CN218971105U

CN218971105U - Driving sleeve for power head of rotary drilling rig

Info

Publication number: CN218971105U
Application number: CN202223408995.4U
Authority: CN
Inventors: 郝伟建; 杭龙飞
Original assignee: Changzhou Baomasheng Machinery Technology Co ltd
Current assignee: Changzhou Baomasheng Machinery Technology Co ltd
Priority date: 2022-12-19
Filing date: 2022-12-19
Publication date: 2023-05-05
Anticipated expiration: 2032-12-19

Abstract

The utility model discloses a power head driving sleeve of a rotary drilling rig, which comprises a sleeve body and a plurality of key bars detachably arranged on the sleeve body, wherein a flange plate is fixedly arranged on the outer wall of one end of the sleeve body, each key bar comprises a main body part, a bearing part and a reinforcing part, a key groove is formed in the inner wall of the sleeve body, the main body part is slidably arranged in the key groove, the cross section of the key groove is of an isosceles trapezoid structure, one end of the key groove is radially downwards provided with a groove, the bearing part is matched with the groove, a plurality of reinforcing parts are radially outwards convexly arranged at one end of the sleeve body far away from the flange plate, a gap is formed between two adjacent reinforcing parts, and the reinforcing part is positioned in the gap. According to the power head driving sleeve of the rotary drilling rig, the key bars are detachably arranged on the sleeve body, when the end faces of the key bars are worn, only the key bars are needed to be replaced, the maintenance cost is low, and the pressure-bearing part, the reinforcing part and the reinforcing part are arranged, so that the structural strength of the driving sleeve can be enhanced, and the service life of the driving sleeve can be prolonged.

Description

Driving sleeve for power head of rotary drilling rig

Technical Field

The utility model relates to the technical field of rotary drilling rigs, in particular to a power head driving sleeve of a rotary drilling rig.

Background

The rotary drilling rig is a construction machine suitable for pore-forming operation in construction extrusion engineering, the power head is the most main power source of the rotary drilling rig during operation, the power head comprises a driving sleeve, the driving sleeve is matched with a drill rod, the drill rod rotates to realize pore-forming operation, the driving sleeve is of a barrel-shaped structure as a whole, a plurality of uniformly distributed driving key bars are arranged on an inner ring, torque and pressure are transmitted between the driving key bars and the drill rod key bars in a matched manner, a driving groove is formed between two adjacent driving key bars, and the drill rod key bars are positioned in the driving groove. When the rotary drilling rig drills, the torque and the rotating speed output by the power head of the rotary drilling rig are transmitted through the contact between the driving sleeve key bar and the drill rod key bar, the drill rod is driven to rotate, so that the drilling tool is driven to rotate, and meanwhile, the pressurizing force transmitted to the power head by the pressurizing oil cylinder is also transmitted to the drill rod through the contact of the lower end face of the driving sleeve key bar, so that the drilling tool is driven to drill downwards. Among the prior art, the publication is CN101915058A, and it discloses a dig rig improved generation unit head drive cover soon, and it includes unit head drive cover body, and the unit head center is the drilling rod hole, and its inner wall is equipped with the direction drive groove, and the drilling rod cooperatees with direction drive groove and drilling rod hole, and during the use, the unit head drive drilling rod is rotatory to drive the drilling tool rotatory, realize drilling tool gyration cutting rock soil after until the pore-forming, and then accomplish the pore-forming operation. However, abrasion easily occurs between the drill rod and the guide driving groove, so that the driving sleeve body is a wearing part, the lower end face of the key bar pressing surface is abraded seriously, the driving sleeve body and the driving key bar are integrally arranged, and when the lower end face of the key bar pressing surface is abraded, the driving sleeve is required to be replaced, so that the maintenance cost is high.

Disclosure of Invention

Based on the above, it is necessary to provide a rotary drilling rig power head driving sleeve with low maintenance cost.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a dig rig unit head drive cover soon, dig rig unit head drive cover soon includes the cover body and detachably sets up a plurality of keybars on the cover body, fixedly be provided with the ring flange on the outer wall of the one end of the cover body, every the keybar includes interconnect's main part, pressure-bearing portion and reinforcement portion, offered the keyway on the inner wall of the cover body, main part slidable sets up in the keyway, the cross-section of keyway is isosceles trapezoid form structure, keyway one end forms the recess along radial downward, pressure-bearing portion with the recess cooperatees, the cover body is kept away from the one end of ring flange is equipped with a plurality of reinforcement along radial outside evagination, forms a space between the adjacent two the reinforcement, the reinforcement portion is located in the space.

Further, the extending direction of the main body portion is parallel to the extending direction of the reinforcing portion, and the extending direction of the pressure-bearing portion is perpendicular to the extending direction of the main body portion.

Further, the end face of the pressure-bearing portion, which is far away from one end of the main body portion, is flush with the end face of the sleeve body, which is far away from one end of the flange plate.

Further, the plurality of reinforcing parts and the plurality of reinforcing parts form a circular ring together.

Further, the main body part is connected with the key groove by using a fastener, and the reinforcing part is connected with the gap by using a connecting piece.

Further, a fixing hole is formed in the main body portion, a threaded hole is formed in the bottom wall of the key groove, the threaded hole corresponds to the fixing hole, and the fastener penetrates through the fixing hole and is in threaded connection with the threaded hole.

Further, a connecting hole is formed in the reinforcing portion, a counter bore is formed in the sleeve body, the counter bore corresponds to the connecting hole, and the connecting piece penetrates through the connecting hole and then is connected with the counter bore.

Further, the fastener and the connecting piece are both bolts.

Further, the plurality of fasteners are arranged in a straight line on the main body part, and the plurality of fasteners are arranged along the extending direction of the main body part.

Further, spring washers are arranged between the fastener and the fixing hole, and between the connecting piece and the connecting hole.

The beneficial effects of the utility model are as follows: according to the power head driving sleeve of the rotary drilling rig, the key bars are detachably arranged on the sleeve body, when the end faces of the key bars are worn, only the key bars are needed to be replaced, so that the maintenance cost is low, and meanwhile, the pressure bearing part, the reinforcing part and the reinforcing part are arranged, so that the structural strength of the driving sleeve can be enhanced, and the service life of the driving sleeve can be prolonged.

Drawings

The utility model is further described below with reference to the drawings and examples.

FIG. 1 is a schematic view of the construction of the power head drive sleeve of the rotary drilling rig of the present utility model;

FIG. 2 is a schematic view of another angle of the drive sleeve of the power head of the rotary drilling rig shown in FIG. 1;

fig. 3 is a top view of the rotary drilling rig power head drive sleeve of fig. 1.

The names and the numbers of the parts in the figure are respectively as follows:

cover 1 key bar 2 flange 11

Mounting hole 111 main body 21 pressure-receiving portion 22

Reinforcing part 23 key groove 12 groove 13

Screw hole 121 of fixing hole 211 of reinforcement 14

Connecting hole 231 counter bore 10 fastener 3

Connecting piece 4

Detailed Description

The present utility model will now be described in detail with reference to the accompanying drawings. The figure is a simplified schematic diagram illustrating the basic structure of the utility model only by way of illustration, and therefore it shows only the constitution related to the utility model.

Referring to fig. 1 to 3, the present utility model provides a power head driving sleeve of a rotary drilling rig, which comprises a sleeve body 1 and a plurality of key bars 2, wherein the key bars 2 are detachably arranged on the sleeve body 1, the plurality of key bars 2 are uniformly and equidistantly arranged along the circumferential direction of the sleeve body 1. In the present embodiment, the key bar 2 has six. In other not shown embodiments, the key bars 2 may also be three.

The sleeve body 1 is of a cylindrical structure with openings at two ends, one end of the sleeve body 1 is used for being connected with a transmission shaft, and a flange plate 11 is fixedly arranged on the outer wall of one end, close to the transmission shaft, of the sleeve body 1. Further, the flange 11 is provided with a plurality of mounting holes 111, and the plurality of mounting holes 111 are uniformly and equally spaced on the flange 11. When the sleeve body 1 is installed with the transmission shaft, the sleeve body is fixedly connected with the transmission shaft after passing through the installation hole 111 by using bolts.

Each key bar 2 includes a main body portion 21, a pressure-bearing portion 22, and a reinforcing portion 23 connected to each other, the pressure-bearing portion 22 being disposed between the main body portion 21 and the reinforcing portion 23 in a connected manner, and an extending direction of the main body portion 21 being parallel to an extending direction of the reinforcing portion 23. The main body 21 is attached to the inner wall of the sleeve body 1, and the reinforcing portion 23 is attached to the outer wall of the sleeve body 1.

The inner wall of the sleeve body 1 is provided with a key groove 12, and the main body 21 is slidably arranged in the key groove 12. Further, the cross section of the key groove 12 has an isosceles trapezoid structure, so that the horizontal direction of the key bar 2 can be restricted.

The groove 13 is formed downwards along radial direction in keyway 12 one end, and pressure-bearing portion 22 cooperatees with groove 13, and after pressure-bearing portion 22 installs in groove 13, the terminal surface of pressure-bearing portion 22 one end that keeps away from main part 21 flushes with the terminal surface of sleeve body 1 one end that keeps away from flange 11 to can guarantee drive sleeve's pleasing to the eye.

Further, a plurality of reinforcing members 14 are arranged at one end of the sleeve body 1 far away from the flange plate 11 in a radially outward protruding manner, the plurality of reinforcing members 14 are uniformly arranged at equal intervals on the sleeve body 1, a gap is formed between two adjacent reinforcing members 14, and the reinforcing portion 23 is located in the gap. It will be appreciated that the plurality of reinforcing portions 23 together with the plurality of reinforcing members 14 form a ring, thereby enabling the structural strength of the driving sleeve to be enhanced and the service life of the driving sleeve to be prolonged.

In order to make the connection between the key bar 2 and the sleeve body 1 more stable, the main body 21 and the key slot 12 are connected by using the fastener 3, and the reinforcing part 23 and the gap are connected by using the connecting piece 4. Specifically, the main body 21 is provided with a fixing hole 211, the bottom wall of the key slot 12 is provided with a threaded hole 121, the threaded hole 121 corresponds to the fixing hole 211, and the fastener 3 passes through the fixing hole 211 and is in threaded connection with the threaded hole 121. The reinforcing part 23 is provided with a connecting hole 231, the sleeve body 1 is provided with a counter bore 10, the counter bore 10 corresponds to the connecting hole 231, and the connecting piece 4 passes through the connecting hole 231 and then is connected with the counter bore 10. In the present embodiment, the fastener 3 and the connector 4 are bolts.

Further, the fastener 3 has a plurality, the plurality of fasteners 3 are arranged in a line on the main body portion 21, and the plurality of fasteners 3 are arranged along the extending direction of the main body portion 21.

In order to prevent the fastener 3 and the connecting member 4 from loosening, spring washers are provided between the fastener 3 and the fixing hole 211 and between the connecting member 4 and the connecting hole 231.

When the key bar 2 is installed, the main body 21 slides from one end of the key groove 12 to the other end of the key groove 12 until the pressure-bearing part 22 abuts against the bottom wall of the groove 13, the fastener 3 passes through the fixing hole 211 and then is in threaded connection with the threaded hole 121, and the connecting piece 4 passes through the connecting hole 231 and then is connected with the counter bore 10, so that the key bar 2 and the sleeve body 1 are fixed.

According to the power head driving sleeve of the rotary drilling rig, the key bars 2 are detachably arranged on the sleeve body 1, when the end faces of the key bars 2 are worn, only the key bars 2 are needed to be replaced, so that the maintenance cost is low, and meanwhile, the pressure bearing part 22, the reinforcing part 23 and the reinforcing part 14 are arranged, so that the structural strength of the driving sleeve can be enhanced, and the service life of the driving sleeve can be prolonged.

While the foregoing is directed to the preferred embodiment of the present utility model, other and further embodiments of the utility model may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.

Claims

1. The utility model provides a dig rig unit head drive cover soon which characterized in that: the rotary drilling rig power head driving sleeve comprises a sleeve body and a plurality of key bars detachably arranged on the sleeve body, a flange plate is fixedly arranged on the outer wall of one end of the sleeve body, each key bar comprises a main body part, a pressure bearing part and a reinforcing part which are mutually connected, a key groove is formed in the inner wall of the sleeve body, the main body parts are slidably arranged in the key groove, the cross section of the key groove is of an isosceles trapezoid structure, a groove is formed downwards in one end of the key groove along the radial direction, the pressure bearing parts are matched with the groove, a plurality of reinforcing parts are arranged at one end of the sleeve body, which is far away from the flange plate, along the radial direction outwards in a protruding mode, a gap is formed between every two adjacent reinforcing parts, and the reinforcing parts are located in the gap.

2. The rotary drilling rig power head drive sleeve of claim 1, wherein: the extending direction of the main body part is parallel to the extending direction of the reinforcing part, and the extending direction of the pressure-bearing part is perpendicular to the extending direction of the main body part.

3. The rotary drilling rig power head drive sleeve of claim 2, wherein: the end face of the pressure-bearing part far away from one end of the main body part is flush with the end face of the sleeve body far away from one end of the flange plate.

4. The rotary drilling rig power head drive sleeve of claim 1, wherein: the reinforcing parts and the reinforcing parts form a circular ring together.

5. The rotary drilling rig power head drive sleeve of claim 1, wherein: the main body part is connected with the key groove by using a fastener, and the reinforcing part is connected with the gap by using a connecting piece.

6. The rotary drilling rig power head drive sleeve of claim 5, wherein: the main body part is provided with a fixing hole, the bottom wall of the key groove is provided with a threaded hole, the threaded hole corresponds to the fixing hole, and the fastener penetrates through the fixing hole and is in threaded connection with the threaded hole.

7. The rotary drilling rig power head drive sleeve of claim 6, wherein: the reinforcing part is provided with a connecting hole, the sleeve body is provided with a counter bore, the counter bore corresponds to the connecting hole, and the connecting piece passes through the connecting hole and then is connected with the counter bore.

8. The rotary drilling rig power head drive sleeve of claim 7, wherein: the fastener and the connecting piece are both bolts.

9. The rotary drilling rig power head drive sleeve of claim 8, wherein: the fasteners are in a plurality of shapes, the fasteners are arranged in a straight line on the main body part, and the fasteners are arranged along the extending direction of the main body part.

10. The rotary drilling rig power head drive sleeve of claim 7, wherein: spring washers are arranged between the fastener and the fixing hole, and between the connecting piece and the connecting hole.