CN202744209U

CN202744209U - Connection device for encoders

Info

Publication number: CN202744209U
Application number: CN 201220471050
Authority: CN
Inventors: 李万录
Original assignee: Taiyuan Heavy Industry Co Ltd
Current assignee: Taiyuan Heavy Industry Co Ltd
Priority date: 2012-08-31
Filing date: 2012-08-31
Publication date: 2013-02-20
Anticipated expiration: 2022-08-31

Abstract

The utility model discloses a connection device for encoders, and the connection device relates to auxiliary equipment for cranes and is used for solving the technical problem that the existing connection devices are easy to cause encoder damage. According to the connection device for encoders, an encoder is fixed on a bracket; the bracket is fixed on a bearing pedestal; a driving lever is connected with a driving plate; the other end of the driving lever is inserted in an eccentric hole of a bearing rotation member; and the driving plate is fixed on an input shaft of the encoder by a fastener. The connection device for encoders is characterized in that a symmetric U-shaped groove is arranged at two side of the driving plate; a rolling bearing is arranged at the head part of the driving lever; and the driving lever with the rolling bearing is inserted in the U-shaped groove to realize the rotation of the encoder. The connection device for encoders is used for the connection between the reeling output shafts of hoisting mechanisms of cranes and the encoders, and has the advantages that the structure is simple, the use is reliable, the manufacturability is good and the encoders are not easy to be damaged.

Description

A kind of connecting device of coder

Technical field

The utility model relates to the accessory equipment of hoisting crane, particularly for a kind of coder of crane hoisting mechanism and the connecting device of reel output shaft.

Background technology

The connecting device of crane hoisting mechanism reel output shaft and coder has two kinds of structures at present:

The first as shown in Figure 1, coder 1 usefulness bolt 2 and packing ring 3 are fixed on the support 4, support 4 scenes are welded on the bearing seat 8; Reel output shaft 7 is contained in the center of bearing seat 8.Coupler 6 is contained between reel output shaft 7 and the coder input shaft, is close to firmware 5 transferring power, realizes the rotation of coder.

This connecting device often surpasses the permission setting range of coupler because of right alignment between output shaft and the coder input shaft, cause coupler, coder to damage.And to guarantee that right alignment is not overproof, all be very difficult thing for machine up and installation.This connecting device can not use at a high speed.

The second as shown in Figure 2, coder 1 usefulness bolt 2 and packing ring 3 are fixed on the support 4, support 4 scenes are welded on the bearing seat 8.Driving lever 10 and driver plate 9 solder togethers.The free end of driving lever 10 is inserted in the eccentric orfice of bearing seat 8 revolving parts.Fastener 5 is fixed on driver plate 9 on the coder input shaft, realizes the rotation of coder.

This connecting device is by the eccentric orfice on the bearing seat 8, although reduced the right alignment requirement.But still have the following disadvantages: A, right alignment require less than or equal to the semidiameter of driving lever 10 with eccentric orfice, otherwise can aggravate the damage of coder; Gapped between B, driving lever 10 and the eccentric orfice, when causing the reel rotation direction to change, produce and impact; C, driver plate 9 are contained in when rotating on the coder input shaft, can damage coder because of overbalance; Eccentric orfice on D, driving lever 10 and the bearing rotary spare produces cliding friction in the transferring power process, can accelerate the wearing and tearing in driving lever 10 and hole.This connecting device should not use at a high speed.

The utility model content

The purpose of this utility model is to overcome the shortcoming of prior art, and a kind of connecting device of coder is provided, and solve existing connecting device because the coupler fatiguability technical matters destroying or cause coder to damage because of the overbalance of driver plate in a short time.

The utility model is achieved through the following technical solutions:

Shown in Fig. 3,4, a kind of connecting device of coder, coder is fixed on the support with bolt and packing ring, support is fixed by bolts on the bearing seat, driving lever is connected with driver plate, the other end of driving lever is inserted in the eccentric orfice of bearing rotary spare, fastener is fixed on driver plate on the input shaft of coder, it is characterized in that: there is symmetrical U-shaped groove on the both sides of described driver plate, the head of described driving lever is equipped with antifriction-bearing box, the described driving lever that antifriction-bearing box is housed inserts in the U-shaped groove of described driver plate, realizes the rotation of coder.

The utility model compared with prior art has the following advantages and beneficial effect:

1. owing to the eccentric orfice of driving lever and bearing rotary spare is affixed, the input shaft of driver plate and coder is affixed, makes the right alignment decrease of input and output shaft, and the restriction that not required by machine up and setting accuracy, has reduced tooling cost.

2. substitute coupler with fastener, driver plate, driving lever, eliminated the root that coder damages.

3. can not produce impact during reel conversion hand of rotation.

4. because the cliding friction between driving lever and the driver plate becomes friction of rolling, reduce friction drag, improved efficient, prolonged service life.

5. because driver plate is designed to symmetrical double-U-shaped slotted disk, so the input shaft of coder does not have additional out-of-balance force, the utility model almost is pure torque input (the ideal operation state of coder), has effectively protected coder not to be damaged.

6. in high speed, low speed situation, all can install and use.

The utility model is used for being connected of crane hoisting mechanism reel output shaft and coder, has simple in structurely, uses reliably, and anufacturability is good, and coder is difficult for impaired advantage.

Description of drawings

Fig. 1 is the structural representation of a kind of encoder connecting device of prior art;

Fig. 2 is the structural representation of another encoder connecting device of prior art;

Fig. 3 is structural representation of the present utility model (A-A cutaway view).

Fig. 4 is the structural representation of driver plate;

Fig. 5 is the structural representation of driving lever.

The utility model is further described by preferred embodiment below in conjunction with accompanying drawing.

The specific embodiment

Shown in Fig. 3,4,5, a kind of connecting device of coder, coder 1 usefulness bolt 2 and packing ring 3 are fixed on the support 4, support 4 is fixed by bolts on the bearing seat 8, driving lever 10 is connected with driver plate 9, the other end of driving lever 10 is inserted in the eccentric orfice of bearing rotary spare, and fastener 5 is fixed on driver plate 9 on the input shaft of coder 1; There is symmetrical U-shaped groove 9-1 on the both sides of described driver plate 9, and the head of described driving lever 10 is equipped with antifriction-bearing box 10-1, and the described driving lever 10 that antifriction-bearing box is housed inserts in the U-shaped groove of described driver plate 9, realizes the rotation of coder.

Claims

1. the connecting device of a coder, coder (1) is fixed on the support (4) with bolt (2) and packing ring (3), support (4) is fixed by bolts on the bearing seat (8), driving lever (10) is connected with driver plate (9), the other end of driving lever (10) is inserted in the eccentric orfice of bearing rotary spare, fastener (5) is fixed on driver plate (9) on the input shaft of coder (1), it is characterized in that: there is symmetrical U-shaped groove (9-1) on the both sides of described driver plate (9), the head of described driving lever (10) is equipped with antifriction-bearing box (10-1), and the described driving lever (10) that antifriction-bearing box is housed inserts in the U-shaped groove of described driver plate (9).