CN111300330A - Tool and method for sealing and installing framework of bearing cover of straightening machine - Google Patents
Tool and method for sealing and installing framework of bearing cover of straightening machine Download PDFInfo
- Publication number
- CN111300330A CN111300330A CN202010156695.8A CN202010156695A CN111300330A CN 111300330 A CN111300330 A CN 111300330A CN 202010156695 A CN202010156695 A CN 202010156695A CN 111300330 A CN111300330 A CN 111300330A
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- gland
- bearing cap
- framework
- cover
- bearing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/0028—Tools for removing or installing seals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
- B25B27/023—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same using screws
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention discloses a sealing installation tool and a sealing installation method for a bearing cover framework of a straightening machine, wherein the tool comprises the following components: the pressing mechanism comprises a base, a support frame, a positioning guide sleeve, a pressing cover and a pressing mechanism; the positioning guide sleeve is sleeved at the seam allowance of the bearing cover to position the framework seal; the pressing mechanism is connected with the gland and is used for driving the gland to move along the direction of the perpendicular bisector of the gland; the bottom surface of the gland is provided with a bulge matched with the groove on the framework oil seal, and an object accommodating space for accommodating the bearing cover is arranged between the bottom surface of the gland and the bottom surface of the base. According to the tooling and the method for installing the framework seal of the bearing cover of the straightening machine, the pressing mechanism drives the pressing cover to move to uniformly apply force to the whole surface of the framework seal, the framework seal is pressed into the bearing cover, the stress is uniform, and the deformation is avoided. And the framework seal is installed through one-time action of the pressing mechanism, so that the method is simple and rapid, the installation efficiency is high, and the labor consumption is saved.
Description
Technical Field
The invention relates to the technical field of part assembly, in particular to a tool and a method for sealing and installing a framework of a bearing cover of a straightening machine.
Background
The assembly of the supporting rollers is a core component of the straightening machine, the assembly precision and the working state of the supporting rollers directly influence the running state of the working rollers and the overall precision of the straightening machine, one straightening machine is provided with a plurality of supporting rollers, the lubricating effect of a later supporting roller bearing is directly influenced by the installation of the framework seal of the bearing cover, if the framework seal is damaged, the pressure cannot be ensured, and a new framework seal is installed after the damaged framework seal is disassembled. In order to ensure the sealing effect, the framework seal and the bearing cover groove are generally in transition fit or interference fit, so that the mounting difficulty is high.
When the framework seal of the bearing cover of the straightening machine is installed in the prior art, an 1/6 arc sheet is found, and the framework seal is pressed into the bearing cover in a hammering mode of winding around a circle, so that the method is low in working efficiency, the framework of the framework seal is very easy to be affected by uneven hammering force, the sealing effect is affected, and the framework of the framework seal can be scrapped seriously and cannot be used.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides a tool and a method for sealing and installing a framework of a bearing cover of a straightening machine. The specific technical scheme is as follows:
in a first aspect, a tooling for sealing and installing a bearing cover framework of a straightening machine is provided, and the tooling comprises: the pressing mechanism comprises a base, a support frame, a positioning guide sleeve, a pressing cover and a pressing mechanism; the positioning guide sleeve is sleeved at the seam allowance of the bearing cover to position the framework seal; the supporting frame is arranged on the base, the pressing mechanism is arranged on the supporting frame, and the pressing mechanism is connected with the gland and used for driving the gland to move along the direction of the perpendicular bisector of the gland; the bottom surface of gland be provided with the arch of the recess looks adaptation on the skeleton oil blanket, just the bottom surface of gland with there is the thing space of receiving that is used for holding the bearing cap between the bottom surface of base.
In one possible design, a plurality of adjusting mechanisms are arranged on the base and are evenly distributed along the circumferential direction at intervals, and the adjusting mechanisms are used for adjusting the position of the bearing cover.
In one possible design, the adjustment mechanism includes: a base plate and a jackscrew; the base plate is perpendicularly connected on the base, be provided with on the base plate with the screw hole of jackscrew looks adaptation, the jackscrew passes screw hole and one end is relative with the bearing cap.
In a possible design, the adjusting mechanism further comprises a locking nut sleeved on the jackscrew and used for locking the jackscrew after the jackscrew moves to a preset position.
In one possible design, the depressing mechanism includes: the device comprises a first connecting rod, a second connecting rod, a handle, a pressure rod and a limiting sleeve; one end of the first connecting rod is hinged to the supporting frame, the other end of the first connecting rod is hinged to one end of the handle, one end of the second connecting rod is hinged to the handle, and the other end of the second connecting rod is hinged to the top end of the pressing rod; the limiting sleeve is arranged on the supporting frame and is aligned with the gland; the compression bar penetrates through the limiting sleeve, and the bottom end of the compression bar is connected with the gland.
In one possible design, the gland is provided with a viewing aperture.
In a second aspect, a straightening machine bearing cover framework seal installation method is provided, and the method comprises the following steps:
sleeving the positioning guide sleeve at the spigot of the bearing cover;
the framework is sealed on the bearing cover and positioned in the positioning guide sleeve;
pushing the bearing cover into an object accommodating space between the base and the gland, and centering the bearing cover and the gland;
the pressing mechanism acts to press the gland into the groove of the framework seal;
the pressing mechanism drives the gland to continue pressing down to press the framework seal into the bearing cap.
In one possible design, after the bearing cover is pushed into the accommodating space between the base and the gland, the jackscrew is rotated to adjust the position of the bearing cover so that the bearing cover is aligned with the gland.
In a possible design, after the bearing cap is pushed into a material accommodating space between the base and the gland, the position of the bearing cap is adjusted by visual inspection to enable the bearing cap and the gland to be centered preliminarily, then the pressing mechanism acts to press the gland into a groove of the framework seal, and then the jackscrew is rotated to finely adjust the position of the bearing cap to enable the bearing cap and the gland to be centered completely, and the pressing mechanism drives the gland to continue to press the framework seal into the bearing cap.
In a possible design, after the jackscrew is rotated to adjust the position of the bearing cap to enable the bearing cap to be centered with the gland, the locking nut is rotated to be tightly attached to the base plate, and when the framework of the bearing cap with the same specification is sealed and installed subsequently, the bearing cap is ensured to be in contact with the jackscrew, so that the bearing cap can be centered with the gland.
The technical scheme of the invention has the following main advantages:
according to the tooling and the method for installing the framework seal of the bearing cover of the straightening machine, disclosed by the invention, the framework seal is positioned in an appropriate position on the bearing cover through the auxiliary positioning of the positioning guide sleeve, so that the framework seal is ensured to be in the appropriate position before installation, and the installation damage caused by misalignment is avoided. The pressing mechanism drives the gland to move to uniformly apply force to the whole surface of the framework seal, the framework seal is pressed into the bearing cover, the stress is uniform, and the deformation is avoided. And the framework seal is installed through one-time action of the pressing mechanism, so that the method is simple and rapid, the installation efficiency is high, and the labor consumption is saved.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a front view of an aligner bearing cap skeleton seal installation tool provided in one embodiment of the present invention;
FIG. 2 is a sectional view taken along line A-A of a seal mounting fixture for a bearing cap framework of an aligner provided in an embodiment of the present invention;
fig. 3 is a schematic three-dimensional structure diagram of a tool for sealing and installing a bearing cap framework of an straightening machine according to an embodiment of the present invention.
Description of reference numerals:
1-base, 2-support frame, 3-positioning guide sleeve, 4-gland, 5-pressing mechanism, 51-handle, 52-pressure bar, 53-spacing sleeve, 6-adjusting mechanism, 61-base plate, 62-jackscrew, 63-locking nut, 7-observation hole, X-bearing cover and Y-framework seal.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The technical scheme provided by the embodiment of the invention is described in detail below with reference to the accompanying drawings.
In a first aspect, an embodiment of the present invention provides a straightening machine bearing cap framework seal installation tool, as shown in fig. 1 to 3, the tool includes: the device comprises a base 1, a support frame 2, a positioning guide sleeve 3, a gland 4 and a pressing mechanism 5; the positioning guide sleeve 3 is sleeved at the X seam allowance of the bearing cover to position the framework seal Y; the supporting frame 2 is arranged on the base 1, the pressing mechanism 5 is arranged on the supporting frame 2, and the pressing mechanism 5 is connected with the gland 4 and used for driving the gland 4 to move along the direction of the perpendicular bisector of the gland 4; the bottom surface of gland 4 is provided with the arch with the recess looks adaptation on the skeleton oil blanket, and has the thing space of receiving that is used for holding bearing cap X between the bottom surface of gland 4 and the bottom surface of base 1.
The use method of the straightener bearing cap framework sealing installation tool provided by the embodiment of the invention is explained as follows:
firstly, the positioning guide sleeve 3 is sleeved at the X seam allowance of the bearing cover to ensure the end surface to be attached. And placing the framework seal Y on the bearing cover X and in the positioning guide sleeve 3. The positioning guide sleeve 3 plays a role in positioning and guiding the framework seal Y, and the framework seal Y can be installed in place at the relative position of the framework seal Y and the bearing cover X only by arranging the framework seal Y in the positioning guide sleeve 3. Thus, the positioning guide sleeve 3, the framework seal Y and the bearing cap X are assembled. Then, the bearing cap X is pushed into the accommodating space between the base 1 and the gland 4, and the bearing cap X and the gland 4 are aligned (i.e., the central axis of the bearing cap X is collinear with the central axis of the gland 4, and the alignment is the same in the following). The pressing mechanism 5 acts to press the gland 4 into the groove of the skeleton seal Y. The pressing mechanism 5 drives the gland 4 to continuously press down to press the framework seal Y into the bearing cap X.
Therefore, the framework seal Y is positioned in an auxiliary mode through the positioning guide sleeve 3, the framework seal Y is ensured to be in a proper position on the bearing cover X before installation, and installation damage caused by misalignment is avoided. The pressing mechanism 5 drives the gland 4 to move to uniformly apply force to the whole surface of the framework seal Y, the framework seal Y is pressed into the bearing cap X, the stress is uniform, and deformation is avoided. And the installation of the framework seal Y is completed through one-time action of the pressing mechanism 5, so that the method is simple and rapid, the installation efficiency is high, and the labor consumption is saved.
Further, in the installation tool provided by the embodiment of the present invention, the base 1 is provided with a plurality of adjusting mechanisms 6 uniformly distributed at intervals along the circumferential direction, and the adjusting mechanisms are used for adjusting the position of the bearing cap X. The position of the bearing cap X is adjusted by arranging the adjusting mechanism 6, so that the bearing cap X and the gland 4 can be accurately centered.
As for the structure of the adjustment mechanism 6, an example is given below:
as shown in fig. 1, the adjusting mechanism 6 includes: a base plate 61 and a jack wire 62; the base plate 61 is vertically connected to the base 1, a threaded hole matched with the jackscrew 62 is formed in the base plate 61, and the jackscrew 62 penetrates through the threaded hole and is opposite to the bearing cover X at one end. So set up, through threaded connection between jackscrew 62 and the base, it is different that it stretches into the length of receiving the thing space when jackscrew 62 rotates, and the one end of jackscrew 62 offsets the position of adjusting bearing cap X with bearing cap X.
Further, the adjusting mechanism 6 may further include a locking nut 63 sleeved on the jack screw 62, and configured to lock the jack screw 62 after the jack screw 62 moves to the preset position. So set up, when rotating jackscrew 62 and carrying out the adjustment of position, need outwards rotate lock nut 63 earlier and make lock nut 63 and base keep certain interval, reserve out the stroke that jackscrew 62 removed, rotate jackscrew 62 and adjust bearing cap X to predetermineeing the position after, lock nut 63 rotates to the tight base of subsides, jackscrew 62 can't further inwards screw in. The jackscrew 62 is locked by the locking nut 63, the jackscrew 62 does not need to be adjusted repeatedly when the framework seal Y of the bearing cap X with the same specification is installed, and the centering of the bearing cap X and the gland 4 can be determined by only contacting the end parts of the bearing cap X and the jackscrew 62, so that the subsequent compression operation can be carried out.
In the embodiment of the present invention, the pressing mechanism 5 is used to drive the gland 4 to move downward, the pressing mechanism 5 needs to provide a larger pressure and the force application process is smoother, and based on the above requirements, an example of the pressing mechanism 5 that meets the use requirements is given as follows:
as shown in fig. 1 to 3, the depressing mechanism 5 includes: a first connecting rod, a second connecting rod, a handle 51, a pressure rod 52 and a limit sleeve 53; one end of the first connecting rod is hinged on the support frame 2, the other end of the first connecting rod is hinged with one end of the handle 51, one end of the second connecting rod is hinged on the handle 51, and the other end of the second connecting rod is hinged with the top end of the pressure rod 52; the limiting sleeve 53 is arranged on the support frame 2, and the limiting sleeve 53 is aligned with the gland 4; the pressure lever 52 passes through the limiting sleeve 53, and the bottom end is connected with the gland 4.
The pressure lever 52 is limited by the limiting sleeve 53, and the vertical movement of the pressure lever 52 is ensured. Through setting up handle 51, form lever mechanism, the staff application of force is less can accomplish the operation of pushing down, reduces the operation degree of difficulty. Further, the screw-down mechanism 5 is constructed as a crank-slider mechanism (four-bar linkage mechanism) as described above, and the movement locus of the handle 51 is determined by calculation, so that a good stress state can be ensured in the screw-down process, and the stroke and the like can meet the assembly requirements.
Optionally, the bottom ends of the gland 4 and the pressure rod 52 are detachably connected, so that the specification of the gland 4 is convenient to replace, the installation of the framework seal Y of different specifications can be adapted by adjusting the specification of the positioning guide sleeve 3, the application range is wide, and the universality is high.
Optionally, in order to facilitate viewing of the assembly process, the gland 4 is provided with a viewing aperture 7. So set up, the staff can confirm the installation condition of gland 4 below through observation hole 7, is convenient for in time learn the trouble and the maintenance of shutting down.
In a second aspect, an embodiment of the present invention provides a method for installing a framework seal of a bearing cap of a straightening machine, where the method includes:
sleeving a positioning guide sleeve 3 at a spigot X of a bearing cover;
placing the framework seal Y on the bearing cover X and in the positioning guide sleeve 3;
pushing the bearing cover X into an object accommodating space between the base 1 and the gland 4, and centering the bearing cover X and the gland 4;
the pressing mechanism 5 acts to press the gland 4 into the groove of the framework seal Y;
the pressing mechanism 5 drives the gland 4 to continuously press down to press the framework seal Y into the bearing cap X.
According to the straightening machine bearing cap framework seal installation method provided by the embodiment of the invention, the framework seal Y is subjected to auxiliary positioning through the positioning guide sleeve 3, the framework seal Y is ensured to be in a proper position on the bearing cap X before installation, and the installation damage caused by misalignment is avoided. The pressing mechanism 5 drives the gland 4 to move to uniformly apply force to the whole surface of the framework seal Y, the framework seal Y is pressed into the bearing cap X, the stress is uniform, and deformation is avoided. And the installation of the framework seal Y is completed through one-time action of the pressing mechanism 5, so that the method is simple and rapid, the installation efficiency is high, and the labor consumption is saved.
After the bearing cap X is pushed into the accommodating space between the base 1 and the gland 4, the jackscrew 62 is rotated to adjust the position of the bearing cap X, so that the bearing cap X is aligned with the gland 4. By the arrangement, the installation process of the framework seal Y can be completed by one-time pressing operation.
Or after the bearing cap X is pushed into the accommodating space between the base 1 and the gland 4, the position of the bearing cap X is adjusted by visual inspection to enable the bearing cap X and the gland 4 to be centered initially, then the pressing mechanism 5 acts to press the gland 4 into the groove of the framework seal Y, then the jackscrew 62 is rotated to finely adjust the position of the bearing cap X to enable the bearing cap X and the gland 4 to be centered completely, and then the pressing mechanism 5 drives the gland 4 to continuously press the framework seal Y into the bearing cap X. Based on the reason that the connection precision between gland 4 and the skeleton seal Y and atress are all less, the transverse force that produces when cooperating between gland 4 and the skeleton seal Y makes bearing cap X remove and revises bearing cap X's position, and jackscrew 62 only is responsible for follow-up fine setting, can reduce jackscrew 62's adjustment range, and then sets up the jackscrew 62 that the precision is higher, further improves centering effect.
No matter which centering method is adopted, after the jackscrew 62 is rotated to adjust the position of the bearing cap X so as to center the bearing cap X and the gland 4, the locking nut 63 is rotated to be tightly attached to the base plate 61, and when the framework seal Y of the bearing cap X with the same specification is subsequently installed, the bearing cap X is ensured to be in contact with the jackscrew 62 so as to center the bearing cap X and the gland 4. Therefore, the efficiency of the subsequent installation of the framework seal Y of the bearing cap X with the same specification is obviously improved.
In summary, the tool and the method for installing the framework seal of the bearing cap of the straightening machine provided by the embodiment of the invention fill up the blank of the tool for assembling the framework seal Y, and the universal cavity can adapt to the installation of all the commonly used framework seal Y by adjusting the specifications of the positioning guide sleeve 3 and the gland 4; the pressing force is uniform, so that the risk of deformation of the framework seal Y is avoided; the method is simple to operate, high in practicability, high in efficiency, low in cost and high in precision.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. In addition, "front", "rear", "left", "right", "upper" and "lower" in this document are referred to the placement states shown in the drawings.
Finally, it should be noted that: the above examples are only for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a sealed installation frock of levelling machine bearing cap skeleton which characterized in that, the frock includes: the pressing mechanism comprises a base, a support frame, a positioning guide sleeve, a pressing cover and a pressing mechanism;
the positioning guide sleeve is sleeved at the seam allowance of the bearing cover to position the framework seal;
the supporting frame is arranged on the base, the pressing mechanism is arranged on the supporting frame, and the pressing mechanism is connected with the gland and used for driving the gland to move along the direction of the perpendicular bisector of the gland;
the bottom surface of gland be provided with the arch of the recess looks adaptation on the skeleton oil blanket, just the bottom surface of gland with there is the thing space of receiving that is used for holding the bearing cap between the bottom surface of base.
2. The sealing and mounting tool for the framework of the bearing cover of the straightening machine according to claim 1, wherein a plurality of adjusting mechanisms which are uniformly distributed at intervals along the circumferential direction are arranged on the base and used for adjusting the position of the bearing cover.
3. The sealing installation tool for the framework of the bearing cover of the straightening machine according to claim 2, wherein the adjusting mechanism comprises: a base plate and a jackscrew;
the base plate is perpendicularly connected on the base, be provided with on the base plate with the screw hole of jackscrew looks adaptation, the jackscrew passes screw hole and one end is relative with the bearing cap.
4. The sealing and mounting tool for the bearing cover framework of the straightening machine according to claim 3, wherein the adjusting mechanism further comprises a locking nut sleeved on the jackscrew and used for locking the jackscrew after the jackscrew moves to a preset position.
5. The sealing installation tool for the bearing cap framework of the straightening machine according to claim 1, wherein the pressing mechanism comprises: the device comprises a first connecting rod, a second connecting rod, a handle, a pressure rod and a limiting sleeve;
one end of the first connecting rod is hinged to the supporting frame, the other end of the first connecting rod is hinged to one end of the handle, one end of the second connecting rod is hinged to the handle, and the other end of the second connecting rod is hinged to the top end of the pressing rod;
the limiting sleeve is arranged on the supporting frame and is aligned with the gland;
the compression bar penetrates through the limiting sleeve, and the bottom end of the compression bar is connected with the gland.
6. The straightener bearing cap skeleton seal installation tooling of claim 1, wherein the gland is provided with an observation hole.
7. A method for installing a framework seal of a bearing cover of a straightening machine is characterized by comprising the following steps:
sleeving the positioning guide sleeve at the spigot of the bearing cover;
the framework is sealed on the bearing cover and positioned in the positioning guide sleeve;
pushing the bearing cover into an object accommodating space between the base and the gland, and centering the bearing cover and the gland;
the pressing mechanism acts to press the gland into the groove of the framework seal;
the pressing mechanism drives the gland to continue pressing down to press the framework seal into the bearing cap.
8. The method as claimed in claim 7, wherein the bearing cap is pushed into the receiving space between the base and the pressing cover, and the top screw is rotated to adjust the position of the bearing cap so as to center the bearing cap with the pressing cover.
9. The method as claimed in claim 7, wherein the pressing mechanism drives the pressing cover to press the frame seal into the bearing cap after the bearing cap is pushed into the accommodating space between the base and the pressing cover, the position of the bearing cap is adjusted by visual observation to initially align the bearing cap with the pressing cover, the pressing mechanism then operates to press the pressing cover into the groove of the frame seal, and the jackscrew is rotated to finely adjust the position of the bearing cap to completely align the bearing cap with the pressing cover.
10. The method as claimed in claim 8 or 9, wherein the centering of the bearing cap and the gland is achieved by rotating the jackscrew to adjust the position of the bearing cap, and then rotating the lock nut until the lock nut is tightly attached to the base plate, and the centering of the bearing cap and the gland is achieved by ensuring the contact between the bearing cap and the jackscrew when the sealing of the bearing cap with the same specification is performed subsequently.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010156695.8A CN111300330A (en) | 2020-03-09 | 2020-03-09 | Tool and method for sealing and installing framework of bearing cover of straightening machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010156695.8A CN111300330A (en) | 2020-03-09 | 2020-03-09 | Tool and method for sealing and installing framework of bearing cover of straightening machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111300330A true CN111300330A (en) | 2020-06-19 |
Family
ID=71158648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010156695.8A Pending CN111300330A (en) | 2020-03-09 | 2020-03-09 | Tool and method for sealing and installing framework of bearing cover of straightening machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111300330A (en) |
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2020
- 2020-03-09 CN CN202010156695.8A patent/CN111300330A/en active Pending
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