JPH0355619B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to carrying and transporting concrete blocks, soil blocks, excavated soil blocks, etc. piled up at a construction site,
A self-propelled device with a tree transplanting device that is used for transferring trees to a waiting truck or transplanting a tree (hereinafter referred to as a tree transplanting device) is attached to a self-propelled main motor such as a bulldozer for general use. Regarding the main engine.

[Prior Art] Conventional construction machines for collecting and transporting piled-up concrete lumps, earth lumps, excavated earth lumps, etc. by themselves include power shovels, backhoes, tractor shovels, and the like.

Furthermore, conventional tree transplanting devices that are attached to self-propelled main engines such as bulldozers include, for example, the tree transplanting machine described in Japanese Utility Model Publication No. 53-23644,
There are a tree transplanting method and a device therefor described in Japanese Patent Publication No. 57-55371, a tree transplanting device described in Japanese Utility Model Application Publication No. 60-36060, and a tree transplanting device described in Japanese Patent Application Publication No. 60-137215.

[Problems to be Solved by the Invention] All of the conventional construction machines described above suffer from variations in the capacity because they simply scoop or scrape up from one direction in order to collect soil clods, concrete lumps, etc. into the bucket by themselves. Since the clods of earth and concrete that have been accommodated in large quantities are not held in any way, the clods of soil and concrete that have entered the bucket are easily spilled out, and despite the large capacity of the bucket, the capacity is small and the efficiency is low. During transport, large shakes and vibrations can cause the product to fall and scatter into the surrounding area. In addition, it is extremely difficult to accommodate large irregularly shaped concrete blocks, rocks, and stumps in buckets, resulting in poor work efficiency.

However, in the case of the above-mentioned conventional tree transplanting devices, the work is carried out by swinging a pair of buckets on the left and right or a pair of fork-shaped excavating and carrying claws on the left and right in the horizontal direction. When attempting to insert the right and left buckets or a pair of right and left fork claws from both sides, the horizontal opening swing will extend beyond the width of the self-propelled main motor, so if trees are densely populated, thinning and transplanting may be necessary. This was impossible, and the structure attached to the self-propelled main engine was large and heavy, and the maneuverability in small turns was poor, making it difficult to transplant on slopes. To dig up the roots of a tree and transport it to the transplant site, it is either carried on a waiting truck, or
When transporting roots using buckets or fork claws in places where trucks cannot enter or without using trucks, the weight of the tree is added, so the self-propelled main engine becomes immersed in the situation, with one of the front and rear parts floating or in a seesaw state. This makes driving extremely unstable and dangerous, especially on uneven or sloping areas.During transportation, not only can the roots be damaged by dragging on the ground, but the ground can also be significantly scraped after being dragged. The remaining ground requires post-leveling treatment, and during transportation, the tree's center of gravity is biased towards the top, which cannot be supported, causing the tree to lose its balance and fall to the front of the open side of the planar U-shaped mounting frame, causing the self-propelled main motor to overturn together with the tree. There is a lot of concern, and the current situation is that no safety measures have been taken to prevent accidents resulting in injury or death.

Here, the present invention is small, lightweight, and compact, and has excellent maneuverability in small turns, and can easily work even in densely treed areas and slopes where there is at least enough width for a self-propelled main engine to enter, and when transporting trees, the roots can be placed on the ground. It is an object of the present invention to provide a self-propelled main motor equipped with a work device for tree transplantation, etc., which does not cause the self-propelled main motor to sink into a behavior such as dragging on the ground.

[Means for Solving the Problems] The above-mentioned problems can be solved by the self-propelled main motor with a tree transplanting work device of the present invention, which is equipped with a self-propelled main motor such as a bulldozer through a fluid pressure-operated lifting/lowering mechanism. In a tree transplantation work device to which a mounting back frame is pivotally attached, a fluid pressure actuator is attached to the front ends of the left and right rear side arm links that extend forward from the upper ends of both left and right sides of the mounting back frame by opening the entire length upward and slanting to the outside. A pair of left and right front buckets operated by fluid pressure are connected to the tips of a pair of left and right toggle side arm link mechanisms in which the rear ends of the left and right front side arm links are pivotally connected so as to be able to rotate forward and backward. At the same time, after the lower end of the front side of the mounting back frame is operated by fluid pressure in the width direction, the bucket is pivoted and hung facing forward so as to be able to swing back and forth and rotate freely. This is achieved by employing the above configuration means.

[Operation] Since the present invention takes the above-mentioned configuration means,
During the transplantation work, the pair of left and right toggle side arm link mechanisms that extend forward from the upper ends of the left and right sides of the mounting back frame are slanted outward at the top of their entire length. When the side arm link and the left and right front buckets are swung forward and rotated, the left and right front buckets are separated from each other, and the tree to be transplanted from the gap is set between the toggle side arm link mechanisms, especially between the toggle parts. . Also, when digging the roots of a tree, when the front side arm link and the front bucket are swung and rotated backwards and inserted into the soil, the front buckets approach each other to perform root cutting and close the gap between adjacent tips.

Therefore, when digging up the roots of a tree, multiple front buckets and one rear bucket are rocked and rotated from the front and back to cut the roots and pinch them together, and in the end, the front and rear bucket tips end up in a butt shape. Close horizontally.

In addition, when carrying and transporting a pile of earth clods, concrete blocks, rocks, etc., first rotate the rear bucket cart forward and wait in a horizontal position, then rotate the front bucket cart forward and backward together with the front side arm link. By repeatedly rocking, the rear bucket was filled with clods of earth, concrete, rocks, etc., and the front bucket was also closed horizontally to stably sandwich and restrain the clods of soil, concrete, rocks, etc. stored from the front and back. Since it is lifted and transported, there is little risk of it spilling out of the front and rear buckets even if it is subjected to vibration or slight shaking, so the full capacity can be carried and transported at one time, resulting in high work efficiency and efficiency.

It goes without saying that the front and rear buckets can be operated simultaneously in the same manner as in the above-mentioned transplanting work. This is particularly effective when carrying and transporting while excavating.

[Example] An example of the present invention will be described with reference to FIGS. 1 to 4.

First, FIG. 1 shows a tree transplanting work device C attached to the rear end of a so-called bulldozer A, which is a self-propelled main engine of the present invention, via a lifting/lowering mechanism B.

Here, since both the elevating/lowering mechanism B and the tree transplanting work device C have a bilaterally symmetrical structure, only one side number is given and explained below.

That is, the lifting/lowering mechanism B connects the rear ends of the left and right support connecting links 2 to the left and right pivot pins 3 to the right and left bifurcated pin receivers 1 protruding from the lower left and right sides of the rear end of the bulldozer A.
The front end of the lower horizontal frame shaft 9 spans between the lower ends of the left and right rear legs 8a of the left and right downward concave side frames 8. The ends of the left and right piston rods 10 are pivotally connected to the respective upward projecting pieces 2a by pivot pins 11, and the tail ends 12a of the left and right lifting operation cylinders 12 are connected to the bulldozer A.
It is pivotally connected by left and right pivot pins 14 to left and right bifurcated pin holders 13 protruding from the middle positions on both left and right sides of the rear end, respectively, and to left and right bifurcated pin holders 15 respectively protruded from upper left and right sides of the rear end of bulldozer A. The tail end 16a of the left and right raising/lowering operation cylinders 16 is connected to the pivot pin 1, respectively.
7, and the tips of the piston rods 18 are pivotally connected to both ends of the upper horizontal frame shaft 19, which spans between the middle portions of the left and right rear legs 8a of the mounting back frame 7, to operate the operating cylinders 12 and 16. Then, the device C for tree transplantation, etc. is moved up and down and up and down.

As shown in FIGS. 2 to 4, the tree transplantation work device C has a symmetrical structure including a mounting back frame 7, and left and right front legs 8b of downwardly concave side frames 8 on the left and right sides of the mounting back frame 7. A pair of left and right toggle side arm link mechanisms 21 with the base ends of the left and right rear side arm links 20 fixed in a cantilever manner on the outside of the upper end and whose entire length upper sides are tilted outward, and the left and right front sides of the left and right toggle side arm link mechanisms 21. A pair of left and right front bucket belts 23 are respectively attached to the lower end of the arm link 22 so as to be able to rotate forward and backward and pivot backward, and the left and right front legs 8b of the downwardly concave side frame 7 on the left and right sides of the mounting back frame 7.
The back wall 2 is connected to the horizontal axis 24 that extends horizontally between the lower ends.
It consists of one rear bucket belt 25 with a connecting protrusion 25b projecting and extending over the entire surface of the bucket 5a, which is rotatably pivoted back and forth and forwardly pivoted.

In the figure, 26 is a cylindrical upper horizontal frame rod extending horizontally between the upper ends of the left and right front legs 8b of the downward concave side frame 7 on the left and right sides of the mounting back frame 7, and 27 is a cylindrical upper horizontal frame rod extending horizontally between the middle portions of the left and right front legs 8b. The suspended cylindrical middle horizontal frame rod, 28 is a reinforcing brace horizontally spanned between the upper horizontal frame axis 19 and the center of the middle horizontal frame rod 27, 29 is the left and right retaining plate, and 30 is the left and right side of the upper horizontal frame rod 26. Upper tail ends 32a inserted into left and right pin receivers 31 that project parallel to each other at right angles rearward toward both ends are pivotally connected by left and right pivot pins 33, and left and right operation pieces project on both left and right sides of the outer surface of the back wall 25a of the rear bucket 25. 34 is a pair of left and right rear bucket operation cylinders to which the protruding lower ends of each piston rod 35 are pivotally connected, and 36 is a tail end 36a inserted into left and right L-shaped pin receivers 37 connected in parallel to the base ends of the left and right rear side arm links 20. Left and right front side arm links 22 that overlap with each rear side arm link 20 that is pivotally connected by left and right pivot pins 38 and pivoted by each toggle shaft 39;
The tips of the piston rods 41 inserted into the upper ends of the left and right relay toggle pieces 40, which stand together at right angles with the ends of the toggle parts sandwiched therein, are pivotally connected by the respective pivot pins 42 to extend over the left and right rear side arm links 20. The left and right front side arm link operating cylinders 43 have apex angles fixed in parallel to the upper part of each back wall 23a of the left and right front bucket trunks 23, and the tips of each front side arm link 22 inserted between the rear corner ends are connected to respective pivot pins. The left and right inverted isosceles triangular connecting members 44 are pivotally connected, and the left and right connecting members 43 are connected by a pivot pin 46 that pivots the tail ends 45a inserted into the intermediate portions of the left and right relay toggle pieces 40. This is a front bucket operation cylinder that extends over the left and right front side arm links 22 by pivotally connecting the tips of piston rods 47 inserted between the front corner ends with pivot pins 48.

The adjacent side walls of the left and right front buckets 23 are cut out.

Next, the operation of the tree transplanting work device C of this embodiment during the transplanting work will be explained.

First, the pair of left and right front side arm link operation cylinders 36, left and right front bucket operation cylinders 45, and left and right rear bucket operation cylinders 30 are actuated, and the second
Left and right front side arm links 2 as shown in the imaginary lines in the figure
2, the left and right front buckets 23 are opened and swung forward, and the rear buckets 25 are opened and rotated backwards to create a large gap between the left and right front buckets 23, and from there the left and right toggle side arms move the tree. It is inserted between the left and right relay toggle pieces 40 of the link mechanism 21.

Next, the left and right front side arm link operation cylinders 36, the left and right front bucket trunk operation cylinders 45, and the left and right rear bucket trunk operation cylinders 30 are operated to move the left and right front side arm links 22 and the left and right front bucket trunks 23 rearward and rearward as shown in solid lines in FIG. The buckets 25 are each swung forward and rotated to insert the roots into a circumferential groove (not shown) that has been dug in advance by machine or hand in the ground around the roots, and while cutting the roots, the nails of the left and right front buckets 23 are finally inserted. 48 and the pawl 49 of the rear bucket 25 are rotated in a closing oscillating manner until they approach horizontal abutment.
At this time, the adjacent spaces 1 between the left and right front bucket bags 23 are narrowed, and they are also in a closed state as shown in FIGS. 3 and 4. In the final stage, left and right front buckets 23
The lower part of the root is forcibly supported from the front and back using the rear bucket 25.

Subsequently, the lifting operation cylinder 12 and the lifting operation cylinder 16 of the lifting/lowering mechanism B are operated to raise and raise the left and right toggle side arm link mechanism 21 integrally with the mounting back frame 7 to dig up the root of the tree. The roots supported by the left and right front buckets 23 and the rear buckets 25 are lifted to a predetermined height.

After that, the bulldozer A is driven to the transplanting site, brought to the excavated depression at the transplanting site, and is moved to the left and right lifting operation cylinders 12, the left and right raising and lowering operation cylinders 16, the left and right front side arm link operation cylinders 36, the left and right front bucket operation cylinders 45, and the left and right front bucket operation cylinders 45. The rear bucket operation cylinder 30 is operated to gently place the root in the cavity and complete the back-transplanting work.

The present invention uses a bulldozer A as a tree transplanting work device C.
Since the structure is smaller, lighter, and more compact than the previous model, even when the bulldozer A is driven to the transplanting site with the roots of the tree supported by the front and rear buckets 23 and 25, the weight is too far forward and the bulldozer A leans forward. Bulldozer A may cause the tree to fall over while driving due to the unevenness or slope of the ground, causing the tree to become unbalanced due to the unevenness or slope of the ground. The danger of overturning is completely eliminated, and transport can be carried out at a speed that is incomparable to conventional travel speeds, making work more efficient and efficient.

If the soil is clayey, it is effective to use scoop-type buckets without side walls as the front and rear buckets 23, 25.

The work of storing and transporting earth and concrete blocks is also carried out in the same way.

[Effects of the Invention] Thus, the present invention provides a compact and lightweight structure for the work equipment for tree transplantation, which provides stability to the bulldozer, increases transportation speed, and allows the bulldozer to easily fit into narrow spaces for transplantation work. This makes it possible to dig up and transplant trees planted on slopes or slopes, eliminate tree fall accidents and achieve safe work, eliminates dragging marks on the ground during transport, and eliminates soil clods and concrete clods. Even in storage and transportation work, the amount of storage in the front and rear buckets is several times that of conventional construction machines, and the storage speed and reliability are outstanding, and the machine exhibits excellent maneuverability.

[Brief explanation of drawings]

FIG. 1 is a side view of a self-propelled main engine equipped with a device for tree transplantation, etc., showing an embodiment of the present invention, and FIGS. 2 to 4 are enlarged right side views of the device for tree transplantation, etc.;
They are an enlarged plan view and an enlarged schematic front view. A...bulldozer, B...lifting/lowering mechanism, C...work device for tree transplantation, etc., 7...mounting back frame, 8
...Downward concave side frame, 8a...Rear leg, 8b
...Front leg part, 9...Lower frame shaft, 10, 18, 35, 4
1,47...Piston rod, 3,11,14,1
7, 33, 38, 42, 44, 46, 48... Pivot pin, 12... Lifting operation cylinder, 12a, 16
a, 32a, 36a, 45a... Tail end, 16... Lifting operation cylinder, 19... Upper horizontal frame axis, 20... Rear side arm link, 21... Toggle side arm link mechanism, 22... Front side arm link, 23... Front Bucket, 24... Lateral axis, 25... Back bucket, 3
0... Rear bucket operating cylinder, 36... Front side arm link operating cylinder, 40... Relay toggle piece, 43... Connection member, 45... Front bucket operating cylinder.

Claims (1)

[Scope of Claims] 1. In a work device such as tree transplantation, etc., in which a mounting back frame is pivotally attached to a self-propelled main engine such as a bulldozer via a lifting/lowering mechanism operated by fluid pressure, the right and left upper ends of the mounting back frame are A pair of left and right toggles in which the hydraulic pressure-operated rear ends of the left and right front side arm links are pivotally connected to the front ends of the left and right rear side arm links that extend forward with the upper side of the entire length opened and tilted outward. At the tip of the side arm link mechanism, a pair of left and right front buckets operated by fluid pressure are suspended and pivoted rearward via a connecting member so as to be able to rotate back and forth, while a fluid is applied to the entire widthwise length of the front lower end of the mounting back frame. A self-propelled main engine equipped with a device for tree transplantation, etc., in which a bucket is hung and pivoted facing the left and right front buckets so that it can freely swing back and forth after pressure operation. 2. The self-propelled main engine with a device for tree transplantation, etc. according to claim 1, wherein the left and right front buckets are formed by cutting out adjacent inner side walls that face each other.