JP6404493B1 - Elevator equipment counterweight and elevator equipment - Google Patents

Abstract

Provided is a counterweight and an elevator apparatus for an elevator apparatus having a counterweight-side compensator mounting structure capable of improving the degree of freedom of the position of the counterweight-side compensator mounting position while ensuring the required strength. .
In the elevator apparatus provided with the compensator chain, the first rising edges 5a, 5b are provided with a portion having a substantially U-shaped cross-section, and the first rising edges 5a, 5b are perpendicular to the counterweight frame 2. The first connection side 5c that connects the first bracket 5 that is fixed to the counterweight frame 2 and the portion having a substantially U-shaped cross section, and the second connection side 6c that connects the second rising sides 6a and 6b is The second rising side 6a, 6b has a second bracket 6 fixed to the first rising side 5a, 5b of the first bracket 5 in the lower direction, and the end of the compensator chain is connected to the second bracket. Is supported by the second connecting side 6c.

Description

  The present invention relates to an elevator apparatus counterweight and an elevator apparatus.

  The elevator apparatus includes a elevator car and a counterweight that are suspended by a main rope in a hoistway formed in a building. For example, as described in Patent Document 1, the elevator apparatus may be provided with a compensation chain in which one end is connected to the lower part of the car, the other end is connected to the lower part of the counterweight, and the intermediate part is folded back in the hoistway. Such a compensator chain functions to correct an unbalance of the rope weight applied to the hoisting machine by raising and lowering the car. Patent Document 1 discloses that a belt-shaped belt having a high bending composition is fastened to a compensator chain so that the minimum curvature radius of the compensator chain can be increased.

JP 2011-1152 A

  By the way, the allowable bending radius is determined for the compensation chain. For this reason, when the compensator chain is attached on the basis of the car side, the attachment position of the compensator chain on the counterweight side may not be provided within the projected area of the counterweight frame. When the mounting position of the compensator chain on the counterweight side is deviated from the projected area of the counterweight frame, the connecting member that connects the compensator chain and the counterweight as the compensator chain mounting position moves away from the counterweight center. The moment load applied to is increased. In an elevator apparatus having a long ascending / descending distance, the compensator chain becomes longer and the compensator chain becomes heavier, so that the moment load applied to the connecting member becomes larger.

  In Patent Document 1, no particular consideration is given to the mounting structure of the compensator chain on the counterweight side.

  An object of the present invention is to provide a counterweight for an elevator apparatus having a counterweight-side compensator mounting structure capable of improving the degree of freedom of the counterweight-side compensator mounting position while ensuring the necessary strength. And providing an elevator apparatus.

  The present invention relates to an elevator apparatus having a compensator chain having one end connected to the lower part of the car, the other end connected to the lower part of the counterweight frame of the counterweight, and an intermediate part folded back in the hoistway. A first connecting edge connecting the first rising edges of the U-shape with a counterweight having a cross-sectional portion in a direction in which the first rising edges of the U-shaped pair are perpendicular to the counterweight frame. A first bracket fixed to the frame, and a portion having a substantially U-shaped cross-sectional shape, with the second connecting side connecting the second rising sides that form a U-shaped pair facing downward; The rising side has a second bracket fixed to the first rising side of the first bracket, and the other end of the compensator chain is supported by the second connecting side of the second bracket.

ADVANTAGE OF THE INVENTION According to this invention, about the attachment structure of the balance weight side compensator chain, it can be made possible to improve the freedom degree of the attachment position of the balance weight side compensator chain, ensuring required intensity | strength. .
Problems, configurations, and effects other than those described above will be clarified by the following description of embodiments.

It is a front view which shows the counterweight of the elevator apparatus which concerns on one Embodiment of this invention. It is sectional drawing of the balance weight lower part shown in FIG. It is a front view of the bracket in the counterweight shown in FIG. 1, and a U-shaped volt | bolt. It is a front view of the 1st bracket in the counterweight shown in FIG. It is a side view of the 1st bracket in the counterweight shown in FIG. It is sectional drawing of the 2nd bracket in the counterweight shown in FIG. It is a side view of the 2nd bracket in the counterweight shown in FIG. It is a reverse view of the 2nd bracket in the counterweight shown in FIG. It is sectional drawing of the counterweight lower part of the elevator apparatus which concerns on other embodiment of this invention. It is a schematic diagram which shows an example of the elevator apparatus with which the counterweight of one Embodiment of this invention is applied.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of a counterweight and an elevator apparatus for an elevator apparatus according to the present invention will be described with reference to FIGS. 1 to 7. In the drawings, the same or similar components are denoted by the same reference numerals, and repeated description is omitted.

  For example, as shown in FIG. 7, the elevator apparatus includes a car 20, a hoisting machine 30, a main rope 50, and a counterweight 1 as main components. A pulley beam 60 is fixed to the lower portion of the car 20, and car lower pulleys 61 and 62 are attached to the pulley beam 60. The hoisting machine 30 is installed at the bottom of the hoistway. A fixed plate 70 is provided near the top of the hoistway, and the ends 91 and 92 of the main rope 50 are connected. Further, turning pulleys 81 and 82 are attached to the fixed plate 70. A pulley 3 is attached to the counterweight 1. One end 91 of the main rope 50 is connected to the fixed plate 70, and the main rope 50 is wound around the sheave of the hoisting machine 30, the turning pulley 81, the lower pulleys 61 and 62, the turning pulley 82, and the pulley 3 in order. Is connected to the fixed plate 70. When the main rope 50 is driven by the hoisting machine 30, the car 20 moves up and down along a car guide rail (not shown), and the counterweight 1 is moved up and down relative to the car 20 up and down. Ascend and descend along (not shown). A compensation chain 40 is provided to correct an unbalance of the rope weight applied to the hoisting machine 30 when the car 20 is moved up and down. One end of the compensator chain 40 is connected to a chain connecting mechanism 41 fixed to a pulley beam 60 (or a compensator chain attaching beam connected to the pulley beam) at the lower part of the car. It is connected to a chain connecting mechanism 4 fixed to. In addition, the structure of an elevator apparatus is not limited to this. The arrangement of each pulley and hoisting machine is appropriately changed according to the specifications of the elevator apparatus.

  Next, the detailed structure of the counterweight 1 of the elevator apparatus which concerns on one Embodiment of this invention is demonstrated using FIGS.

FIG. 1 is a front view showing a counterweight of an elevator apparatus according to an embodiment of the present invention.
The counterweight 1 has a pair of vertical frames 2a and 2b arranged on both sides, a lower frame 2c that connects the lower ends of the vertical frames 2a and 2b, and an upper frame 2d that connects the upper ends of the vertical frames 2a and 2b. A counterweight frame 2, a pulley 3 that is attached to the upper frame 2 d and on which a main rope (not shown) is wound, and a chain coupling mechanism 4 to which a compensation chain (not shown) is attached are provided. A plurality of weights (not shown) are loaded on the counterweight frame 2 according to the weight of the car, and the counterweight frame 2 and the weights constitute a counterweight main body.

  The vertical frames 2a and 2b each have a U-shaped cross-sectional shape when the counterweight is viewed from directly above, and are arranged so that the openings face each other. The upper frame 2d and the lower frame 2c are each provided with a pair of two plate materials, and both ends thereof are fixed to the vertical frames 2a and 2b by bolts.

Next, a structure for securing the required strength and improving the degree of freedom of the mounting position of the compensator side on the counterweight side will be described.
FIG. 2 is a cross-sectional view of the lower part of the counterweight in the present embodiment. FIG. 3 is a front view of the bracket and the U-bolt in the present embodiment. 4A to 4B show the first bracket in the present embodiment, FIG. 4A is a front view, and FIG. 4B is a side view. 5A to 5C show the second bracket in the present embodiment, FIG. 5A is a sectional view, FIG. 5B is a side view, and FIG. 5C is a back view.

  In the present embodiment, the chain coupling mechanism 4 includes a first bracket 5, a second bracket 6, and a U-shaped bolt 7.

  As shown in FIG. 4, the first bracket 5 has a substantially U-shaped cross-sectional shape, and the first rising sides 5a and 5b and the first connecting sides (the first connecting sides 5a and 5b) ( U-shaped base) 5c and first connecting side 5c, through holes 5d and 5e through which mounting bolts 8 are inserted, and first rising sides 5a and 5b through which fixing bolt 9 is inserted. Insertion holes 5f and 5g are provided.

  As shown in FIG. 5, the second bracket 6 has a substantially U-shaped cross-sectional shape, and the second rising edges 6 a and 6 b and the second connecting edges (the second connecting edges (a) connecting these second rising edges 6 a and 6 b ( U-shaped base) 6c and the second connecting side 6c are formed in insertion holes 6d, 6e and 6f through which the U-shaped bolt 7 is inserted, and second rising sides 6a and 6b. Insertion holes 6g and 6h are provided.

  The U-shaped bolt 7 is a U-shaped bolt and is threaded at both ends to form threaded portions 7a and 7b.

  It should be noted that the width dimension of the first bracket 5 (dimension in the rising direction of the first rising side) L1, the formation positions of the insertion holes 5d to 5g, and the width dimension of the second bracket 6 (dimension in the width direction of the second rising side). The formation positions of L2 and the insertion holes 6d to 6h are arbitrarily set according to the installation position of the compensator chain according to the specifications of the elevator.

  1 to 3, the first bracket 5 is oriented so that the first rising sides 5a and 5b are perpendicular to the lower frame 2c, and the first connecting side 5c is a reinforcing member (plate) 10. At the same time, it is fixed to one of the lower frames 2c (the lower frame 2c on the left side in the drawing) by mounting bolts 8. That is, the reinforcing member 10 and the lower frame 2c are formed with insertion holes at positions corresponding to the insertion holes 5d and 5e, respectively. With the first connecting side 5c facing the reinforcing member 10 and the lower frame 2c, the mounting bolt 8 is inserted through the insertion holes 5d and 5e of the first bracket and the insertion holes of the reinforcing member 10 and the lower frame 2c, The nut 11 is screwed to the portion to fix the first bracket 5 to the reinforcing member 10 and the lower frame 2c. As shown in FIG. 2, the reinforcing member 10 has a substantially U-shaped cross-sectional shape and is disposed so as to straddle the lower frame 2 c that is disposed as a pair. In this embodiment, it arrange | positions so that the lower frame 2c arrange | positioned as a pair may be inserted | pinched from the lower side. As described above, one rising portion of the reinforcing member 10 is fixed in a state of being sandwiched between the first bracket and one lower frame 2c, and the other rising portion of the reinforcing member 10 is bolted to the other lower frame 2c. And a nut 11.

  The second bracket 6 has a direction in which the second connecting side 6c is on the lower side (the U-shaped opening is upward), the direction in which the second rising side 6a, 6b rises, and the first rising side 5a, 5b It arrange | positions so that the rising direction may be orthogonal. In the present embodiment, the distance between the insides of the second rising sides 6a and 6b of the second bracket is substantially equal to the distance between the outsides of the first rising sides 5a and 5b of the first bracket. Although the reverse relationship may be used, the former is more preferable in consideration of the installation space of the U-shaped bolt 7 on the second connecting side 6c. The first rising edges 5 a and 5 b and the second rising edges 6 a and 6 b of the second bracket are fixed by fixing bolts 9 and nuts 12. That is, the first rising edge 5a of the first bracket 5 and the second rising edge 6a of the second bracket 6 are opposed to each other, the fixing bolt 9 is inserted with the insertion hole 5f and the insertion hole 6g being combined, and the nut 12 is inserted. The first rising side 5a and the second rising side 6a are fixed by screwing to the fixing bolt 9. Further, the first rising edge 5b of the first bracket 5 and the second rising edge 6b of the second bracket 6 are opposed to each other, the fixing bolt 9 is inserted in a state where the insertion hole 5g and the insertion hole 6h are aligned, and the nut 12 is inserted. The first rising side 5b and the second rising side 6b are fixed by screwing to the fixing bolt 9.

  Further, the U-shaped bolt 7 is fixed to the second connecting side 6 c of the second bracket 6. That is, both ends of the U-shaped bolt 7 are inserted into insertion holes 6d and 6e formed in the connecting side 6c, and in this state, the nut 13 is screwed into the screw portions 7a and 7b, and the U-shaped bolt 7 is connected to the second connection. Fix to side 6c. The U-bolt 7 is attached with the other end of a compensation chain (not shown).

  In this embodiment, two brackets 5 and 6 having a substantially U-shaped cross-sectional shape are combined so that the first bracket 5 is attached to the counterweight frame 2 and the second bracket 6 is compensator. The support side of the chain. And since the 1st bracket 5 which receives a moment load when hanging a Compensation chain is arranged in the lengthwise direction which can ensure a high section modulus, while constructing the chain connection mechanism 4 with high strength while being compact Can do.

  When the mounting position of the compensator chain on the counterweight side must be a part that is out of the projected area of the counterweight frame, the conventional compensator chain mounting structure welds a reinforcing member to increase the strength. However, the welded structure has a problem that the fatigue limit is low with respect to repeated loads. In this embodiment, since the two brackets are fastened by fastening means such as bolts, the chain coupling mechanism 4 having higher strength than the welded structure can be constructed.

  The first bracket 5 is fastened to the lower frame 2c by mounting bolts 8 and nuts 11, and the second bracket 6 is fixed to the first rising edges 5a and 5b of the first bracket 5 by fixing bolts 9 and nuts 12. It is concluded. Therefore, the load of the compensator chain is generated on the opposing surfaces of the lower frame 2c and the reinforcing member 10 by bolt fastening, the reinforcing member 10 and the first connecting side 5c, the first rising sides 5a and 5b, and the second rising sides 6a and 6b. Therefore, the chain connection mechanism 4 having excellent robustness can be obtained by suppressing the application of shear stress to the bolts 8 and 9.

  In addition, when the compensator chain is attached on the basis of the car side, it is possible to easily cope with the compensator mounting position on the counterweight side that must be a part that is out of the projected area of the counterweight frame 2.

  Also, assuming that the compensator chain is installed at a predetermined position under the car, the gap size between the car and the counterweight varies depending on the car specifications, so that the allowable bending radius is maintained. Therefore, it is necessary to change the mounting position of the compensator chain on the counterweight side according to the specifications. According to this embodiment, the width dimension L1 of the first bracket 5 and the formation positions of the insertion holes 5d to 5g, and the width dimension L2 of the second bracket 6 and the formation positions of the insertion holes 6d to 6h are changed. The mounting position of the compensator chain on the counterweight 1 side can be easily changed according to the specifications.

  As described above, in the present embodiment, the first rising edges 5a and 5b are connected to each other in a direction in which the first rising edges 5a and 5b that are paired have a substantially U-shaped cross-sectional shape and are perpendicular to each other. The first connecting side 5c is fixed to the counterweight frame 2 and the second connecting side 6c having a substantially U-shaped cross-section and connecting the paired second rising sides 6a, 6b is the bottom. The second rising side 6a, 6b is provided with a second bracket 6 fixed to the first rising side 5a, 5b, and the other end of the compensator chain is supported by the second connecting side 6c. Therefore, the required strength can be ensured and the mounting position of the compensator chain on the counterweight side can be easily changed. This makes it possible to support elevator equipment of all specifications without changing the mounting structure of the compensator chain on the counterweight side, increasing the versatility of the counterweight and reducing the weight of the counterweight by sharing parts, and thus the elevator. The cost of the apparatus can be reduced.

Next, another embodiment of the present invention will be described with reference to FIG. FIG. 6 is a cross-sectional view of a lower part of a counterweight of an elevator apparatus according to another embodiment of the present invention.
The embodiment shown in FIG. 6 corresponds to an elevator apparatus having a specification in which the mounting position of the compensator chain is slightly closer to the counterweight core than in the embodiment described above and is directly below the vertical surface of the lower frame 2c. is there.

  As described above, when the mounting position of the compensator chain is just below the vertical surface of the lower frame 2c, the U-shaped bolt 7 is rotated 90 degrees from the state shown in the above-described embodiment, and one screw portion 7a is moved to the second position. While fixing using the insertion hole 6f formed in the 2nd connection edge 6c of the bracket 6, the other screw part 7b is fixed using the insertion hole 10a formed in the reinforcement member 10. FIG. That is, one screw portion 7a of the U-shaped bolt 7 is inserted into the insertion hole 6f, and in this state, the nut 13 is screwed and fixed to the screw portion 7a, and the other screw portion 7b is inserted into the reinforcing member 10. The nut 13 is inserted into the hole 10a, and in this state, the nut 13 is screwed and fixed to the screw portion 7b.

  In this way, the structure for connecting the compensator chain is configured by combining two brackets, so that the mounting position of the U-bolt can be freely changed without basically changing the compensator mounting structure on the counterweight side. The degree has improved. That is, two insertion holes formed in the second connection side of the second bracket and two insertion holes formed in the reinforcing member (plate) are selected as the insertion holes through which the threaded portion of the U-bolt is inserted. Therefore, it can correspond to the specifications of various elevator devices. And by setting it as the structure like this embodiment, it can respond easily to the elevator apparatus of the specification from which the attachment position of a compensation chain is right under the vertical surface of the lower frame 2c.

  In addition, this invention is not limited to an above-described Example, Various modifications are included. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described. Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. Moreover, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

  For example, although the U-shaped bolt is used in the above-described embodiment, a mounting pin as described in JP-A-8-188355 can be used instead of the U-shaped bolt. For example, mounting pin insertion holes are formed in the second rising edges 6a and 6b, and mounting pins formed with screws at least once are inserted into these insertion holes and fixed with nuts. Then, one end of the compensation chain is connected to the mounting pin. Also in this case, the first bracket that receives the moment load when the compensator chain is suspended is arranged in the vertical direction that can secure a high section modulus, so that a high-strength chain coupling mechanism is constructed while being compact. be able to. However, in this case, since it is difficult to realize the attachment position of the compensation chain as in the embodiment shown in FIG. 6, it can be said that it is a desirable embodiment to use a U-bolt. When mounting pins are used, the second bracket is omitted, mounting holes for the mounting pins are formed in the first rising sides 5a and 5b of the first bracket, the mounting pins are inserted through these insertion holes, and bolts And fixing with a nut.

  Moreover, in the above-mentioned embodiment, although the 1st bracket is made into the U-shape by one member, for example, even if it makes a cross-section substantially U-shape by the combination of the L-shape and the reverse L-shape separately, the above-mentioned The same effect as the embodiment can be expected. However, since it is necessary to consider the alignment of the two members and the strength, it is desirable to form the first bracket with one member.

  Moreover, in the above-mentioned embodiment, although the 1st bracket and the 2nd bracket are made into the U-shape, it can also consider making it into O-shape, for example. That is, if a U-shaped portion exists, the same effect as that of the above-described embodiment can be expected. However, considering workability and the like, it is desirable to use a bracket having a substantially U-shaped cross section.

  DESCRIPTION OF SYMBOLS 1 ... Counterweight, 2 ... Counterweight frame, 2a, 2b ... Vertical frame, 2c ... Lower frame, 2d ... Upper frame, 3 ... Pulley, 4 ... Chain connection mechanism, 5 ... First bracket, 5a, 5b ... First Rising edge, 5c ... first connecting edge, 6 ... second bracket, 6a, 6b ... second rising edge, 6c ... second connecting edge, 7 ... U-bolt, 8 ... mounting bolt, 9 ... fixing bolt, 10 ... Reinforcing member, 11, 12, 13 ... nut

Claims (5)

An elevator apparatus comprising a carriage, a counterweight, a hoisting machine, and a main rope, wherein the main rope is driven by the hoisting machine to raise and lower the counterweight and the counterweight relatively. In the elevator apparatus comprising a compensator chain, the lower part of the car, the other end is connected to the lower part of the counterweight frame of the counterweight, and the intermediate part is folded back in the hoistway.
A section having a substantially U-shaped cross-sectional shape is provided, and the first rising edges of the U-shaped pair are connected to the counterweight frame so that the first rising edges of the U-shaped are connected to each other. A first bracket having a first connecting side fixed to the counterweight frame;
A portion having a substantially U-shaped cross-sectional shape, a second connecting side connecting the second rising sides that form a U-shaped pair is directed downward, and the second rising side is formed on the first bracket. A second bracket fixed to the first rising side,
The elevator apparatus, wherein the other end of the compensation chain is supported by the second connection side of the second bracket. The elevator apparatus according to claim 1,
The other end of the compensation chain is supported by the second connection side of the second bracket via a U-bolt,
The elevator apparatus according to claim 1, wherein at least one screw portion of the U-bolt is fixed to the second connection side of the second bracket. The elevator apparatus according to claim 2,
A plurality of insertion holes through which the threaded portion of the U-shaped bolt is inserted are formed in the second connection side of the second bracket,
The elevator apparatus, wherein an insertion hole through which the threaded portion of the U-bolt is inserted is selected according to the specifications of the elevator apparatus. The elevator apparatus according to claim 3,
A reinforcing plate arranged and fixed so as to straddle the lower frame arranged as a pair of the counterweight frames;
The reinforcing plate is formed with an insertion hole through which the threaded portion of the U-bolt is inserted,
Depending on the specifications of the elevator apparatus, the insertion hole into which the threaded portion of the U-bolt is inserted has a plurality of insertion holes formed in the second connection side of the second bracket and an insertion formed in the reinforcing plate. An elevator apparatus characterized in that two are selected from the holes. It is a counterweight of the elevator device,
A compensator chain fixed to the lower frame and a counterweight frame having a pair of vertical frames arranged on both sides, a lower frame connecting the lower ends of the vertical frames, and an upper frame connecting the upper ends of the vertical frames A chain connecting mechanism to which
The chain coupling mechanism is
A first U-shaped pair of U-shaped cross-sections, the first rising edges of the U-shaped pairs being perpendicular to the lower frame, and connecting the first rising edges of the U-shaped A first bracket having one connecting side fixed to the lower frame;
A portion having a substantially U-shaped cross-sectional shape, a second connecting side connecting the second rising sides that form a U-shaped pair is directed downward, and the second rising side is formed on the first bracket. A second bracket fixed to the first rising edge;
The counterweight of an elevator apparatus, comprising: a U-bolt connected to the compensation chain and fixed to the second connection side of the second bracket.

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