JP6555183B2 - Elevator elevator weight measuring device - Google Patents

Description

  The present invention relates to a weight measuring device for an elevator lifting body.

  In the conventional method of measuring the weight of the elevator lifting body suspended through the main rope in the hoistway, the middle portion of the main rope extending above the lifting body is gripped by a gripping tool, and this gripping tool is jacked. An apparatus is known that measures the weight of the lifting body by detecting the load at the time of the upward movement with a load sensor (for example, see Patent Document 1).

  It is also applied to an elevator equipped with a lifting body suspended via a main rope composed of a plurality of ropes inserted into an opening formed in the floor of a machine room formed in the upper part of the hoistway, and weighs In the elevator lifting / lowering body weight measurement method that uses an elevator to measure the weight of the lifting body, a weight measuring device is installed in the opening formed in the floor of the machine room, and a gripping tool is attached to the main rope. A device that measures the weight of a lifting body by lowering the lifting body and pressing the weight measuring device with a gripping tool is also known in the past (for example, see Patent Document 2).

JP 2001-226052 A Japanese Patent Laying-Open No. 2015-081192

  However, in the prior art shown in Patent Document 1, a foundation is required to push up the gripping tool in the middle of the main rope with a jack, and a pair of fixing frames are attached between the guide rails by a support member. The fixed frame is used as a basis for jacking up the tool. At this time, since it is necessary to use fixed frames having different sizes for different hoistway sizes, it is difficult to apply the hoistways of various sizes. In addition, since the size of the fixed frame that is required increases as the size of the hoistway increases, it becomes difficult to carry in and attach the fixed frame into the hoistway.

  Furthermore, in the prior art shown in either of Patent Document 1 and Patent Document 2, the measured weight includes the weight of the main rope below the gripping tool. Therefore, with these methods, it is difficult to know the exact weight of the lifting body such as a car. In particular, in the existing elevator, the weight of the main rope changes from the installation by use. For this reason, even if it is going to correct | amend the weight of a main rope from a measured value, since it is difficult to know the exact weight of a main rope, it becomes more difficult to know the exact weight of raising / lowering bodies, such as a cage | basket | car.

  The present invention has been made to solve such a problem, and can accurately measure the weight of a lifting body in a hoistway such as a car, and is easy for an elevator having hoistways of different sizes. It is possible to obtain an elevator lifting / lowering weight measuring apparatus that can be applied to the elevator.

  In the elevator lifting / lowering body weight measuring device according to the present invention, a rail bracket for supporting a rail installed in an elevator hoistway or a supporting rope stretched between eye plates connecting the rails, A weight measuring unit having an upper end connected to an intermediate portion of the support rope, a lower end connected to a lifting body in the hoistway, and a chain block and a suspension scale connected between the upper end and the lower end; It is set as the structure provided.

Alternatively, the elevator is provided in a machine room at the top of the elevator hoistway, and is disposed at least directly above a main rope hole formed in the floor of the machine room, and an upper end is connected to the support member, and the elevator A weight measuring unit having a lower end connected to an elevating body in the road and a chain block and a suspension scale connected between the upper end and the lower end is provided.

  Alternatively, a main rope pinching member fixed to an intermediate portion of one of a plurality of main ropes for suspending a lifting body in an elevator hoistway, and an upper end connected to the main rope pinching member, A weight measuring unit having a lower end connected to the body and a chain block and a suspension scale connected between the upper end and the lower end is provided.

  In the elevator lifting / lowering body weight measuring apparatus according to the present invention, the weight of the lifting / lowering body in a hoistway such as a car can be measured more accurately, and it is easily applied to elevators having hoistways of different sizes. There is an effect that it is possible.

It is a figure which shows typically the whole structure of the weight measuring apparatus of the elevator lifting / lowering body which concerns on Embodiment 1 of this invention. It is a figure which shows typically the whole structure of the weight measuring apparatus of the elevator lifting / lowering body which concerns on Embodiment 2 of this invention. It is a figure which shows typically the attachment structure of the supporting member with which the weight measuring apparatus of the elevator lifting / lowering body which concerns on Embodiment 2 of this invention is provided. It is the arrow line view seen from the direction of arrow A shown in FIG. It is a perspective view which shows the principal part of the supporting member shown in FIG. It is a perspective view of the fixture with which the attachment structure of the supporting member shown in FIG. 3 is provided. It is a figure which shows typically the whole structure of the weight measuring apparatus of the elevator lifting / lowering body which concerns on Embodiment 3 of this invention.

  DESCRIPTION OF EMBODIMENTS Embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and overlapping descriptions are simplified or omitted as appropriate. The present invention is not limited to the following embodiments, and various modifications can be made without departing from the spirit of the present invention.

Embodiment 1 FIG.
FIG. 1 relates to Embodiment 1 of the present invention and is a diagram schematically showing an overall configuration of an elevator lifting / lowering body weight measuring apparatus.

  First, the configuration of an existing elevator that is a weight measurement target of the elevator lifting / lowering body weight measuring apparatus according to the first embodiment of the present invention will be described with reference to FIG. As shown in FIG. 1, a car 200 is installed in an elevator hoistway 100 so as to be lifted and lowered. One end of the main rope 300 is connected to the upper end of the car 200. The other end of the main rope 300 is connected to the upper end of a counterweight (not shown). In addition, the counterweight is installed in the hoistway 100 like the car 200 so as to be raised and lowered. An intermediate portion of the main rope 300 is wound around a driving sheave and a deflector of a hoisting machine (not shown) installed at the top of the hoistway 100. In this way, the car 200 and the counterweight are suspended by the main rope 300 so as to move up and down in directions opposite to each other in the hoistway 100.

  In the hoistway 100, a pair of car rails 101 are installed facing each other. The car rail 101 and the car 200 are arranged along the ascending / descending direction to guide the raising / lowering of the car 200. Each car rail 101 is fixed to the inner wall surface of the hoistway 100 by a rail bracket 102. Further, the car rail 101 has a plurality of rails arranged and connected along the ascending / descending direction of the car 200. A not-shown eye plate is provided at a connecting portion of the rails, and the plurality of rails are connected by this eye plate.

  The car 200 includes a car room 201 and a car frame. The cab 201 is a box for a user or the like to board. The car room 201 is mounted in a car frame. The car frame is a frame provided so as to surround the upper and lower sides and the left and right sides of the car room 201. The car frame includes left and right vertical columns 202, an upper beam 203 hung between the vertical columns 202 above the car chamber 201, and a lower beam (not shown) that supports the car chamber 201 from below. I have.

  Next, the structure for measuring the weight of the elevator body of the existing elevator constructed as described above will be described. In addition, the case where the raising / lowering body used as the object of a weight measurement is made into the cage | basket | car 200 here is taken up. The lifting body that is the object of weight measurement can also be a counterweight. That is, the elevator lifting / lowering body weight measuring apparatus according to the first embodiment of the present invention can measure not only the car 200 but also the weight of the counterweight.

  When the weight of the existing elevator car 200 is measured, a support rope 411 is installed in the hoistway 100. Support rope connection portions 412 are formed at both ends of the support rope 411. The support rope connecting portion 412 at one end is connected to one rail bracket 102 of the pair of car rails 101. The other end support rope connecting portion 412 is connected to the other rail bracket 102 of the pair of car rails 101. At this time, it is desirable that the support rope connecting portions 412 at both ends of the support rope 411 are respectively connected to the rail brackets 102 at the same height position.

  Note that the support rope connecting portion 412 may be connected to the rail plate described above instead of the rail bracket 102. Further, the support rope connecting portion 412 may be connected not to the rail bracket 102 of the car rail 101 but to a weight rail bracket or eye plate (not shown) for guiding the counterweight. In this way, the supporting rope 411 is stretched between the rail bracket 102 or the eye plate.

  The support rope 411 provided as described above is for supporting the weight measuring unit 400 in the hoistway 100. A support side connection part 405 formed at the upper end of the weight measurement part 400 is connected to an intermediate part of the support rope 411. A car side connection portion 401 is formed at the lower end of the weight measuring portion 400. The car-side connection unit 401 is connected to the car 200 that is a lifting body to be measured for weight. Here, the car-side connection portion 401 is connected to the upper beam 203 of the car 200.

  A chain block 404 and a suspension scale 402 are connected between the support side connection portion 405 and the car side connection portion 401. Here, the chain block 404 and the suspension scale 402 are connected in series. That is, the upper hook of the chain block 404 is connected to the lower side of the support side connection portion 405. A suspension scale 402 is connected to the lower hook of the chain 403 of the chain block 404. A car-side connecting portion 401 is connected to the lower side of the suspension scale 402.

  When the weight of the elevator elevator car 200 configured as described above is used to measure the weight of the existing elevator car 200, it is first fixed so that the counterweight does not move. Next, an operator rides on the car 200, and the support rope 411 and the weight measuring unit 400 are attached as described above, and the state shown in FIG. 1 is obtained.

  Then, the worker on the car 200 winds up the chain 403 of the chain block 404. The chain block 404 is wound up until the weight of the car 200 is not applied to the main rope 300. In this state, the car block 200 and the total weight of the worker on the car 200 are applied to the chain block 404 and the suspension balance 402 of the weight measuring unit 400. The worker reads the indicated value of the suspension balance 402 in this state. Since the weight of the worker himself is a known amount, the weight of the car 200 which is the elevator body of the existing elevator can be accurately known by subtracting the weight of the worker from the read value of the suspended balance 402.

  It should be noted that the weight of the portion of the weight measuring unit 400 from the suspension scale 402 to the car-side connection unit 401 is taken into account in advance when the suspension scale 402 is corrected, so that the elevator elevator body can be more easily installed. The weight can be measured accurately.

  In the elevator lifting / lowering body weight measuring apparatus configured as described above, if a sufficiently long supporting rope 411 is prepared in advance, it is possible to cope with various sizes of the hoistway 100 and different sizes. The elevator having the hoistway 100 can be easily applied. Moreover, since the rope is used to support the weight measuring unit 400 in the hoistway 100, it is easy to carry in and install without being bulky. Furthermore, since the lower end of the weight measuring unit 400 can be directly connected to a lifting body such as the car 200, the weight of the existing elevator car 200 can be measured more accurately without including the weight of the main rope 300 or the like. Is possible.

Embodiment 2. FIG.
FIGS. 2 to 6 relate to Embodiment 2 of the present invention. FIG. 2 is a diagram schematically showing the overall configuration of an elevator lifting body weight measuring device, and FIG. 3 is an elevator lifting body weight measurement. The figure which shows typically the attachment structure of the supporting member with which an apparatus is provided, FIG. 4 is the arrow view seen from the direction of the arrow A shown in FIG. 3, FIG. 5 is the perspective view which shows the principal part of the supporting member shown in FIG. 6 is a perspective view of a fixture provided in the mounting structure of the support member shown in FIG.

  In the configuration of the first embodiment described above, the weight measuring unit 400 is supported by the support rope 411 installed in the hoistway 100. On the other hand, Embodiment 2 demonstrated here supports the weight measurement part 400 with the supporting member installed in the machine room of the hoistway 100 top part. Hereinafter, the elevator lifting / lowering body weight measuring apparatus according to the second embodiment will be described focusing on differences from the first embodiment.

  As shown in FIG. 2, a machine room 500 is provided at the top of the hoistway 100. A hoisting machine is installed in the machine room 500. On the floor in the machine room 500, a machine base 501 is installed. The hoisting machine is installed on the machine base 501. A main rope hole 502 is formed in the floor of the machine room. The side of the main rope 300 that is closer to the car 200 than the hoisting machine 4 passes through the main rope hole 502. A pair of machine tables 501 are installed so as to sandwich the main rope hole 502.

  When the weight of the existing elevator car 200 is measured, a support member 420 is installed in the machine room 500. The support member 420 is disposed at least immediately above the main rope hole 502. The support member 420 is for supporting the weight measuring unit 400 in the hoistway 100. A support side connection portion 405 formed at the upper end of the weight measuring portion 400 is connected to the intermediate portion of the support member 420. A car side connection portion 401 is formed at the lower end of the weight measuring portion 400. The car-side connection unit 401 is connected to the car 200 that is a lifting body to be measured for weight. Here, the car-side connection portion 401 is connected to the upper beam 203 of the car 200.

  A chain block 404 and a suspension scale 402 are connected between the support side connection portion 405 and the car side connection portion 401. Here, the chain block 404 and the suspension scale 402 are connected in series. That is, the upper hook of the chain block 404 is connected to the lower side of the support side connection portion 405. A suspension scale 402 is connected to the lower hook of the chain 403 of the chain block 404. A car-side connecting portion 401 is connected to the lower side of the suspension scale 402. The support side connection portion 405 of the weight measuring unit 400 and the chain block 404 are passed through the main rope hole 502.

  Next, the mounting structure of the support member 420 will be described with reference to FIGS. 3 to 6. Here, the support member 420 is installed on a pair of machine bases 501. As shown in FIG. 3, the machine base 501 is, for example, a steel material having a substantially H-shaped cross section. The support member 420 is installed on a pair of machine bases 501. Here, as shown in FIGS. 4 and 6, the support member 420 is made of, for example, a steel material having a hollow cylindrical shape.

  In order to fix the hollow cylindrical support member 420 on the machine base 501, a support member attachment 430 is used here. That is, the support member fixture 430 is fixed on each machine base 501. And the support member 420 is installed on the machine base 501 by attaching the support member 420 to these support member attachment tools 430.

  As shown in FIG. 5, each support member attachment 430 is configured by combining a first attachment 431 and a second attachment 432. These first fixture 431 and second fixture 432 are firmly combined by welding or the like, for example. The first attachment 431 is a rectangular parallelepiped, for example, steel member. A substantially U-shaped attachment support surface 433 is formed on the upper surface of the first attachment 431 according to the outer shape of the support member 420. A plurality of fixture through holes 434 penetrating both sides and the fixture support surface 433 are formed on both sides of the first fixture 431.

  The second fixture 432 is a plate-like member made of steel, for example. A cutout having the same shape as the fixture support surface 433 is formed on the upper side of the second fixture 432 in accordance with the outer shape of the support member 420. The first fixture 431 and the second fixture 432 are aligned so that the notch of the second fixture 432 is aligned with the fixture support surface 433 of the first fixture 431. . The lower side of the second fixture 432 protrudes further downward than the lower surface of the first fixture 431. A bolt through hole 435 is formed in the protruding portion of the second fixture 432.

  As shown in FIG. 6, a plurality of support member through holes 421 are formed in the support member 420 in a direction perpendicular to the longitudinal direction corresponding to the fixture through holes 434 of the support member fixture 430.

When the support member 420 is installed on the machine base 501, first, the support member attachment 430 is placed on the machine base 501, and the support member 420 is placed on the attachment support surface 433 of the support member attachment 430. The positions of the support member 420 and the support member fixture 430 are adjusted so that the positions of the support member through hole 421 and the fixture through hole 434 are aligned. Then, as shown in FIG. 4, the support member fixing bolt 422 is simultaneously passed through the support member through hole 421 and the fixture through hole 434 and fastened using a nut 442. Next, the fixture fixing bolt 441 is passed through the bolt through-hole 435 and fastened with a nut 442 so that the tip of the fixture fixing bolt 441 contacts the side surface of the machine base 501, and the support member fixture 430 is placed on the machine base 501. The support member 420 is fixed via
Other configurations are the same as those in the first embodiment, and detailed description thereof is omitted.

  When the weight of the elevator elevator car 200 configured as described above is used to measure the weight of the existing elevator car 200, it is first fixed so that the counterweight does not move. Next, the support member 420 is installed in the machine room 500, the support side connection portion 405 of the weight measurement unit 400 is connected to the support member 420, and the car rope side connection portion 401 side of the weight measurement unit 400 is connected to the main rope hole 502. Suspended in the hoistway 100. Subsequently, an operator rides on the car 200, and the car-side connecting part 401 of the weight measuring unit 400 is attached to the car 200 to obtain the state shown in FIG.

  Then, the worker on the car 200 winds up the chain 403 of the chain block 404. The chain block 404 is wound up until the weight of the car 200 is not applied to the main rope 300. In this state, the car block 200 and the total weight of the worker on the car 200 are applied to the chain block 404 and the suspension balance 402 of the weight measuring unit 400. The worker reads the indicated value of the suspension balance 402 in this state. Since the weight of the worker himself is a known amount, the weight of the car 200 which is the elevator body of the existing elevator can be accurately known by subtracting the weight of the worker from the read value of the suspended balance 402.

  In the elevator lifting / lowering body weight measuring apparatus according to the second embodiment configured as described above, the lifting / lowering body to be weight-measured can also be a counterweight as in the first embodiment. . That is, not only the car 200 but also the weight of the counterweight can be measured.

  In the elevator lifting / lowering body weight measuring apparatus configured as described above, the lower end of the weight measuring unit 400 can be directly connected to the lifting / lowering body such as the car 200, so the weight of the main rope 300 and the like is not included. It is possible to measure the weight of the existing elevator car 200 more accurately. In addition, since the distance between the machine bases 501 hardly changes even if the size of the hoistway 100 is different, if a support member 420 having a certain length is prepared, it can correspond to various hoistway 100 sizes. It is. At this time, by using the plurality of support member through holes 421 formed in the support member 420 and the fixture through holes 434 formed in the support member fixture 430, even when the distance between the machine bases 501 is different, it is easy. It can correspond to.

Embodiment 3 FIG.
FIG. 7 relates to Embodiment 3 of the present invention, and is a diagram schematically showing an overall configuration of an elevator lifting / lowering body weight measuring apparatus.

  In the configuration of the first embodiment described above, the weight measuring unit 400 is supported by the support rope 411 installed in the hoistway 100. On the other hand, Embodiment 3 demonstrated here supports the weight measurement part 400 using one of the main ropes of raising / lowering bodies, such as the cage | basket | car 200. FIG. Hereinafter, the elevator lifting / lowering body weight measuring apparatus according to the third embodiment will be described focusing on differences from the first embodiment.

  As shown in FIG. 7, a plurality of main ropes 300 are provided. Here, for example, three main ropes 300 are provided: a first main rope 301, a second main rope 302, and a third main rope 303.

  When the weight of the existing elevator car 200 is measured, the main rope pinching member 450 is fixed to one of the plurality of main ropes 300, here, the middle portion of the first main rope 301. Is done. The main rope sandwiching member 450 is fixed to an intermediate portion of the first main rope 301 by sandwiching the first main rope 301.

  The upper end of the weight measuring unit 400 is connected to the main rope sandwiching member 450. A car side connection portion 401 is formed at the lower end of the weight measuring portion 400. The car-side connection unit 401 is connected to the car 200 that is a lifting body to be measured for weight. Here, the car-side connection portion 401 is connected to the upper beam 203 of the car 200.

A chain block 404 and a suspension scale 402 are connected between the upper end of the weight measuring unit 400 connected to the main rope pinching member 450 and the car-side connecting unit 401. Here, the chain block 404 and the suspension scale 402 are connected in series. That is, the upper hook of the chain block 404 is connected to the lower side of the support side connection portion 405. A suspension scale 402 is connected to the lower hook of the chain 403 of the chain block 404. A car-side connecting portion 401 is connected to the lower side of the suspension scale 402.
Other configurations are the same as those in the first embodiment, and detailed description thereof is omitted.

  When the weight of the elevator elevator car 200 configured as described above is used to measure the weight of the existing elevator car 200, it is first fixed so that the counterweight does not move. Next, an operator gets on the car 200, and the main rope pinching member 450 and the weight measuring unit 400 are attached as described so far, and the state shown in FIG. 7 is obtained.

  Then, the worker on the car 200 winds up the chain 403 of the chain block 404. The chain block 404 is wound up by fixing the main rope pinching member 450 out of the plurality of main ropes 300, specifically, the portion below the main rope pinching member 450 of the first main rope 301 here. This is performed until the weight of the car 200 is not applied to the main rope sandwiching member 450 that is not fixed, specifically, the second main rope 302 and the third main rope 303 here.

  In this state, the car block 200 and the total weight of the worker on the car 200 are applied to the chain block 404 and the suspension balance 402 of the weight measuring unit 400. The worker reads the indicated value of the suspension balance 402 in this state. Since the weight of the worker himself is a known amount, the weight of the car 200 which is the elevator body of the existing elevator can be accurately known by subtracting the weight of the worker from the read value of the suspended balance 402.

  In the above description, the case where the car-side connecting portion 401 is connected to the upper beam 203 of the car 200 has been described. However, the car-side connecting portion 401 is connected to, for example, the car from the main rope pinching member 450 of the first main rope 301. The portion on the 200 side may be connected by being pinched by a pinching member different from the main rope pinching member 450.

  Further, in the elevator lifting / lowering body weight measuring apparatus according to the third embodiment configured as described above, as in the first and second embodiments, the lifting / lowering body that is the object of weight measurement is used as a counterweight. You can also. That is, not only the car 200 but also the weight of the counterweight can be measured.

  In the elevator lifting weight measuring apparatus configured as described above, it is possible to deal with various sizes of the hoistway 100 and can be easily applied to elevators having hoistways 100 of different sizes. It is. Moreover, since the size of the weight measurement part 400 and the main rope pinching member 450 is comparatively small, carrying in and installation are easy. Furthermore, since the lower end of the weight measuring unit 400 can be directly connected to a lifting body such as the car 200, the weight of the existing elevator car 200 can be measured more accurately without including the weight of the main rope 300 or the like. Is possible.

DESCRIPTION OF SYMBOLS 100 Hoistway 101 Car rail 102 Rail bracket 200 Car 201 Car room 202 Vertical column 203 Upper beam 300 Main rope 301 First main rope 302 Second main rope 303 Third main rope 400 Weight measuring part 401 Car side connection part 402 Lifting Scale 403 Chain 404 Chain Block 405 Support Side Connection Portion 411 Support Rope 412 Support Rope Connection Portion 420 Support Member 421 Support Member Through Hole 422 Support Member Fixing Bolt 430 Support Member Fixing Tool 431 First Fixing Tool 432 Second Mounting tool support surface 434 Mounting tool through hole 435 Bolt through hole 441 Mounting tool fixing bolt 442 Nut 450 Main rope clamping member 500 Machine room 501 Machine base 502 Main rope hole

Claims (5)

A rail bracket for supporting a rail installed in an elevator hoistway or a support rope stretched between eye plates for connecting the rails;
A weight measuring unit having an upper end connected to an intermediate portion of the support rope, a lower end connected to a lifting body in the hoistway, and a chain block and a suspension scale connected between the upper end and the lower end; Elevator lifting and lowering body weight measuring device. A support member provided in the machine room at the top of the elevator hoistway and disposed at least directly above the main rope hole formed in the floor of the machine room;
An elevator comprising: an upper end connected to the support member; a lower end connected to a lifting body in the hoistway; and a weight measuring unit in which a chain block and a suspension scale are connected between the upper end and the lower end. Lifting body weight measuring device.   The weight measuring device for an elevator lifting body according to claim 2, wherein the support member is provided on a machine base that supports a hoist installed in the machine room. A main rope pinching member fixed to an intermediate portion of one of a plurality of main ropes for suspending a lifting body in an elevator hoistway;
Lifting of an elevator comprising: a weight measuring unit having an upper end connected to the main rope sandwiching member, a lower end connected to the lifting body, and a chain block and a suspension scale connected between the upper end and the lower end Body weight measuring device. The lifting body is an elevator car;
The weight measuring device for an elevator lifting body according to any one of claims 1 to 4, wherein the lower end of the weight measuring unit is connected to an upper beam of the car.

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