CN210068891U - Drive part of rock-socketed drilling machine - Google Patents

Abstract

The utility model provides a drive part of rock-socketed drilling machine, it includes two inverter motor groups that symmetrical set up, the thrust bearing case of being connected with the inverter motor transmission and be used for installing the drive part casing of inverter motor group and thrust bearing case, every inverter motor group includes a plurality of inverter motor, be connected and fixed mounting planetary gear case on the drive part casing with each inverter motor transmission respectively, respectively with planetary gear case's output shaft looks fixed connection and locate the inside pinion shaft subassembly of drive part casing. The driving part is driven by a variable frequency motor, has wide speed change range, high output energy efficiency and large output torque, can rotate forwards and backwards, has stepless speed change, and can bear very large axial load. Two thrust spherical roller bearings and two cylindrical roller bearings are respectively selected for the upper part and the lower part of the driving part, so that the driving part can bear very large axial force and lateral force, and the use requirements under various working conditions are met. The driving part and the sliding frame are connected through flanges, a positioning spigot is arranged in the middle, positioning is accurate, and mounting is convenient.

Description

Drive part of rock-socketed drilling machine

Technical Field

The utility model belongs to shield structure equipment field especially relates to a rock-socketed drilling machine drive division.

Background

The existing driving part of the rock-socketed drilling machine has the following defects: the output torque is small; the axial bearing load is small; the multi-position hydraulic motor is used for driving, so that the overall output efficiency is low; the slurry discharge channel is easy to wear and is frequently replaced; mud easily enters the driving part; air leakage easily occurs in the intake passage.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an output efficiency is high, the big rock-socketed rig drive division of output moment of torsion.

In order to achieve the above object, the present invention provides a driving part of a rock-socketed drilling machine, which comprises two inverter motor sets symmetrically arranged, a thrust bearing box in transmission connection with the inverter motors, and a driving part housing for mounting the inverter motor sets and the thrust bearing box, wherein each inverter motor set comprises a plurality of inverter motors, a planetary gear box in transmission connection with each inverter motor respectively and fixedly mounted on the driving part housing, a pinion shaft assembly respectively fixedly connected with an output shaft of the planetary gear box and disposed inside the driving part housing, the thrust bearing box comprises an output shaft rotatably connected inside the driving part housing, a bearing assembly connected between the output shaft and the driving part housing, and an end cover assembly fixed on an upper end face of the driving part housing and disposed on an upper end portion of the driving shaft in a sealing manner, the output shaft is fixedly connected with the drill rod.

Preferably, the variable frequency motor set comprises three variable frequency motors, the variable frequency motors are distributed in a fan shape by taking the axis of the drill rod as a central line, the included angle degrees formed by the axes of the rotating shafts of the two adjacent motors and the connecting line of the axes of the drill rod are the same, and the included angle degrees are 35-45 degrees.

Preferably, the output shaft includes a main shaft body and a connecting ring protruding from the circumferential surface of the main shaft body, the bearing assembly includes thrust spherical roller bearings respectively sleeved on the main shaft body and respectively located above and below the connecting ring, full-complement cylindrical roller bearings are respectively located above the thrust spherical roller bearing located above and below the thrust spherical roller bearing located below, an outer ring of the full-complement cylindrical roller bearing is inserted into the top housing of the driving part housing and is sleeved on the main shaft body and is approximately flush with the upper end surface of the top housing, the end cap assembly includes a lower end cap and an upper end cap, the circumference of the lower end cap covers the upper end surfaces of the top housing and the outer ring of the main shaft full-complement cylindrical roller bearing, the lower end cap further has an extension section extending into the main shaft body, and an inner contraction ring is arranged on the inner side of the upper end portion of the main shaft body, an inner sealing pipe penetrating through the extension section is fixed on the inner collecting ring, and various sealing rings are arranged between the extension section and the inner sealing pipe.

Furthermore, the end cover assembly further comprises an upper end cover which is covered on the lower end cover and is inserted between the inner sealing pipe and the lower end cover, the upper end part of the upper end cover is provided with an upper end cover extending part which extends towards the radial direction of the upper end cover and is covered on the upper end cover, and a plurality of sealing rings are respectively arranged between the inner side wall of the extending section and the inner sealing pipe.

Preferably, the output shaft is hollow, and the inner side wall of the output shaft is provided with a wear-resistant layer.

Preferably, a lining pipe is arranged in the main shaft body, the inner diameter of the upper end portion of the inner sealing pipe is the same as that of the lining pipe, the inner sealing pipe is coaxial with the lining pipe, a first gap and a second gap are formed between the lower end cover and the main shaft body and the inner sealing pipe respectively, a through hole is formed in the lower end cover, an air channel is formed in the lower end cover, a compressed air flow channel is formed among the air channel, the through hole, the first gap and the second gap, and compressed air enters the wear-resistant layer through the compressed air flow channel to carry slurry out.

The utility model has the advantages of it is following: the driving part is driven by a variable frequency motor, has wide speed change range, high output energy efficiency and large output torque, can rotate forwards and backwards, has stepless speed change, and can bear very large axial load. Two thrust spherical roller bearings and two cylindrical roller bearings are respectively selected for the upper part and the lower part of the driving part, so that the driving part can bear very large axial force and lateral force, and the use requirements under various working conditions are met. The driving part and the sliding frame are connected through flanges, a positioning spigot is arranged in the middle, positioning is accurate, and mounting is convenient.

Drawings

FIG. 1 is a top view of the driving portion of the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

fig. 3 is a partial view B of fig. 2.

Detailed Description

The present invention will be further explained with reference to the embodiments of the drawings.

As shown in fig. 1, 2 and 3, the driving portion 4 includes two inverter motor sets symmetrically arranged, a thrust bearing box 42 in transmission connection with the inverter motors 41, and a driving portion housing 43 for mounting the inverter motor sets and the thrust bearing box 42, each inverter motor set includes a plurality of inverter motors 41, a planetary gear box 44 in transmission connection with each inverter motor 41 and fixedly mounted on the driving portion housing 43, a pinion shaft assembly 46 fixedly connected with an output end of the planetary gear box 44 and disposed inside the driving portion housing 43, the thrust bearing box 42 includes an output shaft 45 rotatably connected inside the driving portion housing 43, a bearing assembly connected between the output shaft 45 and the driving portion housing 43, and an end cover assembly fixed on an upper end surface of the driving portion housing 43 and sealed and disposed on an upper end portion of the driving shaft, the output shaft 45 is fixedly connected with the drill rod 5. The variable frequency motor set comprises three variable frequency motors 41 which are distributed in a fan shape by taking the axis of the drill rod 5 as a central line, the included angle degrees formed by the projection of the rotating shaft axes of the two adjacent motors and the common perpendicular line of the axis of the drill rod 5 on the upper end surface of the driving part shell 43 are the same, and the included angle degrees are 35-45 degrees. The output shaft 45 comprises a main shaft body 451 and a connecting ring 452 protruding from the circumferential surface of the main shaft body 451, the bearing assembly comprises spherical thrust roller bearings 453 respectively sleeved on the main shaft body 451 and respectively positioned above and below the connecting ring 452, full-complement cylindrical roller bearings 454 are respectively arranged above the spherical thrust roller bearings 453 positioned above and below the spherical thrust roller bearings 453 positioned below, an outer ring 455 of the full-complement cylindrical roller bearings 454 is arranged in the top shell of the driving part shell 43 in a penetrating manner, and is sleeved on the main shaft body 451 and is approximately flush with the upper end surface of the top shell, the end cover assembly comprises a lower end cover 456 and an upper end cover 457, the lower end cover 456 circumferentially covers the top shell and the upper end surface of the outer ring 455 on the full-complement cylindrical roller bearings 454, the lower end cover 456 further has an extending section extending into the main shaft body 451, an inner contraction ring is arranged on the inner side of the upper end of the main shaft body 451, an inner sealing pipe 4512 penetrating the extension section is fixed on the inner contraction ring, and various sealing rings are arranged between the extension section and the inner sealing pipe 4512. The end cover assembly further comprises an upper end cover 457 which is covered on the lower end cover 456 and is inserted between the inner sealing pipe 4512 and the lower end cover 456, the upper end portion of the upper end cover 457 is provided with an upper end cover extension section 458 which extends in the radial direction of the upper end cover and is covered on the upper end cover 457, and a plurality of sealing rings are respectively arranged between the inner side wall of the extension section and the inner sealing pipe 4512. The output shaft 45 is hollow, and the inner side wall of the output shaft is provided with a wear-resistant layer 459. The spindle body 451 is internally provided with a lining pipe 450, the inner diameter of the upper end part of the inner sealing pipe 4512 is the same as the inner diameter of the lining pipe 450, the inner sealing pipe 4512 is coaxial with the lining pipe 450, the inner sealing pipe 4512 and the spindle body 451 respectively form a first gap 4510 and a second gap 4511 with through holes formed thereon, the lower end cover 456 is internally provided with an oil injection channel 4514 and an air channel 4513, the through holes 4514, the first gap 4510 and the second gap 4511 form a compressed air flow channel, the compressed air has a plurality of compressed air flow channels which are distributed in a divergent manner by taking the axis of the spindle body as a center line, and slurry is taken out by entering the wear-resistant layer 459 through the air flow channel by adopting the principle of gas lift reverse circulation.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims (6)

1. A drive part of a rock-socketed drilling machine is characterized in that: the variable frequency motor assembly comprises two variable frequency motor sets which are symmetrically arranged, a thrust bearing box which is in transmission connection with the variable frequency motors, and a driving part shell which is used for installing the variable frequency motor sets and the thrust bearing box, wherein each variable frequency motor set comprises a plurality of variable frequency motors, a planetary gear box which is respectively in transmission connection with each variable frequency motor and is fixedly installed on the driving part shell, a pinion shaft assembly which is respectively in fixed connection with an output shaft of the planetary gear box and is arranged in the driving part shell, the thrust bearing box comprises an output shaft which is rotationally connected in the driving part shell, a bearing assembly which is connected between the output shaft and the driving part shell, and an end cover assembly which is fixed on the upper end face of the driving part shell and is provided with a sealing cover on the upper end part of the driving shaft, and the output shaft.

2. A rock-socketed drill drive as claimed in claim 1, characterized in that: the variable frequency motor set comprises three variable frequency motors, the variable frequency motors are distributed in a fan shape by taking the axis of the drill rod as a central line, the included angle degrees formed by the axes of the rotating shafts of the two adjacent motors and the axis connecting line of the drill rod are the same, and the included angle degrees are 35-45 degrees.

3. A rock-socketed drill drive as claimed in claim 1, characterized in that: the output shaft comprises a main shaft body and a connecting ring protruding out of the circumferential surface of the main shaft body, the bearing assembly comprises thrust spherical roller bearings which are respectively sleeved on the main shaft body and are respectively positioned above and below the connecting ring, full-complement cylindrical roller bearings are respectively arranged above the thrust spherical roller bearings positioned above and below the thrust spherical roller bearings positioned below, the outer ring of the full-complement cylindrical roller bearing is arranged in the top shell of the driving part shell in a penetrating manner, the inner ring of the full-complement cylindrical roller bearing is sleeved on the main shaft body and is approximately flush with the upper end surface of the top shell, the end cover assembly comprises a lower end cover and an upper end cover, the circumference of the lower end cover is covered on the upper end surfaces of the top shell and the outer ring on the full-complement cylindrical roller bearing, the lower end cover is also provided with an extension section which extends into the main shaft body, and the inner side of the upper end part of, an inner sealing pipe penetrating through the extension section is fixed on the inner collecting ring, and various sealing rings are arranged between the extension section and the inner sealing pipe.

4. A rock-socketed drill drive according to claim 3, characterized in that: the end cover assembly further comprises an upper end cover which is arranged on the lower end cover in a covering mode and is provided with an inner sealing pipe and an upper end cover which is inserted between the inner sealing pipe and the lower end cover, the upper end portion of the upper end cover is provided with an upper end cover extending part which extends towards the radial direction of the upper end cover and is arranged on the upper end cover in a covering mode, and multiple sealing rings are arranged between the inner side wall of the extending section and the inner sealing pipe respectively.

5. A rock-socketed drill drive as claimed in claim 1, characterized in that: the output shaft is hollow, and the inner side wall of the output shaft is provided with a wear-resistant layer.

6. A rock-socketed drill drive according to claim 3, characterized in that: the spindle body is internally provided with a lining pipe, the inner diameter of the upper end part of the inner sealing pipe is the same as that of the lining pipe, the inner sealing pipe is coaxial with the lining pipe, a first gap and a second gap are respectively formed between the lower end cover and the spindle body and the inner sealing pipe, a through hole is formed in the lower end cover, an air channel is formed in the lower end cover, a compressed air flow channel is formed among the air channel, the through hole, the first gap and the second gap, and compressed air enters the wear-resistant layer through the compressed air flow channel to carry out slurry.

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