JPH0240525B2 - KONTENANORYADOAJIDOKAIHEIKIKO - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic rear door opening/closing mechanism for a container mounted on a heavy goods vehicle.

[Conventional technology]

Conventionally, the rear doors of containers mounted on heavy transport vehicles did not open and close automatically, but were operated manually.

[Problem that the invention seeks to solve]

By the way, as shown in FIG. 1, the container attachment/detachment device mounted on the heavy goods transport vehicle fixes the container 12 to the bail part 1 attached to the tip of the piston rod 3 that reciprocates in the hydraulic cylinder 2. The understructure 7 is attached to the hook portion 23 formed on the hook station 8 of the understructure 7, and the understructure 7 is attached to the tilting frame 24.
It has a structure that allows it to slide along the top surface of the. That is, the understructure 7 is provided with a plurality of hook stations 8 from the front to the rear.
The hook part 23 of the frontmost hook station 8
The bail part 1 is engaged with the bail part 1 to be pulled up, and the bail part 1 is then successively engaged with the hook part 23 of the hook station 8 at the rear of the understructure 7 to be pulled up.

However, since the bail section 1 is used only for attaching and detaching the containers mentioned above, various other uses have been investigated.

[Means for solving problems]

Therefore, the present invention attempts to automatically open and close the rear door of a container by utilizing the operation of the bail portion 1, and its structure is such that the bail portion 1 is attached to the tip of a piston rod 3 that reciprocates in a hydraulic cylinder 2, The lever 6, which is rotatably operated by the bail part 1 which slides while being pushed up on the bail sliding surface 5 by the bail pushing up spring 4, is attached to a hook provided at a plurality of locations from the front to the rear of the understructure 7. A hook station 8 provided at the rearmost part of the stations 8 is rotatably provided, and this lever 6 is connected to one end of a control cable 10 via a clevis 9.
A latch 17 that engages with a door latch 15 of the rear door 11, which is provided on the side plate 13 of the container 12 so as to be freely rotatable with a slight inclination to the rear, is rotatably provided by applying a downward tensile force to the side plate 13 of the container 12. At the same time, a door closing arm 16 is connected to the other end of the control cable 10 via a clevis 18 to the latch 17 and protrudes downward from the rear door 11, and is arranged in the sliding area of the bail portion 1. It is said that

[Effect]

As a result of the above measures, the bail part 1 slides on the bail slide surface 5 in a pushed up state, and this sliding of the bail part 1 causes the latch 17 to move and disengage the door latch 15 of the rear door 11. By this,
The rear door 11 is automatically rotated and operated to open, and the sliding of the bail portion 1 pushes the door closing arm 16, so that the rear door 11 is automatically rotated and operated to close.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be explained below with reference to the drawings showing one embodiment.

Reference numeral 1 denotes a bail portion, which is attached to the tip of a piston rod 3 that reciprocates in a hydraulic cylinder 2, and is configured to slide on a bail slide surface 5 while being pushed up by a bail push-up spring 4.

Reference numeral 6 denotes a lever that is rotatably operated by the bail portion 1, and is rotatably attached to the hook station 8 provided at the rear end of the hook stations 8 provided at multiple locations from the front to the rear of the understructure 7. It is connected to one end of the control cable 10 via the crepis 9.

Reference numeral 11 denotes a rear door of the container 12, which is provided on the side plate 13 of the container 12 with a slight inclination toward the rear so as to be rotatable by a shaft 14, and has a door latch 15 at its upper end and a door closing arm 16 at its lower end. has been established.

Reference numeral 17 denotes a latch that engages with the door latch 15 of the rear door 11, and is rotatably provided with a pin 18 to apply downward tension to the side plate 13 of the container 12, and is connected to the control cable via a clevis 19. 10 is connected to the other end. In this embodiment, a coil spring 20 is used as a means for applying a downward tensile force to the latch 17.
are using.

Further, the door closing arm 16 of the rear door 11
protrudes downward from approximately the center of the lower part of the rear door 11 and is arranged in the sliding area of the bail part 1, so that it comes into contact with the bail part 1 and is rotated when the bail part 1 slides. I have to.

In addition, 21 is a rear door cradle provided at the rear of the container 12, which acts as a stopper when the rear door 11 is opened, and 22 is a rear door/latch cradle provided on the side surface 13 of the container 12. This serves as a stopper when the rear door 11 is closed and a lower limit stopper for the latch 17.

Next, the operating state of the container rear door automatic opening/closing mechanism according to the present invention will be described.

First, when the bail portion 1 is moved back from position A to position B in FIG. 5, and then moved forward from position B to position C, the lever 6 is displaced from the closed operation state (solid line) to the open operation state (imaginary line). Then, pull the control cable 10 connected to the lever 6 to release the latch 17.
When the latch 17 and door latch 15 are disengaged, the door 11 will fall backwards as it is slanted.
It is received by the door pedestal 21 and is in an open state.

On the other hand, while the bail part 1 is being retreated from the C position to the D position, the lever 6 is released from the bail part 1, so the latch 17 is rotated by the tensile force of the coil spring 20 and its front part is pulled down. The closed state (solid line) is reached, and the control cable 10 connected to the latch 19 is pulled to rotate the lever 6 to return to the closed state (solid line).

Further, while the bail part 1 is retreating from the D position to the E position, the bail part 1 pushes the door closing arm 16 and the door 11 rises while rotating.
Subsequently, the door latch 15 overcomes the tensile force of the coil spring 20 and pushes up the latch 17, and engages with the latch 17, causing the door 11 to stand up and be received by the stopper 22 to enter the closed operating state (solid line).

The lifting of the container 12 by the bail part 1 is carried out by switching the engagement of the bail part 1 with the hook part 23 formed on the hook station 8 other than the hook station 8 provided at the rearmost part of the understructure 7. There is.

〔Effect of the invention〕

The automatic rear door opening/closing mechanism for a container according to the present invention is constructed as described above, in which the latch 17 is interlocked with the movement of the bail part 1, and the door closing arm 16 is pushed by the movement of the bail part 1. As a result, the rear door 11 is automatically opened and closed, and the operator can operate it from inside the cabin of the heavy goods transport vehicle, which has excellent workability and safety effects.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a heavy goods carrier carrying a container equipped with an automatic rear door opening/closing mechanism according to the present invention, Fig. 2 is a side view thereof, and Fig. 3 is a perspective view of an understructure that secures the container. , Figure 4 is a perspective view showing the main parts of the understructure, Figure 5 is an explanatory diagram showing the rear door automatic opening/closing mechanism as seen from the side, and Figure 6 is the rear door automatic opening/closing mechanism viewed from the rear. FIG. DESCRIPTION OF SYMBOLS 1...Bail part, 2...Hydraulic cylinder, 3...Piston rod, 4...Bail push-up spring, 5...Bail slide surface, 6...Lever, 7...Understructure, 8...Hook station, 9...Crevice, 10...Control cable , 11...Rear door, 12...Container, 13...Side plate, 15...Door latch, 16...Door closing arm, 17...Latch, 19
...clevis.

Claims (1)

[Claims] 1 A lever 6 that is attached to the tip of a piston rod 3 that reciprocates in a hydraulic cylinder 2 and is rotatably operated by a bail section 1 that slides while pushing up a bail slide surface 5 by a bail push-up spring 4.
is rotatably provided on the rearmost hook station 8 of the plurality of hook stations 8 provided from the front to the rear of the understructure 7, and the lever 6 is connected to the control cable 10 via the clevis 9. A latch 17 is connected to one end of the container 12 and engages with a door latch 15 of the rear door 11, which is rotatably provided on the side plate 13 of the container 12 with a slight rearward inclination.
The latch 17 is connected to the other end of the control cable 10 via a clevis 19, and protrudes downward from the rear door 11. An automatic rear door opening/closing mechanism for a container, characterized in that a door closing arm 16 is disposed in a sliding area of the bail portion 1.