JPH05116886A - Liftable hoist for carried article - Google Patents

Abstract

PURPOSE:To minimize a traveling space by turning both hangers when no carried articles are hoisted outwards and upwards after moving them to a clearance limit, and making projection amount downward zero or reducing it largely while the hangers do not hoist nor carry carried articles. CONSTITUTION:There are provided a pair of hangers 18a, 18b whose clearance is variable between each other in a horizontal passage, a hanger driving means 26 which moves the hangers 18a, 18b so as to vary the clearance, and posture change means 27 in parallel to each other which turn the hangers 18a, 18b outwards and upwards when the hangers 18a, 18b move to the clearance limit. It is thus possible to minimize the traveling space by making the lower end level of the whole carrier device higher when hangers which can hoist carried articles of various width do not hoist nor carry any carried article though the hangers are used.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for suspending an object to be transported, which is suspended by a plurality of suspending devices which can be wound up and taken out by a suspension elevating drive means provided in a transportation train, The present invention relates to a transported object suspending device including a pair of hangers that can move toward and away from each other in a horizontal path, and a hanger driving unit that moves the hangers toward and away from each other.

[0002]

2. Description of the Related Art In this type of transported object suspending device, the lower ends of the pair of hangers are at the lower end level of the transported object suspending device. Therefore, when the transported object is not suspended, the traveling space can be reduced by raising the hanger to raise the lower end level of the transported object suspending device. In the device for suspending a transported object, the transported object is suspended unless the device is a type in which the bases of the hangers are rotatably supported so as to open and close the hanger when loading and unloading the transported object. It was not possible to open both hangers outwards and raise the lower end level of the suspension device when not in use.

In other words, in a device for suspending a transported object of a type in which a pair of hangers are supported so as to be movable toward and away from each other in a horizontal path so that transported objects of various sizes (widths) can be suspended. Since both hangers are in the suspending posture even when the transported object is not suspended, it was not possible to raise the lower end level of the suspending device to reduce the traveling space.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and its features will be shown by the reference numerals of the embodiments described later. The apparatus for suspending an object to be lifted according to the present invention is a device for suspending an object to be suspended, which is suspended by a plurality of suspending tools 15 of a suspending elevator driving means 9 provided on a transport train 2. In the lower device, a transported object suspending device comprising a pair of hangers 18a, 18b capable of moving toward and away from each other in a horizontal path, and a hanger driving means 26 for moving the hangers 18a, 18b toward and away from each other, It is characterized in that a posture changing means 27 is additionally provided for tilting the pair of hangers 18a, 18b outward and upward when the pair of hangers 18a, 18b has moved to the separation limit.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. In FIGS. 1 and 2, reference numeral 1 is a guide rail which is erected at an appropriate height and has a substantially C-shaped vertical section. Reference numeral 2 is a transportation train supported by the guide rail 1 so as to be able to travel. In this transport train 2, one traveling drive wheel 3 which is loosely fitted in the guide rail 1 and rolls on the lower horizontal rail portion 1a of the guide rail 1, and the front and rear of the traveling drive wheel 3 are provided. A vertical shaft roller 4 for steering which sandwiches a pair of upper and lower vertical rail portions 1b and 1c of the guide rail 1 on both sides, and a lower horizontal rail portion 1a of the guide rail 1 on both front and rear sides of the traveling drive wheel 3.
A pair of front and rear horizontal shaft rollers 5 that come into contact with the lower side surface, a lateral direct drive motor 6 that directly connects the traveling drive wheels 4 to an output shaft, and a front and rear pair disposed on both front and rear sides of the traveling drive wheels 3. The current collecting unit 7 is provided. Reference numeral 8 is a frame of the transportation train 2, and the rollers 4 and 5 are pivotally supported by the frame 8.
The motor 6, the current collecting unit 7, and the cover plate 2 a of the electric train 2 are supported by the frame 8.

Reference numeral 9 is a suspension elevating / lowering driving means, which is a direct drive motor 10 arranged in parallel at a proper distance on the running direction side of the motor 6 at substantially the same level as the motor 6, and both the motors 6 and 6. It is provided with four hanging tool winding and unwinding rotating bodies 11 which are arranged in parallel in the left-right lateral direction at a lower middle position of 10. The suspension 11 for winding and unwinding the suspension is fixed to one drive shaft 12 which is laterally supported on the frame 8 of the transport train 2.
The drive shaft 12 is operatively connected to the motor 10 via a drive toothed wheel 13 attached to one end and a transmission gear 14 fixed to the outer end of the rotor of the direct drive motor 10.

[0007] A suspension tool (belt) 15 is wound around each of the four suspension tool winding and unwinding rotary members 11 with their inner ends being fixed. Via a guide pulley 16 pivotally supported by the frame 8 of the transport train 2, the transport train 2 is hung from the front left and right two places and the rear end left and right two places.

Reference numeral 17 is a device for suspending an object to be conveyed, which comprises a pair of front and rear hangers 18a and 18b. As shown in FIGS. 3 to 5, the pair of hangers 18a and 18b includes a rotating shaft 21a that is laterally supported by brackets 20a and 20b that are continuously provided from below the outer ends of a pair of front and rear movable bases 19a and 19b. , 21b have their upper ends fixed. On the other hand, the movable bases 19a and 19b are supported by a pair of left and right guide rails 23 attached to a frame 22 of the suspension device 17 so as to be movable toward and away from each other in a horizontal path in the front-rear direction.

As shown in FIG. 3, each of the hangers 18a and 18b has an action posture A in which stoppers 24a and 24b, which are connected to the hangers 18a and 18b, abut the movable bases 19a and 19b and hang down substantially downward. As shown by the solid line in FIG. 4, it can swing back and forth around the rotary shafts 21a and 21b between the tilted posture B which is rotated upward and outward, and as shown in FIG. A torsion coil spring 25 that urges the hangers 18a and 18b in the acting posture A by urging the hangers 18a and 18b in the acting posture A is provided around the rotary shafts 21a and 21b. 18
It is interposed between b and the movable bases 19a and 19b.

Reference numeral 26 is a hanger driving means, and 27 is a hanger attitude changing means. These two means 26, 27 are related to each other, and both the movable bases 19a, 1
A drive chain 30 hung in an eight-shape between guide toothed wheels 28 and 29 axially supported by the frame 22 at both ends of a horizontal path along which 9b moves, an output shaft 31a which is installed above one end of the frame 22. A motor 31 for rotating the drive chain 30 in any forward and reverse directions by a drive toothed wheel 32 attached to the drive toothed wheel 30 and two points 30a and 30b of the drive chain 30 which move in opposite directions to each other on the lower side of the tooth wheel. The rotating shafts 21a, 2 of the two hangers 18a, 18b so that
1b, respectively, driven toothed wheels 33a, 33b, and guide toothed wheels 34a, 34b pivotally supported on the movable bases 19a, 19b so as to assist the engagement of the drive chain 30 with the driven toothed wheels 33a, 33b. , And a guide toothed wheel 35 axially supported on the frame 22 side so as to assist the engagement of the drive chain 30 with the drive toothed wheel 32.

In the transporting device configured as described above, the traveling drive motor 6 is operated by the electric power supplied from the power supply line 36 (see FIG. 2) laid on the guide rail 1 through the current collecting unit 7, By rotationally driving the traveling drive wheels 3, the transport train 2 can be self-propelled along the guide rails 1. When loading and unloading the transported objects W, the transport train 2 is stopped at the transported object unloading position, and the motor 10 of the suspension elevating / lowering drive means 9 is driven by the power feeding line 3.
6 is operated by the electric power supplied from the power collection unit 7 and its rotational force is transmitted to the four hanging tool winding / unwinding rotary bodies 11 via the transmission gear 14, the drive gear 13, and the drive shaft 12. Then, the rotating body 11 is rotationally driven in the hanging tool feeding direction, and the four hanging tools 15 are paid out to lower the carried object hanging device 17 to the carried object loading / unloading level. Then, the hangers 18a and 18b are moved closer to each other at the loading / unloading level.

That is, as shown in FIG. 3, the drive gear wheel 32 is rotated in the forward rotation direction (clockwise direction in the figure) by the motor 31 of the hanger drive means 26, whereby the drive chain 30 is moved.
Two places 30a, 30b engaging with the movable bases 19a, 19b
Rotate so that they approach each other. As a result, the driven gear wheels 33a, 33b integral with the hangers that engage with the two chains 30a, 30b tend to rotate clockwise in the figure, but rotation in the same direction causes the hangers 18a, 18b to rotate.
Side stoppers 20a, 20b are movable bases 19a, 19b.
Since it is abutted against and is blocked by the two chains 30
The movement of the a and 30b toward each other is transmitted to the hangers 18a and 18b and the movable bases 19a and 19b as they are, and the hangers 18a and 18b and the movable base 1 are transmitted.
The 9a and 19b are guided by the guide rail 23 and move in a direction in which they approach each other.

When the hangers 18a and 18b in the working posture A move closer to each other, and when the hangers 18a and 18b reach a position where the object W can be lifted as shown in the figure, the motor 31 is used. The normal rotation drive of the drive chain 30 is stopped, and the brake attached to the motor 31 is operated. After that, the four hanging-up tool winding / unwinding rotary bodies 11 are rotationally driven in the hanging-up tool winding direction to wind up the four hanging-up tools 15 to set the transported object hanging device 17 to the transport train 2. The object W to be transported is lifted to the hanger 18a,
It is hung up on 18b.

Hangers 18a of the object suspending device 17
When the transported object W suspended by 18b is transported to a predetermined location by the traveling of the transport train 2, the transported object suspension device 17 is lowered to the transported object unloading level as described above, and the transported object W is transported. After the object W is transferred onto the carrier or conveyor, the hangers 18a and 18b are moved away from each other.

That is, the drive gear wheel 32 is rotated in the reverse direction (counterclockwise in the figure) by the motor 31 of the hanger drive means 26 as shown in FIG.
At two points 30a, 3 which engage with the movable bases 19a, 19b.
0b are rotated in a direction in which they are separated from each other. As a result, the driven gear wheels 33a, 33b integrated with the hangers that engage with the two chains 30a, 30b tend to rotate counterclockwise in the figure, but rotation in the same direction causes the hanger 18a,
Since it is blocked by the biasing force of the torsion coil springs 25a and 25b (see FIG. 5) that holds 18b in the working posture A, and the sliding resistance of the movable bases 19a and 19b in the separating movement direction is smaller, it is driven. Without the tooth wheels 33a, 33b rotating counterclockwise, the two chains 30a,
The movements of the 30b in the directions away from each other are directly transmitted to the hangers 18a, 18b and the movable bases 19a, 19b. Therefore, the two hangers 18a and 18b move in the direction in which they are separated from each other while being guided by the guide rail 23 together with the movable bases 19a and 19b while being held in the working posture A by the springs 25a and 25b.

After the movable bases 19a and 19b reach the separation limit position as shown in FIG. 5, when the drive chain 30 is further continuously rotated in the reverse direction, the two locations 30a and 30b of the drive chain 30 are driven. The toothed wheels 33a and 33b are rotationally driven counterclockwise against the biasing force of the torsion coil springs 25a and 25b. As a result, both hangers 18a and 18b integrated with the driven toothed wheels 33a and 33b.
Is rotated outward and upward about the rotary shafts 21a and 21b to switch from the working posture A to the tilting posture B. If both hangers 18a and 18b are switched to the tilted posture B,
The reverse drive of the drive chain 30 is stopped.

Since the hangers 18a and 18b are separated from the transported object W by moving them away from each other, the working stance A of the hangers 18a and 18b can be kept at the separation limit.
The operation of switching from the tilted posture B to the tilted posture B can also be performed after raising the transported object suspension device 17 to the ascending limit level close to the bottom of the transport train 2. Whatever it is,
Since the carried object suspending device 17 is lifted to the ascending limit level and both hangers 18a and 18b are in the tilted posture B at the separated limit position, the carried object suspending device 1 is provided.
7 and both hangers 18a, 18b can be housed in the cover plate 2a of the transport train 2 as shown by the phantom lines in FIG. Assuming that the hanger 1 is in the tilted posture B like this.
Even if 8a, 18b cannot be accommodated in the cover plate 2a of the transport train 2, the lower end level of the entire transport device including the transported object suspension device 17 is set to the lower end level of the hangers 18a, 18b in the working posture A. It is possible to make the level of the bottom surface of the transported object suspension device 17 higher than that.

[0018]

As described above, according to the apparatus for suspending an object to be lifted and lowered according to the present invention, a hanger of a type that can be moved toward and away from each other in a horizontal path, and thus an object to be transferred having various widths. While using a hanger of a type that can suspend, both hangers when the transported object is not suspended are moved to the separation limit and then tilted upward by the posture changing means,
The amount of downward projection from the transported object suspension device can be reduced to zero or greatly reduced. Therefore, the traveling space can be reduced by raising the lower end level of the entire transport device when the transported object is not suspended and transported, so that various equipment can be installed in a building with a low ceiling or on the floor. Even in places where it is not possible to secure a sufficient height in the space above it,
It is possible to easily configure the return path of the transfer device.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional side view in a state where a transported object suspension device is lowered.

FIG. 2 is a front view in vertical section at a position showing a traveling drive means of a transportation train.

FIG. 3 is a vertical cross-sectional side view showing a state in which a hanger of the transported object suspending device is moved closer to one another.

FIG. 4 is a vertical cross-sectional side view showing a state in which the hanger is moved apart and switched to a tilted posture.

5 is a cross-sectional plan view of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Guide rail 2 Transport train 3 Travel drive wheels 6 Travel drive motor 9 Suspension lifting drive means 10 Suspension lift drive motor 11 Suspension tool winding / unwinding rotary body 15 Suspension tool (belt) 17 Transferred Object suspension device 18a, 18d Hanger 19a, 19b Movable stand 21a, 21b Rotating shaft 23 Guide rails 24a, 24b Stopper 25a, 25b Twisting coil spring 26 Hanger driving means 27 Hanger attitude changing means 30 Driving chain 31 Motor 32 Driving teeth Wheel 33a, 33b Driven tooth ring

Claims (2)

[Claims] 1. A transported object suspending device suspended from a plurality of suspending devices capable of winding and unwinding by suspending / lifting driving means provided on a transport train. In a device for suspending an object to be transported, which comprises a pair of movable hangers and a hanger driving means for moving the hangers toward and away from each other, when the pair of hangers moves to a separation limit, the pair of hangers moves outward and upward. A device for suspending and lowering a transported object that is equipped with a posture changing device that tilts it down. 2. A pair of hangers can swing on a pair of movable bases supported by guide rails so as to move toward and away from each other, between a hanging posture and a tilting posture toward the upper side. And is urged by a spring so as to maintain the acting posture, and the hanger driving means is stretched between both ends of the moving paths of the movable bases, and has two positions that move in opposite directions. It is composed of a drive chain that is respectively locked to both the movable bases and a motor that rotates the drive chain in any of forward and reverse directions, and the attitude changing means is concentric with the swing axis of each hanger. It is composed of toothed wheels that are fixed to each hanger and that engage with the drive chain, and the hanger moves from the working posture through the toothed wheels by the rotation of the drive chain after the movable bases have been separated to the separation limit. Turn to tilted position Was set to be allowed, liftable objects to be conveyed suspended device according to claim 1.