CN111829696A - Measuring device for electromagnet suction and motion displacement - Google Patents
Measuring device for electromagnet suction and motion displacement Download PDFInfo
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- CN111829696A CN111829696A CN202010726906.7A CN202010726906A CN111829696A CN 111829696 A CN111829696 A CN 111829696A CN 202010726906 A CN202010726906 A CN 202010726906A CN 111829696 A CN111829696 A CN 111829696A
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- electromagnet
- core rod
- measuring
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/04—Measuring force or stress, in general by measuring elastic deformation of gauges, e.g. of springs
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/12—Measuring magnetic properties of articles or specimens of solids or fluids
- G01R33/1253—Measuring galvano-magnetic properties
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- Condensed Matter Physics & Semiconductors (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a measuring device for electromagnet suction and motion displacement, which comprises a supporting seat with an opening at the right end, wherein a spring is arranged in the opening end of the supporting seat, a spring compression core rod penetrates through the supporting seat and the spring, the right end surface of the spring is contacted with the left end surface of a step on the spring compression core rod, the left end of the spring compression core rod movably penetrates into a guide seat, the top surface of a rod body of the spring compression core rod positioned between the guide seat and the supporting seat is tightly attached to the surface of a measuring mechanism, a mandril screw is fixedly connected to the right end of the spring compression core rod, a movable frame is arranged behind the mandril screw, an electromagnet fixing device is arranged on the left end surface of the movable frame, a traction mechanism is arranged behind the movable frame. The invention can directly measure the attraction of the tested electromagnet and the movement displacement of the armature under the action of the attraction of the electromagnet by using a measuring mechanism, and the measuring process is simple.
Description
Technical Field
The invention relates to a measuring device for suction and motion displacement, in particular to a measuring device for the suction and the motion displacement of an electromagnet.
Background
In chinese patent application publication No. CN110007256A, a device for testing the attraction and movement displacement of an electromagnet is disclosed, which comprises a base frame for fixing a tested electromagnet, a gravity assembly for measuring the attraction of the electromagnet, a displacement measurement assembly for measuring the movement displacement of an armature of the electromagnet, and a movement spindle for connecting the armature of the tested electromagnet and the gravity assembly. The working process is as follows: after a tested electromagnet coil fixed on the base frame is electrified, the armature drives the moving main shaft and the gravity component connected to the lower end of the moving main shaft to move towards the direction close to the static iron core together under the action of electromagnetic attraction, and the movement displacement of the tested electromagnet armature can be read through a scale value on the displacement measurement component. In the range of the predicted value of the attraction of the tested electromagnet, the operation is repeated for many times by changing the number of the weights in the gravity assembly, if the main motion shaft can drive the weight tray to move when the number of the weights is N, and the weight tray cannot be driven to move when one weight is added to the weight assembly on the basis of the main motion shaft until the number of the weights is N +1, the electromagnetic attraction value of the electromagnet is between the weight values of N weights to N +1 weights.
Although the movement displacement can be directly read through the scribed line on the displacement measurement component, the number of weights in the gravity component needs to be changed for many times in the suction test, the process is complicated, and the obtained suction value of the electromagnet is in a certain range, so that an exact numerical value cannot be obtained.
Disclosure of Invention
The invention aims to provide a device for measuring the attraction force and the movement displacement of an electromagnet. The measuring device can measure the movement displacement of the electromagnet and also solves the problems that the existing electromagnet suction force measuring process is complicated and the measured value is not accurate.
The technical scheme of the invention is as follows: a measuring device for electromagnet suction and motion displacement comprises a supporting seat with an opening at the right end, a spring is arranged in the opening end of the supporting seat, a spring compression core rod penetrates through the supporting seat and the spring, the right end face of the spring is in contact with the left end face of a step on the spring compression core rod, the left end of the spring compression core rod movably penetrates into a guide seat, the top surface of a rod body of the spring compression core rod between the guide seat and the supporting seat is tightly attached to the surface of a measuring mechanism, a mandril screw is fixedly connected to the right end of the spring compression core rod, a movable frame is arranged behind the right side of the mandril screw, an electromagnet fixing device is arranged on the left end face of the movable frame, a traction mechanism is arranged behind the.
In the device for measuring the attraction force and the movement displacement of the electromagnet, the base body seat comprises two parallel T-shaped grooves on the surface of the base body seat, three through holes are respectively formed in two sides of the bottom of the base body seat, two parallel T-shaped sliding blocks are arranged at the bottom of the movable frame, and the T-shaped sliding blocks are embedded in the T-shaped grooves.
In the device for measuring the attraction force and the movement displacement of the electromagnet, the supporting seat is provided with the inner cavity, the right end of the inner cavity is communicated with the outside, the bottom of the inner cavity is provided with the annular boss, the middle of the annular boss is provided with the through hole, the annular groove is formed between the annular boss and the inner cavity, the spring is clamped in the annular groove, and the spring compression core rod penetrates through the through hole and the spring.
In the device for measuring the attraction force and the movement displacement of the electromagnet, the bottom of the annular groove is provided with the small exhaust hole.
In the device for measuring the attraction force and the movement displacement of the electromagnet, two parallel planes are arranged on the shaft at the left end of the spring compression core rod, one plane is tightly attached to the surface of the measuring mechanism, a threaded hole is formed in the right end of the spring compression core rod, a step is arranged in the middle of the spring compression core rod, the diameter of the outer circle of the step is smaller than that of the inner cavity, and the right end of the spring is in contact with the left end.
In the device for measuring the attraction force and the movement displacement of the electromagnet, the length of the spring in a free state is equal to the depth of the inner cavity, the product of the elastic coefficient of the spring and the maximum compression amount of the spring is larger than the attraction force of the electromagnet to be measured, and the product of the elastic coefficient of the spring and the movement displacement of the armature in the electromagnet to be measured under the action of the attraction force is smaller than the attraction force of the electromagnet to be measured.
In the device for measuring the attraction force and the movement displacement of the electromagnet, the left end of the ejector rod screw is provided with an external thread, and the right end of the ejector rod screw is provided with a sinking platform; and the guide seat is provided with a shaped hole, and the shape of the shaped hole is consistent with the axial section of the left end of the spring compression core rod.
Among the aforementioned measuring device of electro-magnet suction and motion displacement, measuring mechanism is the wheeled disc scale pointer mechanism of friction, including the table frame, table frame top is equipped with the level and penetrates the hole, and the activity has penetrated the plug in the hole is penetrated to the level, and the fixed coupling of plug right-hand member has friction pulley and pointer, and the left end of plug is fixed through the nut after passing the level and penetrating the hole, is fixed with the scale disc on the left table frame side of pointer, and the horizontal plane closely laminates on friction pulley excircle bottom surface and the spring compression plug left end.
In the device for measuring the attraction force and the movement displacement of the electromagnet, a gasket is sleeved on the core rod between the pointer and the scale disc; the scale disc is provided with two layers of scales, the inner layer scale displays the size of the suction force of the detected electromagnet, and the outer layer scale displays the movement displacement of the spring compression core rod.
In the device for measuring the attraction force and the movement displacement of the electromagnet, the traction mechanism is a nut-screw mechanism, the electromagnet fixing device is a three-jaw chuck, and the three-jaw chuck is coaxial with an inner cavity on the supporting seat.
The invention has the beneficial effects that: compared with the prior art, the measuring device is provided with the supporting seat, the spring compression core rod, the ejector rod screw, the guide seat, the movable frame, the measuring mechanism and the traction mechanism, wherein the movable frame is used for fixing the measured electromagnet, the traction mechanism drives the movable frame to move leftwards, the measured electromagnet is in contact with the ejector rod screw to drive the ejector rod screw and the spring compression core rod to move, in the leftward linear movement process of the spring compression core rod, the pointer on the measuring mechanism is driven to do circular motion through friction force, the displacement can be read through the scale disc on the measuring mechanism, the scale disc is of a double-layer structure, each displacement value corresponds to one suction value, and therefore the suction force of the measured electromagnet can be accurately measured, the measuring process is simple, and the measuring precision is high.
Drawings
FIG. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic view of a base structure;
FIG. 3 is a right side view of the bearing block;
FIG. 4 is a left side view of the measuring mechanism;
FIG. 5 is a schematic structural diagram of a measured electromagnet.
Reference numerals: 1-a spring; 2-a base; 21- "T" shaped groove; 22-base mount holes; 3-a supporting seat; 31-a through hole; 32-an annular boss; 33-an annular groove; 34-a vent orifice; 35-mounting holes of the supporting seat; 4-spring compression core rod; 5-a mandril screw; 6-a guide seat; 7-a movable frame; 8-a three-jaw chuck; 9-a measuring mechanism; 91-a friction wheel; 92-a pointer; 93-a graduated disk; 94-a watch holder; 95-a nut; 96-core rod; 97-a gasket; 10-a traction mechanism; 11-measured electromagnet; 111-a core assembly; 112-a push rod; 113-a coil assembly; 114-a pin holder assembly; 115-an armature; 116-a housing; 117 — adjustment screw.
Detailed Description
The invention is further illustrated by the following figures and examples, which are not to be construed as limiting the invention.
The embodiment of the invention comprises the following steps: a device for measuring the attraction force and the movement displacement of an electromagnet is disclosed as shown in the attached figures 1-5, and comprises a supporting seat 3 with an opening at the right end, a spring 1 is arranged in the opening end of the supporting seat 3, a spring compression core rod 4 horizontally penetrates through the supporting seat 3 and the spring 1, the right end face of the spring 1 is in contact with the left end face of a step on the spring compression core rod 4, the left end of the spring compression core rod 4 movably penetrates into a guide seat 6, the top face of a rod body of the spring compression core rod 4 between the guide seat 6 and the supporting seat 3 is tightly attached to the surface of a measuring mechanism 9, a mandril screw 5 is fixedly connected with the right end of the spring compression core rod 4, a movable frame 7 is arranged on the right rear side of the mandril screw 5, an electromagnet fixing device is arranged on the left end face of the movable frame 7.
When the device is used, a tested electromagnet 11 is fixed on an electromagnet fixing device at the left end of the movable frame 7, and the tested electromagnet 11 generally comprises an iron core assembly 111, a push rod 112, a coil assembly 113, a plug seat assembly 114, an armature 115, an outer cover 116 and an adjusting screw 117, as shown in fig. 4. Clamping the detected electromagnet outer cover 116 on an electromagnet fixing device, fixedly connecting the traction mechanism 10 with the movable frame 7, drawing the movable frame 7 to slowly move leftwards along the base seat 2 by the traction mechanism 10 until the end face of the push rod 112 of the detected electromagnet 11 is slightly contacted with the end face of the right side of the ejector rod screw 5, and then zeroing the scale of the measuring mechanism 9. Then the coil component 113 is electrified, the armature 115 drives the push rod 112 and the ejector rod screw 5 to move leftwards along the axial direction of the electromagnet 11 under the action of the attraction force of the electromagnet, until the armature 115 is attracted to the iron core component 111, the ejector rod screw 5 drives the spring compression core rod 4 fixedly connected with the armature to move leftwards in the process of moving leftwards, the end face of the left end of the spring compression core rod 4 drives the pointer of the measuring mechanism 9 in contact with the spring compression core rod to rotate under the action of friction, and the movement displacement of the armature 115 under the action of the attraction force of the electromagnet can be read from the measuring mechanism 9 through the rotation size.
And then, the movable frame 7 is pulled to move slowly leftwards again through the traction mechanism 10, in the moving process, under the action of the step of the spring compression core rod 4, the spring 1 is continuously compressed, the elastic force is continuously increased, and the numerical value at the scale mark in the measuring mechanism 9 when the push rod 112 starts to move rightwards is recorded, wherein the numerical value is the suction value of the electromagnet to be measured.
During the measurement process, the guide seat 6 mainly plays a role in guiding and supporting the spring to compress the core rod 4.
The base seat 2 comprises two T-shaped grooves 21 which are arranged on the surface of the base body in parallel, three through holes 22 are respectively arranged on two sides of the bottom of the base seat 2, two T-shaped sliding blocks which are arranged in parallel are arranged at the bottom of the movable frame 7, and the T-shaped sliding blocks are embedded in the T-shaped grooves 21, so that the movable frame 7 is guaranteed to move linearly under the traction action of the traction mechanism 10.
An inner cavity 33 is formed in the supporting seat 3, the right end of the inner cavity 33 is communicated with the outside, an annular boss 32 is arranged at the bottom of the inner cavity 33, a through hole 31 is formed in the middle of the annular boss 32, an annular groove is formed between the annular boss 32 and the inner cavity 33, a spring 1 is clamped in the annular groove, and a spring compression core rod 4 penetrates through the through hole 31 and the spring 1. When the spring compression core rod 4 moves to the left under the action of the traction mechanism 10, the step on the spring compression core rod moves to the left along with the spring compression core rod, and the spring compression core rod 1 is compressed in the inner cavity 33.
The bottom of the annular groove is provided with a small exhaust hole 34. Due to the arrangement of the small air exhaust holes 34, in the process that the spring compression core rod 4 compresses the spring 1, air in the cavity of the supporting seat 3 is timely exhausted out of the cavity, and the suction detection is prevented from being influenced by resistance generated when the air in the cavity is compressed.
Two parallel planes are arranged on the left end shaft of the spring compression core rod 4, one plane is tightly attached to the surface of the measuring mechanism 9, and the spring compression core rod 4 can be ensured to drive the measuring mechanism 9 to change through friction force in the linear motion process. The right end of the screw rod is provided with a threaded hole for facilitating threaded connection with the ejector rod screw 5. When the sizes of the detected electromagnets 11 are different, different ejector rod screws 5 can be conveniently replaced. The middle of the spring compression core rod 4 is provided with a step, the diameter of the outer circle of the step is smaller than that of the inner cavity 33, and the right end of the spring 1 is in contact with the left end face of the step. So that the step enters the inner cavity 33 to compress the spring 1 during moving to the left side.
The length of the spring 1 in a free state is equal to the depth of the inner cavity 33, the product of the elastic coefficient of the spring 1 and the maximum compression amount of the spring 1 is larger than the attraction force of the tested electromagnet 11, and the product of the elastic coefficient of the spring 1 and the movement displacement of the armature 115 in the tested electromagnet 11 under the action of the attraction force is smaller than the attraction force of the tested electromagnet 11. Because the requirement on the testing precision of the electromagnet attraction is not high, and the requirement on the testing precision of the movement displacement of the armature 115 under the action of the attraction is high, the spring 1 with the larger elasticity coefficient is selected as far as possible on the premise that the product of the spring elasticity coefficient and the maximum spring compression is larger than the attraction of the tested electromagnet and the product of the spring elasticity coefficient and the movement displacement of the armature under the action of the attraction is smaller than the attraction of the tested electromagnet, so that the smaller spring compression can obtain larger elasticity, the minimum scale value of the measurement mechanism displacement is reduced, the displacement measurement precision is improved, and the measurement precision can reach 0.05 mm. In addition, the ejector bolt 5 can be replaced according to the size of the outer circle of the push rod 112, and the electromagnet fixing device can be replaced according to the size of the outer circle of the outer cover 116.
The left end of the ejector rod screw 5 is provided with external threads for being in threaded connection with the right end of the spring compression core rod 4, and the right end of the ejector rod screw 5 is provided with a sinking platform for being in matched contact with the left end face of the push rod 112. And the guide seat 6 is provided with a shaped hole, and the shape of the shaped hole is consistent with the axial section of the left end of the spring compression core rod 4. The shaft part at the left end of the spring compression core rod 4 penetrates through the shaped hole, and stably moves forward under the guiding action of the shaped hole, and meanwhile, the spring compression core rod 4 is prevented from rotating when moving axially.
The measuring mechanism 9 is a friction wheel type disc scale pointer mechanism and comprises a meter frame 94, a horizontal penetrating hole is formed in the upper portion of the meter frame 94, a core rod 96 movably penetrates through the horizontal penetrating hole, external threads are formed in the left end of the core rod 96, a friction wheel 91 and a pointer 92 are fixedly sleeved at the right end of the core rod 96, the left end of the core rod 96 penetrates through the horizontal penetrating hole and then is fixed through a nut 95, and the core rod 96 is prevented from moving left and right in the horizontal penetrating hole. A scale disc 93 is fixed on the side surface of a gauge stand 94 on the left side of the pointer 92, and the bottom surface of the outer circle of the friction wheel 91 is tightly attached to the upper horizontal surface of the left end of the spring compression core rod 4.
In the using process, when the spring compression core rod 4 moves, the horizontal plane at the upper end of the spring compression core rod drives the friction wheel 91 to rotate due to the friction effect, so that the pointer 92 rotates along with the rotation, the scale disc 93 is provided with two layers of scales, the inner layer scale displays the suction force of the detected electromagnet 11, the outer layer scale displays the movement displacement of the spring compression core rod 4, the positions of the two layers of scales correspond to each other one by one, and the relation between the suction force and the movement displacement at each corresponding scale is FSuction force＝K*SDisplacement ofIn the formula, K is the elastic coefficient of the spring, and in this embodiment, a spring having K of 1 to 2(N/mm) is selected. During the measurement, the movement displacement of the armature 115 under the attraction force of the electromagnet can be read from the outer layer scale mark of the scale disc 93. The traction mechanism 10 pulls the movable frame 7 to move slowly and leftwards continuously, in the moving process, under the action of the spring compression core rod 4, the spring 1 is compressed continuously, the elastic force is increased continuously, and the numerical value of the inner layer scale mark of the scale disc 93 pointed by the pointer 92 when the push rod 112 starts moving rightwards is recorded, and the numerical value is the suction value of the electromagnet to be measured.
A spacer 97 is further sleeved on the core rod 96 between the pointer 92 and the scale disc 93, and a gap of 0.3-0.5 mm is reserved between the pointer 92 and the scale disc 93.
The traction mechanism 10 is a nut-screw mechanism and is used for drawing the movable frame 7 to move leftwards, so that the movement is ensured to be stably carried out. The electromagnet fixing device is a three-jaw chuck 8, the three-jaw chuck 8 clamps an outer cover 116 of the electromagnet 11 to be detected by using a soft jaw, and the three-jaw chuck 8 is coaxial with an inner cavity 33 on the supporting seat 3, so that the spring compression core rod 4 can move linearly. The soft claws of the three-jaw chuck 8 can be replaced according to the size of the outer circle of the outer cover 116 in the using process.
Claims (10)
1. The utility model provides a measuring device of electro-magnet suction and motion displacement which characterized in that: comprises a supporting seat (3) with an opening at the right end, a spring (1) is arranged in the opening end of the supporting seat (3), a spring compression core rod (4) passes through the supporting seat (3) and the spring (1), the right end surface of the spring (1) is contacted with the left end surface of a step on the spring compression core rod (4), the left end of the spring compression core rod (4) movably penetrates into a guide seat (6), the top surface of a rod body of a spring compression core rod (4) positioned between a guide seat (6) and a supporting seat (3) is tightly attached to the surface of a measuring mechanism (9), a mandril screw (5) is fixedly connected to the right end of the spring compression core rod (4), a movable frame (7) is arranged on the right rear side of the mandril screw (5), an electromagnet fixing device is arranged on the left end face of the movable frame (7), a traction mechanism (10) is arranged on the right rear side of the movable frame (7), and the bottom of the movable frame (7) is movably connected with a base body seat (2).
2. The device for measuring the attraction force and the movement displacement of the electromagnet according to claim 1, wherein: the base body seat (2) comprises two T-shaped grooves (21) which are arranged on the surface of the base body seat in parallel, three through holes (22) are respectively arranged on two sides of the bottom of the base body seat (2), two T-shaped sliding blocks which are arranged in parallel are arranged at the bottom of the movable frame (7), and the T-shaped sliding blocks are embedded in the T-shaped grooves (21).
3. The device for measuring the attraction force and the movement displacement of the electromagnet according to claim 1, wherein: be equipped with inner chamber (33) on bearing (3), inner chamber (33) right-hand member switches on with the outside, and inner chamber (33) bottom is equipped with annular boss (32), is equipped with through-hole (31) in the middle of annular boss (32), forms the ring channel between annular boss (32) and inner chamber (33), and the card has spring (1) in the ring channel, and through-hole (31) and spring (1) are passed in spring compression plug (4).
4. The device for measuring the attraction force and the movement displacement of the electromagnet according to claim 3, wherein: and the bottom of the annular groove is provided with a small exhaust hole (34).
5. The device for measuring the attraction force and the movement displacement of the electromagnet according to claim 3, wherein: two parallel planes are axially arranged at the left end of the spring compression core rod (4), one plane is tightly attached to the surface of the measuring mechanism (9), a threaded hole is formed in the right end of the spring compression core rod, a step is arranged in the middle of the spring compression core rod, the diameter of the outer circle of the step is smaller than that of the inner cavity (33), and the right end of the spring (1) is in contact with the left end face of the step.
6. The device for measuring the attraction force and the movement displacement of the electromagnet according to claim 3, wherein: the length of the spring (1) is equal to the depth of the inner cavity (33) in a free state, the product of the elastic coefficient of the spring (1) and the maximum compression amount of the spring (1) is larger than the attraction force of the tested electromagnet (11), and the product of the elastic coefficient of the spring (1) and the movement displacement of the armature (115) in the tested electromagnet (11) under the action of the attraction force is smaller than the attraction force of the tested electromagnet (11).
7. The device for measuring the attraction force and the movement displacement of the electromagnet according to claim 1, wherein: the left end of the ejector rod screw (5) is provided with an external thread, and the right end of the ejector rod screw is provided with a sinking platform; and the guide seat (6) is provided with a shaped hole, and the shape of the shaped hole is consistent with the axial section of the left end of the spring compression core rod (4).
8. The device for measuring the attraction force and the movement displacement of the electromagnet according to claim 1, wherein: measuring mechanism (9) are wheeled disc scale pointer mechanism of friction, including table frame (94), table frame (94) top is equipped with the level and penetrates the hole, the level is penetrated the activity and is penetrated in the hole and has been penetrated plug (96), the fixed cover of plug (96) right-hand member has been cup jointed friction pulley (91) and pointer (92), the left end of plug (96) is fixed through nut (95) after passing the level and penetrating the hole, be fixed with scale disc (93) on table frame (94) the left side of pointer (92) on the side, the horizontal plane closely laminates on friction pulley (91) excircle bottom surface and spring compression plug (4) left end.
9. The apparatus of claim 8, wherein the measuring device comprises: a gasket (97) is sleeved on the core rod (96) between the pointer (92) and the scale disc (93); the scale disc (93) is provided with two layers of scales, the inner layer scale displays the size of the suction force of the measured electromagnet (11), and the outer layer scale displays the movement displacement of the spring compression core rod (4).
10. The device for measuring the attraction force and the movement displacement of the electromagnet according to claim 3, wherein: the traction mechanism (10) is a nut screw mechanism, the electromagnet fixing device is a three-jaw chuck (8), and the three-jaw chuck (8) is coaxial with an inner cavity (33) on the supporting seat (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010726906.7A CN111829696A (en) | 2020-07-26 | 2020-07-26 | Measuring device for electromagnet suction and motion displacement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010726906.7A CN111829696A (en) | 2020-07-26 | 2020-07-26 | Measuring device for electromagnet suction and motion displacement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111829696A true CN111829696A (en) | 2020-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010726906.7A Withdrawn CN111829696A (en) | 2020-07-26 | 2020-07-26 | Measuring device for electromagnet suction and motion displacement |
Country Status (1)
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| CN (1) | CN111829696A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104453777A (en) * | 2014-12-04 | 2015-03-25 | 中国石油天然气股份有限公司 | Mechanical pressure display constant pressure air release valve |
| CN106568537A (en) * | 2016-11-08 | 2017-04-19 | 上海宇航系统工程研究所 | Electromagnet suction measuring device |
| CN207280650U (en) * | 2017-08-30 | 2018-04-27 | 广西电网有限责任公司电力科学研究院 | A kind of electromagnet suction experimental rig |
| CN111765996A (en) * | 2020-06-12 | 2020-10-13 | 中国航发贵州红林航空动力控制科技有限公司 | Electromagnet suction and motion displacement measuring device |
-
2020
- 2020-07-26 CN CN202010726906.7A patent/CN111829696A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104453777A (en) * | 2014-12-04 | 2015-03-25 | 中国石油天然气股份有限公司 | Mechanical pressure display constant pressure air release valve |
| CN106568537A (en) * | 2016-11-08 | 2017-04-19 | 上海宇航系统工程研究所 | Electromagnet suction measuring device |
| CN207280650U (en) * | 2017-08-30 | 2018-04-27 | 广西电网有限责任公司电力科学研究院 | A kind of electromagnet suction experimental rig |
| CN111765996A (en) * | 2020-06-12 | 2020-10-13 | 中国航发贵州红林航空动力控制科技有限公司 | Electromagnet suction and motion displacement measuring device |
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Application publication date: 20201027 |
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| WW01 | Invention patent application withdrawn after publication |