CN109210092B - Assembly method of mandrel with groove on peripheral surface and bearing seat assembly with flexible seal - Google Patents
Assembly method of mandrel with groove on peripheral surface and bearing seat assembly with flexible seal Download PDFInfo
- Publication number
- CN109210092B CN109210092B CN201811194321.4A CN201811194321A CN109210092B CN 109210092 B CN109210092 B CN 109210092B CN 201811194321 A CN201811194321 A CN 201811194321A CN 109210092 B CN109210092 B CN 109210092B
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- mandrel
- bearing seat
- spacer
- seat assembly
- groove
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000002093 peripheral effect Effects 0.000 title claims abstract description 14
- 125000006850 spacer group Chemical group 0.000 claims abstract description 87
- 230000008014 freezing Effects 0.000 claims abstract description 17
- 238000007710 freezing Methods 0.000 claims abstract description 17
- 238000009749 continuous casting Methods 0.000 claims description 13
- 238000002955 isolation Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 8
- 230000007704 transition Effects 0.000 claims description 5
- 238000003754 machining Methods 0.000 claims description 4
- 230000000873 masking effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- CTSLUCNDVMMDHG-UHFFFAOYSA-N 5-bromo-3-(butan-2-yl)-6-methylpyrimidine-2,4(1H,3H)-dione Chemical compound CCC(C)N1C(=O)NC(C)=C(Br)C1=O CTSLUCNDVMMDHG-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910001105 martensitic stainless steel Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/08—Rigid support of bearing units; Housings, e.g. caps, covers for spindles
- F16C35/12—Rigid support of bearing units; Housings, e.g. caps, covers for spindles with ball or roller bearings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/14—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding-Contact Bearings (AREA)
- Rolls And Other Rotary Bodies (AREA)
Abstract
The invention relates to a method for assembling a mandrel with a groove on the periphery and a bearing seat assembly with a flexible seal, which comprises the following steps: freezing a mandrel with a groove on the peripheral surface to reduce the outer diameter of the mandrel; after the spacer bush is sleeved on the mandrel, one end of the spacer bush abuts against the axial end face of the mandrel, and the other end of the spacer bush at least shields the bearing seat assembly from passing through the groove on the mandrel; and sleeving the bearing seat assembly on the spacer sleeve, so that the bearing seat assembly slides along the spacer sleeve, and moving the bearing seat assembly to the position on the mandrel, where the bearing seat assembly is installed, after the bearing seat assembly is separated from the spacer sleeve. The invention can prevent the bearing seat assembly from being clamped on the mandrel during assembly.
Description
Technical Field
The invention relates to a mandrel with a groove on the peripheral surface and a method for assembling a bearing seat assembly with a flexible seal.
Background
The continuous casting roller assembly used in the steel mill at present is a novel spiral freezing large interference type structure. The length of the group continuous casting roll assembly is about 2 meters generally, so the continuous casting roll assembly mainly comprises a plurality of roll sleeves, a plurality of bearing seat assemblies with sealing elements, a plurality of sections of mandrels and a plurality of spacers. The installation process of the continuous casting roll assembly comprises the following steps: one end of a first mandrel is arranged in a first roller sleeve in an interference fit mode, a first isolation part is arranged in the first roller sleeve, one end of a second mandrel is arranged in the first roller sleeve in an interference fit mode, a first bearing seat assembly is arranged on the second mandrel in an interference fit mode, and therefore the roller sleeves are connected in series to form a set of continuous casting roller assemblies through the multi-section mandrels.
In order to freeze the continuous casting roller assembly, spiral grooves and tool withdrawal grooves are formed in the circumferential surfaces of the two ends of the mandrel, and an axial first hole and a radial second hole are formed in the mandrel. A closed freezing channel is formed in the whole continuous casting roller assembly through a mandrel and a middle spacer sleeve, so that the freezing effect of the roller during operation is ensured. The matching part of the roller sleeve and the mandrel is in multi-interference fit, and the interference magnitude is more than 0.3; bearing frame subassembly also adopts interference fit with the dabber, consequently, because the big excessive cooperation between the part, there is following high degree of difficulty to the assembly technique:
1. before the roller sleeve is assembled, the roller sleeve needs to be heated to expand, however, the martensitic stainless steel is welded on the surface of the roller sleeve, if the heating temperature is too high, the structure of a welding layer is easy to change, and the quality of a product is not facilitated. Therefore, the heating of the roller sleeve is limited, and the clearance between the roller sleeve and the mandrel after heating is not changed greatly relative to the clearance between the roller sleeve and the mandrel at normal temperature, so that the time for mounting the roller sleeve and the mandrel is not too long, otherwise, the phenomenon that the clearance is reduced and the assembly cannot be carried out or even the locking phenomenon is easily caused after the roller sleeve is cooled, and the grouped scrapping is caused.
2. The clearance between the first mandrel and the first bearing seat assembly is too small, when the first bearing seat assembly 5 is installed on the first mandrel 1, because the first mandrel is provided with the spiral groove 1a and the relief groove 1b, while the first bearing seat assembly 5 is composed of the bearing seat 5a, the bearing 5b, the sealing element and the stack ring 5d, the basic sealing element is the lip-type sealing element 5c with the spring, during the process of sleeving the first bearing seat assembly 5 on the first mandrel 1, the lip-type sealing element 5c is pushed into the spiral groove and/or the relief groove under the action of the spring, so that the lip-type sealing element 5c is clamped in the spiral groove and/or the relief groove, because the clearance between the first bearing seat assembly 5 and the first mandrel 1 is very small (even if the clearance between the first mandrel and the first bearing seat assembly 5 after freezing is in the range of 1 mm), once the lip-type sealing element 5c is clamped in the spiral groove 1a and/or the relief groove 1b, the first bearing housing assembly 5 cannot be withdrawn from the first mandrel 1, nor can the first bearing housing assembly 5 be pushed onto the shaft body of the first mandrel 1, thereby resulting in assembly failure and part scrap.
Disclosure of Invention
The invention aims to provide a mandrel with a groove on the periphery and a method for assembling a bearing seat assembly with a flexible seal.
The technical scheme for solving the technical problems is as follows:
the assembly method of the mandrel with the groove on the peripheral surface and the bearing seat component with the flexible seal comprises the following steps:
freezing a mandrel with a groove on the peripheral surface to reduce the outer diameter of the mandrel;
after the spacer bush is sleeved on the mandrel, one end of the spacer bush abuts against the axial end face of the mandrel, and the other end of the spacer bush at least shields the bearing seat assembly from passing through the groove on the mandrel;
and sleeving the bearing seat assembly on the spacer sleeve, so that the bearing seat assembly slides along the spacer sleeve, and moving the bearing seat assembly to the position on the mandrel, where the bearing seat assembly is installed, after the bearing seat assembly is separated from the spacer sleeve.
The invention also aims to provide a spacer bush for assembling the mandrel with the groove and the bearing seat assembly and a preparation method of the spacer bush, and the spacer bush can prevent the bearing seat assembly from being stuck on the mandrel during assembly.
The spacer bush is characterized in that one end of the spacer bush abuts against the axial end face of the mandrel, and the other end of the spacer bush at least shields the bearing seat assembly sleeve from the groove on the mandrel; this spacer includes:
a guide section for guiding the bearing block assembly;
at least one part of the abutting part is combined with the inner wall surface of the guide section;
and the shielding section is arranged at one end of the guide section and used for shielding the groove on the mandrel, and the wall thickness of the shielding section is less than 0.8 mm.
A method of making a spacer comprising and the steps of:
step 2, finishing an inner hole on the bar;
and 4, finely machining the outer circle of the bar, forming a guide section for guiding the bearing seat assembly at one end of the bar, forming a groove shielding section at least for sleeving the bearing seat assembly on the mandrel at the other end of the bar, and finally forming the spacer bush.
It is a further object of the present invention to provide a method of assembling a continuous casting roll assembly which prevents the bearing housing assembly from jamming on the mandrel during assembly.
A method of assembling a continuous casting roll assembly comprising the steps of:
step 2, heating the first roller sleeve to enlarge the aperture of the first roller sleeve, and then installing one end of the first roller sleeve at the other end of the first mandrel;
step 6, sleeving the first bearing seat assembly on the spacer sleeve, enabling the first bearing seat assembly to slide along the spacer sleeve, and moving the first bearing seat assembly to a position on the second mandrel, where the first bearing seat assembly is installed, after the first bearing seat assembly is separated from the spacer sleeve;
finally, after the mounting block is detached from the first mandrel, the last bearing block assembly is mounted at one end of the first mandrel.
The invention has the advantages that: the technology combining heating and freezing is adopted, the matching size is enlarged by properly heating the roller sleeve, the core shaft is frozen, the outer diameter size of the core shaft is reduced, and the matching gap between the core shaft and the roller sleeve is ensured. Through the spacer bush, install it in the dabber excircle, eliminated the flexible seal spare in the bearing frame subassembly soft on the contrary and elasticity, when direct and dabber helicla flute contact, produce the turn-ups easily, consequently, the axle sleeve makes the bearing frame subassembly can pass through the slot part on the dabber global smoothly, avoids the bearing frame subassembly card to die at the dabber, prevents that whole group's roller assembly from scrapping. Meanwhile, the problem that the head of the mandrel cannot guide in the installation process of the bearing seat assembly is solved through the spacer bush.
Drawings
FIG. 1 is a schematic view of a first mandrel of the prior art;
FIG. 2 is a schematic view of a prior art assembly of a first spindle with a first housing assembly;
FIG. 3 is a schematic view of the first spindle of the present invention assembled with the first housing assembly;
FIG. 4 is a cross-sectional view of a spacer according to the present invention;
FIG. 5 is a perspective view of a spacer according to the present invention;
FIG. 6 is a schematic view of the assembly of a continuous casting roll assembly using the assembly method of the present invention;
FIG. 7 is a schematic view of a continuous casting roll assembly assembled using the assembly method of the present invention;
reference numerals in figures 1 to 7: 1 is first dabber, 1a is the helicla flute, 1b is the tool withdrawal groove, 2 is the mount pad piece, 3 is first roller shell, 4 is the spacer, 4a1 is the toper portion, 4a2 is the transition portion, 4b is for supporting the top, 4c is the shielding section, 5 is first bearing frame subassembly, 5a is the bearing frame, 5b is the bearing, 5c is the lip type sealing member, 5d is the stack ring, 6 is first isolation parts, 7 is the second dabber, 8 is the second isolation parts, 9 is the second roller shell, 10 is the third dabber, 11 is the second bearing frame subassembly.
Detailed Description
As shown in fig. 1 to 3, in the present embodiment, the mandrel with a groove on the peripheral surface includes the first mandrel 1, the groove on the peripheral surface of the first mandrel 1 is a spiral groove 1a and a relief groove 1b, the seal in the first bearing housing assembly 5 is a lip seal 5c with a spring, and it should be noted that the mandrel is not limited to only the first mandrel 1, and similarly, the first bearing housing assembly 5 does not belong to only the first bearing housing assembly 5, and the first mandrel 1 and the first bearing housing assembly 5 are used only for example because the mandrel can be connected by a plurality of roller sleeves. The assembly method comprises the following steps:
as shown in fig. 1 and 3, the first mandrel 1 having the groove on the peripheral surface is frozen to reduce the outer diameter of the first mandrel 1, and the first bearing seat assembly 5 assembled with the first mandrel 1 is in interference fit, so that the frozen first mandrel 1 is convenient to sleeve the first bearing seat assembly 5 on the first mandrel 1 after the outer diameter is reduced.
As shown in fig. 3, after the spacer 4 is sleeved on the first mandrel, one end of the spacer 4 abuts against the axial end surface of the first mandrel 1, and the other end of the spacer 4 at least shields the first bearing seat assembly 5 from passing through the groove on the first mandrel 1, that is, shields the spiral groove 1a and the tool withdrawal groove 1b on the first mandrel 1, and through the shielding effect of the spacer 4, the lip-shaped sealing element in the first bearing seat assembly 5 is prevented from being bounced into the spiral groove 1a or the tool withdrawal groove 1b under the action of the spring.
As shown in fig. 3, the first bearing housing assembly 5 is fitted over the spacer 4, the first bearing housing assembly 5 is slid along the spacer 4, and the first bearing housing assembly 5 is separated from the spacer 4 and then moved to a position on the first spindle 1 where the first bearing housing assembly is mounted.
As shown in fig. 4 and 5, the spacer 4 according to the present invention is structured such that the spacer 4 includes: the first mandrel assembly comprises a guide section for guiding the first bearing seat assembly 5, a butting part 4b at least one part of which is combined with the inner wall surface of the guide section, and a shielding section 4c which is arranged at one end of the guide section and is used for shielding the groove on the first mandrel 1, wherein the clearance between the frozen first mandrel 1 and the first bearing seat assembly 5 is very small, usually the clearance is within 1mm, and therefore the wall thickness of the shielding section 4c is less than 0.8 mm. The wall thickness of the shielding section 4c is preferably 0.4-0.5 mm, in this embodiment, the wall thickness of the shielding section 4c is 0.45 mm. The length of the masking segment 4c is 135 mm.
As shown in fig. 4 and 5, the guide section includes a tapered portion 4a1 and a transition portion 4a2, the transition portion 4a2 having an outer diameter equal to the outer diameter of the masking section. Because the tapered portion 4a1 has a small outer diameter at one end, it is easy to fit the first bearing housing assembly 5 over the tapered portion 4a1, and as the outer diameter of the tapered portion 4a1 increases gradually toward the other end, the tapered portion 4a1 gradually guides the first bearing housing assembly 5 to the transition portion 4a 2.
An annular table is formed in the inner hole of the spacer 4 by machining, and the annular step is the abutting part 4 b. When assembling first dabber 1 with first bearing seat subassembly 5, avoid spacer 4 to remove under the frictional force with first bearing seat subassembly 5, support the back through supporting top 4b and first dabber 1, first dabber 1 has formed limiting displacement to spacer 4 to the spacer 4 has been avoided removing.
As shown in fig. 4 and 5, the shielding section 4c is provided with an opening 4d extending from the peripheral surface of the shielding section 4c to the axial end of the shielding section 4c far away from the guiding section, the width of the opening 4d is at least 0.15mm, and in this embodiment, the width of the opening 4d is preferably 0.2 mm. The spacer 4 is more easily inserted over the first mandrel 1 through the opening 4 d. When the first mandrel 1 and the first bearing seat assembly 5 are assembled, the first bearing seat assembly 5 slides along the spacer 4, so that the spacer 4 is easily extruded, at this time, the spacer 4 is radially contracted through the opening 4d, the first bearing seat assembly 5 is more easily slid, and the first bearing seat assembly 5 is more easily dismounted after the first bearing seat assembly 5 is assembled.
For the spacer 4, the shielding section 4c has a specific wall thickness of 0.45mm, which is very small, and the spacer 4 cannot be obtained by conventional processing methods, therefore, the present invention provides a method for preparing the spacer 4, which comprises the following steps:
step 2, finishing an inner hole on the bar;
and 3, matching the shaft clearance in the inner hole of the bar stock, and controlling the clearance between the shaft and the bar stock within 0.03 mm.
And 4, finely machining the outer circle of the bar, forming a guide section for guiding the first bearing seat assembly at one end of the bar, forming a groove shielding section 4c at least passing the first bearing seat assembly through the first mandrel at the other end of the bar, wherein the wall thickness of the shielding section 4c is less than 0.8mm, the specific wall thickness of the shielding section 4c is 0.45mm in the embodiment, and finally forming the spacer bush.
The main difficulties overcome by the additive mode are as follows: the problems of thin wall of the spacer sleeve and deep depth of the inner hole are difficult to ensure roughness and easy deformation.
In addition, according to the above method, the present invention also provides a method of assembling a continuous casting roll assembly, as shown in fig. 6 and 7, comprising the steps of:
Step 2, heating the first roller sleeve 3 to enlarge the aperture of the first roller sleeve 3, and then installing one end of the first roller sleeve 3 at the other end of the first mandrel 1; the first sleeve 3 is heated to 300 to 350 c (30 c at room temperature), the first sleeve 3 is preferably heated to 320 c, and the first sleeve 3 is expanded in diameter by only 0.45mm (to allow for expansion of the first sleeve 3 in the diameter of the bore
A free roll as an example). The assembly gap between the first roller shell 3 and the first mandrel 1 is ensured to be 0.26 mm-0.31 mm.
step 6, sleeving the first bearing seat assembly 5 on the spacer 4, enabling the first bearing seat assembly 5 to slide along the spacer 4, separating the first bearing seat assembly 5 from the spacer 4, moving to a position on the second mandrel 7 where the first bearing seat assembly 5 is installed, and detaching the spacer 4;
the second spacer 8, the second roller shell 9, the third mandrel 10, and the second shoe assembly 11 are assembled by the above steps 3 to 6.
Finally, after the mounting block 2 is removed from the first mandrel 1, a final bearing block assembly (not shown) is mounted on one end of the first mandrel 1.
Claims (7)
1. The method for assembling the mandrel with the groove on the peripheral surface and the bearing seat component with the flexible seal is characterized by comprising the following steps:
freezing a mandrel with a groove on the peripheral surface to reduce the outer diameter of the mandrel;
after the spacer bush is sleeved on the mandrel, one end of the spacer bush abuts against the axial end face of the mandrel, and the other end of the spacer bush at least shields the bearing seat assembly from passing through the groove on the mandrel;
sleeving the bearing seat assembly on the spacer sleeve, enabling the bearing seat assembly to slide along the spacer sleeve, and moving the bearing seat assembly to the position, on the mandrel, where the bearing seat assembly is installed after the bearing seat assembly is separated from the spacer sleeve;
the spacer includes:
a guide section for guiding the bearing block assembly;
at least one part of the abutting part is combined with the inner wall surface of the guide section;
the shielding section is arranged at one end of the guide section and used for shielding the groove on the mandrel, and the wall thickness of the shielding section is less than 0.8 mm;
the shielding section is provided with an opening which extends from the peripheral surface of the shielding section to the axial end of the shielding section far away from the guide section.
2. The spacer bush is characterized in that one end of the spacer bush abuts against the axial end face of the mandrel, and the other end of the spacer bush at least shields the bearing seat assembly sleeve from the groove on the mandrel; this spacer includes:
a guide section for guiding the bearing block assembly;
at least one part of the abutting part is combined with the inner wall surface of the guide section;
the shielding section is arranged at one end of the guide section and used for shielding the groove on the mandrel, and the wall thickness of the shielding section is less than 0.8 mm;
the shielding section is provided with an opening which extends from the peripheral surface of the shielding section to the axial end of the shielding section far away from the guide section.
3. The spacer sleeve of claim 2 wherein the pilot segment includes a tapered portion and a transition portion having an outer diameter equal to an outer diameter of the shield segment.
4. The spacer sleeve of claim 2 wherein the width of the opening is at least 0.15 mm.
5. The spacer sleeve of claim 2 wherein said masking segment has a wall thickness of 0.4 to 0.5 mm.
6. A method of making the spacer of any of claims 2 to 5, comprising the steps of:
step 1, processing a bar stock, forming an inner hole with a butting part on the bar stock, and roughly processing an outer circle and an inner hole of the bar stock;
step 2, finishing an inner hole on the bar;
step 3, fitting the shaft clearance in an inner hole of the bar;
and 4, finely machining the outer circle of the bar, forming a guide section for guiding the bearing seat assembly at one end of the bar, forming a shielding section for shielding the bearing seat assembly at least through a groove on the mandrel at the other end of the bar, and finally forming the spacer bush.
7. Method for assembling a continuous casting roll assembly using a spacer according to one of claims 2 to 5, characterized in that it comprises the following steps:
step 1, freezing a first mandrel with a groove to reduce the outer diameter of the first mandrel, and then mounting one end of the first mandrel on a mounting block to enable the first mandrel to be in a vertical state;
step 2, heating the first roller sleeve to enlarge the aperture of the first roller sleeve, and then installing one end of the first roller sleeve at the other end of the first mandrel;
step 3, placing the first isolation part in the inner hole of the first roller sleeve, and enabling one end of the first isolation part to abut against the other end of the first mandrel;
step 4, freezing a second mandrel with a groove to reduce the outer diameter of the second mandrel, inserting one end of the second mandrel into the inner hole of the first roller sleeve, and enabling one end of the second mandrel to abut against the other end of the first isolation part;
step 5, after the spacer bush is sleeved at the other end of the second mandrel, one end of the spacer bush is abutted against the axial end face of the other end of the second mandrel, and the other end of the spacer bush at least shields the first bearing seat assembly from passing through the groove on the mandrel;
step 6, sleeving the first bearing seat assembly on the spacer sleeve, enabling the first bearing seat assembly to slide along the spacer sleeve, and moving the first bearing seat assembly to a position on the second mandrel, where the first bearing seat assembly is installed, after the first bearing seat assembly is separated from the spacer sleeve;
finally, after the mounting block is detached from the first mandrel, the last bearing block assembly is mounted at one end of the first mandrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811194321.4A CN109210092B (en) | 2018-10-15 | 2018-10-15 | Assembly method of mandrel with groove on peripheral surface and bearing seat assembly with flexible seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811194321.4A CN109210092B (en) | 2018-10-15 | 2018-10-15 | Assembly method of mandrel with groove on peripheral surface and bearing seat assembly with flexible seal |
Publications (2)
| Publication Number | Publication Date |
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| CN109210092A CN109210092A (en) | 2019-01-15 |
| CN109210092B true CN109210092B (en) | 2020-04-10 |
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| CN201811194321.4A Active CN109210092B (en) | 2018-10-15 | 2018-10-15 | Assembly method of mandrel with groove on peripheral surface and bearing seat assembly with flexible seal |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425717A (en) * | 2011-11-08 | 2012-04-25 | 中国神华能源股份有限公司 | Bearing self-lubricator, bearing assembly and shaft device |
| CN203441991U (en) * | 2013-08-23 | 2014-02-19 | 江苏圣奥化学科技有限公司 | Rotating assembly and stirrer provided with same |
| CN205437085U (en) * | 2015-12-30 | 2016-08-10 | 邯郸市亨达机电设备有限公司 | Dabber formula drive roller |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU586371B2 (en) * | 1985-01-25 | 1989-07-06 | Vme Americas Inc. | Pivot joint bearing retention |
| CN201231422Y (en) * | 2008-06-20 | 2009-05-06 | 陈阿金 | Bearing seat for positioning the numerical-controlled lathe ball screw |
| CN105195763B (en) * | 2011-12-27 | 2019-03-15 | 日本精工株式会社 | Spindle device |
| CN104209726A (en) * | 2014-08-01 | 2014-12-17 | 博耐尔汽车电气系统有限公司 | Bearing installation fixture |
| CN205043109U (en) * | 2015-09-14 | 2016-02-24 | 内蒙古宇亚科技股份有限公司 | Novel self -adaptation continuous casting roll |
-
2018
- 2018-10-15 CN CN201811194321.4A patent/CN109210092B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425717A (en) * | 2011-11-08 | 2012-04-25 | 中国神华能源股份有限公司 | Bearing self-lubricator, bearing assembly and shaft device |
| CN203441991U (en) * | 2013-08-23 | 2014-02-19 | 江苏圣奥化学科技有限公司 | Rotating assembly and stirrer provided with same |
| CN205437085U (en) * | 2015-12-30 | 2016-08-10 | 邯郸市亨达机电设备有限公司 | Dabber formula drive roller |
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| CN109210092A (en) | 2019-01-15 |
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