CN211343701U - Structure for preventing shaft from scaling and resisting axial impact - Google Patents
Structure for preventing shaft from scaling and resisting axial impact Download PDFInfo
- Publication number
- CN211343701U CN211343701U CN201922417633.3U CN201922417633U CN211343701U CN 211343701 U CN211343701 U CN 211343701U CN 201922417633 U CN201922417633 U CN 201922417633U CN 211343701 U CN211343701 U CN 211343701U
- Authority
- CN
- China
- Prior art keywords
- transmission shaft
- bearing
- shaft
- connecting pipe
- axial impact
- 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.)
- Active
Links
Images
Landscapes
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model discloses a structure for preventing shaft scaling and resisting axial impact, which comprises a transmission shaft (1), wherein a connecting pipe (2) is sleeved outside the transmission shaft (1); a pair of bearings (3) is arranged between the connecting pipe (2) and the transmission shaft (1); the bearing (3) is internally provided with a group of sand discharge grooves (4) which are uniformly distributed along the circumference. The utility model discloses a connecting pipe offsets the big impulsive force of axial, and the radial impact force is offset to the bearing, and is not fragile, can satisfy the big impact load effect of instrument well descending in-process. The method is also suitable for structural arrangement of other downhole instruments.
Description
Technical Field
The utility model relates to a prevent axle scale deposit and anti axial impact's structure belongs to instrument structure technical field in the pit.
Background
The shaft is generally supported and limited by a bearing, needs to work in a better sealing environment and a proper amount of lubricating environment, and has standard requirements on installation space. The instrument used in the oil field test is generally in a nonstandard design, the supporting structure of the transmission shaft of the oil field test is generally sealed inside the instrument by adopting a sealing piece, but the supporting structure is exposed outside and is easily blocked or even damaged due to the chemical action of a corrosive substance in a large-load impact, an oil-water mixture, the filling of silt and the influence of surface scaling for a long time, and huge workload is brought to product maintenance. Conventional, standard bearing support methods are not suitable for downhole use environments. Therefore, the prior art is still deficient and needs further improvement.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a prevent axle scale deposit and anti axial shock's structure to solve current support mode shock intolerance, corrosion-resistant, be afraid of sand and be afraid of the problem of scale deposit, thereby overcome prior art's not enough.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model discloses a structure for preventing shaft scaling and resisting axial impact, which comprises a transmission shaft, wherein a connecting pipe is sleeved outside the transmission shaft; a pair of bearings is arranged between the connecting pipe and the transmission shaft; the bearing inner ring is provided with a group of sand discharge grooves which are uniformly distributed along the circumference.
In the structure, the bearing is a single-ring sliding bearing made of corrosion-resistant and wear-resistant materials; the sand discharge groove is a rectangular groove, and the setting direction of the sand discharge groove is axial.
In the structure, two ends of the transmission shaft are respectively provided with a driving groove; the left end of the transmission shaft is provided with a nut, and the nut is in threaded connection with the transmission shaft; the nut is connected with the transmission shaft in a positioning way through a positioning pin.
In the structure, a gap is formed between the right end face of the nut and the left end face of the transmission shaft.
In the structure, one end of the excircle of the transmission shaft is provided with a bearing shaft shoulder.
In the structure, the inner circle of the connecting pipe is provided with a bearing boss.
Due to the adoption of the technical scheme, compared with the prior art, the transmission shaft of the utility model is fixed on the connecting pipe through the nut, and the transmission shaft can axially move within a small range and also can rotate; the nut is fixed on the transmission shaft by adopting a positioning pin, so that the nut is prevented from loosening caused by rotation and impact; the bearing is arranged at two ends of the connecting pipe, and the inner cylindrical surface of the bearing is provided with a sand discharge groove; the sand discharging mode can be realized by that water flow passes through the sand discharging groove and the sand discharging hole to wash and discharge the sand in the process of sand scale extrusion or instrument movement; the bearing is made of tin bronze or other corrosion-resistant and wear-resistant materials; the bearing and the transmission shaft are in clearance fit, and the single-side fit clearance is (0.01-0.082) mm; the utility model discloses a connecting pipe offsets the big impulsive force of axial, and the radial impact force is offset to the bearing, and is not fragile, can satisfy the big impact load effect of instrument well descending in-process.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a front view of FIG. 1;
fig. 3 is a schematic structural view of the bearing of the present invention;
FIG. 4 is a schematic structural view of the transmission shaft of the present invention
Fig. 5 is a schematic structural diagram of the connecting pipe of the present invention.
The labels in the figures are: 1-transmission shaft, 2-connecting pipe, 3-bearing, 4-sand-discharging groove, 5-driving groove, 6-nut, 7-positioning pin, 8-bearing shaft shoulder and 9-bearing boss.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
The utility model is formed according to the following method for preventing shaft scaling and resisting axial impact, as shown in figures 1-5, the method is that a connecting pipe 2 is arranged outside a transmission shaft 1, a bearing 3 is arranged between the inner circle of the connecting pipe 2 and the outer circle of the transmission shaft 1, the outer circle of the bearing 3 is in interference fit with the connecting pipe 2, and the inner circle of the bearing 3 is in clearance fit with the transmission shaft 1; and set up a set of husky groove 4 of arranging in the bearing 3 inner circle, scrape the husky and dirt of transmission shaft 1 excircle into husky groove 4 of arranging through husky groove 4 edge of arranging, the rivers that rethread through husky groove 4 of arranging will scrape husky and dirt in husky groove 4 of arranging and discharge from bearing 3 one end. The bearing 3 is a single-ring sliding bearing and is made of corrosion-resistant and wear-resistant materials; the fit clearance between the inner circle of the bearing and the transmission shaft is 0.01-0.082 mm. A bearing boss 9 is arranged on the inner circle of the connecting pipe 2, and axial impact force is transmitted through the bearing boss 9 and a bearing shaft shoulder 8 on the outer circle of the transmission shaft 1; the axial impact force is dissolved through a gap between the nut 6 arranged at the left end of the transmission shaft 1 and the left end surface of the transmission shaft 1, so that the shaft transmission shaft 1 is prevented from bearing the axial impact. The nut 6 is provided with a positioning groove, and the positioning pin 7 arranged at the positioning groove is fixedly connected with the transmission shaft 1 to prevent the nut 6 from rotating or loosening due to axial impact.
The structure of the utility model, which is constructed according to the above method and is used for the above method, for preventing shaft scaling and resisting axial impact, as shown in fig. 1-5, the structure comprises a transmission shaft 1, a connecting pipe 2 is sleeved outside the transmission shaft 1; a pair of bearings 3 is arranged between the connecting pipe 2 and the transmission shaft 1; as shown in figure 3, a group of sand discharge grooves 4 which are uniformly distributed along the circumference are arranged on the inner ring of the bearing 3. The bearing 3 is a single-ring sliding bearing made of corrosion-resistant and wear-resistant materials; the sand discharge groove 4 is a rectangular groove, and the sand discharge groove 4 is arranged in the axial direction. The transmission shaft is shown in fig. 4, and both ends of the transmission shaft 1 are respectively provided with a driving groove 5; one end of the excircle of the transmission shaft 1 is provided with a bearing shaft shoulder 8. The left end of the transmission shaft 1 is provided with a nut 6, and the nut 6 is in threaded connection with the transmission shaft 1; the nut 6 is connected with the transmission shaft 1 in a positioning way through a positioning pin 7. A gap is arranged between the right end surface of the nut 6 and the left end surface of the transmission shaft 1. The connecting pipe is shown in fig. 5, and a bearing boss 9 is arranged on the inner circle of the connecting pipe 2.
The working process and principle of the utility model
As shown in fig. 1 to 5, a bearing 3 is arranged in the connecting pipe 2, the bearing 3 is made of tin bronze or other corrosion-resistant and wear-resistant materials, and four sand discharge grooves 4 are formed in the bearing 3 and are circumferentially and uniformly distributed; the connecting pipe 2 can also be provided with a sand discharge hole. The end face of the transmission shaft 1 is provided with a driving groove 5 for transmitting rotary power, the transmission shaft 1 penetrates through the connecting pipe 2, one end of the transmission shaft 1 is limited by the nut 2 to move axially, and the nut 6 is fixed on the transmission shaft 1 by the positioning pin 7 to prevent the nut 6 from loosening. The connecting pipe 2 is provided with threads and can be connected with a test instrument, and the two ends of the transmission shaft 1 are provided with driving grooves 5 and can be connected with the test instrument.
When the transmission shaft 1 is impacted by a large leftward axial force, the axial force is dissolved by the collision of the bearing shaft shoulder 8 on the transmission shaft 1 and the bearing boss end face of the inner circle of the connecting pipe 2, so that the bearing 3 is prevented from being stressed. When the rotating power is transmitted to the transmission shaft 1 through the driving groove 5, the transmission shaft 1 starts to rotate and drives the test instrument connected with the transmission shaft 1 to rotate together, and at the moment, the bearing 3 plays a role of rotating support. The contact surface of the bearing 3 and the transmission shaft 1 is provided with a sand discharge groove 4, when sand or scale exists at the contact part, the sand and the scale are scraped into the groove through the sand discharge groove 4, and then the sand and the scale are discharged from one end of the bearing 3 in an extruding mode.
The utility model discloses a connecting pipe offsets the big impulsive force of axial, and the radial impact force is offset to the bearing, and is not fragile, can satisfy the big impact load effect of instrument well descending in-process. The method is also suitable for structural arrangement of other downhole instruments.
Claims (6)
1. A structure for preventing shaft fouling and resisting axial impact, comprising a transmission shaft (1), characterized in that: the transmission shaft (1) is sleeved with a connecting pipe (2); a pair of bearings (3) is arranged between the connecting pipe (2) and the transmission shaft (1); the bearing (3) is internally provided with a group of sand discharge grooves (4) which are uniformly distributed along the circumference.
2. The structure for preventing fouling of a shaft and resisting axial impact as set forth in claim 1, wherein: the bearing (3) is a single-ring sliding bearing made of corrosion-resistant and wear-resistant materials; the sand discharge groove (4) is a rectangular groove, and the sand discharge groove (4) is arranged in the axial direction.
3. The structure for preventing fouling of a shaft and resisting axial impact as set forth in claim 1, wherein: two ends of the transmission shaft (1) are respectively provided with a driving groove (5); a nut (6) is arranged at the left end of the transmission shaft (1), and the nut (6) is in threaded connection with the transmission shaft (1); the nut (6) is connected with the transmission shaft (1) in a positioning way through a positioning pin (7).
4. The structure for preventing fouling of a shaft and resisting axial impact as set forth in claim 3, wherein: and a gap is arranged between the right end face of the nut (6) and the left end face of the transmission shaft (1).
5. The structure for preventing fouling of a shaft and resisting axial impact as set forth in claim 1, wherein: and a bearing shaft shoulder (8) is arranged at one end of the excircle of the transmission shaft (1).
6. The structure for preventing fouling of a shaft and resisting axial impact as set forth in claim 1, wherein: and a bearing boss (9) is arranged on the inner circle of the connecting pipe (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922417633.3U CN211343701U (en) | 2019-12-27 | 2019-12-27 | Structure for preventing shaft from scaling and resisting axial impact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922417633.3U CN211343701U (en) | 2019-12-27 | 2019-12-27 | Structure for preventing shaft from scaling and resisting axial impact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211343701U true CN211343701U (en) | 2020-08-25 |
Family
ID=72096278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922417633.3U Active CN211343701U (en) | 2019-12-27 | 2019-12-27 | Structure for preventing shaft from scaling and resisting axial impact |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211343701U (en) |
-
2019
- 2019-12-27 CN CN201922417633.3U patent/CN211343701U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101804905B (en) | Support roller | |
| CN211343701U (en) | Structure for preventing shaft from scaling and resisting axial impact | |
| CN103352706B (en) | Method for designing center bigeminal hobs of heading machine | |
| CN203770192U (en) | Anti-scouring and anti-corrosion mechanical sealing device | |
| CN110985530A (en) | Method and structure for preventing shaft scaling and resisting axial impact | |
| CN210410875U (en) | Cone crusher with high stability transmission system | |
| CN204739221U (en) | Mixer shaft end sealing device | |
| CN108302281B (en) | Pipeline robot driving device | |
| CN207621046U (en) | Long shaft submerged pump | |
| CN206708370U (en) | A kind of belt mud dewatering equipment roller bearing sealing structure | |
| CN202125520U (en) | Sliding bearing for open mill | |
| CN205937458U (en) | Double turntable bearing with footpath ball | |
| CN211647972U (en) | Rotary joint for horizontal directional drilling machine and horizontal directional drilling machine | |
| WO2021196320A1 (en) | Closed side-mounted machine walking wheel | |
| CN211288213U (en) | Slurry pump annular sleeve seal | |
| CN211924742U (en) | Corrosion resistant car axle sleeve of easy dismouting | |
| CN211288444U (en) | Curing equipment magnet axle sleeve device | |
| CN205618165U (en) | Shaft drilling machine cutting -tool with real -time supervision cutter rotational speed function | |
| CN210423724U (en) | Split type sleeved spiral mechanical sealing device | |
| CN216199475U (en) | Oil cylinder sealing device | |
| CN201849915U (en) | Detachable carrier roller with bearing | |
| CN204852020U (en) | It is double with footpath ball turntable bearing | |
| CN211678034U (en) | Ball mill capable of preventing oil liquid pollution at feed end | |
| CN211778036U (en) | Middle open type centrifugal pump | |
| CN104226183B (en) | A kind of central shaft rotating equipment bearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |