Mounting structure of bidirectional rotary stirring drill rod

Abstract

The utility model discloses a mounting structure of a bidirectional rotary stirring drill rod. The mounting structure comprises a main shaft, a stirring drill rod and a cam locking assembly, a conical hole is formed in the lower end of the spindle, an open groove is formed in the lower surface of the spindle and penetrates through the outer cambered surface of the spindle, a rotating sleeve is rotationally connected to the lower end of the outer cambered surface of the spindle, two spiral grooves are formed in the lower end of the outer cambered surface of the rotating sleeve, and the lower ends of the two spiral grooves communicate with the lower surface of the rotating sleeve; a conical column movably inserted into the conical hole is arranged at the upper end of the stirring drill rod, two coaxially-arranged convex columns are arranged on the outer arc face of the conical column, the convex columns are movably inserted into the open grooves, the spiral grooves are slidably connected with the convex columns, the conical column is large in connection binding face, high in connection strength and good in coaxiality, locking is conducted through a cam, the structure is simple, and use is convenient. The mounting precision and the mounting convenience of the bidirectional rotary stirring drill rod are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to two -way rotation stirring drill rod technical field, concretely is a kind of installation structure of two -way rotation stirring drill rod. BACKGROUND

[0002] Two -way stirring drill rod is widely used in civil engineering and ground treatment, especially in soft soil ground reinforcement. It is suitable for treating silt, silt soil, flow plastic, soft plastic or plastic cohesive soil, plain fill, silt, sandy soil, gravel soil and other soil layers. Two -way stirring drill rod is usually composed of concentric inner and outer two layers of drill rod. Currently, two -way stirring drill rod is generally connected with the main shaft by the external rod body and has locking function. It is usually locked and fixed by thread structure or bolt. The internal drill rod is simply inserted. The structure is simple, the use cost is low, the connecting surface of the external rod body is generally cylindrical, and the gap connection between the drill rod and the connecting hole exists for easy insertion and connection. The installation precision is low, the thread structure is difficult to disassemble, and the stirring drill rod is not convenient to install. SUMMARY

[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide an installation structure of two -way rotation stirring drill rod. The taper column connection has large contact surface, high connection strength and good coaxiality. The cam locking structure is simple, convenient to use, improves the installation precision and convenience of two -way rotation stirring drill rod, and effectively solves the problems in the background art.

[0004] To achieve the above purpose, the utility model provides the following technical scheme: an installation structure of two -way rotation stirring drill rod, comprising a main shaft, a stirring drill rod and a cam locking assembly.

[0005] The main shaft: a tapered hole is formed in the lower end of the main shaft, an open slot is formed in the lower surface of the main shaft, the open slot penetrates the outer arc surface of the main shaft, a rotating sleeve is rotatably connected to the lower end of the outer arc surface of the main shaft, two spiral grooves are formed in the lower end of the outer arc surface of the rotating sleeve, and the lower ends of the two spiral grooves are in communication with the lower surface of the rotating sleeve.

[0006] The stirring drill rod: a tapered column is movably inserted into the tapered hole at the upper end of the stirring drill rod, two coaxially arranged protruding columns are arranged on the outer arc surface of the tapered column, the open slot is movably inserted into the protruding column, and the spiral groove is slidably connected to the protruding column.

[0007] The cam locking assembly: used for limiting the rotation of the rotating sleeve, the stirring drill rod is connected to the main shaft through the tapered column, and then the rotating sleeve is locked by the cam to control the up-down movement of the stirring drill rod. The structure is simple, convenient to use, the taper column connection has large contact surface, high connection strength and good coaxiality, and the installation precision and convenience of two -way rotation stirring drill rod are improved.

[0008] Further, the cam locking assembly comprises a vertical plate, an eccentric wheel and a handle, the vertical plate is symmetrically arranged at the through hole of the outer arc surface of the rotating sleeve, the eccentric wheel is rotationally connected between the two vertical plates, the eccentric wheel is arranged in cooperation with the main shaft, the outer arc surface of the eccentric wheel is provided with the handle, and the rotation of the rotating sleeve is limited.

[0009] Further, the cam locking assembly further comprises a spring sheet, the spring sheet is arranged on the outer arc surface of the rotating sleeve, and the spring sheet is arranged in cooperation with the handle to facilitate positioning of the handle.

[0010] Further, the cam locking assembly further comprises a steel ball, the steel ball is arranged at the lower end of the handle, and the locking force of the handle is improved.

[0011] Further, the outer arc surface of the rotating sleeve is provided with a torsion plate, the line connecting the center points of the torsion plate and the eccentric wheel intersects with the axis of the main shaft, and the stability during rotation of the main shaft is improved.

[0012] Further, the middle part of the outer arc surface of the main shaft is provided with a hand wheel, so that the rotation of the main shaft is facilitated.

[0013] Further, two long sliding holes are formed in the outer arc surface of the rotating sleeve, two sliding shafts are arranged at the lower end of the outer arc surface of the main shaft, the sliding shafts are slidingly connected with the vertically corresponding long sliding holes, and the up-down movement of the rotating sleeve is limited.

[0014] Compared with the prior art, the installation structure of the bidirectional rotating stirring drill rod has the following advantages:

[0015] The stirring drill rod and the main shaft are connected through a conical column, then the up-down movement of the stirring drill rod is controlled by the cam locking rotating sleeve, the structure is simple and convenient to use, the conical column connection fitting surface is large, the connection strength is high, the coaxiality is good, and the installation precision and the installation convenience of the bidirectional rotating stirring drill rod are improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a structural schematic view of the utility model;

[0017] Fig. 2 It is a sectional view structural schematic view of the cam locking assembly of the utility model;

[0018] Fig. 3 It is an enlarged structural schematic view of A of the utility model.

[0019] In the drawing: 1 main shaft, 2 conical hole, 3 stirring drill rod, 4 conical column, 5 convex column, 6 open slot, 7 rotating sleeve, 8 spiral groove, 9 cam locking assembly, 91 vertical plate, 92 eccentric wheel, 93 handle, 94 spring sheet, 95 steel ball, 10 long sliding hole, 11 sliding shaft, 12 hand wheel, 13 torsion plate. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0021] Please refer to Figs. 1-3 The embodiment provides a technical scheme: a mounting structure of a bidirectional rotary stirring drill rod, which comprises a main shaft 1, a stirring drill rod 3 and a cam locking assembly 9.

[0022] The main shaft 1 is provided with a conical hole 2 at the lower end, and the main shaft 1 is driven. An open slot 6 is formed in the lower surface of the main shaft 1 and penetrates the outer arc surface of the main shaft 1. A rotary sleeve 7 is rotatably connected to the lower end of the outer arc surface of the main shaft 1. Two helical grooves 8 are formed in the lower end of the outer arc surface of the rotary sleeve 7 and are in communication with the lower surface of the rotary sleeve 7. A hand wheel 12 is arranged in the middle of the outer arc surface of the main shaft 1. The outer arc surface of the hand wheel 12 is provided with uniformly distributed grooves, which facilitate the rotation control of the main shaft 1. Two long sliding holes 10 are formed in the outer arc surface of the rotary sleeve 7. Two sliding shafts 11 are arranged at the lower end of the outer arc surface of the main shaft 1 and are slidably connected with the vertically corresponding long sliding holes 10. The long sliding holes 10 and the sliding shafts 11 limit the vertical movement of the rotary sleeve 7.

[0023] The stirring drill rod 3 is provided with a conical column 4 movably inserted into the conical hole 2 at the upper end. The conical column 4 is inserted into the conical hole 2 by holding the stirring drill rod 3. Two protruding columns 5 are coaxially arranged on the outer arc surface of the conical column 4. The open slot 6 is movably inserted into the protruding column 5. The helical groove 8 is slidably connected with the protruding column 5. The protruding column 5 is inserted into the open slot 6 and then into the helical groove 8. The helical groove 8 of the rotary sleeve 7 is relatively slid with the protruding column 5 by rotating the rotary sleeve 7 clockwise. The helical groove 8 drives the conical column 4 to move upward through the protruding column 5. The outer conical surface of the conical column 4 is then attached to the inner wall of the conical hole 2.

[0024] The cam locking assembly 9 is used to limit the rotation of the rotating sleeve 7. The cam locking assembly 9 comprises a vertical plate 91, an eccentric wheel 92 and a handle 93. The vertical plate 91 is symmetrically arranged at the through hole of the outer arc surface of the rotating sleeve 7. The eccentric wheel 92 is rotatably connected between the two vertical plates 91. The vertical plate 91 provides a mounting position for the eccentric wheel 92. The eccentric wheel 92 is arranged in cooperation with the main shaft 1. The outer arc surface of the eccentric wheel 92 is provided with the handle 93. The cam locking assembly 9 further comprises a spring sheet 94. The spring sheet 94 is arranged on the outer arc surface of the rotating sleeve 7. The spring sheet 94 is arranged in cooperation with the handle 93. When the rotating sleeve 7 is held and the handle 93 is pressed at the same time, the handle 93 extrudes the spring sheet 94. The handle 93 drives the eccentric wheel 92 to rotate. The outer arc surface of the eccentric wheel 92 is separated from the outer arc surface of the main shaft 1. When the handle 93 is pulled upwards, the handle 93 drives the eccentric wheel 92 to rotate and extrude the outer arc surface of the main shaft 1. The rotating resistance of the rotating sleeve 7 is increased. The spring sheet 94 provides a thrust force to the handle 93 to maintain the locking state of the eccentric wheel 92. The cam locking assembly 9 further comprises a steel ball 95. The steel ball 95 is arranged at the lower end of the handle 93. During the rotation of the main shaft 1, the steel ball 95 rotates synchronously. The steel ball 95 generates a centrifugal force, which generates a pulling force to the handle 93. The handle 93 drives the eccentric wheel 92 and the handle 93 to rotate upwards. The locking force of the eccentric wheel 92 to the rotating sleeve 7 is increased. The outer arc surface of the rotating sleeve 7 is provided with a torsion plate 13. The line connecting the center point of the torsion plate 13 and the center point of the eccentric wheel 92 intersects with the axis of the main shaft 1. The torsion plate 13 facilitates the rotation of the rotating sleeve 7 and balances the mass distribution of the main shaft 1 in one rotation, thereby improving the stability of the main shaft 1 during rotation.

[0025] The working principle of the installation structure of the bidirectional rotary stirring drill rod is as follows: when installing, the stirring drill rod 3 is held to insert the conical column 4 into the conical hole 2, and at the same time, the convex column 5 is inserted into the open slot 6 and then into the helical groove 8, and at the same time, the core shaft in the stirring drill rod 3 is inserted into the central shaft in the upper end of the main shaft 1, then the rotary sleeve 7 is held and the handle 93 is pressed, the handle 93 extrudes the spring sheet 94, the handle 93 drives the eccentric wheel 92 to rotate, the outer arc surface of the eccentric wheel 92 is separated from the outer arc surface of the main shaft 1, then the rotary sleeve 7 is rotated clockwise, the helical groove 8 of the rotary sleeve 7 relatively slides with the convex column 5, the helical groove 8 drives the conical column 4 to move upwards through the convex column 5, and then the outer taper surface of the conical column 4 is attached to the inner wall of the conical hole 2, then the handle 93 is pulled upwards, the handle 93 drives the eccentric wheel 92 to rotate and extrude the outer arc surface of the main shaft 1, the rotating resistance of the rotary sleeve 7 is increased, and then the downward movement of the convex column 5 is limited, the installation of the stirring drill rod 3 is completed, the spring sheet 94 provides a thrust force to the handle 93 to keep the locking state of the eccentric wheel 92, when working, the main shaft 1 rotates, the main shaft 1 drives the conical column 4 and the stirring drill rod 3 to rotate through the open slot 6 and the convex column 5, the open slot 6 and the convex column 5 are transmissionally connected, the rotary sleeve 7 blocks the downward movement of the stirring drill rod 3 through the convex column 5, the downward movement of the stirring drill rod 3 can be guaranteed, and the stirring drill rod 3 will not fall off when the main shaft 1 drives the stirring drill rod 3 to rotate bidirectionally, at the same time, the main shaft 1 rotates, the steel ball 95 rotates synchronously, the steel ball 95 generates a centrifugal force, generates a pulling force to the handle 93, drives the eccentric wheel 92 and the handle 93 to rotate upwards, the locking force of the eccentric wheel 92 to the rotary sleeve 7 can be improved, the torsion plate 13 facilitates the rotation of the rotary sleeve 7, and at the same time, the mass distribution of the main shaft 1 in one rotation can be balanced, and the stability of the main shaft 1 when rotating can be improved.

[0026] The above only describes the embodiments of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process transformation using the contents of the utility model specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the utility model.

Claims

1. A mounting structure for a bidirectional rotary stirring drill pipe, characterized by: It comprises a main shaft (1), a stirring drill rod (3) and a cam locking assembly (9). The main shaft (1) is provided with a tapered hole (2) at its lower end, and an open slot (6) is formed in the lower surface of the main shaft (1) and penetrates the outer arc surface of the main shaft (1). A rotating sleeve (7) is rotatably connected to the lower end of the outer arc surface of the main shaft (1), and two helical grooves (8) are formed in the lower end of the outer arc surface of the rotating sleeve (7) and communicate with the lower surface of the rotating sleeve (7). The stirring drill rod (3) is provided with a tapered column (4) at its upper end, which is movably inserted into the tapered hole (2). Two protruding columns (5) are coaxially arranged on the outer arc surface of the tapered column (4), and the open slot (6) is movably inserted into the protruding columns (5). The helical grooves (8) are slidably connected to the protruding columns (5). The cam locking assembly (9) is used to limit the rotation of the rotating sleeve (7).

2. The installation structure for bidirectional rotation of a stirring drill pipe according to claim 1, characterized by: The cam locking assembly (9) comprises a vertical plate (91), an eccentric wheel (92) and a handle (93). The vertical plates (91) are symmetrically arranged in the through holes of the outer arc surface of the rotating sleeve (7), and the eccentric wheel (92) is rotatably connected between the two vertical plates (91). The eccentric wheel (92) is arranged in cooperation with the main shaft (1), and the handle (93) is arranged on the outer arc surface of the eccentric wheel (92).

3. The installation structure for bidirectionally rotating a stirring drill rod according to claim 2, characterized in that: The cam locking assembly (9) further comprises a spring sheet (94), which is arranged on the outer arc surface of the rotating sleeve (7) and cooperates with the handle (93).

4. The installation structure for bidirectionally rotating a stirring drill rod according to claim 2, characterized by: The cam locking assembly (9) further comprises a steel ball (95), which is arranged at the lower end of the handle (93).

5. The installation structure for bidirectionally rotating a stirring drill rod according to claim 2, characterized by: The outer arc surface of the rotating sleeve (7) is provided with a torsion plate (13), and the line connecting the center points of the torsion plate (13) and the eccentric wheel (92) intersects the axis of the main shaft (1).

6. The installation structure for bidirectionally rotating a stirring drill rod according to claim 1, characterized by: The outer arc surface of the main shaft (1) is provided with a hand wheel (12) at the middle part.

7. The installation structure for bidirectionally rotating a stirring drill rod according to claim 1, characterized by: The outer arc surface of the rotating sleeve (7) is provided with two long sliding holes (10), and the lower end of the outer arc surface of the main shaft (1) is provided with two sliding shafts (11), which are slidably connected to the corresponding vertical long sliding holes (10).

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