WO2022201390A1 - Holding system - Google Patents

Abstract

A holding system (16) comprises, for example, a holding tool (30), a fixture (50), and a detector (60). The holding tool (30) holds the end of a rope (4) for suspending an object. As an example, the object is an elevator car (1). The fixture (50) is provided on the portion of the rope (4) which extends from the holding tool (30) to the object side. The detector (60) detects the displacement of the fixture (50) relative to the holding tool (30) in the direction along the axis of the rope (4).

Description

retention system

The present disclosure relates to a retention system for retaining rope ends.

Patent Document 1 describes a device for holding the end of a rope. The device described in WO 2005/030002 comprises a block attached to the end of the rope. Abnormalities in the holding of the rope 4 are detected based on the electrical signal from the block.

Japanese Patent No. 5572756

In the device described in Patent Document 1, a block is attached to the end of the rope. Therefore, if the rope does not slip such that it slips out of the device, no abnormality is detected. The device described in Patent Document 1 is a technology mainly for detecting breakage of the rope, and there is a problem that the detection accuracy is low for an abnormality related to the holding of the rope.

The present disclosure was made to solve the problems described above. SUMMARY OF THE INVENTION An object of the present disclosure is to provide a holding system for holding an end of a rope, which is capable of accurately detecting anomalies in rope holding.

A holding system according to the present disclosure includes a holder that holds an end of a rope for suspending an object, a fixture that is provided on a portion of the rope that extends from the holder toward the object, and a fixture that attaches to the holder. a detector for detecting relative displacement along the axis of the rope.

A holding system according to the present disclosure includes a holder that holds an end of a rope for suspending an object; and a detector for detecting relative displacement in a direction along.

A holding system according to the present disclosure is a system for suspending an object with a plurality of ropes. The holding system includes a first sensor unit and a second sensor unit, a string-like member to which the first sensor unit is connected, and a measuring device that detects a change in the position of the second sensor unit with respect to the first sensor unit. , provided. For each of the plurality of ropes, a holder that holds an end of the rope, and a fixture provided on a portion of the rope that extends from the holder toward the object side are provided. In the string-like member, the position of the second sensor portion with respect to the first sensor portion remains the same regardless of which rope among the plurality of ropes the fixture is relatively displaced with respect to the holder in the direction along the axis of the rope. stretched to change.

A holding system according to the present disclosure includes, for example, a holder, a fixture, and a detector. A retainer holds the end of the rope for suspending the object. The fixture is provided on a portion of the rope that extends from the holder toward the object. A detector detects displacement of the fixture relative to the retainer in a direction along the axis of the rope. With the holding system according to the present disclosure, it is possible to accurately detect anomalies in rope holding.

It is a figure which shows the example of an elevator apparatus. FIG. 4 is a perspective view showing an end of a rope; FIG. 3 is a cross-sectional view taken along line AA shown in FIG. 2; 4 is an enlarged view of a B portion shown in FIG. 3; FIG. 1 is a front view showing an example of a holding system according to Embodiment 1; FIG. FIG. 2 is a side view showing an example of a holding system according to Embodiment 1; 7 is a cross-sectional view taken along line CC shown in FIG. 6; FIG. FIG. 11 is a cross-sectional view showing an example of a holding system according to Embodiment 2; FIG. 11 is a cross-sectional view showing an example of a holding system according to Embodiment 3; FIG. 11 is a cross-sectional view showing an example of a holding system according to Embodiment 4; FIG. 12 is a cross-sectional view showing another example of the holding system in Embodiment 4; FIG. 11 is a cross-sectional view showing an example of a holding system according to Embodiment 5; FIG. 21 is a cross-sectional view showing an example of a holding system according to Embodiment 6; FIG. 21 is a side view showing an example of a holding system according to Embodiment 7; FIG. 15 is a cross-sectional view taken along line DD shown in FIG. 14; FIG. 22 is a front view showing another example of the holding system according to Embodiment 7; FIG. 22 is a front view showing another example of the holding system according to Embodiment 7; FIG. 11 is a front view showing another example of a holder; FIG. 19 is a cross-sectional view taken along line EE shown in FIG. 18;

A detailed description is given below with reference to the drawings. Duplicate descriptions are appropriately simplified or omitted. In each figure, the same reference numerals denote the same or corresponding parts.

Embodiment 1.
FIG. 1 is a diagram showing an example of an elevator device. The elevator system comprises a car 1 and a counterweight 2. The car 1 moves up and down in the hoistway 3 . A counterweight 2 moves up and down the hoistway 3 . The hoistway 3 is a vertically extending space formed in the building. A car 1 and a counterweight 2 are suspended in a hoistway 3 by ropes 4 .

A pair of guide rails 5 are provided vertically on the hoistway 3 . Movement of the car 1 is guided by guide rails 5 . A pair of guide rails 6 are provided vertically in the hoistway 3 . The movement of the counterweight 2 is guided by guide rails 6 .

The hoist 7 includes a drive sheave 8, a motor 9, and a brake 10. A drive sheave 8 is fixed to the drive shaft of the motor 9 . A brake 10 holds the drive sheave 8 stationary. The rope 4 is wound around the drive sheave 8 and the deflector sheave 11 . When the drive sheave 8 is rotated by the motor 9 , the car 1 is moved via the rope 4 . The hoist 7 is an example of a device that drives the car 1 . Although the elevator device has a plurality of ropes 4, only one rope 4 is shown in FIG. 1 to simplify the description.

The control device 12 controls the hoist 7. The movement of car 1 is controlled by control device 12 .

Fig. 1 shows an example of a 1:1 roping elevator system. In the example shown in FIG. 1 , a machine room 13 is provided above the hoistway 3 . The hoist 7 and the control device 12 are provided in the machine room 13 . The deflection wheel 11 is rotatably provided in the machine room 13 . As another example, the hoisting machine 7 and the control device 12 may be provided in the hoistway 3 . The hoisting machine 7 may be provided at the top of the hoistway 3 or may be provided in the pit of the hoistway 3 . A 2:1 roping scheme may be employed in the elevator system.

The car 1 includes a car room 14 and a car frame 15. The cab 14 forms a space for passengers to board. The car frame 15 supports the cab 14 . In the example shown in FIG. 1, one end 4a of the rope 4 is connected to the car frame 15 via a retaining system 16. In the example shown in FIG. The other end 4b of the rope 4 is connected via a retaining system 17 to the frame (not shown) of the counterweight 2. As shown in FIG. If the elevator installation adopts the 2:1 roping method, the ends 4a of the ropes 4 are connected to the machine room 13 or the fixed body of the hoistway 3 via the retaining system 16; The ends 4b of the ropes 4 are connected to the machine room 13 or to the fixed body of the hoistway 3 via a retaining system 17 .

FIG. 2 is a perspective view showing the end portion 4a of the rope 4. FIG. FIG. 3 is a cross-sectional view taken along line AA shown in FIG. The rope 4 is a flat belt type rope. The width dimension of the rope 4 is larger than the thickness dimension. As an example, the rope 4 has a rectangular cross section.

In order to simplify the explanation, the X, Y, and Z axes are set as shown in FIG. The X-axis is an axis extending in the width direction of the rope 4 . The Y-axis is an axis extending in the thickness direction of the rope 4 . A Z-axis is an axis extending in the longitudinal direction of the rope 4 . The X-axis is orthogonal to each of the Y-axis and Z-axis. The Y-axis is orthogonal to the Z-axis. By suspending the car 1 by the rope 4 , tension acts on the rope 4 in the direction along the Z-axis. Further, when the rope 4 is wound around the drive sheave 8, the rotation axis of the drive sheave 8 becomes parallel to the X-axis. That is, the rope 4 is bent around the X axis when passing through the drive sheave 8 .

As shown in FIG. 3, the rope 4 includes a support member 18 and a covering material 19. The support member 18 supports loads acting on the rope 4 . The support member 18 mainly supports the load acting on the rope 4 in the direction along the Z-axis. In the example shown in FIG. 3, the cross section of the support member 18 is flat. The width dimension of the support member 18 is larger than the thickness dimension. However, the cross-sectional shape of the support member 18 is not limited to the shape shown in FIG.

FIG. 4 is an enlarged view of the B section shown in FIG. Support member 18 comprises a large number of high-strength fibers 20 and resin matrix 21 . The high-strength fibers 20 are reinforced fibers such as carbon fibers or glass fibers, and are provided to realize weight reduction and high strength. The high-strength fibers 20 are arranged along the Z-axis. High-strength fibers 20 are bound by a resin matrix 21 .

The covering material 19 has a function of protecting the support member 18 from external environmental loads and physical loads. External environmental loads include loads caused by heat and humidity. Physical loads include loads due to contact with drive sheave 8 and deflector sheave 11 . The covering 19 also has the function of providing the rope 4 with the necessary stable traction ability. The covering material 19 is provided on the support member 18 so as to cover the entire circumference of the support member 18 .

FIG. 5 is a front view showing an example of the holding system 16 according to Embodiment 1. FIG. FIG. 6 is a side view showing an example of the holding system 16 according to Embodiment 1. FIG. FIG. 7 is a cross-sectional view along line CC shown in FIG. Retention system 17 is similar to retention system 16 . In the following, the holding system 16 will be described in detail, and the explanation of the holding system 17 will be omitted as appropriate.

An example in which the rope 4 is suspended from the fixed body of the machine room 13 via the holding system 16 will be described below. That is, the Z axis is arranged vertically. The rope 4 extends downwardly from the retaining system 16 and is looped around the return wheel (not shown) of the car 1 below the retaining system 16 . Examples in which the rope 4 extends upwardly from the retention system 16 will not be described as appropriate.

The retention system 16 comprises a connector 25 , a retainer 30 , a fixture 50 and a detector 60 .

The holder 30 holds the end 4a of the rope 4. Retainer 30 is connected to member 22 by connector 25 . The member 22 is fixed to a fixed body in the machine room 13 .

The retainer 30 includes a housing 31, wedges 32, and wedges 33. The housing 31 includes a support plate 34 , a support plate 35 , a receiving member 36 and a receiving member 37 . The support plate 34 and the support plate 35 are arranged so as to face each other. The receiving member 36 is plate-shaped. The receiving member 36 is provided between the support plate 34 and the support plate 35 . The receiving member 37 is plate-shaped. The receiving member 37 is provided between the support plate 34 and the support plate 35 . The receiving member 36 and the receiving member 37 are arranged so as to face each other. The distance between the receiving member 36 and the receiving member 37 narrows downward.

A through hole 34a is formed in the upper part of the support plate 34. A through hole 35 a is formed in the upper portion of the support plate 35 . A through hole 22 a is formed in the member 22 . In the example shown in FIGS. 5-7, the connector 25 comprises a bolt 26 and a nut 27. FIG. The bolt 26 passes through the through hole 34a, the through hole 22a, and the through hole 35a. The holder 30 is connected to the member 22 by tightening the nut 27 on the tip of the bolt 26 . For example, bolt 26 is a reamer bolt. The bolts 26 may be shoulder bolts. Alternatively, the connector 25 may comprise an unthreaded pin.

A space 31a that opens vertically is formed in the center of the housing 31 . The space 31 a is surrounded on all sides by the support plate 34 , the support plate 35 , the receiving member 36 and the receiving member 37 . The rope 4 is arranged so as to pass through the space 31a. The rope 4 is arranged orthogonal to the support plate 34 and the support plate 35 in the space 31a. That is, one surface 4c of the rope 4 is arranged to face the surface 36a of the receiving member 36 in the space 31a. The surface 36a is the surface forming the space 31a. The other surface 4d of the rope 4 is arranged to face the surface 37a of the receiving member 37 in the space 31a. The surface 37a is the surface forming the space 31a.

The wedge 32 is inserted between the rope 4 and the receiving member 36 while the rope 4 is arranged in the space 31a. When wedge 32 is positioned between rope 4 and receiving member 36 , wedge 32 is supported by receiving member 36 with surface 32 a contacting rope 4 . The wedge 33 is inserted between the rope 4 and the receiving member 37 while the rope 4 is arranged in the space 31a. When the wedge 33 is positioned between the rope 4 and the receiving member 37 , the wedge 33 is supported by the receiving member 37 with the surface 33 a contacting the rope 4 .

The wedge 32 receives a downward force from the rope 4 that suspends the car 1. The surface 36a of the receiving member 36 is inclined so as to approach the rope 4 as it goes downward. Therefore, the wedge 32 receives a downward force from the rope 4 and receives a force in a direction approaching the rope 4 from the surface 36a. That is, the wedge 32 is pressed against the rope 4 by the receiving member 36 .

Similarly, the wedge 33 receives a downward force from the rope 4 that suspends the car 1. A surface 37a of the receiving member 37 is inclined so as to approach the rope 4 as it goes downward. Therefore, the wedge 33 receives a downward force from the rope 4 and receives a force in a direction approaching the rope 4 from the surface 37a. That is, the wedge 33 is pressed against the rope 4 by the receiving member 37 . Thus, the rope 4 is subjected to compressive force in the thickness direction by the wedges 32 and 33 . The rope 4 is firmly held by the holder 30 by being sandwiched between the wedges 32 and 33 .

The coefficient of friction between the wedge 32 and the rope 4 along the surface 4c is greater than the coefficient of friction between the wedge 32 and the receiving member 36 along the surface 36a. The coefficient of friction between the wedge 33 and the rope 4 along the surface 4d is greater than the coefficient of friction between the wedge 33 and the receiving member 37 along the surface 37a.

As described above, the rope 4 includes high-strength fibers 20. The rope 4 is preferably not forced to bend inside the retainer 30 to prevent the fibers from buckling. In the example shown in FIG. 7 , the tip 4 e of the rope 4 protrudes upward from between the wedges 32 and 33 . A portion of the rope 4 protruding upward from between the wedges 32 and 33 (a portion on the side of the tip 4e) is neither wound around another member nor forcibly changed in direction.

The fixture 50 is fixed to the rope 4 so as to be adjacent to the holder 30. The fixture 50 is provided on a portion of the rope 4 that extends from the holder 30 toward the car 1 . The portion extending to the car 1 side is a portion to which tension is applied by suspending the car 1 . In the example shown in FIGS. 5 to 7 , the portion is that portion of the rope 4 that extends downward from the holder 30 . The fixture 50 is arranged directly below the holder 30 .

The fixture 50 includes blocks 51 , 52 and bolts 53 . The blocks 51 and 52 are arranged to face each other with the rope 4 interposed therebetween and are connected by bolts 53 . The fixture 50 is firmly fixed to the rope 4 by sandwiching the rope 4 between the blocks 51 and 52 .

5 to 7 show a preferred example where bolts 53 are used to secure blocks 51 and 52 to rope 4. FIG. By using the bolts 53, the work of readjusting the fixed positions of the blocks 51 and 52 can be easily performed. Means other than bolts 53 may be used to secure blocks 51 and 52 to rope 4 .

Regarding the fixture 50, the surface of the block 51 may be knurled to increase the frictional force between the block 51 and the rope 4. The frictional force between the block 52 and the rope 4 may be increased by knurling the surface of the block 52 .

As another example, a groove for arranging the rope 4 may be formed in the block 51 or block 52 . The groove is formed along the Z-axis. If a groove is formed in the block 51 , the block 51 can be easily positioned by arranging the groove so as to match the rope 4 . The groove may be formed in both block 51 and block 52 . If the width of the groove is set so that the rope 4 contacts the side surface of the groove when the rope 4 is sandwiched between the blocks 51 and 52, damage to the rope 4 by the fixture 50 can be suppressed.

The detector 60 detects that the fixture 50 has been displaced relative to the holder 30 in the direction along the axis of the rope 4, that is, in the direction along the Z-axis. The detector 60 comprises a sensor section 61, a sensor section 62, and a measuring device 63 (not shown in FIGS. 5 and 6). Detector 60 may be supported only by holder 30 and fixture 50 . The measuring device 63 may be supported by a fixed body or the like in the machine room 13 .

The sensor section 61 is provided on the holder 30 . The sensor section 61 has a support arm 64 , a shaft 65 and a core 66 . A support arm 64 is provided on the housing 31 . As an example, the support arm 64 is provided between the support plate 34 and the support plate 35 . The support arm 64 may be provided on the receiving member 36 or the receiving member 37 . A shaft 65 is provided on the support arm 64 . A shaft 65 extends downwardly from the support arm 64 . A core 66 is provided on the shaft 65 . Core 66 extends downwardly from shaft 65 .

The support arm 64 is fixed to the housing 31 using bolts, for example. By using the bolt, the position adjustment and replacement of the sensor section 61 can be easily performed. Means other than bolts may be used to secure the support arm 64 to the housing 31 .

The sensor section 62 is provided on the fixture 50 . As an example, the sensor section 62 is provided on the block 51 using bolts. By using the bolt, the position adjustment and replacement of the sensor section 62 can be easily performed. Means other than bolts may be used to secure the sensor portion 62 to the fixture 50 .

The measuring device 63 detects that the position of the sensor section 62 with respect to the sensor section 61 has changed in the direction along the Z axis. 5 to 7 show an example in which the detector 60 is a differential transformer type displacement sensor. That is, the detector 60 detects the relative displacement of the core 66 and the sensor section 62 along the Z-axis as a change in the magnetic field. A voltage corresponding to the displacement is output from the sensor section 62 . The measuring device 63 measures the relative displacement of the sensor units 61 and 62 along the Z-axis based on the voltage output from the sensor unit 62 . The measuring device 63 has at least a function of outputting an abnormal signal when the measured displacement exceeds a threshold.

The relative displacement along the Z-axis between the sensor portions 61 and 62, that is, the relative displacement along the Z-axis between the holder 30 and the rope 4 can be caused by the following factors.
・Sliding of the rope 4 on the surface 32a or the surface 33a ・Advancement of creep deformation of the covering material 19 ・Movement of the wedge 32 or 33 in the direction along the Z-axis caused by the plastic deformation of the holder 30 ・Breakage or tension fluctuation of the rope 4

The slippage of the rope 4 on the surface 32a or the surface 33a is an abnormality that directly leads to the rope 4 coming off the holder 30. When the rope 4 slips in the +Z direction, it is detected by the measuring device 63 as an increase in relative displacement. - Any slippage of the rope 4 in the Z direction is detected by the measuring device 63 as a decrease in relative displacement. The slippage of the rope 4 in the -Z direction may occur due to an emergency stop of the car 1 or the like.

The creep deformation of the covering material 19 is a phenomenon in which the strain of the covering material 19 increases over time. Creep deformation of the covering material 19 can occur even when a constant load acts on the rope 4 . If the creep deformation progresses, the covering material 19 may break. A break in the covering 19 can cause the rope 4 to slip out of the retainer 30 . In the example shown in this embodiment, the covering material 19 can undergo creep deformation in the thickness direction due to the compressive force of the wedges 32 and 33 and creep deformation in the longitudinal direction due to tension.

When the covering material 19 undergoes creep deformation in the thickness direction, the portion of the rope 4 sandwiched between the wedges 32 and 33 becomes thin. Therefore, the wedges 32 and 33 move in the +Z direction. When creep deformation occurs in the covering material 19 in the thickness direction, it is detected by the measuring device 63 as an increase in relative displacement.

When creep deformation occurs in the covering material 19 in the longitudinal direction, the rope 4 moves in the +Z direction with respect to the holder 30 . Therefore, when creep deformation occurs in the covering material 19 in the longitudinal direction, it is detected by the measuring device 63 as an increase in relative displacement.

It should be noted that the displacement measured by the measuring device 63 changes when tension fluctuations occur. The changes due to tension fluctuations are short-lived, while the changes in measured displacement due to creep deformation occur over a long period of time. Therefore, by measuring the relative displacement with the measuring device 63 when, for example, the car 1 is empty of passengers, it is possible to distinguish between changes due to tension fluctuations and changes due to creep deformation.

Plastic deformation of the holder 30 occurs when excessive stress acts on the holder 30 . Plastic deformation of the retainer 30 can occur due to improper attachment of the retainer 30 . When the holder 30 undergoes plastic deformation, the rope 4 is held in a different state. Therefore, plastic deformation of the retainer 30 may cause the rope 4 to be damaged or the rope 4 to come off the retainer 30 .

When the housing 31 is plastically deformed, the shape of the space 31a changes. Therefore, when the housing 31 is plastically deformed, the position of the wedge 32 or the wedge 33 in the space 31a changes. Further, when one of the wedges 32 and 33 is plastically deformed, the position of the one in the space 31a changes. Therefore, when the holder 30 undergoes plastic deformation, it is detected by the measuring device 63 as a change in relative displacement.

When the rope 4 breaks between the holder 30 and the fixture 50, it is detected by the measuring device 63 as an increase in relative displacement. On the other hand, when the rope 4 is broken on the car 1 side of the fixture 50, the portion of the rope 4 held by the holder 30 shrinks due to the lack of tension. Therefore, when the breakage occurs, it is detected by the measuring device 63 as a decrease in relative displacement. Damage before the rope 4 breaks can also be detected in the same way.

When tension fluctuation occurs in the rope 4, the elongation amount of the rope 4 changes. Therefore, when tension fluctuation occurs in the rope 4, it is detected by the measuring device 63 as a change in relative displacement.

Thus, with the example shown in the present embodiment, an abnormality related to the holding of the rope 4 can be detected with high accuracy.

Even when the fixture 50 is fixed to the portion of the rope 4 on the tip 4e side, it is possible to detect the removal of the rope 4 from the holder 30. However, no tension acts on the portion of the rope 4 on the tip 4e side. Therefore, even if the fixture 50 is fixed to the portion of the rope 4 on the tip 4e side, breakage of the rope 4 or the like cannot be detected.

As described above, when the rope 4 breaks, no tension acts on the portion of the rope 4 held by the holder 30 . Therefore, it is conceivable that the wedges 32 and 33 move in the -Z direction with respect to the housing 31 when the rope 4 breaks. However, in experiments conducted by the applicant, no slippage occurred between wedges 32 and 33 and housing 31 when the tension was removed. A similar experiment with grease applied to surfaces 36a and 37a did not change the results. From this experiment, it was found that providing the fixture 50 on the portion of the rope 4 extending from the holder 30 toward the car 1 is also effective for detecting breakage of the rope 4 .

In the example shown in the present embodiment, since the fixture 50 is provided in the portion of the rope 4 that extends from the holder 30 to the car 1 side, the holder 30 can be made smaller and lighter. Moreover, since it is not necessary to attach the fixture 50 to the inside of the holder 30, attachment and position adjustment of the fixture 50 can be easily performed. Furthermore, in the example shown in this embodiment, the distance between the holder 30 and the fixture 50 can be arbitrarily adjusted. In order to further improve the detection accuracy of the detector 60, the fixture 50 may be arranged at a position separated from the holder 30 by a certain distance or more.

In the present embodiment, an example in which the detector 60 is a differential transformer type displacement sensor has been described. Alternatively, detector 60 may be a dial gauge, variable resistance, optical, eddy current, ultrasonic, or capacitive displacement sensor. A non-contact type displacement sensor such as an optical type can prevent the displacement sensor from being damaged during an earthquake or an emergency stop.

In this embodiment, an example in which the measuring device 63 has a function of outputting an abnormal signal has been described. The measuring device 63 may have a function of linking measured displacement and time information and memorizing them one by one. By providing the measuring device 63 with this function, it is possible to later grasp the state when the abnormal signal was output.

Any method may be used to set the threshold for the measurement device 63 to output an abnormal signal. As an example, the threshold is expressed as an absolute value. To facilitate the application of the system to various types of elevator equipment, the threshold may be expressed as an amount of change from normal. The threshold may be set according to the tension acting on the rope 4 . Machine learning or deep learning may be performed using displacement data measured by the measuring device 63 as an input. The learning may further employ other measured data such as torque data of the motor 9 as input. The learning may be used to detect an abnormality related to the holding of the rope 4, or to predict the life of the rope 4 until an abnormality such as breakage of the rope 4 occurs.

The measuring device 63 preferably comprises a processing circuit 100 including a processor 101 and a memory 102 as hardware resources. The measurement device 63 implements each function described above by causing the processor 101 to execute a program stored in the memory 102 . A semiconductor memory or the like can be used as the memory 102 .

The measurement device 63 may comprise processing circuitry 100 including a processor 101, memory 102, and dedicated hardware 103, as shown in FIG. FIG. 7 shows an example in which part of the functions of the measuring device 63 are realized by dedicated hardware 103. FIG. All of the functions of the measuring device 63 may be implemented by dedicated hardware 103 . Specialized hardware 103 can be a single circuit, multiple circuits, programmed processors, parallel programmed processors, ASICs, FPGAs, or combinations thereof.

Embodiment 2.
In Embodiment 1, the example in which the detector 60 is supported by the housing 31 and the fixture 50 has been described. Holding system 16 in this embodiment differs from the example disclosed in Embodiment 1 in that detector 60 is supported by wedge 32 or wedge 33 and fixture 50 . The difference will be described in detail below. Points not specifically described in this embodiment are the same as the example disclosed in the first embodiment.

FIG. 8 is a cross-sectional view showing an example of the holding system 16 according to the second embodiment. FIG. 8 corresponds to a cross-sectional view along line CC shown in FIG. In the example shown in FIG. 8 , the detector 60 comprises a sensor section 61 , a sensor section 62 and a measuring device 63 . The sensor section 61 has a support arm 64 , a shaft 65 and a core 66 . A support arm 64 is provided on the wedge 32 . A shaft 65 is provided on the support arm 64 . A shaft 65 extends downwardly from the support arm 64 . A core 66 is provided on the shaft 65 . Core 66 extends downwardly from shaft 65 .

8 shows an example in which the support arm 64 is provided at the lower end of the wedge 32. FIG. As another example, by forming a through hole in the support plate 34 , the support arm 64 may be passed through the through hole and the support arm 64 may be fixed to the wedge 32 . A support arm 64 may be provided on the wedge 33 .

In the example shown in this embodiment, even if the wedges 32 and 33 move with respect to the housing 31, the position of the sensor section 62 with respect to the sensor section 61 does not change. Therefore, the measuring device 63 does not detect any abnormality. In the example shown in this embodiment, it is possible to accurately detect only anomalies that are likely to cause the rope 4 to come off from the holder 30 .

Embodiment 3.
Embodiment 1 described an example in which the holding system 16 includes one detector 60 . Holding system 16 in the present embodiment differs from the example disclosed in Embodiment 1 in that a plurality of detectors 60 are provided. The difference will be described in detail below. Points that are not specifically described in this embodiment are the same as any of the examples disclosed in the first and second embodiments.

FIG. 9 is a cross-sectional view showing an example of the holding system 16 according to the third embodiment. FIG. 9 corresponds to a cross-sectional view taken along line CC shown in FIG. In the example shown in FIG. 9, the retention system 16 comprises two detectors 60 in addition to the coupler 25 , retainer 30 and fixture 50 . In the following description, reference number 60 is followed by "-1" for one detector and reference number 60 is followed by "-2" for the other detector. That is, holding system 16 includes detector 60-1 and detector 60-2.

The detector 60-1 is similar to the detector 60 disclosed in the second embodiment. The detector 60-1 includes a sensor section 61-1, a sensor section 62-1, and a measuring device 63-1. The sensor section 61-1 has a support arm 64-1, a shaft 65-1, and a core 66-1. A support arm 64-1 is provided on the wedge 32. As shown in FIG. The support arm 64-1 may be provided on the wedge 33.

The sensor section 62-1 is provided on the block 51 of the fixture 50. The measuring device 63-1 detects that the position of the sensor section 62-1 with respect to the sensor section 61-1 has changed in the direction along the Z axis.

The detector 60-2 is similar to the detector 60 disclosed in the first embodiment. The detector 60-2 includes a sensor section 61-2, a sensor section 62-2, and a measuring device 63-2. The sensor section 61-2 has a shaft 65-2 and a core 66-2. Note that the sensor section 61-2 does not have the support arm 64 in the example shown in FIG. In the example shown in FIG. 9, the shaft 65-2 is provided directly on the housing 31. As shown in FIG. As an example, the shaft 65-2 is provided at the lower end of the receiving member 37. As shown in FIG.

The sensor section 62-2 is provided on the block 52 of the fixture 50. The measuring device 63-2 detects that the position of the sensor section 62-2 with respect to the sensor section 61-2 has changed in the direction along the Z axis.

In the example shown in this embodiment, the relative displacement λ1 between the wedge 32 and the fixture 50 is measured by the measuring device 63-1. A relative displacement λ2 between the housing 31 and the fixture 50 is measured by the measuring device 63-2. A relative displacement λ3 between the wedge 32 and the housing 31 can be calculated from the difference between the relative displacements λ1 and λ2.

In the example shown in the present embodiment, it is possible to detect an abnormality that is likely to cause the rope 4 to come off from the holder 30 based on the relative displacement λ1. Further, based on the relative displacement λ3, a change in the holding state that is a sign of abnormality can be detected by distinguishing it from the abnormality. Therefore, it is possible to accurately detect and predict anomalies.

In addition, in the example shown in the present embodiment, an example in which the relative displacement λ3 is obtained by calculation has been described. The relative displacement λ3 may be directly measured by detector 60-1 or detector 60-2.

Embodiment 4.
Holding system 16 in the present embodiment differs from the example disclosed in the first embodiment in the detection method of detector 60 . The difference will be described in detail below. Points that are not specifically described in this embodiment are the same as any of the examples disclosed in the first to third embodiments.

FIG. 10 is a cross-sectional view showing an example of the holding system 16 according to the fourth embodiment. FIG. 10 corresponds to a cross-sectional view along line CC shown in FIG. In the example shown in FIG. 10 , the detector 60 comprises a support 67 , a support 68 , a linear sensor 69 and a measuring device 63 .

The support part 67 is provided on the holder 30 . In the example shown in FIG. 10 , the support portion 67 is provided between the support plate 34 and the support plate 35 of the housing 31 . The support portion 67 may be provided on the receiving member 36 or the receiving member 37 . The support portion 67 may be provided on the wedge 32 or the wedge 33 .

The support part 68 is provided on the fixture 50 . As an example, the support 68 is provided on the block 51 using bolts.

The linear sensor 69 is provided between the support portion 67 and the support portion 68. In the example shown in FIG. 10, the upper end portion of the linear sensor 69 is fixed to the support portion 67 . A lower end portion of the linear sensor 69 is fixed to the support portion 68 . The linear sensor 69 is arranged vertically along the Z-axis.

The measuring device 63 measures the strain of the linear sensor 69 . That is, the detector 60 detects the relative displacement along the Z-axis between the support portion 67 fixed to the holder 30 and the support portion 68 fixed to the fixture 50 as a force (strain) acting on the linear sensor 69. ) is detected as a change in

The linear sensor 69 may be any member as long as the measuring device 63 can measure changes in the acting force. As an example, a wire is used as the linear sensor 69 . In such a case, the measuring device 63 measures the change in strain of the conductor caused by the change in force acting as a change in electrical resistance. As another example, a steel wire to which a strain gauge is attached may be used as the linear sensor 69 . An optical fiber may be used as the linear sensor 69 . A spring member may be used as the linear sensor 69 and the magnitude of the spring reaction force may be measured by the measuring device 63 .

As a simple example, the measuring device 63 may detect only breakage of the linear sensor 69 . In such a case, a conductor is used as the linear sensor 69 . The measuring device 63 measures the conduction state of the linear sensor 69 . In this example, the material and thickness of the linear sensor 69 are selected so that the linear sensor 69 breaks when the relative displacement between the holder 30 and the fixture 50 reaches a threshold value. With this example, it is possible to reduce the size and cost of the holding system 16 .

FIG. 11 is a cross-sectional view showing another example of the holding system 16 according to the fourth embodiment. FIG. 11 corresponds to a cross-sectional view along line CC shown in FIG. In the example shown in FIG. 11 , the linear sensor 69 includes conductors 70 , conductors 71 , sockets 72 and 73 . Conducting wire 70 is fixed to support portion 67 . Conductive wire 70 extends downward from support portion 67 . A socket 72 is provided at the lower end of the conductor 70 .

The conducting wire 71 is fixed to the support portion 68 . Conductive wire 71 extends upward from support portion 68 . A socket 73 is provided at the upper end of the conductor 71 . By connecting the socket 73 to the socket 72, the conducting wire 70 and the conducting wire 71 are arranged in a straight line along the Z-axis.

In the example shown in FIG. 11, if the socket 73 is connected to the socket 72, the measuring device 63 detects that the linear sensor 69 is in a conducting state. When the socket 73 is removed from the socket 72, the measuring device 63 detects that the linear sensor 69 is non-conducting. In the example shown in FIG. 11, the above threshold can be easily set.

The detector 60 in this embodiment may be employed as the detector 60-1 or the detector 60-2 disclosed in the third embodiment. Detector 60 in the present embodiment may be employed as both detector 60-1 and detector 60-2.

Embodiment 5.
The holding system 16 in this embodiment differs from the example disclosed in the first embodiment in the detector 60 . The difference will be described in detail below. Points that are not specifically described in this embodiment are the same as any of the examples disclosed in the first to fourth embodiments.

FIG. 12 is a cross-sectional view showing an example of the holding system 16 according to Embodiment 5. FIG. FIG. 12 corresponds to a cross-sectional view along line CC shown in FIG. In the example shown in FIG. 12 , the detector 60 includes a sensor section 61 , a sensor section 62 and a measuring device 63 .

The sensor section 61 is provided on the holder 30 . The sensor section 61 includes a support arm 64 , a shaft 65 and a receiving member 74 . A support arm 64 is provided on the housing 31 . In the example shown in FIG. 12 , the support arm 64 is provided between the support plate 34 and the support plate 35 . The support arm 64 may be provided on the receiving member 36 or the receiving member 37 . Support arm 64 may be provided on wedge 32 or wedge 33 .

The shaft 65 is provided on the support arm 64. A shaft 65 extends downwardly from the support arm 64 . The shaft 65 passes through a through hole 62 a formed in the sensor portion 62 and has its lower end portion disposed inside the sensor portion 62 . The receiving member 74 is provided at the lower end of the shaft 65 . The width of the receiving member 74 is greater than the width of the through hole 62a. That is, the receiving member 74 cannot pass through the through hole 62a.

The measuring device 63 detects that the position of the sensor section 62 with respect to the sensor section 61 has changed in the direction along the Z axis. If the detector 60 is a differential transformer type displacement sensor, the receiving member 74 is a core.

In the example shown in FIG. 12, when the fixture 50 is separated from the holder 30 by a certain distance, the receiving member 74 of the sensor section 61 comes into contact with the sensor section 62 from below. The detector 60 thereby takes part of the force acting on the rope 4 . Detector 60 may bear all of the forces acting on rope 4 .

In the example shown in the present embodiment, the sensor section 62 is supported by the sensor section 61 when the fixture 50 is separated from the holder 30 by a certain distance. The force acting on the rope 4 can be reduced by the detector 60, and the rope 4 can be prevented from coming off the holder 30. - 特許庁In addition, even if the rope 4 should slip out of the holder 30, the rope 4 can be prevented from falling.

In the example shown in this embodiment, the sensor section 61 and the sensor section 62 are required to have the function of bearing the force acting on the rope 4 . Therefore, it is preferable to use a material having high strength as the material of the sensor section 61 and the sensor section 62 . As an example, iron-based materials such as carbon steel, high-tensile steel, rolled steel, stainless steel, and structural alloy steel, and plated steel using these as base materials may be used as materials for the sensor section 61 and the sensor section 62. . As another example, a material such as aluminum, magnesium, titanium, brass, copper, or an alloy material may be used as the material of the sensor section 61 and the sensor section 62 .

In the present embodiment, an example in which the measuring device 63 detects changes in relative displacement between the sensor section 61 and the sensor section 62 has been described. As another example, the measuring device 63 may measure the state of continuity between the sensor section 61 and the sensor section 62 .

In this embodiment, an example in which the detector 60 bears the force acting on the rope 4 has been described. As another example, additional mechanisms may be added to the retention system 16 to take up some of the force acting on the rope 4 when the fixture 50 is a certain distance from the retainer 30 .

Embodiment 6.
The holding system 16 in this embodiment differs from the example disclosed in the first embodiment in the detector 60 . The difference will be described in detail below. Points not specifically described in this embodiment are the same as any of the examples disclosed in the first to fifth embodiments.

FIG. 13 is a cross-sectional view showing an example of the holding system 16 according to the sixth embodiment. FIG. 13 corresponds to a cross-sectional view along line CC shown in FIG. In the example shown in FIG. 13 , retention system 16 comprises connector 25 , retainer 30 and detector 60 . Retention system 16 does not include fasteners 50 .

In the example shown in FIG. 13, the detector 60 detects that the portion of the rope 4 extending from the holder 30 toward the car 1 is relative to the holder 30 in the direction along the axis of the rope 4, that is, in the direction along the Z-axis. Detects that it has been displaced to The detector 60 has a sensor section 75 and a measuring device 63 . Detector 60 may be supported only by holder 30 . The measuring device 63 may be supported by a fixed body or the like in the machine room 13 .

The sensor section 75 is provided on the holder 30 . The sensor section 75 includes a support block 76 , support arms 77 and rollers 78 . A support block 76 is provided on the housing 31 . In the example shown in FIG. 13 , the support block 76 is provided between the support plate 34 and the support plate 35 . The support block 76 may be provided on the receiving member 36 or the receiving member 37 . Support block 76 may be provided on wedge 32 or wedge 33 .

The support arm 77 is provided on the support block 76 . A support arm 77 extends downwardly from the support block 76 . A roller 78 is rotatably provided on the support arm 77 . The roller 78 contacts the surface 4c of the rope 4 directly below the retainer 30. As shown in FIG. As the rope 4 moves relative to the retainer 30 along the Z axis, the rollers 78 rotate. A measuring device 63 measures the amount of rotation of the roller 78 . That is, the measuring device 63 measures the relative displacement between the portion of the rope 4 extending from the holder 30 toward the car 1 side and the holder 30 based on the amount of rotation of the roller 78 .

The holding system 16 shown in this embodiment does not include the fixture 50 . Therefore, the number of parts of the holding system 16 can be reduced. Also, the attachment of the rope 4 to the holding system 16 can be easily performed.

FIG. 13 shows an example in which the detector 60 is a rotation sensor. That is, the sensor section 75 has rollers 78 . As another example, the sensor unit 75 may include a camera. In this case, the measuring device 63 can measure the relative displacement between the rope 4 and the holder 30 by tracking the pattern applied to the surface 4c of the rope 4 based on the camera image.

Embodiment 7.
FIG. 14 is a side view showing an example of the holding system 16 according to the seventh embodiment. FIG. 14 is a diagram corresponding to FIG. FIG. 15 is a cross-sectional view taken along line DD shown in FIG. Note that points not specifically described in this embodiment are the same as any of the examples disclosed in the first to sixth embodiments.

The retention system 16 further comprises a pulley 79 and a pulley 80 in addition to the connector 25 , the retainer 30 , the fixture 50 and the detector 60 . The pulley 79 is rotatably mounted on the fixture 50 via the support arm 81 . In the example shown in FIGS. 14 and 15 , the support arm 81 is provided on the block 52 . A support arm 81 extends upwardly from block 52 . A pulley 79 is provided at the upper end of the support arm 81 . The pulley 79 is arranged above the fixture 50 .

The pulley 80 is rotatably provided on the holder 30 via a support block 82 and a support arm 83 . The support block 82 is provided on the support plate 34 of the housing 31 . A support block 82 protrudes from the support plate 34 . The support block 82 may be provided on the receiving member 36 or the receiving member 37 . Support block 82 may be provided on wedge 32 or wedge 33 . The support arm 83 is provided to extend downward from the tip of the support block 82 . A pulley 80 is provided at the lower end of the support arm 83 . The pulley 80 is arranged below the holder 30 .

The detector 60 includes a sensor section 61 , a string member 84 , a sensor section 62 and a measuring device 63 . The sensor section 61, the sensor section 62, and the measuring device 63 are the same as those disclosed in the fifth embodiment. However, in the example shown in FIGS. 14 and 15, the sensor section 61 has only a member corresponding to the receiving member 74, and the sensor section 61 is suspended by a string-like member 84, which is different from the fifth embodiment. It differs from the disclosed example.

A steel wire is suitable for the string-like member 84 . However, the string-like member 84 is not limited to a steel wire. One end of the string-like member 84 is connected to the retainer 30 via a support block 85 . The support block 85 is provided on the support plate 34 of the housing 31 . A support block 85 protrudes from the support plate 34 . The support block 85 may be provided on the receiving member 36 or the receiving member 37 . Support block 85 may be provided on wedge 32 or wedge 33 . The string member 84 extends downward from the support block 85 and is wound around the pulley 79 . The string member 84 folded back by the pulley 79 extends obliquely upward and is wound around the pulley 80 . A string member 84 folded back by the pulley 80 extends downward, and the other end is connected to the sensor section 61 .

The sensor section 62 is provided on the block 51 of the fixture 50 . The sensor section 62 is arranged directly below the pulley 80 . A portion of the string member 84 extending upward from the sensor portion 61 passes through the through hole 62a and is arranged along the Z axis.

The measuring device 63 detects that the position of the sensor section 62 with respect to the sensor section 61 has changed in the direction along the Z axis. If the detector 60 is a differential transformer type displacement sensor, the sensor section 61 is the core. As another example, the measuring device 63 may measure the state of continuity between the sensor section 61 and the sensor section 62 .

In the example shown in FIGS. 14 and 15, a string-like member 84 that suspends the sensor section 61 is folded back by the pulley 79 and the pulley 80 . Therefore, the displacement of the fixture 50 with respect to the holder 30 can be amplified by the string member 84, and the detection accuracy of the detector 60 is improved.

In the example shown in FIGS. 14 and 15, one end of the string-like member 84 is provided on the holder 30 . As another example, one end of the string member 84 may be provided on the fixture 50 . One end of the string member 84 may be provided on the sensor section 62 fixed to the fixture 50 .

Another example using the string-like member 84 will be described below.

FIG. 16 is a front view showing another example of the holding system 16 according to Embodiment 7. FIG. FIG. 16 shows an example of holding multiple ropes 4 . The retention system 16 shown in FIG. 16 comprises a connector 25, a retainer 30, a fixture 50, a detector 60, a pulley 79 and a pulley 80. FIG. The number of connectors 25 , holders 30 , fixtures 50 , pulleys 79 , and pulleys 80 is the same as the number of ropes 4 . That is, one connecting tool 25 , one holding tool 30 , one fixing tool 50 , one pulley 79 and one pulley 80 are provided for one rope 4 . Only one detector 60 is provided.

FIG. 16 shows an example in which the holding system 16 holds two ropes 4 as the simplest example. In the following description of FIG. 16, the elements associated with the rope 4 on the right are numbered with a suffix "R". Elements associated with the left rope 4 are labeled with an "L". For example, the holder 30L holds the rope 4L. The fixture 50L is fixed to the rope 4L directly below the holder 30L.

The detector 60 includes a sensor section 61 , a string member 84 , a sensor section 62 and a measuring device 63 . One end of the string member 84 is connected to the holder 30L via a support block 85L. The string member 84 extends downward from the support block 85L and is wound around the pulley 79L.

The string member 84 extends from the pulley 79L along the Y-axis and is wound around the pulley 79R. The string member 84 extends obliquely upward from the pulley 79R and is wound around the pulley 80R. The string-like member 84 folded back by the pulley 80R extends downward, and the other end is connected to the sensor section 61. As shown in FIG.

The sensor section 62 is provided on the block 51R of the fixture 50R. The sensor unit 62 is arranged directly below the pulley 80R. A portion of the string member 84 extending upward from the sensor portion 61 passes through the through hole 62a and is arranged along the Z axis.

The measuring device 63 detects that the position of the sensor section 62 with respect to the sensor section 61 has changed in the direction along the Z axis, that is, up and down. In the example shown in FIG. 16, a portion of the string member 84 extending from the support block 85L to the pulley 79L extends vertically. Therefore, when the fixture 50L moves downward with respect to the holder 30L, the sensor section 61 moves upward with respect to the sensor section 62 . When the fixture 50L moves upward relative to the holder 30L, the sensor section 61 moves downward relative to the sensor section 62 . In addition, it is preferable that the above-mentioned portion of the string-like member 84 is arranged vertically.

Similarly, in the example shown in FIG. 16, the portion of the string member 84 extending from the pulley 80R to the sensor section 61 extends vertically. Therefore, when the fixture 50R moves downward relative to the holder 30R, the sensor section 61 moves upward relative to the sensor section 62. FIG. When the fixture 50R moves upward relative to the holder 30R, the sensor section 61 moves downward relative to the sensor section 62. As shown in FIG.

That is, even if the fixture 50L is relatively displaced with respect to the holder 30L in the direction along the Z axis, the detector 60 detects that the fixture 50R is relatively displaced with respect to the holder 30R in the direction along the Z axis. Even if it is displaced, it is possible to detect an abnormality. In the example shown in FIG. 16 , a single detector 60 can detect an abnormality related to holding of a plurality of ropes 4 . In the example shown in FIG. 16 as well, the measuring device 63 may measure the state of continuity between the sensor section 61 and the sensor section 62 .

In the example shown in FIG. 16, one end of the string-like member 84 is provided on the holder 30L. As another example, one end of the string member 84 may be provided on the fixture 50L. In such a case, the string member 84 extends from the pulley 80R along the Y-axis and is wound around the pulley 80L. The string member 84 folded back by the pulley 80L extends downward, and one end is connected to the fixture 50L.

It should be noted that, as mentioned above, FIG. 16 shows a simple example in which the holding system 16 holds two ropes 4 . The holding system 16 may hold more than two ropes 4. For example, when suspending the car 1 with three ropes 4 , the holders 30 and fixtures 50 are provided for each of the three ropes 4 . The string-like member 84 is arranged so that the sensor portion relative to the sensor portion 61 is displaced relative to the holder 30 in the direction along the axis of the rope 4 with respect to which rope 4 among the three ropes 4 . It is stretched so that the position of 62 changes in the direction along the Z-axis.

For example, a third set of holders 30 and fixtures 50 is provided between the holders 30L and 30R in FIG. In this case, the string-like member 84 extends from the pulley 79L along the Y-axis as shown in FIG. The same applies if the holding system 16 holds more than four ropes 4 .

FIG. 17 is a front view showing another example of the holding system 16 according to the seventh embodiment. FIG. 17 shows an example in which the rope 4 extends upward from the retainer 30. FIG. That is, in the example shown in FIG. 17 , “the portion extending from the holder 30 toward the car 1 ” of the rope 4 is the portion extending upward from the holder 30 .

The retention system 16 shown in FIG. 17 comprises a connector 25, a retainer 30, a fixture 50, a detector 60, a pulley 79 and a pulley 86.

The fixture 50 is arranged directly above the holder 30 so as to be adjacent to the holder 30 . The pulley 79 is rotatably mounted on the fixture 50 via the support arm 81 . In the example shown in FIG. 17, the support arm 81 is provided on the block 52 . The pulley 86 is rotatably provided on the fixture 50 via the support arm 81 and the support arm 87 . Pulley 79 and pulley 86 are arranged above fixture 50 .

The detector 60 includes a sensor section 61 , a string member 84 , a sensor section 62 and a measuring device 63 . The sensor section 61, sensor section 62, and measuring device 63 are the same as in the example disclosed in FIG.

One end of the string-like member 84 is connected to the holder 30 via a support block 85 . The string member 84 extends upward from the support block 85 and is wound around the pulley 79 . The string member 84 extends from the pulley 79 along the Y-axis and is wound around the pulley 86 . The string-like member 84 folded back by the pulley 86 extends downward, and the other end is connected to the sensor section 61 .

The sensor section 62 is provided on the block 51 of the fixture 50 . The sensor section 62 is arranged directly below the pulley 86 . A portion of the string member 84 extending upward from the sensor portion 61 passes through the through hole 62a and is arranged along the Z axis.

The measuring device 63 detects that the position of the sensor section 62 with respect to the sensor section 61 has changed in the direction along the Z axis, that is, up and down. In the example shown in FIG. 17 , a string member 84 that suspends the sensor section 61 is folded back by pulleys 79 and 86 . Therefore, the displacement of the fixture 50 with respect to the holder 30 can be detected by the string member 84 .

In Embodiments 1 to 7, an example in which the rope 4 is sandwiched between the wedges 32 and 33 as the holding mechanism of the holder 30 has been described. Examples of other holding mechanisms that can be employed by the holding fixture 30 will be described below.

FIG. 18 is a front view showing another example of the holder 30. FIG. 19 is a cross-sectional view taken along line EE shown in FIG. 18. FIG. The retainer 30 shown in FIGS. 18 and 19 includes a flat plate 41 , a flat plate 42 and a plurality of bolts 43 .

A through-hole 41a is formed in the upper portion of the flat plate 41 . A through hole 42 a is formed in the upper portion of the flat plate 42 . The bolt 26 passes through the through hole 22a, the through hole 41a, and the through hole 42a. The holder 30 is connected to the member 22 by tightening the nut 27 on the tip of the bolt 26 .

In the example shown in FIGS. 18 and 19, the rope 4 is arranged between the flat plate 41 and the flat plate 42. The rope 4 is firmly held by the holder 30 by fastening the flat plate 41 and the flat plate 42 with the bolt 43 while the rope 4 is arranged between the flat plate 41 and the flat plate 42 . The flat plate 41 contacts the surface 4c of the rope 4 with the surface 41b. The flat plate 41 is pressed against the rope 4 by bolts 43 . Similarly, flat plate 42 contacts surface 4d of rope 4 with surface 42b. The flat plate 42 is pressed against the rope 4 by bolts 43 .

The holder 30 shown in FIGS. 18 and 19 has a smaller number of parts than the holder 30 shown in FIGS. 5-7. Therefore, it is easy to reduce the size and weight of the holder 30 . 18 and 19, the displacement of the wedges 32 and 33 with respect to the housing 31 does not need to be considered. In the example shown in each embodiment, the holder 30 shown in FIGS. 18 and 19 may be employed.

Both the holders 30 shown in FIGS. 5 to 7 and the holders 30 shown in FIGS. 18 and 19 hold the rope 4 by sandwiching the rope 4 from both sides. Wedges 32 and 33 are examples of means for contacting rope 4 . The receiving member 36 and the receiving member 37 are examples of means for pressing the contact means against the rope 4 . The housing 31 provided with the receiving member 36 and the receiving member 37 may be regarded as the pressing means. Similarly, flat plate 41 and flat plate 42 are examples of means for contacting rope 4 . The bolt 43 is an example of means for pressing the contact means against the rope 4 .

In each embodiment, an example in which the cross section of the rope 4 is rectangular has been described. This is an example. The cross-section of the rope 4 may be circular. A metal material such as a steel wire may be used as the support member 18 for the rope 4 . The rope 4 may be provided with only the support member 18 without the covering material 19 .

In each embodiment, a suitable example in which the rope 4 is used in an elevator has been described. For example, the weight of the rope 4 increases when the lift of the elevator system is high. An increase in the weight of the rope 4 hinders downsizing and cost reduction of devices such as the hoist 7 and the like. A flat-belt type rope 4 containing reinforcing fibers such as carbon fibers is suitable for achieving light weight and high strength of the rope 4 . However, such a rope 4 cannot be bent with extremely small curvatures to avoid buckling of the fibers. Therefore, when such a rope 4 is used, it is not possible to adopt a conventional holding mechanism in which the ends of the rope 4 are looped and a wedge is arranged inside to prevent the rope from coming off.

With the holding system according to the present disclosure, an abnormality related to holding the rope 4 can be detected with high accuracy. Therefore, when a flat belt type rope 4 containing reinforcing fibers is used, this holding system can be a particularly effective means as a system for holding the ends of the rope 4 .

"Rope 4 is not limited to elevator ropes." The rope 4 should just be a rope for hanging an object. For example, the rope 4 may be a crane rope.

The retention system according to the present disclosure can be applied to ropes for hanging objects.

1 cage, 2 counterweight, 3 hoistway, 4 rope, 4a-4b end, 4c-4d surface, 4e tip, 5-6 guide rail, 7 winch, 8 drive sheave, 9 motor, 10 brake, 11 Bending wheel 12 Control device 13 Machine room 14 Car room 15 Car frame 16-17 Holding system 18 Support member 19 Covering material 20 High strength fiber 21 Resin base material 22 Member 22a Through hole , 25 Connector, 26 Bolt, 27 Nut, 30 Holder, 31 Housing, 31a Space, 32-33 Wedge, 32a-33a Surface, 34-35 Support plate, 34a-35a Through hole, 36-37 Receiving member, 36a ~37a surface, 41-42 flat plate, 41a-42a through hole, 41b-42b surface, 43 bolt, 50 fixture, 51-52 block, 53 bolt, 60 detector, 61-62 sensor part, 62a through hole, 63 Measuring device, 64 support arm, 65 shaft, 66 core, 67-68 support part, 69 linear sensor, 70-71 lead wire, 72-73 socket, 74 receiving member, 75 sensor part, 76 support block, 77 support arm, 78 rollers, 79 to 80 pulleys, 81 support arm, 82 support block, 83 support arm, 84 string member, 85 support block, 86 pulley, 87 support arm, 100 processing circuit, 101 processor, 102 memory, 103 dedicated hardware

Claims (15)

a retainer for holding ends of a rope for hanging an object;
a fixture provided on a portion of the rope extending from the holder toward the object;
a detector for detecting displacement of the fixture relative to the retainer in a direction along the axis of the rope;
retention system with The holding system according to claim 1, wherein the detector is supported by the holder and the fixture. The detector is
a first sensor unit provided on the holder;
a second sensor unit provided on the fixture;
a measuring device that detects a change in the position of the second sensor unit relative to the first sensor unit in a direction along the axis;
3. A retention system according to claim 1 or claim 2, comprising: 4. The detector according to claim 3, wherein when the fixture is separated from the holder by a certain distance, the first sensor section and the second sensor section come into contact with each other, and the detector bears part of the force acting on the rope. retention system. The detector is
a first support provided on the holder;
a second support provided on the fixture;
a linear sensor provided on the first support portion and the second support portion and arranged along the axis;
a measuring device for measuring the force acting on the linear sensor;
3. A retention system according to claim 1 or claim 2, comprising: The detector is
a first support provided on the holder;
a second support provided on the fixture;
a conductor provided on the first support portion and the second support portion and arranged along the axis;
a measuring device for measuring the conduction state of the conductor;
3. A retention system according to claim 1 or claim 2, comprising: The holder is
a wedge-shaped contact member contacting the rope;
a pressing member that presses the contact member against the rope;
with
7. A retention system according to any preceding claim, wherein the pressing member is formed with a surface that approaches the rope as it approaches the fixture. The holding system according to claim 7, wherein the detector is supported by the contact member and the fixture. The holding system according to claim 7, wherein the detector is supported by the pressing member and the fixture. A second detector supported by the contact member and the fixture for detecting displacement of the fixture relative to the holder in a direction along the axis of the rope. 10. Retention system according to clause 9. 11. A retention system according to any one of the preceding claims, wherein one of said retainer or said fixture is arranged directly above the other of said retainer or said fixture so as to be adjacent to said other. . a retainer for holding ends of a rope for hanging an object;
a detector for detecting that a portion of the rope that is supported by the holder and extends from the holder toward the object side is displaced relative to the holder in a direction along the axis of the rope; ,
retention system with The rope is
a support member having a flattened cross section and containing reinforcing fibers;
a covering material covering the support member;
13. A retention system according to any one of the preceding claims, comprising: A retention system for suspending an object by a plurality of ropes, comprising:
a first sensor unit and a second sensor unit;
a string-like member to which the first sensor unit is connected;
a measuring device that detects a change in the position of the second sensor unit with respect to the first sensor unit;
with
for each of the plurality of ropes,
a holder that holds the ends of the rope;
a fixture provided on a portion of the rope extending from the holder toward the object;
with
The string-shaped member is configured to provide the first sensor portion with respect to the first sensor section even when the fixture is relatively displaced with respect to the holder with respect to which rope among the plurality of ropes in the direction along the axis of the rope. 2. A holding system stretched so that the position of the sensor part changes. The holding system according to any one of claims 1 to 14, wherein the object is an elevator car that moves up and down a hoistway.

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