JP2007327197A - Hydraulic shovel, bucket for hydraulic shovel, and soil treatment method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To carry out the treatment of sediment and soil in sand pools, and a plowland, etc. by using a widely-prevailing hydraulic shovel. <P>SOLUTION: The hydraulic shovel 1 having a bucket 4 detachably attached to the tip thereof is formed of: a chemical producing means and/or a chemical storage means 10; a chemical supply means 14 for supplying the chemical from the chemical producing means or the chemical storage means 10 to the bucket 4; and a chemical injection means 22 for injecting the chemical into the soil plowed by the bucket 4. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a hydraulic excavator, a bucket for a hydraulic excavator, and a soil treatment method. Specifically, the present invention relates to a hydraulic excavator that can perform sterilization, neutralization, and the like by applying a chemical to earth and sand such as earth and sand, and can remove foreign substances.

  For example, sandboxes in schools and parks are often unsanitary because feces and urine such as cats are often mixed. In addition, dangerous materials such as empty cans, empty bottle stoppers, and glass fragments may be mixed. Furthermore, dangerous substances may remain on the site of the factory. In order to treat the dangerous earth and sand and soil, various treatment apparatuses and the like have been developed.

JP2003-290325 JP2003-41547

  The sandbox cleaning apparatus described in Patent Document 1 includes a sterilizing agent supply unit that supplies a sterilizing agent, a heel part that enters the sand and stirs the sand, the sterilizing agent supply unit, and the heel part. It is provided with a bactericidal communication passage that communicates with an outlet that is provided in the collar and allows the bactericidal agent to flow out.

  On the other hand, in the above-mentioned Patent Document 2, there is a sand processing apparatus for a sand pit provided with a continuous bucket excavator, a sieve for removing foreign substances from the sand scraped by the excavator, and a sterilizer for spraying a disinfectant on the sand. It is disclosed.

In the apparatus described in Patent Document 1, the depth that can be stirred with a scissors is at most 30c.
m. On the other hand, the sandbox has a depth of 50 cm or more, and the above-described apparatus cannot allow the disinfectant to act deep into the sandbox.

  On the other hand, in the apparatus as described in Patent Document 2, it is theoretically possible to scrape deep sand. However, since sand is very easy to collapse, the distance between the wheels must be set large in order to excavate deeply. Therefore, the apparatus becomes very large.

  Moreover, since the average sandbox has a volume of 10 cubic meters or more, it is very difficult to return the sand to its original position when scraping all the sand and moving it to the sieve provided in the apparatus. .

Furthermore, the processing apparatus described in the said patent document 1 and the said patent document 2 is an exclusive processing apparatus, and it is difficult to use it for soil processing other than a sandbox. Moreover, since it is a dedicated device, the manufacturing cost is very high.

  The present invention is configured to solve the above-described conventional problems, and to treat soil and soil such as sandboxes and fields using a widely used hydraulic excavator.

  The invention described in claim 1 of the present application is a hydraulic excavator provided with a detachably attached bucket at a tip thereof, from a medicine generation means and / or a medicine storage means, and from the medicine generation means or the medicine storage means to the bucket. It comprises a medicine supply means for supplying medicine and a medicine injection means for injecting the medicine onto the earth and sand scraped into the bucket.

  In this invention, a chemical | medical agent is made to act with respect to the earth and sand stirred in the bucket of a hydraulic shovel.

  Since the bucket of the hydraulic excavator is originally provided for excavating the ground, it is possible to easily scrape the earth and sand in the deep part of the ground.

  Moreover, it is possible to select and use the buckets having various capacities as required, and it is possible to apply from a sandbox in a school or the like to soil in a field.

A drug generating means for generating a drug can be provided to act on the earth and sand while generating the drug, or a separately generated drug can be held in the drug storage means and used. Moreover, both the said medicine production | generation means and the said medicine storage means can also be provided.
The site | part which provides the said chemical | medical agent production | generation means and the said chemical | medical agent storage means is not specifically limited. For example, it can be provided in the vicinity of the cab, or can be provided in an appropriate part of the arm. It is supplied by the medicine supply means from the medicine, the medicine generation means or the medicine storage means to the bucket. Specifically, the medicine pressurized by a pump or the like can be supplied by a tube or the like.

  Various drugs can be used as the drug according to the purpose. For example, what can be made to act on earth and sand, such as a disinfectant, a neutralizing agent for various poisons, and an earth and sand improving agent, may be used.

  When ozone is used as a medicine, an ozone generator or an ozone water generator can be adopted as the medicine generator as in the invention described in claim 2.

  Various types of ozone generating means can be employed. For example, an electrical discharge type ozone generator is suitable. Moreover, the ozone water generating device can be configured by combining the ozone generating means and an ozone dissolving device that dissolves ozone gas in water. Moreover, what is necessary is just to set the density | concentration of ozone according to the kind and objective (sterilization, deodorizing, etc.) of the target earth and sand. Although ozone may adversely affect the human body at a high concentration, it is preferable because it is decomposed in a short time. Moreover, in the present invention, since the operator can operate from the cab apart from the bucket on which the medicine acts, the safety for the operator is high. Moreover, it can also be comprised so that an operator may not touch a chemical | medical agent by covering a driver's cab with a protection sheet etc.

The position where the medicine injection means is provided is not limited as long as it can be scraped out by the bucket or acted on the earth and sand held in the bucket. For example, as in the invention described in claim 3, the medicine injection means can be provided in the bucket. By providing the medicine injection means in the bucket, the medicine can be reliably acted on the earth and sand held in the bucket. And since a chemical | medical agent acts in a bucket, it can also prevent that a chemical | medical agent spread | diffuses unnecessarily. Moreover, it can also comprise so that a chemical | medical agent may be injected with respect to the earth and sand which are going to scrape off from the ground.

  According to a fourth aspect of the present invention, the bucket is provided with sieving means for sieving the sand that has been scraped. By providing the sieving means, it is possible to remove foreign substances from the earth and sand. As in the invention described in claim 5, the sieving means can be configured by providing a mesh-like sieve in an opening provided in the bucket. For example, a part of the bucket can be cut out to provide an opening through which the held earth and sand can be dropped, and a metal net can be provided in the opening. As the mesh size of the sieve, various sizes can be adopted according to the properties and purpose of the target earth and sand.

  In order to efficiently perform the sieving operation, it is preferable that the sieving means includes an oscillating device that vibrates or oscillates the bucket as in the invention described in claim 6. The form of the vibration exciter is not particularly limited. For example, a swinging device that swings an arm equipped with a bucket can be provided in the hydraulic mechanism of the excavator. Further, as in the invention described in claim 7, the mechanical or hydraulic vibration device can be directly provided on the bucket. Specifically, the above-described vibration device can be configured using a vibration device such as that used in a rock drill or the like.

  The invention described in claims 8 to 10 relates to a bucket that can be mounted on a general-purpose hydraulic excavator.

  According to an eighth aspect of the present invention, there is provided a bucket configured to be attached to an arm of a hydraulic excavator and provided with a medicine injection means for injecting medicine onto the sand to be scraped or held. The form of the bucket itself is not particularly limited. The present invention can be applied not only to a bucket for a backhoe that is attached downward and used for excavation work, but also to a bucket for a loading shovel that is attached upward.

  The invention described in claim 9 of the present application comprises a bucket provided with a sieve for sieving the scraped earth and sand. The form of the sieve is not particularly limited. For example, an opening can be provided at the bottom of the bucket, and a metal mesh or the like having a predetermined roughness can be attached to the opening.

  In the invention described in claim 10 of the present application, a vibration device is provided in the bucket itself. The form and operating mechanism of the vibration device are not particularly limited, and various vibration devices can be used.

  The invention described in claim 11 of the present application relates to a soil treatment method in which a chemical agent is applied to the sand and sand scraped into a bucket mounted on a hydraulic excavator or the soil and sand held in the bucket.

  The invention described in claim 12 of the present application relates to a soil treatment method for removing foreign matter while sieving the soil held in a bucket with a sieve.

  A thirteenth aspect of the present invention relates to an earth and sand processing method for performing processing while vibrating the bucket by a vibration device.

  Invention of Claim 14 of this application is related with the earth-and-sand processing method which employ | adopted ozone gas or ozone water as said chemical | medical agent.

  Embodiments according to the present invention will be described below with reference to the drawings. The present embodiment is an example in which the excavator according to the present invention is configured to be able to treat sand in a sandbox.

  As shown in FIG. 1, a hydraulic excavator 1 according to the present invention is attachable to and detachable from a cab 2 on which an operator gets on, an arm 3 that extends toward the front of the cab 2, and a tip of the arm 3. And a main body 7 provided with an endless track 6.

  The driver's cab 2 is provided with an operating device 8 and an instrument for operating the arm 3 and the endless track 6. The arm 3 is composed of a plurality of link members that are rotatably connected, and is configured to move the bucket 4 in a desired direction or hold it in a desired angular posture.

  Inside the main body 7, an engine, a generator, a hydraulic pressure generator, and the like (not shown) are provided. The arm 3 is driven by a hydraulic cylinder using the hydraulic pressure generated by the hydraulic pressure generator, and the endless track 6 is driven by the engine.

In the present embodiment, an ozone water generator 10 is provided at the rear of the cab 2. As shown in FIG. 2, an ozone water generator 10 according to the present embodiment includes an ozone generator 11 and an ozone dissolver 12 that generates ozone water by blowing ozone gas generated by the ozone generator 11 into water. And a pump 13 for pressurizing ozone water generated by the ozone dissolver 12.

  Although not shown, the ozone generator 11 generates a discharge by applying a high voltage between the discharge electrode and the dielectric electrode sandwiching the insulating plate, and sends air into the discharge portion, thereby oxygen in the air. Is partly converted into ozone by discharge energy.

  The gaseous ozone generated by the ozone generator 11 is sent to the ozone dissolver 12. In the ozone dissolver 12, ozone water is generated by blowing gaseous ozone into water. The water may be supplied from a separately provided tank or tap water may be continuously supplied to the ozone dissolver.

  The ozone water generated in the ozone dissolver 12 is pressurized by a pump 13 and sent to the bucket 4 through a tube 14 disposed in the cab 2 and the arm 3. In the ozone dissolver 12, a tank for storing the generated ozone water may be provided.

  The ozone generator 11, the ozone dissolver 12, and the pump 13 are configured to be controlled by a control device 15, and are configured to generate ozone water having a required concentration. The control device 15 is configured to be operated from an operation device 16 provided in the cab 2.

As shown in FIGS. 3 and 4, the bucket 4 according to the present embodiment has the same configuration as that of the conventional bucket as a whole, but the portion excluding the frame portion 17 is a mesh-like sieve portion 18. Formed from. In the present embodiment, the sieve portion 18 is set to a stitch that allows the sand in the sandbox to pass therethrough.

  The frame portion 17 spans a rectangular frame 17a provided along the opening of the bucket, mountain-shaped frames 17b and 17b connected to both sides of the rectangular frame 17a, and tops of the mountain-shaped frames 17b and 17b. And a bottom frame 17c connected in a shape.

  A blade 19 to be inserted into the earth and sand is provided on the front end side of the rectangular frame 17a. On the other hand, the base end portion 20 of the rectangular frame 17a is provided with a coupling mechanism 21 that is detachably coupled to the distal end portion of the arm 3.

As shown in FIGS. 3 and 4, an injection nozzle 22 capable of injecting the ozone water is provided along the inside of the bottom frame 17c. The spray nozzle 22 is formed by providing a plurality of spray holes 23 on the wall surface of the cylindrical member, and is configured to spray ozone water onto the earth and sand scraped out or held by the bucket 4.

  Pipes 24 are provided from both sides of the injection nozzle 22 to the base end 20 of the rectangular frame 17a along the inner sides of the angle frames 17b and 17b. As shown in FIG. 4, the pipe 24 wraps around the back part of the base end part 20 and is connected to an ozone water supply pipe 25 disposed inside the arm 3. The pipe 24 is formed of a metal pipe so as to withstand the force from earth and sand. On the other hand, the ozone water supply conduit 25 is configured using a flexible tube so as to be able to cope with the movement of the arm 3.

  In FIG. 5, the state which is processing the sand 26 accommodated in the bucket 4 of the said structure is shown typically.

  In this embodiment, the hydraulic device that drives the arm 3 is provided with a swinging device (not shown) that swings the arm 3 at a predetermined frequency and amplitude. The size of the mesh of the sieving portion 18 is set to a size that allows the sand 26 to be held in a stationary state while allowing the sand to pass through by rocking. Therefore, by swinging the bucket 4, the earth and sand 26 is dropped through the sieve portion 18. Thereby, the foreign material mixed in the sand 26 can be selected and removed.

Moreover, ozone water is sprayed from the spray nozzle 22 onto the sand 26. The spray nozzle 22 can spray not only ozone water onto the sand when scraping into the bucket 4 but also spray ozone water onto the sand held by the bucket 4 or falling from the sieve portion 18. It is configured as follows. Thereby, the sand in the bucket 4 can be sterilized efficiently.

  The above operation is performed above the place where the sand is collected. That is, processing is performed so that the sand that has fallen from the bucket 4 is backfilled to the original location. For this reason, it is not necessary to move sand to another place like the conventional processing apparatus, and it can process sand efficiently.

  And the said bucket 4 can excavate to the deep part of the ground like the conventional bucket, and can scrape out sand. For this reason, all the sand of a sandbox can be processed reliably.

  FIG. 6 shows a second embodiment of the present invention. In this embodiment, a vibration device 27 is provided on the bucket 4. In this embodiment, the vibration device 27 is attached to the base end portion 20 of the rectangular frame so as not to get in the way when the sand is scraped. As the vibration device 27, various vibration devices used in a rock drill or the like can be used. Further, as a driving source of the vibration device 27, hydraulic pressure for driving the arm 3, a battery, a commercial power source, or the like can be used.

  By directly providing the vibration device 27 on the bucket 4, it is not necessary to swing the bucket 4 using the arm 3 and can be applied to various conventional hydraulic excavators. Further, the skill of swinging the arm is not required.

  The present invention is not limited to the above-described embodiments. The hydraulic excavator according to the embodiment is configured to include the bucket for processing the sand in the sandbox, but may be configured to be able to process the field soil.

  In the examples, ozone water was used as a bactericidal agent, but other bactericidal agents and soil treatment agents can be used. It can also comprise so that ozone gas may be supplied to a spray nozzle and sprayed on sand.

  In the embodiment, one cylindrical injection nozzle is provided at the bottom of the bucket. However, the form and number of the injection nozzles are not limited, and a plurality of bottom frames are provided to provide a plurality of cylindrical injection nozzles. Can do. Moreover, you may provide an injection nozzle in the side part of a bucket, or a base end part.

It is a side view showing the whole hydraulic excavator concerning the present invention. It is a block diagram which shows the outline | summary of the said chemical | medical agent production | generation means. It is a front side perspective view of the bucket with which the hydraulic excavator shown in FIG. 1 was mounted | worn. It is a back side perspective view of the bucket with which the hydraulic excavator shown in FIG. 1 was mounted | worn. It is explanatory drawing which shows the effect | action of an Example. It is a perspective view which shows the other Example of a bucket.

Explanation of symbols

1 Hydraulic excavator 4 Bucket 10 Drug generating means (ozone water generating device)
14 Drug supply means (tube)
22 Drug injection means (drug injection nozzle)

Claims (14)

In a hydraulic excavator equipped with a detachable bucket at the tip,
A medicine generation means and / or a medicine storage means;
A medicine supply means for supplying medicine from the medicine generation means or the medicine storage means to the bucket;
A hydraulic excavator, comprising: a medicine injection unit that injects the medicine onto the earth and sand stirred into the bucket.   The hydraulic excavator according to claim 1, wherein the medicine generation means is an ozone generator or an ozone water generator.   The hydraulic excavator according to claim 1 or 2, wherein the medicine injection means is provided in the bucket.   The hydraulic excavator according to any one of claims 1 to 3, wherein the bucket includes a sieving means for sieving the scraped earth and sand.   5. The hydraulic excavator according to claim 4, wherein the sieving means includes a mesh-like sieve in an opening provided in the bucket.   6. The hydraulic excavator according to claim 4, wherein the sieving means includes a vibration device that vibrates or swings the bucket.   The hydraulic excavator according to claim 5, wherein the vibration exciter is provided in the bucket.   A bucket for a hydraulic excavator, comprising chemical injection means for injecting chemicals into the soil to be stirred or held.   The bucket for hydraulic excavators of Claim 8 provided with the sieve which sifts the earth and sand which were stirred.   The bucket for hydraulic excavators according to claim 8 or 9, comprising a vibration exciter.   A soil treatment method in which chemicals are applied to the soil that is stirred into a bucket mounted on a hydraulic excavator or the soil that is held in the bucket.   The earth and sand processing method of Claim 11 which removes a foreign material, sieving the earth and sand currently hold | maintained at the bucket with a sieve.   The earth and sand processing method of Claim 12 which processes while vibrating the said bucket with a vibration apparatus. The earth-and-sand treatment method in any one of Claims 11-13 whose said chemical | medical agent is ozone gas or ozone water.

Images