JPS6094864A - Method of detecting defective gripping and traction force of cable - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for detecting poor grip strength of a cableway, which is used in a circulation cableway.

Circulation type cableway guard, wrap the cable between the pulleys installed at the terminals at both ends. It is a means of transportation that transports large items or goods by moving rope grips along with the movement of the rope. There are fixed circulation cableways in which the rope is repeatedly circulated while the cable is held by a cable gripping machine, and there is a fixed circulation cableway in which the cable is repeatedly circulated while the cable is held by a cable gripping machine, and the other is a fixed circulation cableway in which the cable is held by a cable clamping machine when the carrier departs from a terminal and the cable is held by a cable gripping machine when it arrives at another terminal. There is an automatic circulation cableway that releases lightning.
In either case, the carrier and the cable are connected using a cable gripping machine.

As described above, rope gripping machines are important equipment for the safety of cableway operation, and various types of rope gripping machines have been developed to improve rope gripping performance, such as spring type, gravity type, screw set, or a combination of these. A rope gripping machine has been proposed and put into practical use. However, even with a rope gripping machine with excellent performance, in the unlikely event that the rope gripping force is poor due to long-term use or accidental causes, it is important to detect this and prevent the rope from leaving the cableway. This is a necessary condition from the standpoint of operational safety.

As one method for detecting defects in the rope gripping machine or its grip strength, for example, in an automatic circulation cableway, it is possible to install a device to check the quality of the rope gripping machine function in the forwarding route of the rope gripping machine in the terminal. , - It is also done to pass through this device every cycle to determine whether it is good or bad, and then transfer the rope gripping machine to the departure route, grip the rope, and depart. A rope gripping machine that functions well in the first place is based on a technical philosophy that assumes or expects that the IR rope gripping machine will operate normally and produce a normal rope gripping force, and it does not necessarily mean that the IR rope force will be normal. It doesn't necessarily mean that it is being demonstrated. For example, when a rope gripping machine performs a rope gripping operation,
An operation that involves some kind of operational displacement between the rope gripping machine component parts U is performed, and along with this, the 611,000 parts of the rope are acting, and in the event that this happens, the rope gripping machine is damaged. or
This is because poor movement may not necessarily result in poor grip strength.

For this reason, a judgment on the quality of the interceptor or the rope gripping force is made at the final stage after the rope gripper has completed the rope grip or after the rope has passed through the starting route and before departing for the cableway. Obviously, this is desirable.

As a detection method carried out at the final stage of the departure route of such a rope gripping machine, there are, for example, the following methods that have been conventionally used for automatic circulation cableways using spring type rope gripping machines.

That is, this is a method in which a detection device 5 as shown in FIG. 1 is provided in a route section after the search aircraft completes the rope grip in the terminal and before it departs onto the cableway track to perform detection. The detection device 5 is disposed on a moving path along which the rope gripping device 1 moves in the direction of arrow 3 along the rope 2, and a cantilevered detection lever 8 is pivotally mounted on a pin 7 of a fixed bracket 6. The vicinity of the tip of the detection lever 8 is elastically supported by a spring 9. Detection lever 8
An actuating piece 10 is fixed to the actuating piece 10, and the limit switch 11 is actuated by the actuating piece 10. Now, when the rope gripping machine with normal rope gripping force moves in the direction of the arrow 3, the release roller 4 of the rope gripping machine 1 moves against the guide surface 12 of the detection lever 8.
As shown in 4a, the elastic force of the spring (not shown) of the rope gripping machine 1 overcomes the spring 9, causing the detection lever 8 to be moved to J in 12a, as shown by the chain line. Press down and pass. However, when a defective rope gripping machine passes, rope gripping machine 1
The spring (not shown) cannot overcome the elastic force of the spring 9, so the release roller 4 moves along the curve of the guide 12 of the detection lever 8, and the release roller 4 moves as shown by the white line 4b. Although the detection lever 8 is pushed up to such a position and passes through, the detection lever 8 maintains the same position. Detection lever 8
Since the actuating piece 10 is fixed to the
The limit switch 11 is operated to determine whether the rope grip strength is good or bad.

In this conventional method, the pass/fail judgment is made at the final stage of the route where the rope gripping machine leaves for the cableway line, but in the end the rope gripping machine'
This is a method in which the elastic force of the spring 1 is opposed to the elastic force of the spring 9 to prompt the displacement of the detection lever 8, but it has the disadvantage that it cannot be used for anything other than an automatic circulation cableway using a spring-type rope grip. Ta. Furthermore, this detection method also has problems such as detection sensitivity when used for spring-type rope gripping machines, but apart from this, as mentioned above, the final detection method before the rope gripping machine departs for the cableway line. Despite the necessity and usefulness of determining whether grip strength is good or bad, a satisfactory device or method for this purpose has not been found.

The present invention has been made in order to improve the above-mentioned situation, and it is a spring-type Detection of rope gripping force failure of a cableway, which can be used not only with a rope gripping machine but also with any type of rope gripping machine, and which can be used regardless of whether it is an automatic circulation type cableway or a fixed circulation type cableway. This was done for the purpose of providing a method.

Corresponding to this object, the present invention provides a circular cableway in which a rope is gripped by a rope gripping machine and the rope gripping machine is moved along with the movement of the cable, in which the departure route of the rope gripping machine is operated. a suppression device that applies a resistance force to the movement of the rope gripping machine in a section along the line; and a delay detection device that detects whether or not there is a delay in the movement of the rope gripping machine with respect to the movement of the rope. The present invention provides a method for detecting poor rope grip strength of a cableway, characterized in that when the delay is detected, it is determined that the cable grip strength is poor using a device.

The method for detecting IR cable vise failure of a cableway according to the present invention will be explained below with reference to the drawings.

As shown in FIG. 2, the rope gripping device 21 completes the rope gripping at the rope gripping point 27 and moves in the direction of the arrow 23 as the rope 22 moves, and the suppressing device 30 is disposed along the covered elapsed section.

The pressing device 30 presses the bottle 3 onto the bracket 31 in a fixed position.
The pressing member 33 is pivotally mounted in a cantilevered manner through the spring 34, and the vicinity of the tip of the pressing member 33 is supported by a spring 34! It is a ζ thing.

The pressing member 33 has a guide surface 35 formed of an upwardly convex curved surface on which the rope gripper 21 comes into contact and slides.In particular, the ascending slope 36 of the guide surface 35 allows the rope gripper 21 to move in the direction of the arrow 23. It is intended to add resistance to.

In the LC embodiment shown in FIG. 2, a protrusion 24 is formed on the rope gripping device 21 so that the protrusion 24 comes into contact with the pressing member 33. 1, that is, when the rope gripper 21 moves in the direction of the arrow 23, the protrusion 24 comes into contact with the ascending slope 36 of the guide surface 35 of the pressing member 33, and advances while sliding on the guide surface 35. The guide surface 35 shown by the chain line resists the elastic force of the spring 34 due to the position 24a of the protrusion shown by the chain line.
Press down to position a and pass. When this is done, the protrusion 24 of the gripping rope m21 has a resistance force directed in the opposite direction to the arrow 23 due to the elastic force of the spring 34, that is, the resistance force of the rope gripping machine 21 A force acts that prevents movement. Since the rope gripping device 21 generates a gripping force by gripping the cable 22 using the -C friction force in the gripping part 26, when the above-mentioned resistance force acts on the rope gripping device 21, the gripping force is generated. If the cable force is poor, slippage will occur between the grip portion 26 and the cable 22. Of course, the spring 34 is
It is necessary to set the elastic force so as to obtain the required sensitivity for detecting poor grip strength.

In this way, if the rope gripping force of the rope gripping device 21 is poor, the movement of the rope gripping device 21 in the direction of the arrow 23 is delayed due to the sliding of the gripping portion 26 with respect to the movement of the rope 22 in the direction of the arrow 23. This will result in Further, a rope gripping machine with normal rope gripping strength moves at the same speed as the rope 22 without causing the above-mentioned stretch.

If the above-mentioned suppression device is provided, then if the movement of the rope gripping machine 21 is compared with the movement of the rope 22 and detects whether there is a delay, then 1) it is possible to determine whether there is a defect in the J vise. It is possible to

The following method can be used to detect whether there is a delay in the movement of the rope gripping machine 21.

In the first embodiment, in FIGS. 3(a) and 3(b), the pressing device 30 is placed in the middle along the moving path of the rope gripping device 21, and a passage detector is placed at a position after 1)a. 40 and 4
1, and the distance between the passing detectors 40 and 41 is A.
Let Δ be the test section 42.

The passage detector 40141 uses, for example, a proximity switch to detect when the rope gripping machine 21 has passed through the corresponding area 1u and generates a signal. Now, if the operating speed of the cable 22 is ■, then
The time required for an arbitrary point of the cable 22 to pass through the test section 43 (t = A/V).
The timer block starts counting from the time when the rope passes by and issues a signal, and the timer block's time measurement t1 from the time when the rope grip machine 21 passes the position of the other passing detector 41 and issues a signal is t 1 = t. If there is, there is no delay in the movement of the rope 22 in the rope gripping machine 21, and therefore, there is no slippage between the gripping rope eI 21 and the rope 22, and it can be determined that the search power is good. If tl>t, the rope gripping machine 21 is delayed with respect to the movement of the cable 22, and therefore, slipping occurs between the rope grasping machine 21 and the cable 22. In this case, it is determined that the rope gripping force is poor, and relay RY can be used to turn off the power to prevent the rope gripping machine from departing into the cableway.

The delay detection device 43 using such passage detectors 40 and 41 can detect the progression of the cord-like movement.

The delay detection device of the second embodiment is shown in FIG.
) As shown in (b), passing detectors 40, 41 are disposed at positions before and after the pressing device 30 is sandwiched in the middle along the moving route of the cable rigging machine 21, and the passing detectors 40, 414
Distance between i, '1ffi 1!11. A to death 1 section 4
2, and generates a pulse signal every time the cable 22 moves by a constant value. , is counted using a counter C while an arbitrary point of the cable 22 passes the passing detector 40 position and passes another passing detector 41 position while passing the distance IIItA of the dest section 42 of C. The number N of pulse signals is N-Δ/1-.The counter C starts counting from the time when the rope gripping machine 21 passes the passage detector 40 position C and emits a signal. If the sub-value N1 of the counter C up to the time when the signal is emitted after passing through the cable 414 is N1≦N, the rope gripping machine 21 moves forward with the rope 22 without any delay and therefore grips the rope. There is no sliding between the rope 21 and the rope 22, and the rope gripping force can be determined to be good, but if N1 > N, the rope gripping device 21 is delayed with respect to the advancement of the rope 22. Therefore, the rope gripping machine 21 is slipping between it and the cable 22, and in this case, it is determined that the rope gripping force is poor, and the power is cut off by relay RY, and the rope gripping machine is moved along the cableway. It is possible to prevent them from leaving.

Although the purpose can be achieved by using the delay detection device of the first and second embodiments, the delay detection device 43 of the first embodiment is suitable for cableway equipment with constant speed. The delay detector 43' of the second embodiment can also be used in the case of cableway equipment with variable operating speed.

Above)'1. In the explanation, the protrusion 24 is provided on the rope gripping machine 21 so as to come into contact with the pressing member 33, but the shape of the protrusion 24 can be changed as long as it provides resistance to the movement of the rope grasping machine 21. , it is possible to have a shape other than that shown in the drawings, and in place of the protrusion 24, the 11. !
It is also possible to use the I fixed point as a contact point with the pressing member 33.

In addition, if it is necessary to prevent the protrusion 24 from coming into contact with the pressing member 33, friction due to sliding or wear, etc., the protrusion 24 and the guide surface 35 of the pressing part 1A 33 should be made of reduced W, friction material, or wear-resistant material. Alternatively, a guide surface 35 may be used instead of the protrusion 24.
It is also possible within the scope of the present invention to use a cola, etc., as long as it provides resistance to the movement of the rope gripping machine 21.

Furthermore, the above explanation is for the case of various types of rope gripping machines in general, but when applied to a cableway using a spring-type rope gripping machine, the spring of the rope gripping machine can be used instead of the protrusion. Control 'CI
+'7 It is also possible to refer to the rollers used for wandering as the contact transfer points with the kite surface.

In this way, the method of the present invention determines whether the gripping force is good or bad, which is a comprehensive evaluation of the function and gripping condition of the rope 1, in the vicinity of the position immediately before the rope gripping machine finishes the rope gripping operation and leaves for the cableway. As long as the rope gripping device grips the rope by friction with its gripping device, it may be of the spring type, a set of screws, a gravity type, or a combination thereof. It is a method that can be applied to both automatic circulation cableways and fixed circulation cableways, and can contribute to the safe operation of circulation cableways. It is.

[Brief explanation of drawings]

FIG. 1 is a side view illustrating a conventional method for detecting poor grip strength;
FIG. 2 is a side view of a pressing device used in the method for detecting poor grip strength of the present invention, and FIG. figure,
In FIG. 3, (b) is a system diagram corresponding to the first embodiment of the delay detection device used in the method for detecting poor grip strength of the present invention, and FIG. A side view of the second embodiment of the delay detection device used in the detection method, and FIG.
) is a system diagram of a second embodiment of the delay detection device used in the method for detecting poor rope grip strength of the present invention. 1... Rope grip machine 2... Rope 3... Arrow 4...
- Opening [1-ra 7'Ia', 4b... Release roller position 5... Detection device 6... Bracket 7...
Bin 8...Detection lever ε3a...Detection lever position 9...Spring 10...Operation)'ill...Limit switch 12...Kataido surface 21...Lock gripping machine 22. ... Cable 23 ... Arrow 24 ... Convexity 24
a... Protrusion position rf 26... Gripping part 27...
Grip point 30... Tapping device 31... Bracket 3
2... Pin 333... Pressing part jrA34... Spring 35... Guide surface 35a... Guide surface position 3
6... Upper boundary slope 40... Passage detector 41...
Passage detector 42...Test section 43...Delay detection device /133'...iIy delay detection device 44.
... Cable transfer 8m detector King... Timer C... Counter RY... Relay Patent applicant (" Haruo Kawai, Patent Attorney, Hon Cable Co., Ltd.)

Claims (1)

[Claims] In a circulating cableway operated by gripping a rope with a rope gripping machine and moving the rope as the rope moves, the cableway is connected to the IR rope in a section along the departure route of the rope gripping machine. The delay is detected by using a pressing device that applies a resistance force to the movement of the rope gripping device, and a delay detection device that detects whether the movement of the rope gripping device is reciprocal with respect to the movement of the rope. A method for detecting poor grip strength on a cableway, characterized in that when the grip strength is determined to be poor when the grip strength is poor.