CN2543249Y

CN2543249Y - DC Permanent-magnet speed-reducing motor

Info

Publication number: CN2543249Y
Application number: CN 02214586
Authority: CN
Inventors: 王厚立; 张福文
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-04-30
Filing date: 2002-04-30
Publication date: 2003-04-02
Anticipated expiration: 2012-04-30

Abstract

The utility model relates to an improved DC permanent-magnet speed-reducing motor which comprises a stator, a rotor, an electric brush, a shaft and a worm wheel and worm speed reducing apparatus, wherein the electric brush is arranged in a brush box outside which a brush holder is arranged, the radial outer side of the electric brush is orderly provided with a conductive brush seat board and an insulated cover board, and a spring and a connecting conducting wire are arranged between the electric brush and the brush seat board; a power shaft of the utility model and a worm shaft in the speed reducing apparatus are respectively independent two-section shafts which are connected by a flexible shaft coupler. The utility model has the advantages of simple structure, easy production, low cost, reliable wire connection, short conducting circuit, stable operation performance, low noise and long service life. The utility model and the speed reducing apparatus can be singly manufactured so as to be favorable to production organization.

Description

The DC permanent magnet decelerator

Technical field

The utility model relates to a kind of improved DC permanent magnet decelerator.

Background technology

The DC permanent magnet decelerator is widely used in the various aspects of industrial and agricultural production and life, is one of main power source.Existing DC permanent magnet decelerator, comprise stator, rotor, brush, axle, worm and gear speed-reduction apparatus, on the one hand, brush part-structure complexity, require precision-fit between each parts, manufacture difficulty is big, the cost of manufacture height, and the power lead-ining line connection is complicated, need pass through terminal screw, wiring nut, electric current lead-through and terminal block successively, a plurality of tie points, poor reliability causes loose contact easily, influences the stability of motor work, brush fixing, the insulation accessory is many, also can cause certain adverse effect to the service behaviour of motor; On the other hand, worm shaft is an axis in motor power axle and the deceleration device, be difficult for accurate location and installation, influence the engagement of worm gear, worm screw, the axial motion amplitude of worm screw is big again, causes the bearing axial load of axis to strengthen, and has increased the bearing noise, reduce the functional reliability of motor, shortened useful life.

Summary of the invention

Technical problem to be solved in the utility model is: a kind of improved DC permanent magnet decelerator is provided, and simple in structure, to make easily, cost is low, and line is reliable, the motor stable work in work, and noise is little, long service life.

DC permanent magnet decelerator described in the utility model, comprise stator, rotor, brush, axle, worm and gear speed-reduction apparatus, its brush places brush box, and brush box is outward a brush carrier, the radial outside of brush is established conduction brush seat board and cover plate successively, is provided with spring and is connected lead between brush and brush holder plate.

Brush carrier part building block is few, and is simple in structure, easy to make, and cost of manufacture is low, and the what is more important power lead-ining line connects simple, and the galvanic circle is brief, directly is crimped on the brush holder plate to get final product, and tie point is few, and good reliability has guaranteed the stability of motor work.

The brush holder plate is designed to " L " shape, and an end of " L " shape brush holder plate is a supply terminals, and the other end inserts in the location hole of brush carrier, and fixing, good stability are convenient to change brush, guarantee with power supply stablize be connected and casing and brush between the reliable electric insulation property.

Described motor, the worm shaft in its motor power axle and the deceleration device are independently two sections axles of difference, and two sections between centers are connected by flexible coupling.

Flexible coupling is made up of two shaft joint sheets and cushion pad, and cushion pad places between the two shaft joint sheets, and cushion pad is designed to rubber buffer, and cost is low, and is easy to make, and application performance is good, and its outer end stops end for moving, installation, easy to adjust.The outer end of rubber buffer is moved and stopped that end has guaranteed suitable adjusting range, has adjusted the proper alignment of diaxon, and is stable to reach engagement, reduces noise.

Motor and deceleration device connect and compose decelerator, and connected mode has two kinds, and a kind of is that electric motor end cap and deceleration device housing are located by pin, and screw is fastening; Another kind is that electric motor end cap and deceleration device housing are located by seam, and screw is fastening.

Flexible coupling; both transmit the motor power axle and passed to the revolving force of worm shaft; in among a small circle, alleviated again because supplementary load loss and the noise that the diaxon decentraction is brought; prolonged useful life; offset the axial force that a part of worm shaft passes to the motor power axle simultaneously, protected the steady-working state of motor effectively.

Suit elastic ring on the worm bearing of worm and gear speed-reduction apparatus, as rubber round section joint ring etc., when worm gear, when the worm screw dimensional tolerance changes, can among a small circle, be compensated by elastic ring, guarantee the suitability of mesh degree, make worm and gear centre-to-centre spacing adjustable within the specific limits, give worm gear, illeffects that worm engaging was brought to reduce a variety of causes.Further reduce noise, improve the operation stability of DC permanent magnet decelerator, reduction is worn and torn and is impacted, and increases the service life.

The utility model is simple in structure, makes easily, and cost is low, and line is reliable, and the galvanic circle is brief, the motor stable work in work, and noise is little, long service life.Motor and deceleration device can be made separately, help tissue production.

Description of drawings

Below in conjunction with the embodiment accompanying drawing the utility model is further described.

Fig. 1, the utility model one embodiment overall structure schematic diagram.

Fig. 2, brush part-structure schematic diagram.

Fig. 3, flexible coupling structural representation.

Fig. 4, worm and gear speed-reduction apparatus structural representation.

Fig. 5, existing complicated brush structural representation.

Among the figure: 1,5, end cap 2, brush carrier 3, stator 4, armature 6, flexible coupling 7, deceleration device 8, rubber round section joint ring 9, insulation cover plate 10, brush box 11, spring 12, brush 13, brush carrier 14, brush holder plate 15, lead 16,18, shaft joint sheet 17, rubber buffer 19, deceleration device housing 20, worm screw 21, bearing 22, worm gear 23, terminal screw 24, wiring nut 25, electric current is drawn part 26, headless screw 27, spiral cover 28, spring 29, brush 30, end cap 31, insulating case 32, brush box 33, terminal block 34, lead.

Embodiment

As shown in Figure 1, 2, 3, DC permanent magnet decelerator described in the utility model, comprise stator, rotor, brush, axle, worm and gear speed-reduction apparatus, its brush 12 places brush box 10, is brush carrier 13 outside the brush box 10, and the radial outside of brush 12 is established conduction brush seat board 14 and insulation cover plate 9 successively, brush 12 is provided with spring 11 and is connected lead 15 with 14 of brush holder plates, brush holder plate 14 is " L " shape, and an end of " L " shape brush holder plate 14 is a supply terminals, and the other end inserts in the location hole of brush carrier 13.Worm shaft in motor power axle and the deceleration device is independently two sections axles of difference, two sections between centers are connected by flexible coupling 6, shaft joint 6 is made up of two shaft joint sheets 16,18 and rubber buffer 17, cushion pad 17 places between the two shaft joint sheets 16,18, cushion pad 17 outer ends stop end for moving, and its four buffer point can be adjusted the concentricity of motor shaft and worm shaft within the specific limits.

As shown in Figure 4, be with rubber " O " shape elastic ring 8 on the worm bearing 21 of worm and gear speed-reduction apparatus, it can adjust the meshed center distance of worm gear, worm screw among a small circle, guarantees continuous, the stable engagement of worm gear, worm screw.

Claims

1, a kind of DC permanent magnet decelerator, comprise stator, rotor, brush, axle, worm and gear speed-reduction apparatus, it is characterized in that brush places brush box, brush box is outward a brush carrier, the radial outside of brush is established conduction brush seat board and insulation cover plate successively, is provided with spring and is connected lead between brush and brush holder plate.

2, motor according to claim 1 is characterized in that the brush holder plate is " L " shape, and an end of " L " shape brush holder plate is a supply terminals, and the other end inserts in the location hole of brush carrier.

3, motor according to claim 1 and 2 is characterized in that the worm shaft in motor power axle and the deceleration device is independently two sections axles of difference, and two sections between centers are connected by flexible coupling.

4, motor according to claim 3 is characterized in that flexible coupling is made up of two shaft joint sheets and cushion pad, and cushion pad places between the two shaft joint sheets.

5, motor according to claim 4 is characterized in that cushion pad is a rubber buffer.

6, motor according to claim 1 and 2 is characterized in that being with elastic ring on the worm bearing of worm and gear speed-reduction apparatus.

7, motor according to claim 6 is characterized in that elastic ring is the rubber round section joint ring.