CN202053136U - Valve grinding and repairing machine tool - Google Patents
Valve grinding and repairing machine tool Download PDFInfo
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- CN202053136U CN202053136U CN2011200301180U CN201120030118U CN202053136U CN 202053136 U CN202053136 U CN 202053136U CN 2011200301180 U CN2011200301180 U CN 2011200301180U CN 201120030118 U CN201120030118 U CN 201120030118U CN 202053136 U CN202053136 U CN 202053136U
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Abstract
The utility model provides a valve grinding and repairing machine tool, comprising a workbench. A column is disposed at each of two sides of the workbench. Top ends of the two columns are connected with a lifting crossbeam, on which a lifting motor is arranged. The lifting motor is connected with a lifting screw. A frock clamp is arranged on the workbench. The valve grinding and repairing machine tool is characterized in that each of the two columns is sleeved with a column sleeve thereon; the two column sleeves are connected via a backboard; the lower end of the lift screw is screwed in a lifting nut fixed on the backboard; a box body is fixedly arranged on support arms on the backboard; a transmission motor is disposed above the box body; a shaft of the transmission motor is extended to be connected with a transmission shaft which penetrates through the box body; and the lower end of the transmission shaft is rigidly and fixedly connected with a grinding mechanism. High in load carrying capacity and rigidity and good in strength, the valve grinding and repairing machine tool of the utility model enables repair welding of seal surfaces of valves, so that the process from repair welding and coarse grinding to precise grinding is completed.
Description
Technical field
The utility model is specifically related to a kind of valve sealing face maintenance of equipment, particularly a kind of corase grind and correct grinding function compatibility, valve grinding maintenance machine tool that can the valve sealing face of grinding after stainless steel electrode, carbide electrode built-up welding.
Background technology
The structural principle and the installation form of the facility of the existing valve maintenance of China are at present had nothing in common with each other, the portable valve that has support to be installed on the valve keeps in repair grinder, also there is valve to be placed on the facility of maintenance under the cantilever, also have motor to be installed on the cover of being furnished with bearing, be directly fixed on the directly-mounting type valve repairing machine (these three kinds of facility are designated hereinafter simply as valve and repair grinder) on the valve, as utility model patent 00249416.7, utility model patent 200720086019, utility model patent 200720193798.1, in general, these class facility are practical and effective for the grinding of valve sealing face, but also exist some shortcomings, too simple as structure, mechanical performance and rigidity are relatively poor, working strength is relatively poor, can only grind maintenance to valve sealing face, and can not (be called for short: valve reconditioning bed) roughly grind the process that precision is ground from built-up welding, finish the built-up welding reparation of valve sealing face as valve grinding maintenance machine tool.
Summary of the invention
The utility model provides a kind of valve grinding maintenance machine tool, purpose is to solve the prior art problem, the valve grinding that a kind of bearing load is big, rigidity is big, intensity is good maintenance machine tool is provided, this lathe can carry out the built-up welding reparation to valve sealing face, and finishes from built-up welding and roughly grind the process that precision is ground.
The utility model technical scheme that adopts of dealing with problems is:
Valve grinding maintenance machine tool, has workbench, the workbench both sides are respectively equipped with a root post, the upper end of two root posts is connected with hoisting cross beam, and hoisting cross beam is provided with lifting motor, and lifting motor is connected with elevating screw, workbench is provided with frock clamp, it is characterized in that: be arranged with the column sleeve on two root posts respectively, be connected with backboard between two column sleeves, the lower end of elevating screw is screwed in the lifting nut fixing on the backboard; Be installed with casing on the supporting arm of backboard, the casing top is provided with driving motor, and the shaft extension of driving motor is connected with the power transmission shaft that passes casing; The power transmission shaft lower end rigidly fixes and is connected with grinding mechanism.
The shaft extension of above-mentioned driving motor is connected with shaft coupling, and the shaft coupling below is connected with a female splined shaft, and the external splines cooperation of power transmission shaft upper end is embedded in described female splined shaft; Also have feed arrangement: feed arrangement includes has externally threaded drive shaft sleeve, the inwall of drive shaft sleeve is tight with at the outer ring of transmission shaft bearing, the inner ring of transmission shaft bearing and power transmission shaft close-fitting, be installed with sliding sleeve on the casing, sliding sleeve is set in outside the drive shaft sleeve, and is provided with keyway between sliding sleeve and the drive shaft sleeve and cooperates; The outer spiral shell of drive shaft sleeve is provided with feed nut, fixed cover is provided with the feeding turbine outside the first half of feed nut, the feed worm engagement that is provided with on feeding turbine and the casing, the end of feed worm is provided with handwheel, the inner ring close-fitting of a latter half of feed nut and a bearing, the outer ring of this bearing and the bearing block close-fitting that is installed on the sliding sleeve.
The advantage of above-mentioned design is that worm gear has auto-lock function, withdrawing can not occur, rotates through worm gear and the transmission of screw thread two-stage, reaches steadily, accurately controls feeding, guarantees the ground effect of lathe.
Described grinding mechanism has the mill bar, the mill bar rigidly fixes with the lower end of power transmission shaft and is connected, and the lower end of mill bar rigidly fixes and is connected with the plane mill, the even lengthening piece holddown groove that is furnished with of mill outward flange circumference, the lengthening piece is installed in the lengthening piece holddown groove, and lengthening piece end is pivoted with emery wheel with grinding wheel spindle.
For realizing flat surface grinding, described lengthening piece has fitting surface, and the fitting surface of lengthening piece is vertical with grinding wheel spindle, the fitting surface of lengthening piece and the horizontal fitting surface close fit of mill, and grinding wheel spindle is parallel to power transmission shaft.
For realizing the chamfering grinding, described lengthening piece has fitting surface, the fitting surface and the grinding wheel spindle out of plumb of lengthening piece, and the fitting surface of lengthening piece and the horizontal fitting surface close fit of mill, grinding wheel spindle is not parallel to power transmission shaft and tilts outwardly or inwardly.
For realizing spherical grinding, except that spheroid grinding whirligig, described grinding mechanism also has the mill bar, the mill bar rigidly fixes with the lower end of power transmission shaft and is connected, and the lower end of mill bar rigidly fixes and is connected with taper rubbing disc, and the mill periphery is downward-sloping, the cross section of mill is trapezoidal, the even lengthening piece holddown groove that is furnished with of mill mill outward flange circumference, the lengthening piece is installed in the lengthening piece holddown groove, and lengthening piece end is pivoted with emery wheel with grinding wheel spindle.
For realizing disposable installation Wedge Gate Valves, grinding gate valve upper-lower seal face, described frock clamp is the inclined-plane panoramic table, and described inclined-plane panoramic table includes the circular attic base that is fixed on the workbench, and circular attic base top is that pivot is pivoted with upper surface plane inclined dish with the central shaft.
Be the ball seal face after the repair welding of realization grinding ball valve, the local built-up welding, described frock clamp is a spheroid grinding whirligig, described spheroid grinding whirligig has the guide rail support that is installed on the workbench, it is top also to have two taperings that are oppositely arranged, contact held out against ringfeder between two taperings were top, the top end that is arranged on by the power train of variable-frequency motor connection and driving of tapering, another tapering is top to be arranged on the tailstock, the tailstock spiral shell is located at screw mandrel, and screw mandrel is located on the guide rail support.
Be freely rotating before the start of control turning cylinder, power transmission shaft is provided with the shaft lock hole, position with respect to the shaft lock hole is horizontally arranged with lock shaft, the interior end of lock shaft is plugged in the shaft lock hole, the outer end of lock shaft is positioned at outside the casing and is provided with handle, lock shaft passes the endoporus of a spring, and described spring is resisted against between the protruding wall of cabinet wall and lock shaft, and lock shaft is arranged on the motor cabinet.
The beneficial effects of the utility model:
The difference of the valve maintenance grinding machine of the technical solution of the utility model and the valve grinding machine of prior art is:
1, feature difference:
The function that valve is repaiied grinder mainly is to be used for grinding damaging slightly, does not need the valve sealing face of built-up welding, and generally, these class facility are used for valve is carried out running repair and maintenance, and its effect still is good;
Valve reconditioning bed is major function with the grinding, repair than valve that the design concept of grinder is stronger, standard is higher, be directly adopt the scheme of grinding solve valve repair grinder can not the valve sealing face problem of grinding after stainless steel electrode, carbide electrode built-up welding, thereby the valve sealing face after can replacing horizontal lathe and vertical lathe to built-up welding keeps in repair processing;
2, structure difference:
Above-mentioned three kinds of valves are repaiied grinder does not have casing, power transmission shaft is installed on support or the cantilever by sleeve, column is short and small, complete machine is from heavy and light, the centrifugal force that this facility produce in the time of can not resisting grinding, also just can not high accuracy keep in repair large bore valves, especially Wedge Gate Valves, hard seal ball valve and gauge valve;
Valve reconditioning bed is provided with casing, power transmission shaft is sturdy, and workbench is roomy abundant, and column is connected by backboard with sleeve, enough working depths are arranged, lifting freely, this is according to Principle of Grinding and Cutting, and the maintenance maximum gauge valve the time, the grinding resistance that lathe carried designs, so good mechanical property, rigidity is strong, and bistrique can not occur beating and play under the state of rotation at a high speed yet.
3, mill bar structure difference:
Big and little, the long and weak point of mill shank diameter is directly connected to grinding or grinding effect.The design concept that above-mentioned valve is repaiied grinder is exactly the function based on grinding originally, as utility model patent [200720193798] " multi-functional valve repairing machine ", its drive unit with the mill bar adopt adjustable ways of connecting that the Automatic Levelling function is arranged, this just grinder show the feature of intrinsic grinding;
The design concept of valve reconditioning bed is its grinding function of performance, the special valve sealing face of grinding after stainless steel electrode, carbide electrode built-up welding.Realize ground effect, the transmission main shaft of drive unit must be rigidity, nonadjustable with being connected of mill bar, so valve reconditioning bed adopts flange form to connect, can guarantee the concentricity of the two, and it is steady to have strengthened rigidity again.
4, mill is connected difference with the mill bar:
Above-mentioned three kinds of valves are repaiied grinder for the grinding needs to valve sealing face, the mill bar adopts universal the connection with mill, universal effect is faster, more effective than hand lapping work efficiency with respect to the Automatic Levelling of sealing surface, but universal connection is not suitable for embodying being rigidly connected of grinding function;
The mill of valve reconditioning bed adopts the flange form screw rod to be connected with the mill bar, or tapered sleeve adds the screw rod connection, because the grinding of valve reconditioning bed is the stainless steel or the Hardmetal materials of built-up welding on the valve sealing face, uneven by the sealing surface after the built-up welding, gap greatly but interrupted grinding is many, and emery wheel is easy to generate beats and fragmentation, so the combination of mill and mill bar must have extremely strong rigidity, valve reconditioning bed has this advantage just, can resist the grinding resistance that resurfacing welding material produces.
5, the difference of emery wheel application:
What valve was repaiied the grinder use is sand sheet, abrasive disc rather than emery wheel.Sand sheet thin thickness, poor rigidity is that the sand sheet is sticked on the mill as utility model patent 200720193798 " multi-functional valve repairing machine ", or is fixed on the mill with screw, the sand sheet is but done 360 ° of rotations on the flour milling again during the mill rotation.Sand sheet or abrasive disc are polishing and cutting tool, can not replace emery wheel to be used for the working environment of grinding, more are not suitable for the processing behind the valve sealing surface build-up welding;
Valve reconditioning bed is the unlike material according to welding rod, the emery wheel of selecting for use the abrasive material that adapts with it to make, and emery wheel can be done 360 ° of rotations in planetary running, and cooperates with mill and to do rotation and revolution, forms netted grinding.
6, the difference of chamfering grinding:
Valve is repaiied grinder owing to lack grinding function, can not carry out chamfering to valve sealing face, and this is the big defective that valve is repaiied grinder;
Valve reconditioning bed can carry out chamfered to valve sealing face fully by grinding head dedicated, fully shows the powerful grinding power of valve reconditioning bed, embodies the superpower specificity of valve reconditioning bed maintenance valve.
7, the difference of specific function:
Valve reconditioning bed also has milling and boring function, and it is not available that this is that valve is repaiied grinder, as the maintenance of Special valves such as Y type stop valve, birdcage control valve, all needs the milling and the boring function of valve reconditioning bed.
8, the difference of grinding ball function:
Valve is repaiied grinder can't carry out attrition process to spheroid, more can not carry out grinding to the spheroid of built-up welding or repair welding;
After the combination of valve reconditioning bed and spheroid whirligig, can carry out grinding, finish the reparation fully of ball valve the spheroid and the valve seat of the metal seal ball valve of repair welding or part built-up welding.
So:
At present existing valve workover rig type is less, deadweight is light, structure is too simple, function is thin, power is not strong, can only carry out generality grinding and maintenance to damaging the valve sealing face that slightly, does not need built-up welding, even if existing general-purpose grinder is also because of workbench width, working depth, the grinding mechanism isostructuralism reason of lathe, can not satisfy the valve maintenance, the particularly reparation requirement of large bore valves.
And the technical solution of the utility model is valve to be keeped in repair desired lathe height be designed to two columns, and workbench is roomy abundant; Transmission device is set to the variable-frequency motor infinitely variable speeds, and drive socket and power transmission shaft diameter are big, and bearing load is big, and moment of torsion is strong, and rigidity is big, and intensity is good; Feed arrangement is a worm gear drives turning cylinder sleeve screw thread, axially grinding; Grinding mechanism is designed to flat stone mill, conical surface mill and chamfering mill, and mill and emery wheel can be realized revolving round the sun and the planetary netted grinding of rotation, thereby has possessed valve and keep in repair needed multiple grinding function.The utility model is used the function that self has, and is equipped with the spheroid turntable grinding attachment that the utility model comprises, and can keep in repair the spheroid through repair welding, local built-up welding.In addition, the utility model is equipped with other devices, energy grinding mechanical seal ring, sealing ring, sealing gasket and other metal flat workpiece.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a vertical view of the present utility model;
Fig. 3 is a side view of the present utility model;
Fig. 4 is a lifting device structure schematic diagram of the present utility model;
Fig. 5 is an inclined-plane of the present utility model panoramic table structural representation;
Fig. 6 is a flat surface grinding mechanism structure schematic diagram of the present utility model;
Fig. 7 is the vertical view of the utility model flat surface grinding mechanism plane mill;
Fig. 8 is a plane of the present utility model lengthening abrading block schematic diagram;
Fig. 9 is an interior chamfering lengthening abrading block schematic diagram of the present utility model;
Figure 10 is an interior chamfering grinding mechanism structural representation of the present utility model;
Figure 11 is an outer chamfering lengthening abrading block schematic diagram of the present utility model;
Figure 12 is an outer chamfering grinding mechanism structural representation of the present utility model;
Figure 13 is a spheroid grinding mechanism structural representation of the present utility model;
Figure 14 is a spheroid grinding rotating mechanism of the present utility model.
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
As Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, valve grinding maintenance machine tool of the present utility model, has workbench 100, workbench 100 both sides are respectively equipped with column 101, the chassis 102 usefulness screw rods of column 101 bottoms are fixed on the workbench 100 and with taper pin to be reinforced, the upper end of two root posts 100 is connected with hoisting cross beam 103, and the two ends of hoisting cross beam 103 are set in the upper end of two root posts 101, and compresses with locking nut.103 effect is a carrying elevating mechanism shown in Figure 4 on the hoisting cross beam.Be arranged with column sleeve 105 respectively on two root posts 101, column sleeve 105 is provided with column locker 106, so-called column locker 106 is a screw rod that is arranged on the column sleeve 105, the screw rod end is provided with a brake pad, screw screw rod and just can make brake pad be tight against column 101 and column sleeve 105 and column 100 are locked mutually, also can screw screw rod and column sleeve 105 and column 100 be unclamped and column sleeve 105 can be moved up and down on column 100.Connect with backboard 107 between two column sleeves 105, thereby column sleeve 105 and backboard 107 combined completes are on column 101.Be fixed with support arm 108 with screw rod on the backboard 107, the end of support arm 109 is installed with casing 26 with screw rod, and casing 26 tops are provided with driving motor 34, and driving motor 34 is variable-frequency motors, and the shaft extension of driving motor 34 is connected with the power transmission shaft 13 that passes casing 26; The form that power transmission shaft 13 lower ends connect with flange 29 rigidly fixes and connects grinding mechanism 28, can set firmly on the workbench 100 under the grinding mechanism 28 as Fig. 5, frock clamp such as inclined-plane panoramic table or spheroid grinding whirligig shown in Figure 13.Also be provided with electric cabinet 108 on the support arm 109 so that entire equipment is controlled.
Lowering or hoisting gear as shown in Figure 4, hoisting cross beam 103 usefulness clamp nuts 110 are fixed on the column 101, and gear-box 111 usefulness screw rods are fixed on the hoisting cross beam 103; Lifting motor 104 is connected with gear-box 111, master gear 113 on the shaft extension 112 of lifting motor 104 and gear A 114 engagements; Because gear B 115 and gear A 114 are on same gear shaft 116, so two gear 114,115 synchronization actions, the two ends of its shared gear shaft 116 respectively with the set bearing tight fit of gear-box 111, when gear A 114 and gear B 115 actions, gear B 115 and gear C 117 engagements; Plane bearing is housed on the gear-box 111 of gear C 117 belows is connected, it is compressed with clamp nut with rolling bearing and with elevating screw 118 tight fits; Elevating screw 118 belows connect lifting nut 119, and lifting nut 119 is fixedly mounted on the backboard 107.
In brief, so-called lowering or hoisting gear is exactly that the lifting motor 104 that is installed on the hoisting cross beam 103 is connected with elevating screw 118 with a reducing gear train, elevating screw 118 spiral shells are located at lifting nut set on the backboard 107 119, thereby thereby lifting motor 104 just can drive the lifting that the casing 26 that sets firmly on the backboard 107 driving backboards 107 finally drives grinding mechanism 28 like this, and lowering or hoisting gear is mainly used in the elevating movement on a large scale of grinding mechanism 28.
As shown in Figure 1, motor cabinet 33 is installed on the casing 26, the driving motor 34 of frequency conversion is installed on the motor cabinet 33, the shaft extension 35 of driving motor 34 is connected with the first half of shaft coupling 21, the below of the latter half of shaft coupling 21 is connected with a female splined shaft 37, female splined shaft 37 is installed on the internal spline seat 18 with bearing 19 close-fittings, and internal spline seat 18 is installed on the cover plate of casing 26 with screw rod.Power transmission shaft 13 upper ends are provided with external splines 16, and these external splines 16 cooperations are embedded in the internal spline 17 of described female splined shaft 37.Like this, driving motor 34 can drive power transmission shaft 13 and rotate by driving shaft coupling 21, female splined shaft 37 successively, power transmission shaft 13 is connected with interior external splines form with female splined shaft 37, so rotating, can also be driven and the feed that moves up and down by following feed arrangement except being driven by female splined shaft 37.
As shown in Figure 1, feed arrangement includes has externally threaded drive shaft sleeve 7, the inwall of drive shaft sleeve 7 is tight with at the outer ring of transmission shaft bearing 8, the inner ring of transmission shaft bearing 8 and power transmission shaft 13 close-fittings, flanged sliding sleeve 1 is fixed by bolts on the base plate of casing 26, and sliding sleeve 1 is set in outside the drive shaft sleeve 7, and is provided with keyway 120 between sliding sleeve 1 and the drive shaft sleeve 7 and cooperates.Like this, because keyway 120 cooperations make and just can not relatively rotate between drive shaft sleeve 7 and the sliding sleeve 1, but drive shaft sleeve 7 can move up and down, and move up and down owing to the cooperation of transmission shaft bearing 8 makes power transmission shaft 13 to be driven by drive shaft sleeve 7, but can not driving drive shaft sleeve 7, power transmission shaft 13 rotates.
Drive shaft sleeve 7 outer spiral shells are provided with feed nut 4, be provided with feeding turbine 5 with the mode fixed cover that keyway cooperates and lock screw is fixing outside the first half of feed nut 4, the inner ring close-fitting of a latter half of feed nut 4 and a bearing 3, the first half close-fitting of the outer ring of this bearing 3 and bearing block 32, the latter half of bearing block 32 is arranged on the sliding sleeve 1.Feed worm 6 engagements of horizontally set on feeding turbine 5 and the casing 26, the end of feed worm 6 is provided with handwheel 121 (as Fig. 2, shown in Figure 3).
Like this, rotate handwheel 121, feed worm 6 rotates, the feed nut 4 that drive connects as one rotates, feed nut 4 since with the cooperating of bearing 3, bearing block 32, sliding sleeve 1, feed nut 4 can only rotate and can not move up and down, so feed nut 4 drives the turning cylinder sleeve 7 that screws togather with it and moves up and down, move up and down thereby drive power transmission shaft 13, finally drive power transmission shaft 13 and rigidly fix and connect grinding mechanism 28 feed that moves up and down.
Thereby above-mentioned feed arrangement is used for the accurate grinding of the accurate among a small circle feed realization of grinding mechanism 28 to valve.The advantage of above-mentioned design is that worm gear has auto-lock function, withdrawing can not occur, rotates through worm gear and the transmission of screw thread two-stage, reaches grinding mechanism and steadily, accurately controls feeding, guarantees the ground effect of lathe.
Be freely rotating before the start of control power transmission shaft, power transmission shaft is provided with shaft lock mechanism.Present embodiment axis latch mechanism is located at the shaft coupling position, and structure is identical with effect.On shaft coupling 21, be provided with shaft lock hole 22, position with respect to shaft lock hole 22 is horizontally arranged with lock shaft 24, the interior end of lock shaft 24 can be plugged in the shaft lock hole 22, the outer end of lock shaft 24 is positioned at outside the motor cabinet 33 and is provided with handle 27, lock shaft 24 passes the endoporus of a spring 25, and described spring 25 is resisted against between the protruding wall set on motor cabinet 33 inwalls and the lock shaft 24.Lock shaft 24 is connected with locking beam barrel 23.Locking beam barrel 23 adopts approach screw to be connected with holder 36, holder 36 is welded on the motor cabinet 33 like this, before the start, spring 25 contact lock shafts 24 are plugged in the shaft lock hole 22 the interior end of lock shaft 24, prevent freely rotating of shaft coupling 21 and final prevention power transmission shaft 13.When needing start, thereby thereby pulling handle 27 rotates rotation lock mandrel 24 rotational lock beam barrels 23 and makes its outside motion, and the end of lock shaft 24 leaves shaft lock hole 22, thus power transmission shaft 13 can freely rotate.Once more lock shaft 24 is inwardly screwed in when changing mill bar, bistrique or emery wheel and head in the shaft lock hole 22.
As shown in Figure 6, described grinding mechanism 28 has mill bar 281, and the lower end of mill bar 281 and power transmission shaft 13 rigidly fixes with as shown in Figure 1 flange 29 and is connected, and the lower end of mill bar 281 connects with taper sleeve type or the flange form connection rigidly fixes and is connected with mill.
Fig. 6,7 is depicted as and is used for the grinding flat work pieces, comprises the flat seal face of Wedge Gate Valves, flat gate valve, stop valve, safety valve, check-valves type, and the workpiece such as mechanical seal ring of other plane types.At even three of the cloth of mill 282 outward flange circumference lengthening piece holddown groove 283 is arranged, plane lengthening abrading block 284 as shown in Figure 8 has fitting surface 285, grinding wheel spindle 286 is connected with emery wheel 288 by bearing 287, grinding wheel spindle 286 is installed in the lengthening abrading block 284 of plane again, the end that also is plane lengthening abrading block 284 is pivoted with emery wheel 288 with grinding wheel spindle 286, plane lengthening abrading block 284 usefulness clamp nut approach screws are fixedly installed in the lengthening piece holddown groove 283, the fitting surface 285 of plane lengthening abrading block 284 is vertical with grinding wheel spindle 286, then after the fitting surface of plane lengthening abrading block 284 assembled with horizontal fitting surface 289 close fit of mill 282, grinding wheel spindle 286 was parallel to power transmission shaft 13.Can realize that emery wheel 288 can do 360 ° of rotations in planetary running, and cooperate with mill 282 and to do rotation and revolution, form netted flat surface grinding.
As Fig. 9, shown in Figure 10, be chamfering grinding in realizing, can adopt interior chamfering lengthening abrading block 290 as shown in Figure 9, the fitting surface 291 of interior chamfering lengthening abrading block 290 is with grinding wheel spindle 286 out of plumb but slope inwardly, 25 °-30 ° at inclination angle, like this, after the fitting surface 291 of interior chamfering lengthening abrading block 290 assembles with horizontal fitting surface 289 close fit of mill 282, grinding wheel spindle 286 just is not parallel to power transmission shaft 13, makes emery wheel 288 outward-dipping, can be used for the grinding of chamfering in the valve sealing face.
As Figure 11, shown in Figure 12, for realizing outer chamfering grinding, can adopt outer chamfering lengthening abrading block 292 as shown in figure 11, the fitting surface 293 of outer chamfering lengthening abrading block 292 is with grinding wheel spindle 286 out of plumb but outward-dipping, 25 °-30 ° at inclination angle, like this, after the fitting surface 293 of outer chamfering lengthening abrading block 291 assembles with horizontal fitting surface 289 close fit of mill 282, grinding wheel spindle 286 just is not parallel to power transmission shaft 13, and emery wheel 288 is sloped inwardly, and can be used for the grinding of the outer chamfering of valve sealing face.
Inclined-plane panoramic table as shown in Figure 5 is the device that is used for disposable installation grinding Wedge Gate Valves valve body upper-lower seal face.Circular attic base 300 usefulness screw rods are fixed on the workbench 100, and inclined plane disc 301 centers are bearing blocks 302, and bearing 303 is equipped with bearing block 302,304 1 equipped bearing 302 endoporus of central shaft, and the other end is connected with planar disk 305 usefulness locking nuts 306.Planar disk 305 after the installation can be rotated arbitrarily on inclined plane disc 301, and the alignment pin 307 of two disk borders is grinding angles of adjustment and definite Wedge Gate Valves.
For realizing spherical grinding, adopt taper rubbing disc, also promptly as shown in figure 13, described grinding mechanism has mill bar 281, the lower end of mill bar 281 and power transmission shaft 13 is connected with form of flanges and rigidly fixes connection and rigidly fix connection, the lower end of mill bar 281 rigidly fixes with taper sleeve type connection or flange form connection and is connected with taper rubbing disc 295, taper rubbing disc 295 peripheries are downward-sloping, the cross section that also is taper rubbing disc 295 is trapezoidal, the even lengthening piece holddown groove that is furnished with of taper rubbing disc 295 outward flange circumference, the lengthening piece is installed in the lengthening piece holddown groove, lengthening piece end is pivoted with emery wheel 296 with grinding wheel spindle, piece more than extends, lengthening piece holddown groove, emery wheel etc. are identical with the plane mill with the connected mode of mill.Like this, emery wheel 296 then can be realized the grinding to spherome surface all inwardly.Also promptly can realize the ball seal face after the repair welding of grinding ball valve, the local built-up welding.Can also be used for the sealing surface grinding maintenance of high pressure angle stop valves, gas tapering sealed valve type, and the reparation of special nonstandard valve.
And to realize grinding to spherome surface, and also needing frock clamp as shown in figure 14, described frock clamp is a spheroid grinding whirligig:
Guide rail support 1 ' is used for fixing on workbench 100, and gear-box 2 ' is installed on the guide rail support 1 ', near variable-frequency motor 16 ' one side's gear-box 2 ' equipped bearing 7 ', 8 ', power transmission shaft A3 ' and the assembling of bearing A7 ' tight fit; The exterior portion that power transmission shaft stretches out gear-box 2 ' connects with variable-frequency motor 16 ' by spline coupling 18 ', and the power transmission shaft of gear-box 2 ' the inside part is installed gear A5 '; Power transmission shaft B4 ' is assemblied on the gear-box 2 ' by bearing 7 ', 8 '.Power transmission shaft B4 ' near bearing B8 ' installs gear B6 ', and meshes with gear A 5 '.Power transmission shaft B4 ' tail end near guide rail support 1 ' is connected with anchor clamps 11 ' by external screw thread; Power transmission shaft B4 ' tail end is hollow taper hole, is used to hold out against ringfeder 12 '.Tailstock 10 ' is installed on the guide rail support 1 ', tailstock 10 ' bottom mounted tailstock nut 15 ', and guide rail support 1 ' is gone up screw mandrel 14 ' is installed; The B24 ' that shakes the hand connects with screw mandrel 14 '.
The operation principle of spheroid grinding whirligig:
Under open state, the gear A 5 ' on the power transmission shaft A3 ' passes to gear B 6 ' on the power transmission shaft B4 ' with speed, and power transmission shaft B4 ' promptly rotates.Grinding speed is by Frequency Converter Control.
The spheroid 100 ' of grinding float ball valve, at first spheroid 100 ' is placed on the workbench of guide rail support 1 ' by lifting, again spheroid 100 ' is risen and be hung on the power transmission shaft B4 ' conehead 121 ', tailstock centre 122 ' laterally moves left by screw mandrel 14 ', and ringfeder 12 ' is with spheroid 100 ' swelling.Also be that grinding mechanism 28 is aimed at sphere as the taper bistrique on the valve maintenance grinding machine of Figure 13 subsequently, mix up the coverage rate of grinding angle and bistrique and spheroid 100 ', just the operation grinding ball 100 ' of can starting shooting.
The hard seal ball body of grinding Fixed ball valve, with the ball journal of one of anchor clamps 11 ' clamping spheroid, spheroid other end ball journal holds out against with tailstock centre, mixes up bistrique and sphere, the operation grinding of can starting shooting.
The utility model keeps in repair desired lathe height with valve and is designed to two columns, transmission device is set to the variable-frequency motor infinitely variable speeds, drive socket and power transmission shaft diameter are big, and lathe also has casing, bearing load is big, and moment of torsion is strong, and rigidity is big, intensity is good, when bistrique can not occur beating and play under the state of rotation at a high speed yet.And feed arrangement is a worm gear drives turning cylinder sleeve screw thread, can carry out axial grinding, and simultaneously mill in the grinding mechanism and emery wheel can be realized revolving round the sun and the planetary netted grinding of rotation, thereby has possessed valve and keep in repair needed multiple grinding function.And the grinding mechanism in the utility model is connected with power transmission shaft by flange, can change grinding mechanism according to the needs of valve to be ground, and can guarantee the concentricity of mill bar and power transmission shaft, and it is steady to have strengthened rigidity.Because built-up welding is stainless steel or Hardmetal materials on the valve sealing face of grinding, sealing surface is uneven, intermittently greatly but interrupted grinding is many, emery wheel is easy to generate beats and fragmentation, therefore need the combination of mill and mill bar that very strong rigidity will be arranged, satisfied this needs and adopt flange that mill is connected with the mill bar.
The technical solution of the utility model is valve to be keeped in repair desired lathe height be designed to two columns, and workbench is roomy abundant; Transmission device is set to the variable-frequency motor infinitely variable speeds, and drive socket and power transmission shaft diameter are big, and bearing load is big, and moment of torsion is strong, and rigidity is big, and intensity is good; Feed arrangement is a worm gear drives turning cylinder sleeve screw thread, axially grinding; Grinding mechanism is designed to flat stone mill, conical surface mill and chamfering mill, and mill and emery wheel can be realized revolving round the sun and the planetary netted grinding of rotation, thereby has possessed valve and keep in repair needed multiple grinding function.The utility model is used the function that self has, and is equipped with the spheroid turntable grinding attachment that the utility model comprises, and can keep in repair the spheroid through repair welding, local built-up welding.In addition, the utility model is equipped with other devices, energy grinding mechanical seal ring, sealing ring, sealing gasket and other metal flat workpiece.
Claims (9)
1. valve grinding maintenance machine tool, has workbench, the workbench both sides are respectively equipped with a root post, the upper end of two root posts is connected with hoisting cross beam, and hoisting cross beam is provided with lifting motor, and lifting motor is connected with elevating screw, workbench is provided with frock clamp, it is characterized in that: be arranged with the column sleeve on two root posts respectively, connect with backboard between two column sleeves, the lower end of elevating screw is screwed in the lifting nut fixing on the backboard; Be installed with casing on the supporting arm on the backboard, the casing top is provided with driving motor, and the shaft extension of driving motor is connected with the power transmission shaft that passes casing; The power transmission shaft lower end rigidly fixes and is connected with grinding mechanism.
2. valve grinding maintenance machine tool as claimed in claim 1, it is characterized in that: the shaft extension of driving motor is connected with shaft coupling, and the shaft coupling below is connected with a female splined shaft, and the external splines cooperation of power transmission shaft upper end is embedded in described female splined shaft; Also have feed arrangement: feed arrangement includes has externally threaded drive shaft sleeve, the inwall of drive shaft sleeve is tight with at the outer ring of transmission shaft bearing, the inner ring of transmission shaft bearing and power transmission shaft close-fitting, be installed with sliding sleeve on the casing, sliding sleeve is set in outside the drive shaft sleeve, and is provided with keyway between sliding sleeve and the drive shaft sleeve and cooperates; The outer spiral shell of drive shaft sleeve is provided with feed nut, fixed cover is provided with the feeding turbine outside the first half of feed nut, the feed worm engagement that is provided with on feeding turbine and the casing, the end of feed worm is provided with handwheel, the inner ring close-fitting of a latter half of feed nut and a bearing, the outer ring of this bearing and the bearing block close-fitting that is installed on the sliding sleeve.
3. valve grinding maintenance machine tool as claimed in claim 1, it is characterized in that: described grinding mechanism has the mill bar, the mill bar rigidly fixes with the lower end of power transmission shaft and is connected, the lower end of mill bar rigidly fixes and is connected with the plane mill, the even lengthening piece holddown groove that is furnished with of mill outward flange circumference, the lengthening piece is installed in the lengthening piece holddown groove, and lengthening piece end is pivoted with emery wheel with grinding wheel spindle.
4. valve grinding maintenance machine tool as claimed in claim 3 is characterized in that: the lengthening piece has fitting surface, and the fitting surface of lengthening piece is vertical with grinding wheel spindle, the fitting surface of lengthening piece and the horizontal fitting surface close fit of mill, and grinding wheel spindle is parallel to power transmission shaft.
5. valve grinding maintenance machine tool as claimed in claim 3, it is characterized in that: the lengthening piece has fitting surface, the fitting surface and the grinding wheel spindle out of plumb of lengthening piece, the fitting surface of lengthening piece and the horizontal fitting surface close fit of mill, grinding wheel spindle is not parallel to power transmission shaft and tilts outwardly or inwardly.
6. valve grinding maintenance machine tool as claimed in claim 1, it is characterized in that: described grinding mechanism has the mill bar, the mill bar rigidly fixes with the lower end of power transmission shaft and is connected, the lower end of mill bar rigidly fixes and is connected with taper rubbing disc, the mill periphery is downward-sloping, and the cross section of mill is trapezoidal, the even lengthening piece holddown groove that is furnished with of mill mill outward flange circumference, the lengthening piece is installed in the lengthening piece holddown groove, and lengthening piece end is pivoted with emery wheel with grinding wheel spindle.
7. valve grinding maintenance machine tool as claimed in claim 1, it is characterized in that: described anchor clamps are the inclined-plane panoramic table, described inclined-plane panoramic table includes the circular attic base that is fixed on the workbench, and circular attic base top is that pivot is pivoted with upper surface plane inclined dish with the central shaft.
8. valve grinding maintenance machine tool as claimed in claim 1, it is characterized in that: described anchor clamps are spheroid grinding whirligig, described spheroid grinding whirligig has the guide rail support that is installed on the workbench, it is top also to have two taperings that are oppositely arranged, contact held out against ringfeder between two taperings were top, the top end that is arranged on by the power train of variable-frequency motor connection and driving of tapering, another tapering is top to be arranged on the tailstock, the tailstock spiral shell is located at screw mandrel, and screw mandrel is located on the guide rail support.
9. valve grinding maintenance machine tool as claimed in claim 1, it is characterized in that: power transmission shaft is provided with the shaft lock hole, position with respect to the shaft lock hole is horizontally arranged with lock shaft, the interior end of lock shaft is plugged in the shaft lock hole, the outer end of lock shaft is positioned at outside the motor cabinet and is provided with handle, lock shaft passes the endoporus of a spring, and described spring is resisted against between the protruding wall of motor cabinet inwall and lock shaft, and lock shaft is arranged on the motor cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200301180U CN202053136U (en) | 2011-01-28 | 2011-01-28 | Valve grinding and repairing machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200301180U CN202053136U (en) | 2011-01-28 | 2011-01-28 | Valve grinding and repairing machine tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202053136U true CN202053136U (en) | 2011-11-30 |
Family
ID=45013123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200301180U Expired - Fee Related CN202053136U (en) | 2011-01-28 | 2011-01-28 | Valve grinding and repairing machine tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202053136U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102423867A (en) * | 2011-12-10 | 2012-04-25 | 常州常瑞天力动力机械有限公司 | Aluminum alloy work piece grinding mechanism |
| CN102615568A (en) * | 2011-01-28 | 2012-08-01 | 自贡市瑞拓阀门维修有限公司 | Valve grinding and maintaining machine tool |
| CN102886725A (en) * | 2012-11-01 | 2013-01-23 | 机化阀门(沈阳)有限公司 | Automatic valve grinding machine |
| CN103523539A (en) * | 2012-07-05 | 2014-01-22 | 兰州理工大学 | Special buffering device for aluminum ingot continuous casting production line palletizing robot |
| CN104827377A (en) * | 2015-05-08 | 2015-08-12 | 浙江省特种设备检验研究院 | Polishing device for wall-climbing robot with wall surface polishing function |
| CN110744401A (en) * | 2019-11-02 | 2020-02-04 | 蒋立宪 | Repairing device for friction pair friction working surface for mechanical sealing device |
-
2011
- 2011-01-28 CN CN2011200301180U patent/CN202053136U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102615568A (en) * | 2011-01-28 | 2012-08-01 | 自贡市瑞拓阀门维修有限公司 | Valve grinding and maintaining machine tool |
| CN102615568B (en) * | 2011-01-28 | 2013-12-18 | 自贡市瑞拓阀门维修有限公司 | Valve grinding and maintaining machine tool |
| CN102423867A (en) * | 2011-12-10 | 2012-04-25 | 常州常瑞天力动力机械有限公司 | Aluminum alloy work piece grinding mechanism |
| CN103523539A (en) * | 2012-07-05 | 2014-01-22 | 兰州理工大学 | Special buffering device for aluminum ingot continuous casting production line palletizing robot |
| CN102886725A (en) * | 2012-11-01 | 2013-01-23 | 机化阀门(沈阳)有限公司 | Automatic valve grinding machine |
| CN102886725B (en) * | 2012-11-01 | 2014-06-25 | 机化阀门(沈阳)有限公司 | Automatic valve grinding machine |
| CN104827377A (en) * | 2015-05-08 | 2015-08-12 | 浙江省特种设备检验研究院 | Polishing device for wall-climbing robot with wall surface polishing function |
| CN110744401A (en) * | 2019-11-02 | 2020-02-04 | 蒋立宪 | Repairing device for friction pair friction working surface for mechanical sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111130 Termination date: 20140128 |