JP5755203B2 - Wire rope gripper - Google Patents

Description

  The present invention relates to a wire rope gripping tool that is effective when pulling or lifting a wire rope to a high place.

  Conventionally, when a wire rope used as an elevator main rope or the like is lifted and laid at a height in a tower in a hoistway of a car, the wire rope is lifted by being held by a rope clip or the like. However, since the holding area of the rope clip is extremely small and the wire rope is tightened linearly, pressure is applied concentrated on the narrow area of the holding portion of the rope clip, causing deformation or damage to the wire rope. If a large force is applied to the holding portion in such a state, cutting may be caused.

  In addition, since commercially available gripping tools such as camlers use the traction force of the traction tool and the self-gravity of the wire rope, when the load is momentarily reduced due to the impact force of the rising / lowering of the winch etc., the wire rope May fall off due to unfixing of the wire rope, dropping off from the gripping portion, or the like when the wire rope is untwisted at the gripping portion. If such a dropout occurs, for example, if the wire rope is long and has a length exceeding 100 m, it is very dangerous because the weight of the wire rope reaches 100 kg to several tons.

  Therefore, in order to prevent such danger, there is a “wire rope clamp” (see Patent Document 1) in which wire ropes of various diameters can be gripped using a common outer clamp.

JP 2001-271810 A

  The wire rope clamp described in Patent Document 1 described above is a dedicated tool with a complicated structure when viewed as a wire rope gripping tool, while it can grip the wire rope while preventing damage to the wire rope and hardly falling off. Since the manufacturing requires a complicated and expensive process, the manufacturing cost becomes high, so that there is a problem that it is not very versatile.

  The present invention has been made to solve such problems, and its technical problem is that it can be manufactured inexpensively with a simple structure without requiring complicated and expensive processing, and damage to the wire rope is reduced. An object of the present invention is to provide a highly versatile wire rope gripping tool capable of gripping a wire rope in a state where it is difficult to drop off while suppressing.

  In order to solve the above technical problem, the present invention is a wire rope gripping tool for gripping a wire rope by clamping with a pair of opposing members, and substantially follows the outer peripheral shape of the wire rope on the surfaces facing each other. A pair of pinching plates as a pair of members having a shape groove, and a wire rope sandwiched between the pair of pinching plates and provided on a surface opposite to the surface on which the grooves of the pair of pressing plates are formed A suspension plate to which a connecting device for towing can be attached, a pair of clamping plates and a bolt provided through the suspension plate, a nut screwed to the bolt, and a wire rope are clamped by the pair of clamping plates. And a wire rope protection member disposed between the outer circumferential surface of the wire rope and the surface of the groove in the pair of pressure plates.

  According to the present invention, it can be manufactured inexpensively with a simple structure without requiring complicated and expensive processing, and it is highly versatile to hold the wire rope in a state in which it is difficult to drop off while suppressing damage to the wire rope. A wire rope gripper can be provided.

It is the schematic which showed a mode that the wire rope holding tool which concerns on Example 1 of this invention was applied and a wire rope was lifted and laid to the height in the tower in the hoistway of the elevator car. FIG. 3 is a partially enlarged view showing a state where a wire rope is gripped by the wire rope gripping tool shown in FIG. It is the figure which showed the external appearance structure of the wire rope holding tool shown in FIG. 1 from the front direction. It is the figure which showed the basic composition of the wire rope holding tool shown in FIG. 1 from the upper surface direction. It is the figure from the front direction shown in order to demonstrate the detailed structure and standard dimension of the suspension plate with which the wire rope holding tool shown in FIG. 4 is equipped. It is the figure from the upper surface direction shown in order to demonstrate the standard dimension of the suspension plate demonstrated in FIG. It is the figure from the front direction shown in order to demonstrate the detailed structure and standard dimension of the pinching board with which the wire rope holding tool shown in FIG. 4 is equipped. It is the figure from the upper surface direction shown in order to demonstrate the standard dimension of the pinching board demonstrated in FIG. It is the figure from the front direction shown in order to demonstrate the detailed structure and standard dimension of the rubber plate for protection and clearance gap adjustment with which the wire rope holding tool shown in FIG. 4 is equipped. It is the figure from the upper surface direction shown in order to demonstrate the standard dimension of the rubber plate for protection and clearance gap adjustment demonstrated in FIG.

  Hereinafter, the wire rope gripping tool of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows a state in which a wire rope gripping tool 12 according to Embodiment 1 of the present invention is applied and a wire rope 11 is lifted and laid by a lifting machine 7 to a height in a tower in a hoistway of an elevator car 5. It is the schematic which showed. In the installation work of the main rope 13 of the elevator, as shown in FIG. 1, in order to lay the main rope 13 in the hoistway in order to attach the main rope 13 to the car 5 or the counterweight 6, the wire rope 11 serving as the main rope is wired. It is necessary to hold the rope gripping tool 12 and lift it to a predetermined height by a lifting machine 7 such as a winch.

  As a general work example here, the car 5 is placed at the top floor position in the hoistway, the counterweight 6 is placed at the bottom floor position, and a solid object such as a beam of a building frame or a rail bracket of an elevator. Use and to fix. In order to install a plurality of main ropes 13, the wire rope 11 is gripped by the wire rope gripping tool 12 and lifted to a predetermined height by the lifting machine 7. The lifting work of the wire rope 11 is performed according to the procedure described below. The wire rope 11 is wound around the wire rope drum 10 and installed on the lowest floor. The lifting machine 7 is installed on the upper floor as much as possible below the floor so as not to interfere with the car 5 arranged at the floor position on the top floor. Here, it is installed on the floor one level below the top floor. The wire 9 wound around the lifting machine 7 is stretched from the lifting machine 7, and a pulley 8 for changing the direction is attached to the wall of the hoistway facing the floor where the lifting machine 7 is installed. The wire 9 is turned upward to change the direction, the pulley 8 is similarly attached to the ceiling portion of the machine room 1 above the counterweight 6, and the wire 9 changed in the upward direction is transferred from the hoistway to the machine room 1. The wire 9 is wound around the pulley 8 attached to the ceiling through the through hole and turned downward, and the wire 9 is again dropped downward through the through hole from the hoistway to the machine room 1. A wire rope gripping tool 12 is attached in the vicinity of the end portion of the wire rope 11 drawn out from the wire rope drum 10. For this attachment, a pre-length suitable for performing the work described later from the tip of the wire rope 11. It is necessary to install it at the position where

  FIG. 2 is a partially enlarged view showing the state in which the wire rope 11 is gripped by the wire rope gripping tool 12 as viewed from the front. Referring to FIG. 2, the wire rope 11 has a shackle 15 as a connection tool for pulling and lifting the wire rope 11 to the wire rope gripping tool 12 with the wire rope gripping tool 12 attached to the wire rope 11. A sling wire 14 that is connected to the wire 9 through the shackle 15 is attached and can be hung on the wire 9 via the wire rope gripping tool 12. By lifting the wire 9 by operating the lifting machine 7 in this state, the wire rope 11 is continuously lifted, and when the wire rope gripping tool 12 is lifted to a predetermined height, the lifting machine 7 is operated. The wire rope 11 of the pre-length portion on the distal end side from the portion gripped by the wire rope gripping tool 12 was wound around the curling wheel 4 and the sheave 3 of the hoisting machine 2 installed in the machine room 1. Thereafter, the front end portion is fixed to the car 5 so that the car 5 can be suspended. After such work is completed, the wire rope gripping tool 12 is removed, and the tip portion of the wire rope 11 is fixed to the counterweight 6 so that the counterweight 6 can be suspended at the lower end side. Thereby, laying for one main rope 13 is completed. In order to lay a plurality of main ropes 13, such work is repeated in the same manner.

  By the way, the laying work of the main rope 13 may be a large rope of 200 m or more and a heavy weight of 500 kg or more used in the field as the standard of the main rope 13 especially with the increase in the height of the elevator. It is increasing. In consideration of handling after lifting of such a heavy main rope 13 (the same applies to the wire rope 11), the wire rope gripping tool 12 holds the main rope 13 with a pre-length portion, and pre-length Since the portion of the minute is wrapped around the sheep 3 or the like, the car 5 or the like is fixedly installed so that it can be suspended, and the portion gripped by the wire rope gripping tool 12 is used as the main rope 13 of the elevator that operates. The wire rope gripping tool 12 is required to be capable of holding the heavy-weight rope wire 11 firmly without causing deformation or damage to the wire rope 11 by gripping. It can be said that it is important.

  FIG. 3 is a diagram showing an external configuration of the wire rope gripping tool 12 from the front direction. FIG. 4 is a diagram showing the basic configuration of the wire rope gripping tool 12 from the top surface direction. In FIG. 4, the wire rope 11 is shown in a cross-sectional state. 3 and 4, the wire rope gripping tool 12 has a function of gripping the wire rope 11 by clamping with a pair of opposing members. Specifically, a pair of clamping plates 22 as a pair of members having grooves 21 having a shape substantially along the outer peripheral shape of the wire rope 11 on the surfaces facing each other, and the grooves 21 of each clamping plate 22 are formed. The suspension plate 16 is provided on a surface opposite to the surface, and can be attached with a connector for pulling the wire rope 11 sandwiched between the compression plates 22, and penetrates the compression plates 22 and the suspension plate 16. The bolts 17 screwed into the bolts 17, the outer surface of the wire rope 11 when the wire rope 11 is clamped by the respective clamping plates 22, and the surface of the groove 21 in each clamping plate 22. A rubber plate 19 for protection and clearance adjustment as a wire rope protection member disposed between the spring and a spring washer 23 inserted when the nut 18 is fastened to the bolt 17 is provided. It is made.

  By the way, when the wire rope gripping tool 12 here clamps and grips the outer peripheral surface of the wire rope 11 with the surface of the groove 21 in each pinching plate 22, the wire rope 11 and the groove 21 in each pinching plate 22. The surface of the groove 21 and the outer peripheral surface of the wire rope 11 are also sandwiched when the protective and gap adjusting rubber plate 19 is interposed between the outer surface and the outer surface of the wire rope 11 and the groove 21 has a different curvature. It can be adjusted so that there is no gap between them. Further, in this wire rope gripping tool 12, a protective and gap adjusting rubber plate 19 is interposed between the grooves 21 of the pair of pressure plates 22, and the wire rope 11 is sandwiched between the pair of pressure plates 22. A fastening allowance 20 with an interval of about 6 mm is provided.

  FIG. 5 is a view from the front direction shown for explaining the detailed configuration and standard dimensions of the suspension plate 16 provided in the wire rope gripping tool 12. FIG. 6 is a view from the upper surface direction for explaining the standard dimensions of the suspension plate 16. Referring to FIGS. 5 and 6, the suspension plate 16 is formed of a steel plate material, and bolt holes 16b for passing the bolts 17 on both sides in the width direction have a predetermined interval in the longitudinal direction at three positions on the left and right. And provided in a straight line. The standard dimension of the suspension plate 16 is 3 to 4 times the width d of the wire rope 11 to be clamped, and the length is longer than the entire length of the clamping plate 22 to be described later, and the portion longer than the clamping plate 22 is What is necessary is just the structure used as the suspension part 16a which can attach the connection tool for pulling the wire rope 11 which the shackle 15 mentioned above, the slinging wire 14, etc. attach. Here, the suspension plate 16 can be exemplified by a case where the total length is in the range of 300 to 400 mm and the plate thickness is in the range of 3 to 9 mm. However, the dimensions are related to the weight applied during lifting and the clamping plate 22. It should be appropriately adjusted (set) in consideration of the diameter d of the wire rope 11 to be pressed. In the first embodiment, as described above, the suspension plate 16 is provided on the surface opposite to the surface on which the groove 21 of the pressure plate 22 is formed. However, as shown in FIG. Instead of providing each of 22, a configuration in which only one of them is provided is adopted. By doing in this way, the weight of the wire rope holding tool 12 whole is suppressed, and the usability is improved. In addition, when it is determined that the structure provided on each of the pair of pressing plates 22 is more advantageous in consideration of the weight of the wire rope 11 to be gripped and the durability and usability of the wire rope gripping tool 12, It is also possible to employ a configuration provided in each of the pressing plates 22.

  FIG. 7 is a view from the front direction shown for explaining the detailed configuration and standard dimensions of the pinching plate 22 provided in the wire rope gripping tool 12. FIG. 8 is a view from the upper surface direction shown for explaining the standard dimension of the pinching plate 22. Referring to FIGS. 7 and 8, the pair of pressing plates 22 are formed of an aluminum plate material or a steel plate material, and grooves 21 having a shape substantially along the outer peripheral shape of the wire rope 11 are provided on the surfaces facing each other. On both sides in the width direction, bolt holes 22a are provided at positions corresponding to the bolt holes 16b provided in the suspension plate 16. Here, the bolt holes 22 a are linearly arranged at predetermined intervals in a direction parallel to the longitudinal direction of the groove 21, and set so that the midpoint of the left and right bolt holes 22 a is exactly the center of the groove 21. The clamping pressure between the clamping plates 22 due to the fastening by the bolt 17 and the nut 18 is set so as to be applied evenly to the wire rope 11. The standard dimensions of the pair of pinching plates 22 may be as long as the width of the hanging plate 16 and about 300 mm in length, and the wire 21 based on the diameter d of the wire rope 11 to be pinched. The value obtained by adding about 3 mm to the radius d / 2 of 11 is a recess having a shape substantially along the outer peripheral shape of the wire rope 11 with a radius of curvature r (= 0.5 d + 3 mm) serving as a groove processing radius, and the plate thickness is the curvature Any configuration may be used as long as the radius r is a value obtained by adding about 15 to 20 mm to the radius of curvature r. Incidentally, the thickness of the pair of pressing plates 22 also takes into account the weight applied during lifting, the diameter d of the wire rope 11 clamped by the pressing plate 22 and the like, as in the case of the suspension plate 16. It should be adjusted (set) as appropriate.

  The cross-sectional shape in the end face direction of the groove 21 in the pair of pinching plates 22 is not a shape in which the circumferential length reaches a semicircular shape, but is 1/3 or more of the outer circumference length of the wire rope 11 to be pinched. It is preferable to have a substantially arc shape in a range smaller than 2. Here, if the circumferential length is a substantially arc shape that is less than 1/3 of the outer circumference of the wire rope 11, the width to be pinched is narrow, and the wire is untwisted in the same manner as in the camler etc. This is not preferable because there is a risk that the wire rope 11 is easily damaged, and the concern of damaging the pinched wire rope 11 is increased. Further, if the circumferential length is a substantially arc shape that is ½ or more of the outer circumference of the wire rope 11, the clamping plate 22 is tightened by fastening bolts 17 and nuts 18 that are clamping pressure application members. This is not preferable because when the clamping pressure is applied between the clamping plates 22, the opposing clamping plates 22 interfere with each other and the wire rope 11 may not be held (gripped) with sufficient clamping pressure.

  Moreover, it is preferable that the length in a direction (longitudinal direction) parallel to the groove 21 of the pair of pinching plates 22 is not less than three times the diameter d of the wire rope 11 to be pinched. Here, if the length of the pinching plate 22 is less than three times the diameter d of the wire rope 11, a local pinching force such as a rope clip is applied, and there is a greater concern that the wire rope 11 may be damaged. This is not preferable. Therefore, by setting the length of the clamping plate 22 to be three times or more the diameter d of the wire rope 11, the possibility of applying a local clamping pressure can be greatly reduced. The case where it is set as the length of the range of about 8 to 12 times the diameter d can be illustrated. Incidentally, as the length of the pressure plate 22 is increased, damage to the wire rope 11 can be suppressed. However, if the length of the pressure plate 22 becomes too long, handling becomes difficult and the weight increases. The work may be adversely affected. Therefore, the length of the clamping plate 22 should be in the range of not less than 3 times and not more than 15 times the diameter d of the wire rope 11, and if considering each of the above items, it is further about 8 to 12 times as described above. If the length is within the range, it is more desirable.

  The wire rope gripping tool 12 is assembled by using such a suspension plate 16 and a pair of pinching plates 22 in combination, and has a configuration as shown in FIGS. In the assembled state, the grooves 21 in the pair of pressing plates 22 are arranged so as to face each other, and the suspension plate 16 is arranged on the surface opposite to the surface on which the grooves 21 are provided. At the time of assembly, the male screw portion of the bolt 17 is passed through the bolt hole 16 b of the suspension plate 16, one bolt hole 22 a of the pair of pressing plates 22, and the other bolt hole 22 a of the pair of pressing plates 22, and the nut is passed through the spring washer 23. 18 are screwed together and assembled one by one. At this time, the wire rope 11 is sandwiched and held between the grooves 21 of the pair of pressure plates 22, but the outer surface of the wire rope 11 and the pair of pressure plates 22 do not damage the wire rope 11 at that time. A rubber plate 19 for protection and clearance adjustment as a wire rope protection member is disposed between the surface of the groove 21.

  FIG. 9 is a view from the front direction shown for explaining the detailed configuration and standard dimensions of the rubber plate 19 for protection and clearance adjustment provided in the wire rope gripping tool 12. FIG. 10 is a view from the upper surface direction for explaining the standard dimensions of the protective and gap adjusting rubber plate 19. Referring to FIGS. 9 and 10, the protective and clearance adjusting rubber plate 19 is made of rubber or a synthetic resin plate material or sheet material, and a wire is formed in the groove 21 portion of the pair of pressing plates 22. When the rope 11 is sandwiched, it is wound around the surface of the wire rope 11 so that the outer peripheral surface of the wire rope 11 does not directly contact the surface of the groove 21 of the pair of pressing plates 22 and substantially covers the outer peripheral surface of the wire rope 11. It is desirable that the width of the wire rope 11 is about 3 to 4 times that is close to the circumference ratio π times the diameter d of the wire rope 11. The length of the protective / gap adjusting rubber plate 19 in the longitudinal direction may be at least equal to or longer than the length of the pair of pressing plates 22 in the longitudinal direction. Incidentally, as described with reference to FIG. 4, in the wire rope gripping tool 12 according to the first embodiment, the protective and gap adjusting rubber plate 19 is interposed between the groove 21 portions of the pair of pressing plates 22 to wire. Since the interference allowance 20 having a spacing of about 6 mm is provided between the pair of pressure plates 22 with the rope 11 being sandwiched, the width of the rubber plate 19 for protection and clearance adjustment is completely around the outer circumference of the wire rope 11. Even if it cannot cover, it should just be the size which can be arranged so that the surface of groove 21 of pinching board 22 and the peripheral surface of wire rope 11 may contact directly, and may not be pinched. Conversely, the width of the protective / gap adjusting rubber plate 19 may be somewhat larger than the outer circumference of the wire rope 11 and may have an excess portion. In this case, the excess portion is released by the tightening allowance 20. Thus, it is possible to suppress the occurrence of uneven tightening force. Further, the thickness of the protective / gap adjusting rubber plate 19 can be wound around the wire rope 11 so that the wire rope 11 is not deformed or damaged when strongly pressed between the pair of pressing plates 22. As long as it can be protected, it is possible to exemplify a case where the thickness is about 0.5 to 3 mm.

  In addition, as a characteristic function of the protective and gap adjusting rubber plate 19, as described above, the surface of the groove 21 and the wire rope 11 can also be sandwiched when the outer periphery shape of the wire rope 11 and the groove 21 have different curvatures. It can adjust so that a clearance gap may not arise between outer peripheral surfaces. That is, here, when the groove 21 is formed, the radius of curvature r, which is about 3 mm larger than the diameter d of the wire rope 11, is used as the groove processing radius, so that the wire rope 11 is sandwiched without the rubber plate 19 for protection and clearance adjustment. When pressed, a gap is formed between the outer peripheral surface of the wire rope 11 and the surface of the groove 21 because both radii (curvature radii) are different. When being clamped by the clamping plate 22 by the elastic force of the gap adjusting rubber plate 19, the dimension in its thickness direction is changed so as to eliminate the gap, and the clamping pressure applied to the outer periphery of the wire rope 11. It works to make uniform. As a result, the wire rope 11 to be clamped by the clamp plate 22 of the wire rope gripping tool 12 can be used not only for the maximum diameter but also for different diameters within a certain range. Is increased. If the pair of clamping plates 22 are made of an aluminum plate material, not only the protection and protection by the elastic force of the gap adjusting rubber plate 19, but even if the wire rope 11 is tightened with excessive clamping pressure, Before the wire rope 11 is deformed or damaged, the surface of the groove 21 of the pressure plate 22 is deformed according to the shape of the outer peripheral surface of the wire rope 11, so that the wire rope 11 is protected and reliably held. Can be maintained. In the first embodiment, the rubber plate 19 for protection and clearance adjustment is used as the wire rope protection member, but the clearance between the groove 21 of the pressure plate 22 is adjusted while protecting the wire rope 11. For the purpose, the wire rope protection member may be any material that can be interposed between the wire rope 11 and the pressure plate 22 and also has elasticity, for example, a thick sheet such as a vinyl sheet having a thickness of 0.5 to 3 mm. A synthetic resin sheet or the like can also be used. The shape of the wire rope protection member is desirably a plate shape or a sheet shape.

  The wire rope gripping tool 12 according to the first embodiment having the configuration described above causes the wire rope 11 to be deformed or damaged if the holding area of the clamping surface of the wire rope 11 is small like a known rope clip. It is easy to solve the problem that the wire rope 11 is easily dropped only by gripping the traction force of a traction tool such as a camler, and the holding area of the pressing surface of the wire rope 11 can be set in a wide range, and a considerable degree. A wire rope 11 is secured by fastening a bolt 17 and a nut 18 with a rubber plate 19 for protection and clearance between the surface of the groove 21 and the outer peripheral surface of the wire rope 11 in a pair of pinching plates 22 having a length. The outer surface of the wire rope 11 can be stably held (gripped) without causing deformation or damage, and the wire rope 11 A difficult drop things.

  Further, the wire rope gripping tool 12 according to the first embodiment has a simple structure and is easy to manufacture, and although the protective and gap adjusting rubber plate 19 to be used is a consumable item, the thickness is 0. . Since general-purpose standard specifications of about 5 to 3 mm are used, even if they are insufficient or cannot be used at the site, for example, they can be easily used in general mass merchandising stores that handle such materials. Can be obtained, refilled and exchanged. Even when a synthetic resin sheet is used as a wire rope protection member, for example, a table cover or the like may be purchased and processed at a general mass merchandise store handling such materials. Can be obtained, refilled and replaced.

  Furthermore, the wire rope gripping tool 12 according to the first embodiment is configured such that the radius of curvature r of the groove 21 of the pinching plate 22 is about radius (= d / 2) +3 mm of the wire rope 11 to be pinched, and the outer peripheral surface of the wire rope 11. Since the protective and gap adjusting rubber plate 19 is interposed between the pair of pressing plates 22 and the surface of the groove 21, the protective and gap adjusting rubber plate 19 has the smallest thickness. Considering the pinching pressure when a wire having a diameter of about 5 mm is used, it is possible to cope with a long wire rope 11 having a diameter difference of 5 mm by one type of groove processing. As a result, if the radius of curvature r of the groove 21 in the pinching plate 22 is selected, the pinching plate 22 can be used for various wire ropes 11 having a diameter d of about 16 to 25 mm that is often used in a super high-rise elevator or the like. The two types of wire ropes 11 can be applied to the groove 21 in FIG. In such a case, the wire rope gripping tool 12 can be disassembled if the bolts 17 and nuts 18 are unfastened. For example, two pairs of pressing plates 22 having two different grooved grooves 21 are prepared. If the other component parts do not have two sets, they can be applied to the assembly. If the assembly is performed using only the pressure plate 22 according to the diameter of the wire rope 11, all kinds of components can be used. The wire rope 11 can be used as an object of application, and the weight during carrying is reduced and the carrying amount is reduced, which is very convenient. In particular, when the pressing plate 22 is made of an aluminum plate material, it can greatly contribute to weight reduction.

  In addition, the wire rope gripping tool 12 according to the first embodiment has a clamping allowance 20 that is a gap between the pressing plates 22 of about 6 mm so that the fastening force of the bolt 17 to the nut 18 can be sufficiently obtained. Since the sandwiching pressure is stably maintained, the wire rope 11 can be prevented from falling off with high safety.

  In any case, the wire rope gripping tool 12 according to the first embodiment has a simple structure without requiring complicated and expensive processing since the members of each part only need to be processed with a general material. In addition to being able to be manufactured inexpensively, it has a highly versatile function that can hold the wire rope 11 in a state where it is difficult to drop off while suppressing damage (damage) of the wire rope 11. That is, if the wire rope gripping tool 12 according to the first embodiment is applied, even if the wire rope 11 is 500 m long and has a weight exceeding 1 ton, the wire rope 11 is damaged (damaged). A stable gripping state is maintained without giving, and without falling off, and can handle lifting and towing operations. As a result, the installation work of the elevator main rope 13 for lifting and laying the wire rope 11 described above by the lifting machine 7 can be performed smoothly and safely.

DESCRIPTION OF SYMBOLS 1 Machine room 2 Hoisting machine 3 Sheep 4 Warp wheel 5 Car 6 Carrying weight 7 Lifting machine 8 Pulley 9 Wire 10 Wire rope drum 11 Wire rope 12 Wire rope gripping tool 13 Main rope 14 Sling wire 15 Shackle 16 Suspension plate 16a Suspension part 16b, 22a Bolt hole 17 Bolt 18 Nut 19 Rubber plate for protection and clearance adjustment 20 Tightening allowance 21 Groove 22 Nipping plate 23 Spring washer

Claims (5)

A wire rope gripping tool for gripping a wire rope by clamping with a pair of opposing members,
A pair of pinching plates as the pair of members having grooves of a shape substantially along the outer peripheral shape of the wire rope on opposite surfaces, and a surface of the pair of pressing plates opposite to the surface on which the grooves are formed A suspension plate provided on the surface and capable of attaching a connection tool for pulling the wire rope sandwiched between the pair of clamping plates, and a bolt provided penetrating the pair of clamping plates and the suspension plate; A nut that is screwed to the bolt, and the wire rope is disposed between an outer peripheral surface of the wire rope and a surface of the groove in the pair of clamping plates when the wire rope is clamped by the pair of clamping plates. A wire rope gripping tool comprising: a wire rope protection member.   The wire rope gripping tool according to claim 1, wherein a length of the pair of pinching plates in a direction parallel to the extending direction of the groove is at least three times the diameter of the wire rope. Gripping tool.   3. The wire rope gripping tool according to claim 1, wherein the wire rope protection member has a surface of the groove and an outer peripheral surface of the wire rope when pinched when the outer peripheral shape of the wire rope and the curvature of the groove are different. A wire rope gripping tool that is adjusted so that no gap is formed between the wire rope gripping tool and the wire rope gripping tool.   The wire rope gripping tool according to any one of claims 1 to 3, wherein the wire rope protection member is a rubber or a synthetic resin plate or sheet material. .   The wire rope gripping tool according to any one of claims 1 to 4, wherein the pair of pinching plates are an aluminum plate material or a steel plate material.

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