JPS63151553A - Container self loading and unloading device of cantainer car - Google Patents

Abstract

PURPOSE:To increase the handling weight of a container in spite of many space restrictions and to simplify the structure of a captioned device by loading and tilting the container by means of a common telescopic hydraulic cylinder in a container car. CONSTITUTION:A telescopic hydraulic cylinder 40 is expanded to unload the container 32 loaded on a container car 10. In the first step, a lift arm 26 is swung upward around the point 28 linking the arm 26 and an intermediate arm 22 with the arm 22 held to be at rest. In the second step, the arms 22 and 26 are prevented from the relative swing around the point 28 linking both arms by a stopper means and are integrally swung around the point 24 linking a dump arm 16 and the intermediate arm 22. Along with the swing of the lift arm 26 the container 32 has its front section pushed backward until the rear end reaches the ground and then is unloaded from the container car 10. The container 32 unloaded can be loaded by performing the reverse process in unloading.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a self-supporting container attachment/detachment device for lifting and lowering a container onto and from a loading platform in a container automobile.

[Prior Art] A conventional container self-detachment device for a container vehicle (e.g., Japanese Patent Laid-Open No. 49-49326) includes a dump arm rotatably coupled to a rear end of a frame at a rear end; A lift that has an L-shaped side surface shape, is rotatably connected to the front end of a dump arm at one end of the L-shape, and has a hook on the other end of the L-shape that can be hooked onto the upper part of the front part of the container. The lift arm includes an arm and a telescoping cylinder rotatably coupled to the frame and the lift arm at front and rear ends, respectively. When loading and unloading containers onto and from the loading platform of a container vehicle,
The telescopic cylinder is extended and contracted, and the lift arm is rotated around the connection point with the dump arm.

Furthermore, in Japanese Patent Application Laid-Open No. 53-142718, a telescoping cylinder for container removal and removal is arranged at the rear of the frame separately from a telescoping cylinder for dumping (tilting) the container, and a lift arm and a frame are connected to each other at both front and rear ends. It is rotatably connected to the

[Problems to be Solved by the Invention] When detaching the attached container, the smaller the distance 122 from the rotation coupling point of the front end of the dump arm to the hooking point of the container to the lift arm, the more When installing a detached container, the distance Q5 from the pivot point of the front end of the dump arm to the axis of the telescopic cylinder is large.

In addition, the smaller the distance 06 from the rotational connection point of the front end of the dump arm to the hooking point of the container to the lift arm, the greater the mounting force and detachment force of the container will be for the same thrust of the telescopic cylinder, making it easier to handle. The weight of the container can be increased. However, due to space constraints, such Q2. Q5. Q6 cannot be appropriately increased or decreased, making it difficult to sufficiently increase the weight of the container that can be handled by the container self-detachment device.

Furthermore, in the above-mentioned Japanese Patent Application Laid-Open No. 53-142718, it is necessary to provide a telescoping cylinder for container removal and removal separately from a telescoping cylinder for dumping (tilting) the container, which is disadvantageous in terms of cost and structure.

The objective of this invention is that despite space constraints,
To provide a container self-adhesive device for a container automobile, which can increase the weight of a container that can be handled and can attach and tilt the container using a common telescopic cylinder.

[Means for Solving the Problems] The self-container attachment/detachment device for a container vehicle according to the present invention includes a dump arm rotatably coupled to the rear end of the frame at the rear end, and a dump arm at the rear end. an intermediate arm rotatably connected to the front end of the intermediate arm, and an L-shaped side surface, one end of the L-shape is rotatably connected to the front end of the intermediate arm, and the other end of the L-shape is a container. a lift arm equipped with a hook that can be hooked on the upper part of the front part of the lift arm; a stopper means for restricting the rotation of the lift arm with respect to the intermediate arm; It has a telescopic cylinder.

[Operation] When detaching a container attached to a container vehicle, the telescopic cylinder is extended. As a first step,
The intermediate arm remains stationary while the lift arm pivots upwardly about its pivot point of connection with the intermediate arm. As a second step, the intermediate arm and the lift arm are prevented from relative rotation around the rotational connection point between them by the stopper means, and rotate integrally around the rotational connection point of the dump arm and the intermediate arm. move. As the lift arm rotates, the front part of the container is pushed backward, the rear end of the container touches the ground, and the container is lowered from the container vehicle. When attaching a container that is in a detached state, the process is reversed to that when detaching it.

[Example] Hereinafter, the present invention will be described with reference to embodiments shown in the drawings.

FIG. 1 shows a container self-detachment device according to an embodiment, in which a container automobile 10 is attached to a tire 1 through a suspension.
The frame 14 is supported by 2. The dump arm 16 is coupled at its rear end to the rear end of the frame 14 for rotation about a pivot point 18, and the roller 20 is pivoted about a pivot axis of the pivot point 18. is attached to the rear end of the dump arm 16. The intermediate arm 22 is coupled at its rear end to the front end of the dump arm 16 for rotation about a pivot point 24 . The lift arm 26 has an L-shaped side surface shape, and is connected to the front end of the intermediate arm 22 at the rear end of the lower side of the L shape so as to rotate around the rotation coupling point 28, and at the upper end of the side side. It has a hook 30 at the end. The rectangular parallelepiped-shaped container 32 includes rollers 34 and a front support section 35 at the rear end and front end of the lower surface, respectively. The shaft 36 is fixed to the tip of a bracket 38 extending forward from the upper end of the front surface of the container 32, and can be hooked onto the hook 30.

The telescopic hydraulic cylinder 40 is disposed in front of the dump arm 16, and is rotatably coupled to the frame 14 and the L-shaped lower side of the lift arm 26 at the front and rear ends, respectively.

As shown enlarged in FIG.
A stopper means 46 is provided for limiting the relative rotation angle between the lift arm 26 and the lift arm 26. The stopper means 46 includes a cylindrical projection 48 that is fixed to the rear end of the L-shaped lower side of the lift arm 26 and projects laterally, and a recess that is formed on the front edge of the intermediate arm 22 and is capable of locking the cylindrical projection 48. The cylindrical protrusion 48 including 50 and the recess 50 may be provided on the intermediate arm 22 and the lift arm 26, respectively, contrary to the case shown.

The process of detaching the container 32 from the container vehicle 10 and lowering it onto the ground 52 will be described in accordance with the order of (a) to d) in FIG. 1.

In FIG. 1(a), the telescoping hydraulic cylinder 40 is retracted and the container 32 is placed horizontally on the frame 14.

From the state shown in FIG. 1(a), the telescopic hydraulic cylinder 40 begins to extend. At this time, the cylindrical projection 4 of the lift arm 26
8 is apart from the recess 50 of the intermediate arm 22, so as the telescopic hydraulic cylinder 40 extends, the lift arm 26
pivots upwardly relative to the intermediate arm 22 about a pivot point 44 . When the lift arm 26 rotates relative to the intermediate arm 422 by a predetermined value or more, the cylindrical projection 48 fits into the recess 50 and becomes engaged with the recess 50, as shown in FIG. 1(b). Thereby, from this point on, as the telescopic hydraulic cylinder 40 expands, the intermediate arm 22 and the lift arm 26 rotate integrally around the rotational connection point 24. The container 32 is pushed backwards by the hook 30, thereby.

While its lower surface is supported by rollers 20, it gradually lowers its rear end and moves rearward.

In FIG. 1(C), the rollers 34 of the container 32 are on the ground 5.
2, and thereafter, the rollers 34 support the rear end of the container 32 while rolling on the ground 52, and the container 32 moves rearward.

In FIG. 1(d), the front support 35 rests on the ground 52. The telescopic hydraulic cylinder 4o continues to extend thereafter, so that the shaft 36 is disengaged from the hook 3o.

When loading and mounting the container 32 on the ground 52 onto the container vehicle 10, the steps shown in FIGS. 1(a) to 1(d) are performed in reverse.

FIG. 3 shows a conventional container self-attachment/detachment device for a container vehicle. In the conventional container self-detachment device, the intermediate arm 22 is not provided, and the front end of the dump arm 16 is connected to the rear end of the L-shaped lower side of the lift arm 26 so as to be rotatable around the rotation connection point 54. There is. FIGS. 3(a) to 3(c) sequentially show the process of detaching the container 32 attached to the container vehicle IO and lowering it onto the ground 52 in a conventional container self-detachment device, in which the telescopic hydraulic cylinder 40 From the start to the end of the lift arm 2
6 rotates around a rotational connection point 54 throughout.

FIG. 4 shows the dump-up state of the container 32 in the container self-attachment/detachment device for a container vehicle according to the embodiment of the present invention. are locked to each other, and the lower sides of the L-shape of the dump arm 16, intermediate arm 22, and lift arm 26 are arranged substantially in a straight line.

In this manner, as the telescopic hydraulic cylinder 40 expands, these three members rotate integrally around the rotational connection point 18.

FIG. 5 shows a dumped-up state of the container 32 in a conventional container self-detachment device for a container vehicle. When the container 32 is brought into the dumped-up state, the dump arm 16 and the lift arm 26 are locked to each other and are rotationally connected. Rotates integrally around point 18.

FIGS. 6(a) and 6(b) show the specifications of each part of the embodiment and the conventional container self-attachment/detachment device when the container 32 is removed from the attached state. Each symbol is defined as follows.

01: A straight line passing through the rotational connection point 42 and the rotational connection point 44,
That is, the distance Ω2 from the rotational connection point z8 or the rotational connection point 54 to the axis of the telescopic hydraulic cylinder 40: rotational connection point 2
8 and the shaft 36: Distance Fl from the shaft 36 to the point of contact between the container 32 and the roller 20. Thrust force F2 when the telescoping hydraulic cylinder 40 extends; Force in a direction perpendicular to Ql due to the extension of the telescoping hydraulic cylinder 40. F3: Force perpendicular to Q3 due to expansion of the telescopic hydraulic cylinder 40 θ1: Intersection angle between F2 and F3 W: Weight of the container 32 H; Distance from the top surface of the frame 14 to the bottom surface of the container 32 L: Rotation connection point Distance Q4 between 18 and the cylindrical protrusion 48: Vertical distance from the pivot point 18 to the vector W. Therefore, the following equation holds true.

T1=F1 umbrella Q However, T1 is the rotational force of the lift arm 26 due to the extension of the telescopic hydraulic cylinder 40.

F2=T1/Q2 F3=F2 cos θ1°W=F3* (Q3/Ω4) In (a) and (b) of Fig. 6, it is assumed that Fl as the thrust of the telescopic hydraulic cylinder 40 is equal, and Ql is H Assuming that they are equal, α3. It is assumed that a4 and θ1 are equal on the assumption that L is equal. Therefore, (a
) and (b), Ql has a smaller value in the case of FIG. 6(a) because the intermediate arm 22 is interposed between the dump arm 16 and the lift arm 26. As a result, in the case of FIG. 6(a), compared to the case of FIG. 6(b),
F2, F3, and W become larger. Therefore, despite using the telescopic hydraulic cylinder 40 with the same thrust and with the limited dimensions of H and L, the present invention increases F3 and reduces the weight of the container 32 that can be removed from the installed state. can be increased.

FIGS. 7(a) and 7(b) show the specifications of each part of an embodiment and a conventional container self-attachment/detachment device for a container vehicle when the container 32 is attached to the container vehicle 10. Each symbol is defined as follows.

Q5: A straight line passing through the rotational connection point 42 and the rotational connection point 44,
That is, the distance I26 from the rotational connection point 28 or the rotational connection point 54 to the axis of the telescopic hydraulic cylinder 40: the distance Ql between the rotational connection point 24 or the rotational connection point 54 and the shaft 36; the distance between the shaft 36 and the roller 34; Distance F4: Thrust force when the telescopic hydraulic cylinder 40 contracts F5: Force in a direction perpendicular to Q6 due to the contraction of the telescopic hydraulic cylinder 40 F6: Force in a direction perpendicular to Ql due to the contraction of the telescopic hydraulic cylinder 40 θ2; F5 and F6 Intersection angle W: Weight of container 32 Therefore, a linear equation holds true.

T 2 =F4 skewer 25 However, T2 is the rotational force of the lift arm 26 due to contraction of the telescopic hydraulic cylinder 40.

F5 = T2/Q6 F6 = F5 umbrella COS θ2 W = F6 (Q7/Q4) In (a) and (b) of Fig. 7, F4 as the thrust of the telescopic hydraulic cylinder 40 is assumed to be equal, and Q6 and Q7 are It is assumed that the dimensions of the containers 32 are equal.

Therefore, in Fig. 7(a) and (b), Fig. 7(a)
), the intermediate arm 22 is interposed between the dump arm 16 and the lift arm 26, so Q5 is larger and a6 is smaller.

As a result, in the case of FIG. 7(a), T2 and F5 become larger than in the case of FIG. 7(b). Therefore, despite using the telescopic hydraulic cylinder 40 with the same thrust,
In this invention, F6 is increased, and the weight of the container 32 that can be attached from the detached state can be increased. In addition, in the conventional container self-attachment/detachment device, when Ω2 is decreased in order to increase the detachment force, Q6 increases, and it is difficult to increase both the detachment force and the attaching force.

FIG. 8 shows a situation when the intermediate arm 22 is rotated downward with respect to the dump arm 16, that is, when the intermediate arm 22 is reversely bent. When the container vehicle 10 is stopped on a slope or the like with its front end lowered, the intermediate arm 22 may dump around the rotational connection point 24 depending on the forward tilt angle of the container vehicle 10 and the upward direction of the telescopic hydraulic cylinder 40. There is a risk that it will not rotate upward relative to the arm 16 and will bend backwards as shown in FIG.

FIG. 9 shows a mechanism for preventing reverse bending of the intermediate arm 22. The stopper 56 is provided to protrude from the side surface of the intermediate arm 22,
If the intermediate arm 22 is likely to rotate in the reverse bending direction,
It comes into contact with the upper surface of the front end of the dump arm 16 to prevent reverse bending. Note that the stopper 56 may be provided on the dump arm 16 side.

FIG. 10 shows another mechanism for preventing the intermediate arm 22 from bending in reverse. The vertical distances from the upper surface of the dump arm 16 downward from the rotational connection point 24 and the rotational connection point 28 are respectively hl,
h2 and h3 tonnage h2-h1, then h2>h
hl and h2 are set to be 1. The larger h3 is, the stronger the tendency of the intermediate arm 22 to rotate upward around the rotation coupling point 24 when it is pulled forward, and the more effective the intermediate arm 22 is in preventing reverse bending.

11(a) to 11(c) sequentially show the states in which the intermediate arm 22 and the lift arm 26 rotate normally when the container 32 is removed. In the stage (a), the lift arm 26 rotates upward relative to the intermediate arm 22 around the rotation coupling point 28, and in the stage (b), the cylindrical projection 48 fits into the recess 50 and is locked. (C)
At the stage , the intermediate arm 22 and the lift arm 26 rotate integrally with respect to the dump arm 16 around the rotation coupling point 24 .

FIGS. 12(a) to 12(c) sequentially show the states when an abnormality occurs in the rotation of the intermediate arm 22 and the lift arm 26 when the container 32 is removed.One-time movement score 28 An intermediate arm 2z and a lift arm 26 are located near the
If there is a counterfeit, etc., it may occur at the stages (a) and (b) before the cylindrical projection 48 is locked in the recess 50, that is, at the initial stage of expansion of the telescopic hydraulic cylinder 40.

The intermediate arm 22 and the lift arm 26 rotate integrally, and when the angle of the integral rotation reaches a certain degree, the intermediate arm 22 and the lift arm 26 bend at the intermediate arm 22, and (C ),
The container 32 also descends rapidly, which is very dangerous.

FIG. 13 shows a device for preventing the intermediate arm 22 and lift arm 26 from rotating together at the initial stage of extension of the telescopic hydraulic cylinder 40. An extension plate 58 is fixed to the lower surface of the rear end of the L-shaped lower side of the lift arm 26. When the intermediate arm 22 and the lift arm 26 rotate together around the rotation coupling point 24 at the initial stage of extension of the telescopic hydraulic cylinder 40 due to the heeling of the lift arm 26, etc., the tip of the extension plate 58 is dumped. The moment hits the lower corner of the front end of the arm 16 and causes the lift arm 26 to rotate around the rotation coupling point 28, so that the intermediate arm 22 and the lift arm 26 are integrated at the initial stage of extension of the telescopic hydraulic cylinder 40. Rotation is prevented.

[Effects of the Invention] As described above, according to the present invention, by interposing the intermediate arm between the dump arm and the lift arm, it is possible to
Distance I2 to the point where the container is hooked to the lift arm
2, and the distance 1 from the pivot point of the front end of the dump arm to the axis of the telescopic cylinder when installed.
125 and decrease the distance Q6 from the pivot point of the front end of the dump arm to the point of hooking it to the container lift arm, which makes it possible to handle it despite space constraints. It is possible to increase the weight of the container.

Furthermore, in this invention, the telescoping cylinder is disposed in front of the dump arm and is rotatably connected to the frame and the lift arm at the front and rear ends, respectively, so that the common telescoping cylinder can be used to attach and detach the container and tilt it. can be implemented, the structure can be simplified, and costs can be reduced.

[Brief explanation of the drawing]

(a) to (d) of FIG. 1 are diagrams showing in order the states in which a container attached to a container vehicle is detached and lowered onto the ground in the container self-detachment device according to the embodiment; FIG. 2 is an enlarged view showing the intermediate arm and its vicinity in FIG. 1. 3(a) to 3(c) are diagrams sequentially showing the states in which a container 32 attached to a container vehicle is detached and lowered onto the ground in a conventional container self-detachment device; FIG. 4 is a diagram showing a container dump-up state in the container self-removal device according to the embodiment, FIG. 5 is a diagram showing a container dump-up state in a conventional container self-detachment device, and FIGS. 6(a) and (
b) is a diagram showing the specifications of each part of the embodiment and the conventional container self-detachment device when the container is removed from the attached state, and Figures 7 (a) and (b) are the diagrams when the container is attached to the container car. FIG. 8 is a diagram showing the specifications of each part of the embodiment and the conventional container self-detachment device; FIG. 8 is a diagram showing the case where the intermediate arm is reversely bent when the telescopic hydraulic cylinder is extended;
FIG. 9 is a diagram showing the intermediate arm and lift arm when equipped with a mechanism for preventing reverse bending of the intermediate arm, FIG. 10 is a diagram showing another mechanism for preventing reverse bending of the intermediate arm, and FIG. 11(a)
Figures 12(a) to 12(c) show the states in which the intermediate arm and lift arm rotate normally when the container is removed, and Figures 12(a) to 12(c) show the intermediate arm and the lift arm when the container is removed. Figures 13(a) to 13(c) sequentially show the states when an abnormality occurs in the rotation of the lift arm, and Figures 13(a) to 13(c) show the integral rotation of the intermediate arm and lift arm at the initial stage of extension of the telescopic hydraulic cylinder. It is a figure showing the device which prevents. 10... Container car, 14... Frame, 16
... Dump arm, 22 ... Intermediate arm, 24,2
8... Rotating connection point, 26... Lift arm, 30...
...Hook, 32...Container, 4o...Telescopic hydraulic cylinder, 46...Stopper means. 10...Container car 14...Frame 16...Dump arm 22...Intermediate arm 24.28...Rotation connection point 26...Lift arm 30...Hook 32...Container 40 ...Telescopic hydraulic cylinder Fig. 3 (a) Pier Fig. 4 Fig. 6 Fig. 6 (a) Fig. 6 (b) Fig. 8 Fig. 10 Fig. 6

Claims (5)

[Claims] (1) A dump arm rotatably connected to the rear end of the frame, an intermediate arm rotatably connected to the front end of the dump arm at the rear end, and an L-shaped side surface. a lift arm that is rotatably coupled to the front end of the intermediate arm at one end of a rice cake L shape and has a hook at the other end that can be hooked to the front upper part of the container; and the lift arm for the intermediate arm. and a telescopic cylinder rotatably connected to the frame and the lift arm at the front and rear ends, respectively. Device. (2) A container self-removal device for a container automobile according to claim 1, characterized in that a reverse bending prevention means is provided to prevent the intermediate arm from rotating downwardly of the dump arm. . (3) The reverse bending prevention means is a stopper means provided on the dump arm or the intermediate arm to prevent relative rotation thereof in the reverse bending direction. Automatic container attachment/detachment device for container cars. (4) The reverse bending prevention means is such that the axis of the rotational joint between the intermediate arm and the lift arm is located at a lower position than the axis of the rotational joint between the dump arm and the intermediate arm. A self-supporting container attachment/detachment device for a container automobile according to claim 2, characterized in that: (5) The first end of the lift arm is integrally provided with an extension that extends toward the dump arm and can come into contact with the dump arm. 5. The self-container attachment/detachment device for a container vehicle according to any one of items 4 to 4.