CN111185864A - Tool assembly for large-scale vertical mill grinding roller bearing and bearing replacement method - Google Patents
Tool assembly for large-scale vertical mill grinding roller bearing and bearing replacement method Download PDFInfo
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- CN111185864A CN111185864A CN202010015110.0A CN202010015110A CN111185864A CN 111185864 A CN111185864 A CN 111185864A CN 202010015110 A CN202010015110 A CN 202010015110A CN 111185864 A CN111185864 A CN 111185864A
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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
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
- B25B11/02—Assembly jigs
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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
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- Mechanical Engineering (AREA)
- Support Of The Bearing (AREA)
Abstract
The invention relates to the field of bearing installation, in particular to a tool assembly for a large vertical mill grinding roller bearing, which comprises a bearing outer ring limiting tool, a guide tool seat and an anti-collision tool, wherein the anti-collision tool comprises an installation seat, an adjusting through hole is horizontally arranged in the installation seat and is vertically provided with a guide through hole, the adjusting through hole is communicated with the guide through hole, a telescopic adjusting component is movably arranged in the adjusting through hole in a penetrating manner, a guide rod is arranged in the guide through hole, and the upper part of the guide rod extends into the adjusting through hole and is fixedly connected with the telescopic adjusting component; compared with the prior art, the bearing replacing method can improve the replacing efficiency and reliability of the grinding roller bearing, changes the replacing process route of the traditional grinding roller bearing by means of a tool system, greatly saves the assembling working hours, enhances the protection of the bearing, and reduces the maintenance failure rate of the bearing; the tool assembly can be conveniently disassembled after the parts are assembled in place, and the anti-collision tool and the guide tool seat are matched to further have a guide effect in the assembling process of the grinding roll shaft.
Description
Technical Field
The invention relates to the field of bearing installation, in particular to a tool assembly for a large-scale vertical mill grinding roller bearing and a bearing replacement method.
Background
The traditional replacement and installation process method for the large-scale vertical mill grinding roller bearing does not use a special tool, only depends on the cooperation between manpower and a crane to install, and the large-scale shaft (the whole weight of the shaft is more than 20 tons, and the diameter of the shaft end surface is 600mm) is very difficult to align with a shaft distance sleeve and a self-aligning roller bearing, and is very long in use. At present, when a large-scale grinding roller bearing is replaced and installed, the following modes are installed for a distance ring between two bearing inner rings: firstly, hoisting a bearing distance ring by a crane, and enabling the bearing distance ring to freely fall into a space between two bearings from an upper bearing; and secondly, limiting the bearing distance ring on the grinding roller shaft and slowly falling between the two bearings along with the grinding roller shaft. The first mode can cause not little impact to below aligning roller bearing when bearing distance ring is freely (about 200Kg of weight) falls into the grinding roller cavity to because follow-up grinding roller axle installation can not one step of target in place, in the promotion and the whereabouts in-process that the axle is repeated, can constantly take up the distance cover back whereabouts and strike aligning bearing, every contact of axle outer terminal surface and bearing is once, just once strikes the bearing formation, and the damage risk to the bearing is high. The second mode has the advantages of high installation efficiency and small damage probability to the bearing, but the O-shaped ring or gluing method is adopted to restrain and limit the bearing distance ring, but the restraining force of the two methods on the bearing distance ring is easy to fail. After the distance ring is assembled in place, the O-shaped ring cannot be taken out, the glue cannot be removed, and the bearing lubricating oil is easily polluted in the using process.
Disclosure of Invention
In order to solve the technical problems, the scheme provided by the invention solves the problems that how to reliably limit the shaft distance ring on the grinding roller shaft when the bearing is replaced, so that the free falling body is prevented from impacting the bearing, the bearing is better protected, the mounting reliability is improved, the centering time is shortened, the mounting efficiency is improved and the like.
The technical scheme adopted by the invention is as follows: the utility model provides a frock assembly for large-scale grinding roller bearing immediately, the key lies in: including spacing frock of bearing inner race, direction frock seat and anticollision frock, the anticollision frock includes the mount pad, the level and horizontal switch is equipped with adjusting hole and the vertical direction through-hole of having seted up in the mount pad, adjusting hole with the direction through-hole intercommunication, flexible adjusting part wears to be equipped with in the adjusting hole activity, be equipped with the guide bar in the direction through-hole, the upper portion of guide bar stretches into in the adjusting hole with flexible adjusting part fixed connection. The effect of above scheme is when changing large-scale grinding roller bearing, with the coaxial fixed mounting of anticollision frock in grinding roller axle bottom, at this moment, flexible adjusting part stretches out guiding hole and connects bearing distance ring fender, the grinding roller axle gets into grinding roller roll body cavity in-process gradually, the guide bar can make the grinding roller axle whereabouts not take place the skew, when bearing distance ring descend to with the position of the several millimeters of self-aligning roller bearing distance in the grinding roller roll body cavity, flexible adjusting part withdrawal guiding hole, make the contact of several millimeters after of free whereabouts of bearing distance ring with self-aligning roller bearing, avoid the impact to self-aligning roller bearing.
Preferably, the vertical section of the mounting seat is of a T-shaped structure, the adjusting through hole is formed in the transverse portion of the mounting seat, and the guiding through hole is formed in the vertical portion of the mounting seat. The effect of this scheme is direction location stability when improving the roll axle whereabouts.
Preferably, the telescopic adjusting assembly comprises an adjusting rod and an adjusting cam which are opposite to each other, the inner ends of the two adjusting rods are respectively abutted against the adjusting cam, the outer ends of the two adjusting rods penetrate through two orifices of the adjusting through hole respectively, the adjusting rod is connected with the adjusting through hole through an elastic piece, and the adjusting cam is fixedly connected with the guide rod. The effect of this scheme is through adjusting cam and elastic component cooperation use can drive the telescopic motion of regulation pole in adjusting the through-hole.
Preferably, the elastic part is a return spring, the return spring is sleeved on the adjusting rod, a limiting ring is fixedly sleeved on one section of the adjusting rod, which is positioned in the adjusting through hole, and the two ends of the return spring are respectively fixedly connected with the hole wall of the adjusting through hole and the limiting ring. The effect of this scheme is that the inner of messenger's regulation pole supports tightly with adjusting the cam all the time.
Preferably, the adjusting cam is a disc-shaped wheel, a concave surface is arranged on the outer ring surface of the disc-shaped wheel in a right-to-right mode, the inner end of the adjusting rod is abutted against the outer ring surface of the disc-shaped wheel, the upper end of the guide rod is fixedly arranged on the axis of the disc-shaped wheel in a penetrating mode, and the lower end of the guide rod penetrates through the guide through hole and is fixedly sleeved with a nut. The effect of this scheme is rotation guide bar that can be convenient to the drive adjusts the cam and rotates, can make the regulation pole support tightly with concave surface and anchor ring respectively, thereby the drive adjusts the pole and at the telescopic motion of direction through-hole.
Preferably, the opening of the adjusting through hole is detachably provided with a positioning plate, the positioning plate is provided with a positioning hole, the positioning hole and the adjusting through hole are coaxially arranged, and the diameter of the positioning hole is the same as the outer diameter of the adjusting rod. The effect of this scheme is can make when adjusting the pole and in adjusting the through-hole concertina movement, both keep flexible stability and improve the support stability to bearing distance ring again.
Preferably, the mounting seat is provided with a plurality of screw holes. The effect of this scheme is can be through bolt and grinding roller axle fixed connection.
Preferably, the adjusting seat and the guide seat are integrally formed and are made of steel. The effect of this scheme is the mechanical strength who improves the frock.
The bearing replacing method for the grinding roller bearing of the large vertical mill is characterized by comprising the following steps of: s1, placing a grinding roller body on a grinding roller support, assembling a bearing outer ring limiting tool and a guiding tool seat, and then installing the bearing outer ring limiting tool and the guiding tool seat below a cavity of the grinding roller body to keep a positioning guide hole of the guiding tool seat coaxial with the cavity of the grinding roller body;
s2, fixedly connecting the anti-collision tool with the bottom of the grinding roller shaft through a bolt, sleeving a shaft spacing ring on the grinding roller shaft through the anti-collision tool, rotating the guide rod, driving the adjusting cam to rotate so as to eject an adjusting rod in the adjusting through hole, and blocking and limiting the bearing spacing ring at the outer end of the adjusting rod;
s3, in the process that a grinding roller shaft is hoisted by a crane and gradually arranged in a cavity of a grinding roller body, the vertical part of the mounting seat can penetrate through a positioning guide hole in the guide tool seat, so that the grinding roller shaft does not deviate when falling, through a visible hole of the guide tool seat, the situation that when a bearing distance ring falls to a position which is a few millimeters away from an aligning roller bearing in the cavity of the grinding roller body, the guide rod is rotated to drive the adjusting cam to rotate to the concave surface, so that the adjusting rod is retracted into the adjusting through hole, the bearing distance ring freely falls to a few millimeters and then contacts with the aligning roller bearing is observed, and the impact on the aligning roller bearing is avoided;
s4, the grinding roller shaft continuously falls down, and the anti-collision tool and the guide tool seat are detached when the grinding roller shaft can be observed to pass through two thirds of the height of the self-aligning roller bearing through the visual hole of the guide tool seat;
and S5, after the grinding roller shaft is completely installed in the self-aligning roller bearing, removing the bearing outer ring limiting tool to complete the replacement of the large-scale vertical grinding roller bearing.
Compared with the prior art, the tool assembly for the large-scale vertical mill grinding roller bearing and the bearing replacing method can improve the replacing efficiency and reliability of the grinding roller bearing, change the replacing process route of the traditional grinding roller bearing by means of the tool system, have a guiding function when the anti-collision tool is matched with the guiding tool seat in the assembling process of the grinding roller shaft, can be basically assembled in place at one time, and greatly save the assembling working time; anticollision frock adopts "telescopic link" machinery to stretch out, the mode of withdrawal, can be reliable with the constraint of axle distance ring epaxial fall into the grinding roller cavity together with the axle again, and can "stretch out and draw back" to restrict the location under the condition that part assembly has the deviation, the centering process that relapses of axle and axle distance ring has been eliminated, the installation has been made simple and convenient, the installation change cycle has been shortened, can eliminate the striking that produces the bearing in the distance ring installation completely, the distance ring has been eliminated and the multiple impact of aligning roller bearing has been strengthened the protection to the bearing, the maintenance fault rate of bearing has been reduced. This frock assembly is steel structure, can be convenient demolish after the part assembly is taken one's place.
Drawings
FIG. 1 is a first schematic view illustrating a usage state of the present invention;
FIG. 2 is a second schematic view illustrating a usage state of the present invention;
FIG. 3 is a third schematic view of the present invention in use;
FIG. 4 is a fourth schematic view illustrating a usage state of the present invention;
FIG. 5 is a fifth schematic view illustrating a usage state of the present invention;
fig. 6 is a schematic structural view of an anti-collision tool h according to the present invention;
fig. 7 is a top view of fig. 6.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-7, a tool assembly for a large-scale vertical mill grinding roller bearing comprises a bearing outer ring limiting tool a, a guiding tool seat b and an anti-collision tool h, wherein a positioning guide hole b1 is formed in the center of the guiding tool seat b, a visible hole b2 is formed around the positioning guide hole b1, the anti-collision tool comprises a mounting seat 1, the mounting seat 1 is made of steel, an adjusting through hole 5 and a vertically-arranged guiding through hole 4 are horizontally arranged in the mounting seat 1, the adjusting through hole 5 is communicated with the guiding through hole 4, a plurality of screw holes 11 are formed in the mounting seat 1, a positioning plate 7 is detachably mounted at the orifice of the adjusting through hole 5, a positioning hole 71 is formed in the positioning plate 7, the positioning hole 71 and the adjusting through hole 5 are coaxially arranged, two adjusting rods 31 and two adjusting cams 34 are oppositely arranged in the adjusting through hole 5, the adjusting cam 34 is a disc-shaped wheel, a concave surface is arranged on the outer ring surface of the disc-shaped wheel, the inner ends of the two adjusting rods 31 are respectively abutted against the outer ring surface of the adjusting cam 34, the outer diameter of each adjusting rod 31 is the same as the aperture of the corresponding positioning hole 71, the outer end of each adjusting rod 31 can movably penetrate through the corresponding adjusting through hole 5 and the corresponding positioning hole 71, a return spring is sleeved on each adjusting rod 31, a limiting ring 33 is fixedly sleeved on one section of each adjusting rod 31 located in the corresponding adjusting through hole 5, the two ends of each return spring are respectively fixedly connected with the hole wall of the corresponding adjusting through hole 5 and the corresponding limiting ring 33, a guide rod 6 is arranged in each guide through hole 4, the upper end of each guide rod 6 extends into the corresponding guide through hole 4 and is fixedly arranged on the axis of the disc-shaped wheel, and a nut is.
As shown in fig. 1 to 5, the invention also discloses a bearing replacement method by using the tool assembly for the grinding roller bearing of the large vertical mill, and specifically, the method comprises the following steps:
s1, as shown in figure 1, a grinding roller body c is placed on a grinding roller support d, and a bearing outer ring limiting tool a and a guiding tool seat b are assembled and then installed below a cavity of the grinding roller body c to keep a positioning guide hole b1 of the guiding tool seat b coaxial with the cavity of the grinding roller body c;
s2, fixedly connecting the anti-collision tool h with the bottom of a grinding roller shaft e through a bolt, then sleeving a bearing distance ring f on the grinding roller shaft e through the anti-collision tool h, rotating a guide rod 6 to drive an adjusting cam 34 to rotate so as to eject an adjusting rod 31 in an adjusting through hole 5, and blocking and limiting the bearing distance ring by the outer end of the adjusting rod 31;
s3, as shown in the figures 2-3, in the process that a crane hoists a grinding roller shaft e to be gradually installed in a cavity of a grinding roller body c, the vertical part of the installation seat 1 penetrates through a positioning guide hole b1 on a guide tool seat b, so that the grinding roller shaft e does not deviate when falling, through a visible hole b2 of the guide tool seat b, when a bearing distance ring falls to a position which is a few millimeters away from a self-aligning roller bearing g in the cavity of the grinding roller body c, the guide rod 6 is rotated to drive the adjusting cam 34 to rotate to a concave surface, so that the adjusting rod 31 is retracted into the adjusting through hole 5, the bearing distance ring f freely falls a few millimeters and then contacts with the self-aligning roller bearing g, and the impact on the self-aligning roller bearing g is avoided;
s4, as shown in the figure 4, the grinding roller shaft e continuously falls, and when the grinding roller shaft e can be observed to pass through two thirds of the height of the self-aligning roller bearing g through the visible hole of the guiding tool seat b, the anti-collision tool h and the guiding tool seat b are detached;
and S5, as shown in the figure 5, after the grinding roller shaft e is completely installed in the self-aligning roller bearing g, the bearing outer ring limiting tool a is removed, and the large vertical grinding roller bearing is replaced.
Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.
Claims (10)
1. The utility model provides a frock assembly for large-scale grinding roller bearing immediately which characterized in that: including spacing frock of bearing inner race (a), direction frock seat (b) and anticollision frock (h), anticollision frock (h) includes mount pad (1), the level opening is equipped with adjusting hole (5) and vertical direction through-hole (4) of having seted up in mount pad (1), adjusting hole (5) with direction through-hole (4) intercommunication, flexible adjusting part (3) are worn to be equipped with in adjusting hole (5) the activity, be equipped with guide bar (6) in direction through-hole (4), the upper portion of guide bar (6) stretches into in adjusting hole (5) with flexible adjusting part (3) fixed connection.
2. The tool assembly for the grinding roller bearing of the large-scale vertical mill according to claim 1, wherein: the vertical section of the mounting seat (1) is of a T-shaped structure, the adjusting through hole (5) is formed in the transverse portion of the mounting seat (1), and the guiding through hole (4) is formed in the vertical portion of the mounting seat (1).
3. The tool assembly for the grinding roller bearing of the large-scale vertical mill according to claim 2, wherein: the telescopic adjusting assembly (3) comprises an adjusting rod (31) and an adjusting cam (34) which are opposite to each other, the inner ends of the adjusting rod (31) are respectively abutted against the adjusting cam (34), the outer ends of the adjusting rod (31) penetrate out of two holes of the adjusting through hole (5), the adjusting rod (31) is connected with the adjusting through hole (5) through an elastic piece (32), and the adjusting cam (34) is fixedly connected with the guide rod (6).
4. The tool assembly for the grinding roller bearing of the large-scale vertical mill according to claim 3, wherein: the elastic piece (32) is a reset spring, the reset spring is sleeved on the adjusting rod (31), the adjusting rod (31) is located at one section of the adjusting through hole (5) and is fixedly sleeved with a limiting ring (33), and two ends of the reset spring are respectively fixedly connected with the hole wall of the adjusting through hole (5) and the limiting ring (33).
5. The tool assembly for the grinding roller bearing of the large-scale vertical mill according to claim 3, wherein: the adjusting cam (34) is a disc-shaped wheel, a concave surface is arranged on the outer ring surface of the disc-shaped wheel in a right-to-right mode, the inner end of the adjusting rod (31) is abutted against the outer ring surface of the disc-shaped wheel, the upper end of the guide rod (6) is fixedly arranged on the axis of the disc-shaped wheel in a penetrating mode, and the lower end of the guide rod (6) penetrates through the guide through hole (4) and is fixedly sleeved with a nut.
6. The tool assembly for the grinding roller bearing of the large-scale vertical mill according to claim 4, wherein: the adjusting device is characterized in that a positioning plate (7) is detachably mounted at the opening of the adjusting through hole (5), a positioning hole (71) is formed in the positioning plate (7), the positioning hole (71) and the adjusting through hole (5) are coaxially arranged, and the diameter of the positioning hole (71) is the same as the outer diameter of the adjusting rod (31).
7. The tooling assembly for the grinding roller bearing of the large-scale vertical mill according to claim 6, wherein: the tool assembly for the grinding roller bearing of the large-scale vertical mill according to claim 1, wherein: the mounting seat (1) is provided with a plurality of screw holes (11).
8. The tool assembly for the grinding roller bearing of the large-scale vertical mill according to claim 1, wherein: the mounting seat (1) is made of steel.
9. The tool assembly for the grinding roller bearing of the large-scale vertical mill according to claim 1, wherein: the center of the guide tool seat (b) is provided with a positioning guide hole (b1), and a visual hole (b2) is arranged around the positioning guide hole (b 1).
10. A bearing replacing method for a grinding roller bearing of a large vertical mill is characterized by comprising the following steps:
s1, a grinding roller body (c) is placed on a grinding roller support (d), and a bearing outer ring limiting tool (a) and a guiding tool seat (b) are installed below a cavity of the grinding roller body (c) after being assembled, so that a positioning guide hole (b1) of the guiding tool seat (b) and the cavity of the grinding roller body (c) are kept coaxial;
s2, fixedly connecting the anti-collision tool (h) with the bottom of the grinding roller shaft (e) through a bolt, then enabling the bearing distance ring (f) to penetrate through the anti-collision tool (h) to be sleeved on the grinding roller shaft (e), rotating the guide rod (6), driving the adjusting cam (34) to rotate so as to eject the adjusting rod (31) in the adjusting through hole (5), and blocking and limiting the bearing distance ring (f) by the outer end of the adjusting rod (31);
s3, a crane hoists a grinding roller shaft (e) to be gradually installed in a cavity of a grinding roller body (c), the vertical part of an installation seat (1) can penetrate through a positioning guide hole (b1) in a guide tool seat (b), so that the grinding roller shaft (e) does not deviate when falling, through a visual hole (b2) of the guide tool seat (b), when a bearing distance ring (f) falls to a position which is several millimeters away from a self-aligning roller bearing (g) in the cavity of the grinding roller body (c), a guide rod (6) can be observed to rotate to a concave surface, so that an adjusting rod (31) is retracted into an adjusting through hole (5), the bearing distance ring (f) freely falls for several millimeters and then contacts with the self-aligning roller bearing (g), and impact on the self-aligning roller bearing (g) is avoided;
s4, the grinding roller shaft (e) continuously falls down, and when the grinding roller shaft (e) can be observed to pass through two thirds of the height of the self-aligning roller bearing (g) through a visible hole of the guide tool seat (b), the anti-collision tool (h) and the guide tool seat (b) are detached;
and S5, after the grinding roller shaft (e) is completely installed in the self-aligning roller bearing (g), the bearing outer ring limiting tool (a) is removed, and the large vertical grinding roller bearing is replaced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010015110.0A CN111185864A (en) | 2020-01-07 | 2020-01-07 | Tool assembly for large-scale vertical mill grinding roller bearing and bearing replacement method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010015110.0A CN111185864A (en) | 2020-01-07 | 2020-01-07 | Tool assembly for large-scale vertical mill grinding roller bearing and bearing replacement method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111185864A true CN111185864A (en) | 2020-05-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010015110.0A Pending CN111185864A (en) | 2020-01-07 | 2020-01-07 | Tool assembly for large-scale vertical mill grinding roller bearing and bearing replacement method |
Country Status (1)
| Country | Link |
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| CN (1) | CN111185864A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115070681A (en) * | 2022-07-19 | 2022-09-20 | 重庆瑞思运维科技有限公司 | Bearing disassembling process |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211966574U (en) * | 2020-01-02 | 2020-11-20 | 重庆瑞思运维科技有限公司 | Tool assembly for large-scale vertical mill grinding roller bearing |
-
2020
- 2020-01-07 CN CN202010015110.0A patent/CN111185864A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211966574U (en) * | 2020-01-02 | 2020-11-20 | 重庆瑞思运维科技有限公司 | Tool assembly for large-scale vertical mill grinding roller bearing |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115070681A (en) * | 2022-07-19 | 2022-09-20 | 重庆瑞思运维科技有限公司 | Bearing disassembling process |
| CN115070681B (en) * | 2022-07-19 | 2023-12-15 | 重庆瑞思运维科技有限公司 | Bearing dismantling process |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200522 |
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| RJ01 | Rejection of invention patent application after publication |