CN203021132U - Brake state detecting mechanism - Google Patents
Brake state detecting mechanism Download PDFInfo
- Publication number
- CN203021132U CN203021132U CN 201220602003 CN201220602003U CN203021132U CN 203021132 U CN203021132 U CN 203021132U CN 201220602003 CN201220602003 CN 201220602003 CN 201220602003 U CN201220602003 U CN 201220602003U CN 203021132 U CN203021132 U CN 203021132U
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- Prior art keywords
- lever
- switch
- micro
- quiet dish
- push rod
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Braking Elements And Transmission Devices (AREA)
Abstract
The utility model discloses a brake state detecting mechanism, which comprises a movable disc, a static disc, a micro switch, a lever and a mandril, wherein the movable disc is connected with the static disc, and the micro switch is arranged on the static disc through a screw; a contact is arranged on the static disc, and the lever is arranged on the static disc through a positioning pin; a lever reset piece is arranged between the lever and the static disc, and the lever rotates around the positioning pin; the mandril is arranged on the movable disc, and the movable disc drives the mandril to actuate; and the mandril actuates to drive the lever to rotate; and the lever rotates to trigger the contact of the micro switch to actuate. According to the brake state detecting mechanism provided by the utility model, the actuating stroke of the contact of the micro switch is stably magnified, the service life is long, the multiple of the actuating stroke of the contact of the micro switch can be expanded, and the structure is simple.
Description
Technical field
The utility model belongs to the state inspection field of elevator traction machine or elevator, is specifically related to a kind of testing agency that elevator machine brake opening and closing action is amplified, and is the improvement to existing testing agency.
Background technology
When the condition checkout gear of the elevator machine brake in prior art is all the drg action, the push rod on Moving plate touches the micro-switch contact, and the action of micro-switch contact opens and closes feedback of status to control system by drg.The actuating length opened and closed due to drg is too little and frequent, affected the regular event of micro-switch, had the phenomenon of misoperation, so only have the actuating length that increases the micro-switch contact, the regular event of guarantee micro-switch, prevent the phenomenon of misoperation.Through retrieval, find, for example Chinese utility model patent Granted publication CN2923626Y discloses " a kind of mechanism for detection of brake status ", this mechanism adopts lever amplification principle that the signal of feedback is amplified to realize, it comprises " Z " type support, push rod, pad, reed etc., micro-switch and reed are rack-mount, be fixed on together again on the quiet plate of drg, the push rod actuating spring, reed presses the contact action of micro-switch, and the contact of micro-switch is greater than the distance of lever contact to the reed attachment point to the distance of reed attachment point.Although this structure has been amplified the adhesive of opening of drg, move, because reed is metal strip, an end is installed on support by bolt and pad, and in moving frequently, reed easily is out of shape, and fatigue damage, lose measuring ability, causes potential safety hazard.
For example European patent Granted publication EP1445784B1 discloses " a kind of micro-switch that lever is installed " again, this micro-switch comprises electrical contact, electrical contact is by a plunger action, this plunger contacts with a switch lever, in the middle of this switch lever and, lever forms an angled lever by rigid joint, and angled lever is connected on a sidewall on chassis by flexible connector.The advantage that this structure has is: when a/b=3, the actuating length that drg is opened adhesive has been exaggerated 3 times.Also there is following shortcoming in this structure in actual use: at first, using the action fulcrum of flexible connector as angled lever, at drg, open or moment of adhesive, because flexible connector is elastomeric, the fulcrum of angled lever is unfixing, and accurately the deterministic force brachium is short, and flexible connector also easily distortion after Reusability, fatigue damage, lose measuring ability, causes potential safety hazard; Secondly, on the chassis side wall that is arranged on micro-switch of angled lever integral body, be subject to the restriction of installing space, the size of angled lever can not be excessive, and magnification factor is limited.
In view of above-mentioned prior art, the applicant has done useful design, has found solution to the problems described above, and to be proved be effective, and technical scheme described below produces under this background.
The utility model content
The purpose of this utility model is to provide a kind of elevator machine brake is opened and closed to the testing agency that action is amplified, by the signal feedback that detects to control system, make safety return circuit obtain stable feedback signal, guarantee the normal safe operation of elevator.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: a kind of testing agency of brake status, the testing agency of described brake status comprises Moving plate, quiet dish, micro-switch, lever and push rod, described Moving plate is connected with described quiet dish, described micro-switch is arranged on described quiet dish by screw, described quiet dish is provided with contact, described lever is arranged on described quiet dish by locating dowel pin, between described lever and described quiet dish, the lever return unit is installed, described lever rotates around locating dowel pin, described push rod is arranged on described Moving plate, described Moving plate action drives described push rod action, described push rod action makes described lever rotation, described lever rotation touches the contact action of described micro-switch.
In preferred embodiment of the utility model, described lever return unit is torsion spring, and described torsion spring set is located on described locating dowel pin, and an end is arranged on Jing Panshang, and the other end is arranged on lever.
In preferred embodiment of the utility model, described micro-switch and described lever all are installed in the mounting groove of quiet dish, on described lever, cover has an end centre portion of locating dowel pin to have groove, described torsion spring set is located on locating dowel pin and is installed in described groove, described torsion spring one end is resisted against on the cell wall of mounting groove of quiet dish, and the other end is resisted against on the groove of lever.
In preferred embodiment of the utility model, described push rod is screw.
In preferred embodiment of the utility model, described push rod is arranged on described Moving plate, and contacts described lever.
In preferred embodiment of the utility model, a pressing plate also is installed on described micro-switch, lever is stated in described platen cover residence.
The testing agency of brake status of the present utility model the has had stable amplification actuating length of micro-switch contact, long service life, can enlarge the multiple of micro-switch contact actuating length, simple in structure.
The accompanying drawing explanation
Fig. 1 is the structural representation of testing agency's one preferred embodiment of the utility model brake status;
Fig. 2 is testing agency's inner structure schematic diagram of the utility model brake status;
Fig. 3 is testing agency's structure for amplifying schematic diagram of the utility model brake status;
In figure, each assembly and Reference numeral thereof are respectively: 1, Moving plate, 2, quiet dish, 21, mounting groove, 3, micro-switch, 31, contact, 4, lever, 5, push rod, 6, locating dowel pin, 7, the lever return unit, 8, pressing plate.
The specific embodiment
It is only below the general introduction of technical solutions of the utility model, in order to better understand technological means of the present utility model, and can be implemented according to the content of specification sheets, below with a preferred embodiment and accompanying drawing, the technical solution of the utility model is further described.
Consult Fig. 1, the testing agency of a kind of brake status disclosed in figure, the Moving plate 1 that comprises drg, quiet dish 2, micro-switch 3, lever 4 and push rod 5, described micro-switch 3 is arranged in the mounting groove 21 of quiet dish 2 by screw, one contact 31 is arranged on it, described lever 4 is 11 to determine the rigid pipe of angle, by locating dowel pin 6, be arranged in the mounting groove 21 of quiet dish 2, lever 4 can rotate around locating dowel pin 6, on lever 4, cover has the middle groove that has of this end of locating dowel pin 6, between lever 4 and quiet dish 2, lever return unit 7 is installed, described lever return unit 6 is torsion spring or extension spring, in the present embodiment, preferentially be chosen as torsion spring, described torsion spring set is located on locating dowel pin 6 and is installed in the groove of lever 4, one end is resisted against on the cell wall of mounting groove 21 of quiet dish 2, the other end is resisted against on the groove of lever 4, described push rod 5 is screw, and this screw is screwed onto on Moving plate 1, through after Moving plate 1, contacts on lever 4.
Refer to Fig. 2, the testing agency of a kind of brake status disclosed in figure, the Moving plate 1 that comprises drg, quiet dish 2, micro-switch 3, lever 4 and push rod 5, described micro-switch 3 is arranged on quiet dish 2 by screw, one contact 31 is arranged on it, described lever 4 is 11 to determine the rigid pipe of angle, by locating dowel pin 6, be arranged on quiet dish 2, lever 4 can rotate around locating dowel pin 6, on lever 4, cover has the middle groove that has of this end of locating dowel pin 6, between lever 4 and quiet dish 2, lever return unit 7 is installed, described lever return unit 7 is torsion spring or extension spring, in the present embodiment, still preferentially be chosen as torsion spring, described torsion spring set is located on locating dowel pin and is installed in the groove of lever 4, one end is arranged in the hole on quiet dish 2, the other end is resisted against on the groove of lever 4, described push rod 5 is arranged on Moving plate 1 by screw, contacts on lever 4.
Refer to Fig. 3, the difference of the present embodiment and embodiment 1 is: a pressing plate 8 also is installed on micro-switch 3, and this pressing plate 8 covers lever 6 and prevents that lever 6 from coming off, and all the other are with the description of embodiment 1.
In above-mentioned three embodiment, the contact 31 of supposing micro-switch 3 is L2 to the arm of force of locating dowel pin 6, and push rod 5 and lever 4 contact points are L1 to the arm of force of locating dowel pin 6, L2 > L1, the actuating length of the contact 31 of micro-switch 3 is L2/L1 times of push rod 5 actuating lengths.When the moment of drg Moving plate 1 and 2 adhesives of quiet dish, Moving plate 1 action drives push rod 5 actions, and push rod 5 actions make lever 4 rotations, and lever 4 rotations touch contact 31 actions of micro-switch 3 again, and the feedback of status that micro-switch 3 declutches drg is to control system; When the moment that drg Moving plate 1 and quiet dish 2 are opened, lever 4 sets back under the effect of lever return unit 7, and lever 4 unclamps the contact 31 of micro-switch 3, micro-switch 3 by the feedback of status of drg band-type brake to control system.If the gap between Moving plate 1 and quiet dish 2 is A, the actuating length of push rod 5 is exactly A, and by the amplification of lever 4, the actuating length of the contact 31 of micro-switch 3 will be amplified to L2A/L1 so.The testing agency of brake status of the present utility model the has had stable amplification actuating length of micro-switch contact, long service life, can enlarge the multiple of micro-switch contact actuating length, simple in structure.
It is more than the specific embodiment of the present utility model; but protection domain of the present utility model is not limited to this; any those of ordinary skill in the art are in the disclosed technical scope of the utility model; the variation that can expect without creative work or replacement, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain that claims were limited.
Claims (6)
1.
a kind of testing agency of brake status, it is characterized in that: the testing agency of described brake status comprises Moving plate, quiet dish, micro-switch, lever and push rod, described Moving plate is connected with described quiet dish, described micro-switch is arranged on described quiet dish by screw, described quiet dish is provided with contact, described lever is arranged on described quiet dish by locating dowel pin, between described lever and described quiet dish, the lever return unit is installed, described lever rotates around locating dowel pin, described push rod is arranged on described Moving plate, described Moving plate action drives described push rod action, described push rod action makes described lever rotation, described lever rotation touches the contact action of described micro-switch.
2.
the testing agency of a kind of brake status according to claim 1 is characterized in that: described lever return unit is torsion spring, and described torsion spring set is located on described locating dowel pin, and an end is arranged on Jing Panshang, and the other end is arranged on lever.
3.
the testing agency of a kind of brake status according to claim 2, it is characterized in that: described micro-switch and described lever all are installed in the mounting groove of quiet dish, on described lever, cover has an end centre portion of locating dowel pin to have groove, described torsion spring set is located on locating dowel pin and is installed in described groove, described torsion spring one end is resisted against on the cell wall of mounting groove of quiet dish, and the other end is resisted against on the groove of lever.
4.
the testing agency of a kind of brake status according to claim 1 is characterized in that: described push rod is screw.
5.
the testing agency of a kind of brake status according to claim 1 is characterized in that: described push rod is arranged on described Moving plate, and contacts described lever.
6.
the testing agency of a kind of brake status according to claim 1 is characterized in that: a pressing plate also is installed on described micro-switch, and lever is stated in described platen cover residence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220602003 CN203021132U (en) | 2012-11-15 | 2012-11-15 | Brake state detecting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220602003 CN203021132U (en) | 2012-11-15 | 2012-11-15 | Brake state detecting mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203021132U true CN203021132U (en) | 2013-06-26 |
Family
ID=48645128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220602003 Expired - Lifetime CN203021132U (en) | 2012-11-15 | 2012-11-15 | Brake state detecting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203021132U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102963788A (en) * | 2012-11-15 | 2013-03-13 | 常熟市琴茂机械有限公司 | Detection mechanism for braking state of brake |
| CN112478969A (en) * | 2020-11-20 | 2021-03-12 | 浙江理工大学 | Elevator failure prediction method based on brake torque analysis |
| CN112723078A (en) * | 2021-01-18 | 2021-04-30 | 上海乐天电梯部件有限公司 | Brake state detection device |
-
2012
- 2012-11-15 CN CN 201220602003 patent/CN203021132U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102963788A (en) * | 2012-11-15 | 2013-03-13 | 常熟市琴茂机械有限公司 | Detection mechanism for braking state of brake |
| CN112478969A (en) * | 2020-11-20 | 2021-03-12 | 浙江理工大学 | Elevator failure prediction method based on brake torque analysis |
| CN112478969B (en) * | 2020-11-20 | 2022-02-11 | 浙江理工大学 | Elevator failure prediction method based on brake torque analysis |
| CN112723078A (en) * | 2021-01-18 | 2021-04-30 | 上海乐天电梯部件有限公司 | Brake state detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130626 |