A pre-tightening force detection device for an oil receiving device

Abstract

This utility model discloses a preload force detection device for a refueling device, comprising a support, a pressure sensor, a mounting plate, a screw, and a base arranged sequentially from top to bottom. The pressure sensor is fixedly mounted on the top of the mounting plate, and the two sides of the support are slidably connected to the mounting plate via support fixing columns. The two ends of the screw are threadedly connected to the mounting plate and the base respectively, with opposite thread directions. The top of the support has an arc-shaped mating surface for contact with the fuel pipeline, and the bottom of the support has a sensor mating hole for contact with the sensor's measuring head. A locking mechanism is provided between the mounting plate, screw, and base to fix the height of the preload force detection device and prevent loosening. This utility model can provide support for the preload force of the refueling device, monitor the preload force in real time during flight, and allow for gradient adjustment of the device's height. The locking mechanism ensures reliable fixation and prevents loosening, guaranteeing stable and reliable preload force measurement.

Description

Technical Field

[0001] This utility model belongs to the technical field of aerial refueling devices, specifically relating to a preload detection device for refueling devices. Background Technology

[0002] The refueling receiver has a deployment and retraction function, extending during in-flight refueling and retracting after refueling is complete. Simultaneously, it needs to maintain the aircraft's aerodynamic shape and stealth performance, while also possessing a compact structure and minimal space requirements, representing a significant development trend for China's flexible aerial refueling technology. Currently, the refueling receiver uses a linkage-driven mechanism to extend the fuel pipeline from the fuselage for refueling, and then retracts it after refueling. Before the fuel pipeline's theoretical trajectory is fully retracted, rigid structures such as supports are needed to restrict its continued movement, causing deformation of the linkages and achieving a preload effect on the linkage drive mechanism to counteract the aerodynamic loads on the refueling receiver during flight. However, traditional preload measures use simple components for support, making it impossible to measure the preload force, and the component dimensions cannot be adjusted. Utility Model Content

[0003] The purpose of this invention is to provide a preload detection device for an oil receiving device, which measures the magnitude of the preload in real time and can adjust the preload gradient.

[0004] This utility model is mainly achieved through the following technical solutions: A preload detection device for an oil receiving device includes, from top to bottom, a support, a pressure sensor, a mounting plate, a screw, and a base. The pressure sensor is fixedly mounted on the top of the mounting plate, and the two sides of the support are slidably connected to the mounting plate via support fixing columns. The two ends of the screw are threadedly connected to the mounting plate and the base, respectively, with opposite thread directions. The top of the support has an arc-shaped mating surface for contact with a fuel pipeline, and the bottom of the support has a sensor mating hole for contact with the sensor's measuring head. A locking mechanism is provided between the mounting plate, screw, and base to fix the height of the preload detection device and prevent loosening.

[0005] To better realize this utility model, further, the two sides of the support are respectively provided with first threaded holes corresponding to the support fixing column. The support fixing column includes a threaded section, a smooth rod section and a hexagonal head arranged sequentially from top to bottom. The threaded section of the support fixing column is threadedly connected to the first threaded hole of the support. The smooth rod section is slidably connected to the mounting plate. The upper end of the support fixing column passes through the mounting plate and is threadedly connected to the support.

[0006] To better realize this utility model, the bottom of the mounting plate is provided with a left-hand threaded hole that is threaded to the screw, the periphery of the mounting plate is provided with a sensor mounting hole, and the two sides are respectively provided with through holes that are slidably connected to the smooth rod section of the support and fixing column; one end of the sensor mounting screw passes through the sensor mounting hole and is fixedly connected to the sensor.

[0007] To better realize this utility model, the upper and lower ends of the screw are respectively provided with a left-hand threaded section and a right-hand threaded section, and the top of the support is correspondingly provided with a right-hand threaded hole.

[0008] To better realize this utility model, the screw is further provided with a hexagonal middle section in the middle, which is used to adjust the height of the preload detection device.

[0009] To better realize this utility model, the locking mechanism further includes a locking key and a screw with a safety hole. The bottom of the mounting plate and the top of the support are respectively provided with a plurality of first keyways and third keyways along their circumference. The outer side of the screw is provided with a corresponding second keyway, and the second keyway is provided with a threaded hole inside. The locking key is connected to the first keyway, the second keyway and the third keyway respectively, and the screw with a safety hole passes through the locking key and is threadedly connected to the threaded hole inside the second keyway.

[0010] To better realize this utility model, a support is further provided on the outer side of the locking key, and a safety hole is provided in the middle of the support.

[0011] To better realize this utility model, the peripheral sides of the support are further fixed to the bottom structure by support mounting screws.

[0012] The beneficial effects of this utility model are as follows: This invention provides support for the preload of the refueling device and monitors the preload in real time during flight. It also allows for gradient adjustment of the device's altitude and uses a locking mechanism to ensure reliable fixation and prevent loosening, guaranteeing stable and reliable preload measurement. The invention provides support for the preload of the refueling device and uses a pressure sensor between the support and the mounting plate to monitor the preload in real time during flight. The screw in this invention has threads with opposite directions at both ends, allowing for altitude adjustment and preload adjustment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the preload force detection device for the oil receiving device of this utility model; Figure 2 This is a schematic diagram of the supporting structure; Figure 3 This is a schematic diagram of the structure supporting the fixed column; Figure 4 This is a structural diagram of the mounting plate; Figure 5 This is a schematic diagram of the screw structure; Figure 6 This is a schematic diagram of the support structure; Figure 7 This is a schematic diagram of the locking key.

[0014] Wherein: 1-support, 2-support fixing column, 3-pressure sensor, 4-mounting plate, 5-sensor mounting screw, 6-screw, 7-support, 8-support mounting screw, 9-locking key, 10-screw with safety hole 11-Circular arc mating surface, 12-Sensor mating hole, 13-First threaded hole, 21-Threaded section, 22-Smooth section, 23-Hexagonal head. 41-Left-hand threaded hole, 42-Sensor mounting hole, 43-Through hole, 44-First keyway, 61 - Left-hand threaded section, 62 - Hexagonal middle section, 63 - Right-hand threaded section, 64 - Second keyway, 65 - Second threaded hole. 71-Right-hand threaded hole, 72-Support mounting hole, 73-Third keyway, 91 - Through hole, 92 - Safety hole. Detailed Implementation

[0015] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", and "outer" used to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0016] Furthermore, the use of terms such as "horizontal" or "vertical" in the description of this utility model does not imply that the component is required to be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0017] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0018] Example 1: A preload detection device for an oil receiving device includes, from top to bottom, a support 1, a pressure sensor 3, a mounting plate 4, a screw 6, and a base 7. The pressure sensor 3 is fixedly mounted on the top of the mounting plate 4, and the two sides of the support 1 are slidably connected to the mounting plate 4 via support fixing columns 2. The two ends of the screw 6 are threadedly connected to the mounting plate 4 and the base 7, respectively, with opposite thread directions. The top of the support 1 is provided with an arc-shaped mating surface 11 for fitting against the fuel pipeline, and the bottom of the support 1 is provided with a sensor mating hole 12 for fitting against the measuring head of the sensor. A locking mechanism is provided between the mounting plate 4, the screw 6, and the base 7 to fix the height of the preload detection device and prevent loosening.

[0019] This invention adjusts the height of the mounting plate 4 using a screw 6 and measures the preload force using a pressure sensor 3 between the support 1 and the mounting plate 4. The locking mechanism ensures the relative fixation of the positions of the mounting plate 4, screw 6, and support 7, achieving a release mechanism and demonstrating good practicality.

[0020] Example 2: A preload detection device for an oil receiving device, such as Figure 1 As shown, it includes support 1, support fixing column 2, pressure sensor 3, mounting plate 4, sensor mounting screw 5, screw 6, support 7, support mounting screw 8, locking key 9, and screw with safety hole 10.

[0021] like Figure 2 As shown, the support 1 includes an arc-shaped mating surface 11, a sensor mating hole 12, and a first threaded hole 13. The arc-shaped mating surface 11 can fit well with the fuel pipeline, the sensor mating hole 12 can fit well with the pressure sensor measuring head, and the first threaded hole 13 is connected to the support fixing column 2. This utility model uses a pressure sensor 3 to monitor the preload force in real time during flight.

[0022] like Figure 3As shown, the supporting column 2 includes a threaded section 21, a smooth section 22, and a hexagonal head 23. The threaded section 21 is connected to the support 1, the smooth section 22 is clearance-fitted with the mounting plate 4, and the hexagonal head 23 is used to tighten the threaded connection. The pressure sensor 3 is a common type of pressure sensor, cylindrical in shape, with a measuring head on the upper surface for measuring pressure and a fixing mounting hole on the lower surface.

[0023] like Figure 4 As shown, the mounting plate 4 includes a left-hand threaded hole 41, a sensor mounting hole 42, a through hole 43, and a first keyway 44. The left-hand threaded hole 41 is used to connect with the screw 6, the sensor mounting hole 42 is used to install the pressure sensor 3, the through hole 43 is clearance-fitted with the support fixing column 2, and the first keyway 44 is used to engage with the locking key 9 for insertion and connection. The sensor mounting screw 5 is used to install the pressure sensor.

[0024] like Figure 5 As shown, the screw 6 includes a left-hand threaded section 61, a hexagonal middle section 62, a right-hand threaded section 63, a second keyway 64, and a second threaded hole 65. The left-hand threaded section 61 is used to connect with the mounting plate 4. The hexagonal middle section 62 can be turned in and out of the threads at both ends of the screw 6 using a tool. The right-hand threaded section 63 is used to connect with the support 7. The second keyway 64 is used to connect with the locking key 9. The second threaded hole 65 is connected with the screw 10 with the safety hole.

[0025] like Figure 6 As shown, the support 7 includes a right-hand threaded hole 71, a support mounting hole 72, and a third keyway 73. The right-hand threaded hole 71 is used to connect with the screw 6, the support mounting hole 72 is used to fix the support 7, and the third keyway 73 is used to engage with the locking key 9. The support mounting screw 8 is used to install the support.

[0026] like Figure 7 As shown, the locking key 9 includes a through hole 91 and a safety hole 92. The through hole 91 is connected to a screw 10 with a safety hole, and the safety hole 92 and the screw 10 with a safety hole are secured with a safety wire to prevent loosening. The safety hole screw 10 is used to fix the locking key 9.

[0027] In use, the support 7 is fixed to the bottom structure through the support mounting hole 72 using the support mounting screw 8; the pressure sensor 3 is fixed to the mounting plate 4 through the sensor mounting hole 42 using the sensor mounting screw 5; and the support fixing column 2 passes through the through hole 43 of the mounting plate 4 and is threadedly connected and fixed to the support 1, so that the support 1, pressure sensor 3 and mounting plate 3 are installed as a whole.

[0028] Connect the left-hand threaded section 61 of the screw 6 to the left-hand threaded hole 41 of the mounting plate 4, and connect the right-hand threaded section 63 of the screw 6 to the right-hand threaded hole 71 of the support 7. Turn the hexagonal middle section 62 of the screw 6 to simultaneously screw in the threads at both ends, thus connecting the mounting plate 4, screw 6, and support 7 into a single unit. Specifically, the hexagonal middle section 62 of the screw 6 can be turned to screw in and out in quarter-circle increments to achieve gradient adjustment of the device height. After adjustment, install the locking key 9 and the safety screw 10 to fix the device height and prevent loosening.

[0029] Adjust the threaded connections of mounting plate 4, screw 6, and support 7 so that locking key 9 is simultaneously inserted into the keyways of all three. Use safety hole screw 10 to secure locking key 9, and use a safety wire to prevent loosening of safety hole 92 and safety hole screw 10. Zero pressure sensor 3, retract fuel receiving device, and bring fuel pipeline into contact with the arc-shaped mating surface 11 of support 1 for pre-tightening. Measure the pre-tightening force using pressure sensor 3.

[0030] The disassembly process of this utility model is as follows: remove the safety hole screw 10 and take off the locking key 9; turn the hexagonal middle section 62 of the screw rod 6 to unscrew the threads at both ends, and take off the mounting plate 4 and the screw rod 6; remove the support mounting screw 8 and take off the support 7 from the bottom structure; remove the support fixing column 2 and take off the support 1; remove the sensor mounting screw 5 and take off the pressure sensor 3 from the mounting plate 4.

[0031] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A preload detection device for an oil receiving device, characterized in that, The device includes a support (1), a pressure sensor (3), a mounting plate (4), a screw (6), and a support (7) arranged sequentially from top to bottom. The pressure sensor (3) is fixedly mounted on the top of the mounting plate (4), and the two sides of the support (1) are slidably connected to the mounting plate (4) through support fixing columns (2). The two ends of the screw (6) are threadedly connected to the mounting plate (4) and the support (7) respectively, and the threads are in opposite directions. The top of the support (1) is provided with an arc mating surface (11) for fitting with the fuel pipeline, and the bottom of the support (1) is provided with a sensor mating hole (12) for fitting with the measuring head of the sensor. A locking mechanism is provided between the mounting plate (4), the screw (6), and the support (7) to fix the height of the preload detection device and prevent it from loosening.

2. The oil receiving device preload detection device according to claim 1, characterized in that, The support (1) has a first threaded hole (13) on each side corresponding to the support fixing column (2). The support fixing column (2) includes a threaded section (21), a smooth rod section (22) and a hexagonal head (23) arranged from top to bottom. The threaded section (21) of the support fixing column (2) is threadedly connected to the first threaded hole (13) of the support (1). The smooth rod section (22) is slidably connected to the mounting plate (4). The upper end of the support fixing column (2) passes through the mounting plate (4) and is threadedly connected to the support (1).

3. The oil receiving device preload detection device according to claim 1, characterized in that, The bottom of the mounting plate (4) is provided with a left-hand threaded hole (41) that is threaded to the screw (6). The periphery of the mounting plate (4) is provided with a sensor mounting hole (42). Both sides are provided with through holes (43) that are slidably connected to the smooth rod section (22) of the support fixing column (2). One end of the sensor mounting screw (5) passes through the sensor mounting hole (42) and is fixedly connected to the sensor.

4. The oil receiving device preload detection device according to claim 3, characterized in that, The upper and lower ends of the screw (6) are respectively provided with a left-hand threaded section (61) and a right-hand threaded section (63), and the top of the support (7) is provided with a right-hand threaded hole (71).

5. A preload detection device for an oil receiving device according to claim 1 or 3, characterized in that, The screw (6) has a hexagonal middle section (62) in the middle, which is used to adjust the height of the preload detection device.

6. The preload detection device for an oil receiving device according to claim 1, characterized in that, The locking mechanism includes a locking key (9) and a screw with a safety hole (10). The bottom of the mounting plate (4) and the top of the support (7) are respectively provided with a number of first keyways (44) and third keyways (73) along their circumference. The outer side of the screw (6) is provided with a second keyway (64), and the second keyway (64) is provided with a threaded hole. The locking key (9) is connected to the first keyway (44), the second keyway (64) and the third keyway (73) respectively, and the screw with a safety hole (10) passes through the locking key (9) and is threadedly connected to the threaded hole inside the second keyway (64).

7. The oil receiving device preload detection device according to claim 6, characterized in that, The locking key (9) has a support (7) vertically arranged on its outer side, and a safety hole (92) is provided in the middle of the support (7).

8. The oil receiving device preload detection device according to claim 1, characterized in that, The periphery of the support (7) is fixed to the bottom structure by support mounting screws (8).

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