JPS6167640A - Rear door open/close unit for container transporter - Google Patents

Abstract

PURPOSE:To improve safety of work by disengaging the dead point mechanisms upon dumping of container and opening the rear door upward while limiting rotation of rear door in the opening direction through function of said mechanism upon tilting of container. CONSTITUTION:In the container transporter, the dump frame rotatable around a hinge is coupled integrally with a container 1 mounted on the chassis 4. Here, the rear door 2 of the container 1 is pivoted openably upward by the pivot shaft 3 and coupled through first link mechanism A including the links 26, 28 to the rolling arm 34 journaled to the lower section of container 1. Upon dumping, the rear door 2 is opened through motion of a rolling arm 34 co-operating with a guide member 65. An arm 38 stopable to the rolling arm 34 in journaled to the lower section of container 1 and coupled through second link mechanism b having second rolling arm 60 journaled to the lower section of container 1 and a dead point mechanism 47.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention automatically opens the rear door of a container transport vehicle when the container is dumped, and when the container is laid down, the rear door automatically closes. It is used in the field of rear door opening/closing devices for container transport vehicles.

<Conventional technology> In conventional container transport vehicles, the rear door of the container opened downward, so when dumping and discharging large loads such as iron scrap or rocks, the rear door could become clogged and υF output could occur. There is a problem that the rear door or the upper part of the rear door may be damaged due to the load colliding with the rear door.

<Problems to be Solved by the Invention> The present invention solves the above-mentioned problems. The purpose is to have the rear door automatically open when the cargo is discharged and dumped, and then automatically close when the container is removed from the Noyano side.

<Means for Solving the Problems> In order to achieve the F-leg goal, the configuration of the present invention includes a dump frame that rotates around a hinge provided at the rear of the Noyano, and a dump frame that is mounted on the Noyano by appropriate means. In a container transport vehicle which is configured to integrally connect a container with a container and dump the upper container, the bottom part of the rear door of the container is supported by a hinge so that the rear door can be opened upward, and A first link mechanism connects a first swinging arm pivotally supported at the bottom of the container and the rear door, and when dumping the container, the first swinging arm is guided to open the rear door. A first guide member that rotates in the direction is provided on the Noyano side, and is further pivotally supported on the lower part of the container so that the
A locking arm that can be locked to the 8 moving arms, and -! While connecting the second crystal arm pivotally supported at the lower part of the bipedal conotena via a second link mechanism having a dead point mechanism in the middle,
When dumping the container, a support member is provided on the Noyano side that prevents the dead point mechanism from releasing the engaged state, and when the container is laid down, the dead point mechanism is placed in the engaged state. It is characterized in that a second guide member for rotating the second swing arm is provided on the Noyano side.

<Example> Embodiments of the present invention will be described based on the drawings.

In Figures 1 and 2, 1 is a container with a rear door 2 at the rear end.
is pivotally mounted on a pivot shaft 3 so that it can be opened and closed upward.

4 is a chassis, and this chassis 4 includes a Nyano frame 5 and a sub-frame 6 fixed on this Nyashi frame 5.
A hinge portion 7 is formed at the rear end of the sub-frame 6 to pivotally support a dump frame 11, which will be described later, and a guide roller 9 is pivotally attached to the hinge portion 7 via a support shaft 8. The main beams 10, 10 of the container 1 ride on the pair of left and right guide rollers 9.9, and are guided and supported when the container 1 is loaded onto the Nyano 4 side and when it is removed from the Nyano 4 side.

Reference numeral II denotes a dump frame whose rear end is pivotally connected to the sub-frame 6 on a support shaft of a hinge portion 7, and an intermediate frame I2 is pivotally connected to the tip of this dump frame 11 on a shaft 13. There is.

Reference numeral I4 is an L-shaped surface arm, which is pivotably connected to the vicinity of the tip of the intermediate frame 12 at a shaft 15, and has a hook I6 formed at the upper end of the tip arm 14. It is hung on a hook +417 protruding from the wall.

Reference numeral 18 denotes a 14th-pressure nolinder, which rotates the arm 14 along the axis 15 with respect to the intermediate frame 12 to operate from an orthogonal position to a bent state as shown in FIG.

19 is a second hydraulic nolinder, the end of which is connected to the subframe 6.
It is pivotally connected to the front part, and its tip is pivotally connected to a part of the intermediate frame I2 by a shaft 20, and by the expansion and contraction operation of this second hydraulic nolinder I9, the intermediate frame I2 rotates around the axis I3, and furthermore, the first hydraulic nolinda The arm 14 is expanded and contracted by the hydraulic cylinder I8.
is bent with respect to the intermediate frame 12, and the container l can be placed on the Nyano 4 side, or conversely detached and lowered to the ground side.

Also, 2! is a locking/disengaging mechanism interposed between the dump frame II and the bottom surface of the container I, and as shown in FIG. 2, the locking/disengaging mechanism 21 is switched to the locked state, and the second I! When the J press cylinder 19 is extended, the dump frame II, the intermediate frame 12, and the container I are tilted together, and the loaded object can be discharged in a dump state.

Next, in FIGS. 3 to 7, one embodiment of the rear door opening/closing device of the container 1 of the container transport vehicle described above is specifically shown.

As shown in FIG. 3, the rear end 22 of the side wall of the container I is tilted so that its lower part is forward and its upper part is rearward, while the rear door 2 is rotatable around the lower part of the rear door 2 using a pivot shaft 3. It is arranged so that it can be attached closely to the rear end 22 of the side wall.

Further, the temporary deck 23 is tilted rearward upward so that the rear end edge 23a is at a vertical midpoint height of the rear end surface of the container 1, and therefore the pivot shaft 3 is disposed at a vertical midway height near the rear end edge 23a. reactor. In addition, the rear door 2 has a triangular protruding piece 24.
or is formed.

In addition, a support shaft 42 is fixed to the lower part of the container (2), and a bracket (40.41) is attached to the support shaft 42 at a constant phase angle.
is fixed. A rotating shaft 25 is provided at the tip of one bracket 41, and a first
The swinging arm 34 and the rotating arm 35 are integrally fixed.

A tenth lug 36 is provided at the tip of the first swing arm 34 .

The tip of the rotating arm 35 is connected to the protruding piece 24 of the rear door 2.
The rotating arm 35 is connected to the rotary arm 35 via the first link mechanism A.
In other words, the operation of the first swing arm 34 and the opening and closing of the rear biI 2 are linked. The above-mentioned "il link machine #RA" is composed of a link 26, a swinging member 27, and a rick 28.

The swinging member 27 has its center supported by a shaft 31 in the lower part of the container 1 so as to be able to swing freely, and one end of the swinging member 27 and one end of the link 26 can be freely pivoted by a pin 30. At the same time, the other end of the link 26 is connected to the protruding piece 24.
It is rotatably connected to the bin 29. Further, one end of the link 28 is rotatably connected to the other end of the swinging member 27 by a pin 32. On the other hand, the other end of the lick 28 is rotatably connected to the tip of a rotating arm 35.

On the other hand, the bracket 40 fixed to the support shaft 42 has
A rotation shaft 39 is provided to which the base of the locking arm 38 and one end of the arm 43 are fixed. The distal end of the locking arm 38 can engage with the shaft 37 of the first roller 36 at the distal end of the first swinging arm 34 . Also, one peak of the second swinging arm 60 made of approximately triangular cedar can be freely rotated by the shaft 63 on the bracket 64 fixed to the lower part of the container 1 in front and lower than the support shaft 42 . It is supported by this shaft. A 20th ring 62 is provided at the corner of the second swinging arm 60, and the other corner of the second swinging arm 60 and the arm 43 that rotates integrally with the locking arm 38 are connected to the other corner of the second swinging arm 60. The distal end is connected by a second link machine lateral B having a dead point mechanism 47 in the middle, and the locking arm 38 is interlocked with the operation of the second swinging arm 60. The link 44 and the alignment member 45 are moved toward the second link machine vtB arm 43 and the second WzaJ arm 60.
, link 46, dead point mechanism 47 and link 4
It consists of 8. The moving member 45 has a bracket 5 whose center portion is fixed near the rear end of the lower part of the container l.
2 by a shaft 5I so that it can swing freely.

One end of the swinging member 45 is rotatably connected to one end of the rick 44 by a pin 50, and the link 44
The other end is rotatably connected to the tip of an arm 43 through a pin 49. One end of a link 46 is rotatably connected to the other end of the swinging member 45 through a pin 53, and the other end of the link 46 is fixed to a dead point mechanism 47. Then, attach one end of the rick 48 to the dead point mechanism 47 through the bin 59.
On the other hand, the other end of the biped link 48 is rotatably connected to the second swing arm, and another f (1 part) of the biped link 48 is rotatably connected to the bin 61.
is composed of a roughly doglegged base 55, a connecting portion 54, and a swing plate 56. A connecting portion 54 to which the link 46 is fixed is integrally fixed to one end of the base portion 55. The other end of the base 55 is rotatably connected to the tip of a protrusion 56b located at the middle of the three protrusions 56a, 56b156c provided on the impression plate 56 with a pin 57. Further, a roller 58 is provided at the tip of the lower protrusion 56c of the swing plate 56, and a link 4 is provided at the tip of the upper protrusion 56a.
8 are rotatably connected at one end by a pin 59. The dead point mechanism 47 has a corner 56d of the swing plate 56.
When the locking arm 3B is rotated counterclockwise above the center line of the link 46 shown by the dashed line in FIG. ■It has.

On the other hand, the Noyano 4 is provided with a first guide member 65.

This first guide il'65 hits the concave arc part 65b continuously formed in front of the horizontal side part 65a, and
The 10th lug 36 of the moving arm 34 is guided by contacting and rolling, and is rotated in the direction of opening the rear door 2 via the first link machine hWA.

Further, the Noyano-1 is provided with a second guide member 67 in front of the first guide member 65. The upper surface of the second guide part shrine 67 is composed of an inclined surface 67a that is inclined -I toward the front from the rear end and a horizontal surface 67b that continues in front of the inclined surface 67a. Furthermore, the support shaft 8 of the chassis 1
A backing member 66 is provided at the rear of the twist, and this backing member 66
The flat upper surface 66a of the roller 58 of the dead point mechanism 47 can come into contact with the flat upper surface 66a. When the container I is dumped around the spindle 8, the roller 58 of the dead point mechanism 47 is pressed by the upper surface (i6a) of the abutting member 66, and the swing plate 5G rotates clockwise around the bin 57. 68 is a spring that is stretched between the container 1 and the link 46 and urges the link 46 backward. be.

1- In the rear door opening/closing device having the configuration described above, the container 1 is now
When dumped, the container l tilts around the support shaft 8, as shown in FIG. As a result, the upper surface 66a of the contact member 66 presses the roller 58 of the dead point mechanism 47 upward, and the wetting plate 56 is rotated clockwise around the pin 57, swinging from the center line of the link 46. The center of the f (first part 56d) of the plate 56 is located upward, and the locked state of the dead point mechanism 47 is released.At the same time, the base 55 of the dead point mechanism 47 is displaced rearward, so that the second link mechanism B link 46, swinging member 45
Then, the first swing arm 34 of the locking arm 38 is disengaged from the shaft 37 of the tenth lug 36 via the link 44 .

Then, as the container I tilts, the rear n2 automatically begins to open while being restricted by the concave arc portion 65b of the first guide portion 65 due to its own weight, and as shown in Fig. 1'E5, the dumping angle becomes 16 degrees. Then, the 10th lug 36 of the first swing arm 34 separates from the concave arc portion 65b of the first guide member 65, and the downward restraint of the 10th lug 36 is released.

At the same time, the deck plate 23 and the inner surface of the rear door 2 become flush with each other. Furthermore, if the dumping angle is increased, the container 1 will be dumped with the rear door 2 flush with the deck board 23, as shown in FIG.

Conversely, when the container 1 is in the prone state, the second swing arm 60 is moved by the horizontal surface 67b of the second guide member 67 via the 20th lug 62, as shown in FIG.

The second link mechanism 13 is rotated clockwise in the figure, and the link 18 of the second link mechanism 13 is pulled to 1111 degrees. Therefore, the swing plate 56 of the dead point mechanism 47 is biased counterclockwise around the pinot 57, and the dead point mechanism
17 is activated and becomes locked.

Then, the link 46 of the second link mechanism B, the swinging member 1
5. The engaging 11° arm 38 is rotated counterclockwise through the lick 44 and the arm 43, and the 11th rotating arm;
4. Engage with the first lever 37 of the first [1-ra 36] 4'. Therefore, the first swing arm 311 is prevented from swinging, and the rear door 2 is brought into a closed state via the first link mechanism A.

Also, when the container 1 is loaded on the Noyano 1 and unloaded from above the shirt 4, the dead point mechanism 47 is in the engaged state, and the locking arm 38 is in the first swing arm, as shown in FIG. 34, and the rear door 2 is maintained in a closed state via the first link mechanism A.

It should be noted that the present invention can be modified in design other than the above-described embodiment, and as shown in FIG. A contact member 68 may be provided, with which the 20th ring 62 of the second swing arm 60 comes into contact.

Also, when the rear door 2 opens, the link 26 of the link mechanism A is used as a compression member, but as shown in FIG. However, the link 26 of the link mechanism A may be used as a tension member.

Alternatively, as shown in FIG. 10, a first guide member 65 may be provided on the dump frame 11, and the link 26 may be used as a tension member when the rear door 2 is opened.

In addition, as shown in FIG.
It is better to attach it directly to the shaft: 37.

In addition, the present invention also provides the tip arm 1 and the 11ir pressure nori nog 1.
8.19 etc. to load container 1, or switch the container to dump frame 1 by witch.
H) can be used for lifting type container transport vehicles.

<Effects of the Invention> As detailed in the detailed explanation of the present invention, when the container is loaded on A. No. 1 (from the ground 1) and the = 1 container is dumped,
The dead point mechanism is disengaged and the rear door opens upwards, so when dumping and discharging large loads such as iron scraps and rocks, the rear door and the sheep part can be easily removed without damaging them. Loaded items can be discharged smoothly and quickly.

Yota, when the container was lying on its side, Desotoboinoto +M
When the container is lowered from the top of the Noyano to the ground, or when the container is loaded from the ground onto the Noyano, it is restrained by the first swinging arm or locking arm and rotates in the direction to open the rear door. Since the rear door of the container opens and the cargo is not spilled, there is no chance of the cargo being spilled.

[Brief explanation of drawings]

Figures 1 and 2 are simplified side views for explaining the operation of the container transport vehicle, Figure 3 is a state diagram of an embodiment of the present invention when a container is mounted on a Noyano, and Figure 4 is Figure 5 is a diagram showing the opening of the rear door relative to the dumping angle. Figure 6 is a diagram of the state when the container is tilted to the maximum tilt angle. Figure 7 is a diagram of the state when the container is tilted to the maximum tilt angle. 8 is a side view of the embodiment of the pond, and FIGS. 9, 10, and 1+ are side views of other embodiments. l... Container, 2 - Rear door, 4... Noyano, 7...
Sheep, 11... Dump frame, 34... 1st II
Arm, 38... Locking arm, 47... Dead point mechanism, 60 Second swing arm, 65... First guide member, 66
- Abutting member, 67 - Second guide member, A...first link mechanism, B...second link mechanism.

Claims (1)

[Claims] (1) A container transport vehicle configured to dump the container by integrally connecting a dump frame that rotates around a hinge provided at the rear of the chassis and a container mounted on the chassis by appropriate means. A bottom part of the rear door of the container is supported by a hinge so that the rear door can be opened upward, and a first swing arm pivotally supported at the bottom of the container and the rear door are connected by a first link mechanism. On the other hand, when dumping the container, a first guide member is provided on the chassis side to guide the first swinging arm and rotate it in a direction to open the rear door, and a first guide member is provided on the chassis side, and a pivot support is provided at the bottom of the container. A locking arm that can be locked to the first swing arm and a second swing arm that is pivotally supported at the bottom of the container are connected via a second link mechanism having a dead point mechanism in the middle. On the other hand, when dumping the container, a support member is provided on the chassis side to release the engagement state of the dead point mechanism, and when the container is laid down,
A rear door opening/closing device for a container carrier, characterized in that a second guide member for rotating the second swinging arm in a direction in which the dead point mechanism is engaged is provided on the chassis side.