CN214532770U

CN214532770U - Full-open type rotary-punching screw drill

Info

Publication number: CN214532770U
Application number: CN202022466019.9U
Authority: CN
Inventors: 黄玉明; 李大涛; 罗绪良
Original assignee: Tianjin Lilin Petroleum Machinery Co ltd
Current assignee: Tianjin Lilin Petroleum Machinery Co ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-10-29
Anticipated expiration: 2030-10-30

Abstract

The utility model belongs to the technical field of drilling tool, concretely relates to full open type rotary-impacting screw drill tool, including bypass valve assembly, anti-drop assembly, overload protection's motor assembly, cardan shaft assembly and open type rotary-impacting transmission shaft assembly that connect gradually, open type rotary-impacting transmission shaft assembly includes upper radial bearing group, transmission shaft casing, thrust bearing group, rotary-impacting subassembly, transmission shaft anti-drop mechanism, lower radial bearing group and transmission shaft; the upper radial bearing group and the thrust bearing group are arranged in the transmission shell, the transmission shaft anti-falling mechanism is connected with the transmission shaft, and the lower radial bearing group is arranged between the transmission shaft and the transmission shaft shell. The utility model adopts a simple mechanical structure, so that the transmission mechanism of the screw drill is safer and more reliable; the fully open rotary percussion drilling tool has the advantages that the drill bit is slowly abraded due to the light drill bit pressure and the large drill bit pressure under the high-frequency impact action, the service life of the drill bit is prolonged, and the crushing efficiency is high.

Description

Full-open type rotary-punching screw drill

Technical Field

The utility model belongs to the technical field of drilling tool, concretely relates to full open type is from screw rod drilling tool soon.

Background

The screw drill is the most common underground power tool used at present, is mainly used for deflecting and twisting azimuth construction of directional wells and horizontal wells, and is partially used for vertical well operation or sidetracking operation. The screw drilling tool is a positive displacement downhole power tool which takes drilling fluid as power and converts pressure energy of the drilling fluid into mechanical energy, a certain pressure difference is formed at an inlet and an outlet of a motor of the drilling tool in the working process to push a rotor to do planetary motion in a stator cavity, the revolution of the rotor is converted into the conical swing of a universal shaft, and the self-transmission of the rotor is transmitted to a drill bit through the universal shaft and a transmission shaft, so that the drilling operation is realized. During the drilling process, the output torque of the screw drill is proportional to the pressure difference between the inlet and the outlet of the motor. When the conventional screw rod drills a hard stratum and a soft and hard staggered stratum, the drilling efficiency is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a full open type rotary punching screw drilling tool to solve the problem that exists among the background art.

In order to achieve the above object, the utility model provides a following technical scheme: a full-open type spinning screw drill comprises a bypass valve assembly, an anti-drop assembly, an overload protection motor assembly, a universal shaft assembly and an open type spinning transmission shaft assembly which are sequentially connected, wherein the open type spinning transmission shaft assembly comprises an upper radial bearing group, a transmission shaft shell, a thrust bearing group, a spinning component, a transmission shaft anti-drop mechanism, a lower radial bearing group and a transmission shaft; go up radial bearing group and thrust bearing group and arrange in the transmission shaft casing, the transmission shaft anti-drop mechanism with the transmission shaft is connected, and its characterized in that is arranged in between transmission shaft and the transmission shaft casing to radial bearing group down: the spinning assembly is arranged in the transmission shaft shell and connected with the transmission shaft, the spinning assembly comprises a cam seat, a cam, a roller seat, a roller and an impact protection limiting structure, and a rubber shock pad is arranged between the cam and the cam seat and connected with the cam seat through a bolt; the roller is arranged in the roller seat, the roller seat is connected with the transmission shaft shell through a bolt, and the impact protection limiting mechanism is arranged between the upper mandrel and the lower mandrel of the transmission shaft.

The utility model has the advantages that: the utility model adopts a simple mechanical structure, so that the transmission mechanism of the screw drill is safer and more reliable; the fully open rotary percussion drilling tool has the advantages that the drill bit is slowly abraded due to the light drill bit pressure and the large drill bit pressure under the high-frequency impact action, the service life of the drill bit is prolonged, and the crushing efficiency is high.

Drawings

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

fig. 2 is a schematic structural view of the open-center spinning transmission shaft assembly of the present invention;

fig. 3 is a schematic structural diagram of the middle spinning assembly of the present invention.

Detailed Description

The following detailed description of the preferred embodiments of the present invention is provided in connection with the accompanying drawings.

As shown in fig. 1-3, a fully-open type spinning screw drill comprises a bypass valve assembly 1, an anti-drop assembly 2, an overload protection motor assembly 3, a universal shaft assembly 4 and an open type spinning transmission shaft assembly 5 which are connected in sequence, wherein the open type spinning transmission shaft assembly comprises an upper radial bearing group 51, a transmission shaft shell 52, a thrust bearing group 53, a spinning component 54, a transmission shaft anti-drop mechanism 55, a lower radial bearing group 56 and a transmission shaft 57; the upper radial bearing group and the thrust bearing group are arranged in the transmission shaft shell, the transmission shaft anti-falling mechanism is connected with the transmission shaft, the lower radial bearing group is arranged between the transmission shaft and the transmission shaft shell, the spinning assembly is arranged in the transmission shaft shell and connected with the transmission shaft, the spinning assembly 54 comprises a cam seat 541, a cam 542, a roller seat 543, a roller 544 and an impact protection limiting structure 545, and a rubber shock pad is arranged between the cam and the cam seat and connected through a bolt; the roller is arranged in the roller seat, the roller seat is connected with the transmission shaft shell through a bolt, and the impact protection limiting mechanism is arranged between the upper mandrel and the lower mandrel of the transmission shaft. The main function of the spinning assembly is to convert the rotary motion into axial motion through a cam and a roller. When the transmission shaft assembly is subjected to upward thrust, the cam is in contact with the roller, and the rotation operation is changed into axial motion; when the transmission shaft assembly is not subjected to upward thrust, the cam is separated from the roller, and the axial movement is stopped. The above-mentioned lubricating cooling of the workpiece movement is carried out entirely by the passage of the drilling fluid.

The utility model discloses full open type rotary-percussion screw drilling tool is a neotype effective technique that improves hard stratum and the crisscross stratum drilling speed of soft or hard. The principle is that the rotary percussion transmission shaft assembly provides axial high-frequency impact force while outputting rotating speed and torque in the drilling process, and rock is crushed under the combined action of rotation and impact.

It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims

1. A full-open type spinning screw drill comprises a bypass valve assembly, an anti-drop assembly, an overload protection motor assembly, a universal shaft assembly and an open type spinning transmission shaft assembly which are sequentially connected, wherein the open type spinning transmission shaft assembly comprises an upper radial bearing group, a transmission shaft shell, a thrust bearing group, a spinning component, a transmission shaft anti-drop mechanism, a lower radial bearing group and a transmission shaft; go up radial bearing group and thrust bearing group and arrange in the transmission shaft casing, the transmission shaft anti-drop mechanism with the transmission shaft is connected, and its characterized in that is arranged in between transmission shaft and the transmission shaft casing to radial bearing group down: the spinning assembly is arranged in the transmission shaft shell and connected with the transmission shaft, the spinning assembly comprises a cam seat, a cam, a roller seat, a roller and an impact protection limiting structure, and a rubber shock pad is arranged between the cam and the cam seat and connected with the cam seat through a bolt; the roller is arranged in the roller seat, the roller seat is connected with the transmission shaft shell through a bolt, and the impact protection limiting mechanism is arranged between the upper mandrel and the lower mandrel of the transmission shaft.