Deep ploughing and deep scarification spiral drill bit for pull-type vertical rotary tillage and soil crushing subsoiler

Abstract

The utility model discloses a deep ploughing and deep scarification spiral drill bit for a pull type vertical rotary tillage and soil crushing subsoiler, which comprises a drill rod, a spiral blade, a soil loosening blade, shaving teeth, blade cutting teeth and a drill bit, the spiral blade is fixed on the drill rod, the soil loosening blade is fixed on the outer edge of the spiral blade, the shaving teeth are arranged at the bottom of the spiral blade, and the blade cutting teeth are arranged on the drill bit. The cutting blade teeth are arranged on the drill rod close to the drill bit, and the drill bit is fixed to the head of the drill rod. The helical blades are helical blades with unequal diameters, and the helical blades with the unequal diameters are of a single-blade or double-blade structure. The utility model has the technical effects that the spiral blades and the soil loosening blades with different diameters are used for deep ploughing, soil turning and soil loosening, and the soil crushing effect is improved. Shaving teeth and blade teeth are installed on the spiral blades and used for crushing stones and hard objects in the soil. The drill bit is provided with clay center teeth, so that the drill bit is prevented from being bonded with soil. Cutting blades are installed on a drill rod of the twist drill and play a role in cutting weeds, plant root systems and straw twining.

Description

Technical Field

[0001] The utility model relates to the field of agricultural tillage machinery, in particular to a deep tillage and loosening spiral drill bit. Background Art

[0002] The spiral drill bit is a common component in the prior art and is widely used for non-circulation drilling in soil layers, sandy soil layers, etc. Existing spiral drill bits are generally divided into single-head single-screw, double-head single-screw, and double-head double-screw. Single-head single-screw drill bits are generally used on agricultural tillage machinery, mainly to prevent the soil from sticking to the drill bit when the drill bit is in use, which affects the tillage. For deep tillage operations, it is not only easier to cause the soil to stick to the drill bit, but also the deep tillage soil needs to be made looser to facilitate the growth of crops.

[0003] Patent CN204796045U discloses an efficient spiral drill bit for deep tillage machine, in which blades are arranged on the circumferential edge of the spiral blades, and the auxiliary spiral blades cut, rub and crush the soil that is automatically raised by the spiral blades, thereby improving the efficiency of the spiral drill bit in cutting the soil layer and the working efficiency of the deep tillage machine, and at the same time facilitating the storage of more air inside the soil. However, since the blades are inclined outward at an angle of 90° to 120° relative to the circumference of the spiral blades, the cutting range is basically only within the range of the soil raised by the spiral blades, and the raising effect is very small, and the expected effect cannot be achieved. In addition, when there are weeds or plant roots and straw in the soil, the spiral blades are easily entangled.

[0004] Patent CN212079189 U discloses a drill bit for a drilling device supporting a hammer crusher, in which a cutting blade is fixedly connected to the outer surface of the spiral blade, and a loosening knife is passed through the outer side of the drill bit base, and the cutting surface of the loosening knife is arranged perpendicularly to the central axis of the drill bit, which significantly increases the scope of loosening the soil. However, the drill bit is not used for loosening the soil, but for drilling holes on the surface. Although it is disclosed that the cutting blade cuts at the edge of the hole, thereby cutting off the grass roots or tree roots, the grass roots or tree roots will not be hooked on the spiral blade when the drill bit is taken out. However, the function of the loosening knife is only to cut the grass roots or tree roots at the edge of the hole. When it goes deep into the soil, it cannot prevent the weeds or plant roots and straw in the soil from being entangled. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a deep tillage and loosening spiral drill bit which has better soil crushing effect, convenient connection and high reliability.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A deep tillage and deep loosening spiral drill bit for a towed vertical rotary tillage and soil crushing machine comprises a drill rod, a spiral blade, a loosening blade, shaving teeth, cutting blade teeth, and a drill bit. The spiral blade is fixed on the drill rod, the loosening blade is fixed on the outer edge of the spiral blade, the shaving teeth are arranged at the bottom of the spiral blade, the cutting blade teeth are arranged on the drill rod near the drill bit, and the drill bit is fixed to the head of the drill rod.

[0008] Furthermore, the spiral blades are spiral blades of unequal diameters, and the spiral blades of unequal diameters are single-blade or double-blade structures.

[0009] Furthermore, the single-blade structure is that the outer edge of the spiral blade gradually contracts inward and extends outward along the drill bit alternately, and finally the outermost edge of each 360° spiral is at an unequal distance from the longitudinal center of the drill rod, forming unequal diameter blades arranged along the drill rod; the double-blade structure is two types of blades whose outer edges are at unequal distances from the center of the drill rod, and are alternately arranged on the drill rod.

[0010] Furthermore, the distance between the blade edge of the unequal diameter blade and the center of the drill rod is set to be 1 / 3-1 / 2 of the distance between the blade edge of the small diameter blade and the center of the drill rod.

[0011] Furthermore, the utility model includes a loosening blade, which is arranged at the outer edge of a blade with a larger blade diameter among unequal diameter blades. The outer end of the loosening blade extends outwardly from the outer edge of the spiral blade, and the extension length is no more than 1 / 2 of the width of the spiral blade.

[0012] Furthermore, there are 3-5 loosening blades, which are arranged parallel to the plane of the spiral blade or perpendicular to the center line of the drill rod; when the loosening blade is arranged perpendicular to the center line of the drill rod, the angle between the cutting surface of the loosening blade and the horizontal plane of the drill rod is between 15° and 45°.

[0013] Furthermore, the utility model includes shaving teeth, and the shaving teeth are evenly distributed at the bottom of the spiral blade with a larger blade diameter.

[0014] Furthermore, the utility model includes cutting blade teeth, which are arranged on the drill rod near the drill bit, and two cutting blade teeth are arranged, which are fixed on the drill rod at equal distances perpendicular to the center line of the drill rod.

[0015] Furthermore, the drill bit of the utility model is provided with clay center teeth, which are teeth protruding outward from the top of the drill bit or grooves extending from the top to the bottom of the drill bit. The grooves are set to 6-12 and are evenly distributed on the surface of the drill bit.

[0016] The technical effects of the utility model are:

[0017] The deep tillage and loosening spiral drill bit of the utility model is connected to the output shaft flange of the mechanical transmission box through its end flange, with accurate coaxiality and convenient fixation, realizing the convenience of disassembly, installation and maintenance and miniaturization of the structure, and has a simple structure and good stability, and has good structural stability and operational safety, and realizes good anti-torque performance and stability.

[0018] The utility model spiral drill has spiral blades and loosening blades of different diameters installed on the drill rod for deep tillage and loosening the soil, thereby improving the soil crushing effect. The spiral blades are equipped with shaving teeth and blade teeth for crushing stones and hard objects in the soil. The drill bit is equipped with clay center teeth, which is beneficial to prevent the drill bit from sticking to the soil.

[0019] The drill rod of the spiral drill of the utility model is provided with cutting blades, which play the role of cutting weeds, plant roots and entangled straws. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model.

[0021] In the figure: 1. drill rod; 2. spiral blade; 3. loosening blade; 4. shaving teeth; 5. cutting blade teeth; 6. drill bit; 7. center tooth. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is further described below in conjunction with the accompanying drawings.

[0023] See attached Figure 1 The utility model is a deep tillage and deep loosening spiral drill bit for a towed vertical rotary tillage and soil crushing and deep loosening machine, comprising a drill rod 1, a spiral blade 2, a loosening blade 3, a shaving tooth 4, a cutting blade tooth 5, and a drill bit 6. The spiral blade is fixed on the drill rod, the loosening blade 3 is fixed on the outer edge of the spiral blade 2, the shaving tooth 4 is arranged at the bottom of the spiral blade 2, the cutting blade tooth 5 is arranged on the drill rod 1 close to the drill bit 6, and the drill bit 6 is fixed to the head of the drill rod 1.

[0024] In the utility model, the spiral blades 2 installed on the drill rod 1 of the auger are of unequal diameters. The unequal diameter structure can be set in two ways. The first is to adopt a single-blade structure, so that the outer edge of the spiral blade 2 is gradually contracted inward and stretched outward along the drill bit alternately, and finally the outermost edge of each 360° spiral is at an unequal distance from the longitudinal center of the drill rod 1, forming unequal diameter blades set along the drill rod 1. The second is to adopt a double-blade structure, which is two types of blades with unequal distances between the outer edges of the two blades and the center of the drill rod 1, and are alternately set on the drill rod 1. The advantage of using the above-mentioned unequal diameter blades is that when the auger drill bit is deep plowing, the two unequal diameter blades generate different rotational thrusts on the soil they contact, so that the space in the rotary tilled soil is increased due to different forces, making the rotary tilled soil looser. In the utility model, the distance between the blade edge of the unequal diameter blade and the center of the drill rod is set so that the distance between the edge of the small diameter blade and the center of the drill rod is 1 / 3-1 / 2 of the distance between the edge of the large diameter blade and the center of the drill rod. This structure and distance setting can achieve an ideal looseness of the soil during rotary tillage.

[0025] In order to further loosen the soil, the utility model is provided with 3-5 loosening blades 3 on the outer edge of the blade with a larger blade diameter among the unequal diameter blades, and the outer end of the loosening blade 3 extends outward from the outer edge of the outer edge of the spiral blade 2, and the extension length is not greater than 1 / 2 of the width of the spiral blade 2. During deep tillage and loosening operations, due to the effect of the loosening blade 3, the soil in a certain range of the area where the spiral blade 2 is located can be loosened in advance, and then the spiral blade 2 is rotated and cut to loosen, so that the looseness of the soil reaches an ideal level. In particular, the spiral drill bit of the utility model is used for rotary tillage machinery. When the machine is driven and moves forward in the soil at the same time, the effect of the loosening blade 3 is more obvious. When the spiral drill bit rotates and moves horizontally, the loosening blade 3 can pre-cut and loosen the soil at the front end of the spiral drill bit in the horizontal running direction, and then the spiral blade 2 rotates and turns the soil to loosen it, which further increases the space between the soils and makes the soil looser.

[0026] The utility model loosening blade 3 can be arranged parallel to the plane of the spiral blade 2, or perpendicular to the center line of the drill rod 1. When the loosening blade 3 is arranged parallel to the plane of the spiral blade 2, the cutting surface of the loosening blade 3 to the soil is the same as that of the spiral blade 2. When the setting mode is perpendicular to the center line of the drill rod 1, the cutting surface of the loosening blade 3 and the cutting surface of the spiral blade 2 are at a certain angle, and the cutting area of ​​the soil is larger and the effect is better. The loosening blade 3 can be welded or fixed to the spiral blade by a connecting structure. When the setting mode is perpendicular to the center line of the drill rod 1, the angle between the cutting surface of the loosening blade 3 and the transverse plane of the drill rod 1 is generally between 15° and 25°. Of course, the angle can also be adjusted by adjusting the inclination of the loosening blade 3, and can be further tilted to an angle of up to 45° with the transverse plane of the drill rod 1. If the angle is too large, the resistance generated by cutting the soil is too large, which affects the deep ploughing and deep loosening operation.

[0027] At the same time, in order to prevent soil from sticking to the spiral blade 2, a plurality of shaving teeth 4 are provided at the bottom of the spiral blade 2 of the utility model, and the shaving teeth 4 are evenly distributed at the bottom of the spiral blade 2 with a larger blade diameter, thereby increasing the contact area between the spiral blade 2 and the soil, which is beneficial to preventing the spiral blade 2 from sticking to the soil. The utility model is provided with cutting blade teeth 5 on the drill rod 1 near the drill bit, and the cutting blade teeth 5 are provided with two, and are fixed on the drill rod 1 at equal distances perpendicular to the center line of the drill rod 1 by welding or other means, and are used to cut weeds, plant roots or straws, and prevent weeds, plant roots or straws from being entangled on the spiral blade 2. At the same time, the shaving teeth 4 and cutting blade teeth 5 provided in the utility model also have the function of crushing stones and hard objects in the soil.

[0028] The drill bit 6 of the utility model is provided with clay center teeth to prevent the drill bit from sticking to the soil. The center teeth 7 are teeth protruding outward from the top of the drill bit or grooves extending from the top to the bottom of the drill bit 6. The grooves are set to 6-12 and are evenly distributed on the surface of the drill bit.

[0029] The utility model has a flange at the other end of the drill rod, which is used for connecting with the transmission output shaft of the machine.

[0030] The utility model has small blades such as a loosening blade 3, a shaving tooth 4, and a cutting blade tooth 5 attached to the spiral blade 2, which integrates deep soil loosening, surface soil loosening, and soil block breaking into one, has a deep soil drilling and a high soil breaking efficiency, can increase the oxygen content deep in the soil, is beneficial to the growth of crop roots, and increases crop yields; the storage device can be used for sowing or fertilizing, and is multifunctional, simple and practical.

[0031] The above-mentioned utility model can still modify the technical solution or replace some of the technical features with equivalents for the field. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A deep tillage and deep loosening spiral drill bit for a towed vertical rotary tillage and soil crushing subsoiler, characterized by: The invention comprises a drill rod (1), a spiral blade (2), a loosening blade (3), shaving teeth (4), cutting blade teeth (5), and a drill bit (6), wherein the spiral blade is fixed on the drill rod, the loosening blade (3) is fixed on the outer edge of the spiral blade (2), the shaving teeth (4) is arranged at the bottom of the spiral blade (2), the cutting blade teeth (5) are arranged on the drill rod (1) close to the drill bit (6), and the drill bit (6) is fixed on the head of the drill rod (1).

2. The deep tillage and deep loosening spiral drill bit for a towed vertical rotary tillage and soil crushing and deep loosening machine according to claim 1 is characterized by: The spiral blades (2) are spiral blades (2) of unequal diameter, and the spiral blades (2) of unequal diameter are single-blade or double-blade structures.

3. The deep tillage and deep loosening spiral drill bit for a towed vertical rotary tillage and soil crushing and deep loosening machine according to claim 2, characterized in that: The single-blade structure is that the outer edge of the spiral blade (2) gradually contracts inward and extends outward along the drill bit alternately, and finally the outermost edge of each 360° spiral is at different distances from the longitudinal center of the drill rod (1), forming unequal diameter blades arranged along the drill rod (1); the double-blade structure is two types of blades whose outer edges are at different distances from the center of the drill rod (1), and are alternately arranged on the drill rod (1).

4. The deep tillage and deep loosening spiral drill bit for a towed vertical rotary tillage and soil crushing subsoiler according to claim 3 is characterized by: The distance between the blade edge of the unequal diameter blade and the center of the drill rod (1) is set such that the distance between the blade edge of the small diameter blade and the center of the drill rod (1) is 1 / 3-1 / 2 of the distance between the blade edge of the large diameter blade and the center of the drill rod (1).

5. The deep tillage and deep loosening spiral drill bit for a towed vertical rotary tillage and soil crushing and deep loosening machine according to claim 1, characterized in that: It comprises a loosening blade (3) which is arranged at the outer edge of a blade with a larger blade diameter among the unequal diameter blades. The outer end of the loosening blade (3) extends outward from the outer edge of the spiral blade (2), and the extension length is no more than 1 / 2 of the width of the spiral blade (2).

6. The deep tillage and deep loosening spiral drill bit for a towed vertical rotary tillage and soil crushing and deep loosening machine according to claim 5, characterized in that: There are 3 to 5 loosening blades (3) which are arranged parallel to the plane of the spiral blade (2) or perpendicular to the center line of the drill rod (1). When the loosening blades (3) are arranged perpendicular to the center line of the drill rod (1), the angle between the cutting surface of the loosening blade (3) and the transverse plane of the drill rod (1) is between 15° and 45°.

7. The deep tillage and deep loosening spiral drill bit for a towed vertical rotary tillage and soil crushing subsoiler according to claim 1, characterized in that: The invention comprises shaving teeth (4), wherein the shaving teeth (4) are evenly distributed at the bottom of a spiral blade (2) with a larger blade diameter.

8. The deep tillage and deep loosening spiral drill bit for a towed vertical rotary tillage and soil crushing subsoiler according to claim 1, characterized in that: It comprises cutting blade teeth (5) arranged on a drill rod (1) close to a drill bit (6); two cutting blade teeth (5) are arranged and fixed on the drill rod (1) at equal distances perpendicular to the center line of the drill rod (1).

9. The deep tillage and deep loosening spiral drill bit for a towed vertical rotary tillage and soil crushing subsoiler according to claim 1, characterized in that: The drill bit (6) is provided with clay center teeth, and the center teeth (7) are teeth protruding outward from the top of the drill bit (6) or grooves extending from the top to the bottom of the drill bit (6). The number of the center teeth (7) is 6-12 and they are evenly distributed on the surface of the drill bit (6).

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