JP2772502B2 - Hydraulic drive single rail transporter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of an agricultural single-rail carrier conventionally used in an orchard or the like, and more particularly to a stable traveling performance with a plurality of hydraulic drive wheels. It gains safety.

[0002]

2. Description of the Related Art As shown in FIG. 6, a single rail transporter conventionally used for agriculture is provided with driving wheels on a vehicle equipped with a leading engine, and a pulley, a gear, and the like are provided between the vehicle and the engine. It was transmitted to obtain the driving force. Therefore, it was not possible to provide drive wheels on the subsequent luggage truck unless an engine was added. Therefore, there remains a problem in obtaining a stable driving force, safety, and the like.

That is, in the severe winter, there is a possibility that the pinion of the drive wheel slips and runs away due to ice formation on the rail rack or adhesion of water droplets in rainy weather. or,
In a rough trajectory, the driving vehicle is located on a down slope, but when the luggage carrier is still up, the stable driving force could not be obtained and the rails could be damaged. . The braking force is also a big factor,
Conventionally, the so-called constant speed brake and emergency stop brake are of a centrifugal clutch type using any one of output shafts for reducing the rotational force of the engine, and are therefore provided only in a driving vehicle in which the engine is installed. Was something.

[0004] In the conventional agricultural use, in principle, the operator does not ride, and the load to be loaded is not so large. However, for the transport of workers to the transmission tower construction site in the mountainous area, which is currently under development, personnel are allowed to ride on them.
In order to protect the lives of up to 13 persons from danger, safer devices are desired.

[0005]

Accordingly, in the present application, the drive wheels driven by hydraulic pressure are provided not only in a drive vehicle equipped with an engine but also in a passenger trolley on which a person rides, and have a braking function. If it is not confirmed that it is in a safe state, it will not enter the driving state, so by adopting a so-called "safety confirmation type system", a single rail transport machine with more safe and stable traveling and stopping functions It is disclosed.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to one embodiment of the present invention,
It consists of a driving car and two passenger cars connected to it. The drive vehicle 6 includes an instrument panel such as an engine 1, a hydraulic pump 2, a fuel tank, a hydraulic gauge, and the like. The hydraulic oil from the hydraulic pump 2 is piped through a switching valve 3, a balancing valve 4, and the like, and meshes with a rail rack. It has a hydraulic motor 9 coupled to a drive wheel 10 having a pinion. In the following passenger car, one of the front and rear wheels is used as a drive wheel 10, and piping is performed in parallel with the hydraulic pump 2 of the drive car 6 for each.

The hydraulic circuit is shown in FIG. 2. The operation of this circuit will be described. The rotation of the engine 1 is transmitted to the hydraulic pump 2 by a pulley to compress the oil from the connected tank and to switch the valve. 3, via the balancing valve 4 to the hydraulic motor 9. A drive wheel 10 is provided coaxially with the hydraulic motor 9 and meshes with a rail rack to obtain a driving force. The switching valve 3 uses an electromagnetic valve to determine the direction in which the pressure oil flows, that is, the rotation direction of the hydraulic motor 9, and determines whether the transport machine is moving forward or backward.

The balancing valve 4 is a so-called escape prevention device that opens and closes the gate by sensing the hydraulic pressure. The climbing valve opens the gate to increase the amount of pressurized oil to obtain a driving force, but to move down the slope, Due to its own weight, the hydraulic motor is turned and it works like a pump to send out oil even if no oil pressure is applied. At this time, the outlet of the hydraulic motor is closed to reduce its rotation.

The counterbalance valve 5 is a hydraulic brake. When no hydraulic pressure is generated, the self-locking mechanism operates to hold the rotation of the hydraulic motor 9, that is, the rotation of the drive wheels 10 in a stopped state. The state in which no hydraulic pressure is generated is when the engine 1 is not started, when the engine 1 is stopped, when pressure oil leaks due to breakage of hydraulic piping, etc. Is generated, the braking is applied first, and is normally in a braking state, and the brake is released and the operation is performed. Therefore, this is called a "safety confirmation type system". The hydraulic motor 9 is also provided with a mechanical brake that is normally locked and unlocked by hydraulic pressure, and also serves as a measure to prevent runaway, runaway, and the like.

[0010] In addition, a relief valve for preventing a pressure higher than the set pressure from being applied to the circuit, and a runaway caused by a vacuum in the motor due to oil leakage in the hydraulic motor, etc.
It is equipped with a check valve for supplying oil.

[0011]

The present invention relates to a single-rail carrier equipped with a hydraulic drive system.
In other words, many conventional problems can be solved by dispersing and providing the drive wheels 10 at three locations.

First, when the engine is started by the safety confirmation type system and the drive wheels 10 rotate and start moving on the rails, there is no damage to the hydraulic piping and no forgetting to release the brakes. It is not necessary to consider the burn-in due to forgetting to release the parking brake. In addition, when the engine stopped due to climbing without performing sufficient warm-up operation in the severe cold season, there were many braking methods using a centrifugal clutch using the output shaft of the engine, so there was concern about the response However, in the case of hydraulic drive, the counterbalance valve 5 operates and the hydraulic motor 9 is immediately locked, so that there is no danger.

If the rack fixed to the rear surface of the rail is damaged, the pinion may run idle if the drive wheel 10 is located at one location, and runaway may occur if the damage length is long. In the present application having three driving wheels 10, the other two wheels prevent it, and the balancing valve 5 operates to achieve stable running. Also, as shown in FIG. 5, when the leading drive wheel 10 is on the downhill and the subsequent drive wheel 10 is on the uphill, the overloaded leading The drive wheels 10 do not damage the rails and racks.

The most significant effect is that the use of the hydraulic drive provides a "safety confirmation type system", and the braked state is maintained when the vehicle is not running. As described above, many of the conventional problems are solved by adopting the present application.

[Brief description of the drawings]

FIG. 1 is a front view of a single-rail carrier equipped with a hydraulic drive wheel of the present application.

FIG. 2 is a hydraulic circuit diagram of the present application.

FIG. 3 is a front view of the driving wheels of the present application.

FIG. 4 is a side view of the drive wheels of the present application.

FIG. 5 is a diagram showing the use state of a single-rail carrier equipped with the hydraulic drive wheels of the present application.

FIG. 6 is a front view of a conventional single rail transporter.

[Explanation of symbols]

 1 Engine 2 Hydraulic pump 3 Switching valve 4 Balancing valve 5 Counter balance valve 6 Driving car 7 Passenger car 8 Passenger car 9 Hydraulic motor 10 Driving wheel

Claims (1)

(57) [Claims] 1. A hydraulic pump 2 is operated by an engine 1;
The generated pressure oil enters the hydraulic motor 9 via the switching valve 3.
To rotate the drive wheel 10 linked to the hydraulic motor 9
Hydraulic circuits are provided on the drive vehicle 6 and the passenger cars 7,8.
Hydraulic circuit with hydraulic circuits flowing in parallel to hydraulic motors 9
In a driven single-rail conveyor, the balance is installed in the hydraulic circuit.
Escape valve with counter valve 4
Safety check system by forming a safety device and a hydraulic brake device
Hydraulic drive type single track transportation characterized by having a system
Transporter.