CN203037205U - Displacement measuring device used for direct-current solenoid-type electromagnet static characteristic test - Google Patents
Displacement measuring device used for direct-current solenoid-type electromagnet static characteristic test Download PDFInfo
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- CN203037205U CN203037205U CN 201220653393 CN201220653393U CN203037205U CN 203037205 U CN203037205 U CN 203037205U CN 201220653393 CN201220653393 CN 201220653393 CN 201220653393 U CN201220653393 U CN 201220653393U CN 203037205 U CN203037205 U CN 203037205U
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Abstract
The utility model relates to a displacement measuring device used for direct-current solenoid-type electromagnet static characteristic test. The displacement measuring device comprises an installation frame body and a displacement sensing/measuring device arranged on the installation frame body. The installation frame body is composed of a top cover, supporting pillars and a base; the supporting pillars are fixedly arranged on the base; the top cover is fixed on the supporting pillars through screws; the middle portion of the top cover is provided with installation through holes; screws pass through the installation through holes, gaskets and nuts so as to install a direct-current solenoid-type electromagnet below the top cover; the horizontal symmetry axis of the top cover is provided with displacement sensor signal transmission line through holes arranged at the external sides of the installation through holes; and the displacement sensing/measuring device is composed of two displacement sensors, two displacement sensor fixing brackets and one displacement sensing/measuring sheet. According to the displacement measuring device of the utility model, two symmetrical displacement sensors are designed; the travel of an electromagnet armature can be measured through the displacement quantity acquired by the two displacement sensors; and therefore, the critical problems such as short travel of the direct-current solenoid-type electromagnet, and difficulty and low precision in the acquisition of the displacement quantity of the travel of the armature can be solved.
Description
Technical field:
The utility model belongs to the static characteristics test of a kind of electric equipment products (dc solenidal formula electromagnet) and uses device, is specially dc solenidal formula electromagnet static characteristics test deviation meter.
Background technology:
Dc solenidal formula electromagnet is widely used in all kinds of hydraulic systems, is the core of hydraulicdirectional control valve group.In actual applications, electromagnet is the highest element of probability that breaks down, the quality of its static characteristics element that to be directly influence be made of it or the overall performance of device.If electromagnet breaks down, will cause great economic loss.Therefore, development high-performance, highly reliable electromagnet are extremely urgent problems, and measuring technology and the proving installation of research electromagnet static characteristics are very necessary and very urgent.
At present, in electromagnet static characteristics measuring technology and proving installation research, mainly be that electromagnet according to ad hoc structure type, specific use designs, certain limitation is arranged: 1) Wang Guihua aspect versatility, Lu Chen etc. propose a kind of test macro for the test high-speed electro-magnet in " experimental study of diesel engine EFI system high speed electromagnet characteristic ", this system mainly is made up of parts such as electromagnet, preceding push rod, rear push-rod, spring, acceleration bolt and handwheels, system architecture is simple, the function practicality, convenient test; But the dc solenidal formula electromagnet in inapplicable the utility model, at first, utilize handwheel, nut to control the micro-stroke of solenoid electromagnet, can't reach accuracy requirement, the displacement that obtains is not accurate enough: in addition, this system does not gather and the control function automatically, can not generate static characteristic curve automatically.2) the horsepower tinkling of pieces of jade, Wang Junzheng etc. propose a kind of test macro for measurement scale electromagnet static characteristics in " test of electromagnet static and dynamic performance ".This system mainly partly is made up of hydraulic oil source, Proportional Valve-controlled cylinder, proportion electro-magnet mounting bracket, power sensor, hydraulic cylinder displacement transducer, proportion electro-magnet displacement transducer, back-moving spring etc.This system can gather and processing signals automatically, and measuring accuracy is also than higher, but this system only is fit to the specific proportion electro-magnet of testing experiment, and volume is big, complex structure, and operation is difficulty relatively.
At present, electromagnet static characteristics proving installation is primarily aimed at the electromagnet of a certain structure of using under the special environment condition and develops, and coal mining system hydraulicdirectional control valve group is with in the solenoid electromagnet static characteristics test macro, can carry out test product installation, disassembling section fast, steadily, easily, improve test efficiency, when reducing labour intensity, can obtain again and accurately test the little stroke of electromagnet armature and become one of gordian technique.
The utility model content:
The utility model purpose namely is big at electromagnet static characteristics test operation workload in the current techniques, the proving installation complex structure, the defective that measuring accuracy and intelligent level are low, solved the gordian technique of measuring the little stroke of armature during hydraulic buttery valve is tested with dc solenidal formula electromagnet static characteristics reliably, accurately and easily, realized electromagnet is firmly installed, the Fast Installation positioning action function of displacement sensing device, solved its proving installation complex structure, precision is low, the problem of complex operation.
The technical solution of the utility model is:
A kind of dc solenidal formula electromagnet static characteristics test uses deviation meter, this deviation meter to comprise installation frame body and displacement sensing device mounted thereto.
The composition of described installation frame body comprises top cover, pillar and base; Pillar is packed on the base, and top cover is fixed on the pillar by screw; There is the installation through hole at the top cover middle part, and screw via through holes, pad and nut are installed in dc solenidal formula electromagnet the below of top cover; On top cover lateral symmetry axle, the through hole outside is installed, displacement transducer signal transmission line through hole is arranged;
Described displacement sensing device is made up of 2 displacement transducers, 2 sensor fixed supports and 1 displacement sensing sheet; 2 displacement transducers are left lateral position displacement sensor and right lateral position displacement sensor, and 2 displacement sensor structures and function are identical; 2 sensor fixed supports comprise left side fixed support and right side fixed support, the left side fixed support is formed identical with the right side fixing rack structure, the relative electromagnet symmetry in installation site, wherein, in the fixed support of described left side between each parts and and miscellaneous part between position and annexation as follows: 1) on the horizontal direction: the position screw end is sleeved in the displacement transducer sleeve pipe, its threaded barrel portion is passed by the left hole of displacement transducer sleeve pipe, pass the through hole of vertical rod sleeve pipe " U " type openend both sides then, again successively through pad, the position screw grommet, behind another pad, tail end screws in the threaded hole of position knob; When screwing the position knob, the vertical rod casing pipe sleeve is contained in the vertical rod; 2) on the vertical direction, displacement transducer passes the through hole of position screw end and with two through holes of its sensor sleeve vertical direction that is sleeved on, link to each other with the displacement sensing sheet with nut through pad then, the signal transmssion line of displacement transducer is drawn by top cover upper sensor signal transmssion line through hole; 3) vertical rod is right cylinder, and tail end is threaded, is solidly installed with base in the threaded hole of vertical rod pad screw-in base.
Described installation frame body B-C post is right cylinder, and there is threaded hole its inside, top, by screw, packing ring and pad and top cover close installation; The bottom of pillar is threaded right cylinder, and its reach is suitable with base thickness, and the threaded hole by base is packed on the base; The middle part outside surface of pillar has two parallel shallow grooves; The summation of armature travel when the height of pillar is greater than top cover thickness, base thickness, solenoid electromagnet height and solenoid electromagnet work.
Described displacement sensing sheet is thin rigid metal sheet, and both sides band aperture, displacement transducer moving iron core afterbody pass aperture and linked to each other with the displacement sensing sheet with pad by nut, and the middle part of displacement sensing sheet is corresponding with the electromagnet armature position.
The main body of displacement transducer sleeve pipe is the thin wall U-shaped pipe of cylindrical shape in the described displacement sensing device, is sleeved on the outside of position screw end; On the horizontal direction, the displacement transducer cannula tip has through hole, and through hole is adjacent with the vertical rod sleeve pipe, and thin wall U-shaped bore is greater than the diameter of position screw end; The length of displacement transducer cannula tip reduced diameter portion accounts for 1/5 of sensor sleeve total length, and its through-hole aperture is less than the diameter of position screw end, but greater than the cylinder diameter of position screw belt threaded portion; On the vertical direction, the displacement transducer sleeve pipe has 2 coaxial through-holes, its aperture is greater than the aperture of position screw end through hole, the aperture of position screw end through hole is again greater than the external diameter of displacement transducer, displacement transducer is enclosed within the through hole of position screw and displacement transducer sleeve pipe, and its vertical offset angle is not more than 1 °.
Described position screw is end long spiro nail with holes, and the length of screw is than the level interval of displacement transducer and vertical rod, vertical rod diameter, strut diameter and vertical rod and pillar level interval length summation long 1/3.
The opening cylinder that described vertical rod sleeve pipe is perforated cavities, outer shape are " U " shape; The shape approximation of interior bore is " Ω " shape, divides about two parts, and the inboard of vestibule is circular hole, and the outside is the rectangle hole slot.The circular hole of vertical rod inside pipe casing vestibule is coaxial with vertical rod, and its diameter is greater than the diameter of vertical rod; On the tube wall of its rectangle hole slot both sides, outside 2 coaxial horizontal through hole are arranged, the aperture of through hole is identical with the aperture of sensor sleeve left hole, namely greater than the cylinder diameter of position screw belt threaded portion.The vertical rod casing pipe sleeve is in vertical rod, and on the horizontal direction, the right side of vertical rod sleeve pipe links to each other with sensor sleeve, and the left side links to each other with the position screw grommet through pad.
The thickness of top cover 13 is between 1.5 centimetres～2 centimetres in the described installation frame body; The thickness of base 19 is more than or equal to the twice of top cover 13 thickness, and the length of base 19 and width be big by 1/3 than top cover 13 at least all.Top cover 13 and base 19 are cast iron quality and make.
The quantity of described displacement sensing device is one or more, and size is identical or different, and simultaneously, the quantity of electromagnet also is one or more on the installation frame body, and quantity is identical with the quantity of displacement sensing device, and model is identical or different.
The beneficial effects of the utility model are:
1. the utility model can be taken into account the electromagnet of the various models of similar structures if change position and the size that through hole is installed at the top cover middle part, has certain versatility.
2. the utility model is according to the specific (special) requirements of electromagnet test, prevent its vibration and impacted, adopt electromagnet vertical fixing mounting means, and in installation frame body, to the rigidity of top cover and base material and thickness proportion, dimensional accuracy of pillar etc. has been carried out special design, guarantee installation frame body safety and stability in the test process, test data accuracy height.
3. the utility model has designed the displacement transducer of two symmetries, carry out the measurement of electromagnet armature stroke by the displacement of two displacement transducer collections, it is short to have solved dc solenidal electromagnet stroke well, and the displacement of armature travel is gathered difficulty and the not high key issue of precision.
4. in the utility model displacement transducer fixed support, be provided with the position screw, sensor sleeve, vertical rod sleeve pipe, position knob and screw grommet, realize the symmetrical installation site on the vertical and horizontal direction of the function that fast displacement transducer is in place and limit sensor, solved the fixed installation difficult problem of displacement sensing device.Improved the convenience of installation, adjusting and the disassembling section of deviation meter, guaranteed simultaneously in test product installation, adjusting and the unloading process, the consistance of displacement sensing device installation site on the vertical and horizontal direction.
Description of drawings
Fig. 1 is the front view that deviation meter is used in the test of the utility model dc solenidal formula electromagnet static characteristics;
Fig. 2 is the vertical view that deviation meter is used in the test of the utility model dc solenidal formula electromagnet static characteristics;
Fig. 3 is the right view that deviation meter is used in the test of the utility model dc solenidal formula electromagnet static characteristics;
Fig. 4 is the view that the pillar of deviation meter is used in the test of the utility model dc solenidal formula electromagnet static characteristics;
Fig. 5 is the view that the displacement transducer 215 of deviation meter is used in the test of the utility model dc solenidal formula electromagnet static characteristics; Comprising shell 33, coil 32, moving iron core 31, sensing circuit 34 and signal transmssion line 35.The structure of displacement transducer 20 is identical with Fig. 5, installation site and displacement transducer 215 symmetries;
Fig. 6 is the view that the displacement sensing sheet 212 of deviation meter is used in the test of the utility model dc solenidal formula electromagnet static characteristics;
Fig. 7 a is the front view that the position screw 219 of deviation meter is used in the test of the utility model dc solenidal formula electromagnet static characteristics; The structure co-located screw 219 of position screw 25, both installation site symmetries;
Fig. 7 b is the vertical view that the position screw 219 of deviation meter is used in the test of the utility model dc solenidal formula electromagnet static characteristics; The structure co-located screw 219 of position screw 25, both installation site symmetries;
Fig. 7 c is the right view that the position screw 219 of deviation meter is used in the test of the utility model dc solenidal formula electromagnet static characteristics; The structure co-located screw 219 of position screw 25, both installation site symmetries;
Fig. 8 a is the right view that the position knob 221 of deviation meter is used in the test of the utility model dc solenidal formula electromagnet static characteristics; The structure of position knob 27 is identical with position knob 221, both installation site symmetries;
Fig. 8 b is the front view that the position knob 221 of deviation meter is used in the test of the utility model dc solenidal formula electromagnet static characteristics; The structure of position knob 27 is identical with position knob 221, both installation site symmetries;
Fig. 9 a is the front view that the sensor sleeve 216 of deviation meter is used in the test of the utility model dc solenidal formula electromagnet static characteristics; The structure of sensor sleeve 21 is identical with sensor sleeve 216, both installation site symmetries;
Fig. 9 b is the vertical view that the sensor sleeve 216 of deviation meter is used in the test of the utility model dc solenidal formula electromagnet static characteristics; The structure of sensor sleeve 21 is identical with sensor sleeve 216, both installation site symmetries;
Fig. 9 c is the right view that the sensor sleeve 216 of deviation meter is used in the test of the utility model dc solenidal formula electromagnet static characteristics; The structure of sensor sleeve 21 is identical with sensor sleeve 216, both installation site symmetries;
Figure 10 a is the vertical view that the vertical rod sleeve pipe 217 of deviation meter is used in the test of the utility model dc solenidal formula electromagnet static characteristics; The structure of vertical rod sleeve pipe 23 is identical with vertical rod sleeve pipe 217, both installation site symmetries;
Figure 10 b is the right view that the vertical rod sleeve pipe 217 of deviation meter is used in the test of the utility model dc solenidal formula electromagnet static characteristics; The structure of vertical rod sleeve pipe 23 is identical with vertical rod sleeve pipe 217, both installation site symmetries;
Figure 10 c is the rear view that the vertical rod sleeve pipe 217 of deviation meter is used in the test of the utility model dc solenidal formula electromagnet static characteristics; The structure of vertical rod sleeve pipe 23 is identical with vertical rod sleeve pipe 217, both installation site symmetries;
Figure 11 a is the support bracket fastened front view of left lateral position displacement sensor that deviation meter is used in the test of the utility model dc solenidal formula electromagnet static characteristics.The support bracket fastened composition left lateral position of right lateral position displacement sensor displacement sensor fixed support is identical, and installation direction is opposite.
Figure 11 b is the support bracket fastened vertical view of left lateral position displacement sensor that deviation meter is used in the test of the utility model dc solenidal formula electromagnet static characteristics.The support bracket fastened composition left lateral position of right lateral position displacement sensor displacement sensor fixed support is identical, and installation direction is opposite.
Figure 12 dc solenidal formula electromagnet static characteristics test deviation meter basic test schematic diagram.
Embodiment:
Embodiment 1
The dc solenidal formula electromagnet static characteristics test of present embodiment structure such as Fig. 1, Fig. 2, shown in Figure 3 of deviation meter, it mainly is made up of installation frame body and 1 displacement sensing device mounted thereto.Fig. 4-Figure 11 is respectively pillar, displacement transducer 22, displacement sensing sheet, position screw 25, position knob 221, sensor sleeve 216, vertical rod sleeve pipe 23 and the support bracket fastened view of left side sensor that deviation meter is used in the test of the utility model dc solenidal formula electromagnet static characteristics.
The structure of installation frame body as Figure 1-3, by top cover 13, pillar 18(such as Fig. 4) and base 19 form.Top cover 13 and base 19 are rectangular parallelepiped, 4 angle positions of top cover 13 are supported by 4 pillars 18, screw 10 is screwed in the threaded hole at pillar 18 tops through the through hole of pad 11, packing ring 12 and top cover 13 angle positions, and top cover 13 and pillar 18 tops are solidly installed; Pillar 18 threaded afterbodys are packed in the threaded hole of base 19; Top cover 13 middle parts have 4 be rectangle distribute the installation through hole, 4 screws 14 pass through pad 15 respectively and through hole are installed and nut 16 screws in the threaded hole of dc solenidal formula electromagnet 17, dc solenidal formula electromagnet 17 are installed in the below of top cover 13; On top cover 13 lateral symmetry axles, the outside of the installation through hole of electromagnet 17, every side has 1 displacement transducer signal transmission line through hole.
The displacement sensing device is by 2 displacement transducers, 2 sensor fixed supports (as Figure 11 a, Figure 11 b) and 1 displacement sensing sheet 212(such as Fig. 6) form.2 displacement transducers are left lateral position displacement sensor 215 and right lateral position displacement sensor 20(such as Fig. 5), 2 displacement sensor structures and function are identical; 2 sensor fixed supports comprise left side fixed support and right side fixed support, the left side fixed support is formed identical with the right side fixing rack structure, the relative electromagnet symmetry in installation site, the support bracket fastened composition structure of left lateral position displacement sensor is shown in Figure 11 a, Figure 11 b.Left side sensor fixed support comprises sensor sleeve 216, vertical rod 214, vertical rod sleeve pipe 217(such as Figure 10 a, Figure 10 b, Figure 10 c), pad 218, position screw 219(such as Fig. 7 a, Fig. 7 b, Fig. 7 c), position screw grommet 220, pad 222, position knob 221(such as Fig. 8 a, Fig. 8 b) and vertical rod pad 213 compositions.
Vertical rod sleeve pipe 217 is " U " type structure (as Figure 10 a, Figure 10 b, Figure 10 c), and there are 2 through holes " U " type opening both sides.
Sensor sleeve 216(such as Fig. 9 a, Fig. 9 b, Fig. 9 c in the described displacement sensing device) main body be the thin wall U-shaped pipe of cylindrical shape, the about 1-2 millimeter of pipe thickness is sleeved on the outside of position screw 219 ends.On the horizontal direction, the top reduced diameter portion of displacement transducer sleeve pipe 216 has through hole (being that thin wall U-shaped pipe left end has circular hole), left hole (being through hole) is adjacent with vertical rod sleeve pipe 217, its right ports aperture (being the thin walled tube internal diameter) also is slightly larger than the diameter (so position screw 219 can penetrate and be enclosed within the displacement transducer sleeve pipe 216 from the right side) of position screw 219 ends; 1/5 of length occupy-place displacement sensor sleeve pipe 216 total lengths of the end reduced diameter portion of the displacement transducer sleeve pipe 216 of left hole one end, its left hole aperture is less than the diameter of position screw 219 ends, but be slightly larger than the cylinder diameter of position screw 219 threaded sections, after so design can guarantee that position screw 219 successively passes the right ports and left hole of displacement transducer sleeve pipe 216, its end is sleeved in the displacement transducer sleeve pipe 216, when the left side fixed support clamps displacement transducer 215, between displacement transducer 215 and the vertical rod 214 a bit of spacing is arranged, thereby when guaranteeing sensing electromagnet armature micro-stroke, displacement transducer 215 moves up and down in the process with displacement sensing sheet 212, be not subjected to the obstruction of vertical rod 214, the measuring accuracy height; On the vertical direction, displacement transducer sleeve pipe 216 has 2 coaxial through-holes, its aperture is slightly larger than the aperture of position screw 219 end through holes, the aperture of position screw 219 end through holes is slightly larger than the external diameter of displacement transducer 215 again, so design, can guarantee the vertical installation site of fine setting displacement transducer 215 in the through hole of position screw 219 ends and displacement transducer sleeve pipe 216, the installation site of displacement transducer 215 is basic vertical with base 19, consistent with the armature of electromagnet 17, and deviation angle is not more than 1 °; Can make again simultaneously that displacement transducer 215 is without hindrance in vertical direction freely to move up and down, guarantee the accurately micro-stroke of sensing electromagnet 17 armature.
Described position screw 219(such as Fig. 7 a, Fig. 7 b, Fig. 7 c) be end long spiro nail with holes, the length of screw is than displacement transducer 215 and level interval, vertical rod 214 diameters, pillar 18 diameters and the vertical rod 214 of vertical rod 214 and the level interval length summation long 1/3 of pillar 18.Guarantee that thus the position knob 221 that links to each other with position screw 219 tail ends is in the outside of pillar 18, thereby carry out the operation of position knob 221 and the position adjustments of displacement transducer 215 easily.
Described vertical rod sleeve pipe 217(such as Figure 10 a, Figure 10 b, Figure 10 c) be the opening cylinder of a perforated cavities, outer shape is " U " shape, and the shape approximation of interior bore is " Ω " shape, divides about two parts, the inboard of vestibule is circular hole, and the outside is the rectangle hole slot.The circular hole of vertical rod sleeve pipe 217 interior bore is coaxial with vertical rod 214, and its slightly larger in diameter is in the diameter of vertical rod 214; On the tube wall of the rectangle hole slot both sides, the outside of vertical rod sleeve pipe 217 interior bore 2 coaxial horizontal through hole are arranged, the aperture of through hole is identical with the aperture of sensor sleeve 216 left hole, namely is slightly larger than the cylinder diameter of position screw 219 threaded sections.Vertical rod sleeve pipe 217 is enclosed within the vertical rod 214, and on the horizontal direction, the right side of vertical rod sleeve pipe 217 links to each other with sensor sleeve 216, and the left side links to each other with position screw grommet 220 through pad 218.When the position knob 221 that turns clockwise, in the threaded hole of position screw 219 afterbodys meeting precession position knob 221, screw 219 length in position reduce, displacement transducer sleeve pipe 216 clamps from both sides with vertical rod sleeve pipe 217 opening portions respectively with pad 218, position screw grommet 220, pad 222 and position knob 221, thereby vertical rod sleeve pipe 217 is fastened on a certain vertical height of vertical rod 214, simultaneously displacement transducer 215 is limited on the vertical installation direction.When being rotated counterclockwise position knob 221,214 of vertical rod sleeve pipe 217 and vertical rods " disengaging ", both belong to non-tight contact and are sleeved on together, at this moment, vertical rod sleeve pipe 217 can drive position screw 219 and coupled displacement transducer sleeve pipe 216, position screw grommet 220, pad 218,222 and position knob 221 move up and down along vertical rod 214 together, adjust their installation sites in vertical rod 214.
In the fixed support of described left side between each parts and and miscellaneous part such as displacement transducer 215 between annexation as follows: 1) on the horizontal direction: screw 219 ends in position are sleeved in the displacement transducer sleeve pipe 216, its threaded barrel portion is passed by the left hole of displacement transducer sleeve pipe 216, pass the through hole of vertical rod sleeve pipe 217 " U " type openend both sides then, again successively behind pad 218, position screw grommet 220, pad 222, in the threaded hole of tail end screw-in position knob 221.When screwing position knob 221, vertical rod sleeve pipe 217 can be sleeved on vertical rod 214 on.2) on the vertical direction, displacement transducer 215 passes the through hole of position screw 219 ends and with two through holes of its sensor sleeve that is sleeved on 216 vertical direction, link to each other with displacement sensing sheet 212 with nut 210 through pad 211 then, the signal transmssion line of displacement transducer 215 is drawn by top cover 13 upper sensor signal transmssion line through holes; So design can guarantee that the installation of displacement transducer 215 is vertical with base 19.3) vertical rod 214 is right cylinder, and tail end is threaded, is solidly installed with base 19 in the threaded hole of vertical rod pad 213 screw-in bases 19.
Described right side fixed support comprises vertical rod pad 29, vertical rod 22, sensor sleeve 21, vertical rod sleeve pipe 23, pad 24, position screw 25, position screw grommet 26, and position knob 27 and pad 28 are formed.Annexation in the fixed support of right side between each parts is identical with the left side fixed support, and direction is opposite.
The thickness of top cover 13 is between 1.5 centimetres～2 centimetres in the described installation frame body; The thickness of base 19 is more than or equal to the twice of top cover 13 thickness, and the length of base 19 and width be big by 1/3 than top cover 13 at least all.Top cover 13 and base 19 are cast iron quality and make.
Described displacement transducer 215(such as Fig. 5) comprise shell 33, coil 32, moving iron core 31, sensing circuit 34 and signal transmssion line 35, (shell 33 respectively has the tubbiness right cylinder of a perforate for two ends, shell 33 inside left are coil 32, and coil inside is moving iron core 31; Shell 33 inner right side sensing circuits 34, sensing circuit 34 links to each other with signal transmssion line 35.This displacement transducer is common commercially available displacement transducer) through hole of signal transmssion line 35 on top cover 13 draw, and moving iron core 31 tail ends link to each other with displacement sensing sheet 212 with pad 211 through nut 210.When displacement sensing sheet 212 moves, the moving iron core 31 that drives displacement transducer 215 is mobile in coil 32, along with the position difference of moving iron core 31, the induction electromotive force difference that coil 32 produces, the voltage signal of generation spreads out of through sensing circuit 34 and signal transmssion line 35.The structure of displacement transducer 20 and principle are identical with displacement transducer 215, installation site and displacement transducer 215 symmetries.
Described installation frame body B-C post 18 is right cylinder, and there is threaded hole its inside, top, by screw 10, packing ring 12 and pad 11 and top cover 13 close installation; The bottom of pillar 18 is threaded right cylinder, and its reach is suitable with base 19 thickness, and the threaded hole by base 19 is packed on the base 19; The middle part outside surface of pillar 18 has two parallel shallow grooves; The summation of the stroke of armature when the height of pillar 18 is greater than the height of thickness, solenoid electromagnet 17 of thickness, the base 19 of top cover 13 and solenoid electromagnet 17 work.
Described displacement sensing sheet 212 is thin rigid metal sheet (see figure 6)s, its both sides band aperture, displacement transducer 20, the threaded afterbody of 215 moving iron core passes aperture and is linked to each other with displacement sensing sheet 212 with pad 211 by nut 210, and the middle part of displacement sensing sheet 212 is corresponding with the armature position of electromagnet 17.After energising, electromagnet 17 armature move down, and the moving iron core of the displacement transducer 20,215 that displacement sensing sheet 212 and two ends connect is also mobile thereupon, and the signal transmssion line of displacement transducer 20,215 spreads out of displacement variable, carries out displacement measurement.
Carry out dc solenidal formula electromagnet static characteristics and test when using displacement measurement, at first, regulate left and right position knob 27,221 again, left and right displacement transducer 20,215 position adjustments are become vertical install, parallel with electromagnet 17 armature directions; Then, give electromagnet 17 energisings, its armature moves down, collide with displacement sensing sheet 212 middle parts, displacement sensing sheet 212 together moves down with armature, the moving iron core that drives simultaneously in the coupled left and right displacement transducer 20,215 moves, and displacement transducer 20,215 signal transmssion line spread out of the displacement variable signal that collects and record; Then two displacement signal numerical value are averaging to calculate and obtain the electromagnet 17 armature displacement of this moment.The utility model adopts the method that the electromagnet armature stroke is measured, and has solved information acquisition difficulty and the not high key issue of precision of dc solenidal electromagnet micro-stroke well.The ultimate principle of its test as shown in figure 12.
As shown in figure 12, displacement transducer 20,215 is connected with displacement sensing sheet 212, and tested electromagnet 17 moving iron cores when not switching on are on same horizontal line, and they are respectively a and b apart from the distance of electromagnet 17 moving iron cores, and a=b.After the energising, when the distance that moves when tested electromagnet 17 moving iron cores is X, because the rigidity of displacement sensing sheet 212 is perfect condition, might can not drive the same distance of 2 displacement transducer mobile phases in the reality, some deviations can occur, suppose that the distance that displacement transducer 215 moves is X
1, the distance that displacement transducer 20 moves is X
2, then can get under a proportional relationship:
Under the perfect condition (a=b), have:
Since mismachining tolerance and precision factor, under the general actual conditions, a ≠ b.
Suppose a=2b, then have:
Because X
1And X
2Between difference very little, so
Littler, so Δ X can ignore.
Suppose
Then have:
In like manner, Ci Shi Δ X also can ignore.
Because actual mismachining tolerance can not cause the big gap between above-mentioned two hypothesis, so, can carry out the calculating of electromagnet 17 iron core displacements by formula (2), solve its iron core displacement and gathered difficult key issue.Table 1 is depicted as and utilizes the utility model to carry out the partial data that the displacement measurement test obtains.
Table 1 partial dislocation is measured test figure
Installation frame body of the present utility model is to design according to the work characteristics of electromagnet 17 and its static characteristics test request fully, and it is simple for structure, and simple operation can reduce the measuring error that causes because of manually-operateds such as installations.Wherein, the major function of top cover 13 is fixing dc solenidal formula electromagnet 17, and fixedly the load-bearing pillar 18; Because the weight of test electromagnet 17 is heavier relatively, the stroke ratio of electromagnet 17 is shorter, occurs deviation easily, so top cover 13 will have certain rigidity and thickness, can guarantee stable the installation like this; While can vertically install in order to guarantee electromagnet 17, and the machining precision of top cover 13 must be high, smooth; But top cover 13 again can not be too thick, and the thickness that satisfies base 19 is the twice of top cover 13 at least, can guarantee the center of gravity of whole deviation meter so on the lower, can suppress concussion and impact that electromagnet 17 occurs in test process, guarantee deviation meter complete stability in test process, deviation does not appear in test data, thereby reduces measuring error.
The middle part outside surface of pillar 18 has two parallel shallow grooves, and this design is in order to use anchor clamps clamp posts 18 to operate easily, makes the installation process of installation frame body laborsaving, convenient, efficient.
The utility model has designed the displacement transducer 20,215 of 2 symmetries, carry out the measurement of electromagnet 17 armature travels by 2 displacement transducers 20,215 displacements of gathering, it is short to have solved dc solenidal electromagnet stroke well, and the displacement of armature travel is gathered difficulty and the not high key issue of precision.
The displacement sensing sheet 212 of the utility model design adopts thin rigid metal sheet, can prevent that electromagnet 17 armature from repeatedly contacting after, deform, thereby cause the inaccurate of measurement result.
Embodiment 2:
Middle part at top cover 13, open 8 through hole is installed, 2 electromagnet are installed in front and back, open 2 displacement transducer signal transmission line through holes respectively in the both sides of each electromagnet, 2 cover displacement sensing devices are installed, other devices and annexation are carried out the measurement of armature travel according to above-mentioned method of testing to electromagnet with embodiment 1, can finish required test assignment equally.
In the utility model displacement transducer fixed support, be provided with the position screw, sensor sleeve, vertical rod sleeve pipe, position knob and screw grommet, realized fast displacement transducer being in place symmetrical installation site on the vertical and horizontal direction of function and limit sensor has solved the fixed installation difficult problem of displacement sensing device.Improved the convenience of installation, adjusting and the disassembling section of deviation meter, guaranteed simultaneously in test product installation, adjusting and the unloading process, the consistance of displacement sensing device installation site on the vertical and horizontal direction.
Lateral surface and the displacement transducer inboard aperture lateral surface shape of the vertical rod sleeve pipe horizontal through hole of the utility model design are coincide, when screwing the position knob, the position screw can block displacement transducer sleeve pipe and vertical rod sleeve pipe, guarantees that the vertically arranged deviation angle of displacement transducer is not more than 1 °.
The utility model is not addressed part and is applicable to prior art.
Claims (8)
1. deviation meter is used in a dc solenidal formula electromagnet static characteristics test, it is characterized by this deviation meter and comprises installation frame body and displacement sensing device mounted thereto;
The composition of described installation frame body comprises top cover, pillar and base; Pillar is packed on the base, and top cover is fixed on the pillar by screw; There is the installation through hole at the top cover middle part, and screw via through holes, pad and nut are installed in dc solenidal formula electromagnet the below of top cover; On top cover lateral symmetry axle, the through hole outside is installed, displacement transducer signal transmission line through hole is arranged;
Described displacement sensing device is made up of 2 displacement transducers, 2 sensor fixed supports and 1 displacement sensing sheet; 2 displacement transducers are left lateral position displacement sensor and right lateral position displacement sensor, and 2 displacement sensor structures and function are identical; 2 sensor fixed supports comprise left side fixed support and right side fixed support, the left side fixed support is formed identical with the right side fixing rack structure, the relative electromagnet symmetry in installation site, wherein, in the fixed support of described left side between each parts and and miscellaneous part between position and annexation as follows: 1) on the horizontal direction: the position screw end is sleeved in the displacement transducer sleeve pipe, its threaded barrel portion is passed by the left hole of displacement transducer sleeve pipe, pass the through hole of vertical rod sleeve pipe " U " type openend both sides then, again successively through pad, the position screw grommet, behind another pad, tail end screws in the threaded hole of position knob; When screwing the position knob, the vertical rod casing pipe sleeve is contained in the vertical rod; 2) on the vertical direction, displacement transducer passes the through hole of position screw end and with two through holes of its sensor sleeve vertical direction that is sleeved on, link to each other with the displacement sensing sheet with nut through pad then, the signal transmssion line of displacement transducer is drawn by top cover upper sensor signal transmssion line through hole; 3) vertical rod is right cylinder, and tail end is threaded, is solidly installed with base in the threaded hole of vertical rod pad screw-in base.
2. deviation meter is used in dc solenidal formula electromagnet static characteristics test as claimed in claim 1, and it is characterized by described installation frame body B-C post is right cylinder, and there is threaded hole its inside, top, by screw, packing ring and pad and top cover close installation; The bottom of pillar is threaded right cylinder, and its reach is suitable with base thickness, and the threaded hole by base is packed on the base; The middle part outside surface of pillar has two parallel shallow grooves; The summation of armature travel when the height of pillar is greater than top cover thickness, base thickness, solenoid electromagnet height and solenoid electromagnet work.
3. dc solenidal formula electromagnet static characteristics as claimed in claim 1 is tested and is used deviation meter, it is characterized by described displacement sensing sheet is thin rigid metal sheet, both sides band aperture, displacement transducer moving iron core afterbody passes aperture and is linked to each other with the displacement sensing sheet with pad by nut, and the middle part of displacement sensing sheet is corresponding with the electromagnet armature position.
4. deviation meter is used in dc solenidal formula electromagnet static characteristics test as claimed in claim 1, and the main body that it is characterized by displacement transducer sleeve pipe in the described displacement sensing device is the thin wall U-shaped pipe of cylindrical shape, is sleeved on the outside of position screw end; On the horizontal direction, the displacement transducer cannula tip has through hole, and through hole is adjacent with the vertical rod sleeve pipe, and thin wall U-shaped bore is greater than the diameter of position screw end; 1/5 of the length occupy-place displacement sensor sleeve pipe total length of displacement transducer cannula tip reduced diameter portion, its through-hole aperture be less than the diameter of position screw end, but greater than the cylinder diameter of position screw belt threaded portion; On the vertical direction, the displacement transducer sleeve pipe has 2 coaxial through-holes, its aperture is greater than the aperture of position screw end through hole, the aperture of position screw end through hole is again greater than the external diameter of displacement transducer, displacement transducer is enclosed within the through hole of position screw and displacement transducer sleeve pipe, and its vertical offset angle is not more than 1 °.
5. dc solenidal formula electromagnet static characteristics as claimed in claim 1 is tested and is used deviation meter, it is characterized by described position screw is end long spiro nail with holes, the length of screw is than the level interval of displacement transducer and vertical rod, the vertical rod diameter, strut diameter and vertical rod and pillar level interval length summation long 1/3.
6. deviation meter is used in dc solenidal formula electromagnet static characteristics as claimed in claim 1 test, the opening cylinder that to it is characterized by described vertical rod sleeve pipe be perforated cavities, and outer shape is " U " shape; Interior bore be shaped as " Ω " shape, divide about two parts, the inboard of vestibule is circular hole, the outside is the rectangle hole slot; The circular hole of vertical rod inside pipe casing vestibule is coaxial with vertical rod, and its diameter is greater than the diameter of vertical rod; On the tube wall of its rectangle hole slot both sides, outside 2 coaxial horizontal through hole are arranged, the aperture of through hole is identical with the aperture of sensor sleeve left hole, namely greater than the cylinder diameter of position screw belt threaded portion; The vertical rod casing pipe sleeve is in vertical rod, and on the horizontal direction, the right side of vertical rod sleeve pipe links to each other with sensor sleeve, and the left side links to each other with the position screw grommet through pad.
7. deviation meter is used in dc solenidal formula electromagnet static characteristics test as claimed in claim 1, it is characterized by the thickness of top cover in the described installation frame body between 1.5 centimetres～2 centimetres; The thickness of base is more than or equal to the twice of top cover thickness, and the length of base and width be big by 1/3 than top cover all.
8. dc solenidal formula electromagnet static characteristics as claimed in claim 1 is tested and is used deviation meter, the quantity that it is characterized by described displacement sensing device is one or more, size is identical or different, simultaneously, the quantity of electromagnet also is one or more on the installation frame body, quantity is identical with the quantity of displacement sensing device, and model is identical or different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220653393 CN203037205U (en) | 2012-11-30 | 2012-11-30 | Displacement measuring device used for direct-current solenoid-type electromagnet static characteristic test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220653393 CN203037205U (en) | 2012-11-30 | 2012-11-30 | Displacement measuring device used for direct-current solenoid-type electromagnet static characteristic test |
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| CN203037205U true CN203037205U (en) | 2013-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220653393 Expired - Fee Related CN203037205U (en) | 2012-11-30 | 2012-11-30 | Displacement measuring device used for direct-current solenoid-type electromagnet static characteristic test |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102967255A (en) * | 2012-11-30 | 2013-03-13 | 河北工业大学 | Displacement measurer for testing static characteristics of direct-current solenoid electromagnet |
| CN104634864B (en) * | 2015-02-06 | 2018-04-20 | 中国计量学院 | A kind of metal magnetic memory sensor vertical fixing device |
-
2012
- 2012-11-30 CN CN 201220653393 patent/CN203037205U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102967255A (en) * | 2012-11-30 | 2013-03-13 | 河北工业大学 | Displacement measurer for testing static characteristics of direct-current solenoid electromagnet |
| CN104634864B (en) * | 2015-02-06 | 2018-04-20 | 中国计量学院 | A kind of metal magnetic memory sensor vertical fixing device |
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