JPH058043Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a pallet locking device for fixing pallets in a station used in a conveyance system or the like.

[Prior art]

Conventionally, the means for locking a pallet is to detect when the pallet has reached a predetermined position, actuate an actuator attached to each station, and attach a pin attached to the tip of the actuator to a recess formed at the lower end of the pallet. It is done by inserting and locking the device.

[Problem that the invention attempts to solve]

As mentioned above, since the detectors and actuators are attached to each station, a large number of detectors and actuators are required, depending on the scale of the transport system. Therefore, the capacity of the power supply connected to these devices may be insufficient, and the number of electrical wires that will be needed to connect these detectors and actuators will increase, resulting in an increase in the number of electrical wires to be used, their locations, etc., and the installation work will become extremely troublesome. There was a problem.

〔the purpose〕

The present invention aims to eliminate the above-mentioned problems by mechanically interlocking the operation of the locking mechanism with the movement of the transfer device of the carrier.

〔composition〕

The present invention provides a conveyance system capable of conveying pallets using a conveyance vehicle equipped with a transfer device that can move laterally and move up and down. A substantially middle portion of a pair of links is rotatably supported,
A rod is rotatably connected to one end facing downward of the pair of links, and the rod is connected to one end of one of the links, and is guided by the base plate and has a tip inserted into a recess formed at the bottom of the pallet. A pin that can be thrust into, a spring that constantly biases the pin upward, and the other link of the pair of links are provided with a pin that can be inserted into the transfer device when the transfer device of the transport vehicle is raised. It has a structure in which rollers that can be touched are arranged.

〔Example〕

Reference numeral 1 denotes a base plate of the station, and a pair of brackets 1A and 1B are arranged on the lower surface of the base plate 1 in front and behind. 2 is an L-shaped link, and there are a pair of L-shaped links 2, one of which is tiltably supported by a pin 2C on a pair of brackets 1A fixed to the rear of the station, and the other one is supported on a pair of brackets 1A fixed to the rear of the station. It is tiltably supported by a pin 2C on a pair of brackets 1B fixed to the front part of the bracket. These pair of L-shaped links 2 are arranged symmetrically with respect to each other.

3 is a rod rotatably connecting the front L-shaped link 2F and the rear L-shaped link 2B.

Reference numeral 4 denotes a pin attached to one end of the rear L-shaped link 2B, which is guided by a hole formed in the substrate 1 and maintained in an upright state.

5 is a spring arranged on the bottom of the pin 4 and always urges the pin 4 upward; 6 is a roller rotatably attached to one end of the front L-shaped link 2F; It is provided so as to come into contact with the transfer device only when the loading device 7 is in the raised position.

As shown in FIG. 2, reference numeral 7 denotes a transfer device that can carry in and out pallets on which loads are placed by moving horizontally toward the station, and is composed of a loading platform 7A and a loading platform transition section 7B. .

A member 7C is attached to one side of the loading platform transition section 7B, which contacts the roller 6 and causes it to rise integrally as the loading platform transition section 7B rises.

[Operation explanation]

Hereinafter, the operation of the pallet lock device according to the present invention will be explained based on FIG. 2 A to H.

B. The transport vehicle (not shown) stops at an arbitrary fixed point, and the transfer device 7 starts moving horizontally.

(b) When the loading platform 7A is completely located at the bottom of the pallet, the horizontal movement of the transfer device 7 stops, and the vertical movement starts. This vertical lifting/lowering movement causes the member 7C to move forward to the front L-shaped link 2F.
In order to contact the roller 6 rotatably attached to one end, the front L-shaped link 2F tilts about the pin 2C, and this rotational force is transmitted to the rear L-shaped link 2B via the rod 3. Ru.

The rear L-shaped link 2B also rotates clockwise in the figure using the pin 2C as a fulcrum, and the spring 5
The pin 4 is removed from the pallet by resisting the urging force of the pin 4, and the lock is released.

C. After the transfer device 7 stops vertically moving up and down, the pallet is stored on the loading platform 7A, and the transfer device 7 moves horizontally in the opposite direction to the operation in A above.

D. Due to the horizontal movement of the transfer device 7, the contact between the roller 6 and the member 7C is released, and the biasing force of the spring 5 is transferred from the rear L-shaped link 2B to the front L-shaped link 2F via the rod 3. is tilted downward, and the pin 4 rises.

(e) When the horizontal movement of the transfer device 7 is completed, it is lowered on the transport vehicle and transported to another station or the like.

[Effect of idea]

As mentioned above, the present invention is purely mechanical in that it links the operation of the transfer device on the transport vehicle with the pallet lock device on the station, so it can be provided at an extremely low cost, and moreover, it can be provided easily on the station side. Since there is no need to provide any actuator or the like, there is no need to worry about connection to a power source or installation of electric wires, and the conveyance system can be made more flexible.

[Brief explanation of drawings]

FIG. 1 is a schematic side view of the present invention, and FIGS. 2A to 2H are diagrams showing the operating sequence of the present invention. 1... Station board, 2... L-shaped link, 3... Rod, 4... Pin, 5... Spring, 6... Roller, 7... Transfer device.

Claims (1)

[Scope of utility model registration request] In a conveyance system capable of conveying pallets using a conveyance vehicle equipped with a transfer device that can move laterally and move up and down, a pair of approximately "L"-shaped links are provided on a base plate of a station provided in the conveyance system. a rod that rotatably supports a substantially intermediate portion of the substrate and that is rotatably connected to one end facing downward of the pair of links, and that is connected to one end of one of the links; A pin whose tip can be inserted into a recess formed at the bottom of the pallet while being guided by the pallet, a spring that always urges the pin upward, and the other link of the pair of links has a transfer mechanism installed on the transport vehicle. A pallet lock device that is provided with rollers that can come into contact with the transfer device when the device is raised.