JPS59130784A - Swing-door fastening apparatus for truck - Google Patents

Abstract

PURPOSE:To obviate the necessity of a complicated control apparatus by installing a swing-door fastening apparatus with which a swing door is fastened at a closure position, in continuation to a swing-door opening and closing apparatus, thus permitting the swing-door opening and closing apparatus and the swing- door fastening apparatus to be installed integrally. CONSTITUTION:As for a swing-door opening and closing apparatus A, a bracket 4 is fixed onto a the rear surface of the basic edge of a swing door 2, and a connecting link 5 is in turnable ways connected. A rod 6 is connected in turnable ways with the connection link 5, and the front edge of the rod 6 is fixed with a hydraulic cylinder 7. The rear edge of the piston rod 12 of a small piston 10 in the hydraulic cylinder is attached onto an engagement lever 16. One edge of a connecting rod 19 is connected in turnable ways with the intermediate part of the engagement lever 16, and the other edge is connected in turnable ways with one edge of a bell crank 20 which is supported in turnable ways in the rear stay of a bed 1. The other edge of the bell crank 20 is connected in turnable ways with a connecting link 22 connected to an engagement lever 22.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cargo vehicle IJ such as a dump truck, cargo truck, truck, etc.
This relates to a v-door lashing device for lashing the field door of a IIJ vehicle in a closed position and releasing it from the closed lashing position.

In a cargo truck dedicated to dump trucks, the base end of the field door is pivoted on the edge of the cargo box by a nearly horizontal pivot shaft, and the field door is opened and closed up and down around the pivot shaft. One equipped with an opening-type Kisaragi device is known.

Trucks equipped with such Kisaragi devices are designed so that the field door can be opened even when the cargo box is not tilted, in order to allow long items to be loaded, and when loading earth and sand, etc. In order to drain the water, it is desired to be able to tilt the cargo box while keeping the field door closed.

By the way, in conventional freight vehicles, a copper P lashing device is separately provided for lashing the cargo box with the cargo box tilting device (separate from 6!). In addition, a complicated control device was required to operate the copper P switchgear and the monthly lashing device in a fixed l1lu order.

The present invention aims to solve such problems,
An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment in which the present invention is applied to a rear dump truck. As shown in the figure, at the rear end of the cargo box 1, a rear button 2 is attached to a horizontal pivot spider (6). The rear opening of the cargo box 1 began to be opened in an upward-opening manner.

Next, the opening/closing wish for the furnace will be described. A bracket 4 is fixed to the gauze surface of the base end of the fan door 2, and a link 5 is freely connected to the bracket 4.

Further, a rod 6 is connected to the connecting link 5 so as to be freely rotated by ω, and the end of the rod 6 is fixed to the hydraulic cylinder 7 . This hydraulic cylinder 7 is connected to the cargo box 1.
It is slidably supported by a support stand 8 provided at the bottom of the.

Inside this hydraulic cylinder Z, a large piston 9 and a small piston 10 with a smaller effective area are provided.The piston rod 11 of the large piston 9 extends forward, and its front end is connected to the cargo box 1. has been done. A piston opening 12 of the small piston 10 projects rearward from the hydraulic cylinder 7, and its rear end can come into contact with a single thread 11 lever 16, which will be described later. Large and small pistons 9.1
0 and each end wall of the hydraulic cylinder 7, an adjusting spring 13, 14 is compressed in each case.

An end of a locking lever 16 is supported by a fixing pin 17 in a rotating manner on the cargo box 1 . This locking lever 1
The free end of 6 is such that the rear end of the piston/rod 12 of the small piston 10 mentioned above can come into contact with it, and between the locking lever 16 and the cargo box 1, there is a contact plate. A tension spring 18 is provided for retention. Further, one end of a connecting rod 19 is rotatably connected to the intermediate portion of the locking lever 16, and the other end of the connecting rod 19 is rotatably supported within the rear support column of the cargo box 1. The bell crank 20 is rotatably connected to one end of the bell crank 20.

Furthermore, the other end of the bell crank 20 is rotatably connected to one end of a connecting link 21, and the other end of this connecting link 21 is
One end is rotatably connected to the intermediate portion of a locking lever 22 rotatably supported by the rear end of the rear column of the cargo box 1 .
The free end of this locking lever 22 is adapted to engage with a locking pin 26 fixed to Kisaragi 2 to securely lock Kisaragi 2.

When the piston rod 12 of the small piston 1U protrudes rearward and is in contact with the retaining lever 16, the retaining lever 16
The clockwise rotation of is prevented, and the locking lever 22 is held at the actual positions fM and iq in the figure through the connecting rod 19 and the link 21 of the Pel crank [J, r% t+'i. The lever 22 and the thread locking pin 26 are engaged to close the Kisaragi 2 and secure it at the pilgrimage position. 1. Are these actually Gotogo? This constitutes J Assets B.

Hydraulic cylinder 7 (・1, is a normal single-acting type, and is operated by a sand switching valve.
The supply and discharge of /li+ are controlled. Figure 2 shows an example of the hydraulic system or 11 circuit.
Production η'+1 /lit is N IH tank T force) rahon 1
, '& m driven by motor lt4 p i1
The cut is sent to the 1-pressure prefectural valve ■ by the 1-pressure pump p.

Kiriho J-V is from the solenoid operation building, and by energizing g1 solenoid l' SOL l.
By supplying oil to the hydraulic cylinder 7 and energizing the second solenoid 5QL2, the position is changed to the F position i+t by 9 times, and the oil in the hydraulic cylinder 7 is It is possible to dispense 1 liter of hydraulic oil into tank T and S.

Now, if the first solenoid 5OLI is energized, the hydraulic cylinder 7 is supplied with high pressure hydraulic oil. Then,
A large force is applied to the large piston 9, trying to push it forward, but since the piston rod 11 is supported by the bamboo rod 1, the large piston 9 does not move, and the reaction force pushes the hydraulic cylinder 76c backward. Moving. Thereby, pivot v ) + to Kisaragi 2 via rod 6 and connecting link 5
The rotational moment around l#i+3 is applied, and Kisaragi 2 rotates upward, closing the opening of the loading box 1. During this period, the small piston 10 hardly operates due to the difference in effective LIii m between the large piston 9 and the small piston 1U. Kisaragi 2 is vertical! Rotate until dust 1. hand(
When the end edge of the piston 1 is thus stopped, the small piston 10 begins to move sideways, and the rear end of the piston/rod 12 comes into contact with the locking lever 16 and pulls it around the fixed pin 17. rotate it counterclockwise.

As a result, the locking lever 22 is rotated clockwise via the connecting rod 19, bell crank 20, and connecting link 1.
iJJL, , f engages with the bin 26 to secure Kisaragi 2.

Next, when the second solenoid 5QL2 is energized <6-4, the working oil in the hydraulic cylinder Z is brought to the discharge port I function.

Then, first, the small piston 10 of the small Tfa-ti1 moves forward, and its piston opening is cut down (D 12) Ft
'klJ, so) the yarn city lever 16 rotates clockwise due to the tensile force of the tension spring 18 and increases by 1. with this,
Jinkiyoshi Rod 19, Bell Crank 20, IIl! The lever f and the lever 22 are moved counterclockwise through the old link 21.
j 1ljJ L, as shown by the imaginary line in FIG. The li of encouragement 2! ! l
The bamboo shoots are released.

As a result, the fan door 2 turns downward due to its own weight [11],
The cargo box 1 is opened, and during this time the hydraulic cylinder 7
The internal volume is very small, and the internal volume 17JJ711 is returned to the Ti1l tank T through the switching valve (■).

As mentioned above, it is possible to install the Kisaragi switchgear directly and the Hata F3 fixing device θ in one piece, and also the IJrl h self-swinging door opener 1" and Kisaragi lashing. It is not necessary to install the devices in a fixed order ('I; !ILIJ).

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional side 11 showing an embodiment of the Kisaragi solid state equipment according to the present invention. FIG. 1 and FIG. 2 are hydraulic circuit diagrams showing an example of the hydraulic control circuit used in the device. 2...Kisaragi, A...Kisaragi switchgear, B...
Asato fixed name edition 〇 origin person ShinMaywa Industries Co., Ltd. Tanso Uda negative third department

Claims (1)

[Claims] It consists of a copper P opening/closing device that can close the field door to the bamboo broom opening, and a field door lashing device connected to the copper P switching device and capable of securing the field door in the closed position. After the door opening/closing device closes the field door, the copper P securing device secures the field door in the closed position, and the EjU fan door Kisaragi device W locks the field door in the closed position.
A copper P lashing device for a freight vehicle, characterized in that, after three doors lashed at 1 are released from the lashing, the fjjl sliding door opening/closing device opens i%j door L1.