CN202989425U

CN202989425U - Drag hook connecting structure of electronic dobby

Info

Publication number: CN202989425U
Application number: CN 201320009956
Authority: CN
Inventors: 李正军; 胡广; 吕伯洪; 姚明永
Original assignee: XINCHANG HEQUN MACHINERY CO Ltd
Current assignee: Zhejiang crane group machinery limited company
Priority date: 2013-01-08
Filing date: 2013-01-08
Publication date: 2013-06-12
Anticipated expiration: 2023-01-08

Abstract

The utility model discloses a drag hook connecting structure of an electronic dobby and belongs to the field of dobby accessory devices. The conventional dobby drag hook connecting structure has the defects of severe abrasion and short service life. The drag hook connecting structure comprises a connecting plate and a drag hook, wherein the drag hook is connected with the connecting plate through a core shaft; a plastic lining is sleeved on the core shaft; when the drag hook connecting structure works, the core shaft is fixed on the connecting plate (or the drag hook) to rotate relative to the drag hook (or the connecting plate); the plastic lining is sleeved on the rotating part of the core shaft; the core shaft is fixed on the connecting plate; and the plastic lining is fastened inside a shaft hole. According to the drag hook connecting structure, as the plastic lining is sleeved on the rotating part of the core shaft, because of the deformation of the plastic lining in working, the contact area is increased, the load in unit area is reduced, the abrasion is reduced, and the service life is prolonged; and the drag hook connecting structure is simple in structure and easy to implement.

Description

A kind of electronic dobby machine pulling hook connecting structure

Technical field

The utility model belongs to dobbies auxiliary equipment field, and is especially relevant with a kind of electronic dobby machine pulling hook connecting structure.

Background technology

On electronic dobby machine, drag hook 2 adopts mandrel 3 to connect (seeing Fig. 1) with connecting plate 1, wherein mandrel adopts the grinding after quenching HRC40 of 45# carbon constructional quality steel to make, drag hook is made with 45# steel forgings, ZG45 cast steel or QT450-10 spheroidal graphite cast-iron, on drag hook, ream machining goes out the axis hole with axle core matched in clearance, produces alternating pressure load during work between axis hole and axle core.See Fig. 2, generally, the drag hook working pulling force is about 1000N, and the rotational angle during work is 26 ° (seeing δ in Fig. 1), and the contact-making surface of mandrel B3 and drag hook B2 axis hole only is distributed in approximately 1/100 scope of whole endoporus circumference (as shown in β in Fig. 2, be about 4 ± 0.5 °), drag hook axis hole and axle wicking surface contact load reach 200Mpa, cause the part to be subjected to tension and compression during work, wear and tear quite serious, be ellipticity after the work of drag hook axis hole, working life is only 2000 hours.

The utility model content

The purpose of this utility model is exactly to solve the short defective of serious wear, life-span that existing electronic dobby machine pulling hook connecting structure exists, and a kind of long service life, anti abrasive electronic dobby machine pulling hook connecting structure are provided.

For this reason, the utility model is taked following technical proposals: a kind of electronic dobby machine pulling hook connecting structure, comprise connecting plate and be connected in drag hook on connecting plate by mandrel, it is characterized in that, on described mandrel, cover has the plasticity lining, offer the axis hole that is coupling with mandrel on described drag hook, described mandrel is fixed on connecting plate, and described plasticity lining is fastened in axis hole.

As to technique scheme replenish and perfect, the utility model also comprises following technical characterictic.

Maintain the gap between described mandrel and plasticity lining.

During the utility model work, mandrel is fixed on connecting plate (or drag hook) and upward rotates relative to drag hook (or connecting plate), and the plasticity lining namely is set in this rotation section of mandrel; When being squeezed, the plasticity lining produces distortion, increases contact-making surface, reduces the load on unit are, reduces wearing and tearing, and is life-extending.

Use the utility model can reach following beneficial effect: the utility model is by sheathed plasticity lining on the rotation section of mandrel, thereby by the distortion of plasticity lining, increase contact-making surface when work, reduce the load on unit are, reduce wearing and tearing, life-extending; Simple in structure, easy to implement.

Description of drawings

Fig. 1 is the work schematic diagram of drag hook and connecting plate.

Fig. 2 is the connection diagram of existing drag hook and connecting plate.

Fig. 3 is the connection diagram of drag hook of the present utility model and connecting plate.

The specific embodiment

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in detail.

As shown in Figure 3, the utility model comprises connecting plate and is connected in drag hook on connecting plate by mandrel, mandrel A3 is fixed (as welding or being threaded connection) on connecting plate A1, offer the axis hole that is coupling with mandrel A3 on drag hook A2, nylon plasticity lining A4 of close-fitting (makes with nylon 1010, nylon 66 etc. in axis hole, have good plasticity), and keep certain gap A5 between nylon plasticity lining and mandrel, be convenient to mandrel and rotate in nylon bush.

During the utility model work, the plasticity lining is squeezed and produces distortion, the α scope that the contact-making surface of mandrel and plasticity lining can distribute shown in the figure (being about 65 ± 3 °), increased the contact area between mandrel and plasticity lining, make contact load be reduced to 12Mpa, increased simultaneously wear resistence, working life extended to more than 10000 hours, reached as high as 25000 hours.

Claims

1. electronic dobby machine pulling hook connecting structure, comprise connecting plate (A1) and be connected in drag hook (A2) on connecting plate by mandrel (A3), it is characterized in that: on described mandrel, cover has plasticity lining (A4), offer the axis hole that is coupling with mandrel on described drag hook (A2), described mandrel is fixed on connecting plate, and described plasticity lining (A4) is fastened in axis hole.

2. a kind of electronic dobby machine pulling hook connecting structure according to claim 1, is characterized in that: maintain gap (A5) between described mandrel and plasticity lining.