CN2679911Y

CN2679911Y - Linear dynamo

Info

Publication number: CN2679911Y
Application number: CN 200420025210
Authority: CN
Inventors: 龚家雄; 殷明; 龚晓骏
Original assignee: AIBO ELECTRICAL EQUIPMENT PLANT CHANGZHOU
Current assignee: AIBO ELECTRICAL EQUIPMENT PLANT CHANGZHOU
Priority date: 2004-03-08
Filing date: 2004-03-08
Publication date: 2005-02-16
Anticipated expiration: 2014-03-08

Abstract

The utility model discloses a linear electric motor, comprising an electric motor and a speed reduction box; the electric motor and the speed reduction box are fixedly connected; the inner part of the speed reduction box is provided with a worm screw, a worm wheel engaged with the worm screw, and a screw rod engaged with the inner hole of the worm wheel. One end of the screw rod which extends out of the box body of the speed reduction box is provided with an installing head; the box body of the speed reduction box is connected with the other installing head; the worm wheel is rotatably matched with the box body of the speed reduction box through a bearing; the electric motor shaft and the worm screw are manufactured to an integration; the merging position of the electric motor shaft and the worm screw is provided with the bearing, the outer ring of which is assembled on the front end cap of the electric motor, and the bearing and the electric motor are simultaneously assembled on the front end cap of the electric motor and the box body of the speed reduction box. The utility model has the advantages of simple structure, low manufacturing cost, stable operation, high transmission efficiency, and low noise.

Description

Linear electric motors

Technical field

The utility model relates to a kind of electric machine of doing straight reciprocating motion.

Background technology

Existing linear electric motors generally have motor and reduction box, parts such as worm screw, worm gear and screw mandrel are housed in the reduction box, in this structure, motor shaft and worm screw are to make separately to assemble then to link together, and connected mode generally adopts shaft coupling to connect or the axle sleeve connection adds screw etc.Because these syndetons need support by bearing than complexity and worm screw both ends, the shortcoming that part is many, manufacturing cost is high that this just causes linear electric motors and is adopted; The while motor shaft is connected with worm screw and is difficult to guarantee concentricity or had positioning phenomenon, big, the jiggly deficiency of vibration when easily causing the linear electric motors running.

Summary of the invention

The purpose of this utility model is to provide a kind of simple in structure and linear electric motors stably that turn round.

In order to achieve the above object, the utility model is by the following technical solutions: a kind of linear electric motors, have motor and reduction box, motor is fixedlyed connected with reduction box, be equipped with in the reduction box worm screw, with the worm gear of worm engaging and with the screw mandrel of worm gear endoporus engagement, an end of screw mandrel stretches out outside the reduction box casing and is provided with installation head, is connected to another installation head on the reduction box casing, worm gear is rotatably assorted by bearing and reduction box casing, and its improvement is: motor shaft and worm screw are made one; Motor shaft and worm screw converge the position and are provided with a bearing, the outer ring of bearing be assemblied on the motor front end housing or be assemblied in simultaneously on the motor front end housing and the reduction box casing on.

After adopting said structure, because motor shaft and worm screw are made one, this has just cancelled the syndeton between motor shaft and the worm screw, and motor shaft and worm screw converge the position and are provided with a bearing, preceding end bearing of traditional motor and worm screw rear end bearing are united two into one, and the bearing of cancellation worm screw front end, structure is simplified greatly, used part is few, low cost of manufacture; Simultaneously, this bearing outer ring be assemblied on the motor front end housing or be assemblied in simultaneously on the motor front end housing and the reduction box casing on, assembly precision is improved, not only motor shaft and worm screw concentricity height, and do not have positioning phenomenon, make the linear electric motors running steadily, the transmission efficiency height, noise is low.

Description of drawings

Fig. 1 is the structural representation of facing of linear electric motors of the present utility model;

Fig. 2 is the cutaway view of Fig. 1 along the A-A line;

Fig. 3 is the cutaway view Amplified image of Fig. 1 along the B-B line;

Fig. 4 is the C portion enlarged drawing of Fig. 3;

Fig. 5 is the upward view of Fig. 1;

Fig. 6 is the cutaway view Amplified image of Fig. 5 along the D-D line.

Embodiment

The embodiment that provides below in conjunction with accompanying drawing is described in further detail the utility model.

As shown in Figure 1, 2, 3, linear electric motors of the present utility model have motor 1 and reduction box 2, motor 1 is fixedlyed connected with reduction box 2, be equipped with in the reduction box 2 worm screw 2-7, with the worm gear 2-4 of worm screw 2-7 engagement and with the screw mandrel 2-3 of worm gear 2-4 endoporus engagement, the end of screw mandrel 2-3 stretches out outside the reduction box casing 2-1 and is provided with installation head 7, be connected to another installation head on the reduction box casing 2-1, worm gear 2-4 is rotatably assorted by bearing 2-5 and reduction box casing 2-1, and motor shaft 1-3 and worm screw 2-7 make one; Motor shaft 1-3 and worm screw 2-7 converge the position and are provided with a bearing 2-8, and the outer ring of bearing 2-8 is assemblied in motor front end housing 1-2 and goes up or be assemblied in simultaneously on the motor front end housing 1-2 and on the reduction box casing 2-1.

Shown in Fig. 3,5, for make worm screw 2-7 be subjected to big radial load to do the time spent can be limited, the adjustment screw 8 that also has been threaded on the reduction box casing 2-1, adjustment screw 8 front portions have the counterbore 8-1 that stretches into for the loose fit of worm screw 2-7 free end.Certainly, also can not establish adjustment screw 8, the front end of worm screw 2-7 is that free end can be unsettled; Also can on reduction box casing 2-1, establish a hole, with substitute adjustment screw 8 for worm screw 2-7 free end loose fit insertion.

As shown in Figure 4, in order to prevent bearing 2-8 axial endplay, guarantee assembly precision better, back-up ring 1-4 before and after the inner ring of bearing 2-8 on side and the motor shaft 1-3 offsets, outer ring one side of bearing 2-8 and the dead eye step 1-2-1 on the motor front end housing 1-2 offset, and opposite side leans by the dead eye step 2-1-1 on elastomeric pad 2-9 and the reduction box casing 2-1.

As shown in Figure 2, for the screw mandrel 2-3 to motion play the guiding role and spacing to the upper and lower stop of screw mandrel 2-3, be fixed with the guide post 2-2 that is enclosed within screw mandrel 2-3 one end periphery on the reduction box casing 2-1, guide post 2-2 front end is equipped with block 6, screw mandrel 2-3 front end is fixed with circular gasket 4 with screw 5, during screw mandrel 2-3 move left and right, these circular gasket 4 peripheries can rub mutually with guide post 2-2 inwall, the front end of circular gasket 4 can contact with block 6 rear ends, and the rear end of circular gasket 4 can contact with the spacing steel bowl of the bearing 2-6 on being contained in reduction box casing 2-1.Certainly, circular gasket 4 can not established yet.

Shown in Fig. 5,6, on the reduction box casing 2-1 transducer 9 is housed also, worm gear 2-4 is equipped with the side some magnet steel 10, and when worm gear 2-4 rotated, transducer 9 front ends can be faced mutually with magnet steel 10.

Shown in Fig. 1,3, come off in order to prevent that capacitor 1-1 on the motor 1 from meeting accident, the capacitor 1-1 on the motor 1 is fastened on motor 1 body by screw 1-5.

Shown in Fig. 2,3,5, motor 1 adopts two bolts 3 to fixedly connected with reduction box casing 2-1; Be respectively equipped with connecting hole 7-1,6-1 on connector 7 and the block 6.

When the utility model uses, shown in Fig. 1～3, connect with the mains for three inserted sheets on the capacitor 1-1 on the motor 1, motor 1 rotor will rotate, driving motor shaft 1-3 is that worm screw 2-7 rotates, worm screw 2-7 meshes and drives worm gear 2-4 rotation, and worm gear 2-4 then drives the rectilinear motion that screw mandrel 2-3 makes a certain direction; During motor 1 counter-rotating, screw mandrel 2-3 is moving linearly to another way.The circular gasket 4 that is contained in screw mandrel 2-3 one front end can be run into block 6 and the spacing steel bowl of bearing 2-6 respectively when screw mandrel 2-3 move left and right, that is arrives lower dead center and top dead centre.

Claims

1, a kind of linear electric motors, have motor (1) and reduction box (2), motor (1) is fixedlyed connected with reduction box (2), be equipped with in the reduction box (2) worm screw (2-7), with the worm gear (2-4) of worm screw (2-7) engagement and with the screw mandrel (2-3) of worm gear (2-4) endoporus engagement, one end of screw mandrel (2-3) stretches out outside the reduction box casing (2-1) and is provided with installation head (7), be connected to another installation head on the reduction box casing (2-1), worm gear (2-4) is rotatably assorted by bearing (2-5) and reduction box casing (2-1), it is characterized in that:

A, motor shaft (1-3) are made one with worm screw (2-7);

B, motor shaft (1-3) converge the position with worm screw (2-7) and are provided with a bearing (2-8), the outer ring of bearing (2-8) be assemblied in motor front end housing (1-2) go up or be assemblied in simultaneously motor front end housing (1-2) is gone up and reduction box casing (2-1) on.

2, linear electric motors according to claim 1 is characterized in that: the adjustment screw that also has been threaded on the reduction box casing (2-1) (8), adjustment screw (8) front portion have the counterbore (8-1) that stretches into for the loose fit of worm screw (2-7) free end.

3, linear electric motors according to claim 2, it is characterized in that: the back-up ring (1-4) before and after the inner ring of bearing (2-8) on side and the motor shaft (1-3) offsets, outer ring one side of bearing (2-8) and the dead eye step (1-2-1) on the motor front end housing (1-2) offset, and opposite side leans by the dead eye step (2-1-1) on elastomeric pad (2-9) and the reduction box casing (2-1).

4, linear electric motors according to claim 1, it is characterized in that: be fixed with the guide post (2-2) that is enclosed within screw mandrel (2-3) end periphery on the reduction box casing (2-1), guide post (2-2) front end is equipped with block (6), screw mandrel (2-3) front end is fixed with circular gasket (4) with screw (5), during screw mandrel (2-3) move left and right, this circular gasket (4) periphery can rub mutually with guide post (2-2) inwall, the front end of circular gasket (4) can contact with block (6) rear end, and the rear end of circular gasket (4) can contact with the spacing steel bowl of the bearing on being contained in reduction box casing (2-1) (2-6).

5, according to the described linear electric motors of claim 1～4, it is characterized in that: transducer (9) also is housed on the reduction box casing (2-1), some magnet steel (10) are equipped with in worm gear (2-4) side, and when worm gear (2-4) rotated, transducer (9) front end can be faced mutually with magnet steel (10).

6, linear electric motors according to claim 1 is characterized in that: the capacitor (1-1) on the motor (1) is fastened on motor (1) body by screw (1-5).