JP2010023972A - Elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent imbalance between a weight on a car side and a weight on a counterweight side occurring along with elevation of car, without using a compensation rope. <P>SOLUTION: The elevator includes: the car 5 elevating in a hoistway 1; the counterweight 6 elevating by responding to the elevation of the car 5, through a main rope 4; a split-type weight placing plate 8 disposed to the counterweight 6; a split-type weight 9 put on the split-type weight placing plate 8; and a split-type weight support part 12 disposed in the hoistway 1 in which the car elevates, and supporting the split-type weight 9. The split-type weight support part 12 takes the split-type weight 9 down from the split-type weight placing part 8 and supporting the split-type weight 9 when the split-type weight 9 put on the split-type weight placing part 8 moves down together with the counterweight 6, and putting the split-type weight 9 supported thereby on the split-type weight placing part 8 when the counterweight 6 moves up. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an elevator, and more particularly, to a traction type elevator.

  In a traction type elevator, a main rope is wound around a drive sheave that is rotationally driven by a hoisting machine, a car is connected to one end of the main rope, and a counterweight is connected to the other end of the main rope.

  As shown in the following Patent Document 1, such a traction type elevator includes a compen- sion rope having one end connected to the lower part of the car and the other end connected to the lower part of the counterweight.

When the car goes up and down, the main rope moves back and forth between the car side with the drive sheave sandwiched and the counterweight side, and the weight of the main rope acting on the car side with the drive sheave sandwiched and the counterweight side fluctuates. To do. The compensating rope compensates for the weight fluctuation caused by the moved main rope, prevents the weight balance between the car side and the counterweight side, and minimizes the load fluctuation acting on the hoisting machine.
JP 2007-176627 A

  However, as the lift distance of the elevator becomes longer, the compen- sion rope becomes longer, and the compen- sion rope swings when the car is raised or lowered or when an earthquake occurs.

  The present invention has been made to solve such problems. The purpose of the present invention is to use the weight on the side of the car and the weight on the side of the counterweight that are generated when the car is raised and lowered without using a compen- sion rope. It is an object to provide an elevator that can prevent unbalance.

  A first feature according to an embodiment of the present invention is that, in an elevator, a car that moves up and down in a hoistway, a balance weight that moves up and down via a main rope corresponding to the lift of the car, and the balance weight A provided split weight, a split weight placed on the split weight, and a split weight support provided in a hoistway for raising and lowering the car and supporting the split weight; The split-type weight support part is configured to lower the split-type weight from the split-type weight support part when the split-type weight placed on the split-type weight support part is lowered together with the counterweight. Then, when the counterweight is raised, the split weight supported by the counterweight is placed on the split weight placing portion.

  According to a second feature of the present invention, in the elevator, the elevator car is moved up and down in the hoistway, the counterweight is raised and lowered via a main rope corresponding to the raising and lowering of the car, and the car A provided split weight, a split weight placed on the split weight, and a split weight support provided in a hoistway for raising and lowering the car and supporting the split weight; The split-type weight support part supports the split-type weight lowered from the split-type weight support part when the split-type weight placed on the split-type weight support part descends together with the car. And when the said car raises, it is mounting the said division | segmentation type weight supported on the said division | segmentation type weight mounting part.

  According to the present invention, it is possible to prevent unbalance between the weight on the side of the car and the weight on the side of the counterweight, which is generated when the car is raised and lowered, without using a compen- sion rope.

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

(First embodiment)
The elevator according to the first embodiment of the present invention has a hoistway 1 and a machine room (not shown) provided on the upper part of the hoistway 1, and a hoisting machine (not shown) is provided in the machine room. A drive sheave 2 that is connected to a hoisting machine and is rotationally driven, and a deflecting sheave 3 are disposed. A main rope 4 is wound around the driving sheave 2 and the deflecting sheave 3, a car 5 is connected to one end of the main rope 4, and a counterweight 6 is connected to the other end of the main rope 4. The car 5 moves up and down in the hoistway 1 when the hoisting machine is driven, and the counterweight 6 moves up and down in the opposite direction to the car 5 in response to the raising and lowering of the car 5. The counterweight 6 is guided so as to be movable in the vertical direction by a counterweight rail 7 disposed in the hoistway 1 so as to extend in the vertical direction.

  The counterweight 6 is provided with a split weight portion 8 that protrudes laterally from the counterweight 6, and a split weight 9 is placed on the split weight portion 8. FIG. 1 shows a case where the split weight 9 is not placed on the split weight 8 and FIG. 2 shows a case where one split weight 9 is placed on the split weight 8. FIG. 3 shows a case where three split weights 9 are placed on the split weight rest 8.

  The split weight 9 includes a base 9a positioned above the split weight 8 when placed on the split weight 8 and a pair of legs extending at an angle of 90 ° from both ends of the base 9a. It is formed in a U-shape consisting of 9b. In each of the split weights 9, the length of the leg 9b is different. Specifically, the leg 9b of the split weight 9 positioned on the upper side when loaded on the split weight 8 is the longest, The split weight 9 located on the side is formed shorter. Holes 10 are respectively formed on the distal ends of the leg portions 9b.

  A plurality of split weight support portions 12 are attached to the wall portion 11 of the hoistway 1 along the vertical direction. The split weight support portion 12 is formed with a bent portion 12a bent upward, and the bent portion 12a is configured to support the split weight 9 by engaging with the hole 10 of the split weight 9. .

  The plurality of split weight support portions 12 arranged along the vertical direction have different length dimensions from the wall portion 11 to the bent portion 12a, and the length dimensions thereof are the lower split weight support portions. 12 is the longest, and is formed so as to be shorter as the divided weight support portion 12 located on the upper side.

  Therefore, from the relationship between the length dimension of the leg portion 9b of each split weight 9 and the length dimension of each split weight support section 12, as shown in FIG. The split-type weight 9 is supported, the middle-partition-type weight support part 12 supports the middle-partition-type weight 9, and the lower-partition-type weight support part 12 supports the lower-partition-type weight 9. it can.

  In such a configuration, FIG. 3 shows a case in which the car 5 is positioned below and three split weights 9 are mounted on the split weight mounting portion 8 of the counterweight 6 positioned above. . In this case, the weight of the main rope 4 acting on the car 5 side is large, and the weight of the main rope 4 acting on the counterweight 6 side is small. For this reason, when the three split weights 9 are placed on the split weight mounting portion 8 of the counterweight 6, the weight on the side of the car 5 with the drive sheave 2 interposed therebetween is balanced with the weight on the counterweight 6 side. The load acting on the hoisting machine driven to raise and lower the car 5 from the position shown in FIG. 3 can be reduced.

  When the car 5 is raised from the position shown in FIG. 3, the counterweight 6 side is relatively lowered. When the counterweight 6 side is lowered, the bent portion 12a of the upper split-type weight support portion 12 is engaged with the hole 10 of the upper split-type weight 9 during the lowering operation, and the upper split-type weight 9 is in the middle position. This is separated from the top of the split weight 9 and supported by the upper split weight support portion 12. When the counterweight 6 side is further lowered, the bent portion 12a of the middle split-type weight support portion 12 is engaged with the hole 10 of the middle split-type weight 9 during the lowering operation, and the middle split-type weight 9 is engaged. 9 is separated from the upper part of the lower divided weight 9 and is supported by the middle divided weight support 12. FIG. 2 shows that the upper divided weight 9 is supported by the upper divided weight support 12 and the middle divided weight 9 is supported by the middle divided weight support 12. The case where only the weight 9 is mounted on the split-type weight mounting part 8 is shown.

  When the car 5 is raised to the position shown in FIG. 2, the weight of the main rope 4 acting on the car 5 side becomes smaller than that in FIG. 3, and the main rope 4 acting on the counterweight 6 side. Is larger than the case of FIG. For this reason, by reducing the number of split weights 9 mounted on the split weight mounting portion 8 of the counterweight 6 to one, the weight on the side of the car 5 with the drive sheave 2 sandwiched and the weight on the counterweight 6 side The load acting on the hoisting machine driven to raise and lower the car 5 from the position shown in FIG. 2 can be reduced.

  When the car 5 is raised to the position shown in FIG. 1, in addition to the upper and middle split weights 9, the lower split weight 9 is also supported by the split weight support portion 12, and the split weight is loaded. A split weight 9 is not placed on the portion 8. When the car 5 is raised to the position shown in FIG. 1, the weight of the main rope 4 acting on the car 5 side is smaller than that in FIG. 2 and the main rope 4 acting on the counterweight 6 side. The weight is further increased compared to the case of FIG. For this reason, the weight on the side of the car 5 with the drive sheave 2 sandwiched and the weight on the side of the counterweight 6 can be balanced by eliminating the split weight 9 placed on the split weight platform 8. The load acting on the hoisting machine driven to raise and lower the car 5 from the position shown in FIG. 1 can be reduced.

  When the car 5 is lowered from the position shown in FIG. 1, the counterweight 6 is relatively raised. When the counterweight 6 side rises, the split weight 9 is put on the split weight support portion 8 one after another and the bent portion 12a of the split weight support portion 12 comes out of the hole 10 in the middle of the lifting operation, and the split weight The support of the split weight 9 by the support portion 12 is released.

  As the car 5 descends, the weight of the main rope 4 acting on the car 5 side increases and the weight of the main rope 4 acting on the counterweight 6 side decreases, but as shown in FIGS. The weights on the counterweight 6 side and the weight on the counterweight 6 side of the driving sheave 2 and the weight on the counterweight 6 side are increased. Can be balanced.

  Therefore, according to this elevator, it is possible to prevent the unbalance between the weight on the side of the car 5 and the weight on the side of the counterweight 6 that occurs when the car 5 is raised and lowered without using a compen- sion rope that has been used conventionally. can do. Further, since no compen- sion rope is used, it is possible to prevent the compen- sion rope from coming into contact with or entangled with the equipment in the hoistway 1 when the car 5 is raised or lowered or an earthquake occurs.

(Second Embodiment)
The elevator of the 2nd Embodiment of this invention is demonstrated based on FIG. Note that, in the second embodiment and subsequent embodiments, the same components as those of the previously described embodiments are denoted by the same reference numerals, and redundant descriptions are omitted.

  The basic structure of the elevator of the second embodiment is the same as that of the first embodiment. The difference from the first embodiment is that the split weight support 12 is attached to the counterweight rail 7.

  In such a configuration, also in the second embodiment, as in the first embodiment, the weight on the side of the car 5 and the weight on the side of the counterweight 6 generated as the car 5 is raised and lowered. Can be prevented.

  Furthermore, since the split weight support 12 is attached to the counterweight rail 7, the split weight support is not affected by the distance from the counterweight 6 to the wall 11 of the hoistway 1 or the shape of the wall 11. Part 12 can be attached.

(Third embodiment)
The elevator of the 3rd Embodiment of this invention is demonstrated based on FIG.

  The basic structure of the elevator of the third embodiment is the same as that of the first embodiment. The difference from the first embodiment is that an insertion hole 13 is formed in the base portion 9 a of each split weight 9, and the main rope 4 is inserted into the insertion hole 13. Note that the upper surface of the counterweight 6 is a split weight 14 on which the split weight 9 is placed.

  In such a configuration, also in the third embodiment, as in the first embodiment, the weight on the side of the car 5 and the weight on the side of the counterweight 6 generated as the car 5 moves up and down. Can be prevented.

  Further, since the main rope 4 is inserted into the insertion hole 13 formed in the base portion 9a of the split weight 9, it is possible to prevent the main rope 4 from being shaken. It is possible to prevent the device from being damaged due to contact with or tangling with the device inside.

  Further, since the upper surface portion of the counterweight 6 is used as the split weight mounting portion 14, it is not necessary to newly provide a split weight mounting portion with respect to the existing counterweight 6, and an increase in the manufacturing cost of the counterweight 6 is suppressed. be able to.

(Fourth embodiment)
The elevator of the 4th Embodiment of this invention is demonstrated based on FIG.

  The basic structure of the elevator of the fourth embodiment is the same as that of the first embodiment. The difference from the first embodiment is that the split weight support 12 is attached to the counterweight rail 7 as described in the second embodiment and the third embodiment. Thus, the insertion hole 13 is formed in the base portion 9 a of each split weight 9, and the main rope 4 is inserted into the insertion hole 13. In addition, the upper surface part of the counterweight 6 is used as the division | segmentation type weight mounting part 14. FIG.

  In such a configuration, in the fourth embodiment, as in the first embodiment, the weight on the side of the car 5 and the weight on the side of the counterweight 6 generated as the car 5 is raised and lowered. Can be prevented.

  Furthermore, since the split weight support 12 is attached to the counterweight rail 7, the split weight support is not affected by the distance from the counterweight 6 to the wall 11 of the hoistway 1 or the shape of the wall 11. Part 12 can be attached.

  Further, since the main rope 4 is inserted into the insertion hole 13 formed in the base portion 9a of the split weight 9, it is possible to prevent the main rope 4 from being shaken. It is possible to prevent the device from being damaged due to contact with or tangling with the device inside.

  Further, since the upper surface portion of the counterweight 6 is used as the split weight mounting portion 14, it is not necessary to newly provide a split weight mounting portion with respect to the existing counterweight 6, and an increase in the manufacturing cost of the counterweight 6 is suppressed. be able to.

(Fifth embodiment)
The elevator of the 5th Embodiment of this invention is demonstrated based on FIG.

  In the elevator according to the fifth embodiment of the present invention, a car 5 is connected to one end of a main rope 4 wound around a drive sheave 2 and a deflecting sheave 3, and a counterweight 6 is connected to the other end of the main rope 4. It is connected. The car 5 is guided so as to be movable in the vertical direction by a car rail 15 arranged in the hoistway 1 so as to extend in the vertical direction.

  The car 5 is provided with a split weight 16 that protrudes laterally from the car 5, and the split weight 9 is placed on the split weight 16. FIG. 7 shows a case where the split weight 9 is not placed on the split weight 16 and all the split weights 9 are supported by the split weight support 12.

  The structure of the split weight 9 and the split weight support portion 12 is the same as that of the first embodiment.

  In such a configuration, FIG. 7 shows a case where the car 5 is located below and the counterweight 6 is located above. In this case, the weight of the main rope 4 acting on the car 5 side is large, and the weight of the main rope 4 acting on the counterweight 6 side is small. For this reason, even if the split weight 9 is not placed on the split weight mounting portion 16 of the car 5, it is possible to balance the weight on the car 5 side with the drive sheave 2 sandwiched between the weight on the counter weight 6 side. The load acting on the hoisting machine driven to raise and lower the car 5 from the position shown in FIG. 7 can be reduced.

  When the car 5 is raised from the position shown in FIG. 7, the divided weights 9 are successively placed on the divided weight loading part 16 and the bent part 12 a of the divided weight support part 12 is opened in the middle of the raising operation. 10 and the support of the split weight 9 by the split weight support portion 12 is released.

  As the car 5 rises, the weight of the main rope 4 acting on the car 5 side decreases and the weight of the main rope 4 acting on the counterweight 6 side increases, but the split weights 9 are divided one after another. Since the weight on the side of the car 5 is increased by being placed on the type weight mounting part 16, it is possible to balance the weight on the side of the car 5 with the drive sheave 2 interposed therebetween and the weight on the side of the counterweight 6.

  Therefore, according to this elevator, it is possible to prevent the unbalance between the weight on the side of the car 5 and the weight on the side of the counterweight 6 that occurs when the car 5 is raised and lowered without using a compen- sion rope that has been used conventionally. can do. Further, since no compen- sion rope is used, it is possible to prevent the compen- sion rope from coming into contact with or entangled with the equipment in the hoistway 1 when the car 5 is raised or lowered or an earthquake occurs.

(Sixth embodiment)
The elevator of the 6th Embodiment of this invention is demonstrated based on FIG.

  The basic structure of the elevator of the sixth embodiment is the same as that of the elevator of the fifth embodiment. The difference from the fifth embodiment is that the split weight support portion 12 is attached to the car rail 15.

  In such a configuration, in the sixth embodiment, as in the first embodiment, the weight on the side of the car 5 and the weight on the side of the counterweight 6 generated as the car 5 is raised and lowered. Can be prevented.

  Further, since the split weight support 12 is attached to the car rail 15, the split weight support is not affected by the distance from the car 5 to the wall 11 of the hoistway 1 or the shape of the wall 11. Part 12 can be attached.

(Seventh embodiment)
The elevator of the 7th Embodiment of this invention is demonstrated based on FIG.

  The basic structure of the elevator of the seventh embodiment is the same as that of the fifth embodiment. The difference from the fifth embodiment is that an insertion hole 13 is formed in the base portion 9 a of each split weight 9, and the main rope 4 is inserted into the insertion hole 13. Note that the upper surface of the car 5 is a split weight 17 on which the split weight 9 is placed.

  In such a configuration, in the seventh embodiment, as in the fifth embodiment, the weight on the side of the car 5 and the weight on the side of the counterweight 6 generated as the car 5 is raised and lowered. Can be prevented.

  Further, since the main rope 4 is inserted into the insertion hole 13 formed in the base portion 9a of the split weight 9, it is possible to prevent the main rope 4 from being shaken. It is possible to prevent the device from being damaged due to contact with or tangling with the device inside.

  Further, since the upper surface portion of the car 5 is used as the split weight placing portion 17, it is not necessary to newly provide a separate weight placing portion with respect to the existing car 5, and an increase in manufacturing cost of the car 5 is suppressed. be able to.

(Eighth embodiment)
The elevator of the 8th Embodiment of this invention is demonstrated based on FIG.

  The basic structure of the elevator of the eighth embodiment is the same as that of the fifth embodiment. The difference from the fifth embodiment is that the split weight support 12 is attached to the car rail 15 as described in the sixth embodiment and the seventh embodiment. Thus, the insertion hole 13 is formed in the base portion 9 a of each split weight 9, and the main rope 4 is inserted into the insertion hole 13. As in the seventh embodiment, the upper surface portion of the car 5 is a split weight placing portion 17.

  In such a configuration, in the eighth embodiment, as in the fifth embodiment, the weight on the side of the car 5 and the weight on the side of the counterweight 6 generated as the car 5 is raised and lowered. Can be prevented.

  Furthermore, since the split weight support 12 is attached to the counter car rail 15, the split weight is not affected by the distance from the car 5 to the wall 11 of the hoistway 1 or the shape of the wall 11. The support part 12 can be attached.

  Further, since the main rope 4 is inserted into the insertion hole 13 formed in the base portion 9a of the split weight 9, it is possible to prevent the main rope 4 from being shaken. It is possible to prevent the device from being damaged due to contact with or tangling with the device inside.

  Further, since the upper surface portion of the car 5 is used as the split weight placing portion 17, it is not necessary to newly provide a separate weight placing portion with respect to the existing car 5, and an increase in manufacturing cost of the car 5 is suppressed. be able to.

It is an elevator of the 1st Embodiment of this invention, Comprising: It is a perspective view which shows the case where the counterweight provided with the division | segmentation type weight mounting part is located below. It is a perspective view which shows the case where a counterweight is located in an upper position, and one division | segmentation type weight is mounted in the division | segmentation type weight mounting part. It is a perspective view which shows the case where a counterweight is located in an upper position further, and three division | segmentation type weights are mounted in the division | segmentation type weight mounting part. It is a perspective view which shows the elevator of the 2nd Embodiment of this invention. It is a perspective view which shows the elevator of the 3rd Embodiment of this invention. It is a perspective view which shows the elevator of the 4th Embodiment of this invention. It is a perspective view which shows the elevator of the 5th Embodiment of this invention. It is a perspective view which shows the elevator of the 6th Embodiment of this invention. It is a perspective view which shows the elevator of the 7th Embodiment of this invention. It is a perspective view which shows the elevator of the 8th Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hoistway 2 Drive sheave 4 Main rope 5 Car cage 6 Balance weight 7 Balance weight rail 8 Split-type weight mounting part 9 Split-type weight 10 Hole 11 Wall part 12 Split-type weight support part 13 Insertion hole 14 Split-type weight support part 15 Ride car rail 16 Split-type weight rest 17 Split-type weight rest

Claims (10)

A car that goes up and down in the hoistway,
A counterweight that moves up and down via the main rope in response to the raising and lowering of the car;
A split weight placing portion provided on the counterweight;
A split weight placed on the split weight rest; and
A split weight support provided in the hoistway and supporting the split weight;
With
The split-type weight support part supports the split-type weight by lowering the split-type weight from the split-type weight support part when the split-type weight placed on the split-type weight-loading part is lowered together with the counterweight. An elevator characterized in that when the weight rises, the split weight supported by the weight is placed on the split weight-loading portion.   A hole is formed in the split weight, and the split weight support portion is engaged with the hole so that the split weight is supported by the split weight support portion, and the split weight support to the hole is supported. 2. The elevator according to claim 1, wherein the split weight is placed on the split weight mounting portion by disengaging the portion. 3.   The elevator according to claim 1 or 2, wherein the split weight support portion is attached to a wall portion of the hoistway.   The elevator according to claim 1 or 2, wherein the split weight support portion is attached to a balance weight rail that guides the balance weight so as to be movable in the vertical direction.   The elevator according to any one of claims 1 to 4, wherein an insertion hole is formed in the split weight, and the main rope is inserted into the insertion hole. A car that goes up and down in the hoistway,
A counterweight that moves up and down via the main rope in response to the raising and lowering of the car;
A split weight carrying portion provided in the car;
A split weight placed on the split weight rest; and
A split weight support portion provided in a hoistway for raising and lowering the car, and supporting the split weight;
With
The split-type weight support part supports the split-type weight by lowering the split-type weight from the split-type weight support part when the split-type weight placed on the split-type weight support part descends together with the car. An elevator characterized in that the split weight that is supported when the car is lifted is placed on the split weight mounting portion.   A hole is formed in the split weight, and the split weight support portion is engaged with the hole so that the split weight is supported by the split weight support portion, and the split weight support to the hole is supported. The elevator according to claim 6, wherein the split weight is placed on the split weight mounting portion by disengaging the portion.   The elevator according to claim 6 or 7, wherein the split weight support portion is attached to a wall portion of the hoistway.   The elevator according to claim 6 or 7, wherein the split weight support portion is attached to a car rail that guides the car so as to be movable in the vertical direction.   The elevator according to any one of claims 6 to 9, wherein an insertion hole is formed in the split weight, and the main rope is inserted into the insertion hole.

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