Thrust detection device for electric actuator

Abstract

The utility model discloses a thrust detection device for an electric actuator, which belongs to the field of part performance detection and comprises a mounting seat, a force transducer and a limiting piece. The mounting base comprises a bottom plate, a top plate and a plurality of connecting rods, the bottom plate and the top plate are fixedly connected through the connecting rods, and an assembly opening is formed in the top plate. The force measuring sensor is clamped between the bottom plate and the top plate, and the detection end of the force measuring sensor right faces the assembling opening. The limiting member and the assembling port cooperate with each other to limit the degree of freedom of the to-be-tested workpiece. The electric actuator is limited in the assembling opening through the limiting piece, the force measuring sensor is fixed in the mounting base, when the electric actuator is triggered, the output shaft of the electric actuator triggers the detection end of the force measuring sensor, and then thrust detection is achieved. According to the invention, thrust detection can be carried out on the small-size electric actuator, the detection equipment is simple in structure, and the detection process is high in reliability.

Description

Technical Field

[0001] The utility model belongs to the field of part performance detection, and specifically relates to a thrust detection device for an electric actuator. Background Art

[0002] An electric actuator is a special electric actuating device that drives mechanical components to perform specific actions by receiving electrical signals. The specific working principle is to convert electrical energy into mechanical energy and complete a predetermined operation by pushing or pulling mechanical components. This device is mainly used to release insurance, initiate fuses, or control other critical operations.

[0003] In a fuse system, an electric actuator is used to release insurance to ensure the safe transportation and storage of the fuse and to release the insurance and prepare for detonation after receiving a launch signal. In a precise ignition control system, an electric actuator can be used for ignition control to trigger a fuse or gunpowder through precise mechanical actions. In a safety system, an electric actuator is used to perform key unlocking or locking operations to ensure the safety of the system. Therefore, an electric actuator needs to have performances such as high-precision thrust, fast response, and miniaturization. Due to the small volume of the electric actuator, it is difficult for existing propulsion detection equipment to effectively and reliably assemble the electric actuator for propulsion detection tests. Content of the Utility Model

[0004] The purpose of the utility model is to provide a thrust detection device for an electric actuator to solve the problems raised in the above-mentioned prior art.

[0005] Provide a thrust detection device for an electric actuator, including:

[0006] A mounting seat, which includes a bottom plate, a top plate, and several connecting rods. The bottom plate and the top plate are fixedly connected by several connecting rods, and an assembly port is opened on the top plate.

[0007] A force measuring sensor, which is clamped between the bottom plate and the top plate, and the detection end of the force measuring sensor faces the assembly port.

[0008] A limiting member, which cooperates with the assembly port to limit the degree of freedom of the workpiece to be measured.

[0009] Furthermore, the limiting member includes a retaining plate and a plug screw. The retaining plate is fixedly connected to one end of the top plate close to the force measuring sensor. A through hole for the output shaft of the workpiece to be measured to pass through is opened at the position of the retaining plate facing the assembly port. The plug screw is detachably connected to the inside of the assembly port and abuts against the workpiece to be measured. The retaining plate plays a limiting role on the workpiece to be measured and cooperates with the plug screw to clamp the workpiece to be measured.

[0010] Further, it also includes a starting power supply. Through holes penetrate through both ends of the plug screw, and the wire of the starting power supply can extend into the interior of the through hole and be electrically connected to the workpiece to be tested. The starting power supply is used to control the opening and closing of the workpiece to be tested externally. The wire of the starting power supply is connected to the workpiece to be tested through the plug screw, eliminating the need to open additional channels for the wire to penetrate, enhancing the integrated function of the plug screw and simplifying the structure of the detection device.

[0011] Further, an assembly groove is formed by inward depression at the abutting portion between the plug screw and the workpiece to be tested, and the assembly groove communicates with the through hole. The workpiece to be tested can be restricted within the assembly groove to improve stability during the test, preventing vibration and offset during the firing of the workpiece to be tested, which may lead to inaccurate thrust detection data.

[0012] Further, the connection between the plug screw and the assembly port is a threaded connection, and a notch is provided at one end of the plug screw away from the force sensor. The threaded connection not only serves to fix the workpiece to be tested but also provides a stable reaction force for the firing of the workpiece to be tested. At the same time, the screwing depth of the plug screw can be flexibly adjusted according to the volume of the workpiece to be tested. The notch part can cooperate with other tools (such as a cross screwdriver or a flat screwdriver) to screw out the plug screw, avoiding the wire and enabling rotational operation of the plug screw.

[0013] Further, a connector is detachably provided at the detection end of the force sensor. The connector can adjust the distance between the detection end of the force sensor and the workpiece to be tested and effectively transmit the thrust generated when the workpiece to be tested is fired.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] In this application, the electric actuator is restricted inside the assembly port through the limiting member, and the force sensor is fixed within the mounting seat. When the electric actuator is triggered, the output shaft of the electric actuator strikes the detection end of the force sensor, thereby realizing thrust detection. This application can perform thrust detection on small-sized electric actuators, with a simple detection device structure and high reliability during the detection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present drawings or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following-described drawings are only some embodiments of the present drawings. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of an electric actuator thrust detection device;

[0018] Figure 2It is a partial structural schematic diagram of an electric actuator thrust detection device;

[0019] Figure 3 It is Figure 2 an enlarged view of area A in

[0020] In the figure: 1. Mounting base; 11. Bottom plate; 12. Top plate; 13. Connecting rod; 14. Assembly port; 2. Force measuring sensor; 21. Connector; 3. Limiting part; 31. Retaining plate; 311. Through hole; 32. Plug screw; 321. Through hole; 322. Assembly groove; 323. Groove opening; 4. Starting power supply; 5. Digital display meter. Specific implementation mode

[0021] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be described and explained below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application. Based on the embodiments provided in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0022] Obviously, the accompanying drawings in the following description are only some examples or embodiments of the present application. For those of ordinary skill in the art, without creative efforts, the present application can also be applied to other similar scenarios based on these drawings. In addition, it can also be understood that although the efforts made in this development process may be complex and lengthy, for those of ordinary skill in the art related to the content disclosed in the present application, some design, manufacturing or production changes made based on the technical content disclosed in the present application are only conventional technical means and should not be understood as the content disclosed in the present application being insufficient.

[0023] However, there will be cases where unnecessary detailed descriptions are omitted. For example, there are cases where detailed descriptions of well-known matters are omitted and repeated descriptions of actually identical structures are omitted. This is to avoid the following description from becoming unnecessarily lengthy and to facilitate the understanding of those skilled in the art. In addition, the accompanying drawings and the following description are provided for those skilled in the art to fully understand the present application and are not intended to limit the subject matter recited in the claims.

[0024] Please refer to Figures 1-3As shown, in the embodiment of the utility model, an electric actuator thrust detection device includes a mounting seat 1, a force sensor 2 and a stopper 3. The mounting seat 1 includes a bottom plate 11, a top plate 12 and a plurality of connecting rods 13, the bottom plate 11 and the top plate 12 are fixedly connected by a plurality of connecting rods 13, and an assembly opening 14 is provided on the top plate 12. The force sensor 2 is clamped between the bottom plate 11 and the top plate 12, and the detection end of the force sensor 2 is facing the assembly opening 14. The stopper 3 and the assembly opening 14 cooperate with each other to limit the degree of freedom of the workpiece to be measured.

[0025] The bottom plate 11 is used to receive the force sensor 2 and bear the thrust transmitted by the force sensor 2. The top plate 12 is used to assemble the electric actuator and bear the reverse thrust transmitted by the electric actuator when it is fired. The forces at both ends of the mounting seat 1 are finally transmitted to a number of connecting rods 13, which can stabilize the detection device by offsetting the thrust and reverse thrust. The electric actuator is restricted inside the assembly port 14 by the limiter 3, so that the electric actuator will not deviate when it is fired, avoiding the thrust loss caused by the offset of the electric actuator and ensuring the detection accuracy. The force sensor 2 is electrically connected to the digital display 5. After the force sensor 2 detects the thrust, it transmits the electrical signal to the digital display 5 for display.

[0026] The limiting member 3 includes a baffle 31 and a blocking screw 32. The baffle 31 is in the shape of a ring with a through hole 311 in the middle, and is fixed to the bottom of the top plate 12 by a round head screw. The external cylinder of the electric actuator is limited by the baffle 31 so as not to fall, and the output shaft inside the cylinder can penetrate the through hole 311 on the baffle 31 to trigger the force sensor 2. The blocking screw 32 limits the electric actuator from the tail of the electric actuator and bears the reaction force transmitted by the electric actuator when it is triggered. After the thrust test is completed, the blocking screw 32 can be removed, and the electric actuator can be taken out and replaced to perform thrust testing on the next batch of electric actuators.

[0027] The detection device also includes a starting power supply 4. The two ends of the plugging screw 32 are mutually penetrated with through holes 321. The wire of the starting power supply 4 can extend into the inside of the through hole 321 and be electrically connected to the workpiece to be tested. The starting power supply 4 is used to control the action execution of the electric actuator. The through hole 321 of the plugging screw 32 provides an escape space for the wire of the starting power supply 4, so that the wire can pass through the plugging screw 32 and be electrically connected to the electric actuator.

[0028] The abutting portion of the plug screw 32 and the workpiece to be measured is recessed inward to form an assembly groove 322, and the assembly groove 322 communicates with the through hole 321. The electric actuator can be restricted within the assembly groove 322 to improve the stability during the test, prevent vibration and deviation during the firing of the workpiece to be measured, and thus avoid inaccurate thrust detection data. The diameter of the assembly groove 322 is larger than that of the through hole 321, and there is a clearance fit between the assembly groove 322 and the electric actuator, so as to avoid large interference and blockage between the plug screw 32 and the electric actuator when the plug screw 32 is fitted with the assembly port 14, making it impossible to assemble smoothly. It should be noted here that the remaining small clearance will not cause large deviation of the electric actuator, and the influence of the vibration of this part of the electric actuator on the accuracy of thrust detection can be ignored.

[0029] There is a threaded connection between the plug screw 32 and the assembly port 14, and a notch 323 is provided at one end of the plug screw 32 away from the force sensor 2. The threaded connection can fix the electric actuator and provide a stable reaction force for the firing of the workpiece to be measured. At the same time, the screwing depth of the plug screw 32 can be flexibly adjusted according to the volume of the electric actuator. The notch 323 part can be used to screw out the plug screw 32 with a cross screwdriver or a flat screwdriver, avoiding the rotation operation of the plug screw 32 by the wire.

[0030] Furthermore, there is a clearance fit between the assembly groove 322 and the electric actuator. When the plug screw 32 is threadedly connected to the assembly port 14, the remaining clearance can ensure that the electric actuator does not rotate synchronously with the plug screw 32, thus avoiding large torsion of the wire.

[0031] The detection end of the force sensor 2 is detachably provided with a connector 21, and the connector 21 can adjust the distance between the detection end of the force sensor 2 and the electric actuator and effectively transmit the thrust when the electric actuator fires.

[0032] It should be noted that this application is not limited to the above embodiments. The above embodiments are only examples, and embodiments with the same structure and the same function and effect as the technical idea within the technical solution scope of this application are all included in the technical scope of this application. In addition, within the scope of not departing from the main idea of this application, various deformations that can be thought of by those skilled in the art are applied to the embodiments, and other ways constructed by combining some constituent elements of the embodiments are also included in the scope of this application.

Claims

1. An electric actuator thrust detection device, characterized in that: include: A mounting seat (1), comprising a bottom plate (11), a top plate (12) and a plurality of connecting rods (13), wherein the bottom plate (11) and the top plate (12) are fixedly connected via the plurality of connecting rods (13), and an assembly opening (14) is provided on the top plate (12); A force sensor (2), the force sensor (2) being clamped between the bottom plate (11) and the top plate (12), with the detection end of the force sensor (2) facing the assembly opening (14); A limiting member (3), wherein the limiting member (3) and the assembly opening (14) cooperate with each other to limit the degree of freedom of the workpiece to be measured.

2. The electric actuator thrust detection device according to claim 1, characterized in that: The limiting member (3) comprises a blocking piece (31) and a blocking screw (32); the blocking piece (31) is fixedly connected to one end of the top plate (12) close to the force sensor (2); a through hole (311) for the output shaft of the workpiece to be measured to movably pass through is formed at a position of the blocking piece (31) facing the assembly opening (14); and the blocking screw (32) is detachably connected to the interior of the assembly opening (14) and abuts against the workpiece to be measured.

3. The electric actuator thrust detection device according to claim 2, characterized in that: It also includes a starting power supply (4), and through holes (321) are mutually penetrated at both ends of the plugging screw (32), and the wire of the starting power supply (4) can extend into the inside of the through hole (321) and be electrically connected to the workpiece to be tested.

4. The electric actuator thrust detection device according to claim 3, characterized in that: The abutting portion of the blocking screw (32) and the workpiece to be measured is recessed inwardly to form an assembly groove (322), and the assembly groove (322) is communicated with the through hole (321).

5. The electric actuator thrust detection device according to claim 3, characterized in that: The blocking screw (32) is threadedly connected to the assembly opening (14), and a notch (323) is provided at one end of the blocking screw (32) away from the force sensor (2).

6. The electric actuator thrust detection device according to claim 1, characterized in that: The detection end of the force sensor (2) is detachably provided with a connector (21).

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