Mechanical adjustment type fault reproduction and positioning test device

Abstract

A mechanical adjustment type fault reproduction and positioning test device disclosed by the present invention comprises a main body frame, a panel is fixed on the front surface of the main body frame, a conductive seat is arranged at the lower part of the left side of the panel, and a movable conductive assembly is arranged on the panel above the conductive seat. A horizontal sliding piece is arranged at the center of the surface of the panel, a simulation sensor probe is arranged on the horizontal sliding piece, an induction target piece is arranged on the portion, located on the right side of the simulation sensor probe, of the panel, wire bases are symmetrically arranged on the right side of the surface of the panel, and the wire bases are connected through an arc-shaped wire. A wire breaking driving piece is arranged between the panel and the wire, and an ejector rod is connected into the wire breaking driving piece in a sliding mode. The device adopts a pure mechanical adjusting structure, abandons a traditional electric control fault injection module and complex programs, realizes fault regulation and control through mechanical parts such as the screw rod, the sliding seat adjusting piece and the eccentric wheel, has no electronic interference hidden danger, and is high in durability of the parts and low in maintenance cost.

Description

Technical Field

[0001] This invention relates to the field of locomotive electrical equipment testing, specifically a mechanically adjustable fault reproduction and location testing device. Background Technology

[0002] Currently, the commonly used testing devices in the field of railway locomotive electrical fault detection and training mostly adopt electronically controlled fault injection, relay matrix switching, or software simulation modes. These devices have many drawbacks in practical applications: Relying on electronic components, programmable switches, and complex control programs to simulate faults is not only cumbersome and costly, but also makes electronic components susceptible to environmental interference and prone to malfunctions, resulting in poor fault reproduction stability. Existing devices mostly simulate hard faults such as on / off switching, failing to accurately reproduce common soft faults in the field, such as gradual changes in contact pressure, fine-tuning of sensor gaps, and wire fatigue breakage. The severity of faults cannot be quantified, and the device has low consistency with actual locomotive operating conditions. Some devices have a fixed overall structure, making it impossible to adjust the operating posture according to the operator's habits, resulting in insufficient flexibility. Electrically controlled fault injection modules are difficult to maintain, have a short lifespan, and are prone to signal interference in pure electrical control mode, affecting the accuracy of fault location. These methods fail to meet the actual needs of locomotive electrical fault training, inspection verification, and accurate reproduction. Therefore, the need for a test device that is simple in structure, easy to operate, capable of reproducing faults, and purely mechanically adjustable has become an urgent technical problem to be solved in this field. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the purpose of this invention is to provide a mechanically adjustable fault reproduction and location testing device.

[0004] The technical solution adopted by this invention to solve its technical problem is as follows: a mechanically adjustable fault reproduction and location test device, comprising a main frame placed on the ground, a panel for supporting components fixed on the front surface of the main frame, a conductive seat for circuit switching arranged on the lower left side of the panel, a movable conductive component arranged above the conductive seat on the panel, a screw for controlling the fault magnitude arranged above the movable conductive component on the panel, horizontal sliding members symmetrically arranged at the center of the surface of the panel, an analog sensor probe for sensing signals arranged on the horizontal sliding member, a sensing target plate arranged on the right side of the panel on the analog sensor probe, wire seats symmetrically arranged on the right side of the surface of the panel, the wire seats being connected by arc-shaped wires, a wire breakage drive component arranged between the panel and the wires, a push rod slidably connected in the wire breakage drive component, one end of the push rod being in contact with the wire, the other end of the push rod being connected to the wire breakage drive component through a push rod auxiliary component, and a measuring terminal arranged at the bottom of the front surface of the panel.

[0005] Furthermore, the main frame includes a frame base placed on the ground, a frame slidably connected to the top of the frame base, the frame being connected to the panel, a frame adjusting component rotatably connected to the center of the frame base, a frame moving component threadedly connected to the outer wall of the frame adjusting component, and the top end of the frame moving component being connected to the frame.

[0006] Furthermore, the active conductive component includes a conductive pin mounted on the panel via an L-shaped bracket. An insulating block is fixed to the top of the conductive pin, and a pin reset component is sleeved on the outer wall of the conductive pin. The two ends of the pin reset component are respectively connected to the L-shaped bracket and the insulating block.

[0007] Furthermore, the outer wall of the screw is connected to the panel through a support member, the support member has a threaded hole that matches the screw thread, and the top outer wall of the screw has a scale.

[0008] Furthermore, the horizontal sliding component includes a horizontal guide rail symmetrically fixed at the center of the panel, a sliding seat slidably connected to the outer wall of the horizontal guide rail, the back center of the sliding seat being connected to the panel via a sliding seat adjustment component, the front surface of the sliding seat being connected to an analog sensor probe, a scale plate being provided on the panel above the horizontal guide rail, and a pointer matching the scale plate being provided on the sliding seat.

[0009] Furthermore, the wire breakage drive includes a protective cover fixed to the right side of the panel surface. An eccentric wheel, which is rotatably connected inside the protective cover, is similar to the reciprocating motion of the drive rod. An eccentric wheel driver is provided at the output end of the eccentric wheel, and the protective cover is slidably connected to the drive rod.

[0010] Furthermore, a strip-shaped groove is provided at the connection between the top rod and the wire to prevent the wire from shifting.

[0011] The beneficial effects of this invention are: Simplified and reliable structure, highly practical: This device adopts a purely mechanical adjustment structure, abandoning the traditional electronic control fault injection module and complex program. Fault control is achieved through mechanical components such as screws, sliding seat adjustment parts, and eccentric wheels. There is no risk of electronic interference. The components are durable and have low maintenance costs, making it suitable for long-term, high-frequency training and testing scenarios.

[0012] Fault reproduction can be quantified: relying on the scale at the top of the screw, the scale plate and the pointer can be used to precisely control the contact pressure between the conductive pin and the conductive seat, and simulate the distance between the sensor probe and the sensing target. This enables the quantitative reproduction of gradual faults such as loose connection and signal attenuation. The eccentric wheel drives the push rod 21 to push the wire back and forth, which can realistically simulate the fatigue wire breakage fault of the wire harness, perfectly matching the actual fault mode on the locomotive site.

[0013] High adaptability: The frame and panel can be slid back and forth through the frame adjustment and frame moving parts, and the operating posture can be freely adjusted to meet the usage habits of different operators, thereby improving operating comfort and testing convenience.

[0014] Fault location and intuitive detection: The bottom of the panel is equipped with a dedicated measurement terminal, which can be directly connected to external testing instruments to quickly collect the electrical parameters of each faulty module without disassembling the circuit. It can locate the fault point, greatly improve the efficiency of fault diagnosis, and has the dual functions of practical training and engineering maintenance.

[0015] Safety protection and stable operation: The outside of the wire breakage drive component is equipped with a protective cover to prevent operators from contacting moving parts and causing safety hazards. The push rod auxiliary component, push pin reset component 9 and other components play a buffering and guiding role to prevent the components from jamming or shifting, ensuring the smooth operation of the entire test process and extending the overall service life of the device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the present invention.

[0017] Figure 2 yes Figure 1 Detailed cross-sectional view of the connection structure of the central protective cover.

[0018] Figure 3 yes Figure 1 Detailed front view of the connection structure.

[0019] Figure 4 yes Figure 3 Detailed diagram of the left-side connecting structure.

[0020] Figure 5 yes Figure 3 Detailed diagram of the right-side connection structure.

[0021] Figure 6 yes Figure 3 A top-down view of the connection structure details.

[0022] Figure 7 yes Figure 3 Detailed side view of the connecting structure of the middle sliding seat.

[0023] Figure 8 yes Figure 6 Enlarged detail of the connection structure at point A in the middle.

[0024] Explanation of reference numerals in the attached drawings: 1. Frame base; 2. Frame; 3. Panel; 4. Frame moving part; 5. Frame adjusting part; 6. Conductive seat; 7. Conductive pin; 8. Insulating pressure block; 9. Pin reset part; 10. Screw; 11. Horizontal guide rail; 12. Sliding seat; 13. Sliding seat adjusting part; 14. Analog sensor probe; 15. Sensing target; 16. Scale plate; 17. Wire seat; 18. Wire; 19. Protective cover; 20. Eccentric wheel; 21. Push rod; 22. Push rod auxiliary part; 23. Eccentric wheel driver; 24. Measuring terminal 24. Detailed Implementation

[0025] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0026] See Figures 1-8 This is a schematic diagram of the structure of the present invention, a mechanically adjustable fault reproduction and location test device, including a main frame placed on the ground. The main frame serves as the load-bearing support structure of the entire device, playing the role of stabilizing the base and adjusting the overall posture, and ensuring the stability of the device operation. The front surface of the main frame is fixed with a panel 3 for supporting components. The panel 3 is a flat, rigid, insulating board, which serves as the mounting carrier for all mechanical adjustment mechanisms and electrical components.

[0027] A conductive base 6 for circuit connection and disconnection is located on the lower left side of panel 3. The conductive base 6 is a cylindrical conductive metal component made of brass with excellent conductivity. It is fixedly installed on the surface of panel 3 and firmly welded to the simulated electrical circuit wires, serving as a fixed conductive contact of the electrical circuit to realize the basic circuit conduction function. Above the conductive base 6, panel 3 has a movable conductive component that can move back and forth in the vertical direction. By adhering to and separating from the conductive base 6, the circuit conduction state is changed, simulating electrical faults such as poor contact, loose connection, and open circuit. Above the movable conductive component, panel 3 has a screw 10 for controlling the fault severity. The screw 10 is a long strip-shaped metal rod with uniform threads on the outer wall. The rotational motion is converted into linear thrust, which controls the displacement amplitude of the movable conductive component, thereby quantifying and controlling the severity of the fault and achieving gradual adjustment from slight loose connection to complete open circuit.

[0028] A horizontal sliding member is symmetrically arranged at the center of the surface of panel 3. The horizontal sliding member is a linear guide sliding structure, which limits the movement trajectory to a horizontal straight line to avoid deviation and jamming. An analog sensor probe 14 for sensing signals is arranged on the horizontal sliding member. The analog sensor probe 14 is a detection component for simulating locomotive sensors, which restores the signal transmission and reception characteristics of real vehicle sensors and is used to simulate the working state of various inductive sensors of locomotives. A sensing target plate 15 is arranged on the right side of the analog sensor probe 14 on panel 3. The sensing target plate 15 is a metal sensing plate adapted to the analog sensor probe 14. It is fixedly installed and its position remains unchanged. As a signal sensing reference component, the sensor offset, signal attenuation, and loss faults are simulated by the change of the distance between the target plate and the analog sensor probe 14.

[0029] On the right side of panel 3, symmetrically arranged wire holders 17 are insulated terminal components, arranged symmetrically in two groups, upper and lower, to fix the ends of wires and transfer electrical signals, ensuring a stable and reliable wire connection. The wire holders 17 are connected by arc-shaped wires 18. The wires 18 are flexible wires of the same specifications as the locomotive wiring harness, naturally forming an arc-shaped suspended section to simulate the installation form of the locomotive's onboard wiring harness and withstand reciprocating bending forces to reproduce fatigue wire breakage faults. A wire breakage drive component is installed between panel 3 and wires 18. This mechanical drive component provides reciprocating pushing force to drive the push rod. 21. The wire 18 is squeezed to simulate the vibration and bumpy environment of a vehicle during operation, inducing a wire breakage fault inside the wire 18. A push rod 21 is slidably connected in the wire breakage drive component. The push rod 21 is a long strip of rigid insulating rod that slides linearly back and forth to transmit the power of the wire breakage drive component, avoiding conductive interference with the wire 18. One end of the push rod 21 is in contact with the wire 18, and the other end of the push rod 21 is connected to the wire breakage drive component through the push rod auxiliary component 22. The push rod auxiliary component 22 is an elastic guide connector that plays the role of limiting guidance, buffering and shock absorption, preventing the push rod 21 from jamming, and ensuring a flexible connection between the push rod 21 and the wire breakage drive component, thus extending the service life of the component.

[0030] The bottom of the front surface of panel 3 is provided with measurement terminals 24. Measurement terminals 24 are multiple sets of independently insulated wiring sockets, which correspond to the electrical nodes of each functional module. They serve as a general interface for external testing instruments, making it convenient for devices such as multimeters and oscilloscopes to be connected, so as to realize fault signal detection and location.

[0031] The main frame includes a frame base 1 placed on the ground. The frame base 1 is a base with anti-slip pads on the bottom to increase the contact area with the ground and prevent the device from slipping. At the same time, it provides installation space for internal adjustment components. A frame 2 is slidably connected to the top of the frame base 1. The frame 2 is a vertical support frame that is fixedly connected to the panel 3 and drives the panel 3 to move back and forth synchronously to adapt to the operating habits and inspection angles of different operators. The frame 2 and the panel 3 are connected by bolts for rigid fixation to ensure that there is no relative wobbling between the frame 2 and the panel 3.

[0032] A frame adjustment component 5 is rotatably connected to the center of the frame base 1. The frame adjustment component 5 is a manually rotating adjustment rod with a transmission thread on its outer wall. The operator can manually rotate it to drive the relevant components to move, realizing stepless adjustment of the front and back position of the frame 2. A frame moving component 4 is threadedly connected to the outer wall of the frame adjustment component 5. The frame moving component 4 is a threaded transmission block that engages with the frame adjustment component 5, converting the rotational motion of the frame adjustment component 5 into linear motion, thereby driving the frame 2 to slide smoothly back and forth. The top of the frame moving component 4 is connected to the frame 2 to ensure stable transmission of power and adapt to the sliding trajectory of the frame 2.

[0033] The movable conductive component includes a conductive pin 7 mounted on panel 3 via an L-shaped bracket. The L-shaped bracket is an insulating support component fixed to the surface of panel 3, providing vertical guidance and support for the conductive pin 7. The conductive pin 7 is a cylindrical metal rod, coaxially corresponding to the conductive base 6, and can move up and down to achieve contact and conduction or separation and disconnection with the conductive base 6. An insulating pressure block 8 is fixed to the top of the conductive pin 7. The insulating pressure block 8 is an insulating block-shaped component that isolates the current conduction between the conductive pin 7 and the screw 10, only transmitting the downward pressure of the screw 10 to avoid electrical signal interference. A pin reset component 9 is sleeved on the outer wall of the conductive pin 7. The pin reset component 9 is a compression helical spring, and its two ends are respectively connected to the L-shaped bracket and the insulating pressure block. Block 8 is connected and always applies an upward elastic reset force, which drives the conductive pin 7 to move up and reset automatically, realizing the automatic restoration of the circuit after the fault is cleared. The outer wall of the screw 10 is connected to the panel through a support member. The support member is an insulating support fixed on the surface of the panel 3, which serves to vertically support the screw 10 and prevent the screw 10 from tilting or shaking. The support member has a threaded hole that matches the thread of the screw 10. The threaded hole engages with the screw 10 to ensure that the screw 10 rotates smoothly and lifts and improves thrust control. The top outer wall of the screw 10 is marked with a scale. The scale is a uniform ring scale mark, which intuitively displays the rotation amplitude and downward pressure of the screw 10, realizes the quantitative labeling of the fault degree, and facilitates the reproduction of standard fault conditions.

[0034] The horizontal sliding component includes two parallel linear guide rails 11 symmetrically fixed at the center of panel 3, providing bidirectional guidance to ensure a straight and unbiased sliding trajectory. A sliding seat 12 is slidably connected to the outer wall of the horizontal guide rails 11. The sliding seat 12 is a sliding base that slides and adapts to the horizontal guide rails 11, driving the analog sensor probe 14 to move smoothly in the horizontal direction. The center of the back of the sliding seat 12 is connected to panel 3 via a sliding seat adjustment component 13, which is a manually rotating screw that converts rotational motion into horizontal thrust, controlling the movement of the sliding seat 12. The displacement distance is determined by connecting the front surface of the sliding seat 12 to the analog sensor probe 14 using bolt fastening. This ensures that the analog sensor probe 14 moves synchronously with the sliding seat 12 without loosening or misalignment. The panel 3 is located above the horizontal guide rail 11 and is equipped with a scale plate 16. The scale plate 16 is a marking plate with length graduations, indicating the displacement distance value. The sliding seat 12 is equipped with a pointer that matches the scale plate 16. The pointer moves synchronously with the sliding seat 12, and together with the scale plate 16, it visually displays the distance between the analog sensor probe 14 and the sensing target 15, quantifying the degree of sensor offset fault.

[0035] The wire breakage drive includes a protective cover 19 fixed to the right side of the panel 3. The protective cover 19 is an insulated protective shell that encloses the internal moving parts, serving to prevent dust, accidental contact, and operator safety. Inside the protective cover 19, an eccentric wheel 20 is rotatably connected to drive the push rod 21 to reciprocate. The eccentric wheel 20 is a non-centered rotating wheel that generates periodic height differences during rotation, providing reciprocating thrust to the push rod 21. An eccentric wheel driver 23 is provided at the output end of the eccentric wheel 20, which is a manual rotary knob. Alternatively, a micro drive motor can be used to provide power for the rotation of the eccentric wheel 20, enabling continuous or intermittent drive. The protective cover 19 is slidably connected to the push rod 21. The inner wall of the protective cover 19 is provided with a vertical guide groove, which limits the push rod 21 to only perform vertical reciprocating motion and avoids radial offset. The connection between the push rod 21 and the wire 18 is provided with a strip-shaped groove to prevent the wire 18 from offset. The strip-shaped groove has an arc-shaped groove structure that fits snugly against the outer wall of the wire 18, limiting the left and right movement of the wire 18 and ensuring the pushing position of the push rod 21, thus stably reproducing the wire fatigue breakage fault.

[0036] When using this invention: Before the experiment begins, first rotate the frame adjusting component 5, which drives the frame moving component 4 to perform linear transmission, thereby driving the frame 2 to slide back and forth along the frame base 1, adjusting the panel 3 to a suitable operating posture, completing the preliminary preparation of the device. Then, proceed to the fault reproduction stage. Rotate the screw 10 to make it rise and fall within the support component, pressing down or releasing the insulating block 8. In conjunction with the elastic force of the ejector pin reset component 9, drive the conductive ejector pin 7 to move up and down, changing the contact pressure between the conductive ejector pin 7 and the conductive seat 6, thereby reproducing circuit connection and open circuit faults. At the same time, the degree of fault is quantified by the scale on the top of the screw 10. Then rotate... The sliding seat adjustment component 13 drives the sliding seat 12 to slide horizontally along the horizontal guide rail 11, causing the simulated sensor probe 14 to move closer to or further away from the sensing target plate 15. The distance is controlled by the pointer and scale plate 16 on the sliding seat 12 to reproduce the sensor offset and signal loss faults. Then, the eccentric wheel driver 23 is controlled to drive the eccentric wheel 20 to rotate, so that the eccentric wheel 20 periodically pushes the push rod 21 to slide vertically back and forth along the protective cover 19. The strip groove at the top of the push rod 21 continuously pushes the wire 18 to bend back and forth. The two ends of the wire 18 are fixed by the wire seat 17 to simulate the wire harness vibration fatigue and wire breakage fault.

[0037] After the fault reproduction is completed, the testing instrument is connected to the measuring terminal 24 at the bottom of panel 3 to collect the parameters of each electrical circuit node. Based on the abnormal parameters, the fault location is accurately located. After the test is completed, the screw 10 and the sliding seat adjustment component 13 are reversed and the eccentric wheel driver 23 is stopped. The conductive pin 7 is reset under the action of the pin reset component 9. The simulated sensor probe 14 returns to its position, the push rod 21 stops moving, and the push rod auxiliary component 22 ensures smooth sliding. Finally, the entire device is restored to its initial normal state, and the complete fault reproduction and location test process is completed.

Claims

1. A mechanically regulated fault reproduction and localization test apparatus, characterized by, The utility model provides a kind of circuit breaker, including the main body frame placed on ground, the front surface of the main body frame is fixed with the panel (3) of component bearing, the left side of the panel (3) is provided with the electrically-conductive seat (6) of circuit on-off slightly below, the panel (3) is provided with movable electrically-conductive component above electrically-conductive seat (6), the panel (3) is provided with screw rod (10) for controlling fault size above movable electrically-conductive component, the surface center of the panel (3) is symmetrically provided with horizontal slide, the horizontal slide is provided with analog sensor probe (14) for inductive signal, the panel (3) is provided with inductive target sheet (15) right side of analog sensor probe (14), the surface right side of the panel (3) is symmetrically provided with wire seat (17), wire seat (17) is connected by arc wire (18) between, wire breaking drive element is provided between the panel (3) and wire (18), the top rod (12) is slidably connected in wire breaking drive element, one end of the top rod (12) is attached with wire (18), the other end of the top rod (12) is connected with wire breaking drive element by top rod auxiliary part (22), the front surface of the panel (3) is provided with measuring terminal (24) most below.

2. The mechanical adjustment fault reproduction and location test device according to claim 1, characterized in that: The main body frame includes a frame base (1) placed on the ground, a frame (2) is slidably connected above the frame base (1), the frame (2) is connected with the panel (3), a frame adjusting member (5) is rotatably connected at the center of the inside of the frame base (1), a frame moving member (4) is threadedly connected to the outer wall of the frame adjusting member (5), and the top end of the frame moving member (4) is connected with the frame (2).

3. The mechanical adjustment fault reproduction and location test device of claim 1, wherein: The movable electrically-conductive component includes a conductive thimble (7) mounted on the panel (3) through an L-shaped support, an insulating block (8) is fixed to the top end of the conductive thimble (7), and a thimble reset member (9) is sleeved to the outer wall of the conductive thimble (7), and the two ends of the thimble reset member (9) are respectively connected with the L-shaped support and the insulating block (8).

4. The mechanical adjustment fault reproduction and location test device of claim 1, wherein: The outer wall of the screw rod (10) is connected with the panel through a support, a threaded hole matching the screw thread of the screw rod (10) is arranged in the inside of the support, and a scale is arranged on the top end outer wall of the screw rod (10).

5. The mechanical adjustment fault reproduction and location test device of claim 1, wherein: The horizontal slide includes horizontal guide rails (11) symmetrically fixed at the center of the panel (3), a sliding seat (12) is slidably connected to the outer wall of the horizontal guide rails (11), the back center of the sliding seat (12) is connected with the panel (3) through a sliding seat adjusting member (13), the front surface of the sliding seat (12) is connected with the analog sensor probe (14), a scale plate (16) is arranged above the horizontal guide rails (11) of the panel (3), and a pointer matching the scale plate (16) is arranged on the sliding seat (12).

6. The mechanical adjustment fault reproduction and location test device of claim 1, wherein: The wire breakage drive includes a protective cover (19) fixed on the right side of the panel (3). The inside of the protective cover (19) is rotatably connected to an eccentric wheel (20) that reciprocates with the drive rod (21). An eccentric wheel driver (23) is provided at the output end of the eccentric wheel (20), and the protective cover (19) is slidably connected to the drive rod (21).

7. The mechanical adjustment fault reproduction and location test device of claim 1, wherein: The connection between the top rod (21) and the wire (18) is provided with a strip groove to prevent the wire (18) from shifting.

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