JP6344978B2 - Self-propelled powder spreader that spreads powder for ground improvement - Google Patents

Description

  The present invention relates to an apparatus for spraying powder while self-propelled, and in particular, self-propelled powder spraying for spraying cement or lime powder for ground improvement to construction sites that require ground improvement. It relates to the device.

When building a house or paving a road, it is inconvenient if the ground is soft, so this soft ground is improved. General methods make improvements of the ground is sprayed solidifying agent of cement and lime, etc. (often with a powder to facilitate construction) in construction site, which is mixed with soil, predetermined It is to make a footstep.

  By the way, residential land and roads have a large area, and in order to improve the soil, a large amount of solidifying agent is required and the construction period cannot be so long, so it is necessary to introduce mechanical power. Therefore, a “solidifying agent sprayer” as proposed in Patent Document 1 has been proposed as a machine for spraying a solidifying agent for soil improvement.

Japanese Patent Laid-Open No. 7-48830, FIG.

  FIG. 4 of Patent Document 1 shows a general solidifying agent spraying device as shown in FIG. 7, and the description thereof is also made in paragraph 0005 of the document 1 as follows. That is, the “spreader 11” shown in FIG. 7 includes a “belt conveyor 15 for sending the solidifying agent 13 comprising a caterpillar 12 for traveling and a tank (hopper) 14 for storing the solidifying agent 13 located on the upper part thereof. , And an openable / closable gate 16 for stopping the discharge of the solidifying agent 13. When the belt conveyor 15 rotates, the solidifying agent 13 positioned on the belt conveyor 15 is carried to the outlet side and passes through the gate 16. If the conveying speed of the belt conveyor is controlled by the traveling speed of the main body, a certain amount of solidifying agent can be sprayed regardless of the speed of the main body.

And the inventor of this patent document 1 has enumerated the following problems about "dispersing machine 11" shown in FIG.
・ If the speed of the main body decreases, the solidifying agent falls from the discharge port due to gravity or inertia, so the amount cannot be as expected.
・ Even if the gate opening degree is changed, a phenomenon occurs in which a large amount falls intermittently, and appropriate control cannot be performed.
-Since the gate itself is different in position from the discharge port, the solidifying agent from the gate to the discharge port will fall even if it stops and the gate is closed.
-Since the solidifying agent slides on the belt conveyor, even if the speed of the main body increases and the conveying speed of the belt conveyor increases, the conveying amount does not become theoretical and appropriate control is difficult as described above.
・ The width of the solidifying agent to be spread is basically fixed in the case of a conventional spreader. For example, when trying to spread on the ground such as a narrow road, the width of the road is an integer of the width of the spreader. Often times it is not. In such a case, if normal spraying is performed, a part that is sprayed redundantly or a part that cannot be sprayed may be formed.

In order to solve the above problem, this patent document 1 is, for example,
“In an apparatus comprising a conveyor for sending a solidifying agent and a hopper above the conveyor, the conveyor is a plurality of screw conveyors arranged substantially in parallel along the spraying direction, and the individual screw conveyors constituting the conveyor are Each has a switch to operate independently. ''
The above-mentioned problem is solved by proposing the invention.

However, according to the consideration of the present inventors, in this type of self-propelled powder spraying device, the need for following reforms is newly finding. That is, the tank containing the necessary powder in this type of self-propelled powder spraying device, as shown in FIG. 3, although the upper can in the full vehicle width size, the Subomari below for lower Must be in shape. The reason is that the first is that it must be so slide down to the lower end opening of the tank to the last one without accommodating the powder yields a mass and adhesion, to the second, the lower side of the tank on chassis, conveyor drive unit and the operating handle, that the water tank and pump for wet cleaning and powder, the work area for the maintenance, installation and operation space is absolutely necessary, it is.

If Subomari tank bottom for the powder housing, the width of openings powder is discharged, it corresponds narrower than the vehicle width, the narrowness of about 60% of the vehicle width in particular. Therefore, the conveyor for discharging the powder that has fallen from the tank, as would be belt conveyors, as would be a screw conveyor, the effective discharge width inevitably to about 60% of the vehicle width. In that case, the workability similar to that pointed out in Patent Document 1 occurs.

The present inventors have also as a Subomari down tank, or can I do To allow the powder spraying range wider than the discharge width of the conveyor (width), extensive studies on As a result, the present invention has been completed.

That is, the object of the present invention is that the tank is constricted and the installation space and work space can be sufficiently secured on the left and right sides thereof, and the spraying width can be set to the same width as the vehicle width. and to provide a self-propelled powder spraying device capable of performing spraying work of the powder effectively.

In order to solve the above problems, first, the means taken by the invention according to claim 1 will be described with reference numerals used in the description of the best mode described below.
“With the self-propelled powder spraying device 100 for storing the powder 90 containing cement or lime in the tank 20 installed in the traveling device 10 and spraying this powder 90 to the construction site where the ground improvement is necessary. There,
A conveyor 30 disposed at the bottom of the tank 20 for discharging the powder 90 to the rear of the traveling device 10;
A rotating shaft 40 that is orthogonal to the discharge direction of the conveyor 30 and that is longer than the entire discharge width of the conveyor 30 and that is disposed at the lower end of the discharge end of the conveyor 30;
A plurality of dispersing blades 50 in the form of a plate having bolts inserted through the mounting holes formed in the rotating shaft 40 at the end ;
A driving device 60 that rotationally drives the rotary shaft 40;
The Bei Ete,
Self-propelled powder spraying device 100 , wherein each dispersing blade 50 is mounted on rotating shaft 40 by fastening a nut to the tip of the bolt inserted through the mounting hole of rotating shaft 40 "
It is.

That is, self-propelled powder spraying apparatus 100 according to the present invention, the basic structure, which has as equipment shown in FIG. 7 showing a conventional example, a tank 20 for powder 90 is turned from above The traveling device 10 that carries the tank 20 and conveys it to a predetermined construction place, and the conveyor 30 that is installed between the traveling device 10 and the lower end of the tank 20 are provided. In other words, the self-propelled powder spraying apparatus 100, the powder 90 accommodated in the tank 20, while traveling in the traveling device 10 at a construction site, but continue to spread by the drive of the conveyor 30.

The self-propelled powder spraying apparatus 100, the conventional apparatus differs from that shown in FIG. 7, as shown in FIGS. 2 to 4, as well as perpendicular to the discharge direction of the conveyor 30, than discharge the entire width of the conveyor 30 It is long and is provided at the lower end of the discharge end of the conveyor 30 and includes a rotary shaft 40 that is rotationally driven by the driving device 60. The dispersion blade 50 provided on the rotary shaft 40 is used to lower the lower end of the conveyor 30. is that which is adapted to disperse the powder 90 which has fallen into.

What is important in this case is that, first, the rotating shaft 40 is orthogonal to the discharge direction of the conveyor 30 as shown in FIG. 4 and is longer than the entire discharge width of the conveyor 30 and at the lower end of the discharge end of the conveyor 30. Next, the dispersion blades 50 are provided on the rotary shaft 40. Thereby, powder 90 is not dropped to the lower discharge end of the conveyor 30, if the rotation shaft 40 is driven to rotate by a drive unit 60, powder 90 is wider range than the emission width of the conveyor 30, FIG. 4 If it says from, it will be disperse | distributed to the vehicle width range of the traveling apparatus 10, and will be spread on a construction site.

Conversely, looking with respect to the tank 20 on the traveling apparatus 10, as can be understood from FIG. 4, as Subomari below the accommodating portion side plate, while preventing the adhesion of the powder 90 in the side plate inner surface In addition, it is possible to secure a work / installation space 80 for other mechanical devices and tanks between the side plate and the outer cover 21 shown in the embodiment. is there. Furthermore, the width of the conveyor 30 itself also as it can be smaller than the vehicle width, a self-propelled powder spraying device 100 itself, it can be made easy to maintenance compact.

  The conveyor 30 described here may be any of the “belt conveyor” employed in the embodiment of the present invention as well as the “screw conveyor” employed by the spraying device of Patent Document 1. It is. In particular, when a “screw conveyor” is adopted as the conveyor 30, it is not necessary to increase the number of constructions in order to increase the construction width as in Patent Document 1, and therefore maintenance is also reduced. .

Thus, self-propelled powder spraying apparatus 100 according to the first aspect, the tank 20 can be sufficiently ensured installation space and work space 80 on the left and right as the Subomari down, comparable to swath and vehicle width and can be of a width, it has become the one that can perform the spraying work of the powder 90 efficiently.

Moreover, in order to solve the said subject, the means which the invention which concerns on Claim 2 took about the self-propelled powder disperser 100 of the said Claim 1,
"Each distributed vanes 50 are those inclined with respect to flow-down direction of the powder 90, and it has the opposite to the inclination direction in the right and left of the center 41 of the rotary shaft 40 '
It is.

In self-propelled powder spraying device 100 according to the second aspect, as shown in FIGS. 4 to 6, are inclined each distributed blades 50 with respect to flow-down direction of the powder 90, the rotary shaft and the inclination direction although those in the opposite left and right of the center 41 of 40, thereby, the powder 90 will be sprayed well spread to the left and right. In other words, the dispersion blade 50 which rotates together with the rotary shaft 40, the powder 90 which has flowed down from above, will be splashing in the lateral center 41 of the rotation shaft 40 as a boundary, the vehicle width of the traveling device 10 dispersion of the powder 90 into a cup is to be made with certainty. At this time, as shown in FIGS. 5 and 6, the space between the dispersion blades 50 is sufficiently wide, and the height of each dispersion blade 50 from the rotation shaft 40 is not so large. in the center 41 near never like scattering amount of the powder 90 is reduced.

In the embodiment described below, the attachment and the number of these dispersing blades 50, the mounting angle is Yes allowed to be freely adjusted, the required amount and per unit area of the powder 90 at the construction site, powder 90 itself The dispersion function can be adjusted as appropriate according to the nature of the material (whether it is wet or completely dry).

Thus, self-propelled powder spraying apparatus 100 according to the second aspect, in addition to exhibit similar features of the first aspect, and as it is possible to perform distribution to left and right of the powder 90 effectively It has become.

Furthermore, in order to solve the said subject, the means which invention which concerns on Claim 3 took is about the self-propelled powder disperser 100 of the said Claim 1 or Claim 2,
“The rotating shaft 40 and the periphery of the dispersion blade 50 on the rotating shaft 40 are covered with a flexible curtain 70 that opens only directly above the construction site.”
It is.

Powder 90 to which the present invention is targeted, as has been described above, a soil solidifying agent of cement and lime, etc., as are mentioned in the patent literature 1, easily stirred up by the wind and the air during spraying operations If it is a place such as a residential area where the construction site is built, cement or the like must not be scattered.

In this respect, the self-propelled powder spraying device 100 according to the third aspect, the rotary shaft 40, and the periphery of the dispersion blade 50 thereon, so as to cover the flexible curtain 70 only immediately above construction site is opened since it has to, powder 90 churned by the dispersion blade 50 is even able to soar in the said curtain 70, most of which, the construction of the curtain 70 where directly only on the construction site from an opening which opens It will not fall and splash around. The most common method for making the curtain 70 flexible is to make the entire curtain 70 made of rubber, or to have a slender shape.

In addition, the flexible curtain 70 in embodiment mentioned later is selectively attached with respect to the curtain attachment part 13 formed in a part of outer cover 21, as shown also in FIG. since it is also possible to remove depending on, or when performing maintenance of the traveling device 10, it's never get in the way when the self-propelled powder spraying apparatus 100 travels the construction location and road by traveling device 10.

Thus, self-propelled powder spraying apparatus 100 according to the third aspect, in addition to exhibit similar features of the claim 1 or 2, greatly preventing scattering of the powder 90 by a flexible curtain 70 It is a thing.

As described above, in the present invention,
“With the self-propelled powder spraying device 100 for storing the powder 90 containing cement or lime in the tank 20 installed in the traveling device 10 and spraying this powder 90 to the construction site where the ground improvement is necessary. There,
A conveyor 30 disposed at the bottom of the tank 20 for discharging the powder 90 to the rear of the traveling device 10;
A rotating shaft 40 that is orthogonal to the discharge direction of the conveyor 30 and that is longer than the entire discharge width of the conveyor 30 and that is disposed at the lower end of the discharge end of the conveyor 30;
A plurality of dispersing blades 50 in the form of a plate having bolts inserted through the mounting holes formed in the rotating shaft 40 at the end ;
A driving device 60 that rotationally drives the rotary shaft 40;
The Bei Ete,
Each dispersing blade 50 was mounted on the rotating shaft 40 by fastening a nut to the tip of the bolt inserted through the mounting hole of the rotating shaft 40. "
The main feature of the structure is that the tank 20 is constricted so that the installation space and the work space 80 can be sufficiently secured on the left and right sides thereof, and the spraying width is set to the same width as the vehicle width. and be, it is possible to provide a self-propelled powder spraying apparatus 100 capable of performing spraying work of the powder 90 efficiently.

It is a partially cutaway side view of a self-propelled powder spray apparatus according to the present invention. Of the self-propelled powder spraying device is a rear view taken along line 3-3 in FIG. Of the self-propelled powder spraying device is a rear view taken along line 1-1 in FIG. Of the self-propelled powder spraying device, in rear view taken along line 2-2 in FIG. 1, when the left portion opened the flow regulating plate 24 of the discharge end of the conveyor 30, the right side portion of the conveyor 30 The discharge end is closed by the flow rate adjusting plate 24. The rear end surface of the self-propelled powder spraying device is a partially enlarged perspective view of a rotary shaft 40 and the dispersing wings 50 to release the respective rear lower door 23. The rear end surface of the self-propelled powder spraying device, a partial enlarged view showing the rotary shaft 40 and the dispersing wings 50 to release the one of the rear lower door 23. It is a side view which shows the prior art shown by patent document 1. FIG.

Next, the invention according to each claim as constructed above, will be described the self-propelled powder spraying device 100 which is the embodiment shown in the drawings, the self-propelled powder spray according to this embodiment The device 100 substantially includes all the above-described inventions.

Although FIG. 1 are a side view of the self-propelled powder spraying device 100 is shown according to the present embodiment, the self-propelled powder spraying apparatus 100, the solidification of cement and lime or the like used in soil improvement a tank 20 for containing the powder 90 is agent, a traveling device 10 for self-propelled by mounting the tank 20, is disposed between the traveling device 10 and the tank 20, the powder 90 from the tank 20 And a conveyor 30 for discharging the vehicle to the rear part of the traveling device 10. The conveyor 30 described here may be any of the “belt conveyor” employed in the present embodiment as well as the “screw conveyor” employed by the spraying device of Patent Document 1. .

The traveling device 10 has a vehicle length of about 6 m and a vehicle width of about 2.5 m, and travels by driving an endless track 11 as shown in FIG. Of course, the traveling device 10 is intended to operate a person inside the cab 12 shown on the left side of FIG. 1, the powder 90 of the self-propelled powder spray apparatus 100 is in the tank 20 while the self-propelled as let people sprayed from the rear side to the construction site, but for running the self-propelled powder spraying apparatus 100.

  As shown in FIGS. 2 to 4, the tank 20 has a narrowed shape, and the upper end opening is full of the vehicle width of the traveling device 10, but the width of the lower end opening is about 60% of the vehicle width. It was made to become. The tank 20 itself is installed on the traveling device 10 by a box-shaped outer cover 21 and a column surrounding the outer periphery of the tank 20, and the space between the tank 20 and the outer cover 21 is shown in FIG. Thus, the work / installation space 80 is formed symmetrically. A side door 22 as shown in FIG. 1 is provided on the side surface of the outer cover 21, and a rear lower door 23 as shown in FIG. 2 is provided on the back surface of the outer cover 21. These side doors 22 and the rear lower door 23 enable maintenance of equipment inside, that is, the work / installation space 80 when released as shown in FIGS. 5 and 6, for example. .

Further, immediately below the tank 20, as shown in FIGS. 1 to 4, with each other and installed conveyor 30, this conveyor 30, the traveling device 10 receiving the powder 90 from the tank 20 inside It can be discharged backwards. Rear portion of the conveyor 30, which has protruded from the rear end of the tank 20, the powder 90 is prevented Furikakara directly on the traveling device 10.

Then, on the back of the tank 20, as shown in FIG. 2, the flow rate adjusting plate 24 to adjust the amount of the powder 90 which flows by a conveyor 30 is provided with a pair of left and right ones, these flow regulating plate 24 is opened and closed by a drive cylinder 25 attached to the rear surface of the tank 20. At the center top of the tank 20, as shown in FIGS. 2 and 3, upper is provided with a flow dividing plate 26 serving as a "mountain", the shunt plate 26, which from the top powder 90 is allowed to flow toward the inner wall of the tank 20 that is constricted.

The conveyor 30 in the present embodiment is a “belt conveyor” as shown in FIG. 1, and is horizontally supported by a large number of rolling rollers and is rotationally driven by a hydraulic motor 31 provided on the front side. Is. Also, the return portion of the conveyor 30, by the cleaning brush 32 shown in FIGS. 1 and 4, are able to perform the Sogiotoshi of powder 90 which remains.

  Now, at the lower end of the discharge end of the conveyor 30 (behind and behind the rear end sprocket of the conveyor 30), as shown in FIG. 1 and FIG. A rotating shaft 40 longer than the entire discharge width is arranged. The rotating shaft 40 is rotationally driven by the driving device 60 shown in FIG. 2, but may be shared with the hydraulic motor 31 driving the conveyor 30. If the hydraulic motor 31 and the driving device 60 are used in common, the rotating shaft 40 can be interlocked with the driving of the conveyor 30, and the rotating shaft 40 can be rotated without waste.

As shown in FIGS. 2 and 4 to 6, a large number of dispersing blades 50 are attached to the rotating shaft 40. Each dispersion blade 50 in the present embodiment has a substantially plate shape, and is integrated with a bolt inserted through the rotating shaft 40 at its end. Since the dispersion blades 50 are attached to the rotary shaft 40 by fastening nuts to the end portions of the bolts inserted through the mounting holes of the rotary shaft 40, the number of the dispersion blades 50 can be adjusted freely. it can be selected for granted and the adjustment of the angle of inclination with respect to the flow-down direction of the powder 90 is also Ru can freely.

Then, the self-propelled powder spraying device 100 according to this embodiment, as shown in FIGS. 4 to 6, tilting the dispersing blades 50 with respect to flow-down direction of the powder 90, the rotary shaft and the inclination direction The left and right sides of the center 41 of the 40 are reversed. Thus, the powder 90 from the center 41 of the rotation shaft 40 illustrated has flowed down onto the dispersing wings 50 which is on the left side in FIG. 4 is sent to the left, on the dispersion blade 50 from the center 41 has the right powder 90 which has flowed down is sent to the right, as a result, powder 90 which has flowed down will be sprayed spread to the left and right.

In other words, the dispersion blade 50 which rotates together with the rotary shaft 40, the powder 90 which has flowed down from above, will be splashing in the lateral center 41 of the rotation shaft 40 as a boundary, the vehicle width of the traveling device 10 dispersion of the powder 90 into a cup is to be made with certainty. At this time, as shown in FIGS. 5 and 6, the space between the dispersion blades 50 is sufficiently wide, and the height of each dispersion blade 50 from the rotation shaft 40 is not so large. application rate of the powder 90 at the center 41 near is less like it is not.

In the present embodiment, as shown in FIG. 4, the dispersion plate 51 is arranged below each dispersion blade 50. The dispersion plate 51 is received the powder 90, which is spread on the right and left by the dispersion blade 50 located on the left and right ends, which is intended further to dropped outward, the powder 90 by the dispersion blade 50 It helps to spread, but is not necessarily required.

Furthermore, in this self-propelled powder disperser 100, as shown in FIGS. 1 to 4, the periphery of the rotary shaft 40 and the dispersion blade 50 thereon is open only at the position immediately above the construction site. The curtain 70 is covered. Therefore, powder 90 churned by the dispersion blade 50 is even able to soar in the said flexible curtain 70, most of which, construction location directly above only to the opening of the flexible curtain 70 It will not fall from the opening to the construction site and scatter around.

In addition, the flexible curtain 70 in this embodiment is selectively attached to the curtain attachment part 13 formed in a part of the outer cover 21 as shown in FIG. since it is also possible to remove depending on, or when performing maintenance of the traveling device 10, will not be the self-propelled powder spraying apparatus 100 gets in the way when traveling the construction location and road by traveling device 10.

100 self-propelled powder spray apparatus 10 traveling device 11 caterpillar 12 cab 13 the curtain attachment portion 20 tank 21 outside the cover 22 side door 23 rearward under the door 24 the flow regulating plate 25 drive cylinder 26 diverter plate 30 conveyor 31 hydraulic motor 32 cleaning brush 40 rotates shaft 41 around 50 dispersion blade 51 distribution plate 60 driver 70 flexible curtains 80 work and installation space 90 powder

Claims (3)

A self-propelled powder spraying device for storing powder containing cement or lime in a tank installed in a traveling device and spraying this powder to construction sites where ground improvement is necessary,
A conveyor disposed at the bottom of the tank for discharging the powder to the rear of the travel device;
A rotation axis that is orthogonal to the discharge direction of the conveyor, is longer than the entire discharge width of the conveyor, and is disposed at the discharge end side lower portion of the conveyor,
A plurality of dispersing blades in the form of a plate having bolts inserted into the mounting holes formed in the rotating shaft at the ends ,
A driving device for rotationally driving the rotating shaft;
The Bei Ete,
A self-propelled powder spraying device , wherein each dispersion blade is mounted on the rotating shaft by fastening a nut to a tip of the bolt inserted through the mounting hole of the rotating shaft . Before SL Each distributed blades are those inclined with respect to flow-down direction of the powder, and, according to claim 1, characterized in that it has the opposite the inclination direction at right and left center of the rotary shaft Self-propelled powder spreader.   3. The self-propelled powder according to claim 1, wherein the rotating shaft and the periphery of the dispersing blade on the rotating shaft are covered with a flexible curtain that opens only immediately above the construction site. 4. Body spraying device.

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