JP5840162B2 - Main rope detent device, main rope tension adjusting device having the same, and main rope tension adjusting method - Google Patents

Description

  The present invention controls the rotation between the rope end fixing members attached to each of the plurality of main ropes when adjusting the tension of the plurality of main ropes that suspend the elevator car and the counterweight. The present invention relates to a rope detent device, a main rope tension adjusting device having the same, and a main rope tension adjusting method.

  In general, an elevator includes a car, a counterweight, main ropes for suspending the car and the counterweights, and a plurality of rope sockets attached to both ends of the main ropes. Each of the main ropes described above causes a deviation in tension over time, and this deviation causes problems such as acceleration of wear deterioration of the main rope. Accordingly, it is necessary to periodically remove the tension deviation by equalizing the tension of the main rope. In such a tension adjustment operation of the main rope, if each main rope individually rotates around its axis, the tension of the rotated main rope changes. For this reason, it is necessary to regulate the main ropes so that they do not rotate with each other during the tension adjustment operation.

  From such a situation, the technique shown in Patent Document 1 has been proposed. This prior art is a main rope thimble rod detent jig, which connects two thimble rods among a plurality of thimble rods attached to the ends of each main rope and regulates rotation between the thimble rods. Is. This prior art includes, for example, a cap with a first round hole attached to each of an end portion of a first thimble rod of a first main rope and an end portion of a second thimble rod of a second main rope among a plurality of main ropes. And a bar that is inserted into each round hole of the cap with the second round hole to prevent the thimble rod from rotating, and a permanent magnet that prevents the bar from falling out of the round hole.

Japanese Utility Model Publication No. 3-12868

  In the prior art described above, the first thimble rod is attached to the first thimble rod and the second main rope by means of a cap with a round hole and a bar attached to the first thimble rod and the second thimble rod. Although the rotation around the axis between the first main rope and the second main rope to which the second thimble rod is attached can be restricted, there is another problem.

  For example, the end of the first thimble rod and the end of the second thimble rod may have different heights due to tension adjustment of the main rope when the main rope is replaced. When the height of the end of the thimble rod is different, the bars inserted into the round holes of the caps with two round holes are in an oblique state, but the bars inserted into the round holes are limited in the angle at which they can be inclined. Yes, if the end heights of the two thimble rods differ by more than a predetermined value, the bar cannot be inserted into the round hole.

  In addition, when trying to adjust the three main ropes of the first main rope, the second main rope, and the third main rope at the same time, the height of the end of the thimble rod attached to these three main ropes is a straight line. It is not always in line. Since the bar inserted into the round hole of the cap with the round hole is manufactured in a straight line shape, it cannot be inserted into the round hole when the heights of the end portions of the three thimble rods are not aligned in a straight line.

  As described above, in the prior art, depending on the height of the end of each thimble rod, the main ropes cannot be connected to restrict rotation, and the main ropes cannot be prevented from rotating. .

  The present invention has been made to solve the above-described problems, and even if the heights of the end portions of the thimble rods of the main ropes are considerably different, the main ropes are reliably regulated so as not to rotate relative to each other. An object of the present invention is to provide a main rope detent device that can be used.

  It is another object of the present invention to provide a main rope tension adjusting device including the main rope detent device and a main rope tension adjusting method.

  In order to achieve the above object, a main rope detent device according to the present invention includes a carriage, a counterweight, a plurality of main ropes for suspending the counterweight and the counterweight, and an end of the main rope. A plurality of thimble rods including a first thimble rod and a second thimble rod, a spring supporting the main rope via the thimble rod, and an amount of expansion and contraction of the spring by being screwed to the thimble rod. A nut to be determined, and a rope socket that connects the main rope and the thimble rod, and is used in an elevator including a plurality of rope end fixing members including a first rope end fixing member and a second rope end fixing member; In the main rope detent device for restricting rotation between the plurality of rope end fixing members, the thimbles of the plurality of rope end fixing members A plurality of first round bar mounting members and second round bar mounting members that have a through hole into which the corresponding one of the first round bar and the second round bar can be inserted. A round bar attaching member and a first round bar inserted into a through hole of the first round bar attaching member attached to the end of the first thimble rod of the first rope end fixing member are rotatably connected. The first elongated body having rigidity, and the second elongated body connected to the first elongated body so as to be relatively rotatable and attached to the second thimble rod end portion of the second rope end fixing member. The second rod is rotatably connected to the second rod inserted into the through hole of the rod mounting member, and has a rigid second elongated body.

  A tension adjusting device for a main rope according to the present invention includes the above-described main rope detent device, and moves a thimble rod lifting member provided on each of the plurality of rope end fixing members and the thimble rod lifting member. A plurality of hydraulic cylinders, a cylinder base that transmits a reaction force of the spring to the corresponding hydraulic cylinders, and a single hydraulic pump that operates the hydraulic cylinders. In the main rope tension adjusting device that adjusts the tension of the main rope by moving the thimble rod lifting member by supplying the cylinder base, the cylinder base has a split structure that can be attached and detached from the horizontal direction. It is characterized by that.

  The main rope tension adjusting method of the present invention is the main rope tension adjusting method of adjusting the tension of the main rope using the above-described main rope tension adjusting device. The hydraulic cylinder and the thimble rod lifting member are installed, and the main rope detent device is installed in this state, and then the divided cylinder base is assembled and installed between the hydraulic cylinder and the spring. It is characterized by adjusting the tension of the main rope.

  According to the main rope detent device, the main rope tension adjusting device including the main rope detent device, and the main rope tension adjusting method according to the present invention, the height of the end of the thimble rod of each main rope is increased. Even if the lengths are considerably different, the main ropes can be reliably regulated so as not to rotate with respect to each other. Thereby, this invention contributes to the efficiency improvement of the tension adjustment work of the main rope.

It is a figure which shows schematic structure of the elevator in which the rotation prevention apparatus of the main rope which concerns on one Embodiment of this invention is used. It is a front view which shows the rope end fixing member with which the elevator shown in FIG. 1 is equipped. It is a front view which shows the state which mounted | wore the rope end fixing member shown in FIG. 2 with one Embodiment of the rope tension adjustment apparatus which has the detent | locking apparatus of the main rope which concerns on one Embodiment of this invention. It is a front view which shows the detent | locking apparatus of the main rope which concerns on this embodiment. It is a top view which shows the detent | locking apparatus of the main rope which concerns on FIG. It is a front view which shows the state which removed the elongate member and the round bar from the state shown in FIG. It is a front view which shows the round bar attachment member shown in FIG. FIG. 8 is a side view of FIG. 7. It is a front view which shows the cylinder base with which the rope tension adjustment apparatus which concerns on one Embodiment of this invention is equipped. FIG. 10 is a plan view of the cylinder base shown in FIG. 9. It is a front view which shows the principal part of the cylinder base shown in FIG. It is a top view which shows the principal part of the cylinder base shown in FIG. It is a front view which shows the stopper with which the cylinder base shown in FIG. 10 is equipped. It is a side view of the stopper shown in FIG. It is a figure explaining the case where an integrated cylinder base is attached to a rope tension adjustment apparatus. It is a front view which shows the state at the time of the assembly | attachment of the rope tension adjustment apparatus which concerns on this embodiment.

  DESCRIPTION OF EMBODIMENTS Embodiments of a main rope detent device, a main rope tension adjusting device having the main rope tension adjusting device, and a main rope tension adjusting method according to the present invention will be described below with reference to the drawings.

  In the following, in order to facilitate understanding, in the general description part, the corresponding parts and members are described with general symbols (for example, the main rope 3), and individual parts and members are described. In the detailed description part, the corresponding parts and members will be described with individual symbols (for example, the first main rope 3A, the second main rope 3B, and the third main rope 3C).

  FIG. 1 is a diagram showing a schematic configuration of an elevator in which a main rope detent device according to an embodiment of the present invention is used, and FIG. 2 is a front view showing a rope end fixing member provided in the elevator shown in FIG.

  The elevator shown in FIG. 1 is a typical 2: 1 roping elevator. As shown in FIG. 1, the elevator includes a car 1, a counterweight 2, and a main rope 3 that suspends the car 1 and the counterweight 2. One end 3a and the other end 3b of the main rope 3 are held by a machine beam 4 provided in a machine room arranged at the upper part of the hoistway. The main rope 3 is inserted into the through hole 5 and moves back and forth between the machine room and the hoistway, while the car sheave 6 provided in the car 1, the traction sheave 7 and the deflecting sheave 8 provided in the machine room, and the counterweight 2 The elevator car 1 is moved up and down by being wound around a counterweight sheave 9 provided on the vehicle.

  A rope end fixing member 10 is attached to each of the one end 3a and the other end 3b of the main rope 3, as shown in FIG. The rope end fixing member 10 includes a spring 13 that supports the main rope 3 via a thimble rod 12 attached to the end of the main rope 3, and a nut 14 that is screwed into the thimble rod 12 to determine the amount of expansion and contraction of the 13 spring. , And a rope socket 11 for connecting the main rope 3 and the thimble rod 12.

  Here, for example, the main rope 3 includes a first main rope 3A, a second main rope 3B, and a third main rope 3C. The thimble rod 12 includes a first thimble rod 12A, a second thimble rod 12B, and a third thimble rod 12C. The rope end fixing member 10 includes a first rope end fixing member 10A, a second rope end fixing member 10B, and a third rope end fixing member 10C.

  The first rope end fixing member 10A is attached to the first thimble rod 12A, the second rope end fixing member 10B is attached to the second thimble rod 12B, and the third rope end fixing member 10C is attached to the third thimble rod 12C. ing. A through hole 12Aa, a through hole 12Ba, and a through hole 12Ca are provided at each end of each thimble rod 12A, 12B, 12C.

  FIG. 3 is a front view showing a state in which one embodiment of a rope tension adjusting device having a main rope detent device according to one embodiment of the present invention is attached to the rope end fixing member shown in FIG.

  The rope tension adjusting device according to the present embodiment includes a main rope detent device 15 according to the present embodiment, which will be described later, a thimble rod lifting member 18 provided on each of the plurality of rope end fixing members 10, and the thimble. A plurality of hydraulic cylinders 19 that move the rod lifting member 18, a cylinder base 17 that transmits the reaction force of the spring 13 to the corresponding hydraulic cylinder 19 of the hydraulic cylinder 19, and a single hydraulic pump (not shown) that operates the hydraulic cylinder 19 And. By supplying pressure oil to each of the hydraulic cylinders 19 by a hydraulic pump, the thimble rod lifting member 18 is moved to adjust the tension of the main rope 3.

  The cylinder base 17 is disposed so as to be sandwiched between the hydraulic cylinder 19 and the spring 13. A main rope detent device 15 according to the present embodiment, which will be described later, is attached to the end of the thimble rod 10.

  The rope tension adjusting device according to the present embodiment having the above-described configuration supplies pressure oil to each hydraulic cylinder 19 by a single hydraulic pump (not shown), and raises each hydraulic cylinder 19 to achieve a uniform pressure. All the hydraulic cylinders 19 push up the thimble rod lifting members 18 with equal force. Even if there is an imbalance in the plurality of main ropes 3, the uniform hydraulic pressure is applied to each hydraulic cylinder 19, so that it is pulled up from the thimble rod 12 with the lowest tension. Even tension. In this way, the tension of each main rope 3 is uniformly adjusted by the uniform pushing force of the hydraulic cylinder 19.

  Here, the main rope detent device 15 attached to the end of the thimble rod 12 is for preventing each of the main ropes 3 from rotating during the adjustment of the tension of the main rope 3. Further, the cylinder base 17 provided in the rope tension adjusting device according to the present embodiment is mounted from the horizontal direction as described later in order to enable work when the detent device 15 for the main rope 3 is provided. And a split structure that can be detached.

  When the main rope 3 is normal, the main rope 3 is prevented from rotating by the frictional force between the washer disposed above the spring 13 and the nut 14. However, when the tension of the main rope 3 is adjusted, a distance is provided between the nut 14 and the washer to temporarily remove the friction that stops the rotation of the main rope 3, so that the main rope 3 can rotate. . For this reason, it is necessary to use the main rope detent device 15.

  Next, the main rope detent device 15 according to this embodiment will be described.

  4 is a front view showing the main rope detent device according to this embodiment, FIG. 5 is a plan view showing the main rope detent device according to FIG. 4, and FIG. FIG. 7 is a front view showing a state where the round bar is removed, FIG. 7 is a front view showing the round bar mounting member shown in FIG. 6, and FIG. 8 is a side view of FIG.

  As shown in FIGS. 4 and 5, the main rope detent device 15 according to the present embodiment can be inserted into each end of the first thimble rod 12 </ b> A and the second thimble rod 12 </ b> B of the plurality of rope end fixing members 10. In addition, a round bar mounting member including a first round bar mounting member 20A into which a corresponding one of the first round bar 22a and the second round bar 22b of the round bars 22 is inserted, and a second round bar mounting member 20B. 20 is provided. Further, the main rope detent device 15 is rotatable to the first round bar 22a inserted into the first round bar mounting member 20A attached to the end of the first thimble rod 12A of the first rope end fixing member 10A. The first elongated body having rigidity, that is, the first plate 23a made of metal is provided. Further, the main rope detent device 15 is connected to the first plate 23a so as to be relatively rotatable, and is attached to the end of the second thimble rod 12B of the second rope end fixing member 10B. The second round bar 22b inserted into the member 20B is rotatably connected to the second elongated body having rigidity, that is, a second plate 23b made of metal.

  As shown in FIGS. 6 to 8, for example, the first round bar mounting member 20 </ b> A is inserted into the end of the first thimble rod 12 </ b> A. The first round bar mounting member 20A is provided with a through hole 20Aa into which the first round bar 22a is inserted and a fixing through hole 20Ab formed at a position shifted by 90 ° from the through hole 20Aa. By fixing the through hole 20Ab for fixing and the through hole 12Aa provided at the end of the first thimble rod 12A, and inserting the pin 21 into the through hole 20Ab and the through hole 12Aa, the first round rod mounting member 20A Can be fixed to the first thimble rod 12A.

  The second round rod mounting member 20B is also provided with a through hole 20Ba and a fixing through hole. By inserting the pin 21 into the fixing through hole and the through hole 12Ba of the second thimble rod 12B, The two round bar mounting member 20B can be fixed to the second thimble rod 12B.

  As shown in FIG. 4, the main rope detent device 15 according to this embodiment includes a plurality of, for example, two sets of combinations of the first plate and the second plate. That is, in the present embodiment, a first plate 23c that is rotatably connected to a second round bar 22B that is inserted into the through hole 20Ba of the second round bar mounting member 20B, and a relative rotation to the first plate 23c. A second plate 22d that is movably connected and is rotatably connected to a third round bar 22c that is inserted into the through hole 20Ca shown in FIG. 6 of the third round bar mounting member 20C.

  The third round rod mounting member 20C is also provided with a fixing through hole at a position shifted by 90 ° from the through hole 20Ca. As shown in FIG. 6, the fixing through hole and the through hole of the third thimble rod 12C By inserting the pin 21 into 12Ca, the third round bar mounting member 20C can be fixed to the third thimble rod 12C.

  During the tension adjustment work of the first main rope 3A performed in a state where the main rope detent device 15 according to this embodiment is attached to the first thimble rod 12A, the second thimble rod 12B, and the third thimble rod 12C, When the first round bar 22a inserted into the through hole 20Aa of the first round bar attachment member 20A attached to the end of the first thimble rod 12A and the first thimble rod 12A move in the vertical direction, the first round bar 22a On the other hand, the first plate 23a rotates, the first plate 23a and the second plate 23b rotate relatively, and the through hole of the second round bar mounting member 20B attached to the end of the second thimble rod 12B. The second plate 23b rotates with respect to the second round bar 22b inserted into 20Ba.

  By such each rotation operation, the combined shape of the first plate 23a and the second plate 23b changes. Due to this change in shape, the influence of the vertical movement of the first round bar 22a and the first thimble rod 12 is absorbed, and the second thimble rod 12B attached to the second main rope 3B is replaced with the first round bar 22a. In addition, the first thimble rod 12 can be kept in a state that is not affected by the vertical direction regardless of the vertical movement of the first thimble rod 12.

  In addition, while the tension adjustment work of the first main rope 3A is performed in this way, the first plate 23c and the second plate 23d constituting the second set do not rotate and are therefore attached to the third main rope 3C. The third thimble rod 12C is kept in a state not affected by the movement of other thimble rods in the vertical direction. During such an operation, the first round bar 22a, the second round bar 22b, and the third round bar 22c are maintained in a mutually parallel state.

  Further, when performing the tension adjustment work of the second main rope 3B, the second round bar 22b inserted into the through hole 20Ba of the second round bar attachment member 20B attached to the end of the second thimble rod 12B and the second When the thimble rod 12B moves in the vertical direction, the second plate 23b and the second set of the first plate 23c rotate relative to the second round bar 22b, and the second plate 23b and the first plate 23c are relative to each other. And the second set of the first plate 23c and the second plate 23d rotate relatively, the first plate 23a rotates relative to the first round bar 22a, and the third round bar 22c. In contrast, the second set of second plates 23d rotates.

By such each rotation operation, the combined shape of the first plates 23a and 23c and the second plates 23b and 23d changes. Due to this shape change, the influence of the vertical movement of the second round bar 22b and the second thimble rod 12B is absorbed, and the first thimble rod 12A and the third main rope 3C attached to the first main rope 3A. The third thimble rod 12C attached to can be maintained in a state that is not affected in the vertical direction regardless of the vertical movement of the second round bar 22b and the second thimble rod 12B. During such an operation, the first round bar 22a, the second round bar 22b, and the third round bar 22c are maintained in a mutually parallel state.
Further, when performing the tension adjustment work of the third main rope 3C, the third round bar 22c and the third thimble inserted into the through hole 20Ca of the third round bar attachment member 20C attached to the end of the third thimble rod 12C. When the rod 12C moves in the vertical direction, the second set of second plates 23d rotates with respect to the third round bar 22c, and the second plate 23d and the second set of first plates 23c rotate relative to each other. The first plate 23c rotates with respect to the second round bar 22b.

  By such each rotation operation, the combination shape of the second set of the first plate 23c and the second plate 23d changes. Due to this change in shape, the influence of the vertical movement of the third round bar 22c and the third thimble rod 12C is absorbed, and the second thimble rod 12B attached to the second main rope 3B is replaced with the third round bar 22c. The third thimble rod 12C can be maintained in a state that is not affected by the vertical direction regardless of the vertical movement of the third thimble rod 12C.

  During the tension adjustment work of the third main rope 3B in this way, the first set of the second plate 23b and the first plate 23a do not rotate, and therefore the first set attached to the first main rope 3A. The thimble rod 12A is kept in a state not affected by the movement of other thimble rods in the vertical direction. During such an operation, the first round bar 22a, the second round bar 22b, and the third round bar 22c are maintained in a mutually parallel state.

  As described above, the main rope detent device 15 according to this embodiment includes the first, second, and third round bars 22a, 22b, and 22c, the rigid first plates 23a and 23c, and the second plate 23b. , 23d, etc., the rotation prevention of the first main rope 3A, the second main rope 3B, and the third main rope 3C can be realized. In the present embodiment, the tension adjustment work is performed by changing the combination shape of the first set of the first plate 23a and the second plate 23b, and the second set of the first plate 23c and the second plate 23d. The influence of the tension adjustment of the corresponding main rope 3 is absorbed, and at the same time, the influence of the tension adjustment of the other main rope 3 that is prevented from rotating is absorbed, and the tension adjustment work of the corresponding main rope 3 can be performed. . Thereby, according to this embodiment, other main ropes 3 accompanying the influence of the tension adjustment work of the applicable main rope 3 among the first main rope 3A, the second main rope 3B, and the third main rope 3C. No tension adjustment is required, the tension adjustment work of the main rope 3 is simplified, and the efficiency of the tension adjustment work of the main rope 3 can be improved.

  In the above description, the first, second, and third thimble rods 12A, 12B, and 12C have been individually adjusted for tension to facilitate understanding, but the first main rope 3A, The first, second, and third thimble rods 12A, 12B, and 12C of the second main rope 3B and the third main rope 3C, and the vertical directions of the first, second, and third round bars 22a, 22b, and 22c Does not affect the other corresponding thimble rods 12A, 12B, and 12C and the round bars 22a, 22b, and 22c, so that the first main rope 3A, the second main rope 3B, and the third main rope 3C are simultaneously moved. When the tension is adjusted by moving it, it works in the same way and does not affect each other. As a result, even when the first, second, and third main ropes 3A, 3B, and 3C are simultaneously moved to adjust the tension, a good detent performance can be exhibited. As a result, the first, second, and third main ropes 3A, 3B, and 3C can be moved up and down without affecting each other even if there is a significant difference in height. The main ropes 3A, 3B, 3C can be reliably regulated so as not to rotate with each other. Thereby, this embodiment contributes to the efficiency improvement of the tension adjustment work of 1st, 2nd, 3rd main rope 3A, 3B, 3C.

  In addition, since the present embodiment includes a combination of two plates, ie, the first plate 23a and the second plate 23b, and the first plate 23c and the second plate 23d, the two main ropes 3A, Not only 3B but also the third main rope 3C can be prevented from rotating and adjusting the tension.

  In the present embodiment, the length of the second round bar 22b inserted into the through hole 20Ba of the second round bar mounting member 20B attached to the end of the second thimble rod 12B is set to the other first length. , Different from the length dimensions of the first and third round bars 22a, 22c according to the third thimble rods 12A, 12C, for example, a long dimension. With this configuration, for example, the distance from the reference position such as the wall surface position of the elevator hoistway to the second thimble rod 12B is the distance from the reference position to the position of the first thimble rod 12A and the first position from the reference position. This is effective when the distance to the position of the three thimble rods 12C is different. In such a case, the first thimble rod 12A, the second thimble rod 12B, and the third thimble rod 12C are related to this embodiment. The main rope detent device 15 can be stably held. In this way, the first, second, and third round bars 22a, 22b, and 22c can prevent rotation of the main rope 3 in various forms with different rope arrangements by adjusting the lengths thereof.

  Next, the aforementioned cylinder base provided in the rope tension adjusting device according to this embodiment will be described.

  9 is a front view showing a cylinder base provided in a rope tension adjusting device according to an embodiment of the present invention, FIG. 10 is a plan view of the cylinder base shown in FIG. 9, and FIG. 11 is a main part of the cylinder base shown in FIG. 12 is a plan view showing the main part of the cylinder base shown in FIG. 11, FIG. 13 is a front view showing a stopper provided in the cylinder base shown in FIG. 10, and FIG. 14 is a side view of the stopper shown in FIG. FIG.

  As shown in FIGS. 9 and 10, the cylinder base 17 provided in the rope tension adjusting device according to the present embodiment has a pair of main parts 17 a forming a cylindrical body and the main parts 17 a facing each other. It consists of two stoppers 17b to be fixed.

  As shown in FIGS. 11 and 12, the main portion 17 a of the cylinder base 17 includes a semicircular portion 24, joint portions 25 provided at both ends of the radius portion 24, and bending portions provided at these joint portions 25. The opening portion 16 is formed at the center position of the semicircular portion 24.

  Further, as shown in FIG. 12, one of the two joints 25 is provided with a projection 26 at one joint 25, and the other joint 25 has a joint 25 of the other main part 17a. An engagement hole 27 is provided to engage with the protrusion 26 formed on the surface. In other words, the pair of main portions 17 a are assembled with each other through the fitting of the protruding portion 26 and the engaging hole 27.

  As shown in FIG. 13, the stopper 17b has a bifurcated shape. As shown in FIGS. 9 and 10, the joint 17 of the main portion 17a is inserted between the bifurcated portions so that the stopper 17b is used as the main portion. Incorporation into the part 17a is performed. As shown in FIG. 14, the stopper 17b is formed with a bent portion 17b1 for easy gripping with a finger.

  A part attachment procedure of the rope tension adjusting device according to this embodiment having the cylinder base 17 described above will be described below with reference to FIGS.

  FIG. 15 is a view for explaining a case where the integral cylinder base is attached to the rope tension adjusting device, and FIG. 16 is a front view showing a state when the rope tension adjusting device according to the present embodiment is assembled.

  As shown in FIG. 2, the nut 14 which comprises the rope end fixing member 10 consists of the adjustment nut 14a and the fixing nut 14b. By tightening the adjusting nut 14a and the fixing nut 14b, each of the adjusting nuts 14a and the corresponding thimble rod 12 are fixed. Further, the frictional force between the adjusting nut 14a and the washer disposed above the spring 13 prevents the rope end fixing member 10 including the thimble rod 12 from rotating as described above.

  When the tension of the main rope 3 is adjusted, the fixing nut 14b is once loosened to make the adjusting nut 14a rotatable, and then the adjusting nut 14a is turned to change the position. Here, in order to prevent the main rope 3 from rotating, it is necessary to perform a rotation prevention process of the rope end fixing member 10 before loosening the fixing nut 14b.

  When the main rope detent device 15 according to the present embodiment uses the integrated cylinder base 17A, before attaching the main rope detent device 15 to the end of the rope end fixing member 10, the thimble rod lifting member 18, It is necessary to attach the hydraulic cylinder 19 and the cylinder base 17A to the rope end fixing member 10. However, as shown in FIG. 15, if the integral cylinder base 17A is attached to the rope end fixing member 10, the nut 14 (adjustment nut 14a, fixing nut 14b) is covered, so the fixing nut 14b is loosened with a tool. I can't do that. The integral cylinder base 17A referred to here is a cylindrical shape that cannot be divided in half or the like.

  In the rope tension adjusting device according to the present embodiment, as shown in FIG. 16, the main rope detent device 15 is first attached with the thimble rod lifting member 18 and the hydraulic cylinder 19 other than the cylinder base 17 attached. Is done.

  In this state, there is no obstacle around the nut 14, so that the fixing nut 14b can be loosened using a tool such as a spanner. At this time, since the main rope detent device 15 is already attached, the main rope 3 is regulated so as not to rotate.

  After loosening the fixing nut 14b, each of the main portions 17a of the pair of cylinder bases 17 is attached from the horizontal direction so as to sandwich the thimble rod 12 and the nut 14, and these main portions 17a are fixed by the stopper 17b. Is done.

  The part attachment of the rope tension adjusting device according to the present embodiment to the rope end fixing member 10 is completed while restricting the rotation of the main rope 3 by the above procedure. Thereafter, the rope tension adjustment work is performed by a predetermined work procedure using the rope tension adjustment device according to the present embodiment.

  In addition, when performing the rope tension adjustment work using the rope tension adjusting device according to the present embodiment, there may be a case where the height above the nut 14 of the thimble rod 12 is insufficient. In such a case, it is convenient to provide an extension rod having the same diameter as that of the thimble rod 12 that is prevented from rotating with respect to the thimble rod 12 at the tip of the thimble rod 12. Good. The extension rod has the same shape as the thimble rod 12 for the purpose of use. When such an extension rod is used, the main rope detent device 15 according to the present embodiment may be attached to the distal end of the extension rod in the same procedure as the attachment to the distal end of the thimble rod 12. By doing in this way, the effect similar to embodiment mentioned above can be acquired.

  In the embodiment, the combination of the first plate 23a and the second plate 23b movably attached to each of the first round bar 22a and the second round bar 22b, and the second round bar 22b and the third round bar 22c. Two combinations of the first plate 23c and the second plate 23d, which are movably attached to each other, are provided. The present invention is a combination of one set of the first plate and the second plate. In accordance with the number of main ropes 3, three or more combinations of the first plate and the second plate can be provided. For example, in an elevator that has five main ropes 3 and these five main ropes 3 are arranged like the eyes of a dice, three of the five main ropes 3 The rope 3 is prevented from rotating by the main rope detent device 15 according to the present embodiment, and the remaining two main ropes 3 are rotated by another main rope detent device having a round bar 22 of the same length. You can stop it. By doing in this way, rotation prevention of all the main ropes 3 with which an elevator is equipped can be performed.

DESCRIPTION OF SYMBOLS 1 Passenger car 2 Counterweight 3 Main rope 3A 1st main rope 3B 2nd main rope 3C 3rd main rope 10 Rope end fixing member 10A 1st rope end fixing member 10B 2nd rope end fixing member 10C 3rd rope end fixing member 11 rope socket 12 thimble rod 12A first thimble rod 12Aa through hole 12B second thimble rod 12Ba through hole 12C third thimble rod 12Ca through hole 13 spring 14 nut 14a adjustment nut 14b fixing nut 15 main rope detent device 16 opening 17 cylinder base 17a main part 17b stopper 17b1 bent part 17A integral cylinder base 18 thimble rod lifting member 19 hydraulic cylinder 20 round bar mounting member 20A first round bar mounting member 20Aa through hole 20Ab solid Through hole 20B second round bar mounting member 20Ba through hole 20C third round bar mounting member 20Ca through hole 21 fixing pin 22 round bar 22a first round bar 22b second round bar 22c third round bar 23a first plate (first 1 long member)
23b Second plate (second long member)
23c First plate (first elongated member)
23d Second plate (second long member)
24 Semicircular part 25 Joint part 25a Bending part 26 Projection part 27 Engagement hole

Claims (3)

A plurality of thimbles including a first thimble rod and a second thimble rod attached to each end of the main rope, a plurality of main ropes for suspending the carriages, the counterweights, and the carriages and the counterweights. A rod, a spring that supports the main rope via the thimble rod, a nut that is screwed into the thimble rod to determine the amount of expansion and contraction of the spring, and a rope socket that connects the main rope and the thimble rod A main rope detent device for use in an elevator having a plurality of rope end fixing members including a first rope end fixing member and a second rope end fixing member and restricting rotation between the plurality of rope end fixing members In
A first round bar mounting member which can be inserted into the thimble rod end portions of the plurality of rope end fixing members and has a through hole into which a corresponding one of the first round bar and the second round bar is inserted; A plurality of round bar mounting members including two round bar mounting members;
The first rope end fixing member is pivotally connected to the first round bar inserted into the through hole of the first round bar attachment member attached to the first thimble rod end of the first rope end fixing member, and has a first rigidity. A long body,
It is connected to the first elongated body so as to be relatively rotatable, and is inserted into a through hole of the second round bar mounting member attached to the end of the second thimble rod of the second rope end fixing member. A main rope detent device comprising: a second elongated body that is rotatably connected to the second round bar and has rigidity. The main rope anti-rotation device according to claim 1, a thimble rod lifting member provided on each of the plurality of rope end fixing members, a plurality of hydraulic cylinders for moving the thimble rod lifting member, and the spring A cylinder base that transmits the reaction force to the corresponding hydraulic cylinder, and a single hydraulic pump that operates the hydraulic cylinder,
In the tension adjusting device for the main rope that adjusts the tension of the main rope by moving the thimble rod lifting member by supplying pressure oil to each of the hydraulic cylinders by the hydraulic pump,
The main rope tension adjusting device according to claim 1, wherein the cylinder base has a split structure that can be attached and detached from a horizontal direction. In the main rope tension adjustment method of adjusting the tension of the main rope using the tension adjustment device of the main rope according to claim 2,
Installing the hydraulic cylinder and the thimble rod lifting member on each of the plurality of rope end fixing members;
In this state, install the main rope detent device,
After that, the main rope tension adjustment method is characterized in that the tension of the main rope is adjusted by assembling and installing the divided cylinder base between the hydraulic cylinder and the spring.

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