WO2023022688A1

WO2023022688A1 - Novelty in spring mechanism used in spring type tillage and blasting legs

Info

Publication number: WO2023022688A1
Application number: PCT/TR2022/050831
Authority: WO
Inventors: Mevlüt DUMAN
Original assignee: Özdöken Tarim Maki̇nalari Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇
Priority date: 2021-08-19
Filing date: 2022-08-09
Publication date: 2023-02-23

Abstract

Spring mechanism (110) that rises the blasting systems (legs) used in tillage in the upward direction (y) when it collides with factors such as stones etc. in the soil without the inversion of the soil in the machines (chisel plows, subsoilers, hoe cultivator machines, strip-like soil tillage machines, crowbar, cultivator machines etc.) where the tillage and blasting system utilized in the agricultural sector, that is strengthened against breakage with increased structural durability by the snap mounting of the shaft (111) in the leg to the shaft bearing (112), that provides the spring movement, which eliminates the weakening of the structural strength of the shaft (111) due to unscrewing or welding as in the state of the art, and thus prevents the leg (100) from flexing and rising up and damaging the machine.

Description

Novelty in Spring Mechanism Used in Spring Type Tillage and Blasting Legs

TECHNICAL FIELD

The present invention relates to a spring mechanism that provides the spring movement of the legs in the blasting systems used in tillage without the inversion of the soil in the machines such as chisel blasters, subsoilers, cultivators, etc., in which spring type tillage and blasting system are used in the agriculture sector.

STATE OF THE ART

The machines (chisel plows, subsoilers, hoe cultivator machines, strip-like soil tillage machines, crowbar, cultivator machines) in which the spring-type tillage and blasting systems are used for various purposes such as raising the soil, aeration, loosening, breaking up the clods, cutting the weeds and removing their roots to the soil surface, breaking the cream layer, removing the top and bottom soil compaction, opening the natural drainage channels, preparing the seed bed, stubble ploughing, creating ridges and furrows in tillage for ridge cultivation; mixing fertilizer, compost, seeds, etc., which are thrown on the field surface, into the soil, hoeing between rows in hoe plants.

The machines (chisel plows, subsoilers, hoe cultivator machines, strip-like soil tillage machines, crowbar, cultivator machines, etc.) in which the spring type tillage and blasting system are used, are preferably utilized in dense rooted and stony land, but also in all soil conditions. The most important part of these machines is the leg structure that blasts the soil. The leg structure working on soil is made of flat steel, plate, rounded, profile, casting, etc. materials.

Each blasting leg works independently in the machines where the spring type soil blasting system is used. The working principle of the legs is that the overload caused by factors such as stones, etc. coming to the legs working in the field, prevents the leg from being lifted up as in Figure-4 and the machine from being damaged by the effect of the load transferred by the shaft to the spring/springs seated on the shaft via the shaft. When the factors (sudden load) on the leg are removed, the load on the spring/springs decreases, and the leg continues to till the soil by taking its previous form. In the spring type soil blasting system, the shaft, which acts as the bearing of the springs, helps to adjust the tension and the amount of pressure of the spring / springs. The amount of pressure of the spring / springs can be increased or decreased through the shaft. Sudden load damping on the leg during tillage is provided by the spring/springs mounted on the shaft.

In the state of the art, when tilling the soil, the leg will rise with the sudden load, while the spring / springs will be closed and will cause the shaft to twist upwards in case the load on the leg is too high. This movement causes the shaft to break more quickly.

The raised leg will work to return to its original state when the factor disappears, creating a sudden and impact load. As a result of this sudden load change, the load on the shaft will increase, creating an effect similar to a hammer blow and causing the shaft to break.

The technique of shaft joining in the spring mechanism of the spring type soil blasting machines used in the state of the art is performed in two manner: splined joint (Figure-6) and welded joint (Figure-7).

• In systems that are joint with a splined shaft, breakage occurs due to the notch effect of the tooth at the end of the spline drilled on the shaft (Figure 5 - C detail). Due to the sudden sectional change here, the reduced size of the shaft diameter and the accumulation in the stress area cause the notch effect in the material. Stress concentrations on the shaft occur in knocks caused by the sudden load. These stresses cause crack formation and propagation and eventually breakage occurs. (Figure 5)

• In welded joint systems, melting occurs on the joining surface of the parts while the welding connection is performed. Due to the heat, the material properties change and a hard structure occurs in these regions. The difference in crystal structure in the transition region from the weld seam to the material adversely affects the strength, and this region, which is usually called the heat-affected region, is the most critical region of the welded joint and breakage occur most often in this region. The breakages in the welded shaft are caused by the material properties changing due to the heat in the welded construction region and by the fatigue caused by the geometry of the weld seams. The fatigue stresses that occur on the shaft in knocks caused by the sudden load increase, and the weld seam is broken due to the hard material structure formed due to welding. (Figure 7)

In the way of mounting both spring bearing shafts, the broken shaft needs to be repaired. All these above-mentioned problems cause the machine not to work, and in this case, it causes time and cost loss for the user/farmer.

Consequently, existence of the aforementioned problems in and the inefficacy of the available solutions necessitated making an improvement in the technical field of the spring mechanism in the legs used in spring type soil blasting machines.

OBJECTS OF THE INVENTION

The present invention relates to a spring mechanism in the legs performing tillage in the spring type tillage and blasting system that meets all the aforementioned requirements, that eliminates all disadvantages and provides further advantages.

The main object of the present invention is to ensure that the leg rises upwards as in Figure- 5 when the leg comes into contact with the stones etc. in the soil, and the shaft in the spring mechanism is mounted so as to engage the shaft bearing by means of the renewed spring mechanism. Thus, to present a structure that eliminates situations such as weakening of the structural strength of the shaft caused by grooving or welding as in the state of the art by means of strengthening the increased structural strength against breakages.

Structural and characteristic features of the present invention will be understood clearly by the following drawings and the detailed description provided with reference to these drawings, and therefore the respective evaluation should be conducted by taking these figures and the detailed description into consideration.

BRIEF DESCRIPTION OF THE FIGURES

The present invention should be evaluated with the figures described below in order to ensure the best understanding of the embodiment and all advantages together with the additional components of the invention.

Figure - 1 is the assembled view of the spring type soil blasting leg in which it is used ( in which spring mechanism is applied) according to an embodiment of the present invention.

Figure - 2 is the sectional view of the spring-type soil blasting leg in which it is used(in which spring mechanism is applied) according to an embodiment of the present invention. Figure - 3 is a descriptive view of the assembly technique of the assembled spring mechanism of the present invention.

Figure - 4 is the operating view of the spring mechanism in the spring type soil blasting leg, in which it is used according to an embodiment of the present invention.

Figure - 5 is the detailed views of the shaft and bearing parts of the spring mechanism made with screw joining in the state of the art.

Figure - 6 is the detailed views of the shaft and bearing parts of the spring mechanism made with screw joining in the state of the art.

Figure - 7 is the detailed views of the shaft and bearing parts of the spring mechanism made with welded joining in the state of the art.

Figure - 8 is the general view of the spring chisel blasting (cultivator) soil tillage machine, which performs spring type soil blasting, in which the spring mechanism of the present invention is applied according to an embodiment of the invention.

Figure - 9 is the general view of the strip-like soil tillage machine and the view of the soil tillage unit that performs spring type soil blasting cultivation in the state of the art.

REFERENCE NUMERALS:

10. Chassis

100. Spring type soil blasting leg

110. Spring Mechanism

111. Shaft

111.1. shaft head

112. Shaft bearing

112.1. Shaft fixing bush

112.2. Bearing bush

112.3. Bolt

112.4. Nut

113. Large pressure spring

114. Small pressure spring

115. Spring fixing cap

116. Shaft bearing bush

117. Shaft bearing cap

118. Steel washer

119. Corrugated washers and nut

120. Leg fixing plate and fasteners

130. Leg Group 140. Leg connection lower arm group

The region of breakage with the notch effect

K. Welding points

X. Tillage position

X’. Passive position y. Direction

Figures do not necessarily have to be scaled, and redundant details that are not required for understanding the present invention may be omitted. Additionally, components that are at least substantially identical or at least have substantially identical functions are indicated with the same number.

DETAILED DESCRIPTION OF THE INVENTION

In this detailed description, the spring mechanism (110) of the present invention is shown on a spring type soil blasting leg (100), and the preferred embodiments of the spring-type soil blasting leg (100) are described only for a better understanding of the subject and without constituting any limiting effect.

Each of the spring type soil blasting legs (100) of the present invention is basically comprises leg fixing plate and fasteners (120) where all the elements forming the leg are being connected from the rear side, leg group (130) that contacts with the soil and ensures tilling the soil, leg connection lower arm group (140) that acts as a lower bearing for connecting the foot to the chassis (10) and also allows for the parallelogram movement, and spring mechanism (110) that prevents spring type soil blasting leg (100) working in the soil from rising upwards and the machine from being damaged by stretching in case said leg collides with factors such as stones (Figure-1).

The spring type soil blasting leg (100) of the present invention is connected to the chassis (10). The machines provide a mobile and safe working opportunity by means of the spring mechanism (110) in the machines in which the spring type tillage and blasting system is used.

Spring mechanism (110) of the present invention comprises; shaft (111) on which springs (113,114) are seated and no screwed and/or welded connections are made; shaft bearing (112) that allows said shaft (111) to be connected to the chassis (10) and also allows for limiting the springs (113,114); shaft fixing bush (112.1), which fixes the shaft in the shaft bearing and prevents it from rotating; bearing bush (112.2) that enables the spring mechanism (110) to be connected to the chassis (10) from the shaft bearing (112), large spring (113) that allows the legs to rise upwards by flexing when bolt (112.3) and nut (112.4) thereof encounter an obstacle; small spring (114) that is inside said big spring (113) and that adjusts the pressure to come to this spring and helps the legs to flex and rise when said legs encounter an obstacle; spring fixing cap (115) that provides the bearing of the big and small springs (113,114) and keeps them fixed on the shaft (111); shaft bearing cap (117) that enables the leg fixing plate and fasteners (120) of the system to be connected; shaft bearing bush (116) between said shaft bearing cap (117) and spring fixing cap (115); steel washer (118), and corrugated washers and nut (119).

The spring-type soil blasting leg (100) prevents damage to the machine and its components by rising only the leg part exposed to a factor in the upward direction (y) when said leg coincides with the loads of stones, roots and similar in the soil by means of the spring mechanism (110) thereof. When the factor is eliminated, the deactivated leg is reactivated and continues to operate.

The shaft (111) is snap-mounted to the shaft bearing (112). After the shaft (111) is engaged to the shaft bearing (112) in the direction of movement indicated as 1 in Figure-3, the fixing bush (112.1) is driven into the shaft bearing (112) in the direction of movement indicated as 2 in Figure 3 and enables fixing the shaft (111). Here, said shaft (111) may be in different geometric forms, especially rectangular and/or hexagonal, and/or circular and/or elliptical, and/or both sides scanned, and/or one side scanned, and/or half moon (Figure-3).

The rotational movement of the shaft (111) inside the shaft bearing (112) is prevented by means of the shaft fixing bush (112.1).

The bearing bush (112.2) ensures that the shaft bearing (112) is fixed on the chassis (10) with bolts (112.3) and nuts (112.4). Large and small springs (113,114) are seated on the shaft (111) and are mounted on the leg fixing plate and fasteners (120) with the spring fixing cap (115) and the shaft bearing cap (117). The assembly of the spring mechanism (110), which is fixed with the steel washer (118) inside the leg fixing plate and the fasteners (120), has been completed (Figure - 3). Said steel washer (118) enables the spring mechanism (110) to limit the pressure adjustment without damaging the sheet in the leg fixing plate and fasteners (120).

The spring type soil blasting leg (100) moves from the tillage position (x) to the passive position (x’) in the upward direction (y) when exposed to factors such as stones while tilling the soil. Meanwhile, it transfers the load from the shaft (111) to the springs (113,114) on the shaft (111). With the incoming overload, the springs (113, 114) on the shaft (111) allow the spring fixing cap (115) and the shaft bearing cap (117) to be closed by the pressure. Meanwhile, the lower arm group (140) of the leg connection, together with the upper spring mechanism (110), flexes by making a parallelogram movement and helps it to rise in an upward direction (y) in a balanced manner. When the factor/load on the leg is removed, the pressure of the spring fixing cap (115) and the shaft bearing cap (117) applied to the springs (113,114) on the shaft (111) which is snap-mounted to the shaft bearing (112) in the spring mechanism (110) is removed, thereby helping the leg to switch from the passive position (x¹) to the tillage position (x) (Figure-4).

The shaft (111) in the spring mechanism transfers the pressure created by the sudden load on the leg (100) to the springs (113,114) which are seated on the shaft (111), thereby absorbing the pressure caused by the sudden loads.

The protection scope of this application is defined in the pending patent claims, and under no circumstances may it be construed to be limited with the detailed description provided above for illustration purposes, moreover, it is obvious that a person skilled in the art may set forth the novelty of the present invention by taking advantage of similar embodiments and/or implement this embodiment in the fields with similar purposes used in the relevant art. Therefore, it is apparent that such embodiments will lack the novelty criteria, and particularly the criteria of surpassing the state of the art.

Claims

1. A spring mechanism (110) that prevents the spring type soil blasting leg (100) used in deep tillage machines (chisel plows, subsoilers, hoe cultivator machines, strip-like soil tillage machines, crowbar, cultivator etc.) in which the spring-type soil tillage and blasting system are used in the agricultural sector, from rising upwards by flexing and from damaging the machine by providing the spring movement of said leg without the inversion of the soil, characterized by comprising;

• At least one shaft (111) on which the springs (113,114) are mounted and that transfers the load to the springs (113,114), that is snap-mounted to the shaft bearing (112) without any screwed and/or welded connections, that is connected with the chassis (10) at one end, and the leg fixing plate and connecting elements (120) at the other end,

• At least one shaft bearing (112) on which the shaft (111) is mounted in an engaging manner, that enables said shaft (111) to be connected to the chassis (10) and limiting the springs (113,114),

• A shaft fixing bush (112.1) that prevents the rotational movement of the shaft (111) in the shaft bearing (112) and also acts as a bearing

2. A spring mechanism (110) according to Claim 1 , characterized in that, the shaft head part (11.1) of the shaft (111), remaining in the shaft bearing (112) can be used in different geometric forms such as rectangular and/or hexagonal, and/or circular and/or elliptical, and/or both sides scanned and/or one side scanned, and/or halfmoon.

3. A spring mechanism (110) according to Claim 1 or 2, characterized in that, said mechanism can be used in chisel plows (cultivators), and/or subsoilers and/or striplike soil tillage and/or cultivator type hoeing machines and/or crowbar machines and/or cultivator machines.

4. A spring mechanism (110) according to Claim 1 or 2, characterized in that, it can be used in different spring type earth blast legs.