CN102031386B - Lifting platform and transmission device - Google Patents
Lifting platform and transmission device Download PDFInfo
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- CN102031386B CN102031386B CN 200910057972 CN200910057972A CN102031386B CN 102031386 B CN102031386 B CN 102031386B CN 200910057972 CN200910057972 CN 200910057972 CN 200910057972 A CN200910057972 A CN 200910057972A CN 102031386 B CN102031386 B CN 102031386B
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- lifting table
- gear
- screw mandrel
- speed
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Abstract
The invention discloses a lifting platform and a transmission device. The lifting platform comprises a lifting platform body, wherein the lifting platform body is connected with a stand column by a sliding bearing; a spherical bearing is fixed on the lifting platform body and is connected with vertical screw rods; the upper end of each screw rod is connected with a curved beam in the middle of the stand column, and the lower end of each screw rod is connected with a cone gearbox; threads are formed on the surfaces of the screw rods and are meshed with threads of the spherical bearing; when rotating, the screw rods provide ascending or descending power for the lifting platform through the spherical bearing; a power source is arranged at the bottom of the lifting platform and is connected with a middle distribution gearbox by a horizontal input gear shaft; the middle distribution gearbox is connected with the cone gearbox by a horizontal output gear shaft; the cone gearbox converts rotating power transferred by horizontal shafts into the rotating power of the vertical screw rods; and the rotating directions of the screw rods on both sides of the platform are opposite. The invention can ensure that the lifting platforms of large-scale electroslag remelting furnaces run stably in the process of ascending and descending.
Description
Technical field
The present invention relates to a kind of large-scale electroslag refining furnace equipment, be specifically related to a kind of lifting table for large-scale electroslag refining furnace and driving device.
Background technology
450 tons of three-phase three rocking arm bipolar series electroslag remelting stoves are autonomous Design, particular electrical slag melting equipments of making voluntarily again on the basis of 200 tons of three-phases, three rocking arm bipolar series electroslag remelting stoves.The crystallizer of 450 tons of three-phase three rocking arm bipolar series electroslag remelting stoves configuration different sizes, use the electroslag metallurgy technology grasped, complete series, the inner materials by 200 tons to 450 tonnes that can produce maximum gauge and be 3600mm, maximum height and be 6000mm, maximum weight and be 450 tons is pure, dense structure, low hydrogen, low aluminium, super-low sulfur and the uniform high quality ESR ingot of chemical constitution.Mainly for the production of million kilowatt nuclear power engine block in-pile component with the corrosion-resistant steel heavy forging and second, third in generation the million kilowatt nuclear power engine block nuclear power heavy forging such as steam turbine low-pressure rotor, dynamotor rotor, evaporator pipe sheet and ultra-large type forging such as large-scale anvil roll.
Because the electroslag remelting steel ingot on 450 tons of electroslag refining furnaces, three weight such as joint crystallizer, bell, the electric flat carriage that has water cooled bottom plate and lifting table are very huge, need a kind of lifting table that can guarantee the steady lifting operation of above load-carrying of design.
Summary of the invention
Technical matters to be solved by this invention provides a kind of lifting table, and it can guarantee lifting table held stationary operation in the ascending, descending process of large-scale electroslag refining furnace.
In order to solve above technical matters, the invention provides a kind of lifting table; Comprise: the lifting table body; The lifting table body is connected with column by plain bearing, and column provides guiding for the lifting table body; Spherical bearing block is fixedly arranged on the lifting table body, and the globe bearing endoporus on the spherical bearing block has screw thread, and it links to each other with vertical screw mandrel; The screw mandrel upper end links together with the middle curved beam of column, and the lower end is connected with the conical gear case, and there is the screw-threaded engagement of screw thread and globe bearing on the screw mandrel surface, when screw mandrel rotates, provides the power that rises or descend for lifting table by globe bearing; The lifting table bottom is provided with propulsion source, propulsion source is connected with the distributed amongst gear case by level input gear wheel shaft, the distributed amongst gear case is connected with the conical gear case by the horizontal output gear wheel shaft, the conical gear case is connected with the lower end of vertical screw mandrel, intermeshing a pair of cone gear is arranged in the conical gear case, the rotary power that horizontal shaft is transmitted changes the rotary power of down-feed screw into, and the screw mandrel hand of rotation of platform both sides is opposite.
Beneficial effect of the present invention is: can guarantee lifting table held stationary operation in the ascending, descending process, guarantee that simultaneously 450 tons of electroslag remelting steel ingots, the three caused axial force vertical conduction of weight such as joint crystallizer, bell, the electric flat carriage that has water cooled bottom plate and lifting table are to the basis seat.
The present invention also provides the driving device of aforementioned lifting table; Described screw mandrel is four, arranges in the bilateral symmetry of column horizontal center line; Described speed electric motor with speed is two groups that are oppositely arranged, and each uses a level input gear wheel shaft that power is sent to a distributed amongst gear case; Described distributed amongst gear case comprises the gear of two groups of double reductions, power is sent to the middle part of two horizontal output gear wheel shafts, the two ends of two horizontal output gear wheel shafts are connected with four conical gear casees respectively, and four conical gear casees make that the two cocainine bar hand of rotation of arranging in the bilateral symmetry of column horizontal center line are opposite.
Description of drawings
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
The scheme drawing of the described lifting table of Fig. 1 specific embodiment of the invention;
Fig. 2 is column of the present invention and screw mandrel part schematic top plan view;
Fig. 3 is the driving device part scheme drawing of lifting table of the present invention;
Fig. 4 is speed electric motor with speed module section schematic top plan view of the present invention;
Fig. 5 is quick module section scheme drawing;
Fig. 6 is slow-side module part scheme drawing.
The specific embodiment
As shown in Figure 1, lifting table of the present invention mainly is equipped with the globe bearing 32 that is meshed with screw mandrel 28 and four spherical bearing blocks 31 that join together with platform 21, three plain bearings 13 that match with hypomere column 7, three column bases 5 and is installed in 21 last four compositions such as rail 9 of platform body by a lifting table body 21, four Acme thread screw mandrels 28 and 33, four of sleeve pipes thereof.
The framed structure that lifting table body 21 mainly is welded by steel plate.Table top and base plate respectively are block plates, and there are two concentric hole heart position therein, the both sides chamfering of an end, and the periphery between table top and base plate is welded into one with it with steel plate, therein the heart hole site cylinder that is welded into roll of steel plate of burn-oning.Between table top, base plate and cylinder, be welded into the brace panel of " well " font with steel plate.
As shown in Figure 2, respectively having two elevating screws 28 to make symmetry in the both sides of three column 7 horizontal center lines arranges.The screw mandrel 28 that is positioned at lifting table body 21 tops is being covered by flexible screw mandrel sleeve pipe 33 entirely.Curved beam 8 links together in the middle of screw mandrel sleeve pipe 33 upper ends and the column, and the lower end is connected with lifting table body 21, thereby has further strengthened elevating screw 28 safety during operation.Four elevating screw 28 lower ends are meshed with four globe bearings 32 respectively, to guarantee the normal operation of lifting table body 21 under maximum load.
Four globe bearings 32 join together with lifting table body 21 by spherical bearing block 31 separately, and endoporus adopts Acme thread.Four elevating screws 28 that are meshed with globe bearing 32 are all Acme thread.
The plain bearing of being made up of two upper and lower plain bearings 13 joins together by plain bearing housing 15 and lifting table body 21 respectively, and each matches with three hypomere columns 7, plays the orienting sleeve effect in lifting table body 21 lifting process.
Be covered with four rail 9 on lifting table body 21 table tops.Carrying deadweight, 450t electroslag remelting steel ingot and crystallizer, bell and the relevant cooling piece of the electric flat carriage that has water cooled bottom plate, the weight of cooling water expansion tank.
Three column bases 5 match with hypomere column 7, and it respectively has fitting surface up and down, on two anchor rings on three three column bases, 5 cylindricals, respectively have several uniform tight bolt with column 7 on request tightening in three column bases 5.
Meanwhile, the line of centers of three three column bases 5 is positioned on the circumference, these three centers respectively and the angle between the on line of the center of circle be 120 degree, the center spacing each other of three three column bases 5 equates.By adjusting squareness that backing plate 16 guarantees the line of centers of three three column bases 5 and basic plane in claimed range, by holding-down bolt it is anchored on the basis then.
The equipment of lifting table driving device is formed:
As shown in Figure 4, because technology is except having lifting table the requirement of load carrying ability, in addition lifting table is had soon, the requirement of lifting at a slow speed, so the lifting table driving device mainly is made up of following equipment: two phase asynchronous alternating-current motor/AC motors 101 (being used for fast lifting), two drgs 102, two ac variable frequency speed regulation electrical motors 115 (being used for lifting at a slow speed), two coupler 117 that have brake wheel, drg 116, two cycloidal planetary gear speed reducers 118, two gears case 167 at a slow speed soon, coupler 119, input transmission long axis 113, a distributed amongst gear case 123, center tooth case base 124, two left-handed, two dextrorotation circle tapered gearboxs 1, two round tapered gearbox combination bases 125 etc.
As shown in Figure 5, the fast lifting of lifting table 21 is by a band brake wheel elastic dowel pin shaft coupling 103 (being furnished with drg 102) by a phase asynchronous alternating-current motor/AC motor 101, drive spiral that first pair of straight gear 152 and dual gear 131 have differential gear train by quick input shaft 150 and bore tooth 137 transmissions (reduction ratio=X), through input transmission long axis 113, two drum-shaped tooth type shaft couplings connect respectively and are positioned at the distributed amongst gear case 123 that centre bit is equipped with two shafts, pass through two groups of double reductions of this gear case 123 simultaneously, drive two two shafts respectively, by four output transmission long axis 114, eight drum-shaped tooth type shaft couplings drive simultaneously respectively two left-handed, two dextrorotation conical gear casees 1 are realized.Its fast lifting speed is 141.88mm/min.
As shown in Figure 6, the lifting at a slow speed of lifting table is by an ac variable frequency speed regulation electrical motor 115, by a band brake wheel elastic dowel pin shaft coupling 117 (being furnished with electromagnetism block brake 116), a cycloidal planetary gear speed reducer 118, elastic dowel pin shaft coupling 119, drive second pair of straight gear 127 and dual gears 131 by input shaft at a slow speed 126, drive has the spiral awl tooth 137 transmissions (reduction ratio=X) of differential gear train, through input transmission long axis 113, two drum-shaped tooth type shaft couplings connect respectively and are positioned at the distributed amongst gear case 123 that centre bit is equipped with a dual input shaft, pass through two groups of double reductions of this gear case simultaneously, drive two dual output transmission long axis respectively, by four output transmission long axis 114, eight drum-shaped tooth type shaft couplings drive simultaneously respectively two left-handed, two dextrorotation conical gear casees 1 are realized.Its at a slow speed rising or falling speed be 0.526～5.26mm/min.Gear case needs two covers altogether at a slow speed soon.Distributed amongst gear case 123 needs a cover.Left and right rounding bevel gear housing 1 respectively needs two covers.Fast gear housing at a slow speed mainly is made of gear box cover and the deceleration box of steel plate welding.
Described speed electric motor with speed can adopt one also can adopt many, preferably adopt two speed electric motor with speed to connect distributed amongst gear case 123 by dual input gear transmission major axis in the present invention, and send power to two dual output major axis by distributed amongst tooth case, by four conical gear casees horizontal power is passed to four rhizoid thick sticks then.Under enlightenment of the present invention, can distribute above equipment according to number and the position of leading screw.
As shown in Figure 3, distributed amongst tooth case 123 mainly comprises case lid, block, a dual input gear transmission major axis 113, two gear wheel shafts and corresponding two gears, two dual output transmission long axis 114 and corresponding two gears and relevant antifriction-bearing box.The distributed amongst gear housing mainly is made of case lid and the block of steel plate welding.Distributed amongst tooth case 123 is two groups of double reductions, wherein the hand of spiral of dual input gear transmission major axis 113 is " right side ", before and after both sides each be meshed for the gear on " left side " with a hand of spiral that is installed in respectively on another gear wheel shaft, respectively rotate separately gear wheel shaft by a key, its hand of spiral is the gear wheel shaft on " right side ", each is meshed these two gear wheel shafts for the gear on " left side " with a hand of spiral that is installed in respectively on the dual output transmission long axis 114, respectively rotates separately dual output transmission long axis 114 by a key.A single-groove grooved ball-bearing casing (totally 6) is respectively arranged in the both sides of a dual input gear wheel shaft 113 and two gear wheel shafts, a single-groove grooved ball-bearing casing (totally 4) is respectively arranged in the both sides of two dual output transmission long axis 114, and other have some doors, stifle and saturating lid etc.
Cover and the support of left and right rounding finishing bevel gear cuter casing 1 are foundry goods.Two conical gears that are meshed all adopt circle-arc tooth.Left and right rounding bevel gear housing 1 is except the left and right rotation direction of a conical gear and a bevel gear shaft is different, and all the other structures, size are all identical.Left and right rounding bevel gear housing 1 is mainly by cover, support, axle and be installed in conical gear, antifriction-bearing box, the bevel gear shaft on the axle and be installed in antifriction-bearing box on the bevel gear shaft etc. and form.
Cover and support are nodular iron casting.Consider stress factor, in the support bottom boss is arranged, the perpendicular bisector of support between two circles has four to strengthen gusset, at bottom boss middle part two platforms arranged.Below a vertically arranged axle lower end and support, a self-aligning roller bearing is arranged, a self-aligning thrust roller bearing is arranged below this lower end and support, the conical gear that hand of spiral is " left side " directly seat on the interior plane of a loop of thrust baring, between the lower plane of plane on the conical gear and axle upper flange, one " cover " arranged, conical gear transmits moment of torsion by key, transmits axial force by axle upper flange, " cover ", conical gear and thrust baring.The plane contacts with " door " lower surface on flange, and a self-aligning roller bearing is arranged, and directly seat is on step surface for ring lower plane in it, and the plane is pushed down it with " gland " that has seal groove on its outer shroud.Its output axle head is connected with corresponding coupler 23.
What be meshed with above-mentioned conical gear is that a hand of spiral is " the bevel gear shaft right side " on " right side ".Right side at contiguous this bevel gear, a self-aligning roller bearing is arranged, at this right-hand member a single-row tapered roller bearing is arranged, its outer shroud is packed in " bearing carrier ring ", this circle tapered gearbox combination base 125 by two left sides (or right) rounding tapered gearbox 1 and one soon at a slow speed the gear case assembling shared.One end of this base is the framework that is welded with channel-section steel, is welded into a diesis shape framework in the inboard, two ends of its length direction, and section is inboard therein is welded into one with it with two channel-section steels.The other end of this base is with channel-section steel " ∏ " shape framing member that is welded, and this opening part welds mutually with a side of a last rectangular frame, constitutes a "T"-shaped framework, is welded into one with it with two grooves in the stage casing of small end in addition.The corresponding position on surface constitutes the base of differing heights with channel-section steel, steel plate thereon then, at the corresponding holding-down bolt of its lower surface place, constitutes at grade base anchor with steel plate.Circle tapered gearbox combination base directly is fixed on the basis by nut, packing ring and holding-down bolt.This driving device needs two round tapered gearbox combination bases altogether.
The design feature of lifting table of the present invention is that lifting table body 21 is box type construction spare.Be used for connecting the coupler 23 of screw mandrel 28 ends and conical gear case 1 output shaft, only transmit rotation and moment of torsion, do not bear axial force.
Use 450 tons of electroslag remelting steel ingots involved in the present invention, three joint crystallizers, bell, have the caused axial forces of weight such as the electric flat carriage of water cooled bottom plate and lifting table 21, pass to the screw mandrel 28 that is meshed with it by the globe bearing 32 of the Acme thread in the spherical bearing block 31, pass to the output shaft of conical gear case 1 by screw mandrel 28 lower surfaces, pass to cover by the lower plane that is positioned at this shaft middle bench, pass to conical gear by the lower surface of this cover again, pass to the spherical roller thrust baring by this conical gear lower surface then, this axial force passes through support at last, circle tapered gearbox combination base 125 passes to the basis.
Between the two sides of lifting table body 21 and end face and plain bearing housing 15 baseplanes, respectively be provided with one and adjust backing plate 16, after adjustment reaches requirement, assemble adjusting backing plate 16 according to different gap widths, make its corresponding column 7 line of centerss of each plain bearing housing 15 line of centers on a middle orthocenter line.
Between the spherical bearing block upper surface of lifting table body 21 both sides and block, respectively be provided with one and adjust cushion block 37, after adjustment reaches requirement, assemble adjusting cushion block 37 according to different gap widths, and respectively fixed with three screws, stressed even with each screw mandrel 28 to guarantee lifting table 21 keeping parallelism operation in the ascending, descending process.
When lifting table body 21 was in extreme lower position, directly seat was on four lifting table bearings 2 that link to each other with the basis.Lifting table 21 total work strokes are Xmm.When starting working, lifting table 21 rises Xmm as downward remaining stroke in advance, and then rising Xmm also has Xmm this moment as the remaining stroke that makes progress as forced stroke.
The design feature of lifting table driving device is, constitute new, a simple in structure combined speed reduction box at a slow speed soon owing to having adopted cycloidal planetary gear speed reducer 118 directly to drive pair of straight gears 127, not only alleviate the weight of equipment but also shortened the production cycle, also reduced cost, having improved quality, is not only good, not only fast but also economical.
The present invention is not limited to embodiment discussed above.More than the description of the specific embodiment is intended in order to describe and illustrate the technical scheme that the present invention relates to.Based on the apparent conversion of the present invention enlightenment or substitute and also should be considered to fall into protection scope of the present invention.The above specific embodiment is used for disclosing best implementation method of the present invention, so that those of ordinary skill in the art can use numerous embodiments of the present invention and multiple alternative reaches purpose of the present invention.
Claims (10)
1. lifting table; It is characterized in that, comprising:
The lifting table body;
The lifting table body is connected with column by plain bearing, and column provides guiding for the lifting table body;
Spherical bearing block is fixedly arranged on the lifting table body, and the globe bearing endoporus on the spherical bearing block has screw thread, and it links to each other with vertical screw mandrel;
The screw mandrel upper end links together with the middle curved beam of column, and the lower end is connected with the conical gear case, and there is the screw-threaded engagement of screw thread and globe bearing on the screw mandrel surface, when screw mandrel rotates, provides the power that rises or descend for lifting table by globe bearing;
The lifting table bottom is provided with propulsion source, propulsion source is connected with the distributed amongst gear case by level input gear wheel shaft, the distributed amongst gear case is connected with the conical gear case by the horizontal output gear wheel shaft, the conical gear case is connected with the lower end of vertical screw mandrel, intermeshing a pair of cone gear is arranged in the conical gear case, the rotary power that horizontal shaft is transmitted changes the rotary power of down-feed screw into, and the screw mandrel hand of rotation that the platform bilateral symmetry distributes is opposite.
2. lifting table as claimed in claim 1; It is characterized in that described column is three, the line of centers of three column bases is positioned on the circumference, described three column centers respectively and the angle between the on line of the center of circle be 120 the degree.
3. lifting table as claimed in claim 1; It is characterized in that described lifting table body is the rectangular box structure; The brace panel of " well " font is arranged at the bottom of lifting table body; There is the rail of carrying electric flat carriage on the surface of lifting table body; Two angles of the rectangular surfaces of lifting table body are chamfering.
4. lifting table as claimed in claim 1; It is characterized in that the screw thread on the described screw mandrel is Acme thread, the screw thread of Dui Ying globe bearing endoporus also is Acme thread with it.
5. lifting table as claimed in claim 1; It is characterized in that, the telescopic multilayer screw mandrel of described screw mandrel outer setting sleeve pipe, screw mandrel sleeve pipe upper end links together with the middle curved beam of column, and the lower end is connected with the lifting table body.
6. lifting table as claimed in claim 1; It is characterized in that, between the spherical bearing block upper surface of lifting table body both sides and block, respectively be provided with one and adjust cushion block, and each is fixed with screw.
7. lifting table as claimed in claim 1; It is characterized in that, be positioned at the lifting table body and be in its lowest position, be provided with four lifting table bearings that link to each other with the basis seat.
8. lifting table as claimed in claim 1; It is characterized in that described propulsion source is the speed electric motor with speed, for lifting table provides speed two kinds of rising or falling speeds;
Described speed electric motor with speed comprises that a phase asynchronous alternating-current motor/AC motor that is used for fast lifting and one are used for the ac variable frequency speed regulation electrical motor of lifting at a slow speed;
Described phase asynchronous alternating-current motor/AC motor connects a band brake wheel elastic dowel pin shaft coupling of being furnished with drg and drives first pair of straight gear and a spiral awl tooth transmission that has differential gear train, by described level input gear wheel shaft output rotational power;
The ac variable frequency speed regulation electrical motor connects a cycloidal planetary gear speed reducer by a band brake wheel elastic dowel pin shaft coupling, cycloidal planetary gear speed reducer connects elastic dowel pin shaft coupling and drives second pair of straight gear and a spiral awl tooth transmission that has differential gear train, by described level input gear wheel shaft output rotational power.
9. lifting table as claimed in claim 8; It is characterized in that described screw mandrel is four, arrange in the bilateral symmetry of three root post horizontal center lines; Described speed electric motor with speed is two groups that are oppositely arranged, and each uses a level input gear wheel shaft that power is sent to a distributed amongst gear case; Described distributed amongst gear case comprises the gear of two groups of double reductions, power is sent to the middle part of two horizontal output gear wheel shafts, the two ends of two horizontal output gear wheel shafts are connected with four conical gear casees respectively, and four conical gear casees make that the two cocainine bar hand of rotation of arranging in the bilateral symmetry of column horizontal center line are opposite.
10. lifting table as claimed in claim 9 is characterized in that, the conical gear in the described conical gear case is the arc tooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910057972 CN102031386B (en) | 2009-09-29 | 2009-09-29 | Lifting platform and transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910057972 CN102031386B (en) | 2009-09-29 | 2009-09-29 | Lifting platform and transmission device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102031386A CN102031386A (en) | 2011-04-27 |
| CN102031386B true CN102031386B (en) | 2013-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910057972 Active CN102031386B (en) | 2009-09-29 | 2009-09-29 | Lifting platform and transmission device |
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| CN (1) | CN102031386B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105220888A (en) * | 2015-09-11 | 2016-01-06 | 方倩 | A kind of water-cooling and the construction work lifting appliance of adjustable speed |
| CN110962347B (en) * | 2018-09-30 | 2023-11-03 | 陕西前进齿科新技术开发有限公司 | Adjustable operation platform for tooth 3D printer convenient for heat dissipation |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201033721Y (en) * | 2007-04-16 | 2008-03-12 | 上海理工大学 | Four-guide-pillar auto-lift bench mechanism for medical appliance |
| CN201122048Y (en) * | 2007-09-07 | 2008-09-24 | 上海中加电炉有限公司 | Large vacuum hotpressing stove |
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2009
- 2009-09-29 CN CN 200910057972 patent/CN102031386B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201033721Y (en) * | 2007-04-16 | 2008-03-12 | 上海理工大学 | Four-guide-pillar auto-lift bench mechanism for medical appliance |
| CN201122048Y (en) * | 2007-09-07 | 2008-09-24 | 上海中加电炉有限公司 | Large vacuum hotpressing stove |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平7-245334A 1995.09.19 |
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| CN102031386A (en) | 2011-04-27 |
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Effective date of registration: 20161208 Address after: 200245 Jiangchuan Road, Shanghai, No. 230, building 1800, No. Patentee after: Shanghai electric heavy milling special equipment Co. Ltd. Patentee after: Shanghai Heavy Machines Plant Co., Ltd. Address before: 200245 Jiangchuan Road, Shanghai, No. 1800, No. Patentee before: Shanghai Heavy Machines Plant Co., Ltd. |