CN102538635A - Axial clearance detection device for electromagnetic relay and use method thereof - Google Patents
Axial clearance detection device for electromagnetic relay and use method thereof Download PDFInfo
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- CN102538635A CN102538635A CN2010105904216A CN201010590421A CN102538635A CN 102538635 A CN102538635 A CN 102538635A CN 2010105904216 A CN2010105904216 A CN 2010105904216A CN 201010590421 A CN201010590421 A CN 201010590421A CN 102538635 A CN102538635 A CN 102538635A
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Abstract
The invention discloses an axial clearance detection device for an electromagnetic relay and a use method thereof. The axial clearance detection device is arranged above an elastic control mechanism and below a dial indicator. The bottom end of an ejecting block of a clamping mechanism is arranged on the bottom surface of a seat plate, and the top end of the top block of the clamping mechanism extends out from the middle part of a plate cover. The upper ends of two rotatable pressing blocks extend out of the cover plate; the lower ends of the two rotatable pressing blocks are connected with a spring; and the inner ends of sliding blocks capable of sliding transversely are butted against to the outside of the lower ends of the two pressing blocks. The locating block of the elastic control mechanism and the center hole of a bottom plate are inserted into a spring seat and an ejecting rod which are connected with an ejecting spring; the inner ends of the rotatable pressing blocks are arranged at the bottom of the spring seat; and the outer ends of the rotatable pressing blocks extend out. The use method of the axial clearance detection device comprises the following steps of: pushing and pressing the outer ends of the two sliding blocks so as to press the upper ends of the two pressing blocks to open, and putting a piece to be detected; loosening the sliding blocks, and tightly clamping the piece to be detected after the upper ends of the pressing blocks are closed; adjusting the dial indicator, ejecting an armature through the bottom end of the indicator head, moving the armature to the lowermost part, and returning the reading to zero; and pressing the outer ends of the pressing blocks, upwards ejecting the armature through the ejecting block, and taking the dial indicator reading at this time as the axial clearance of the piece to be detected. The axial clearance detection device and the use method, disclosed by the invention, have the characteristics of simpleness for operation, uniformity for ejecting force, rapidness and accuracy.
Description
(1) technical field
The present invention relates to the electromagnetic relay detection technique, be specially a kind of electromagnetic relay end play pick-up unit and method of application.
(2) background technology
Electromagnetic relay relies on the electromagnetic force of electromagnetic system to produce action, and wherein armature is moving component, and coil powers up the back electromagnetic attraction rotates armature, and drives the contact action.Armature is rotatably installed on the axle, and the upper and lower side of axle then is installed on a sheet and a support. Armature and prop up up and down between sheet, support and have end play sways armature and has uncontrollable axial float in the process, and the size of this shifting amount has bigger influence to the stability of relay parameter and anti-shake performance etc.
Therefore the detection to electromagnetic relay end play is one of important test item in the relay assembling.But the equipment that does not have special measurement electromagnetic relay end play at present; Operator's hand of manual inspection is stirred armature play up and down; Rely on feel, experience roughly to judge the size of end play; If it is excessive to push the strength of armature, make the supporting structure distortion easily, artificially increase end play and cause waste product; Perhaps insert between the end play of an armature and a sheet, roughly judge the end play size with the gap pad.Two kinds of methods all can only roughly be judged the end play size, and error is big, and the human factor influence is big, needs veteran operator, and detection efficiency is also lower.
The isolated plant of design electromagnetic relay end play, the accurate detection that solves end play is the prerequisite that improves the electromagnetic relay quality.
(3) summary of the invention
The objective of the invention is to design a kind of electromagnetic relay end play pick-up unit and method of application; The support of the fixing armature part of electromagnetic relay to be measured of special-purpose clamping mechanism; The elasticity control gear is moving axially armature with suitable elastic force, and dial gauge is measured the armature amount of movement.
The electromagnetic relay end play pick-up unit of the present invention's design comprises base, dial gauge, clamping mechanism and elasticity control gear.Dial gauge fixed mount bottom is installed on base; The dial gauge adjustable ground is installed on the fixed mount, gauge outfit vertically downward; The elasticity control gear is installed on the base, and clamping mechanism is installed on the elasticity control gear, is positioned at dial gauge gauge outfit below, and clamping mechanism can take off independent operation easily.
Clamping mechanism comprises seat board, cover plate, slide block, briquetting and jacking block, and the jacking block bottom is in center pit, the top of seat board bottom surface and stretches out slightly from the cover plate middle part.Under, the jacking block left and right sides are equipped with the briquetting rotating shaft of two levels, and the briquetting middle part is porose, and the hole at two briquettings middle part is passed in two briquetting rotating shafts respectively rotationally, and the cover plate of the jacking block left and right sides has the briquetting hole of 2 symmetries, and the briquetting hole is stretched out in 2 briquettings upper end.2 briquetting lower ends have spring to connect each other.Briquetting, spring all are in the central through hole of jacking block.There are 2 vertical register pins in the outside about 2 briquettings, seat board and cover plate are fixed in two ends up and down, and there is waist shape chute at the slide block center, two slide blocks be positioned at 2 briquettings about the outside, register pin is inserted in its waist shape chute.The slide block below is a backing plate, keeps the slide block level, and the inner of slide block is butted on the lateral surface of 2 briquetting lower ends, and stretch out outside the width of cover plate and seat board the outer end of slide block.When not stressing, two briquettings upper ends relatively, spacing is less than to be measured external diameter; The inside outer end of pushing two slide blocks, slide block is oppressed the lower end of two briquettings, and two briquettings are rotated around the briquetting rotating shaft, two briquetting the first half to both sides open, the spacing of upper end is greater than to be measured external diameter, conveniently puts into to be measured, to be measured places on the jacking block.Slide block unclamps, spring pushes briquetting and resets, and the briquetting upper end closes up, and clamps UUT.
Said jacking block is divided into jacking block and following jacking block; Following jacking block center is a U-lag; Briquetting, spring all are in the U-lag of following jacking block, and last jacking block bottom surface joins with following jacking block, and last jacking block top is divided into relative two in front and back and stretches out cover plate slightly; Two spacing is greater than the width of to be measured support, less than the width of armature, and 2 of the front and back of last jacking block can push armature on the side direction of the front and back of to be measured support.Side prolongs, stretches out clamping mechanism, as adjusting handle, so that the position of jacking block on the manual adjustments before or after the last jacking block bottom.
Also has fixed head on the said backing plate, so that the two level of cover plate and seat board and keep suitable distance.
The relative oriented projecting inward pressure tooth of one side in said briquetting upper end when the briquetting upper end closes up, when clamping UUT, presses tooth pressure on a sheet of to be measured, locks to be measured, makes it more stable.
The elasticity control gear comprises locating piece, base plate, depression bar, power spring and push rod, and locating piece places on the base plate, and there is relative mesopore at the two middle part; The mesopore of base plate is less than the mesopore of locating piece; The lower diameter in the spring base outside forms step less than top, and the spring base bottom is inserted in the mesopore of base plate, upper shelf on the base plate mesopore, be in the mesopore of locating piece; Be power spring and push rod on the spring base, power spring connects spring base and push rod.The push rod top is mutually neat with the locating piece surface.The pressure shaft that level is arranged on the base plate, the depression bar middle part is porose, and pressure shaft passes the hole of depression bar rotationally, and depression bar the inner is in the spring base bottom, and the base plate and the locating piece outside are stretched out in the depression bar outer end.The seat board of clamping mechanism is positioned in the locating slot of locating piece of elasticity control gear; The push rod top of elasticity control gear be in clamping mechanism jacking block under, promptly the centerline of the push rod of the jacking block of clamping mechanism and elasticity control gear, power spring, spring base is on same straight line.
Clamping mechanism can be fixed in elasticity control gear top, and the two becomes one, and perhaps clamping mechanism and elasticity control gear are 2 individual components that cooperatively interact.
When clamping mechanism and elasticity control gear are the individual components that matches; Elasticity control gear locating piece upper surface has locating slot; The shape of locating slot matches with the seat board of clamping mechanism, one side locating slot is gap, the seat board of being convenient to clamping mechanism slips in the locating slot.The bolt that locating slot one side has level to screw in, the seat board of clamping mechanism screw in bolt after packing in the locating slot, are butted on fixedly clamping mechanism of seat board thereby make it the bottom.
The base plate of elasticity control gear is fixed on the base.
The dial gauge fixed mount has vertical support frame rotatable and that move up and down, and horizontal stand is installed on the vertical support frame top movably, and dial gauge is installed on horizontal stand one end.Vertical support frame and horizontal stand respectively have lock nut locking.Rotation through vertical support frame and moving up and down, moving horizontally of horizontal stand can make the dial gauge gauge outfit aim to be measured armature easily, promptly locks with lock nut after the adjusting.
In order to be applicable to different relay electro-magnetic system parts; This electromagnetic relay end play pick-up unit can be designed to horizontal direction and measure; Be that the dial gauge level is installed on base; Its gauge outfit level is towards the clamping mechanism of a side, and clamping mechanism and elasticity control gear all are installed on base, and the centerline of the push rod of the jacking block of clamping mechanism and elasticity control gear, power spring, spring base is on same horizontal line.
The method of application of electromagnetic relay end play pick-up unit of the present invention is following:
I, the outer end of pushing clamping mechanism two slide blocks simultaneously inwardly, slide block is oppressed the lower end of two briquettings, and two briquettings are rotated around the briquetting rotating shaft, and two briquetting the first half are opened to both sides, on the jacking block that to be measured places clamping mechanism cover plate center.Unclamp slide block, spring pushes briquetting and resets, briquetting upper end closes up, and clamps to be measured;
II, regulate the dial gauge fixed mount, make the gauge outfit bottom of dial gauge touch to be measured armature upper end, rely on dial gauge gauge outfit elastic force that armature is pushed, make it to move to below, this moment, the reading with dial gauge made zero;
III, the outer end of pressing compression elasticity control gear depression bar; Power spring is upwards compressed in its inner; The axial force that power spring makes progress passes to the jacking block of clamping mechanism through push rod, armature lower end in top on the jacking block, and armature moves up; Its upper end pushes the dial gauge gauge outfit, and this moment, the dial gauge reading was to be measured an end play numerical value.
The advantage of electromagnetic relay end play pick-up unit of the present invention and method of application is: 1, the clamping mechanism volume is little, and is simple to operate, relies on spring force can lock miniature to be measured easily and reliably; 2, the elasticity control gear relies on power spring transition top power, the satisfied armature that pushes of its spring force, but less than the power that makes the supporting structure distortion.Batch detection, top power is unified, and nobody is a factor affecting to guarantee testing process, fast and accurately; 3, adopt widely used dial gauge, convenient reading is accurate; 4, detecting operation is simple, and operating personnel need not special experience, is easy to apply.
(4) description of drawings
Fig. 1 is this electromagnetic relay end play pick-up unit embodiment 1 one-piece construction synoptic diagram;
Fig. 2 is that to be measured of electromagnetic relay electromagnetic system amplifies axle survey synoptic diagram;
Fig. 3 looks synoptic diagram for to be measured structure for amplifying master of electromagnetic relay electromagnetic system;
Fig. 4 is a clamping mechanism axonometric drawing among this electromagnetic relay end play pick-up unit embodiment 1;
Fig. 5 is Fig. 4 clamping mechanism front elevation;
Fig. 6 is the A-A sectional view of Fig. 5;
Fig. 7 is Fig. 4 clamping mechanism vertical view;
Fig. 8 is an elasticity control gear structural representation among Fig. 1;
Fig. 9 is an elasticity control gear schematic top plan view among Fig. 1;
Figure 10 is the dial gauge fixed rack structure synoptic diagram among Fig. 1;
Figure 11 is this electromagnetic relay end play pick-up unit embodiment 2 structure front elevational schematic;
Figure 12 is this electromagnetic relay end play pick-up unit embodiment 2 structure schematic top plan view.
The figure internal label is: 00, to be measured, and 01, support, 02, armature, 03, a sheet, 04, little axle, 1, base; 11, support installation tube, 21, vertical support frame, 211, lock nut down, 22, horizontal stand, 221, go up lock nut, 2, dial gauge; 3, clamping mechanism, 31, seat board, 32, backing plate, 33, fixed head, 34, slide block, 341, register pin, 35, go up jacking block; 351, go up the jacking block adjusting handle, 36, cover plate, 37, briquetting, 371, spring, 372, the briquetting rotating shaft; 38, following jacking block, 4, the elasticity control gear, 41, base plate, 42, depression bar, 43, the power spring seat; 44, power spring, 441, power spring regulates bolt, 45, push rod, 46, locating piece, 461, bolt.
(5) embodiment
Electromagnetic relay end play pick-up unit embodiment 1
This electromagnetic relay end play pick-up unit embodiment 1 base 1, dial gauge 2, clamping mechanism 3 and elasticity control gear 4 of comprising as shown in Figure 1.
The dial gauge fixed mount is shown in figure 10, includes vertical support frame 21, horizontal stand 22.Be fixed with support installation tube 11 on the base 1; Vertical support frame 21 lower ends are inserted in the installation tube 11, and vertical support frame 21 can move up and down or rotate in installation tube 11, and following lock nut 211 is arranged on the installation tube 11; After vertical support frame 21 was regulated, following lock nut 211 can be with its locking positioning.There is mounting hole vertical support frame 21 upper ends, and horizontal stand 22 is inserted in this mounting hole, can move horizontally, and there is last lock nut 221 vertical support frame 21 upper ends, and after horizontal stand 21 was regulated, last lock nut 221 can be with its locking positioning.Dial gauge 2 is installed on horizontal stand 22 1 ends, and gauge outfit vertically downward.
This pick-up unit is the armature component that is used to detect the electromagnetic relay electromagnetic system; To be measured 00 structure is like Fig. 2, shown in 3, and armature 02 is installed on the little axle 04, can rotate around little axle 04; Little axle be fixed in for 04 time support 01, on be fixed in a sheet 03; There are the gap in armature 02 upper and lower side and sheet 03,01 on support, inevitable play vertically in armature 02 rotation process, and this is to be measured 00 a end play.
Clamping mechanism comprises seat board 31, cover plate 36, slide block 34, briquetting 37 and jacking block shown in Fig. 4 to 7, be followed successively by backing plate 32, fixed head 33 and cover plate 36 on the said seat board 31, and cover plate 36 is with seat board 31 the two level and keep suitable distance.
Said jacking block is divided into jacking block 35 and following jacking block 38; Following jacking block 38 is a U-shaped; The bottom of U-shaped is in the central through hole of seat board 31; Its 2 arm passes the backing plate 32 and fixed head 33 on the seat board 31, and following jacking block 38 both arms upper end joins with last jacking block 35 bottom surfaces, and last jacking block 35 tops are divided into relative two in front and back and stretch out cover plate 36 slightly; Two spacing is greater than the width of to be measured 00 support 01, less than the width of armature 02, and the front and back of last jacking block 35 bottoms respectively have adjusting handle 35 to stretch out the front and back sides of clamping mechanism 3.
The oriented projecting inward pressure tooth of one side that said briquetting 37 upper ends are relative, when briquetting 37 upper ends close up, clamp to be measured 00 o'clock, press tooth pressure on a sheet 03 of to be measured 00, lock to be measured 00.
In order to regulate the length of elastic spring 44, porose at push rod 45 centers so that obtain suitable elastic force during moulded rod 42 down, power spring is regulated bolt 441 and is passed push rod 45 and screw in the center screw of spring base 43 with power spring 44, lower end.Regulate the length of bolt 441 scalable power springs 44 with power spring, thereby regulate the satisfied armature that pushes of its spring force, but less than the power that makes the supporting structure distortion.
Clamping mechanism that this is routine and elasticity control gear are 2 individual components that cooperatively interact.
Locating piece 46 upper surfaces of elasticity control gear 4 have locating slot, and the shape of locating slot matches with the seat board 31 of clamping mechanism 3, one side locating slot is gap, the seat board 31 of being convenient to clamping mechanism 3 slips in the locating slot.The bolt 461 that locating slot one side has level to screw in, the seat board 31 of clamping mechanism 3 screw in bolt 461 after packing in the locating slot, make it the bottom and are butted on seat board 31, fixing clamping mechanism 3.
The base plate 41 of elasticity control gear 4 by bolt on base 1.
Electromagnetic relay end play pick-up unit embodiment 2
This routine electromagnetic relay end play pick-up unit is like Figure 11, shown in 12; For horizontal direction is measured; Be that dial gauge 2 levels are installed on base 1, its gauge outfit level is towards the clamping mechanism 3 of a side, and clamping mechanism 3 is fixed in elasticity control gear 4; The two all is installed on base 1 for one, and the centerline of the push rod 45 of the jacking block of clamping mechanism 3 and elasticity control gear 4, power spring 44, spring base 43 is on same horizontal line.The method of application embodiment 1 of electromagnetic relay end play pick-up unit
I, while be the outer end of pushing clamping mechanism 3 two slide blocks 34 inwardly; The lower end of slide block 34 compressings two briquettings 37; Two briquettings 37 are rotated around briquetting rotating shaft 372, and two briquettings, 37 the first half are opened to both sides, on the jacking block that places clamping mechanism 3 cover plates 36 centers for to be measured 00.Unclamp slide block 34, spring pushes briquetting 37 and resets, briquetting 37 upper ends close up, and clamp to be measured 00;
II, regulate the dial gauge fixed mount, make the gauge outfit bottom of dial gauge 2 touch to be measured 00 armature 02 upper end, rely on dial gauge 2 gauge outfit elastic force that armature 02 is pushed, make it to move to below, this moment, the reading with dial gauge 2 made zero;
III, the outer end of pressing compression elasticity control gear 4 depression bars 42; Power spring 44 is upwards compressed in its inner; The axial force that power spring 44 makes progress passes to the jacking block of clamping mechanism 3 through push rod 45, armature 02 lower end in top on the jacking block, and armature 02 moves up; Its upper end pushes dial gauge 2 gauge outfits, and this moment, dial gauge 2 readings were to be measured 00 end play numerical value.
The foregoing description is merely concrete example to the object of the invention, technical scheme and beneficial effect further explain, and the present invention is defined in this.All any modifications of within scope of disclosure of the present invention, being made, be equal to replacement, improvement etc., all be included within protection scope of the present invention.
Claims (10)
1. electromagnetic relay end play pick-up unit comprises base (1), dial gauge (2), clamping mechanism (3), it is characterized in that:
Also flexible control gear (4); Elasticity control gear (4) is installed on the base (1), and clamping mechanism (3) is installed on the gauge outfit below that dial gauge (2) was gone up, was positioned to elasticity control gear (4);
Clamping mechanism comprises seat board (31), cover plate (36), slide block (34), briquetting (37) and jacking block, and said seat board (31) is parallel with cover plate (36) and keep at a distance; The jacking block bottom is in center pit, the top of seat board (31) bottom surface and stretches out slightly from cover plate (36) middle part; Cover plate (36) below, jacking block (35) both sides are equipped with the briquetting rotating shaft (372) of two levels; Briquetting (37) middle part is porose; The hole at 2 briquettings (37) middle part is passed in two briquetting rotating shafts (372) respectively rotationally; Cover plate (36) has 2 briquetting holes in the jacking block left and right sides, the briquetting hole is stretched out in 2 briquettings (37) upper end; 2 briquettings (37) lower end has spring (371) to interconnect; There are 2 vertical register pins (341) in the outside about 2 briquettings (37); Register pin (341) two ends up and down is fixed in seat board (31) and cover plate (36); There is waist shape chute at slide block (34) center, two slide blocks (34) be positioned at 2 briquettings (37) lower end about the outside, register pin (341) is inserted in its waist shape chute; The inner of slide block (34) is butted on the lateral surface of 2 briquettings (37) lower end, and stretch out outside cover plate (36) and the seat board (31) outer end of slide block (34); When not stressing, two briquettings (37) upper ends relatively, spacing is less than to be measured (00) external diameter; The inside outer end of pushing two slide blocks (34), two briquettings (37) the first half to both sides open, the spacing of upper end is greater than to be measured (00) external diameter;
Elasticity control gear (4) comprises locating piece (46), base plate (41), depression bar (42), power spring (44) and push rod (45); Locating piece (46) is fixed on the base plate (41); There is relative mesopore at the two middle part, and the mesopore of base plate (41) is less than the mesopore of locating piece (46), and the lower diameter in spring base (43) outside forms step less than top; Spring base (43) bottom is inserted in the mesopore of base plate (41); Upper shelf on base plate (41) mesopore, be in the mesopore of locating piece (41), spring base (43) is gone up and to be power spring (44) and push rod (45), power spring (44) connects spring base (43) and push rod (45); The pressure shaft that level is arranged on the base plate (41), depression bar (42) middle part is porose, and pressure shaft passes the hole of depression bar (42) rotationally, and depression bar (42) the inner is in spring base (43) bottom, and locating piece (46) outside is stretched out in depression bar (42) outer end;
The seat board (31) of clamping mechanism (3) is positioned on the locating piece (46) of elasticity control gear (4); Push rod (45) top of elasticity control gear (4) be in clamping mechanism (3) jacking block under, the centerline of the push rod (45) of the jacking block of clamping mechanism (3) and elasticity control gear (4), power spring (44), spring base (43) is on same straight line.
2. electromagnetic relay end play pick-up unit according to claim 1 is characterized in that:
The jacking block of said clamping mechanism (3) is divided into jacking block (35) and following jacking block (38), and following jacking block (38) is a U-shaped, and the bottom of U-shaped is in seat board, and (in 31 the central through hole, its 2 arm upper end joins with last jacking block (35) bottom surface, and cover plate (36) is stretched out on last jacking block (35) top slightly.
3. electromagnetic relay end play pick-up unit according to claim 2 is characterized in that:
Said jacking block (35) top before and after being divided into relative two of going up, two spacing is greater than the width of to be measured (00) support (01), less than the width of armature (02).
4. electromagnetic relay end play pick-up unit according to claim 2 is characterized in that:
Said front side of going up jacking block (35) bottom and/or rear side have adjusting handle (35) stretch out clamping mechanism (3) before or after the side.
5. according to each described electromagnetic relay end play pick-up unit in the claim 1 to 4, it is characterized in that:
The oriented projecting inward pressure tooth of one side that said briquetting (37) upper end is relative.
6. according to each described electromagnetic relay end play pick-up unit in the claim 1 to 4, it is characterized in that:
Push rod (45) center of said elasticity control gear (4) is porose, and power spring adjusting bolt (441) passes push rod (45) and power spring (44), lower end screw in the center screw of spring base (43).
7. according to each described electromagnetic relay end play pick-up unit in the claim 1 to 4, it is characterized in that:
Said clamping mechanism (3) and elasticity control gear (4) 2 individual components for cooperatively interacting;
Locating piece (46) upper surface of elasticity control gear (4) has locating slot, and the shape of locating slot matches with the seat board (31) of clamping mechanism (3), the bolt (461) that locating slot one side has level to screw in.
8. according to each described electromagnetic relay end play pick-up unit in the claim 1 to 4, it is characterized in that:
The dial gauge fixed mount includes vertical support frame (21), horizontal stand (22); Be fixed with support installation tube (11) on the base (1), vertical support frame (21) lower end is inserted in the installation tube (11), and following lock nut (211) is arranged on the installation tube (11); There is mounting hole vertical support frame (21) upper end, and horizontal stand (22) is inserted in this mounting hole, and vertical support frame (21) upper end has last lock nut (221), dial gauge (2) to be installed on horizontal stand (22) one ends, and gauge outfit vertically downward.
9. according to each described electromagnetic relay end play pick-up unit in the claim 1 to 4, it is characterized in that:
Said dial gauge 2 levels are installed on base (1); Its gauge outfit level is towards the clamping mechanism (3) of a side; Clamping mechanism (3) is fixed in elasticity control gear (4); The two all is installed on base (1) for one, and the centerline of the push rod (45) of the jacking block of clamping mechanism (3) and elasticity control gear (4), power spring (44), spring base (43) is on same horizontal line.
10. according to the method for application of each described electromagnetic relay end play pick-up unit in the claim 1 to 4, it is characterized in that using step following:
I, while be the outer end of pushing clamping mechanism (3) two slide blocks (34) inwardly; The lower end of slide block (34) compressing two briquettings (37); Two briquettings (37) are rotated around briquetting rotating shaft (372); Two briquettings (37) the first half is opened to both sides, and to be measured (00) places on the jacking block at clamping mechanism (3) cover plate (36) center; Close up on unclamping slide block (34), briquetting (37), clamp to be measured (00);
II, regulate the dial gauge fixed mount, make the gauge outfit bottom of dial gauge (2) touch armature (02) upper end of to be measured (00), rely on dial gauge (2) gauge outfit elastic force that armature (02) is pushed, make it to move to below, this moment, the reading with dial gauge (2) made zero;
III, the outer end of pressing compression elasticity control gear (4) depression bar (42), top armature (02) lower end on the jacking block, armature (02) moves up, and its upper end pushes dial gauge (2) gauge outfit, and this moment, dial gauge (2) reading was the end play numerical value of to be measured (00).
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| CN201010590421.6A CN102538635B (en) | 2010-12-15 | 2010-12-15 | Axial clearance detection device for electromagnetic relay and using method |
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| CN201010590421.6A CN102538635B (en) | 2010-12-15 | 2010-12-15 | Axial clearance detection device for electromagnetic relay and using method |
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| CN107966089A (en) * | 2017-11-29 | 2018-04-27 | 陕西航空电气有限责任公司 | A kind of fixture for detecting axial clearance of motor |
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