An electrical ignition resistance measurement system

By designing an electric ignition resistance measurement system and employing a three-dimensional electrode moving frame and limiting mechanism, the system achieves automation and batch processing of electric ignition resistance measurement, solving the problem that existing technologies cannot achieve automated power-on testing, and improving safety and measurement efficiency.

CN117685838BActive Publication Date: 2026-05-15XIAN MODERN CHEM RES INST
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Patent Information

Application Number
CN202311571542.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-11-23
Publication Date
2026-05-15
Estimated Expiration
2043-11-23

AI Technical Summary

Technical Problem

Existing technologies cannot automate the power-on testing of resistance measurement for electric igniters, posing safety hazards and risks of injury to operators.

Method used

A resistance measurement system for electric igniters was designed, including a support platform, a detachable mounting device for the electric igniter to be tested, and a three-dimensional electrode moving frame. The three-dimensional electrode moving frame drives the electrode device to move in three dimensions. Combined with a limiting mechanism and an electrode adjustment mechanism, the resistance measurement can be automated and batched.

Benefits of technology

It automates resistance measurement, reduces the risk of personal injury, improves measurement efficiency, avoids safety accidents, meets the requirements of automated power-on and measurement, and is suitable for fixing different types of electric ignition appliances and ensuring stable contact of wires, thus ensuring measurement accuracy and equipment durability.

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Abstract

The application provides an electric ignition resistance measurement system, which comprises a support table, a to-be-detected electric ignition mounting device detachably mounted on the support table, an electrode three-dimensional moving frame mounted on the support table, an electrode device mounted on the electrode three-dimensional moving frame, and the electrode three-dimensional moving frame drives the electrode device to move in three-dimensional directions. The to-be-detected electric ignition mounting device comprises a base detachably mounted on the support table, one or more than one mounting box mounted on the base, and a to-be-detected electric ignition mounted in each mounting box. The system can realize automatic operation of to-be-detected electric resistance measurement, reduce the possibility of personal injury of the operator, and improve the efficiency of to-be-detected electric resistance measurement. The system can meet the requirements of automatic power-on and measurement, avoid safety accidents in the manual measurement process, especially the to-be-detected power-on sensitivity, and easily cause explosion, and in serious cases, cause personal injury of the operator.
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Description

Technical Field

[0001] This invention belongs to the field of gunpowder and explosives technology, and relates to electrical testing, specifically to a resistance measurement system for electric ignition devices. Background Technology

[0002] In the production process, the electrical testing of medicated products is a highly dangerous and sensitive procedure. With the advancement of modern industrial technology, technologies such as human-machine isolation, remote control, production process automation, visual control, and remote data acquisition and analysis have become essential, and this is also the future trend of medicated product manufacturing.

[0003] Current electric ignition device measurements cannot yet meet the requirement of automated resistance testing. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide an electric ignition resistance measurement system that solves the technical problem that existing technologies cannot achieve automated power-on resistance testing during the electric ignition resistance measurement process.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] An electric ignition resistance measurement system includes a support platform on which an electric ignition device to be tested is detachably mounted. An electrode three-dimensional moving frame is mounted on the support platform, and an electrode device is mounted on the electrode three-dimensional moving frame. The electrode three-dimensional moving frame drives the electrode device to move in three-dimensional directions.

[0007] The device for installing the electric igniter to be tested includes a detachable base mounted on a support platform, on which one or more mounting boxes are mounted, and in each mounting box the electric igniter to be tested is installed.

[0008] The mounting box includes a box body and a box cover. The electric ignition device to be tested is placed inside the box body. The left and right side walls near the top of the box body are respectively provided with wire protrusion openings. Each wire protrusion opening is provided with a limiting mechanism. The limiting mechanism restricts the wire of the electric ignition device to be tested from extending out of the wire protrusion opening. The end of the wire of the electric ignition device to be tested extending out of the wire protrusion opening is in close contact with a pair of resistance measuring conductive layers arranged on the outside of the box body to achieve electrical conduction.

[0009] The box body is equipped with a padding inside, and a top-open bearing cavity is opened inside the padding. The electric igniter to be tested is placed in the bearing cavity.

[0010] The inner wall of the box cover is provided with a buffer cavity. A buffer clamping member is fixedly connected inside the buffer cavity. The other side of the buffer clamping member near the box body is provided with multiple conical buffer protrusions, and the lower end of the conical buffer protrusions can extend into the box body.

[0011] The electrode device includes an electrode connecting frame, an electrode adjustment mechanism mounted on the electrode connecting frame, and a resistance measuring electrode mounted on the electrode adjustment mechanism.

[0012] The electrode adjustment mechanism includes an upper adjustment unit and a lower adjustment unit; the upper adjustment unit and the lower adjustment unit are connected by a compression buffer spring, the lower end of the lower adjustment unit is connected to a resistance measuring electrode, and the resistance measuring electrode is connected to the adjustment rod of the upper adjustment unit by a flexible electrical conductive component, so that the resistance measuring electrode and the adjustment head of the upper adjustment unit are electrically connected.

[0013] The electrode mounting bracket has a vertically extending countersunk hole for electrode mounting, and an electrode extension hole that extends through the bottom of the support plate is coaxially formed at the bottom of the countersunk hole. The upper adjustment unit, the lower adjustment unit, the clamping buffer spring, and the resistance measuring electrode are installed in the countersunk hole. The top end of the upper adjustment unit extends beyond the top of the countersunk hole, and the bottom end of the resistance measuring electrode extends beyond the bottom of the countersunk hole through the electrode extension hole.

[0014] The present invention also has the following technical features:

[0015] The limiting mechanism includes a pair of spring-loaded cavities, which are symmetrically opened in a box body within a pair of side walls of the wire extension opening. The spring-loaded cavities are connected to the wire extension opening through a connecting rod mounting hole. The inner diameter of the connecting rod mounting hole is smaller than the inner diameter of the spring-loaded cavities, and the central axis of the connecting rod mounting hole is perpendicular to the extension direction of the wire.

[0016] A pair of guide cavities are machined inside the box body below the spring-loaded cavity. The pair of guide cavities are symmetrically opened on a pair of side walls of the wire protrusion opening and are connected to the wire protrusion opening.

[0017] A spring is installed inside the spring-loaded cavity. The outer end of the spring-loaded cavity rests against the outer end of the spring-loaded cavity. The inner end of the spring-loaded cavity is installed on the outer surface of the guide plate located inside the spring-loaded cavity. The outer end of the connecting rod is fixedly installed on the inner surface of the guide plate. The inner end of the connecting rod passes through the connecting rod mounting hole and extends into the wire protrusion. The inner end of the connecting rod is fixedly installed on the limiting head located inside the wire protrusion. The inner end of the guide rod is also fixedly installed on the limiting head. The outer end of the guide rod extends into the guide cavity.

[0018] A pair of limiting heads are arranged in a mirror-symmetrical manner inside the wire protrusion opening; the wire is located between the pair of limiting heads and the bottom surface of the wire protrusion opening.

[0019] The limiting head includes a limiting head body, on which an upper inclined surface, a lower inclined surface, and a connecting side are respectively provided. The upper inclined surface and the lower inclined surface are symmetrically arranged and have a smooth transition. The inner end of the connecting rod and the inner end of the guide rod are fixedly installed on the connecting side.

[0020] Support plates are fixedly connected to the outer walls of the left and right sides of the box body, and an insulating pad is fixedly connected to the top of each support plate. A layer of resistance measurement conductive layer is fixedly installed on the top of each insulating pad. An insulating pressure plate is protruding from the lower edge of the box cover. The insulating pressure plate cooperates with the insulating pad to press and fix the wires extending from the upper surface of the insulating pad.

[0021] The insulating pressure plate has a pressure groove on its lower surface, and a wire is inserted into the pressure groove.

[0022] The pressure groove has a constricted opening structure, and the width of the bottom of the pressure groove away from the box body is smaller than the opening size of the groove near the box body.

[0023] The rear side of the box cover is rotatably mounted on the open top rear side of the box body via a hinge, and the front side of the box cover is detachably fastened to the open top front side of the box body via a snap-fit.

[0024] The snap-fit ​​buckle includes a lower snap plate fixedly installed on the side wall of the box body. The lower snap plate is hinged to the lower end of the connecting buckle, and the upper end of the connecting buckle is snap-fitted to the upper snap plate. The upper snap plate is fixedly installed on the side wall of the box cover.

[0025] The lower buckle plate includes a fixing plate fixedly connected to the side wall of the box body. A U-shaped buckle is snapped on the fixing plate. A pair of connecting plates are vertically arranged on both sides of the lower part inside the U-shaped buckle. A horizontally arranged hinge shaft is installed between the pair of connecting plates. The lower end of the connecting buckle is hinged to the hinge shaft.

[0026] The electrode connection frame includes a horizontally arranged support plate; the support plate is fixed to one side of a vertically arranged fixed plate; multiple horizontally arranged connecting plates are fixedly connected to the other side of the fixed plate, and the connecting plates have vertically opened connecting holes.

[0027] The upper adjustment unit includes a support body vertically installed on the upper part of the electrode mounting countersunk hole. The upper part of the support body extends to the top of the electrode mounting countersunk hole. The top of the support body is coaxially and vertically provided with an upper adjustment thread countersunk hole. The bottom of the upper adjustment thread countersunk hole is coaxially and vertically provided with an adjustment rod cavity that passes through the support body. The inner diameter of the upper adjustment thread countersunk hole is larger than the inner diameter of the adjustment rod cavity.

[0028] An adjusting rod is installed inside the adjusting rod cavity. An upper sliding head is installed on the end of the adjusting rod that extends out of the adjusting rod cavity. The upper sliding head is located inside the electrode mounting countersunk hole. The end of the adjusting rod that extends out of the adjusting rod cavity is fixedly connected to the bottom end of the external thread step. An adjusting head is integrally provided on the top of the external thread step. The external thread step and the upper adjusting thread countersunk hole are installed through threaded engagement. Rotating the adjusting head adjusts the extension amount of the adjusting rod.

[0029] The lower adjustment unit includes a lower sliding head installed in the electrode mounting countersunk hole. The lower sliding head can move up and down in the electrode mounting countersunk hole. A mounting limit square countersunk hole is opened on the top of the lower sliding head. A telescopic square head is embedded in the mounting limit square countersunk hole. The telescopic square head can move vertically and telescopically in the mounting limit square countersunk hole, and the telescopic square head can drive the lower sliding head to rotate.

[0030] The mounting limiting square hole has an electrode telescopic hole coaxially opened at the bottom, through which the sliding head passes. The top end of the resistance measuring electrode is installed at the bottom of the telescopic square head. The bottom end of the resistance measuring electrode passes through the electrode telescopic hole and the electrode extension hole in sequence and extends to the bottom of the support plate.

[0031] The lower sliding head has an adjusting external thread on its outer wall and an adjusting internal thread inside the electrode mounting countersunk hole. The lower sliding head is installed inside the electrode mounting countersunk hole via the thread, and the height of the lower sliding head inside the electrode mounting countersunk hole can be adjusted up and down.

[0032] Compared with the prior art, the present invention has the following technical effects:

[0033] (I) The system of the present invention can realize the automated operation of measuring the resistance to be tested, reduce the possibility of personal injury to the operator, and improve the efficiency of measuring the resistance to be tested.

[0034] (II) The system of the present invention can meet the requirements of automated power-on and measurement, and avoid safety accidents that are easy to occur during manual measurement, especially the sensitive power-on of the object being tested, which is prone to explosion and may cause personal injury to the operator in serious cases.

[0035] (III) The mounting housing of the present invention serves to fix the electric ignition device under test and to fix the wires of the electric ignition device under test. The structure of the mounting housing of the present invention can both support and fix the electric ignition device under test, and can also ensure the fixing strength of the electric ignition device under test according to different models, sizes and structures of different electric ignition devices under test. This avoids the defect that the electric ignition device under test may shake during the movement of the mounting housing, which may easily lead to accidents.

[0036] (IV) The limiting mechanism in the mounting box of the present invention facilitates the measurement of the wire of the electric igniter to be tested, avoids the defect of the wire not being able to be fixed, ensures the fixing effect, and avoids the wire measuring device being unable to achieve rapid contact measurement with the wire.

[0037] (V) The mounting housing of this invention, in conjunction with the electrode device for measuring the resistance of electric ignition appliances, enables batch measurement, reduces the possibility of accidents during manual measurement, and lays the foundation for remote operation and automated measurement.

[0038] (VI) The electrode device of the present invention can meet the requirements of live measurement of the equipment by means of the conductive connection between the adjusting rod and the adjusting head and the resistance measuring electrode, and avoids too many connected parts, which would affect the accuracy of the measurement.

[0039] (VII) The electrode device of the present invention can drive the electrode adjustment mechanism to lift and slide through the electrode connecting frame, so as to realize the automated and batch measurement of the resistance of multiple electric ignition devices to be tested at one time, thereby improving the degree of automation and reducing the dependence on measurement personnel.

[0040] (VIII) The electrode device of the present invention can provide different adjustments to the initial force of the compression buffer spring by adjusting the upper adjustment unit to meet different compression requirements.

[0041] (IX) The electrode device of the present invention can ensure that during the automated measurement process, damage to the resistance measuring electrode is avoided due to installation errors of the electric igniter to be tested, and even defects such as failure to measure due to improper installation are avoided.

[0042] (X) The electrode device of this invention has a reasonable overall structural design, which can ensure the adjustment of the clamping force and meet the adjustment of different extension dimensions. It improves the measurement applicability of the resistance measuring electrode device for electric ignition appliances, and through the buffering effect of the buffer component, avoids damage to the electrode device due to installation errors during the measurement process. It reduces the requirements for installation accuracy, thereby reducing the production cost of the measuring device. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the overall external structure of the mounting box.

[0044] Figure 2 This is a longitudinal section view of the mounting box and a partial section view of the limiting mechanism.

[0045] Figure 3 for Figure 2 An enlarged schematic diagram of the limiting mechanism in the diagram.

[0046] Figure 4This is a cross-sectional structural diagram of the mounting enclosure.

[0047] Figure 5 This is a schematic diagram of the overall external structure of the electrode device.

[0048] Figure 6 This is a schematic diagram of the overall internal structure of the electrode device.

[0049] Figure 7 This is a schematic diagram of the overall structure of an electric ignition resistance measurement system.

[0050] Figure 8 This is a schematic diagram of the structure of the electric ignition device to be tested.

[0051] The meanings of the labels in the diagram are as follows: 1-support platform, 2-installation device for the electric igniter to be tested, 3-three-dimensional moving electrode frame, 4-electrode device, 5-electric igniter to be tested, 6-wire, 7-lamp holder.

[0052] 201-Base, 202-Mounting box, 203-Limit buckle.

[0053] 20201 - Box body, 20202 - Box cover, 20203 - Wire extension opening, 20204 - Limiting mechanism, 20205 - Padding, 20206 - Bearing cavity, 20207 - Support plate, 20208 - Insulating pad, 20209 - Insulating pressure plate, 20210 - Lower pressure groove, 20211 - Hinge, 20212 - Snap-fit ​​buckle, 20213 - Resistance measurement conductive layer.

[0054] 2020201 - Buffer cavity, 2020202 - Buffer clamping component, 2020203 - Conical buffer protrusion.

[0055] 2020401 - Rebound cavity, 2020402 - Connecting rod mounting hole, 2020403 - Guide cavity, 2020404 - Rebound spring, 2020405 - Guide plate, 2020406 - Connecting rod, 2020407 - Limit head, 2020408 - Guide rod, 2020409 - Guide protrusion,

[0056] 202040701 - Limiting head body, 202040702 - Upper inclined surface, 202040703 - Lower inclined surface, 202040704 - Connecting side.

[0057] 2021201 - Lower snap plate, 2021202 - Connecting snap, 2021203 - Upper snap plate.

[0058] 202120101-Fixing plate, 202120102-U-shaped buckle, 202120103-Connecting plate, 202120104-Hinge shaft.

[0059] 301-Longitudinal guide rail, 302-Longitudinal motion driver, 303-Transverse guide rail, 304-Transverse motion driver, 305-Vertical lifting frame, 306-Lifting rod.

[0060] 401-Electrode connector, 402-Electrode adjustment mechanism, 403-Resistance measuring electrode, 404-Flexible electrical conductive component.

[0061] 40101-Support plate, 40102-Fixing plate, 40103-Connecting plate, 40104-Electrode mounting countersunk hole, 40105-Electrode protrusion hole, 40106-Connecting hole.

[0062] 40201 - Upper adjustment unit, 40202 - Lower adjustment unit, 40203 - Compression buffer spring.

[0063] 4020101-Support body, 4020102-Upper adjusting thread countersunk hole, 4020103-Adjusting rod cavity, 4020104-Adjusting rod, 4020105-Upper sliding head, 4020106-External thread step, 4020107-Adjusting head.

[0064] 4020201 - Lower sliding head, 4020202 - Installation limit countersunk hole, 4020203 - Telescopic square head, 4020204 - Electrode telescopic hole.

[0065] The specific content of the present invention will be further explained in detail below with reference to the embodiments. Detailed Implementation

[0066] It should be noted that, unless otherwise specified, all components and equipment in this invention are based on components and equipment known in the prior art. For example, the three-dimensional moving electrode frame, resistance measuring electrode, and resistance tester are all commonly known three-dimensional moving frames, resistance measuring electrodes, and resistance testers.

[0067] Following the above technical solutions, specific embodiments of the present invention are given below. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent modifications made based on the technical solutions of this application fall within the protection scope of the present invention.

[0068] Example 1:

[0069] This embodiment provides a mounting box, such as Figure 1 As shown, the mounting box 202 includes a box body 20201 and a box cover 20202. The box body 20201 contains the electric ignition device 5 to be tested. Figure 2As shown, wire extension openings 20203 are respectively provided on the left and right side walls near the top of the box body 20201; each wire extension opening 20203 is provided with a limiting mechanism 20204; the limiting mechanism 20204 restricts the wire 6 of the electric igniter 5 to be tested from extending out of the wire extension opening 20203; the end of the wire 6 of the electric igniter 5 to be tested extending out of the wire extension opening 20203 is in close contact with a pair of resistance measuring conductive layers 20213 disposed on the outside of the box body 20201 to achieve electrical conduction.

[0070] like Figure 3 As shown, a padding 20205 is provided inside the box body 20201, and a top-open bearing cavity 20206 is opened inside the padding 20205. The electric igniter 5 to be tested is placed in the bearing cavity 20206. This structure can realize the function of bearing and fixing the electric igniter 5 to be tested, and can also ensure the fixing strength of the electric igniter 5 to be tested according to different models, sizes and structures of different electric igniters 5 to be tested.

[0071] like Figure 3 As shown, a buffer cavity 2020201 is provided on the inner wall of the box cover 20202. A buffer clamping member 2020202 is fixedly connected to one side of the buffer cavity 2020201. Multiple conical buffer protrusions 2020203 are provided on the other side of the buffer clamping member 2020202 near the box body 20201, and the lower ends of the conical buffer protrusions 2020203 can extend into the box body 20201. This structural design further enhances the fixing effect of the electric ignition device 5 to be tested, avoiding the defect of the electric ignition device 5 shaking during the movement of the box 202, which could easily lead to an accident.

[0072] As a preferred embodiment of this invention, such as Figure 4 As shown, the limiting mechanism 20204 includes a pair of spring-loaded cavities 2020401. The pair of spring-loaded cavities 2020401 are symmetrically opened in the box body 20201 within a pair of side walls of the wire extension opening 20203. The spring-loaded cavities 2020401 and the wire extension opening 20203 are connected through a connecting rod mounting hole 2020402. The inner diameter of the connecting rod mounting hole 2020402 is smaller than the inner diameter of the spring-loaded cavities 2020401. The central axis of the connecting rod mounting hole 2020402 is perpendicular to the extension direction of the wire 6.

[0073] like Figure 4 As shown, a pair of guide cavities 2020403 are machined inside the box body 20201 below the springback cavity 2020401. The pair of guide cavities 2020403 are symmetrically opened on a pair of side walls of the wire extension port 20203, and the pair of guide cavities 2020403 are connected to the wire extension port 20203.

[0074] like Figure 4 As shown, a spring 2020404 is installed inside the spring return cavity 2020401. The outer end of the spring return spring 2020404 abuts against the outer end of the spring return cavity 2020401. The inner end of the spring return spring 2020404 is installed on the outer surface of the guide plate 2020405 located inside the spring return cavity 2020401. The outer end of the connecting rod 2020406 is fixedly installed on the inner surface of the guide plate 2020405. The inner end of the connecting rod 2020406 passes through the connecting rod mounting hole 2020402 and extends into the wire extension port 20203. The inner end of the connecting rod 2020406 is fixedly installed on the limiting head 2020407 located inside the wire extension port 20203. The inner end of the guide rod 2020408 is also fixedly installed on the limiting head 2020407. The outer end of the guide rod 2020408 extends into the guide cavity 2020403.

[0075] like Figure 4 As shown, a pair of limiting heads 2020407 are arranged in a mirror-symmetrical manner within the wire extension opening 20203; the wire 6 is located between the bottom surfaces of the pair of limiting heads 2020407 and the wire extension opening 20203.

[0076] In this embodiment, the limiting mechanism 20204 facilitates the measurement process of the wire 6 of the electric igniter 5 to be tested, preventing it from shaking and failing to fix the wire 6, thus ensuring the fixing effect and preventing the wire measuring device from failing to achieve rapid contact measurement with the wire.

[0077] Further preferred, such as Figure 4 As shown, a guide protrusion 2020409 is provided on one side of the guide plate 2020405, and the guide protrusion 2020409 is embedded in the guide groove opened on the inner wall of the spring cavity 2020401. This further ensures the stability of the operation of the limiting mechanism 20204.

[0078] Further preferred, such as Figure 4 As shown, the limiting head 2020407 includes a limiting head body 202040701. The limiting head body 202040701 has an upper inclined surface 202040702, a lower inclined surface 202040703, and a connecting side surface 202040704. The upper inclined surface 202040702 and the lower inclined surface 202040703 are symmetrically arranged and smoothly transitioned. The inner end of the connecting rod 2020406 and the inner end of the guide rod 2020408 are fixedly installed on the connecting side surface 202040704. This structural design ensures that the wire 6 can smoothly enter the bottom of the limiting head 2020407, thus fulfilling the function of fixing the wire 6.

[0079] As a preferred embodiment of this invention, such as Figure 2As shown, support plates 20207 are fixedly connected to the outer walls on the left and right sides of the box body 20201, and an insulating pad 20208 is fixedly connected to the top of each support plate 20207. A layer of resistance measurement conductive layer 20213 is fixedly installed on the top of each insulating pad 20208.

[0080] like Figure 2 As shown, an insulating pressure plate 20209 protrudes from the lower edge of the cover 20202. The insulating pressure plate 20209 cooperates with the insulating pad 20208 to press and fix the wire 6 extending from the upper surface of the insulating pad 20208. This structural design further presses and fixes the wire 6 through the insulating pressure plate 20209, ensuring quick and accurate measurement.

[0081] As a preferred embodiment of this invention, such as Figure 2 As shown, a lower pressing groove 20210 is formed on the lower surface of the insulating pressure plate 20209, and a wire 6 is clamped in the lower pressing groove 20210. This structural design in this embodiment improves the limiting and fixing effect on the wire 6, and avoids misalignment of the wire 6 in the pressing and fixing position.

[0082] Furthermore, such as Figure 2 As shown, the pressure groove 20210 has a constricted opening structure, and the width of the bottom of the pressure groove 20210 away from the box body 20201 is smaller than the size of the opening near the box body 20201. This structural design in this embodiment facilitates the entry of the wire 6 into the pressure groove 20210 while also ensuring the fixation strength of the wire 6; the opening of the groove promotes the entry of the wire 6 into the pressure groove 20210, and the bottom of the groove ensures the compression of the wire 6.

[0083] As a preferred embodiment of this invention, such as Figure 3 As shown, the rear side of the lid 20202 is rotatably mounted on the open rear side of the box body 20201 via a hinge 20211, and the front side of the lid 20202 is detachably fastened to the open front side of the box body 20201 via a snap fastener 20212.

[0084] Specifically, such as Figure 3 As shown, the snap-fit ​​buckle 20212 includes a lower snap-fit ​​plate 2021201 fixedly installed on the side wall of the box body 20201. The lower snap-fit ​​plate 2021201 is hinged to the lower end of the connecting buckle 2021202, and the upper end of the connecting buckle 2021202 is snap-fitted to the upper snap-fit ​​plate 2021203. The upper snap-fit ​​plate 2021203 is fixedly installed on the side wall of the box cover 20202. This structural design in this embodiment can improve the fastening and pressing effect between the box cover 20202 and the box body 20201.

[0085] Further preferred, such as Figure 3As shown, the lower buckle plate 2021201 includes a fixing plate 202120101 fixedly connected to the side wall of the box body 20201. A U-shaped buckle 202120102 is snap-fitted onto the fixing plate 202120101. A pair of connecting plates 202120103 are vertically arranged on both sides of the lower part of the U-shaped buckle 202120102. A horizontally arranged hinge shaft 202120104 is installed between the pair of connecting plates. The lower end of the connecting buckle 2021202 is hinged to the hinge shaft 202120104.

[0086] Further preferred, such as Figure 3 As shown, the upper end of the connecting buckle 2021202 has a bent structure, which extends out and snaps into the upper buckle plate 2021203. A locking groove is provided on the upper surface of the upper buckle plate 2021203, allowing the end of the connecting buckle 2021202 to engage with the locking groove. This structural design in this embodiment ensures the connection strength between the connecting buckle 2021202 and the upper buckle plate 2021203, while also ensuring smooth disengagement between them.

[0087] Further preferred, such as Figure 3 As shown, the upper buckle plate 2021203 is a 90° bent plate. One side of the bent plate is fixedly connected to the box cover 20202, and the other side of the bent plate is snapped together with the connecting buckle 2021202 to achieve a detachable connection.

[0088] Example 2:

[0089] This embodiment provides an electrode device, such as... Figure 5 As shown, the electrode device 4 includes an electrode connecting frame 401, an electrode adjustment mechanism 402 is mounted on the electrode connecting frame 401, and a resistance measuring electrode 403 is mounted on the electrode adjustment mechanism 402.

[0090] like Figure 6 As shown, the electrode adjustment mechanism 402 includes an upper adjustment unit 40201 and a lower adjustment unit 40202; the upper adjustment unit 40201 and the lower adjustment unit 40202 are supported and connected by a compression buffer spring 40203. The lower end of the lower adjustment unit 40202 is connected to a resistance measuring electrode 403. The resistance measuring electrode 403 is connected to the adjustment rod 4020104 of the upper adjustment unit 40201 by a flexible electrical conductive component 404, so that the resistance measuring electrode 403 is electrically connected to the adjustment head 4020107 of the upper adjustment unit 40201.

[0091] like Figure 6As shown, the electrode mounting bracket 401 has a through electrode mounting countersunk hole 40104 vertically formed on the support plate 40101. The bottom of the electrode mounting countersunk hole 40104 has an electrode extension hole 40105 that extends through the bottom of the support plate 40101. The upper adjustment unit 40201, the lower adjustment unit 40202, the compression buffer spring 40203, and the resistance measuring electrode 403 are installed in the electrode mounting countersunk hole 40104. The top end of the upper adjustment unit 40201 extends to the top of the electrode mounting countersunk hole 40104, and the bottom end of the resistance measuring electrode 403 extends to the bottom of the electrode mounting countersunk hole 40104 through the electrode extension hole 40105.

[0092] In this embodiment, the design of the conductive connection between the adjusting rod 4020104 and the adjusting head 4020107 and the resistance measuring electrode 403 can meet the requirements of live measurement of the equipment and avoid too many connected parts, which would affect the accuracy of the measurement.

[0093] In this embodiment, the electrode adjustment mechanism 402 is raised and lowered and slid by the electrode connecting frame 401, so as to realize the automated and batch measurement of the resistance of multiple electric ignition devices 5 to be tested at one time, thereby improving the degree of automation and reducing the dependence on measurement personnel.

[0094] In this embodiment, the initial force of the compression buffer spring 40203 can be adjusted differently by adjusting the upper adjustment unit 40201 to meet different compression requirements.

[0095] The above-described structural design in this embodiment ensures that during automated measurement, damage to the resistance measuring electrode 403 is avoided due to installation errors of the electric igniter 5 to be tested, or even defects such as inability to measure due to improper installation.

[0096] As a preferred embodiment of this invention, such as Figure 6 As shown, the electrode connection frame 401 includes a horizontally arranged support plate 40101; the support plate 40101 is fixed to one side of a vertically arranged fixing plate 40102; a plurality of horizontally arranged connecting plates 40103 are fixedly connected to the other side of the fixing plate 40102, and the connecting plates 40103 are vertically provided with connecting holes 40106.

[0097] As a preferred embodiment of this invention, such as Figure 6As shown, the upper adjustment unit 40201 includes a support body 4020101 vertically installed on the upper part of the electrode mounting countersunk hole 40104. The upper part of the support body 4020101 extends to the top of the electrode mounting countersunk hole 40104. The top of the support body 4020101 is coaxially and vertically provided with an upper adjustment thread countersunk hole 4020102. The bottom of the upper adjustment thread countersunk hole 4020102 is coaxially and vertically provided with an adjustment rod cavity 4020103 that passes through the support body 4020101. The inner diameter of the upper adjustment thread countersunk hole 4020102 is larger than the inner diameter of the adjustment rod cavity 4020103.

[0098] like Figure 6 As shown, an adjusting rod 4020104 is installed inside the adjusting rod cavity 4020103. An upper sliding head 4020105 is installed on the end of the adjusting rod 4020104 that extends out of the bottom end of the adjusting rod 4020103. The upper sliding head 4020105 is located inside the electrode mounting countersunk hole 40104. The end of the adjusting rod 4020104 that extends out of the top end of the adjusting rod cavity 4020103 is fixedly connected to the bottom end of the external thread step 4020106. An adjusting head 4020107 is integrally provided on the top of the external thread step 4020106. The external thread step 4020106 and the upper adjusting thread countersunk hole 4020102 are installed through threaded engagement. Rotating the adjusting head 4020107 adjusts the extension amount of the adjusting rod 4020104.

[0099] The upper adjustment unit 40201 in this embodiment is designed to adjust the initial clamping force of the clamping buffer spring 40203, so as to meet the different rebound force requirements of the resistance measuring electrode 403 under different usage requirements.

[0100] In this embodiment, the upper end of the upper adjustment unit 40201 is connected to the port of an external resistance meter for measuring resistance values. Furthermore, the adjustment head 4020107 is also connected to the port of an external resistance meter for measuring resistance values.

[0101] In this embodiment, the upper adjustment unit 40201 is used to adjust the clamping force and to facilitate connection with an external resistance meter.

[0102] In this embodiment, the lower end of the adjusting rod 4020104 is interference-fitted into the fixing hole of the upper sliding head 4020105.

[0103] As a preferred embodiment of this invention, such as Figure 6As shown, the lower adjustment unit 40202 includes a lower sliding head 4020201 installed in the electrode mounting countersunk hole 40104. The lower sliding head 4020201 can move up and down in the electrode mounting countersunk hole 40104. The top of the lower sliding head 4020201 is provided with a mounting limiting square countersunk hole 4020202. A telescopic square head 4020203 is embedded in the mounting limiting square countersunk hole 4020202. The telescopic square head 4020203 can move vertically and telescopically in the mounting limiting square countersunk hole 4020202, and the telescopic square head 4020203 can drive the lower sliding head 4020201 to rotate.

[0104] like Figure 6 As shown, the bottom of the mounting limiting square countersunk hole 4020202 is coaxially provided with an electrode telescopic hole 4020204 that passes through the sliding head 4020201. The bottom of the telescopic square head 4020203 is equipped with the top end of the resistance measuring electrode 403. The bottom end of the resistance measuring electrode 403 extends out through the electrode telescopic hole 4020204 and the electrode extension hole 40105 to the bottom of the support plate 40101.

[0105] In this embodiment, the lower adjustment unit 40202 is used to adjust the extension of the resistance measuring electrode 403, and can also provide sufficient buffer margin for the resistance measuring electrode 403 during the measurement process to avoid damage to the resistance measuring electrode 403.

[0106] As a preferred embodiment of this invention, such as Figure 6 As shown, the telescopic square head 4020203 is a regular hexagonal prism or regular octagonal prism structure. This structural design facilitates the rotation of the sliding head 4020201 driven by the telescopic square head 4020203, allowing adjustment of the position of the sliding head 4020201 within the electrode mounting countersunk hole 40104, thereby adjusting the initial extension distance of the resistance measuring electrode 403. It also ensures that during the buffering telescopic process, the telescopic square head 4020203 smoothly enters the mounting limiting countersunk hole 4020202 of the sliding head 4020201.

[0107] As a preferred embodiment of this invention, such as Figure 6 As shown, the top end of the compression buffer spring 40203 is connected to the bottom end of the upper sliding head 4020105, and the bottom end of the compression buffer spring 40203 is connected to the top end of the telescopic square head 4020203. The compression buffer spring 40203 provides a clamping force to the resistance measuring electrode 403, while also allowing for a certain buffering margin.

[0108] As a preferred embodiment of this invention, such as Figure 6As shown, the outer wall of the sliding head 4020201 has an adjusting external thread, and the inner wall of the electrode mounting countersunk hole 40104 has an adjusting internal thread. The sliding head 4020201 is installed inside the electrode mounting countersunk hole 40104 via the thread, and the height of the sliding head 4020201 inside the electrode mounting countersunk hole 40104 can be adjusted up and down. This structural design in this embodiment ensures that after adjusting the position of the sliding head 4020201, it is in a fixed position, meeting the requirements for use.

[0109] In this embodiment, the resistance measuring electrode 403 drives the telescopic square head 4020203 to move the sliding head 4020201 up and down along the electrode mounting countersunk hole 40104. Because the threaded connection has a self-locking function, after reaching the set position, the sliding head 4020201 is in a relatively fixed position.

[0110] As a preferred embodiment of this invention, such as Figure 6 As shown, multiple sets of electrode adjustment mechanisms 402 are arranged in parallel on the electrode connection frame 401, and each set of electrode adjustment mechanisms 402 includes two electrode adjustment mechanisms 402.

[0111] In this embodiment, since the number of electric igniters that generally need to be measured is not large, and the number of electric igniters 5 to be tested that are fixedly installed at one time is also not large, it is sufficient to use two electrode adjustment mechanisms 402 to measure the resistance of one electric igniter 5 at a time. This reduces the number of electrode adjustment mechanisms 402 and lowers the cost.

[0112] Example 3:

[0113] This embodiment provides a resistance measurement system for electric ignition devices, including a support platform 1, on which a mounting device 2 for the electric ignition device to be tested is detachably mounted, an electrode three-dimensional moving frame 3 is mounted on the support platform 1, and an electrode device 4 is mounted on the electrode three-dimensional moving frame 3. The electrode three-dimensional moving frame 3 drives the electrode device 4 to move in three-dimensional directions.

[0114] The electric ignition device 2 to be tested includes a base 201 that is detachably mounted on a support platform 1. One or more mounting boxes 202 are mounted on the base 201, and each mounting box 202 contains an electric ignition device 5 to be tested.

[0115] The above-described structural design in this embodiment improves work efficiency and meets the requirement of installing and measuring multiple electric ignition devices 5 to be tested at one time.

[0116] As a preferred embodiment, the mounting box 202 adopts the mounting box given in Embodiment 1.

[0117] As a preferred embodiment, the electrode three-dimensional moving frame 3 includes a pair of longitudinal guide rails 301 arranged parallel to each other along the longitudinal direction. A transverse guide rail 303 is mounted on the pair of longitudinal guide rails 301 through a pair of longitudinal motion drivers 302. A vertical lifting frame 305 is mounted on the transverse guide rail 303 through a transverse motion driver 304. An electrode device 4 is mounted on the lifting rod 306 inside the vertical lifting frame 305.

[0118] As a preferred embodiment, the electrode device 4 adopts the electrode device given in Embodiment 2.

[0119] Furthermore, the connecting plate 40103 in the electrode connecting frame 401 of the electrode device 4 is fixedly connected to the lifting rod 306 in the vertical lifting frame 305 of the electrode three-dimensional moving frame 3 through the connecting hole 40106.

[0120] As a preferred embodiment, the base 201 and the support platform 1 are detachably connected by a limiting buckle 203.

[0121] In a preferred embodiment, a lamp holder 7 is mounted on the top of the support platform 1. The lamp holder 7 is a rail-type lamp holder, allowing the lamp to move along the rail on the lamp holder 7. Casters are provided at the bottom of the support platform 1 for easy movement.

[0122] The usage process of the electric ignition resistance measurement system in this embodiment is as follows:

[0123] The base 201 of the electric ignition device 2 to be tested is installed on the top working surface of the support platform 1 via the limiting buckle 203. Figure 8 The electric igniter 5 to be tested is placed in the bearing cavity 20206 of the mounting box 202. Two wires 6 are passed out from the two wire protrusions 20203 respectively. The wires 6 are limited by a pair of limiting heads 2020407 of the limiting mechanism 20204. The part of the wires 6 that extends out of the wire protrusions 20203 is pressed and fixed by the insulating pad 20208 and the insulating pressure plate 20209, so that the two wires 6 respectively come into contact with their corresponding resistance measuring conductive layers 20213 and conduct electricity.

[0124] The box cover 20202 and the box body 20201 are tightly fastened together by the snap fastener 20212. The buffer clamping part 2020202 and the conical buffer protrusion 2020203 provided on the box cover 20202 can further buffer and limit the electric ignition device 5 to be tested.

[0125] The connecting plate 40103 in the electrode connecting frame 401 of the electrode device 4 is fixedly connected to the lifting rod 306 in the vertical lifting frame 305 of the electrode three-dimensional moving frame 3 through the connecting hole 40106, so that the electrode device 4 can move in three-dimensional space under the drive of the electrode three-dimensional moving frame 3.

[0126] During resistance measurement, a pair of adjusting heads 4020107 of electrode device 4 are connected to a pair of terminals of resistance tester, so that electrode device 4 is energized for testing. Electrode device 4 is moved to a position directly above a mounting box 202, so that a pair of resistance measuring electrodes 403 in electrode device 4 are directly above a pair of resistance measuring conductive layers 20213. Electrode device 4 is moved downwards as a whole, so that the bottom ends of a pair of resistance measuring electrodes 403 respectively contact and press against the corresponding pair of resistance measuring conductive layers 20213 to achieve electrical conduction. The resistance measuring conductive layers 20213 are electrically connected to the electric igniter 5 to be tested through wires 6, thereby realizing resistance measurement.

Claims

1. A resistance measurement system for an electric ignition device, comprising a support platform (1), characterized in that, The support platform (1) is detachably equipped with an electric ignition device (2) to be tested. The support platform (1) is equipped with an electrode three-dimensional moving frame (3). The electrode three-dimensional moving frame (3) is equipped with an electrode device (4). The electrode three-dimensional moving frame (3) drives the electrode device (4) to move in three dimensions. The electric ignition device (2) to be tested includes a base (201) that is detachably mounted on a support platform (1). One or more mounting boxes (202) are mounted on the base (201), and each mounting box (202) contains an electric ignition device (5) to be tested. The mounting box (202) includes a box body (20201) and a box cover (20202). The box body (20201) contains an electric ignition device (5) to be tested. The box body (20201) has wire extension openings (20203) on the left and right side walls near the top. Each wire extension opening (20203) has a limiting mechanism (20204) inside. The limiting mechanism (20204) restricts the wire (6) of the electric ignition device (5) to be tested from extending out of the wire extension opening (20203). The ends of the wires (6) of the electric ignition device (5) to be tested extending out of the wire extension opening (20203) are in close contact with a pair of resistance measuring conductive layers (20213) set outside the box body (20201) to achieve electrical conduction. The box body (20201) is provided with a pad (20205) inside, and a top-open bearing cavity (20206) is opened inside the pad (20205). The electric igniter (5) to be tested is placed in the bearing cavity (20206). The inner wall of the box cover (20202) is provided with a buffer cavity (2020201). A buffer clamping member (2020202) is fixedly connected inside the buffer cavity (2020201). On the other side of the buffer clamping member (2020202) near the box body (20201), a plurality of conical buffer protrusions (2020203) are provided, and the lower end of the conical buffer protrusions (2020203) can extend into the box body (20201). The electrode device (4) includes an electrode connecting frame (401), an electrode adjustment mechanism (402) is mounted on the electrode connecting frame (401), and a resistance measuring electrode (403) is mounted on the electrode adjustment mechanism (402). The electrode adjustment mechanism (402) includes an upper adjustment unit (40201) and a lower adjustment unit (40202); the upper adjustment unit (40201) and the lower adjustment unit (40202) are supported and connected by a compression buffer spring (40203), and a resistance measuring electrode (403) is connected to the lower end of the lower adjustment unit (40202). The resistance measuring electrode (403) is connected to the adjustment rod (4020104) of the upper adjustment unit (40201) through a flexible electrical conductive component (404), so that the resistance measuring electrode (403) is electrically connected to the adjustment head (4020107) of the upper adjustment unit (40201). The electrode mounting bracket (40101) has a vertically extending electrode mounting countersunk hole (40104) on its support plate (40101). The bottom of the electrode mounting countersunk hole (40104) has an electrode extension hole (40105) that extends through the bottom of the support plate (40101). The upper adjustment unit (40201), the lower adjustment unit (40202), the compression buffer spring (40203), and the resistance measuring electrode (403) are installed in the electrode mounting countersunk hole (40104). The top end of the upper adjustment unit (40201) extends to the top of the electrode mounting countersunk hole (40104), and the bottom end of the resistance measuring electrode (403) extends to the bottom of the electrode mounting countersunk hole (40104) through the electrode extension hole (40105).

2. The electric ignition resistance measurement system as described in claim 1, characterized in that, The limiting mechanism (20204) includes a pair of spring-loaded cavities (2020401). The pair of spring-loaded cavities (2020401) are symmetrically opened in the box body (20201) inside a pair of side walls of the wire extension opening (20203). The spring-loaded cavities (2020401) and the wire extension opening (20203) are connected by a connecting rod mounting hole (2020402). The inner diameter of the connecting rod mounting hole (2020402) is smaller than the inner diameter of the spring-loaded cavities (2020401). The central axis of the connecting rod mounting hole (2020402) is perpendicular to the extension direction of the wire (6). A pair of guide cavities (2020403) are machined inside the box body (20201) below the springback cavity (2020401). The pair of guide cavities (2020403) are symmetrically opened on a pair of side walls of the wire extension opening (20203), and the pair of guide cavities (2020403) are connected to the wire extension opening (20203). A rebound spring (2020404) is installed inside the rebound cavity (2020401). The outer end of the rebound spring (2020404) abuts against the outer end of the rebound cavity (2020401). The inner end of the rebound spring (2020404) is installed on the outer surface of the guide plate (2020405) located inside the rebound cavity (2020401). The outer end of the connecting rod (2020406) is fixedly installed on the inner surface of the guide plate (2020405). The inner end of the connecting rod (20406) passes through the connecting rod mounting hole (2020402) and extends into the wire outlet (20203). The inner end of the connecting rod (2020406) is fixedly installed on the limiting head (2020407) located in the wire outlet (20203). The inner end of the guide rod (2020408) is also fixedly installed on the limiting head (2020407). The outer end of the guide rod (2020408) extends into the guide cavity (2020403). A pair of limiting heads (2020407) are arranged in a mirror symmetrical manner within the wire extension opening (20203); the wire (6) is located between the bottom surfaces of the pair of limiting heads (2020407) and the wire extension opening (20203).

3. The electric ignition resistance measurement system as described in claim 2, characterized in that, The limiting head (2020407) includes a limiting head body (202040701), on which an upper inclined surface (202040702), a lower inclined surface (202040703), and a connecting side surface (202040704) are respectively provided. The upper inclined surface (202040702) and the lower inclined surface (202040703) are symmetrically arranged and have a smooth transition. The inner end of the connecting rod (2020406) and the inner end of the guide rod (2020408) are fixedly installed on the connecting side surface (202040704).

4. The electric ignition resistance measurement system as described in claim 1, characterized in that, Support plates (20207) are fixedly connected to the outer walls of the left and right sides of the box body (20201). An insulating pad (20208) is fixedly connected to the top of each support plate (20207). A layer of resistance measurement conductive layer (20213) is fixedly provided on the top of each insulating pad (20208). An insulating pressure plate (20209) is protruding from the lower edge of the box cover (20202). The insulating pressure plate (20209) cooperates with the insulating pad (20208) to press and fix the wire (6) extending from the upper surface of the insulating pad (20208).

5. The electric ignition resistance measurement system as described in claim 4, characterized in that, The insulating pressure plate (20209) has a lower pressure groove (20210) on its lower surface, and a wire (6) is installed in the lower pressure groove (20210); The pressure groove (20210) has a constricted opening structure, and the bottom width of the pressure groove (20210) away from the box body (20201) is smaller than the opening size of the groove near the box body (20201).

6. The electric ignition resistance measurement system as described in claim 1, characterized in that, The rear side of the box cover (20202) is rotatably mounted on the open top rear side of the box body (20201) via a hinge (20211), and the front side of the box cover (20202) is detachably fastened to the open top front side of the box body (20201) via a snap fastener (20212). The snap fastener (20212) includes a lower snap plate (2021201) fixedly installed on the side wall of the box body (20201). The lower snap plate (2021201) is hinged to the lower end of the connecting buckle (2021202). The upper end of the connecting buckle (2021202) is snapped onto the upper snap plate (2021203). The upper snap plate (2021203) is fixedly installed on the side wall of the box cover (20202). The lower buckle plate (2021201) includes a fixing plate (202120101) fixedly connected to the side wall of the box body (20201). A U-shaped buckle (202120102) is snapped on the fixing plate (202120101). A pair of connecting plates (202120103) are vertically arranged on both sides of the lower part of the U-shaped buckle (202120102). A horizontally arranged hinge shaft (202120104) is installed between the pair of connecting plates. The lower end of the connecting buckle (2021202) is hinged to the hinge shaft (202120104).

7. The electric ignition resistance measurement system as described in claim 1, characterized in that, The electrode connecting frame (401) includes a horizontally arranged support plate (40101); the support plate (40101) is fixed to one side of a vertically arranged fixing plate (40102); a plurality of horizontally arranged connecting plates (40103) are fixedly connected to the other side of the fixing plate (40102), and the connecting plates (40103) are vertically provided with connecting holes (40106).

8. The electric ignition resistance measurement system as described in claim 1, characterized in that, The upper adjustment unit (40201) includes a support body (4020101) vertically installed on the upper part of the electrode mounting countersunk hole (40104). The upper part of the support body (4020101) extends to the top of the electrode mounting countersunk hole (40104). The top of the support body (4020101) is coaxially and vertically provided with an upper adjustment thread countersunk hole (4020102). The bottom of the upper adjustment thread countersunk hole (4020102) is coaxially and vertically provided with an adjustment rod cavity (4020103) that passes through the support body (4020101). The inner diameter of the upper adjustment thread countersunk hole (4020102) is larger than the inner diameter of the adjustment rod cavity (4020103). An adjusting rod (4020104) is installed inside the adjusting rod cavity (4020103). An upper sliding head (4020105) is installed on the end of the adjusting rod (4020104) that extends out of the bottom end of the adjusting rod (4020103). The upper sliding head (4020105) is located inside the electrode mounting countersunk hole (40104). The end of the adjusting rod (4020104) that extends out of the top end of the adjusting rod cavity (4020103) is fixedly connected to the bottom end of the external thread step (4020106). An adjusting head (4020107) is integrally provided on the top of the external thread step (4020106). The external thread step (4020106) and the upper adjusting thread countersunk hole (4020102) are installed through threaded engagement. Rotating the adjusting head (4020107) adjusts the extension amount of the adjusting rod (4020104).

9. The electric ignition resistance measurement system as described in claim 1, characterized in that, The lower adjustment unit (40202) includes a lower sliding head (4020201) installed in the electrode mounting countersunk hole (40104). The lower sliding head (4020201) can move up and down in the electrode mounting countersunk hole (40104). The top of the lower sliding head (4020201) is provided with a mounting limiting square countersunk hole (4020202). A telescopic square head (4020203) is embedded in the mounting limiting square countersunk hole (4020202). The telescopic square head (4020203) can move vertically and telescopically in the mounting limiting square countersunk hole (4020202), and the telescopic square head (4020203) can drive the lower sliding head (4020201) to rotate. The bottom of the mounting limiting square countersunk hole (4020202) is coaxially provided with an electrode telescopic hole (4020204) that passes through the sliding head (4020201). The top of the resistance measuring electrode (403) is installed at the bottom of the telescopic square head (4020203). The bottom end of the resistance measuring electrode (403) passes through the electrode telescopic hole (4020204) and the electrode extension hole (40105) in sequence and extends to the bottom of the support plate (40101).

10. The electric ignition resistance measurement system as described in claim 9, characterized in that, The lower sliding head (4020201) has an adjusting external thread on its outer wall and an adjusting internal thread inside the electrode mounting countersunk hole (40104). The lower sliding head (4020201) is installed inside the electrode mounting countersunk hole (40104) by the thread, and the height of the lower sliding head (4020201) inside the electrode mounting countersunk hole (40104) can be adjusted up and down.