Relief valve is a kind of automatic valve, and it is not by any external force, but discharges a volume using the power of medium itself
The fluid of fixed number amount, in case pressure exceedes predetermined safety value in locking system.After pressure recovers normal, close simultaneously again by row for valve
Medium is stoped to continue to flow out.Relief valve be used for pressure vessel, pressure pipeline, by the device such as hot pot stove, for by protection device because
System overpressure and occur explode and damage, to equipment run and personal security play important protective effect.
After relief valve is using a period of time, because the sealing surface that many reasons make relief valve occurs different degrees of damage
And lead to relief valve that different degrees of leakage occurs.It is thus desirable to breakdown maintenance is carried out to relief valve leakage, keep in repair it
Again pressure checking is carried out to relief valve afterwards.Sealing surface of safety valve its physical dimension after multiple reconditioning can not meet sealing will
Ask, then need valve base of safety valve sealing surface is machined out.
The situation of maintenance relief valve is as follows both at home and abroad at present：
1. effectively cannot fix relief valve in workshop breakdown maintenance, lead to relief valve disintegration, assembling extremely difficult, or even
The security incident generation that larger caliber valve is toppled in disintegration and assembling process and injured operating personnel by a crashing object occurs.
Note：Its weight of relief valve that bore is more than DN250 is above 200Kg greatly, highly more than 1.5 meters.
2. sealing surface of safety valve lapping mode is to carry out hand lapping with grinding flat plate, and this operating type efficiency is low, work
Industry personnel labor intensity is big；
For example：The relief valve that one entablature footpath is DN200, valve base sealing surface damage is serious, hand lapping valve element and valve seat are close
The time of front cover often will exceed 4 hours, and an operating personnel at most can only repair 2 to 3 relief valve daily.
3. relief valve repair quality is often related to operating personnel proficiency level, and relief valve maintenance " disposable qualification rate " is no
Method effectively improves, and leads to batch to do over again and have a strong impact on maintenance progress.
4. larger defect in valve base of safety valve needs to need special lathe and must make special frock during machining
Fixture fixed valve, this mode is costly and maintenance cycle is long.
In view of drawbacks described above, be badly in need of design a kind of can stable holding relief valve device, realize maintenance and verifying function collection
One-tenthization and automatization.
Content of the invention
The technical problem to be solved is：There is provided a kind of can stable holding relief valve device.
For solving above-mentioned technical problem, the technical scheme is that：
A kind of can stable holding relief valve device, it includes hoistable platform and relief valve fixture, wherein said lifting put down
Platform includes the bottom and the top being oppositely arranged with bottom for being attached on ground, and it is flat that described relief valve fixture is installed on lifting
The top of platform, described relief valve fixture is used for gripping relief valve, described relief valve fixture include horizontally disposed mounting disc,
Three hold assemblies being arranged in mounting disc and being vertically arranged, described three hold assemblies are equal along the circumferencial direction of mounting disc
Even distribution, the angle that each hold assembly connects the mounting disc center of circle with adjacent another hold assembly is 120 °, each hold assembly
Including can be along pawling that radial direction moves, each hold assembly also includes the pressure for pushing down relief valve in above-below direction
Compared with prior art, the present invention has the beneficial effect that：Due to relief valve fixture include horizontally disposed upper and lower
The paw of relief valve is pushed down in direction, so that relief valve is hung directly from the clamping device of vertical vee-block compared to existing technology,
Achieve multiple directions clamping, thus clamping is more stable.
The further improvement of the present invention is as follows：
Further, described vertical arm is provided with vertical connecting plates moving up and down, described vertical connecting plates are pacified
Equipped with horizontal connecting plate, described horizontal arm can move on horizontal plate along the longitudinal direction.
Further, the top of described vertical arm is provided with vertical servomotor, and the bottom of described vertical arm is provided with liquid
Push back and turn actuator, described vertical servomotor is used for driving vertical connecting plates to move along the vertical direction, described hydraulic gyration drives
Moving part is used for driving vertical arm along the vertical axial line rotation of oneself.
Further, described horizontal arm includes the horizontal servo motor positioned at its rear end and the union joint being located at its front end,
Described horizontal servo motor moves along the longitudinal direction for drive connection head.
Further, described union joint has the vertical through hole running through union joint along the vertical direction, and described vertical through hole is used
Installation in grinder or cutting tool.
Further, described relief valve fixture includes three fixtures, and described mechanical arm realizes grinder or turning work
The revolution of three stations of tool.
Further, the size dimension of described three fixtures is different, such that it is able to place the safety of different size respectively
Further, the vertical axial line of three fixtures is respectively positioned at same as the center of circle with the vertical axial line of vertical arm
Further, three fixtures are located at middle size on circumference greatly, and on circumference, the size on both sides is little.
Further, the top of described hoistable platform includes load plate and the cover plate covering above load plate, and described load plate includes
Base plate, the surrounding coaming plate extending upward from base plate surrounding and the host cavity being surrounded by base plate and surrounding coaming plate, described safety
Valve fixture has pushing away above top board to grab and is located at the single-acting cylinder housing intracavity.
The present invention is further described with reference to the accompanying drawings and examples.
As shown in Figures 1 to 9, for meet the present invention a kind of can stable holding relief valve device 100, it include lift
11, three relief valve fixtures 12 of platform and mechanical arm 13.
Described hoistable platform 11 includes bottom 111 and the top being oppositely arranged with bottom 111 for being attached on ground
112, described three relief valve fixtures 12 and mechanical arm 13 are mounted on the top 112 of hoistable platform 11.Described relief valve folder
Tool 12 is used for gripping relief valve 200, and described mechanical arm 13 is used for connecting grinder 300 or cutting tool 400, described
Grinder 300 or cutting tool 400 are used for keeping in repair relief valve 200.Safety valve grinding machine 300 control is integrated in maintenance platform,
Save electric cabinet, directly manipulate on the controller, easy to operate, grinder conveniently moving.
Described three relief valve fixtures 12 form three stations for safe operation valve, described machine around mechanical arm 13
The instrument that tool arm carries can gradually move to three stations and carry out corresponding operating.Described three stations are in the same radius of gyration
On, three stations, on the same radius of gyration, do not need after valve automatic centering to adjust the mechanical arm radius of gyration, improve efficiency.
Described three stations include the first station 16, the second station 17 and are located between the first station 16 and the second station 17 the
Three stations 18, described first station 16 apart from 3rd station 18 distance and the second station 17 apart from 3rd station 18 distance not
With thus realizing three station operations simultaneously and not producing interference.I.e. the center between the first station 16 and the second station 17 is (logical
Hole 120) line be not orthogonal to leading edge or the back edge at top 112, thus mechanical arm carries maintenance tool in the first work
During 16 work of position, do not affect to touch the dismounting of relief valve or other work on the second station 17.Three relief valve fixture 12 cloth
Mode of putting can achieve that relief valve 200 dismounting does not produce interference and interferes with grinding operation simultaneously.Must be by machine during Switch of working position
Tool arm 13 rises to highest order, then just can drive revolution, press upon grinding by mistake station button then mechanical arm 13 first rise and not
It is revolution, prevent grinder 300 and mechanical arm 13 from damaging.
Described can stable holding relief valve device 100 except mechanical arm 13 part is by automatically controlled driving, can stable holding
The device of relief valve also includes hydraulic power 14, and hydraulic power 14 utilizes the motion of liquid flow driving relief valve fixture 12.Institute
State relief valve fixture 12 and be provided with pressure transducer (not shown), report after pressure transducer reaches propulsive force and the thrust of setting
Hydraulic power 14 is cut off in alert prompting simultaneously, and propulsive force and thrust are adjustable.
The top layout of described hoistable platform 11 has gas source interface 19, power interface 20 and hydraulic spanner interface 21.Hydraulic pressure
Spanner interface 21 is connected with hydraulic spanner 58, and hydraulic spanner 58 can assist and complete the dismounting such as bolt on relief valve 200.Maintenance platform
Periphery is disposed with source of the gas, power supply and hydraulic spanner interface, such as needs pneumatic, electric tool and hydraulic spanner can be connected with interface, makes
With conveniently.Described hoistable platform 11 also includes the height adjustable structure 22 being connected between top 112 and bottom 111, described height
Degree adjustment structure 22 is used for adjusting the height at top 112.Described height adjustable structure 22 includes intersecting the first oblique of setting
Plate 221 and the second swash plate 222, the centre position of described first swash plate 221 and the second swash plate 222 is respectively provided with connecting hole 223, institute
State the first swash plate 221 and the second swash plate 222 is fixed together through connecting hole 223.One end of described first swash plate 221 is even
It is connected to top 112 other end and be connected to bottom 111.One end of described second swash plate 222 is connected to top 112 other end and is connected to
Bottom 111.Height adjustable structure 22 also includes clamping body (not shown), carries out under operator need to hoistable platform 11
During relevant work, prevent hydraulic power to lose efficacy, directly depress to be pressed onto operator.Can during height adjustable structure 22 valve operation
Adjust whole height so as to be adjusted to most suitable operation and observation place, convenient working.
Described relief valve fixture 12 includes horizontally disposed mounting disc 121, is arranged in mounting disc 121 and is vertically arranged
Three hold assemblies 122, described three hold assemblies 122 are uniformly distributed along the circumferencial direction of mounting disc 121, each clamping part
The angle that part 122 connects the mounting disc center of circle with adjacent another hold assembly 122 is 120 °.Each hold assembly 122 includes permissible
Pawl 123 along what radial direction moved, each hold assembly 122 also includes the paw for pushing down relief valve in above-below direction
124.Described three hold assemblies 122 pawl 123 simultaneously towards near the motion of the center of circle of mounting disc 121, thus in mounting disc
Relief valve 200 is clamped on 121 radial direction.Described three hold assemblies 122 pawl 123 simultaneously away from mounting disc
121 center of circle motion, thus unclamp relief valve 200.
The paw 124 of described three hold assemblies 122 moves downward simultaneously, thus pushing down relief valve in the vertical direction
200, the paw 124 of described three hold assemblies 122 moves simultaneously upwards, thus unclamping relief valve 200 in the vertical direction.Often
One hold assembly 122 also includes single-acting cylinder 125 and pawling that single-acting cylinder bottom 125 is connected positioned at mounting disc 121 lower section
123 and the vertical bar 127 that is connected to single-acting cylinder 125 top.Described paw 124 includes the fixed part in cuboid
1241 and self-fixed department 1241 extend the butting section 1242 being formed, described butting section 1242 following for tabular, described support
Be tilted down above relying part 1242 inclined-plane of extension.Described paw 124 is arranged in vertical bar 127 in rotatable manner, from
And when placing relief valve, neatly can rotate the butting section 1242 of paw 124 to rear, be very easy to relief valve
Placement.Spiral of Archimedes principle is followed in three 123 transmissions of pawling, and realizes three 123 concentric equidistance motions of pawling.
Described fixed part 1241 is provided with the screwed hole 1243 passing through for vertical bar 127, described vertical bar 127 be provided with
The external screw thread of screwed hole cooperation.The butting section 1242 of described paw 124 can rotate around vertical bar 127.Each hold assembly
122 also include in the middle of three single-acting cylinders 125 and are located at the parcel 128 of mounting disc 121 lower section and are located at parcel 128
The hydraulic motor 129 of lower section, described hydraulic motor 129 drives three vertical bars 127 to take exercises with paw 124.Described pushing away is grabbed
There is on 123 some projections 1231 extending downwardly and the groove 1232 between adjacent projections 1231, described parcel 128
There are some some annulus 1281 expanding round the parcel center of circle, described pawl 123 projection 1231 in order to accurate movement and solid
Determine to the annulus 1281 of corresponding parcel 128.
Described mounting disc 121 includes three cards of formation that stretch out in cylindrical disk body 1211 and from disk body 1211
Hold portion 1212, the angle that adjacent holding section 1212 connects the center of circle is 120 °.Each holding section 1212 have two snap arm 1213 with
And it is located at the middle draw-in groove 1214 of two snap arm 1213, described draw-in groove 1214 extends internally and insertion disk body 1211 always, described
Vertical bar 127 is located in draw-in groove 1214.
The device 100 of stable holding relief valve can also include four wheels 23 being arranged on lifting platform bottom, described four
Wheel 23 be arranged on four of hoistable platform 11 bottom 111 diagonal on.The wheel 23 with secondary transfer for the whole machine, can be in lifting not side
Just and use in the case of limited space, place to use is transferred to by manpower.
As shown in Figure 5 and Figure 6, described mechanical arm 13 includes the vertical arm 131 and right angle setting water to vertical arm 131
Flat arm 132, described horizontal arm 132 also has the union joint 133 positioned at its front end.Described vertical arm 131 can along oneself
Vertically axial line rotation, described horizontal arm 132 can move along the vertical direction along vertical arm 131, and described union joint 133 is permissible
A position along vertical arm 131 is moved along the longitudinal direction, described union joint 133 can vertically move, move forward and backward and
Circular-rotation.Described union joint 133 is used for connecting grinder 300 or cutting tool 400, described grinder 300 or turning
Instrument 400 is used for keeping in repair relief valve 200, and the centre of described relief valve fixture 12 is additionally provided with through hole 120, and described through hole 120 is used for
It is passed through liquid or gas to relief valve 100 thus verifying relief valve 200.Rotatable, moving up and down and move forward and backward three
Degree-of-freedom manipulator, band is upper and lower and spacing in front and back, and speed is adjustable, and front end can attachment security valve grinding machine 300 or cutting tool
Vertical connecting plates 134 moving up and down are provided with described vertical arm 131, described vertical connecting plates 134 are pacified
Equipped with horizontal connecting plate 135, described horizontal arm 132 can move on horizontal plate 135 along the longitudinal direction.Described vertical arm 131
Top is provided with vertical servomotor 136, and the bottom of described vertical arm 131 is provided with hydraulic gyration actuator 137, described vertical
Servomotor 136 is used for driving vertical connecting plates 134 to move along the vertical direction, and described hydraulic gyration actuator 137 is used for driving
Vertical arm 131 is along the vertical axial line rotation of oneself.Described hydraulic gyration actuator 137 is driven by hydraulic power 14 makees rotation
Described horizontal arm 132 includes the horizontal servo motor 138 and the union joint 133 being located at its front end positioned at its rear end,
Described horizontal servo motor 138 moves along the longitudinal direction for drive connection 133.Described union joint 133 has vertically side
To the vertical through hole 1331 running through union joint, described vertical through hole 1331 is used for the peace of grinder 300 or cutting tool 400
Described relief valve fixture 12 includes three fixtures, and described mechanical arm 13 realizes grinder 300 or cutting tool
The revolution of 400 3 stations.The size dimension of described three fixtures is different, such that it is able to place the safety of different size respectively
Valve 200.The vertical axial line of three fixtures is located on the same circumference with the vertical axial line of vertical arm 131 as the center of circle respectively.
Three fixtures are located at middle size on circumference greatly, and on circumference, the size on both sides is little.
As depicted in figs. 1 and 2, the top 112 of described hoistable platform 11 includes load plate 1121 and covers above load plate 1121
Cover plate 1122, described load plate 1121 include base plate 1123, the surrounding coaming plate 1124 extending upward from base plate 1123 surrounding, with
And the host cavity 1125 being surrounded by base plate 1123 and surrounding coaming plate 1124.
As shown in Fig. 1 and Fig. 9, the device 100 of stable holding relief valve can also include cable controller 24 and controlled in wireless
Device 25, described cable controller 24 is installed on hoistable platform 11.Described wireless controller 25 has three buttons 251, pins three
Individual button 251 union joint 133 is automatically brought to tram, and union joint 133 puts in place and do not reoperate.Described wireless controller 25 and having
Both lane controllers 24 can only be using one of them, and that is, wireless controller 25 and cable controller 24 interlock.Whole machine everything
By remote central controller control, controlled in wireless, convenient, flexible, have the controller of wired connection, both are only using it simultaneously
One, can interlock.
As shown in figure 1, the multi-functional maintenance 100 of relief valve can also be provided with roughness on the top 112 of lifting platform 11
Detector 51, sodium vapor lamp and optical flat 52, valve rod flexibility verifying attachment 53, valve rod straightener 54, hydraulic bench vice 55, V-block 56,
And tool cart 57.Roughness instrument 51 realizes the quantitative analyses of valve seal surface roughness.Sodium vapor lamp and optical flat 52 realize valve
The qualitative analyses of door sealing facial plane degree.The accurate measurement of valve rod flexibility realized by valve rod flexibility verifying attachment 53.Valve rod is rectified
Straight device 54 realizes valve rod aligning.Hydraulic bench vice 55 auxiliary dismounts some parts, such as thread type safety valve.V-block 56 is placed and is treated
It is also possible to auxiliary is dismantled, V-type bayonet socket can block relief valve outlet(discharge) flange to detection valve.Equipped with grinding phase inside tool cart 57
Close material, such as abrasive disk, grinding agent, sand paper etc..Said apparatus can improve efficiency, saves manpower, improves relief valve maintenance matter
As shown in fig. 7, grinder 300 includes two motors 301 of side mounted thereto, installation abrasive disk thereunder
302 and be connected to the drive link 303 between two motors 301 and abrasive disk 302.Two motors 301 make abrasive disk respectively
302 with rotation and eccentric can turn, so that grinding fully.
As shown in figure 8, cutting tool 400 include arranging cutter tip 401 thereunder, are disposed there above for pacifying
It is filled to the clamping part 402 of mechanical arm 13 and be arranged on the adjustment flange 403 between cutter tip 401 and clamping part 402.
Adjustment flange 403 can be adjusted to turning cutter head.
The present invention is not limited to above-mentioned specific embodiment, those of ordinary skill in the art from above-mentioned design,
Without performing creative labour, done a variety of conversion, it is within the scope of the present invention.