Detection device

Abstract

The present invention discloses a detection device. The detection device is used to detect a displacement compensation mechanism. The displacement compensation mechanism includes an outer ring and an inner ring connected to the outer ring, one of the outer ring and the inner ring being movably disposed relative to the other. The detection device includes a first bracket, a tension and compression sensor, a hydraulic cylinder, a displacement sensor, and a controller. The tension and compression sensor is connected to the inner ring; the hydraulic cylinder shaft of the hydraulic cylinder is connected to the tension and compression sensor, and the hydraulic cylinder is configured to apply a force to the tension and compression sensor to cause the inner ring to move. The displacement sensor is disposed on the first bracket; and the controller is electrically connected to the displacement sensor and the tension and compression sensor, so that the displacement sensor collects first information indicating the movement of the inner ring and the tension and compression sensor collects second information indicating the applied force. Thus, the displacement sensor collects first information indicating the movement of the inner ring and the tension and compression sensor collects second information indicating the applied force, resulting in a multi-functional detection device with high detection efficiency.

Description

Technical Field

[0001] The present invention relates to the field of detection devices, in particular to a detection device. Background Art

[0002] A displacement compensation mechanism is a component used to compensate for the relative displacement between connected devices in a power transmission shaft system, and it is widely used in various industries. In a power transmission shaft system, the displacement compensation mechanism connects the first shaft and the second shaft of the power transmission shaft system. When power is transmitted between the first shaft and the second shaft, the displacement compensation mechanism is used to compensate for the axial displacement, radial displacement, and angular displacement between the first shaft and the second shaft. The performance parameters of the displacement compensation mechanism directly affect the performance of the power transmission shaft system and are important evaluation indicators. The existing devices for detecting the performance parameters of the displacement compensation mechanism have relatively simple functions and can generally only detect a single performance parameter. There are also problems such as low detection efficiency and large errors in the detection system.

[0003] To this end, the present invention provides a detection device to at least partially solve the above-mentioned problem. Summary of the Invention

[0004] The Summary of the Invention introduces a series of simplified concepts that will be further described in the Detailed Description of the Invention. The Summary of the Invention is not intended to limit the key features and essential features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0005] The present invention provides a detection device, which is used to detect a displacement compensation mechanism. The displacement compensation mechanism includes an outer ring and an inner ring connected to the outer ring, and one of the outer ring and the inner ring is movably arranged relative to the other. The detection device includes: a first bracket, the first bracket is used to fix the outer ring; a tension and compression sensor, the tension and compression sensor is connected to the inner ring; a hydraulic cylinder, the hydraulic cylinder shaft of the hydraulic cylinder is connected to the tension and compression sensor, the hydraulic cylinder is used to apply a force to the tension and compression sensor to move the inner ring; a displacement sensor, the displacement sensor is arranged on the first bracket; and a controller, the controller is electrically connected to the displacement sensor and the tension and compression sensor to collect first information indicating the movement of the inner ring through the displacement sensor, and collect second information indicating the force through the tension and compression sensor.

[0006] According to the detection device of the present invention, the detection device can collect first information representing the movement of the inner ring through the displacement sensor, and collect second information representing the force through the tension and compression sensor, with multiple detection functions and high detection efficiency.

[0007] Optionally, there is one hydraulic cylinder, the shaft of the hydraulic cylinder expands and contracts along the axial direction of the inner ring, and the controller determines the axial stiffness of the displacement compensation mechanism through the first information and the second information.

[0008] Optionally, there is one hydraulic cylinder, and in the radial direction of the inner ring, the hydraulic cylinder axis of the hydraulic cylinder and the center of the inner ring are spaced apart, and the force causes the inner ring to swing relative to a plane perpendicular to the axis of the inner ring. The first information represents the movement of the non-center position of the inner ring along its axial direction, and the controller determines the angular stiffness of the displacement compensation mechanism through the first information and the second information.

[0009] Optionally, the size of the interval is adjustable.

[0010] Optionally, there are two hydraulic cylinders.

[0011] Optionally, the hydraulic cylinder shafts of the two hydraulic cylinders are respectively located at two ends of the inner ring in the radial direction.

[0012] Optionally, in the radial direction of the inner ring, the hydraulic cylinder axes of the two hydraulic cylinders are symmetrically arranged with respect to the axis of the inner ring.

[0013] Optionally, the detection device also includes a support plate, a gasket and a transition connector. The hydraulic cylinder shaft of one hydraulic cylinder is connected to one end of the support plate, and the hydraulic shaft of another hydraulic cylinder is connected to the other end of the support plate. The support plate is provided with a plurality of support plate mounting holes symmetrically spaced along the length direction of the support plate. The support plate is connected to the inner ring through the support plate mounting holes, the gasket and the transition connector.

[0014] Optionally, the directions of the forces acting on the two hydraulic cylinders are the same.

[0015] Optionally, the directions of the forces acting on the two hydraulic cylinders are opposite. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following drawings of the present invention are incorporated herein as part of the present invention for understanding the present invention. The drawings show embodiments of the present invention and the description thereof is used to explain the principle of the present invention.

[0017] In the attached figure:

[0018] Figure 1 is a front view of a detection device according to one embodiment of the present invention;

[0019] Figure 2 for Figure 1 A-direction side view;

[0020] Figure 3 for Figure 1 BB cross-sectional view of ; and

[0021] Figure 4 for Figure 1 A partial enlarged schematic diagram of point C.

[0022] Description of Reference Numerals

[0023] 110: outer ring 120: inner ring

[0024] 130: First bracket 140: Tension and compression sensor

[0025] 150: Hydraulic cylinder 151: Hydraulic cylinder shaft

[0026] 160: Displacement sensor 170: Support plate

[0027] 180: Washer 190: Transition piece

[0028] 200: Second bracket 210: Mounting bolt

[0029] 220: Tension and compression sensor seat 230: External thread self-lubricating rod end joint bearing DETAILED DESCRIPTION

[0030] In the following description, numerous specific details are provided to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced without one or more of these details. In other instances, certain technical features well known in the art are not described to avoid confusion with the present invention.

[0031] It should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of the features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0032] Exemplary embodiments according to the present invention will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present invention thorough and complete and to fully convey the concepts of these exemplary embodiments to those skilled in the art. In the accompanying drawings, the thickness of layers and regions is exaggerated for clarity, and identical reference numerals are used to represent identical elements, and their descriptions will be omitted.

[0033] A preferred embodiment of the present invention provides a detection device for detecting performance parameters of a displacement compensation mechanism.

[0034] like Figure 1As shown, the detection device includes a first bracket 130, a second bracket 200, a hydraulic cylinder 150, a support plate 170, a transition connector 190, a washer 180, a displacement sensor 160, a tension and compression sensor 140, and a mounting rail. The mounting rail is fixed (for example, the mounting rail is set on the ground). The first bracket 130 and the second bracket 200 are both movably set on the mounting rail in the extension direction of the mounting rail. The first bracket 130 and the second bracket 200 are spaced apart along the extension direction of the mounting rail. In this way, the position of the first bracket 130 on the mounting rail can be adjusted. The position of the second bracket 200 on the mounting rail can be adjusted. In this way, the distance between the first bracket 130 and the second bracket 200 can be adjusted. As a result, it is convenient to adjust the distance between the hydraulic cylinder 150 and the displacement compensation mechanism to be detected in the extension direction of the mounting rail, and the installation of the detection device is convenient. When the first bracket 130 and the second bracket 200 are moved to the preset position, they can be fixed to the floor using anchor bolts.

[0035] like Figure 1 and Figure 3 As shown, the outer ring 110 of the displacement compensation mechanism to be tested can be fixedly connected to the first bracket 130 via multiple circumferentially spaced bolts. A transition piece 190 is a circular disc. One end face of transition piece 190 abuts against the end face of inner ring 120. Transition piece 190 can be connected to inner ring 120 via multiple circumferentially spaced bolts. Transition piece 190 and inner ring 120 are coaxially arranged.

[0036] like Figure 3 and Figure 4 As shown, there are two hydraulic cylinders 150, both of which are fixedly mounted on the second bracket 200. The hydraulic cylinder shaft 151 of the hydraulic cylinder 150 can be telescopically mounted along the extension direction of the mounting rail. A notch is provided in the middle portion of the free end of the hydraulic cylinder shaft 151 of the hydraulic cylinder 150. A through hole is provided at the free end. The through hole extends through the free end of the hydraulic cylinder shaft 151. The direction of the through hole is perpendicular to the direction of the notch. The detection device also includes an externally threaded self-lubricating rod end spherical bearing 230, a tension and compression sensor seat 220, and two mounting bolts 210. The portion of the externally threaded self-lubricating rod end spherical bearing 230 with the bearing extends into the notch of the hydraulic cylinder shaft 151. The bolt passes through the through hole of the hydraulic cylinder shaft 151 and the bearing hole of the externally threaded self-lubricating rod end spherical bearing 230 and is then connected to a nut. In this way, the externally threaded self-lubricating rod end spherical bearing 230 is movably connected to the notch of the hydraulic cylinder shaft 151.

[0037] like Figure 2 and Figure 3As shown, the length of the support plate 170 is approximately the same as the outer diameter of the outer ring 110. One end of the support plate 170 is connected to a tension and compression sensor seat 220. The other end of the support plate 170 is connected to another tension and compression sensor seat 220. The tension and compression sensor 140 is disposed on the tension and compression sensor seat 220. The threaded end of the externally threaded self-lubricating rod end spherical bearing 230 is threadedly connected to the threaded mounting hole of the tension and compression sensor 140. In this way, both ends of the support plate 170 are connected to the hydraulic cylinder shaft 151 of a hydraulic cylinder 150 through the tension and compression sensor seat 220, the tension and compression sensor 140, and the externally threaded self-lubricating rod end spherical bearing 230 in sequence. The tension and compression sensor 140 is used to sense the magnitude and direction of the force exerted by the hydraulic cylinder shaft 151 on the tension and compression sensor seat 220.

[0038] In the longitudinal direction of the support plate 170, the distances between the two tension and compression sensor seats 220 and the center of the support plate 170 are equal. The support plate 170 is provided with two support plate mounting holes. In the longitudinal direction of the support plate 170, the two support plate mounting holes are located on either side of the center of the support plate 170. In the longitudinal direction of the support plate 170, the two support plate mounting holes are located at equal distances from the center of the support plate 170. It is understood that there may be multiple support plate mounting holes. The multiple support plate mounting holes are spaced apart along the longitudinal direction of the support plate 170. In the longitudinal direction of the support plate 170, some support plate mounting holes are located on one side of the center of the support plate 170, while other support plate mounting holes are located on the other side of the center of the support plate 170. In the longitudinal direction of the support plate 170, the support plate mounting holes located on either side of the center of the support plate 170 are provided in a one-to-one correspondence. In the longitudinal direction of the support plate 170, the distances between the corresponding support plate mounting holes and the center of the support plate 170 are equal.

[0039] The detection device also includes two washers 180 and two mounting bolts 210. The washers 180 are disposed between the support plate 170 and the transition piece 190. The center hole of one washer 180 is approximately coaxial with one support plate mounting hole. The center hole of the other washer 180 is approximately coaxial with the other support plate mounting hole. The transition piece 190 is provided with two connector holes corresponding one to each of the two support plate mounting holes. One mounting bolt 210 passes through one support plate mounting hole, one washer 180, and one connector hole, and then is threadedly connected to the inner ring 120. Another mounting bolt 210 passes through another support plate mounting hole, another washer 180, and another connector hole, and then is threadedly connected to the inner ring 120. In this way, the hydraulic cylinder 150 is connected to the inner ring 120 via the support plate 170, the washers 180, and the transition piece 190.

[0040] In this embodiment, the two connector holes on the transition piece 190 are symmetrically arranged about the axis of the transition piece 190 in the radial direction of the transition piece 190. Because the transition piece 190 and the inner ring 120 are coaxially arranged, the two support plate mounting holes are symmetrically arranged about the axis of the inner ring 120 in the radial direction of the inner ring 120. The two hydraulic cylinder shafts 151 are symmetrically arranged about the axis of the inner ring 120 in the radial direction of the inner ring 120. In the radial direction of the inner ring 120, the hydraulic cylinder shafts 151 are spaced apart from the center of the inner ring 120.

[0041] In this embodiment, the forces exerted by the two hydraulic cylinder shafts 151 on the tension and compression sensor holder 220 can be directed in the same direction and have the same magnitude. In this case, these forces can cause the inner ring 120 to move along its axis. The forces exerted by the two hydraulic cylinder shafts 151 on the tension and compression sensor holder 220 can be directed in the same direction and have the same magnitude. In this case, these forces can cause the inner ring 120 to oscillate relative to a plane perpendicular to its axis.

[0042] In an embodiment not shown, the detection device may also include only one hydraulic cylinder 150. On the one hand, in the radial direction of the inner ring 120, there is a gap between the hydraulic cylinder axis 151 of the hydraulic cylinder 150 and the center of the inner ring 120. In this case, the force applied by the hydraulic cylinder 150 can cause the inner ring 120 to swing relative to a plane perpendicular to the axis of the inner ring 120. On the other hand, in the radial direction of the inner ring 120, the hydraulic cylinder axis 151 of the hydraulic cylinder 150 can also coincide with the center of the inner ring 120. In this case, the force applied by the hydraulic cylinder 150 can cause the inner ring 120 to move along its axis.

[0043] Two displacement sensors 160 are provided. Each displacement sensor 160 is located on the side of the outer ring 110 away from the hydraulic cylinder 150. Displacement sensors 160 are fixedly connected to the first bracket 130. In the radial direction of the inner ring 120, a gap exists between the displacement sensor 160 and the center of the inner ring 120. Displacement sensors 160 are used to sense movement of the sensing portion of the inner ring 120 along the axis of the inner ring 120. The projections of the sensing portion and displacement sensors 160 on a projection plane at least partially overlap. The projection plane is perpendicular to the axis of the inner ring 120. It is understood that displacement sensors 160 are conventional displacement sensors 160 and will not be described in detail here.

[0044] When the inner ring 120 moves along its axial direction, the displacement sensor 160 can sense the moving direction and moving distance of the inner ring 120 .

[0045] When inner ring 120 oscillates relative to a plane perpendicular to the axis of inner ring 120, displacement sensor 160 can also sense the direction and distance of movement of the sensing portion of inner ring 120 along the axis of inner ring 120. Thus, the controller described below uses a trigonometric function to determine the oscillation angle of inner ring 120 based on the distance the sensing portion has moved along the axis of inner ring 120 and the distance between the sensing portion and the center of inner ring 120. The distance between the sensing portion and the center of inner ring 120 is the distance between the projection of the sensing portion and the projection of the center of inner ring 120 on the aforementioned projection plane. The oscillation direction of inner ring 120 is determined based on the direction of movement of the sensing portion along the axis of inner ring 120.

[0046] In this embodiment, the two hydraulic cylinder shafts 151 are symmetrically positioned about the center of the inner ring 120 in the radial direction of the inner ring 120. This ensures that the two hydraulic cylinders 151 exert a uniform force on the inner ring 120 through the support plate 170. This allows for precise control of the movement of the inner ring 120 (either its oscillation or its axial movement), reducing measurement errors caused by uneven force applied by the two hydraulic cylinders 151. In the radial direction of the inner ring 120, the two sensors are symmetrically positioned about the axis of the inner ring 120. As a result, when the inner ring 120 moves, the direction and distance of movement of the sensing portion of the inner ring 120 along its axis can be accurately detected, improving detection accuracy.

[0047] like Figure 1 As shown, the displacement compensation mechanism to be detected is installed vertically, and the hydraulic cylinder 150 applies force to the support plate 170 in the horizontal direction. This can simulate the actual force state of the displacement compensation mechanism, eliminate the influence of the gravity of the displacement compensation mechanism itself on the detection, and improve the detection accuracy.

[0048] The detection device also includes a controller. The controller is electrically connected to the two hydraulic cylinders 150 to control their operation. The controller is also electrically connected to the two tension and compression sensors 140 to collect second information in real time. This second information indicates the magnitude and direction of the force exerted by the hydraulic cylinder shaft 151 on the tension and compression sensor holder 220. The controller is also electrically connected to the two displacement sensors 160 to collect first information in real time. This first information indicates the direction and distance of movement of the sensing portion of the inner ring 120 along the axis of the inner ring 120.

[0049] When inner ring 120 moves along its axis, the controller can determine the direction and distance of movement of inner ring 120 based on the first information. The controller can also determine the axial stiffness of inner ring 120 based on the first and second information. The method for determining the axial stiffness of inner ring 120 based on the first and second information is substantially the same as existing methods for determining stiffness and will not be further described here.

[0050] When inner ring 120 oscillates relative to a plane perpendicular to the axis of inner ring 120, the controller can determine the oscillation direction and angle of inner ring 120 based on the first information. The controller can also determine the angular stiffness of inner ring 120 based on the first and second information. The method for determining the angular stiffness of inner ring 120 based on the first and second information is substantially the same as existing methods for determining stiffness and is not further described here.

[0051] In this embodiment, the detection device can collect first information indicating the movement of the inner ring 120 through the displacement sensor 160 and collect second information indicating the force through the tension and compression sensor 140, with multiple detection functions and high detection efficiency.

[0052] In this embodiment, the detection device may further include a display. The display may be a display screen (e.g., a liquid crystal display). The display is electrically connected to the controller. In this way, the controller can control the display to display the aforementioned first information, second information, axial stiffness, and angular stiffness. The controller itself is provided with a storage module. The storage module can record and store the aforementioned first information, second information, axial stiffness, and angular stiffness.

[0053] It can be understood that in other embodiments, the displacement compensation mechanism to be detected can also be other structures. For example, the displacement compensation mechanism to be detected includes a first piece and a second piece, and one of the first piece and the second piece is arranged to be movable relative to the other (movable along the axial direction of the first piece or swinging relative to a plane perpendicular to the axis of the first piece). At this time, the detection device fixes the second piece through the first bracket. The detection device is connected to the first part of the first piece through a connector hole of the transition connector. The detection device is connected to the second part of the first piece through another connector hole of the transition connector. Wherein, in the radial direction of the first piece, the first part and the second part of the first piece are symmetrically arranged with respect to the center of the first piece.

[0054] The present invention has been described through the above-described embodiments. However, it should be understood that the above-described embodiments are for illustrative and illustrative purposes only and are not intended to limit the present invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments and that various variations and modifications may be made based on the teachings of the present invention, all of which fall within the scope of the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

[0055] The processes described in all the preferred embodiments above are merely examples. Unless adverse effects occur, various processing operations can be performed in a different order from the above process. The order of the steps in the above process can also be increased, combined, or deleted according to actual needs.

[0056] In addition, the commands, command numbers, and data items described in all the preferred embodiments are merely examples, and thus these commands, command numbers, and data items may be arranged in any manner as long as the same functionality is achieved. The units of the terminal of each preferred embodiment may also be integrated, further divided, or deleted according to actual needs.

Claims

1. A detection device, characterized in that: The detection device is used to detect a displacement compensation mechanism, wherein the displacement compensation mechanism includes an outer ring and an inner ring connected to the outer ring, wherein one of the outer ring and the inner ring is movably arranged relative to the other, and the detection device includes: a first bracket, the first bracket being used to fix the outer ring via a plurality of circumferentially spaced bolts; a tension and compression sensor connected to the inner ring; a hydraulic cylinder, wherein a hydraulic cylinder shaft of the hydraulic cylinder is connected to the tension and compression sensor, and the hydraulic cylinder is used to apply a force to the tension and compression sensor to move the inner ring; a displacement sensor, wherein the displacement sensor is arranged on the first bracket; a controller electrically connected to the displacement sensor and the tension and compression sensor to collect first information representing the movement of the inner ring through the displacement sensor and second information representing the applied force through the tension and compression sensor; Wherein, in the radial direction of the inner ring, the hydraulic cylinder shaft of the hydraulic cylinder and the center of the inner ring are spaced apart, and the hydraulic cylinder shaft is extended and retracted along the axial direction of the outer ring to make the inner ring swing or translate.

2. The detection device according to claim 1, wherein The controller determines the axial stiffness of the displacement compensation mechanism according to the first information and the second information.

3. The detection device according to claim 1, wherein There is one hydraulic cylinder, and the force causes the inner ring to swing relative to a plane perpendicular to the axis of the inner ring. The first information represents the movement of the non-center position of the inner ring along its axial direction. The controller determines the angular stiffness of the displacement compensation mechanism through the first information and the second information.

4. The detection device according to claim 3, wherein The size of the interval is adjustable.

5. The detection device according to claim 1, wherein There are two hydraulic cylinders.

6. The detection device according to claim 5, characterized in that The hydraulic cylinder shafts of the two hydraulic cylinders are respectively located at two ends of the inner ring in the radial direction.

7. The detection device according to claim 6, characterized in that In the radial direction of the inner ring, the hydraulic cylinder axes of the two hydraulic cylinders are symmetrically arranged with respect to the axis of the inner ring.

8. The detection device according to claim 5, wherein: The detection device also includes a support plate, a washer and a transition connector. The hydraulic cylinder shaft of one of the hydraulic cylinders is connected to one end of the support plate, and the hydraulic shaft of the other hydraulic cylinder is connected to the other end of the support plate. The support plate is provided with a plurality of support plate mounting holes symmetrically spaced along the length direction of the support plate. The support plate passes through the support plate mounting holes, and the washer and the transition connector are connected to the inner ring.

9. The detection device according to claim 5, wherein: The forces of the two hydraulic cylinders act in the same direction.

10. The detection device according to claim 5, wherein: The forces of the two hydraulic cylinders act in opposite directions.

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