JPH08258753A - Carburetor tilting device - Google Patents

Abstract

PURPOSE: To provide a carburetor tilt device which is so constituted as to reduce a cost and weight, in a truck. CONSTITUTION: The lower part of a carburetor 2 is pivotally supported to the frame 1 of a truck, a carburetor tilt motor 3 is located between the frame l and the carburetor 2. An air pressure is fed to the air motor of the carburetor tilt motor 3 through a tilt controller 9, a pipe line on the up side and a pipe line on the down side. The rod of the carburetor motor 3 is protruded and retracted from the rod of a cylinder 4 to tilt the carburetor 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for tilting a cab of a truck.

[0002]

2. Description of the Related Art In a conventional truck, a hydraulic cylinder is installed between a frame and a cab for tilting a cab pivotally supported by the frame, and an electric hydraulic pump and an emergency engine for operating the hydraulic cylinder are provided. It was equipped with a manual hydraulic pump, oil tank, etc., but all of these hydraulic devices are dedicated to cabots, and although their operating rates are low, they are relatively expensive and heavy, and extremely There was an uneconomical drawback.

[0003]

SUMMARY OF THE INVENTION The present invention seeks to provide a relatively inexpensive and lightweight cavitating device.

[0004]

For this reason, the cavitating apparatus according to the present invention is provided with an air motor which is normally and reversely rotated by air pressure between a cab pivotally supported by a frame and the frame, and the air motor. A cabult motor having a rod that expands and contracts according to the rotation of the air motor is provided.

[0005]

Therefore, if the air motor of the cabult motor is rotated forward and backward by the air pressure from the air pressure source usually mounted on the truck, the rod expands and contracts accordingly, and the cab pivotally supported on the frame is lifted. The cab motor can be tilted appropriately.

[0006]

Embodiments of the present invention shown in the drawings will be specifically described below. 1 to 3, a lower portion of a cab 2 is pivotally supported on a front end of a frame 1 of a truck, and a cabult motor 3 is provided between the frame 1 and the cab 2.

The cavitated motor 3 includes a cylinder 4 and
An air motor 5 attached to one end of the cylinder 4,
Consisting of a rod 6 with a screw formed on the outer peripheral surface,
The other end of the cylinder 4 is pivotally supported by the frame 1, the upper end of the rod 6 is pivotally supported by the lower part of the cab 2, and the screw formed on the inner surface of the rotating shaft 7 of the air motor 5 and the screw of the rod 6 are However, since the rod 6 is engaged through a large number of balls (not shown) and the rod 6 is prevented from rotating, the rod 6 can be expanded and contracted from the cylinder 4 in the axial direction according to the forward and reverse rotation of the air motor 5. .

Further, the air tank 8 and the cavitated motor 3 which are always provided in the truck are connected via the three-way magnet valves 10 and 11 in the tilt controller 9 and the up side pipe line 12 and the down side pipe line 13, respectively. At the same time, the air latch 15 that locks the striker 14 on the cab 2 side and the up-side pipeline 12 are connected,
Further, the up-side pipeline 12 and the down-side pipeline 13 are respectively passed through the check valve 16 and then the emergency port 1
Connected to 7.

As shown in FIG. 3, the rod 6 of the cabulted motor 3 contracts into the cylinder 4, and as shown in FIG.
When the 3-way magnet valve 10 in the tilt controller 9 is opened from the state in which it has been lowered onto the frame 1, the air latch 1 is passed from the air tank 8 through the up-side conduit 12.
5 is supplied with air pressure to operate the air latch 15 to unlock the striker 14, while air pressure is supplied to the air motor 5 to rotate the rotating shaft 7.
The shaft 6 is appropriately decelerated by the engagement of the screw with the screw of the rod 6, and the rod 6 extends from the cylinder 4 as shown in FIG. 4, so that the cab-tilt motor 3 can tilt the cab 2, and thereafter, The rod 6 is held at the most extended position by the locking action of the screw of the rotating shaft 7 and the screw of the rod 6, and the cab 2 is placed in a tilted state.

When the three-way magnet valve 10 in the tilt controller 9 is closed and the three-way magnet valve 11 is opened, the air tank 8 is connected to the down side conduit 13.
Air pressure is supplied to the air motor 5 through the air shaft 5 and the rotating shaft 7 rotates in the reverse direction, so that the rod 6 contracts into the cylinder 4 at an appropriate speed in the same manner as described above, and the cab 2 moves to the frame 1
The striker 14 and the air latch 15 are automatically engaged while being lowered.

Further, while the cab 2 is being tilted from above the frame 1, the three-way magnet valves 10 and 11 in the tilt controller 9 are closed, and the air motor 5 is closed.
When the supply of air pressure to the cylinder is stopped, the rod 6 is held in the intermediate position of the cylinder 4 by the locking action of the screw of the rotary shaft 7 and the screw of the rod 6, and the cab 2 is securely held in that position. Therefore, it is possible to easily avoid the cab 2 from interfering with the surroundings at the time of cabulting.

In an emergency where the air pressure in the air tank 8 cannot be used for some reason, a separate air pressure source, such as a spare tire mounted on the truck, is connected to the emergency port 17 so that the cavit lt Operate the air motor 5 of the motor 3 appropriately,
Capturing operation can be performed.

In the above device, since the air pressure of the air tank 8 which is always provided in the truck is used as the power source of the cabot, the electric hydraulic pump dedicated to the cabot and the manual hydraulic pump for emergency are completely required as in the prior art. In addition, the oil tank dedicated to the cavitating is not necessary, and the air motor 5 for performing the cavitating is cheaper and lighter than the hydraulic cylinder, so that the cost of the cavitating device as a whole can be easily reduced and the loading can be easily performed. Since the weight can be significantly reduced, the advantage for vehicles is very large.

Moreover, since the cavitating is performed by the air motor 5 of the cavitating motor 3, even if the air pressure of the air tank 8 cannot be utilized, a suitable air pressure source such as a tire of a vehicle can be used. Since the air pressure can be obtained relatively easily, it is possible to easily perform the cavitating by the cavitating motor 3.
Mostly convenient.

Although the air motor 5 of the cabullt motor 3 uses compressible air as a power source, the three-way magnet valves 10 and 11 in the tilt controller 9 are used.
Since the flow rate of air can be controlled according to the control capacity of
It is needless to say that the operating speed of the cabult can be easily adjusted to an appropriate one, and in the above-mentioned embodiment, the rotary shaft of the air motor is engaged with the screw of the rod, but the rotation of the air motor is appropriately adjusted. It is also possible to engage the pinion driven at a reduced speed with the rack formed on the rod and extend and retract the rod to perform the cavitating.

[0016]

In the cavitating apparatus according to the present invention, the air motor of the cavitating motor is normally and reversely rotated by the air pressure from the air pressure source normally mounted on the truck, and the rod is expanded and contracted to expand and contract the cab. Since it is tilted appropriately, it is expensive for exclusive use with a low operating rate, and hydraulic equipment such as heavy hydraulic cylinders and electric hydraulic pumps are not required, so the cost of the entire device is reduced compared to the past and Since the weight can be significantly reduced, the advantage for vehicles is very large.

[Brief description of drawings]

FIG. 1 is a schematic layout diagram in an embodiment of the present invention.

FIG. 2 is a piping diagram of the above embodiment.

FIG. 3 is an enlarged vertical sectional view of an essential part of the above embodiment.

FIG. 4 is an explanatory view of the operation of the main part of FIG.

[Explanation of symbols]

 1 frame 2 cab 3 cabult motor 5 air motor 6 rod 7 rotating shaft 9 tilt controller 10 3 way magnet valve 11 3 way magnet valve 15 air latch 17 emergency port

Claims (8)

[Claims] 1. An air motor which rotates forward and backward by air pressure between a cab pivotally supported by a frame and the frame.
And a cavitating device provided with a cavitating motor having a rod that engages with the air motor and expands and contracts according to the rotation of the air motor. 2. The cavitating device according to claim 1, wherein a rotating portion of the air motor mounted in a cylinder of the cavitating motor engages with the rod. 3. The cavitating device according to claim 1 or 2, wherein a screw formed on the air motor or a pinion driven by the air motor is engaged with a screw or a rack formed on an outer peripheral surface of the rod, respectively. . 4. The cavitating device according to claim 3, wherein the rod is prevented from rotating, and a screw formed on the air motor is engaged with a screw formed on an outer peripheral surface of the rod. 5. The cavitating device according to claim 4, wherein the screw is engaged with the screw through a large number of balls. 6. The pipe for connecting the air motor and the air tank according to any one of claims 1 to 5.
Cabult equipment equipped with way magnet valve. 7. The cap quilt device according to claim 1, wherein an air latch for the cab is connected to an up side pipe line connecting the air motor and the air tank. 8. The cavitating device according to claim 1, further comprising an emergency port connected to the air motor.