JPS62228533A - Gravel sorter - Google Patents

Abstract

PURPOSE:To make operations by only one operator by a method in which a gravel and soil sorter is detachably attached to the side frame of an hydraulic shovel, comparatively hard and deep ground is excavated, and gravel is separated from the excavated soil. CONSTITUTION:Side frames 1b are attached to both sides of the center frame 1a of an hydraulic shovel A and a traveler 1, a rotator 3, a boom 5, an arm 7, and a bucket 9 are also provided. A gravel and soil sorter B is attached to one side frame 1b, brackets 12 are fixed to the front and back sides of the sorter B, and fitting arms 72 and 73 for the front and back sides are detachably attached. A hopper 75 to receive soil to be separated and also to direct it into a cylindrical rotator 16 is attached to a square frame 83, and a balance weight 70 is detachably attached to the other side frame 1b to prevent the falling-down of the shovel A. The efficiency of operations can thus be enhanced.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention is used to improve a surface containing gravel, to separate and use gravel in sand, or to remove gravel. Regarding gravel sorting machines.

(Prior art) For example, when improving wasteland made of gravel containing gravel into agricultural land such as an orchard or pasture, or when removing oars from agricultural land containing a lot of gravel, conventionally, a relatively small-scale In the case of improving overlying land, a hydraulic excavator equipped with a bucket lift equipped with a separation device such as a sieve is used instead of the excavation packet of a hydraulic excavator, but for improving vast overlying land, a hydraulic excavator equipped with a bucket lift equipped with a separation device such as a sieve is used. A traveling work machine was used. This conventional gravel removal machine has a configuration in which the topsoil is excavated using running force, and the excavated soil is placed in a sorting device using a conveyor shade provided in the working machine to separate the gravel.

However, since this conventional gravel remover is configured to excavate using running force, the excavating force may be insufficient in hard soil or when removing gravel to deep areas. When there was a shortage of gravel, excavation was carried out using a hydraulic excavator, and the excavated soil was transported to a gravel removal machine to separate the gravel, which resulted in the problem that two working machines and two operators were required. there were.

(Problems to be Solved by the Invention) The present invention has been made in view of the problems mentioned in section 2. (1) An object of the present invention is to provide a gravel sorting machine which allows a shovel operator to perform gravel separation work and which can also be used as a suspension body for a hydraulic excavator.

(Means for solving the problem) In order to achieve this object, the gravel sorter of the present invention is characterized in that a gravel and earth sorting device is added to the side frame of the hydraulic excavator in a detachable manner. Since a hydraulic excavator is a dedicated excavator, it can easily excavate relatively deep and hard ground. If the sorting device is removed, it can be used as a hydraulic excavator.

(Embodiment) FIGS. 1 and 2 are side views showing the entire embodiment of a gravel sorter according to the present invention, in which a sorting device B is attached to and detached from a side frame 1b of a hydraulic excavator A. It can be installed freely. As is well known, the hydraulic excavator A includes a running body l, which has the side frames lb mounted on both sides of a center frame 1a, and crawler tracks 1c mounted on the side frames ib via front and rear driving wheels, driven wheels, etc., and a center frame 1a. A rotating body 3 installed on a frame la via a rotating device 2
, a boom 5 attached to the revolving body 3 so as to be movable by a boom cylinder 4, an arm 7 attached to the tip of the boom 5 so as to be rotatable by an arm cylinder 6, and a packet cylinder attached to the tip of the arm 7. The packet 9 is rotatably attached to the packet 8.

The sorting device B has one side frame lb as follows.
mounted on. Brackets 12 are fixed to the front and rear of the side frame 1b, and each bracket 12 is detachably attached to the front and rear so that the arms 72 and 73 protrude laterally. Brackets) 76 and 77 are welded to the lower surfaces of the left and right beams 15a constituting the support frame 15, and the rear bracket 77 and the rear mounting bracket 78 provided on the arm 73 are rotatably connected by a pin 79. For mounting the front bracket 76 and the front, both ends of the tilting hydraulic cylinder 74 are rotatably connected to the bracket 80 provided on the arm 72 by pins 81 and 82, and the support frame 15 is attached by expanding and contracting the hydraulic cylinder 74. The front part of the can be tilted up and down. 75 is packet 9
The cylindrical rotary body 16 receives the falling earth and sand to be separated.
The hopper 75 is attached to a rectangular frame 83 provided at the front of the support frame 15. A balance weight 70- is detachably attached to the other side frame 1b to prevent the hydraulic excavator A from overturning and to allow stable work.

As shown in FIGS. 1 to 6, the cylindrical rotating body 16 includes a plurality of rings 25 and a plurality of rings arranged in a circular shape at appropriate intervals with respect to a disk 26 at the rear end. A cage is formed by welding to the beam 27 of
8 constitutes a gravel separation section a (that is, the net 28 has a mesh that allows gravel separation by allowing only earth and sand to pass through without passing through the net 28), and a rear portion without the net 28. is configured as a gravel falling section through which gravel can pass from the area between the beams 27.

In addition, as shown in FIG. 6, i! On the inside of 1128,
In order to increase the effect of separating gravel and earth and sand, a plurality of earth and sand scraping pieces 29 are spirally arranged at different positions in the axial direction of the cylindrical rotating body 16.

33 is a cylindrical rotating body 1 installed at the rear of the support frame 15
It is a 6-turn hydraulic motor, and the shaft 30 shown in the JS4 diagram
The output shaft is connected to. As shown in FIG. 5, a wide ring 37 is provided around the front end of the cylindrical rotating body 16.
The ring 37 is placed on the left and right receiving rollers 36, 36 attached to the rectangular frame 83, and the hydraulic motor 3
3 rotates, the ring 37 contacts and rotates on the receiving roller 36, and the cylindrical rotating body 16 rotates. Additionally, as shown in Figures 1 and 3,
On both sides of the gravel falling part, chutes 41 and 41 are installed to guide the falling position of the gravel.

Reference numeral 65 denotes a conveyor that conveys gravel falling from between shoes 41 and 41 onto a track. pin 8
The support frame 15 is connected to the rear end of the frame 65a by a chain 88, and the inclination angle can be changed by changing the working length of the chain 88. The front end is configured to be placed under the chute 41, 41, and the rear end is positioned on the loading platform of the trunk.

Operating devices for actuators such as the hydraulic cylinder 74 and the motor 33 of the sorting device B are installed in the detour chamber 90 of the hydraulic excavator A.

When using this device to improve farmland, for example, as shown in FIG. 1, the tilting hydraulic cylinder 74 is extended and the cylindrical rotating body 16 is tilted so that the front side thereof is lifted up, as shown in FIG. As shown, excavation is carried out by moving the hydraulic excavator A backward as shown by arrow C, and by operating the slewing gear 3, boom 5, arm 7, and heckent 9, and operating the hydraulic motor 33. The cylindrical rotary body 16 is rotated, and the soil W excavated by the package lift 9 is introduced into the cylindrical rotary body 16 via the hopper 75, thereby carrying out the work. Also, while rotating the conveyor 65, shoe) 41.4
The gravel that fell from between 1 and 1 is transferred to truck 6 via conveyor 65.
Do the work while dropping it onto the loading platform 1- of No. 6. Such work is carried out by the operator of hydraulic excavator A using the hydraulic motor 33.
This can be carried out by operating the hydraulic motor (not shown) for the conveyor 65, etc. If this operation is performed, the cylindrical shape will be rotated by the rotation of the cylindrical rotary body 16 in the gravel separating section a of the cylindrical rotary body 16. While the earth and sand containing gravel is being rotated in the body 16, the earth and sand fall and leave behind gravel, and the gravel is guided from between the beams 27 to between the chutes 41 and 41 at the gravel falling part where there is no net 28, and then transferred to the conveyor 65. -L and is loaded onto the dump truck 66, so that only the removed dirt remains in the groove 60.

As in the above embodiment, the inclination angle of the cylindrical rotating body 16 is: A
If the soil is of a viscous quality, the inclination of the cylindrical rotating body 16 is made gentle so that the soil stays in the cylindrical rotating body 16 for a long time, making it relatively easy to separate. In the case of fine quality, by increasing the inclination of the cylindrical rotary body 16 to shorten the time that the earth and sand stays in the cylindrical rotary body 16, it is possible to carry out a suitable sorting operation according to each fine quality. becomes.

Note that if the conveyor 65 is removed from the support frame 15 and the above operation is performed, as shown in Fig. As it falls, a layer of gravel 61 is formed on the Do layer, and on top of that, a layer of Nihi sand 62 with a thickness h = 6
It is formed over a length of 0 to 100 cm. In this way AI, A2.

A3, A4, . . . , it is possible to form a square burial ridge in which the central part of each row is raised in a chevron shape.

0'59V! J is another embodiment of the present invention, and the biggest difference between this embodiment and the 1i mini-embodiment is that a conveyor 47 is provided as a means for introducing earth and sand into the cylindrical rotating body (6). In addition, in this example, the front mounting arm lO for supporting the cylindrical rotating body 16 is attached to the side frame 1b.
It is attached to a bracket 12 welded to the bracket 12 with screws 13, and has an inverted shape with two horizontal parts 10a. The support frame 15 and the brackets 17 and 18 fixed to the arm 11 are connected by a pin. Reference numeral 23 denotes a hydraulic cylinder for tilting the support frame 15, and the bracket 20 at the upper end of the left and right vertical beams 15b of the support frame 15 is connected to the piston rod of the hydraulic cylinder 23, and the tube of the hydraulic cylinder 23 is connected to the piston rod of the hydraulic cylinder 23. Horizontal part LO of arm 10
It is rotatably connected to left and right brackets 21 of a by pins 22.

A conveyor 47 is attached to the front part of the support frame 15 by the mechanism described below. That is, one side of the conveyor frame 48, which has drive teeth 1j driven by the drive hydraulic motor 50 of the conveyor 47 and a driven gear (both not shown) attached to both ends thereof, is tiltable about the bin 49 on the vertical beam 15b. The rear end of the conveyor 47 is located on the chute 38 inside the cylindrical rotating body 16, and the bracket 51 fixed to the upper end of the vertical beam 15b of the support frame 15 has a hydraulic conveyor tilting cylinder 52. One end is connected by a bin 53, and the conveyor tilting cylinder 52
An additional rod 54 is integrally connected to the piston rod of the conveyor frame 48 , and is connected to the front end of the conveyor frame 48 by a pin 55 .When the conveyor tilting cylinder 52 is expanded or contracted, the conveyor frame 48 . In other words, the conveyor 47 is connected to the pin 49
It is configured to tilt around the center. Furthermore, a hopper 57 supported by a frame assembled with rods 56 is attached to the conveyor frame 48, and by directing the lower end opening of the hopper 57 onto the conveyor 47, the earth and sand from the packets 9 can be removed from the conveyor 47. It is designed so that it can be dropped without leaking.

Furthermore, as shown in FIG. 10, the conveyor 47 of this embodiment has an L between the left and right links 47a connected like a chain.
Each of the horizontal beams 47b in the shape of a letter is constructed by welding,
By forming a gap G between each horizontal beam 47b that is large enough to allow earth and sand to fall but prevent gravel from falling, the conveyor 47 also performs a gravel separation function.

Note that depending on the soil quality, a rubber screen conveyor may be used as the conveyor 47.

If the conveyor 47 is provided as in this embodiment, the discharge position of the packets 9 can be set downward, so there is no need to lift the packets 9 high, and the packets are placed in front of the cylindrical rotating body 16 of the sorting device B. Since earth can be removed from 9, work efficiency is improved. Further, by providing the conveyor 47 with a gravel separation function, the ability of the gravel molecules 114 in the entire sorting device can be increased.

2 shows an example in which separated gravel is buried in the lower layer of a ridge, but as shown in Figure tSl1, a conveyor 65 is attached to the side frame 1b via arms 63 and 64, and the conveyor One end of 65 is connected to the cylindrical rotating body 1
6? By positioning it under the J-dropping part and positioning the other end on the bed of the dump truck 66, the separated gravel can be transported to another location by the dump truck 66.

Further, as shown in FIG. 12, the side frame 1b and the above-mentioned mounting are supported at both ends on the arm 10, and
It is also possible to attach the screw blade 67 to a full water rock and perform the work while rotating the screw blade 67 by the motor 68.

(Effects of the Invention) As described above, in the present invention, a sorting device for separating gravel is removably attached to the side frame of a hydraulic excavator, so the hydraulic excavator can be used to clean land with relatively hard soil. Even when carrying out soil improvement or soil improvement in deep areas, gravel separation can be carried out by one hydraulic excavator operator using one work machine.
Labor saving and equipment cost reduction are achieved. Furthermore, since the hydraulic excavator and the sorting device are always integrated and close together, the work can be done more efficiently than if they were separate. Moreover, if the sorting device is removed, the hydraulic excavator can be used as a stand-alone hydraulic excavator, so one hydraulic excavator can serve two purposes.

[Brief explanation of drawings]

Fig. 1 is a side view showing one embodiment of the gravel sorter according to the present invention, Fig. 2 is a plan view of Fig. 1, Fig. 3 is a partially omitted rear view of Fig. Side sectional view of an example cylindrical rotating body,
FIG. 5 is a front view showing the support structure of the front part of the cylindrical rotating body;
Fig. 6 is a front sectional view showing the internal structure of the cylindrical rotating body, and Figs. 7 and 8 show the state in which gravel separation work is being performed using the machine of this embodiment, respectively. FIG. 9 is a side view showing another embodiment of the present invention. Fig. 10 is a side view showing the conveyor used in the embodiment of Fig. 9, Fig. 11 is a qL view showing an application example of this embodiment, and Fig. 12 (A) shows an application example of this embodiment. Side view once (B
) is a plan view showing a part thereof. Patent applicant Hitachi Construction Machinery Co., Ltd. and one other agent Patent attorney Masami Akimoto and one other person Figure 4 Figure 5 Figure 6]

Claims (1)

[Scope of Claims] 1. A gravel sorting machine, characterized in that a gravel and earth sorting device is detachably attached to a side frame of a hydraulic excavator via an attachment arm. 2. The sorting device is composed of a support frame attached to the mounting arm and a member attached to the support frame through which earth and sand can pass but not gravel, and is installed toward the front and back direction of the hydraulic excavator. a cylindrical rotating body which is tiltably installed, a guide means for introducing earth and sand containing gravel to be sorted into the cylindrical rotating body, and a gravel falling part provided at the rear of the cylindrical rotating body. and a drive device for rotating the cylindrical rotating body. 2. The gravel sorter according to claim 1, further comprising: a drive device for rotating the cylindrical rotating body. Gravel sorting machine used. 3. The gravel sorting machine according to claim 1 or 2, characterized in that a balance weight is detachably attached to a side frame opposite to the side frame on which the sorting device is attached.