CN2813987Y

CN2813987Y - Elastic coupling

Info

Publication number: CN2813987Y
Application number: CN 200520044622
Authority: CN
Inventors: 卢海峰; 盛意; 张丰
Original assignee: Baoshan Iron and Steel Co Ltd
Current assignee: Baoshan Iron and Steel Co Ltd
Priority date: 2005-08-30
Filing date: 2005-08-30
Publication date: 2006-09-06
Anticipated expiration: 2015-08-30

Abstract

The utility model relates to an elastic coupling, particularly to an elastic coupling used for the connection of an encoder and a direct current machine. The elastic coupling comprises a first coupling, a second coupling and a connecting body which connects the first coupling and the second coupling. The elastic coupling is characterized in that the connecting body is an aligning spring; one end of the first coupling and one end of the second coupling are provided with bosses with square threads; both ends of the aligning spring are connected to the square threads of the first coupling and the second coupling. The utility model can enhance the detective accuracy of the encoder and decrease the shutdown time during the failure. The utility model has good stability and long service life.

Description

The elasticity catcher

(1) technical field

The utility model relates to elastic coupling flexible coupling, relates in particular to encoder is connected usefulness with direct current generator elastic coupling flexible coupling.

(2) background technique

Encoder is extensive use of in the DC Transmission speed control system, and how the testing precision of encoder will directly influence the stability of dc drive control system.For encoder, its testing precision is except that relevant with the quality of itself, and whether the elasticity catcher quality between encoder and the direct current generator, will directly influence testing precision.Existing elasticity catcher is made up of the first catcher coupling 1, the second catcher coupling 2, aligning plate 3, a head screw 4, keyway, consults Fig. 1.The first catcher coupling and the second catcher coupling are installed in the two ends of aligning plate respectively, and insert aligning plate two ends by tongue and groove, form a complete elasticity catcher.The first catcher coupling links together the encoder axle by axis hole and keyway, and fastening with a head screw.But when the encoder axle is installed,, be difficult for when therefore installing the encoder axle is inserted in the coupling axis hole, need the employing method of knocking the encoder axle could be packed into because that the axis hole of coupling cooperates with the encoder axle is tighter.Because encoder is very accurate Detecting element, encoder axially produces vibration when knocking, and causes the encoder axial float easily, and it is eccentric that CD, bearing are produced, thus the testing precision and the working life of having reduced encoder.

In addition, encoder is installed on the coupling shaft of direct current generator by the elasticity catcher, and motor drives machinery by speed reducer and rotates, and rotates as driving pinch roller.Because pinch roller is to different size (thickness, width) and the steel plate of hardness, impact force that pinch roller is suffered and speed are different, make the elasticity catcher produce play because impact load changes, cause the aligning plate on the elasticity catcher, because of axial float produces wearing and tearing and fracture, the keyway position wearing and tearing of catcher coupling, gap between aligning plate and catcher coupling increases, and the motor of at a high speed frequent in addition clockwise and anticlockwise running equally similar phenomenon can take place.Because the damage of elasticity catcher, it is big to cause encoder to detect the feedback signal error, makes the vibration of motor emerged in operation, not only influences the quality of product, and causes the coupling shaft fracture of mechanical roller.

(3) summary of the invention

The purpose of this utility model is to provide a kind of elasticity catcher, and this elasticity catcher can improve the testing precision of encoder, reduces the downtime, and good stability, long service life.

The utility model is achieved in that a kind of elasticity catcher, comprise first coupling, second coupling, connecting body, connecting body couples together first coupling and second coupling, it is characterized in that connecting body is the aligning spring, first coupling and second coupling, one end all have boss, have flat thread on the boss, the aligning both ends of the spring is connected in the flat thread of first coupling and second coupling.

Above-mentioned elasticity catcher, the described first coupling the other end is a rectangular boss, the rectangular boss center has axial hole, have deep trouth in the middle of the rectangular boss vertically, rectangular boss is divided into two forms two clamping plate, rectangular boss upper edge deep trouth Vertical direction has two screws, and screw is built-in with screw and the axial hole on the rectangular boss can be compressed.

The utility model is to change existing aligning plate into the aligning spring, and the elasticity of spring is good than the aligning plate, and anti-twist, the anti-vibration of energy has stronger shock-resistant ability.First coupling that is connected with the encoder axle adopts the axis hole of clamp plate type; the encoder axle just need not knock and can easier insert; tighten the screw on the clamping plate after the insertion, axis hole is tightly clamped the encoder axle, avoided knocking like this encoder axle; connect fastening; the intensity height has guaranteed the testing precision of encoder to direct current generator, reduces the downtime; and good stability, and prolonged its working life

(4) description of drawings

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

Fig. 1 is existing elasticity catcher structural representation;

Fig. 2 is the utility model elasticity catcher structural representation;

Fig. 3 is the first coupler structure schematic representation;

Fig. 4 is the first shaft coupling side view;

Fig. 5 is a G portion enlarged diagram among Fig. 3.

Among the figure: 1 first catcher coupling, 2 second catcher coupling, 3 aligning plates, 4 branch head screws, 5 first coupling, 6 aligning springs, 7 second coupling, 8 screws, 9 rectangular boss, 10 axis holes (axial hole), 11 boss, 12 flat threads.

(5) embodiment

Referring to Fig. 2, a kind of elasticity catcher comprises first coupling 5, second coupling 7, connecting body, and connecting body is an aligning spring 6.First coupling 5 and second coupling, 7 one ends all have boss 11, have flat thread 12 on the boss 11, referring to Fig. 3, Fig. 5.Aligning spring 6 two ends are connected in the flat thread 12 of first coupling 5 and second coupling 7.The pitch of flat thread 12 is less than the pitch of aligning spring 6, and first,

second coupling

5,7 boss 11 ends are inserted 6 mouthfuls on aligning spring, tightens

coupling

5,7, makes to be connected can not produce between

coupling

5,7 and the aligning spring 6 to relatively move; In the attachment portion, scribble adhesive simultaneously, make

coupling

5,7 and aligning spring 6 fuse.

Referring to Fig. 3, Fig. 4, first coupling, 5 the other ends are rectangular boss 9, rectangular boss 9 centers have axial hole 10, have deep trouth in the middle of the rectangular boss 9 vertically, rectangular boss 9 is divided into two forms two clamping plate, rectangular boss 9 upper edge deep trouth Vertical direction have two screws, and screw is built-in with screw 8 and the axial hole on the rectangular boss 9 10 can be compressed.First coupling 5 links to each other with the encoder axle, during installation, only needs first coupling, 5 one ends are inserted on the encoder spindle nose, go into hand push then, after being in place, the screw on the clamping plate 8 is tightened, the axial hole 10 that is about on the clamping plate is tightly pushed down encoder axle and fastening.

The other end of second coupling 7 is connected on the coupling of shaft behind the motor, only needs during installation the coupling axle inserted in second coupling, 7 axis holes to connect by keyway, and fastening with branch head screw 4.

The utility model can improve the testing precision of encoder, reduces the downtime, and good stability, long service life.

Claims

1. an elasticity is taken over, comprise first coupling, second coupling, connecting body, connecting body couples together first coupling and second coupling, it is characterized in that connecting body is the aligning spring, first coupling and second coupling, one end all have boss, have flat thread on the boss, the aligning both ends of the spring is connected in the flat thread of first coupling and second coupling.

2. elasticity catcher according to claim 1, it is characterized in that the first coupling the other end is a rectangular boss, the rectangular boss center has axial hole, have deep trouth in the middle of the rectangular boss vertically, rectangular boss is divided into two forms two clamping plate, rectangular boss upper edge deep trouth Vertical direction has two screws, and screw is built-in with screw and the axial hole on the rectangular boss can be compressed.