Fixed guide device for controlling hole inclination of high-pressure jet grouting guide hole

Abstract

The utility model relates to the field of high-pressure jet grouting diaphragm wall construction, in particular to a fixed guide device for controlling the hole inclination of a high-pressure jet grouting guide hole, which comprises two guide devices arranged in mirror symmetry and a telescopic moving device arranged between the two guide devices, comprising a limiting sleeve rotationally matched on a drill rod body, supporting circular plates are fixedly connected to the upper end and the lower end of the limiting sleeve, at least three hinge frames are arranged on the outer side wall of the limiting sleeve in an equal circumference mode, and a connecting rod set is hinged to each hinge frame; each connecting rod set and the lifting adjusting mechanism are hinged to a pulling connecting rod, and the connecting rod sets are fixedly connected with arc-shaped supporting plates. When an over-deep hole is drilled, due to the fact that the drill rod is too long and the swing amplitude is too large during rotation, the hole guide hole is prevented from inclining.

Description

Technical Field

[0001] The utility model relates to the field of high-pressure jet grouting anti-seepage wall construction, in particular to a fixed guide device for controlling the inclination of a high-pressure jet grouting guide hole. Background Art

[0002] High-pressure jet grouting technology refers to a construction technology that uses the impact force of high-pressure jets to destroy the soil to be grouted, so that the slurry is mixed with soil particles and condensed, thereby forming an anti-seepage board wall. When using this technology to carry out anti-seepage reinforcement of dam projects, holes should be drilled at the predetermined locations of the design, and then high-pressure grouting pipes should be placed, and connected to high-pressure water pumps (three-pipe method), air compressors and cement mixers through pipes. During operation, according to the requirements, the slurry is poured while the high-pressure grouting pipe is lifted to achieve the mixing of cement slurry and soil particles to form a condensate, which is carried out continuously hole by hole, and finally connected into a board wall curtain to achieve the purpose of anti-seepage reinforcement.

[0003] When drilling, there are many factors that affect the inclination of the borehole, such as the skill level of the operator, the stability of the drilling rig in position and the verticality of the drill rod, the bending, defects, rigidity of the drill rod, geological conditions, etc. When drilling deep holes below 20m, the high-speed rotation of the drill rod itself will produce centrifugal swing, which will have a certain impact on the verticality of the drill bit at the bottom of the hole. This impact increases with the increase of hole depth, causing the single-hole guide hole to be inclined and not meet the design requirements. Repairing the hole is not only difficult but also time-consuming. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a fixed guide device for controlling the inclination of a high-pressure jet grouting hole to solve the above-mentioned problem.

[0005] Based on the above purpose, the utility model provides a fixed guide device for controlling the inclination of a hole in a high-pressure jet grouting process, comprising two guide devices arranged in mirror symmetry and a telescopic moving device arranged between the two guide devices, including:

[0006] The guide device comprises a limiting sleeve rotatably engaged with the drill rod body, the upper and lower ends of the limiting sleeve are fixedly connected with supporting circular plates, and the outer wall of the limiting sleeve is provided with at least three hinged frames of equal circumference, each of the hinged frames is hinged with a connecting rod group, each of the connecting rod group and the lifting and adjusting mechanism is hinged with a pulling connecting rod, and the connecting rod group is fixedly connected with an arc support plate;

[0007] By means of asynchronous expansion of the two guide devices and cooperation with the telescopic moving device, up and down movement in the borehole can be achieved, so that the position relative to the drill rod body can be adjusted in real time to complete the guidance of the drill rod body.

[0008] As an optional embodiment, the connecting rod group includes a first connecting rod hinged at the bottom of the upper end of the articulated frame and a second connecting rod hinged at the lower end of the articulated frame, and the ends of the first connecting rod and the second connecting rod are hinged with mounting brackets, and the mounting brackets are fixedly connected to the arc support plate.

[0009] As an optional embodiment, the lifting and adjusting mechanism includes telescopic cylinders which are equicircumferentially arranged on the top of the supporting circular plate at the upper end, and the telescopic ends of the three telescopic cylinders are provided with a second supporting circular plate. One end of each pulling link is hinged to the corresponding first link, and the other end is hinged to the second supporting circular plate.

[0010] As an optional implementation, grooves corresponding to the movable range of the connecting rod assembly are distributed on the supporting circular plate.

[0011] As an optional implementation, a plurality of protrusions are provided on the arc-shaped support plate.

[0012] As an optional embodiment, the telescopic moving device includes three multi-stage telescopic cylinders equicircumferentially connected between two of the guide devices and a guide light axis fixedly connected to the guide device located at the bottom, and the guide light axis is slidably connected to the guide device at the upper end.

[0013] The beneficial effects of the utility model are as follows: when the utility model is drilling a deep hole below 20m, the high-speed rotation of the drill rod itself will produce centrifugal swing, which will have a certain impact on the verticality of the drill tool at the bottom of the hole. This impact increases with the increase of the hole depth, causing the single-hole lead hole to be skewed. By changing the lifting and adjusting mechanism, the guide device is fixed on the borehole, thereby stabilizing the drill rod shaft, the upper guide device is first fixed on the borehole, the lower guide device is contracted and does not contact the borehole, then the telescopic moving device begins to extend, and then the lower guide device expands and contacts the borehole, the upper guide device begins to contract, and the lifting and contracting device begins to contract, and so on and so forth, so that the guide device can be moved in the borehole, the guide position of the rotating rod can be adjusted, and the drill rod shaft can be supported to prevent the hole lead hole from being skewed due to excessive swing amplitude during rotation due to the drill rod being too long when drilling an overly deep hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of an embodiment of the utility model;

[0016] Figure 2 It is a schematic diagram of a partial enlarged view of an embodiment of the utility model;

[0017] Figure 3 It is a front view of an embodiment of the utility model.

[0018] The markings in the figure are:

[0019] 1. Guide device; 11. Limit sleeve; 12. Support circular plate; 13. Articulated frame; 14. Connecting rod group; 15. Pull connecting rod; 16. First connecting rod; 17. Second connecting rod; 19. Lifting and adjusting mechanism; 191. Second supporting circular plate; 192. Arc support plate; 193. Raised block; 194. Mounting bracket; 195. Telescopic cylinder; 196. Groove; 2. Telescopic moving device; 21. Multi-stage telescopic cylinder; 22. Guide optical axis. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0021] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0022] like Figure 1-Figure 3 As shown, a fixed guide device for controlling the inclination of a hole in high-pressure jet grouting includes two guide devices 1 arranged in mirror symmetry and a telescopic moving device 2 arranged between the two guide devices 1, including:

[0023] The guide device 1 includes a limiting sleeve 11 rotatably engaged with the drill rod body, the upper and lower ends of the limiting sleeve 11 are fixedly connected with a supporting circular plate 12, and at least three articulated frames 13 are arranged on the outer wall of the limiting sleeve 11 at equal circumference, each articulated frame 13 is articulated with a connecting rod group 14, each connecting rod group 14 and the lifting and adjusting mechanism 19 are articulated with a pulling connecting rod 15, and the connecting rod group 14 is fixedly connected with an arc support plate 192;

[0024] By means of asynchronous expansion of the two guide devices 1 and cooperation with the telescopic moving device 2, the up and down movement in the borehole is realized, so that the relative position on the drill rod shaft can be adjusted in real time to complete the guidance of the drill rod shaft.

[0025] In this embodiment, when drilling a deep hole below 20m, the high-speed rotation of the drill rod itself will produce centrifugal swing, which will have a certain impact on the verticality of the drill bit at the bottom of the hole. This impact increases with the increase of the hole depth, causing the single-hole guide hole to be skewed. By changing the lifting and adjusting mechanism 19, the guide device 1 is fixed on the borehole, thereby stabilizing the drill rod body. The upper guide device 1 is first fixed on the borehole, and the lower guide device 1 is contracted and does not contact the borehole. Then the telescopic moving device 2 begins to extend, and then the lower guide device 1 expands and contacts the borehole. The upper guide device 1 begins to contract, and the lifting and contracting device begins to contract, and so on and so forth, so that the guide device 1 can move in the borehole and the guide position of the rotating rod can be adjusted.

[0026] As an optional implementation, Figure 2 , Figure 3 As shown, the connecting rod assembly 14 includes a first connecting rod 16 hinged at the upper end of the hinged frame 13 and a second connecting rod 17 hinged at the lower end of the hinged frame 13. The ends of the first connecting rod 16 and the second connecting rod 17 are hinged with a mounting bracket 194, and the mounting bracket 194 is fixedly connected to the arc support plate 192;

[0027] In this way, as a four-bar linkage, the adaptation to the drilling diameter can be achieved by changing the angles of the first link 16 and the second link 17 .

[0028] As an optional implementation, Figure 2 , Figure 3 As shown, the lifting and lowering adjustment mechanism 19 includes telescopic cylinders 195 which are arranged with equal circumference on the top of the upper support circular plate 12, and the telescopic ends of the three telescopic cylinders 195 are provided with a second support circular plate 191, and one end of each pulling link 15 is hinged to the corresponding first link 16, and the other end is hinged to the second support circular plate 191;

[0029] In this way, the telescopic cylinder 195 can be extended and retracted to pull a plurality of connecting rod groups 14 to achieve changes.

[0030] As an optional implementation, Figure 2 As shown, grooves 196 corresponding to the range of motion of the connecting rod assembly 14 are distributed on the supporting circular plate 12;

[0031] In this way, the groove 196 can enable the connecting rod assembly 14 to rotate at a larger angle, thereby increasing the adaptability of the guide mechanism to the drilling diameter range.

[0032] As an optional implementation, Figure 2 As shown, a plurality of protrusions 193 are provided on the arc-shaped support plate 192;

[0033] In this way, when the guide mechanism supports the drill hole, the protruding block 193 on the arc-shaped support plate 192 will penetrate into the drill hole, thereby enhancing the gripping force of the guide mechanism.

[0034] As an optional implementation, Figure 1 As shown, the telescopic moving device 2 includes three multi-stage telescopic cylinders 21 connected in equal circumference between two guide devices 1 and a guide optical shaft 22 fixedly connected to the guide device 1 at the bottom, and the guide optical shaft 22 is slidably connected to the guide device 1 at the upper end;

[0035] In this way, the longitudinal movement of the device is achieved, and the guiding optical axis 22 improves the guiding accuracy of the device.

[0036] A person skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention is limited to these examples; under the concept of the present invention, the technical features in the above embodiments or different embodiments may also be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity. Any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A fixed guide device for controlling the inclination of a hole in high-pressure jet grouting, comprising two guide devices (1) arranged in mirror symmetry and a telescopic moving device (2) arranged between the two guide devices (1), characterized in that: include: The guide device (1) comprises a limiting sleeve (11) rotatably engaged with the drill rod body, the upper and lower ends of the limiting sleeve (11) are fixedly connected to a supporting circular plate (12), the outer wall of the limiting sleeve (11) is provided with at least three hinged frames (13) at equal circumference, the limiting sleeve (11) is provided with a lifting and adjusting mechanism (19), each of the hinged frames (13) is hinged with a connecting rod group (14), each of the connecting rod groups (14) and the lifting and adjusting mechanism (19) is hinged with a pulling connecting rod (15), and the connecting rod group (14) is fixedly connected to an arc-shaped support plate (192); By means of asynchronous expansion of the two guide devices (1) and cooperation with the telescopic moving device (2), up and down movement in the borehole is achieved, so that the position relative to the drill rod shaft can be adjusted in real time, thereby completing the guidance of the drill rod shaft.

2. A fixed guide device for controlling the inclination of a hole in high-pressure jet grouting according to claim 1, characterized in that: The connecting rod group (14) includes a first connecting rod (16) hinged at the bottom to the upper end of the hinged frame (13) and a second connecting rod (17) hinged at the lower end of the hinged frame (13), and the ends of the first connecting rod (16) and the second connecting rod (17) are hinged with a mounting bracket (194), and the mounting bracket (194) is fixedly connected to the arc-shaped support plate (192).

3. A fixed guide device for controlling the inclination of a hole in high-pressure jet grouting according to claim 2, characterized in that: The lifting and lowering adjustment mechanism (19) comprises telescopic cylinders (195) which are arranged with equal circumference on the top of the supporting circular plate (12) at the upper end, and the telescopic ends of the three telescopic cylinders (195) are provided with a second supporting circular plate (191), and one end of each pulling link (15) is hinged to the corresponding first link (16), and the other end is hinged to the second supporting circular plate (191).

4. A fixed guide device for controlling the inclination of a hole in high-pressure jet grouting according to claim 1, characterized in that: Grooves (196) corresponding to the movable range of the connecting rod assembly (14) are distributed on the supporting circular plate (12).

5. A fixed guide device for controlling the inclination of a hole in high-pressure jet grouting according to claim 1, characterized in that: A plurality of protruding blocks (193) are arranged on the arc-shaped support plate (192).

6. A fixed guide device for controlling the inclination of a hole in high-pressure jet grouting according to claim 1, characterized in that: The telescopic moving device (2) comprises three multi-stage telescopic cylinders (21) connected in an equicircumferential manner between two of the guide devices (1) and a guide optical axis (22) fixedly connected to the guide device (1) at the bottom, and the guide optical axis (22) is slidably connected to the guide device (1) at the upper end.

Images