CN113839584A - Prestress bistable state galloping energy collecting device - Google Patents
Prestress bistable state galloping energy collecting device Download PDFInfo
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- CN113839584A CN113839584A CN202111366389.8A CN202111366389A CN113839584A CN 113839584 A CN113839584 A CN 113839584A CN 202111366389 A CN202111366389 A CN 202111366389A CN 113839584 A CN113839584 A CN 113839584A
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- 239000002184 metal Substances 0.000 claims abstract description 179
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- 230000000149 penetrating effect Effects 0.000 claims description 21
- 238000002955 isolation Methods 0.000 claims description 13
- 239000002131 composite material Substances 0.000 claims description 9
- 239000002657 fibrous material Substances 0.000 claims description 9
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- 229910000831 Steel Inorganic materials 0.000 claims description 4
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
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- 239000012530 fluid Substances 0.000 abstract description 8
- 230000008878 coupling Effects 0.000 description 3
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- 238000005859 coupling reaction Methods 0.000 description 3
- 230000002337 anti-port Effects 0.000 description 2
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- 238000005381 potential energy Methods 0.000 description 2
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Abstract
The invention relates to a galloping energy collecting device, in particular to a prestress bistable state galloping energy collecting device. The invention solves the problems that the traditional galloping energy collecting device has lower energy collecting efficiency in low-speed and variable-speed fluid and can generate electromagnetic interference in the process of widening the working flow velocity range. A prestress bistable state galloping energy collecting device comprises a fixed support, a prestress adjusting mechanism and an energy conversion mechanism; the fixed support comprises a metal square rod A, a metal square rod B, a metal square rod C, a metal square rod D, six connecting angle pieces, six pairs of square head bolts A and six pairs of compression nuts A; the prestress adjusting mechanism comprises a clamping seat A, two square-head bolts B, two compression nuts B, an adjusting seat, four fastening bolts A, an adjusting slide block, two bearings, an adjusting screw rod, an adjusting knob, two guide rods, a clamping seat B and two fastening bolts B. The invention is suitable for galloping energy collection.
Description
Technical Field
The invention relates to a galloping energy collecting device, in particular to a prestress bistable state galloping energy collecting device.
Background
Relaxation is a typical flow-induced vibration phenomenon that can be regarded as a divergent self-excited excitation, causing the amplitude of the structure to increase continuously with time, and therefore the energy contained therein is considerable. To utilize the energy contained in the galloping, galloping energy collection devices have received much attention. However, in practical applications, the conventional galloping energy collecting device has the following problems: first, the conventional galloping energy harvesting devices suffer from low energy harvesting efficiency in low speed and variable speed fluids due to the high natural frequency. Secondly, due to the adoption of the magnetic coupling principle, the conventional galloping energy collecting device can generate electromagnetic interference in the process of widening the working flow velocity range, thereby influencing the normal use of electronic elements connected with the galloping energy collecting device. Therefore, a pre-stressed bistable galloping energy collecting device is needed to be invented to solve the problems that the traditional galloping energy collecting device has low energy collecting efficiency in low-speed and variable-speed fluids and can generate electromagnetic interference in the process of widening the working flow speed range.
Disclosure of Invention
The invention provides a prestressed bistable galloping energy collecting device, aiming at solving the problems that the energy collecting efficiency of the traditional galloping energy collecting device in low-speed and variable-speed fluid is low and electromagnetic interference is generated in the process of widening the working flow speed range.
The invention is realized by adopting the following technical scheme:
a prestress bistable state galloping energy collecting device comprises a fixed support, a prestress adjusting mechanism and an energy conversion mechanism;
the fixed support comprises a metal square rod A, a metal square rod B, a metal square rod C, a metal square rod D, six connecting angle pieces, six pairs of square head bolts A and six pairs of compression nuts A;
the metal square rod A and the metal square rod B are both transversely arranged; the metal square bar C is longitudinally arranged; the front end surface of the metal square rod C is contacted with the middle part of the rear side surface of the metal square rod A; the rear end face of the metal square rod C is in contact with the middle of the front side face of the metal square rod B; the metal square rod D is vertically arranged, and the lower end face of the metal square rod D is in contact with the middle of the upper side face of the metal square rod C; a strip-shaped sliding groove is formed in each of the four side surfaces of the metal square rod A, the four side surfaces of the metal square rod B, the four side surfaces of the metal square rod C and the four side surfaces of the metal square rod D along the length direction; the groove cavity of each strip-shaped sliding groove is an inverted T-shaped groove cavity;
a pair of outer side surfaces of the first connecting corner piece are respectively contacted with the rear side surface of the metal square rod A and the left side surface of the metal square rod C, and a pair of connecting strip holes of the first connecting corner piece are respectively corresponding to the strip-shaped sliding groove on the rear side surface of the metal square rod A and the strip-shaped sliding groove on the left side surface of the metal square rod C; a pair of outer side surfaces of the second connecting corner piece are respectively contacted with the rear side surface of the metal square rod A and the right side surface of the metal square rod C, and a pair of connecting strip holes of the second connecting corner piece are respectively corresponding to the strip-shaped sliding groove on the rear side surface of the metal square rod A and the strip-shaped sliding groove on the right side surface of the metal square rod C; a pair of outer side surfaces of the third connecting corner piece are respectively contacted with the front side surface of the metal square rod B and the left side surface of the metal square rod C, and a pair of connecting strip holes of the third connecting corner piece are respectively corresponding to the strip-shaped sliding groove on the front side surface of the metal square rod B and the strip-shaped sliding groove on the left side surface of the metal square rod C; a pair of outer side surfaces of the fourth connecting corner piece are respectively contacted with the front side surface of the metal square rod B and the right side surface of the metal square rod C, and a pair of connecting strip holes of the fourth connecting corner piece are respectively corresponding to the strip-shaped sliding groove on the front side surface of the metal square rod B and the strip-shaped sliding groove on the right side surface of the metal square rod C; a pair of outer side surfaces of the fifth connecting angle piece are respectively contacted with the upper side surface of the metal square rod C and the front side surface of the metal square rod D, and a pair of connecting strip holes of the fifth connecting angle piece are respectively corresponding to the strip-shaped sliding groove on the upper side surface of the metal square rod C and the strip-shaped sliding groove on the front side surface of the metal square rod D; a pair of outer side surfaces of the sixth connecting angle piece are respectively contacted with the upper side surface of the metal square rod C and the rear side surface of the metal square rod D, and a pair of connecting strip holes of the sixth connecting angle piece are respectively corresponding to the strip-shaped sliding groove on the upper side surface of the metal square rod C and the strip-shaped sliding groove on the rear side surface of the metal square rod D;
the head parts of the first square-head bolts A are respectively and slidably embedded in the groove cavities of the strip-shaped sliding groove on the rear side surface of the metal square rod A and the strip-shaped sliding groove on the left side surface of the metal square rod C, and the first square-head bolts A respectively penetrate through a pair of connecting strip holes of the first connecting corner piece; the head of the second square-head bolt A is respectively and slidably embedded in a groove cavity of the strip-shaped chute on the rear side surface of the metal square rod A and the strip-shaped chute on the right side surface of the metal square rod C, and the second square-head bolt A respectively penetrates through a pair of connecting strip holes of the second connecting corner fitting; the head of a third counter stud A is respectively and slidably embedded in a groove cavity of the strip-shaped sliding groove on the front side surface of the metal square rod B and the strip-shaped sliding groove on the left side surface of the metal square rod C, and the third counter stud A respectively penetrates through a pair of connecting strip holes of a third connecting corner fitting; the head of a fourth counter stud A is respectively and slidably embedded in a groove cavity of the strip-shaped sliding groove on the front side surface of the metal square rod B and the strip-shaped sliding groove on the right side surface of the metal square rod C, and the fourth counter stud A respectively penetrates through a pair of connecting strip holes of a fourth connecting corner piece; the head of a fifth counter bolt A is respectively and slidably embedded in a groove cavity of the strip-shaped chute on the upper side surface of the metal square rod C and the strip-shaped chute on the front side surface of the metal square rod D, and the fifth counter bolt A respectively penetrates through a pair of connecting strip holes of a fifth connecting corner piece; the head of a sixth butt bolt A is respectively and slidably embedded in a groove cavity of the strip-shaped sliding groove on the upper side surface of the metal square rod C and the strip-shaped sliding groove on the rear side surface of the metal square rod D, and the sixth butt bolt A respectively penetrates through a pair of connecting strip holes of a sixth connecting corner piece; six pairs of compression nuts A are screwed on the tail ends of six pairs of head bolts A in a one-to-one correspondence manner;
the prestress adjusting mechanism comprises a clamping seat A, two square-head bolts B, two compression nuts B, an adjusting seat, four fastening bolts A, an adjusting slide block, two bearings, an adjusting screw rod, an adjusting knob, two guide rods, a clamping seat B and two fastening bolts B;
the clamping seat A comprises a runway-shaped longitudinal vertical plate, a rectangular longitudinal vertical plate extending from the front end surface of the runway-shaped longitudinal vertical plate, and two convex blocks extending from the right side surface of the rectangular longitudinal vertical plate and arranged up and down; the left side surface of the runway-shaped longitudinal vertical plate is in contact with the right side surface of the metal square rod D; two assembly holes A which are arranged up and down and four assembly holes B which are arranged in a rectangular shape are arranged between the left side surface and the right side surface of the runway-shaped longitudinal vertical plate in a run-through manner; the two assembling holes A correspond to the strip-shaped sliding grooves on the right side face of the metal square rod D; a clamping groove A is formed between the front side face and the rear side face of each bump in a penetrating manner, and the notches of the two clamping grooves A are opposite up and down;
the heads of the two square-head bolts B are slidably embedded in the groove cavities of the strip-shaped sliding grooves on the right side surface of the metal square rod D, and the two square-head bolts B respectively penetrate through the two assembling holes A; the two compression nuts B are respectively screwed on the tail ends of the two square-head bolts B;
the adjusting seat comprises a square longitudinal vertical plate and two convex edges which are arranged in front and back and extend on the right side surface of the square longitudinal vertical plate; the left side surface of the square longitudinal vertical plate is in contact with the right side surface of the runway-shaped longitudinal vertical plate of the clamping seat A; two vertically arranged screw holes A are formed between the right side face of each convex edge and the left side face of the square longitudinal vertical plate in a penetrating manner, and the four screw holes A are opposite to the four assembling holes B one by one; a supporting hole is formed between the middle part of the front side surface and the middle part of the rear side surface of each convex edge in a penetrating manner, and the two supporting holes are opposite to each other in the front-back direction; the rear side surface of the first convex edge and the front side surface of the second convex edge are respectively provided with two supporting grooves which are arranged up and down;
the four fastening bolts A penetrate through the four assembling holes B in a one-to-one correspondence manner, and the tail ends of the four fastening bolts A are screwed in the four screw holes A in a one-to-one correspondence manner;
the left side surface of the adjusting slide block is contacted with the right side surface of the square longitudinal vertical plate of the adjusting seat; two screw holes B which are arranged up and down are arranged between the left side surface and the right side surface of the adjusting slide block in a run-through way; a screw hole C and two guide holes which are arranged up and down are arranged between the front side surface and the rear side surface of the adjusting slide block in a run-through manner;
the adjusting screw rod penetrates through the screw hole C, and two ends of the adjusting screw rod are rotatably supported in the two supporting holes through two bearings respectively;
the adjusting knob is coaxially fixed on the rear end face of the adjusting screw rod;
the two guide rods respectively penetrate through the two guide holes; the front ends of the two guide rods are respectively inserted into the two supporting grooves on the first rib; the rear ends of the two guide rods are respectively inserted into the two supporting grooves on the second rib;
the clamping seat B comprises a square longitudinal vertical plate, a rectangular longitudinal vertical plate and a convex block, wherein the rectangular longitudinal vertical plate extends from the front end face of the square longitudinal vertical plate, and the convex block extends from the left side face of the rectangular longitudinal vertical plate; the left side surface of the square longitudinal vertical plate is in contact with the right side surface of the adjusting slide block; two vertically arranged assembling holes C are formed between the left side face and the right side face of the square longitudinal vertical plate in a penetrating manner, and the two assembling holes C are respectively opposite to the two screw holes B; a clamping groove B with a forward notch is formed between the upper side surface and the lower side surface of the lug in a penetrating manner, and the upper end and the lower end of the clamping groove B respectively correspond to the notches of the two clamping grooves A;
the two fastening bolts B respectively penetrate through the two assembling holes C, and the tail ends of the two fastening bolts B are respectively screwed in the two screw holes B;
the energy conversion mechanism comprises an elastic beam, a pair of piezoelectric composite fiber material sheets, a square-cylindrical blunt body and a connecting seat;
the elastic beam is longitudinally arranged; two isolation gaps which are arranged along the length direction and are vertically arranged are arranged between the left side surface and the right side surface of the elastic beam in a penetrating way; the front ends of the two isolation gaps are closed, and the rear ends of the two isolation gaps penetrate through the rear end face of the elastic beam; the elastic beam is divided into an upper beam section, a middle beam section and a lower beam section by the two isolation gaps; the rear ends of the upper beam section and the lower beam section are respectively fixedly embedded in the two clamping grooves A; the rear end of the middle beam section is fixedly embedded in the clamping groove B;
the pair of piezoelectric composite fiber material sheets are adhered and fixed to the left side surface and the right side surface of the middle beam section of the elastic beam in a left-right symmetrical mode respectively;
the square column blunt body is vertical setting, and the square column blunt body is fixed in the front end of elastic beam through the connecting seat.
When the device works, a pair of piezoelectric composite fiber material sheets are connected with an external circuit through a lead, and then prestress is applied to the elastic beam (the specific steps of applying the prestress are that the adjusting knob is rotated in the forward direction and drives the adjusting screw to rotate in the forward direction, the adjusting screw drives the adjusting slide block to move forward, the adjusting slide block drives the clamping seat B to move forward, and the clamping seat B extrudes the middle beam section of the elastic beam forward, so that the middle beam section of the elastic beam is bent to a certain degree, and a bistable structure is formed), and then the prestress bistable relaxation vibration energy collecting device is placed in fluid. When fluid flows through the square-cylindrical blunt body, a relaxation vibration force with a negative damping effect is generated. Under the effect of galloping, the intermediate beam section of elastic beam produces transverse vibration to frequently jump between two stable states, make a pair of piezoelectricity composite fiber material piece produce the buckling state from this, thereby will be strained energy by a wide margin and convert into the electric energy, and then realized galloping energy collection. In the process, the magnitude of the prestress can be adjusted by rotating the adjusting knob, so that the spacing of the bistable potential energy wells is changed. The specific adjustment process is as follows: if the prestress needs to be increased, the adjusting knob continues to rotate in the forward direction, the adjusting knob continues to drive the adjusting screw to rotate in the forward direction, the adjusting screw continues to drive the adjusting slide block to move forwards, and the adjusting slide block continues to drive the clamping seat B to move forwards, so that the extrusion force applied to the middle beam section of the elastic beam is increased, the buckling degree of the middle beam section of the elastic beam is increased, and the prestress is increased. If reduce prestressing force, then the antiport adjust knob, adjust knob drives adjusting screw antiport, and adjusting screw drives adjusting block rearward movement, and adjusting block drives holder B rearward movement, makes the extrusion force that the centre sill section of elastic beam received reduce from this to make the buckling degree of the centre sill section of elastic beam reduce, and then make prestressing force reduce.
Based on the process, compared with the traditional galloping energy collecting device, the prestress bistable galloping energy collecting device has the following advantages: firstly, the invention widens the flow velocity range for realizing large-amplitude vibration response by utilizing the prestress bistable state, thereby reducing the potential energy barrier height and the coupling frequency. Therefore, in low-speed and variable-speed fluid, the invention can realize large-amplitude interwell vibration response and convert large-amplitude vibration energy into electric energy, thereby effectively widening the working flow velocity range and effectively improving the energy collection efficiency. Secondly, the invention does not adopt the magnetic coupling principle any more, thereby avoiding the generation of electromagnetic interference in the process of widening the working flow velocity range, and effectively ensuring the normal use of the electronic element connected with the electromagnetic interference.
The galloping energy collecting device is reasonable in structure and ingenious in design, effectively solves the problems that the energy collecting efficiency of a traditional galloping energy collecting device in low-speed and variable-speed fluid is low, and electromagnetic interference can be generated in the process of widening the working flow speed range, and is suitable for galloping energy collection.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view of the left side view of fig. 1 rotated 90 degrees counterclockwise.
Fig. 3 is a schematic view of the right side view of fig. 1 rotated 90 degrees counterclockwise.
Fig. 4 is a top view of fig. 1.
Fig. 5 is a schematic structural view of the prestress adjusting mechanism in the present invention.
Fig. 6 is a left side view of fig. 5.
Fig. 7 is a right side view of fig. 5.
Fig. 8 is a top view of fig. 5.
Fig. 9 is a schematic structural view of the holder a of the present invention.
Fig. 10 is a left side view of fig. 9.
Fig. 11 is a right side view of fig. 9.
Fig. 12 is a top view of fig. 9.
Fig. 13 is a schematic structural view of an adjusting seat, an adjusting slider, a bearing, an adjusting screw, an adjusting knob and a guide rod in the invention.
Fig. 14 is a left side view of fig. 13.
Fig. 15 is a right side view of fig. 13.
Fig. 16 is a top view of fig. 13.
Fig. 17 is a schematic view of the structure of the adjusting seat in the present invention.
Fig. 18 is a left side view of fig. 17.
Fig. 19 is a right side view of fig. 17.
Fig. 20 is a top view of fig. 17.
Fig. 21 is a schematic structural view of an adjustment slider in the present invention.
Fig. 22 is a left side view of fig. 21.
Fig. 23 is a right side view of fig. 21.
Fig. 24 is a top view of fig. 21.
FIG. 25 is a schematic view of the holder B according to the present invention.
Fig. 26 is a left side view of fig. 25.
Fig. 27 is a right side view of fig. 25.
Fig. 28 is a top view of fig. 25.
FIG. 29 is a schematic view of the structure of the bearing, adjusting screw and adjusting knob of the present invention.
Fig. 30 is a schematic view of the structure of the elastic beam in the present invention.
Fig. 31 is a schematic structural view of the connecting socket of the present invention.
Fig. 32 is a left side view of fig. 31.
Fig. 33 is a top view of fig. 31.
In the figure: 101-metal square bar a, 102-metal square bar B, 103-metal square bar C, 104-metal square bar D, 105-connecting angle piece, 106-square head bolt a, 107-compression nut a, 108-strip chute, 201-clamping seat a, 202-square head bolt B, 203-compression nut B, 204-adjusting seat, 205-fastening bolt a, 206-adjusting slide block, 207-bearing, 208-adjusting screw, 209-adjusting knob, 210-guide rod, 211-clamping seat B, 212-fastening bolt B, 213-assembly hole a, 214-assembly hole B, 215-clamping groove a, 216-screw hole a, 217-support hole, 218-screw hole B, 219-screw hole C, 220-guide hole, 221-assembly hole C, 222-clamping groove B, 301-elastic beam, 302-piezoelectric composite fiber material sheet, 303-square column blunt body, 304-isolation gap, 305-connecting seat, 306-connecting groove.
Detailed Description
A prestress bistable state galloping energy collecting device comprises a fixed support, a prestress adjusting mechanism and an energy conversion mechanism;
the fixed support comprises a metal square rod A101, a metal square rod B102, a metal square rod C103, a metal square rod D104, six connecting angle pieces 105, six pairs of square head bolts A106 and six pairs of compression nuts A107;
the metal square rod A101 and the metal square rod B102 are both transversely arranged; the metal square bar C103 is arranged longitudinally; the front end surface of the metal square rod C103 is contacted with the middle part of the rear side surface of the metal square rod A101; the rear end face of the metal square rod C103 is contacted with the middle part of the front side face of the metal square rod B102; the metal square rod D104 is vertically arranged, and the lower end face of the metal square rod D104 is in contact with the middle of the upper side face of the metal square rod C103; a strip-shaped sliding groove 108 is formed in each of the four side surfaces of the metal square rod A101, the four side surfaces of the metal square rod B102, the four side surfaces of the metal square rod C103 and the four side surfaces of the metal square rod D104 along the length direction; the groove cavity of each strip-shaped sliding groove 108 is an inverted T-shaped groove cavity;
a pair of outer side surfaces of the first connecting angle piece 105 are respectively contacted with the rear side surface of the metal square rod A101 and the left side surface of the metal square rod C103, and a pair of connecting strip holes of the first connecting angle piece 105 are respectively corresponding to the strip-shaped sliding groove 108 on the rear side surface of the metal square rod A101 and the strip-shaped sliding groove 108 on the left side surface of the metal square rod C103; a pair of outer side surfaces of the second connecting angle piece 105 are respectively contacted with the rear side surface of the metal square rod A101 and the right side surface of the metal square rod C103, and a pair of connecting strip holes of the second connecting angle piece 105 are respectively corresponding to the strip-shaped sliding groove 108 on the rear side surface of the metal square rod A101 and the strip-shaped sliding groove 108 on the right side surface of the metal square rod C103; a pair of outer side surfaces of the third connecting angle piece 105 are respectively contacted with the front side surface of the metal square bar B102 and the left side surface of the metal square bar C103, and a pair of connecting strip holes of the third connecting angle piece 105 are respectively corresponding to the strip-shaped sliding groove 108 on the front side surface of the metal square bar B102 and the strip-shaped sliding groove 108 on the left side surface of the metal square bar C103; a pair of outer side surfaces of the fourth connecting corner piece 105 are respectively contacted with the front side surface of the metal square bar B102 and the right side surface of the metal square bar C103, and a pair of connecting strip holes of the fourth connecting corner piece 105 are respectively corresponding to the strip-shaped sliding groove 108 on the front side surface of the metal square bar B102 and the strip-shaped sliding groove 108 on the right side surface of the metal square bar C103; a pair of outer side surfaces of the fifth connecting angle piece 105 are respectively contacted with the upper side surface of the metal square bar C103 and the front side surface of the metal square bar D104, and a pair of connecting strip holes of the fifth connecting angle piece 105 are respectively corresponding to the strip-shaped sliding groove 108 on the upper side surface of the metal square bar C103 and the strip-shaped sliding groove 108 on the front side surface of the metal square bar D104; a pair of outer side surfaces of the sixth connecting angle piece 105 are respectively contacted with the upper side surface of the metal square bar C103 and the rear side surface of the metal square bar D104, and a pair of connecting bar holes of the sixth connecting angle piece 105 are respectively corresponding to the bar-shaped sliding groove 108 on the upper side surface of the metal square bar C103 and the bar-shaped sliding groove 108 on the rear side surface of the metal square bar D104;
the head parts of the first pair of square head bolts A106 are respectively and slidably embedded in the groove cavities of the strip-shaped sliding groove 108 on the rear side surface of the metal square rod A101 and the strip-shaped sliding groove 108 on the left side surface of the metal square rod C103, and the first pair of square head bolts A106 respectively penetrate through a pair of connecting strip holes of the first connecting angle piece 105; the head of the second square-headed bolt A106 is respectively and slidably embedded in the groove cavities of the strip-shaped chute 108 on the rear side surface of the metal square bar A101 and the strip-shaped chute 108 on the right side surface of the metal square bar C103, and the second square-headed bolt A106 respectively penetrates through a pair of connecting strip holes of the second connecting angle piece 105; the head of the third counter stud A106 is respectively and slidably embedded in the groove cavities of the strip-shaped sliding groove 108 on the front side surface of the metal square rod B102 and the strip-shaped sliding groove 108 on the left side surface of the metal square rod C103, and the third counter stud A106 respectively penetrates through a pair of connecting strip holes of the third connecting angle piece 105; the head of the fourth counter stud A106 is respectively and slidably embedded in the groove cavities of the strip-shaped sliding groove 108 on the front side surface of the metal square rod B102 and the strip-shaped sliding groove 108 on the right side surface of the metal square rod C103, and the fourth counter stud A106 respectively penetrates through a pair of connecting strip holes of the fourth connecting angle piece 105; the head of the fifth counter stud A106 is respectively and slidably embedded in the groove cavities of the strip-shaped sliding groove 108 on the upper side surface of the metal square bar C103 and the strip-shaped sliding groove 108 on the front side surface of the metal square bar D104, and the fifth counter stud A106 respectively penetrates through a pair of connecting strip holes of the fifth connecting angle piece 105; the head of the sixth butt bolt a106 is respectively and slidably embedded in the groove cavities of the strip-shaped chute 108 on the upper side surface of the metal square bar C103 and the strip-shaped chute 108 on the rear side surface of the metal square bar D104, and the sixth butt bolt a106 respectively penetrates through a pair of connecting strip holes of the sixth connecting angle piece 105; six pairs of compression nuts A107 are screwed on the tail ends of six pairs of head bolts A106 in a one-to-one correspondence manner;
the prestress adjusting mechanism comprises a clamping seat A201, two square-head bolts B202, two compression nuts B203, an adjusting seat 204, four fastening bolts A205, an adjusting slider 206, two bearings 207, an adjusting screw 208, an adjusting knob 209, two guide rods 210, a clamping seat B211 and two fastening bolts B212;
the clamping seat A201 comprises a runway-shaped longitudinal vertical plate, a rectangular longitudinal vertical plate extending from the front end face of the runway-shaped longitudinal vertical plate, and two convex blocks extending from the right side face of the rectangular longitudinal vertical plate and arranged up and down; the left side surface of the runway-shaped longitudinal vertical plate is contacted with the right side surface of the metal square rod D104; two assembly holes A213 which are arranged up and down and four assembly holes B214 which are arranged in a rectangular shape are arranged between the left side surface and the right side surface of the runway-shaped longitudinal vertical plate in a run-through manner; the two assembly holes A213 correspond to the strip-shaped sliding grooves 108 on the right side surface of the metal square rod D104; a clamping groove A215 is formed between the front side face and the rear side face of each bump in a penetrating manner, and the notches of the two clamping grooves A215 are opposite up and down;
the heads of the two square-head bolts B202 are slidably embedded in the groove cavities of the strip-shaped sliding grooves 108 on the right side surface of the metal square rod D104, and the two square-head bolts B202 penetrate through the two assembling holes A213 respectively; the two compression nuts B203 are respectively screwed on the tail ends of the two square-head bolts B202;
the adjusting seat 204 comprises a square vertical plate and two convex edges which are arranged in front and back and extend on the right side of the square vertical plate; the left side surface of the square longitudinal vertical plate is in contact with the right side surface of the runway-shaped longitudinal vertical plate of the clamping seat A201; two vertically arranged screw holes A216 are formed between the right side face of each convex rib and the left side face of the square longitudinal vertical plate in a penetrating manner, and the four screw holes A216 are opposite to the four assembling holes B214 one by one; a supporting hole 217 is formed between the middle part of the front side surface and the middle part of the rear side surface of each convex edge in a penetrating manner, and the two supporting holes 217 are opposite to each other front and back; the rear side surface of the first convex edge and the front side surface of the second convex edge are respectively provided with two supporting grooves which are arranged up and down;
the four fastening bolts A205 penetrate through the four assembling holes B214 in a one-to-one correspondence manner, and the tail ends of the four fastening bolts A205 are screwed in the four screw holes A216 in a one-to-one correspondence manner;
the left side surface of the adjusting slide block 206 is contacted with the right side surface of the square longitudinal vertical plate of the adjusting seat 204; two screw holes B218 which are arranged up and down are arranged between the left side surface and the right side surface of the adjusting slide block 206 in a penetrating way; a screw hole C219 and two guide holes 220 which are arranged up and down are arranged between the front side surface and the rear side surface of the adjusting slide block 206 in a penetrating way;
the adjusting screw 208 penetrates through the screw hole C219, and two ends of the adjusting screw 208 are rotatably supported in the two support holes 217 through two bearings 207 respectively;
the adjusting knob 209 is coaxially fixed on the rear end surface of the adjusting screw 208;
the two guide rods 210 respectively penetrate through the two guide holes 220; the front ends of the two guide rods 210 are respectively inserted into the two supporting grooves on the first rib; the rear ends of the two guide rods 210 are respectively inserted into the two supporting grooves on the second rib;
the clamping seat B211 comprises a square longitudinal vertical plate, a rectangular longitudinal vertical plate extending from the front end face of the square longitudinal vertical plate, and a convex block extending from the left side face of the rectangular longitudinal vertical plate; the left side surface of the square vertical plate is contacted with the right side surface of the adjusting slide block 206; two vertically arranged assembly holes C221 are formed between the left side face and the right side face of the square longitudinal vertical plate in a penetrating manner, and the two assembly holes C221 are respectively opposite to the two screw holes B218; a clamping groove B222 with a forward notch is formed between the upper side surface and the lower side surface of the bump in a penetrating manner, and the upper end and the lower end of the clamping groove B222 respectively correspond to the notches of the two clamping grooves A215;
the two fastening bolts B212 respectively penetrate through the two assembly holes C221, and the tail ends of the two fastening bolts B212 are respectively screwed into the two screw holes B218;
the energy conversion mechanism comprises an elastic beam 301, a pair of piezoelectric composite fiber material sheets 302, a square cylindrical blunt body 303 and a connecting seat 305;
the elastic beam 301 is arranged longitudinally; two isolation gaps 304 which are arranged along the length direction and are vertically arranged are arranged between the left side surface and the right side surface of the elastic beam 301 in a penetrating manner; the front ends of the two isolation gaps 304 are closed, and the rear ends of the two isolation gaps penetrate through the rear end face of the elastic beam 301; the elastic beam 301 is divided into an upper beam section, a middle beam section and a lower beam section by two isolation gaps 304; the rear ends of the upper beam section and the lower beam section are respectively fixedly embedded in the two clamping grooves A215; the rear end of the middle beam section is fixedly embedded in the clamping groove B222;
a pair of piezoelectric composite fiber material pieces 302 are respectively adhered and fixed on the left side surface and the right side surface of the middle beam section of the elastic beam 301 in a left-right symmetry manner;
the square column blunt body 303 is vertically arranged, and the square column blunt body 303 is fixed at the front end of the elastic beam 301 through the connecting seat 305.
The clamping seat A201 and the clamping seat B211 are both made of polylactic acid.
The adjusting seat 204, the adjusting slider 206, the bearing 207, the adjusting screw 208, the adjusting knob 209 and the guide rod 210 are all made of steel.
The fastening bolt A205 and the fastening bolt B212 are both hexagon socket head cap bolts; the bearing 207 is a ball bearing.
The elastic beam 301 is a steel elastic beam or a copper elastic beam.
The square-cylindrical blunt body 303 is made of polylactic acid or polystyrene foam plastic.
The connecting base 305 comprises a rectangular transverse vertical plate and a convex edge which is arranged on the rear side surface of the rectangular transverse vertical plate in an extending manner and is vertically arranged; the front side surface of the rectangular transverse vertical plate is fixed with the middle part of the rear side surface of the square column blunt body 303; a connecting groove 306 with a backward notch is formed between the upper end surface and the lower end surface of the convex edge in a penetrating way; the front end of the elastic beam 301 is fixedly embedded in the connecting groove 306.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that these are by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (7)
1. A prestressed bistable state galloping energy collecting device is characterized in that: the device comprises a fixed support, a prestress adjusting mechanism and an energy conversion mechanism;
the fixed support comprises a metal square rod A (101), a metal square rod B (102), a metal square rod C (103), a metal square rod D (104), six connecting angle pieces (105), six pairs of square head bolts A (106) and six pairs of compression nuts A (107);
the metal square rod A (101) and the metal square rod B (102) are transversely arranged; the metal square bar C (103) is arranged longitudinally; the front end surface of the metal square rod C (103) is contacted with the middle part of the rear side surface of the metal square rod A (101); the rear end face of the metal square rod C (103) is contacted with the middle part of the front side face of the metal square rod B (102); the metal square rod D (104) is vertically arranged, and the lower end face of the metal square rod D (104) is in contact with the middle of the upper side face of the metal square rod C (103); a strip-shaped sliding groove (108) is formed in each of the four side surfaces of the metal square rod A (101), the four side surfaces of the metal square rod B (102), the four side surfaces of the metal square rod C (103) and the four side surfaces of the metal square rod D (104) along the length direction; the groove cavity of each strip-shaped sliding groove (108) is an inverted T-shaped groove cavity;
a pair of outer side surfaces of the first connecting angle piece (105) are respectively contacted with the rear side surface of the metal square rod A (101) and the left side surface of the metal square rod C (103), and a pair of connecting strip holes of the first connecting angle piece (105) respectively correspond to the strip-shaped sliding groove (108) on the rear side surface of the metal square rod A (101) and the strip-shaped sliding groove (108) on the left side surface of the metal square rod C (103); a pair of outer side surfaces of the second connecting angle piece (105) are respectively contacted with the rear side surface of the metal square rod A (101) and the right side surface of the metal square rod C (103), and a pair of connecting strip holes of the second connecting angle piece (105) respectively correspond to the strip-shaped sliding groove (108) on the rear side surface of the metal square rod A (101) and the strip-shaped sliding groove (108) on the right side surface of the metal square rod C (103); a pair of outer side surfaces of a third connecting angle piece (105) are respectively contacted with the front side surface of the metal square bar B (102) and the left side surface of the metal square bar C (103), and a pair of connecting strip holes of the third connecting angle piece (105) are respectively corresponding to a strip-shaped sliding groove (108) on the front side surface of the metal square bar B (102) and a strip-shaped sliding groove (108) on the left side surface of the metal square bar C (103); a pair of outer side surfaces of a fourth connecting corner piece (105) are respectively contacted with the front side surface of the metal square bar B (102) and the right side surface of the metal square bar C (103), and a pair of connecting strip holes of the fourth connecting corner piece (105) are respectively corresponding to a strip-shaped sliding groove (108) on the front side surface of the metal square bar B (102) and a strip-shaped sliding groove (108) on the right side surface of the metal square bar C (103); a pair of outer side surfaces of a fifth connecting angle piece (105) are respectively contacted with the upper side surface of the metal square bar C (103) and the front side surface of the metal square bar D (104), and a pair of connecting strip holes of the fifth connecting angle piece (105) respectively correspond to a strip-shaped sliding groove (108) on the upper side surface of the metal square bar C (103) and a strip-shaped sliding groove (108) on the front side surface of the metal square bar D (104); a pair of outer side surfaces of a sixth connecting angle piece (105) are respectively contacted with the upper side surface of the metal square bar C (103) and the rear side surface of the metal square bar D (104), and a pair of connecting strip holes of the sixth connecting angle piece (105) respectively correspond to a strip-shaped sliding groove (108) on the upper side surface of the metal square bar C (103) and a strip-shaped sliding groove (108) on the rear side surface of the metal square bar D (104);
the head parts of a first pair of square head bolts A (106) are respectively and slidably embedded in the groove cavities of the strip-shaped sliding groove (108) on the rear side surface of the metal square rod A (101) and the strip-shaped sliding groove (108) on the left side surface of the metal square rod C (103), and the first pair of square head bolts A (106) respectively penetrate through a pair of connecting strip holes of the first connecting corner piece (105); the head of a second butt-head bolt A (106) is respectively and slidably embedded in a groove cavity of a strip-shaped sliding groove (108) on the rear side surface of the metal square rod A (101) and a strip-shaped sliding groove (108) on the right side surface of the metal square rod C (103), and the second butt-head bolt A (106) respectively penetrates through a pair of connecting strip holes of a second connecting corner piece (105); the head parts of the third pair of square head bolts A (106) are respectively and slidably embedded in the groove cavities of the strip-shaped sliding groove (108) on the front side surface of the metal square bar B (102) and the strip-shaped sliding groove (108) on the left side surface of the metal square bar C (103), and the third pair of square head bolts A (106) respectively penetrate through a pair of connecting strip holes of the third connecting corner piece (105); the head parts of the fourth butt bolts A (106) are respectively and slidably embedded in the groove cavities of the strip-shaped sliding groove (108) on the front side surface of the metal square rod B (102) and the strip-shaped sliding groove (108) on the right side surface of the metal square rod C (103), and the fourth butt bolts A (106) respectively penetrate through a pair of connecting strip holes of the fourth connecting corner piece (105); the head parts of the fifth square head bolts A (106) are respectively and slidably embedded in the groove cavities of the strip-shaped sliding groove (108) on the upper side surface of the metal square rod C (103) and the strip-shaped sliding groove (108) on the front side surface of the metal square rod D (104), and the fifth square head bolts A (106) respectively penetrate through a pair of connecting strip holes of the fifth connecting corner piece (105); the head parts of a sixth pair of square head bolts A (106) are respectively and slidably embedded in a groove cavity of a strip-shaped sliding groove (108) on the upper side surface of the metal square rod C (103) and a strip-shaped sliding groove (108) on the rear side surface of the metal square rod D (104), and the sixth pair of square head bolts A (106) respectively penetrate through a pair of connecting strip holes of a sixth connecting angle piece (105); six pairs of compression nuts A (107) are screwed on the tail ends of six pairs of square head bolts A (106) in a one-to-one correspondence manner;
the prestress adjusting mechanism comprises a clamping seat A (201), two square-head bolts B (202), two compression nuts B (203), an adjusting seat (204), four fastening bolts A (205), an adjusting slide block (206), two bearings (207), an adjusting screw rod (208), an adjusting knob (209), two guide rods (210), a clamping seat B (211) and two fastening bolts B (212);
the clamping seat A (201) comprises a runway-shaped longitudinal vertical plate, a rectangular longitudinal vertical plate extending from the front end surface of the runway-shaped longitudinal vertical plate, and two convex blocks extending from the right side surface of the rectangular longitudinal vertical plate and arranged up and down; the left side surface of the runway-shaped longitudinal vertical plate is in contact with the right side surface of the metal square rod D (104); two assembly holes A (213) which are arranged up and down and four assembly holes B (214) which are arranged in a rectangular shape are arranged between the left side surface and the right side surface of the runway-shaped longitudinal vertical plate in a run-through manner; the two assembly holes A (213) correspond to the strip-shaped sliding grooves (108) on the right side surface of the metal square rod D (104); a clamping groove A (215) is formed between the front side surface and the rear side surface of each bump in a penetrating manner, and the notches of the two clamping grooves A (215) are opposite up and down;
the heads of the two square-head bolts B (202) are slidably embedded in a groove cavity of a strip-shaped sliding groove (108) on the right side surface of the metal square rod D (104), and the two square-head bolts B (202) respectively penetrate through the two assembly holes A (213); the two compression nuts B (203) are respectively screwed on the tail ends of the two square-head bolts B (202);
the adjusting seat (204) comprises a square longitudinal vertical plate and two convex edges which are arranged in a front-back manner and extend to the right side of the square longitudinal vertical plate; the left side surface of the square longitudinal vertical plate is in contact with the right side surface of the runway-shaped longitudinal vertical plate of the clamping seat A (201); two vertically arranged screw holes A (216) are formed between the right side face of each convex rib and the left side face of the square longitudinal vertical plate in a penetrating manner, and the four screw holes A (216) are opposite to the four assembling holes B (214) one by one; a supporting hole (217) is formed between the middle part of the front side surface and the middle part of the rear side surface of each convex edge in a penetrating manner, and the two supporting holes (217) are opposite to each other front and back; the rear side surface of the first convex edge and the front side surface of the second convex edge are respectively provided with two supporting grooves which are arranged up and down;
four fastening bolts A (205) penetrate through the four assembling holes B (214) in a one-to-one correspondence manner, and the tail ends of the four fastening bolts A (205) are screwed in the four screw holes A (216) in a one-to-one correspondence manner;
the left side surface of the adjusting slide block (206) is contacted with the right side surface of the square longitudinal vertical plate of the adjusting seat (204); two screw holes B (218) which are arranged up and down are arranged between the left side surface and the right side surface of the adjusting slide block (206); a screw hole C (219) and two guide holes (220) which are vertically arranged are arranged between the front side surface and the rear side surface of the adjusting slide block (206);
the adjusting screw rod (208) penetrates through the screw hole C (219), and two ends of the adjusting screw rod (208) are rotatably supported in the two supporting holes (217) through two bearings (207) respectively;
the adjusting knob (209) is coaxially fixed on the rear end surface of the adjusting screw rod (208);
the two guide rods (210) respectively penetrate through the two guide holes (220); the front ends of the two guide rods (210) are respectively inserted into the two supporting grooves on the first rib; the rear ends of the two guide rods (210) are respectively inserted into the two supporting grooves on the second rib;
the clamping seat B (211) comprises a square longitudinal vertical plate, a rectangular longitudinal vertical plate extending on the front end face of the square longitudinal vertical plate, and a convex block extending on the left side face of the rectangular longitudinal vertical plate; the left side surface of the square vertical plate is contacted with the right side surface of the adjusting slide block (206); two vertically arranged assembly holes C (221) are formed between the left side face and the right side face of the square longitudinal vertical plate in a penetrating manner, and the two assembly holes C (221) are respectively opposite to the two screw holes B (218); a clamping groove B (222) with a forward notch is formed between the upper side surface and the lower side surface of the bump in a penetrating manner, and the upper end and the lower end of the clamping groove B (222) respectively correspond to the notches of the two clamping grooves A (215);
the two fastening bolts B (212) respectively penetrate through the two assembly holes C (221), and the tail ends of the two fastening bolts B (212) are respectively screwed in the two screw holes B (218);
the energy conversion mechanism comprises an elastic beam (301), a pair of piezoelectric composite fiber material sheets (302), a square-cylindrical blunt body (303) and a connecting seat (305);
the elastic beam (301) is arranged longitudinally; two isolation gaps (304) which are arranged along the length direction and are vertically arranged are arranged between the left side surface and the right side surface of the elastic beam (301) in a penetrating way; the front ends of the two isolation gaps (304) are closed, and the rear ends of the two isolation gaps penetrate through the rear end face of the elastic beam (301); the elastic beam (301) is divided into an upper beam section, a middle beam section and a lower beam section by two isolation gaps (304); the rear ends of the upper beam section and the lower beam section are respectively fixedly embedded in the two clamping grooves A (215); the rear end of the middle beam section is fixedly embedded in the clamping groove B (222);
a pair of piezoelectric composite fiber material pieces (302) are adhered and fixed on the left side surface and the right side surface of the middle beam section of the elastic beam (301) in a left-right symmetrical mode respectively;
the square column blunt body (303) is vertically arranged, and the square column blunt body (303) is fixed at the front end of the elastic beam (301) through the connecting seat (305).
2. The prestressed bistable galloping energy harvesting device of claim 1, wherein: the clamping seat A (201) and the clamping seat B (211) are both made of polylactic acid.
3. The prestressed bistable galloping energy harvesting device of claim 1, wherein: the adjusting seat (204), the adjusting slide block (206), the bearing (207), the adjusting screw rod (208), the adjusting knob (209) and the guide rod (210) are all made of steel.
4. The prestressed bistable galloping energy harvesting device of claim 1, wherein: the fastening bolt A (205) and the fastening bolt B (212) are both hexagon socket head bolts; the bearing (207) is a ball bearing.
5. The prestressed bistable galloping energy harvesting device of claim 1, wherein: the elastic beam (301) is a steel elastic beam or a copper elastic beam.
6. The prestressed bistable galloping energy harvesting device of claim 1, wherein: the square-cylindrical blunt body (303) is made of polylactic acid or polystyrene foam plastic.
7. The prestressed bistable galloping energy harvesting device of claim 1, wherein: the connecting seat (305) comprises a rectangular transverse vertical plate and a convex edge which is arranged on the rear side surface of the rectangular transverse vertical plate in an extending mode and is vertically arranged; the front side surface of the rectangular transverse vertical plate is fixed with the middle part of the rear side surface of the square column blunt body (303); a connecting groove (306) with a backward notch is arranged between the upper end surface and the lower end surface of the convex edge in a through way; the front end of the elastic beam (301) is fixedly embedded in the connecting groove (306).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111366389.8A CN113839584B (en) | 2021-11-18 | 2021-11-18 | Prestressing force bistable relaxation energy collecting device |
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| US20160264109A1 (en) * | 2013-11-15 | 2016-09-15 | David Alan Weston | Contact Patch Measurements During Hydroplaning Events |
| CN111342699A (en) * | 2020-04-01 | 2020-06-26 | 太原理工大学 | Dynamic magnetic coupling-based galloping energy collection device |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160264109A1 (en) * | 2013-11-15 | 2016-09-15 | David Alan Weston | Contact Patch Measurements During Hydroplaning Events |
| CN111342699A (en) * | 2020-04-01 | 2020-06-26 | 太原理工大学 | Dynamic magnetic coupling-based galloping energy collection device |
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