Rotary excavating drill cylinder righting and guiding structure

Abstract

The utility model relates to the technical field of drilling construction technology, in particular to a rotary excavating drill barrel centralizing and guiding structure which comprises a drill barrel, a drill rod is fixedly connected to the middle of the drill barrel, and a centralizing assembly is movably arranged on the outer side of the upper end of the drill rod in a sleeved mode. The righting assembly comprises a plurality of storage barrels, the multiple storage barrels are sequentially and movably arranged on the outer side of the driving barrel in a sleeving mode from inside to outside, guide sliding grooves are formed in the inner side walls of the storage barrels, and guide blocks matched with the guide sliding grooves are fixedly connected to the upper ends of the outer side walls of the storage barrels; the device has the beneficial effects that the driving cylinder is rotationally connected to the outer side of the drill rod, the righting assembly is arranged on the outer side of the upper end of the driving cylinder and comprises the multiple storage cylinders which are arranged in a sleeving mode, guide sliding grooves are formed in the surfaces of the storage cylinders, the righting assembly is in an inverted tower shape after being unfolded, and the multiple baffle rings are arranged at different positions of the outer side of the drill rod in a sleeving mode; the drill rod can be well centralized and guided, so that the stability of the drill rod is guaranteed, and the forming effect of a drill hole is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to borehole construction technical field, concretely is a rotary drilling cylinder righting guide structure. BACKGROUND

[0002] The borehole pile adopts mechanical hole forming and concrete pile forming, needs to select different drilling machines to form holes according to different terrains, and for large-diameter borehole pile construction under the medium weathered rock stratum, generally adopts medium-sized mechanical step drilling, and gradually enlarges the hole to the designed hole diameter.

[0003] In the prior art, the large-diameter borehole pile selects a drill rod to cooperate with a rotary drilling cylinder to drill, a righting guide device is arranged above the rotary drilling cylinder, the righting guide device is sleeved outside the drill rod, and is used for avoiding the inclination of the drill rod and reducing the shaking of the drill rod.

[0004] However, at present, with the increase of the drilling depth, the drill rod continuously moves downward, the spacing between the rotary drilling cylinder and the righting guide device increases, the guiding effect of the righting guide device on the drill rod gradually decreases, and the stability of the drill rod gradually deteriorates, thereby affecting the forming effect of the borehole. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a rotary drilling cylinder righting guide structure to solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a rotary drilling cylinder righting guide structure, the rotary drilling cylinder righting guide structure comprises:

[0007] A drill cylinder is fixedly connected with a drill rod in the middle, a righting assembly is movably sleeved outside the upper end of the drill rod, and a driving cylinder rotatingly sleeved outside the drill rod is arranged between the righting assembly and the drill cylinder.

[0008] The righting assembly comprises a plurality of receiving cylinders, the plurality of receiving cylinders are movably sleeved outside the driving cylinder from inside to outside in sequence, a guide sliding groove is formed in the inner side wall of the receiving cylinder, a guide block matched with the guide sliding groove is fixedly connected to the upper end of the outer side wall of the receiving cylinder, a retaining ring is fixedly connected to the upper end of the inner side wall of the receiving cylinder and movably sleeved outside the drill rod, a connecting block is fixedly connected to the upper end of the outer side wall of the driving cylinder and keeps sliding connection with the receiving cylinder with the smallest diameter through the connecting block.

[0009] Preferably, the guide sliding groove, the guide block and the connecting block are all provided with a plurality of and are arranged in a ring array around the drill rod.

[0010] Preferably, the outer side of the righting assembly is provided with a mounting ring, the inner side wall of the mounting ring is fixedly connected with an annular frame, the annular frame is fixedly connected with the outer side wall of the largest-diameter receiving cylinder, a plurality of weight-reducing grooves are arranged in an annular array on the surface of the annular frame, and the mounting ring is fixedly installed on the ground.

[0011] Preferably, the surface of the drill rod is provided with an annular groove, the lower end of the inner side wall of the drive cylinder is fixedly connected with an annular flange, and the annular flange is located in the inner cavity of the annular groove and is rotationally connected with the annular groove.

[0012] Preferably, the lower end surface of the drill rod is fixedly connected with a drill bit, the lower end of the outer side wall of the drill rod is fixedly connected with a connecting rod, and one end of the annular groove is fixedly connected with the inner wall of the drill cylinder.

[0013] Preferably, the cross section of the connecting rod is triangular, and the connecting rod is provided with a plurality of connecting rods and is arranged in a spiral manner on the surface of the drill rod.

[0014] Preferably, the lower end of the drill cylinder is provided with a plurality of annularly arranged notch grooves, the inside of the notch groove is fixedly connected with a connecting plate, the side surface of the connecting plate is rotationally installed with a crushing wheel, and the surface of the crushing wheel is provided with a gear groove.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] The utility model discloses a drive cylinder is rotationally connected on the outside of the drill rod, the upper end of the drive cylinder is provided with a righting assembly, the righting assembly includes a plurality of mutually sleeved receiving cylinders, the surface of the receiving cylinder is provided with a guide sliding groove, the upper end of the outer side wall of the receiving cylinder is fixedly connected with the guide block that is matched with the guide sliding groove, the inner wall of the upper end of the receiving cylinder is fixedly connected with a baffle ring, and the baffle ring is sleeved on the outside of the drill rod. ACCURACY

[0017] Figure 1 It is the whole structure stereogram of the utility model;

[0018] Figure 2 It is the drill cylinder structure stereogram of the utility model;

[0019] Figure 3 It is the mounting ring and righting assembly structure stereogram of the utility model;

[0020] Figure 4 It is the drill rod structure stereogram of the utility model;

[0021] Figure 5 The utility model discloses drive cylinder and storage cylinder structure separation schematic view;

[0022] Figure 6 The utility model discloses drive cylinder and storage cylinder structure section schematic view.

[0023] In the figure: 1, drill cylinder;11, notch groove;12, connecting plate;13, crushing wheel;2, drill rod;21, annular groove;22, connecting rod;23, drill bit;3, mounting ring;31, annular frame;32, weight-reducing groove;4, centralizing assembly;41, storage cylinder;42, guide sliding slot;43, guide block;44, baffle ring;5, drive cylinder;51, connecting block;52, annular flange. DETAILED DESCRIPTION

[0024] In order to make the utility model purposes, technical scheme carry out clearly, completely describe, and the advantage is more clear and clear, following combining the drawing to the utility model embodiment further detailed explanation.Should understand, the specific embodiment described here is the utility model a part of embodiment, instead of all the embodiment, just to explain the utility model embodiment, and is not used to limit the utility model embodiment, the person skilled in the art obtained all other embodiments under the premise of not making the creative labor, belong to the scope of the utility model protection.

[0025] Embodiment one, please refer to Figures 1-6 The utility model provides a kind of technical scheme: a rotary drilling drill cylinder centralizing guide structure, comprising: drill cylinder 1.

[0026] Specifically, drill rod 2 is fixedly connected in the middle of drill cylinder 1, the upper end outer side of drill rod 2 movably sheathed with centralizing assembly 4, and drive cylinder 5 that rotates and is sheathed on the outer side of drill rod 2 is arranged between centralizing assembly 4 and drill cylinder 1, drill rod 2 can rotate in the middle of centralizing assembly 4 and the middle of drive cylinder 5;

[0027] Further, centralizing assembly 4 includes multiple storage cylinders 41, multiple storage cylinders 41 are movably sheathed on the outer side of drive cylinder 5 from inside to outside, the inner diameter of multiple storage cylinders 41 gradually increases from inside to outside, adjacent two storage cylinders 41 keep mutual adhesion, guide sliding slot 42 is arranged on the inner side wall of storage cylinder 41, guide block 43 that is compatible with guide sliding slot 42 is fixedly connected on the outer side wall upper end of storage cylinder 41, adjacent two storage cylinders 41 only slide relative to each other, will not occur relative rotation, also will not occur mutual separation, baffle ring 44 is fixedly connected on the inner side wall upper end of storage cylinder 41, and baffle ring 44 is movably sheathed on the outer side of drill rod 2, as Figure 6As shown, the plurality of blocking rings 44 are all sleeved outside the drill rod 2, and when the centralizing assembly 4 is unfolded, the plurality of blocking rings 44 are respectively sleeved at different positions of the drill rod 2, which can play a good and stable guiding effect on the drill rod 2, and can avoid the drill rod 2 from tilting. In addition, the outer side wall of the driving cylinder 5 is fixedly connected with a connecting block 51, and the connecting block 51 is in sliding connection with the smallest diameter storage cylinder 41. That is to say, when the driving cylinder 5 slides downward, the driving cylinder 5 can pull the plurality of storage cylinders 41 to gradually move, so as to unfold the centralizing assembly 4. The unfolded centralizing assembly 4 has an inverted tower-shaped structure, and the unfolded centralizing assembly 4 has a larger height, which can adapt to the drill rod 2 continuously penetrating into the ground.

[0028] In order to improve the connection strength between the adjacent two storage cylinders 41, the guiding sliding grooves 42, the guiding blocks 43 and the connecting blocks 51 are all provided in plurality and arranged in annular array around the drill rod 2, which can improve the connection strength between the adjacent two storage cylinders 41.

[0029] In order to install the centralizing assembly 4, the application also has an installation ring 3 arranged outside the centralizing assembly 4. The inner side wall of the installation ring 3 is fixedly connected with an annular frame 31, and the annular frame 31 is fixedly connected with the outer side wall of the largest diameter storage cylinder 41. A plurality of weight-reducing grooves 32 are arranged on the surface of the annular frame 31 in annular array. The installation ring 3 is fixedly installed on the ground, and the installation ring 3 does not move by itself. After the centralizing assembly 4 is unfolded, the uppermost end of the centralizing assembly 4 is fixed with the installation ring 3, and the lowermost end of the centralizing assembly 4 is connected with the driving cylinder 5. The centralizing assembly 4 can play a centralizing effect on the drill rod 2.

[0030] In order to pull the centralizing assembly 4 to unfold, the application also has a ring-shaped groove 21 arranged on the surface of the drill rod 2. The inner side wall of the driving cylinder 5 is fixedly connected with a ring-shaped flange 52. The ring-shaped flange 52 is located in the inner cavity of the ring-shaped groove 21 and is rotatably connected with the ring-shaped groove 21. The ring-shaped groove 21 and the ring-shaped flange 52 cooperate with each other to ensure that the driving cylinder 5 can only rotate on the surface of the drill rod 2, and cannot relatively slide along the length direction of the drill rod 2. Therefore, during the process that the drill rod 2 penetrates into the ground, the driving cylinder 5 can move downward, thereby pulling the centralizing assembly 4 to unfold.

[0031] In order to fix the drill rod 2 with the drill cylinder 1, the application also has a drill bit 23 fixedly connected with the lower end surface of the drill rod 2, which can facilitate drilling a small hole on the ground. The outer side wall of the drill rod 2 is fixedly connected with a connecting rod 22. One end of the ring-shaped groove 21 is fixedly connected with the inner wall of the drill cylinder 1. The connecting rod 22 is arranged to fixedly connect the drill rod 2 with the drill cylinder 1.

[0032] In order to scrape the soil inside the drill cylinder 1, the cross section of the connecting rod 22 of the application is triangular, when the connecting rod 22 rotates with the drill rod 2, the connecting rod 22 can scrape the soil inside the drill cylinder 1, so as to facilitate the subsequent discharge of soil, the connecting rod 22 is provided with a plurality of and is distributed in a spiral shape on the surface of the drill rod 2, for reinforcing the connection strength between the drill cylinder 1 and the drill rod 2.

[0033] In order to form a drill hole, the application also has a plurality of annular array distribution notch grooves 11 at the lower end of the drill cylinder 1, the inside of the notch groove 11 is fixedly inserted with a connecting plate 12, the side surface of the connecting plate 12 is rotatably installed with a crushing wheel 13, the surface of the crushing wheel 13 is provided with a tooth groove, as shown in Figure 2 When the drill cylinder 1 rotates, the crushing wheel 13 first crushes the soil, then the notch groove 11 scrapes the soil, and finally the connecting rod 22 inside the drill cylinder 1 scrapes the soil inside the drill cylinder 1, thereby forming a drill hole.

[0034] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A rotary excavating drill string centralizing guide structure, characterized by: The rotary drilling cylinder righting guide structure comprises: A drill cylinder (1) is provided with a drill rod (2) fixedly connected in the middle, an outer side of an upper end of the drill rod (2) movably sleeved with a righting assembly (4), and a driving cylinder (5) rotatably sleeved outside the drill rod (2) arranged between the righting assembly (4) and the drill cylinder (1). The righting assembly (4) comprises a plurality of receiving cylinders (41) movably sleeved outside the driving cylinder (5) from inside to outside, an inner side wall of the receiving cylinder (41) is provided with a guide sliding groove (42), an outer side wall of the receiving cylinder (41) is fixedly connected with a guide block (43) matched with the guide sliding groove (42) at an upper end, an inner side wall of the receiving cylinder (41) is fixedly connected with a blocking ring (44) movably sleeved outside the drill rod (2), and an outer side wall of the driving cylinder (5) is fixedly connected with a connecting block (51) slidably connected with the receiving cylinder (41) with the smallest diameter through the connecting block (51).

2. The centralizer structure of claim 1, wherein: The guide sliding groove (42), the guide block (43) and the connecting block (51) are arranged in multiple numbers and annularly arrayed around the drill rod (2).

3. The centralizer of claim 2, wherein: An installation ring (3) is arranged outside the righting assembly (4), an inner side wall of the installation ring (3) is fixedly connected with an annular frame (31) fixedly connected with an outer side wall of the receiving cylinder (41) with the largest diameter, a surface of the annular frame (31) is provided with a plurality of weight-reducing grooves (32) annularly arrayed, and the installation ring (3) is fixedly installed on the ground.

4. The centralizer of claim 1, wherein: A surface of the drill rod (2) is provided with an annular groove (21), an inner side wall of the driving cylinder (5) is fixedly connected with an annular flange (52) located in an inner cavity of the annular groove (21) and rotatably connected therewith.

5. The centralizer of claim 1, wherein: A lower end surface of the drill rod (2) is fixedly connected with a drill bit (23), an outer side wall of the drill rod (2) is fixedly connected with a connecting rod (22), and one end of the annular groove (21) is fixedly connected with an inner wall of the drill cylinder (1).

6. The centralizer of claim 5, wherein: A cross section of the connecting rod (22) is triangular, the connecting rod (22) is arranged in multiple numbers and helically distributed on the surface of the drill rod (2).

7. The centralizer of claim 1, wherein: A lower end of the drill cylinder (1) is provided with a plurality of annularly arrayed notched grooves (11), the notched grooves (11) are fixedly inserted with connecting plates (12), a side surface of the connecting plate (12) is rotatably installed with a crushing wheel (13), and a surface of the crushing wheel (13) is provided with a tooth groove.

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