CN207415396U - A kind of vacuum fixture - Google Patents

Abstract

The utility model provides a kind of vacuum fixture, and including mounting bracket and sucker, the installation end of the sucker is fixedly connected with mounting bracket, and the adsorption plane of sucker is used for and the fitting of yoke piece adsorption；It is also equipped with clamping the clamping device of yoke piece on the mounting bracket.It can be stablized by the vacuum fixture, clamping installation easily is carried out to yoke piece, there is simple installation, safe.

Description

A kind of vacuum fixture

Technical field

The utility model is related to a kind of vacuum fixture more particularly to it is a kind of for hydraulic generator rotor yoke piece installation Vacuum fixture.

Background technology

In recent years, with the continuous increase of hydraulic generator rotor size, the size and weight of yoke piece be not accordingly yet Disconnected increase puts forward higher requirements the work of artificial closed assembly, still uses artificial closed assembly for most of installation of yoke piece at present Mode, there are many deficiencies：

1st, yoke piece closed assembly generally uses one group of two people, single-handedly carrying magnet yoke blanking sheet to the corresponding position of rotor field spider, most Whole device to hole is installed in place, and during entire closed assembly, according to rotor rim specification and field condition, each rotor rim closed assembly needs 15 to 20 operative employees is wanted to complete, the labor intensity of installer is big.

2nd, according to labor intensity in operation process, operation employee completes single rotor rim superposition under the conditions of normal construction The time of 3~4 months or so is needed, the closed assembly work period is long.

3rd, manually installed yoke piece, installation process is complicated, and the stability of installation is poor, and installer is in long-term high intensity There is very high security risk in installation process.

Utility model content

For deficiencies of the prior art, the technical problems to be solved in the utility model is：How one kind is designed It can stablize, the fixture of clamping installation is easily carried out to yoke piece, there is simple installation, safe.

In order to solve the above technical problems, the utility model employs following technical solution：

A kind of vacuum fixture, including mounting bracket and sucker, the installation end of the sucker is fixedly connected with mounting bracket, sucker Adsorption plane is used for and the fitting of yoke piece adsorption；It is also equipped with clamping the clamping device of yoke piece on the mounting bracket.

Further, the clamping device includes the first clamping limb and the second clamping limb that are distributed in mounting bracket both sides, the One clamping limb and the second clamping arm configuration are identical；First clamping limb includes telescopic rod, fixed link and supporting rod, the clamping of supporting rod For being bonded clamping yoke piece, the one end of supporting rod away from bare terminal end is equipped with the first articulated section and the second articulated section, telescopic rod at end One end is fixedly connected with mounting bracket, and the telescopic rod other end and the first articulated section of supporting rod are hinged, and fixed link one end and mounting bracket are consolidated Fixed connection, the fixed link other end and the second articulated section of supporting rod are hinged；The stretching motion of telescopic rod can drive supporting rod to press from both sides It holds the second articulated section of bar and does circular motion for the center of circle.

Further, the supporting rod bare terminal end is provided with flexible piece.

Further, the mounting bracket is mounting rod.

Further, there are two first clamping limb and the second clamping limb are respectively provided with, two the first clamping limbs and two Second clamping limb is distributed in mounting rod both sides along mounting rod length direction.

Further, there are six the sucker is set, including quantity be two the first sucker group, the second sucker group and 3rd sucker group；Two suckers of the first sucker group are distributed in mounting rod on both sides of the middle, the second sucker along mounting rod length direction Two suckers of group are distributed in one end both sides of mounting rod, and two suckers of the 3rd sucker group are distributed in another end two of mounting rod Side.

Further, the sucker is vacuum cup.

Compared with prior art, the beneficial effects of the utility model：

1st, vacuum fixture provided by the utility model, including mounting bracket and sucker, the installation end and mounting bracket of the sucker It is fixedly connected, the adsorption plane of sucker is used for and the fitting of yoke piece adsorption；It is also equipped with clamping magnetic on the mounting bracket The clamping device of yoke piece.In installation process, yoke piece can be adsorbed by sucker, since vacuum fixture is in moving process In, be inevitably present it is a degree of jolt, so clamping device is set to clamp yoke piece, so that very Empty fixture can be stablized, easily carry out clamping installation to yoke piece, have many advantages, such as simple installation, safe.

2nd, vacuum fixture provided by the utility model using vacuum cup, the operations such as draws yoke piece, is discharged, Yoke piece movement efficiency of loading is high.

3rd, the overall structure of vacuum fixture provided by the utility model, using it is simple, practicability is high.

Description of the drawings

Fig. 1 is the lateral plan of comprehensive transfer formula operating platform in one embodiment of the utility model；

Fig. 2 is the front view of comprehensive transfer formula operating platform in one embodiment of the utility model；

Fig. 3 is the front view that vacuum fixture adsorbs under yoke piece state in one embodiment of the utility model；

Fig. 4 is the top view that vacuum fixture adsorbs under yoke piece state in one embodiment of the utility model；

Fig. 5 is the lateral plan of vacuum fixture structure in one embodiment of the utility model；

Fig. 6 is top view of the operating platform along hydrogenerator side working condition in one embodiment of the utility model；

Fig. 7 is side view of the operating platform along hydrogenerator side working condition in one embodiment of the utility model.

Reference numeral：

1st, mounting rod；2nd, vacuum cup；3rd, the first clamping limb；4th, the second clamping limb；5th, telescopic rod；6th, fixed link；7th, press from both sides Hold bar；8th, the first articulated section of supporting rod；9th, the second articulated section of supporting rod；10th, yoke piece；11st, pedestal；12nd, operating platform； 13rd, scissor-type lifting mechanism；14th, column；15th, double leval jib hoisting mechanism；16th, connecting rod；17th, operating unit；18th, omni-directional wheel； 19th, support column；20th, protective fence；30th, the rotor of hydrogenerator.

Specific embodiment

The embodiment of technical solutions of the utility model is described in detail below in conjunction with attached drawing.Following embodiment is only For clearly illustrating the technical solution of the utility model, therefore example is intended only as, and cannot this reality be limited with this With new protection domain.

Embodiment：

With reference to Fig. 1~Fig. 7, a kind of comprehensive transfer formula operating platform, the operation including pedestal 11 and on pedestal Platform 12 further includes elevating mechanism and servomechanism, and the elevating mechanism is fixedly mounted between pedestal and operating platform, described to help Force mechanisms one end is fixedly mounted on the operational platform, and the other end of servomechanism is equipped with vacuum fixture, and vacuum fixture is used to press from both sides Hold yoke piece 10；It is additionally provided with to manipulate the pneumatic system that vacuum fixture clamps.

In the present embodiment, yoke piece can be clamped by vacuum fixture, vacuum fixture whether clamp by pneumatic system into Row control, can adjust yoke piece claming angle in the horizontal direction to install, elevating mechanism can be adjusted by servomechanism The vertical height of whole operating platform, is installed so as to adjust yoke piece in vertical clamping, and pedestal can change under the control of worker Become operating location.By the transfer formula operating platform, yoke piece installation period can be shortened, reduce labor intensity, have and improve Yoke piece installation effectiveness reduces the advantages that cost of labor.

Referring to Figures 1 and 2, the servomechanism includes column 14 on the operational platform is vertically fixedly mounted and be mounted on The double leval jib hoisting mechanism 15 of column top, the vacuum fixture are connected by connecting rod 16 with double leval jib hoisting mechanism one end.

Above-mentioned comprehensive transfer formula operating platform, has the following advantages：

1st, working range is wide：The servomechanism maximum working radius of column standard type can be realized on a large scale up to 3 meters Workpiece movement loads.

2nd, lift stroke is big：The servomechanism effective travel of standard type is up to 1.2 meters, it can be achieved that workpiece is promoted by minimum point To setting height(from bottom).

3rd, hoisting power is strong：The servomechanism maximum load of standard type up to 60kg (be free of fixture), it can be achieved that big work Part transfer carries and provides support for load, to meet the more degree of freedom of fixture.

4th, rotation angle is big：Column rotary joint and fixture rotary joint can realize that 360 ° rotate freely, and allow the shifting of workpiece It is dynamic there is no limit, can abatement apparatus wind worry caused by tracheae in rotary course.

5th, quadric chain：Servomechanism quadric chain in lifting process can effectively keep servomechanism forearm to begin Eventually in horizontality, to reach remaining the same from beginning to end for work status.

6th, anti-eccentric ability：Servomechanism has the bias that enough rigidity can be effective against workpiece, can complete fixture Clamping workpiece gos deep into the operation in cavity.

With reference to Fig. 3~Fig. 5, the pneumatic system include gas circuit non-return unit, gas source purification unit, source of the gas supply unit and With operating unit 17, gas circuit non-return unit, gas source purification unit and source of the gas supply unit are sequentially communicated；The gas circuit non-return unit Input terminal with source of the gas for connecting, and for the output terminal of source of the gas supply unit for being connected with the sucker of vacuum fixture, the operation is single Member is fixedly mounted on the vacuum fixture.Gas circuit non-return unit can prevent compressed gas from flowing back, and gas source purification unit can The magazine in compressed gas is purified, such as bulky grain dust, equipment safety is protected, improves the service life of equipment.

Referring to Figures 1 and 2, the base bottom is equipped with to control the omni-directional wheel 18 of pedestal moving direction.Omni-directional wheel Using the heavy-load type high-precision omni-directional wheel of 4 a diameter of 375mm, omni-directional wheel is used as load-bearing and driving wheel；Every wheel is equal By a servo driver drives；Slow down equipped with planet-gear speed reducer to omni-directional wheel, reach the work(of anticollision and emergency stop Energy；Through experiment, effective rated load 3000kg of omni-directional wheel；Ditch, climbing capacity are crossed with certain；The pedestal is cuboid Shape, omni-directional wheel are separately mounted to four corners of pedestal.The use of omni-directional wheel, can allow operating platform interior edge on construction ground Any direction moves, such as forward, backward, to the left, to the right, curve and rotate in place, operating platform can be made quickly to be moved to conjunction Suitable closed assembly position improves yoke piece installation effectiveness.

Referring to Figures 1 and 2, supporting mechanism is installed between pedestal and operating platform, supporting mechanism is scalable including four Support column 19, be vertically fixedly mounted on four corners of base top respectively, the top of support column is fixedly mounted on operating platform Bottom.When pedestal moves, operating platform inevitably jolts there are a degree of, hoisting mechanism and support construction It is used in combination, the stability of operating platform during the motion can be improved, and then improve the mounting stability of yoke piece, Security performance during installation can be improved.

In the present embodiment, the elevating mechanism is scissor-type lifting mechanism 13.Scissor-type lifting mechanism realizes jacking load Greatly, lifting travel is long and lifting rear platform stationarity is good, while controls flexible, the comprehensive action such as realization advances, retreats, translation Function；It is powered using towing cable, 380V cable connectors is provided.And automatic winding box is equipped with, it prevents cable from winding, can effectively expand shifting Carry scope.

Referring to Figures 1 and 2, the surrounding of the operating platform is provided with protective fence 20.Protective fence uses the frame of section bar welding Posture overall structure after being molded using quality steel plate, is carried out protective treatment and external coating, is generally fixedly mounted on operating platform On, the staff on operating platform is protected, improves the job safety of staff.

With reference to Fig. 3~Fig. 5, vacuum fixture includes mounting bracket and sucker, and the installation end and mounting bracket of the sucker, which are fixed, to be connected It connects, the adsorption plane of sucker is used for and the fitting of yoke piece adsorption；It is also equipped with clamping yoke piece on the mounting bracket Clamping device.In installation process, yoke piece can be adsorbed by sucker, it, can not since vacuum fixture is in moving process It jolts there are a degree of with avoiding, so clamping device is set to clamp yoke piece, so that vacuum fixture It can stablize, clamping installation easily is carried out to yoke piece, there is simple installation, safe.

In the present embodiment, the clamping device includes the first clamping limb 3 and the second clamping limb that are distributed in mounting bracket both sides 4, the first clamping limb and the second clamping arm configuration are identical；First clamping limb includes telescopic rod 5, fixed link 6 and supporting rod 7, clamping For the bare terminal end of bar for being bonded clamping yoke piece, it is hinged that the one end of supporting rod away from bare terminal end is equipped with the first articulated section 8 and second Portion 9, telescopic rod one end are fixedly connected with mounting bracket, and the telescopic rod other end and the first articulated section of supporting rod are hinged, fixed link one end It is fixedly connected with mounting bracket, the fixed link other end and the second articulated section of supporting rod are hinged；The stretching motion of telescopic rod can drive Supporting rod does circular motion using the second articulated section of supporting rod as the center of circle.General clamping device only includes two clamping pieces, right It is not sufficiently stable in the product clamping for having sliding, in order to overcome this problem, supporting rod bare terminal end is designed as with one by we The bending section of arc is determined, to improve the stability to the clamping of yoke piece.When source of the gas interrupts, clamping device can be held Yoke piece prevents that transfer process from damaging equipment or other unexpected injuries.

In the present embodiment, supporting rod bare terminal end is provided with flexible piece.Supporting rod is generally made of rigid material, supporting rod When clamping yoke piece, the risk of yoke piece is even scratched there are scratching, so installing flexible piece in supporting rod bare terminal end, is avoided Above-mentioned risk, it is also possible to prevent supporting rod and yoke piece from clamping situation about skidding.

In the present embodiment, the mounting bracket is mounting rod 1.First clamping limb and the second clamping limb are both provided with two A, two the first clamping limbs and two the second clamping limbs are distributed in mounting rod both sides along mounting rod length direction.Multiple folders are set Gripping arm is to more stably clamp yoke piece.

In the present embodiment, the sucker is the first sucker group, the second sucker group of two including quantity there are six setting With the 3rd sucker group；Two suckers of the first sucker group are distributed in mounting rod on both sides of the middle along mounting rod length direction, and second inhales Two suckers of disk group are distributed in one end both sides of mounting rod, and two suckers of the 3rd sucker group are distributed in another end of mounting rod Both sides.

In the present embodiment, the sucker is vacuum cup 2.Using vacuum cup, the behaviour such as drawn, discharged to yoke piece Make, yoke piece movement efficiency of loading is high.

In the present embodiment, camera is additionally provided on vacuum fixture, for the exactitude position installed to yoke piece.

The technology requirement of yoke piece assembling：

1st, magnet yoke blanking sheet parameter：It is about 60kg or so for 30 yoke sheet weight of large-sized water turbine generator rotor, shape Approximate cuboid, size are 2500 × 400 × 5 (units：mm).

2nd, closed assembly space：Rotor rim is located in 30 outer circumference of rotor, and yoke piece is stacked in rotor field spider yoke layer by layer Corresponding position.During closed assembly, comprehensive transfer formula operating platform is by yoke piece closed assembly in outside rotor (a diameter of 15m and more than) stent Side.According to rotor specification requirement, the closed assembly height on yoke pitch of fins ground is 0.8m~4.4m or so, therefore closed assembly equipment need to meet edge Circumference closed assembly and required by meeting in altitude range any position yoke piece closed assembly.

3rd, before closed assembly, yoke piece is placed on the annular rack being close on the outside of rotor, and during closed assembly, operator is by yoke on piece The positioning screw frock of location hole through corresponding position on rotor field spider realizes contraposition installation；The lamination one on same angle direction After fixed number amount, an angle lamination need to be turned along rotor circumference direction.After the completion of closed assembly, need to control using round frame test circumference wave degree is surveyed System is within 7mm, and cylindricity requirement control is within 0.8mm.

The process of yoke piece assembling：

1st, comprehensive transfer formula operating platform is adjusted to operating attitude, each joint locking of equipment and in standby shape State.

2nd, operating platform moves, and control vacuum fixture is moved to directly over yoke piece, and " absorption " is pressed on operating unit and is pressed Button adsorbs yoke piece；Stable holding is carried out to yoke piece by the first clamping limb and the second clamping limb simultaneously, prevents yoke piece from anticipating It drops outside.

3rd, Mobile vacuum fixture allows yoke piece to reach the installation region of hydraulic generator rotor side, by manually accurate Contraposition, after good mounting hole, control vacuum fixture puts down yoke piece to reach installation purpose.

4th, different height position installation yoke piece can be realized by adjusting the height of hoistable platform.

5th, after equipment region closed assembly is complete, equipment is playbacked to holding state, repeats subsequent work Xun Huan.

In specific implementation process, brake gear is mounted at the revolute joint of comprehensive transfer formula operating platform, it can Arbitrarily to be rotated when preventing assistant machine structure and vacuum fixture from working, so as to which the safety of equipment and personnel be effectively ensured.Scissor-type liter The range of descending mechanism is in 800mm~3000mm.Pedestal is equipped with suspension, has shock-absorbing function.At the construction field (site), Equipped with source of the gas, generally using air compressor.

After the operation of the present embodiment, it can achieve the effect that：

1st, labor intensity：Construction personnel's labor intensity substantially reduces, and exerts a force and calculates according to servomechanism, and closed assembly process needs people Work force is within 20N, i.e., servomechanism completes the labor intensity of the yoke piece closed assembly of 60kg weight and artificial single-handedly installation 2kg The intensity of heavy industry part is suitable, avoids security risk existing for long-time intensive work.

2nd, personnel amount：During closed assembly, every equipment of initial estimate one people manipulates, it is contemplated that entire closed assembly mistake The efficiency of journey, it is proposed that 4 equipment is taken to cycle closed assembly along peritrochanteric, therefore personnel are in 4 people or so needed for during closed assembly, significantly Reduce human cost.

3rd, the closed assembly cycle：Program fore vacuum formula draws fixture move loading action response quickly, and transfer efficiently, fast, can The human assistance time is substantially reduced, so as to reduce entire construction period, the initial estimate closed assembly cycle can halve.Meanwhile the program Institute's integrated equipment integration degree is higher, avoids cumbersome field adjustable and causes non-cutting time long.

4th, security：Contacting directly for personnel and yoke piece, while booster engine are avoided using servomechanism and front end fixture Structure can realize the whole agravicization balance quick condition of carrying, and for closed assembly transfer, servomechanism is for paying close attention to operator Healthy and safety, release occupational disease influence caused by heavy physical labor and play the role of very important, also improve operation Reasonability, substantially improve the operating condition of operator.

Finally illustrate, above example is merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng The utility model is described in detail according to embodiment, it will be understood by those of ordinary skill in the art that, it can be to this practicality New technical solution is modified or replaced equivalently, without departing from the objective and scope of technical solutions of the utility model, It should all cover among the scope of protection of the utility model.

Claims (7)

1. a kind of vacuum fixture, which is characterized in that including mounting bracket and sucker, the installation end and mounting bracket of the sucker, which are fixed, to be connected It connects, the adsorption plane of sucker is used for and the fitting of yoke piece adsorption；It is also equipped with clamping yoke piece on the mounting bracket Clamping device.

2. vacuum fixture according to claim 1, which is characterized in that the clamping device includes being distributed in mounting bracket both sides The first clamping limb and the second clamping limb, the first clamping limb and second clamping arm configuration it is identical；First clamping limb include telescopic rod, Fixed link and supporting rod, for being bonded clamping yoke piece, the one end of supporting rod away from bare terminal end is equipped with for the bare terminal end of supporting rod One articulated section and the second articulated section, telescopic rod one end are fixedly connected with mounting bracket, and the telescopic rod other end and supporting rod first are hinged Portion is hinged, and fixed link one end is fixedly connected with mounting bracket, and the fixed link other end and the second articulated section of supporting rod are hinged；Telescopic rod Stretching motion can drive supporting rod to do circular motion using the second articulated section of supporting rod as the center of circle.

3. vacuum fixture according to claim 2, which is characterized in that the supporting rod bare terminal end is provided with flexible piece.

4. vacuum fixture according to claim 2, which is characterized in that the mounting bracket is mounting rod.

5. vacuum fixture according to claim 4, which is characterized in that first clamping limb and the second clamping limb are respectively provided with There are two, two the first clamping limbs and two the second clamping limbs are distributed in mounting rod both sides along mounting rod length direction.

6. vacuum fixture according to claim 4, which is characterized in that there are six the sucker settings, is including quantity First sucker group, the second sucker group and the 3rd sucker group of two；Two suckers of the first sucker group are along mounting rod length direction Mounting rod on both sides of the middle is distributed in, two suckers of the second sucker group are distributed in one end both sides of mounting rod, the 3rd sucker group Two suckers are distributed in another end both sides of mounting rod.

7. vacuum fixture according to claim 1, which is characterized in that the sucker is vacuum cup.