CN217201813U

CN217201813U - Steel wire rope guiding device of rotary drilling rig

Info

Publication number: CN217201813U
Application number: CN202220864239.3U
Authority: CN
Inventors: 赵彦玲
Original assignee: Tianjin Tongxin Coal Mine Machinery Manufacturing Co ltd
Current assignee: Tianjin Tongxin Coal Mine Machinery Manufacturing Co ltd
Priority date: 2022-04-13
Filing date: 2022-04-13
Publication date: 2022-08-16
Anticipated expiration: 2032-04-13

Abstract

The utility model relates to a dig wire rope guider of rig soon. The device comprises a support structure (1) connected with a mast, wherein a spherical connecting piece (2) in rolling contact with the support structure is embedded in the support structure (1), the spherical connecting piece (2) is connected with a connecting screw rod (10) at the radial extension end of the connecting screw rod, and a pulley support (4) is arranged at the outer end part of the connecting screw rod (10); a first guide wheel (5) and a second guide wheel (9) are rotatably connected to the pulley bracket (4), a tensioning device (6) is installed between the first guide wheel (5) and the second guide wheel (9), a tensioning wheel frame (7) is connected to the outer end of the tensioning device (6), and a tensioning pulley (8) is rotatably connected to the tensioning wheel frame (7). The utility model discloses can reduce the wearing and tearing between main hoist wire rope and the leading wheel, prolong wire rope's life.

Description

Steel wire rope guiding device of rotary drilling rig

Technical Field

The utility model belongs to the technical field of mining drilling rig equipment, especially, relate to a dig wire rope guider of rig soon.

Background

The rotary drilling rig is a comprehensive drilling rig, can use various bottom layers, and has the characteristics of high hole forming speed, less pollution, strong maneuverability and the like. The principle is that a drill rod is driven by a power head to realize that the drill rotates to cut rock and soil, then the drill is lifted out of a hole to unload the soil, and the drill is periodically operated in a circulating mode until the hole is formed.

At present, most rotary excavating machines all adopt a winch pressurizing structure, and compared with an oil cylinder pressurizing structure, the winch pressurizing structure is larger in pressurizing stroke and larger in pressurizing force, and can provide continuous and stable pressurizing force, so that the hole forming efficiency of the rotary drilling rig is improved. In the prior art, due to space limitation, a winch pressurization rotary drilling rig adopts a main winch rear structure, in order to reduce the bending moment of a main winch steel wire rope to a mast, a guide device for guiding the main winch steel wire rope is installed on the mast, the action position of working pressure on the mast is changed, and therefore the bending moment to the mast is reduced. Traditional guider includes with mast fixed connection's pulley support, installs the pulley spindle on pulley support, still includes the pulley of establishing at the pulley spindle cover. In the actual working process, the steel wire rope passes around the pulley, and the pulley plays a role in guiding and supporting the steel wire rope.

In the motion process of the steel wire rope, the steel wire rope drives the pulley to slide along the axial direction of the pulley shaft, lateral pressure can not be generated on the pulley when the steel wire rope and the pulley move to the central position, the steel wire rope can generate larger lateral pressure on the pulley at other positions, abrasion of the steel wire rope and the pulley is accelerated, the construction progress of the rotary drilling rig is influenced, and construction safety is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the technical problem that exists among the known art and provide a simple reasonable and strong wire rope guider who digs rig soon of security of structural design.

The utility model discloses a solve the technical scheme that technical problem that exists among the well-known technique took and be: a steel wire rope guiding device of a rotary drilling rig comprises a support structure connected with a mast, wherein a spherical connecting piece in rolling contact with the support structure is embedded in the support structure, a connecting screw rod at the radial extension end of the connecting screw rod is connected to the spherical connecting piece, and a pulley support is arranged at the outer end part of the connecting screw rod; the pulley support is rotatably connected with a first guide wheel and a second guide wheel, a tensioning device is installed between the first guide wheel and the second guide wheel, the outer end of the tensioning device is connected with a tensioning wheel frame, and the tensioning wheel frame is rotatably connected with a tensioning pulley.

The utility model has the advantages that: the utility model provides a steel wire rope guiding device of a rotary drilling rig, which can realize relatively free rotation of a pulley bracket compared with a support structure through the rotary connection mode of a spherical connecting piece and the support structure, namely, the pulley bracket has relatively high degree of freedom compared with the rotation of the support structure, so that the pulley bracket can swing along with the rope outlet position of a steel wire rope, thereby reducing the abrasion between a main hoisting steel wire rope and a guide wheel and prolonging the service life of the steel wire rope; through the arrangement of the tensioning device, the tensioning wheel frame and the tensioning pulley, the steel wire rope can always keep a straight state in the vertical vibration process of the drilling tool, the collision and friction between the swing of the steel wire rope and the drilling rod are reduced, and the drilling machine can stably and smoothly perform drilling operation.

Preferably: the support structure comprises a mounting plate connected with the mast, a first limiting plate is fixedly connected to the mounting plate through a connecting column, a second limiting plate is detachably connected to the first limiting plate, limiting through holes are formed in the first limiting plate and the second limiting plate, and the spherical connecting piece is embedded into the limiting through holes and is in rolling contact with the spherical connecting piece.

Preferably: the tensioning device comprises a linear bearing fixedly connected with the pulley bracket, a spring guide pillar is connected to the linear bearing in a sliding manner, a limiting plate is connected to the inner end of the spring guide pillar, and the outer end of the spring guide pillar is connected with the tensioning wheel frame; a tensioning spring sleeved on the spring guide post is arranged between the linear bearing and the tensioning wheel frame.

Preferably: and the back of the pulley bracket is fixedly connected with an installation sleeve, and the installation sleeve is in threaded connection with the connecting screw rod.

Preferably: the outer edge of the limiting through hole formed in the first limiting plate is provided with a round angle, and the inner edge of the limiting through hole formed in the second limiting plate is provided with a round angle.

Drawings

Fig. 1 is a schematic front view of the present invention;

FIG. 2 is a side view of a mounting structure and ball joint assembly structure of the present invention;

FIG. 3 is a schematic sectional view A-A of FIG. 2;

fig. 4 is a schematic perspective view of the tensioning device of the present invention.

In the figure: 1. a scaffold structure; 1-1, mounting a plate; 1-2, connecting columns; 1-3, a first limit plate; 1-4, a second limiting plate; 1-5, limiting through holes; 2. a spherical connecting member; 3. installing a sleeve; 4. a pulley bracket; 5. a first guide wheel; 6. a tensioning device; 6-1, spring guide post; 6-2, tensioning a spring; 6-3, linear bearings; 7. tensioning wheel frames; 8. a tension pulley; 9. a second guide wheel; 10. and connecting the screw rod.

Detailed Description

In order to further understand the contents, features and effects of the present invention, the following embodiments are described in detail:

referring to fig. 1, the wire rope guiding device of the rotary drilling rig of the present invention includes a supporting structure 1 connected to a mast, a spherical connecting member 2 in rolling contact with the supporting structure 1 is embedded in the supporting structure 1, and a connecting screw 10 extending along a radial direction of the spherical connecting member 2 is connected to the spherical connecting member 2. Further referring to fig. 2 and 3, the supporting structure 1 includes a mounting plate 1-1 connected to the mast, a first limiting plate 1-3 is fixedly connected to the mounting plate 1-1 through a connecting column 1-2, a second limiting plate 1-4 is detachably connected to the first limiting plate 1-3, in this embodiment, the first limiting plate 1-3 and the second limiting plate 1-4 are both triangular and connected by screws. The first limiting plate 1-3 and the second limiting plate 1-4 are both provided with limiting through holes 1-5, and the spherical connecting piece 2 is embedded into the limiting through holes 1-5 and is in rolling contact with the limiting through holes. In addition, the outer edges of the limiting through holes 1-5 formed in the first limiting plate 1-3 are provided with round corners, and the inner edges of the limiting through holes 1-5 formed in the second limiting plate 1-4 are provided with round corners.

In the installation process, the connection between the first limiting plate 1-3 and the second limiting plate 1-4 needs to be released, then the spherical connecting piece 2 is embedded into the limiting through hole 1-5 formed in the first limiting plate 1-3, and then the second limiting plate 1-4 is installed on the first limiting plate 1-3, so that part of the structure of the spherical connecting piece 2 penetrates through the limiting through hole 1-5 formed in the second limiting plate 1-4, in order to avoid the spherical connecting piece 2 from being separated from the support structure 1, the spherical center of the spherical connecting piece 2 needs to be ensured to be positioned between the first limiting plate 1-3 and the second limiting plate 1-4, and a certain distance is formed between two opposite surfaces of the first limiting plate 1-3 and the second limiting plate 1-4. In order to prolong the service life of the guide device, a layer of wear-resistant coating is coated in the limiting through holes 1-5 of the first limiting plate 1-3 and the second limiting plate 1-4.

As shown in fig. 1, a pulley bracket 4 is mounted at an outer end portion of the connecting screw rod 10, and further, a mounting sleeve 3 is fixedly connected to a back surface of the pulley bracket 4, and the mounting sleeve 3 is in threaded connection with the connecting screw rod 10. A first guide wheel 5 and a second guide wheel 9 are rotatably connected to the pulley bracket 4.

Compared with the conventional guiding device in the prior art, the pulley bracket 4 of the present embodiment can rotate more freely than the supporting structure 1 by the rotation connection manner of the spherical connecting member 2 and the supporting structure 1, that is, the pulley bracket 4 has a greater degree of freedom than the supporting structure 1, wherein the free rotation includes rotation in the axial direction of the first guiding wheel 5 and rotation in the radial direction of the first guiding wheel 5. Through the arrangement, the pulley bracket 4 can swing along with the rope outlet position of the steel wire rope, so that abrasion between the main hoisting steel wire rope and the guide wheel in the operation process of the rotary drilling rig is reduced.

It should be noted that, in the working process, the drilling tool of the rotary drilling rig may cause the steel wire rope to generate a margin in the vertical oscillation process, so that the steel wire rope cannot be constantly in the tightened state, which affects the normal operation of the rotary drilling rig, and in order to solve the above problem, the steel wire rope is further tensioned, so that the steel wire rope can always keep the tightened state in the vertical oscillation process of the drilling tool, as shown in fig. 1, the embodiment further includes a tensioning device 6 installed between the first guide wheel 5 and the second guide wheel 9, the outer end of the tensioning device 6 is connected with a tensioning wheel carrier 7, and the tensioning wheel carrier 7 is rotatably connected with a tensioning pulley 8. In the installation process, after the end part of the steel wire rope is pulled out from the winding device, the steel wire rope sequentially rounds the second guide wheel 9, the tensioning pulley 8 and the first guide wheel 5 from bottom to top and then is led out of the guide device, and then rounds a pulley assembly above a mast of the rotary drilling rig and is connected with a follow-up frame of the drilling rig.

Further referring to fig. 4, the tensioning device 6 includes a linear bearing 6-3 fixedly connected to the pulley bracket 4, a spring guide post 6-1 is slidably connected to the linear bearing 6-3, a limiting plate is connected to an inner end of the spring guide post 6-1, and an outer end of the spring guide post 6-1 is connected to the tensioning wheel frame 7; a tension spring 6-2 sleeved on the spring guide post 6-1 is arranged between the linear bearing 6-3 and the tension wheel carrier 7. When the steel wire rope generates excessive allowance due to the vertical oscillation of the drilling machine, the tension spring 6-2 is always in a compression state, and the excessive allowance of the steel wire can reduce the acting force applied to the tension pulley 8 by the steel wire rope at the tension pulley 8, so that the tension spring 6-2 extends for a certain distance, and the steel wire rope is always kept in a tension state under the action of the tension spring 6-2.

The working process is as follows: the support structure 1 is installed at a preset position on the back of a mast of a drilling machine through screws, a steel wire rope guide device is further installed on the rotary drilling machine, the end portion of a steel wire rope is drawn out from a winding device, sequentially bypasses a second guide wheel 9, a tensioning pulley 8 and a first guide wheel 5 from bottom to top and then is led out to the outside of the steel wire rope guide device, and the end portion of the steel wire rope led out from the steel wire rope guide device is connected with a follow-up frame of the drilling machine after bypassing a pulley assembly above the mast. In the drilling process of the drilling machine, the pulley support 4 swings along with the rope outlet position of the steel wire rope, so that abrasion between the steel wire rope and the guide wheel is reduced, meanwhile, the steel wire rope is always in a stretched state under the action of the tensioning device 6 and the tensioning pulley 8, collision and friction between the swing of the steel wire rope and a drill rod are reduced, and the drilling machine can stably and smoothly perform drilling operation.

Claims

1. The utility model provides a wire rope guider of rotary drilling rig which characterized by: the device comprises a support structure (1) connected with a mast, wherein a spherical connecting piece (2) in rolling contact with the support structure is embedded in the support structure (1), the spherical connecting piece (2) is connected with a connecting screw rod (10) at the radial extension end of the connecting screw rod, and a pulley support (4) is arranged at the outer end part of the connecting screw rod (10); a first guide wheel (5) and a second guide wheel (9) are rotatably connected to the pulley bracket (4), a tensioning device (6) is installed between the first guide wheel (5) and the second guide wheel (9), a tensioning wheel frame (7) is connected to the outer end of the tensioning device (6), and a tensioning pulley (8) is rotatably connected to the tensioning wheel frame (7).

2. The steel wire rope guiding device of the rotary drilling rig as claimed in claim 1, which is characterized in that: the support structure (1) comprises a mounting plate (1-1) connected with a mast, a first limiting plate (1-3) is fixedly connected onto the mounting plate (1-1) through a connecting column (1-2), a second limiting plate (1-4) is detachably connected onto the first limiting plate (1-3), limiting through holes (1-5) are formed in the first limiting plate (1-3) and the second limiting plate (1-4), and the spherical connecting piece (2) is embedded into the limiting through holes (1-5) and is in rolling contact with the limiting through holes.

3. The steel wire rope guiding device of the rotary drilling rig as claimed in claim 1, which is characterized in that: the tensioning device (6) comprises a linear bearing (6-3) fixedly connected with the pulley bracket (4), a spring guide post (6-1) is connected on the linear bearing (6-3) in a sliding manner, the inner end part of the spring guide post (6-1) is connected with a limiting plate, and the outer end part of the spring guide post (6-1) is connected with a tensioning wheel carrier (7); a tension spring (6-2) sleeved on the spring guide post (6-1) is arranged between the linear bearing (6-3) and the tension wheel carrier (7).

4. The steel wire rope guiding device of the rotary drilling rig as claimed in claim 1, which is characterized in that: the back of the pulley support (4) is fixedly connected with a mounting sleeve (3), and the mounting sleeve (3) is in threaded connection with the connecting screw rod (10).

5. The steel wire rope guiding device of the rotary drilling rig as claimed in claim 2, wherein: the outer edges of the limiting through holes (1-5) formed in the first limiting plate (1-3) are provided with round corners, and the inner edges of the limiting through holes (1-5) formed in the second limiting plate (1-4) are provided with round corners.