CN209970634U - Special disassembly and assembly tool for disc spring of continuous casting crystallizer clamping device - Google Patents
Special disassembly and assembly tool for disc spring of continuous casting crystallizer clamping device Download PDFInfo
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- CN209970634U CN209970634U CN201920512676.7U CN201920512676U CN209970634U CN 209970634 U CN209970634 U CN 209970634U CN 201920512676 U CN201920512676 U CN 201920512676U CN 209970634 U CN209970634 U CN 209970634U
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Abstract
The utility model discloses a continuous casting crystallizer clamping device belleville spring's special dismouting frock, the first disc center of this frock is equipped with the installation through-hole, first and second disc outer lane is equipped with six through-holes, third disc outer lane is equipped with three through-hole, first disc, second disc and third disc are interval parallel arrangement in proper order, three screw rods penetrate the three through-hole of first disc and second disc outer lane and the three through-hole of third disc outer lane and three screw rod both ends and first disc and third disc fixed connection, three ejector pins penetrate other three through-hole and three ejector pin bottoms and second disc fixed connection of first disc and second disc outer lane, first disc is stretched out to the front end, the second disc moves between first disc and third disc along three screw rods, hydraulic jack locates between second disc and the third disc. The tool effectively improves the disassembly and assembly operation efficiency, reduces the maintenance cost, avoids the potential safety hazard in the operation process, and improves the maintenance quality of the continuous casting crystallizer.
Description
Technical Field
The utility model relates to a special dismouting frock of continuous casting crystallizer clamping device belleville spring.
Background
The 1450 continuous casting machine set adopts a two-machine four-flow production mode, at least 4 crystallizers are required to be replaced every month on average, so that 50 crystallizers are required to be overhauled every year to ensure the normal production of two-steel-making continuous casting slabs, and obviously, the overhauling workload is larger.
As shown in fig. 1, the crystallizer clamping device is composed of an M52 round nut 1, a long screw rod 2 and disk springs 3, four groups are provided, the disk springs 3 penetrate the long screw rod 2 and are clamped by bolts 4, a pressure plate 5 penetrates the long screw rod 2 and the bolts 4 are positioned on the end surface of the disk springs 3, the front end of the bolts 4 is screwed into a pretightening force adjusting nut 6, the M52 round nut 1 is screwed into one end of the long screw rod 2 and abuts against the pressure plate 5, and the other end of the long screw rod 2 is screwed into an M52 hexagon nut 7 to play a clamping role. During each maintenance operation, the disc spring needs to be taken out, the pretightening force is reset according to the technical standard, and then the disc spring is installed.
When the original disc spring is disassembled, firstly, an M52 hexagon nut is clamped by a box spanner, then the box spanner is beaten by a hammer, the M52 hexagon nut is loosened, the load of the disc spring is released, and meanwhile, in order to prevent the long filament rod from rotating along with the long filament rod, a pipe wrench is required to be adopted to clamp the long filament rod, so that the M52 hexagon nut is screwed out, and the disc spring is taken out. This dismantlement process needs the cooperation of three workers to accomplish, because reasons such as M52 hexagon nut corrosion, dismantlement process is hard at every turn and is wasted time to when the sledgehammer is beaten, there is serious potential safety hazard, cause personnel's injury easily. When the M52 hexagon nut is corroded seriously, the gas cutting can be used only to destroy the long screw rod, so that the purpose of taking out the disk spring is achieved, the maintenance cost is increased, and the disassembly operation efficiency is reduced.
The disc spring is assembled after being disassembled, overhauled and subjected to pretightening force adjustment, and an M52 hexagon nut is locked until the pretightening force of the disc spring is reached by beating a double offset ring spanner with a big hammer. Because the sledge hammer beats the in-process, belleville spring also can rotate along with the atress direction, causes the distortion card to die, when dismantling belleville spring like this, can take place the difficult condition of taking out of belleville spring to because the stress point is on belleville spring's long lead screw, but not on belleville spring, make belleville spring not reach anticipated pretension effect, influence the maintenance quality of continuous casting crystallizer.
Disclosure of Invention
The utility model aims to solve the technical problem that a special dismouting frock of continuous casting crystallizer clamping device belleville spring is provided, traditional belleville spring dismantles the defect of operation is overcome to this frock, effectively improves dismouting operating efficiency, reduces the cost of overhaul, stops the potential safety hazard of operation process, improves the maintenance quality of continuous casting crystallizer.
In order to solve the technical problem, the utility model discloses continuous casting crystallizer clamping device belleville spring's special dismouting frock includes first disc, second disc, third disc, hydraulic jack, three screw rods and three ejector pins, first disc center is equipped with the installation through-hole, first disc and second disc outer lane are equipped with six through-holes along circumferencial direction interval equidistance, third disc outer lane is equipped with three through-hole along circumferencial direction interval equidistance, first disc, second disc and third disc are the interval parallel arrangement in proper order, three screw rods penetrate respectively three through-hole of first disc and second disc outer lane and the three through-hole of third disc outer lane and three screw rod both ends respectively with first disc and third disc fixed connection, three ejector pins penetrate respectively the other three through-hole of first disc and second disc outer lane and three ejector pin bottoms and second disc fixed connection, The front end of the hydraulic jack extends out of the first circular disc, the second circular disc moves between the first circular disc and the third circular disc along the three screw rods, and the hydraulic jack is arranged between the second circular disc and the third circular disc.
Furthermore, two ends of the three screw rods are fastened on the first disc and the third disc respectively through nuts.
Furthermore, the bottom ends of the three top rods are fastened on the second disc by nuts respectively.
Furthermore, this dismouting frock still includes three cushion, three cushion are located respectively three ejector pin front end.
Because the special disassembly and assembly tool for the disc spring of the clamping device of the continuous casting crystallizer adopts the technical scheme, namely the center of the first disc of the tool is provided with the installation through hole, the outer rings of the first disc and the second disc are provided with six through holes at equal intervals along the circumferential direction, the outer ring of the third disc is provided with three through holes at equal intervals along the circumferential direction, the first disc, the second disc and the third disc are sequentially arranged in parallel at intervals, three screw rods respectively penetrate through the three through holes of the outer rings of the first disc and the second disc and the three through holes of the outer ring of the third disc, the two ends of each screw rod are respectively fixedly connected with the first disc and the third disc, the three ejector rods respectively penetrate through the other three through holes of the outer rings of the first disc and the second disc, the bottom ends of the three ejector rods are fixedly connected with the second disc, the front ends of the ejector rods extend out of the first disc, the second disc moves between the, the hydraulic jack is arranged between the second disc and the third disc. The defect of traditional belleville spring dismantlement operation is overcome to this frock, effectively improves dismouting operating efficiency, reduces the cost of overhaul, stops the potential safety hazard of operation process, improves the maintenance quality of continuous casting crystallizer.
Drawings
The invention will be described in further detail with reference to the following drawings and embodiments:
FIG. 1 is a schematic view of the structure of a clamping device of a crystallizer;
FIG. 2 is a schematic view of a special disassembling and assembling tool for a disc spring of the clamping device of the continuous casting crystallizer of the present invention;
FIG. 3 is a schematic view of a first disk and a second disk in the disassembling tool;
fig. 4 shows a third circle in the dismounting tool.
Detailed Description
Embodiment is as shown in fig. 2, 3 and 4, the utility model discloses continuous casting crystallizer clamping device belleville spring's special dismouting frock includes first disc 11, second disc 12, third disc 13, hydraulic jack 14, three screw rods 15 and three ejector pins 16, first disc 11 center is equipped with installation through-hole 17, first disc 11 and second disc 12 outer lane are equipped with six through-holes 21 along circumferencial direction interval equidistance, third disc 13 outer lane is equipped with three through-hole 22 along circumferencial direction interval equidistance, first disc 11, second disc 12 and third disc 13 interval parallel arrangement in proper order, three screw rods 15 penetrate respectively the three through-hole of first disc 11 and second disc 12 outer lane and the three through-hole of third disc 13 outer lane and three screw rod 15 both ends respectively with first disc 11 and third disc 13 fixed connection, three ejector pins 16 penetrate respectively the other three through-hole and the three ejector pin 16 of first disc 11 and second disc 12 and the outer lane of third disc and third disc 13 outer lane fixed connection, three ejector pin 16 penetrate respectively The bottom ends of the three ejector rods 16 are fixedly connected with the second circular disc 12, the front end of each ejector rod extends out of the first circular disc 11, the second circular disc 12 moves between the first circular disc 11 and the third circular disc 13 along the three screw rods 15, and the hydraulic jack 14 is arranged between the second circular disc 12 and the third circular disc 13.
Preferably, the three screws 15 are fastened at both ends to the first disk 11 and the third disk 13, respectively, using nuts 18.
Preferably, the bottom ends of the three top rods 16 are fastened to the second disc 12 by nuts 19, respectively.
Preferably, the disassembly and assembly tool further comprises three cushion blocks 20, and the three cushion blocks 20 are respectively arranged at the front ends of the three ejector rods 16. During the dismouting operation, the clamp plate of terminal surface before the belleville spring is supported to three cushion, increases lifting surface area, avoids the damage to the clamp plate.
When the tool is used for disassembling the disc spring, firstly, a protective cover of the disc spring is disassembled, then, an installation through hole in the center of a first disc is sleeved into a long lead screw and is fastened by nuts, so that the tool is installed on the long lead screw, a second disc moves forwards along three screw rods, the front ends of the three ejector rods abut against a pressing plate of the disc spring, a hydraulic jack is started to push the second disc, the three ejector rods are driven to push the pressing plate of the disc spring, the disc spring is compressed, a pretightening force adjusting nut at the front end of a bolt for clamping the disc spring is screwed, a gap is formed between the pressing plate and an M52 round nut, the hydraulic jack releases pressure, the tool is disassembled, the M52 round nut is screwed down from the long lead screw, and the disc spring can be disassembled together with a clamping bolt and the.
The disassembled disc spring is arranged in a long screw rod along with a clamping bolt and a pressing plate after the pretightening force is adjusted through maintenance, an M52 round nut is screwed on the long screw rod, then the tool is arranged on the long screw rod, a second disc moves forwards along the three screw rods, the front ends of the three ejector rods abut against the pressing plate of the disc spring, a hydraulic jack is started to push the second disc, the three ejector rods are driven to push the pressing plate of the disc spring, the disc spring is compressed and adjusted to the set pretightening force, the M52 round nut is screwed, the hydraulic jack releases pressure, the tool is disassembled, a protective cover of the disc spring is arranged, and the disc spring is installed.
In the dismounting tool, the first disc, the second disc and the third disc are made of steel plates with the thickness of 20mm, and three screws of M20 multiplied by 300 are selected to enable the first disc, the second disc and the third disc to form a whole; according to the pre-tightening setting standard of the disc spring, the upper pre-tightening force of the disc spring is 59KN, and the lower pre-tightening force of the disc spring is 75 KN; selecting three screws of A2-70 grade, and performing stress analysis and calculation on the three screws;
the effective diameter of the M20 screw was:
wherein, the diameter of the screw is the screw pitch, the screw pitch of the M20 screw is 2.5,
the pretightening force is as follows:
wherein, the yield strength is 700 percent, the yield strength of the screw with A2-70 grade is the section area of the screw;
according to the calculation, the pretightening force of the A2-70-grade M20 screw is 77.085KN, the total pretightening force is 231.255KN and is far larger than the maximum pretightening force of a disc spring, namely 75KN, so that the stress of the selected screw is in an allowable range, meets the requirement, and is safe and reliable.
The disassembly and assembly tool effectively improves the disassembly and assembly efficiency of the disk springs, and the disassembly and assembly of the four groups of disk springs need 3 people by 4 hours, and the total working hours are 12 hours; after the tool is used, the four groups of disc springs only need 1 person for 3 hours to disassemble and install, and the total working hours are 3 hours; can save 10 hours of working hours and greatly improve the working efficiency. The safety of disassembly and assembly operations is effectively improved, the M52 hexagon nut needs to be knocked during original disassembly, a sledge hammer is used during knocking, and personnel injury is easily caused; after the tool is used, a large hammer is not required to knock, and potential safety hazards are avoided. The maintenance cost is reduced, and when the M52 hexagonal nut is seriously corroded in the original disassembly mode, the long screw rod needs to be damaged by gas cutting, and the disc spring is taken out; the tool does not need to unscrew the M52 hexagon nut, so that the operation of damaging the long screw rod is not involved, and the damage of a workpiece is avoided. The overhauling and assembling quality is effectively improved, and in the original disassembling mode, because the disc spring also rotates along with the stress direction in the hammering process of a sledge hammer, the disc spring is twisted and clamped, the clamping device is failed, the crystallizer is damaged, and the production of a rolling line is influenced; the tool directly applies a pretightening force to the disc spring from the axial direction, and the pretightening force value can be effectively mastered through the hydraulic pressure gauge of the hydraulic jack, so that the optimal pretightening effect is achieved, and the assembling quality of each part is ensured.
Claims (4)
1. The utility model provides a special dismouting frock of continuous casting crystallizer clamping device belleville spring which characterized in that: the disassembly and assembly tool comprises a first disc, a second disc, a third disc, a hydraulic jack, three screws and three ejector rods, wherein an installation through hole is formed in the center of the first disc, six through holes are formed in the outer rings of the first disc and the second disc at intervals along the circumferential direction, three through holes are formed in the outer rings of the third disc at intervals along the circumferential direction, the first disc, the second disc and the third disc are sequentially arranged in parallel at intervals, the three screws penetrate the three through holes in the outer rings of the first disc and the second disc and the three through holes in the outer ring of the third disc respectively, two ends of each screw are fixedly connected with the first disc and the third disc respectively, the three ejector rods penetrate the other three through holes in the outer rings of the first disc and the second disc respectively, the bottom ends of the three ejector rods are fixedly connected with the second disc, the front end of each ejector rod extends out of the first disc, the second disc moves between the first disc and the third disc along the three screws, the hydraulic jack is arranged between the second disc and the third disc.
2. The special disassembling and assembling tool for the disc spring of the continuous casting crystallizer clamping device according to claim 1, which is characterized in that: two ends of the three screw rods are fastened on the first disc and the third disc respectively by nuts.
3. The special disassembling and assembling tool for the disc spring of the continuous casting crystallizer clamping device according to claim 1, which is characterized in that: the bottom ends of the three top rods are fastened on the second disc by nuts respectively.
4. The special disassembling and assembling tool for the disc spring of the continuous casting crystallizer clamping device according to claim 1, which is characterized in that: the disassembly and assembly tool further comprises three cushion blocks, and the three cushion blocks are respectively arranged at the front ends of the three ejector rods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920512676.7U CN209970634U (en) | 2019-04-16 | 2019-04-16 | Special disassembly and assembly tool for disc spring of continuous casting crystallizer clamping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920512676.7U CN209970634U (en) | 2019-04-16 | 2019-04-16 | Special disassembly and assembly tool for disc spring of continuous casting crystallizer clamping device |
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| CN209970634U true CN209970634U (en) | 2020-01-21 |
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| CN201920512676.7U Active CN209970634U (en) | 2019-04-16 | 2019-04-16 | Special disassembly and assembly tool for disc spring of continuous casting crystallizer clamping device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111390813A (en) * | 2020-04-26 | 2020-07-10 | 神华包神铁路集团有限责任公司 | Electric control contactor dismounting tool |
| CN111634812A (en) * | 2020-05-22 | 2020-09-08 | 中国核工业华兴建设有限公司 | Rope tension adjusting device |
| CN112676834A (en) * | 2020-12-31 | 2021-04-20 | 成都中车四方轨道车辆有限公司 | Assembly process of brake unit laminated spring plate for rail transit |
-
2019
- 2019-04-16 CN CN201920512676.7U patent/CN209970634U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111390813A (en) * | 2020-04-26 | 2020-07-10 | 神华包神铁路集团有限责任公司 | Electric control contactor dismounting tool |
| CN111390813B (en) * | 2020-04-26 | 2021-07-06 | 神华包神铁路集团有限责任公司 | Electric control contactor dismounting tool |
| CN111634812A (en) * | 2020-05-22 | 2020-09-08 | 中国核工业华兴建设有限公司 | Rope tension adjusting device |
| CN112676834A (en) * | 2020-12-31 | 2021-04-20 | 成都中车四方轨道车辆有限公司 | Assembly process of brake unit laminated spring plate for rail transit |
| CN112676834B (en) * | 2020-12-31 | 2022-12-30 | 成都中车四方轨道车辆有限公司 | Assembly process of brake unit laminated spring plate for rail transit |
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Address after: 3520 Tongji Road, Baoshan District, Shanghai 201900 Patentee after: Baowu equipment Intelligent Technology Co.,Ltd. Address before: 201900, 335, Pu Pu Road, Shanghai, Baoshan District Patentee before: SHANGHAI BAOSTEEL INDUSTRY TECHNOLOGICAL SERVICE Co.,Ltd. |