A socket capable of detecting the double-sided performance of a railway signal relay auxiliary plate

Abstract

The utility model relates to a socket capable of detecting double -sided performance of railway signal relay auxiliary sheet belongs to relay detection technical field, including base, be opened spring leaf insertion hole in base still include the upper insertion spring leaf of inserting to spring leaf insertion hole, lower insertion spring leaf, the upper insertion spring leaf, lower insertion spring leaf are separated between the insulating spacer of insulation, the tail piece of upper insertion spring leaf, lower insertion spring leaf is separately arranged, and the tail piece of upper insertion spring leaf, lower insertion spring leaf is respectively connected to test loop when testing. Through setting up two separate upper insertion spring leaf, lower insertion spring leaf, install the insulating spacer in the middle and insulate, make relay after connecting with socket respectively with upper insertion spring leaf and lower insertion spring leaf on the upper and lower surfaces of contact point sheet and form independent branch and mutually insulate alone, realize the detection railway signal relay auxiliary sheet double -sided performance.

Description

Technical Field

[0001] This invention belongs to the field of relay testing technology, and in particular relates to a socket that can test the double-sided performance of the auxiliary sheet of a railway signal relay. Background Technology

[0002] In railway signal relays, the auxiliary piece is an important component connecting the relay and the socket contact spring. The condition of the auxiliary piece directly affects the reliability of the connection between the relay coil and the contact and the control circuit of the signal system, and has a significant impact on the control of the entire signal system.

[0003] Currently, the structure of railway signal relay sockets in my country conforms to the shape and size requirements specified in the national standard GB / T-7417-2010. In this design, the spring contact connecting the socket and the relay auxiliary plate is separate, while the wiring end is integrated into a "V" shape. This structure has been used for many years, and most testing equipment also uses this type of socket. Due to the large number of railway signal relays used, their wide coverage area, and long service life, oxidation and contamination of the relay auxiliary plate are inevitable during long-term use. Normally, relays are inspected and repaired periodically in the maintenance workshop of the electrical section. However, because the auxiliary plate has two sides, if only one side has oxidation and poor contact, the "V" shape of the ordinary socket spring contact cannot detect and identify it. Over time, this reduces the overall reliability of the relay and poses a significant safety hazard. Furthermore, because testing equipment requires frequent insertion and removal of relays, the socket is a consumable part. Ordinary sockets use soldering for wiring, which is inconvenient both in manufacturing and later replacement.

[0004] To address the aforementioned problems, this invention provides a socket structure and method for detecting the double-sided performance of a railway signal relay auxiliary piece. By accurately measuring the double-sided performance of the relay auxiliary piece using this invention, the conductivity of both sides can be determined. Timely maintenance can improve the overall reliability of the relay and the testing accuracy of the relay coil resistance and contact resistance. Furthermore, the socket uses a plug-in wiring method, facilitating subsequent maintenance and replacement. Summary of the Invention

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a socket that can detect the double-sided performance of railway signal relay auxiliary pieces, thereby realizing the function of testing the double-sided performance of relay auxiliary pieces.

[0006] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0007] A socket for testing the double-sided performance of a railway signal relay auxiliary piece includes a base with a spring-loaded socket. The base also includes an upper and a lower spring-loaded piece that are inserted into the socket. The upper and lower spring-loaded pieces are separated by an insulating partition. The tail pieces of the upper and lower spring-loaded pieces are separately positioned. During testing, the tail pieces of the upper and lower spring-loaded pieces are connected to the test circuits respectively. By using two separate upper and lower spring-loaded pieces with an insulating partition in between, the relay, after being connected to the socket, forms independent branches on its upper and lower contact points, respectively, which are insulated from each other. This achieves the testing of the double-sided performance of the railway signal relay auxiliary piece.

[0008] Furthermore, the upper and lower insert spring sheets are provided with spring limiters at the spring insert hole positions to prevent the upper insert spring sheet, lower insert spring sheet, and isolation sheet from loosening within the spring insert hole.

[0009] Furthermore, it also includes a rear cover, which is detachably connected to the base. The rear cover has a tail plate hole, and the tail plates of the upper and lower insert spring plates are respectively placed in separate tail plate holes, so that the tail plates of the upper and lower insert spring plates are placed in an independent area to avoid accidental contact.

[0010] Furthermore, the tail pieces of the upper and lower insert spring sheets are respectively connected to independent spring terminals to avoid accidental contact and wire mixing.

[0011] Furthermore, the tail piece of the upper insert spring piece is located on one side of the tail of the upper insert spring piece, and the tail piece of the lower insert spring piece is located on the opposite side of the tail piece of the upper insert spring piece, and the two are staggered.

[0012] Furthermore, both the upper and lower insert spring plates are provided with locking holes on their tail plates to ensure stable assembly and disassembly of the upper and lower insert spring plates and the insert spring terminals.

[0013] The beneficial effects of this invention are:

[0014] 1. The structure of the socket of the present invention can realize the function of double-sided performance testing of relay auxiliary pieces. Unlike ordinary relay sockets, the socket structure of the present invention disconnects the tail of the "V"-shaped spring of the original plug spring and installs an isolation piece in the middle for insulation. After the relay is connected to the socket, the upper and lower parts of the contact piece are respectively connected to the upper plug spring and the lower plug spring to form independent branches and are mutually insulated. This solves the problem that the upper and lower parts of the original socket contact piece are always in a short-circuited state and cannot be tested separately.

[0015] 2. The structure of the socket of the present invention realizes the connection method of the relay being divided into two parts on the same auxiliary piece, so that the contact resistance of the relay can be truly measured in a four-wire system, which greatly improves the measurement accuracy, reduces the process of compensation value conversion required for testing the contact resistance of ordinary sockets, and solves the problem of low measurement accuracy.

[0016] 3. The wiring method of the socket of the present invention changes the original welding method and replaces it with a plug-in method, which reduces the difficulty of wiring during the installation of the socket and improves the convenience and maintainability of socket replacement;

[0017] 4. In the actual verification process, the present invention successfully detected and identified the oxidation and contamination of the relay auxiliary piece, preventing potential safety hazards and improving the reliability of the relay. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the socket of the present invention;

[0019] Figure 2 This is a schematic diagram of the front structure of the socket of the present invention;

[0020] Figure 3 This is a schematic diagram of the back structure of the socket of the present invention;

[0021] Figure 4 This is a schematic diagram of the overall assembly and connection relationship of the socket of the present invention;

[0022] Figure 5 This is a partial cross-sectional view of the side of the socket of the present invention;

[0023] Figure 6 This is an enlarged schematic diagram of a partial cross-section of the side.

[0024] Figure 7 This is a schematic diagram of the reed assembly and connection relationship.

[0025] In the diagram: 1. Base; 2. Spring insert hole; 3. Threaded hole; 4. Spring assembly; 5. Back cover; 6. Through hole; 7. Tail plate hole; 8. Fixing screw; 9. Upper insert spring plate; 10. Lower insert spring plate; 11. Isolation plate; 12. Spring plate limiter; 13. Spring insert terminal; 14. Locking hole; 15. Tail plate. Detailed Implementation

[0026] To better explain and facilitate understanding of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] like Figures 1-5As shown, the present invention provides a socket for detecting the double-sided performance of a railway signal relay auxiliary plate, including a base 1, on which a plurality of spring-loaded insertion holes 2 are formed, and an upper insertion spring 9 and a lower insertion spring 10 inserted into the spring-loaded insertion holes 2, wherein the upper insertion spring 9 and the lower insertion spring 10 are separated by an insulating insulating sheet 11. Specifically, as shown... Figures 6-7 As shown, spring retaining clips 12 are provided on the upper insert spring plate 9 and the lower insert spring plate 10 at the spring plate insertion hole 2, making it difficult for the upper insert spring plate 9, the lower insert spring plate 10, and the isolation plate 11 to loosen within the spring plate insertion hole 2. The tail pieces 15 of the upper insert spring plate 9 and the lower insert spring plate 10 are set separately. During testing, the tail pieces 15 of the upper insert spring plate 9 and the lower insert spring plate 10 are respectively connected to the test circuit. By setting two separate upper insert spring plates and lower insert spring plates, and installing an isolation plate in between for insulation, after the relay is connected to the socket, the upper and lower sides of the contact piece are respectively connected to the upper insert spring plate and the lower insert spring plate to form independent branches and are mutually insulated, thus realizing the testing of the double-sided performance of the auxiliary piece of the railway signal relay.

[0028] Specifically, it also includes a rear cover 5, which is detachably connected to the base 1. The rear cover 5 has a tail plate hole 7. The tail plates 15 of the upper insert spring plate 9 and the lower insert spring plate 10 are respectively placed in separate tail plate holes 7, so that the upper insert spring plate 9 and the lower insert spring plate 10 are placed in an independent area to avoid accidental contact.

[0029] More specifically, the tail pieces 15 of the upper insert spring sheet 9 and the lower insert spring sheet 10 are respectively connected to independent spring terminals 13 to avoid accidental contact and wire mixing.

[0030] Specifically, the tail piece 15 of the upper insert spring plate 9 is located on one side of the tail of the upper insert spring plate 9, and the tail piece 15 of the lower insert spring plate 10 is located on the opposite side of the tail piece 15 of the upper insert spring plate 9, and the two are staggered. Both the upper insert spring plate 9 and the tail piece 15 of the lower insert spring plate 10 are provided with locking holes to ensure stable assembly and disassembly of the upper insert spring plate 9, the lower insert spring plate 10 and the spring terminal 13.

[0031] This invention provides a socket for detecting the double-sided performance of a railway signal relay auxiliary piece. Accurate measurement of the double-sided performance of the relay auxiliary piece allows for determination of its conductivity on both sides. Timely maintenance improves the overall reliability of the relay and the accuracy of testing the relay coil resistance and contact resistance. Furthermore, the socket uses a plug-in wiring method, facilitating future maintenance and replacement.

[0032] Example 1

[0033] A socket for detecting the double-sided performance of a railway signal relay auxiliary sheet, the socket comprising a base 1, an upper insert spring sheet 9, a lower insert spring sheet 10, an isolation sheet 11, and a rear cover 5, wherein the base 1 includes two rows of spring insert holes 2, each row containing 14 holes, for a total of 28 holes, and 6 threaded holes.

[0034] The upper insert spring 9 and the lower insert spring 10 are made by breaking down the original ordinary socket "V" shaped spring into independent upper and lower insert springs and then processing and improving them, and inserting them into the spring socket 2 of the base.

[0035] The isolation plate 11 is inserted from the rear end of the base 1 into the upper insertion spring plate 9 and the lower insertion spring plate 10 of the spring plate socket. Through the squeezing force and the spring plate limiting card 12, the upper insertion spring plate 9, the lower insertion spring plate 10 and the isolation plate 11 are positioned in the spring plate socket 2.

[0036] The insulating piece 11 is an insulating device that serves to insulate between the upper insert spring piece 9 and the lower insert spring piece 10.

[0037] The upper insert spring sheet 9, the lower insert spring sheet 10, and the isolation sheet 11 form a spring assembly, totaling 28 sets, which need to be inserted into the 28 spring insert holes 2 of the base 1 for positioning.

[0038] The rear cover includes 28 sets of spring plate end holes 7. Each set of end holes 7 is divided into two separate end hole areas, left and right, which correspond to the end plates of the upper spring plate 9 and the lower spring plate 10, respectively.

[0039] The rear cover also includes 6 fixing through holes. After the 28 sets of springs are assembled and the base is positioned, the tail hole of the rear cover is aligned with the spring assembly and snapped onto the base. Fixing screws 8 are inserted through the through hole 6 of the rear cover 5 and connected to the threaded hole 3 of the base 1 to tighten and fix it.

[0040] The upper insert spring plate 9 and the lower insert spring plate 10 are positioned and staggered. Each tail plate includes a locking hole 14. The width and thickness are designed according to the standard spring terminal 13 to facilitate the fixing of the tail plate 15 and the spring terminal 13. The wiring method adopts the plug-in method, which can repeatedly perform wiring operations and solves the inconvenience of the original socket wiring and soldering problem.

[0041] With the socket structure described above, the original "V"-shaped spring has been broken, and an insulating washer has been added in the middle. When the relay is inserted into the socket, the upper and lower surfaces of each auxiliary piece of the relay are individually connected to the upper and lower insert springs, forming separate branches. Each auxiliary piece corresponds to a set of tail pieces, with the right tail piece connected to the upper surface of the auxiliary piece and the left tail piece connected to the lower surface. During testing, the upper and lower surfaces of the auxiliary pieces can be connected individually to form a logic test circuit, allowing for identification of any poor conductivity on one side of any auxiliary piece. The simplest and most practical method is to use the four-wire principle to test the contact resistance and coil resistance. Since the four-wire resistance test requires two test wires to be led out from each end of the resistor under test, it is equivalent to a total of four test wires, which correspond to two separate connection points on the top and bottom sides of each auxiliary piece of the socket. If there is a single-sided defect in any auxiliary piece, a four-wire test circuit cannot be formed, and the test result will be abnormal. In this way, it can be determined that there may be a single-sided conduction failure in the auxiliary piece. Moreover, the contact resistance and coil resistance of the relay should also be tested during the performance test. Using this four-wire measurement method and the test socket of this invention can detect the double-sided conduction performance of the relay auxiliary piece and improve the test accuracy.

[0042] According to another aspect of the present invention, a method for detecting the double-sided performance of a railway signal relay auxiliary piece is provided, the method specifically comprising the following steps:

[0043] Step 1: Install and fix the relay socket of the present invention onto the test fixture panel and keep it perpendicular to the ground;

[0044] Step 2: Connect the relay to be tested to the relay socket;

[0045] Step 3: Select one set of normally closed (closed) contacts of the relay and find the corresponding two sets of tail pieces in the socket;

[0046] Step 3: Connect the two contacts of the first set of tail pieces to each of the two red test wires with spring-loaded terminals, and connect the two contacts of the second set of tail pieces to each of the two black test wires with spring-loaded terminals.

[0047] Step 4: Connect the other end of the four test leads (two red and two black) to the GOM804 micro-ohmmeter. When connecting, follow the colors of the instrument's sockets. Test leads of the same color can be inserted interchangeably without any order.

[0048] Step 5: Turn on the power of the GOM804 micro-ohmmeter and adjust the test setting to display the contact resistance of the normally closed contact of the relay being tested. The contact resistance is displayed as 6.5mΩ, which is within the acceptable range, indicating that the auxiliary plate corresponding to the relay has good conductivity.

[0049] Step Six: Remove the relay. After applying insulating tape to either side of the two auxiliary plates corresponding to the set of contacts, repeat Steps Two through Five. The test result shows infinity. This result usually indicates two issues to check: whether the relay contacts are working properly, and whether the surface of the auxiliary plate is oxidized, contaminated, or otherwise compromised in terms of insulation. Since the relay contacts were just tested and found to be in a qualified state, it means that there is a problem with the continuity of the auxiliary plate. After removing the relay and the insulating tape, the test returns to normal.

[0050] Step 7: Replace the socket of this invention with a regular socket and repeat steps 2 to 5 for testing. Since the regular socket cannot be plugged in, the operation in step 3 needs to be changed to soldering the test wires together. The final test result is 10.6mΩ. Since it is not possible to use a true four-wire system to test to the end of the relay auxiliary piece, the resistance of the relay socket spring is also connected to the test circuit. Later, compensation calculations are needed to subtract this part of the error. This error deviates from the true value by more than 50%.

[0051] The above examples illustrate that the socket of this invention can effectively solve the problem of the inability to measure the continuity of the original socket auxiliary piece and can greatly improve the accuracy of direct measurement of relay contact resistance. In application, it can be used in conjunction with automated testing systems to automate the testing of relay electrical characteristics, meeting the needs of high-quality, high-efficiency production and testing.

[0052] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A socket for detecting the double-sided performance of a railway signal relay auxiliary plate, comprising a base (1), wherein a spring-loaded insertion hole (2) is provided on the base (1), characterized in that: It also includes an upper insert spring plate (9) and a lower insert spring plate (10) inserted into the spring plate socket (2). The upper insert spring plate (9) and the lower insert spring plate (10) are separated by an insulating isolation plate (11). The tail pieces (15) of the upper insert spring plate (9) and the lower insert spring plate (10) are set separately. During testing, the tail pieces (15) of the upper insert spring plate (9) and the lower insert spring plate (10) are respectively connected to the test circuit. A spring plate limiting clip (12) is provided on the upper insert spring plate (9) and the lower insert spring plate (10) at the position of the spring plate socket (2). It also includes a rear cover (5). The rear cover (5) is mounted on the base (1). The rear cover (5) is provided with a tail plate hole (7), which corresponds to the position of the spring plate insertion hole (2). The tail plates (15) of the upper insertion spring plate (9) and the lower insertion spring plate (10) are respectively placed in separate tail plate holes (7). The tail plates (15) of the upper insertion spring plate (9) and the lower insertion spring plate (10) are respectively connected to independent spring plate terminals (13). The tail plate (15) of the upper insertion spring plate (9) is located on one side of the tail of the lower insertion spring plate (10), and the tail plate (15) of the lower insertion spring plate (10) is located on the opposite side of the tail plate (15) of the upper insertion spring plate (9). The two are staggered.

2. A socket for detecting the double-sided performance of a railway signal relay auxiliary sheet according to claim 1, characterized in that: Locking holes are provided on the tail pieces (15) of both the upper insert spring piece (9) and the lower insert spring piece (10).

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