CN110759200A - Machine-room-less elevator braking force verification device - Google Patents
Machine-room-less elevator braking force verification device Download PDFInfo
- Publication number
- CN110759200A CN110759200A CN201911035329.0A CN201911035329A CN110759200A CN 110759200 A CN110759200 A CN 110759200A CN 201911035329 A CN201911035329 A CN 201911035329A CN 110759200 A CN110759200 A CN 110759200A
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- terminal
- braking force
- brake
- verification device
- power supply
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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
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
- B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
Abstract
The invention discloses a brake force verification device for a machine-room-less elevator, which comprises a test circuit module, wherein the test circuit module is connected between a band-type brake power supply of a band-type brake control circuit of the elevator and a group of brake coils and is used for enabling the group of brake coils to be disconnected after being connected with the band-type brake power supply for a preset time so as to artificially simulate insufficient brake force of the elevator. Therefore, the invention can conveniently verify the braking force of the elevator without the machine room.
Description
Technical Field
The invention relates to a braking force verification device for a machine room-less elevator.
Background
The 8.3 article of the Chinese regulation elevator supervision and inspection and periodic inspection rule-traction and forced drive elevator (TSGT 7001-2009, No. 2 modification list) stipulates the inspection content and requirements of the protection device for the accidental movement of the car. Item (2) herein, if the elevator employs a brake with internal redundancy as a braking means, the car and landing doors should be closed and normal starting of the elevator prevented when the brake lifting (or releasing) fails or the braking force is insufficient.
When the elevator with the machine room, which adopts the brake with internal redundancy as the braking component, is verified to be insufficient in braking force on site, the verification can be directly carried out on the machine room by operating the mechanical brake release device of the traction machine. However, in a machine-roomless elevator using a brake having an internal redundancy as a braking means, it is difficult to directly verify that a hoisting machine is located in a hoistway in many cases.
Disclosure of Invention
An object of the present invention is to solve at least one of the above problems and disadvantages in the prior art.
According to one aspect of the invention, the brake force verification device for the elevator without the machine room comprises a test circuit module, wherein the test circuit module is connected between a band-type brake power supply of a band-type brake control circuit of the elevator and a group of brake coils and is used for enabling the group of brake coils to be disconnected after being connected with the band-type brake power supply for a preset time so as to artificially simulate insufficient brake force of the elevator.
According to an exemplary embodiment of the invention, the test circuit module comprises a time delay relay, a coil of the time delay relay is connected to the brake power supply, and a contact of the time delay relay is connected in series on a connection line between the group of brake coils and the brake power supply; the coil of the time delay relay switches the contact from the closed position to the open position after being electrified for a preset time, so that the group of brake coils is opened after being connected with the band-type brake power supply for a preset time.
According to another exemplary embodiment of the present invention, the test circuit module further comprises a rectifier, an ac terminal of the rectifier is connected to the brake power supply, and a dc terminal of the rectifier is connected to the set of brake coils.
According to another exemplary embodiment of the present invention, the contacts of the time delay relay are connected in series on a connection line between one ac terminal of the rectifier and the band-type brake power supply.
According to another exemplary embodiment of the present invention, the test circuit module further comprises a connection interface, the time delay relay is adapted to be connected to the band-type brake power supply through the connection interface, and the rectifier is adapted to be connected to the band-type brake power supply and the set of brake coils through the connection interface.
According to another exemplary embodiment of the present invention, the connection interface comprises a first terminal, a second terminal, a third terminal, a fourth terminal and a fifth terminal adapted to be connected with a test interface leading from the band-type brake control circuit; the first terminal is connected to one end of a coil and a contact of the time delay relay, and one alternating current terminal of the rectifier is connected to the other end of the contact of the time delay relay; the second terminal is connected to the other end of the coil of the delay relay and the other ac terminal of the rectifier; the third terminal and the fifth terminal are connected to positive and negative dc terminals of the rectifier, respectively; the fourth terminal is a dummy terminal for mating with only one terminal in the test interface, which is not connected to any electronic device on the test circuit module.
According to another exemplary embodiment of the invention, the set of brake coils comprises a primary brake coil and an auxiliary brake coil connected in series; the first terminal is used for being connected with the live wire of band-type brake power, the second terminal be used for with the zero line of band-type brake power is connected, the third terminal be used for with the positive terminal of the primary brake coil among a set of brake coil is connected, the fifth terminal be used for with the negative pole end of the auxiliary brake coil among a set of brake coil is connected.
According to another exemplary embodiment of the present invention, the test circuit module further comprises a circuit board on which the time delay relay, the rectifier and the connection interface are integrated.
According to another exemplary embodiment of the present invention, the machine room-less elevator braking force verification apparatus further includes a box body in which the test circuit module is installed, and a box cover installed on an opening of the box body.
According to another exemplary embodiment of the present invention, the machine room-less elevator braking force verification apparatus further includes an elastic sealing member pressed between the case body and the cover to seal a mating interface between the case body and the cover.
According to another exemplary embodiment of the invention, the connection interface of the test circuit module is adapted to be electrically connected to the band-type brake power supply and the set of brake coils by means of cables; the brake force verification device for the elevator without the machine room further comprises a waterproof cable joint arranged on the box body, and the cable is led into the box body through the waterproof cable joint and is electrically connected with the connection interface.
According to another exemplary embodiment of the present invention, a plurality of screw holes are formed on the case body, and connection holes corresponding to the plurality of screw holes are formed on the case cover; the machine room-less elevator braking force verification device further comprises a plurality of bolts which respectively penetrate through the plurality of connecting holes and are respectively screwed into the plurality of threaded holes so as to mount the box cover on the box body.
According to another exemplary embodiment of the present invention, the machine-roomless elevator braking force verification apparatus further includes an "L-shaped" mounting bracket provided in the box body, and the circuit board of the test circuit module is fixed to a vertical support wall of the "L-shaped" mounting bracket by a plurality of screws.
According to another exemplary embodiment of the present invention, the delay time of the delay relay is manually adjustable, so that the predetermined time at which the set of brake coils is switched on with the brake power supply is adjustable.
In the foregoing exemplary embodiments according to the present invention, the situation of insufficient braking force of the elevator can be conveniently simulated by the elevator braking force verification device without the machine room, so that the verification of the braking force of the elevator without the machine room can be conveniently performed.
In addition, in some of the foregoing exemplary embodiments of the invention, the braking force verification device for the elevator without machine room is compact, portable and low in cost.
In addition, in some of the foregoing exemplary embodiments of the invention, the housing of the machineroom-less elevator braking force verification apparatus may reach the IP65 waterproof protection level.
In addition, in some of the foregoing exemplary embodiments of the invention, the machineroom-less elevator braking force verification device may be conveniently connected to a test interface leading from the elevator brake control circuit through a cable.
Other objects and advantages of the present invention will become apparent from the following description of the invention which refers to the accompanying drawings, and may assist in a comprehensive understanding of the invention.
Drawings
Fig. 1 shows an exploded schematic view of a braking force verification device for a machineroom-less elevator according to an exemplary embodiment of the present invention;
fig. 2 shows a schematic circuit diagram of the braking force verification apparatus for an elevator without a machine room shown in fig. 1.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings. In the specification, the same or similar reference numerals denote the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the general inventive concept of the present invention and should not be construed as limiting the invention.
Furthermore, in the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in schematic form in order to simplify the drawing.
According to one general technical concept of the present invention, there is provided a brake force verifying apparatus for a machine-roomless elevator, which includes a test circuit module connected between a band-type brake power supply of a band-type brake control circuit of an elevator and a set of brake coils for causing the set of brake coils to be turned off after being turned on with the band-type brake power supply for a predetermined time to artificially simulate an insufficiency of the brake force of the elevator.
Fig. 1 shows an exploded schematic view of a braking force verification device for a machineroom-less elevator according to an exemplary embodiment of the present invention; fig. 2 shows a schematic circuit diagram of the braking force verification apparatus for an elevator without a machine room shown in fig. 1.
As shown in fig. 1 and 2, in the illustrated embodiment, the apparatus for verifying the braking force of an elevator without a machine room comprises a test circuit module 200, the test circuit module 200 being connected between a band-type brake power supply (220V ac power supply) of a band-type brake control circuit 10 of the elevator and a set of brake coils MGB, MGB1 for causing the set of brake coils MGB, MGB1 to be turned off after being turned on with the band-type brake power supply for a predetermined time to artificially simulate an insufficient braking force of the elevator. For example, the set of brake coils MGB, MGB1 are switched off after being switched on with the band-type brake power supply for 100ms, 200ms, 300ms, 400ms, or other suitable time.
In the above embodiment, when the set of brake coils MGB, MGB1 is connected to the brake power supply, the set of brake coils MGB, MGB1 drives the corresponding brake to the non-braking position (open position), so that the lack of brake force of the elevator can be simulated. After the corresponding brake is opened for a predetermined time, the test circuit module 200 again opens the electrical connection between the set of brake coils MGB, MGB1 and the brake power supply to restore the corresponding brake to the braking position (closed position).
As shown in fig. 1 and 2, in the illustrated embodiment, one set of brake coils MGB, MGB1 includes a primary brake coil MGB and an auxiliary brake coil MGB1 connected in series.
As shown in fig. 1 and 2, in the illustrated embodiment, the test circuit module 200 includes a delay relay 210, a coil 211 of the delay relay 210 being connected to the band-type brake power supply, and contacts 212 of the delay relay 210 being connected in series on a connection line between a set of brake coils MGB, MGB1 and the band-type brake power supply.
As shown in fig. 1 and 2, in the illustrated embodiment, the coil 211 of the time delay relay 210 switches the contacts 212 from the closed position to the open position after being energized for a predetermined time, so that one set of brake coils MGB, MGB1 opens after being connected to the brake power supply for a predetermined time.
As shown in fig. 1 and 2, in the illustrated embodiment, the test circuit module 200 further includes a rectifier 220, the ac terminals of the rectifier 220 being connected to a brake power supply, the dc terminals of the rectifier 220 being connected to a set of brake coils MGB, MGB 1.
As shown in fig. 1 and 2, in the illustrated embodiment, the contacts 212 of the delay relay 210 are connected in series on a connection line between one of the ac terminals of the rectifier 220 and the internal combustion engine.
As shown in fig. 1 and 2, in the illustrated embodiment, the test circuit module 200 further includes a connection interface 230, the delay relay 210 is adapted to be connected to a brake power supply through the connection interface 230, and the rectifier 220 is adapted to be connected to the brake power supply and a set of brake coils MGB, MGB1 through the connection interface 230.
As shown in fig. 1 and 2, in the illustrated embodiment, the connection interface 230 includes a first terminal 1/5, a second terminal 2/5, a third terminal 3/5, a fourth terminal 4/5, and a fifth terminal 5/5 adapted to connect with the test interface 13 leading from the brake control circuit 10.
As shown in fig. 1 and 2, in the illustrated embodiment, the first terminal 1/5 is connected to one end of the coil 211 and the contact 212 of the delay relay 210, and one ac terminal of the rectifier 220 is connected to the other end of the contact 212 of the delay relay 210. The second terminal 2/5 is connected to the other end of the coil 211 of the time delay relay 210 and to the other ac terminal of the rectifier 220. The third terminal 3/5 and the fifth terminal 5/5 are connected to positive and negative dc terminals, respectively, of the rectifier 220. The fourth terminal 4/5 is a dummy terminal used only to mate with one terminal in the test interface that is not connected to any electronic device on the test circuit module 200.
As shown in fig. 1 and 2, in the illustrated embodiment, the first terminal 1/5 is for connection to the hot line L of the band-type brake power supply, the second terminal 2/5 is for connection to the neutral line N of the band-type brake power supply, the third terminal 3/5 is for connection to the positive terminal of the primary brake coil MGB of the set of brake coils, and the fifth terminal 5/5 is for connection to the negative terminal of the auxiliary brake coil MGB1 of the set of brake coils.
As shown in fig. 1 and 2, in the illustrated embodiment, the brake control circuit 10 of the elevator further includes a pair of normally open contacts SF and SF1 of two independent contactors, respectively, which participate in the brake control, and the remaining normally open contacts of the two independent contactors are connected in series between the output side of the frequency converter and the main machine. The normally open contact SF of one of the contactors is connected in series between the positive output terminal of the rectifier and the positive terminal of the main brake coil MGB in the brake control circuit. The other contactor normally open contact SF1 is connected in series between the negative output terminal of the rectifier and the negative terminal of the auxiliary brake coil MGB1 in the brake control circuit.
As shown in fig. 1 and 2, in the illustrated embodiment, the test circuit module 200 further includes a circuit board. The time delay relay 210, the rectifier 220 and the connection interface 230 are integrated on a circuit board.
As shown in fig. 1 and 2, in the illustrated embodiment, the brake force verifying apparatus for a machineroom-less elevator further includes a case body 101 and a case cover 102 installed on an opening of the case body 101, and a test circuit module 200 is installed in the case body 101.
As shown in fig. 1 and 2, in the illustrated embodiment, the brake force verifying apparatus for an elevator without a machine room further includes an elastic sealing member 103, and the elastic sealing member 103 is compressed between the case body 101 and the cover 102 to seal a mating interface between the case body 101 and the cover 102.
As shown in fig. 1 and 2, in the illustrated embodiment, the connection interface 230 of the test circuit module 200 is adapted to be electrically connected to the brake power supply and the set of brake coils MGB, MGB1 by cables. The machineroom-less elevator braking force verification apparatus further includes a waterproof cable connector 300 provided on the cassette body 101, and the cable is introduced into the cassette body 101 via the waterproof cable connector 300 and electrically connected with the connection interface 230.
As shown in fig. 1 and 2, in the illustrated embodiment, a plurality of screw holes are formed on a case body 101, and connection holes corresponding to the plurality of screw holes are formed on a case cover 102; the machine room-less elevator braking force verification apparatus further includes a plurality of bolts 104, the plurality of bolts 104 passing through the plurality of connection holes and being screwed into the plurality of screw holes, respectively, to mount the box cover 102 to the box body 101.
As shown in fig. 1 and 2, in the illustrated embodiment, the machineroom-less elevator braking force verification apparatus further includes an "L-shaped" mounting bracket 105 provided in the box body 101, and the circuit board of the test circuit module 200 is fixed to a vertical support wall of the "L-shaped" mounting bracket 105 by a plurality of screws 106.
As shown in fig. 1 and 2, in an exemplary embodiment of the present invention, the delay time of the aforementioned delay relay 210 is manually adjustable, so that the time (the aforementioned predetermined time) when one set of brake coils MGB, MGB1 is connected to the brake power supply is adjustable.
It will be appreciated by those skilled in the art that the embodiments described above are exemplary and can be modified by those skilled in the art, and that the structures described in the various embodiments can be freely combined without conflict in structure or principle.
Although the present invention has been described in connection with the accompanying drawings, the embodiments disclosed in the drawings are intended to be illustrative of preferred embodiments of the present invention and should not be construed as limiting the invention.
Although a few embodiments of the present general inventive concept have been shown and described, it will be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the general inventive concept, the scope of which is defined in the appended claims and their equivalents.
It should be noted that the word "comprising" does not exclude other elements or steps, and the words "a" or "an" do not exclude a plurality. Furthermore, any reference signs in the claims shall not be construed as limiting the scope of the invention.
Claims (14)
1. A braking force verification device for a machine room-less elevator, comprising:
the testing circuit module (200) is connected between a band-type brake power supply of a band-type brake control circuit (10) of the elevator and a group of brake coils (MGB, MGB1) and is used for enabling the group of brake coils (MGB, MGB1) to be switched off after being switched on for a preset time with the band-type brake power supply so as to artificially simulate insufficient braking force of the elevator.
2. The braking force verification device for a machine-roomless elevator according to claim 1, wherein:
the test circuit module (200) comprises a time delay relay (210), a coil (211) of the time delay relay (210) is connected to the brake power supply, and a contact (212) of the time delay relay (210) is connected in series on a connection line between the group of brake coils (MGB, MGB1) and the brake power supply;
the coil (211) of the delay relay (210) switches the contact (212) from a closed position to an open position after a predetermined time of charging so that the set of brake coils (MGB, MGB1) opens after a predetermined time of connection with the brake power supply.
3. The braking force verification device for elevators without machine rooms of claim 2, wherein:
the test circuit module (200) further comprises a rectifier (220), an ac terminal of the rectifier (220) being connected to the band-type brake power supply, a dc terminal of the rectifier (220) being connected to the set of brake coils (MGB, MGB 1).
4. The braking force verification device for elevators without machine rooms of claim 3, wherein:
the contact (212) of the delay relay (210) is connected in series on a connecting line between one alternating current terminal of the rectifier (220) and the band-type brake power supply.
5. The braking force verification device for elevators without machine rooms of claim 4, wherein:
the test circuit module (200) further comprises a connection interface (230), the time delay relay (210) being adapted to be connected to the brake power supply through the connection interface (230), the rectifier (220) being adapted to be connected to the brake power supply and the set of brake coils (MGB, MGB1) through the connection interface (230).
6. The braking force verification device for elevators without machine rooms of claim 5, wherein:
the connection interface (230) comprises a first terminal (1/5), a second terminal (2/5), a third terminal (3/5), a fourth terminal (4/5) and a fifth terminal (5/5) which are suitable for being connected with a test interface (13) led out from the band-type brake control circuit (10);
the first terminal (1/5) is connected to one end of a coil (211) and a contact (212) of the delay relay (210), and one alternating current terminal of the rectifier (220) is connected to the other end of the contact (212) of the delay relay (210);
the second terminal (2/5) is connected to the other end of the coil (211) of the time delay relay (210) and the other ac terminal of the rectifier (220);
the third terminal (3/5) and the fifth terminal (5/5) are connected to positive and negative DC terminals, respectively, of the rectifier (220);
the fourth terminal (4/5) is a dummy terminal for mating with only one terminal in the test interface, which is not connected to any electronic device on the test circuit module (200).
7. The braking force verification device for elevators without machine rooms of claim 6, wherein:
the set of brake coils includes a main brake coil (MGB) and an auxiliary brake coil (MGB1) in series;
the brake control circuit comprises a first terminal (1/5), a second terminal (2/5), a third terminal (5/5) and a fifth terminal (5/5), wherein the first terminal (1/5) is used for being connected with a live wire (L) of a band-type brake power supply, the second terminal (2/5) is used for being connected with a zero line (N) of the band-type brake power supply, the third terminal (3/5) is used for being connected with a positive end of a main brake coil (MGB) in a group of brake coils, and the fifth terminal (5/5) is used for being connected with a negative end of an auxiliary brake coil (MGB1) in.
8. The braking force verification device for elevators without machine rooms of claim 7, wherein:
the test circuit module (200) further comprises a circuit board on which the delay relay (210), the rectifier (220) and the connection interface (230) are integrated.
9. The braking force verification device for elevators without machine rooms of claim 8, wherein:
the elevator braking force verification device without the machine room further comprises a box body (101) and a box cover (102) installed on an opening of the box body (101), and the test circuit module (200) is installed in the box body (101).
10. The braking force verification device for elevators without machine rooms of claim 9, wherein:
the elevator braking force verification device without the machine room further comprises an elastic sealing member (103), and the elastic sealing member (103) is squeezed between the box body (101) and the box cover (102) so as to seal a matching interface between the box body (101) and the box cover (102).
11. The braking force verification device for elevators without machine rooms of claim 10, wherein:
a connection interface (230) of the test circuit module (200) is adapted to be electrically connected to the band-type brake power supply and the set of brake coils (MGB, MGB1) by a cable;
the elevator braking force verification device without machine room further comprises a waterproof cable joint (300) arranged on the box body (101), and the cable is led into the box body (101) through the waterproof cable joint (300) and is electrically connected with the connection interface (230).
12. The braking force verification device for elevators without machine rooms of claim 11, wherein:
a plurality of threaded holes are formed in the box body (101), and connecting holes corresponding to the threaded holes are formed in the box cover (102);
the elevator braking force verification device without the machine room further comprises a plurality of bolts (104), wherein the bolts (104) respectively penetrate through the connecting holes and are respectively screwed into the threaded holes so as to install the box cover (102) on the box body (101).
13. The braking force verification device for elevators without machine rooms of claim 12, wherein:
the elevator braking force verification device without the machine room further comprises an L-shaped mounting bracket (105) arranged in the box body (101), and a circuit board of the test circuit module (200) is fixed to a vertical supporting wall of the L-shaped mounting bracket (105) through a plurality of screws (106).
14. The braking force verification device for elevators without machine rooms of claim 2, wherein:
the delay time of the delay relay (210) is manually adjustable such that the predetermined time at which the set of brake coils (MGB, MGB1) is switched on with the brake power supply is adjustable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911035329.0A CN110759200A (en) | 2019-10-29 | 2019-10-29 | Machine-room-less elevator braking force verification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911035329.0A CN110759200A (en) | 2019-10-29 | 2019-10-29 | Machine-room-less elevator braking force verification device |
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| CN110759200A true CN110759200A (en) | 2020-02-07 |
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| CN201911035329.0A Pending CN110759200A (en) | 2019-10-29 | 2019-10-29 | Machine-room-less elevator braking force verification device |
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| CN105967016A (en) * | 2016-06-24 | 2016-09-28 | 广州广日电梯工业有限公司 | Monitoring device of band-type brake detection switch |
| CN207759851U (en) * | 2017-12-28 | 2018-08-24 | 深圳市新日电梯有限公司 | A kind of control of elevator internal contracting brake system and observation circuit |
| CN208790969U (en) * | 2018-08-29 | 2019-04-26 | 广东川田电梯有限公司 | A kind of unique elevator shunting device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2011032049A (en) * | 2009-08-03 | 2011-02-17 | Mitsubishi Electric Corp | Elevator device |
| CN202558405U (en) * | 2012-05-10 | 2012-11-28 | 戴开煌 | Emergent electric control switching off protection system of elevator |
| CN103818792A (en) * | 2014-03-18 | 2014-05-28 | 石家庄五龙制动器股份有限公司 | Braking torque self-detecting circuit for elevator brake |
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