JPH079723Y2 - Transport train - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a transportation train that has motor-driven traveling drive wheels and is self-propelled in a constant traveling route.

(Prior art and its problems) When an uphill travel route part is incorporated in the travel route of this type of transportation train, a large thrust force that allows the vehicle to travel uphill without problems is provided in this uphill travel route part. In order to obtain it, it was necessary to interpose a speed reducer having a large reduction ratio between the motor and the drive wheels for traveling, or to use a large capacity motor.

Therefore, when the driving wheels for traveling are driven through the speed reducer having a large reduction ratio, the traveling speed naturally decreases, so that the horizontal traveling path occupying most of the traveling path and not requiring a large thrust force. The transport efficiency in the part is significantly reduced, and when a large capacity motor is used, it causes an increase in size, weight and cost of the entire transport train.

Therefore, it is conceivable to use a speed reducer capable of switching the reduction ratio, for example, increasing the reduction ratio when traveling on an uphill traveling route portion and decreasing the reduction ratio when traveling on a horizontal traveling route portion. When the operation of switching the reduction ratio of the machine, that is, the operation of the reduction ratio switching lever is automatically performed by the cam on the side of the traveling path, it is difficult to reliably hold the lever position after the switching, and the lever locking means is provided. If used together, the lock must be released prior to lever operation, and the reduction ratio switching operation mechanism becomes complicated.

(Means for Solving the Problems) In order to solve the above conventional problems, the present invention provides
A reduction gear capable of switching the reduction ratio between high and low is interposed between the drive wheel for traveling and the motor, and the reduction gear is provided with a reduction ratio switching lever, and the lever is provided at a high reduction ratio position and a reduced speed ratio position. Providing a spring that selectively holds the position,
A transport train comprising a cam for switching the switching lever from one of the two positions to the other on the traveling path side, wherein the slide guide formed on the switching lever and the switching lever are opposite to each other. By engaging a pin provided on the arranged operation lever, the switching lever and the operation lever are interlockingly connected to each other so that both levers are substantially at right angles when in the two positions, and the cam Is
The present invention proposes a transportation train configured to switch the switching lever via the operation lever.

(Embodiment) An embodiment of the present invention will be described below with reference to the attached exemplary drawings.

In FIG. 1 to FIG. 3, reference numeral 1 denotes a suspension type monorail type transportation train which is guided by one guide rail 2 and is self-propelled, and includes a drive trolley 3 and a driven trolley 4. The drive trolley 3 includes a drive wheel 5 for traveling which rolls on the upper surface of the guide rail 2, a vertical shaft roller 6 for steadying which sandwiches the upper and lower end portions of the guide rail 2 from the left and right sides at two positions, and the drive wheel. 2 before and after the position 5
The train main body is provided with horizontal shaft rollers 7a, 7b for backup, which come into contact with the lower surface of the guide rail 2 at a position, and a motor 8 for driving the drive wheels 5, and a lower end portion thereof can swing back and forth around a horizontal horizontal shaft 9. It is linked to 10. The driven trolley 4 is a driven wheel 11 that rolls on the upper surface of the guide rail 2.
And a vertical shaft roller 12 for steadying, which sandwiches the upper and lower end portions of the guide rail 2 from the left and right sides at two front and rear sides, and the lower end portion is fixed to the train body 10.

As shown in FIGS. 4 and 5, a speed reducer 13 is built in the drive trolley 3. This reducer 13
A reduction ratio switching mechanism 23 is interposed between a reduction shaft 21 that is interlockingly connected to an input shaft 14 driven by the motor 8 via reduction gears 15 to 20 and an output shaft 22 to which the drive wheels 5 are attached. The reduction ratio switching mechanism 23 is
A large gear 0 and a small gear 24 fixed to 21 and a two-step gear 25 fitted to the output shaft 22 via a slide key so as to allow only axial vibration, and a small gear portion 25a of the two-step gear 25. When the gear meshes with the large gear 20, the reduced speed ratio state A, the above 2
When the large gear portion 25b of the step gear 25 meshes with the small gear 24, the high reduction ratio state B is set, and when the two step gear 25 does not mesh with either the large gear 20 or the small gear 24, the specific transmission neutral state C is set. Becomes Reference numeral 26 is a shift lever whose one end is fixed to a rotary shaft 27, and a pair of rollers 28a, 28b for sandwiching the large gear portion 25b of the two-step gear 25 from both sides in the axial direction are axially supported at the free end portion. ing.

As shown in FIGS. 5 and 6, at the upper end of the drive trolley 3, there is provided a reduction ratio switching lever 29 which is interlocked with the shift lever 26 via the rotary shaft 27. The switching lever 29 is a receiving seat fixed to the rear end and the drive trolley 3.
By the compression coil spring 31 interposed between 30 and
The reduction gear ratio position X for engaging the small gear portion 25a of the two-step gear 25 with the large gear 20 and the large gear portion 25b of the two-step gear 25.
Is held at one of two positions, a high reduction ratio position Y that engages with the small gear 24.

Joint members 32a and 32b are fitted to both ends of the spring 31, and the arc surfaces of the joint members 32a and 32b and the switching lever 2
9 recessed circular arc surface 29a and the recessed circular arc surface 30a of the receiving seat 30
And are fitted and abutted so as to be rotatable relative to each other. Reference numeral 33 is a lever fixing means for moving the switching lever 29 between the reduction speed ratio position X and the high reduction ratio position Y in a non-transmission neutral position (the two-stage gear 25 is set in both the large gear 20 and the small gear 24). The fixing pin 37 is inserted through the pin hole 34 provided in the switching lever 29 and the pin hole 36 provided in the fixing member 35 in a state in which the fixing pin 37 is positioned in a neutral position (corresponding to the non-transmission neutral state C in which no bite occurs). As a result, the switching lever 29 can be fixed to the neutral position.

Reference numeral 38 denotes an operation lever, which is in a state opposite to the switching lever 29, and is a support shaft parallel to the rotary shaft 27 on the fixing member 35.
A left and right shaft 39 is pivotally supported, and a cam driven roller 40 is pivotally supported by a pin 41 at a tip end thereof. The switching lever 29 is provided with a slit-shaped slide guide 42 into which the pin 41 is fitted. It is formed in the length direction. 43a, 43b
Is a stopper pin for restricting the swing range of the operating lever 38. However, the switching lever 29 moves to the reduced speed ratio position X
Alternatively, when in the high reduction ratio position Y, the switching lever 29 and the operating lever 38 are substantially orthogonal to each other, and the operating lever 38 is in contact with the stopper pin 43a or 43b.

Therefore, even if the switching lever 29 located at the high speed reduction ratio position Y is at the high speed reduction ratio position Y and tries to swing toward the high speed reduction ratio position Y or the low speed reduction ratio position X against the biasing force of the compression coil spring 31. The operation lever 38, which is on the side of the swing direction and is stretched in a substantially right angle shape, blocks the swing of the switching lever 29. When the switching lever 29 is in the reduction speed ratio position X or the high reduction ratio position Y, the included angle R between the switching lever 29 and the operation lever 38 is configured to be slightly smaller than 90 degrees. Is desirable.

As shown in FIGS. 1 and 2, the speed reduction ratio switching lever 29 of the traveling electric train 1 is connected to the operating lever 38 at a position immediately before the uphill traveling route portion 44 in the traveling route of the electric train 1.
Also, a cam 45 for switching from the reduction speed ratio position X to the high reduction ratio position Y via the cam driven roller 40 is provided. The cam 45 is supported so as to be movable in the left-right lateral direction within a certain range, and is held in an operating position by a spring 46.

The electric train 1 can be driven by the motor 8 to rotate along the guide rails 2 by rotating the driving wheels 5, and the electric power is supplied to the motor 8 by the electric power supply rails laid on the guide rails 2. (Not shown) via a current collecting unit (not shown) and a motor controller provided in the transportation train 1. However, the rotation of the motor 8 is transmitted from the reduction gears 15 to 20 of the speed reducer 13 to the output shaft 22 via the reduction ratio switching mechanism 23, and the noisy wheels 5 are decelerated and noisy. When the vehicle travels on the horizontal travel route 47, 2 of the reduction ratio switching mechanism 23 is used.
The step gear 25 travels at a higher speed than when the small gear portion 25a is in the reduced speed ratio state A in which the small gear portion 25 meshes with the large gear 20 and the large gear portion 25b is in the high reduction ratio state B in which the small gear portion 25 meshes with the small gear 24. is doing. At this time, the reduction ratio switching lever 29 is in the reduced speed ratio position X as shown in FIG. 6, and is held by the biasing force of the compression coil spring 31.

When the transportation train 1 traveling on the horizontal traveling route portion 47 reaches the starting end position of the uphill traveling route portion 44 shown in FIG. 1 as described above, the cam driven roller 40 of the operation lever 38 of the traveling transportation train 1 is moved. Rides on the cam 45, and the operation lever 38 is swung in a direction away from the stopper pin 43a and approaching the stopper pin 43b. This swinging motion of the operating lever 38 causes the switching lever to move through the pin 41 and the slide guide 42.
29, the switching lever 29 is swung from the reduction speed ratio position X to the high reduction ratio position Y against the biasing force of the compression coil spring 31. Therefore, the two-step gear 25 of the reduction ratio switching mechanism 23 is switched to the high reduction ratio state B in which the large gear portion 25b meshes with the small gear 24 by the shift lever 26 which is interlocked with the switching lever 29, and the drive wheels for traveling are 5, the speed reduction ratio with respect to 5 increases, the drive wheel 5 rotates at a low speed,
The transport train 1 travels uphill on the uphill travel route portion 44 at a low speed.

The compression coil spring 31 is maximally compressed when the switching lever 29 reaches the central position between the reduction speed ratio position X and the high reduction ratio position Y, and then the switching lever 29 is moved to the high reduction ratio position Y. When displaced to the side, the spring 31 urges the switching lever 29 in the direction of swinging to the high reduction ratio position Y side,
The switching lever 29 that has reached the high reduction ratio position Y is held at the position Y.

Incidentally, when the reduction ratio switching lever 29 is switched from the reduction speed ratio position X to the high reduction ratio position Y by the cam 45, the large gear portion 25b of the two-step gear 25 that moves interlockingly via the shift lever 26.
If the small gear 24 and the small gear 24 contact each other on the tooth side surface, the movement of the switching lever 29 to the high reduction ratio position Y is hindered, but at this time, the cam 45 moves backward against the urging force of the spring 46. A situation in which the traveling of the transportation train 1 is hindered or an unreasonable force acts on the operation lever 38, the switching lever 29, the shift lever 26, and the like is avoided, and the large gear portion 25b of the two-stage gear 25 and the small gear portion 25b are small. When the gear 24 and the gear 24 are in a phase in which they can engage with each other, the retracted cam 45 returns to move by the urging force of the spring 46, the switching lever 29 is switched to the high reduction ratio position Y, and the two-stage gear 25 The large gear portion 25b and the small gear 24 mesh with each other.

Although not shown, at the end position of the uphill traveling path portion 44, the switching lever 29 held at the high reduction ratio position Y by the spring 31 is switched to the reduction speed ratio position X.
A cam having a direction opposite to that of the cam 45 is provided, and the cam causes the two-step gear 25 of the reduction ratio switching mechanism 23 to return from the high reduction ratio state B to the original reduced speed ratio state A. Therefore, in the horizontal traveling path portion 47 following the uphill traveling path portion 44, the drive wheels 5 are driven at a high speed at a reduced speed ratio, and the transport train 1 travels at a higher speed than when traveling uphill on the uphill traveling path portion 44.

It should be noted that the driving wheels 5 can be driven at a high reduction ratio even in the downward traveling route portion so that the transportation train can safely travel downward at a low speed.

Further, when the reduction ratio switching lever 29 is configured to be fixed by the fixing means 33 at the non-transmission neutral position as in the above-described embodiment, the transportation train 1 is guided by the guide rail 2 when a failure occurs.
In the case where it is manually pushed along, the switching lever 29 is fixed at the non-transmission neutral position by the fixing means 34 to separate the reduction gears 15 to 20 of the reduction gear 13 and the motor 8 from the drive wheel 5, The transport train 1 can be moved lightly. Therefore, a worm gear or the like can be used as the reduction gear of the reduction gear 13. When the switching lever 29 is thus fixed in the neutral position, the operating lever 38 is aligned with the switching lever 29, and the compression coil spring 31 is compressed to the maximum.

The structure for selectively holding the reduction ratio switching lever 29 at the two positions of the reduction speed ratio position X and the high reduction ratio position Y by using the spring is not limited to the structure of the above embodiment.

(Operation and Effect of the Invention) As described above, according to the transportation train of the present invention, the reduction ratio of the speed reducer interposed between the drive wheel for traveling and the motor is
For example, it is possible to automatically switch by the cam on the travel route side, such as a reduction speed ratio on the horizontal travel route part and a high reduction ratio on the uphill travel route part. Not directly swinging the switch lever, but indirectly swinging the switch lever via an operating lever in the opposite direction that is interlocked via the switch lever, slide guide and pin. When the lever is alternatively held by the spring in two positions of the high reduction ratio position and the reduction speed ratio position, the both levers are substantially perpendicular to each other, and the switching lever resists the urging force of the spring. Even if you try to swing unexpectedly,
Since the operation lever is stretched to prevent the movement of the switching lever, the switching lever is reliably locked at the second position, and the switching lever is unexpectedly swung to switch the reduction ratio. It can be prevented. Moreover, when swinging the switching lever via the operation lever with the cam on the travel route side, no special lever lock releasing means or operation is required, and the desired reduction ratio can be switched with only a simple cam. The operation can be surely performed.

[Brief description of drawings]

1 is a partially cutaway side view, FIG. 2 is a plan view, FIG. 3 is a front view, and FIG. 4 is a vertical sectional front view for explaining the speed reducer structure,
FIG. 5 is a vertical side view of the same, and FIG. 6 is a plan view showing a reduction ratio switching lever. 1 ... transport train, 2 ... guide rail, 3 ... driving trolley, 4 ... driven trolley, 5 ... driving drive wheel,
8 ... motor, 13 ... reducer, 15 ~ 20 ... reduction gear,
23 …… Reduction ratio switching mechanism, 25 …… Two-stage gear, 26 …… Shift lever, 29 …… Reduction ratio switching lever, 31 …… Compression coil spring, 33 …… Lever fixing means, 38 …… Operating lever,
40 …… Cam driven roller, 41 …… Pin, 42 …… Slide guide, 44 …… Climb up route part, 45 …… Cam, 46 ……
Spring, 47 ... Horizontal travel path part.

Claims (1)

[Scope of utility model registration request] 1. A reduction gear capable of switching the reduction ratio between high and low is interposed between a drive wheel for traveling and a motor, and the reduction gear is provided with a reduction ratio switching lever, and the lever is reduced to a high reduction ratio position. A transport train comprising a spring for selectively holding the speed ratio position at two positions and a cam for switching the switching lever from one of the two positions to the other on the travel route side. A slide guide formed on the switching lever and a pin provided on the operation lever arranged in the opposite direction to the switching lever are fitted to each other so that the switching lever and the operation lever are both in the two positions. Link them together so that the levers are at a right angle to each other,
The transportation train, wherein the cam is configured to switch the switching lever via the operation lever.