CN200998892Y

CN200998892Y - Hand-held pneumatic rock drifter

Info

Publication number: CN200998892Y
Application number: CNU2007200062111U
Authority: CN
Inventors: 蔡敏; 蔡建; 蔡文捷
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-01-29
Filing date: 2007-01-29
Publication date: 2008-01-02
Anticipated expiration: 2017-01-29

Abstract

The utility model relates to handhold air-powered rock chiseling machine, which is composed of a rubber shaking reducing handle, an enforcement tendon, a flexible sleeve, a handle tie-in, a handle, a operating handle, a valve tank, a double edge surface valve plate, a valve base, a cylinder, a piston, a rachet wheel, a detent, a flower lock sleeve, a rotating sleeve, a nose , a poker bar clamp , a screw, a spring gasket, a long rod bolt and an air tube. The utility model solves the defects of the prior art, at the same time, the utility model has simple structure, convenient manufacture and installation, long service life, which has greater promotion and adaptation value.

Description

The hand-held pneumatic rock drill

Technical field

The utility model relates to a kind of hand-held pneumatic rock drill, can be used for holing on the members such as brick, stone, concrete, is applicable to operations such as quarrying industry, stone carving and urban construction.

Background technology

The basic structure of the existing hand-held pneumatic rock drill of China is very nearly the same, form by rubber shock-absorbing handgrip, handgrip joint, handle body, control valve, distributing valve group, cylinder body, piston, head, ratchet, ratchet, turning set and drill steel, the weak point of these rock drills is: (1) rubber shock-absorbing handgrip undercapacity, and fragile; (2) length of action of ratchet and ratchet takies more multimachine body inner space less than the physical length of ratchet, and the wearing and tearing of ratchet are big, and service life is short; (3) convex surface of cylinder ends is little, is unfavorable for cooperating between cylinder body and head, and vibrations are big during work; (4) space is little between ratchet and head, and the piston instantaneous pressure that compressed air is produced when stroke movement is big, is unfavorable for the operation of piston.

Summary of the invention

The utility model has solved the above-mentioned defective that prior art exists, purpose be to provide a kind of technical performance advanced person, simple in structure, make hand-held pneumatic rock drill easy for installation, long working life,

The utility model is to constitute like this: comprise the body with handle, be provided with reinforcement in the described handle, described body is provided with tracheae from top to bottom successively, the distributing valve group, cylinder, be located at reciprocating-piston and head in the cylinder in order to beat drill steel, the piston rod outer surface of described reciprocating-piston is provided with helical form keyway and linearity keyway, it is characterized in that, be provided with the ratchet that is placed in the piston rod periphery in the described head, ratchet and turning set, described ratchet inwall is fixedly connected and is bumped into the driving key of helical form keyway, the equal in length of the length of described ratchet and ratchet external tooth, be provided with colored lock tube in the described turning set, described colored lock tube inwall is fixedly connected and is bumped into the driving key of linearity keyway.

Remarkable advantage of the present utility model: be provided with reinforcement in (1) rubber shock-absorbing handgrip, increase the intensity of handgrip, make handgrip more durable; (2) equal in length of the length of action of ratchet and ratchet and ratchet, ratchet external tooth, ratchet, ratchet external tooth effectively utilize length longer, more wear-resistant.Simultaneously, the utility model is simple in structure, manufacturing is easy for installation, long working life.

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the A-A profile of Fig. 1.

Fig. 3 is the B-B profile of Fig. 2.

The specific embodiment

As shown in Figure 1: hand-held pneumatic rock drill of the present utility model, by rubber shock-absorbing handgrip (1), reinforcement (2), resilient sleeve (3), handgrip joint (4), handle body (5), control valve (6), valve cabinet (7), two faceted pebble valve blocks (8), centrepin (9), valve seat (10), cylinder body (11), piston (12), ratchet (13), tower spring (14), ratchet (15), flower lock tube (16), turning set (17), head (18), pricker card (19), nut (20), spring washer (21), cylinder body exhaust outlet (22), valve group alignment pin (23), cam pin (24), bolt of long stem (25), tracheae (26) is formed.

Control valve (6) is contained in the handle body (5), by slewing maneuver valve (6) thus interior air flow direction passage of control handle body (7) and size.

Rubber shock-absorbing handgrip (1) by handgrip joint (4) with thread connection on handle body (5), be provided with reinforcement (2) in the rubber shock-absorbing handgrip (1); Two faceted pebble valve blocks (8) are inserted in cam pin (24), centrepin (9) is installed between valve cabinet (7) and the valve seat (10), valve cabinet (7) is connected with handle body (5), valve seat (10) is connected with cylinder body (11), and valve cabinet (7), valve seat (10), cylinder body (11) are by valve group alignment pin (23) location; The both sides of valve seat (10) are provided with passage and communicate with the forward and backward cavity of cylinder body (11) respectively, two faceted pebble valve blocks (8) can not be simultaneously and valve seat (10) both sides closing, by the swing of two faceted pebble valve blocks (8) on valve seat (10) two faceted pebbles are replaced and valve seat (10) closing, thereby realize opening and closing of passage, make compressed air lead to the chamber, front and back of cylinder body (11) through valve cabinet (7) by two faceted pebble valve blocks (8) and valve seat (10) control by handle body (5).

Piston (12) is packed into, and cylinder body (11) is interior to be divided into front/back cavity to cylinder body (11), and when the ante-chamber air inlet, piston (12) is made stroke movement, and when the back cavity air inlet, piston is made drawback movement; Ratchet (15), tower spring (14) are installed in the ratchet holddown groove of head (18) shell; The piston rod of piston (12) is packed in the ratchet (13), and the helicla flute of piston rod is meshed with the inner driving key of ratchet (13); The turning set (17) of packing into makes the driving key of the colored lock tube (16) in the turning set (17) be meshed with the piston rod straight trough; Being inserted in head (18) makes the external tooth of ratchet (13) be meshed with ratchet (15).Head (18) adopts two layers to empty setting, makes between ratchet (13) and head (18) inwall the space bigger, and piston (12) instantaneous pressure that compressed air is produced when stroke movement is little, and the resistance that piston (12) is moved is little.Inserting two bolt of long stems (25) handle bodies (5), valve cabinet (7), valve seat (10), cylinder body (11) and head (18) from outside bolt hole couples together.The union end that cylinder body (11) is placed in head (18) adopts big planar projections setting, makes to cooperate more firmly between cylinder body (11) and head (18), and the vibrations when reducing body work reduce the body wearing and tearing.Be inserted in spring washer (21), screw nut (20).

During work, connect compressed air by tracheae (26), rotating control valve (6) by hand makes compressed air enter cylinder body (11) ante-chamber through tracheae (26), handle body (5), control valve (6), valve cabinet (7), two faceted pebble valve block (8), valve seat (10) to promote piston (12) and make stroke movement, ratchet during stroke (13) is promoted by the helicla flute on the piston rod, the flank of tooth jack-up ratchet (15) of ratchet (13), angle of ratchet (13) revolution, piston (a 12) moving linearly is until impacting drilling tool; In piston (12) stroke movement, cylinder body (11) back cavity volume reduces gradually, gas is compressed, when piston (12) moves to cylinder body (11) ante-chamber and cylinder body exhaust outlet (22) connection, because suction function makes two faceted pebble valve blocks (8) go up the passage of swing cut-out to the ante-chamber air feed at valve seat (10), the passage of opening to the back cavity air feed begins to the back cavity air feed; Piston (12) begins drawback movement in the effect of inertia down stroke then until impacting drilling tool, ratchet during backhaul (13) is propped up and can not rotate by ratchet (15), force piston (12) along angle of helicla flute revolution, thereby drive angle of the corresponding rotation of turning set (17), turning set (17) drives drilling tool and rotates, thereby realize changeing the pricker motion, in piston (12) drawback movement, preceding cavity volume reduces gradually, gas is compressed, when piston (12) moves to cylinder body (11) back cavity and cylinder body exhaust outlet (22) when communicating, because suction function makes two faceted pebble valve blocks (8) go up swing at valve seat (10), cut-out is to the passage of back cavity air feed, the passage of opening to the ante-chamber air feed begins to the ante-chamber air feed, piston (12) under effect of inertia, continue drawback movement until the second time stroke movement begin, the motion that goes round and begins again like this makes on the processed structure is dug out eyelet.

Claims

1. hand-held pneumatic rock drill, comprise body with handle body and the rubber shock-absorbing handgrip that is connected on the handle body, be provided with reinforcement in the described rubber shock-absorbing handgrip, described body is provided with tracheae from top to bottom successively, the distributing valve group, cylinder, be located at reciprocating-piston and head in the cylinder in order to beat drill steel, the piston rod outer surface of described reciprocating-piston is provided with helical form keyway and linearity keyway, it is characterized in that, be provided with the ratchet that is placed in the piston rod periphery in the described head, ratchet and turning set, the length of action of described ratchet and ratchet and ratchet longitudinal length, ratchet external tooth equal in length, the be fixedly connected driving key of the linearity keyway that is bumped into piston rod surface of the be fixedly connected driving key of the helical form keyway that is bumped into piston rod surface of described ratchet inwall, the colored lock tube inwall in the described turning set.

2. hand-held pneumatic rock drill according to claim 1 is characterized in that, described head is inner to be adopted two layers and empty setting, makes between ratchet periphery and the head inwall cavity bigger, reduces the compressed air resistance of generation in the piston stroke motion.

3. hand-held pneumatic rock drill according to claim 1, it is characterized in that the union end that the cylinder at described body middle part is placed in the head adopts big planar projections setting, make between cylinder and head cooperate more firm, the vibrations of minimizing when body is worked reduce the body wearing and tearing.