JP2789442B2 - Truck unloading device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an unloading device for trucks used in ready-mixed concrete factories, asphalt composite material factories, etc., for unloading cargo transported by truck into a hopper or the like.

[0002]

2. Description of the Related Art Conventionally, raw concrete materials such as gravel and crushed stone and asphalt composite materials have been transported to a ready-mixed concrete plant or an asphalt composite material factory using a dump truck.

[0003]

The transportation of ready-mixed concrete materials and the like in a conventional dump truck has been carried out by loading a dump truck which has a legally larger loading capacity. However, the enforcement of laws and regulations has led to strict enforcement, and transportation has to be carried out using a large number of dump trucks. However, there are drawbacks in that expensive dump trucks are difficult to purchase and transportation costs are high.

The present invention has been made in view of the above-mentioned conventional drawbacks,
Just like a dump truck, an ordinary truck can easily unload ready-mixed concrete and other materials, reducing transportation costs and preventing damage to the license plate and mudguard when unloading. It is an object of the present invention to provide a truck unloading device that can be prevented.

[0005] The foregoing and other objects and novel features of the invention will become more fully apparent when the following description is read in conjunction with the accompanying drawings. However, the drawings are for explanation only, and do not limit the technical scope of the present invention.

[0006]

In order to achieve the above object, the present invention provides a truck support on which a truck can be mounted and a truck license plate or a mudguard at a portion near the rear of the truck support. A stopper member, which is located in a storage area through which the vehicle can pass and projects upwardly when passing therethrough, and is pivotally supported by a pivot pin for abutting against a rear wheel of the truck to prevent backward movement of the truck; When the license plate or mudguard of the truck passes through, the sensor link mechanism for rotating the stopper member so as to protrude upward by the rearward movement of the rear wheel of the truck and the stopper member are always automatically located at the storage area. A stopper mechanism including a return mechanism, and a track mechanism mounted on the track support base. Bed of luggage constitute the unloading track device and rotating device for rotating the track support table to automatically dropped from the rear.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the drawings.

In the first embodiment of the present invention shown in FIGS. 1 to 8, reference numeral 1 denotes a pit 4 on the ground or floor 3 on which a hopper 2 for receiving ready-mixed concrete material is installed.
The truck unloading device 1 according to the present invention is formed and installed. The truck unloading device 1 includes a pedestal 5 installed in the pit 4, and a rear portion pivotally supported so as to cover an upper portion of the pedestal 5. A track support 8 on which a track 7 can be mounted is rotatably attached to the rear of the pedestal 5 by a pin 6, and a track 7 attached to a portion near the rear end of the track support 8. A stopper mechanism 10 that projects upward when the rear license plate or the mudguard has passed and contacts the rear wheel 9 to prevent the truck 7 from moving rearward, and one end is fixed to the lower surface on both front sides of the pedestal 5. Pivot pins 12, 12 are attached to the mounting brackets 11, 11.
And a pair of hydraulic cylinders 15, 15 pivotally supported by pivot pins 14, 14, respectively, on mounting brackets 13, 13, the other ends of which are fixed to the bottom surface of the center of both sides of the truck support 8 at the other end. A rotation device 16 for rotating the track support 8 by about 45 degrees, and a front lock of the truck 7 mounted on the track support 8 attached to a portion near the tip of the track support 8. Bracket 17, 17
And supporters 19, 19 having hooks 18, 18 at their distal ends.

The stopper mechanism 10 is shown in FIGS.
As shown in the figure, a shaft 21 rotatably mounted by bearings 20, 20, 20, 20 mounted on the rear end of the track support 8 and the bearings 20, 2 of the shaft 21.
The upper portion fixed to a portion corresponding to the rear wheels 9, 9 of the truck 7 placed on the truck support 8 between 0, 20, and 20 has a J-shape in which the upper portion is inclined forward, and a through hole 22 is formed in a lower intermediate portion. Stopper members 23, 23, stopper member storage recesses 24, 24 formed in the track support base 8 so that the stopper members 23, 23 can be stored substantially horizontally, and the stopper members 23, 23 are erected. A stopper piece 25 fixed to the tip end of the track support 8 to be stopped in a state, and the stopper member 2
The rear wheels of the truck 9 are positioned so that the rear license plate or the mudguard of the truck 7 placed on the truck support 8 passes through the front ends of the stopper members 23, 23 from the retracted state of the trucks 3 and 23. According to the present embodiment, the sensor link mechanisms 26, 26 for rotating the stopper members 23, 23 so as to protrude upward by the movement of 9, 9 and the stopper members 23, 23 are automatically positioned in the always-stored state. In the embodiment, the stopper members 23, 2
3 uses its own weight, but is configured with a return mechanism 28 using a balance weight 27 or the like to prevent a sudden return.

The sensor link mechanisms 26, 26 are provided with levers 29, 29 fixed to the bearings 20, 20 and a shaft 21 between the bearings 20, 20, respectively.
The track support 8 at a position corresponding to the rotation direction of the track 29
Link insertion holes 30, 30 formed at the front end of the track support base 8 near the front of the link insertion holes 30, 30.
Inverted sensor arms 33, 33 each having a roller 32 abutting against the rear wheels 9, 9 of the truck 7 at the tip mounted rotatably with pivot pins 31, 31 on the bottom surface of the vehicle.
And one end is connected to the free end of the lever 29, 29 by a pivot pin 3.
4, 34, the other end of the sensor arm 33,
The pivot pins 35, 3 are located at a position lower than the center of 33.
5 and connecting arms 36, 36 pivotally supported.

In the truck unloading apparatus 1 having the above-described configuration, the truck 7 loaded with the ready-mixed concrete material or the like is placed on the truck support 8 by the back. At this time, the back of the truck 7 causes the rear license plate or the mudguard 37, 37 to pass through the tip of the stopper member 23, 23, and then the roller 32 of the sensor arm 33, 33 of the sensor link mechanism 26, 26. The rear wheels 9, 9 abut against 32 and rotate the sensor arms 33, 33 backward.

By the rotation of the sensor arms 33, the connecting arms 36, 36 are rotated so as to move backward, and the levers 29, 29 in the inclined position are rotated to the standing position. The shaft 21 is rotated by the rotation of the levers 29, 29, and the stopper members 23, 23 are positioned in an upright state. The stopper members 23, 23 abut against the rear wheels 9, 9 moving rearward to stop the retraction of the truck 7. Let it.

In this state, the front of the truck 7 is supported on the truck support 8 by the support 19 if necessary.

Next, when the rotating device 16 is operated to rotate the track support 8 by about 45 degrees about the pivot pin 6 as a fulcrum as shown in FIG.
The ready-mixed concrete material and the like loaded from the rear end automatically fall and are put into the lower hopper 2.

When all of the ready-mixed concrete material and the like on the loading bed 38 of the truck 7 is discharged, the rotating device 16 is operated, the truck support 8 is positioned substantially horizontally, and the truck 19 is removed by removing the support 19. The next operation can be performed by moving the next truck 7 on which the ready-mixed concrete material or the like has been loaded from the table 8 on the track support table 8.

[0016]

Different embodiments of the present invention and a truck unloading device devised by the inventor of the present invention. Next, different embodiments of the present invention shown in FIGS. 9 to 14 and a truck unloading device devised by the present inventor will be described. explain. In describing the different embodiments of the present invention and the truck unloading device considered by the present inventor, the same reference numerals are given to the same components as those in the first embodiment of the present invention. And a duplicate description will be omitted.

The second embodiment of the present invention shown in FIGS. 9 to 11 is mainly different from the first embodiment of the present invention in that the dump truck 39 is installed in the pit 4 and In the point that the loading platform 39 is modified to the truck supporting platform 8 on which the stopper mechanism 10 is installed, the truck unloading apparatus 1A thus configured has the same operation and effect as the first embodiment of the present invention. Is obtained.

In the truck unloading device shown in FIGS. 12 to 14 which the present inventor considered, the main difference from the first embodiment of the present invention is that the stopper mechanisms 10A, 1
0A, the stopper mechanisms 10A, 10A are provided with stopper members 23, 23 so as to always protrude upward by the balance weights 27, 27, and the stopper members 2
Locking pieces 40 and 40 for locking the locks 3 and 23 in the storage state, and releasing pieces 41 and 41 for releasing the locking state of the locking pieces 40 and 40 by the pressing force of the rear wheels 9 and 9 of the truck 7. With the provision of the release mechanisms 42, 42, the truck unloading device 1B configured as described above can achieve the same operation and effect as those of the first embodiment of the present invention.

In each of the embodiments of the present invention, the description has been given of the case using the turning device 16 for turning the track support base upward by the hydraulic cylinder. However, the present invention is not limited to this, and the portal frame is not limited to this. An electric winch may be installed on the upper part of the vehicle to enable the truck support to rotate.

[0020]

As apparent from the above description, the following effects can be obtained in the present invention.

(1) A truck support on which a truck can be mounted, and a number plate or a mudguard of the truck which is always located at a position near the rear of the truck support and which can pass therethrough. Then, a stopper member protruding upward and abutting on the rear wheel of the truck to prevent the rearward movement of the truck, which is pivotally supported by a pivot pin. A stopper mechanism consisting of a sensor link mechanism for rotating the stopper member so as to protrude upward by a backward movement of the stopper member and a return mechanism for automatically positioning the stopper member always in the storage area; The luggage in the truck bed of the truck on which it falls is automatically dropped from the rear It is configured with a rotating device for rotating the truck support, so that the rear wheel of the truck mounted on the truck support can be stopped by the stopper mechanism without damaging the rear license plate and mudguard of the truck. it can. Therefore, the truck support can be completely rotated, and the cargo on the truck carrier can be discharged more efficiently and in a shorter time than the rear part, similarly to the conventional dump truck.

(2) According to the above (1), the upright stopper member can always be automatically stored, so that the upright stopper member is reliably prevented from being damaged by the rear license plate of the truck or mudguard. it can.

(3) According to the above (1), ready-mixed concrete material and the like can be transported using an inexpensive truck, and the transportation cost can be reduced.

(4) According to the above (1), the structure is simple, so that it can be easily installed and used easily.

(5) According to (1), the truck can be used like a dump truck, so that the transportation cost can be reduced.

(6) According to the above (1), the stopper mechanism can be operated so that the rear wheels of the truck mounted on the truck support can be automatically stopped. Therefore, it is possible to reliably prevent an accident in which the rear wheels of the truck are excessively moved and fall from the support base by mistake.
Even a poor driver can safely go back.

(7) According to the above (1), the stopper member is automatically operated to be located at the stopper position and the storage position by the sensor link mechanism and the return mechanism of the stopper mechanism. Can be used for

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a use state of a first embodiment of the present invention.

FIG. 2 is a side view of the first embodiment of the present invention.

FIG. 3 is a plan view of the first embodiment of the present invention.

FIG. 4 is an explanatory view of a support according to the first embodiment of the present invention.

FIG. 5 is a plan view of the stopper mechanism according to the first embodiment of the present invention.

FIG. 6 is a rear view of the stopper mechanism according to the first embodiment of the present invention.

FIG. 7 is an enlarged sectional view taken along line 7-7 of FIG. 5;

FIG. 8 is an explanatory diagram showing an operation state of the stopper mechanism according to the first embodiment of the present invention.

FIG. 9 is an explanatory diagram of a use state according to the second embodiment of the present invention.

FIG. 10 is a side view of the second embodiment of the present invention.

FIG. 11 is a plan view of a second embodiment of the present invention.

FIG. 12 is an explanatory diagram of a use state of the truck unloading device considered by the present inventor.

FIG. 13 is a plan view of a stopper mechanism of the truck unloading device considered by the present inventors.

FIG. 14 is a sectional view taken along the line 14-14 in FIG. 13;

[Explanation of symbols]

 1, 1A, 1B: truck unloading device, 2: hopper, 3: floor surface, 4: pit, 5: pedestal, 6: pivot pin, 7: truck, 8: truck support, 9: rear wheel, 10: stopper mechanism, 11: mounting bracket, 12: pivot pin, 13: mounting bracket, 14: pivot pin, 15: hydraulic cylinder, 16: rotating device, 17: locking bracket, 18: hook, 19: 20: bearing, 21: shaft, 22: through hole, 23: stopper member, 24: stopper member storage recess, 25: stopper piece, 26: sensor link mechanism, 27: balance weight, 28: return mechanism, 29 : Lever, 30: Link insertion hole, 31: pivot pin, 32: roller, 33: sensor arm, 34: pivot pin, 35: pivot pin, 36: connecting arm, 37: mudguard, 3 8: carrier, 39: dump truck, 40: locking piece, 41: release piece, 42: release mechanism.

Claims (1)

(57) [Claims] 1. A truck support on which a truck can be mounted, and a portion near a rear portion of the truck support which is always located at a storage portion through which a license plate or mudguard of the truck can pass. A stopper member protruding upward and pivotally supported by a pivot pin for abutting against the rear wheel of the truck to prevent the rearward movement of the truck. A stopper mechanism comprising a sensor link mechanism for rotating the stopper member so as to protrude upward by a backward movement, and a return mechanism for automatically positioning the stopper member always in the storage area; The truck so that the load on the truck bed of the truck is automatically dropped from the rear. A truck unloading device comprising: a rotating device for rotating a rack support.