JPH0434651B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a mobile track type earth and sand removal device equipped with a bucket load sensing device.

BACKGROUND ART An earth and sand removal device using a cable crane type bucket, which is used to remove earth and sand accumulated in a dam, has already been proposed in Japanese Patent Application No. 158169/1983. In other words, a carriage is placed on the main cable stretched across both banks of the dam, and the carriage is driven by the movement of the transverse cable stretched along the main cable, supporting the bucket suspended from the carriage. A supporting rope for opening and closing the bucket and an opening/closing rope for opening and closing the bucket are stretched along the main rope.

Problems to be Solved by the Invention With this configuration, when lowering the bucket into the water, it is difficult to tell when the bucket has reached the bottom of the dam, and it is also unclear when to close the bucket and pull it out. Difficult to operate. Furthermore, there were drawbacks such as the amount of soil that could be grasped was not constant, resulting in poor workability.

The present invention detects the load of the support rope that suspends and supports the bucket and the opening/closing cable that opens and closes the bucket.
Based on this, the purpose is to improve work efficiency by making it easier to understand whether the bucket has reached the dam bottom.

Means for Solving the Problem In order to solve this problem, the present invention provides a carriage that is movable while being guided by a main rope stretched from the right bank to the left bank, and along this main rope,
In a movable track-type earth and sand removal device in which a moving cable for moving the carriage, an opening/closing cable for opening/closing a bucket provided on the carriage, and a support cable for supporting the bucket so as to be able to move up and down, one end of the opening/closing cable is provided. is fixed to one bank and the other end is connected to an opening/closing cable winch installed on the other bank, and one end of the support cable is fixed to one bank and the other end is installed on the other bank. Connected to a rope winch,
A weight sensor is interposed on the fixed end side of the opening/closing rope and the fixed end side of the support rope, respectively, and an opening/closing rope load meter and a support rope load meter are operated, which display the respective loads based on the electric signals generated in the respective weight sensors. A winch controller is provided on the panel and controls the opening/closing rope winch and the support rope winch based on an operation signal from the operation panel and a detection signal from the weight sensor.

Function With this configuration, even if the bucket is underwater where it cannot be seen directly, it is possible to easily know from the support load meter whether it has reached the bottom of the dam or is halfway there, and it also ensures that the bucket does not remove the earth and sand. You can easily know whether the rope is being gripped or not from the open/close load meter, and you can drive the winch accurately and quickly using the operation panel, improving work efficiency. For example, it is possible to prevent the winch from being applied with an excessive load, thereby improving work safety.

Embodiment An embodiment of the present invention will be described below based on the drawings. Figures 1 to 7 are drawings of a movable track type earth and sand removal device according to the present invention, in which Figure 1 shows a plan view, Figures 2 and 3 show side views, and a carriage with a bucket suspended therein is shown. Show where you have moved. Also, the fourth
Figures to Figures 7 show how to hang each rope, Figure 4 shows the moving rope, main rope and tension rope, Figure 5 shows the transverse rope, and Figure 6
The figure shows the opening/closing cable, and FIG. 7 shows the supporting cable.
In particular, FIG. 7 shows the bucket open with the opening line loosened.

The mobile track-type earth and sand removal device according to the present invention is a device that uses a bucket 4 to lift up the earth and sand 3 that has accumulated near the water intake 2 of the dam 1, releases it near the dam gate 5, and discharges it from the dam gate 5. As shown in FIGS. 1 to 3, the structure is such that one end of the main rope 6 is attached to the right bank of the dam 1 via a tensioning device 7.
The other end of the main rope 6 is connected to an end block 8 provided on the left bank. The end block 8 is connected to a movable cable 10 hung between two supports 9 provided on the left bank, and as shown in FIG. By operating, the end block 8 is pulled and the main rope 6 connected thereto can be moved within the range A. A carriage 12 with a bucket 4 suspended thereon is provided on the main rope 6 so as to be movable along the main rope 6. As shown in FIG. 5, the traversing cable 13 is stretched endlessly from the left bank to the anchor block 14 on the right bank, part of it is hung on an endless traversing cable winch 15, and the other part is connected to the carriage 12. The carriage 12 is moved by operating the traverse cable winch 15.

FIG. 6 shows the opening/closing cable 16 for opening and closing the bucket 4. One end of the opening/closing cable 16 arranged along the main rope 6 is connected to the anchor block 14 on the right bank via the first weight sensor 17, and the other end is connected to the anchor block 14 on the right bank via the first weight sensor 17. is the carriage 12,
The bucket belt 4, the end block 8, and the end block 8 are wound around a rope winch 18 via a support 9, and the bucket belt 4 is opened and closed by driving the rope winch 18. FIG. 6 shows the bucket bag 4 being closed.

FIG. 7 shows a support rope 19 that supports the bucket cart 4. One end of the support rope 19 disposed along the main rope 6 is connected to the anchor block 14 on the right bank via a second weight sensor 20, and the other end is connected to the anchor block 14 on the right bank via a second weight sensor 20. The end is a carriage 1
2. The bucket belt 4 is wound around a support rope winch 21 via an end block 8 and a strut 9, and the bucket belt 4 is supported by driving the support rope winch 21.

The present invention is a device for detecting the load of the bucket of the earth and sand removal device constructed as described above, and its construction will be explained based on the embodiment shown in FIGS. 8 and 9. An electric signal from the first weight sensor 17 provided between the anchor block 14 and one end of the opening/closing cable 16 is sent to the first opening/closing load meter 2 on the operation panel 23 via the control panel 22.
Display on 4. Additionally, a second weight sensor 2 is provided between the anchor block 14 and one end of the support cable 19.
An electrical signal of 0 is displayed on the first support load meter 25 of the operation panel 23 via the control panel 22.

The control panel 22 includes a second opening/closing load meter 26 and a second opening/closing load meter 26.
The supporting load cell 27 is connected to the first opening/closing load cell 2.
4 and the first supporting load meter 25, so that detection can be performed here as well. The second opening/closing load cell 26 and the second support load cell 27 are operated by electric signals from the weight sensors 17 and 20, respectively, and act on the winch controller 30 via upper and lower limit contacts 28 and 29. It is configured like this. In addition, the first weight sensor 17 and the second weight sensor 2
A support opening/closing deviation meter 31 is provided which displays the difference between 0 and
It acts on the winch controller 30 via the lower limit contact 32.

The winch controller 30 can drive and stop the opening/closing rope winch 18 and the support rope winch 21 by operating the operation switch 33 on the operation panel 23. In this case, the support cable winch 21 and the opening/closing cable winch 18 are configured to be driven while always maintaining a constant relationship. For example, Bucket 4
When the rope is opened and descended while being supported by the support rope 19, when the support rope winch 21 is driven, the opening and closing rope winch 18 follows so that the opening and closing rope does not become excessively slack, and then the bucket 4 grabs the earth and sand and pulls it up. In this case, when the opening/closing winch 18 is driven,
The support cable winch 21 is configured to follow the support cable 19 to such an extent that the support cable 19 does not slacken excessively. Further, each of the upper and lower limit contacts 28, 29, and 32 acts on the winch controller 30 to control the corresponding winch when the value of the electric signal deviates from a preset value range. For example, upper limit/lower limit contact 28
When the upper limit value of is set to 20mA and the weight detected by the first weight sensor 17 is 5 tons, the
If the setting is made to generate a 20mA electric signal, the electric signal generated by the first weight sensor 17 will be
When the voltage exceeds 20 mA, the upper and lower limit contacts 28 are activated, acting on the winch controller 30, and by operating the operation switch 33, the opening/closing winch 18 is set in the direction of pulling the opening/closing rope 16 and hoisting the bucket 4. Even if you try to drive it, it will not work. This is because the weight applied to the first weight sensor 17 is 5 tons or more, so the electric signal generated by the first weight sensor 17 is more than the set value of 20 mA.

When using the above device, operate the operation switch 33.
Operate as follows.

(a) Winch 11 for moving ropes, winch 1 for traversing ropes
5 to move the carriage 12 suspending the bucket 4 to a predetermined position.

(b) Activate the support cable winch 21 and lower the bucket 4. In this case, the load including the weight of the bucket bag 4 is displayed on the first and second support load meters 25 and 27 by the electric signal emitted by the second weight sensor 20, and the electric signal emitted by the first weight sensor 17 Accordingly, the tension due to the own weight of the opening/closing cable 16 is displayed on the first and second opening/closing load meters 24 and 26. This shows that the bucket bag 4 is supported by the support cables 19 and the bag bag 4 is open.

(c) When the bucket 4 reaches the dam bottom, the support cable winch 21 stops. Each weight sensor 17,
The electric signal emitted by 20 has a value corresponding to the tension of each cable 16, 19, and is transmitted to the first and second support load cells 26, 27 and the first and second opening/closing load cells 2.
4 and 26 both display only the tension due to each rope's own weight. This shows that the bucket 4 has reached the bottom.

(d) To allow the bucket 4 to grab the earth and sand at the bottom of the dam, the winch 18 for opening and closing the cable is driven and the bucket 4 is pulled up. The first weight sensor 17 generates an electric signal proportional to the weight equivalent to the earth and sand (tension due to the rope's own weight + bucket weight + earth and sand weight), and the first and second opening/closing load meters 24 and 26 generate the load. is displayed. Second weight sensor 20
An electrical signal corresponding to the tension of the support rope 19 is generated and displayed on the first and second support load meters 25 and 27. As a result, the bucket 4 is closed and it can be seen that it is grasping the earth and sand.

(e) When bucket 4 is above the water surface, stop lifting at an appropriate height (Figure 2). The opening/closing load meters 24 and 26 show larger load values due to the decrease in buoyancy.

(f) Drive the traverse cable winch 15 to move the bucket suspended from the carriage 12 to a predetermined position.

(g) Drive the support cable winch 21 to lift the bucket 4.
The tank is opened and the soil is released (Figure 3). At this time, the values of the support load meters 25 and 27 indicate the value at which the bucket 4 is suspended, and the opening and closing load meters 24 and 26 indicate the value of the tension of the cable. This shows that the bucket 4 is open.

(h) Drive the traverse cable winch 15 and the movable cable winch 11 to move the bucket 4 to a predetermined position.

(i) Drive the support cable winch 21 again to lower the bucket 4.

Effects of the Invention As described above, according to the present invention, since each process can be seen by the display on the load cell, it is difficult to know when the bucket reaches the bottom of the dam and when to pull it up, unlike in the past. In addition, since you can clearly tell when it's time to pull up the bucket, you can now control the amount of soil you're grabbing at a constant level, and you can drive the winch accurately and quickly using the control panel, improving work efficiency. Since the winch is controlled based on the detection signal of an accurate weight sensor that directly detects the tension of the support rope, it is possible to prevent excessive loads from being applied, for example, further improving work safety. be able to.

[Brief explanation of drawings]

Figures 1 to 7 show one embodiment of the present invention, and Figures 1 to 3 show the entire earth and sand removal device, with Figure 1 being a plan view and Figures 2 and 3 being side views. Figure 2 shows the soil being picked up by a bucket and lifted up, and Figure 3 shows the soil being released. Figures 4 to 7 show how to hang each rope of the earth and sand removal device.
Figure 4 shows the movable rope, main rope and main rope tensioning device.
The figure shows the transverse cable, FIG. 6 shows the opening/closing cable, and FIG. 7 shows the supporting cable. 8 and 9 show electrical system diagrams of the present invention. 4... Bucket, 6... Main rope, 7... Tensioning device, 8... End block, 9... Strut, 10...
...Movable cable, 11... Winch for moving cable, 12...
Carriage, 13... Traversing cable, 14... Anchor block, 15... Traversing cable winch, 16...
Opening/closing cable, 17...First weight sensor, 18... Winch for opening/closing cable, 19... Support cable, 20... Second
weight sensor, 21... supporting winch, 23...
...Operation wall, 24...First opening/closing load cell, 25...
First supporting load cell, 26... second opening/closing load cell,
27...Second support load meter, 30...Winch controller, 33...Operation switch.

Claims (1)

[Claims] 1. A carriage is installed that can be moved freely while being guided by a main rope stretched from the right bank to the left bank, and a movable cable that moves the carriage along the main rope, and an opening/closing cable that opens and closes a bucket provided on the carriage. and a support cable that supports the bucket so that it can be raised and lowered,
One end of the opening/closing cable is fixed to one shore, and the other end is connected to a winch for the opening/closing cable installed on the other shore, and one end of the support cable is fixed to one shore, and the other end is connected to the other shore. A weight sensor is interposed at the fixed end side of the opening/closing cable and a fixed end side of the supporting cable, and each load is displayed based on the electric signal generated by each weight sensor. a winch controller for controlling the opening/closing rope winch and the supporting rope winch based on an operation signal from the operation panel and a detection signal from the weight sensor; A mobile track-type earth and sand removal device characterized by the following: