Multifunctional trolley measuring device for aircraft

Abstract

The utility model discloses a multifunctional trolley measuring device for an aircraft, and relates to the field of aircrafts. The at least two bearing mechanisms are arranged on the top of the trolley frame. The mounting position of the bearing mechanism on the trolley frame can be adjusted and locked in the length direction of the trolley frame. The moving mechanism is arranged at the bottom of the trolley frame. And the plurality of adjustable foot margin mechanisms are arranged in the circumferential direction of the trolley frame, can be adjusted and locked in the vertical direction relative to the trolley frame, and are used for supporting and adjusting the trolley frame in a measurement mode. The measuring system comprises a plurality of tension and pressure sensors and a display. The tension and pressure sensor is arranged between the trolley frame and the adjustable foot margin mechanism, and the displayer is electrically connected with the tension and pressure sensor. Wherein the trolley can be switched between a transportation mode and a measurement mode by changing the connection state between the measurement system and the adjustable foot margin mechanism. According to the invention, one vehicle has multiple purposes, the matching cost and the operation threshold are reduced, and the efficiency and convenience of ground service guarantee are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of aircraft technology, in particular to a multifunctional trolley measuring device for aircraft. BACKGROUND

[0002] The vertical take-off and landing aircraft has been widely used in the fields of inspection, surveying, logistics, etc. due to its unique take-off and landing mode. However, in its entire life cycle, various ground operations such as body transfer, weight and center of gravity measurement, trimming and rotor lift evaluation are required.

[0003] At present, the industry generally uses single-function special tools to complete the above tasks. For example, a simple transport trolley is used for body transfer, a special ground scale or a pound scale is used to measure the weight of the aircraft, the center of gravity is estimated through complex calculation and repeated trimming, or a fixed test bench is built to evaluate the rotor lift. This coexistence of multiple tools has obvious disadvantages: multiple sets of equipment occupy a large storage space and are inconvenient to transfer; in addition, the switching process between different operations (especially transportation and measurement operations) is complicated and inefficient, and it is difficult to complete the comprehensive evaluation of weight, center of gravity and lift on the same stable reference. CONTENT OF THE INVENTION

[0004] The embodiment of the present application provides a multifunctional trolley measuring device for aircraft, which solves the problems in the background art.

[0005] The embodiment of the present application provides a multifunctional trolley measuring device for aircraft, which solves the problems in the background art.

[0006] The trolley frame;

[0007] At least two supporting mechanisms are arranged at the top of the trolley frame and used for supporting the aircraft landing gear; the mounting position of the supporting mechanism on the trolley frame can be adjusted and locked along the length direction to adapt to aircraft landing gears of different specifications;

[0008] A moving mechanism is arranged at the bottom of the trolley frame;

[0009] A plurality of adjustable foot mechanisms are arranged in the circumferential direction of the trolley frame and can be adjusted and locked in the vertical direction relative to the trolley frame, and are used for supporting and leveling the trolley frame in the measurement mode;

[0010] A measurement system includes a display and a plurality of tension and compression force sensors; the tension and compression force sensors are arranged between the trolley frame and the adjustable foot mechanisms, and the display is electrically connected with the tension and compression force sensors and used for displaying the measurement value;

[0011] The connection state between the measuring system and the adjustable leg mechanism is changed to switch the trolley between the transportation mode and the measuring mode; in the measuring mode, the load of the aircraft is transmitted to the adjustable leg mechanism through the trolley frame and the measuring system and sensed by the tension and compression force sensor.

[0012] In a possible implementation, the supporting mechanism comprises a landing gear placing table and a spacing adjustment assembly; two sides of the trolley frame are provided with adjustment grooves along the length direction thereof; the spacing adjustment assembly passes through the adjustment grooves to lock the landing gear placing table to the trolley frame.

[0013] In a possible implementation, the spacing adjustment assembly comprises a fixed eye ring and an adjustment bolt; the adjustment bolt and the fixed eye ring are respectively located at two sides of the landing gear placing table and connected to the trolley frame to jointly lock the position of the landing gear placing table.

[0014] In a possible implementation, the supporting mechanism further comprises a limiting pad; the limiting pad is detachably arranged on the landing gear placing table to adapt to landing gears of different specifications of aircrafts and limit the horizontal movement thereof.

[0015] In a possible implementation, the measuring system further comprises a plurality of sensor mounting brackets and a plurality of locking pieces; two ends of the tension and compression force sensor are respectively detachably connected to the top of the trolley frame and the corresponding sensor mounting bracket; the sensor mounting bracket is sleeved on the outer wall of the corresponding adjustable leg mechanism, and the side wall thereof is provided with a connecting hole; the locking piece passes through the connecting hole and can engage with the adjustable leg mechanism to lock the sensor mounting bracket to the adjustable leg mechanism.

[0016] In a possible implementation, the adjustable leg mechanism comprises a fixed leg having a screw rod part; the trolley frame is provided with a plurality of guide blocks, and the guide blocks are provided with through holes through which the screw rod part passes; an outer wall of the screw rod part is sleeved with a lower limiting nut; the lower limiting nut is located below the guide block to adjust and support the trolley frame.

[0017] In a possible implementation, an outer wall of the screw rod part is sleeved with an upper limiting nut; the upper limiting nut is located above the guide block.

[0018] In a possible implementation, the trolley frame is provided with a traction lug.

[0019] The one or more technical solutions provided in the embodiments of the present application have at least the following technical effects:

[0020] The multifunctional trolley measuring device for aircraft provided by the embodiment of the present application comprises a trolley frame, a moving mechanism, a measuring system, at least two supporting mechanisms and a plurality of adjustable foot mechanisms. The present application changes the connection state between the measuring system and the adjustable foot mechanism to realize the switching between the transportation mode and the measuring mode. In the measuring mode, the center of gravity of the aircraft body can be intuitively balanced by adjusting the position of the supporting mechanism and combining the display value of the tension and pressure sensor; the weight of the aircraft can be obtained by reading the value of the tension and pressure sensor; and the rotor lift can be evaluated according to the value change of the tension and pressure sensor by fixing the aircraft to the trolley frame and starting the rotor. Therefore, the present application solves the problems of high equipment cost, large storage space occupation and complicated process switching caused by the coexistence of multiple sets of tooling in the prior art, realizes the "one trolley with multiple functions", reduces the supporting cost and operation threshold, and improves the efficiency and convenience of ground service support. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the description of the embodiments of the present application will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0022] Figure 1 The structural schematic diagram of the multifunctional trolley measuring device for aircraft provided by the embodiment of the present application is shown in the figure.

[0023] Figure 2 The top view of Figure 1

[0024] Figure 3 The schematic diagram of the multifunctional trolley measuring device for aircraft provided by the embodiment of the present application in the moving mode is shown in the figure.

[0025] Figure 4 The schematic diagram of the multifunctional trolley measuring device for aircraft provided by the embodiment of the present application in the measuring mode is shown in the figure.

[0026] Figure legend: 1-trolley frame; 11-adjusting groove; 2-supporting mechanism; 21-landing gear placing table; 22-distance adjusting assembly; 221-fixed lifting ring; 222-adjusting bolt; 23-limiting pad; 231-limiting groove; 3-measuring system; 31-sensor mounting bracket; 32-locking part; 33-tension and pressure sensor; 34-display; 4-towing lug; 5-adjustable foot mechanism; 51-fixed foot; 511-screw part; 52-guiding block; 53-lower limiting nut; 54-upper limiting nut; 6-moving mechanism; 61-moving wheel. DETAILED DESCRIPTION

[0027] ​With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0028] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. The terms "first", "second", "third" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through an intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0029] The embodiments of the present application provide a multifunctional trolley measuring device for aircraft, as shown in Figures 1 to 4 The multifunctional trolley measuring device for aircraft includes a trolley frame 1, a moving mechanism 6, a measuring system 3, at least two supporting mechanisms 2 and a plurality of adjustable foot mechanisms 5. The at least two supporting mechanisms 2 are arranged on the top of the trolley frame 1 and are used to support the aircraft landing gear. The mounting position of the supporting mechanism 2 on the trolley frame 1 can be adjusted and locked along the length direction thereof to adapt to aircraft landing gears of different specifications. The moving mechanism 6 is arranged on the bottom of the trolley frame 1. The plurality of adjustable foot mechanisms 5 are arranged circumferentially on the trolley frame 1 and can be adjusted and locked in the vertical direction relative to the trolley frame 1 to support and adjust the trolley frame 1 in the measurement mode. The measuring system 3 includes a display 34 and a plurality of tension and pressure sensors 33. The tension and pressure sensors 33 are arranged between the trolley frame 1 and the adjustable foot mechanisms 5, and the display 34 is electrically connected with the tension and pressure sensors 33 and is used to display the measurement value. Wherein, the trolley can be switched between the transportation mode and the measurement mode by changing the connection state between the measuring system 3 and the adjustable foot mechanisms 5. In the measurement mode, the load of the aircraft is transmitted to the adjustable foot mechanisms 5 through the trolley frame 1 and the measuring system 3 and is sensed by the tension and pressure sensors 33.

[0030] In an embodiment of the present application, the tension and compression force sensor 33 is in an S-shaped structure.

[0031] In an embodiment of the present application, four adjustable leg mechanisms 5 and four tension and compression force sensors 33 are symmetrically arranged about the longitudinal and transverse central axes of the trolley frame 1. This symmetrical layout ensures uniform distribution and accurate measurement of the load, providing a structural basis for weight and gravity center calculation. Correspondingly, the moving mechanism 6 also includes four moving wheels 61 arranged circumferentially at the bottom of the trolley frame 1, two of which are directional wheels and the other two are universal wheels. This configuration ensures both stability during straight movement and flexibility during steering.

[0032] It should be noted that the present application changes the connection state between the measurement system 3 and the adjustable leg mechanism 5 to switch between the transportation mode and the measurement mode. In the measurement mode, the aircraft body gravity center can be intuitively leveled by adjusting the position of the support mechanism 2 and combining the display values of the tension and compression force sensor 33; the weight of the aircraft can be obtained by reading the values of the tension and compression force sensor 33; and the rotor lift can be evaluated according to the value changes of the tension and compression force sensor 33 by fixing the aircraft to the trolley frame 1 and starting the rotor. Therefore, the present application solves the problems of high equipment cost, large storage space occupation, and complicated process switching caused by the coexistence of multiple toolings in the prior art, realizes "one trolley with multiple functions", reduces the supporting cost and operation threshold, and improves the efficiency and convenience of ground service support.

[0033] In an embodiment of the present application, the support mechanism 2 includes a landing gear placing table 21 and a spacing adjustment assembly 22. The trolley frame 1 is provided with an adjustment slot 11 along the length direction of the trolley frame 1 on both sides. The spacing adjustment assembly 22 passes through the adjustment slot 11 to lock the landing gear placing table 21 to the trolley frame 1.

[0034] It should be noted that the present application embodiment sets the support mechanism 2 which can move along the adjustment slot 11 of the trolley frame 1 and be locked, so that one trolley can adapt to landing gears of different specifications of aircrafts, improving the universality of the equipment.

[0035] In an embodiment of the present application, the spacing adjustment assembly 22 includes a fixed eye ring 221 and an adjustment bolt 222. The adjustment bolt 222 and the fixed eye ring 221 are respectively located on both sides of the landing gear placing table 21 and connected with the trolley frame 1 to jointly lock the position of the landing gear placing table 21.

[0036] It should be noted that the adjusting bolt 222 and the fixed lifting ring 221 of the present application are used to jointly lock the landing gear placing table 21 from both sides, which not only provides stable and reliable clamping force to ensure that the supporting mechanism 2 does not displace during measurement, but also integrates the function of the fixed lifting ring 221, which can be directly used as a binding point to connect the aircraft body and the trolley frame 1 during evaluation of the rotor lift of the aircraft, thereby simplifying the operation process.

[0037] In the present application, the supporting mechanism 2 further comprises a limiting pad 23. The limiting pad 23 is detachably arranged on the landing gear placing table 21, and is used to adapt to landing gears of different specifications of aircrafts and limit the horizontal movement thereof.

[0038] Specifically, the top of the limiting pad 23 is provided with a limiting groove 231 matched with the profile of the landing gear of the aircraft, which effectively limits the horizontal movement of the aircraft and ensures that the aircraft always maintains a stable and centered posture during transportation and measurement, thereby providing a necessary condition for obtaining accurate weight and center of gravity data. Meanwhile, this design makes it only necessary to replace the corresponding limiting pad 23 when adapting to aircrafts of different models, which is simple to operate and has strong versatility.

[0039] Specifically, the landing gear placing table 21 is a channel steel, which provides a standard installation reference for the detachable limiting pad 23.

[0040] In the present application, the measuring system 3 further comprises a plurality of sensor mounting brackets 31 and a plurality of locking members 32. The two ends of the tension and compression force sensor 33 are respectively detachably connected to the top of the trolley frame 1 and the corresponding sensor mounting bracket 31. The sensor mounting bracket 31 is sleeved on the outer wall of the corresponding adjustable foot mechanism 5, and the side wall thereof is provided with a connecting hole. The locking member 32 is inserted into the connecting hole and can engage with the adjustable foot mechanism 5 to lock the sensor mounting bracket 31 on the adjustable foot mechanism 5.

[0041] Specifically, the two ends of the tension and compression force sensor 33 are connected to the top of the trolley frame 1 and the corresponding sensor mounting bracket 31 through fastening connecting members, respectively.

[0042] It should be noted that the design of the sensor mounting bracket 31 and the locking member 32 of the present application realizes quick and reliable switching of the connection state between the measuring system 3 and the adjustable foot mechanism 5. By tightening the locking member 32 to engage the sensor mounting bracket 31 with the adjustable foot mechanism 5, a force transmission path is established, and the measurement mode is entered. After loosening, the two are separated, and the transportation mode is switched back. This structure is the key to realizing the core function of the trolley "one machine with multiple functions", which is simple and fast to operate, and effectively solves the problem of complicated switching process and low efficiency between different operations in the background technology.

[0043] In the embodiment of the present application, the adjustable foot mechanism 5 comprises a fixed foot 51, and the fixed foot 51 has a screw rod part 511. The trolley frame 1 is provided with a plurality of guide blocks 52, and the guide blocks 52 are provided with through holes for the screw rod part 511 to pass through. The outer wall of the screw rod part 511 is sleeved with a lower limiting nut 53. The lower limiting nut 53 is located below the guide block 52, and is used for adjusting and bearing the trolley frame 1.

[0044] The outer wall of the screw rod part 511 is sleeved with an upper limiting nut 54. The upper limiting nut 54 is located above the guide block 52, and is used for limiting the maximum stroke of the upward movement of the fixed foot 51 relative to the guide block 52, and plays a safety protection role in tests such as rotor lift evaluation.

[0045] In the embodiment of the present application, the trolley frame 1 is provided with a traction lug 4.

[0046] It should be noted that the trolley of the present application can realize the switching between the transportation mode and the measurement mode. When moving in the transportation mode, the locking part 32 is loosened to separate the sensor mounting bracket 31 from the adjustable foot mechanism 5, and the upper limiting nut 54 and the lower limiting nut 53 are adjusted to make the bottom of the fixed foot 51 higher than the moving wheel 61, then the locking mechanism of the universal wheel is loosened and the traction lug 4 is connected to realize movement. When fixed, the fixed foot 51 is adjusted in the reverse direction to make the bottom lower than the moving wheel 61 and the universal wheel is locked. When switched to the measurement mode, the universal wheel is first locked, the fixed foot 51 is adjusted to support and ensure that the landing gear placement table 21 is horizontal, then the locking part 32 is tightened to connect the sensor mounting bracket 31, and finally the lower limiting nut 53 is loosened to establish a measurement path, so that the weight of the aircraft can be measured. On the basis of the measurement mode, advanced applications can be further performed. When the center of gravity is balanced, the position of the landing gear placement table 21 is adjusted according to the design of the front and rear center of gravity of the aircraft, so that the projection is coincided with the center of gravity of the trolley, and then the counterweight is adjusted according to the readings of the four tension and pressure sensors 33 until the values are balanced. When the rotor lift is evaluated, the trolley is anchored to the ground by using the ground peg holes on the fixed foot 51, and the aircraft body is connected with the trolley frame 1 by using the binding belt passing through the fixed lifting ring 221, after the rotor is started, the lift performance can be evaluated by monitoring the change of the tension and pressure values of all the fixed feet 51.

[0047] Each of the embodiments in the specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment mainly describes the difference from other embodiments.

[0048] The above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can still be modified, or some or all of the technical features thereof can be replaced by equivalents; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present application.

Claims

1. A multi-functional trolley measuring device for aircraft, characterized in that, include: Trolley frame (1); At least two support mechanisms (2) are provided on the top of the trolley frame (1) for supporting the aircraft landing gear; the installation position of the support mechanism (2) on the trolley frame (1) can be adjusted and locked along its length to adapt to different specifications of aircraft landing gear. The moving mechanism (6) is located at the bottom of the trolley frame (1); Multiple adjustable foot mechanisms (5) are arranged in the circumference of the trolley frame (1) and can be adjusted and locked in the vertical direction relative to the trolley frame (1) to support and level the trolley frame (1) in measurement mode. The measurement system (3) includes a display (34) and multiple tension and compression sensors (33); the tension and compression sensors (33) are disposed between the trolley frame (1) and the adjustable foot mechanism (5), and the display (34) is electrically connected to the tension and compression sensors (33) for displaying the measured values; In this mode, by changing the connection state between the measurement system (3) and the adjustable foot mechanism (5), the trolley can switch between the transport mode and the measurement mode. In the measurement mode, the load of the aircraft is transmitted to the adjustable foot mechanism (5) through the trolley frame (1) and the measurement system (3), and is sensed by the tension and compression sensor (33).

2. The multi-functional trolley measuring device for aircraft according to claim 1, characterized in that, The support mechanism (2) includes a landing gear placement platform (21) and a pitch adjustment assembly (22). The trolley frame (1) has adjustment grooves (11) on both sides along its length. The spacing adjustment assembly (22) passes through the adjustment slot (11) to lock the landing gear placement platform (21) to the trolley frame (1).

3. The multi-functional trolley measuring device for aircraft according to claim 2, characterized in that, The spacing adjustment assembly (22) includes a fixed lifting ring (221) and an adjusting bolt (222); The adjusting bolt (222) and the fixing ring (221) are located on both sides of the landing gear platform (21) and connected to the trolley frame (1) to jointly lock the position of the landing gear platform (21).

4. The multi-functional trolley measuring device for aircraft according to claim 2, characterized in that, The supporting mechanism (2) also includes a limiting pad (23); The limiting pad (23) is detachably mounted on the landing gear mounting platform (21) to adapt to different specifications of aircraft landing gear and restrict its horizontal movement.

5. The multi-functional trolley measuring device for aircraft according to claim 1, characterized in that, The measurement system (3) also includes multiple sensor mounting brackets (31) and multiple locking components (32). The two ends of the tension and compression sensor (33) are detachably connected to the top of the trolley frame (1) and the corresponding sensor mounting bracket (31). The sensor mounting bracket (31) is sleeved on the outer wall of the corresponding adjustable foot mechanism (5), and its side wall is provided with a connection hole; The locking member (32) passes through the connection hole and can engage with the adjustable foot mechanism (5) to lock the sensor mounting bracket (31) to the adjustable foot mechanism (5).

6. The multi-functional trolley measuring device for aircraft according to claim 5, characterized in that, The adjustable foot mechanism (5) includes a fixed foot (51), and the fixed foot (51) has a screw portion (511). The trolley frame (1) is provided with a plurality of guide blocks (52), and the guide blocks (52) have through holes for the screw part (511) to pass through; The outer wall of the screw part (511) is fitted with a lower limit nut (53); the lower limit nut (53) is located below the guide block (52) and is used to adjust and support the trolley frame (1).

7. The multi-functional trolley measuring device for aircraft according to claim 6, characterized in that, The upper limit nut (54) is fitted on the outer wall of the screw part (511); the upper limit nut (54) is located above the guide block (52).

8. The multi-functional trolley measuring device for aircraft according to claim 1, characterized in that, The trolley frame (1) is provided with traction lugs (4).

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