CN209424361U - A kind of valve rod roll unit - Google Patents
A kind of valve rod roll unit Download PDFInfo
- Publication number
- CN209424361U CN209424361U CN201822245169.XU CN201822245169U CN209424361U CN 209424361 U CN209424361 U CN 209424361U CN 201822245169 U CN201822245169 U CN 201822245169U CN 209424361 U CN209424361 U CN 209424361U
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- rolling
- valve rod
- slide
- wheel
- bearing
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Abstract
Valve rod roll unit provided by the utility model, including rack, ditch groove rolling device, rotary table；The ditch groove rolling device includes translation slide, rolling wheel, rolling wheel slide and rolling oil cylinder；The rotary table is installed close to the ditch groove rolling device, including pinion gear, gear wheel, bearing and power chuck and rack-mounted motor；The pinion gear covers on the output shaft of motor, and the pinion gear is engaged with gear wheel；The coaxial bearing is felt at ease in gear wheel, the gear wheel is rotatablely installed on the rack by bearing, the power chuck is mounted on the upper surface of the gear wheel, the main shaft of the power chuck is passed through from bearing, the chuck oil cylinder of the power chuck is located at the lower section of bearing, and the power chuck is used to clamp the bottom of valve rod.The utility model realizes the rolling to diesel exhaust gas valve rod, improves valve rod valve face intensity.
Description
Technical field
The utility model relates to diesel exhaust gas valve rod Conical Valve face roll units more particularly to a kind of rolling of valve rod to set
It is standby.
Background technique
China is shipbuilding big country, the world, but not yet becomes world's shipbuilding and make the country prosperous, and one of the major reasons are that ship is high-power
The two kernel component crankshafts and high temperature alloy air discharging valve bar of low-speed diesel engine are once completely dependent on import.It is 2012, bent
The manufacture difficulty of axis has been captured, but high-power diesel engine air discharging valve bar still relies on import.Ship is vented with high-power diesel engine
Valve valve rod specification is big, as the moving component under high temperature and pressure, requires all round properties such as the strength of materials and toughness very severe
It carves.Exhaust valve is the critical component of marine low speed diesel engine, because the quality of ventilation quality directly affects the power of diesel engine
Property, economy, reliability and exhaust pollution index.And exhasut valve stem is then the key in key, exhasut valve stem is that valve is important
Component, for being driven, Shang Jie executing agency or handle, band movable valve plug is mobile directly below or rotates, to realize valve switch
Or adjustment effect.Practical experience shows one of the main reason for exhasut valve stem has become exhaust defective valve.Due to existing for a long time
It works under high temperature and perishable adverse circumstances, requirement of the exhasut valve stem to heat-resisting quantity, corrosion resistance and fatigue resistance is very
It is high.It can be said that its " health status " directly affects the service life of diesel engine.
It is the failure of valve rod circular cone valve face that the failure of diesel exhaust valve, which mainly shows, comprising: abrasion, burn into crackle, fatigue
Deng, and by reinforcings of valve face can effectively improve valve face hardness and corrosion-resistant, fatigue performance, the effectively use of extension product
Service life.The process that valve face is strengthened is in air valve matrix conical surface built-up welding Ni-Cr alloy, by roll unit in valve face overlay cladding
If surface rolls the groove of arterial highway concentric circles with idler wheel, then removes valve face surplus with the method for machining, in this way after rolling
Valve face generate flow harden improve hardness, achieve the effect that valve face strengthen.
Rolling wheel for valve face rolling will also control rolling other than needing to apply big load pressure according to the technological requirements
The position of depth and each concentric circles.Otherwise for the exhaust valve of different size, the initial position of rolling wheel also needs to adjust.Therefore
On exhasut valve stem circular cone valve face roll unit, the structure of rolling wheel and driving rolling wheel is particularly important.Valve rod is in rolling device
Structure it is larger, and valve rod valve face be cone, need to roll entire valve face, rolling device rotation it is very inconvenient.Have
Necessity designs a kind of rolling device suitable for diesel exhaust valve valve rod.
Summary of the invention
The purpose of this utility model is to provide a kind of valve rod roll units, realize the rolling to diesel exhaust gas valve rod,
Improve valve rod valve face intensity.
Valve rod roll unit provided by the utility model, including rack, ditch groove rolling device；The ditch groove rolling device packet
Include translation slide, rolling wheel, rolling wheel slide and rolling oil cylinder；Sliding block, rolling wheel fixed peace are installed in the rolling wheel slide
Mounted in the sliding block lower end, rolls oil cylinder and sliding block is driven to move up and down to drive in rolling wheel slide to move down on rolling wheel
It is dynamic；The translation slide is mounted on the side of rack, and the corresponding site for translating the rack of slide installation place is inclined-plane, and the inclined-plane is oblique
It spends consistent with valve rod circular conical surface gradient；The translation slide is moved up and down by translation slide driving mechanism drives edge chassis ramp；
The rolling wheel slide is fixedly mounted on the front of translation slide；It further include rotary table, the rotary table is close to institute
State the installation of ditch groove rolling device, including pinion gear, gear wheel, bearing and power chuck and rack-mounted motor；Institute
It states pinion gear to cover on the output shaft of motor, the pinion gear is engaged with gear wheel；The coaxial bearing is felt at ease mounted in gear wheel
Interior, the gear wheel is rotatablely installed on the rack by bearing, and the power chuck is mounted on the upper surface of the gear wheel, institute
The main shaft for stating power chuck is passed through from bearing, and the chuck oil cylinder of the power chuck is located at the lower section of bearing, the power card
Disk is used to clamp the bottom of valve rod.
For the power chuck of the utility model under the action of chuck oil cylinder, clamping for power chuck can freely play open and close
It closes, clamps valve rod using card column, then bull gear drive is driven by motor, power chuck rotation is driven by gear wheel, thus band
Ovable valve stem rotation realizes that valve rod during rotation rolls valve face.The utility model passes through setting and valve rod circular conical surface
The consistent inclined-plane of gradient, installation translation slide and rolling wheel, roll exhasut valve stem circular cone valve face so as to efficiently accomplish, improve
Valve face intensity；And by the movement of translation slide and scroll wheel, plurality of specifications valve rod processing request can satisfy.
Since the valve face that need to be rolled is an inclined-plane, floating bearing needs to bear the heavy duty of horizontal and vertical directions,
Meet the requirement of turntable high-speed smooth simultaneously, the bearing of the utility model uses the intersection tapered roller bearing of major diameter, very well
Meet rotating accuracy and carrying etc. require.
Valve rod rolls during rotation, and the speed of valve rod rotation needs the diameter difference according to rolling groove and changes,
Higher to required precision, the utility model uses permanent magnet synchronous motor, realizes the variation of the revolving speed of power chuck.
Preferably, the sliding block is cylindrical slide, and the cross sectional shape of the cylindrical slide is rectangle.Sliding block is in rolling wheel slide
When interior drive rolling wheel moves up and down, it can prevent rolling wheel from occurring twisting phenomenon in rolling.
Rolling wheel slide top installation rolling cylinder installation seat, rolling oil cylinder are installed in rolling cylinder installation seat；
Piston thick stick one end of the rolling oil cylinder is connect with upper end of slide block, and the other end is connected with displacement sensor.When rolling oil cylinder stretches out
When band movable slider and rolling wheel move down, rolling wheel is with the valve rod conical surface contact rotated and constantly downward pressurization carries out
Rolling, forms circular groove on valve rod circular conical surface, after displacement sensor detects that trench depth reaches requirement, rolls oil cylinder
It retracts, rolling wheel lifts the rolling for completing the road groove.
The translation slide driving mechanism includes servo motor and ball-screw, the servo motor, ball-screw installation
In stand bevel.Servo motor drives ball screw turns, to drive translation slide mobile.
Compressed oil cylinder is installed in the top of the translation slide, and compact heap is housed on the piston rod of compressed oil cylinder；Work as rolling wheel
When carrying out load rolling, the compact heap compresses translation slide, prevents translation slide from being jacked up.
The utility model further includes centre frame position adjusting mechanism, which includes column, center
Frame mounting base, the column are mounted on the rack, and centre frame is mounted in centre frame mounting base, and the centre frame is used for pinch valve
Hydraulic cylinder is installed on the column in the top of bar, and the piston rod end of hydraulic cylinder is connect with centre frame mounting base, it is described in
Heart frame mounting base is moved up and down by hydraulic cylinder drive.Centre frame clamps valve rod top, prevents valve rod shaking in the rolling process,
Meanwhile driving centre frame to move up and down by rolling oil cylinder, and centre frame height can be adjusted according to valve rod different length specification, it is real
Now to the clamping of the valve rod of plurality of specifications.
Linear guide is arranged in the side of the base, and centre frame mounting base is connected by straight-line guide rail slide block and linear guide
It connects, and is moved up and down under the drive of hydraulic cylinder along linear guide.By the connection of sliding block, centre frame exists with center mounting base
Movement in linear guide is rolling friction, and moment of friction is small, and mobile light and flexible, linearity is accurate, centre frame can be made to exist
When height and position changes, keep Clamping Center constant.
Preferably, multiple idler wheels are installed on the inside of the centre frame, when rotary table band ovable valve stem rotates, due to
The setting of idler wheel is rolling friction between valve rod top and centre frame, reduces resistance and abrasion.
The utility model can clamp valve rod using power chuck automatically, drive by motor driven gear, by gear dynamic
The rotation of power chuck, and then rotated with ovable valve stem, valve rod is realized during rotation to the rolling of valve face.The utility model uses
Intersect tapered roller bearing, big load axially and radially can be born, meets the functions such as rotating accuracy and carrying well
It is required that while meeting the requirement of turntable high-speed smooth.It needs to be driven by swing mechanism when valve rod rolls, while valve rod rotation
It is rolled, the speed of rotation is different according to the diameter of rolling groove and changes, and the utility model is by using permanent magnet synchronous electric
Machine is adapted well to adjust the velocity of rotation of valve rod according to rolling trench diameter, meets equipment requirement as power.Pass through
Setting and the consistent chassis ramp of valve rod circular conical surface gradient, installation translation slide and rolling wheel, so as to efficiently accomplish to exhaust
The rolling of valve rod circular cone valve face, improves valve face intensity；And by the movement of translation slide and scroll wheel, plurality of specifications can satisfy
Valve rod processing request.The utility model can effectively solve valve rod circular cone valve face rolling when, valve rod top rod end shake the problem of；Together
When can be adjusted again according to valve rod different length specification, meet different size valve rod process requirements.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is rolling valve rod schematic diagram；
Fig. 3 is rotary table schematic diagram；
Fig. 4 is center rack position adjustment mechanism side view；
Fig. 5 is center rack position adjustment mechanism top view；
Fig. 6 is ditch groove rolling device schematic diagram.
In figure: 1- rack；2- valve rod；3- centre frame position adjusting mechanism；4- ditch groove rolling device；201- stem bottom；
301- column；302- rolls oil cylinder；303- linear guide；304- centre frame mounting base；305- centre frame；307- linear guide is sliding
Block；309- valve rod center；310- idler wheel；401- rolling wheel；402- column sliding block；403- rolling wheel slide；404- rolls oil cylinder
Mounting base；405- rolls oil cylinder；406- displacement sensor；407- compressed oil cylinder；408- compact heap；409- translates slide；410-
Ball-screw；411- servo motor；501- motor, 502- pinion gear；503- gear wheel, 504, bearing；505- power chuck；
506- chuck oil cylinder.
Specific embodiment
As shown in Figure 1, the utility model includes rack 1, centre frame position adjusting mechanism 3, ditch groove rolling device 4 and returns
Revolving worktable (not shown in figure 1).Ditch groove rolling device 4 is mounted on the side of rack 1, the installation of ditch groove rolling device and rack
The rack at place is an inclined-plane, and centre frame position adjusting mechanism 3 is mounted in rack 1, for clamping the top of valve rod 2, turns round work
The lower section of valve rod is set as platform, for clamping the bottom of valve rod.In conjunction with Fig. 2, when rotary table clamps 201 band of stem bottom
Ovable valve stem rotation, the idler wheel of ditch groove rolling device 4 roll out groove on valve rod.
As shown in figure 3, the rotary table of the utility model, motor 501 is mounted in rack 1, the output shaft of motor 501
On be set with pinion gear 502, the right side of pinion gear 502 is provided with gear wheel 503, pinion gear 502 is mutually nibbled with gear wheel 503
It closes, bearing 504 is installed in the middle part of gear wheel, band dynamic bearing 504 rotates when gear wheel 503 rotates, gear wheel 503 and bearing
504 concentric installations, bearing are mounted on the rack, and gear wheel is rotatablely installed on the rack by bearing.Power chuck 505 is installed
In the upper surface of gear wheel 503, the main shaft of power chuck is passed through from bearing, is driven power chuck 505 to rotate by gear wheel, is moved
The chuck oil cylinder 506 of power chuck is located at the lower section of bearing 504, by chuck oil cylinder 506 drive power chuck 505 claw open and
Closure.Valve rod rolls during rotation, and the speed of valve rod rotation needs the diameter difference according to rolling groove and changes, to essence
Spend it is more demanding, the utility model motor 501 use permanent magnet synchronous motor, realize power chuck 505 revolving speed variation.Revolution
Workbench diameter needs 700mm or more, and position accuracy demand of the revolving speed and valve stem seal face of revolution in tri- directions X, Y, Z all compares
Higher, rolling pressure maximum is up to 15 tons, and the valve face that need to be rolled is an inclined-plane, and floating bearing needs to bear horizontal and vertical two
The heavy duty in a direction, while meeting the requirement of turntable high-speed smooth, in structure design, the utility model is to support revolving platform
Rack uses thick steel plate welding form, and carries out repeatedly eliminating stress, then finished, it is ensured that each datum clamp face stabilization,
Accurately, reliably, the bearing 504 of the utility model selects the intersection tapered roller bearing of major diameter, meets revolution essence well
Degree and carrying etc. require.
As shown in Figure 4,5, centre frame position adjusting mechanism, including column 301, hydraulic cylinder 302, linear guide 303, in
Heart frame mounting base 304, the centre frame 305 positioned for valve rod rod end.Column 301 is fixed in rack 1, and linear guide 303 is pacified
Mounted in 301 side of column, the side of centre frame mounting base 304 is connect by straight-line guide rail slide block 307 with linear guide 303, in
304 upper surface of heart frame mounting base is equipped with centre frame 305 as mounting surface, clamps valve rod using 5 front end retaining part of centre frame
2, there are three idler wheels 310 for the inside setting of centre frame 305.The cylinder body of hydraulic cylinder 302 is mounted on column 301, hydraulic cylinder 302
Piston rod end connect with centre frame mounting base 304, centre frame mounting base 304 and center under the driving of hydraulic cylinder 302
Frame 305 can prolong linear guide 303 and move up and down, while can control centre frame mounting base and centre frame and stopping in desired height
It stays, to meet the clamping demand of different length specification valve rod circular cone valve face.
As shown in fig. 6, ditch groove rolling device includes translation slide 409,409 integral installation of slide is translated the one of rack 1
Side has inclined-plane at the rack position where the installation place of translation slide 409.Translate the front installation rolling skidding of slide 409
Seat 403；Column sliding 402 can slide up and down in rolling wheel slide 403, and rolling wheel 401 is mounted on 402 lower end of column sliding block use
It is rolled in groove；Rolling cylinder installation seat 404 is mounted on 403 top of rolling wheel slide, roll piston thick stick one end of oil cylinder 405 with
The connection of 402 upper end of column sliding block, the other end are connect with displacement sensor 406.Compressed oil cylinder 407 is mounted on the upper of translation slide
It is square, compact heap 408 is housed on the piston rod of compressed oil cylinder.The movement of translation slide is driven by ball-screw 410 and servo motor 411
It is dynamic.
In conjunction with Fig. 1-6, when utility model works, stem bottom is clamped using the power chuck of rotary table, then
The height of centre frame position adjusting mechanism is adjusted, i.e., drives centre frame mounting base 304 and centre frame 305 using hydraulic cylinder 302
Designated position is reached, clamps valve rod top using centre frame 305.Starting motor 501, motor 501 drives pinion gear 502 to rotate,
Pinion gear 502 drives the gear wheel 503 being engaged with to rotate, and then power chuck 505 is driven to rotate, by 505 band of power chuck
Ovable valve stem rotation.Servo motor 411 drives ball-screw 410 to rotate, to drive translation slide 409 upper and lower on chassis ramp
It is mobile, make the position for needing to roll groove on the rolling wheel 401 to valve rod circular conical surface for being mounted on translation 409 front of slide；It compresses
Oil cylinder 407 stretches out, and compact heap 408 compresses translation slide 409, prevents translation slide 409 when rolling from being jacked up.Roll oil cylinder 405
It stretches out, column sliding block 402 and rolling wheel 402 is driven to move down, the conical surface contact of rolling wheel 401 and the valve rod rotated
And constantly pressurization is rolled downwards, forms circular groove on valve rod circular conical surface.When displacement sensor 406 detects ditch groove depth
After degree reaches requirement, rolling oil cylinder 405 is retracted, and rolling wheel 401 lifts, and completes the rolling of the road groove.Pass through stitching oil later
Cylinder 405 is mobile with movable slider and rolling wheel, adjusts rolling wheel position according to required trench depth；It is mobile to translate slide 409, drives
Rolling wheel with translation the same inclined-plane of slide on move, make rolling wheel and valve rod conical surface contact, roll again after the completion, thus
If can roll out the groove of arterial highway concentric circles on circular conical surface, the depth of groove can be according to requiring to be controlled.
Claims (10)
1. a kind of valve rod roll unit, including rack, ditch groove rolling device；The ditch groove rolling device includes translation slide, rolling
Pinch roller, rolling wheel slide and rolling oil cylinder；Sliding block is installed, rolling wheel is fixedly mounted on the sliding block lower end in the rolling wheel slide
Portion, rolling oil cylinder drive sliding block to move up and down that rolling wheel is driven to move up and down in rolling wheel slide；The translation slide
It is mounted on the side of rack, the corresponding site for translating the rack of slide installation place is inclined-plane, the slope and valve rod circular conical surface
Gradient is consistent；The translation slide is moved up and down by translation slide driving mechanism drives edge chassis ramp；The rolling wheel slide
It is fixedly mounted on the front of translation slide；It is characterized by also including rotary table, the rotary table is close to the ditch
Groove rolling device installation, including pinion gear, gear wheel, bearing and power chuck and rack-mounted motor；It is described small
On the output shaft of motor, the pinion gear engages geared sleeve with gear wheel；The coaxial bearing is felt at ease in gear wheel, institute
It states gear wheel to be rotatablely installed on the rack by bearing, the power chuck is mounted on the upper surface of the gear wheel, described dynamic
The main shaft of power chuck is passed through from bearing, and the chuck oil cylinder of the power chuck is located at the lower section of bearing, and the power chuck is used
In the bottom of clamping valve rod.
2. valve rod roll unit as described in claim 1, it is characterised in that: the bearing is to intersect tapered roller bearing.
3. valve rod roll unit as claimed in claim 1 or 2, it is characterised in that: the motor is permanent magnet synchronous motor.
4. valve rod roll unit as claimed in claim 1 or 2, it is characterised in that: the sliding block is cylindrical slide, and the cylindricality is sliding
The cross sectional shape of block is rectangle.
5. valve rod roll unit as claimed in claim 1 or 2, it is characterised in that: the installation rolling of rolling wheel slide top
Cylinder installation seat, rolling oil cylinder are installed in rolling cylinder installation seat；Piston thick stick one end of the rolling oil cylinder and upper end of slide block
Connection, the other end are connected with displacement sensor.
6. valve rod roll unit as claimed in claim 1 or 2, it is characterised in that: the translation slide driving mechanism includes watching
Motor and ball-screw are taken, the servo motor, ball-screw are mounted on chassis ramp.
7. valve rod roll unit as claimed in claim 1 or 2, it is characterised in that: the top of the translation slide, which is installed, to be compressed
Oil cylinder is equipped with compact heap on the piston rod of compressed oil cylinder；When rolling wheel carries out load rolling, the compact heap compresses translation and slides
Seat.
8. valve rod roll unit as claimed in claim 1 or 2, it is characterised in that: it further include centre frame position adjusting mechanism, it should
Centre frame position adjusting mechanism includes column, centre frame mounting base, and the column is mounted on the rack, and centre frame is mounted on center
In frame mounting base, the centre frame is used to clamp the top of valve rod, installs hydraulic cylinder, the piston of hydraulic cylinder on the column
Boom end is connect with centre frame mounting base, and the centre frame mounting base is moved up and down by hydraulic cylinder drive.
9. valve rod roll unit as claimed in claim 8, it is characterised in that: linear guide, institute is arranged in the side of the column
It states centre frame mounting base to connect by straight-line guide rail slide block with linear guide, and under the drive of hydraulic cylinder in linear guide
Lower movement.
10. valve rod roll unit as claimed in claim 8, it is characterised in that: be equipped with multiple rollings on the inside of the centre frame
Wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822245169.XU CN209424361U (en) | 2018-12-28 | 2018-12-28 | A kind of valve rod roll unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822245169.XU CN209424361U (en) | 2018-12-28 | 2018-12-28 | A kind of valve rod roll unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209424361U true CN209424361U (en) | 2019-09-24 |
Family
ID=67974632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822245169.XU Active CN209424361U (en) | 2018-12-28 | 2018-12-28 | A kind of valve rod roll unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209424361U (en) |
-
2018
- 2018-12-28 CN CN201822245169.XU patent/CN209424361U/en active Active
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