CN106194008B

CN106194008B - Screw rod jump bit

Info

Publication number: CN106194008B
Application number: CN201610776453.2A
Authority: CN
Inventors: 赵春雨; 李大涛
Original assignee: Tianjin Lilin Petroleum Machinery Co Ltd
Current assignee: Tianjin Lilin Petroleum Machinery Co Ltd
Priority date: 2016-08-30
Filing date: 2016-08-30
Publication date: 2018-10-26
Anticipated expiration: 2036-08-30
Also published as: CN106194008A

Abstract

The present invention relates to oil drilling cementing technology fields, more particularly to a kind of screw rod jump bit, including alternative connector, position-arresting disk, motor stator, motor rotor and edge cam, position-arresting disk is mounted in the locating slot of the motor stator left end, position-arresting disk left end outer edge at the top of the alternative connector external screw thread by compressing, position-arresting disk right end centre cylinder connects with the motor rotor left side plays position-limiting action, motor rotor right end internal thread is connect with the edge cam external screw thread, edge cam right side is contacted with the self aligning roller bearing face installed in water cap, the internal thread of water cap right end is connect with thrust axis left end microcephaly's external screw thread, thrust axis spindle nose left end has spline structure, and it is mutually inserted with spline structure on the lower quiet set of TC bearings.This tool then can rely on the axial force itself provided to complete broken rock task in the case, can also effectively alleviate the backing pressure phenomenon of drilling tool additionally, due to the vibrations that the axially reciprocating that tool itself generates generates.

Description

Screw rod jump bit

Technical field

The present invention relates to oil drilling cementing technology field more particularly to a kind of screw rod jump bits.

Background technology

It is the drilling well of mainstream in the world at present currently, using underground helicoid hydraulic motor in the drilling engineering of petroleum gas Tool, working method are driven by mud, drive bit broken rock, axial feed to lean on bit pressure to provide entirely, the impact to rock Power effect is not obvious, and in addition it is smaller to cut the cutting grain degree come for its drilling bit high-speed rotary, it has not been convenient to geological logging personnel The rotary cutting of drill bit is then changed to axially reciprocating by the judgement to bottom lithology, this structure, and one is provided certainly for drill bit Broken rock task is completed in the axial force of band, the impact that multi-frequency is carried out to rock.It the advantage is that in underground backing pressure serious situation Under, bit pressure is not obvious the effect of drill bit, and drill bit cannot be eaten well such as stratum, only poor by rotary cutting rock breaking efficiency, This structure then can rely on the axial force itself provided to complete broken rock task in the case, be generated additionally, due to tool itself The vibrations that axially reciprocating generates can also effectively alleviate the backing pressure phenomenon of drilling tool.

Invention content

It is an object of the invention to overcome the shortcomings of above-mentioned technology, and a kind of screw rod jump bit is provided, effective alleviate is bored The backing pressure phenomenon of tool.

The present invention to achieve the above object, using following technical scheme：

A kind of screw rod jump bit, it is characterised in that：Including alternative connector, position-arresting disk, motor stator, motor rotor and end Face cam, the position-arresting disk are mounted in the locating slot of the motor stator left end, and the position-arresting disk left end outer edge is by described It is compressed at the top of alternative connector external screw thread, position-arresting disk right end centre cylinder connects with the motor rotor left side to be played Position-limiting action, the motor rotor right end internal thread are connect with the edge cam external screw thread, the edge cam right side with The self aligning roller bearing face installed in water cap contacts, and ladder hole is respectively equipped among the edge cam and water cap, described Anti-lost nut is placed with inside ladder hole, the both ends of anti-lost connecting rod are connect with the anti-lost nut thread respectively, the water cap The internal thread of right end is connect with thrust axis left end microcephaly's external screw thread, and thrust axis both ends have two groups of TC bearings to play limit current limliting work With, what is connected with TC bearing groups has two groups of thrust bearings, distinguishes support compressions by two groups of disc spring groups between two groups of thrust bearings, and two Endoporus shoulder segmentation of the group disc spring group among spring overcoat, ensures that one group of disc spring group compresses and another group of disc spring group stretching, extension, pushes away Power axis spindle nose left end has spline structure, and is mutually inserted with spline structure on the lower quiet set of TC bearings.

Preferably, the position-arresting disk is hard alloy, has multiple flowing holes in disk body.

Preferably, the water cap left end has the cylindrical structure with locating slot, self aligning roller bearing that will be adjusted with bearing locating rod Heart roller bearing is fixed in water cap, has overcurrent hydrophthalmia in the middle part of water cap.

The beneficial effects of the invention are as follows:Compared with prior art, the utilization by using space cam structure of this structure, The circular-rotation that power motor part is generated changes into axial reciprocating motion, the advantage is that serious in underground backing pressure In the case of, bit pressure is not obvious the effect of drill bit, and drill bit cannot be eaten well such as stratum, only by rotary cutting rock breaking efficiency compared with Difference, this tool then can rely on the axial force itself provided to complete broken rock task, be produced additionally, due to tool itself in the case The vibrations that raw axially reciprocating generates can also effectively alleviate the backing pressure phenomenon of drilling tool.

Description of the drawings

Fig. 1 is the structural schematic diagram of the present invention；

In figure：1, alternative connector；2, position-arresting disk；3, motor stator；4, motor rotor；5, anti-lost nut；6, edge cam； 7, anti-lost connecting rod；8, bearing locating rod；9, self aligning roller bearing；10, water cap；11, straight shell；12, the quiet set of TC bearings on first； 13, the dynamic set of TC bearings on first；14, lock tube；15, upper spacer；16, moving-coil on the first thrust bearing；17, on the first thrust bearing Jing Quan；18, the first disc spring group；19, spring overcoat；20, thrust shaft housing；21, the second disc spring group；22, under the second thrust bearing Jing Quan；23, moving-coil under the second thrust bearing；24, lower spacer；25, second time quiet set of TC bearings；26, the dynamic set of second time TC bearing； 27, thrust axis.

Specific implementation mode

Below in conjunction with the accompanying drawings and the preferred embodiment specific implementation mode that the present invention will be described in detail.As shown in Figure 1, a kind of spiral shell Bar jump bit, including alternative connector 1, position-arresting disk 2, screw motor, spatial cam and thrust axle assembly, the position-arresting disk 2 are mounted in the locating slot of 3 left end of motor stator, and 2 left end outer edge of position-arresting disk at the top of 1 external screw thread of alternative connector by compressing, limit Position 2 right end centre cylinder of disk connects with 4 left side of motor rotor and plays position-limiting action, 4 right end internal thread of motor rotor and 6 external screw thread of edge cam connects, and 6 right side of edge cam is contacted with 9 end face of self aligning roller bearing installed in water cap 10, water cap The internal thread of 10 right ends is connect with 27 left end microcephaly's external screw thread of thrust axis, and 27 both ends of thrust axis have two groups of TC bearings to play limit limit Stream acts on, and one group of TC bearing is made of the dynamic set of TC bearings on the quiet set 12 and first of TC bearings on first 13, another group of TC bearing by The quiet set 25 of second time TC bearing and dynamic 26 compositions of set of second time TC bearing, what is connected with TC bearing groups has two groups of thrust bearings, and one Group thrust bearing is made of quiet circle 17 on moving-coil 16 on the first thrust bearing, the first thrust bearing, and another group of thrust bearing is by the Moving-coil 23 is constituted under the 22, second thrust bearing of quiet circle under two thrust bearings, and two groups of disc spring groups (first are leaned between two groups of thrust bearings Disc spring group 18, the second disc spring group 21) support compression, endoporus shoulder segmentation of two groups of disc spring groups among spring overcoat are protected respectively One group of disc spring group is demonstrate,proved to compress and another group of disc spring group stretching, extension, 27 spindle nose left end of thrust axis has a spline structure, and with second time TC axis The spline structure held on quiet set 26 is mutually inserted.

The position-arresting disk described in flow erosion in order to prevent, material are hard alloy, there is multiple flowing holes reductions pair in disk body The barrier effect of mud.

In order to realize that the rotation by motor becomes to be axially moved what spy was formed using edge cam 6 with self aligning roller bearing 9 Spatial cam, 10 left end of the water cap have the cylindrical structure with locating slot, self aligning roller bearing 9 will with bearing locating rod 8 Self aligning roller bearing is fixed in water cap, and edge cam 6 is rotated with the autobiography of motor rotor, surface and self aligning roller bearing 9 joints complete upper and lower reciprocating motion according to cam characteristic self aligning roller bearing 9 during 6 autobiography of edge cam.Institute Edge cam 6 is stated, has ladder hole among water cap 10, inside is placed with anti-lost nut 5, anti-lost connecting rod 7, and leans on screw thread phase Even.

Two groups of thrust bearings have a circle PDC hard-metal inserts, have spline structure and upper spacer on the quiet set of bearing 15, lower spacer 24 is connected and fixed.

The thrust axis 27, spindle nose left end have spline structure, with 26 quiet set mutual cooperation limit thrust axis of lower TC bearings 27 circular-rotation, completes axially reciprocating well.

The utilization by using space cam structure of this structure, the circular-rotation that power motor part is generated change It for axial reciprocating motion, the advantage is that under the backing pressure serious situation of underground, bit pressure is not obvious the effect of drill bit, bores Head cannot be eaten well such as stratum, and only poor by rotary cutting rock breaking efficiency, this tool can then rely on itself in the case The axial force of offer completes broken rock task, and the vibrations generated additionally, due to the axially reciprocating that tool itself generates can also have The backing pressure phenomenon of the alleviation drilling tool of effect.

The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered It is considered as protection scope of the present invention.

Claims

1. a kind of screw rod jump bit, it is characterised in that：Including alternative connector, position-arresting disk, motor stator, motor rotor and end face Cam, the position-arresting disk are mounted in the locating slot of the motor stator left end, and the position-arresting disk left end outer edge is by the generation With being compressed at the top of connector external screw thread, position-arresting disk right end centre cylinder connects with the motor rotor left side plays limit Position effect, the motor rotor right end internal thread are connect with the edge cam external screw thread, the edge cam right side and water The self aligning roller bearing face installed on cap contacts, and ladder hole, the rank are respectively equipped among the edge cam and water cap Anti-lost nut is placed with inside terraced through-hole, the both ends of anti-lost connecting rod are connect with the anti-lost nut thread respectively, and the water cap is right The internal thread at end is connect with thrust axis left end microcephaly's external screw thread, and thrust axis both ends have two groups of TC bearings to play limit metering function, What is connected with TC bearing groups has two groups of thrust bearings, distinguishes support compressions by two groups of disc spring groups between two groups of thrust bearings, two groups Endoporus shoulder segmentation of the disc spring group among spring overcoat, ensures that one group of disc spring group compresses and another group of disc spring group stretching, extension, thrust Axis spindle nose left end has spline structure, and is mutually inserted with spline structure on the lower quiet set of TC bearings.

2. screw rod jump bit according to claim 1, it is characterised in that：The position-arresting disk is hard alloy, is had in disk body Multiple flowing holes.

3. screw rod jump bit according to claim 1, it is characterised in that：The water cap left end has the cylinder knot with locating slot Self aligning roller bearing is fixed in water cap by structure, self aligning roller bearing with bearing locating rod, has overcurrent hydrophthalmia in the middle part of water cap.