A kind of electric machine stand
A kind of electric machine stand is the utility model is related to, particularly a kind of large-scale dc motor engine base, belong to electric machine skill
Large-sized DC motor, because of its smooth speed adjusting performance, excellent overload capacity and adapts to frequent rotating etc.
Characteristic, is widely used in the fields such as metallurgical mine, steel mill's steel rolling.
For medium-sized dc motor, overall diameter is larger, and traditional mode is to weld former, gusset to form engine base cage
Body, reprocesses inner circle, then lamination, the engine base cage body poor rigidity of this method manufacture, easily in welding, processing, hoisting process
In deform so as to influence product subsequently assembling and product reliability.Therefore consider in a manner of punching to fold center plate into machine
After seat iron core is so as to avoid the manufacturing process of engine base cage body weldment, former from being pressed into one with iron core dress, rigidity increase.Engine base knot
Structure in direct current generator in addition to supporting stator, the part also as magnetic circuit, therefore center plate is folded can be led into engine base iron core
The increase of engine base Eddy Current Loss In Core of An Electromagnetic is caused, but since DC generator alternative frequency is low and the more whole engine base core length of center plate is smaller,
So while eddy-current loss increase caused by center plate folds iron core is negligible.
The content of the invention
The goal of the invention of the utility model is：For above-mentioned problem, there is provided a kind of assembling structure is simple, meets
Stand stiffness requirement, easy to operation and assembling, suitable for the electric machine stand of large-scale dc motor.
The technical solution adopted in the utility model is as follows：
A kind of electric machine stand, including at least 2 pieces of formers and polylith are assemblied in the engine base punching between former, the engine base punching
Former and engine base punching are fastened molding assembly by stack-press assembly between former, and by tensioning mechanism.Simplified using the structure
The assembly method of large-size machine engine base, in addition, having evaded the welding manner in traditional handicraft.
A kind of electric machine stand of the utility model, the former include preceding former, center plate and rear former, between the former
It is placed equidistant with.
A kind of electric machine stand of the utility model, further include more be arranged at before preceding gusset between former and center plate with
And the more rear gussets being arranged between center plate and rear former, the assembling of former and punching is made more by preceding gusset and rear gusset
Step up solid.The rigid requirements of electric machine stand are fully ensured that using the cooperation of reinforcing rib, it is ensured that engine base punching laminates fastening fastness.
Further, the preceding gusset and rear gusset are distributed for circumference array, and preceding gusset and rear gusset are by being welded and fixed
It is connected between former, and preceding gusset is identical with position that rear gusset is distributed on corresponding former.Which is connected firmly, and carries
For sufficient fastness and rigidity, it is ensured that the stress equalization of engine base punching.
A kind of electric machine stand of the utility model, the tensioning mechanism include multiple stretching screws and be opened in former and
Through hole on engine base punching correspondence position, which runs through former and engine base punching, and is coordinated tightly by screw thread and nut
Gu tense.Using this design method in order to preferably solve the assembly problem of engine base, the mode of assembling is easily understood, efficiency of assembling
A kind of electric machine stand of the utility model, the stretching screw are double threaded screw, and nut includes front nut and rear spiral shell
Mother, the both ends that stretching screw is assemblied in by front nut and back nut fasten assembling to realize, and wherein the one of the stretching screw
It is thick thread to hold as thin thread, the other end, to realize the effect assembled and adjust tightening force.The design method is easy to retract, and
And the tension effect between adjustment engine base punching and former.
A kind of electric machine stand of the utility model, is additionally provided with tool locating hole used for positioning, engine base on the former
Corresponding location hole, tool locating hole and location hole are provided with punching assembling positioning is realized by positioning linkage rod/screw rod.Due to
Component it is larger, it is necessary to auxiliary tool realize precise positioning assemble, using which assemble good position after, remove connecting rod or spiral shell
Bar, reassembles stretching screw so as to assemble in order.
Further, the location hole is located at engine base punching outside or inner side, and it is corresponding that tool locating hole is opened in former
Further, the engine base punching, which is integrated, is made or splitted structure.
A kind of direct current generator, including above-mentioned electric machine stand.
A kind of assembling principle of electric machine stand of the utility model is as follows：Former and engine base punching are shaped, and
Former is with processing corresponding pilot hole and tool locating hole in engine base punching.After machining, fixed using positioning linkage rod/screw rod
On the tool locating hole of end former, with positioning linkage rod/screw rod carry out positioning by the location hole in engine base punching and laminate to put
Put assembling, after the accurate positioning of position, penetrate fastening screw, realize that fastening tenses using nut, after the completion of, welded between former
Reinforcing rib plate body further improves the rigid of electric machine stand.
In conclusion by adopting the above-described technical solution, the beneficial effects of the utility model are：The utility model solves
The problem of current large-scale dc motor engine base assembly relation is complicated, and rigid is insufficient, by the way of engine base punching laminates
Optimize assembly method, simplify assembly manipulation process, make stand structure simple by former and reinforcing rib plate body, rigid meets
It is required that meanwhile, using the design of assembling positioning, the assembly precision of electric machine stand has been effectively ensured.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model normal section；
Fig. 2 is the structure diagram of the utility model side section；
Fig. 3 is the structure diagram of the utility model former；
Fig. 4 is the structure diagram of the utility model engine base punching；
Fig. 5 is another embodiment in tool locating hole on the utility model former；
Fig. 6 is another embodiment of the utility model engine base punching upper Positioning holes；
Fig. 7 is the structure diagram of the utility model the utility model engine base punching splitted structure.
Marked in figure：Gusset, 6- stretching screws, 7- after gusset, 4- center plates, 5- before former, the punching of 2- engine bases, 3- before 1-
Former, 8- back nuts, 9- front nuts, 10- tool locatings hole, 11- location holes afterwards.
Below in conjunction with the accompanying drawings, the utility model is described in detail.
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, is further elaborated the utility model.It should be appreciated that specific embodiment described herein is only explaining
The utility model, is not used to limit the utility model.
A kind of electric machine stand, as depicted in figs. 1 and 2, including at least 2 pieces of formers and polylith are assemblied in the engine base between former
Former and engine base punching fastening are assembled into by punching 2,2 stack-press assembly of engine base punching between former, and by tensioning mechanism
In the present embodiment, the mode laminated using former and engine base punching realizes the assembling of electric machine stand, in large-sized DC
In electric machine stand assembling, the structure of all parts is big, and assembly difficulty is high, uses split blade type laminated structure to exist to solve direct current generator
Difficulty in assembling process, assembling effect is can effectively ensure that using the structure design mode.
In design principle based on above-mentioned embodiment, in order to ensure the integrally-built stability of engine base, another
In embodiment, former includes preceding former 1, center plate 4 and rear former 7, is placed equidistant between the former.Using three pieces of width
Plate is so that engine base punching stressed effect is more preferable.
In design principle based on above-mentioned embodiment, in order to preferably ensure the stability of engine base, engine base is improved
Rigid, in a wherein embodiment, the device further include more be arranged at before between former and center plate
Preceding gusset 3 and the more rear gussets 5 being arranged between center plate and rear former, by preceding gusset 3 and rear gusset 5 make former with
The assembling of punching more fastens.Which can ensure the pulling force of engine base, alleviate the stressing conditions of tensioning mechanism, avoid large-scale straight
Galvanic electricity machine occurs tightening force deficiency in practical process and influences the use of engine base.
In design principle based on above-mentioned embodiment, in order to ensure the effect of reinforcing rib plate body, in another tool
In body embodiment, preceding gusset 3 and rear gusset 5 are distributed for circumference array, and preceding gusset 3 and rear gusset 5 are fixedly connected by welding
Between former, and preceding gusset 3 is identical with position that rear gusset 5 is distributed on corresponding former.Which ensures stiffener plate
Body is distributed former tension uniform.Specifically, the preceding gusset is formed with rear gusset using the plate body of similar rod material shape.And utilize
Welding manner is to realize more firm connection.
Specific to the design of tensioning mechanism, in the design principle based on above-mentioned embodiment, in another specific implementation
In mode, tensioning mechanism includes multiple stretching screws 6 and the through hole being opened on former and engine base punching correspondence position, the drawing
Tight screw rod 6 runs through former and engine base punching, and coordinates fastening to tense by screw thread and nut.Which can effectively adjust engine base
Specific to the design of above-mentioned stretching screw 6, in practical applications, one of embodiments thereof, 6 one end of stretching screw
It is fixed with for spacing nut, is provided with external screw thread on the other end, nut is set on the external screw thread, it is tight to realize by nut
Gu.And based on the basis of the design, in order to improve assembling effect, and assembling structure assembling/convenient disassembly of engine base is improved,
In another embodiment, stretching screw 6 is double threaded screw, and nut includes front nut 9 and back nut 8, passes through front nut
The both ends that stretching screw is assemblied in back nut fasten assembling to realize, wherein one end of the stretching screw 6 is thin thread, separately
One end is thick thread, to realize the effect assembled and adjust tightening force.More specifically, which is circumference array point
In design principle based on above-mentioned embodiment, specific to the design of tensioning mechanism, as shown in Figures 2 to 4,
The assembling through hole for assembling is offered on former and the corresponding position of engine base punching, stretching screw 6 runs through assembling through hole simultaneously
Fastened by nut.
In the assembling process of large-scale dc motor engine base, the consideration in support component structure, in order to improve assembling essence
Degree, ensures that application effect more preferably, is additionally provided with used for positioning engine base in another embodiment, on former after mounting
Tool locating hole 10, corresponding location hole 11, tool locating hole 10 and location hole 11 are provided with engine base punching 2 and passes through the company of positioning
Bar/screw rod realizes assembling positioning.
For effect based on positioning, the location of tool locating hole 10 and location hole 11 simultaneously have no special requirements, and
In the present embodiment, in order to improve positioning accuracy, positioning difficulty is reduced, in a wherein embodiment, such as Fig. 3 to Fig. 6 institutes
Show, location hole 11 is located on the outside of engine base punching or inner side, tool locating hole 10 are opened in the corresponding position of former.That is, exist
In actual design, location hole 11 is semicircular arc, and positioned at the engine base punching plate where engine base punching inner circle or cylindrical circumference
On body.The quantity in the location hole 11 and tool locating hole 10 is 2-16.And in the present embodiment, using 4.In addition, this is fixed
Position hole 11 and tool locating sky 10 are distributed for circumference array.
In design principle based on above-mentioned embodiment, in a wherein embodiment, engine base punching 2 is one
In design principle based on above-mentioned embodiment, a kind of direct current generator, including electric machine stand described above.
A kind of electric machine stand, as different from Example 1, as shown in fig. 7, engine base punching 2 is splitted structure.
In design principle based on above-mentioned embodiment, in a wherein embodiment, which is
2-8 blocks.During using splitted structure, the mode of generally use inner circle positioning is made using splitted structure, and in this approach.
During using splitted structure, there is certain requirement usually in the design for dividing valve seam in order to ensure to laminate effect,
The seam of adjacent engine base punching is generally avoided to overlap, it is therefore desirable to rotate a certain angle, and with during rotating, positioning
There to be variation.And here, according to the design for dividing valve quantity, rotation angle is generally using the half for dividing valve radian.Specifically, herein
Exemplified by dividing valve to be 4 pieces：Specifically, tool locating hole 10 is 8, and it is distributed on same circumference, is set respectively on splitted structure
It is equipped with a location hole 11, the seam shape angle at 45 ° in adjacent engine base punching, that is, rotate 45 ° of assemblings.Preferably
In, two adjacent tool locating holes of tool locating hole 10 are interleaved to the positioning for engine base punching.
In conjunction with the embodiments 1 and embodiment 2, a kind of assembling principle of electric machine stand of the utility model it is as follows：By former and
Engine base punching shapes, and in former with processing corresponding pilot hole and tool locating hole in engine base punching.After machining,
It is fixed on the tool locating hole of end former using positioning linkage rod/screw rod, is connected by the location hole in engine base punching and positioning
Bar/screw rod carries out positioning and laminates placement assembling, after the accurate positioning of position, penetrates fastening screw, realizes that fastening tenses using nut,
After the completion of, the rigid that reinforcing rib plate body further improves electric machine stand is welded between former.
In conclusion the utility model solves, current large-scale dc motor engine base assembly relation is complicated, and rigid is not
The problem of sufficient, the method optimizing assembly method laminated using engine base punching, is simplified assembly manipulation process, passes through former and reinforcing rib
Plate body makes stand structure simple, and rigid meets the requirements, meanwhile, using the design of assembling positioning, motor machine has been effectively ensured
The assembly precision of seat.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.