JPH0240528B2 - UNPANYOSHARYO - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention is particularly useful in the premises of a factory, etc.
This invention relates to a self-propelled transport vehicle that is used to transport large objects such as steel pipes.

(Prior art) Conventionally, large objects loaded on pallets and transported are covered with covers installed on each pallet to protect the objects from rain, dust, etc. It was being transported from the unloading position to the loading position.

(Problem to be solved by the invention) Therefore, when transporting objects, not only are the same number of covers as there are pallets required, but also the work of loading and unloading the objects onto and from the pallets and the loading space are limited to the number of covers. There were some problems that were hindering this.

SUMMARY OF THE INVENTION An object of the present invention is to provide a transportation vehicle that can solve the above-mentioned problems and simplify the work of transporting objects, and can secure a loading space for objects.

(Means for Solving the Problems) The transport vehicle of the present invention has a substantially shaped front face and a pair of guide rails installed on the upper surface of the pallet for transporting objects on the pallet together with the pallet. A downward-opening cover is installed on the carrier body, which is formed to allow entry into the pallet, and which moves over the pallet to cover the transported object when the carrier body enters the pallet. A suitable number of guide rollers are attached to the edges for rolling on the guide rails, and the carrier body and the cover are attached to both sides near the front and rear ends of the cover. one pair of front and rear cover brackets,
a pair of front and rear connecting rods each supported by the carrier body so as to be able to advance to a position directly below the cover bracket and retract within the vehicle width of the carrier body, and each of which is extendable and retractable in the vertical direction; and have a releasably linked configuration.

[Function] A carrier body that travels to transport objects on a pallet and unload them at a predetermined position is moved into or out of the pallet with a cover installed on the carrier body. At this time, among the pair of front and rear connecting rods that are supported by the carrier body and releasably connect the carrier body and the cover, both the connecting rods on the approach direction side or the opposite side to the exit direction are retracted downward, and the vehicle By displacing this rod within the width,
With the cover disengaged from the cover bracket attached to the cover, guide rollers attached to the lower edges of both sides of the cover are rolled on guide rails laid on the pallet to move the cover onto the pallet. or remove it from the pallet. Further, after the carrier body enters into the pallet or leaves the pallet, both the connecting rods on the side in the approaching direction or in the opposite direction to the leaving direction are displaced outside the vehicle width and extend upward to connect the two connecting rods. Reconnect the rod and the cover bracket.

(Example) Next, an example of the present invention will be described with reference to the drawings.

In Figs. 1 to 7, in a self-propelled transport vehicle A installed to transport large objects such as steel pipes, an object B is mounted on a pallet 2 with a shaped front. A horizontal floor surface 1 is formed in an oblong shape in order to load and transport the materials together with the pallets 2.
The carrier body 1 with a has an appropriate number of running wheels 3~
3, the height and width of which are set so that it can enter into the pallet 2, and at both front and rear ends there are driver's cabs 4, for forward and reverse travel.
4 are each equipped.

A pair of left and right guide rails 5, 5 each having an L-shaped cross section are laid in parallel to both left and right ends of the pallet 2 from the front end to the rear end.

When transporting object B, the floor surface 1 of carrier body 1
A is moved upward to load the transported object B together with the pallet 2 onto the carrier body 1, and before and after transporting the transported object B, the floor surface 1a of the carrier main body 1 is displaced downward to load the transported object B onto the pallet 2. At the same time, each jack up mechanism C, which is installed facing each traveling wheel 3 in order to be released from above the carrier body 1, has a fixed bracket 6 which is attached to the carrier body 1 in a downward direction facing the traveling wheels 3. , a swinging link 8 on which the axle 7 is rotatably supported and whose tip is connected to the tip of the fixed bracket 6, and a hydraulic cylinder 9 suspended from the carrier body 1 and linked to the swinging link 8. When the piston shafts 9a of each hydraulic cylinder 9 are retracted all at once, each swing link 8 swings synchronously in the clockwise direction in the drawing, each fixed bracket 6 moves upward, and the floor surface 1a of the carrier body 1 is moved upward. moves upward and pallet 2 is lifted to the ground.

A cover 10, which is movably mounted on the pallet 2 and has a hood-like shape in the front, is installed over almost the entire length of the carrier body 1, and is mounted movably on the pallet 2 to cover the transported object B. Shutters 10a, 10a for opening and closing the front and rear openings of the cover 10 are attached to the upper ends of the ends so as to be able to be wound and expanded, respectively, and are formed to extend from the left and right lower ends of the front and rear ends of the cover 10, respectively. The cover 10 is attached to the pallet 2 at each lower end edge of each pair of front and rear extension pieces 10b and at both lower end edges 10c of the cover 10.
An appropriate number of pairs are arranged along the front-rear direction so that the cover 10 can slide on the lower pieces 5a of both guide rails 5 of the pallet 2 so as to be able to roll on the lower pieces 5a of both guide rails 5 of the pallet 2. Guide roller 1
1 to 11 are rotatably supported, and a cover bracket 16 is attached to the inner side of each extension piece 10b in a downward direction. The locking recesses 16a, 16a are respectively provided in a front-back symmetrical manner.

Next, we will explain the two pairs of front and rear linking mechanisms D installed on both sides near the front and rear ends of the transport vehicle A to releasably link the carrier body 1 and the cover 10. At both left and right ends near the front and rear ends, there are a pair of guide tubes 20, which are horizontally placed vertically parallel to each other along the vehicle width direction.
20 are arranged in parallel, and each pair of guide tubes 2
0, support rods 21, 21 are horizontally slidably inserted and arranged vertically in parallel.

Each connecting rod 12, which is erected facing each cover bracket 16 and is formed to be extendable and retractable in the vertical direction, has an outer cylinder 12a and an inner cylinder 12a.
The inner cylinder 12b is fitted so as to be slidable up and down.
The tip of each pair of support rods 21 is connected to the outer cylinder 1.
Each outer cylinder 12a is connected to the frame 1b of the carrier body 1 by a pin 2, and is supported by the carrier body 1 through each pair of support rods 21 so as to be horizontally displaceable in the vehicle width direction.
The piston shaft 1 of the first hydraulic cylinder 18 is interposed between each pair of support rods 21 and connected via the piston shaft 1
8a via a pin 23, and further inside the outer cylinder 12a is a second hydraulic cylinder 19 connected to the lower end of this outer cylinder 12a via a pin 30.
are arranged in parallel, and a piston shaft 19a of the second hydraulic cylinder 19 is arranged in parallel in the inner cylinder 12b,
The tip of this piston shaft 19a is connected to the upper end of the inner cylinder 12b via a pin 31 so as to be movable together.
The piston shafts 18a of the pair of first hydraulic cylinders 18 on the front side are synchronously controlled to advance and retreat in opposite directions, and the pair of first hydraulic cylinders 18 on the rear side
The piston shafts 18a of the piston shafts 18a are set to be controlled to move forward and backward in opposite directions in synchronization, and when both piston shafts 18a of the pair of first hydraulic cylinders 18 move forward, the pair of connecting rods 12 move outward. 1 when both piston shafts 18a of the pair of first hydraulic cylinders 18 retreat.
The pair of connecting rods 12 are each displaced inward and retracted within the vehicle width of the carrier body 1, and the interval between the pair of connecting rods 12 is expanded or contracted. Further, the piston shafts 19a of the second hydraulic cylinders 19 in the pair of front connecting rods 12 are controlled to move forward and backward in synchronization, and the pistons of the second hydraulic cylinders 19 in the pair of connecting rods 12 on the rear side are synchronously controlled to move forward and backward. The shafts 19a are set to be controlled to move forward and backward in synchronization.

In the gripping mechanism E provided at the upper end of each connecting rod 12, a holder 13 is attached to the upper end of the inner cylinder 12B and has a recessed upper part near the center.
A pair of gripping members 14, 14 are respectively attached to the pin 1.
5 and 15, and are slidably supported oppositely through the gripping members 14. At the upper ends of both gripping members 14, locking projections 14a and 14a are respectively bulged inwardly and oppositely.
are formed respectively, and both gripping members 14
Protrusions 14b, 14b are formed near the center of the holder, respectively, and protrude inwardly from each other in opposite directions.
Furthermore, a hole 13 penetrating the lower end of the holder 13
A safety pin 17, which is controlled to move forward and backward by an actuating member (not shown), is horizontally slidably inserted into the inside (a) in order to lock and unlock the swinging state of both gripping members 14.

Then, the connecting rod 12 connects to the cover bracket 1.
6 and when the piston shaft 19a of the second hydraulic cylinder 19 is advanced upward with the gripping member 14 and the cover bracket 16 disengaged, the cover bracket 16 inserted between the gripping members 14 Both protrusions 14b are pushed down at the tips of the gripping members 14, and the locking protrusions 14a of the gripping members 14 engage with the locking recesses 16a of the cover bracket 16, and the cover bracket 16 locks the gripping members 14. The connecting rod 12 and cover bracket 16 are held by
Furthermore, when the safety pin 17 is advanced, the connecting rod 12 and the cover bracket 1 are connected.
6 is locked. Further, in a state in which each connecting rod 12 and each cover bracket 16 are connected, the piston shaft 19 of each second hydraulic cylinder 19
When the connecting rods 12 are extended by moving the connecting rods 12 upward to the advancing end, the upper plate 2a of the pallet 2 is inserted between the lower edge 10c of the cover 10 and the floor surface 1a of the carrier body 1, and both guide rails are A gap is formed on the lower plate 5a of 5 for placing each guide roller 11 thereon. Also, with the cover bracket 16 connected to the connecting rod 12, the piston shaft 19a
When the connecting rod 12 is retracted by moving down to the retracted end, both gripping members 14 touch the cover bracket 16.
The cover bracket 16 is swung in the direction of opening.
is detached from between both gripping members 14, and the connecting rod 12
The connection between the holder 13 and the cover bracket 16 is released, and the height of the holder 13 at the upper end of the linkage mechanism D is reduced to a height that allows it to enter into the pallet 2. Note that when the piston shafts 19a of the respective hydraulic cylinders 19 are moved down all at once in a state in which the transported object B and the pallet 2 are not loaded on the carrier body 1, the cover 10 is displaced downward and the cover 10 is moved downward to the floor surface 1a of the carrier body 1. , the gap between the cover 10 and the lower edge 10c can be reduced.

The rear mirror rods 28 each have rear mirrors 27 disposed on both sides of the front and rear driver's cabs 4 attached to their tips, and their base ends are connected to the tips of the upper guide tubes 20 so as to be swingable in the horizontal direction. At the same time, there is a connecting rod 1 near the center.
The tip of a link 29, which is movable in the horizontal direction, is connected to the upper end of the outer cylinder 12a of No. 2, and when the connecting rod 12 is displaced outward, the back mirror rod 28 is horizontally moved outward. By swinging, the rearview mirror 27 can be extended outside the vehicle width of the carrier body 1. On the other hand, when the connecting rod 12 is displaced inward, the rearview mirror rod 28 can be moved horizontally along the longitudinal direction. The back mirror 27 can be stored in the vicinity of the driver's cab 4 before entering the pallet 2.

A pair of front and rear sensors 24, 24 send a signal to disengage the connection between both connecting rods 12 and both cover brackets 16 on the traveling direction side when the carrier main body 1 enters the pallet 2, and also send a signal to both connecting rods on the traveling direction side. 12 inwardly, and the carrier body 1 inside the pallet 2
When exiting, the carrier body is used to send a signal to advance both connecting rods 12 on the side opposite to the exiting direction outward, and a signal to connect both connecting rods 12 on the side opposite to the exiting direction and both cover brackets 16. 1
The cover 10 is installed on the front and rear driver's cabs 4 near the front and rear ends of the carrier body 1, and the vicinity of the end of the carrier body 1 in the direction of travel slightly protrudes into the pallet 2, and the vicinity of the end of the cover 10 in the direction of travel moves onto the pallet 2. Then, in response to the signal from the sensor 24 on the traveling direction side, the piston shafts 19a of both the second hydraulic cylinders 19 on the traveling direction side move downward together with the inner cylinders 12b, thereby connecting both the connecting rods 12 on the traveling direction side and both cover brackets 16. The connection is disengaged, and then the piston shafts 18a of both the first hydraulic cylinders 18 on the traveling direction side are respectively retracted, and both the connecting rods 12 are each retracted into the width of the vehicle. Then, when the carrier body 1 penetrates into the pallet 2 and the cover 10 moves to a position where it covers the entire transported object B on the pallet 2, the above series of operations is performed in reverse order. The two connecting rods 12 on the entry side and the two cover brackets 16 can be reconnected.

On the other hand, when the carrier body 1 is to be moved out of the pallet 2 after the transported object B and the pallet 2 have been placed in the carry-in position, the above series of operations is carried out in forward direction on the side opposite to the exit direction, and both connections on the side opposite to the exit direction are Arm 1
2 from both cover brackets 16 and retracted inward, remove the carrier body 1.
When the cover 10 is withdrawn until the vicinity of the end on the side opposite to the withdrawal direction is placed on the pallet 2 and both connecting rods 12 on the side opposite to the withdrawal direction are exposed to the outside of the pallet 2, the sensor 24 on the side opposite to the withdrawal direction is withdrawn. The piston shaft 1 of both first hydraulic cylinders 18 on the side opposite to the withdrawal direction is activated by the signal.
8a respectively advance and both connecting rods 12 on the side opposite to the withdrawal direction advance outward, and then the piston shafts 1 of both second hydraulic cylinders 19 on the side opposite to the withdrawal direction are moved.
9a moves upward together with the inner cylinder 12b, both connecting rods 12 and both cover brackets 16 are connected, and with each cover bracket 16 connected to each connecting rod 12, the carrier body 1 is moved outside the pallet 2. can be ejected to.

Next, the operation and effects of the embodiment having the above configuration will be explained.

In this example, the carrier main body is formed so as to be able to enter into the pallet 2 in order to transport the object B on the pallet 2, which has a substantially mold-shaped front face and a pair of guide rails 5 laid on the upper surface, together with the pallet 2. A cover 10 that opens downward is installed on top of the pallet 1 to move onto the pallet 2 and cover the transported object B when the carrier body 1 enters the pallet 2.
An appropriate number of guide rollers 11 for rolling on the guide rails 5 are attached to the lower edges of both sides, and the carrier body 1 and the cover 10 are attached to each other.
A pair of front and rear cover brackets 16 are attached to both sides near the front and rear ends of the cover 10.
and a pair of front and rear connecting rods each supported by the carrier body 1 so as to be able to advance to a position directly below the cover bracket 16 and retract within the vehicle width of the carrier body 1, and each of which is formed to be extendable and retractable in the vertical direction. They are releasably linked via 12.

Therefore, as the carrier body 1 moves into the pallet 2, the cover 10 is moved onto the pallet 2 to cover the transported object B with the cover 10, and
The cover 10 can be removed from the pallet 2 as the carrier body 1 moves out from the pallet 2, and the work for covering the transported object B with the cover 10 and the removal of the cover 10 from the pallet 2 are performed. These operations can be carried out simply and safely, making the transportation work more efficient and labor-saving, as well as eliminating the problem of the cover obstructing the work of loading and unloading the objects B onto the pallet 2.

In particular, the distance between each pair of connecting rods 12 at the front and rear is expanded or contracted so that the distance between each pair of connecting rods 12 when expanded is L1.
2 and each pair of cover brackets 16 are connected to each other, the distance between each pair of cover brackets 16 is expanded, and the width of the cover 10 is changed, and both connecting rods 12 are displaced within the vehicle width. The width of the cover 10 can be set to almost match the width of the pallet 2, and both sides of the cover 10 This has the effect of eliminating the dead space formed between the pallet 2 and the side edge of the pallet 2, and expanding the effective space for loading the goods B on the pallet 2.

Furthermore, since the cover 10 is permanently placed on the carrier body 1 and not on the pallet 2, the number of covers 10 installed can be greatly reduced, resulting in cost savings.

Further, in this example, the rearview mirror 27 is mounted so that it can move in and out of the vehicle width and can extend outside the vehicle width when in use, so that safety during transportation of the carrier body 1 can be improved.

If the cover 10 is not required, the carrier body 1 can be used alone by leaving the cover 10 on the pallet 2.

(Effects of the Invention) Since the present invention is configured as described above, it is possible to easily and safely carry out the work of covering the transported object and the work of escaping it, thereby streamlining the transport work and saving labor. This eliminates the problem of the cover obstructing the loading and unloading of transported objects, and furthermore, it has the effect of expanding the effective space for loading and unloading transported objects onto pallets.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is an overall side view, FIG. 2 is a plan view, FIG. 3 is a view taken along the line X--X in FIG. 1, and FIG. FIG. 5 is a plan view of the main parts, FIG. 6 is a longitudinal sectional view of the gripping mechanism, and FIG. 7 is a sectional view taken along the line Y--Y in FIG. 6. 1...Carrier body, 2...Pallet, 10...Cover, 12...Connecting rod, 16...Cover bracket, B...Carried object.

Claims (1)

[Claims] 1. On a carrier body that is formed so as to be able to enter into the pallet in order to transport objects on a pallet having a substantially shaped front face and a pair of guide rails laid on the upper surface, the carrier body is formed so as to be able to enter into the pallet. A downward-opening cover is installed that moves onto the pallet to cover the transported object when the object enters the pallet, and a suitable number of objects are installed on the lower edges of both sides of this cover to allow the object to roll on the guide rail. The carrier body and the cover are connected to a pair of front and rear cover brackets respectively attached to both sides near the front and rear ends of the cover, and a pair of front and rear cover brackets are respectively attached to the carrier body. via a pair of front and rear connecting rods that are supported so as to be able to advance to a position directly below the cover bracket and retract within the vehicle width of the carrier body, and are each formed to be extendable and retractable in the vertical direction;
A transportation vehicle characterized by being releasably linked.