JPH063010B2 - Incline equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an incline facility for transporting an object along an inclined surface, and in particular, for loading and unloading a dump truck or the like on a truck at the lower end of the inclined surface. The present invention relates to a suitable incline facility.

[Conventional technology]

The incline equipment for dam construction loads concrete manufactured by the concrete manufacturing equipment installed at the top onto a concrete carrier, lowers this carrier along a rail installed on the slope of the mountain, and at the lower end of the slope, Supply to the carrier truck of The slope of the trolley is lowered using a hoisting device. The slope of the dam is relatively long.
(JP-A-58-112868) In addition, an emergency stop device that operates by the dead weight of a rope connecting lever is used for a carriage of an incline facility by utilizing the fact that the rope tension is lost when the rope is cut. have.

[Problems to be solved by the invention]

When the carrier carrying concrete is lowered down the slope and discharged concrete at the lower end, the total weight of the carrier is reduced, the extension of the rope of the hoisting device is reduced, and the carrier floats upward.

Even if this lift occurs, there is no person on the trolley, and there is a large chute between this trolley and the next trolley below this trolley. There is no real harm to the supply of.

However, considering that concrete is transported by a dump truck, the above-mentioned uplift is very dangerous. That is, as shown in FIG. 1, a dump truck 30 supplied with concrete in a concrete manufacturing facility is loaded on a trolley 2 located above an inclined surface and lowered by a hoisting device 10. When the truck 2 lands on the concrete pouring position,
The driver of the dump truck 30 starts from the truck 2. With the start of the dump truck 30, the tension of the rope 11 that suspends the truck 2 is reduced, and the truck 2 is lifted upward. A driver is on the dump truck 30. Therefore, this uplift is very dangerous.

To this end, the hoisting device continues to operate even after the truck carrying the dump truck descends by the hoisting device and lands on the lower road surface, and the hoisting device stops operating with the rope slackened. Just do it.

When the rope is slackened and the emergency stop device for cutting the rope is installed on the truck, the emergency stop device is activated every time the truck lands and the rope sags.

An object of the present invention is to prevent the operation of the emergency stop device at the time of landing in the structure in which the rope for suspending the carriage is slackened.

[Means for solving problems]

The above object is achieved by providing a landing detector that comes into contact with the ground surface when the vehicle lands, and a device that operates by detecting the landing and stops the movement of the emergency stop device.

[Action]

The emergency stop device does not operate even if the rope sags because the emergency stop device stops operating when the truck lands. Therefore, the truck can be raised by discharging the load. When the truck leaves the bed, the device for stopping the operation of the emergency stop device becomes inoperative, and the emergency stop device becomes operable.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS.

First, the incline equipment that hangs the rope for hanging when the bogie lands will be described with reference to FIGS. 4 to 9. FIG. 4 is a conceptual diagram of the incline equipment.

1 is a rail provided on the slope, 2 is a trolley, and a wheel device 3
It can be moved up and down along the rail 1 via a and 3b. The dolly 2 has a floor 2a on which the dump truck 30 is placed. The wheel devices 3a and 3b are provided only on the left and right rails 2 and 2. The left and right wheel devices 3a and 3b are one frame 2b
It is installed in. Left and right frames 2b, 2b and floor 2a
And are connected by a frame 2c. Left and right frame 2
c and 2c are connected by a frame 2d. Further, the upper ends of the frames 2b and 2b are also connected by the frame 2e. The rope 11 of the hoisting device 10 is connected to the central portion of the frame 2d.

The dump truck 30 includes the left and right frames 2b, 2b, 2
It passes through the space between c and 2c and the upper frames 2d and 2e.

The truck 2 is mounted on the road surface 31 of the dump truck 30 at the upper end of the slope.
The guide frame 4 on which the wheel device 3a on the upper side can be placed is installed. The dump truck 20 passes between the left and right guide frames 4 and 4. Guide frame 4
Rail 2 is mounted on. Posts 4a, 4a are erected on the guide frames 4, 4. Post 4a, 4a
A sheave 5 that supports the rope 11 is provided at the center of a frame 4b that connects the ropes.

The road surface 21 is substantially at the installation position of the concrete manufacturing facility.

The hoisting device 10 is installed at a position where it does not interfere with the traveling of the dump truck 20. The rope of the drum 13 driven by the electric motor 12 is connected to the carriage 2 through the sheave 5.

The sheave 5 is provided with a load detector 20 for detecting the load applied to the sheave. The detection signal of the load detector 20 is input to the control device 21 of the hoisting device 10.

The operation of this configuration will be described with reference to FIGS. 8 and 9.

When the truck 2 is lifted as shown by the imaginary line and its floor 2a is aligned with the road surface 31, the dump truck 30 is
You can get on the trolley 2.

When the hoisting device 10 is operated and the rope 11 is unrolled, the carriage 2
Descends along rail 1. Even if the truck 2 lands on the road surface 32 of the lower dump truck, the operation of the hoisting device 20 is continued. Therefore, the rope 11 is unrolled until slack occurs. Therefore, the load applied to the sheave 5 becomes as small as the weight of the rope 11. The load detector 20 can detect this small load. Here, it is assumed that it is turned off with a small load. When the load detector 20 outputs an OFF signal, the hoisting device 10 stops the feeding of the rollers (steps S1, S2, S3). In this state, the dump truck 30 is moved forward, and passes through the road surface 32 to reach the setting site. .

Since the rope 11 is slack, even if the dump truck 30 starts, the carriage 2 does not rise.

In order to raise the dump truck 30, the hoisting device 20
When the operation is started on the winding side, the operation is started at a low speed. (Step S11) When the slack rope 11 is stretched and the load detector 5 is turned on, the hoisting device 20 operates at high speed. (Steps S13 and S15) Since the rope 11 is slack as described above, it is possible to prevent the bogie 2 from rising.

After the dolly 2 has landed, the rope 3 can be slackened on the road 3
This can be achieved by providing a detector on the second side and stopping the hoisting device 10 after a predetermined time after the detector detects landing.

However, the ground rises as concrete is poured, so replacement of the detector is necessary.

According to the present invention, there is no such problem and the setting of the timer can be made unnecessary.

In addition, since the ascending starts at a low speed during the hoisting operation, compared to sudden acceleration with the rope slack, the cart is not impacted and safe driving is possible.

Next, an embodiment of the emergency stop device 40 of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is a side view of the Incline carriage, showing a state where it landed at the lower end of the slope.

The rope 11 is connected to the carriage 2 via a lever 41. The lever 41 is attached to a horizontal shaft 42 of the frame 2d so as to be vertically swingable. When the tension of the rope 11 is released, the lever 41 rotates downward as shown by an imaginary line, and the brake device 60 is operated via the rod 44 or the like to clamp the rail 1. Even if the truck 2 lands on the road surface 32 and the rope 11 sags, the air cylinder device 70 is used to prevent the lever 41 from descending.
Is supporting 1.

As for the rod 44, the brake device 50, the air cylinder device 70, etc. are installed on the frame 2c side. This configuration will be described below with reference to FIGS. 2 and 3.

A lever 43 is attached to the frame 2c side of a shaft 42 connecting the lever 41. The rod 44 is connected to one end of the lever 43. The lower end of the rod 44 is connected to an L-shaped lever 46 that swings vertically about a pin 45. The other end of the L-shaped lever 46 is connected to one end of a lock lever 48 by a rod 47. The lock lever 48 swings up and down about the pin 49. A roller 50 is provided at the other end of the rod lever 48. Reference numeral 51 denotes a cam lever having an L-shaped tip, which is in contact with the roller 50. The cam lever 51 can swing up and down around the pin 52. The other end of the cam lever 51 is the lever 55
A link 54 is connected to the tip of the. The lever 55 is vertically swingable around the pin 56. Lever 5
The other end of 5 is connected to the brake shoe 61 of the brake device 60. The lever 55 is constantly pushed by the compression spring 57 so as to pull out the brake shoe 61 (in the inoperative state of the brake). Reference numeral 58 is a seat provided on the frame 2c. The pins 45, 49, 52.56 are installed on the frame 2c.

When the tension of the rope 11 is released, the lever 41 lowers due to its own weight as shown by the alternate long and short dash line. This movement is performed by the lever 43, the rod 44, the lever 46 and the rod 47.
Rock 8 Therefore, the guide roller 50 is disengaged from the cam lever 51, the lever 55 swings by the force of the compression spring 57, and the brake shoe 61 is pulled out. Therefore, the brake shoe device 60
Is operated by a spring (not shown) to firmly grasp both side surfaces of the rail 1 and stop the lowering of the carriage 2.

The tip of the cam lever 51 is the roller 5 of the lock lever 48.
Since it is deviated from 0, the brake device 60 continues to operate only by raising the lever 41. Therefore, it is necessary to prevent the operation of the brake device 60 except when the rope 11 is cut or when the hoisting device 10 fails.

The configuration of the emergency stop device 40 including the brake device 60 and the link mechanism from the lever 41 to the brake device 60 is basically known.

Next, a configuration for preventing the operation of the brake device 60 at the time of landing of the truck 2 will be described.

The air cylinder device 70 is a seat 2g provided on the frame 2c.
It is installed in. The rod of the air cylinder device 70 is connected to the other end of the lever 43. When the dolly 2 lands on the road surface 31, the rod projects and supports the lever 41 upward. The floor 2a of the trolley 2 has a landing portion 73 and a striker 74 in contact with the road surface 31. The striker 74 should land faster than the floor 2a.
It is provided so as to project. The striker 74 is suspended via a lever 79 at one end of a lever 76 that swings up and down around the pin 75. Pin 75 is frame 2
It is installed in c. The other end of the lever 76 is an air valve 77.
It is connected to the piston rod of. The trolley 2 has an air tank 78. The air in the air tank 78 is the air valve 77.
Is supplied to the air cylinder device 70 via.

In such a configuration, when the truck 2 is landed on the road surface 32 and the striker 74 is pushed up, the air valve 77 is actuated, the air in the air tank 78 is supplied to the air cylinder device 70, and the rod is projected. , Support the lever 41 upward. This makes rope 1
Even if 1 is slackened, the emergency stop device 40 does not operate.

When the dolly 2 leaves the floor, the air valve 77 is moved to the air tank 78.
Then, the air in the air cylinder device 70 is discharged. The rod (piston) of the air cylinder device 70 is retracted by the rope tension. Therefore, the emergency stop device 40 becomes operable.

The air in the air tank 78 is replenished when it rises to the upper end of the rail 1.

FIG. 3 shows an example in which the striker 74 and the lever 43 are connected by a link mechanism. When the striker 74 detects landing, the rod 81 is pushed up and supports the lever 43 via the lever 82. The lever 82 swings up and down about the pin 83.

The connection position of the air cylinder device 70 or the like may be any position as long as it can prevent the engagement of the roller 50 of the lock lever 48 and the cam lever 51 from being disengaged.

〔The invention's effect〕

According to the present invention, the emergency stop device does not operate even when the trolley lands and the tension of the rope disappears, while the emergency stop device operates reliably if the rope breaks and the rope tension disappears when leaving the bed, It is possible to prevent the cart from running out of control.

[Brief description of drawings]

FIG. 1 is a side view of a truck of an ink-line facility showing an embodiment of the present invention, FIG. 2 is a side view of an emergency stop device related to FIG. 1, and FIG. 3 is a view of another embodiment of the present invention. Part side view, 4th
The figure is a conceptual diagram of the incline equipment, and Fig. 5 is 5- of Fig. 4.
5 is a view of FIG. 6, FIG. 6 is a view of 6-6 of FIG. 4, FIG. 7 is an electric circuit diagram, FIG. 8 is a flowchart for lowering the trolley, and FIG. 9 is a flowchart for raising the trolley. 1 ... Rail, 2 ... Truck, 4 ... Guide frame, 5
...... Sheave, 10 ...... Hoisting device, 11 ...... Rope, 12 ...... Load detector, 40 ...... Emergency stop device, 41 ...... Lever, 60 ......
Braking device, 70 ... Air cylinder device, 74 ... Striker, 77 ... Air valve, 78 ... Air tank

Claims (1)

[Claims] 1. A trolley for moving up and down along an inclined surface and a rope connected to the trolley for winding and unwinding, and when the dolly lands on the lower end of the inclined surface, the rope is unwound until it sags. A catching device, which grasps the inclined surface by a decrease in rope tension connected to the carriage, an emergency stop device installed on the carriage, and a landing detector that detects that the carriage has landed on the lower end of the slope, Incline equipment consisting of a device that prevents the operation of the emergency stop device by the operation of the landing detector.