CN215794393U - Watertight rudder angle feedback mechanism - Google Patents
Watertight rudder angle feedback mechanism Download PDFInfo
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- CN215794393U CN215794393U CN202122079266.8U CN202122079266U CN215794393U CN 215794393 U CN215794393 U CN 215794393U CN 202122079266 U CN202122079266 U CN 202122079266U CN 215794393 U CN215794393 U CN 215794393U
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- end cover
- watertight
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Abstract
The utility model provides a watertight rudder angle feedback mechanism, which comprises: the end cover is closed at the end of the oil cylinder far away from the plunger; the magnetostrictive displacement sensor extends into an oil filling cavity of the oil cylinder; the waterproof cover shell assembly is fixed on the end cover outside the refueling cavity, and the electronic component of the magnetostrictive displacement sensor is arranged in the waterproof cover shell assembly; the sensor bracket is fixed in the end cover through hole, and the magnetostrictive displacement sensor is fixed on the sensor bracket; the annular magnet is arranged on the plunger in the oiling cavity of the oil cylinder; the controller is connected with the electronic components of the magnetostrictive displacement sensor. The utility model has simple and compact structure and stable and reliable operation, can be applied to a conventional hydraulic steering engine and realizes the function of rudder angle feedback acquisition. Meanwhile, the rudder pushing mechanism is internally provided with a structure and has high protection performance, and the anti-soaking application of the rudder pushing mechanism can be realized.
Description
Technical Field
The utility model relates to a watertight rudder angle feedback mechanism.
Background
The rudder angle feedback mechanism is arranged on the hydraulic steering engine steering mechanism, is used for realizing the real-time rudder angle acquisition function, is an important part for ship course control, and has high requirements on accuracy and reliability indexes.
The rudder angle feedback mechanism of the existing domestic hydraulic steering engine is generally realized by adopting the following two technical schemes:
a. a potentiometer/encoder gear type pull rod feedback mechanism is adopted;
b. a feedback mechanism in the form of a self-angle machine is adopted.
The prior art scheme a has more domestic ships and warships at present, and in the prior art scheme a, because the potentiometer/encoder has mechanical error and abrasion, and the gear type also has inherent phenomena such as gaps, the problems of poor precision and low service life easily occur after long-time use, and because the pull rod type is adopted, the problems of poor impact resistance are solved.
The installation space of the prior art scheme b is not suitable for some rudder pushing mechanisms, and the operation noise is high. And the maintenance cost is high due to the complex structure.
According to the prior art scheme a and b, when the tiller shakes up and down, the stable output of the rudder angle cannot be guaranteed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a watertight rudder angle feedback mechanism.
In order to solve the above problems, the present invention provides a watertight rudder angle feedback mechanism, including:
the end cover is closed at the end, far away from the plunger, of the oil cylinder, and an end cover through hole is formed in the end cover;
the magnetostrictive displacement sensor, magnetostrictive displacement sensor stretches into the volume intracavity that refuels of hydro-cylinder, magnetostrictive displacement sensor includes: an electronic component and a waveguide connected to the electronic component;
the waterproof cover shell assembly is fixed on the end cover outside the refueling cavity, and the electronic component of the magnetostrictive displacement sensor is arranged in the waterproof cover shell assembly;
the sensor bracket is fixed in the end cover through hole, and the magnetostrictive displacement sensor is fixed on the sensor bracket;
the annular magnet is arranged on a plunger inside a refueling cavity of the oil cylinder, the plunger outside the refueling cavity of the oil cylinder is connected with the tiller, and a first magnetic field generated by the magnetostrictive displacement sensor is intersected with a second magnetic field generated by the annular magnet to generate current pulses;
a controller connected to the electronic components of the magnetostrictive displacement sensor.
Further, in the above watertight rudder angle feedback mechanism, the waterproof housing assembly includes:
the waterproof housing is connected with the end cover through a bolt, a watertight cabin is formed in the waterproof housing, the electronic component is arranged in the watertight cabin, and a third sealing ring is arranged at a joint of the waterproof housing and the end cover;
the watertight stuffing box is fixed on a waterproof housing outside the watertight cabin, and an external cable connected with the electronic component penetrates through the watertight stuffing box to be connected with the controller.
Furthermore, in the watertight rudder angle feedback mechanism, the electronic component is fixed on the oil cylinder outside the oil filling cavity, the electronic component is arranged at the end, far away from the plunger, of the oil cylinder, the waveguide tube extends into the oil filling cavity, a gap is arranged between the waveguide tube and the annular magnet, a first magnetic field generated by the waveguide tube and a second magnetic field generated by the annular magnet intersect to generate current pulses, and the electronic component is externally coated with a protective shell; the controller is connected with the electronic component;
and the waveguide tube is arranged in the containing cavity of the pressure-resistant outer tube.
Further, in the above watertight rudder angle feedback mechanism, the sensor mount may include: the pressure-resistant outer tube is arranged in the sleeve, and is arranged in the pressure-resistant outer tube accommodating cavity.
Further, in the watertight rudder angle feedback mechanism, a sealing groove is circumferentially formed in a side wall of a through hole fixing part of the sensor bracket, which is in contact with the end cover through hole, and a first sealing ring is arranged in the sealing groove; a second sealing ring is circumferentially arranged in a gap between the fixing through hole of the fixing part and the pressure-resistant outer pipe; and the joint surface of the end cover and the oil cylinder far away from the plunger end is sealed by a third sealing ring.
Further, in the watertight rudder angle feedback mechanism, a plunger through hole is formed in the tail end of the plunger in the oiling containing cavity, an annular magnet and a magnetic isolation gasket are arranged on the inner side wall of the plunger through hole, the annular magnet and the magnetic isolation gasket are overlapped, through holes are formed in the annular magnet and the magnetic isolation gasket respectively, and the through hole of the annular magnet, the through hole of the magnetic isolation gasket and the plunger through hole are aligned with each other, wherein the annular magnet is arranged close to the side of the proximal end cover, and the magnetic isolation gasket is arranged far away from the side of the end cover;
the sleeve penetrates through the through hole of the annular magnet, the through hole of the magnetism isolating gasket and the through hole of the plunger and extends into the cavity of the plunger, and a circumferential gap is reserved between the sleeve and the annular magnet.
Further, in the watertight rudder angle feedback mechanism, the end cover is axially fixed with the oil cylinder far away from the plunger end through a bolt, the end cover is radially fixed with the oil cylinder far away from the plunger end through a snap ring, and a fixing sleeve ring is sleeved outside the snap ring.
Further, in the watertight rudder angle feedback mechanism, an annular guide lining is arranged on the inner side wall of the oil cylinder, the outer side wall of the annular guide lining is in contact with the inner side wall of the oil cylinder, the inner side wall of the annular guide lining is in contact with the outer side wall of the plunger, and the guide lining is made of a high polymer wear-resistant material; and a V-shaped combined sealing ring is arranged in a gap defined by the guide lining, the outer side wall of the plunger and the inner side wall of the oil cylinder, wherein the V-shaped combined sealing ring is formed by overlapping a plurality of V-shaped sealing rings, and the cross section of each V-shaped sealing ring is V-shaped.
Compared with the prior art, the oil cylinder is connected with the end cover through the waterproof housing through the bolt, the third sealing ring is arranged at the joint of the waterproof housing and the end cover, and the outer side of the watertight cover is provided with the watertight stuffing box line so as to ensure the water tightness of the outer part of the oil cylinder. The function of steering engine rudder angle feedback acquisition can be realized through the magnetostrictive sensor; the magnetostrictive sensor eliminates abrasion and noise by adopting a non-contact watertight rudder angle feedback mechanism, can avoid mechanical errors of a connecting rod type and a self-angle trimming machine, and can also greatly reduce the influence on feedback precision caused by the shaking of a rudder stock in the movement process so as to improve the control precision of the rudder angle; the displacement signal transmitted back by the magnetostrictive sensor is an absolute value signal, the condition of signal drift or value change does not exist, and the displacement sensor does not need to be regularly re-calibrated and maintained like other displacement sensors, so that the problem of repeated adjustment of a feedback mechanism is thoroughly solved. The watertight rudder angle feedback mechanism is arranged in the oil cylinder, so that the influence of the feedback mechanism on the overall dimension of the rudder pushing mechanism can be reduced to the maximum extent, and the compact design of the rudder pushing mechanism is facilitated. The built-in structure ensures the EMC (electromagnetic compatibility) characteristic of the feedback mechanism.
Drawings
FIG. 1 is a schematic structural diagram of a watertight rudder angle feedback mechanism according to an embodiment of the present invention;
FIG. 2 is an enlarged, fragmentary, schematic view of the first region of FIG. 1;
FIG. 3 is an enlarged, fragmentary, schematic view of the second region of FIG. 1;
FIG. 4 is a schematic illustration of a magnetostrictive sensor according to an embodiment of the utility model in a disassembled state;
FIG. 5 is a schematic structural diagram of a sensor holder according to an embodiment of the utility model;
FIG. 6 is a schematic view of a first magnetic field generated by a waveguide of one embodiment of the present invention intersecting a second magnetic field generated by the ring magnet;
FIG. 7 is a schematic view of the connection of the plunger and tiller according to an embodiment of the utility model.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1 to 7, the present invention provides a watertight rudder angle feedback mechanism, including:
the end cover 3 is closed at the end, far away from the plunger 6, of the oil cylinder 5, and an end cover through hole is formed in the end cover 3;
a magnetostrictive displacement sensor 1, said magnetostrictive displacement sensor 1 extending into said refueling cavity 8, said magnetostrictive displacement sensor comprising: an electronic component 9 and a waveguide 10 connected to the electronic component 9;
the waterproof cover shell assembly 40 is fixed on the end cover outside the refueling cavity 8, and the electronic components of the magnetostrictive displacement sensor are arranged in the waterproof cover shell assembly 40;
the sensor support 2 is fixed in the end cover through hole, and the magnetostrictive displacement sensor 1 is fixed on the sensor support;
the annular magnet 4 is arranged on the plunger 6 in the oil filling cavity 8 of the oil cylinder 5, the plunger 6 outside the oil filling cavity 8 of the oil cylinder 5 is connected with the tiller 13, the magnetostrictive displacement sensor 1 generates a first magnetic field 11, and the first magnetic field 11 generated by the magnetostrictive displacement sensor 1 intersects with a second magnetic field 12 generated by the annular magnet 4 to generate current pulses; (ii) a
A controller connected to the electronic components 9 of the magnetostrictive displacement sensor 1.
Here, the magnetostrictive displacement sensor 1 generates a first magnetic field 11, intersects with a second magnetic field 12 generated by the ring magnet 4 to generate a current pulse 38, and the current pulse signal can be output to an external controller through an aviation plug and a cable.
Preferably, the waterproof housing assembly 40 includes:
the waterproof housing 41 is connected with the end cover 3 through a bolt 42, a watertight cabin 42 is formed in the waterproof housing 41, the electronic component 9 is arranged in the watertight cabin 42, and a third sealing ring 43 is arranged at the joint of the waterproof housing 42 and the end cover 3;
the watertight stuffing box 44 is fixed on the waterproof casing 41 outside the watertight cabin 42, and an external cable 45 connected with the electronic component 9 passes through the watertight stuffing box 44 to be connected with the controller.
The waterproof cover is connected with the end cover through the bolt, the third sealing ring is arranged at the joint of the waterproof cover and the end cover, and the outer side of the watertight cover is provided with the watertight stuffing box line so as to ensure the water tightness of the outer part of the oil cylinder.
Preferably, the magnetostrictive displacement sensor includes:
here, the protective case may be a stainless steel material;
a controller connected to the electronic component 9.
Fig. 2 is an enlarged schematic view of the first region 15 in fig. 1, and as shown in fig. 1 and 2, the magnetostrictive displacement sensor 1 further includes a pressure-resistant outer tube 14, and the waveguide 10 is disposed in a cavity of the pressure-resistant outer tube 14 to protect the waveguide 10 against pressure and oil.
The waveguide 10 generates a first magnetic field 11, the electronic component 9 at the tail of the pressure-resistant outer pipe receives the intersection of the first magnetic field 11 generated by the waveguide 10 and the second magnetic field 12 generated by the ring magnet 4 to generate a current pulse 38, and the current pulse signal is output to an external controller through an aviation plug and a cable connected with the electronic component 9.
According to the utility model, a gap is arranged between the waveguide tube 10 and the annular magnet 4, so that the magnetostrictive displacement sensor 1 is not in contact with the plunger 6, and the annular magnet 4 is driven by the plunger 6 to avoid mechanical friction between the annular magnet 4 and the waveguide tube 10 in the axial movement process of the oil filling cavity 8 of the oil cylinder 5.
The watertight rudder angle feedback mechanism provided by the utility model has the advantages of simple and compact structure and stable and reliable operation, and can be applied to a conventional hydraulic steering engine to realize the function of rudder angle feedback acquisition. Meanwhile, due to the built-in structure and the high protection (IP68) characteristic, the rudder pushing mechanism can be applied in a water immersion prevention mode.
The working principle of the utility model is as follows: the electronic component 9 is used for recording the time period required by the detected current pulse, multiplying the time period by a preset speed to obtain the displacement of the annular magnet 4 and sending the displacement of the annular magnet 4 to the controller; the controller receives an input target rudder angle value of the rudder stock 13, calculates a current rudder angle value of the rudder stock 13 based on the displacement of the annular magnet 4, and outputs corresponding hydraulic oil to the oiling containing cavity 8 based on a difference value if the target rudder angle value and the current rudder angle value have the difference value so as to drive the plunger 6 to displace by a corresponding distance. When the ring magnet 4 and the plunger 6 are displaced relative to each other, the first magnetic field 11 and the second magnetic field 12 intersect, and the generated current pulse is transmitted to the sensing coil of the electronic component 9 at a fixed speed of sound. The time period required from the moment when the current pulse is generated to the moment when the current pulse is detected by the sensor coil can be recorded, and the displacement of the ring magnet 4 can be accurately calculated by multiplying the required time period by the fixed speed. The signal picked up by the electronic unit 9 directly reflects the displacement of the plunger, which signals the absolute position of the plunger movement to the controller. The displacement of the plunger can be converted into a rotation angle of the tiller, namely a rudder angle value after the acquisition and operation of the controller. The output signal of the sensor is absolute value, if the power supply is interrupted and reconnected, the problem of data receiving can not be caused, and the zero position does not need to be adjusted again. The sensing assembly is of a non-contact structure, and repeated sensing does not cause any abrasion to the sensor, so that the sensor has the characteristics of high precision, good reliability, no signal drift or value change and the like. The utility model can realize the function of collecting rudder angle signals and can be applied to the conventional hydraulic steering engine with the oil cylinder pressure not more than 35 MPa.
As shown in fig. 1 and 5, preferably, the sensor holder 2 includes: the fixing part 17 and with the sleeve 18 that the fixing part 17 is connected, wherein, the fixing part 17 is fixed in the end cover through-hole, be provided with fixed through-hole on the fixing part 17, the one end of withstand voltage outer tube 14 is fixed in the fixed through-hole of fixing part 17, be provided with withstand voltage outer tube appearance chamber 21 in the sleeve 18, the withstand voltage outer tube 14 of magnetostrictive displacement sensor 1 set up in withstand voltage outer tube appearance chamber 21.
The magnetostrictive displacement sensor 1 is integrated on a sensor support 2 at the tail of an oil cylinder 5 of the rudder pushing mechanism, a waveguide tube carried by the magnetostrictive displacement sensor is arranged in a pressure-resistant outer tube, and the pressure-resistant outer tube is integrally arranged in a sleeve of the sensor support.
The sensor bracket 2 can be fixed with the end cover 3 through a bolt 36 and a mounting screw hole 37 of the sensor bracket 2, on one hand, the sensor bracket 2 plays a role in protecting and supporting the pressure-resistant outer tube 14, on the other hand, the sensor bracket 2 can effectively isolate the oil cylinder accommodating cavity 8 from the pressure-resistant outer tube accommodating cavity 21 through the sleeve 18, so that the magnetostrictive displacement sensor 1 is protected and is not influenced by oil liquid of the oil cylinder; and ensures that the magnetostrictive displacement sensor 1 can be directly detached from the oil cylinder, thereby improving the maintainability.
As shown in fig. 1 and 6, preferably, a sealing groove 22 is circumferentially provided on a sidewall of the through-hole fixing portion 17 of the sensor holder 2 contacting the end cover through-hole, and a first sealing ring 23 is provided in the sealing groove 22;
a second sealing ring 24 is circumferentially arranged in a gap between the fixing through hole of the fixing part 17 and the pressure-resistant outer pipe 14;
and the joint surface of the end cover 3 and the oil cylinder far away from the plunger 6 is sealed 29 by a third sealing ring.
Here, the sensor holder 2 with the magnetostrictive sensor 1 is fixed in the end cover through hole of the end cover 3 by using a bolt, and the joint surface of the sensor holder 2 and the end cover through hole is sealed by using a first seal ring 23. Through the first sealing ring 23 in the sealing groove 22, the gap between the side wall of the through hole fixing part 17 and the end cover through hole can be sealed, and the better sealing of the oil filling cavity 8 is ensured. In addition, the second sealing ring 24 can fill the gap between the fixing through hole of the fixing part 17 of the sensor holder 2 and the pressure-resistant outer tube 14, thereby further ensuring better sealing of the refueling cavity 8.
Fig. 3 is an enlarged schematic view of the second region 16 in fig. 1, preferably, as shown in fig. 3, a plunger through hole is formed at a tail end 61 of the plunger 6 in the refueling cavity 8, an annular magnet 4 and a magnetic isolation gasket 7 are arranged on an inner side wall of the plunger through hole, the annular magnet 4 and the magnetic isolation gasket 7 are overlapped, through holes are respectively formed in the annular magnet 4 and the magnetic isolation gasket 7, the through hole of the annular magnet 4, the through hole of the magnetic isolation gasket 7 and the plunger through hole are aligned with each other, wherein the annular magnet 4 is arranged at a side close to the end cap, and the magnetic isolation gasket 7 is arranged at a side far from the end cap;
the sleeve 18 penetrates through the through hole of the annular magnet 4, the through hole of the magnetic isolation gasket 7 and the through hole of the plunger and extends into the cavity 34 of the plunger, and a circumferential gap 27 is reserved between the sleeve 18 and the annular magnet 4.
Here, the ring magnet 4 is embedded in the tail end of the plunger 6, the ring magnet 4 moves along the axial direction 25 of the cylinder synchronously with the plunger 6, and the ring magnet 4 and the waveguide in the magnetostrictive displacement sensor 1 can form a detection loop. A circumferential gap 27 is left between the ring magnet 4 and the sleeve 18 of the sensor carrier 1, so that mechanical friction between the ring magnet 4 and the sleeve 18 during axial movement 25 of the ring magnet is avoided. The magnetic isolation gasket 7 can be made of nylon materials, the magnetic isolation effect is achieved, the magnetic isolation gasket 7 is embedded between the annular magnet and the plunger 6, and the annular magnet 4 and the magnetic isolation gasket 7 are fixed on the plunger 6 through screws 31. A circumferential air gap 27 of 7mm is reserved between the annular magnet 4 and the sleeve of the sensor support, so that mechanical friction between the annular magnet 4 and the sleeve in the axial direction 25 moving process driven by the plunger 6 can be avoided. The magnetic isolation gasket 7 is embedded between the annular magnet 4 and the plunger 6 and is sequentially fixed on the plunger 6 through screws. The magnetic isolation gasket 7 is arranged to effectively prevent magnetic conduction.
As shown in fig. 1, preferably, the end cover 3 is fixed with an axial direction 25 of the cylinder far away from the plunger 6 through a bolt, the end cover 3 is fixed with a radial direction 26 of the cylinder far away from the plunger 6 through a snap ring 28, and a fixing collar 30 is sleeved outside the snap ring 28 to further fix the snap ring 28; here, the end cover 3 is axially fixed with the oil cylinder through a bolt, and is radially fixed with the oil cylinder through a snap ring, and the oil cylinder 5 is connected with the base of the ship body through a plurality of groups of bolts, so that the axial or radial displacement between the magnetostrictive displacement sensor 1 and the base can be ignored.
As shown in fig. 4 and 5, preferably, an external thread 19 is provided at one end of the pressure-resistant outer tube 14, an internal thread matched with the external thread is provided in the fixing through hole of the fixing portion 17, and the pressure-resistant outer tube 14 is fixed to the sensor holder 2 by matching the external thread 19 with the internal thread 20.
Preferably, an annular guide liner 32 is arranged on the inner side wall of the oil cylinder 5, the outer side wall of the annular guide liner 32 is in contact with the inner side wall of the oil cylinder, the inner side wall of the annular guide liner 32 is in contact with the outer side wall of the plunger 6, and the guide liner is made of high polymer wear-resistant materials such as fiber composites, thermosetting resins and the like; as shown in fig. 1, a V-shaped combined seal ring is arranged in a gap defined by the guide liner 32, the outer side wall of the plunger 6 and the inner side wall of the oil cylinder 5, the V-shaped combined seal ring 33 is formed by overlapping a plurality of V-shaped seal rings, and the cross section of each V-shaped seal ring is V-shaped.
Here, the plunger 6 is inserted into the cylinder along the guide strip. The guide bush can provide support for the plunger 6, so that the plunger 6 can slide on the oil cylinder 5 conveniently, the oil cylinder is prevented from being in direct contact with the plunger 6, and the oil cylinder 5 and the plunger 6 are prevented from being abraded. By means of the annular guide bush 32, the plunger 6 is moved in the axial direction 25 of the cylinder 5 without movement in the radial direction 26, thereby ensuring the certainty of the direction of movement of the ring magnet 4.
The V-shaped combined sealing ring 33 is formed by overlapping the V-shaped sealing rings together, so that the V-shaped combined sealing ring 33 can bear high-pressure oil pressure in the oil cylinder, and the sealing effect of the oil cylinder is ensured. And a lifting bolt 35 can be arranged on the oil cylinder, so that the oil cylinder is convenient to lift.
In conclusion, the magnetostrictive sensor can realize the function of steering engine rudder angle feedback acquisition; the magnetostrictive sensor eliminates abrasion and noise by adopting a non-contact watertight rudder angle feedback mechanism, can avoid mechanical errors of a connecting rod type and a self-angle trimming machine, and can also greatly reduce the influence on feedback precision caused by the shaking of a rudder stock in the movement process so as to improve the control precision of the rudder angle; the displacement signal returned by the magnetostrictive sensor is an absolute value signal. The condition of signal drift or value change does not exist, and the periodic re-calibration and maintenance are not needed as other displacement sensors, so that the problem of repeated adjustment of a feedback mechanism is thoroughly solved; the watertight rudder angle feedback mechanism is arranged in the oil cylinder, so that the influence of the feedback mechanism on the overall dimension of the rudder pushing mechanism can be reduced to the maximum extent, and the compact design of the rudder pushing mechanism is facilitated. The built-in structure ensures the EMC (electromagnetic compatibility) characteristic of the feedback mechanism.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
It will be apparent to those skilled in the art that various changes and modifications may be made in the utility model without departing from the spirit and scope of the utility model. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. A watertight rudder angle feedback mechanism, comprising:
the end cover is closed at the end, far away from the plunger, of the oil cylinder, and an end cover through hole is formed in the end cover;
the magnetostrictive displacement sensor, magnetostrictive displacement sensor stretches into the volume intracavity that refuels of hydro-cylinder, magnetostrictive displacement sensor includes: an electronic component and a waveguide connected to the electronic component;
the waterproof cover shell assembly is fixed on the end cover outside the refueling cavity, and the electronic component of the magnetostrictive displacement sensor is arranged in the waterproof cover shell assembly;
the sensor bracket is fixed in the end cover through hole, and the magnetostrictive displacement sensor is fixed on the sensor bracket;
the annular magnet is arranged on a plunger inside a refueling cavity of the oil cylinder, the plunger outside the refueling cavity of the oil cylinder is connected with the tiller, and a first magnetic field generated by the magnetostrictive displacement sensor is intersected with a second magnetic field generated by the annular magnet to generate current pulses;
a controller connected to the electronic components of the magnetostrictive displacement sensor.
2. The watertight rudder angle feedback mechanism according to claim 1, wherein the waterproof housing assembly includes:
the waterproof housing is connected with the end cover through a bolt, a watertight cabin is formed in the waterproof housing, the electronic component is arranged in the watertight cabin, and a third sealing ring is arranged at a joint of the waterproof housing and the end cover;
the watertight stuffing box is fixed on a waterproof housing outside the watertight cabin, and an external cable connected with the electronic component penetrates through the watertight stuffing box to be connected with the controller.
3. The watertight rudder angle feedback mechanism according to claim 1, wherein the electronic component is fixed to the oil cylinder outside the oil filling cavity, the electronic component is arranged at the end, far away from the plunger, of the oil cylinder, the waveguide tube extends into the oil filling cavity, a gap is arranged between the waveguide tube and the ring magnet, a first magnetic field generated by the waveguide tube intersects with a second magnetic field generated by the ring magnet to generate current pulses, and the electronic component is covered by a protective shell; the controller is connected with the electronic component;
and the waveguide tube is arranged in the containing cavity of the pressure-resistant outer tube.
4. The watertight rudder angle feedback mechanism according to claim 3, wherein the sensor bracket includes: the pressure-resistant outer tube is arranged in the sleeve, and is arranged in the pressure-resistant outer tube accommodating cavity.
5. The watertight rudder angle feedback mechanism according to claim 4, wherein a sealing groove is circumferentially provided in a sidewall of the through-hole fixing portion of the sensor bracket contacting the end cover through-hole, and a first sealing ring is provided in the sealing groove; a second sealing ring is circumferentially arranged in a gap between the fixing through hole of the fixing part and the pressure-resistant outer pipe; and the joint surface of the end cover and the oil cylinder far away from the plunger end is sealed by a third sealing ring.
6. The watertight rudder angle feedback mechanism according to claim 4, wherein the plunger in the refueling cavity has a plunger through hole at its rear end, an annular magnet and a magnetic isolation gasket are provided on the inner side wall of the plunger through hole, the annular magnet and the magnetic isolation gasket are overlapped, and through holes are provided on the annular magnet and the magnetic isolation gasket, respectively, and the through hole of the annular magnet, the through hole of the magnetic isolation gasket, and the plunger through hole are aligned with each other, wherein the annular magnet is provided on the side close to the end cover, and the magnetic isolation gasket is provided on the side far from the end cover;
the sleeve penetrates through the through hole of the annular magnet, the through hole of the magnetism isolating gasket and the through hole of the plunger and extends into the cavity of the plunger, and a circumferential gap is reserved between the sleeve and the annular magnet.
7. The watertight rudder angle feedback mechanism according to claim 1, wherein the end cap is axially fixed to the cylinder far away from the plunger end through a bolt, the end cap is radially fixed to the cylinder far away from the plunger end through a snap ring, and a fixing collar is sleeved outside the snap ring.
8. The watertight rudder angle feedback mechanism according to claim 1, wherein an annular guide bush is disposed on an inner side wall of the cylinder, an outer side wall of the annular guide bush is in contact with the inner side wall of the cylinder, an inner side wall of the annular guide bush is in contact with an outer side wall of the plunger, and the guide bush is made of fiber composite or thermosetting resin; and a V-shaped combined sealing ring is arranged in a gap defined by the guide lining, the outer side wall of the plunger and the inner side wall of the oil cylinder, wherein the V-shaped combined sealing ring is formed by overlapping a plurality of V-shaped sealing rings, and the cross section of each V-shaped sealing ring is V-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122079266.8U CN215794393U (en) | 2021-08-31 | 2021-08-31 | Watertight rudder angle feedback mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122079266.8U CN215794393U (en) | 2021-08-31 | 2021-08-31 | Watertight rudder angle feedback mechanism |
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| Publication Number | Publication Date |
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| CN215794393U true CN215794393U (en) | 2022-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122079266.8U Active CN215794393U (en) | 2021-08-31 | 2021-08-31 | Watertight rudder angle feedback mechanism |
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| CN (1) | CN215794393U (en) |
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- 2021-08-31 CN CN202122079266.8U patent/CN215794393U/en active Active
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