Optocoupled hall contactor interlock

Abstract

The application relates to an optical coupling Hall contactor auxiliary interlock, which comprises a shell, a circuit board for bearing a state output circuit module, the circuit board being detachably installed inside the shell, a moving push rod slidably installed on the circuit board, a magnetic block detachably installed on the moving push rod, and a Hall magnetic field induction module installed on the circuit board and located at the side end of the moving push rod, when the magnetic block moves along with the moving push rod, the magnetic field intensity received by the Hall magnetic field induction module is changed; and the state output circuit module is used for transmitting the magnetic field information acquired by the Hall magnetic field induction module. The application has novel design, can realize real-time monitoring of the state of the contactor, the output state switching is rapid, the mechanical interlock is replaced, the failure rate is reduced, and the practicability is high.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of for railway locomotive operation power supply equipment auxiliary device, specifically a kind of light coupling Hall contactor auxiliary interlocking. BACKGROUND

[0002] Electric locomotive often occurs main contactor failure in the process of operation, when main contactor failure will cut off the several motors of corresponding bogie or cut off the several motors of a car. According to the statistics of Daqin line, only 129 main contactor failures occurred in 2013, accounting for 18.8% of motor isolation failure, causing 4 locomotives to be damaged, affecting 32 hours of transportation, and interfering with the normal transportation order of railway.

[0003] From the safety point of view, main contactor failure directly causes part of the loss of locomotive traction, seriously affects the safe operation of train Daqin line electric locomotive undertakes the task of two million tons of train length nearly 2400 meters, one million tons of train length nearly 1200 meters, train charges, exhaust time is long, in order to adapt to the characteristics of line undulating slope, large slope, long continuous uphill and downhill, the key to train stable operation is to fully and reasonably use locomotive traction and regenerative braking force, and to reasonably control according to the characteristics of slope, that is, to fully exert locomotive traction to speed up and rush up the slope in advance, and to fully use locomotive regenerative braking force to control speed in downhill, and to reduce the use of air brake. After the main contactor failure of the locomotive, the corresponding motor of the locomotive loses traction and braking force, which is prone to cause the train to stop due to insufficient traction in long and large uphill, and is prone to use air brake due to insufficient regenerative braking force in long and large downhill, and even cannot guarantee the charging time of the locomotive after air brake relief due to insufficient regenerative braking force, thereby causing the locomotive to overspeed or even to rush out, which seriously affects the safety of train operation.

[0004] One of the main reasons for the main contactor failure of electric locomotive is that auxiliary contact failure causes no feedback signal, resulting in the central processing system determining main contactor failure. The commonly used solution is to connect a parallel auxiliary interlocking on the original contactor to improve the reliability of contactor feedback signal. However, this method not only increases the cost of equipment, but also does not fundamentally solve the problem. SUMMARY

[0005] The purpose of the present application is to provide a kind of light coupling Hall contactor auxiliary interlocking to solve the problems raised in the background art.

[0006] To achieve the above purpose, the present application provides the following technical scheme:

[0007] A kind of light coupling Hall contactor auxiliary interlocking, the light coupling Hall contactor auxiliary interlocking includes:

[0008] A shell;

[0009] A circuit board for carrying a state output circuit module, which is detachably installed inside the shell;

[0010] A motion push rod slidingly installed on the circuit board, a magnetic block detachably installed on the motion push rod, and a Hall magnetic field induction module installed on the circuit board and located at the side end of the motion push rod, when the magnetic block moves along with the motion push rod, to change the magnetic field intensity received by the Hall magnetic field induction module;

[0011] The state output circuit module is used for sending the magnetic field information obtained by the Hall magnetic field induction module.

[0012] As a further aspect of the present application: the optocoupler Hall contactor auxiliary interlock further comprises:

[0013] A wiring terminal detachably installed on the shell, which is connected with the state output circuit module, and is used for outputting a logic level matched with the magnetic field information obtained by the Hall magnetic field induction module under the action of the state output circuit module.

[0014] As a further aspect of the present application: the circuit board further has a state indicating lamp connected with the state output circuit module, which displays two states according to the output logic level, one: when the output logic level is high, the state indicating lamp is in the lit state; two: when the output logic level is low, the state indicating lamp is in the extinguished state.

[0015] As a further aspect of the present application: the state output circuit module comprises a power supply circuit, an optocoupler isolation conversion circuit, and a MOS tube driving circuit, wherein:

[0016] The power supply circuit is transformed by external power input to supply power to the optocoupler isolation conversion circuit and the MOS tube driving circuit;

[0017] The optocoupler isolation conversion circuit is used for isolating and outputting the magnetic field information obtained by the Hall magnetic field induction module;

[0018] The driving MOS tube circuit outputs the corresponding logic level through the wiring terminal.

[0019] As a further aspect of the present application: the wiring terminal is provided with three groups, with the center surface of the two state indicating lamps as the reference, one group is provided on one side; two groups are provided on the other side.

[0020] As a further aspect of the present application: the shell further has a buckle push rod for detachably installing the circuit board, the buckle push rod comprises a push rod and two symmetrically arranged buckles installed on the push rod by a spring.

[0021] Compared with the prior art, the application has the advantages that the magnetic block is arranged to change the magnetic field intensity received by the Hall magnetic field induction module when the action push rod moves, the state output circuit module isolates and outputs the magnetic field information obtained by the Hall magnetic field induction module through the optical coupling isolation conversion circuit, the driving MOS tube circuit outputs the corresponding logic level through the wiring terminal, the state indicating lamp is arranged to be bright or dark according to the output logic level, the state of the contactor is monitored in real time, the output state is switched quickly, the mechanical interlocking is replaced, the failure rate is reduced, and the practicability is high. BRIEF DESCRIPTION OF DRAWINGS

[0022] Fig. 1 It is an exploded view of the structure of the optical coupling Hall contactor auxiliary interlocking.

[0023] Fig. 2 It is a structure schematic view of the optical coupling Hall contactor auxiliary interlocking.

[0024] Fig. 3 It is a structure schematic view of the optical coupling Hall contactor auxiliary interlocking from another angle.

[0025] In the figure: 101-state output circuit module, 102-magnetic block, 103-Hall magnetic field induction module, 104-circuit board, 105-buckle push rod, 106-wiring terminal, 107-action push rod, 108-state indicating lamp, 109-housing. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0027] In addition, the elements in the application are referred to as "fixed to" or "arranged on" another element, which can be directly on another element or can have a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or can have a middle element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0028] Please refer to Figs. 1-3 In the embodiments of the application, an optical coupling Hall contactor auxiliary interlocking includes:

[0029] The shell 109 is used for bearing the circuit board 104 of the state output circuit module 101, which is detachably installed inside the shell 109, in particular, the circuit board 104 is detachably connected with the shell 109 through the buckle push rod 105 arranged on the shell 109, the buckle push rod 105 comprises a push rod and two symmetrically arranged buckles installed on the push rod through springs, which belongs to the existing installation structure, and the present application will not be described in detail.

[0030] As an alternative embodiment of the present application, the circuit board 104 can also be fixed with the inner side of the shell 109 through bolts, and the present application will not be limited in detail.

[0031] Preferably, the shell 109 comprises a shell with a groove and a cover plate detachably installed with the shell, the circuit board 104 is installed in the shell and is packaged through the shell.

[0032] The action push rod 107 slidably installed on the circuit board 104, the magnetic block 102 detachably installed on the action push rod 107 and the Hall magnetic field induction module 103 installed on the circuit board 104 and located at the side end of the action push rod 107, when the magnetic block 102 moves with the action push rod 107, to change the magnetic field intensity received by the Hall magnetic field induction module 103.

[0033] Preferably, the action push rod has a protruding small block in the middle position, which can be connected with the contactor, and the contactor is provided with a guide groove, the protruding small block slides in the guide groove to realize the directional movement of the action push rod 107.

[0034] The magnetic block 102 can be connected with the action push rod 107 in a clamping installation mode, of course, the placement is only a feasible scheme, and bolt fixing or pressing plate fixing can also be adopted, which can be selected according to the requirements, and the present application will not be limited in detail.

[0035] The state output circuit module 101 is used for sending the magnetic field information acquired by the Hall magnetic field induction module 103, in particular, the state output circuit module 101 comprises a power supply circuit, an optical coupling isolation conversion circuit and a MOS tube driving circuit, wherein:

[0036] The power supply circuit is transformed by external power input to supply power to the optical coupling isolation conversion circuit and the MOS tube driving circuit;

[0037] The optical coupling isolation conversion circuit is used for isolating and outputting the magnetic field information acquired by the Hall magnetic field induction module 103;

[0038] The driving MOS tube circuit outputs corresponding logic level through the wiring terminal 106.

[0039] The light coupling Hall contactor auxiliary interlocking further comprises:

[0040] The wiring terminal 106 is detachably mounted on the shell 109, and is connected with the state output circuit module 101, and is used for outputting a logic level matched with the magnetic field information acquired by the Hall magnetic field induction module 103 under the action of the state output circuit module 101.

[0041] The wiring terminal 106 is provided with three groups, one group is arranged on one side with the center surface of the two state indicator lamps 108 as the reference, and two groups are arranged on the other side.

[0042] The circuit board 104 is further provided with the state indicator lamp 108 connected with the state output circuit module 101, and the state indicator lamp 108 displays two states according to the output logic level, one is that the state indicator lamp 108 is in the lighting state when the output logic level is high, and the other is that the state indicator lamp 108 is in the extinguishing state when the output logic level is low.

[0043] In the embodiment of the application, the magnetic block 102 is arranged to move along with the action push rod 107, so as to change the magnetic field strength received by the Hall magnetic field induction module 103, the state output circuit module 101 isolates and outputs the magnetic field information acquired by the Hall magnetic field induction module 103 through the light coupling isolation conversion circuit, drives the MOS tube circuit to output the corresponding logic level through the wiring terminal 108, and the state indicator lamp 109 is arranged to indicate the lighting and extinguishing according to the output logic level, so as to realize the real-time monitoring of the state of the contactor, the output state switching is rapid, the mechanical interlocking is replaced, the failure rate is reduced, and the practicability is high.

[0044] It will be obvious to a person skilled in the art that, in its broadest form, the application is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the application. Therefore, the embodiments should be considered exemplary and not restrictive, and the scope of the application is defined by the appended claims rather than by the above description, and it is intended to encompass all changes and modifications falling within the meaning and scope of the equivalent elements of the claims. Any reference signs in the claims should not be considered as limiting the claims involved.

[0045] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature described. The specification can include implicit combinations of explicitly mentioned features and / or explicit combinations of implicitely mentioned features. Each embodiment depends on the explicit combinations of features and / or the implicit combinations of features made specifically within that embodiment, and each such embodiment can be combined with every other such embodiment to create further embodiments.

Claims

1. An optocoupled Hall contactor interlock, comprising: The light coupling Hall contactor auxiliary interlock comprises: a shell (109); a circuit board (104) for carrying a state output circuit module (101), which is detachably installed inside the shell (109); a motion push rod (107) slidably installed on the circuit board (104), a magnetic block (102) detachably installed on the motion push rod (107), and a Hall magnetic field induction module (103) installed on the circuit board (104) and located at a side end of the motion push rod (107), so as to change the magnetic field intensity received by the Hall magnetic field induction module (103) when the magnetic block (102) moves with the motion push rod (107); the state output circuit module (101) is configured to send the magnetic field information acquired by the Hall magnetic field induction module (103); the light coupling Hall contactor auxiliary interlock further comprises: a wiring terminal (106) detachably installed on the shell (109), which is connected with the state output circuit module (101) and configured to output a logic level matching the magnetic field information acquired by the Hall magnetic field induction module (103) under the action of the state output circuit module (101); the shell (109) is further provided with a buckle push rod (105) for detachably installing the circuit board (104), the buckle push rod (105) comprising a push rod and two symmetrically arranged clamping hooks installed on the push rod by a spring.

2. An auxiliary interlock for an optical coupling Hall contactor according to claim 1, wherein The circuit board (104) is further provided with a state indicating lamp (108) connected with the state output circuit module (101), which displays two states according to the output logic level, one of which is that the state indicating lamp (108) is in a lighting state when the output logic level is high, and the other of which is that the state indicating lamp (108) is in an extinguishing state when the output logic level is low.

3. An auxiliary interlock for an optical coupling Hall contactor according to claim 1, wherein The state output circuit module (101) comprises a power supply circuit, an opto-isolating conversion circuit, and a MOS tube driving circuit, wherein: the power supply circuit is configured to be powered by the opto-isolating conversion circuit and the MOS tube driving circuit through external power input and voltage conversion; the opto-isolating conversion circuit is configured to isolate and output the magnetic field information acquired by the Hall magnetic field induction module (103); the MOS tube driving circuit outputs a corresponding logic level through the wiring terminal (106).

4. An optocoupler Hall contactor auxiliary interlock according to claim 2, wherein The wiring terminal (106) is provided with three groups, one group on one side and two groups on the other side with the center plane of the two state indicating lamps (108) as the reference.

Images