JPH052383Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field 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 used, which is equipped with a self-propelled electric trolley having an article placement section and a guide rail for guiding the trolley. However, in conventional floor-type conveyors, a spur gear installed on the cart side is engaged with a rack installed on the guide rail side, and the cart is driven by itself by rotating the spur gear with a motor. The spur gear was disposed between a pair of horizontal rollers at the front and rear of the electric trolley provided on the electric trolley.

Problem to be Solved by the Invention However, with this method, in the part where the trolley guide rail and the rack are curved, both the front and rear horizontal rollers of the electric trolley and the spur gear located between the two rollers are connected to the rail and the rail at three points, so to speak. Since the electric trolley is in contact with the rack, the electric trolley cannot travel along the guide rail and the curve of the rack, which limits the installation of the conveyor line and makes it impossible to effectively utilize the space within the factory. It was hot.

Therefore, an electric trolley has been developed which has a pivot located in the same vertical plane as the horizontal roller axis and is equipped with a spur gear that meshes with a rack provided on the guide rail side (for example, Jikkosho 51−
(See Publication No. 27526).

According to this conventional floor conveyor equipped with an electric trolley, the electric trolley can run along the conveyor line even when the conveyor line is curved. A guide rail equipped with a rack and an upward power supply rail are arranged on one side of the guide rail in the middle of a pair of left and right side rails having a substantially L-shaped cross section and arranged at predetermined intervals. The attached current collector brush was brought into contact with the power supply rail from above.

Therefore, with such a conventional floor-type conveyor, the power supply rail remains exposed between both side rails, and there is a risk that dirt or other foreign matter may get on the power supply rail, causing trouble. There was a problem of lack of safety, and there was also a problem of poor running performance because the horizontal rollers for steadying were only in contact with the central guide rail.

The purpose of this invention is to solve the above-mentioned problems of the prior art, and to not only enable the electric trolley to travel reliably along the conveyor line even when the conveyor line is curved, but also to enable inspection of the conveyor. Maintenance is easy, and the pantograph and power supply rail of the electric trolley are not exposed to the outside, making it easy to run, and the guide rail protrudes from the outside surface. Because there are no parts, work vehicles can work very close to electric trolleys on automobile production lines, etc., and have good accessibility.
The purpose of the present invention is to provide a floor conveyor equipped with a self-propelled electric trolley that is extremely safe.

Means for Solving the Problems In order to achieve the above object, this invention includes a self-propelled electric trolley and a pair of left and right trolley guide rails that are arranged oppositely at a predetermined distance from each other, The electric trolley of the self-propelled electric trolley has wheels guided by the trolley guide rail, a pair of front and rear horizontal rollers that come into contact with the sides of the rail, and one of the front and rear horizontal rollers. A floor type conveyor having a pivot axis disposed in the same vertical plane as the pivot axis, and comprising a spur gear that meshes easily with the carriage guide rail in the longitudinal direction, and a drive device for rotating the spur gear. In the above, each bogie guide rail includes a lower horizontal wall portion, a side wall portion provided in an upright manner on the outer edge of the lower horizontal wall portion, and an upper horizontal wall portion provided on the upper edge of the side wall portion so as to extend inwardly. The cross section is approximately U-shaped with a long cross section, and a rack is provided on the upper surface of the upper horizontal wall of the left bogie guide rail in the length direction of the guide rail, so that the wheels of the electric trolley of the self-propelled electric bogie are , a pair of front and rear and a pair of left and right upper parts placed on the upper surfaces of the lower horizontal walls of the left and right bogie guide rails, and brought into contact with the inner surfaces of the upper horizontal walls of the left and right bogie guide rails, respectively, on the electric trolley. The electric trolley is provided with a horizontal roller and a lower horizontal roller that is brought into contact with the inner surface of the lower horizontal wall of the rail, and a pantograph is provided on the right side of the trolley body of the electric trolley, and the contact of the pantograph is connected to the trolley A self-propelled trolley, characterized in that a cover is attached to the upper horizontal wall of the right side bogie guide rail, which is brought into contact with the power supply rail on the guide rail side and covers the horizontal wall and the right half of the electric trolley. The main idea is a floor-type conveyor equipped with an electric trolley.

Function According to the above-mentioned self-propelled electric trolley of the floor type conveyor,
The axis of the driving spur gear provided on the electric trolley is
Since it is arranged in the same vertical plane as the pivot axis of one of the pair of front and rear horizontal rollers that come into contact with the side surface of the trolley guide rail, even when the conveyor line is curved, The electric trolley can travel reliably along the conveyor line.

The electric trolley also has a pair of front and rear upper horizontal rollers and a pair of left and right upper horizontal rollers that are in contact with the inner surfaces of the upper horizontal walls of both the left and right bogie guide rails, and a pair of upper horizontal rollers that are in contact with the inner surfaces of the lower horizontal walls of the rails. Since it is equipped with a lower horizontal roller that comes into contact with the lower horizontal roller, there is less horizontal vibration and the running stability is excellent. Since a cover is attached to cover half of the trolley, there is no chance of dirt getting into the electric trolley's pantograph or power supply rail, resulting in excellent running performance. Also,
The cover can be easily removed when inspecting or repairing the conveyor, making the work extremely simple and maintenance easy.

Furthermore, a pair of left and right bogie guide rails are provided, respectively, on a lower horizontal wall, a side wall provided in an upright manner on the outer edge of the lower horizontal wall, and an upper horizontal wall provided on the upper edge of the side wall so as to extend inward. The cross section is approximately U-shaped with a long cross section, and a rack is provided on the upper surface of the upper horizontal wall of the left bogie guide rail.
In addition, the above-mentioned cover is attached to the upper horizontal wall of the right side bogie guide rail, and there is no protruding part on the outer surface of the guide rail, making it difficult for work vehicles to work in close proximity to electric bogies on automobile production lines, etc. It has good accessibility and is extremely safe.

Embodiment Next, an embodiment of this invention will be described based on the drawings.

In this specification, front, rear, left and right refer to the second
Based on the drawing, the front refers to the left side of the drawing, the back refers to the right side of the drawing, or the left refers to the back side of the sheet of paper in the same drawing, and the right refers to the front side of the same drawing.

In the drawing, a floor type conveyor 1 according to this invention is shown.
is a pair of left and right guide rails 2, 2, and a self-propelled electric trolley 3 that runs along these guide rails 2, 2.
It is equipped with Each guide rail 2 is made of aluminum hollow extrusion, and has a lower horizontal wall portion 2a;
Side wall part 2 provided in a rising shape on the outer edge of this
b, and an upper horizontal wall portion 2c provided on the upper edge of the side wall portion 2b so as to extend inward, forming a substantially U-shape with a long cross section.

The electric trolley 3 is equipped with a pair of front and rear trolleys 4, 5, and the front electric trolley 4 has a pair of front and rear trolleys 4, 5 placed on the upper surfaces of the lower horizontal walls 2a, 2a of the trolley guide rails 2, 2 on both the left and right sides. a set of wheels 6;
A pair of front and rear upper horizontal rollers 7, 7 and a pair of left and right upper horizontal rollers 7, 7 that are brought into contact with the inner surfaces of the upper horizontal walls 2c, 2c of the rails 2, 2, the same number of lower horizontal rollers 7, 7, and a front horizontal roller 7 a spur gear 10 having a pivot 11 disposed in the same vertical plane as the pivot 8 of the carriage guide rail 2 and meshing with a rack 9 provided longitudinally on the bogie guide rail 2; and a drive device 12 for rotating the spur gear 10. Equipped with: The drive device 12 includes a general-purpose motor 13, a reduction gear 14, and a brake 15.

On the other hand, the rear driven trolley 5 has four wheels 6 in total, one pair in front and one in front, four upper horizontal rollers 7 in total in one pair in front and rear, and the same number of lower horizontal rollers 7 arranged opposite to upper horizontal rollers 7. , 7. An article mounting table 16 is fixed at the top of the front electric trolley 4 and the rear driven trolley 5.

Further, the main body 4a of the front electric trolley 4 is equipped with a horizontal roller pressure contact device 20. This device 2
0 is the front right horizontal roller 7 or rack 9
and an L-shaped swinging lever 21 having a horizontal roller 7 on the opposite side to the meshing side with the spur gear 10, which is pivoted at one end and is horizontally swingable by a pivot shaft 22;
The lever 21 has a joint member connected by a pin 23 at the other end thereof, and a core rod 24 having a male threaded portion at the front end, and a through hole through which the core rod 24 is loosely inserted, and is fixed to the trolley body 4a. supported plate 25
, a locking member 26 screwed to a portion near the front end of the core rod 24 such that its position can be adjusted freely, and a coil spring 27 fitted over the core rod 24 between the support plate 25 and the locking member 26. It is.

In the horizontal roller pressure welding device 20, the resiliency of the coil spring 27 urges the locking member 26 and the core rod 24 forward with respect to the support plate 25, thereby causing the L-shaped lever 21 to move toward its pivot 25. The front right horizontal roller 7 at one end of the lever 21 is brought into pressure contact with the inner surface of the upper horizontal wall 2c of the guide rail 2 on the same side by swinging clockwise in a horizontal plane with the lever 21 as the center. Electric trolley 4 as reaction force
The entire body is pressed toward the left guide rail 2, and the upper and lower horizontal rollers 7 on the left side are brought into pressure contact with the upper and lower horizontal walls 2c and 2a of the rail 2, and the spur gear 10 is firmly engaged with the rack 9. It is something that can be done.

The lower horizontal wall 2a of each guide rail 2 is provided with a recess 28 that opens downward and has a narrower opening than the inside, and a plate nut 29 fitted into the recess 28. The lower horizontal wall portion 2a is coupled to the base 30 by a bolt (not shown) screwed into the base 30. In addition, a recess 28 opening upward in the upper horizontal wall portion 2c of each guide rail 2
are similarly provided.

A cover 31 that covers the horizontal wall 2c and the right half of the electric trolley 4 is coupled to the upper horizontal wall 2c by plate nuts 29 and bolts (not shown). Further, a pantograph 33 is provided on the right side of the substantially central portion of the trolley main body 4a, and a contactor of the pantograph 33 is brought into contact with a power supply rail (not shown).

In the conveyor 1, when the drive device 12 is turned on, the motor 13 is activated and the spur gear 10 rotates, which is engaged with the rack 9 of the left guide rail 2. , 2. As shown in FIG. 1, in the part where the guide rails 2, 2 are bent, the pivot 8 of the front left horizontal roller 7 of the electric trolley 4 and the pivot 11 of the spur gear 10 are arranged in the same vertical plane. Therefore, the electric trolley 4 comes into contact with the guide rail 2 and the rack 9 at two points, so to speak, and therefore the electric trolley 4 can travel along the curved guide rail 2. .

In addition, the electric trolley 4 is equipped with a total of four upper horizontal rollers 7, 7, one pair at the front and one at the front, and the same number of lower horizontal rollers 7, 7, so there is little horizontal vibration and excellent running stability. and the upper horizontal wall 2c of the right side bogie guide rail 2.
Since a cover 31 is attached to cover the horizontal wall portion 2c and the right half of the electric trolley 4, dirt does not get into the pantograph 33 of the electric trolley 4 or the power supply rail, and the running performance is excellent. ing. Furthermore, since the cover 31 can be easily removed when inspecting or repairing the conveyor, the work can be performed very easily and maintenance is easy.

Further, both the left and right bogie guide rails 2, 2 are each shaped substantially U-shaped with a long cross section, and a rack 9 is provided on the upper surface of the upper horizontal wall portion 2c of the left bogie guide rail 2. Since the above-mentioned cover 31 is attached to the upper horizontal wall 2c and there is no protrusion on the outer surface of the guide rail 2, workers can work very close to the electric trolley 3 on an automobile production line or the like. It has good accessibility and is extremely safe.

In the above embodiment, the self-propelled electric trolley 3 is equipped with two trolleys 4 and 5, but the truck 3 only needs to be equipped with at least one electric trolley 4.

In the embodiment, the pivot 11 of the spur gear 10 is arranged in the same vertical plane as the pivot 8 of the front horizontal roller 7, but the pivot 11 of the spur gear 10 is arranged in the same vertical plane as the pivot 8 of the rear horizontal roller 7. There is no problem even if it is placed inside.

Note that various articles are placed on the article mounting table 16 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 table 16 of the electric trolley 3 to support it.

Effects of the invention As mentioned above, in the floor type conveyor equipped with a self-propelled electric trolley according to this invention, the axis of the driving spur gear provided on the electric trolley of the electric trolley comes into contact with the side surface of the trolley guide rail. Since the electric trolley is placed in the same vertical plane as the pivot axis of one of the pair of front and rear horizontal rollers, even if the conveyor line is curved, the electric trolley will not move along the conveyor line. The conveyor line can be moved reliably, and therefore the conveyor line can be installed freely, making effective use of space within the factory.

The electric trolley also has a pair of front and rear upper horizontal rollers and a pair of left and right upper horizontal rollers that are in contact with the inner surfaces of the upper horizontal walls of both the left and right bogie guide rails, and a pair of upper horizontal rollers that are in contact with the inner surfaces of the lower horizontal walls of the rails. Since it is equipped with a lower horizontal roller that comes into contact with the lower horizontal roller, there is less horizontal vibration and the running stability is excellent. Since a cover is attached to cover half of the trolley, there is no chance of dirt getting into the electric trolley's pantograph or power supply rail, resulting in excellent running performance. Also,
The cover can be easily removed when inspecting or repairing the conveyor, making the work extremely simple and maintenance easy.

Further, a pair of left and right bogie guide rails are respectively provided on the lower horizontal wall, a side wall provided in a rising shape on the outer edge of the lower horizontal wall, and an upper horizontal wall provided on the upper edge of the side wall so as to extend inward. The cross section is generally U-shaped with a long cross section, and a rack is provided on the upper surface of the upper horizontal wall of the left bogie guide rail, and the above-mentioned cover is attached to the upper horizontal wall of the right bogie guide rail. Since there is no protruding part on the outside of the guide rail, workers can work very close to the electric trolley on automobile production lines, etc., which means that it has good accessibility and is extremely safe. This effect is achieved.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention; Fig. 1 is a schematic plan view for explaining the running state of the electric cart on a curved section of a conveyor line, Fig. 2 is a side view of the electric cart, and Fig. 3 is a side view of the electric cart. 4 is a partially enlarged side view of the electric trolley, and FIG. 5 is an enlarged plan view of the horizontal roller pressing device portion of the electric trolley. 1... Floor type conveyor, 2... Bogie guide rail,
2a...lower horizontal wall part, 2b...side wall part, 2c...
... Upper horizontal wall part, 3 ... Self-propelled electric trolley, 4 ...
Electric trolley, 4a... Trolley body, 6... Wheels,
7...Horizontal roller, 8...Pivot, 9...Rack,
10... Spur gear, 11... Pivot, 12... Drive device, 31... Cover, 33... Pantograph.

Claims (1)

[Scope of utility model registration request] It is equipped with a self-propelled electric trolley 3 and a pair of left and right trolley guide rails 2, 2 which are arranged opposite to each other at a predetermined interval. , 2 guided by wheels 6
and a pair of front and rear horizontal rollers 7, 7 which are brought into contact with the side surfaces of the same rails 2, 2, and in the same vertical plane as the pivot axis 8 of one of the two horizontal rollers 7, 7. A floor type conveyor comprising a spur gear 10 having a pivot shaft 11 disposed thereon and meshing with a rack 9 provided longitudinally on a bogie guide rail 2, and a drive device 12 for rotating the spur gear 10. , each bogie guide rail 2 has a lower horizontal wall portion 2a, a side wall portion 2b provided in an upright manner on the outer edge of the lower horizontal wall portion 2a, and an upper horizontal wall portion 2b provided so as to extend inwardly from the upper edge of the side wall portion 2b. The wall portion 2c forms a substantially U-shaped cross section with a long cross section, and a rack 9 is provided on the upper surface of the upper horizontal wall portion 2c of the left bogie guide rail 2 in the length direction of the guide rail 2. Wheels 6 of electric trolley 4 of electric trolley 3
are placed on the upper surfaces of the lower horizontal walls 2a, 2a of both the left and right bogie guide rails 2, 2, respectively, and the inner surfaces of the upper horizontal walls 2c, 2c of the left and right bogie guide rails 2, 2 are placed on the electric trolley 4, respectively. a pair of front and rear and a pair of left and right upper horizontal rollers 7,
7 and the lower horizontal wall portions 2a, 2a of the same rails 2, 2.
A pantograph 33 is provided on the right side of the trolley body 4a of the electric trolley 4, and a contactor of the pantograph 33 is connected to the power supply on the trolley guide rail 2 side. The upper horizontal wall portion 2 c of the right side bogie guide rail 2 is brought into contact with the rail, and the horizontal wall portion 2
A floor type conveyor equipped with a self-propelled electric trolley, characterized in that a cover 31 is attached to cover the right half of the electric trolley 4.