CN209625810U - A kind of safe rod drive mechanism - Google Patents
A kind of safe rod drive mechanism Download PDFInfo
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- CN209625810U CN209625810U CN201920390456.1U CN201920390456U CN209625810U CN 209625810 U CN209625810 U CN 209625810U CN 201920390456 U CN201920390456 U CN 201920390456U CN 209625810 U CN209625810 U CN 209625810U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The utility model discloses a kind of safe rod drive mechanisms, including spindle drive chain, the spindle drive chain includes the second driving part, transmission shaft and main shaft, it is additionally provided with multiple rack gears on the main shaft, further includes being rotated with rack tooth meshed gears, second driving part by transmission shaft sliding tooth wheel, the lower end of the main shaft is further fixed on handle component, the main shaft is hollow shaft, and the handle component includes at least two claws, and each claw passes through articulated shaft and is articulated on main shaft；It further include handgrip transmission chain, the handgrip transmission chain includes central axis, the first driving part, and first driving part is used to that central axis to be driven to rotate around the axis of central axis；The central axis is threaded through in main shaft；The bottom of the central axis is further fixed on cam, and when cam is with central axis rotation, cam changes the size in the clamping gap by applying pressure to the inside of claw.It is convenient that safety rod drive mechanism has the characteristics that realization is reloaded.
Description
Technical field
The utility model relates to technical field of nuclear power, more particularly to a kind of safe rod drive mechanism.
Background technique
Safe rod drive mechanism (control rod drive mechanism) is important component or equipment in reactor, lower end connection peace
Full stick (control rod), such as under emergency work condition, discharging safety rod to realize reactor emergency shut-down.Normal reactor operation
When safety rod be maintained at highest point for a long time, once accident occurs, safe rod drive mechanism changes its constraint, and safety rod is quick
It is inserted into reactor core, so that reactor is realized emergency shut-down, to guarantee the safety of reactor.
A kind of reliable performance, safe rod drive mechanism easy to use are designed, is that those skilled in the art research and develop safety
The important directions of rod drive mechanism.
Utility model content
A kind of reliable performance, safe rod drive mechanism easy to use are designed for set forth above, is this field skill
Art personnel research and develop the problem of important directions of safe rod drive mechanism, and the utility model provides a kind of safe rod drive mechanism,
It is convenient that safety rod drive mechanism has the characteristics that realization is reloaded.
A kind of safe rod drive mechanism provided by the utility model is solved the problems, such as by following technical essential: a kind of safety
Rod drive mechanism, including spindle drive chain, the spindle drive chain include the second driving part, transmission shaft and main shaft, the master
Be additionally provided with multiple rack gears on axis, multiple rack gears are arranged along the axis direction of main shaft, further include with rack tooth meshed gears,
Second driving part is rotated by transmission shaft sliding tooth wheel, and the lower end of the main shaft is further fixed on for entrapment stick
Handle component, the main shaft are hollow shaft, and the handle component includes at least two claws, and it is hinged that each claw passes through articulated shaft
In on main shaft, surrounding the clamping gap for entrapment stick between the lower end of claw；
It further include handgrip transmission chain, the handgrip transmission chain includes central axis, the first driving part, first driving portion
Part is used to that central axis to be driven to rotate around the axis of central axis；
The central axis is threaded through in main shaft；
The bottom of the central axis is further fixed on cam, and when cam is with central axis rotation, cam passes through into claw
Side applies pressure, changes the size in the clamping gap.
In the present solution, second driving part is for driving transmission shaft to rotate: gear rotates under the action of transmission shaft,
Due to being additionally provided with multiple rack gears on main shaft, during gear rotation, gear occurs in the position of engagement of the axis of main shaft
Variation, i.e., in the case where position is fixed in space for gear, according to the forward and backward of gear, can driving spindle complete to pull out, under
Movement is inserted, to achieve the purpose that change main shaft lower end safety rod position in reactor.
In the prior art, it reloads for safety rod, generally are as follows: after main shaft and safety rod drop to bottom, main shaft must be removed
With the connection of safety rod, and in the fit form of existing main shaft and safety rod, generally by manually applying to main shaft along perpendicular
Histogram to thrust or pulling force, complete main shaft and safety rod separation or connection.And as the cold fast neutron reactor sealing of sodium
Environment for the benefit of obtains closed environment or is conducive to safe operation, should not be completed by way of above-mentioned push or pull on main shaft with
The connection of safety rod.In the present solution, first driving part is used to drive central axis rotation, in the process of central axis rotation
In, the cam changes the size in the clamping gap, is grabbed in the process with realizing to reload by applying pressure to the inside of claw
Hand unit discharges safety rod and crawl safety rod.As cam be one when, by the edge action of cam at least one claw
The opening angle in gap between upper constraint claw, the elastic component being such as equipped between claw and main shaft may make and pass through
The rotation of cam becomes smaller again so that gap first becomes larger, and by changing the size in the gap, reaches and changes handle component to safety
Stick clamp position achievees the purpose that reload.Compared to the existing implementation by pushing away, drawing main shaft, since main shaft is using
It only moves in a straight line in the process in vertical direction without rotating, while the position of claw in the height direction is to change
, therefore this programme is used, in specific use, stroke pipe can be set in the upper end of central axis, be used for the length of up stroke pipe
Central axis is adapted to main shaft in the displacement of vertical direction, and stroke pipe and central axis are keyed, i.e., motion of main shaft when central axis
Upper end remains the key connection relationship that torque can be transmitted with stroke pipe, when cam needs to rotate, the rotation of driving trip pipe
So that cam following, and stroke pipe may be configured as in axial location of the respective drive mechanism on safe rod drive mechanism
It is fixed, in this way, safe rod drive mechanism stroke pipe and the respective drive mechanism rotated for driving trip pipe in normal use
Will not to safety rod above mention and underthrust generate any influence.Compared to the existing implementation by pushing away, drawing main shaft, realize
The movement only needs to apply torque to central axis by the first driving part, is such as driven using servo motor, using this
Scheme can avoid facing traditional artificial operation axis and realizing being not suitable for asking for confined space to the release and crawl of safety rod
Topic, while central axis rotation seals that increased difficulty is small to realizing, thus this driving mechanism not only realize crawl to safety rod and
Release is easily achieved, while structure is simple, the application occasion especially suitable for the cold fast neutron reactor of for example sodium.
In the present solution, being set as main shaft is hollow shaft, central axis is arranged in main shaft, in this way, may make entire driving machine
Structure is compact-sized, and required space is smaller.In specific use, being preferably arranged to main shaft and handle component can be same as above, together with main shaft
Under, the extreme lower position that central axis can be fallen on down relative to main shaft, and the first driving part, the second drive are such as constrained by handle component
Dynamic component only needs output torque, and servo motor both can be used, it is contemplated that the first driving part, the second driving part
Working environment, be preferably arranged to the first driving part, the second driving part is respectively positioned on the outside of this driving mechanism casing.This
Sample, since main shaft needs to move in vertical direction at work, therefore the type of attachment of the first driving part and central axis can pass through
Flexible axle connection, the connection of stroke pipe etc., the above flexible axle, which connects, the connection of stroke pipe is intended to handgrip transmission chain not influences spindle drive chain
It works normally: in lifting spindle, when the first driving part changes relative to cam position, the first driving part and central axis
All have reliable connection relationship.
Further technical solution are as follows:
The handgrip transmission chain further includes stroke pipe, and the axis of the central axis is parallel with the axis of stroke pipe, central axis
Upper end be located in stroke pipe, the lower end of central axis is located at the downside of stroke pipe；
Key is additionally provided between the central axis and stroke pipe, the key is when stroke pipe rotates, by being cut, in driving
Mandrel is rotated with stroke pipe, and central axis can move back and forth on the axis of stroke pipe relative to stroke pipe；
The main shaft can be relatively rotated with stroke pipe and main shaft can back and forth be transported relative to stroke pipe on the axis of stroke pipe
It is dynamic.In the present solution, being set as includes realizing the company of the first driving part and central axis indirectly by stroke pipe with up stroke pipe
Connect: movement itself has no effect on the function of this handgrip transmission chain to main shaft in normal work or this handgrip transmission chain has no effect on
The length of the regular event of main shaft, stroke pipe makes main shaft in elevating movement, can pass always between stroke pipe and central axis
Torque is passed, in this way, being able to achieve completion pair by the rotation of stroke pipe when stroke pipe rotates under the action of the first driving part
The crawl and release of safety rod.In above scheme, the main shaft can be relatively rotated with stroke pipe and main shaft can relative to stroke pipe
It is moved back and forth on the axis of stroke pipe, can be accomplished in that the main shaft is located at downside or the main shaft of stroke pipe
Upper end and the lower end of stroke pipe have nest relation, and the above nest relation can be located at the tubular of another one for any one in the two
Torque can not be transmitted in space but between the two: the rotation of stroke pipe, which does not influence the rotation of main shaft or main shaft, does not influence stroke pipe
Rotation, while stroke pipe does not influence the elevating movement of main shaft.Realize that spindle drive chain, the respective movement of handgrip transmission chain can be mutual
It does not influence.Using this programme, in the case where the first driving part installation site is certain, handgrip transmission chain may make to pass in main shaft
Normal drive connection is all had under dynamic chain different conditions, in this way, not only may make this driving mechanism reliable performance, is convenient for simultaneously
It realizes and the first driving part is mounted on the outside of this driving mechanism casing to improve the working environment of the first driving part.Having
When body uses, it is preferably provided with are as follows: stroke pipe, main shaft, central axis three are coaxial.
To make stroke pipe after rotating special angle, handgrip transmission chain can be by self-locking, so that cam applies claw
Addition of constraints is to keep the specific state of claw, setting are as follows: first driving part is connected with stroke pipe by drive shaft, described
Also it is in series with the first worm gear mechanism with self-locking property in drive shaft, in first worm gear mechanism, worm gear is logical
Axis of overdriving is connected with stroke pipe, and worm screw is connected by drive shaft with the first driving part.The i.e. described drive shaft is multistage combination
Formula structure, part paragraph are used for the company of worm gear and stroke pipe for the connection between worm screw and the first driving part, part paragraph
It connects.
The spindle drive chain further includes electromagnetic clutch, and the electromagnetic clutch includes electromagnetic coil, outer barrel and interior
Cylinder, the outer barrel is set in the outside of inner cylinder, and all has between inner cylinder outer wall each point and outer barrel inner wall each point
Gap；
The electromagnetic coil is located at the outside of outer barrel or the inside positioned at inner cylinder；
Electromagnetic clutch is connected on transmission shaft: in outer barrel and inner cylinder the two, one of them passes through transmission shaft and the
Two driving parts are connected, and another one is connected by transmission shaft with gear.In the present solution, including interior by being set as electromagnetic clutch
Cylinder, outer barrel and electromagnetic coil, while being set as all having gap between inner cylinder outer wall each point and outer barrel inner wall each point,
I.e. inner cylinder is alternatively arranged with outer barrel, and inner cylinder and outer barrel are without directly contacting, and the bonding state of electromagnetic clutch is are as follows: electricity
Magnetic coil is powered, and the magnetic force between inner cylinder and outer barrel to drive in both inner cylinder and outer barrel in the second driving part
One of be directly connected to rotation with the second driving part, and another one under the action of the two magnetic force with turning, under this state
Gear rotation is driven to change position of the main shaft on reactor axis by the second driving part.In electromagnetic coil such as in accident
Under state when power loss, the magnetic force between inner cylinder and outer barrel disappears, and spindle drive chain loses to main shaft tenesmus under this state
Constraint, the gravity of main shaft the effects of under drop, while in tenesmus, the matching relationship and gear of main shaft and gear with it is described
The connection relationship of one of them in the two, so that main shaft is only capable of driving connect with direct geared one by transmission shaft in tenesmus
Person's rotation may make main shaft to have smaller tenesmus resistance in such cases, the time required to being conducive to reduce safety rod tenesmus, make
The performance for obtaining this spindle drive chain is more reliable.It is simultaneously in the present solution, described between the two without being directly connected to, therefore compared to existing
Electromagnetic clutch, transmit torque by magnetic force when due to electromagnetic clutch work, therefore both described normal in spindle drive chain
It is friction free both when work, therefore in the present solution, since electromagnetic clutch is not present abrasion at work, therefore this spindle drive
Chain also has better performance reliability.
Specifically, in electromagnetic clutch, setting are as follows: electromagnetic coil, including coil body, the coil body include coil
Skeleton and coil windings, the coil rack include tubular inner frame and outer skeleton, further include end plate, the inner frame,
Outer skeleton, end plate surround annular space, and the coil windings are installed in the annular space, the material of the outer skeleton and end plate
Matter is magnetic conductive material, and the inner frame overall material is non-permeable material or local material is non-permeable material；When
Be the part of non-permeable material be cylinder section when inner frame part material is non-permeable material, and the cylinder section be connected on it is interior
Between the both ends of skeleton；Meanwhile electromagnetic clutch include outer barrel, inner cylinder electromagnetic coil is the specific scheme is that the outer cylinder
Body is mounted on the inside of inner frame, and has gap between outer barrel and inner frame；The inner cylinder is mounted on the interior of outer barrel
Side is additionally provided with a plurality of second axial cord on the outside of inner cylinder, and the described second axial cord annular is distributed on inner cylinder,
A plurality of first axis cord is additionally provided on the outside of outer barrel, the first axis cord annular is distributed on outer barrel, the
The extending direction of one axial cord along outer barrel axial direction, the extending direction of the second axial cord along inner cylinder axis
To direction, and also there is gap between the second axial cord and first axis cord, the above gap is for avoiding inner cylinder and outer
Cylinder is touched during relatively rotating；The material of the inner cylinder and the second axial cord is magnetic conductive material；Institute
It states outer barrel to be connected in series by three sections of cylinder sections, the cylinder section for forming outer barrel includes being in the end barrel section at both ends and in intermediate
Middle part cylinder section, the material of the end barrel section are magnetic conductive material, and the material of the middle part cylinder section is non-magnetic shape material；Institute
State inner frame generally non-permeable material material when, the projection of the end plate towards outer barrel is fallen in end barrel section, and hold
Plate and outer barrel section correspond；It is described to state inner frame locally be non-permeable material material when, be non-permeable material
The projection of other sections towards the outer barrel of cylinder section two sides is fallen in end barrel section, and other described sections and outer barrel section are one by one
It is corresponding.
Specifically, such as connecting driving device on outer barrel, in both outer barrel and inner cylinder, outer barrel is actuating cylinder
Body: it when coil windings are powered, to power on as exciting current, at this point, coil windings generate magnetic field, is set as outside the above
The material of skeleton and end plate is magnetic conductive material, and the inner frame overall material is non-permeable material or local material is non-
Magnetic conductive material；It is the part of non-permeable material is cylinder section, and described when inner frame part material is non-permeable material
Cylinder section is connected between the both ends of inner frame, is selected by the material whole or local to outer barrel and inner cylinder, both may be used in this way
Guarantee, the above electromagnetic clutch is when being powered, the magnetic for the medium guidance magnetic flux that the above magnetic conductive material part is transmitted as magnetic field
Road, while the above non-permeable material can be limited to respective magnetic circuit or the magnetic line of force is annular in shape: main magnetic circuit or the magnetic line of force are in ring
Shape, and path covers the end plate of outer skeleton, two sides, while passing through outer barrel and inner cylinder, in this way, due to including the axial rib
Item, when outer barrel is driven the torque rotation of device application, the respective magnetic force between axial cord of outer barrel and inner cylinder
Line distortion, always attempts to shrink using the magnetic line of force, so that feature of magnetic resistance minimum allows as actively on the path for passing through it
The outer barrel of rotor is opposite with the inner cylinder salient pole center as driven rotor, at this moment, can be obtained a tangential component effect
It is that driven rotor generates torque in driven rotor, makes driven rotor that power rotor be followed to rotate, electromagnetic clutch in the case of this
Connection status in transmitting torque.When coil windings power loss, the above magnetic force heading line off or magnetic flux become smaller, in this case, electric
Magnet clutch becomes off-state or is gradually returned to off-state.
Preferably, it is set as the permeable section of the above inner cylinder and outer barrel, i.e. magnetic conductive material part is all made of soft magnetism
Body, i.e. material are soft magnet material, so that it being capable of easy magnetization and easy demagnetization under the action of electromagnetic coil；Meanwhile
It uses since this spindle drive chain needs to be mounted in tubular casing, to optimize sleeve stress, is preferably provided with are as follows: second drives
Dynamic component is the axis driving motor coaxial with main shaft, and transmission shaft is made of multistage, and electromagnetic clutch is as composition transmission shaft
Connector between two sections；The axis of transmission shaft and the axis of main shaft are parallel, and the outer barrel is installed in casing by bearing,
Inner cylinder is installed in outer barrel by bearing, and inner cylinder, outer barrel, the axis of electromagnetic coil three are total with the main shaft of main shaft
Line, meanwhile, fluted disc is installed on inner cylinder and outer barrel by connecting key, is also arranged and corresponding inner cylinder, outer cylinder on transmission shaft
The transmitting of power between the fluted disc of fluted disc tooth engagement on body, i.e. inner cylinder, outer barrel and corresponding transmission shaft is also through tooth engagement
Mode is transmitted.
To make when the second driving part stops to transmission shaft input torque, what main shaft can be stable rests on specific height
Degree, setting are as follows: further include the second worm gear mechanism with self-locking property being connected on transmission shaft, the second worm gear snail
Linkage is between electromagnetic clutch and the second driving part；
In second worm gear mechanism, worm gear is connected by transmission shaft with electromagnetic clutch, and worm screw passes through transmission shaft and the
Two driving parts are connected.Present solution provides a kind of structure is simple, and the technical solution that deceleration transmission improves torque can be passed through.
To occur safety rod rebound situation, setting are as follows: further include being set to when avoiding main shaft tenesmus with dynamic conduit phase separation
The freewheel clutch with one-way check function between inner cylinder and outer barrel, the freewheel clutch make outer barrel with it is interior
In cylinder the two, one of being connected with gear can rotate independently of another one.Using this programme, when electromagnetic clutch combines,
Since inner cylinder and outer barrel rotate synchronously, so when freewheel clutch upper-part and do not have relative motion, and electromagnetism from
When clutch disengages, freewheel clutch permission one of is connected with gear and can rotate relative to another one, at this point, main shaft tenesmus；It is main
Axis tenesmus in place because collision and when rebounding, inverted since freewheel clutch obstruction one of is connected with gear, therefore can reach and keep away
Exempt from the purpose of main shaft rebound.
As the specific implementation of electromagnetic clutch, setting are as follows: the electromagnetic coil, outer barrel, inner cylinder, main shaft four
Person is coaxial, and the inner cylinder is set in the outside of main shaft, and electromagnetic coil is cylindrical in shape, and electromagnetic coil is set in the outside of outer barrel；
The electromagnetic coil and outer barrel are mutually indepedent.In the present solution, electromagnetic coil and outer barrel, outer barrel and inner cylinder
Without directly contact, in this way, electromagnetic coil will not rotate with outer barrel, therefore when specifically used, electromagnetic coil is fixed
It is mounted in the pipe of described sleeve pipe, in this way, not only facilitating the wiring construction of simplified electromagnetic coil, simultaneously because electromagnetic clutch
The power receiving section split-phase of device fixes casing, conducive to the reliability of electromagnetic clutch performance.Using this programme, that is, can be used above
The outer barrel of proposition is by way of bearing is connect by bearing with outer barrel with casing connection, inner cylinder.Preferably, for convenience
Transmission shaft, setting are set are as follows: transmission shaft between electromagnetic clutch and driving part and outer barrel tooth engagement, electromagnetic clutch with
Transmission shaft and inner cylinder tooth engagement between gear.
For the implementation accelerated main shaft falling speed in the state of accident, reduce stress when main shaft falls on earth, if
It is set to: further including the accelerator for accelerating main shaft falling speed；It further include the cylinder as spindle drive chain shell, it is described
Accelerator is the compressed spring or disk spring being installed between main shaft and cylinder, is made in the main shaft in the second driving part
With it is lower above mention when, elastic compression occurs as accelerator compressed spring or disk spring；It further include falling for reducing main shaft
When to the buffer unit of the impact force of dynamic conduit；The buffer unit is the compressed spring being installed between main shaft and cylinder or dish
Shape spring, when the main shaft falls, elastic compression occurs for compressed spring or disk spring as buffer unit.This programme
In, the cylinder is above-described casing.In above specific accelerator and buffer unit implementation, on main shaft
One boss in flange plate-like, the outside evagination with convex platform relative to main shaft are set, while being arranged in the duct of cylinder
Two bulge loops annular in shape, the wall surface with convex ring relative to the duct protrudes, and one of bulge loop is located at the upper of boss
Side, another bulge loop are located at the downside of boss, and the upper surface of boss supports the spring of acceleration, the spring worked as a buffer
Be set between downside bulge loop and boss: by be arranged specific upside bulge loop, boss, each comfortable cylinder of downside bulge loop three and
Position on main shaft, when main shaft above mentions, bulge loop is moved towards boss to the upper side, after mentioning position on main shaft, between the two
Spring is compressed；It drops the bottom of to before in main shaft, the spring on the downside of boss leads to as the supporting element between downside bulge loop and boss
Flexible deformation is crossed, provides upward power to boss to play buffer function.
As the specific implementation of cam, the cam is two, and two cams are ellipticity cam, two cams
The different location being mounted in center shaft axis, two cams and central axis, and the folder between the respective long axis of two cams
Angle is 90 °, is located between the both ends of claw on claw for realizing the hinged articulated shaft of claw and main shaft, two claws are relative to master
The axis of axis axisymmetricly, and one of cam be located at articulated shaft upside be used for the claw section on the upside of articulated shaft it is mutual
Effect, the downside that another cam is located at articulated shaft are used to interact with the claw section on the downside of articulated shaft.As this field
Technical staff, the above ellipticity cam as complete the edge of the top view for the cam installed on safe rod drive mechanism in ellipse
Same size can be used in round shape, two above cam, different sizes also can be used, the program is in specific use, for claw, such as
Claw is two, and the edge of two cams applies constraint to it respectively, and articulated shaft is the center of rotation of claw, in central axis rotation
When, opening and closing movement is completed in clamping gap between two claws: when cam is with central axis rotation, for each claw, on articulated shaft
The long axis edge of the cam of side presses when on claw, the short axle edge of the cam on the downside of articulated shaft and claw phase separation, at this point,
Between the lower end of claw there is minimum clearance to be used for entrapment stick；The short axle edge of cam on the upside of articulated shaft is pressed in claw
When upper, the long axis edge of the cam on the downside of articulated shaft and claw phase separation, at this point, between the lower end of claw there is maximal clearance to use
In release safety rod or the upper end of safety rod is embedded between claw to be ready for entrapment stick.Using this programme,
Two claws are constrained simultaneously by two above cam, so that there is specific relative motion state, and the above phase between claw
It is periodic relative motion to movement, using this programme, each claw and main shaft are hinged by articulated shaft, do not need as above
The scheme including elastic component；This programme is used simultaneously, since cam is rigid body compared to elastomer, is pressed from both sides between claw
The change for holding gap only relies upon the rotation of cam, therefore uses this programme, this handgrip transmission chain also may make to have performance more
Reliably, accordingly safe rod drive mechanism has the characteristics that structure is more simple.
Have to enable handle component to constrain position of the central axis relative to main shaft on main-shaft axis, while being directed to
The technical solution of two cams, setting are as follows: the claw is two, and is provided on two claws for constraining central axis lower end
Relative to the step of main shaft position on main-shaft axis, two steps are in face relationship, the step relative to the axis of main shaft
For providing support for the lower end of center axis；
It is respectively provided with flat segments on the inside of two claws, the flat segments are for realizing the clamping gap on the claw
When state in entrapment stick, the side of the cam and flat segments cooperate, and cam can be along flat segments in main shaft
Axis direction sliding.This programme is used, during the time it is carried out, main shaft drops to before lowest order under the upper end and central axis of safety rod
End in contact, in this way, safety rod generates jacking to central axis and makees after clamping gap in place between the upper end of safety rod insertion claw
With, in this way, by detection device inspection center axis relative to main shaft the position on main-shaft axis, judge whether to have occurred described
Jacking, achieve the purpose that determine whether to occur false entrapment stick: when being clamped with safety rod, central axis is jacked, and is not clamped
When having safety rod, central axis falls to bottom end and is supported by step, and the above difference in height is realized by flat segments.
Further, the Redundancy Design that cam can be driven to rotate as one kind completes main shaft under power blackout situation to realize
Release to safety rod, setting are as follows: further include the manual driving device being connected with stroke pipe, the manual driving device is for leading to
It crosses and manually applies torque, the rotation of driving trip pipe.As those skilled in the art, since stroke pipe needs to fix when in use
Position installation, therefore corresponding manual driving device can be the turning handle etc. connecting by gear with stroke pipe, the above turning handle can be bar
Shape structure, itself has inflection point thereon so that operator can directly apply torque or be provided with bayonet, card slot etc., above
Bayonet and card slot are for connecting other tools, with more convenient application torque.For be provided with the first worm gear mechanism and
The scheme of drive shaft must be set as manual driving device and be connected on worm screw.Similarly, can also be arranged on spindle drive chain manually
Driving device, for the scheme for being provided with the second worm gear mechanism, also it is required that manual driving device is connected on worm screw.
For convenience of the position for obtaining main shaft, setting are as follows: further include the position detecting device for detecting main spindle's.As
Position sensor can be used in those skilled in the art, the detection device.
It further include for detecting stroke pipe or central axis rotation state for the working condition for intuitively reflecting handgrip transmission chain
Position detecting device.
Centered on axis and stroke pipe concrete form, setting are as follows: the upper end of the central axis be in spline shaft-like, the row
The casing of keyway is provided on Cheng Guanwei pore.
The utility model has the following beneficial effects:
In the present solution, first driving part is for driving central axis rotation, it is described during central axis rotation
Cam changes the size in the clamping gap, handle component during reloading with realization by applying pressure to the inside of claw
Discharge safety rod and crawl safety rod.As cam be one when, constrained at least one claw by the edge action of cam
The opening angle in gap between claw, the elastic component being such as equipped between claw and main shaft, that is, may make through cam
Rotation, becomes smaller again so that gap first becomes larger, and by changing the size in the gap, reaches and changes handle component to safety rod clamping
State achievees the purpose that reload.Compared to the existing implementation by pushing away, drawing main shaft, realize that the movement only needs to lead to
It crosses the first driving part and torque is applied to central axis, such as driven using servo motor, using this programme, can avoid facing biography
The problem of system manual operation main shaft realization is not suitable for confined space to the release and crawl of safety rod, while central axis rotation pair
Realize that the increased difficulty of sealing is small, therefore this driving mechanism not only realizes that crawl and release to safety rod are easily achieved, and ties simultaneously
Structure is simple, the application occasion especially suitable for the cold fast neutron reactor of for example sodium.
In the present solution, being set as main shaft is hollow shaft, central axis is arranged in main shaft, in this way, may make entire driving machine
Structure is compact-sized, and required space is smaller.In specific use, being preferably arranged to main shaft and handle component can be same as above, together with main shaft
Under, the extreme lower position that central axis can be fallen on down relative to main shaft, and the first driving part, the second drive are such as constrained by handle component
Dynamic component only needs output torque, and servo motor both can be used, it is contemplated that the first driving part, the second driving part
Working environment, be preferably arranged to the first driving part, the second driving part is respectively positioned on the outside of this driving mechanism casing.This
Sample, since main shaft needs to move in vertical direction at work, therefore the type of attachment of the first driving part and central axis can pass through
Flexible axle connection, the connection of stroke pipe etc., the above flexible axle, which connects, the connection of stroke pipe is intended to handgrip transmission chain not influences spindle drive chain
It works normally: in lifting spindle, when the first driving part changes relative to cam position, the first driving part and central axis
All have reliable connection relationship.
Detailed description of the invention
Fig. 1 is a kind of transmission principle figure of one specific embodiment of safe rod drive mechanism described in the utility model；
Fig. 2 is a kind of partial schematic diagram of safe one specific embodiment of rod drive mechanism described in the utility model, should
Schematic diagram is cross-sectional view, reflects the specific structure of electromagnetic clutch and the connection relationship of itself and transmission shaft；
Fig. 3 is a kind of partial schematic diagram of safe one specific embodiment of rod drive mechanism described in the utility model, should
Schematic diagram is cross-sectional view, reflects the structure of this driving mechanism bottom and its connection type with safety rod.
Appended drawing reference in figure is successively are as follows: 1, claw, 2, central axis, 3, main shaft, 4, cam, 5, stroke pipe, 6, first drives
Dynamic component, 7, manual driving device, 8, position detecting device, the 9, first worm gear mechanism, 10, articulated shaft, 11, safety rod,
12, the second worm gear mechanism, 13, freewheel clutch, 14, accelerator, 15, buffer unit, 16, handle component, 17, electromagnetism
Coil, 18, outer barrel, 19, connecting key, 20, transmission shaft, 21, inner cylinder, 22, bearing, 23, gear, 24, rack gear, 25, second
Driving part, 26, electromagnetic clutch, 27, step, 28, flat segments.
Specific embodiment
Below with reference to embodiment, the utility model is described in further detail, but the structure of the utility model is not only
It is limited to following embodiment.
Embodiment 1:
As shown in Figure 1 to Figure 3, a kind of safe rod drive mechanism, including 3 transmission chain of main shaft, 3 transmission chain of main shaft include
Second driving portion 25, transmission shaft 20 and main shaft 3, are additionally provided with multiple rack gears 24 on the main shaft 3, and multiple rack gears 24 are along master
The axis direction of axis 3 arranges, and further includes the gear 23 with 24 tooth engagement of rack gear, and second driving portion 25 pass through transmission shaft 20
Gear 23 is driven to rotate, the lower end of the main shaft 3 is further fixed on the handle component 16 for entrapment stick 11, the main shaft 3
For hollow shaft, the handle component 16 includes at least two claws 1, and each claw 1 is articulated on main shaft 3 by articulated shaft 10,
The clamping gap for entrapment stick 11 is surrounded between the lower end of claw 1；
It further include handgrip transmission chain, the handgrip transmission chain includes central axis 2, the first driving part 6, first driving
Component 6 is used to that central axis 2 to be driven to rotate around the axis of central axis 2；
The central axis 2 is threaded through in main shaft 3；
The bottom of the central axis 2 is further fixed on cam 4, and when cam 4 is rotated with central axis 2, cam 4 is by claw
1 inside applies pressure, changes the size in the clamping gap.
In the present solution, second driving portion 25 are used to that transmission shaft 20 to be driven to rotate: work of the gear 23 in transmission shaft 20
With lower rotation, due to being additionally provided with multiple rack gears 24 on main shaft 3, during gear 23 rotates, axis of the gear 23 in main shaft 3
The position of engagement of line changes, i.e., in the case where position is fixed in space for gear 23, according to the forward and backward of gear 23,
It can be pulled out in the completion of driving spindle 3, underthrust movement, to reach the mesh for changing 3 position in reactor of lower end safety rod 11 of main shaft
's.
In the prior art, it reloads for safety rod 11, generally are as follows: after main shaft 3 and safety rod 11 drop to bottom, must remove
The connection of main shaft 3 and safety rod 11, and in the fit form of existing main shaft 3 and safety rod 11, generally by manually to main shaft 3
Apply thrust along vertical direction or pulling force, completes the separation or connection of main shaft 3 and safety rod 11.And as sodium it is cold it is fast in
Sub- reactor sealing environment for the benefit of obtains closed environment or is conducive to safe operation, should not pass through the above-mentioned shape pushed or pulled on
The connection of formula completion main shaft 3 and safety rod 11.In the present solution, first driving part 6 is for driving the rotation of central axis 2, In
During central axis 2 rotates, the cam 4 changes the big of the clamping gap by applying pressure to the inside of claw 1
Small, handle component 16 discharges safety rod 11 and crawl safety rod 11 during being reloaded with realization.As cam 4 be one when, pass through
The edge action of cam 4 constrains the opening angle in gap between claw 1 at least one claw 1, is such as equipped in claw 1
It with the elastic component between main shaft 3, that is, may make the rotation by cam 4, become smaller again so that gap first becomes larger, described in changing
The size in gap reaches and changes handle component 16 to 11 clamp position of safety rod, achievees the purpose that reload.It is logical compared to existing
The implementation for pushing away, drawing main shaft 3 is crossed, realizes that the movement only needs to apply torque to central axis 2 by the first driving part 6,
It is such as driven using servo motor, using this programme, can avoid facing the traditional artificial realization of operation axis 3 to safety rod 11
The problem of release and crawl are not suitable for confined space, while central axis rotation is small to the increased difficulty of realization sealing, therefore this drive
Motivation structure, which is not only realized, is easily achieved the crawl and release of safety rod 11, while structure is simple, cold especially suitable for for example sodium
The application occasion of fast neutron reactor.
In the present solution, being set as main shaft 3 is hollow shaft, central axis 2 is arranged in main shaft 3, in this way, may make entire driving
Mechanism structure is compact, and required space is smaller.In specific use, it is preferably arranged to main shaft 3 and handle component 16 can be same with main shaft 3
Under upper, same, the extreme lower position that central axis 2 can be fallen on down relative to main shaft 3, and the first driving portion are such as constrained by handle component 16
Part 6, the second driving portion 25 only need output torque, servo motor both can be used, it is contemplated that the first driving part
6, the working environment of the second driving portion 25 is preferably arranged to the first driving part 6, the second driving portion 25 is respectively positioned on this driving
The outside of mechanism casing.In this way, since main shaft 3 needs to move in vertical direction at work, therefore the first driving part 6 and center
The type of attachment of axis 2 can be connected by flexible axle, stroke pipe 5 connects etc., and the above flexible axle connection, the connection of stroke pipe 5 are intended to handgrip biography
Dynamic chain does not influence the normal work of 3 transmission chain of main shaft: when main shaft 3 is gone up and down, in the first driving part 6 relative to 4 position of cam
When variation, the first driving part 6 all has reliable connection relationship with central axis 2.
Embodiment 2:
As shown in Figure 1 to Figure 3, the present embodiment is further qualified on the basis of embodiment 1: the handgrip transmission chain is also
Including stroke pipe 5, the axis of the central axis 2 is parallel with the axis of stroke pipe 5, and the upper end of central axis 2 is located in stroke pipe 5,
The lower end of central axis 2 is located at the downside of stroke pipe 5；
Key is additionally provided between the central axis 2 and stroke pipe 5, the key, by being cut, drives when stroke pipe 5 is rotated
Dynamic central axis 2 is rotated with stroke pipe 5, and central axis 2 can move back and forth on the axis of stroke pipe 5 relative to stroke pipe 5；
The main shaft 3 can be relatively rotated with stroke pipe 5 and main shaft 3 relative to stroke pipe 5 can on the axis of stroke pipe 5 it is past
Multiple movement.In the present solution, being set as includes realizing the first driving part 6 in indirectly by stroke pipe 5 with up stroke pipe 5
The connection of mandrel 2: movement itself has no effect on the function or the transmission of this handgrip of this handgrip transmission chain to main shaft 3 in normal work
Chain has no effect on the regular event of main shaft 3, and the length of stroke pipe 5 makes main shaft 3 in elevating movement, stroke pipe 5 and central axis 2
Between can transmit torque always, in this way, under the action of the first driving part 6 stroke pipe 5 rotate when, pass through stroke pipe 5
Rotation is able to achieve the crawl and release completed to safety rod 11.In above scheme, the main shaft 3 opposite can turn with stroke pipe 5
Dynamic and main shaft 3 can be moved back and forth relative to stroke pipe 5 on the axis of stroke pipe 5, can be accomplished in that the main shaft
3, which are located at the upper end of the downside of stroke pipe 5 or main shaft 3 and the lower end of stroke pipe 5, has nest relation, and the above nest relation can be two
Any one in person is located in the cylindrical spaces of another one but can not transmit torque between the two: the rotation of stroke pipe 5 not shadow
The rotation or main shaft 3 for ringing main shaft 3 do not influence the rotation of stroke pipe 5, while stroke pipe 5 does not influence the elevating movement of main shaft 3.Realize master
3 transmission chain of axis, the respective movement of handgrip transmission chain can be independent of each other.Using this programme, in 6 installation site of the first driving part
In the case where certain, handgrip transmission chain may make to all have normal drive connection under 3 transmission chain different conditions of main shaft, this
Sample not only may make this driving mechanism reliable performance, while being easy to implement the first driving part 6 being mounted on this driving mechanism set
The outside of pipe is to improve the working environment of the first driving part 6.In specific use, be preferably provided with are as follows: stroke pipe 5, main shaft 3,
2 three of central axis is coaxial.
To make stroke pipe 5 after rotating special angle, handgrip transmission chain can be by self-locking, so that cam 4 is to claw 1
Apply constraint to keep the specific state of claw 1, be arranged are as follows: first driving part 6 passes through drive shaft phase with stroke pipe 5
Even, the first worm gear mechanism 9 with self-locking property, first worm gear mechanism 9 are also in series in the drive shaft
In, worm gear is connected by drive shaft with stroke pipe 5, and worm screw is connected by drive shaft with the first driving part 6.The i.e. described drive shaft
For multi-section combined structure, part paragraph for the connection between worm screw and the first driving part 6, part paragraph for worm gear with
The connection of stroke pipe 5.
3 transmission chain of main shaft further includes electromagnetic clutch 26, and the electromagnetic clutch 26 includes electromagnetic coil 17, outer cylinder
Body 18 and inner cylinder 21, the outer barrel 18 are set in the outside of inner cylinder 21, and 21 outer wall each point of inner cylinder and outer barrel 18
Gap is all had between inner wall each point；
The electromagnetic coil 17 is located at the outside of outer barrel 18 or positioned at the inside of inner cylinder 21；
Electromagnetic clutch 26 is connected on transmission shaft 20: in 21 the two of outer barrel 18 and inner cylinder, one of them passes through biography
Moving axis 20 is connected for 25 with the second driving portion, and another one is connected by transmission shaft 20 with gear 23.In the present solution, by being set as
Electromagnetic clutch 26 includes inner cylinder 21, outer barrel 18 and electromagnetic coil 17, while being set as 21 outer wall each point of inner cylinder and outer
Gap is all had between 18 inner wall each point of cylinder, i.e. inner cylinder 21 is alternatively arranged with outer barrel 18, inner cylinder 21 and outer barrel 18
Without directly contacting, the bonding state of electromagnetic clutch 26 is are as follows: electromagnetic coil 17 is powered, between inner cylinder 21 and outer barrel 18
Magnetic force make 25 driving inner cylinders 21 of the second driving portion in 18 the two of outer barrel with the second driving portion 25 be directly connected to
One of rotation, and another one under the action of the two magnetic force with turn, under this state, can pass through the second driving portion 25 driving
Gear 23 rotates and changes position of the main shaft 3 on reactor axis.It is interior in such as power loss in the state of accident of electromagnetic coil 17
Magnetic force between cylinder 21 and outer barrel 18 disappears, and 3 transmission chain of main shaft loses the constraint to drop to main shaft 3 under this state, in master
It drops under the effects of gravity of axis 3, while in tenesmus, the matching relationship and gear 23 and described two of main shaft 3 and gear 23
The connection relationship of one of them in person is directly connected to so that main shaft 3 is only capable of driving by transmission shaft 20 in tenesmus with gear 23
One of rotation may make main shaft 3 that there is smaller tenesmus resistance in such cases, conducive to reducing needed for safety rod 11 drops
Time, so that the performance of 3 transmission chain of this main shaft is more reliable.It is simultaneously in the present solution, described between the two without being directly connected to, therefore phase
Compared with existing electromagnetic clutch 26, torque is transmitted by magnetic force when working due to electromagnetic clutch 26, thus it is both described in master
It is friction free both when 3 transmission chain of axis works normally, therefore in the present solution, since there is no mills at work for electromagnetic clutch 26
Damage, therefore 3 transmission chain of this main shaft also has better performance reliability.
Preferably, the permeable section for being set as the above inner cylinder 21 and outer barrel 18 is all made of soft magnetic bodies, i.e. material is
Soft magnet material, so that it being capable of easy magnetization and easy demagnetization under the action of electromagnetic coil 17；Simultaneously as this main shaft 3
Transmission chain, which needs to be mounted in tubular casing, to be used, and to optimize sleeve stress, is preferably provided with are as follows: the second driving portion 25 is
The axis driving motor coaxial with main shaft 3, transmission shaft 20 are made of multistage, electromagnetic clutch 26 as composition transmission shaft 20 two
Connector between section；The axis of transmission shaft 20 is parallel with the axis of main shaft 3, and the outer barrel 18 is installed on set by bearing 22
In pipe, inner cylinder 21 is installed in outer barrel 18 by bearing 22, inner cylinder 21, outer barrel 18,17 three of electromagnetic coil axis
Line is conllinear with the main shaft 3 of main shaft 3, meanwhile, fluted disc, transmission shaft are installed on inner cylinder 21 and outer barrel 18 by connecting key 19
On 20 also setting with the fluted disc of fluted disc tooth engagement on corresponding inner cylinder 21, outer barrel 18, i.e., inner cylinder 21, outer barrel 18 with it is corresponding
The transmitting of power between transmission shaft 20 is transmitted also through the mode of tooth engagement.
When to stop at the second driving portion 25 to 20 input torque of transmission shaft, what main shaft 3 can be stable is rested on
Certain height, setting are as follows: it further include the second worm gear mechanism 12 with self-locking property being connected on transmission shaft 20, it is described
Second worm gear mechanism 12 is located between electromagnetic clutch 26 and the second driving portion 25；
In second worm gear mechanism 12, worm gear is connected by transmission shaft 20 with electromagnetic clutch 26, and worm screw passes through transmission
Axis 20 is connected for 25 with the second driving portion.Present solution provides a kind of structure is simple, and deceleration transmission can be passed through and improve torque
Technical solution.
To occur the rebound situation of safety rod 11, setting when avoiding the tenesmus of main shaft 3 with dynamic conduit phase separation are as follows: further include setting
The freewheel clutch 13 with one-way check function between inner cylinder 21 and outer barrel 18, the freewheel clutch 13 make
In outer barrel 18 and 21 the two of inner cylinder, one of being connected with gear 23 can rotate independently of another one.Using this programme, in electricity
When magnet clutch 26 combines, since inner cylinder 21 and outer barrel 18 rotate synchronously, so when freewheel clutch 13 upper-part not
With relative motion, and when electromagnetic clutch 26 disengages, the permission of freewheel clutch 13 one of is connected with gear 23 can be opposite
It is rotated in another one, at this point, main shaft 3 drops；When the tenesmus of main shaft 3 rebounds because of collision in place, since freewheel clutch 13 hinders
Hinder the reversion that one of is connected with gear 23, therefore can reach the purpose for avoiding main shaft 3 from rebounding.
As the specific implementation of electromagnetic clutch 26, setting are as follows: the electromagnetic coil 17, outer barrel 18, inner cylinder
21, main shaft 3 four is coaxial, and the inner cylinder 21 is set in the outside of main shaft 3, and electromagnetic coil 17 is cylindrical in shape, and 17 sets of electromagnetic coil
It is located at the outside of outer barrel 18；
The electromagnetic coil 17 and outer barrel 18 are mutually indepedent.In the present solution, electromagnetic coil 17 and outer barrel 18, outer barrel
18 directly contact with the nothing of inner cylinder 21, in this way, electromagnetic coil 17 will not rotate with outer barrel 18, therefore specifically used
When, electromagnetic coil 17 is fixedly mounted in the pipe of described sleeve pipe, in this way, not only facilitating the wiring of simplified electromagnetic coil 17
Structure, simultaneously because the power receiving section split-phase of electromagnetic clutch 26 fixes casing, conducive to the reliable of 26 performance of electromagnetic clutch
Property.Using this programme, that is, outer barrel 18 set forth above can be used by bearing 22 and casing connection, inner cylinder 21 and pass through bearing
22 forms being connect with outer barrel 18.Preferably, for convenience of setting transmission shaft 20, setting are as follows: electromagnetic clutch 26 and driving portion
Transmission shaft 20 and inner cylinder 21 between 18 tooth engagement of transmission shaft 20 between part and outer barrel, electromagnetic clutch 26 and gear 23
Tooth engagement.
For the implementation accelerated the falling speed in the state of accident of main shaft 3, reduce stress when main shaft 3 falls on earth,
Setting are as follows: further include the accelerator 14 for accelerating 3 falling speed of main shaft；It further include the cylinder as 3 chain case of main shaft
Body, the accelerator 14 are the compressed spring or disk spring being installed between main shaft 3 and cylinder, in the main shaft 3
When above mentioning under the effect of two driving portions 25, elastic compression occurs as 14 compressed spring of accelerator or disk spring；Further include
For reducing when main shaft 3 falls to the buffer unit 15 of the impact force of dynamic conduit；The buffer unit 15 be installed on main shaft 3 with
Compressed spring or disk spring between cylinder, when the main shaft 3 falls, compressed spring or dish as buffer unit 15
Elastic compression occurs for spring.In the present solution, the cylinder is above-described casing.The above specific accelerator 14 is gentle
In 15 implementation of flushing device, as a boss in flange plate-like is arranged on main shaft 3, with convex platform relative to the outer of main shaft 3
Side evagination, while two bulge loops annular in shape are set in the duct of cylinder, it is convex relative to the wall surface in the duct with convex ring
Out, and one of bulge loop is located at the upside of boss, another bulge loop is located at the downside of boss, the upper surface of boss support plus
The spring of speed effect, the spring worked as a buffer are set between downside bulge loop and boss: by be arranged specific upside bulge loop,
Position on boss, each comfortable cylinder of downside bulge loop three and main shaft 3, when main shaft 3 above mentions, bulge loop is transported towards boss to the upper side
Dynamic, after mentioning position on main shaft 3, spring between the two is compressed；Spring before the tenesmus bottom of to of main shaft 3, on the downside of boss
As the supporting element between downside bulge loop and boss, by flexible deformation, upward power is provided to play buffer function to boss.
As the specific implementation of cam 4, the cam 4 is two, and two cams 4 are ellipticity cam 4, two
Cam 4 is mounted on the different location on 2 axis of central axis, and two cams 4 are coaxial with central axis 2, and the respective long axis of two cam 4
Between angle be 90 °, be located between the both ends of claw 1 on claw 1 for realizing the hinged articulated shaft 10 of claw 1 and main shaft 3,
Two claws 1 relative to main shaft 3 axis axisymmetricly, and one of cam 4 be located at articulated shaft 10 upside be used for it is hinged
The claw section interaction of 10 upside of axis, the downside that another cam 4 is located at articulated shaft 10 are used for and 10 downside of articulated shaft
Claw section interaction.As those skilled in the art, the above ellipticity cam 4 is to complete in 11 driving mechanism of safety rod
The edge of the top view of the cam 4 of upper installation is in ellipticity, and two above cam 4 can be used same size, different rulers also can be used
Very little, the program is two for claw 1, such as claw 1, the edge of two cams 4 respectively applies about it in specific use
Beam, articulated shaft 10 are the center of rotation of claw 1, and when central axis 2 rotates, it is dynamic to complete opening and closing for clamping gap between two claws 1
Make: when cam 4 is rotated with central axis 2, pressing for each claw 1, such as the long axis edge of the cam 4 of 10 upside of articulated shaft in card
When on pawl 1, the short axle edge of the cam 4 of 10 downside of articulated shaft and 1 phase separation of claw, at this point, having most between the lower end of claw 1
Small―gap suture is used for entrapment stick 11；The short axle edge of the cam 4 of 10 upside of articulated shaft presses the articulated shaft 10 when on claw 1
The long axis edge of the cam 4 of downside and 1 phase separation of claw, at this point, having maximal clearance for discharging peace between the lower end of claw 1
Full stick 11 is embedded in the upper end of safety rod 11 between claw 1 to be ready for entrapment stick 11.Using this programme, lead to
It crosses two above cam 4 while constraining two claws 1, so that there is specific relative motion state, and the above phase between claw 1
Be periodic relative motion to movement, using this programme, each claw 1 is hinged by articulated shaft 10 with main shaft 3, do not need as
The above-described scheme including elastic component；This programme is used simultaneously, since cam 4 is rigid body, claw 1 compared to elastomer
Between clamp changes in gap and only rely upon the rotation of cam 4, therefore use this programme, also may make this handgrip transmission chain with property
Can more reliable, corresponding 11 driving mechanism of safety rod have the characteristics that structure is more simple.
To enable handle component 16 to constrain position of the central axis 2 relative to main shaft 3 on 3 axis of main shaft, same to hour hands
To tool, there are two the technical solution of cam 4, settings are as follows: the claw 1 is two, and is provided on two claws 1 for constraining
Step 27 of 2 lower end of central axis relative to the position on 3 axis of main shaft of main shaft 3, two steps 27 are in relative to the axis of main shaft 3
Face relationship, the step 27 are used to provide support for the lower end of center axis 2；
In the inside of two claws 1 it is respectively provided with flat segments 28, the flat segments 28 are for realizing the folder on the claw 1
When holding gap and being in the state of entrapment stick 11, the side of the cam 4 and flat segments 28 cooperate, and cam 4 can be along flat
Straight section 28 is slided in the axis direction of main shaft 3.This programme is used, during the time it is carried out, main shaft 3 drops to safety rod 11 before lowest order
Upper end and central axis 2 lower end in contact, in this way, safety rod 11 upper end insertion claw 1 between clamping gap in place after, peace
Full stick 11 generates jacking effect to central axis 2, in this way, by detection device inspection center axis 2 relative to main shaft 3 in 3 axis of main shaft
Position on line judges whether the jacking for having occurred described, achievees the purpose that determine whether to occur false entrapment stick 11: clamping
When having safety rod 11, central axis 2 is jacked, and when not being clamped with safety rod 11, central axis 2 falls to bottom end and supported by step 27,
The above difference in height is realized by flat segments 28.
Further, the Redundancy Design that cam 4 can be driven to rotate as one kind completes main shaft under power blackout situation to realize
The release of 3 pairs of safety rods 11, setting are as follows: further include the manual driving device 7 being connected with stroke pipe 5, the manual driving device 7
For by manually applying torque, driving trip pipe 5 to rotate.As those skilled in the art, since stroke pipe 5 is using
When need to fix position installation, therefore corresponding manual driving device 7 can be the turning handle etc. connecting by gear 23 with stroke pipe 5, with
Upper turning handle can be rod-like structure, itself have inflection point so that operator can directly apply torque or be provided with card thereon
Mouth, card slot etc., with upper latch notch and card slot for connecting other tools, with more convenient application torque.For being provided with first
The scheme of worm gear mechanism 9 and drive shaft must be set as manual driving device 7 and be connected on worm screw.It similarly, also can be in main shaft
Manual driving device 7 is set on 3 transmission chains, for the scheme for being provided with the second worm gear mechanism 12, also it is required that manually
Driving device 7 is connected on worm screw.
For convenience of the position for obtaining main shaft 3, setting are as follows: further include the position detecting device 8 for detecting 3 position of main shaft.
As those skilled in the art, position sensor is can be used in the detection device.
It further include for detecting 2 rotary state of stroke pipe 5 or central axis for the working condition for intuitively reflecting handgrip transmission chain
Position detecting device 8.
Centered on axis 2 and stroke pipe 5 concrete form, setting are as follows: the upper end of the central axis 2 be in spline shaft-like, institute
Stating stroke pipe 5 is the casing that keyway is provided on pore.
The above content is the further descriptions made in conjunction with specific preferred embodiment to the utility model, cannot recognize
Determine specific embodiment of the present utility model to be only limited to these instructions.For the common skill of the utility model technical field
For art personnel, the other embodiments obtained in the case where not departing from the technical solution of the utility model be should be included in practical
In novel protection scope.
Claims (10)
1. a kind of safe rod drive mechanism, including spindle drive chain, the spindle drive chain includes the second driving part (25), passes
Moving axis (20) and main shaft (3) are additionally provided with multiple rack gears (24) on the main shaft (3), and multiple rack gears (24) are along main shaft (3)
Axis direction arrangement further includes passing through transmission shaft with the gear (23) of rack gear (24) tooth engagement, second driving part (25)
(20) driving gear (23) rotation, the lower end of the main shaft (3) is further fixed on the handle component for entrapment stick (11)
(16), which is characterized in that the main shaft (3) is hollow shaft, and the handle component (16) includes at least two claws (1), each to block
Pawl (1) is articulated on main shaft (3) by articulated shaft (10), is surrounded between the lower end of claw (1) for entrapment stick (11)
Clamping gap；
It further include handgrip transmission chain, the handgrip transmission chain includes central axis (2), the first driving part (6), first driving
Component (6) is used to that central axis (2) to be driven to rotate around the axis of central axis (2)；
The central axis (2) is threaded through in main shaft (3)；
The bottom of the central axis (2) is further fixed on cam (4), and when cam (4) is rotated with central axis (2), cam (4) passes through
Apply pressure to the inside of claw (1), changes the size in the clamping gap.
2. a kind of safe rod drive mechanism according to claim 1, which is characterized in that the handgrip transmission chain further includes row
The axis of journey pipe (5), the central axis (2) is parallel with the axis of stroke pipe (5), and the upper end of central axis (2) is located at stroke pipe (5)
Interior, the lower end of central axis (2) is located at the downside of stroke pipe (5)；
Key is additionally provided between the central axis (2) and stroke pipe (5), the key is when stroke pipe (5) rotate, by being cut,
Central axis (2) are driven to rotate with stroke pipe (5), and central axis (2) can be relative to stroke pipe (5) on the axis of stroke pipe (5)
It moves back and forth；
The main shaft (3) and stroke pipe (5) can relatively rotate and main shaft (3) can be in the axis of stroke pipe (5) relative to stroke pipe (5)
It is moved back and forth on line.
3. a kind of safe rod drive mechanism according to claim 2, which is characterized in that first driving part (6) with
Stroke pipe (5) is connected by drive shaft, and the first worm gear mechanism with self-locking property is also in series in the drive shaft
(9), in first worm gear mechanism (9), worm gear is connected by drive shaft with stroke pipe (5), worm screw pass through drive shaft and
First driving part (6) is connected.
4. a kind of safe rod drive mechanism according to claim 1, which is characterized in that the spindle drive chain further includes electricity
Magnet clutch (26), the electromagnetic clutch (26) include electromagnetic coil (17), outer barrel (18) and inner cylinder (21), described outer
Cylinder (18) is set in the outside of inner cylinder (21), and between inner cylinder (21) outer wall each point and outer barrel (18) inner wall each point
With gap；
The electromagnetic coil (17) is located at the outside of outer barrel (18) or is located at the inside of inner cylinder (21)；
Electromagnetic clutch (26) is connected on transmission shaft (20): in outer barrel (18) and inner cylinder (21) the two, one of them is logical
It crosses transmission shaft (20) to be connected with the second driving part (25), another one is connected by transmission shaft (20) with gear (23).
5. a kind of safe rod drive mechanism according to claim 4, which is characterized in that further include being connected on transmission shaft (20)
On the second worm gear mechanism (12) with self-locking property, second worm gear mechanism (12) is located at electromagnetic clutch
(26) between the second driving part (25)；
In second worm gear mechanism (12), worm gear is connected by transmission shaft (20) with electromagnetic clutch (26), and worm screw passes through biography
Moving axis (20) is connected with the second driving part (25).
6. a kind of safe rod drive mechanism according to claim 4, which is characterized in that further include being set to inner cylinder (21)
The freewheel clutch (13) with one-way check function between outer barrel (18), the freewheel clutch (13) make outer cylinder
In body (18) and inner cylinder (21) the two, one of being connected with gear (23) can rotate independently of another one.
7. a kind of safe rod drive mechanism according to claim 4, which is characterized in that the electromagnetic coil (17), outer cylinder
Body (18), inner cylinder (21), main shaft (3) four are coaxial, and the inner cylinder (21) is set in the outside of main shaft (3), electromagnetic coil
(17) it is cylindrical in shape, electromagnetic coil (17) is set in the outside of outer barrel (18)；
The electromagnetic coil (17) and outer barrel (18) are mutually indepedent.
8. a kind of safe rod drive mechanism according to claim 1, which is characterized in that further include for accelerating main shaft (3)
The accelerator (14) of falling speed；It further include the cylinder as spindle drive chain shell, the accelerator (14) is installation
Compressed spring or disk spring between main shaft (3) and cylinder, in the main shaft (3) under the second driving part (25) effect
When above mentioning, elastic compression occurs as accelerator (14) compressed spring or disk spring；It further include for reducing under main shaft (3)
To the buffer unit (15) of the impact force of dynamic conduit when falling；The buffer unit (15) is to be installed between main shaft (3) and cylinder
Compressed spring or disk spring, the main shaft (3) fall when, compressed spring or disk spring as buffer unit (15)
Elastic compression occurs.
9. a kind of safe rod drive mechanism as claimed in any of claims 1 to 8, which is characterized in that the cam
It (4) is two, and two cams (4) are ellipticity cam, two cams (4) are mounted on the different positions on central axis (2) axis
Set, two cams (4) with central axis (2) coaxially, and the angle between two cams (4) respective long axis is 90 °；
It is located between the both ends of claw (1) on claw (1) for realizing the hinged articulated shaft (10) of claw (1) and main shaft (3), and
The upside that one of cam (4) is located at articulated shaft (10) is used to interact with the claw section on the upside of articulated shaft (10), separately
The downside that one cam (4) is located at articulated shaft (10) is used to interact with the claw section on the downside of articulated shaft (10).
10. a kind of safe rod drive mechanism according to claim 9, which is characterized in that the claw (1) is two, and
The platform for constraining central axis (2) lower end relative to main shaft (3) position on main shaft (3) axis is provided on two claws (1)
Rank (27), two steps (27) are in face relationship relative to the axis of main shaft (3), and the step (27) is used to be center axis (2)
Lower end provide support；
Be respectively provided on the inside of two claws (1) flat segments (28), the flat segments (28) for realizing:
When the clamping gap on the claw is in the state of entrapment stick (11), the side of the cam (4) with it is straight
Section (28) cooperation, and cam (4) can be slided along flat segments (28) in the axis direction of main shaft (3).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920390456.1U CN209625810U (en) | 2019-03-26 | 2019-03-26 | A kind of safe rod drive mechanism |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920390456.1U CN209625810U (en) | 2019-03-26 | 2019-03-26 | A kind of safe rod drive mechanism |
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| CN209625810U true CN209625810U (en) | 2019-11-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109859863A (en) * | 2019-03-26 | 2019-06-07 | 四川华都核设备制造有限公司 | A kind of safe rod drive mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109859863A (en) * | 2019-03-26 | 2019-06-07 | 四川华都核设备制造有限公司 | A kind of safe rod drive mechanism |
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Inventor after: Wang Mingzheng Inventor after: Jin Fenglei Inventor after: Xia Fan Inventor after: Zheng Fulei Inventor after: Chen Shuming Inventor after: Yang Kongli Inventor after: Zhu Qing Inventor after: Yu Jie Inventor after: Wang Bo Inventor before: Zhu Qing Inventor before: Yu Jie Inventor before: Wang Bo |
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Effective date of registration: 20201231 Address after: 100000 Beifang, Xinzhen, Fangshan District, Beijing Patentee after: China Institute of Atomic of Energy Address before: 610000 Sichuan Chengdu Dujiangyan Sichuan Dujiangyan Economic Development Zone No. 5 Longxiang Road Patentee before: Sichuan Huadu Nuclear Equipment Manufacture Co.,Ltd. |