CN208734274U - One kind is spun screw drive axle assembly - Google Patents
One kind is spun screw drive axle assembly Download PDFInfo
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- CN208734274U CN208734274U CN201821137198.8U CN201821137198U CN208734274U CN 208734274 U CN208734274 U CN 208734274U CN 201821137198 U CN201821137198 U CN 201821137198U CN 208734274 U CN208734274 U CN 208734274U
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Abstract
It spins screw drive axle assembly the utility model discloses one kind, it is by bearing case, string bearing group, center tap, block stamp shell, upper transmission shaft, lower drive shaft, spring, block stamp, hammering block, anti-lost snap ring, lower contact, the composition such as bit adapter, it is characterized in that existing rotational speed difference forces on the outer convex block in the middle part of lower drive shaft helicoid to be in contact in turning course with helicoid under the interior convex block on the inside of block stamp to engage between lower drive shaft and block stamp, the part torque of lower drive shaft revolution is converted into the thrust for pushing block stamp to be lifted up, drive guide groove of the block stamp on block stamp outer casing inner wall that initial tension of spring is overcome to be lifted up, when helicoid rises to the latter two separation of helicoid highest point on outer convex block under interior convex block, block stamp is under self weight and initial tension of spring effect, it moves downward and impacts hammering block and form shock loading, bit adapter will bore Pressure, torque, revolving speed and shock loading pass to drill bit, realize high-speed cutting and high-frequency percussion combined-breaking rock, improve drill bit efficiency of breaking rock.
Description
Technical field
The utility model relates to oil-gas drilling field of engineering technology, in particular to one kind screw drive axis that spins is total
At.
Background technique
As oil-gas exploration is constantly expanded to deep, the hard formation and bad ground encountered in drilling process is more and more.
Using conventional rotary drilling, usually due to drill bit there are broken rock energy it is insufficient, broken rock resistance is big the problems such as cause rate of penetration
It is low, drilling depth is short, drill bit and drilling tool premature failure, have been unable to meet deep-well, ultra-deep well drilling timeliness requirement.
By the exploration and practice of many years, the combined drilling skill of mud motor (helicoid hydraulic motor and turbodrill) is used
Art is developed rapidly, significant for soft~medium ground speed-increasing effect, but with the increase of well depth, formation hardness increases
Add, drillability variation has been not enough to so that the static load of the high revolving speed of mud motor generation, large torque cuts broken rock mode
Effect overcomes rock wall hardness and compression strength wedging stratum crushing rock, causes rate of penetration to reduce, the use of drilling tool and drill bit
The lost of life.
The speed-raising bottleneck encountered is crept into order to break through mud motor in the hard formation of deep-well, ultradeep well, people will revolve
The theory of drill well is introduced into combination drilling technology, has developed some mud motors with axial impact function.
But existing structure, in the presence of such as structure is complicated, components are more for spin drilling tool, cam needs while bearing high frequency sound to carry variation
Stress condition, life tools are short, pressure consumes high technical problem.
Utility model content
It spins screw drive axle assembly in view of this, the present invention provides one kind, the screw drive axle assembly that spins
Structure is simple, components are few, key part stress is single, good reliability, can be needed to adjust shock loading according to stratum, without bright
Aobvious pressure consumption increases.
To achieve the above object, the utility model provides the following technical solutions:
One kind is spun screw drive axle assembly, comprising: shell mechanism and the transmission mechanism being mounted in it, axial impact machine
Structure and bit adapter；
The outer wall of the transmission mechanism is provided with outer convex block；
The axial impact mechanism includes block stamp and elastic device；The block stamp is sheathed on the transmission mechanism, the punching
The inner wall of hammer has interior convex block, and the outer convex block can contact the interior convex block when the transmission mechanism creeps into and turns round and raise
The block stamp；The block stamp can move downward the impact bit adapter；The elastic device can provide for the block stamp
Pretightning force directed downwardly；
The shell mechanism includes block stamp shell, and the block stamp shell, which has, limits the block stamp movement to lead along axial
To structure.
Preferably, the outer convex block has helicoid on outer convex block, and the interior convex block has for the outer convex block
Spiral face contact raises helicoid under the interior convex block of cooperation.
Preferably, the quantity of the outer convex block is multiple, and the quantity of the interior convex block is to correspond with the outer convex block
It is multiple.
Preferably, multiple outer convex blocks are uniformly distributed circumferentially.
Preferably, the elastic device is spring.
Preferably, the axial impact mechanism further includes the hammering block being arranged between the block stamp and the bit adapter.
Preferably, the transmission mechanism includes upper transmission shaft and lower drive shaft, and the outer convex block is set to the underdrive
The outer wall of axis.
Preferably, the guide frame includes the guide groove that the block stamp outer casing inner wall is provided with along axial direction, the block stamp
Outer wall there is the guide pad that cooperates with the guide groove.
It preferably, further include anti-lost snap ring and lower contact；
The lower contact is fixedly connected on the block stamp shell, and the anti-lost snap ring covers on the outside of the bit adapter, institute
The lower end surface for stating anti-lost snap ring can be affiliated in the upper surface of the lower contact.
Preferably, the outer convex block is circumferentially discontinuous on the outer wall of the transmission mechanism, the interior convex block of the block stamp
It can be axially movable to above and below the outer convex block.
It can be seen from the above technical scheme that the screw drive axle assembly provided by the utility model that spins, has
Advantage and good effect are:
1, the axial impact loading for the torque and revolving speed and itself generation that screw motor generates can be passed into well simultaneously
Subdrilling head, to realize drilling bit high-speed cutting and high-frequency percussion combined-breaking rock；
2, structure is simple, components are few, and tool disassembling, assembling and replacing is convenient；
It 3, can basis since the axial impact loading of generation is directly proportional to initial tension of spring and block stamp hoisting depth
Strata condition, adjustment spring pretightning force and block stamp hoisting depth obtain corresponding axial impact loading；
4, helicoid is only used as opening vibration face under the interior convex block on the outer convex block on lower drive shaft on helicoid and block stamp, does not make
For shock surface, occur while bearing the stress feelings that high frequency sound carries variation during the work time so as to avoid two components
Condition, effectively improves that components working life is short and reliability；
5, axial impact loading is generated using mechanical drive mode, can be carried out conversion, therefore whole nothing without mud fluid power
Obvious pressure consumption increases, and the screw motor working performance being connected with the utility model is effectively ensured.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the overall structure diagram of the screw drive axle assembly provided by the embodiment of the utility model that spins；
Fig. 2 is the structural schematic diagram of the Section A-A along Fig. 1；
Fig. 3 is the structural schematic diagram of lower drive shaft provided by the embodiment of the utility model；
Fig. 4 is the structural schematic diagram of block stamp provided by the embodiment of the utility model；
Fig. 5 is the structural schematic diagram of block stamp shell provided by the embodiment of the utility model；
Fig. 6 a, Fig. 6 b and Fig. 6 c are the axial impact mistake of the screw drive axle assembly provided by the embodiment of the utility model that spins
The structural schematic diagram of journey；
Fig. 7 is the structural representation of the blank-run prevention function of the screw drive axle assembly provided by the embodiment of the utility model that spins
Figure.
Wherein, 1 is upper TC bearing inner race；2 be upper TC bearing outer ring；3 be bearing case；4 be string bearing group；5 be upload
Moving axis；6 be center tap；7 be pressing plate；8 be block stamp shell；9 be spring；10 be lower drive shaft；11 be block stamp；12 be hammering block；13
For anti-lost snap ring；14 be lower contact；15 be bit adapter；16 be six side's driving faces；17 be outer convex block, and 18 be spiral on outer convex block
Face；19 be interior convex block, and 20 be helicoid under interior convex block；21 be guide pad；22 be guide groove.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
It is provided by the embodiment of the utility model to rush screw drive axle assembly, comprising: shell mechanism and the biography being mounted in it
Motivation structure, axial impact mechanism and bit adapter 15, structure is referred to shown in Fig. 1；
Wherein, the outer wall of transmission mechanism is provided with outer convex block 17；
Axial impact mechanism includes block stamp 11 and elastic device；Block stamp 11 is sheathed on transmission mechanism, the inner wall tool of block stamp 11
There is interior convex block 19, outer convex block 17 can contact interior convex block 19 when transmission mechanism creeps into and turns round and raise block stamp 11；It needs to illustrate
, during the cycle movement of transmission mechanism drilling revolution, the outer convex block 17 of outer wall is contacting interior convex block 19 and is raising
After block stamp 11, interior convex block 19 is allowed to fall after rise downwards；Block stamp 11 is arranged above bit adapter 15, and block stamp 11 can move downward punching
Hit bit adapter 15；Elastic device can provide pretightning force directed downwardly for block stamp 11；
Shell mechanism includes block stamp shell 8, which has the movement of limitation block stamp 11 for along axial guiding knot
Structure.It is understood that " axial direction ", the direction position concept of "up" and "down" that this programme is mentioned are based on shell mechanism, pass
The structure and use state of motivation structure and bit adapter 15.
Working principle:
Load transfer process: bit adapter 15 is passed to by shell mechanism by articulated joint for screw drilling rod shell, and final
Pass to shaft bottom drill bit；
Torque and revolving speed transmittance process: drill bit is passed to by transmission mechanism by screw drilling tool motor rotor and universal shaft and is connect
First 15, and it is ultimately transferred to shaft bottom drill bit；
Axial impact: in drilling process, helicoid hydraulic motor drives transmission mechanism by universal shaft, thus in transmission mechanism and punching
Rotational speed difference is formed between hammer 11, so that interior convex block 19 of the outer convex block 17 of transmission mechanism in turning course with 11 inside of block stamp is sent out
Raw contact engagement (as shown in Figure 6 a)；After contact engagement occurs, a part of torque of transmission mechanism revolution is converted into promotion block stamp
11 thrusts being lifted up drive block stamp 11 to overcome elastic device pretightning force vertical along the guide frame of 8 inner wall of block stamp shell
It is lifted up；Under the action of interior convex block 19 is in outer convex block 17 after Top of Climb (as shown in Figure 6 b), the two is separated, punching
Hammer 11 accelerates vertical downward movement and drill hammer connector 15 is (as schemed in the case where being self-possessed and taking elastic device pretightning force synergy
Shown in 6c), the stress wave that impact process generates passes to shaft bottom drill bit by bit adapter 15, thus with bit pressure, torque, revolving speed
High-speed cutting and high-frequency percussion combined-breaking rock of the drill bit in shaft bottom are realized together.
It can be seen from the above technical scheme that the screw drive axle assembly provided by the embodiment of the utility model that spins,
It has the advantages and positive effects of:
1, the axial impact loading for the torque and revolving speed and itself generation that screw motor generates can be passed into well simultaneously
Subdrilling head, to realize drilling bit high-speed cutting and high-frequency percussion combined-breaking rock；
2, structure is simple, components are few, and tool disassembling, assembling and replacing is convenient；
It 3, can since the axial impact loading of generation is directly proportional to elastic device pretightning force and 11 hoisting depth of block stamp
To adjust elastic device pretightning force and 11 hoisting depth of block stamp obtain corresponding axial impact loading according to strata condition；
4, both interior convex blocks of the outer convex block of transmission mechanism and block stamp 11 contact action face is only used as opening vibration face, not as punching
Face is hit, occurs while bearing the stress condition that high frequency sound carries variation during the work time so as to avoid two components,
Effectively improve that components working life is short and reliability；
5, axial impact loading is generated using mechanical drive mode, can be carried out conversion, therefore whole nothing without mud fluid power
Obvious pressure consumption increases, and the screw motor working performance being connected with the utility model is effectively ensured.
Preferably, outer convex block 17 has helicoid 18 on outer convex block, interior convex block 19 has for spiral on outer convex block
Face 18 contacts helicoid 20 under the interior convex block for raising cooperation, and structure is referred to shown in Fig. 3 and Fig. 4, helicoid fit structure
It can guarantee that the two sufficiently engagement contact pushes promotion, the hand of spiral is crept into gyratory directions according to transmission mechanism and accordingly determined.?
Here, outer convex block 17 and interior convex block 19 can generally spiral bar blocks.
In order to advanced optimize above-mentioned technical solution, the quantity of outer convex block 17 be it is multiple, the quantity of interior convex block 19 be with
Outer convex block 17 is one-to-one multiple, to improve stressed effect.
In the present embodiment, multiple outer convex blocks 17 are uniformly distributed circumferentially, and corresponding interior convex block 19 is also circumferential equal along it
Even distribution makes block stamp 11 be pushed lifting force by uniform in the circumferential.
Specifically, elastic device is spring 9, effective elastic-restoring force can be provided in the axial direction.Correspondingly, spring 9
Top pressing plate 7 is installed.
Preferably, axial impact mechanism further includes the hammering block 12 being arranged between block stamp 11 and bit adapter 15, to hold
By the axial impact stress from block stamp 11 and pass to bit adapter 15.
In the present embodiment, transmission mechanism includes upper transmission shaft 5 and lower drive shaft 10, and outer convex block 17 is set to lower drive shaft
10 outer wall.Upper 5 upper end of transmission shaft is connected through a screw thread with the universal shaft of helicoid hydraulic motor and upper TC bearing inner race 1 respectively, lower end
It is connected through a screw thread with lower drive shaft 10.
Shell mechanism includes bearing case 3, center tap 6 and block stamp shell 8, and 6 upper and lower ends of center tap pass through screw thread respectively
It is connected with bearing case 3 and block stamp shell 8.
Specifically, guide frame includes the guide groove 22 for being provided with 8 inner wall of block stamp shell along axial direction, the outer wall tool of block stamp 11
There is the guide pad 21 cooperated with guide groove 22, structure is referred to shown in Fig. 4 and Fig. 5.Further, guide groove 22 and guiding
Block 21 can be multiple, and be evenly distributed.
It is provided by the embodiment of the utility model to rush screw drive axle assembly, it further include anti-lost snap ring 13 and lower contact 14,
Structure is referred to shown in Fig. 2 and Fig. 7；
Lower contact 14 is fixedly connected on block stamp shell 8,13 sets of anti-lost snap ring in 15 outside of bit adapter, anti-lost snap ring 13
Lower end surface can be affiliated in the upper surface of lower contact 14.During making a trip, bottom drill bit drives bit adapter 15 downwardly together
It stretches out, covers the anti-lost snap ring 13 in 15 outside of bit adapter and be affiliated on 14 upper surface of lower contact therewith, to limit bottom brill
Head and bit adapter 15 fall into shaft bottom.
In order to advanced optimize above-mentioned technical solution, outer convex block 17 is circumferentially discontinuous on the outer wall of transmission mechanism,
The interior convex block 19 of block stamp 11 can be axially movable to above and below outer convex block 17.So, 15 top of bit adapter
Hammering block 12 and block stamp 11 also be self-possessed and the effect of 9 pretightning force of spring under downlink so that the interior convex block 19 of the inside of block stamp 11 is located at
The downside of outer convex block 17 on lower drive shaft 10 and there are a fixed spacing, ensure that in 10 turning course of lower drive shaft, evagination
It will not be in contact engagement between block 17 and interior convex block 19, avoid the generation of block stamp 11 from pumping, so that playing prevents
Block stamp 11 continues generation axial impact and causes impact missing, further ensures the reliability of tool and avoids underground fish trouble
Occur.
This programme is described further combined with specific embodiments below:
The screw drive axle assembly as shown in Figure 1, one kind is spun is by upper TC bearing inner race 1, upper TC bearing outer ring 2, bearing
Shell 3, string bearing group 4, upper transmission shaft 5, center tap 6, pressing plate 7, block stamp shell 8, spring 9, lower drive shaft 10, block stamp 11, anvil
Son 12, anti-lost snap ring 13, lower contact 14, bit adapter 15 are constituted.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, the utility model one kind is spun screw drive axle assembly structure feature
Be: 6 upper and lower ends of center tap pass through screw thread respectively and are connected with bearing case 3 and block stamp shell 8；3 upper end of bearing case passes through spiral shell
Line is connected with articulated joint for screw drilling rod shell, and inside is sequentially arranged with TC bearing outer ring 2, upper TC bearing inner race 1, string from outside to inside
Bearing group 4 and upper transmission shaft 5, upper 5 upper end of transmission shaft pass through screw thread with the universal shaft of helicoid hydraulic motor and upper TC bearing inner race 1 respectively
Connection, lower end is connected through a screw thread with lower drive shaft 10；Hammering block 12, underdrive are sequentially arranged with inside block stamp shell 8 from the bottom to top
Axis 10, block stamp 11, spring 9 and pressing plate 7, the guide pad 21 on guide groove 22 and block stamp 11 on 8 inner wall of block stamp shell cooperate, under
End is connected through a screw thread with lower contact 14；Convex block in 11 inside of upper helicoid 18 and block stamp of the 10 outer convex block 17 in middle part of lower drive shaft
19 lower helicoid 20 cooperates；Cooperated by six side's driving faces 16 with lower drive shaft 10 on the inside of 15 upper end of bit adapter, outside upper end
Side is cased with anti-lost snap ring 13.
As shown in Figure 1, the utility model one kind is spun, screw drive axle assembly bit pressure, torque, revolving speed transmittance process are: boring
Pressure passes to a kind of bearing case 3 for the screw drive axle assembly that spins of the utility model by articulated joint for screw drilling rod shell, then
Center tap 6, block stamp shell 8 and hammering block 12 are passed sequentially through downwards, passes to bit adapter 15, and be ultimately transferred to shaft bottom drill bit.
Torque and revolving speed pass to a kind of screw drive axle assembly that spins of the utility model by screw drilling tool motor rotor and universal shaft
Upper transmission shaft 5, and then bit adapter 15 is passed to by lower drive shaft 10, and be ultimately transferred to shaft bottom drill bit.
As shown in Fig. 6 a, Fig. 6 b and Fig. 6 c, a kind of axial impact of screw drive axle assembly that spins of the utility model works
Principle is: in drilling process, helicoid hydraulic motor drives a kind of the upper of screw drive axle assembly of spinning of the utility model by universal shaft
Transmission shaft 5 turns round, and upper transmission shaft 5 drives lower drive shaft 10 to turn round by connection screw thread, thus in lower drive shaft 10 and block stamp 11
Between form rotational speed difference so that on the outer convex block at the middle part of lower drive shaft 10 helicoid 18 in turning course with 11 inside of block stamp
Helicoid 20 is in contact engagement (as shown in Figure 6 a) under interior convex block.After contact engagement occurs, one of the revolution of lower drive shaft 10
Divide torque to be converted into the thrust for pushing block stamp 11 to be lifted up, drives block stamp 11 along the guide groove 22 on 8 inner wall of block stamp shell
9 pretightning force of spring is overcome to be promoted straight up.After helicoid 20 rises to 18 highest point of helicoid on outer convex block under interior convex block
(as shown in Figure 6 b), the outer convex block 17 of lower drive shaft 10 are separated with the interior convex block 19 of block stamp 11, and block stamp 11 is in self weight and bullet
Under 9 pretightning force synergy of spring, accelerates vertical downward movement and impact hammering block 12 (as fig. 6 c), what impact process generated answers
Reeb passes to shaft bottom drill bit by hammering block 12 and bit adapter 15, to realize drill bit in well together with bit pressure, torque, revolving speed
The high-speed cutting at bottom and high-frequency percussion combined-breaking rock.
As shown in fig. 7, a kind of blank-run prevention principle of work and power for the screw drive axle assembly that spins of the utility model is: removing drill-through
Cheng Zhong, bottom drill bit drive bit adapter 15 to stretch out downwardly together, cover the anti-lost snap ring 13 in 15 outside of bit adapter and hang therewith
It leans against on 14 upper surface of lower contact, to limit bottom drill bit and bit adapter 15 falls into shaft bottom.The anvil on 15 top of bit adapter
Son 12 and block stamp 11 are also being self-possessed and downlink under the effect of 9 pretightning force of spring, so that the interior convex block 19 of 11 inside of block stamp passes under being located at
The downside of outer convex block 17 on moving axis 10 and there are a fixed spacing, ensure that in 10 turning course of lower drive shaft, outer convex block 17
It will not be in contact engagement between interior convex block 19, avoid the generation of block stamp 11 from pumping, so that playing prevents block stamp
11, which continue generation axial impact, causes impact missing, further ensures the reliability of tool and underground fish trouble is avoided to send out
It is raw.
It spins screw drive axle assembly in conclusion the utility model embodiment discloses one kind, it is by bearing case, string
Bearing group, center tap, block stamp shell, upper transmission shaft, lower drive shaft, spring, block stamp, hammering block, anti-lost snap ring, lower contact, drill bit
The composition such as connector, it is characterized in that existing rotational speed difference forces spiral shell on the outer convex block in the middle part of lower drive shaft between lower drive shaft and block stamp
Radial facing is in contact with helicoid under the interior convex block on the inside of block stamp in turning course and engages, the part torque of lower drive shaft revolution
Be converted into and push the thrust that is lifted up of block stamp, drive guide groove of the block stamp on block stamp outer casing inner wall overcome initial tension of spring to
Upper promotion, when helicoid rises to the latter two separation of helicoid highest point on outer convex block under interior convex block, block stamp is in self weight and spring
Under pretightning force effect, moves downward and impact hammering block formation shock loading, bit adapter carries bit pressure, torque, revolving speed and impact
Lotus passes to drill bit, realizes high-speed cutting and high-frequency percussion combined-breaking rock, improves drill bit efficiency of breaking rock.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest scope consistent with features of novelty.
Claims (10)
- The screw drive axle assembly 1. one kind is spun characterized by comprising shell mechanism and the transmission mechanism being mounted in it, Axial impact mechanism and bit adapter (15)；The outer wall of the transmission mechanism is provided with outer convex block (17)；The axial impact mechanism includes block stamp (11) and elastic device；The block stamp (11) is sheathed on the transmission mechanism, institute The inner wall for stating block stamp (11) has interior convex block (19), and the outer convex block (17) can contact when the transmission mechanism creeps into and turns round The interior convex block (19) simultaneously raises the block stamp (11)；The block stamp (11) can move downward the impact bit adapter (15)；The elastic device can provide pretightning force directed downwardly for the block stamp (11)；The shell mechanism includes block stamp shell (8), and the block stamp shell (8), which has, limits block stamp (11) movement as along axis To guide frame.
- 2. the screw drive axle assembly according to claim 1 that spins, which is characterized in that the outer convex block (17) has evagination Helicoid (18) on block, the interior convex block (19) have for raising the interior of cooperation with helicoid (18) contact on the outer convex block Helicoid (20) under convex block.
- 3. the screw drive axle assembly according to claim 1 that spins, which is characterized in that the quantity of the outer convex block (17) is Multiple, the quantity of the interior convex block (19) is one-to-one multiple with the outer convex block (17).
- 4. the screw drive axle assembly according to claim 3 that spins, which is characterized in that multiple outer convex blocks (17) are along week To being uniformly distributed.
- 5. the screw drive axle assembly according to claim 1 that spins, which is characterized in that the elastic device is spring (9).
- 6. the screw drive axle assembly according to claim 1 that spins, which is characterized in that the axial impact mechanism further includes The hammering block (12) being arranged between the block stamp (11) and the bit adapter (15).
- 7. the screw drive axle assembly according to claim 1 that spins, which is characterized in that the transmission mechanism includes upper transmission Axis (5) and lower drive shaft (10), the outer convex block (17) are set to the outer wall of the lower drive shaft (10).
- 8. the screw drive axle assembly according to claim 1 that spins, which is characterized in that the guide frame includes along axial direction It is provided with the guide groove (22) of block stamp shell (8) inner wall, the outer wall of the block stamp (11) has and the guide groove (22) The guide pad (21) of cooperation.
- 9. the screw drive axle assembly according to claim 1 that spins, which is characterized in that further include anti-lost snap ring (13) and under Connector (14)；The lower contact (14) is fixedly connected on the block stamp shell (8), and the anti-lost snap ring (13) covers in the bit adapter (15) outside, the lower end surface of the anti-lost snap ring (13) can be affiliated in the upper surface of the lower contact (14).
- 10. the screw drive axle assembly according to claim 1 that spins, which is characterized in that the outer convex block (17) is described Circumferentially discontinuous on the outer wall of transmission mechanism, the interior convex block (19) of the block stamp (11) can be axially movable to the evagination Above and below block (17).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821137198.8U CN208734274U (en) | 2018-07-17 | 2018-07-17 | One kind is spun screw drive axle assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821137198.8U CN208734274U (en) | 2018-07-17 | 2018-07-17 | One kind is spun screw drive axle assembly |
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| CN208734274U true CN208734274U (en) | 2019-04-12 |
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| CN201821137198.8U Active CN208734274U (en) | 2018-07-17 | 2018-07-17 | One kind is spun screw drive axle assembly |
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| CN112983255A (en) * | 2019-12-16 | 2021-06-18 | 中国石油化工股份有限公司 | Drilling tool and method for determining parameters thereof |
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