CN201945683U - Crimping type connection terminal for energy meter detection device - Google Patents
Crimping type connection terminal for energy meter detection device Download PDFInfo
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- CN201945683U CN201945683U CN2011200314655U CN201120031465U CN201945683U CN 201945683 U CN201945683 U CN 201945683U CN 2011200314655 U CN2011200314655 U CN 2011200314655U CN 201120031465 U CN201120031465 U CN 201120031465U CN 201945683 U CN201945683 U CN 201945683U
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- energy meter
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- electric energy
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Abstract
The utility model discloses a crimping type connection terminal for an energy meter detection device, which comprises a connection rod, a spring, an elastic pin and a moveable connection sleeve, wherein an annular protruding block is arranged in the middle of the body of the connection rod; the moveable connection sleeve is a hollow column and the upper section of the body of the connection rod is located inside the moveable connection sleeve; the top end of the connection rod is in a conical head shape; the inner wall of the upper end of the moveable connection sleeve is a conical pore wall which is matched with the conical head shape of the connection rod; a horizontal pin hole is arranged in the connection rod; a pin groove is arranged on the moveable connection sleeve; the elastic pin is arranged inside the pin hole and the pin groove and is connected with the connection rod and the moveable connection sleeve; the spring is sheathed on the connection rod; and two ends of the spring lean against the protruding block of the connection rod and the bottom end of the moveable connection sleeve respectively. The connection terminal has the advantages of large transmission current, low power consumption and reliable linkage.
Description
Technical field
The utility model relates to a kind of electric energy meter calibrating apparatus, is specifically related to a kind of compression joint type that is used for electric energy meter calibrating apparatus and connects the table terminal.
Background technology
In the electric energy meter calibration field, in the check of installing type electric energy meter, the wiring of pocket watch after-current is the work of burdensome always, and along with the epi-position of verifying attachment is more and more, this problem is outstanding further.
The wiring of voltage is fairly simple usually, the general employing of voltage tester line one end is that the plunger other end is the form of wire clamp, during test plunger is inserted in the jack of voltage output end of verifying attachment, the other end is clipped in electric energy meter and opens in advance on the voltage terminal screw cap of butt hook.Now, still wiring like this of three-phase verifying attachment.Along with quick meter connecting shelf has been adopted in the wiring of verifying attachment electric current, after particularly single-phase many winding voltages of secondary isolation transformer technology maturation, the single-phase electric energy meter verifying attachment in inside with the voltage output end of each epi-position and electric current is high-end is fixed together, the voltage butt hook can not be taken off in the check of single-phase electric energy meter, has also saved voltage wiring process.Therefore, present single-phase electric energy meter has not all had the voltage butt hook.
And the wiring of electric current is more loaded down with trivial details, early stage device adopts " the table mode that connects of external cabling ", seriatim each tested electric energy meter is connected in series with many testing current lines, testing current line two ends all are plungers, plunger inserted the perforate of electric energy meter electric current terminal and tighten line pressing bolt on the terminal, as shown in Figure 1.The multi-epitope verifying attachment of producing is in order to reduce testing person's labour intensity now, generally all use " meter connecting shelf connects the table mode fast ", as shown in Figure 2, the elasticity electric current that device electric current output line has been fixed in quick meter connecting shelf connects on the table rod, save the aerial lug process, but still need tighten the line pressing bolt on the electric energy meter electric current terminal.This is because the actual electric energy meter that uses is of a great variety, the terminal hole diameter differs, if do not tighten line pressing bolt, electric current can occurring, to connect table rod bad with electric energy meter electric current termination contact, contact resistance is excessive, the power that consumes on the terminal contact is too many, causes the electric current output liter of verifying attachment completely to measure limit value less than 100%, because the peak power that device electric current power amplifier can be exported is certain.More seriously when big electric current output, electric current connects watch rod and energy meter terminal can very fast heating, influences the accuracy of measurement, even the quick meter connecting shelf of scorification, testing current line and tested electric energy meter.And the frequent table rod that connects of changing different-diameter satisfies different terminal holes in the check, and is both uneconomical also unrealistic.Compare with " the table mode that connects of external cabling ", " meter connecting shelf connects the table mode fast " of generally adopting now increased the power consumption of device (because the testing current line is connected with the table rod employing screw that connects on the meter connecting shelf fast, one-in-and-one-out is equivalent to increase by two contact points), so power consumption is also greater than the mode of external impressed current p-wire, but pocket watch and wiring have been made things convenient for.
When the epi-position of installing was a lot, the process of tightening line pressing bolt on the electric energy meter by hand was also very heavy, in order further to reduce labor intensity, increases work efficiency, and electric energy meter metrological service generally all adopts electric screw to criticize.At above-mentioned situation, the line pressing bolt that the electric current mode of connection of application compression joint type can be tightened energy meter terminal again, and at first on outlet device, successfully use.According to the difformity of the perforate of electric energy meter electric current terminal, compression joint type also has " chamfering crimping mode " and " screw crimping mode " two kinds, as shown in Figure 3 and Figure 4.
As shown in Figure 3, " chamfering crimping mode " requires the end face of perforate of the current terminal 103 of electric energy meter that the above chamfering of 1～2mm is arranged, and connects excellent 101 slightly larger in diameter of table in terminal hole, and connecing the excellent termination of table also is the chamfering of same slope.After depressing electric energy meter, elasticity connects the table rod and upsprings, and withstands the perforate of current terminal, leans on the surface of contact of chamfering to come transmission current.Test shows that this " chamfering crimping mode " contact is comparatively reliable, and it is also lighter to generate heat.But, just can not adopt this " chamfering crimping mode " if the perforate end of electric energy meter electric current terminal does not have chamfering or chamfering is too little.
As shown in Figure 4, " screw crimping mode " connect excellent 101 terminations of table be have with electric energy meter electric current terminal 103 in the arcwall face of line pressing bolt 102 identical (or approximate) screw thread, a similar half-nut, after depressing electric energy meter, elasticity connects the table rod and upsprings, withstand line pressing bolt, lean on the multiple spot of screw thread curved surface to contact transmission current.Obviously, the excellent opening diameter with respect to current terminal of table is thin partially, the pressure table is crooked or the line pressing bolt of electric energy meter electric current terminal is not and connect the brass screw of showing excellent same material, just the loose contact phenomenon may occur, influences current delivery if connect.Even if the copper line pressing bolt that material is identical, this " screw crimping mode " also may damage the screw thread of line pressing bolt.
At present, the opening diameter disunity of the current terminal of the various installing type electric energy meters of domestic production, chamfering is very little and accurate inadequately with the concentricity of shell perforate, therefore, " chamfering crimping mode " as shown in Figure 3 do not used on calibrating installation, and already used is as shown in Figure 4 " screw crimping mode ".
Connect in the table process in that calibrating installation is actual, " screw crimping mode " shown in Figure 4 also exists and connects insecure problem, and therefore domestic electric energy meter calibrating apparatus generally uses as yet.For example, the operator adjusts position when pocket watch that improper what cause that electric current connects that the table rod is crooked, the line pressing bolt of electric energy meter is used is common galvanized steel screw rather than brass screw, all can produce loose contact causes heating, elasticity connect table rod because of overheated cause the plastic slide block that fixedly connects the table rod to be out of shape to block spring follow the string, appearance can not hold out against unfavorable connection situations such as line pressing bolt.Connect in the watch test at electric energy meter, after arbitrarily connecing table, promptly connect table position and do not do careful adjustment, test current generates heat when 20A is following and still can.When applying the 100A test current, only finish the error testing of a POL, the most serious excellent already oxidised variable color of table that connects of generating heat, plastic slide block gross distortion and must changing.
External certain model electric energy meter is being carried out the connecing in the watch test test of " screw crimping mode ", comparatively ideal connect under the table status (be copper line pressing bolt, identical screw thread, connect the excellent diameter of table suitably, connect table position and carefully adjust), measuring current is 100A, the power consumption of the a-a point test on electric energy meter electric current terminal is about 10 watts, and is about 30 watts in the power consumption that connects b-b point test on the table rod.This shows that the power consumption on each line pressing bolt crimping contact excellent with connecing table is 10 watts, the total power consumption of two screw crimping contacts is twices of electric energy meter current coil power consumption.
In sum, " screw crimping mode " compared with other traditional wired mode of tightening the electric energy meter line pressing bolt, concerning device manufacturing side, " screw crimping mode " requires the current power amplifier of verifying attachment that bigger power output capacity is arranged, more complicated accurate meter connecting shelf is fast shown excellent process technology, the corresponding manufacturing cost that increases verifying attachment with connecing.Concerning the device user, " screw crimping mode " alleviated the labour intensity that connects table, but increased the uncertainty of connection box of electric energy meter, improved failure rate.Because the Connection Element and the method that adopt are limit, these connect desirable not enough, when the big electric current of device output, will consume bigger power on the contact, can make heating of contact, can burn the contact even cause fire when serious, influence safety in utilization.
The utility model content
The purpose of this utility model is to provide a kind of compression joint type that is used for electric energy meter calibrating apparatus to connect the table terminal, and this connects the table terminal, and to have a transmission current big, and power consumption is little, connects reliable characteristics.
The purpose of this utility model can realize by following technical measures:
A kind of compression joint type that is used for electric energy meter calibrating apparatus connects the table terminal, comprises that connecing table rod, spring, Elastip pin and activity connects the table sleeve; The described shaft middle part that connects the table rod is provided with the outer projection of ring-type; Described activity connects the table sleeve and is the hollow cylinder column, and the described epimere shaft that connects the table rod is arranged in described activity and connects the table sleeve, the described tapered head in top that connects the table rod, the inwall of upper end that described activity connects the table sleeve is the taper hole wall, and described taper hole wall is with described to connect the excellent conical head shape of table suitable; The described table that connects offers horizontal pin hole on the rod, and described activity connects the table sleeve and is provided with cotter slot, and described Elastip pin is installed in described pin hole and the cotter slot and is connected and describedly connects the table rod and activity connects the table sleeve; Described spring housing is loaded on described connecing on the excellent shaft of table, and the two ends of described spring prop up the described outer projection of table rod and the bottom that described activity connects the table sleeve of connecing respectively.
The described lower end outer wall that connects the table rod is provided with the screw thread of the current terminal copper shoe that is used for external calibrating installation meter connecting shelf.
The described outer projection that connects the excellent stage casing of table is square or hexagon.
The top that described activity connects the table sleeve is the arcwall face of indent, and the cylindrical rods figure shape of the line pressing bolt of the arcwall face of described indent and external current terminal inside is suitable.
The barrel that described activity connects the table sleeve is provided with straight down axially grooved, and described axially grooved opening part is positioned at the middle part that described activity connects the arcwall face on table sleeve top; Described axially grooved be the symmetry two.
It is suitable that described activity connects the internal diameter of perforate of the outer diameter of table sleeve and external current terminal.
The upper end outer wall that described activity connects the table sleeve is provided with up-small and down-big ring-shaped step, and described step is chamfering shape and suitable with the chamfering of the perforate of external current terminal.
Described spring is a stage clip, and the interior diameter of described spring is greater than the described overall diameter that connects table rod, and the overall diameter of described spring connects the overall diameter of table sleeve less than described activity.
Described Elastip pin is the hollow cylinder column, and offers the axially open of up/down perforation on the barrel; When described Elastip pin is squeezed power, wide dwindling between described axially open, the external diameter when described Elastip pin is state of nature is greater than the described internal diameter that connects the pin hole of table rod.
The length of described Elastip pin connects the external diameter of table sleeve less than activity.
The compression joint type that is used for electric energy meter calibrating apparatus of the present utility model connects table terminal contrast prior art, and following advantage is arranged:
This connects the table terminal and compares with " the screw crimping mode " of prior art, has efficient, reliable, energy-saving advantages, and employing activity simultaneously connects the mode pickup current terminal of the compression joint type of the chamfering on the table sleeve, can alleviate calibration personnel's labour intensity greatly.And only need the change activity connect the outside dimension that connects the table termination of showing sleeve, just not only can be used for the crimping intelligent electric energy meter, the detection that also can be applied to other electric energy meters easily connects, therefore has practical promotional value, make various electric energy meter calibrating apparatus generally use the table mode that connects of crimping to become possibility, have important and tangible economic benefit and social benefit.
Description of drawings
Fig. 1 is the synoptic diagram that external cabling of the prior art connects the table mode;
Fig. 2 is the synoptic diagram that quick meter connecting shelf of the prior art connects the table mode;
Fig. 3 is the synoptic diagram of chamfering crimping mode of the prior art;
Fig. 4 is the synoptic diagram of screw crimping mode of the prior art;
Fig. 5 is the cut-open view that the compression joint type that is used for electric energy meter calibrating apparatus of the present utility model connects the table terminal;
Fig. 6 is the A-A cut-open view that connects the table terminal shown in Figure 5;
Fig. 7 is the side view that connects the table rod that connects the table terminal shown in Figure 5;
Fig. 8 is the cut-open view that the activity that connects the table terminal shown in Figure 5 connects the table sleeve;
Fig. 9 is the B-B cut-open view that activity shown in Figure 8 connects the table sleeve;
Figure 10 is the synoptic diagram that connects the spring of showing terminal shown in Figure 5;
Figure 11 is the side view that connects the Elastip pin of showing terminal shown in Figure 5;
Figure 12 is the vertical view of Elastip pin shown in Figure 11.
Embodiment
Fig. 5 to Figure 12 shows the one-piece construction that the compression joint type that is used for electric energy meter calibrating apparatus of the present utility model connects the table terminal, this connects the table terminal and comprises that connecing table rod 1, spring 3, Elastip pin 4 and activity connects table sleeve 2, the lower end that connects table rod 1 is connected with the current terminal copper shoe of quick meter connecting shelf, particularly, in the present embodiment, this lower end outer wall that connects table rod 1 is provided with screw thread 1a, and screw thread 1a is a standard M5 screw thread, on the current terminal slide block that is connected quick meter connecting shelf.
The shaft middle part that connects table rod 1 is provided with the outer projection 1b of ring-type; Outer projection is square or hexagon, adopts hexagon in the present embodiment, is standard M5 nut outside dimension, is tightened in order to use spanner.The top that connects table rod 1 is conical head 1c.
Activity connects table sleeve 2 and is the hollow cylinder column, and the below that the epimere shaft that connects table rod 1 connects table sleeve 2 by activity is stretched into activity and is connect in the table sleeve 2, the inwall that activity connects the upper end of table sleeve 2 is taper hole wall 2c, thereby it is measure-alike, thereby adaptive mutually with the tapering of the top conical head 1c that connects table rod 1; Connect table rod 1 and be provided with horizontal pin hole 1d, activity connects table sleeve 2 and is provided with horizontal cotter slot 2d, 4 of Elastip pins are installed among pin hole 1d and the cotter slot 2d and are connected this and connect table rod 1 and activity connects table sleeve 2, thus fixedly activity connect table sleeve 2 make it can about telescopic movable and can not coming off; , the groove width of cotter slot 2d is a bit larger tham the external diameter of Elastip pin 4.After compression joint type connect table terminal assembling, because the position-limiting action of pin and cotter slot, activity connect table sleeve 2 and is enclosed within and connects on the table rod 1 up and down telescopic movable and can not rotate.
3 on spring is set on the shaft that connects table rod 1, and the two ends of spring 3 prop up outer projection 1b and the movable bottom that connects table sleeve 2 that connects table rod 1 respectively.
The top that this activity connects table sleeve 2 is the arcwall face 2a of indent, and the column shaft of the line pressing bolt in arcwall face 2a and the current terminal is suitable.
The epimere barrel that activity connects table sleeve 2 is provided with downward axially grooved 2b, and the opening part of axially grooved 2b is positioned at the middle part that activity meets the arcwall face 2a on table sleeve 2 tops; Axially grooved 2b is two of symmetry, and the structure of arcwall face 2a and axially grooved 2b is in order to avoid the electric energy meter line pressing bolt when the crimping electric energy meter.
It is suitable that activity connects the internal diameter of perforate of table upper end outer diameter of sleeve 2 and current terminal.
The upper end outer wall that activity connects table sleeve 2 is provided with up-small and down-big ring-shaped step, and step is chamfering shape and suitable with the chamfering of the tapping of current terminal.This stepped portions then become this activity connect table sleeve and current terminal between the electric current surface of contact.The structure that this activity connects the table sleeve makes it to strut internally, and activity connects the external diameter of table sleeve and the chamfering at step place becomes the contacted conducting surface of current terminal.
As shown in figure 10, spring 3 is a stage clip, and it is big slightly that its internal diameter size ratio connects the excellent 1 upper end outside dimension of table, connects on the table rod 1 in order to be enclosed within; Its outside dimension is slightly littler than the external diameter that activity connects table sleeve 2, makes it elastic telescopic but connect the excellent quill 2 of table in order to jack-up.
Shown in Figure 11,12, Elastip pin 4 is the hollow cylinder column, and offers the axially open 4a of up/down perforation on the barrel.When Elastip pin 4 is squeezed power, wide dwindling between axially open 4a, the external diameter when Elastip pin 4 is state of nature is slightly larger than the internal diameter of the pin hole 1d that connects table rod 1, does not radially flick after the insertion and can come off; And the length of this Elastip pin 4 connects the external diameter of table sleeve 2 less than activity, and the activity of being stuck in connects in the cotter slot 2d of table sleeve 2 after the installation, makes activity connect table sleeve 2 and is enclosed within and connects telescopic action on the table rod 1 but can not come off.
Embodiment of the present utility model is not limited thereto; under the above-mentioned basic fundamental thought of the utility model prerequisite;, all drop within the utility model rights protection scope modification, replacement or the change of the utility model other various ways that content is made according to the ordinary skill knowledge of this area and customary means.
Claims (10)
1. a compression joint type that is used for electric energy meter calibrating apparatus connects the table terminal, comprises connecing the table rod, it is characterized in that: comprise that also spring, Elastip pin and activity connect the table sleeve; The described shaft middle part that connects the table rod is provided with the outer projection of ring-type; Described activity connects the table sleeve and is the hollow cylinder column, and the described epimere shaft that connects the table rod is arranged in described activity and connects the table sleeve, the described tapered head in top that connects the table rod, the inwall of upper end that described activity connects the table sleeve is the taper hole wall, and described taper hole wall is with described to connect the excellent conical head shape of table suitable; The described table that connects offers horizontal pin hole on the rod, and described activity connects the table sleeve and is provided with cotter slot, and described Elastip pin is installed in described pin hole and the cotter slot and is connected and describedly connects the table rod and activity connects the table sleeve; Described spring housing is loaded on described connecing on the excellent shaft of table, and the two ends of described spring prop up the described outer projection of table rod and the bottom that described activity connects the table sleeve of connecing respectively.
2. the compression joint type that is used for electric energy meter calibrating apparatus according to claim 1 connects the table terminal, it is characterized in that: the described lower end outer wall that connects the table rod is provided with the screw thread of the current terminal copper shoe that is used for external calibrating installation meter connecting shelf.
3. the compression joint type that is used for electric energy meter calibrating apparatus according to claim 1 connects the table terminal, it is characterized in that: the described outer projection that connects the excellent stage casing of table is square or hexagon.
4. the compression joint type that is used for electric energy meter calibrating apparatus according to claim 1 connects the table terminal, it is characterized in that: the top that described activity connects the table sleeve is the arcwall face of indent, and the cylindrical rods figure shape of the line pressing bolt of the arcwall face of described indent and external current terminal inside is suitable.
5. the compression joint type that is used for electric energy meter calibrating apparatus according to claim 4 connects the table terminal, it is characterized in that: the barrel that described activity connects the table sleeve is provided with straight down axially grooved, and described axially grooved opening part is positioned at the middle part that described activity connects the arcwall face on table sleeve top; Described axially grooved be the symmetry two.
6. the compression joint type that is used for electric energy meter calibrating apparatus according to claim 5 connects the table terminal, it is characterized in that: it is suitable that described activity connects the internal diameter of perforate of the outer diameter of table sleeve and external current terminal.
7. the compression joint type that is used for electric energy meter calibrating apparatus according to claim 6 connects the table terminal, it is characterized in that: the upper end outer wall that described activity connects the table sleeve is provided with up-small and down-big ring-shaped step, and described step is chamfering shape and suitable with the chamfering of the perforate of external current terminal.
8. connect the table terminal according to any described compression joint type that is used for electric energy meter calibrating apparatus in the claim 1 to 7, it is characterized in that: described spring is a stage clip, and the interior diameter of described spring is greater than the described overall diameter that connects the table rod, and the overall diameter of described spring connects the overall diameter of table sleeve less than described activity.
9. connect the table terminal according to any described compression joint type that is used for electric energy meter calibrating apparatus of claim 1 to 7, it is characterized in that: described Elastip pin is the hollow cylinder column, and offers the axially open of up/down perforation on the barrel; When described Elastip pin is squeezed power, wide dwindling between described axially open, the external diameter when described Elastip pin is state of nature is greater than the described internal diameter that connects the pin hole of table rod.
10. the compression joint type that is used for electric energy meter calibrating apparatus according to claim 1 connects the table terminal, it is characterized in that: the length of described Elastip pin connects the external diameter of table sleeve less than activity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200314655U CN201945683U (en) | 2011-01-28 | 2011-01-28 | Crimping type connection terminal for energy meter detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200314655U CN201945683U (en) | 2011-01-28 | 2011-01-28 | Crimping type connection terminal for energy meter detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201945683U true CN201945683U (en) | 2011-08-24 |
Family
ID=44473023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200314655U Expired - Fee Related CN201945683U (en) | 2011-01-28 | 2011-01-28 | Crimping type connection terminal for energy meter detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201945683U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102955146A (en) * | 2012-11-20 | 2013-03-06 | 辽宁省电力有限公司电力科学研究院 | Device for measuring metering accuracy of intelligent meter in salt spray test box |
| CN103983826A (en) * | 2014-05-22 | 2014-08-13 | 国家电网公司 | Full-contact wiring rod head for electric energy meter testing meter stand |
| CN108107246A (en) * | 2017-12-21 | 2018-06-01 | 重庆亨优机电设备有限公司 | A kind of ammeter plugging member |
-
2011
- 2011-01-28 CN CN2011200314655U patent/CN201945683U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102955146A (en) * | 2012-11-20 | 2013-03-06 | 辽宁省电力有限公司电力科学研究院 | Device for measuring metering accuracy of intelligent meter in salt spray test box |
| CN103983826A (en) * | 2014-05-22 | 2014-08-13 | 国家电网公司 | Full-contact wiring rod head for electric energy meter testing meter stand |
| CN108107246A (en) * | 2017-12-21 | 2018-06-01 | 重庆亨优机电设备有限公司 | A kind of ammeter plugging member |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110824 Termination date: 20180128 |