CN114624477B - Flat cable skin breaking device, voltage measurement assembly and measurement method - Google Patents
Flat cable skin breaking device, voltage measurement assembly and measurement method Download PDFInfo
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- CN114624477B CN114624477B CN202210202846.8A CN202210202846A CN114624477B CN 114624477 B CN114624477 B CN 114624477B CN 202210202846 A CN202210202846 A CN 202210202846A CN 114624477 B CN114624477 B CN 114624477B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0425—Test clips, e.g. for IC's
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/06—Measuring leads; Measuring probes
- G01R1/067—Measuring probes
- G01R1/06705—Apparatus for holding or moving single probes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0084—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring voltage only
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
- H01B7/0208—Cables with several layers of insulating material
- H01B7/0225—Three or more layers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/08—Flat or ribbon cables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/82—Recycling of waste of electrical or electronic equipment [WEEE]
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Abstract
The invention discloses a flat cable skin breaking device, a voltage measuring assembly and a measuring method, wherein the skin breaking device comprises two clamping plates which are arranged opposite to each other, and each clamping plate is provided with a conducting assembly; the conduction assembly comprises a mounting seat, a measuring needle and a feeding assembly; each conduction assembly is installed on the clamping plate through the installation seat, and the conduction assemblies on any clamping plate are: the measuring needle can stretch out and retract relative to the clamping plate under the action of the feeding assembly relative to one side of the clamping plate, which is close to the other clamping plate, and the specific stretching displacement is that the measuring needle can pierce through the surface insulation layer of the flat cable, and the specific retracting displacement is that the measuring needle can withdraw from the surface insulation layer of the flat cable; the extension length of the measuring needle is linearly adjustable. The voltage measurement assembly and the voltage measurement method are realized based on the skin breaking device. The technical scheme provided by the scheme can be used for directly measuring the voltage between the copper foil layers on the flat cable, and has the characteristic of protecting the flat cable.
Description
Technical Field
The invention relates to the technical field of cable measurement, in particular to a flat cable skin breaking device, a voltage measurement assembly and a measurement method.
Background
As disclosed in patent application documents of application numbers CN201611131906.2, CN201410014012.X, etc., in the prior art, flat cables are widely used in initiating explosive device tests and detonation systems, specifically, the flat cable is used as a cable for inputting detonation energy, and a detonator is taken as an example, so that the detonator obtains enough energy input through the flat cable, and finally, detonator detonation is realized.
As a common flat cable form, a flat cable has a flat layered structure in cross section, and generally includes, from side to side, on a layer structure formed in a thickness direction of the flat cable: insulating layer, copper foil layer, insulating layer (two-layer copper foil layer and three-layer insulating layer), among the above-mentioned layer structure, copper foil layer is as the conductor part on the flat cable, among the three-layer insulating layer, the two-layer of both sides is as the top layer insulating layer of flat cable, and the insulating isolation layer between the middle insulating layer was as the copper foil layer, and the specific material of insulating layer is polyimide commonly. Meanwhile, flat cables are specifically used as: the two copper foil layers form a current loop on the flat cable.
In the working process of initiating explosive device tests and the initiating explosive device system, the voltage between the copper foil layers is directly related to the initiating voltage, so that a reasonable device and method for measuring the voltage between the copper foil layers are provided, and the device and method have positive significance for development of explosion tests, debugging and monitoring of the initiating explosive device and the like.
Disclosure of Invention
Aiming at the technical problems that the device and the method for reasonably measuring the voltage between copper foil layers on the flat cable have positive significance in development of explosion tests, debugging and monitoring of an initiating system and the like, the invention provides a flat cable skin breaking device, a voltage measuring assembly and a measuring method. The technical scheme provided by the scheme can be used for directly measuring the voltage between the copper foil layers on the flat cable, and has the characteristic of protecting the flat cable.
Aiming at the problems, the flat cable skin breaking device, the voltage measuring assembly and the measuring method provided by the invention solve the problems through the following technical points: the flat cable skin breaking device comprises two clamping plates which are arranged opposite to each other, and each clamping plate is provided with a conducting component;
the conduction assembly comprises a mounting seat, a measuring needle which is arranged on the mounting seat and is a conductor, and a feeding assembly for driving the measuring needle to move along the length direction of the measuring needle;
each conduction assembly is installed on the clamping plate through the installation seat, and the conduction assemblies on any clamping plate are: the measuring needle can stretch out and retract relative to the clamping plate under the action of the feeding assembly relative to one side of the clamping plate, which is close to the other clamping plate, and the specific stretching displacement is that the measuring needle can pierce through the surface insulation layer of the flat cable, and the specific retracting displacement is that the measuring needle can withdraw from the surface insulation layer of the flat cable;
the extension length of the measuring needle is linearly adjustable.
In the prior art, the flat cable is widely applied to the detonation energy transmission of the detonation system to the impact sheet detonator, and is limited by the structural form of the flat cable, and the prior art does not directly measure the voltage on the copper foil layer in a mode that a direct current universal meter for measuring the voltage acts on the copper foil layer. Specific detection means generally have two types: the current value measured by the clamp meter is converted to obtain a required voltage value, and the measuring device at the pulse current generation end is used for measuring the required voltage value, so that the instantaneous voltage value is obtained through measurement and conversion in the first mode, and the conversion result and the actual value have large difference due to the fact that errors are introduced in the conversion process, and meanwhile, the operation is generally carried out in a handheld mode, and only the voltage value at a certain moment can be obtained; in the second mode, because a flat cable exists between the pulse current generating end and the power receiving device (such as a slapper detonator), when the length of the flat cable is longer, and particularly under the condition of an interface, the obtained voltage value has larger deviation from the actual detonation voltage. Therefore, in the prior art, according to the voltage measurement requirement, the voltage measurement is relatively troublesome, the measurement position can not be flexibly selected on the flat cable according to the requirement, and the problem of larger deviation of the measurement result exists.
According to the technical scheme, the flat cable generally comprises two copper foil layers and three insulating layers, the voltage direct measurement can be conveniently realized by selecting voltage measurement points at any position in the length direction of the flat cable, meanwhile, the insulation layers between the copper foil layers in the measurement process can be effectively prevented from being punctured, the flat cable is short-circuited, the copper foil layers are excessively damaged in the measurement process, and meanwhile, the continuous measurement of the voltage at the selected voltage measurement points of the flat cable is conveniently finished, so that the continuous change condition of the voltage is objectively reflected.
Specifically, when the scheme is specifically used, the above two clamping plates can clamp the flat cable at the selected position between the clamping plates under the action of the clamping assembly, then, the feeding assembly drives the measuring needle to extend out relative to the clamping plates, and after the measuring needle punctures the insulating layer on the surface layer of the flat cable, the measuring instrument for measuring voltage can be electrically connected with the copper foil layer through the measuring needle, and the specific method can be adopted:
one of the two wiring terminals of the measuring instrument is connected with the measuring needle of the conduction assembly on one clamping plate, and the other wiring terminal is connected with the measuring needle of the conduction assembly on the other clamping plate;
further and more specific operation steps are:
s1, clamping a flat cable between two clamping plates;
s2, driving a measuring needle on the clamping plate to extend out by utilizing the feeding assembly, so that the measuring needle pierces the surface insulation layer of the flat cable;
wherein, the needle on one clamping plate penetrates into the surface insulation layer from the front side of the flat cable, and the needle on the other clamping plate penetrates into the surface insulation layer from the back side of the flat cable;
and S3, measuring the voltage value between the two copper foil layers on the flat cable by the measuring instrument by utilizing the electrical connection relation between different measuring pins and different copper foil layers and the electrical connection relation between the measuring instrument and the measuring pins.
In this scheme, because the extension length of measuring pin is linear adjustable, so the measuring pin is used as: the surface insulation layer can be pierced, and after the measuring needle is reliably contacted with the copper foil layer, the further driving of the measuring needle is stopped, so that the situation that the copper foil layer is excessively damaged or even the middle insulation layer is pierced to cause the flat cable to be short-circuited or broken down is avoided, at the moment, the measuring instrument is utilized and the measuring needle is transited, the voltage measurement between the copper foil layers can be directly completed at the measuring point selected on the flat cable, the voltage change condition on the flat cable in a period of time can not be continuously measured, and the situation that the voltage continuously changes on the flat cable only is facilitated in the working process of the flat cable is prevented.
When the scheme is specifically implemented, the clamp and the assembly are common components with clamping and restraining functions, and can be clamp bodies, hoop bodies and the like.
Meanwhile, as a person skilled in the art, the linear adjustable extension length of the probe is actually a further limitation of the feeding assembly, and in the prior art, the purposes of driving the probe and meeting the linear adjustable extension length can be achieved by the feeding assembly driven by electric power, the feeding assembly driven by hydraulic power or pneumatic power, and the feeding assembly driven by manual power.
In the concrete implementation, because the common insulating layer material of flat cable and thickness, the measuring needle pierces the insulating layer in top layer relatively easily, for simplifying broken skin device's overall design and realizing miniaturized design, the feeding subassembly adopts manual drive's form can.
The linear adjustable length of stretching out of above measuring pin is the structural basis that the guarantee flat cable was destroyed, in specific application process, needs to control the displacement of stretching out of measuring pin according to the specific surface insulation layer thickness of flat cable, and surface insulation layer thickness can directly obtain, adopt to directly measure the flat cable of the same type to the specific model parameter of flat cable, and in the concrete implementation, according to the surface insulation layer thickness of obtaining to instruct feeding subassembly work through setting up the sign portion that directly or indirectly embodies the measuring pin stretching out, can reach the purpose that control measuring pin feed volume. More specifically, if the following screw cap is adopted to drive the pressing rod to rotate, in the scheme of realizing the extrusion of the pressing rod feeding pushing measuring needle by utilizing the thread lead, scales can be arranged on the circumferential direction of the screw cap to serve as the identification part, and the extrusion amount of the pressing rod is calibrated by utilizing the rotation angle of the screw cap; the pressure bar is arranged to be protruded outwards relative to the screw cap, and scales are arranged in the length direction of the portion, extending out relative to the screw cap, of the pressure bar to serve as the feeding amount of the marking portion for marking the pressure bar. Since the specific form of the feeding assembly is not limited to the proposal comprising the nut and the pressing rod, when the needle and the pressing rod cannot synchronously advance and retreat, the clearance between the needle and the pressing rod and the initial position of the needle can influence the judgment of the extending length of the needle, and in order to solve the problems, the initial position of the front end of the needle can be measured before the clamping plate clamps the flat cable under the condition of considering the clearance. As an equivalent scheme, a scheme that the number of the conduction assemblies on each clamping plate is more than or equal to 2 can be adopted, a single copper foil layer is used as a component part of a conduction path, and after two pins on any clamping plate are contacted with the copper foil layer, the pins are guided to feed or stretch out according to a point conduction relation established between the two pins.
As the technical scheme of the flat cable skin breaking device, the following steps are provided:
as described above, as an implementation scheme for realizing the contact judgment basis of the probe and the copper foil layer by using the single copper foil layer as the electrical conduction path, the implementation scheme is as follows: the number of the conducting components on each clamping plate is more than or equal to 2. The specific use method of the scheme comprises the following steps: after the clamping plate clamps the flat cable, because the thickness of the surface insulating layer at each position of the flat cable is consistent, the measuring pins on any two conducting assemblies synchronously penetrate into the surface insulating layer under the action of the respective feeding assembly, and the measuring tool is used for triggering the feeding assembly to stop working after the two measuring pins are judged to establish an electric conduction relation through the copper foil layer. In the implementation, the on-clamping-plate conduction assemblies can be arranged to be independent of each other, and the measuring needle adopts a working mode of multi-section feeding, specifically: after the feeding in the setting stage is completed and the projecting amounts of the two measuring pins are consistent, whether the measuring pins are conducted or not is confirmed, if the measuring pins are conducted, the feeding is stopped, if the measuring pins are not conducted, the feeding in the next stage is carried out, and the process is repeated until the measuring pins are contacted with the copper foil layer. The device can also be set to be related to needle feeding on each conduction assembly, wherein the two conduction assemblies comprise shared driving teeth, and a linkage mechanism is arranged between the driving teeth and the needles on each conduction assembly, and is used for converting the rotation motion of the driving teeth into the telescopic motion of the needles, the driving teeth rotate to drive the two needles to synchronously stretch and retract, and simultaneously, the conduction condition of the two needles is measured in real time through a measuring tool, after a conduction detection result appears, the rotation of the driving teeth is stopped immediately, and the needles extend out to be in contact with the copper foil layer and cannot excessively penetrate the copper foil layer.
As described above, considering the thickness and material of the surface insulation layer, it is preferable to use a manually operated feeding assembly as a feedback force based on the contact force of the gauge needle with the surface insulation layer, so as to determine whether the gauge needle penetrates into the surface insulation layer by using the condition of pressing the slope surface with the surface insulation layer as described below, and to set: the front end of the measuring needle is provided with a slope, and a tip is formed at the end part of the front end of the measuring needle through the slope. In this scheme, top convenience measuring pin pierces the top insulating layer, and along with top entering the top insulating layer, the measuring pin resistance that the domatic leads to obviously increases can be used to the condition that the gauge needle measuring pin pierces, and this scheme is particularly useful for the feed subassembly that proposes as follows and includes depression bar, depression bar and the condition that the measuring pin does not have direct connection relation. In the concrete implementation, in order to ensure that the pressure between the slope and the surface insulation layer not only can ensure that the measuring needle is successfully penetrated, the contact force is obvious and the penetration difficulty is not too large, the slope can be set to have an included angle of 20-40 degrees with the telescopic direction of the measuring needle.
As a specific arrangement form of the conduction assembly, it is arranged that: the mounting seat is a columnar structure with one end fixedly connected with the clamping plate and provided with a through hole;
the through hole is internally provided with a guide sleeve, the measuring needle is embedded in the guide sleeve, and the measuring needle is restrained to slide along the length direction of the guide sleeve through the action of the side wall and the central hole of the guide sleeve;
the feeding assembly comprises a pressing rod and a pushing mechanism arranged on the mounting seat, the pushing mechanism is used for driving the pressing rod to reciprocate along the length direction of the pressing rod, and the feeding assembly pushes the measuring needle to extend out through acting force applied to the measuring needle by the pressing rod. In the concrete structural form of this scheme, realize the fixed of measuring pin on the mount pad through the uide bushing and regard as the spacer of measuring pin and mount pad simultaneously, if set up to the uide bushing be wear-resisting metal cylinder, mount pad be insulating material's plastics, not only can promote the safety in utilization of this device, make simultaneously have reliable direction precision to the measuring pin. Meanwhile, the scheme provides a specific implementation form of the feeding assembly, namely: the pushing mechanism drives the pressure rod to move along the length direction of the pressure rod, so that the action force is applied to the measuring needle to push the measuring needle to extend.
More specifically: the pushing mechanism is a nut which is arranged on the mounting seat, the position of the nut is fixed relative to the position of the mounting seat, and the nut can rotate around the axis of the compression bar;
the compression bar is a threaded rod in threaded connection with the nut. The technical scheme that adopts screw pair drive depression bar rectilinear movement is provided to this scheme, and when specifically using, through rotatory nut, can utilize the connecting thread between nut and the depression bar to reach the purpose of drive depression bar motion. The realization mode has the characteristics of simple structure, small size and light weight, and simultaneously has the characteristics of high precision of adjustable extension length of the compression bar and self-locking realized by utilizing threads.
As one kind through setting up transmission part on the conduction subassembly to metal material etc. to promote this device life, can carry out insulating protection to inboard measuring needle simultaneously in order to promote this device safety in utilization, make this device be convenient for accomplish simultaneously with the technical scheme of measuring apparatu electricity connection as follows, set up to: the mounting seat is made of plastic, and the screw cap is mounted on the mounting seat through a rolling bearing;
the screw cap and the compression bar are made of metal, and the guide sleeve is made of conductive material;
the insulation component is arranged between the compression bar and the measuring pin;
the device also comprises a binding post which is arranged on the mounting seat and one end of which is contacted with the guide sleeve. In the scheme, the mounting seat is used as an exposed piece and is made of plastic, so that the mounting seat is an insulator; the rolling bearing, the screw cap and the compression bar are made of materials used for guaranteeing that the screw cap can keep good rotation precision for a long time; the guide sleeve and the binding post are convenient for establishing electric connection between the measuring needle and the measuring instrument, and when the measuring instrument is specifically used, the wiring terminal of the measuring instrument is connected to the binding post; the insulation component is used as an insulation spacer between the measuring needle and the pressing rod in the process of pressing the measuring needle by the pressing rod and a force transmission intermediate piece.
In order to ensure the contact reliability of the measuring needle and the copper foil layer, the method comprises the following steps: the mounting seat is also provided with a locking device for locking the extending state of the measuring needle. For the conduction assembly structural form, the locking device can adopt a compression screw, the compression screw is arranged on the mounting seat, and the purpose of locking in an extending state can be achieved through a direct locking nut and/or a measuring needle.
As a technical scheme that the contact area of the flat cable on the clamping surface of the clamping plate is limited, the clamping plate can reliably clamp the flat cable, and meanwhile, the position of the measuring needle in the width direction of the flat cable is controlled to ensure the effectiveness of the penetration of the measuring needle, the technical scheme is as follows: at least one clamping plate is: a groove is arranged on one side of the clamping plate close to the other clamping plate;
both ends of the groove extend to be connected with the side face of the clamping plate, and the width of the groove is consistent with that of the flat cable. When the scheme is specifically used, the scheme is as follows: the flat cable passes through the clamping space between the clamping plates along the length direction of the groove in a mode of being embedded into the groove, and as the position of the groove on the clamping plate is fixed, the position of the conducting component on the clamping plate is fixed, so that the flat cable can be reliably clamped, and the position of the measuring needle in the width direction of the flat cable can be controlled. Furthermore, the strain gauge is arranged on the clamping plate at the bottom side of the groove or at the opposite side of the groove, and is used for measuring the clamping force of the clamping plate on the flat cable so as to prevent the probe from penetrating into the copper foil layer too deeply after the surface insulation layer becomes thinner due to excessive clamping of the clamping plate on the flat cable.
The scheme also discloses a flat cable voltage measurement assembly, which comprises a measuring instrument for measuring voltage and a skin breaking device as described in any one of the above;
one of the two wiring terminals of the measuring instrument is connected with the measuring needle of the conduction assembly on one clamping plate, and the other wiring terminal is connected with the measuring needle of the conduction assembly on the other clamping plate. The voltage measurement assembly is a specific application of the skin breaking device to voltage measurement between copper foil layers of the flat cable.
The scheme also discloses a flat cable voltage measurement method, which adopts the measurement component to finish the voltage measurement between copper foil layers on the flat cable;
the measuring method comprises the following steps:
s1, clamping a flat cable between two clamping plates;
s2, driving a measuring needle on the clamping plate to extend out by utilizing the feeding assembly, so that the measuring needle pierces the surface insulation layer of the flat cable;
wherein, the needle on one clamping plate penetrates into the surface insulation layer from the front side of the flat cable, and the needle on the other clamping plate penetrates into the surface insulation layer from the back side of the flat cable;
and S3, measuring the voltage value between the two copper foil layers on the flat cable by the measuring instrument by utilizing the electrical connection relation between different measuring pins and different copper foil layers and the electrical connection relation between the measuring instrument and the measuring pins. The scheme is that the voltage measuring device is applied to a specific method for measuring voltage between copper foil layers of the flat cable.
The invention has the following beneficial effects:
according to the technical scheme, the flat cable generally comprises two copper foil layers and three insulating layers, the voltage direct measurement is realized by selecting voltage measurement points at any position in the length direction of the flat cable conveniently, and meanwhile, the insulating layers between the copper foil layers in the measurement process can be effectively prevented from being punctured, so that the flat cable is short-circuited, and the copper foil layers are excessively damaged in the measurement process.
In this scheme, because the extension length of measuring pin is linear adjustable, so the measuring pin is used as: the surface insulation layer can be pierced, and after the measuring needle is reliably contacted with the copper foil layer, the further driving of the measuring needle is stopped, so that the situation that the copper foil layer is excessively damaged or even the middle insulation layer is pierced to cause the flat cable to be short-circuited or the middle insulation layer to be broken down due to the fact that the measuring needle pierces the copper foil layer is avoided, and at the moment, the voltage measurement between the copper foil layers can be directly completed at the selected measuring points on the flat cable by utilizing the measuring instrument and through the transition of the measuring needle.
Drawings
Fig. 1 is a schematic structural view of a flat cable peeling device according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of a conductive assembly in an embodiment of a flat cable peeling apparatus in accordance with the present invention.
The marks in the figure are respectively: 1. flat cable, 2, splint, 3, switch on the subassembly, 4, the sign portion, 5, feed the subassembly, 6, the block subassembly, 7, the measuring pin, 8, the terminal, 9, the depression bar, 10, the nut, 11, the mount pad, 12, compression screw, 13, insulating subassembly, 14, antifriction bearing, 15, uide bushing, 16, domatic.
Detailed Description
The present invention will be described in further detail with reference to the following examples, but the present invention is not limited to the following examples:
example 1:
as shown in fig. 1 and 2, the flat cable peeling device comprises two clamping plates 2 which are opposite to each other, and each clamping plate 2 is provided with a conducting component 3;
the conduction assembly 3 comprises a mounting seat 11, a measuring needle 7 which is arranged on the mounting seat 11 and is a conductor, and a feeding assembly 5 for driving the measuring needle 7 to move along the length direction of the measuring needle 7;
each conduction assembly 3 is installed on the clamping plate 2 through the installation seat 11, and the conduction assemblies 3 on any clamping plate 2 are: the measuring needle can extend and retract relative to the clamping plate 2 under the action of the feeding assembly 5 relative to one side of the clamping plate 2, which is close to the other clamping plate 2, and the specific extending displacement is that the measuring needle 7 can pierce the surface insulation layer of the flat cable 1, and the specific retracting displacement is that the measuring needle 7 can retract from the surface insulation layer of the flat cable 1;
the extension length of the stylus 7 is linearly adjustable.
In the prior art, the flat cable 1 is widely applied to the transmission of detonation energy to the impact sheet detonator, for example, by a detonation system, and is limited by the structural form of the flat cable 1, and the prior art does not directly measure the voltage on the copper foil layer in a manner that a direct current multimeter for measuring the voltage acts on the copper foil layer. According to the voltage measurement requirement, there are problems that the voltage measurement is relatively troublesome, and the measurement position cannot be flexibly selected on the flat cable 1 according to the requirement, so that the measured value result is greatly deviated.
According to the technical scheme, according to the specific structural characteristics that the flat cable 1 generally comprises two copper foil layers and three insulating layers, the voltage direct measurement is realized by conveniently selecting voltage measurement points at any position in the length direction of the flat cable 1, and meanwhile, the insulating layers between the copper foil layers in the measurement process can be effectively prevented from being punctured, so that the flat cable 1 is short-circuited, and the copper foil layers are excessively damaged in the measurement process.
Specifically, when this scheme is specifically used, above two splint 2 can be under the effect of block subassembly 6, will select flat cable 1 centre gripping in the position between splint 2, then, through feeding subassembly 5 drive needle 7 stretches out for place splint 2, and after needle 7 punctures the insulating layer on flat cable 1 top layer, can accomplish the electricity connection of measuring apparatu and copper foil layer that is used for measuring voltage through needle 7, and specific method can adopt:
one of the two wiring terminals of the measuring instrument is connected with the measuring needle 7 of the conduction assembly 3 on one clamping plate 2, and the other wiring terminal is connected with the measuring needle 7 of the conduction assembly 3 on the other clamping plate 2;
further and more specific operation steps are:
s1, clamping a flat cable 1 between two clamping plates 2;
s2, driving the probe 7 on the clamping plate 2 to extend by using the feeding assembly 5, so that the probe 7 pierces the surface insulation layer of the flat cable 1;
wherein the needle 7 on one clamping plate 2 penetrates into the surface insulation layer from the front surface of the flat cable 1, and the needle 7 on the other clamping plate 2 penetrates into the surface insulation layer from the back surface of the flat cable 1;
and S3, the measuring instrument measures the voltage value between the two copper foil layers on the flat cable 1 by utilizing the electric connection relation between the different measuring pins 7 and the different copper foil layers and the electric connection relation between the measuring instrument and the measuring pins 7.
In this embodiment, since the extension length of the stylus 7 is linearly adjustable, the stylus 7 is used as: the surface insulation layer can be pierced, and after the measuring needle 7 is reliably contacted with the copper foil layer, the further driving of the measuring needle 7 is stopped, so that the situation that the copper foil layer is excessively damaged due to the fact that the measuring needle 7 pierces the copper foil layer or even the middle insulation layer is pierced to cause the flat cable 1 to be short-circuited or the middle insulation layer to be broken down is avoided, and at the moment, the voltage measurement between the copper foil layers can be directly completed at the selected measuring points on the flat cable 1 by utilizing the measuring instrument and through the transition of the measuring needle 7.
When the scheme is specifically implemented, the clamp and the assembly are common components with clamping and restraining functions, and can be clamp bodies, hoop bodies and the like.
Whilst the above linear adjustment of the extension length of the stylus 7 is actually a further limitation of the feed assembly 5 as a person skilled in the art, in the prior art, the drive function of the stylus 7 and the linear adjustment of the extension length can be achieved by either the manually driven feed assembly 5, the electrically driven feed assembly 5, the hydraulically or pneumatically driven feed assembly 5.
In the specific implementation, due to the common insulating layer material and thickness of the flat cable 1, the needle 7 is relatively easy to pierce the surface insulating layer, and the feeding assembly 5 is in a manual driving mode for simplifying the overall design of the skin breaking device and realizing the miniaturization design.
The linear adjustable length of stretching out of the needle 7 is a structural basis for guaranteeing the flat cable 1 to be damaged, in a specific application process, the stretching out displacement of the needle 7 needs to be controlled according to the specific surface insulation layer thickness of the flat cable 1, the surface insulation layer thickness can be directly obtained through specific model parameters of the flat cable 1 and is obtained by directly measuring the flat cable 1 of the same type, and in a specific implementation process, the purpose of controlling the feeding amount of the needle 7 can be achieved by directly or indirectly showing the stretching out length of the needle 7 through the arrangement of the identification part 4 to guide the feeding assembly 5 to work. More specifically, if the following nut 10 is adopted to drive the pressing rod 9 to rotate, in the scheme of using the thread lead to realize the feeding and pushing of the pressing rod 9 to stretch out of the measuring needle 7, scales can be arranged on the circumference of the nut 10 as the identification part 4, and the extrusion amount of the pressing rod 9 is calibrated by using the rotation angle of the nut 10; the pressing rod 9 is protruded outwards relative to the screw cap 10, and scales are arranged in the length direction of the part of the pressing rod 9 extending relative to the screw cap 10 to serve as the identification part 4 for identifying the feeding amount of the pressing rod 9. Since the specific form of the feeding unit 5 is not limited to the one including the nut 10 and the pressing rod 9 as proposed below, when the needle 7 and the pressing rod 9 cannot advance and retreat simultaneously, the clearance between the needle 7 and the pressing rod 9 and the initial position of the needle 7 may affect the judgment of the protruding length of the needle 7, and in order to solve these problems, the initial position of the front end of the needle 7 may be measured before the clamp plate 2 clamps the flat cable 1 in consideration of the clearance. As an equivalent scheme, a scheme that the number of the conduction assemblies 3 on each clamping plate 2 is larger than or equal to 2 is set as follows, a single copper foil layer is used as a component part of a conduction path, and after two pins 7 on any clamping plate 2 are in contact with the copper foil layer, the pins 7 are guided to feed or stretch out according to a point conduction relation established between the two pins 7.
Example 2:
this example is further refined on the basis of example 1:
as described above, as an implementation scheme for realizing the contact judgment basis of the probe 7 and the copper foil layer by using the single copper foil layer as the electrical conduction path, it is set as follows: the number of the conducting assemblies 3 on each clamping plate 2 is greater than or equal to 2. The specific use method of the scheme comprises the following steps: after the clamping plate 2 clamps the flat cable 1, because the thickness of the surface insulation layers at all positions of the flat cable 1 is consistent, the measuring pins 7 on any two conducting assemblies 3 synchronously penetrate into the surface insulation layers under the action of the respective feeding assemblies 5, and the measuring tool is used as a trigger basis for stopping the feeding assemblies 5 after judging that the two measuring pins 7 establish an electric conduction relationship through the copper foil layer. In the specific implementation, the conducting components 3 on each clamping plate 2 can be set to be independent from each other, and the measuring needle 7 adopts a working mode of multi-section feeding, specifically: after the feeding in the setting stage is completed and the projecting amounts of the two measuring pins 7 are consistent, whether the measuring pins 7 are conducted or not is confirmed, if the two measuring pins 7 are conducted, the feeding is stopped, if the two measuring pins 7 are not conducted, the feeding in the next stage is carried out, and the process is repeated until the two measuring pins 7 are in contact with the copper foil layer. The feeding of the measuring pins 7 on each conducting component 3 can be set to be relevant, if the two selected conducting components 3 comprise shared driving teeth, a linkage mechanism is arranged between the driving teeth and the measuring pins 7 on each conducting component 3, the linkage mechanism is used for converting the rotation motion of the driving teeth into the telescopic motion of the measuring pins 7, the driving teeth rotate to drive the two measuring pins 7 to synchronously stretch, and simultaneously, the conducting condition of the two measuring pins 7 is measured in real time through a measuring tool, after a conducting detection result appears, the rotation of the driving teeth is stopped immediately, and at the moment, the measuring pins 7 extend to be in contact with a copper foil layer and cannot excessively penetrate the copper foil layer.
Example 3:
this example is further refined on the basis of example 1:
as described above, considering the thickness and material of the surface insulation layer, it is preferable to use a manually operated feeding unit 5 as a feedback force according to the contact force of the gauge needle 7 with the surface insulation layer, so as to determine whether the gauge needle 7 penetrates into the surface insulation layer by using the pressing condition of the slope 16 with the surface insulation layer as follows: the front end of the stylus 7 is provided with a slope 16, and a tip is formed at the end of the front end of the stylus 7 through the slope 16. In this scheme, top convenience measuring pin 7 pierces the top layer insulating layer, and along with top entering the top layer insulating layer, the measuring pin 7 resistance that domatic 16 led to obviously increases can be used to the condition that gauge needle measuring pin 7 pierces, and this scheme is particularly useful for the feeding subassembly 5 that puts forward as follows including depression bar 9, depression bar 9 and the condition that measuring pin 7 does not have direct connection relation. In a specific implementation, in order to make the pressure between the slope 16 and the surface insulation layer not only make the needle 7 smoothly penetrate, make the contact force obvious, but also not make the penetration difficult too large, the slope 16 may be set to have an included angle of 20 ° to 40 ° with the telescoping direction of the needle 7.
Example 4:
this example is further refined on the basis of example 1:
as a specific arrangement form of the conduction assembly 3, there is arranged: the mounting seat 11 is a columnar structure with one end fixedly connected with the clamping plate 2 and provided with a through hole;
a guide sleeve 15 is arranged in the through hole, the measuring needle 7 is embedded in the guide sleeve 15, and the measuring needle 7 is restrained to slide along the length direction of the guide sleeve 15 through the action of the side wall and the central hole of the guide sleeve 15;
the feeding component 5 comprises a pressing rod 9 and a pushing mechanism arranged on the mounting seat 11, the pushing mechanism is used for driving the pressing rod 9 to reciprocate along the length direction of the pressing rod 9, and the feeding component 5 pushes the measuring needle 7 to extend through the acting force applied to the measuring needle 7 by the pressing rod 9. In the concrete structural form of this scheme, realize that the measuring needle 7 is fixed on mount pad 11 simultaneously as the spacer of measuring needle 7 and mount pad 11 through uide bushing 15, if set up to uide bushing 15 be wear-resisting metal cylinder, mount pad 11 be insulating material's plastics, not only can promote the safety in utilization of this device, make simultaneously have reliable direction precision to measuring needle 7. At the same time, the scheme provides a specific implementation form of the feeding assembly 5, namely: the pushing mechanism drives the pressing rod 9 to move along the length direction of the pressing rod 9, so that the acting force is applied to the measuring needle 7 to push the measuring needle 7 to extend.
More specifically: the pushing mechanism is a screw cap 10 which is arranged on the mounting seat 11, is fixed in position relative to the mounting seat 11 and can rotate around the axis of the compression bar 9;
the compression bar 9 is a threaded rod in threaded connection with the nut 10. The technical scheme that adopts screw pair drive depression bar 9 rectilinear movement is provided to this scheme, and when specifically using, through rotatory nut 10, can utilize the connecting thread between nut 10 and the depression bar 9 to reach the purpose of drive depression bar 9 motion. The realization mode has the characteristics of simple structure, small size and light weight, and simultaneously has the characteristics of high adjustable precision of the extension length of the compression bar 9 and self-locking realized by utilizing threads.
As one kind through setting up the transmission part on the switch-on subassembly 3 to metal material etc. to promote this device life, can carry out insulating protection in order to promote this device safety in utilization to inboard measuring pin 7 simultaneously, make this device be convenient for accomplish the technical scheme who is connected with the measuring apparatu electricity as follows simultaneously, set up to: the mounting seat 11 is made of plastic, and the nut 10 is mounted on the mounting seat 11 through a rolling bearing 14;
the screw cap 10 and the compression bar 9 are made of metal, and the guide sleeve 15 is made of conductive material;
the device also comprises an insulating component 13 arranged between the compression bar 9 and the measuring needle 7;
the device also comprises a binding post 8 which is arranged on the mounting seat 11 and one end of which is contacted with the guide sleeve 15. In this solution, the mounting seat 11 is made of plastic as an exposed piece, and is intended to be an insulator; the rolling bearing 14, the nut 10 and the compression bar 9 are made of materials used for ensuring that the nut 10 can keep good rotation precision for a long time; the guide sleeve 15 and the binding post 8 are convenient for establishing electrical connection between the measuring needle 7 and the measuring instrument, and when the measuring instrument is particularly used, the binding post 8 is connected with the binding post of the measuring instrument; the insulating component 13 serves as an insulating spacer between the stylus 7 and the plunger 9 and as a force transmission intermediate for the plunger 9 during the compression of the stylus 7.
Example 5:
this example is further refined on the basis of example 1:
to ensure the contact reliability of the probe 7 and the copper foil layer, the method is as follows: the mounting seat 11 is also provided with a locking device for locking the extending state of the measuring needle 7. For the above-mentioned structure of the conducting component 3, the locking device may adopt a compression screw 12, the compression screw 12 is mounted on the mounting seat 11, and the purpose of locking in the extending state can be achieved by directly locking the nut 10 and/or the probe 7.
Example 6:
this example is further refined on the basis of example 1:
as a technical solution for ensuring reliable clamping of the flat cable 1 by the clamping plate 2 by defining the contact area of the flat cable 1 on the clamping surface of the clamping plate 2 and simultaneously controlling the position of the probe 7 in the width direction of the flat cable 1 to ensure the effectiveness of the penetration of the probe 7, the following is set: at least one clamping plate 2 is: a groove is arranged on one side of the clamping plate 2 close to the other clamping plate 2;
both ends of the groove extend to be connected with the side face of the clamping plate 2, and the width of the groove is consistent with that of the flat cable 1. When the scheme is specifically used, the scheme is as follows: the flat cable 1 passes through the clamping space between the clamping plates 2 along the length direction of the groove in a manner of being embedded into the groove, and the position of the conducting component 3 on the clamping plate 2 is fixed due to the fact that the position of the groove on the clamping plate 2 is fixed, so that the flat cable 1 can be reliably clamped, and meanwhile, the position of the measuring needle 7 in the width direction of the flat cable 1 can be controlled. Furthermore, the strain gauge is arranged on the clamping plate 2 at the bottom side of the groove or at the opposite side of the groove, and is used for measuring the clamping force of the clamping plate 2 to the flat cable 1 so as to prevent the needle 7 from penetrating into the copper foil layer too deeply after the surface insulation layer becomes thinner because of excessive clamping of the clamping plate 2 to the flat cable 1, and in specific implementation, the strain gauge is arranged to be flush with the mounting surface, and when the obtained thickness of the surface insulation layer is used as the feeding basis of the needle 7, the reduction of the penetration depth precision of the needle 7 caused by bending of the flat cable 1 due to supporting of the flat cable 1 by the strain gauge can be avoided.
Example 7:
the embodiment provides a flat cable voltage measurement assembly based on embodiment 1, which comprises a measuring instrument for measuring voltage and a skin breaking device described in embodiment 1;
one of the two terminals of the measuring instrument is connected with the measuring needle 7 of the conduction assembly 3 on one clamping plate 2, and the other terminal is connected with the measuring needle 7 of the conduction assembly 3 on the other clamping plate 2. The voltage measurement assembly is a specific application of the skin breaking device to voltage measurement between copper foil layers of the flat cable 1.
Example 8:
the embodiment provides a flat cable voltage measurement method based on embodiment 7, wherein the method adopts the measurement assembly described in embodiment 7 to complete voltage measurement between copper foil layers on a flat cable;
the measuring method comprises the following steps:
s1, clamping a flat cable 1 between two clamping plates 2;
s2, driving the probe 7 on the clamping plate 2 to extend by using the feeding assembly 5, so that the probe 7 pierces the surface insulation layer of the flat cable 1;
wherein the needle 7 on one clamping plate 2 penetrates into the surface insulation layer from the front surface of the flat cable 1, and the needle 7 on the other clamping plate 2 penetrates into the surface insulation layer from the back surface of the flat cable 1;
and S3, the measuring instrument measures the voltage value between the two copper foil layers on the flat cable 1 by utilizing the electric connection relation between the different measuring pins 7 and the different copper foil layers and the electric connection relation between the measuring instrument and the measuring pins 7. The scheme is that the voltage measuring device is applied to a specific method for measuring voltage between copper foil layers of the flat cable 1.
The foregoing is a further detailed description of the invention in connection with specific preferred embodiments, and it is not intended that the invention be limited to these descriptions. Other embodiments of the invention, which are apparent to those skilled in the art to which the invention pertains without departing from its technical scope, shall be covered by the protection scope of the invention.
Claims (9)
1. The flat cable skin breaking device is characterized by comprising two clamping plates (2) which are arranged opposite to each other, wherein each clamping plate (2) is provided with a conducting component (3);
the conduction assembly (3) comprises a mounting seat (11), a measuring needle (7) which is arranged on the mounting seat (11) and is a conductor, and a feeding assembly (5) for driving the measuring needle (7) to move along the length direction of the measuring needle (7);
each conduction assembly (3) is arranged on the clamping plate (2) through the mounting seat (11), and the conduction assemblies (3) on any clamping plate (2) are all: the needle (7) can extend and retract relative to the clamping plate (2) under the action of the feeding assembly (5) relative to one side of the clamping plate (2) close to the other clamping plate (2), and the specific extending displacement is that the needle (7) can puncture the surface insulation layer of the flat cable, and the specific retracting displacement is that the needle (7) can retract from the surface insulation layer of the flat cable;
the extension length of the measuring needle (7) is linearly adjustable;
the mounting seat (11) is a columnar structure with one end fixedly connected with the clamping plate (2) and provided with a through hole;
a guide sleeve (15) is arranged in the through hole, the measuring needle (7) is embedded in the guide sleeve (15), and the measuring needle (7) is restrained to slide along the length direction of the guide sleeve (15) through the action of the side wall and the central hole of the guide sleeve (15);
the feeding assembly (5) comprises a pressing rod (9) and a pushing mechanism arranged on the mounting seat (11), the pushing mechanism is used for driving the pressing rod (9) to reciprocate along the length direction of the pressing rod (9), and the feeding assembly (5) pushes the measuring needle (7) to stretch out through acting force applied to the measuring needle (7) by the pressing rod (9).
2. The flat cable skin breaking device according to claim 1, characterized in that the number of conducting elements (3) on each clamping plate (2) is greater than or equal to 2.
3. The flat cable skin breaking device according to claim 1, characterized in that the front end of the measuring pin (7) has a sloping surface (16), and that a tip is formed at the end of the front end of the measuring pin (7) by means of the sloping surface (16).
4. The flat cable skin breaking device according to claim 1, characterized in that the pushing mechanism is a screw cap (10) which is arranged on the mounting seat (11), fixed in position relative to the mounting seat (11) and rotatable around the axis of the compression bar (9);
the compression bar (9) is a threaded rod in threaded connection with the nut.
5. The flat cable skin breaking device according to claim 4, characterized in that the material of the mounting seat (11) is plastic, and the screw cap (10) is mounted on the mounting seat (11) through a rolling bearing (14);
the screw cap (10) and the compression bar (9) are made of metal, and the guide sleeve (15) is made of conductive material;
the device also comprises an insulation component (13) arranged between the compression bar (9) and the measuring needle (7);
the device also comprises a binding post (8) which is arranged on the mounting seat (11) and one end of which is contacted with the guide sleeve (15).
6. Flat cable skin breaking device according to claim 1, characterized in that the mounting base (11) is further provided with locking means for locking the projecting state of the probe (7).
7. Flat cable skin breaking device according to any one of claims 1 to 6, characterized in that at least one clamping plate (2) is: a groove is arranged on one side of the clamping plate (2) close to the other clamping plate (2);
both ends of the groove extend to be connected with the side face of the clamping plate (2), and the width of the groove is consistent with that of the flat cable.
8. A flat cable voltage measuring assembly comprising a meter for measuring voltage, further comprising a skin breaking device according to any one of claims 1 to 7;
one of the two wiring terminals of the measuring instrument is connected with the measuring needle (7) of the conduction assembly (3) on one clamping plate (2), and the other wiring terminal is connected with the measuring needle (7) of the conduction assembly (3) on the other clamping plate (2).
9. A method for measuring the voltage of a flat cable, which is characterized in that the method adopts the measuring assembly of claim 8 to finish the voltage measurement between copper foil layers on the flat cable;
the measuring method comprises the following steps:
s1, clamping a flat cable between two clamping plates (2);
s2, driving a measuring needle (7) on the clamping plate (2) to extend by utilizing the feeding assembly (5), so that the measuring needle (7) pierces the surface insulation layer of the flat cable;
wherein the measuring needle (7) on one clamping plate (2) penetrates into the surface insulation layer from the front surface of the flat cable, and the measuring needle (7) on the other clamping plate (2) penetrates into the surface insulation layer from the back surface of the flat cable;
and S3, measuring the voltage value between the two copper foil layers on the flat cable by using the electric connection relation between the different pins (7) and the different copper foil layers and the electric connection relation between the measuring instrument and the pins (7).
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| CN214895410U (en) * | 2021-02-07 | 2021-11-26 | 国网江苏省电力有限公司电力科学研究院 | Multi-parameter detection clamp for coiled cable |
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| CN103743299B (en) * | 2014-01-13 | 2015-06-17 | 中国工程物理研究院化工材料研究所 | Low-inductance connector for connecting flat cable of slapper detonator |
| CN106532320B (en) * | 2016-12-09 | 2019-02-12 | 中国工程物理研究院化工材料研究所 | Small-sized low inductive connector for the switching of Slapper detonator flat cable |
| CN109285634B (en) * | 2017-07-21 | 2021-10-22 | 矢崎（中国）投资有限公司 | Method for integrally connecting metal core wires of flat cable and flat cable |
| CN210863934U (en) * | 2019-09-25 | 2020-06-26 | 东莞市凯利仕精密组件有限公司 | Flat cable voltage-withstand test mechanism |
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| CN214895410U (en) * | 2021-02-07 | 2021-11-26 | 国网江苏省电力有限公司电力科学研究院 | Multi-parameter detection clamp for coiled cable |
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