JP2013253429A - Crusher of road stabilizer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a crusher of a road stabilizer which can separate a sufficient amount of fine grains from a crushed ground to form a fine grain layer having a sufficient thickness on a coarse grain layer, regardless of construction conditions.SOLUTION: A screen (3) is installed on the rear side inside a hood (42) (the rear side in the traveling direction of a tractor). The screen (3) is mounted to a hood side plate (43) through a support member (5). The support member (5) is provided with elastic members (for example, rubber members 52A, 53B). A vibration device (vibrator 6) is installed on the upper edge side of the screen (3). The screen (3) has an angle adjustment mechanism which changes an angle inclined to a vertical axis.

Description

  The present invention relates to a load stabilizer crushing apparatus that includes a rotor in a hood provided in a tractor, and a crushing bit is provided on the outer periphery of the rotor, and crushes the ground or the ground surface by the crushing bit.

  A road stabilizer is known as a construction machine that crushes an aged road surface or mixes crushed road surface pieces while traveling on the road. The road stabilizer reconstructs the road surface by crushing and mixing an aged road body by rotating a rotor of a mixing device equipped with a plurality of bits at a high speed. Further, it is used for the purpose of improving the road body by stirring and mixing additives such as cement and lime into the road body where the specified strength cannot be obtained. Alternatively, it is also used for the purpose of crushing large stones and making the entire road body fine by mixing road bodies mixed with large and small stones.

  By the way, the load stabilizer has the effect of crushing lumps and stones of the road body that the bits are crushed by the momentum of the rotor of the mixing device, but crushing the lumps and stones to the required size in a single pass. Are often difficult and often require repeated crushing operations. In addition, by passing many times, the lumps and stones will be smaller on average, but it cannot be said that it is efficient. Some lumps that cannot be crushed remain, and lumps that cannot be crushed are scattered on the surface of the road body. Often results.

In order to solve the above-described problems, a device is disclosed in which the rear wall of the hood that houses the rotor of the mixing device is replaced with a screen (grating) (for example, see Patent Document 1).
According to the apparatus shown in FIG. 10 (Patent Document 1), the rotor 1 and the gravel scraped up by the rotor 1 with respect to the road surface are impact plates 411 in front of the hood (see FIG. 2: see FIG. 10). 2), the road body is crushed into small blocks by the crushing bit 2 and is thrown backward in the traveling direction. The small lump that is thrown backward in the traveling direction is classified by the screen (lattice) 3, the fine particles move to the chamber (area) A between the screen 3 and the hood 4, and the coarse particles are more than the screen 3. It is moved to the chamber (region) B on the rotor 1 side. Thereby, the crushing layer comprised from the lower coarse-grained layer Y and the upper fine-grained layer Z is formed automatically.

  In such a technique (Patent Document 1), when the crushing depth by the crushing bit 2 is relatively deep (for example, 20 cm to 30 cm), the fine fraction C1 having an appropriate thickness (for example, about 5 cm) is fine. A grain layer Z is formed above the coarse grain layer Y of the coarse grain fraction C.

However, in the case of construction conditions where the crushing depth by the crushing bit 2 is relatively shallow (for example, about 10 cm), the amount of crushed ground (crushed earth and sand) colliding with the screen 3 is reduced and sufficient. There is a problem that the fine particle portion C1 cannot be separated, and the thickness dimension of the fine particle layer Z above the coarse particle layer Y becomes thin.

Utility Model Registration No. 2570056

  The present invention has been proposed in view of the above-mentioned problems of the prior art, and a sufficient amount of fine particles are separated from the crushed ground regardless of the construction conditions, and is sufficiently above the coarse layer. An object of the present invention is to provide a load stabilizer crushing apparatus capable of forming a fine-grained layer having a proper thickness.

The crushing device (10) of the load stabilizer (RS) of the present invention includes a rotor (rotating disk 1) in a hood (4) provided on a tractor, and a crushing bit (2) provided on the outer periphery of the rotor (1). In the load stabilizer crushing device (10),
A screen (3) is provided behind the hood (42) (backward in the direction of tractor travel),
The screen (3) is attached to the hood side plate (43) via the support member (5), and the support member (5) includes an elastic member (for example, rubber members 52A and 53B). A vibration device (vibrator 6) is provided on the upper edge side,
The screen (3) has an angle adjusting mechanism for changing the angles (α1, α2) inclined with respect to the vertical axis.

  The support member (5) includes a mounting frame (screen mounting frame 51) for mounting the screen (3) and a support bracket (screen mounting frame) connected to the mounting frame (51) via elastic members (52A, 52B). A support bracket 53), a fixing pin (unit fixing pin 5Pb) for fixing the lower portion of the mounting frame (51) to the hood side plate (43), and an upper portion of the mounting frame (51) to the hood side plate (43). It is preferable to have an adjustment pin (angle adjustment pin 5Pu) to be fixed.

  The angle adjusting mechanism preferably includes a plurality of through holes (431) formed in the hood side plate (43), and the through holes (431) are formed so that adjustment pins (5Pu) can be inserted therein.

According to the present invention having the above-described configuration, the screen (3) has an angle adjustment mechanism that changes the angle (α1, α2) with which the screen (3) is inclined with respect to the vertical axis. When the crushing depth by the crushing bit (2) is relatively shallow (for example, about 5 cm), the angle (α1) at which the screen (3) is inclined with respect to the vertical axis can be increased.
If the angle (α1) at which the screen (3) is inclined in the traveling direction side with respect to the vertical axis is increased, the screen (3) is positioned in the front (tractor traveling direction) region in the hood (42). And the distance from the rotor (1) is reduced. Therefore, even if the crushing depth by the crushing bit (2) is relatively shallow and the amount of earth and sand crushed by the crushing bit (2) is small, the amount of earth and sand that collides with the screen (3) increases. A sufficient amount of fine particles can be separated from the scraped earth and sand, and a fine particle layer having a sufficient thickness can be formed above the coarse particle layer.

  On the other hand, in the case of construction conditions where the crushing depth by the crushing bit (2) is relatively deep (for example, 20 cm to 30 cm), the screen (3) should be vertical (parallel to the vertical axis) or from the direction of travel. Inclining (α2) in the direction of moving away, the fine particles are separated from the soil that has been scraped up, and the fine particle layer is formed above the coarse particle layer in the same manner as the conventional technique (see Patent Document 1) described above. .

  According to the present invention, the screen (3) is attached to the hood side plate (43) via the support member (5), and the support member (5) includes an elastic member (for example, rubber members 52A and 53B). Therefore, even if the screen (3) is vibrated by the vibration device (vibrator 6) at the upper edge of the screen (3), the vibration is completely blocked by the elastic members (5A, 5B). 43) is prevented from being damaged by vibration generated by the vibration device (vibrator 6).

Furthermore, in the present invention, if the support member (5) has an attachment frame (screen attachment frame 51) for attaching the screen (3), the screen (3) can be attached to and detached from the attachment frame (51). I can do it. Therefore, according to the construction conditions, by appropriately selecting a screen (3) having a different eye roughness and attaching it to the attachment frame (51), it is possible to secure a separation amount of fine particles from the scraped earth and sand. It is possible to ensure the thickness dimension of the fine grain layer.
Moreover, even if the earth and sand crushed by the crushing bit (2) collide with the screen (3) and the screen (3) is damaged, it can be easily and quickly replaced.

It is a side view of the load stabilizer equipped with the embodiment of the present invention. It is a see-through figure explaining an embodiment. It is a figure which shows the detail of the food | hood side board in FIG. It is a front view which shows the principal part in embodiment. It is a front view which shows the supporting member which supports the screen in embodiment. FIG. 6 is a side view of the support member shown in FIG. 5. It is explanatory drawing which shows the state at the time of using an embodiment inclining a screen on shallow construction conditions. It is explanatory drawing which shows the state which used embodiment on deep construction conditions. It is a figure explaining the inconvenience at the time of arrange | positioning a screen perpendicular | vertical on shallow construction conditions. It is side sectional drawing of the mixing apparatus which concerns on a prior art.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
In FIG. 1, in the load stabilizer RS according to the embodiment, for example, a crushing device 10 is attached to a rear portion of a tractor 100 having a crawler belt via a bracket 10B. The crushing device 10 is entirely covered with a hood 4.
The code | symbol Pv in FIG. 1 has shown the road body (road surface) before construction.

In FIG. 2, the crushing device 10 includes a plurality of rotating disks 1 (for example, 11 rows: hereinafter referred to as “rotor”) having a plurality (six in the figure) crushing bits 2 attached to the outer periphery, and a grid-like screen 3. It has. Each of the plurality of rotors 1 is arranged in parallel with the paper surface of FIG. 2, and the rotation shaft (not shown) of the rotor 1 extends in a direction perpendicular to the paper surface of FIG. 2.
The rotor 1 and the grid-like screen 3 are covered by the hood 4 from the region above the rotor 1 and the screen 3 to the region near the road surface (road surface to be constructed) Pvf. The hood 4 includes a front hood 41, a rear hood 42, a connection member 412, and two hood side plates 43. The connection member 412 connects the front hood 41 and the rear hood 42.
In FIG. 2, an arrow F indicates a traveling direction (construction direction).

With reference to FIGS. 2-6, the structure in the apparatus of the screen 3 vicinity is demonstrated.
As shown in FIGS. 2 and 6, the screen 3 is supported by an attachment frame 51 of the support member 5. In FIG. 6, the support member 5 includes a frame-shaped screen mounting frame (hereinafter referred to as “mounting frame”) 51, an upper elastic member 52 </ b> A, a lower elastic member 52 </ b> B, and a support bracket 53. .
The upper end of the screen 3 is held by the mounting frame 51 by a screen holding member 51Ba at the upper end of the mounting frame 51, a plurality of pressing plates 51Bc, and bolts (not shown).
At the lower end of the support bracket 53, a screen holding member 51Bb (for example, made of sheet metal) bent in a substantially L shape is provided. The lower end of the screen 3 is held (placed) on the screen holding member 51Bb.

As shown in FIGS. 2 and 6, in the vicinity of the upper end of the mounting frame 51, the surface opposite to the traveling direction (the back surface of the surface shown in FIGS. 4 and 5) is supported via the upper elastic member 52A. The bracket 53 is attached in the vicinity of the upper end.
On the other hand, the lower end of the attachment frame 51 is attached to the lower end of the support bracket 53 via a lower elastic member 52B.
The vibrator 6 is attached to an upper end (upper edge) portion of the attachment frame 51 via a bracket 6B. When the vibrator 6 is operated, the attachment frame 51 and the screen 3 held by the attachment frame 51 vibrate. Thereby, the earth and sand clogged with the screen 3 are screened off, and clogging of the screen 3 is prevented.

In FIG. 2, reference numeral 7 separates (divides) a chamber (region) A in which fine particles that have passed through the screen 3 move after crushing and a chamber (region) B in which coarse particles that have not passed through the screen 3 move. The partition plate is shown.
Further, reference numeral 8 in FIG. 2 denotes a rubber plate, and the rubber plate 8 is attached to the partition plate 7.

4 to 6, the upper ends of the pair of support brackets 53 in the support member 5 (the reference numerals are omitted in FIGS. 4 and 5) are connected to the cylindrical member 531.
Further, the lower ends of the pair of support brackets 53 are connected to the cylindrical member 532.
Both ends of the cylindrical members 531 and 532 are open.

In FIG. 4, the support member 5 is attached to the hood side plate 43 in the hood 4. When the support member 5 is attached to the hood side plate 43, the angle adjustment pin 5Pu on the upper end side and the fixing pin 5Pb on the lower end side are used.
The angle adjustment pin 5Pu on the upper end side is fixed to the center of the strip-shaped plate member 5Bu, and holes 5Bh for mounting screws are formed in the vicinity of both ends of the plate member 5Bu. On the other hand, the fixing pin 5Pb on the lower end side is fixed at the center of the plate-like member 5Bb having a larger diameter than the outer diameter of the pin 5Pb.

Referring to FIG. 3 (also refer to FIG. 4), when attaching the support member 5 supporting the screen 3 to the hood side plate 43, first, the hood side plate 43 is located behind the rotor 1 (to the right in FIG. 3). The fixing pin 5Pb on the lower end side in FIG. 4 is inserted into the formed through hole 430 from the outside of the hood side plate 43 (outside in the left-right direction in FIG. 4).
Then, the inserted fixing pin 5Pb is fitted into the opening of the cylindrical member 532 at the lower end of the support bracket 53.
This operation is performed on both the pair of left and right hood side plates 43.

If the fixing pin 5Pb is fitted into the opening of the cylindrical member 532, the plate-like member 5Bb to which the fixing pin 5Pb is fixed is fixed to the hood side plate 43. The fixing method is not particularly limited, and a known technique can be applied.
The opening portions of the fixing pin 5Pb and the cylindrical member 532 are fitted so as not to have so-called looseness (for example, a gap is fitted). Therefore, in a state in which the fixing pin 5Pb is fitted to the opening of the cylindrical member 532, the support bracket 53 has the center point O ₅ (see FIG. 3) of the through hole 430 formed in the hood side plate 43 as the rotation center. It is free to rotate.

Next, the upper end of the support bracket 53 is fixed to the hood side plate 43 using the angle adjustment pin 5Pu on the upper end side in FIG.
In Figure 3, the edge vicinity of the upper hood side plates 43, on the arc of the same radius R from the center point O ₅ of the through hole 430 at equal pitch (beta), the angle adjustment of a plurality (in FIG. 3 8 places) A hole 431 is drilled.
Advancing the inclination angle from the perpendicular Lv passing through the center point O ₅ until the angle adjustment holes 431 in the advancing direction along the radius R (in Fig. 3 left) end portion of the through hole 430 [alpha] 1, from normal Lv in the radial R The inclination angle up to the angle adjustment hole 431 at the opposite end (right side in FIG. 3) is α2. Here, the inclination angles α1, α2 and the total adjustment angle α (α1 + α2) are set as appropriate according to the rotational speed of the rotor 1, for example, corresponding to the crushing depth.

Line or an extension line extending radially connects the center point _{O 5} for each angular adjustment hole 431 and the through hole 430 (e.g., linear Lv in FIG. 3, 5L1,5L2) on, across the angle adjusting holes 431 At two locations (radially inward and outward from the angle adjusting hole 431), mounting holes 432 are formed. The attachment hole 432 is provided for attaching the plate member 5Bu, to which the angle adjustment pin 5Pu is fixed, to the hood side plate 43.
The pitch (radial pitch) of the two mounting holes 432 is equal to the pitch of the screw holes 5Bh formed in the plate member 5Bu on which the angle adjusting pins 5Pu are fixed.
The position of the angle adjusting pin 5Pu, that is, the inclination of the support member 5, can be arbitrarily changed (in eight steps in the example of FIG. 3) from the inclination of the straight line 5L1 to the inclination of the straight line 5L2. As a result, an angle adjustment mechanism that can adjust the angles α1 and α2 at which the screen 3 tilts with respect to the vertical axis Lv is configured.

By providing the angle adjusting mechanism described above, the screen 3 is inclined with respect to the vertical axis Lv under the construction conditions shown in FIG. 7, for example, when the crushing depth by the crushing bit 2 is relatively shallow (for example, about 5 cm). This can be dealt with by increasing the angle α1.
As shown in FIG. 9, when the crushing depth by the crushing bit 2 is relatively shallow (for example, about 5 cm) and the screen 3 is fixed at an angle in the vicinity of the vertical, the crushing bit 2 crushes. Therefore, the amount of earth and sand passing through the screen 3 is small, and as a result, the fine particles C1 to form the fine particle layer Z are reduced, and the thickness dimension (vertical) of the fine particle layer Z is reduced. The direction dimension may not reach a predetermined value.

However, in the illustrated embodiment, since the inclination angle of the screen 3 can be adjusted, the inconvenience as shown in FIG. 9 can be prevented.
That is, in the case of construction conditions in which the crushing depth by the crushing bit 2 is relatively shallow (for example, about 5 cm), as the angle adjustment hole 431 (see FIG. 3) into which the angle adjustment pin 5Pu is inserted, the forward direction (FIG. 3, the left angle adjustment hole 431 is selected.
As a result, as shown in FIG. 7, the angle α1 at which the screen 3 is inclined toward the traveling direction side (left side in FIG. 7) with respect to the vertical axis Lv is increased. When the angle α1 increases, the screen 3 is positioned in the front area (the tractor traveling direction: left side in FIGS. 3 and 7) in the hood 42, and the distance from the rotor 1 is reduced.

If the distance between the screen 3 and the rotor 1 is short, the amount of earth and sand that collides with the screen 3 increases accordingly.
Therefore, even if the crushing depth by the crushing bit 2 is relatively shallow and the amount of earth and sand crushed and scraped by the crushing bit 2 is small, the amount of earth and sand colliding with the screen 3 can be reduced in the state shown in FIG. A sufficient amount of fine particles C1 that can be secured and can pass through the screen 3 can be secured.
A fine grain layer Z having a sufficient thickness can be formed above the coarse grain layer Y.

On the other hand, as shown in FIG. 8, in the case of construction conditions in which the crushing depth by the crushing bit 2 is relatively deep (for example, 20 cm to 30 cm), the screen 3 is moved closer to the vertical (closer to the state parallel to the vertical axis). As a result, the screen 3 is located in a region behind the traveling direction (right side in FIG. 8).
If the crushing depth by the crushing bit 2 is deep, a large amount of earth and sand will be excavated, but the screen 3 collides with the screen 3 because it is located in the rearward direction (right side in FIG. 8). The amount of earth and sand can be kept within an appropriate range.
Therefore, as in the prior art (see Patent Document 1), an appropriate amount of fine particles can be separated from the scraped earth and sand to form a fine particle layer having an appropriate thickness above the coarse particle layer. I can do it.

Further, according to the illustrated embodiment, the screen 3 is attached to the hood side plate 43 via the support member 5, but the support member 5 includes vibration-proof rubbers 52 </ b> A and 53 </ b> B.
Therefore, even if the vibrator 6 is operated to vibrate the screen 3, the vibration is completely blocked by the anti-vibration rubbers 52 </ b> A and 53 </ b> B and is not transmitted to the hood side plate 43. Therefore, the hood side plate 43 is prevented from being damaged by the vibration generated by the vibrator 6.

Further, in the illustrated embodiment, the support member 5 has an attachment frame 51 to which the screen 3 is attached, and the screen 3 can be attached to and detached from the attachment frame 51. Therefore, according to the construction conditions, it is possible to appropriately select the screens 3 having different eye roughnesses and attach them to the mounting frame 51. Depending on the various construction conditions, a necessary amount of the sand and sand can be obtained. It is possible to ensure the fine grain content and the thickness dimension of the fine grain layer.
Moreover, even if the earth and sand crushed and scraped up by the crushing bit 2 collide with the screen 3 and the screen 3 is damaged, the damaged screen 3 can be easily and quickly removed and replaced with a new screen.

  It should be noted that the illustrated embodiment is merely an example, and is not a description to limit the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Rotating disk / rotor 2 ... Crushing bit 3 ... Screen / grid 4 ... Hood 5 ... Support member 6 ... Vibrating device / vibrator 10 ... Crushing device 43 ... Hood side plate 51... Mounting frames 52A, 52B... Elastic member / vibration isolation rubber 53.

Claims (3)

  In the load stabilizer crushing device provided with a rotor in the hood equipped on the tractor and provided with a crushing bit on the outer periphery of the rotor, a screen is provided in the rear of the hood, and the screen is attached to the hood side plate via a support member, The support member includes an elastic member, a vibration device is provided at an upper edge of the screen, and an angle adjustment mechanism that changes an angle at which the screen is inclined with respect to the vertical axis is provided. apparatus.   The support member includes an attachment frame for attaching the screen, a support bracket connected to the attachment frame via an elastic member, a fixing pin for fixing the lower portion of the attachment frame to the hood side plate, and an upper portion of the attachment frame. 2. The load stabilizer crushing device according to claim 1, further comprising an adjustment pin that is fixed to the hood side plate.   The said angle adjustment mechanism is provided with the some through-hole formed in the food | hood side board, The said through-hole is a crushing apparatus of the load stabilizer in any one of Claims 1 and 2 formed so that an adjustment pin can be inserted.

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