CN110823434B - Plum blossom contact elastic pressure detection device - Google Patents
Plum blossom contact elastic pressure detection device Download PDFInfo
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- CN110823434B CN110823434B CN201911066836.0A CN201911066836A CN110823434B CN 110823434 B CN110823434 B CN 110823434B CN 201911066836 A CN201911066836 A CN 201911066836A CN 110823434 B CN110823434 B CN 110823434B
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- 238000001514 detection method Methods 0.000 title claims abstract description 31
- 239000000523 sample Substances 0.000 claims abstract description 83
- 238000005259 measurement Methods 0.000 claims abstract description 38
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- 241000722921 Tulipa gesneriana Species 0.000 description 13
- 238000005070 sampling Methods 0.000 description 4
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- 238000012423 maintenance Methods 0.000 description 3
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0057—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes measuring forces due to spring-shaped elements
Abstract
The invention discloses a plum blossom contact elastic pressure detection device which comprises a mounting sleeve, a connecting ring, spacing strips and a measuring probe rod, wherein the connecting ring is mounted at the front end of the mounting sleeve, the inner circumference of the connecting ring is provided with a convex edge, each convex edge is fixedly provided with one spacing strip, the measuring probe rod is hinged between the adjacent spacing strips, the outer side surface of the rear end of each measuring probe rod is provided with an elastic connecting device, each elastic connecting device is correspondingly connected with a miniature force transducer, the miniature force transducers are fixedly arranged on the inner side of the mounting sleeve, the rear end of the mounting sleeve is fixedly provided with a mounting plate and a driving device, the front end of the driving device is provided with a driving conical rod, and when the driving conical rod stretches, the rear end of the measuring probe rod is radially expanded or contracted, so that the front. The invention adopts the mode that the measuring probe rod is elastically stretched and contacts with the contact finger to carry out measurement, utilizes the measuring probe rod and the elastic connecting device to carry out conversion measurement, has no external impact interference in the measuring process, and has high measuring efficiency and accurate and reliable measurement.
Description
Technical Field
The invention relates to the technical field of power equipment detection, in particular to a plum blossom contact elastic pressure detection device.
Background
The plum blossom contact is a high-voltage and high-current sliding power connector adopting a multi-contact-finger parallel structure, is widely applied to equipment such as an isolating switch, a switch cabinet, a transformer substation trolley switch and the like as a main conductive loop connecting piece, and has the characteristics of multiple contact points, good conductivity, small contact resistance and the like.
Contact pressure between each contact finger in the tulip contact and the contact conductor is provided through a plurality of annular springs, and if the pressure of the tulip contact annular spring is insufficient, the tulip contact finger and the annular spring can be heated. Generally, the heating of the contact finger and the annular spring is caused by insufficient pressure of the annular spring, when the pressure of the annular spring is insufficient, uneven distribution of contact pressure on each contact is easily caused, local overheating of the contact finger with poor contact is caused, and the annular spring outside the contact finger is softened due to heating and annealing. The fatigue annular spring enables the contact pressure between the contact finger and the contact to be continuously reduced, the contact state becomes worse, the heating is enabled to be more serious, the annular spring is further annealed, a vicious circle is entered, the annular spring is possibly developed into an overheat state, the insulation damage is caused, the arc discharge is caused to burn the switch cabinet, and therefore the regular detection on the plum blossom contact is needed.
At present, the maintainer often can only detect when overhauing the plum blossom contact and change the obvious inefficacy of range estimation or cracked annular spring, and to those annular springs that elasticity reduces, the maintainer can't effectively detect out, can't in time get rid of hidden danger.
The patent document with the publication number of CN104848979A and the patent name of 'a device for detecting the plug-pull force of a plum blossom contact of a high-voltage switch cabinet and a test method thereof' discloses a bracket provided with a fixed contact, and also comprises a hydraulic mechanism, wherein a tension-compression mechanical sensor is arranged between a piston rod of the hydraulic mechanism and the bracket, the tension-compression mechanical sensor is in communication connection with a controller, and the controller is in communication connection with an output device; the static contact mounted on the support is slowly pushed into the tulip contact by using the hydraulic mechanism, and the pull-press mechanical sensor carries out real-time data acquisition on the insertion and extraction force parameter information of the tulip contact. However, the patent document does not disclose how the tulip contact, the bracket and the tension-compression mechanical sensor are accurately contacted for detection, the structure and the connection relationship are unknown, and how each contact finger in the tulip contact is correspondingly distinguished for detection cannot be known.
The patent document with the publication number of CN106289617A and the patent name of plum blossom contact finger type isolating switch clamping force measuring device discloses a shell comprising an analog contact, wherein a mounting block is arranged in the shell, a pressure sensor mounting hole is arranged on the mounting block, and the pressure sensor mounting hole on the mounting block is opposite to a shaft pin hole on the shell; a guide sleeve is arranged in a shaft pin hole of the shell, the upper end surface of the guide sleeve is flush with the upper end surface of the shaft pin hole, a shaft pin is arranged in the guide sleeve, the upper end surface of the shaft pin is connected with a pressing sheet, the pressing sheet is arranged in a waist-shaped hole in the surface of the shell, and the waist-shaped hole is communicated with the shaft pin hole; the lower end surface of the shaft pin presses a pressure sensor, the pressure sensor is arranged in a pressure sensor mounting hole on the mounting block, when the pressure measuring device is used, the operating rod is pushed to insert the clamping force measuring device into a contact finger of the isolating switch, so that a waist-shaped hole on the surface of the shell is flush with the mounting surface of a conductive tube of the isolating switch, the operating rod is rotated to enable a single contact finger to be pressed into a sheet in a positive pressure mode, a pair of acting forces with the same size and opposite directions are simultaneously generated on the shell and the sheet relative to two contact fingers, and the acting forces are transmitted to the pressure sensor through the shaft pin to;
the patent document with the publication number of CN109341901A and the patent name of "pressure detector" discloses a probe, wherein one end of the probe is connected with the host, the other end of the probe is provided with a pressure sensor, the probe is also provided with a limiting piece near the pressure sensor, when the probe is inserted into the tulip contact, the limiting piece is in limiting abutment with at least one spring contact finger, so that the pressure sensor is in abutment with the spring contact finger in the tulip contact;
the measuring device disclosed in the above two patent documents can only measure one single contact finger at a time, and a plurality of contact fingers in one tulip contact can complete measurement for many times, so that the measuring efficiency is low, and measuring errors are easy to occur.
In a patent document with publication number CN109974914A and the patent name "a method and a device for detecting plum blossom contact distributed contact resistance pressure", a gold-plated optical fiber displacement sensor is rigidly welded to the upper end of a contact finger of a plum blossom contact, and when a moving contact is inserted into the plum blossom contact, the contact pressure of the plum blossom contact is measured by measuring the deformation amount in the circumferential direction between different contact fingers through the rigid-welded gold-plated optical fiber displacement sensor.
The publication number is CN208383351U, in the patent document of the patent name "plum blossom contact pressure tester", discloses a pressure sensing head, pressure sensing head is cyclic annular distribution and mutually independent sensing component and is located the handle of afterbody including a plurality of that are located the head, each sensing component corresponds the contact piece of plum blossom contact, a plurality of sensing component with be connected with amplifier circuit and AD converting circuit between the operation display screen, a plurality of sensing component's signal output part passes through amplifier circuit with AD converting circuit electricity is connected, AD converting circuit's signal output part is connected the operation display screen, during the use inserts pressure sensing head in being surveyed the plum blossom contact, the plum blossom contact is propped open, and each sensing component all receives plum blossom contact radial elastic deformation contact pressure F1 ~ F6, and transmitting the pressure to the corresponding strain gauge to enable the strain gauge to generate deformation and give a pressure signal. The plum blossom contact pressure tester can measure all contact fingers in the plum blossom contact at one time, is high in measurement efficiency, but needs to continuously plug and pull the pressure sensing head during measurement, a sensing assembly in the pressure sensing head belongs to a precise component, is easily damaged under the influence of plugging and pulling force in the plugging and pulling process, the contact pressure of the contact fingers in the deformed plum blossom contact is reduced, whether the contact fingers corresponding to the sensing assembly and the plum blossom contact are reliably contacted or not can not be judged during detection, and misjudgment is easy to occur.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a device for detecting elastic pressure of a tulip contact, wherein the device does not adopt a direct plugging manner, but adopts a manner that a measuring probe is elastically opened to contact with a contact finger, a force sensor is not directly plugged and contacted with the tulip contact, and a measurement probe and an elastic connection device are used for conversion measurement, so as to reduce impact interference during manual plugging and unplugging in the measurement process, improve measurement accuracy while ensuring high measurement efficiency, and ensure the service life of the measuring instrument.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a plum blossom contact elastic pressure detection device, includes installation sleeve, go-between, space bar and measurement probe rod, the go-between is installed the front end of installation sleeve, the go-between inboard is equipped with the bead that the circumference array set up, every fixed one on the bead the space bar, articulated setting between the adjacent space bar the measurement probe rod, every the front end of measuring the probe rod is used for contacting with the contact finger of the plum blossom contact of volume of awaiting measuring, every be equipped with elastic connection device on the rear end lateral surface of measurement probe rod, every elastic connection device corresponds with a miniature force cell and links to each other, miniature force cell is fixed installation sleeve is inboard, and installation sleeve's rear end is fixed with a mounting panel, the mounting panel is fixed continuous with the drive arrangement of arranging in the installation sleeve in, drive arrangement's front end is equipped with the drive taper rod, when the driving taper rod stretches, the rear end of the measuring probe rod is expanded or contracted towards the radial direction, and the front end of the measuring probe rod is contracted or expanded towards the radial direction.
Furthermore, a fixing groove convenient for mounting the miniature force transducer is arranged on the inner side surface of the barrel body of the mounting sleeve, and a wire outlet opening is formed in the barrel body at the rear end of the mounting sleeve.
Furthermore, a supporting seat and a handle are arranged on the outer side of the mounting sleeve.
Furthermore, pin holes are formed in the spacing bars, pin shafts are arranged on the measuring probe rods, and the measuring probe rods hinged between the adjacent spacing bars can flexibly rotate.
Furthermore, a positioning sleeve fixedly connected with one end of the elastic connecting device is arranged on the outer side face of the rear end of the measuring probe rod, and the other end of the elastic connecting device is fixedly connected with a force measuring shaft of the miniature force measuring sensor.
Furthermore, a compression spring or a cylindrical elastic element is arranged in the elastic connecting device.
Furthermore, the miniature force transducer is connected with a measuring circuit, the measuring circuit is connected with a display device, and the measuring circuit and the display device are arranged in the portable instrument box.
Furthermore, the driving device is an electromagnet or a miniature driving motor which can drive the driving taper rod to reciprocate.
Furthermore, a conical surface capable of controlling the contraction distance of the measuring probe rod is arranged in the driving conical rod, and when the driving conical rod extends out, the conical surface is in sliding contact with the inner side surface of the rear end of the measuring probe rod.
The invention has the following beneficial effects:
1. the detection device is provided with the measuring probe rods with the same number as that of the contact fingers in the plum blossom contact to be detected, the measuring probe rods can rotate around the hinge shaft, before measurement, the measuring probe rods shrink towards the center and extend into the plum blossom contact to be detected without contact, during detection, the measuring probe rods are opened to be in contact with the contact fingers in the plum blossom contact, the contact fingers in normal operation can apply certain pressure to the measuring probe rods, so that the pressure applied to the miniature force measuring sensor by the elastic connecting device is changed, whether the pressure of the contact fingers in the plum blossom contact is in a working range can be detected through comparison calculation, whether the pressure of the annular spring meets the requirement is further detected, and the annular spring which does not meet the requirement is convenient to detect and replace;
2. the measuring probe rod is in dynamic contact with the contact finger in the plum blossom contact through elastic opening in the working process, no inserting and pulling impact force exists during detection, no vibration impact is caused to the force transducer, the force transducer does not need inserting and pulling friction, the measurement is accurate and reliable, and the force transducer is not easy to damage;
3. the invention has exquisite structure, does not need to disassemble the plum blossom contact in the power equipment during detection, adopts a plurality of measuring probe rods and force sensors to simultaneously detect the contact fingers in the plum blossom contact, can accurately measure the elastic pressure of each contact finger, and can reliably detect and judge whether the annular spring fails.
4. The plum blossom contact elastic pressure detection device is efficient, reliable, convenient and quick in detection, combines with a regular maintenance plan rule, realizes the advance judgment and prevention of the decompression plum blossom contact, ensures the operation safety of power equipment, provides an effective detection means and a reliable technical support and basis for the fault source search for the maintenance of high-voltage equipment, realizes obvious economic benefit and has higher popularization and application value;
in a word, the invention can improve the measurement accuracy while ensuring high measurement efficiency, and the detection device has stable performance and convenient use and is convenient to popularize and use in the power industry.
Drawings
Fig. 1 is an overall schematic diagram of the plum blossom contact elastic pressure detection device of the invention;
fig. 2 is a schematic top view of the elastic pressure detection device part of the tulip contact of the present invention;
fig. 3 is a schematic perspective view of the plum blossom contact elastic pressure detection device of the present invention with the installation sleeve removed;
FIG. 4 is a perspective view of the interconnection of the connector ring, spacer and measurement probe portion of the present invention;
FIG. 5 is a perspective view of the mounting sleeve of the present invention;
FIG. 6 is a perspective view of the attachment ring of the present invention;
FIG. 7 is a perspective view of a spacer of the present invention;
FIG. 8 is a perspective view of a measurement probe according to the present invention;
fig. 9 is a perspective view of the driving taper rod of the present invention.
Description of reference numerals:
1. installing a sleeve; 11. fixing grooves; 12. an outlet opening; 13. a supporting seat; 14. a handle; 15. a display device; 16. a portable instrument case; 2. a connecting ring; 21. a rib; 3. a spacer bar; 31. a pin hole; 4. measuring the probe rod; 41. a positioning sleeve; 42. a pin shaft; 5. an elastic connection means; 6. a miniature force sensor; 7. mounting a plate; 8. a drive device; 9. driving the conical rod; 91. a conical surface; 10. a measurement circuit.
Detailed Description
The invention is described in further detail below with reference to the following figures and specific examples:
referring to fig. 1-9, a plum blossom contact elastic pressure detection device, includes installation sleeve 1, go-between 2, spacer 3 and measurement probe rod 4, go-between 2 installs the front end at installation sleeve 1, go-between 2 inboard is equipped with the bead 21 that the circumference array set up, every on the bead 21 fixed one the spacer 3, the articulated setting of measuring probe rod 4 between the adjacent spacer 3, the front end of every measuring probe rod 4 is used for contacting with the contact finger of the plum blossom contact of awaiting measuring, every be equipped with elastic connection device 5 on the rear end lateral surface of measuring probe rod 4, every elastic connection device 5 all corresponds with a miniature force cell 6 and links to each other, miniature force cell 6 is fixed in installation sleeve 1 is inboard, the rear end of installation sleeve 1 is fixed with a mounting panel 7, mounting panel 7 is fixed continuous with the drive arrangement 8 of arranging in installation sleeve 1 in, the front end of the driving device 8 is provided with a driving conical rod 9, when the driving conical rod 9 extends out, the rear end of the measuring probe rod 4 is radially expanded to radially expand the front end of the measuring probe rod 4, and when the driving conical rod 9 retracts, the rear end of the measuring probe rod 4 is radially contracted by the action of the elastic connecting device 5 to enable the front end of the measuring probe rod 4 to radially expand the rear end of the measuring probe rod 4. The miniature load cell 6 is connected with a measuring circuit 10, the measuring circuit 10 is further connected with a display device 15, and the measuring circuit 10 and the display device 15 are arranged in a portable instrument box 16. The outer side of the mounting sleeve 1 is provided with a supporting seat 13 and a handle 14.
The measurement circuit 10 is designed conventionally by a person skilled in the art, the measurement circuit 10 comprises a filter circuit capable of eliminating interference signals, a signal amplification and AD conversion modulation circuit, a sampling analysis central processing unit and the like, a circuit board of the tester can be designed by adopting a multilayer board, components and parts adopt a surface mounting process, the compact structure is ensured, and portable handheld application is realized; the sampling precision and the restoring accuracy of the pressure signal are improved by adopting a digital pressure sensor and adopting a method of comprehensively processing time domain sampling and frequency domain sampling.
The plum blossom contact elastic pressure detection device measures the pressure range: 1000N or less, and measurement error: less than or equal to 1 percent; the measuring circuit 10 is also provided with a rechargeable battery, and can continuously supply power for measuring time which is more than or equal to 8 hours.
The plum blossom contact elastic pressure detection device is provided with a plurality of types and specifications matched with plum blossom contacts to be measured, the number of the measuring probe rods 4 is set according to the number of contact fingers in the plum blossom contacts, and the number of the measuring probe rods 4 can be several to dozens.
Referring to fig. 5, a fixing groove 11 for facilitating installation of the micro load cell 6 is formed on the inner side surface of the cylinder body of the installation sleeve 1, and an outlet opening 12 is formed in the cylinder body at the rear end of the installation sleeve 1.
Referring to fig. 7, pin holes 31 are formed in the spacing bars 3, pin shafts 42 are formed on the measuring probe rods 4, and the measuring probe rods 4 hinged between adjacent spacing bars 3 can flexibly rotate; the precision of parts is required to be guaranteed during processing and assembly, the measurement probe rod 4 can smoothly swing around the pin shaft 42 after assembly, when the spacing bar 3, the measurement probe rod 4 and the connecting ring 2 are assembled, a cylindrical auxiliary assembly fixture is adopted for positioning, the assembly precision is guaranteed, and the spacing bar 3 is riveted in a positioning hole in the cylinder of the connecting ring 2 through a rivet.
Referring to fig. 8, a positioning sleeve 41 fixedly connected to one end of the elastic connection device 5 is disposed on an outer side surface of the rear end of the measurement probe 4, the other end of the elastic connection device 5 is fixedly connected to a force measuring shaft of the micro force measuring sensor 6, and both ends of the elastic connection device 5 need to be fixedly connected reliably to avoid loosening. The miniature load cell 6 may be a MANTON brand L10A sensor, Japan, or other similar brand of miniature load cell.
The elastic connecting device 5 is internally provided with a compression spring or a columnar elastic element, the elastic connecting device 5 has certain elastic force, when the driving taper rod 9 retracts, the elastic connecting device 5 can radially contract the rear end of the measuring probe rod 4, so that the front end of the measuring probe rod 4 is radially expanded, and the front end of the measuring probe rod 4 is driven to be in contact with a contact finger of a plum blossom contact to be measured.
The driving device 8 is an electromagnet or a micro driving motor, such as a micro stepping motor with a micro lead screw, which can drive the driving taper rod 9 to reciprocate.
As shown in fig. 9, a conical surface 91 capable of controlling the contraction distance of the measurement probe rod 4 is arranged in the driving conical rod 9, when the driving conical rod 9 extends out, the conical surface 91 is in sliding contact with the inner side surface of the rear end of the measurement probe rod 4, so that the rear end of the measurement probe rod 4 is radially expanded, the front end of the measurement probe rod 4 is radially contracted, and the measurement probe rod 4 which is circumferentially arranged in a whole circle can conveniently extend into the quincuncial contact to be measured without contact.
The working principle of the invention is as follows:
before measurement, the driving device 8 drives the driving conical rod 9 to extend out, the conical surface 91 of the driving conical rod 9 is in sliding contact with the inner side surface of the rear end of the measuring probe rod 4, the rear end of the measuring probe rod 4 is radially expanded, and the front end of the measuring probe rod 4 is radially contracted;
when in measurement, the whole circle of measuring probe rods 4 extend into the plum blossom contact to be measured without contact, each measuring probe rod 4 is aligned with one contact finger in the plum blossom contact, the driving device 8 drives the driving conical rod 9 to retract through circuit control, the rear end of each measuring probe rod 4 is acted by the elastic connecting device 5 to contract the rear end of each measuring probe rod 4 in the radial direction so that the front end of each measuring probe rod 4 is expanded in the radial direction, the front end of each measuring probe rod 4 is driven to be in contact with the contact finger of the plum blossom contact to be measured, the contact finger of the plum blossom contact with the pressure in the working range can apply certain pressure to the front end of each measuring probe rod 4 in the contact process, the elastic connecting device 5 is made to rebound properly, the miniature force measuring sensor 6 measures the pressure change of the elastic connecting device 5, whether the pressure of the contact finger in the plum blossom contact is in the working range can be detected through comparison calculation, and further whether the pressure of the annular, the ring springs which do not meet the requirements can be conveniently detected and replaced, and when unqualified items are detected during measurement, the ring springs can be displayed in the display device 15 and send alarm signals, so that the on-site maintenance work quality level can be effectively improved;
after the measurement is finished, the driving device 8 drives the driving conical rod 9 to extend out, the conical surface 91 of the driving conical rod 9 is in sliding contact with the inner side surface of the rear end of the measuring probe rod 4, the rear end of the measuring probe rod 4 is radially expanded, the front end of the measuring probe rod 4 is radially contracted, and the detection device is taken out of the plum blossom contact to be measured.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. The utility model provides a plum blossom contact elastic pressure detection device which characterized in that: including installation sleeve (1), go-between (2), space bar (3) and measurement probe rod (4), install go-between (2) the front end of installation sleeve (1), go-between (2) inboard is equipped with bead (21) that the circumference array set up, every fixed one on bead (21) space bar (3), articulated setting between adjacent space bar (3) measure probe rod (4), every the front end of measuring probe rod (4) is used for contacting with the contact finger of the plum blossom contact of awaiting measuring, every be equipped with elastic connection device (5) on the rear end lateral surface of measuring probe rod (4), every elastic connection device (5) all correspond with a miniature force cell (6) and link to each other, miniature force cell (6) are fixed installation sleeve (1) inboard, the rear end of installation sleeve (1) is fixed with a mounting panel (7), the mounting plate (7) is fixedly connected with a driving device (8) arranged in the mounting sleeve (1), a driving conical rod (9) is arranged at the front end of the driving device (8), and when the driving conical rod (9) stretches, the rear end of the measuring probe rod (4) is radially expanded or contracted, so that the front end of the measuring probe rod (4) is radially contracted or expanded; and a positioning sleeve (41) fixedly connected with one end of the elastic connecting device (5) is arranged on the outer side surface of the rear end of the measuring probe rod (4), and the other end of the elastic connecting device (5) is fixedly connected with a force measuring shaft of the miniature force measuring sensor (6).
2. The plum blossom contact elastic pressure detection device of claim 1, characterized in that: the miniature force cell sensor is characterized in that a fixing groove (11) convenient for installation of the miniature force cell sensor (6) is formed in the inner side surface of the barrel body of the installation sleeve (1), and an outlet opening (12) is formed in the barrel body at the rear end of the installation sleeve (1).
3. The plum blossom contact elastic pressure detecting device as claimed in claim 1 or 2, wherein: the outer side of the mounting sleeve (1) is provided with a supporting seat (13) and a handle (14).
4. The plum blossom contact elastic pressure detection device of claim 1, characterized in that: be equipped with pinhole (31) in spacer (3), be equipped with round pin axle (42) on measuring probe rod (4), articulated measuring probe rod (4) can rotate in a flexible way between adjacent spacer (3).
5. The plum blossom contact elastic pressure detecting device as claimed in claim 1 or 4, wherein: a compression spring or a columnar elastic element is arranged in the elastic connecting device (5).
6. The plum blossom contact elastic pressure detection device of claim 1, characterized in that: the miniature force transducer (6) is connected with the measuring circuit (10), the measuring circuit (10) is connected with the display device (15), and the measuring circuit (10) and the display device (15) are arranged in the portable instrument box (16).
7. The plum blossom contact elastic pressure detection device of claim 1, characterized in that: the driving device (8) is an electromagnet or a miniature driving motor which can drive the driving taper rod (9) to reciprocate.
8. The plum blossom contact elastic pressure detection device of claim 1, characterized in that: the measuring probe rod is characterized in that a conical surface (91) capable of controlling the contraction distance of the measuring probe rod (4) is arranged in the driving conical rod (9), and when the driving conical rod (9) extends out, the conical surface (91) is in sliding contact with the inner side surface of the rear end of the measuring probe rod (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911066836.0A CN110823434B (en) | 2019-11-04 | 2019-11-04 | Plum blossom contact elastic pressure detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911066836.0A CN110823434B (en) | 2019-11-04 | 2019-11-04 | Plum blossom contact elastic pressure detection device |
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| CN110823434A CN110823434A (en) | 2020-02-21 |
| CN110823434B true CN110823434B (en) | 2021-04-27 |
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|---|---|---|---|---|
| CN111487022B (en) * | 2020-04-27 | 2022-05-03 | 泰安市泰和电力设备有限公司 | Elasticity measurement equipment and method for contact spring |
| CN111928984A (en) * | 2020-05-29 | 2020-11-13 | 廊坊研领科技有限公司 | Plum blossom contact tensioning pressure measurement ware |
| CN113465804B (en) * | 2021-06-24 | 2023-09-12 | 珠海市集森电器有限公司 | Quincuncial contact finger clamping force detection method and device |
| CN113916426B (en) * | 2021-09-01 | 2024-04-12 | 保定德优电气设备制造有限公司 | Detection device for contact pressure of contact finger of quincuncial contact |
| CN113835025B (en) * | 2021-09-18 | 2022-05-27 | 广东电网有限责任公司 | On-load tap-changer action simulation test device and test method |
| CN114544352B (en) * | 2022-02-28 | 2023-01-06 | 淮安沛能电力技术有限公司 | Connector pressure test equipment based on electric power safety |
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| CN208238989U (en) * | 2018-06-01 | 2018-12-14 | 国网河北省电力有限公司石家庄供电分公司 | Mume flower contact clamps tension gauge |
| CN208383351U (en) * | 2018-05-31 | 2019-01-15 | 深圳市飞越开关设备有限公司 | Mume flower contact pressure tester |
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2019
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| JPH08222063A (en) * | 1995-02-20 | 1996-08-30 | Nissin Electric Co Ltd | Switch |
| CN204085863U (en) * | 2014-08-25 | 2015-01-07 | 天一同益电气股份有限公司 | Mume flower contact pressure sensing tools |
| CN105547528A (en) * | 2016-01-28 | 2016-05-04 | 天一同益电气股份有限公司 | Testing device capable of testing work pressure of plum-blossom-shaped contact |
| CN207689059U (en) * | 2017-11-21 | 2018-08-03 | 范永涛 | Plum blossom moving contact pressure detecting instrument of cluster |
| CN208383351U (en) * | 2018-05-31 | 2019-01-15 | 深圳市飞越开关设备有限公司 | Mume flower contact pressure tester |
| CN208238989U (en) * | 2018-06-01 | 2018-12-14 | 国网河北省电力有限公司石家庄供电分公司 | Mume flower contact clamps tension gauge |
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