JPH0451829Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field The present invention is capable of uniformly and finely excavating ground, etc., which is extremely hardened or has many irregularities on the surface, to a sufficient depth. Relating to a ground maintenance tool that can mix the soft soil on the surface with the hardened soil on the lower layer and level the entire ground with excellent homogeneity and flatness by using auxiliary maintenance tools such as pressure rollers, etc. It is something.

(B) Prior art Grounds for public facilities, such as school playgrounds, are created by roughly leveling the ground to the required area, then covering the surface with appropriate soil and flattening it with a pressure roller, etc. However, in outdoor grounds, the viscous substances in the soil are eroded due to repeated rainfall, and this gradually fills the voids in the soil below.
When dry, the ground becomes extremely hard due to the fixation effect of this, and the soil quality itself, including the degree of erosion due to rainfall, differs throughout the ground, and the frequency of stepping on the ground also varies depending on the position of the ground. Due to these differences, many uneven parts occur on the ground surface.

For this reason, at present, a so-called rake, a ground leveling tool with a perpendicular leveling plate attached to the tip of a handle of the required length, is used to scrape or disperse the earth and sand on the ground surface, thereby flattening the ground surface. However, with this method, the extremely hardened soil in the relatively lower layer of the ground and the softer soil on the surface tend to separate, and even in a ground that has been carefully flattened, walking and wind and rain associated with sports can cause the soil to become separated from each other. Not only does it easily scatter and move, reproducing uneven conditions, but it also becomes slippery due to the non-mixing of the soft soil on the surface and the hardened soil below, causing many problems such as frequent falls and slips during sports. This has resulted in a negative impact. To solve this problem, attempts have been made to form comb-shaped protrusions on the lower end of the leveling plate of a rake to dig out the hardened soil, but in order to embed the comb-like protrusions into the hardened soil, additional steps are required. The reality is that it is still not possible to adequately maintain the grounds.

(c) Problems to be solved by the invention This invention has been made in view of the above-mentioned circumstances, and the invention aims to reduce the soft soil on the surface of the ground and the hardened soil below the ground to a depth of less than the required depth. By raking finely and homogeneously and thoroughly mixing the soil textures, the ground can be leveled homogeneously, flatly, and stably over a long period of time by using auxiliary tools such as appropriate pressure rollers. The purpose is to provide a ground maintenance tool that can perform the following tasks.

(d) Technical means for solving the problem The technical means used by the present invention to achieve the above-mentioned technical problem is that a gripping rod is connected to one end and a support rod is connected to an appropriate intermediate position. A pair of frames held at a predetermined interval, a connecting part detachably connected to the other end of the frame, and an angle of 20 to 40 degrees with respect to the extension line of the frame when the connecting part is connected.
an adapter formed with a support part that is bent at an inclination angle of , and can support and fix the raking needle planting plate; A ground maintenance tool consisting of a raking needle planting plate which is flat so as to allow the ground to grow, and which has raking needles of appropriate thickness and length planted at predetermined intervals in a staggered manner on the side of the ground. Exists.

(e) Effects The present invention having such technical means has the following effects. In other words, a gripping rod is connected to one side end of a pair of frames, and a support rod is connected to an appropriate intermediate position, and the frames are held at a predetermined distance from each other, so that the structure is strong and the gripping rods can be pulled or pushed by an appropriate number of people. It can be moved by sliding on the ground. The connecting portion is removably connected to the other end of the frame, and is integrally connected to the connecting portion, and when connected, is bent at an inclination angle of 20 to 40 degrees with respect to the extension line of the frame. Since the adapter is connected with a support part that can support and fix the raking needle planting plate, when the grip part of the frame is operated by an appropriate number of people and it is slid on the ground, it is supported and fixed to the support part. The soil needle planting plate is maintained in substantially parallel contact with the ground surface. Moreover, on this raking needle planting plate, raking needles of appropriate thickness and length are planted at predetermined intervals in a staggered manner, and one side of the raking needle planting plate is loaded with a load. Since it is flattened so that it can be placed on top of the ground, by having several people on board depending on the degree of hardening of the ground, the raking needle can be pressed and buried sufficiently deep into the soil. Because they are planted in a staggered pattern,
Due to the sliding movement, the surface soil and the subsoil are scraped substantially homogeneously and finely, and the surface soil and the subsoil are sufficiently mixed with each other.

(F) Example The embodiment of the present invention will be described below in detail based on the drawings. Fig. 1 is a perspective view of the invention, Fig. 2 is an explanatory diagram of the installation state of the adapter, and Fig. 3 is a raking needle planting. A sketch of the installation board, Figure 4 is an explanatory diagram of the state of planting the same raking needles,
FIG. 5 is a usage diagram showing frames 1, 1'
A gripping rod 1A is provided at one end, and the frame 1,
A support rod 1B is connected to an appropriate intermediate position of 1',
A pair of frames 1, 1' are held at a predetermined interval. For the frames 1, 1', gripping rod 1A, support rod 1B, etc., it is convenient to use strong and multilayered materials, so iron pipe materials or iron bar materials are usually selected, and welding is generally used for connection. However, there are no particular restrictions even if an appropriate fitting means or connector is used.

At the other end of the thus formed pair of frames 1, 1', there is a connecting part 2A that can be detachably connected to the frames 1, 1', and the connecting part 2A is connected to the frames 1, 1'.
1', it is integral and bent so that the inclination angle α with respect to the extension line Adapter 2 in which a fixable support part 2B is formed
is installed. In this case, the means for attaching and detaching the frames 1, 1' and the connecting portion 2A of the adapter 2 is generally a screw connection using a screw 2C and a nut 2D. Also, when supporting and fixing the support part 2B of the adapter 2 and the rake needle planting plate 3, support fixing holes 2E are bored at appropriate positions in the support part 2B, and the rake needle planting plate 3 is A connecting fixing hole 3 is also drilled at the position, and this supporting fixing hole 2
E and the connecting fixing hole 3A may be connected with appropriate screws and nuts, or the supporting portion 2B may be welded to an appropriate position on the raking needle planting plate 3 in advance.

The raking needle planting plate 3 is flattened on one side so that suitable weight can be placed thereon, and on the other side, raking soil of an appropriate thickness and length is placed at a predetermined interval. The needles 3B are planted in a staggered manner. When the raking needle 3B slides on the ground surface, it is preferably made of an iron bar material and its diameter is also large enough to have enough toughness to withstand sliding resistance and to sufficiently dig into the surface soil and subsoil quality. 8~16mmφ, length 80~
Something around 160mm is desired. Furthermore, the raking needle 3B
In order to excavate the surface soil and subsoil as finely and homogeneously as possible, and to mix the excavated soil with each other, the soil is planted at intervals of about 50 to 100 mm in a staggered pattern, and in at least 3 to 5 rows. It is hoped that it will be planted.

When the present invention having such a configuration is actually used, an appropriate number of people enter the frames 1 and 1' as shown in FIG. Push or pull, and depending on the degree of hardening of the ground, have an appropriate number of people board the flattened side surface to load the raking needle planting plate 3, and push the raking needles 3B sufficiently deep into the ground soil. However, the aim is to achieve homogeneous and fine raking and mutual mixing of the raking soil quality. Of course, if it is necessary to flatten and harden the ground surface after digging according to the present invention, a maintenance aid such as a pressure roller is naturally used.

(g) Effects of the invention The present invention, which uses the above-mentioned technical means, exhibits the following unique effects.

When sliding the frame and gripping rod on the ground by pulling or pushing, install raking needles on the other end of the frame via an adapter that has an angle of inclination of 20 to 40 degrees with respect to the extension line of the frame. Since the plate is supported and fixed, the entire raking needle contacts the ground surface almost evenly, and the upper surface of the raking needle planting plate is flattened for load placement.
By placing an appropriate number of people on board according to the degree of hardening of the ground, the raking needle can be easily pushed into the ground. In addition, since the raking needles are planted at predetermined intervals and in a staggered pattern, the raking needles are raked finely and uniformly, and the surface soil that has been raked is thoroughly mixed with the subsoil. When used in combination with the ground leveling aid, the entire ground can be made homogeneous and flat, and stable ground leveling without crumbling can be achieved over a long period of time.

In addition, it is generally desired to perform preparatory physical training before playing sports, and ground preparation work using the present invention has a remarkable physical training effect, so it can be said that it is a ground maintenance tool with many unique features.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the present invention, Fig. 2 is an explanatory diagram of the adapter installation state, Fig. 3 is a sketch of the rake needle planting plate, Fig. 4 is an explanatory diagram of the rake needle planting state, and Fig. 5 The figure is a usage diagram. Explanation of symbols, 1, 1'...Frame, 1A...
Grip rod, 1B...Support rod, 2...Adapter, 2
A... Connection part, 2B... Support part, 2C... Screw,
2D... Nut, 2E... Support fixing hole, 3... Scraping needle planting plate, 3A... Connecting fixing hole, 3B... Scraping needle.

Claims (1)

[Scope of utility model registration request] A pair of frames in which a gripping rod is connected to one side end and a support rod is connected to an appropriate intermediate position and held at a predetermined distance from each other, a connecting part that is detachably connected to the other end of the frame, and the connecting part. an adapter formed by a bent support part which is integral with the part and which can support and fix the raking needle planting board at an angle of inclination of 20 to 40 degrees with respect to the extension line of the frame when connected; It is flat so that it can carry a load, and is composed of a raking needle planting plate in which raking needles of appropriate thickness and length are planted at predetermined intervals in a staggered manner on the side of the ground. Features ground maintenance tools.