Dynamic torque test bench
By designing a dynamic torque test bench, the synergy between the resistance component and the torque sensor is solved, the problem of the inability to obtain the complete torque curve of the angular stroke actuator in the prior art is solved, and accurate detection in the range of 0~90° is achieved.
Patent Information
- Application Number
- CN202411892317.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-03-14
AI Technical Summary
Existing torque detection equipment can only obtain the torque values of the angular stroke actuator at several angles, but cannot obtain the complete torque curve of 0~90°.
A dynamic torque test bench is designed, including a horizontal frame, a central shaft, a force arm assembly, a resistance assembly, a torque sensor and a sensor upper flange shaft. The rotation position of the central axis is adjusted by the resistance component, and combined with the synchronous rotation of the torque sensor, arbitrary angle stays between 0 and 90° is achieved, thereby obtaining a complete torque curve.
The complete torque curve detection of the diagonal stroke actuator in the range of 0~90° is realized, which improves the detection accuracy and efficiency, and adapts to the angle stroke actuators of different specifications.
Smart Images
Figure CN119618640A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of actuator testing tooling, and in particular relates to a dynamic torque testing bench. Background Art
[0002] The active stroke of the angular stroke actuator is generally 0~90°. In order to detect the active torque of the angular stroke actuator at different angles, it is necessary to test it. However, the existing detection method is static torque test, which generally fixes the angular stroke actuator to one end of the torque sensor, and the other end of the torque sensor is also fixedly connected, and then the angular stroke actuator is rotated to obtain the torque; specifically, if the angular stroke actuator is adjusted to the 25° position, the torque sensor is also adjusted to the 25° position, and the angular stroke is rotated, the torque at the current angle can be obtained.
[0003] Therefore, in the torque detection of the angular stroke actuator, generally only the torque values at several angle points can be obtained, and a complete torque curve cannot be obtained. Summary of the invention
[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a dynamic torque test bench for solving the technical problem that the existing torque detection equipment can only obtain the angular stroke actuator torque of several angles but cannot obtain a complete torque curve of 0~90°. The technical solution of the present invention to solve the above technical problem is as follows: a dynamic torque test bench, comprising: A horizontal frame, wherein a rotating shaft cavity and a resistance cavity are arranged in parallel in the horizontal frame; A central shaft, the central shaft is vertically and rotatably arranged in the rotating shaft cavity; A lever arm assembly, wherein the lever arm assembly is symmetrically arranged on the central axis and fixedly connected to the central axis; A resistance component, wherein the resistance component is arranged in the resistance cavity, and two output ends of the resistance component extend into the rotating shaft cavity, and the two output ends are respectively hinged to two ends of the force arm component; A torque sensor, the torque sensor is fixedly arranged on the top end of the central shaft; The sensor upper flange shaft is fixedly connected to the upper end of the torque sensor, and the sensor upper flange shaft is higher than the horizontal frame. The sensor upper flange shaft is used to connect the angular stroke actuator.
[0005] In the present invention, the central axis, the torque sensor and the flange axis on the sensor can be regarded as a whole, and the torque sensor can rotate synchronously with the central axis; the resistance component can provide resistance to the central axis through the lever arm component to prevent the central axis from rotating, and then the angular stroke actuator will also apply a force to drive the central axis to rotate. The two forces are in opposite directions, and the resistance can be maintained unchanged for a certain period of time. Then the force of the angular stroke actuator will act on the torque sensor, and the torque value of the angular stroke actuator at the current angle can be obtained; finally, the resistance component can adjust the position of the central axis through the lever arm component, so that the central axis can stay at any angle between 0 and 90 degrees, and a complete torque curve of the angular stroke sensor at 0 to 90 degrees can be obtained.
[0006] Furthermore: the resistance assembly includes two oil cylinders, the tail ends of the oil cylinders are hinged to the side walls of the resistance chamber, and the head ends of the oil cylinders are hinged to the two ends of the force arm plate assembly.
[0007] The beneficial effect of adopting this step is that the oil cylinder can rotate the power arm assembly by alternately extending and retracting, so as to facilitate the adjustment of the angular position of the central axis.
[0008] Further: the arm assembly includes at least two arm plates, a through hole is opened in the center of the arm plate, and a plurality of fixing holes are opened around the through hole, and the through hole is sleeved on the central axis; A corresponding connecting flange is provided on the central axis, and the connecting flange is screwed to the plurality of fixing holes; Two hinge shafts, the two hinge shafts are respectively arranged at two ends of the lever arm plate, and the hinge shafts are located between the two lever arm plates; The head end of the oil cylinder is connected to the hinge shaft through a spherical bearing.
[0009] The beneficial effects of adopting this step are as follows: the double-layer lever arm plate can ensure the structural rigidity, while the articulated shaft and the spherical bearing can ensure the smoothness of rotation, thereby avoiding affecting the accuracy of the torque test results.
[0010] Further: the lower end of the torque sensor is further provided with a sensor lower flange, the lower end of the sensor lower flange is provided with a first claw, and the upper end of the central shaft is provided with a second claw adapted to the first claw; A core rod is also provided between the lower flange of the sensor and the central axis, and two ends of the core rod are respectively inserted into the lower flange of the sensor and the central axis.
[0011] The beneficial effects of adopting this step are as follows: through the active connection method of plugging the first claw and the second claw, the torque sensor and the flange shaft on the sensor can be quickly replaced so as to be connected to angular stroke actuators of different specifications, thereby facilitating the testing of angular stroke actuators of different specifications; and the mandrel is used to ensure the coaxiality of the lower flange of the sensor and the center axis to prevent the deviation of the lower flange of the sensor from affecting the test results.
[0012] Furthermore, a shift fork connecting flange is provided on the upper top surface of the horizontal frame at a position corresponding to the central axis, and the shift fork connecting flange does not interfere with the torque sensor and the flange shaft on the sensor.
[0013] The beneficial effect of adopting this step is that the top surface of the fork connection flange is used as a bearing surface to bear the angular stroke actuator, thereby preventing the deadweight of the angular stroke actuator from affecting the connection stability between the output shaft of the angular stroke actuator and the flange shaft on the sensor.
[0014] Furthermore: an upper bearing seat and a lower bearing seat are provided at both ends of the central shaft, and the lower bearing seat is embedded in the bottom of the rotating shaft cavity; The upper bearing seat is embedded in the rotating shaft cavity.
[0015] The beneficial effects of adopting this step are as follows: the central shaft is provided with an upper bearing seat and a lower bearing seat, which allows the central shaft to rotate freely, without obstruction and without noise; and the upper bearing seat is embedded in the shaft cavity to shorten the distance between the upper bearing seat and the lower bearing seat, thereby shortening the total length of the central shaft and improving the shear resistance of the central shaft.
[0016] Furthermore: the central axis is a hollow tube.
[0017] The beneficial effect of adopting this step: the hollow tube is to reduce the weight of the central shaft.
[0018] The beneficial effects of the present invention are: 1. The rotation position of the central axis is adjusted through the resistance component to achieve continuous position change from 0 to 90 degrees. Then the resistance component provides resistance to prevent the central axis from rotating. At this time, the output shaft of the angular stroke actuator rotates to obtain the torque of the corresponding angle. Finally, the complete torque curve of the angular stroke actuator from 0 to 90 degrees can be summarized. 2. The torque sensor is movably connected to the central shaft through the lower flange of the sensor, which can realize the purpose of quickly replacing the torque sensor and the upper flange shaft of the sensor, and adapt to more specifications of angular stroke actuators; and this structure can also improve the detection efficiency when multiple specifications of angular stroke actuators are detected together; 3. Compared with the angle adjustment structure in which two relatively moving racks rub the gear shaft, the resistance component composed of the oil cylinder and the angle adjustment structure composed of the lever arm component are more compact and space-saving. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0020] Figure 1 A structural schematic diagram of a dynamic torque test bench provided by the present invention; Figure 2 for Figure 1 Right view of; Figure 3 for Figure 1 A top view of Figure 4 for Figure 2 Cross-sectional view of the middle AA section; Figure 5 for Figure 1 A cross-sectional view of the middle BB section; Figure 6 for Figure 1 Cross-sectional view of the middle CC section; Figure 7 A three-dimensional diagram of the central axis of a dynamic torque test bench provided by the present invention; Figure 8 A three-dimensional diagram of a sensor lower flange of a dynamic torque test bench provided by the present invention.
[0021] Reference numerals: 1-horizontal frame; 2-center axis; 3-arm plate; 4-oil cylinder; 5-torque sensor; 6-sensor upper flange shaft; 7-sensor lower flange; 8-fork connecting flange; 9-mandrel; 11-shaft cavity; 12-resistance cavity; 21-lower bearing seat; 22-upper bearing seat; 23-second claw; 71-first claw. DETAILED DESCRIPTION
[0022] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention. It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.
[0023] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.
[0024] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.
[0025] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0026] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a 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. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0027] Example like Figure 1 to Figure 6 As shown, a dynamic torque test bench provided by the present invention comprises: A horizontal frame 1, wherein a shaft cavity 11 and a resistance cavity 12 are arranged in parallel in the horizontal frame 1; A central shaft 2, the central shaft 2 being vertically and rotatably disposed in the rotating shaft cavity 11; A lever arm assembly, wherein the lever arm assembly is symmetrically arranged on the central shaft 2 and fixedly connected to the central shaft 2; A resistance component, wherein the resistance component is disposed in the resistance cavity 12, and two output ends of the resistance component extend into the shaft cavity 11, and the two output ends are respectively hinged to two ends of the force arm component; A torque sensor 5, wherein the torque sensor 5 is fixedly arranged at the top end of the central shaft 2; The sensor upper flange shaft 6 is fixedly connected to the upper end of the torque sensor 5, and the sensor upper flange shaft 6 is higher than the horizontal frame 1. The sensor upper flange shaft 6 is used to connect the angular stroke actuator.
[0028] In the present invention, the central axis 2, the torque sensor 5 and the flange axis 6 on the sensor can be regarded as a whole, and the torque sensor 5 can rotate synchronously with the central axis 2; and the resistance component can provide resistance to the central axis 2 to prevent the central axis 2 from rotating through the force arm component, and then the angular stroke actuator will also apply a force to drive the central axis 2 to rotate. The directions of these two forces are opposite, and the resistance can be maintained unchanged for a certain period of time, then the force of the angular stroke actuator will act on the torque sensor 5, and the torque value of the angular stroke actuator at the current angle can be obtained; finally, the resistance component can adjust the position of the central axis 2 through the force arm component, so that the central axis 2 can stay at any angle between 0 and 90 degrees, and a complete torque curve of the angular stroke sensor at 0 to 90 degrees can be obtained.
[0029] On the basis of the above technical solution, the resistance assembly includes two cylinders 4 (generally, oil cylinders are selected, which can provide strong hydraulic pressure, while the loads of air cylinders and rack cylinders are small and cannot meet the testing requirements of large-scale angular stroke actuators). The tail end of the cylinder 4 is hinged to the side wall of the resistance chamber, and the head end of the cylinder 4 is hinged to the two ends of the force arm plate assembly.
[0030] The oil cylinder 4 can rotate the power arm assembly by alternately extending and retracting, so as to facilitate the adjustment of the angular position of the central axis 2.
[0031] On the basis of the above technical solution, the arm assembly includes at least two arm plates 3, a through hole is opened in the center of the arm plate 3, and a plurality of fixing holes are opened around the through hole, and the through hole is sleeved on the central shaft 2; The central shaft 2 is provided with a corresponding connecting flange, and the connecting flange is screwed to the plurality of fixing holes; Two hinge shafts, the two hinge shafts are respectively arranged at two ends of the lever arm plate 3, and the hinge shafts are located between the two lever arm plates 3; The head end of the oil cylinder 4 is connected to the articulated shaft via a spherical bearing.
[0032] The double-layer lever arm plate 3 can ensure the structural rigidity, while the articulated shaft and the spherical bearing can ensure the smoothness of rotation, thereby avoiding affecting the accuracy of the torque test result.
[0033] On the basis of the above technical solution, the lower end of the torque sensor 5 is further provided with a sensor lower flange 7, the lower end of the sensor lower flange 7 is provided with a first claw 71, and the upper end of the central shaft 2 is provided with a second claw 23 adapted to the first claw 71; A core rod 9 is further provided between the sensor lower flange 7 and the central axis 2 , and two ends of the core rod 9 are respectively inserted into the sensor lower flange 7 and the central axis 2 .
[0034] By means of the active connection between the first claw 71 and the second claw 23, the torque sensor 5 and the upper flange shaft 6 of the sensor can be quickly replaced so as to be connected to angular stroke actuators of different specifications, thereby facilitating the testing of angular stroke actuators of different specifications. The core rod 9 is used to ensure the coaxiality of the lower flange 7 of the sensor and the center axis 2, so as to avoid the deviation of the lower flange 7 of the sensor affecting the test results.
[0035] On the basis of the above technical solution, a fork connecting flange 8 is further provided on the upper top surface of the horizontal frame 1 at a position corresponding to the central axis 2, and the fork connecting flange 8 does not interfere with the torque sensor 5 and the sensor upper flange shaft 6.
[0036] The top surface of the fork connection flange 8 is used as a bearing surface to bear the angular stroke actuator, so as to prevent the deadweight of the angular stroke actuator from affecting the connection stability between the output shaft of the angular stroke actuator and the flange shaft 6 on the sensor.
[0037] On the basis of the above technical solution, an upper bearing seat 22 and a lower bearing seat 21 are provided at both ends of the central shaft 2, and the lower bearing seat 21 is embedded in the bottom of the shaft cavity 11; The upper bearing seat 22 is embedded in the shaft cavity 11 .
[0038] The center shaft 2 is provided with an upper bearing seat 22 and a lower bearing seat 21, which allows the center shaft 2 to rotate freely, without obstruction and without noise; and the upper bearing seat 22 is embedded in the shaft cavity 11 to shorten the distance between the upper bearing seat 22 and the lower bearing seat 21, thereby shortening the total length of the center shaft 2 and improving the shear resistance of the center shaft 2.
[0039] On the basis of the above technical solution, the central axis 2 is a hollow tube.
[0040] The hollow tube is used to reduce the weight of the central shaft 2.
[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A dynamic torque test bench, characterized in that: include: A horizontal frame, wherein a rotating shaft cavity and a resistance cavity are arranged in parallel in the horizontal frame; A central shaft, the central shaft is vertically and rotatably arranged in the rotating shaft cavity; A lever arm assembly, wherein the lever arm assembly is symmetrically arranged on the central axis and fixedly connected to the central axis; A resistance component, wherein the resistance component is arranged in the resistance cavity, and two output ends of the resistance component extend into the rotating shaft cavity, and the two output ends are respectively hinged to two ends of the force arm component; A torque sensor, the torque sensor is fixedly arranged on the top end of the central shaft; The sensor upper flange shaft is fixedly connected to the upper end of the torque sensor, and the sensor upper flange shaft is higher than the horizontal frame. The sensor upper flange shaft is used to connect the angular stroke actuator.
2. The dynamic torque test bench according to claim 1, characterized in that: The resistance assembly comprises two oil cylinders, the tail ends of the oil cylinders are hinged to the side walls of the resistance chamber, and the head ends of the oil cylinders are hinged to the two ends of the force arm plate assembly.
3. The dynamic torque test bench according to claim 2, characterized in that: The arm assembly comprises at least two arm plates, a through hole is formed in the center of the arm plate, and a plurality of fixing holes are formed around the through hole, and the through hole is sleeved on the central axis; A corresponding connecting flange is provided on the central axis, and the connecting flange is screwed to the plurality of fixing holes; Two hinge shafts, the two hinge shafts are respectively arranged at two ends of the lever arm plate, and the hinge shafts are located between the two lever arm plates; The head end of the oil cylinder is connected to the hinge shaft through a spherical bearing.
4. The dynamic torque test bench according to claim 1, characterized in that: The torque sensor is further provided with a sensor lower flange at the lower end, a first claw is provided at the lower end of the sensor lower flange, and a second claw adapted to the first claw is provided at the upper end of the central shaft; A core rod is also provided between the lower flange of the sensor and the central axis, and two ends of the core rod are respectively inserted into the lower flange of the sensor and the central axis.
5. The dynamic torque test bench according to claim 1, characterized in that: A shift fork connecting flange is also provided on the upper top surface of the horizontal frame at a position corresponding to the central axis, and the shift fork connecting flange does not interfere with the torque sensor and the flange shaft on the sensor.
6. The dynamic torque test bench according to claim 1, characterized in that: An upper bearing seat and a lower bearing seat are provided at both ends of the central shaft, and the lower bearing seat is embedded in the bottom of the rotating shaft cavity; The upper bearing seat is embedded in the rotating shaft cavity.
7. The dynamic torque test bench according to claim 1, 4 or 6, characterized in that: The central axis is a hollow tube.