JPH0657513B2 - Auto-bye delivery vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Field of Industrial Application> The present invention relates to a motorcycle delivery vehicle having an upper loading platform and a lower loading platform.

<Prior Art> Conventionally, as a motorcycle delivery vehicle, there is a motorcycle provided with a lower stage loading platform provided on a vehicle body and an upper stage loading platform provided so as to be vertically movable along a frame by a lifting means. And when loading a motorcycle on the lower deck, in order to improve workability,
A motorcycle is loaded with the upper deck raised to the raised position.

<Problems to be solved by the invention> However, in the above-mentioned conventional motorcycle delivery vehicle, after the driver finishes loading the motorcycle on the lower stage bed, the upper stage platform located at the elevated position does not descend to the fixed position. When traveling, the center of gravity of the vehicle may become so high that it may capsize, or the motorcycle on the upper deck may hit an obstacle and be damaged.

Therefore, an object of the present invention is to provide a motorcycle delivery vehicle that can detect such a rising position of the upper loading platform to avoid such overturning or damage.

<Means for Solving the Problems> In order to achieve the above object, the motorcycle delivery vehicle of the present invention includes a lower stage loading platform provided on a vehicle body and a predetermined position above the lower stage loading platform and an upper portion along a frame. An upper pallet that can be moved up and down to the ascending position, elevating means for elevating and lowering the upper pallet, and a sensor for detecting the upper pallet's rising position.
When the sensor detects that the upper loading platform is in the raised position, it has a stop means for turning off the starter motor of the vehicle engine.

<Operation> When the motorcycle is loaded on the lower stage platform provided on the vehicle body, the upper stage platform is raised along the frame to the raised position by the raising means, and the workability on the lower stage platform can be improved. At that time, the ascending position of the upper stage bed is detected by the sensor. Then, by the output from the sensor, the starter motor of the vehicle engine is turned off by the stopping means, and the motorcycle delivery vehicle is forcibly stopped.

<Example> Hereinafter, the present invention will be described in detail with reference to illustrated examples.

In FIG. 1, reference numeral 1 denotes a lower pallet 2 and an upper pallet 3 on the vehicle body.
And a motorcycle delivery vehicle having. The upper loading platform 3 has frames 12a, 12a fixed to the four corners of the lower loading platform 2.
And can slide up and down along 12b and 12b. To the front part 3a of the upper loading platform 3, the rod tips of the loading platform lifting cylinders 5 installed vertically with the rod facing upward are fixed, and at the rear part 3b, one end 6a of the loading platform lifting wire 6 is attached. ing. The wire 6 has its other end 6b attached to the front end portion 3c of the upper stage carrier 3 through the fixed sprockets 7a, 7b, 7c in order.

Further, on the frames 13 and 13 that are fixed in close contact with the rear frames 12b and 12b, a vertical cargo receiving stand 4 that moves up and down along the frames 13 and 13 is installed. The vertical loading platform 4 has a pin 1 on the brackets 10, 10 that can slide up and down along the frames 13, 13 by a loading platform lifting cylinder.
It is rotatably attached with 1 and 11, and is normally folded in the position of 4a.

The frame 12a is provided with a limit switch 8 as a sensor for detecting the raised position of the upper stage carrier 3, and the limit switch 8 is used when the upper stage carrier 3 is stopped at the raised position 3d indicated by an imaginary line. It is pushed by the front end of the loading platform 3 and turned on.

The loading platform lifting cylinder 12 and the loading platform lifting cylinders 5 and 5 are operated by the hydraulic circuit shown in FIG. A high pressure line 21 connected to a hydraulic pump 20b driven by a motor 20a is connected to a two-position switching valve 22 in order from an upstream side.
And a two-position switching valve 23, and the two-position switching valve 23
Cylinder 1 for lifting and lowering the loading platform via line 24 at the exit side of
The two base ends are connected. A two-position switching valve 26 is connected to a line 25 branched from the two-position switching valve 22, and the base ends of the loading platform lifting cylinders 5 and 5 are connected via a line 27. Further, the return line 29 from the two-position switching valve 22 to the tank 30 and the high pressure line 21.
A relief valve 28 is provided between and.

In addition, the relay circuit shown in FIG.
2, 23, and 26 are controlled. Power line 31
The limit switch 8, the relay coil R ₂ and the pilot lamp PL of the upper stage bed are connected to the line 32 between the power line 31a and the power line 31b, and the relay is connected to the line 33 between the power line 31a and the power line 31b. normally closed contact r ₂ of the coil R _2, connects the starter switch 34 and the starter motor 35 of the vehicle engine of the vehicle. The relay coil R is provided between the ascending side contact A of the loading platform lifting switch 36 in the switch box 9 and the power supply line 31b.
₁ and the connection point 37 between the contact A and the relay coil R ₁ is connected to the ascending side contact F of the load receiving platform elevating switch 38. Connect the Solenoid S ₁ between the raised side contact B and the power supply line 31b of the loading platform elevation switch 36, the contact B
And a connection point 39 between the solenoid and the solenoid S ₁ are connected to the descending side contact E of the loading platform up / down switch 38. In addition, a solenoid S3 is connected between the descending side contact C of the loading platform raising / lowering switch 36 and the power supply line 31b, and the loading platform raising / lowering switch ₃ is connected.
A solenoid S ₂ is connected between the descending side contact D of No. 8 and the power supply line 31b. Furthermore, the line 40 between the power supply line 31a and the power supply line 31b connects the motor 20a for driving the normally-closed contact _{r 1} and the hydraulic pump 20b of the relay coil _{R 1.}

The motorcycle delivery vehicle configured as described above operates as follows.

When loading a motorcycle on the lower deck 2
The switch 41 in the switch box 9 in FIG turn on, connecting the loading platform elevation switch 36 to increase side, the normally closed contact r ₁ of the relay coil R ₁ is turned on and energized relay coil R _1, motor 20a rotates and the hydraulic pump 20b drives. Furthermore, the Sonorade S ₁ is excited,
The two-position switching valve 22 in FIG. 2 switches from the symbol position V ₁₀ to the symbol position V ₁₁ , and pressure oil is supplied from the hydraulic pump 20b driven by the motor 20a to the symbol position V _11.
Symbol position V _{30 in the} non-excited state with the 2-position switching valve 22 of ₁₁
The two-position switching valve 26 is used to supply the cargo bed lifting cylinders 5 and 5 to extend the cargo bed lifting cylinders 5 and 5. Then, in FIG. 1, the loading platform lifting cylinder 5,
When 5 is extended, the front portion 3a of the upper stage loading platform 3 attached to the rod tips of the loading platform lifting cylinders 5 and 5 is raised. At the same time, one end 6b of the wire 6 attached to the front end portion 3c of the upper loading platform 3 is pulled and the sprocket 7c,
The other end 6a of the wire 6 is pulled via 7b and 7a.
Since the extension distances of the loading platform lifting cylinders 5 and 5, the moving distance of the one end 6b of the wire 6 and the moving distance of the other end 6a of the wire 6 are the same, the upper loading platform 3 is parallel to the predetermined rising position. Ascend to 3d.

When the upper loading platform 3 is lifted to a predetermined lifting position 3d and the lifting side connection of the loading platform lifting switch 36 in FIG. 3 is disconnected, the relay coil R ₁ is not excited and the relay coil R ₁
The normally closed contact point r ₁ is turned off, the hydraulic pump 20b is stopped, and the supply of the pressure oil to the bed raising cylinders 5 and 5 is stopped, so that the upper stage bed 2 is stopped at a predetermined rising position.
Further, the solenoid S ₁ becomes non-excited and the 2-position switching valve 22 switches to the symbol position V ₁₀ .

Next, in FIG. 1, the load receiving tray 4 folded at the position 4a is unloaded to the parallel position indicated by the imaginary line 4b, and the lower side of the load receiving tray raising / lowering switch 38 near the switch box 9 in FIG. When connected, the solenoid relay S ₁ is excited to switch the 2-position switching valve 22 in FIG. 2 from the symbol position V ₁₀ to the symbol position V _11, and the solenoid relay S ₂ is excited to switch the 2-position switching valve 23 to the symbol position V 11. _After switching from ₂₀ to the symbol position V ₂₁ , the pressure oil in the cylinder 12 for lifting and lowering the cradle passes through the two-position switching valve 23 at the symbol position V ₂₁ , the two-position switching valve 22 at the symbol position V ₁₁ , and the tank 30 through the line 29. At the same time, the cylinder 12 for raising and lowering the pedestal is contracted by its own weight. Along with this, the load carrier 4 in FIG. 1 installed on the load carrier lifting cylinder 12 by means of a member (not shown) descends to a position 4c in contact with the ground shown by an imaginary line, and a motorcycle can be easily loaded.

When the load receiving platform 4 is lowered to the position 4c where it comes into contact with the ground and the lower side connection of the load receiving platform raising / lowering switch 38 in FIG. 3 is disconnected, the solenoids S ₁ and S ₂ are de-energized, and The two-position switching valve 22 is switched to the symbol position V ₁₀ and the two-position switching valve 23 is switched to the symbol position V ₂₀ , respectively, and the load receiving table 4 is stopped at the position 4c. Next, in a state carrying the motorcycle receiving platform and connecting the receiving platform lifting switch 38 of FIG. 3 in ascending side are energized relay coil R _1, TeiHiraku contact r ₁ of the relay coil R ₁ is turned on , pressure oil from the hydraulic pump 20b in FIG. 2 are supplied to the 2-position switching valve 22, as receiving platform lifting cylinder 12 the 2-position switching valve 23 symbol position V ₂₀ the symbol position V _10, receiving platform While the lifting cylinder 12 is extended, the load carrier 4 of FIG. 1 is raised to the same level position 4b as the lower load carrier 2 shown by an imaginary line. When the loading platform 4 is lifted to the position 4b, the lifting coil 38 of the loading platform lifting switch 38 shown in FIG.
₁ normally closed contact r ₁ of the relay coil R ₁ is not energized is turned off, the hydraulic pump 20b of FIG. 2 is stopped and the receiving platform is stopped at a position 4b, easily motorcycle from receiving platform to the lower loading platform 2 You can move. At that time, since the upper cargo bed 3 is stopped at the raised position, the workability of the lower cargo bed 2 is good.

Next, in the case of loading a motorcycle on the upper loading platform 3, when the loading platform up / down switch 36 of FIG. 3 is connected to the lower side, the solenoid S ₃ is excited and the symbol position V ₃₀ of the 2-position switching valve 26 of FIG. Is switched to the symbol position V _31, and the pressure oil inside the loading platform lifting cylinders 5 and 5 is changed to the 2-position switching valve 26 at the symbol position V ₃₁ , the 2-position switching valve 22 at the symbol position V ₁₀ ,
Then, it returns to the tank 30 through the line 29, and the upper and lower loading platform lifting cylinders 5 and 5 contract by its own weight. When the upper loading platform lifting cylinders 5 and 5 in FIG. 1 contract, the front portion 3a, the front end portion 3c and the rear portion 3b of the upper loading platform 3 are simultaneously lowered by the same distance as in the case of the above-described raising. The upper loading platform 3 can be lowered in parallel to the fixed position 3e. When the upper bed 3 is lowered to the fixed position 3e, the lower side of the bed lifting switch 36 of FIG. 3 is turned off.
Solenoid S ₃ is deenergized, Setsu換Ri symbol position V ₃₁ the 2-position switching valve 26 of FIG. 2 is a symbol position V _30,
The return of the pressure oil in the loading platform lifting cylinders 5, 5 to the tank 30 is stopped, and the upper loading platform is stopped at the fixed position 3e.

Here, as described above with respect to the loading platform of FIG. 1, by switching the loading platform up / down switch 38, the loading platform 4 is moved to the positions 4b and 4c, and the fixed position 3e of the upper loading platform 3 shown by imaginary lines. It is possible to load the motorcycle on the upper loading platform 3 by moving it between the position 4d and the position 4d at the same level.

In the above operation, when the upper deck 3 is stopped at the raised position 3d, the limit switch 8 shown in FIG. 3 is turned on by being pushed by the front end of the upper deck 3, and the pilot mounted on the driver's seat of the vehicle. The lamp PL lights up and the relay coil R ₂ is excited. Along with this, the normally closed contact r ₂ of the relay coil R ₂ is turned off, the vehicle starter switch 34
Even when the switch is turned on, the starter motor 35 of the vehicle engine does not operate, and the motorcycle delivery vehicle cannot start. Therefore, there is no risk of the vehicle overturning or the motorcycle of the upper deck 3 hitting an obstacle.

Although the limit switch 8 is used as the lifted position detection sensor of the upper loading platform 3 in the present embodiment, a photoelectric switch or the like may be used.

<Effects of the Invention> As is clear from the above, the motorcycle delivery vehicle of the present invention is provided with the lower stage carrier on the vehicle body and the upper stage carrier which is vertically movable along the frame by the elevating means. By locating the upper loading platform at the elevated position when loading the truck, the workability of the lower loading platform can be improved.

In addition, a sensor that detects the rising position of the upper deck,
Since the output from this sensor is provided with a stopping means that turns off the starter motor of the vehicle engine, the motorcycle delivery vehicle can be forcibly stopped when it detects that the upper cargo bed is in the raised position. , It is possible to prevent the vehicle from overturning or the motorcycle of the upper loading platform from hitting an obstacle.

[Brief description of drawings]

FIG. 1 is a side view of a motorcycle delivery vehicle according to the present invention, FIG. 2 is a hydraulic circuit diagram for supplying pressure oil to a load receiving platform raising and lowering cylinder and a load platform raising and lowering cylinder, and FIG. FIG. 1 ... Motorcycle delivery vehicle, 2 ... Lower loading platform, 3 ... Upper loading platform, 3e ... Fixed position, 3d ... Up position, 8 ... Limit switch (sensor), 12a ... Frame, 12b ... Frame, 35 ... Starter motor.

Claims (1)

[Claims] 1. A lower pallet provided on a vehicle body, an upper pallet which is vertically movable from a fixed position appropriately above the lower pallet to an upper raised position along a frame, and elevating means for raising and lowering the upper pallet. And a sensor for detecting a lifted position of the upper deck, and a stop means for turning off a starter motor of an engine of the vehicle when the sensor detects that the upper deck is in a raised position. And a motorcycle delivery car.