JP7183900B2 - passenger work vehicle - Google Patents

Description

TECHNICAL FIELD The present invention relates to a riding work vehicle such as an agricultural tractor, and more particularly to a configuration of a gripping portion for assisting lifting.

In a conventional agricultural tractor, there is a configuration in which the lower end side of the gripping member is attached to the traveling vehicle body so as to be in a cantilevered state, and the upper end surface is brought close to the panel cover portion of the dash cover (Patent Document 1).

JP 2017-1477 A

According to the structure of Patent Document 1, the upper end of the gripping member is not connected to the vehicle body. As it is unnecessary, it does not affect the design of the dash cover, bonnet, etc., so it has the effect of not impairing the design value of the appearance.

However, since the gripping member is a long round bar bent at several points and its lower end side is attached to one side support frame plate of the front axle bracket via the mounting plate, It is necessary to ensure the strength of the gripping member itself and the mounting plate.

SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to obtain a structure for supporting a strong gripping member with a simple and inexpensive structure.

In order to solve the above problems, the present invention has taken the following technical means.

A first aspect of the present invention is a work vehicle provided with a gripping member (30) for assisting lifting and lowering, which is formed by bending a round bar, on at least one of the left and right sides of a traveling vehicle body (1),
A panel frame (28) for supporting the handle post (12a) of the steering handle (12),
The panel frame (28) has left and right frame frames (28a, 28a) with an inclined posture in which the rear upper portion is located rearward with respect to the front lower portion,
The left and right frames (28a, 28a) form a bent portion (28d) along the longitudinal direction on the front side of the main body portion (28c),
The gripping member (30) has a substantially vertical gripping portion (30a) from the upper end, a gently sloping portion (30b) continuing from the gripping portion (30a), and an inward horizontal portion (30c).
A mounting plate (31) is provided integrally with the inward horizontal portion (30c) on the lower end side of the gripping member (30),
The mounting plate (31) comprises a first plate portion (31a) and a second plate portion (31b) welded and fixed to each other in a substantially orthogonal state to the first plate portion (31a),
The first plate portion (31a) and the second plate portion (31b) are attached to the main portion (28c) and the bent portion (28d) of the panel frame (28) to form a cantilever support state. It is a working vehicle characterized by:
A first invention related to the present invention is a working vehicle provided with a gripping member 30 for assisting lifting and lowering, which is formed by bending a round bar, on at least one of the right and left sides of the traveling vehicle body 1 . The work vehicle is characterized in that it is attached to a cantilever support state.

In a second invention related to the present invention, in the first invention related to the present invention, the gripping member 30 includes a substantially vertical gripping portion 30a from the upper end, a gently sloping portion 30b continuing from the gripping portion 30a, and an inward horizontal A mounting plate 31 is provided integrally with the inward horizontal portion 30c, and the mounting plate 31 is fastened and fixed to the panel frame 28. As shown in FIG.

According to the present invention, the strength can be improved and the cost can be reduced.
According to the first and second inventions related to the present invention, since the gripping member 30 is configured such that the lower end side thereof is attached to the panel frame 28, the length of the round bar can be shortened compared to the conventional configuration. As a result, the strength can be improved and the cost can be reduced.

1 is a side view of a tractor; FIG. It is a front view of a tractor. 1 is a plan view of a tractor; FIG. 1 is a partially sectioned side view of a tractor; FIG. Fig. 3 is a left oblique rear perspective view of the tractor with a part omitted; It is a panel frame part expansion perspective view. (A) An exploded perspective view showing a gripping member supporting structure, (B) a partially sectioned side view showing the gripping member supporting structure.

EMBODIMENT OF THE INVENTION Below, embodiment which concerns on this invention is described in detail based on drawing.

The traveling vehicle body 1 is provided with front wheels 2L and 2R (out of a pair of right and left wheels, L indicates the left side and R indicates the right side, the same applies hereinafter) and rear wheels 3L and 3R, and an engine 5 is installed in a bonnet 4 in front thereof. is mounted, and a clutch housing 6 at the rear of the engine 5, a front transmission case 7 and a rear transmission case 8 are connected to form a rigid structure. A front axle case 10 is supported on a front axle bracket 9 under the engine 5 so that the left and right sides swing up and down about an axis along the longitudinal direction. The front wheels 2L and 2R are attached to the left and right ends of the front axle case 10 so as to be steered by a steering handle 12 in front of the seat 11 of the vehicle body 1. As shown in FIG. A front axle 13 is provided in the front axle case 10 to transmit power to the front wheels.

Rear axle cases 15L and 15R are mounted on the left and right sides of the rear transmission case 8 to accommodate the rear wheel axles 14L and 14R. Rear wheels 3L, 3R are attached to the ends of the respective rear axles 14L, 14R.

A work machine (not shown) such as a rotary tillage device is connected to the rear portion of the vehicle body 1 by a three-point link mechanism 16 so as to be vertically movable. A hydraulic lift arm 18 is provided on the rear transmission case 8 for interlocking a lift rod 17 of a three-point link mechanism 16 to raise and lower the working machine.

The seat 11 is arranged above a seat floor 20 provided between the left and right rear wheel fenders 19L and 19R. A step floor 21 for passengers is connected to the lower front portion of the seat floor 20 . When the passenger gets on the passenger space S above the step floor 21 from the left side of the traveling vehicle body 1, the passenger sits on the seat 11 facing forward and operates the steering handle 12 and the pedals.

A dash cover 25 is composed of a center cover portion 22 that covers the handle post of the steering handle 12, etc., and a panel cover portion 24 that supports an operation display panel 23 having gauges. The front axle bracket 9 is formed by appropriately connecting left and right support frame plates 9L and 9R to form a framework. A partition plate (not shown) is erected to separate the passenger space S side including the seat 11 and the steering handle 12 in the front and rear direction.

A handle post 12 a of the steering handle 12 is supported by a panel frame 28 . The panel frame 28 is composed of rigid bodies such as left and right frame frames 28a, 28a which are tilted such that the rear upper portion is located behind the front lower portion, and a connecting frame 28b which connects them. It is fixedly supported by the left and right support frames 9L and 9R. A power steering control valve 29 is attached to the connecting frame 28b. The control valve 29 is interlocked with the steering shaft 12b of the steering handle 12 to switch the oil passage. (not shown) to control the supply and discharge of pressurized oil to achieve a desired steering direction.

Reference numeral 38 denotes a safety frame that protects the passenger in the passenger space S, and reference numeral 39 denotes a clutch pedal.

A gripping member 30 for assisting in lifting is provided on one of the right and left sides of the dash cover 25 (the left side in the direction of movement of the vehicle body in the figure). Specifically, a long round bar is bent at several points to form a substantially vertical gripping portion 30a from the upper end, followed by a gently sloping portion 30b, and an inward horizontal portion 30c. A mounting plate 31 is welded and fixed to the inner part of the . That is, the mounting plate 31 is composed of a first plate portion 31a and a second plate portion 31b which are welded and fixed to each other perpendicularly to the first plate portion 31a. The second plate portion 31b is provided with bolt insertion holes 31e, 31e at two upper and lower locations. Thus, the inward horizontal portion 30b of the gripping member 30 is joined to the curved portion 31c for a predetermined length on the base end side, and the base end face is brought into contact with the second plate portion 31b to be rigidly connected by welding.

As described above, the gripping member 30 integrated with the plate portion 31 is connected to one side (the left side in the drawing) of the panel frame 28 , that is, to the left side frame 28 a of the panel frame 28 . The left and right frames 28a are formed with bent portions 28d and 28e along the longitudinal direction in the front and rear of the main body portion 28c to form a reinforcement structure, and the bolt insertion holes 31d and 31d of the first plate portion 31a are bent to the left frame 28a. The bolts 32a, 32a are fastened by matching the bolt insertion holes 28f, 28f formed in the portion 28d, and the bolt insertion holes 31e, 31e of the second plate portion 31b are inserted into the bolt insertion holes formed in the main portion 28c of the left frame 28a. 28g, 28g are matched and bolts 32b, 32b are tightened.

The upper end of the gripping member 30 is not attached, and only the lower end side is attached to the panel frame 28 in a so-called cantilevered state. The upper end side of the gripping member 30 is brought close to the side of the panel cover portion 24 formed so that the portion of the dash cover 25 to which the operation display panel 23 is mounted has a raised shape. are placed.

An auxiliary step 36 is provided on the side of the step floor 21 for passengers (on the left side in the figure) to make it easier to ascend and descend the step floor 21 . The auxiliary step 36 is formed by extending a prism-shaped horizontal beam member having one end connected to the vehicle body side and bending it downward. An auxiliary step 36 can be configured.

The auxiliary step 36 is positioned on the outer side of the vehicle body with respect to the gripping member 30 . That is, the vertically descending portion 30b of the gripping member 30 is positioned between the side surface of the bonnet 4 and the auxiliary step 36 when viewed from the front.

When boarding the passenger space S of the vehicle body 1, grasp the upper part of the grasping member 30 with the left hand, step on the auxiliary step 36 with the left foot or right foot, raise the upper body while pulling the grasping member 30 with the left hand, and lift the right foot or the right foot. The left foot is placed on the step floor 21 to get on. At this time, in order to prevent the upper body from swaying, a gripping arm 37 provided on the upper surface of the left fender 19L can be gripped so that the rider can ride the vehicle more stably. When getting off the vehicle, the opposite operation is performed.

Since the upper end side of the gripping member 30 is not connected to the vehicle body 1, the gripping operation can be performed quickly without restrictions such as contact with the connecting member when gripping, thereby preventing the upper body from unexpectedly becoming unstable. can.

The gripping arm 37 on the left fender 19L is provided on the upper surface so as to be elongated in the front-rear direction. When ascending or descending, the user can stably get on or off the vehicle without inclining the upper body to the left or right.

1 traveling vehicle body 28 panel frame 30 gripping member 30a upper end gripping portion 30b gently sloping portion 30c inward horizontal portion 31 mounting plate

Claims (1)

A work vehicle provided with a lifting assist gripping member (30) formed by bending a round bar on at least one of the left and right sides of a traveling vehicle body (1),
A panel frame (28) for supporting the handle post (12a) of the steering handle (12),
The panel frame (28) has left and right frame frames (28a, 28a) with an inclined posture in which the rear upper portion is located rearward with respect to the front lower portion,
The left and right frames (28a, 28a) form a bent portion (28d) along the longitudinal direction on the front side of the main body portion (28c),
The gripping member (30) has a substantially vertical gripping portion (30a) from the upper end, a gently sloping portion (30b) continuing from the gripping portion (30a), and an inward horizontal portion (30c).
A mounting plate (31) is provided integrally with the inward horizontal portion (30c) on the lower end side of the gripping member (30),
The mounting plate (31) comprises a first plate portion (31a) and a second plate portion (31b) welded and fixed to each other in a substantially orthogonal state to the first plate portion (31a),
The first plate portion (31a) and the second plate portion (31b) are attached to the main portion (28c) and the bent portion (28d) of the panel frame (28) to form a cantilever support state. A work vehicle characterized by:

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