CN110296648B - Device and method for observing contact state of sealing ring of hub bearing unit - Google Patents
Device and method for observing contact state of sealing ring of hub bearing unit Download PDFInfo
- Publication number
- CN110296648B CN110296648B CN201910506235.0A CN201910506235A CN110296648B CN 110296648 B CN110296648 B CN 110296648B CN 201910506235 A CN201910506235 A CN 201910506235A CN 110296648 B CN110296648 B CN 110296648B
- Authority
- CN
- China
- Prior art keywords
- sealing ring
- sealing
- base
- connecting sleeve
- ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 194
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000003825 pressing Methods 0.000 claims description 16
- 239000003292 glue Substances 0.000 claims description 3
- 238000003475 lamination Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/14—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention relates to a device and a method for observing the contact state of a hub bearing unit sealing ring, which mainly comprise a sealing ring, a graduated scale, a connecting sleeve, a base, a support, a positioning nut and a fixing nut, wherein the support and the connecting sleeve are sleeved on a shaft neck of the base, the positioning nut and the fixing nut are connected to the shaft neck of the base, the support is positioned between the positioning nut and the fixing nut, the support is fixedly connected with the connecting sleeve, the sealing ring is positioned at the inner side of the connecting sleeve and is in contact fit with the base, and the graduated scale is connected to a base step at the bottom of the base. The beneficial effects of the invention are as follows: the structure of the invention can intuitively observe the actual contact state of the sealing lip of the sealing ring and the contact surface; the observation method implemented by the device is simple to operate, the detection result is reliable and effective, and the device is applied to measurement of the contact state of all hub bearing sealing rings.
Description
Technical Field
The invention relates to the field of mechanical engineering and the automobile industry, in particular to a device and a method for observing the contact state of a sealing ring of a hub bearing unit.
Background
Hub bearings are one of the key components of automobiles and their primary function is to carry weight and provide accurate guidance for the rotation of the hub, which requires it to withstand not only axial loads but also radial loads. There is no feasible technical solution for observing the sealing contact state of the sealing ring of the hub bearing unit. The observation of the sealing contact state greatly contributes to the design of the following sealing structure.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides a device and a method for observing the contact state of a sealing ring of a hub bearing unit, which are simple, accurate and easy to implement.
The invention solves the technical problems by adopting the technical scheme that: the observation device for the contact state of the hub bearing unit sealing ring mainly comprises a sealing ring, a graduated scale, a connecting sleeve, a base, a support, a positioning nut and a fixing nut, wherein the support and the connecting sleeve are sleeved on a shaft neck of the base, the positioning nut and the fixing nut are connected to the shaft neck of the base, the support is positioned between the positioning nut and the fixing nut, the support is fixedly connected with the connecting sleeve, the sealing ring is positioned on the inner side of the connecting sleeve and is in contact fit with the base, and the graduated scale is connected to a base step at the bottom of the base.
The sealing ring is a sealing ring I with a sealing lip extending outwards, an R angle is arranged on the base, and the R angle is in interference fit with the sealing ring I.
The sealing ring is a sealing ring II with a sealing lip extending inwards, a cylindrical step is arranged on the base and is in clearance fit with the connecting sleeve, and the cylindrical step is in interference fit with the sealing ring II.
The sealing ring is in interference fit with the connecting sleeve.
The support is fixedly connected with the connecting sleeve through a connecting bolt.
The observation method for the contact state of the sealing ring of the hub bearing unit comprises the following steps that the observation device is used for firstly pressing the sealing ring into a connecting sleeve through a pressing sleeve and a loading mechanism, and the pressing depth of the sealing ring is measured through a height meter; then, a positioning nut is mounted on a shaft neck of a base, a bracket and a connecting sleeve are fixed through a connecting bolt, the gap between the connecting sleeve and the base is adjusted through adjusting the height of the positioning nut, and the gap is measured through a graduated scale, so that the interference of a sealing lip of a sealing ring and the sealing contact surface of the base is calculated; finally, through the cooperation of the fixed nut fixed support and the base, the interference of the sealing lip of the sealing ring and the sealing contact surface of the base is locked, and then the fitting shape and deformation degree of the sealing lip of the sealing ring and the contact matching surface are observed under the projector.
Glue is dispensed at the matching position of the framework of the sealing ring and the connecting sleeve, so that the fixing rigidity is enhanced.
The support and the connecting sleeve are guided and installed on the positioning nut of the base through the guiding cooperation of the inner hole of the connecting sleeve and the diameter of the step of the base.
The beneficial effects of the invention are as follows: the structure of the invention can intuitively observe the actual contact state of the sealing lip of the sealing ring and the contact surface; the observation method implemented by the device is simple to operate, the detection result is reliable and effective, and the device is applied to measurement of the contact state of all hub bearing sealing rings. By observing the actual change of the contact state of the sealing lip and the sealing surface of the hub bearing sealing ring under the condition of different press fitting depths, the corresponding relation between the sealing interference of the hub bearing sealing ring and the contact state of the sealing lip can be obtained, and the method has important significance in researching the deformation and the contact state of the sealing lip of the hub bearing sealing ring under the actual installation state. Meanwhile, the method can be combined with deformation and stress distribution of a theoretical CAE analysis sealing ring, and has important significance for guiding the design of the interference of the sealing ring of the hub bearing product.
Drawings
FIG. 1 is a schematic view of the observation device when the sealing ring is a sealing ring I;
FIG. 2 is a schematic view of the observation device when the seal ring is a seal ring II;
FIG. 3 is a schematic cross-sectional view of a connecting sleeve;
FIG. 4 is a schematic top view of the connection sleeve;
FIG. 5 is a schematic diagram of seal dimension measurement when the seal ring is seal ring I;
FIG. 6 is a schematic diagram of seal dimension measurement when the seal ring is seal ring II;
FIG. 7 is a schematic diagram of press fitting of the seal ring when the seal ring is seal ring I;
fig. 8 is a schematic diagram of press-fitting of the seal ring when the seal ring is seal ring ii.
Reference numerals illustrate: sealing washer I1-1, sealing washer II 1-2, scale 2, adapter sleeve 3, base 4, connecting bolt 5, support 6, locating nut 7, fixation nut 8, press sleeve 9, loading mechanism 10, cylinder step 11, base step 12.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
As shown in the figure, the observation device for the contact state of the hub bearing unit sealing ring mainly comprises a sealing ring, a graduated scale 2, a connecting sleeve 3, a base 4, a support 6, a positioning nut 7 and a fixing nut 8, wherein the support 6 and the connecting sleeve 3 are sleeved on the shaft neck of the base (4), the positioning nut 7 and the fixing nut 8 are connected on the shaft neck of the base 4, the support 6 is positioned between the positioning nut 7 and the fixing nut 8, the support 6 is fixed on the positioning nut 7, the vertical height adjustment is carried out through the positioning nut 7, and the fixing nut 8 is used for fastening. The bracket 6 is fixedly connected with the connecting sleeve 3, and the bracket 6 is fixedly connected with the connecting sleeve 3 through the connecting bolt 5. The sealing ring is positioned at the inner side of the connecting sleeve 3 and is in contact fit with the base 4, and the sealing ring is in interference fit with the connecting sleeve 3. The base step 12 at the bottom of the base 4 is connected with the graduated scale 2, the bottom of the base 4 is provided with a through hole, the through hole is matched and fixed with the graduated scale 2 through bolts and nuts, and the graduated scale 2 is used for measuring the gap between the bottom of the connecting sleeve and the base step. The support 6 is fixed with the base 4 by using the positioning nut 7 and the fixing nut 8, and the positioning nut 7 and the graduated scale 2 are used for adjusting and measuring the interference fit between the sealing lip of the sealing ring and the sealing contact surface.
A part of the outer side wall of the connecting sleeve 3 is removed, and the removal angle is alpha, so that the contact fit between the sealing lip of the sealing ring and the base 4 can be observed. A portion of the seal ring is removed by a cutter at an angle alpha to ensure that the seal lip of the seal ring is visible in contact with the base 4. The sealing ring and the connecting sleeve 3 are fixed through interference fit of the sealing ring framework and the connecting sleeve 3, and the interference is consistent with the actual assembly state. The sealing ring is matched with the connecting sleeve 3 and positioned through the pressing sleeve 9, and the loading mechanism 10 is used for loading the sealing ring on the pressing sleeve 9 to press the sealing ring into the connecting sleeve 3 so as to form matching and fixing.
When the sealing ring is a sealing ring I1-1 with a sealing lip extending outwards, an R angle is arranged on the base 4, and the R angle is in interference fit with the sealing ring I1-1.
The interference magnitude H of the sealing lip of the sealing ring and the sealing contact base is calculated in the following way: interference h=h1- (h2+h3), wherein H1 is the sealing lip elongation, H2 is the sealing ring press-fitting depth, and H3 is the gap between the connecting sleeve and the sealing contact base. The sealing lip elongation H1 is the actual value of the sealing ring, the sealing press fitting depth H2 is measured by a altimeter, and the gap H3 between the outer ring and the sealing contact base is measured by a graduated scale.
When the sealing ring is a sealing ring II 1-2 with a sealing lip extending inwards, the base 4 is provided with a cylindrical step 11, the cylindrical step 11 is in clearance fit with the connecting sleeve 3, the connecting sleeve 3 is guided to be connected with the base 4, and the cylindrical step 11 is in interference fit with the sealing ring II 1-2.
The interference magnitude H of the sealing lip of the sealing ring and the sealing contact base is calculated in the following way: interference magnitude H= (H1+H2) - (H5+H2+H2), wherein H1 is sealing lip elongation, H2 is sealing ring pressing depth, H3 is gap between a connecting sleeve and a base, H4 is step height, and H5 is sealing cavity depth. H1 and H5 are actual values of the sealing ring, H2 sealing press fitting depth is measured through a altimeter, a gap between the H3 connecting sleeve and the base is measured through a graduated scale, and H4 step height is the design height of the device.
The observation method for the contact state of the sealing ring of the hub bearing unit comprises the steps that the observation device is used for firstly pressing the sealing ring into the connecting sleeve 3 through the pressing sleeve 9 and the loading mechanism 10, and the pressing depth of the sealing ring is measured by using a height meter; then, a positioning nut 7 is mounted on a shaft neck of the base 4, then the bracket 6 and the connecting sleeve 3 are fixed through the connecting bolt 5, the positioning nut 7 mounted on the base 4 is guided and mounted through the guiding fit of the inner hole of the connecting sleeve 3 and the diameter of the base step 12, the gap between the connecting sleeve 3 and the base 4 is adjusted through adjusting the height of the positioning nut 7, and the gap is measured through the graduated scale 2, so that the interference of the sealing lip of the sealing ring and the sealing contact surface of the base 4 is calculated; finally, the support 6 is fixed by the fixing nut 8 to be matched with the base 4, the interference of the sealing lip of the sealing ring and the sealing contact surface of the base is locked, and the fitting appearance and deformation degree of the sealing lip of the sealing ring and the contact matching surface are observed under the projector.
Before the sealing ring is installed, the sealing ring of the angle alpha is cut and removed by a cutting machine on the sealing ring of the hub bearing, and the cutting direction passes through the circle center of the sealing ring. Then the alpha angle removed by the sealing ring is aligned and matched with the alpha angle of the connecting sleeve, then the connecting sleeve 3 is pressed in, if the fastening is not enough, glue is added at the matching position of the framework of the sealing ring and the connecting sleeve 3, and the fixing rigidity is enhanced.
By adjusting the interference between the sealing lip of the sealing ring and the base, the corresponding relation between the interference, the deformation degree of the sealing lip and the sealing attaching state can be obtained, and the measured data can be subjected to later research and analysis.
The invention can restore the contact state of the sealing lip and the contact surface of the hub bearing sealing ring in the actual loading state; and the actual contact deformation degree of the rubber lip of the sealing ring and the contact surface under the condition of different interference amounts of the sealing ring is obtained through observation of the integral mirror, and the actual contact deformation degree is compared with the stress deformation state of the sealing lip and the attaching state of the sealing lip and the contact surface through CAE theoretical modeling analysis, so that support is provided for the design of the sealing interference amount of the hub bearing.
The contact state of the sealing lip with the sealing surface can be directly observed. The method can flexibly adjust and measure different interference magnitudes of the sealing lip and the sealing surface, obtain corresponding relations between the different interference magnitudes and the contact state of the sealing lip, and provide support for simulating and researching the optimal lip interference magnitudes of the hub bearing sealing ring under different contact states.
In addition to the embodiments described above, other embodiments of the invention are possible. All technical schemes formed by equivalent substitution or equivalent transformation fall within the protection scope of the invention.
Claims (8)
1. The utility model provides a wheel hub bearing unit sealing washer contact state observation device, includes sealing washer, scale (2), adapter sleeve (3), base (4), support (6), positioning nut (7) and fixation nut (8), characterized by: the support (6) and the connecting sleeve (3) are sleeved on the shaft neck of the base (4), the shaft neck of the base (4) is connected with a positioning nut (7) and a fixing nut (8), the support (6) is positioned between the positioning nut (7) and the fixing nut (8), the support (6) is fixedly connected with the connecting sleeve (3), the sealing ring is positioned at the inner side of the connecting sleeve (3) and is in contact fit with the base (4), and a base step (12) at the bottom of the base (4) is connected with a graduated scale (2);
A part of the outer side wall of the connecting sleeve (3) is removed, and the removal angle is alpha, so that the contact fit between the sealing lip of the sealing ring and the base (4) can be observed; a part of the sealing ring is removed by a cutting machine, and the removal angle is alpha, so that the contact between the sealing lip of the sealing ring and the base (4) can be observed; the sealing ring and the connecting sleeve (3) are fixed through interference fit of the sealing ring framework and the connecting sleeve (3), and the interference is consistent with the actual assembly state; the sealing ring is matched with the connecting sleeve (3) and positioned through the pressing sleeve (9), and the loading mechanism (10) is used for loading the sealing ring on the pressing sleeve (9) to press the sealing ring into the connecting sleeve (3) so as to form matching and fixing.
2. The hub bearing unit seal ring contact state observation device according to claim 1, characterized in that: the sealing ring is a sealing ring I (1-1) with a sealing lip extending outwards, an R angle is arranged on the base (4), and the R angle is in interference fit with the sealing ring I (1-1).
3. The hub bearing unit seal ring contact state observation device according to claim 1, characterized in that: the sealing ring is a sealing ring II (1-2) with a sealing lip extending inwards, a cylindrical step (11) is arranged on the base (4), the cylindrical step (11) is in clearance fit with the connecting sleeve (3), and the cylindrical step (11) is in interference fit with the sealing ring II (1-2).
4. A hub-bearing unit seal ring contact state observation device according to claim 2 or 3, characterized in that: the sealing ring is in interference fit with the connecting sleeve (3).
5. The hub bearing unit seal ring contact state observation device according to claim 4, wherein: the bracket (6) is fixedly connected with the connecting sleeve (3) through a connecting bolt (5).
6. A method for observing the contact state of a sealing ring of a hub bearing unit, comprising the observation device as set forth in any one of claims 1 to 5, characterized in that: firstly, pressing a sealing ring into a connecting sleeve (3) through a pressing sleeve (9) and a loading mechanism (10), and measuring the pressing depth of the sealing ring by using a height meter; then, a positioning nut (7) is mounted on a shaft neck of the base (4), then the bracket (6) and the connecting sleeve (3) are fixed through a connecting bolt (5), the gap between the connecting sleeve (3) and the base (4) is adjusted by adjusting the height of the positioning nut (7), and the gap is measured through a graduated scale (2), so that the interference of the sealing lip of the sealing ring and the sealing contact surface of the base (4) is calculated; finally, the interference of the sealing lip of the sealing ring and the sealing contact surface of the base is locked through the cooperation of the fixing support (6) and the base (4) of the fixing nut (8), and then the lamination morphology and deformation degree of the sealing lip of the sealing ring and the contact cooperation surface are observed under the projector;
before installing the sealing ring, cutting the hub bearing sealing ring by using a cutting machine to remove the sealing ring with an alpha angle, wherein the cutting direction passes through the circle center of the sealing ring; then aligning and matching the alpha angle removed by the sealing ring with the alpha angle of the connecting sleeve, and pressing the connecting sleeve (3); when the sealing ring is a sealing ring I (1-1) with a sealing lip extending outwards, the interference magnitude H between the sealing lip of the sealing ring and the sealing contact base is calculated in the following way: interference h=h1- (h2+h3), wherein H1 is the sealing lip elongation, H2 is the sealing ring press-fitting depth, and H3 is the gap between the connecting sleeve and the sealing contact base; the sealing lip elongation H1 is the actual value of a sealing ring, the sealing press fitting depth H2 is measured by a altimeter, and the gap H3 between the outer ring and the sealing contact base is measured by a graduated scale;
When the sealing ring is a sealing ring II (1-2) with a sealing lip extending inwards, the interference magnitude H between the sealing lip of the sealing ring and the sealing contact base is calculated in the following way: interference magnitude H= (H1+H2) - (H5+H2+H2), wherein H1 is sealing lip elongation, H2 is sealing ring pressing depth, H3 is gap between a connecting sleeve and a base, H4 is step height, and H5 is sealing cavity depth; h1 and H5 are actual values of the sealing ring, H2 sealing press fitting depth is measured through a altimeter, a gap between the H3 connecting sleeve and the base is measured through a graduated scale, and H4 step height is the design height of the device.
7. The method for observing the contact state of the sealing ring of the hub bearing unit according to claim 6, wherein the method comprises the following steps: glue is dispensed at the matching position of the framework of the sealing ring and the connecting sleeve (3), so that the fixing rigidity is enhanced.
8. The method for observing the contact state of the sealing ring of the hub bearing unit according to claim 6, wherein the method comprises the following steps: the bracket (6) and the connecting sleeve (3) are guided and installed on the positioning nut (7) of the base (4) through the guiding cooperation of the inner hole of the connecting sleeve (3) and the diameter of the base step (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910506235.0A CN110296648B (en) | 2019-06-12 | 2019-06-12 | Device and method for observing contact state of sealing ring of hub bearing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910506235.0A CN110296648B (en) | 2019-06-12 | 2019-06-12 | Device and method for observing contact state of sealing ring of hub bearing unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110296648A CN110296648A (en) | 2019-10-01 |
| CN110296648B true CN110296648B (en) | 2024-07-09 |
Family
ID=68027878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910506235.0A Active CN110296648B (en) | 2019-06-12 | 2019-06-12 | Device and method for observing contact state of sealing ring of hub bearing unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110296648B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113405430B (en) * | 2021-06-16 | 2023-05-23 | 东风汽车底盘系统有限公司 | Detection tool and detection method for fit clearance between upper roller and lower roller of rim forming roller |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106969865A (en) * | 2017-02-22 | 2017-07-21 | 浙江万向精工有限公司 | A kind of sealing ring lateral lip device for pressure measurement and measuring method |
| CN210119191U (en) * | 2019-06-12 | 2020-02-28 | 浙江万向精工有限公司 | Device for observing contact state of sealing ring of hub bearing unit |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2083168A5 (en) * | 1970-04-07 | 1971-12-10 | Goetzewerke Friedrich Go | |
| JP2001004308A (en) * | 1999-06-18 | 2001-01-12 | Nsk Ltd | Method for measuring internal gap of double row conical roller bearing unit for supporting wheel |
| EP1515364B1 (en) * | 2003-09-15 | 2016-04-13 | Nuvotronics, LLC | Device package and methods for the fabrication and testing thereof |
| KR100797706B1 (en) * | 2006-05-29 | 2008-01-23 | 주식회사 일진글로벌 | Method for Measuring a Clearance of Hub Bearing for Auto Mobile |
| CN104568280B (en) * | 2013-10-21 | 2017-02-08 | 浙江万向精工有限公司 | Pre-tightening force detection device for hub bearing bolt |
| CN206959757U (en) * | 2017-08-11 | 2018-02-02 | 浙江加泰尔汽车部件制造股份有限公司 | Hub measuring device for windage |
-
2019
- 2019-06-12 CN CN201910506235.0A patent/CN110296648B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106969865A (en) * | 2017-02-22 | 2017-07-21 | 浙江万向精工有限公司 | A kind of sealing ring lateral lip device for pressure measurement and measuring method |
| CN210119191U (en) * | 2019-06-12 | 2020-02-28 | 浙江万向精工有限公司 | Device for observing contact state of sealing ring of hub bearing unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110296648A (en) | 2019-10-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110296648B (en) | Device and method for observing contact state of sealing ring of hub bearing unit | |
| CN205373931U (en) | Connecting piece | |
| CN102323058B (en) | Device and method for identifying bearing load of turbo generator set based on strain signal of rotating shaft | |
| CN106525424A (en) | Comprehensive measurement device and method for bearing rigidity and starting friction torque | |
| CN210119191U (en) | Device for observing contact state of sealing ring of hub bearing unit | |
| CN107576437B (en) | Gas turbine rotor axial load measuring device | |
| CN105180786A (en) | Elevator traction machine brake wheel hop detection tool | |
| CN215865812U (en) | Fatigue test system for hub bearing unit structure | |
| CN112721901B (en) | Locking ABS sensor mounting structure that moves | |
| CN206523107U (en) | Handle of a knife general measuring instrument | |
| CN103344431A (en) | Axial static load testing apparatus of bearing | |
| CN102914231A (en) | Form and location tolerance detecting tool for spigot of motor base | |
| CN212779850U (en) | Testing arrangement is used in aircraft blade processing | |
| CN210374923U (en) | Motor center height measuring tool | |
| CN113588263A (en) | Fatigue test system and method for hub bearing unit structure | |
| CN202101851U (en) | Bearing load recognition device for turbo generator set based on rotating shaft strain signal | |
| CN204924160U (en) | Elevator hauler braked wheel is beated and is examined utensil | |
| CN201863050U (en) | Tool setting device for omega type seal welding seam cutter of control rod drive mechanism | |
| CN219734149U (en) | Dummy shaft device of steam turbine | |
| CN108583736B (en) | Method for assembling front axle of dump truck | |
| CN111992978B (en) | Axle suspension box grade repairing method | |
| CN221325319U (en) | Tool for measuring axial displacement of speed reducer in offline simulation mode | |
| CN219495032U (en) | Tool for measuring center deviation data of turbine pair during installation and maintenance of turbine | |
| CN214120973U (en) | Bearing seal circle mistake proofing inspection device | |
| CN218211112U (en) | Stamping outer ring wall thickness difference measuring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |