JPH0414590Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Field of Use This invention relates to a tile lifting machine used primarily to transport tiles from the ground to the roof during roofing work at a construction site.

BACKGROUND TECHNOLOGY Conventionally, in this type of tiling machine, a tile-loading truck is mounted on a ladder-like rail so that it can be raised and lowered, and one end of a traction rope disposed along the rail is connected to the truck. , and the other end of the rail is connected to an electric winch fixed to the lower end of the rail, so that the cart can be raised, lowered, and stopped by operating a switch, which is widely used. By using such a tile lifting machine, the tile lifting work can be carried out extremely easily and quickly.

Problems to be Solved by the Invention However, in conventional tiling machines, the raising/lowering and stopping of the trolley was performed by manual switch operation. When it reaches the upper or lower limit position, the stop switch must be turned on to stop it. For this reason, it is not possible to leave the site and perform other work while the machine is in operation, resulting in poor work efficiency.

Moreover, since the operation switch was installed on the ground side near the winch, it was not only difficult to check the upper limit stop position of the truck, but also there was a risk of injury to the person operating it on the ground due to falling tiles. It was hot. Further, there was an inconvenience in that the person working on the roof side could not perform the operation himself and had to leave the operation to the person on the ground side.

This invention was made to solve the above-mentioned problems, and it is possible to raise, lower, and stop the tile-carrying cart not only on the ground but also on the roof, and it also eliminates the troublesome stopping operation. The object of the present invention is to provide a tile lifting machine equipped with an automatic stop device that does not require the above operations.

Means to solve the problem Therefore, the tile lifting machine according to this invention has two steps:
By providing the switch operation unit that controls stopping not only on the lower end of the rail but also on the upper end, it can be operated from either side, and the upper limit position detection switch and lower limit position detection switch of the bogie are provided on the rail. By providing these switches, the upper and lower limit positions of the cart can be detected,
Further lifting and lowering operations are automatically stopped.

That is, in this invention, a tile-mounting trolley is installed along a ladder-like rail so that it can be raised and lowered freely, and one end of a traction rope arranged along the rail is connected to the trolley. In a tiling machine, the other end of the rope is connected to an electric winch fixed to the lower end of the rail, and the trolley can be raised, lowered, and stopped by operating a switch. are provided at both the upper and lower ends of the rail, and the rail is provided with an upper limit position detection switch and a lower limit position detection switch for the bogie, and these switches enable the lifting and lowering of the bogie to be performed at predetermined upper and lower limit positions. The gist of this invention is a tiling machine characterized by being automatically stopped.

Embodiments Hereinafter, this invention will be described in detail based on illustrated embodiments.

As shown in FIG. 1, the tile lifting machine according to this embodiment has a ladder-like rail 1 as its main component.
, a tile-mounting cart 2, a traction rope 3, an electric winch 4, switch operation parts 5, 6, and upper and lower limit position detection switches 7, 8 of the cart.

As shown in FIG. 1, the rail 1 has reinforcing bars 1b fixed horizontally at predetermined intervals between rail members 1a, 1a arranged in parallel, and the upper part is It is curved.

Along the rail 1, a tile-mounting trolley 2 is disposed on the rail members 1a, 1a, and includes a trolley main body 2a having a substantially L-shape in side view and wheels 2b.

One end of a steel traction rope 3 is connected to the trolley 2, which is placed along the rail 1 by being hung over pulleys 9, 9 provided at the bend and tip of the rail 1, respectively. At the same time, the other end of the rope 3 is connected to an electric winch 4 fixed to the lower end of the rail 1. By winding or unwinding the rope 3 with this electric winch 4, the trolley 1 is
is adapted to be moved up and down along the rail 1.

The electric winch 4 can be operated from either the upper or lower end by means of switch operating sections 5 and 6 provided at both the upper and lower ends of the rail 1.

As shown in FIG. 2, the switch operation unit 5 provided on the upper end side of the rail 1 is comprised of up/down selector switches 5a, 5b and a stop switch 5c, and is provided inside the casing 10. .
This casing 10 is a lower casing half 10
A and an upper casing half 10b, which are connected via a hinge 10c so that they can be folded in half. This upper casing half 10b
includes the switch operation section 5 and the power outlet 5.
d, and an emergency stop switch 11 having a laterally protruding switch rod 11a. The lower casing half 10a is provided with an upper limit position detection switch 7 for the truck 2, which has an upwardly projecting switch rod 7a. The casing 10 has a mounting bracket 12 fixed to one side of the upper casing half 10b and having a substantially U-shaped cross section to the rail member 1.
a and is fixed with screws 13. By appropriately changing the mounting position of this mounting bracket 12, the positions of the emergency stop switch 11 and the upper limit position detection switch 7 of the truck 7, in other words, the upper limit stop position of the truck 2 can be freely set. .

In addition, as mentioned above, the casing 10 is made into two foldable casing halves 10a and 10b.
Since it is constructed of , it is convenient because it can be folded up for transportation and storage in a compact form.

On the other hand, on the lower end side of the rail 1, as shown in FIGS. 3 and 4, there is a switch operation section 6 consisting of a rise switch 6a, a fall switch 6b, and a stop switch 6c, and a switch rod 8 projecting upward.
A lower limit position detection switch 8 for the truck 2 having a position A is provided.

The switch operation part 6 is provided at the tip of the connection cord C1 led from the winch 4,
The lower limit position detection switch 8 is provided on a mounting member 15 that is slidably fixed to a vertically elongated fixture 14 that is detachably fixed to the reinforcing bar 1b. By appropriately changing the mounting position of the fixing fitting 14 to the rail 1 or the fixing position of the mounting member 15 to the fixing fitting 14, the position of the lower limit position detection switch 8 of the bogie can be adjusted.
In other words, the lower limit stop position of the truck 2 can be freely set.

The operation and operation of the above-mentioned tile lifting machine will be explained.

First, place the tile on the trolley 2 and turn the lift switch 5a.
Or insert 6a. Then, the electric winch 4 is activated, the tow rope 3 is wound up, and the trolley 2 connected to the rope 3 is raised along the rail 1. When the carriage 2 further rises and comes into contact with the switch rod 7a of the upper limit position detection switch 7, the switch 7 is activated, the operation of the electric winch 4 is stopped, and the carriage 2 is prevented from rising any further. If for some reason the switch 7 does not operate and the truck 2 does not stop, it comes into contact with the switch rod 11a of the emergency stop switch 11 and the switch 11 is activated and stopped.

On the other hand, to lower the truck 2, the lowering switch 5d or 6b is turned on. Then, the winch 4 rotates in the opposite direction to the above, the rope 3 is rewound, and the truck 2 is lowered. When the truck 2 comes into contact with the switch rod 8a of the lower limit position detection switch 8, the switch 8 is activated, the operation of the electric winch 4 is stopped, and further lowering of the truck 2 is prevented.

Incidentally, if you want to stop at an arbitrary position, just press the stop switch 5c or 6c. The above operation can be performed in the same manner on either of the switch operating sections 5 and 6 provided at both the upper and lower ends of the rail 1.

Next, the circuit configuration of the above-mentioned tile lifting machine will be explained using the block diagram shown in FIG.

In this block diagram, switches 5a, 5b, 5c, 7, and 11 surrounded by a dashed line in the upper part are provided at the upper end of the rail 1, and switches 6 surrounded by a dashed dot line in the lower part are provided at the upper end of the rail 1.
a, 6b, 6c, and 8 are provided at the lower end of the rail 1.

To raise the truck 2, turn on the lift switch 5a or 6a. Then, power supply - stop switch 6c - emergency stop switch 11 - stop switch 5
c - The power supply voltage is applied to the relay circuit via the rising switch 5a or 6a - the upper limit position detection switch 7, and this relay circuit is activated to activate the non-contact relay SSR.
A voltage is applied to the relay SSR, and the relay SSR is turned on. At the same time, the switching circuit is switched to the upward rotation direction by the relay circuit.

Then, the AC voltage is applied to the rectifier circuit F via the non-contact relay SSR and converted into a DC voltage by the circuit F, and this DC voltage is applied to the winch 4 to operate the winch 4.

If any of the stop switches 5c, 6c, upper limit position detection switch 7, or emergency stop switch 11 is turned off, the application of voltage to the relay circuit is blocked and the non-contact relay SSR is turned off.
At the same time, the switching circuit is restored and switched to the dynamic braking circuit, and the winch 4 is stopped along with the activation of the mechanical brake.

On the other hand, to lower the truck 2, the lowering switch 5b or 6b is turned on. Then, in the same way as above, the non-contact relay SSR is turned ON, and at the same time the switching circuit is activated by the relay circuit, the polarity of the voltage applied to the winch 4 is reversed from the above case, and the winch 4 rotates downward. Rotate in the direction.

Here, when the stop switches 6c, 5c or the lower limit position detection switch 8 are turned off, the application of voltage to the relay circuit is blocked and the non-contact relay SSR is turned off. At the same time, the switching circuit is restored and switched to the dynamic braking circuit, and the winch 4 is stopped along with the activation of the mechanical brake.

Next, FIG. 6 shows an example of a specific circuit suitably used in this tile lifting machine.

Furthermore, among the codes used in this circuit,
A, B, C, D, E are contact relays, A1, A2,
A3, A4 are contacts of relay A, B1, B2, B
3. B4 is the contact of relay B, C1 is the contact of relay C, D1 is the contact of relay D, E1, E2 is the contact of relay D, F is the rectifier circuit, G is the automatic/manual switching circuit, R is the braking resistor. be.

The switches 5a, 5b, 5c, 7, 11 are provided on the upper end side of the rail 1, and the switches 6a, 6b, 6
C and 8 are provided on the lower end side of the rail 1.

Apply an AC voltage of 100 V to input terminals a and b, and switch the changeover switch G to the side.

Therefore, when the lift switch 5a or 6a is pressed down, the relays A and C are energized and activated while the lift switch 5a or 6a is pressed down. Due to the operation of relay A, contact A1 switches to the side, and contact A
2, A3 is connected, and contact A4 is disconnected. Furthermore, the contact C1 is disconnected by the operation of the relay C. Then, the power supply voltage is applied to terminals C and D of the non-contact relay SSR, short-circuiting occurs between terminals A and B, and the power supply voltage is applied to the rectifier circuit F.
is converted into direct current. Then, this DC voltage is applied to the winch 4 to start the winch 4.

Here, if you stop pressing the up switch 5a or 6a, energization to relays A and C is interrupted, contact A is switched to the side, and voltage application to non-contact relay SSR is interrupted, turning it OFF.
, and input to the winch 4 is blocked. However, because the winch 4 is not stopped immediately due to its inertia and continues to rotate, it acts as a generator, and current flows through the closed circuit of the winch 4 - contact A1 - relay E - contact B1 - winch 4, and this The current activates relay E, which disconnects contact E2 and connects contact E1. Therefore, the winch 4 is electrically braked and stopped by mechanical braking.

When the lower switch 5b or 6b is pressed down, relays B and D are energized and activated while the lower switch 5b or 6b is pressed down. Contact B is activated by relay B.
1 switches to the side, contacts B2 and B3 are connected, and contact B4 is disconnected. Also, relay D
, the contact D1 is disconnected. Then,
Power supply voltage is applied to terminals C and D of the non-contact relay SSR, which activates and short-circuits between terminals A and B, and the power supply voltage is applied to rectifier circuit F, which converts it into a DC voltage. . Then, this DC voltage is applied to the winch 4 and the winch 4 is started. This direction of rotation is opposite to that in the above case since the polarity of the voltage is opposite.

Here, when the depression of the lowering switch 5b or 6b is stopped, the energization to the relays B and D is interrupted, the contact B3 is disconnected, and the contact B1 returns to the side. Then, the application of voltage to terminals C and D of the non-contact relay SSR is interrupted, and this turns OFF.
, and input to the winch 4 is blocked. Then, the winch 4 is electrically braked and stopped by mechanical braking, just as described above.

When the changeover switch G is switched to the side and the same operation as described above is performed, when the lift switch 5a or 6a is pressed down, the relay A is activated and the contact A2 is connected. Therefore, even if the pressing of the lift switch 5a or 6a is interrupted, the non-contact relay SSR is kept in the ON state, so the winch 4 continues to rotate.

Similarly, when lowering switch 5b or 6b is pressed down, relay B is activated and contact B2 is connected.
Therefore, even if the depression of the lowering switch 5b or 6b is interrupted, the unconnected relay SSR is kept in the ON state, so the winch 4 continues to rotate. The other operations are the same as those described above, so their explanation will be omitted.

Effects of the invention The tile lifting machine according to this invention is equipped with a tile loading cart that can be raised and lowered along a ladder-like rail, and
One end of a towing rope arranged along the rail is connected to the truck, and the other end of the rope is connected to an electric winch fixed to the lower end of the rail, which raises and lowers the truck by operating a switch.
Since it is designed so that it can be stopped, it is possible to carry out roofing work extremely easily and quickly, just like in the past.

Moreover, since the switch operation parts for controlling the raising, lowering, and stopping of the truck are provided on both the upper and lower ends of the rail, the raising, lowering, and stopping operations of the truck can be performed not only from the ground side but also from the roof side. Therefore,
It is possible to avoid the inconvenience of having to leave the operation to a person on the ground side as in the past.

Furthermore, an upper limit position detection switch and a lower limit position detection switch of the bogie are provided on the rail, and these switches automatically stop the lifting and lowering operation of the bogie at predetermined upper and lower limit positions. Therefore, there is no need to manually operate a switch to stop the switch as in the past. Therefore, it is not necessary to raise and stop the trolley, which is particularly troublesome to check the stopping position, and the operator can leave the site by turning on the switch, allowing him to perform other tasks and improve work efficiency. Not only can this be done, but the danger of injury due to falling roof tiles can also be avoided.

[Brief explanation of the drawing]

Figures 1 to 6 show an embodiment of this invention. Figure 1 is an overall perspective view, Figure 2 is an enlarged perspective view showing the vicinity of the switch operation section on the roof side, and Figure 3 is an enlarged perspective view of the area on the ground side. Enlarged perspective view showing the switch operation section, No. 4
The figure is an enlarged perspective view showing the vicinity of the lower limit position detection switch of the bogie provided at the lower end of the rail, FIG. 5 is a block diagram showing the circuit configuration, and FIG. 6 is a circuit diagram. DESCRIPTION OF SYMBOLS 1...Rail, 2...Tile mounting trolley, 3...Tow rope, 4...Electric winch, 5, 6...Switch operation unit, 7...Trolley upper limit position detection switch, 8...Trolley's upper limit position detection switch Lower limit position detection switch.

Claims (1)

[Scope of Claim for Utility Model Registration] A tile-mounting trolley is installed along a ladder-like rail so as to be able to rise and fall freely, while one end of a traction rope arranged along the rail is connected to the trolley. , the other end of the rope is connected to an electric winch fixed to the lower end of the rail, and the trolley can be raised, lowered, and stopped by operating a switch, the switch controlling the raising, lowering, and stopping of the trolley; An operating section is provided at both the upper and lower ends of the rail, and the rail is provided with an upper limit position detection switch and a lower limit position detection switch of the cart, and these switches control the raising/lowering operation of the cart at predetermined upper and lower limit positions. A tile lifting machine characterized in that it is configured to automatically stop at a point.