JPH08310797A - Industrial vehicle - Google Patents

Abstract

PURPOSE: To provide an industrial vehicle capable of adjusting the position of a grip section vertically and longitudinally. CONSTITUTION: A worker seated on the driver's seat of an industrial vehicle takes handle actions for traveling. When various levers 20, 21 are operated, hydraulic valves 18, 19 are switched, and corresponding sections are operated. The worker adjusts the vertical position of a grip section 28 in response to the stature and physique before driving the industrial vehicle. A lock tool 25 is loosened, the levers 20, 21 are vertically expanded or shrunk to set the grip section 28 to the desired level, then the lock tool 25 is fastened, and the vertical position of the grip section 28 can be adjusted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an industrial vehicle such as a forklift.

[0002]

2. Description of the Related Art Conventionally, for example, a forklift truck is shown in FIG.
As shown in, a lever 53 for a hydraulic valve 52 is provided in front of the seat 51 in the driver's seat 50 so as to be swingable via a vehicle width direction shaft 54, and connects the lever 53 and the hydraulic valve 52. A connection body 55 is provided. Lever here
53 is a horizontal portion 53A extending rearward from the vehicle width direction axis 54
And a vertical portion 53B extending upward from the rear end of the horizontal portion 53A and an inclined portion 53C extending rearward and upward from the upper end of the vertical portion 53B. The grip portion 56 is provided at the end of the inclined portion 53C. Is provided.

According to this conventional type, an operator seated on the seat 51 grips the grip portion 56 to swing the lever 53 around the vehicle width direction shaft 54, and in conjunction with this, the connector 55 is moved up and down. By doing so, the hydraulic valve 52 can be switched, and thus the mast portion on which the fork is mounted is moved up and down, and the mast portion is tilted.

[0004]

According to the above-mentioned conventional structure, the gripping position of the gripping portion 56 is vertically or distant from each other depending on the height and physique of the operator, and the operability is poor.
It may cause fatigue or malfunction. For this, it is considered to move the seat 51 back and forth, but the operator's feet become complicated, the structure becomes complicated, and it is not possible to cope with it sufficiently.

An object of the present invention is to provide an industrial vehicle in which the position of the grip portion can be adjusted up and down and back and forth.

[0006]

In order to achieve the above object, an industrial vehicle according to the first aspect of the present invention is provided with a lever for a hydraulic valve having a grip portion in front of a seat in a driver's seat via a vehicle width direction shaft. The lever is configured to be extendable and retractable in the vertical direction, and a lock tool at an extendable position is provided.

Further, in the industrial vehicle of the second aspect of the present invention, a lever for a hydraulic valve having a grip portion is provided in front of the seat in the driver's seat so as to be swingable via a shaft in the vehicle width direction, and A connection body for connecting to the hydraulic valve is provided, the connection body is configured to be expandable and contractible, and a locking tool at an expansion / contraction position is provided.

[0008]

According to the structure of the first aspect of the invention described above, the industrial vehicle can be moved by the operator sitting in the driver's seat operating the steering wheel. Then, by operating various levers and switching the hydraulic valves, it is possible to operate the corresponding parts. At that time, before driving the industrial vehicle, the worker can adjust the vertical position of the grip portion according to the height and the physique. That is, the lever can be expanded and contracted in the vertical direction while the lock is loosened to bring the grip to a desired level, and by tightening the lock, the vertical position of the grip can be adjusted.

According to the structure of the second aspect of the present invention, the operator can adjust the front-back position of the grip portion according to his / her height and physique before driving the industrial vehicle. That is, by loosening the locking device and then expanding and contracting the connecting body, the lever is swung around the vehicle width direction axis to change the inclination angle, and thereby the locking device is moved to the desired front-back position. The front and rear position of the grip can be adjusted by tightening.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the first invention will be described below with reference to FIGS. In FIG. 4, a forklift 1 which is an example of an industrial vehicle is provided with a pair of left and right front wheels 3 at a front portion of a vehicle body 2 and a pair of left and right rear wheels 4 at a rear portion of the vehicle body 2. A driver's seat 5 is provided above the section. A mast 6 which is vertically expandable and contractible is attached to the front end of the vehicle body 2 so as to be rotatable in the front-rear direction via a connecting shaft 7 in the vehicle width direction, and a tilt cylinder 8 for rotating the front-rear direction is provided. It is provided between 2 and the mast 6.

The mast 6 is composed of a pair of left and right outer frames 9 on the forklift 1 side, and a pair of left and right inner frames 10 which are guided by the outer frames 9 and can be raised and lowered, and the outer frame 9 and the inner frame 10. A lift cylinder 11 is provided between them. Also inner frame
A lift bracket 12 is provided which is guided up and down so as to be movable up and down, and a pair of left and right forks 13 is provided on the lift bracket 12 via a pair of upper and lower finger bars.

The driver's seat 5 has a seat 15 and this seat 15
The handle 16 located in front of the vehicle and the tilt lever 20 for the hydraulic valve 18 to which the tilt cylinder 8 is connected.
And a lift lever 21 for a hydraulic valve 19 to which the lift cylinder 11 is connected.

As shown in FIGS. 1 to 3, the levers 20 and 21 are provided so as to be swingable through a shaft 22 in the vehicle width direction, and are configured to be vertically expandable and contractable. That is,
The base member 23 formed of an L-shaped rod body has a lower free end of a horizontal rod portion connected to the vehicle width direction shaft 22 side, and a screw portion 24 formed at a free end of an upper vertical rod portion. At the same time, a lock nut (an example of a lock tool) 25 is screwed in advance. In addition, the operating member 26 formed of an inverted L-shaped pipe body,
A female screw portion 27 that can be screwed into the screw portion 24 is formed at the free end of the lower vertical rod portion, and a grip portion 28 is provided at the free end of the upper horizontal rod portion.

The operation of the above-described embodiment will be described below. The forklift 1 can be moved by the operator sitting on the seat 15 of the driver's seat 5 operating the steering wheel 16. Then, by operating the lift lever 21 and switching the hydraulic valve 19 to operate the lift cylinder 11, the fork 13 can be moved up and down via the lift bracket 12 or the like, whereby the desired fork work can be performed. Further, by operating the tilt lever 20 and switching the hydraulic valve 18 to operate the tilt cylinder 8, the mast 6 is connected to the connecting shaft 7.
Can be rotated (tilted) around the
The posture of the fork 13 can be changed via the above.

Here, the operator at the driver's seat 5 operates the tilt lever 20 and the lift lever 21 via the grips 28, respectively. At that time, before operating the forklift 1, The vertical position of the grip portion 28 is adjusted according to the height and physique. That is, the operating member 26 is rotated with respect to the base member 23 with the lock nut 25 loosened. As a result, the female screw portion 27 is screwed into the screw portion 24, whereby the levers 20 and 21 are expanded and contracted. Then, with the grip portion 28 reaching the desired level and facing the driver's seat 5 side, the lock nut 25 is tightened to integrate the base member 23 and the operating member 26. As shown by the phantom line, the adjustment of the vertical position of the grip portion 28 is completed.

By changing the rotational position of the operating member 26 with respect to the base member 23 when the grip portion 28 is oriented toward the driver's seat 5 side, for example, as shown by the solid line in FIG.
20 and 21 are parallel to each other and the grip 28 is directed toward the driver's seat 5 side, or as shown by the phantom line in FIG.
It is also possible to arrange 0 and 21 in a V shape and adjust the distance between the grips 28 and then direct them toward the driver's seat 5. At that time, one of the two levers 20 and 21 may be rotated to adjust the interval.

FIG. 5 shows another embodiment of the first invention. That is, the free end of the vertical rod portion of the operating member 26 is slidable in the longitudinal direction with respect to the free end of the vertical rod portion of the base member 23, and is formed at the free end of the vertical rod portion of the operating member 26. A lock bolt (an example of a lock tool) 31 that can be screwed into the formed female screw portion 30 and that can be brought into contact with the free end of the vertical rod portion of the base member 23 is screwed in.

According to this alternative embodiment, the lock bolt 31
The levers 20 and 21 are expanded and contracted by sliding the operating member 26 with respect to the base member 23 in a state where the levers are loosened. Then, with the grip portion 28 reaching the desired level and facing the driver's seat 5 side, the lock bolt 31 is tightened to operate the base member 23.
By abutting on the side, the base member 23 and the operating member 26 are integrated, and the adjustment of the vertical position of the grip portion 28 is completed.

FIG. 6 shows an embodiment of the second invention. That is, in front of the seat 15 in the driver's seat 5, a tilt lever 20 for a hydraulic valve 18 to which the tilt cylinder 8 is connected and a hydraulic valve 19 to which a lift cylinder 11 is connected.
A lift lever 21 and the like are provided. Each of these levers 20 and 21 is composed of a Z-shaped rod body, the lower free end of which is connected to the vehicle width direction shaft 22 side so as to be swingable, and the upper free end has a grip portion 28. It is provided.

Then, the levers 20 and 21 and the hydraulic valve 1
Connection bodies 40 for connecting 8 and 19 are provided respectively, and each of these connection bodies 40 is configured to be extendable and retractable, and a lock tool in an extendable position is provided. That is, the connection body 40
Is an upper rod body 42 connected to the lower free ends of the levers 20 and 21 via a vehicle width direction pin 41 so as to be relatively swingable, and a lower rod body 43 connected to the hydraulic valves 18 and 19 side. , A turnbuckle 44 provided between the opposite ends of both rod bodies 42, 43
A lock nut (an example of a lock tool) 45 is provided on the lower rod body 43 side.

According to the embodiment of the second aspect of the present invention, similarly, before and after the forklift 1 is operated, the front and rear position of the grip portion 28 is adjusted according to the height and physique of the operator. That is, with the lock nut 45 loosened, the turnbuckle 44 is rotated forward and backward. As a result, the free ends of the rod bodies 42, 43 are approached or separated from each other, that is, the connection body 40 is expanded and contracted, whereby the levers 20, 21 swing about the vehicle width direction axis 22 to change the inclination angle. It As a result, when the grip portion 28 reaches the desired front-rear position, the lock nut 45 is tightened to complete the adjustment of the front-rear position of the grip portion 28 as shown by the phantom line in FIG. 6, for example.

FIG. 7 shows another embodiment in which one embodiment of the first invention and one embodiment of the second invention are combined. According to this another embodiment, by expanding and contracting the levers 20 and 21,
The vertical position of the grip portion 28 can be adjusted, and the longitudinal position of the grip portion 28 can be adjusted by expanding and contracting the connecting body 40.

[0023]

According to the first aspect of the present invention having the above-described structure, the operator can always adjust the vertical position of the grip portion appropriately and sufficiently according to his / her height and physique before driving the industrial vehicle. Therefore, the operability is improved, and the vehicle can be operated without causing fatigue or erroneous operation. Besides, the structure is simple,
The operator's feet can be simplified.

Further, according to the second aspect of the present invention having the above-mentioned structure, before driving the industrial vehicle, the operator can always adjust the front and rear positions of the grip portion appropriately and sufficiently according to the height and the physique.
Therefore, the operability is improved, and the vehicle can be operated without causing fatigue or erroneous operation. Moreover, the structure is simple and the operator's feet can be simplified.

[Brief description of drawings]

FIG. 1 is a side view of a lever mounting portion in an industrial vehicle, showing an embodiment of the first invention.

FIG. 2 is a partially cutaway side view of a main portion of a lever disposition portion of the industrial vehicle.

FIG. 3 is a plan view of a lever arrangement portion of the industrial vehicle.

FIG. 4 is a side view of a forklift truck that is an example of the industrial vehicle.

FIG. 5 is a partially cutaway side view of the main part of the lever disposition part of the industrial vehicle, showing another embodiment of the first invention.

FIG. 6 is a side view of a portion where a lever is provided in an industrial vehicle according to the second embodiment of the present invention.

FIG. 7 is a side view of a lever mounting portion in an industrial vehicle, showing another embodiment of the present invention in which the embodiment of the first invention and the embodiment of the second invention are combined.

FIG. 8 is a side view of a lever arrangement portion in an industrial vehicle showing a conventional example.

[Explanation of symbols]

 1 Forklift (Industrial vehicle) 5 Driver's seat 6 Mast 8 Tilt cylinder 11 Lift cylinder 15 Seat 16 Handle 18 Hydraulic valve 19 Hydraulic valve 20 Tilt lever 21 Lift lever 22 Vehicle width axis 25 Lock nut (locking device) 28 Grip Part 31 Lock bolt (locking tool) 40 Connection body 45 Lock nut (locking tool)

Claims (2)

[Claims] 1. A lever for a hydraulic valve having a grip portion is provided in front of a seat in a driver's seat so as to be swingable via a shaft in the vehicle width direction, and the lever is configured to be vertically expandable and contractible. An industrial vehicle characterized by being provided with a locking device in a telescopic position. 2. A lever for a hydraulic valve having a grip portion is provided in front of a seat in a driver's seat so as to be swingable via a shaft in a vehicle width direction, and a connecting body for connecting the lever and the hydraulic valve is provided. An industrial vehicle, which is provided with the connecting member configured to be extendable and contractible, and further provided with a lock tool at an extendable position.