KR102576268B1 - Agricultural rail moving wheels of agricultural implements - Google Patents

Abstract

The present invention relates to a moving wheel for agricultural rail-movable agricultural equipment used by workers in the process of growing or harvesting crops along a rail 50 installed in a house, etc., and includes a rail wheel unit 100 running along the rail 50. It is formed with ground wheels 200 that protrude outward at both ends of the rail wheel portion 100 and can travel along the ground,
The rail wheel unit 100 is made of hard synthetic resin, and the ground wheel 200 is made of soft synthetic resin or rubber.

Description

Agricultural rail moving wheels of agricultural implements { Agricultural rail moving wheels of agricultural implements }

The present invention relates to a moving wheel for agricultural rail-movable agricultural equipment used inside a house. More specifically, to a running rail installed in the valley between ridges formed on the ground within a house facility and the movement of agricultural equipment for a house that can simultaneously run in the open field. As a wheel,

While moving along the running rail, tasks such as spraying chemicals and/or harvesting and transporting the cultivated crops are performed, and even when leaving the running rail, the post-harvest transport work of the cultivated crops is not interrupted and is continuously transported to a destination outside the facility. This relates to the moving wheels of agricultural rail-moving farm equipment that enable work to be performed.

In general, a greenhouse (greenhouse) serves to create an environment suitable for the growth of crops by keeping the interior warm, and is widely used not only in the winter but also in the summer. Accordingly, because the commonly known greenhouses are easy to construct and have the advantage of providing sufficient thermal insulation, most farms use greenhouses to cultivate crops such as leaflets, roots, fruit vegetables, flowers, and fruit trees.

Meanwhile, with regard to transport devices, various types of transport means are generally used to transport crops or related materials in various production sites such as agriculture.

Among these, in the case of single-wheeled transport vehicles, it was difficult to load the cargo and balance left and right, and in the case of transport vehicles with multiple wheels, it was very difficult to drive between furrows in a rice field or to apply to narrow spaces such as greenhouses. .

In order to improve this problem, a device equipped with a longitudinal transportation means using the upper pipe of the greenhouse was proposed under Registration Patent No. 10-1460991 and Public Utility Publication No. 20-2017-0001574. In the case of , it was possible to move back and forth only in one furrow, and it was difficult to move on the ground of the greenhouse. Therefore, there was concern that the agricultural products being cultivated, such as fruit shoots, could be damaged during the process of transferring and loading them on the ground inside or outside the greenhouse using a town truck, which could lead to a decrease in yield or quality.

In addition, in Patent Publication No. 10-2018-0046146, as shown in Figure 1, drive wheels 10 and 20 that run along the ground are provided on the front and rear of the main body, and the front of the main body runs along a rail. A first rail wheel (30) and a rail wheel (40) are double attached to the rear of the main body so that they can run along the rail inside the driving wheel (20), but the rail wheels (30, 40) It can only be used on rails maintained at certain intervals, and the dually attached wheels interfere with each other, causing damage to the harvest during the movement process, resulting in a decrease in quality, which ultimately reduces economic efficiency.

Korean Patent Publication No. 10-2018-0046146 Korean Patent Publication No. 10-2321128 Korean Patent Publication No. 10-1460991

Therefore, the present invention was devised to solve the problems of the prior art as described above, and the moving wheels of agricultural equipment for house use according to the present invention can be operated on pipe rails installed with pipes of various diameters in the work space of a house-type facility. In addition, by having a structure that allows driving inside the house where the pipe rail ends and on general open fields outside the house, the aim is to maximize the increase in income of farmers and strengthen market competitiveness.

The present invention for achieving the above-described object is a moving wheel of a rail-movable agricultural implement used by workers in the process of growing or harvesting crops along a rail 50 installed in a house, etc., which runs along the rail 50. It is formed of a rail wheel portion 100 and a ground wheel 200 that protrudes outward at both ends of the rail wheel portion 100 and can travel along the ground,

The rail wheel part 100 is made of hard synthetic resin, and the ground wheel 200 is made of soft synthetic resin or rubber material.

To explain this in more detail, the rail wheel unit 100 is formed in a shape in which three circumferences are connected so as to be in line contact with the outer peripheral surface of the three pipes (D1, D2, D3; nominal names 25, 32, and 40), The height (C) of the rail wheel portion 100 is formed to be lower than the smallest diameter (D1) among the three pipes used as rails.

In addition, the ground wheel 200 is manufactured by foam injection molding with light weight and shock absorption, and the foam injection molding has a foaming rate of 5% to 20%.

In addition, bearings 300 and 350 are mounted on the seating portion 130 formed on the inner periphery 120 of the hub portion 110 of the wheel of the rail wheel portion 100, and both bearings 300 mounted on the seating portion , 350), a spacer 400 is provided to maintain the gap between the inner rings 310 and 330, and an auxiliary ring 500 is provided on the outer peripheral surface of the spacer 400 to facilitate assembly of the spacer.

In addition, the material of the rail wheel part 100 is TPE (Thermoplastic elastomer) or nylon or PA6 or PA66 or poly butylene terephthalate (PBT) or polypropylene (PP) or ABS ( Acrylonitrile Butadiene Styrene) or PC (Poly Carbonate),

The ground wheel 200 is made of thermoplastic polyester elastomer (TPEE), thermoplastic poly urethane (TPU), thermoplastic vulcanizates (TPV), or thermoplastic copolyester (TPC).

And the rail wheel part 100 material is 10 to 60 parts by weight of glass fiber (GF) and talc (TALC, Stone powder) 10 to 40 parts by weight or more is added.

In addition, the method of manufacturing the moving wheel of the agricultural rail moving agricultural equipment includes the step of providing a first molding device for injection molding the rail wheel portion 100 (S110), and the rail wheel portion (S110) through the first molding device. After injecting 100), the injection-molded rail wheel portion 100 is inserted into a second molding device to injection-mold the ground wheel 200. The rail wheel portion 100 insert frame injection molding step (S230) ) includes.

And the injection molding step (S120) of the rail wheel portion 100 includes supplying the material of the rail wheel portion 100 to the cylinder of the first molding device and melting it (S121), and the step of melting the material of the rail wheel portion 100. Injecting the material of the rail wheel portion 100 melted in the cylinder into the mold (S123), cooling and extracting the molded rail wheel portion 100 (S123), and forming the rail wheel portion into the mold of the two molding devices. A step of inserting (100) (S231), a step of supplying and melting the material of the ground wheel 200 to the cylinder of the second molding device (S232), and the foaming gas compressed into the cylinder A step of supplying (S233), a step of mixing the molten ground wheel 200 material and the foaming gas (S234), and the ground wheel 200 material mixed with the foaming gas is placed in the second molding device. A step of supplying into a mold and foam injection molding (S235), and a step of cooling and taking out the moving wheels of the agricultural rail mobile farm equipment foam injection molded so that the ground wheels 200 are welded to the rail wheel portion 100 (S236). Including,

In addition, the foaming gas supply step (S233) further includes depressurizing the foaming gas to a set supply pressure through a pressure reducing device, and the supply pressure V of the foaming gas is expressed in Equation 1 below: By satisfying

[Equation 1]

N(bar)=V(bar) + 5~50(bar), where N=ground wheel material pressure in the cylinder (bar)

In addition, the foam injection molding injection step (S235) is a step in which the pressure of the foaming gas mixed with the ground wheel material is lowered as it is supplied from the cylinder into the mold, and the foaming gas expands as the pressure decreases to form foaming pores. It is a method of manufacturing a moving wheel of a rail-moving agricultural implement for farming, comprising the step of forming a and the foaming gas is nitrogen.

The mobile wheel of the agricultural rail mobile agricultural equipment of the present invention can not only be driven on pipe rails installed with pipes of various diameters in the work space of a house-type facility, but can also be driven inside the house where the pipe rail ends and on general open ground outside the house. There is an advantage.

In addition, foam injection molding of the ground wheels has the advantage of reducing weight and increasing shock absorption.

In addition, a bearing is mounted on the seating portion formed on the inner periphery of the hub of the wheel of the rail wheel portion, and a spacer is provided to maintain the gap between the inner rings of both bearings mounted on the seating portion, and is inserted into the wheel axle of the agricultural equipment to maintain the bearing. Even if the inner ring part is assembled with a nut, the bearing can be protected from bending due to external force.

An auxiliary ring is provided on the outer peripheral surface of the spacer, which has the advantage of allowing the bearing and spacer to be easily assembled on the wheel axle of agricultural equipment.

Figure 1 is a perspective view of agricultural equipment in which the driving wheel and rail wheel of the prior art of the present invention are separately manufactured and assembled.
Figure 2 is a perspective view of agricultural equipment with the moving wheels of the agricultural rail-movable agricultural equipment according to the present invention assembled.
Figure 3 is a perspective view of the moving wheels of the agricultural rail-moving agricultural equipment according to the present invention.
Figure 4 is a cross-sectional view showing a cross-section of a moving wheel of a rail-movable farming implement.
Figure 5 is a flowchart showing the steps of injection molding the rail wheel portion of the present invention.
Figure 6 is a flowchart showing the steps of injecting ground wheels at both ends of the rail wheel portion of the present invention.
Figure 7 is a cross-sectional view of an injection machine for injecting the moving wheels of the agricultural rail-moving agricultural equipment of the present invention.
Figure 8 is a photo of the agricultural equipment with the moving wheels of the agricultural rail mobile agricultural equipment of the present invention assembled, being moved on the ground.

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

Attached drawings Figures 2 to 4 show the moving wheels of the rail-movable agricultural implement for farming according to the present invention, and Figures 5 to 7 are diagrams for explaining a method for injecting the moving wheels of the rail-movable agricultural implement for farming according to the present invention. admit.

The moving wheel of the agricultural rail movable agricultural equipment according to the present invention is a moving wheel provided on the agricultural rail movable agricultural equipment used by workers in the process of growing or harvesting mobile crops along the rail 50 installed in a house, etc., and the rail 50 It is formed of a rail wheel part 100 that runs along the rail wheel part 100, and a ground wheel 200 that protrudes outward at both ends of the rail wheel part 100 and can run along the ground, and the rail wheel part 100 It is made of hard synthetic resin, and the ground wheel 200 is made of soft synthetic resin or rubber material.

In other words, the moving wheel of the agricultural rail-moving agricultural implement of the present invention is referred to as the 'moving wheel of the agricultural rail-moving agricultural implement' used only in the process of cultivating or harvesting mobile crops along the rail 50 installed in the house, etc. limited.

In addition, the rail wheel portion 100 is formed in a shape in which three circumferences are connected so as to be in line contact with the outer peripheral surface of the three pipes (D1, D2, D3; nominal names 25, 32, and 40), and the rail wheel portion ( The height (C) of 100) is lower than the smallest diameter (D1) of the three pipes used as rails.

In this way, the rail 50 installed in a house, etc. usually uses a pipe plated on the outside to prevent rust, and the nominal dimensions of 25mm, 32mm, and 40mm are used depending on the size of the house or the weight of the quantity transported by rail. I do it.

Therefore, the rail wheel part 100 of the 'moving wheel of agricultural rail mobile agricultural equipment' of the present institution has an outer diameter of 34mm of a 25mm pipe on the inside, a 43mm outer diameter of a 32mm pipe in the middle layer, and a 40mm pipe in the outer layer so that it can be used on all three types of rails. It is formed in a shape where three circumferences are connected so as to be in line contact with the outer circumferential surface based on the outer diameter of 49mm, and the height (C) of the rail wheel part 100 is the smallest diameter (D1) of the three pipes used as rails. ) is formed lower than that.

Since the pipe is manufactured to comply with Korean Industrial Standards (KS D 3507), the height (C) of the rail wheel portion (100) is formed lower than the smallest diameter (25 mm pipe; D1) among the three pipes used as rails. When traveling along the rail 50, the outer peripheral surface of the ground wheel 200 is formed so that it does not contact the ground on which the rail 50 is installed.

When formed in this way, when A is formed at 1.4 to 1.6 mm and B is formed at 3.0 to 3.2 mm, all three pipes are in line contact with the outer peripheral surfaces and can move smoothly.

That is, the inside of the rail wheel portion 100 is formed into a circumference with a diameter of 34 mm so as to contact the outer peripheral surface of the pipe D1,

On the circumferential surface of the pipe (D1), A is connected to the circumferential surface of the pipe (D2) so as to have a gap of 1.4 to 1.6 mm, and B is spaced at a distance of 3.0 to 3.2 mm on the circumferential surface of the pipe (D2). The inner curved portion of the rail wheel portion 100 connected to the circumferential surface of the pipe D3 is formed to have a.

In order to easily move agricultural rail movable farm equipment, bearings 300 and 350 are mounted on the seating portion 130 formed on the inner periphery 120 of the hub portion 110 of the wheel of the rail wheel portion 100.

In addition, as the moving wheels are formed by injection of synthetic resin on the wheel axes of agricultural rail moving farm equipment, if they are excessively tightened with nuts, the gap between the inner rings (310, 330) of both bearings (300, 350) is narrowed, and accordingly, both bearings ( A bending load is applied to 300 and 350, which affects the life of the bearing, so that the gap between the inner rings 310 and 330 of the bearings 300 and 350 mounted on the seating portion 130 of the rail wheel portion 100 A spacer 400 made of steel is provided to maintain the.

The spacer 400 provided in this way is formed to be the same as the inner diameter and outer diameter of the inner rings 310 and 330 of both bearings 300 and 350, and the outer diameter of the spacer 400 is the inner circumference of the hub portion 110 of the wheel. 120), and an auxiliary ring 500 is provided on the outer peripheral surface of the spacer 400 in order to easily insert it into the shaft.

The auxiliary ring 500 is made of synthetic resin, etc. to facilitate assembly of the spacer, and has an inner diameter equal to the outer diameter of the spacer 400 and an outer diameter smaller than the inner diameter of the inner rings 310 and 330.

In addition, the ground wheel 200 is manufactured by foam injection molding with light weight and shock absorption, and the foam injection molding has a foaming rate of 5% to 20%.

If the expansion rate is less than 5%, it cannot have shock absorbing power, and if the expansion rate is more than 20%, the lifespan is shortened due to wear due to friction when rubbing against the ground, so the optimal expansion rate is 5% to 20%.

At this time, the method of manufacturing the moving wheels of the agricultural rail moving agricultural equipment may be performed by injection molding to improve the rigidity of the rail wheel part 100 running along the rail.

In addition, the ground wheel 200 is made of foam injection molding that can absorb impact force because it must run along uneven ground.

In order to inject the moving wheel of the agricultural rail movable agricultural implement, a step (S110) of providing a first molding device 90 for injection molding the rail wheel portion 100, and forming the rail wheel portion 100 through the first molding device ) in the injection molding step (S120) of the rail wheel portion 100,

Next, providing a second molding device 20 for foam injection molding the ground wheel 200 (S210), and foam injection molding the ground wheel 200 through the second molding device 20. The wheel 200 is formed including a foam injection molding step (S220).

Here, after primary forming the rail wheel part 100 as described above, the process of secondary forming the ground wheel 200 by inserting the primary formed rail wheel part 100 is the present invention. This is only an example of, and on the contrary, after primary molding of the ground wheel 200, a process of secondary molding of the rail wheel portion 100 by inserting the primary molded frame is also possible.

Meanwhile, the first molding device 90 includes a screw 92 rotatably arranged inside the cylinder 91, a hopper 93 mounted on one upper side of the cylinder 91, and a screw 92 installed on the cylinder 91. A heater is installed to supply heat within the cylinder 91, a mold 95 is connected to the nozzle 94 at the other end of the cylinder 91, and high-pressure foaming gas is supplied into the cylinder 91. A gas supply device 96 is provided.

The injection molding step (S120) of the rail wheel portion 100 includes supplying and melting the material of the rail wheel portion 100 to the cylinder of the first molding device (S121), and the cylinder of the first molding device. It consists of injecting the molten material of the rail wheel portion 100 into the mold (S122) and cooling and extracting the molded rail wheel portion 100 (S123).

In addition, the injection molding step (S220) of the ground wheel 200 includes the step of inserting the rail wheel portion 100 into the mold of the two molding devices (S231), and the material of the ground wheel 200. supplying and melting the cylinder of the second molding device (S232), supplying compressed foaming gas into the cylinder (S233), and mixing the melted ground wheel 200 material and the foaming gas. Step (S234), supplying the ground wheel 200 material mixed with the foaming gas into the mold of the second molding device to perform foam injection molding (S235),

It includes a step (S236) of cooling and taking out the moving wheels of the agricultural rail moving farm equipment that are foam injection molded so that the ground wheels 200 are welded to the rail wheel portion 100.

In addition, the foaming gas supply step (S234) further includes the step of depressurizing the foaming gas to a set supply pressure through a pressure reducing device.

At this time, the supply pressure V (bar) of the foaming gas is preferably set to satisfy [Equation 1] below.

[Equation 1]

N = V + (5 to 50)(bar) where N = ground wheel material pressure in the cylinder (bar)

In other words, as confirmed by Equation 1, the pressure applied to the ground wheel material in the cylinder must be greater than the supply pressure of the foaming gas, and as a result of the experiment, it was confirmed that the injection operation proceeds smoothly when the pressure is raised to about 5 to 50 bar. .

At this time, the pressure applied to the ground wheel material in the cylinder is the same as the pressure applied to the screw 92 rotatably arranged inside the cylinder 91 that applies pressure to the ground wheel.

In addition, the foam injection molding injection step (S220) is a step in which the pressure of the foaming gas mixed with the insulating material decreases as it is supplied from the cylinder 91 into the mold 95, and the pressure of the foaming gas decreases. It includes the step of expanding and forming foam pores.

That is, when the ground wheel material is input through the hopper 93, the ground wheel material is transported by the screw 92 and melted by the screw and heated by the heater, and is supplied to the cylinder 91 by the gas supply device 96. Foaming gas is introduced inside and mixed with the already melted insulating material.

And by the rotation of the screw 92, the mixed molten ground wheel material is filled into the mold 15 and has the shape of a ground wheel.

At this time, the foaming gas mixed with the molten ground wheel material in the cylinder 91 passes through the end of the injection machine nozzle 94 and is lowered from high pressure to atmospheric pressure when filling into the mold 95 begins.

Due to this pressure difference, the foaming gas present in the molten ground wheel material forms a pore layer and foaming progresses.

In addition, it is preferable that the foaming rate of the ground wheel is molded to be 5% to 20%, and the foaming gas is nitrogen.

If the foaming rate of the ground wheel is less than 5%, the foaming effect is minimal, and if it is more than 20%, the wear rate increases.

In addition, [Table 1] below is a table comparing the conventional ground wheel made of rubber and the foam injection molded ground wheel of the present invention.

(NR in the table below = Natural Rubber) Method Rubber molding (conventional) foam molding ingredient NR+SPCC NR only TPU TPC Specific gravity (g/㎠) 0.9 0.9 1.1 0.8 1.1 0.8 Foaming rate (%) 0 0 5 20 5 17 Weight (g) 392 336 209 176 202 174 Forming time (sec) 450 450 120 80 120 80

As shown in [Table 1], by foam injection molding the ground wheel, the ground wheel can be made lighter than before and productivity can be improved by reducing the molding time.

Meanwhile, the material of the rail wheel and the material of the ground wheel are made of thermoplastic resin.

The rigidity of the ground wheel material is softer than that of the rail wheel material and the melting point of the insulator material is lower than the melting point of the frame material, and the melting point difference between the rail wheel material and the ground wheel material is used to form the rail wheel. and the ground wheel form one piece.

In addition, the material of the rail wheel part 100 is TPE (Thermoplastic elastomer) or nylon or PA6 or PA66 or poly butylene terephthalate (PBT) or polypropylene (PP) or ABS ( Acrylonitrile Butadiene Styrene (PC) or Poly Carbonate (PC), and the ground wheel 200 is made of thermoplastic polyester elastomer (TPEE), thermoplastic poly urethane (TPU), or thermoplastic vulcanizates (TPV). ) or TPC (Thermoplastic copolyester), or a combination of two or more.

In addition, the material of the rail wheel part 100 is one or more of nylon or PA6 or PA66 or poly butylene terephthalate (PBT) or polypropylene (PP) or ABS or PC. It can be done in combination.

In addition, the material for the rail wheel part 100 is 10 to 60 parts by weight of glass fiber (GF) and 10 to 60 parts by weight of talc (TALC) based on 100 parts by weight of the base chip of one of the PBT and PA6 or PA66. Any one or more of 40 parts by weight may be added.

In Figure 8, the effect is proven by a photo of the agricultural implement with the moving wheels of the agricultural rail mobile agricultural implement of the present invention assembled, being moved on the ground.

Although the present invention has been described in detail through specific examples, this is for detailed explanation of the present invention, and the present invention is not limited thereto, and can be understood by those skilled in the art within the technical spirit of the present invention. It is clear that modifications and improvements are possible.

All simple modifications or changes of the present invention fall within the scope of the present invention, and the specific scope of protection of the present invention will be made clear by the appended claims.

50: Rail 100: Rail wheel part
110: hub of wheel 120: inner circumference
130: Seating part 200: Ground wheel
300: Bearing 310: Inner ring
320: Outer ring 400: Spacer
500: Auxiliary ring

Claims (4)

In the moving wheels of agricultural rail mobile farming equipment used by workers in the process of growing or harvesting mobile crops along the rail 50 installed in a house, etc.,
A rail wheel unit 100 running along the rail 50,
It is formed with ground wheels 200 that protrude outward at both ends of the rail wheel portion 100 and can travel along the ground,
The rail wheel part 100 is made of hard synthetic resin,
The ground wheel 200 is made of soft synthetic resin or rubber material,
Bearings 300, 350 are mounted on the seating portion 130 formed on the inner periphery 120 of the wheel hub portion 110 of the rail wheel portion 100, and both bearings 300, 350 are mounted on the seating portion. A moving wheel of a rail-moving agricultural implement for farming, characterized in that it is provided with a spacer (400) to maintain the gap between the inner rings (310, 330). According to paragraph 1,
The rail wheel unit 100 is formed in a shape in which three circumferences are connected so as to be in line contact with the outer peripheral surface of three pipes (nominal 25; D1, 32; D2, 40; D3),
The height (C) of the rail wheel portion 100 is formed lower than the smallest diameter (D1) of the three pipes used as rails,
The ground wheel 200 is manufactured by foam injection molding with light weight and shock absorption,
A moving wheel for agricultural rail moving agricultural equipment, characterized in that the foaming rate of foam injection molding is injected at a rate of 5% to 20%. According to paragraph 2,
A moving wheel for agricultural rail-movable agricultural equipment, characterized in that an auxiliary ring (500) is provided on the outer peripheral surface of the spacer (400) to facilitate assembly of the spacer. According to paragraph 3,
The material of the rail wheel part 100 is TPE (Thermoplastic elastomer) or nylon or PA6 or PA66 or poly butylene terephthalate (PBT) or polypropylene (PP) or Acrylonitrile Butadiene (ABS). Styrene) or PC (Poly Carbonate),
The ground wheel 200 is made of thermoplastic polyester elastomer (TPEE), thermoplastic poly urethane (TPU), thermoplastic vulcanizates (TPV), or thermoplastic copolyester (TPC),
In addition, the material for the rail wheel part 100 is 10 to 60 parts by weight of glass fiber (GF) and talc (TALC) for 100 parts by weight of the base chip of either PBT and PA6 (Polyamide) or PA66 (Polyamide). , stone powder) A moving wheel of a rail-movable agricultural implement for farming, characterized in that any one or more of 10 to 40 parts by weight is added.