JP5447885B2 - Elevator equipment - Google Patents

Description

  The present invention relates to an elevator apparatus including a main rope detent mechanism that prevents twisting of a main rope that suspends a passenger car and a counterweight and ensures stable operation of the elevator.

  An elevator apparatus equipped with a cage and a counterweight suspended from a main rope (rope) wound around a traction sheep in a hoistway, wherein the traction sheep is driven by an electric motor and the vehicle and the counterweight are It is configured to move up and down in the opposite direction. For example, as shown in FIG. 6, the end portion of the main rope 1 is connected to the wedge-type connecting portion 2 a of the shackle rod 2 by folding back the end portion. The shackle rod 2 is attached via an elastic body (for example, a coil spring) 4 to a suspension part 3 provided on the building, the car or the counterweight forming the hoistway. In addition, the elastic body 4 plays the role which adjusts the tension | tensile_strength added to the main rope 1 by adjusting the attachment position of the shackle rod 4 to the suspension part 3 to an axial direction (refer patent document 1, 2).

JP 2011-42481A Special table 2003-520171 gazette

  By the way, as shown in FIG. 7, the main rope 1 is formed by twisting a plurality of strand wires 1b obtained by twisting and bundling a plurality of steel wires (element wires) 1a. For this reason, when a tension acts on the main rope 1, a rotating force is generated in a direction in which the twist can be unwound, and a rotational force is applied to the shackle rod 2 connected to the end of the main rope 1 and attached to the suspension portion 3. When the shackle rod 2 rotates, the main rope 1 is gradually unraveled.

  Conventionally, as means for preventing the rotation of the main rope 1, between the connecting portions 2a of the plurality of shackle rods 2 respectively attached to the ends of the plurality of main ropes 1 laid in parallel as illustrated in FIG. It is considered that the wire body 6 is passed through a hole (not shown) drilled in the distal end portion of the shackle rod 2 and the rotation is mutually restricted. However, in the former case, it is necessary that the shackle rods 2 are respectively arranged in a straight line, and in the latter case, the processing cannot be performed unless the heights of the holes through which the wire 6 passes are uniform. was there. However, since the shackle rod 2 is adjusted by moving it up and down so that the tension between the main ropes 1 becomes equal, the position of the shackle rod 2 in the height direction often varies, and these are aligned. It is difficult.

  The present invention has been made in view of such circumstances, and its purpose is to have a simple configuration that can effectively prevent the rotation of the shackle rod, and thus the twisting of the main rope, and ensure stable operation of the elevator. An object of the present invention is to provide an elevator apparatus having a main rope detent mechanism.

In order to achieve the above-described object, an elevator apparatus according to the present invention includes a car that is lifted and lowered by a plurality of main ropes in a hoistway, and is suspended from the main rope in the hoistway. A counterweight that moves up and down in the opposite direction to the car, an electric motor that drives the traction sheep on which the main rope is hung and drives the cage and the counterweight, and an end folding portion of each main rope at one end A plurality of shackle rods having a connecting part to be connected and having the other end fixed to a suspension part provided at an upper end part of the hoistway, and sandwiching them between end turns of the plurality of main ropes A rotation prevention mechanism comprising at least a pair of fixed plates arranged opposite to each other, and at least one inner surface of the pair of opposite arrangement fixed plates of the rotation prevention mechanism are fitted with end folding portions of the main ropes. Combine Comprising a plurality of recesses urchin formed, wherein the formation by each main ropes will by twisting a plurality of strands lines, the oppositely disposed recesses formed in the inner surface of at least one of the pair of fixing plates The hole portion through which the end turn portion of the main rope passes has a cross-sectional shape across the main rope having a width approximately twice the diameter of the main rope and a height smaller than the diameter of the main rope. It has an elliptical shape and a rectangular shape .

Moreover, in the elevator apparatus according to the present invention, the plurality of hole portions are arranged in a row or over a plurality of rows at a predetermined interval.

  According to the above configuration, even if the height positions of the plurality of shackle rods attached to the suspension portion are not aligned, the fixing plate having the above configuration is used to turn the main rope main body portion and the main rope from the shackle rod. The shackle rod can be prevented from rotating by being attached to the portion where the portion overlaps, and thereby, twisting (twisting back) of the main rope can be easily and effectively prevented.

1 is a perspective view showing an overall configuration of an elevator apparatus according to an embodiment of the present invention. The schematic diagram which shows schematic structure of the elevator apparatus shown in FIG. The figure which shows the mode of the suspension part of the main rope including the rotation prevention mechanism of the main rope integrated in the elevator apparatus shown in FIG. The top view which shows the detent mechanism of the main rope shown in FIG. The figure which shows other embodiment of the rotation prevention mechanism of a main rope. The figure which shows the mode of the suspension part of a conventional general main rope. The figure which shows the structure of a main rope.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram showing the overall configuration of an elevator apparatus. A car 11 is suspended from a main rope 1 and moves up and down in a hoistway. The counterweight 12 is suspended by the main rope 1 and moves up and down in the hoistway in the opposite direction to the car 11. The main rope 1 is wound around a traction sheep 14 driven by an electric motor 13, and a hoisting machine 15 including the traction sheep 14 and the electric motor 13 is provided in an upper part of a building that forms a hoistway. . Specifically, the hoisting machine 15 is provided on a beam 18 that is provided in a hoistway and spans the upper ends of guide rails 16 and 17 that guide the car 11 and the counterweight 12 respectively.

  As shown schematically in FIG. 2, the main rope 1 has a hoistway on one end side through a pair of car lower sheaves 11 a and 11 b provided at the lower part of the car 11. The other end side of the main rope 1 is fixed to a suspension part (hitch part) 19a provided on the upper part of the balance weight 13, and the lifting and lowering is performed via a pair of weight upper sheeps 12a and 12b provided on the upper part of the counterweight 13. It is fixed to a suspension part (hitch part) 19b provided at the upper part of the road. In other words, the car 11 and the counterweight 12 are fixed on both sides of the main rope 1 with both ends fixed to suspension parts (hitch parts) 19a and 19b at the upper part of the hoistway and the intermediate part is wound around the traction sheep 14 respectively. It is suspended and ascends and descends in the hoistway in opposite directions with the rotation of the traction sheep 14.

  The pair of swaying sheeps 20a and 20b bend the travel route of the main rope 1 into an S shape and displace it to the side of the hoisting machine 15 (traction sheep 14) to guide it to the suspension position of the car 11. . In FIG. 1, the car 11 is provided with a car door 11c, and a hold door 21 is provided on the elevator floor to open and close its doorway.

  Fixing to the suspension parts (hitch parts) 19a, 19b provided at the upper part of the hoistway at both ends of the main rope 1 is performed as follows. As shown in FIG. 3, the shackle rod 2 to which the end portion of the main rope 1 is connected includes a round rod-shaped rod portion 2b in which a screw is screwed at one end and a wedge type connection fixed to the other end portion of the rod portion 2b. Part 2a. As for the connection of the shackle rod 2 to the end of the main rope 1, first, the end of the main rope 1 is folded back along the peripheral surface of the wedge-type connection portion 2a, and the folded tip 1a is the main body of the main rope 1. Superimpose on part 1b. In this state, the wire grip 23 is mounted around the two main ropes 1 that are overlapped, and the wire grip 23 is narrowed to fasten and fasten the folded tip 1a and the main body 1b. Thus, the shackle rod 2 is connected to the end of the main rope 1.

  The shackle rod 2 connected to the end portion of the main rope 1 in this way is inserted into the through hole 24 formed in the suspension portion 19a (19b) provided at the upper portion of the hoistway so that the rod portion 2b is suspended. The nut 19 is screwed onto the tip of the rod portion 2b on the back side of the portion 19a (19b) via an elastic body (for example, a coil spring) 4 to be attached to the suspension portion 19a (19b). At this time, the axial attachment position (attachment height) of the shackle rod 2 is adjusted by changing the screwing amount of the nut 25 to the rod portion 2b, and thereby the tension applied to the main rope 1 is adjusted.

  By the way, although the main rope 1 which suspends the passenger car 11 and the counterweight 12 differs depending on the load (tension) applied thereto and the tensile strength of the main rope 1, a plurality of main ropes 1 are generally used in parallel. FIG. 3 shows an example in which three main ropes 1 are arranged side by side in a row, but one more row can be added to the rear of such an arrangement to use a total of six main ropes 1. . The main rope detent mechanism 30 is mounted across the plurality of main ropes 1 at a portion where the main body portion 1b of the main rope 1 and the folded tip end portion 1a of the main rope 1 from the shackle rod 2 overlap. The rotation of each main rope 1 in the hoistway is restrained.

FIG. 4 is a plan view showing a specific structure of the detent mechanism 30. The anti-rotation mechanism 30 has a structure in which, for example, three wooden fixing plates 32 are overlapped and integrated using bolts 33 and nuts 34 at their ends. A plurality of hole portions 31 are formed between a pair of adjacent fixing plates 32. These holes 31 are formed in an oval shape having a lateral width approximately twice the diameter of the main rope 1 and having a vertical width slightly smaller than the diameter of the main rope 1. The plurality of holes 31 are provided at intervals corresponding to the arrangement pitch of the main ropes 1 along the contact surfaces of the pair of fixing plates 31. Incidentally, in the example shown in FIG. 4, the plurality of hole portions 31 are provided three by two over two rows. The hole 31 provided between the pair of fixing plates 32 can be formed by forming a recess on each surface of the adjacent fixing plates 31 and joining these surfaces.

  The shape of the hole 31 may be rectangular as shown in FIG. 5 (a), or as shown in FIG. 5 (b), two adjacent circular border portions are cut out. It may be in the shape of glasses lacking. Further, as shown in FIG. 5C, a U-shaped recess is provided only on one surface of a pair of adjacent fixing plates 32, and the hole 31 is closed by closing the recess with the plane of the other fixing plate 32. It may be formed.

  By mounting the main rope detent mechanism 30 having the above-described structure in the vicinity of the shackle rod 2 across the plurality of main ropes 1 attached to the suspension portions 19a (19b) via the shackle rod 2, The body portion 1b and the folded tip portion 1a of each superimposed main rope 1 are respectively fitted into the hole portions 31 of the fixing plate 32, and are fastened and fixed from the periphery thereof. The rotation force caused by the tension applied to the main rope 1 acts as a force for rotating the fixed plate 32 around the main rope 1 as it is, and the rotation moment is the other main rope to which the fixed plate 32 is attached. Blocked by 1. As a result, the plurality of main ropes 1 mutually act as anti-rotation members for the other main ropes 1 via the anti-rotation mechanism 30, and the main ropes 1 are collectively stopped.

  Therefore, the anti-rotation mechanism 30 having the above-described structure is attached to the main rope 1 provided side by side, particularly in the vicinity of the shackle rod 2 where the main body portion 1b of the main rope 1 and the folded back end portion 1b overlap. The main rope 1 can be easily prevented from rotating. Along with this, the shackle rod 2 can also be prevented from rotating, so that the tension of the main rope 1 adjusted by the shackle rod 2 does not change.

  Moreover, if it is the structure mentioned above, even if the attachment position of the shackle rod 2 attached to the suspension part 19a (19b) differs in the axial direction, the anti-rotation mechanism 30 can be mounted irrespective of the positional deviation in the axial direction. it can. Further, if a plurality of holes 31 are provided over a plurality of rows, the anti-rotation mechanism 30 is mounted across the plurality of main ropes 1 even when the plurality of main ropes 1 are not arranged in a straight line. Is also easy.

  The present invention is not limited to the embodiment described above. For example, the number of the holes 31 provided in the fixing plate 32 of the rotation preventing mechanism 30 and the arrangement interval thereof may be set according to the specifications of the elevator apparatus. In addition, materials other than wood can be appropriately employed as the constituent material of the fixing plate 32. In short, the present invention can be implemented with various modifications without departing from the gist thereof.

DESCRIPTION OF SYMBOLS 1 Main rope 1a Main rope end folding | returning part 1b Main rope main part 2 Shuffle rod 3, 19a, 19b Suspension part 11 Riding car 12 Balance weight 14 Traction sheep 15 Hoisting machine 23 Wire clamp 30 Anti-rotation mechanism 31 Hole 32 Fixed plate

Claims (2)

A riding car suspended and lifted by a plurality of main ropes in the hoistway, a counterweight suspended from the main rope in the hoistway and elevating in the opposite direction to the riding car, and the main rope An electric motor that drives the traction sheaves that are hung up and down to raise and lower the car and the counterweight, and a connecting portion to which an end turn portion of each main rope is connected at one end, and the other end is the hoistway A plurality of shackle rods fixed to a suspension portion provided at an upper end of the main shaft, and at least a pair of fixing plates arranged so as to be opposed to each other at the end folded portions of the plurality of main ropes. comprising a stop mechanism, a plurality of recesses in which the said end folded portion of the main rope on at least one of the inner surface of the oppositely disposed pair of fixing plates are formed so as to fit in the stopping mechanism, the , Each main rope is plural A hole formed by a recess formed on at least one inner surface of the pair of opposingly arranged fixing plates, through which the end folded portion of the main rope passes, An elevator apparatus characterized in that a cross-sectional shape across the main rope is an oval and a rectangle having a width approximately twice the diameter of the main rope and a height smaller than the diameter of the main rope .   The elevator apparatus according to claim 1, wherein the plurality of hole portions are arranged in a row or across a plurality of rows at a predetermined interval.

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