CN-224229099-U - Hard alloy TC bearing for well drilling

CN224229099UCN 224229099 UCN224229099 UCN 224229099UCN-224229099-U

Abstract

The utility model relates to the technical field of bearings for drilling, in particular to a hard alloy TC bearing for drilling, which can effectively improve the bearing capacity and wear resistance of the bearing and prolong the service life of the TC bearing; including the bearing rigid body outer lane and the bearing rigid body inner circle that the suit is in the same place, the inside snare of bearing rigid body outer lane is inside, the multiunit outer lane keyway has been seted up to annular equidistance on the bearing rigid body outer lane inner wall, all fixed embedding has the outer lane base member in the multiunit outer lane keyway, and multiunit outer lane base member heavy groove has been seted up to the inboard equal distance of every group outer lane base member, all fixed embedding has outer ring alloy piece in every group outer lane base member heavy groove, the annular equidistant multiunit inner circle keyway that is equipped with on the bearing rigid body inner wall, multiunit inner circle base member heavy groove has been seted up to the equal distance in every group inner circle base member outside, and the inner circle base member heavy groove quantity is the same with outer lane base member heavy groove, all fixed embedding has inner circle alloy piece in every group inner circle base member heavy groove.

Inventors

YU HAIYANG
ZHANG NAN
GENG ZHENHAI
REN HUI
WANG HAILONG
ZHENG QUAN

Assignees

潍坊市宇宏石油机械有限公司

Dates

Publication Date: 20260512
Application Date: 20250616

Claims (4)

1. The hard alloy TC bearing for drilling is characterized by comprising a bearing rigid body outer ring (1) and a bearing rigid body inner ring (2) which are sleeved together, wherein the bearing rigid body inner ring (2) is sleeved inside the bearing rigid body outer ring (1); The bearing rigid body outer ring (1), the inner wall of the bearing rigid body outer ring (1) is provided with a plurality of groups of outer ring key grooves (3) in annular equidistant mode, outer ring matrixes (4) are fixedly embedded in the plurality of groups of outer ring key grooves (3), a plurality of groups of outer ring matrix sinking grooves (5) are formed in the inner side of each group of outer ring matrixes (4) at equal intervals, and outer ring alloy blocks (6) are fixedly embedded in each group of outer ring matrix sinking grooves (5); Bearing rigid body inner circle (2), annular equidistance is equipped with multiunit inner circle keyway (7) on bearing rigid body inner circle (2) outer wall, and inner circle keyway (7) quantity is the same with outer lane keyway (3) quantity, all fixed embedding has inner circle base member (8) in multiunit inner circle keyway (7), multiunit inner circle base member heavy groove (9) have been seted up to the equal distance in every group inner circle base member (8) outside, and inner circle base member heavy groove (9) quantity is the same with outer lane base member heavy groove (5), all fixed embedding has inner circle alloy piece (10) in every group inner circle base member heavy groove (9).
2. A cemented carbide TC bearing for well drilling according to claim 1, wherein the inner sides of said outer ring matrix (4) and said outer ring alloy blocks (6) are each arcuate concave surfaces aligned with the inner wall of said bearing rigid outer ring (1), and the outer sides of said inner ring matrix (8) and said inner ring alloy blocks (10) are each arcuate convex surfaces aligned with the outer wall of said bearing rigid inner ring (2).
3. A cemented carbide TC bearing for well drilling according to claim 2, wherein a plurality of said outer ring matrix (4) and inner ring matrix (8) and said outer ring alloy block (6) and inner ring alloy block (10) are each made of cemented tungsten carbide.
4. A cemented carbide TC bearing for drilling according to claim 3, characterised in that the surfaces of said bearing rigid outer ring (1) and bearing rigid inner ring (2) are sintered with tungsten carbide powder.

Description

Hard alloy TC bearing for well drilling Technical Field The utility model relates to the technical field of bearings for drilling, in particular to a hard alloy TC bearing for drilling. Background The hard alloy (TC) bearing is a special composite sliding bearing for the petroleum drilling industry, which takes drilling fluid as a lubricating medium, and consists of an inner ring and an outer ring, wherein the inner ring is fixed on a shaft and rotates together with the shaft, the outer ring is connected with a drill collar and supports the rotation motion of the inner ring and a rotating shaft, the inner ring and the rotating shaft are matched to form a working surface, the main function is to transmit the torque and the rotating speed of a motor to a drill bit, and the special composite sliding bearing is suitable for the severe drilling working condition environment with narrow radial space, high load, large impact and strong vibration in the pit, is widely used for screw drilling tools and turbine drilling tools, is the core parts of the screw drilling tools and the turbine drilling tools, and directly determines the service life of the power drilling tools. At present, the conventional TC bearing for drilling is simple in structure, has the service life of only 200-250h, is short in service life, and is insufficient in bearing capacity and wear resistance. Disclosure of utility model In order to solve the technical problems, the utility model provides the hard alloy TC bearing for drilling, which can effectively improve the bearing capacity and wear resistance of the bearing and prolong the service life of the TC bearing. Technical proposal The hard alloy TC bearing for drilling comprises a bearing rigid outer ring and a bearing rigid inner ring which are sleeved together, wherein the bearing rigid inner ring is sleeved inside the bearing rigid outer ring, a plurality of groups of outer ring key grooves are annularly and equidistantly formed in the inner wall of the bearing rigid outer ring, outer ring matrixes are fixedly embedded in the plurality of groups of outer ring key grooves, a plurality of groups of outer ring matrix sinking grooves are uniformly formed in the inner side of each group of outer ring matrix, outer ring alloy blocks are fixedly embedded in each group of outer ring matrix sinking grooves, a plurality of groups of inner ring key grooves are annularly and equidistantly formed in the outer wall of the bearing rigid inner ring, the number of the inner ring key grooves is the same as that of the outer ring key grooves, inner ring matrixes are fixedly embedded in the plurality of groups of inner ring matrix sinking grooves, the number of inner ring matrix sinking grooves is the same as that of the outer ring matrix sinking grooves, and inner ring alloy blocks are fixedly embedded in each group of inner ring matrix sinking grooves. Preferably, the inner sides of the outer ring matrix and the outer ring alloy blocks are arc concave surfaces, the arc concave surfaces are aligned with the inner wall of the outer ring of the bearing rigid body, the outer sides of the inner ring matrix and the inner ring alloy blocks are arc convex surfaces, and the arc convex surfaces are aligned with the outer wall of the inner ring of the bearing rigid body. Preferably, the outer ring matrix and the inner ring matrix and the outer ring alloy block and the inner ring alloy block are made of tungsten carbide hard alloy materials. Preferably, tungsten carbide powder is sintered on the surfaces of the outer ring and the inner ring of the bearing rigid body. Compared with the prior art, the method has the beneficial effects that during processing, the bearing is more suitable for the severe working environment at the bottom of the well by respectively arranging the outer ring key groove and the inner ring key groove on the inner wall of the outer ring of the bearing rigid body and the outer wall of the inner ring of the bearing rigid body, the number of the outer ring key groove and the inner ring of the bearing rigid body are determined according to the diameters of the outer ring of the bearing rigid body and the inner ring of the bearing rigid body, the outer ring matrix and the inner ring matrix are respectively fixedly embedded in the outer ring key groove and the inner ring key groove, and a plurality of outer ring alloy blocks and inner ring alloy blocks are respectively fixedly embedded in the outer ring matrix and the inner ring matrix, so that the bearing capacity and the wear resistance of the bearing can be further adapted to the severe working environment at the bottom of the well, the bearing capacity and the wear resistance of the bearing can be effectively improved, and the service life of the TC bearing can be prolonged. Drawings FIG. 1 is a schematic illustration of an axially measured structure of the present utility model; FIG. 2 is a schematic illustration of an axially explosive structure