CN214495304U - Testing device for up-going overspeed protection of elevator car - Google Patents
Testing device for up-going overspeed protection of elevator car Download PDFInfo
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- CN214495304U CN214495304U CN202120422738.2U CN202120422738U CN214495304U CN 214495304 U CN214495304 U CN 214495304U CN 202120422738 U CN202120422738 U CN 202120422738U CN 214495304 U CN214495304 U CN 214495304U
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- counterweight
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- overspeed protection
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Abstract
The utility model provides a test device and test method of elevator car overspeed protection that goes upward, including two at least guide pulleys that set up at the interval on the horizontal direction, wire rope hangs on the guide pulley, and its both ends suspend the car in midair respectively and to heavy. 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 utility model relates to a detect technical field, concretely relates to elevator car goes upward test device of 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.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model lies in overcoming among the prior art that the raman spectrum of same liquid sample detects and the mass spectrum detects and can only sample respectively and detect respectively.
Therefore, the utility model provides an elevator car goes upward test device of overspeed protection, include:
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 utility model discloses technical scheme has following advantage:
1. the utility model provides an elevator car goes upward test device of overspeed protection, including two at least guide pulleys that set up at the interval on the horizontal direction, wire rope hangs on the guide pulley, and the car is suspended in midair respectively and to heavy in its both ends. 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 embodiments or the technical solutions in 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 for those skilled in the art, other drawings can be obtained according to these drawings 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 solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to 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", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific 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 is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can 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 can be made without departing from the scope of the invention.
Claims (8)
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120422738.2U CN214495304U (en) | 2021-02-25 | 2021-02-25 | Testing device for up-going overspeed protection of elevator car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120422738.2U CN214495304U (en) | 2021-02-25 | 2021-02-25 | Testing device for up-going overspeed protection of elevator car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214495304U true CN214495304U (en) | 2021-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120422738.2U Withdrawn - After Issue CN214495304U (en) | 2021-02-25 | 2021-02-25 | Testing device for up-going overspeed protection of elevator car |
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| CN (1) | CN214495304U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112830360A (en) * | 2021-02-25 | 2021-05-25 | 深圳市特种设备安全检验研究院 | Testing device and testing method for elevator car uplink overspeed protection |
-
2021
- 2021-02-25 CN CN202120422738.2U patent/CN214495304U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112830360A (en) * | 2021-02-25 | 2021-05-25 | 深圳市特种设备安全检验研究院 | Testing device and testing method for elevator car uplink overspeed protection |
| CN112830360B (en) * | 2021-02-25 | 2024-05-31 | 深圳市质量安全检验检测研究院 | Test device and test method for elevator car uplink overspeed protection |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20211026 Effective date of abandoning: 20230901 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20211026 Effective date of abandoning: 20230901 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |