JPH056623B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a device for stopping a motor that drives a pallet when the pallet has descended to the lowest position in a two-car garage for storing two cars.

[Background Art] In a two-car garage, cars are placed on pallets and raised and lowered, and the lifting and lowering of the pallets is driven by motors. By the way, when lowering a pallet, the motor is driven by operating a switch at hand, and the user stops the motor after confirming that the pallet has descended to the lowest position. For this reason, if an operation is made incorrectly, an abnormal drive may occur in which the motor continues to be driven even though the pallet is being lowered.

[Object of the Invention] The present invention has been made in view of the points described above, and the object of the present invention is that when the pallet descends to the lowest position, the first lower limit detection limit switch is activated and the motor is automatically activated. The drive of the motor is stopped and abnormal drive does not occur, and even if the first lower limit detection limit switch does not operate, the second lower limit detection limit switch operates and the motor is stopped, thereby doubly preventing abnormal drive of the motor. To provide a highly safe pallet lowering stop device for a three-dimensional garage that accommodates two cars.

[Disclosure of the Invention] The pallet lowering stop device of the two-car storage three-dimensional garage of the present invention has a support 1 having a U-shaped cross section erected vertically,
A pallet 5 on which a car 4 is placed is placed on the foundation surface 6, and the end of the aggregate 7 suspended horizontally on the pallet 5 is inserted into the support column 1 so as to be able to slide up and down, and a chain is attached to the beam built within the support column 1. A cable body such as 17 is inserted, and one end of the cable body is fixed near a driving wheel such as a sprocket 16 through which the cable body is taken up or sent out, and a space between the fixed part and the drive wheel is The hanging part 30 of the cable body is inserted into the column 1, and the other end is fixed to the aggregate 7, so that when the pallet 5 descends to the lowest position, the actuating part 23 of the aggregate 7 A first lower limit detection limit switch 22 that stops the motor 14 that drives the drive wheels when the first lower limit detection limit switch 22 stops operating when the pallet 5 is lowered to the lowest position is installed at the bottom of the column 1. A second lower limit detection limit switch 31 for detecting excessive feeding of the cable body and stopping the motor 14 when the cable body is being driven is provided on the hanging portion 30 of the cable body, and configured as described above. This solves the drawbacks of the conventional example. That is, when the pallet 5 descends to the lowest position, the first lower limit detection limit switch 22 is activated by the actuating part 23 of the aggregate 7 to automatically stop the motor 14 to prevent the motor 14 from being driven abnormally. Lower limit detection limit switch 2
2 is not activated, the second lower limit detection limit switch 31 is activated to stop the motor 14, thereby doubly preventing abnormal driving of the motor.

The present invention will be explained in detail below with reference to Examples.

The struts are formed in a Lipko-shaped cross section, as shown in Figure 1.
As shown in FIG. 2, it is vertically installed on both the front and rear sides of the concrete foundation surface 6. The pillar 1 is constructed so that the opening faces inward. A beam 9 having a U-shaped cross section with a lip is installed in the longitudinal direction on both sides of the foundation surface 6, and the beam 9 is connected to the upper end of the support column 1. The opening of the beam 9 also faces inward, and the opening is closed with a cover 10. The interior of the beam 9 and the interior of the support 1 are communicated through a communication port. An arch-shaped rear support part 11 is provided at the rear of the foundation surface 6, and a drive unit storage box 12 is provided at the upper part of the rear support part 11. The cover 13 is provided between the left and right beams 9 at the front part. It has been erected. A motor 14 with a speed reducer is housed in the drive unit storage box 12, and the motor 14 can drive a drive shaft 15 installed between both sides of the drive unit storage box 12. Two sprockets 16 as an example of drive wheels are mounted on each side of the drive shaft 15, and a chain 17 as an example of a cable body is hung around the sprockets 16. . This chain 17 is inserted into the beam 9, and one end of the chain 17 is connected to the drive unit storage box 1.
2, and the other end is inserted into the support column 1. Between the fixed portion of the chain 17 and the sprocket 16, the chain 17 forms a hanging portion 30 that hangs down in a U-shape. The motor 14 can freely rotate in forward and reverse directions, and by switching the direction of rotation of the motor 14, the sprocket 16 can take over or send out the chain 17. A rectangular guide tube 18 is provided in the vertical direction at a portion of the beam 9 corresponding to the upper end of each column 1, and a column portion 3 is suspended from the roof 2 so as to correspond to the column 1. The pillar part 3 is attached to the guide tube 1
8, and the lower part of the column 3 is inserted into the column 1. A guide roller 19 is rotatably mounted inside the beam 9 at a portion corresponding to the guide cylinder 18, and the chain 17 is attached to the guide roller 19.
is hung. A pallet 5 is arranged on the foundation surface 6 between the pillars 1 on both sides, and as shown in FIGS.
Both ends are inserted into the support column 1 so as to be able to move up and down. The upper surfaces of both ends of the aggregate 7 form push-up portions 8 that come into contact with the lower surfaces of the column portions 3 and push upward, and the other end of the chain 17 is connected to the push-up portions 8. In addition, the push-up part 8 is provided with a hook part 28 having a hook hole 27 projecting upward, so that when the aggregate 7 rises to the top, it is hooked to the latch 20 in the beam above the column 1. The portion 28 is adapted to engage. The latch 20 is designed to be retracted when the pallet 5 is raised or lowered, and protruded at other times. An upper limit detection limit switch 21 is installed in the upper part of the column to stop the motor 14 when the pallet 5 rises to the top.
A first lower limit detection limit switch is installed in the lower part of the column 1 to stop the motor 14 when the pallet 5 descends to the lowest position. Operating portions 23 for operating the limit switches 21 and 22 are provided at both ends of the aggregate 7. Further, a second lower limit detection limit switch 31 is disposed above the U-shaped hanging portion of the chain 17 so as to be sandwiched between the chains 17. In other words, Figure 7,
As shown in FIG. 8, the second lower limit detection limit switch 31 is attached to the hanging mounting plate 32, and the actuator 33 of the second lower limit detection limit switch 31 is positioned between the chains 17, and the chains 17 are fed out to form a U-shape. When the lower end of the chain 17 pushes up the actuator 33, the second
The lower limit detection limit switch operates and the motor 14
It's starting to stop. The front part of the pallet 5 is provided with an inclined surface 24 to make it easier for the car 4 to climb up, and the rear upper surface of the pallet 5 is provided with a slope 24 for the car 4 to climb.
A fixed wheel stop 25 for stopping the rear part of the rear wheel is provided, and a movable wheel stop 26 that can freely move in and out for stopping the front part of the rear wheel is provided in front of the fixed wheel stop 25. This movable wheel stopper 26 is designed to retract from the top surface when the pallet 5 descends to the lowest position, and automatically protrudes to the top surface side when the pallet rises.

Next, the operation of the two-car storage three-dimensional garage of the present invention constructed as described above will be explained. Usually one car 4
When storing the pallet 5, the pallet 5 rests on the base surface 6. At this time, the roof 2 is lowered by its own weight, the roof 2 is placed on the beam 9, and the column part 3 is inside the support column 1. Furthermore, a movable wheel stopper 26 is recessed. In this state, one car 4 is stored by placing the car 4 on the pallet 5. Moreover, when storing two cars 4, the pallet 5 is raised. That is, the motor 14 is driven, the chain 17 is taken up by the sprocket 16, the aggregate 7 is pulled up by the chain 17, and the pallet 5 is raised.
When the chain 17 is taken up by the sprocket 16, the chain 17 hangs down in a U-shape within the drive unit storage box 12. When the aggregate 7 is pulled up by the chain 17 and raised by a predetermined amount, the pushing-up part 8 of the aggregate 7 hits the lower end of the pillar part 3, and the pillar part 3 rises together with the aggregate 7, and the roof 2 rises. When the pallet 5 rises to the top, the operating portion 23 hits the limit switch 21 and the motor 14 is stopped. In this state, the latch 20 and the hook hole 2 of the hook portion 28
7 corresponds to the latch 20 when the motor 14 is stopped.
protrudes and is caught on the hook part 28, and the motor 1
Even if the brake number 4 is released, the vehicle is prevented from descending. If another vehicle 4 is placed on the base surface 6 with the roof 2 and pallet 5 raised in this manner, two vehicles 4 can be accommodated. In addition, when lowering the car 4 stored above, take out the car 4 on the foundation surface 6,
The chain 17 is sent out by driving the motor 14 in the opposite direction to the above. Then, the chain 17 is lowered within the support 1, and the pallet 5 is lowered by its own weight, and the pallet 5 is placed on the foundation surface 6, allowing the automobile 4 to be taken out.
When the pallet 5 descends to the lowest position, the operating section 23 hits the first lower limit detection limit switch 22, the motor 14 is stopped, and the chain 17 is no longer fed out. At this time, even if the first lower limit detection limit switch 22 is not activated, the motor 14 does not stop;
When chain 17 is further fed out, chain 1
7, the actuator 33 is pushed up and the second
The lower limit detection limit switch 31 is activated and the motor 14 is stopped.

In the above embodiment, the chain 17 is used as the cable body.
Although the embodiment has been described using a wire, a belt, or the like may be used. Furthermore, although the embodiment has been described in which the sprocket 16 is used as the drive wheel, other wheels may be used depending on the type of the cable.

[Effects of the Invention] As described above, the present invention vertically erects columns having a U-shaped cross section, places a pallet on which a car is placed on the foundation surface, and inserts the ends of aggregates suspended horizontally on the pallet into the columns. A cable body like a chain is inserted into the beam installed on the support column so that it can slide up and down, and the cable body is placed near the drive wheel like a sprocket that takes up and sends out the cable body. One end of the cable was fixed, and the area between the fixed part and the drive wheel was a hanging part of the cable, and the other end of the cable was inserted through the column and the other end was fixed to the aggregate, so the drive wheel could be fixed. When driven, the cables are taken up and sent out, and the pallet is raised and lowered, raising and lowering the car.The aggregate of the pallet is guided by the pillars, and it goes up and down in a stable manner. A first lower limit detection limit switch is installed at the bottom of the column, which stops the motor that drives the drive wheels when the aggregate's operating part hits it when it descends, so when the pallet descends to the lowest position, the first lower limit detection limit switch It is highly safe because the motor is activated and the motor is automatically stopped, and the motor is not driven abnormally.Moreover, when the pallet is lowered to the lowest position, the first lower limit detection limit switch is not activated and the drive wheels are driven. A second lower limit detection limit switch that detects excessive feed of the cable body and stops the motor is provided at the hanging portion of the cable body, so even if the first lower limit detection limit switch does not operate, the second lower limit detection limit switch is installed. The limit switch detects excessive feeding of the cable and stops the motor, thereby doubly increasing stability.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an embodiment of the present invention, Fig. 2a
is a partially cutaway plan view of the same as above, FIG. 2b is a front view of FIG. 2a, FIG. 2c is a left side view of FIG. 2a, FIG. 2d is a right side view of FIG. 2a, Figure 3a is a plan view showing the same drive system as above, Figure 3b is a front view of Figure 3a,
Fig. 4 is a perspective view of the above support column, Fig. 5 is a sectional view of the above support support, Fig. 6 is a perspective view of the intersection of the above support support and beam, and Fig. 7 is a hanging portion of the above chain. FIG. 8 is a side view of the second lower limit detection limit switch part shown in FIG.
7 is an aggregate, 9 is a beam, 14 is a motor, 16 is a sprocket, 17 is a chain, 22 is a first lower limit detection limit switch, 23 is an operating part, 30 is a hanging part, and 31 is a second lower limit detection limit switch.

Claims (1)

[Claims] 1 A column with a U-shaped cross section is erected vertically, a pallet on which a car is placed is placed on the foundation surface, and the end of the aggregate suspended horizontally on the pallet is inserted into the column so as to be able to slide up and down. A cable body such as a chain is inserted into a beam built inside, and one end of the cable body is fixed near a drive wheel such as a sprocket that takes in and sends out the cable body, and the fixed part and drive The area between the rope and the ring is the hanging part of the cable, and the other end of the cable is inserted through the support and the other end is fixed to the aggregate, so that when the pallet descends to the lowest part, the operating part of the aggregate touches the bottom. A first lower limit detection limit switch is installed at the bottom of the support column to stop the motor that drives the drive wheels when the pallet is lowered to the lowest position.
A two-unit storage structure equipped with a second lower limit detection limit switch that detects excessive feed of the cable body and stops the motor when the lower limit detection limit switch is not activated and the drive wheels are driven. Garage pallet lowering stop device.