JP2011144006A - Weight body of counterweight of elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a weight body of a counterweight of an elevator having a concrete portion which is not damaged by a fixing means for fixing a large number of stacked weight bodies to prevent the weight bodies from being displaced vertically. <P>SOLUTION: The weight body is mounted to the counterweight of an elevator in a stacked state, fixed by the fixing means so as not to be displaced vertically, and constituted by filling a metal frame 26 with concrete. A protective means which receives the downward a pressing force of the fixing means is installed on the upper surface of the weight body at a portion with which the fixing means is brought into contact. Since the fixing means is not brought into contact directly with the concrete portion of the weight body, the fixing of the weight body in the vertical direction is not loosened by the damage of the concrete portion. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a weight body of an elevator balancing weight, and more particularly, when a weight body is manufactured by filling a metal frame with concrete, the weight body by a fixing means for fixing the vertical displacement of these weight bodies. The present invention relates to a technique for improving the concrete portion of the steel so as not to be damaged.

Conventionally, an elevator and a counterweight are suspended in a fishing bottle shape to balance the weight, and this counterweight has a structure generally shown in FIG.
More specifically, the counterweight 10 constitutes a weight frame 5 by combining a pair of left and right vertical beams 1 and 2 having a U-shaped cross section and a pair of upper and lower horizontal beams 3 and 4. A large number of weights 6 are stacked inside.
When the bolts 8 and 8 that are screwed to the L-shaped brackets 7 and 7 fixed to the upper inner wall surfaces of the vertical beams 1 and 2 with bolts or the like are tightened, the lower ends of these bolts 8 and 8 are the most. It abuts on the upper surface of the upper weight body 6 so as to prevent the vertical displacement of each weight body 6 as it moves up and down.
Furthermore, a guide, a weight side sheave, and the like (not shown) are attached to the weight frame 5 to complete the counterweight 10 (see, for example, Patent Document 1 below).

  By the way, the weight body 6 of the counterweight 10 has been conventionally manufactured by casting a metal material such as lead or cast iron into a predetermined shape or cutting a thick metal plate. As the cost increases, a structure in which a metal frame is filled with concrete has been adopted.

The concrete-filled type weights will be described with reference to FIGS. 14 to 16. The weights 20 are a pair of left and right sides of a central frame 21 in which a steel plate is folded into a U-shaped cross-section and a steel strip in a Ω shape. End frames 22L and 22R, a pair of left and right bottom plates 23L and 23R, and a plurality of reinforcing bars 24 and 25 for reinforcement.
Then, the central frame 21, the end frames 22L and 22R, the bottom plates 23L and 23R, and the reinforcing bars 24 and 25 are welded together to produce the metal frame 26 shown in FIG. Is filled and cured, the weight body 20 shown in FIG. 14 can be obtained.

JP 2001-348176 A

By the way, the concrete portion 27 is exposed on the upper surface of the concrete-filled weight body 20 described above.
Thus, after a large number of weights 20 are stacked inside the weight frame 5 of the counterweight 10 shown in FIG. 13, when the bolts 8 and 8 are tightened, the surface of the concrete portion 27 of the uppermost weight 20 is applied. The lower ends of the bolts 8 and 8 come into contact.
At this time, the concrete portion 27 is more susceptible to cracking than the weight 6 manufactured from a metal material such as lead or cast iron. Therefore, when vertical acceleration acts on the weight body 20 as it moves up and down, the lower ends of the bolts 8 and 8 are used. There is a possibility that the portion in contact with will gradually sink, and the vertical fixing of the stacked weight bodies 20 may be impaired.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-mentioned problems of the prior art, and an elevator in which the concrete portion of the weight body is not damaged by the fixing means for fixing the stacked many weight bodies so as not to be displaced in the vertical direction. The object is to provide a counterweight body.

One aspect of the present invention that solves the above problems is as follows:
A weight body with a structure in which a metal frame is filled with concrete, mounted in a state of being stacked on an elevator counterweight and fixed by a fixing means so as not to be displaced in the vertical direction,
A protective means for receiving a downward pressing force of the fixing means is provided at a portion of the upper surface of the weight body where the fixing means abuts.

The protection means may be a metal plate that is connected to the metal frame and covers the upper surface of the weight body.
At this time, a handle for gripping when the weight body is transported while being suspended by a hand is detachably attached to the metal plate or the metal frame body, thereby transporting and installing the weight body. The workability can be improved.

Further, the protection means suspends the weight body by hand, which is displaceable between a state of being connected to the frame body and protruding upward from the upper surface of the weight body and a state of being buried in the inside of the weight body. The handle can be gripped when transported in a lowered state.
At this time, the handle is supported so as to be displaceable in the vertical direction with respect to the metal frame, and receives a downward pressing force of the fixing means when displaced downward and buried in the weight body. Can be configured.
Or the said handle | steering-wheel is supported by the said metal frame so that raising / lowering is possible, and when it falls down on the upper surface of a weight body, it can comprise in the shape which receives the downward pressing force of the said fixing means.

Furthermore, another aspect of the present invention that solves the above problems is as follows:
A weight body having a structure in which a metal frame body is filled with concrete, which is mounted in a stacked state of elevator balancing weights and is fixed by a fixing means so as not to be displaced in the vertical direction,
The fixing means includes a screw member that is detachably mounted on the uppermost weight body of the stacked weight bodies and protrudes upward, and is fixed to the counterweight and is engaged with the bolt in the vertical direction. The engaging members can be combined.
At this time, the bolt can be structured to protrude upward by screwing into a screw nut embedded in a concrete portion of the weight body.

  ADVANTAGE OF THE INVENTION According to this invention, the weight body of the elevator balance weight which the concrete part does not damage by the fixing means which fixes so that many laminated | stacked weight bodies may not move to an up-down direction can be provided.

The perspective view which shows the weight body of 1st Embodiment. The perspective view which shows the state which attached the handle | steering_wheel to the weight body of a 1st modification. Sectional drawing which shows the structure of the handle | steering-wheel part of the weight body shown in FIG. The perspective view which shows the state which fixed the weight body of the 2nd modification. The perspective view which shows the state which attached the handle | steering_wheel to the weight body of a 2nd modification. The perspective view which shows the state which protruded the handle | steering-wheel of the weight body of 2nd Embodiment upwards. Sectional drawing which shows the structure of the handle | steering-wheel part of the weight body shown in FIG. The perspective view shown in the state which fixed the weight body of the 2nd modification. The perspective view which shows the state which made the handle | steering-wheel of the weight body of a 3rd modification protruded upwards. Sectional drawing which shows the structure of the handle | steering-wheel part of the weight body shown in FIG. The perspective view shown in the state which fixed the weight body of the 3rd modification. The perspective view shown in the state which fixed the weight body of 3rd Embodiment. The perspective view which shows typically the structure of the counterweight of an elevator. The perspective view which decomposes | disassembles and shows the metal frame of the conventional concrete filling type weight body. The perspective view which shows the metal frame shown in FIG. 14 in a completed state. The perspective view which shows the conventional weight body of a concrete filling type.

  Hereinafter, with reference to FIGS. 1-12, each embodiment and the modification of the weight body of the elevator balance weight of this invention are demonstrated in detail. In the following description, the same reference numerals are used for the same parts, and redundant descriptions are omitted.

First Embodiment First, a weight body of an elevator balancing weight according to a first embodiment will be described with reference to FIG.

  The weight body 100 of the first embodiment shown in FIG. 1 has a steel protective plate 28L on the portion of the concrete portion 27 exposed on the upper surface thereof where the lower ends of the bolts 8 and 8 as fixing means abut. 28R, and both ends thereof are welded to the center frame 21 and the end frames 22L, 22R, respectively.

As a result, the weight body 100 of the first embodiment is laminated inside the weight frame 5 of the elevator balancing weight 10 as shown in FIG. 13, and the bolts 8 and 8 serving as fixing means are tightened. Sometimes, the lower ends of the bolts 8 and 8 come into contact with the upper surfaces of the protection plates 28L and 28R.
Therefore, even if vertical acceleration is applied to the weights 100 stacked by raising and lowering the counterweight 10, the lower ends of the bolts 8 and 8 do not damage the surface of the concrete portion 27.
Furthermore, since the upper ends of the center frame 21 and the end frames 22L and 22R constituting the metal frame 26 are integrally connected by the protection plates 28L and 28R, the strength of the metal frame can be improved. Can do.

First Modified Example Next, a weight body 150 according to a first modified example will be described with reference to FIGS.

In the weight body 150 of the first modified example, handles 30L and 30R that are gripped when transporting the weight body 100 of the first embodiment while being suspended by hand are provided on the metal frame 26 in a freely detachable manner. It has a structure.
More specifically, brackets 32, 32 whose lower ends are bent in an L shape are attached to both ends of a round bar-shaped handle body 31.
Engaging members 33 and 33 whose upper ends are bent into an L shape are fixed inside the central frame 21 so as to be detachably engaged with the brackets 32 and 32.
Further, the concrete portion 27 is provided with a recess 34 for inserting each bracket 32 of the handle body 31 from above.

When stacking the weight body 150 of the first modification inside the weight frame 5 of the elevator counterweight 10, the operator attaches the brackets 32 and 32 of the handles 30L and 30R carried to the weight body 150. The engagement members 33 and 33 are engaged with each other.
Thereby, the operator can easily perform the operation of lifting the weight body 150 by hand and sequentially stacking the weight body inside the weight frame 5.
In addition, the operator can remove the handles 30L and 30R from one weight 150 that has been stacked and slide it on the weight 150 to be stacked next by sliding the handles 30L and 30R.

Further, since the protection plates 28L and 28R are provided on the upper surface of the uppermost weight body 150 among the many stacked weight bodies 150, the lower ends of the bolts 8 and 8 are the protection plates as shown in FIG. It abuts on the upper surfaces of 28L and 28R.
Therefore, even if acceleration in the vertical direction acts on the weights 150 stacked as the counterweight 10 moves up and down, the lower ends of the bolts 8 and 8 do not damage the surface of the concrete portion 27.

Second Modified Example Next, a weight body according to a second modified example will be described with reference to FIG.

The weight body 170 of the second modified example allows the handles 35L and 35R, which are gripped when the weight body 100 of the first embodiment is transported while being suspended by hand, to be freely attached to and detached from the protective plates 28L and 28R. It has a provided structure.
More specifically, brackets 37, 37 whose lower ends are hook-shaped are attached to both ends of a round bar-shaped handle main body 35.
Further, the protective plates 28L and 28R are respectively provided with engaging holes 28a through which the hooked portions of the brackets 37 and 37 are inserted from below to engage.
The concrete portion 27 is provided with a recess 34 for inserting each bracket 37 of the handle body 36 from above.

When stacking the weight body 170 of the second modified example inside the weight frame 5 of the elevator balancing weight 10, the operator attaches the brackets 37, 37 of the handles 35L, 35R carried to the protective plate 28L. , 28R are engaged with each other.
Thereby, the operator can easily perform the operation of lifting the weight body 170 by hand and sequentially stacking the weight body 5 inside the weight frame 5.
In addition, the operator can remove the handles 35L and 35R from one weight 170 that has been stacked, and can attach it to the weight 170 to be stacked next.

Furthermore, since the protection plates 28L and 28R are provided on the upper surface of the uppermost weight 170 among the many stacked weights 170, the lower ends of the bolts 8 and 8 are the protection plates as shown in FIG. It abuts on the upper surfaces of 28L and 28R.
Therefore, even if vertical acceleration acts on the weights 170 stacked as the counterweight 10 is raised and lowered, the lower ends of the bolts 8 and 8 do not damage the surface of the concrete portion 27.

Second Embodiment Next, a weight body according to a second embodiment will be described with reference to FIGS.

The weight body 200 of the second embodiment shown in FIG. 6 is provided with handles 40L and 40R instead of the protection plates 28L and 28R in the weight body 100 of the first embodiment described above.
As shown in FIG. 7, the handles 40L and 40R include a handle main body 41 having a structure in which a strip-shaped steel plate is bent in a U-shape, and round bar-shaped shaft portions 42 respectively protruding from both end walls of the handle main body 41. , 42.

In addition, engaging portions 43 and 43 through which a long hole 43a extending in the vertical direction passes are fixed inside the central frame 21 to receive the shaft portions 42 and 42 of the handle main body 41, respectively.
Thus, the handle 40L, 40R is between the state of protruding upward from the upper surface of the concrete portion 27 as shown in FIG. 6 and the state of being buried in the concrete portion 27 as shown in FIG. It can be displaced in the vertical direction.
Further, the concrete portion 27 is provided with recesses 44 for storing the handles 40L and 40R.

Therefore, when stacking the weight body 200 of the second embodiment on the inner side of the weight frame 5 of the elevator balancing weight 10, the operator projects the weight body 200 by protruding the handles 40 </ b> L and 40 </ b> R upward. By lifting, it is possible to easily perform the operation of sequentially laminating the inside of the weight frame 5.
When the operation of laminating the weight body 200 inside the weight frame 5 of the counterweight 10 of the elevator is completed, the handles 40L and 40R are buried in the recesses 44 and 44 of the concrete portion 27, and the handle body 41 , 41 is flush with the upper surface of the concrete portion 27.

As a result, as shown in FIG. 8, when the bolts 8 are tightened, the lower ends of the bolts 8 are brought into contact with the upper surfaces of the handle bodies 41 and 41.
The shaft portions 42 and 42 of the handle main bodies 41 and 41 are in contact with the lower ends of the long holes 43a and 43a of the engaging members 43 and 43, respectively.
Accordingly, the force with which the bolts 8 and 8 press the weight body 200 downward is transmitted from the metal frame body 26 to the lower weight body 200 via the handle main bodies 41 and 41 and the engaging members 43 and 43. Even if vertical acceleration is applied to the weights 200 stacked as the counterweight 10 moves up and down, the lower ends of the bolts 8 and 8 do not damage the surface of the concrete portion 27 of the weight 200.

Third Modification Next, a weight body according to a third modification will be described with reference to FIGS.

Handles 50L and 50R are provided in the weight body 250 of the third modification shown in FIG. 9 instead of the protection plates 28L and 28R in the weight body 100 of the first embodiment described above.
As shown in FIG. 10, the handles 50L and 50R include a handle main body 51 having a structure in which a base end portion of a steel plate having a window hole 51a penetrating through a central portion thereof is bent into an L shape, and the handle main body 51. And rod-shaped shaft portions 52, 52 respectively protruding from both end walls.

Engaging members 53 and 53 with round holes extending in the left-right direction are fixed inside the central frame 21 to receive the shafts 52 and 52 of the handle main body 51.
Thereby, the handle 50L, 50R is between the state of protruding upward from the upper surface of the concrete portion 27 as shown in FIG. 9 and the state of being buried in the concrete portion 27 as shown in FIG. It can turn up and down freely.
The concrete portion 27 is provided with recesses 54 and 54 for storing the handles 50L and 50R in a lying state.

Therefore, when stacking the weight body 250 of the third modified example on the inside of the weight frame 5 of the elevator balancing weight 10, the operator projects the weight body 250 by hand by projecting the handles 50L and 50R upward. By lifting, it is possible to easily perform the operation of sequentially laminating the inside of the weight frame 5.
When the operation of laminating the weight body 250 inside the weight frame 5 of the elevator counterweight 10 is completed, the handles 50L and 50R are buried in the recesses 54 and 54 of the concrete portion 27, and the handle main body 51 , 51 is flush with the upper surface of the concrete portion 27.

As a result, as shown in FIG. 11, when the bolts 8 and 8 are tightened, the lower ends of the bolts 8 and 8 come into contact with the upper surfaces of the handle bodies 51 and 51.
The portions 51 a and 51 a of the handle bodies 51 and 51 with which the lower ends of the bolts 8 and 8 abut are in close contact with the bottom surfaces of the recesses 54 and 54 of the concrete portion 27.
Therefore, even if vertical acceleration is applied to the weights 250 stacked as the counterweight 10 is raised and lowered, the lower ends of the bolts 8 and 8 do not damage the surface of the concrete portion 27 of the weight 250. .

Third Embodiment Next, a weight body according to a third embodiment will be described with reference to FIG.

  The weight body 300 of the third embodiment shown in FIG. 12 is replaced with the protection plates 28L and 28R in the weight body 100 of the first embodiment and the handles 40L and 40R in the weight body 200 of the second embodiment. Further, screw nuts 60L and 60R buried in the concrete portion 27 are provided.

  Thereby, when stacking the weight body 300 of the third embodiment on the inner side of the weight frame 5 of the elevator balancing weight 10, the operator screws the male screw portion of the carrying handle (not shown). Since the weight body 300 can be lifted by hand by screwing into the nuts 60L and 60R, the work of sequentially stacking the weight body 300 inside the weight frame 5 can be easily performed.

When the operation of laminating the weight body 300 inside the weight frame 5 is completed, the screw members 61 and 61 are screwed into the respective screw nuts 60 of the uppermost weight body 300 so as to protrude upward.
Then, after engaging the brackets 62L and 62R with the screw members 61 and 61, respectively, the brackets 62L and 62R are screwed to the inner wall surface of the weight frame 5.
Next, the weight 300 can be fixed in the vertical direction by tightening the double lock nuts 63, 63 screwed into the screw members 61, 61.
Therefore, even if vertical acceleration acts on the weights 300 stacked by raising and lowering the counterweight 10, the surface of the concrete portion 27 of the weight 300 is not damaged.

As mentioned above, although each embodiment and each modification of the weight body of the elevator counterweight of this invention were demonstrated in detail, this invention is not limited by embodiment mentioned above, A various change is possible. Needless to say.
For example, in the embodiment described above, the metal frame 26 constituting the weight body is constituted by the center frame 21, the end frames 22L and 22R, the bottom plates 23L and 23R, etc., but is constituted by other parts. You can also
Further, the counterweight 10 shown in FIG. 13 has a structure in which the brackets 7 and 7 used for fixing the weight body are fixed to the left and right end faces 1a and 2a of the vertical beams 1 and 2 using bolts or the like. These brackets 7 and 7 can also be fixed to the front surfaces 1b and 2b of the vertical beams 1 and 2, respectively.
Furthermore, it goes without saying that the present invention can also be applied to the case where the weight body is fixed by using a bolt extending through the transverse beam 3 of the counterweight 10 and extending in the vertical direction without using the brackets 7 and 7.

6 Conventional weight body 7 Bracket 8 Bolt 10 Elevator balancing weight 20 Conventional weight body 26 Metal frame 27 Concrete portion 28 Protection plate 30 Handle 40 Handle 50 Handle 60 Screw nut 61 Screw member 62 Bracket 63 Double lock nut 100 1st Weight body 150 of the embodiment Weight body 170 of the first modified example Weight body 200 of the second modified example Weight body 300 of the second embodiment Weight body of the third embodiment

Claims (8)

A weight body with a structure in which a metal frame is filled with concrete, mounted in a state of being stacked on an elevator counterweight and fixed by a fixing means so as not to be displaced in the vertical direction,
A weight body of an elevator balancing weight having a protection means for receiving a downward pressing force of the fixing means at a portion of the upper surface of the weight body where the fixing means abuts.   The weight of an elevator balancing weight according to claim 1, wherein the protection means is a metal plate that is connected to the metal frame and covers an upper surface of the weight.   The metal plate or the metal frame is configured to be detachably attachable to a handle that is gripped when the weight body is transported while being suspended by hand. The weight of the elevator counterweight described in 1 or 2.   The protection means is connected to the metal frame and is freely displaceable between a state of protruding upward from the upper surface of the weight body and a state of being buried in the weight body. The elevator balance weight spindle according to claim 1, wherein the handle is a handle that is gripped when transported in a suspended state.   The handle is configured to be supported so as to be displaceable in the vertical direction with respect to the metal frame, and to receive a downward pressing force of the fixing means when displaced downward and buried in the weight body. The weight of the elevator counterweight according to claim 4, wherein   The handle is pivotally supported with respect to the metal frame so that the handle is configured to receive a downward pressing force of the fixing means when lying on the upper surface of the weight body. The weight of the elevator counterweight according to claim 4. A weight body with a structure in which a metal frame is filled with concrete, mounted in a state of being stacked on an elevator counterweight and fixed by a fixing means so as not to be displaced in the vertical direction,
The fixing means includes a screw member that is detachably attached to the uppermost weight body of the stacked weight bodies and protrudes upward, and is fixed to the counterweight and vertically extends with respect to the screw member. An elevator balancing weight having an engaging member to be engaged.   The weight body of an elevator balancing weight according to claim 7, wherein the screw member is structured to be screwed into a screw nut embedded in a concrete portion of the weight body and project upward.

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