Anti-collision guide sleeve for drill bit of large shaft drilling machine

Abstract

The utility model relates to the technical field of guide sleeves, in particular to an anti-collision guide sleeve for a drill bit of a large shaft drilling machine. According to the technical scheme, the guide device comprises a guide sleeve and further comprises a plurality of sets of installation bases fixedly installed on the outer side of the guide sleeve, idler wheels are installed in the installation bases in a sliding mode, the guide sleeve comprises a first arc-shaped plate and a second arc-shaped plate, and the first arc-shaped plate is hinged to the second arc-shaped plate. The guide sleeve can be installed on the drill rod from one side of the drill rod without being inserted from one end of a drill bit, the structure is simple, installation is convenient, adjustment can be conducted according to the diameter of the drill rod, and practicability is high; meanwhile, the impact force between the roller and the well wall is reduced, so that the abrasion degree of the roller is reduced, and the service life of the guide sleeve is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of guide sleeves, in particular to an anti-collision guide sleeve for a drill bit of a large vertical shaft drilling rig. Background Art

[0002] The drill bit anti-collision guide sleeve is a device installed on the drill pipe of a large vertical shaft drilling rig, which is used to prevent the drill bit from rubbing and colliding with the well wall during drilling, thereby improving the durability of the drill pipe. In the prior art, there is a large drilling rig drill bit anti-collision guide sleeve, and its technical solution includes a guide sleeve, a drum stabilizer and a guide roller. A circle of rubber gaskets is arranged on the side wall of the inner ring of the guide sleeve, and a circle of guide rollers is evenly installed around the center of the circle on the outer ring of the drum stabilizer. The drum stabilizer is slidably installed in the guide sleeve, and a guide groove matching the guide roller is arranged on the rubber gasket. The present invention has the characteristics of reducing working noise, avoiding collision between the drill bit and the positioning bracket, and increasing the service life of the positioning bracket.

[0003] In the above working process, the connection between the positioning sleeve and the drill bit is achieved by inserting the drum-type stabilizer with the drill bit into the positioning bracket equipped with the guide sleeve. However, due to the long length of the drill bit of the drilling rig, this installation method requires insertion from one end of the drill bit, which is inconvenient to install. Therefore, we propose an anti-collision guide sleeve for the drill bit of a large vertical shaft drilling rig. Utility Model Content

[0004] The utility model aims to provide a large shaft drilling rig drill bit anti-collision guide sleeve to solve the problem that the drill bit of the drilling rig is long and the installation method of inserting from one end of the drill bit is inconvenient to install in the background technology.

[0005] The technical solution of the utility model is: a large vertical shaft drilling rig drill bit anti-collision guide sleeve, including the guide sleeve, and also includes:

[0006] A plurality of mounting seats fixedly mounted on the outer side of the guide sleeve, wherein rollers are slidably mounted in the mounting seats;

[0007] The guide sleeve comprises a first arc-shaped plate and a second arc-shaped plate, and the first arc-shaped plate and the second arc-shaped plate are hinged.

[0008] Optionally, a fixing plate is fixedly installed on one side of the first arc-shaped plate, connecting plates are fixedly installed on both ends of a side of the second arc-shaped plate close to the fixing plate, and mounting bolts are provided between the connecting plate and the fixing plate.

[0009] Optionally, the fixing plate is provided with a plurality of groups of threaded holes adapted to the mounting bolts, the connecting plates are provided with through holes for the mounting bolts to pass through, the mounting bolts pass through the through holes and are threadedly connected to the threaded holes, and rubber pads are fixedly installed on the inner sides of the first arc plate and the second arc plate.

[0010] Optionally, a reinforcing plate is fixedly installed between the bottom of the mounting seat and the guide sleeve, sliding seats are fixedly installed on both sides of the mounting seat, and the roller is slidably installed in the sliding seats.

[0011] Optionally, a rotating shaft is slidably installed in the sliding seat, the roller is rotatably installed on the rotating shaft, and sliding blocks are fixedly installed at both ends of the rotating shaft, and the sliding blocks are slidably installed in the sliding seat.

[0012] Optionally, an anti-wear layer is provided on the outer side of the roller, a guide rod is fixedly installed in the sliding seat, the slider is slidably sleeved on the guide rod, and a spring is fixedly connected between the slider and the inner wall of the sliding seat.

[0013] Compared with the prior art, the utility model has the following beneficial technical effects:

[0014] 1. The utility model realizes that the guide sleeve can be opened and installed on the drill rod from one side of the drill rod through the first arc plate, the second arc plate, the fixing plate, the connecting plate and the mounting bolts, without inserting from one end of the drill bit, and has a simple structure, convenient installation, and can be adjusted according to the diameter of the drill rod, and has strong practicality;

[0015] 2. The utility model reduces the impact force between the roller and the well wall through the mounting seat, the sliding seat, the roller, the spring, the guide rod and the slider, thereby reducing the wear of the roller and increasing the service life of the guide sleeve.

[0016] The utility model realizes that the guide sleeve can be opened and installed on the drill pipe from one side of the drill pipe without inserting it from one end of the drill bit. The utility model has the advantages of simple structure, convenient installation, and can be adjusted according to the diameter of the drill pipe, and has strong practicality. At the same time, it realizes reducing the impact force between the roller and the well wall, thereby reducing the wear degree of the roller and increasing the service life of the guide sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The overall structure of the utility model is shown in FIG. Figure 1 ;

[0018] Figure 2 The overall structure of the utility model is shown in FIG. Figure 2 ;

[0019] Figure 3 A schematic diagram of the side cross-sectional structure of the mounting seat in the utility model is given.

[0020] Figure numerals: 1. guide sleeve; 101. first arc plate; 102. second arc plate; 2. mounting seat; 3. roller; 4. sliding seat; 5. rubber pad; 6. fixing plate; 7. connecting plate; 8. mounting bolt; 9. rotating shaft; 10. slider; 11. spring; 12. threaded hole; 13. anti-wear layer; 14. reinforcing plate; 15. guide rod. DETAILED DESCRIPTION

[0021] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0022] The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0023] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0024] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] It should be noted that the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Example

[0028] like Figure 1-3 As shown, the utility model proposes a large vertical shaft drilling rig drill bit anti-collision guide sleeve, including a guide sleeve 1, and also includes a plurality of mounting seats 2 fixedly mounted on the outside of the guide sleeve 1, and a roller 3 is slidably mounted in the mounting seat 2;

[0029] Among them, a reinforcing plate 14 is fixedly installed between the bottom of the mounting seat 2 and the guide sleeve 1, a sliding seat 4 is fixedly installed on both sides of the mounting seat 2, and the roller 3 is slidably installed in the sliding seat 4. The reinforcing plate 14 is used to reinforce the connection between the mounting seat 2 and the guide sleeve 1 to prevent the mounting seat 2 from falling off during the drilling process and causing safety hazards.

[0030] In addition, a rotating shaft 9 is slidably installed in the sliding seat 4, and the roller 3 is rotatably installed on the rotating shaft 9. Slide blocks 10 are fixedly installed at both ends of the rotating shaft 9. The slide blocks 10 are slidably installed in the sliding seat 4. When the slide blocks 10 slide on the guide rod 15, the rotating shaft 9 fixedly installed between the two groups of slide blocks 10 is driven to slide.

[0031] Finally, an anti-wear layer 13 is provided on the outside of the roller 3, a guide rod 15 is fixedly installed in the sliding seat 4, the slider 10 is slidably sleeved on the guide rod 15, and a spring 11 is fixedly connected between the slider 10 and the inner wall of the sliding seat 4. When the drill bit is running, the roller 3 located on the outside of the guide sleeve 1 contacts the well wall formed by the drilling. Under the action of the spring 11, the impact force between the roller 3 and the well wall is reduced. Under the joint action of the anti-wear layer 13, the wear of the roller 3 is slowed down, and the service life of the guide sleeve 1 is increased.

[0032] In this embodiment, the guide sleeve 1 includes a first curved plate 101 and a second curved plate 102, the first curved plate 101 and the second curved plate 102 are hinged, a fixing plate 6 is fixedly installed on one side of the first curved plate 101, and connecting plates 7 are fixedly installed on both ends of the side of the second curved plate 102 close to the fixing plate 6, and mounting bolts 8 are provided between the connecting plate 7 and the fixing plate 6. According to the diameter of the drill rod, the mounting bolts 8 are passed through the through holes on the connecting plate 7 and then threadedly connected with the threaded holes 12 at different positions on the fixing plate 6, and then passed through the through holes on another group of connecting plates 7 to fix the drill rod, so that the guide sleeve 1 can be opened and installed on the drill rod from one side of the drill rod without inserting from one end of the drill bit. The structure is simple, the installation is convenient, and it can be adjusted according to the diameter of the drill rod, and the practicability is strong.

[0033] Among them, the fixing plate 6 is provided with multiple groups of threaded holes 12 adapted to the mounting bolts 8, and the connecting plates 7 are provided with through holes for the mounting bolts 8 to pass through. The mounting bolts 8 pass through the through holes and are threadedly connected to the threaded holes 12. Rubber pads 5 are fixedly installed on the inner sides of the first arc plate 101 and the second arc plate 102. The rubber pads 5 are used to improve the tightness of the contact between the guide sleeve 1 and the drill rod, and at the same time prevent the surface of the drill rod from being worn.

[0034] Working principle: During the working process of the utility model, the drill rod is placed between the first curved plate 101 and the second curved plate 102. According to the diameter of the drill rod, the mounting bolts 8 are passed through the through holes on the connecting plate 7 and then threadedly connected with the threaded holes 12 at different positions on the fixing plate 6, and then passed through the through holes on another group of connecting plates 7 to fix the drill rod, so that the guide sleeve 1 can be opened and installed on the drill rod from one side of the drill rod without inserting from one end of the drill bit. The structure is simple, the installation is convenient, and it can be adjusted according to the diameter of the drill rod, and the practicality is strong. When the drill bit is running, the roller 3 located on the outside of the guide sleeve 1 contacts the well wall formed by the drilling. Under the action of the spring 11, the slider 10 slides on the guide rod 15, so that the rotating shaft 9 fixedly installed between the two groups of sliders 10 slides, thereby reducing the impact force between the roller 3 and the well wall. Under the joint action of the anti-wear layer 13, the wear of the roller 3 is slowed down, and the service life of the guide sleeve 1 is increased.

[0035] The above-mentioned specific embodiments are only several optional embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A large vertical shaft drilling rig drill bit anti-collision guide sleeve, comprising a guide sleeve (1), characterized in that: Also includes: A plurality of mounting seats (2) fixedly mounted on the outside of the guide sleeve (1), wherein rollers (3) are slidably mounted in the mounting seats (2); The guide sleeve (1) comprises a first arc-shaped plate (101) and a second arc-shaped plate (102), and the first arc-shaped plate (101) and the second arc-shaped plate (102) are hingedly connected.

2. The large vertical shaft drilling rig drill bit anti-collision guide sleeve according to claim 1, characterized in that: A fixing plate (6) is fixedly mounted on one side of the first arc-shaped plate (101), and connecting plates (7) are fixedly mounted on both ends of a side of the second arc-shaped plate (102) close to the fixing plate (6), and mounting bolts (8) are provided between the connecting plate (7) and the fixing plate (6).

3. The large vertical shaft drilling rig drill bit anti-collision guide sleeve according to claim 2, characterized in that: The fixing plate (6) is provided with a plurality of threaded holes (12) adapted to the mounting bolts (8), the connecting plate (7) is provided with through holes for the mounting bolts (8) to pass through, the mounting bolts (8) pass through the through holes and are threadedly connected to the threaded holes (12), and rubber pads (5) are fixedly installed on the inner sides of the first arc plate (101) and the second arc plate (102).

4. The large vertical shaft drilling rig drill bit anti-collision guide sleeve according to claim 3, characterized in that: A reinforcing plate (14) is fixedly installed between the bottom of the mounting seat (2) and the guide sleeve (1), a sliding seat (4) is fixedly installed on both sides of the mounting seat (2), and the roller (3) is slidably installed in the sliding seat (4).

5. The large vertical shaft drilling rig drill bit anti-collision guide sleeve according to claim 4, characterized in that: A rotating shaft (9) is slidably mounted in the sliding seat (4), the roller (3) is rotatably mounted on the rotating shaft (9), and sliding blocks (10) are fixedly mounted at both ends of the rotating shaft (9), and the sliding blocks (10) are slidably mounted in the sliding seat (4).

6. The large vertical shaft drilling rig drill bit anti-collision guide sleeve according to claim 5, characterized in that: The outer side of the roller (3) is provided with an anti-wear layer (13), the sliding seat (4) is fixedly provided with a guide rod (15), the sliding block (10) is slidably sleeved on the guide rod (15), and a spring (11) is fixedly connected between the sliding block (10) and the inner wall of the sliding seat (4).

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