JPH06329005A - Parking brake equipment of tractor - Google Patents

Abstract

PURPOSE:To easily mount an operation part in a parking brake equipment as a set with simple structure by providing a boss part where an assembled part is mounted on the vehicle side, and providing a tightening tool which mount the assembled part mounted on the boss part. CONSTITUTION:An assembled body 27 consists of a base plate 12 where a brake lever 13, a switch 26, a cable 14 or the like are set. One end of this assembled body 27 is mounted on a vehicle body 6 by a tightening tool 28, and the other end is mounted on a boss part 29 projecting outward from the vehicle body 6 by a tightening tool 30. The assembled body 27 is covered by a floor sheet 7, and the tool inserting ports 31 to operate the tightening tool 30 are formed to the upper and lower parts relative to the boss part 29.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a parking brake device for a tractor.

[0002]

2. Description of the Related Art A parking brake device (parking brake) in which a brake lever and a brake cam lever are interlockingly connected by a cable to warn an operator of the presence or absence of parking is proposed in Japanese Utility Model Publication No. 4-44456. ing.

[0003]

The technique disclosed in the above publication has a complicated structure because the base portion of the brake lever is formed in a bifurcated portion, and the switch and the cable are assembled integrally with the brake lever. It was troublesome. Therefore, an object of the present invention is to make it possible to easily assemble the switch, the cable and the brake lever as a set on the machine body side.

[0004]

According to the present invention, a brake lever 13 is rotatably pivotally attached to a base plate 12 mounted on the body 6 side, and the turning operation of the brake lever 13 is interlocked with the brake cam lever 11. With a cable 14,
A parking brake device for a tractor, which is equipped with a switch 26 for activating an alarm device for alerting an operator, and has the following technical means for achieving the above-mentioned object.

That is, according to the present invention, the base plate 12 is provided with the switch 26 and the cable holder 19,
An assembly 27 to be assembled with the brake lever 13 is configured, a boss portion 29 for mounting the assembly 27 is provided on the machine body 6 side, and a fastener 30 for mounting the assembly 27 mounted on the boss portion 29 is provided. It is a feature.

[0006]

The assembly 27 is attached to the boss portion 29 and the fastener 30 is attached.
The brake lever 13, the switch 26 and the cable 14 are assembled as a set by fastening.

[0007]

Embodiments of the present invention will be described in detail below with reference to the drawings. In FIG. 5, which shows the overall configuration of the tractor 1,
The tractor 1 is of a two-shaft, four-wheel type having front wheels 2 and rear wheels 3, the front wheels 2 are steering wheels, the rear wheels 3 are driven by their axles, and the left and right axles are independent brakes. The device 4 is provided.

The left and right independent braking device 4 includes a brake pedal 9 from a seat 8 mounted on a hydraulic device (machine) 6 having a lift arm 5 via a floor seat 7.
The brake cam lever 11 can be operated by operating the brake cam lever 11 via the interlocking body 10 such as a link or a wire. In the first embodiment shown in FIGS. 1 to 4, a brake lever 13 pivotally mounted on a base plate 12 attached to one side of the hydraulic device 6 is provided, and the brake lever 13 and the brake cam lever 11 are connected by a cable. 1
It is interlockingly connected with 4.

The cable 14 comprises an inner 14A and an outer 14B. One end of the inner 14A is pivotally attached to the base of the brake lever 13 via a top 15, and the other end is an interlocking shaft erected on the lower bottom of the vehicle body 1A. It is pivotally attached to one of the two arms 18 fixed to one end of 16. Further, one end of the outer 14B is attached to an L-shaped cable holder 19 welded to the base plate 12 via a screw adjusting body 20, and the other end is attached to a bracket 21 fixed to a side surface of the brake case 4A. Is installed through.

A bridge-shaped lever mounting plate 23 is fixed to the base plate 12 which is rectangular in a plan view in the vicinity of the cable holder 19 and a position separated from the cable holder 19 in a reinforced state. A base of the brake lever 13 is rotatably attached to the middle of the plate 23 about a horizontal shaft 24 as a fulcrum. The base portion of the brake lever 13 has a U-shaped cross section, is mounted so as to sandwich the lever mounting plate 23 from above, and a piece 15 is rotatably installed below the lever mounting plate 23. The bracket 2 is provided on the base plate 12 in the opposite position.
A switch 26 is provided via the switch 5.

Therefore, the base plate 12 is an assembly 27 in which the brake lever 13, the switch 26, the cable 14 and the like are set. One end of the assembly 27 is attached to the machine body 6 with a fastener 28, and the other end is the machine body 6. The fastener 30 is attached to the boss portion 29 projecting further outward. Assembly 27
Since it is covered with the floor sheet 7, a tool insertion opening 31 for operating the fastener 30 is formed in the floor sheet 7 so as to face the boss portion 29 vertically.

The lever mounting plate 23 is provided with engaging recesses 31 in a line in a circular arc centered on the horizontal shaft 24, and the engaging recesses 31 are provided with disengageable claws 32. The claw 32 is pivotally attached to an insertion end of a push rod 33 that is inserted through the brake lever 13 so as to be freely pushed and pulled, and the head button 34 of the rod 33 is pushed against the spring 35 so that the claw 32 engages with the engaging recess 31. It is further separated and is engaged by the action of the spring 35.

In FIG. 4, an interlocking shaft 16 laid across the vehicle body at the lower bottom of the vehicle body 1A is supported by a holder tube 36 and is rotatable about its axis. The protruding arm 18A and the brake cam lever 11 are interlocked by a connecting tool 37 having an elongated hole 37A, and the operating force of the brake lever 13 is applied to the cable 1 here.
4 can be transmitted to both brake cam levers 11 to brake the brake device 4, and the braking state can be maintained by engaging the claw 32 with the engaging recess 31. A return spring 37 represented by a coil spring is provided at the other end of 16.

6 and 7 show a second embodiment, in which the bracket 21 and the holder tube 36 are integrated, and the other parts are common to the first embodiment, and therefore common parts are designated by common reference numerals. . In addition, in FIG. 2, 17 indicates a blazer pipe. Further, the switch 26 turns the frame 15 when the brake lever 13 is rotated around the horizontal shaft 24 as a fulcrum.
The signal is turned on and off via a signal to transmit this signal to an alarm device such as a buzzer and a lamp to alert the operator to the on / off of the parking brake.

[0015]

As described in detail above, according to the present invention,
The operation part of the parking brake device can be easily attached to the machine body as a set and with a simple structure.

[Brief description of drawings]

FIG. 1 is a side view showing a first embodiment of the present invention.

FIG. 2 is a side view of a main part showing the first embodiment of the present invention.

FIG. 3 is a plan view of an essential part showing a first embodiment of the present invention.

FIG. 4 is a front view of the main part showing the first embodiment of the present invention.

FIG. 5 is an overall side view showing the first embodiment of the present invention.

FIG. 6 is a side view of an essential part showing a second embodiment of the present invention.

FIG. 7 is a front view of a main part showing a third embodiment of the present invention.

[Explanation of symbols]

 6 Aircraft 11 Brake Cam Lever 12 Base Plate 13 Brake Lever 14 Cable 19 Cable Holder 26 Switch 27 Assembly 29 Boss 30 Fastener

Claims (1)

[Claims] 1. A brake lever (13) is rotatably and pivotally attached to a base plate (12) attached to the body (6) side, and the brake cam lever (13) is rotated by the brake cam lever (13). With interlocking cable (14),
A switch (2 that activates an alarm device to alert the operator
6) A parking brake device for a tractor, comprising a switch (26) and a cable holder (19) on the base plate (12), and a brake lever (1).
3) and an assembly (27) to be assembled, a boss portion (29) for mounting the assembly (27) is provided on the machine body (6) side, and the assembly (27) is attached to the boss portion (29). A parking brake device for a tractor, comprising a fastener (30) for mounting.