CN113669001A - Novel oil field drilling carousel transmission case - Google Patents
Novel oil field drilling carousel transmission case Download PDFInfo
- Publication number
- CN113669001A CN113669001A CN202110987733.9A CN202110987733A CN113669001A CN 113669001 A CN113669001 A CN 113669001A CN 202110987733 A CN202110987733 A CN 202110987733A CN 113669001 A CN113669001 A CN 113669001A
- Authority
- CN
- China
- Prior art keywords
- output shaft
- transmission case
- brake
- rotary table
- disc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 49
- 230000005540 biological transmission Effects 0.000 title claims abstract description 47
- 238000001816 cooling Methods 0.000 claims description 43
- 238000009434 installation Methods 0.000 claims description 9
- 238000005096 rolling process Methods 0.000 claims description 3
- 230000009347 mechanical transmission Effects 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 21
- 238000004891 communication Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B3/00—Rotary drilling
- E21B3/02—Surface drives for rotary drilling
- E21B3/04—Rotary tables
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention provides a novel oil field drilling rotary table transmission case, which comprises: an output shaft; the brake disc connecting sleeve is arranged on one side of the output shaft; and the other side of the brake disc connecting sleeve is fixedly provided with an output shaft universal joint connecting disc through a bolt. The invention provides a novel oil field drilling turntable transmission case, wherein a disc type device is adopted for brake braking, the braking torque is adjustable, the disc type device is directly arranged on a brake disc connecting sleeve at the rear end of an output shaft, the braking torque transmission path is shortened, and the mechanical transmission efficiency is improved.
Description
Technical Field
The invention relates to the field of oilfield drilling, in particular to a novel oilfield drilling rotary table transmission case.
Background
Truck-mounted drilling rigs are a relatively new form of loading for drilling machinery that integrate the main drilling equipment with the drilling tools, usually on board, to perform the drilling operation.
Most of oil exploitation places are located in plateau, desert, wetland, marsh and water surface areas, and due to the reason of geographical environment, the places require an input shaft mechanism and an output shaft mechanism of a rotary table transmission box of a truck-mounted drilling machine to be located in different boxes to realize power transmission, and if the input shaft mechanism and the output shaft mechanism adopt a split-box design, the oil liquid tightness of the rotary table transmission box is difficult to guarantee.
Still what adopt at present is that the tradition all lies in the carousel transmission case with input shaft mechanism and output shaft mechanism in same side box, but adopts traditional carousel angle gear case to exploit, and brake braking torque size can't be adjusted, has reduced mechanical transmission efficiency.
Therefore, there is a need to provide a new type of rotary transmission case for oilfield drilling to solve the above technical problems.
Disclosure of Invention
The invention provides a novel oil field drilling turntable transmission case, which solves the problems that the size of brake braking torque cannot be adjusted and the mechanical transmission efficiency is reduced.
In order to solve the technical problem, the invention provides a novel oil field drilling rotary table transmission case, which comprises: an output shaft;
the brake disc connecting sleeve is arranged on one side of the output shaft; the other side of the brake disc connecting sleeve is fixedly provided with an output shaft universal joint connecting disc through a bolt;
the brake device fixing support seat is fixedly arranged on the other side of the output shaft universal joint connecting disc;
the brake block sliding device, the brake block sliding device set up in the top of rolling disc connecting sleeve surface, the inside of brake block sliding device is provided with pneumatic brake disc, pneumatic brake disc's both sides all are provided with the brake friction block, one side of brake block sliding device is provided with brake block sliding device gas bag.
Preferably, the top of the output shaft is in threaded engagement with the input shaft through an arc bevel gear.
Preferably, the top of the input shaft is provided with an input chain wheel.
Preferably, a disc clutch device is arranged on the top of the input chain wheel.
Preferably, the outer surface of the output shaft is provided with a cooling shell, and the bottom of the cooling shell is fixedly provided with a base.
Preferably, a cooling cavity is arranged inside the cooling shell, and a cooling pipe is arranged on the inner surface of the cooling cavity.
Preferably, a heat conduction plate is fixedly connected to the outer surface of the cooling pipe.
Preferably, the other side of the heat conducting plate is provided with a heat radiating block.
Preferably, the outer surface cover of output shaft is equipped with the connecting pipe, the equal fixed mounting in top and the bottom of output shaft surface has dismounting device, the front of output shaft top and bottom all is provided with sets up the groove, the top and the bottom of connecting pipe surface all are provided with the intercommunication groove, the inside fixed mounting that sets up the groove has first spring, the top fixedly connected with bullet piece of first spring.
Preferably, the dismounting device includes the fixed block, the inside of fixed block is provided with the installation cavity, the middle fixed mounting of installation cavity inner chamber bottom has the slide bar, the surface cover of slide bar is equipped with the carriage release lever, the top fixedly connected with second spring of carriage release lever, one side of installation cavity is provided with the shifting chute.
Compared with the prior art, the novel oil field drilling rotary table transmission case provided by the invention has the following beneficial effects:
the invention provides a novel oil field drilling turntable transmission case, wherein a disc type device is adopted for brake braking, the braking torque is adjustable, the disc type device is directly arranged on a brake disc connecting sleeve at the rear end of an output shaft, the braking torque transmission path is shortened, and the mechanical transmission efficiency is improved.
Drawings
FIG. 1 is a schematic structural diagram of a first embodiment of a novel oilfield drilling rotary table transmission case provided by the invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a schematic structural diagram of a second embodiment of a novel oilfield drilling rotary table transmission case provided by the invention;
FIG. 4 is a schematic view of the internal structure of the cooling jacket shown in FIG. 3;
FIG. 5 is a schematic structural diagram of a third embodiment of a novel oilfield drilling rotary table transmission case provided by the invention;
FIG. 6 is a cross-sectional view of the connecting tube shown in FIG. 5;
fig. 7 is a schematic structural view of the dismounting device shown in fig. 6.
Reference numbers in the figures: 1. the output shaft, 2, the input shaft, 3, the input sprocket, 4, the disk clutch device, 5, the brake disc connecting sleeve, 6, the brake friction block, 7, the brake block sliding device, 8, the brake block sliding device air bag, 9, the brake device fixing and supporting seat, 10, the output shaft universal joint connecting disc, 11, the pneumatic brake disc, 12, the injection hole, 13, the cooling shell, 14, the base, 15, the cooling box, 16, the cooling pipe, 17, the heat conducting plate, 18, the radiating block, 19, the connecting pipe, 20, the dismounting device, 201, the fixed block, 202, the mounting cavity, 203, the sliding rod, 204, the second spring, 205, the moving rod, 206, the moving groove, 21, the setting groove, 22, the first spring, 23, the elastic block, 24 and the communicating groove.
Detailed Description
The invention is further described with reference to the following figures and embodiments.
Referring to fig. 1 and fig. 2 in combination, wherein fig. 1 is a schematic structural diagram of a first embodiment of a novel oilfield drilling rotary table transmission case provided by the present invention; fig. 2 is an enlarged schematic view of a portion a shown in fig. 1. A novel oilfield drilling carousel gearbox, comprising: an output shaft 1;
the brake disc connecting sleeve 5 is arranged on one side of the output shaft 1; the other side of the brake disc connecting sleeve 5 is fixedly provided with an output shaft universal joint connecting disc 10 through a bolt;
the brake device fixing support seat 9 is fixedly arranged on the other side of the output shaft universal joint connecting plate 10, and the universal joint connecting plate 10 is fixedly arranged on the brake device fixing support seat 9;
brake block displacement device 7, brake block displacement device 7 set up in the top of 5 surfaces of rolling disc connecting sleeve, brake block displacement device 7's inside is provided with pneumatic brake disc 11, pneumatic brake disc 11's both sides all are provided with brake friction block 6, one side of brake block displacement device 7 is provided with brake block displacement device gas bag 8.
The top of the output shaft 1 is engaged with an input shaft 2 through arc bevel gear threads.
An inner gear ring is arranged in the disc type clutch device 4, the inner gear ring drives the gear on the surface of the input shaft 2 to rotate through the meshing of gear blocks, and the gear on the surface of the input shaft 2 drives the input shaft 2 to rotate through a flat key.
The input shaft 2 is meshed through the arc bevel gear in the gear box to drive the output shaft 1 to rotate, and the shifting fork drives through the push-pull handle, so that the spline sleeve of the output shaft 1 slides left and right, and the forward rotation and the reverse rotation of the output shaft 1 are realized.
An input chain wheel 3 is arranged at the top of the input shaft 2.
The front surface of the input shaft 2 is provided with an oil filling hole 12 for adding lubricating oil to the inside.
The input sprocket 3 starts to rotate by the outer surface chain.
The top of the input chain wheel 3 is provided with a disc clutch device 4.
The outer surface of the disc clutch device 4 is provided with an outer gear ring.
The input chain wheel 3 is driven by the chain to start rotating, so that the outer gear ring of the disc type clutch device 4 is driven to rotate.
In the disc type clutch device 4, the air bag is adopted to replace the traditional cylinder piston to push the friction plate to clutch, so that the production and installation process is simplified, and the processing difficulty is reduced.
And under the inflation condition, the air bag swells, each friction plate arranged on the outer surface is extruded, the friction plates are tightened, the outer gear ring drives the inner gear ring to rotate, and if the air bag is in a non-inflation state, the inner gear ring cannot rotate.
The outer surface of the output shaft 1 is provided with a cooling shell 13, and the bottom of the cooling shell 13 is fixedly provided with a base 14.
The cooling shell 13 is provided with a cooling cavity 15 inside, and the inner surface of the cooling cavity 15 is provided with a cooling pipe 16.
A heat conducting plate 17 is fixedly connected to the outer surface of the cooling pipe 16.
The other side of the heat conducting plate 17 is provided with a heat dissipating block 18.
The working principle of the novel oil field drilling turntable transmission case provided by the invention is as follows:
firstly, under the drive of a chain, the input chain wheel 3 starts to rotate, so as to drive the outer gear ring of the disc type clutch device 4 to rotate, and then, under the inflation condition, the air bag arranged in the disc type clutch device 4 inflates, so that each friction plate in the disc type clutch device 4 is pushed to tighten, the outer gear ring drives the inner gear ring to rotate, and if the air bag is in a non-inflation state, the inner gear ring cannot rotate.
The inner gear ring drives the surface gear of the input shaft 2 to rotate through tooth meshing, the surface gear of the input shaft 2 drives the input shaft 2 to rotate through a flat key, and then the input shaft 2 drives the output shaft 1 to rotate through the threaded meshing of the arc bevel gear in the gear box.
And, through the push-and-pull handle, the shift fork drives for output shaft 1 spline housing slides from side to side, thereby realizes output shaft 1's normal and reverse rotation.
A connecting sleeve 5 with an additional pneumatic disc type brake device is arranged at the right outer end of the output shaft 1, a universal joint connecting disc 10 is arranged at the right end of the connecting sleeve 5, and power of the input chain wheel 3 is transmitted to a large rotary disc of a well mouth through a universal joint, so that the rotary disc is rotated.
Compared with the prior art, the novel oil field drilling rotary table transmission case provided by the invention has the following beneficial effects:
the invention provides a novel oil field drilling rotary table transmission case, wherein a disc type device is adopted for brake braking, the braking torque is adjustable, the disc type device is directly arranged on a brake disc connecting sleeve 5 at the rear end of an output shaft 1, the transmission path of the braking torque is shortened, and the mechanical transmission efficiency is improved.
Second embodiment
Referring to fig. 3 and 4 in combination, a second embodiment of the present application provides another novel oilfield drilling rotary table transmission case based on the novel oilfield drilling rotary table transmission case provided by the first embodiment of the present application. The second embodiment is only the preferred mode of the first embodiment, and the implementation of the second embodiment does not affect the implementation of the first embodiment alone.
Specifically, the difference that the novel oil field well drilling carousel transmission case that the second embodiment of this application provided lies in, a novel oil field well drilling carousel transmission case, the surface of output shaft 1 is provided with cooling shell 13, the bottom fixed mounting of cooling shell 13 has base 14.
The cooling shell 13 is provided with a cooling cavity 15 inside, and the inner surface of the cooling cavity 15 is provided with a cooling pipe 16.
The cooling pipe 16 is provided on the surface inside the cooling case 13.
A heat conducting plate 17 is fixedly connected to the outer surface of the cooling pipe 16.
The heat conducting plate 17 is formed in a plate shape to be attached to the cooling chamber 15, and has a large contact area with the cooling chamber 15, thereby rapidly transferring a large amount of heat.
The other side of the heat conducting plate 17 is provided with a heat dissipating block 18.
The radiating block 18 is provided in plurality and is connected to the surface of the gear box, so that internal heat can be quickly absorbed.
The working principle of the novel oil field drilling turntable transmission case provided by the invention is as follows:
when the cooling device works, firstly, cooling liquid is added into the cooling cavity 15 in the cooling shell 13 through the connecting port, when the output shaft 1 starts to rotate, heat emitted by the high-speed movement of the internal output shaft 1, the gears and other parts is absorbed by the radiating block 18, and the heat is quickly conducted into the cooling cavity 15 by the heat conducting plate 17 and absorbed by condensate to reduce the temperature.
Compared with the prior art, the novel oil field drilling rotary table transmission case provided by the invention has the following beneficial effects:
the invention provides a novel oil field drilling rotary table transmission case, wherein a cooling shell 13 is arranged on the outer surface of a gear case of an output shaft 1, when the output shaft 1 rotates for a long time and heat generated by gear friction can wear and consume gears and the output shaft, a heat dissipation block 18 in the cooling shell 13 conducts hot gas away and transmits the hot gas into a cooling cavity 15, so that the heat on the surface of the output shaft 1 is reduced, the output shaft 1 can work for a long time and is not easy to wear, and the loss of internal parts is reduced.
Third embodiment
Referring to fig. 5, fig. 6 and fig. 7, a third embodiment of the present application provides another novel oilfield drilling rotary table transmission case based on the novel oilfield drilling rotary table transmission case provided by the first embodiment of the present application. The third embodiment is only the preferable mode of the first embodiment, and the implementation of the third embodiment does not affect the implementation of the first embodiment alone.
Specifically, the third embodiment of this application provides a novel oil field well drilling carousel transmission case's difference lies in, a novel oil field well drilling carousel transmission case, the surface cover of output shaft 1 is equipped with connecting pipe 19, the equal fixed mounting in top and the bottom of output shaft 1 surface has dismounting device 20, the front of output shaft 1 top and bottom all is provided with sets up groove 21, the top and the bottom of connecting pipe 19 surface all are provided with intercommunication groove 24, the inside fixed mounting that sets up groove 21 has first spring 21, first spring 21's top fixedly connected with bullet piece 23.
The opposite surfaces of the elastic block 23 and the first spring 21 are arranged in an arc shape, when the first spring 22 is not subjected to external force, the elastic block 23 is carried to extend out of the arrangement groove 21, and a worker can extrude the elastic block 23 back into the arrangement groove 21 in use.
The diameter of connecting pipe 19 just overlaps the cover and establishes the surface at output shaft 1, and setting groove 21 and intercommunication groove 24 all are provided with two, respectively at the top and the bottom of connecting pipe 19 surface, and the two distributes relatively, can coincide each other and be in the same place, and the length and width of the two is unanimous, and bullet piece 23 can receive the elasticity bullet of first spring 22 from setting groove 21 and advance intercommunication groove 24, restricts connecting pipe 19 on the surface of output shaft 1.
Dismounting device 20 includes fixed block 201, the inside of fixed block 201 is provided with installation cavity 202, the middle fixed mounting of installation cavity 202 inner chamber bottom has slide bar 203, the surface cover of slide bar 203 is equipped with carriage release lever 205, the top fixedly connected with second spring 204 of carriage release lever 205, one side of installation cavity 202 is provided with shifting chute 206.
The fixing block 201 is shaped like a folder, and the bottom end is connected to the output shaft 1 to form a surface for blocking the forward movement of the connection pipe 19, and the setting groove 21 and the communication groove 24 are opposed when the connection pipe 19 moves to the surface of the fixing block 201.
The other end of the fixed block 210 is larger, the moving rod 205 capable of moving up and down along the sliding rod 203 is arranged in the fixed block, the moving rod 205 is in an inverted L shape, the section extending downwards extends out of the fixed block 201, the elastic block 23 can be extruded back into the communicating groove 24, and the other end of the moving rod 205 extends out of the outer side of the fixed block 201.
The left side of the moving groove 206 is communicated with the mounting cavity 202, and the right side is connected with the outer surface of the right side of the fixing block 201, so that a user can conveniently push the moving rod 205 downwards.
The working principle of the novel oil field drilling turntable transmission case provided by the invention is as follows:
when the connecting device works, the elastic block 23 is firstly extruded into the arrangement groove 21, then the connecting pipe 19 is sleeved on the outer surface of the output shaft, the communication groove 24 is aligned with the arrangement groove 21, the elastic block 23 in the arrangement groove 21 is not extruded by external force, the first spring 22 drives the elastic block 23 to be ejected outwards, the elastic block 23 is ejected into the communication groove 24, and the connecting pipe 19 is limited.
When the connecting pipe 19 needs to be detached, the moving rod 205 slides along the moving groove 206 in the direction of the output shaft 1, the moving rod 205 slides on the surface of the sliding rod 203 and presses the second spring 204, the moving rod 205 moves into the communication groove 24 towards one end of the output shaft 1, the elastic block 23 is pressed back into the setting groove 21 from the communication groove 24, and the connecting pipe 19 can be removed from the surface of the output shaft 1.
Compared with the prior art, the novel oil field drilling rotary table transmission case provided by the invention has the following beneficial effects:
the invention provides a novel oil field drilling turntable transmission case, wherein an elastic block 23 and a dismounting device 20 are arranged on the outer surface of an output shaft 1, the elastic block 23 is embedded into a connecting pipe 19 under the elastic force of a first spring 22, the connecting pipe 19 is limited on the outer surface of the output shaft 1, the limiting connection between the connecting pipe 19 and the output shaft 1 is convenient, the connecting speed is high, the elastic block 23 is dismounted from a communicating groove 24 through the dismounting device 20, the connecting pipe 19 is quickly dismounted, the threaded connection mode of a fixed flange is changed, tools are not needed during dismounting, the dismounting and mounting speeds are high, and convenience is brought to a user.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A novel oil field drilling carousel transmission case which characterized in that includes: an output shaft;
the brake disc connecting sleeve is arranged on one side of the output shaft; the other side of the brake disc connecting sleeve is fixedly provided with an output shaft universal joint connecting disc through a bolt;
the brake device fixing support seat is fixedly arranged on the other side of the output shaft universal joint connecting disc;
the brake block sliding device, the brake block sliding device set up in the top of rolling disc connecting sleeve surface, the inside of brake block sliding device is provided with pneumatic brake disc, pneumatic brake disc's both sides all are provided with the brake friction block, one side of brake block sliding device is provided with brake block sliding device gas bag.
2. The novel oilfield drilling rotary table transmission case of claim 1, wherein the top of the output shaft is threadedly engaged with the input shaft through an arc bevel gear.
3. The new oilfield drilling carousel as defined in claim 2, wherein the input sprocket is disposed on top of the input shaft.
4. The novel oilfield drilling turntable transmission case of claim 3, wherein the top of the input sprocket is provided with a disc clutch device.
5. The novel oilfield drilling rotary table transmission case according to claim 1, wherein a cooling shell is arranged on the outer surface of the output shaft, and a base is fixedly mounted at the bottom of the cooling shell.
6. The novel oilfield drilling rotary table transmission case according to claim 5, wherein a cooling cavity is arranged inside the cooling shell, and a cooling pipe is arranged on the inner surface of the cooling cavity.
7. The novel oilfield drilling rotary table transmission case according to claim 6, wherein a heat conducting plate is fixedly connected to the outer surface of the cooling pipe.
8. The novel oilfield drilling rotary table transmission case according to claim 7, wherein the other side of the heat conducting plate is provided with a heat dissipating block.
9. The novel oilfield drilling rotary table transmission case according to claim 1, wherein the outer surface of the output shaft is sleeved with a connecting pipe, the top and the bottom of the outer surface of the output shaft are both fixedly provided with a dismounting device, the front surfaces of the top and the bottom of the output shaft are both provided with a setting groove, the top and the bottom of the outer surface of the connecting pipe are both provided with a communicating groove, a first spring is fixedly arranged inside the setting groove, and a spring block is fixedly connected to the top end of the first spring.
10. The novel oilfield drilling rotary table transmission case according to claim 9, wherein the dismounting device comprises a fixed block, an installation cavity is arranged inside the fixed block, a sliding rod is fixedly installed in the middle of the bottom of an inner cavity of the installation cavity, a moving rod is sleeved on the outer surface of the sliding rod, a second spring is fixedly connected to the top end of the moving rod, and a moving groove is formed in one side of the installation cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110987733.9A CN113669001A (en) | 2021-08-26 | 2021-08-26 | Novel oil field drilling carousel transmission case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110987733.9A CN113669001A (en) | 2021-08-26 | 2021-08-26 | Novel oil field drilling carousel transmission case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113669001A true CN113669001A (en) | 2021-11-19 |
Family
ID=78546601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110987733.9A Pending CN113669001A (en) | 2021-08-26 | 2021-08-26 | Novel oil field drilling carousel transmission case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113669001A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115929240A (en) * | 2023-02-21 | 2023-04-07 | 中国华西工程设计建设有限公司 | Tunnel rock drilling sampling device |
-
2021
- 2021-08-26 CN CN202110987733.9A patent/CN113669001A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115929240A (en) * | 2023-02-21 | 2023-04-07 | 中国华西工程设计建设有限公司 | Tunnel rock drilling sampling device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113669001A (en) | Novel oil field drilling carousel transmission case | |
| CN101435493A (en) | Gear engaging drive stepless speed changer | |
| CN217400814U (en) | Novel oil field drilling carousel transmission case | |
| CN204185165U (en) | Shaft drive fast reserve strand grinding machine | |
| CN116292662B (en) | Push rod type clutch assembly | |
| CN201827350U (en) | Energy-saving mechanical driving box | |
| CN101517258B (en) | Mechanical torque converter | |
| US2924985A (en) | Flexible coupling v-drive | |
| CN207830476U (en) | Hydraulic clutch positive and negative rotation differential transmission assembly | |
| CN110735918A (en) | automatic gearbox gear shifting device and gear shifting control method thereof | |
| CN106476979B (en) | Bicycle double-wheel driving device capable of realizing quick start | |
| CN113108031B (en) | Gearbox for engineering machinery and loader | |
| CN115479112A (en) | Planetary gear reducer capable of shifting | |
| CN209145479U (en) | It is a kind of for hard rock and the modularization drilling machine of superhard rock | |
| CN205047770U (en) | Energy -conserving variable -speed motor of lever | |
| CN113389858B (en) | Planetary gear transmission | |
| CN101520081B (en) | Automatic directional driving mechanism | |
| KR101378665B1 (en) | Driving device for multi-plate clutch of the vehicle | |
| KR20120077500A (en) | Clutch actuator for vehicle | |
| CN111022518A (en) | Power reversing wet clutch for tractor | |
| CN211259418U (en) | Power reversing wet clutch for tractor | |
| CN217056248U (en) | Air compressor machine transfer case with from lock type hydraulic clutch | |
| CN202560968U (en) | Clutching and reversing device | |
| CN112576209B (en) | Rear clamping assembly of drilling machine | |
| CN212775514U (en) | Transfer case flange gearshift for mine car |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |