Anchor for holding down agricultural and horticultural covering sheets and its operating tool

Abstract

To provide a holding anchor for an agricultural and horticultural covering sheet and an operating tool thereof, which can reduce the workload in fixing an anchor member of a sheathing material without requiring a worker to take an unreasonably stooped posture.SOLUTION: A holding anchor 1 for an agricultural and horticultural covering sheet S of the present invention is equipped with an operation compatible structure 12 on the top of a pin-shaped anchor main body 11. A holder 2 of the holding anchor 1 for the agricultural and horticultural covering sheet S of the present invention is equipped with a magnet piece M having a flat lower surface as a suction surface as a holding action body 22A for a holding portion 22. The magnetic force of the holding action body 22A attracts and holds the operation compatible structure 12 formed on the top of the holding anchor 1.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a method for operating a covering sheet, for example for covering crop ridges to ensure stable harvesting of crops, and in particular to a covering sheet retainer anchor and its operating tool that enable the worker to maintain a natural working posture when laying or removing the covering sheet. [Background technology]

[0002] 2. Description of the Related Art At agricultural crop growing sites, various agricultural and horticultural covering sheets are laid down for the purposes of preserving the field, preventing the proliferation of weeds, promoting crop growth, and controlling insects and disease. As part of measures to further reduce the burden on workers in this task, the applicants have separately proposed a "Rolling and unrolling device for agricultural and horticultural covering materials" (Patent Document 1) in Japanese Patent Application No. 2020-052736. The development of such work support devices has significantly reduced the labor and efficiency of covering sheet laying work, and reduced the workload.

[0003] While such improvements in the efficiency of laying work have been achieved, the fixing work of the covering sheet accompanying the laying work of the covering sheet has followed the conventional method, and the reduction in the work burden has not necessarily been achieved. In particular, as the efficiency of the spreading and laying work of the covering sheet has improved, the burden of the fixing work, which must be carried out quickly in response to it, is being recognized as being even more excessive.

[0004] Specifically, the covering sheet is fixed by, for example, using an anchor member made of a metal wire with suitable rigidity shaped like a hairpin, which is inserted through the covering sheet and into the field soil. Naturally, the anchor member is first temporarily inserted into the ground to fix the covering sheet, but this requires the worker to bend over, which inevitably places a heavy burden on the worker's body. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent application No. 2020-052736 Summary of the Invention [Problem to be solved by the invention]

[0006] The present invention has been made in consideration of the above-mentioned background, and has as its technical objective the development of a covering sheet retainer anchor and its operating tool that can fix the anchor member of the covering material without requiring an unnatural stooping posture, thereby reducing the workload. [Means for solving the problem]

[0007] The operating tool for the pressing anchor of the agricultural and horticultural covering sheet according to claim 1 has a grip part formed on the upper part of a rod body part of an appropriate length, Top of the covering sheet holding anchor at the bottom end A retaining means that can be attached to the operating conforming structure formed on the holding anchor and a withdrawal means that can be hooked to the operating conforming structure selectively act on the holding anchor. Along with, The holding means and the extracting means are both located on the axis of the rod element constituting the rod body part above the operating conforming structure formed on the top of the clamping anchor. The present invention is characterized in that it is arranged in a manner such that

[0008] The operating tool for the pressing anchor of the agricultural and horticultural covering sheet according to claim 2 has, in addition to the requirements of claim 1, The top of the clamp anchor can be attached retention The means is a holding part. This anchor is characterized in that it is provided with a magnetic piece having a flat adhesive surface on its underside as a holding body, and the magnetic force of this holding body is used to attract and hold the operating compatibility structure formed on the top of the holding anchor.

[0009] The operating tool for the pressing anchor of the agricultural and horticultural covering sheet according to claim 3 has, in addition to the requirements of claim 1 or 2, The extraction means capable of hooking the top of the clamp anchor is a hook for extraction. The present invention is characterized by the following points.

[0010] The operating tool for the pressing anchor of the agricultural and horticultural covering sheet according to claim 4 is In addition to the requirements of claims 1, 2 and 3, the rod body Regarding the above, an upper rod element provided above the grip portion, The holding means or the extracting meansThe rod is constructed of two parts, a lower rod element having a lower end and a lower rod element with a lower end at its lower end. The two parts are nested together, allowing the operating length of the rod body to be freely adjusted. Effect of the Invention

[0011] First, according to the invention described in claim 1, A grip portion is formed at the top of the rod body of an appropriate length, and a holding means is provided at the bottom end to which the top of the pressure anchor of the covering sheet can be connected, so that the pressure anchor can be pushed into the field surface while holding the pressure anchor on the lower end side without having to assume an unnatural posture such as bending the waist. In addition, when pulling out the anchor, the pulling means of the rod body can be used to hook the top of the pressure anchor and pull it out upwards. This allows the operator to perform this operation without having to bend over in an unnatural position, just like when pushing the pressure anchor in.

[0012] According to the invention described in claim 2, Regarding the holding means, Holding part Let's say The magnet piece has a flat attracting surface on the underside, so the anchor can be securely attached without the need for complicated operations. Hold It is possible.

[0013] Also, claims 3 According to the described invention, the lower rod element is provided with a pull-out hook at its lower end. As a means of extraction Therefore, the lower rod element Select This allows the operating tool to be used when pulling the clamp anchor out of the soil.

[0014] Also, claims 4 According to the described invention, the rod main body is composed of two parts: an upper rod element located above the grip portion and a lower rod element with a holding portion at its lower end.The two are nested together to make the working length of the rod main body freely adjustable, so that it can be adjusted to an appropriate length to suit the user's body shape. [Brief description of the drawings]

[0015] [Figure 1] FIG. 2 is an explanatory diagram showing a state in which an operating tool for a pressing anchor of the agricultural and horticultural covering sheet of the present invention is used. [Diagram 2] FIG. 2 is an explanatory diagram showing the pushing and pulling operations of the pressing anchor of the agricultural and horticultural covering sheet of the present invention using an operating tool. [Diagram 3]FIG. 10 is an explanatory diagram showing the relationship between the operating tool for the pressing anchor of the agricultural and horticultural covering sheet of the present invention and the rolling-up and unrolling device in an operational mode when the pressing anchor is pressed into the sheet using the operating tool. [Figure 4] 13 is a perspective view showing another illustrative embodiment of a pressure anchor used in the operating tool of the present invention. FIG. [Diagram 5] 10A and 10B are explanatory diagrams showing the relationship between an operating tool according to another embodiment of the present invention and a pressure anchor used with the operating tool, in which (a) is an oblique view showing the connection relationship during a pushing-in operation, and (b) is a longitudinal side view showing the locking relationship during a pulling-out operation. [Figure 6] 13A and 13B are perspective views showing a state in which a pushing operation is performed and a state in which a pulling operation is performed in an operating tool according to another embodiment. [Figure 7] 13A and 13B are perspective views showing a state in which a pushing operation is performed and a state in which a pulling operation is performed in an operating tool according to another embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] The best mode for carrying out the present invention is one of the embodiments described below, and also includes various improved embodiments based on this technical concept. EXAMPLES

[0017] The present invention will be specifically described below based on the illustrated embodiment. First, before describing the holding anchor 1 for the covering sheet S and its operating tool 2, the covering material winding and spreading device 3 shown in Figure 1 and the manner in which the covering sheet S is laid and fixed by it will be generally described.

[0018] First, an overview of the winding and unfolding device 3 will be given. This device comprises a frame member 31 that is capable of running across ridges, a winding shaft 32 that is supported by this frame member 31 and winds up the covering sheet S, an intermediate guide body 33 that is provided in front of the winding shaft 32, and a receiving guide body 34 that is provided in front of the intermediate guide body 33. The winding and unfolding device pays out the covering sheet S that is wound around the winding shaft 32 so as to unfold it to the rear of the device.

[0019] The covering sheet S unfolded by this device is, for example, a nonwoven fabric sheet with a width of 2 m or less and a length of about 100 m, and is designed to cover, for example, about three rows of ridges of a crop F with one covering sheet S. Each time the covering sheet S is unfolded, a worker P fixes both side edges of the covering sheet S with a pressure anchor 1. The specific configuration of the pressure anchor 1 and its operating tool 2 will be described below.

[0020] First, as an example of a preferred form of the pressure anchor 1, as shown in Figures 1 to 3, the pressure anchor 1 has an anchor body 11 made of two parallel element pins 10 formed into a hairpin shape by bending back the upper part of a thin round metal bar, for example. An operating conforming structure 12 is provided above the anchor body 11.

[0021] The operation adapting structure 12 is a structure for smooth connection and combination with the operating tool 2 described below, and specifically, is a disk-shaped adapting piece 12A made of a magnetic metal welded and fixed to the top of the anchor body 11. This adapting piece 12A has a pull-out operation hole 13 that is partially hollowed out, excluding the portion welded to the anchor body 11. Furthermore, the underside of the operation adapting structure 12 near the top of the anchor body 11 is provided with a pressing flange 14 made of resin, rubber, or the like with appropriate hardness, or so-called stiffness.

[0022] Next, the operating tool 2 for performing operations such as driving the clamp anchor 1 will be described. This rod has a rod body 20 of suitable length, on the upper part of which a grip portion 21 is formed, and the lower end of which can be connected to the top of the clamp anchor 1 of the covering sheet S. Holding means The rod body 20 has a holding portion 22. First, the rod body 20 is formed of a metal pipe, for example, and in this embodiment, the rod body 20 is formed of two members, an upper rod element 20A and a lower rod element 20B.

[0023] The lower rod element 20B fits inside the upper rod element 20A in a nested manner, and the two are fixed together by a lock bolt 20C provided below the upper rod element 20A, resulting in a freely adjustable working length L of the rod main body 20. The grip portion 21 above the rod main body 20 may have any shape that allows the rod main body 20 to be pushed downward as appropriate, and in this embodiment, the grip portion 21 is configured via a fork portion 21A so as to be perpendicular to the rod main body 20 upward.

[0024] On the other hand, regarding the holding part 22 provided at the lower end of the rod main body 20, this holding part 22 has a magnet piece M as a holding body 22A. This magnet piece M is attached in a state where it is surrounded from above and around by a magnet holder 22B with the lower side left open. Note that the magnet holder 22B is preferably made of a non-magnetic material such as resin, and its purpose is to limit the holding surface to the lower surface when holding the clamp anchor 1, as described later.

[0025] In actual agricultural work, the covering sheet S is also wound up after a required period of time has elapsed. In this case, the lower rod element 20B is replaced by With extraction means A pull-out adapter 23 is used. That is, the pull-out adapter 23 is a pipe-shaped member having the same diameter as the lower rod element 20B, and a pull-out hook 23A is formed at the lower end of the pipe-shaped member. The pull-out hook 23A is hooked onto the top of the holding anchor 1 that holds down the covering sheet S, and pulled up. Details of this operation will be described later.

[0026] The operation of the above-mentioned clamp anchor 1 and operating tool 2 will now be described while explaining how to use them. First, as an example of an actual mode of operation, as shown in Fig. 1, a work using a winding and spreading device 3 capable of spreading the covering sheet S over the ridges of a crop F at an effective rate is performed together with a work of fixing the covering sheet S. That is, as shown in Figs. 1 and 3, the covering sheet S unwound from the winding and spreading device 3 comes to cover the field soil on the ridge surface behind the winding and spreading device 3, and at that timing, a worker P uses a pressure anchor 1 to fix the side edge of the covering sheet S at appropriate intervals in the length direction.

[0027] Specifically, the pressure anchor 1 stored in the stocker 35 attached to the winding and spreading device 3 is taken out, and the pressure anchor 1 is pushed into the ground through the covering sheet S by the operating tool 2. That is, the operation adapting structure 12 of the pressure anchor 1 is a disk-shaped adapting piece 12A made of a magnetic material, and when this part is brought close so that the magnet piece M provided at the lower end of the operating tool 2 can be attracted to it, the pressure anchor 1 is attached to the lower end of the operating tool 2 as shown in Figures 1 to 3. In this state, when the worker P holds the operating tool 2 in a natural standing position, the lower end of the anchor main body 11 of the pressure anchor 1 is located directly above the covering sheet S, and if the top of the pressure anchor 1 is pushed in with the operating tool 2 in this state, the anchor main body 11 of the pressure anchor 1 will penetrate the covering sheet S and be inserted into the ground.

[0028] Since this operation is performed in a form in which the operating tool 2 is attached above the anchor, the pushing operation can be performed simply by pushing the operating tool 2 downward, and the worker P can work in a natural posture without having to bend over. In this way, the pushing is completed when the pressing flange 14 provided on the pressing anchor 1 reaches the field soil surface. After that, the operating tool 2 is lifted up, leaving the pressing anchor 1 behind, but since the two are simply attracted to each other by magnetic force, if the operating tool 2 is tilted slightly, the magnetic attraction weakens, and in that state the operating tool 2 can be lifted up, leaving the pressing anchor 1 in the pushed-in position, i.e., in the field.

[0029] On the other hand, when pulling out the clamp anchor 1 that has already been pushed in, the pull-out adapter 23 is used, which is replaced with the lower rod element 20B, and the hook 23F at its tip, i.e., the lower end, is inserted through the pull-out operation hole 13 of the fitting piece 12A, and the hook 23F is hooked onto the top of the anchor body 11, and it is pulled out upward. As with pushing in the clamp anchor 1, this operation can also be performed by the worker P without assuming an unnatural posture such as bending over.

[0030] The present invention is considered to have one typical preferred embodiment described above, but other embodiments may also be considered within the technical concept of the present invention. 〈i . Used in the operating tool of the present invention Anchor Informative Other Examples In Figure 4(a), For reference The type shown is one in which the anchor body 11 is formed from a single piece of thin round metal bar, with the top part bent back into a U-shape and an adaptable piece 12A welded and fixed to the upper surface, giving it a so-called peg-like shape. Furthermore, in Fig. 4(b) For reference What is shown is an operation-compatible structure 12 made only of thin round metal rod material. That is, two element pins 10 constituting the anchor body 11 are provided in parallel, and the material is bent at the top to form the annular portion and the center portion continuously from the same material to form the operation-compatible structure 12. Note that, in order to form these operation-compatible structures 12, welding may be completely eliminated for the portion where the material is formed into a flat plate shape, or adjacent portions of the wire material may be welded. In addition, as shown in FIG. Informative In this embodiment, the top shape of the anchor main body 11 is formed by bending the material to have a convex shape when viewed from the side, and this can be applied to another embodiment of the operating tool 2 described later, which is a combined push-in and pull-out type.

[0031] <ii. Other embodiments of the operating tool> Next, another embodiment of the operating tool 2 will be described. 5 is a so-called multi-purpose type capable of both pushing in and pulling out the clamp anchor 1. For example, the lower part of the lower rod element 20B of the rod main body 20 in the operating tool 2 is processed into a flat shape to form a receiving portion 25 that becomes part of the holding portion 22.

[0032] The storage portion 25 is provided with a retention latch 26 that prevents the retaining anchor 1 stored therein from coming loose and also acts when the retaining anchor 1 is pulled out. The retention latch 26 is rotatably attached to the lower end of the lower rod element 20B and is generally U-shaped in side view. It is attached to the lower rod element 20B with the tip of an upper fork portion 26A as a pivot point 26P, and a latch action end 26C is formed at the lower end of an arm portion 26B that extends downward from the fork portion 26A. This latch action end 26C is provided in the storage portion 25 so as to be inserted into the storage portion 25 from the outside in a barbed manner.

[0033] The retention latch 26 as a whole is shifted to open or close by the Bowden cable 27, and the lower end of the inner cable of the Bowden cable 27 is connected to the upper end of the arm portion 26B. Furthermore, a set spring 26S is interposed between the Bowden cable 27 and the outer stopper 27A, so that the retention latch 26 as a whole always maintains a state in which the latch action end 26C is inserted into the storage portion 25. The lower surface of the latch action end 26C is an inclined surface to facilitate reception of the pressure anchor 1, while the upper surface is a substantially horizontal surface to prevent the pressure anchor 1 from slipping out. In order to operate the retention latch 26, an operating lever 28 is disposed in the vicinity of the grip portion 21.

[0034] The manner of use of this common-use push-out type operating tool 2 will be described below. The anchor applicable to this operating tool 2 is the type shown in FIG. 4(C), which does not have an operating adapting structure 12 including an adapting piece 12A that unfolds on a flat plate. Therefore, the conventional type of commercially available press anchor (for example, The product name "Kuromaru-kun (registered trademark)" applies as is. First, to hold the pressure anchor 1 with the operating tool 2, it is sufficient to simply fit the top of the anchor into the storage section 25. That is, when the top of the pressure anchor 1, which has been partially inserted into the storage section 25 by this operation, comes into contact with the inclined surface on the underside of the latch action end 26C, it pushes the latch action end 26C away against the elastic force of the set spring 26S, and enters the inside of the storage section 25. The latch action end 26C then returns to its inserted state by the action of the set spring 26S.

[0035] In this state, the pressure anchor 1, which is held in a suspended state at the lower end of the operating tool 2, is pushed in so as to penetrate the covering sheet S and pierce the field ground. Of course, even at this time, the worker P can perform the work without taking an awkward posture such as bending over. To pull up the operating tool 2 leaving behind the pressure anchor 1 holding the covering sheet S, the operator grasps the operating lever 28 at the hand of the grip portion 21, and rotates the whole by pulling up the free end of the upper end of the holding latch 26 upward, and the latch action end 26C is removed from the storage portion 25. This releases the engagement between the operating tool 2 and the pressure anchor 1, and the operating tool 2 can be pulled up while leaving behind the pressure anchor 1 stuck in the field ground.

[0036] On the other hand, to pull out the holding anchor 1 using this common type operating tool 2, the lower end of the operating tool 2 is pressed against the top of the holding anchor 1 near the field ground. This causes the top of the holding anchor 1 to push aside the latch action end 26C and enter the back of the storage section 25, i.e., the upper part. In this state, if the operating tool 2 is pulled up, the latch action end 26C keeps the top of the retainer anchor 1 hooked, allowing it to be pulled out. The pulled-out pressure anchor 1 can be separated from the operating tool 2 by gripping the operating lever 28 and retracting the latch action end 26C from the storage portion 25.

[0037] <Another embodiment of the common type operating tool> Furthermore, the technical concept of the above-mentioned common type operating tool 2 can be applied to the operating tool 2 shown in Figures 1 to 3 as a basic embodiment. That is, the one shown in Figure 6 has a hook body 24 for extraction rotatably attached to the lower rod element 20B. Specifically, the extraction hook body 24 has a shape that can be expressed as an arch when viewed from the side, and has a locking hook 24A formed on the free end, and when this is positioned downward during operation, the locking hook 24A is located below the holding portion 22. In other words, the locking hook 24A is provided on the underside of the holding portion 22, and it performs the extraction of the clamp anchor 1 as already described. On the other hand, when the locking hook 24A is not in use, this portion is pulled upward and stored in the retracted position. The two positions of the operating and non-operating states are fixedly set by tightening the thumbscrew 23C around the rotating shaft 24B. At the same time, as shown in FIG. 7, an operating portion 29A provided on a rod-shaped hook body 29 may be operated to cause a holding body 22A consisting of a disk-shaped magnet piece M to appear and disappear from the center.

[0038] 〈iii. A useful reference Other Examples Furthermore, in Fig. 3(B) For reference The embodiment shown utilizes the body of the aforementioned winding and unfolding device 3, and has a subframe 36 with wheels attached to the rear of the body, on which the operating tool 2 is attached so as to be movable up and down. To make it movable, a sheath-shaped support member 37 is provided on the subframe 36, or a support member on a parallel link is attached. In this case, the worker P does not need to hold the operating tool 2 itself, but only needs to push it up and down. Of course, the winding and spreading device 3 will temporarily stop when the pressure anchor 1 is operated, but if the subframe 36 itself is freely extendable and retractable in the traveling direction relative to the main body of the winding and spreading device 3, the main body of the winding and spreading device 3 can travel while the pressure anchor 1 remains temporarily in a fixed position and can be operated. [Explanation of symbols]

[0039] F crops L working length P worker M Magnet piece S Covering sheet 1 Presser anchor 2 Operating tools 3 Winding and unfolding device 10 Element Pin 11 Anchor body 12 Suitable structure for operation 12A compatible piece 13. Removal hole 14 Flange 20 Rod body 20A Upper Rod Element 20B Lower Rod Element 20C Rock Bolt 21 Grip section 21A Fork section 22 Holding part 22A Retention body 22B Magnet holder 23 Extraction adapter 23A Extraction hook 23C Thumb screw 23F Hook 24 Removal hook body 24A Locking Hook 24B Rotating shaft 25 Storage section 26 Retaining Latch 26A Fork section 26B Arm section 26C Latch action end 26P rotation fulcrum 26S set spring 27 Bowden Cable 27A Outer stopper 28 Operating lever 29 Hook body 29A Operation section 31 Frame members 32 Winding shaft 33 Intermediate guide body 34 Guide body 35 Stocker 36 Subframe 37 (Sheath-like) Supporting Member

Claims

1. A grip portion is formed on the upper portion of a rod body of an appropriate length, An operating tool for a pressure anchor for an agricultural and horticultural covering sheet, characterized in that an attachable holding means and a hookable extraction means are selectively acted on the pressure anchor with respect to an operating adaptation structure formed at the top of the pressure anchor for the covering sheet at its lower end, and both the holding means and the extraction means are arranged on the axis of the rod element that constitutes the rod main body, above the operating adaptation structure formed at the top of the pressure anchor.

2. The holding means to which the top of the pressure anchor can be attached comprises a magnetic piece having a flat suction surface on its underside as a holding body, and the magnetic force of the holding body is used to attract and hold the operation compatible structure formed on the top of the pressure anchor.

3. 2. The operating tool for a pressure anchor for an agricultural and horticultural covering sheet according to claim 1, wherein the extracting means capable of hooking the top of the pressure anchor is an extracting hook.

4. An operating tool for a clamping anchor for agricultural and horticultural covering sheets as described in claims 1, 2 or 3, characterized in that the rod main body is composed of two parts: an upper rod element provided above the grip portion and a lower rod element provided at its lower end with the holding means or the extraction means, and the two are nested together to make the operating length of the rod main body freely adjustable.

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