CN211184843U

CN211184843U - Multi-spiral drill bit

Info

Publication number: CN211184843U
Application number: CN201920872039.0U
Authority: CN
Inventors: 李深文; 李阳铭; 李标; 朱军; 张京文; 杨易; 韦玲云; 曾鸣
Original assignee: Guangxi Wufeng Machinery Co ltd
Current assignee: Guangxi Wufeng Machinery Co ltd
Priority date: 2019-06-11
Filing date: 2019-06-11
Publication date: 2020-08-07
Anticipated expiration: 2029-06-11

Abstract

The utility model provides a many auger bits, including drilling rod and helical blade, helical blade is provided with more than two, and all helical blade set up along drilling rod center pin symmetry, and helical blade's upper end is around establishing on the drilling rod. The utility model provides a can offset centrifugal force, reduce vibrations, improve driver's the comfortable degree of operation, alleviate tired many auger bits.

Description

Multi-spiral drill bit

Technical Field

The utility model relates to a deep ploughing drill bit, concretely relates to many auger bits.

Background

The main effect of the cultivation equipment is to carry out deep ploughing and deep scarification on the land, in the past, the deep ploughing and deep scarification machine takes a tractor as a platform, adopts old traditions such as ploughing, beating and harrowing, has complex procedures and low efficiency, can work only when the cultivated land is wet and soft, has short cultivation time and shallow cultivation depth, and is not beneficial to agricultural production. Therefore, the traditional method cannot be adapted to the large-area land requiring deep ploughing and deep scarification, and therefore, the automatic deep ploughing and deep scarification is generated.

The application number is 201020514808.9's chinese utility model patent application discloses a grind formula deep ploughing powder ridge multifunctional machinery soon, and specifically disclose it and include the engine, the gearbox, a machine support, auger and walking wheel, the sender is installed in the frame of tractor, engine shaft output passes through the shaft joint and is connected with the gearbox, there is walking wheel or athey wheel tractor chassis lower part, the gearbox passes through the chain, belt or shaft joint driving and walking wheel, install hydraulic pressure mechanism and linkage rotary grinding drill bit device or farming part on the tractor after-poppet, one or more drill bit axle is installed to the rotary grinding drill bit device, the epaxial configuration spiral leaf of drill bit, set up the angle tooth on the spiral leaf, hydraulic pressure mechanism drive rotary grinding drill bit up-and-down motion, the gearbox passes through connecting rod and gear drive rotary grinding drill bit, the linkage rotary grinding drill bit device, still be equipped with the device of cleaing away weeds and earth on the drill bit. However, the spiral blade of the rotary grinding type deep ploughing and pulverizing multifunctional machine lacks an auxiliary mechanism for digging, has large resistance to digging, and further, when the drill rod moves forward along with the deep ploughing machine while rotating during ploughing operation, the lower surface of the spiral blade is easy to be worn when the spiral blade cuts and rubs soil, and the rotary grinding type deep ploughing and pulverizing multifunctional machine has short service life and low practicability. For this reason, the above-described problems are urgently needed to be solved.

To solve the above problems, a helical drill of a subsoiler facilitating penetration into the ground has now appeared. A helical drill of a subsoiler facilitating soil penetration is disclosed in chinese patent application No. 201510064658.3, publication No. 2017.01.04. The drilling machine comprises a drill rod and a helical blade, wherein the helical blade is wound on the lower portion of the drill rod, and the drilling machine further comprises an earth-entering blade which is arranged at the tail portion of the helical blade and is positioned on the lower surface of the helical blade. The rotary drill rod has a simple structure, the drill rod rotates and moves forwards along with the deep scarification cultivator during the tillage operation, and the lower surface of the tail part of the helical blade is provided with the soil-entering blade, so that the drill rod can rotate and enter the soil at the same time, the abrasion of the helical blade can be effectively reduced, the service life of the helical blade is prolonged, and the rotary drill rod is high in practicability. However, when a drilling tool with a single helical blade is used for fast rotating operation, the helical blade and the blades arranged on the helical blade can provide centrifugal forces in different directions to the drilling rod at different heights of the drilling rod, the centrifugal forces cannot be offset, so that the whole drilling rod continuously vibrates and is conducted to the whole machine tool, when the drilling tool is used, because the loads of soil in different depths are uneven, the vibration can be further aggravated, when a plurality of drilling tools are used for operation, the mutual difficult completely synchronous disturbance of the drilling tools cannot be offset, moments in different directions can be generated at different positions of a powder ridge box, the vibration can be aggravated, the synthesized vibration is very complex, the vibration is difficult to relieve when the drilling tool with the single helical blade is used, even the research is difficult, and the stability and the service life of the whole machine and parts can be influenced. The transmission of sustained vibration to the cabin also makes the driver more fatigued to the process.

Of course, the existing double-helical blade cutting tool comprises two types, wherein one type is that the rotation directions of the helical blades are the same, so that the technical problem of the single helical blade can also occur, the soil discharging is difficult, the other type is that the rotation directions of the helical blades are opposite, and when the two types of blades are arranged in a staggered mode relative to the center of the cutting tool, the technical problem of the single helical blade can also occur.

Disclosure of Invention

For solving the problem that exists among the prior art, the utility model provides a can offset centrifugal force, reduce vibrations, improve driver's the comfortable degree of operation, alleviate tired many auger bits.

In order to achieve the above purpose, the technical scheme of the utility model is that: the utility model provides a many auger bits, includes drilling rod and helical blade, and helical blade is provided with more than two, and all helical blade set up along drilling rod center pin symmetry, and helical blade's upper end is around establishing on the drilling rod.

According to the arrangement, all the helical blades are symmetrically arranged along the central axis of the drill rod, when the multi-helical drill bit works, the helical blades can ensure that the blades of the helical blades rotate synchronously, the loads are basically consistent under different heights of the drill rod or different depths of soil, and the centrifugal force generated by the rotation of any height of the helical blade drill bit on the drill rod is basically offset; the resultant force of rotation on the whole drill rod is almost zero, and the deviation disturbance effect of a single helical blade or an asymmetric double helical blade is solved, so that the vibration of a multi-helical drill bit and the whole machine is greatly reduced, the operation comfort degree of a driver is improved, the fatigue is reduced, and the fatigue damage caused by the frequent vibration of the multi-helical drill bit is reduced.

Further, the lower end of the drill rod extends to the upper end of the helical blade; a connecting point for connecting all the spiral blades together is arranged below the drill rod; a space is formed between adjacent connection points of the helical blades. The connecting points are formed among the helical blades, so that the axial strength and the radial deformation resistance of the multi-helical drill bit can be improved, smooth soil discharging is facilitated through the formed space, and the soil discharging amount can be increased.

Furthermore, the lower ends of all the spiral blades are connected with a fixing plate so as to improve the strength of the multi-spiral drill bit.

Furthermore, the lower end of the drill rod extends to the lower end of the helical blade, and the helical blade is connected to the drill rod. By connecting the helical blade to the drill rod, the connection strength of the helical blade is improved, and the multi-helical drill has strong deformation resistance.

Furthermore, the helix angle of the helical blade is 20-30 degrees. This is more advantageous for soil removal.

Further, still include the blade, the blade sets up in helical blade's circumferential edge reason, and the blade is at least two, and at least two blades are arranged along helical blade's spiral direction interval, and the blade is towards the top of drilling rod. Through setting up the blade, it is better to the crushing effect of soil, is favorable to reducing the resistance of many auger bit radial walking moreover, improves many auger bit's bending resistance ability.

Further, the blades are installed on the double-spiral blades through the installation base plate, the blades and the installation base plate form an included angle of soil penetration, and the included angle of soil penetration is 10-20 degrees.

Furthermore, the lower end of the helical blade is provided with an earth-entering blade.

Above setting, the many auger bits that are equipped with the blade of ingressing are lighter at the in-process of ingressing.

Further, the outer diameters of the spiral blades are the same from bottom to top.

Further, the number of the helical blades is two.

Drawings

FIG. 1 is a perspective view of the first embodiment of the present invention

FIG. 2 is a perspective view of the second embodiment of the present invention

FIG. 3 is a partial enlarged view of the blade for digging into the earth

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Example one

As shown in fig. 1 and 3, a multi-spiral drill comprises a drill rod 1 and spiral blades 7, in this embodiment, the spiral blades are provided with two pieces, the rotation directions of the spiral blades are opposite, the spiral blades can be integrated, or can be formed by welding or movably connecting a plurality of sections of blades, the two spiral blades 7 are symmetrical along the central axis of the drill rod 1, the diameters of the blades are uniformly arranged, and the helix angle of the spiral blades 7 is 25 degrees, which is more beneficial to soil discharge; only the upper end of the helical blade 7 is wound on the drill rod 1, namely the lower end of the drill rod only extends to the upper end of the helical blade 7, and the two helical blades are provided with a connecting point 71 below the drill rod; a space 72 is formed between the adjacent connection points of the two helical blades, and the lower ends of the two helical blades 7 are welded with the fixing plate 4; the fixed plate 4 is a circular fixed plate 4 with the diameter same as that of the drill rod 1; the fixing plate 4 is connected with the helical blade 7, so that the length of the drill rod 1 can be reduced, the whole drill rod is light and convenient, and the connecting strength is improved; a connecting point 71 is formed between the two helical blades, so that the axial strength and the radial deformation resistance of the double-helix drill bit can be improved, smooth soil discharge is facilitated by forming a space 72, and the soil discharge amount can be increased.

The blade 2 is arranged on the helical blade 7; the blades 2 are arranged on the circumferential edge of the helical blade 7, the blades on the two helical blades are symmetrical relative to the center of the drill rod, the number of the blades 2 is at least two, the blades 2 are arranged at intervals along the helical direction of the helical blade 7, and the blades 2 face the top end of the drill rod 1.

The blade 2 is provided with a mounting base plate 21, the mounting base plate 21 is an extension part of the blade 2, an included angle α of soil penetration is formed between the blade 2 and the mounting base plate 21, the included angle of soil penetration is 15 degrees, the mounting base plate 21 is mounted on the helical blade 7 through a bolt, and the blade can also be connected to the helical blade through welding.

During operation, the two helical blades are symmetrically arranged along the central axis of the drill rod, when the multiple helical drill bits work, the helical blades can ensure that the helical blade blades rotate synchronously, the loads are basically consistent under different heights of the drill rod or different depths of soil, and the centrifugal force generated by the rotation of any height of the two helical blade drill bits to the drill rod is basically offset; the resultant force of rotation on the whole drill rod is almost zero, and the deviation disturbance effect of a single helical blade or an asymmetric double helical blade is solved, so that the vibration of the double helical drill bit and the whole machine is greatly reduced, the operation comfort degree of a driver is improved, the fatigue is reduced, and the fatigue damage caused by the frequent vibration of the double helical drill bit is reduced.

Through setting up the blade, it is better to the crushing effect of soil, is favorable to reducing the resistance of many auger bit radial walks moreover, improves the bending resistance ability of double helix drill bit.

The multi-spiral drill bit with the soil-entering blade is easier in the soil-entering process.

The multi-spiral drill bit further comprises a drill bit provided with three spiral blades, and one spiral blade is added to the multi-spiral drill bit on the basis of the embodiment.

Example two

As shown in fig. 2 and 3, the multi-spiral drill comprises a drill rod 1 and spiral blades 7, in the embodiment, the spiral blades are provided with two pieces, the rotation directions of the spiral blades are opposite, the spiral blades can be integrated, or can be formed by welding or movably connecting a plurality of sections of blades, the two spiral blades 7 are symmetrical along the central axis of the drill rod 1, the diameters of the blades are uniformly arranged, and the helix angle of the spiral blades 7 is 23 degrees, so that soil discharging is facilitated; the helical blade 7 is wound on the drill rod 1, i.e. the lower end of the drill rod extends to the lower end of the helical blade 7.

The blade 2 is provided with a mounting base plate 21, the mounting base plate 21 is an extension part of the blade 2, the blade 2 and the mounting base plate 21 form an included angle α of entering soil, the included angle of entering soil is about 15 degrees, the mounting base plate 21 is installed on the surface of the helical blade 7 through a bolt, the blade can also be connected to the helical blade through welding, and the mounting base plate can be an independent accessory or an extension part of the blade.

During operation, the two helical blades are symmetrically arranged along the central axis of the drill rod, when the multi-helical drill bit works, the helical blades can ensure that the helical blades rotate synchronously, the loads are basically consistent under different heights of the drill rod or different depths of soil, and the centrifugal force generated by the rotation of any height of the two helical blades to the drill rod is basically offset; the resultant force of rotation on the whole drill rod is almost zero, and the deviation disturbance effect of a single helical blade or an asymmetric double helical blade is solved, so that the vibration of the double helical drill bit and the whole machine is greatly reduced, the operation comfort degree of a driver is improved, the fatigue is reduced, and the fatigue damage caused by the frequent vibration of multiple helical drill bits is reduced. By connecting the helical blade to the drill rod, the connection strength of the helical blade is improved, and the multi-helical drill has strong deformation resistance.

Through setting up the blade, it is better to the crushing effect of soil, is favorable to reducing the resistance of many auger bit radial walking moreover, improves many auger bit's bending resistance ability.

Claims

1. A multi-spiral drill bit comprises a drill rod and spiral blades, wherein the spiral blades are provided with more than two pieces, and the multi-spiral drill bit is characterized in that all the spiral blades are symmetrically arranged along the central shaft of the drill rod, and the upper ends of the spiral blades are wound on the drill rod; the lower end of the drill rod extends to the upper end of the helical blade; a connecting point for connecting all the spiral blades together is arranged below the drill rod; a space is formed between adjacent connection points of the helical blades.

2. A multi-helical drill according to claim 1, wherein a fixing plate is attached to the lower ends of all the helical blades.

3. The multi-helical drill according to claim 1, wherein the helical blades have a helix angle of 20 ° to 30 °.

4. The multi-auger bit of claim 1, further comprising at least two blades disposed at a circumferential edge of the auger blade, the at least two blades being spaced apart along a helical direction of the auger blade, the blades facing a top end of the drill rod.

5. The multi-auger drill bit of claim 4, wherein the blades are mounted on the auger blades by mounting pads, the blades and the mounting pads form an included angle of penetration, the included angle of penetration being between 10 ° and 20 °.

6. A multi-auger drill according to claim 1, wherein the lower end of the helical blades are provided with cutting inserts.

7. A multi-helix drill bit according to claim 1, characterized in that the outer diameters of the helical blades are the same from bottom to top.

8. A multi-helical drill according to claim 1, wherein the helical blade is provided with two pieces.

9. A multi-spiral drill bit comprises a drill rod and spiral blades, wherein the spiral blades are provided with more than two pieces, and the multi-spiral drill bit is characterized in that all the spiral blades are symmetrically arranged along the central shaft of the drill rod, and the upper ends of the spiral blades are wound on the drill rod; the lower end of the drill rod extends to the lower end of the helical blade, and the helical blade is connected to the drill rod.

10. The multi-helical drill according to claim 9, wherein the helical blades have a helix angle of 20 ° to 30 °.

11. The multi-auger bit of claim 9, further comprising at least two blades disposed at a circumferential edge of the auger blade, the at least two blades being spaced apart in a helical direction of the auger blade, the blades facing the top end of the drill rod.

12. The multi-auger drill bit of claim 11, wherein the blades are mounted on the auger blades by mounting pads, the blades and the mounting pads form an included angle of penetration, the included angle of penetration being between 10 ° and 20 °.

13. A multi-auger drill according to claim 9, wherein the lower end of the helical blades are provided with cutting inserts.

14. A multi-helix drill bit according to claim 9, wherein the outer diameters of the helical blades are the same from bottom to top.

15. A multi-helical drill according to claim 9, wherein the helical blade is provided with two pieces.