JP2007261552A - Vehicle provided with load-carrying platform - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle provided with a load-carrying platform capable of safely performing loading/transferring by the minimum labor of a worker when a load must be loaded/transferred from one vehicle to the other vehicle. <P>SOLUTION: The vehicle 9 provided with the load-carrying platform 92 for loading the load is provided with a conveying device 1 capable of moving the loaded load on an upper surface of the load-carrying platform 92; a height adjustment device 2 capable of adjusting height of the load-carrying platform; and a connection device 3 capable of performing connection in such a state that a rear end of the load-carrying platform 92' of the vehicle 9' provided with the other load-carrying platform is made opposed to a vehicle rear end of the load-carrying platform 92. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vehicle having a loading platform for loading and transporting a load, and more particularly, to a vehicle having a loading platform that enables easy loading and unloading of loaded loads. It is.

In general, in a vehicle equipped with a cargo bed, it is necessary to move the cargo on the cargo bed when loading and unloading the cargo. In such a case, for example, what is described in Japanese Patent Application Laid-Open No. 2004-10031 or the like can be cited as a means for reducing the labor of the worker. And this thing provides the belt conveyor driven with a motor in a loading platform, and can move the load on a loading platform by this.
JP 2004-10031 A

  By the way, in the said conventional thing, when moving the load on a loading platform, an operator's labor can be reduced. However, when carrying a normal package, there may be a situation where it is necessary to transship the package from one vehicle to another. For example, a large vehicle with a narrow road cannot be entered and must be transshipped to a small vehicle, or the load on one vehicle is distributed to multiple vehicles to reduce delivery time. There are cases where you want to. In such a case, the loading platforms of the two vehicles must face each other, and an operator must lift the load, pass the load from the vehicle to the vehicle, move the load, and transship. There are various loads such as light items, heavy items, small items, and large items. Especially when moving, large items such as large furniture and refrigerators are loaded. However, the above-described conventional apparatus must be transshipped by handing over the load from the vehicle to the vehicle only by the labor of the worker. Therefore, it takes time for the transshipment work. In addition, there is a problem that when a large load such as a heavy object or furniture is transshipped, a great amount of labor is required and there is a danger. In order to solve these problems, an attempt is made to provide a vehicle having a loading platform that allows the rear end portions of the loading platform of the vehicle to be connected to each other so that loaded cargo can be easily transshipped. It is the object (problem) of the present invention.

  In order to solve the above problems, the following measures are taken in the present invention. That is, according to the first aspect of the present invention, with respect to a vehicle having a loading platform for loading a load, a transfer device capable of moving the loaded load on the upper surface of the loading platform, and adjusting the height of the loading platform. A height adjusting device capable of being connected, and a connecting device that can be connected in a state of being opposed to a rear end portion of a vehicle loading platform provided with another loading platform at a rear end portion of the loading platform. It was decided to adopt.

  Next, the invention described in claim 2 will be described. The basic point of this is the same as that of the first aspect. That is, with respect to the vehicle including the loading platform for loading the cargo according to claim 1, the configuration is such that the transport device can be operated by a driving mechanism having a driving source.

  Next, an invention according to claim 3 will be described. This also has the same basic points as those described in the first and second aspects. That is, regarding the vehicle provided with the loading platform for loading the cargo according to claim 1 or 2, the configuration is such that the transport device can be housed inside the loading platform when not in use.

  According to the first invention, the height of the loading platform is adjusted to be substantially the same as the height of the rear end of the loading platform of the other vehicle, and the vehicle is connected in a state of being opposed to each other. It becomes easy to deliver the load from the loading platform to the loading platform of the other vehicle. The operator can easily move the upper surface of the cargo bed with minimal effort without lifting the cargo loaded by the transport device, and the cargo can be moved continuously from the vehicle cargo bed to the cargo bed. Therefore, the transshipment workability can be improved. In addition, safety when moving a large load or a heavy load is improved.

  Moreover, according to 2nd invention, the luggage | load on a conveying apparatus can be moved without depending on an operator's effort by operating a conveying apparatus with a drive mechanism. Furthermore, it becomes possible to transship while automatically moving the load to the loading platform of another vehicle.

  In addition, according to the third invention, the feature is that when it is not necessary to use the transport device such as during traveling, the transport device does not protrude from the surface of the cargo bed, It becomes possible to be flat. As a result, the load is placed on the surface of the flat bed and is stably loaded.

  The best mode for carrying out the present invention will be described with reference to FIGS. As shown in FIG. 1, the configuration of the present embodiment is such that the height of the loading platform 92 and the transportation device 1 provided at the loading platform 92 of the vehicle 9 including the driver's seat 91 and the loading platform 92 are adjusted. And a connecting device 3 for connecting the rear ends of each other after the height adjusting device 2 is adjusted to the same height as the loading platform of the other vehicle by the height adjusting device 2. Basic. The transport device 1 having these configurations is driven by a drive motor 12 so that a load loaded on the transport device 1 is transported.

  In such a configuration, the conveying device 1 is formed around a plurality of rollers 15 as shown in FIGS. 2 (a) and 2 (b). The rollers 15 are rotatably supported, and the driving force of the driving motor 12 controlled by the transport device control unit 11 (see FIG. 1) is transmitted and rotated via the power transmission mechanism 13 and the power transmission mechanism 14. It is something that has come to be. In addition, a torque limiter (not shown) is provided between each roller 15 and the power transmission mechanism 14 so that transmission of power can be interrupted when a load exceeding a predetermined value is applied to the roller 15. It has become. As a result, even when an overload is applied to the roller 15 or when a load is sequentially buried from the back of the loading platform 92, the driving force to the roller 15 can be cut off. Further, in order to increase the frictional force, the surface of the roller 15 is provided with unevenness for preventing slippage, rubber or the like. The power transmission mechanism 13 and the power transmission mechanism 14 can efficiently transmit the power of the drive motor 12 by a combination of gears, a combination of chains and gears, or a combination of shafts. A drive mechanism is formed by the drive motor 12, the power transmission mechanism 13, the power transmission mechanism 14, and the like.

  The roller 15, the drive motor 12, the power transmission mechanism 13, and the power transmission mechanism 14 are integrally formed as the transport device 1 and are attached to the vehicle 9 via the frame 17. Furthermore, the transport device 1 integrated as described above can be moved in the vertical direction as a whole, and when used, as shown in FIG. It is arranged and fixed at a position protruding from the upper surface 92a. Accordingly, the bottom surfaces of the loads B1, B2, and B3 loaded on the loading platform 92 are supported by the rollers 15 and are conveyed by the rotation of the rollers 15. Further, when not in use such as traveling, the roller 15 is fixed in a state of being housed in a position where it does not protrude from the upper surface 92a of the loading platform 92, as shown in FIG. As a result, the bottom surfaces of the loads B1, B2, B3 loaded on the loading platform 92 are supported on the upper surface 92a of the loading platform 92, and can be loaded stably.

  Next, the height adjusting device 2 that adjusts the height of the loading platform 92 of the vehicle 9 will be described with reference to FIG. The vehicle 9 is provided with a suspension mechanism. In particular, the vehicle height of the vehicle 9 can be adjusted by employing an air suspension mechanism. By adjusting the vehicle height, the height of the loading platform 92 can be adjusted as a result, so that such an air suspension mechanism is made to function as the height adjusting device 2. Such an air suspension mechanism as the height adjusting device 2 is provided with an air spring 21 as a spring that supports the tire T so that air can be taken in and out by an air compressor (not shown) or the like. Yes. As a result, when the height is different when the rear end of the loading platform 92 faces the other vehicle, the air in and out of the air spring 21 is adjusted to adjust the height. In addition, after adjusting height, the function (not shown) which locks a suspension mechanism is also provided so that the vehicle 9 may not shake by the air spring 21 bending. In addition to such a method using the air spring 21, as shown in FIG. 3, an outrigger 22 'using hydraulic pressure may be attached to the vehicle 9' as the height adjusting device 2 '. If the height of the loading platform 92 ′ is adjusted by lifting the entire vehicle 9 ′ upward by the outrigger 22 ′, a relatively large adjustable height can be obtained. At the same time, the vehicle 9 'can be supported without shaking.

  Next, the coupling device 3 will be described. As shown in FIG. 4, the coupling device 3 is provided at a position separated from the loading platform 92 in the vehicle width direction by a predetermined distance L with the engaging claw 31 as the center. It consists of a pair of engaged side 3a and engaged side 3b with the engaging shaft 36 as the center. The engagement side 3a of one vehicle 9 is engaged with the engaged side 3b of the other vehicle 9 ', and the engaged side 3b of one vehicle 9 is the engagement side 3a of the other vehicle 9'. Are arranged to engage with each other. Furthermore, even when the entire width of the loading platform 92 is different, any vehicle can be reliably connected by standardizing the predetermined distance L of the connecting device 3 to be constant. Yes.

  As shown in FIG. 5, the engaging claw 31 is supported on the engaging side 3 a of the coupling device 3 so as to be rotatable about the shaft 32 with respect to the loading platform 92. Further, the shaft 32 is supported so as to be slidable along a slide groove 33 provided on the loading platform 92 in the vehicle longitudinal direction. The engaging claw 31 is provided with a spring 34 so that a spring force is applied toward the lower side of the vehicle about the shaft 32. Further, the engaged side 3b is provided with an engaging shaft 36 with which the engaging claw 31 on the engaging side 3a is engaged, and a guide bracket 37 so as to sandwich the engaging shaft 36 from both sides. The guide bracket 37 guides the engaging claw 31 so that it can slide smoothly, and the distance W1 between the guide brackets 37 is larger than the width (thickness) W2 of the engaging claw 31 so that two The vehicle 9, 9 'is allowed to be slightly displaced in the vehicle width direction (see FIG. 4). Whether or not it is normally connected is detected by a connection state detection switch 44.

  Next, a method of connecting the vehicles 9 and 9 'by the connecting device 3 will be described with reference to FIG. First, as shown in FIG. 6 (a), the vehicle is stopped with the rear ends of the loading platforms 92 and 92 'of the vehicles 9 and 9' facing each other. At this time, the engagement side 3a and the engaged side 3b that are connected to each other are aligned so as to be in a state of being opposed to each other. Next, as shown in FIG. 6B, the vehicle 92 is moved backward until the rear end portion of the loading platform 92 'of the other vehicle 9' comes into contact with the rear end portion of the loading platform 92 of one vehicle 9. Elastic bodies 93 are provided at the rear end portions (rear end surfaces) of the respective loading platforms 92 and 92 ′, absorb the impact when the loading platforms 92 and 92 ′ come into contact with each other, and each loading platform 92, The gap between 92 'can be eliminated. Then, when the slide lever 35 is slid toward the rear end side with the rear end portions of the respective loading platforms 92 and 92 ′ closely aligned in this way, the shaft 32 moves along the slide groove 33, The engaging claw 31 also moves. When the slide is further performed, as shown in FIG. 6 (c), the engagement claw 31 collides with the engagement shaft 36 on the engaged side 3b, and finally gets over the engagement shaft 36. The claw 31 and the engagement shaft 36 are engaged (see FIG. 6D). In this state, the engaging claw 31 is maintained in the engaged state because the spring force is applied in the direction of arrow A by the spring 34. Whether or not the engagement claw 31 and the engagement shaft 36 are correctly connected is detected by a connection state detection switch 44.

  Next, based on FIG. 7, the whole structure for controlling the operation | movement of the conveying apparatus 1 is demonstrated. The transport device control unit 11 is for controlling the drive of the transport device 1 and controls the drive of the drive motor 12 based on information from various sensors, switches and the like. The alarm device 18 notifies the worker by a method such as a warning sound or a screen display when the conveyance device 1 cannot be driven or when there is some abnormality. The vehicle speed sensor 41 can determine whether or not the vehicle 9 is stopped. The parking brake switch 42 is used to determine whether or not the vehicle 2 is applying a parking brake. The shift position switch 43 is for detecting whether or not the shift lever is in the neutral or parking position. The connection state detection switch 44 is provided in the vicinity of the connection device 3 and can detect whether or not the engagement claw 31 and the engagement shaft 36 are reliably engaged and connected.

  Further, the transport device peripheral object sensor 45 can detect whether there is a person in the vicinity of the transport device 1 using infrared rays or the like. The battery voltage sensor 46 is used for determining whether there is no problem even if the state (voltage) of the battery of the vehicle 9 is detected and the drive motor 12 is operated. The transport device operation switch 51 a is a switch provided in the driver's seat 91 and can perform operations such as driving, stopping, and switching of the rotation direction of the transport device 1. The transport device operation switch 52a is a switch provided on the loading platform 92 side, and can similarly operate the transport device 1. The transport device emergency stop switch 51b is provided in the driver's seat 91 and is a switch operated when it is desired to immediately stop the operation of the transport device 1 such as in an emergency. Similarly, a transport device emergency stop switch 52b is also provided at the loading platform 92. Further, when the loading platform 92 is connected by the connecting device 3, the engine control unit 8 is controlled by the transport device control unit 11 so as to limit the engine output so that the vehicle cannot start. Further, when the cargo beds 92 and 92 ′ are connected to each other, when the transport device operation switches 51a and 52a of the one vehicle 9 or the transport device emergency stop switches 52a and 52b are operated, the transport device 1 of the other vehicle 9 ′. Are also operated in conjunction with each other.

Next, a method of driving the transport device 1 will be described using the flowchart shown in FIG.
First, in S1, it is detected whether or not the transport device operation switch 51a on the driver's seat 91 side or the transport device operation switch 52a on the cargo bed 92 side has been operated. If there is an operation, the output of the vehicle speed sensor 41 is confirmed in S1, and when the vehicle speed is not 0, that is, when the vehicle is not stopped (N), the alarm device 18 outputs a warning sound, a warning display, etc. not allowed. When the vehicle speed 0 is detected (Y), the process proceeds to S2. In S2, the output of the parking brake switch 41 is confirmed whether the parking brake is applied. When the parking brake is not applied (N), the alarm device 18 is activated and the operation of the transport device 1 is not permitted. When the parking brake is applied (Y), the process proceeds to S3.

  In S3, the shift position switch 43 detects the position of the shift lever. When the shift lever is not in the neutral position or the parking position (N), the alarm device 18 is activated and the operation of the transport device 1 is not permitted. When in the neutral position or the parking position (Y), the process proceeds to S4. In S4, the output of the connection state detection switch 44 is confirmed whether or not the loading platform 92 has been connected. When the connection is not completed (N), the alarm device 18 is activated and the operation of the transport device 1 is not permitted. When the connection is completed (Y), the process proceeds to S5. In S5, the output of the transport device peripheral object detection sensor 45 is confirmed. If it is determined that there is someone such as an operator around the transport device 1 (N), it is regarded as dangerous and the alarm device 18 is activated to stop the operation of the transport device 1. Even if the transport device 1 is operating, if someone enters the vicinity of the transport device 1 in the loading platform 92 within the detection range of the transport device peripheral object detection sensor 45, the operation of the transport device 1 is stopped. . If it is determined that there is no one (Y), it is determined that safety is secured, and the process proceeds to S6.

  In S6, the output of the battery voltage sensor 46 is confirmed. When the voltage is equal to or lower than the predetermined voltage (N), it is considered that the load on the battery is large, the alarm device 18 is activated, and the operation of the transport device 1 is not permitted. When the voltage is equal to or higher than the predetermined voltage (Y), the driving device can be driven and the process proceeds to S7. In S7, it is detected whether or not there is an operation of the transport device emergency stop switch 51b of the driver's seat 91 and the transport device emergency stop switch 52b of the loading platform 92. If there is any operation (with operation), it is judged that there is a danger and it is necessary to stop immediately, and the alarm device 18 is activated to stop the operation of the transport device 1. If there is no operation (no operation), the transport device 1 is operated.

  A procedure for operating the transfer device 1 in the vehicles 9 and 9 ′ including the loading platform 92 having the transfer device 1 will be described. First, the rear ends of the loading platforms 92 and 92 ′ of the two vehicles 9 and 9 ′ face each other and stop. The height adjusting device 2 adjusts so that the heights of the respective loading platforms 92 and 92 'are the same. Either one of the vehicles 9, 9 'is moved backward and stopped at a position where the rear ends of the respective loading platforms 92, 92' are in contact with each other. The loading platforms 92 and 92 ′ are coupled by the coupling device 3. The transport device operation switches 51a and 52a are operated. If the predetermined condition is satisfied, the transfer device 1 operates. In addition, each of the transport devices 1 of the vehicles 9 and 9 ′ is connected to a wire harness or the like in a state of being connected by the connecting device 3 so that the operation can be interlocked. As a result, the respective transport devices 1 of the vehicles 9 and 9 ′ are automatically and continuously moved from one vehicle 9 to the other vehicle 9 ′ by operating their operations. It can be transshipped with minimal effort. Even when the load is moved to the other vehicle 9 ′ and sequentially filled with the load from the back of the loading platform 92 ′, the driving force to the roller 15 can be cut off by a torque limiter (not shown). . Also, which operation of the vehicles 9, 9 'is prioritized can be selected by a changeover switch or the like.

1 is an overall view showing a configuration of the present invention. It is sectional drawing which shows the conveying apparatus concerning this invention. It is a general view which shows the other example of the height adjustment apparatus concerning this invention. It is a top view which shows the coupling device concerning this invention. It is sectional drawing which shows the connection apparatus concerning this invention. It is sectional drawing which shows the connection method of the connection apparatus concerning this invention. It is a block diagram which shows a structure required for control of the conveying apparatus concerning this invention. It is a flowchart which shows the control method of the conveying apparatus concerning this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Conveyance device 11 Conveyance device control unit 12 Drive motor 13 Power transmission mechanism 14 Power transmission mechanism 15 Roller 16 Support bracket 17 Frame 18 Alarm device 2 Height adjustment device 2 'Height adjustment device 21 Air spring 22 Outrigger 3 Connection device 3a Engagement Combined side 3b Engaged side 31 Engagement claw 32 Shaft 33 Slide groove 34 Spring 35 Slide lever 36 Engagement shaft 37 Guide bracket 41 Vehicle speed sensor 42 Parking brake switch 43 Shift position switch 44 Connection state detection switch 45 Conveyance device peripheral object sensor 46 Battery voltage sensor 51a Transport device operation switch (driver's seat)
51b Transport device emergency stop switch (driver's seat)
52a Transport device operation switch (loading platform)
52b Transport device emergency stop switch (loading platform)
8 Engine control unit 9 Vehicle 9 'Vehicle 91 Driver's seat 91'Driver's seat 92 Loading platform 92 'Loading platform 92a Upper surface 93 Elastic body B1 Luggage B2 Luggage B3 Luggage T Tire T' Tire

Claims (3)

In a vehicle having a loading platform for loading a load, a transfer device capable of moving the loaded load on the upper surface of the loading platform, a height adjusting device capable of adjusting the height of the loading platform, and the loading platform A vehicle having a cargo bed, comprising: a connecting device that can be connected to a rear edge portion of a vehicle cargo bed provided with another cargo bed at a rear end portion of the vehicle in a state of facing each other. The vehicle with a cargo bed according to claim 1, wherein the transport device includes a drive mechanism having a power source. 3. A vehicle equipped with a cargo bed according to claim 1, wherein the carrier device can be housed inside the cargo bed when not in use.