CN2744858Y

CN2744858Y - Self-lubricating concrete piston

Info

Publication number: CN2744858Y
Application number: CN 200420068726
Authority: CN
Inventors: 肖谦学; 潘小梅; 陈鹏; 张望希
Original assignee: CHANGSHA TIANYI TECHNOLOGY INDUSTRIAL Co Ltd
Current assignee: CHANGSHA TIANYI TECHNOLOGY INDUSTRIAL Co Ltd
Priority date: 2004-09-17
Filing date: 2004-09-17
Publication date: 2005-12-07
Anticipated expiration: 2014-09-17

Abstract

The utility model relates to a self-lubricating concrete piston, comprising a piston head and a connective handle. The piston head is in compression injection forming by integral rubber, and the working face of the piston head is arc or concave. The utility model has the advantages of simple structure, reasonable design, abrasion resistance, no leakage, long service life, low operation cost, easy maintenance, and superior technical characteristics.

Description

Selflubricating concrete piston

Technical field

The utility model relates to a kind of piston in the mechanical engineering, is specifically related to a kind of selflubricating concrete piston.

Background technique

Concrete pump is one of construction industry most important equipment, and as the core component concrete piston of concrete pump, the most of manufacturer of China still adopts outer for oil lubrication, piston head is the fabricated structure that metal body is inlayed rubber seal, strength and toughness is not good enough, wear-resisting property is poor, easily build-up of pressure leaks, influence transmission and concrete transmission distance and complete machine quantity delivered, because the wearing and tearing of rubber seal, cement mortar enters the gap in the piston head, the wearing and tearing casing wall, influence and enter in the concrete in the working life of concrete pump, particularly lubricant oil, influence concrete performance and engineering construction quality.In addition, traditional concrete piston adopts oil lubrication, needs configuration one cover lubrication oil supply system, and increase equipment uses inconvenience, and maintenance difficulties is big, the cost height.

Summary of the invention

Technical problem to be solved in the utility model is: it is easy to wear to solve the lubricated rubber seal of the outer fuel feeding of existing concrete transfer pump concrete piston, pressure leakage influences transmission and concrete transmission distance and quantity delivered, cement mortar enters piston head gap wearing and tearing casing wall influences working life, and lubricant oil enters the problem that concrete influences construction quality, and a kind of wear-resistant, long service life simple in structure, nothing leakage, transmission and concrete transmission distance, selflubricating concrete piston that technical performance is good are provided.

The technical solution adopted in the utility model is: this selflubricating concrete piston comprises piston head, connection handle, and piston head and connection handle are connected and fixed, and piston head is whole rubber injection-compression molding, and the working surface of piston head is arc or spill.

The utility model has thoroughly changed traditional concrete piston by metal body and the combined structure of rubber seal, so also just overcome traditional concrete piston rubber seal easy to wear, cause the shortcoming that piston pressure leaks, the transmission and concrete transmission distance is little, the complete machine quantity delivered descends, simultaneously, the wearing and tearing of rubber seal, cause cement mortar to enter the piston head working surface, the worn piston cylinder influences working life.What particularly the utility model had been cancelled traditional concrete piston not only simplifies the structure for lube plant outward, has reduced cost, and has overcome traditional concrete piston lubricating oil and enter the piston internal leakage, infiltrates in the concrete, influences concrete performance and construction quality.The utility model adopts the overall structure selflubricating, need not during use frequently to add lubricant oil, and is wear-resistant, long service life, and easy care can significantly reduce operating cost and maintenance cost, improves concrete quality, effectively promotes pumping machine general technical level.The utility model also can be widely used in pumping fields such as cement, oil, coal, waterpower, mud.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is a concrete pistons work principle schematic.

Embodiment:

Referring to Fig. 1, this selflubricating concrete piston comprises piston head 1, connection handle 2, and piston head 1 is connected and fixed with connection handle 2, and piston head 1 is whole rubber injection-compression molding, and the working surface 3 of piston head is arc or spill.

Referring to Fig. 2, selflubricating concrete piston of the present utility model is installed in the Material pipeline 4, and connection handle 2 connects promotion by hydraulic jack 5, and hydraulic jack 5 connects with hydraulic-pressure pump 7 by pipeline and two-way electronic commutation valve 6.

Claims

1, a kind of selflubricating concrete piston comprises piston head, connection handle, and piston head and connection handle are connected and fixed, and it is characterized in that piston head is whole rubber injection-compression molding, and the working surface of piston head is arc or spill.