CN102423857A

CN102423857A - Fastening structure suitable for steel pipe inner wall grooving machine

Info

Publication number: CN102423857A
Application number: CN2011103981829A
Authority: CN
Inventors: 李玉青
Original assignee: ZHEJIANG HUASHUN CHAIR CO Ltd
Current assignee: ZHEJIANG HUASHUN CHAIR CO Ltd
Priority date: 2011-12-05
Filing date: 2011-12-05
Publication date: 2012-04-25

Abstract

The invention relates to a steel pipe inner wall grooving machine, in particular to a fastening structure suitable for the steel pipe inner wall grooving machine. The technical scheme is that: the fastening structure suitable for the steel pipe inner wall grooving machine comprises a sleeve support, an outer sleeve which is rotationally connected to and axially fixed on the sleeve support and passes through two ends of the sleeve support, and an inner sleeve which is sleeved with the outer sleeve and passes through two ends of the outer sleeve; grooves which are axially distributed are formed on the inner wall of the outer sleeve; bulges matched with the grooves are formed on the outer wall of the inner sleeve; a plurality of claw fixing sheets are arranged at one end of the inner sleeve; the inner side face of each claw fixing sheet is arc; the internal diameter of a circle formed by the inner side faces of all the claw fixing sheets is the same as that of the inner sleeve; and the wall thickness of the claw fixing sheets which axially extend to the free ends of the claw fixing sheets along the joints of the claw fixing sheets and the inner sleeve is gradually increased. The steel pipe fastening mode is easy to operate, and the sleeves are difficult to damage.

Description

Be applicable to that the steel pipe inwall plays the fastening structure of scouring machine

Technical field

the present invention relates to the steel pipe inwall and play scouring machine, are applicable to that particularly the steel pipe inwall plays the fastening structure of scouring machine.

Background technology

steel pipe inwall of the prior art plays scouring machine when work, and the direct swelling of steel pipe is in the sleeve pipe by the drive motors driven rotary, however the mode complex operation of this fastening steel pipe and fragile sleeve pipe.

Summary of the invention

the purpose of this invention is to provide and are applicable to that the steel pipe inwall plays the fastening structure of scouring machine, and its fastening steel pipe mode is simple to operate, and are difficult for damaging sleeve pipe.

above-mentioned technical purpose of the present invention is achieved through following technical scheme: be applicable to that the steel pipe inwall plays the fastening structure of scouring machine, it comprise sleeve bearing, be rotationally connected and be axially fixed at sleeve bearing and run through the outer tube at sleeve bearing two ends, with the outer tube socket and pass the inner sleeve at outer tube two ends; Outer sleeve inner wall is provided with the groove of axial distribution, and the outer wall of inner sleeve is provided with the raised line that matches with groove; One end of inner sleeve has the solid sheet of multi-disc pawl, and the medial surface of the solid sheet of said pawl is arcuation, and the medial surface of the solid sheet of all pawls to form the internal diameter of circle identical with the internal diameter of inner sleeve; The wall thickness of the solid sheet of pawl extends axially the free end of consolidating sheet to pawl and is thickening shape gradually along the junction of the solid sheet of pawl and inner sleeve.

said outer sleeve inner wall is provided with the groove of axial distribution, and the outer wall of inner sleeve is provided with the raised line that matches with groove, makes outer tube and inner sleeve can realize axial displacement between the two, but can not produce relative rotation; After inserting inner sleeve to steel pipe; The pulling inner sleeve; Because extending axially along the junction of the solid sheet of pawl and inner sleeve to the free end of the solid sheet of pawl, the wall thickness of the solid sheet of pawl is thickening shape gradually, thereby and make the solid sheet of pawl owing to receive the pressure of outer sleeve inner wall and inwardly draw in, thus make the pawl fixing steel pipe of sheet admittedly; After machining, as long as with the inner sleeve pushed home, can unload steel pipe, simple to operate, and easy damaged sleeve pipe not.

as of the present invention preferred, said inner sleeve one end is installed with spacing collar, be provided with between spacing collar and the outer tube and be placed in the outer draw ring of inner sleeve, and a side of draw ring is hinged with the support column that is fixed on the sleeve bearing.

pulling draw ring is conflicted draw ring and spacing collar, and spacing collar drive inner sleeve is moved, thereby and realizes the solid sheet of pawl owing to receive the inwardly gathering of pressure of outer sleeve inner wall.

also are installed with pull bar as of the present invention preferred on the said draw ring.

The setting of pull bar is for the ease of the pulling draw ring.

in sum, the present invention has following beneficial effect: the present invention is simple in structure, and is easy to implement, and simple to operate, also easy damaged sleeve pipe not.

Description of drawings

Fig. 1 is the example structure sketch map;

Fig. 2 is the solid sheet cutaway view of pawl;

Fig. 3 is the outer tube cutaway view;

Fig. 4 is the inner sleeve cutaway view.

Among figure, 1, sleeve bearing, 11, support column, 21, outer tube, 211, groove, 22, inner sleeve, 221, raised line, 222, the solid sheet of pawl, 223, spacing collar, 224, draw ring, 225, pull bar.

The specific embodiment

are done further explain below in conjunction with accompanying drawing to the present invention.

this specific embodiment only is to explanation of the present invention; It is not a limitation of the present invention; Those skilled in the art can make the modification that does not have creative contribution to present embodiment as required after reading this specification, but as long as in claim scope of the present invention, all receive the protection of Patent Law.

embodiment: shown in Fig. 1 to 4; Be applicable to that the steel pipe inwall plays the fastening structure of scouring machine, comprise sleeve bearing 1, be rotationally connected and be axially fixed at sleeve bearing 1 and run through the outer tube 21 at sleeve bearing 1 two ends, with outer tube 21 sockets and pass the inner sleeve 22 at outer tube 21 two ends; Outer tube 21 inwalls are provided with the groove 211 of axial distribution, and the outer wall of inner sleeve 22 is provided with the raised line 221 that matches with groove 211; One end of inner sleeve 22 has the solid sheet 222 of multi-disc pawl, and the medial surface of the solid sheet 222 of pawl is arcuation, and the medial surface of the solid sheet 222 of all pawls to form the internal diameter of circle identical with the internal diameter of inner sleeve 22; The wall thickness of the solid sheet 222 of pawl extends axially along the junction of the solid sheet 222 of pawl and inner sleeve 22 to the free end of the solid sheet 222 of pawl and is thickening shape gradually.

inner sleeve 22 1 ends are installed with spacing collar 223; Be provided with the draw ring 224 that is placed in outside the inner sleeve 22 between spacing collar 223 and the outer tube 21; And a side of draw ring 224 is hinged with the support column 11 that is fixed on the sleeve bearing 1, also is installed with pull bar 235 on the draw ring 224.

outer tube 21 inwalls are provided with the groove 211 of axial distribution; The outer wall of inner sleeve 22 is provided with the raised line 221 that matches with groove 211; Make outer tube 21 and inner sleeve 22 can realize axial displacement between the two, but can not produce relative rotation; Add man-hour; Steel pipe is inserted inner sleeve 22, pulling pull bar 225, and draw ring 224 and spacing collar 223 are conflicted; Continue pulling pull bar 225; Make spacing collar 223 drive inner sleeve 22 and move, thereby and make the solid sheet 222 of pawl owing to receive the inwardly gathering of pressure of outer tube 21 inwalls, thus make fixedly steel pipe of the solid sheet 222 of pawl; After machining, as long as with inner sleeve 22 pushed home, can unload steel pipe, simple to operate, and easy damaged sleeve pipe not.

Claims

1. be applicable to that the steel pipe inwall plays the fastening structure of scouring machine; It is characterized in that, it comprise sleeve bearing (1), be rotationally connected and be axially fixed at sleeve bearing (1) and run through the outer tube (21) at sleeve bearing (1) two ends, with outer tube (21) socket and pass the inner sleeve (22) at outer tube (21) two ends; Outer tube (21) inwall is provided with the groove (211) of axial distribution, and the outer wall of inner sleeve (22) is provided with the raised line (221) that matches with groove (211); One end of inner sleeve (22) has the solid sheet (222) of multi-disc pawl, and the medial surface of the solid sheet (222) of said pawl is arcuation, and the medial surface of the solid sheet (222) of all pawls to form the internal diameter of circle identical with the internal diameter of inner sleeve (22); The wall thickness of the solid sheet (222) of pawl extends axially along the junction of the solid sheet (222) of pawl and inner sleeve (22) to the free end of the solid sheet (222) of pawl and is thickening shape gradually.

2. the steel pipe inwall that is applicable to according to claim 1 plays the fastening structure of scouring machine; It is characterized in that; Said inner sleeve (22) one ends are installed with spacing collar (223); Be provided with between spacing collar (223) and the outer tube (21) and be placed in the outer draw ring (224) of inner sleeve (22), and a side of draw ring (224) is hinged with the support column (11) that is fixed on the sleeve bearing (1).

3. the steel pipe inwall that is applicable to according to claim 2 plays the fastening structure of scouring machine, it is characterized in that, also is installed with pull bar (225) on the said draw ring (224).