JP3831148B2 - Container transport vehicle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a container transport vehicle in which a container having a drive device operated by a drive source on the vehicle side can be attached to and detached from the vehicle.
[0002]
[Prior art]
Conventionally, a container transport vehicle in which a container is detachably mounted on a vehicle has been used. Some container transport vehicles of this type have a built-in hydraulic pushing device at the rear of the container in order to increase the efficiency of storing dust and the like in the container. As the drive source for this push-in device, the vehicle engine is used when the container is mounted on the vehicle, and the stationary independent drive source is used when the container is lowered from the vehicle. Yes.
[0003]
[Problems to be solved by the invention]
In the container transport vehicle, when a vehicle engine is used as a drive source, it is necessary to connect a hydraulic pipe extending from the container side to a connection part on the vehicle side. When dumping and discharging dust and the like, it is necessary to remove the hydraulic piping from the connection.
However, it is necessary to reconnect each hydraulic pipe to each connection section in order to load the container on the vehicle again after removing the hydraulic pipe from the connection section, or to store the container and collect dust. is there. At that time, if the high-pressure side hydraulic pipe is connected to the high-pressure side connection part (oil supply side) before the low-pressure side hydraulic pipe and then the hydraulic pump is operated without connecting the low-pressure side hydraulic pipe, The pressure oil is supplied to the pushing device side of the container in a state where the oil passage on the oil side is closed. As a result, the inside of the hydraulic line on the container side becomes abnormally high in a short time, and there is a risk of damage to the hydraulic equipment such as the switching valve on the container side and the pilot valve that controls the switching valve. In particular, in a detachable container, the frequency of detaching hydraulic piping is high, and the risk of breakage of the hydraulic equipment increases.
Therefore, an object of the present invention is to provide a container transport vehicle that can reliably prevent forgetting to connect a low-pressure side hydraulic pipe and prevent damage to hydraulic equipment on the container side.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, a container transport vehicle according to the present invention has a container having a driving device operated by a driving source on the vehicle side detachably mounted on a vehicle, and supplies and discharges hydraulic oil to the driving device. A container in which a high pressure side hydraulic pipe and a low pressure side hydraulic pipe are extended from either the vehicle side or the container side, and a low pressure side connection part and a high pressure side connection part for connecting the hydraulic pipe to the other side are arranged In transport vehicles,
Covering the high-pressure side connection part to restrict the connection of the high-pressure side hydraulic pipe to the high-pressure side connection part in a state where the low-pressure side hydraulic pipe is not connected to the low-pressure side connection part in the vicinity of both the connection parts, Therefore the connection operation of the low-pressure side hydraulic pipe for the low-pressure side connecting portion, characterized in that a connection restriction device having a regulating member to release the cover of the high-pressure side connection part by the low-pressure side hydraulic pipe is in contact (Claim 1).
According to this container transport vehicle, when connecting the hydraulic piping on the container side and the connecting portion on the vehicle side, the connection restricting device must be connected to the high pressure side hydraulic pressure unless the low pressure side hydraulic piping is connected before the high pressure side hydraulic piping. Regulate pipe connections. For this reason, forgetting to connect the low-pressure side hydraulic piping can be prevented.
[0005]
The restricting member is rotatable, and the restricting member is rotated in conjunction with the connection operation of the low pressure side hydraulic pipe with respect to the low pressure side connecting portion to release the covering of the high pressure side connecting portion by the restricting member. (Claim 2).
In this case, the restriction member can be rotated in conjunction with the connection operation of the low-pressure side hydraulic pipe with respect to the low-pressure side connection portion, and the covering of the high-pressure side connection portion by the restriction member can be released. The high pressure side hydraulic pipe can be connected to the high pressure side connection portion without requiring any operation. Further, the structure of the connection restriction device is simplified.
[0006]
The restricting member can be swung along a plane substantially parallel to the end face of each connecting portion, and the restricting member is swung in conjunction with the connection operation of the low pressure side hydraulic pipe with respect to the low pressure side connecting portion. The cover of the high-pressure side connection part may be released (claim 3).
In this case, the restriction member can be swung in conjunction with the connection operation of the low-pressure side hydraulic pipe with respect to the low-pressure side connection part, and the covering of the high-pressure side connection part by the restriction member can be released. It is possible to connect the high pressure side hydraulic pipe to the high pressure side connection portion without requiring the above. Further, since the regulating member turns along a plane substantially parallel to the end face of each connecting portion, the regulating member does not protrude to the hydraulic piping side when the low pressure side hydraulic piping is connected, and interferes with the hydraulic piping. There is no risk of damaging it.
[0007]
The restricting member is slidably supported at both side positions sandwiching both connecting portions. When the low pressure side hydraulic pipe is connected to the low pressure side connecting portion, the restricting member is slid to connect the high pressure side by the restricting member. The covering of the part may be released (claim 4).
In this case, since it is not necessary to arrange the components of the connection restricting device between the two connection portions, the two connection portions can be arranged close to each other, and the space for attaching the both connection portions is reduced. be able to.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a work state when the garbage collection container 3 of the container transport vehicle 1 is mounted on a vehicle to collect dust, etc., and FIG. 2 collects the dust etc. with the dust collection container placed on the ground. FIG. 3 shows a case where the dust and the like housed in the dust collection container are discharged.
The container transport vehicle 1 travels with a garbage collection container 3 mounted on a vehicle 2. The vehicle 2 is equipped with a cargo handling device 6 that is rotated backward or tilted backward by a cylinder 5 on a vehicle body 4, and the garbage collection container 3 can be lowered to the ground by the cargo handling device 6. . That is, the former shows a case where collection work is performed by going around the dust storage sites scattered in a plurality of places, and the latter shows a case where collection work is performed at a certain place.
[0009]
The dust collection container 3 has a dust storage portion 7 formed at the front and a dust push-in portion 8 formed at the rear. The push-up portion 8 can rotate upward to open the rear of the storage portion 7. A pushing device 10 driven by a driving device 9 such as a cylinder is provided in the pushing portion 8 so that the dust put into the pushing portion 8 can be pushed into the housing portion 7 by the pushing device 10. It has become. In addition, an engaging portion 11 is formed at the front portion of the accommodating portion 7, and by engaging the hook 12 at the tip of the cargo handling device 6 with the engaging portion 11, the dust collection container 3 can be loaded and unloaded. ing.
[0010]
Further, a high pressure side hydraulic pipe 13 and a low pressure side hydraulic pipe 14 for supplying hydraulic oil to the driving device 9 and returning the oil extend to the front portion of the accommodating portion 7. The end portions of the hydraulic pipes 13 and 14 can be connected to a low-pressure side connection portion 17 and a high-pressure side connection portion 18 of a connection device 16 provided on the vehicle 2 via a mounting column 15, respectively. . Thereby, when the garbage collection container 3 is mounted on the vehicle 2, when connecting each hydraulic piping 13, 14 to each connection portion 17, 18, and dumping the dust collection container 3 or dropping it to the ground, The hydraulic pipes 13 and 14 can be detached from the connection portions 17 and 18.
[0011]
FIG. 4 shows a hydraulic circuit, which can be separated into the vehicle 2 side and the dust collection container 3 side. The vehicle-side hydraulic circuit 19 is communicated from the hydraulic pump 21 driven by the engine 20 of the vehicle 2 to the cylinder 5 for the cargo handling device 6 and the connection device 16 via the switching valve 22. On the other hand, the container side hydraulic circuit 23 is communicated with the drive device 9 of the push-in device 10 via the switching valve 24, and each switching valve 24 is controlled to be switched by each pilot control valve 25. Further, by connecting the low pressure side hydraulic piping 14 of the dust collection container 3 to the low pressure side connection portion 17 of the connecting device 16 and connecting the high pressure side hydraulic piping 14 of the dust collection container 3 to the high pressure side connection portion 18, respectively. The pressure oil from the hydraulic pump 21 also flows to the dust collection container 3 side. In addition, if each hydraulic piping 13 and 14 is removed from each connection part 17 and 18, the check valve of each hydraulic piping 13 and 14 and each connection part 17 and 18 will act, and pressure oil will not leak from all. It has become.
[0012]
The connecting device 16 is provided with a connection restricting device 26 for preventing the high pressure side hydraulic pipe 13 from being connected to the high pressure side connecting portion 18 unless the low pressure side hydraulic piping 14 is connected to the low pressure side connecting portion 17 first. It is. As shown in FIGS. 5 to 9, the connection regulating device 26 has a low-pressure side connection portion 17 on the upper side of the mounting column 15 erected on the vehicle 2 and a high-pressure side connection portion 18 on the lower side. In addition, an arm 27 is provided between the connecting portions 17 and 18, and a flat plate-like regulating member 28 is pivotally supported at the tip of the arm 27 so as to be rotatable. The distance between the rotation center and the upper end of the restricting member 28 is shorter than the distance between the rotation center and the lower end, and is set in a range that does not hinder the connection of the low-pressure hydraulic pipe 14 during rotation. ing.
[0013]
Further, the upper portion of the regulating member 28 covers a portion of the low pressure side connecting portion 17 and the lower portion covers the whole of the high pressure side connection portion 18 (FIG. 7), normal state becomes substantially vertical state by the weight difference between the upper and lower ( 6), when the low-pressure side hydraulic pipe 14 is connected to the low-pressure side connecting part 17, the regulating member 28 is flipped up by the low-pressure side hydraulic pipe 14 and the covering of the high-pressure side connecting part 18 is released (FIG. 8). Thus, the high pressure side hydraulic pipe 13 can be connected to the high pressure side connecting portion 18 (FIG. 9).
If the high pressure side hydraulic pipe 13 is to be connected to the high pressure side connection part 18 before the low pressure side hydraulic pipe 14 is connected to the low pressure side connection part 17, the lower side of the rotation center of the regulating member 28 is connected to the high pressure side hydraulic pipe 13. Therefore, the high pressure side hydraulic pipe 13 cannot be connected to the high pressure side connection portion 18 by being pressed against the high pressure side connection portion 18.
[0014]
A support leg 37 is provided on the bottom of the front portion of the dust collection container 3. The support legs 37 are shortened when the dust collection container 3 is mounted on the vehicle 2 and are extended when the dust collection container 3 is lowered to the ground, so that the accommodating portion 7 is substantially horizontal.
[0015]
10 and 11 show another embodiment of the connection restricting device 26. FIG. The connection restricting device 26 pivotally supports a restricting member 30 on a shaft 29 protruding between the connecting portions 17 and 18 so as to be rotatable along a plane substantially parallel to the end surfaces of the connecting portions 17 and 18. A protrusion 31 having a tapered surface 31 a is formed on the upper side of the regulating member 30.
According to this connection restricting device 26, by pressing the tip of the low pressure side hydraulic pipe 14 against the tapered surface 31a, the restricting member 30 pivots clockwise around the shaft 29, and the low pressure side hydraulic pipe 14 is connected to the low pressure side. When connected to the portion 17, the covering of the high pressure side connecting portion 18 by the regulating member 30 is released, and the high pressure side hydraulic pipe 13 can be connected to the high pressure side connecting portion 18. Further, even if the high pressure side hydraulic pipe 13 is to be connected before the low pressure side hydraulic pipe 14, the lower part of the regulating member 30 covers the high pressure side connecting portion 18, and therefore the high pressure side hydraulic pipe 13 cannot be connected. .
[0016]
FIG. 12 shows still another embodiment of the connection restricting device 26. In this connection restricting device 26, the connecting portions 17 and 18 are arranged on the left and right, a pair of receiving portions 32 are provided at the upper and lower positions of the connecting portions 17 and 18, and the receiving portions 32 are restricted so that they can slide in the left and right directions. The member 33 is supported. An opening 34 that can pass through the hydraulic piping is formed in a part of the regulating member 33. The restricting member 33 is always urged to the left side by a spring 35, and is stopped at a predetermined position by a stopper 36 provided at the right end thereof coming into contact with the receiving portion 32. In this state, normally, the high pressure side connecting portion 18 is covered with the regulating member 33, and when the regulating member 33 is slid to the right side by the low pressure side hydraulic pipe 14 and connected to the low pressure side connecting portion 17, The covering of the high-pressure side connection portion 18 is released at the opening 34, and the high-pressure side hydraulic pipe 13 can be connected to the high-pressure side connection portion 18.
[0017]
In the container transport vehicle 1, when the garbage collection container 3 is placed in a predetermined place to collect the dust, the hydraulic pipes 13 and 14 are previously removed from the connection device 16 on the vehicle 2 side as shown in FIG. In this state, the refuse collection container 3 is lowered by the cargo handling device 6 and the hydraulic pipes 13 and 14 on the dust collection container 3 side are connected to an independent drive source on the ground. When dust is thrown into the push-in portion 8 in such a fixed state, the dust is housed in the housing portion 7 by the operation of the push-in device 10. When the container 7 is full, the garbage collection container 3 is loaded onto the vehicle by the cargo handling device 6 and transported to a predetermined discharge location. At a predetermined discharge location, as shown in FIG. 3, the pushing portion 8 of the dust collection container 3 is rotated upward, and then the cylinder 5 is extended to dump the cargo handling device 6. Thereby, the dust in the accommodating part 7 is discharged | emitted from the accommodating part 7. FIG.
[0018]
Next, when collecting the dust scattered at a plurality of locations, the dust collection container 3 is mounted on the vehicle 2 as shown in FIG. That is, dust is thrown into the pushing portion 8 at each location, and the pushing device 10 is operated to push the thrown dust into the housing portion 7. At that time, in order to drive the pushing device 10 from the engine 20 of the vehicle 2, the hydraulic pipes 13 and 14 on the dust collecting container 3 side are connected to the connecting device 16 on the vehicle 2 side. When connecting the hydraulic pipes 13 and 14 to the connecting device 16, even if the high pressure side hydraulic pipe 13 is first connected to the high pressure side connecting portion 18, the restricting member 28 cannot be connected and The high pressure side hydraulic pipe 13 can be connected after the low pressure side hydraulic pipe 14 is connected to the low pressure side connecting portion 17 first and the regulating member 28 is released. As a result, by connecting only the high-pressure side hydraulic pipe 13 first and operating the hydraulic pump 21 incorrectly in that state, the hydraulic devices such as the various valves 24 and 25 on the dust collection container 3 side are damaged. Can be surely prevented.
[0019]
In addition, the discharge of the contents in the dust collection container 3 is different from the method in which the dust collection container 3 is dumped and discharged as in the above-described embodiment, and the discharge plate is moved back and forth in the storage portion 7 of the dust collection container 3. It is possible to slidably disengage the discharge plate after moving the push-in portion 8 upward, in which case the hydraulic pipes 13, 14 are connected to the connection portions 17, 18. It is necessary to keep it.
Furthermore, the connection restricting device 26 can be provided on the container side. In this case, it is necessary to extend the hydraulic piping from the vehicle side.
[0020]
The container mounted on the vehicle 2 is not limited to the dust collection container 3, and various containers can be mounted as long as it has a driving device driven by hydraulic pressure. Further, the loading and unloading of the container is not limited to the cargo handling device 6 attached to the vehicle body 2, and can be loaded and unloaded by a forklift or the like.
[0021]
【The invention's effect】
As described above, according to the container transport vehicle of the first aspect, when connecting the container-side hydraulic pipe and the vehicle-side connecting portion, the low-pressure side hydraulic pipe is not connected before the high-pressure side hydraulic pipe. Since the connection regulating device regulates the connection of the high pressure side hydraulic pipe, it is possible to reliably prevent forgetting to connect the low pressure side hydraulic pipe. For this reason, the conventional problem that the hydraulic equipment on the container side is damaged can be solved by connecting only the high-pressure side hydraulic piping and operating the hydraulic pump.
[0022]
According to the container transport vehicle of claim 2, the regulating member is rotated in conjunction with the connecting operation of the low-pressure side hydraulic pipe to the low-pressure side connecting portion, and the covering of the high-pressure side connecting portion by the regulating member is released. Therefore, the high-pressure side hydraulic pipe can be connected to the high-pressure side connection portion without requiring a special operation. In addition, it is possible to prevent damage to the hydraulic equipment on the container side with a simple structure, and it is possible to easily attach the connection regulating device to an existing container transport vehicle.
[0023]
According to the container transport vehicle of claim 3, the control member is turned in conjunction with the connection operation of the low-pressure side hydraulic pipe to the low-pressure side connection portion, and the covering of the high-pressure side connection portion by the control member is released. Therefore, the high pressure side hydraulic pipe can be connected to the high pressure side connection portion without requiring a special operation. Further, since the regulating member turns along a plane substantially parallel to the end face of each connecting portion, the regulating member does not protrude to the hydraulic piping side when the low pressure side hydraulic piping is connected, and interferes with the hydraulic piping. There is no risk of damaging it.
[0024]
According to the container transport vehicle of claim 4, since it is not necessary to arrange the component members of the connection regulating device between the two connection portions, both the connection portions can be arranged close to each other. Space for mounting can be made compact.
[Brief description of the drawings]
FIG. 1 is a side view of a container transport vehicle showing a state where a garbage collection container is mounted on a vehicle.
FIG. 2 is a side view showing a state where a dust collection container is lowered from a vehicle.
FIG. 3 is a side view showing a state in which the dust collection container on the vehicle is dumped to discharge the dust and the like in the container.
FIG. 4 is a hydraulic circuit diagram of a vehicle and a dust collection container.
FIG. 5 is an enlarged side view of the connection device.
FIG. 6 is a side view of the main part showing a state in which the hydraulic piping of the connecting device is not connected.
7 is a view taken in the direction of arrow A in FIG.
FIG. 8 is a side view of an essential part showing a state in which a low pressure side hydraulic pipe is connected to a connection device.
FIG. 9 is a side view of an essential part showing a state where the low pressure side hydraulic pipe and the high pressure side hydraulic pipe are connected to the connecting device.
FIG. 10 is a front view showing another embodiment of the connection restricting device.
11 is a perspective view of the connection restricting device shown in FIG.
FIG. 12 is a front view showing still another embodiment of the connection restricting device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Container transport vehicle 2 Vehicle 3 Garbage collection container 10 Pushing device 13 High pressure side hydraulic piping 14 Low pressure side hydraulic piping 16 Connecting device 17 Low pressure side connecting portion 18 High pressure side connecting portion 19 Vehicle side hydraulic circuit 23 Container side hydraulic circuit 26 Connection restriction device 28 Regulatory members

Claims (4)

A container having a drive device operated by a drive source on the vehicle side is detachably mounted on the vehicle, and a high-pressure side hydraulic pipe and a low-pressure side hydraulic pipe for supplying and discharging hydraulic oil to and from the drive device are connected to the vehicle side or In a container transport vehicle in which a low-pressure side connection part and a high-pressure side connection part for extending from either one of the container side and connecting the hydraulic piping to the other are arranged,
Covering the high-pressure side connection part to restrict the connection of the high-pressure side hydraulic pipe to the high-pressure side connection part in a state where the low-pressure side hydraulic pipe is not connected to the low-pressure side connection part in the vicinity of both the connection parts, Therefore the connection operation of the low-pressure side hydraulic pipe for the low-pressure side connecting portion, characterized in that a connection restriction device having a regulating member to release the cover of the high-pressure side connection part by the low-pressure side hydraulic pipe is in contact Container transport vehicle. The restricting member is rotatable, and the restricting member is rotated in conjunction with the connection operation of the low pressure side hydraulic pipe with respect to the low pressure side connecting portion to release the covering of the high pressure side connecting portion by the restricting member. Item 1. The container transport vehicle according to Item 1. The restricting member can be swung along a plane substantially parallel to the end face of each connecting portion, and the restricting member is swung in conjunction with the connection operation of the low pressure side hydraulic pipe with respect to the low pressure side connecting portion. The container transport vehicle of Claim 1 which cancels | releases the covering of the high voltage | pressure side connection part by a. The restricting member is slidably supported at both side positions sandwiching both connecting portions. When the low pressure side hydraulic pipe is connected to the low pressure side connecting portion, the restricting member is slid to connect the high pressure side by the restricting member. The container transport vehicle of Claim 1 which cancels | releases the covering of a part.

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