JPH0625505Y2 - Intake device for air cleaner of industrial vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an air intake introduction device for an air cleaner of an industrial vehicle, and particularly to an air intake introduction device suitable for an air cleaner installed in a forklift, a cab-over type industrial vehicle, or the like. .

[Prior Art] Conventionally, in a forklift, a cab-over type industrial vehicle or the like, for example, a forklift, as shown in FIGS. It was installed on one side. That is, the conventional forklift truck comprises an engine (not shown) equipped with an air cleaner 3 in an engine room 2 inside a vehicle body 1 and a base 5 of a driver's seat 4 provided above the front of the vehicle body 1 and forming a central rear portion thereof. A stand portion 6 connected to the vehicle body 1 and a seat 7 arranged on the upper surface of the stand portion 6 are mounted. Then, the side wall 8 on the side of the stand portion 6
An external air intake 11 is provided to the outside of the air cleaner 3 so as to connect the intake inlet pipe 10 to the connection port 9 of the air cleaner 3 and to communicate with the outside. Above the opening of the outside air intake 11, a semicircular arc-shaped rainwater invasion preventive piece 12 is provided so as to project.

[Problems Solved by the Present Invention] As described above, in the conventional device, since the intake air intake 11 is provided on the side of the stand portion 6, when the intake air is introduced, a wind noise is generated at the intake air intake 11. Occurs. Further, in the intake air introduction pipe 10, a sound due to the pulsation of intake air is also generated, and a considerable amount of ambient noise is generated, which deteriorates the work environment. Moreover, the intake port 1 provided on the side of the stand portion 6
From 1 onward, not only rainwater, snow and dirty water, but also foreign matter such as dust rolled up by the running wheel easily intrudes with the inflowing intake air, which not only requires frequent maintenance of the air cleaner 3, but also includes an air cleaner. , Had an adverse effect on the service life of the engine.

Further, it is not preferable to provide the intake port 11 on the side of the stand portion 6 from the appearance only in a place where it is easily noticeable. Further, the protruding histories 12 have a problem that they are an obstacle during maintenance and passengers getting on and off.

[Object of the Invention] The present invention solves the above-mentioned conventional problems, and effectively utilizes the structure of an industrial vehicle to reduce intake noise and prevent the entry of foreign matter into an industrial vehicle air cleaner. It is an object of the present invention to provide an intake air introduction device of the above.

[Constitution of device] The intake device for the air cleaner of the industrial vehicle of the present invention is
An engine equipped with an air cleaner inside the vehicle body, a stand portion which is provided above and in front of the vehicle body and which forms a base portion of a driver's seat and which is connected to the vehicle body at a rear center portion, and a seat mounted on an upper surface of the stand portion are mounted. In this industrial vehicle, a vertically long chamber is defined in the inner corner of the rear of the stand, and the rear wall of the chamber has a suction port covered with a mesh member and does not face the suction port. The inner wall is provided with a delivery port spaced apart from the bottom wall by a required distance, and the delivery port and the air cleaner connection port are connected by an intake pipe.

The device of the present invention can be applied as long as the intake port as the intake port can be arranged at the rear of the stand portion, and includes a forklift and a cab-over type industrial vehicle. The chamber is composed of a compartment having a predetermined volume such as a polygonal shape or a cylindrical shape, and can be easily arranged by utilizing an inner corner portion behind the stand portion. The suction port provided in the chamber is open to the outside of the rear part, while the delivery port is open to the inside of the stand part. It plays an effective role in prevention. In addition, the suction port has a structure in which at least a mesh member is covered in the opening to prevent foreign matter from entering the chamber itself, thereby further improving the intake cleaning.

In the present invention, the driver's cab includes both a cabin in which the entire driver's cab is surrounded by a window or a wall, or a frame having only a head guard and pillars.

[Advantageous effects of the device] In the device of the present invention having the above configuration, the intake air introduced from the rear of the stand through the intake port is
It is delivered to the air cleaner through the delivery port and the intake introduction pipe. Since the intake port is opened toward the rear of the stand part, the flow of intake air is relatively gentle in that part, and the wind noise when introducing intake air is softened, while a chamber is installed in the intake introduction pipe. As a result, this plays the role of a surge tank, the pulsation of intake air is attenuated, and the generation of sound is reduced. Even if a wind noise is generated, it is propagated to the rear, so there is no problem in practical use, and ambient noise can be reduced compared to the conventional case, and the working environment can be improved satisfactorily. Further, since the net-like member is covered at the opening of the suction port, foreign matter does not easily enter the chamber, and hardly intrudes particularly when traveling forward. Even if a small amount of foreign matter invades, as soon as it flows into the chamber through the suction port, it collides with the facing inner wall, is separated and collected on the bottom wall, and is set apart from the bottom wall by a predetermined distance. Since the outlet is prevented from being led out by the outlet position, purified intake air is delivered from the delivery port to the air cleaner through the intake introduction pipe. Therefore, the device of the present invention can simplify the maintenance of the air cleaner and improve the intake performance of the engine including the air cleaner.

An embodiment of the present invention will be described below. The same components as those of the conventional technique are designated by the same reference numerals and detailed description thereof will be omitted.

[Embodiment] In the device of this embodiment, a head guard 13 surrounding the seat 7 is fixed to the vehicle body 1 as shown in Figs. 1 to 4. The head guard 13 is composed of a top frame 14 and four front, rear, left and right columns 15. Behind the seat 7 behind the stand 6, as shown in FIGS. 3 and 4, side walls 16 and a rear wall 17 which constitute a rear outer wall of the stand 6, and inside the stand 6. The inner walls 18 and 19 having an L-shaped cross section that are integrally connected to each of the walls 16 and 17 by welding and the like, and the top wall 20 and the bottom wall 21 that are integrally connected to each of the walls by welding and the like, partition airtightly. A vertically long rectangular parallelepiped chamber 22 is formed. A rectangular suction port 23 is opened in the rear wall 17, and a mesh member 24 is covered at the opening of the suction port 23. As shown in FIG. 3, a circular delivery port 25 is opened at a predetermined distance from the bottom wall 21 in the inner wall 19 arranged in a direction substantially orthogonal to the rear wall 21. Is provided with a discharge hole (not shown) for collecting foreign matter that does not hinder the introduction of intake air into the air cleaner 3. The delivery port 25 has a retractable intake air intake pipe 1
One end of 0 is airtightly connected via a grommet or the like, and the other end of the intake air introduction pipe 10 is airtightly connected to a connecting port 9 of an air cleaner 3 mounted on the engine via a grommet or the like.

In the apparatus of the present embodiment having the above-mentioned configuration, the intake air introduced from the rear of the stand portion 6 through the intake port 23 is smoothly delivered to the air cleaner 3 through the chamber 22, the delivery port 25 and the intake introduction pipe 10. . In the device of the present embodiment, since the intake port 23 for intake air intake is disposed behind the stand portion 6, the intake air flow is relatively gentle at that portion, and the wind noise at the time of intake air introduction is softened. In the intake air introduction pipe 10, the chamber 22 is provided so that it plays a role as a surge tank, and the pulsation of intake air is suppressed, and the generation of sound is reduced. Even if a wind noise is generated, it is propagated backwards, so there is practically no problem compared to the conventional lateral arrangement of the intake air intake, and the work environment can be improved satisfactorily by significantly reducing ambient noise. Practically excellent effects are brought about. Further, since the mesh member 24 is covered at the opening of the suction port 23, foreign matter such as dust is unlikely to enter the chamber 22, and the intake air can be sufficiently cleaned.

Even if a small amount of foreign matter enters, the suction port 23 and the delivery port 25 are arranged in a phase substantially orthogonal to each other, and there is a required gap between them, so that the foreign matter faces the suction port 23. It collides with the inner wall 18 of the chamber 22 and is stored on the bottom wall 21, and then the discharge hole or suction port 23.
It is discharged to the outside via. Moreover, due to the position of the delivery port 25 opened at a required distance from the bottom wall 21, foreign matter is almost completely prevented from being delivered to the intake introduction pipe 10 and the air cleaner 3 through the delivery port 25. Therefore,
The apparatus of this embodiment can simplify the maintenance of the air cleaner 3, and can improve the intake performance of the engine including the air cleaner 3. In addition, the device of the present embodiment does not spoil the appearance of the device because the suction port 23 provided at the rear of the stand portion 6 is difficult to be noticed, and further, during maintenance and when the passenger gets on and off, It has a practically excellent effect of not causing inconvenience.

The present invention is not limited to the above embodiment, and as shown in, for example, FIGS. 5 and 6, for example, as shown in FIG. 5 and FIG. By playing the role of the gutter, it is possible to prevent not only intrusion of rainwater that has fallen directly but also invasion of rainwater that flows down from the upper portion of the driver's seat 4 or the like. Further, as shown in FIGS. 7 and 8, the opening of the suction port 23 is moved to the left and right,
By covering the upper region with the cover 27 and opening the lower part, it is possible to prevent rainwater and the like from further invading from the side and to further prevent foreign substances from entering.

[Brief description of drawings]

1 to 4 respectively show an embodiment of the present invention. FIG. 1 is a plan view thereof, FIG. 2 is a side view thereof, and FIG.
1 is an enlarged cross-sectional view of an essential part showing an enlarged portion A in FIG. 1, FIG. 4 is a side view of the essential part seen from the direction of FIG. 3B, and FIGS. 5 to 8 are other parts of the present invention. FIG. 9 to FIG. 12 show a conventional device, FIG. 9 is a plan view thereof, and FIG. 10 is a side view thereof.
FIG. 11 is a fragmentary sectional view showing an enlarged part A in FIG. 9, and FIG. 12 is a side view of the essential part seen from the direction C in FIG. In the figure, 3 ... Air cleaner, 6 ... Stand part, 7 ... Seat, 10 ... Intake inlet pipe, 22 ... Chamber, 23 ...
Intake port, 24 ... mesh member, 25 ... delivery port.

Claims (1)

[Scope of utility model registration request] 1. An engine equipped with an air cleaner inside a vehicle body, a stand portion which is provided above and in front of the vehicle body and which constitutes a base portion of a driver's seat, and which is connected to the vehicle body at a rear center portion, and is mounted on an upper surface of the stand portion In the industrial vehicle equipped with a seat, a vertically long chamber is defined and formed in the inner corner behind the stand, and the rear wall of the chamber has an inlet port covered with a mesh member. An industrial vehicle characterized in that an outlet is opened in the inner wall not facing the inlet at a required distance from the bottom wall, and the outlet and the connecting port of the air cleaner are connected by an intake pipe. Intake device for air cleaner.