Elevator band-type brake control circuit

Abstract

The utility model discloses an elevator band-type brake control circuit, which belongs to the field of elevators and comprises a first safety relay K1, a second safety relay K2, a band-type brake coil L and a metal oxide semiconductor (MOS) tube Q1. One end of the first safety relay K1 is connected with a DC110V power supply, the other end of the first safety relay K1 is connected with one end of the second safety relay K2, the other end of the second safety relay K2 is connected with one end of the band-type brake coil L, the other end of the band-type brake coil L is connected with a drain electrode of the MOS tube Q1, and a source electrode of the MOS tube Q1 is grounded. According to the elevator band-type brake control system, an elevator band-type brake control method is provided, elevator band-type brake control can be achieved, and the defect that noise of a contactor control circuit is large is overcome. According to the utility model, the requirement on current control is low, and the noise of band-type brake action is reduced; the structure is simple, the operation is convenient, the cost is saved, the safety relay contact is not switched on or off for a long time, carbon deposition of the safety relay is avoided, and the service life of the relay is ensured.

Description

Technical Field

[0001] The utility model relates to the field of elevators, in particular to an elevator brake control circuit. Background Art

[0002] With the construction of more and more high-rise buildings, elevators have become an indispensable device in existing high-rise buildings or shopping malls. Elevators provide a convenient and fast way of travel. Especially for the elderly, disabled people, children and people who carry heavy objects, elevators can make it easier for them to go up and down the stairs, reducing the consumption of physical strength and time. At the same time, the speed of elevators is getting faster and faster, which can be more efficient in production and life. Elevators can reduce the noise, dust and odor on the way to the stairs. At the same time, elevators are a comfortable, easy and pleasant way to travel. For the elderly, disabled people and families with more items, home elevators can facilitate their travel and activities and improve their quality of life. At the same time, the comfort of home elevators is also superior to stairs, which can reduce the fatigue and discomfort caused by climbing stairs. Compared with stairs, elevators have more advantages in safety and convenience. Home elevators are equipped with safety configurations such as emergency parking devices, safety doors, and anti-collision devices to ensure the safety of personnel in emergency situations. Moreover, the use of home elevators is more convenient and faster, which can improve the travel efficiency of personnel.

[0003] The existing elevator brake control is generally controlled by a contactor. This circuit produces a lot of noise when the contactor is actuated. In the circuit where a separate relay controls the brake coil, arcing is easily caused when the relay is disconnected, which affects the service life of the relay. Utility Model Content

[0004] In view of some existing problems, the purpose of the present invention is to provide an elevator brake control circuit to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An elevator brake control circuit comprises a first safety relay K1, a second safety relay K2, a brake coil L and a MOS tube Q1; one end of the first safety relay K1 is connected to a DC110V power supply, the other end of the first safety relay K1 is connected to one end of the second safety relay K2, the other end of the second safety relay K2 is connected to one end of the brake coil L, the other end of the brake coil L is connected to the drain of the MOS tube Q1, and the source of the MOS tube Q1 is grounded.

[0007] As a further solution of the utility model: the drain of the MOS tube Q1 is connected to the anode of the diode, and the cathode of the diode is connected to the source of the MOS tube Q1.

[0008] As a further solution of the utility model: the substrate of the MOS tube Q1 is connected to the source of the MOS tube Q1.

[0009] As a further solution of the utility model: the gate of the MOS tube Q1 is connected to an external signal line.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The purpose of the utility model is to avoid the shortcomings of high noise in the contactor control circuit and the shortcomings of large current when disconnecting the relay when controlling a single relay, which is easy to arc and affects the service life of the relay, and can be used for silent elevator brake control. The utility model is designed to control the on-off of the relay coil and the MOS tube according to the needs of the elevator brake control logic. The first safety relay K1 is used to control the on-off of the brake coil voltage, the second safety relay K2 is used to control the on-off of the brake coil voltage, and the MOS tube Q1 is used to control the on-off of the brake coil voltage. The utility model provides an elevator brake control method, which can realize the elevator brake control and avoid the shortcomings of high noise in the contactor control circuit. The utility model has relatively low requirements for current control and reduces the noise of the brake action; the structure is simple, easy to operate, and is conducive to cost saving. The safety relay contacts will not be on and off for a long time, avoiding carbon deposition of the safety relay and ensuring the service life of the relay. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The present invention is a schematic diagram of the principle of an elevator brake control circuit disclosed in an embodiment.

[0013] The reference numerals in the figure are: 1. first safety relay K1; 2. second safety relay K2; 3. brake coil L; 4. MOS tube Q1. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", and "connected" should be understood in a broad sense; for example, it can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, or an electrical connection, a direct connection, or an indirect connection through an intermediate medium, or the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0016] See also Figure 1 , an elevator brake control circuit, comprising a first safety relay K1, a second safety relay K2, a brake coil L and a MOS tube Q1;

[0017] One end of the first safety relay K1 is connected to a DC110V power supply, the other end of the first safety relay K1 is connected to one end of the second safety relay K2, the other end of the second safety relay K2 is connected to one end of the brake coil L, the other end of the brake coil L is connected to the drain of the MOS tube Q1, and the source of the MOS tube Q1 is grounded.

[0018] The drain of the MOS tube Q1 is connected to the anode of the diode, and the cathode of the diode is connected to the source of the MOS tube Q1.

[0019] The substrate of the MOS transistor Q1 is connected to the source of the MOS transistor Q1.

[0020] The gate of the MOS tube Q1 is connected to an external signal line to facilitate on-off control of the MOS tube Q1.

[0021] According to the control logic of the elevator brake coil, when the brake is opened, the coil of the first safety relay K1 and the relay coil of the second safety relay K2 are energized at the same time, the contacts of the first safety relay K1 and the second safety relay K2 are turned on, and then the MOS tube Q1 is controlled to be turned on, and the brake coil L is energized; when the brake is closed, the MOS tube Q1 is controlled to be turned off, and then the coil of the first safety relay K1 and the contacts of the second safety relay K2 are controlled to be disconnected at the same time; the brake coil L is de-energized.

[0022] The purpose of the utility model is to avoid the shortcomings of high noise in the contactor control circuit and the shortcomings of large current when disconnecting the relay when controlling a single relay, which is easy to arc and affects the service life of the relay, and can be used for silent elevator brake control. The utility model is designed to control the on-off of the relay coil and the MOS tube according to the needs of the elevator brake control logic. The first safety relay K1 is used to control the on-off of the brake coil voltage, the second safety relay K2 is used to control the on-off of the brake coil voltage, and the MOS tube Q1 is used to control the on-off of the brake coil voltage. The utility model provides an elevator brake control method, which can realize the elevator brake control and avoid the shortcomings of high noise in the contactor control circuit. The utility model has relatively low requirements for current control and reduces the noise of the brake action; the structure is simple, easy to operate, and is conducive to cost saving. The safety relay contacts will not be on and off for a long time, avoiding carbon deposition of the safety relay and ensuring the service life of the relay.

[0023] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

[0024] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An elevator brake control circuit, characterized in that: The invention comprises a first safety relay K1(1), a second safety relay K2(2), a brake coil L(3) and a MOS tube Q1(4); one end of the first safety relay K1(1) is connected to a DC110V power supply, the other end of the first safety relay K1(1) is connected to one end of the second safety relay K2(2), the other end of the second safety relay K2(2) is connected to one end of the brake coil L(3), the other end of the brake coil L(3) is connected to the drain of the MOS tube Q1(4), and the source of the MOS tube Q1(4) is grounded.

2. An elevator brake control circuit according to claim 1, characterized in that: The drain of the MOS transistor Q1 (4) is connected to the anode of the diode, and the cathode of the diode is connected to the source of the MOS transistor Q1 (4).

3. An elevator brake control circuit according to claim 2, characterized in that: The substrate of the MOS transistor Q1 (4) is connected to the source of the MOS transistor Q1 (4).

4. An elevator brake control circuit according to claim 3, characterized in that: The gate of the MOS transistor Q1 (4) is connected to an external signal line.

Images