JPS62227879A - Boarding floor support device for tractor - Google Patents

Abstract

PURPOSE:To prevent a boarding floor from falling into an instability condition due to inertia during braking or the like, by actuating a limiting device through a linkage device when a control pedal is operated during running to limit the resilient effect of a damper supporting the boarding floor. CONSTITUTION:A damper 2 is arranged on the lower surface of a boarding floor 1 through the intermediary of a coupling member 21. Further, the extension of a support shaft 15 outward of a nut 20 in the damper 2 is provided slidably thereon with a limiting member 23 in a limiting device 3 having therein a groove 22 adapted to receive an outer ring 18, and a retaining ring 24 and a spring 25 are provided to the limiting member 23. Further, there is provided an actuator for sliding the limiting member 23 to allow the outer ring 18 to be fitted into the groove 22, and the actuator is wired to a switch for energizing the actuator in association with the downward turn of a control pedal so that a linkage device is constituted. Thereby the outer ring 18 and the boarding floor 1 are made to be integral with a vehicle body 8 by means of the limiting member 23, the support shaft 15 and the attaching member 16 in order to limit the resilient effect of a resilient member 17 when the control pedal is operated.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a tractor riding floor support device.

Problems to be Solved by the Prior Art and the Invention In a tractor that is equipped with a shock absorber on the passenger's boarding floor to alleviate machine body vibration and vertical movement during running, When operating pedals for brakes, clutches, etc. while driving at high speeds on the road, the passenger floor, which is supported by a shock absorber due to the inertia of the cockpit on the passenger floor, the driver, etc., may swing or move downward due to the elastic effect of the shock absorber. Due to the large running resistance, especially in fields, sudden braking may occur even when the clutch lever is operated, and as this phenomenon increases, there is a risk of causing discomfort to the operator. There is.

Means for Solving the Problems This invention provides a regulating device (3) for regulating the elastic effect of the shock absorbing device (2) in the shock absorbing device (2) that supports the boarding floor (1) for passengers. Also, the boarding floor (1
) When operating the operating pedal (4) of the brake or clutch, etc. on the brake or clutch, the interlocking device (5) interlocks to operate the regulating device (3) in a restricted manner, the operating pedal (4) and the regulating device (3)
A tractor riding floor support device is provided between the tractor and the tractor.

Operation and effect of the invention When the operating pedal (4) of the brake, clutch, etc. is operated, the shock absorber (2) supporting the boarding floor (1)
The elastic effect is regulated by the regulating device (3) through the interlocking device (5), and when the operation pedal (4) is released, the damping device 2) controls the regulating device (2) through the interlocking device (5). 3) is lifted, so the elastic effect is restored.

Due to this action, even if the tractor suddenly brakes by operating the operating pedal (4) while driving, the elastic effect of the shock absorber (2) is restricted, so the boarding floor (1) is Since there is no phenomenon of the vehicle being swayed or pushed downward due to the inertia of the passenger, etc., there is no risk of causing discomfort to the operator.

Embodiment In the example in Figure 1, a pair of left and right front rings (6) (6
) and a pair of left and right rear wheels (71 (71) at the rear) are mounted on the vehicle body (8), and on the front part of the vehicle body (8) is a bonnet (9) containing a prime mover, a storage battery, etc. Also, at the rear end of this bonnet (9), there is provided a meter panel section (10) in which meters, switches, etc. are arranged, and furthermore, at the bottom of this meter panel section (10), a control handle (11) is provided. A shaft-mounted handle post (71) is installed diagonally, and the left and right rear wheels (71 (7)
) A pair of left and right fenders covering the inside and upper sides of each f+
3] (131 is provided.

On both left and right sides of the vehicle body (8) near the rear end of the bonnet I-(91) and on both left and right sides of the rear of the vehicle body (8), there are support parts (141 (141F+41 (1=l)) having upper surfaces.
A plate-shaped mounting member (1ω) having a support pin (19) protruding outward from the upper end is connected to the upper surface of the support portion (17Il), and a plate-shaped mounting member (1ω) having a support pin (19 teeth,
A cylindrical elastic body (1) and a shock absorber (2) consisting of an outer ring (IIll) on the outer periphery and an inner ring (1) on the inner periphery are fitted, and the side end of this inner ring (191) is fitted. Natsu 1
Conclude with 2 [).

The front left and right shock absorbers (2) (From the upper side of 21 to the upper side of the rear left and right shock absorbers 421 + 21, each coupling member 1211 G! 112 I is connected to each shock absorber f21 F21 (2) (2)) A passenger boarding floor (1) connected via (211) is provided, and this boarding floor (
1) A driver's seat (21) is provided at the upper rear part, and a brake pedal (21) is provided at the bottom of the meter panel section (10) to brake the tractor by rotating it downward.
4).

Each of the above-mentioned shock absorbers (21 (21F21 F21 spindle FI)
5) (Is) (Is) (Is) or the front left and right support shafts (Is) tlsl are extended to the outside of the nut 12 [), and the extensions of these support shafts Is) (151) are
A ring-shaped groove (23) that fits into the side end of the outer ring (19)
The regulating body (23) of the regulating device (3) having the above-mentioned regulation device (3) is provided to be slidable, and the extension part of this support shaft (Is) (151) is provided with a wreath Q. ), and a spring 125 that biases the regulating body (23 in the direction of the stop 1241).

In addition, the actuating body that slides the regulating body (23) and fits the side end of the outer ring (11) into the groove (2δ) may be configured such that the regulating body (23 is configured as an electromagnet) so as to be electrically actuable. ,
A motor solenoid or the like is used, and above the brake pedal (4) and the arm part 12e, there is a switch that is energized by the downward rotation of the arm part (2e).
27], and these actuating bodies and switches (n) are connected to the storage battery to form an interlocking device (5).

Note that the upper part is a gear lever that switches the vehicle speed between high speed and low speed.

Next, the effect will be explained. The operator on the boarding floor (1) (upper cockpit) absorbs the vibrations and vertical movements caused by the running of the tractor through the boarding floor (11, upper cockpit 82+1).
It is possible to maneuver while being relaxed by the elastic effect of each shock absorber (2), and when the brake pedal (・1) is rotated downward, the switch (υ) is energized to operate the actuating body, and the regulating body (23 By fitting the groove part (23 to the outer @ (la side end part), this outer @ (18
1) consists of a regulator (a), a support shaft (19), and a mounting member (16).
), the elastic body (I
The elastic effect of ``A'' will be eliminated and the tractor will be braked in this state.

When the brake pedal (4) is rotated upwards, the switch (υ turns to the open side and the operation of the actuating body is stopped, and the regulating body is slid by the spring 125) due to the contact of the arm C. , the elastic effect of the elastic body (1η) is restored by separating the groove (2δ) from the outer ring (11 side end).

FIG. 3 shows another embodiment in which the outer end of the elastic body (1 force) bulges out further than the side end of the inner and outer rings (191 FIEO), and the above-mentioned support shaft (1 At one side end,
A male threaded portion 129) is provided, and this male threaded portion 29+ has a female threaded portion O1]l that is screwed into this male threaded portion (29) and a seat surface portion OD that comes into contact with the bulging portion of the elastic body (171). An adjustment lever mark is provided on the side.

When the adjustment lever is rotated, the seat (311) presses the bulge of the elastic body (171), causing the elastic body (
171 is reduced, and when the adjustment lever is rotated in the opposite direction, the pressure on the bulging portion by the seat portion OD is released, so the elastic effect of the elastic body (I force) increases.

This embodiment is intended to improve the driver's feeling especially when driving at high speeds, so for example, the above-mentioned gear shift lever 121 and the adjustment lever (support) are connected by a rod or the like so as to be interlocked, and the gear shift lever When you switch 121 to the high speed side,
It is also possible to have a configuration in which the adjustment lever lever is rotated to the side where the elastic effect decreases, and furthermore, it is possible to add another shock absorbing device with different elasticity that can engage with the aforementioned outer ring (IFI) on the aforementioned spindle flsl. The elastic effect may be changed by attaching and detaching the shock absorbing device.

[Brief explanation of drawings]

The figures show an embodiment of the invention, and Figure 1 is a side view;
FIG. 2 is a front sectional view of a portion, and FIG. 3 is a front sectional view of a portion of another embodiment. In the figure, (1) is the boarding floor, (2) is the shock absorber, (
3) indicates a regulating device, (.1) indicates an operating pedal, and (5) indicates an interlocking device.

Claims (1)

[Claims] A regulating device (3) for regulating the elastic effect of the shock absorbing device (2) is provided on the shock absorbing device (2) that supports the boarding floor (1) for passengers, and the brake or An interlocking device (5) that interlocks to regulate the regulating device (3) when an operating pedal (4) of a clutch or the like is operated.
A tractor riding floor support device provided between the operating pedal (4) and the regulating device (3).