KR101894869B1 - A ground stirring device in which a hollow shaft motor and a stirring load are provided coaxially. - Google Patents

Abstract

The present invention relates to a ground stirring device in which a hollow shaft motor and a stirring rod are coaxially provided. More specifically, since the hollow shaft motor and the stirring rod are coaxially provided, the size and overall weight of the device can be reduced. A vibration preventing unit is formed between a driving shaft and a supply pipe to prevent shaking during driving. A rod joint is formed in a spline shape to facilitate coupling, and rotating force can be smoothly transferred to the stirring rod. Since the hollow shaft motor and the stirring rod are coaxially installed, the entire volume and weight may be reduced as compared with the other ground stirring device even though several stirring rods are coupled. The present invention has a weight lighter than that of the existing ground stirring device, and can be used while being stably installed even when being installed and used in a high place of an excavation auger machine. In addition, the present invention has a vibration preventing unit between the driving shaft and the supply pipe to rapidly supply an injection material such as cement foam to the lower part even while the supply pipe rotates.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a ground stirring device in which a hollow shaft motor and a stirring rod are provided coaxially.

The present invention relates to a ground stirring apparatus in which a hollow shaft motor and a stirring rod are provided on a coaxial axis, and more specifically, a hollow shaft motor and a stirring rod are provided on a coaxial axis to reduce the size and overall weight of the apparatus, A hollow shaft motor which can prevent shaking during driving and which is configured in the form of a spline so that it can be easily coupled and smoothly transmits the rotation force to the stirring rod, To a ground stirring device provided on a coaxial phase.

Generally, when the roads and buildings are constructed on the soft ground of soft and compressible clay and soft soil made of silt and peat, it is necessary to strengthen or stabilize the soft ground directly or indirectly in order to prevent the ground from breaking or consolidation settlement. A variety of soft ground improvement methods are used. In the soft ground improvement method, excavation of soft ground is carried out using excavated auger machine, and cement foam is injected into the soil layer of the ground or cement foam and chemicals such as quick- And then hardening it by stirring with the ground.

In the case of the excavated auger machine used in the above method, a stirring rod such as a single shaft, a double shaft or a four shaft is coupled to a ground stirring apparatus.

As a prior art of the ground stirrer, a planetary gear reducer is coupled to a motor and a lower portion thereof such that the rotational force of the motor is reduced by the planetary gear reducer and the stirring rod is rotated, as in Korean Patent Registration No. 10-1576971 .

The ground stirrer has a structure in which a motor is coupled to one side of an upper portion of a planetary gear reducer to transmit a rotational force to the planetary gear reducer. As the number of the stirring rods increases, the volume increases.

Also, in Korean Patent Registration No. 10-1055694, a ground stirring apparatus composed of one stirring rod is connected to an agitating rod so that a decelerated rotating force can be transmitted by an upper joint and a planetary gear reducer, And the upper and lower joints are formed at the center of the upper and lower joints. However, since the rotational force of the upper joint and the lower joint is different from each other, the injection material such as cement foam can not be smoothly supplied to the lower portion There has been a problem that a phenomenon occurs.

KR 10-1576971 B1 2015.12.11. KR 10-2011-0112887 Oct 14, 2011.

Accordingly, the present invention has been developed in order to solve the problems of the conventional soil stirring apparatus. In the present invention, the motor and the stirring rod can be installed on the coaxial axis, so that the volume and size of the soil stirring apparatus can be minimized Thereby providing a ground stirrer.

It is still another object of the present invention to provide a ground stirring apparatus in which a supply passage through which an injection is supplied is rotated in the same rotational direction as a stirring rod.

In order to achieve the above object, according to one aspect of the present invention, there is provided a soil stirring apparatus for elevating and lowering along a leader installed forward of a car having a frequently function, the soil stirring apparatus comprising: A hollow shaft motor that forms a first hollow in the center of the interior, a base on the bottom, and a rotary shaft in the middle of the bottom; A planetary gear reducer installed in the base and configured to form a second hollow at the center and to be installed on the drive shaft to reduce the rotational force of the hollow shaft motor; A drive shaft installed at a lower portion of the planetary gear reducer and having a through hole at the center of the drive shaft; A feed pipe fixed to an end of the through hole; And a rod joint coupled to the lower end of the drive shaft so as to be coupled with the stirring rod.

Further, in the present invention, the planetary gear reducer is composed of a first planetary gear group and a second planetary gear group.

In the present invention, a coupling portion is formed in the form of a spline so as to be inserted into the rod joint at a lower end of the driving shaft, a first pin insertion groove is formed at both sides of the coupling portion to insert a fixing pin, A coupling hole is formed at the center so as to correspond to the coupling portion of the drive shaft and a pin coupling hole into which the fixing pin is inserted so as to be fixedly installed on both sides of the upper portion is formed and a connecting portion is formed And a second pin insertion groove into which the fixing pin is inserted is formed on both sides of the connection portion so that the stirring rod can be fixedly installed.

In the present invention, since the hollow shaft motor and the agitating rod are provided coaxially with each other in the ground stirring apparatus, the overall volume and weight of the apparatus can be reduced.

In addition, in the present invention, a vibration chamber is formed between the drive shaft and the supply pipe, thereby preventing the supply pipe from being shaken or tilted during rotation.

In addition, since the supply pipe of the present invention is provided with the same rotational force as the rotational force of the stirring rod, the injected material smoothly moves downward without clogging, thereby providing stirring effect.

In the present invention, the rod joint is configured in the form of a spline so that it can be quickly separated and replaced with the drive shaft, and is firmly coupled to the stirring rod, thereby providing an effect that the rotational force can be smoothly transmitted to the stirring rod.

1 is a front view showing an example of an excavation auger machine to which the ground stirrer provided in the present invention is applied;
2 is a front view of the ground stirring apparatus provided in the present invention;
3 is a sectional view of the ground stirring apparatus provided in the present invention
4 is a perspective view showing the structure of the rod joint;
5 is a cross-
6 is a sectional view showing another embodiment of the ground stirring apparatus provided in the present invention

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. Of course, it should be understood that the described embodiments are merely preferred embodiments of the present invention, not all embodiments. In accordance with an embodiment of the present invention, all other embodiments that an ordinary artisan in the art has acquired without creative labor are all within the scope of the present invention.

Hereinafter, the structure of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a front view showing an embodiment of a digging auger machine to which the ground stirring apparatus provided in the present invention is applied.

1, the excavating auger machine 100 includes a reader 120 installed in front of a body 110 having a self-running function and a ground stirrer 200 installed in the reader 120 And the elevation wire 122 connected to the ground 120 through the guide roller 121 installed at the upper end of the reader 120 in the vehicle body 110 is connected to the ground stirrer 200 so that the ground stirrer 200 is connected to the reader 120 The ground stirrer 200 includes a hollow shaft motor 210 and a planetary gear reducer 310. A stirring rod 130 is disposed below the ground stirrer 200 It is installed so that the ground can be drilled.

FIG. 2 is a front view of the ground stirrer 200 provided in the present invention, and FIG. 3 is a sectional view of the ground stirrer provided in the present invention,

The ground stirrer 200 includes a hollow hollow shaft motor 210 and a planetary gear reducer 310 installed inside the base 300 to reduce the rotational force of the hollow shaft motor 210.

A rod joint 600 is formed at the lower end of the ground stirrer 200 so as to be coupled with the stirring rod 130 to be driven.

The hollow shaft motor 210 includes a swivel 211 installed at the center of an upper portion of the hollow shaft motor 210 that is supplied with cement foam, water, pneumatic pressure, medicines, And a planetary gear reducer 310 is mounted on the lower surface of the base body 300. A rotary shaft 213 is disposed at the center of the lower portion of the base body 300, .

The planetary gear reducer 310 is capable of reducing the speed at which the motor rotates at a high speed (1600 revolutions per minute) at a low speed (10 to 20 revolutions per minute). The planetary gear reducer 310 includes a central sun gear, A plurality of planetary gears, and a ring gear disposed at the outer periphery of the planetary gears. In the present invention, the first and second planetary gears 320 and 330 are provided, The second hollow 311 is formed so that the second hollow 311 can be penetrated.

A driving shaft 400 is formed below the second group of the planetary gears 320 so that a reduced rotational force can be transmitted to the stirring rod 130.

A rod joint 600 is formed at the lower end of the drive shaft 400 so as to be coupled to the stirring rod 130. A through hole 410 is formed in the center of the drive shaft 400 to allow the supply pipe 500 to be inserted and fixed. do.

A feed pipe 500 is fixed to an end of the through hole 410.

Fig. 4 is a perspective view showing a structure of a rod joint, and Fig. 5 is a sectional view of Fig.

4 shows the structure of the rod joint 600. At the lower end of the drive shaft 400, a coupling part 420 is formed in the form of a spline so as to be inserted into the rod joint 600. [

First pin insertion grooves 421 are formed on both sides of the coupling portion 420 so that the fixing pin 800 can be inserted.

The rod joint 600 has an insertion hole 610 in the form of a spline so as to correspond to the coupling part 420 of the driving shaft 400 at the center of the inside thereof, A pin coupling hole 611 into which the fixing pin 800 is inserted is formed and a connecting portion 612 is formed in the lower portion so that the stirring rod 130 can be inserted.

The present invention is completed by forming second pin insertion grooves 613 through which the fixing pins 800 are inserted so that the stirring rod 130 can be fixedly installed on both sides of the connecting portion 612. [

6 is a sectional view showing another embodiment of the ground stirring apparatus provided in the present invention.

6 is a view showing a state in which a space S is formed between the supply pipe 500 and the drive shaft 400 to prevent the vibration during driving. 500 and the second hollow 311 of the planetary gear reducer 310 and the first hollow 212 of the hollow shaft motor 210, The example is completed.

It should be noted that the ground stirrer can be used in combination with one, two or four axes of stirring rods 130, and various changes and modifications can be made without departing from the technical spirit of the present invention. They will understand well.

Since the hollow shaft motor 210 and the stirring rod 130 are provided coaxially with each other in the ground stirring device 200 constructed as described above, even when a plurality of stirring rods 130 are combined, The weight and weight of the excavation auger machine 100 can be reduced and the weight of the excavator auger machine 100 is lighter than that of the conventional ground stirrer 200 so that the excavator can be used in a stably installed state even if it is installed at a high place.

In addition, a vibration chamber 700 may be formed between the drive shaft 400 and the supply pipe 500 so that the supply pipe 500 can be rapidly supplied to the lower part such as cement foam without shaking even when the supply pipe 500 is rotated. At this time, the trembling zone 700 may be a rubber ring type or the like.

Since the supply pipe 500 according to the present invention is coupled to the drive shaft 400, the injected material is smoothly transferred to the lower portion to be agitated because it rotates at the same decelerated rotational force.

In the present invention, the rod joint 600 is configured in the form of a spline so that it can be quickly separated and replaced with the drive shaft 400, thereby providing convenience of operation.

The foregoing is merely a preferred embodiment formed by slight improvements of the present invention and is not intended to limit the present invention in any way, and any equivalent or equivalent changes made to the improvements of the present invention, or combinations not shown here, And should be included within the scope of protection of the present invention.

100: excavated auger machine 110: car body
120: Reader 121: Guide roller
122: lift wire 130: stir rod
200: ground stirrer
210: Hollow shaft motor 211: Swivel
212: first hollow 213: rotating shaft
300: gas 310: planetary gear reducer
311: Second hollow 320: First planetary group
330: The Second Planetary Group
400: drive shaft
410: through hole 420:
421: first pin insertion groove
500: supply pipe
600: Rod joint 610: Insertion hole
611: pin coupling hole 612:
613: Second pin insertion groove 700: Shaking room earth
800: Fixing pin S: Space

Claims (5)

A ground stirring apparatus (200) configured to be lifted and lowered along a leader (120) installed forward of a vehicle body having a function frequently;
A swivel (211) is formed at the upper part of the ground stirring device (200) so that the injected material can be supplied to the center of the upper part, a first hollow (212) is formed at the center of the interior, 300, and a hollow shaft motor 210 having a rotation shaft 213 formed at a center of a lower portion thereof;
A planetary gear reducer which is installed in the base 300 and has a second hollow 311 at the center thereof and is installed on the driving shaft 400 to reduce the rotational force of the hollow shaft motor 210 310;
A drive shaft 400 installed at a lower portion of the planetary gear reducer 310 and having a through hole 410 at the center thereof;
A supply pipe 500 fixed to an end of the through hole 410;
A rod joint 600 coupled to a lower end of the driving shaft 400 so as to be coupled with the stirring rod 130,
A coupling part 420 is formed at the lower end of the driving shaft 400 in the form of a spline so as to be inserted into the rod joint 600;
First pin insertion grooves 421 are formed on both sides of the coupling part 420 to insert the fixing pins 800 therein.
The rod joint 600 has an insertion hole 610 corresponding to the coupling portion 420 of the drive shaft 400 at the center of the inside of the rod joint 600, A pin coupling hole 611 into which the stirring rod 800 is inserted is formed and a connecting portion 612 is formed in the lower portion so that the stirring rod 130 can be inserted therein;
A second pin insertion groove 613 into which the fixing pin 800 is inserted is formed on both sides of the connection portion 612 so that the stirring rod 130 can be fixedly installed,
One between the supply pipe 500 and the drive shaft 400 or between the supply pipe 500 and the second hollow 311 of the planetary gear reducer 310 and the first hollow 212 of the hollow shaft motor 210 Wherein the hollow shaft motor and the stirring rod are provided coaxially with each other. delete delete delete The method according to claim 1,
Wherein the stirring shaft (130) is combined with a single shaft, a double shaft or a four shaft, and the stirring shaft is provided on the coaxial shaft.

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