CN115434632A - Oil seal transmission shaft combined transmission assembly for screw drill - Google Patents
Oil seal transmission shaft combined transmission assembly for screw drill Download PDFInfo
- Publication number
- CN115434632A CN115434632A CN202211157026.8A CN202211157026A CN115434632A CN 115434632 A CN115434632 A CN 115434632A CN 202211157026 A CN202211157026 A CN 202211157026A CN 115434632 A CN115434632 A CN 115434632A
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- Prior art keywords
- connecting seat
- transmission shaft
- assembly
- limiting
- bearing
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 102
- 238000005553 drilling Methods 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims description 12
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000000750 progressive effect Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 1
- 239000012535 impurity Substances 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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/003—Bearing, sealing, lubricating details
-
- 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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/006—Mechanical motion converting means, e.g. reduction gearings
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- 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 relates to the technical field of transmission shafts, in particular to an oil-sealed transmission shaft combined transmission assembly for a screw drilling tool, which comprises a transmission shaft body, a connecting rod, a bearing and a connecting assembly, wherein the connecting assembly comprises a first connecting seat, a second connecting seat, a connecting block, a connecting piece and a fixing component, the first connecting seat is provided with a connecting groove, the bearing is firstly installed on the connecting rod, the connecting block is aligned and inserted into the connecting groove, the second connecting seat is inserted into the inner side of the first connecting seat, then the connecting piece is rotated, the connecting block is rotated to the other side of the connecting groove, the second connecting seat is clamped on the first connecting seat, and finally the connection of the first connecting seat and the second connecting seat is reinforced through the fixing component to complete the connection and installation work of the first connecting seat and the second connecting seat, so that the connection of more bolts is replaced, and the efficiency of maintaining the transmission shaft by connecting and installing or disassembling the first connecting seat and the second connecting seat is improved.
Description
Technical Field
The invention relates to the technical field of transmission shafts, in particular to an oil seal transmission shaft combined transmission assembly for a screw drilling tool.
Background
The screw drilling tool is one of the widely used underground power drilling tools, the transmission shaft assembly is one of the most key parts of the screw drilling tool, the transmission shaft assembly mainly comprises a transmission shaft body, a transmission shaft shell, a radial bearing and other parts, but when the transmission shaft of the screw drilling tool is used, the shell of the transmission shaft cannot be disassembled and is fixedly connected with the transmission shaft body of the transmission shaft, so that the transmission shaft is inconvenient to inspect and maintain, when the inside of the transmission shaft is damaged, the transmission shaft body and the shell of the transmission shaft can only be disassembled and replaced together, the operation cost of the screw drilling tool is improved, and the maintenance of the transmission shaft is not facilitated.
In chinese patent document CN214886891U, a protection device for a transmission shaft assembly of a screw drill is disclosed, wherein when the protection device is used, a housing is mounted on the outer side of a transmission shaft body of the transmission shaft, the housing can be disassembled, a connecting piece and a bearing transmission shaft body are fixedly connected through a first connecting seat and a second connecting seat through bolts, and when the first connecting seat and the second connecting seat are disassembled, the housing can be disassembled, so that the transmission shaft can be conveniently checked and maintained.
However, in the using process of the transmission assembly, the second connecting seat is directly inserted into the first connecting seat when the first connecting seat and the second connecting seat are connected and installed, and the first connecting seat and the second connecting seat are fixedly connected through a plurality of bolts, and the connection stability of the first connecting seat and the second connecting seat is improved to a certain extent by using more bolts for fixing, so that the operation steps of connecting and fixing the first connecting seat and the second connecting seat or disassembling the first connecting seat and the second connecting seat are increased, and the efficiency of connecting, installing or disassembling the first connecting seat and the second connecting seat to maintain the transmission shaft is reduced.
Disclosure of Invention
The invention aims to provide an oil seal transmission shaft combined transmission assembly for a screw drilling tool, which solves the problem that in the use process of the existing transmission assembly, because the second connecting seat is directly inserted into the first connecting seat and is connected and fixed through a plurality of bolts when the first connecting seat and the second connecting seat are connected and installed, the connection stability of the first connecting seat and the second connecting seat is improved to a certain extent by using a plurality of bolts for fixing, but the operation steps of connecting, fixing or disassembling and maintaining the first connecting seat and the second connecting seat are increased, and the efficiency of maintaining the transmission shaft when the first connecting seat and the second connecting seat are connected, installed or disassembled is reduced.
In order to achieve the purpose, the invention provides an oil seal transmission shaft combined transmission assembly for a screw drill, which comprises a transmission shaft body, a connecting rod and a bearing, wherein the connecting rod is fixedly connected with the transmission shaft body and is positioned at the side end of the transmission shaft body, the bearing is rotatably connected with the connecting rod and is positioned at the outer side of the connecting rod,
also comprises a connecting component which is connected with the connecting component,
coupling assembling includes first connecting seat, second connecting seat, connecting block, connection piece and fixed component, first connecting seat with bearing fixed connection, first connecting seat has the spread groove, the spread groove is located the lateral part of first connecting seat, the second connecting seat with first connecting seat dismantles the connection, and is located the inboard of first connecting seat, the connecting block with second connecting seat fixed connection, and with the spread groove cooperatees, the connection piece with second connecting seat fixed connection, and be located the second connecting seat is kept away from one side of first connecting seat, fixed component is used for right fix between first connecting seat and the second connecting seat.
The first connecting seat is also provided with a first through hole, and the first through hole penetrates through the first connecting seat; the second connecting seat is provided with a second through hole which penetrates through the second connecting seat.
The fixing component comprises a hexagon bolt, a hexagon nut and a limiting part, and the hexagon bolt is inserted into the first through hole; the hexagon nut is detachably connected with the hexagon bolt and is positioned on one side of the hexagon bolt close to the first connecting seat; the limiting component is used for limiting the hexagonal nut to rotate.
The limiting part comprises a limiting ring and a mounting rod, and the limiting ring is sleeved on the outer side of the hexagon nut; the mounting rod is used for fixing the limiting ring on the first connecting seat.
The limiting component further comprises a limiting spring, and the limiting spring is sleeved on the outer side of the mounting rod and is located between the mounting rod and the first connecting seat.
The oil seal transmission shaft combined transmission assembly for the screw drilling tool further comprises a dustproof component, the dustproof component comprises a shell and a telescopic pipe, and the shell is arranged on the outer side of the transmission shaft body; the telescopic pipe is fixedly connected with the outer shell and is positioned at the side end of the outer shell.
The dustproof assembly further comprises a sealing ring, the sealing ring is fixedly connected with the bearing, and the outer side of the bearing is sleeved with the sealing ring.
According to the oil seal transmission shaft combined transmission assembly for the screw drilling tool, firstly, the bearing is installed on the connecting rod, the connecting block is aligned and inserted into the connecting groove, the second connecting seat is inserted into the inner side of the first connecting seat, then the connecting piece is rotated, the connecting block is rotated to the other side of the connecting groove, the second connecting seat is clamped on the first connecting seat, and finally the connection between the first connecting seat and the second connecting seat is reinforced through the fixing component, so that the connection and installation work of the first connecting seat and the second connecting seat is completed, more bolts are used for connection, and the efficiency of maintaining the transmission shaft during connection, installation or detachment between the first connecting seat and the second connecting seat is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
Fig. 1 is an exploded view of an oil seal driveshaft assembly for a progressive cavity drill according to a first embodiment of the present invention.
Fig. 2 is a schematic view showing the connection of the mounting bar and the check spring according to the first embodiment of the present invention.
Fig. 3 is a schematic structural view of an oil seal transmission shaft assembly transmission assembly for a screw drill according to a second embodiment of the present invention.
Fig. 4 is a cross-sectional view of a housing of a second embodiment of the invention.
Fig. 5 is a schematic structural view of an oil seal transmission shaft assembly transmission assembly for a screw drill according to a third embodiment of the present invention.
Fig. 6 is a schematic view showing the connection of the housing and the filter net according to the third embodiment of the present invention.
In the figure: 100-transmission shaft body, 101-connecting rod, 102-bearing, 103-first connecting seat, 104-connecting groove, 105-second connecting seat, 106-connecting block, 107-connecting piece, 108-first through hole, 109-second through hole, 110-hexagon bolt, 111-hexagon nut, 112-limiting ring, 113-mounting rod, 114-limiting spring, 215-shell, 216-telescopic pipe, 217-sealing ring, 318-oil hole, 319-filter screen and 320-cock.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, and the embodiments described below with reference to the accompanying drawings are exemplary and intended to be illustrative of the present invention and should not be construed as limiting the present invention.
The first embodiment:
referring to fig. 1 and 2, fig. 1 is an exploded view of an oil seal transmission shaft assembly transmission assembly for a screw drill according to a first embodiment of the present invention, and fig. 2 is a schematic connection diagram of a mounting rod and a limiting spring according to the first embodiment of the present invention.
The invention provides an oil seal transmission shaft combined transmission assembly for a screw drill, which comprises the following components in part by weight: including transmission shaft body 100, connecting rod 101, bearing 102 and coupling assembling, coupling assembling includes first connecting seat 103, second connecting seat 105, connecting block 106, connection piece 107 and fixed component, first connecting seat 103 has connecting groove 104 and first through-hole 108, second connecting seat 105 has second through-hole 109, the fixed component includes hex bolts 110, hex nuts 111 and spacing part, spacing part includes spacing ring 112, installation pole 113 and spacing spring 114. Through the scheme, the transmission assembly recorded in the background art is used, because the second connecting seat is directly inserted into the first connecting seat when the first connecting seat and the second connecting seat are connected and installed, and the first connecting seat and the second connecting seat are connected and fixed through a plurality of bolts, the connection stability of the first connecting seat and the second connecting seat is improved to a certain extent through more bolts, the operation steps of connecting and fixing the first connecting seat and the second connecting seat or disassembling maintenance are increased, the problem of the efficiency of connecting, installing or disassembling the first connecting seat and the second connecting seat to maintain the transmission shaft is solved, and meanwhile, the scheme can replace the scene that more bolts are used for connecting and fixing the first connecting seat and the second connecting seat, and can be used for loosening nuts for a long time, so that the problem of fixing failure is solved.
For the present embodiment, the transmission shaft includes a transmission shaft body 100, a connecting rod 101, and a bearing 102, where the connecting rod 101 is fixedly connected to the transmission shaft body 100 and is located at a side end of the transmission shaft body 100, and the bearing 102 is rotatably connected to the connecting rod 101 and is located at an outer side of the connecting rod 101. The connecting rod 101 is installed at two side ends of the transmission shaft body 100, the bearing 102 is installed on the connecting rod 101, and the transmission shaft body 100 can rotate when being limited by the bearing 102 and the connecting rod 101, so that the practicability of the transmission shaft body 100 is improved.
The first connecting seat 103 is fixedly connected to the bearing 102, the connecting groove 104 is located on a side of the first connecting seat 103, the second connecting seat 105 is detachably connected to the first connecting seat 103 and is located on an inner side of the first connecting seat 103, the connecting block 106 is fixedly connected to the second connecting seat 105 and is matched with the connecting groove 104, the connecting piece 107 is fixedly connected to the second connecting seat 105 and is located on a side of the second connecting seat 105 far away from the first connecting seat 103, and the fixing member is used for fixing the first connecting seat 103 and the second connecting seat 105. The first connecting seat 103 is fixed on one side of the bearing 102 far away from the transmission shaft body 100, two connecting grooves 104 are arranged on the first connecting seat 103, the two connecting grooves 104 are symmetrical about the central line of the first connecting seat 103, the connecting grooves 104 are L-shaped, the second connecting seat 105 is inserted into the inner side of the first connecting seat 103, two connecting blocks 106 and two connecting blocks 106 are fixed on the outer side of the second connecting seat 105, the connecting blocks 106 are symmetrical about the central line of the second connecting seat 105, the connecting blocks 106 are matched with the connecting grooves 104, the second connecting seat 105 is fixedly connected onto the first connecting seat 103 through a fixing component, the connecting piece 107 is fixed on one side of the second connecting seat 105 far away from the first connecting seat 103, and the connecting piece 107 is connected with a drilling tool conveniently.
Secondly, the first connecting seat 103 further has a first through hole 108, and the first through hole 108 penetrates through the first connecting seat 103; the second connecting seat 105 has a second through hole 109, and the second through hole 109 penetrates the second connecting seat 105; the hexagon bolt 110 is inserted into the first through hole 108; the hexagon nut 111 is detachably connected with the hexagon bolt 110 and is positioned on one side of the hexagon bolt 110 close to the first connecting seat 103; the limiting member is used for limiting the rotation of the hexagon nut 111. The first through hole 108 and the second through hole 109 have the same diameter, when the first through hole 108 is aligned with the second through hole 109, the hexagon bolt 110 is inserted into the through hole, and the second connecting seat 105 is fixed on the first connecting seat 103 by the cooperation of the hexagon nut 111 and the hexagon bolt 110, and the limiting member is used for limiting the rotation of the hexagon nut 111, so as to avoid the fixing failure of the second connecting seat 105 and the first connecting seat 103.
Meanwhile, the limiting ring 112 is sleeved on the outer side of the hexagonal nut 111; the mounting rod 113 is used for fixing the limiting ring 112 on the first connecting seat 103; the limiting spring 114 is sleeved outside the mounting rod 113 and is located between the mounting rod 113 and the first connecting seat 103. Spacing ring 112 cover is established the outside of hex nut 111, the inboard spacing groove of spacing ring 112 with the appearance of hex nut 111 is identical, installation pole 113 be used for with spacing ring 112 is fixed the outside of hex nut 111, installation pole 113 with first connecting seat 103 threaded connection, the outside cover of installation pole 113 is equipped with spacing spring 114, through spacing spring 114 deformation is right installation pole 113 produces the effort, makes installation pole 113 with first connecting seat 103's connection is inseparabler.
When the oil-sealed transmission shaft combined transmission assembly for the screw drill in the embodiment is used, the bearing 102 is firstly installed on the connecting rod 101, the connecting block 106 is aligned and inserted into the connecting groove 104, so that the second connecting seat 105 is inserted into the inner side of the first connecting seat 103, then the connecting sheet 107 is rotated, the connecting block 106 is rotated to the other side of the connecting groove 104, at this time, the second through hole 109 is aligned with the first through hole 108, the hexagonal bolt 110 is inserted into the through hole and the hexagonal nut 111 is screwed onto the hexagonal bolt 110, so that the second connecting seat 105 is fixed on the first connecting seat 103, then the installing rod 113 is screwed onto the first connecting seat 103, so that the limiting ring 112 is sleeved on the outer side of the hexagonal nut 111, the hexagonal nut 111 is limited by the limiting ring 112, the hexagonal nut 111 is prevented from being rotated when the transmission shaft is used, so that the second connecting seat 105 and the first connecting seat 103 are prevented from being loosened, an acting force is generated by the limiting spring 114, so that the installing rod 113 and the first connecting seat 103 are connected together, and the second connecting seat 103 are used for improving the efficiency when the installing and the second connecting seat 103 are used, and the second connecting seat 105 are used, and the connecting seat 103, and the installing structure are used for replacing the first connecting seat 105, and the second connecting seat 105.
Second embodiment:
referring to fig. 3 and 4 on the basis of the first embodiment, fig. 3 is a schematic structural diagram of an oil seal transmission shaft assembly transmission assembly for a screw drill according to a second embodiment of the present invention, and fig. 4 is a sectional view of a housing according to the second embodiment of the present invention.
The invention provides an oil seal transmission shaft combined transmission assembly for a screw drill, which further comprises a dustproof component, wherein the dustproof component comprises a shell 215, an extension pipe 216 and a sealing ring 217.
For the present embodiment, the housing 215 is disposed outside the transmission shaft body 100; the telescopic pipe 216 is fixedly connected with the outer shell 215 and is positioned at the side end of the outer shell 215; the sealing ring 217 is fixedly connected with the bearing 102 and sleeved outside the bearing 102. The outer shell 215 is installed on the outer side of the transmission shaft body 100, the telescopic tube 216 is fixed on both ends of the outer shell 215, the telescopic tube 216 can be squeezed and contracted and stretched, and the sealing ring 217 is fixed on the outer side of the bearing 102.
When the oil seal transmission shaft combined transmission assembly for the screw drilling tool is used, the shell 215 is used for protecting the transmission shaft body 100, the extension pipe 216 is arranged between the transmission shaft body 100 and the connecting piece 107, when the second connecting seat 105 is connected to the first connecting seat 103, the extension pipe 216 is extruded, the transmission shaft body 100 is covered by the extension pipe 216, the transmission shaft body 100 is prevented from entering dust, meanwhile, the sealing performance of the shell 215 can be improved through the sealing ring 217, the dust in the shell 215 is avoided, and the transmission shaft body 100 is convenient to maintain.
The third embodiment:
referring to fig. 5 and 6 on the basis of the second embodiment, fig. 5 is a schematic structural view of an oil seal transmission shaft assembly transmission assembly for a screw drill according to a third embodiment of the present invention, and fig. 6 is a schematic connection view of a housing and a filter screen according to the third embodiment of the present invention.
The invention provides an oil seal transmission shaft combined transmission assembly for a screw drill, which further comprises a lubricating component, wherein the lubricating component comprises a filter screen 319 and a cock 320, and the shell 215 is provided with an oil filling hole 318.
For this embodiment, the oil filler hole 318 is located on the housing 215 and communicates with the interior of the housing 215; the filter screen 319 is fixedly connected with the shell 215 and is positioned in the oil hole 318; the cock 320 is detachably coupled to the housing 215 and is positioned above the filter net 319. The oil filling hole 318 is arranged on the shell 215, the filter screen 319 is installed in the oil filling hole 318, and the cock 320 is used for sealing the oil filling hole 318.
When the oil seal transmission shaft combined transmission assembly for the screw drill is used, the bearing 102 and the transmission shaft body 100 are filled with oil through the oil filling hole 318 by opening the cock 320, so that the oil enters the surface of the transmission shaft body 100 and the bearing 102, the transmission shaft body 100 is prevented from being stuck in use, and meanwhile, the injected oil is filtered through the filter screen 319, so that external impurities are prevented from entering the shell 215 and affecting the normal operation of the transmission shaft body 100.
While the above disclosure describes one or more preferred embodiments of the present invention, it is not intended to limit the scope of the claims to such embodiments, and one skilled in the art will understand that all or a portion of the processes performed in the above embodiments may be practiced without departing from the spirit and scope of the claims.
Claims (7)
1. An oil seal transmission shaft combined transmission assembly for a screw drilling tool comprises a transmission shaft body, a connecting rod and a bearing, wherein the connecting rod is fixedly connected with the transmission shaft body and is positioned at the side end of the transmission shaft body, the bearing is rotatably connected with the connecting rod and is positioned at the outer side of the connecting rod,
also comprises a connecting component which is connected with the connecting component,
coupling assembling includes first connecting seat, second connecting seat, connecting block, connection piece and fixed component, first connecting seat with bearing fixed connection, first connecting seat has the spread groove, the spread groove is located the lateral part of first connecting seat, the second connecting seat with first connecting seat dismantles the connection, and is located the inboard of first connecting seat, the connecting block with second connecting seat fixed connection, and with the spread groove cooperatees, the connection piece with second connecting seat fixed connection, and be located the second connecting seat is kept away from one side of first connecting seat, fixed component is used for right fix between first connecting seat and the second connecting seat.
2. The oil sealed drive shaft assembly of claim 1, wherein,
the first connecting seat is also provided with a first through hole which penetrates through the first connecting seat; the second connecting seat is provided with a second through hole, and the second through hole penetrates through the second connecting seat.
3. The oil sealed drive shaft assembly of claim 2, wherein,
the fixing component comprises a hexagon bolt, a hexagon nut and a limiting part, and the hexagon bolt is inserted in the first through hole; the hexagon nut is detachably connected with the hexagon bolt and is positioned on one side of the hexagon bolt close to the first connecting seat; the limiting component is used for limiting the hexagonal nut to rotate.
4. The oil sealed drive shaft assembly drive assembly for a progressive cavity drill of claim 3,
the limiting part comprises a limiting ring and a mounting rod, and the limiting ring is sleeved on the outer side of the hexagonal nut; the mounting rod is used for fixing the limiting ring on the first connecting seat.
5. The oil sealed driveshaft assembly for a progressive cavity drill of claim 4, wherein,
the limiting component further comprises a limiting spring, and the limiting spring is sleeved on the outer side of the mounting rod and is located between the mounting rod and the first connecting seat.
6. The oil seal transmission shaft assembly transmission assembly for the screw drill according to claim 1,
the oil seal transmission shaft combined transmission assembly for the screw drilling tool further comprises a dustproof component, the dustproof component comprises a shell and a telescopic pipe, and the shell is arranged on the outer side of the transmission shaft body; the telescopic pipe is fixedly connected with the shell and is positioned at the side end of the shell.
7. The oil sealed drive shaft assembly drive assembly for a progressive cavity drill of claim 6,
the dustproof assembly further comprises a sealing ring, and the sealing ring is fixedly connected with the bearing and sleeved with the outer side of the bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211157026.8A CN115434632A (en) | 2022-09-21 | 2022-09-21 | Oil seal transmission shaft combined transmission assembly for screw drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211157026.8A CN115434632A (en) | 2022-09-21 | 2022-09-21 | Oil seal transmission shaft combined transmission assembly for screw drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115434632A true CN115434632A (en) | 2022-12-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211157026.8A Pending CN115434632A (en) | 2022-09-21 | 2022-09-21 | Oil seal transmission shaft combined transmission assembly for screw drill |
Country Status (1)
| Country | Link |
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| CN (1) | CN115434632A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN204005111U (en) * | 2014-06-23 | 2014-12-10 | 何国煜 | A kind of extending foot that is applied to tripod |
| CN104908941A (en) * | 2015-05-19 | 2015-09-16 | 北京航空航天大学 | Rotor wing distance adjusting structure of helicopter test bed and upper rotor wing assembly |
| CN105040911A (en) * | 2015-07-03 | 2015-11-11 | 天津鑫坤泰预应力专业技术有限公司 | Anchor backing plate utilizing clamp slot to fix reducer union |
| CN107263399A (en) * | 2017-07-06 | 2017-10-20 | 江苏永昊高强度螺栓有限公司 | Pulling force regulating bolt |
| CN210266217U (en) * | 2019-06-12 | 2020-04-07 | 浙江大经建设集团股份有限公司 | Novel flexible waterproof sleeve |
| CN212900247U (en) * | 2020-08-03 | 2021-04-06 | 广州市美素力营养品有限公司 | Milk powder vacuum pipeline conveying device |
| CN214886891U (en) * | 2021-06-24 | 2021-11-26 | 胜利油田渤海管具有限责任公司 | Screw drill transmission shaft assembly protection device |
| DE202022102990U1 (en) * | 2021-11-17 | 2022-06-21 | Huaneng Yimin Coal Power Co., Ltd | Engine bearing sealing device for use in a dusty environment |
-
2022
- 2022-09-21 CN CN202211157026.8A patent/CN115434632A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204005111U (en) * | 2014-06-23 | 2014-12-10 | 何国煜 | A kind of extending foot that is applied to tripod |
| CN104908941A (en) * | 2015-05-19 | 2015-09-16 | 北京航空航天大学 | Rotor wing distance adjusting structure of helicopter test bed and upper rotor wing assembly |
| CN105040911A (en) * | 2015-07-03 | 2015-11-11 | 天津鑫坤泰预应力专业技术有限公司 | Anchor backing plate utilizing clamp slot to fix reducer union |
| CN107263399A (en) * | 2017-07-06 | 2017-10-20 | 江苏永昊高强度螺栓有限公司 | Pulling force regulating bolt |
| CN210266217U (en) * | 2019-06-12 | 2020-04-07 | 浙江大经建设集团股份有限公司 | Novel flexible waterproof sleeve |
| CN212900247U (en) * | 2020-08-03 | 2021-04-06 | 广州市美素力营养品有限公司 | Milk powder vacuum pipeline conveying device |
| CN214886891U (en) * | 2021-06-24 | 2021-11-26 | 胜利油田渤海管具有限责任公司 | Screw drill transmission shaft assembly protection device |
| DE202022102990U1 (en) * | 2021-11-17 | 2022-06-21 | Huaneng Yimin Coal Power Co., Ltd | Engine bearing sealing device for use in a dusty environment |
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