CN203742460U

CN203742460U - Multi-cutter-tooth and multi-gap earth cutting square drill bit

Info

Publication number: CN203742460U
Application number: CN201420124996.2U
Authority: CN
Inventors: 苏明; 邢益健; 杨秀英
Original assignee: Hainan Institute of Science and Technology
Current assignee: Hainan Institute of Science and Technology
Priority date: 2014-03-19
Filing date: 2014-03-19
Publication date: 2014-07-30
Anticipated expiration: 2024-03-19

Abstract

The utility model discloses a multi-cutter-tooth and multi-gap earth cutting square drill bit. The multi-cutter-tooth and multi-gap earth cutting square drill bit comprises a main shaft, a spiral plate and multiple rows of multi-cut sharp cutter teeth, wherein the spiral plate is arranged on the main shaft and extends towards the top of the main shaft from the bottom of the main shaft, the multiple rows of multi-cut sharp cutter teeth are connected to the bottom of the spiral plate and connected with the spiral plate through a bolt, each multi-cut sharp cutter tooth is composed of four cutter tooth oblique surfaces and a cutter tooth bottom surface, the upper end of each cutter tooth bottom surface is connected with the spiral plate, a cutting edge is formed at the position where every two adjacent cuter tooth oblique surfaces are connected, the cutting edges comprise the upper cutting edge, the lower cutting edge, the left cutting edge and the right cutting edge, and the upper cutting edge and the lower cutting edge are located on the same straight line to form a perpendicular line. The multi-cutter-tooth and multi-gap earth cutting square drill bit is simple in structure, convenient to use, firm and sharp, trench excavation can be conducted smoothly on various types of soil and mountainous region with a large number of broken stones, and the trench excavation capacity is high.

Description

The many gap cuttings of multitool tooth cubic metre of earth drill bit

Technical field

The utility model relates to and agricultural machinery, especially planting fruit trees are digged pit with the many gaps cuttings of a multitool tooth cubic metre of earth drill bit.

Background technology

Trench excavator is the plant equipment that planting fruit trees is digged pit, and trench excavator drill bit is the working position of Tree Planting Earthdrill, and the quality that improves drill bit will improve the performance of trench excavator and the effect of digging pit.

At present, in domestic and international application Tree Planting Earthdrill drill bit, most single-screw or double helix " " word line style edge drilling bits of adopting, there is following defect in such drill bit: (1) drill bit is not sharp, digs pit more difficult in hard soil property; (2) dig pit and easily skid in many rubbles mountain region, rubble is difficult for discharging, the difficulty of digging pit, and meanwhile, drill bit blade and spiral plate are thinner, sensitive for damages; (3) " one " word line style edge drilling bit, drill bit structure is simple, and the resistance of digging pit is large; (4) the single bolt of bar blade connects, unstable, has the degree of freedom of rotation at in-plane, only, by the power constraint that rubs, in the time being subject to greater impact power, can rotate.

Utility model content

The purpose of this utility model be to provide a kind of simple in structure, easy to use, firm sharp, can dig pit in all kinds of soil properties and many rubbles mountain region smoothly, the many gaps cuttings of the multitool tooth cubic metre of earth drill bit that the ability of digging pit is strong.

To achieve these goals, the technical solution of the utility model is: the many gap cuttings of a kind of multitool tooth cubic metre of earth drill bit is provided, the number row multitool sharp knife tooth that comprises main shaft, is located at the spiral plate extending to top on main shaft and by main shaft bottom and is connected to spiral plate bottom, wherein, described number row multitool sharp knife tooth is connected with spiral plate by bolt; Each multitool sharp knife tooth is made up of four cutter tooth inclined-planes and a cutter tooth bottom surface; The upper end of cutter tooth bottom surface is connected with spiral plate, and the junction on every two adjacent cutter tooth inclined-planes forms blade; Described blade comprises upper knife edge, lower blade, left blade and right blade, and upper knife edge and lower blade form vertical line on same straight line.

Described multitool sharp knife number of teeth amount is at least two, and evenly the same plane distribution in interval is connected on spiral plate.

The utility model drill bit has following features: 1) cutter tooth is sharp, and multitool sharp knife tooth is made up of four cutter tooth inclined-planes and a cutter tooth bottom surface, has sharp blade and point of a knife simultaneously, can dig the pan soil matter in many rubbles mountain region; 2) casting and row's rubble smoothness, is distributed with the cutter tooth inclined-plane of multiple directions on cutter tooth, every gapped between the point of a knife of cutter tooth and point of a knife, makes casting and arranges rubble smoothness; 3) connection of multitool sharp knife tooth and spiral plate is firm, every cutter tooth distribute rational two row multiple rows bolts connect, multitool sharp knife tooth is connected firm with spiral plate.

Brief description of the drawings

Fig. 1 is the overall structure schematic diagram of the many gap cuttings of the utility model multitool tooth cubic metre of earth drill bit;

Fig. 2 is several structural representation that multitool sharp knife tooth is connected with spiral plate by bolt of the present utility model;

Fig. 3 is the lateral view that the utility model multitool sharp knife tooth is connected with spiral plate;

Fig. 4 is the sectional view of A-A direction in Fig. 3;

Fig. 5 is that the utility model one is the structural representation of multitool sharp knife tooth;

In figure: 1, main shaft; 2, spiral plate; 3, multitool sharp knife tooth; 4, bolt hole; 5, three face cone shape points of a knife; 6, blade; 7, cutter tooth inclined-plane.

Detailed description of the invention

In order to describe the technology contents, structural feature of the many gaps of the utility model multitool tooth cutting cubic metre of earth drill bit in detail, below in conjunction with embodiment and coordinate accompanying drawing to be described further.

As shown in Fig. 1,2,3,4,5, the many gap cuttings of the utility model multitool tooth cubic metre of earth drill bit, the number row multitool sharp knife tooth 3 that comprises main shaft 1, is located at the spiral plate 2 extending to top on main shaft 1 and by main shaft bottom and is connected to spiral plate 2 bottoms, described multitool sharp knife tooth 3 quantity are at least two, and evenly the same plane distribution in interval is connected on spiral plate 2, and spiral plate is welded on main shaft.

Described number row multitool sharp knife tooth 3 uses bolt to be connected with spiral plate 2 by bolt hole 4; Each multitool sharp knife tooth is made up of four cutter tooth inclined-planes 7 and a cutter tooth bottom surface; The upper end of cutter tooth bottom surface is connected with spiral plate 2, and the junction on every two adjacent cutter tooth inclined-planes 7 forms blade 6; Described blade comprises upper knife edge, lower blade, left blade and right blade, and upper knife edge and lower blade form vertical line on same straight line.The junction on described cutter tooth bottom surface and cutter tooth inclined-plane forms three face cone shape points of a knife 5.

While digging pit, first break ground and make it loose by three face cone shape points of a knife 5 sharp on multitool sharp knife tooth, then make soil layer loose by blade cutting soil layer, loosen the soil and upwards discharged by spiral plate with rubble.

Above disclosed is only preferred embodiment of the present utility model, certainly can not limit with this interest field of the utility model, and the equivalent variations of therefore doing according to the utility model claim, still belongs to the scope that the utility model is contained.

Claims

1. the many gap cuttings of multitool tooth cubic metre of earth drill bit, the number row multitool sharp knife tooth that comprises main shaft, is located at the spiral plate extending to top on main shaft and by main shaft bottom and is connected to spiral plate bottom, is characterized in that: described number row multitool sharp knife tooth is connected with spiral plate by bolt; Each multitool sharp knife tooth is made up of four cutter tooth inclined-planes and a cutter tooth bottom surface; The upper end of cutter tooth bottom surface is connected with spiral plate, and the junction on every two adjacent cutter tooth inclined-planes forms blade; Described blade comprises upper knife edge, lower blade, left blade and right blade, and upper knife edge and lower blade form vertical line on same straight line.

2. the many gap cuttings of multitool tooth as claimed in claim 1 cubic metre of earth drill bit, it is characterized in that: described multitool sharp knife number of teeth amount is at least two, and evenly the same plane distribution in interval is connected on spiral plate.