WO2023083375A1

WO2023083375A1 - Multi-station test apparatus for relays

Info

Publication number: WO2023083375A1
Application number: PCT/CN2022/131979
Authority: WO
Inventors: 尚晋
Original assignee: 广东电网有限责任公司东莞供电局
Priority date: 2021-11-15
Filing date: 2022-11-15
Publication date: 2023-05-19
Also published as: CN114236371A; CN114236371B

Abstract

A multi-station test apparatus for relays. The test apparatus comprises a tiered test unit (1) and a portable box body (2), which is used for having the tiered test unit (1) mounted therein and protecting same, wherein the tiered test unit (1) has a plurality of tiers of test modules (101) that can be overlapped and unfolded; the top of the test module (101) on each tier is provided with a plurality of test sockets (102) for relays to be positioned and mounted thereon; the test modules (101) on all the tiers are slidably mounted in the portable box body (2); and the front surface of the portable box body (2) is provided with openings for exposing the test modules (101) on all the tiers. When the plurality of tiers of test modules (101) are accommodated in the portable box body (2), lower-tier test modules (101) and the top box wall of the portable box body (2) perform enclosed protection on a plurality of test sockets (102) on the test modules (101) located below, such that situations such as a short circuit, poor contact and increased resistance that occur in the test sockets (102) during storage and transportation processes due to impurities in the environment invading the test sockets (102) are prevented, thereby preventing the insufficient self-protection performance of the test apparatus from producing an adverse impact on the test progress and precision.

Description

A relay multi-station test device

This application claims priority to a Chinese patent application with application number 202111344552.0 filed with the China Patent Office on November 15, 2021, the entire contents of which are incorporated herein by reference.

technical field

The application relates to the technical field of component testing, in particular to a relay multi-station testing device.

Background technique

There are a large number of various relays in various control cabinets, and regular calibration is required to determine whether the characteristics of the relays meet the requirements. The calibration of this type of relays needs to be tested temporarily. If there are many relays, the relays will be tested one by one. It takes a lot of time and cannot meet the working time requirements, which leads to the fact that such relays cannot be calibrated for a long time due to the complexity of the test, and cannot be found until a fault occurs.

Although the related art discloses a multi-station test device, the test stations on the multi-station test device are usually spread out in a flat manner, so that when there are many test stations, the transportation space occupied by the test device is relatively large, and there is no It is easy to carry out, and the test station on the test device is usually directly exposed. In the process of storage, transportation and outdoor carrying, the test station is easily invaded by impurities such as dew, rain, dust, etc., which may cause damage to the test device. And the hidden danger of damage caused by short circuit of the tested relay, and has a negative impact on the test accuracy and the service life of the test device.

Contents of the invention

The purpose of this application is to provide a relay multi-station testing device to solve the technical problem in the related art that it is difficult to perform normal testing outdoors due to the insufficient self-protection performance of the multi-station testing device.

In order to solve the above technical problems, the application specifically provides the following technical solutions:

A relay multi-station test device, comprising a stacked test unit and a portable box for installing and protecting the stacked test unit, the stacked test unit has multiple layers of test modules that can be overlapped and unfolded, each The top of the test module on each layer has a plurality of test sockets for relay positioning and installation, and the test module on each layer is slidably installed in the portable box, and the front of the portable box has a The exposed opening of the test module, the lower test module received in the portable box passes through the overlapping upper test module to a plurality of the test sockets on the lower test module For closed protection.

As a solution of the present application, the test module includes an insulating base and a plurality of fixed pins, and the top of the insulating base is provided with a plurality of plug-in holes for the plug-in installation of the test socket. The pins are installed in the plug-in holes, and the bottom of the test socket is embedded with a plurality of lower tubular electrodes corresponding to the fixed pins one by one and electrically plugged and matched. The top of the test socket is embedded and installed There is an upper tubular electrode for plugging in the pins of the relay, and the upper tubular electrode is in one-to-one correspondence with the lower tubular electrode and is electrically connected;

The side of the insulating base is embedded with a power supply interface and a data transmission interface electrically connected to the plurality of fixed pins.

As a solution of the present application, the depth of the plug-in hole is not less than the thickness of the test socket, and the length of the fixing pin is not greater than the depth of the hole of the lower tubular electrode, so that the upper insulation base and When the insulating bases of the lower layer are overlapped, they are attached to each other, so that the insulating bases of the upper layer can seal and protect the plurality of test sockets on the insulating bases of the lower layer.

As a solution of the present application, both sides of the top of the insulating base are equipped with side sealing ribs, and both sides of the bottom of the insulating base and both sides of the top inner wall of the portable box are provided with The side sealing ribs on the lower insulating base are slidably matched with the raised bar guide grooves, and the raised bar guide grooves run through the front end of the insulating base located outside the portable box.

As a solution of the present application, the front end of the insulating base is provided with a front end sealing plate extending upwards, and the bottom of the front end of the insulating base and the front end of the portable box are both provided with all the insulating bases below. The front-end seal groove where the above-mentioned front-end seal plate is embedded.

As a solution of the present application, guide grooves are provided on both sides of the insulating base, and a plurality of parallel guide rails corresponding to the insulating base are installed on the inner walls of both sides of the portable box. , the insulating base slides through the guide grooves on both sides and is supported and installed on the guide rails on both sides, and the surface of the guide rail and the groove wall of the guide groove and the side wall of the insulating base and the The inner side walls of the portable box are all slidably and tightly connected;

The inner side of the guide rail facing the insulating base is embedded with a limit driving rod, and the limit driving rod is located at the front end of the guide rail close to the opening. The limit groove matched with the limit lever, the rear end of the limit groove which is always located in the portable box is in a closed state.

As a solution of the present application, the head end of the limit driving rod facing the limit slot is in the shape of a spherical cylinder, and the tail end of the limit driving rod relative to the spherical surface is connected with an elastic driving member. The groove wall at the front end of the guide groove is provided with a positioning hole for the insertion of the limit lever, and the limit lever relatively moves to the Positioning hole, and inserted into the positioning hole under the drive of the elastic driving member, so as to fix the insulating base received in the portable box, and the elastic driving member driven to reset drives the The limit lever is reset to release the fixing of the insulating base.

As a solution of the present application, the elastic driving member includes a spring, a limit shaft and a reset button, and a mounting hole and a side hole connected to one side of the mounting hole are opened in the guide rail, and the mounting hole runs through The front end of the guide rail close to the opening, the reset button is slidably mated with the installation hole, and the front end of the installation hole is installed with the relative position of the reset button and the limit lever. A hinged link that is hinged at the end of the spherical surface;

The side hole is in the shape of a strip extending in the length direction of the guide rail, the hole walls on both sides of the side hole are connected by the limit shaft, and the limit lever has a spherical The front end is provided with strip-shaped holes running through both sides thereof, and the limit shaft slides relative to the limit lever along the strip-shaped hole in the length direction of the limit lever, and the limit axis Rotately cooperate with the limit lever through the strip hole;

The limit driving rod whose tail end is inclined to the spring is driven by the spring to abut against the groove wall of the guide groove through the spherical surface, and the spherical surface of the limiting driving rod relatively moves to the The side hole is driven by the spring to be inserted into the side hole, and the limit lever is disengaged from the side hole by pressing the reset button.

As a solution of the present application, the bottom of the portable box is provided with a T-shaped plate slot, and the T-shaped plate slot runs through the front end of the portable box provided with the opening, and the T-shaped plate slot A support plate is slidably installed inside, and the support plate is connected to the insulating base at the bottom layer through a linkage block.

As a solution of the present application, the bottom of the portable box body is provided with a relief groove communicating with its interior and the opening, and the relief groove is directly opposite to the linkage block. In the sliding direction, the length of the relief slot is not less than the length of the linkage block.

Compared with related technologies, the present application has the following beneficial effects:

The application sets up a multi-layer test module with a test socket that can be overlapped, and a portable box for storing and protecting the multi-layer test module. When the multi-layer test module is received in the portable box, the lower test module and the The top box wall of the portable box seals and protects the multiple test sockets on the test module below, so as to prevent the test sockets from being damaged due to dust, dew, rain, etc. intruding into the test sockets during storage and carrying to the outdoors. Short circuit, poor contact, increased resistance, etc., thereby avoiding the failure of the test device during use due to insufficient self-protection performance and the occurrence of large errors in test results.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the embodiment of the present application;

Fig. 2 is the schematic structural diagram of the test module of the embodiment of the present application;

Fig. 3 is the schematic structural diagram of the test socket of the embodiment of the present application;

Fig. 4 is a schematic structural diagram of a portable box according to an embodiment of the present application;

Fig. 5 is a schematic structural diagram of an insulating base according to an embodiment of the present application;

Fig. 6 is a schematic diagram of the guide rail structure of the embodiment of the present application.

The labels in the figure are respectively indicated as follows:

1-stacked test unit; 2-portable box; 3-plug hole; 4-lower tubular electrode; 5-upper tubular electrode; 6-power supply interface; 7-data transmission interface; 8-side sealing rib; 9 - convex guide groove; 10- front sealing plate; 11- front sealing groove; 12- guide groove; 13- guide rail; 14- limit lever; 15- limit groove; ;18-mounting hole; 19-hinge connecting rod; 20-strip hole; 21-T-shaped plate groove; 22-support plate; 23-linkage block;

101-test module; 102-test socket;

1011-insulation base; 1012-fixed pins;

1601-spring; 1602-limit shaft; 1603-reset button.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

As shown in Figures 1 to 6, the present application provides a relay multi-station test device, including a stacked test unit 1 and a portable case 2 for installing and protecting the stacked test unit 1, the stacked test unit 1 There are multiple layers of test modules 101 that can be overlapped and expanded, and the top of each layer of test modules 101 has a plurality of test sockets 102 for positioning and installation of relays. Each layer of test modules 101 is slidably installed in the portable box 2, The front of the portable case 2 is provided with an opening for every layer of test modules 101 to expose, and the lower test module 101 in the income portable case 2 passes through the upper test module 101 overlapping with it to the lower test module 101. A plurality of test sockets 102 are enclosed for protection.

On the one hand, when the test modules 101 with test sockets 102 in multiple layers are received in the portable case 2, they pass multiple tests on the lower test modules 101 and the top wall of the portable case 2 on the test modules 101 below. The socket 102 is sealed and protected to avoid or reduce the short circuit of the test socket 102 caused by dust, dew, rain, etc. intruding into the test socket 102 during the storage and carrying of the relay multi-station test device (hereinafter referred to as the test device) , poor contact, increased resistance, etc., thereby avoiding or reducing the failure of the test device during use due to insufficient self-protection performance and the occurrence of large errors in test results, which is conducive to the preservation and stability of the test device. , which helps the test device to adapt to the harsh outdoor environment.

On the other hand, compared with the test device in which the relays can only be tested in a single layer, the embodiments of the present application set up a plurality of test modules 101 with test sockets 102 in a superimposed manner, which is beneficial to improve the relay test capacity of the test device. And compared with the single-layer arrangement test device with the same relay test capacity, the test device provided by the embodiment of the present application has a greatly reduced footprint, which facilitates the transportation and portability of the test device, and is suitable for carrying the test device for outdoor testing. When the portability of the test device and the high relay test capacity are required.

In one embodiment, the test module 101 includes an insulating base 1011 and a plurality of fixed pins 1012, and the top of the insulating base 1011 is provided with a plurality of plug-in holes 3 for the test socket 102 to be plugged and installed, and the plurality of fixed pins 1012 are installed in the socket. In the extraction hole 3, the bottom of the test socket 102 is embedded with a plurality of lower tubular electrodes 4 corresponding to the fixed pins 1012 and electrically plugged in, and the top of the test socket 102 is embedded with pins for the relay. The upper tubular electrode 5, the upper tubular electrode 5 corresponds to the lower tubular electrode 4 and is electrically connected;

The side of the insulating base 1011 is embedded with a power supply interface 6 and a data transmission interface 7 electrically connected to a plurality of fixed pins 1012. The function of the power supply interface 6 is to provide an external power supply to supply the electrical energy required for testing to multiple test sockets 102 on the same floor. , the function of the data transmission interface 7 is to provide an external test instrument to input test parameters to multiple relays on the same layer and receive test data sent back. The external power supply and the external testing instrument can be set independently, or can be integrated in or outside the portable box 2, and the specific design and selection can be made according to actual needs.

The positioning and installation of the test socket 102 is realized by setting a plurality of plug-in holes 3 on the insulating base 1011 made of insulating material, and the plurality of fixed pins 1012 in the plug-in holes 3 are connected with the power supply interface 6 and the data transmission interface 7 accordingly , that is, the function of the fixed pin 1012 is to carry out an energization test to the relay installed on the test socket 102 and carry out two-way transmission of test data. The pluggable design of the test socket 102 is not only beneficial to the assembly of the test device, but also facilitates the replacement of the test socket 102, so as to replace the aging and damaged test socket 102, and the arrangement of multiple pins of the relay according to different sizes and models The test socket 102 is adaptively replaced by a scheme to meet the requirements for testing different relays, that is, the same test device can realize the test of various relays.

Further, the depth of the plug-in hole 3 is not less than the thickness of the test socket 102, and the length of the fixed pin 1012 is not greater than the depth of the hole of the lower tubular electrode 4, so that the upper insulating base 1011 and the lower insulating base 1011 overlap each other, In order to realize that the upper insulating base 1011 seals and protects the plurality of test sockets 102 on the lower insulating base 1011 .

The top and the bottom of the insulating base 1011 are mutually parallel and smooth planes. After the test socket 102 is installed in the plug hole 3, the test socket 102 does not protrude from the top of the insulating base 1011, thereby avoiding overlapping and mutual sliding adjacent two. There is a gap between the insulating bases 1011, so as to prevent impurities such as external dew, rain and dust from invading the upper tubular electrode 5 of the test socket 102 through the gap between adjacent insulating bases 1011, thereby further improving the self-protection of the test device performance.

And, both sides of the top of the insulating base 1011 are equipped with side sealing ribs 8, and both sides of the bottom of the insulating base 1011 and both sides of the top inner wall of the portable box body 2 are all provided with the side sealing protrusions on the insulating base 1011 below. The bar 8 is slidably matched with the protruding guide groove 9 , and the protruding guide groove 9 runs through the front end of the insulating base 1011 outside the portable box body 2 .

Adjacent insulating bases 1011 and the top insulating base 1011 cooperate with the top box wall through the side seal ribs 8 and the rib guide grooves 9, which not only realizes the sliding of the insulating base 1011 in the horizontal direction, but also avoids External impurities intrude into the upper tubular electrode 5 of the test socket 102 from the adjacent insulating base 1011 and the gap between the top insulating base 1011 and the side wall of the portable case 2 .

In addition, the front end of the insulating base 1011 is provided with an upwardly extending front end sealing plate 10, and the bottom of the front end of the insulating base 1011 and the front end of the portable box 2 are all provided with a front end sealing groove 11 for the front end sealing plate 10 of the insulating base 1011 below to embed. .

When a plurality of insulating bases 1011 are all received in the portable box body 2, the upwardly erected front end sealing plate 10 of the lower insulating base 1011 just embeds in the front end sealing groove 11 of the upper insulating base 1011 and the top of the portable box body 2, and is sealed by the front end. plate 10 to avoid direct exposure of gaps between adjacent insulating bases 1011 and before the top insulating base 1011 and the box wall, thereby preventing external impurities from intruding into the test from the gap between adjacent insulating bases 1011 and the front of the top insulating base 1011 and the box wall In the upper tubular electrode 5 of the socket 102, thereby further avoiding and improving the self-protection performance of the testing device. The effect of the front-end sealing groove 11 is to keep the front-end face of the multi-layer insulating base 1011 received in the portable box 2 on the same plane, which is beneficial to the aesthetic appearance of the test device, and on the other hand, improves the front-end sealing plate 10. The degree of fit with the insulating base 1011 and the box wall makes the channel for external impurities to invade from the front change from "L" to "Z", thereby further preventing external impurities from entering from the front.

Both sides of the insulating base 1011 are provided with guide grooves 12, and a plurality of parallel guide rails 13 corresponding to the insulating base 1011 are installed on the inner walls of both sides of the portable box 2, and the insulating base 1011 passes through the guide grooves on both sides. 12 is slid and supported on the guide rails 13 on both sides, and the surface of the guide rail 13 and the groove wall of the guide groove 12, as well as between the side wall of the insulating base 1011 and the inner side wall of the portable box 2, are all sliding and sealed. The connection method adopts a smooth plane fit and slide mode, that is, the surface of the guide rail 13, the groove wall of the guide groove 12, the side wall of the insulating base 1011 and the inner side wall of the portable box body 2 are all smooth planes, and the two are closely attached. Merge slides.

And in order to prevent the insulating base 1011 from breaking away from the guide rail 13 due to the sliding transition when extracting, the inboard of the guide rail 13 toward the insulating base 1011 is embedded with a limit driving lever 14, and the limiting driving lever 14 is positioned at the front end of the guide rail 13 near the opening. The groove wall of groove 12 is provided with the limit groove 15 that cooperates with the limit driving lever 14, and the rear end of the limit groove 15 that is always positioned at the portable casing 2 is a closed state, that is, the limit driving lever 14 is in contact with the limit lever. The groove 15 prevents the tail end of the insulating base 1011 from breaking away from the guide rail 13 through the cooperation of the limit groove 15 with the closed rear end and the limit lever 14 on the guide rail 13 without affecting the sliding fit of the insulating base 1011 and the guide rail 13 .

Further optimization in the above embodiment is that the limit driving rod 14 is in the shape of a spherical cylindrical head end facing the limit groove 15, and the tail end of the limit driving rod 14 is connected with an elastic driving member 16 relative to the spherical surface. The groove wall of the front end of the guide groove 12 is provided with a positioning hole 17 for inserting the limit driving rod 14, and the limiting driving rod 14 relatively moves to the positioning hole 17 when the insulating base 1011 is received in the portable box body 2, and Insert the positioning hole 17 under the drive of the elastic driving member 16 to fix the insulating base 1011 received in the portable box body 2, and the elastic driving member 16 driven to reset removes the insulation by driving the limit lever 14 to reset. Fixing of base 1011.

Specifically, when the insulating base 1011 slides outward, the positioning hole 17 in the limit groove 15 on the side of the insulating base 1011 approaches the limit lever 14, and when the positioning hole 17 reaches the limit lever 14, the limit lever The rod 14 is quickly inserted into the positioning hole 17 under the drive of the elastic driving member 16 driven by elastic force, thereby preventing the insulating base 1011 from further sliding outwards and preventing the insulating base 1011 from detaching from the guide rail 13 . And when it is necessary to put the insulating base 1011 into the portable box body 2, the limit lever 14 is separated from the positioning hole 17 by manually operating the elastic driver 16 to reset, so as to release the locking of the insulating base 1011. The insulating base 1011 can be pushed into the portable case 2 .

Wherein, the elastic driving member 16 includes a spring 1601, a limit shaft 1602 and a reset button 1603, and the guide rail 13 is provided with a mounting hole 18 and a side hole 25 connected to one side of the mounting hole 18, and the mounting hole 18 runs through the near opening of the guide rail 13. The front end of the mouth, the reset button 1603 is slidingly inserted into the installation hole 18, and the front end of the installation hole 18 is equipped with a hinge link 19 that hinges the reset button 1603 and the rear end of the limit lever 14 relative to the spherical surface.

The side hole 25 is in the shape of a strip extending in the length direction of the guide rail 13. The walls on both sides of the side hole 25 are connected by a limit shaft 1602. The bar-shaped hole 20, the limit shaft 1602 slides relative to the limit drive rod 14 along the bar-shaped hole 20 in the length direction of the limit drive rod 14, and the limit shaft 1602 passes through the bar-shaped hole 20 and the limit drive rod 14 Turn to fit.

The limit driving rod 14 whose tail end is inclined to the spring 1601 abuts against the groove wall of the guide groove 12 through the spherical surface under the drive of the spring 1601, and the spherical surface of the limiting driving rod 14 is moved to the side hole 25 by the spring when it relatively moves to the side hole 25. 1601 is driven and inserted into the side hole 25 to lock the position of the insulating base 1011 , and by pressing the reset button 1603 the limit lever 14 is disengaged from the side hole 25 to unlock the insulating base 1011 .

What is further optimized in the above embodiment is that the bottom of the portable box body 2 is provided with a T-shaped plate groove 21, and the T-shaped plate groove 21 runs through the front end of the portable box body 2 which is provided with an opening, and the T-shaped plate groove 21 is slidingly installed. There is a support plate 22 , and the support plate 22 is connected to the bottom insulating base 1011 through a linkage block 23 .

When the test device is in use, when the portable case 2 is only supported on the ground with its bottom, the bottom of the support plate 22 and the bottom of the portable case 2 are located in the same plane, or at least the bottom of the support plate 22 and the bottom insulating base 1011 The bottom of the connected front end is located in the same plane as the bottom of the portable case 2. For example, when the portable case 2 is supported by the supporting feet, the front end of the supporting plate 22 has the same supporting feet. When the bottom insulating base 1011 is drawn out, the bottom insulating base 1011 is supported by pulling out the support plate 22 of the T-shaped plate groove 21 thereupon, and the upper layer insulating base 1011 extracted subsequently is supported by the bottom insulating base 1011, thereby avoiding insulation. The load on the base 1011 causes the guide rail 13 to deform or even break.

The bottom of the portable box body 2 is provided with a relief groove 24 that communicates with its interior and opening. The relief groove 24 is directly opposite to the linkage block 23. In the sliding direction of the support plate 22, the length of the relief groove 24 is not less than the linkage block 24. The length of the block 23, that is, the linkage block 23 is installed on the bottom of the bottom insulating base 1011, so as to realize the hiding of the linkage block 23, which is beneficial to the beauty of the test device, and the setting of the relief groove 24 is for the bottom of the bottom insulating base 1011. When it is stored in the portable box 2 , the linkage block 23 makes way for the bottom insulating base 1011 to be smoothly stored in the portable box 2 .

Claims

A relay multi-station test device, comprising a stacked test unit (1) and a portable case (2) for installing and protecting the stacked test unit (1), the stacked test unit (1) has A multi-layer test module (101) that can be overlapped and expanded, the top of each layer of the test module (101) has a plurality of test sockets (102) for relay positioning and installation, and each layer of the test module (101 ) are all slidably installed in the portable box (2), and the front of the portable box (2) is provided with an opening for each layer of the test module (101) to expose, and is received in the portable box ( 2) said test module (101) on the lower floor in the test module (101) on the lower floor is closed by the said test module (101) on the lower floor. Protect.
A relay multi-station test device according to claim 1, wherein the test module (101) comprises an insulating base (1011) and a plurality of fixed pins (1012), and the top of the insulating base (1011) A plurality of plug-in holes (3) for the plug-in installation of the test socket (102) are provided, and a plurality of fixed pins (1012) are installed in the plug-in holes (3), and the test socket (102 ) is embedded with a plurality of lower tubular electrodes (4) corresponding to a plurality of fixed pins (1012) one by one and electrically plugged in, and the top of the test socket (102) is embedded with a relay an upper tubular electrode (5) connected by pins, the upper tubular electrode (5) is in one-to-one correspondence with the lower tubular electrode (4) and is electrically connected;

The side of the insulating base (1011) is embedded with a power supply interface (6) and a data transmission interface (7) electrically connected to the plurality of fixed pins (1012).
A relay multi-station test device according to claim 2, wherein the depth of the insertion hole (3) is not less than the thickness of the test socket (102), and the length of the fixed pin (1012) is not less than Greater than the depth of the hole of the lower tubular electrode (4), so that the insulating base (1011) of the upper layer and the insulating base (1011) of the lower layer are mutually attached when overlapping, so as to realize the pairing of the insulating base (1011) of the upper layer. The plurality of test sockets (102) on the insulating base (1011) on the lower layer are sealed and protected.
The multi-station testing device for relays according to claim 2, wherein side sealing ribs (8) are installed on both sides of the top of the insulating base (1011), and the bottom of the insulating base (1011) Both sides of the two sides and the top inner wall of the portable box (2) are provided with protruding guide grooves (9) slidingly fitted with the side sealing protruding strips (8) on the insulating base (1011) below ), the protruding guide groove (9) runs through the front end of the insulating base (1011) outside the portable box (2).
A relay multi-station testing device according to claim 2, wherein the front end of the insulating base (1011) is provided with an upwardly extending front end sealing plate (10), and the bottom of the front end of the insulating base (1011) And the front end of the portable box (2) is provided with a front end sealing groove (11) for the front end sealing plate (10) of the insulating base (1011) below to be embedded.
A relay multi-station testing device according to claim 2, wherein guide grooves (12) are opened on both sides of the insulating base (1011), and the inner walls of the two sides of the portable box (2) A plurality of parallel guide rails (13) corresponding to the insulating base (1011) are installed on each of them, and the insulating base (1011) is slid and supported on both sides through the guide grooves (12) on both sides. On the guide rail (13), between the surface of the guide rail (13) and the groove wall of the guide groove (12) and between the side wall of the insulating base (1011) and the portable box (2) The inner side walls of both are slide-tightly connected;

The inner side of the guide rail (13) towards the insulating base (1011) is embedded with a limit lever (14), and the limit lever (14) is located near the opening of the guide rail (13). At the front end, the groove wall of the guide groove (12) is provided with a limit groove (15) matched with the limit lever (14), and the limit groove (15) is always located in the portable case. The rear end in the body (2) is in a closed state.
A relay multi-station testing device according to claim 6, wherein the limit lever (14) is in the shape of a spherical cylindrical head end facing the limit groove (15), and the limit The rear end of the driving rod (14) relative to its spherical surface is connected with an elastic driving member (16), and the groove wall of the front end of the guide groove (12) is provided with a positioning hole for the insertion of the limit driving rod (14). hole (17), the limit lever (14) relatively moves to the positioning hole (17) when the insulating base (1011) is received in the portable box (2), and Driven by the elastic driving member (16), it is inserted into the positioning hole (17) to fix the insulating base (1011) received in the portable box (2), and is driven by the elastic drive for reset. The member (16) releases the fixing of the insulating base (1011) by driving the limit lever (14) to reset.
A relay multi-station testing device according to claim 7, wherein the elastic driving member (16) includes a spring (1601), a limit shaft (1602) and a reset button (1603), and the guide rail (13 ) is provided with a mounting hole (18) and a side hole (25) connected to one side of the mounting hole (18), and the mounting hole (18) runs through the opening of the guide rail (13) At the front end, the reset button (1603) is slidably mated with the installation hole (18), and the front end of the installation hole (18) is installed with the reset button (1603) and the limit lever ( 14) the hinged link (19) that is hinged relative to the tail end of the spherical surface;

The side hole (25) is in the shape of a strip extending in the length direction of the guide rail (13), and the limiting shaft (1602) passes between the hole walls on both sides of the side hole (25). connected, the front end of the limit lever (14) has a spherical surface and a bar-shaped hole (20) runs through its two sides, and the limit shaft (1602) runs along the bar-shaped hole (20) in the The limit lever (14) slides relative to the limit lever (14) in the length direction, and the limit shaft (1602) passes through the bar-shaped hole (20) and the limit lever ( 14) Rotation fit;

The limit lever (14), whose tail end is inclined to the spring (1601), abuts against the groove wall of the guide groove (12) through a spherical surface under the drive of the spring (1601), and the limit When the spherical surface of the position shift lever (14) moves to the side hole (25) relatively, it is driven by the spring (1601) and inserted into the side hole (25), and by pressing the reset button (1603 ) to disengage the limit lever (14) from the side hole (25).
A relay multi-station testing device according to claim 2, wherein a T-shaped plate slot (21) is opened at the bottom of the portable box (2), and the T-shaped plate slot (21) runs through the The front end of the portable box (2) is provided with the opening, and a support plate (22) is slidably installed in the T-shaped plate groove (21), and the support plate (22) is connected with the insulating base ( 1011) are connected by linkage block (23).
A relay multi-station testing device according to claim 9, wherein the bottom of the portable box (2) is provided with a relief groove (24) communicating with its interior and the opening, and the relief groove (24) The groove (24) is arranged directly opposite to the linkage block (23), and in the sliding direction of the support plate (22), the length of the relief groove (24) is not less than the length of the linkage block (23) .