Soil stratum rotary excavating drill bit

Abstract

The utility model relates to a soil stratum rotary digging drill bit in the technical field of rotary digging drill bits, which comprises a rotating rod, a spiral blade fixedly sleeved on the outer side of the surface of the rotating rod, and a fixed groove and a fixed slot arranged at the bottom of the rotating rod; the spiral downward moving guide mechanism is fixedly arranged on the edge of the top of the spiral blade; the rotary digging tooth mechanism is fixedly arranged at the end part of the bottom end of the spiral blade; the connecting and positioning mechanism is detachably arranged at the bottom end of the rotating rod, and can rub with the inner wall of soil when being rotationally inserted into the ground for rotary digging in the use process through the arranged spiral downward moving guide mechanism and the rotary digging tooth mechanism, so that a certain downward pressing guide acting force can be provided; the rotary excavating tooth mechanism is simple in structure and convenient to operate, rotary excavating treatment can be stably carried out under the action of being matched with a rotary excavating machine, meanwhile, after the rotary excavating tooth mechanism is abraded, internal parts of the rotary excavating tooth mechanism can be rapidly detached and replaced, and the overall structure is simple.

Description

TECHNICAL FIELD

[0001] The utility model relates to rotary drilling head technical field, especially to a soil layer rotary drilling head. BACKGROUND

[0002] The rotary drilling machine is a kind of construction machinery suitable for hole-forming operation in building foundation engineering.It is mainly suitable for sand, clay, silty soil and other soil layer construction, and is widely used in bored pile, continuous wall, foundation reinforcement and other foundation construction, and the main rotary drilling component is rotary drilling head, which can carry out rotary drilling.

[0003] The existing rotary drilling head can rotate the rotary digging tooth to the inside of soil and the spiral blade at the top can transport the soil when being used, and the rotary drilling head moves upward when rotating, which can discharge the soil in the rotary drilling process to the outside, but in actual use, the downward pressure of rotary drilling machine is mainly relied on to carry out downward rotary drilling, and the rotary drilling head itself cannot provide downward power by friction with soil during rotation, so a soil layer rotary drilling head is provided. UTILITARIAN CONTENT

[0004] In view of the above problems, the utility model provides a soil layer rotary drilling head, which can solve the problems in the background art.

[0005] The technical scheme of the utility model is:

[0006] A soil layer rotary drilling head, comprising:

[0007] A rotating rod, a spiral blade is fixedly sleeved on the surface outer side thereof, and a fixed groove and a fixed slot are formed in the bottom thereof;

[0008] A spiral downward guiding mechanism is fixedly arranged at the top edge of the spiral blade;

[0009] A rotary digging tooth mechanism is fixedly arranged at the bottom end of the spiral blade;

[0010] A connecting and positioning mechanism is detachably arranged at the bottom end of the rotating rod.

[0011] In a further technical scheme, the spiral downward guiding mechanism comprises a spiral frame at the top end edge of the spiral blade, and a spiral guiding strip is fixedly connected to the surface outer side of the middle part of the spiral frame.

[0012] In a further technical solution, the rotary drilling tooth mechanism includes a connecting mounting frame, the interior of which is provided with a fixed mounting groove, and a movable locking block is movably connected to the inner side of the connecting mounting frame. The rotary drilling tooth body is fixedly connected to the side of the movable locking block away from the spiral blade, and a first fastening bolt is provided between the rotary drilling tooth body and the connecting mounting frame.

[0013] In a further technical solution, the cross-sectional shape of the fixed mounting groove is convex, and the outer surface of the movable block is in contact with the inner side of the fixed mounting groove.

[0014] In a further technical solution, the bottom of the connecting mounting frame is provided with a through hole adapted to the first fastening bolt, and the interior of the movable locking block is provided with a thread adapted to the first fastening bolt.

[0015] In a further technical solution, the connecting positioning mechanism includes a connecting plug, the bottom end of which is fixedly connected to a connecting positioning base block, and the connecting plug and the bottom end of the rotating rod are connected by a second fastening bolt via a thread.

[0016] In a further technical solution, arc-shaped grooves are provided at equal intervals on the outer surface of the connecting positioning base block.

[0017] The beneficial effects of this utility model are:

[0018] 1. With the provided spiral downward guide mechanism and rotary drilling tooth mechanism, during use, when the rotary drilling tooth is inserted into the ground for rotary drilling, it can rub against the inner wall of the soil, thereby providing a certain downward guiding force. With the action of the rotary drilling machine, it can stably carry out rotary drilling. At the same time, when the rotary drilling tooth mechanism wears out, its internal parts can be quickly disassembled and replaced. The overall structure is simple and easy to operate.

[0019] 2. The connection and positioning mechanism facilitates early contact with the bottom layer of soil during rotary excavation, positioning the entire structure and enabling stable rotary excavation, making operation convenient. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a rotary drilling bit for soil strata according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the spiral downward guiding mechanism of a rotary drilling bit for soil strata according to an embodiment of this utility model;

[0022] Figure 3This is a schematic diagram of the rotary drilling tooth mechanism and the connecting positioning mechanism of a rotary drilling bit for soil strata according to an embodiment of this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Rotating rod;

[0025] 2. Spiral blades;

[0026] 3. Spiral downward guide mechanism; 31. Spiral frame; 32. Spiral guide strip;

[0027] 4. Rotary drilling tooth mechanism; 41. Connecting and mounting frame; 42. Fixed mounting groove; 43. Movable locking block; 44. Rotary drilling tooth body; 45. First fastening bolt;

[0028] 5. Fix the groove;

[0029] 6. Fixed slot;

[0030] 7. Connecting positioning mechanism; 71. Connecting insert block; 72. Connecting positioning base block; 73. Arc-shaped groove; 74. Second fastening bolt. Detailed Implementation

[0031] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0032] Example:

[0033] like Figures 1-3 As shown, a rotary drilling bit for soil strata includes:

[0034] Rotating rod 1, with a spiral blade 2 fixedly sleeved on its outer surface, and a fixed groove 5 and a fixed slot 6 opened at its bottom;

[0035] The spiral downward guide mechanism 3 is fixedly mounted on the top edge of the spiral blade 2;

[0036] The rotary drilling tooth mechanism 4 is fixedly installed at the bottom end of the spiral blade 2;

[0037] The connecting positioning mechanism 7 is detachably located at the bottom end of the rotating rod 1.

[0038] The working principle of the above technical solution is as follows:

[0039] After use, when the entire unit is rotary drilling into the bottom layer of soil, it can move smoothly downward under the action of the rotary drilling machine and the spiral downward guide mechanism 3. At the same time, during the upward rotation, it can also expand the size of the hole formed by rotary drilling. During the rotary drilling process, the connecting positioning mechanism 7 can also make contact with the bottom layer of soil first to perform positioning. In subsequent use, the internal components of the rotary drilling tooth mechanism 4 can be quickly disassembled and replaced. The overall structure is simple and the operation is convenient and quick.

[0040] In another embodiment, such as Figure 2 As shown, the spiral downward guide mechanism 3 includes a spiral frame 31 located at the top edge of the spiral blade 2, and a spiral guide strip 32 is fixedly connected to the middle of the outer side of the spiral frame 31.

[0041] During the rotary drilling process, the spiral guide strip 32 can rotate on the inner wall of the bottom layer of the drawing, and under the action of the thread and the rotary drilling machine, it can move stably into the interior of the soil bottom layer, making operation convenient.

[0042] In another embodiment, such as Figure 3 As shown, the rotary drilling tooth mechanism 4 includes a connecting mounting frame 41. The connecting mounting frame 41 has a fixed mounting groove 42 inside. A movable locking block 43 is movably connected to the inner side of the connecting mounting frame 41. A rotary drilling tooth body 44 is fixedly connected to the side of the movable locking block 43 away from the spiral blade 2. A first fastening bolt 45 is provided between the rotary drilling tooth body 44 and the connecting mounting frame 41.

[0043] This facilitates the rotation and disassembly of the first fastening bolt 45. Then, the rotary drilling tooth body 44 and the movable locking block 43 are moved laterally, so that the movable locking block 43 is disengaged from the inside of the connecting mounting frame 41, thereby enabling quick disassembly and replacement. The operation is convenient and fast.

[0044] In another embodiment, such as Figure 3 As shown, the cross-sectional shape of the fixed mounting groove 42 is convex, and the outer surface of the movable block 43 is in contact with the inner surface of the fixed mounting groove 42.

[0045] The movable locking block 43 can be stably inserted into the inner side of the fixed mounting groove 42, making operation convenient.

[0046] In another embodiment, such as Figure 3 As shown, the bottom of the connecting mounting frame 41 has a through hole that matches the first fastening bolt 45, and the interior of the movable locking block 43 has a thread that matches the first fastening bolt 45.

[0047] This allows the first fastening bolt 45 to be inserted into the interior of the connecting mounting frame 41, and during rotation, it can be rotatably connected and fixed with the movable locking block 43, making operation convenient.

[0048] In another embodiment, such as Figure 3 As shown, the connecting positioning mechanism 7 includes a connecting plug 71, a connecting positioning base block 72 is fixedly connected to the bottom end of the connecting plug 71, and a second fastening bolt 74 is threadedly connected between the connecting plug 71 and the bottom end of the rotating rod 1.

[0049] This facilitates the insertion of the connecting plug 71 into the inner side of the fixing slot 6, followed by the rotation of the second fastening bolt 74 into the inner side of the connecting plug 71 for connection and fixation. This allows for the connection and installation of the connecting plug 71 and the connecting positioning base block 72, making the operation convenient.

[0050] In another embodiment, such as Figure 3 As shown, arc-shaped grooves 73 are equidistantly provided on the outer surface of the connecting positioning base block 72.

[0051] When the connecting and positioning base block 72 rotates, it can rub and drill against the soil under the action of the arc groove 73, and can be stably inserted into the soil for connection and positioning, which is convenient to operate.

[0052] The working principle of this utility model is as follows: During use, when the whole unit rotates, the connecting positioning bottom block 72 can first contact the soil layer to position the whole unit. Then, when the whole unit rotates, it can dig into the soil layer. Under the action of the spiral guide strip 32, it connects and cooperates with the inner wall of the soil. At the same time, the rotary drilling machine can act on the whole unit, which can rotate downward in a spiral, so that the whole unit can move downward stably, thereby performing downward rotary drilling. The operation is convenient and quick. After the rotary drilling tooth body 44 is worn, the first fastening bolt 45 can be rotated and disassembled. Then, the rotary drilling tooth body 44 is moved laterally, which drives the movable locking block 43 to move, so that the movable locking block 43 can be pulled out from the inside of the connecting mounting frame 41. This allows for quick disassembly and replacement of the movable locking block 43 and the rotary drilling tooth body 44. The overall structure is simple and the operation is convenient and quick.

[0053] The above embodiments merely illustrate specific implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A rotary drilling bit for soil strata, characterized in that, include: The rotating rod (1) has a spiral blade (2) fixedly sleeved on its outer surface, and a fixed groove (5) and a fixed slot (6) are provided at its bottom; A spiral downward guide mechanism (3) is fixedly disposed at the top edge of the spiral blade (2); The rotary drilling tooth mechanism (4) is fixedly located at the bottom end of the spiral blade (2); A connecting positioning mechanism (7) is detachably located at the bottom end of the rotating rod (1).

2. The rotary drilling bit for soil strata according to claim 1, characterized in that: The spiral downward guide mechanism (3) includes a spiral frame (31) located at the top edge of the spiral blade (2), and a spiral guide strip (32) is fixedly connected to the middle of the outer side of the spiral frame (31).

3. A rotary drilling bit for soil strata according to claim 1, characterized in that: The rotary drilling tooth mechanism (4) includes a connecting mounting frame (41), the inside of which is provided with a fixed mounting groove (42), and a movable locking block (43) is movably connected to the inner side of the connecting mounting frame (41). The rotary drilling tooth body (44) is fixedly connected to the side of the movable locking block (43) away from the spiral blade (2), and a first fastening bolt (45) is provided between the rotary drilling tooth body (44) and the connecting mounting frame (41).

4. A rotary drilling bit for soil strata according to claim 3, characterized in that: The fixed mounting groove (42) has a convex cross-sectional shape, and the outer surface of the movable block (43) is in contact with the inner surface of the fixed mounting groove (42).

5. A rotary drilling bit for soil strata according to claim 3, characterized in that: The bottom of the connecting mounting frame (41) is provided with a through hole that is compatible with the first fastening bolt (45), and the interior of the movable locking block (43) is provided with a thread that is compatible with the first fastening bolt (45).

6. A rotary drilling bit for soil strata according to claim 1, characterized in that: The connection positioning mechanism (7) includes a connection plug (71), and a connection positioning base block (72) is fixedly connected to the bottom end of the connection plug (71). A second fastening bolt (74) is threadedly connected between the connection plug (71) and the bottom end of the rotating rod (1).

7. A rotary drilling bit for soil strata according to claim 6, characterized in that: The outer surface of the connecting positioning base block (72) is provided with arc-shaped grooves (73) at equal intervals.

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