CN209539535U - A kind of pump inductance type signal supervisory instrument and its connection structure - Google Patents
A kind of pump inductance type signal supervisory instrument and its connection structure Download PDFInfo
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- CN209539535U CN209539535U CN201920340753.5U CN201920340753U CN209539535U CN 209539535 U CN209539535 U CN 209539535U CN 201920340753 U CN201920340753 U CN 201920340753U CN 209539535 U CN209539535 U CN 209539535U
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Abstract
The utility model relates to a kind of pump inductance type signal supervisory instruments and its connection structure, device includes outer sleeve body, slidable connection has transmission lever in outer sleeve body, one end of transmission lever is signal triggering end, and the other end is mechanical contact end for contacting and making transmission lever mobile towards its signal triggering end with measurand；Outer sleeve body is equipped with inductance type transducer corresponding with signal triggering end to trigger the inductance type transducer when transmission lever is mobile towards its signal triggering end；Return mechanism is equipped between outer sleeve body and transmission lever so that transmission lever is maintained at the initial, set position for not triggering inductance type transducer when its mechanical contact end is not contacted with measurand.The utility model much sooner, accurately can with true and reliable reflect the specific position situation of measurand, effectively improve working life, reduce whole space hold, and environment applicatory and range are wider.
Description
Technical field
The utility model belongs to hydraulic diaphragm pump key technology area, and in particular to a kind of pump inductance type signal detection dress
It sets and its connection structure.
Background technique
Include hydraulic system on the water pump of part, as disclosed in CN109139434A, CN102562549A, when in use, needs
Will the specific position to movement parts therein detect and the corresponding realization for outputting signals to subsequent action, due to whole system
Structural factor of uniting and complexity, currently used is the signal generator of magnetic induction sensor mode, structure such as 1 institute of attached drawing
Show, magnet ring 102 is assembled on measurand guide rod 1, and guide rod 1 is assemblied in hydraulic chamber 5 and moves reciprocatingly；Magnetic induction passes
Sensor 107 is assemblied in signal box and traps in 106, then together in signal back box 105, and traps 106 and signal in signal box
Heat-resisting glue 103 is injected between back box 105；Signal box is trapped 106 100 to be assembled together with set on signal box, and assembles together
In pressure-bearing signal box 108；Entire signal generator is assemblied in together on the side wall of hydraulic chamber 5, and control with guide rod 1 it
Between distance a to avoid interference, control magnetic induction distance L.
In use, it is found that existing signal generator has the disadvantage that
1, since magnetic induction sensor 107 and magnet ring 102 are to incude work by the variation of contactless magnetic field, in liquid
It presses in chamber, movement velocity, the flow behavior of hydraulic oil of guide rod 1 can all influence magnet ring 102 and magnetic induction sensor 107
Distance of reaction L, i.e., when each magnet ring 102 incudes with magnetic induction sensor 107, all there is a biggish variation model in L value
It encloses, is not a fixed value, cause to incude the actual position situation that cannot reflect movement parts guide rod 1 accurately and in time every time.
2, since magnet ring 102 is that magnetic material is made into, magnetic field can work as magnetic field because the factors such as temperature, vibration change
When reduction change occurs, distance of reaction L can also change, and deviate initial designs, the guide rod 1 that thus cannot really reflect
Specific position.
3, magnetic induction sensor 107 is mostly normal temperature and pressure type, it is therefore desirable to protect it with pressure-bearing signal box 108, pressure-bearing
Narrow space in signal box 108, magnetic induction sensor 107 at work itself can also generate heat, if in high temperature hydraulic medium because
Heat transfer but will aggravate the temperature in pressure-bearing signal box 108 raising, and then influence magnetic induction sensor 107 working life and its
Detect reliability.
4, when above-mentioned apparatus is applied in higher magnetic field environment, each distance of reaction L will become more uncontrollable, can
It is substantially reduced by property, timeliness, accuracy.
5, since magnet ring 102 and magnetic induction sensor 107 are non-contact inductives, it is necessary to have magnetic induction distance L, therefore
Integrally-built bulk is increased in the direction of motion of guide rod 1.
Summary of the invention
For the above-mentioned deficiency of the prior art, the technical problem to be solved by the present invention is to provide a kind of pump inductance types
Signal supervisory instrument and its connection structure, much sooner, accurately with true and reliable to reflect the certain bits of measurand
Situation is set, and improves working life, reduces space hold.
In order to solve the above technical problems, the utility model adopts the following technical solution:
A kind of pump uses inductance type signal supervisory instrument, including outer sleeve body, and slidable connection has transmission lever in outer sleeve body, described
One end of transmission lever is signal triggering end, and the other end is mechanical contact end for contacting with measurand and making transmission lever direction
Its signal triggering end is mobile；Outer sleeve body is equipped with inductance type transducer corresponding with the signal triggering end in transmission lever direction
Its signal triggering end triggers the inductance type transducer when mobile；Return mechanism is equipped between outer sleeve body and transmission lever so that transmitting
Bar is maintained at the initial, set position for not triggering inductance type transducer when its mechanical contact end is not contacted with measurand.
Above-mentioned technical proposal is further improved, the signal triggering end of transmission lever is connected with displacement amplifying mechanism in transmission lever
Inductance type transducer is triggered by the displacement amplifying mechanism when mobile towards its signal triggering end；The displacement amplifying mechanism packet
Revolution sensor block is included, revolution sensor block is rotatably connected by the signal triggering end of power transmission pin and transmission lever, and revolution sensor block is logical
It crosses fulcrum post and outer sleeve body is rotatably connected and using fulcrum post as the centre of gyration, the axis of the axis of power transmission pin perpendicular to transmission lever
The axis of line, power transmission pin and fulcrum post be parallel to each other with when transmission lever is moved axially by power transmission pin make turn round sensor block with
Fulcrum post is centre of gyration rotation；The revolution sensor block has triggering end face and its vertical range for triggering end face to fulcrum post
Greater than the vertical range of power transmission pin to fulcrum post；The inductance type transducer and the revolution triggering end face of sensor block are corresponding to touch
Originator face is triggered when entering its induction region.
Further, the triggering end face is cylinder so that revolution sensor block its triggering distance during rotating triggering
Unanimously.
Further, the corresponding position of the signal triggering end for the transmission lever that power transmission pin passes through is kidney-shaped through slot, power transmission pin
Diameter is corresponding with the fluting groove width of kidney-shaped through slot, the axis and power transmission pin of the slotting length direction of kidney-shaped through slot perpendicular to transmission lever
Axis.
Further, the outer sleeve body includes the sequentially connected sealing signal box of axial direction along transmission lever, upper set and traps,
The sealing signal box is the chamber structure of open at one end and seals fastening, the biography by the corresponding end of its open end and upper set
Pass bar and upper set and slidable connection of trapping；The revolution sensor block is located in sealing signal box to guarantee that enough revolutions are empty
Between, the signal triggering end of transmission lever extend into sealing signal box with turn round sensor block and connect, upper set is towards sealing signal box
Induction block is fixedly connected on the inner wall of end face or sealing signal box, revolution sensor block passes through fulcrum post and the induction block
It is rotatably connected；The inductance type transducer is connected on sealing signal box.
Further, the return mechanism is helical compression spring；It above covers towards the end face trapped and is equipped with recessed heavy platform, pass
The outer circumference surface for passing bar is equipped with a circle flange, the heavy platform is coaxial with transmission lever and its internal diameter greater than the flange outer diameter,
The helical compression spring is covered in transmission lever and is compressed between the bottom surface of the heavy platform and the flange, the flange it is another
End face and trapping is abutted against towards the end face of upper set using as the initial, set position.
Further, perforative weighing apparatus pressure hole is offered on the side wall of the heavy platform, outside the transmitting rod segment in the upper set
Weighing apparatus indent is offered on periphery, weighing apparatus pressure hole is connected to by the weighing apparatus indent with the inner cavity of sealing signal box.
Further, the mechanical contact end of transmission lever, which is extended, traps, and the mechanical contact end is hemispherical dome structure or leads to
Cross the rolling bearing that rotational pin is connected to transmission lever end；System, which is connected with, on the upper set or the side wall trapped turns bolt, it is described
The inner end that system turns bolt stretches in the turn trough processed opened up on the outer circumference surface of transmission lever, axial direction of the turn trough processed along transmission lever
It opens up and has certain length to avoid the axial movement of interference transmission lever, the inner end that the system turns bolt is protruded into turn trough processed
Part is light cylindrical-shaped structure and diameter is corresponding with the groove width of turn trough processed to play the role of preventing transmission lever from rotating.
The utility model further relates to a kind of connection structure of pump inductance type signal supervisory instrument, including hydraulic chamber and upper
A kind of pump inductance type signal supervisory instrument stated, outer sleeve body pass through the side wall of hydraulic chamber and seal with the side wall of hydraulic chamber
Connection, the mechanical contact end of transmission lever are located in hydraulic chamber, and inductance type transducer is located at outside hydraulic chamber, the hydraulic chamber
The interior guide rod having as measurand, the guide rod is axial reciprocating along itself, one end of guide rod and the mechanical touching
Head end is corresponding to pass through the mechanical contact end in contact at the end and transmission lever and keep transmission lever mobile towards its signal triggering end.
Further, the axis of transmission lever and the axis of guide rod are mutually perpendicular to；Guide rod is corresponding with the mechanical contact end
One end is equipped with taper to pass through the mechanical contact end in contact of the taper and transmission lever and move transmission lever towards its signal triggering end
It is dynamic.
Compared with prior art, the utility model has the following beneficial effects:
1, the utility model uses the theory structure entirely different with existing testing principle, realizes Mechatronics control
Mode；The control principle and apparatus structure at detection " movement parts arrival specific position ", have signal it is true and reliable, it is accurate and
When, the characteristics of repetitive accuracy is high, high sensitivity.
2, the utility model belongs to the electrical integrated position detection sensing device of contact type off-machine, subtracts in the movement parts direction of motion
Small spatial constructional dimensions, are more advantageous to the use of small structure space size.
3, the inductance type electric elements that the utility model uses belong to external part, are located at outside, during operation and maintenance
It is convenient and efficient, at low cost, especially in the hydraulic media environment of high temperature, it is more advantageous to the heat dissipation of electric elements, and then raising makes
Use the service life.
4, the control principle and apparatus structure that the utility model uses applicable environment and range are wider.
Detailed description of the invention
The structure and connection schematic diagram of Fig. 1-signal generator in the prior art；
A kind of structural schematic diagram of pump inductance type signal supervisory instrument of Fig. 2-embodiment one；
Transmission lever opens up weighing apparatus indent position cross section and the schematic diagram of alternative forms structure (2:1 is put in Fig. 3-embodiment one
Greatly)；
A kind of structural schematic diagram of pump inductance type signal supervisory instrument of Fig. 4-embodiment two；
The attachment structure schematic diagram (2:1 amplification) of transmission lever mechanical contact end rolling bearing in Fig. 5-embodiment two；
A kind of structural schematic diagram of pump inductance type signal supervisory instrument of Fig. 6-embodiment three；
A kind of schematic diagram of Fig. 7-example IV pump inductance type signal supervisory instrument connection structure；
A kind of schematic diagram of pump inductance type signal supervisory instrument connection structure of Fig. 8-embodiment five；
Wherein, 100 are covered on signal box, magnet ring 102, glue 103, signal back box 105, signal box traps 106, and magnetic induction passes
Sensor 107, pressure-bearing signal box 108,
Guide rod 1, rotational pin 2, rolling bearing 3 trap 4, hydraulic chamber 5, helical compression spring 6, upper set 7, heavy platform 71, weighing apparatus pressure hole
72, transmission lever 8, signal triggering end 81, mechanical contact end 82, flange 83, weigh indent 84, flat 85, kidney-shaped through slot 86, turn trough processed
87, power transmission pin 9, sealing signal box 10 turns round sensor block 11, triggers end face 111, vent valve 12, inductance type transducer 13, sensing
Device seat 14, sealant 15 incude block 16, fulcrum post 17, and system turns bolt 18, taper 19.
Specific embodiment
Specific embodiment of the present utility model is described in further detail with reference to the accompanying drawing.
Embodiment one
Referring to fig. 2, a kind of pump inductance type signal supervisory instrument of embodiment one, including outer sleeve body can be slided in outer sleeve body
Dynamic to be connected with transmission lever 8, one end of the transmission lever 8 is signal triggering end 81, the other end be mechanical contact end 82 with for
Measurand contacts and keeps transmission lever 8 mobile axially towards its signal triggering end 81；Outer sleeve body is equipped with to be touched with the signal
81 corresponding inductance type transducers 13 start to trigger the electricity when transmission lever 8 is mobile axially towards its signal triggering end 81
Sensing type sensor 13；Between outer sleeve body and transmission lever 8 be equipped with return mechanism so that transmission lever 8 its mechanical contact end 82 not with quilt
The initial, set position for not triggering inductance type transducer 13 is maintained at when surveying object contact.The outer sleeve body includes along transmission lever 8
The sequentially connected sealing signal box 10 of axial direction, upper set 7 and trap 4, the sealing signal box 10 is the chamber knot of open at one end
Structure simultaneously seals fastening by the corresponding end of its open end and upper set 7, is bolted, bolt passes through the side of sealing signal box 10
Wall is threadedly coupled with upper set 7,4 other ends for being connected to set 7 of trapping, and by uniformly distributed centered on the axis of transmission lever 8
Several to be bolted, bolt passes through 4 side wall of trapping and is threadedly coupled with upper set 7；The transmission lever 8 is slidably fitted to set 7
With trap in 4；The signal triggering end 81 of transmission lever 8 extends into sealing signal box 10, and the inductance type transducer 13 passes through biography
Sensor seat 14 is connected on sealing signal box 10, and axis intersects and vertical with the axis of transmission lever 8；It uses at 14 both ends of sensor holder
Oil resistant heatproof sealant 15 cementation inductance type transducer 13；Vent valve 12 is additionally provided on sealing signal box 10；The return machine
Structure is helical compression spring 6；Above set 7 is equipped with recessed heavy platform 71 towards 4 end face of trapping, and the outer circumference surface of transmission lever 8 is equipped with
One circle flange 83, the heavy platform 71 is coaxial with transmission lever 8 and outer diameter of its internal diameter greater than the flange 83, the helical compression spring 6
Between the bottom surface and the flange 83 for covering in transmission lever 8 and being compressed in the heavy platform 71, under the active force of helical compression spring 6
The other end of the flange 83 and trapping 4 is abutted against towards the end face of upper set 7 using as the initial, set position, this implementation
In example, 4 are trapped towards also protrusion has a circle annular convex platform and protrudes into the heavy platform 71, the flange 83 on the end face of upper set 7
Abutted against with the annular convex platform, the effect of annular convex platform be in assembly for be positioned to assure that upper set 7 and trap 4 inner hole
Concentricity.Perforative weighing apparatus pressure hole 72,8 sections of transmission lever of outer circle in the upper set 7 are offered on the side wall of the heavy platform 71
Weighing apparatus indent 84 is offered on circumferential surface, the weighing apparatus indent 84 opens up along the axial direction of transmission lever 8 and believes weighing apparatus pressure hole 72 and sealing
The inner cavity connection of number box 10.When implementation, in the case where covering 7 intensity in guarantee, multiple, weighing apparatus pressure hole 72 is can be set in weighing apparatus pressure hole 72
And sealing signal box 10 inner cavity connection it is practical be exactly gap between 8 sections of transmission lever in inner wall and upper set 7 by upper set 7
It, can be by the way of cooling down, in the present embodiment come what is realized, i.e., 8 sections of part transmission lever of outer diameter is less than the internal diameter of upper set 7
With reduce weighing apparatus indent 84 slotting length, retain 8 sections of part transmission lever outer diameter it is corresponding with the internal diameter of upper set 7 with guarantee position and
Guide effect is slided, while can reduce force of sliding friction, weighing apparatus indent 84 is opened up on 8 sections of the part transmission lever of outer circumference surface
, the quantity of weighing apparatus indent 84 is also possible to uniformly distributed several of equal part, and the form for the indent 84 that weighs can also be using flat 85
Form replaces, referring to Fig. 3, as long as reaching has arc section to guarantee that positioning is guided with there is gap and guarantee be connected to two functions effects
Fruit.The mechanical contact end 82 of transmission lever 8, which is extended, traps 4, and the mechanical contact end 82 is hemispherical dome structure.
Embodiment two
Referring to fig. 4, Fig. 5, embodiment is second is that advanced optimizing on the basis of embodiment one.
The signal triggering end of transmission lever 8 is connected with displacement amplifying mechanism to move in transmission lever 8 towards its signal triggering end 81
Inductance type transducer 13 is triggered by the displacement amplifying mechanism when dynamic；The displacement amplifying mechanism includes revolution sensor block 11,
The revolution sensor block 11 is located in sealing signal box 10 to guarantee that enough rotary spaces, revolution sensor block 11 pass through power transmission pin
9 are rotatably connected with the signal triggering end 81 of transmission lever 8, and revolution sensor block 11 can be turned by fulcrum post 17 with sealing signal box 10
Dynamic connection and be the centre of gyration with fulcrum post 17, the axis of the axis of power transmission pin 9 perpendicular to transmission lever 8, power transmission pin 9 and fulcrum post
17 axis is parallel to each other to pass through power transmission pin 9 when transmission lever 8 moves axially and make to turn round sensor block 11 with fulcrum post 17
Centre of gyration rotation；It is described revolution sensor block 11 have triggering end face 111 and its trigger end face 111 to fulcrum post 17 it is vertical away from
From the vertical range greater than power transmission pin 9 to fulcrum post 17 to guarantee amplification effect；The inductance type transducer 13 incudes with revolution
The triggering end face 111 of block 11 is corresponding to be triggered when triggering end face 111 and entering its induction region, in the present embodiment, inductance type
The axis of sensor 13 is parallel with the axis of transmission lever 8, and intersects with the axis of fulcrum post 17.The triggering end face 111 is column
Face so that revolution sensor block 11 its triggering distance during rotating triggering is consistent, i.e., the face to inductance type transducer 13 away from
From consistent, the straight edge line of cylinder is parallel with the axis of fulcrum post 17, and the directrix of cylinder is one section of circular arc, and the center of circle of circular arc is being turned round
On the axis of pin 17.The corresponding position of the signal triggering end 81 for the transmission lever 8 that power transmission pin 9 passes through is kidney-shaped through slot 86, power transmission pin 9
Diameter it is corresponding with the fluting groove width of kidney-shaped through slot 86, the axis of the slotting length direction of kidney-shaped through slot 86 perpendicular to transmission lever 8
With the axis of power transmission pin 9, kidney-shaped through slot 86 can guarantee turn round sensor block 11 rotatably, meanwhile, the diameter of power transmission pin 9 with
The fluting groove width of kidney-shaped through slot 86 is corresponding, it is ensured that the axial movement of transmission lever 8 is changed into the rotation of revolution sensor block 11
Timeliness.
The mechanical contact end of transmission lever 8 is the rolling bearing 3 that 8 end of transmission lever is connected to by rotational pin 2, the rolling
The axis of the axis transmission lever 8 of bearing 3 intersects and is mutually perpendicular to；It is described trap 4 side wall on be connected with system and turn bolt 18, it is described
The inner end that system turns bolt 18 stretches in the turn trough processed 87 opened up on the outer circumference surface of transmission lever 8, and the turn trough processed 87 is along transmitting
The axial direction of bar 8 opens up and has certain length to avoid the axial movement of interference transmission lever 8, and the inner end that the system turns bolt 18 is stretched
Enter that part in turn trough 87 processed is light cylindrical-shaped structure and diameter is corresponding with the groove width of turn trough 87 processed prevents from transmitting to play
The effect that bar 8 rotates, it is corresponding, system turn between the inner end end face of bolt 18 and the bottom surface of turn trough processed 87 also to have certain interval with
Avoid interference with the axial movement of transmission lever 8.When implementation, system turns bolt 18 and the side wall in upper set 7 also can be set in turn trough 87 processed
On 8 sections of transmission lever in upper set 7, same effect is played.The effect that system turns bolt 18 and turn trough 87 processed is to guarantee the axis of rolling
3 and the angular relationship of measurand and the angular relationship of kidney-shaped through slot 86 and power transmission pin 9 are held, to ensure corresponding function effect
Fruit can reach.
Embodiment three
Referring to Fig. 6, embodiment is third is that advanced optimizing on the basis of embodiment two.
For the ease of connecting and reducing seal operation amount, upper set 7 is towards being fixedly connected on the end face of sealing signal box 10
Incude block 16, revolution sensor block 11 is rotatably connected by fulcrum post 17 with the induction block 16；In this way, fulcrum post 17 is long
Degree can shorten, without being connected on the wall of sealing signal box 10, convenient for connecting and not influencing sealing performance.When implementation, sense
It answers block 16 that can also be fixedly connected on the inner wall of sealing signal box 10, plays same effect.
Turn round type of attachment of the type of attachment similar to transmission lever 8 and rolling bearing 3 in Fig. 5 of sensor block 11, i.e. revolution sense
11 lower part of block is answered to extend there are two flank, the signal triggering end and revolution sensor block 11 of transmission lever 8 pass between two flanks
Power pin 9 and the correspondence of fulcrum post 17 are worn.
The utility model also provides a kind of connection structure of above-mentioned pump inductance type signal supervisory instrument.
Example IV
Referring to fig. 2, Fig. 7, a kind of pump connection structure of inductance type signal supervisory instrument, the present embodiment is using implementation
A kind of pump inductance type signal supervisory instrument of example one covers the side wall that 7 pass through hydraulic chamber 5 and the side with hydraulic chamber 5 thereon
Wall is tightly connected, and the mechanical contact end 82 and weighing apparatus pressure hole 72 of transmission lever 8 are located in hydraulic chamber 5, the signal triggering of transmission lever 8
End 81 and inductance type transducer 13 are located at outside hydraulic chamber 5, have the guide rod 1 as measurand, institute in the hydraulic chamber 5
It is axial reciprocating along itself to state guide rod 1, one end of guide rod 1 is corresponding with the mechanical contact end 82 to pass through the end and transmitting
The mechanical contact end 82 of bar 8 contacts and keeps transmission lever 8 mobile towards its signal triggering end 81.
When practicing, hydraulic medium is entered in sealing signal box 10 by weighing apparatus pressure hole 72, weighing apparatus indent 84, makes transmission lever
8 pressure at two ends is balance, and transmission lever 8 is avoided to receive uniaxial pressure, the i.e. pressure towards its signal triggering end 81, Ke Yibao
The mobile flexible and reliability of transmission lever 8 is demonstrate,proved, the requirement to return mechanism is reduced, the spring force of helical compression spring 6 is simplified without excessive
Structural requirement and space requirement.When installation, hydraulic medium is entered in sealing signal box 10 by weighing apparatus pressure hole 72, weighing apparatus indent 84,
It is deflated by vent valve 12, guarantees that hydraulic medium fills the inner space of full sealing signal box 10, ensure weighing apparatus pressure effect.
Embodiment five
Referring to Fig. 6, Fig. 8, a kind of pump connection structure of inductance type signal supervisory instrument, the present embodiment is using implementation
A kind of pump inductance type signal supervisory instrument of example three, in conjunction with the possible difference of construction of hydraulic chamber 5, embodiment five and implementation
Example four is not both that the axis of transmission lever 8 is to intersect and be mutually perpendicular to the axis of guide rod 1；Guide rod 1 and the mechanical contact end
82 corresponding one end are equipped with taper 19 to contact by the taper 19 with the mechanical contact end 82 of transmission lever 8 and make 8 court of transmission lever
It is mobile to its signal triggering end 81.This hydraulic chamber 5 and guide rod 1 construction is most commonly seen in practical applications, this structure
It can be effectively by the axial movement for the transmission lever 8 that the convert reciprocating motion of guide rail is vertical direction.
When guide rod 1 is to when the movement of diagram left side, rolling bearing 3 rolls on the face with taper 19 of guide rod 1, by guide rod
1 moves back and forth the vertical motion for being converted to transmission lever 8.Since the structure is purely mechanic movement conversion, there is no fortune every time
The variation and unstable situation of detection contact position when dynamic, contact position are fixed and invariable design value point, and detection guide rod 1 is transported
It is more stable, reliable when dynamic position.
When transmission lever 8 moves upwards, revolution sensor block 11 is driven to rotate clockwise along diagram direction, so that revolution sensor block
11 enter the induction region of inductance type transducer 13, thus promptly and accurately come out the specific position signal detection of guide rod 1.
In addition revolution sensor block 11 be a position enlarger, as long as therefore guide rod 1 to diagram the left side have slight movement variation all can
The triggering end face 111 of revolution sensor block 11 is driven to enter the induction region of inductance type transducer 13, therefore sensitivity is very high；Due to
The presence of helical compression spring 6, when guide rod 1 once separating with rolling bearing 3, transmission lever 8 drives revolution sensor block 11 to leave sense immediately
Region is answered, therefore can promptly and accurately reflect the truth of 1 specific position of guide rod；Detection triggers also much sooner, accurately.
Inductance type transducer 13 has applied to high temperature and pressure hydraulic oil system, belongs to mature and reliable product, induction is not
It is influenced by environmental magnetic field, it is only related with revolution the distance between sensor block 11 and inductance type transducer 13, and this distance ginseng
Number is fixed when being design, and be further ensured that by cylinder form it is consistent in motion process, will not with the variation of environment and
Variation, reliable trigger are further ensured that.
The construction of the utility model is contact, and induction only after guide rod 1 and rolling bearing 3 contact, there is very little
Movement will transmit and trigger induction, biggish distance of reaction is needed not as " magnetic induction ", therefore, can be in guide rod 1
Reduce structure size in the direction of motion.
Inductance type transducer 13 belongs to external, and whole device also only has the component to belong to electric elements, other to belong to
In component of machine, component of machine is not influenced by work condition environment, and therefore, reliability is higher, and inductance type transducer 13 is made
It for vulnerable part, is located at outside hydraulic chamber 5, service life can be improved, even if to replace, also more convenient and quicker, maintenance cost are low.
The present apparatus realizes the principle of 1 specific position of guide rod detection and has essential distinction, suitable environment in the prior art
And condition range is more wide compared with existing way, limitation is smaller.
What existing way middle magnetic ring was formed is the magnetic field space of an approximate spheres, causes distance of reaction big and unstable,
And the induction region of inductance type transducer 13 is a cylindrical region in this construction, only turns round the triggering end face of sensor block 11
111 could be incuded and be triggered immediately below it, and therefore, distance of reaction can almost be ignored, and improve detection accuracy and anti-
The authenticity of the guide rail position fed out.
Finally, it is stated that above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng
The utility model is described in detail according to preferred embodiment, those skilled in the art should understand that, it can be to this
The technical solution of utility model is modified or replaced equivalently, without departing from the objective and model of technical solutions of the utility model
It encloses, should all cover in the scope of the claims of the utility model.
Claims (10)
1. a kind of pump inductance type signal supervisory instrument, it is characterised in that: including outer sleeve body, slidable connection has biography in outer sleeve body
Bar is passed, one end of the transmission lever is signal triggering end, and the other end is mechanical contact end for contacting and making with measurand
Transmission lever is mobile towards its signal triggering end；Outer sleeve body be equipped with inductance type transducer corresponding with the signal triggering end with
Transmission lever triggers the inductance type transducer when mobile towards its signal triggering end；Return machine is equipped between outer sleeve body and transmission lever
Structure does not trigger initially setting for inductance type transducer so that transmission lever is maintained at when its mechanical contact end is not contacted with measurand
Positioning is set.
2. a kind of pump inductance type signal supervisory instrument according to claim 1, it is characterised in that: the signal of transmission lever triggers
End is connected with displacement amplifying mechanism to trigger when transmission lever is mobile towards its signal triggering end by the displacement amplifying mechanism
Inductance type transducer；The displacement amplifying mechanism includes revolution sensor block, and revolution sensor block passes through the letter of power transmission pin and transmission lever
Number triggering end is rotatably connected, and revolution sensor block is rotatably connected by fulcrum post and outer sleeve body and is to turn round with fulcrum post
The heart, perpendicular to the axis of transmission lever, the axis of power transmission pin and fulcrum post is parallel to each other to make axis in transmission lever for the axis of power transmission pin
Make to turn round sensor block by power transmission pin to when movement with the rotation of the fulcrum post centre of gyration；The revolution sensor block has triggering end
Face and its triggering end face are greater than the vertical range of power transmission pin to fulcrum post to the vertical range of fulcrum post；The inductance type transducer
It is corresponding with the revolution triggering end face of sensor block to be triggered when triggering end face into its induction region.
3. a kind of pump inductance type signal supervisory instrument according to claim 2, it is characterised in that: the triggering end face is column
Face is so that revolution sensor block its triggering distance during rotating triggering is consistent.
4. a kind of pump inductance type signal supervisory instrument according to claim 2, it is characterised in that: the transmitting that power transmission pin passes through
The corresponding position of the signal triggering end of bar is kidney-shaped through slot, and the diameter of power transmission pin and the fluting groove width of kidney-shaped through slot are corresponding, kidney-shaped
The slotting length direction of through slot is perpendicular to the axis of transmission lever and the axis of power transmission pin.
5. a kind of pump inductance type signal supervisory instrument according to claim 4, it is characterised in that: the outer sleeve body includes edge
It the sequentially connected sealing signal box of the axial direction of transmission lever, upper set and traps, the sealing signal box is the chamber knot of open at one end
Structure simultaneously seals fastening, the transmission lever and upper set and slidable connection of trapping by the corresponding end of its open end and upper set；It is described
Revolution sensor block is located in sealing signal box to guarantee enough rotary spaces, and the signal triggering end of transmission lever extends into sealing letter
In number box with turn round sensor block and connect, upper set towards sealing signal box end face or sealing signal box inner wall on be fixedly connected with
Incude block, revolution sensor block is rotatably connected by fulcrum post and the induction block；The inductance type transducer is connected to
On sealing signal box.
6. a kind of pump inductance type signal supervisory instrument according to claim 5, it is characterised in that: the return mechanism is spiral shell
Spinning spring；It above covers towards the end face trapped and is equipped with recessed heavy platform, the outer circumference surface of transmission lever is equipped with a circle flange, described
Heavy platform is coaxial with transmission lever and its internal diameter is greater than the outer diameter of the flange, and the helical compression spring is covered in transmission lever and is compressed in
Between the bottom surface of the heavy platform and the flange, the other end of the flange and trap towards the end face of upper set abut against with make
For the initial, set position.
7. a kind of pump inductance type signal supervisory instrument according to claim 6, it is characterised in that: on the side wall of the heavy platform
Perforative weighing apparatus pressure hole is offered, weighing apparatus indent is offered on the outer circumference surface of the transmitting rod segment in the upper set, the weighing apparatus indent will
Weighing apparatus pressure hole is connected to the inner cavity of sealing signal box.
8. a kind of pump inductance type signal supervisory instrument according to claim 5, it is characterised in that: the mechanical contact of transmission lever
End, which is extended, traps, and the mechanical contact end is hemispherical dome structure or the axis of rolling that transmission lever end is connected to by rotational pin
It holds；It is connected with system on the upper set or the side wall trapped and turns bolt, the inner end that the system turns bolt stretches to the outer circle of transmission lever
In the turn trough processed opened up on circumferential surface, the turn trough processed opens up along the axial direction of transmission lever and has certain length to avoid interference transmitting
The axial movement of bar, it is light cylindrical-shaped structure and diameter and turn trough processed that the part in turn trough processed is protruded into the inner end that the system turns bolt
Groove width it is corresponding to play the role of preventing transmission lever from rotating.
9. the connection structure that a kind of pump uses inductance type signal supervisory instrument, it is characterised in that: including hydraulic chamber and claim
A kind of pump inductance type signal supervisory instrument described in any one of 1-8, outer sleeve body pass through hydraulic chamber side wall and with it is hydraulic
The side wall of chamber is tightly connected, and the mechanical contact end of transmission lever is located in hydraulic chamber, and inductance type transducer is located at hydraulic chamber
Outside, there is the guide rod as measurand in the hydraulic chamber, the guide rod is axial reciprocating along itself, and the one of guide rod
It holds corresponding with the mechanical contact end to pass through the mechanical contact end in contact at the end and transmission lever and make transmission lever towards its signal
Triggering end is mobile.
10. a kind of pump connection structure of inductance type signal supervisory instrument according to claim 9, it is characterised in that: transmitting
The axis of bar and the axis of guide rod are mutually perpendicular to；Guide rod one end corresponding with the mechanical contact end is equipped with taper to pass through the cone
The mechanical contact end in contact of degree and transmission lever simultaneously keeps transmission lever mobile towards its signal triggering end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920340753.5U CN209539535U (en) | 2019-03-18 | 2019-03-18 | A kind of pump inductance type signal supervisory instrument and its connection structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920340753.5U CN209539535U (en) | 2019-03-18 | 2019-03-18 | A kind of pump inductance type signal supervisory instrument and its connection structure |
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| CN209539535U true CN209539535U (en) | 2019-10-25 |
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| CN201920340753.5U Expired - Fee Related CN209539535U (en) | 2019-03-18 | 2019-03-18 | A kind of pump inductance type signal supervisory instrument and its connection structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109763973A (en) * | 2019-03-18 | 2019-05-17 | 重庆水泵厂有限责任公司 | Pump inductance type signal supervisory instrument and its connection structure |
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2019
- 2019-03-18 CN CN201920340753.5U patent/CN209539535U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109763973A (en) * | 2019-03-18 | 2019-05-17 | 重庆水泵厂有限责任公司 | Pump inductance type signal supervisory instrument and its connection structure |
| CN109763973B (en) * | 2019-03-18 | 2024-01-23 | 重庆水泵厂有限责任公司 | Inductive signal detection device for pump and connection structure thereof |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191025 |