CN109323787B - Contact finger clamping force measuring device - Google Patents
Contact finger clamping force measuring device Download PDFInfo
- Publication number
- CN109323787B CN109323787B CN201710646605.1A CN201710646605A CN109323787B CN 109323787 B CN109323787 B CN 109323787B CN 201710646605 A CN201710646605 A CN 201710646605A CN 109323787 B CN109323787 B CN 109323787B
- Authority
- CN
- China
- Prior art keywords
- measuring
- probe
- probe rod
- contact finger
- cross beam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000000523 sample Substances 0.000 claims abstract description 131
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000013011 mating Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 5
- 230000007774 longterm Effects 0.000 description 2
- 238000002679 ablation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000001503 joint Anatomy 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
- G01L5/0028—Force sensors associated with force applying means
Abstract
The invention relates to a device for measuring a clamping force of a contact finger. The device for measuring the clamping force of the contact finger comprises a device frame, wherein more than two chucks for clamping the contact finger seat are arranged on the device frame, a measuring probe rod is further arranged on the device frame, one end of the measuring probe rod is provided with a probe which is used for extending into the contact finger seat along with the measuring probe rod so as to apply pressure to the contact finger to be measured along the radial direction of the contact finger seat, and the probe comprises a pressure measuring device. In the actual use process of the measuring device for the clamping force of the contact fingers, the measuring device and the contact finger seat are clamped and fixed through the chuck, then the measuring probe rod connected with the probe is inserted into the contact finger hole, the probe is moved to enable the probe to tightly press the contact fingers, and the clamping force of the contact fingers is measured through the pressure measuring device in the probe.
Description
Technical Field
The invention relates to a device for measuring a clamping force of a contact finger.
Background
In high-voltage switch equipment, a separable contact finger structure is mostly adopted for the butt joint of a main conductive loop, a contact is inserted into a contact finger, and the contact finger clamps the contact to realize the reliable contact of the contact finger and the contact finger. The reliable connection of the contact and the contact finger has important influence on the temperature rise of the switch equipment in long-term work and the electric stability and the thermal stability of the switch equipment in short-circuit current impact, when the clamping force is larger, the electric stability and the thermal stability of electric contact can be ensured, but the friction force is increased due to large clamping force, and the contact finger is easy to deform under long-term stress to cause poor contact and ablation; when the clamping force is small, the electric stability and the thermal stability of the electric contact cannot be ensured, so that the contact structure is damaged. Therefore, it is important to design and select a proper finger clamping force, which requires some measuring devices for measuring the finger clamping force.
Disclosure of Invention
The invention aims to provide a contact finger clamping force measuring device for measuring the clamping force of a contact finger.
In order to achieve the purpose, the technical scheme of the device for measuring the clamping force of the contact finger is as follows: the device comprises a device frame, wherein more than two chucks used for clamping a contact finger seat are arranged on the device frame, a measuring probe rod is further arranged on the device frame, one end of the measuring probe rod is provided with a probe used for extending into the contact finger seat along with the measuring probe rod so as to apply pressure to a contact finger to be measured along the radial direction of the contact finger seat, and the probe comprises a pressure measuring device. In the actual use process of the measuring device for the clamping force of the contact fingers, the measuring device and the contact finger seat are clamped and fixed through the chuck, then the measuring probe rod connected with the probe is inserted into the contact finger hole, the probe is moved to enable the probe to tightly press the contact fingers, and the clamping force of the contact fingers is measured through the pressure measuring device in the probe.
The device frame comprises a cross beam and a connecting arm installed on the cross beam in a guiding mode, the chuck is located on the connecting arm, and the measuring probe rod is connected with the cross beam.
And a connecting arm locking structure used for fixing the cross beam and the connecting arm is arranged between the cross beam and the connecting arm. The structure can ensure that the chuck and the position of the contact finger seat clamping and fixing the rear cross beam, the connecting arm and the chuck keep relatively fixed, not only realizes the fixation between the clamping force measuring device and the contact finger seat, but also ensures that the axial direction of the probe at the lower end of the measuring probe is parallel to the cross beam or forms any included angle with the cross beam after the position of the cross beam is fixed, and the phenomenon that the measuring probe drives the cross beam to move after being stressed can not occur.
The connecting arm locking structure is a connecting arm jackscrew arranged on the connecting arm.
The measuring probe rod is assembled on the cross beam along the length direction of the cross beam in a guiding mode and fixed through the probe rod locking structure. The probe can move when the probe is not contacted with the contact finger in the measuring process by moving the measuring probe rod along the cross beam, so that the measuring device is more convenient to adjust.
The probe rod locking structure is a probe rod jackscrew arranged on the measuring probe rod.
The device frame further comprises a pull rod which is arranged on the connecting arm in a penetrating mode and used for tensioning the connecting arm so as to enable the chuck to be tightly held with the contact finger seat, and the reliability of the fixing structure of the measuring device is further improved due to the arrangement of the pull rod.
The matching surface of the clamping head and the contact finger seat is an arc surface. The arrangement of the arc-shaped surface can ensure that the chuck is matched with the contact finger seat more firmly.
The pressure measuring device is a pressure sensor, the pressure sensor is assembled on the measuring probe rod through a connecting block in a guiding mode and can move along the radial direction of the contact finger seat relative to the measuring probe rod, an adjusting bolt is spirally assembled on the measuring probe rod, the front end of the adjusting bolt is in jacking fit with the connecting block, and the connecting block and the pressure sensor are pushed to move through rotating the adjusting bolt.
The measuring probe rod is provided with a probe head, a probe head is arranged on the probe head, a connecting block is arranged on the probe head, a probe head is arranged on the probe head, a connecting block is arranged on the connecting block, a probe head is arranged on the connecting block, a guide groove is arranged on the two outer side faces of the measuring probe rod, which are parallel to the moving direction of the probe head, a clamping arm matched with the guide groove is arranged on the connecting block, and the connecting block is movably assembled on the measuring probe rod through the matching of the clamping arm and the guiding groove.
Drawings
FIG. 1 is a cross-sectional view of a finger grip force measuring device in use according to embodiment 1 of the present invention;
FIG. 2 is a perspective view of the finger grip force measuring device of embodiment 1 of the present invention in use;
FIG. 3 is a top view of a finger grip force measuring device in use according to embodiment 7 of the present invention;
in the figure: 1. a cross beam; 2. a connecting arm; 3. a chuck; 31. an arc-shaped surface; 4. measuring the probe rod; 41. a guide groove; 5. connecting blocks; 51. a clamp arm; 6. a pressure sensor; 7. briquetting; 8. adjusting the bolt; 9. a pull rod; 91. locking the nut; 101. connecting arm jackscrew; 102. jacking a probe rod; 11. a finger touching base; 12. a contact finger; 71. mounting a plate; 72. opening a hole; 73. a chute; 74. a chuck; 75. a support; 76. locking the bolt; 77. a probe.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1 to 2, a specific embodiment 1 of the finger clamping force measuring device of the present invention includes a device frame, the device frame includes a cross beam 1 and two connecting arms 2 installed on the cross beam 1 in a guiding manner, and the cross beam 1 and the two connecting arms 2 form a door-shaped bracket. The upper ends of the two connecting arms 2 are provided with through holes, the cross beam 1 penetrates through the through holes of the two connecting arms 2 and is in clearance fit with the through holes, so that the two connecting arms 2 can slide on the cross beam 1, and the upper ends of the two connecting arms 2 are further provided with connecting arm jackscrews 101 for realizing the relative fixation of the connecting arms 2 and the cross beam 1 after the position of the connecting arms 2 is adjusted. The lower ends of the two connecting arms 2 are connected with a chuck 3 through a connecting screw, and the inner side of the chuck 3 is provided with an inward-concave arc-shaped surface 31 which is matched with the arc-shaped outer wall surface of the contact finger seat 11.
Still be provided with the measuring probe rod 4 that extending direction is parallel with the axis of touching the finger seat on the crossbeam 1, measuring probe rod 4 is located between two linking arms 2, and measuring probe rod 4's upper end is provided with the perforation that supplies crossbeam 1 to pass, and crossbeam 1 makes measuring probe rod 4 can slide along crossbeam 1's length direction with this perforation clearance fit, and measuring probe rod 4's upper end is provided with and is used for realizing measuring probe rod 4 and crossbeam 1 relatively fixed's probe rod jackscrew 102 after measuring probe rod 4 position adjustment. The lower end of the measuring probe rod 4 is connected with a probe for measuring the clamping force of the contact finger 12.
The probe includes a pressure sensor 6, the pressure sensor 6 having terminals for connection to an external display instrument. One side of the pressure sensor 6, which is far away from the measuring probe rod 4, is provided with a pressing block 7 which is used for being in contact with the contact finger 12, a connecting block 5 is arranged between one side of the pressure sensor 6, which is close to the measuring probe rod 4, and the pressure sensor 6 is fixedly connected with the pressing block 7 and the connecting block 5 through a stud. Two lateral surfaces parallel to the probe moving direction of the lower end of the measuring probe rod 4 are provided with guide grooves 41 along the probe moving direction, one side of the connecting block 5, which is close to the measuring probe rod 4, is provided with a clamping arm 51 matched with the guide grooves 41, the connecting block 5 is clamped at the lower end of the measuring probe rod 4 through the clamping arm 51 and can move along the guide grooves 41 in the direction perpendicular to the measuring probe rod 4, and therefore the whole probe can move in the direction close to and away from the measuring probe rod 4. The lower end of the measuring probe rod 4 is further provided with an adjusting bolt 8 in a threaded penetrating mode, the axis of the adjusting bolt 8 is parallel to the moving direction of the probe, the front section of the adjusting bolt 8 penetrates through the measuring probe rod 4 to be in jacking contact with the connecting block 5, and the adjusting bolt 8 is rotated to enable the adjusting bolt to move along the axis direction, so that the probe is pushed to move.
In addition, touch and indicate clamp force measuring device still including wearing the pull rod 9 of adorning on two linking arms 2 and connecting rod, the equal threaded connection in both ends that pull rod 9 is located two linking arms 2 outsides has lock nut 91, realizes the pretension between two linking arms 2 through adjusting lock nut 91, makes two linking arms 2 and touch the clamp connection between the finger seat 11 more reliable.
In the actual use process of the device for measuring the clamping force of the contact finger, after the contact finger 12 to be measured is installed in the contact finger seat 11, the two connecting arms 2 are clamped on the two sides of the contact finger seat 11 by adjusting the distance between the two connecting arms 2, the two chucks are matched with the outer side surface of the contact finger seat to realize the clamping and fixing of the measuring device and the contact finger seat, and then the connecting arm jackscrew 101 is screwed down to relatively fix the positions of the connecting arms 2 and the cross beam 1. And then the locking nut 91 is adjusted to further tighten the two connecting arms 2, so that the device for measuring the clamping force of the contact finger 12 can be reliably fixed on the contact finger seat 11. And adjusting the measuring probe rod 4 to enable the pressing block 7 at the lower end of the measuring probe rod 4 to be in contact with the contact finger 12, and screwing down the probe rod jackscrew 102 to enable the measuring probe rod 4 and the beam 1 to be relatively fixed. The adjusting bolt 8 is rotated, the adjusting bolt 8 pushes the probe to move for a set distance, and then the probe stops moving, and the pressure measured by the pressure sensor 6 is the clamping force of the contact finger 12.
According to the device for measuring the clamping force of the contact finger, the two chucks are matched with the outer side face of the contact finger seat to realize the clamping and fixing of the measuring device and the contact finger seat, so that the two connecting arms and the chucks are positioned outside the contact finger base when in use, the connecting arms and the chucks do not occupy space in the contact finger base, the measuring device can measure the clamping force of the contact finger with a smaller aperture, and the subsequent adjustment of the position of the probe is facilitated.
Claims (6)
1. The utility model provides a touch finger clamp force measuring device which characterized in that: the device comprises a device frame, wherein two chucks for clamping a contact finger seat are arranged on the device frame, a measuring probe rod is also arranged on the device frame, one end of the measuring probe rod is provided with a probe which is used for extending into the contact finger seat along with the measuring probe rod so as to apply pressure to a contact finger to be measured along the radial direction of the contact finger seat, and the probe comprises a pressure measuring device; the device frame comprises a cross beam and two connecting arms which are installed on the cross beam in a guiding mode, the cross beam and the two connecting arms form a door-shaped support, the chuck is located on the connecting arms, and the measuring probe rod is connected with the cross beam; a connecting arm locking structure used for fixing the cross beam and the connecting arm is arranged between the cross beam and the connecting arm, the measuring probe rod is assembled on the cross beam in a guiding mode along the length direction of the cross beam and fixed through the probe rod locking structure, and the measuring probe rod is located between the two connecting arms; the pressure measuring device is a pressure sensor, the pressure sensor is guided and assembled on the measuring probe rod through a connecting block and can move along the radial direction of the contact finger seat relative to the measuring probe rod, an adjusting bolt is spirally assembled on the measuring probe rod, the front end of the adjusting bolt is in top pressure fit with the connecting block and pushes the connecting block and the pressure sensor to move through rotating the adjusting bolt, the axis of the adjusting bolt is parallel to the moving direction of the probe, and the moving direction of the probe is consistent with the moving direction of the two connecting arms on the cross beam; when the measuring device is used, the distance between the two connecting arms is adjusted, the two chucks are matched with the outer side surface of the contact finger seat to realize that the measuring device is clamped and fixed with the contact finger seat, the measuring probe rod is adjusted to enable the pressing block positioned at the lower end of the measuring probe rod to be in contact with the contact finger, the adjusting bolt is rotated, and after the adjusting bolt pushes the probe to move for a set distance, the pressure measured by the pressure sensor is the clamping force of the contact finger.
2. The finger grip force measuring device of claim 1, wherein: the connecting arm locking structure is a connecting arm jackscrew arranged on the connecting arm.
3. The finger grip force measuring device of claim 1, wherein: the probe rod locking structure is a probe rod jackscrew arranged on the measuring probe rod.
4. The finger grip force measuring device of claim 1, wherein: the device frame also comprises a pull rod which is arranged on the connecting arm in a penetrating way and used for tensioning the connecting arm so as to enable the chuck to be tightly held with the contact finger seat.
5. The finger clamping force measuring device of any one of claims 1-4, wherein the mating surface of the clamping head clamped with the finger base is an arc surface.
6. The finger grip force measuring device according to any one of claims 1 to 4, wherein: the measuring probe rod is provided with a probe head, a probe head is arranged on the probe head, a connecting block is arranged on the probe head, a probe head is arranged on the probe head, a connecting block is arranged on the connecting block, a probe head is arranged on the connecting block, a guide groove is arranged on the two outer side faces of the measuring probe rod, which are parallel to the moving direction of the probe head, a clamping arm matched with the guide groove is arranged on the connecting block, and the connecting block is movably assembled on the measuring probe rod through the matching of the clamping arm and the guiding groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710646605.1A CN109323787B (en) | 2017-08-01 | 2017-08-01 | Contact finger clamping force measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710646605.1A CN109323787B (en) | 2017-08-01 | 2017-08-01 | Contact finger clamping force measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109323787A CN109323787A (en) | 2019-02-12 |
| CN109323787B true CN109323787B (en) | 2021-08-06 |
Family
ID=65245785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710646605.1A Active CN109323787B (en) | 2017-08-01 | 2017-08-01 | Contact finger clamping force measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109323787B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110849599B (en) * | 2019-10-11 | 2021-10-01 | 平高集团有限公司 | Contact finger pressing force test and inspection device |
| CN111693008B (en) * | 2020-05-14 | 2022-04-15 | 国网河北省电力有限公司邢台供电分公司 | Pressure detector for plum blossom contact |
| 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 |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2773396A1 (en) * | 1998-01-06 | 1999-07-09 | Gec Alsthom T & D Sa | Test tool for measuring the pressure exerted by individual spring contacts arranged within the cylindrical pole of a high voltage circuit breaker |
| CN101206147A (en) * | 2007-12-13 | 2008-06-25 | 上海电力变压器修试厂有限公司 | Pressure measurement device for portable V type loaded switch movable contact |
| CN201138256Y (en) * | 2007-12-13 | 2008-10-22 | 上海电力变压器修试厂有限公司 | Pressure measurement apparatus for moving contact of portable V typed loaded switch |
| CN102865950A (en) * | 2012-09-20 | 2013-01-09 | 保定供电公司 | Contact finger pressure test instrument of high-voltage isolation switch |
| CN104198929A (en) * | 2014-07-14 | 2014-12-10 | 国网上海市电力公司 | Detection device and detection method for outdoor high voltage isolator |
| CN106289617A (en) * | 2016-10-27 | 2017-01-04 | 湖南长高高压开关有限公司 | Flos Mume fingertip type disconnecting switch clamping force measurement apparatus |
| CN106441688A (en) * | 2016-10-27 | 2017-02-22 | 湖南长高高压开关有限公司 | Adjustable isolating switch clamping force measuring device |
| CN106679866A (en) * | 2016-11-25 | 2017-05-17 | 云南电网有限责任公司电力科学研究院 | Power disconnector contact finger clamping force detection method and system |
-
2017
- 2017-08-01 CN CN201710646605.1A patent/CN109323787B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2773396A1 (en) * | 1998-01-06 | 1999-07-09 | Gec Alsthom T & D Sa | Test tool for measuring the pressure exerted by individual spring contacts arranged within the cylindrical pole of a high voltage circuit breaker |
| CN101206147A (en) * | 2007-12-13 | 2008-06-25 | 上海电力变压器修试厂有限公司 | Pressure measurement device for portable V type loaded switch movable contact |
| CN201138256Y (en) * | 2007-12-13 | 2008-10-22 | 上海电力变压器修试厂有限公司 | Pressure measurement apparatus for moving contact of portable V typed loaded switch |
| CN102865950A (en) * | 2012-09-20 | 2013-01-09 | 保定供电公司 | Contact finger pressure test instrument of high-voltage isolation switch |
| CN104198929A (en) * | 2014-07-14 | 2014-12-10 | 国网上海市电力公司 | Detection device and detection method for outdoor high voltage isolator |
| CN106289617A (en) * | 2016-10-27 | 2017-01-04 | 湖南长高高压开关有限公司 | Flos Mume fingertip type disconnecting switch clamping force measurement apparatus |
| CN106441688A (en) * | 2016-10-27 | 2017-02-22 | 湖南长高高压开关有限公司 | Adjustable isolating switch clamping force measuring device |
| CN106679866A (en) * | 2016-11-25 | 2017-05-17 | 云南电网有限责任公司电力科学研究院 | Power disconnector contact finger clamping force detection method and system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109323787A (en) | 2019-02-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109323787B (en) | Contact finger clamping force measuring device | |
| US8727330B2 (en) | Grounding component for electric welding systems and methods | |
| CN109129262B (en) | Clamping mechanism capable of automatically positive pressure and adjusting pressure | |
| WO2016194863A1 (en) | Attachment/detachment device for clamp arm of clamping device | |
| JP2013540357A (en) | A device that removably tightens a current conductor to a current transformer housing | |
| CN214173992U (en) | Shear test fixture | |
| CN103022747B (en) | Combination clamp for flat connection terminals and cables | |
| KR101629572B1 (en) | connecting structure of clamp and insulator | |
| CN201118146Y (en) | Clamp type hot-line work fixture | |
| KR100955292B1 (en) | A bonding clamp for the electromagnetic induction of the cable | |
| CN102590742A (en) | Loop resistance measuring pliers for trolley type switch | |
| CN114624104A (en) | T-shaped support drawing clamp device and using method | |
| CN212808383U (en) | Bridge clamp | |
| CN219830565U (en) | A quick test fixture for trachea quick-connect fitting | |
| CN110416771B (en) | Flexible connection structure capable of adjusting stroke | |
| CN113038679A (en) | Elastic multi-wire probe target head for measuring beam profile of accelerator | |
| CN111891383A (en) | Auxiliary measuring tool and measuring method for displacement of piston rod of helicopter hydraulic steering engine | |
| JP2011179866A (en) | Adapter for measurement | |
| CN202383202U (en) | Jaw-adjustable direct-current resistance test plier | |
| CN213729858U (en) | Welding support | |
| RU90269U1 (en) | SCREW CLAMP (OPTIONS) | |
| RU208652U1 (en) | POWER CLAMP CONNECTION | |
| CN217345116U (en) | Rapid fixture for small device | |
| CN214368646U (en) | Measuring device support rod with crab claw pincers | |
| JP6320825B2 (en) | Connector gripper for high voltage underline connection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |