Telescopic earth excavation auger stem

Abstract

The utility model discloses a telescopic earth excavation spiral drill rod, which relates to the technical field of earth excavation and comprises a drill rod main body, spiral blades are circumferentially connected to the outer surface of the drill rod main body, a telescopic drill rod is movably connected to the inside of the drill rod main body, movable rods are movably connected to two sides of the inside of the telescopic drill rod, and the movable rods are movably connected to the outer surface of the drill rod main body. A plurality of limiting holes are formed in the inner walls of the two sides of the drill rod body at equal intervals, limiting rods are connected to the lower portions of the surfaces of the sides, close to the limiting holes, of the movable rods, one ends of the limiting rods extend into the limiting holes, and the top end of the telescopic drill rod extends to the position above the top end of the drill rod body. According to the telescopic drilling rod, a series of structures are arranged, so that the overall length of the drilling rod main body and the telescopic drilling rod can be increased in the earthwork excavation process, and the telescopic drilling rod is convenient to use. And the earth excavation depth is not limited by the height of the tower.

Description

Technical Field

[0001] The utility model relates to the technical field of earth excavation, in particular to a telescopic earth excavation spiral drill rod. Background Art

[0002] Earthwork is one of the main projects in construction engineering, including all aspects of earth (stone) excavation, filling, transportation, drainage, precipitation, etc. In existing earth excavation work, spiral drill rods are often used to excavate earth.

[0003] When using existing earthwork excavation auger rods, the drilling depth is limited by the tower height of the pile driver. The length of the auger rod cannot exceed the height of the pile frame, and thus earthwork deeper than the pile frame height cannot be excavated, which reduces the practicality of the auger rod. Utility Model Content

[0004] The purpose of the utility model is to provide a telescopic earth excavation auger rod to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a telescopic earth excavation spiral drill rod, comprising a drill rod body, the outer surface of the drill rod body being circumferentially connected with spiral blades, a telescopic drill rod being movably connected inside the drill rod body, movable rods being movably connected on both sides of the interior of the telescopic drill rod, a plurality of limiting holes being equidistantly provided on the inner walls of both sides of the drill rod body, a limiting rod being connected to the lower part of the surface of one side of the movable rod close to the limiting hole, one end of the limiting rod extending into the limiting hole, the top end of the telescopic drill rod extending to above the top end of the drill rod body, extrusion rods being movably connected to the surfaces of the extended end of the telescopic drill rod, one end of the extrusion rod extending into the interior of the telescopic drill rod, and the extended end of the extrusion rod being connected to the movable rod.

[0006] Preferably, a plurality of springs are connected between the two movable rods.

[0007] Preferably, a drill bit is detachably mounted on the bottom end of the drill rod body, and drill blades are circumferentially connected to the outer surface of the drill bit.

[0008] Preferably, the bottom end of the drill rod body is connected to a first flange, the top end of the drill bit is connected to a second flange, and the first flange and the second flange are internally threadedly connected with bolts.

[0009] Preferably, a slide groove is provided at both the upper and lower ends of the interior of the telescopic drill rod, and sliders are movably connected to both sides of the interior of the slide groove, and the sliders are connected to the movable rod.

[0010] Preferably, the top end of the telescopic drill rod is connected to a third flange.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] The telescopic earth excavation spiral drill rod is provided with an extrusion rod, a limit rod and a limit hole. When it is necessary to adjust the length of the drill rod body and the telescopic drill rod as a whole, the two extrusion rods are pressed by hand to move the limit rod out from the inside of the limit hole. In this way, the length of the drill rod body and the telescopic drill rod as a whole can be increased during the earth excavation process, so that the depth of earth excavation will not be limited by the height of the tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the internal cross-sectional structure of the drill rod body of the present utility model;

[0015] Figure 3 For the utility model Figure 1 Schematic diagram of the enlarged structure of A in the middle;

[0016] Figure 4 For the utility model Figure 2 Schematic diagram of the enlarged structure of B;

[0017] Figure 5 For the utility model Figure 2 Schematic diagram of the enlarged structure of C in the middle.

[0018] In the figure: 1. Drill rod body; 2. Spiral blade; 3. Drill bit; 4. Drill bit blade; 5. First flange; 6. Second flange; 7. Bolt; 8. Telescopic drill rod; 9. Slide; 10. Slider; 11. Movable rod; 12. Limit rod; 13. Limit hole; 14. Extrusion rod; 15. Spring; 16. Third flange. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] like Figures 1 to 5As shown, the telescopic earthwork excavation auger rod of this embodiment includes a drill rod body 1, the outer surface of the drill rod body 1 is circumferentially connected with a spiral blade 2, the spiral blade 2 is a rotating structure, the drill rod body 1 is movably connected with a telescopic drill rod 8, both sides of the telescopic drill rod 8 are movably connected with a movable rod 11, the inner walls of both sides of the drill rod body 1 are equidistantly provided with a plurality of limiting holes 13, the lower part of the surface of the movable rod 11 near the limiting hole 13 is connected to the limiting rod 12, one end of the limiting rod 12 extends to the inside of the limiting hole 13, the top of the telescopic drill rod 8 extends to the top of the drill rod body 1, and the surfaces on both sides of the extended end of the telescopic drill rod 8 are movably connected There is an extrusion rod 14, one end of the extrusion rod 14 extends into the telescopic drill rod 8, and the extended end of the extrusion rod 14 is connected to the movable rod 11. By pressing the two extrusion rods 14 by hand, the two extrusion rods 14 drive the two movable rods 11 to move in opposite directions, and the movable rod 11 drives the limiting rod 12 to move toward the outside of the limiting hole 13 until the limiting rod 12 moves out of the limiting hole 13, so that the restraining force of the limiting rod 12 on the telescopic drill rod 8 disappears, and then the telescopic drill rod 8 is pulled outward a section, so that the overall length of the drill rod body 1 and the telescopic drill rod 8 can be increased during the excavation process, so that the depth of excavation will not be limited by the height of the tower.

[0021] A plurality of springs 15 are connected between the two movable rods 11. During the rebound process of the springs 15, the two extrusion rods 14 are driven to move together with the limit rod 12 toward the limit hole 13 until the limit rod 12 is inserted into the limit hole 13. A drill bit 3 is detachably mounted on the bottom end of the drill rod body 1. The drill bit 3 is a pointed structure. The outer surface of the drill bit 3 is circumferentially connected with drill blades 4. The outer diameter of the drill blades 4 increases gradually from bottom to top, so that it has a stronger penetration ability. The bottom end of the drill rod body 1 is connected to a first flange 5. The top end of the drill bit 3 is connected to the first flange 5. It is connected to a second flange 6, and the first flange 5 and the second flange 6 are commonly threadedly connected with bolts 7, through which the drill rod body 1 and the telescopic drill rod 8 can be detachably installed; the upper and lower ends of the telescopic drill rod 8 are provided with slide grooves 9, and both sides of the slide groove 9 are movably connected with sliders 10, and the slider 10 is connected to the movable rod 11, and moves along the slide groove 9 through the movable rod 11 through the slider 10; the top of the telescopic drill rod 8 is connected to a third flange 16, and the telescopic drill rod 8 is connected to the power source through the third flange 16.

[0022] The method of using this embodiment is as follows: when it is necessary to adjust the overall length of the drill rod body 1 and the telescopic drill rod 8, the two extrusion rods 14 are pressed by hand, and the two extrusion rods 14 drive the two movable rods 11 to move in opposite directions. At this time, the spring 15 is in a compressed state, and the movable rod 11 drives the limiting rod 12 to move toward the outside of the limiting hole 13 until the limiting rod 12 moves out of the limiting hole 13, so that the restraining force of the limiting rod 12 on the telescopic drill rod 8 disappears, and then the telescopic drill rod 8 is pulled out a section, and the limiting rod 12 is aligned with a limiting hole 1 3, release the force pressing the two extrusion rods 14, and at this time, the spring 15 drives the two extrusion rods 14 together with the limit rod 12 to move toward the limit hole 13 during the rebound process, until the limit rod 12 is inserted into the limit hole 13, so that the overall length of the drill rod body 1 and the telescopic drill rod 8 can be increased during the excavation process, so that the excavation depth will not be limited by the height of the tower. When the drill bit 3 is damaged, the bolts 7 are removed from the first flange 5 and the second flange 6, so that the damaged drill bit 3 can be easily replaced.

[0023] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A telescopic earthwork excavation auger, comprising a drill rod body (1), characterized in that: The outer surface of the drill rod body (1) is circumferentially connected with a spiral blade (2), the interior of the drill rod body (1) is movably connected with a telescopic drill rod (8), both sides of the interior of the telescopic drill rod (8) are movably connected with a movable rod (11), the inner walls of both sides of the drill rod body (1) are equidistantly provided with a plurality of limiting holes (13), the lower part of the surface of the movable rod (11) close to the limiting hole (13) is connected with a limiting rod (12), one end of the limiting rod (12) extends into the limiting hole (13), the top end of the telescopic drill rod (8) extends to above the top end of the drill rod body (1), both sides of the extended end of the telescopic drill rod (8) are movably connected with an extrusion rod (14), one end of the extrusion rod (14) extends into the interior of the telescopic drill rod (8), and the extended end of the extrusion rod (14) is connected to the movable rod (11).

2. The telescopic earth excavation auger rod according to claim 1, characterized in that: A plurality of springs (15) are connected between the two movable rods (11).

3. The telescopic earth excavation auger rod according to claim 1, characterized in that: A drill bit (3) is detachably mounted on the bottom end of the drill rod body (1), and drill blades (4) are circumferentially connected to the outer surface of the drill bit (3).

4. The telescopic earth excavation auger rod according to claim 3, characterized in that: The bottom end of the drill rod body (1) is connected to a first flange (5), the top end of the drill bit (3) is connected to a second flange (6), and the first flange (5) and the second flange (6) are internally threadedly connected with bolts (7).

5. The telescopic earth excavation auger rod according to claim 1, characterized in that: The upper and lower ends of the telescopic drill rod (8) are both provided with a slide groove (9), both sides of the slide groove (9) are movably connected with a slider (10), and the slider (10) is connected to the movable rod (11).

6. The telescopic earth excavation auger rod according to claim 1, characterized in that: The top end of the telescopic drill rod (8) is connected to a third flange (16).

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