CN-224200579-U - Power head and rotary drilling rig

Abstract

The utility model discloses a power head and a rotary drilling rig, wherein the power head comprises a power box fixedly connected with a sliding frame through connecting plates arranged on two sides, a buffer device is fixed on the top of the power box, driving sleeve equipment is arranged at the bottom of the power box, a casing driver of the driving sleeve equipment is detachably connected with a sleeve, and the power box can move up and down along the extending direction of a mast through the sliding frame so that the driving sleeve equipment and a drill rod have preset states. According to the utility model, the power box, the hydraulic system, the buffer device and the driving sleeve device are combined, the buffer device effectively absorbs impact force and vibration generated in the drilling process, the service life is prolonged, the casing driver of the driving sleeve device is detachably connected with the casing, and the power box can move up and down along the extending direction of the mast through the sliding frame, so that the drill rod can perform drilling work, the cutting efficiency and the guidance quality are improved, and the drilling task can be stably and efficiently completed under various geological conditions.

Inventors

• LIU TONG
• LI BO
• ZHANG DIAO
• WEI CHAO
• Wen Zuodong
• CUI GUANGLI
• WANG DESEN
• XIAO BING
• BAO PEIDONG
• GUO JIAJU
• ZHAO BAO
• LI PENGFEI
• YI XIANKUN
• SHI XINGKAI
• Zhang Fangchuan
• ZHAO QINGSHUAI

Assignees

• 中铁三局集团有限公司
• 中铁三局集团桥隧工程有限公司

Dates

Publication Date

20260505

Application Date

20250520

Claims (10)

1. 1. A power head for use with a rotary drilling rig, the power head comprising: The sliding frame is in a square structure and is connected with the drilling machine main body of the rotary drilling machine through a sliding device; The power box is used for providing power for the drill rod and is fixedly connected with the sliding frame through connecting plates arranged on two sides; The buffer device is fixed at the top of the power box and is used for relieving the impact of the power head; The hydraulic system is arranged on the power box and is positioned between the buffer device and the sliding frame; The driving sleeve device is arranged at the bottom of the power box and comprises a disc assembly, a casing driver and a sleeve which are coaxially and sequentially arranged, and the casing driver is detachably connected with the sleeve; In the assembled state, the power box can be moved up and down along the extension direction of the mast by the skid so that the drive sleeve device and the drill rod have a preset state.
2. 2. The power head of claim 1, wherein the power box has a first output shaft slidably coupled to the drill pipe and a second output shaft detachably coupled to the drive sleeve apparatus.
3. 3. The power head of claim 1, wherein the disc assembly comprises a drive disc and a connecting disc, the connecting disc is sleeved on the drive disc, the top of the drive disc is mounted on the power box, and the bottom of the drive disc is connected with the connecting disc and the casing driver through connecting shafts.
4. 4. The power head of claim 3, wherein an end of the casing driver remote from the connection disc is connected to the sleeve by a first pin; The driving sleeve device further comprises a boot, wherein the boot is positioned at the bottom end of the sleeve and is connected with the sleeve through a second pin shaft.
5. 5. The power head of claim 1, wherein the power box comprises: The box body is connected with the sliding frame through the connecting plate; The sleeve is sleeved at the axle center of the box body, a rotary assembly and a driving assembly are arranged on the sleeve, and the driving assembly is used for driving the sleeve to drive the drill rod to rotate along the circumferential direction of the sleeve; The driving assembly comprises a gear ring, a plurality of driving gears and driven gears, wherein the gear ring and the driving gears are arranged in the box body, the driven gears are arranged on the sleeve, and the driving gears are respectively meshed with the driven gears and the gear ring.
6. 6. The power head as claimed in claim 5, wherein the inner wall of the sleeve is provided with a plurality of splines along the circumferential direction of the sleeve, the splines extending in the axial direction of the sleeve; the key bars comprise a plurality of first key bars and a plurality of second key bars, the first key bars are fixedly connected with the sleeve, the second key bars are detachably connected with the sleeve, and the first key bars are located between two adjacent second key bars.
7. 7. The power head of claim 6, wherein one end of the second key bar is provided with a limiting piece with an L-shaped structure, the limiting piece is provided with a plurality of threaded holes, and the threaded holes are distributed at intervals along the extending direction of the limiting piece; and a groove is formed between the limiting piece and the second key bar, the end part of the sleeve is clamped in the groove in the assembled state, and the power box is matched with the drill rod to transmit torque and pressure.
8. 8. The power head of claim 7, wherein the hydraulic system is a hydraulic motor, and a speed reducer is arranged at the top of the box body and close to the hydraulic motor, and is used for controlling the rotating speed and the transmission torque of the power head.
9. 9. The power head of claim 1, wherein the cushioning device comprises a cushioning platen, a plurality of spring assemblies, and a cushioning chassis, wherein the plurality of spring assemblies are located between the cushioning platen and the cushioning chassis and are spaced apart along a circumference of the cushioning platen.
10. 10. A rotary drilling rig comprising a rig body, a mast mounted on the rig body, a drill pipe and a drill tool at one end of the drill pipe, and a power head as claimed in any one of claims 1 to 9; Wherein the power head is mounted on the mast.

Description

Power head and rotary drilling rig Technical Field The utility model relates to the technical field of rotary drilling rigs, in particular to a power head and a rotary drilling rig. Background The rotary drilling rig is a construction process suitable for pore-forming operation in building foundation engineering, has the advantages of high installation power, good pore-forming quality, high construction efficiency, small environmental pollution and the like, and is widely applied to construction engineering such as underground engineering, foundation treatment, pile foundation and the like. In the prior art, the rotary drilling rig comprises a power head, a drill rod, a drill bit, a hydraulic system and the like, wherein the power head of the rotary drilling rig is mainly used for drilling and propelling, plays a vital role in the drilling process, and particularly plays a role in construction under hard rock and complex geological conditions. However, when the conventional power head is used for treating complex geology, the conventional power head is easy to be worn greatly and has low cutting and tilting efficiency, so that the construction period is prolonged, the drilling speed is slowed down, meanwhile, the deviation is easy to occur, the drilling precision is influenced, and the accuracy and timeliness of the drilling position are influenced. Disclosure of utility model The utility model provides a power head driving sleeve and a rotary drilling rig, which aims to solve the problems that when a traditional power head is used for treating complex geology, the traditional power head is easy to be worn greatly and has low cutting and tilting efficiency, so that the construction period is prolonged, the drilling speed is slowed down, meanwhile, the deviation is easy to occur, the drilling precision is influenced, and the accuracy and timeliness of the drilling position are influenced, and the adopted technical scheme is as follows: according to a first aspect of the present application, there is provided a power head for use with a rotary drilling rig, the power head comprising: The sliding frame is in a square structure and is connected with the drilling machine main body of the rotary drilling machine through a sliding device; The power box is used for providing power for the drill rod and is fixedly connected with the sliding frame through connecting plates arranged on two sides; The buffer device is fixed at the top of the power box and is used for relieving the impact of the power head; The hydraulic system is arranged on the power box and is positioned between the buffer device and the sliding frame; The driving sleeve device is arranged at the bottom of the power box and comprises a disc assembly, a casing driver and a sleeve which are coaxially and sequentially arranged, and the casing driver is detachably connected with the sleeve; In the assembled state, the power box can be moved up and down along the extension direction of the mast by the skid so that the drive sleeve device and the drill rod have a preset state. In some embodiments, the power box has a first output shaft slidably coupled to the drill pipe and a second output shaft detachably coupled to the drive sleeve apparatus. In some embodiments, the disc assembly comprises a driving disc and a connecting disc, the connecting disc is sleeved on the driving disc, the top of the driving disc is installed on the power box, and the bottom of the driving disc is connected with the connecting disc and the casing driver through connecting shafts. In some embodiments, an end of the casing driver remote from the connection disc is connected to the sleeve by a first pin; The driving sleeve device further comprises a boot, wherein the boot is positioned at the bottom end of the sleeve and is connected with the sleeve through a second pin shaft. In some embodiments, the power box comprises: The box body is connected with the sliding frame through the connecting plate; The sleeve is sleeved at the axle center of the box body, a rotary assembly and a driving assembly are arranged on the sleeve, and the driving assembly is used for driving the sleeve to drive the drill rod to rotate along the circumferential direction of the sleeve; The driving assembly comprises a gear ring, a plurality of driving gears and driven gears, wherein the gear ring and the driving gears are arranged in the box body, the driven gears are arranged on the sleeve, and the driving gears are respectively meshed with the driven gears and the gear ring. In some embodiments, the inner wall of the sleeve is provided with a plurality of splines along the circumference of the sleeve, the splines extending in the axial direction of the sleeve; the key bars comprise a plurality of first key bars and a plurality of second key bars, the first key bars are fixedly connected with the sleeve, the second key bars are detachably connected with the sleeve, and the first key bars are located betw