A dynamic frame of a six-component force test bench

Abstract

A dynamic frame of a six-component force test bench, characterized in that it 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 dynamic frame of the six-component force test bench of the present invention is rigidly connected to the test piece through the rear plate of the adapter frame, the center frame supports and fixes the tail of the test piece, the adjustment wheel adjusts the installation position of the test piece to make it coaxial with the dynamic frame for precise positioning, and the measuring device is connected to the in-situ calibration device through the center sleeve, thereby 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.

Description

Technical Field

[0001] The invention relates to the technical field of thrust measurement, in particular to a dynamic frame of a six-component force test bench. Background Art

[0002] Engine test and testing technology is an important part of solid propulsion technology, and thrust vector eccentricity is an important parameter that needs to be measured in engine test and testing. To study the engine thrust vector eccentricity, a large number of repeated tests are required, and it is impossible to put all these tests into flight tests. The main reason is that flight tests are costly, have long cycles, yield little information, are risky, and require a lot of manpower. This requires engine ground test runs. Engine ground tests refer to static tests of the system on the ground according to specific conditions and environmental requirements to obtain information describing the various performance indicators of the system in order to solve key problems in the engine thrust eccentricity test process.

[0003] With the development of domestic engine testing technology, some large engines have adopted thrust vector control devices. At present, multi-component force models and multi-component force test benches are mainly used to measure thrust vector at home and abroad. Among them, the six-component force measurement method is more commonly used. However, the six-component force vector thrust measurement technology in the existing technology, especially the horizontal six-component force vector thrust measurement technology, in which the six-component force test bench dynamic frame is a component that supports the engine and transmits the engine's axial thrust, horizontal lateral thrust and vertical lateral force. It must ensure the coaxiality of the engine, the force measuring device and the in-situ calibration device, and have greater rigidity. At the same time, it must ensure the dynamic performance of the test bench, which is the design difficulty of the six-component force test bench. Summary of the invention

[0004] The technical problem solved by the present invention is to overcome the deficiencies of the prior art and provide a dynamic frame of a six-component test bench.

[0005] The technical solution of the present invention is: a dynamic frame of a six-component test bench, including 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.

[0006] Furthermore, the adapter frame includes 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.

[0007] Furthermore, a center sleeve is fixed on the front plate.

[0008] Furthermore, there are four load-bearing tubes, which are symmetrically arranged in the same plane relative to the axial direction of the test piece.

[0009] Furthermore, 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.

[0010] Furthermore, two adjusting wheels pass through the upper cover, and two adjusting wheels pass through the lower body.

[0011] Furthermore, the reinforcing plate includes a flat plate and an adjusting bracket, and the adjusting bracket is fixed on the flat plate.

[0012] Furthermore, the adjustment bracket includes a test piece connecting plate, a lifting adjustment device and an adjustment bracket fixing seat; the two ends of the lifting adjustment device are respectively connected to the test piece connecting plate and the adjustment bracket fixing seat, the test piece connecting plate is connected to the test piece, and the adjustment bracket fixing seat is fixedly connected to the flat plate.

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

[0014] Furthermore, the test piece is a gas turbine engine or a gas turbine engine simulation test piece.

[0015] The advantages of the present invention compared with the prior art are:

[0016] 1. The movable frame of the six-component test bench of the present invention is rigidly connected to the test piece through the rear plate of the adapter frame, the center 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 movable frame for precise positioning, and the measuring device is connected to the in-situ calibration device through the center sleeve, thereby achieving 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.

[0017] 2. The dynamic frame of the six-component test bench of the present invention has a large overall rigidity. 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 strength of the structure is adopted, the non-stressed parts of the material are removed, and other optimized designs are used to reduce the mass of the dynamic frame.

[0018] 3. The dynamic frame of the six-component test bench of the present invention is provided with an adjustment bracket on the reinforcement plate, so that the height of the connecting plate can 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.

[0019] 4. The dynamic frame of the six-component test bench of the present invention has a truss structure composed of five horizontal support tubes and multiple groups of inclined support tubes, which are used to connect the adapter frame and the center frame, and at the same time withstand the deformation caused by horizontal and lateral forces to ensure the rigidity of the dynamic frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of the dynamic frame of the six-component force test bench of the present invention.

[0021] Figure 2 It is a structural schematic diagram of the adapter frame of the six-component force test bench moving frame of the present invention.

[0022] Figure 3 It is a structural schematic diagram of the center frame of the dynamic frame of the six-component test bench of the present invention.

[0023] Figure 4 It is a schematic structural diagram of the reinforcement plate of the dynamic frame of the six-component force test bench of the present invention. DETAILED DESCRIPTION

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", and "abutment" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] A six-component test bench dynamic frame is a device that supports a test piece 10 and transmits the axial thrust, horizontal lateral thrust and vertical lateral force generated by the test piece 10. The length is about 3200mm, the circumferential size is about 900mm×900mm, and the weight is about 500kg. It specifically includes an adapter frame 110, a center frame 120, a reinforcing plate 130 and a truss 140. Along the axial direction of the test piece 10, the adapter frame 110, the truss 140 and the center frame 120 are fixedly connected in sequence, and the reinforcing plate 130 is installed on the test piece 10. The adapter frame 110 is a component that connects the test piece 10 with the measuring device, and includes a front plate 112, a load-bearing tube 113 and a rear plate 114 that are fixedly connected in sequence, and the rear plate 114 is connected to the truss 140. A center sleeve 111 is fixed on the front plate 112, and the measuring device is connected to the in-situ calibration device through the center sleeve 111, and the coaxiality of each component is ensured by means of pins; wherein, there are four load-bearing tubes 113, which are symmetrically arranged in the same plane relative to the axial direction of the test piece, so as to reasonably distribute the force by adopting the principle of structural equal strength. The center frame 120 is a component used to support and fix the tail of the test piece, which includes an upper cover 121, a lower body 123 and an adjustment wheel 122; the upper cover 121 and the lower body 123 are fixedly connected, and there are four adjustment wheels 122, which are symmetrically arranged in the same plane relative to the axial direction of the test piece 10, and two adjustment wheels 122 pass through the upper cover 121, and two adjustment wheels 122 pass through the lower body 123. By setting the adjustment wheels, the installation position of the test piece 10 is coaxial with the moving frame for precise positioning. The reinforcing plate 130 is a component used to withstand tens of tons of internal force generated by the test piece itself, and 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, which are symmetrically connected to the test piece 10 up and down. 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 two ends of the lifting and adjusting device 1323 are respectively connected to the test piece connecting plate 1321 and the adjusting bracket fixing seat 1322. The lifting and adjusting device 1323 can be in the form of a hydraulic cylinder, a 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 that the connecting plate 1321 is in reliable contact with the test piece 10 and plays a supporting role. The truss 140 is composed of five horizontal support tubes and multiple groups of oblique support tubes, and is used to connect the adapter frame 110 and the center frame 120, while bearing the deformation caused by horizontal and lateral forces to ensure the rigidity of the moving frame.

[0027] Preferably, the flat 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 .

[0028] Preferably, there are two adjustment brackets 132 , which are arranged along the axial direction of the test piece 10 to further improve the coaxiality of the test piece 10 .

[0029] Preferably, the test piece 10 is a gas turbine engine or a gas turbine engine simulation test piece.

[0030] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0031] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A dynamic frame of a six-component test bench, characterized in that: It 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 adapter frame includes a front plate, a load-bearing tube and a rear plate which are fixedly connected in sequence, the rear plate is connected to the truss, and a center sleeve is fixed on the front plate; 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; The reinforcing plate includes a flat plate and an adjusting bracket, and the adjusting bracket is fixed on the flat plate; the adjusting 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; The truss includes five horizontal support tubes, and the five horizontal support tubes are connected to the adapter frame and the center frame; The flat plate is provided with a bracket connection hole, the bracket connection hole is connected to the test piece, and there are two adjustment brackets, which are arranged along the axial direction of the test piece; The rear plate of the adapter frame is rigidly connected to the test piece, the center 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, and the measuring device is connected to the in-situ calibration device through the center sleeve.

2. The dynamic frame of the six-component test bench according to claim 1 is 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.

3. The dynamic frame of the six-component test bench according to claim 1 is characterized in that: The test piece is a gas turbine engine or a gas turbine engine simulation test piece.

Images