Mechanism suitable for monitoring oil pressure of high-temperature hydraulic actuation product
By combining mechanical and electrical signal conversion with a pressure transmission mechanism, the problem of hydraulic actuator oil pressure monitoring under high temperature conditions is solved, and effective monitoring and control of oil pressure under high temperature conditions is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2026-04-03
AI Technical Summary
Existing hydraulic actuator oil pressure monitoring devices cannot work effectively in high-temperature environments above 170°C, and therefore cannot meet the monitoring requirements of flight control and engine control systems.
The mechanical-electric signal conversion mechanism, consisting of a micro switch, mounting base, rocker arm, pin, rocker arm torsion spring, baffle, and contacts, combined with a pressure transmission mechanism consisting of a valve core, valve sleeve, spring, outer spring seat, inner spring seat, and screw plug, enables oil pressure monitoring in high-temperature environments.
It enables effective monitoring of hydraulic pressure in hydraulically operated products under high-temperature conditions. It has a compact structure, is suitable for high temperatures, and has a wide range of applications.
Smart Images
Figure CN224079406U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hydraulic actuation technology, and in particular to a mechanism for monitoring oil pressure in high-temperature hydraulic actuation products. Background Technology
[0002] With the rapid development of aircraft flight control technology and integrated flight and engine control technology, the monitoring requirements of flight control and engine control systems for hydraulic actuators are increasing, and oil pressure monitoring is an important monitoring requirement.
[0003] Currently, the hydraulic pressure monitoring function of commonly used hydraulic actuators is generally achieved through pressure sensors. However, the highest applicable ambient temperature for domestic pressure sensors is generally 170℃, which cannot meet the requirements for higher ambient temperatures. Utility Model Content
[0004] This invention provides a mechanism for monitoring the oil pressure of high-temperature hydraulic actuation products, solving the problem that existing pressure monitoring mechanisms cannot meet the requirements of higher ambient temperatures.
[0005] This utility model provides a mechanism for monitoring the oil pressure of high-temperature hydraulic actuation products. The oil pressure monitoring mechanism includes: a micro switch 1, a mounting base 2, a rocker arm 3, a pin 4, a rocker arm torsion spring 5, a baffle 6, and a contact 7. The high-temperature hydraulic actuation product includes: a valve core 8, a valve sleeve 9, a spring 10, an outer spring seat 11, an inner spring seat 12, and a screw plug 13.
[0006] The micro switch 1, mounting base 2, rocker arm 3, pin 4, rocker arm torsion spring 5, baffle 6, and contact 7 constitute a mechanical-electrical signal conversion mechanism.
[0007] The micro switch 1 is mounted on the mounting base 2 by screws;
[0008] The rocker arm 3 is mounted on the mounting base 2 by a pin 4 and a rocker arm torsion spring 5;
[0009] The baffle 6 is fixed to the mounting base 2 by bolts, and serves to limit the pin 4;
[0010] The valve core 8, valve sleeve 9, spring 10, outer end spring seat 11, inner end spring seat 12, and screw plug 13 constitute a pressure transmission mechanism.
[0011] The valve core 8 is inserted into the hole of the valve sleeve 9;
[0012] The inner end spring seat 12 is nested and connected to the valve core 8, and moves with the valve core 8;
[0013] The spring 10 is sleeved on the outside of the inner end spring seat 12, and the outer ring of the inner end spring seat 12 is provided with a convex ring for compressing the spring.
[0014] The outer end spring seat 11 is sleeved outside the spring 10 and contacts the valve sleeve 9;
[0015] The screw plug 13 is sleeved on the outer end spring seat 11 to fix the outer end spring seat 11;
[0016] The end of the inner spring seat 12 away from the convex ring is in contact with the rocker arm 3.
[0017] Optionally, the mounting base 2 is a T-shaped structure, with two microswitches 1 symmetrically arranged on both sides of the vertical arm of the T-shaped structure; pins 4 are arranged parallel to each other on the horizontal arm of the T-shaped structure.
[0018] Two contacts 7 are provided at the end of the rocker arm 3 away from the inner spring seat 12, which are used to contact the two microswitches 1 respectively.
[0019] Optionally, the height specifications of the two contacts 7 are selected according to the actual size of the two microswitches 1, so that the two microswitches 1 are triggered simultaneously.
[0020] Optionally, the end of the inner spring seat 12 away from the convex ring is a spherical surface, which contacts the rocker arm 3.
[0021] Optionally, the valve core 8 and the inner end spring seat 12 are connected in a T-shaped nested connection.
[0022] Optionally, the screws on the mounting base 2 are prevented from loosening by applying high-temperature anaerobic adhesive.
[0023] Optionally, a fluorosilicone sealing ring is provided on the outer side of the valve sleeve 9 and the outer end spring seat 11.
[0024] Optionally, a high-temperature resistant micro switch (1) may be used for the mechanical-electrical signal conversion mechanism.
[0025] This invention provides a mechanism for monitoring oil pressure in high-temperature hydraulic actuation products. The mechanism includes a pressure transmission mechanism and a mechanical-electrical signal conversion mechanism. The pressure transmission mechanism comprises a valve sleeve, valve core, spring, outer spring seat, inner spring seat, and plug. One end of the valve core communicates with the oil, and the other end contacts the rocker arm of the mechanical-electrical signal conversion mechanism. The conversion valve transmits changes in oil pressure. When the oil pressure reaches a threshold value, the valve core moves, pushing the rocker arm. The rocker arm movement causes a microswitch to turn on or off, changing the output signal of the microswitch, thus allowing a remote control terminal to detect the oil pressure change. The mechanical-electrical signal conversion mechanism consists of a microswitch, mounting base, rocker arm, rocker arm torsion spring, pin, baffle, and contacts. The microswitch is mounted on the mounting base. This invention is not only compact but also suitable for high temperatures and can be extended to broader application scenarios. Attached Figure Description
[0026] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0027] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;
[0028] Figure 2 This is a schematic diagram of another embodiment of the present invention;
[0029] Figure 3 This is a schematic diagram showing the connection between the valve core and the inner end spring seat of this utility model;
[0030] Among them: micro switch-1, mounting base-2, rocker arm-3, pin-4, rocker arm torsion spring-5, baffle-6, contact-7, valve core-8, valve sleeve-9, spring-10, outer end spring seat-11, inner end spring seat-12, screw plug-13. Detailed Implementation
[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0032] The features and illustrative embodiments of various aspects of this utility model will now be described in detail. In the following detailed description, numerous specific details are set forth in order to provide a comprehensive understanding of this utility model. However, it will be apparent to those skilled in the art that this utility model can be practiced without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this utility model by illustrating examples of it. This utility model is by no means limited to any specific arrangements and methods set forth below, but covers any improvements, substitutions, and modifications to the structure, method, and apparatus without departing from the spirit of this utility model. In the accompanying drawings and the following description, well-known structures and techniques are not shown to avoid unnecessarily obscuring this utility model.
[0033] It should be noted that, where there is no conflict, the embodiments of this utility model and the features therein can be combined with each other, and the various embodiments can be referenced and cited in turn. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.
[0034] This invention takes into account that a microswitch is a highly sensitive component used for control signal conversion, capable of withstanding temperatures up to 260°C, and can convert mechanical motion signals into electrical signals to meet monitoring requirements. The pressure transmission mechanism can provide feedback on hydraulic pressure through mechanical motion. By combining the pressure transmission mechanism with the mechanical-electrical signal conversion mechanism, the hydraulic pressure monitoring function for hydraulically operated products under high-temperature environments can be achieved.
[0035] Figure 1 This is a structural schematic diagram of an embodiment of the present invention. Figure 2 This is a schematic diagram of another embodiment of the present invention.
[0036] This utility model provides a mechanism for monitoring the oil pressure of high-temperature hydraulic actuation products. The oil pressure monitoring mechanism includes: a micro switch 1, a mounting base 2, a rocker arm 3, a pin 4, a rocker arm torsion spring 5, a baffle 6, and a contact 7. The high-temperature hydraulic actuation product includes: a valve core 8, a valve sleeve 9, a spring 10, an outer spring seat 11, an inner spring seat 12, and a screw plug 13.
[0037] The micro switch 1, mounting base 2, rocker arm 3, pin 4, rocker arm torsion spring 5, baffle 6, and contact 7 constitute a mechanical-electrical signal conversion mechanism.
[0038] The micro switch 1 is mounted on the mounting base 2 by screws;
[0039] The rocker arm 3 is mounted on the mounting base 2 by a pin 4 and a rocker arm torsion spring 5;
[0040] The baffle 6 is fixed to the mounting base 2 by bolts, and serves to limit the pin 4;
[0041] The valve core 8, valve sleeve 9, spring 10, outer end spring seat 11, inner end spring seat 12, and screw plug 13 constitute a pressure transmission mechanism.
[0042] The valve core 8 is inserted into the hole of the valve sleeve 9;
[0043] The inner end spring seat 12 is nested and connected to the valve core 8, and moves with the valve core 8;
[0044] The spring 10 is sleeved on the outside of the inner end spring seat 12, and the outer ring of the inner end spring seat 12 is provided with a convex ring for compressing the spring.
[0045] The outer end spring seat 11 is sleeved outside the spring 10 and contacts the valve sleeve 9;
[0046] The screw plug 13 is sleeved on the outer end spring seat 11 to fix the outer end spring seat 11;
[0047] The end of the inner spring seat 12 away from the convex ring is in contact with the rocker arm 3.
[0048] Optionally, the mounting base 2 is a T-shaped structure, with two microswitches 1 symmetrically arranged on both sides of the vertical arm of the T-shaped structure; pins 4 are arranged parallel to each other on the horizontal arm of the T-shaped structure.
[0049] Two contacts 7 are provided at the end of the rocker arm 3 away from the inner spring seat 12, which are used to contact the two microswitches 1 respectively.
[0050] Optionally, the height specifications of the two contacts 7 are selected according to the actual size of the two microswitches 1, so that the two microswitches 1 are triggered simultaneously.
[0051] Optionally, the end of the inner spring seat 12 away from the convex ring is a spherical surface, which contacts the rocker arm 3.
[0052] Optionally, the valve core 8 and the inner end spring seat 12 are connected in a T-shaped nested connection.
[0053] Optionally, the screws on the mounting base 2 are prevented from loosening by applying high-temperature anaerobic adhesive.
[0054] Optionally, a fluorosilicone sealing ring is provided on the outer side of the valve sleeve 9 and the outer end spring seat 11.
[0055] Optionally, a high-temperature resistant micro switch (1) may be used for the mechanical-electrical signal conversion mechanism.
[0056] The mechanical-electrical signal conversion mechanism includes a micro switch, mounting base, rocker arm, rocker arm torsion spring, pin, baffle, and contacts. The micro switch is mounted on the mounting base with screws, and is prevented from loosening by applying high-temperature anaerobic adhesive. The rocker arm is connected to the mounting base by a pin, and the pin is equipped with a spring, which pushes the rocker arm when the oil pressure decreases.
[0057] The pressure transmission mechanism of the oil pressure monitoring system may include: valve sleeve, valve core, spring, outer spring seat, inner spring seat, screw plug, etc. One end of the valve core of the switching valve communicates with the oil, and the other end contacts the rocker arm of the mechanical-electrical signal conversion mechanism. The switching valve can transmit changes in oil pressure. When the oil pressure changes to a threshold value, the valve core will start to move, which in turn pushes the rocker arm. The movement of the rocker arm causes the microswitch to turn on or off, and the output signal of the microswitch changes, thereby allowing the remote control terminal to sense the change in oil pressure.
[0058] In some embodiments, the lengths of the valve core and valve sleeve can be adjusted as needed.
[0059] In some embodiments, the connection between the rocker arm and the mounting base can be achieved using bolts and nuts.
[0060] In some embodiments, the micro switch can be secured with an internal hex bolt and can be prevented from loosening by a fuse.
[0061] In some embodiments, different numbers of microswitches are used to meet different redundancy requirements.
[0062] Application verification has shown that this hydraulic pressure monitoring mechanism has a compact structure, is suitable for high temperatures, and has the potential for expanded applications. Currently, this mechanism has been applied to various models of hydraulic actuation products.
[0063] For example, such as Figure 3 As shown, the valve core 8 is provided with a connecting T-shaped protrusion structure, and the inner end spring seat 12 is provided with a corresponding T-shaped groove structure, and the two are nested and connected.
[0064] It is understandable, and welding, triangular connection, or other methods can also be used.
[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should be covered within the protection scope of this utility model.
Claims
1. A mechanism for monitoring hydraulic pressure in high-temperature hydraulically actuated products, characterized in that, The mechanical-electric signal conversion mechanism includes: micro switch (1), mounting base (2), rocker arm (3), pin (4), rocker arm torsion spring (5), baffle (6), and contact (7); the pressure transmission mechanism includes: valve core (8), valve sleeve (9), spring (10), outer end spring seat (11), inner end spring seat (12), and screw plug (13); The micro switch (1), mounting base (2), rocker arm (3), pin (4), rocker arm torsion spring (5), baffle (6), and contact (7) constitute a mechanical-electrical signal conversion mechanism; The micro switch (1) is mounted on the mounting base (2) by screws; the rocker arm (3) is mounted on the mounting base (2) by pins (4) and rocker arm torsion springs (5); The baffle (6) is fixed to the mounting base (2) by bolts, and plays a limiting role for the pin (4); The valve core (8), valve sleeve (9), spring (10), outer end spring seat (11), inner end spring seat (12), and screw plug (13) constitute a pressure transmission mechanism. The valve core (8) is inserted into the hole of the valve sleeve (9); The inner end spring seat (12) is nested with the valve core (8) and moves with the valve core (8); The spring (10) is sleeved on the outside of the inner end spring seat (12), and the outer ring of the inner end spring seat (12) is provided with a convex ring for compressing the spring; The outer end spring seat (11) is sleeved on the outside of the spring (10) and contacts the valve sleeve (9); The screw plug (13) is sleeved on the outer end spring seat (11) to fix the outer end spring seat (11). The end of the inner spring seat (12) away from the convex ring is in contact with the rocker arm (3).
2. The mechanism for monitoring hydraulic pressure in high-temperature hydraulically actuated products according to claim 1, characterized in that, The mounting base (2) is a T-shaped structure, and two microswitches (1) are symmetrically arranged on both sides of the vertical arm of the T-shaped structure; the pin (4) is arranged parallel to the horizontal arm of the T-shaped structure. Two contacts (7) are provided at the end of the rocker arm (3) away from the inner end spring seat (12), which are used to contact the two microswitches (1) respectively.
3. The mechanism for monitoring hydraulic pressure in high-temperature hydraulically actuated products according to claim 2, characterized in that, The height specifications of the two contacts (7) are selected according to the actual size of the two microswitches (1) so that the two microswitches (1) are triggered simultaneously.
4. The mechanism for monitoring hydraulic pressure in high-temperature hydraulically actuated products according to claim 1, characterized in that, The end of the inner spring seat (12) away from the convex ring is a spherical surface, which is in contact with the rocker arm (3).
5. The mechanism for monitoring hydraulic pressure in high-temperature hydraulically actuated products according to claim 1, characterized in that, The valve core (8) and the inner end spring seat (12) are connected in a T-shaped nested connection.
6. The mechanism for monitoring hydraulic pressure in high-temperature hydraulically actuated products according to claim 1, characterized in that, The anti-loosening measure for the screws on the mounting base (2) is to apply high-temperature anaerobic adhesive.
7. The mechanism for monitoring hydraulic pressure in high-temperature hydraulically actuated products according to claim 1, characterized in that, Fluorosilicone sealing rings are provided on the outer side of the valve sleeve (9) and the outer end spring seat (11).
8. The mechanism for monitoring hydraulic pressure in high-temperature hydraulically actuated products according to claim 1, characterized in that, The mechanical-electric signal conversion mechanism uses a high-temperature resistant micro switch (1).
9. The mechanism for monitoring hydraulic pressure in high-temperature hydraulically actuated products according to claim 1, characterized in that, The range of pressure to be detected can be achieved by designing the spring specifications.