JPH05345566A - Spring abnormality detecting structure of rope grasping device of automatic circulation type ropeway - Google Patents

Abstract

PURPOSE:To monitor the condition of coil springs constantly and to secure the safety of a rope grasping device by composing the system to detect the abnormal condition of the coil springs, in which a detecting rod is displaced by the direct movement following the abnormal condition of the coil springs, and a detecting lever is displaced, when the elastic restoring force of the coil springs is reduced owing to the abnormal condition. CONSTITUTION:When a main spring 10 and an auxiliary spring 9 which use coil springs to obtain the rope grasping force of a rope grasping device generate a breaking or a setting so as to reduce the elastic restoring force, the main spring 10 and the auxiliary spring 9 are compressed to the position to keep the balance with the elastic restoring force of a detecting spring 9 which is installed to generate an arraying relation in series with the main spring 10 and the auxiliary spring 9, through a spring seat 12 and a receiving seat 7 fixed to a sliding box body 11. Following such a condition, a detecting rod 8 is displaced moving directly in the direction of the arrow 29, and a detecting lever 15 is fluctuated and displaced in the direction of the arrow 30 making hinge pins 23 and 23 as the center, by the operating claw 20 fixed to the detecting rod 8, and the detecting lever 15 is moved from the normal position 15A to the abnormal position 15B, so as to display the abnormal condition of the main spring 10 and the auxiliary spring 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gripping device for an automatic circulation type ropeway, in which the elastic restoring force of a compressed coil spring is used to obtain the gripping force of a rope, and That is, the present invention relates to a spring abnormality detecting structure of a gripping device for detecting a decrease in gripping force.

[0002]

2. Description of the Related Art In an automatic circulation cableway, ropes are stretched between pulleys pivotally installed at both ends of the cable carriage to make a high-speed circulatory movement. Gripping the rope, the transporter moves at high speed as the rope moves, and at the stops at both ends, the gripping device of the transporter releases the rope and the transporter travels on the rail line installed at the stop. Then, acceleration-deceleration transfer and low-speed forward transfer are performed. In the gripping device of the carrier used for such an automatic circulation type cableway, most of them have a structure in which the elastic restoring force of a compressed spring is used to obtain the gripping force. As described above, in the gripping device of the automatic circulation type cableway, the movements of gripping and releasing are performed for each circulating loop at each stop, and accordingly, the compression is also performed for the spring. And the distraction operation is repeated each time.

[0003]

Therefore, if the spring for obtaining this gripping force is broken or so-called'fatigue 'occurs and the restoring force of the spring, that is, the gripping force on the cord is reduced, the gripping force is reduced. It is very dangerous because slippage occurs between the rope device and the rope and the transporters collide with each other, and in the worst case, the gripping device comes off the rope and the transport equipment falls on the ground. In order to prevent such a serious accident, it is desired to accurately and surely detect the abnormality of the spring of the gripping device, and conventionally, various methods or structures for detecting the abnormality of the spring have been proposed. There is. The present invention has been made to solve the same problem.

[0004]

In order to solve the above-mentioned problems, a swing block having the other grip is pivotally attached to a clip block having the other grip by a connecting pin. Further, there is provided a gripping device for an automatic circulation type cableway, in which a coil spring for obtaining gripping force is mounted between the clip block and the swing clip, the spring being for detecting an abnormality of the coil spring. The abnormality detection structure includes a detection spring arranged in series with the coil spring, a detection rod that is displaced in accordance with the extension of the detection spring, and a detection lever that is rockably displaced by being locked to the detection rod. When the elastic restoring force is reduced due to the abnormal shape of the coil spring, the detection spring extends until the coil spring is in equilibrium, and the detection rod follows and is displaced linearly. If Eggplant to detect the abnormality.

[0005]

The spring seat is pivotally mounted on the clip block, and the spring support block is pivotally mounted on the rocking clip to slidably mount the spring seat. Also, from the spring seat on the clip block side, a tubular sliding guide is fixedly extended,
The tubular sliding housing is fixedly extended from the spring seat of the rocking clip and slidably fitted to the sliding guide. Further, a receiving seat is fixed to one end of the sliding housing on the swing clip side so as to cover the sliding housing, and a detection rod is mounted on the central axis so as to penetrate therethrough. A detection spring is attached to the outer circumference of the detection rod.
One end is brought into contact with a seat fixed to the above-mentioned sliding housing, the other end is brought into contact with a spring receiving block, and is compressed and attached. Further, a detection lever having a notch portion is pivotally attached to the spring receiving block on the swing clip side so as to be rotatable. Next, a working claw is fixed to the tip portion of the detection rod projecting from the spring receiving block and is engaged with the notch formed in the detection lever. In the spring anomaly detection structure configured in this way, for example, if the coil spring for obtaining the gripping force is broken or so-called'fatigue 'occurs and the elastic restoring force decreases,
The coil spring is compressed until it is in equilibrium with the elastic restoring force of the detection spring, and the spring seat moves via the sliding housing and seat following this, and at the same time, the detection is carried on the central axis. The rod is also relatively displaced in the longitudinal direction with respect to the spring bearing block, and the detection lever pivotally mounted on the spring bearing block is pivotally displaced by the action claw fixed to the detection rod to display the abnormal state of the coil spring.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an automatic circulation type ropeway gripping device 1 according to the present invention.
The partial side view of FIG. At the left end of the clip block 2 in the drawing, a grip portion 2a for forming a concave semi-circular surface having the same diameter as that of the cord 40 for gripping the cord 40 is formed. A rod-shaped suspension rod 18 is fixedly extended in the horizontal direction from the right side in the figure opposite to the grip 2a, and an end roller 19 is rotatably attached to the tip of the suspension rod 18. Usually, a head of a suspender (not shown) of a carrier is swingably pivotally attached to the suspension rod 18 to suspend a chair or a passenger car for passengers to board. next,
The connecting pin 2 is provided on the upper part of the grip 2a of the clip block 2.
At 2, the swing clip 3 is pivotally attached so as to swing in the direction of the arrow 27 or the arrow 28. Since the swing clip 3 also grips the cord 40 by pairing with the grip 2a of the clip block 2, a concave semicircle having the same diameter as the cord 40 is provided at a position facing the grip 2a. The grip part 3a having an arcuate surface is formed.
Next, as shown in FIG. 2, the clip block 2 described above is used.
Between the spring bearing block 5 pivotally mounted on the side and the spring bearing seat 12 mounted on the spring bearing block 13 pivotally mounted on the rocking clip 3 side, the coil spring having a spiral shape for obtaining gripping force. Then, the main spring 10 and the auxiliary spring 9 are compressed and mounted.

Next, as shown in FIGS. 3 and 4, in the swing clip 3, the end portions of the arm portions 3b, 3b on the opposite side with the grip portion 3a and the connecting pin 22 sandwiched between them are “co” in plan view. The roller shaft 17 is bent in a letter shape, and the roller shaft 17 is fixedly extended from the end surface by a nut 17a, and the roller 16 is rotatably attached to the roller shaft 17 in a rotatable manner. Further, at a position adjacent to the roller 16, the bent arm portions 3b, 3b of the swing block 3 are provided.
The spring receiving block 13 is pivotally attached to the flange portions 13a, 13a so as to be vertically swingable by the pins 21, 21 extending from the respective side surfaces of the arm portions 3b, 3b so as to be sandwiched by. Further, the spring bearing block 13 is provided with the spring bearing seat 12 so as to be slidable in the long axis direction. Further, from the spring seat 12, a cylindrical sliding housing 11 is coaxial with the central axis.
Is fixedly extended toward the clip block 2 side, and the receiving seat 7 is fixed to the tip end portion like a lid. Next, a cylindrical sliding guide 6 is also concentrically extended from the spring receiving block 5 pivotally attached to the clip block 2 toward the arm portions 3b, 3b side of the swing clip 3, and the above-mentioned sliding is performed. The movable housing 11 is slidably installed so that the main spring 10 and the auxiliary spring 9 are always compressed in the longitudinal direction even when the swing clip 3 swings during gripping or releasing. ing.

Further, one end of the detection rod 8 is attached to the above-mentioned receiving seat so as to pass through the central axis of the sliding housing 11, and the other end thereof penetrates through the center of the spring receiving block 13 to make the spring. The receiving block 13 is supported so as to be slidable in the axial direction. Further, the action claw 20 is fixed to the end portion of the detection rod 8 protruding from the spring receiving block 13 described above. Further, one end of the outer periphery of the spring receiving block 1 is brought into contact with the receiving seat 7 of the sliding housing 11 and the other end of the spring receiving block 1 is wrapped around the detection rod 8.
The detection spring 14 abutting on the seat 3 and the seat 7 and the spring receiving block 1
Install by compressing between 3 pieces. That is, the detection spring 14 is arranged in series with the main spring 10 and the auxiliary spring 9 via the spring seat 12, the sliding housing 11 fixed to the spring seat 12, and the seat 7.

On the other hand, as shown in FIGS. 4 and 5, the flange portion 13a formed on the spring receiving block 13 described above,
The hinge pins 23, 23 are fixedly extended from the adjacent positions of the positions supported by the pins 21, 21 of 13a so as to face inward, and the detection lever 15 is rotatably pivoted on the hinge pins 23.23. To wear. Further, a cutout portion 15a is formed in the detection lever 15 to lock the working claw 20 fixed to the end portion of the detection rod 8 described above. When the detection rod 8 is linearly displaced in the direction of the arrow 29 in this way, the detection lever 15 swings in the direction of the arrow 30 about the hinge pins 23.

Now, as shown in FIGS. 2 and 5, the main spring 10 and the auxiliary spring 9 using the coil spring which obtains the gripping force of the gripping device 1 are broken or so-called “sag” occurs. When the elastic restoring force decreases, the main spring 10 and the auxiliary spring 9
The main spring 10 and the auxiliary spring 9 up to a position in equilibrium with the elastic restoring force of the detection spring 14 mounted so as to be arranged in series via the spring seat 12 and the receiving seat 7 fixed to the sliding housing 11. Is compressed, and the detection rod 8 moves with the arrow 2
9, the detection lever 15 swings in the direction of the arrow 30 about the hinge pins 23, 23 by the action claw 20 fixed to the detection rod 8 by linearly displacing the normal position 15A.
To the abnormal position 15B from the main spring 10 and the auxiliary spring 9
Display abnormalities in.

[0011]

According to the spring anomaly detecting structure of the gripping device for the automatic circulation type ropeway of the present invention, the spring receiving block is pivotally attached to the swinging clip which swings to grip or release the cord to grip. The detection spring is compressed and mounted through the spring seat, the sliding housing fixed to the spring seat, and the seat so that the main spring for obtaining the rope force is arranged in series. A detection rod is attached to the so as to pass through the central axis of the sliding housing. Thus
When an abnormality occurs in the main spring and the elastic restoring force, that is, the gripping force decreases, the detection rod is linearly displaced through the spring seat to a position where the elastic restoring force of the main spring and the elastic restoring force of the detection spring are balanced. The linear displacement of the detection rod is enlarged and displayed on the swing displacement of the detection lever via the action claw. Thus, even a slight abnormality of the main spring can be easily confirmed, and the abnormality of the main spring can be detected when the gripping device is in the gripping state or the releasing state. Therefore, the state of the main spring for obtaining the gripping force, which is an important part of the gripping device, is constantly monitored,
This has the effect of ensuring the safety of the lanyard device.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional side view of a gripping device incorporating a spring abnormality detecting structure of the present invention.

FIG. 2 is a partial cross-sectional side view showing a mounted state of a main spring, an auxiliary spring, and a detection spring of the gripping device of the present invention.

FIG. 3 is a plan view showing a portion of the spring abnormality detecting structure of the gripping device of the present invention.

FIG. 4 is a partial cross-sectional side view of the spring abnormality detecting structure of the gripping device of the present invention.

FIG. 5 is a partial cross-sectional side view showing a state in which the spring abnormality detecting structure of the gripping device of the present invention is operated.

[Explanation of symbols]

 1 Grip device 2 Clip block 2a Grip part 3 Swing clip 3a Grip part 3b, 3b Arm part 4 Connecting pin 5 Spring seat 6 Sliding guide 7 Receiving seat 8 Detecting rod 9 Auxiliary spring 10 Main spring 11 Sliding casing Body 12 Spring seat 13 Spring receiving block 13a, 13a Flange portion 14 Detection spring 15 Detection lever 15a Cutout portion 15A Normal position 15B Abnormal position 16 Roller 17 Roller shaft 17a Nut 18 Suspension rod 19 End roller 20 Working claw 21,21 Hinge pin 22 Connecting pin 23,23 Hinge pin 25,26,27 Arrow 28,29,30 Arrow 40 Rope

Claims (1)

[Claims] 1. A clip block having one grip part is pivotally attached to a swing clip having the other grip part via a connecting pin, and a grip is provided between the clip block and the swing clip. A gripping device for an automatic circulation type cableway, which is configured by mounting a coil spring for obtaining a rope force, wherein a spring abnormality detecting structure for detecting an abnormality of the coil spring is a detection spring arranged in series with the coil spring. A detection rod that is displaced in accordance with the extension of the detection spring and a detection lever that is engaged with the detection rod and swingably displaced. When the elastic restoring force decreases due to the abnormal shape of the coil spring, the detection spring Is extended until the coil spring is in equilibrium with the coil spring, the detection rod follows the linear displacement, and the detection lever is oscillated and displaced to detect the abnormal state of the coil spring. Self Spring abnormality detecting structure of Nigisaku device circulating cableways.