JP6643143B2 - Main rope rod rotation prevention jig - Google Patents

Description

  The present invention relates to a main rope rod rotation preventing jig used for adjusting the tension of a main rope at a connection portion between a plurality of main ropes of an elevator and a counterweight.

  In an elevator, a car and a counter weight are connected by a plurality of main ropes, and the car is moved up and down by driving a hoist in a machine room. In such an elevator, the work of adjusting the tension of the main rope is required because the main rope elongates due to long-term use.

  Patent Literature 1 describes a configuration in which sockets are attached to ends of two main ropes on the counterweight side, double-sided bolts penetrate through holes in each socket, and two plates are attached to both ends of the double-sided bolts. Have been. The two plates are hung over both ends of the two double-headed bolts, and of the double-sided bolts, a nut is coupled to the outside of the plate, and the nut sandwiches two sockets through the plate. Thereby, the rotation of the socket can be stopped when adjusting the tension of the main rope.

  Patent Literature 2 discloses an insertion portion inserted into a hole of a socket attached to an end of a main rope, and a contact portion disposed on both sides of the insertion portion and capable of holding the socket between the insertion portion. It is described that the rotation of the socket is stopped by using a rotation stop tool having the rotation stop tool.

  Patent Literature 3 describes a configuration in which a terminal of a main rope is attached to a suspension plate via a thimble rod, and a U-shaped engagement portion of a detent tool is engaged with one thimble rod. . In this configuration, the split nut and the holding portion of the rotation preventing tool are engaged with the external thread portion of the other thimble rod so as to sandwich the split pin. In this configuration, the split nut suppresses rotation of the engaged thimble rod.

JP-A-7-172732 JP-A-2001-199653 Japanese Utility Model Publication No. 5-26973

  By the way, in an elevator, a rope-side rod member attached to an end of a main rope and a weight-side rod member attached to an end of a counterweight may be foldably connected. In such a configuration, it is desired to prevent the rod member from rotating without inserting the jig into the rod member or screwing the jig into the rod member. Patent Literatures 1 to 3 disclose that a rod member attached to an end of a main rope stops rotation without inserting a jig or engaging a jig with a screw. Not.

  SUMMARY OF THE INVENTION It is an object of the present invention to provide a main rope rod rotation preventing jig capable of preventing rotation without inserting a jig or screwing a jig in a rod member connected to a counterweight side end of a main rope. The purpose is to realize.

The main rope rod rotation preventing jig according to the present invention is a main rope rod rotation preventing jig used for adjusting tension of the main rope at a connection portion between a plurality of main ropes of an elevator and a counterweight, wherein the main rope is A U-shaped part fitted to the outside of a rod member connected to the counterweight side end of the U-shaped part, the U-shaped part including a base part and two arms coupled to both ends of the base part; A shaft fixed to project in the opposite direction to the arm, and a bolt coupled to the arm of at least one of the two arms, wherein the one arm has is configured to be butted to the rod member by screwing the tip so as to protrude the rod member, the shaft portion is detachably fixed by screws attached to the base portion There.

  ADVANTAGE OF THE INVENTION According to the main rope rod rotation prevention jig which concerns on this invention, it is screwed in at least one arm part so that the front-end | tip part of the bolt couple | bonded with one arm part may project to a rod member side, and may contact | abut on a rod member. Thus, the jig can be held by the rod member. Then, in this state, the shaft portion engages with the rod member connected to the end of the other main rope, so that the rod member to which the jig is fixed can be prevented from rotating. Also, at this time, there is no need to insert a jig into the rod member or screw the jig to the rod member.

It is a perspective view which shows the connection part of the main rope which prevents rotation by the main rope rod rotation prevention jig of embodiment concerning this invention, and a counterweight. 2A is an enlarged cross-sectional view of FIG. 1A, and FIG. 1B is a view of a portion B of FIG. It is a perspective view of a main rope rod rotation prevention jig of an embodiment. It is the figure which looked at the main rope rod rotation prevention jig shown in FIG. 3 from the upper direction. It is a front view of the main rope rod rotation prevention jig shown in FIG. It is a figure which shows a shaft part and a U-shaped part separately in FIG. It is a figure which shows the operation | work which fixes the main rope rod rotation prevention jig to one rod member among the several rod members connected to the upper part of the counter weight, and stops the rod member from rotating. It is a figure showing a cap which constitutes a main rope rod rotation prevention jig of another example of an embodiment concerning the present invention. FIG. 9 is a cross-sectional view illustrating a state in which the cap illustrated in FIG. 8 is fitted to an end of a connection pin of a rod member, and a tip end of a bolt of a main rope rod rotation preventing jig is abutted against an end surface of the connection pin. It is the figure which looked at FIG. 9 from the upper part. FIG. 10 is a view corresponding to FIG. 9 showing a state in which another example of the cap is fitted to an end of a connection pin of a rod member.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The shapes, quantities, materials, and the like described below are examples for explanation, and can be appropriately changed according to the specifications of the elevator to which the main rope rod rotation preventing jig is applied. Hereinafter, the same elements will be denoted by the same reference numerals in all drawings. Further, in the description in the text, the symbols described earlier are used as necessary.

  FIG. 1 is a perspective view showing a connecting portion between a main rope 50 and a counterweight 60 for preventing rotation by a main rope rod rotation preventing jig 10 (FIG. 3) of the embodiment. FIG. 2 is an enlarged cross-sectional view (A) of AA in FIG. 1 and a view (b) of a portion B in (a) viewed from left to right.

  In the elevator 40, a car (not shown) and a counter weight 60 are connected by a plurality of main ropes 50 in a hoistway 41, and a hoist (not shown) arranged in a machine room (not shown). As the main rope 50 moves by the driving of the car, the car moves up and down.

  The counter weight 60 is guided in the vertical direction by the counter rail 42. The counter rail 42 is a guide rail for guiding the movement of the counter weight 60.

  The counterweight 60 includes a substantially rectangular frame 61 and a plurality of weights 62, and the frame 61 and the plurality of weights 62 are integrated. The weight 62 has a rectangular parallelepiped shape, and is vertically stacked inside the frame body 61. The frame 61 is formed of a metal such as iron. The weight 62 is formed of a metal such as iron or concrete.

  In the use state of the elevator 40, the counter weight 60 is disposed between the two counter rails 42, and each counter rail 60 is guided by guide shoes 63 attached to both ends of the counter weight 60 in the vertical direction at both ends in the horizontal direction. It is supported by 42 so as to be able to move up and down.

  The ends of the plurality of main ropes 50 are connected to the upper end of the counterweight 60 via a rope-side rod member 51 and a weight-side rod member 70.

  The weight-side rod member 70 includes a rod body 71 having a threaded portion 72 formed at the lower end, and a nut 73 coupled to the male threaded portion 72 by two. At the upper end of the weight-side rod member 70, a head 70a is formed which extends in the width direction (the direction of the front and back of the sheet of FIG. 2). In the head 70a, a columnar connection pin 75 is penetrated in a direction perpendicular to the longitudinal direction of the weight-side rod member 70 (the front-back direction of the paper surface of FIG. 1 and the left-right direction of FIG. 2).

  A rope-side rod member 51 is connected to an end of the main rope 50 on the counterweight 60 side as a rope terminal. The rope-side rod member 51 has two arm portions 52 each of which has a distal end divided into two branches. The head 70a of the weight side rod member 70 is disposed inside the two arms 52, and in this state, the connection pin 75 penetrates the arm 52 and the head 70a. Split pins 76 are diametrically inserted into portions of both ends of the connection pin 75 that protrude outside the arm 52, and both ends protrude from the outer peripheral surface of the connection pin 75. As shown in FIG. 2B, the distal end of the split pin 76 is bifurcated. As a result, the split pins 76 prevent the connection pins 75 from falling off from the rope-side rod members 51. For this reason, the weight side rod member 70 is connected to the main rope 50. Further, a weight-side rod member 70 is connected to the rope-side rod member 51 so as to be bendable.

  The upper end plate portion 61a provided at the upper end portion of the frame 61 of the counter weight 60 has a lower end portion of the weight-side rod member 70 penetrating from the upper side to the lower side and projecting downward from the upper end plate portion 61a. The two nuts 73 are overlapped and connected. Thus, the tension of the main rope 50 between the counterweight 60 and the car can be adjusted by adjusting the length of the weight-side rod member 70 protruding from the upper surface of the upper end plate portion 61a of the counterweight 60. Become.

  When adjusting the tension of the main rope 50, the position of the nut 73 in the external thread portion 72 of the weight side rod member 70 is adjusted using a tool such as a spanner. For example, when the tension varies among the plurality of main ropes 50, the nut 73 of the weight-side rod member 70 coupled to the main rope 50 having a small tension is tightened. In this case, simply turning the nut 73 with a tool may cause the weight-side rod members 70 to rotate together. This may require a long time for the tension adjustment operation. At this time, it is conceivable to adjust the position of the nut 73 on the weight-side rod member 70 by turning the nut 73 with the other hand while preventing the rotation of the weight-side rod member 70 with one hand. However, the workability is poor and the work may take a long time.

  In the embodiment, in order to prevent such inconvenience, the main rope rod rotation preventing jig 10 shown in FIGS. 3 to 5 is used. Hereinafter, the main rope rod rotation preventing jig 10 is referred to as a rotation preventing jig 10. FIG. 3 is a perspective view of the rotation preventing jig 10. FIG. 4 is a view of the rotation preventing jig 10 as viewed from above. FIG. 5 is a front view of the rotation preventing jig 10. FIG. 6 is a view showing the shaft section 20 and the U-shaped section 11 separately in FIG.

  The rotation preventing jig 10 is used for adjusting the tension of each of the main ropes 50 at a connection portion between the plurality of main ropes 50 and the counterweight 60. The rotation preventing jig 10 includes a U-shaped part 11, a shaft part 20, and two bolts 25. The U-shaped portion 11 fits outside the weight-side rod member 70 connected to the end of the main rope 50. Specifically, the U-shaped part 11 has a base part 12 and two substantially parallel arms 16 and is formed in a U-shape. The base portion 12 includes a connecting plate portion 13 connected between the two arm portions 16 and one side in the width direction at the middle portion in the longitudinal direction of the connecting plate portion 13 (the front side of the paper in FIGS. 3 and 4; And a shaft fixing portion 15. The shaft fixing portion 15 is formed so as to protrude from one side surface (the right side surface in FIGS. 4 and 5) of the protruding plate portion 14. The shaft fixing portion 15 has a screw hole (not shown) formed on a front end surface (the right side surface in FIGS. 3 to 5). For example, the shaft fixing portion 15 is formed by fixing a nut to one side surface of the protruding plate portion 14 by welding. The shaft fixing portion 15 fixes an end of a shaft portion 20 described later by screw connection.

  The two arm portions 16 are coupled at both ends of the connecting plate portion 13 so as to protrude in the same direction (the left direction in FIGS. 3 to 5) opposite to the shaft fixing portion 15. Each of the arms 16 has a substantially triangular cross section, and becomes narrower toward the tip. A screw hole 17 for screwing a bolt 25 to be described later is formed in a longitudinally intermediate portion of each arm 16. The distance between the two arms 16 is greater than the entire length of the connection pin 75 (FIG. 2) of the weight-side rod member 70 connected to the main rope 50. Thereby, the weight side rod member 70 can be arranged inside the two arm portions 16. The screw holes 17 formed in the two arms 16 are arranged in a straight line. Therefore, in a state where the bolt 25 is screwed into each screw hole 17, the tip of the bolt 25 faces. As shown in FIG. 2, the tips of the bolts 25 project from the inside of each arm 16 of the rotation preventing jig 10, and those tips can abut the center of the end face of the connection pin 75 of the weight-side rod member 70. It is.

  As shown in FIGS. 3 to 6, the shaft portion 20 of the rotation preventing jig 10 is fixed to the base portion 12 so as to protrude in the direction opposite to the arm portion 16. Specifically, the shaft portion 20 has a columnar shape extending linearly or a cylindrical shape having one end (the left end in FIGS. 3 to 6) closed. Then, as shown in FIG. 7, a male screw portion 21 protruding in the axial direction is formed on one end surface of the shaft portion 20. Then, by screwing the external thread portion 21 to the shaft fixing portion 15 of the U-shaped portion 11, the shaft portion 20 is separably fixed to the U-shaped portion 11 by screw connection. In this state, the shaft portion 20 protrudes from the base portion 12 in a direction opposite to the arm portion 16. The U-shaped part 11 and the shaft part 20 are formed of a metal such as iron, for example.

  The two bolts 25 are coupled to each of the two arms 16 so as to be screwed in from the outside, and the tips of the two bolts 25 protrude toward the weight-side rod member 70 that is inside the two arms 16. I have. Then, the distal end of each bolt 25 is screwed into the corresponding arm 16 so as to protrude toward the weight-side rod member 70, so that the end face of the connection pin 75 (FIG. 2) of the weight-side rod member 70 can be abutted. And

  FIG. 7 shows a state in which the rotation preventing jig 10 is fixed to one of the weight-side rod members 70 connected to the upper part of the counterweight 60 (FIG. 1), It is a figure which shows the operation | work which performs the rotation stop of 70 in order of process.

  As shown in FIG. 7A, a plurality of weight-side rod members 70 protrude upward in a dense state above the counterweight 60, and a rope-side rod member 51 connected to the main rope is connected to each. Have been. Then, as shown in FIG. 7B, the U-shaped part 11 of the rotation preventing jig 10 is separated from the shaft part 20 at the upper end of one weight-side rod member 70 to be prevented from rotating. The connection is fixed. Specifically, the U-shaped portion 11 is provided so as to surround a connection pin 75 provided at the upper end of one weight-side rod member 70 and protruding laterally from the tip of the rope-side rod member 51. Then, in this state, a bolt 25 is screwed into each arm 16 of the U-shaped part 11, and the tip of the bolt 25 protruding inward from each arm 16 abuts against both end surfaces of the connection pin 75, and The bolt 25 sandwiches the connection pin 75 from both sides. Thereby, the U-shaped part 11 is fixed to the weight side rod member 70.

  Next, as shown in FIG. 7C, the shaft portion 20 is screwed to the U-shaped portion 11, whereby the U-shaped portion 11 and the shaft portion 20 are fixed. In this state, the shaft portion 20 is disposed between the plurality of weight side rod members 70 or the rope side rod members 51 connected to the ends of the other plurality of main ropes 50 and extends in the lateral direction. Thereby, the shaft portion 20 comes into contact with the rope-side rod member 51 connected to another main rope or the weight-side rod member 70 connected to the rope-side rod member 51, or faces through a gap. ing.

  As described above, the rotation-preventing jig 10 is screwed into the arm 16 so that the tip of the bolt 25 projects toward the weight-side rod member 70, and is brought into contact with the weight-side rod member 70. The member 70 can hold the rotation preventing jig 10. Then, in this state, the shaft portion 20 of the rotation preventing jig 10 is engaged with the rope side rod member 51 connected to another main rope 50 or the weight side rod member 70 connected to this rope side rod member 51. . Thereby, the rotation of the weight side rod member 70 and the main rope 50 to which the rotation preventing jig 10 is fixed can be prevented. At this time, there is no need to insert a jig into the weight-side rod member 70 or to screw-engage the jig with the threaded portion of the weight-side rod member 70. The rotation preventing jig 10 may be disposed so as to be able to engage with the surrounding rope side rod member 51 connected to the main rope 50 by inclining the shaft portion 20 with respect to the horizontal direction.

  As a comparative example different from this example, a method of holding one weight-side rod member 70 with a spanner when adjusting the position of the nut 73 of the weight-side rod member 70 is also conceivable. According to this method, in the wrench, the gripping portion opposite to the holding portion faces the other weight side rod member 70 so as to be engageable. However, in this case, since a relatively large gap is generated between the sandwiched portion of the spanner and the weight side rod member 70, it is difficult to fix the spanner to the weight side rod member 70 with sufficient fixing strength. In addition, since the fixing is not an original function of the spanner, it is not suitable for the fixing operation and causes a damage to the spanner. In the embodiment, such inconvenience can be prevented.

  Further, in the embodiment, since the shaft portion 20 is fixed to the U-shaped portion 11 so as to be separable by screw connection, the U-shaped portion 11 is connected to the shaft portion 20 as shown in FIG. Can be separated and fixed to the weight side rod member 70. After that, the shaft portion 20 can be fixed to the U-shaped portion 11. Accordingly, even when the entire rotation preventing jig 10 cannot be inserted from the outside or is difficult to be inserted between the plurality of weight side rod members 70, only the U-shaped portion 11 is first inserted between the plurality of weight side rod members 70. Can be easily arranged. For example, the plurality of weight-side rod members 70 are densely spaced at small intervals, and when the shaft portion 20 and the U-shaped portion 11 are integrated, the rotation preventing jig 10 is moved to the plurality of weight-side rod members 70. It may not be possible to place them between them. In this case, the U-shaped part 11 is fixed to the weight side rod member 70 first. After that, only the shaft portion 20 is easily inserted between the plurality of weight-side rod members 70 from one side in the lateral direction (the left side in FIG. 7C) or the like, and the shaft portion 20 is coupled to the U-shaped portion 11. can do. Thereby, the workability of the fixing work of the rotation preventing jig 10 can be improved.

  Further, the two bolts 25 are coupled so as to be screwed into each of the two arm portions 16, and the tip portions of the two bolts 25 project toward the weight-side rod member 70 of the two arm portions 16. Thereby, fine adjustment when fixing the rotation preventing jig 10 to the weight side rod member 70 can be easily performed. For example, the amount of protrusion of the bolt 25 from the inside of the two arms 16 can be changed between the two bolts 25.

  FIG. 8 is a diagram illustrating a cap 30 that constitutes the rotation preventing jig 10 according to another example of the embodiment. FIG. 9 is a cross-sectional view showing a state in which the cap 30 is fitted to the end of the connection pin 75 of the weight-side rod member 70 and the tip of the bolt 25 of the rotation preventing jig 10 abuts against the end face of the connection pin 75. FIG. FIG. 10 is a view of FIG. 9 as viewed from above.

  In the configuration of another example shown in FIGS. 8 to 10, when fixing the rotation preventing jig 10 to the weight side rod member 70, the cap 30 is fitted to the tip of the bolt 25 of the rotation preventing jig 10. . As shown in FIG. 8, the cap 30 has a substantially box shape with one end of a rectangular parallelepiped opened, and a notch 33 is formed at an opening end of two facing plate portions 32 forming the peripheral wall portion 31. FIG. 8 shows a cutout 33 formed in one (upper side in FIG. 8) plate portion 32 of the two facing plate portions 32. With the rotation preventing jig 10 fixed to the weight side rod member 70, an end of a split pin 76 (FIGS. 9 and 10) protruding from the connection pin 75 is arranged inside the notch 33. In FIG. 8, the notch 33 is semicircular, but may have another shape such as a rectangle. Further, a through hole 35 is formed in the center of the bottom plate portion 34 forming the cap 30. The diameter of the through hole 35 is substantially the same as the outer diameter of the thread portion of the bolt 25 of the rotation preventing jig 10.

  As shown in FIGS. 9 and 10, when fixing the rotation-preventing jig 10 to the weight-side rod member 70, a cap is attached to the tip of a bolt 25 projecting inward from each arm 16 of the rotation-preventing jig 10. 30 is fitted. At this time, the end of the split pin 76 inserted into the connection pin 75 passes through the inside of the notch 33 of the cap 30 to prevent interference with the cap 30. The tip of the bolt 25 is inserted from the outside of the bottom plate portion 34 into the inside of the cap 30 through the through hole 35. Then, the peripheral wall 31 of the cap 30 is fitted to the end of the cylindrical connection pin 75 of the weight-side rod member 70. In this state, the distance D (FIG. 9) between the two plate portions 32 having the cutouts 33 is substantially the same as the outer diameter of the end of the connection pin 75. Accordingly, the cap 30 is prevented from moving in the diametrical direction with respect to the end of the connection pin 75. Then, the tip of the bolt 25 protruding inside the cap 30 can be easily butted against substantially the center of the end face of the connection pin 75. For this reason, the rotation prevention jig 10 can be easily and stably fixed to the weight side rod member 70 by abutting the tips of the bolts 25 to the centers of both ends in the axial direction of the connection pins 75 and tightening them. . Other configurations and operations are the same as those in the configurations of FIGS. 1 to 7.

  FIG. 11 is a view corresponding to FIG. 9, showing a state in which another example of the cap 30 is fitted to the end of the connection pin 75 of the weight side rod member 70. The rotation preventing jig 10 shown in FIG. 11 includes a coil spring 36 disposed between the bottom plate portion 34 of the cap 30 and the arm portion 16 around the bolt 25 in the configuration shown in FIGS. Then, a repulsive force due to the contraction of the coil spring 36 is applied to the bottom plate portion 34 and the arm portion 16.

  According to the above configuration, the coil spring 36 can suppress the cap 30 from being shifted with respect to the arm 16 in a rotational direction or the like about the center axis of the connection pin 75. Thus, the tip of the bolt 25 can be more easily brought into contact with the approximate center of the end face of the connection pin 75. Other configurations and operations are the same as the configurations in FIGS. 8 to 10.

  In the configuration of each example described above, the configuration in which the bolt 25 is screwed into both of the two arms 16 of the rotation preventing jig 10 has been described, but the configuration in which the bolt 25 is screwed into only one arm 16 may be used. Good. At this time, the weight-side rod member 70 is sandwiched between the tip portion of the bolt 25 and the other arm portion 16 to which the bolt 25 is not screwed, and the rotation preventing jig 10 can be fixed to the weight-side rod member 70. . At this time, the shaft portion 20 of the rotation preventing jig 10 may be fixed to the U-shaped portion 11 in a state where the shaft portion 20 is biased to one side of the two arms 16, for example, the side of the arm 16 into which the bolt 25 is screwed. .

  In the above description, the case where the rotation preventing jig 10 is fixed to the weight side rod member 70 has been described, but the rotation preventing jig may be fixed to the rope side rod member 51.

  Reference Signs List 10 Main rope rod rotation prevention jig (rotation prevention jig), 11 U-shaped part, 12 base part, 13 connecting plate part, 14 projecting plate part, 15 shaft fixing part, 16 arm part, 17 screw hole, 20 shaft part , 21 male thread, 25 bolt, 30 cap, 31 peripheral wall, 32 plate, 33 notch, 34 bottom plate, 35 through hole, 36 coil spring, 40 elevator, 41 hoistway, 42 counter rail, 50 main rope, 51 Rope side rod member, 52 arms, 60 counterweight, 61 frame, 61a upper end plate, 62 weight, 63 guide shoe, 70 weight side rod member, 70a head, 71 rod body, 72 male thread, 73 nut , 75 connection pins, 76 split pins.

Claims (3)

A main rope rod rotation preventing jig used for adjusting tension of the main rope at a connection portion between a plurality of main ropes and a counter weight of an elevator,
A U-shaped portion fitted to the outside of a rod member connected to the counterweight side end portion of the main rope, the U-shaped portion including a base portion and two arms coupled to both ends of the base portion; A shaft portion fixed to the base portion so as to protrude in a direction opposite to the arm portion, and a bolt coupled to the arm portion of at least one of the two arm portions,
In the one arm portion, the distal end of the bolt is screwed so as to protrude toward the rod member, and is configured to be able to abut against the rod member ,
The shank, that are detachably fixed by a screw attached to said base portion,
Main rope rod rotation prevention jig. The jig for preventing rotation of the main rope rod according to claim 1,
In a state where the tip of the bolt is abutted against the rod member, the shaft portion is engaged with a rod member connected to the counterweight side end of another main rope of the plurality of main ropes. A main rope rod rotation prevention jig that faces through a contact or gap if possible. In the main rope rod rotation preventing jig according to claim 1 or 2 ,
The bolts are two bolts screwed into each of the two arms,
A main rope rod rotation preventing jig, wherein tips of the two bolts protrude toward the rod member of the two arms.

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