CN107505136B - Underground bearing vibration experimental device - Google Patents
Underground bearing vibration experimental device Download PDFInfo
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- CN107505136B CN107505136B CN201710810793.7A CN201710810793A CN107505136B CN 107505136 B CN107505136 B CN 107505136B CN 201710810793 A CN201710810793 A CN 201710810793A CN 107505136 B CN107505136 B CN 107505136B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
- G01M13/045—Acoustic or vibration analysis
Abstract
The invention discloses an underground bearing vibration experiment device which comprises a vibrating table, a rotary output table, a drill rod, a bearing support cylinder, a support sliding table clamp and a vibrating table clamp, wherein the vibrating table clamp is arranged on a vibrating table top; one end of the drill rod is fixed on the table top of the vibrating table through the vibrating table clamp, and the other end of the drill rod penetrates through the supporting sliding clamp to be connected with the bearing supporting cylinder. The downhole bearing vibration experimental device can realize the simulation of downhole rotating vibration operation environment, comprises a power motor upper vibration source, the relative motion of an inner ring and an outer ring of a bearing group and the simulation of a hole bottom operation surface, has the functions of providing rotation and simulating hole bottom friction cutting and vibration transmission, can provide simulation conditions for the vibration test of a hole bottom tool, is used for testing the vibration characteristics of a downhole bearing, and provides reference basis for the optimal design of the bearing group and a bottom drilling tool assembly.
Description
Technical Field
The invention relates to the field of drilling and drilling tool experiments, in particular to an underground bearing vibration experiment device.
Background
The bearing is one of key components of the power drilling tool under the hole, and is subjected to severe working conditions such as rotary friction, vibration, impact and the like during drilling, so that the bearing is easy to fail, and the reliability and the service life of the bearing are important points for restricting the development of the power drilling tool under the hole. Because of foreign technical blockade, no complete set of specifications exists in China for underground bearings, the process performance of the underground bearings is not fully known, the specific performance and parameters of the underground bearings are still to be determined, and the performance characteristics and the use condition range of the underground bearings are required to be thoroughly searched from various aspects.
Vibration has been the key condition in power drill operation, and research has been advanced in the research of the effect of vibration on screw thread and drill bit blade failure, but the effect of vibration on bearing failure has yet to be studied. Currently, studies on vibration are generally performed on the scale of the whole drilling tool, and analysis is not performed on the vibration characteristics of the bearing of the power drilling tool alone.
Disclosure of Invention
In view of the above-mentioned drawbacks and deficiencies of the prior art, an object of the present invention is to provide an experimental apparatus capable of simulating vibrations of a downhole bearing.
The invention aims at realizing the following technical scheme:
the underground bearing vibration experiment device comprises a vibration table, a rotary output table, a drill rod, a bearing support cylinder, a support sliding table clamp and a vibration table clamp, wherein the vibration table clamp is arranged on a vibration table top, and the support sliding table clamp is arranged on a support sliding table top; the bearing support cylinder comprises a coupler, a rotary outer cylinder, a plurality of torque transmission bolts, a bearing group fixing cylinder, a drill bit, a support shaft, a drill bit reducer sleeve and a conversion joint; one end of the rotary outer cylinder is connected with a bearing end cover, the coupler is connected to the bearing end cover, a cylinder cavity at one end of the rotary outer cylinder, which is close to the bearing end cover, is a rock sample cavity, a circle of threaded holes are formed in the cavity wall of the rock sample cavity along the circumferential direction, and a rock sample fastening bolt is matched with each threaded hole; the drill bit is arranged in the rotary outer cylinder, and the end part of the drill bit faces towards the rock sample cavity; the bearing set fixing cylinder is arranged at the other end of the rotary outer cylinder, the bearing is arranged in the bearing set fixing cylinder, the outer ring of the bearing is fixedly supported by the bearing set fixing cylinder, the inner ring of the bearing is fixedly sleeved on the supporting shaft, one end of the supporting shaft is connected with the drill bit through the drill bit reducing sleeve, and the other end of the supporting shaft is fixedly connected with the adapter; a plurality of torque transmission bolts are inserted into the rotary outer cylinder along the radial direction of the rotary outer cylinder at the position of the rotary outer cylinder corresponding to the bearing group fixing cylinder, and the end parts of the torque transmission bolts are propped against the bearing group fixing cylinder; one end of the drill rod is fixed on the table top of the vibrating table through the vibrating table clamp, and the other end of the drill rod penetrates through the supporting sliding table clamp to be connected with the adapter.
Preferably, the vibrating table clamp comprises a base, a drill rod joint, an adjusting moving block and an adjusting pressing block, wherein the drill rod joint is fixedly arranged on one surface of the adjusting moving block, and an inclined surface is arranged on the surface opposite to the surface of the adjusting moving block; the base is provided with a stop block, the adjusting moving block is arranged on the base, and the inclined plane of the adjusting moving block faces the stop block; one surface of the adjusting pressing block is in sliding fit with the stop block, and the other surface of the adjusting pressing block is provided with a chute in sliding fit with the inclined surface of the adjusting moving block; two key holes are formed in the top surface of the adjusting pressing block, the two key holes are respectively positioned on two sides of the chute, a fixing bolt is arranged in each key hole, the bottom end of the fixing bolt is fixedly connected with the base, and an adjusting nut is connected with a screw rod protruding out of the key hole in a threaded manner; the two sides of the adjusting moving block are also provided with fixing bolts, the other ends of the fixing bolts penetrate through the stop blocks, and one ends of the fixing bolts penetrating through the stop blocks are connected with adjusting nuts in a threaded mode.
Preferably, the supporting slipway clamp comprises a base, a clamping plate and a cushion block; the base passes through bolt fixed mounting on supporting the slip table mesa, the cushion is placed and is formed a clamping structure in the middle of two splint, clamping structure places on the base, all is provided with the dog and carries out spacingly around the centre gripping framework.
Preferably, a plurality of key grooves are milled on the outer wall of the bearing group fixing barrel, the number of the key grooves corresponds to the number of the torque transmission bolts, and the trend of the key grooves is the same as the axial direction of the bearing group fixing barrel.
Preferably, hexagonal slotted nuts are welded at positions, corresponding to the positions, where the torque transmission bolts are arranged, of the rotary outer cylinder, and the torque transmission bolts are inserted into the rotary outer cylinder after being screwed into the hexagonal slotted nuts.
Preferably, the torque transmission bolts are uniformly and annularly inserted into the rotary outer cylinder along the circumferential direction of the rotary outer cylinder, one side of the rotary outer cylinder corresponding to the insertion holes of the torque transmission bolts is also provided with at least one circle of standby holes, the connecting line between the standby holes and the corresponding insertion holes is parallel to the axis of the rotary outer cylinder, and each corresponding standby hole is welded with a hexagonal slotted nut.
Preferably, the device further comprises a fixed cushion block, wherein the fixed cushion block is placed on the adjusting press block, the fixed cushion block is provided with holes corresponding to the positions of the two key holes, and a screw rod protruding the key holes penetrates through the holes in the fixed cushion block to be in threaded connection with the adjusting nut; the surface of the stop block facing the adjusting moving block is also an inclined surface, and the surface of the adjusting moving block, which is in sliding fit with the stop block, is also provided with a chute.
Preferably, the rotary outer cylinder is provided with a plurality of positioning bolts, the positioning bolts are inserted from the positions corresponding to the drill bit reducing sleeves, and the positioning bolts are uniformly distributed in a ring shape along the circumferential direction of the rotary outer wall.
Preferably, the rotary outer cylinder further comprises a standby inserting hole which is positioned at one side of a circle of positioning bolt inserting holes on the wall of the rotary outer cylinder; hexagonal slotted nuts are welded at the positions of the positioning bolt insertion holes and the standby insertion holes, and the positioning bolts are inserted into the rotary outer cylinder after being screwed into the hexagonal slotted nuts.
Preferably, when the vibrating table works, the supporting sliding table top and the vibrating table top vibrate in a reciprocating mode along the axial direction of the drill rod.
Compared with the prior art, the embodiment of the invention has at least the following advantages:
the invention can realize the simulation of the downhole rotary vibration operation environment, comprises the relative motion of the upper vibration source of the power motor and the inner and outer rings of the bearing group and the simulation of the hole bottom operation surface, has the functions of providing rotation, simulating the friction cutting of the hole bottom and transmitting vibration, can provide simulation conditions for the vibration test of a hole bottom tool, is used for testing the vibration characteristics of a downhole bearing, and provides reference basis for the optimization design of the bearing group and the bottom drilling tool combination.
Simulating vibration of the drilling tool caused by drilling the rock stratum: in the drilling process, the rock breaking mechanisms of different drill bits are different, and the device can simulate the vibration generated when different drill bits drill different rocks.
The underground bearing vibration experiment device can provide vibration signals with different types and different frequencies for the bearing group. The simulation method can simulate various vibration signals encountered in actual construction, adjust parameters of the vibration signals in a certain range, simulate various construction environments, and strengthen reference value of experimental data to actual working conditions.
The rotation state of the bearing group is ensured on the premise of providing a constant vibration signal. The bearing group is a key link of the power drilling tool in the actual construction operation process, the relative rotation of the bearing group fixing cylinder and the drill rod is ensured while bearing the weight of the drill, and the device can simulate the rotation of the bearing group in the actual operation process.
Drawings
FIG. 1 is a schematic diagram of a downhole bearing vibration experiment device according to the present invention;
FIG. 2 is a schematic diagram of the structure of a rotary output table of the downhole bearing vibration test apparatus of the present invention;
FIG. 3 is a schematic diagram of the structure of a vibrating table clamp of the downhole bearing vibration experiment device of the invention;
FIG. 4 is a schematic structural view of a supporting slipway clamp of the downhole bearing vibration experimental device of the present invention;
FIG. 5 is a schematic view of the structure of a bearing support cartridge of the downhole bearing vibration testing apparatus of the present invention;
fig. 6 is a schematic cross-sectional view of a vibrating table clamp of the downhole bearing vibration experimental device of the invention.
Detailed Description
The invention will now be described in further detail with reference to the following examples, which are given by way of illustration only and not by way of limitation, and are not intended to limit the scope of the invention.
The underground bearing vibration experiment device comprises a vibration table 27, a rotary output table 30, a drill rod 3, a bearing support cylinder 31, a support sliding table clamp 32 and a vibration table clamp 33, wherein the vibration table clamp 33 is arranged on a vibration table top 1, and the support sliding table clamp 32 is arranged on a support sliding table top 2; the bearing support cylinder 31 comprises a coupler 6, a rotary outer cylinder 7, a plurality of torque transmission bolts 8, a bearing 16, a bearing set fixing cylinder 9, a drill bit 14, a support shaft 15, a drill bit reducer 10 and a conversion joint 11; one end of the rotary outer cylinder 7 is connected with a bearing end cover 12, the coupler 6 is connected to the bearing end cover 12, a cylinder cavity at one end of the rotary outer cylinder 7, which is close to the bearing end cover 12, is a rock sample cavity, a circle of threaded holes are formed in the cavity wall of the rock sample cavity along the circumferential direction, and a rock sample fastening bolt 13 is matched with each threaded hole; the drill bit 14 is arranged in the rotary outer barrel 7, and the end part of the drill bit 14 faces to the rock sample cavity; the bearing set fixing cylinder 9 is arranged at the other end of the rotary outer cylinder 7, the bearing 16 is arranged in the bearing set fixing cylinder 9, the outer ring of the bearing 16 is fixedly supported by the bearing set fixing cylinder 9, the inner ring is fixedly sleeved on the supporting shaft 15, one end of the supporting shaft 15 is connected with the drill bit 14 through the drill bit reducing sleeve 10, and the other end is fixedly connected with the adapter 11; a plurality of torque transmission bolts 8 are inserted into the rotary outer cylinder 7 along the radial direction of the rotary outer cylinder 7 at the position of the rotary outer cylinder 7 corresponding to the bearing set fixing cylinder 9, and the end parts of the torque transmission bolts 8 are propped against the bearing set fixing cylinder 9; one end of the drill rod 3 is fixed on the vibrating table top 1 through a vibrating table clamp 33, and the other end of the drill rod passes through a supporting sliding table clamp 32 and is connected with the conversion joint 11.
The vibrating table clamp 33 comprises a base, a drill rod joint 4, an adjusting moving block 5 and an adjusting pressing block 16, wherein one surface of the adjusting moving block 5 is fixedly provided with the drill rod joint 4, and the surface opposite to the drill rod joint is provided with an inclined surface; the base is provided with a stop block 17, the adjusting movable block 5 is placed on the base, and the inclined plane of the adjusting movable block 5 is arranged towards the stop block 17; one surface of the adjusting pressing block 16 is in sliding fit with the stop block 17, and the other surface of the adjusting pressing block is provided with a chute in sliding fit with the inclined surface of the adjusting moving block 5; two key holes are formed in the top surface of the adjusting pressing block 16, the two key holes are respectively positioned on two sides of the chute, a fixing bolt is arranged in each key hole, the bottom end of the fixing bolt is fixedly connected with the base, and an adjusting nut is connected on a screw rod protruding out of the key hole in a threaded manner; the two sides of the adjusting moving block 5 are also provided with fixing bolts, the other ends of the fixing bolts penetrate through the stop blocks 17, and one ends of the fixing bolts penetrating through the stop blocks 17 are connected with adjusting nuts through threads; the device further comprises a fixed cushion block 18, wherein the fixed cushion block 18 is placed on the adjusting press block 16, holes are formed in positions of the fixed cushion block 18 corresponding to the two key holes, and a screw rod protruding out of the key holes penetrates through the holes in the fixed cushion block 18 to be in threaded connection with the adjusting nut; the surface of the stop block 17 facing the adjusting moving block 5 is also an inclined surface, and the surface of the adjusting moving block 5 in sliding fit with the inclined surface is also provided with a chute. The vibration table clamp 33 realizes the supporting function of the drill rod 3 at the vibration table 27, eliminates errors in the machining and mounting process of equipment, adjusts the position of the drill rod 3 and transmits vibration signals in the test process. The vibrating table top 1 is provided with mounting bolt holes, in order to enlarge the adjusting capability of the vibrating table clamp 33 to the drill rod 3 as much as possible, uniform mounting holes 19 are arranged on the base of the vibrating table clamp 33, 6 mounting positions of the clamp can be adjusted on the vibrating table 27, the length adjustment can be realized by the adjusting press block 16 structure adopted by the vibrating table clamp 33 in order to ensure that the vibrating table clamp 33 can be finely adjusted, the adjusting distance of 5cm can be realized by the adjusting press block 16, the full table top size adjustment can be realized by matching the base bolt holes of the vibrating table clamp 33 and the 6 mounting positions, and the vibrating table clamp 33 can be fastened by fixing bolts in the horizontal direction and the vertical direction to achieve the fixing purpose. The insertion fit of the sliding groove and the inclined plane also enables the vibration generated by the vibration table 27 to be perfectly transmitted to the drill rod 3 on the premise of realizing length adjustment, so that interference vibration generated by relative movement among the doping adjustment pressing block 16, the adjustment moving block and the stop block 17 in the vibration process is avoided.
The supporting slipway clamp 32 comprises a base 29, a clamping plate 20 and a cushion block 21; the base 29 is fixedly mounted on the supporting slipway table board 2 through bolts, the cushion block 21 is placed between the two clamping plates 20 to form a clamping structure, the clamping structure is placed on the base 29, and positioning stop blocks 28 are arranged around the clamping framework for limiting. The supporting sliding table can slide back and forth in the connecting line direction of the vibrating table 27 and the rotary output table 30, the supporting sliding table clamp 32 is responsible for supporting the drill rod 3, and is fixed by means of cutting grooves of the drill rod 3, so that the rotary axis of the rotary output table 30 is coincident with the center of the drill rod 3 of the vibrating table clamp 33.
And a plurality of key grooves are milled on the outer wall of the bearing set fixing cylinder 9, the number of the key grooves corresponds to that of the torque transmission bolts 8, and the trend of the key grooves is the same as that of the bearing set fixing cylinder 9 in the axial direction. The torque transmission is realized by avoiding slipping when the end of the torque transmission bolt 8 is inserted into the key groove.
The hexagonal slotted nuts are welded at the positions, corresponding to the positions, of the rotary outer barrel 7, where the torque transmission bolts 8 are arranged, and the torque transmission bolts 8 are inserted into the rotary outer barrel 7 after being screwed into the hexagonal slotted nuts.
The torque transmission bolts 8 are uniformly distributed and inserted into the rotary outer barrel 7 in an annular mode along the circumferential direction of the rotary outer barrel 7, one side, corresponding to the insertion holes of the torque transmission bolts 8, of the rotary outer barrel 7 is provided with at least one circle of standby holes, connecting lines between the standby holes and the corresponding insertion holes are parallel to the axis of the rotary outer barrel 7, and hexagonal slotted nuts are welded at the corresponding standby holes. The function of the backup hole is referred to as the backup screw hole, and the main purpose is to adjust the insertion position of the torque transmission bolt 8 according to the position change of the bearing group fixing cylinder 9.
A plurality of circles of standby threaded holes are further formed in the side edge of one circle of threaded holes formed in the rotary outer barrel 7. According to different rock sample shapes, a proper position of a threaded hole is selected to be inserted into and fastened with a rock sample bolt 13 to fix the rock sample.
The rotary outer cylinder 7 is inserted from a position corresponding to the drill bit reducer sleeve 10, and the plurality of positioning bolts 22 are uniformly distributed in a ring shape along the circumferential direction of the rotary outer wall. The positioning bolts 22 are used for supporting the drill bit reducer sleeve 10, and centering due to the influence of self gravity is avoided.
The rotary outer cylinder 7 further comprises a standby inserting hole which is positioned at one side of a circle of inserting holes of positioning bolts 22 on the wall of the rotary outer cylinder 7; hexagonal slotted nuts are welded at the insertion holes and the standby insertion holes of the positioning bolts 22, and the positioning bolts 22 are inserted into the rotary outer cylinder 7 after being screwed into the hexagonal slotted nuts. The function of the spare insertion hole is to adjust the position of the positioning bolt 22 according to the size of the rock sample, the length of the drill bit, and the like, so as to ensure the position correspondence of the rest of the drill bit reducer sleeve 10.
Through holes in the horizontal direction are formed in the positioning bolt 22 and the torque transmission bolt 8, and when the positioning bolt 22 and the torque transmission bolt 8 are screwed into the rotary outer cylinder 7, pins are inserted into the through holes from grooves of the hexagonal slotted nuts, and the positioning bolt 22 and the torque transmission bolt 8 are loosened in the vibration process through the pins and the grooves.
When the vibration table 27 works, the supporting sliding table top 2 and the vibration table top 1 vibrate in a reciprocating manner along the axial direction of the drill rod 3.
The vibration table 27 provides vibration signals to realize vibration excitation of the bearing group, and the vibration signals are transmitted to the bearing group through the vibration table clamp 33, the support sliding table clamp 32 and the drill rod 3.
The rotary function is realized by means of three parts, namely a bearing end cover 12, a torque transmission bolt 8 and a rotary outer cylinder 7, wherein the bearing end cover 12 transmits kinetic energy transmitted by a motor through a worm reducer 23, a plate wheel 24, a belt 25 and a rotary output shaft 26 to the rotary outer cylinder 7, and the rotary outer cylinder 7 is transmitted to a bearing group fixing cylinder 9 with a key groove through the torque transmission bolt 8 by means of a hexagonal slotted nut welded on the outer cylinder.
The device utilizes different rocks as simulated drilling rock stratum, and the drilling surface simulation is used for fixing a rock sample on the rotary outer barrel 7 by fastening the rock sample bolt 13, and the vibration change generated by drilling the rock stratum at the bottom of a simulated hole is realized by means of the relative rotation of the rotary outer barrel 7 and the drill bit after the drill bit is contacted with the rock sample.
The operation process comprises the following steps:
completing the assembly of the rotary output table 30 and the bearing support cylinder 31;
centering the vibration table 27, the rotary output table 30, the supporting sliding table, the vibration table clamp 33 and the supporting sliding table clamp 32, so as to ensure that the axis of the drill rod 3 is concentric with the axis of the rotary output shaft 26 of the rotary output table 30 and the bearing group supporting cylinder shaft;
bonding a vibration acceleration sensor on a test body (a bearing 16) for collecting vibration signals of the bearing group;
screwing the torque transmission bolt 8 into the bearing set fixing cylinder 9;
the motor is started, the frequency converter is used for regulating and controlling the rotating speed, and the worm speed reducer 23, the plate wheel 24, the belt 25 and the rotary output shaft 26 drive the bearing support cylinder 31 to rotate, so that the outer ring of the bearing 16 is driven to rotate.
Vibration test parameters are set, the vibration table 27 is started, and excitation signals are transmitted to the bearing group.
The response signal generated by the bearing set is collected and analyzed to derive the vibration characteristics of the bearing 16.
When the torque transmission bolt 8 is propped against the bearing group fixing cylinder 9, the vibration table 27 and the rotary output table 30 are simultaneously opened, so that the downhole drilling working condition can be restored, and the vibration characteristic of the downhole bearing 16 in the actual drilling process can be obtained.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (10)
1. The underground bearing vibration experiment device is characterized by comprising a vibration table, a rotary output table, a drill rod, a bearing support cylinder, a support sliding table clamp and a vibration table clamp, wherein the vibration table clamp is arranged on the surface of the vibration table, and the support sliding table clamp is arranged on the surface of the support sliding table; the bearing support cylinder comprises a coupler, a rotary outer cylinder, a plurality of torque transmission bolts, a bearing group fixing cylinder, a drill bit, a support shaft, a drill bit reducer sleeve and a conversion joint; one end of the rotary outer cylinder is connected with a bearing end cover, the coupler is connected to the bearing end cover, a cylinder cavity at one end of the rotary outer cylinder, which is close to the bearing end cover, is a rock sample cavity, a circle of threaded holes are formed in the cavity wall of the rock sample cavity along the circumferential direction, and a rock sample fastening bolt is matched with each threaded hole; the drill bit is arranged in the rotary outer cylinder, and the end part of the drill bit faces towards the rock sample cavity; the bearing support cylinder is arranged at the other end of the rotary outer cylinder, the bearing is arranged in the bearing group fixing cylinder, the outer ring of the bearing is fixedly supported by the bearing group fixing cylinder, the inner ring of the bearing is fixedly sleeved on the support shaft, one end of the support shaft is connected with the drill bit through the drill bit reducing sleeve, and the other end of the support shaft is fixedly connected with the adapter; a plurality of torque transmission bolts are inserted into the rotary outer cylinder along the radial direction of the rotary outer cylinder at the position of the rotary outer cylinder corresponding to the bearing group fixing cylinder, and the end parts of the torque transmission bolts are propped against the bearing group fixing cylinder; one end of the drill rod is fixed on the table top of the vibrating table through the vibrating table clamp, and the other end of the drill rod penetrates through the supporting sliding table clamp to be connected with the adapter.
2. The downhole bearing vibration experiment device according to claim 1, wherein the vibrating table clamp comprises a base, a drill rod joint, an adjusting moving block and an adjusting pressing block, wherein one surface of the adjusting moving block is fixedly provided with the drill rod joint, and the surface opposite to the drill rod joint is provided with an inclined surface; the base is provided with a stop block, the adjusting moving block is arranged on the base, and the inclined plane of the adjusting moving block faces the stop block; one surface of the adjusting pressing block is in sliding fit with the stop block, and the other surface of the adjusting pressing block is provided with a chute in sliding fit with the inclined surface of the adjusting moving block; two key holes are formed in the top surface of the adjusting pressing block, the two key holes are respectively positioned on two sides of the chute, a fixing bolt is arranged in each key hole, the bottom end of the fixing bolt is fixedly connected with the base, and an adjusting nut is connected with a screw rod protruding out of the key hole in a threaded manner; the two sides of the adjusting moving block are also provided with fixing bolts, the other ends of the fixing bolts penetrate through the stop blocks, and one ends of the fixing bolts penetrating through the stop blocks are connected with adjusting nuts in a threaded mode.
3. The downhole bearing vibration testing apparatus of claim 1, wherein the support slip clamp comprises a base, a clamp plate, and a spacer block; the base passes through bolt fixed mounting on supporting the slip table mesa, the cushion is placed and is formed a clamping structure in the middle of two splint, clamping structure places on the base, all is provided with the dog and carries out spacingly around the centre gripping framework.
4. The downhole bearing vibration testing apparatus of claim 1, wherein a plurality of keyways are milled into the outer wall of the bearing set fixture cylinder, the number of keyways corresponds to the number of torque transfer bolts, and the orientation of the keyways is the same as the axial direction of the bearing set fixture cylinder.
5. The downhole bearing vibration experiment device according to claim 1 or 4, wherein the hexagonal slotted nuts are welded at positions of the rotary outer cylinder corresponding to the positions provided with the torque transmission bolts, and the torque transmission bolts are inserted into the rotary outer cylinder after being screwed into the hexagonal slotted nuts.
6. The downhole bearing vibration experiment device according to claim 5, wherein the torque transmission bolts are inserted into the rotary outer cylinder in an annular and uniform manner along the circumferential direction of the rotary outer cylinder, at least one circle of standby holes are formed in one side of the rotary outer cylinder corresponding to the insertion holes of the torque transmission bolts, connecting lines between the standby holes and the corresponding insertion holes are parallel to the axis of the rotary outer cylinder, and a hexagonal slotted nut is welded at each corresponding standby hole.
7. The downhole bearing vibration experiment device according to claim 2, further comprising a fixed cushion block, wherein the fixed cushion block is placed on the adjusting press block, the fixed cushion block is provided with holes corresponding to the positions of the two key holes, and a screw rod protruding out of the key holes penetrates through the holes in the fixed cushion block to be in threaded connection with the adjusting nut; the surface of the stop block facing the adjusting moving block is also an inclined surface, and the surface of the adjusting moving block, which is in sliding fit with the stop block, is also provided with a chute.
8. The downhole bearing vibration testing apparatus of claim 1, further comprising a plurality of positioning bolts inserted from the rotary outer barrel at positions corresponding to the drill bit reducer sleeve, the plurality of positioning bolts being annularly and evenly distributed along the circumference of the rotary outer wall.
9. The downhole bearing vibration test apparatus of claim 8, further comprising a backup insertion hole located on one side of a ring of positioning bolt insertion holes on the wall of the rotating outer barrel; hexagonal slotted nuts are welded at the positions of the positioning bolt insertion holes and the standby insertion holes, and the positioning bolts are inserted into the rotary outer cylinder after being screwed into the hexagonal slotted nuts.
10. The downhole bearing vibration testing apparatus of claim 1, wherein the support skid table top and the vibration table top vibrate reciprocally along the drill pipe axis when the vibration table is in operation.
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| CN201710810793.7A CN107505136B (en) | 2017-09-08 | 2017-09-08 | Underground bearing vibration experimental device |
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| CN107505136B true CN107505136B (en) | 2023-08-25 |
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| CN109269748A (en) * | 2018-10-31 | 2019-01-25 | 中海油能源发展股份有限公司 | Pipeline detection vibration equipment fixture |
| CN109632307A (en) * | 2018-12-12 | 2019-04-16 | 苏州长菱测试技术有限公司 | Bearing fatigue vibrational system |
| CN109520695B (en) * | 2019-01-11 | 2023-10-20 | 广西科技大学 | Vibrating table for researching vibration characteristics of oval packaging material |
| CN110976337B (en) * | 2019-12-09 | 2021-06-22 | 商丘工学院 | Bearing detection device |
| CN112504440B (en) * | 2020-12-10 | 2023-05-16 | 河南工学院 | Online monitoring test device for vibration of rotary machine |
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