CN117804749B - Micro-vibration monitoring system for bolts - Google Patents
Micro-vibration monitoring system for bolts Download PDFInfo
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- CN117804749B CN117804749B CN202310437855.XA CN202310437855A CN117804749B CN 117804749 B CN117804749 B CN 117804749B CN 202310437855 A CN202310437855 A CN 202310437855A CN 117804749 B CN117804749 B CN 117804749B
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 179
- 238000007789 sealing Methods 0.000 claims abstract description 55
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims description 23
- 230000006835 compression Effects 0.000 claims description 18
- 238000007906 compression Methods 0.000 claims description 18
- 230000000694 effects Effects 0.000 claims description 11
- 230000008878 coupling Effects 0.000 description 14
- 238000010168 coupling process Methods 0.000 description 14
- 238000005859 coupling reaction Methods 0.000 description 14
- 238000003780 insertion Methods 0.000 description 7
- 230000037431 insertion Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000000149 penetrating effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 5
- 238000007689 inspection Methods 0.000 description 4
- 238000011897 real-time detection Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 206010033799 Paralysis Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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Abstract
The invention discloses a micro vibration monitoring system of a bolt, in particular to the technical field of mechanical fastener monitoring, which comprises two to-be-connected pieces, wherein a connecting bolt is movably inserted between the two to-be-connected pieces, the bottom of the connecting bolt penetrates through the two to-be-connected pieces and is provided with a connecting nut in a threaded manner, a monitoring mechanism is arranged between the head of the connecting bolt and the upper surface of the to-be-connected piece, and a sealing component is arranged between the outer side of the monitoring mechanism and the upper surface of the to-be-connected piece.
Description
Technical Field
The invention relates to the technical field of mechanical fastener monitoring, in particular to a micro vibration monitoring system of a bolt.
Background
The bolts and nuts and other parts are used in the assembly connection and the fastening assembly of various machines and parts, so that great convenience is brought to the assembly and the use of machines, buildings, bridges and the like, but if a fixed object has periodic vibration, such as a motor, a train rail, a fan blade and the like, the bolts can loosen, if the fixed object is not protected, the equipment vibration is abnormal or the parts are damaged, and the whole equipment is paralyzed; for a bolt fastening device which vibrates for a long time, the loosening risk is increased, the bolt fastening device can be automatically loosened in severe vibration, so that parts are damaged, and serious accidents and casualties are caused; in order to avoid dangerous accidents caused by loosening of the bolts due to vibration, manual regular inspection is needed, the connecting bolts are regularly inspected, the manual inspection is low in efficiency, high in regular inspection cost and accompanied with risk of personal safety, and the accuracy and reliability of inspection results are difficult to ensure; therefore, the bolt loosening is necessary to be monitored on line in real time;
Currently, there are three general methods for online monitoring of bolt loosening: ultrasonic method: an ultrasonic sensor is arranged at the top of the bolt, the elongation of the bolt is calculated according to the ultrasonic time and speed, and the axial force of the bolt is calculated according to the axial rigidity of the bolt; strain gage monitoring method: the special stress sensor is sleeved on the bolt like a gasket, and the pressure of the sensor is the axial force of the bolt; video image method: monitoring whether the nut of the bolt connection pair rotates along with the bolt through a camera shooting technology, and loosening the bolt if the nut rotates along with the bolt; the former two methods need to monitor the pretightening force of each bolt, and each bolt needs to be treated, so that the process is complex and the cost is high; in view of the monitoring range of a single camera, the video image method generally needs to install at least more than two high-precision cameras, has higher requirements on the installation environment and is high in cost, and therefore, a micro vibration monitoring system of a bolt is proposed to solve the problems.
Disclosure of Invention
The invention aims to provide a tiny vibration monitoring system of a bolt, so as to solve the problems in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions: the micro vibration monitoring system of the bolt comprises two to-be-connected pieces, wherein two to-be-connected pieces are movably inserted with connecting bolts between the to-be-connected pieces, the bottoms of the connecting bolts penetrate through the two to-be-connected pieces and are provided with connecting nuts in a threaded manner, a monitoring mechanism is arranged between the head of the connecting bolts and the upper surface of the to-be-connected piece, and a sealing assembly is arranged between the outer side of the monitoring mechanism and the upper surface of the to-be-connected piece.
Preferably, the monitoring mechanism comprises a monitoring outer cylinder and a positioning sleeve, the middle parts of the monitoring outer cylinder and the positioning sleeve are provided with penetrating grooves, the connecting bolts movably penetrate through the two penetrating grooves, a monitoring cavity is arranged in the monitoring outer cylinder, a force transmission pipe is fixedly arranged in the middle of the bottom end of the positioning sleeve, a ring penetrating groove matched with the force transmission pipe is formed in the middle of the top end of the monitoring outer cylinder, the bottom of the force transmission pipe penetrates through the ring penetrating groove and extends into the monitoring cavity, a compression ring is fixedly arranged at the bottom end of the force transmission pipe, an arc-shaped plate is integrally formed in the outer side of the compression ring, the outer side of the arc-shaped plate is in contact with the inner wall of the monitoring cavity, a torsion monitoring component corresponding to the arc-shaped plate is arranged on one side of the inner lower wall of the monitoring cavity, and a tension monitoring component corresponding to one side of the inner lower wall of the monitoring cavity, which is close to the torsion monitoring component, is fixedly arranged.
Preferably, the head of the connecting bolt is movably clamped in the positioning sleeve, two fixing protrusions which are symmetrically distributed are fixedly arranged at the bottom end of the monitoring outer cylinder, a fixing groove matched with the fixing protrusions is formed in the upper surface of the to-be-connected piece, and the fixing protrusions are movably clamped in the corresponding fixing grooves.
Preferably, the torsion monitoring assembly comprises a fixing frame and side pressure plates, the fixing frame is fixedly arranged on one side of the inner lower wall of the monitoring cavity, the side pressure plates are symmetrically distributed, the two side pressure plates are respectively and vertically arranged at two end parts of the arc-shaped plate, and a signal receiver corresponding to the position of the side pressure plate is fixedly arranged at the top end of the fixing frame.
Preferably, the tension monitoring assembly comprises a monitoring outer frame, the monitoring outer frame is fixedly arranged on one side, close to the torsion monitoring assembly, of the inner lower wall of the monitoring cavity, a longitudinal sliding groove is formed in the middle of the top end of the monitoring outer frame, a limiting ring is fixedly clamped at the top of the longitudinal sliding groove, a tension outer cylinder is movably inserted in the middle of the limiting ring, a compression rod is slidably clamped at the bottom end of the tension outer cylinder, an electric contact head is fixedly arranged at the bottom end of the compression rod, a contact receiver matched with the electric contact head is fixedly arranged on the inner lower wall of the longitudinal sliding groove, the electric contact head is in contact with the contact receiver, and the upper surface of the tension outer cylinder is in contact with the lower surface of the compression ring.
Preferably, the bottom fixing clip of indulging the spout is equipped with the lantern ring, the activity of tension urceolus runs through the middle part of lantern ring, the fixed cover in outside middle part of tension urceolus is equipped with the tension ring, be equipped with first tension spring between tension ring bottom and the lantern ring top, fixed mounting has the second tension spring between the interior upper wall of depression bar's top and tension urceolus.
Preferably, the seal assembly comprises a seal outer cylinder, a seal pipe is integrally formed in the middle of the top end of the seal outer cylinder, the seal outer cylinder is movably sleeved on the outer side of the monitoring outer cylinder, the seal pipe is movably sleeved on the outer side of the force transmission pipe, a telescopic groove is formed in the bottom end of the seal outer cylinder, a seal insertion pipe is arranged at the bottom of the telescopic groove in a sliding clamping mode, a third tension spring is fixedly mounted on the top end of the seal insertion pipe and the inner upper wall of the telescopic groove, a seal ring is fixedly mounted at the bottom end of the seal insertion pipe, the lower surface of the seal ring is in contact with the upper surface of a to-be-connected piece, a concave ring groove matched with the seal pipe for use is formed in the lower surface of the positioning sleeve, and the top of the seal pipe is movably clamped in the concave ring groove.
Preferably, the outer wall of the positioning sleeve is fixedly provided with a reset pointer, and the upper surface of the monitoring outer cylinder is provided with a reset groove matched with the reset pointer.
Preferably, a transparent window is arranged at the top end fixing clamp of the sealing outer cylinder, and the position of the transparent window corresponds to the position of the reset groove vertically.
Preferably, the micro vibration monitoring system of the bolt comprises a torsion monitoring module, a tension monitoring module and a sealing module, wherein the torsion monitoring module comprises a torsion monitoring piece, the tension monitoring module comprises a tension monitoring piece, and the torsion monitoring piece and the tension monitoring piece are matched with each other for use.
Compared with the prior art, the invention has the beneficial effects that:
1. Through setting up monitoring mechanism, including torsion monitoring component and the tension monitoring component that mutually support and use in the monitoring mechanism, can carry out the real-time supervision that connecting bolt produced little vibration and twistd reverse simultaneously to and connecting nut produced little vibration and twistd reverse the real-time supervision that connecting nut and connecting bolt interval increase, thereby effectively promote the little vibration monitoring effect to the bolt, promote the security of fixing between connecting nut and the connecting bolt;
2. through setting up seal assembly, when positioning sleeve, force transmission pipe carry out stable rotation, still can carry out effective seal to between positioning sleeve bottom, the outside of monitoring urceolus and the waiting connecting piece upper surface, simultaneously connecting bolt, coupling nut interval increase drive positioning sleeve, the increase of monitoring urceolus interval still can carry out effective seal to between positioning sleeve bottom, the outside of monitoring urceolus and waiting connecting piece upper surface;
3. through setting up the pointer that resets, the recess that resets is offered in the cooperation, and follow-up when overhauling, only need when tightening connecting bolt, coupling nut, through the transparent window, observe the recess that resets and the pointer that resets and correspond, just realize the reset of relative position between positioning sleeve, the monitoring urceolus, the follow-up real-time detection that continues of being convenient for.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Figure 1 is a schematic diagram of the structure of the present invention,
Figure 2 is a schematic diagram of the structural connection after detachment of the present invention,
Figure 3 is a schematic diagram of the structure of the monitoring mechanism in the invention,
Figure 4 is a schematic view of a portion of a connection structure of the torsion monitor apparatus according to the present invention,
Figure 5 is a schematic view of structural connection of the tension monitoring assembly of the present invention,
Figure 6 is a schematic view of a partial structural connection of the tension monitoring assembly of the present invention,
Figure 7 is a schematic view of the structural attachment of the seal assembly of the present invention,
Figure 8 is a schematic diagram of the structural connection of the monitoring mechanism and the sealing assembly in the invention,
Fig. 9 is a diagram of a system for monitoring the minute vibration of a bolt according to the present invention.
In the figure: 1. a member to be connected; 101. a fixing groove; 2. a connecting bolt; 3. a coupling nut; 4. a monitoring mechanism; 5. a seal assembly; 41. monitoring the outer cylinder; 411. monitoring the cavity; 412. a ring-through groove; 42. positioning a sleeve; 43. a force transmission tube; 44. a compression ring; 45. an arc-shaped plate; 46. a torque monitoring assembly; 47. a tension monitoring assembly; 48. resetting the pointer; 481. resetting the groove; 49. fixing the convex; 461. a fixing frame; 462. a signal receiver; 463. a side pressure plate; 471. monitoring the outer frame; 4711. a longitudinal sliding groove; 472. a limiting ring; 473. a tension outer cylinder; 474. a compression bar; 475. an electrical contact; 4751. a contact receiver; 476. a collar; 477. a tension ring; 478. a first tension spring; 479. a second tension spring; 51. sealing the outer cylinder; 52. sealing the tube; 511. a telescopic slot; 53. sealing the cannula; 54. a third tension spring; 55. a seal ring; 521. a concave ring groove; 56. a transparent window.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples: as shown in fig. 1-9, the invention provides a micro vibration monitoring system of a bolt, which comprises two to-be-connected pieces 1, wherein two to-be-connected pieces 1 are movably inserted with a connecting bolt 2 between the two to-be-connected pieces 1, the bottom of the connecting bolt 2 penetrates through the two to-be-connected pieces 1 and is provided with a connecting nut 3 in a threaded manner to fix the two to-be-connected pieces 1 by the bolt, a monitoring mechanism 4 is arranged between the head of the connecting bolt 2 and the upper surface of the to-be-connected piece 1, and a sealing component 5 is arranged between the outer side of the monitoring mechanism 4 and the upper surface of the to-be-connected piece 1.
The monitoring mechanism 4 comprises a monitoring outer barrel 41 and a positioning sleeve 42, penetrating grooves are formed in the middle parts of the monitoring outer barrel 41 and the positioning sleeve 42, and the connecting bolt 2 movably penetrates through the two penetrating grooves;
The head movable joint of connecting bolt 2 is in the positioning sleeve 42, carries out the location cup joint between monitoring mechanism 4 and the connecting bolt 2 head, the bottom fixed mounting of monitoring urceolus 41 has two fixed protruding 49 of symmetric distribution, the fixed recess 101 that cooperates with fixed protruding 49 and use is offered to the upper surface of waiting to connect 1, fixed protruding 49 movable joint is in corresponding fixed recess 101, carries out the location joint between monitoring mechanism 4 and waiting to connect 1 upper surface.
The utility model discloses a monitoring urceolus 41, be equipped with monitoring cavity 411 in the monitoring urceolus 41, fixed mounting has force transmission pipe 43 in the bottom middle part of positioning sleeve 42, the annular groove 412 that cooperates with force transmission pipe 43 to use is seted up in the top middle part of monitoring urceolus 41, the bottom of force transmission pipe 43 passes annular groove 412 and extends to monitoring cavity 411 in, and the positioning sleeve 42 of being convenient for, force transmission pipe 43 carry out stable rotation, when connecting bolt 2 produces tiny vibration and twists reverse, drive positioning sleeve 42, force transmission pipe 43 and carry out stable rotation, the bottom fixed mounting of force transmission pipe 43 has clamping ring 44, the outside integrated into one piece of clamping ring 44 has arc 45, the outside of arc 45 and the inner wall contact of monitoring cavity 411, and positioning sleeve 42, force transmission pipe 43 carry out stable rotation, drive clamping ring 44, arc 45 carry out stable rotation, the interior lower wall one side of monitoring cavity 411 is equipped with the torsion monitoring component 46 that corresponds with arc 45, the interior lower wall of monitoring cavity is close to torsion monitoring component 46 has tension monitoring component 47 that corresponds with clamping ring 44.
The torsion monitoring component 46 comprises a fixing frame 461 and a side pressure plate 463, the fixing frame 461 is fixedly arranged on one side of the inner lower wall of the monitoring cavity 411, the side pressure plate 463 is provided with two symmetrically distributed side pressure plates 463, the two side pressure plates 463 are respectively and vertically arranged at two end parts of the arc plate 45, a signal receiver 462 corresponding to the position of the side pressure plate 463 is fixedly arranged at the top end of the fixing frame 461, the arc plate 45 stably rotates to drive the side pressure plate 463 to rotate, when a certain safety distance is rotated, the side pressure plate 463 is contacted with the corresponding signal receiver 462, the signal receiver 462 transmits an electric signal to a monitoring terminal, the connecting bolt 2 at the position is reminded of generating tiny vibration to twist, so that subsequent maintenance personnel can accurately maintain the connecting bolt, and further tiny vibration real-time monitoring of the bolt is realized, and the use safety is improved.
The tension monitoring assembly 47 comprises a monitoring outer frame 471, the monitoring outer frame 471 is fixedly arranged on one side, close to the torsion monitoring assembly 46, of the inner lower wall of the monitoring cavity 411, a longitudinal sliding groove 4711 is formed in the middle of the top end of the monitoring outer frame 471, a limiting ring 472 is fixedly clamped at the top of the longitudinal sliding groove 4711, a tension outer barrel 473 is movably inserted in the middle of the limiting ring 472, and the upper surface of the tension outer barrel 473 is in contact with the lower surface of the compression ring 44; after the two to-be-connected pieces 1 are fixed by bolts through the connecting bolts 2 and the connecting nuts 3, the compression ring 44 always props against the tension outer barrel 473 to limit the height of the tension outer barrel 473;
The bottom slip card of tension urceolus 473 is equipped with depression bar 474, the bottom fixed mounting of depression bar 474 has electric contact 475, the interior lower wall fixed mounting of indulge spout 4711 has the contact receiver 4751 that uses with electric contact 475 cooperation, electric contact 475 and contact receiver 4751 contact, after carrying out the bolt fastening through connecting bolt 2, coupling nut 3 between two waiting to connect 1, electric contact 475 and contact receiver 4751 contact all the time, contact receiver 4751 receives tension signal all the time, and the distance does not have great change between connecting bolt 2, the coupling nut 3.
The bottom fixing clip of indulging spout 4711 is equipped with the lantern ring 476, the activity of tension urceolus 473 runs through the middle part of lantern ring 476, the outside middle part fixed cover of tension urceolus 473 is equipped with tension ring 477, be equipped with first tension spring 478 between tension ring 477 bottom and the lantern ring 476 top, fixed mounting has second tension spring 479 between the interior upper wall of compression lever 474's top and tension urceolus 473, and after two wait to be connected piece 1 carries out the bolt fastening through connecting bolt 2, coupling nut 3, first tension spring 478, second tension spring 479 is in compression throughout, when coupling nut 3 produces tiny vibration and twists, the interval between coupling nut 3 and coupling bolt 2 increases, cooperates the tension effect of first tension spring 478, drives tension ring 477, tension urceolus 473 upward movement, and drive arc 45 upward movement, simultaneously, and cooperation second tension spring 479's tension effect, electric contact 475 still can contact with contact receiver 4751, contact receiver 4751 receives tension signal throughout, and account for coupling bolt 2, coupling nut 3 is great distance between coupling nut 3 carries out the bolt, after the time, and coupling nut 3 is not changed by the time, and the vibration of the electric contact bolt is continued to be monitored, and the vibration is carried out by the high-quality, and the vibration is not carried out to the vibration and is continued to the vibration of the small contact nut is detected, and the vibration of the jack is detected, and the jack is convenient for the jack-up.
The sealing assembly 5 comprises a sealing outer cylinder 51, a sealing tube 52 is integrally formed in the middle of the top end of the sealing outer cylinder 51, the sealing outer cylinder 51 is movably sleeved on the outer side of the monitoring outer cylinder 41, the sealing tube 52 is movably sleeved on the outer side of the force transmission tube 43, a telescopic groove 511 is formed in the bottom end of the sealing outer cylinder 51, a sealing insertion tube 53 is slidably clamped at the bottom of the telescopic groove 511, the sealing insertion tube 53 can stretch out and draw back in the telescopic groove 511, a third tension spring 54 is fixedly arranged on the top end of the sealing insertion tube 53 and the inner upper wall of the telescopic groove 511, a sealing ring 55 is fixedly arranged at the bottom end of the sealing insertion tube 53, the lower surface of the sealing ring 55 is in contact with the upper surface of the to-be-connected member 1, a concave ring groove 521 matched with the sealing tube 52 is formed in the lower surface of the positioning sleeve 42, the top movable clamp of the sealing tube 52 is in the concave ring groove 521, the sealing ring groove 521 is matched with the sealing tube 52, effective sealing is performed between the bottom end of the positioning sleeve 42, the outer side of the monitoring outer cylinder 41 and the upper surface to-be-connected member 1, and the positioning sleeve 3 is still arranged at the same time, the bottom end of the positioning sleeve can be rotatably connected with the upper surface of the sealing sleeve 1, the sealing ring groove 2 is still to be rotatably connected with the upper surface of the sealing sleeve 1, and the upper surface of the sealing sleeve is still 2, the upper surface of the sealing sleeve is kept in contact with the sealing ring 3, and the upper surface is still 2 is kept in contact with the gap between the sealing ring 2, and the upper surface is always 2, and the upper surface of the sealing ring is kept constant tension between the sealing ring is 3 is kept constant, and 3 and the upper surface is kept constant, and the upper surface is always and the upper surface is kept and the upper surface is always and 3, and the upper surface is always and the lower, an effective seal is made between the outside of the monitoring outer cylinder 41 and the upper surface of the member 1 to be connected.
The outer wall of the positioning sleeve 42 is fixedly provided with a reset pointer 48, and the upper surface of the monitoring outer cylinder 41 is provided with a reset groove 481 matched with the reset pointer 48; a transparent window 56 is fixedly clamped at the top end of the sealing outer barrel 51, and the position of the transparent window 56 vertically corresponds to the position of the reset groove 481; through setting up the pointer 48 that resets, the cooperation is offered and is reset recess 481, and follow-up when overhauling, need reset the relative position between positioning sleeve 42, the monitoring urceolus 41, and the follow-up real-time detection of continuing of being convenient for only need when tightening connecting bolt 2, coupling nut 3, through transparent window 56, observe reset recess 481 and reset pointer 48 correspondence, just realize the reset of positioning sleeve 42, monitoring urceolus 41 relative position, the follow-up real-time detection of continuing of being convenient for.
The small vibration monitoring system of bolt includes torsion monitoring module, tension monitoring module and sealed module, torsion monitoring module includes torsion monitoring piece, tension monitoring module includes tension monitoring piece, torsion monitoring piece, tension monitoring piece mutually support and use, through setting up torsion monitoring module, tension monitoring module, wherein, tension monitoring piece and torsion monitoring piece mutually support and use in the torsion monitoring module in the tension monitoring module, can carry out the real-time supervision that connecting bolt 2 produced small vibration and twistd, and connecting nut 3 produced small vibration and twistd time the real-time supervision that connecting nut 3 and connecting bolt 2 interval increased, thereby effectively promote the small vibration monitoring effect to the bolt, promote the security of fixing between connecting nut 3 and the connecting bolt 2.
Working principle: when the connecting bolt is used, the fixing protrusions 49 are movably clamped in the corresponding fixing grooves 101, the heads of the connecting bolts 2 are movably clamped in the positioning sleeves 42, the connecting bolts 2 movably penetrate through the two through grooves and the two to-be-connected pieces 1, the connecting nuts 3 are fixed at the end threads, and the two to-be-connected pieces 1 are fixed by the connecting bolts 2 and the connecting nuts 3;
at this time, the pressing ring 44 always abuts against the tension outer cylinder 473, the tension outer cylinder 473 is highly limited, the electric contact 475 always contacts the contact receiver 4751, the contact receiver 4751 always receives a tension signal, which means that the distance between the connecting bolt 2 and the connecting nut 3 is not greatly changed, and the first tension spring 478 and the second tension spring 479 are always in a compressed state;
meanwhile, the sealing outer cylinder 51 is movably sleeved on the outer side of the monitoring outer cylinder 41, the sealing tube 52 is movably sleeved on the outer side of the force transmission tube 43, the lower surface of the sealing ring 55 is in contact with the upper surface of the to-be-connected piece 1, and effective sealing is carried out on the bottom end of the positioning sleeve 42, the outer side of the monitoring outer cylinder 41 and the upper surface of the to-be-connected piece 1;
When the connecting bolt 2 is used later to generate tiny vibration to twist, the positioning sleeve 42 and the force transmission tube 43 are driven to rotate stably, the compression ring 44 and the arc plate 45 are driven to rotate stably, the arc plate 45 drives the side pressing plate 463 to rotate, when the side pressing plate 463 rotates for a certain safety distance, the side pressing plate 463 is contacted with the corresponding signal receiver 462, the signal receiver 462 transmits an electric signal to the monitoring terminal, the connecting bolt 2 at the position is reminded to generate tiny vibration to twist, so that the accurate maintenance of the connecting bolt is convenient for subsequent maintenance personnel, and the real-time monitoring of the tiny vibration of the bolt is realized;
When the connecting nut 3 generates tiny vibration to twist, the distance between the connecting nut 3 and the connecting bolt 2 is increased, the tension ring 477 and the tension outer cylinder 473 are driven to move upwards in cooperation with the tension action of the first tension spring 478, the arc plate 45 is driven to move upwards, meanwhile, the electric contact head 475 is contacted with the contact receiver 4751 in cooperation with the tension action of the second tension spring 479, the contact receiver 4751 always receives a tension signal, so that the distance between the connecting bolt 2 and the connecting nut 3 is not changed greatly, and the tension outer cylinder 473 continues to move upwards until the connecting nut 3 generates tiny vibration to twist and the distance between the connecting bolt 2 is larger, and the compression rod 474 and the electric contact head 475 are driven to move upwards, and finally the electric contact head 475 is not contacted with the contact receiver 4751, at the moment, the contact receiver 4751 does not receive the tension signal, a monitoring terminal monitors that the connecting nut 3 generates tiny vibration to twist, so that subsequent maintenance personnel can maintain the connecting nut accurately, and further realize real-time monitoring of the tiny vibration of the bolt;
Through the arrangement of the concave ring groove 521, the sealing outer cylinder 51, the sealing tube 52 and the sealing ring 55 are matched for use, effective sealing is carried out between the bottom end of the positioning sleeve 42, the outer side of the monitoring outer cylinder 41 and the upper surface of the to-be-connected piece 1, and when the positioning sleeve 42 and the force transmission tube 43 stably rotate, effective sealing can still be carried out between the bottom end of the positioning sleeve 42, the outer side of the monitoring outer cylinder 41 and the upper surface of the to-be-connected piece 1, and through the arrangement of the third tension spring 54, when the spacing between the connecting bolt 2 and the connecting nut 3 is increased, the spacing between the positioning sleeve 42 and the monitoring outer cylinder 41 is driven to be increased, at the moment, the third tension spring 54 is reset, the top of the driving sealing tube 52 is movably clamped in the concave ring groove 521 all the time, and the lower surface of the sealing ring 55 is always contacted with the upper surface of the to-be-connected piece 1, and effective sealing can still be carried out between the bottom end of the positioning sleeve 42, the outer side of the monitoring outer cylinder 41 and the upper surface of the to-be-connected piece 1;
When the connecting bolt 2 and the connecting nut 3 are screwed tightly in the subsequent maintenance, the reset of the relative positions between the positioning sleeve 42 and the monitoring outer cylinder 41 can be realized by observing the correspondence between the reset groove 481 and the reset pointer 48 through the transparent window 56, so that the subsequent continuous real-time detection is facilitated;
The small vibration monitoring system of the whole bolt comprises a torsion monitoring module, a tension monitoring module and a sealing module, wherein the tension monitoring piece in the tension monitoring module and the torsion monitoring piece in the torsion monitoring module are mutually matched for use, the real-time monitoring that the connecting bolt 2 generates small vibration to twist can be carried out simultaneously, and the real-time monitoring that the distance between the connecting nut 3 and the connecting bolt 2 is increased when the connecting nut 3 generates small vibration to twist can be carried out, so that the small vibration monitoring effect of the bolt is effectively improved, and the safety of fixing between the connecting nut 3 and the connecting bolt 2 is improved.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a tiny vibration monitoring system of bolt, includes waiting connecting piece (1), its characterized in that: the two parts to be connected (1) are provided with two connecting bolts (2) which are movably inserted between the two parts to be connected (1), the bottoms of the connecting bolts (2) penetrate through the two parts to be connected (1) and are provided with connecting nuts (3) in a threaded manner, a monitoring mechanism (4) is arranged between the head of the connecting bolts (2) and the upper surface of the parts to be connected (1), and a sealing assembly (5) is arranged between the outer side of the monitoring mechanism (4) and the upper surface of the parts to be connected (1);
The monitoring mechanism (4) comprises a monitoring outer cylinder (41) and a positioning sleeve (42), the middle parts of the monitoring outer cylinder (41) and the positioning sleeve (42) are provided with through grooves, a connecting bolt (2) movably penetrates through the two through grooves, a monitoring cavity (411) is arranged in the monitoring outer cylinder (41), a force transmission pipe (43) is fixedly arranged in the middle of the bottom end of the positioning sleeve (42), a ring through groove (412) matched with the force transmission pipe (43) is formed in the middle of the top end of the monitoring outer cylinder (41), the bottom of the force transmission pipe (43) penetrates through the ring through groove (412) and extends into the monitoring cavity (411), a compression ring (44) is fixedly arranged at the bottom end of the force transmission pipe (43), an arc plate (45) is integrally formed in the outer side of the compression ring (44), the outer side of the arc plate (45) is contacted with the inner wall of the monitoring cavity (411), a torsion monitoring assembly (46) corresponding to the torsion monitoring assembly (45) is arranged on one side of the inner lower wall of the monitoring cavity (411), and the tension assembly (47) is fixedly arranged on one side of the lower wall of the monitoring cavity (46) close to the tension assembly (47);
The tension monitoring assembly (47) comprises a monitoring outer frame (471), one side of a torsion monitoring assembly (46) is close to the inner lower wall of a monitoring cavity (411) through the fixed mounting of the monitoring outer frame (471), a longitudinal sliding groove (4711) is formed in the middle of the top end of the monitoring outer frame (471), a limiting ring (472) is fixedly clamped at the top of the longitudinal sliding groove (4711), a tension outer cylinder (473) is movably inserted in the middle of the limiting ring (472), a compression rod (474) is arranged at the sliding clamp of the bottom end of the tension outer cylinder (473), an electric contact head (475) is fixedly mounted at the bottom end of the compression rod (474), a contact receiver (4751) matched with the electric contact head (475) is fixedly mounted on the inner lower wall of the longitudinal sliding groove (4711), the electric contact head (475) is in contact with the contact receiver (4751), and the upper surface of the tension outer cylinder (473) is in contact with the lower surface of the compression ring (44).
2. The system for monitoring the minute vibration of a bolt according to claim 1, wherein: the head movable joint of connecting bolt (2) is in positioning sleeve (42), two fixed protruding (49) of symmetric distribution are installed to the bottom fixed mounting of monitoring urceolus (41), fixed recess (101) that cooperation of protruding (49) was used with the fixed are offered to the upper surface of waiting connecting piece (1), fixed protruding (49) movable joint is in fixed recess (101) that correspond.
3. The system for monitoring the minute vibration of a bolt according to claim 2, wherein: the torsion monitoring assembly (46) comprises a fixing frame (461) and side pressure plates (463), the fixing frame (461) is fixedly arranged on one side of the inner lower wall of the monitoring cavity (411), the side pressure plates (463) are symmetrically distributed, the two side pressure plates (463) are respectively and vertically arranged at two end parts of the arc plate (45), and signal receivers (462) corresponding to the side pressure plates (463) are fixedly arranged at the top ends of the fixing frame (461).
4. The system for monitoring the minute vibration of a bolt according to claim 2, wherein: the bottom fixing clip of indulging spout (4711) is equipped with lantern ring (476), the middle part of lantern ring (476) is run through in tension urceolus (473) activity, the fixed cover in outside middle part of tension urceolus (473) is equipped with tension ring (477), be equipped with first tension spring (478) between tension ring (477) bottom and lantern ring (476) top, fixed mounting has second tension spring (479) between the interior upper wall of top and tension urceolus (473) of depression bar (474).
5. The system for monitoring the minute vibration of a bolt according to claim 2, wherein: seal assembly (5) are including sealed urceolus (51), the top middle part integrated into one piece of sealed urceolus (51) has sealed pipe (52), sealed urceolus (51) activity cup joints in the outside of monitoring urceolus (41), sealed pipe (52) activity cup joints in the outside of force transmission pipe (43), expansion groove (511) have been seted up to the bottom of sealed urceolus (51), the bottom slip card of expansion groove (511) is equipped with sealed intubate (53), the top of sealed intubate (53) and the interior upper wall fixed mounting of expansion groove (511) have third tension spring (54), the bottom fixed mounting of sealed intubate (53) has sealing washer (55), the lower surface of sealing washer (55) and the upper surface contact of waiting connecting piece (1), recess groove (521) that cooperate the use with sealed pipe (52) are seted up to the lower surface of location sleeve (42), the top activity card of sealed pipe (52) is in recess groove (521).
6. The system for monitoring the minute vibration of a bolt according to claim 5, wherein: the outer wall of the positioning sleeve (42) is fixedly provided with a reset pointer (48), and the upper surface of the monitoring outer cylinder (41) is provided with a reset groove (481) matched with the reset pointer (48).
7. The system for monitoring the minute vibration of a bolt according to claim 6, wherein: the top end fixing clamp of the sealing outer barrel (51) is provided with a transparent window (56), and the position of the transparent window (56) corresponds to the position of the reset groove (481) vertically.
8. The system for monitoring the minute vibration of a bolt according to claim 1, wherein: the micro vibration monitoring system of the bolt comprises a torsion monitoring module, a tension monitoring module and a sealing module.
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| CN202310437855.XA CN117804749B (en) | 2023-04-21 | 2023-04-21 | Micro-vibration monitoring system for bolts |
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| CN202310437855.XA CN117804749B (en) | 2023-04-21 | 2023-04-21 | Micro-vibration monitoring system for bolts |
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