Microcomputer-based ferromagnetic resonance elimination device

Abstract

The utility model relates to the technical field of microcomputer type ferromagnetic resonance eliminating devices, in particular to a microcomputer type ferromagnetic resonance eliminating device which comprises a shell, a supporting seat, a circuit board, a first positioning groove, a first positioning block, a second positioning groove, a second positioning block, a synchronous moving mechanism and a clamping mechanism. The circuit board is arranged on one side of the supporting seat, the two first positioning grooves are symmetrically formed in the supporting seat, a first positioning block is arranged in each first positioning groove in a sliding mode, the two second positioning grooves are symmetrically formed in the supporting seat, and a second positioning block is arranged in each second positioning groove in a sliding mode. According to the technical scheme, the problem that in the prior art, in the using process of a microcomputer type ferromagnetic resonance eliminating device, the circuit board mounting and dismounting efficiency is low is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of microcomputer type ferromagnetic resonance elimination devices, in particular to a microcomputer type ferromagnetic resonance elimination device. Background Art

[0002] The microcomputer type ferromagnetic resonance elimination device is an instrument placed on the secondary side of the PT to eliminate ferromagnetic resonance. The difference between it and the primary detuning device is that the microcomputer detuning device is a detuning instrument with the advantages of analysis, recording, printing, uploading, etc.

[0003] The ferromagnetic resonance elimination device uses an AVR single-chip microcomputer as the core to perform cyclic detection on the PT open triangle voltage (i.e., zero-sequence voltage). Under normal working conditions, the high-power detuning element in the device is in a blocked state and has no effect on the system. When the PT open triangle voltage is greater than 30V, it means that the system has a fault. The device collects and analyzes the data of the open triangle voltage of the voltage transformer and determines the current fault state; if it is a ferromagnetic resonance of a certain frequency, the detuning element is quickly started to eliminate it. If it is an overvoltage or grounding, the device gives a corresponding alarm signal. For various faults, the device can give alarm signals and displays, and automatically record and store relevant fault information, and report it to the host computer.

[0004] A ferromagnetic resonance elimination device is disclosed in announcement number CN207782391U, including a device body and an indicator light. A switch is fixedly provided on one side surface of the device body, a display screen is fixedly provided below the switch, the other end of the indicator light penetrates one end surface of the device body to reach the interior of the device body, the contact point between the device body and the display screen is sealed by glue, an operation button is fixedly provided on one side surface of the device body, an indicator light is fixedly provided above the operation button, a circuit board is fixedly provided inside the device body, and the circuit board is fixedly provided on the upper surface of the inner bottom end of the device body by bolts.

[0005] However, when the above-mentioned ferromagnetic resonance elimination device is in use, a large number of electronic components such as voltage sampling module, communication module, main control MCU, thyristor output module, phase-locked loop module, etc. are arranged on the upper end of the circuit board, which will make the overall weight of the circuit board very heavy. If the device body is vibrated, since the circuit board and the device body are fixedly connected, the vibration force on the device body will be directly transmitted to the circuit board as a whole, thereby causing resonance and causing a large number of electronic components arranged on the circuit board to be damaged by vibration. At the same time, the circuit board is fixed to the device body by bolts. When the circuit board is maintained and repaired, multiple bolts need to be removed separately in turn, which affects the installation and removal efficiency of the circuit board. Utility Model Content

[0006] The utility model provides a microcomputer type ferromagnetic resonance elimination device, which solves the problem of low efficiency of circuit board installation and disassembly during use of the microcomputer type ferromagnetic resonance elimination device in the related art.

[0007] The technical solution of the utility model is as follows: A microcomputer-based ferromagnetic resonance elimination device comprises a housing, a support seat, a circuit board, a first positioning groove, a first positioning block, a second positioning groove, a second positioning block, a synchronous moving mechanism and a clamping mechanism;

[0008] The support seat is fixedly arranged on the inner bottom wall of the shell;

[0009] The circuit board is arranged on one side of the support seat;

[0010] There are two first positioning grooves, and the two first positioning grooves are symmetrically arranged on the support seat;

[0011] The first positioning block is slidably arranged in each of the first positioning grooves;

[0012] The second positioning grooves are provided in two numbers, and the two second positioning grooves are symmetrically arranged on the support seat;

[0013] The second positioning block is slidably arranged in each of the second positioning grooves;

[0014] The synchronous movement mechanism is arranged in the support seat, and is used to control the first positioning block and the second positioning block to move synchronously;

[0015] The clamping mechanism is arranged on the first positioning block and the second positioning block, and is used for clamping and fixing the circuit board.

[0016] Preferably, the synchronous movement mechanism comprises:

[0017] A first cavity, the first cavity is disposed in the support seat, and the first cavity is communicated with the first positioning groove and the second positioning groove respectively;

[0018] A driving groove, the driving groove is formed on the inner bottom wall of the first cavity;

[0019] A driving column, the driving column being rotatably disposed at the bottom of the driving groove;

[0020] A driving disc, wherein the driving disc is fixedly disposed on the driving column;

[0021] A first rotating shaft, wherein the first rotating shaft is arranged at an eccentric position of the driving disk so as to rotate correspondingly to the first positioning block, and a first connecting rod is hingedly arranged between the first rotating shaft and the first positioning block;

[0022] a moving groove, the moving groove being arranged on the driving disk corresponding to the second positioning block;

[0023] A second rotating shaft, the second rotating shaft is slidably arranged in the movable groove, and a second connecting rod is hingedly arranged between the second rotating shaft and the second positioning block;

[0024] A first torsion spring, wherein the first torsion spring is sleeved on the driving column, and two ends of the first torsion spring are respectively fixedly connected to the first cavity side wall and the driving disk;

[0025] A relative movement mechanism is arranged in the driving disk and is used to control the second rotating shaft to move relative to it.

[0026] Furthermore, the relative movement mechanism comprises:

[0027] a second cavity, the second cavity being disposed in the driving disk and being communicated with the moving groove;

[0028] A support column, the support column is rotatably disposed on the inner bottom wall of the second cavity;

[0029] A support plate, the support plate is fixedly disposed on the support column;

[0030] A third rotating shaft, the eccentric positions of the supporting plates are respectively rotatably provided with the third rotating shaft, and a third connecting rod is hingedly provided between the third rotating shaft and the second rotating shaft;

[0031] A second torsion spring, wherein the second torsion spring is sleeved on the support column, and two ends of the second torsion spring are respectively fixedly connected to the second cavity side wall and the support plate.

[0032] Furthermore, the clamping mechanism comprises:

[0033] A first clamping plate, the first clamping plate being fixedly disposed on the first positioning block and the second positioning block;

[0034] A clamping groove, wherein the first positioning block and the second positioning block are located on one side of the first clamping plate and are respectively provided with the clamping groove;

[0035] a second clamping plate, the second clamping plate being slidably disposed in the clamping groove;

[0036] A clamping spring is fixedly arranged between the second clamping plate and the side wall of the clamping groove.

[0037] Furthermore, the side walls of the first clamping plate and the second clamping plate are respectively fixedly provided with anti-slip pads.

[0038] On the basis of the above scheme, the shell side wall is connected to a heat dissipation tube, a heat dissipation fan is fixedly arranged in the heat dissipation tube, the shell side wall is provided with a heat dissipation port, and a filter is fixedly arranged in the heat dissipation port and the heat dissipation tube.

[0039] The working principle and beneficial effects of the utility model are:

[0040] 1. In the utility model, by setting the synchronous moving mechanism, after pulling the first positioning block and the second positioning block and placing the circuit board on the support seat, the driving column and the driving disk can be driven to rotate by the action of the first torsion spring, and then the first positioning block and the second positioning block are driven to move by the first connecting rod and the second connecting rod respectively, so that the circuit board can be easily clamped by the first positioning block and the second positioning block;

[0041] 2. In the utility model, through the arrangement of the relative movement mechanism, when encountering circuit boards of different specifications, after the first positioning block clamps the opposite sides of the circuit board, the rotation of the second torsion spring can drive the support column and the support plate to rotate, and then the third connecting rod drives the second positioning block to continue to move synchronously, so as to facilitate clamping the other two sides of the circuit board, thereby facilitating the centering clamping of circuit boards of different specifications;

[0042] 3. In the present invention, by setting the clamping mechanism, after the circuit board is placed between the first clamping plate and the second clamping plate, the circuit board can be prevented from being offset in the height direction under the action of the clamping spring, and the anti-seismic effect of the circuit board can be improved by the deformation of the clamping spring;

[0043] 4. In the present invention, by setting up the cooling fan, it is convenient to control the gas flow inside and outside the shell, thereby improving the heat dissipation effect of the circuit board;

[0044] 5. In the utility model, through the arrangement of the shell, the support seat, the circuit board, the first positioning groove, the first positioning block, the second positioning groove, the second positioning block, the synchronous moving mechanism and the clamping mechanism, it is convenient to clamp the circuit board in the horizontal direction by moving the first positioning block and the second positioning block. At the same time, through the arrangement of the first clamping plate and the second clamping plate, it is convenient to avoid the height direction deviation of the circuit board. During the clamping process, it is only necessary to pull the first positioning block, the second positioning block and the second clamping plate to realize the clamping and disassembly operation of the circuit board, which solves the problem of low efficiency of circuit board installation and disassembly during use of the microcomputer-type ferromagnetic resonance elimination device in the related art. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0046] Figure 1 It is a schematic diagram of the structure of the utility model;

[0047] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0048] Figure 3 This is a cross-sectional structural diagram of the synchronous moving mechanism of the utility model;

[0049] Figure 4 It is a schematic cross-sectional structure diagram of the synchronous moving mechanism of the utility model.

[0050] In the figure: 1. shell; 2. support seat; 3. circuit board; 4. first positioning block; 5. second positioning block; 6. first cavity; 7. driving column; 8. driving disk; 9. first connecting rod; 10. second connecting rod; 11. first torsion spring; 12. supporting column; 13. supporting disk; 14. third connecting rod; 15. second torsion spring; 16. first clamping plate; 17. second clamping plate; 18. clamping spring; 19. heat sink; 20. cooling fan. DETAILED DESCRIPTION

[0051] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, 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.

[0052] like Figure 1~Figure 4 As shown, this embodiment proposes a microcomputer-type ferromagnetic resonance elimination device, including a shell 1, a support seat 2, a circuit board 3, a first positioning groove, a first positioning block 4, a second positioning groove, a second positioning block 5, a synchronous movement mechanism and a clamping mechanism. The support seat 2 is fixedly arranged on the inner bottom wall of the shell 1, and the circuit board 3 is arranged on one side of the support seat 2. The first positioning groove is set to two, and the two first positioning grooves are symmetrically arranged on the support seat 2. A first positioning block 4 is slidably arranged in each first positioning groove. The second positioning groove is set to two, and the two second positioning grooves are symmetrically arranged on the support seat 2. A second positioning block 5 is slidably arranged in each second positioning groove. The synchronous movement mechanism is arranged in the support seat 2, and is used to control the first positioning block 4 and the second positioning block 5 to move synchronously. The clamping mechanism is arranged on the first positioning block 4 and the second positioning block 5, and is used to clamp and fix the circuit board 3.

[0053] Among them, the synchronous movement mechanism includes a first cavity 6, a driving groove, a driving column 7, a driving disk 8, a first rotating shaft, a moving groove, a second rotating shaft, a first torsion spring 11 and a relative movement mechanism. The first cavity 6 is opened in the support seat 2, and the first cavity 6 is respectively connected to the first positioning groove and the second positioning groove. The driving groove is opened on the inner bottom wall of the first cavity 6, the driving column 7 is rotatably set at the bottom of the driving groove, and the driving disk 8 is fixedly set on the driving column 7. The first rotating shaft and the first positioning block 4 are correspondingly set at the eccentric position of the driving disk 8. A first connecting rod 9 is hingedly arranged between the first rotating shaft and the first positioning block 4, and the moving groove and the second positioning block 5 are correspondingly opened on the driving disk 8. A second rotating shaft is slidably arranged in the moving groove, and a second connecting rod 10 is hingedly arranged between the second rotating shaft and the second positioning block 5. The first torsion spring 11 is sleeved on the driving column 7, and the two ends of the first torsion spring 11 are respectively fixedly connected to the side wall of the first cavity 6 and the driving disk 8. The relative movement mechanism is arranged in the driving disk 8 for controlling the relative movement of the second rotating shaft.

[0054] Specifically, the operator pulls the first positioning block 4 and the second positioning block 5 to move and after placing the circuit board 3 on the support seat 2, the operator releases the first positioning block 4 and the second positioning block 5, so that the driving column 7 and the driving disk 8 can be driven to rotate through the action of the first torsion spring 11, and then the first positioning block 4 and the second positioning block 5 are driven to move through the first connecting rod 9 and the second connecting rod 10 respectively, so as to facilitate the centering clamping of the circuit board 3 by the first positioning block 4 and the second positioning block 5.

[0055] Among them, the relative movement mechanism includes a second cavity, a support column 12, a support disk 13, a third rotating shaft and a second torsion spring 15. The second cavity is opened in the driving disk 8, and the second cavity is connected to the moving groove. The support column 12 is rotatably set on the inner bottom wall of the second cavity, and the support disk 13 is fixedly set on the support column 12. The eccentric position of the support disk 13 is rotatably set with a third rotating shaft, and a third connecting rod 14 is hingedly set between the third rotating shaft and the second rotating shaft. The second torsion spring 15 is mounted on the support column 12, and the two ends of the second torsion spring 15 are respectively fixedly connected to the side wall of the second cavity and the support disk 13.

[0056] Specifically, when encountering circuit boards 3 of different specifications, after clamping the opposite sides of the circuit board 3 by the first positioning block 4, the support column 12 and the support plate 13 can be driven to rotate by the rotation of the second torsion spring 15, and then the second positioning block 5 can be driven to continue to move synchronously by the third connecting rod 14, so as to facilitate clamping the other two sides of the circuit board 3, so that circuit boards 3 of different specifications can be centrally clamped.

[0057] Among them, the clamping mechanism includes a first clamping plate 16, a clamping groove, a second clamping plate 17 and a clamping spring 18. The first clamping plate 16 is fixedly arranged on the first positioning block 4 and the second positioning block 5. The first positioning block 4 and the second positioning block 5 are respectively provided with clamping grooves on one side of the first clamping plate 16. The second clamping plate 17 is slidably arranged in the clamping groove. The clamping spring 18 is fixedly arranged between the second clamping plate 17 and the side wall of the clamping groove. The side walls of the first clamping plate 16 and the second clamping plate 17 are respectively fixedly provided with anti-slip pads.

[0058] Specifically, after the circuit board 3 is placed between the first clamping plate 16 and the second clamping plate 17 , the clamping spring 18 can prevent the circuit board 3 from being offset in height direction, while the deformation of the clamping spring 18 can enhance the anti-vibration effect of the circuit board 3 .

[0059] The side wall of the shell 1 is connected to a heat dissipation tube 19 , a heat dissipation fan 20 is fixedly arranged in the heat dissipation tube 19 , a heat dissipation port is arranged on the side wall of the shell 1 , and a filter is fixedly arranged in the heat dissipation port and the heat dissipation tube 19 .

[0060] Specifically, the operation of the heat dissipation fan 20 can control the flow of gas inside and outside the housing 1 , thereby improving the heat dissipation effect of the circuit board 3 .

[0061] In this embodiment, when in use, the operator pulls the first positioning block 4 and the second positioning block 5 to move and places the circuit board 3 between the first clamping plate 16 and the second clamping plate 17, and then the operator releases the first positioning block 4 and the second positioning block 5, so that the driving column 7 and the driving disk 8 can be driven to rotate through the action of the first torsion spring 11, and then the first connecting rod 9 and the second connecting rod 10 are used to drive the first positioning block 4 and the second positioning block 5 to move, so as to facilitate the centering clamping of the circuit board 3 by the first positioning block 4 and the second positioning block 5. When encountering circuit boards 3 of different specifications, after the opposite sides of the circuit board 3 are clamped by the first positioning block 4, the support column 12 and the support disk 13 can be driven to rotate by the rotation of the second torsion spring 15, and then the second positioning block 5 can be driven to continue to move synchronously through the third connecting rod 14, so as to facilitate the clamping of the other two sides of the circuit board 3, so that circuit boards 3 of different specifications can be centering clamped.

[0062] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A microcomputer-based ferromagnetic resonance elimination device, characterized in that: include: Housing (1); A support seat (2), the support seat (2) being fixedly arranged on the inner bottom wall of the shell (1); A circuit board (3), the circuit board (3) being arranged on one side of the support seat (2); A first positioning groove, wherein two first positioning grooves are provided, and the two first positioning grooves are symmetrically arranged on the support seat (2); A first positioning block (4), wherein each of the first positioning grooves is slidably provided with the first positioning block (4); A second positioning groove, wherein two second positioning grooves are provided, and the two second positioning grooves are symmetrically arranged on the support seat (2); A second positioning block (5), wherein each of the second positioning grooves is slidably provided with the second positioning block (5); A synchronous movement mechanism, the synchronous movement mechanism is arranged in the support seat (2) and is used to control the first positioning block (4) and the second positioning block (5) to move synchronously; A clamping mechanism, the clamping mechanism is arranged on the first positioning block (4) and the second positioning block (5), and is used to clamp and fix the circuit board (3).

2. A microcomputer-based ferromagnetic resonance elimination device according to claim 1, characterized in that: The synchronous movement mechanism comprises: A first cavity (6), the first cavity (6) being disposed in the support seat (2), the first cavity (6) being communicated with the first positioning groove and the second positioning groove respectively; A driving groove, the driving groove being formed on the inner bottom wall of the first cavity (6); A driving column (7), the driving column (7) being rotatably disposed at the bottom of the driving groove; A driving disc (8), the driving disc (8) being fixedly arranged on the driving column (7); A first rotating shaft, the first rotating shaft being arranged at an eccentric position of the driving disk (8) so as to rotate correspondingly to the first positioning block (4), and a first connecting rod (9) being hingedly arranged between the first rotating shaft and the first positioning block (4); a movable groove, the movable groove being arranged on the driving disk (8) corresponding to the second positioning block (5); A second rotating shaft, the second rotating shaft being slidably disposed in the movable groove, and a second connecting rod (10) being hingedly disposed between the second rotating shaft and the second positioning block (5); a first torsion spring (11), wherein the first torsion spring (11) is sleeved on the driving column (7), and two ends of the first torsion spring (11) are respectively fixedly connected to the side wall of the first cavity (6) and the driving disk (8); A relative movement mechanism, wherein the relative movement mechanism is arranged in the driving disk (8) and is used to control the second rotating shaft to move relative to it.

3. A microcomputer-based ferromagnetic resonance elimination device according to claim 2, characterized in that: The relative movement mechanism comprises: a second cavity, the second cavity being disposed in the driving disk (8), the second cavity being communicated with the moving groove; A support column (12), the support column (12) being rotatably disposed on the inner bottom wall of the second cavity; A support plate (13), the support plate (13) being fixedly arranged on the support column (12); A third rotating shaft, the eccentric position of the support plate (13) is rotatably provided with the third rotating shaft, and a third connecting rod (14) is hingedly provided between the third rotating shaft and the second rotating shaft; A second torsion spring (15), wherein the second torsion spring (15) is sleeved on the support column (12), and two ends of the second torsion spring (15) are respectively fixedly connected to the second cavity side wall and the support plate (13).

4. A microcomputer-based ferromagnetic resonance elimination device according to claim 3, characterized in that: The clamping mechanism comprises: A first clamping plate (16), the first clamping plate (16) being fixedly arranged on the first positioning block (4) and the second positioning block (5); A clamping groove, wherein the first positioning block (4) and the second positioning block (5) are located on one side of the first clamping plate (16) and are respectively provided with the clamping groove; A second clamping plate (17), the second clamping plate (17) being slidably disposed in the clamping groove; A clamping spring (18), wherein the clamping spring (18) is fixedly arranged between the second clamping plate (17) and a side wall of the clamping groove.

5. A microcomputer-based ferromagnetic resonance elimination device according to claim 4, characterized in that: The side walls of the first clamping plate (16) and the second clamping plate (17) are respectively fixedly provided with anti-slip pads.

6. A microcomputer-based ferromagnetic resonance elimination device according to claim 5, characterized in that: A heat dissipation cylinder (19) is provided in communication with the side wall of the shell (1), a heat dissipation fan (20) is fixedly provided in the heat dissipation cylinder (19), a heat dissipation port is provided on the side wall of the shell (1), and a filter is fixedly provided in the heat dissipation port and in the heat dissipation cylinder (19).

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