JP2554916Y2 - Compact shovel compaction device - Google Patents

Description

[Detailed description of the invention] Industrial application This invention is a small excavator, in addition to a working device pivotally supported at the front end of the upper frame, the same machine has a rolling function and can be rotated up and down and stored The present invention relates to a small excavator to which a compaction device is attached.

2. Description of the Related Art In recent years, there has been a tendency for a small excavator capable of performing mechanized construction instead of conventional manual construction even in earthworks in a narrow place.

For example, in urban civil engineering work, residential land construction, greening work, etc., there is no limit to the enumeration of gas and water pipe burial, alley excavation and backfilling, drainage trench excavation, foundation excavation, transplantation, etc. We are in a situation where we can no longer rely on human power.

In response to these demands, for example, a method of reducing the size of the excavator body to the limit as illustrated in FIG. 8 has been taken, and furthermore, when turning the work equipment, it is sufficient if there is a space of about the length of the body. Small excavators are also emerging.

On the other hand, it is possible to run in such a narrow passage by itself, reach the work site, and perform work such as excavation, but the main work of this type of machine is, as mentioned above, underground burial in a certain limited space Drilling and digging of structures and structures. After these are installed, backfilling work and compaction work of the backfilled embankment will occur as required. Conventionally, such post-processing work involves once returning a small excavator from the work site to the nearest open space and introducing a vibrating roller, compactor, etc., or manually installing a hand-held rammer, compactor, etc. I was relying on.

The problem to be solved by the present invention Most of the work to perform mechanized construction instead of human labor on a small work shovel as described above on a narrow work site, as mentioned earlier, underground burial pipe work, foundation excavation, It is trench excavation and the backfill work accompanying these.

Here, as an example, gas, water and sewage service branch pipes,
In underground pipe work, first, a trench with a predetermined width and depth is excavated with a working device, curing water is laid in some cases, the buried pipe is installed at a specified position, and then buried with excavated soil or soil. However, these soils only fill the excavation trenches in a loosened state, and naturally sink down with the date and time, creating a recess. Although it is necessary as described above, when the approach route of the machine and the work site are narrow and the approach route is long, it takes time to replace the excavating machine and the compacting machine, However, there is an inconvenience that construction cannot be performed for a short time unless a plurality of different types of machines are prepared. Therefore, in this invention, even in the construction work as in the above-mentioned reference, a new machine for compaction is prepared, and in order to eliminate the necessity of introduction, a compaction device that can be always attached as a small excavator attachment is used. The task is to provide.

Means for Solving the Problems The present invention has taken the following means to solve the above problems. That is, an arm member having one end pivotally attached to a bracket on a traveling frame of a small shovel, a rolling device main body pivotally supported on a free end side which is the other end of the arm member, and a buffering device attached to the rolling device main body. A rolling element attached via a member, a vibrating body incorporated in the rolling element, a rotating means for rotating the arm member up and down with respect to the traveling frame; An angle setting means for fixing the apparatus body to the arm member at an arbitrary angle is provided.

The arm member until the rolling element provided on the lower surface of the rolling device body contacts the bottom surface of the excavation groove or the earth and sand appropriately filled from the ground height after backfilling the groove at a periodic height or angle. After adjusting the angle between the main body and the compacting device, lowering the arm member with the cylinder, operating the operating device, and operating the vibrating device while moving the machine along the groove, There is a cushioning member between the compacting device body and the compacting body compacts the bottom of the groove or the excess embankment in contact with the lower surface without directly vibrating the compacting device body.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings. First
FIG. 2 is a small shovel equipped with the compaction device of the present invention and equipped with a backhoe as a front attachment.

In the drawing, reference numeral 1 denotes a traveling device having a member for supporting the upper frame 3 on the upper side and including left and right crawlers, a driving device thereof, a guide device, and the like, and a boom, an arm, A work device including a bucket, a cylinder for rotating them vertically and horizontally, a drive link mechanism, and the like is pivotally mounted, and a traveling device 1, a work device 5, and other power sources for operating auxiliary devices and an operation for controlling the work device are provided above. Power plant 2 consisting of equipment 4 etc.
It is equipped with.

The main strength members of the traveling device 1 are a track frame serving as a basis for the left and right crawlers to regularly rotate forward and backward while maintaining a fixed position, cross members before and after firmly connecting the left and right track frames, and a reinforcing member. The traveling frame 6 is composed of
A bracket 15 is fixedly mounted on the front surface of the fuselage front side cross member on the left side of the figure, and the bracket 15 has an end of an arm of the dozer device 9 and a cylinder 10 for vertically rotating the dozer device 9. The bracket 16 is mounted on the right side of the figure, that is, on the rear side of the cross member behind the fuselage.
The bracket 16 has one end of the arm member 7 and a cylinder 12 for vertically rotating the arm member 7 pivotally supported, and is fixed to the other end of the arm member 7. The rolling device 8 is rotatably connected to the boss 17 (shown in FIG. 3). Then, FIG. 1 shows that the rolling device 8 is folded and brought into contact with the upper surface of the arm member 7,
FIG. 2 is a side view showing a stored state in which the arm member 7 is rotated downward by the cylinder 12 and the pressure member 8 is rotated and extended. FIG. 4 is a side view showing a time posture, in which the lower surface height of the pressure roller can be adjusted by expansion and contraction of a cylinder 12, and the relative angle between the arm member 7 and the pressure roller 8 is also adjusted as described later. It is possible.

Next, the relationship between the structure of the above-described rolling device 8 and the arm member 7 will be described in detail with reference to FIGS. FIG. 3 is a side view when the arm member 7 and the rolling device 8 are set at an arbitrary relative angle, and FIG. 4 is a plan view of FIG. 3 as viewed from above. As is clear from the figure, one end of the arm member 7 and one end of the cylinder 12
Because it is pivoted on 16, the cylinder 12 expands and contracts,
The arm member 7 rotates up and down and can hold a predetermined position. The rolling device 8 is rotatable by a pin 18 inserted through pin holes of brackets 22 and 23 fixed to the rolling device main body 21, and within a predetermined angle range by an angle setting means 19 described later. The relative angle between the arm member 7 and the rolling device 8 can be fixed to a desired value.

Although the rolling device main body 21 is a rigid box, the upper surface in FIG. 3 is flat and can be mounted, but the lower surface is provided with an open space, and the rolling device incorporating the vibration generator 13 is provided. body
11 is accommodated in the release space via the buffer member 14, and the lower surface of the rolling element 11 slightly projects from the rolling device main body 21.

In addition, as a power source of the exciter 13, pressure oil obtained from the power plant 2 of a small excavator or an external power source may be used.
What is necessary is just to respond according to work conditions.

Next, an example of the structure of the angle setting means 19 and its adjustment will be described with reference to FIGS. FIG. 5 is an enlarged side view of the means, and FIG. 6 is a plan view of FIG. 5 viewed from above.

In these figures, reference numerals 22 and 23 denote brackets fixed to the compacting device main body 21. A pin 18 is inserted through a pin hole in a central portion, and is rotatable around the pin 18 with respect to the boss 17 of the arm member 7. As described above, the brackets 22 and 23 are further provided with bolt holes centered at a plurality of locations on the concentric pitch circle A with the center of the pin 18.
_{a 1, a 2, a 3} ......, a n and bolt holes _{b 1, b 2, b 3} , ......,
b _n penetrates, and at the same time, on both side surfaces of the arm member 7, screw blocks 24 and 25 having a screw hole in the center are provided on a surface corresponding to the bracket 22 and a surface corresponding to the bracket 23, respectively. At a certain angle between the arm member 7 and the compacting device main body 21, one of the screw holes of the screw block 24 and the plurality of bolt holes on the bracket 22, and the screw hole of the screw block 25 and the bracket One of the plurality of bolt holes on 23 matches, and the adjusting bolt 20 is screwed into this,
An angle setting means which can fix the rolling device 8 to the arm member 7 at that angle and which can be easily realized by changing the screwing position of the adjusting bolt 20 when changing the angle is formed. The bolt holes a ₁ , a ₂ ,
a ₃ ......, a _n and bolt holes b ₁ on the bracket 23, b _2, b _3,
By shifting the drilling position with..., B _n by 1/2 pitch, the number of bolt holes, n, can be set in 2n steps, and practical effectiveness is further obtained. .

The operation of the small shovel having the above configuration will be described.

In the case of self-propelled on the approach path to the work site or self-propelled for site movement, as shown in FIG. 1, the rolling device 8 is stored on the arm member 7 and operated by the operating device 4, Cylinder 1
0, 12 to raise both the dozer device 9 and the arm member 7 so that they do not interfere with the ground during running.
It is needless to say that the vehicle is driven with an appropriate height and posture.

Next, as an example of using the rolling device of the present invention, a construction procedure when installing the buried pipe 32 as shown in FIG. 2 will be described.

After the small excavator is introduced into a narrow work site by self-propelled operation in the posture shown in FIG. Excavation and burial pipe
32 is installed at a predetermined depth, but sometimes it is necessary to fill the soil above and below it, and further backfill it with earth or excavated soil as excavation material above it. When the amount of the backfill soil is relatively large, it is the same as the prior art that the dozer device 9 is used to backfill with the driving force of the fuselage as much as the space allows, and to assist the shaping with human power. . The backfilled soil at this time is a so-called loosened soil state, and simply backfilling the ground to the same height as the ground around the excavation trench causes the excavation trench surface to sink due to natural compaction and to be repaired at a later date. It causes inconvenience such as doing. Therefore, at the time of the above-mentioned backfilling operation, the surplus embankment 31 is raised in a ridge shape above the excavation trench. Then, in the state where the small embankment straddles the extra embankment 31, the traveling direction and the longitudinal direction of the groove are made parallel, the cylinder 12 is extended and lowered together with the arm member 7 and the compacting device 8, and The angle is adjusted by the angle setting means 19 shown in FIGS. 5 and 6, and the lower surface of the rolling element 11 shown in FIGS.
By setting the machine so that it is almost parallel to the ground and moving the machine while operating the vibration exciter 13,
To the ditch. Also, depending on the compaction situation,
If there is excess or deficiency in 31, remove or supplement as appropriate and repeat the compaction. Also, in some cases, when the backfilled soil above the buried pipe 32 is not desired to be compacted so strongly,
The surface of the overburden 31 may be finished by stopping the operation of the vibrating device 13 or moving the machine only by applying an operator or other weight on the compacting device main body 21. In the case described above, the adjustment bolt 20 in FIGS. 5 and 6 may be removed and used.

FIG. 7 is a plan view showing a modification of the rolling device constituting the present invention. In this drawing, the rolling device 26 has a total width larger than the groove width W so that the rolling device 26 can be easily dropped into a digging groove. I made it smaller. Therefore, the rolling element 27 and its mounting cushioning member
29, although the shape, dimensions, mounting method, etc. of the vibrating device 28 are different from those in the previous embodiment, the arm member 7 and the angle setting means 19 are completely the same, and their functions do not change, but the purpose of use is naturally different. In some cases. For example, because the buried pipe 32 is at a deep position below the ground surface and the soil cover depth above it is large, when each layer rolling is necessary, or when it is necessary to pre-roll the groove bottom 30, The cylinder 12 is further extended to rotate the arm member 7 downward, and the angle
The rolling operation is performed such that the lower surface of 11 is in contact with the rolling surface.

9 and 10 are side views when the compacting device of the present invention is mounted on a smaller-sized excavator than the compact excavator in the above embodiment, and FIG. 9 is a diagram other than the traveling or compacting work. FIG. 10 shows a state where the backfill soil after burying the buried pipe 32 is being compacted, as in the above embodiment, and Although there is basically no difference in the method of mounting the compacting device to the machine body, the operating mechanism, the configuration, etc., the small shovel shown in this figure has a full length and full width so that it can work even in a particularly narrow place. In order to minimize the operation, the operation of the working device, the movement of the fuselage, and other operations are performed at the top of the machine and performed by the operating device 36, and the operating seat of the operating device 36 is not particularly provided. Stand and operate the operating device 36 while walking as the machine moves. Therefore, the rolling device 34 pivotally attached to the free end of the arm member 33 which rotates up and down by the expansion and contraction of the cylinder 35 is provided by the angle setting means 19 or similar means in the above embodiment as shown in FIG. It can be stored. As shown in FIG. 10, when the excess embankment is compacted, the compaction device 34 is rotated downward, set at a predetermined angle with the arm member 33, the cylinder 35 is extended, and the arm member 33 is compacted by the compaction device.
Lower with 34 to achieve the desired finish. In the operation other than the rolling operation, that is, in the case of FIG. 9, the rolling device 34 is appropriately rotated downward, and the lower surface thereof is lowered to the extent that the lower surface does not interfere with the ground. The rolling device 34 is operated during the rolling operation as shown in FIG.
Even if the user rides on the top and performs various operations in the same manner as described above, or applies a force to the rolling device 34 from above, there is no problem in any way.

In the drawings showing the above-described embodiments, only a machine in which the traveling device is a crawler type has been described. However, the present invention is not limited to this. It may be a shovel,
At this time, it is sufficient to use an arm member and a cylinder adapted to the body structure.

Effects of the Invention A small shovel equipped with the device according to the present invention can, of course, enter a narrow passage and work at a narrow work site as in the past, but a new compaction device is additionally provided. Therefore, it is not necessary to introduce a new dedicated rolling machine at the site for rolling work including the rolling of backfilled earth and sand that occurs during normal shovel work. The rolling can be performed, and the rolling can be performed without any labor and can be performed without waste. In addition, by matching the shape and dimensions of the compacting device to the working conditions, it is easy to compact the bottom of the excavated trench, each layer of soil and backfill soil, and to achieve ideal construction quality in small-scale construction. I can guarantee it.

[Brief description of the drawings]

1 and 2 are side views of a first embodiment of a small shovel equipped with the compaction device of the present invention. FIG. 1 shows a compaction shovel when the compaction device is not used, and FIG. FIG. 3 is a side view showing a state during the operation, FIG. 3 is a side view showing an arm member and a rolling device and a structure for attaching them to the body, FIG. 4 is a plan view of FIG. 3 viewed from above, and FIG. FIG. 6 is an enlarged side view of the angle setting means (19) in FIG. 3, FIG. 6 is a plan view of FIG. 5 viewed from above, FIG. 7 is a plan view of another embodiment of the rolling device, FIG. The figure is a side view showing an example of a small shovel serving as a base machine to which the compaction device of the present invention is attached, and FIG.
Fig. 10 and Fig. 10 both show a second embodiment of a small shovel equipped with the compacting device of the present invention. Fig. 9 shows a case where the compacting device is not used. It is a side view showing a state. 1 traveling device 6 traveling frame 7,3 arm member 8,26 rolling device 11,27 rolling device 13,28 vibrating device 14,29 cushioning member 15, 16 Bracket 19 Angle setting means 22, 23 Bracket 24, 25 Screw block

Claims (1)

(57) [Scope of request for utility model registration] 1. An arm member having one end pivotally attached to a traveling frame, a rolling device main body pivotally supported on a free end, which is the other end of the arm member, and a buffer member mounted on the rolling device main body. A rolling element mounted via a pressure generator, a vibrating body incorporated in the pressure rolling device main body, and rotating means for rotating the arm member up and down with respect to the traveling frame; The compacting device of a small shovel, characterized in that the compacting device main body can be fixed to the arm member at arbitrary multi-step angles.