Characteristic testing device for lever-type amplifier

Abstract

The utility model relates to a characteristic testing device of a lever type amplifier, which comprises a lifting assembly, a rotary driving assembly, a static torque sensor, a push rod assembly and a base assembly, the rotary driving assembly, the static torque sensor and the push rod assembly are connected with the lifting assembly, and the output end of the rotary driving assembly is connected with one end of the static torque sensor. The rotation driving assembly is used for pushing the push rod assembly to rotate, and the lifting assembly is used for adjusting the heights of the rotation driving assembly, the static torque sensor and the push rod assembly. The base assembly is located under the push rod assembly, a positioning hole for installing an amplifier to be tested is formed in the base assembly, and an air hole is formed in the side face of the base assembly, connected with an air source and communicated with a cavity air inlet of the amplifier to be tested. According to the utility model, each detection item is automatically tested and process data is recorded, so that the detection precision and the test efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of production detection, in particular to a characteristic testing device of a lever-type amplifier. Background Art

[0002] The existing lever-type amplifier product development process requires testing of product characteristics, including the relationship between the balance chamber pressure and the lever torque, the relationship between the IP chamber pressure and the lever torque, the throttling characteristics of the upper and lower valve cores of the A / B chambers, etc. Currently, there is no suitable dedicated equipment on the market for automatic testing, and the manual testing process cannot accurately output torque and provide timely and accurate feedback on the rotation angle, making the operation process extremely inefficient. Summary of the invention

[0003] The utility model provides a characteristic testing device of a lever-type amplifier to solve the technical problems mentioned in the background technology.

[0004] The technical solution of the utility model is as follows: a characteristic test device of a lever-type amplifier, comprising: a lifting assembly, a rotation drive assembly, a static torque sensor, a push rod assembly and a base assembly, wherein the rotation drive assembly, the static torque sensor and the push rod assembly are connected to the lifting assembly, the output end of the rotation drive assembly is connected to one end of the static torque sensor, the other end of the static torque sensor is connected to the push rod assembly, the rotation drive assembly is used to drive the push rod assembly to rotate, and the lifting assembly is used to adjust the height of the rotation drive assembly, the static torque sensor and the push rod assembly;

[0005] The base assembly is located directly below the push rod assembly. The base assembly is provided with a positioning hole for installing the amplifier to be tested and an air hole is provided on the side thereof. The air hole is connected to an air source and communicates with the cavity air inlet of the amplifier to be tested.

[0006] Furthermore, the rotary drive assembly includes: a servo motor, a reducer and a drive mounting bracket, the output end of the servo motor is connected to the reducer, the reducer is mounted on the drive mounting bracket, and the drive mounting bracket is connected to the lifting assembly.

[0007] Furthermore, the drive mounting bracket is provided with a side reinforcement plate.

[0008] Furthermore, the lifting assembly includes a power module, a vertical bracket, a slide rail, a screw rod and a slider, the slide rail is installed along the length direction of the vertical bracket, the slider is slidably connected to the slide rail, the screw rod is threadedly connected to the slider, the screw rod is connected to the power module, and the power module is used to drive the screw rod to rotate.

[0009] Furthermore, the power module is a hand-cranked wheel or a motor.

[0010] Furthermore, a back reinforcement plate is provided on a side of the vertical bracket facing away from the slide rail.

[0011] Furthermore, the push rod assembly includes a bearing seat, a bearing seat mounting bracket, a rotating head and a push rod. The bearing seat is installed on the lifting assembly through the bearing seat mounting bracket. One end of the bearing seat is connected to the static torque sensor, and the other end is connected to the rotating head. The push rod is installed at the end of the rotating head away from the bearing seat, and a bearing is arranged in the bearing seat.

[0012] Furthermore, two ends of the static torque sensor are connected to the rotation drive assembly and the push rod assembly through couplings, respectively.

[0013] The beneficial effects of the utility model are as follows: the utility model uses a servo motor to achieve precise rotation control of the push rod, the push rod pushes the lever of the amplifier, and the rotation angle of the push rod corresponding to the angular displacement of the lever is obtained through the controller of the servo motor, and the torque of the lever is obtained by a static torque sensor. The utility model automatically tests each detection item and records the process data, which improves the detection accuracy and test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0015] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. The described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0016] In an embodiment of the present utility model, Figure 1 It is a structural schematic diagram provided according to the specific structure of a characteristic test device of a lever-type amplifier of the utility model, such as Figure 1 As shown, the utility model includes:

[0017] It includes: a lifting assembly, a rotation drive assembly, a static torque sensor 11, a push rod assembly and a base assembly 16, wherein the rotation drive assembly, the static torque sensor 11 and the push rod assembly are connected to the lifting assembly, the output end of the rotation drive assembly is connected to one end of the static torque sensor 11, and the other end of the static torque sensor 11 is connected to the push rod assembly, the rotation drive assembly is used to push the push rod assembly to rotate, and the lifting assembly is used to adjust the height of the rotation drive assembly, the static torque sensor 11 and the push rod assembly;

[0018] The base assembly 16 is located directly below the push rod assembly. The base assembly 16 includes an air circuit board, which is fixed to the base plate 2 by positioning pins and screws. The base assembly 16 is provided with positioning holes for installing the amplifier 15 to be tested and air holes on the side, which are specifically provided on the air circuit board. The air holes are connected to the air source and communicated with the cavity air inlet of the amplifier 15 to be tested. The amplifier 15 to be tested is positioned through the positioning holes and installed on the base assembly 16 by screws, and the rotating pin bracket is fixed to the base assembly 16 by screws. The air hole of the base assembly 16 is provided with an air pipe joint and the air pipe is connected to the system test air circuit.

[0019] The amplifier 15 to be tested is mounted on the positioning hole of the base assembly 16 so that the cavity air inlet of the amplifier 15 to be tested is connected with the gas channel in the base assembly 16 to achieve air filling in the cavity, thereby performing pressure and torque relationship tests and throttle valve throttling characteristic tests.

[0020] In one embodiment of the utility model, the lifting assembly includes a power module 17, a vertical bracket 1, a slide rail 21, a screw 19 and a slider 20. The vertical bracket 1 is fixed to the bottom plate 2 by screws. The slide rail 21 is installed along the length direction of the vertical bracket 1. The slider 20 is slidably connected to the slide rail 21. A back reinforcement plate 3 is provided on the side of the vertical bracket 1 away from the slide rail 21. The back reinforcement plate 3 is respectively fixed to the vertical bracket 1 and the bottom plate 2 by screws. The screw 19 is threadedly connected to the slider 20, and the screw 19 is connected to the power module 17. The power module 17 is used to drive the screw 19 to rotate. Among them, the power module 17 is a hand-cranked wheel or a motor.

[0021] In one embodiment of the utility model, the rotary drive assembly includes: a servo motor 7, a reducer 8 and a drive mounting bracket 5, the output end of the servo motor 7 is connected to the reducer 8, the reducer 8 is mounted on the drive mounting bracket 5, and the drive mounting bracket 5 is connected to the lifting assembly. The drive mounting bracket 5 is fixed to the bracket bottom plate 2 by screws, the side reinforcement plate 6 is fixed to the drive mounting bracket 5 by screws, and the drive mounting bracket 5 is fixed to the slider 20 of the lifting assembly. The servo motor 7 is mounted on the reducer 8 by screws, and the reducer 8 with the servo motor 7 installed is fixed to the drive mounting bracket 5 by screws, and the rigid coupling 10 is fixed to the rod end of the reducer 8 by screws.

[0022] In one embodiment of the utility model, the push rod assembly includes a bearing seat 9, a bearing seat mounting bracket 12, a rotating head 14 and a push rod 18. The bearing seat 9 is installed on the lifting assembly through the bearing seat mounting bracket 12. One end of the bearing seat 9 is connected to the static torque sensor 11, and the other end is connected to the rotating head 14. The push rod 18 is installed at the end of the rotating head 14 away from the bearing seat 9, and a bearing is arranged in the bearing seat 9.

[0023] The bearing seat 9 is fixed to the bearing seat mounting bracket 12 by screws. The bearing seat mounting bracket 12 is connected to the slider 20. The bearing seat mounting bracket is provided with a reinforcing plate 13. It should be noted that the bearing seat mounting bracket 12 can share a bracket base plate 4 with the drive mounting bracket 5.

[0024] The rod end of the rotating head 14 is installed into the lower end mounting hole of the rigid coupling 10 below through the bearing seat 9 and locked by screws. The push rod 18 is tightened into the mounting hole on the bottom surface of the rotating head 14 by threads.

[0025] The two ends of the static torque sensor 11 are connected to the rotary drive assembly and the push rod assembly through the coupling 10. The upper and lower rotating shafts of the static torque sensor 11 are respectively fixed to the lower mounting hole of the upper rigid coupling 10 and the upper mounting hole of the lower rigid bobbin through screws.

[0026] The testing process of the utility model is as follows:

[0027] 1. Test the relationship between the balance chamber pressure and the lever torque: Before starting, adjust the height of the slider 20 by hand-cranking the wheel, thereby adjusting the position of the push rod 18 and adjusting the push rod 18 to the balance chamber side. When the test starts, the balance chamber of the amplifier 15 to be tested is introduced with the specified air pressure, and the servo motor 7 is controlled to rotate clockwise through the pulse signal, driving the push rod 18 on the rotating head 14 to contact the lever on the balance chamber side of the amplifier 15 to be tested, thereby driving the lever to push the diaphragm. At the moment when the static torque sensor 11 senses the torque, the encoder in the servo motor 7 records the current angle as the starting point. After the servo motor 7 rotates to the specified angle, the control system automatically records the value of the torque applied by the balance chamber diaphragm to the lever at different angles under the action of the air pressure in the balance chamber, where the angle of the lever is the rotation angle of the servo motor 7.

[0028] 2. Test the relationship between IP cavity pressure and lever torque: Before starting, adjust the height of the slider 20 by hand-cranking the wheel, thereby adjusting the position of the push rod 18 and adjusting the push rod 18 to the IP cavity side. When the test starts, the IP cavity of the amplifier 15 to be tested is introduced with a specified air pressure, and the servo motor 7 is controlled to rotate counterclockwise through a pulse signal, driving the push rod 18 on the rotating head 14 to contact the lever on the IP cavity side of the amplifier 15 to be tested, thereby driving the lever to push the diaphragm. At the moment when the static torque sensor 11 senses the torque, the encoder in the servo motor 7 records the current angle as the starting point. After the servo motor 7 rotates to the specified angle, the control system automatically records the value of the torque applied by the IP cavity diaphragm to the lever at different angles under the action of the air pressure in the IP cavity, where the angle of the lever is the rotation angle of the servo motor 7.

[0029] 3. Test the throttling characteristics of the valve core under the A / B chamber: the amplifier 15 to be tested is installed on the base assembly 16 so that the air inlet of the A chamber is connected to the air hole, and the push rod 18 is adjusted to the test side of the A chamber, and the test is started. The input chamber of the A chamber of the amplifier 15 to be tested inputs the specified air pressure, and the servo motor 7 is controlled to rotate clockwise through a pulse signal, driving the push rod 18 on the rotating head 14 to contact the lever of the amplifier 15 to be tested, thereby driving the lever to push the valve core of the A chamber. At the moment when the static torque sensor 11 senses the torque, the encoder in the servo motor 7 records the current angle as the starting point. After the servo motor 7 rotates to the specified angle, the control system automatically records the inlet and outlet pressures of the A chamber, the angular displacement of the lever, the torque applied to the lever, and the flow value at the outlet end.

[0030] 4. Test the throttling characteristics of the valve core on the A / B cavity: the amplifier 15 to be tested is installed on the base assembly 16, so that the air inlet of cavity A is connected to the air hole, and the push rod 18 is adjusted to the test side of cavity A, and the test is started. The output cavity of cavity A of the amplifier 15 to be tested inputs the specified air pressure, and the servo motor 7 is controlled to rotate clockwise through the pulse signal, driving the push rod 18 on the rotating head 14 to contact the lever of the amplifier 15 to be tested, thereby driving the lever to push the valve core of cavity A. At the moment when the static torque sensor 11 senses the torque, the encoder in the servo motor 7 records the current angle as the starting point. After the servo motor 7 rotates to the specified angle, the control system automatically records the inlet and outlet pressures of cavity A, the angular displacement of the lever, the torque applied to the lever, and the flow value at the outlet end.

[0031] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to examples, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A characteristic test device for a lever amplifier, characterized in that: include: A lifting assembly, a rotation drive assembly, a static torque sensor (11), a push rod assembly and a base assembly (16), wherein the rotation drive assembly, the static torque sensor (11) and the push rod assembly are connected to the lifting assembly, the output end of the rotation drive assembly is connected to one end of the static torque sensor (11), and the other end of the static torque sensor (11) is connected to the push rod assembly, the rotation drive assembly is used to drive the push rod assembly to rotate, and the lifting assembly is used to adjust the height of the rotation drive assembly, the static torque sensor (11) and the push rod assembly; The base assembly (16) is located directly below the push rod assembly, and the base assembly (16) is provided with a positioning hole for installing the amplifier to be tested (15) and an air hole is provided on the side thereof, wherein the air hole is connected to an air source and communicates with the cavity air inlet hole of the amplifier to be tested (15).

2. The characteristic testing device of the lever amplifier according to claim 1, characterized in that: The rotary drive assembly comprises: a servo motor (7), a reducer (8) and a drive mounting bracket (5); the output end of the servo motor (7) is connected to the reducer (8); the reducer (8) is mounted on the drive mounting bracket (5); and the drive mounting bracket (5) is connected to the lifting assembly.

3. The characteristic testing device of the lever amplifier according to claim 2, characterized in that: The drive mounting bracket (5) is provided with a side reinforcing plate (6).

4. The characteristic testing device of the lever amplifier according to claim 1, characterized in that: The lifting assembly comprises a power module (17), a vertical support (1), a slide rail (21), a screw rod (19) and a slider (20); the slide rail (21) is installed along the length direction of the vertical support (1); the slider (20) is slidably connected to the slide rail (21); the screw rod (19) is threadedly connected to the slider (20); the screw rod (19) is connected to the power module (17); and the power module (17) is used to drive the screw rod (19) to rotate.

5. The characteristic testing device of the lever amplifier according to claim 4, characterized in that: The power module (17) is a hand-cranked rotating wheel or a motor.

6. The characteristic testing device of the lever amplifier according to claim 4, characterized in that: A back reinforcing plate (3) is provided on a side of the vertical support (1) facing away from the slide rail (21).

7. The characteristic testing device of the lever amplifier according to claim 1, characterized in that: The push rod assembly comprises a bearing seat (9), a bearing seat mounting bracket (12), a rotating head (14) and a push rod (18); the bearing seat (9) is mounted on the lifting assembly via the bearing seat mounting bracket (12); one end of the bearing seat (9) is connected to a static torque sensor (11) and the other end is connected to the rotating head (14); the push rod (18) is mounted on an end of the rotating head (14) facing away from the bearing seat (9); and a bearing is arranged in the bearing seat (9).

8. The characteristic testing device of the lever amplifier according to claim 1, characterized in that: Both ends of the static torque sensor (11) are connected to the rotary drive assembly and the push rod assembly via couplings (10) respectively.

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