JP2835997B2 - Geared trolley - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small geared trolley having no speed reducer.

[0002]

2. Description of the Related Art Conventionally, as a geared trolley, as shown in FIGS. 7 and 8, lower portions of a pair of side plates 6, 7 arranged on both sides in the width direction of a rail 5 are connected by a plurality of connecting members 8. A drive gear (not shown) and a drive shaft 10 to which an operation wheel 9 is fixed are rotatably fitted to one side plate 6, and the one side plate 6 has a driven gear 11 that meshes with the drive gear. A pair of wheels 12 are rotatably mounted at intervals in the longitudinal direction of the rail, and an operation chain 13 is wound around the operation wheel 9.
A pair of wheels 14 are rotatably mounted at intervals in the longitudinal direction of the rail, and the wheels 12 and 14 are mounted on the lower flange 15 of the rail 5, and the lower side of the lower flange 15 is mounted on the other side plate 7. The bearing roller 16 that engages with
A structure in which the upper part of the hanging member 17 is fixed to the connecting member 8 in the intermediate part, and the hanging hook 19 rotatably mounted on the upper part of the electric chain block 18 is engaged with the lower part of the hanging member 17 is used. Are known.

[0003]

In the conventional geared trolley described above, the electric motor 2 of the electric chain block 18 is used.
There is no problem when 0 is facing the traveling direction of the geared trolley. However, the electric motor 2 of the electric chain block 18
When 0 is oriented in a direction perpendicular to the trolley traveling direction, as shown in FIG. 8, it is necessary to lengthen the drive shaft 10 to which the operation wheel 9 is fixed, and to largely separate the operation wheel 9 from the trolley frame. . Therefore, it is necessary to provide a bearing roller 16 for preventing the wheels 14 from floating on the side plate 7 opposite to the side plate 6 supporting the drive shaft 10, so that the structure of the geared trolley becomes complicated. Further, if the electric chain block 18 turns around the hanging hook 19 by about 90 °, the electric motor 20 is inconvenient because it hits the operation chain 13. Furthermore, since the electric chain block 18 is attached to the connecting member 8 at the intermediate portion by means of the hanging hooks 19 via the hanging fittings 17, the rail 5
The gap from the lower surface of the motor chain block to the upper surface of the electric chain block 18, the so-called dead space, is widened by the length of the hanging bracket 17 and the hanging hook 19, and has a drawback that the load allowance is reduced.

[0004]

In order to advantageously solve the above-mentioned problems, in the geared trolley according to the present invention, a drive gear 2 is provided between a pair of drive wheels 1 arranged at intervals in the longitudinal direction of the rail. In the interposed trolley, the operation wheel 3 is arranged outside the traveling direction of the drive wheel 1, and the pulling direction of the operation chain 4 wound around the operation wheel 3 matches the traveling direction of the trolley, and the trolley side plate 6, 7, the front and rear end portions of the support member 30 extending in the front and rear direction at the lower middle portion
The electric chain block 18 is inserted through the connecting member 21, and the electric chain block 18 is suspended from the center of the supporting member 30 via the pivot 31. Are housed in the downward recessed portions formed in the recesses.

[0005]

1 to 4 show a geared trolley according to a first embodiment of the present invention. A pair of side plates 6 and 7 extending in the longitudinal direction of the rail are spaced from each other in the width direction of the rail 5. And a lower portion of each side plate 6, 7 is connected to a plurality of connecting members 21 arranged at intervals in the longitudinal direction of the rail 5.
To form a trolley frame 22.

A drive gear 2 is rotatably mounted on the one side plate 6, and drive wheels 1 are rotatably mounted on both front and rear sides of the drive gear 2, that is, both sides in the rail longitudinal direction. Gear 2 provided on
3 is meshed with the drive gear 2 and the side plate 6
A rotation shaft 24 extending in the left-right direction is attached at a position away from the drive wheel 1 in the rail longitudinal direction,
The operating wheel 3 is fixed to the tip of the rotating shaft 24, the operating chain 4 is wound around the operating wheel 3, the driving sprocket 25 is fixed to the intermediate portion of the rotating shaft 24, Over the fixed driven sprocket 27 and the driving sprocket 25,
A transmission chain 28 is wrapped around, and a chain guide member 29 which is close to the front and rear portions of the operation wheel 3 is fixed to the side plate 6.

A pair of front and rear wheels 14 are rotatably mounted on the other side plate 7, and each of the connecting members 21 is inserted into a support member 30 extending in the front-rear direction at an intermediate lower portion of the trolley frame 22. Then, when the electric chain block 18 is suspended via the pivot 31 and the front part of the operation chain 4 is gripped and pulled downward, each drive wheel 1 is rotated in the forward movement direction, and the geared trolley is moved forward. When the rear part of the operation chain 4 is gripped and pulled downward, each drive wheel 1 is rotated in the reverse movement direction, and the geared trolley moves backward.

FIGS. 5 and 6 show a geared trolley according to a second embodiment of the present invention, in which a drive gear 32 for traveling is provided at the other end of a rotary shaft 24 having an operation wheel 3 fixed at one end. The transmission gear 33, which is fixed and meshes with the traveling drive gear 32 and the gear 23 of one drive wheel 1, is rotatably mounted on the side plate 6, but the other configuration is the same as that of the first embodiment. The same is true.

Also in the case of the second embodiment, the operation chain 4
When the front part is gripped and pulled downward, each drive wheel 1 is rotated in the forward movement direction, and the geared trolley moves forward,
When the rear part of the operation chain 4 is gripped and pulled downward, each drive wheel 1 is rotated in the reverse movement direction, and the geared trolley moves backward.

As shown in FIG. 3 and FIG.
The lower part of each of the side plates 6 and 7 connected by the plurality of connecting members 21 inserted into the connecting member 21 forms a recess between the connecting members 21 and is suspended from the supporting member 30 via the pivot 31. The upper portion of the electric chain block 18 is housed in the concave portion. Since the suspension of the electric chain block 18 is configured as described above, a gap between the lower surface of the rail 5 on which the driving wheel 1 is mounted and the upper surface of the electric chain block 18, a so-called dead space, is minimized. It has been narrowed to the limit. The minimum allowable is the trolley frame 22 and each side plate 6,7
Is determined by the strength of the object. By minimizing the dead space, the load allowance can be maximized.

[0011]

According to the present invention, in a trolley in which a driving gear 2 is interposed between a pair of driving wheels 1 arranged at intervals in the longitudinal direction of the rail, the operating wheel 3 is moved in the traveling direction of the driving wheels 1. Since the pulling direction of the operation chain 4 wound around the operation wheel 3 and the traveling direction of the trolley are aligned outside, the operation chain 4 is operated at a position away from the luggage to drive the geared trolley. And it is possible to prevent the operation chain 4 from interfering with the hoist body composed of the trolley frame 22 and the electric chain block 18 suspended therefrom,
Moreover, the operability of the operation chain 4 can be improved, and the trolley frame 22 can be downsized. In addition, the connecting member 21 is inserted into the support member 30 extending in the front-rear direction at the middle lower portion of the trolley frame 22, and the electric chain block 18 is suspended from the support member 30 via the pivot 31, so that each side plate is 6,
7 has an electric chain block 18
And the gap from the lower surface of the rail 5 to the upper surface of the electric chain block 18, so-called dead space, can be reduced to an allowable minimum, and the load allowance can be maximized. .

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional plan view showing a geared trolley according to a first embodiment of the present invention.

FIG. 2 is a partial cross-sectional plan view showing a part of FIG. 1 in an enlarged manner.

FIG. 3 is a side view showing the geared trolley according to the first embodiment of the present invention.

FIG. 4 is a partially longitudinal side view showing a transmission mechanism from a driving sprocket to a driven sprocket in FIG. 2;

FIG. 5 is a partial cross-sectional plan view showing a geared trolley according to a second embodiment of the present invention.

FIG. 6 is a side view showing a geared trolley according to a second embodiment of the present invention.

FIG. 7 is a front view showing a state where an electric motor of an electric chain block in a conventional geared trolley is oriented in a rail longitudinal direction.

FIG. 8 is a front view showing a state in which an electric motor of an electric chain block in a conventional geared trolley faces in a direction perpendicular to a rail.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 drive wheel 2 drive gear 3 operation wheel 4 operation chain 5 rail 6 side plate 7 side plate 8 connecting member 9 operation wheel 10 drive shaft 11 driven gear 12 wheel 13 operation chain 14 wheel 15 lower flange 16 support roller 17 hanging bracket 18 electric chain block Reference Signs List 19 hanging hook 20 electric motor 21 connecting member 22 trolley frame 23 gear 24 rotating shaft 25 driving sprocket 26 supporting shaft 27 driven sprocket 28 transmission chain 29 chain guide member 30 support member 31 pivot 32 traveling driving gear 33 transmission gear

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B66C 11/16 B66C 9/14

Claims (1)

(57) [Claims] 1. A trolley in which a drive gear 2 is interposed between a pair of drive wheels 1 arranged at intervals in the longitudinal direction of a rail, an operation wheel 3 is arranged outside the traveling direction of the drive wheels 1 to operate the trolley. Match the pulling direction of the operation chain 4 wound around the wheel 3 with the traveling direction of the trolley, and
Support member extending in the front-rear direction at the lower middle part between 6 and 7
The front and rear ends of the support member 30 are inserted into the connecting member 21 to support the support member.
The electric chain block 18 is pivoted at the center of the member 30.
31 and is suspended through the electric chain block 18
Is formed below the side plates 6 and 7 between the connecting members 21.
Geared trolley housed in the downward recess.