CN106734222B - Replacing device and replacing method for rolling mill lower roll upper speed reducer - Google Patents
Replacing device and replacing method for rolling mill lower roll upper speed reducer Download PDFInfo
- Publication number
- CN106734222B CN106734222B CN201611069972.1A CN201611069972A CN106734222B CN 106734222 B CN106734222 B CN 106734222B CN 201611069972 A CN201611069972 A CN 201611069972A CN 106734222 B CN106734222 B CN 106734222B
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- Prior art keywords
- speed reducer
- trolley
- rolling mill
- lifting platform
- guide
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- 238000005096 rolling process Methods 0.000 title claims abstract description 80
- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 238000003825 pressing Methods 0.000 claims abstract description 13
- 230000009467 reduction Effects 0.000 claims description 22
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 5
- 239000003921 oil Substances 0.000 claims description 4
- 238000005553 drilling Methods 0.000 claims description 3
- 239000010687 lubricating oil Substances 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 238000010276 construction Methods 0.000 description 6
- 230000003028 elevating effect Effects 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 229910001060 Gray iron Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
the invention provides a replacing device for an upper rolling press speed reducer of a rolling mill, which comprises a trolley, a speed reducer and a speed reducer, wherein the trolley is used for providing support; the four wheel sets are fixedly arranged at the four corners of the bottom of the trolley and are placed on the two tracks; the lifting platform is positioned right above the trolley; the guide mechanism is arranged between the lifting platform and the trolley and used for providing guidance; the supporting cylinder is fixedly arranged at the central position of the top of the lifting platform, and four guide grooves are formed by outwards extending the cylinder wall and are matched with vertical ribs of a shell of an upper pressing speed reducer of a lower rolling mill; and the jack is arranged at the bottom of the guide mechanism and used for lifting the lifting platform and realizing replacement of the rolling mill lower roll upper speed reducer. The replacing device has the advantages of good safety, reasonable structure, convenient operation, strong stability, capability of improving the working efficiency to the maximum extent and the like. Meanwhile, the invention also provides a replacement method of the rolling mill lower roll pressing speed reducer.
Description
Technical Field
The invention belongs to the technical field of replacement of steel rolling equipment, and particularly relates to a replacement device of an upper reduction gear of a lower roll of a steel rolling mill and a replacement method of the upper reduction gear of the lower roll of the steel rolling mill.
Background
The rolling mill is key production equipment of a rolling mill production line, and rolling blanks into pre-designed material shapes or finished products is realized by means of fine adjustment of rolling pass with different sizes on rollers arranged in the rolling mill and an adjusting mechanism of the rolling mill.
The rolling mill adjusting mechanism is divided into an axial adjusting mechanism and a radial adjusting mechanism, wherein the radial adjusting mechanism consists of a pressing adjusting mechanism and a pressing adjusting mechanism, the pressing adjusting mechanism is arranged at the bottom of a rolling mill housing, and a speed reducer is driven to rotate by a motor and a hydraulic motor or by manpower in a transmission mode, so that the vertical lifting of a lead screw is realized, and the online adjustment of the lifting of a lower roll of the rolling mill is completed. At present, the method for replacing the lower roll pressing speed reducer of the rolling mill is to manually build a scaffold after clearing iron scales and sludge at the bottom of a pit at the lower part of a housing of the rolling mill, and then replace the lower roll pressing speed reducer by using a jack, a chain block, a rope and the like.
disclosure of Invention
The invention aims to provide a replacing device and a replacing method for a rolling mill lower roll pressing-in speed reducer, which at least solve the technical problem of complicated replacing procedures in the prior art and can solve the technical problem of low replacing efficiency in the prior art.
In order to solve the problems, the invention provides a replacing device and a replacing method of a rolling mill lower roll upper reduction gear, which have the technical scheme that:
A replacing device of a rolling mill lower roll upper reduction gear comprises a trolley, a speed reducer and a speed reducer, wherein the trolley is used for providing support; the four wheel sets are fixedly arranged at the four corners of the bottom of the trolley and are placed on the two tracks; the lifting platform is positioned right above the trolley; the four guide rods are arranged between the lifting platform and the trolley and used for providing guidance; the supporting cylinder is fixedly arranged at the central position of the top of the lifting platform, and four guide grooves are formed by outwards extending the cylinder wall and are matched with vertical ribs of a shell of an upper pressing speed reducer of a lower rolling mill; and the four jacks are arranged at the bottoms of the four guide rods and are used for lifting the lifting platform and realizing replacement of the rolling mill lower rolling press upper speed reducer.
The above-described replacement device for the rolling mill lower roll upper reduction gear is more preferably: the trolley comprises a trolley body and four supporting legs.
the above-described replacement device for the rolling mill lower roll upper reduction gear is more preferably: the guide mechanism comprises four guide sleeves, is arranged at the four corners of the trolley body and vertically penetrates through the trolley body; and four guide bars, four the guide bar one-to-one is vertically arranged in four the inside of uide bushing and run through the uide bushing, the upper end of guide bar with the elevating platform is the interference fit equipment, and is located the four corners of elevating platform bottom.
the above-described replacement device for the rolling mill lower roll upper reduction gear is more preferably: the length of the guide rod is greater than the height of the trolley.
The above-described replacement device for the rolling mill lower roll upper reduction gear is more preferably: the guide sleeve is internally embedded with a bush, the top of the guide sleeve is provided with an oil drilling hole, and the inner wall of the bush is provided with radial and circumferential lubricating oil grooves for reducing the friction resistance with a guide rod for lifting movement.
the above-described replacement device for the rolling mill lower roll upper reduction gear is more preferably: the two supporting plates are cushioned between the trolley and the lifting platform, so that the bottom end of the guide rod is higher than the ground.
The above-described replacement device for the rolling mill lower roll upper reduction gear is more preferably: the locking device further comprises a stop piece, wherein the stop piece is placed between the track and the wheel set and used for locking the wheel set.
The above-described replacement device for the rolling mill lower roll upper reduction gear is more preferably: still include the iron chain, the stop member passes through the iron chain is installed on the platform truck.
The above-described replacement device for the rolling mill lower roll upper reduction gear is more preferably: the wheel tread of the wheel set is provided with a rim structure, the tread of the wheel set is in stable contact with the upper plane of the track, and the rims fall into the inner sides of the two tracks.
The invention also provides a replacing method of the lower roll pressing-in speed reducer of the rolling mill, which utilizes the replacing device to replace the lower roll pressing-in speed reducer of the rolling mill and comprises the following steps:
cleaning the track, and placing the supporting plate between the trolley and the lifting table;
secondly, placing the replacing device on the track and positioning;
step three, lifting the lifting platform, and disassembling a lower roller of a rolling mill to press an old speed reducer;
Step four, the lifting platform is dropped, the old speed reducer is hoisted out in a reverse transportation mode, and the new speed reducer is hoisted on the lifting platform;
Fifthly, placing the replacing device with a new speed reducer on the track and positioning;
Sixthly, lifting the lifting platform and installing a new speed reducer;
and seventhly, dropping the lifting platform, and transporting the lifting platform to lift out the replacing device.
compared with the prior art, the invention has the advantages that: the replacing device of the rolling mill lower roll upper pressing speed reducer has the advantages of good safety, reasonable structure, convenient operation, strong stability, capability of improving the working efficiency to the maximum extent and the like.
the replacement method of the lower roll pressing-in speed reducer of the rolling mill has the advantages that the replacement basic frames are the same when the lower roll pressing-in speed reducer of the rolling mill with different roll system sizes is replaced, the replacement basic frames are directly used for reference and are mechanically used when the lower roll pressing-in speed reducer with different roll system sizes and different structural forms is replaced, the maintenance efficiency of personnel can be improved to the maximum extent on the basis of ensuring the construction safety, and the problems of construction potential safety hazards, construction period delay, engineering rework and personnel idling caused by step omission or reversal are avoided.
Drawings
FIG. 1 is a front view of an apparatus for replacing a rolling mill roll-up reduction gear according to a preferred embodiment of the present invention.
FIG. 2 is a left side view of the replacing device of the rolling mill roll-up reduction gear according to the preferred embodiment of the present invention.
FIG. 3 is a plan view of the replacing device of the rolling mill roll-up reduction gear according to the preferred embodiment of the present invention.
in the figure: 1-shoe type stopper; 2-iron chain; 3-a storage box; 4-a guide rod; 5-a lifting platform; 6, a guide sleeve; 7-trolley; 8-outer hexagonal high-strength bolt; 9-wheel group; 10-a track; 11-a support cylinder; 12-guide groove.
Detailed Description
the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, 2 and 3, the replacing device of the rolling mill lower roll upper speed reducer according to the preferred embodiment of the present invention mainly comprises two rails 10 installed on the cement floor under the pit of the rolling mill lower roll; a trolley 7 for providing support; the four wheel sets 9 are fixedly arranged at the four corners of the bottom of the trolley 7, and the four wheel sets 9 are placed on the two tracks 10; the lifting platform 5 is positioned right above the trolley 7; the guide mechanism is arranged between the lifting platform 5 and the trolley 7 and used for providing guidance; the supporting cylinder 11 is fixedly arranged at the central position of the top of the lifting table 5, and four guide grooves 12 are formed by outwards extending the cylinder wall, and the four guide grooves 12 are matched with vertical ribs of a shell of a pressing-in speed reducer on a lower roll of a rolling mill; and four jacks are arranged at the bottom of the guide mechanism and used for lifting the lifting platform 5 to realize replacement of the rolling mill lower roll upper speed reducer.
in summary, the replacing device of the rolling mill lower roll upper reduction gear provided by the invention is based on the trolley 7 and the lifting platform 5, realizes the lifting of the lifting platform 5 through the jack, and further realizes the purpose of replacing the rolling mill lower roll upper reduction gear; the replacing device provided by the invention has the advantages of good safety, reasonable structure, convenience in operation, strong stability, capability of improving the working efficiency to the maximum extent and the like. The replacing device of the rolling mill lower roll upper speed reducer provided by the invention is especially suitable for the rolling mill with three or more rolls or with the roll system size not less thana range rolling mill.
in the present invention, in order to facilitate the movement of the exchanging device and at the same time to save space, as shown in fig. 1, 2 and 3, the cart 7 of the present invention includes a cart body and four legs. Thus, the trolley 7 of the present invention can be reduced in weight and facilitated in operation relative to a solid trolley.
in the present invention, in order to provide a good guiding function for the guiding mechanism, as shown in fig. 1, the guiding mechanism of the present invention comprises four guiding sleeves 6, which are arranged at four corners of the trolley body and vertically penetrate through the trolley body; and four guide bars 4, four guide bars 4 one-to-one are vertical to be arranged in the inside of four guide sleeves 6 and run through guide sleeves 6, the upper end of guide bar 4 is assembled with elevating platform 5 in an interference fit manner, and is located the four corners of the bottom of elevating platform 5, and the lower end of guide bar 4 can pass through the table top of trolley 7 and reach the bottom of trolley 7. Similarly, four jacks are arranged at the bottoms of the four guide rods 4 respectively. In the invention, the lifting height is determined by the length of the guide rod 4; as shown in fig. 1, the length of the guide bar 4 is greater than the height of the trolley 7. In order to reduce the weight of the lifting platform 5, the lifting platform 5 is of a frame structure, and the middle part of the frame structure is provided with a circular ring to form a supporting cylinder 11; the lower ends of the four guide rods 4 are positioned at the four corners of the bottom of the frame of the lifting platform 5. A positioning pin is arranged between the guide rod 4 and the lifting platform 5, the guide rod 4 is subjected to carburization quenching treatment (HRC45-50) by adopting forged 45# steel, the support cylinder 11 is welded in the center of the top of the lifting platform 5, four guide grooves 12 are uniformly distributed on the table top of the lifting platform from the circular cylinder wall to the outside, the circular design is mainly based on the appearance structure of the reducer shell and can be designed into various shapes such as square, oval and the like according to actual conditions, the purpose is to realize high efficiency and accurate positioning function of the reducer and avoid shaking, the guide grooves 12 are also based on the appearance structure of the reducer shell, and can also be distributed in other forms at the outer edge of the support cylinder 11 on the table top of the lifting platform 5, so that the vertical rib matching with the reducer shell is facilitated, and the reducer is prevented from. Preferably, a bush made of low-hardness wear-resistant aluminum bronze ZCuAl10Fe3 is embedded in the guide sleeve 6, an oil drilling hole is formed in the top of the guide sleeve 6, and a radial and circumferential dry oil lubricating groove is formed in the inner wall of the bush, so that the friction resistance between the guide sleeve 6 and the guide rod 4 performing lifting movement is reduced.
in order to make the guide rod 4 long enough to meet the requirement of guide support, the invention also comprises two support plates (not shown) which are cushioned between the trolley 7 and the lifting platform 5 so that the bottom end of the guide rod 4 is higher than the ground; therefore, the longer guide rod 4 can be used, and the requirement of replacing the upper reduction gear of the rolling mill lower roll can be met.
to facilitate the mounting of the wheel set 9, the present invention further comprises bolts for mounting the wheel set 9 on the trolley 7, as shown in fig. 2. Preferably, the bolt is an outer hexagonal high-strength bolt 8. Preferably, the wheels of the wheel set 9 of the present invention are made of gray cast iron.
in order to prevent the replacement device from moving or slipping when the replacement device is placed on the rail 10, as shown in fig. 1, the present invention further includes a stopper placed between the rail 10 and the wheel set 9 for locking the wheel set 9. In order to facilitate the installation of the stopper, as shown in fig. 1, the stopper of the present invention is a shoe type stopper 1, and the locking of the wheel sets 9 can be realized through a shoe type surface, and in the present invention, two stoppers are provided, and two wheel sets 9 parallel to each other are respectively locked. In order to facilitate the connection of the stopper to the trolley 7, as shown in fig. 1, the present invention further includes an iron chain 2, and the stopper is mounted on the trolley 7 through the iron chain 2. In order to facilitate the placement of the stop when not in use, the invention further comprises two storage compartments 3, as shown in fig. 1, the storage compartments 3 being arranged on the side corresponding to the set of wheels 9 to be locked for the placement of the stop and other replacement objects.
In the present invention, in order to facilitate the placement and locking of the wheel set 9, as shown in fig. 2, the wheel tread of the wheel set 9 of the present invention is configured with a rim structure, that is, the wheel of the present invention is a wheel structure with a rim. The treads of the four wheel sets 9 of the invention are in smooth contact with the upper plane of the rails 10, and the rims fall into the inner sides of the two rails 10, thus ensuring the stability of the wheel sets 9.
As shown in fig. 1, 2 and 3, the working process of the present invention is described in detail below:
after impurities such as oxidized iron scales and sludge on the track 10 are cleaned, the lifting platform 5 is lifted by means of hoisting equipment and a steel wire rope, two supporting plates are placed in a gap between the lifting platform 5 and the trolley 7, and the height of each supporting plate is the lowest height when the lower part of the guide rod 4 is not in contact with the ground when the lifting platform 5 falls onto the supporting plate. The replacing device is integrally hoisted and transported to the ground rail 10 below the lower roller pit by means of hoisting equipment and a steel wire rope, the treads of the four wheel sets 9 are ensured to be stably contacted with the upper plane of the rail 10, and the wheel rims fall to the inner sides of the two rails 10. The replacing device is positioned under the rolling mill lower roll pressing speed reducer, one end of the line drop is placed at the center of the speed reducer shell, and the other end of the line drop is positioned at the center of the supporting cylinder 11. Two shoe-type stops 1 are placed on the rail 10 and abut against the two wheel sets 9, ensuring that the changing device of the invention is locked. The four jacks with the same specification and model are respectively supported to the bottommost part of the four guide rods 4, the guide rods 4 are extended to the guide sleeve 6 to jack up, so that the lifting platform 5 vertically rises, on the premise of reserving a space for dismounting a bolt of an upper reduction gear on a lower roll of a rolling mill, the support cylinder 11 is ensured to be close to the upper reduction gear on the lower roll of the rolling mill as far as possible, and the guide groove 12 is matched with a stud of a shell of the reduction gear. If the distance between the supporting cylinder 11 and the upper speed reducer of the lower roller of the rolling mill is long when the jacks are lifted to the maximum, cushion blocks need to be added to the four jack bases in sequence. After the connecting bolt of the old speed reducer is disassembled and placed on the storage box 3, the old speed reducer is dropped on the supporting cylinder 11, the lifting platform 5 is stably dropped, then the replacing device of the invention is pushed to the position which is initially dropped on the ground track 10 under the pit, and then the old speed reducer is hoisted to the designated area on the ground. And the new speed reducer is lifted to the supporting cylinder 11 of the lifting platform 5, the stud of the new speed reducer is confirmed to fall into the guide groove 12, the device is repeatedly positioned and locked, and after the lifting platform 5 is lifted, the jack is continuously operated to install the new speed reducer to the position before the old speed reducer is disassembled, and the new speed reducer is fixed through the fastening bolt. Then the replacing device of the invention is pushed to the position just falling on the ground track 10 under the pit, and the whole replacing device is lifted to the ground, namely the replacing of the lower roll pressing-in speed reducer of the rolling mill is completed.
correspondingly, the invention also provides a replacement method of the rolling mill lower roll pressing-in speed reducer, which comprises the following steps:
Firstly, cleaning a track 10, and placing a support plate between a trolley 7 and a lifting platform 5;
Step two, placing the replacing device on the track 10 and positioning;
step three, lifting the lifting platform 5, disassembling the lower roller of the rolling mill and pressing an old speed reducer;
step four, dropping the lifting platform 5, opening the boot-shaped stop piece 1, transporting and lifting the old speed reducer, and lifting the new speed reducer on the lifting platform 5;
Placing a replacing device with a new speed reducer on the track 10 and positioning;
sixthly, lifting the lifting platform 5 and installing a new speed reducer;
and seventhly, dropping the lifting platform 5, opening the boot-shaped stop piece 1, and transporting backwards, hanging out the replacing device.
examples
referring to fig. 1, 2 and 3, the closed memorial archways of the single machine base are replaced respectivelyThe replacing device and the replacing method of the rolling press upper speed reducer of the three-roll rolling mill all need to be replaced by seven replacing steps, and the replacing device comprises five early-stage processing modes, can be sequentially summarized into site confirmation, spare part checking, scheme learning, tool preparation and energy source cutting for the preparation work in the early stage of construction, and are sequentially summarized as:
Personnel configuration: the ground of constructors is two, the main responsibilities of the constructors are used for commanding the travelling crane, tying and hanging the steel wire rope, carrying out safety supervision and the like, the underground operation is six (including one project construction responsible person), the main responsibilities of the constructors are used for replacing the device pushing and the speed reducer dismounting and the like;
Firstly, cleaning a track 10, and placing a support plate between a trolley 7 and a lifting platform 5;
step two, placing the replacing device on the track 10 and positioning;
Step three, lifting the lifting platform 5, disassembling the lower roller of the rolling mill and pressing an old speed reducer;
step four, dropping the lifting platform 5, opening the boot-shaped stop piece 1, transporting and lifting the old speed reducer, and lifting the new speed reducer on the lifting platform 5;
placing a replacing device with a new speed reducer on the track 10 and positioning;
Sixthly, lifting the lifting platform 5 and installing a new speed reducer;
And seventhly, dropping the lifting platform 5, opening the boot-shaped stop piece 1, and transporting backwards, hanging out the replacing device.
the method also comprises a subsequent processing mode, which can be summarized into spare parts and tools for transportation, site cleaning, signature and removal, energy source recovery, engineering acceptance and data filing for auxiliary work at the later stage of construction, and finally completes the single-base closed memorial archway under the guidance of seven replacing steps of replacing the basic frame in the replacing method by the replacing device shown in the figure 1, the figure 2 and the figure 3and replacing the upper rolling press speed reducer of the three-roller rolling mill.
In the present specification, the embodiments are described in a progressive manner, and the embodiments focus on the use of the replacing method and the corresponding replacing device, and similar parts in other embodiments may be referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.
Claims (6)
1. The utility model provides a rolling mill roll down presses change device of speed reducer, its characterized in that includes:
a trolley for providing support;
the four wheel sets are fixedly arranged at the four corners of the bottom of the trolley and are placed on the two tracks;
The lifting platform is positioned right above the trolley;
the guide mechanism is arranged between the lifting platform and the trolley and used for providing guidance;
The supporting cylinder is fixedly arranged at the central position of the top of the lifting platform, and four guide grooves are formed by outwards extending the cylinder wall and are matched with vertical ribs of a shell of an upper pressing speed reducer of a lower rolling mill; and
The jack is arranged at the bottom of the guide mechanism and used for lifting the lifting platform and realizing replacement of an upper rolling press speed reducer of the rolling mill;
The guide mechanism includes: the four guide sleeves are arranged at the four corners of the trolley body and vertically penetrate through the trolley body; the four guide rods are vertically arranged inside the four guide sleeves in a one-to-one correspondence mode and penetrate through the guide sleeves, and the upper end portions of the guide rods are assembled with the lifting platform in an interference fit mode and are positioned at four corners of the bottom of the lifting platform; the length of the guide rod is greater than the height of the trolley; the four jacks are respectively arranged at the bottoms of the four guide rods;
the guide rod penetrates through the table board of the trolley to reach the bottom of the trolley;
A bush is embedded in the guide sleeve, an oil drilling hole is formed in the top of the guide sleeve, and a radial and circumferential lubricating oil groove is formed in the inner wall of the bush and used for reducing the friction resistance with a guide rod performing lifting movement;
the stop pieces are placed between the track and the wheel sets and used for locking the wheel sets, and the two stop pieces are boot-shaped.
2. The apparatus for replacing a rolling press-on reducer of a rolling mill according to claim 1, wherein the carriage comprises:
The platform truck body and four landing legs.
3. The replacing device of rolling mill rolling press-on speed reducer according to claim 1, further comprising:
And the two supporting plates are cushioned between the trolley and the lifting platform so that the bottom end of the guide rod is higher than the ground.
4. The replacing device of rolling mill rolling press-on speed reducer according to claim 1, further comprising:
The stop piece is installed on the trolley through the iron chain.
5. the replacing device of rolling mill rolling press-on speed reducer as claimed in claim 1, wherein:
The wheel tread of the wheel set is provided with a rim structure, the tread of the wheel set is in stable contact with the upper plane of the track, and the rim structure falls on the inner sides of the two tracks.
6. A method for replacing a rolling mill lower roll upper reduction gear by using the replacing device as claimed in claim 3, comprising the steps of:
cleaning the track, and placing the supporting plate between the trolley and the lifting table;
Secondly, placing the replacing device on the track and positioning;
step three, lifting the lifting platform, and disassembling a lower roller of a rolling mill to press an old speed reducer;
step four, the lifting platform is dropped, the old speed reducer is hoisted out in a reverse transportation mode, and the new speed reducer is hoisted on the lifting platform;
Fifthly, placing the replacing device with a new speed reducer on the track and positioning;
Sixthly, lifting the lifting platform and installing a new speed reducer;
And seventhly, dropping the lifting platform, and transporting the lifting platform to lift out the replacing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611069972.1A CN106734222B (en) | 2016-11-28 | 2016-11-28 | Replacing device and replacing method for rolling mill lower roll upper speed reducer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611069972.1A CN106734222B (en) | 2016-11-28 | 2016-11-28 | Replacing device and replacing method for rolling mill lower roll upper speed reducer |
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| CN106734222A CN106734222A (en) | 2017-05-31 |
| CN106734222B true CN106734222B (en) | 2019-12-17 |
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| CN201611069972.1A Expired - Fee Related CN106734222B (en) | 2016-11-28 | 2016-11-28 | Replacing device and replacing method for rolling mill lower roll upper speed reducer |
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| CN107159715A (en) * | 2017-06-13 | 2017-09-15 | 中国十九冶集团有限公司 | Milling train Mobile base replacing options |
| CN110497184A (en) * | 2018-05-17 | 2019-11-26 | 中冶宝钢技术服务有限公司 | The replacement tooling and replacing options of planisher rolling line adjusting device |
| CN111196253A (en) * | 2020-02-28 | 2020-05-26 | 神华天津煤炭码头有限责任公司 | Maintenance method of mechanical walking device |
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| CN201030380Y (en) * | 2007-04-26 | 2008-03-05 | 梁士臣 | Special roller changing device for eight-roller sheet rolling mill |
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2016
- 2016-11-28 CN CN201611069972.1A patent/CN106734222B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2830355Y (en) * | 2005-10-28 | 2006-10-25 | 湖南华菱涟钢薄板有限公司 | Discharge bogie for roller bearing seat |
| CN2928282Y (en) * | 2006-07-25 | 2007-08-01 | 周小芳 | Roller changer for cold rolling mill |
| KR100861960B1 (en) * | 2007-05-14 | 2008-10-09 | 주식회사 성진이앤아이 | Exchanging system of stack liner of backup roll for finishing mill work |
| CN102029291A (en) * | 2010-11-16 | 2011-04-27 | 中冶京诚工程技术有限公司 | Bowed roll block fast replacing device for rolling mill |
| CN102921737A (en) * | 2012-11-26 | 2013-02-13 | 青岛润丰铝箔有限公司 | Disassembly and assembly equipment for bearing box of working roll of aluminum foil mill |
| CN206483814U (en) * | 2016-11-28 | 2017-09-12 | 莱芜钢铁集团有限公司 | Under rolling mill in roll-in reductor more changing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106734222A (en) | 2017-05-31 |
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