CN112504529A - Force measuring device for main shaft assembly contact piece - Google Patents
Force measuring device for main shaft assembly contact piece Download PDFInfo
- Publication number
- CN112504529A CN112504529A CN202011254746.7A CN202011254746A CN112504529A CN 112504529 A CN112504529 A CN 112504529A CN 202011254746 A CN202011254746 A CN 202011254746A CN 112504529 A CN112504529 A CN 112504529A
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- Prior art keywords
- plate
- force measuring
- main shaft
- measuring device
- contact piece
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Links
- 238000000605 extraction Methods 0.000 claims abstract description 18
- 238000003780 insertion Methods 0.000 claims abstract description 18
- 230000037431 insertion Effects 0.000 claims abstract description 18
- 238000012360 testing method Methods 0.000 claims abstract description 7
- 230000020347 spindle assembly Effects 0.000 claims description 17
- 230000003014 reinforcing effect Effects 0.000 claims description 15
- 238000005096 rolling process Methods 0.000 claims description 3
- 239000003351 stiffener Substances 0.000 claims 2
- 238000005259 measurement Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 5
- 238000013461 design Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011079 streamline operation Methods 0.000 description 1
Images
Classifications
-
- 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
Abstract
The invention discloses a force measuring device for a main shaft assembled contact piece, which comprises: the main shaft assembly force measuring clamp is used for mounting a main shaft, and during testing, the main shaft provided with the contact piece is mounted on the main shaft assembly force measuring clamp; the contact piece force measuring mechanism is movably arranged on the main shaft assembly force measuring clamp; and the driving mechanism is arranged on the main shaft assembly force measuring clamp and drives the contact piece force measuring mechanism to move so as to measure the insertion and extraction force between the contact pieces arranged on the main shaft. The invention is used for measuring the force of the contact piece assembled on the main shaft of the ring main unit gas tank, and has the following advantages compared with the prior art: 1) the pneumatic device can measure and adjust the insertion and extraction force of the main shaft assembly contact piece by a simple and efficient method; 2) the measurement is accurate and the precision is high; 3) the limiting device is clear at a glance and convenient to use; 4) the structure is simple and reliable; 5) the occupied space is small; 6) the safety factor is high.
Description
Technical Field
The invention relates to the technical field of ring main unit gas tank part testing, in particular to a force measuring device for a main shaft assembled contact piece.
Background
At present, a method for measuring the insertion and extraction force of a contact piece assembled on a main shaft of a ring main unit gas box adopted at home and abroad is a method for directly measuring by a force measuring device, and the method is time-consuming and labor-consuming, is influenced by equipment and human factors, and has large measurement error. The pre-pressure of the spring determines the magnitude of the insertion and extraction force, the magnitude of the insertion and extraction force of the main shaft assembling contact piece directly influences the product quality, and the excessive or insufficient insertion and extraction force can cause unreliable main shaft assembling: the ring main unit is large, so that the ring main unit cannot normally close or open the gate; and the contact is small, so that the contact cannot be in close contact, and the ring main unit cannot be normally powered on after being switched on. Therefore, the plugging force must be in a controllable and reasonable range to ensure the safe and reliable operation of the ring main unit. According to technical requirements and production requirements, the design of a force measuring device for a spindle assembled contact piece is imperative. Because the main shaft assembly contact piece is assembled and debugged at a specific station, the clamp also needs to be fixed on a certain working table for use, so that the accuracy of measurement and the personal safety of a user are ensured.
In addition, the design and development direction of the ring main unit air box tends to streamline operation at present, the main shaft assembly is used as an independent core item, and the main shaft assembly is assembled with the ring main unit air box after being independently assembled and debugged, so that a movable tool capable of fixing the main shaft assembly is needed to solve the problem.
Disclosure of Invention
The invention aims to solve the technical problems of measurement accuracy, efficiency, safety, quality and the like caused by a main shaft assembled contact piece force measurement mode in the production of a traditional ring main unit gas tank, and provides a pneumatic type main shaft assembled contact piece force measurement device designed for solving the production problems. The tool is suitable for factories producing various contact pieces for assembling the main shaft of the ring main unit air box, and is a necessary tool for assembling the main shaft of the ring main unit air box. The design is unique, makes things convenient for the dismouting to the accessible is changed the part and is upgraded and reform transform the device.
The technical problem to be solved by the invention can be realized by the following technical scheme:
a spindle assembly wafer force measuring device comprising:
the main shaft assembly force measuring clamp is used for mounting a main shaft, and during testing, the main shaft provided with the contact piece is mounted on the main shaft assembly force measuring clamp;
the contact piece force measuring mechanism is movably arranged on the main shaft assembly force measuring clamp;
and the driving mechanism is arranged on the main shaft assembly force measuring clamp and drives the contact piece force measuring mechanism to move so as to measure the insertion and extraction force between the contact pieces arranged on the main shaft.
In a preferred embodiment of the present invention, the spindle assembly force measuring jig comprises a bottom plate, a fixed plate, a movable plate, a pair of wall plates, a front reinforcing plate, and a sliding plate, the fixed plate and the pair of wall plates being fixed to the bottom plate in front and rear directions in an operation direction, the pair of wall plates being arranged in parallel; the left side and the right side of the front reinforcing plate are fixedly connected with one sides of the pair of wall plates facing an operator, and the sliding plate is arranged at the tops of the pair of wall plates in a sliding manner; the moving plate is arranged on the bottom plate in a sliding mode, and the main shaft provided with the contact piece is arranged on the moving plate; the contact piece force measuring mechanism is installed on the sliding plate, the driving mechanism is installed on the front reinforcing plate and located between the pair of wall plates, and the driving end of the driving mechanism is in driving connection with the sliding plate to drive the sliding plate to slide on the pair of wall plates.
In a preferred embodiment of the present invention, the spindle assembly force measuring clamp further includes a left support plate, a right support plate, and a stop block, the left support plate and the right support plate are respectively fixed on the left side and the right side of the moving plate, the stop block is fixed at the middle position of the moving plate, a plug pin is installed on the right support plate, and a positioning plug pin is installed on the stop block; the main shaft assembled with the contact piece is arranged on the left supporting plate and the right supporting plate and is locked by the bolt and the positioning bolt.
In a preferred embodiment of the present invention, the spindle assembly force measuring clamp further includes a fixed plate, a left baffle, and a right baffle, the moving plate is slidably disposed on the fixed plate, and the left baffle and the right baffle are respectively fixed on positions of the bottom plate corresponding to left and right sides of the fixed plate, so as to limit a left-right sliding position of the moving plate on the fixed plate.
In a preferred embodiment of the present invention, the spindle assembly dynamometric clamp further includes a rear reinforcing plate, and left and right sides of the rear reinforcing plate are fixedly connected to a side of the pair of wall plates facing away from the operator.
In a preferred embodiment of the present invention, a plurality of rollers are provided on the top of the pair of wall panels, and the sliding plate is in rolling engagement with the plurality of rollers.
In a preferred embodiment of the invention, the contact piece force measuring mechanism comprises a force measuring device and a force measuring plate, the force measuring device is fixedly installed on the sliding plate, the force measuring plate is arranged on the sliding plate in a sliding mode, a force measuring head of the force measuring device is connected with the force measuring plate, and the force measuring plate can move along with the sliding plate and can move by itself to test the insertion and extraction force of the contact piece on the main shaft.
In a preferred embodiment of the invention, the force measuring head of the force measuring device is connected to the force measuring plate by a pull hook and a pull ring, wherein one end of the pull hook is connected to the force measuring head of the force measuring device, the other end of the pull hook is connected to one end of the pull ring, and the other end of the pull ring is connected to the force measuring plate.
In a preferred embodiment of the present invention, a pair of guide plates are fixedly mounted on the sliding plate, each guide plate is provided with a guide slot, the force-measuring plate is slidably disposed between the pair of guide plates, and the force-measuring plate is symmetrically provided with guide pins which pass through the guide slots of the corresponding guide plate.
In a preferred embodiment of the present invention, the driving mechanism includes a cylinder, a piston rod fixing plate, and a cylinder wall plate, wherein a cylinder body portion of the cylinder is fixed to the front reinforcing plate, a piston end of the cylinder is fixed to the piston rod fixing plate, one end of the cylinder wall plate is fixed to the piston rod fixing plate, and the other end of the cylinder wall plate is fixed to the sliding plate.
Due to the adoption of the technical scheme, the invention is used for measuring the force of the contact piece assembled on the main shaft of the ring main unit air box, and has great advantages compared with the prior art: 1) the pneumatic device can measure and adjust the insertion and extraction force of the main shaft assembly contact piece by a simple and efficient method; 2) the measurement is accurate and the precision is high; 3) the limiting device is clear at a glance and convenient to use; 4) the structure is simple and reliable; 5) the occupied space is small; 6) the safety factor is high.
Drawings
FIG. 1 is a perspective view of the overall structure of a spindle-mounted contact force measuring device according to the present invention.
FIG. 2 is a front view of the spindle-mounted wafer force measuring device of the present invention.
Fig. 3 is a side view of fig. 2.
Fig. 4 is a top view of fig. 2.
Fig. 5 is a rear view of fig. 2.
Fig. 6 is a schematic view of the spindle assembled contact force measuring device of the present invention for measuring the insertion and extraction force of the contact on the spindle.
Fig. 7 is a schematic diagram of the force measuring plate for measuring the insertion and extraction force of the contact piece on the spindle.
Detailed Description
The invention is further described below in conjunction with the appended drawings and detailed description.
Referring to fig. 1, there is shown a spindle-mounted contact force measuring device including a spindle-mounted force measuring jig 20, a contact force measuring mechanism 10, and a driving mechanism 30, the spindle-mounted force measuring jig 20 being used to mount a spindle mounted with a contact. The contact piece force measuring mechanism 10 is installed on the spindle assembly force measuring clamp 20, and the contact piece insertion and extraction force on the spindle is measured in a motion mode. The driving mechanism 30 is also installed on the main shaft assembly force measuring clamp 20, and the driving mechanism 30 drives the contact piece force measuring mechanism 10 to move so as to measure the insertion and extraction force between the contact pieces installed on the main shaft.
Referring to fig. 2 to 5, the spindle assembly force measuring clamp 20 includes a base plate 270, a fixed plate 290, a moving plate 280, a pair of wall plates 160, a front reinforcing plate 120, a rear reinforcing plate 170, and a sliding plate 110.
The base plate 270 is used to mount and position the various components and to secure the spindle assembly force measurement clamp 30 to the countertop. The fixed plate 290 and the pair of wall plates 160 are fixed to the base plate 270 in the front-rear direction as viewed in the operation direction, with the fixed plate 290 being located at the front and closer to the operator and the pair of wall plates 160 being located at the rear and farther from the operator. A pair of wall plates 160 are arranged in parallel, with a space 161 between the pair of wall plates 160 for mounting the driving mechanism 30.
In order to reinforce the strength between the pair of wall plates 160, left and right sides of the front reinforcing plate 120 are fixedly connected to a side of the pair of wall plates 160 facing the operator, and left and right sides of the rear reinforcing plate 170 are fixedly connected to a side of the pair of wall plates 160 facing away from the operator.
The sliding plate 110 is slidably disposed on the top of the pair of wall plates 160, and a plurality of rollers 340 are disposed on the top of the pair of wall plates 160, and the sliding plate 110 is in rolling engagement with the plurality of rollers 340, thereby facilitating smooth movement of the sliding plate 110.
The moving plate 280 is slidably disposed on the fixed plate 290 to facilitate adjustment of spindle assembly items by an operator, inner and outer slide rails are disposed between the moving plate 280 and the fixed plate 290, the inner slide rail is fixed on the fixed plate 290 by bolts, the outer slide rail is fixed on the moving plate 280 by bolts, and the inner and outer slide rails are slidably engaged with each other to facilitate sliding of the moving plate 280 on the fixed plate 290.
In order to limit the sliding range of the moving plate 280 on the fixed plate 290, the spindle assembly force measuring clamp further includes a left baffle 260 and a right baffle 260a, and the left baffle 260 and the right baffle 260a are respectively fixed on the bottom plate 270 at positions corresponding to the left and right sides of the fixed plate 290, so as to limit the left and right sliding positions of the moving plate 280 on the fixed plate 290.
In order to install and adjust the spindle, the spindle assembly force measuring clamp 30 further comprises a left support plate 130, a right support plate 140 and a stop block 250, wherein the left support plate 130 and the right support plate 140 are respectively fixed at the left side and the right side of the moving plate 280, the stop block 250 is fixed at the middle position of the moving plate 280, a plug 300 is installed on the right support plate 140, and a positioning plug 240 is installed on the stop block 250; the spindle equipped with the contact blades is mounted on the left and right support plates 130 and 140 and locked by the latch 300 and the positioning latch 240. The positioning pin 240 is matched with the left support plate 130, the right support plate 140 and the pin 300 to limit the assembly of the spindle, and the positioning pin 240, the pin 300 and the moving plate 280 need to be operated when the spindle is used.
The contact plate force measuring mechanism 10 comprises a force measuring device 10a and a force measuring plate 230, wherein the force measuring device 10a adopts a pointer type force measuring device, is economical and practical and has the function of memorizing the maximum pulling force. The force-measuring device 10a is fixedly mounted on the sliding plate 110 by a meter frame 150 and a pressure plate 180, wherein the meter frame 150 is fixedly mounted on the sliding plate 110 by bolts, and the pressure plate 180 fixedly mounts the force-measuring device 10a on the meter frame 150.
A pair of guide plates 220 are fixedly mounted on the sliding plate 110, each guide plate 220 is provided with a guide slot 221, the force-measuring plate 230 is slidably disposed between the pair of guide plates 220, the force-measuring plate 230 is symmetrically provided with guide pins 210, and the guide pins 210 pass through the guide slots 221 of the corresponding guide plates 220. The force measuring head of the force measuring device 10a is connected with the force measuring plate 230 through a drag hook 190 and a pull ring 200, wherein one end of the drag hook 190 is connected with the force measuring head of the force measuring device 10a, the other end of the drag hook 190 is connected with one end of the pull ring 200, and the other end of the pull ring 200 is connected with the force measuring plate 230. Thus, the force plate 230 can move along with the sliding plate 110 and can move by itself to test the insertion and extraction force of the contact piece on the main shaft.
The driving mechanism 30 is disposed in the space 161 between the pair of wall plates 160 and includes a cylinder 330, a piston rod fixing plate 320, and a cylinder wall plate 310, wherein a cylinder portion of the cylinder 330 is fixed to the front reinforcing plate 120 by a nut, a piston end of the cylinder 330 is fixed to the piston rod fixing plate 320, one end of the cylinder wall plate 310 is fixed to the piston rod fixing plate 320, and the other end of the cylinder wall plate 310 is fixed to the sliding plate 110. Thus, by operating the cylinder 330, the piston of the cylinder 330 can move the slide plate 110 in the main axis direction along the roller 340 through the rod fixing plate 320 and the cylinder wall plate 310.
Referring to fig. 6 and 7, the working principle of the spindle-mounted contact force measuring device of the present invention is as follows:
1) the main shaft 40 to be tested with the contact piece 360 is placed on the main shaft assembly force measuring clamp 20, the left end and the right end of the main shaft 40 are embedded into the clamping grooves of the left supporting plate 130 and the right supporting plate 140, the lower end of the main shaft is sleeved on the positioning bolt 240 arranged on the stop block 250, and the main shaft 40 is locked by the bolt 300.
2) Fixing the position of the force-measuring device 10a and pressing a reset button on the force-measuring device 10a to zero the pointer of the force-measuring device 10a, the force-measuring device 10a must be periodically tested for use.
3) Starting the air cylinder 330 in the driving mechanism 30, the piston of the air cylinder 330 can make the sliding plate 110 move towards the main shaft 40 along the roller 340 through the piston rod fixing plate 320 and the air cylinder wall plate 330, the sliding plate 110 drives the components such as the force measuring device 10a, the force measuring plate 230 and the like on the sliding plate 110 to slide towards the main shaft 40, and the force measuring device 10a is used for measuring the force of the contact piece 360 on the main shaft 40: when the force is measured downwards, the drag hook 190 and the drag ring 200 are matched to abut against the force measuring plate 230, and the drag hook and the drag ring slide in the guide groove 221 on the guide plate 220 through the guide pin 210, and the sliding distance shows a value on the force measuring device 10a, namely the plugging force of the contact piece 360; when moving upward, the drag hook 190, the drag ring 200, and the force measuring plate 230 are mutually matched and are reset by the guide pin 210 sliding in the guide slot 221 of the guide plate 220.
4) The outer end boss of the contact piece 360 is coated with a proper amount of lubricating grease, and the compression amount of the spring 350 (as shown in figure 5) at the outer side of the contact piece 360 is adjusted through bolts and nuts at two sides, so that the force measuring device 10a can display data as a required value, and the plug-pull force meets the inspection standard.
5) After the adjustment is completed, the fastening position of the bolt is marked by a marking pen.
6) After one adjustment is made, the latch 300 is released and the position of the retaining latch 240 is moved out, and the adjustment is changed by sliding the movable plate 280, as described above.
7) And sequentially adjusting the insertion and extraction forces of various contact pieces of the spindle 40 to be tested until the insertion and extraction forces meet the requirements.
Claims (10)
1. A force measuring device for a spindle assembled contact piece is characterized by comprising:
the main shaft assembly force measuring clamp is used for mounting a main shaft, and during testing, the main shaft provided with the contact piece is mounted on the main shaft assembly force measuring clamp;
the contact piece force measuring mechanism is movably arranged on the main shaft assembly force measuring clamp;
and the driving mechanism is arranged on the main shaft assembly force measuring clamp and drives the contact piece force measuring mechanism to move so as to measure the insertion and extraction force between the contact pieces arranged on the main shaft.
2. The spindle assembly contact force measuring device of claim 1, wherein the spindle assembly force measuring fixture comprises a base plate, a fixed plate, a moving plate, a pair of wall plates, a front reinforcing plate, a sliding plate, the fixed plate and the pair of wall plates being fixed to the base plate in front and back in an operational direction, the pair of wall plates being arranged in parallel; the left side and the right side of the front reinforcing plate are fixedly connected with one sides of the pair of wall plates facing an operator, and the sliding plate is arranged at the tops of the pair of wall plates in a sliding manner; the moving plate is arranged on the bottom plate in a sliding mode, and the main shaft provided with the contact piece is arranged on the moving plate; the contact piece force measuring mechanism is installed on the sliding plate, the driving mechanism is installed on the front reinforcing plate and located between the pair of wall plates, and the driving end of the driving mechanism is in driving connection with the sliding plate to drive the sliding plate to slide on the pair of wall plates.
3. The force measuring device for the assembly of the spindle with the contact plate as claimed in claim 2, wherein the force measuring clamp for the assembly of the spindle further comprises a left support plate, a right support plate and a stop block, the left support plate and the right support plate are respectively fixed at the left side and the right side of the movable plate, the stop block is fixed at the middle position of the movable plate, a bolt is installed on the right support plate, and a positioning bolt is installed on the stop block; the main shaft assembled with the contact piece is arranged on the left supporting plate and the right supporting plate and is locked by the bolt and the positioning bolt.
4. The force measuring device for the assembly of the spindle with the touch plate as claimed in claim 3, wherein the force measuring clamp for the assembly of the spindle further comprises a fixed plate, a left baffle and a right baffle, the moving plate is slidably disposed on the fixed plate, and the left baffle and the right baffle are respectively fixed on the bottom plate at positions corresponding to the left side and the right side of the fixed plate for limiting the sliding position of the moving plate on the fixed plate.
5. The spindle assembly contact force measuring device of claim 2, wherein the spindle assembly force measuring fixture further comprises a rear stiffener, the rear stiffener having left and right sides fixedly attached to a side of the pair of wall panels facing away from the operator.
6. A spindle mounted contact force measuring device as claimed in claim 2, wherein rollers are provided on top of said pair of wall plates, and said slide plate is in rolling engagement with the rollers.
7. The spindle assembly contact force measuring device of claim 1, wherein the contact force measuring mechanism comprises a force measuring device and a force measuring plate, the force measuring device is fixedly mounted on the sliding plate, the force measuring plate is slidably disposed on the sliding plate, a force measuring head of the force measuring device is connected with the force measuring plate, and the force measuring plate can move along with the sliding plate and can move by itself to test the insertion and extraction force of the contact on the spindle.
8. The force measuring device of claim 7, wherein the force measuring head of the force measuring device is connected to the force measuring plate via a pull hook and a pull ring, wherein one end of the pull hook is connected to the force measuring head of the force measuring device, the other end of the pull hook is connected to one end of the pull ring, and the other end of the pull ring is connected to the force measuring plate.
9. The force measuring device for the spindle mounted contact piece of claim 7, wherein a pair of guide plates are fixedly mounted on the sliding plate, each guide plate is provided with a guide slot, the force measuring plate is slidably arranged between the pair of guide plates, and guide pins are symmetrically arranged on the force measuring plate and pass through the guide slots on the corresponding guide plate.
10. The spindle assembly contact force measuring device of claim 1, wherein the driving mechanism comprises a cylinder, a piston rod fixing plate and a cylinder wall plate, a cylinder portion of the cylinder is fixed on the front reinforcing plate, a piston end of the cylinder is fixed on the piston rod fixing plate, one end of the cylinder wall plate is fixed on the piston rod fixing plate, and the other end of the cylinder wall plate is fixed on the sliding plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011254746.7A CN112504529A (en) | 2020-11-11 | 2020-11-11 | Force measuring device for main shaft assembly contact piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011254746.7A CN112504529A (en) | 2020-11-11 | 2020-11-11 | Force measuring device for main shaft assembly contact piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112504529A true CN112504529A (en) | 2021-03-16 |
Family
ID=74957815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011254746.7A Pending CN112504529A (en) | 2020-11-11 | 2020-11-11 | Force measuring device for main shaft assembly contact piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112504529A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680152A (en) * | 2012-05-14 | 2012-09-19 | 浙江理工大学 | Device for testing insertion and withdrawal forces of contact elements of electric connectors in high temperature environments |
| CN102840934A (en) * | 2012-09-03 | 2012-12-26 | 柳州科路测量仪器有限责任公司 | Change-over switch contact pressure detection equipment |
| CN104819839A (en) * | 2015-05-20 | 2015-08-05 | 河北工业大学 | Electric connector contact element plug-pull feature tester |
| CN106556565A (en) * | 2015-09-30 | 2017-04-05 | 江苏大全凯帆电器股份有限公司 | The test fixture of contact of breaker contact engaging and separating force |
| CN206855301U (en) * | 2017-05-31 | 2018-01-09 | 希捷爱斯（上海）电气有限公司 | A kind of measured material of grounding contact contact engaging and separating force |
| CN207248408U (en) * | 2017-09-26 | 2018-04-17 | 珠海科迈尔仪器仪表有限公司 | High-precision intelligent withdrawal force testing system |
| CN207458832U (en) * | 2016-12-29 | 2018-06-05 | 青岛特锐德电气股份有限公司 | A kind of three-stations load switch |
| US20180231426A1 (en) * | 2017-02-16 | 2018-08-16 | C. R. Bard, Inc. | Insertion and withdrawal force measurement system |
-
2020
- 2020-11-11 CN CN202011254746.7A patent/CN112504529A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680152A (en) * | 2012-05-14 | 2012-09-19 | 浙江理工大学 | Device for testing insertion and withdrawal forces of contact elements of electric connectors in high temperature environments |
| CN102840934A (en) * | 2012-09-03 | 2012-12-26 | 柳州科路测量仪器有限责任公司 | Change-over switch contact pressure detection equipment |
| CN104819839A (en) * | 2015-05-20 | 2015-08-05 | 河北工业大学 | Electric connector contact element plug-pull feature tester |
| CN106556565A (en) * | 2015-09-30 | 2017-04-05 | 江苏大全凯帆电器股份有限公司 | The test fixture of contact of breaker contact engaging and separating force |
| CN207458832U (en) * | 2016-12-29 | 2018-06-05 | 青岛特锐德电气股份有限公司 | A kind of three-stations load switch |
| US20180231426A1 (en) * | 2017-02-16 | 2018-08-16 | C. R. Bard, Inc. | Insertion and withdrawal force measurement system |
| CN206855301U (en) * | 2017-05-31 | 2018-01-09 | 希捷爱斯（上海）电气有限公司 | A kind of measured material of grounding contact contact engaging and separating force |
| CN207248408U (en) * | 2017-09-26 | 2018-04-17 | 珠海科迈尔仪器仪表有限公司 | High-precision intelligent withdrawal force testing system |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210316 |
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| RJ01 | Rejection of invention patent application after publication |