CN103174735A

CN103174735A - Excavator boom pin roll system

Info

Publication number: CN103174735A
Application number: CN201110427980XA
Authority: CN
Inventors: 张军
Original assignee: XI'AN AONAITE SOLID LUBRICATION ENGINEERING RESEARCH Co Ltd
Current assignee: XI'AN AONAITE SOLID LUBRICATION ENGINEERING RESEARCH Co Ltd
Priority date: 2011-12-20
Filing date: 2011-12-20
Publication date: 2013-06-26

Abstract

The invention belongs to the mechanical operation field and relates to an excavator boom pin roll system. The system at least comprises a shaft pin and a pin bush sleeved on the shaft pin, the contact plane ends of the shaft pin and the pin bush are respectively provided with a plurality of latent hiding pits, and a gap between the shaft pin and the pin bush is filled with a lubricant. The excavator boom pin roll system, which allows the gap between the shaft pin and the pin bush to be filled with the lubricant and the contact planes of the shaft pin and the pin bush to adopt a hiding pit structure, has a hiding self-sealing effect, prolongs the service life of an excavator, and guarantees the normal, stable and efficient work.

Description

Big arm of digger bearing pin system

Technical field

The invention belongs to the mechanical work field, is big arm of digger bearing pin system.

Background technique

Under the conventional lubrication condition, in the big arm of digger swing process, during the friction of bearing pin, after the rubbing surface when relying on non-friction adheres to lubricant oil, fricative oil film reaches lubricated purpose.Critical load problem when when this lubricating system can only solve mechanical transmission position transmission of power, rubbing surface initially contacts, variation along with mechanical movement environment terms and conditions, conventional lubrication method and lubricant medium all can not make rubbing surface at utmost reduce wear, lubricated effective date can not extend at double, and the oiling agent storage that friction retains on the interface when occuring can't be guaranteed.

Summary of the invention

The purpose of this invention is to provide a kind of big arm of digger bearing pin system, improved the frictional loss of traditional excavator in swing process, increased the working life of excavator.

Technological scheme of the present invention is big arm of digger bearing pin system, which comprises at least pivot pin and the guide that is sleeved on pivot pin, and it is characterized in that: the surface of contact end of pivot pin and guide all arranges some holes of hiding, and the gap location of pivot pin and guide is filled with oiling agent.

Open lattice structure is adopted in the described hole of hiding, and the size in the hole of hiding is Φ 2.5mm*1mm, and adjacent two distances of hiding between the hole are 5mm.

Described oiling agent adopts solid lubricant, and the dosage Application standard of oiling agent is that pivot pin and guide gap location freely overflow oiling agent.

Characteristics of the present invention are to be filled with oiling agent between the gap of pivot pin and guide, and adopt at the surface of contact of pivot pin and guide the hole structure of hiding, and make it form submarine selfsealings effect; Extend simultaneously the working life of excavator, guaranteed the normal, steady, efficient of work.

Description of drawings

The present invention is further illustrated below in conjunction with embodiment.

Fig. 1 is the structural representation of big arm of digger pivot pin.

Fig. 2 is the assembly structure schematic diagram of big arm of digger bearing pin system.

In figure: 1, pivot pin; 2, guide; 3, the hole of hiding.

Embodiment

As shown in Figure 1, 2, at the internal surface of the outside of pivot pin 1 table and guide 2, some open dot matrix holes 3 of hiding is set, the size in the hole of hiding is Φ 2.5mm*1mm, and adjacent two distances of hiding between cheating are 5mm.

Guide 2 is sleeved on pivot pin 1, fills solid lubricant at the gap location of pivot pin 1 and guide 2.The dosage Application standard of oiling agent is that pivot pin and guide gap location freely overflow oiling agent.

During work, pivot pin rotates in guide, because surface of contact has adopted the dot matrix hole structure of hiding, has guaranteed pivot pin and guide when relative friction, and the free of discontinuities of oiling agent is replenished.Simultaneously, in the engineering that constantly rubs, can form lubricant film between pivot pin and guide, avoid direct friction, and then guaranteed the working life of excavator.

Claims

1. big arm of digger bearing pin system which comprises at least pivot pin and is sleeved on guide on pivot pin, and it is characterized in that: the surface of contact end of pivot pin and guide all arranges some holes of hiding, and the gap location of pivot pin and guide is filled with oiling agent.

2. the big arm of digger bearing pin system described according to claim 1, it is characterized in that: open lattice structure is adopted in the described hole of hiding, and the size in the hole of hiding is Φ 2.5mm*1mm, and adjacent two distances of hiding between the hole are 5mm.

3. the big arm of digger bearing pin system described according to claim 1, it is characterized in that: described oiling agent adopts solid lubricant, and the dosage Application standard of oiling agent is that pivot pin and guide gap location freely overflow oiling agent.