JP2558022Y2 - Vehicle step device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a step device for a general industrial vehicle such as an agricultural or construction vehicle having a chassis type frame structure.

(B) Conventional technology In general industrial vehicles having a chassis-type frame structure, steps are often mounted directly on the upper surface of the main frame, but those in which the steps are provided above the main frame are also used. 63-108829, and Japanese Utility Model Application
There is one shown in Japanese Patent No. 77156.

(C) Problems to be solved by the present invention In the former case, the vibration of the engine is generally absorbed, so that the anti-vibration rubber is often supported on the front, rear, left and right of the upper surface of the main frame, and the position of the output shaft is increased. The propeller shaft, which is transmitted from the engine to the rear transmission, is located above the step surface, and it is extremely dangerous for the pilot to sit and operate on the seat. Could not be a flat deck.

In addition, clutch pedal required for vehicle driving control,
When placing brake pedal links and rods near the frame, the height will be near the top of the frame.If the steps are directly mounted on the top of the main frame, the links and rods will be bent to avoid interference with the steps. And the structure became complicated.

In addition, if the step is raised and raised, a sub-step is required, but if it is arranged near the main frame, the toe hits the main frame, link, rods, etc. easily when boarding with your feet I couldn't do that.

On the other hand, in the case of the latter, the main frame is provided above the propeller shaft, and the step is supported by a support member erected on the main frame via a step mounting frame. As the height increases, there is a drawback that the step support structure becomes complicated.

(D) Means for solving the problems Main frames 1, 1 'are provided on the left and right sides of the vehicle,
In a chassis-type vehicle in which main components such as an engine 18, a handle portion 20, a seat portion 21, a transmission 19, and underbody are mounted or suspended on the main frames 1, 1 ', the handle portion 20 and the seat portion 21 are substantially omitted. On the upper surfaces of the left and right main frames 1, 1 'located in the middle, the cross members 2 formed on the inclined support portions 2b, 2b with both ends inclined obliquely upward are fixed, and the inclined support portions 2b, 2b are fixed. The step 3 is mounted on the upper part, and a space formed between the step 3 and the cross member 2 is moved from the engine 18 to the transmission 19.
The above problem was solved by locating the propeller shaft 15 for transmitting power to the vehicle, and suspending the substep 4 at the end of the front rod inclined support portion 2b.

(E) Operation The main frames provided on the left and right across the front and rear of the vehicle form a ladder-type frame by connecting the front part and the rear part with a cross member, while the central cross member forms the upper surface of the main frame. While being connected, the left and right ends are inclined obliquely upward to form an inclined support portion, and a substep is mounted on the upper portion of the inclined support portion.

The center cross member is provided with support brackets at both ends and in the middle at several places upward, and a step for mounting a foot during traveling operation is attached to the upper surface thereof.

In the vicinity of the left and right main frames, links and rods for clutch pedals and brake pedals necessary for vehicle traveling operation are arranged, and mainly run back and forth in the lower peripheral space of the inclined support portion of the cross member.

The sub-step has a U-shaped structure, the upper end of which is closed with a connecting plate, and a step plate is attached to the part in contact with the foot. When the driver gets into the vehicle, the driver climbs one foot over the substep, and then puts both feet on the step.

When driving the vehicle, the driver operates the clutch pedal with the left foot while sitting on the seat and depresses the left and right brake pedals alone or simultaneously with the right foot to operate the clutch, brake and turn the vehicle. .

(F) Embodiment One embodiment of the present invention will be described with reference to the drawings. Ladder-type main frames 1 and 1 'having a B-shaped cross section are provided in front and rear of a vehicle. The center cross member 2 is welded to the upper surfaces of the main frames 1 and 1 'at a position substantially in the middle of the main frames 1 and 1'.
To reinforce the frame.

The cross member 2 is formed integrally with inclined support portions 2b, 2b inclined obliquely upward from the width portions of the main frames 1 and 1 ', and side frames 2a, 2a provided at both ends thereof and a support erected in the middle. A step 3 is mounted on the upper surface of the bracket 9, and a sub-step 4 is mounted on the outer surface of the left side frame 2a.

In the vicinity of the left and right main frames 1 and 1 ′, links and rods are arranged forward and backward from a clutch rod 10, a left brake rod 11, a right brake rod 12, etc., necessary for driving the vehicle. It runs in the peripheral space below the inclined support portions 2b, 2b formed at the bottom.

Further, the propeller shaft 15 that transmits power from the engine 18 to the rear transmission 19 runs in the space formed between the step 3 and the cross member 2 below the step 3, and is covered by the step 3 for the driver. There is no danger and the propeller shaft 15 is
, The step 3 can be configured as a flat deck.

Furthermore, front wheel drive shaft 16, steering gear box
17 is also disposed between the left and right main frames 1, 1 'by lifting the step 3 as in the present invention.

The sub-step 4 is formed in a U-shape by a pipe or a round bar 4a, and the upper end is connected by a connecting plate 13 to the cross member 2
When the driver steps on the sub-step 4, the toes enter the lower space on both sides of the cross member 2 when the driver steps on the sub-step 4.

A step plate 5 is welded to a lower portion of the sub-step 4 (a portion in contact with the sole of the foot) so that the foot can be easily put on the sub-step 4 when getting on the driver's seat.

When driving the vehicle, the driver depresses the clutch pedal 6 with the left foot while sitting on the seat and depresses the left brake pedal 7 and the right brake pedal 8 individually or simultaneously with the right foot to engage / disengage the clutch, brake the vehicle, and turn. Perform the operation.

(G) Effects of the Invention The present invention having the above-described structure has the left and right main frames 1, 1 'provided in the front and rear of the vehicle. Frame 1,1 ′
The cross member 2 is fixed to the upper surface of the frame, and the step 3 is supported by the cross member 2, so that the steps are made as close as possible to the main frame, but the structure is simplified and the strength of the frame is increased. At the same time, the step portion between the handle portion 20 and the seat portion 21 which is indispensable during the driving operation is supported.

Further, the cross member 2 is formed on the inclined support portions 2b, 2b by inclining both ends thereof obliquely upward, and the inclined support portions 2b, 2b are formed.
Since the step 3 is supported by the upper end of the step 2b, the step 3 is supported by the inclined support portions 2b, 2b in the direction of the cross-over, so that the strength of the step 3 and the support are further ensured.

Further, the propeller shaft 15 can be housed and arranged by utilizing the space formed between the step 3 and the cross member 2, so that the propeller shaft 15 is protected,
The height of the vehicle can be further reduced and the fuselage can be stabilized, and the step 3 can be configured as a flat flat deck, as compared with a conventional structure in which a propeller shaft is disposed below the main frame. Becomes possible.

Further, since the sub-step 4 is suspended using the end of the inclined support portion 2b of the cross member 2, the sub-step 4 can be firmly mounted without providing a special mounting member. Even when stepping on 4 and boarding the vehicle, the toe does not hit the main frame 1 etc.
You can easily board.

[Brief description of the drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a side view of a tractor, and FIG. 2 is a cross-sectional view of a step device. 1 is a main frame, 2 is a cross member, 2b is an inclined support, 3 is a step, 4 is a substep, 5 is a tread, 6
Is a clutch pedal, 7 is a left brake pedal, 8 is a right brake pedal, 10 is a clutch rod, 11 is a left brake rod, 12 is a right brake rod, 13 is a connecting plate, 15 is a propeller shaft, 16 is a front wheel drive shaft, 18 ... engine, 19 ...
Transmission, 20 for steering wheel, 21 for seat

Claims (1)

(57) [Scope of request for utility model registration] A main frame is provided on the left and right sides of a vehicle.
In a chassis type vehicle in which main parts such as an engine 18, a handle part 20, a seat part 21, a transmission 19, and underbody are mounted or suspended on main frames 1 and 1 'thereof, the handle part 20 The cross member 2 formed in the inclined support portions 2b, 2b with both ends inclined obliquely upward is fixed to the upper surfaces of the left and right main frames 1, 1 'located substantially in the middle of the seat portion 21. The step 3 is mounted on the upper part of the parts 2b, 2b, and the propeller shaft 15 for transmitting power from the engine 18 to the transmission 19 is located in the space formed between the step 3 and the cross member 2, and A step device for a vehicle, wherein a sub-step 4 is suspended at an end of a support 2b.