CN2455776Y

CN2455776Y - Walling device for three rod stirring piling apparatus

Info

Publication number: CN2455776Y
Application number: CN 00266426
Authority: CN
Inventors: 陈腊根; 董建军
Original assignee: WUHAN ENGINEERING MACHINERY INST MINISTRY OF RAILWAY
Current assignee: WUHAN ENGINEERING MACHINERY INST MINISTRY OF RAILWAY
Priority date: 2000-12-28
Filing date: 2000-12-28
Publication date: 2001-10-24
Anticipated expiration: 2010-12-28

Abstract

The utility model relates to a walling device for a three drill rod stirring pile machine, which has the structure that three hollow drive shafts of the walling device are driven by three hollow drill rods, the drive shafts respectively form transmission connections with three lateral solid driven shafts through chain wheel driving devices, the lower ends of the drive shafts are provided with hollow drill heads, the lower ends of the driven shafts are totally provided with solid drill heads, and the outer surfaces of the drill heads are welded with leaf blades; the outer surfaces of the six driving shafts and three sets of the chain wheel driving devices are provided with a shell body, and bearings are arranged between the shell body and each driving shaft. After cement slurry passes through slurry feeding pipes, the drill rods, and the drive shafts by a slurry pump, the cement slurry is sprayed into undisturbed soil by slurry spraying holes which are arranged on the lower ends of the drill heads of the drive shafts, and a section of continuous cement earth wall can be formed into through sufficient stir by all the drill heads.

Description

The wall forming device that is used for three boring bar mixing pile machines

The utility model relates to a kind of wall forming device that is used for three boring bar mixing pile machines, and it belongs to the employed mixing pile machine device of diaphragm wall engineering in the civil construction field.

In the prior art, the routine of this kind stake machine constitutes: in the lower end of its three drilling rods a drill bit is installed respectively and is operated, when the stake machine bores down and promotes, cement paste injects soil by the top of the drilling rod spray orifice by drill bit that each drilling rod is installed, the bit blades of rotation fully stirs three cement earth piles of formation with cement paste and undisturbed soil, inserts three new stakes through repetitive operation between three Manufactured three piles last time; And the diaphragm wall of formation cement earth pile.Use the shortcoming of this kind device system stake one-tenth wall to be: the made stake in twice of front and back exist the ground lower bifurcation may, concerning the exigent diaphragm wall of sealing antiseepage, can not guarantee that its matter is.If adopt the enlarged diameter of three drill bits, make the overlapping method once of blade make wall, then increased the thickness that becomes wall, the cost of making wall is increased, also to increase the power of a machine simultaneously.In addition, this conventional device is owing to front and back pile employing repetitive operation in use, and it is also more to expend man-hour.

The purpose of this utility model is: a kind of wall forming device that is used for three boring bar mixing pile machines is provided, it be installed in existing three boring bar mixing pile machines below, because six drill bits that wall forming device is equipped with use simultaneously, its blade misplaces up and down and can not interfere with each other, the drill bit stirring area overlaps each other again, but the cement soil wall that once-forming is continuous, thus a large amount of man-hours saved, reduced construction cost.

The technical solution of the utility model is: the wall forming device that is used for three boring bar mixing pile machines comprises three hollow drilling rods, be equipped with by three of its driving hollow driving shafts its lower end, three driving shafts by sprocket wheel and chain respectively with three of its side solid driven axle driving coupling; Drill bit respectively is equipped with in lower end at three driving shafts and three velamen moving axis, and the drill bit of driving shaft is a hollow, and its lower end is provided with gunniting hole; The drill bit of driven axle is solid, is welded with blade on the external surface of drill bit; Outside at three driving shafts and three velamen moving axis and three cover chain and sprocket driving devices is provided with housing, between this housing and described each power transmission shaft bearing is housed; The also available gear drive of described chain and sprocket driving device replaces.Can be three by three driving shafts by the driven axle that chain passes the device driving, also can be two or four, and under the situation that two velamen moving axis are housed, it is between three driving shafts; Under the situation that four velamen moving axis are housed, two velamen moving axis are positioned at the outside of both sides driving shaft in addition.

Advantage of the present utility model is:

1, uses in the time of owing to six drill bits, its blade misplaces up and down and can not interfere with each other, and its stirring area overlaps each other again, can not produce the problem of the pile body of appearance in the prior art at the ground lower bifurcation, guarantee the high-quality of diaphragm wall, reached the requirement of sealing antiseepage.

2, because the body of wall once-forming need not repeat construction at one section body of wall place, reduced cost.

3, as long as the utility model is directly installed on existing three boring bar mixing pile machines and can constructs, make full use of existing equipment, made unit in charge of construction both use existing equipment, saved fund again.

In conjunction with the accompanying drawings the utility model is elaborated with regard to an embodiment below:

Fig. 1 is the construction principle schematic that three boring bar mixing pile machines of the present utility model are housed;

Fig. 2 is the schematic side view of Fig. 1;

Fig. 3 is a structural representation of the present utility model.

As depicted in figs. 1 and 2, one is equipped with three boring bar mixing pile machines of the present utility model and mainly comprises head rig 1, three hollow drills 2, headstock 3, three rotating disks 4, slush pumps 5 and send slurry pipe 6.Six drill bit wall forming devices 7 are housed below three drilling rods 2, this wall forming device 7 below be provided with six drill bits 8 and 8 ', be provided with gunniting hole 9 in the end of drill bit 8, be welded with blade 9 ' at the external surface of drill bit.If diaphragm wall extends to the A direction, promptly this machine moves to the A direction after each process cycles is finished, can see, and be cement soil continuous wall 10 in the place that three boring bar mixing pile machines were constructed, be undisturbed soil 11 in the place of not constructing as yet.

As shown in Figure 3, six drill bit wall forming devices 7 be installed in three drilling rods 2 below, it is provided with sprocket wheel 13 and the chain 14 of 12, three driving shafts 12 of hollow driving shaft by being contained in this that three drilling rods 2 drive, and drives three solid driven axles 15 that are positioned at its side respectively; Solid drill bit 8 is equipped with the drill bit 8 of hollow is housed in the lower end of three driving shafts 12, and the lower end of three velamen moving axis 15 respectively; The drill bit of installing on driven axle 15 8 ' has only agitating function, does not transmit cement paste; Outside in described six roots of sensation

power transmission shaft

12 and 15 and three cover chain and

sprocket driving devices

13 and 14 is provided with housing 16, it has increased the integral rigidity of wall forming device on the one hand, on the other hand, bearing 17 and 18 supportings as each drill bit 8 and 8 ' are housed between housing 16 and each power transmission shaft 12 and 15.Described chain and sprocket driving device also can replace with gear drive.The driven axle 15 that is driven by three driving shafts 12 also can be two or four, and under the situation that two velamen moving axis are housed, it is between three driving shafts; Under the situation that four velamen moving axis are housed, two velamen moving axis are positioned at the outside of both sides driving shaft in addition.

When the stake machine bores down and promotes, cement paste enters three hollow drilling rods 2 and hollow driving shaft 12 by slush pump 5 through sending slurry pipe 6, and the drill bit 8 of hollow, spray in the undisturbed soil 11 by the gunniting hole on the drill bit 89, at this moment, six drill bits 8 and 8 ' stir simultaneously, make the abundant stirring in the zone of each drill bit 8 and 8 ' of cement paste and undisturbed soil 11, can form one section continuous cement soil wall.After the first time, process cycles was finished, move the stake machine and make the starter hole position of process cycles for the second time overlapping, so that diaphragm wall constantly extends by predetermined design with the position, hole, position, end of process cycles for the first time.

Claims

1. wall forming device that is used for three boring bar mixing pile machines is characterized in that:

The three hollow driving shafts (12) that driven by drilling rod (2) are housed in the lower end of described three hollow drilling rods (2), three driving shafts (12) by sprocket wheel (13) chain (14) respectively with three of its side solid driven axles (15) driving coupling, the drill bit (8) of hollow is installed in the lower end of three driving shafts (13), its lower end is provided with gunniting hole (9), in the lower end of three velamen moving axis (15) solid drill bit (8 ') is installed, external surface at drill bit (8,8 ') is welded with blade (9 '); Outside at described six roots of sensation power transmission shaft (12,15) and three groups of chain and sprocket driving devices (13,14) is provided with housing (16), between housing (16) and described each power transmission shaft (12,15) bearing (17) and (18) is housed.

2. according to claims 1 described wall forming device that is used for three boring bar mixing pile machines, it is characterized in that:

The described chain and sprocket driving device of being made up of sprocket wheel (13) and chain (14) also can be a gear drive.

3. according to the described wall forming device that is used for three boring bar mixing pile machines of claim 1, it is characterized in that:

Also can be two or four by three driving shafts (12) by the driven axle (15) that sprocket transmission device drives.