JP2003275563A - Soil agitating apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a soil agitating apparatus constituted so as to facilitate disassembly and facilitate the repair of component exchange or the like. <P>SOLUTION: A plurality of rotary shafts 4 having agitation blades 4a on the periphery are arranged side by side, and soil and a modifier are fed from one end side of the rotary shafts, mixed and discharged from the other end side. The rotary shafts 4 and drive shafts 18 corresponding to the respective rotary shafts 4 are freely attachably and detachably connected by the connection of flanges 27 and 30 inside the frame 3 of the soil agitating apparatus. Also, a multiple shaft linking device 16 is made into a unit and freely attachably and detachably attached to the frame 3. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soil and sand agitation device for a soil improvement machine for improving the soil quality by adding an agitating agent to the earth and sand and agitating and mixing the soil and reusing it.

[0002]

2. Description of the Related Art For example, in the construction of gas pipes and water and sewerage pipes, road construction, and foundation construction, the earth and sand produced by excavation cannot be reused as they are because of their particle size and water content. Therefore, by adding an improver such as lime or cement to the generated sand and mixing it, the particle size and water content can be adjusted and reused. The applicant of the present invention has disclosed such a soil improvement machine as disclosed in, for example, Japanese Patent Laid-Open No. 2000-4526
No. 3, Japanese Patent Laid-Open No. 2000-104243, and the like.

In such a soil conditioner, the earth and sand agitating device is provided with a plurality of bearings at both ends of a quadrangular frame, and both ends of an agitating rotary shaft are inserted between the bearings to support the bearings. A gear for interlocking a plurality of rotating shafts is attached to the tip of the shaft, and the rotational force of a motor provided at one end of the frame is transmitted to the plurality of rotating shafts by the gears so as to be interlocked with each other. It has a structure in which earth and sand and an improving agent are charged from the side, stirred and mixed, and discharged from the other end side.

[0004]

In the earth and sand agitating device, when the bearing is damaged due to wear or damage of the seal material for preventing intrusion of sand in the bearing due to invading earth and sand, in the conventional device, the above-mentioned interlocking device is used. Unless the gears are removed and the rotating shaft is completely removed from the frame, bearing parts cannot be replaced. For this reason, there is a problem that the disassembling work becomes large-scale and the repair requires a transportation cost and a time.

Further, since the agitating earth and sand have a structure in which they directly contact the bearing, there is a problem that the sealing material is easily damaged.

In view of the above problems, it is an object of the present invention to provide an earth and sand agitating device which is easy to disassemble and easy to repair such as parts replacement. Another object of the present invention is to provide an earth and sand agitating device having a structure in which the intrusion of earth and sand into the bearing of the rotating shaft for agitation does not easily occur.

[0007]

Means for Solving the Problems The earth and sand agitating device of the present invention has a plurality of rotary shafts having an agitating means arranged side by side,
In the earth and sand stirring device of a soil improvement machine for improving soil quality by adding and mixing earth and sand and an improving agent from one end side of the rotating shaft and discharging from the other end side, the rotating shaft and the rotating shafts correspond to each other. It is characterized in that the drive shaft is detachably coupled with a flange or the like in the frame of the earth and sand stirring device.

As described above, if the rotary shaft and the drive shaft are detachably connected to each other in the frame of the earth and sand stirring device by flange connection or the like, when the bearing or the like on the drive device side is damaged, the rotary shaft side Can be easily separated, and repairs such as parts replacement can be performed on site. Further, the flange portion also plays a role of suppressing the arrival of earth and sand on the drive side such as the bearing, and can reduce the influence of earth and sand on the bearing and the like.

In the present invention, not only the structure for connecting the rotating shaft and the drive shaft, but also a partition wall for earth and sand installed in the frame of the earth and sand stirring device in a direction intersecting with the rotating shaft is provided near the drive device. As a result, the influence of the earth and sand on the bearing on the drive unit side can be further reduced.

Further, when the partition wall is provided, the rotary shaft is inserted through a hole provided in the partition wall, the rotary shaft and the drive shaft are flange-coupled, and the hole is closed by the flange. As a result, the influence of the earth and sand on the bearing on the drive unit side can be further reduced.

Further, a space is provided between the partition wall and the bearing of the drive shaft, and a discharge port for dropping earth and sand is provided below the space, so that the earth and sand mixed with the improving agent can be removed. Since it falls before the bearing of the drive unit, it is possible to more completely prevent the influence of the earth and sand on the bearing on the drive unit side.

Further, in the present invention, the drive shafts of the rotary shafts are supported by bearings provided in an integral block, respectively, and a plurality of gears that are adjacent to the drive shafts engage with each other to form a unit. A shaft interlocking device is configured, and a rotational force applied to at least one of the plurality of gears by at least one motor attached to a frame of the earth and sand stirring device is transmitted to all drive shafts through the gears. When the bearings and the like are exchanged by adopting a structure in which the multi-axis interlocking device is detachably attached to the frame of the earth and sand stirring device, the multi-axis interlocking device can be completely separated from the earth and sand stirring device for repair. Therefore, repair work such as part replacement can be performed more easily on site.

Further, in the present invention, when the frame of the earth and sand agitating device is combined by bolting the channel material, the earth and sand agitating device can be easily cleaned and disassembled as compared with the conventional box type structure. Becomes

Further, in the present invention, if the inclination angle of the frame of the earth and sand agitating device in the earth and sand flow direction is adjustable, by adjusting the inclination angle, the mixing speed of the soil improving agent can be adjusted according to the soil quality. In the case of earth and sand that requires a relatively small amount of improving agent to be added, the work can be efficiently performed by increasing the inclination angle and allowing the earth and sand to flow faster. Further, as compared with the case where the rotation of the rotary shaft is changed, wear of the stirring means such as the rotary shaft and the stirring blade can be reduced.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a side view showing an embodiment of the earth and sand agitation device according to the present invention, and FIGS. 2 and 3 are E arrow view, F arrow view and FIG. ) Is a sectional view taken along line GG in FIG. 1, FIGS. 5 and 6 are plan views and bottom views of the earth and sand stirring device of the present embodiment, respectively. FIG. 7 is a plan view showing the earth and sand stirring device with its top cover removed. is there.

The earth and sand agitating device 1 may be installed on both sides of a self-propelled type, but in the present embodiment, it is shown that it is installed and installed. Two front columns 2a are shown.
Are supported by two columns, a rear column 2b, and two intermediate columns 2c. The frame 3 of the earth and sand agitating device 1 has a rectangular shape, and the both side frames 3a are formed by using a channel material. An end plate 3b is detachably coupled to one end of the end plate 3b with a bolt 10.
An end member 3c, which is a plate-shaped box-shaped member, is detachably coupled to the other end with bolts 11, and covers 3d and 3e are detachably fixed to the upper surface and the lower surface with bolts 12 and 13, respectively.

A plurality of (four in this example) agitating rotary shafts 4 are mounted in the frame 3, and each rotary shaft 4 has agitation blades 4a removably attached to the periphery thereof. . Reference numeral 5 is a rotary shaft drive motor detachably attached to the end plate 3b with a bolt 14, and reference numeral 6 is a rotary shaft support bearing detachably attached to the opposite side of the motor 5 with a bolt 15.

As shown in the plan view of FIG. 5, the upper surface of the end on the side of the bearing 6 on the frame 3 is provided with an inlet 7 for earth and sand formed by removing the cover 3d, and a improver having a circular shape. An inlet 8 is provided. As shown in FIG. 1, hoods 7a and 8a for introducing earth and sand and an improving agent are attached to the earth and sand introducing opening 7 and the inlet 8, respectively. As shown in FIG. 6, a part of the cover 3e is omitted on the side of the bottom surface of the frame 3 near the motor 5 to provide a discharge port 9 for discharging the sand after the stirring of the sand and the improving agent.

As shown in FIGS. 7 and 8, a multi-axis interlocking device 16 is detachably connected between the rotary shaft 4 and the motor 5 to both side frames 3a of the frame 3 with bolts 28 at both ends. Mounted.

FIG. 9 is a plan view of the multi-axis interlocking device 16,
FIG. 10 is a view of the multi-axis interlocking device 16 viewed from the motor 5 side,
11 (A) and 11 (B) are sectional views showing the mounting structure of the bearing and the gear, and FIG. 11 (C) is a state in which the drive shaft 18 and the rotary shaft 4 of the multi-shaft interlocking device 16 are mounted on the frame. It is the figure which looked at from the earth and sand introduction port 7 side. FIG. 11 (A),
As shown in (B), the steel block 17 of the multi-axis interlocking device 16 is provided with holes 17a as many as the number of the rotary shafts 4, and the bearings 19 of the drive shaft 18 can be detachably attached to the holes 17a by bolts 20. Set up. Bolts 2 at both ends of block 17
Screw hole 17b for screwing 8 to fix to the frame 3
(See FIGS. 8 and 9). A gear 23 is detachably attached to the end of the drive shaft 18 on the motor side by a retaining plate 21 and a bolt 22 for retaining the gear 23.

Further, as shown in FIGS. 7 and 11B,
One of the four is an extension portion 18a extending toward the motor 5 side.
The sprocket 24 for transmitting the rotational force from the motor 5 is attached to the end of the extending portion 18a so as to prevent the sprocket 24 and the gear 23 from coming off together with the gear 23. As shown in FIG. 9, the output shaft 5a of the motor 5
Is provided with a sprocket 25, and the sprocket 25 is provided with an extending portion 18 of one drive shaft 18 of the multi-spindle interlocking device 16.
The two shafts 5a and 18 are detachably coupled by hanging the double chain 26 on both sprockets 24 and 25 in abutment with the sprocket 24 provided on a. Reference numeral 19a is a seal material for the bearing 19.

As shown in FIGS. 11A to 11C, a flange 27 for flange coupling to the rotary shaft 4 is provided at the end of each drive shaft 18 on the earth and sand introduction port 7 side.
A hole 27a for connecting a bolt is provided in the. Then, a plurality of divided flanges 30 are fitted in a groove 29 provided in the vicinity of the end of the rotary shaft 4 in a rotation-preventing structure, and screw holes 30a (or nuts attached to the holes 30a) provided in the flanges 30 are provided.
By screwing a bolt 31 inserted into a hole 27a of the flange 27 of the drive shaft 18, the shafts 4 and 18 are detachably coupled.

As shown in FIGS. 6 and 7, a partition wall 33 is formed near the end of the rotary shaft 4 on the side of the motor 5 by a bolt 34 to prevent the sand mixed with the improving agent from entering the drive side. It is detachably attached between the side frames 3a. As shown in FIG. 6, the sediment discharge port 9 is formed over the entire width of the frame 3 on the sediment introduction port 7 side of the partition wall 33. In addition, a space 35 is formed between the drive shafts 18, and a sediment discharge port for discharging the soil leaked between the drive shafts 18 is provided in a lower portion of the drive shaft 18 and the flanges 27 and 30. 36 are provided.

As shown in FIG. 7, the end of each rotary shaft 4 is rotatably inserted into a hole 33a formed in the partition wall 33. Then, the flange 30 attached to the rotary shaft 4 is brought close to or in contact with the surface of the partition wall 33 on the motor 5 side to close the hole 33a with the flange 30 to prevent passage of earth and sand through the hole 33a.

As described above, with the structure in which the rotary shaft 4 and the drive shaft 18 are detachably coupled with the bolts 31 via the flanges 30 and 27, the seal material of the bearing 19 on the drive device side is damaged. In this case, the bearing 6 on the earth and sand inlet 7 side is removed by removing the bolt 15, and the upper and lower covers 3
The motor 5 and the gear 2 are removed by removing at least the parts d and 3e near the multi-axis interlocking device 16 and removing the partition wall 33.
It is possible to expose the portion of the bearing 19 and replace the sealing material and the like without removing the frame 3 and the like and without disassembling the frame 3.

Since the multi-axis interlocking device 16 is detachably attached to the frame 3, the multi-axis interlocking device 1
By completely removing 6 from the frame 3 or the output shaft 5a and taking it out, it is possible to replace parts in a workable state on site without removing the motor 5, the gear 23, or the like, and without disassembling the frame 3. Etc. can be repaired.

Further, the flanges 27 and 30 also serve to suppress the arrival of earth and sand on the drive side of the bearing 19 and the like, and can reduce the influence of earth and sand on the bearing 19 and the like.

Further, by providing the earth and sand stopping partition wall 33 installed in the direction intersecting with the rotary shaft 4 on the earth and sand inlet 7 side of the bearing 19, the influence of the earth and sand on the bearing 19 can be further reduced.

In the case where the partition wall is provided, as in the present embodiment, a flange for inserting the rotary shaft 4 into the hole 33a provided in the partition wall 33 and coupling the rotary shaft 4 and the drive shaft 18 together. The structure in which the hole 33a is closed by 30 can further reduce the influence of the earth and sand on the bearing 19 on the driving device side.

Further, a space 35 is provided between the partition wall 33 and the bearing 19 of the drive shaft 18, and the space 35 is provided.
By providing the structure in which the earth and sand discharge port 36 is provided below, the earth and sand mixed with the improving agent falls in front of the drive unit, so that the influence of the earth and sand on the bearing 19 on the drive unit side can be more completely prevented. it can.

Further, in this embodiment, since the channel material is used for the side frame 3a of the frame 3 and the structure is combined with the end plate 3b, the end member 3c and the like by the bolt connection, the conventional box type is used. Cleaning of the earth and sand agitation device becomes easier compared to the structure.

Further, in the present embodiment, as shown in FIGS. 1 to 6, the end portion of the frame 3 on the earth and sand introduction port 7 side,
The frame 4 projecting downward at the end of the outlet 9 side
0 and 41 are provided, mounting pipes 42 and 43 are attached to the frames 40 and 41, and the earth and sand introduction port 7 side pipe 42 is rotatably supported on the front support column 2a, and the discharge port 9 side pipe 43. Is configured to be vertically movable along the rear support column 2b, so that the inclination angle of the frame 3 from the earth and sand introduction side to the discharge side can be adjusted.

The pipe 43 is attached to the rear support column 2b as shown in FIGS. 4A and 4B by providing a plurality of mounting holes 45 in the vertical direction on the rear support column 2b and penetrating the mounting plate 46. By inserting the inserted bolt 47 into the selected one of the mounting holes 45 and screwing it into the nut 49,
A structure in which the vertical position of the mounting plate 46 is adjustable is fixed, the pipe 43 is placed on the horizontal plate 46a of the mounting plate 46, and the pipe is inserted into the long hole 46b formed in the horizontal plate 46a in the axial direction of the rotary shaft 4. U bolt 5 fitted to 43 from above
0 through the U-bolt 50 on the lower surface of the horizontal plate 46a.
The pipe 43 is fixed to the rear support column 2b by screwing and tightening the nut 51 on the threaded portion of the pipe. Reference numeral 46c is a fall prevention plate for the pipe 43 provided on the side of the attachment plate 46 opposite to the attachment portion to the rear column 2b.

With such a mounting structure, the inclination angle of the frame 3, that is, the earth and sand agitating device can be adjusted by changing the vertical mounting position of the mounting plate 46 with respect to the rear column 2b as shown in phantom in FIG. Becomes As a result, the inclination angles of the rotary shaft 4 and the lower cover 3e can be changed, and thus the passage speed of sediment from the sediment introduction port 7 to the sediment discharge port 9 can be changed. Therefore, it is possible to adjust the improving agent mixing treatment speed of the earth and sand depending on the soil quality, and in the case of earth and sand that requires a relatively small amount of the improving agent, by increasing the inclination angle and increasing the passing speed, You can work efficiently. Further, compared with the case where the rotation of the rotary shaft is changed, the rotation speed of the rotary shaft 4 need not be changed substantially, and the rotary shaft 4 does not need to be rotated at a high speed. Therefore, the stirring means such as the stirring blade 4a, the bearing 19 and the like. Wears little.

[0035]

According to the present invention, the rotary shaft is detachably connected to the drive shaft in the frame of the earth and sand agitating device, or the plural shaft interlocking device is unitized and detachably attached to the frame. , It is easy to disassemble and repair parts such as bearings is easy in the field, and the joint is flange joint or a partition wall is installed to prevent the invasion of earth and sand to the drive unit side. It becomes difficult for soil to enter the bearing of the rotary shaft for use, and damage to the bearing and the like due to soil can be prevented.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a soil agitation device of the present invention.

FIG. 2 is a view on arrow E of FIG.

FIG. 3 is a view on arrow F of FIG.

4A is a sectional view taken along the line GG in FIG. 1, and FIG. 4B is a partial sectional side view showing a structure for mounting a frame on a rear support.

FIG. 5 is a plan view of the earth and sand stirring device according to the present embodiment.

FIG. 6 is a bottom view of the earth and sand stirring device according to the present embodiment.

FIG. 7 is a plan view showing the earth and sand stirring device of the present embodiment with its top cover removed.

FIG. 8 is a view of the mounting structure of the multi-axis interlocking device of the present embodiment to the frame, as seen from the earth and sand inlet side.

FIG. 9 is a plan view of the multi-axis interlocking device of the present embodiment.

FIG. 10 is a diagram of the multi-axis interlocking device according to the present embodiment as viewed from the motor side.

11A and 11B are cross-sectional views showing a mounting structure of a drive side bearing and a gear according to the present embodiment, and FIG. 11C is a partial cross-sectional side view showing a connecting structure of a drive shaft and a rotary shaft. Is.

[Explanation of symbols]

1: Sediment stirring device, 2a: front support, 2b: rear support, 2
c: intermediate column, 3: frame, 3a: side frame, 3b: end plate, 3c: end member, 3d: upper cover, 3e: lower cover, 4: rotating shaft, 4a: stirring blade, 5: motor, 6 : Bearing, 7: Sediment inlet, 7a: Hood, 8: Improvement agent inlet, 8a: Hood, 9: Sediment outlet 10, 11, 1
2, 13, 14, 15: bolts, 16: multi-axis interlocking device, 17: bolts, 18: drive shaft, 19: bearing, 20:
Bolt, 21: retaining plate, 22: bolt, 23: gear, 24, 25: sprocket, 26: double chain, 27: flange, 29: groove, 30: divided shape flange, 31: bolt, 33: partition wall, 34 : Bolt, 35:
Space, 36: Sediment discharge port, 40, 41: Frame, 4
2, 43: pipe, 45: mounting hole, 46: mounting plate,
46a: horizontal plate, 46b: long hole, 47: U bolt, 4
9: Nut, 50: U bolt, 51: Nut

Front page continuation (51) Int.Cl. ⁷ Identification code FI theme code (reference) E02D 3/12 102 E02D 3/12 102 E02F 7/00 E02F 7/00 DF term (reference) 2D040 AB07 CD07 EB04 4G035 AB48 AE11 AE13 4G037 DA23 EA03 4G078 AA13 AB01 BA01 BA03 BA07 BA09 BA11 CA01 CA05 CA15 CA19 DA01 DB10 EA10

Claims (7)

[Claims] 1. A soil is provided by arranging a plurality of rotary shafts having a stirring means on the periphery, mixing and mixing the earth and sand and the improving agent from one end side of the rotating shafts, and discharging the soil from the other end side. The earth and sand stirring device of a soil improvement machine to be improved, wherein the rotary shaft and a drive shaft corresponding to each rotary shaft are detachably coupled in a frame of the sand and sand stirring device. 2. The earth and sand agitating device according to claim 1, further comprising a earth and sand stopping partition wall installed in the frame in a direction intersecting with the rotation axis. 3. The earth and sand agitating device according to claim 2, wherein the rotary shaft is inserted through a hole provided in the partition wall, and the rotary shaft and the drive shaft are flange-coupled to each other, and the hole is closed by the flange. A sand and sand agitator characterized in that 4. The earth and sand agitation device according to any one of claims 1 to 3, wherein a space is provided between the partition wall and the bearing of the drive shaft, and a discharge port for falling earth and sand is provided below the space. An earth and sand agitating device characterized by being provided with. 5. The earth and sand agitating device according to any one of claims 1 to 4, wherein the drive shafts of the rotary shafts are respectively supported by bearings provided in an integral block, and are adjacent to the drive shafts. A gear that meshes with each other is attached to form a unitized multi-axis interlocking device, and a rotational force applied to at least one of the plurality of gears by at least one motor attached to the frame of the earth and sand agitator. The earth and sand stirring device having a structure for transmitting to all drive shafts through the gears, wherein the multi-axis interlocking device is detachably attached to a frame of the earth and sand stirring device. 6. The earth and sand agitating device according to any one of claims 1 to 5, wherein a frame of the earth and sand agitating device is formed by bolting channel materials. 7. The earth and sand agitating device according to any one of claims 1 to 6, wherein an inclination angle of a frame of the earth and sand agitating device in the earth and sand flowing direction is adjustable.