CN210464754U - Propeller torsional thrust sensor - Google Patents
Propeller torsional thrust sensor Download PDFInfo
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- CN210464754U CN210464754U CN201921762923.5U CN201921762923U CN210464754U CN 210464754 U CN210464754 U CN 210464754U CN 201921762923 U CN201921762923 U CN 201921762923U CN 210464754 U CN210464754 U CN 210464754U
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Abstract
The utility model provides a propeller torsional thrust sensor, which comprises a sensor body, wherein the sensor body is provided with a propeller fixing structure, a sensor testing structure, a slip ring coil device and a transmission connecting structure; the propeller fixing structure is used for fixedly mounting a propeller; the sensor testing structure comprises a thrust testing component, a torsion testing component and a sensor protection shaft sleeve; the slip ring coil device comprises a slip ring coil body, an aviation plug and an aviation socket which are arranged on one side of the slip ring coil body, a test shaft, a slip ring, a first thrust bearing and a second thrust bearing, wherein the slip ring, the first thrust bearing and the second thrust bearing are arranged on the test shaft; the slip ring coil device is electrically connected with the sensor testing structure; the transmission connecting structure is fixedly arranged on the driving motor. The utility model discloses simple structure controls the convenience, has realized that the screw turns round thrust sensor's full leakproofness, can reach IP68 waterproof grade, and measurement accuracy is high, can use for a long time in aqueous.
Description
Technical Field
The utility model belongs to the technical field of force sensor, concretely relates to screw is turned round thrust sensor.
Background
The propeller torsion and thrust tests of ships usually require long tests in water, which is closest to the real use of the propeller. At present, a resistance strain type force sensor is mostly used for a two-dimensional force sensor which needs to measure both torsion and thrust, a conventional silica gel coating mode is adopted to seal a strain gauge and a circuit thereof, the sealing effect is poor, the existing force sensor is damaged after being soaked in water for a long time, the use is usually only once or several times, the service life is short, and the use times are limited.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a thrust sensor is turned round to screw to the screw of boats and ships among the solution prior art is turned round thrust sensor's sealed effect poor, and life is short, the limited problem of use number of times.
The utility model provides a following technical scheme:
a propeller torsional thrust sensor comprises a sensor body, wherein a propeller fixing structure, a sensor testing structure, a slip ring coil device and a transmission connecting structure are arranged on the sensor body; the propeller fixing structure is used for fixedly mounting a propeller; the sensor testing structure comprises a thrust testing component, a torsion testing component and a sensor protecting shaft sleeve; the thrust testing assembly comprises a thrust testing shaft, a bent beam hole is formed in the thrust testing shaft, a first thrust testing hole, a second thrust testing hole, a third thrust testing hole and a fourth thrust testing hole which are identical in structure are formed in the periphery of the bent beam hole respectively, and the directions of the bent beam hole and the first thrust testing hole, the direction of the second thrust testing hole, the direction of the third thrust testing hole and the direction of the fourth thrust testing hole are identical; the thrust test strain gauge is attached to the inside of the bending beam hole, sealing caps are symmetrically embedded on two sides of the inside of the bending beam hole, and each sealing cap comprises a cap body and a cap inner plug arranged in the cap body; the torsion testing assembly comprises a shear stress measuring shaft and a sealing corrugated pipe, wherein a threading hole is formed in the shear stress measuring shaft, a shear stress testing strain gauge is attached to the outer wall, away from the threading hole, of the shear stress measuring shaft, the sealing corrugated pipe is sleeved on the shear stress measuring shaft, and one end of the sealing corrugated pipe covers one side port of the thrust testing shaft; the sensor protection shaft sleeve is sleeved on the peripheries of the thrust testing component and the torsion testing component in an interference fit manner; the slip ring coil device comprises a slip ring coil body, an aviation plug and an aviation socket which are arranged on one side of the slip ring coil body, a test shaft, a slip ring, a first thrust bearing and a second thrust bearing, wherein the slip ring, the first thrust bearing and the second thrust bearing are arranged on the test shaft; the slip ring coil device is electrically connected with the sensor testing structure; the transmission connecting structure is fixedly arranged on the driving motor.
Further, the propeller fixing structure comprises a fastening bolt and a propeller shaft position, a key groove is formed in the propeller shaft position, and the propeller is fixed in the key groove through the fastening bolt.
Furthermore, a first overload protection groove is formed between the first thrust test hole and the second thrust test hole, the first overload protection groove penetrates through the second thrust test hole and extends to the outer wall of the thrust test shaft, a second overload protection groove is formed between the third thrust test hole and the fourth thrust test hole, the second overload protection groove penetrates through the fourth thrust test hole and extends to the outer wall of the thrust test shaft, and the first overload protection groove and the second overload protection groove are identical in structure.
Further, the test shaft penetrates through the slip ring coil device main body and is connected with the shear stress measuring shaft, and the slip ring is sleeved on the test shaft and is close to the slip ring coil main body; the first thrust bearing is positioned at one end close to the shear stress measuring shaft, the second thrust bearing is positioned at one end close to the slip ring coil device main body, the first thrust bearing and the second thrust bearing are both provided with bearing holes, and the testing shaft is tightly matched in the bearing holes; shaft sleeves sleeved on the test shaft are arranged on two sides of the first thrust bearing and the second thrust bearing; the slip ring coil device further comprises a bearing protection sleeve, wherein the bearing protection sleeve is tightly sleeved on the test shaft and extends to cover the other end of the sensor protection shaft sleeve.
Further, the sealing cover cap further comprises a sealing sleeve, the sealing sleeve is matched with the peripheral threads of the inner plug of the cover cap, and the inner plug of the cover cap and the sealing sleeve are close to the thrust test strain gauge.
Furthermore, a sealing corrugated sleeve with a matched thread is tightly arranged on the inner wall of the sealing corrugated sleeve, an annular groove is formed in the end face, facing the shear stress measuring shaft, of one side of the testing shaft, a bulge is arranged at one end of the sealing corrugated sleeve, and the bulge is matched with the annular groove; the sealing corrugated pipe and the sealing corrugated sleeve are arranged close to the shear stress test strain gauge.
Furthermore, sealing caps on two sides in the bent beam hole are used for sealing and welding the bent beam hole in a laser welding mode; and the sealing corrugated pipe is used for sealing and welding the shear stress measuring shaft in a laser welding mode.
Further, the first overload protection groove of the thrust test shaft outer wall and the second overload protection groove of the thrust test shaft outer wall, to which the second thrust test hole extends, are stepped.
Further, transmission connection structure includes fixed connection spare, be equipped with fixed connection hole and fixed keyway on the fixed connection spare, transmission connection structure passes through fixed connection hole and connects in driving motor's pivot to fasten through fixed keyway.
The utility model has the advantages that:
1. the utility model realizes double-layer sealing of the thrust testing component by arranging the sealing cap and the sealing sleeve matched with the sealing cap in the bent beam hole and sealing in a welding way;
2. the utility model realizes double-layer sealing of the torsion testing component by arranging the sealing corrugated pipe and the sealing corrugated sleeve matched with the sealing corrugated pipe on the shear stress measuring shaft and sealing in a welding way;
3. the utility model discloses a set up the sensor protection axle sleeve in thrust test subassembly and torsion test subassembly's periphery, further protect sensor test structure, improved the sealed effect of protection of device, prolonged the life of device;
4. the utility model discloses a set up the first thrust test hole, second thrust test hole, third thrust test hole and fourth thrust test hole that the direction is the same around crooked roof beam hole, cooperate the overload protection groove, when having strengthened the foil gage deformation degree, realized the protection to the foil gage, measurement accuracy is high;
5. to sum up, the utility model discloses simple structure controls the convenience, has realized that the screw turns round thrust sensor's full leakproofness, reaches IP68 waterproof grade, and measurement accuracy is high, can use for a long time in aqueous.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the overall structure of the present invention;
FIG. 3 is a schematic diagram of the structure of the sensor test of the present invention;
FIG. 4 is a schematic view of the three-dimensional structure of the sensor testing structure of the present invention;
FIG. 5 is a schematic view of the overall structure of the sealing cap of the present invention;
fig. 6 is a schematic structural view of the sealing bellows and the bellows sleeve of the present invention.
The reference signs are:
1. propeller fixing structure, 11, fastening bolts, 12, propeller shaft position, 13, key grooves, 2, sensor testing structure, 21, thrust testing component, 211, thrust testing shaft, 2111, curved beam hole, 2112, first thrust testing hole, 2113, second thrust testing hole, 2114, third thrust testing hole, 2115, fourth thrust testing hole, 212, thrust testing strain gauge, 213, sealing cap, 2131, cap body, 2132, cap inner plug, 2133, sealing sleeve, 214, first overload protection groove, 215, second overload protection groove, 22, torque testing component, 221, shear stress measuring shaft, 222, sealing bellows, 2221, sealing bellows sleeve, 2222, protrusion, 223, threading hole, 224, shear stress testing strain gauge, 23, sensor protection sleeve, 3, slip ring coil device, 31, slip ring coil body, 32, aviation plug, 33 aviation socket, 34. the test shaft comprises a test shaft body 341, a sliding ring body 342, a first thrust bearing body 343, a second thrust bearing body 344, a shaft sleeve 35, a bearing protection sleeve 4, a transmission connection structure 41, a fixed connection piece 42, a fixed connection hole 43 and a fixed key groove.
Detailed Description
As shown in fig. 1-6, a propeller torsional thrust sensor comprises a sensor body, wherein a propeller fixing structure 1, a sensor testing structure 2, a slip ring coil device 3 and a transmission connecting structure 4 are arranged on the sensor body; the propeller fixing structure 1 is used for fixedly mounting a propeller; the sensor testing structure 2 comprises a thrust testing component 21, a torsion testing component 22 and a sensor protecting shaft sleeve 23; the thrust test assembly 21 comprises a thrust test shaft 211, a bent beam hole 2111 is formed in the thrust test shaft 211, a first thrust test hole 2112, a second thrust test hole 2113, a third thrust test hole 2114 and a fourth thrust test hole 2115 which are identical in structure are formed in the periphery of the bent beam hole 2111 respectively, and the directions of the bent beam hole 2111 and the first thrust test hole 2112, the second thrust test hole 2113, the third thrust test hole 2114 and the fourth thrust test hole 2115 are identical; a thrust test strain gauge 212 is attached to the inside of the bent beam hole 2111, sealing caps 213 are symmetrically embedded in two sides of the bent beam hole 2111, and each sealing cap 213 comprises a cap body 2131 and a cap inner plug 2132 arranged in the cap body 2131; the torsion testing assembly 22 comprises a shear stress measuring shaft 221 and a sealing corrugated pipe 222, wherein a threading hole 223 is formed in the shear stress measuring shaft 221, a shear stress testing strain gauge 224 is attached to the outer wall, away from the threading hole 223, of the shear stress measuring shaft 221, the sealing corrugated pipe 222 is sleeved on the shear stress measuring shaft 221, and one end of the sealing corrugated pipe 222 covers one side port of the thrust testing shaft 211; the sensor protection shaft sleeve 23 is sleeved on the peripheries of the thrust testing component 21 and the torsion testing component 22 in an interference fit mode; the slip ring coil device 3 comprises a slip ring coil body 31, an aviation plug 32 and an aviation socket 33 which are arranged on one side of the slip ring coil body 31, a test shaft 34, a slip ring 341, a first thrust bearing 342 and a second thrust bearing 343 which are arranged on the test shaft 34; the slip ring coil device 3 is electrically connected with the sensor testing structure 2; the transmission connecting structure 4 is fixedly arranged on the driving motor.
As shown in fig. 1-6, the propeller fixing structure 1 includes a fastening bolt 11 and a propeller shaft position 12, a key slot is arranged on the propeller shaft position 12, and the propeller is fixed in the key slot 13 through the fastening bolt 11; a first overload protection groove 214 is formed between the first thrust test hole 2112 and the second thrust test hole 2113, the first overload protection groove 214 penetrates through the second thrust test hole 2113 and extends to the outer wall of the thrust test shaft 34211, a second overload protection groove 215 is formed between the third thrust test hole 2114 and the fourth thrust test hole 2115, the second overload protection groove 215 penetrates through the fourth thrust test hole 2115 and extends to the outer wall of the thrust test shaft 34211, and the first overload protection groove 214 and the second overload protection groove 215 are identical in structure; the test shaft 34 penetrates through the slip ring coil main body 31 to be connected with the shear stress measurement shaft 221, and the slip ring 341 is sleeved on the test shaft 34 and is close to the slip ring coil main body 31; the first thrust bearing 342 is located at one end close to the shear stress measuring shaft 221, the second thrust bearing 343 is located at one end close to the slip ring coil body 31, bearing holes are formed in the first thrust bearing 342 and the second thrust bearing 343, and the test shaft 34 is tightly fitted in the bearing holes; shaft sleeves 344 sleeved on the test shaft 34 are arranged on two sides of the first thrust bearing 342 and the second thrust bearing 343; the slip ring coil device 3 further comprises a bearing protection sleeve 35, wherein the bearing protection sleeve 35 is tightly sleeved on the test shaft 34 and extends to cover the other end of the sensor protection shaft sleeve 23; the sealing cap 213 further comprises a sealing sleeve 2133, the sealing sleeve 2133 is in threaded fit with the outer periphery of the cap inner plug 2132, and the cap inner plug 2132 and the sealing sleeve 2133 are arranged close to the thrust test strain gauge 212; a sealing corrugated sleeve 2221 with a thread fit is tightly arranged on the inner wall of the sealing corrugated pipe 222, an annular groove is arranged on the end face of one side of the test shaft 34 facing the shear stress measurement shaft 221, a protrusion 2222 is arranged at one end of the sealing corrugated sleeve 2221, and the protrusion 2222 is matched with the annular groove; the sealing bellows 222 and the sealing bellows sleeve 2221 are disposed proximate to the shear stress test strain gauge 224; the sealing caps 213 on the two sides in the bent beam hole 2111 are used for sealing and welding the bent beam hole 2111 in a laser welding mode; the sealing bellows 222 seals and welds the shear stress measuring shaft 221 in a laser welding manner; the first overload protection groove 214 extending from the second thrust test hole 2113 to the outer wall of the thrust test shaft 34211 and the second overload protection groove 215 extending from the fourth thrust test hole 2115 to the outer wall of the thrust test shaft 34211 are both stepped; the transmission connecting structure 4 comprises a fixed connecting piece, a fixed connecting hole 42 and a fixed key slot 43 are arranged on the fixed connecting piece 41, and the transmission connecting structure 4 is connected to a rotating shaft of the driving motor through the fixed connecting hole 42 and is fastened through the fixed key slot 43.
The working principle is as follows: the propeller is fixedly arranged in a key groove 13 on a propeller shaft position 12 through a fastening bolt 11, and the transmission connecting structure 4 is fixedly arranged on a driving motor; when the torque and the thrust of the propeller during operation are transmitted to the sensor body, the thrust and the torque are measured by the thrust test component 21 and the torque test component 22 in the sensor test structure 2. The utility model realizes the double-layer sealing of the thrust test component 21 by arranging the sealing cap 213 and the sealing sleeve 2133 matched with the sealing cap 213 in the bent beam hole 2111 and sealing in a welding way; the double-layer sealing of the torsion testing assembly 22 is realized by arranging the sealing corrugated pipe 222 and the sealing corrugated sleeve 2221 matched with the sealing corrugated pipe 222 on the shear stress measuring shaft 221 and sealing in a welding manner; the structure of a bent beam hole 2111, a first thrust testing hole 2112, a second thrust testing hole 2113, a third thrust testing hole 2114, a fourth thrust testing hole 2115, an overload protection groove and the like is adopted, so that the deformation degree of the strain gauge is increased, and the measurement precision is high; the sensor protection shaft sleeves 23 are arranged on the peripheries of the thrust testing component 21 and the torsion testing component 22, so that the sensor testing structure 2 is further protected, the integral protection sealing effect of the device is improved, the service life of the device is prolonged, and the device can be used in water for a long time; the thrust test strain gauge 212 is attached to the bent beam hole 2111, the shear stress test strain gauge 224 is attached to the shear stress measurement shaft 221, by adopting the structure, when the propeller works, the generated thrust is transmitted to the thrust test component 21 and the torsion test component 22, the strain is generated by induction of the thrust test component 21 and the torsion test component 22, and the test strain gauges attached to the structure form an electric bridge to perform electric signal conversion of the thrust and the torsion through the slip ring coil device 3; to sum up, the utility model discloses simple structure controls the convenience, has realized that the screw turns round thrust sensor's full leakproofness, reaches IP68 waterproof grade through the test, and measurement accuracy is high, can use for a long time in aqueous.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A propeller torsional thrust sensor comprises a sensor body and is characterized in that a propeller fixing structure, a sensor testing structure, a slip ring coil device and a transmission connecting structure are arranged on the sensor body;
the propeller fixing structure is used for fixedly mounting a propeller;
the sensor testing structure comprises a thrust testing component, a torsion testing component and a sensor protecting shaft sleeve; the thrust testing assembly comprises a thrust testing shaft, a bent beam hole is formed in the thrust testing shaft, a first thrust testing hole, a second thrust testing hole, a third thrust testing hole and a fourth thrust testing hole which are identical in structure are formed in the periphery of the bent beam hole respectively, and the directions of the bent beam hole and the first thrust testing hole, the direction of the second thrust testing hole, the direction of the third thrust testing hole and the direction of the fourth thrust testing hole are identical; the thrust test strain gauge is attached to the inside of the bending beam hole, sealing caps are symmetrically embedded on two sides of the inside of the bending beam hole, and each sealing cap comprises a cap body and a cap inner plug arranged in the cap body; the torsion testing assembly comprises a shear stress measuring shaft and a sealing corrugated pipe, wherein a threading hole is formed in the shear stress measuring shaft, a shear stress testing strain gauge is attached to the outer wall, away from the threading hole, of the shear stress measuring shaft, the sealing corrugated pipe is sleeved on the shear stress measuring shaft, and one end of the sealing corrugated pipe covers one side port of the thrust testing shaft; the sensor protection shaft sleeve is sleeved on the peripheries of the thrust testing component and the torsion testing component in an interference fit manner;
the slip ring coil device comprises a slip ring coil body, an aviation plug and an aviation socket which are arranged on one side of the slip ring coil body, a test shaft, a slip ring, a first thrust bearing and a second thrust bearing, wherein the slip ring, the first thrust bearing and the second thrust bearing are arranged on the test shaft; the slip ring coil device is electrically connected with the sensor testing structure;
the transmission connecting structure is fixedly arranged on the driving motor.
2. The propeller torsional thrust sensor of claim 1, wherein the propeller fixing structure comprises a fastening bolt and a propeller shaft position, a key groove is formed in the propeller shaft position, and the propeller is fixed in the key groove through the fastening bolt.
3. The propeller torsion thrust sensor according to claim 2, wherein a first overload protection groove is formed between the first thrust test hole and the second thrust test hole, the first overload protection groove penetrates through the second thrust test hole and extends to the outer wall of the thrust test shaft, a second overload protection groove is formed between the third thrust test hole and the fourth thrust test hole, the second overload protection groove penetrates through the fourth thrust test hole and extends to the outer wall of the thrust test shaft, and the first overload protection groove and the second overload protection groove are identical in structure.
4. A propeller torsional thrust sensor according to claim 3, wherein the test shaft is connected to the shear stress measurement shaft through the slip ring coil assembly body, the slip ring being sleeved on the test shaft and adjacent to the slip ring coil body; the first thrust bearing is positioned at one end close to the shear stress measuring shaft, the second thrust bearing is positioned at one end close to the slip ring coil device main body, the first thrust bearing and the second thrust bearing are both provided with bearing holes, and the testing shaft is tightly matched in the bearing holes; shaft sleeves sleeved on the test shaft are arranged on two sides of the first thrust bearing and the second thrust bearing; the slip ring coil device further comprises a bearing protection sleeve, wherein the bearing protection sleeve is tightly sleeved on the test shaft and extends to cover the other end of the sensor protection shaft sleeve.
5. The propeller torsional thrust sensor of claim 4, wherein the seal cap further comprises a seal sleeve threadedly engaged with an outer periphery of the cap inner plug, the cap inner plug and the seal sleeve being disposed proximate the thrust test strain gage.
6. The propeller torsional thrust sensor according to claim 5, wherein a sealing corrugated sleeve with a thread fit is tightly arranged on the inner wall of the sealing corrugated sleeve, an annular groove is formed in the end face, facing the shear stress measuring shaft, of the testing shaft, and a protrusion is arranged at one end of the sealing corrugated sleeve and matched with the annular groove; the sealing corrugated pipe and the sealing corrugated sleeve are arranged close to the shear stress test strain gauge.
7. The propeller torsional thrust sensor of claim 6, wherein a sealing rubber ring is further disposed in the annular groove of the shear stress measuring shaft.
8. The propeller torsional thrust sensor of claim 7, wherein the sealing caps on both sides in the bent beam hole are used for sealing and welding the bent beam hole by means of laser welding; and the sealing corrugated pipe is used for sealing and welding the shear stress measuring shaft in a laser welding mode.
9. The propeller torsional thrust sensor of claim 8, wherein the first overload protection groove of the second thrust test hole extending to the outer wall of the thrust test shaft and the second overload protection groove of the fourth thrust test hole extending to the outer wall of the thrust test shaft are stepped.
10. The propeller torsional thrust sensor of claim 9, wherein the transmission connecting structure comprises a fixed connecting piece, the fixed connecting piece is provided with a fixed connecting hole and a fixed key groove, and the transmission connecting structure is connected to a rotating shaft of the driving motor through the fixed connecting hole and is fastened through the fixed key groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921762923.5U CN210464754U (en) | 2019-10-18 | 2019-10-18 | Propeller torsional thrust sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921762923.5U CN210464754U (en) | 2019-10-18 | 2019-10-18 | Propeller torsional thrust sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210464754U true CN210464754U (en) | 2020-05-05 |
Family
ID=70434499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921762923.5U Active CN210464754U (en) | 2019-10-18 | 2019-10-18 | Propeller torsional thrust sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210464754U (en) |
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2019
- 2019-10-18 CN CN201921762923.5U patent/CN210464754U/en active Active
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