JP6563268B2 - Desorption vehicle - Google Patents

Description

  The present invention relates to a detachable vehicle capable of detaching a cargo box from a vehicle body.

  Conventionally, as this type of detachable vehicle, for example, as shown in Patent Document 1, a cargo box that is detachably mounted on a vehicle body is raised and supported by support legs in a state of being separated from the vehicle body. A so-called horizontal detachable detachable vehicle is known.

  On the other hand, when the range of expansion / contraction of the support leg cannot be increased, the technology for adjusting the air suspension as described in Patent Document 2 or 3 is used to reduce the height of the vehicle body and to horizontally remove and attach the cargo box. It is also known to facilitate the above.

  Further, as disclosed in Patent Document 4, it is known to provide a movable rear bumper that can be switched to a normal position or a retracted position at the rear part of the vehicle body.

Japanese Patent No. 4312412 JP 2005-125907 A JP 7-81477 A JP 2007-276687 A

  However, in the horizontal detachable vehicle as described in Patent Document 1, it is necessary to move the vehicle body forward and detach the load box with the support legs of the load box extended. In addition, it is necessary to secure a space for turning the vehicle body as well as a space for placing the cargo box and a space for the vehicle body to move forward and backward. It is difficult to secure such a space particularly in a place where a large number of packing boxes are arranged.

  Therefore, when the longitudinal direction of the vehicle body is long, there is a problem that the operation for turning and moving forward and backward becomes troublesome.

  The present invention has been made in view of such points, and an object of the present invention is to adjust the posture of the vehicle body at the time of detachment of the packing box so that the packing box can be detached and attached as easily as possible even in a narrow place. There is.

  In order to achieve the above object, in the present invention, the vehicle height adjustment and the storage of the rear bumper are interlocked.

Specifically, in the first invention, an air suspension capable of adjusting the vehicle height of the vehicle body,
A movable rear bumper provided at the rear of the vehicle body and switchable to a normal position or a storage position;
An air cylinder for a bumper that switches the movable rear bumper by an extension operation;
A pneumatic circuit for sending high-pressure air to the air suspension and the bumper air cylinder;
Assuming a detachable vehicle that can detach the cargo box from the car body,
The desorption vehicle is
When separating the cargo box, the air suspension and the bumper air cylinder are interlocked, the air suspension is reduced, the vehicle height of the vehicle body is lowered, and the movable rear bumper is in the retracted position. ing.

  According to the above configuration, when separating the cargo box, the air suspension can be reduced to lower the vehicle height, and the movable rear bumper can be placed in the storage position to shorten the front and rear length of the vehicle body. This makes it easier to turn and move forward and backward. In the present invention, it is possible to easily change the posture of the vehicle body by interlocking the air suspension and the bumper air cylinder.

In the second invention, in the first invention,
When the packing box is separated, the pneumatic circuit is configured to simultaneously release high-pressure air from the air suspension and the bumper air cylinder.

  According to the above configuration, by controlling the pneumatic circuit, the air suspension and the bumper air cylinder can be interlocked with each other by simply extracting high-pressure air.

In the third invention, in the first or second invention,
An interlock switch for interlocking the air suspension and the bumper air cylinder is further provided, and the air suspension and the bumper air cylinder are interlocked only when the interlock switch is on.

  According to the above configuration, if the air suspension and the air cylinder for the bumper are always interlocked, the safety is ensured when the vehicle is in a normal use state such as during traveling by interlocking only when the cargo box is detached or attached. The

  As described above, according to the present invention, when the cargo box is cut off, the air suspension and the bumper air cylinder are interlocked to lower the vehicle height of the vehicle body, and the movable rear bumper is set to the retracted position. Thus, the posture of the vehicle body at the time of detaching the packing box can be appropriately adjusted, and the packing box can be detached and attached as easily as possible even in a narrow place.

It is a front view which shows a mode that the desorption vehicle which concerns on embodiment of this invention removes | desorbs a cargo box. It is a front view which shows the normal use condition of the desorption vehicle which concerns on embodiment of this invention. It is a front view which shows the outline | summary of an operation panel. It is a pneumatic circuit diagram of a detachable vehicle. It is a pneumatic circuit figure concerning a modification.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 and 2 show a detachable vehicle 1 according to an embodiment of the present invention. The detachable vehicle 1 includes a travelable vehicle body 2 including a cab 3, a chassis 4, and a plurality of wheels 5. Yes.

  The vehicle body 2 includes, for example, an air suspension 6 that can adjust the vehicle height at the rear portion of the chassis 4. A movable rear bumper 7 that can be switched to the normal position or the storage position is provided at the rear portion of the vehicle body 2. The movable rear bumper 7 includes a bumper air cylinder 8 that switches the movable rear bumper 7 by an expansion / contraction operation. Further, the vehicle body 2 includes a pneumatic circuit 30 (shown in FIG. 4) that sends high-pressure air to the air suspension 6 and the bumper air cylinder 8. The movable rear bumper 7 may be provided with a return mechanism 9 such as a tension coil spring in order to automatically reduce the pressure when the pressure in the bumper air cylinder 8 decreases. Further, air that has entered the suspension may be used as a return mechanism.

  The detachable vehicle 1 further includes a cargo box 10 that is detachably mounted on the vehicle body 2. The packing box 10 includes, for example, two pairs of support legs 11, and the support legs 11 are rotatable and extendable. As shown in FIG. 1, in a state where the support leg 11 is rotated and extended, the ground height is lowered by removing air from the suspension of the vehicle body 2, and the load is loaded by the support leg 11 while being separated from the vehicle body 2. The box 10 can be supported on the ground or the like. Instead of lowering the ground height of the vehicle body 2, the cargo box 10 may be raised and separated from the vehicle body 2.

  For example, an operation panel 20 is provided in the cab 3, and as shown in FIG. 3, a rear bumper switch 21 that expands and contracts the movable rear bumper 7 and a bumper air cylinder 8 extend and contract on the operation panel 20. An air suspension switch 22 is provided for switching the movable rear bumper 7 to the extended normal position or the retracted storage position. The operation panel 20 includes an interlocking switch 23 for interlocking the air suspension 6 and the bumper air cylinder 8. For example, the rear bumper switch 21 and the air suspension switch 22 are composed of momentary switches, and the interlocking switch 23 is composed of a toggle switch. For example, when the traveling speed is 10 km / h or more, it is desirable to provide a safety mechanism that does not interlock even when the interlock switch 23 is pressed.

  As shown in FIG. 4, the pneumatic circuit 30 includes an air suspension switching valve 31 composed of a three-port two-position switching valve for switching the operation of the air suspension 6 and a three-port for switching the operation of the bumper air cylinder 8. A bumper switching valve 32 including a two-position switching valve and a protection valve 33 are provided. At least the air suspension switching valve 31 and the bumper switching valve 32 exchange signals with the control device 24 and are configured to interlock the air suspension 6 and the bumper air cylinder 8 only when the interlocking switch 23 is on. Has been.

  Next, the operation of the detachable vehicle 1 according to this embodiment will be described.

  First, in a normal use state such as during traveling shown in FIG. 2, the packing box 10 is mounted on the chassis 4 and the support legs 11 are stored. The air suspension switching valve 31 and the bumper switching valve 32 are in the normal position of FIG. 4, the air suspension 6 is extended and the vehicle height is high, the bumper air cylinder 8 is extended, and the movable rear bumper 7 is in the normal position. It has become. Thereby, it can drive | work comfortably and the safety | security with respect to a rear-end collision is also ensured.

  Then, when separating the packing box 10, as shown in FIG. 1, first, the support leg 11 is rotated to be vertical, and then the interlock changeover switch 23 is tilted to the ON side so that the interlocking operation can be performed. . At this time, since the vehicle body 2 is stopped, the safety mechanism does not work and the interlocking operation is possible.

  Next, when either the air suspension switch 22 or the rear bumper switch 21 is operated, the air suspension switching valve 31 and the bumper switching valve 32 are switched to the storage position. As a result, the high-pressure air is released to the atmosphere, the air suspension 6 and the bumper air cylinder 8 are interlocked, the air suspension 6 is reduced, the vehicle height of the vehicle body 2 is lowered, and the movable rear bumper 7 is in the retracted position. When the interlock switch 23 is off, the air suspension switching valve 31 or the bumper switching valve 32 can be switched independently.

  As described above, when the cargo box 10 is separated, the air suspension 6 can be simultaneously reduced to lower the vehicle height of the vehicle body 2, and the movable rear bumper 7 can be placed in the storage position to shorten the front and rear lengths of the vehicle body 2. As a result, the vehicle body 2 can be easily turned and moved forward and backward. In the state where the interlock changeover switch 23 is turned to the on side, if either the air suspension switch 22 or the rear bumper switch 21 is operated, the air suspension 6 and the bumper air cylinder 8 are interlocked so that the posture change of the vehicle body 2 is easily performed. It can be carried out.

  Further, in the present embodiment, the air suspension 6 and the bumper air cylinder 8 can be easily interlocked by simply removing the high-pressure air by controlling the pneumatic circuit 30 when separating the cargo box 10. .

  Furthermore, by operating the air suspension 6 and the bumper air cylinder 8 in conjunction with each other only when the cargo box 10 is attached / detached by the interlock changeover switch 23, it is possible to ensure safety during traveling.

  Therefore, according to the detachable vehicle 1 according to this embodiment, the posture of the vehicle body 2 at the time of detachment of the cargo box 10 can be adjusted, and the cargo box 10 can be detached and attached as easily as possible even in a narrow place.

-Modification-
FIG. 5 shows a modification of the embodiment of the present invention, which differs from the above embodiment in that the configuration of the pneumatic circuit 30 is different. In addition, in this modification, the same code | symbol is attached | subjected about the same part as FIGS. 1-4, and the detailed description is abbreviate | omitted.

  In other words, in this modification, the air suspension 6 and the bumper air cylinder 8 are controlled by the single 3-port 2-position switching valve 34.

  In this case, the configuration becomes extremely easy. However, if air leaks somewhere in the pneumatic circuit 30, there is a possibility that a problem occurs in both the air suspension 6 and the bumper air cylinder 8.

(Other embodiments)
The present invention may be configured as follows with respect to the above embodiment.

  That is, in the said embodiment, although the desorption vehicle 1 is provided with the cargo box 10, the kind of the cargo box 10 is not specifically limited, such as a dry container, a refrigeration container, a container for garbage, a wet salt distribution container.

  In the above embodiment, the movable rear bumper 7 is directly expanded and contracted by the bumper air cylinder 8 to switch between the normal position and the storage position. However, as in Patent Document 4, the bumper air cylinder is indirectly expanded and contracted. Alternatively, the movable rear bumper may be rotated to switch between the normal position and the storage position.

  In the above-described embodiment, the bumper air cylinder 8 is provided with the return mechanism 9 as a single-acting cylinder, but may be a double-acting cylinder without providing the return mechanism 9. In that case, the bumper air cylinder 8 may be switched between expansion and contraction by moving the piston rod in the opposite direction instead of releasing air.

  In the above embodiment, the detachable vehicle 1 is a horizontally detachable detachable vehicle, but it may be a detachable vehicle that loads and unloads while lowering the height of the vehicle body while tilting the cargo box. Even in this case, if the air suspension 6 and the bumper air cylinder 8 are adjusted to reduce the vehicle height and the overall length, the vehicle body 2 can be easily moved back and forth and turned.

  In addition, the above embodiment is an essentially preferable illustration, Comprising: It does not intend restrict | limiting the range of this invention, its application thing, or a use.

1 Desorption vehicle
2 body
3 cab
4 Chassis
5 wheels
6 Air suspension
7 Movable rear bumper
8 Bumper air cylinder
9 Return mechanism
10 Packing box
11 Support legs
20 Operation panel
21 Rear bumper switch
22 Air suspension switch
23 Interlocking switch
24 Control device
30 Pneumatic circuit
31 Air suspension switching valve
32 Bumper switching valve
33 Protection valve
34 Position switching valve

Claims (2)

Air suspension that can adjust the height of the car body,
A movable rear bumper provided at the rear of the vehicle body and switchable to a normal position or a storage position;
An air cylinder for a bumper that switches the movable rear bumper by an extension operation;
A pneumatic circuit for sending high-pressure air to the air suspension and the bumper air cylinder;
In the detachable vehicle capable of detaching the packing box from the vehicle body,
When separating the cargo box, the air suspension and the bumper air cylinder are interlocked, the air suspension is reduced, the vehicle height of the vehicle body is lowered, and the movable rear bumper is in the retracted position. ,
The apparatus further includes an interlocking switch for interlocking the air suspension and the bumper air cylinder, and is configured to interlock the air suspension and the bumper air cylinder only when the interlocking switch is on. Detachable vehicle characterized by the above. In the desorption vehicle according to claim 1,
A detachable vehicle characterized in that the high pressure air of the air suspension and the bumper air cylinder is simultaneously removed by the pneumatic circuit when the cargo box is separated.

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