JPS5853340Y2 - Vertical trench excavator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a trench excavator, and more specifically to a vertical trench excavator equipped with a permeable material storage tank that is connected to a tractor so as to be movable up and down.

In order to improve the drainage of fields, work is being carried out to form drainage ditches and lay a layer of water-permeable material such as rice husk at the bottom of the ditch, or to lay drainage pipes such as corrugated pipes together with the water-permeable material.

By the way, in the case of a vertical trench excavator equipped with a water-permeable material storage tank that is connected to a tractor so that it can be raised and lowered, the water-permeable material storage tank was conventionally installed immovably in the machine frame at the rear of the vertical trench excavation work section. When driving the tractor on the road with the excavator elevated, the ground clearance of the trench excavator was insufficient.

This tendency was particularly significant for those with a vertical trench excavation section.

Therefore, in order to increase the ground clearance, it is possible to raise the vertical ditch excavation working section by tilting it backwards and locking it before lifting it, but the tank becomes an obstacle and the working section cannot be lifted. Couldn't lean backwards.

Therefore, if the tank is attached to the machine frame so that it does not become an obstacle even if the working part is tilted backwards, the momentum tank will lean toward the rear of the machine frame, which will impair the front-rear weight balance, and when lifted , there is a problem that the water-permeable material inside the tank tends to leak in large quantities.

The present invention was devised in view of the above points, and it is a vertical trench excavator equipped with a permeable material storage tank that has a good front-to-rear weight balance while increasing the ground clearance. The purpose is to minimize the leakage of information as much as possible.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Reference numeral 1 denotes a wheeled tractor, which has a hydraulic lifting device 3, a seat 4, etc. on its body 2, and has a trench excavator 6 attached to it by a three-point link 5 to be able to move up and down.

The trench excavator 6 mainly includes a main frame 7, a vertically elongated working part 8 held rotatably around a horizontal axis by the main frame 7, and a tank 9 for storing a permeable material such as rice husk.

The main frame 7 has a pair of left and right lower link brackets 10.
The upper parts of the vertical substrates 11 fixed in the front are firmly connected by flange bolts or the like with the horizontal rods 12 having a cylindrical shaft structure, and the vertical support masts 13 are attached to the front of each of the lower link brackets 10. A pair of horizontal rods 12 are provided.
A top mast 14 is provided to stand forward from the center of the axial length, and connects the top mast 14 and the support mast 13 to each other.

Furthermore, cylindrical shaft supports 15'' parallel to the horizontal rods 12 are fixedly extended inwardly from each other at the opposite lower part of the vertical base plate 11, and a forward flange 16 is fixed to each inner end of the cylindrical shaft supports 15. ing.

The vertical working part 8 includes a transmission case 18 equipped with a power receiving shaft 17 on the upper part, a transmission body such as a gear built into the transmission case 18, an auger cylinder 19 detachably connected to the lower part of the transmission case 18, and an auger cylinder 19. It is composed of a working tool 20 using a stored screw auger, a soil removal plate 21 provided at the rear of the auger cylinder 19, etc., and the working tool 20 is connected to a power receiving shaft 17.
It is driven around a vertical axis by interlocking and connecting the tractor PTO shaft 22 with a universal joint shaft 23, and its excavation depth is relatively long, for example, 1 m.

A pair of left and right support arms 2 are provided on both sides of the transmission case 18.
4 are connected in series, and a joining flange 2 is provided at the extending end of the arm 24.
5 are connected in series.

A rearward flange 26 is connected to each of the joining flanges 25 by bolts 27, and rear portions of the rearward flanges 26 are connected to each other by a support tube 28.

Furthermore, an inner cylindrical shaft 29 is provided on the rearward flange 26 and extends outwardly on the extension of the axial center of the support arm 24.
9 is fitted into the cylinder shaft support 15 of the main frame 7.

Cylinder shaft support 15 of main frame 7 and inner cylinder shaft 2 of working part 8
An intermediate cylinder shaft 30 is fitted and held between the cylinders 9 and 9 so as to be relatively rotatable.
A sliding flange 31 having a length extending from the front flange 16 on the main frame 7 side to the joining flange 25 on the working part 8 side is fixed to each inner end of the intermediate cylinder shaft 30.

Here, the working part 8 is rotatable about the horizontal axis of the triple-shaft configuration with respect to the main frame 7 side.

Reference numeral 32 denotes an elastic biasing positioning device, which is provided between the sliding flange 31 and the joining fluff 25.

That is, an ammunition storage cylinder 32' is fixed outwardly on the outside of each of the pair of left and right sliding flanges 31, and an ammunition storage cylinder 32' is housed therein so that the spring pressure can be freely adjusted using a screw adjuster 34. 31 is fitted with a rolling locking body 35 so that the spring pressure of the bullet 33 is propagated through the receiver 33', and the rolling locking body 35 is fitted to the joining flange 25 in the embodiment of the two positioning elements. It can be freely engaged and detached from the recess or hole 36.

Note that the positioning hole 36 is provided on the horizontal axis rotation locus at an angle A of about 15° as shown in FIG. When a load is applied, the attachment is released and the working part 8 rotates around the horizontal axis, and is positioned by elastic bias using the joining flange 25 and the sliding flange 31 as guide surfaces.

Note that the positioning device 32 is provided corresponding to the support cylinder 28, and a bullet 33 is used here to prevent the joining flange 25 from separating from the sliding flange 31.

Furthermore, sliding flanges 3 corresponding to the upper and lower sides of the joining flange 26
1 is fixed with a vertical limit stopper 31A.

Reference numeral 37 denotes a working part lifting/lowering positioning device, which connects the front flange 16 on the main frame 7 side and the front fan-shaped portion 3 of the sliding flange 31.
It is provided between 8 and 8.

That is, in the embodiment, positioning holes 39 and 40 are provided at an angle B of 45° as shown in FIG.
On the other hand, the engaging body 41 enters and exits the front flange 16 (L42
When the engaging body 41 is engaged with the hole 39, it can be used to lock the working part 8 during work, and when the engaging body 41 is engaged with the hole 40, it can be used for locking during transportation. ing.

In other words, during transportation, the working part 8 is raised greatly in an upward motion,
And it locks securely.

The engaging body 41 is urged in the engaging direction by a bullet 43,
Further, an engagement release body 44 is pivotally attached to the engagement body 41, and a link 45 is used between the release bodies to pivot to the front flange 16, and the front end extends near the seat 4. can be operated in the direction of the arrow in FIG.

Note that vertical regulating stoppers 38A are fixedly provided at the top and bottom of the fan-shaped portion 38 to correspond to and engage with the top and bottom of the forward flange 16.

Further, the storage tank 9 described above preferably has a shutter device 46 at its lower discharge port 45, and a pair of left and right parallel links 47 are provided on the main frame 7 side so that the discharge port 45 is located above the passage of the working section 8. A check arm 48 is pivotally connected to the parallel link 47 and the working part 8 side.

That is, the suspension rods 4 are placed midway between the left and right on the horizontal rods 12 of the main frame 7.
9 is installed rearward, and this suspension rod 49 and both sides of the tank are pivotally connected by a parallel link 47, and in the embodiment, a check arm is provided between the middle of the lower parallel link 47 and the earth removal plate side. 48 is connected thereto, and the tank 9 is configured to maintain a horizontal attitude even when the trench excavator 6 is lifted up.

Next, trench digging work, transportation work, etc. will be explained.

During the trench digging work shown in FIG. 1, the working part 8, which is rotatable about the horizontal axis of the triple-shaft structure on the main frame 7, is in a slightly downwardly inclined or vertical position, and this position is maintained by the lifting and lowering positioning device. 37 engages with the hole 39 to fix the forward flange 16 and the sliding flange 31, while the sliding flange 31 and the joining flange 25 on the working part 8 side are connected to the elastic biasing positioning device 32. Since the rolling locking body 35 is recessed into the lower hole 36, it is held.

The working part 8 is driven around the vertical axis, and the excavated soil is raised by the cooperation of the auger tube 19 and the working tool 2, and is removed, and the earth removal plate 21 fills the groove ■ with soil, while the soil is piled up in the groove ■. The rice husks, etc. stored in the tank 9 are put into the tank 9.

During work, if the work tool 20 encounters a hard soil layer, gravel, etc.
An abnormal load indicated by arrow F in FIG. 1 is applied.

If this load F is equal to or greater than the set value adjusted to an appropriate value by the screw adjuster 34 of the positioning device 32, the ammunition 33 is deflected.
As the rolling locking body 35 is disengaged from the hole 36, the inner cylinder shaft 29 of the working part 8 rotates around the horizontal axis within the intermediate cylinder shaft 30, and in the embodiment, the inner cylinder shaft 29 rotates by 15 degrees as shown by the chain line in FIG. The working part moves back at an angle, thereby avoiding the load F.

After avoiding the load F, the working part 8 is returned to its original state by its own weight, etc.

When a predetermined work is completed or when turning on a headland, etc., the entire trench excavator 6 is lifted up via the three-point link 5, etc., but at this time, the engaging body 41 of the positioning device 37 is 4 by operating the release body 44, and the working part 8 is made free with respect to the main frame 7 around the horizontal axis rotation holding parts 15, 29, and 30.

Then, when the tractor 1 is moved forward, the lower end of the working part 8 is retreated rearward around the horizontal shaft rotation holding part 15, 29, 30, and it assumes a downward descending non-working position, and this position is maintained by the engaging body 41. is automatically dropped into the hole 40 by the bullet 43 and locked.

At this time, the tank 9 pushes up the parallel link 47 by the check arm 48, and the tank 9 is lifted up while moving in parallel.
Here, leakage of the contents is prevented.

After doing this, the entire trench excavator 6 will be lifted up, but since the working part 8 is in a backward downward position,
The height above the ground can be increased, and since the tank 9 is once elevated while being moved in parallel, even when the trench excavator 6 is lifted, the amount of forward movement of the tank 9 is small, reducing spillage of contents.

When the trench excavator 6 is lowered, the process is reversed, and the tank 9 is pulled in by the restraining arm 48-, and the working part 8 is locked in a substantially vertical working position by the positioning device 39.

This invention is a vertical trenching machine with a permeable material storage tank that is connected to a tractor so that it can be raised and lowered, in which the vertical trenching working part rotates with respect to the main frame of the trenching machine via a horizontal shaft rotation holding part. A positioning device is provided which is freely attached to the working part and switches and locks the working part between a substantially vertical working position and a non-working position with the lower end of the working part facing backward and a downward slope. A vertical trench excavator characterized in that a water-permeable material storage tank is supported on the main frame via a parallel link so that it can be raised and lowered at the rear upper part of the machine, and the parallel link and the working section side are pivotally connected by a restraining arm.

It has the following advantages:

The vertically long groove digging working section can be switched between a substantially vertical working position and a downward descending non-working position via the horizontal shaft holder on the main frame, so when lifting the entire trench excavating machine, the working section The ground clearance can be increased by once lowering the rear and locking it, and then lifting it up.

In addition, when the working part is moved backwards, the tank is moved backward by the restraining arm by pushing up the parallel links that support it, so there is no leakage of the contents and the tank is moved backwards. In addition, even if the tank is not provided so as to protrude greatly rearward, it will not become an obstacle when the working section slopes downward at the rear, so that a good front-rear weight balance can be ensured.

In addition, in the example, a case where only a water-permeable material is immersed in a layer in the groove (2) is shown, but the present invention can also be applied to a type in which a corrugated pipe or the like is laid together with the water-permeable material. It will be more effective if an auxiliary device is provided extending rearward to backfill the soil piled up on the shoulder of the trench after the trench has been laid.

[Brief explanation of drawings]

Figure 1 is a side view of the entire project during work, Figure 2 is a plan view of the trench excavator, Figure 3 is a cross-sectional plan view of the joint between the main frame and the working part, and Figure 4 is the side of Figure 3. The cross-sectional view and Figure 5 are during transportation (
FIG. 6 is a side view of the main part during lifting. FIG. 6 is a side view of the entire part during lifting. 6... Grooving machine, 7... Main frame, 8
...Working part, 9...Tank, 15,2
9.30...Horizontal axis rotation holding part, 47...
・Parallel link, 48... Check arm.

Claims (1)

[Scope of utility model registration request] In a vertical trenching machine equipped with a permeable material storage tank that is connected to a tractor so that it can be raised and lowered, a vertical trenching working part is rotatably attached to the main frame of the trenching machine via a horizontal axis rotation holding part. A positioning device is provided for switching and locking the working part between a substantially vertical working position and a downwardly inclined non-working position with the lower end of the working part facing backward. A vertical trench excavator characterized in that a material storage tank is supported by a main frame via a parallel link so as to be able to rise and fall freely, and the parallel link and a working part side are pivotally connected by a restraining arm.