JP2007162443A - Looseness detecting and warning device for auger intermediate steady brace hanging material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To carry out safe work by warning a worker to pay attention to a sudden fall when an intermediate steady brace suspended from an auger is in a state of being caught and stopped. <P>SOLUTION: This looseness detecting and warning device comprises a means for detecting the looseness of a hanging material for the intermediate steady brace, a means for detecting that the intermediate steady brace is lowered and held on a lower steady brace, and a means for sending out a warning when detecting the looseness of the handing material while the intermediate steady brace is not on the lower steady brace. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a detection warning device for warning an abnormal fall of an intermediate swing suspended from a auger by a suspension member.

Conventionally, in order to increase the excavation accuracy of excavation work, a fixed lower brace and an intermediate brace that is hung from the auger by a hanging material and descends by its own weight have been used as a rod brace.
This intermediate brace is relatively lightweight, and when a load such as bending of the rod connected to the lower end of the auger is applied, it may not be able to descend due to its own weight but may stop in a state of being caught in the middle.
At that time, even if the auger is lowered, the suspension material is folded and stored in the intermediate suspension suspension material receiving box, for example, when the suspension material is a chain. It is difficult, and when the work is performed directly under the intermediate swing in that state, there is a risk that the intermediate swing will unexpectedly fall due to the slack of the hanging material and hit the worker directly. there were.

  Therefore, the present invention is to provide a warning to an operator by performing lighting of a lamp (patlight) or an alarm buzzer so that a safe work can be performed when the intermediate swing is stopped in a caught state.

The means to solve the above problem is
A detection warning device for warning an abnormal fall of an intermediate brace suspended from an auger with a suspension material,
Means for detecting looseness of the suspension material of the intermediate brace;
Means for detecting that the intermediate swing is lowered and deposited on the lower swing;
And a means for issuing a warning when the slack of the suspension member is detected when the intermediate swing is not on the bottom strut, and an auger intermediate swing suspension member slack detection warning device.

  That is, according to the auger intermediate suspension hanging material slack detection warning device of the present invention, there is no risk of dropping the intermediate suspension when the intermediate suspension is lowered to the lower suspension and the suspension is loose. However, if the intermediate auger is stopped while it is caught on the leader rail, the auger intermediate baffle suspension material can detect and detect only slack, and a warning is issued at that time. Attention is drawn and work can be done safely.

  According to the present invention, even if the intermediate swing is stopped in a state where it is caught on the leader rail in some situation, a warning is given to the operator in advance, so there is a danger from the unexpected fall of the intermediate swing. Can be avoided.

  Hereinafter, an embodiment of the auger intermediate swing suspension material slack detection warning device according to the present invention will be described in detail with reference to FIGS. 1 to 4.

As shown in FIG. 1, the intermediate brace 5 has left and right brackets 1 a and 1 b at the lower end of the auger 1 that freely moves up and down along the rail 3 of the leader 2 (in the past, an intermediate brace suspension chain is suspended here. The upper ends of the chain slack detection devices 8 and 8 are attached to the chain slack detection devices 8 and 8 by the chains 7a and 7b, respectively. Limit switches 8a and 8b having springs 20 adjusted so as to be balanced are incorporated.
The lower brace is hung from a top sheave (not shown) at the upper end of the reader 2 by a lower brace hanging wire 6, and a bellows for preventing scattering of earth and sand adhering to the rod 12 is placed on the upper part of the lower brace 4. 13 is provided.
When the intermediate brace 5 is entrusted to the bellows 13, the limit switch 9 for detecting the distance between the brace provided on the upper end of the lower brace mounting slide bracket 15 is pressed by the lower end of the intermediate brace mounting slide bracket 16. It has a structure that turns on.
A warning patrol light 10 and / or an alarm buzzer 11 are provided at the front portion of the base machine 14 when the intermediate detent 5 is stopped in a hooked state.

  As shown in FIG. 2, the auger intermediate vibration suspension slack detection warning device as a whole circuit has a current signal of limit switches 8a and 8b arranged in series by a relay 18 and detection of distance between vibrations. The current signal of the limit switch 9 is received by the relay 19, and the relays 18 and 19 are arranged in series and connected to the warning patrol light 10 and / or the alarm buzzer 11.

In this embodiment, the limit switch 8a, 8b that operates when the load applied to the spring 20 is equal to or less than the load of the chain 7a, 7b is taken as an example of a means for detecting slack of the suspension member of the intermediate swing 5 However, other detectors such as a load meter may be used, and a detector for detecting a state in which the intermediate brace 5 is left in the lower brace 4 is the same.
Further, in this embodiment, the chains 7a and 7b are used as the suspension members of the intermediate swing 5; however, the advantage is that when the intermediate swing is left in the lower swing and the auger is further lowered, the intermediate swing is stopped. This is because it is not necessary to process the chains 7a and 7b remaining in the form of being folded in the chain receiving box 17 provided in 5, and wires or the like may be used.

Next, the operation of the above embodiment will be described with reference to FIGS.
As shown in FIG. 1, in order to improve excavation accuracy, a fixed lower brace 4 and an auger suspended from a top sheep (not shown) at the upper end of the leader 2 as a brace by a suspension member 6 as a brace of the rod 12. The excavation work is started using an excavator having an intermediate brace 5 that is suspended from 1 by suspension members 7a and 7b and descends by its own weight.
At this time, the intermediate detent 5 is set at a predetermined position near the middle between the lower end of the auger 1 and the upper end of the lower detent 4, and the rod 12 is embedded in a state in which the vertical accuracy is enhanced by three-point support. It will be.
As the rod 12 is inserted, the intermediate brace 5 descends on the rail 3 of the leader 2 toward the lower brace 4 by its own weight, and is deposited in the intermediate bracelet buffer bellows 13. In this state, the auger is further lowered, and the embedding operation is performed until the upper end of the rod 12 reaches the upper end of the intermediate swing 5.

  When the intermediate brace 5 descends in a normal state, the chains 7a and 7b that suspend the intermediate brace 5 from the lower end of the auger 1 are as shown in FIG. Since the tension switches 8a and 8b are in the ON state, the patrol light 10 and / or alarm buzzer 11 line of the relay 18 shown in FIG. 2 is opened, and there is no lighting or buzzer. .

  On the other hand, if the intermediate detent 5 stops for some reason when it is caught on the rail 3 of the leader 2, the state of the chain 7a on one side is as shown in FIG. A part of the box 17 is loosely deposited and the load applied to the spring 20 of the chain slack detecting device 8 is less than the load of the chains 7a and 7b. Therefore, the limit switches 8a and 8b are pushed up and turned off. Thus, the patrol light 10 and / or the alarm buzzer 11 line of the relay 18 shown in FIG.

  The chain slack detection device 8 may be attached to either one of the chains 7a and 7b. However, when only one of the chain is tilted to the left or right, the fall distance is small. Even though the intermediate detent 5 is relatively light, the impact on a person cannot be ignored. Therefore, it is better to attach the chain slack detecting device 8 to both the chains 7a and 7b.

Next, with the insertion of the rod 12, the intermediate brace 5 descends on the rail 3 of the leader 2 toward the lower brace 4 by its own weight, and the bellows 13 for preventing the scattering of earth and sand adhering to the rod 12 are provided. When deposited, the chains 7a and 7b are loosely deposited in the chain receiving box 17, and the risk of dropping the intermediate swing 5 is eliminated.
Therefore, when the chains 7a and 7b are slackened in this state, as shown in FIG. 4B, the limit switch 9 for detecting the distance between the anti-vibration attachments provided at the upper end of the lower anti-vibration attachment slide fitting 15 By pressing down the lower end of the slide metal fitting 16, it is turned on, the patrol light 10 and / or alarm buzzer 11 line of the relay 19 shown in FIG. 2 is opened, and there is no lighting or buzzer.

  Thus, by using the device of the present invention, the lighting of the patrol light 10 and the alarm buzzer 11 are sounded only when the intermediate brace 5 is caught and stopped in the middle until the lower brace 4 is deposited. Therefore, the worker can perform the safe work with caution only when the warning is given.

The side view of the auger machine with which the warning device of this invention was attached. The circuit diagram of the warning device of the present invention. The chain slack detection apparatus conceptual diagram of this invention. The limit switch action | operation conceptual diagram for the distance detection between tremors of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Auger 1a, 1b Bracket 2 Leader 3 Rail 4 Lower swing 5 Intermediate swing 6 Lower swing suspension wire 7a, 7b Intermediate swing suspension chain 8 Chain slack detection device 8a, 8b Limit switch 9 Limit for detecting distance between swings Switch 10 Patrite 11 Buzzer 12 Rod 13 Bellows 14 Base machine 15 Lower swing mounting slide bracket 16 Intermediate swing mounting slide bracket 17 Chain receiving box 18, 19 Relay 20 Spring

Claims (1)

A detection warning device for warning an abnormal fall of an intermediate brace suspended from an auger with a suspension material,
Means for detecting looseness of the suspension material of the intermediate brace;
Means for detecting that the intermediate swing is lowered and deposited on the lower swing;
An auger intermediate swinging suspension slack detection warning device, comprising: means for issuing a warning when the intermediate swinging is not on the lower swinging and slackening of the suspension is detected.