Vector force loading device

Abstract

A vector force loading device includes a mounting seat, a vector force loading cylinder, a fixed pulley, a force sensor and a steel wire rope; the mounting seat is fixed on the fixed frame, the vector force loading cylinder and the fixed pulley are fixed on the mounting seat, one end of the steel wire rope is fixed on the moving frame, and the other end is fixed on the vector force loading cylinder, the steel wire rope passes around the fixed pulley, and the force sensor is arranged on the steel wire rope. The vector force loading device of the present invention simulates the direction angle of the vector force with a geometric angle, the angle is adjustable, the structure is simple, and the force applied by the flexible stainless steel thin steel wire rope basically does not produce additional constraints on the moving frame.

Description

Technical Field

[0001] This invention relates to the field of thrust measurement technology, and in particular to a vector force loading device. Background Technology

[0002] With the development of vector thrust engines, accurate testing of vector thrust has become an effective measure to verify the basic data of the engine or thrust vector nozzle. Testing vector engines requires a vector thrust test bench, and to ensure the accuracy of the test data, relevant calibration work is necessary. The biggest difference between vector test bench calibration and axial test bench calibration is that the simulated thrust applied during vector test bench calibration is a spatial vector force, while the simulated thrust applied during axial test bench calibration is a single-direction thrust. Current domestic vector bench calibration technology is limited to calibrating a single component individually. This method can only apply simulated thrust in one direction along three directions, and cannot simulate spatial vector forces. The calibration results obtained by applying simulated thrust in one direction cannot directly indicate the performance of the vector thrust measurement system and cannot meet the requirements for accurate vector thrust measurement. To obtain accurate thrust test results during vector engine testing and correctly evaluate engine performance, it is necessary to apply spatial vector forces to the vector test bench to simulate the thrust of the vector engine, thereby calibrating the vector test bench and understanding the interaction between force sensors. However, the existing vector force loading devices have complex structures, which lead to increased cumulative errors. Summary of the Invention

[0003] The technical problem solved by the present invention is to overcome the shortcomings of the prior art and provide a vector force loading device.

[0004] The technical solution of the present invention is: a vector force loading device, including a mounting base, a vector force loading cylinder, a fixed pulley, a force sensor, and a wire rope; the mounting base is fixed on a fixed frame, the vector force loading cylinder and the fixed pulley are fixed on the mounting base, one end of the wire rope is fixed on a moving frame, the other end is fixed on the vector force loading cylinder, the wire rope passes around the fixed pulley, and the force sensor is set on the wire rope.

[0005] Furthermore, the wire rope includes a first section and a second section. One end of the first section of the wire rope is fixed to the vector force loading cylinder, and the other end is connected to one end of the force sensor. One end of the second section of the wire rope is fixed to the moving frame, and the other end is connected to the other end of the force sensor. The first section of the wire rope passes over a fixed pulley.

[0006] Furthermore, the vector force loading cylinder is either a hydraulic cylinder or a pneumatic cylinder.

[0007] Furthermore, the moving frame includes a transition frame, a central frame, a reinforcing plate, and a truss; along the axial direction of the test piece, the transition frame, the truss, and the central frame are fixedly connected in sequence, and the reinforcing plate is installed on the test piece.

[0008] Furthermore, the adapter frame includes a front plate, a load-bearing tube, and a rear plate that are fixedly connected in sequence, with the rear plate connected to the truss.

[0009] Furthermore, a center sleeve is fixed on the front panel.

[0010] Furthermore, there are four load-bearing tubes, symmetrically arranged in the same plane relative to the axial direction of the test piece.

[0011] Furthermore, the center frame includes an upper cover, a lower body, and adjusting wheels; the upper cover and the lower body are fixedly connected, and there are 4 adjusting wheels. The 4 adjusting wheels are symmetrically arranged in the same plane relative to the axial direction of the test piece, with 2 adjusting wheels passing through the upper cover and 2 adjusting wheels passing through the lower body.

[0012] Furthermore, the reinforcing plate includes a flat plate and an adjusting bracket, with the adjusting bracket fixed on the flat plate; the adjusting bracket includes a test piece connecting plate, a lifting adjusting device, and an adjusting bracket fixing seat; the lifting adjusting device is connected to the test piece connecting plate and the adjusting bracket fixing seat at both ends respectively, the test piece connecting plate is connected to the test piece, and the adjusting bracket fixing seat is fixedly connected to the flat plate.

[0013] Furthermore, there are two adjustment brackets, which are set along the axial direction of the test piece.

[0014] The advantages of the present invention compared with the prior art are:

[0015] 1. The vector force loading device of the present invention uses geometric angles to simulate the direction angle of vector force, and its angle is adjustable and has a simple structure.

[0016] 2. The vector force loading device of the present invention uses a flexible stainless steel wire rope to apply a force that does not generate additional constraints on the moving frame.

[0017] 3. In the vector force loading device of the present invention, the moving frame is rigidly connected to the test piece through the rear plate of the adapter frame, the central frame supports and fixes the tail of the test piece, the adjusting wheel adjusts the installation position of the test piece to make it coaxial with the moving frame for precise positioning, and the measuring device is connected to the in-situ calibration device through the central sleeve, thus realizing the coaxiality of the test piece, the force measuring device and the in-situ calibration device. The structure is simple and the installation of the measuring device and the test piece is simple and easy.

[0018] 4. In the vector force loading device of the present invention, the overall rigidity of the moving frame is relatively large. In order to ensure the dynamic performance of the test frame, the force-bearing elements are reasonably distributed in the design, the principle of equal structural strength is adopted, and the unloaded parts of the material are removed, etc., to optimize the design and reduce the mass of the moving frame.

[0019] 5. In the vector force loading device of the present invention, an adjustable bracket is provided on the reinforcing plate of the moving frame to enable the height of the connecting plate to be adjusted within a certain range, so as to ensure reliable contact between the connecting plate and the test piece and play a supporting role.

[0020] 6. The vector force loading device of the present invention, wherein the truss structure of the moving frame is composed of five horizontal support pipes and multiple sets of inclined support pipes, which are used to connect the transition frame and the central frame, and at the same time bear the deformation caused by horizontal and lateral forces to ensure the rigidity of the moving frame. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the vector force loading device of the present invention.

[0022] Figure 2 This is a schematic diagram of the moving frame of the present invention.

[0023] Figure 3 This is a schematic diagram of the structure of the transfer frame in the moving frame of the present invention.

[0024] Figure 4 This is a schematic diagram of the structure of the central frame in the moving frame of the present invention.

[0025] Figure 5 This is a schematic diagram of the reinforcing plate in the moving frame of the present invention. Detailed Implementation

[0026] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the 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 of the invention. Furthermore, features defined with "first" or "second" 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.

[0027] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "abutment" 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 communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0028] A vector force loading device 300 includes a mounting base 310, a vector force loading cylinder 320, a fixed pulley 330, a force sensor 340, and a wire rope 350. The mounting base 310 is fixed on a fixed frame 200. The vector force loading cylinder 320 and the fixed pulley 330 are fixed on the mounting base 310. One end of the wire rope 350 is fixed on a movable frame 100, and the other end is fixed on the vector force loading cylinder 320. The wire rope 350 passes around the fixed pulley, and the force sensor 340 is mounted on the wire rope 350.

[0029] Preferably, the wire rope 350 includes a first segment and a second segment. One end of the first segment of the wire rope 350 is fixed to the vector force loading cylinder 320, and the other end is connected to one end of the force sensor 340. One end of the second segment of the wire rope 350 is fixed to the moving frame 100, and the other end is connected to the other end of the force sensor 340. The first segment of the wire rope 350 passes around the fixed pulley.

[0030] Preferably, the vector force loading cylinder 320 is a hydraulic cylinder or a pneumatic cylinder.

[0031] Preferably, the steel wire rope 350 is a flexible stainless steel wire rope, made of 304 (elastic modulus E = 194 GPa), with a tensile strength σ b Not less than 520MPa.

[0032] During operation, the mounting base 310 is fixed on the fixed frame 100 according to the predetermined position, so that the vector force provided by the wire rope 350 coincides with the direction of the predetermined vector force. The vector force loading cylinder 320 generates axial displacement, and the direction of the force is changed through the fixed pulley 330. The wire rope 350 generates a vector force that is adjustable in magnitude and fixed in direction; the force value is measured by the force sensor 340.

[0033] Preferably, the six-component test bench is a device that supports the test piece 10 and transmits the axial thrust, horizontal lateral thrust, and vertical lateral force generated by it. It has a length of approximately 3200 mm, a circumferential dimension of approximately 900 mm × 900 mm, and a weight of approximately 500 kg. Specifically, it includes a transition frame 110, a central frame 120, a reinforcing plate 130, and a truss 140. Along the axial direction of the test piece 10, the transition frame 110, the truss 140, and the central frame 120 are sequentially fixedly connected, and the reinforcing plate 130 is installed on the test piece 10. The transition frame 110 is a component connecting the test piece 10 and the measuring device, and it includes a front plate 112, a load-bearing tube 113, and a rear plate 114 sequentially fixedly connected, with the rear plate 114 connected to the truss 140. A central sleeve 111 is fixed on the front plate 112. The measuring device is connected to the in-situ calibration device through the central sleeve 111, and the coaxiality of each component is ensured by using pins. There are four load-bearing tubes 113, which are symmetrically arranged in the same plane relative to the axial direction of the test piece to reasonably distribute the force according to the principle of equal structural strength. The central frame 120 is a component used to support and fix the tail of the test piece. It includes an upper cover 121, a lower body 123, and adjusting wheels 122. The upper cover 121 and the lower body 123 are fixedly connected. There are four adjusting wheels 122, which are symmetrically arranged in the same plane relative to the axial direction of the test piece 10. Two adjusting wheels 122 pass through the upper cover 121, and two adjusting wheels 122 pass through the lower body 123. By setting the adjusting wheels, the installation position of the test piece 10 is made coaxial with the moving frame for precise positioning. The reinforcing plate 130 is a component used to withstand the internal force of tens of tons generated by the test piece itself. It includes a flat plate 131 and an adjusting bracket 132. The adjusting bracket 132 is fixed on the flat plate 131. There are two reinforcing plates 130, symmetrically connected to the test piece 10. The adjusting bracket 132 includes a test piece connecting plate 1321, a lifting and adjusting device 1323, and an adjusting bracket fixing seat 1322. The lifting and adjusting device 1323 is connected to the test piece connecting plate 1321 and the adjusting bracket fixing seat 1322 at both ends. The lifting and adjusting device 1323 can be in the form of a hydraulic cylinder, a pneumatic cylinder, a worm gear, etc. The test piece connecting plate 1321 is connected to the test piece 10, and the adjusting bracket fixing seat 1322 is fixedly connected to the flat plate 131. By setting the lifting and adjusting device 1323, the height of the test piece connecting plate 1321 can be adjusted within a certain range to ensure reliable contact between the connecting plate 1321 and the test piece 10, thus providing support. The truss 140 consists of five horizontal support tubes and multiple sets of diagonal support tubes, which are used to connect the transition frame 110 and the central frame 120, and at the same time bear the deformation caused by horizontal and lateral forces to ensure the rigidity of the moving frame.

[0034] Preferably, the plate 131 is provided with a bracket connection hole for connecting with the test piece 10 and ensuring the coaxiality of the test piece 10.

[0035] Preferably, there are two adjusting brackets 132, which are arranged along the axial direction of the test piece 10 to further improve the coaxiality of the test piece 10.

[0036] Preferably, the test piece 10 is a gas turbine engine simulation test piece.

[0037] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0038] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A vector force loading device, characterized in that: It includes a mounting base, a vector force loading cylinder, a fixed pulley, a force sensor and a steel wire rope; The mounting seat is fixed on the fixed frame, the vector force loading cylinder and the fixed pulley are fixed on the mounting seat, one end of the wire rope is fixed on the moving frame, and the other end is fixed on the vector force loading cylinder, the wire rope goes around the fixed pulley, and the force sensor is set on the wire rope; The steel wire rope comprises a first section and a second section, one end of the first section of the steel wire rope is fixed on the vector force loading cylinder, and the other end is connected to one end of the force sensor, one end of the second section of the steel wire rope is fixed on the moving frame, and the other end is connected to the other end of the force sensor, the first section of the steel wire rope passes around the fixed pulley, and the vector force loading cylinder is an oil cylinder or an air cylinder; the mounting seat is fixed on the fixed frame, and the vector force provided by the steel wire rope coincides with the direction of the predetermined vector force; The movable frame includes an adapter frame, a center frame, a reinforcement plate and a truss; along the axial direction of the test piece, the adapter frame, the truss and the center frame are fixedly connected in sequence, and the reinforcement plate is installed on the test piece; the reinforcement plate includes a flat plate and an adjustment bracket, and the adjustment bracket is fixed on the flat plate; the adjustment bracket includes a test piece connecting plate, a lifting and adjusting device and an adjusting bracket fixing seat; the two ends of the lifting and adjusting device are respectively connected to the test piece connecting plate and the adjusting bracket fixing seat, the test piece connecting plate is connected to the test piece, and the adjusting bracket fixing seat is fixedly connected to the flat plate; there are two adjusting brackets, which are arranged along the axial direction of the test piece.

2. The vector force loading device according to claim 1, characterized in that: The adapter frame comprises a front plate, a load-bearing tube and a rear plate which are fixedly connected in sequence, and the rear plate is connected to the truss.

3. The vector force loading device according to claim 1, characterized in that: A center sleeve is fixed on the front plate.

4. The vector force loading device according to claim 1, characterized in that: There are four load-bearing tubes, which are symmetrically arranged in the same plane relative to the axial direction of the test piece.

5. The vector force loading device according to claim 1, characterized in that: The center frame includes an upper cover, a lower body and an adjusting wheel; the upper cover and the lower body are fixedly connected, there are four adjusting wheels, and the four adjusting wheels are symmetrically arranged in the same plane relative to the axial direction of the test piece, two adjusting wheels pass through the upper cover, and two adjusting wheels pass through the lower body.

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