JPH0464905B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a transport device that utilizes a self-propelled trolley (train) equipped with a driving motor for traveling, and particularly to a transport device that utilizes a self-propelled trolley (train) equipped with a drive motor for traveling, and in particular, a transport device that uses a self-propelled trolley (train) equipped with a drive motor for traveling, and in particular, a transport device that uses a self-propelled trolley (train) equipped with a drive motor for traveling. The present invention relates to a trolley-type conveyance device in which a cover support member is erected at the top of the vehicle, and the cover support member supports a cover having a substantially gate-shaped cross section that covers the upper portions of the pair of left and right guide rails.

(Prior Art and its Problems) In the trolley-type transport device configured to cover the traveling route of the self-propelled trolley with a cover having a substantially gate-shaped cross section as described above, there are The power supply line etc. to the mounted travel drive motor can be protected by the cover, but since the support member supporting the cover is installed between the pair of left and right guide rails, it is not possible to protect the power supply line etc. to the mounted travel drive motor. It is not possible to interlock the pair of left and right wheels to a drive motor via interlocking means such as a rotating shaft (axle) that traverses the left and right sides, as in a truck.

In trolley-type transport equipment that is subject to such restrictions,
Driving only one of the four wheels normally placed at the four corners of a bogie does not allow for stable running drive due to the insufficient load acting on the drive wheel. pinion method,
That is, a traveling drive system was adopted in which a single pinion gear that meshed with a rack gear installed along a guide rail was pivotally supported on the truck side, and the pinion gear was driven by a motor to cause the truck to travel.

However, with the above-mentioned rack and pinion drive system, not only is the equipment cost higher compared to the wheel drive system, but also the part where the pinion gear on the bogie side starts to mesh with the rack gear on the travel route side (the expansion and contraction due to temperature changes of the guide rail) Rack gear separation area at the absorption point, trolley transfer area, etc.)
However, there were problems such as the need to take various measures to ensure smooth engagement between both gears.

Therefore, the basic wheel drive system was reconsidered instead of the above-mentioned rack and pinion drive system, but the special type of trolley-type transport device that covers the traveling route as described above has a Conventional wheel drive systems cannot be applied as is. Furthermore, it is also necessary to change the running direction of the bogie on a horizontal plane during the bogie traveling route, but if a turntable or traverser is used as a means for horizontally turning the bogie running direction, the equipment cost will be extremely high, and therefore It is also desired that the conveying device be able to run the cart without any problem even if a general turning method of curving the guide rail on a horizontal plane is adopted.

[Means for Solving the Problems] The present invention proposes a wheel-driven trolley-type conveyance device that can solve the above-mentioned problems. In addition, the trolley-type conveyance device of the present invention includes a trolley 3
A pair of left and right guide rails 29, 30 that guide the
A cover support member 34 is installed between them, and the pair of left and right guide rails 29,
In the trolley-type conveyance device that supports a cover 33 that covers the upper part of the trolley 35, the trolley 35 includes:
A pair of front and rear idle wheels 11, 12 that roll on one guide rail 29, and a drive that rolls on the other guide rail 30 at a lateral position approximately in the center between the front and rear pair of idle wheels 11, 12. A wheel 13 and a drive motor 14 interlockingly connected to the drive wheel 13
are arranged, and the pair of front and rear idle wheels 11, 12
is a pair of front and rear wheels which are pivotally attached to the truck so as to be swingable around a vertical axis 17 and which are held parallel to the guide rail 29 by following rollers 20a to 20d, 21a to 21d that engage with the guide rail 29. The driving wheels 13 are supported by a truck so as to be movable laterally in left and right horizontal directions substantially perpendicular to the guide rail 30, and are supported by a following roller 27 that engages with the guide rail 30.
The movable member (motor 1 with reducer) held at a position directly above the guide rail 30 by a and 27b
4 and bearing member 26).

(Example) An example of the present invention will be described below based on the attached illustrative drawings. In Figures 1 to 3, 2
Reference numerals 9 and 30 denote a pair of left and right guide rails, which are connected to each other by rail support members 31 arranged at appropriate intervals in the length direction, and are laid on a floor surface 32, with rails extending laterally outward on the upper surface. Board 29
a, 30a. Reference numeral 33 denotes a cover having a gate-shaped longitudinal section, and support members 34 are fixed and erected on the rail support member 31 at appropriate intervals in the length direction.
Supported by

Reference numeral 35 is a self-propelled trolley, in which one of the pair of left and right guide rails 29, 30 is
A pair of front and rear idle wheels 11, 12 rolling on the top;
One drive wheel 13 rolling on the other guide rail 30 at a lateral position approximately in the center between the pair of front and rear idle wheels 11 and 12, and a motor 14 with a reduction gear connected to the drive wheel 13. We are prepared.

The idle wheels 11 and 12 are attached to an end of a side frame 16 that is connected to hang down from one side of the truck body 15 along the outside of the cover 33 so as to be able to swing around a vertical axis 17. The movable members 18 and 19 are pivotally mounted and supported by movable members 18 and 19 located inside the cover 33, and the movable members 18 and 19 are provided with guide rails 29 at two locations in front and behind the idle wheels 11 and 12.
Vertical axis roller 20a for tracking that pinches the
20d and horizontal shaft rollers 22 and 23 for lifting prevention that contact the lower side of the overhanging rail plate 29a of the guide rail 29 are pivotally supported.

The driving wheels 13 are provided with parallel double links 36a at the inner end of the side frame 24 that hangs down from the other side of the truck body 15 along the cover 33 and enters into the cover 33 through the lower side of the cover 33. ,36b
A bearing is attached to the output shaft 14a of the motor 14 with a reduction gear and is connected to the output shaft 14a of the motor 14 with a reduction gear, which is supported so as to be movable laterally in the horizontal and lateral directions substantially orthogonal to the guide rail 30. The member 26 includes following vertical shaft rollers 27a and 27b sandwiched between the left and right sides of the guide rail 30.
and the rail plate 30 in the guide rail 30.
A lifting prevention horizontal shaft roller 28 that comes into contact with the lower side surface of the overhang a is pivotally supported. In other words, in this embodiment, the movable member that pivotally supports the drive wheel 13 and the following vertical shaft rollers 27a, 27b and is movable laterally in the left, right, horizontal, and lateral directions is moved by the motor 14 with a speed reducer and the bearing member 26. It is structured as follows.

In the conveying device configured as described above, electric power is supplied along the guide rails 29 and 30 from a power supply line installed on the support member 34, for example, through a current collector unit attached to the self-propelled cart 35. Alternatively, the motor 14 with a speed reducer is operated by electric power supplied from a battery mounted on the self-propelled vehicle 35, and the drive wheels 13 are driven to rotate, thereby moving the self-propelled vehicle 35 along the guide rails 29, 30. The movable members 18 and 19 that pivotally support the idle wheels 11 and 12 are provided with following vertical shaft rollers 20a to 21d that sandwich the guide rail 29, so that the movable members 18 and 19 can be moved along the guide rail 29. Even in places where the rails 29 and 30 curve horizontally, the idle wheels 11 and 12 always swing around the vertical axis 17 so as to maintain a posture parallel to the length direction (tangential direction) of the guide rail 29. I will do it.

As a result, as shown in FIG. 4, the position of the guide rail 30 at the point where the drive wheel 13 rolls is displaced laterally to the left and right with respect to the self-propelled cart 35. The movable member (motor 14 with speed reducer and bearing member 26) having the following vertical axis rollers 27a, 27b is moved by the parallel double links 36a, 36b as the guide rail 30 is displaced in the left and right lateral directions with respect to the self-propelled truck 35. Since the drive wheel 13 is pivoted on the movable member (motor 14 with reducer and bearing member 26), it is always on the guide rail 30 and rotates in the longitudinal direction of the guide rail 30 ( This means maintaining a posture parallel to the tangential direction).

That is, the self-propelled trolley 3 can move either the straight path section where the guide rails 29, 30 extend linearly or the horizontal curve path section where the guide rails 29, 30 curve horizontally.
5 is running, the idle wheels 11, 12 and the driving wheels 13 do not skid horizontally or come off the guide rails 29, 30 on the guide rails 29, 30, and the guide rails 2
9, 30 and maintains a posture parallel to the length direction (tangential direction) of the rail. Therefore, the self-propelled trolley 35 supported on the guide rails 29 and 30 via these wheels 11 to 13 can smoothly travel along the straight path section and the horizontal curved path section as the drive wheels 13 rotate. I can do it.

Incidentally, it is preferable that the steering central axes of the idle wheels 11 and 12, that is, the pivoting vertical shafts 17 of the movable members 18 and 19, be arranged above or below the centers of the idle wheels 11 and 12. Further, when a rising portion or a falling portion is provided in succession at the inner end portions of the guide rails 29, 30, the following vertical shaft rollers 20a to 21d and 27a, sandwich these rising portions or falling portions from both left and right sides. 27b can be pivotally supported.

Further, a movable member supported by the parallel double links 36a and 36b so as to be movable laterally in left and right horizontal directions is provided, and the drive wheel 13 is attached to the output shaft 14a of the movable member.
It is also possible to install 4. Further, instead of the parallel double links 36a and 36b, the movable member may be supported so as to be linearly and laterally movable by a slide guide rod extending laterally to the left and right. As the drive wheel 13,
It is also possible to use two wheels adjacent one after the other and interlockingly connected to each other.

(Operations and Effects of the Invention) As shown in the above embodiments, the trolley-type conveyance device of the present invention has a gate-shaped cross-sectional cover that covers the trolley travel path (a pair of left and right guide rails) as in the conventional case.
Although it is possible to protect the power supply lines etc. when the pair of left and right guide rails and power supply lines are used together, the running drive system of the bogie uses a motor to drive the drive wheel located at the center position in the longitudinal direction. Because it rotates and drives the trolley,
Various problems in the conventional rack and pinion system are solved.

In addition, since the truck is supported at three points: a pair of front and rear idle wheels placed on one side of the left and right sides of the truck, and a drive wheel placed on the middle side of the two idle wheels, the drive wheel supports the weight of one side of the bogie in the left and right direction, that is, approximately half of the weight of the bogie, and therefore, although it drives one wheel in rotation, there is sufficient friction between the drive wheel and the guide rail. This allows the cart to run reliably without causing slips between the two. In addition, the pair of front and rear free-wheeling wheels can follow the guide rail to steer and swing around the vertical axis, and the drive wheel can follow the guide rail and move laterally in the left and right directions. Regardless of whether the bogie travels on a straight route or a horizontally curved route, the idle wheels and drive wheels will not skid laterally on the guide rail or come off the guide rail, and will always keep track of the guide rail. Length direction (tangential direction)
Therefore, the truck can run smoothly on the straight path section and the horizontal curved path section.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway plan view showing an embodiment of the present invention, Fig. 2 is a side view of the same, Fig. 3 is a vertical sectional front view of the entire conveying device, and Fig. 4 is a horizontally curved path section. It is a partially cutaway plan view showing the self-propelled trolley at the time. 29, 30...Guide rail, 33...Cover having a gate-shaped cross section, 34...Cover support member, 35...Self-propelled trolley, 11, 12...Idle wheel, 13...Drive wheel, 1
4... Motor with reducer (movable member), 17... Vertical shaft, 18, 19... Movable member, 20a to 20d,
21a to 21d, 27a, 27b...Following vertical axis roller, 26...Bearing member (movable member), 36a,
36b...Parallel double link.

Claims (1)

[Claims] 1. A trolley-type transport device in which a cover support member is erected between a pair of left and right guide rails that guide a trolley, and this cover support member supports a cover having a substantially gate-shaped cross section that covers the upper side of the pair of left and right guide rails. The truck includes a pair of front and rear idle wheels that roll on one guide rail, and a drive wheel that rolls on the other guide rail at a lateral position approximately in the center between the front and rear pair of idle wheels. , and a driving motor interlockingly connected to the driving wheels, and the pair of front and rear idle wheels are pivotally connected to the trolley so as to be swingable around a vertical axis, and include a following roller that engages with a guide rail. The driving wheels are supported by a truck so as to be movable laterally in left and right, horizontal and lateral directions substantially orthogonal to the guide rail, and are supported by a guide. A trolley-type conveyance device that is pivotally supported on a movable member that is held at a position directly above the guide rail by a follow-up roller that engages with the rail.