JP2844972B2 - Transport device using self-propelled trolley - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer device using a self-propelled vehicle that runs on a predetermined traveling route.

[0002]

2. Description of the Related Art In a transport apparatus of this type, a four-wheeled truck is used so as to be able to transport a large and heavy object to be transported, such as an automobile, and all four wheels are used as steering wheels. To be able to run smoothly on a horizontal curve path,
Do not lay a protruding steering guide rail or the like on the traveling road surface, drive only one of the four wheels to reduce the cost of the drive system, and use the motor drive during acceleration / deceleration or high speed traveling. In some cases, conditions such as the use of a backup roller for the motor-driven wheel in order to eliminate the slip between the wheel and the rail surface are required.

In order to satisfy the above-mentioned conditions, the applicant of the present invention has previously filed Japanese Utility Model Application No. 1-119823 and Japanese Patent Application No.
No. 267758 proposes a transfer device. This transfer device has a pair of left and right steered wheels arranged in front and rear on a transferable self-propelled trolley, and one of the four steered wheels is a drive steered wheel that is interlocked with a motor. A traveling road surface plate that protrudes horizontally in a cantilever shape and rotatably supports two front and rear steering wheels including the driving steering wheel, and a steering road surface plate on the bottom surface of the traveling road surface plate. A guide rail is laid, and from the wheel axle support members of the two steering wheels before and after rolling on the traveling road surface plate, passes down the lateral side of the traveling road surface plate, and the lower end portion is the steering guide. Brackets that enter the lower side of the rails are respectively provided in series, and a steering guide roller that sandwiches the steering guide rail from both the left and right sides is supported on the upper side of the lower end of each bracket, and the drive steering wheel side is provided. At the lower end of the bracket, the steering guide It is obtained by pivotally supported by a backup roller for pressing by the urging force of the spring on the lower side of the rail.

[0004]

However, in the transfer device proposed above, the steering guide rail rotatably supports two front and rear steering wheels including the drive steering wheel. Since it was laid on the bottom of the cantilevered traveling road surface plate, it was trying to use a rear-end collision prevention dolly that prevents the front and rear self-propelled vehicles from approaching within a certain distance and the objects to be conveyed collide with each other. However, in order to guide the dolly by the steering guide rail, the dolly has to be suspended, which has a disadvantage that the structure is very complicated and the cost is greatly increased.

[0005] Further, in order to operate the backup roller only in a specific section, a belt for operating the backup roller is attached below the traveling road surface plate in the specific section. The three-layer structure of the guide rail and the backup roller operating strip is complicated, and the mounting structure of the steering guide rail and the backup roller operating strip is complicated. Further, it was not possible to remove only the traveling road surface plate for inspection under the traveling road surface without removing the steering guide rail requiring high mounting accuracy.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and its features are indicated by reference numerals in the embodiments described later. The self-propelled carriage 1 is provided with two sets of front and rear steered wheels 2a, 2b and 3a, 3b, each of which is a pair of left and right.
One of the two steered wheels is a drive steered wheel 2a interlockingly connected to the motor 12. On the traveling route side, two front and rear steered wheels including the drive steered wheel 2a that protrude horizontally in a cantilever shape and include the drive steered wheel 2a. A traveling road surface plate 13 rotatably supported, and a steering guide rail 14 located below and spaced apart from the bottom surface of the traveling road surface plate 13 are disposed before and after rolling on the traveling road surface plate 13. Wheel support members 6 for the two steered wheels 2a, 3a
a, 7a, each of the brackets 2 which hangs down the lateral side of the traveling road surface plate 13 and whose lower end enters between the traveling road surface plate 13 and the steering guide rail 14;
2 and 23, and the brackets 22 and 2
The steering guide rollers 24 and 25 sandwiching the steering guide rail 14 from both left and right sides are supported below the lower end of the steering wheel 3, and the bracket 22 on the drive steering wheel 2 a side is further supported.
A bottom surface 13b of the traveling road surface plate 13 is provided between the traveling road surface plate 13 and the steering guide rail 14 above the lower end of the traveling road surface plate 13.
A backup roller 26 which is pressed against the spring by the urging force of the spring is pivotally supported.
23, dollies 27 that collide with each other when the front and rear transport self-propelled vehicles 1 approach within a certain distance.
28 are connected via connecting rods 35 and 37, respectively, and each of the dollies 27 and 28 is connected to the steering guide rail 1 between the traveling road surface plate 13 and the steering guide rail 14.
The support wheels 31 and 32 rolling on the upper side 4 and steering guide rollers 29 and 30 sandwiching the steering guide rail 14 from both left and right sides are pivotally supported.

In implementing the present invention having the above-described structure, a pair of left and right steered wheels 2a, 2b and 3a, 3
b, the respective wheel shaft support members 6a, 6b and 7a, 7b can be interlocked and connected to each other so as to perform the interlocking steering movement in the same direction. The steering guide rail 14 is laid on the floor via a support member 19, and the traveling road surface plate 13 is supported on the intermediate member 20 supported by the support member 19 and continuous along the traveling path. It can be constituted by a strip-shaped plate which is detachably attached to the device.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. In FIG. 1, reference numeral 1 denotes a self-propelled carriage, and a pair of right and left steering wheels is provided at two front and rear positions. Wheel 2a,
2b and 3a, 3b are provided. Each steered wheel 2a
To 3b are wheel axle supporting members 6a, 6 which are supported on the bogie frame by vertical steering shafts 4a, 4b and 5a, 5b, respectively.
b and 7a, 7b, a pair of left and right wheel axle support members 6a, 6b and 7a, 7b are connected to steering levers 8a-9, which are connected to the wheel axle support members 6a-7b.
b and the tie rods 10 and 11 are configured to perform interlocking steering movements in the same direction. Further, one of the front steered wheels 2a is operatively connected to a motor 12 with a speed reducer attached to a wheel shaft support member 6a that supports the wheel 2a.

As shown in FIGS. 1 and 4, on the traveling route side of the transporting self-propelled vehicle 1, the driving steering wheel 2a extends horizontally in a cantilever manner and is positioned in the front-rear direction of the wheel 2a. Road surface plate 13 that rotatably supports the steered wheels 3a to be driven, a steering guide rail 14 that is located downward from a lower surface of the travel road surface plate 13, and the steered wheels 2b and the steering. A traveling road surface member 15 utilizing H-shaped steel is provided for rotatably supporting the steering wheel 3b positioned in the front-rear direction of the wheel 2b.

As shown in FIGS. 4 and 5, the steering guide rail 14 is provided on a work floor 16 along a bogie traveling path.
The vehicle is mounted on a support member 19 installed at appropriate intervals in the traveling path direction via a support base 18 in a pit 17 dug down into the pit 17, and the traveling road surface plate 13 is mounted on the supporting member 19 in the traveling path direction. Is mounted on the intermediate member 20 using a square steel pipe attached so as to be continuous with the steering guide rail 13 so that one side of the intermediate member 20 cantileverly protrudes above the steering guide rail 13. Further, the traveling road surface member 15 has a surface 15 serving as a wheel rolling support surface.
It is mounted on the support member 19 so that a is at the same level as the surface 13a of the traveling road surface plate 13.

As described above, the traveling road surface plate 1 in the pit 17
In the self-propelled carriage 1 supported by the carrier 3 and the traveling road surface member 15, the upper work support surface 1a is substantially at the same level as the work floor surface 16, and the pit openings on the left and right sides of the self-propelled carriage 1 are provided. Are covered by cover plates 21a and 21b which are detachably mounted on the work floor 16 in a detachable manner.

As shown in FIGS. 1, 3, 4 and 5,
Wheel-side support members 6a and 7a that support the motor-driven steering wheel 2a and the steering wheel 3a positioned in the front-rear direction of the steering wheel 2a are provided with the lateral lateral position of the traveling road surface plate 13. L-shaped bracket 2 hanging down and extending into pit 17
As shown in FIGS. 2 to 5, the lower ends of the brackets 22 and 23, which extend horizontally between the traveling road surface plate 13 and the steering guide rail 14, are provided as shown in FIGS. Steering guide rollers 24 and 25 sandwiching the steering guide rail 14 from both left and right sides at two front and rear sides are pivotally supported, and a bracket 22 on the motor-driven steering wheel 2a side is provided with the steering wheel 2a. A backup roller 26 is provided at a position directly below and below the traveling road surface plate 13.

In FIG. 2 and FIG. 3, reference numerals 27 and 28 denote rear-end collision trolleys, which respectively include steering guide rollers 29 and 30 that sandwich the steering guide rail 14 at two front and rear sides from both left and right sides. , And supporting wheels 31, 32 for rolling on the steering guide rail 14, and rubber bumpers 33, 34. The front dolly 27 is connected to the bracket 22 by a connecting rod 35 and vertical pins 36 a at both ends thereof. 36
b, the rear end dolly 28 is connected to the bracket 23 by a connecting rod 37 and vertical pins 38a, 38 at both ends thereof.
8b. As shown in the drawing, a detector 39 immediately before a collision that detects the rear end dolly 28 of the preceding bogie without contact can be attached to the head dolly 27.

As shown in FIGS. 6 and 7, the backup roller 26 is provided at a middle position of a movable arm 41 supported by a horizontal support shaft 40 on a horizontally lower end of the bracket 22 so as to be vertically swingable. Is supported by a support shaft 42. The movable arm 41 is urged upward by a compression coil spring 44 interposed between its free end and a spring receiving seat 43 on the bracket 22 side, but the lower end is fixed to the spring receiving seat 43. An upper limit for the backup roller 26 not to contact the lower surface 13b of the traveling road surface plate 13 by a stopper 47 constituted by a head of a bolt 46 penetrating a through hole 45 provided at the free end of the movable arm 41. It is received in position.

The self-propelled carriage 1 having the structure described above.
The power collection unit 4 attached to the carriage-side bracket 23 from the power supply rail 48 (see FIGS. 2 to 5) attached to the side surface of the intermediate member 20 that supports the traveling road surface plate 13.
9 (see FIGS. 3 and 4), the motor 12 is driven to rotate the steered wheels 2a by self-propelling by driving the motor 12 to power the motor 12.

At this time, the steering guide rollers 24 of the brackets 22 and 23 located at two front and rear positions of the self-propelled carriage 1,
Since 25 is engaged with the steering guide rail 14, the self-propelled trolley 1 travels along the steering guide rail 14. Also, the leading dolly 27 is pushed by the self-propelled trolley 1 and travels on the steering guide rail 14 integrally with the self-propelled trolley 1, and the rear end dolly 28 is pulled by the self-propelled trolley 1 and steered. Travels on the guide rail 14 integrally with the self-propelled carriage 1.

When the self-propelled vehicle 1 travels on a horizontal curve path where the traveling path (steering guide rail 14) of the self-propelled vehicle 1 curves horizontally, the steering guide rollers 24 and 25 are used. A wheel support member 6a for supporting the drive steering wheel 2a and a wheel support member 7a for supporting the steering wheel 3a via the brackets 22 and 23 respectively vertically operate along the steering guide rail 14. The steering wheel rotates around the steering shafts 4a and 5a, and the steering rotation is performed via the steering levers 8a to 9b and the tie rods 10 and 11 with the wheel shaft supporting member 6b that supports the steering wheel 2b. Since the power is transmitted to the wheel supporting member 7b that supports the wheel 3b, all the wheels 2a to 3b
Is steered along the horizontal curve of the steering guide rail 14, and the self-propelled trolley 1 can travel smoothly along the horizontal curve of the steering guide rail 14.

As described above, the transporting self-propelled carriage 1 travels along the steering guide rail 14, but as shown in FIG.
Is separated from the lower side surface 13b and is not functioning. Therefore, the drive steering wheel 2a rotated and driven by the motor 12 receives the load of one-fourth of the load acting on the entire four wheels 2a to 3b, and
3a.

However, in the section where the transporting self-propelled vehicle 1 is continuously driven at a low speed, as described above, the wheels 2a are driven only by the load shared by the drive steering wheels 2a.
There is no danger that the wheels 2a will slip against the traveling road surface plate 13 even if they are in pressure contact with each other. In the high-speed intermittent running section that needs to be stopped for a certain time in the above, if the wheel 2a is pressed against the traveling road surface plate 13 only by the load shared by the drive steering wheel 2a as described above, The wheel 2a may slip during acceleration from the stop state.

Therefore, in the high-speed intermittent running section as described above, as shown in FIG.
The backup roller 26 lays a thickening material 48 that rides up against the urging force of the spring 44 to increase the thickness of the road surface plate 13. Accordingly, in the high-speed intermittent running section, a reaction force caused by the backup roller 26 riding on the lower surface of the thickening material 48, that is, the lower surface 13 b of the thickened traveling road surface plate 13 against the urging force of the spring 44, is generated. Acts downward on the drive steering wheel 2a,
Since the drive steering wheel 2a is forcibly pressed against the surface 13a of the traveling road surface plate 13 by both the load and the urging force of the spring 44, there is no possibility that the wheel 2a slips during acceleration, and the transporting self-propelled vehicle is used. By doing 1, it is possible to ensure high-speed intermittent running.

In the case of a four-wheeled bogie, one wheel may rise from the running surface due to the horizontal accuracy of the wheel running surface and the accuracy of the wheel support level on the bogie. If the one raised wheel is the driving steering wheel 2a, it is impossible to expect smooth and reliable running. Therefore, at least the driving steering wheel 2a must be surely brought into contact with the surface 13a of the traveling road surface plate 13. There is. As a countermeasure for this, for example, as disclosed in the above-mentioned earlier specification and drawings of the present applicant, the wheel shaft support member 7 for supporting the steered wheels 3a, 3b.
a, 7b are supported by vertical steering shafts 5a, 5b on the left and right ends of a movable frame whose center portion is rotatably supported in a seesaw motion about a longitudinal support shaft, and a steering wheel 2b is a wheel shaft. A method of supporting the support member 6b so as to be able to move up and down within a certain range and biasing the wheel 2b downward by a spring, or a method of moving the wheel shaft support member 6b supporting the steering wheel 2b within a certain range with respect to the bogie frame. It is possible to employ a method of supporting the wheel shaft supporting member 6b downward by a spring while supporting the wheel shaft supporting member 6b as much as possible.

[0022]

As described above, according to the transfer device using a self-propelled trolley of the present invention, a four-wheeled trolley is used, so that a large and heavy object to be transferred such as an automobile can be transferred safely. Since all four wheels are steering wheels, the vehicle can smoothly travel on a horizontal curve path.
The steering guide rail can be laid under the running surface to make the running surface flat. Since only one of the four wheels is driven by a motor, the drive system can be configured at low cost. The backup roller can prevent the wheels driven by the motor from slipping at the time of deceleration or high-speed running, and the like.

That is, the backup roller is brought into contact with a lower surface of a cantilevered traveling road surface plate that rotatably supports two front and rear steering wheels including a driving steering wheel,
A steering guide rail for steering the front and rear two steering wheels including the drive steering wheel via a steering guide roller is not attached to the lower surface of the traveling road surface plate, but the backup guide rail is provided. The backup roller and the rear-end collision roller are located at the position below the rear-end collision prevention dolly that prevents the conveyed objects from colliding with each other by the rollers and the front and rear self-propelled vehicles approaching within a certain distance. Compared with the conventional configuration in which the steering guide rail is disposed at a position above the prevention dolly, the rear-end collision prevention dolly can be easily supported and guided by the steering guide rail. it can.

Further, when the backup roller is operated only in a specific section, an appropriate thickening material may be laid on the lower surface of the traveling road surface plate in the specific section, and the conventional three-layer structure is not obtained. . Further, it is possible to remove only the traveling road surface plate for inspection below the traveling surface without removing the steering guide rail requiring high mounting accuracy.

Therefore, according to the configuration of the present invention, the structure and installation of the traveling route side equipment in this type of transport apparatus can be simplified and not only can be implemented at low cost, but also can be implemented at low cost.
Maintenance inspection work is also easy.

[Brief description of the drawings]

FIG. 1 is a schematic plan view showing a wheel configuration of a self-propelled transport vehicle.

FIG. 2 is a partially omitted schematic plan view showing a configuration below a traveling road surface plate.

FIG. 3 is a partially cutaway side view showing the steering means of the truck and a dolly for preventing rear-end collision.

FIG. 4 is a schematic vertical sectional front view showing a sectional configuration of a truck traveling route.

FIG. 5 is a vertical sectional front view showing a detailed structure of a main part of FIG. 4;

FIG. 6 is a longitudinal sectional side view of a main part showing a state where a backup roller is not operated.

FIG. 7 is a longitudinal sectional side view of a main part showing a state in which a backup roller is operated.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Self-propelled trolley 2a-3b Steering wheel 4a-5b Vertical steering axis 6a-7b Wheel axle support member 8a-9b Steering lever 10,11 Tie rod 12 Wheel drive motor 13 Running road surface plate 14 Steering guide Rail 15 Traveling road surface member 16 Work floor surface 17 Pit 18 Support gantry 19 Support member 20 Intermediate member 22, 23 Bracket 24, 25, 29, 30 Steering guide roller 26 Backup roller 27 Leading dolly 28 Rear end dolly 31, 32 Supporting wheels 35, 37 Connecting rod 41 Movable arm 44 Compression coil spring 47 Stopper 48 Thickening material

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B61B 13/06

Claims (3)

(57) [Claims] 1. A self-propelled transport vehicle has two sets of front and rear steered wheels, each paired left and right, and one of the four steered wheels is used as a drive steered wheel that is operatively connected to a motor. A traveling road surface plate that protrudes horizontally in a cantilever shape and supports the two front and rear steering wheels including the driving steering wheel so as to be able to roll, and separates downward from the bottom surface of the traveling road surface plate. And a steering guide rail positioned at a predetermined position, and a steering axle member for two front and rear steering wheels rolling on the traveling road surface plate.
From each of these, it hangs down the lateral side of the traveling road surface plate and
The lower end is the traveling road surface plate and the steering guide rail.
While continuously arranged a bracket enter between, the respective blanking
A steering guide roller sandwiching the steering guide rail from both left and right sides is supported below the lower end of the racket, and further, the traveling path is provided above the lower end of the bracket on the drive steering wheel side. A backup roller that presses against the lower surface of the traveling road surface plate by the urging force of a spring is supported between the surface plate and the guide rail for steering , and the two front and rear
The front and rear transport self-propelled carriages are fixed on each of the rackets
Dolly colliding with each other when approaching within a distance
Each is connected via a connecting rod, and each dolly is
Between the road surface plate and the guide rail for steering
A supporting wheel that rolls on the guide rail and the steering wheel
A steering guide roller that sandwiches the idrail from the left and right sides
A transport device that uses a self-propelled bogie and supports it . 2. The self-propelled trolley according to claim 1, wherein each of the pair of left and right steered wheels is interlockedly connected to each other so as to perform an interlocking steering movement in the same direction. Transport device. 3. The steering guide rail is supported by a support member.
Laid on the floor surface, and the traveling road surface plate is
On the intermediate member that is supported by the
Claims comprising removably mounted strips
Item 3. The transfer device using the self-propelled carriage according to item 1 or 2.