CN117775917B - Method and device for rapidly detecting traction force of steel wire rope traction driving elevator - Google Patents
Method and device for rapidly detecting traction force of steel wire rope traction driving elevator Download PDFInfo
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Abstract
The invention provides a method and a device for rapidly detecting traction force of a steel wire rope traction driving elevator, and belongs to the technical field of elevators. Under the condition of no load, the invention judges whether the traction force is insufficient or not through the sliding distance of the steel wire rope under the running of the elevator and the running height difference of the elevator, if the traction force exceeds the preset threshold value, the traction force is insufficient, and if the traction force is less than or equal to the preset threshold value, the traction force is reliable. The invention can be carried out under the normal running condition of the elevator, and the elevator has no risk of rushing to the top or the bottom of the pier; the elevator is not limited by the height of the elevator, and is applicable to the elevator of a low-rise station; no extra tools are needed, a large number of weights are not needed to be prepared, and manpower and time are saved.
Description
Technical Field
The invention belongs to the technical field of elevators, and particularly relates to a method and a device for rapidly detecting traction force of a steel wire rope traction driving elevator.
Background
At present, an elevator is mainly driven by traction of a steel wire rope, the steel wire rope has a certain wrap angle in a traction sheave, and a rope groove of the traction sheave is generally not semicircular, but is notched, so that larger friction force can be provided, and safety of the elevator under various extreme working conditions is ensured.
Judging whether the traction force is insufficient, and at present, mainly performing the following two tests on site to confirm:
1. no-load ascending emergency stop test
The elevator car is unloaded, and goes upward from the lower end station at a rated speed, and when going upward to the middle upper landing, the elevator is stopped by artificial emergency (such as a brake pulling mode, an emergency stop switch action mode and the like), then whether the elevator is reliably stopped is observed, and the elevator stopping distance is visually checked.
2. Overload downlink emergency stop test
The car is loaded with 125% rated load capacity, then descends from the upper end station at rated speed, when descending to the middle lower landing, stops the elevator by man in an emergency, then observes whether the elevator is reliably stopped, and visualizes the elevator stopping distance.
Both of the above tests can directly reflect the traction capacity of an elevator, but there are some problems:
1. Both of the above tests have some risk of toppling or pier bottom, and in some cases (e.g., severe deviation of balance coefficient, additional decoration of car, etc.) accidents may even occur.
2. When the height of the elevator is small, such as in a 2-landing elevator, the above test is more difficult to handle because it is difficult to control its emergency stop point.
3. The overload test is not easy because a large number of weights are prepared in advance and the handling takes a lot of time and labor.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a method and a device for rapidly detecting the traction force of a steel wire rope traction driving elevator.
The invention provides a method for rapidly detecting the traction force of a steel wire rope traction driving elevator, which comprises the following steps:
S1: marking the traction sheave under no-load conditions;
S2: running the elevator, and measuring the sliding distance of the steel wire rope through the marks on the traction sheave;
s3: verifying the running height difference;
S4: judging whether the traction force is insufficient or not according to the sliding distance of the steel wire rope under the running of the elevator and the running height difference of the elevator, if the sliding distance exceeds a preset threshold value, the traction force is insufficient, and if the sliding distance is smaller than or equal to the preset threshold value, the traction force is reliable.
Preferably, whether the traction force is insufficient is judged by the ratio of the sliding distance of the steel wire rope and the running height difference of the elevator.
Preferably, the wire rope slip distance is measured by the following method: and marking the traction sheave and a steel wire rope tangent to the traction sheave, measuring the distance between the mark on the traction force and the mark on the steel wire rope when the elevator car rises to a certain floor from the original floor and returns to the original floor, and taking the distance as the sliding distance of the steel wire rope.
Preferably, the original floor is the flat position of the bottommost station, is lifted to the highest station, and returns to the flat position of the bottommost station.
Preferably, the method comprises the following steps:
s10, after no load of the elevator car is confirmed, the elevator car is dispatched to the flat layer position of the bottommost station, and then marks are made on a traction sheave and a steel wire rope tangent to the traction force;
S20, dispatching the lift car to the highest landing, and returning to the flat landing position of the lowest landing;
S30, measuring the distance s between the mark on the steel wire rope and the mark on the traction sheave;
S40, checking the height difference h of the running of the lift car;
s50, calculating the ratio delta=s/h of the sliding distance of the steel wire rope and the running height difference of the elevator, and when delta is less than or equal to delta max, indicating that the traction force is reliable; conversely, if Δ > Δmax, where Δmax is a preset threshold, the drag is insufficient.
Preferably, the wire rope slip distance is measured by the following method: and marking the traction sheave and a steel wire rope tangent to the traction sheave, measuring the distance between the mark on the traction force and the mark on the steel wire rope when the elevator car descends to a certain floor from the original floor and returns to the original floor, and taking the distance as the sliding distance of the steel wire rope.
Preferably, the original floor is the highest landing, descends to the level position of the lowest landing, and returns to the highest landing.
Preferably, the method comprises the following steps:
s100, after the empty load of the elevator car is confirmed, the elevator car is dispatched to the highest landing, and then marks are made on a traction sheave and a steel wire rope tangent to the traction force;
s200, dispatching the lift car to a leveling position station of the bottommost station, and returning to the highest floor;
S300, measuring the distance s between the mark on the steel wire rope and the mark on the traction sheave;
s400, checking the height difference h of the running of the lift car;
S500, calculating the ratio delta=s/h of the sliding distance of the steel wire rope and the running height difference of the elevator, and when delta is less than or equal to delta max, indicating that the traction force is reliable; conversely, if Δ > Δmax, where Δmax is a preset threshold, the drag is insufficient.
The invention provides a rapid detection device for traction force of a steel wire rope traction drive elevator, which comprises a processor, wherein the processor executes the steps of any rapid detection method for traction force of the steel wire rope traction drive elevator.
Compared with the prior art, the invention has at least the following beneficial effects:
1. By the method, the traction force of the elevator can be rapidly detected on site.
2. The detection method is carried out under the condition of normal operation of the elevator, and the elevator has no risk of rushing to the top or the bottom of the pier;
3. the method is not limited by the height of the elevator, is applicable to the elevator of a low-rise station, and can be used for detection;
4. the method does not need additional tools or prepare a large number of weights, and saves manpower and time.
5. The method can also be used as a pre-test of a conventional test method, and the safety of a subsequent test can be ensured.
Drawings
FIG. 1 is a schematic illustration of marking according to one embodiment of the invention.
Fig. 2 is a flowchart of a method for rapidly detecting the traction force of a wire rope-traction driven elevator according to an embodiment of the present invention.
Fig. 3 is a flowchart of a method for rapidly detecting the traction force of a wire rope-traction driven elevator according to still another embodiment of the present invention.
Wherein, 1-mark; 2-traction wheels; 3-the ground of a machine room; 4-guide wheels.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The present invention will be described in further detail with reference to the accompanying drawings for a better understanding of the objects, structures and functions of the present invention.
Example 1
The following describes the method for rapidly detecting the traction force of the wire rope traction driving elevator according to an embodiment of the present invention in detail.
The invention provides a method for rapidly detecting the traction force of a steel wire rope traction driving elevator, which comprises the following steps:
S1: marking the traction sheave under no-load conditions;
S2: running the elevator, and measuring the sliding distance of the steel wire rope through the marks on the traction sheave;
s3: verifying the running height difference;
S4: judging whether the traction force is insufficient or not according to the sliding distance of the steel wire rope under the running of the elevator and the running height difference of the elevator, if the sliding distance exceeds a preset threshold value, the traction force is insufficient, and if the sliding distance is smaller than or equal to the preset threshold value, the traction force is reliable.
Example 2
The following describes the method for rapidly detecting the traction force of the wire rope traction driving elevator according to an embodiment of the present invention in detail.
The invention provides a method for rapidly detecting the traction force of a steel wire rope traction driving elevator, which comprises the following steps:
S1: marking the traction sheave under no-load conditions;
S2: running the elevator, and measuring the sliding distance of the steel wire rope through the marks on the traction sheave;
s3: verifying the running height difference;
S4: judging whether the traction force is insufficient or not according to the sliding distance of the steel wire rope under the running of the elevator and the running height difference of the elevator, if the sliding distance exceeds a preset threshold value, the traction force is insufficient, and if the sliding distance is smaller than or equal to the preset threshold value, the traction force is reliable.
And judging whether the traction force is insufficient or not according to the ratio of the sliding distance of the steel wire rope to the elevator running height difference.
Example 3
The following describes the method for rapidly detecting the traction force of the wire rope traction driving elevator according to an embodiment of the present invention in detail.
The invention provides a method for rapidly detecting the traction force of a steel wire rope traction driving elevator, which comprises the following steps:
S1: marking the traction sheave under no-load conditions;
S2: running the elevator, and measuring the sliding distance of the steel wire rope through the marks on the traction sheave;
s3: verifying the running height difference;
S4: judging whether the traction force is insufficient or not according to the sliding distance of the steel wire rope under the running of the elevator and the running height difference of the elevator, if the sliding distance exceeds a preset threshold value, the traction force is insufficient, and if the sliding distance is smaller than or equal to the preset threshold value, the traction force is reliable.
And judging whether the traction force is insufficient or not according to the ratio of the sliding distance of the steel wire rope to the elevator running height difference.
Wherein, the sliding distance of the steel wire rope is measured by the following method: and marking the traction sheave and a steel wire rope tangent to the traction sheave, measuring the distance between the mark on the traction force and the mark on the steel wire rope when the elevator car rises to a certain floor from the original floor and returns to the original floor, and taking the distance as the sliding distance of the steel wire rope.
Example 4
The following describes the method for rapidly detecting the traction force of the wire rope traction driving elevator according to an embodiment of the present invention in detail.
The invention provides a method for rapidly detecting the traction force of a steel wire rope traction driving elevator, which comprises the following steps:
S1: marking the traction sheave under no-load conditions;
S2: running the elevator, and measuring the sliding distance of the steel wire rope through the marks on the traction sheave;
s3: verifying the running height difference;
S4: judging whether the traction force is insufficient or not according to the sliding distance of the steel wire rope under the running of the elevator and the running height difference of the elevator, if the sliding distance exceeds a preset threshold value, the traction force is insufficient, and if the sliding distance is smaller than or equal to the preset threshold value, the traction force is reliable.
And judging whether the traction force is insufficient or not according to the ratio of the sliding distance of the steel wire rope to the elevator running height difference.
Wherein, the sliding distance of the steel wire rope is measured by the following method: and marking the traction sheave and a steel wire rope tangent to the traction sheave, measuring the distance between the mark on the traction force and the mark on the steel wire rope when the elevator car descends to a certain floor from the original floor and returns to the original floor, and taking the distance as the sliding distance of the steel wire rope.
Example 5
The following describes the method for rapidly detecting the traction force of the wire rope traction driving elevator according to an embodiment of the present invention in detail.
The invention provides a method for rapidly detecting the traction force of a steel wire rope traction driving elevator, which comprises the following steps:
S1: marking the traction sheave under no-load conditions;
S2: running the elevator, and measuring the sliding distance of the steel wire rope through the marks on the traction sheave;
s3: verifying the running height difference;
S4: judging whether the traction force is insufficient or not according to the sliding distance of the steel wire rope under the running of the elevator and the running height difference of the elevator, if the sliding distance exceeds a preset threshold value, the traction force is insufficient, and if the sliding distance is smaller than or equal to the preset threshold value, the traction force is reliable.
And judging whether the traction force is insufficient or not according to the ratio of the sliding distance of the steel wire rope to the elevator running height difference.
Wherein, the sliding distance of the steel wire rope is measured by the following method: and marking the traction sheave and a steel wire rope tangent to the traction sheave, measuring the distance between the mark on the traction force and the mark on the steel wire rope when the elevator car rises to a certain floor from the original floor and returns to the original floor, and taking the distance as the sliding distance of the steel wire rope.
The original floor is the flat layer position of the bottommost station, is lifted to the highest station, and returns to the flat layer position of the bottommost station.
Example 6
The following describes the method for rapidly detecting the traction force of the wire rope traction driving elevator according to an embodiment of the present invention in detail.
The invention provides a method for rapidly detecting the traction force of a steel wire rope traction driving elevator, which comprises the following steps:
S1: marking the traction sheave under no-load conditions;
S2: running the elevator, and measuring the sliding distance of the steel wire rope through the marks on the traction sheave;
s3: verifying the running height difference;
S4: judging whether the traction force is insufficient or not according to the sliding distance of the steel wire rope under the running of the elevator and the running height difference of the elevator, if the sliding distance exceeds a preset threshold value, the traction force is insufficient, and if the sliding distance is smaller than or equal to the preset threshold value, the traction force is reliable.
And judging whether the traction force is insufficient or not according to the ratio of the sliding distance of the steel wire rope to the elevator running height difference.
The method specifically comprises the following steps:
s10, after no load of the elevator car is confirmed, the elevator car is dispatched to the flat layer position of the bottommost station, and then marks are made on a traction sheave and a steel wire rope tangent to the traction force;
S20, dispatching the lift car to the highest landing, and returning to the flat landing position of the lowest landing;
S30, measuring the distance s between the mark on the steel wire rope and the mark on the traction sheave;
S40, checking the height difference h of the running of the lift car;
s50, calculating the ratio delta=s/h of the sliding distance of the steel wire rope and the running height difference of the elevator, and when delta is less than or equal to delta max, indicating that the traction force is reliable; conversely, if Δ > Δmax, where Δmax is a preset threshold, the drag is insufficient.
Example 7
The following describes the method for rapidly detecting the traction force of the wire rope traction driving elevator according to an embodiment of the present invention in detail.
The invention provides a method for rapidly detecting the traction force of a steel wire rope traction driving elevator, which comprises the following steps:
S1: marking the traction sheave under no-load conditions;
S2: running the elevator, and measuring the sliding distance of the steel wire rope through the marks on the traction sheave;
s3: verifying the running height difference;
S4: judging whether the traction force is insufficient or not according to the sliding distance of the steel wire rope under the running of the elevator and the running height difference of the elevator, if the sliding distance exceeds a preset threshold value, the traction force is insufficient, and if the sliding distance is smaller than or equal to the preset threshold value, the traction force is reliable.
And judging whether the traction force is insufficient or not according to the ratio of the sliding distance of the steel wire rope to the elevator running height difference.
The method specifically comprises the following steps:
s100, after the empty load of the elevator car is confirmed, the elevator car is dispatched to the highest landing, and then marks are made on a traction sheave and a steel wire rope tangent to the traction force;
s200, dispatching the lift car to a leveling position station of the bottommost station, and returning to the highest floor;
S300, measuring the distance s between the mark on the steel wire rope and the mark on the traction sheave;
s400, checking the height difference h of the running of the lift car;
S500, calculating the ratio delta=s/h of the sliding distance of the steel wire rope and the running height difference of the elevator, and when delta is less than or equal to delta max, indicating that the traction force is reliable; conversely, if Δ > Δmax, where Δmax is a preset threshold, the drag is insufficient.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.
Claims (9)
1. The quick detection method for the traction force of the elevator driven by the traction of the steel wire rope is characterized by comprising the following steps of:
s1: under the no-load condition, marking on the traction sheave and a steel wire rope tangent to the traction sheave;
s2: running the elevator, and measuring the sliding distance of the steel wire rope through the traction sheave and marks on the steel wire rope;
s3: verifying the running height difference of the lift car;
S4: judging whether the traction force is insufficient or not according to the sliding distance of the steel wire rope under the running of the elevator and the running height difference of the elevator, if the sliding distance exceeds a preset threshold value, the traction force is insufficient, and if the sliding distance is smaller than or equal to the preset threshold value, the traction force is reliable.
2. The method for rapidly detecting the traction force of a wire rope traction drive elevator according to claim 1, wherein whether the traction force is insufficient is judged by a ratio of a wire rope sliding distance to an elevator running height difference.
3. The rapid detection method of the traction force of a wire rope traction drive elevator according to claim 2, wherein the wire rope slip distance is measured by the following method: and marking the traction sheave and a steel wire rope tangent to the traction sheave, measuring the distance between the mark on the traction sheave and the mark on the steel wire rope when the elevator car is lifted to a certain floor from the original floor and then returns to the original floor, and taking the distance as the sliding distance of the steel wire rope.
4. The method for rapidly detecting the traction force of the steel wire rope traction drive elevator according to claim 3, wherein the original floor is the flat layer position of the bottommost layer station, is lifted to the highest layer station, and is returned to the flat layer position of the bottommost layer station.
5. The method for rapidly detecting the traction force of the steel wire rope traction drive elevator according to claim 4, comprising the steps of:
s10, after no load of the elevator car is confirmed, the elevator car is dispatched to the flat layer position of the bottommost station, and then marks are made on a traction sheave and a steel wire rope tangent to the traction force;
S20, dispatching the lift car to the highest landing, and returning to the flat landing position of the lowest landing;
S30, measuring the distance s between the mark on the steel wire rope and the mark on the traction sheave;
S40, checking the height difference h of the running of the lift car;
s50, calculating the ratio delta=s/h of the sliding distance of the steel wire rope and the running height difference of the elevator, and when delta is less than or equal to delta max, indicating that the traction force is reliable; conversely, if Δ > Δmax, where Δmax is a preset threshold, the drag is insufficient.
6. The rapid detection method of the traction force of a wire rope traction drive elevator according to claim 2, wherein the wire rope slip distance is measured by the following method: and marking the traction sheave and a steel wire rope tangent to the traction sheave, measuring the distance between the mark on the traction force and the mark on the steel wire rope when the elevator car descends to a certain floor from the original floor and returns to the original floor, and taking the distance as the sliding distance of the steel wire rope.
7. The method for rapidly detecting the traction force of the elevator driven by the traction of the steel wire rope according to claim 6, wherein the original floor is the highest landing, and the elevator is lowered to the flat landing position of the lowest landing and returned to the highest landing.
8. The method for rapidly detecting the traction force of the wire rope traction drive elevator according to claim 7, comprising the steps of:
s100, after the empty load of the elevator car is confirmed, the elevator car is dispatched to the highest landing, and then marks are made on a traction sheave and a steel wire rope tangent to the traction force;
s200, dispatching the lift car to a leveling position station of the bottommost station, and returning to the highest floor;
S300, measuring the distance s between the mark on the steel wire rope and the mark on the traction sheave;
s400, checking the height difference h of the running of the lift car;
S500, calculating the ratio delta=s/h of the sliding distance of the steel wire rope and the running height difference of the elevator, and when delta is less than or equal to delta max, indicating that the traction force is reliable; conversely, if Δ > Δmax, where Δmax is a preset threshold, the drag is insufficient.
9. A rapid detection device for the traction force of a wire rope traction driven elevator, characterized by comprising a processor, wherein the processor executes the steps of the rapid detection method for the traction force of the wire rope traction driven elevator according to any one of claims 1 to 8.
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| CN202410212685.XA CN117775917B (en) | 2024-02-27 | 2024-02-27 | Method and device for rapidly detecting traction force of steel wire rope traction driving elevator |
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| CN202410212685.XA CN117775917B (en) | 2024-02-27 | 2024-02-27 | Method and device for rapidly detecting traction force of steel wire rope traction driving elevator |
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| CN218403215U (en) * | 2022-10-14 | 2023-01-31 | 北京中海物业管理有限公司 | Elevator towline tension detection device |
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