CN117228487A - Elevator traction machine and additional rope sheave device - Google Patents
Elevator traction machine and additional rope sheave device Download PDFInfo
- Publication number
- CN117228487A CN117228487A CN202211169584.6A CN202211169584A CN117228487A CN 117228487 A CN117228487 A CN 117228487A CN 202211169584 A CN202211169584 A CN 202211169584A CN 117228487 A CN117228487 A CN 117228487A
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- sheave
- additional
- main body
- divided pieces
- fixing
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- 239000000725 suspension Substances 0.000 claims description 15
- 230000008878 coupling Effects 0.000 claims description 11
- 238000010168 coupling process Methods 0.000 claims description 11
- 238000005859 coupling reaction Methods 0.000 claims description 11
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Abstract
The purpose of the present invention is to obtain an elevator traction machine and an additional sheave device, which can restrain the deviation of a sheave groove between adjacent divided pieces. The sheave device (16) has an annular sheave body (21) and a plurality of fixing members (22). The additional sheave body (21) has a plurality of segments (23) and a plurality of connecting pins (24). The plurality of divided pieces (23) are arranged in a circular shape along the outer periphery of the sheave (15). A plurality of rope wheel grooves (23 a) are provided on each of the dividing pieces (23). A plurality of connecting pins (24) connect adjacent divided pieces (23) respectively.
Description
Technical Field
The present invention relates to an elevator traction machine and an additional sheave device.
Background
In a conventional elevator hoisting machine, a temporary sheave is attached to the outer periphery of a sheave during an elevator installation operation. The temporary sheave is formed by combining two divided bodies. Rope grooves are formed in each of the divided bodies. The two divided bodies are integrated by fastening a plurality of fasteners and attached to the outer periphery of the sheave (for example, refer to patent document 1).
Prior art literature
Patent literature
Patent document 1: japanese laid-open patent publication No. 59-195248
Disclosure of Invention
Problems to be solved by the invention
In the above-described conventional elevator hoisting machine, the two divided bodies are integrated by fastening a plurality of fasteners, and are attached to the outer periphery of the sheave. Therefore, a deviation is likely to occur between the two divided bodies, and it is difficult to make the rope groove of one divided body continuous with the rope groove of the other divided body as one circle.
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an elevator hoisting machine and an additional sheave apparatus that can suppress the displacement of a sheave groove between adjacent divided pieces.
Means for solving the problems
The elevator traction machine of the invention comprises: a rope pulley; a hoisting machine motor that rotates the sheave; and an additional sheave device attached to the sheave and rotatable integrally with the sheave, the additional sheave device including: an annular additional sheave body covering the outer periphery of the sheave, the suspension body being suspended from the additional sheave body; and a plurality of fixing members for fixing the additional sheave body to the sheave, the additional sheave body including: a plurality of dividing pieces arranged in a circular shape along the outer circumference of the sheave; and a plurality of connecting pins that connect the adjacent divided pieces, respectively, wherein each divided piece is provided with a sheave groove into which the suspension body is inserted, each connecting pin is parallel to the axial direction of the sheave, and each divided piece is rotatably connected to the adjacent divided piece about the connecting pin.
The additional sheave device of the present invention includes: a belt-shaped additional sheave main body wound around the sheave so as to cover the outer periphery of the sheave of the elevator hoisting machine, the suspension body being suspended from the additional sheave main body; and a plurality of fixing members for fixing the additional sheave body to the sheave, the additional sheave body including: a plurality of dividing pieces provided with sheave grooves into which the suspension is inserted and arranged in a circular shape along the outer circumference of the sheave; and a plurality of connecting pins that connect the adjacent divided pieces, respectively, each connecting pin being parallel to a direction corresponding to an axial direction of the sheave when the additional sheave main body is wound around the sheave, each divided piece being rotatably connected with respect to the adjacent divided piece about the connecting pin.
Effects of the invention
According to the present invention, the sheave grooves between adjacent segments can be prevented from being offset.
Drawings
Fig. 1 is a side view showing an elevator hoisting machine according to embodiment 1.
Fig. 2 is a front view showing the sheave and the additional sheave apparatus of fig. 1.
Fig. 3 is a cross-sectional view taken along line III-III of fig. 2.
Fig. 4 is a front view showing the segment of fig. 2 in an enlarged manner.
Fig. 5 is a side view illustrating the segment of fig. 4.
Fig. 6 is a plan view illustrating the divided sheet of fig. 4.
Fig. 7 is a front view showing a state in which the additional sheave apparatus of embodiment 2 is attached to a sheave.
Fig. 8 is a cross-sectional view taken along line VIII-VIII of fig. 7.
Fig. 9 is a front view of the segment of fig. 7 shown enlarged.
Fig. 10 is a side view illustrating the segment of fig. 9.
Fig. 11 is a plan view illustrating the divided piece of fig. 9.
Description of the reference numerals
12: an elevator traction machine; 14: a traction machine motor; 15: a rope pulley; 16: an additional sheave device; 17: a hanging body; 21: an additional sheave body; 22: a fixing member; 23: dividing the sheet; 23a: rope wheel grooves; 23b: a dividing piece main part; 23c: protruding part: 23d: a connecting part; 23e: a fixing part; 23j: a threaded hole; 24: a connecting pin; 26: and adjusting the bolts.
Detailed Description
Hereinafter, embodiments will be described with reference to the drawings.
Embodiment 1
Fig. 1 is a side view showing an elevator hoisting machine according to embodiment 1. A machine base 11 is arranged in the machine room. The machine room is provided above a hoistway, not shown. An elevator hoist 12 and a deflector pulley 13 are provided on the machine base 11.
The elevator hoisting machine 12 includes a hoisting machine motor 14, a hoisting machine brake, not shown, a sheave 15, and an additional sheave device 16.
The hoisting machine motor 14 rotates the sheave 15. The hoisting machine brake holds the sheave 15 in a stationary state. The hoisting machine brake brakes the rotation of the sheave 15. The additional sheave device 16 is attached to the sheave 15 and rotates integrally with the sheave 15.
The additional sheave device 16 is attached to the sheave 15 when the sheave 15 is worn out in the conventional elevator, and is used as a new sheave.
A plurality of suspension bodies 17 are suspended from the traction sheave device 16 and the deflector pulley 13. In fig. 1, only one suspension body 17 is shown. As each suspension 17, a rope or a belt is used.
A car not shown and a counterweight not shown are suspended from the plurality of suspension bodies 17. The car is suspended by a plurality of suspension bodies 17 on one side with respect to the elevator hoisting machine 12. The counterweight is suspended by a plurality of suspension bodies 17 on the other side with respect to the elevator hoisting machine 12.
The car and the counterweight are lifted and lowered in the hoistway by rotating the sheave 15 and the additional sheave device 16.
In addition, in the case of using the elevator hoisting machine 12 as a hoisting device in the installation work of a newly installed elevator, the additional sheave device 16 can be attached to the sheave 15 and used as a temporary sheave. In this case, after the elevator is installed, the traction sheave device 16 is removed from the elevator hoisting machine 12, and the plurality of suspension bodies 17 are wound around the sheave 15.
Fig. 2 is a front view showing the sheave 15 and the additional sheave device 16 of fig. 1. Fig. 3 is a cross-sectional view taken along line III-III of fig. 2.
The sheave apparatus 16 has an annular sheave main body 21 and a plurality of fixing members 22. The additional sheave body 21 covers the outer periphery of the sheave 15 over the entire periphery. A plurality of suspension bodies 17 are suspended from the sheave main body 21.
The plurality of fixing members 22 fix the additional sheave main body 21 to the sheave 15. As each mount 22, a hinge pin (reamer pin) is used. The plurality of fixtures 22 are disposed at equal intervals from each other on the same circumference centered on the rotation center of the sheave 15.
The fixing elements 22 are screwed into the sheave 15 in parallel with the axial direction of the sheave 15. The axial direction of the sheave 15 is a direction parallel to the rotation center line of the sheave 15, i.e., the left-right direction in fig. 3. Furthermore, all the fixing elements 22 are screwed in the same direction relative to the sheave 15.
The sheave main body 21 has a plurality of segments 23 and a plurality of connecting pins 24. The plurality of divided pieces 23 are arranged in a circular shape along the outer periphery of the sheave 15. A plurality of pulley grooves 23a are provided in each of the divided pieces 23. The hanging body 17 is inserted into each pulley groove 23a.
The plurality of connecting pins 24 connect the adjacent divided pieces 23, respectively. Each divided piece 23 is connected to an adjacent divided piece 23 by two connecting pins 24. The coupling pins 24 are parallel to the axial direction of the sheave 15.
Each of the divided pieces 23 is fixed to the sheave 15 by one fixing member 22. Each segment 23 is rotatably coupled to the adjacent segment 23 about two coupling pins 24. However, in a state where the additional sheave main body 21 is attached to the sheave 15 and the divided pieces 23 are fixed to the sheave 15 by the fixing members 22, rotation of each divided piece 23 relative to the adjacent divided piece 23 is restricted.
The attachment sheave main body 21 is released from the connection of any two adjacent divided pieces 23 and is spread into a belt shape in a state of not being attached to the sheave 15. In this state, it can be said that each connecting pin 24 is parallel to the direction corresponding to the axial direction of the sheave 15 when the additional sheave main body 21 is wound around the sheave 15.
When the additional sheave body 21 is attached to the sheave 15, the additional sheave body 21 is wound around the sheave 15 so as to cover the outer periphery of the sheave 15. The divided pieces 23 at both ends are connected to each other by two connecting pins 24, and each divided piece 23 is fixed to the sheave 15 by a fixing member 22.
Fig. 4 is a front view showing the divided piece 23 of fig. 2 in an enlarged manner. Fig. 5 is a side view illustrating the divided piece 23 of fig. 4. Fig. 6 is a plan view illustrating the divided piece 23 of fig. 4.
Each divided piece 23 has a divided piece main portion 23b, a pair of protruding portions 23c, a pair of connecting portions 23d, and a fixing portion 23e.
The split piece main portion 23b overlaps the outer periphery of the sheave 15. The plurality of sheave grooves 23a are provided on the surface of the segment main portion 23b opposite to the sheave 15. The front shape of the segment main portion 23b is an arc shape along the outer periphery of the sheave 15.
The pair of protruding portions 23c protrude radially outward of the sheave main body 21 from the split piece main portion 23 b. That is, the pair of protruding portions 23c protrude from the split piece main portion 23b to the opposite side of the sheave 15. The radial direction of the additional sheave body 21 is a direction perpendicular to the rotation center line of the sheave 15 in a state where the additional sheave body 21 is attached to the sheave 15. Each of the protruding portions 23c is provided with a first pin hole 23f.
The pair of connecting portions 23d protrude from the split piece main portion 23b in the circumferential direction of the sheave main body 21. The circumferential direction of the sheave main body 21 is a direction along a circumference centered on the rotation center of the sheave 15 in a state where the sheave main body 21 is attached to the sheave 15.
Each of the coupling portions 23d overlaps with the outer surface of the protruding portion 23c in the adjacent divided piece 23. Each of the connecting portions 23d is provided with a second pin hole 23g.
Each divided piece 23 is connected to the adjacent divided piece 23 by two connecting pins 24 at a pair of connecting portions 23 d. Each connecting pin 24 is inserted into the first pin hole 23f and the second pin hole 23g.
The fixing portion 23e protrudes radially inward of the sheave main body 21 from the split piece main portion 23 b. The fixing portion 23e is fixed to the sheave 15 by the fixing member 22. The fixing portion 23e is provided with a fixing hole 23h. The fixing member 22 is fixed to the sheave 15 through the fixing member hole 23h.
In such an elevator hoisting machine 12, the traction sheave device 16 has a traction sheave main body 21 and a plurality of fixtures 22. The sheave main body 21 has a plurality of segments 23 and a plurality of connecting pins 24. The plurality of divided pieces 23 are arranged in a circular shape along the outer periphery of the sheave 15. The plurality of connecting pins 24 connect the adjacent divided pieces 23, respectively. Each of the divided pieces 23 is provided with a pulley groove 23a. The coupling pins 24 are parallel to the axial direction of the sheave 15. Each divided piece 23 is rotatably coupled to the adjacent divided piece 23 about two coupling pins 24.
Therefore, after the annular additional sheave body 21 is manufactured in the factory, the additional sheave body 21 can be spread into a belt shape and transported to the site. Further, the additional sheave body 21 can be wound around the outer periphery of the sheave 15 on site to restore the annular shape. This can suppress the displacement of the sheave grooves 23a between the adjacent divided pieces 23.
Each segment 23 is connected to the adjacent segment 23 by two connecting pins 24 at a pair of connecting portions 23 d. Further, the pair of connecting portions 23d in each divided piece 23 overlap with the pair of protruding portions 23c in the adjacent divided piece 23. Therefore, each of the divided pieces 23 can be rotatably coupled to the adjacent divided piece 23, and the displacement of the sheave grooves 23a between the adjacent divided pieces 23 can be more reliably suppressed.
Further, in each segment 23, the fixing portion 23e protrudes radially inward of the additional sheave main body 21 from the segment main portion 23b, and is fixed to the sheave 15 by the fixing piece 22. Therefore, the additional sheave main body 21 can be fixed more firmly to the sheave 15. Thus, even when the additional sheave device 16 rotates, the sheave grooves 23a between the adjacent divided pieces 23 can be more reliably restrained from shifting.
The sheave apparatus 16 of embodiment 1 includes a belt-shaped sheave main body 21 and a plurality of fixtures 22. The sheave main body 21 has a plurality of segments 23 and a plurality of connecting pins 24. The plurality of divided pieces 23 are arranged in a circular shape along the outer periphery of the sheave 15. The plurality of connecting pins 24 connect the adjacent divided pieces 23, respectively. Each of the divided pieces 23 is provided with a pulley groove 23a. The coupling pins 24 are parallel to a direction corresponding to the axial direction of the sheave 15 when the additional sheave body 21 is wound around the sheave 15. Each divided piece 23 is rotatably coupled to the adjacent divided piece 23 about a pair of coupling pins 24.
Therefore, after the annular additional sheave body 21 is manufactured in the factory, the additional sheave body 21 can be spread into a belt shape and transported to the site. Further, the additional sheave body 21 may be formed in an annular shape by being wound around the outer periphery of the sheave 15 in the field. This can suppress the displacement of the sheave grooves 23a between the adjacent divided pieces 23.
Embodiment 2
Next, fig. 7 is a front view showing a state in which the additional sheave device 16 according to embodiment 2 is attached to the sheave 15. Fig. 8 is a cross-sectional view taken along line VIII-VIII of fig. 7. Fig. 9 is a front view of the divided piece 23 of fig. 7 enlarged. Fig. 10 is a side view illustrating the divided piece 23 of fig. 9. Fig. 11 is a plan view showing the divided piece 23 of fig. 9.
A pair of through holes 23i are provided in the fixing portion 23e of each of the divided pieces 23. In each of the divided pieces 23, a pair of through holes 23i are provided at a distance from each other on the same circumference centered on the rotation center of the sheave 15.
The fixing bolts 25 pass through the through holes 23i. The fixing bolts 25 are screwed into the sheave 15 in parallel with the axial direction of the sheave 15. The orientation of each fixing bolt 25 is the same as the orientation of each fixing piece 22.
The additional sheave device 16 also has a plurality of adjustment bolts 26. The number of the adjusting bolts 26 is the same as that of the dividing pieces 23.
A screw hole 23j is provided in the segment main portion 23b of each segment 23 along the radial direction of the sheave main body 21. Each adjusting bolt 26 is screwed into the corresponding screw hole 23j. The tip of each adjusting bolt 26 abuts on the outer periphery of the sheave 15.
Other structures in embodiment 2 are the same as those in embodiment 1.
In the elevator hoisting machine 12 and the sheave apparatus 16, the adjusting bolts 26 are attached to the respective divided pieces 23. Therefore, the positions of the split pieces 23 in the radial direction of the sheave main body 21 can be finely adjusted. This makes it possible to more accurately arrange the additional sheave main body 21 coaxially with respect to the rotation center of the sheave 15.
Further, the eccentric state of the plurality of pulley grooves 23a in each of the divided pieces 23 can be adjusted.
The segments 23 are fixed to the sheave 15 by a fixing member 22 and a pair of fixing bolts 25. Therefore, even when the additional sheave device 16 rotates, the sheave grooves 23a between the adjacent divided pieces 23 can be more reliably restrained from shifting. Further, the load applied to each mount 22 can be reduced.
In embodiment 2, only one of the pair of fixing bolts 25 and the pair of adjusting bolts 26 may be provided for each of the divided pieces 23.
In embodiments 1 and 2, the number of the divided pieces 23 included in the additional sheave main body 21 can be appropriately changed. However, in order to spread the additional sheave body 21 closer to a straight line, the additional sheave body 21 preferably includes four or more divided pieces 23.
The elevator hoisting machine 12 to which the additional sheave device 16 is attached may be a hoisting machine with a speed reducer or a gearless hoisting machine as long as a space for attaching the additional sheave device 16 can be ensured.
The layout of the entire elevator provided with the elevator hoisting machine 12 is not particularly limited. For example, the roping method may be 1:1, the rope winding mode can be 2:1 a rope winding mode.
The elevator may be a machine-room-less elevator, a double-deck elevator, a single-shaft multi-car elevator, or the like. The single-hoistway multi-car system is a system in which an upper car and a lower car disposed directly below the upper car are each independently lifted and lowered in a common hoistway.
Claims (5)
1. An elevator hoisting machine is provided with:
a rope pulley;
a hoisting machine motor that rotates the sheave; and
an additional sheave device attached to the sheave and rotated integrally with the sheave,
the additional sheave device has:
an annular additional sheave body covering the outer periphery of the sheave, the suspension body being suspended from the additional sheave body; and
a plurality of fixing members for fixing the additional sheave main body to the sheave,
the additional sheave body has:
a plurality of divided pieces arranged in a circular shape along the outer circumference of the sheave; and
a plurality of connection pins for connecting the adjacent divided pieces,
a rope wheel groove for the hanging body to be inserted is arranged in each dividing piece,
each of the connecting pins is parallel to the axial direction of the sheave,
each of the divided pieces is rotatably coupled to the adjacent divided piece about the coupling pin.
2. The elevator traction machine according to claim 1, wherein,
each of the divided pieces has:
a main segment part overlapping the outer circumference of the sheave and provided with the sheave groove;
a protruding portion protruding radially outward of the additional sheave main body from the segment main portion; and
a connecting portion protruding from the segment main portion in a circumferential direction of the additional sheave main body, overlapping the protruding portion in the adjacent segment,
each of the divided pieces is coupled to the adjacent divided piece at the coupling portion by the coupling pin.
3. The elevator traction machine according to claim 2, wherein,
each of the divided pieces further has a fixing portion protruding radially inward of the additional sheave main body from the divided piece main portion, and is fixed to the sheave by the fixing member.
4. The elevator traction machine according to any one of claims 1 to 3, wherein,
the additional sheave body is provided with a screw hole along the radial direction of the additional sheave body,
the additional sheave device also has an adjusting bolt threaded into the threaded bore,
the front end of the adjusting bolt is abutted against the periphery of the rope pulley.
5. An additional sheave device is provided with:
a belt-shaped additional sheave main body wound around the sheave so as to cover the outer periphery of the sheave of the elevator hoisting machine, the suspension body being suspended from the additional sheave main body; and
a plurality of fixing members for fixing the additional sheave main body to the sheave,
the additional sheave body has:
a plurality of dividing pieces provided with sheave grooves into which the suspension bodies are inserted and arranged in a circular shape along the outer circumference of the sheave; and
a plurality of connection pins for connecting the adjacent divided pieces,
each of the connecting pins is parallel to a direction corresponding to an axial direction of the sheave when the additional sheave main body is wound around the sheave,
each of the divided pieces is rotatably coupled to the adjacent divided piece about the coupling pin.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2022-092848 | 2022-06-08 | ||
| JP2022092848A JP7237437B1 (en) | 2022-06-08 | 2022-06-08 | Elevator hoist and additional sheave device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117228487A true CN117228487A (en) | 2023-12-15 |
Family
ID=85513836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211169584.6A Pending CN117228487A (en) | 2022-06-08 | 2022-09-22 | Elevator traction machine and additional rope sheave device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7237437B1 (en) |
| CN (1) | CN117228487A (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5279457U (en) * | 1975-12-11 | 1977-06-14 | ||
| JPS59195248U (en) * | 1983-06-13 | 1984-12-25 | 三菱電機株式会社 | Sheave wheel for elevator hoisting device |
-
2022
- 2022-06-08 JP JP2022092848A patent/JP7237437B1/en active Active
- 2022-09-22 CN CN202211169584.6A patent/CN117228487A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JP2023179915A (en) | 2023-12-20 |
| JP7237437B1 (en) | 2023-03-13 |
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