JPH046582B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a floor conveyor equipped with a self-propelled electric truck.

BACKGROUND TECHNOLOGY Conventionally, for example, in an automobile production line or a household appliance production line, a floor-type conveyor is equipped with a self-propelled electric trolley whose upper surface serves as an article placement section, and a guide rail that guides the trolley. However, in conventional floor type conveyors, a pinion installed on the cart is engaged with a rack installed on the guide rail side, and the cart is driven by rotating the pinion with a motor. (For example, US Pat. No. 4,207,821)
(see publication). However, in such conventional conveyors, precision is required for the meshing of the racks and pinions, so it is very troublesome to match the pitch of the teeth of the racks that are to be connected to each other, especially at the connecting portion of the guide rail. Therefore, it took time and effort to install the conveyor. In addition, the meshing of the rack and pinion while the bogie was running caused noise, which worsened the working environment. Furthermore, when inspecting or repairing the conveyor, workers have to crawl under the guide rails, making maintenance difficult.

Purpose of the Invention The purpose of the present invention is to solve the above-mentioned problems, to enable conveyor installation work to be easily carried out without requiring much precision, to eliminate noise caused by the running of carts, and to improve the working environment. It can be maintained in an extremely quiet state, and inspection and repair work can be performed very easily, and maintenance is easy. There is no possibility of dirt getting between the guide rail and the rail, and it has excellent running performance.Also, since there is no protruding part on the outer surface of the guide rail, it is easy to access for workers on automobile production lines, etc. We are trying to provide a floor type conveyor with high safety.

Composition of the Invention In order to achieve the above-mentioned object, the present invention includes a trolley whose upper surface serves as an article placement section and which has a required number of driven wheels, electric wheels, and a drive device for the same.
Each is provided with clamping rollers that face the electric wheels at a predetermined interval, and the bogie guide rail includes a horizontal wall portion on which the driven wheels are placed, and a side wall portion provided in a rising shape on the outer edge of the horizontal wall portion on which the driven wheels are placed. At the upper edge of the side wall of the guide rail,
A cover rail with a generally inverted L-shaped cross section, consisting of a horizontal wall and a hanging wall extending downward from the inner edge of the rail, is removably attached.
The electric wheels and the clamping rollers are pressed against both the inner and outer surfaces of the hanging wall of the rail, and the power supply rail is attached to the inner surface of the side wall of the guide rail, with which the contact of the pantograph provided on the trolley comes into contact. The gist of this paper is a floor-type conveyor equipped with a self-propelled electric trolley.

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

In this specification, front, rear, left and right refer to the second
The drawings are used as a reference, and the front refers to the right side of the second drawing, the rear refers to the right side of the drawing, or the left refers to the back side of the sheet of drawing paper in the same drawing, and the right refers to the front side of the same drawing.

In the drawings, a floor conveyor 1 according to the invention is shown.
The vehicle is equipped with a pair of left and right guide rails 2 and a self-propelled electric trolley 3 that runs on these guide rails 2. Each guide rail 2 is made of hollow extruded aluminum material, and includes a lower horizontal wall portion 2a on which the driven wheels 4 of the electric trolley 3 are mounted, a side wall portion 2b provided in a rising shape on the outer edge of this wall portion, and a side wall portion. Upper horizontal wall part 2 provided so as to extend inward on the upper edge of 2b
c, the cross section is substantially U-shaped with a long cross section.
Further, the upper horizontal wall portion 2c of the guide rail 2 is provided with a cover having a substantially inverted L-shaped cross section and made of an aluminum hollow extruded material, which is made up of a horizontal wall portion 5a and a hanging wall portion 5b extending downwardly from the inner edge of the horizontal wall portion 5a. A rail 5 is attached. A power supply rail 7 is attached to the inside of the side wall portion 2b of the guide rail 2 via a mounting member 6. The lower horizontal wall 2a of the guide rail 2 is provided with a recess 8 which opens upward and whose opening is narrower than the inside, and a plate nut 9 fitted into the recess 8 is inserted into the recess 8. The lower horizontal wall portion 2a is coupled to the base 16 by screwed bolts 10. Similarly, the upper horizontal wall 2c of the guide rail 2 is also provided with a downwardly opening recess 8, and a plate nut 9 and a bolt 10 are connected to the upper horizontal wall 2c and the horizontal wall 5 of the cover rail 5.
and a are combined.

On the other hand, the electric trolley 3 includes horizontal lower and upper frames 11 and 12, and a vertical support 13 between the two. A box-shaped covering member 14 is attached. Four sets of driven wheels 4 are provided at the four corners of the lower frame 11, one pair at the front and one at the rear. The driven wheels 4 are a pair of front and rear wheels, and these wheels are attached to both front and rear ends of a swing mounting plate 17, which is approximately triangular when viewed from the side, so as to be able to freely rotate around shafts 18, respectively. The central portion of the swing mounting plate 17 is supported by the upper end of a support bracket 19 to be swingable in a vertical plane by a pivot 20, and the support bracket 19 is fixed to the lower frame 11 in an upright manner.

Electric wheels 22 are provided horizontally at the rear of the lower frame 11. The electric wheel 22 is attached by a pivot shaft 24 between a pair of upper and lower horizontal swinging arms 23, and the pivot shaft 24 is rotationally driven by a drive device 25. The drive device 25 includes a general-purpose motor, a speed reducer, and a brake. electric wheel 22
A covering material such as a urethane lever is adhered to the outer peripheral surface of the cover rail 5, and this is brought into contact with the inner surface of the lower edge portion of the hanging wall portion 5b of the cover rail 5. A cylindrical boss 26 is attached to the base end 23a of the swing arm 23, and the boss 26 is rotatably fitted onto a vertical shaft 28 fixed to a bracket 27. A spring attachment rod 29 is attached to the tip 23b of the swing arm 23 with a pin. The spring mounting rod 29 passes through the upper end of a vertical wall 30a extending in the front-rear direction of a T-shaped bracket 30 provided in an upright manner on the lower frame 11, and has a spring receiver 31 attached to its tip. A compressed coil spring 32 is fitted over the spring mounting rod 29 between the wall 30a and the spring receiver 31, and this spring 32 keeps the spring receiver 31 on the right side, that is, the electric wheel 22 is placed on the cover rail. It is urged so as to come into pressure contact with the inner surface of the hanging wall portion 5b of No. 5. The lower frame 11 is provided with a pair of front and rear horizontal clamping rollers 33 facing the electric wheels 22. The lower ends of the vertical shafts 34 of these clamping rollers 33 are attached to brackets 35 provided on the lower frame 11 in a rightward protruding shape.
is fixed. The portion near the lower edge of the hanging wall portion 5b of the cover rail 5 is pinched by these clamping rollers 33 and the electric wheels 22 from both the inside and outside sides, and the rotation of the electric wheels 22 by the operation of the drive device 25 causes The electric trolley 3 is made to travel along the way. A pair of left and right horizontal guide rollers 36 are provided on the front right edge of the lower frame 11. The vertical shaft 3 of one of these left guide rollers 36
7 is fixed to a horizontal bar 38 having an L-shaped cross section of the lower frame 6, and a vertical shaft 37 of the other guide roller 36 is fixed to a bracket 39 having a U-shaped cross section. A lower edge portion of the hanging wall portion 5b of the cover rail 5 is held between the left and right sides by both guide rollers 36.
Further, a pantograph 40 is provided on the right edge of the center portion of the lower frame 11 in a rightwardly protruding shape, and a contactor 41 of the pantograph 40 is brought into contact with the power supply rail 7. A mounting rod 42 of the pantograph 40 is fixed to a bracket 43 provided on the lower frame 11 in an upright manner.

In the conveyor 1, when the drive device 25 is turned on, the motor is activated and the electric wheels 22 are rotated. The motor is supplied with electrical energy taken in from the power supply rail 7 via the pantograph 40. When the electric wheel 22 rotates, the electric cart 3 travels because the outer circumferential surface of the electric wheel 22 is pressed against a portion near the lower edge of the hanging wall portion 5b of the cover rail 5. And in this case,
Four pairs of driven wheels 4, one at the front and one at the front, are mounted on the horizontal wall 2a of the guide rail 2, and the electric wheels 22, a pair of front and rear clamping rollers 33, and a pair of left and right horizontal guide rollers 36 are used to cover and cover the wheels 4, respectively. Since the hanging wall portion 5b of the rail 5 is sandwiched from both the inside and outside sides, the electric trolley 3 is attached to the guide rail 2.
and travels reliably along the cover rail 5. The vibrations in the longitudinal direction caused by the ups and downs of the guide rail 2 are absorbed by the swinging mounting plate 17, which holds four sets of driven wheels 4, one pair each of the electric trolley 3, swinging in a vertical plane. The vibration in the direction is absorbed by the horizontal swinging arm 33 having the electric wheels 22 swinging in a horizontal plane against the elastic force of the compression coil spring 32. Furthermore, since the outer peripheral surface of the electric wheels 22 is covered with a covering material such as urethane rubber, it is very quiet, and therefore the noise generated while the electric trolley 3 is running is very small. Note that various articles are placed on the article placement section 15 of the electric trolley 3 depending on the products being produced, such as automobiles and home appliances. In some cases, a fixture (not shown) may be appropriately attached to the article mounting portion 15 of the electric trolley 3 to support the article.

Effects of the Invention As described above, the conveyor according to the present invention includes a trolley 3 whose upper surface is the article placement part 15 and which has a required number of driven wheels 4, an electric wheel 22, a drive device 25 thereof, and an electric wheel. 22 are provided with clamping rollers 33 facing each other at a predetermined interval, and the bogie guide rail 2 is provided in an upright manner on the horizontal wall portion 2a on which the driven wheels 4 are mounted and on the outer edge of the horizontal wall portion 2a. The upper edge of the side wall portion 2b of the guide rail 2 has a horizontal wall portion 5a and a hanging wall portion 5b extending downward from the inner edge of the horizontal wall portion 5a. cover of
The rail 5 is removably attached, and the electric wheels 22 and clamping rollers 33 are pressed against both the inner and outer surfaces of the hanging wall 5b of the cover rail 5, and the inner surface of the side wall 2b of the guide rail 2 A power supply rail 7 is attached to which the contact 41 of the pantograph 40 provided on the trolley 3 comes into contact. and the hanging wall portion 5b of the cover rail 5.
Since the trolley 3 is moved by pressing the inner and outer surfaces of the conveyor 1, the installation work of the conveyor 1 can be easily carried out without requiring much precision. In addition, compared to conventional rack and pinion conveyors, there is no noise and the work environment can be maintained in an extremely quiet state.In addition, when inspecting or repairing conveyor 1, it is possible to keep the work environment extremely quiet.
Since the rail 5 can be easily removed, there is no need to work by crawling under the guide rail of the conveyor as in the conventional case, and the work can be performed very easily and maintenance is easy. Furthermore, since the guide rail 2 is covered with a cover rail 5, the electric trolley 5 and the guide rail 2
There is no possibility of dirt getting in between the pantograph 40 and the power supply rail 7, and the running performance is excellent.Also, since there is no protruding part on the outer surface of the guide rail 2, it is suitable for use in automobile production lines, etc. The operator can work in close proximity to the electric trolley 3, resulting in good accessibility and very high safety.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a partially cutaway cross-sectional view of the conveyor, FIG. 2 is a right side view of the same partially cutaway, FIG. 3 is a partially cutaway plan view of the conveyor, and FIG. The figure is a cross-sectional view along the line of FIG. 2. 1... Conveyor, 2... Guide rail, 2a...
Lower horizontal wall portion, 2b... Side wall portion, 2c... Upper horizontal wall portion, 3... Electric trolley, 4... Driven wheel, 5...
...Cover rail, 5a...Horizontal wall part, 5b...
Hanging wall part, 7... Power supply rail, 14... Covering member, 15... Article placement part, 22... Electric wheel, 2
5... Drive device, 33... Clamping roller, 40...
…pantograph.

Claims (1)

[Claims] 1. A trolley 3 whose upper surface serves as an article placement section 15 and has a required number of driven wheels 4 is equipped with electric wheels 22,
This driving device 25 and a clamping roller 33 opposed to the electric wheel 22 at a predetermined interval.
The bogie guide rail 2 is composed of a horizontal wall portion 2a on which the driven wheels 4 are mounted, and a side wall portion 2b provided in an upright manner on the outer edge of the horizontal wall portion 2a, and the side wall of the guide rail 2 A cover rail 5 having a generally inverted L-shaped cross section and consisting of a horizontal wall portion 5a and a hanging wall portion 5b extending downward from the inner edge of the horizontal wall portion 5a is removably attached to the upper edge of the portion 2b. - The electric wheels 22 and the clamping rollers 33 are pressed against both the inner and outer surfaces of the hanging wall portion 5b of the rail 5, and the pantograph 4 provided on the trolley 3 is attached to the inner surface of the side wall portion 2b of the guide rail 2.
A floor-type conveyor equipped with a self-propelled electric trolley to which a power feeding rail 7 is attached which is brought into contact with a contactor 41 of 0.