JPH022659Y2 - - Google Patents

Description

[Detailed explanation of the invention] (1) Industrial application field This invention is used for high-altitude work in which the workbench is cooled by sending cold air into the workbench installed at the tip of an electrically insulated boom. This relates to a car cooling system.

(2) Prior art In an aerial work vehicle, it is practical, for example, to install a cooling device at an appropriate position on the vehicle body and to blow cold air to the work platform at the tip of the boom using an air pipe installed inside or along the boom. As described in JP-A No. 59-64898, it has been known for a long time.

(3) Problems that the invention aims to solve However, conventional cooling systems have to reduce the capacity of the cooling system in order to compensate for the decrease in the volume of cold air and the rise in temperature from the cooling system installed in the car body to the workbench. The problem is that the cooling system and air pipes become larger, and if the cooling system is mounted on the workbench to solve this problem, the loading capacity and loading space of the workbench will be reduced. It was hot.

(4) Means for solving the problems In order to solve the above problems, the present invention has an evaporator installed on a workbench installed at the end of an electrically insulated boom, and an evaporator installed on the vehicle body. A system comprising a condenser provided, a compressor connected to the condenser, a hose connecting the evaporator, the condenser, and the compressor, respectively, and a refrigerant sealed in a closed circuit composed of the evaporator, condenser, compressor, and hose. It is.

(5) Effect With the above configuration, the compressor is driven to send refrigerant to the condenser, and the refrigerant cooled in the condenser is sent to the evaporator via the hose.
When the refrigerant passes through the evaporator, cold air is discharged into the workbench to cool the workbench.

(6) Examples Examples of the present invention will be described below with reference to the drawings.

As shown in FIG. 2, the aerial work vehicle has a turntable 3 mounted on a vehicle body 1 supported by outriggers 2.
The base end of an electrically insulated telescoping boom 4 is pivotally supported on this turntable 3, and the telescoping boom 4 is extended and contracted by a built-in telescoping device (not shown), and the undulation cylinder 5 is extended and contracted. A workbench 6 is held in equilibrium at the tip of the telescopic boom 4.

As shown in FIG. 1, the cooling system includes an evaporator 7 on a workbench 6, a fan 8 that sends outside air to the evaporator 7, and a hydraulic motor 9 that drives the fan 8. , a hydraulic motor 11 that drives this compressor 10, and a condenser 12 connected to the discharge port and inlet of the compressor 10 through an inlet and a hose 17.
and a fan 13 that sends air to this condenser 12.
and an electric motor 4 that drives the fan 13, which connects the discharge port of the evaporator 7 and the compressor 1.
The inlet of the evaporator 7 is connected to the inlet of the evaporator 7 by a hose 15 made of nylon, which is an electrically insulating material, and passed through the telescopic boom 4. A hose 16 made of nylon, which is an electrically insulating material, is passed through the boom 4 and connected to the evaporator 7, the hose 15, the compressor 10, the hose 17, the capacitor 12, and the receiver dryer 1.
A refrigerant is sealed in a closed circuit composed of the refrigerant 8 and the hose 16.

With the above configuration, when cooling the inside of the workbench 6 while working with an aerial work vehicle, the hydraulic motor 11 is driven to operate the compressor 10, the compressor 10 sends refrigerant to the condenser 12, and the electric motor 14 is activated. The fan 13 is driven to rotate, and the rotation of the fan 13 sends air to the condenser 12 to cool the refrigerant passing through the condenser 12.The cooled refrigerant passes through the hose 16 via the receiver dryer 18 and is then sent to the evaporator 7. Sent. At this time, the hydraulic motor 9 is driven to rotate the fan 8, and as the fan 8 rotates, outside air is sent to the evaporator 7. When the refrigerant liquefied in the evaporator 7 evaporates, it absorbs heat and flows into the workbench 6. It is discharged and cools the inside of the workbench 6. The refrigerant discharged from the evaporator 7 is sent to the compressor 10 through the hose 15, and is sent again to the condenser 12 by the compressor 10 to be cooled, and is circulated to the evaporator 7 through the receiver dryer 18, the hose 16, and the like.

(7) Effects of the invention As described above, according to the invention, the inside of the workbench is cooled by sending chilled refrigerant from the condenser installed on the vehicle body to the evaporator installed in the workbench using the compressor, so that the workbench is cooled. The present invention is effective in improving the workability of a vehicle for aerial work, since it provides a cooling device for a vehicle for aerial work in which the cooling device provided therein can be made small and lightweight, and the insulation of the boom is not impaired.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a circuit diagram of a cooling device, and FIG. 2 is a side view of an aerial work vehicle equipped with a cooling device. 4... telescopic boom, 6... workbench, 7... evaporator, 10... compressor, 12... condenser, 15, 16... hose.

Claims (1)

[Scope of utility model registration request] An evaporator installed on a workbench installed at the tip of an electrically insulated boom, a capacitor installed on the vehicle body, a compressor connected to the capacitor, and a hose connecting the evaporator, the capacitor, and the compressor, respectively. , a refrigerant sealed in a closed circuit composed of an evaporator, a condenser, a compressor, and a hose.