CN204253343U - Dial indicator connecting device - Google Patents
Dial indicator connecting device Download PDFInfo
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- CN204253343U CN204253343U CN201420618678.1U CN201420618678U CN204253343U CN 204253343 U CN204253343 U CN 204253343U CN 201420618678 U CN201420618678 U CN 201420618678U CN 204253343 U CN204253343 U CN 204253343U
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- dial gauge
- adjustment mechanism
- connection set
- walking beam
- arm
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- 230000007246 mechanism Effects 0.000 claims abstract description 59
- 238000000034 method Methods 0.000 description 10
- 230000008878 coupling Effects 0.000 description 9
- 238000010168 coupling process Methods 0.000 description 9
- 238000005859 coupling reaction Methods 0.000 description 9
- 238000009434 installation Methods 0.000 description 7
- 230000001105 regulatory effect Effects 0.000 description 4
- 206010044565 Tremor Diseases 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036544 posture Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model provides a percentage table connecting device, include: the fixed part is connected on waiting to detect the part, and percentage table connecting device still includes: the height adjusting mechanism is connected to the fixing part and extends along the radial direction of the part to be detected; the length adjusting mechanism is adjustably connected to the height adjusting mechanism in a direction parallel to the radial direction of the part to be detected, the length adjusting mechanism comprises a cross arm and a movable walking beam which are mutually nested, the cross arm is connected with the height adjusting mechanism, and the movable walking beam is adjustably arranged in a direction parallel to the axial direction of the part to be detected; the dial indicator mounting mechanism comprises a first mounting part and a second mounting part, the first mounting part is used for mounting a first dial indicator, the second mounting part is used for mounting a second dial indicator, the first mounting part is vertically connected with the second mounting part, and the first mounting part is connected with the movable walking beam. The technical scheme of the utility model the problem of among the prior art percentage table be used for excessively leading to the damage because of dropping or when fixed has been solved effectively.
Description
Technical field
The utility model relates to concentricity detection technique field, in particular to a kind of dial gauge connection set.
Background technique
Centrifugal pump, in oil extraction process, is one of visual plant of Liquid transfer.Its principle is that centrifugal pump does High Rotation Speed under the driving of motor, and impeller produces centrifugal force while High Rotation Speed in pump case, the mechanical energy of equipment is converted to the static energy of liquid, liquid is transported to destination continuously.
Note in defeated station at crude oil, because purposes is different, the kind of centrifugal pump choice for use is also many.There are single-stage pump and multistage pump, have dividing of single entry pump and double suction pump etc.In order to ensure the efficiently and smoothly operated of motor and centrifugal pump, regularly maintaining to be carried out to centrifugal pump and motor.To carry out during detection adjusts to the concentricity of centrifugal pump and motor after maintaining, guarantee that the axis of two equipment and radial clearance are in allowed band.The vibration reducing pump can be reached like this, reduce the object of the rate of fault of equipment.
In prior art, the detecting method of conventional pump concentricity is centimeter check method.Because the gauge size of pump is different, the size length of coupling is also different.The supporting magnet stand of pump is in use testing process, and the equipment that particularly two coupling gap ratios are larger, when frame table handling because the arm of force is long, easily occurs that dial framework loosens, comes off, and dial gauge such as to drop at the phenomenon.
In addition, data axial, radial during measurement easily change because detecting contact positioning, cause the concentricity adjustment degree of accuracy of pump not high.Execute-in-place work, in order to ensure the accurate of survey data, often adjusts the fixing bolt of indicator bracket, especially easily causes the damage of indicator bracket, there is certain potential safety hazard by larger strength.
Model utility content
The utility model aims to provide a kind of dial gauge connection set, with solve dial gauge in prior art because of drop or fixing time for excessively causing the problem damaged.
To achieve these goals, the utility model provides a kind of dial gauge connection set, comprising: fixing part, and be connected on parts to be detected, dial gauge connection set also comprises: height adjustment mechanism, is connected on fixing part and along the radial direction of parts to be detected and extends; Length adjustment mechanism, along be parallel to parts to be detected radial direction direction on adjustable ground be connected on height adjustment mechanism, length adjustment mechanism comprises mutually nested cross-arm and movable walking beam, cross-arm is connected with height adjustment mechanism, movable walking beam along be parallel to parts to be detected axis direction on adjustable ground arrange; Dial gauge mounting mechanism, comprise the first assembly department for installing the first dial gauge and the second assembly department for installing the second dial gauge, the first assembly department is connected with the second assembly department is vertical, and the first assembly department is connected with movable walking beam.
Further, fixing part comprises the first clip, the second clip and the first fastener assembly for connecting the first clip and the second clip.
Further, height adjustment mechanism comprises scale bar and the second fastener assembly, and scale bar has chute, and the second fastener assembly is located in cross-arm and chute to regulate the position of length adjustment mechanism on height adjustment mechanism.
Further, the first fastener assembly comprise the first bolt and with the first bolted first nut, the second fastener assembly comprise the second bolt and with the second bolted second nut.
Further, the first nut and the second nut are wing nut.
Further, cross-arm is provided with track, and movable walking beam is slidably disposed in track, and length adjustment mechanism also comprises and being arranged on cross-arm and the bounding means coordinated with movable walking beam.
Further, a sidewall of cross-arm is provided with escape groove, and one end towards dial gauge mounting mechanism of escape groove is provided with stop member, and movable walking beam is provided with and is contained in escape groove and limited that coordinates with stop member.
Further, stop member is removably connected on cross-arm.
Further, the first assembly department comprises the first mounting rail and the 3rd bolt, and the first mounting rail has the first mounting hole wearing the first dial gauge, and the 3rd bolt is supported on the first dial gauge.
Further, the second assembly department comprises the second mounting rail and the 4th bolt, and the second mounting rail has the second mounting hole wearing the second dial gauge, and the 4th bolt is supported on the second dial gauge.
Application the technical solution of the utility model, the dial gauge of dial gauge mounting mechanism for installing and measuring, is specially the first dial gauge and the second dial gauge.This dial gauge mounting mechanism is connected with the movable walking beam of length adjustment mechanism, by the position of adjustment activity walking beam on cross-arm and then can regulate the first dial gauge and the position of the second dial gauge on the direction (i.e. substantially horizontal in figure) of axis being parallel to parts to be detected like this.Above-mentioned length adjustment mechanism along be parallel to parts to be detected radial direction direction on adjustable ground be connected on height adjustment mechanism.Like this, by regulating the position of length adjustment mechanism on height adjustment mechanism and then regulating the position in the short transverse (i.e. vertical direction in figure) of the first dial gauge and the second dial gauge.Such first dial gauge and the second dial gauge can move in the horizontal direction and also can move by the vertical direction, and then can be suitable for pump and the coupling of different size, can meet the adjustment work of on-the-spot pump concentricity.Meanwhile, dial gauge is fixed by dial gauge mounting mechanism, and the adjustment of substantially horizontal is realized by mutually nested cross-arm and movable walking beam, no longer there is the problem that the arm of force is longer, thus the potential safety hazard that will dial gauge be eliminated to a certain extent easily drop.The technical solution of the utility model can reduce the error problem caused because dial framework establishes shakiness in measuring phase in data effectively simultaneously.In addition, dial gauge connection set of the present utility model is simple to operate, greatly can improve the working efficiency of operator.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 shows the structural representation of the embodiment according to dial gauge connection set of the present utility model;
Fig. 2 shows the structural representation of the first bolt of the dial gauge connection set of Fig. 1; And
Fig. 3 shows the first bolt and the first nut screw connection schematic diagram of the dial gauge connection set of Fig. 1.
Above-mentioned accompanying drawing comprises the following drawings mark:
1, the first dial gauge; 2, the second dial gauge; 10, fixing part; 11, the first clip; 12, the second clip; 13, the first fastener assembly; 131, the first bolt; 132, the first nut; 20, height adjustment mechanism; 21, scale bar; 211, chute; 22, the second fastener assembly; 30, length adjustment mechanism; 31, cross-arm; 311, stop member; 32, movable walking beam; 321, limited; 33, bounding means; 41, the first assembly department; 411, the first mounting rail; 412, the 3rd bolt; 42, the second assembly department; 421, the second mounting rail; 422, the 4th bolt.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
It is noted that following detailed description is all exemplary, be intended to provide further instruction to the application.Unless otherwise, all technology used herein and scientific terminology have the identical meanings usually understood with the application person of an ordinary skill in the technical field.
It should be noted that used term is only to describe embodiment here, and be not intended to the illustrative embodiments of restricted root according to the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative is also intended to comprise plural form, in addition, it is to be further understood that, when use belongs to " comprising " and/or " comprising " in this manual, it indicates existing characteristics, step, operation, device, assembly and/or their combination.
It should be noted that, term " first ", " second " etc. in the specification of the application and claims and above-mentioned accompanying drawing are for distinguishing similar object, and need not be used for describing specific order or precedence.Should be appreciated that the data used like this can be exchanged in the appropriate case, so as the embodiment example of the application described herein if with except here diagram or describe those except order implement.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, such as, contain those steps or unit that the process of series of steps or unit, method, system, product or equipment is not necessarily limited to clearly list, but can comprise clearly do not list or for intrinsic other step of these processes, method, product or equipment or unit.
For convenience of description, here can usage space relative terms, as " ... on ", " in ... top ", " at ... upper surface ", " above " etc., be used for the spatial relation described as a device shown in the figure or feature and other devices or feature.Should be understood that, space relative terms is intended to comprise the different azimuth in use or operation except the described in the drawings orientation of device.Such as, " in other devices or structure below " or " under other devices or structure " will be positioned as after if the device in accompanying drawing is squeezed, being then described as the device of " above other devices or structure " or " on other devices or structure ".Thus, exemplary term " in ... top " can comprise " in ... top " and " in ... below " two kinds of orientation.This device also can other different modes position rotating 90 degree or be in other orientation, and relatively describe space used here and make respective explanations.
As shown in Figure 1, the dial gauge connection set of the present embodiment comprises: fixing part 10, height adjustment mechanism 20, length adjustment mechanism 30 and dial gauge connection set.In above-mentioned parts, fixing part 10 is connected on parts to be detected, and parts to be detected can be pump shaft or coupling.Height adjustment mechanism 20 is connected on fixing part 10 and along the radial direction of parts to be detected and extends.Length adjustment mechanism 30 along be parallel to parts to be detected radial direction direction on adjustable ground be connected on height adjustment mechanism 20, length adjustment mechanism 30 comprises mutually nested cross-arm 31 and movable walking beam 32, cross-arm 31 is connected with height adjustment mechanism 20, movable walking beam 32 along be parallel to parts to be detected axis direction on adjustable ground arrange.Dial gauge mounting mechanism comprises the first assembly department 41 for installing the first dial gauge 1 and the second assembly department 42, first assembly department 41 for installing the second dial gauge 2 is connected with the second assembly department 42 is vertical, and the first assembly department 41 is connected with movable walking beam 32.
The technological scheme of application the present embodiment, the dial gauge of dial gauge mounting mechanism for installing and measuring, is specially the first dial gauge 1 and the second dial gauge 2.This dial gauge mounting mechanism is connected with the movable walking beam 32 of length adjustment mechanism 30, by the position of adjustment activity walking beam 32 on cross-arm 31 and then can regulate the first dial gauge 1 and the position of the second dial gauge 2 on the direction (i.e. substantially horizontal in figure) of axis being parallel to parts to be detected like this.Above-mentioned length adjustment mechanism 30 along be parallel to parts to be detected radial direction direction on adjustable ground be connected on height adjustment mechanism 20.Like this, by regulating the position of length adjustment mechanism 30 on height adjustment mechanism 20 and then regulating the position in the short transverse (i.e. vertical direction in figure) of the first dial gauge 1 and the second dial gauge 2.Such first dial gauge 1 and the second dial gauge 2 can move in the horizontal direction and also can move by the vertical direction, and then can be suitable for pump and the coupling of different size, can meet the adjustment work of on-the-spot pump concentricity.Simultaneously, dial gauge is fixed by dial gauge mounting mechanism, and the adjustment of substantially horizontal is realized by mutually nested cross-arm 31 and movable walking beam 32, no longer there is the problem that the arm of force is longer, thus the potential safety hazard that will dial gauge be eliminated to a certain extent easily drop.The technological scheme of the present embodiment can reduce the error problem caused because dial framework establishes shakiness in measuring phase in data simultaneously effectively.In addition, the dial gauge connection set of the present embodiment is simple to operate, greatly can improve the working efficiency of operator.
The dial gauge connection set of the present embodiment is adapted to install the instrument that dial gauge comes adjustment pump center, certainly, also can be adapted to the center centering of all kinds of pump.
As shown in Figure 1, in the present embodiment, fixing part 10 comprises the first clip 11, second clip 12 and the first fastener assembly 13 for connecting the first clip 11 and the second clip 12.First clip 11 and the second clip 12 semicircular arc, and then the first clip 11 and the second clip 12 can be looped around the outer circumferential of pump shaft or coupling.First clip 11 and the second clip 12 can link together and make them be fixed on pump shaft or coupling by the first fastener assembly 13.Fixation portions 10 structure is simple, and easy processing, cost is lower.
Certainly, in other figs. in unshowned mode of execution, fixing part 10 also can be magnetic part.The structure of fixing part 10 is not limited to above-mentioned mode, as long as can realize the connection with parts to be detected (pump shaft or coupling).
As shown in Figure 1 to Figure 3, in the present embodiment, the first fastener assembly 13 the first nut 132 of comprising the first bolt 131 and being connected with the first bolt 131.First bolt 131 comprises bolt head and screw rod, the first nut 132 and the screw-thread fit on screw rod.Above-mentioned first bolt 131 and the first nut 132 structure simply, easily realize, and simple to operate.
In the present embodiment, as shown in figures 1 and 3, the first nut 132 is wing nut.Wing nut can realize fixed installation fast when not using any instrument.Easy to operate like this, can the installation efficiency of operator effectively.
As shown in Figure 1, in the present embodiment, height adjustment mechanism 20 comprises scale bar 21 and the second fastener assembly 22, and scale bar 21 has chute 211, and the second fastener assembly 22 is located in cross-arm 31 and chute 211 to regulate the position of length adjustment mechanism 30 on height adjustment mechanism 20.Above-mentioned regulative mode is simple to operate, can the installation efficiency of operator effectively.
With the structural similarity of the first fastener assembly 13, as shown in Figure 1, in the present embodiment, the second fastener assembly 22 comprise the second bolt and with the second bolted second nut.
In the present embodiment, conveniently operate, the second nut is wing nut.Wing nut can realize fixed installation fast when not using any instrument.Easy to operate like this, can the installation efficiency of operator effectively.
As shown in Figure 1, in the present embodiment, cross-arm 31 is provided with track, and movable walking beam 32 is slidably disposed in track, and length adjustment mechanism 30 also comprises and being arranged on cross-arm 31 and the bounding means 33 coordinated with movable walking beam 32.Movable walking beam 32 can be free to slide in the track of cross-arm 31, and bounding means 33 can carry out spacing to movable walking beam 32, makes movable walking beam 32 be in certain specific position.Bounding means 33 can be stop screw, and stop screw is directly supported on movable walking beam 32 to realize the spacing of movable walking beam 32.Bounding means 33 is arranged on the end face of cross-arm 31.
As shown in Figure 1, in the present embodiment, a sidewall of cross-arm 31 is provided with escape groove, and escape groove is arranged on the sidewall of cross-arm 31 in the present embodiment.One end towards dial gauge mounting mechanism of escape groove is provided with stop member 311, and movable walking beam 32 is provided with and is contained in escape groove and limited 321 that coordinates with stop member 311.Stop member 311 and limited 321 cooperatively interact and movable walking beam 32 can not be deviate from from track.
As shown in Figure 1, in the present embodiment, stop member 311 is removably connected on cross-arm 31.Said structure is convenient to the dismounting of movable walking beam 32.
As shown in Figure 1, in the present embodiment, the first assembly department 41 comprises the first mounting rail 411 and the 3rd bolt 412, first mounting rail 411 has the first mounting hole wearing the first dial gauge 1, and the 3rd bolt 412 is supported on the first dial gauge 1.First mounting rail 411 is provided with the tapped hole coordinated with the 3rd bolt 412.Above-mentioned mounting type is simple to operate, can the installation efficiency of operator effectively.
As shown in Figure 1, in the present embodiment, the second assembly department 42 comprises the second mounting rail 421 and the 4th bolt 422, second mounting rail 421 has the second mounting hole wearing the second dial gauge 2, and the 4th bolt 422 is supported on the second dial gauge 2.Above-mentioned mounting type is simple to operate, can the installation efficiency of operator effectively.
The application above embodiments enables following technique effect:
The dial gauge connection set of the application can reach notes to oil field the object that the detection of pump concentricity is commonly used at defeated station.Quick mounting on the pump shaft and coupling of different size, is not easy in measurement, occur positioning and cause the error in data, reduces the number of times that operator repeats to proofread, improves the accuracy of survey data, reduce the labor intensity of personnel to greatest extent.
Adopt the dial gauge connection set of technical solutions of the utility model design, be exemplified below:
Compared with background technique, by using dial gauge connection set, the adjustment work of on-the-spot pump concentricity can be met.This dial gauge connection set working specification, convenient, safety, reduce the operation easier of installing erection dial gauge.The work needing complete for 10 minutes by a skilled operation movements and postures of actors table in the past, only needs up till now just can complete for 5 minutes, drastically increases working efficiency.Simultaneously, the dial gauge connection set of the application decreases the error caused because dial framework establishes shakiness in measuring phase in data, eliminate potential safety hazard to a certain extent, significantly decrease operative employee and carry out duplicate measurements check and correction number of times in order to survey data is accurate, have received good Social benefit and economic benefit, on the centering of center, there is good promotional value for all kinds of pump.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. a dial gauge connection set, comprising:
Fixing part (10), is connected on parts to be detected,
It is characterized in that, described dial gauge connection set also comprises:
Height adjustment mechanism (20), is connected to the upper and radial direction along described parts to be detected of described fixing part (10) and extends;
Length adjustment mechanism (30), along be parallel to described parts to be detected radial direction direction on adjustable ground be connected on described height adjustment mechanism (20), described length adjustment mechanism comprises mutually nested cross-arm (31) and movable walking beam (32), described cross-arm (31) is connected with described height adjustment mechanism (20), described movable walking beam (32) along be parallel to described parts to be detected axis direction on adjustable ground arrange;
Dial gauge mounting mechanism, comprise the first assembly department (41) for installing the first dial gauge (1) and the second assembly department (42) for installing the second dial gauge (2), described first assembly department (41) is connected with described second assembly department (42) is vertical, and described first assembly department (41) is connected with described movable walking beam (32).
2. dial gauge connection set according to claim 1, it is characterized in that, described fixing part (10) comprises the first clip (11), the second clip (12) and the first fastener assembly for connecting described first clip (11) and described second clip (12).
3. dial gauge connection set according to claim 2, it is characterized in that, described height adjustment mechanism (20) comprises scale bar (21) and the second fastener assembly (22), described scale bar (21) has chute (211), and described second fastener assembly (22) is located in described cross-arm (31) and described chute (211) to regulate the position of described length adjustment mechanism (30) on described height adjustment mechanism (20).
4. dial gauge connection set according to claim 3, it is characterized in that, the first nut (132) that described first fastener assembly (13) comprises the first bolt (131) and is connected with described first bolt (131), described second fastener assembly (22) comprise the second bolt and with described second bolted second nut.
5. dial gauge connection set according to claim 4, is characterized in that, described first nut (132) and described second nut are wing nut.
6. dial gauge connection set according to claim 1, it is characterized in that, described cross-arm (31) is provided with track, described movable walking beam (32) is slidably disposed in described track, and described length adjustment mechanism (30) also comprises and is arranged on the upper and bounding means (33) coordinated with described movable walking beam (32) of described cross-arm (31).
7. dial gauge connection set according to claim 6, it is characterized in that, a sidewall of described cross-arm (31) is provided with escape groove, one end towards described dial gauge mounting mechanism of described escape groove is provided with stop member (311), and described movable walking beam (32) is provided with and is contained in described escape groove and limited (321) coordinating with described stop member (311).
8. dial gauge connection set according to claim 7, is characterized in that, described stop member (311) is removably connected on described cross-arm (31).
9. dial gauge connection set according to claim 1, it is characterized in that, described first assembly department (41) comprises the first mounting rail (411) and the 3rd bolt (412), described first mounting rail (411) has the first mounting hole wearing described first dial gauge (1), and described 3rd bolt (412) is supported on described first dial gauge (1).
10. the dial gauge connection set according to claim 1 or 9, it is characterized in that, described second assembly department (42) comprises the second mounting rail (421) and the 4th bolt (422), described second mounting rail (421) has the second mounting hole wearing described second dial gauge (2), and described 4th bolt (422) is supported on described second dial gauge (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420618678.1U CN204253343U (en) | 2014-10-23 | 2014-10-23 | Dial indicator connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420618678.1U CN204253343U (en) | 2014-10-23 | 2014-10-23 | Dial indicator connecting device |
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| Publication Number | Publication Date |
|---|---|
| CN204253343U true CN204253343U (en) | 2015-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420618678.1U Expired - Fee Related CN204253343U (en) | 2014-10-23 | 2014-10-23 | Dial indicator connecting device |
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| Country | Link |
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| CN (1) | CN204253343U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105215762A (en) * | 2015-11-05 | 2016-01-06 | 江苏万达特种轴承有限公司 | The alignment device of large-size pivoting support lasso and aligning method thereof |
| CN108489670A (en) * | 2018-05-19 | 2018-09-04 | 王东林 | Machine is debugged in centrifugal impeller static balance automatically |
-
2014
- 2014-10-23 CN CN201420618678.1U patent/CN204253343U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105215762A (en) * | 2015-11-05 | 2016-01-06 | 江苏万达特种轴承有限公司 | The alignment device of large-size pivoting support lasso and aligning method thereof |
| CN108489670A (en) * | 2018-05-19 | 2018-09-04 | 王东林 | Machine is debugged in centrifugal impeller static balance automatically |
| CN108489670B (en) * | 2018-05-19 | 2024-02-27 | 王东林 | Automatic static balance adjuster for centrifugal impeller |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150408 |