CN217336392U

CN217336392U - But variable diameter's tree planting drill bit

Info

Publication number: CN217336392U
Application number: CN202221363395.8U
Authority: CN
Inventors: 李云杰; 王会亮; 徐子宇; 王礼杰; 游玉诚; 谢科玥; 童前恒
Original assignee: Henan University of Science and Technology
Current assignee: Henan University of Science and Technology
Priority date: 2022-06-01
Filing date: 2022-06-01
Publication date: 2022-09-02
Anticipated expiration: 2032-06-01

Abstract

The utility model discloses a variable diameter tree planting drill bit, which relates to the technical field of tree planting tools and comprises an auger stem, a drill base is fixedly arranged at the bottom end of the auger stem, an upper support is sleeved on the surface of the drill base in a movable manner, a nut is arranged on the surface of the drill base in a threaded manner, a lower support is sleeved on the surface of the drill base in a fixed manner, a connecting block is integrally formed on the surfaces of the upper support and the lower support, an upper connecting rod is movably arranged on the side surface of the upper support, and one end of the upper connecting rod, which is far away from the upper support, is movably connected with a lower connecting rod; the utility model discloses a position of control upper bracket controls the maximum bore that encloses between connecting rod and the lower connecting rod, realizes digging the change of tree pit bore, is favorable to the sapling root to place, and in addition, each part of drill bit all comprises each part, and even there is the part easily to consume the part damage also be convenient for change, has increased the life of drill bit.

Description

Variable diameter tree planting drill bit

Technical Field

The utility model relates to a tree planting instrument technical field especially relates to a tree planting drill bit of variable diameter.

Background

The development concept that the green water green mountain is the Jinshan Yinshan is always adhered to in China, and the most pertinent one is the tree planting, for example, the famous Shihan dam forest field is the result of the common efforts of several generations of Shihan cup forest field people, and the tree planting process basically comprises the steps of digging tree pits, planting saplings and sealing earth.

When different types of saplings are planted, the saplings are not consistent in size and thickness, tree pits with different calibers are dug, the tree pits dug through spiral drilling driven by an electric drill are mostly arranged on the market, if the calibers are changed, a drill bit needs to be replaced back and forth, and the back and forth disassembly process is very troublesome.

SUMMERY OF THE UTILITY MODEL

The utility model provides a but variable diameter's tree planting drill bit has realized that the bore of digging a pit is variable at the planting tree in-process to form the bell mouth in the bottom, be favorable to the technical problem that the sapling root was placed.

For solving the technical problem, the utility model provides a pair of variable diameter's tree planting drill bit, including auger stem, auger stem's bottom fixed mounting has the drill bit base, the upper bracket has been cup jointed in the surface activity of drill bit base, the nut is installed to the surface thread of drill bit base, the fixed surface cover of drill bit base is equipped with the undersetting, the integrated formation in surface of upper bracket and undersetting has the connecting block, the side movable mounting of upper bracket has the upper connecting rod, the one end swing joint that the upper bracket was kept away from to the upper connecting rod has the lower connecting rod, the junction movable mounting of upper connecting rod and lower connecting rod has connecting rod outside flange.

Preferably, the drill base comprises an installation rod, threads are arranged on the surface of the installation rod, a drill point is fixedly installed at the bottom end of the installation rod, and the bottom of the drill point is designed to be in a cross sharp drilling tooth shape.

Preferably, one end of the lower connecting rod, which is far away from the upper connecting rod, is movably connected with the side surface of the lower support, and the side surface of the lower connecting rod is in a sharp shape of the drilling tooth.

Preferably, the number of the upper connecting rods is four, the axes and the shafts of the upper support of the four upper connecting rods are distributed on the side face of the upper support, the number of the nuts is two, and the two nuts are respectively attached to the upper surface and the lower surface of the upper support.

Preferably, the side surface of the connecting rod outer side rib is provided with an arc rib, and two ends of the connecting rod outer side rib are sharp.

Preferably, the surface of the auger stem is provided with external threads.

Compared with the prior art, the utility model provides a pair of variable diameter tree planting drill bit has following beneficial effect:

the utility model provides a variable diameter's tree planting drill bit, the position through the control upper bracket controls the maximum bore that encloses between connecting rod and the lower connecting rod, realizes digging the change of tree pit bore, is favorable to the sapling root to place, and in addition, each part of drill bit all comprises each part, even there is the part easily to consume the part and damage also be convenient for change, has increased the life of drill bit.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the minimum caliber structure of the present invention;

FIG. 3 is a perspective assembly view of the lower half of the drill of the present invention;

fig. 4 is a schematic view of the structure of the joint of the upper and lower connecting rods of the present invention.

Reference numbers in the figures: 1. a auger stem; 2. an upper connecting rod; 3. a lower connecting rod; 4. the outside of the connecting rod is provided with a flange; 5. an upper support; 6. A nut; 7. a drill base; 8. a lower support; 71. mounting a rod; 72. a drill bit.

Detailed Description

As shown in the figures 1-4, the utility model comprises an auger stem 1, a drill base 7 is fixedly arranged at the bottom end of the auger stem 1, an upper support 5 is movably sleeved on the surface of the drill base 7, a nut 6 is installed on the surface of the drill base 7 by screw threads, a lower support 8 is fixedly sleeved on the surface of the drill base 7, a connecting block is integrally formed on the surfaces of the upper support 5 and the lower support 8, an upper connecting rod 2 is movably arranged on the side surface of the upper support 5, a lower connecting rod 3 is movably connected at one end of the upper connecting rod 2 far away from the upper support 5, a connecting rod outer side baffle edge 4 is movably arranged at the joint of the upper connecting rod 2 and the lower connecting rod 3, the drill base 7 comprises an installation rod 71, screw threads are arranged on the surface of the installation rod 71, a drill tip 72 is fixedly arranged at the bottom end of the installation rod 71, the bottom of the drill tip 72 is designed into a cross sharp drill tooth shape, one end of the lower connecting rod 3 far away from the upper connecting rod 2 is movably connected with the side surface of the lower support 8, the side of lower connecting rod 3 establishes to bore the sharp shape of tooth, and the quantity of going up connecting rod 2 is four, and four last connecting rod 2 above the axis and the axle distribution of support 5 are in the side of last support 5, and the quantity of nut 6 is two, and two nuts 6 are laminated with the upper and lower two sides of upper bracket 5 respectively mutually, and the side of connecting rod outside flange 4 is equipped with the arc flange, and the both ends of connecting rod outside flange 4 establish to sharp shape, and auger stem 1's surface is equipped with the external screw thread.

The working principle is as follows: the maximum caliber enclosed between the upper connecting rod 2 and the lower connecting rod 3 is controlled by controlling the position of the upper support 5, the change of the caliber of the tree digging pit is realized, the root of the tree seedling is favorably placed, in addition, each part of the drill bit is composed of each part, even if part of the parts which are easy to damage are damaged, the replacement is convenient, and the service life of the drill bit is prolonged.

The implementation steps are as follows:

the upper support is fixed by the upper nut 6 and the lower nut 6 of the upper support 5, the upper support 5 is driven to move up and down by the up-and-down movement of the two nuts 6, the upper support 5 drives the upper connecting rod 2 to move up and down, the maximum caliber surrounded by the upper connecting rod and the lower connecting rod is further changed, and finally the change of the caliber of the tree digging pit is realized; the latter half of drill bit realizes the change of bore, and 1 part of spiral drill pipe can be to the soil that the ground surface transported to bore above that, and it provides a decurrent power to bore to get for whole drill bit downwards simultaneously, moreover, the tree pit bottom general condition that drills out like this can be bigger than a bit, forms the bell mouth, is favorable to the placing of sapling root.

Claims

1. A variable diameter tree planting drill bit, includes auger stem (1), its characterized in that: the utility model discloses a drill bit, including auger stem (1), drill bit base (7), upper bracket (5) have been cup jointed in the surface activity of drill bit base (7), nut (6) are installed to the surface screw thread of drill bit base (7), the fixed cover in surface of drill bit base (7) is equipped with undersetting (8), the integrated formation in surface of upper bracket (5) and undersetting (8) has the connecting block, the side movable mounting of upper bracket (5) has last connecting rod (2), the one end swing joint that upper bracket (5) were kept away from in last connecting rod (2) has lower connecting rod (3), go up connecting rod (2) and the junction movable mounting of lower connecting rod (3) has connecting rod outside flange (4).

2. The variable diameter tree planting drill according to claim 1, wherein the drill base (7) comprises a mounting rod (71), the surface of the mounting rod (71) is provided with screw threads, the bottom end of the mounting rod (71) is fixedly provided with a drill tip (72), and the bottom of the drill tip (72) is provided with a criss-cross sharp tooth shape.

3. The variable diameter tree planting drill bit according to claim 1, characterized in that the end of the lower connecting rod (3) far away from the upper connecting rod (2) is movably connected with the side of the lower support (8), and the side of the lower connecting rod (3) is provided with a sharp shape of drilling tooth.

4. The variable diameter tree planting drill bit according to claim 1, wherein the number of the upper connecting rods (2) is four, the axes and the shafts of the upper supports (5) of the four upper connecting rods (2) are distributed on the side surfaces of the upper supports (5), the number of the nuts (6) is two, and the two nuts (6) are respectively attached to the upper surface and the lower surface of the upper supports (5).

5. The variable diameter tree planting drill bit as claimed in claim 1, wherein the side of the connecting rod outer rib (4) is provided with an arc rib, and both ends of the connecting rod outer rib (4) are sharp.

6. A variable diameter tree planting drill according to claim 1, characterized in that the surface of the auger (1) is provided with an external thread.