Pressure-resistant lifting device

Abstract

The invention discloses a voltage-withstanding lifting device which comprises a controller, a push rod and a bedstead, the input end of the controller is connected with the positive electrode of voltage-withstanding equipment, the output end of the controller is connected with a push rod circuit, the push rod circuit is further connected with a bedstead circuit, and the bedstead circuit is connected with the negative electrode of voltage-withstanding equipment; the output end of the controller comprises a signal line S1 and a signal line S2, and a short circuit loop is formed between the signal line S1 and the signal line S2 through the voltage dividing piece and the outer pipe wall of the push rod. According to the invention, by arranging the resistance equal voltage division piece between the two signal lines, and forming a short circuit loop with the outer tube wall of the push rod, the damage of components caused by high voltage is effectively avoided, the maintenance and replacement cost of the components is reduced, and the safety during a voltage withstand test is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of high-voltage testing, and particularly to a voltage withstand improvement device. Background Art

[0002] In the voltage withstand test of a single electronic product, generally, the input line and the output line are short-circuited for testing. However, in the systematic overall voltage withstand test, it is necessary to connect all products and then conduct the voltage withstand test. Therefore, the output lines of the electronic products cannot be short-circuited. Thus, when conducting the voltage withstand test, there will be a voltage difference of several thousand volts between the output lines of the electronic products, causing the electronic components to spark and be damaged, and the leakage current to exceed the standard, resulting in potential safety hazards. Summary of the Invention

[0003] The purpose of the present invention is to overcome the disadvantages in the prior art that when conducting the overall voltage withstand test of multiple products, the electronic components are damaged by sparking and the leakage current exceeds the standard due to the inability to short-circuit the output lines, and to provide a voltage withstand improvement device.

[0004] The purpose of the present invention is realized through the following technical solutions: A voltage withstand improvement device includes a controller, a push rod, and a bed frame. The input end of the controller is connected to the positive pole of the device under voltage withstand test, the output end of the controller is connected to the push rod circuit, the push rod circuit is also connected to the bed frame circuit, and the bed frame circuit is connected to the negative pole of the voltage withstand device; the output end of the controller includes signal line S1 and signal line S2, and a short-circuit loop is formed between signal line S1 and signal line S2 through a voltage dividing component and the outer wall of the push rod.

[0005] In this solution, the outer wall of the push rod is a metal plane. Therefore, a short-circuit loop is formed between signal line S1 and signal line S2 through the voltage dividing component and the outer wall of the push rod. When conducting the voltage withstand test, the current passes through the short-circuit loop. Therefore, a large voltage difference will not be generated between signal line S1 and signal line S2, and the damage to the components is also avoided.

[0006] Preferably, the voltage dividing component is resistor R7 and resistor R8. One end of signal line S1 is connected to the power supply, and one end of signal line S2 is grounded; the other end of signal line S1 is connected to one end of resistor R7, the other end of resistor R7 is connected to the outer wall of the push rod, the other end of signal line S2 is connected to one end of resistor R8, the other end of resistor R8 is connected to the outer wall of the push rod, a switch SW1 is also provided between signal line S1 and signal line S2, and signal line S2 is also connected to the control circuit of the controller.

[0007] In this solution, after a short - circuit loop is formed between the signal line S1 and the signal line S2 through the voltage - dividing component and the outer wall of the push rod, since the path impedance of the loop part of the signal line S1 is much smaller than that of the loop part of the signal line S2, the electrostatic energy can be stably discharged through the path of the signal line S1, improving the system's electrostatic capacity. In the prior art during electrostatic discharge, because the discharge position of the static electricity is uncertain, the electrostatic energy may be discharged through the loop of the signal line S1 or the signal line S2. However, since the components in the signal line S2 loop are more sensitive and are easily affected by the electrostatic energy, resulting in component damage. The design of this solution avoids the deficiencies in the prior art and further prevents the damage of key components.

[0008] Preferably, the controller further includes a motor wire M + and a motor wire M -, and the control circuit in the controller forms a control loop through the signal line S1, the signal line S2, the motor wire M + and the motor wire M - to control the movement of the push rod.

[0009] Preferably, the control circuit includes a resistor R2, a resistor R4, a resistor R5 and a resistor R6. One end of the resistor R4 is connected to the signal line S2, the other end of the resistor R4 is connected to one end of the resistor R6, the other end of the resistor R6 is grounded, the other end of the resistor R4 is also connected to the base of the triode Q2, the collector of the triode Q2 is connected to one end of the resistor R2, the emitter of the triode Q2 is grounded, the other end of the resistor R2 is connected to the power supply, one end of the resistor R2 is also connected to one end of the resistor R5 and the base of the triode Q1, the other end of the resistor R5 is grounded, and the emitter of the triode Q1 is grounded.

[0010] Preferably, there are electrical clearances between the signal line S1 and the resistor R7, between the resistor R7 and the outer wall of the push rod, between the signal line S2 and the resistor R8, and between the resistor R8 and the outer wall of the push rod. The design of the electrical clearance avoids the breakdown of each component due to insufficient electrical clearance.

[0011] The beneficial effects of the present invention are as follows: By setting electronic components such as resistors between the two signal lines and forming a short - circuit loop together with the outer wall of the push rod, the present invention effectively avoids the damage of components caused by high voltage, reduces the cost of component repair and replacement, and improves the safety during the withstand voltage test. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a circuit principle block diagram of the present invention; Figure 2 is a circuit connection diagram of the present invention.

[0013] Wherein: 1. Controller, 2. Push rod, 3. Bed frame. DETAILED DESCRIPTION OF THE INVENTION

[0014] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more complete and comprehensive, and will fully convey the concept of the example embodiments to those skilled in the art.

[0015] In addition, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of the embodiments of this application. However, those skilled in the art will realize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. may be used. In other cases, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of this application.

[0016] The block diagrams shown in the drawings are only functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software form, or implemented in one or more hardware modules or integrated circuits, or implemented in different networks and / or processor devices and / or microcontroller devices.

[0017] Embodiment: A voltage withstand improvement device, as Figure 1 shown, includes a controller 1, a push rod 2, and a bed frame 3. The input end of the controller is connected to the positive pole of the voltage withstand device, the output end of the controller is connected to the push rod circuit, the push rod circuit is also connected to the bed frame circuit, and the bed frame circuit is connected to the negative pole of the voltage withstand device; the output end of the controller includes a signal line S1 and a signal line S2, and a short-circuit loop is formed between the signal line S1 and the signal line S2 through a voltage dividing component and the outer wall of the push rod.

[0018] In this solution, the outer wall of the push rod is a metal plane. Therefore, a short-circuit loop is formed between the signal line S1 and the signal line S2 through the voltage dividing component and the outer wall of the push rod. During the voltage withstand test, current passes through the short-circuit loop. Therefore, a large voltage difference will not be generated between the signal line S1 and the signal line S2, and damage to components is also avoided.

[0019] As Figure 2 shown, the voltage dividing component is a resistor R7 and a resistor R8. One end of the signal line S1 is connected to the power supply, and one end of the signal line S2 is grounded; the other end of the signal line S1 is connected to one end of the resistor R7, the other end of the resistor R7 is connected to the outer wall of the push rod, the other end of the signal line S2 is connected to one end of the resistor R8, the other end of the resistor R8 is connected to the outer wall of the push rod, a switch SW1 is also provided between the signal line S1 and the signal line S2, and the signal line S2 is also connected to the control circuit of the controller.

[0020] In this solution, after a short - circuit loop is formed between the signal line S1 and the signal line S2 through a voltage - dividing component and the outer wall of the push rod, since the path impedance of the loop part of the signal line S1 is much smaller than that of the loop part of the signal line S2, the electrostatic energy can be stably discharged through the path of the signal line S1, improving the electrostatic capacity of the system. In the prior art during electrostatic discharge, because the discharge position of the static electricity is uncertain, the electrostatic energy may be discharged through the loop of the signal line S1 or the signal line S2. However, since the components in the signal line S2 loop are more sensitive and are easily affected by the electrostatic energy, resulting in component damage. The design of this solution avoids the deficiencies in the prior art and further avoids the damage of key components.

[0021] During normal operation, the switch SW1 is closed. The 5.7V voltage passes through the resistor R3, then through the switch SW1, and returns to the ground terminal through the resistors R4 and R6. The triode Q2 is turned on and the triode Q1 is turned off. When the switch SW1 is opened, the voltage passes through the short - circuit loop and then returns to the ground terminal through the resistors R4 and R6. At this time, the triode Q2 is turned off and the triode Q1 is turned on.

[0022] The controller further includes a motor line M + and a motor line M -. The control circuit in the controller forms a control loop through the signal line S1, the signal line S2, the motor line M + and the motor line M - to control the movement of the push rod.

[0023] The control circuit includes a resistor R2, a resistor R4, a resistor R5 and a resistor R6. One end of the resistor R4 is connected to the signal line S2. The other end of the resistor R4 is connected to one end of the resistor R6. The other end of the resistor R6 is grounded. The other end of the resistor R4 is also connected to the base of the triode Q2. The collector of the triode Q2 is connected to one end of the resistor R2. The emitter of the triode Q2 is grounded. The other end of the resistor R2 is connected to the power supply. One end of the resistor R2 is also connected to one end of the resistor R5 and the base of the triode Q1. The other end of the resistor R5 is grounded. The emitter of the triode Q1 is grounded.

[0024] An electrical clearance is provided between the signal line S1 and the resistor R7, between the resistor R7 and the outer wall of the push rod, between the signal line S2 and the resistor R8, and between the resistor R8 and the outer wall of the push rod. The design of the electrical clearance avoids breakdown between components due to insufficient electrical clearance.

[0025] After considering the specification and practicing the disclosed embodiments here, those skilled in the art will readily think of other embodiments of the present application. The present application aims to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common general knowledge or conventional technical means in the technical field not disclosed in the present application.

[0026] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is only limited by the appended claims.

Claims

1. A pressure-resistant lifting device, characterized in that: It includes a controller, a push rod and a bed frame, the input end of the controller is connected to the positive electrode of the voltage-resistant equipment, the output end of the controller is connected to the push rod circuit, the push rod circuit is also connected to the bed frame circuit, and the bed frame circuit is connected to the negative electrode of the voltage-resistant equipment; the output end of the controller includes a signal line S1 and a signal line S2, and a short-circuit loop is formed between the signal line S1 and the signal line S2 through a voltage divider and the outer tube wall of the push rod.

2. A pressure-resistant lifting device according to claim 1, characterized in that: The voltage divider is resistor R7 and resistor R8, one end of the signal line S1 is connected to the power supply, and one end of the signal line S2 is grounded; the other end of the signal line S1 is connected to one end of the resistor R7, and the other end of the resistor R7 is connected to the outer tube wall of the push rod, the other end of the signal line S2 is connected to one end of the resistor R8, and the other end of the resistor R8 is connected to the outer tube wall of the push rod, and a switch SW1 is also provided between the signal line S1 and the signal line S2, and the signal line S2 is also connected to the control circuit of the controller.

3. A pressure-resistant lifting device according to claim 2, characterized in that: The controller also includes a motor line M+ and a motor line M-. The control circuit in the controller controls the movement of the push rod by forming a control loop through the signal line S1, the signal line S2, the motor line M+ and the motor line M-.

4. A pressure-resistant lifting device according to claim 2 or 3, characterized in that: The control circuit includes resistor R2, resistor R4, resistor R5 and resistor R6, one end of resistor R4 is connected to signal line S2, the other end of resistor R4 is connected to one end of resistor R6, the other end of resistor R6 is grounded, the other end of resistor R4 is also connected to the base of transistor Q2, the collector of transistor Q2 is connected to one end of resistor R2, the emitter of transistor Q2 is grounded, the other end of resistor R2 is connected to a power supply, one end of resistor R2 is also connected to one end of resistor R5 and the base of transistor Q1, the other end of resistor R5 is grounded, and the emitter of transistor Q1 is grounded.

5. A pressure-resistant lifting device according to claim 2, characterized in that: Electrical gaps are provided between the signal line S1 and the resistor R7, between the resistor R7 and the outer tube wall of the push rod, between the signal line S2 and the resistor R8, and between the resistor R8 and the outer tube wall of the push rod.

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