High-strength rotary excavating device for pile foundation construction

Abstract

The high-strength rotary excavating device comprises a rotary excavating mechanism, a rotary excavating driver, a drill rod, an elevator connecting piece, a hydraulic hammer and a spring, the hydraulic hammer is installed at one end of the drill rod, the spring is sleeved on the periphery of the hydraulic hammer, one end of the spring is connected with the periphery of the bottom end of the drill rod, and the other end of the spring is connected with the elevator connecting piece. The rotary excavating mechanism comprises a rotary excavating barrel cover, a ring cover, excavating and drilling tools and automatic push-pull separating and combining devices, the automatic push-pull separating and combining devices are connected to the two sides between the ring cover and a barrel opening of the rotary excavating barrel cover, and the multiple excavating and drilling tools are annularly distributed and installed around a ring hole in the outer end of the ring cover. The rotary excavating mechanism is reasonable in structural design and high in operation efficiency, the multiple excavating and drilling tools are annularly distributed in the rotary excavating mechanism in the clockwise direction, under the driving impact of the hydraulic hammer on the multiple excavating and drilling tools, the construction effect of efficient breaking, impacting and rotary excavating is achieved, the rotary excavating construction period is shortened, and the construction cost of mechanical equipment is reduced.

Description

Technical Field

[0001] The utility model relates to the field of rotary drilling construction of pile foundations, and particularly to a high-strength rotary drilling device for pile foundation construction. Background Technique

[0002] A rotary drilling rig is a construction machine suitable for hole-forming operations in building foundation projects. It is mainly suitable for construction in soil layers such as sandy soil, cohesive soil, and silty soil, and is widely used in various foundation construction such as cast-in-place piles, diaphragm walls, and foundation reinforcement. However, the existing rotary drilling devices have low breaking and rotating strength and low operation efficiency, which affect the overall construction period. At the same time, the change of rotary drilling strength highly depends on high-energy-consuming and high-power. Therefore, in view of the above problems, a high-strength rotary drilling device for pile foundation construction is proposed. Content of the Utility Model

[0003] The purpose of the utility model is to provide a high-strength rotary drilling device for pile foundation construction in order to solve the above problems.

[0004] The utility model realizes the above purpose through the following technical solutions. A high-strength rotary drilling device for pile foundation construction includes a rotary drilling mechanism, a rotary drilling driver, a drill pipe, a hoisting connector, a hydraulic hammer, and a spring. The hydraulic hammer is installed at one end of the drill pipe, and a spring is sleeved around the hydraulic hammer. One end of the spring is connected to the periphery of the bottom end of the drill pipe.

[0005] The rotary drilling mechanism includes a rotary drilling cylinder cover, an annular cover, drilling tools, and an automatic push-pull separator. Automatic push-pull separators are connected to both sides between the annular cover and the mouth of the rotary drilling cylinder cover. A plurality of drilling tools are annularly distributed and installed around the outer ring hole of the annular cover.

[0006] Preferably, a rotary drilling driver is configured on the drill pipe.

[0007] Preferably, a hoisting connector is installed at the top end of the drill pipe.

[0008] Preferably, the outer end of the drilling tool extends beyond the central ring hole of the annular cover.

[0009] Preferably, the hoisting connector is connected to the wire rope end of the external main winch.

[0010] Preferably, the other end of the spring is connected to the corresponding structure on the rotary drilling mechanism.

[0011] Compared with the prior art, the advantages of the utility model are as follows: high operation efficiency. The multiple drilling tools distributed in a clockwise annular shape in the rotary drilling mechanism, under the driving and impact of the hydraulic hammer on the multiple drilling tools, have the construction effect of efficient breaking and rotary drilling, which helps to shorten the rotary drilling construction period and reduce the construction cost of mechanical equipment. Description of the Drawings

[0012] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the attached drawings required for the description of the embodiments or the prior art. Obviously, the attached drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other attached drawings can also be obtained based on these drawings.

[0013] Figure 1 Schematic diagram of the overall structure of the present invention;

[0014] Figure 2 Schematic diagram of the rotary drilling mechanism structure of the present invention.

[0015] In the figure: 1, rotary drilling mechanism; 11, rotary drilling cylinder cover; 12, ring cover; 13, drilling tool; 14, automatic push-pull separator; 2, rotary drilling driver; 3, drill pipe; 4, hoisting connector; 5, hydraulic hammer; 6, spring. Specific embodiments

[0016] In order to make the objectives, features, and advantages of the present invention more obvious and understandable, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the attached drawings in the embodiments of the present invention. Obviously, the embodiments described below are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0017] The following will further illustrate the technical solutions of the present invention in conjunction with the attached drawings and through specific embodiments.

[0018] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the attached drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0019] Please refer to Figure 1-2 As shown, a high-strength rotary drilling device for pile foundation construction includes a rotary drilling mechanism 1, a rotary drilling driver 2, a drill pipe 3, a hoisting connector 4, a hydraulic hammer 5, and a spring 6. The hydraulic hammer 5 is installed at one end of the drill pipe 3, and a spring 6 is sleeved around the hydraulic hammer 5. One end of the spring 6 is connected to the periphery of the bottom end of the drill pipe 3;

[0020] The rotary drilling mechanism 1 includes a rotary drilling cylinder cover 11, a ring cover 12, drilling cutters 13, and an automatic push-pull clutch 14. The automatic push-pull clutches 14 are connected to both sides between the ring cover 12 and the mouth of the rotary drilling cylinder cover 11. A plurality of drilling cutters 13 are annularly distributed and installed around the outer ring holes of the ring cover 12.

[0021] A rotary drilling driver 2 is arranged on the drill pipe 3; a hoisting connector 4 is installed at the top end of the drill pipe 3; the outer ends of the drilling cutters 13 extend beyond the ring holes in the middle of the ring cover 12.

[0022] The hoisting connector 4 is connected to the wire rope end of an external main hoist; the other end of the spring 6 is connected to the corresponding structure on the rotary drilling mechanism 1.

[0023] Working principle: The externally connected power head pulling oil cylinder moves the rotary drilling driver 2 on the drill pipe 3. After moving and positioning, the rotary drilling driver 2 drives the drill pipe 3 to rotate, so that the rotary drilling mechanism 1 and the hydraulic hammer 5 are in the rotary drilling state. A plurality of drilling cutters 13 distributed in a clockwise annular shape in the rotary drilling mechanism 1, under the driving and impact of the hydraulic hammer 5 on the plurality of drilling cutters 13, have the construction effect of efficient impact rotary drilling;

[0024] The beneficial effects of the present invention are as follows: The operation efficiency is high. A plurality of drilling cutters distributed in a clockwise annular shape in the rotary drilling mechanism, under the driving and impact of the hydraulic hammer on the plurality of drilling cutters, have the construction effect of efficient impact rotary drilling, which helps to shorten the construction period of rotary drilling and reduce the construction cost of mechanical equipment.

[0025] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the same elements of the claims in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0026] As described above, the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A high-strength rotary drilling device for pile foundation construction, characterized in that: The invention comprises a rotary drilling mechanism (1), a rotary drilling driver (2), a drill rod (3), a lifting device connecting piece (4), a hydraulic hammer (5) and a spring (6), wherein the hydraulic hammer (5) is installed at one end of the drill rod (3), and a spring (6) is sleeved around the hydraulic hammer (5), and one end of the spring (6) is connected to the bottom end of the drill rod (3); The rotary drilling mechanism (1) comprises a rotary drilling barrel cover (11), a ring cover (12), a drilling tool (13) and an automatic push-pull separator (14); the automatic push-pull separator (14) is connected to both sides between the ring cover (12) and the barrel opening of the rotary drilling barrel cover (11); and a plurality of drilling tools (13) are installed in an annular distribution around the annular hole at the outer end of the ring cover (12).

2. A high-strength rotary drilling device for pile foundation construction according to claim 1, characterized in that: The drill rod (3) is provided with a rotary drilling driver (2).

3. The high-strength rotary drilling device for pile foundation construction according to claim 1, characterized in that: A lifter connector (4) is installed at the top end of the drill rod (3).

4. The high-strength rotary drilling device for pile foundation construction according to claim 1, characterized in that: The outer end of the drilling tool (13) exceeds the annular hole in the middle of the ring cover (12).

5. The high-strength rotary drilling device for pile foundation construction according to claim 1, characterized in that: The lifting device connecting piece (4) is connected to the end of the steel wire rope of the external main hoist.

6. The high-strength rotary drilling device for pile foundation construction according to claim 1, characterized in that: The other end of the spring (6) is connected to a corresponding structure on the rotary drilling mechanism (1).

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