CN109516352B - Elevator counterweight device - Google Patents
Elevator counterweight device Download PDFInfo
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- CN109516352B CN109516352B CN201710853905.7A CN201710853905A CN109516352B CN 109516352 B CN109516352 B CN 109516352B CN 201710853905 A CN201710853905 A CN 201710853905A CN 109516352 B CN109516352 B CN 109516352B
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- counterweight
- cable
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- frame member
- compensation
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- 239000000725 suspension Substances 0.000 claims abstract description 38
- 230000005484 gravity Effects 0.000 claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 15
- 239000010959 steel Substances 0.000 claims abstract description 15
- 238000003466 welding Methods 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 abstract description 8
- 238000012423 maintenance Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/04—Driving gear ; Details thereof, e.g. seals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B17/00—Hoistway equipment
- B66B17/12—Counterpoises
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- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Abstract
The invention discloses an elevator counterweight device, wherein at least two pairs of counterweight guide shoes are respectively arranged on a counterweight frame; the counterweight block is fixedly arranged in the counterweight frame; the suspension steel wire rope and an upper frame member of the counterweight frame are fixedly connected to a hoisting point or connected to the hoisting point through a counterweight wheel; one end of a single compensation chain/cable or one end of two compensation chains/cables with different unit weights is hung on a lower frame member of the counterweight frame; the other ends of the single compensation chain/cable or the two compensation chains/cables with different unit weights are hung on the bottom surface of the lift car; the lifting point is offset from the gravity center line of the counterweight; the suspension point and the suspension point of the single compensation chain/cable on the lower frame member of the counterweight frame are positioned on the same side of the gravity center line of the counterweight; alternatively, the suspension point is located on the same side of the center line of gravity of the counterweight as the suspension point of the heavier one of the two compensation chains/cables having different unit weights on the lower frame member of the counterweight frame. The elevator counterweight device can effectively solve the problem of abrasion of the counterweight guide shoe caused by the unbalanced compensation chain/cable in counterweight configuration.
Description
Technical Field
The invention relates to an elevator traction system, in particular to an elevator counterweight device.
Background
The elevator counterweight is an important component of an elevator traction system, moves up and down along guide rails through guide shoes, and is used for balancing the weight of a car. The elevator compensation system is another important part of the whole system of the elevator, is used for balancing the weight difference of the traction steel wire ropes when the elevator runs up and down, and is generally divided into the following types, namely a chain type, a round cable type, a flat cable type and the like. The two ends of the compensating chain or the compensating cable of the elevator are respectively hung on the car side and the counterweight side, and the up-and-down operation of the elevator can lead the compensating chain or the compensating cable to move up and down along with the up-and-down operation of the elevator.
Because of system configuration requirements, unit weight specifications of the compensation chains/cables, pit danger avoidance space requirements and the like, the elevator is often configured with a single compensation chain/cable or two compensation chains/cables with different unit weights. For a counterweight device, under the condition of configuring the compensation chain/cable, the hoisting point of the steel wire rope is at the gravity center of the counterweight, and the counterweight device can be acted by the unbalanced moment of the compensation chain/cable when running up and down, so that the abrasion of the shoe linings of the diagonal side guide shoes of the counterweight is aggravated, the service life of the shoe linings of the counterweight is reduced, and the maintenance and replacement period of the counterweight shoe linings is greatly shortened.
Disclosure of Invention
The invention aims to provide an elevator counterweight device, which can effectively solve the problem of abrasion of a counterweight guide shoe caused by the unbalanced compensation chain/cable in counterweight configuration.
In order to solve the technical problem, the elevator counterweight device provided by the invention comprises a counterweight frame 1, a counterweight block 4, at least two pairs of counterweight guide shoes 7 and a compensation chain/cable; the counterweight guide shoes 7 are respectively arranged on the counterweight frame 1 and used for moving up and down along the counterweight guide rails; the counterweight block 4 is fixedly arranged in the counterweight frame 1; the suspension steel wire rope and the upper frame member 12 of the counterweight frame 1 are fixedly connected to a hoisting point or connected to the hoisting point through a counterweight wheel; one end of a single compensation chain/cable or one end of two compensation chains/cables with different unit weights is hung on a lower frame member 13 of the counterweight frame 1; the other end of a single compensation chain/cable or the other ends of two compensation chains/cables with different unit weights are hung on the bottom surface of the lift car; the lifting point is offset from the gravity center line of the counterweight;
the suspension point of the single compensation chain/cable on the lower frame member 13 of the counterweight frame 1 is positioned on the same side of the gravity center line of the counterweight; or,
the suspension point of the said heavier compensation chain/cable of the said two compensation chains/cables of different unit weights on the lower frame member 13 of the counterweight frame 1 is on the same side of the counterweight's center of gravity line.
Preferably, the suspension point of the said hoisting point and the lighter compensation chain/cable of the said two compensation chains/cables with different unit weights on the lower frame member 13 of the counterweight frame 1 are located on opposite sides of the gravity center line of the counterweight;
the distance from the suspension point of the lighter compensating chain/cable to the gravity center line of the counterweight is less than or equal to the distance from the suspension point of the heavier compensating chain/cable to the gravity center line of the counterweight.
Preferably, the suspension wire is fixedly connected to the upper frame member 12 of the counterweight frame 1 by means of a diverting pulley.
Preferably, the counterweight frame 1 comprises two side frame members 11, an upper frame member 12 and a lower frame member 13;
the two side frame members 11, the upper frame member 12 and the lower frame member 13 are connected to form the counterweight frame 1 by bolting or welding.
Preferably, two pairs of counterweight guide shoes 7 are mounted on the upper frame member 12 and the lower frame member 13, respectively, for up-and-down movement along the counterweight guide rails.
Preferably, hanger member 6 is secured to the underside of lower frame member 14;
one end of a single compensation chain/cable or one end of two compensation chains/cables with different unit weights is hung on the hanging frame piece 6.
Preferably, a bumper stopper 5 is fixed to a lower middle portion of the lower frame member 13.
Preferably, the counterweight guide shoe 7 is a sliding guide shoe or a roller guide shoe.
The elevator counterweight device of the invention designs a structure that the hoisting point of the hanging steel wire rope and the unbalanced moment of the compensation chain/cable are reversely offset, can slow down the abrasion of the counterweight guide shoe bushing caused by the unbalanced moment generated by the compensation chain or the compensation cable, effectively solves the problem of aggravated abrasion of the counterweight guide shoe caused by the eccentricity of the counterweight when the counterweight is configured with the unbalanced compensation chain/cable left and right, prolongs the service life of the counterweight guide shoe bushing, prolongs the maintenance and replacement period of the counterweight guide shoe, has simple and reliable structure, can flexibly change under the condition of structure permission, and is easy to manufacture and install.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the present invention are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of an embodiment of an elevator counterweight of the present invention;
fig. 2 is a schematic diagram of the force of a single compensating chain/cable suspension point biasing moment configured in one embodiment of the elevator counterweight of the present invention;
fig. 3 is a schematic diagram of the elevator counterweight according to an embodiment of the invention with two compensating chains/cable suspension point biasing moments.
The reference numbers in the figures illustrate:
1 a counterweight frame; 11 side frame members; 12 an upper frame member; 13 a lower frame member;
4 pairs of weights; 5, a buffer bump; 6 a hanger member; 7 counterweight guide shoes.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
As shown in fig. 1, the counterweight device of the elevator comprises a counterweight frame 1, a counterweight block 4, at least two pairs of counterweight guide shoes 7 and a compensating chain/cable;
the counterweight guide shoes 7 are respectively arranged on the counterweight frame 1 and used for moving up and down along the counterweight guide rails;
the counterweight block 4 is fixedly arranged in the counterweight frame 1;
the suspension steel wire rope and the upper frame member 12 of the counterweight frame 1 are fixedly connected to a hoisting point or connected to the hoisting point through a counterweight wheel;
one end of a single compensation chain/cable or one end of two compensation chains/cables with different unit weights is hung on a lower frame member 13 of the counterweight frame 1;
the other end of a single compensation chain/cable or the other ends of two compensation chains/cables with different unit weights are hung on the bottom surface of the lift car;
the lifting point is offset from the gravity center line of the counterweight;
the suspension point of the single compensation chain/cable on the lower frame member 13 of the counterweight frame 1 is positioned on the same side of the gravity center line of the counterweight; or,
the suspension point of the said heavier compensation chain/cable of the said two compensation chains/cables of different unit weights on the lower frame member 13 of the counterweight frame 1 is on the same side of the counterweight's center of gravity line.
The counterweight comprises a counterweight frame 1, a counterweight block 4, a counterweight guide shoe 7 (and a counterweight wheel) and the like.
Preferably, the suspension point of the said hoisting point and the lighter compensation chain/cable of the said two compensation chains/cables with different unit weights on the lower frame member 13 of the counterweight frame 1 are located on opposite sides of the gravity center line of the counterweight;
the distance from the suspension point of the lighter compensating chain/cable to the gravity center line of the counterweight is less than or equal to the distance from the suspension point of the heavier compensating chain/cable to the gravity center line of the counterweight.
Preferably, the suspension wire is fixedly connected to the upper frame member 12 of the counterweight frame 1 by means of a diverting pulley, the hoisting point being the centre of the diverting pulley.
The compensating chains or cables may be of any shape.
In the elevator counterweight device according to the first embodiment, the suspension point of the suspension wire rope is offset from the gravity center line of the counterweight, so that the moment formed by the gravity of the counterweight is balanced or partially balanced with the moment formed by a single compensation chain/cable or two compensation chains/cables with different unit weights; the hoisting point for suspending the steel wire rope refers to a stress point of the steel wire rope or the diversion sheave on the upper frame member 12 of the counterweight frame 1, if a plurality of steel wire ropes can be simplified into a single stress, a single counterweight wheel can be simplified into a wheel center position stress, and a plurality of counterweight wheels can be simplified into a centrosymmetric position stress; the eccentric distance of the suspension point of the suspension steel wire rope needs to be calculated according to conditions such as the lifting height, the configuration condition of a compensation system, the shape of a counterweight and the like.
The elevator counterweight device disclosed by the embodiment has the advantages that the structure that the hoisting point of the hanging steel wire rope and the unbalanced moment of the compensation chain/cable are reversely offset is designed, the abrasion of the counterweight guide shoe bushing caused by the unbalanced moment generated by the compensation chain or the compensation cable can be relieved, the problem of aggravated abrasion of the counterweight guide shoe caused by the eccentricity of the counterweight when the unbalanced compensation chain/cable is configured on the left side and the right side of the counterweight is effectively solved, the service life of the counterweight guide shoe bushing is prolonged, the maintenance and replacement period of the counterweight guide shoe is prolonged, the counterweight device is simple and reliable in structure, can be flexibly changed under the condition allowed by the structure, and is easy to manufacture and install. The elevator counterweight device can be applied to traction elevators with any rope winding ratio.
Example two
According to the elevator counterweight device of the first embodiment, the counterweight frame 1 comprises two side frame members 11, an upper frame member 12 and a lower frame member 13;
the two side frame members 11, the upper frame member 12 and the lower frame member 13 are connected to form the counterweight frame 1 by bolting or welding.
Preferably, two pairs of counterweight guide shoes 7 are mounted on the upper frame member 12 and the lower frame member 3, respectively, for up-and-down movement along the counterweight guide rails.
Preferably, hanger member 6 is fixed to the lower side of said lower frame member 13; one end of a single compensation chain/cable or one end of two compensation chains/cables with different unit weights is hung on the hanging frame piece 6.
Preferably, a bumper stopper 5 is fixed to a lower middle portion of the lower frame member 13.
Preferably, the counterweight guide shoe 7 is a sliding guide shoe or a roller guide shoe.
EXAMPLE III
The lifting point of a single compensation chain/cable is configured to bias the elevator counterweight device, the hanging wire rope lifting point is biased to the right side of the counterweight gravity center line by X, the compensation chain/cable is hung on the right side of the counterweight gravity center line, and the unbalanced moment on the guide shoe 7 of the elevator counterweight device is analyzed as shown in figure 2.
N is the tension of the steel wire rope and the corresponding force arm X;
t1 is the tension of single compensation chain/cable to the counter weight, arm of force is L1;
when NX is T1 × L1, the unbalanced moment disappears;
obtaining X-T1-L1/N;
because the tension T1 of the compensating chain/cable is changed during the up-and-down running of the elevator car, the actual X value can be calculated according to the stress condition of the 1/2 hoisting height position.
Example four
The analysis of the unbalanced moment on the guide shoe of the elevator counterweight device is shown in fig. 3, wherein two compensating chains/cables with different unit weights are arranged, the hanging point of the hanging steel wire rope is offset to the right side of the counterweight gravity center line by X, the compensating chain/cable with the larger unit weight is hung on the right side of the counterweight gravity center line, and the compensating chain/cable with the smaller unit weight is hung on the left side of the counterweight gravity center line.
N is the tension of the steel wire rope and the corresponding force arm X;
t1 is the tension of a single compensating chain/cable with small unit weight to the counterweight, and the moment arm is L1;
t2 is the tension of single compensation chain/cable with large weight unit, the arm of force is L2;
t2> T1;
when NX ═ T2 × L2-T1xL1, the unbalanced moment disappears;
obtaining X ═ (T2 ═ L2-T1 ═ L1)/N;
because the tension T1 and T2 of the compensating chain/cable are changed in the process of the up-down running of the elevator car, the actual X value can be calculated according to the stress condition of the position which is most favorable for moment balance under the actual use working condition of the elevator.
For the asymmetrical structure of the counterweight block or the counterweight frame, the structure of the counterweight can balance the unbalanced moment generated by all or part of the compensation chains/cables, and the problem of aggravated abrasion of the counterweight guide shoes caused by the eccentricity of the counterweight can be effectively solved by combining with the offset suspension of the hoisting point according to the calculation condition of the balanced moment.
The above are merely preferred embodiments of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (7)
1. An elevator counterweight device comprises a counterweight frame (1), a counterweight block (4), at least one pair of counterweight guide shoes (7) and a compensating chain/cable; the counterweight guide shoes (7) are respectively arranged on the counterweight frame (1) and are used for moving up and down along the counterweight guide rails; the counterweight block (4) is fixedly arranged in the counterweight frame (1); the suspension steel wire rope and an upper frame member (12) of the counterweight frame (1) are fixedly connected to a hoisting point or connected to the hoisting point through a counterweight wheel; one end of a single compensation chain/cable or one end of two compensation chains/cables with different unit weights is suspended on a lower frame member (13) of the counterweight frame (1); the other end of a single compensation chain/cable or the other ends of two compensation chains/cables with different unit weights are hung on the bottom surface of the lift car; wherein the lifting point is offset from the center line of gravity of the counterweight;
the suspension point and the suspension point of the single compensation chain/cable on the lower frame member (13) of the counterweight frame (1) are positioned on the same side of the gravity center line of the counterweight; or,
the suspension point of the suspension point and the suspension point of the heavier compensation chain/cable of the two compensation chains/cables with different unit weights on the lower frame member (13) of the counterweight frame (1) are positioned on the same side of the gravity center line of the counterweight;
the suspension point of the suspension point and the lighter compensation chain/cable of the two compensation chains/cables with different unit weights on the lower frame member (13) of the counterweight frame (1) is positioned on the opposite side of the gravity center line of the counterweight;
the distance from the suspension point of the lighter compensating chain/cable to the gravity center line of the counterweight is less than or equal to the distance from the suspension point of the heavier compensating chain/cable to the gravity center line of the counterweight.
2. Elevator counterweight according to claim 1,
the suspension wire rope is fixedly connected to the upper frame member (12) of the counterweight frame (1) via a diverting pulley.
3. Elevator counterweight according to claim 1,
the counterweight frame (1) comprises two side frame members (11), an upper frame member (12) and a lower frame member (13);
the two side frame members (11), an upper frame member (12) and a lower frame member (13) are connected with each other by bolt connection or welding to form the counterweight frame (1).
4. Elevator counterweight according to claim 3,
two pairs of counterweight guide shoes (7) are respectively arranged on the upper frame piece (12) and the lower frame piece (13) and move up and down along the counterweight guide rails.
5. Elevator counterweight according to claim 3,
a hanger piece (6) is fixed on the lower side of the lower frame piece (14);
one end of a single compensation chain/cable or one end of two compensation chains/cables with different unit weights is suspended on the suspension frame piece (6).
6. Elevator counterweight according to claim 3,
and a buffer collision block (5) is fixed in the middle of the lower side of the lower frame piece (13).
7. Elevator counterweight according to claim 3,
the counterweight guide shoe (7) adopts a sliding guide shoe or a roller guide shoe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710853905.7A CN109516352B (en) | 2017-09-20 | 2017-09-20 | Elevator counterweight device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710853905.7A CN109516352B (en) | 2017-09-20 | 2017-09-20 | Elevator counterweight device |
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| Publication Number | Publication Date |
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| CN109516352A CN109516352A (en) | 2019-03-26 |
| CN109516352B true CN109516352B (en) | 2020-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710853905.7A Active CN109516352B (en) | 2017-09-20 | 2017-09-20 | Elevator counterweight device |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110329888A (en) * | 2019-07-16 | 2019-10-15 | 浙江梅轮电梯股份有限公司 | A kind of counterweight frame of adjustable center of gravity |
| CN114735572B (en) * | 2022-02-28 | 2023-06-02 | 上海三菱电梯有限公司 | Counterweight device of elevator |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07315725A (en) * | 1994-05-27 | 1995-12-05 | Hitachi Building Syst Eng & Service Co Ltd | Elevator counterweight |
| CN2646108Y (en) * | 2003-10-13 | 2004-10-06 | 张金陵 | Counterweight driven non machine room elevator of toothless dragging machine |
| JP2005187156A (en) * | 2003-12-25 | 2005-07-14 | Mitsubishi Electric Corp | Elevator |
| CN204297890U (en) * | 2014-12-02 | 2015-04-29 | 南京佳汇科技实业有限公司 | Elevator intelligent dynamic balancer |
| CN106995174A (en) * | 2015-10-15 | 2017-08-01 | 株式会社日立制作所 | Lift appliance |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110061976A1 (en) * | 2009-09-17 | 2011-03-17 | Tiner James L | Battery counterweighted elevator |
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2017
- 2017-09-20 CN CN201710853905.7A patent/CN109516352B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07315725A (en) * | 1994-05-27 | 1995-12-05 | Hitachi Building Syst Eng & Service Co Ltd | Elevator counterweight |
| CN2646108Y (en) * | 2003-10-13 | 2004-10-06 | 张金陵 | Counterweight driven non machine room elevator of toothless dragging machine |
| JP2005187156A (en) * | 2003-12-25 | 2005-07-14 | Mitsubishi Electric Corp | Elevator |
| CN204297890U (en) * | 2014-12-02 | 2015-04-29 | 南京佳汇科技实业有限公司 | Elevator intelligent dynamic balancer |
| CN106995174A (en) * | 2015-10-15 | 2017-08-01 | 株式会社日立制作所 | Lift appliance |
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| CN109516352A (en) | 2019-03-26 |
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