Simulation load testing device for gas steering engine

Abstract

The utility model discloses a gas steering engine simulation load testing device which comprises a base, a gas steering engine fixing frame, an encoder, a gas steering engine, a coupler, a support, a corner connector, a torque sensor and a spring piece simulation load. The encoder is connected to the gas steering engine fixing base through a screw, the gas steering engine is connected to the rotating shaft through a screw, the rotating shaft is connected to the main shaft through a coupler, the main shaft is connected to the torque sensor through a coupler, the torque sensor is connected to the spring piece simulation load through a coupler, and the spring piece simulation load is connected to the support through the expansion coupling sleeve. The torque sensor is connected to the corner connector through a screw, and the corner connector is connected to the base through a bolt. According to the utility model, the spring piece is used as a simulation load, and the rotation angle and the torque are read in real time through the encoder and the torque sensor, thereby obtaining the torque data of the gas steering engine. By changing the length of the spring piece and adjusting the simulation load, the torque data of the gas steering engine can be measured quickly, simply and conveniently.

Description

Technical Field

[0001] This application relates to the field of gas-powered servo motor testing technology, and in particular to a gas-powered servo motor simulated load testing device. Background Technology

[0002] Gas servo motors are mechanisms that operate within the exhaust gas flow of a rocket. After the rocket engine exhaust is ignited, the gas servo motor deflects the gas flow to provide turning torque for the rocket. As a special wing in the rocket jet, the gas servo motor plays an important role in the thrust vector control of rockets and missiles.

[0003] Most domestically developed thrust vectoring engine gas rudder testing systems directly test the performance of the gas rudder during the thrust vectoring engine ignition experiment. Because the gas load generated during the ignition experiment varies with the gas flow rate, the test data fluctuates significantly and is not accurate enough. The ignition experiment generates a large amount of heat, requiring thermal protection for the testing equipment, which can easily cause ablation. Furthermore, excessive transmission mechanisms can increase test data errors, hindering data extraction. The equipment is bulky and complex, has low automation, long testing time, low precision, inconvenient operation, and high experimental costs. Therefore, there is an urgent need for a testing solution that is simple to operate and uses lightweight equipment. Summary of the Invention

[0004] This application provides a gas servo motor simulated load testing device, which can be used to solve the technical problems of unstable gas flow, high temperature affecting test accuracy, and repetitive testing during ignition testing.

[0005] This application provides a gas servo motor simulated load testing device, which includes an encoder, a gas servo motor, a gas servo motor mounting bracket, a rotating shaft, a first coupling, a first support, a main shaft, a second support, a second coupling, an angle code, a torque sensor, a third coupling, a spring plate simulating the load, a third support, a tensioning connecting sleeve, and a base;

[0006] An encoder and a gas-powered servo motor are installed at one end of the base; the gas-powered servo motor is mounted on a gas-powered servo motor mounting bracket; the main shaft is located at the central axis of the base; from one end to the other at the central axis, the following components are sequentially installed: a rotating shaft, a first coupling, a first support, the main shaft, a second support, a second coupling, a torque sensor, a third coupling, a spring plate simulating the load, and a third support;

[0007] The encoder and the gas servo motor mounting bracket are connected by screws. The rotating shaft and the swing block are connected by a threaded hole on the radial side of the rotating shaft. When the gas servo motor is running, the swing block reciprocates around the rotating shaft. The rotating shaft and the main shaft are connected by a first coupling. The main shaft and the torque sensor are connected by a second coupling. The torque sensor and the spring plate simulated load are connected by a third coupling. The spring plate simulated load and the third support are connected by a shrink-fitting sleeve. The angle bracket is connected to the torque sensor through a threaded hole on the side of the torque sensor. All connections to the base are made by bolts.

[0008] Furthermore, the gas-powered servo motor includes an M1.6 screw, an end cap, a servo motor body, an actuator cylinder, a piston, and a base plate;

[0009] The gas-powered servo motor includes a pair of actuators, each of which is cylindrical with one end open and the other end having an air passage that matches the air passage on the base plate. The open ends of the two actuators are connected to form a sealed cylindrical space, in which a cylindrical piston moves. The servo motor body has a cylindrical through hole that matches the actuators. Both ends of the through hole are sealed with end caps, which are connected to the servo motor body by four M1.6 screws. Air holes are opened on both sides and the top of the base plate. The air holes on both sides are connected to the gas supply, and the air hole on the top matches the actuators.

[0010] The servo motor body has an opening at the top, and the piston has a slot for engaging with the protrusion on the main shaft.

[0011] Furthermore, the gas servo motor mounting bracket includes a bracket, a support plate, a first flange, a first M5 bolt, and a first M10 bolt; the gas servo motor mounting bracket has a symmetrical structure.

[0012] The gas-powered steering gear mounting bracket includes a pair of parallel brackets. Each bracket has a rectangular protrusion on the surface that contacts the base and is connected to the base groove. Each bracket is connected to the base by first M10 bolts at both ends. The support plate is connected to the two brackets by four first M10 bolts. The support plate has a circular hole in the center and is connected to the first flange by four first M5 bolts.

[0013] Furthermore, the first support, the second support, and the third support each include a support plate, a second flange, a second M10 bolt, and a second M5 bolt;

[0014] The first and second supports have the same structure and also include a deep groove ball bearing; the other components of the third support are the same as those of the first support, and the third support also includes a shrink-fit coupling sleeve.

[0015] The first and second supports have identical structures.

[0016] Each support plate has a rectangular protrusion on its contact surface with the base, which connects to the base groove. The support plate is connected to the base by two second M10 bolts. The support plate has a round hole for installing the second flange, which is connected by four second M5 bolts. The second flange has a stepped hole in the center for installing a deep groove ball bearing or a shrink fitting.

[0017] Furthermore, the spring plate simulating the load includes a front clamp, a rear clamp, a spring plate, and connecting screws;

[0018] Both the front and rear clamps are semi-cylindrical. The front clamp has a flat section on the cylindrical surface near the front and rear ends, with two threaded holes. The rear clamp has a keyway on its cylindrical surface and two threaded holes on its flat surface corresponding to those on the front clamp. The two clamps are connected by four connecting screws. The spring plate simulates the load and includes two spring plates made of beryllium bronze. Each spring plate has a rectangular cross-section. The front and rear clamps have rectangular grooves according to the cross-sectional shape of the spring plates. Both ends of the spring plates are clamped by the front and rear clamps. The front end is connected to the third coupling, and the rear end is connected to the expansion coupling sleeve.

[0019] Furthermore, the length of the spring sheet is determined as follows:

[0020] The torsion of the spring sheet is a free torsion of a rectangular cross-section rod. The maximum shear stress occurs at the midpoint of the long side of the rectangle. The shear stress at each edge point forms a flow tangential to the boundary. The shear stress at the four corner points is zero. The maximum shear stress is determined by the following method:

[0021]

[0022] h is the longer side, b is the shorter side, G is the shear modulus of the material, α is the first coefficient related to h / b, and β is the second coefficient related to h / b. The values ​​are shown in Table 1.

[0023] Table 1

[0024]

[0025] The relative rotation angle between the two ends of the spring sheet is obtained according to the test requirements. Scope The following relationship exists between the length of the spring sheet and its operating length:

[0026]

[0027] Determine the reference value for the length of the spring sheet:

[0028]

[0029] The load can be changed by altering the size and length of the spring plate.

[0030] Furthermore, all supports and gas turbine mounts are axially movable on the base.

[0031] Furthermore, in operation, the input torque of the gas-powered servo motor causes the shaft to twist. The shaft, first coupling, main shaft, second coupling, torque sensor, and third coupling are a whole unit, with the other end subjected to a spring plate simulating a load. The torque is transmitted to the spring plate simulating a load via the torque sensor, causing the whole unit to twist. The encoder records the angle of the whole unit's twist, and the torque sensor records the torque acting on the whole unit. By adjusting the length of the spring plate simulating a load, the rotation angle is controlled within a preset measurement range. Then, the torque measured by the torque sensor is read out to obtain the maximum torque that the gas-powered servo motor can output.

[0032] Compared with the prior art, the significant features of this utility model are as follows:

[0033] (1) The servo motor under test is fixed to the gas servo motor mounting bracket by screws and connected to the shaft by a coupling. The servo motor mounting bracket is connected to the base plate and the servo motor by screws, which can be quickly disassembled and convenient for replacing the servo motor under test.

[0034] (2) The shaft is connected to the angle sensor to test the deflection angle of the servo shaft in real time;

[0035] (3) The torque sensor is connected to the main shaft via a coupling to detect the current torque value in real time;

[0036] (4) The base plate reliably connects the fixed brackets together with screw parts. Bearings are designed between each moving part and the fixed bracket to reduce working friction and increase the accuracy of test data.

[0037] (5) The simulated load of this test device is a double-overlapping beryllium bronze spring plate structure, which has the advantages of long-term elastic stability, good linearity of torque and deflection angle changes, and is not prone to deflection resonance. The required torque value can be obtained by replacing the spring plates of different sizes.

[0038] (6) This testing device uses compressed air instead of high-temperature gas, which avoids the problem of high temperature damaging the testing device and affecting the testing accuracy. At the same time, it can be tested repeatedly. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the overall structure of the gas-powered steering gear simulated load testing device of this utility model;

[0040] Figure 2 This is a schematic diagram of the gas-powered steering gear structure of this utility model;

[0041] Figure 3 This is a schematic diagram of the gas-powered steering gear mounting frame structure of this utility model;

[0042] Figure 4 This is a schematic diagram of the support structure of this utility model;

[0043] Figure 5 This is a schematic diagram of the spring sheet simulating a load structure of this utility model;

[0044] Explanation of reference numerals in the attached figures:

[0045] (1) Encoder, (2) Gas servo motor, (3) Gas servo motor mounting bracket, (4) Shaft, (5) First coupling, (6) First support, (7) Main shaft, (8) Second support, (9) Second coupling, (10) Angle bracket, (11) Torque sensor, (12) Third coupling, (13) Spring plate simulates load, (14) Third support, (15) Expansion coupling sleeve, (16) Base, (17) M1.6 screw, (18) End cap, (19) 9)-Steering gear body, (20)-Actuator cylinder, (21)-Piston, (22)-Base plate, (23)-Bracket, (24)-Support plate, (25)-First flange, (26)-First M5 bolt, (27)-First M10 bolt, (28)-Second M10 bolt, (29)-Support plate, (30)-Second flange, (31)-Deep groove ball bearing, (32)-Second M5 bolt, (33)-Screw, (34)-Front clamp, (35)-Rear clamp, (36)-Spring plate. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0047] The embodiments of this application will now be described in conjunction with the accompanying drawings.

[0048] This servo motor testing device uses an encoder and torque sensor in conjunction with a spring plate. The spring plate applies a load and the sensor collects data. It has the advantages of convenient operation, simple and reliable structure, and small size.

[0049] like Figure 1As shown, a gas servo motor simulated load testing device includes an encoder 1, a gas servo motor 2, a gas servo motor mounting bracket 3, a rotating shaft 4, a first coupling 5, a first support 6, a main shaft 7, a second support 8, a second coupling 9, an angle bracket 10, a torque sensor 11, a third coupling 12, a spring plate simulated load 13, a third support 14, a tensioning connecting sleeve 15, and a base 16. The encoder 1 and the gas servo motor 2 are mounted at one end of the base 16. The gas servo motor 2 is mounted on the gas servo motor mounting bracket 3. The main shaft 7 is located at the central axis of the base 16. From one end to the other, the following components are sequentially arranged along the central axis: rotating shaft 4, first coupling 5, first support 6, main shaft 7, second support 8, second coupling 9, torque sensor 11, third coupling 12, spring plate simulated load 13, and third support 14.

[0050] Encoder 1 is connected to the gas servo motor mounting bracket 3 via screws to read the rotation angle of the rotating shaft 4 in real time. The rotating shaft 4 is connected to the swing block via a threaded hole in the radial direction of the rotating shaft. When the gas servo motor 2 is running, the swing block reciprocates around the rotating shaft. The gas servo motor 2 is connected to the rotating shaft 4 via screws for quick replacement of the gas servo motor under test. The rotating shaft 4 is connected to the main shaft 7 via a first coupling 5. The main shaft 7 is connected to the torque sensor 11 via a second coupling 9. The torque sensor 11 is connected to the spring plate simulated load 13 via a third coupling 12 for reading the torque of the gas servo motor in real time. The spring plate simulated load 13 is connected to the third support 14 via a tightening coupling sleeve 15. All supports are bolted to the base 16.

[0051] The torque sensor 11 is connected to the corner bracket 10 through the threaded hole on the side of the torque sensor 11, and the corner bracket 10 is connected to the base 16 by bolts;

[0052] like Figure 2 As shown, the gas servo motor 2 includes an M1.6 screw 17, an end cap 18, a servo motor body 19, an actuator cylinder 20, a piston 21, and a base plate 22; the gas servo motor 2 has a symmetrical structure; the base plate 22 is located on the lower layer of the gas servo motor 2; the servo motor body 19 is located on the upper layer of the gas servo motor 2; end caps 18 are provided on both sides of the servo motor body 19;

[0053] The gas-powered servo motor 2 includes a pair of actuators 20, each of which is cylindrical with one end open and the other end having an air passage that matches the air passage on the base plate 22. The open ends of the two actuators 20 are connected to form a sealed cylindrical space. A cylindrical piston 21 moves within the sealed space. The servo motor body 19 has a cylindrical through hole that matches the actuators 20. Both ends of the through hole are sealed with end caps 18. The end caps 18 are connected to the servo motor body 19 by four M1.6 screws. Air holes are opened on both sides and the top of the base plate 22. The air holes on both sides are connected to the gas supply, and the air holes on the top match the actuators 20. The servo motor body 19 has an opening at the top, and the piston 21 has a slot for matching the protrusion on the main shaft.

[0054] Compressed gas enters through the air hole on the left side of the base plate 22, and piston 21 moves to the right, causing the rotating shaft 4 to rotate counterclockwise. Compressed air enters through the air hole on the right side of the base plate 22, and piston 21 moves to the left, causing the rotating shaft 4 to rotate clockwise.

[0055] like Figure 3 As shown, the gas servo motor mounting bracket 3 includes a bracket 23, a support plate 24, a flange 25, a first M5 bolt 26, and a first M10 bolt 27; the gas servo motor mounting bracket 3 has a symmetrical structure.

[0056] The gas servo motor mounting bracket 3 includes two parallel brackets 23. Each bracket 23 has a rectangular protrusion that mates with the groove of the base 16 for axial positioning. Each bracket 23 is connected to the base 16 by first M10 bolts 27 at both ends. The support plate 24 is connected to the two brackets 23 by four first M10 bolts 27. The support plate 24 has a circular hole in the center that mates with the flange 25. The flange 25 is connected to the support plate 24 by four first M5 bolts 26.

[0057] like Figure 4 As shown, the first support 6, the second support 8, and the third support 14 each include a support plate 29, a flange 30, a second M10 bolt 28, and an M5 bolt 32.

[0058] The first support 6 and the second support 8 have the same structure and also include a deep groove ball bearing 31; the other components of the third support 14 are the same as those of the first support 6, and the third support 14 also includes a shrink-fitting connecting sleeve 15.

[0059] The support plate 29 of any support also has a rectangular protrusion below it, which mates with the groove of the base 16 for axial positioning; the support plate 29 is connected to the base by two second M10 bolts 28, the support plate 29 has a round hole that mates with the flange 30, the flange 30 is connected to the support plate 29 by four second M5 bolts 32, and the flange 30 has a stepped hole in the center for installing a deep groove ball bearing 31 or a shrink coupling sleeve 15;

[0060] like Figure 5 As shown, the spring sheet simulating the load 13 includes a front clamp 34, a rear clamp 35, a spring sheet 36, and a screw 33;

[0061] Both the front clamp 34 and the rear clamp 35 are semi-cylindrical. The front clamp 34 has a flat section on its cylindrical surface near the front and rear ends, with two threaded holes. The rear clamp 35 has a keyway on its cylindrical surface and two threaded holes on its flat surface corresponding to those of the front clamp 34. The two clamps are connected by four screws 33. The spring plate simulates the load 13, which includes two spring plates 36 made of beryllium bronze. Each spring plate 36 has a rectangular cross-section, and its length is determined according to the test requirements. The front clamp 34 and the rear clamp 35 have rectangular grooves according to the cross-sectional shape of the spring plates 36. Both ends of the spring plates are clamped by the front clamp 34 and the rear clamp 35. The front end is connected to the third coupling 12, and the rear end is connected to the expansion coupling sleeve 15.

[0062] During operation, the input torque of the gas-powered servo motor 2 causes the rotating shaft 4 to tend to twist. The rotating shaft 4, the first coupling 5, the main shaft 7, the second coupling 9, the torque sensor 11, and the third coupling 12 form a whole. The other end is subjected to the action of the spring plate simulated load 13. The torque is transmitted to the spring plate simulated load 13 through the torque sensor 11, causing the whole to twist. The encoder 1 records the angle of the whole twist, and the torque sensor 11 records the torque acting on the whole. By adjusting the length of the spring plate simulated load 13, the rotation angle is controlled within a reasonable measurement range. Then, the torque measured by the torque sensor 11 is read to obtain the maximum torque that the gas-powered servo motor 2 can output.

[0063] The embodiments described above do not constitute a limitation on the scope of protection of this application.

Claims

1. A gas-powered steering gear simulated load testing device, characterized in that, The device includes an encoder (1), a gas servo motor (2), a gas servo motor mounting bracket (3), a rotating shaft (4), a first coupling (5), a first support (6), a main shaft (7), a second support (8), a second coupling (9), an angle code (10), a torque sensor (11), a third coupling (12), a spring plate simulating the load (13), a third support (14), a shrinking coupling sleeve (15), and a base (16); An encoder (1) and a gas servo motor (2) are installed at one end of the base (16); the gas servo motor (2) is installed on the gas servo motor mounting bracket (3); the main shaft (7) is installed at the central axis position of the base (16); from one end to the other end of the central axis position, the rotating shaft (4), the first coupling (5), the first support (6), the main shaft (7), the second support (8), the second coupling (9), the torque sensor (11), the third coupling (12), the spring plate simulates the load (13), and the third support (14) are installed in sequence; The encoder (1) is connected to the gas servo motor mounting bracket (3) by screws. The rotating shaft (4) is connected to the swing block through the threaded hole on the radial side of the rotating shaft. When the gas servo motor (2) is running, the swing block reciprocates around the rotating shaft. The rotating shaft (4) is connected to the main shaft (7) through the first coupling (5). The main shaft (7) is connected to the torque sensor (11) through the second coupling (9). The torque sensor (11) is connected to the spring plate simulated load (13) through the third coupling (12). The spring plate simulated load (13) is connected to the third support (14) through the expansion coupling sleeve (15). The angle bracket (10) is connected to the torque sensor (11) through the threaded hole on the side of the torque sensor (11). All connections to the base (16) are made by bolts. The gas-powered servo motor (2) includes an M1.6 screw (17), an end cap (18), a servo motor body (19), an actuator cylinder (20), a piston (21), and a base plate (22); The gas-powered servo motor (2) includes a pair of actuators (20), each actuator (20) is cylindrical with one end open and the other end having an air passage that matches the air passage on the base plate (22). The open ends of the two actuators (20) are connected to form a closed cylindrical space. The cylindrical piston (21) moves in the closed space. The servo motor body (19) has a cylindrical through hole that matches the actuator (20). The two ends of the through hole are sealed with end caps (18). The end caps (18) are connected to the servo motor body (19) by four M1.6 screws. The base plate (22) has air holes on both sides and the top. The air holes on both sides are connected to the gas supply, and the air hole on the top matches the actuator (20). The upper end of the servo motor body (19) has an opening, and the piston (21) has a slot for engaging with the protrusion on the main shaft.

2. The gas-powered steering gear simulated load testing device according to claim 1, characterized in that, The gas servo motor mounting bracket (3) includes a bracket (23), a support plate (24), a first flange (25), a first M5 bolt (26), and a first M10 bolt (27); the gas servo motor mounting bracket (3) has a symmetrical structure; The gas servo motor mounting bracket (3) includes a pair of parallel brackets (23). Each bracket (23) has a rectangular protrusion on the surface that contacts the base and is connected to the base (16) through a groove. Each bracket (23) is connected to the base (16) through two first M10 bolts (27). The support plate (24) is connected to the two brackets (23) through four first M10 bolts (27). The support plate (24) has a circular hole in the center and is connected to the first flange (25) through four first M5 bolts (26).

3. The gas-powered steering gear simulated load testing device according to claim 1, characterized in that, The first support (6), the second support (8), and the third support (14) each include a support plate (29), a second flange (30), a second M10 bolt (28), and a second M5 bolt (32); The first support (6) and the second support (8) have the same structure and also include a deep groove ball bearing (31); the third support (14) has the same components as the first support (6) and also includes a shrink-fitting connecting sleeve (15); The first support (6) and the second support (8) have the same structure; The support plate (29) of any support has a rectangular protrusion on the contact surface with the base, which is connected to the groove of the base (16). The support plate (29) is connected to the base (16) by two second M10 bolts (28). The support plate (29) has a round hole for installing the second flange (30), and is connected by four second M5 bolts (32). The second flange (30) has a stepped hole in the center for installing a deep groove ball bearing (31) or a shrink fitting (15).

4. The gas-powered steering gear simulated load testing device according to claim 1, characterized in that, The spring plate simulates the load (13), which includes a front clamp (34), a rear clamp (35), a spring plate (36), and a connecting screw (33). Both the front clamp (34) and the rear clamp (35) are semi-cylindrical. The front clamp (34) has a flat section on the cylindrical surface near the front and rear ends, with two threaded holes. The rear clamp (35) has a keyway on its cylindrical surface and two threaded holes on its flat surface corresponding to the front clamp (34). The two clamps are connected by four connecting screws (33). The spring plate simulates the load (13), which includes two spring plates (36) made of beryllium bronze. Each spring plate (36) has a rectangular cross section. The front clamp (34) and the rear clamp (35) have rectangular grooves according to the cross section shape of the spring plate (36). Both ends of the spring plate are clamped by the front clamp (34) and the rear clamp (35). The front end is connected to the third coupling (12), and the rear end is connected to the expansion coupling sleeve (15).

5. The gas-powered steering gear simulated load testing device according to claim 4, characterized in that, The length of the spring sheet (36) is determined as follows: The torsion of the spring sheet is a free torsion of a rectangular cross-section rod. The maximum shear stress occurs at the midpoint of the long side of the rectangle. The shear stress at each edge point forms a flow tangential to the boundary. The shear stress at the four corner points is zero. The maximum shear stress is determined by the following method: h is the long side, b is the short side, G is the shear modulus of the material, α is the first coefficient related to h / b, and β is the second coefficient related to h / b. The relationship is shown in Table 1 below. Table 1 The relative rotation angle between the two ends of the spring sheet is obtained according to the test requirements. Scope The following relationship exists between the length of the spring sheet and its operating length: Determine the reference value for the length of the spring sheet:

6. The gas-powered steering gear simulated load testing device according to claim 1, characterized in that, All supports and gas-powered steering gear mounts are axially movable on the base.

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