Combined type test tool for non-insurance type terminal of PLC (Programmable Logic Controller) cabinet body

Abstract

The invention discloses a combined testing tool for a non-insurance terminal of a PLC cabinet body, and relates to the technical field of PLC testing. In order to solve the technical problems that in the prior art, existing PLC testing work mainly depends on manual operation, efficiency is low, the error rate is high, consequently, the testing cost is increased, the testing period is prolonged, and even the overall progress of a project is affected, the technical scheme provided by the invention is that a combined testing tool for a non-insurance type terminal of a PLC cabinet body is provided. The testing tool comprises a non-insurance terminal, the non-insurance terminal comprises a base and a contact, the base is of a cuboid structure, a through hole is formed in the side wall, with the smallest surface area, of the cuboid structure, and the contact is of a cylindrical structure and is telescopically arranged in the through hole; the number of the non-insurance terminals is at least two, and the non-insurance terminals are uniformly arranged on the terminal support. The method is suitable for being applied to PLC testing work.

Description

Technical Field

[0001] The invention relates to the technical field of PLC testing, and in particular to a PLC cabinet non-insurance terminal combined testing tool. Background Art

[0002] In modern industrial automation systems, PLC (Programmable Logic Controller) is widely used in various automation control and monitoring tasks, and is the core component to ensure system stability and efficiency. Therefore, PLC testing is crucial to the normal operation of the entire industrial automation system. The accuracy and efficiency of the test directly affect the reliability, safety and operating cost of the system. However, the existing PLC testing process still has many limitations and technical difficulties, and needs to be improved urgently.

[0003] At present, PLC testing mainly relies on manual operation, which is complex and error-prone. First, technicians need to manually set the test program according to the specific configuration of the PLC cabinet to be tested. This process usually requires an in-depth understanding of the specifications, functions and interfaces of each PLC module to ensure that the test program can cover all possible working scenarios. However, due to the wide variety and complex configuration of PLC modules, technicians not only need to spend a lot of time setting up the test program, but also easily lead to incomplete coverage or setting errors due to negligence of details.

[0004] After the test program is set up, the tester needs to manually connect the test program with each PLC module according to the program requirements. This process is extremely challenging. Due to its complexity, it has a low fault tolerance rate. A slight mistake may lead to connection errors or missed connections, thus affecting the accuracy of the test results. This manual connection process is particularly time-consuming in actual operation, and usually requires at least two technicians to work together, which increases labor costs and operation time. At the same time, due to the large number of manual operations during the test process, any irregular operation may cause system failures, further reducing the reliability of the test.

[0005] In addition, as the scale and complexity of industrial automation systems continue to increase, traditional manual PLC testing methods can no longer meet the growing demand. During large-scale PLC system testing, problems such as low efficiency and high error rate of manual operation become more prominent, resulting in increased testing costs, longer testing cycles, and even affecting the overall progress of the project.

[0006] In summary, these defects of the existing technology seriously affect the efficiency and reliability of PLC testing, especially in industrial scenarios with increasing automation. Therefore, there is an urgent need for a solution that can simplify the PLC testing process, improve test accuracy and efficiency, reduce reliance on manual operations, reduce the risk of errors, and save manpower and time costs, thereby improving overall testing performance and ensuring the stability and efficiency of industrial automation systems. Summary of the invention

[0007] In order to solve the technical problems existing in the prior art, the existing PLC testing work mainly relies on manual operation, which is inefficient and has a high error rate, resulting in increased testing costs, extended testing cycles, and even affecting the overall progress of the project, the technical solution provided by the present invention is:

[0008] A PLC cabinet non-fuse terminal combined test tool, the test tool comprising:

[0009] Non-fuse terminals,

[0010] The non-insurance terminal includes a base and a contact,

[0011] The base is a rectangular parallelepiped structure, and a through hole is provided on a side wall of the rectangular parallelepiped structure with the smallest surface area.

[0012] The contact is a cylindrical structure and is telescopically arranged in the through hole;

[0013] There are at least two non-insurance terminals, evenly arranged

[0014] on the terminal bracket.

[0015] Furthermore, a preferred embodiment is provided, wherein the terminal support is a rectangular parallelepiped structure.

[0016] Furthermore, a preferred embodiment is provided, wherein a hole is provided on the side wall of the terminal support, a protrusion is provided on the side wall of the non-safety terminal, and the non-safety terminal and the terminal support are connected by interference fit of the hole and the protrusion.

[0017] Furthermore, a preferred embodiment is provided, in which an edge of the rectangular parallelepiped structure close to the contact and away from the terminal support is chamfered.

[0018] Furthermore, a preferred embodiment is provided, wherein the contact is connected to the base via a spring.

[0019] Furthermore, a preferred embodiment is provided, wherein the axis of the spring coincides with the axis of the contact.

[0020] Furthermore, a preferred embodiment is provided, which also includes a back clip, which is a rectangular structure and is detachably fixed to a side wall of the terminal bracket away from the non-safety terminal. A protrusion is provided at one end of the back clip close to the non-safety terminal, and the protrusion faces the terminal bracket.

[0021] Furthermore, a preferred embodiment is provided, wherein the back clip is connected to the terminal bracket via a cover plate, and after the cover plate is detachably connected to the back clip, it is detachably connected to the terminal bracket.

[0022] Based on the same inventive concept, the present invention also provides a non-safety test plug, including the test tooling and an adapter, wherein the adapter is respectively connected to the at least two non-safety terminals through a wire, and the wire penetrates from one end of the through hole away from the contact and is connected to the contact.

[0023] Based on the same inventive concept, the present invention also provides a non-safety type PLC test cabinet, wherein the cabinet is connected to the PLC to be tested via the non-safety type test plug.

[0024] Compared with the prior art, the technical solution provided by the present invention is beneficial in that:

[0025] The present invention provides a PLC cabinet non-insurance terminal combined test fixture, which can be quickly connected to the terminal block to be tested, and does not require manual auxiliary fixation after connection. And through the detachable design, 8 groups of channels (16 terminals) can be measured at one time. Independent non-insurance terminals, each terminal can be replaced or removed separately, and each terminal can be wired separately.

[0026] The present invention provides a PLC cabinet non-insurance terminal combination test fixture, in which the contact is set as a retractable cylindrical structure and extends through a through hole. This design improves the operability and flexibility of the test fixture. When testing, the user can easily extend or retract the contact to adapt to different test scenarios. This structural design makes the connection more flexible and reduces the risk of miscontact or damage.

[0027] The present invention provides a PLC cabinet non-insurance terminal assembly test fixture, wherein the rectangular structure of the base and the terminal bracket makes the terminal bracket more stable as a whole. This stable geometric structure provides better support performance, ensures that the terminal will not be easily displaced or loosened during use, and improves the reliability of the device.

[0028] The present invention provides a PLC cabinet non-insurance terminal assembly test fixture, which connects the non-insurance terminal and the terminal bracket through the interference fit of the hole and the protrusion, which not only increases the firmness of the connection, but also simplifies the assembly process. This mechanical structure matching method provides a high-precision fixing effect and avoids potential problems caused by welding or bonding, such as unstable connection or material deformation.

[0029] The present invention provides a PLC cabinet non-insurance terminal assembly test fixture. The chamfer design on the edge close to the contact can reduce friction and wear during operation, especially during plugging and unplugging operations, avoiding potential damage to equipment or users by sharp edges. This chamfer design not only improves the safety of use, but also prolongs the service life of the terminal.

[0030] The present invention provides a PLC cabinet non-insurance terminal assembly test fixture, in which the design of the contact connected to the base through a spring enhances the elasticity and recoverability of the terminal. The spring can provide stable elastic support for the contact, ensuring that the contact can be quickly reset during multiple plugging or testing processes and maintain a good contact state.

[0031] The present invention provides a PLC cabinet non-insurance terminal assembly test fixture. The design of the coincidence of the spring and contact axis ensures the uniformity and stability of the contact force, further improving the durability and contact performance of the terminal. During use, the force of the spring will not be offset or uneven, thereby improving the response speed and accuracy of the contact.

[0032] The present invention provides a PLC cabinet non-insurance terminal combined test fixture, and the detachable back clip design improves the convenience of equipment installation and maintenance. Users can easily remove or replace the back clip as needed to adapt to different application scenarios. This design effectively improves the versatility and adaptability of the terminal and is suitable for a variety of operating environments.

[0033] The present invention provides a PLC cabinet non-insurance terminal combined test fixture, in which the back clip is connected to the terminal bracket through a cover plate, and the connection method is detachable. This structural design makes the assembly and disassembly of the device easier, while enhancing the integrity and firmness of the structure. When it is necessary to replace components, users can easily operate, reducing maintenance costs.

[0034] The present invention provides a PLC cabinet non-insurance terminal assembly test fixture, the test fixture and the adapter are connected by wires and pass through the through hole. This design makes the wiring of the wires more reasonable and reduces interference and loss in the electrical connection. The wires enter from the end of the through hole away from the contact, which helps to avoid bending or damage of the wires.

[0035] The present invention provides a PLC cabinet non-insurance terminal combined test fixture, and the design of the non-insurance test plug connected to the PLC through the test fixture and the adapter provides an efficient and stable signal transmission path. During the test process, the integrity and accuracy of the test signal can be ensured, and the error rate is reduced. This design has advantages in the existing PLC test scheme.

[0036] The present invention provides a PLC cabinet non-insurance terminal combined test tool, which is suitable for use in PLC testing work. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a three-dimensional schematic diagram of a PLC cabinet non-fuse terminal combination test tool;

[0038] Figure 2 for Figure 1 Side view of

[0039] Figure 3 for Figure 1 A top view of

[0040] Figure 4 for Figure 1 Bottom view of

[0041] Figure 5 for Figure 1 Rear view of

[0042] Figure 6 for Figure 1 Exploded diagram of

[0043] Figure 7 It is a three-dimensional schematic diagram of the back clip and the cover plate.

[0044] Among them, 1 represents a non-fuse terminal, 2 represents a terminal bracket, 3 represents a back clip, and 4 represents a cover. DETAILED DESCRIPTION

[0045] In order to make the advantages and benefits of the technical solution provided by the present invention more clearly reflected, the technical solution provided by the present invention is now further described in detail with reference to the accompanying drawings, specifically:

[0046] Embodiment 1: This embodiment provides a PLC cabinet non-fuse terminal combination test tool, the test tool comprising:

[0047] Non-insurance terminal 1,

[0048] The non-insurance terminal 1 includes a base and a contact.

[0049] The base is a rectangular parallelepiped structure, and a through hole is provided on a side wall of the rectangular parallelepiped structure with the smallest surface area.

[0050] The contact is a cylindrical structure and is telescopically arranged in the through hole;

[0051] There are at least two non-insurance terminals 1, which are evenly arranged.

[0052] On terminal bracket 2.

[0053] Embodiment 2: This embodiment further limits the non-fuse terminal assembly test fixture for a PLC cabinet provided in Embodiment 1, and the terminal bracket 2 is a rectangular parallelepiped structure.

[0054] Embodiment 3. This embodiment is a further limitation of a PLC cabinet non-safety terminal combination test tool provided in embodiment 1. The terminal bracket 2 has a hole on its side wall, and the non-safety terminal 1 has a protrusion on its side wall. The non-safety terminal 1 and the terminal bracket 2 are connected by interference fit of the hole and the protrusion.

[0055] Embodiment 4: This embodiment further limits the non-fuse terminal assembly test fixture for a PLC cabinet provided in Embodiment 1. On the rectangular structure, an edge close to the contact and away from the terminal bracket 2 is chamfered.

[0056] Embodiment 5: This embodiment further limits the PLC cabinet non-safety terminal assembly test fixture provided in Embodiment 1, and the contact is connected to the base through a spring.

[0057] Embodiment 6: This embodiment further limits the PLC cabinet non-safety terminal assembly test fixture provided in embodiment 5, and the axis of the spring coincides with the axis of the contact.

[0058] Embodiment 7. This embodiment is a further limitation of a PLC cabinet non-safety terminal combination test tool provided in embodiment 1, and also includes a back clamp 3, which is a rectangular structure and is detachably fixed on a side wall of the terminal bracket 2 away from the non-safety terminal 1. A protrusion is provided at one end of the back clamp 3 close to the non-safety terminal 1, and the protrusion faces the terminal bracket 2.

[0059] Embodiment 8. This embodiment is a further limitation of a PLC cabinet non-safety terminal combination test tool provided in Embodiment 7. The back clamp 3 is connected to the terminal bracket 2 through a cover plate 4. After the cover plate 4 is detachably connected to the back clamp 3, it can be detachably connected to the terminal bracket 2.

[0060] Embodiment 9. This embodiment provides a non-safety test plug, including the test tooling and adapter provided in embodiment 1, wherein the adapter is respectively connected to the at least two non-safety terminals 1 through wires, and the wires penetrate from one end of the through hole away from the contacts and are connected to the contacts.

[0061] Embodiment 10: This embodiment provides a non-fuse type PLC test cabinet, which is connected to the PLC under test through the non-fuse type test plug provided in embodiment 9.

[0062] Implementation Method XI: Combination Figure 1-7 This embodiment is described in detail by using specific examples to further describe the technical solution provided above. Specifically:

[0063] The test fixture is fixed on the terminal to be tested by the reaction force of the spring inserted into the corresponding terminal to be tested and the pulling force between the back clamp 3 and the terminal to be tested. The contact between the contact and the terminal to be tested (spring compression) realizes the conduction between the terminal to be tested and the test fixture.

[0064] 1. A method for implementing a non-insurance terminal combination test fixture for a PLC cabinet

[0065] 1.1 Material selection

[0066] The base and the terminal support 2 can be made of materials with excellent insulation properties, such as polyimide, polyethylene terephthalate (PET) or epoxy resin composite materials, to ensure electrical isolation and avoid short circuits. The contacts should be made of metal materials with high conductivity and corrosion resistance, such as copper alloy or silver-plated copper, to ensure the stability and oxidation resistance of electrical contact. The spring can be made of materials with good elasticity and fatigue resistance, such as stainless steel or nickel alloy.

[0067] 1.2 Structural design of non-insurance terminal 1

[0068] The base of each non-insurance terminal 1 is designed as a rectangular parallelepiped structure, and a through hole is provided on the side with the smallest surface area of ​​the base to accommodate the telescopic movement of the contact. The contact is designed as a cylindrical structure, and its axial direction is parallel to the through hole, and it can telescope and move in the through hole. The contact is provided with a reset force by the spring inside the base, so that it can return to its original position after being pushed in, ensuring contact reliability and convenient plug-in and pull-out operations. In order to ensure the firmness of the connection between the contact and the base, a thread can be designed at the bottom end of the contact and screwed into the corresponding hole of the base, or fixed by a snap-on structure.

[0069] 1.3 Connection between terminal bracket 2 and non-insurance terminal 1

[0070] The terminal support 2 is designed as a rectangular parallelepiped structure, and its side wall is provided with a plurality of holes. The side wall of the non-insurance terminal 1 is provided with a corresponding protrusion, and the connection with the terminal support 2 is achieved through interference fit. This design ensures the stability of the terminal during the test process and avoids loosening or deviation. At the same time, the interference fit also facilitates the removal and replacement of the non-insurance terminal 1, reducing maintenance costs.

[0071] 1.4 Contact reset mechanism

[0072] The contact and the base are connected by a spring, and the axis of the spring coincides with the axis of the contact, ensuring that when the spring is compressed, the contact can expand and contract along the axial direction of the through hole without deflection. The elastic coefficient of the spring needs to be designed according to the contact requirements and test frequency of the contact to avoid spring fatigue or poor contact after long-term use.

[0073] 1.5 chamfer design

[0074] To improve the durability of the structure, the base edge close to the contact and away from the terminal bracket 2 is chamfered. Chamfering can not only reduce wear during long-term use, but also prevent mechanical damage caused by operating errors or mis-plugging, thereby extending the service life of the test fixture.

[0075] 2. Implementation method of back clip 3

[0076] 2.1 Back Clip 3 Structure Design

[0077] The back clip 3 is designed as a rectangular parallelepiped structure and is fixed to the side wall of the terminal bracket 2 away from the non-insurance terminal 1 through a detachable cover plate 4. The material of the back clip 3 should be a light and high-strength material, such as aluminum alloy or high-strength plastic, to ensure sufficient mechanical strength and durability.

[0078] 2.2 Connection between cover plate 4 and back clip 3

[0079] The cover plate 4 and the back clamp 3 are detachably connected by screws or snap-on structures, which is convenient for quick loading and unloading. The loading and unloading design should ensure that it can be operated without special tools, so that maintenance personnel can quickly replace or repair the back clamp 3 components. At the end of the back clamp 3 close to the non-insurance terminal 1, a protrusion facing the terminal bracket 2 is designed. The protrusion is used to provide additional mechanical support during installation to ensure that the back clamp 3 will not loosen when subjected to external force.

[0080] 3. Implementation method of non-insurance test plug

[0081] The design of the test plug is based on the above-mentioned PLC cabinet non-insurance terminal combined test fixture, and the non-insurance terminal 1 is connected to the adapter through a wire. The specific implementation steps are as follows:

[0082] The conductor is made of cable material with good conductivity and heat resistance, such as tinned copper wire, and is covered with an insulating layer. One end of the conductor is inserted through the through hole of the base and connected to the bottom of the contact through welding or crimping to ensure stable conductivity and reliable contact.

[0083] The other end of the wire is connected to the adapter, and the structural design of the adapter should match the interface of the device under test to ensure a fast and stable electrical connection.

[0084] In order to further enhance the tensile strength of the plug, an anti-pull-out design should be provided at the outlet of the through hole for the wire, such as a wire fixing clip or a reinforced sleeve, to prevent the wire from accidentally falling off during use.

[0085] 4. Implementation method of PLC test cabinet

[0086] The PLC test cabinet is connected to the PLC device through the above-mentioned non-insurance test plug. Multiple test sockets can be designed inside the cabinet to accommodate various types of PLC devices. The specific implementation methods of the cabinet include:

[0087] Socket design: The socket is designed to work with the test plug to ensure a stable electrical connection after the plug is inserted. The conductive parts inside the socket can be made of copper alloy or other highly conductive materials, and equipped with a spring structure to ensure reliable contact with the plug contacts.

[0088] Modular design: The cabinet can adopt modular design. The test socket, power supply module, signal acquisition module, etc. are all detachable components, which are easy to maintain and expand. The test socket can be flexibly configured according to needs to adapt to the testing of different types of PLCs.

[0089] Cable management: Reasonable cable management channels are designed inside the cabinet to ensure that the wires are arranged neatly to avoid signal interference and cable wear.

[0090] Ventilation and heat dissipation: An effective ventilation system is designed inside the cabinet to ensure that the electronic equipment maintains a suitable operating temperature during long-term testing and avoid equipment failure due to overheating.

[0091] 5. Safety and reliability design of test system

[0092] Overload protection: A PLC cabinet non-insurance terminal combination test fixture can prevent equipment damage caused by accidental short circuit or overload by designing a current overload protection device. Thermistors or fuses can be used as overload protection devices.

[0093] Anti-misoperation design: To prevent misoperation, clear insertion directions and operation prompts are marked on the cabinet and test plug to ensure that operators use the equipment correctly.

[0094] Anti-interference design: Wires and connecting devices should have good anti-electromagnetic interference capabilities. A shielding layer can be coated on the outside of the wire, or a filtering circuit can be used to avoid inaccurate test results caused by external interference during the test process.

[0095] The technical solution provided by the present invention is further described in detail above through several specific implementation modes in order to highlight the advantages and benefits of the technical solution provided by the present invention. However, the several specific implementation modes described above are not intended to be used as limitations on the present invention. Any reasonable modification and improvement of the present invention, combination of implementation modes and equivalent substitution within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A PLC cabinet non-insurance terminal combination test tool, characterized in that: The test tooling comprises: Non-fuse terminals, The non-insurance terminal includes a base and a contact, The base is a rectangular parallelepiped structure, and a through hole is provided on a side wall of the rectangular parallelepiped structure with the smallest surface area. The contact is a cylindrical structure and is telescopically arranged in the through hole; There are at least two non-insurance terminals, evenly arranged on the terminal bracket.

2. A PLC cabinet non-insurance terminal combined test fixture according to claim 1, characterized in that: The terminal support is a rectangular parallelepiped structure.

3. A PLC cabinet non-insurance terminal combined test fixture according to claim 1, characterized in that: The side wall of the terminal support is provided with a hole, the side wall of the non-safety terminal is provided with a protrusion, and the non-safety terminal and the terminal support are connected through the interference fit of the hole and the protrusion.

4. A PLC cabinet non-insurance terminal combined test fixture according to claim 1, characterized in that: On the rectangular parallelepiped structure, an edge close to the contact and away from the terminal support is chamfered.

5. A PLC cabinet non-fuse terminal combined test fixture according to claim 1, characterized in that: The contact is connected to the base through a spring.

6. A PLC cabinet non-fuse terminal combined test fixture according to claim 5, characterized in that: The axis of the spring coincides with the axis of the contact.

7. A PLC cabinet non-fuse terminal combined test fixture according to claim 1, characterized in that: It also includes a back clip, which is a rectangular structure and is detachably fixed to a side wall of the terminal bracket away from the non-insurance terminal. A protrusion is provided at one end of the back clip close to the non-insurance terminal, and the protrusion faces the terminal bracket.

8. A PLC cabinet non-insurance terminal combined test fixture according to claim 7, characterized in that: The back clip is connected to the terminal bracket via a cover plate, and after the cover plate is detachably connected to the back clip, it is detachably connected to the terminal bracket.

9. Non-insurance test plug, characterized in that: It comprises the test fixture and adapter as claimed in claim 1, wherein the adapter is respectively connected to the at least two non-safety terminals through wires, and the wires penetrate from one end of the through hole away from the contact and are connected to the contact.

10. Non-insurance PLC test cabinet, characterized in that: The cabinet is connected to the PLC under test via the non-safety test plug described in claim 9.

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