Square Pile Round Drill Hole Positioner

Abstract

The present invention discloses a technology field of square pile round drill, specifically a hole positioning device for square pile round drill, which includes a power input connecting square head shaft. A round drill bit is fixedly arranged on the lower side wall of the power input connecting square head shaft. An attached wall cylinder is sleeved outside the power input connecting square head shaft. An X-axis protective arm is horizontally arranged at the upper end of the front side wall of the attached wall cylinder. The rear end of the X-axis protective arm is rotatably connected to the front side wall of the attached wall cylinder. Symmetrical Y-axis protective arms are horizontally arranged at both ends of the X-axis protective arm. One end of each of the two Y-axis protective arms is rotatably connected to the side wall of the attached wall cylinder, which is convenient for effectively positioning the square pile round drill during the drilling process of the square pile round drill, thereby preventing the position from moving during the drilling process and affecting the drilling accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of square pile round drills, specifically a hole-forming positioner for square pile round drills. Background Technique

[0002] During the process of tunnel construction, it is often necessary to use square pile round drills for tunnel excavation. However, at present, when the square pile round drills are used for tunnel excavation, there is a lack of a drill bit positioning device. Since there are gaps in the telescopic arms of the round drill bits and the depth of the deep holes is very deep (usually more than 30 meters), and the cutting force of the round drill bits during operation is uneven, the drill bits tend to shift towards the direction of the first deep round hole. This results in the bottom of the deep hole not being a standard round flat bottom. Moreover, the deeper the deep hole, the more complex the operating conditions of the round drill bits, the more unbalanced the cutting force, and the greater the amount of deviation, thus affecting the accuracy of tunnel excavation. Summary of the Invention

[0003] The purpose of the present invention is to provide a hole-forming positioner for square pile round drills, so as to solve the problem that the existing square pile drill bits tend to shift in the direction of excavating deep round holes due to the uneven cutting force of the round drill bits during tunnel excavation, resulting in insufficient precision of construction as mentioned in the above background technique.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A hole-forming positioner for square pile round drills, including a power input connecting square head shaft. A round drill bit is fixedly arranged on the lower side wall of the power input connecting square head shaft. An attached wall cylinder is sleeved outside the power input connecting square head shaft. An X-axis protective arm is horizontally arranged at the upper end of the front side wall of the attached wall cylinder. The rear end of the X-axis protective arm is rotatably connected to the front side wall of the attached wall cylinder. Symmetric Y-axis protective arms are horizontally arranged at both ends of the X-axis protective arm. One end of each of the two Y-axis protective arms is rotatably connected to the side wall of the attached wall cylinder. The attached wall cylinder includes a mounting pipe, support arm hinge holes, and protective arm hinge holes. The support arm hinge holes are uniformly fixedly arranged around the mounting pipe. The protective arm hinge holes are fixedly arranged at the lower end of the support arm hinge holes.

[0005] Preferably, the X-axis protective arm and the two Y-axis protective arms each include a protective arm shaft. A protective wheel shaft sleeve is fixedly arranged at the right end of the protective arm shaft. A protective wheel is rotatably arranged inside the protective wheel shaft sleeve. The left end of the protective wheel shaft sleeve is rotatably connected to the right end of the protective arm shaft through a guiding shaft. Symmetric support arm hinges are fixedly arranged on the upper side wall of the protective arm shaft. A compression spring baffle is fixedly arranged at the right end of the outer wall of the protective arm shaft. A compression spring is sleeved outside the protective arm shaft. The left end of the compression spring is fixedly connected to the side wall of the compression spring baffle. The right end of the compression spring is fixedly connected to the left side wall of the protective wheel shaft sleeve.

[0006] Preferably, an X-axis support arm is horizontally arranged at the upper end of the X-axis protective arm. One end of the X-axis support arm is hingedly connected to the support arm, and the other end of the X-axis support arm is rotatably connected to the side wall of the wall-attached cylinder. Y-axis support arms are horizontally arranged at the upper ends of both Y-axis protective arms. One end of each of the two Y-axis support arms is hingedly connected to the support arm, and the other end of each of the two Y-axis support arms is rotatably connected to the side wall of the wall-attached cylinder.

[0007] Preferably, the power input connecting square head shaft includes an excavator square head connecting part, a wall-attached cylinder hole-shaft matching part, and a round drill bit connecting square head. The upper side wall of the wall-attached cylinder hole-shaft matching part is fixedly connected to the lower side wall of the excavator square head connecting part, and the upper side wall of the round drill bit connecting square head is fixedly connected to the lower side wall of the wall-attached cylinder hole-shaft matching part.

[0008] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0009] Through the combined cooperation of the X-axis protective arm, Y-axis protective arm, protective arm shaft, protective wheel shaft sleeve, protective wheel, guide shaft, support arm hinge, compression spring stop rod, compression spring, X support arm, and Y support arm, it is convenient to effectively position the square pile round drill during drilling, thereby preventing position movement during the drilling process and affecting the drilling accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0011] Figure 2 is Figure 1 the front view cross-sectional structure diagram of;

[0012] Figure 3 is Figure 1 the side view cross-sectional structure diagram of;

[0013] Figure 4 is Figure 1 the structure diagram of the middle protective arm in;

[0014] Figure 5 is Figure 1 the structure diagram of the power input connecting square head shaft in;

[0015] Figure 6 is Figure 1 the structure diagram of the wall-attached cylinder in;

[0016] Figure 7 is the structure diagram of the protective arm shaft;

[0017] Figure 8 is the structure diagram of the protective wheel;

[0018] Figure 9For operation illustration Figure 1 ;

[0019] Figure 10 For operation illustration Figure 2 。

[0020] In the figure: 1 power input connecting square head shaft, 2 round drill bit, 3 attached wall cylinder, 4 X-axis protective arm, 5 Y-axis protective arm, 6 protective arm shaft, 7 protective wheel bushing, 8 protective wheel, 9 guiding shaft, 10 support arm hinge, 11 compression spring baffle, 12 compression spring, 13 X support arm, 14 Y support arm, 15 excavator square head connecting part, 16 attached wall cylinder hole shaft matching part, 17 round drill bit connecting square head, 18 mounting pipe, 19 support arm hinge hole, 20 protective arm hinge hole. Specific implementation mode

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative work shall fall within the protection scope of the present invention.

[0022] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and 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 should not be construed as a limitation of the present invention. Embodiment

[0023] Please refer to Figure 1-10 , the present invention provides a technical solution: a square pile round drill hole positioner, including a power input connecting square head shaft 1, a round drill bit 2 is fixedly arranged on the lower side wall of the power input connecting square head shaft 1, an attached wall cylinder 3 is sleeved outside the power input connecting square head shaft 1, an X-axis protective arm 4 is horizontally arranged at the upper end of the front side wall of the attached wall cylinder 3, the rear end of the X-axis protective arm 4 is rotatably connected to the front side wall of the attached wall cylinder 3, and symmetrical Y-axis protective arms 5 are horizontally arranged at both ends of the X-axis protective arm 4, and one end of each of the two Y-axis protective arms 5 is rotatably connected to the side wall of the attached wall cylinder 3; the attached wall cylinder 3 includes a mounting pipe 18, a support arm hinge hole 19 and a protective arm hinge hole 20, the support arm hinge holes 19 are uniformly and fixedly arranged around the mounting pipe 18, and the protective arm hinge hole 20 is fixedly arranged at the lower end of the support arm hinge hole 19.

[0024] The X-axis protective arm 4 and the two Y-axis protective arms 5 both include a protective arm shaft 6. A protective wheel shaft sleeve 7 is fixedly arranged at the right end of the protective arm shaft 6. A protective wheel 8 is rotatably arranged inside the protective wheel shaft sleeve 7. The left end of the protective wheel shaft sleeve 7 is rotatably connected to the right end of the protective arm shaft 6 through a guide shaft 9. Symmetric support arm hinges 10 are fixedly arranged on the upper side wall of the protective arm shaft 6. A compression spring baffle 11 is fixedly arranged at the right end of the outer wall of the protective arm shaft 6. A compression spring 12 is sleeved outside the protective arm shaft 6. The left end of the compression spring 12 is fixedly connected to the side wall of the compression spring baffle 11. The right end of the compression spring 12 is fixedly connected to the left side wall of the protective wheel shaft sleeve 7.

[0025] A horizontally arranged X-axis support arm 13 is provided at the upper end of the X-axis protective arm 4. One end of the X-axis support arm 13 is rotatably connected to the support arm hinge 10. The other end of the X-axis support arm 13 is rotatably connected to the side wall of the wall-attached cylinder 3. Horizontally arranged Y-axis support arms 14 are provided at the upper ends of the two Y-axis protective arms 5. One ends of the two Y-axis support arms 14 are rotatably connected to the support arm hinge 10. The other ends of the two Y-axis support arms 14 are rotatably connected to the side wall of the wall-attached cylinder 3.

[0026] The power input connecting square head shaft 1 includes an excavator square head connecting part 15, a wall-attached cylinder hole shaft matching part 16, and a round drill bit connecting square head 17. The upper side wall of the wall-attached cylinder hole shaft matching part 16 is fixedly connected to the lower side wall of the excavator square head connecting part 15. The upper side wall of the round drill bit connecting square head 17 is fixedly connected to the lower side wall of the wall-attached cylinder hole shaft matching part 16.

[0027] Working principle: The square pile round drill hole positioner mainly consists of a power input connecting square head shaft 1, an attached wall cylinder 4, an X support arm 13, a Y support arm 14, a protective arm shaft 6, a compression spring 12, a protective wheel shaft sleeve 7, and a protective wheel 8. The respective installation dimensions of the four protective arm hinge holes 20 and the support arm hinge holes 19 are the same and each has interchangeability. The upper square head part of the power input connecting square head shaft 1 is connected to the square head of the rotary drilling rig, which plays the role of supporting the entire positioner and providing power. The lower square head part is connected to the round drill bit, so that the round drill bit has the power of rotational motion for excavation. Its parts are combined welded parts. The attached wall cylinder 3 is provided with protective arms in the X direction and the Y direction, and the middle part of the attached wall cylinder 3 and the power input connecting square head shaft 1 is connected by a hole-shaft fit. In this way, when the round drill bit rotates driven by the power input connecting square head shaft 1, the attached wall cylinder 3 can be kept different due to the support of the protective arms, and together with parts such as the round drill bit, it forms a unified whole and can thus realize the overall up and down movement. The protective arm consists of a protective arm shaft 6, a compression spring baffle 11, a compression spring 12, a guide shaft 9, a protective wheel shaft sleeve 7, and a protective wheel 8. The protective arm shaft 6 is of modular design. The X-axis protective arm and the Y-axis protective arm have the same structure, only the difference in the length of the protective arm shaft. Therefore, the length of the protective arm shaft can be adjusted according to the different diameters of the round drill bits used to achieve the diversity of the use dimensions of the positioner and increase the adaptation range. The end of the protective arm is provided with a protective wheel, which can help the smooth up and down movement of the whole positioner. The protective wheel 8 and the protective wheel shaft sleeve 7 are combined into a whole. The guide shaft 9 is installed on the protective wheel shaft sleeve 7. A waist-shaped long hole is opened on the protective arm shaft 6, so that the protective wheel 8 can slide along the axis direction of the protective arm shaft 6. Thus, it can be known that the supporting force of the positioner can be adjusted by the compression spring on the protective arm, and when the whole positioner moves up and down, it can also move under the flexible action of the spring so that the positioner will not be stuck in the deep hole and cannot move;

[0028] During the construction process of the square deep hole, here we take a 2 m × 3 m square deep hole as an example (common deep hole size). Its common construction process is to first use a round hole drill with a diameter of 2 m to drill 2 circular deep holes with a diameter of 2 m tangentially along the length direction in turn, and then use a special square pile drill bit for trimming operations to make it a standard square. During the construction process, when we drill the first deep hole with a diameter of 2 m, since there is solid soil and rock attached to the periphery of the round drill bit, generally the drill bit will not shift. However, when we drill the second circular hole with a diameter of 2 m, because there is no soil and rock attached to the right side of the second circular hole position due to the drilling of the first circular hole, when the round drill bit drills downward, due to the gap in the telescopic arm of the round drill bit and the very deep depth of the deep hole (usually more than 30 m), and the unbalanced cutting force during the operation of the round drill bit, the drill bit will shift towards the first deep circular hole, resulting in the bottom of the deep hole not being a standard circular flat bottom. Moreover, the deeper the deep hole, the more complex the working conditions of the round drill bit, the more unbalanced the cutting force, and the greater the amount of shift.

[0029] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For a person skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes that fall within the meaning and scope of the equivalent elements of the claims in the present invention, and any reference signs in the claims should not be regarded as limiting the claims involved.

[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Square pile round drill hole positioner, including a power input connecting square head shaft (1), characterized in that, A round drill bit (2) is fixedly arranged on the lower side wall of the power input connecting square head shaft (1). An attached wall cylinder (3) is sleeved outside the power input connecting square head shaft (1). The upper end of the front side wall of the attached wall cylinder (3) is horizontally provided with an X-axis protective arm (4). The rear end of the X-axis protective arm (4) is rotatably connected to the front side wall of the attached wall cylinder (3). Symmetrical Y-axis protective arms (5) are horizontally arranged at both ends of the X-axis protective arm (4). One end of each of the two Y-axis protective arms (5) is rotatably connected to the side wall of the attached wall cylinder (3). The X-axis protective arm (4) and the two Y-axis protective arms (5) both include a protective arm shaft (6). A protective wheel shaft sleeve (7) is fixedly arranged at the right end of the protective arm shaft (6). A protective wheel (8) is rotatably arranged inside the protective wheel shaft sleeve (7). The left end of the protective wheel shaft sleeve (7) is rotatably connected to the right end of the protective arm shaft (6) through a guide shaft (9). Symmetrical support arm hinges (10) are fixedly arranged on the upper side wall of the protective arm shaft (6). A compression spring baffle (11) is fixedly arranged at the right end of the outer wall of the protective arm shaft (6). A compression spring (12) is sleeved outside the protective arm shaft (6). The left end of the compression spring (12) is fixedly connected to the side wall of the compression spring baffle (11). The right end of the compression spring (12) is fixedly connected to the left side wall of the protective wheel shaft sleeve (7). An X-axis support arm (13) is horizontally arranged at the upper end of the X-axis protective arm (4). One end of the X-axis support arm (13) is rotatably connected to the support arm hinge (10). The other end of the X-axis support arm (13) is rotatably connected to the side wall of the attached wall cylinder (3). Y-axis support arms (14) are horizontally arranged at the upper ends of the two Y-axis protective arms (5). One end of each of the two Y-axis support arms (14) is rotatably connected to the support arm hinge (10). The other end of each of the two Y-axis support arms (14) is rotatably connected to the side wall of the attached wall cylinder (3). The attached wall cylinder (3) includes an installation pipe (18), support arm hinge holes (19) and protective arm hinge holes (20). The support arm hinge holes (19) are evenly and fixedly arranged around the installation pipe (18). The protective arm hinge holes (20) are fixedly arranged at the lower ends of the support arm hinge holes (19).

2. The square pile round drill hole positioner according to claim 1, characterized in that: The power input connecting square head shaft (1) includes an excavator square head connecting part (15), an attached wall cylinder hole-shaft matching part (16) and a round drill bit connecting square head (17). The upper side wall of the attached wall cylinder hole-shaft matching part (16) is fixedly connected to the lower side wall of the excavator square head connecting part (15). The upper side wall of the round drill bit connecting square head (17) is fixedly connected to the lower side wall of the attached wall cylinder hole-shaft matching part (16).

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