JP5682860B2 - Rear opening / closing assist device of vehicle attached to vehicle and opening / closing assist method thereof - Google Patents

Description

  The present invention relates to a device for assisting in opening and closing a rear tilt plate (rear tilt plate) of a load platform of a vehicle (hereinafter simply referred to as “vehicle”) provided with a load platform such as a truck or a trailer. The present invention relates to a device that assists in opening and closing the rear tilt plate when unloading in an accumulation pit.

  Many vehicle loading platforms are made up of plate-like members called tilt plates that can be opened and closed with the lower end thereof as the center of rotation in order to easily load, transport and unload loads. As shown in FIG. 1, the lower part of the side tilt plate 53 and the rear tilt plate 54 of the vehicle 51 and the loading platform 52 are connected by a hinge 56, and the side tilt plate 53 and the rear tilt plate 54 are respectively connected to each other. It is structured to be fixed in a closed state by a part called a pawl stop 55 that can be opened and closed by a handle operation.

By the way, when it becomes a large vehicle, the weight of the tilting plate itself becomes heavy, and it becomes difficult to open and close by human power. In order to solve this problem, there has conventionally been provided a device that assists opening and closing by human power, as described in Patent Document 1, for example.
However, when the vehicle load is a granular solid (eg sand, pellets, etc.), the load caused by the load is also applied to the tilt plate. Even if an opening / closing auxiliary device is attached, considerable force is required.

  When the load is a granular solid, as shown in FIG. 2, the carried load 57 may be directly discharged to the accumulation pit 60 positioned below the surface of the traveling path 58. In such a case, since the opening / closing operation of the rear tilt plate 54 is performed in the vicinity of the accumulation pit 60, there is a danger that the worker 61 will fall into the accumulation pit 60 during the operation, which is very dangerous. There was a problem that it would be a difficult task.

JP 2000-153783 A

  It is an object of the present invention to provide a rear tilt plate opening / closing assist device and a rear tilt plate opening / closing assist method capable of opening and closing a rear tilt plate of a vehicle safely and lightly even in the vicinity of a pit. .

The present inventors do not provide an opening / closing assist device for each vehicle, but a drive device having a rotation shaft, a vertical arm member attached at right angles to the rotation shaft, and a horizontal arm attached to the vertical arm member. A rear tilt plate opening / closing auxiliary device having an arm member and a roller attached to the horizontal arm member so as to be rotatable is installed near a stop position of the vehicle, and the driving device is driven to rotate the vertical arm member. And the roller presses the rear tilt plate so that the rear tilt plate does not open, and the vertical arm member is rotated in the reverse direction to release the pressing force on the rear tilt plate by the roller. The present invention was completed by finding that the rear side plate can be opened and closed safely and easily by opening the rear side plate. It was.
That is, the present invention relates to a rear tilt plate opening / closing auxiliary device as described below.

(1) A rear tilt plate opening / closing assisting method for assisting in opening / closing of a rear tilt plate of a loading platform attached to a vehicle, wherein pressing means for pressing the rear tilt plate from the rear of the loading platform near a stop position of the vehicle. Provided, when the vehicle stops at the stop position, press the rear tilt plate by the pressing means so that the rear tilt plate does not open, and then the worker releases the tilt stop of the rear tilt plate, A rear tilt plate opening / closing assisting method, wherein the pressing force to the rear tilt plate by the pressing means is released.
(2) A rear tilt plate opening / closing assisting device for assisting in opening / closing of a rear tilt plate of a loading platform attached to a vehicle,
A drive device having a rotation shaft that faces a horizontal direction with respect to the ground surface, a vertical arm member attached at right angles to the rotation shaft, a horizontal arm member attached to the vertical arm member, and rotating to the horizontal arm member A roller mounted in a possible state, and by rotating the rotating shaft by the driving device and rotating the horizontal arm member around the axis of the rotating shaft, the roller comes into contact with the rear side plate and presses The rear tilt plate is not opened, and then the horizontal arm member is rotated in the reverse direction around the axis of the rotation shaft to release the pressing force on the rear tilt plate by the roller. Features a rear tilt plate opening / closing assist device.
(3) The driving device and the vertical arm are installed outside the vehicle body width dimension of the vehicle, and the horizontal arm is installed facing the vehicle width direction inside from the vertical arm member, and the rotation shaft rotates. The rear tilt plate opening / closing auxiliary device according to (2), wherein the center line substantially coincides with the rotation center line of the rear tilt plate of the vehicle.
(4) The rear tilt plate opening / closing auxiliary device according to (2) or (3), which is fixedly installed on a truck damper.
(5) The rear tilt plate opening / closing auxiliary device according to (2) or (3), which is fixedly installed on the floor of the facility.
(6) A method of assisting the opening and closing of the rear tilt plate of the vehicle using the rear tilt plate opening / closing assist device according to any one of (2) to (5).

  By using the rear tilt plate opening / closing auxiliary device of the present invention, the rear tilt plate of the vehicle can be opened and closed safely and lightly even in the vicinity of the pit.

It is a figure which shows the structure of the loading platform of a truck. It is a figure which shows a mode that the load of a granular solid substance is discharged | emitted from a truck bed to an accumulation pit. It is a figure which shows an example of the plant | facility to which the rear tilt board opening / closing auxiliary | assistance apparatus of this invention is applied. It is a figure explaining embodiment of the back tilt board opening / closing auxiliary | assistance apparatus of this invention. It is a figure explaining operation | movement of the rear tilt board opening / closing auxiliary | assistance apparatus of this invention. It is a figure explaining operation | movement of the rear tilt board opening / closing auxiliary | assistance apparatus of this invention.

The rear tilt plate opening / closing auxiliary device for assisting the opening and closing of the rear tilt plate of the vehicle of the present invention includes the following basic components.
A driving device having a rotating shaft that faces a horizontal direction with respect to the ground surface. A vertical arm member attached at right angles to the rotating shaft. A horizontal arm member attached to the vertical arm member. A rotatable to the horizontal arm member. Roller attached to the state In use, the rear tilt plate opening / closing auxiliary device is installed in a pair at substantially symmetrical positions with the center line of the loading platform of the vehicle as the axis of symmetry.

  When the vehicle enters in the back and stops at the stop position, the drive unit is driven in the direction in which the vertical arm member rises vertically, whereby the horizontal arm member and the roller attached to the horizontal arm member approach the rear tilt plate. Then, they are brought into contact with each other and then pressed. When in this state, the worker performs an operation of releasing the tilt stop that holds the rear tilt plate. Even if the tilt stop is opened, the rear tilt plate is pressed by the roller, so the rear tilt plate does not open, and the worker can work safely. Next, after the worker evacuates, the vertical arm member is rotated so that the driving device releases the pressing force of the roller, so that the rear side plate is pushed by its own weight or the load of the granular solid material that is the load. open.

  Embodiments of the rear tilt plate opening / closing auxiliary device of the present invention will be described below with reference to the drawings. However, these embodiments are merely examples, and the present invention is not limited to these embodiments.

(First embodiment)
In the present embodiment, a case where the rear tilt plate opening / closing auxiliary device is used by being fixed on a gantry fixed to a track damper is shown.
A first embodiment of the present invention will be described with reference to FIGS.
FIG. 3 is a diagram showing an example of a facility to which the present invention is applied. The trailer 70 loaded with granular solids and entering the traveling path 58 in the back stops at the position of the wheel stopper 63 on the truck damper 62. After stopping, the trailer tow vehicle 70A separates and retracts the trailer portion 70B. After that, the operator operates the rear tilt plate opening / closing auxiliary device 10 of the present invention to open the rear tilt plate.

FIG. 4 is a three-side view showing the configuration of the rear tilt plate opening / closing auxiliary device of the present invention.
The rear tilt plate opening / closing auxiliary device 10 is fixed on a pedestal 17 fixed to a truck damper 62, and is installed in a pair at almost right and left target positions with a trailer center line as an axis of symmetry. This apparatus is configured such that the rotating shaft 13 is rotated by the driving device 11 and the movable portion 20 connected to the rotating shaft 13 is rotationally driven. Examples of the driving device 11 include an electric motor and a hydraulic swing motor.

  The rotation shaft 13 is placed at a position where the rotation center line 15 substantially coincides with the rotation center line 16 of the rear tilt plate 54. When the position of the rotation center line 16 of the rear tilt plate 54 varies depending on the type of the trailer 70, the rotation center line 15 of the rotation shaft 13 may be brought to the average position.

  A vertical arm 21 is fixedly installed at one end of the rotary shaft 13, and a horizontal arm 22 is fixed to the other end of the vertical arm 21 toward the inner side in the width direction of the trailer so as to form a right angle with the vertical arm 21. ing. A roller 23 is rotatably attached to the tip of the horizontal arm 22 via a bearing 24.

  Further, the driving device 11 and the vertical arm 21 are installed outside the maximum vehicle body width dimension of the trailer 70 so as not to interfere when the trailer 70 enters in the back, and from there, the roller via the horizontal arm 22 By bringing 23 to the support position of the rear tilt plate 54, the rear tilt plate 54 can be supported by the roller 23 without interference between the rear tilt plate opening / closing auxiliary device 10 and the trailer 70.

FIG. 5 is a diagram for explaining an operation example of the rear tilt plate opening / closing assist operation by the present apparatus.
When the trailer unit 70B stops at a predetermined position, first, as shown in FIG. 5A, the movable unit 20 of the rear tilt plate opening / closing auxiliary device 10 that was at the initial position is rotated, and the roller 23 is moved to the rear tilt plate 54. Press.
Next, an operator (not shown) opens the tilt stop 55 that holds the rear tilt plate 54. At this time, the rear tilt plate 54 is supported by the roller 23, so that the rear tilt plate 54 is Never open. When the operation is started by operating the operation panel (not shown) after the worker evacuates, as shown in FIG. 5B, the roller 23 rotates slowly while supporting the rear tilt plate 54, and the rear tilt plate. 54 is opened and stopped at a predetermined position, and the opening operation of the rear tilt plate 54 is completed.

  Next, as shown in FIG. 6, the truck damper 62 is dumped up by a drive mechanism (not shown), and after the particulate solids 57 loaded on the loading platform are all discharged into the accumulation pit 60, the truck damper 62 is dumped down. To return to the original position. Further, when closing the rear tilt plate 54, it can be performed manually because it can be performed with a light force as much as the load caused by the load is no longer applied. The reverse operation may be performed.

  In the above description, the case of the trailer has been described as an example. However, when the truck is dumped up with the truck damper as it is, or without using the truck damper 62, the granular solid material 57 is manually moved from the loading platform into the accumulation pit 60. The present embodiment can also be applied to the case of discharging the gas.

(Second embodiment)
In this embodiment, the rear tilt plate opening / closing auxiliary device 10 is fixedly installed on the floor of the facility.
In the first embodiment, the rear tilt plate opening / closing auxiliary device 10 is fixed and installed on the truck damper 62 via the gantry 17, but the granular solid material is manually removed from the carrier without using the truck damper 62. In a discharge facility or the like, the rear tilt plate opening / closing auxiliary device 10 may be fixedly installed on the floor of the facility.
In addition, when it is desired to fix and install this device on the facility floor in a facility where the truck damper 62 is used, after the opening operation of the rear tilt plate 54 is completed, the rear tilt plate opening / closing auxiliary device 10 is slid outward in the vehicle width direction of the vehicle. It is only necessary to provide a mechanism so that the rear tilt plate opening / closing auxiliary device 10 is allowed to escape outward in the vehicle width direction of the vehicle so that the rear damper plate opening / closing auxiliary device 10 does not interfere even when the truck damper 62 rises.

  In the first and second embodiments described above, the case where the particulate solid is used in the facility for discharging the solid solid into the discharge pit has been described, but the present invention is used in the facility for discharging the granular solid into the discharge pit. The present invention is not limited to this and can be widely applied when it is necessary to open and close the rear tilt plate of the vehicle without human intervention.

DESCRIPTION OF SYMBOLS 10 Rear tilt board opening / closing auxiliary | assistant apparatus 11 Drive apparatus 12 Bearing 13 Rotating shaft
15 Rotation center line 16 of rotation shaft 16 Rotation center line 17 of rear tilt plate 17 Base 20 Movable part 21 Vertical arm 22 Horizontal arm 23 Roller 24 Bearing 51 Vehicle 52 Loading platform 53 Side tilt plate 54 Rear tilt plate 55 Back stop 56 Hinge 57 Load ( Granular solid)
58 Traveling path 60 Accumulated pit 61 Worker 62 Truck damper 63 Wheel stopper 70 Trailer 70A Trailer towing vehicle 70B Trailer part

Claims (6)

  A rear tilt plate opening / closing assisting method for assisting opening / closing of a rear tilt plate of a loading platform attached to a vehicle, wherein a pressing means for pressing the rear tilt plate from the rear of the loading platform is provided near a stop position of the vehicle, When the vehicle stops at the stop position, the pressing means presses the rear tilt plate so that the rear tilt plate does not open, and then the operator releases the tilt stop of the rear tilt plate, and then the pressing means A rear tilt plate opening / closing assisting method characterized by releasing the pressing force to the rear tilt plate by the step.   A rear tilt plate opening / closing assisting device for assisting in opening / closing of a rear tilt plate of a loading platform attached to a vehicle, and a drive device having a rotating shaft oriented in a horizontal direction with respect to the ground surface, and attached to the rotating shaft at a right angle A vertical arm member; a horizontal arm member attached to the vertical arm member; and a roller attached to the horizontal arm member so as to be rotatable. The horizontal arm member is configured to rotate a rotation shaft by the driving device. Is rotated around the axis of the rotary shaft so that the roller comes into contact with the rear tilt plate and is pressed to prevent the rear tilt plate from opening, and then the horizontal arm member is reversed around the axis of the rotary shaft. A rear-tilt plate opening / closing auxiliary device, wherein the pressing force against the rear-tilt plate by the roller is released by rotating in the direction.   The drive device and the vertical arm are installed outside the vehicle body width dimension of the vehicle, the horizontal arm is installed facing the vehicle width direction inside from the vertical arm member, and the rotation center line of the rotary shaft is The rear tilt plate opening / closing auxiliary device according to claim 2, wherein the rear tilt plate substantially coincides with a rotation center line of the rear tilt plate of the vehicle.   4. The rear-tilt plate opening / closing auxiliary device according to claim 2 or 3, wherein the rear-tilt plate opening / closing auxiliary device is fixedly installed on a truck damper.   4. The rear tilt plate opening / closing auxiliary device according to claim 2 or 3, wherein the device is fixedly installed on a floor of a facility.   A method for assisting the opening and closing of a rear tilt plate of a vehicle using the rear tilt plate opening / closing assist device according to any one of claims 2 to 5.

Images