JPH054445Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a large tire transport vehicle used for driving large tires used in aircraft and large vehicles.

Conventional technology Large tires used on aircraft and large vehicles are quite heavy and require a lot of labor to transport and unload. A large tire transport vehicle shown in Japanese Patent No. 62-56299 has been proposed.

This parallel link mechanism is installed on the rear end of a cart that is self-propelled by an engine or motor and rotates horizontally around a support and swings vertically by a drive mechanism. A hanger arm is horizontally rotatably connected to the swinging end of the hanger arm, and a luggage hanger is suspended from the end of the hanger arm to scoop up a large tire onto a pair of holding rollers and hold it vertically. It is something.

Problems that the invention aims to solve: A single large tire is scooped vertically onto a pair of holding rollers on a luggage hanger, and the luggage hanger can be loaded onto the trolley. The loading capacity of large tires is low and transportation efficiency cannot be said to be good.

Therefore, with the present invention, large tires can be stably loaded vertically along the sides of the cart, increasing the loading capacity, and the loading and unloading of large tires onto the sides of the cart can be improved. Unloading work can be done easily, and when large tires are loaded vertically on one side of the trolley, the other side of the trolley has a parallel link mechanism and a hanger arm that connects the cargo in series. To provide a large tire transport vehicle capable of stably placing a hanger without floating and ensuring running stability by balancing the load on the sides of the vehicle.

Measures to solve the problem: A deck capable of loading large tires is formed at the rear of a self-propelled cart with a driver's seat on the front side, and a pair of upper and lower columns are rotatably supported on this deck. a parallel link mechanism which pivotally supports a link, and an arm support shaft is connected with a pin between the free ends of these links so as to be swingable horizontally and vertically about the support; and the parallel link mechanism. A drive mechanism is arranged across the support column and the upper link to swing the parallel link mechanism up and down, a hanger arm is connected to the arm support shaft of the parallel link mechanism so as to be rotatable in the horizontal direction, and an inverted U A lower beam is provided across the lower end of the letter-shaped frame, and a pair of holding rollers are disposed on one side of the lower beam to protrude substantially horizontally in parallel, and are detachably suspended from the free end of the hanger arm. , a large tire transport vehicle equipped with a luggage hanger for vertically holding a large tire by straddling the pair of holding rollers, the rear end of which is rotatable so as to be able to touch the ground on both sides of the trolley; A tray-shaped tire mounting section is horizontally supported, and a large tire is vertically mounted along the side of the trolley.A tray-shaped tire mounting section is provided that extends to the side, and the back of the large tire is supported on this tire mounting section. A back crest is provided, and
The tire rest and the upper side of the back crest are engaged with the lower beam and the upper end of the frame of the luggage hanger by lowering the luggage hanger onto the tire rest, so that the luggage hanger is lowered onto the tire rest. A locating section is provided to be placed on the mounting section.

Function By rotating the parallel link mechanism and the hanger arm in the horizontal direction, the parallel link mechanism and the hanger arm extend from above the deck of the cart. I lowered it to a nearby location, pushed the luggage hanger towards the large tire that was placed vertically, and
By applying a pair of holding rollers to the circumferential side of a large tire and lifting the luggage hanger, the large tire can be scooped up while straddling the pair of holding rollers.

Therefore, by horizontally rotating the hanger arm and the parallel link mechanism again onto the deck, large tires can be easily loaded onto the deck together with the luggage hanger.

When the truck is driven to the destination and the large tires are to be unloaded, the aforementioned operations can be reversed to easily unload the large tires.

When loading a large tire onto the tire mounting section on the side of the truck, rotate the tire mounting section from a nearly horizontal position so that the rear end touches the ground, and then roll the large tire on the road surface. After placing the tire on the rear end, the large tire can be loaded vertically onto the tire rest without any effort by rotating and returning the tire rest to its original substantially horizontal state. .

In addition, when loading a luggage hanger onto this tire platform, the parallel link mechanism and the hanger arm are horizontally rotated to bring the luggage hanger above the tire platform. By lowering the luggage hanger onto the tire resting part, the lower beam of the luggage hanger and the locating part of the upper end of the frame engage with the locating part of the tire resting part and the back crest, and the luggage hanger is lowered onto the tire resting part. It can be stably placed on the mounting section.

Example Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

In Figures 1 to 7, 1 is the front wheel, rear wheel 1a, 1b
A trolley that is self-propelled by an engine or motor, and has a driver's seat S formed on the front side, and
A deck 2 is formed behind the driver's seat S with sufficient space to load large tires W used in aircraft and the like.

In this embodiment, the ground height of the substantially rear half 2a of the deck 2 is lowered, and the deck 2 is formed into a multi-stage shape.
The large tires W are vertically stacked on the truck a along with a luggage hanger to be described later, and the lower side of the large tires W can be prevented from shifting forward by the deck stepped portion when the truck is braked.

Reference numeral 3 denotes a parallel link mechanism disposed on the rear end of the rear half 2a of the deck, which includes a support 5 that is rotatable by being supported by a bearing 4 provided at the center of the rear end of the rear half 2a of the deck; It consists of a pair of links 6 and 7 that are pivotally supported at the top and bottom, and an arm support shaft 8 that is connected with a pin between the free ends of these links 6 and 7, and the arm support shaft 8 is pivoted in the horizontal and vertical directions around the support 5. It is swingable.

Reference numeral 10 indicates a drive mechanism for vertically swinging the parallel link mechanism 3, and a bracket 11 provided at the bottom of the support column 5.
Hydraulic cylinder 1 with cylinder body 12a pivotally supported on
2, an arm 13 with one end connected to the upper part of the support column 5 with a pin and an operating rod 12b of a hydraulic cylinder 12 connected to the middle part and supported by the hydraulic cylinder 12, and a free end of the arm 13. It consists of a strut-type shock absorber 14 connected by a pin between the end and the end of the upper link 6 on the side where the arm support shaft 7 is connected. Upper link 6 via buffer 14
This causes the parallel link mechanism 3 to swing up and down around the pillar 5.

Reference numeral 9 denotes a hanger arm that is horizontally rotatably attached to the arm support shaft 8 of the parallel link mechanism 3, and a luggage hanger 17 is rotatably suspended from the free end of the hanger arm.

The luggage hanger 17 is removably suspended from the hanger arm 9 via a hook pin 15, and is horizontally rotatable about the hook pin 15. The luggage hanger 17 includes an inverted U-shaped frame 18, a lower beam 18a that straddles the lower end of the frame 18, and a pair of rotatably protruding parts substantially horizontally parallel to one side at both ends of the lower beam 18a. Holding rollers 19 are provided, and a heavy large tire W can be scooped up and placed on these holding rollers 19.

Reference numeral 20 denotes a height adjustment mechanism disposed at the upper end of the frame 18 of the luggage hanger 17, which is inclined diagonally upward on the side of the side where the holding roller 19 is protruded from the upper end of the frame 18. A pair of inner cylinders 2
2, 22, and a pair of outer cylinders 23, 23 which are projecting obliquely downward from the lower surface of the bracket 16 having the hook pin 15 on the upper surface thereof, and which are slidably fitted onto the inner cylinders 22, 22. The frame 1 is stretched between each of these inner cylinders 22 and outer cylinders 23.
8. A balancer spring 25 that bears the load of the lower beam 18a and the holding roller 19, and a balancer spring 25 disposed between the inner and outer cylinders 22, 23 and 22, 23 on both sides, straddling the bracket 16 and the upper end of the frame 18. A screw mechanism 24 is provided.

The screw mechanism 24 includes a screw shaft 24b that is rotatably supported on the upper end of the frame 18 and has a handle 24a at the lower end, and an inner cylinder 24d that has a nut member 24c screwed onto the screw shaft 24b inside the tip. and,
A screw shaft 24b is fixed to the upper end of the frame 18.
an outer cylinder 24e that encloses the inner cylinder 24d and is slidably fitted into the inner cylinder 24d, and a cylindrical protective cover 24f that is fixed to the inner cylinder 24d and covers the fitting portion of the inner and outer cylinders 24d and 24e. It is equipped with and,
This screw mechanism 24 loosely fits the upper end of the inner cylinder 24d onto a support shaft 24g protruding from the bracket 16,
They are swingably connected by a pin 24h.

Thereby, by rotating the handle 24a and moving the nut member 24c along the screw shaft 24b, the inner and outer cylinders 22 and 23 are relatively expanded and contracted, and the large tires W and _W1 are Adjusting the height of the luggage hanger 17 according to the outer diameter dimension, that is,
The height from the lower beam 18a to the bracket 16 can be adjusted.

On the other hand, at approximately the center of both sides of the truck 1, a large tire W is mounted vertically along the side of the truck 1, with the rear end pivoted so as to be able to touch the ground and pivoted approximately horizontally. A tray-shaped tire mounting section 28 on which the tires are placed is provided so as to protrude laterally.

Specifically, on the side of the truck 1, a support shaft 28a is arranged to protrude horizontally toward the side, and the tire mounting portion 28 is rotatably mounted on a bracket 28b fixed to the support shaft 28a. It is pivoted on.

This tire mounting section 28 has one side thereof and the trolley 1.
It is rotated by a hydraulic cylinder 12 provided straddling the side of the cylinder.

Further, the rear end portion of the tire mounting portion 28 is formed to be inclined upward, so that the large tire W is rolled onto this rear end portion when it is brought into contact with the ground.

An inverted L-shaped backrest 26 is joined to the back of the side edge of the tire mounting part 28 near the truck 1, so that the back of the large tire W can be leaned against this backrest 26.

When the load hanger 17 is lowered onto the tire placement portion 28, the upper portion of the tire placement portion 28 and the backrest 26, the lower beam 18a of the luggage hanger 17, and the upper end portion of the frame 18 fall into contact with each other. Additionally, a locate section 29 is provided for positioning the luggage hanger 17 on the tire mounting section 28.

In this embodiment, as the locating part 29, hooks 30 are provided upwardly at the front and rear edges of the tire mounting part 28 near the side of the cart, and at the end of the horizontal arm 26a of the backrest 26. Brackets 31 are protruded from both sides of the back of the lower beam 18a of the hanger 17 and at the center of the back of the upper end of the frame 18, respectively, and are inserted into the hooks 30 from above.

In the figure, 27 is the bracket 16 of the luggage hanger 17.
A pair of holders 35 are provided on both sides of the cart 1 to prevent the large tires W placed on the holding rollers 19, 19 from falling, and are provided on the lower surface side and hooked to the front side of the large tires W placed on the holding rollers 19, 19. This is an outrigger that is grounded.

According to the above embodiment structure, the luggage hanger 17
When the large tire W held in the carriage 1 is transported to the destination by traveling on the truck 1, and is lowered from the rear half 2a of the deck and attached to the axle of an aircraft, for example, when the hydraulic cylinder 12 is slightly extended, The driving force is transmitted from the upper link 6 to the lower link 7 via the arm support shaft 8, and simultaneously swings the upper and lower links 6 and 7 upward to align the arm support shaft 8 vertically and parallel to the support column 5. Move upward.

As a result, the luggage hanger 17 suspended from the hanger arm 9 is lifted together with the large tire W from the rear half 2a of the deck, so that the parallel link mechanism 3 is manually rotated horizontally about the support 5, and the hanger arm 9 can be similarly rotated in the horizontal direction about the arm support shaft 8, the luggage hanger 17 can be extended and moved to a predetermined position such as the rear of the deck 2 or the right and left sides.

Therefore, the parallel link mechanism 3 and the hanger arm 9 can be rotated in the horizontal direction, and the luggage hanger 17 can be rotated in the horizontal direction.
The large tire W is brought to the side of the axle end of the aircraft (not shown) by rotating in the horizontal direction around the hook pin 15 of By adjusting the center so that it is at the height of the axle end and pushing the luggage hanger 17 together with the large tire W toward the axle end, the large tire W can be easily moved to the axle end while being suspended. It can be fitted and installed.

Next, when removing the old large tire W from the axle, taking it into the luggage hanger 17, and loading it on the rear half 2a of the deck, do the same as described above on the luggage hanger 1.
7 to the side of the large tire W mounted on the axle, push the luggage hanger 17 toward the large tire W, and insert the pair of holding rollers 19, 19 under the large tire W. The luggage hanger 17 is moved slightly upward by the operation of the hydraulic cylinder 12, and these holding rollers 19, 19 are attached to the large tire W.
contact the bottom of the

Then, by unfastening the large tire W from the axle and moving the large tire W along with the luggage hanger 17 in a direction away from the axle, the large tire W can be scooped onto these holding rollers 19, 19, so that the large tire W can be scooped up onto these holding rollers 19, 19 later. All you have to do is reverse the process of installing the large tire W mentioned above, and fold the parallel link mechanism 3, hanger arm 9, and luggage hanger 17 compactly onto the rear half 2a of the deck using their connection points as nodes, and then attach the luggage. The hanger 9 can be stored in a state substantially parallel to the parallel link mechanism 3. (See Figures 1 and 2).

Similarly, when a large tire W stored vertically on the floor of a hangar or the like is taken into the luggage hanger 17 and loaded onto the rear half 2a of the deck, the luggage hanger 17 is lowered to near the floor. Similarly to the above, the large tire W stored vertically is brought to the side and pushed toward the large tire W, and the pair of holding rollers 19, 19 are applied to the circumferential side of the large tire W. If the hanger 17 is moved upward by the operation of the hydraulic cylinder 12, the large tire W can be scooped onto these holding rollers 19, 19. Parallel link mechanism 3 with horizontal rotation operation and hydraulic cylinder 12
By vertically swinging the large tires W together with the luggage hanger 17 can be loaded onto the rear half 2a of the deck.

On the other hand, the luggage hanger 17 is placed on the rear half 2a of the deck.
When the large tires W held and loaded are lowered onto the floor of a hangar or the like and stored vertically, the above-described tire loading operation may be reversed.

Next, when placing the large tire W on the tire placement portions 28 that extend laterally on both sides of the trolley 1,
The hydraulic cylinder 21 is actuated to rotate the tire mounting portion 28 downward from the horizontal position, and the rear end portion is brought into contact with the ground as shown by the chain line in FIG. Then, the large tire W is rolled on the road surface to ride on the rear end of the tire mounting section 28, and in this state, the hydraulic cylinder 21 is operated to rotate the tire mounting section 28 to its original horizontal state. By moving and returning the large tire W to the tire mounting portion 28, the large tire W can be easily stacked vertically on the tire mounting portion 28 without any effort.

When unloading the large tire W from the tire mounting portion 28, the above-mentioned operation may be performed.

Therefore, the large tire W is placed on the tire mounting portion 28.
When loading and unloading, the luggage hanger 17
You can easily perform the work without using any labor.

On the other hand, when transporting large tires W, the large tires W may be loaded only on one of the tire mounting sections 28 while traveling, but in this case, the luggage hanger 17
If the truck is folded and loaded onto the rear half 2a of the deck, the load balance between the left and right sides of the truck 1 will be disrupted, resulting in a lack of running stability.

Therefore, in such a case, the parallel link mechanism 3 and the hanger arm 9 are horizontally rotated to bring the luggage hanger 17 above the other tire mounting section 28, and the parallel link mechanism 3 and the hanger arm 9 are rotated horizontally.
As shown in FIG. 3, the luggage hanger 17 is lowered onto this tire mounting portion 28, and a load is also applied to the other tire mounting portion 28 to balance the load on the left and right sides of the trolley 1. Bye.

At this time, the back side of the luggage hanger 17 (the surface opposite to the side on which the holding roller 19 is protruded) faces the trolley 1 side, and the luggage hanger 17 is placed on the tire mounting section 2.
8, the bracket 31 protruding from the upper end of the frame 18 and the back of the lower beam 18a will
Since it can be supported at the top and bottom by falling into engagement with the backrest 26 and the hook 30 of the tire mounting section 28, the movement of the baggage hanger 17 in the front-back and left-right directions can be restrained without using any special binding means. , the luggage hanger 17 can be stably placed on the tire mounting portion 28, and the luggage hanger 17 will not move loosely while driving.

Effects of the invention As described above, according to the invention, since the tray-shaped tire mounting portions are provided on both sides of the truck and protrude laterally, it is possible to load large tires together with the luggage hangers at the rear of the deck. Of course, large tires can also be stacked vertically on these tire mounting sections, so a plurality of large tires can be transported at once, increasing the transporting capacity.

Moreover, this tire rest can be rotated from a nearly horizontal position to bring the rear end into contact with the ground, so large tires can be rolled onto this tire rest or loaded onto the tire rest. It is possible to load and unload large tires without requiring much effort.

Furthermore, since the tire resting part and the upper part of the back crest, and the lower beam and the upper end of the frame of the luggage hanger are provided with cage parts that engage with each other when the luggage hanger is lowered onto the tire resting part, When a large tire is loaded on one tire mounting section on the side of the cart, a parallel link mechanism and a luggage hanger connected in series to the hanger arm are placed on the other tire mounting section and engaged by the locating section. ,
If the hanger is fixed, the load hanger can be stably placed without any movement, and the load can be balanced on the sides of the trolley, thus ensuring running stability and carrying work.

[Brief explanation of the drawing]

Figure 1 is a side view showing one embodiment of the present invention;
The figure is a plan view of the same, Figure 3 is a side view showing a state in which the luggage hanger is placed on the tire resting part, Figure 4 is a partially cutaway side view of the luggage hanger, and Figures 5 and 6 are the hooks and FIG. 7 is a sectional view showing the engagement state with the bracket, and FIG. 7 is a sectional view of the height adjustment mechanism. 1...Dolly, 2...Deck, 3...Parallel link mechanism, 5...Strut, 6...Upper link, 7...
Lower link, 8... Arm support shaft, 9... Hanger arm, 10... Drive mechanism, 17... Luggage hanger, 18... Frame, 18a... Lower beam, 19... Holding roller, 26... Back crest , 28...Tire placement part, 29...Locate part, W...Large tire.

Claims (1)

[Scope of utility model registration request] A deck capable of loading large tires is formed at the rear of a self-propelled trolley that has a driver's seat on the front side, and a pair of links are pivotally supported at the top and bottom of a column rotatably supported on this deck. A parallel link mechanism in which an arm support shaft is connected with a pin between the free ends of these links so that it can swing freely in the horizontal and vertical directions around the column, and the column and upper link of the parallel link mechanism. A drive mechanism that swings the parallel link mechanism up and down, a hanger arm that is horizontally rotatable and connected to the arm support shaft of the parallel link mechanism, and a lower beam at the lower end of the inverted U-shaped frame. A pair of holding rollers are disposed astride the lower beam, and a pair of holding rollers are disposed to protrude substantially horizontally in parallel to one side of the lower beam. In a large tire transport vehicle equipped with a luggage hanger that straddles and holds large tires in a vertical position, the rear ends of the cart are rotatably and substantially horizontally supported on both sides of the cart so as to be able to touch the ground. A tray-shaped tire mounting section for vertically mounting tires along the side of the trolley is provided, extending laterally, and a backrest is provided on the tire mounting section to support the back of the large tire, and
The tire rest and the upper side of the back crest are engaged with the lower beam and the upper end of the frame of the luggage hanger by lowering the luggage hanger onto the tire rest, so that the luggage hanger is lowered onto the tire rest. A large tire transport vehicle characterized by being provided with a locating part that is fixedly placed on a locating part.