CN217102602U - Rope hoisting device of elevator - Google Patents
Rope hoisting device of elevator Download PDFInfo
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- CN217102602U CN217102602U CN202121760829.3U CN202121760829U CN217102602U CN 217102602 U CN217102602 U CN 217102602U CN 202121760829 U CN202121760829 U CN 202121760829U CN 217102602 U CN217102602 U CN 217102602U
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- rope
- spring
- spring seat
- insertion hole
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Abstract
The utility model relates to a rope hoist device of elevator, it can carry out automatic adjustment with the mode that makes the tension of a plurality of ropes invariable. The rope hoisting device of an elevator comprises: a hoisting plate having rope end insertion holes through which the ends of the plurality of ropes are inserted, respectively; a spring, one end of which is clamped at the end part of each rope at one side of the hoisting plate; and a spring seat provided between the other end of the spring and the hoisting plate, the surface of the rope end insertion hole being inclined so as to widen the diameter of the spring side, the spring seat having an inclined surface along the surface of the rope end insertion hole on a side surface thereof and a part of the spring seat entering the rope end insertion hole, the amount of entry into the rope end insertion hole being changed in accordance with a change in tension of the rope.
Description
Technical Field
The utility model relates to a rope hoist device of elevator.
Background
A structure is known in which a plurality of ropes connect a lifting body such as a car and a counterweight (C/W) to each other in a lifting path of an elevator.
The end parts (hoists) of the ropes are fixed on the lifting body or the main body structure through springs. When the tension of each rope is not uniform, the load applied to a specific rope may be biased, which may hinder the durability.
Therefore, it is required to adjust the tension of each of the plurality of ropes.
However, it takes man-hours to adjust the tension of a plurality of ropes, respectively, and there is a problem that it is difficult to adjust the tension because a spring attached to each rope has a manufacturing tolerance.
SUMMERY OF THE UTILITY MODEL
An object of the present embodiment is to provide a rope hoist apparatus for an elevator, which can automatically adjust the tension of a plurality of ropes so as to be constant.
One embodiment is an elevator rope hoisting device including: a hoisting plate having rope end insertion holes through which the ends of the plurality of ropes are inserted, respectively; a spring having one end thereof locked to each of the rope end portions on one side of the hoisting plate; and a spring seat provided between the other end of the spring and the hoisting plate, a surface of the rope end insertion hole being inclined so as to widen a diameter of the spring side, the spring seat having an inclined surface along the surface of the rope end insertion hole on a side surface thereof and a portion of the spring seat entering the rope end insertion hole, the amount of entry into the rope end insertion hole being changed in accordance with a change in tension of the rope.
In the rope hoisting device for an elevator according to the present embodiment, the rope end insertion hole and the spring seat may have a truncated cone shape, and the amount of entry of the spring seat into the rope end insertion hole may be changed by elastic deformation.
In the rope hoisting device of an elevator of the present embodiment, the spring seat may be hollow, and a band-shaped cut along a side line may be formed in the side surface.
Another embodiment is an elevator rope hoisting device including: a spring having one end thereof locked to each of the rope ends of the plurality of ropes; the spring seats are used for inserting the end parts of the ropes and are arranged at the other ends of the springs; a frame, the inner periphery of which is provided with spring seats in an arrangement manner; and a moving member provided so that a part thereof enters between the spring seats and freely moves between the spring seats, wherein a surface of the moving member in the arrangement direction of the spring seats is inclined so as to widen a width of the spring seats, and a surface of the moving member facing the spring seats is an inclined surface along the surface in the arrangement direction of the spring seats.
In the rope hoisting device of an elevator according to the present embodiment, the moving member may have an engaging portion that engages with opposing side portions of the frame, and an engaged portion that engages with the engaging portion so as to be movable in the arrangement direction of the spring seats may be provided on the side portions of the frame.
In the rope hoisting device for an elevator of the present embodiment, the engaging portion may be a convex portion, and the engaged portion may be a groove.
According to the utility model discloses a rope hoist device of elevator of embodiment, it can carry out automatic adjustment with the mode that makes the tension of a plurality of ropes invariable.
Drawings
Fig. 1 is a side view showing a schematic structure of an elevator.
Fig. 2 is a vertical cross-section of the rope hoist according to the first embodiment shown upside down.
Fig. 3 is a perspective view of the spring seat shown in fig. 1.
Fig. 4 is a perspective view of the rope hoist according to the second embodiment, partially cut out, and turned upside down.
Fig. 5 is a longitudinal sectional view showing a part of the rope hoist shown in fig. 4.
Fig. 6 is a top view of the rope hoist shown in fig. 4.
Fig. 7 is a side view showing a schematic structure of another elevator.
Detailed Description
[ first embodiment ]
An elevator 1 according to the embodiment will be described below with reference to the drawings, but first, a first embodiment will be described with reference to fig. 1 to 3.
As shown in fig. 1, an elevator 1 according to the first embodiment is a 1:1 rope elevator. The elevator 1 is provided with an elevator car 8 that ascends and descends in the hoistway 5, a counterweight 9, and a rope 10 wound around the hoisting machine 3, one end side of the rope 10 is connected to the elevator car 8 by the rope hoist 6, and the other end side of the rope 10 is also connected to the counterweight 9 by the rope hoist 6. Although not shown, a plurality of ropes 10 are arranged in a row.
Since the hoisting devices have the same structure, one rope hoisting device 6 will be described below.
As shown in fig. 2, the rope hoist 6 includes a hoisting plate 11, a spring 13, and a spring seat 15. The rope end 10a of each rope 10 is a shocklerod (shacklerod).
The hoisting plate 11 is formed with rope end insertion holes 17 through which the plurality of rope ends 10a are inserted, and the rope end insertion holes 17 are arranged in a row. In fig. 2, the end portions 10a of 3 ropes 10 are shown, but this is only an example, and the number of ropes 10 is not limited to 3, and may be 6 or 7.
The surface 17a of the rope end insertion hole 17 is an inclined surface 17a in which the diameter M1 on the spring 13 side is larger than the diameter M2 on the opposite side. In this embodiment, the surface 17a is formed in a truncated cone shape in which the diameter of the spring 13 side is increased.
The spring 13 is a compression coil spring, and is interposed between the one end side spring abutting plate 19a and the other end side spring abutting plate 19 b. The rope end portion 10a is inserted through the one end side spring abutting plate 19a, the other end side spring abutting plate 19b, and the spring 13, respectively.
The one end side spring abutting plate 19a is pressed by a nut 21 screwed to the rope end 10a on the opposite side of the spring 13, and the one end 13a of the spring 13 abuts against the one end side spring abutting plate 19a and is stopped.
The other end 13b of the spring 13 abuts on the other end side spring abutting plate 19 b.
The spring seat 15 has an inclined surface 15a along a surface 17a of the rope end insertion hole 17, and as shown in fig. 3, is formed in a truncated cone shape as a whole in the same manner as the rope end insertion hole 17.
The spring seat 15 has elasticity, and is formed by, for example, forming a steel plate having elasticity into a truncated cone shape and forming a strip-shaped notch 16 along a side line on a side surface. The spring seat 15 is free to elastically deform so as to reduce the width h of the slit 16.
As shown in fig. 2, the spring seat 15 is provided between the spring 13 and the hoisting plate 11, and a small diameter portion (a part) 15b side of the spring seat 15 is inserted into the rope end portion insertion hole 17.
The large diameter portion 15c of the spring seat 15 protrudes from the rope end insertion hole 17 and abuts against the other end side spring abutting plate 19 b.
Next, an operation of the rope hoist apparatus 6 according to the first embodiment will be described.
In the rope hoist 6, when the tension of each rope 10 is set, the nut 21 is tightened with a predetermined load and set to a predetermined tension.
In this case, the tension of each rope 10 is set by the amount of compression of the spring 13 and the amount by which the spring seat 15 is elastically deformed to sink into the rope end insertion hole 17.
Therefore, when there is a manufacturing tolerance in the spring 13, the amount of sinking of the spring seat 15 varies accordingly. For example, when the elasticity of the spring 13 is stronger than the predetermined elasticity, the amount of sinking of the spring seat 15 is small, and when the elasticity of the spring 13 is weaker than the predetermined elasticity, the amount of sinking of the spring seat 15 is large.
As described above, if the tightening force of the nut 21 is made constant, even if there is a manufacturing tolerance in the spring 13, the tension of each rope 10 can be set to a uniform tension.
When a load is applied to a specific rope 10 due to the variation in the amount of tension of the rope 10, for example, when a large load is applied (when the rope is relatively contracted), the rope end portion 10a is pulled (pulled downward in fig. 2) in accordance with the load and is displaced, thereby further compressing the spring 13.
When receiving the force of the spring 13 due to further compression, the spring seat 15 is pressed against the surface 17a of the rope end insertion hole 17, elastically deformed, and deeply sunk into the rope end insertion hole 17 of the hoisting plate 11. In this case, the spring seat 15 is elastically deformed so as to reduce the width h of the slit 16.
The spring seat 15 is deeply sunk into the rope end insertion hole 17 of the lifting plate 11, and accordingly, the compression amount of the spring 13 is reduced.
Therefore, when the rope 10 (see fig. 1) receives a load larger than a predetermined tension, the spring 13 is compressed, but the spring seat 15 sinks with respect to the hoisting plate 11, whereby the tension set by the spring 13 and the spring seat 15 can be maintained.
On the other hand, when the load is small (when the rope is relatively stretched), the spring 13 is stretched, but the spring 15 that has elastically deformed and sunk into the hoisting plate 11 is elastically restored, and is deformed so as to increase the width h (see fig. 3) of the narrowed notch 16, and the amount of sinking of the spring seat 15 is reduced, so that the tension set by the spring 13 and the spring seat 15 is maintained.
The effects of the first embodiment will be described.
According to the first embodiment, the tension of the rope 10 is applied by the spring 13 and the spring seat 15 whose amount of sinking with respect to the hanging plate 11 changes according to the change in the rope tension, and therefore even if the spring 13 has a manufacturing tolerance, a uniform rope tension can be applied to a plurality of ropes.
When a load is applied to a specific rope 10 (see fig. 1), although the expansion and contraction of the spring 13 change, the amount of sinking of the spring seat 15 with respect to the hoisting plate 11 changes accordingly, and therefore the tension set by the spring 13 and the spring seat 15 can be maintained, and thus the plurality of ropes 10 can be automatically adjusted to uniform tension without variation.
Since the shape of the rope end insertion hole 17 and the spring seat 15 inserted therein is a truncated cone shape, the structure is simple and the manufacturing is easy.
The strip-shaped notch 16 is formed in the spring seat 15, so that elastic deformation of the spring seat 15 can smoothly occur with a simple configuration.
In the embodiments described below, the same reference numerals are given to portions that exhibit the same operational effects as those of the first embodiment described above, and detailed descriptions of the portions are omitted, and points that are different from the first embodiment mainly will be described below.
[ second embodiment ]
A rope hoist apparatus 6 according to a second embodiment of the present invention will be described with reference to fig. 4 to 6.
As shown in fig. 4, in the second embodiment, the rope hoist 6 includes a spring 13, a spring seat 15, a frame 31, and a moving member 33.
As shown in fig. 6, the frame 31 has a square shape in plan view, the spring seats 15 and the moving members 33 are arranged in line at the inner periphery, and the spring seats 15 and the moving members 33 are alternately arranged in the line direction.
Further, in the second embodiment, the case where three spring seats 15 are provided is shown as in the first embodiment, but the present invention is not limited to this, and a larger number may be provided depending on the number of ropes 10.
As shown in fig. 4 and 6, in the frame 31, engaged portions 35 that guide the movement of the spring seats 15 are formed on side portions 31a and 31a that face each other in the arrangement direction of the spring seats 15. The engaged portion 35 is a groove.
As shown in fig. 5, the spring seat 15 is rectangular in plan view, and has longitudinal sections in the form of isosceles trapezoids with the long sides facing each other serving as inclined surfaces 15 a.
The opposed inclined surfaces 15a, 15a of the spring seat 15 are inclined surfaces such that the distance W1 on the spring 13 side is larger than the distance W2 on the opposite side of the spring 13, and the inclined directions of the opposed inclined surfaces 15a, 15a are opposite to each other.
The surface of the moving member 33 facing the inclined surface 15a of the spring seat 15 is an inclined surface 33a inclined in the same manner as the inclined surface of the spring seat 15, and the vertical cross section is an isosceles trapezoid, but the trapezoid is a trapezoid in which the width T1 on the spring seat 15 side is smaller than the width T2 on the opposite side of the spring seat 15.
As shown in fig. 4 and 6, the moving member 33 is provided with an engaging portion 37 that engages with the engaged portion 35 of the frame 31. The engaging portion 37 is a projection that is engaged with the groove of the engaged portion 35 so as to be movable in the arrow a direction (see fig. 5 and 6).
As shown in fig. 5, the inner peripheral surface of the frame 31 is formed with an inclined surface 31b facing the inclined surface 15a of the spring seat 15 and an inclined surface (not shown in the second embodiment) facing the moving member 33, which are the same as the inclined surface 31b of the spring seat and the inclined surface 33a of the moving member 33.
A slider having a small friction coefficient such as teflon (registered trademark) is provided on each of the surfaces of the spring seat 15 facing the inclined surfaces such as the inclined surface 15a and the inclined surface 33a of the moving member 33, or a roller is provided on one surface to improve the sliding property between them.
In the second embodiment, the other end side spring abutting plate 19b provided in the first embodiment is not provided, and the other end 13b of the spring 13 is directly received by the spring seat 15.
Next, the operation of the second embodiment will be explained.
As shown in fig. 4 and 5, in the rope hoist 6, when the rope tension of each rope 10 is set, the nut 21 is tightened with a predetermined load and set to a predetermined tension.
In this case, although the tension of each rope 10 is set by the amount of compression of the spring 13 and the amount by which the spring seat 15 sinks between the moving members 33 or between the moving members 33 and the frame 31, when the spring seat 15 sinks deeply, the adjacent moving members 33 move in the direction in which they expand (the direction of arrow a).
Therefore, when there is a manufacturing tolerance in the spring 13, the amount of sinking of the spring seat 15 varies accordingly. For example, when the spring 13 has a strong elasticity, the spring seat 15 is depressed more, and the left and right moving members 33 are moved to expand, but the adjacent spring seats 15 are floated by this. However, since the adjacent spring seats 15 sink the spring seats 15 by the biasing force of the springs 13 and the adjacent moving members 33 are pressed in opposite directions, the moving members 33 stay at positions where the forces acting on the left and right spring seats 15 are balanced, and the amount of sinking of the spring seats 15 is adjusted.
As described above, if the fastening force of the nut 21 is made constant, even if there is a manufacturing tolerance in the spring 13, the amount of sinking of the spring seat 15 can be changed in accordance with the manufacturing tolerance, and the tension of each rope 10 can be set to a uniform tension.
When a load is applied to the specific rope 10 due to the variation in the amount of tension of the rope 10, for example, when a large load is applied (when the rope contracts relatively), the rope end portion 10a is pulled in accordance with the load, the spring seat 15 sinks, and the left and right moving members 33 move in the expanding direction in accordance with the load, but the left and right spring seats 15 are biased in the direction of pressing the moving members 33 against the spring seat 15 of the specific rope 10, and therefore the moving members 33 stay at positions where the forces applied to the spring seats 15 are balanced.
Therefore, when the specific rope 10 (see fig. 1) receives a load larger than a predetermined tension, the spring 13 is compressed, but the spring seat 15 of the specific rope 10 moves the moving member 33 so as to be pushed open, but the adjacent moving members 33 receive forces in opposite directions from the other adjacent spring seats 15, and they are balanced, so that uniform tension can be applied.
On the other hand, when the load of the specific rope 10 is small (when the rope is relatively stretched), the spring seats 15 of the specific rope float from between the moving members 33 and the left and right moving members 33 are narrowed, but in this case, similarly to the case where the load is large, the moving members are stopped at positions where the tensions of all the spring seats 15 are balanced, and therefore uniform tension is applied.
The effect of the second embodiment will be explained.
In the second embodiment as well, as in the first embodiment, the tension of the rope 10 is applied by the spring seat 15 in which the amount of sinking between the spring 13 and the moving member 33 varies, and therefore even rope tension can be applied even if there are manufacturing tolerances in the spring 13.
When a load is applied to a specific rope 10 (see fig. 1), although the expansion and contraction of the spring 13 of the specific rope 10 change, the amount of sinking of the spring seat 15 of the specific rope 10 relative to the moving member 33 changes accordingly, and thus uniform tension without variation can be automatically adjusted for a plurality of ropes.
The above embodiments are provided as examples, and are not intended to limit the scope of the present invention. These novel embodiments can be implemented in other various forms, and various omissions, substitutions, and changes can be made without departing from the spirit of the present invention. The embodiments and modifications thereof are included in the scope and spirit of the invention, and are included in the scope of the invention described in the claims and the equivalents thereof.
For example, as shown in fig. 7, in the case of a 1:2 rope elevator, the rope hoist 6 may be attached to the main structure K.
In the first embodiment, the spring seat 15 and the rope end insertion hole 17 are not limited to the conical frustum shape, and may be polygonal frustums such as quadrangular frustums as long as they have the inclined surfaces 15a and 17a having the same inclination.
The notch 16 is not limited to the notch formed in the inclined surface (side surface) 15a of the spring seat 15, and may not be formed as long as it is made of a material that elastically deforms, such as a resin material or rubber.
Claims (3)
1. A rope hoist device for an elevator, comprising:
a hoisting plate having rope end insertion holes through which the ends of the plurality of ropes are inserted, respectively;
a spring having one end thereof locked to each of the rope end portions on one side of the hoisting plate; and
a spring seat arranged between the other end of the spring and the hoisting plate,
the surface of the rope end insertion hole is inclined so as to widen the diameter of the spring side,
the spring seat has an inclined surface along the surface of the rope end insertion hole on a side surface thereof, and a part of the spring seat enters the rope end insertion hole, and the amount of entry into the rope end insertion hole changes according to a change in tension of the rope.
2. Rope hoisting device of an elevator according to claim 1,
the rope end insertion hole and the spring seat are in a truncated cone shape, and the amount of the spring seat entering the rope end insertion hole changes through elastic deformation.
3. Rope hoisting device of an elevator according to claim 2,
the spring seat is hollow, and a strip-shaped notch along a lateral line is formed in the side face of the spring seat.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020-135846 | 2020-08-11 | ||
| JP2020135846A JP7043552B2 (en) | 2020-08-11 | 2020-08-11 | Elevator rope hitch device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217102602U true CN217102602U (en) | 2022-08-02 |
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ID=80349781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121760829.3U Active CN217102602U (en) | 2020-08-11 | 2021-07-30 | Rope hoisting device of elevator |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7043552B2 (en) |
| CN (1) | CN217102602U (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008120545A (en) | 2006-11-14 | 2008-05-29 | Toshiba Elevator Co Ltd | Rope fixing device |
| KR101861139B1 (en) * | 2016-04-26 | 2018-05-29 | (주)모든엘리베이터 | Rope tension control equipment for elevator |
| CN206457139U (en) | 2016-11-28 | 2017-09-01 | 日立电梯（中国）有限公司 | Termination mechanism, drag device and the elevator of elevator rope |
-
2020
- 2020-08-11 JP JP2020135846A patent/JP7043552B2/en active Active
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2021
- 2021-07-30 CN CN202121760829.3U patent/CN217102602U/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP2022032250A (en) | 2022-02-25 |
| JP7043552B2 (en) | 2022-03-29 |
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