JPH08254069A - Wing drive device for wing truck - Google Patents

Abstract

PURPOSE: To provide a wing drive device having hydraulic cylinders for opening and closing wings, and which can perform emergency opening and closing operation of wings upon failure by providing a hand pump unit in parallel with a motor driven hydraulic pump. CONSTITUTION: A power unit is composed of a motor driven pump 1, a solenoid valve 2, a check valve 3 and a hand pump unit 6 in parallel with the motor driven pump 1. When a handle 6a of the hand pump unit 6 is manipulated by a hand as necessary, oil in a hydraulic circuit is fed toward one side. With this arrangement, when the motor driven pump 1 fails so that the operation of wings in a wing track becomes inoperable, either the left wing or the right wing can be opened and closed by the hand pump unit 6 instead of the motor driven pump 1. For example, by manipulating the hand pump unit while pressing a vertical motion switch attached on a wing group body, the wing can be opened and closed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention also includes wing roof type trucks (wing type trailers, wing type full trailers, etc. that are towed, but in the present invention, a wing truck cannot be opened / closed). The present invention relates to a wing drive device that solves the problems of time.

[0002]

2. Description of the Related Art In truck transportation, which is the mainstay of freight transportation, wing trucks are remarkably popularized due to efficient transportation and labor saving. Opening and closing of the wings 10 can be seen in Fig. 4, but it is usually done by cylinders provided at the front and rear of the cargo bed and at the left and right.
Since the wing on the left side of the vehicle is opened in FIG. 4, only the left front cylinder 5f and the rear cylinder 5R are visible. In addition to this, front and rear cylinders 4f, also on the right wing,
There are 4Rs (see Figures 1-3). In these cylinders, the hydraulic pressure of a hydraulic pump 1 operated by an electric motor is acted on the cylinders via a solenoid valve 2 and a check valve 3 midway as shown in FIGS.

[0003]

Since the wing opening / closing drive is a combined device of an electric motor and a hydraulic device (commonly called a package pump unit) as described above, when some failure occurs in the electric device or the hydraulic device, Repair and recovery is difficult unless you have specialized knowledge of electricity or hydraulic pressure, it takes time to supply because of special parts, loading and unloading work is impossible, or wing storage becomes impossible. It was a factor of delaying luggage and stopping operations.
The present invention intends to make it possible for anyone to open and close the wings urgently even if a failure occurs in such a conventional electric motor or hydraulic device for opening and closing the wings.

[0004]

In order to solve the above problems, the present invention provides a hand pump unit in parallel with a conventional electric hydraulic pump in a wing drive device in which a wing is opened and closed by a hydraulic cylinder.

Further, in a wing drive device in which a wing is opened and closed by a hydraulic cylinder, a hand pump unit is provided in parallel with an electric hydraulic pump, and a switching unit for supplying hydraulic pressure to at least one of the wings is provided.

Further, in a wing drive device in which the wings are opened and closed by a hydraulic cylinder, it is possible to switch between the electric hydraulic pump and the cavitating circuit for inclining the cab. The cavitating circuit referred to here means a hydraulic circuit for inclining the operator's cab for repair or the like and for returning the inclined state to the original state.

[0007]

[Function] Even if the wing cannot be opened / closed due to a failure of the electric motor or hydraulic equipment of the package pump unit, the hand pump unit for emergency drive is manually operated or switched to the cabult circuit.
Hydraulic pressure can be applied to or released from the wing opening / closing cylinder to open or close the wing.

[0008]

1 is a hydraulic diagram of an embodiment of the present invention. The inside of the power unit is composed of a conventional electric hydraulic pump 1, a solenoid valve (electromagnetic valve) 2 and a check valve 3, and is similar to the case where the wings are opened and closed by hydraulic cylinders 4 and 5. In such a wing drive device, the hand pump unit 6 is provided in parallel with the electric hydraulic pump 1.
Is provided. The hand pump unit 6 is provided for emergency drive, and the internal structure is a general-purpose handle.
The structure is such that the oil in the hydraulic circuit can be moved in one direction by manually operating 6a.

With this structure, even if the electric hydraulic pump 1 fails and the wings of the wing truck cannot operate, either the left or right wing can be opened or closed instead of the wing drive device. . In actual operation, the wings are opened and closed by operating the hand pump while holding down the up / down switch mounted on the wing roof body of a normal wing truck. In this case, it is necessary that the primary power source and the solenoid valve side have no abnormality.

In addition to the structure of the embodiment shown in FIG. 1, FIG. 2 supplies hydraulic pressure to one of the wings so that only one of the wings is opened and closed by a manual operation of the handle 6a of the hand pump unit 6. This is an example in which a 2-port switching unit is provided. In the event of any failure of the power unit for operating the wing roof body, the handle 7a of the two-port switching unit 7 is operated to switch and the handle 6a of the hand pump unit 6 is manually operated to open or close one of the wings of the wing truck. be able to.

FIG. 3 shows an example in which the hydraulic pressure for the cavitating unit mounted on the side of the truck chassis is bypassed for emergency drive when the wings cannot be opened and closed due to a failure. The power unit for operating the wing roof body can be operated even in the event of any system failure. Therefore, the cavitating circuit 8 is connected to the 2-port switching unit 7.

In this case, after operating the stop valve 8a on the cabling unit side to "close" and the stop valve 8b on the emergency drive switching unit to "open", the handle 7a of the 2-port switching unit 7 is manually operated. The wing can be opened and closed by operating the switch to “open” or “close” and pressing the cavitating operation switch.

[0013]

According to the present invention, even if a failure occurs in the electric motor or hydraulic equipment for driving the wing of the wing truck, the wing can be opened and closed by anyone. As a result, it is possible to load and unload cargo, and it is possible to avoid situations such as delaying cargo and stopping operations.

[Brief description of drawings]

FIG. 1 is a hydraulic diagram of an example in which a hand pump unit according to an embodiment of the present invention is provided.

FIG. 2 is a hydraulic diagram of an example in which a switching valve unit is provided on the same.

FIG. 3 is a hydraulic diagram of an example in which a cavit is connected to the same.

FIG. 4 is a side perspective view of a wing truck.

[Explanation of symbols]

 1 Electric hydraulic pump 2 Solenoid valve 3 Check valve 4 Hydraulic cylinder 5 Hydraulic cylinder 6 Hand pump unit 6a Handle 7 2 Port switching unit 7a Handle 8 Cabling circuit

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[Procedure amendment]

[Submission date] April 19, 1995

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction content]

[0004]

In order to solve the above problems, the present invention provides a hand pump unit in parallel with a conventional electric hydraulic pump in a wing drive device in which a wing is opened and closed by a hydraulic cylinder. Electro-hydraulic
Install a hand pump unit in parallel with the pump.
Since the main points are and,
As long as the road is parallel in this part, electrohydraulic
Whether the distance between the pump and the hand pump unit is long or short
Absent. For example, an electric hydraulic pump and a hand pump unit
May be provided integrally, or the hand pump unit may be installed in the vehicle.
It may be provided to another part of the.

Claims (3)

[Claims] 1. A wing drive device for a wing truck, wherein a hand pump unit is provided in parallel with an electric hydraulic pump in a wing drive device for opening and closing a wing by a hydraulic cylinder. 2. A wing drive system in which a wing is opened and closed by a hydraulic cylinder, and a hand pump unit is provided in parallel with an electric hydraulic pump, and a switching unit for supplying hydraulic pressure to at least one of the wings is provided. Wing drive. 3. A wing drive device for a wing truck, which is capable of switching between an electric hydraulic pump circuit and a cavitating circuit in a wing drive device for opening and closing a wing by a hydraulic cylinder.