Constant force loading device with force feedback

Abstract

The invention provides a constant force loading device with force feedback, and belongs to the technical field of aviation steering engines, and the constant force loading device comprises a substrate, a limiting assembly, a force measurement sensor and a load unit. The limiting assembly comprises a first support and a second support, the second support is arranged on the base plate in a position-adjustable mode, and a limiting space used for containing the linear steering engine is formed between the first support and the second support. The loading unit comprises a loading rack, a torque adjusting assembly and a brake, the loading rack is arranged on the base plate in a sliding mode, the torque adjusting assembly is provided with an input shaft and an output gear, the output gear is meshed with the loading rack, the brake is provided with an output shaft, and the output shaft is connected with the input shaft. One end of the force transducer is connected with the loading rack through a first joint, and the other end is connected with the linear steering engine through a second joint. The constant force loading device with force feedback can adapt to linear steering engines of different specifications, and can apply a constant and accurate load to carry out a loading test.

Description

Technical Field

[0001] This invention belongs to the field of aviation servo technology, and in particular relates to a constant force loading device with force feedback. Background Technology

[0002] A linear servo is a servo actuator in aircraft that converts input control signals into linear displacement output. To accurately determine the load-bearing capacity of a linear servo under real-world operating conditions, those skilled in the art need to conduct load tests on the linear servo to expose potential problems in advance and accurately quantify its true performance.

[0003] In existing technologies, loading devices for linear servos typically apply loads using hydraulic pressure, springs, or heavy loads. These devices generally have high inertia and complex structures, making them prone to insufficient load capacity or oil leaks, and they do not meet the constant force loading requirements of linear servos. Furthermore, existing loading devices are not adaptable to linear servos of different sizes, resulting in poor versatility and low ease of use. Summary of the Invention

[0004] In view of this, the present invention aims to provide a constant force loading device with force feedback to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the technical solution created by this invention is implemented as follows:

[0006] A constant force loading device with force feedback includes: a base plate, a limiting component, a force sensor, and a load unit, wherein the limiting component, the force sensor, and the load unit are arranged sequentially on the base plate; the limiting component includes a first support and a second support, the first support being fixedly connected to the base plate, and the second support being adjustablely disposed on the base plate, forming a limiting space for accommodating a linear servo between the first support and the second support; the load unit includes: a loading rack, a torque adjustment component, and a brake, the loading rack being slidably disposed on the base plate, the torque adjustment component having an input shaft and an output gear, the output gear being drively connected to the input shaft and meshing with the loading rack, the brake being detachably disposed on the base plate, the brake having an output shaft connected to the input shaft; one end of the force sensor is connected to the loading rack via a first connector, and the other end of the force sensor is connected to the linear servo inside the limiting space via a second connector.

[0007] Furthermore, the linear servo is provided with a servo surface connector and a fuselage connector at both ends; the first support is provided with a first mounting hole for accommodating the fuselage connector, and a locking nut is provided on the fuselage connector; the second support is provided with a second mounting hole for accommodating the servo surface connector, the second connector is provided with a pin hole, a pin is provided inside the pin hole, and the second connector is connected to the servo surface connector through the pin.

[0008] Furthermore, the second support is provided with mounting holes, and a positioning bolt is provided inside the mounting holes. The base plate is provided with a plurality of positioning screw holes for accommodating the positioning bolts, and the plurality of positioning screw holes are arranged along the length direction of the loading rack.

[0009] or,

[0010] The second support has a connecting block at the bottom and a guide rail on the base plate. The length direction of the guide rail is parallel to the length direction of the loading rack, and the connecting block is slidably mounted on the guide rail.

[0011] Furthermore, the substrate is provided with a guide slide rail, the length direction of which is parallel to the length direction of the loading rack, and a slider is provided on the guide slide rail, the loading rack and the slider being detachably connected.

[0012] Furthermore, the first connector includes a connector body, which has a guide surface that contacts the top surface of the guide rail.

[0013] Furthermore, one end of the connector body is provided with a first threaded connector, the loading rack is connected to the connector body through the first threaded connector, and a first adjusting nut is provided on the first threaded connector; the other end of the connector body is provided with a second threaded connector, the force sensor is connected to the connector body through the second threaded connector, and a second adjusting nut is provided on the second threaded connector.

[0014] Furthermore, the substrate is provided with a mounting base, the brake is detachably mounted on the mounting base, and the mounting base is provided with a connection hole for accommodating the output shaft.

[0015] Furthermore, the torque adjustment assembly includes a housing, which is detachably connected to the base plate. A mounting cutout is provided at the bottom of the housing, and at least a portion of the output gear extends out of the housing along the mounting cutout. An input gear and a transmission gear set are provided inside the housing. The input gear is connected to the end of the input shaft away from the brake, and the output gear is connected to the input gear through the transmission gear set.

[0016] Furthermore, the substrate is provided with a first lifting handle and a second lifting handle, the first lifting handle being located on the side of the limiting component away from the load unit, and the second lifting handle being located on the side of the load unit away from the limiting component.

[0017] Compared with existing technologies, the constant force loading device with force feedback described in this invention has the following advantages:

[0018] This invention provides a constant force loading device with force feedback, whose limiting component includes an adjustable second support. Therefore, before loading tests on linear servos of different specifications, operators can adjust the position of the second support according to the actual size of the linear servo to match the limiting space with the servo, improving the versatility and ease of use of the device. Secondly, the device has a force sensor, allowing for accurate feedback of the load magnitude during loading tests on linear servos. Furthermore, the loading unit includes a brake and a torque adjustment component, reducing the likelihood of inertial loads and oil leaks during use. Operators can also apply a constant and controllable load to the linear servo through the coordination of the brake and torque adjustment component, thereby improving the effectiveness of the loading test. Attached Figure Description

[0019] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0020] Figure 1 A schematic diagram of a constant force loading device with force feedback as described in an embodiment of the present invention;

[0021] Figure 2 A schematic diagram of the torque adjustment assembly described in an embodiment of the present invention;

[0022] Figure 3 A schematic diagram of the structure of the first connector described in an embodiment of the present invention;

[0023] Figure 4 A schematic diagram of the structure of the second connector as described in an embodiment of the present invention.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1-Baseboard; 11-Guide rail; 12-Slider; 13-Mounting base; 14-First lifting handle; 15-Second lifting handle; 21-First support; 211-Locking nut; 22-Second support; 3-Loading rack; 41-Input shaft; 42-Output gear; 43-Housing; 5-Brake; 51-Output shaft; 6-Force sensor; 71-Connector body; 711-Guide section; 72-First threaded connector; 721-First adjusting nut; 73-Second threaded connector; 731-Second adjusting nut; 8-Second connector; 81-Pin hole; 9-Linear servo. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0027] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0028] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0029] The invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] A constant force loading device with force feedback, the structure of which can be made of Figures 1-4The following diagram illustrates the constant force loading device with force feedback in this embodiment: a base plate 1, a limiting component, a force sensor 6, and a load unit, which are arranged sequentially on the base plate 1. The base plate 1 provides a mounting foundation for the linear servo 9 and other components in the device; the limiting component secures the linear servo 9; the force sensor 6 provides force feedback (i.e., feedback of the applied load) during the loading test; and the load unit applies a load to the linear servo 9 according to the test requirements.

[0031] Specifically, the load unit includes a loading rack 3, a torque adjustment assembly, and a brake 5. The loading rack 3 is slidably mounted on the base plate 1. The torque adjustment assembly has an input shaft 41 and an output gear 42, wherein the output gear 42 is drive-connected to the input shaft 41 and meshes with the loading rack 3. The brake 5 is detachably mounted on the base plate 1 and has an output shaft 51 connected to the input shaft 41. During load testing, the operator can drive the brake 5 to output the corresponding torque according to the actual load requirements. Subsequently, the torque adjustment assembly adjusts the torque output by the brake 5 (e.g., increasing or decreasing it) and outputs it through the output gear 42. The output gear 42, in conjunction with the loading rack 3, converts the torque into the sliding motion of the loading rack 3. Finally, the sliding motion of the loading rack 3 transmits a constant load to the linear servo 9, completing the load application to the linear servo 9.

[0032] Optionally, the torque adjustment assembly in this embodiment may include a housing 43, and the housing 43 may be detachably connected to the base plate 1 by means of bolts. Figure 2 As shown, a mounting cutout is provided at the bottom of the housing 43, and at least a portion of the output gear 42 extends out of the housing 43 along the mounting cutout to facilitate meshing between the output gear 42 and the loading rack 3. To realize the torque adjustment function of the torque adjustment assembly, an input gear and a transmission gear set (neither shown in the figure) may also be provided inside the housing 43. The input gear is connected to the end of the input shaft 41 away from the brake 5, and the output gear 42 is connected to the input gear via the transmission gear set. When the torque output by the brake 5 is transmitted to the torque adjustment assembly, the torque adjustment assembly can adjust the torque according to the transmission ratio between the input gear, the transmission gear set, and the output gear 42, so that the torque transmitted from the output gear 42 to the loading rack 3 matches the actual requirements.

[0033] It should be noted that, to meet different torque adjustment requirements, operators can flexibly adjust the number and meshing of the transmission gears in the transmission gear set to match the transmission ratio inside the torque adjustment component with the actual torque adjustment requirements. Correspondingly, operators can also adjust the input current (or input voltage) of brake 5 to output different amounts of torque, or replace brake 5 and / or the torque adjustment component according to actual loading requirements, thereby matching the load on the linear servo 9 with the test requirements.

[0034] Optionally, to enable the loading rack 3 to slide, this embodiment may provide a guide rail 11 on the base plate 1, the length direction of which is parallel to the length direction of the loading rack 3, and a slider 12 on the guide rail 11. During assembly, the loading rack 3 can be detachably connected to the slider 12 by bolts, so that the loading rack 3 can slide along the guide rail 11 when the output gear 42 rotates.

[0035] In addition, in order to realize the assembly between the brake 5 and the base plate 1, the base plate 1 may be provided with a mounting seat 13, the brake 5 is detachably mounted on the mounting seat 13, and the mounting seat 13 is provided with a connection hole for accommodating the output shaft 51, so as to effectively support and fix the brake 5 through the mounting seat 13.

[0036] To accurately reflect the load on the linear servo 9, in this embodiment, one end of the force sensor 6 is connected to the loading rack 3 via a first connector, and the other end of the force sensor 6 is connected to the linear servo 9 inside the confined space via a second connector 8. When the linear servo 9 bears a load due to the movement of the loading rack 3, the force sensor 6 can provide feedback on the load, thereby facilitating accurate judgment and timely adjustment by the operator.

[0037] like Figure 3 As shown, the first connector may include a connector body 71, on which a guide surface 711 is provided, and the guide surface 711 contacts the top surface of the guide rail 11. When the loading rack 3 moves, the contact between the guide surface 711 and the top surface of the guide rail 11 can improve the stability of the rotational reliability of the device, so that the load in the loading rack 3 can be stably transmitted to the force sensor 6 and the linear servo 9.

[0038] Optionally, in this embodiment, a first threaded connector 72 is provided at one end of the connector body 71, and a second threaded connector 73 is provided at the other end of the connector body 71. During assembly, the loading rack 3 is connected to the connector body 71 through the first threaded connector 72, and the force sensor 6 is connected to the connector body 71 through the second threaded connector 73. In addition, a first adjusting nut 721 may be provided on the first threaded connector 72, and a second adjusting nut 731 may be provided on the second threaded connector 73. After assembly is completed, the operator can adjust the position of the first adjusting nut 721 and the second adjusting nut 731 to eliminate assembly gaps and ensure good load transmission effect inside the device.

[0039] To facilitate the fixing of the linear servo 9, the limiting component in this embodiment includes a first support 21 and a second support 22. The first support 21 is fixedly connected to the base plate 1, and the second support 22 is adjustablely disposed on the base plate 1, forming a limiting space between the first support 21 and the second support 22 to accommodate the linear servo 9. When the specifications of the linear servo 9 under test change, the operator can adjust the position of the second support 22, thereby enabling the device to adapt to the loading test of different linear servos 9.

[0040] Since a typical linear servo 9 has a servo surface connector and a fuselage connector at both ends, to facilitate assembly between the linear servo 9 and other components in this device, the first support 21 may have a first mounting hole for accommodating the fuselage connector, and a locking nut 211 may be provided on the fuselage connector to enhance the assembly reliability between the fuselage connector and the first support 21. The second support 22 may have a second mounting hole for accommodating the servo surface connector, such as... Figure 4 As shown, the second connector 8 may also be provided with a pin hole 81, and a pin should be provided inside the pin hole 81. The second connector 8 is connected to the rudder surface connector through the pin so that the load can be transmitted to the linear rudder 9.

[0041] Optionally, to achieve position adjustment of the second support 22, this embodiment may provide mounting holes on the second support 22, and positioning bolts inside the mounting holes. Correspondingly, the base plate 1 may provide multiple positioning screw holes for accommodating the positioning bolts, and the multiple positioning screw holes are arranged along the length direction of the loading rack 3. When adjusting the position, the operator can first unscrew the positioning bolts, and then drive the second support 22 to move. After the second support 22 moves to the appropriate position, the positioning bolts are then screwed into the positioning screw holes corresponding to the current position to lock the position of the second support 22.

[0042] Alternatively, as another optional method for adjusting the position of the second support 22, a connecting block can be provided at the bottom of the second support 22. In this case, the base plate 1 should have a guide rail whose length direction is parallel to the length direction of the loading rack 3, and the connecting block is slidably mounted on the guide rail. When adjusting the position, the operator can drive the connecting block to slide on the guide rail, and after the second support 22 reaches the preset position, the connecting block can be locked by a set screw or other common methods.

[0043] As an optional implementation of this embodiment, to facilitate the movement of the device by the operator, the base plate 1 may also be provided with a first lifting handle 14 and a second lifting handle 15. The first lifting handle 14 is located on the side of the limiting component away from the load unit, and the second lifting handle 15 is located on the side of the load unit away from the limiting component, thereby improving the ease of movement of the device by means of the lifting handles.

[0044] It should be noted that the brake and force sensor described in this embodiment are mature products in the prior art, and their specific structure and working principle are well known to the public. They are not the core improvement points of this application, so they will not be described in detail in this article.

[0045] The effects of the above solution are explained below:

[0046] This embodiment provides a constant force loading device with force feedback, which can be adapted to linear servos of different specifications by adjusting the position of the second support, thereby improving the versatility and ease of use of the device. Secondly, the device can accurately feedback the load magnitude through a force sensor. Furthermore, the loading unit of this device is less prone to inertial loads and oil leakage problems, and can apply a constant and controllable load to the linear servo, thereby improving the effectiveness of loading tests.

[0047] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A constant force loading device with force feedback, characterized in that, include: The system comprises a base plate (1), a limiting component, a force sensor (6), and a load unit, wherein the limiting component, the force sensor (6), and the load unit are arranged sequentially on the base plate (1); the limiting component includes a first support (21) and a second support (22), the first support (21) being fixedly connected to the base plate (1), and the second support (22) being adjustablely disposed on the base plate (1), forming a limiting space between the first support (21) and the second support (22) for accommodating a linear servo motor (9); the load unit includes a loading rack (3), a torque adjustment component, and a brake (5), wherein the loading rack (3) is slidably disposed on the base plate (1). The torque adjustment assembly is placed on the base plate (1). It has an input shaft (41) and an output gear (42). The output gear (42) is connected to the input shaft (41) and meshes with the loading rack (3). The brake (5) is detachably mounted on the base plate (1). The brake (5) has an output shaft (51) and is connected to the input shaft (41). One end of the force sensor (6) is connected to the loading rack (3) through a first connector, and the other end of the force sensor (6) is connected to the linear servo (9) inside the limiting space through a second connector (8).

2. The constant force loading device with force feedback according to claim 1, characterized in that: The linear servo (9) has a servo surface connector and a fuselage connector at both ends; the first support (21) has a first mounting hole for accommodating the fuselage connector, and a locking nut (211) is provided on the fuselage connector; the second support (22) has a second mounting hole for accommodating the servo surface connector, the second connector (8) has a pin hole (81), a pin is provided inside the pin hole (81), and the second connector (8) is connected to the servo surface connector through the pin.

3. A constant force loading device with force feedback according to claim 1, characterized in that: The second support (22) is provided with mounting holes, and positioning bolts are provided inside the mounting holes. Multiple positioning screw holes for accommodating positioning bolts are provided on the base plate (1), and the multiple positioning screw holes are arranged along the length direction of the loading rack (3). or, The second support (22) has a connecting block at the bottom and a guide rail on the base plate (1). The length direction of the guide rail is parallel to the length direction of the loading rack (3), and the connecting block is slidably disposed on the guide rail.

4. A constant force loading device with force feedback according to claim 1, characterized in that: The substrate (1) is provided with a guide slide rail (11), the length direction of the guide slide rail (11) is parallel to the length direction of the loading rack (3), and a slider (12) is provided on the guide slide rail (11). The loading rack (3) and the slider (12) are detachably connected.

5. A constant force loading device with force feedback according to claim 4, characterized in that: The first connector includes a connector body (71), on which a guide surface (711) is provided, and the guide surface (711) is in contact with the top surface of the guide rail (11).

6. A constant force loading device with force feedback according to claim 5, characterized in that: One end of the connector body (71) is provided with a first threaded connector (72), the loading rack (3) is connected to the connector body (71) through the first threaded connector (72), and a first adjusting nut (721) is provided on the first threaded connector (72); the other end of the connector body (71) is provided with a second threaded connector (73), the force sensor (6) is connected to the connector body (71) through the second threaded connector (73), and a second adjusting nut (731) is provided on the second threaded connector (73).

7. A constant force loading device with force feedback according to claim 1, characterized in that: The base plate (1) is provided with a mounting base (13), the brake (5) is detachably mounted on the mounting base (13), and the mounting base (13) is provided with a connection hole for accommodating the output shaft (51).

8. A constant force loading device with force feedback according to claim 1, characterized in that: The torque adjustment assembly includes a housing (43) which is detachably connected to the base plate (1). A mounting cutout is provided at the bottom of the housing (43), and at least a portion of the output gear (42) extends out of the housing (43) along the mounting cutout. An input gear and a transmission gear set are provided inside the housing (43). The input gear is connected to the end of the input shaft (41) away from the brake (5), and the output gear (42) is connected to the input gear through the transmission gear set.

9. A constant force loading device with force feedback according to claim 1, characterized in that: The substrate (1) is provided with a first lifting handle (14) and a second lifting handle (15). The first lifting handle (14) is located on the side of the limiting component away from the load unit, and the second lifting handle (15) is located on the side of the load unit away from the limiting component.

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