JP2010043514A - Back hoe, and solidifying material and excavated soil mixing-agitating apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a back hoe, and a solidifying material and excavated soil mixing-agitating highly convenient apparatus facilitating the mixing-agitating operation of a solidifying material and excavated soil while attaining cost reduction and miniaturization. <P>SOLUTION: The back hoe 1 rotating agitation blades provided at the tip of a boom by pressure oil supplied from a hydraulic tank to obtain excavated soil, includes the solidifying material and excavated soil mixing-agitating apparatus for mixing and agitating the excavated soil and the solidifying material to improve soil property. The back hoe 1 includes a mounting frame 12 integrally mounted with a hopper 2 charged with the solidifying material, an air compressor 4 force-feeding the solidifying material supplied into the hopper 2, by compressed air through a force-feed pipe 3, and a screw mixer 5 provided at an intermediate part of the force-feed pipe 3 to mix the solidifying material supplied into the hopper 2. The mounting frame 12 is constituted to be detachably mountable to a swivel base 9, and the pressure oil and the force-feed quantity can be controlled by hand operation in a driver's seat provided at an operating section 10 on the swivel base 9. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention provides a novel backhoe for improving soil quality such as soft ground by mixing and stirring excavated soil and solidified material obtained by rotating a stirring blade provided at the tip of a boom by pressure oil supplied from a hydraulic tank, and The present invention relates to a solidifying material / excavated soil mixing and stirring device.

As one of soil improvement work using backhoe (excavator), solidifying material for soil improvement is sprayed on the surface of soft ground beforehand, and soft ground etc. is excavated by backhoe bucket and solidified with excavated soil Work to improve the soil quality by mixing the materials.
However, in such conventional general soil improvement work, it is necessary to perform the work of spreading solidified material in advance on the surface of soft ground or the like, and as a result, time and labor are spent on the work of spreading and the efficiency is low. There's a problem.

In order to solve the problems of such conventional general soil improvement work, conventionally, as shown in Patent Document 1 below, supply of solidified material separately from a backhoe provided with a bucket provided with a drilling blade for excavating soft ground or the like A solidification material / excavated soil mixing and agitation facility has been proposed in which a device is provided and the solidification material is supplied by being compressed by compressed air from the solidification material supply device to the bucket of the backhoe via the solidification material supply pipe.
That is, a solidification material supply port is provided in the bucket, and the downstream end of the solidification material supply pipe is connected to the solidification material supply port, and the upstream end of the solidification material supply pipe is connected to the solidification material supply device, while the bucket is excavated. Provided with a stirring device to which a plurality of hollow stirring claws supporting a plurality of stirring claws for agitating the soil are attached, and downstream of the solidification material supply pipe to one stirring claw support via the solidification material supply port The ends are connected, and a solidified material discharge port is formed along the axis on the peripheral wall of the one stirring claw support shaft.
And when excavating soft ground etc. with a bucket, the solidification material is solidified material supply device → solidification material supply pipe → solidification material supply port of the bucket → the one stirring claw support shaft → the solidification formed on this support shaft. In addition to supplying the material discharge port to the bucket and stirring the excavated soil with a stirring claw in the bucket, the solidified material is quickly and uniformly mixed in the excavated soil to improve the soil quality.
Japanese Patent Laid-Open No. 5-346026

In the previously proposed solidification material and excavated soil mixing and agitation equipment disclosed in Patent Document 1, the solidification material can be reliably mixed into the excavated soil by performing excavation work only once. Therefore, soil quality improvement work can be performed efficiently.
However, the conventional solidified material / excavated soil mixing and agitation facility disclosed in Patent Document 1 is not only a solidified material supply device, but also an air compressor and a solidified material supply device for supplying compressed air to the solidified material supply device. Since the solidifying material charging silo for charging the solidifying material is provided, the equipment becomes a large-scale facility, and the cost is increased accordingly.

  The present invention has been made in consideration of the above-mentioned matters. The purpose of the present invention is to provide an easy-to-use backhoe capable of easily performing the mixing and agitation operation of the solidified material and the excavated soil while reducing the cost and reducing the size. And to provide a solidifying material / excavated soil mixing and stirring device.

In order to achieve the above object, the backhoe according to the present invention obtains excavated soil by rotating a stirring blade provided at the tip of the boom by pressure oil supplied from a hydraulic tank, and combines the excavated soil and the solidified material. A backhoe equipped with a solidified material and excavated soil mixing and stirring device that improves the soil quality by mixing and stirring,
A hopper into which the solidified material is charged, an air compressor that pumps the solidified material charged into the hopper with compressed air via a pressure feed pipe, and a screw that is provided in the middle of the pressure feed pipe and mixes the solidified material charged into the hopper A mounting frame that is attached to the mixer is provided, and the mounting frame is configured to be detachably mounted on the swivel.
The pressure oil and the pumping amount can be controlled by a hand operation at the driver's seat provided in the driving unit on the swivel (Claim 1).
Further, according to another aspect of the present invention, the excavated soil is obtained by rotating the stirring blade provided at the tip of the boom by the pressure oil supplied from the hydraulic tank, and the excavated soil and the solidified material are mixed and stirred. With a backhoe that improves soil quality,
The backhoe includes a main hopper into which a solidified material is charged, an air compressor that pumps the solidified material charged into the main hopper with compressed air through a pressure feed pipe, and is provided in the middle of the pressure feed pipe. A mounting frame that is integrally attached with a screw mixer that mixes the solidified material that has been added is provided, and this mounting frame is configured to be detachably mounted on the swivel base.
In addition, the pressure oil and the pumping amount can be controlled by hand operation at the driver's seat provided in the driving unit on the swivel,
In addition to the main hopper, there is provided a moving means with a wheel that can move at least an auxiliary hopper into which the solidification material is charged, and the moving means can communicate with the pressure feed pipe and is charged into the auxiliary hopper. While having a pipe to send the solidified material by compressed air,
A controller is provided in the middle of the pumping pipe to control the pumping amount of the solidified material in the pipe or the pipe on the moving means side by a manual operation at the driver's seat of the backhoe. This controller provides a solidified material / excavated soil mixing and agitating device characterized in that it has a connecting portion that can be detachably connected to the pipe on the moving means side (Claim 3).
Further, according to another aspect of the present invention, the excavated soil is obtained by rotating the stirring blade provided at the tip of the boom by the pressure oil supplied from the hydraulic tank, and the excavated soil and the solidified material are mixed and stirred. Equipped with a backhoe that improves soil quality,
A movable wheeled moving means equipped with at least a hopper into which the solidifying material is charged is provided, and this moving means has a pipe for sending the solidified material charged into the hopper by compressed air,
The backhoe has a pressure-feed pipe that can communicate with the pipe on the moving means side, and is configured to be able to control the pressure oil and the pressure-feed amount by hand operation at the driver's seat provided in the driver on the swivel base. In addition, a connecting portion is provided at the upstream end of the pressure feeding pipe so as to be detachably connected to the downstream end of the pipe on the moving means side. A solidified material / excavated soil is provided, wherein a controller is provided that can control a pumping amount of the solidified material that is pumped from the pipe on the moving means side to the pumping pipe through the connecting portion by a hand operation of A mixing and stirring device is provided (claim 4).

In the invention according to claim 1 of the present application, the agitating blade provided at the tip of the boom is rotated by pressure oil supplied from the hydraulic tank to obtain excavated soil, and the excavated soil and the solidified material are mixed and agitated. In order to improve the soil quality, a mounting frame with a hopper, an air compressor, and a screw mixer integrated is provided, and this mounting frame can be detachably mounted on the swivel. The pumping amount of the pressure oil and the solidified material can be controlled by a hand operation at a driver's seat provided in the driving section.
Therefore, according to the present invention, it is possible to provide an easy-to-use backhoe that can easily perform the mixing and excavating soil mixing and stirring operation while reducing the cost and reducing the size.
In the invention according to claim 3 of the present application, when all of the solidified material in the main hopper is consumed and emptied, the pipe on the side of the moving means that has been stopped by moving to the backhoe side in advance is connected to the connecting portion of the controller. By changing the position, the solidified material in the auxiliary hopper can be supplied from the pipe on the moving means side to the stirring blade side via the pressure feeding pipe. Therefore, the hopper provided in the backhoe can be of a small capacity accommodation type, and a small backhoe having a suitable installation space can be used.
In other words, in soil improvement work where the amount of solidifying material used is large, if we try to cover it with a single large container hopper that can be filled with the total amount used, it will be necessary to stabilize the backhoe (to balance it). Although it is necessary to use a backhoe and a small backhoe cannot be used, the invention according to claim 3 of the present application can make this possible.
And since a small backhoe can be used, compared with the case where a large backhoe is used, cost reduction and compactization can be achieved. Further, since the auxiliary hopper is mounted on the movable means with wheels, the moving means is moved to the backhoe side in advance and stopped, and only the work of replacing the pipe on the moving means side with the connecting portion of the controller is performed. Thus, the remaining necessary amount of solidified material can be supplied from the auxiliary hopper to the stirring blade side. As a result, it is possible to provide a solidified material / excavated soil mixed stirring device that is easy to use and can improve workability.
In the invention according to claim 3 of the present application, the soil improvement work is covered by two hoppers. However, in the invention according to claim 4 of the present application, the hopper is mounted only on the movable means with wheels. Therefore, since a smaller backhoe can be used, the cost can be reduced and the moving means is moved to the backhoe side in advance and stopped, and the pipe on the moving means side is placed upstream of the pumping pipe. By simply connecting to the connecting part provided at the end, the solidified material can be supplied to the stirring blade side. As a result, a solidified material and excavated soil mixing and stirring device that is easy to use and improves workability is provided. can do.

  Embodiments of the present invention will be described below with reference to the drawings. The present invention is not limited thereby.

FIG. 1 shows a ground / soil improvement work state of a backhoe 1 according to an embodiment of the present invention. 2 and 3 show a stirring blade portion for mixing and stirring the solidified material and excavated soil of the backhoe 1 according to the embodiment. 1 to 3, the backhoe 1 with a solidified material / excavated soil mixing and agitating device obtains excavated soil by rotating an agitating blade provided at the tip of a boom by pressure oil supplied from a hydraulic tank. It is a backhoe that improves the soil quality such as soft ground by mixing and stirring the soil and solidified material,
For example, a hopper 2 into which a lime-based or cement-based solidifying material used to solidify the soft soil E and a solidified material charged into the hopper 2 are pumped by compressed air through a pumping pipe 3. An air compressor 4, a screw mixer 5 that is provided in the middle of the pressure feed pipe 3 and mixes the solidified material introduced into the hopper 2, and a hydraulic tank that supplies pressure oil to the hydraulic motor 7 of the stirring blade 6 in soft soil improvement work and 8, a mounting frame 12 mounted integrally with the control box 11 provided with the pressure oil and pumping quantity to be controlled by hand operation in the driver's seat provided in the operation portion 10 on the swivel table 9 is provided, The mounting frame 12 is configured to be detachably mounted on the swivel base 9.
Each terminal of the control box 11 is connected to an operation terminal for the soft soil improvement work of the operation part of the operation part during the soft soil improvement work, whereby the driver of the driver seat can perform the soft soil improvement work. Therefore, the air compressor 4, the screw mixer 5, and the hydraulic motor 7 of the stirring blade 6 can be driven by operating the operation lever at hand.
Further, the hydraulic tank 8 and the hydraulic motor 7 are communicated with each other through a circulation channel. That is, the forward flow path i of the hydraulic tank 8 communicates with the pressure oil inlet of the hydraulic motor 7 through the pipe P, and the pressure oil outlet of the hydraulic motor 7 passes through the pipe Q to the return flow path j to the hydraulic tank 8. Communicating with

Further, the operating unit 10 and a motor unit (not shown) are provided on the swivel base 9. In this embodiment, the operating unit 10 is located on the right side of the swivel base 9 on the back side, and a mounting space in which the attachment frame 12 is mounted on the left side of the swivel base 9 is secured. Reference numeral 13 denotes a crawler type traveling unit.
The hydraulic cylinders 14, 15, and 16 that are expanded and contracted by pressure oil supplied from a hydraulic tank (not shown) provided in the prime mover unit are provided, and the main cylinder that is rotated by the hydraulic cylinder 14 at the front end of the swivel base 9. A base end 17 a of the boom 17 is attached, and a sub boom 18 that is rotated by hydraulic cylinders 15 and 16 is attached to a distal end 17 b of the main boom 17. In this embodiment, when the mounting frame 12 is removed from the swivel base 9, the agitating blade 6 is rotated by pressure oil supplied by the hydraulic tank (not shown) provided in the prime mover section to obtain excavated soil. be able to.
Further, a portal stirring blade mounting member 20 is provided at the tip 18 a of the sub boom 18, and a stirring blade supporting shaft portion 23 is pivoted between the left and right side walls 21 and 22 (see FIG. 2) of the stirring blade mounting member 20. Yes. Further, the stirring blade mounting member 20 has a hydraulic motor 7 of the stirring blade 6 provided above the stirring blade support shaft portion 23, and the stirring blade mounting member 20 is directly above the stirring blade support shaft portion 23. It has a cylindrical solid material discharge member 25 arranged so that its longitudinal direction is along the axial direction of the stirring blade support shaft portion 23. The solidified material discharge member 25 has an upper opening A in the peripheral wall communicating with the downstream end of the pressure feed pipe 3, and a lower opening B serving as a discharge port for the solidified material pumped by the pressure feed pipe 3 to the peripheral wall in the longitudinal direction. Have in the direction. The solidification material discharge member 25 and the stirring blade 6 constitute a solidification material / excavation soil mixing and stirring device that mixes and stirs the excavated soil and the solidification material.
Reference numeral 30 denotes a connecting portion of the pressure-feeding pipe 3 that is detachable and is connected when the mounting frame 12 is mounted on the swivel base 9.

Thus, in the soft soil improvement work, the hopper 2, the air compressor 4, the screw mixer 5, the hydraulic tank 8 for supplying pressure oil to the hydraulic motor 7 of the stirring blade 6 in the soft soil improvement work, and the control box 11 is attached to the swivel base 9 through a fixing means (not shown). At this time, the attachment frame 12 is positioned in the mounting space on the swivel base 9 in a state where it is suspended from a hanger 33 of a crane, for example. And while connecting the control box 11 to the operation part of a driver's seat, the connection part 30 of the pressure feed pipe 3 is connected. Further, a desired solidifying material is put into the hopper 2. Subsequently, soft soil improvement work is started. In this case, the driver operates the operation lever for soft soil improvement work of the operation unit provided in the operation unit by hand, so that the air compressor 4 and the screw mixer 5 are operated, and the hydraulic tank 8 and the hydraulic pressure are operated. The hydraulic motor 7 is driven by the circulation flow path between the motors 7. Then, the soft earth E is excavated by driving the stirring blade 6 by the hydraulic motor 7, and the solidified material is changed into the hopper 2 → the pressure feeding pipe 3 → the screw mixer 5 → the pressure feeding pipe 3 → the solidification material discharging member 25 → the stirring blade 6. While supplying, the solidified material can be quickly and uniformly mixed in the excavated soil to improve the soil quality.
In this embodiment, the agitation blade 6 is driven by the hydraulic motor 7 using the hydraulic tank 8 provided on the attachment frame 12. However, in the present invention, the hydraulic tank 8 is not provided on the attachment frame 12. The hydraulic tank (not shown) provided in the prime mover unit may be used for soft soil improvement work. That is, you may make it drive the stirring blade 6 by the hydraulic motor 7 using the said hydraulic tank (not shown) provided in the motor part.

4 and 5 show another embodiment of the present invention configured to cover soil improvement work with two hoppers. 4 and 5, the same reference numerals as those shown in FIGS. 1 to 3 are the same or equivalent.
4 and 5, the solidified material / excavated soil mixing and agitating device 40 rotates the agitating blade provided at the tip of the boom with the pressure oil supplied from the hydraulic tank to obtain the excavated soil, and the excavated soil and solidified. A backhoe 41 is provided to improve the soil quality by mixing and stirring the materials. 4 and 5, the illustration of the hydraulic tank is omitted, and the illustration of the circulation channels i and j used in the above embodiment for communicating the hydraulic tank 8 and the hydraulic motor 7 is omitted.
In the backhoe 41, for example, a lime-based or cement-based solidifying material used for solidifying the soft soil E, and a solidified material charged in the main hopper 42 together with water. Provided in the middle of the pressure feed pipe 43, an air compressor 44 that feeds with compressed air via a pressure feed pipe 43 (a pressure feed pipe portion 43 a, an upstream pressure feed pipe portion 43 b, a pressure feed pipe portion connecting the main hopper 42 and the screw mixer 45). The pressure oil and the pumping amount can be controlled by a screw mixer 45 that mixes the solidified material put into the hopper 42 and a hand operation at the driver's seat provided in the driving unit 10 on the swivel base 9. A control box (not shown) and a water tank T containing water mixed in the solidifying material are integrally attached. A mounting frame 46 is provided, and the mounting frame 46 can be detachably mounted on the swivel base 9, and can be operated at the driver's seat provided in the driving unit 10 on the swivel base 9. Thus, the pressure oil and the pumping amount can be controlled. In this embodiment, the pressure feed pipe 43 includes a pressure feed pipe portion c that connects the main hopper 42 and the screw mixer 45, an upstream pressure feed pipe portion 43b, and a downstream pressure feed pipe portion 43a.
In the backhoe 41, a mounting space in which the mounting frame 46 is mounted on the left side of the swivel base 9 is secured. Unlike the backhoe 1 described in the above embodiment, the mounting space is different from that of the backhoe 41. A small, small backhoe. Therefore, it is cheaper than the backhoe 1.

Further, the solidified material / excavated soil mixing and agitating apparatus 40 includes an automobile 49 (an example of a moving means) with a movable wheel 48 equipped with at least an auxiliary hopper 47 into which the solidified material is charged separately from the main hopper 42. ing. In addition to the auxiliary hopper 47, the automobile 49 is provided in the middle of the pipe 50 with an air compressor 52 that pumps the solidified material put into the auxiliary hopper 47 together with water by compressed air through the pipe 50. The screw mixer 53 which mixes the solidification material thrown into the auxiliary hopper 47 with water, and the water tank t which accommodated the water mixed with a solidification material are provided. And the said pipe 50 is comprised so that it may connect with the said downstream pressure feed pipe part 43a via the connection part 52 of the controller 51 mentioned later. The pipe 50 includes a pipe portion (not shown) between the auxiliary hopper 47 and the screw mixer 53, an upstream pipe portion 50b, and a downstream pipe portion 50a. 59 is a controller provided in the middle of the pipe 50 in the automobile 49. As shown in FIG. 5, when supplying the solidified material in the auxiliary hopper 47, it is pumped from the auxiliary hopper 47 by a hand operation at the driver's seat of the automobile 49. Thus, the amount of the solidified material waiting in the upstream pipe portion 50b is controlled to be fed to the downstream pipe portion 50a.
On the other hand, a controller 51 is provided in the middle of the pressure feeding pipe 43. That is, as shown in FIG. 4, the downstream pressure feed pipe portion 43 a and the upstream pressure feed pipe portion 43 b are located via the controller 51. As shown in FIG. 4, when supplying the solidified material in the main hopper 42, the controller 51 is pumped from the main hopper 42 by hand operation at the driver's seat of the back hoe 41, and the upstream side pressure feed pipe portion. The amount of the solidified material waiting in 43b to the downstream side pressure feeding pipe portion 43a is controlled. Further, as shown in FIG. 5, when all the solidified material in the main hopper 42 is consumed and emptied, the controller 51 is pumped from the auxiliary hopper 47 by a hand operation at the driver's seat of the backhoe 41. Thus, the amount of the solidified material waiting in the pipe 50 is controlled to be fed to the downstream side pressure feeding pipe portion 43a.
Further, the controller 51 has a single connecting portion 52 to which the pipe 50 on the moving means 49 side can be detachably connected. In connecting the pipe 50 to the connecting portion 52, in this embodiment, the pressure feed pipe 43 (see FIG. 4) connected to the connecting portion 52 is removed, and then the pipe 50 is connected to the connecting portion 52. However, a pair of connecting portions may be provided in the controller 51 and one may be used for the pressure feed pipe 43 and the other may be used for the pipe 50.

Thus, in the soft soil improvement work, the main hopper 42, the air compressor 44, the screw mixer 45, the hydraulic tank for supplying pressure oil to the hydraulic motor 7 of the stirring blade 6 in the soft soil improvement work, and the control box And the attachment frame 46 which attached the water tank T integrally is attached to the turntable 9 via a fixing means (not shown). At this time, the mounting frame 46 is positioned in the mounting space on the swivel base 9 in a state of being suspended from a crane hanger, for example. And while connecting a control box to the operation part of a driver's seat, the upstream pumping pipe part 43b is connected with the connection part 52 of the controller 51. FIG. Note that the downstream side pressure feed pipe portion 43 a is connected to the controller 51 in advance. Further, a desired solidifying material is put into the main hopper 42. Subsequently, soft soil improvement work is started. In this case, the driver operates the air compressor 44 and the screw mixer 45 by operating the operating lever for soft soil improvement work of the operating unit provided in the operating unit 10, and the hydraulic tank and hydraulic pressure are operated. The hydraulic motor 7 is driven by the circulation flow path between the motors 7. Then, the soft earth E is excavated by driving the stirring blade 6 by the hydraulic motor 7, and as shown in FIG. 4, the solidified material is fed into the main hopper 42 → the pressure feed pipe portion 43c → the screw mixer 45 → the upstream pressure feed pipe portion. 43 b-> controller 51-> downstream side pressure feed pipe portion 43 a-> solidified material discharge member 25-> supply to stirring blade 6 At this time, the controller 51 controls the pumping amount of the solidified material including the pumping stop.
And when all the solidification materials in the main hopper 42 are consumed and become empty, the soft soil improvement work is temporarily stopped. After the stop, the upstream side pressure feed pipe portion 43b is replaced with the pipe 50 on the automobile 49 side. That is, the upstream-side pressure-feed pipe portion 43b is removed from the connecting portion 52, and the pipe 50 on the automobile 49 side is attached to the connecting portion 52 as shown in FIG. Further, a solidifying material is put in the auxiliary hopper 47 in advance.
Subsequently, soft soil improvement work is resumed. In this case, the driver operates the operation lever for soft soil improvement work of the operation unit provided in the operation unit 10 of the backhoe 41 by hand, so that the hydraulic motor is driven by the circulation channel between the hydraulic tank and the hydraulic motor 7. 7 is driven, and the driver operates the operating lever for soft soil improvement work of the operating unit provided in the driving unit 54 of the automobile 49 by hand, so that the air compressor 52 and the screw mixer 53 are operated. Operate. Then, the soft earth E is excavated by driving the stirring blade 6 by the hydraulic motor 7 and, as shown in FIG. 5, the solidified material is piped between the auxiliary hopper 47 and the auxiliary hopper 47 and the screw mixer 53 (not shown). )) → screw mixer 53 → pipe 50 → controller 51 → downstream pumping pipe portion 43a → solidification material discharge member 25 → supply to stirring blade 6. At this time, the controller 51 controls the pumping amount of the solidified material including the pumping stop. In this way, the solidified material in the auxiliary hopper 47 can be supplied from the pipe 49 on the 49th vehicle side to the stirring blade 6 side via the pressure feed pipe 3.
In this embodiment, when soft soil improvement work is resumed, the solidified material is removed by operating the operation lever for soft soil improvement work of the operation unit provided in the driving unit 54 of the automobile 49 at hand. Although the example which supplies from the auxiliary hopper 47 was shown, the electric wire which connects the operation part of the backhoe 41 and the motor vehicle 49 is provided in the driving | operation part 10 of the backhoe 41 by providing it detachably between the backhoe 41 and the motor vehicle 49. You may comprise so that the solidification material can be supplied from the auxiliary hopper 47 only by operating the operation lever for soft soil improvement work of an operation part by hand.

FIG. 6 shows still another embodiment of the present invention in which a hopper is provided only on the wheeled moving means side. In FIG. 6, the same reference numerals as those shown in FIGS. 1 to 5 are the same or equivalent. In FIG. 6, the solidified material / excavated soil mixing and agitating device 40 ′ obtains the excavated soil by rotating the agitating blade provided at the tip of the boom by the pressure oil supplied from the hydraulic tank, and the excavated soil and the solidified material. Are mixed and stirred to improve the soil quality. In FIG. 6, the illustration of the hydraulic tank is omitted, and the circulation channels i and j used in the above embodiment for communicating the hydraulic tank and the hydraulic motor 7 are omitted.
The solidified material / excavated soil mixing and agitating device 40 ′ includes a vehicle (an example of moving means) 49 ′ with movable wheels 48 on which a large-capacity hopper 61 into which the solidified material is charged is mounted. In addition to the hopper 61, the automobile 49 ′ includes an air compressor 52 that pumps the solidified material put into the hopper 61 together with water by compressed air through the pipe 50, and is provided in the middle of the pipe 50. The screw mixer 53 which mixes the solidification material thrown into 61 with water, and the water tank t which accommodated the water mixed with a solidification material are provided. The pipe 50 includes a pipe portion (not shown) between the hopper 61 and the screw mixer 53, an upstream pipe portion 50b, and a downstream pipe portion 50a. Then, the controller 59 provided in the middle of the pipe 50 in the automobile 49 ′ is fed from the hopper 61 by the hand operation at the driver's seat of the automobile 49 ′ and supplied to the upstream pipe portion 50b when supplying the solidified material in the hopper 61. The amount of the solidified material being pumped to the downstream pipe portion 50a is controlled including the pumping stop.
Further, the upstream side pressure feed pipe portion 43 b and the downstream side pressure feed pipe portion 43 a provided in the backhoe 41 ′ are always in communication with each other via the controller 51.
Furthermore, the upstream end F of the upstream pumping pipe portion 43b is provided with a connecting portion 62 to which the downstream end f of the downstream pipe portion 50a of the pipe 3 on the automobile 49 ′ side is detachably connected.

Thus, when the soft soil improvement work is performed, the driver operates the operation lever for the soft soil improvement work of the operation unit provided in the operation unit 10 of the backhoe 41 'by hand so that the hydraulic tank and the hydraulic motor are operated. The hydraulic motor 7 is driven by the circulation flow path between the seven. Then, the soft soil E is excavated by driving the stirring blade 6 by the hydraulic motor 7, and the driver holds the operation lever for the soft soil improvement work of the operation unit provided in the operation unit 54 of the automobile 49 'at hand. By operating, the air compressor 52 and the screw mixer 53 operate. Then, the solidified material is added to the hopper 61 → the pipe portion between the hopper 61 and the screw mixer 53 → the screw mixer 53 → the upstream pipe portion 50b → the controller 51 → the downstream pipe portion 50a → the connecting portion 62 → the upstream pumping pipe portion 43b → The controller 51 is supplied to the downstream-side pressure-feed pipe portion 43a, the solidified material discharge member 25, and the stirring blade 6. At this time, the controller 59 controls the pumping amount of the solidified material including the pumping stop. Further, the controller 51 controls the amount of the solidified material to be fed, including stopping the feeding. Further, since the hopper 61 is mounted only on the automobile 49 ′, a smaller backhoe 41 ′ can be used.
In addition, in this embodiment, the example which supplies the solidification material from the hopper 61 by operating the operation lever for the soft soil improvement work of the operation part provided in the drive part 54 of motor vehicle 49 'was shown. However, by providing an electric wire for connecting the operation unit of the backhoe 41 ′ and the vehicle 49 ′ so as to be detachable between the backhoe 41 ′ and the vehicle 49 ′, the soft soil of the operation unit provided in the driving unit 10 of the backhoe 41 ′. You may comprise so that a solidification material can be supplied from the hopper 61 only by operating the operation lever for improvement work by hand.

BRIEF DESCRIPTION OF THE DRAWINGS It is whole structure explanatory drawing which shows the use condition in one Embodiment of this invention. It is a schematic diagram which shows the stirring blade used in the said embodiment, and its periphery. It is a schematic diagram which shows the stirring blade used in the said embodiment, and its periphery. It is a whole structure explanatory view showing one use state in other embodiments of this invention. It is whole structure explanatory drawing which shows another use condition in said other embodiment. It is whole structure explanatory drawing which shows the use condition in further another embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Backhoe 2 Hopper 3 Pressure feed pipe 4 Air compressor 5 Screw mixer 6 Stirring blade 7 Hydraulic motor 8 Hydraulic tank 9 Swing stand 10 Driving part 12 Mounting frame

Claims (5)

Solidified and excavated soil mixed to improve the soil quality by mixing and agitating the excavated soil and solidified material while rotating the agitating blade provided at the tip of the boom with pressure oil supplied from the hydraulic tank A backhoe equipped with a stirring device,
A hopper into which the solidified material is charged, an air compressor that pumps the solidified material charged into the hopper with compressed air via a pressure feed pipe, and a screw that is provided in the middle of the pressure feed pipe and mixes the solidified material charged into the hopper A mounting frame that is attached to the mixer is provided, and the mounting frame is configured to be detachably mounted on the swivel.
A backhoe configured to be able to control the pressure oil and the pumping amount by a hand operation at a driver's seat provided in a driving unit on a swivel.   A prime mover section is provided on the swivel base, a hydraulic cylinder that is expanded and contracted by pressure oil supplied from a hydraulic tank provided in the prime mover section is provided, and a base of a main boom that is rotated by the hydraulic cylinder is provided at the front end of the swivel base. An end is attached, and a secondary boom that is rotated by a hydraulic cylinder is attached to the tip of the main boom, while a gate-shaped stirring blade attachment member is provided at the tip of the secondary boom, and between the left and right side walls of the stirring blade attachment member The stirring blade support shaft is pivoted, and the stirring blade mounting member has a stirring blade hydraulic motor provided above the stirring blade support shaft, and the stirring blade mounting member is a stirring blade support shaft. A cylindrical solidifying material discharge member disposed so that its longitudinal direction is along the axial direction of the agitating blade support shaft portion, and this solidifying material discharge member has an upper opening in the peripheral wall downstream of the pumping pipe. End to end And is, also, backhoe according to claim 1 having a lower opening as an outlet of the solidifying material has been pumped pumping pipe wall. The excavated soil is obtained by rotating the agitating blade provided at the tip of the boom by pressure oil supplied by a hydraulic tank, and a backhoe for improving the soil quality by mixing and agitating the excavated soil and the solidified material.
The back hoe includes a main hopper into which a solidified material is charged, an air compressor that pumps the solidified material charged into the main hopper with compressed air through a pressure feed pipe, and is provided in the middle of the pressure feed pipe. A mounting frame that is integrally attached with a screw mixer that mixes the solidified material that has been added is provided, and this mounting frame is configured to be detachably mounted on the swivel base.
In addition, the pressure oil and the pumping amount can be controlled by hand operation at the driver's seat provided in the driving unit on the swivel,
In addition to the main hopper, there is provided a moving means with a wheel that can move at least an auxiliary hopper into which the solidification material is charged, and the moving means can communicate with the pressure feed pipe and is charged into the auxiliary hopper. While having a pipe to send the solidified material by compressed air,
A controller is provided in the middle of the pumping pipe to control the pumping amount of the solidified material in the pipe or the pipe on the moving means side by a manual operation at the driver's seat of the backhoe. The controller has a solidified material / excavated soil mixing and agitating device characterized in that the controller has a connecting portion that can be detachably connected to the pipe on the moving means side. The excavated soil is obtained by rotating the agitating blade provided at the tip of the boom by pressure oil supplied by a hydraulic tank, and a backhoe for improving the soil quality by mixing and agitating the excavated soil and the solidified material.
A movable wheeled moving means equipped with at least a hopper into which the solidifying material is charged is provided, and this moving means has a pipe for sending the solidified material charged into the hopper by compressed air,
The backhoe has a pressure-feed pipe that can communicate with the pipe on the moving means side, and is configured to be able to control the pressure oil and the pressure-feed amount by hand operation at the driver's seat provided in the driver on the swivel base. In addition, a connecting portion is provided at the upstream end of the pressure feeding pipe so as to be detachably connected to the downstream end of the pipe on the moving means side. A solidified material / excavated soil is provided, wherein a controller is provided that can control a pumping amount of the solidified material that is pumped from the pipe on the moving means side to the pumping pipe through the connecting portion by a hand operation of Mixing and stirring device.   A prime mover section is provided on the swivel base, a hydraulic cylinder that is expanded and contracted by pressure oil supplied from a hydraulic tank provided in the prime mover section is provided, and a base of a main boom that is rotated by the hydraulic cylinder is provided at the front end of the swivel base. An end is attached, and a secondary boom that is rotated by a hydraulic cylinder is attached to the tip of the main boom. On the other hand, a gate-shaped stirring blade mounting member is provided at the tip of the secondary boom. The stirring blade support shaft is pivoted, and the stirring blade mounting member has a stirring blade hydraulic motor provided above the stirring blade support shaft, and the stirring blade mounting member is a stirring blade support shaft. A cylindrical solidifying material discharge member arranged so that its longitudinal direction is along the axial direction of the agitating blade support shaft portion, and this solidifying material discharge member has an upper opening in the peripheral wall downstream of the pumping pipe. End to end To which, also, solidifying material, excavated soil mixing and stirring apparatus according to claim 3 or 4 having a lower opening as an outlet of the solidifying material has been pumped by the pumping pipe wall.

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