CN202729552U - Self-turning mechanical paw for lifting nuclear power welded rotor - Google Patents
Self-turning mechanical paw for lifting nuclear power welded rotor Download PDFInfo
- Publication number
- CN202729552U CN202729552U CN 201220333466 CN201220333466U CN202729552U CN 202729552 U CN202729552 U CN 202729552U CN 201220333466 CN201220333466 CN 201220333466 CN 201220333466 U CN201220333466 U CN 201220333466U CN 202729552 U CN202729552 U CN 202729552U
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- transmission mechanism
- turning rack
- ratchet
- turning
- nuclear power
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Abstract
The utility model relates to a self-turning mechanical paw for lifting a nuclear power welded rotor. No lifting mechanical paw with reasonable structure design and reliable performance is available at present. The mechanical paw is characterized by comprising an electric bolt mechanism, a turning mechanism, a lifting stand and a turning stand, wherein the electric bolt mechanism comprises a screw rod lifter and a bolt that are fixed on the lifting stand; the turning mechanism comprises a lifter support, a lifter and a hinge; the turning mechanism comprises a reducer motor, pawls, a gear transmission mechanism, a screw rod transmission mechanism and a turning stand body; the upper part of the lifter is mounted on the lifter support; the bottom of the lifter is articulated with the turning stand body; both sides of the turning stand body are articulated with the lifting stand; the reducer motor, the pawls, the gear transmission mechanism and the screw rod transmission mechanism are mounted on the turning stand body; the gear transmission mechanism is connected with the reducer motor; the screw rod transmission mechanism is connected with the gear transmission mechanism; and the pawls are connected with the screw rod transmission mechanism. The mechanical paw is reasonable in structure design and can clamp conveniently.
Description
Technical field
The utility model relates to a kind of lifting machinery paw, but especially relates to a kind of nuclear power welded disc turbine rotor lifting machinery paw that self overturns, and is mainly used in hoisting high-temperature, major diameter, heavy weight nuclear power welded disc turbine rotor, and realizes the function that self overturns.
Background technology
Nuclear power rotor is as the core component in the nuclear power generator group, because of himself weight and volume very large, general employing import heavy forging machinework forms, but because the manufacturing technology of this forging is mainly by external grasp, so that domestic production is limited by external supply, and price is also abroad monopolized, in order to overcome all drawbacks that cause thus, therefore domestic independent research the rotor of segmentation welding forming substitute solid forging.
Although welded disc turbine rotor has the advantages such as flexible design, good rigidly, the requirement of its manufacturing technology is also high.After the rotor welding moulding, need all that generally its integral body is carried out postwelding and move back the stress processing.Tradition adopts steel rope by the driving lifting, but the deep-well furnace temperature after bakingout process is still higher, can't realize lifting by crane by steel rope the operation of rotor.This is for needs automatic capturing, carrying and can realize course of processing rotor workpiece turning function needs, and steel rope can not realize that at all this has brought many inconveniences just for rotor heat treatment, processing.
In sum, also do not have at present a kind of simple in structure, reasonable in design, dependable performance, gripping convenience, flexible operation, range of use be wide, can realize automatic turning between level and upright position nuclear power welded disc turbine rotor lifting machinery paw.
The utility model content
The purpose of this utility model is to overcome above shortcomings in the prior art, and provide a kind of reasonable in design, dependable performance, but gripping convenience, flexible operation, range of use are wide, the nuclear power welded disc turbine rotor lifting machinery paw that self overturns that can realize automatic turning between level and upright position.
The technical scheme in the invention for solving the above technical problem is: but the constructional feature of the nuclear power welded disc turbine rotor lifting machinery paw that should self overturn is: comprise electric inserting pin mechanism, switching mechanism, upending frame and turning rack, described electric inserting pin mechanism comprises screw lift and latch, described switching mechanism comprises elevator support, elevator and hinge, and described turning rack comprises reducing motor, ratchet, gear drive, lead screw transmission mechanism and turning rack body; Described screw lift and latch all are fixed on the upending frame; Described elevator support is fixed on the upending frame, and the top of described elevator is installed on the elevator support, and the bottom of this elevator is connected through the hinge on the turning rack body; The both sides of described turning rack body are hinged on the upending frame, described reducing motor, ratchet, gear drive and lead screw transmission mechanism are installed on the turning rack body, described gear drive is connected with reducing motor, described lead screw transmission mechanism is connected with gear drive, and described ratchet is connected with lead screw transmission mechanism.
As preferably, turning rack described in the utility model also comprises travel switch, and described travel switch is installed on the turning rack body, and described ratchet and travel switch match.
As preferably, turning rack described in the utility model also comprises rubber cushion blocks, and described rubber cushion blocks is fixed on the ratchet.
As preferably, ratchet described in the utility model is L shaped structure.
The utility model compared with prior art has the following advantages and effect: compact conformation, and installation and easy to adjust, grip roll workpiece scope is large; In addition, safe and reliable when guaranteeing the large weight welded disc turbine rotor of upset because lead screw transmission mechanism has auto-lock function, flexible operation; By the size of change lead screw transmission mechanism, can satisfy the crawl hoisting function of various different IPs electric welding rotors, enlarged applicable surface.
Of the present utility model simple in structure, reasonable in design, dependable performance, gripping is convenient, flexible operation, range of use is wide, can realize automatic turning between level attitude and upright position.
Description of drawings
But Fig. 1 is the main TV structure scheme drawing of nuclear power welded disc turbine rotor lifting machinery paw of self upset among the utility model embodiment.
Fig. 2 is the left TV structure scheme drawing of Fig. 1.
Fig. 3 is the right TV structure scheme drawing of Fig. 1.
Fig. 4 is the plan structure scheme drawing of Fig. 1.
Fig. 5 is the structural representation of looking up of Fig. 1.
Fig. 6 is the backsight structural representation of Fig. 1.
But Fig. 7 is the perspective view of nuclear power welded disc turbine rotor lifting machinery paw of self upset among the utility model embodiment.
Fig. 8 is the main TV structure scheme drawing of turning rack among the utility model embodiment.
Fig. 9 is the left TV structure scheme drawing of Fig. 8.
Figure 10 is the right TV structure scheme drawing of Fig. 8.
Figure 11 is the plan structure scheme drawing of Fig. 8.
Figure 12 is the structural representation of looking up of Fig. 8.
Figure 13 is the backsight structural representation of Fig. 8.
Figure 14 is the perspective view of turning rack among the utility model embodiment.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and by embodiment, and following examples are to explanation of the present utility model and the utility model is not limited to following examples.
Embodiment.
Referring to Fig. 1 to Figure 14, but the nuclear power welded disc turbine rotor lifting machinery paw that self overturns in the present embodiment comprises electric inserting pin mechanism a, switching mechanism b, upending frame c and turning rack d.
Electric inserting pin mechanism a in the present embodiment comprises screw lift 1 and latch 2, switching mechanism b comprises elevator support 3, elevator 4 and hinge 5, and turning rack d comprises reducing motor 6, ratchet 7, gear drive 8, lead screw transmission mechanism 9, rubber cushion blocks 10, travel switch 11 and turning rack body 12.
Screw lift 1 and latch 2 in the present embodiment all are fixed on the upending frame c.Elevator support 3 is fixed on the upending frame c, and the top of elevator 4 is installed on the elevator support 3, and the bottom of this elevator 4 is connected on the turning rack body 12 by hinge 5.
The both sides of the turning rack body 12 in the present embodiment are hinged on the upending frame c, reducing motor 6, ratchet 7, gear drive 8, lead screw transmission mechanism 9, rubber cushion blocks 10 and travel switch 11 are installed on the turning rack body 12, wherein, reducing motor 6 belongs to the equipment that power is provided, gear drive 8 belongs to driving device, with traveling nut, ratchet 7 is used for clamping the welded disc turbine rotor workpiece in the lead screw transmission mechanism 9, and this ratchet 7 is L shaped structure.Gear drive 8 in the present embodiment is connected with reducing motor 6, and lead screw transmission mechanism 9 is connected with gear drive 8, and ratchet 7 is connected with lead screw transmission mechanism 9, and ratchet 7 and travel switch 11 match, and rubber cushion blocks 10 is fixed on the ratchet 7.
Reducing motor 6 driven gear transmission devices 8 among the turning rack d of present embodiment are realized advancing with the function of moving back together thereby drive the ratchet 7 that is installed on the lead screw transmission mechanism 9, and then are reached the purpose that clamps simultaneously or unclamp the welded disc turbine rotor workpiece.Lead screw transmission mechanism 9 in the present embodiment adopts the mode that screw mandrel rotates and nut slides, realized rotatablely moving and be converted into straight-line function, and have preferably auto-lock function, guaranteed the safe and reliable operation of mechanical paw in upset large heavy workpiece process.
What the electric inserting pin mechanism a in the present embodiment was used for W type suspension hook that driving lifting nuclear power welded disc turbine rotor adopts plugs together connection automatically.Switching mechanism b in the present embodiment finishes the upset of turning rack d between spending to 90 in 0 degree by screw lift 1, and switching mechanism b is mainly used in the upset of auxiliary kernel electric welding rotor.Upending frame c in the present embodiment is used for connecting electric inserting pin mechanism a and turning rack c, and assists and realize that turning rack d spends to the upset between 90 degree 0, and the turning rack d in the present embodiment is mainly used in clamping and lifting by crane the welded disc turbine rotor workpiece.
Present embodiment is respectively installed one group of travel switch 11 at the place, round two ends of ratchet 7, according to the position of rotor flange end size capable of adjusting stroke switch 11, thereby adjusts the stroke spacing of ratchet 7, has therefore satisfied the welded disc turbine rotor function of ratchet 7 crawl different sizes.Before the ratchet 7 of present embodiment travel switch 11 is set, and if only if when grabbing workpiece, and ability feedback signal when all ratchets 7 all touch travel switch 11 guarantees that ratchet 7 clamps the welded disc turbine rotor workpiece simultaneously, thereby possesses safe and reliable performance.
The L-shaped structure of section of the ratchet 7 in the present embodiment, and clamp the support works face, it is the rubber cushion blocks 10 of support rotor end face of flange place friction force when being equipped with for increasing clamping work pieces, this rubber cushion blocks 10 is except clamping the different rotor according to the rotor flange height adjustment, also have buffer action, satisfied safe and reliable requirement when clamping large weight rotor.
But the principle of work of the nuclear power welded disc turbine rotor lifting machinery paw that self overturns in the present embodiment is as follows: the drive path of mechanical paw crawl lifting welded disc turbine rotor action is driving, W type suspension hook, screw lift 1, latch 2, reducing motor 6, gear drive 8, lead screw transmission mechanism 9 and ratchet 7 successively.
But the action of the nuclear power welded disc turbine rotor lifting machinery paw that self overturns in the present embodiment is mainly realized by following A, B, C and four steps of D, and is specific as follows.
A, driving are put into upending frame slowly with W type suspension hook, and when suspension hook stops to fall into upending frame, start electric inserting pin mechanism a, when electric inserting pin mechanism a be connected with W type suspension hook identical after, close the power supply of electric inserting pin mechanism a.
B, driving is with mechanical paw lifting and move on to nuclear power welded disc turbine rotor upper end, and start the reducing motor 6 among the turning rack d this moment, so that ratchet 7 slowly opens, and when ratchet 7 is opened to maximum position, closes the power supply of reducing motor 6.
The rotor flange end is slowly stretched into mechanical paw in C, driving, then starts reducing motor 6, so that ratchet 7 is drawn close to the center gradually, ratchet 7 contact rotor flange ends also continue to clamp, and when four signal lamps on the turning rack d are simultaneously bright, close reducing motor 6.
D, startup driving, upper machine drawing tool paw and the nuclear power welded disc turbine rotor of slinging.
But the nuclear power welded disc turbine rotor lifting machinery paw that self overturns in the present embodiment has the characteristics such as compact conformation, installation is easy to adjust, grip roll workpiece scope is large; In addition, because the lead screw transmission mechanism 9 that adopts has auto-lock function, guarantee the safe and reliable of the large weight welded disc turbine rotor process of upset, flexible operation; By the size of change lead screw transmission mechanism 9, can satisfy the crawl hoisting function of various different IPs electric welding rotors.
In addition, need to prove, the specific embodiment described in this specification sheets, the shape of its parts and components, institute's title of being named etc. can be different, and the above content described in this specification sheets only is to the explanation of the utility model structure example.Allly conceive equivalence variation or the simple change that described structure, feature and principle are done according to the utility model patent, be included in the protection domain of the utility model patent.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment; only otherwise depart from structure of the present utility model or surmount this scope as defined in the claims, all should belong to protection domain of the present utility model.
Claims (4)
- But one kind self the upset nuclear power welded disc turbine rotor lifting machinery paw, it is characterized in that: comprise electric inserting pin mechanism, switching mechanism, upending frame and turning rack, described electric inserting pin mechanism comprises screw lift and latch, described switching mechanism comprises elevator support, elevator and hinge, and described turning rack comprises reducing motor, ratchet, gear drive, lead screw transmission mechanism and turning rack body; Described screw lift and latch all are fixed on the upending frame; Described elevator support is fixed on the upending frame, and the top of described elevator is installed on the elevator support, and the bottom of this elevator is connected through the hinge on the turning rack body; The both sides of described turning rack body are hinged on the upending frame, described reducing motor, ratchet, gear drive and lead screw transmission mechanism are installed on the turning rack body, described gear drive is connected with reducing motor, described lead screw transmission mechanism is connected with gear drive, and described ratchet is connected with lead screw transmission mechanism.
- But according to claim 1 self the upset nuclear power welded disc turbine rotor lifting machinery paw, it is characterized in that: described turning rack also comprises travel switch, described travel switch is installed on the turning rack body, described ratchet and travel switch match.
- But according to claim 1 self the upset nuclear power welded disc turbine rotor lifting machinery paw, it is characterized in that: described turning rack also comprises rubber cushion blocks, described rubber cushion blocks is fixed on the ratchet.
- But according to claim 1 self the upset nuclear power welded disc turbine rotor lifting machinery paw, it is characterized in that: described ratchet is L shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220333466 CN202729552U (en) | 2012-07-11 | 2012-07-11 | Self-turning mechanical paw for lifting nuclear power welded rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220333466 CN202729552U (en) | 2012-07-11 | 2012-07-11 | Self-turning mechanical paw for lifting nuclear power welded rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202729552U true CN202729552U (en) | 2013-02-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220333466 Expired - Lifetime CN202729552U (en) | 2012-07-11 | 2012-07-11 | Self-turning mechanical paw for lifting nuclear power welded rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202729552U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112345561A (en) * | 2020-11-12 | 2021-02-09 | 东方电气集团东方汽轮机有限公司 | Effective flaw detection method for nuclear power welding rotor |
-
2012
- 2012-07-11 CN CN 201220333466 patent/CN202729552U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112345561A (en) * | 2020-11-12 | 2021-02-09 | 东方电气集团东方汽轮机有限公司 | Effective flaw detection method for nuclear power welding rotor |
| CN112345561B (en) * | 2020-11-12 | 2022-05-10 | 东方电气集团东方汽轮机有限公司 | Effective flaw detection method for nuclear power welding rotor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130213 |
|
| CX01 | Expiry of patent term |