Engine thrust measuring equipment

Abstract

The invention discloses engine thrust force measuring equipment, which comprises an engine support, an engine thrust table force measuring device and an engine thrust table locking device, and is characterized in that the engine support is used for supporting an engine; the engine thrust table locking device comprises a sliding rail and a sliding positioning assembly. The length direction of the sliding rail is consistent with the thrust direction of an engine. The engine thrust table force measuring device comprises a plurality of force measuring parts, the upper sides of the force measuring parts are connected with the engine support, the lower sides of the force measuring parts are connected with the sliding rails in a sliding mode, the sliding positioning assembly is used for being locked with the sliding rails so that the engine thrust table locking device can be in a static state, and the force measuring parts correspond to the models of engines. On the basis, the position of the engine thrust table locking device in the axis direction of the engine can be adjusted according to requirements, engines of different models can be better detected, and the engine thrust detection accuracy is improved.

Description

Technical Field

[0001] The present invention belongs to the field of engine detection, and particularly relates to an engine thrust measuring device. Background Art

[0002] An aircraft engine thrust stand is a device specifically used to test the thrust performance of an aircraft engine. To achieve the measurement of axial loads at different distances of the engine thrust and the accuracy within the full range, it is necessary to be equipped with multiple sets of measuring components with different ranges for different load intervals. However, the switching or addition operation between different measuring components is difficult, and the stability during thrust detection causes inaccurate thrust detection.

[0003] Currently, by setting up a slide rail, the engine can be movably connected to the slide rail, so as to test the thrust of the engine at different positions on the slide rail. Among them, the patent with the publication number CN203672523U discloses a comprehensive test bench for an unmanned aerial vehicle engine, which includes a fixed frame. The number of fixed frames is two, and the two fixed frames are fixed by two front and rear connecting blocks. Limiting blocks are respectively arranged at both ends of the fixed frame, and two slide rails are arranged in the middle. The guide rails passing through the sliders are connected between the limiting blocks. The test bench is fixed to the slider through a slider connecting frame at the bottom with bolts; both ends of the outer wall of the side of the slider connecting frame are connected to the limiting blocks through locking bolts, and the middle part is connected to the engine support frame through bolts; the engine equipped with a propeller is fixed to the engine support frame through bolts; pressure sensors I and II are respectively arranged on the two front and rear connecting blocks. The utility model has a small volume, is easy to install and convenient to carry. The upper sliding part is supported by the slide rail and can slide freely on the guide rail, so as to test the pulling force and thrust of the engine through the pressure sensors at both ends, ensuring the test accuracy.

[0004] In the above patent, although the thrust of the engine at different ranges can be detected by the sliding of the engine on the slide rail, when the engine is doing a thrust test, the magnitude of its thrust is not a fixed value and will change. Therefore, the engine will displace on the slide rail, resulting in inaccurate measurement. Moreover, engines of different models have different sizes and are not exactly the same, which will also cause it to be adapted to the support frame, thus also leading to inaccurate detection of the engine thrust. Summary of the Invention

[0005] The present invention provides an engine thrust measuring device, which improves the accuracy of engine thrust detection.

[0006] According to the first aspect of the present invention, there is provided an engine thrust measuring device, comprising:

[0007] An engine support frame for supporting the engine;

[0008] Engine thrust platform locking device, the engine thrust platform locking device includes a slide rail and a sliding positioning component, and the length direction of the slide rail is consistent with the thrust direction of the engine;

[0009] Engine thrust platform force measuring device, the engine thrust platform force measuring device includes a plurality of force measuring components, the upper side of the force measuring component is connected to the engine bracket, the lower side of the force measuring component is slidably connected to the slide rail, and the sliding positioning component is used to lock with the slide rail so that the engine thrust platform locking device is in a stationary state, and the force measuring component corresponds to the model of the engine.

[0010] Optionally, the engine thrust force measuring equipment includes:

[0011] Control device, the control device is respectively connected to the engine thrust platform force measuring device and the engine thrust platform locking device;

[0012] The control device is used to determine the model information of the engine according to the size information of the engine, and drive the force measuring component corresponding to the model information to be connected to the engine bracket according to the corresponding relationship between the preset model information and the preset force measuring component;

[0013] The control device is also used to control the engine thrust platform locking device so that the engine thrust platform locking device drives the engine thrust platform force measuring device to move along the axis direction of the engine.

[0014] Optionally, the engine thrust platform force measuring device includes:

[0015] First mounting plate, one end of each force measuring component is connected to the first mounting plate, and the first mounting plate is connected to the engine thrust platform locking device;

[0016] Second mounting plate, the other end of each force measuring component is connected to the second mounting plate, and the second mounting plate is connected to the engine bracket;

[0017] The force measuring components all include a force measuring assembly and a calibration assembly, the force measuring assembly and the calibration assembly are arranged between the first mounting plate and the second mounting plate, and the force measuring assembly and the calibration assembly are respectively connected to the first mounting plate and the second mounting plate.

[0018] Optionally, the force measuring assembly includes:

[0019] First mounting seat, the first mounting seat is detachably connected to the first mounting plate;

[0020] Second mounting seat, the second mounting seat is detachably connected to the second mounting plate;

[0021] Force measuring sensor, both ends of the force measuring sensor are respectively connected to the first mounting seat and the second mounting seat.

[0022] Optionally, the calibration assembly includes:

[0023] The third mounting seat, which is detachably connected to the first mounting plate;

[0024] The fourth mounting seat, which is detachably connected to the second mounting plate;

[0025] The calibration sensor, with both ends thereof respectively connected to the third mounting seat and the fourth mounting seat;

[0026] The hydraulic cylinder, which is connected to one end of the third mounting seat away from the calibration sensor.

[0027] Optionally, the engine thrust stand force measuring device further includes:

[0028] The spring plate, which is located on one side of the first mounting plate and the second mounting plate along the thrust direction, and both ends of the spring plate are respectively connected to the first mounting plate and the second mounting plate.

[0029] Optionally, the engine thrust stand force measuring device further includes:

[0030] The support frame, which includes: a support rod and a support plate. The number of the support plates is two, and the two support plates are respectively connected to both ends of the support rod. One support plate is connected to the first mounting plate, and the other support plate is connected to the second mounting plate.

[0031] Optionally, the engine thrust stand locking device includes:

[0032] The base, on which the slide rail is installed;

[0033] The drive assembly, which is installed on the base and is connected to the engine thrust stand force measuring device for driving the engine thrust stand force measuring device to move along the slide rail.

[0034] Optionally, the drive assembly includes:

[0035] The drive motor;

[0036] The lead screw, which is connected to the output shaft of the drive motor;

[0037] The lead screw nut, which is connected to the lead screw and is connected to the engine thrust stand force measuring device. The output shaft of the drive motor rotates to drive the lead screw nut to drive the engine thrust stand force measuring device to move along the length direction of the slide rail.

[0038] Optionally, the sliding positioning assembly includes:

[0039] The positioning block, which is fixedly connected to the engine thrust stand force measuring device and is used for being fixedly connected to the slide rail according to the positioning signal.

[0040] The technical solutions provided by the embodiments of the present invention at least bring the following beneficial effects:

[0041] An embodiment of the present invention provides an engine thrust measuring device, including an engine bracket, an engine thrust platform measuring device, and an engine thrust platform locking device. The engine bracket is used to support the engine; the engine thrust platform locking device includes a slide rail and a sliding positioning component, and the length direction of the slide rail is consistent with the thrust direction of the engine; the engine thrust platform measuring device includes a plurality of measuring components. The upper side of the measuring component is connected to the engine bracket, and the lower side of the measuring component is slidably connected to the slide rail. The sliding positioning component is used to lock with the slide rail so that the engine thrust platform locking device is in a stationary state, and the measuring component corresponds to the model of the engine. Based on this, the engine thrust platform measuring device is connected to the engine bracket, and the engine bracket is used to support the engine. The engine thrust platform measuring device is also connected to the engine thrust platform locking device. The engine thrust platform locking device includes a slide rail and a sliding positioning component. For the measuring component moving on the slide rail, it can be positioned on the slide rail through the action of the sliding positioning component. Once the sliding positioning component cancels its action on the engine thrust platform measuring device, the engine thrust platform measuring device can continue to slide on the slide rail, thus realizing the movement or stillness of the engine thrust platform measuring device in the axial direction, and the position of the engine thrust platform locking device in the engine axial direction can be adjusted according to requirements, which also enables the position of the engine on its axis to be adjusted. For the engine thrust platform measuring device, for different models of engines, measuring components corresponding to the engines can be selected to detect the engine, so as to better detect the thrust of the engine, improve the accuracy of engine thrust detection, and also better detect different models of engines, improving the applicability of engine thrust detection.

[0042] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The accompanying drawings here are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present invention, and are used together with the specification to explain the principles of the present invention, and do not constitute an improper limitation to the present invention.

[0044] Figure 1 is a schematic structural diagram of an engine thrust measuring device shown according to an exemplary embodiment;

[0045] Figure 2 is a schematic structural diagram of an engine thrust platform measuring device in an engine thrust measuring device shown according to an exemplary embodiment;

[0046] Figure 3 is a schematic structural diagram of a measuring component in an engine thrust measuring device shown according to an exemplary embodiment;

[0047] Figure 4 is a schematic structural diagram of a calibration component in an engine thrust measuring device shown according to an exemplary embodiment;

[0048] Figure 5 is a schematic structural diagram of an engine thrust stand locking device in an engine thrust measuring device shown according to an exemplary embodiment;

[0049] Figure 6 is another schematic structural diagram of an engine thrust stand locking device in an engine thrust measuring device shown according to an exemplary embodiment.

[0050] Legend Explanation:

[0051]

[0052] Detailed Implementation Manner

[0053] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is 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 thus cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0054] In the present invention, unless otherwise clearly specified and defined, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention.

[0056] In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. Many specific details are set forth in the following description in order to fully understand the present disclosure, but the present disclosure can also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only a part of the embodiments of the present disclosure, rather than all the embodiments.

[0057] In order to more clearly understand the above-mentioned objects, features, and advantages of the present disclosure, the solution of the present disclosure will be further described below. It should be noted that, without conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other.

[0058] Based on this, the present invention provides an engine thrust measuring device. First, the engine thrust measuring device provided by the embodiments of the present invention will be introduced below.

[0059] As Figures 1-6 shown, the engine thrust measuring device may include the following structures:

[0060] Embodiment 1;

[0061] The engine thrust measuring device 1 may include:

[0062] An engine bracket 11, and the engine bracket 11 is used to support the engine;

[0063] An engine thrust platform locking device 13, and the engine thrust platform locking device 13 includes a slide rail 132 and a sliding positioning assembly 134134, and the length direction of the slide rail 132 is consistent with the thrust direction of the engine;

[0064] An engine thrust platform measuring device 12, and the engine thrust platform measuring device 12 includes a plurality of measuring components 122. The upper side of the measuring component 122 is connected to the engine bracket 11, the lower side of the measuring component 122 is slidably connected to the slide rail 132, and the sliding positioning assembly 134 is used to lock with the slide rail 132 so that the engine thrust platform locking device 13 is in a static state, and the measuring component 122 corresponds to the model of the engine.

[0065] The engine thrust stand force measuring device 12 is connected to the engine bracket 11 and uses the engine bracket 11 to support the engine. The engine thrust stand force measuring device 12 is also connected to the engine thrust stand locking device 13. The engine thrust stand locking device 13 includes a slide rail 132 and a sliding positioning component 134. For the force measuring component 122 moving on the slide rail 132, it can be positioned on the slide rail 132 through the action of the sliding positioning component 134. Once the sliding positioning component 134 cancels its action on the engine thrust stand force measuring device 12, the engine thrust stand force measuring device 12 can continue to slide on the slide rail 132, thereby realizing the movement or stillness of the engine thrust stand force measuring device 12 in the axial direction, and the position of the engine thrust stand locking device 13 in the engine axial direction can be adjusted according to requirements, which also enables the position of the engine on its axis to be adjusted. For the engine thrust stand force measuring device 12, for different models of engines, a force measuring component 122 corresponding to the engine can be selected to detect the engine, so as to better detect the thrust of the engine, improve the accuracy of the engine thrust detection, and also better detect different models of engines, improving the applicability of the engine thrust detection.

[0066] Optionally, in one example, the engine thrust force measuring device 1 includes:

[0067] A control device, which is respectively connected to the engine thrust stand force measuring device 12 and the engine thrust stand locking device 13;

[0068] The control device is used to determine the model information of the engine according to the size information of the engine, and drive the force measuring component 122 corresponding to the model information to be connected to the engine bracket 11 according to the corresponding relationship between the preset model information and the preset force measuring component 122;

[0069] The control device is also used to control the engine thrust stand locking device 13, so that the engine thrust stand locking device 13 drives the engine thrust stand force measuring device 12 to move along the axis of the engine.

[0070] The operator can operate the control device and input the size information of the engine to the control device. The control device can determine the model information of the engine according to the size information of the engine. In order to improve the accuracy of the engine thrust detection, for different model information, there is a preset force measuring component 122 corresponding to it to detect the engine thrust. Thus, the control device can control the corresponding force measuring component 122 to be connected to the engine bracket 11 according to different model information, so that the force measuring component 122 can detect the thrust value of the thrust generated by the engine.

[0071] The operator can also control the engine thrust stand locking device 13 by operating the handle, buttons, or inputting control signals, so that the engine thrust stand locking device 13 can be controlled according to the control signals to be in a moving or prohibited state, thereby adjusting the position when measuring the engine thrust, and thus improving the accuracy of measuring the engine thrust.

[0072] By setting the control device, it is convenient to control the engine thrust stand force measuring device 12 and the engine thrust stand locking device 13, which can significantly improve the automation level, accuracy and safety of the test, and at the same time improve the test efficiency and adaptability.

[0073] Embodiment 2:

[0074] The engine thrust stand force measuring device 12 includes:

[0075] The first mounting plate 123, one end of each force measuring component 122 is connected to the first mounting plate 123, and the first mounting plate 123 is connected to the engine thrust stand locking device 13;

[0076] The second mounting plate 124, the other end of each force measuring component 122 is connected to the second mounting plate 124, and the second mounting plate 124 is connected to the engine bracket 11. The force measuring components 122 each include a force measuring assembly 125 and a calibration assembly 126. The force measuring assembly 125 and the calibration assembly 126 are arranged between the first mounting plate 123 and the second mounting plate 124, and the force measuring assembly 125 and the calibration assembly 126 are respectively connected to the first mounting plate 123 and the second mounting plate 124.

[0077] The engine can be fixed on the engine support 11, and the engine thrust platform locking device 13 enables the engine thrust platform measuring device 12 to be fixed when the engine starts. When the engine starts, the thrust generated by the engine will drive the second mounting plate 124 to generate a displacement along the engine axis direction through the engine support 11. Since the first mounting plate 123 is fixed by the engine thrust platform locking device 13, a relative displacement caused by the engine thrust will be generated between the first mounting plate 123 and the second mounting plate 124. By installing the force measuring component 122 between the first mounting plate 123 and the second mounting plate 124, the thrust generated by the engine can be calculated according to the displacement amount between the first mounting plate 123 and the second mounting plate 124. Due to the influence of bench manufacturing and thermal deformation, a certain displacement may occur between the first mounting plate 123 and the second mounting plate 124, and thus there is a force, which will affect the accuracy of measuring the engine thrust. Therefore, when using the force measuring component 122, it is necessary to calibrate the first mounting plate 123 and the second mounting plate 124 through the calibration component 126 first, and then use the force measuring component 125 to measure the thrust generated by the engine.

[0078] Since the number of the force measuring components 122 is multiple, for engines of different sizes and models, in order to improve the detection accuracy, the lifting drive member 121 can be used to drive the force measuring component 122 corresponding to the size and model of the engine to rise to connect with the second mounting plate 124, or to drive the corresponding force measuring component 122 to lower to connect with the first mounting plate 123, so that the engine thrust platform measuring device 12 can accurately detect the thrusts of engines of different sizes and models. Thus, the engine thrust platform measuring device 12 can detect the thrusts of engines of different sizes and models, thereby improving the applicability of the engine thrust platform measuring device 12.

[0079] Specifically, in this embodiment, the lifting drive member 121 can be a lifting drive motor 1331, a hydraulic lift, etc. By sending a control signal to the lifting drive member 121 through the control system, the lifting drive member 121 can rise or fall.

[0080] For engines of different sizes and models, a force measuring component 122 corresponding to the engine model can also be selected and connected to the first mounting plate 123 and the second mounting plate 124. When it is necessary to detect other models of engines, the force measuring component 122 is disassembled from between the first mounting plate 123 and the second mounting plate 124, and a new set of corresponding force measuring components 13 can be replaced. By detachably connecting the force measuring component 122 to the first mounting plate 123 and the second mounting plate 124 respectively, the corresponding force measuring component 122 can be selected according to the size of the engine model to detect the thrust of the engine, thereby improving the applicability of the force measuring device 12 of the engine thrust stand.

[0081] Optionally, in an example, the force measuring assembly 125 includes:

[0082] A first mounting seat 1251, which is detachably connected to the first mounting plate 123;

[0083] A second mounting seat 1252, which is detachably connected to the second mounting plate 124;

[0084] A force measuring sensor 1253, with both ends of the force measuring sensor 1253 connected to the first mounting seat 1251 and the second mounting seat 1252 respectively.

[0085] By connecting both ends of the force measuring sensor 1253 to the first mounting seat 1251 and the second mounting seat 1252 respectively, and mounting the first mounting seat 1251 on the first mounting plate 123 and the second mounting seat 1252 on the second mounting plate 124. The first mounting plate 124 is connected to the engine bracket 11, and the second mounting plate 124 is connected to the engine thrust stand locking device 13. When the engine is undergoing a thrust test, a relative displacement will occur between the first mounting plate 123 and the second mounting plate 124, which will in turn cause a relative position between the first mounting seat 1251 and the second mounting seat 1252. As a result, the force measuring sensor 1253 can measure the force used to generate the displacement between the first mounting seat 1251 and the second mounting seat 1252 according to the relative displacement between the first mounting seat 1251 and the second mounting seat 1252, that is, the engine thrust.

[0086] Specifically, the force measuring sensor 1253 can adopt a temperature-controlled force measuring instrument. The sensor is completely isolated from the outside through an asbestos net and has a concealed wire outlet, with separate control of temperature and data. The temperature is maintained at a constant 41°C (preheating for 3 to 4 hours). The working temperature of the sensor is isolated from the outside environmental temperature, which improves the accuracy of the sensor and is more conducive to protecting the sensor, with a temperature error of ±1°C. The sensor can work in an environmental temperature range of 220K to 400K.

[0087] Optionally, in one example, the force measuring assembly 125 further includes:

[0088] A first flexible transmission member, with both ends of the first flexible transmission member connected to the first mounting seat 1251 and the force measuring sensor 1253 respectively. The first thrust sensor is paired with the first flexible transmission member. By connecting both ends of the first flexible transmission member to the first mounting seat 1251 and the force measuring sensor 1253 respectively, flexible connection can be achieved to eliminate the influence of lateral force on measurement. The force measuring sensor 1253 can meet the tensile / compressive measurement requirements; a digital sensor is adopted, with built-in force value and temperature control modules. Without a secondary instrument, data can directly enter the system through the RS485 serial port; a digital sensor refers to a sensor that converts a traditional analog sensor by adding or modifying an A / D conversion module to make its output signal a digital quantity (or digital code), mainly including: an amplifier, an A / D converter, a microprocessor (CPU), a memory, a communication interface, a temperature test circuit, etc.

[0089] Optionally, in one example, the calibration assembly 126 includes:

[0090] A third mounting seat 1261, detachably connected to the first mounting plate 123;

[0091] A fourth mounting seat 1262, detachably connected to the second mounting plate 124;

[0092] A calibration sensor 1263, with both ends of the calibration sensor 1263 connected to the third mounting seat 1261 and the fourth mounting seat 1262 respectively;

[0093] A hydraulic cylinder 1264, connected to one end of the third mounting seat 1261 away from the calibration sensor 1263.

[0094] By setting the calibration sensor 1263 and the hydraulic cylinder 1264, and enabling the calibration sensor 1263 to be connected to the first mounting plate 123 through the third mounting seat 1261, and connected to the second mounting plate 124 through the fourth mounting seat 1262, so that the engine can be connected to the second mounting plate 124 through the engine mount 11, and the first mounting plate 123 can be fixedly locked with the engine thrust stand locking device 13. Based on this, when the engine conducts a thrust test, the thrust of the engine will act on the calibration sensor 1263 through the engine mount 11 and the second mounting plate 124. Then, the hydraulic cylinder 1264 is used to provide a reaction force to the calibration sensor 1263 through the third mounting seat 1261 to balance the engine thrust. Furthermore, the balance effect of the engine thrust and the reaction force can be observed through the calibration sensor 1263, thus facilitating the improvement of the accuracy of subsequent engine thrust measurement.

[0095] The calibration component 126 works in two ways: one is the full-automatic working mode, that is, the control device automatically controls the oil cylinder to realize the full-automatic working mode of applying calibration load, data acquisition, processing and printing, and the output format of data processing is modified according to the requirements of users; the other is the semi-automatic working mode (the so-called manual mode), that is, the force value calibration point is set through the control device, and the test is started. After loading to the set calibration force value point, manual intervention is required to carry out the test at the next set point (that is, after the software controls the calibration force measuring system to load or unload to a certain set calibration force value, the force value remains unchanged until the operator believes that the next force value calibration point can be carried out, and then clicks the corresponding operation button on the operation control device with the left mouse button, and then the calibration of the next force value calibration point can be carried out, otherwise the force value remains at the current set calibration force value).

[0096] It should be noted that the holding time of the calibration load force value can be set arbitrarily according to actual needs; the magnitude of the calibration force value can be set arbitrarily according to actual needs.

[0097] The hydraulic cylinder 1264 drives the piston of the small oil cylinder (control oil cylinder) to reciprocate linearly through the mechanical transmission system, and then makes the piston of the large oil cylinder (loading oil cylinder) reciprocate linearly, so as to realize the loading / unloading of the calibration sensor 1263.

[0098] Furthermore, the measurement accuracy of the calibration sensor 1263 is greater than that of the force measuring sensor 1253, so as to better balance the acting force and the reaction force. The calibration sensor 1263 can be a tension and compression bidirectional thrust sensor. The tension and compression bidirectional thrust sensor is placed on the engine thrust platform locking device 13 and the engine bracket 11 through the third mounting seat 1261 and the fourth mounting seat 1262, and its accuracy is 0.1 level. The force measuring component 125 needs to be used frequently and is not suitable for disassembly. Therefore, it is necessary to use the calibration sensor 1263 (system accuracy 0.1 level) to calibrate the force measuring component 125. During calibration, the calibration sensor 1263 is pushed by the portable hydraulic cylinder 1264, and this data is compared with the measured working measuring instrument to achieve the purpose of calibration. The sensor uses a digital sensor, with built-in force value and temperature control modules, without a secondary instrument, and directly enters the system through the RS485 serial port with the data.

[0099] Optionally, in an example, the calibration component 126 further includes:

[0100] A second flexible transmission member, and both ends of the second flexible transmission member are respectively connected to the third mounting seat 1261 and the calibration sensor 1263.

[0101] The structures and effects of the second flexible transmission member and the first flexible transmission member are similar, and will not be elaborated here.

[0102] Optionally, in an example, the engine thrust platform force measuring device 12 further includes:

[0103] The spring piece 127 is located on one side of the first mounting plate 123 and the second mounting plate 124 along the thrust direction, and both ends of the spring piece 127 are respectively connected to the first mounting plate 123 and the second mounting plate 124.

[0104] As an elastic micro-motion guiding mechanism, the spring piece 127 is mainly used for the measurement of force, pressure, strain, etc. The spring piece 127 has many advantages such as simple structure, no guiding clearance, no deviation displacement, sensitive reaction, high guiding accuracy, no creep, etc., and is easy to process and assemble. The spring piece 127 is a key component of the force measuring bench. In this example, the material of the spring piece 127 is 60Si2MnA and it is a forging. Its ultimate tensile strength = 1570 MPa. High requirements are imposed on the dimensional accuracy and surface roughness. The thickness difference between the two working sections and the non-working section is large, and the machining deformation is large. Therefore, reasonable machining processes and methods need to be selected. It should be noted that all the spring pieces 127 in this example are required to have the same elastic coefficient after machining. The processed materials should be selected from the same batch and need to be inspected and verified after machining.

[0105] Thus, by setting the spring piece 127 to be respectively connected to the first mounting plate 123 and the second mounting plate 124, it can sensitively respond to the displacement between the first mounting plate 123 and the second mounting plate 124 caused by the externally applied force or pressure (engine thrust), and convert it into the deformation of the spring, so as to realize the accurate measurement of the externally applied force or pressure (engine thrust).

[0106] Preferably, the spring piece 127 is arranged on one side of the first mounting plate 123 and the second mounting plate 124 along the thrust generated by the engine. Thus, the thrust generated by the engine can be better converted into the deformation of the spring, so as to realize more accurate measurement of the externally applied force or pressure (engine thrust).

[0107] Optionally, in one example, the engine thrust bench force measuring device 12 further includes:

[0108] The support frame 128, the support frame 128 includes: a support rod and a support plate. The number of support plates is two. The two support plates are respectively connected to both ends of the support rod. One support plate is connected to the first mounting plate 123, and the other support plate is connected to the second mounting plate 124.

[0109] By setting the support frame 128, using the support plates of the support frame 128 to be respectively connected to the first mounting plate 123 and the second mounting plate 124, the support frame 128 is used to fix the first mounting plate 123 and the second mounting plate 124, and prevent the engine and the engine thrust bench force measuring device 12 from being unsafe when the spring piece 127 fails.

[0110] Meanwhile, the support plate can expand the contact area with the first mounting plate 123 and the second mounting plate 124, thereby improving the mounting stability and further enhancing the safety of the engine and the engine thrust stand force measuring device 12.

[0111] Optionally, in an example, the force measuring component 122 includes a first force measuring component 122. The first force measuring component 122 includes a force measuring assembly 125 and a calibration assembly 126. The force measuring assembly 125 and the calibration assembly 126 are in the same vertical plane as the axis of the engine, and this horizontal plane is parallel to the axis of the engine. Moreover, the axis directions of both the force measuring assembly 125 and the calibration assembly 126 are arranged parallel to the axial direction of the engine. The force measuring assembly 125 and a calibration assembly 126 are on the same horizontal plane.

[0112] The small engine has a small volume, and is relatively short both axially and longitudinally. Since the engine is small, the engine thrust generated by it is also small. The thrust of the small engine can be approximated to be along the axis direction of the engine. In order to be able to detect the thrust of the small-sized engine, by placing the force measuring assembly 125 and the calibration assembly 126 of the first force measuring component 122 in the same vertical plane of the axis of the engine, the accuracy and stability of the thrust measurement of the small-sized engine can be improved.

[0113] The force measuring sensor 1253 and the calibration sensor 1263 are in the same horizontal plane and parallel to the engine axis, ensuring that the measured value of the force measuring sensor 1253 can truly reflect the actual thrust of the engine.

[0114] Optionally, in an example, the force measuring component 122 further includes a second force measuring component 122. The second force measuring assembly 125 includes two force measuring assemblies 125 and a calibration assembly 126. The calibration assembly 126 is in the same vertical plane as the axis of the engine. The two force measuring assemblies 125 are respectively arranged on both sides of the calibration assembly 126. Moreover, the two force measuring assemblies 125 and the calibration assembly 126 are all on the same horizontal plane and this horizontal plane is parallel to the axis of the engine. The distance between each force measuring assembly 125 and the calibration assembly 126 is equal, and the axis directions of both the force measuring assembly 125 and the calibration assembly 126 are arranged parallel to the axis direction of the engine.

[0115] For an engine with a long axial distance and a short longitudinal distance, the engine thrust is a multi-dimensional vector, including multiple components such as the main thrust and the lateral force. For an engine with a relatively long axis, the moment effect generated by the thrust may be more significant. If only the arrangement of the force measuring components 125 and the calibration components 126 in the first force measuring component 122 is adopted, it may not be possible to accurately capture the components of the thrust in all directions, resulting in measurement errors. For an engine with a long axis and a short longitudinal distance, in order to accurately measure its thrust, two force measuring components 125 need to be arranged on both sides of the engine axis respectively; and since the longitudinal distance of this kind of engine is short, the longitudinal error is not large, so the force measuring component 125 can still be set in the same vertical plane as the engine axis. In order to further improve the accuracy of the two force measuring components 125 and the calibration components 126, the three of them also need to be set in the same plane, and the axis directions of the three are also set to be consistent with the axis direction of the engine.

[0116] Optionally, in one example, the force measuring component 122 further includes a third force measuring component 122. The third force measuring component 122 includes two force measuring components 125 and two calibration components 126. One force measuring component 125 and one calibration component 126 are coaxially connected to form a force measuring group. The axis direction of the force measuring group is arranged parallel to the axis direction of the engine. The two force measuring groups are respectively arranged on both sides of the vertical plane of the engine axis, and the distance from each force measuring group to the vertical plane is equal. The two force measuring groups are both located in the same horizontal plane and this horizontal plane is parallel to the axis of the engine.

[0117] For an engine with both long axial and longitudinal distances, the thrust of a large engine is usually very large, and due to the large size of the engine, the thrust may be unevenly distributed axially. Traditional single-point measurement or simple structures may not be able to accurately capture the thrust distribution of the entire large engine, resulting in measurement errors. By setting two force measuring groups, the thrust on both sides of the axis of the large engine can be measured separately. This design helps to capture the uneven axial distribution of the thrust of the large engine and improve the measurement accuracy. One force measuring component 125 and one calibration component 126 are coaxially connected to form a force measuring group. This structure can ensure the consistency and accuracy of the measurement, and reduce errors caused by relative movement or deformation between components. The axis direction of the force measuring group is arranged parallel to the axis direction of the engine. This setting can ensure that the force measuring component 125 directly measures the thrust generated by the engine, rather than forces or moments in other directions. The two force measuring groups are respectively arranged on both sides of the vertical plane of the engine axis, and the distance from each force measuring group to the vertical plane is equal. This symmetric layout can further reduce measurement errors caused by the asymmetry of the engine structure or external interference.

[0118] It should be noted that in this embodiment, engines of various different models can be distinguished by different sizes.

[0119] In the above-mentioned Embodiment 2, it includes each structure in the above-mentioned Embodiment 1, can achieve each process in the above-mentioned Embodiment 1, and can achieve the same technical effects. To avoid repetition, it will not be elaborated here.

[0120] Embodiment 3:

[0121] The engine thrust stand locking device 13 includes:

[0122] A base 131,

[0123] A slide rail 132, and the slide rail 132 is installed on the base 131 in parallel;

[0124] A drive assembly 133, the drive assembly 133 is installed on the base 131, and the drive assembly 133 is connected to the engine thrust stand force measuring device 12 for driving the engine thrust stand force measuring device 12 to move along the slide rail 132;

[0125] A sliding positioning assembly 134, the sliding positioning assembly 134 is connected to the engine thrust stand force measuring device 12 and is slidably connected to the slide rail 132 for fixing the engine thrust stand force measuring device 12 on the slide rail 132.

[0126] By arranging the slide rail 132 and installing the slide rail 132 on the base 131, the engine thrust stand force measuring device 12 is connected to the drive assembly 133 and the sliding positioning assembly 134. The drive assembly 133 provides a driving force for the engine thrust stand force measuring device 12. Under the action of the driving force, the engine thrust stand force measuring device 12 slides on the slide rail 132 through the sliding positioning assembly 134. The control device can send a fixing signal to the sliding positioning assembly 134 and send a stop driving signal to the drive assembly 133. After receiving the stop driving signal, the drive assembly 133 stops driving the engine thrust stand force measuring device 12 to move. And after the sliding positioning assembly 134 receives the fixing signal, the sliding positioning assembly 134 is fixed on the slide rail 132, so that the engine thrust stand force measuring device 12 can be fixed. Thus, the engine thrust stand force measuring device 12 can freely adjust the driving distance through the drive assembly 133 and can be fixed on the slide rail 132 at any time by the sliding positioning assembly 134, so as to be fixed when testing the engine thrust.

[0127] Optionally, in one example, the driving assembly 133 may include: a driving motor 1331; a screw rod 1332, the screw rod 1332 is connected to the output shaft of the driving motor 1331; a screw nut 1333, the screw nut 1333 is connected to the screw rod 1332, the screw nut 1333 is connected to the engine thrust platform force measuring device 12, and the output shaft of the driving motor 1331 rotates so that the screw nut 1333 drives the engine thrust platform force measuring device 12 to move along the length direction of the slide rail 132.

[0128] After receiving the driving signal, the output shaft of the driving motor 1331 starts to rotate, thereby driving the screw rod 1332 to rotate. When the screw rod 1332 rotates, it also drives the screw nut 1333 to rotate. The screw nut 1333 can make the nut move along the axial direction of the screw rod through the rotation of the screw rod, thereby realizing the conversion of force and movement direction. Therefore, when the screw nut 1333 rotates, it can drive the engine thrust platform force measuring device 12 to move along the axial direction of the screw rod 1332. The engine thrust platform force measuring device 12 is slidably connected to the slide rail 132 through the sliding positioning assembly 134. Therefore, the screw nut 1333 can also drive the engine thrust platform force measuring device 12 to move along the length direction of the slide rail 132.

[0129] The driving motor 1331 is a servo motor. The absolute encoder of the servo motor determines the current position and uploads the current position data through Profinet communication. At the same time, in order to prevent equipment damage caused by the loss of encoder position, the driving component 133 can also be provided with two limit switches connected to the servo motor, so as to protect the engine thrust platform locking device 13 and determine the origin position.

[0130] Optionally, in one example, the driving assembly 133 may further include: a reducer, wherein an input end of the reducer is connected to an output shaft of the driving motor 1331 , and an output end of the reducer is connected to the screw rod 1332 .

[0131] Usually, since the drive motor 1331 will generate a relatively high rotation speed after receiving the drive signal, the engine thrust platform force measuring device 12 also has a fast displacement rate. However, if the displacement rate of the engine thrust platform force measuring device 12 is too fast, it will be difficult to fix the engine thrust platform force measuring device 12, and the fixing accuracy is relatively difficult. Therefore, a reducer needs to be set, and the input end of the reducer is connected to the output shaft of the drive motor 1331, and the output end of the reducer is connected to the screw rod 1332, so that the screw rod 1332 and the drive motor 1331 are not directly connected, and the rotation speed of the output shaft of the drive motor 1331 is reduced by the reducer before being output to the screw rod 1332.

[0132] Optionally, in one example, the driving assembly 133 may further include: a shaft connector, one end of which is connected to the output end of the reducer, and the other end of which is connected to the screw rod 1332. By providing the shaft connector, the reducer and the screw rod 1332 can be effectively connected, and at the same time, the vibration between the reducer and the screw rod 1332 can be reduced, thereby improving the transmission efficiency between the reducer and the screw rod 1332.

[0133] Optionally, in one example, the driving assembly 133 may further include: a bearing seat, the bearing seat is mounted on the base 131, and the screw rod 1332 passes through the bearing seat and is rotatably connected to the bearing seat. The bearing seat is provided, and the screw rod 1332 is supported by the bearing seat, so that the bearing seat can bear the axial and radial loads of the screw rod 1332, and support the rotation of the screw rod 1332, thereby reducing the vibration of the screw rod 1332 due to its excessive length.

[0134] Optionally, in one example, the slide rail 132 is a linear slide rail 132 , and the screw rod 1332 and the slide rail 132 are arranged in parallel.

[0135] By setting the slide rail 132 as a linear slide rail 132 and making the screw rod 1332 parallel to the slide rail 132, when the screw rod 1332 rotates to make the screw nut 1333 drive the engine thrust platform force measuring device 12 to move along the length direction of the screw rod 1332, the engine thrust platform force measuring device 12 can also move more smoothly on the slide rail 132 through the sliding positioning assembly 134, thereby reducing the possibility of shaking of the engine thrust platform force measuring device 12 when sliding on the slide rail 132, which is beneficial to improving the sliding stability of the engine thrust platform force measuring device 12.

[0136] Optionally, in one example, the sliding positioning assembly 134 may include:

[0137] The positioning block 1341 is fixedly connected to the engine thrust platform force measuring device 12, and the positioning block 1341 is used to be fixedly connected to the slide rail 132 according to the positioning signal.

[0138] After receiving the positioning signal, the positioning block 1341 can clamp the slide rail 132 to achieve fixation with the slide rail 132, and the positioning block 1341 is fixedly connected to the engine thrust platform force measuring device 12. Therefore, by clamping the slide rail 132 with the positioning block 1341, the engine thrust platform force measuring device 12 can be kept stationary, thereby achieving positioning of the engine thrust platform force measuring device 12.

[0139] Further, a positioning signal can be sent to the positioning block 1341 through a hydraulic device, and the positioning block 1341 is controlled hydraulically to clamp or loosen the slide rail 132. Specifically, the driving motor 1331 drives the hydraulic device to generate pressure and stores it through an accumulator, and the output to the positioning block 1341 is controlled by a brake solenoid valve, so that the positioning block 1341 unlocks and locks the bench. A pressure sensor is used to monitor the pressure of the accumulator to control the start and stop of the driving motor 1331, so that the driving motor 1331 stops driving when the positioning block 1341 clamps the slide rail 132, or the driving motor 1331 also drives simultaneously when the positioning block 1341 loosens the slide rail 132. Thus, the position adjustment and locking function of the engine thrust bench locking device 13 is completed jointly by the positioning block 1341 and the driving motor 1331.

[0140] Optionally, in an example, the sliding positioning assembly 134 further includes:

[0141] A sliding block, one end of the sliding block is fixedly connected to the engine thrust bench force measuring device 12, and the other end of the sliding block is slidably connected to the slide rail 132.

[0142] One end of the sliding block is fixedly connected to the engine thrust bench force measuring device 12, and the other end is slidably connected to the slide rail 132, so that the sliding block can slide freely on the slide rail 132, and then drive the engine thrust bench force measuring device 12 to move on the slide rail 132.

[0143] Preferably, the sliding block can be a pulley matching the slide rail 132.

[0144] Optionally, in an example, the number of slide rails 132 is two, and the two slide rails 132 are arranged in parallel; the number of slide rails 132 corresponds to the number of sliding positioning assemblies 134.

[0145] By arranging two slide rails 132 in parallel, the sliding of the sliding block on the slide rail 132 can be more stable, thus effectively ensuring the stability of the engine thrust bench force measuring device 12 during sliding. Further, the number of slide rails 132 corresponds to the number of sliding positioning assemblies 134, whereby it can be ensured that there is a sliding positioning assembly 134 on each slide rail 132 to achieve sliding and positioning, that is, ensuring the stability of sliding and the effectiveness of positioning.

[0146] More specifically, in each set of sliding positioning components 134, the number of sliding blocks and positioning blocks 1341 can be multiple. In this embodiment, the number of slide rails 132 is two, and the number of sliding positioning components 134 is two groups. Each group of sliding positioning components 134 includes one positioning block 1341 and two sliding blocks. In other embodiments, the number of slide rails 132 and sliding positioning components 134, and the number of sliding blocks and positioning blocks 1341 in each sliding positioning component 134 can be adjusted according to actual situations. Therefore, the present invention does not specifically limit the number of slide rails 132, sliding positioning components 134, sliding blocks, and positioning blocks 1341.

[0147] In the above-mentioned Embodiment 3, it includes each structure in the above-mentioned Embodiment 1 and / or 2, and can achieve each process in the above-mentioned Embodiment 1 / or 2, and can achieve the same technical effect. To avoid repetition, it will not be described in detail here.

[0148] As described above, only the specific embodiments of the present invention are provided. Those skilled in the art can clearly understand that for the convenience and conciseness of description, the specific working processes of the above-described systems, modules, and units can refer to the corresponding processes in the foregoing method embodiments, which will not be described in detail here. It should be understood that the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present invention.

Claims

1. An engine thrust measuring device, characterized in that, The device includes: An engine mount for supporting the engine; An engine thrust platform locking device, which includes a slide rail and a sliding positioning component, and the length direction of the slide rail is consistent with the thrust direction of the engine; An engine thrust platform force measuring device, which includes a plurality of force measuring components. The upper side of the force measuring component is connected to the engine mount, and the lower side of the force measuring component is slidably connected to the slide rail. The sliding positioning component is used to lock with the slide rail so that the engine thrust platform locking device is in a static state, and the force measuring component corresponds to the model of the engine.

2. The engine thrust measuring device according to claim 1, characterized in that, The engine thrust force measuring equipment includes: A control device, which is respectively connected to the engine thrust platform force measuring device and the engine thrust platform locking device; The control device is used to determine the model information of the engine according to the size information of the engine, and drive the force measuring component corresponding to the model information to be connected to the engine mount according to the corresponding relationship between the preset model information and the preset force measuring component; The control device is also used to control the engine thrust platform locking device so that the engine thrust platform locking device drives the engine thrust platform force measuring device to move along the axis direction of the engine.

3. The engine thrust measuring device according to claim 1, characterized in that, The engine thrust platform force measuring device includes: A first mounting plate, and one end of each force measuring component is connected to the first mounting plate, and the first mounting plate is connected to the engine thrust platform locking device; A second mounting plate, and the other end of each force measuring component is connected to the second mounting plate, and the second mounting plate is connected to the engine mount; The force measuring components all include a force measuring component and a calibration component. The force measuring component and the calibration component are arranged between the first mounting plate and the second mounting plate, and the force measuring component and the calibration component are respectively connected to the first mounting plate and the second mounting plate.

4. The engine thrust measuring device according to claim 3, characterized in that, The force measuring component includes: A first mounting seat, which is detachably connected to the first mounting plate; A second mounting seat, which is detachably connected to the second mounting plate; A force measuring sensor, and both ends of the force measuring sensor are respectively connected to the first mounting seat and the second mounting seat.

5. The device according to claim 3, characterized in that, The calibration component includes: A third mounting seat, which is detachably connected to the first mounting plate; A fourth mounting seat, which is detachably connected to the second mounting plate; A calibration sensor, and both ends of the calibration sensor are respectively connected to the third mounting seat and the fourth mounting seat; A hydraulic cylinder, which is connected to one end of the third mounting seat away from the calibration sensor.

6. The engine thrust measuring device according to claim 3, characterized in that, The engine thrust platform force measuring device also includes: A spring plate, which is located on one side of the first mounting plate and the second mounting plate along the thrust direction, and both ends of the spring plate are respectively connected to the first mounting plate and the second mounting plate.

7. The engine thrust measuring device according to claim 6, characterized in that, The engine thrust platform force measuring device also includes: Support frame, the support frame includes: a support rod and a support plate, the number of the support plates is two, the two support plates are respectively connected to two ends of the support rod, one support plate is connected to the first mounting plate, and the other support plate is connected to the second mounting plate.

8. The engine thrust measuring device according to claim 1, wherein, The engine thrust platform locking device includes: A base, on which the slide rail is installed; A driving component, the driving component is installed on the base, and the driving component is connected to the engine thrust platform measuring device for driving the engine thrust platform measuring device to move along the slide rail.

9. The engine thrust measuring device according to claim 8, characterized in that, The driving component includes: A driving motor; A lead screw, the lead screw is connected to the output shaft of the driving motor; A lead screw nut, the lead screw nut is connected to the lead screw, the lead screw nut is connected to the engine thrust platform measuring device, and the output shaft of the driving motor rotates to make the lead screw nut drive the engine thrust platform measuring device to move along the length direction of the slide rail.

10. The engine thrust measuring device according to claim 8, characterized in that, The sliding positioning component includes: A positioning block, the positioning block is fixedly connected to the engine thrust platform measuring device, and the positioning block is used to be fixedly connected to the slide rail according to a positioning signal.

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