JPH0716970Y2 - Truck mileage measuring device with multi-stage rack and pinion structure - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for measuring the traveling distance of a truck.

[0002]

2. Description of the Related Art Conventionally, as a device (not shown) for measuring the travel distance of a bogie, a pinion provided on the bogie is meshed with a rack installed on the travel path of the bogie along the entire length thereof. 2. Description of the Related Art There is a rack-and-pinion trolley mileage measuring device that measures the mileage of a trolley by the number of rotations of a pinion that rotates with traveling. On the other hand, for example, in an iron mill, there is a heavy-weight storage / transport device as a device (not shown) for transporting a coil of thin steel plate to a coil storage location. This device is composed of a first carriage that can move by loading a coil, and a second carriage that loads the first carriage and travels in a direction intersecting the first carriage (for example, an orthogonal direction).

[0003]

However, this trolley mileage measuring device has a structure that cannot be incorporated into the above-mentioned storage / conveying device. That is, when the second carriage is loaded with the first carriage and moves in a direction intersecting with the first carriage,
There is a problem that the pinion on the truck must be removed from the rack laid along the traveling path of the first truck.

[0004]

The present invention is provided in a first rack mounted on a first truck and a second truck loaded with the first truck and traveling in a direction intersecting with the first truck. A second rack, and a third rack that has a gear train of which the gears at both ends mesh with an odd number of gears that mesh with the first and second racks, and is movably provided to the first and second racks, respectively.
The above problem is solved by an apparatus including a distance measuring unit that operates by the movement of the third rack to measure the movement distance of the first carriage.

[0005]

The first carriage is loaded with the goods to be conveyed, travels in a direction intersecting with the second carriage, and is separated from the second carriage. At this time, the first
The first rack provided on the truck also moves together with the first truck. At the same time, the gear meshed with the first rack is rotated as the first rack moves, and the rearmost gear is rotated via each gear in the gear train. The rearmost gear rolls on the second rack and moves the third rack in the same direction as the first carriage. The third rack activates the distance measuring means during movement, and causes the distance measuring means to measure the traveling distance of the first carriage. The first carriage is stopped at a predetermined position by the distance measuring means. The empty first carriage that has lowered the conveyed product to a predetermined position returns to above the second carriage. At this time, the first rack also returns to the top of the second carriage together with the first carriage. By the returning operation of the first rack, each gear of the gear train is also rotated in the reverse direction, and the third rack is pulled onto the second carriage. After that, the second trolley travels to another place while the first trolley and the trolley mileage measuring device are loaded.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. The trolley mileage measuring device 20 is a device for measuring the mileage of the first trolley 21 that conveys the coil C (see FIG. 4), and includes a first rack 22 included in the first trolley
The second rack 24 mounted on the second carriage 23 that is loaded with the first carriage 21 and travels in a direction orthogonal to the first carriage 21, and the gears 51 and 52 at both ends are the first and second racks 22 and 2, respectively.
A third rack 55 having a gear train 25 composed of an odd number of gears that meshes with the fourth gear 4 and movably with respect to the first and second racks 22 and 24, and the first truck by the movement of the third rack 55. Distance measuring means 35 for measuring the moving distance of 21
It is equipped with

First, the first and second bogies 21 and 23 provided with a bogie traveling distance measuring device (hereinafter, simply referred to as "measuring device") 20 will be described. 1st trolley 2
1 (see FIGS. 2 to 5) constitutes a coil transfer device 30 with the second carriage 23. The coil transfer device 30 includes a coil loading / unloading location and a coil storage location (both not shown).
It is a device that conveys the coil C (see FIG. 4) between and.
The first carriage 21 has a coil lift 31 and is mounted on a pair of fixed rails R3 and R3 (one of which is not shown) and a second carriage 23.
It travels in the direction of arrow A in FIGS. 2 and 3 on the pair of upper rails R1 and R1 for the first carriage. The second truck 23 has a fixed coil stand 32 and first truck rails R1 and R1 and travels on the second truck rails R2 and R2 (see FIG. 3) in the direction of arrow B in FIG. It is like this. The rail R3 is orthogonal to the rails R1 and R2.
Further, a plurality of sets of fixed rails R3 are laid on both sides of the second truck rail R2 in proportion to the number of coil storage locations.

Therefore, in the second carriage 23, the first carriage 21 is loaded on the rails R1 and R1 for the first carriage, and the coil C is loaded on the coil mount 32 so that the rails R2 and R2 for the second carriage are mounted.
Drive on R2 and stop at fixed rails R3, R3. After that, the first carriage 21 raises the coil lift base 31, receives the coil C from the coil mounting base 32, transfers from the first carriage rail R1 to the fixed rail R3, and travels to a predetermined coil storage location (not shown). To do. And
The first carriage 21 lowers the coil lift base 31, lowers the coil on a storage coil mount (not shown) having the same structure as the coil mount 32 on the second carriage 23, and the second carriage 23 is empty. Return to top. The second carriage 23 is an empty first carriage 2
1 is loaded and a new coil is received to run to the coil loading / unloading place.

Next, the measuring device 20 (see FIGS. 6 to 9)
Will be described. The first rack 22 and a pulse linear generator (hereinafter referred to as “PLG”) 27.
Is included in the second carriage 23. The PLG 27 generates a pulse in accordance with the movement of a linearly moving object, and the pulse interval changes in proportion to the moving speed of the object. Therefore, the moving distance of the object can be measured by counting the number of pulses. Known circuits are used for the counting circuit for counting the pulses, the arithmetic circuit for converting the counting number into the distance, etc., and illustration and description thereof are omitted. The second rack 24 is included in the first truck 21.

The moving bar 26 is in the shape of a rectangular tube as a whole, and a gear train 25 consisting of eleven gears is provided inside. The transmission pinions 51 and 52 on both sides have a larger diameter than the other nine idle gears 53, the transmission pinion 51 meshes with the first rack 22, and the transmission pinion 52 meshes with the second rack 24. The number of gears in the gear train 25 may be an odd number, and is not limited to 11. A plurality of rollers 54 are provided on both side surfaces of the moving bar 26. The roller 54 includes a pair of guide rails GR2 and GR2 provided on the second carriage 23 and having a U-shaped cross section.
It is designed to drive. Further, a third rack 55 that meshes with the idle gear 40 is integrally provided on the upper surface of the moving bar 26.

Further, a plurality of small-diameter rollers 56 and 57 are provided on both side surfaces of the lower portion of the moving bar 26. The small-diameter roller 56 runs on guide rails GR1 and GR1 provided in the first rack 22 and having a U-shaped cross section. The roller 57 (see FIG. 9) is the first rack 2
It comes in contact with the side of 2. Therefore, the moving bar 26 and the third rack 55 include the roller 54 and the guide rail G.
Guide with R2, small diameter roller 56 and guide rail GR1
Is guided by the first rack 22 and the second rack 24, and is moved in the same direction as the first rack 22 with the movement of the first rack 22. Among the above structures, the idle gears 40, 41, the PLG 27, the counting circuit, the arithmetic circuit (all are not shown), etc. constitute the distance measuring means 35.

Next, the operation of the measuring device 20 will be described. When the first carriage 21 is placed on the second carriage 23 (see FIG. 5), the moving bar 26 overlaps below the second rack 24. The first truck 21 receives the coil C from the second truck 23, transfers from the first truck rail R1 to the fixed rail R3, and then a predetermined coil storage location (not shown).
When traveling up to, the first rack 22 also moves integrally with the first carriage 21. By the movement of the first rack 22, the transmission pinion 51 meshed with the first rack 22 is rotated, and finally the rearmost transmission pinion 52 is also rotated via the idle gear 53 of the gear train 25.

The transmission pinion 52 rolls and moves on the second rack 24, which is fixed to the second carriage, in accordance with the rotation, and moves the moving bar 26 in the traveling direction of the first carriage 21. As a result, the third rack 5 integrated with the moving bar 26
5 also starts to move so as to be pulled out from under the second rack 24 by the movement of the first carriage 21. At this time,
The moving distance of the third rack 55 with respect to the second rack 24 is
This is half the travel distance of the first carriage 21. Third rack 55
While moving, through the idle gears 40, 41 to the PLG
Activate 27. The PLG 27 measures the travel distance of the first carriage 21, that is, the travel distance up to that point, and reliably stops the first carriage 21 near a coil stand installed in a coil storage location (not shown).

When the first truck 21 which has emptied the coil at the coil storage location returns to the second truck 23, the first rack 22 reverses the gears 51, 53, 52 of the gear train 25 to move the moving bar 26. And the third rack 55 is pulled back below the second rack 24. Also at this time, PLG27 is the third
Since it is operated by the rack 55, the first truck 21
Is stopped at a predetermined position on the second carriage 23.

Next, a bogie traveling distance measuring device 120 of another embodiment will be described with reference to FIGS. This measuring device 120 is different from the above-described measuring device 20 in that the PLG 127 is provided in the approximate center of the second carriage 23, and a pair of the first rack 122 and the second rack 124 are provided. That is.

In this measuring apparatus 120 as well, the first truck 21 receives the coil C from the second truck 23, transfers from the first truck rail R1 to the fixed rail R3, and a predetermined coil storage location (not shown). When traveling up to, the first rack 122 also moves integrally with the first carriage 21. First
By the movement of the rack 122, the transmission pinion 151 meshed with the first rack 122 is rotated, and the gear train 12
Finally, the transmission pinion 152 is also rotated via the idle gear 153 of No. 5. As the transmission pinion 152 rotates, the second rack 1 in the fixed state provided on the second carriage 1
24, and moves the moving bar 126 to the first carriage 21.
In the direction of travel. The moving bar 126 is moved by being supported by the first and second racks 122 and 124 by the guide of the roller 154 and the guide rail GR2 and the guide of the small diameter roller 156 and the guide rail GR1. As a result, the third rack 155, which is integrated with the moving bar 126, also starts moving so as to be pulled out from under the second rack 124 by the movement of the first carriage 21. At this time, the moving distance of the third rack 155 with respect to the second rack 124 is half the moving distance of the first carriage 21.

The third rack 155 rotates each gear 61 of the gear train 60 included in the second carriage 23 while moving. Then, the central gear 62 of the gear train 60 is connected to the PLG 12
Activate 7. The gear train 60 has substantially the same structure as the gear train 125 on the moving bar 126 and has 13 gears. The PLG 127 measures the travel distance of the first carriage 21 and reliably stops the first carriage 21 near a coil stand installed at a coil storage location (not shown) (see FIG. 10).

When the first truck 21 having the coils emptied at the coil storage location returns to the second truck 23, the first rack 122 causes the gears 151 and 15 of the gear train 125 to move.
3, 152 is reversed, and the moving bar 126 and the third rack 155 are pulled back below the second rack 124. Also at this time, since the PLG 127 is operated by the third rack 155, the first carriage 21 is stopped at a predetermined position on the second carriage 23. Of the above structure, gear train 60, PLG
27, a count circuit, an arithmetic circuit (all not shown), etc., constitute the distance measuring means 135.

The measuring device 120 can measure the traveling distance of the first carriage 21 not only when the first carriage 21 travels leftward in FIG. 10 but also when it travels rightward. You can do it. Therefore, the measuring devices 20 and 120 have a multi-stage rack and pinion structure in which the first rack and the third rack, which are in an overlapping state with respect to the second rack, are pulled out as the first carriage moves. , Between the first carriage and the second carriage that move in a direction intersecting with each other.

[0020]

[Effect of the Invention] The trolley mileage measuring device of the present invention is the second
Since the first rack and the third rack that are in an overlapping state with respect to the rack have a multi-stage rack and pinion structure in which they are pulled out as the first truck moves, The effect that it can be provided between the second trolley and the second trolley. Further, it is not necessary to provide a rack along the traveling path of the first carriage, and the traveling path of the first carriage can be simplified.

[Brief description of drawings]

FIG. 1 is a principle view of a trolley mileage measuring apparatus of the present invention.

FIG. 2 is a plan view showing a state in which the vehicle mileage measuring device of the present invention is included in a coil transfer device, and a part of the coil transfer device is omitted.

FIG. 3 is a front view of FIG.

FIG. 4 is a left side view of FIG.

FIG. 5 is a front view of the vehicle mileage measuring device when the first vehicle is loaded on the second vehicle.

FIG. 6 is a plan view of the trolley travel distance measuring device in FIG. 5, showing a partial cross section.

FIG. 7 is a front view of FIG. 6 with a part omitted.

FIG. 8 is an enlarged view of the vehicle mileage measuring device in FIG.

9 is a sectional view taken along the line 9-9 of FIG.

FIG. 10 is a schematic front view of a bogie mileage measuring device of another embodiment.

11 is a cross-sectional view taken along the line 11-11 of FIG. 10 when the first carriage is mounted on the second carriage.

[Explanation of symbols]

 20,120 Truck traveling distance measuring device 21 1st truck 22,122 1st rack 23 2nd truck 24,124 2nd rack 25,125 Gear train 26,126 Moving bar 35,135 Distance measuring means 51,52,151, 152 Transmission pinion (gear) 55,155 Third rack

Claims (1)

[Scope of utility model registration request] 1. A first rack provided on a first truck, a second rack provided on a second truck that is loaded with the first truck and travels in a direction intersecting the first truck, and A third rack, which has a gear train composed of an odd number of gears that mesh with the first and second racks, and is movable with respect to the first and second racks, and the movement of the third rack. And a mileage measuring device for a trolley, which is operated by the vehicle and measures the distance traveled by the first trolley.