Relief valve is a kind of automatic valve, and it is not by any external force, but utilizes the power of medium itself
Discharge the fluid of a load quantity, in case pressure exceedes predetermined safety value in locking system.When pressure recovers
After Zheng Chang, valve row again is closed and stops medium to continue to flow out.Relief valve is used for pressure vessel, manometer tube
Road, by devices such as hot pot stoves, for blast being occurred because of system overpressure by protection device and damaging, to setting
Received shipment row and personal security play important protective effect.
After relief valve uses a period of time, owing to many reasons makes the sealing surface of relief valve there will be different journey
The damage of degree and cause relief valve that leakage in various degree occurs.It is thus desirable to the relief valve that leakage occurs
Carry out breakdown maintenance, after maintenance, again relief valve is carried out pressure checking.Sealing surface of safety valve is through repeatedly
After reconditioning, its physical dimension can not meet seal request, then need to be machined out valve base of safety valve sealing surface.
The situation of maintenance relief valve is as follows the most both at home and abroad:
1. cannot effectively fix relief valve when workshop breakdown maintenance, cause relief valve to disintegrate, assemble very
Difficulty, even occurs that larger caliber valve is toppled over during disintegrating and assembling and injured the peace of operating personnel by a crashing object
Full accident occurs.
Note: bore its weight of relief valve more than DN250 is above greatly 200Kg, highly more than 1.5 meters.
2. sealing surface of safety valve lapping mode is for carrying out hand lapping with grinding flat plate, and this operating type is imitated
Rate is low, operating personnel's labor intensity is big；
Such as: the relief valve that an entablature footpath is DN200, valve base sealing surface damage is serious, hand lapping spool
And the time of sealing surface of seat often will be more than 4 hours, an operating personnel at most can only repair 2 every day
To 3 relief valve.
3. relief valve repair quality is often relevant to operating personnel proficiency level, and relief valve maintenance is " disposable
Qualification rate " cannot effectively improve, cause batch to do over again and have a strong impact on maintenance progress.
4. valve base of safety valve occurs bigger defect to need during machining needs special lathe and must make special
Frock clamp fixed valve, this mode is costly and maintenance cycle is long.
Utility model content
Technical problem to be solved in the utility model is: provide a kind of height adjustable relief valve to tie up
For solving above-mentioned technical problem, the technical solution of the utility model is:
A kind of height adjustable safety valve maintenance platform, it includes hoistable platform, relief valve fixture and machinery
Arm, wherein said hoistable platform includes for installing to ground bottom and being oppositely arranged with bottom
Top, described relief valve fixture and mechanical arm are mounted on the top of hoistable platform, described relief valve folder
Tool is used for gripping relief valve, and described mechanical arm is used for connecting grinder or cutting tool, described
Grinder or cutting tool are used for keeping in repair relief valve, and described hoistable platform also includes being connected to top and the end
Height adjustable structure between portion, described height adjustable structure is for adjusting the height at top.
Compared with prior art, this utility model has the beneficial effect that: during relief valve operation, scalable is overall
Highly so that it is be adjusted to most suitable operation and observation place, convenient working.
This utility model further improves as follows:
Further, described height adjustable structure includes intersect the first swash plate arranged and the second swash plate,
The centre position of described first swash plate and the second swash plate is respectively provided with connecting hole, described first swash plate and second
Swash plate is fixed together through connecting hole.
Further, one end of described first swash plate is connected to the top other end and is connected to bottom.
Further, one end of described second swash plate is connected to the top other end and is connected to bottom.
Further, described mechanical arm includes vertical arm and the right angle setting horizontal arm to vertical arm,
Described horizontal arm also has the union joint being positioned at its front end, and described vertical arm can be along the vertical axes of oneself
Heart line rotation, described horizontal arm can move along the vertical direction along vertical arm, and described union joint can edge
The position vertical arm is moved along the longitudinal direction, described union joint can vertically move, seesaws,
And circular-rotation, described union joint is used for connecting grinder or cutting tool.
Further, described vertical arm is provided with vertical connecting plate moving up and down, described vertically connects
Being provided with horizontal connecting plate on fishplate bar, described horizontal arm can move on horizontal plate along the longitudinal direction.
Further, the top of described vertical arm is provided with vertical servomotor, the bottom of described vertical arm
Being provided with hydraulic gyration actuator, described vertical servomotor is used for driving vertical connecting plate along the vertical direction
Mobile, described hydraulic gyration actuator is for driving vertical arm along the vertical axial line rotation of oneself.
Further, described horizontal arm includes the horizontal servo motor being positioned at its rear end and is positioned at its front end
Union joint, 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, described perpendicular
Clear opening is used for grinder or the installation of cutting tool.
Further, described relief valve fixture includes three fixtures, described mechanical arm realize grinder or
The revolution of three stations of person's cutting tool.
Detailed description of the invention
With embodiment, this utility model is further illustrated below in conjunction with the accompanying drawings.
As shown in Figures 1 to 9, for meeting the maintenance of one of the present utility model height adjustable relief valve
Platform 100, it includes 11, three relief valve fixtures 12 of hoistable platform and mechanical arm 13.
Described hoistable platform 11 includes for installing to ground bottom 111 and relative with bottom 111 setting
The top 112 put, described three relief valve fixtures 12 and mechanical arm 13 are mounted on hoistable platform 11
Top 112.Described relief valve fixture 12 is used for gripping relief valve 200, described mechanical arm 13
For connecting grinder 300 or cutting tool 400, described grinder 300 or cutting tool 400 are used
In maintenance relief valve 200.Safety valve grinding machine 300 controls to be integrated in maintenance platform, saves electric cabinet, directly
It is connected on controller upper-pilot, easy to operate, grinder conveniently moving.
Described three relief valve fixtures 12 are used for operating three works of relief valve around mechanical arm 13 composition
Position, the instrument that described mechanical arm carries can gradually move to three stations and carry out corresponding operating.Described
Three stations are on the same radius of gyration, and three stations are on the same radius of gyration, after valve automatic centering
Need not adjust the mechanical arm radius of gyration, improve efficiency.Described three stations include the first station 16,
Two stations 17 and the 3rd station 18 between the first station 16 and the second station 17, described
The distance of one station 16 distance the 3rd station 18 is with the distance of the second station 17 distance the 3rd station 18 not
With, thus realize the operation simultaneously of three stations and do not produce interference.I.e. first station 16 and the second station 17
Between the line at center (through hole 120) be not orthogonal to leading edge or the back edge at top 112, thus machine
Mechanical arm carries maintenance tool when the first station 16 works, and does not affect and touches safety on the second station 17
The dismounting of valve or other work.Three relief valve fixture 12 arrangements can realize relief valve 200 dismounting with
Grind operation simultaneously and do not produce interference and interfere.Must mechanical arm 13 be risen to the highest during Switch of working position
Position, the most just can drive revolution, presses station button then mechanical arm 13 the most by mistake and first rises rather than return
Turn, prevent grinder 300 and mechanical arm 13 from damaging.
Described height adjustable safety valve maintenance platform 100 except mechanical arm 13 part is by automatically controlled driving,
Height adjustable safety valve maintenance platform also includes that hydraulic power 14, hydraulic power 14 utilize liquid flowing to drive
The motion of dynamic relief valve fixture 12.Described relief valve fixture 12 is provided with pressure transducer (not shown), when
Pressure transducer reach set propulsive force and thrust after alarm cut off hydraulic power 14 simultaneously, push away
Enter power and thrust is adjustable.
The top layout of described hoistable platform 11 has gas source interface 19, power interface 20 and hydraulic spanner to connect
Mouth 21.Hydraulic spanner interface 21 is connected with hydraulic spanner 58, and hydraulic spanner 58 can assist safety
The dismounting such as bolt on valve 200.Maintenance platform periphery is disposed with source of the gas, power supply and hydraulic spanner interface, as needed
Pneumatic, electric tool and hydraulic spanner can be connected with interface, easy to use.Described hoistable platform 11 also wraps
Include the height adjustable structure 22 being connected between top 112 and bottom 111, described height adjustable structure 22
For adjusting the height at top 112.Described height adjustable structure 22 first arranged that include intersecting is oblique
Plate 221 and the second swash plate 222, the centre position of described first swash plate 221 and the second swash plate 222 has respectively
Connecting hole 223, described first swash plate 221 and the second swash plate 222 is had to be fixedly connected on through connecting hole 223
Together.One end of described first swash plate 221 is connected to top 112 other end and is connected to bottom 111.Described
One end of second swash plate 222 is connected to top 112 other end and is connected to bottom 111.Height adjustable structure
22 also include clamping body (not shown), when operator need to hoistable platform to carry out corresponding work 11 times
When making, prevent hydraulic power to lose efficacy, be directly pressed onto operator.Height adjustable structure 22 valve
Scalable whole height during operation so that it is 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 also
Three hold assemblies 122 being vertically arranged, described three hold assemblies 122 are along the circumference of mounting disc 121
Direction is uniformly distributed, and each hold assembly 122 connects the mounting disc center of circle with another hold assembly 122 adjacent
Angle be 120 °.Each hold assembly 122 includes to pawl 123 along what radial direction moved,
Each hold assembly 122 also includes the paw 124 for pushing down relief valve at above-below direction.Described three folders
That holds parts 122 pawls 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 the radial direction of 121.The 123 simultaneously courts of pawling of described three hold assemblies 122
The center of circle motion of remotely mounted dish 121, thus unclamp relief valve 200.
The paw 124 of described three hold assemblies 122 moves downward simultaneously, thus presses in the vertical direction
Living relief valve 200, the paw 124 of described three hold assemblies 122 moves upward simultaneously, thus up and down
Relief valve 200 is unclamped on direction.Each hold assembly 122 also includes being positioned at the nonoculture below mounting disc 121
123 and be connected to single-acting cylinder 125 and push up are pawled with what cylinder 125 was connected with bottom single-acting cylinder 125
The vertical bar 127 in portion.Described paw 124 includes the fixed part 1241 in cuboid and self-retaining portion
1241 extend formed butting sections 1242, for tabular below described butting section 1242, described against
The above inclined-plane extended that is tilted down in portion 1242.Described paw 124 is arranged on vertically in rotatable manner
On bar 127, thus when placing relief valve, can neatly the butting section 1242 of paw 124 be rotated
To rear, it is very easy to the placement of relief valve.
Described fixed part 1241 is provided with the screwed hole 1243 passed for vertical bar 127, described vertical bar
127 are provided with the external screw thread coordinated with screwed hole.The butting section 1242 of described paw 124 can be around perpendicular
Straight-bar 127 rotates.Each hold assembly 122 also includes being positioned in the middle of three single-acting cylinders 125 and being positioned at
Parcel 128 below mounting disc 121 and be positioned at the hydraulic motor 129 below parcel 128, described liquid
Pressure motor 129 drives three vertical bars 127 to take exercises with paw 124.Described push away to grab have on 123
Some projections 1231 downwardly extended and the groove 1232 between adjacent projections 1231, described dish
Silk 128 has some some annulus 1281 expanded round the parcel center of circle, described in pawl 123 projection 1231
In order to accurately to move and to be fixed on the annulus 1281 of corresponding parcel 128.
Described mounting disc 121 includes in cylindrical disk body 1211 and stretches out shape from disk body 1211
Three holding sections 1212 become, it is 120 ° that adjacent holding section 1212 connects the angle in the center of circle.Each clamping
Portion 1212 has two snap arm 1213 and is positioned at the draw-in groove 1214 in the middle of two snap arm 1213, described card
Groove 1214 extends internally and through disk body 1211 always, and described vertical bar 127 is positioned at draw-in groove 1214.
Height adjustable safety valve maintenance platform 100 also includes four wheels 23 being arranged on bottom lifting platform,
Described four wheels 23 are arranged on four diagonal angles of bottom hoistable platform 11 111.Complete machine band auxiliary turns
The wheel 23 moved, can use in the case of lifting inconvenience and limited space, transfer to make by manpower
As shown in Figure 5 and Figure 6, described mechanical arm 13 includes that vertical arm 131 and right angle setting are to vertically
Horizontal arm 132 on arm 131, described horizontal arm 132 also has the union joint 133 being positioned at its front end.Institute
Stating vertical arm 131 can be along the vertical axial line rotation of oneself, and described horizontal arm 132 can be along perpendicular
Straight-arm 131 moves along the vertical direction, and described union joint 133 can be along an edge, position of vertical arm 131
Fore-and-aft direction moves, and described union joint 133 can vertically move, seesaw and circular-rotation.
Described union joint 133 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, and the centre of described relief valve fixture 12 is additionally provided with through hole 120,
Described through hole 120 be used for being passed through liquid or gas in relief valve 100 thus verify relief valve 200.Can
Revolution, moves up and down and movable three-freedom mechanical arm, carries upper and lower and the most spacing, and speed can
Adjusting, front end can attachment security valve grinding machine 300 or cutting tool 400.
Vertical connecting plate 134 moving up and down, described vertical connecting plate are installed in described vertical arm 131
Being provided with horizontal connecting plate 135 on 134, described horizontal arm 132 can on horizontal plate 135 along the longitudinal direction
Mobile.The top of described vertical arm 131 is provided with vertical servomotor 136, the end of described vertical arm 131
Portion is provided with hydraulic gyration actuator 137, and described vertical servomotor 136 is used for driving vertical connecting plate
134 move along the vertical direction, and described hydraulic gyration actuator 137 is used for driving vertical arm 131 along oneself
Vertical axial line rotation.Described hydraulic gyration actuator 137 is driven by hydraulic power 14 makees rotation rotation
Described horizontal arm 132 includes the horizontal servo motor 138 being positioned at its rear end and is positioned at the company of its front end
Joint 133, described horizontal servo motor 138 moves along the longitudinal direction for drive connection 133.Described
Union joint 133 has the vertical through hole 1331 running through union joint along the vertical direction, described vertical through hole 1331
For grinder 300 or the installation of cutting tool 400.
Described relief valve fixture 12 include three fixtures, described mechanical arm 13 realize grinder 300 or
The revolution of 400 3 stations of person's cutting tool.The size dimension of described three fixtures is different, thus can
To place the relief valve 200 of different size respectively.The vertical axial line of three fixtures lays respectively at vertical arm
The vertical axial line of 131 is on the same circumference in the center of circle.Three fixtures are positioned on circumference middle size greatly,
It is positioned at the size on both sides on circumference little.
As depicted in figs. 1 and 2, the top 112 of described hoistable platform 11 includes load plate 1121 and covers
Cover plate 1122 above load plate 1121, described load plate 1121 includes base plate 1123, from base plate 1,123 4
The surrounding coaming plate 1124 extended upward in week and the receipts surrounded by base plate 1123 and surrounding coaming plate 1124
Cavity volume 1125.
As shown in Fig. 1 and Fig. 9, height adjustable safety valve maintenance platform 100 also includes lane controller
24 and wireless controller 25, described cable controller 24 is installed on hoistable platform 11.Described controlled in wireless
Device 25 has three buttons 251, pins three button 251 union joints 133 and is automatically brought to tram,
Union joint 133 puts in place and does not reoperates.Both described wireless controller 25 and cable controller 24 can only make
With one of them, i.e. wireless controller 25 and cable controller 24 interlocks.Complete machine everything by
Centre remote controller controls, and controlled in wireless is convenient, flexible, has the controller of wired connection simultaneously, and both are only
One can be used, can interlock.
As it is shown in figure 1, the multi-functional maintenance of relief valve 100 can also be pacified on the top 112 of lifting platform 11
Equipped with roughness instrument 51, sodium vapor lamp and optical flat 52, valve rod flexibility verifying attachment 53, valve rod aligning dress
Put 54, hydraulic bench vice 55, V-block 56 and tool cart 57.Roughness instrument 51 realizes valve
The quantitative analysis of sealing surface roughness.Sodium vapor lamp and optical flat 52 realize the qualitative analysis of valve sealing face flatness.
Valve rod flexibility verifying attachment 53 realizes the accurate measurement of valve rod flexibility.Valve rod straightener 54 realizes
Valve rod is aligned.Hydraulic bench vice 55 auxiliary dismounts some parts, such as thread type safety valve.V-block 56 is placed
Valve to be detected, it is also possible to auxiliary dismounting, V-type bayonet socket can block relief valve outlet(discharge) flange.Tool cart
Equipped with grinding correlative inside 57, such as abrasive disk, grinding agent, sand paper etc..Said apparatus can improve
Efficiency, saves manpower, improves relief valve repair quality.
As it is shown in fig. 7, grinder 300 includes two motors 301 of side mounted thereto, is arranged under it
Side abrasive disk 302 and be connected to the drive link 303 between two motors 301 and abrasive disk 302.
Two motors 301 make abrasive disk 302 can turn with rotation and bias, so that grind fully respectively.
As shown in Figure 8, cutting tool 400 include being arranged on cutter tip 401 below, are arranged on it
Top is used for installation and to the clamping part 402 of mechanical arm 13 and is arranged on cutter tip 401 and clamping
Adjustment flange 403 between portion 402.Adjust flange 403 can turning cutter head be adjusted.
This utility model is not limited to above-mentioned specific embodiment, and those of ordinary skill in the art is from upper
State design to set out, without performing creative labour, done all conversion, all fall within this utility model
Protection domain within.