CN2568795Y

CN2568795Y - Lubricating mechanism of headpiece system of pneumatic rock drill

Info

Publication number: CN2568795Y
Application number: CN 02243160
Authority: CN
Inventors: 蔡叔眉
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-07-10
Filing date: 2002-07-10
Publication date: 2003-08-27
Anticipated expiration: 2012-07-10

Abstract

The utility model relates to a lubricating mechanism of the machine head system of a pneumatic rock drill, which is composed of an air cylinder, a piston, a guiding sleeve, a machine head, a rotating sleeve, a drill tail sleeve and a drill rod. The reciprocating and rotational movement of the piston in the inner holes of the air cylinder and the guiding sleeve form three rubbing pairs of the machine head system. The three rubbing pairs are a spline rubbing pair between the piston and the rotating sleeve, a rotating rubbing pair between the rotating sleeve and the machine head and a vibrating rubbing pair between the drill tail sleeve and the drill rod. A lubricating mechanism is characterized in that each part corresponding to each spline slot of the rotating sleeve is provided with a flow guiding hole. The excircle axial part of the rotating sleeve is uniformly distributed with three edge cutting planes used for flow guidance. The front end of the machine head is provided with a plurality of flow leading holes. Compared with a product of the prior art, the leading quantities of atomized oil and the residual air of compressed air are enlarged, lubricating condition is improved and the use reliability and the service life of the rock drill are increased.

Description

The lubricating structure of a kind of pneumatic rock drilling machine head system

[technical field]

The utility model relates to the rock drilling machinery technical field, specifically belongs to the lubricating structure of a kind of pneumatic rock drilling machine head system.

[background technology]

At present, three need lubricant housings of pneumatic rock drilling machine head system---spline is paid, bit shank is paid, cooperate the lubrication oil supply of paying with turning set be during by the exhaust of cylinder ante-chamber to head, and the compressed air residual air that drainage partly contains fogging oil pays through above-mentioned friction that the position realizes.Drainage way has two kinds:

A kind of is single drainage way, and the residual air of promptly calming the anger is flowed through after spline pays the gap, and by narrow and small approach, the bit shank of flowing through is paid to cooperate with turning set with head and paid, and leads to atmosphere.It is simple in structure, but when the operation of hammer drill heavy load, because of the tolerance of flowing through is few, the atomizing oil mass is also few, causes insufficient lubrication, shortens the application life of hammer drill.

Another kind is two drainage ways, and promptly the residual air of calming the anger of paying by spline is only led to bit shank and paid.In addition, a drainage gas circuit is set again, is used for lubricated head and cooperates with turning set pair.Its complex structure, and the residual air of calming the anger of paying because of the spline of flowing through reduces, the lubricating condition variation that spline is paid shortens application life of hammer drill equally.

[summary of the invention]

Technical problem to be solved in the utility model is: the lubricating structure of a kind of pneumatic rock drilling machine head system is provided, improves the lubrication states that three frictions of head are paid, the dependability and the application life of improving hammer drill.

For solving the problems of the technologies described above, the utility model adopts following technical scheme:

The lubricating structure of this pneumatic rock drilling machine head system, by cylinder, piston, fairlead, head, turning set, bit shank cover, drill steel constitute, piston back and forth forms three fastnesses of head system with rotatablely moving cylinder and fairlead endoporus, it is the spline fastness between piston and turning set, spin friction between turning set and head is paid, the vibration fastness between bit shank cover and drill steel, and its lubricating structure feature is: the corresponding position at every spline of turning set is provided with pod apertures; Axial position, garden outside turning set, uniform three water conservancy diversion are used the chamfered edge plane; At the head front end a plurality of conduction holes are set.

Compare with prior art products, compressed air residual air and fogging oil introducing amount increase, and improve lubrication state, improve the dependability and the application life of hammer drill.

[description of drawings]

Fig. 1 is the axial sectional view of the utility model embodiment;

Fig. 2 is the A-A profile among Fig. 1;

Fig. 3 is the B-B profile among Fig. 1;

Fig. 4 is the C-C profile among Fig. 1.

[specific embodiment]

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

Consult accompanying drawing, Fig. 1, Fig. 2, Fig. 3, Fig. 4 have shown the structure of the utility model embodiment from different lines of vision.The lubricating structure of this rock driller head system is made of cylinder 1, piston 2, fairlead 3, head 4, turning set 5, bit shank cover 6 and drill steel 7.

Shown in the accompanying drawing 1, piston 2 is in the position of backhaul exhaust.At this moment, piston 2 microcephalies' spline has been linked up the preceding cavity gas chamber of cylinder 1, and in piston 2 backhaul processes after this, compressed air residual air flows through the spline that is made of piston 2 and turning set 5 with fogging oil all the time pays fit clearance, and lubricated spline friction is paid.Then, calm the anger residual air shunting.Part residual air is arranged to atmosphere by the fit clearance of bit shank cover 6 and drill steel 7, and the lubricated bit shank friction of fogging oil is paid.Most of residual air is accompanied by fogging oil by the pod apertures on every spline of the turning set 5 shown in accompanying drawing 2, accompanying drawing 3, flow through a plurality of conduction holes rows of cavity that many chamfered edge planes form and head 4 front ends on head as shown in Figure 44 and the turning set 5 outer gardens to atmosphere, the rotation friction that lubricated head 4 and turning set 5 constitute pair.Piston 2 is under continuous reciprocating motion, and compressed air residual air not broken belt fogging oil above-mentioned three frictions of flowing through and paid, thereby improves the lubricated of rock driller head system, reduces wearing and tearing, improves the application life of the dependability of hammer drill.

Claims

The lubricating structure of a kind of pneumatic rock drilling machine head system, it is by cylinder (1), piston (2), fairlead (3), head (4), turning set (5), bit shank cover (6), drill steel (7) constitutes, piston (2) back and forth forms three fastnesses of head system with rotatablely moving cylinder (1) and fairlead (3) endoporus, it is the spline fastness between piston (2) and turning set (5), spin friction between turning set (5) and head (4) is paid, vibration fastness between bit shank cover (6) and drill steel (7), its lubricating structure feature is: the corresponding position at every spline of turning set (5) is provided with pod apertures; Axial position, garden outside turning set (5), uniform three water conservancy diversion are used the chamfered edge plane; At head (4) front end a plurality of conduction holes are set.