JPH0555350B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a vehicle conveying device used for painting the bottom surface of a vehicle such as an automobile.

2. Description of the Related Art In general, on an automobile manufacturing line, the bottom surface of an assembled automobile is sometimes further coated with anti-rust coating as a special specification. This is to prevent the bottom surface of the car body from being corroded by anti-freeze agents etc. sprayed on the road surface during the winter in, for example, cold regions. Conventionally, when applying this kind of anti-rust coating, a conveyor was placed on both sides of the opening of the paint pit in the factory, and a large number of slats were installed on the endless drive chain of this conveyor to place the wheels of the car. They were attached directly at predetermined intervals and inwardly protruding.

Problems to be Solved by the Invention However, according to such a conventional method, the slat mounting portion of the endless drive chain must be strong enough to support the load of the automobile, and the slats, which are subject to such a large load, must be strong enough to support the load of the automobile. The mounting parts are easily damaged, and the conveyor is very large due to the rotation of the drive chain with a large number of slats, which not only makes manufacturing complicated and expensive, but also requires a large installation space. There was a problem that required .

It is an object of the present invention to solve the above-mentioned problems of the prior art, to provide a vehicle carrier that has an extremely simple structure, can be manufactured easily and inexpensively, and that allows the vehicle carrier to handle tasks larger than the bottom surface of the vehicle body of the vehicle to be transported. Because of the space provided, work such as painting the underside of the vehicle body can be carried out very easily and smoothly, and the height of the vehicle transport platform itself is extremely low.
Therefore, the height of the transport conveyor including the vehicle transport platform can be lowered, and the height of the painting equipment etc. can also be lowered, eliminating the need for a large installation space and making effective use of space within the factory. It is an object of the present invention to provide a vehicle transport device that is capable of very smoothly loading and unloading vehicles onto a vehicle transport platform, and that is capable of transporting vehicles extremely efficiently and reliably.

Means for Solving the Problems In order to achieve the above object, the present invention has left and right side frame members that can be freely loaded and unloaded onto conveyor transport sections that are arranged parallel to each other at a required interval. and a substantially rectangular frame larger than the bottom surface of the vehicle body of the conveyed vehicle, and a pair of wheels protruding inwardly at a predetermined interval in the front and rear at the intermediate portions of the respective lengths of the left and right side frame members of this frame. A vehicle transport platform which serves as a receiving part and has a working space larger than the bottom surface of the vehicle body of the vehicle to be transported inside the frame body, a vehicle loading mechanism for loading a vehicle onto the vehicle transport platform, and a vehicle transport platform. and a vehicle unloading mechanism for unloading the vehicle from the platform, and the vehicle loading mechanism is disposed on at least one of the left and right sides of the vehicle loading position of the conveyor, and the vehicle loading mechanism is disposed on at least one side of the left and right sides of the vehicle loading position of the conveyor. It is equipped with a sliding body that can horizontally reciprocate from the platform to a standby position on the side thereof, and a reciprocating drive means for the sliding body. Wheel passing overhangs to be fitted between the wheels and between the rear wheel receiver and the rear frame member are provided, and the vehicle unloading mechanism is installed on both the left and right sides of the vehicle unloading position of the conveyor. a sliding body disposed on at least one side of the conveyor and capable of horizontally reciprocating from a vehicle conveyance platform on the conveyor to a standby position on the side thereof; and means for reciprocating the sliding body. A wheel passage overhang is provided at the tip of the sliding body to be fitted between the front and rear wheel receivers of the vehicle carrier and between the front wheel receiver and the front frame member. The main focus is on vehicle transport equipment.

Embodiments Next, embodiments of the present invention will be described based on the drawings.

In this specification, front and back and left and right are based on the conveyance direction of the conveyor, the front refers to the conveyance direction of the conveyor, that is, the upper side in Figure 4, the rear refers to the lower side, and left and right refers to the forward direction. do.

In FIGS. 1 to 5 showing a first embodiment of the present invention, a pit 3 is provided at a predetermined location on a floor 1 of an automobile production factory for applying a rust preventive agent to the bottom surface of an assembled automobile 2. , conveyors 4 are provided on both the left and right sides of the opening of the pit 3. The conveyor 4 includes an endless drive chain 5, 5 with a pair of left and right rollers 6 supported by a required number of horizontal arms 7. The upper and lower horizontal straight portions 5a, 5a of each endless drive chain 5 are supported by guide rails 8, 8.

A water tank 9 is provided at the bottom of the pit 3 to absorb rust preventive agent that falls into the pit 3 during painting.

The vehicle 2 to be transported is placed on a vehicle transport platform 10 and transported by a transport conveyor 4.

Here, as shown in FIG. 2, the vehicle conveyance platform 10 includes left and right side frame members 12, which can be freely loaded and unloaded onto rollers 6, 6 of a pair of left and right endless drive chains 5, 5 of the conveyor 4. 13 and front and rear side frame members 1
4 and 15 and which is larger than the bottom surface of the vehicle body of the vehicle to be transported 2, and a frame member 11 on the left and right sides of this frame body 11, with a predetermined interval spaced in the middle of the length of each of the left and right side frame members 12 and 13. It consists of a pair of wheel receivers 16 and 17 provided inwardly protruding, and a working space 18 larger than the bottom surface of the vehicle body 2 to be transported is formed inside the frame 11.

At the starting end of the painting pit 3, as shown in FIG. A vehicle lowering mechanism 30 for lowering the vehicle 2 is disposed.

The vehicle loading mechanism 20 is disposed on both the left and right sides of the vehicle loading position of the conveyor 4 at the starting end of the pit 3, and horizontally extends from the vehicle conveyor platform 10 on the conveyor 4 to the standby position on the side thereof. sliding bodies 21, 21 that can reciprocate;
21 reciprocating hydraulic cylinders 22, 22. At the tip of each sliding body 21, between the front and rear wheel receivers 16 and 17 of the vehicle carrier 10,
and a wheel passage overhang 2 to be fitted between the rear wheel receiver 17 and the rear frame member 15.
3 and 24 are provided.

The front and rear wheel receivers 16 and 17 each have a U-shape when viewed from above, and in this embodiment,
It has a thickness thinner than that of the frame members 12 and 13, and is attached to the upper surfaces of the left and right side frame members 12 and 13 in an upwardly projecting manner, and these wheel receiving portions 16 and 17 are provided with tensioners for the passage of wheels. Exit part 23,2
When the wheels 4 are fitted together, the upper surfaces of the wheel receivers 16 and 17 and the upper surfaces of the projecting portions 23 and 24 are substantially at the same level.

On the other hand, the vehicle unloading mechanism 30 is disposed on both the left and right sides of the vehicle unloading position of the conveyor 4, and is horizontally reciprocated between the vehicle conveyance platform 10 on the conveyor 4 and a standby position on the side thereof. possible sliding body 3
1 and 31, and a fluid pressure cylinder 32 for reciprocating the sliding bodies 31 and 31. At the tip of each sliding body 32, both front and rear wheel receivers 1 of the vehicle conveyance platform 10 are provided.
Wheel passing overhangs 33 and 34 are provided to be fitted between the wheels 6 and 17 and between the front wheel receiver 16 and the front frame member 14, respectively. Note that, similarly to the case of the vehicle loading mechanism 20, when the wheel passing overhangs 33 and 34 are fitted in front and behind the U-shaped wheel receivers 16 and 17 when viewed from above, the wheel receivers 16 and 17 The upper surface and the overhanging part 33,
It is made to be at almost the same level as the upper surface of 34.

In the above, when applying a rust preventive agent as a special specification to the bottom of the car body of the car 2 that has been assembled after the production line at the car production factory has finished,
As shown in FIG. 5, the vehicle transport platform 10 is placed on the transport conveyor 4 at the starting end of the coating pit 3, and the piston rods 25, 25 of the hydraulic cylinders 22, 22 of the vehicle loading mechanism 20 are placed on the transport conveyor 4. The sliding bodies 21, 21 are made to protrude from the vehicle carrier 10.
The wheel passage overhangs 23 and 24 at their tips are moved between the front and rear wheel receivers 16 and 17 of the vehicle carrier 10 and between the rear frame member 15 and the rear wheels. It is inserted between the receiving part 17. In this state, the engine of the automobile 2 is operated to move the automobile 2 forward, and the four wheels are moved from the rear end of the vehicle carrier 10 to the wheel receivers 16 and 1.
Place on top of 6, 17, 17. Then, stop the car 2 and stop the engine.

Although the vehicle carrier 10 is stopped when the automobile 2 is loaded in this manner, the left and right side frame members 12 and 13 of the frame body 11 are connected to the endless drive chains 5 and 5.
is placed on a large number of free rollers 6,
Since the roller 6 idles, the endless drive chain 5,
5 can be left rotating.

Next, the piston rods 25, 25 are retracted by the operation of the fluid pressure cylinders 22, 22, and the sliders 21, 21 are moved to the standby positions on both the left and right sides. Then, the vehicle carrier 10 and the automobile 2 mounted thereon move forward due to the rotation of the endless drive chains 5, 5. Car 2 on vehicle carrier 10
While passing above the pit 3 at a constant speed, a rust preventive agent is applied to the bottom surface of the car body of the automobile 2 by a painting robot installed in the pit 3 or by hand.

After applying the rust preventive agent, the sliding bodies 31, 31 of the vehicle unloading mechanism 30 are moved to the left and right edges of the vehicle transport platform 10 that has reached the end of the pit 3, and their tips are Wheel passage overhang 33, 3
4 to the front and rear wheel receivers 16, 17 of the vehicle carrier 10.
Between the members and the front frame member 14 and the front wheel receiver 1
Insert between 6 and 6. In this state, the engine of the automobile 2 is operated to move the automobile 2 forward and lower it from the vehicle carrier 10.
After use, the vehicle carrier 10 is returned from the end of the painting pit 3 to the start of the pit 3 by appropriate means for reuse.

In addition, if the above-mentioned endless drive chain 5, 5 with rollers 6 is used as the conveyor 4,
It is preferable that there is no need to stop driving the chains 5, 5 during loading and unloading of the automobile 2, but the invention is not limited to this, and other conveyors such as belt conveyors can also be used.

6 to 8 show another embodiment of the present invention. In this embodiment, as shown in FIG. 6, a storage line 41 equipped with a conveyor 40 for storing vehicle carriers 10 carrying vehicles 2 to be painted, a coating pit 3 and a transport conveyor 4 are installed. A drying line 42 and a drying line 43 including a drying chamber 44 and a conveyor 45 passing through the drying chamber 44 are arranged in a zigzag manner via first and second transfer conveyors 46 and 47, and are arranged in a zigzag manner. 2, the rust-proofing coating is applied continuously to the bottom of the vehicle body.

A vehicle loading mechanism 20 similar to that of the first embodiment is arranged at the starting end of the accumulation line 41, and a vehicle unloading mechanism 30 is arranged at the terminal end of a short paint-fitting vehicle accumulation line 48 extending from the drying line 43. It is located in the department.

FIGS. 7 and 8 show details of the portion where the vehicles to be painted 2 are transferred from the accumulation line 41 to the painting line 42.

In the same figure, a required number of drive rollers 49 are installed at the terminal ends of both the left and right endless drive chains 5, 5 of the transport conveyor 40 of the accumulation line 41 on the extension line of these chains.
are arranged in two rows on the left and right at required intervals. Each row of drive rollers 49 is attached to a pair of left and right frames 50, 50, respectively.

Note that illustration of driving means for these driving rollers 49 is omitted. On the other hand, at the starting end of the endless drive chains 5, 5 of the conveyor 4 of the painting line 42, drive rollers 49 are arranged in two rows at a predetermined interval on the extension line of these chains, as in the above case. There is. The first transfer conveyor 46 is arranged at right angles to the transfer conveyor 40 of the accumulation line 41 and the transfer conveyor 4 of the coating line 42, and a pair of endless drive chains 51, 51 in front and rear of the first transfer conveyor 46 are arranged. is located between the drive rollers 49, 49 and the hydraulic cylinders 52, 52.
It can be raised and lowered by the operation of the

These endless drive chains 51,
Recesses 53, 53 are provided for letting the material 51 escape.

In the above, the vehicle conveyor platform 1 on which the automobile 2 is loaded is placed at the terminal end of the conveyor 40 of the accumulation line 41.
0 arrives, the hydraulic cylinders 52, 52 are actuated to raise both the front and rear endless drive chains 51, 51 of the first transfer conveyor 46, and move them to the transport conveyor 40 and the drive rollers 49, 51 on the extension line thereof. 49 to protrude upward from the upper end. As a result, the vehicle transfer platform 10 is now connected to the endless drive chain 5.
1 and 51 to the right, and reaches the starting end of the conveyor 4 of the coating line 42. Therefore, the endless drive chains 51, 51 of the first transfer conveyor 46 are lowered by the operation of the fluid pressure cylinders 52, 52, and are recessed below the upper ends of the transport conveyor 4 and the drive rollers 49, 49 on the extension line thereof. . As a result, the vehicle conveyor 10 is conveyed by the conveyor 4 of the painting line 42,
While moving above the painting pit 3, the loading vehicle 2
Apply rust preventive to the bottom of the car body. The automobile 2 after being coated with the anti-rust agent is transferred from the terminal end of the transport conveyor 4 to the start end of the transport conveyor 45 of the drying line 43 via the second transfer conveyor 47 while being placed on the vehicle transport platform 10. .

Note that the transfer mechanism by the second transfer conveyor 47 is exactly the same as that of the first transfer conveyor 46, so the explanation thereof will be omitted.

Next, the vehicle conveyor 10 transferred onto the starting end of the conveyor 45 of the drying line 43 is moved forward by the drive of the conveyor 45, and while passing through the inside of the drying chamber 44, the loaded vehicle 2 is rust-prevented. The area where the agent is applied is dried, and the final accumulation line 4
Reach 8. The vehicle loading mechanism 20 disposed at the starting end of the first accumulation line 41 and the vehicle unloading mechanism 30 disposed at the terminal end of the last accumulation line 48 have the same structure as in the first embodiment. Therefore, their explanations are omitted here.

In addition, in each of the above embodiments, the vehicle carrier 10
The shape and attachment means of the wheel receivers 16, 17 attached to the left and right side frame members 12, 13 are not limited to those shown in the drawings, and may be any other appropriate shape. In order to stably stop the vehicle 2 such as a car on the conveyor platform 10, the wheel receivers 16 and 17 are provided with recesses or holes into which the lower ends of the wheels are fitted,
Alternatively, it is preferable to provide a stopping protrusion having an appropriate height.

Further, although the vehicle loading mechanism 20 and the vehicle unloading mechanism 30 are arranged on both sides of the conveyor 4, they may be arranged on one side of the conveyor 4.

In that case, the wheel passing projections 23 , 24 , 33 , 34 provided on the sliding bodies 21 , 31 extend from the sliding bodies 21 , 31 on one side of the conveyor 4 so that the wheels on both the left and right sides of the vehicle conveyance platform 10 It is fitted between the receiving parts 16 and 17 and between the front wheel receiving part 16 and the front frame member 14 or between the rear wheel receiving part 17 and the rear frame member 15.

Furthermore, in each of the above embodiments, a case has been described in which the rust preventive agent is applied to the bottom surface of the car body of the car 2 using the vehicle conveyance device of the present invention. It is similarly applicable to cases where

Effects of the Invention As described above, the vehicle transfer device according to the present invention includes a vehicle transfer platform, a vehicle loading mechanism for loading a vehicle onto the vehicle transfer platform, and a vehicle unloading mechanism for unloading the vehicle from the vehicle transfer platform. Among these, the vehicle conveyance platform has left and right side frame members that can be freely loaded and unloaded onto conveyor conveyance sections that are arranged parallel to each other at a required interval. The vehicle transport platform consists of a substantially rectangular frame larger than the bottom surface of the vehicle to be transported, and a pair of inwardly protruding wheel receivers provided on the left and right side frame members of the frame. The structure is extremely simple,
It can be manufactured easily and inexpensively. Furthermore, since the vehicle transfer platform has a work space larger than the bottom surface of the vehicle body of the vehicle to be transported, it is possible to perform work such as painting the bottom surface of the vehicle body very easily and smoothly. Moreover, since the wheel receivers of the frame are provided inwardly protruding from the left and right side frame members, the height of the vehicle conveyor itself is very low, and therefore the height of the vehicle conveyor included in the vehicle conveyor is very low. The height of the painting equipment can be lowered, and the height of the painting equipment etc. can be lowered, and a large installation space is not required, and the space within the factory can be used effectively.

Of course, compared to the conventional case where a large number of slats were attached directly to the endless drive chain of the conveyor, the structure of the conveyor is much simpler, and therefore the conveyor can be manufactured easily and inexpensively. At the same time, the conveyor can be made more compact and does not require a large installation space. Also, unlike in the past, the load of the vehicle is not locally received at the slat attachment part of the conveyor chain, but the load of the vehicle is evenly distributed through the vehicle carrier, which has the advantage that the conveyor is less likely to be damaged. .

Further, the vehicle loading mechanism is disposed on at least one of the left and right sides of the vehicle loading position of the conveyor, and extends horizontally from the vehicle conveyance platform on the conveyor to the standby position on the side thereof. It is equipped with a sliding body capable of reciprocating movement and a reciprocating drive means for the sliding body, and is provided at the tip of the sliding body between the front and rear wheel receivers of the vehicle carrier, and between the rear wheel receiver and the rear frame member. A wheel passage overhang to be fitted between the transport conveyor and the vehicle unloading mechanism is disposed on at least one of the left and right sides of the vehicle unloading position of the transport conveyor. It is equipped with a sliding body that can horizontally reciprocate from the upper vehicle conveyance platform to a standby position on the side thereof, and a reciprocating drive means for the sliding body. A wheel passage overhang is provided to be fitted between both wheel receivers and between the front wheel receiver and the front frame member,
Loading and unloading of wheels to and from the wheel carrier can be performed very smoothly, and vehicles such as automobiles can be transported very efficiently and reliably.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention, and FIG. 1 is a cross-sectional view of a painting pit equipped with a vehicle transport device according to the first embodiment, FIG. 2 is an enlarged perspective view of only the vehicle transport platform, and FIG. The figure is a partially enlarged side view of Fig. 1, Fig. 4 is a partially omitted plan view of the vehicle transfer device, Fig. 5 is an enlarged perspective view of the vehicle loading mechanism, and Fig. 6 is the vehicle transfer device of the second embodiment. 7 is a schematic plan view of the 6th
Enlarged plan view of the first transfer conveyor part shown in Figure 8.
The figure is a partially enlarged side view taken along the line of FIG. 1... Floor, 2... Automobile (vehicle), 3... Painting pit, 4... Conveyor, 5... Endless drive chain, 5a, 5a... Upper straight section (conveyor transfer section), 10... Vehicle carrier, 11... Frame, 1
2, 13... Left and right side frame members, 14, 15... Front and rear side frame members, 16, 17... Wheel receiver, 18... Working space, 20... Vehicle loading mechanism, 21...
...Sliding body, 22...Fluid pressure cylinder (reciprocating drive means), 23, 24...Wheel passage overhang, 30...
...Vehicle lowering mechanism, 31...Sliding body, 32...Fluid pressure cylinder (reciprocating drive means), 33, 34...
Wheel passage overhang, 41... Accumulation line, 42...
...Painting line, 43...Drying line, 46...First transfer conveyor, 47...Second transfer conveyor, 48...Accumulation line.

Claims (1)

[Claims] 1 A substantially rectangular frame member larger than the bottom surface of the vehicle body of the conveyed vehicle 2 and having left and right side frame members 12 and 13 that can be freely loaded and unloaded onto the conveyor transport sections 5a and 5a arranged parallel to each other with a required interval. A pair of wheel receivers 16, 1 are provided inwardly protruding at a predetermined interval in the front and rear at intermediate portions of the lengths of the frame 11 and the left and right frame members 12, 13 of the frame 11, respectively.
7, and a vehicle transport platform 10 in which a work space 18 larger than the bottom surface of the vehicle body of the transported vehicle 2 is formed inside the frame body 11;
A vehicle loading mechanism 20 for loading the vehicle 2 and a vehicle unloading mechanism 30 for unloading the vehicle 2 from the vehicle transfer platform 10 are provided. a sliding body 21 which is disposed on at least one side of the conveyor 4 and capable of horizontally reciprocating between the vehicle conveyance platform 10 on the conveyor 4 and a standby position on the side thereof; and a reciprocating drive means for the sliding body 21. 22, at the tip of the sliding body 21, between the front and rear wheel receivers 16, 17 of the vehicle carrier 10, and the rear wheel receiver 1.
Wheel passing projections 23 and 24 to be fitted between the rear frame member 15 and the rear frame member 15 are provided, and the vehicle unloading mechanism 30 is located between the left and right sides of the vehicle unloading position of the conveyor 4. The vehicle carrier 1 on the conveyor 4 is arranged on at least one side of the
The sliding body 31 is equipped with a sliding body 31 that can horizontally reciprocate from 0 to a standby position on the side thereof, and a reciprocating drive means 32 for the sliding body 31. At the tip of the sliding body 32,
Between the front and rear wheel receivers 16 and 17 of the vehicle carrier 10, and between the front wheel receiver 16 and the front frame member 14
A vehicle conveying device, in which wheel passing overhangs 33 and 34 are provided, respectively, to be fitted between the .