JPS5848443B2 - Speed control device for intra-pipe transport equipment using forced air flow - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a conduit using forced airflow, which is configured to forcibly move a cargo carrier along the conduit using forced airflow generated within the conduit as a thrust source. This paper relates to speed control technology for carts in internal transportation equipment.

When cargo transport carts are launched one after another into a pipe, if the pipe is long, the distance between the carts may become abnormally shortened or widened due to weight differences between the carts, which is inconvenient for the entire system. invite.

Therefore, in order to avoid such abnormal approach or separation within the conduit, speed control is required depending on the situation between the bogies in the middle of the conduit. Conventionally, as a countermeasure, brakes are applied to the bogies themselves. Has a method been developed to provide a mechanism or apply mechanical braking force from the outside? If these mechanical braking methods are used, a large force will momentarily act on the trolley, causing negative effects on the trolley itself and the cargo being transported. Not only is this easy to apply, but also the forced airflow, which is the thrust source of the truck, is affected by the deceleration at the same time as the truck is braked, which has a negative effect on the entire system.

In addition, as a speed control method that does not adversely affect the entire system, the cross-sectional area of the deceleration control section formed in the middle of the pipe is made larger than the cross-sectional area of other pipe sections, and the forced air flow is increased. There is a system that allows the speed to flow without resistance, but in this case, all the carts that do not need to be decelerated are also decelerated, which has the disadvantage that the original purpose of speed control cannot be achieved.

In view of the above-mentioned points, the present invention uses a valve that damps the propulsive force due to forced airflow acting on the running bogie to maintain the pressure difference before and after the bogie at a constant state. It is an object of the present invention to provide a speed control device for an intra-pipe transport device using forced airflow, which enables speed control at a constant acceleration without adversely affecting the entire system.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

Reference numeral 1 denotes a conduit installed using a space under an elevated structure, and 2 indicates a pipe that slides into contact with a pressure receiving plate 5 having a cross-sectional area smaller than the cross-sectional area of the conduit 1. This is a cargo transport trolley having moving wheels 6 and anti-truck collision mitigation devices 7 protruding in the front and back directions at the front and rear thereof, and a blower (not shown) provided at an appropriate interval in the longitudinal direction of the pipe 1. The structure is configured to move along the axial direction of the pipe line 1 using a forced airflow generated in the pipe line 1 as a thrust source, and a pipe section IA in the middle of the pipe line 1 is provided with a An airflow bypass path 3 for bypassing the forced airflow from the upper side to the lower side in the direction of carriage movement is formed, and the peripheral wall portion 8 above the inlet portion 3a of the airflow bypass path 3 is formed in an upwardly expanding tapered shape, and the peripheral wall portion 8 is provided with a constant pressure valve 4 consisting of a linear actuator 9, an aluminum rod 10 that can move vertically along the inside of the linear actuator 9, and a resistance plate 11 provided at the lower end of the aluminum rod 10. , an inlet/outlet portion 3 of the airflow bypass path 3
b. The resistance plate 11 is formed by pushing up the resistance plate 11 when the pressure difference between the front and back of the trolley 2 within one person reaches the set pressure of the constant pressure valve 4. By bypassing the forced airflow through the gap with the peripheral wall portion 8, the pressure difference between the front and rear of the truck 2 is adjusted at a constant acceleration.

In summary, the speed control device in the intra-pipe transportation device using forced air flow according to the present invention is capable of
When speed control is performed depending on the situation between the bogies in the middle of the pipe line 1 in order to avoid approaching or separating them, a constant With the pressure valve 4, the airflow bypass path 30) inlet/outlet portions 3b, 3
a) Speed control can be realized while maintaining the pressure difference before and after the bogie 2 constant in the pipe section 1A. By applying a constant braking force, it is possible to perform deceleration braking at a constant acceleration, and at the same time, it is possible to ensure air flow and suppress adverse effects on the entire system due to speed control.

In addition, since the trolley 2 that does not require speed control can smoothly move one person through the pipe section as it is, the speed control is essentially controlled by the speed control force m corresponding to the interval between the trolleys. We were able to fully achieve our objectives.

[Brief explanation of the drawing]

The drawing is a cutaway side view of a main part illustrating an embodiment of a speed control device in a forced air flow intra-pipe transportation device according to the present invention. 1...Pipeline, 1A...Pipeline part, 2.
...Loggage transport trolley, 3...Airflow bypass path, 3a.・．． ．． ．． ．． Inlet part, 3b... One outlet part, 4... Constant pressure valve.

Claims (1)

[Claims] 1. In an intra-pipe transportation device using forced airflow, which is configured to forcibly move a load carrier 2 along the pipe 1 using forced airflow generated in the pipe 1 as a thrust source, the pipe An airflow bypass path 3 is formed in the middle of the airflow bypass path 3, and the inlet portion 3a of the airflow bypass path 3 is connected to the pressure before and after the trolley 2 within one person. A speed control device for an intra-pipe transport device using forced airflow, which features a constant pressure valve 4 that can maintain a constant difference.