JPH1113013A - Stabilizer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stabilizer which is capable of achieving similar deep- mixing work to that of a chain type while making advantage of the characteristic of a rotor-drum type excellent in mixing property, small in the load on a chain having raking teeth, and small in troubles such as chain breakage, etc. SOLUTION: A stabilizer is provided with a vehicle body B, a working vehicle frame elevating/lowering means to be vertically moved on a working vehicle frame 2 mounted on the vehicle body B, a rotor 41 which is held by the working vehicle frame 2 below the working vehicle frame 2 and turnably supported, and has drive teeth at least on each side, and a drive source which is mounted on the working vehicle frame 2 within the rotor 41 and drives the rotor 41, and is also provided with a pulverizing and raking means 4 comprising a chain 47 having raking teeth 48 which is stretched between drive teeth of the rotor 41 and driven teeth pivotably attached to the upper side of the working vehicle frame 2, and pulverizes and mixes the material to be pulverized and mixed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stabilizer for scraping a roadbed or a subgrade while traveling on a road or the like, crushing and mixing with a ground improvement agent.

[0002]

2. Description of the Related Art A stabilizer is composed of a traveling device and a working device. The traveling device is roughly classified into two traveling types, a tire type and a crawler type. The working device is divided into a rotor drum type and a chain type. ing.

FIGS. 7 (a) and 7 (b) are schematic structural views of a stabilizer adopting a tire type running system and employing a rotor drum type working device. Stabilizer 60
Includes a traveling vehicle 61, a hood 62 supported on the traveling vehicle 61 and lying on the road surface, and a working device 66 including a rotor 63 having teeth 65 such as tines and bits for crushing and mixing the mixture to be crushed on the outer periphery. . This working device 6
6 rotates the rotor 63 by driving a hydraulic motor 64 which is a driving source housed on both sides inside the rotor 63,
The mixture to be crushed is crushed by the teeth 65, and the crushed pieces are mixed while being splashed and circulated in the hood 62,
Further, the ground is leveled at a predetermined height by a gate (not shown) at the rear end of the hood 62.

FIGS. 8 (a) and 8 (b) are schematic structural views of a stabilizer in which a traveling system is a crawler system and a working system employs a chain system. The stabilizer 70 is
A plurality of support frames 75 are provided downward on a traveling vehicle 71 and a working machine body 74 that is moved up and down by a link mechanism 73 on the rear end side of the traveling vehicle 71.
5. An endless link (chain) 78 is wound around an idler 76 provided on the lower side (tip portion) 5 and a drive sprocket 77 provided on the upper part of the work machine main body 74, and the endless link 78 has teeth 79a such as bits. And a working device 72 to which a plate 79 provided with is attached. This working device 72
A sprocket 81 is mounted on a drive shaft of a hydraulic motor 80 which is a drive source mounted on both sides of a rear end portion of the working machine body 74, and the sprocket 81 and the sprocket 82 mounted coaxially with the drive sprocket 77 are mounted. The endless link 78, which is bridged between the driving sprocket 77 and the idler 76, is rotated by driving the hydraulic motor 80, and the mixture to be crushed is crushed by the teeth 79a of the plate 79 attached to the endless link 78. And mix.

[0005] In the rotor drum type stabilizer in which the working device is the former, the rotor 63 is rotated so as to lift up the wall of the mixture to be crushed on the front side in the traveling direction of the traveling vehicle 61 in FIG. Since the mixture is sent to the rear side while being circulated and mixed with the inner surface of 62, the mixing property is extremely good, but the mixing (raising) depth is limited. That is, in the crushing and mixing operation, the rotor 63 can be put into the crushed mixture only up to the vicinity of its center. In order to perform a deeper mixing operation, the rotor diameter may be increased. However, the size of the hood 62 is also increased accordingly. There is a natural limit, and the mixing depth is up to 700mm.

On the other hand, the working device is the latter, FIG.
And (b) the chain stabilizer comprises a plate 7 attached to an endless link 78 extending into the mixture to be crushed.
Since the crushing and mixing are performed by the 9 teeth 79a, a deeper mixing operation is possible as compared with the rotor drum type.
It can correspond to a mixing depth of 00 mm or more. However, in this method, an endless link (chain) 78 having a plate 79 with raised teeth 79a, which is long extended in the vertical direction, is mounted between a driving sprocket 77 and an idler 76 which are arranged vertically apart. Since only part of the lower side is inserted into the ground to perform the work, mixing is not performed over the entire circumference, and the mixture to be crushed moves in the vertical direction, but the mixture to be crushed once rises up Mixing hardly occurs. Therefore, there has been a problem that the mixing operation has to be performed several times.

To solve these problems, the inventor of the present invention has proposed a work machine frame 2 'attached to a vehicle body B as shown in FIG. 9 and a support frame 2c' for the work machine frame.
, A rotor 41 ′ having driving teeth that is rotated by a driving source (not shown), a driven wheel 46 ′ attached to the lower side of the working machine frame, and a driving wheel of the rotor 41 ′ and the driven wheel 46 ′. Tooth 48 'which is hung and crushes the mixture to be crushed
Crushing and raising means 4 "constituted by a chain 47 'having the same, a working machine frame elevating means E' for moving the working machine frame 2 'up and down, and a working machine frame 2 covering the crushing and scraping means 4". And a hood 3 'supported by the crushing and stirring means 4 "for mixing the mixture to be crushed by the crushing and stirring means 4" (Japanese Patent Application No. 8-144722) to achieve the intended purpose. Obtained.

[0008]

However, it has been found that the following unresolved problems still remain in this improved stabilizer. That is, in the stabilizer shown in FIG. 9, the rotor 41 'with the driving teeth is positioned above the working machine frame 2', and the driven wheel 46 'is directed downward.
The chain 47 'having the teeth 48' is stretched through the shaft, so that the drive of the chain 47 'with the raking teeth is performed on the upper side of the work machine frame 2', and the lower side of the work machine frame 2 'with the largest load The resistance of the chain 47 'wound around the idler is directly applied to the pulling side of the chain. Therefore, the load on the pulling side of the chain is large, troubles such as chain breakage are likely to occur, and the life of the chain is short. In addition, it is necessary to adjust the tension of the chains, which is particularly troublesome when a large number of chains are provided.

Accordingly, an object of the present invention is to provide a novel stabilizer which can perform a deep mixing operation without making the rotor unnecessarily large while utilizing the features of the rotor drum type described above. is there.

[0010]

In order to achieve the above object, the present invention relates to a vehicle body, a work machine frame elevating means for vertically moving a work machine frame attached to the vehicle body, and A rotor rotatably supported by the work machine frame at a lower side and having driving teeth on at least both sides; (b) a drive inside the rotor and attached to the work machine frame to rotate the rotor; And (c) from a chain having rake teeth wound between the driving teeth of the rotor and a driven wheel mounted on the upper side of the working machine frame to crush and mix the mixture to be crushed. And a crushing and erecting means.

In this case, the rotor is provided with driving teeth only at both ends thereof, and a plurality of raking teeth for crushing and mixing the mixture to be crushed between the two driving teeth. It is effective to provide driving teeth over the entirety including both ends thereof. Further, it is more effective to provide a hood that is supported by the working machine frame so as to cover the crushing and raking means and mixes the mixture to be crushed and raked by the crushing and raking means. Further, the drive source is housed inside the rotor, and
It works effectively when the piping of the pressure oil supplied to the drive source is inserted into a vertically long space formed between the chain and the working machine frame.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a side view showing an example of the stabilizer according to the present invention, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is a rear view of FIG. 1 to 3, a stabilizer S includes a vehicle body B having a crawler track C for traveling on both sides;
And a working device 1 extending rearward from the rear end of the vehicle body B.

The working device 1 includes a working machine frame 2 attached to a vehicle body B and a crushing / raising means 4 described in detail later.
And the main part.

The work machine frame 2 has a front end 202 on a road surface (G.
L.), two wide plate-like bodies 2a, 2 inclined toward
b, both are fixedly connected by two beams 203 slidably inserted into a base 206 having a box-shaped cross section to maintain strength. Then, the base end of the base 206 is
Pivot 201 on the base shaft 201 provided at

FIG. 4 is an enlarged sectional view showing only one side of the working device 1, and FIG. 5 is a side view of FIG. As shown in FIG. 4, a motor housing 205 is formed inside a hollow cylindrical shaft 204 below the support frame 2c of the work machine frame 2, and a hydraulic motor 5 as a drive source is formed in the motor housing 205. I'm wearing An electric motor may be used as the drive source. The hydraulic motor 5 is provided with a planetary gear reduction mechanism 501, and a rotation drive unit 502 is fixed to a head plate 411 of a drive drum (hereinafter, referred to as a drum) 41 as a rotor in this embodiment.

Driving teeth 44 (only one side is shown in the figure) are fixedly formed at both ends of the drum 41 in FIG. 4 in the axial direction. At a position corresponding to the driving teeth 44 above the driven sprocket 46, a driven sprocket 46 as a driven vehicle is axially mounted on a support frame 2 c of the working machine frame 2 via a support member 45. The driving tooth 4
A chain 47 is looped between each of the driven sprocket 4 and the driven sprocket 46. A large number of tooth mounts 471 are continuously provided on the chain 47, and tines, bits, and the like (bits are used in this embodiment) such that the respective tooth mounts 471 form a predetermined angle with each other. The raising teeth 48 are implanted. In this embodiment, the mounting pattern of the raked teeth 48 on the chain 47 is such that the crushed mixture is easily raked by the raked teeth 48. Is formed so as to gradually become wider in the direction in which the surface is scraped off. The drum 41, the plurality of locations in the axial direction disc 42 ₁ (nine in this embodiment), 42 ₂ ...... 42 ₉ (FIG. 3) is fixed, as shown in FIG. 5, each disk 42 ₁
To 42 teeth 43 transcript at 60 ° intervals in this embodiment around or periphery of ₉ is attached.

In this embodiment, the driven sprocket 46 meshing with the chain 47 is used as the driven vehicle. However, the purpose can be achieved by using a toothless wheel in place of the sprocket.

A drum 41 having the above-mentioned raised teeth 43, a hydraulic motor 5 attached to the support frame 2c of the working machine frame 2 and serving as a drive source for rotating the drum 41;
Drive teeth 44 fixedly formed at both ends of the drum 41
And a driven sprocket 46 as a driven vehicle attached to the support frame 2c of the work machine frame 2 at a position above the driving teeth 44, and the driven sprocket 46 is wound around the driven teeth 44 and the driven sprocket 46 to crush the mixture to be crushed. Each of the stirrer and the chain 47 having the stirrer teeth 48 constitutes the crusher and stirrer 4.

The hydraulic motor 5, which is a driving source for rotating the drum 41, is entirely housed inside the drum 41. A pipe 7 for supplying pressure oil to the hydraulic motor 5 from a hydraulic pump (not shown) attached to the engine on the vehicle body via a power distributor is provided in the inner circumferential space of the chain 47 with the raking teeth 48. And is inserted into a vertically long space H formed by being partitioned by the support frame 2c of the working machine frame 2. Thus, the pressure oil can be supplied to the hydraulic motor 5 below the support frame 2c of the working machine frame 2, and the crushing and scraping operation deep under the ground can be performed without any trouble. When the drive source is an electric motor,
Similarly, the electric wiring for supplying electric power to the electric motor can be passed through the long space H in the vertical direction.

FIG. 6 is an enlarged sectional view showing another embodiment of the working device. The working device shown in FIGS. 1 to 5 includes driving teeth 44 for driving a chain 47 having raking teeth 48 only at both ends of the drum 41,
In the embodiment shown, a plurality of raking teeth 43 for crushing and mixing the mixture to be crushed are provided between the two driving teeth 44 (44).
Drive teeth are provided for driving the chain with the raking teeth throughout, including both ends. That is, the drum 4
1 is provided with drive teeth 44 at both ends thereof, and driven sprockets 46 which are axially mounted via support members 45 in such a manner that both ends thereof are supported by the support frame 2c of the working machine frame 2 above the drive teeth 44. Are interposed between the chains 47 having the raised teeth 48, and the driving teeth 44 ₁ , 44 ₂ . The driving teeth 44 ₁ , 44 ₂ .
The driven sprockets 46 ₁ , 46 ₂ .
Are provided, and a chain 47 is provided between each of the driving teeth 44 ₁ , 44 ₂ ... And the driven sprockets 46 ₁ , 46 ₂ .
₁ , 47 ₂ …. Each chain 47 ₁ , 4
7 ₂ ... in the upper, a number of teeth mount 471 _1, 471 ₂ ... are continuously provided, each tooth mount 471 _1, 471 ₂ ... teeth 48 ₁ transcript another so as to form a predetermined angle, 48 ₂ Plant….

The crushing and raking means 4 'in this embodiment
Is a hydraulic motor 5 which is attached to the support frame 2c of the working machine frame 2 and drives the drum 41 to rotate, a driving tooth 44 fixedly formed at both ends of the drum 41, and both ends of the drum 41 drive teeth 44 which is fixed forming an intermediate position except the position of the parts _1, 44 ₂ ... and the drive teeth 44, 44 _1, 4
4 ₂ ... driven sprocket mounted on the support frame 2c of the work machine frame 2 at a position above the 46 _1, 46
_2, and the driving teeth 44 and the driven sprockets 46, 46 ₁ ,
Placed around between 46 ₂ ... and cause can only crush the object to be crushed mixture, constituted by the respective chains 47, 47 _1, 47 ₂ ... and having raised teeth 48 _1, 48 ₂ ... the oyster.

In FIG. 6, the same reference numerals as those used in the embodiments shown in FIGS. 1 to 5 denote common parts and members, and a detailed description thereof will be omitted.

Next, the working machine frame lifting / lowering means E will be described with reference to FIGS. Working machine frame up / down cylinders 6 and 6 are fixed to brackets 207 and 207, respectively, which are raised at symmetrical positions on the upper surface of the base portion 206.
The tips of a and 6a are connected to the rear side of the vehicle body B. Therefore, the rods 6a of the cylinders 6 and 6 for raising and lowering the working machine frame,
6a, the working machine frame 2
Can be raised and lowered. A shift cylinder 208 is attached to a support member 209 provided at another position on the base 206, and the tip of the rod 208a is provided on the base end side of one plate-like body 2a of the working machine frame 2. Connected to bracket 210. By the expansion and contraction of the rod 208a of the shift cylinder 208, the left and right plate-like bodies 2a and 2b
The position is shifted to the left and right to the position indicated by the two-dot chain line, so that obstacles can be avoided and construction can be performed over the entire road width. The work machine frame lifting / lowering means E has been described in connection with the example in which the base end of the base 206 of the work machine frame 2 is pivotally supported on the base shaft 201 provided on the vehicle body B. However, the present invention is not limited to this example. The cylinder may be moved up and down, or may be moved up and down by other elevating means.

The hood 3 shown in FIG. 1 is supported on the work machine frame 2 so as to cover the crushing and raking means 4 as necessary. The drum 41 is rotated by the drive of the hydraulic motor 5 in FIG. 4, the crushed mixture is crushed by the rake teeth 43 and the rake teeth 48 on the chain 47 wrapped around both ends, and the crushed pieces are removed. By mixing while hopping and circulating inside the hood 3, more effective mixing is achieved.

The operation of the stabilizer having the above configuration will be described. When the rod 6a of the cylinder 6 for raising and lowering the working machine frame shown in FIGS. 1 and 2 is extended, the working machine frame 2 is lowered (tilted) so that the front end side 202 approaches the ground.
FIG. 3 attached to the support frame 2c of the work machine frame 2.
The crushing and raking means 4 in FIG. 4 (the crushing and raking means 4 'in the embodiment of FIG. 6) is lowered from the position indicated by the two-dot chain line in FIG. 1 to the position indicated by the solid line, and the entire drum 41 is moved below the road surface (GL). Face deep into the mixture to be crushed. Drum 41 with drive teeth 44 constituting crushing and raking means 4, drive teeth 4
Chain 4 with teeth 48 driven by 4
7 and transcription teeth 43 attached to the disk 42 _1, 42 ₂ ...... 42 ₉ provided between the side of the chain 47 is driven by the operation of the hydraulic motor 5, transcription chain toothed 48 47 And Raised Teeth 4
The drum 41 having the rotation 3 rotates so as to scrape off the wall of the mixture to be crushed on the front side in the traveling direction of the vehicle body B (the direction of the arrow b in FIG. 1) as the vehicle body B advances (FIGS. 1 and 5). Arrow a). Of course, it is also possible to reverse the mounting direction of the raking teeth 48 and 43 so as to rotate the wall of the mixture to be crushed on the front side in the traveling direction of the vehicle body B.

According to the present invention, the driving teeth 4 are provided on at least both sides.
4 is provided, and the driving of the chain 47 with the rake teeth 48 bridged between the driving teeth 44 and the driven sprocket 46 mounted on the upper side of the support frame 2c of the working machine frame 2 is performed. Support frame 2 for work machine frame 2
c is performed directly on the lower drum 41 side, so that the force applied to the chain 47 generated in the ground near the lower part of the drum 41 is a resistance to the link bush portion of the chain 47 wound around the driving teeth 44. Although it is applied as a force, the force is not easily transmitted to the other chain parts, preventing accidents such as chain breakage, which tends to occur in the conventional example where the chain is driven above the work equipment frame. can do. In this case, a space H (see FIG. 4) for passing a pipe 7 for supplying pressure oil to the hydraulic motor 5 as a drive source (a cable for supplying electricity when the drive source is an electric motor) 7 is provided. Since a large size can be secured on both sides of the drum 41 in the vertical direction, a deep crushing and mixing operation can be performed.

When the mixing depth is to be reduced, the rod 6a of the cylinder 6 for raising and lowering the working machine frame is expanded and contracted from the position of the maximum mixing depth D (FIG. 1). The mixing depth of the drum 41 having the raised teeth 43 and the chain 47 with the raised teeth 48 can be set to an arbitrary mixing depth.

After completion of the work, the rod 6a of the cylinder 6 for raising and lowering the working machine frame in FIG. 1 is completely retracted, and the working machine frame 2 is raised from the position indicated by the solid line in FIG. Assume that the raising means 4 is in the upright posture.

In the above-described embodiment, the stabilizer provided with the crawler-type traveling device having the crawler belt C for traveling on the vehicle body B has been described. The effect of is obtained.

[0030]

The first aspect of the present invention described above.
According to the stabilizer of the present invention, a crushing and scraping means is rotatably supported by being sandwiched by the working machine frame below the working machine frame, and has a drum having driving teeth on at least both sides, A drive source attached to the working machine frame to rotate the drum, and is bridged between the driving teeth of the drum and a driven wheel mounted on the upper side of the working machine frame to crush and mix the mixture to be crushed, And a chain having raised teeth, and the work machine frame is moved up and down by the work machine frame elevating means, and the crushing and raising means is moved up and down to perform crushing and mixing work. This can be done directly on the drum side below the frame. Therefore, in the case of the stabilizer having the conventional chain-type working device, the driving of the chain is performed on the upper side of the work machine frame, and the resistance applied to the chain portion wrapped around the idler on the lower side of the work machine frame with the largest load is the chain. However, in the present invention, the load on the chain having the rake teeth is small, and the risk of the chain being broken can be avoided. The service life is also extended.

Further, by providing drive teeth only at both ends of the drum and a plurality of raking teeth for crushing and mixing the mixture to be crushed between the two drive teeth, Since the drum itself is provided with raking teeth, stable and powerful crushing and raking work can be performed, and crushing and mixing can be performed over the entire circumference of the drum, thereby improving the mixing property. By providing the chain only at both ends of the drum, the work of adjusting the tension of the chain can be reduced, and troubles such as chain breakage can be minimized.

Next, the drive teeth are provided over the whole of the drum including both end portions, whereby the crushing and mixing can be performed over the entire circumference of the drum, and the mixing property is improved.

Further, a hood supported by the working machine frame so as to cover the crushing and raking means and mixing the mixture to be crushed by the crushing and raking means is provided. The crushed mixture thus obtained can be circulated many times in the hood to perform the crushing and mixing operation, and the mixing property is greatly improved.

The drive source is housed inside the rotor,
And by making the piping or wire of the pressurized oil fed to the drive source into a vertically long space formed between the chain and the working machine frame, the configuration of claim 5 allows
Pressure oil or electricity can be supplied to a drive source below the support frame of the work machine frame, and crushing and scraping work deep under the ground can be performed without any trouble.

[Brief description of the drawings]

FIG. 1 is a side view showing an example of a stabilizer according to the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a rear view of FIG. 1;

FIG. 4 is an enlarged sectional view showing only one side of the working device.

FIG. 5 is a side view of FIG. 4;

FIG. 6 is an enlarged sectional view showing another embodiment of the working device of FIG. 4;

FIG. 7A is a side view of a conventional rotor drum type stabilizer, and FIG. 7B is an enlarged sectional view of the rotor drum.

8A is a side view of a conventional chain stabilizer, and FIG. 8B is a rear view thereof.

FIG. 9 is a side view showing an example of a conventional improved stabilizer.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Working device 2 ... Work machine frame 3 ... Hood 4 ... Crushing and raking means 41 ... Rotor (drive drum) 42 _{1 to} 42 ₉ ... Disk 43 ... Raking teeth 44 ... Driving teeth 45 ... Support member 46 ... Following sprocket ( Driven vehicle) 47 ... Chain 48 ... Raised teeth 5 ... Hydraulic motor 6 ... Cylinder for lifting and lowering the working machine frame 7 ... Piping S ... Stabilizer C ... Crawler belt B ... Body D ... Maximum mixing depth E ... Working machine frame elevating means

Claims (5)

[Claims] 1. A vehicle body, a work machine frame lifting means for vertically moving a work machine frame attached to the vehicle body, and (a) a rotatable support sandwiched by the work machine frame below the work machine frame. A rotor having driving teeth on at least both sides thereof, (b) a driving source inside the rotor and attached to the working machine frame to rotate the rotor, and (c) driving teeth of the rotor and the operation. A stabilizer, which is provided between a driven vehicle mounted on an upper side of a machine frame and a crushing / raising means comprising a chain having raked teeth for crushing and mixing the mixture to be crushed. 2. The rotor according to claim 1, wherein the rotor is provided with drive teeth only at both ends thereof, and between the two drive teeth is provided a plurality of raking teeth for crushing and mixing the mixture to be crushed. Stabilizer. 3. The stabilizer according to claim 1, wherein the rotor includes driving teeth throughout the rotor including both ends. 4. A hood supported by a working machine frame so as to cover said crushing and raking means, and a hood for mixing the crushed mixture raked by the crushing and raking means is provided. 3. The stabilizer according to any one of 3. 5. The drive source is housed inside a rotor, and a pipe for pressurized oil supplied to the drive source is formed in a vertically long space formed between a chain and a working machine frame. The stabilizer according to any one of claims 1 to 4, wherein the stabilizer is inserted into the stabilizer.