JPH0192109A - Travel crane for introduction and delivery - Google Patents

Abstract

PURPOSE:To facilitate the conveyance and assembly of a crane in an automatic warehouse by supporting a travel drive unit and drive wheel to machine frames, respectively, which are removably mounted to a lower section frame, and by transporting them to an installation job site, independently from the lower section frame. CONSTITUTION:A machine frame 13 is composed of a pair of right and left side plates 17, a pair of attaching plates 18 coupled to the forward ends of the side plates 17, a coupling plate 19 connecting between the rear ends of the side plates 17 and a coupling plate connecting between the attaching plates 18. Further, a drive wheel 14 is disposed between the side plates 17 and fitted on the output shaft 21 of a speed reduction unit 15 which is laterally arranged between the side plates 17. Further, a motor 16 is coupled on the speed reduction unit 16 vertically thereof, and a rotation check torque arm 22 is mounted between the speed reduction unit 15 and the attaching plates 18. Further, the subassembled unit 3 is attached to the lower section frame 1 through the intermediary of the attaching plates 18 in a job site. A driven wheel unit 3 is also supported to the machine frame 26. With this arrangement, it is possible to facilitate the transportation and assembly.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a traveling crane for loading and unloading used in automated warehouses, etc., in particular, a crane that connects a lower frame and an upper frame with a column, and A lifting carriage that goes up and down is installed,
This invention relates to a traveling crane for loading and unloading warehouses that has a traveling drive device installed in the lower frame.

(Prior art and its problems) A conventional crane of this type has a driving wheel pivotally supported at one end of the lower hoom, a driven wheel pivotally supported at the other end, and a reduction gear installed on the lower frame. It was constructed by interlocking and connecting the attached motor and the drive wheel.

In such a conventional configuration, a long and large lower frame on which drive wheels and driven wheels are pivoted and a motor with a reduction gear that drives the drive wheels is installed is transported to the site and the crane is assembled, or It is necessary to install the drive wheels and driven wheels on the lower frame on-site, as well as the motor with a reduction gear that drives the drive wheels. Since it has to be transported to the site, the transportation cost is high, and in the latter case, the assembly work at the site requires a great deal of effort and time.

(Means for Solving the Problems) The present invention proposes a traveling crane for loading and unloading that can solve the conventional problems as described above, and its characteristics are as follows:
A traveling drive unit is detachably attached to one end of the lower frame, and a driven wheel unit is detachably attached to the other end of the lower frame.
The traveling drive unit has a machine frame that is detachably attached to the lower frame, and supports horizontally the output shaft of a motor with a reduction gear located on one left and right side of the machine frame, and also supports the output shaft of a motor with a reduction gear laterally. A driving wheel is attached, and a rotation preventing coupling means for preventing the motor with a reduction gear from rotating around the output shaft is interposed between the motor with a reduction gear and the machine frame, and the driven wheel is mounted on the driven wheel. The unit has a driven wheel pivotally supported on the same machine frame as the machine frame of the traveling drive unit.

(Example) An example of the present invention will be described below based on the attached illustrative drawings.

In FIG. 1, 1 is a lower frame, a driving drive unit 2 is attached to the front end, and a driven wheel unit 3 is attached to the rear end. 4 is an upper frame, and 4 is an upper frame. The frame 1 includes a pair of front and rear supports 5a,
5b, and the pair of front and rear columns 5a,
An elevating carriage 6 is disposed between Sb. Load transfer means 7 such as a running fork is mounted on this elevating carriage 6. Reference numeral 8 denotes an elevating drive unit installed on the upper side of the front end of the lower frame 1, and two chinos 10a and 10b for suspending the elevating carriage 6 are hooked to the driving gear wheel 9 of the elevating drive unit. A counterweight 11 is connected to the free ends of the two chinos 10a and 10b, and moves up and down within the front support column 5a.

Reference numerals 12 are guide gear wheels of the chains 10a and 10b, respectively.

As shown in FIGS. 2 to 4, the traveling drive unit 2 includes a machine frame 13 and drive wheels 1 pivotally supported within the machine frame 13.
4, and a motor 16 to which a reduction gear 15 is directly connected. The machine frame 13 includes a pair of left and right side plates 17, a pair of left and right mounting plates 18 connected to the front ends of the side plates 17, a connecting plate 19 that connects the rear ends of the side plates 17 to each other, and the It is composed of a connecting plate 20 that connects the plates 18 with numbers to each other, and the output shaft of the motor 16 with a reducer, that is, the output shaft 21 of the reducer 15 is oriented horizontally between the two sides Fi and 17. The drive wheel 14 is mounted on the output shaft 21 between the side plates 17.

The speed reducer 15 is located on one left and right side of the machine frame 13, and the motor 16 is vertically connected to the speed reducer 15.
One side of the speed reducer 15 and the mounting plate 1B on the same side are connected by an L-shaped torque arm 22 as a rotation-preventing coupling means for preventing rotation around the center. Reference numeral 23 denotes a pair of right and left steady rest guide rollers, which are pivotally supported on the lower side of both side plates 17 of the machine frame 13 via a vertical support shaft.

In the traveling drive unit 2 configured as described above, the lower frame 1
It is removably attached to a mounting plate 24 attached to the front end of the frame using a plurality of bolts and nuts 25.

The driven wheel unit 3 is a machine frame 2 having exactly the same structure as the machine frame 13 of the traveling drive unit 2, as shown in FIG.
6, a driven wheel 27 pivotally supported between both side plates 17 of this machine frame 26, and a pair of left and right guide rollers 28 for steady rests pivotally supported on the lower side of both side plates 17 by vertical support shafts. The number plate 18 of the machine frame 26 is removably attached to a mounting plate 29 attached to the rear end of the lower frame 1 with a plurality of bolt nuts 30.

The traveling crane for loading and unloading configured as described above has driving wheels 14 and driven wheels 27 mounted on guide rails 31 laid on the floor along the travel route as shown in the figure, and also has front and rear wheels. The steady rest guide rollers 23 and 28 are set on the travel path so as to sandwich the guide rail 31 from both left and right sides. Although not shown, the upper frame 4
A vertical shaft roller for steady rest is pivotally supported on the shaft, and this engages with the ceiling side guide rail 32.

When this crane is run, the motor 16 in the drive unit 2 is operated, and its rotation is reduced by the reducer 15 and transmitted to the output shaft 21, causing the drive wheels 14 to rotate forward or reverse. At this time, a reaction force acts on the reducer 15 and the motor 16 in the opposite direction around the output shaft 21, but the reaction force is not received by the machine frame 13 via the torque arm 22. .

(Operations and effects of the invention) As described above, according to the traveling crane for loading and unloading of the present invention,
To install the crane, it is sufficient to transport the lower frame without the traveling drive unit or driven wheel unit attached to the site, which can reduce transport costs compared to transporting the lower frame with these attached. .

Moreover, when assembling on-site, the machine frame of the traveling drive unit to which the drive wheel and the motor with reducer have already been installed at the factory, and the driven wheel to which the driven wheel has been pivoted at the factory Since the machine frame of the unit can be attached to both the front and rear ends of the lower frame, this work can be done easily and quickly.

In addition, the motor with a speed reducer in the travel drive unit is supported by the machine frame via its output shaft, and the two are connected by a coupling means for preventing rotation, so that it is easy to install the motor with a speed reducer on the machine frame. The structure and the transmission structure between the motor with a speed reducer and the drive wheels are extremely simple, and the traveling drive unit can be made lighter and smaller. As a result, the frame of the drive unit can be made small and simple, and the same frame can be used as the frame of the driven wheel unit. However, since the machine frame of the travel drive unit and the machine frame of the driven wheel unit are constructed in the same way, it is possible to reduce the cost of both units, and furthermore, both units can be used for different types of cranes. Various effects can be expected, such as being able to replace the unit or replacing it in units.

[Brief explanation of the drawing]

Figure 1 is a side view of the entire crane, Figure 2 is a side view of the traveling drive unit, Figure 3 is a plan view of only the traveling drive unit, and Figure 4 is a rear view of the traveling drive unit. , FIG. 5 is a side view of the driven wheel unit portion. 1... Lower frame, 2... Traveling drive unit,
3... Driven wheel unit, 4... Upper frame, 5
a, 5b... Support, 6... Lifting carriage, 8...
・Drive unit for raising and lowering the carriage, 10a, 10b...
・Chain for driving the carriage up and down, 13.26...Machine frame, 14...Drive wheel, 15...Reducer, 16...
Motor, 21... Output shaft, 22... Torque arm, 23. 28... Steady rest guide roller, 24.
29... Mounted plate, 27... Driven wheel.

Claims (1)

[Claims] A traveling crane for loading and unloading warehouses, in which a lower frame and an upper frame are connected by a column, and a lifting carriage is provided that goes up and down along the column, and a traveling drive unit is provided at one end of the lower frame, and a traveling drive unit is provided at the other end. Driven wheel units are each removably attached to the machine frame, and the traveling drive unit is attached to a machine frame that is detachably attached to the lower frame, and an output shaft of a motor with a reducer located on one left and right side of the machine frame. A drive wheel is attached to the output shaft, and a rotation preventing coupling means for preventing the motor with a reduction gear from rotating around the output shaft is connected to the motor with a reduction gear and the machine frame. The driven wheel unit is interposed between the driven wheel unit and the driven wheel unit, and the driven wheel is pivotally supported on a machine frame that is the same as the machine frame of the traveling drive unit.