CN112091878B - Disassembling tool for bolt connection type worm gear and pinion fixing end and online replacement method - Google Patents
Disassembling tool for bolt connection type worm gear and pinion fixing end and online replacement method Download PDFInfo
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- CN112091878B CN112091878B CN202010821989.8A CN202010821989A CN112091878B CN 112091878 B CN112091878 B CN 112091878B CN 202010821989 A CN202010821989 A CN 202010821989A CN 112091878 B CN112091878 B CN 112091878B
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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
- B25B27/02—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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Abstract
The invention provides a disassembling tool for a bolt connection type worm gear pinion fixed end, which comprises a gear ring pressing rod and a drawing hub device, and also provides a method for replacing the bolt connection type worm gear pinion fixed end on line by adopting the gear ring pressing rod and the drawing hub device, the gear wheel gear ring is separated from the worm wheel hub by the gear pressure rod, the worm wheel hub is taken out by the hub drawing device, the invention meets the technical requirement of assembly of the flexible transmission device, can realize online maintenance without integrally dismounting the worm gear case, greatly reduces the downtime, improves the effective operation rate of the sintering machine, and can also be suitable for online replacement of bearings or gears of similar structural equipment, thereby improving the maintenance efficiency.
Description
Technical Field
The invention relates to a maintenance method of a flexible transmission device, in particular to a disassembling tool of a bolt connection type worm gear and pinion fixing end and an online replacement method.
Background
In the flexible transmission device, a worm gear box body is usually designed in an integrated structure mode, the normal assembly process is that a pinion shaft is assembled to the worm gear box body firstly, then a worm gear is assembled to the pinion shaft, then a worm is assembled to the worm gear box body, taking a sintering machine as an example, a multi-point meshing flexible transmission device is adopted for power input of a star wheel at the head of the sintering machine, and the device is divided into a left type and a right type and can adapt to the transmission arrangement mode of the sintering machine. When the accident that the pinion fixed end bearing is damaged occurs in the worm gear box, according to the conventional maintenance mode, maintenance personnel need to firstly integrally detach the left (or right) half-suspended worm gear box and repair the pinion fixed end bearing in an off-line state, time and labor are consumed, the repair work can be completed within more than 48 hours, but the production task of the sintering machine is heavy, the longer the shutdown time is, the greater the loss of an enterprise is, therefore, a tool and a method for replacing the bearing at the pinion fixed end on line are necessary to be provided, and the shutdown repair time is greatly reduced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a disassembling tool for a bolt connection type worm gear pinion fixing end and an online replacing method.
The technical purpose of the invention is realized by the following technical scheme:
the dismounting tool for the fixed end of the bolt connection type worm gear pinion comprises a gear ring pressure rod which is supported by a worm gear box and used for ejecting a worm gear ring and a hub drawing device for drawing out a worm gear hub;
the gear ring pressure lever comprises a pressure lever main body, a screw rod and a pressure lever screw rod, wherein the screw rod is in threaded connection with the two ends of the pressure lever main body in the horizontal direction, the pressure lever screw rod is in threaded connection with the middle of the pressure lever main body in the vertical direction and is used for ejecting the worm gear ring, and a supporting part used for supporting in a worm gear case is arranged at one end, away from the pressure lever main body, of the screw rod;
the hub drawing device comprises a fixed plate, a plurality of fixed screws which are arranged perpendicular to the fixed plate and used for fixing the worm wheel hub, and a top shaft screw which is in threaded connection with the middle part of the fixed plate and is in contact with the pinion shaft so as to eject the worm wheel hub;
when changing pinion fixed end bearing, use the ring gear depression bar earlier to exert pressure to the worm wheel ring gear in the worm-gear case for worm wheel ring gear and the separation of worm wheel hub, pull out worm wheel hub through drawing the wheel hub device, then take out worm wheel ring gear, thereby expose pinion fixed end bearing end cover, realize changing pinion fixed end bearing on line.
In one embodiment, the number of the fixing screws is at least two, the two fixing screws are respectively arranged at two ends of the fixing plate, the fixing rod is in threaded connection with the worm wheel hub, the fixing plate is fixedly connected with the worm wheel hub, and when the top shaft screw is rotated, the fixing plate drives the worm wheel hub to move outwards, so that the worm wheel hub is separated from the worm gear ring.
In one embodiment, the top shaft screw is provided with a top plate at one end close to the pinion shaft, the top plate is rotatably connected with the top shaft screw, the top plate is in contact with the pinion shaft, the stress area is increased, the top shaft screw is prevented from scratching the surface of the pinion shaft, and the top plate is rotatably connected with the top shaft screw, so that the rotating resistance of the top shaft screw is greatly reduced, and the worm wheel hub and the worm gear ring are conveniently separated.
In one embodiment, a pressing plate is arranged at one end of the pressing rod screw rod, which is close to the worm gear ring, the pressing plate is rotatably connected with the pressing rod screw rod, the pressing plate is in contact with the worm gear ring, the stress area is increased, the pressing rod screw rod is prevented from scratching the surface of the worm gear ring, and the resistance to rotation of the pressing rod screw rod is greatly reduced due to the rotatable connection of the pressing plate and the pressing rod screw rod.
In one embodiment, the supporting part is an inner arc supporting block with an arc-shaped outer side surface, the outer side surface of the inner arc supporting block is attached to the inner wall of the worm gear case, the outer side surface of the inner arc supporting block is an arc-shaped surface, so that the gear ring pressure bar can adapt to the inner wall of the worm gear case conveniently, and the gear ring pressure bar can be fixed in the worm gear case.
In one embodiment, the outer side surface of the inner arc supporting block is a rough friction surface, so that the gear ring compression bar is favorably fixed in the worm gear case.
In one embodiment, the inner arc supporting block is rotatably connected with the screw rod, and can be self-adapted to the side wall of the worm gear case when the screw rod is screwed out according to the size of the worm gear case, so that the gear ring pressing rod can be suitable for worm gear cases with different sizes.
In one embodiment, the inner arc supporting block is a permanent magnet, the inner arc supporting block is adsorbed on the inner wall of the worm gear case, and the gear ring pressure lever is fixed in the worm gear case through the screw rod.
The on-line replacement method of the fixed end of the bolt connection type worm gear pinion comprises the following steps of using the gear ring compression bar and the hub drawing device,
a first fixing part of the worm gear ring, which is close to the fixed end of the pinion, is fixedly connected with a second fixing part of the worm gear hub, which is far away from the fixed end of the pinion, through a connecting bolt, the worm gear ring is connected with the worm, and the connecting bolt is removed, so that the worm gear hub and the worm gear ring are in a non-connected state;
the gear ring pressure rod is placed outside the worm gear ring, the screw rods at two ends of the gear ring pressure rod are screwed out, so that the supporting part of the screw rod is contacted with the inner wall of the worm gear box, the screw rods at two ends of the gear ring pressure rod fix the gear ring pressure rod in the worm gear box, and then the pressure rod screw rod in the middle of the gear ring pressure rod is rotated to apply pressure to the worm gear ring so that the worm gear ring is separated from the worm gear hub;
the outer surface of the worm wheel hub is provided with a plurality of internal thread holes, a fixing screw of the drawing hub device is correspondingly screwed into the internal thread holes of the worm wheel hub, so that a fixing plate of the drawing hub device is fixedly connected with the worm wheel hub, a jacking shaft screw is rotated to apply pressure to the pinion shaft, the pressure applied to the pinion shaft by the jacking shaft screw is converted into power for outward movement of the fixing plate due to the fact that the pinion shaft is fixed, the rotation of the jacking shaft screw is converted into horizontal movement of the fixing plate far away from the pinion shaft, and the fixing plate drives the gear hub to move outwards until the gear hub is separated from the pinion shaft along with the rotation of the jacking shaft screw;
taking down the gear ring pressure lever, taking out the worm gear ring, exposing the bearing end cover of the fixed end of the pinion, disassembling the bearing end cover of the fixed end of the pinion, and exposing the bearing of the fixed end of the pinion;
and replacing the damaged pinion fixing end bearing and reinstalling the pinion fixing end.
In one embodiment, the gear ring pressure rods are fixedly arranged above and below the outer side of the worm gear ring in the worm gear box respectively, and the pressure rod screws of the two gear ring pressure rods simultaneously apply pressure to the worm gear ring, so that the worm gear ring is separated from the worm wheel hub, the whole worm gear ring is separated from the worm wheel hub, and the worm wheel hub is taken out by a subsequent hub drawing device.
The invention has the following beneficial effects:
the invention provides a gear ring pressure lever and a drawing hub device for online replacement of a bearing at a fixed end of a bolt-connected worm gear pinion, wherein when the bearing at the fixed end of the pinion is replaced, the gear ring pressure lever is firstly used for applying pressure to a worm gear ring in a worm gear box so as to separate the worm gear ring from a worm gear hub, the worm gear hub is pulled out by drawing the hub device, and then the worm gear ring is taken out, so that an end cover of the bearing at the fixed end of the pinion is exposed, and the online replacement of the bearing at the fixed end of the pinion is realized;
the invention also provides an online replacement method of the bolt connection type worm gear fixed end and pinion fixed end by adopting the gear ring compression bar and the hub drawing device, the worm gear ring is separated from the worm gear hub by the gear compression bar, the worm gear hub is taken out by the hub drawing device, and then the worm gear ring is taken out, so that the pinion fixed end bearing end cover is exposed, and the online replacement of the pinion fixed end bearing is realized.
Drawings
FIG. 1 is a schematic view of a normal state of a worm gear case;
FIG. 2 is a schematic view of the connection of the worm gear ring to the worm gear hub;
FIG. 3 is a schematic view of a worm gear case in a service condition using the tool and method of the present invention;
FIG. 4 is a schematic front view of the ring gear strut of the present invention;
FIG. 5 is a top schematic view of the ring gear strut of the present invention;
fig. 6 is a schematic structural view of the drawing hub device of the present invention.
In the figure: 1-pinion, 11-pinion fixed end bearing, 12-pinion fixed end bearing end cover, 13-pinion shaft, 2-worm gear case, 21-worm gear ring, 211-first fixed part, 22-worm gear hub, 221-second fixed part, 23-worm, 24-connecting bolt, 3-gear ring compression bar, 31-compression bar body, 32-lead screw, 33-compression bar screw, 34-inner arc supporting block, 35-pressing plate, 4-drawing hub device, 41-fixing plate, 42-fixing screw, 43-top shaft screw and 44-top plate.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
It should be noted that all the directional terms such as "upper" and "lower" referred to herein are used with respect to the view of the drawings, and are only for convenience of description, and should not be construed as limiting the technical solution.
As shown in fig. 1-6, fig. 1 shows the structure of the worm gear case 2 in a normal state, and fig. 3 shows the structure of the worm gear case 2 in a maintenance state using the tool and method of the present invention.
Example 1
The disassembling tool for the fixed end of the bolt connection type worm gear pinion comprises a gear ring pressure lever 3 which is supported by a worm gear box 2 and ejects a worm gear ring 21 and a drawing hub device 4 which draws out a worm gear hub 22;
the gear ring pressure lever 3 comprises a pressure lever main body 31, two screw rods 32 in threaded connection with the two ends of the pressure lever main body 31 in the horizontal direction and a pressure lever screw 33 in threaded connection with the middle of the pressure lever main body 31 in the vertical direction and used for ejecting the worm gear ring 21, one end of the screw rod 32, which is far away from the pressure lever main body 31, is rotatably connected with an inner arc supporting block 34 used for supporting in the worm gear case 2, the inner arc supporting block 34 is a permanent magnet, and the outer side surface of the inner arc supporting block 34 is a rough friction surface, so that the gear ring pressure lever 3 can be fixed in the worm gear case 2;
the drawing hub device 4 includes a fixing plate 41, a plurality of fixing screws 42 provided perpendicularly to the fixing plate 41 and fixing the worm wheel hub 22, and a top shaft screw 43 threadedly coupled to a middle portion of the fixing plate 41 and contacting the pinion shaft 13 to eject the worm wheel hub 22.
Example 2
As shown in fig. 4-5, on the basis of embodiment 1, a pressure plate 35 is disposed at one end of the pressure rod screw 33 of the gear ring pressure rod 3, which is close to the worm gear ring 21, the pressure plate 35 is rotatably connected with the pressure rod screw 33, the pressure plate 35 is in contact with the worm gear ring 21, so as to increase the stressed area, avoid scratching the surface of the worm gear ring 21 by the pressure rod screw 33, and greatly reduce the resistance to rotation of the pressure rod screw 33 because the pressure plate 35 is rotatably connected with the pressure rod screw 33; as shown in fig. 6, on the basis of embodiment 1, a top plate 44 is disposed at one end of the top shaft screw 43 of the drawing hub device 4 close to the pinion shaft 13, the top plate 44 is rotatably connected to the top shaft screw 43, the top plate 44 contacts with the pinion shaft 13, the force-bearing area is increased, the top shaft screw 43 is prevented from scratching the surface of the pinion shaft 13, and the top plate 44 is rotatably connected to the top shaft screw 43, so that the resistance to rotation of the top shaft screw 43 is greatly reduced, and the worm wheel hub 22 and the worm gear ring 21 are conveniently separated.
The invention also provides an online replacement method of the bolt-connected worm gear and pinion fixed end, taking online replacement of a pinion fixed end bearing of a flexible transmission device of a sintering machine as an example, the end cover of a worm gear box 2 is detached to expose parts in the worm gear box 2, the pinion fixed end bearing 11 is arranged at the joint of a pinion shaft 13 and the worm gear box 2, the pinion fixed end bearing 11 is provided with a pinion fixed end bearing end cover 12, a worm gear hub 22 is sleeved on the pinion shaft 13, a worm gear ring 21 is sleeved on the worm gear hub 22, the gear ring pressure lever 3 and the drawing hub device 4 in the embodiment 1 are used, and the method comprises the following steps,
a first fixing part 211 of the worm gear ring 21 close to the fixed end of the pinion is fixedly connected with a second fixing part 221 of the worm gear hub 22 far away from the fixed end of the pinion through a connecting bolt 24, the worm gear ring 21 is connected with the worm 23, and the connecting bolt 24 is removed, so that the worm gear hub 22 and the worm gear ring 21 are in a non-connection state;
the upper part and the lower part of the outer side of a worm gear ring 21 in a worm gear box 2 are respectively provided with a gear ring pressing rod 3, screw rods 32 at two ends of the gear ring pressing rod 3 are screwed out, so that inner arc supporting blocks 34 of the screw rods 32 are in contact with the inner wall of the worm gear box 2, the magnetic inner arc supporting blocks 34 are adsorbed on the inner wall of the worm gear box 2, the screw rods 32 at two ends of the gear ring pressing rod 3 fix the gear ring pressing rod 3 in the worm gear box 2, and pressing rod screws 33 of the upper gear ring pressing rod 3 and the lower gear ring pressing rod 3 apply pressure to the worm gear ring 21, so that the worm gear ring 21 is separated from a worm wheel hub 22, the whole worm gear ring 21 is favorably separated from the worm wheel hub 22, and the worm wheel hub 22 can be conveniently taken out by a subsequent drawing hub device 4;
the outer surface of the worm wheel hub 22 is provided with a plurality of internal thread holes, the fixing screw 42 of the drawing hub device 4 is correspondingly screwed into the internal thread holes of the worm wheel hub 22, so that the fixing plate 41 of the drawing hub device 4 is fixedly connected with the worm wheel hub 22, the top shaft screw 43 is screwed to enable the top shaft screw 43 to apply pressure to the pinion shaft 13, as the pinion shaft 13 is fixed, the pressure applied to the pinion shaft 13 by the top shaft screw 43 is converted into power for outward movement of the fixing plate 41, the rotation of the top shaft screw 43 is converted into horizontal movement of the fixing plate 41 far away from the pinion shaft 13, and along with the rotation of the top shaft screw 43, the fixing plate 41 drives the gear hub to move outward until the gear hub is separated from the pinion shaft 13;
taking down the gear ring pressure lever 3, taking out the worm gear ring 21, exposing the pinion fixed end bearing end cover 12, disassembling the pinion fixed end bearing end cover 12 and exposing the pinion fixed end bearing 11;
and taking out the damaged pinion fixed end bearing 11, replacing a new pinion fixed end bearing 11, reinstalling the pinion fixed end bearing end cover 12, checking and cleaning the worm gear ring 21 and the worm 23, reinstalling the worm gear ring 21 and the worm wheel hub 22, and completing the replacement of the pinion fixed end bearing 11.
The invention meets the technical requirements of assembly of the flexible transmission device, does not need to integrally disassemble the worm gear case 2, can realize online maintenance, greatly reduces the downtime, improves the effective operation rate of the sintering machine, and can also be suitable for online replacement of bearings or gears of equipment with the same structure, thereby improving the maintenance efficiency.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (9)
1. The on-line replacement method of the bolt connection type worm gear pinion fixed end is characterized in that a disassembling tool comprises a gear ring pressure lever (3) which supports and ejects out a worm gear ring (21) in a worm gear box (2) and a hub pulling device (4) which pulls out a worm gear hub (22);
the gear ring pressure lever (3) comprises a pressure lever main body (31), a screw rod (32) in threaded connection with two ends of the pressure lever main body (31) in the horizontal direction, and a pressure lever screw rod (33) which is in threaded connection with the middle of the pressure lever main body (31) in the vertical direction and is used for ejecting the worm gear ring (21), and one end, away from the pressure lever main body (31), of the screw rod (32) is provided with a supporting part used for supporting in the worm gear box (2);
the hub drawing device (4) comprises a fixing plate (41), a plurality of fixing screws (42) which are arranged perpendicular to the fixing plate (41) and used for fixing the worm wheel hub (22), and a top shaft screw (43) which is in threaded connection with the middle of the fixing plate (41) and is in contact with the pinion shaft (13) so as to eject out the worm wheel hub (22);
the using steps comprise; a first fixing part (211) of the worm gear ring (21) close to the fixed end of the pinion is fixedly connected with a second fixing part (221) of the worm gear hub (22) far away from the fixed end of the pinion through a connecting bolt (24), the worm gear ring (21) is connected with the worm (23), and the connecting bolt (24) is removed, so that the worm gear hub (22) and the worm gear ring (21) are in a non-connection state;
the gear ring pressing rod (3) is placed outside a worm gear ring (21), the screw rods (32) at two ends of the gear ring pressing rod (3) are screwed out, so that the supporting part of the screw rods (32) is in contact with the inner wall of the worm gear box (2), the screw rods (32) at two ends of the gear ring pressing rod (3) fix the gear ring pressing rod (3) in the worm gear box (2), and then the pressing rod screw rod (33) in the middle of the gear ring pressing rod (3) is rotated to apply pressure to the worm gear ring (21) so that the worm gear ring (21) is separated from a worm gear hub (22);
the outer surface of the worm wheel hub (22) is provided with a plurality of internal thread holes, a fixing screw rod (42) of the pulling hub device (4) is correspondingly screwed into the internal thread holes of the worm wheel hub (22), so that a fixing plate (41) of the pulling hub device (4) is fixedly connected with the worm wheel hub (22), a top shaft screw rod (43) is rotated to enable the top shaft screw rod (43) to apply pressure to the pinion shaft (13), and the fixing plate (41) drives the gear hub to move outwards until the gear hub is separated from the pinion shaft (13);
taking down the gear ring pressure lever (3), taking out the worm gear ring (21), exposing the bearing end cover (12) of the fixed end of the pinion, disassembling the bearing end cover (12) of the fixed end of the pinion, and exposing the bearing (11) of the fixed end of the pinion;
and replacing the damaged pinion fixing end bearing and reinstalling the pinion fixing end.
2. The method for replacing a fixed end of a bolt-coupled worm gear pinion on line as claimed in claim 1, wherein the gear ring pressing rods (3) are fixedly provided above and below the outer side of the worm gear ring (21) in the worm gear case (2), respectively, and the pressing rod screws (33) of the two gear ring pressing rods (3) apply pressure to the worm gear ring (21) at the same time, so that the worm gear ring (21) is separated from the worm wheel hub (22).
3. The method for replacing the fixed end of the bolt-coupled worm gear and pinion as claimed in claim 1, wherein the number of the fixing screws (42) is at least two, and the two fixing screws (42) are respectively provided at both ends of the fixing plate (41).
4. The method for replacing a fixed end of a bolt-coupled worm gear and pinion as claimed in claim 1 or 3, wherein a top plate (44) is provided at an end of the top shaft screw (43) adjacent to the pinion shaft (13), and the top plate (44) is rotatably connected to the top shaft screw (43).
5. The method for replacing the fixed end of the bolt-coupled worm gear pinion on line as claimed in claim 1, wherein the end of the compression rod screw (33) close to the worm gear ring (21) is provided with a pressure plate (35), and the pressure plate (35) is rotatably connected with the compression rod screw (33).
6. The method for replacing the fixed end of the bolt-coupled worm gear and pinion as claimed in claim 5, wherein the supporting portion is an inner arc supporting block (34) having an outer side surface of an arc surface, and the outer side surface of the inner arc supporting block (34) is attached to the inner wall of the worm gear case (2).
7. The method for replacing a fixed end of a bolt-coupled worm gear and pinion as claimed in claim 6, wherein an outer side surface of the inner arc support block (34) is a rough friction surface.
8. The method for replacing a fixed end of a bolt-coupled worm gear pinion in an on-line manner as claimed in claim 7, wherein the inner arc support block (34) is rotatably connected to the screw rod (32).
9. The method for on-line replacement of fixed ends of bolt-coupled worm and pinion gears as claimed in any one of claims 6 to 8 wherein the inner arc support block (34) is a permanent magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010821989.8A CN112091878B (en) | 2020-08-15 | 2020-08-15 | Disassembling tool for bolt connection type worm gear and pinion fixing end and online replacement method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010821989.8A CN112091878B (en) | 2020-08-15 | 2020-08-15 | Disassembling tool for bolt connection type worm gear and pinion fixing end and online replacement method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112091878A CN112091878A (en) | 2020-12-18 |
| CN112091878B true CN112091878B (en) | 2022-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010821989.8A Active CN112091878B (en) | 2020-08-15 | 2020-08-15 | Disassembling tool for bolt connection type worm gear and pinion fixing end and online replacement method |
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| Country | Link |
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| CN (1) | CN112091878B (en) |
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| CN112091878A (en) | 2020-12-18 |
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