JP2001327890A - Self-traveling crushing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a self-traveling crushing device having excellent stability before and after traveling or working and a simple structure and capable of reducing the cost. SOLUTION: In the self-traveling crushing device, which is provided with a car body (2) having a traveling device (4), a crusher (11) loaded on the car body (2) and for crushing a material to be crushed such as rock and a sieve shaker (12) loaded on one side of the car body (2) in the longitudinal direction and for sieving the crushed material and is for discharging the crushed material sorted by the sieve shaker (12), angles (α, β) between a straight line formed by connecting the position of the center of gravity of the mobile crushing device (1) respectively to the one side end grounded point (6) of the traveling device (4) and another side end grounded point (7) and the plumb lines passed respectively through both grounded points (6) and (7) are set respectively in the range of 37-90. The angle (α) in the grounded point (6) nearer the sieve shaker (12) is controlled to be larger than the angle (β) in the grounded point (7) of another side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-propelled crushing apparatus, and more particularly to a self-propelled crushing apparatus in which the balance in the front-rear direction at the time of running and working is taken into consideration (improved running and workability).

[0002]

2. Description of the Related Art Conventionally, since a concrete aggregate or the like is manufactured near a rock mining site or the like, a self-propelled type that can accurately and uniformly produce crushed particles and can move between work sites. Crushers are often used. Various types of self-propelled crushing devices have been put to practical use, and examples thereof include Japanese Patent Application Laid-Open No. Hei 5-13859 and Japanese Patent No. 280.
One disclosed in Japanese Patent No. 9598 is known.

FIG. 4 shows a first conventional example of Japanese Patent Application Laid-Open No. Hei 5-1.
It is a side view which shows the working attitude | position of the self-propelled crushing apparatus 50 disclosed by 38059. A pair of left and right crawler-type traveling devices 4 and 4 are attached to a lower portion of the main frame 52.
1 is configured. At a substantially central portion in the longitudinal direction of the main frame 52, inside a cylindrical concave supporter having a concave arranged in an umbrella shape downward, eccentrically rotate a truncated conical mantle facing the concave. A so-called cone-type crusher 11 for crushing by opening and closing a gap formed between the concave and the mantle is mounted. The vibrating sieve 12 is mounted on a front portion of the main frame 52 in the longitudinal direction via a lifting device 53 so as to be able to move up and down. Below the front end of the main frame 52,
An outrigger 54 that can be grounded during work is attached to be able to move up and down. A power source 2 is provided at the rear of the vehicle body 51 in the longitudinal direction.
On the left and right sides of the vehicle body 51, a supply conveyor 31 for supplying the object to be crushed to the vibrating sieve 12 is attached in a slanted rear direction. The front end of the supply conveyor 31 is attached to the front of the vehicle body via a swing link device 55, and the substantially central portion in the longitudinal direction is swingable with the tip end of the support frame 57 as a fulcrum 56 via a support frame 57. It is attached to the approximate center of the vehicle. Further, below the vibrating sieve 12, a product conveyor 33 for discharging a product (a material to be crushed) is attached. It is set high enough for loading. A return conveyor 34 is disposed obliquely rearward and upward below the crusher 11, and the material to be crushed by the crusher 11 is again supplied onto the supply conveyor 31 from the rear end.

When the self-propelled crusher 50 travels, as shown in FIG. 5, the vibrating sieve 12 is lowered by an elevating device 53 and the supply conveyor 31 is rocked about a fulcrum 56 by a rocking link device 55. To move it to a substantially horizontal posture. As a result, the overall height of the vehicle is reduced to ensure the stability of the running posture, and the interference between the supply conveyor 31 and the outside during running is prevented.

FIG. 6 shows a second conventional example of Japanese Patent No. 280.
It is a side view which shows the self-propelled crushing apparatus 60 disclosed by No. 9598. A pair of left and right crawler-type traveling devices 4 and 4 are attached to a lower portion of the main frame 62.
Is configured. A cone-type crusher 11 is mounted substantially at the center of the main frame 62 in the longitudinal direction, and a vibrating screen 12 is mounted on a gantry 63 installed at the front of the main frame 62. At the lower part of the front end of the main frame 62, an outrigger 64 that can be grounded is provided so as to be able to move up and down. On the discharge side of the vibrating sieve 12, the crusher 1
A shooter 13 is provided toward the upper inlet of the first shooter. Further, the power source 20 is mounted on a sub-frame 65 fixed to a rear portion of the main frame 62 in the longitudinal direction. A supply conveyor 31 is arranged on the side surface of the vehicle body 61 so as to be inclined forward and upward. At the rear end of the supply conveyor 31, there is provided a bending drive means 66 capable of bending the rear end substantially horizontally as shown by a thin two-dot chain line. A product conveyor 33 is attached below the vibrating sieve 12 so as to be inclined forward and upward. A return conveyor 34 is disposed below the crusher 11 toward the rear, and the crushed material is again supplied onto the supply conveyor 31 from the rear end.

The self-propelled crusher 60 grounds the outrigger 64 during operation to prevent the height H of the front end of the product conveyor 33 from fluctuating due to the vibration of the vibrating sieve 12. Further, when moving between sites, the outrigger 64 is raised, and the rear end of the supply conveyor 31 is bent substantially horizontally by the bending driving means 66 to prevent contact between the rear end of the supply conveyor 31 and the ground. I have.

[0007]

However, the prior art described above has the following problems. 1) In the configuration disclosed in Japanese Unexamined Patent Application Publication No. 5-138059 of the first conventional example, the amount of overhang of the vibrating sieve 12 from the grounding point 6 at one end of the traveling device 4 is large, and the stability in the front-rear direction is poor. During the operation, the body 51 swings back and forth due to the vibration of the vibrating screen 12. As a result, the material to be crushed is unevenly distributed in the crusher 11, so that the mantle or the concave of the crusher 11 is likely to be unevenly worn and to be quickly worn. Further, since the vehicle body 51 swings in the front-rear direction during the operation, the loading height H of the product conveyor 33 may fluctuate, which may hinder the product loading operation. The outrigger 54 is required to prevent the early wear and the variation of the loading height H. However, the outrigger 54 is complicated and the cost is increased. When driving further, FIG.
When the vibrating sieve 12 is lowered by the elevating device 53, the center of gravity of the vibrating sieve 12 comes further forward, so that the horizontal distance of the position of the center of gravity of the vibrating sieve 12 from the ground contact point 6 at one end of the traveling device 4 as shown in FIG. Becomes longer, the stability in the front-rear direction decreases, and the swing in the front-rear direction during traveling increases. Also,
Since the height of the ground at the rear end of the supply conveyor 31 fluctuates due to the swing, there is a possibility that the ground may be damaged by contact with the ground when traveling on a rugged site or climbing a slope. Further, the lifting device 5
3 and the swing link device 55 are mounted, so that the structure is complicated, the operation is complicated, and the cost is increased. 2) In the configuration disclosed in Japanese Patent No. 2809598 of the second conventional example, the main frame 62 is
Since it is located above the ground, the ground clearance up to the upper surface of the main frame 62 is increased. Therefore, the ground height at the upper end of the crusher 11 is increased, and accordingly, the mounting position of the vibrating sieve 12 is also increased. As a result, the overall height of the apparatus is increased (for example, about 11 m in the actual machine), so that the position of the center of gravity of the entire apparatus is high and unstable. In addition, the amount of overhang of heavy objects such as the vibrating sieve 12 and the power source 20 in the front-rear direction from the grounding points 6 and 7 at both ends of the traveling device 4 is large, and the overall length of the device is longer than the grounding length. The total length is about 25 m compared to the length of about 6 m), and the stability in the front-rear direction is not good. For this reason,
During operation, the swing of the vibrating sieve 12 before and after is large, so that the mantle and the concave of the crusher 11 are more likely to be worn out early due to uneven wear, and the loading height H of the product conveyor 33 shown in FIG. It fluctuates and hinders the loading operation. In order to prevent these inconveniences, the outrigger 64 must be mounted, and the structure becomes complicated. Furthermore, since the swing before and after driving is large,
Running stability is not good.

The present invention focuses on the above problems, and provides a self-propelled crushing device having good stability before and after running or working, and a self-propelled crushing device having a simple structure and capable of reducing costs. It is intended to provide.

[0009]

In order to achieve the above object, a self-propelled crushing apparatus according to the present invention is configured as follows. Here, a description will be given with reference to FIG. That is, in the first invention, the self-propelled crusher 1 includes a crusher 11 mounted on a vehicle body 2 having a traveling device 4 and a vibrating screen 12 mounted on one side in the longitudinal direction of the vehicle body 2. And a vertical line c connecting the center of gravity G of the self-propelled crushing device 1 and one end grounding point (front end grounding point in FIG. 1) 6 of the traveling device 4 and a vertical line c passing through the one end grounding point 6. Angle α to be formed, center of gravity position G and traveling device 4
The angle formed between a straight line b connecting the other end ground point (the rear end ground point in FIG. 1) 7 and a vertical line d passing through the other end ground point 7 is
Each is set within the range of 37 ° to 90 °. First
According to the present invention, since the positional relationship between the center of gravity G of the self-propelled crusher 1 and the grounding points 6 and 7 at the front and rear ends of the traveling device 4 is appropriately set, the center of gravity G with respect to the grounding length is set. Lower,
Stability during running and work can be sufficiently ensured. Therefore, it is possible to travel without swinging in the front-rear direction, it is easy to travel, and even when the transport device 30 such as a conveyor for transporting crushed materials is mounted, the transport device is used when traveling on a rugged site or climbing a hill. 30 can be prevented from interfering with the ground. Moreover, the installation of the self-propelled crushing apparatus 1 during the operation can be stabilized.

In the second invention, the angle α at the contact point 6 on the side close to the vibrating screen 12 is larger than the angle β at the contact point 7 on the other side, that is, the position G of the center of gravity is It is provided on the opposite side of the vibrating sieve 12 from the center between the points 6 and 7. According to the second invention, the position of the center of gravity G is on the opposite side of the vibrating screen 12 with respect to the center position of the contact length of the traveling device 4,
Therefore, the distance from the one-end grounding point 6 to the center of gravity position G can be increased, and the magnitude of the front-back swing around the one-end grounding point 6 of the vehicle body 2 caused by the vibration of the vibrating screen 12 during the operation is reduced. . Therefore, the cone type crusher 11
In this case, early wear due to uneven wear of the concave and mantle can be prevented, and the occurrence of vertical swing of the tip of the product conveyor 33 or the like that discharges the crushed material (product) from the vibrating sieve 12 is reduced and no trouble is caused. Can work. This also eliminates the need for outriggers to reduce swing, thereby simplifying the structure and reducing costs.

In the third invention, the horizontal distance between the one-end grounding point 6 and the position g of the center of gravity of the vibrating sieve 12 is set to the one-end grounding point 6.
It is preferable that the distance be within 0.3 times the contact length between the contact point 7 and the other end contact point 7. Note that the value of 0.3 times is within a range in which the vertical swing amount of the leading end of the transfer device 30 caused by the vibration of the vibrating sieve 12 does not hinder the actual operation, which is obtained based on a predetermined test result by the present inventor. This is the maximum value. According to the third aspect of the invention, the magnitude of the back-and-forth swing around the one end ground point of the vehicle body 2 due to the vibration of the vibrating screen 12 can be reduced. Therefore, the vertical swinging amount of the leading end of the transfer device can be reduced, so that the work can be performed without any trouble, and the outrigger for reducing the swinging becomes unnecessary, so that the structure can be simplified and the cost can be reduced.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of a self-propelled crushing apparatus according to the present invention will be described in detail with reference to the drawings.

FIG. 1 is a side view of a self-propelled crushing apparatus 1 according to the present invention, and FIG. 2 is a plan view. In the following, FIG.
The same reference numerals are given to the same components as the components 5 and 6.
1 and 2, a pair of left and right traveling devices 4 and 4 having a crawler belt 5 are attached to a lower portion of the main frame 3, and the main body 3 and the traveling devices 4 and 4 constitute a vehicle body 2. Have been. In addition, a cone type crusher 1 mounted substantially at the center of the main frame 3 in the longitudinal direction.
1, a vibrating sieve 12 mounted on the front part in the longitudinal direction, a power source 20 mounted on the rear part in the longitudinal direction, and a conveyor-type transfer device 30 mounted on the upper part and the front and rear parts of the vehicle body 2. The device 10 is constituted. The vibrating sieve 12 is mounted on a frame 15 fixed on the front portion of the main frame 3 with the vibrating direction of the sieve inclined toward the crusher 11 with respect to the vertical direction. The tip of the first shooter 13 attached to the vibrating sieve 12 is connected to the upper material inlet 1 of the crusher 11.
It is open toward 1a.

The transfer device 30 has a supply conveyor 31, a product conveyor 33, and a return conveyor 34. A long side (for example, 17 m to 1 m) for supplying the material to be crushed to the vibrating sieve 12 along the longitudinal direction is provided on the side surface of the vehicle body 2.
An (8 m) supply conveyor 31 is arranged inclined rearward and downward. The lower end of the supply conveyor 31 is located near the ground, the upper end is located above the vibrating sieve 12, and a second shooter 32 opening toward the vibrating sieve 12 is provided at the upper end of the supply conveyor 31. Is being worn. Vibrating sieve 1
A product conveyor 33 is disposed below the hopper 14 attached to the lower part of the container 2 so as to be inclined forward and upward. The ground height H at the tip of the product conveyor 33 is high enough to be loaded on a truck or the like. Is set to The crusher 11
Below the return conveyor 3
A third shooter 35 is provided at the rear end of the supply conveyor 31 and opens toward the rear end upper surface of the rear end.

FIG. 3 is a side view showing a state in which the power source 20 is mounted. In the figure, a gantry 21 is attached to the rear of the main frame 3, and a power source 20 is mounted on the gantry 21. A conveyor support 24 that supports a supply conveyor 31 is attached to a protruding portion 22 protruding rearward at a substantially central portion in the left-right direction of the rear end of the gantry 21.
At the lower portion of the protruding portion 22, a portion facing the return conveyor 34 is formed with an inclined portion 23 having an inclination substantially equal to the inclination of the return conveyor 34, and the inclined portion 23 and the upper surface of the return conveyor 34 are formed. Are separated by a distance enough to carry a predetermined amount of crushed material. The center of the rear end of the gantry 21 is recessed upward, that is, the lower surface of the base end of the inclined portion 23 is located above the lower end surface of the gantry 21. At this time, the gantry 21 is viewed from the side.
And the return conveyor 34 is overlapped.

In the self-propelled crushing apparatus 1 having the above configuration,
The material to be crushed is supplied to the lower end portion of the supply conveyor 31 from predetermined supply equipment (not shown) (comprising another installed crusher, a mobile crusher, or a loading machine), and is passed through the first shooter 32 to the vibrating sieve 12. And the particle size is sorted by the vibrating sieve 12. Those having a predetermined particle size or less are discharged as products from the hopper 14 to the outside by the product conveyor 33. The crushed material exceeding a predetermined particle size is supplied from the first shooter 13 to the crusher 11, where the crushed material is returned to the rear end of the supply conveyor 31 by the return conveyor 34 and supplied from the supply equipment. The crushed material is sent to the vibrating sieve 12 again. By repeating the above operation, aggregates and the like having a predetermined particle size are produced.

In the configuration described above, the position of the center of gravity of each device, the position of the traveling device, and the contact length are set as follows. That is, G is the position of the center of gravity of the self-propelled crushing device 1, and the contact length of the traveling device 4 (distance between one end (here, the front end) contact point 6 and the other end (here, the rear end) contact point 7)
Is A, and an angle formed between a perpendicular line c passing through the one-end grounding point 6 and a straight line a connecting the center of gravity G and the one-end grounding point 6 is α. The angle between a perpendicular d passing through the other end grounding point 7 and a straight line b connecting the center of gravity G and the other end grounding point 7 is represented by β.
At this time, the relationship between the positions of the ground points 6, 7 and the ground length A with respect to the position of the center of gravity G is set such that the angles α and β fall within the range of 37 ° to 90 °, respectively. The angle of 37 ° is the minimum angle determined by the present inventor based on the result of the predetermined test so that the self-propelled crusher 1 can stably run and work at the work site without any trouble. In the present embodiment, for example, α = 47 ° and β = 42 °, and the stability of the entire apparatus during traveling and work is very good even without mounting the outrigger.

Next, assuming that the horizontal distance between the center of gravity g of the vibrating screen 12 and the grounding point 6 at one end or the grounding point 7 at the other end is B, which is a device that is heavy or generates a substantially vertical force during work. The position of the center of gravity g, the contact length A, the one-end contact point 6 and the other-end contact point 7 are set so as to satisfy the expression “B / A ≦ 0.3”. Therefore, the amount of overhang of a heavy device is small and the stability is good. Note that 0.3 in the above equation
Is the maximum value obtained by the inventor based on the result of the predetermined test in a range where the fluctuation of the height H of the product conveyor 33 caused by the vibration of the vibrating sieve 12 is a value that does not interfere with the actual operation. . Further, as described above, since “α> β” in the present embodiment, the longitudinal position of the center of gravity G of the entire apparatus is located closer to the rear than the longitudinal center of the grounding length A. Therefore, the vibration generated by the vibrating screen 12 during the operation causes the entire apparatus to swing in the front-rear direction with the one end grounding point 6 as a fulcrum, and the fluctuation of the discharge height H of the product conveyor 33 becomes extremely small. . Therefore, there is no problem in the product discharge operation even if the outrigger is not grounded, and the outrigger is not required.

Further, the mounting height position of the gantry 21 and the power source 20 is viewed from the side of the rear end of the gantry 21 and the return conveyor 3.
4, the height of the center of gravity G of the self-propelled crushing device 1 can be reduced. As a result, the angles α and β described above can be further increased, and sufficient stability can be ensured. Further, since the contact length A required for securing stability in the front-rear direction can be shortened, the whole vehicle can be reduced in size and weight. This also eliminates the need for outriggers, simplifies the structure, and reduces costs. Incidentally, in the embodiment of the self-propelled crushing apparatus according to the present invention, the total length can be set to, for example, 22 m and the total height can be set to, for example, 7 m.

As described above, according to the present invention, the angles α and β between the straight line connecting the position of the center of gravity of the self-propelled crushing apparatus and the grounding points at both ends of the traveling device and the vertical lines at the grounding points at both ends are predetermined. (37 ° to 90), the center of gravity can be lowered. Thereby, sufficient stability can be ensured during traveling and work. In addition, the center of gravity of the self-propelled crusher is located on the opposite side of the vibrating screen across the center of the ground length of the traveling device, so the longitudinal vibration of the vehicle body due to the vibration of the vibrating screen is reduced, Can be performed without any trouble, and the outrigger is not required. Furthermore, since the amount of overhang from the contact point at both ends of the traveling device of a heavy device (vibrating sieve or the like) is set to a predetermined value or less, the longitudinal vibration of the vehicle body due to the vibration of the vibrating sieve can be further reduced, and the work is not hindered Yes, no outrigger is required. As a result, the structure can be simplified, downsized, and reduced in cost.

In the above-described embodiment, the traveling device has been described as an example of a crawler type. However, other traveling devices such as a wheel type may be used. It may have a traveling device. Although a cone type crusher is used, another crusher such as a jaw, a rotary, and a shear may be used.

[Brief description of the drawings]

FIG. 1 is a side view of a self-propelled crushing device of the present invention.

FIG. 2 is a plan view of the self-propelled crusher of the present invention.

FIG. 3 is a side view of a pedestal for a power source according to the present invention.

FIG. 4 is a side view showing a working posture of the self-propelled crushing device of the first example of the related art.

FIG. 5 is a side view showing a traveling posture of the first example of the conventional self-propelled crushing apparatus.

FIG. 6 is a side view of a second example of a conventional self-propelled crushing apparatus.

[Explanation of symbols]

1: self-propelled crusher, 2: body, 3: main frame,
4: running device, 5: crawler belt, 6: one end contact point, 7: other end contact point, 10: working device, 11: crusher, 12: vibrating sieve, 20: power source, 21: gantry, 23: tilt Part, 30:
Conveyor, 31: supply conveyor, 33: product conveyor,
34: return conveyor.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Hiroyuki Umeda 3-20-1 Nakase, Kawasaki-ku, Kawasaki-shi, Kanagawa Prefecture F-term in Komatsu Ltd. Construction Machinery 3rd Development Center (Reference) 4D067 DD04 DD06 GA02 GA06 GB05

Claims (3)

[Claims] 1. A vehicle body (2) having a traveling device (4), and a vehicle body
A crusher (1) mounted on (2) to crush objects such as rocks
1) and a vibrating sieve (12) mounted on one side in the longitudinal direction of the vehicle body (2) and sieving the crushed material, and a self-propelled device that discharges the crushed material selected by the vibrating sieve (12) to the outside A straight line connecting the position of the center of gravity of the self-propelled crushing device (1) and the one end ground point (6) and the other end ground point (7) of the traveling device (4); A self-propelled crushing apparatus characterized in that angles (α, β) formed by vertical lines passing through both grounding points (6, 7) respectively fall within a range of 37 ° to 90 °. 2. The self-propelled crusher according to claim 1, wherein the angle (α) at the ground contact point (6) on the side close to the vibrating screen (12) is the angle at the ground contact point (7) on the other side. Self-propelled crusher characterized by being larger than (β). 3. The self-propelled crushing device according to claim 1, wherein the horizontal distance between the one-end contact point (6) and the center of gravity of the vibrating sieve (12) is equal to the one-end contact point (6) and the other end. A self-propelled crusher characterized by being within 0.3 times the contact length with the end contact point (7).