CN112830360A - Testing device and testing method for elevator car uplink overspeed protection - Google Patents
Testing device and testing method for elevator car uplink overspeed protection Download PDFInfo
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- CN112830360A CN112830360A CN202110215193.2A CN202110215193A CN112830360A CN 112830360 A CN112830360 A CN 112830360A CN 202110215193 A CN202110215193 A CN 202110215193A CN 112830360 A CN112830360 A CN 112830360A
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- counterweight
- car
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- overspeed protection
- speed
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- 238000012360 testing method Methods 0.000 title claims abstract description 66
- 230000001174 ascending effect Effects 0.000 claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 15
- 239000010959 steel Substances 0.000 claims abstract description 15
- 238000010998 test method Methods 0.000 claims abstract description 4
- 230000001133 acceleration Effects 0.000 claims description 8
- 239000000725 suspension Substances 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 4
- 230000002457 bidirectional effect Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000001237 Raman spectrum Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000001819 mass spectrum Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
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- 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
- B66B5/048—Testing of overspeed governor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/28—Buffer-stops for cars, cages, or skips
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The invention provides a test device and a test method for elevator car ascending overspeed protection, which comprises at least two guide wheels arranged at intervals in the horizontal direction, wherein a steel wire rope is hung on the guide wheels, and the two ends of the steel wire rope respectively suspend a car and a counterweight. The car is connected with the speed limiter, the steel wire rope and/or the car is provided with an overspeed protection device, and the overspeed protection device is in signal connection with the speed limiter. The hoisting device is suitable for hoisting the counterweight to a test height and releasing the counterweight at the test height so as to drive the lift car to move upwards. The accelerating device is arranged below the counterweight, and when the accelerating device and the counterweight descend, the accelerating device is separated from the counterweight before the lift car reaches the limited speed of the speed governor. By arranging the accelerating device, the acting force for driving the car to move upwards is increased, so that the car can quickly reach the required test speed within the limited ascending distance. Meanwhile, the lift car is separated from the counterweight before reaching the test speed, so that the interference on the test result is avoided, the method is simple and feasible, and the requirements of different test speeds are met in a limited space.
Description
Technical Field
The invention relates to the technical field of detection, in particular to a testing device and a testing method for elevator car ascending overspeed protection.
Background
According to the requirements of elevator standard GB7588 Elevator manufacturing and installation safety standard and TSG T7007-2016 Elevator type test rule, the elevator car ascending overspeed protection device is an elevator safety protection device and needs to be subjected to type test.
The test of the elevator car ascending overspeed protection device is generally carried out on a test tower by adopting a 'sliding method', and during the test, the principle that the counterweight side is heavier than the unloaded car side is generally utilized, the test car frame (simulation car) is pulled to move upwards in an overspeed manner by sliding the car downwards and upwards, and when the limited speed of the car ascending overspeed protection device is reached, the ascending overspeed protection device is triggered, and the test car frame is stopped.
However, the height of the effective test interval of the test tower limits the test speed of the car up overspeed protection device that can be performed. When the test speed of the applied car ascending overspeed protection device is higher, the effective height of the test tower cannot meet the test requirement.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defect that in the prior art, the Raman spectrum detection and the mass spectrum detection of the same liquid sample can only be respectively sampled and detected.
Therefore, the invention provides a test device for the up overspeed protection of an elevator car, which comprises:
at least two guide wheels which are arranged at intervals in the horizontal direction; the steel wire rope is hung on the guide wheel, and the two ends of the steel wire rope respectively suspend the lift car and the counterweight; the car is connected with a speed limiter; an overspeed protection device is arranged on the steel wire rope and/or the lift car; the overspeed protection device is in signal connection with the speed limiter;
the hoisting device is suitable for hoisting the counterweight to a test height and releasing the counterweight at the test height so as to drive the lift car to move upwards;
an accelerator disposed below the counterweight; when the accelerating device descends with the counterweight, the accelerating device is separated from the counterweight before the car reaches the limited speed of the speed limiter.
The accelerating device is connected with the counterweight through a flexible hanging strip.
Further comprising:
a first buffer disposed on the acceleration device and between the counterweight and the acceleration device.
Further comprising:
and the second buffer is arranged on the ground and is positioned right below the accelerating device.
The acceleration device includes:
a cage having a placement space;
and the balancing weights are suitable for being placed into and limited in the placing space.
The balancing weight is a weight.
The hoisting device comprises a pulley block and a winch which are arranged in a linkage manner through a hoisting rope;
a movable pulley in the pulley block is provided with a lifting hook; the counterweight is hung on the lifting hook through a traction rope; the winch is suitable for driving the pulley block to hoist the counterweight and the accelerating device.
The overspeed protection device is a brake, a rail clamping device or a bidirectional safety gear.
The invention provides a test method for elevator car up overspeed protection, which comprises the following steps:
step one, calculating the ascending height of a lift car according to the speed limiter limiting speed required by the test, calculating the weight of a balancing weight required to be added according to the total mass of a system required by the test, and adding the balancing weight with corresponding weight into a suspension cage;
step two, setting the length of the flexible sling to ensure that the accelerating device contacts the ground before the lift car reaches the limited speed of the speed limiter when the accelerating device and the counterweight descend so as to be separated from the counterweight;
thirdly, the hoisting machine drives the lifting hook to move downwards, and then the counterweight is hooked and lifted upwards to the test height;
and step four, releasing the lifting hook, quickly dropping the counterweight and the accelerating device together, dragging the car to quickly ascend, after the accelerating device contacts the ground, continuously accelerating the car to ascend under the dragging of the counterweight until the car reaches the limited speed of the speed limiter, and at the moment, triggering the overspeed protection device by the speed limiter to finish the test of the ascending overspeed protection of the car.
The technical scheme of the invention has the following advantages:
1. the invention provides a test device for elevator car ascending overspeed protection, which comprises at least two guide wheels arranged at intervals in the horizontal direction, wherein a steel wire rope is hung on the guide wheels, and the two ends of the steel wire rope respectively suspend a car and a counterweight. The car is connected with the speed limiter, the steel wire rope and/or the car is provided with an overspeed protection device, and the overspeed protection device is in signal connection with the speed limiter. The hoisting device is suitable for hoisting the counterweight to a test height and releasing the counterweight at the test height so as to drive the lift car to move upwards. The accelerating device is arranged below the counterweight, and when the accelerating device and the counterweight descend, the accelerating device is separated from the counterweight before the lift car reaches the limited speed of the speed governor. By arranging the accelerating device, the acting force for driving the car to move upwards is increased, so that the car can quickly reach the required test speed within the limited ascending distance. Meanwhile, the lift car is separated from the counterweight before reaching the test speed, so that the interference on the test result is avoided, the method is simple and feasible, and the requirements of different test speeds are met in a limited space.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Description of reference numerals:
11. a guide wheel; 12. a wire rope; 13. a counterweight; 14. a car; 2. a speed limiter; 3. a brake; 4. an acceleration device; 41. a flexible strap; 5. a first buffer; 6. a second buffer; 70. a lifting rope; 71. a winch; 72. a fixed pulley; 73. a movable pulley; 74. a hook; 75. and (6) pulling the rope.
Detailed Description
The technical solutions of 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.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
In this embodiment, two guide pulleys 11 are provided, a steel wire rope 12 is hung on the two guide pulleys 11, and two ends of the steel wire rope 12 respectively suspend the car 14 and the counterweight 13. The car 14 is connected with the speed limiter 2 through a speed limiter 2 rope, the steel wire rope 12 and/or the car 14 is provided with an overspeed protection device, and the overspeed protection device is in signal connection with the speed limiter 2. The overspeed protection device can be a brake 3, a rail clamping device or a bidirectional safety gear, the brake 3, the rail clamping device and the bidirectional safety gear are conventional devices in an elevator structure, and specific structures are not described again. As shown in fig. 1, in the present embodiment, a brake 3 of a wire rope 12 is provided on a counterweight 13 side.
The lifting device comprises a pulley block and a winch 71 which are arranged through the linkage of the lifting rope 70, a fixed pulley 72 and a movable pulley 73 are arranged in the pulley block, a lifting hook 74 is arranged on the movable pulley 73, the counterweight 13 is hung on the lifting hook 74 through a traction rope 75, a conventional automatic unhooking mechanism is arranged on the lifting hook 74, and the specific structure is not repeated herein. The hoist 71 is adapted to drive the sheave 73 set to hoist the counterweight 13 and the accelerator 4. The hoisting device hoists the counterweight 13 to a test height and releases the counterweight 13 at the test height to drive the car 14 upwards.
By arranging the accelerating device 4, the acting force for driving the car 14 to move upwards is increased, so that the car 14 can quickly reach the required test speed within the limited ascending distance. Meanwhile, the car 14 is separated from the counterweight 13 before reaching the test speed, so that the interference on the test result is avoided, the method is simple and feasible, and the requirements of different test speeds are met in a limited space.
As shown in fig. 1, a first buffer 5 is disposed above the cage and between the counterweight 13 and the cage, so that the counterweight 13 can be buffered when falling onto the cage, and the collision damage of the counterweight 13 and the cage can be avoided. And a second buffer 6 is arranged on the ground and under the suspension cage, so that the suspension cage can be buffered when contacting the ground, and the collision damage is avoided.
The test method of the test device of the embodiment is as follows:
step one, calculating the ascending height of a lift car 14 according to the speed limit of a speed governor 2 required by a test, calculating the weight of a balancing weight required to be added according to the total mass of a system required by the test, and adding the balancing weight with corresponding weight into a cage;
step two, setting the length of the flexible sling 41 to ensure that the accelerating device 4 touches the ground before the car 14 reaches the limited speed of the speed limiter 2 when the accelerating device 4 and the counterweight 13 descend so as to be separated from the counterweight 13;
thirdly, the hoisting machine 71 drives the lifting hook 74 to move downwards, and then hooks the counterweight 13 to lift upwards to a test height;
and step four, releasing the lifting hook 74, quickly dropping the counterweight 13 and the accelerating device 4 together, dragging the car 14 to quickly ascend, after the accelerating device 4 touches the ground, continuously accelerating the car 14 to ascend under the dragging of the counterweight 13 until the car 14 reaches the limited speed of the speed limiter 2, and at the moment, triggering the overspeed protection device by the speed limiter 2 to finish the test of the overspeed protection of the car 14 ascending.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (9)
1. The utility model provides an elevator car goes upward overspeed protection's test device which characterized in that includes: at least two guide wheels (11) arranged at intervals in the horizontal direction; a steel wire rope (12) is hung on the guide wheel (11), and a lift car (14) and a counterweight (13) are respectively hung at two ends of the steel wire rope; the car (14) is connected with a speed limiter (2); an overspeed protection device is arranged on the steel wire rope (12) and/or the car (14); the overspeed protection device is in signal connection with the speed limiter (2);
the hoisting device is suitable for hoisting the counterweight (13) to a test height and releasing the counterweight (13) at the test height so as to drive the car (14) to move upwards;
an acceleration device (4) disposed below the counterweight (13); when the accelerating device (4) and the counterweight (13) move downwards, the accelerating device (4) is separated from the counterweight (13) before the car (14) reaches the limited speed of the speed limiter (2).
2. Test device for elevator car overspeed protection upstream according to claim 1, characterized in that the connection between the accelerating device (4) and the counterweight (13) is by means of a flexible sling (41).
3. The elevator car overspeed protection test apparatus as set forth in claim 1, further comprising:
a first buffer (5) arranged on the acceleration device (4) and between the counterweight (13) and the acceleration device (4).
4. The elevator car overspeed protection test apparatus as set forth in claim 1, further comprising:
and the second buffer (6) is arranged on the ground and is positioned right below the accelerating device (4).
5. Test device for elevator car up-run overspeed protection according to any of claims 1-4, characterized in that the acceleration device (4) comprises:
a cage having a placement space;
and the balancing weights are suitable for being placed into and limited in the placing space.
6. The apparatus of claim 5, wherein the counterweight is a weight.
7. The testing device for the elevator car ascending overspeed protection according to claim 6, wherein the hoisting device comprises a pulley block and a winch (71) which are linked by a lifting rope (70);
a movable pulley (73) in the pulley block is provided with a hook (74); the counterweight (13) is hung on the lifting hook (74) through a traction rope (75); the winch (71) is suitable for driving the pulley block to lift the counterweight (13) and the accelerating device (4).
8. Test device for elevator car up-run overspeed protection according to claim 1, characterized in that the overspeed protection device is a brake (3), a rail clamp or a two-way safety gear.
9. A test method for elevator car up overspeed protection is characterized by comprising the following steps:
step one, calculating the ascending height of a lift car (14) according to the limited speed of a speed governor (2) required by a test, calculating the weight of a balancing weight required to be added according to the total mass of a system required by the test, and adding the balancing weight with corresponding weight into a suspension cage;
step two, setting the length of a flexible sling (41) to ensure that the accelerating device (4) contacts the ground before the lift car (14) reaches the limited speed of the speed limiter (2) when the accelerating device (4) and the counterweight (13) descend so as to be separated from the counterweight (13);
thirdly, the hoisting machine (71) drives the lifting hook (74) to move downwards, and then hooks the counterweight (13) to lift upwards to a test height;
and step four, releasing a lifting hook (74), quickly dropping the counterweight (13) and the accelerating device (4) together, dragging the car (14) to quickly ascend, after the accelerating device (4) contacts the ground, continuously accelerating the car (14) to ascend under the dragging of the counterweight (13) until the car (14) reaches the limited speed of the speed limiter (2), and at the moment, triggering an overspeed protection device by the speed limiter (2) to finish the test of ascending overspeed protection of the car (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110215193.2A CN112830360B (en) | 2021-02-25 | 2021-02-25 | Test device and test method for elevator car uplink overspeed protection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110215193.2A CN112830360B (en) | 2021-02-25 | 2021-02-25 | Test device and test method for elevator car uplink overspeed protection |
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| CN112830360A true CN112830360A (en) | 2021-05-25 |
| CN112830360B CN112830360B (en) | 2024-05-31 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102070053A (en) * | 2010-10-26 | 2011-05-25 | 西子奥的斯电梯有限公司 | Test device of elevator car ascending overspeed protection device |
| JP2012246116A (en) * | 2011-05-30 | 2012-12-13 | Mitsubishi Electric Corp | Elevator device, and emergency stop test method thereof |
| CN105836566A (en) * | 2016-05-12 | 2016-08-10 | 苏州富士电梯有限公司 | Emergency protective device for elevator car |
| CN207243200U (en) * | 2017-08-21 | 2018-04-17 | 邓潮森 | A kind of tracking-driven elevator of light-weight design |
| CN209275921U (en) * | 2018-11-26 | 2019-08-20 | 北京赛奥讯电梯安装工程有限公司 | A kind of carriage up-running over-speed protection system |
| CN214495304U (en) * | 2021-02-25 | 2021-10-26 | 深圳市质量安全检验检测研究院 | Testing device for up-going overspeed protection of elevator car |
-
2021
- 2021-02-25 CN CN202110215193.2A patent/CN112830360B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102070053A (en) * | 2010-10-26 | 2011-05-25 | 西子奥的斯电梯有限公司 | Test device of elevator car ascending overspeed protection device |
| JP2012246116A (en) * | 2011-05-30 | 2012-12-13 | Mitsubishi Electric Corp | Elevator device, and emergency stop test method thereof |
| CN105836566A (en) * | 2016-05-12 | 2016-08-10 | 苏州富士电梯有限公司 | Emergency protective device for elevator car |
| CN207243200U (en) * | 2017-08-21 | 2018-04-17 | 邓潮森 | A kind of tracking-driven elevator of light-weight design |
| CN209275921U (en) * | 2018-11-26 | 2019-08-20 | 北京赛奥讯电梯安装工程有限公司 | A kind of carriage up-running over-speed protection system |
| CN214495304U (en) * | 2021-02-25 | 2021-10-26 | 深圳市质量安全检验检测研究院 | Testing device for up-going overspeed protection of elevator car |
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| CN112830360B (en) | 2024-05-31 |
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