JPH0753502B2 - Relay transfer device for carrier vehicles - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a relay transfer device for a carrier truck that carries various types of luggage.

[Conventional technology]

Conventionally, as a relay transfer device for a carrier vehicle, a fixed frame extending in the front-rear direction is arranged between two rails for traveling the carrier vehicle extending in the front-rear direction, and the fixed frame is provided at a front end portion and a rear end portion of the fixed frame. , A drive sprocket and a driven sprocket rotated by a drive device are attached, and an endless chain wound around the drive sprocket and the driven sprocket is engaged with a forward driven engagement member provided at the front and rear of the carriage. There is known a relay transfer device in which a large number of drive engaging members are attached at regular intervals in the longitudinal direction of the chain.

[Problems to be Solved by the Invention]

In the case of the conventional relay transfer device for a carrier vehicle, after the forward driven follower engaging member in the carrier vehicle forwardly transferred by the relay carrier device is disengaged from the drive engaging member of the endless chain, It travels for a certain distance and then stops, but because the traveling distance due to inertia differs depending on the traveling speed of the carrier truck by the relay transfer device and the size of the load placed on the transport carrier, it was transferred by the relay transfer device. The stop position of the carrier changes.

When the stop position of the transfer carriage transferred by the relay transfer device is changed in this way, when the transfer carriage is next moved forward by the drive carriage having the lower engaging member, the drive carriage is fixed in the traveling direction of the transfer carriage. Even if the lower engaging member of the drive carriage is moved upward while stopped at the position, the upper engaging portion of the lower engaging member cannot be fitted to the upper engaging member provided on the transport carriage. .

For this reason, in order to fit the lower engagement member of the drive carriage to the upper engagement member of the transport carriage, it is necessary to perform the alignment operation of the drive carriage, which complicates the driving operation and causes the transport carriage to perform the transfer. There is a problem of reduced efficiency.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a relay transfer device for a carrier truck that can advantageously solve the above problems.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, in the relay transfer device for a carrier truck according to the present invention, a movable frame 2 extending in the front-rear direction is arranged between two rails 1 for traveling the carrier truck extending in the front-rear direction, The rear bridge portion of the movable frame 2 is pivotally attached to the upper portion of the rear support base 3 by a pivot 4 extending in the left-right direction, and is driven by a drive device 5 at the front end portion and the rear end portion of the movable frame 2. A sprocket 6 and a driven sprocket 7 are mounted, wound around the drive sprocket 6 and the driven sprocket 7, and engaged with an endless chain 8 by a driven follower engagement member 10 provided at a front portion and a rear portion of a carrier truck 9. A large number of drive engaging members 11 are attached at regular intervals in the longitudinal direction of the chain, and the front end of the movable frame 2 is attached to a lifting support device 13 provided on a front support base 12. Ri is vertically movably supported.

〔Example〕

 The present invention will now be described in detail with reference to the illustrated example.

The drawings show one embodiment of the present invention, in which two rails 1 for traveling a carrier extending in the front-rear direction are arranged at intervals in the left-right direction, and the lower flange of the rail 1 has a support beam 14 Mounted on the base plate and fixed by bolts, and the upper ends of a large number of columns 15 are fixed to the lower part of the support beam 14 by bolts, and the lower part of the column 15 is fixed to the floor 16 by anchor bolts. 17 is mounted on the rail 1.

At the center of the rear part between the two rails 1 for running the carriage,
A movable frame 2 extending in the front-rear direction is arranged, and a rear end portion of the movable frame is pivotally attached to an upper part of the rear support base 3 by a pivot shaft 4 extending in the left-right direction, and a front end side of the movable frame 2 is provided. A drive unit 5 composed of a speed reducer and an electromagnetic brake is fixed to the lower portion, and a driven sprocket 19 and two drive sprockets 6 are fixed to a rotary shaft 18 rotatably attached to the front end of the movable frame 2. An endless transmission chain 21 is wound around the driven sprocket 19 and the drive sprocket 20 fixed to the output shaft of the drive unit 5.

Two driven sprockets 7 are fixed to a driven shaft 22 rotatably attached to the rear end of the movable frame 2, and the two drive sprockets 6 and the two driven sprockets 7 are fixed.
The two endless chains 8 are wound around, and a large number of drive engaging members 11 extending in the left-right direction are arranged at regular intervals in the chain longitudinal direction between the endless chains 8 and Both ends of the member 11 are connected to an endless chain 8, and when the drive device 5 is operated, the endless chain 8 having a large number of drive engaging members 11 attached thereto is circulatively driven in the direction of arrow A in FIGS. 1 and 2. It Further, the roller 32 rotatably fitted on the link connecting shaft 34 of the endless chain 8.
Is a guide rail 33 fixed to the upper part of the movable frame 2.
It is placed in.

The front support 12 disposed below the front end of the movable frame 2 is fixed to the middle portion of the holding beam 23 extending in the left-right direction by welding or the like, and both ends of the holding beam are struts.
The cam drive device 24, which is fixed to the front support base 12 and includes a reduction gear of the front support base 12 and an electric motor with an electromagnetic brake, is fixed.
A worm gear 26 rotatably supported by a bearing fixed to the output shaft of the cam drive device 24 is meshed with a worm wheel 27 fixed to the rotary shaft 25.

An eccentric ascending movement cam 28 is fixed to the rotating shaft 25, an upper limit stop striker 29 and a lower limit stop striker 30 are fixed, and the front support 12 is fixed by an upper limit stop striker 29. The upper limit stop switch LS1 to be operated and the lower limit stop switch LS2 to be operated by the lower limit striker 30 are fixed, and a plurality of support rollers 31 extending in the left-right direction are provided at the lower front end of the movable frame 2. The support rollers 31 are arranged side by side in the front-rear direction with the cam 28, and the support rollers 31 are rotatably fitted on a support shaft attached to the lower front end of the movable frame 2.

A lifting / lowering support device 13 is configured by a lifting / lowering movement cam 28 that is rotated by the cam driving device 24 via a worm gear 26 and a worm gear 27. When the cam driving device 24 is normally rotated, the cam 28 is normally rotated. The cam 28 pushes up the front part of the movable frame 2 via the supporting roller 31, that is, the movable frame 2 is rotated upward about the rear end pivot 4 by a certain angle, and the length of the cam 28 is increased. When the radius portion reaches just above the rotary shaft 25, that is, when the upper straight portion of the endless chain 8 becomes horizontal, the upper limit stop striker 29 operates the upper limit stop limit switch LS1 and the limit switch LS1. Signal, stops the positive rotation motion of the cam drive device 24.

Further, when the cam 28 is reversely rotated by the reverse rotation operation of the cam driving device 24, the long radius portion of the cam 28 rotates downward, so that the cam 28 is supported by the supporting roller 31 via the supporting roller 31. The front portion of the movable frame 2 descends, that is, the movable frame 2 is rotated downward about the pivot 4 at the rear end by a certain angle, and the long radius portion of the cam 28 is rotated.
When it reaches just below 25, the lower limit stop striker 30 operates the lower limit stop limit switch LS2, and the reverse rotation motion of the cam drive device 24 is stopped by the signal of the limit switch LS2.

Seat plates 36 are fixed to the front and rear parts of the center of the vehicle body 35 of the carrier truck 9 in the width direction by welding, and front and rear supporting brackets 37 and 38 are attached to the front and rear sides of the seat plate 36 by bolts 39.
To form a support member 40, and the front portion of the forward driven follower engaging member 10 is pivotally attached to the front support fitting 37 of the support member 40 by a horizontal shaft 41 extending in the left-right direction, and The rear part of the backward driven engagement member 42 has a horizontal axis extending in the left-right direction with respect to the rear support fitting 38 of the support member 40.
It is pivotally connected by 43.

On the upper horizontal plate of the front support bracket 37, a driven engagement member lowering stop stopper 44 made of a bolt is screwed at a position facing the front end upper portion of the forward drive driven engagement member 10, and is engaged with the stopper 44. Is a lock nut 45 which is press-contacted to the horizontal plate of the front support bracket 37 and is screwed into the upper horizontal plate of the rear support bracket 38 at a position facing the rear end upper part of the backward driven engagement member 42. The stopper 4 for stopping the descending movement of the driven engaging member, which is a bolt, is screwed together, and the stopper 46 is screwed with a lock nut 47 that is pressed against the horizontal plate of the rear support fitting 38.

The forward driven follower engaging member 10 is rotated by its own weight so that the rear portion is lowered, and when the forward driven follower engaging member 10 is rotated until the upper end of the front end thereof abuts on the stopper 44, the forward drive follower engaging member 10 is moved. The rear end of 10 is arranged so as to face the front of the drive engagement member 11. Further, the backward driven engagement member 42,
When the front portion of the backward driven engaging member 42 is rotated by its own weight so that the upper portion of the rear end of the backward driven engaging member 42 hits the stopper 46, the front end of the backward driven engaging member 42 is driven and engaged. It is arranged so as to face the rear part of the member 11.

A holding member 48 is fixed to the front end side of the movable frame 2,
A photoelectric switch that emits upward light above the holding member 48
When the photoelectric switch 49 detects the rear end of the vehicle body 35 of the carrier 9, the drive device 5 is stopped by the signal of the photoelectric switch 49, and the cam drive device 24 operates in the reverse rotation. Then, the front portion of the movable frame 2 is lowered.

The wheels of a traverser 51 equipped with a drive device for traveling are placed on a traverser rail 50 extending in the left-right direction, and two bearing rails 52 extending in the front-rear direction are fixed to the upper part of the traverser 51. The two bearing rails 52 are the same as the above 2
They are arranged at equal intervals and at the same level as the rails 1 for running the book carrier. Further, a carrier carriage transfer device 53 extending in the front-rear direction is fixed to the upper part of the traverser 51 at the center of the two bearing rails 52. Endless chain 55 wrapped around
And a large number of pressing engagement members 56 mounted at intervals in the longitudinal direction of the endless chain 55.

A drive carriage traveling rail 57 extending in the front-rear direction is fixed on the floor below the two transport carriage traveling rails 1, and the wheels of the transport carriage traveling drive carriage 58 are fixed to the rails 57.
The driving carriage 58 is provided with a lower engaging member 60 which is moved up and down by an elevating driving device and a traveling driving device, and an engaging portion 61 is provided on the upper end of the lower engaging member 60. Is provided, and an upper engaging member 62 made of a cylindrical body extending in the left-right direction is arranged in the lower center of the vehicle body 35 of the transport carriage 9. The upper engaging member 62 is a horizontal shaft attached to the vehicle body 9. It is rotatably fitted in 63.

When the carriage 9 placed on the bearing rails 52 of the traverser 51 is moved forward through the relay transfer device, the traverser 51 is traversed to a position where the bearing rails 52 are aligned with the rails 1 for carrying carriages. Then, the endless chain 55 of the transfer vehicle transfer device 53 and the endless chain 8 of the relay transfer device are circularly driven to support the transfer vehicle 9 on the bearing rails.
After moving from 52 to the rail 1 for traveling the carriage, and then moving the carriage 9 forward to a certain position, the operation of the drive device 5 in the relay transfer device is stopped, and the carriage 9 is stopped.
Stop at a fixed position.

Next, the lower engagement member 60 of the drive carriage 58 stopped at the fixed rear end position is moved upward, and the engagement portion 61 of the lower engagement member 60 is fitted into the upper engagement member 62 of the transport carriage 9. After combining,
The movable frame 2 is rotated downward to disengage the drive engagement member 11 from the driven engagement member 10, and then the drive carriage 58 is caused to travel forward, whereby the transport carriage 9 is moved forward.

When the transport carriage 9 is moved backward, the drive carriage 58 is moved backward while the lower engaging member 60 of the drive carriage 58 is fitted to the upper engaging member 62 of the transport carriage 9.
The transport carriage 9 is moved backward toward the relay transfer device, and when the drive carriage 58 reaches the rear end position, that is, the rearward driven engagement member 42 at the rear of the transport carriage 9 reaches the upper portion of the relay transfer device. At this time, the drive carriage 58 is stopped at the rear end position.

Next, the lower engaging member 60 is moved downward to disengage it from the upper engaging member 62 of the transport carriage 9, and the movable frame 2 is rotated upward so as to be in a horizontal state. The endless chain 55 of the transfer vehicle transfer device 53 is circularly driven in the backward transfer direction to support the transfer vehicle 9 on the support rail 52.
Run backwards to the top.

[Object of the Invention]

Since the present invention is configured as described above, it has the following effects.

With the upper straight portion of the endless chain 8 having a large number of drive engagement members 11 being horizontal, the endless chain 8
Of the endless chain 8 when the transport carriage 9 is forward-moved to a predetermined position by circulatingly driving the transport carriage 9 through the drive engagement member 11 and the forward-moving driven engagement member 10. The circulation drive is stopped, and then the lowering operation of the lifting / lowering support device 13 causes the movable frame 2 to rotate downward about the pivot 4 at the rear end of the movable frame 2, thereby stopping the transport carriage 9 at a predetermined position. After that, the drive engagement member 11 of the relay multi-feed device can be removed from the forward driven engagement member 10 of the transport carriage 9, so that the transport carriage traveling drive carriage 58 is stopped at a predetermined position. The lower engaging member 60 of the drive carriage 58 is replaced with the upper engaging member 62 of the transport carriage 9.
Since the transport carriage 9 can be caused to travel forward by the drive carriage 58, the transport efficiency of the transport carriage 9 can be improved.

[Brief description of drawings]

The drawings show an embodiment of the present invention, in which FIG. 1 is a partially longitudinal side view showing a state in which a carrier is being transferred by a relay transfer device, and FIG. 2 is a part of FIG. FIG. 4 is a partially cutaway vertical front view showing a state in which a carrier is being transferred by a relay transfer device.
FIG. 5 is a partially cutaway plan view of the relay transfer device, FIG. 5 is a plan view showing the relationship between the relay transfer device, the traverser, and the drive carriage for transporting the carriage, and FIG. 6 is a drive engagement member of the endless chain and the transport carriage. A vertical sectional side view showing an engaged state with a driven engaging member of
7 is a sectional view taken along the line BB of FIG. 6, FIG. 8 is a partially cutaway vertical side view showing a state in which the driving engagement member is disengaged from the driven engagement member, and FIG. Plan view of the carrier, No. 10
FIG. 11 is a partially vertical front view showing the relationship between the transport carriage and the drive carriage for traveling the transport carriage, and FIG. 11 is a vertical side view showing a state in which the upper engagement member of the transport carriage is fitted with the lower engagement member of the drive carriage. It is a figure. In the figure, 1 is a rail for traveling a carriage, 2 is a movable frame, 3 is a rear support, 4 is a pivot, 5 is a drive device, 6 is a drive sprocket, 7 is a driven sprocket, 8 is an endless chain, and 9 is a carriage. , 10 is a driven engagement member for forward movement, 11 is a drive engagement member, 12 is a front support base, 13 is a lifting support device, 14
Is a support beam, 15 is a pillar, 17 is a wheel, 18 is a rotation shaft, 22 is a driven shaft, 24 is a cam drive device, 25 is a rotation shaft, 28 is a lifting cam, 31 is a support roller, 41 is a horizontal shaft. , 44 is a stopper, 58
Is a drive vehicle for traveling the transport vehicle, 60 is a lower engaging member, 61 is an engaging portion, and 62 is an upper engaging member.

Claims (1)

[Claims] 1. A movable frame 2 extending in the front-rear direction is arranged between two rails 1 for traveling a carrier truck extending in the front-rear direction, and a rear end portion of the movable frame 2 has a rear support base 3.
Of the movable frame 2, a drive sprocket 6 and a driven sprocket 7 which are rotated by a drive device 5 are attached to a front end and a rear end of the movable frame 2, respectively. 6 and the driven sprocket 7 are wound around the endless chain 8, and a large number of drive engagement members 11 are engaged with the forward movement driven engagement members 10 provided at the front and rear portions of the transport carriage 9.
Is a relay transfer device for a carrier truck, which is mounted at regular intervals in the longitudinal direction of the chain, and the front end of the movable frame 2 is supported by a lifting support device 13 provided on a front support 12 so as to be lifted and lowered.