56d and 57d are stopper bolts, 57e is a terminal cover sliding guide pin, and 60 is a leaf spring. , 57f are leaf spring mounting bolts.

As described above, since the connector 56 and the connector 57 can be connected and separated in conjunction with the connection and disconnection work of the tractor side hitch part 42 and the working part side hitch part 43. It is possible to reliably prevent problems such as forgetting to connect / separate the harness cable 55, and prevent the harness cable 55 from being cut or damaged.

Moreover, since the terminal cover 57b of the working unit side connector 57 is movable forward and backward along the terminal cover sliding guide pin 57e, and is elastically biased in the forward direction by the leaf spring 60, When connecting the work unit side hitch part 43 to the tractor side hitch part 42 side around the lower side connecting pins 50, 50, connect the terminal 56c of the tractor side connector 56 to the terminal of the work unit side connector 57. The 57c can be securely connected in the pressure contact state.

FIG. 7 shows a connector mounting structure as another embodiment. The tractor side connector 56 is mounted on the upper side of the hitch frame 44 via the bracket 58, and the working section side connector 57 is mounted on the connector 56. The harness cable 55, which is connected / disconnected freely and is connected to the connector 57, is wired so as to crawl right above the reinforcing bracket 33, and is fixed to the mast 26 via the fixing bracket 61 in the middle of the wiring.

In this way, by separating the cultivating device 2 from the tractor 1 by the hitch device 4, the working unit side connector 57 can be separated from the tractor side connector 56.

FIG. 8 shows a mounting structure of a harness cable 55 as another embodiment, in which the working unit side connector 57 is mounted on the mast 26, and the tractor side connector 56 is connected to the connector 57. The harness cable 55, which is detachably connected and is connected to the connector 56, can be wound up by the harness take-up reel 59 attached to the fender 9 of the tractor 1, and the harness cable 55 can be spring (not shown). ) Always pulls to the winding side. 62 is a locking hook, and 63 is a locking hook receiving portion.

In this way, by separating the tractor side connector 56 from the working section side connector 57 and unlocking the locking hook 62 from the locking hook receiving portion 63, the harness cable is pulled by the pulling force of the spring. It is possible to wind 55 around the harness take-up reel 59.

[0029]

【effect】

 According to the present invention, the following effects can be obtained.

That is, the sensor and the control unit are connected by a harness cable, and the middle portion of the harness cable can be connected / disconnected by the tractor side connector and the working unit side connector, and each connector forms a hitch device. It is attached to the hitch part on the tractor side and the hitch part on the operating part side, and both connectors can be connected / disconnected in conjunction with the connection / disconnection operation of both hitch parts, so forgetting to connect / disconnect the harness cable, etc. It is possible to surely prevent the occurrence of the trouble of, and also to prevent the harness cable from being cut or damaged.

[Brief description of drawings]

FIG. 1 is a side view of a working machine having a harness cable connector structure according to the present invention.

FIG. 2 is a rear view of the hitch device.

FIG. 3 is an enlarged side view of the main part.

FIG. 4 is a sectional side view of the connector.

FIG. 5 is a sectional plan view of the connector.

FIG. 6 is a front view of a working unit side connector.

FIG. 7 is an explanatory side view of a connector mounting structure as another embodiment.

FIG. 8 is an explanatory side view of a harness cable mounting structure as another embodiment.

[Explanation of symbols]

 A Working machine 1 Tractor 2 Tilling device 3 Lifting link mechanism 4 Hitch device 42 Tractor side hitch part 43 Working part side hitch part 55 Harness cable 56 Tractor side connector 57 Working part side connector

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Eiki Kamiyama 1-32, Chayamachi, Kita-ku, Osaka City, Osaka Prefecture Yanmar Diesel Co., Ltd. Within

Claims (1)

[Scope of utility model registration request] 1. A work unit 2 is detachably connected to a rear side of a tractor 1 by a hitch device 4, and a control unit C for controlling the posture of the work unit 2 is arranged on the tractor 1, while the work unit 2 is operated in the same manner. A sensor for detecting the posture of the section 2 is attached to the control section C.
In the working machine in which the sensor is connected to the control unit C via the harness cable 55, the tractor side hitch unit 42 and the working unit side hitch unit 43 forming the hitch device 4 are connected to the control unit C via the harness cable 55, respectively. Attach the tractor side connector 56 and the working unit side connector 57 connected to the above sensor via the harness cable 55 to connect / connect both the hitch parts 42 and 43.
A harness cable connector structure for working machines, characterized in that both connectors 56 and 57 can be connected and disconnected in conjunction with the separation operation.