JP3780261B2 - Strut puller - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a column pulling device used to pull out a column standing on a field.
[0002]
[Prior art]
When cultivating crops having “vines” such as cucumbers and peas, it is necessary to make the crops grow in a natural form by setting up pillars in the field and causing the vines to grow there.
[0003]
Since such a column requires a certain degree of durability against wind and rain, it is necessary to drive it to such a depth that it cannot be easily removed.
[0004]
When the cultivation of the crop is completed, the support is no longer necessary, and thus it is necessary to remove it from the field. Conventionally, it has been manually pulled out one by one.
[0005]
[Problems to be solved by the invention]
However, as described above, since the struts are driven to a depth that does not easily come off, much labor is required to pull them out manually. Moreover, since the support | pillar was installed with a certain amount of space | interval, it took much effort also to collect | recover the support | pillar after pulling out one by one.
[0006]
The present invention has been made in view of the circumstances as described above, and an object of the present invention is to easily pull out a column of a field and provide a device for transporting the column, thereby pulling out and collecting the column. The purpose is to reduce work effort.
[0007]
[Means for Solving the Problems]
The present invention relates to a column pulling device, and the above object of the present invention is a column pulling device for pulling out a column for a crop that is vertically inserted into the soil of a field, and the column pulling device Is a traveling means for traveling and moving in the field, a strut clamping means including a pair of strut clamping portions for sandwiching the struts, and pulling up the struts together with the strut clamping means while holding the struts. A column pulling device comprising: a column holding unit lifting and lowering unit that pulls out and lowers the column holding unit after pulling out the column to return it to its original position and opens the column holding unit. The The above-mentioned object of the present invention is a strut pulling device for pulling out a column for a crop that is vertically inserted into the soil of the field, and the strut pulling device travels on the field. With a traveling means for performing, a magic hand type or pantograph type link mechanism, a pair of column holding parts arranged at the tip of the link mechanism to hold the column, and holding the column in the column holding unit, And a link mechanism elevating means for pulling up the link mechanism together with the column holding part and pulling out the column, and lowering the link mechanism and releasing the column holding unit after pulling out the column. This is also achieved by a column pulling device.
[0008]
Furthermore, the above-mentioned object of the present invention is achieved more effectively by further providing a column mounting table for mounting and carrying the extracted column. By carrying out like this, since it can convey, pulling out a support | pillar, the effort which collect | recovers later can be saved.
[0009]
Furthermore, the object of the present invention is to provide a cylinder rod stop mechanism by using a hydraulic cylinder as the lifting means or so that the cylinder rod of the hydraulic cylinder stops at a predetermined position of an upper limit and a lower limit. Or by providing an adjustment mechanism for adjusting the upper limit stop position of the cylinder rod in accordance with the depth of the soil into which the column is inserted. Moreover, it can also be achieved by using a winch winding mechanism as the lifting means.
[0010]
Still further, the above object of the present invention can be achieved more effectively by further providing a guide for guiding the column between the column holding parts. Thereby, even if the column pulling device travels slightly deviated from the line in which the columns are arranged, it becomes easy to guide the column between the column holding parts.
[0011]
Furthermore, the above-described object of the present invention can be achieved more effectively by configuring the holding surface of the column holding part that holds the column with a cushion material. As a result, it is possible to firmly hold the support column, and to prevent the support column from being pulled out by sliding when the link mechanism is pulled up.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a column pulling apparatus according to the present invention will be described in detail with reference to the drawings.
[0013]
FIG. 1 is a perspective view showing an embodiment of a column pulling apparatus according to the present invention.
[0014]
In the figure, reference numeral 1 denotes a column that stands on the field. When the column pulling device according to the present invention travels through the field, the column 1 is guided between the pair of column holding parts 3 through the guide guide 2. Reference numeral 4 denotes a magic hand type link mechanism, which expands and contracts up and down to open and close the support column holding portion 3 to the left and right, and to hold and open the support column 1. A cushioning material such as rubber is affixed to the surface of the column holding part 3 for holding the column, and serves to firmly hold the column and prevent the column from being damaged. The basic movement of the link mechanism 4 will be described later (FIG. 2). Reference numeral 5 denotes an upper guide coupled to the upper node of the link mechanism, which moves without friction along the guide rail 6 and is pulled up and down on the guide rail 6 by the chain 7 (however, the lowering is performed by its own weight). . The chain 7 is meshed with the rotating gear 8, and the rotating gear 8 is fixed to the tip of the cylinder rod 10 of the hydraulic cylinder 9. When the cylinder rod 10 is extended by the hydraulic cylinder 9, the left side of the chain 7 in FIG. As it is fixed), the chain 7 is pulled up and the upper guide 5 is raised.
[0015]
Further, a lower guide 11 is provided at the lower node of the link mechanism 4 (which is hidden in FIG. 1 but is visible in FIGS. 2 to 5). Reference numeral 12 denotes a balancer for always holding the support pinching portion 3 almost vertically.
[0016]
Reference numeral 13 denotes an upper limit stop bar. After the support 1 held by the support holding part 3 is pulled out from the soil by the force of the hydraulic cylinder 9, it is not necessary to extend the cylinder rod 10 any further. When the valve is pulled out, the shift lever 15 of the hydraulic valve 14 is automatically returned to the neutral position, and the hydraulic cylinder 9 is stopped. The upper limit stop bar 13, the shift lever push-up bar 16, and the shift lever push-up projection 17 constitute an upper limit stop mechanism. Note that the height position of the upper limit stop bar 13 can be adjusted by the adjusting screw 27. This is because the upper limit stop position changes depending on the depth of the soil into which the support is inserted. That is, when the depth in which the support is buried is shallow, there is no need to lift up unnecessarily.
[0017]
Reference numeral 18 denotes a lower limit stop bar. After the column 1 is pulled out, the cylinder rod 10 is contracted, and the link mechanism 4 is returned to the initial state (the state shown in FIGS. 1 and 3) by the weight of the upper guide 5 and the lower guide 11. At this time, when the upper guide 5 is lowered to a predetermined position (designed lowermost end), the shift lever 15 of the hydraulic valve 14 is automatically returned to the neutral position, and the hydraulic cylinder 9 is stopped. The lower limit stop bar 18, the shift lever push-up bar 19 and the protrusion 20 constitute a lower limit stop mechanism.
[0018]
Reference numeral 21 denotes a traveling wheel for traveling in the field, and 22 is an auxiliary wheel. In the example of FIG. 1, there are two auxiliary wheels, but only one side may be used.
[0019]
Reference numeral 23 denotes a steering wheel for driving, and reference numeral 24 denotes a traveling clutch lever. Although the power source for traveling and hydraulic pump is not shown in FIG. 1, the column pulling device according to the present invention may be an independent traveling type equipped with a dedicated engine or connected to a tractor, tailor, etc. And it is good also as an attached type thing which receives supply of motive power from there.
[0020]
The traveling stop bar 25 automatically stops traveling even when the driver forgets to stop traveling by releasing the clutch lever 24 when the support column 1 is guided between the support column holding portions 3. When the strut 1 pushes the travel stop bar 25, it stops in the same manner as when the clutch lever 24 is released. When the travel stop bar 25 and the shift lever 15 are interlocked and the support column 1 pushes the travel stop bar 25, the shift lever 15 is shifted upward, the cylinder rod 10 is lifted, and the link mechanism 4 performs the clamping operation. It may be configured to start.
[0021]
Reference numeral 26 denotes a column mounting table for mounting and transporting the extracted column.
[0022]
Reference numerals 28 and 29 denote locking portions.
[0023]
Next, the basic movement of the magic hand type link mechanism 4 that holds and pulls out the support column 1 will be described with reference to FIG. The link mechanism 4 is a combination of two types of rods of different lengths, each two as shown in FIG. 2, and the knot point indicated by a circle can be freely rotated. .
[0024]
FIG. 2A shows the initial state before the clamping operation is started when the lower guide 11 and the upper guide 5 are at the lowest design end. From this state, when the upper guide 5 is pulled upward (not shown in FIG. 2 by the chain 7), the lower guide 11 stays in place under its own weight, and the pair of supporter holding parts 3 are supported from the left and right. 1 is started (FIG. 2B).
[0025]
From this state, the upper guide 5 is further pulled upward, and the lower guide 11 continues to stay in its place under its own weight until the interval between the column holding parts 3 becomes the same as the thickness of the column 1 (FIG. 2C).
[0026]
If the upper guide 5 is further pulled upward beyond this state, the support 1 is held in the support holding part 3, so that the link mechanism 4 is not deformed any more, and the lower guide 11 and the upper guide 5 are raised. The support | pillar clamping part 3 also moves upwards together (FIG.2 (D)). In this way, the support 1 is pulled out from the field. When the support column 1 is pulled out from the field, the pull-up of the upper guide 5 is stopped (the operation of the stop mechanism will be described later).
[0027]
FIG. 3 is a view for explaining the operation of the column pulling apparatus according to the present invention, and this figure corresponds to the state of FIG.
[0028]
That is, in the initial state ((A) in FIG. 2), when the shift lever 15 is switched from “neutral (N)” to “up (U)”, the cylinder rod 10 of the hydraulic cylinder 9 extends and the tip of the cylinder rod 10 is extended. The chain 7 connected to the upper guide 5 is pulled through the rotating gear 8 provided on the upper guide 5, and the upper guide 5 rises along the guide rail 6.
[0029]
The link mechanism 4 is deformed by raising the upper guide 5, and the column 1 is held by the column holding unit 3. At this stage, the support column 1 is still buried in the soil, but when the cylinder rod 10 is further extended, the support column 1 is pulled out from the soil.
[0030]
FIG. 4 corresponds to FIG. 2D and is a diagram for explaining the upper limit stop mechanism.
[0031]
That is, after the column 1 is completely pulled out from the soil, the cylinder rod 10 continues to rise, and when the tip of the cylinder rod 10 reaches a predetermined height, the tip of the cylinder rod 10 pushes up the upper limit stop bar 13. Then, the shift lever push-up bar 16 connected to the upper limit stop bar 13 is also lifted at the same time, and the shift lever push-up protrusion 17 at the tip pushes up the shift lever 15 of the hydraulic valve 14 so that the shift lever 15 is moved from “U” to “ Return to the “N” (neutral) position and stop the cylinder rod 10 from rising. Thereafter, when a part of the column 1 pulled out and clamped by the column holding unit 3 is grasped by hand and lifted upward slightly, the column holding unit 3 and the lower guide 11 (although the upper guide 5 remains under its own weight). Since the link mechanism 4 is deformed so as to open to the left and right, the column 1 is easily detached from the column holding part 3. The column 1 thus removed is mounted on the column mounting table 26.
[0032]
When one column has been pulled out in this way, in order to pull out the next column and return the column holding part 3 to the initial state ((A) in FIG. 2), in the state shown in FIG. Defeat towards “D” (down). Then, the cylinder rod 10 of the hydraulic cylinder 9 starts to shrink, and the upper guide 5 and the lower guide 11 begin to fall by their own weight while being suspended by the chain 7. When the tip of the cylinder rod 10 moves away from the upper limit stop bar 13, the shift lever push-up bar 16 returns to the original position by its own weight (the locking portion 28 stops at the original position, see FIG. 3).
[0033]
As described above, when the upper guide 5 and the lower guide 11 continue to fall under their own weight and the upper guide 5 and the lower guide 11 reach the lowest design point, the shift lever 15 is automatically moved by the action of the lower limit stop mechanism. Return from “D” to “N”.
[0034]
FIG. 5 is a diagram for explaining the mechanism of the above-described lower limit stop mechanism. Hereinafter, the mechanism of the lower limit stop mechanism will be described with reference to FIG.
[0035]
When the upper guide 5 and the lower guide 11 continue to fall by their own weight, the lower guide 11 first stops at the position of a stopper (not shown), and then the protrusion 20 attached to the upper guide 5 that continues to fall becomes like a seesaw. When the right side portion of the lower limit stop bar 18 is lowered to a position where it is pushed down, the bar on the left side of the lower limit stop bar 18 is lifted, and the shift lever push-up bar 19 is pushed up. Then, the shift lever push-up bar 19 pushes up the shift lever 15, the shift lever 15 is returned from “D” to “N”, the movement of the hydraulic cylinder 9 stops, and the upper guide 5 stops.
[0036]
This state is the state of FIG. 1. When the clutch lever 24 is gripped in FIG. 1, the column pulling device advances in the traveling direction, and when the next column is guided between the column holding parts 3, the clutch lever 24 is released. The travel of the column pulling device is stopped. Alternatively, even if the clutch lever 24 is not released, the travel stop bar 25 may be stopped when the strut 1 is pushed.
[0037]
A guide guide 2 is provided to correct the direction of travel when the column pulling device is slightly deviated from the direction in which the column is located. In FIG. 1, if the column 1 enters the range A, it becomes easy to guide the column 1 between the column holding parts 3 (because the auxiliary wheel 22 moves freely).
[0038]
In the present embodiment, a hydraulic cylinder is used to raise and lower the upper guide 5. However, the present invention is not limited to this, and an electric motor, a hydraulic motor, or the like may be used. Alternatively, although not shown, a winch hoisting mechanism that pulls the upper guide 5 directly with a wire can be used instead of pulling the chain with a hydraulic cylinder.
[0039]
Further, in the present embodiment, a magic hand type link mechanism is used as a support pinch means, but the present invention is not limited to this, and a pantograph type link mechanism as shown in FIG. Any mechanism that can convert the vertical movement into a horizontal opening / closing movement can be used. Since the operation of the pantograph type link mechanism is basically the same as that of the magic hand type, the description thereof is omitted.
[0040]
FIG. 7 is a view showing an embodiment of the column placing table 26 attached to the column pulling device according to the present invention. When the column 1 pulled out and placed in the field is transported and lowered to the storage place. The unloading mechanism is provided so that the columns can be unloaded all at once without manually lifting the support again. This will be described below with reference to the drawings.
[0041]
In FIG. 7, reference numeral 261 denotes a column placing unit on which the column 1 pulled out from the field is placed. Reference numeral 262 denotes an unloading prevention stopper for preventing the placed support from collapsing in the lateral direction. 263 is an “U” -shaped unloading lever having a handle 264 attached to the center. ing. The unloading lever 263 is rotatably connected to one end 267 of a connecting plate 266 that freely rotates around a fixed fulcrum 265, and the other end of the connecting plate 266 is joined to the load collapse prevention stopper 262. ing. Reference numeral 268 denotes a stopper. The above-described portions constitute the unloading mechanism for the column mounting table 26.
Hereinafter, the operation of the unloading mechanism of the column mounting table 26 will be described with reference to FIG. FIGS. 8A to 8C are views of the state in which the column is mounted on the column mounting table 26 as seen from the side. In FIG. 8 (A), in the state where the columns are stacked, pressure is applied to the load collapse prevention stopper 262 in the left direction of the figure due to the weight of the columns, so that the unloading lever 263 is pushed in the direction of the arrow. Since it hits the stopper 268 and stops, it is stationary. Next, when lowering the column, the handle 264 is lifted up slightly to remove it from the stopper 268 and pulled to the right as shown by the arrow to tilt the load collapse prevention stopper 262 as shown by the arrow. When the handle 264 is further pulled, the load collapse prevention stopper 262 falls to a position below the horizontal position (see FIG. 8C), and the column rolls down naturally. However, in the case where there is a column that does not roll down naturally and remains in the column mounting part 261, as shown in FIG. 8C, by lifting the unloading lever 263 upward with one end 267 as a fulcrum, the column mounting is performed. The column remaining on the placement unit 261 is dropped. In addition, when the column mounting table is returned to the original state after the column is unloaded, as shown in FIG. 9, the load collapse prevention stopper 262 is lifted by hand as indicated by an arrow (A), and the unloading lever 263 is moved by an arrow ( B) to return to the state of FIG. In addition, this is only one Example of the unloading mechanism of a support | pillar mounting base, and this invention is not limited to this.
[0042]
【The invention's effect】
As described above, according to the column pulling device according to the present invention, there is an effect that the labor of the column pulling work and the collecting work can be greatly reduced.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a column pulling apparatus according to the present invention.
FIG. 2 is a diagram for explaining a basic operation of pulling out a strut using a magic hand type link mechanism.
FIG. 3 is a view for explaining the operation of the column pulling apparatus according to the present invention.
FIG. 4 is a diagram for explaining a mechanism of an upper limit stop mechanism.
FIG. 5 is a diagram for explaining a mechanism of a lower limit stop mechanism.
FIG. 6 is a diagram illustrating an example of a pantograph-type link mechanism.
FIG. 7 is a perspective view showing an embodiment of a column mounting table provided with an unloading mechanism.
8 is a view for explaining the operation of the unloading mechanism of the column mounting table of FIG. 7;
FIG. 9 is a diagram for explaining the operation of returning the column mounting table to the initial state.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Support | pillar 2 Guidance guide 3 Support | pillar clamping part 4 Link mechanism 5 Upper guide 6 Guide rail 7 Chain 8 Rotating gear 9 Hydraulic cylinder 10 Cylinder rod 11 Lower guide 12 Balancer 13 Upper limit stop bar 14 Hydraulic valve 15 Shift lever 16, 19 Shift lever push-up Bar 17 Shift lever push-up protrusion 18 Lower limit stop bar 20 Protrusion part 21 Traveling wheel 22 Auxiliary wheel 23 Handle 24 Clutch lever 25 Traveling stop bar 26 Strut mounting base 27 Adjustment screw 28, 29 Locking part 261 Strut mounting part 262 Prevention of load collapse Stopper 263 Unloading lever 264 Handle 265 Fixed fulcrum 266 Connecting plate 268 Stopper

Claims (7)

A column pulling device for pulling out a column for a crop that is vertically inserted into the soil of a field, the column pulling device comprising:
Traveling means for traveling and moving in the field;
Magic hand type or pantograph type link mechanism,
A pair of strut clamping portions disposed at the distal end of the link mechanism and sandwiching the struts;
A link mechanism that pulls up the link mechanism together with the column holding part while pulling up the column mechanism while holding the column in the column holding unit, and lowers the link mechanism after the column is pulled out to open the column holding unit. Elevating means;
While providing a column mounting table for mounting and carrying the extracted column,
A column pulling apparatus, wherein a loading mechanism is provided on the column mounting table. 2. The column pulling apparatus according to claim 1, wherein a hydraulic cylinder is used as the lifting means. The column pulling device according to claim 2, wherein a cylinder rod stop mechanism is provided so that the cylinder rod of the hydraulic cylinder stops at predetermined positions of an upper limit and a lower limit. The strut pulling device according to claim 3, further comprising an adjusting mechanism for adjusting the upper limit stop position of the cylinder rod in accordance with the depth of soil into which the strut is inserted. The strut pulling device according to any one of claims 1 to 4, wherein a winch winding mechanism is used as the lifting means. A guide guide that is opened in a reverse C shape in the direction of travel of the column pulling device is disposed in front of the column holding unit, and the column is guided into the column holding unit. The strut pulling device according to any one of claims 1 to 5. The strut pulling device according to any one of claims 1 to 6, wherein a sandwiching surface of the strut clamping portion that sandwiches the strut is made of a cushion material.

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