Flexible fixing structure for electric cylinder of linear electric cylinder test device

Abstract

The utility model discloses an electric cylinder flexible fixing structure of a linear electric cylinder test device, which comprises a linear electric cylinder, a bottom plate fixed on the bottom surface of the linear electric cylinder, a pair of supporting plates respectively arranged on two sides of the linear electric cylinder, and a connecting plate positioned between the pair of supporting plates, the bottom plate and the connecting plate are connected through a left-right rotating mechanism so that the linear electric cylinder can rotate left and right and be locked, one ends of the supporting plates are used for being fixed to a support, and the other ends of the supporting plates are connected with the two sides of the connecting plate through an up-down rotating mechanism so that the linear electric cylinder can rotate up and down and be locked. Through the up-down rotating mechanism capable of enabling the linear electric cylinder to rotate up and down and to be locked and the left-right rotating mechanism capable of enabling the linear electric cylinder to rotate left and right and to be locked, two-way angle deflection can be achieved to adapt to tiny deflection or swing of a workpiece so as to meet the requirement for flexible fixing, and flexibility and adaptability are improved; and moreover, after being rotated in place, the clamping device can be locked to be converted into a rigid fixed structure, so that the rigid structure test can be met.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a flexible fixing structure for a linear electric cylinder testing device. Background Technology

[0002] In the fields of industrial automation and precision machinery, linear electric cylinders are widely used as important actuators in various testing and production equipment. Linear electric cylinders convert electrical energy into linear motion, achieving precise position control. However, in practical applications, due to the complexity of the working environment and the diversity of the workpieces being tested, linear electric cylinders often need to achieve a precise and flexible connection with the workpiece. This requires the cylinder's fixed structure to not only ensure sufficient rigidity to guarantee accurate linear motion, but also to possess a certain degree of flexibility to accommodate minor offsets or oscillations of the workpiece.

[0003] In existing technologies, linear electric cylinders typically employ rigid connections, such as direct fixation to the workpiece using bolts or clamps. While this rigid connection method ensures the linear movement of the cylinder, it lacks flexibility when flexible fixation is required. To address this issue, researchers and engineers have proposed various flexible fixation structure solutions:

[0004] (1) Universal joint connection: A universal joint is added between the electric cylinder and the workpiece to allow a certain angle of deflection to accommodate the swing of the workpiece. Although the universal joint provides a flexible connection, the multi-axis motion characteristics of the universal joint cause friction during the movement. Long-term use may lead to wear, affecting the accuracy and life of the electric cylinder.

[0005] (2) Flexible fixtures: Using flexible materials or designing special fixture structures, flexible fixtures can be used to fix workpieces in a flexible manner. These fixtures can be adjusted according to the shape and size of the workpiece. However, flexible fixtures usually rely on changes in physical form to adapt to the workpiece, which may require manual adjustment and is not automated enough. Furthermore, the materials may degrade in extreme environments.

[0006] (3) Pneumatic or hydraulic assistance: Flexible fixation is achieved by using a pneumatic or hydraulic system to assist the electric cylinder in fixing. This method can absorb minor workpiece displacements to a certain extent, but pneumatic or hydraulic systems are usually more complex than purely mechanical systems, requiring additional components such as compressors, pumps, valves, pipelines, and control units, and the cost is usually higher than that of simple mechanical fixing devices.

[0007] (4) Intelligent Control System Integration: Sensors and control systems are integrated into the electric cylinder system to monitor the workpiece position and the electric cylinder's motion status in real time. Intelligent algorithms adjust the electric cylinder's trajectory to adapt to workpiece deviations. This method achieves a high degree of automation and precise control, but it is technically challenging and requires sophisticated system integration. Utility Model Content

[0008] The purpose of this utility model is to provide a linear electric cylinder test device with a flexible fixing structure that is simple in structure, low in cost, easy to maintain, improves work efficiency, and can adapt to diverse tests.

[0009] The purpose of this utility model is achieved through the following technical measures: a flexible fixing structure for a linear electric cylinder testing device, characterized in that it includes a linear electric cylinder, a base plate fixed on the bottom surface of the linear electric cylinder, a pair of support plates respectively disposed on both sides of the linear electric cylinder, and a connecting plate located between the pair of support plates. The base plate and the connecting plate are connected by a left-right rotation mechanism so that the linear electric cylinder can rotate left and right and be locked. One end of the pair of support plates is used to fix it on a bracket, and the other end is connected to both sides of the connecting plate by an up-down rotation mechanism so that the linear electric cylinder can rotate up and down and be locked.

[0010] This invention utilizes a vertical rotation mechanism that allows the linear electric cylinder to rotate up and down and lock, and a horizontal rotation mechanism that allows the linear electric cylinder to rotate left and right and lock. This not only enables bidirectional angular deflection to accommodate minor workpiece offsets or swaying, thus meeting the requirements for flexible fixation and improving flexibility and adaptability, but also enhances work efficiency. Furthermore, after rotation to the correct position, it can be locked into a rigid fixation structure to meet the requirements of rigid structure testing. This invention can switch between flexible and rigid fixation according to the needs of testing conditions, increasing its flexibility and adapting to different testing requirements. In addition, this invention has a simple structure, low cost, is easy to maintain, and is highly practical, making it suitable for widespread promotion and use.

[0011] The left and right rotating mechanism of this utility model includes a rotating shaft and a bearing mounted on the rotating shaft. The rotating shaft is fixed on the lower surface of the base plate, while the bearing is fixed on the connecting plate.

[0012] The up-and-down rotating mechanism of this utility model includes a hinge shaft, a hinge hole, and a locking block. The connecting plate is "U"-shaped, with hinge shafts on both sides. The support plate has a notch-shaped hinge hole. The lower surface of the locking block has an arc surface that adapts to the hinge shaft. The locking block is fixed to the support plate by a locking bolt and is located at the hinge hole. The hinge shaft rotates in the hinge hole to make the linear electric cylinder rotate up and down. The locking block can be pressed by tightening the locking bolt to lock the linear electric cylinder after it has rotated into place.

[0013] This utility model has an arc-shaped hole on one of the two plates, the base plate and the connecting plate, and a locking bolt on the other plate. The locking bolt is located in the arc-shaped hole and can slide along the arc-shaped hole when the linear electric cylinder rotates left and right. The locking bolt can be tightened on the arc-shaped hole by screwing in a nut so that the linear electric cylinder can be locked after rotating into place.

[0014] This invention provides a high-precision force sensor on the push rod of the linear electric cylinder for real-time force data acquisition.

[0015] The support plate of this utility model is fixed to the bracket by a U-shaped frame, and the ends of the pair of support plates are respectively fixed to the two sides of the U-shaped frame.

[0016] The support plate described in this utility model is a hollow plate with reinforcing rods on it.

[0017] Compared with the prior art, the present invention has the following significant advantages:

[0018] (1) This utility model, through a vertical rotation mechanism that enables the linear electric cylinder to rotate up and down and lock, and a horizontal rotation mechanism that enables the linear electric cylinder to rotate left and right and lock, can not only achieve bidirectional angle deflection to adapt to the slight offset or sway of the workpiece and thus meet the requirements of flexible fixation, improving flexibility and adaptability, but also can lock it into a rigid fixation structure after rotation to meet the requirements of rigid structure testing. This utility model can switch between flexible fixation and rigid fixation according to the needs of testing conditions, increasing the flexibility of use and adapting to different testing requirements.

[0019] (2) This utility model has a simple structure, low cost, is easy to maintain, improves work efficiency, and is highly practical. It can be widely promoted and used. Attached Figure Description

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model installed on the bracket;

[0022] Figure 2 This is an exploded view of the structure of this utility model;

[0023] Figure 3 This is one of the three-dimensional structural schematic diagrams of this utility model;

[0024] Figure 4 This is the second three-dimensional structural schematic diagram of this utility model.

[0025] In the diagram: 1-Linear electric cylinder, 2-Servo motor, 3-Base plate, 4-Support plate, 5-Connecting plate, 6-Bracket, 7-U-shaped frame, 8-Rotating shaft, 9-Bearing, 10-Arc-shaped hole, 11-Hinge shaft, 12-Hinge hole, 13-Locking pressure block, 14-Reinforcing rod. Detailed Implementation

[0026] The present invention will be further described below through specific embodiments, but this is not a limitation of the present invention. Those skilled in the art can make various modifications or improvements based on the basic idea of ​​the present invention, but as long as they do not depart from the basic idea of ​​the present invention, they are all within the protection scope of the present invention.

[0027] like Figures 1-4 As shown, this utility model discloses a flexible fixing structure for a linear electric cylinder testing device, comprising a linear electric cylinder 1 with a servo motor 2, a base plate 3 fixed to the bottom surface of the linear electric cylinder 1, a pair of support plates 4 respectively disposed on both sides of the linear electric cylinder 1, and a connecting plate 5 located between the pair of support plates 4. The base plate 3 and the connecting plate 5 are connected by a left-right rotation mechanism, allowing the linear electric cylinder 1 to rotate left and right and be locked. The support plate 4 is a hollow plate with a reinforcing rod 14 on it. One end of the pair of support plates 4 is fixed to the bracket 6 by a U-shaped frame 7 (the ends of the pair of support plates 4 are respectively fixed to the two sides of the U-shaped frame 7, and the U-shaped frame 7 is connected to the bracket 6). The other end of the support plate 4 is connected to the two sides of the connecting plate 5 by an up-down rotation mechanism, allowing the linear electric cylinder 1 to rotate up and down and be locked.

[0028] In this embodiment, the left-right rotation mechanism includes a rotating shaft 8 and a bearing 9 mounted on the rotating shaft 8. The rotating shaft 8 is fixed to the lower surface of the base plate 3, while the bearing 9 is fixed to the connecting plate 5. The base plate 3 has a pair of protrusions with arc-shaped holes 10 on both sides. A locking bolt is provided on the upper surface of the connecting plate 5. The locking bolt is located in the arc-shaped hole 10 and can slide along the arc-shaped hole 10 when the linear electric cylinder 1 rotates left and right. The locking bolt can be tightened onto the arc-shaped hole 10 by screwing in a nut, thus locking the linear electric cylinder 1 after it has rotated to its position. In other embodiments, the arc-shaped hole can be opened on the connecting plate, while the locking bolt can be located on the base plate. The function of the left-right rotation mechanism is to allow the electric cylinder to have angle adjustment capability in the left-right direction as well. With the assistance of the mechanical bearing, the left-right rotation mechanism allows the electric cylinder to make smooth angle adjustments in the left-right direction. When the workpiece has horizontal movement deviation, this structure can absorb these changes and maintain a stable connection between the electric cylinder and the workpiece.

[0029] In this embodiment, the up-and-down rotation mechanism includes a hinge shaft 11, a hinge hole 12, and a locking block 13. The connecting plate 5 is U-shaped, with hinge shafts 11 on both sides. The support plate 4 has a notch-shaped hinge hole 12. The lower surface of the locking block 13 has an arc surface adapted to the hinge shaft 11. The locking block 13 is fixed to the support plate 4 by locking bolts and is located at the hinge hole 12. The hinge shaft 11 rotates in the hinge hole 12 to make the linear electric cylinder 1 rotate up and down. The locking block 13 can be pressed by tightening the locking bolts to lock the linear electric cylinder in place. This invention can ensure that the electric cylinder rotates flexibly and maintains adaptive contact with the workpiece. When the workpiece being tested wobbles in the up-and-down direction, the electric cylinder automatically adjusts its angle through the up-and-down rotation mechanism to ensure smooth contact between the electric cylinder and the workpiece, while avoiding mechanical damage caused by friction or stress concentration.

[0030] The servo control unit is used to precisely control the linear motion of the electric cylinder. This unit can control the trajectory of the electric cylinder according to preset parameters (such as speed, displacement, acceleration, etc.).

[0031] A high-precision force sensor is installed on the push rod of the linear electric cylinder 1 for real-time force data acquisition. The force sensor is mounted in the cylinder's movement path and is responsible for collecting the force values ​​experienced by the cylinder during operation. The force sensor can accurately detect the force applied to the electrician during testing and feed the data back to the control system for analysis of the cylinder's mechanical characteristics, such as load, fatigue, and durability. Through high-precision measurement technology, the high-precision force sensor can accurately capture the force changes of the linear electric cylinder during testing, providing accurate data support for data analysis and processing, and improving the accuracy and reliability of the test.

[0032] This invention features a flexible adjustment structure with both vertical and horizontal rotation capabilities: the electric cylinder's vertical and horizontal rotation mechanisms achieve adaptive angle adjustment to accommodate the swaying of the workpiece being tested. The flexible design of the rotation mechanism ensures smooth contact between the electric cylinder and the workpiece at all times, regardless of the workpiece's dynamic motion. Simultaneously, the combined use of the vertical and horizontal rotation mechanisms allows the electric cylinder to rotate freely, ensuring its flexibility.

[0033] This invention features a mechanism for switching between flexible and rigid modes: it can freely switch between these modes. In flexible testing, the rotating mechanism remains unlocked, and the electric cylinder can adapt to various workpiece motions through free adjustment in the up-down and left-right directions. In rigid testing, the rotating mechanism's locking device locks it, preventing any angular deflection and ensuring the electric cylinder can only move along a predetermined straight line. Through simple locking or unlocking operations, the electric cylinder can quickly switch between flexible and rigid modes.

[0034] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A flexible fixing structure for a linear electric cylinder testing device, characterized in that: It includes a linear electric cylinder, a base plate fixed to the bottom surface of the linear electric cylinder, a pair of support plates respectively disposed on both sides of the linear electric cylinder, and a connecting plate located between the pair of support plates. The base plate and the connecting plate are connected by a left-right rotation mechanism so that the linear electric cylinder can rotate left and right and be locked. One end of the pair of support plates is used to fix it on the bracket, and the other end is connected to both sides of the connecting plate by an up-down rotation mechanism so that the linear electric cylinder can rotate up and down and be locked.

2. The flexible fixing structure of the linear electric cylinder testing device according to claim 1, characterized in that: The left and right rotation mechanism includes a rotating shaft and a bearing mounted on the rotating shaft. The rotating shaft is fixed to the lower surface of the base plate, while the bearing is fixed to the connecting plate.

3. The flexible fixing structure of the linear electric cylinder testing device according to claim 2, characterized in that: An arc-shaped hole is provided on one of the two plates, the base plate and the connecting plate, and a locking bolt is provided on the other plate. The locking bolt is located in the arc-shaped hole and can slide along the arc-shaped hole when the linear electric cylinder rotates left and right. The locking bolt can be tightened on the arc-shaped hole by screwing in a nut so that the linear electric cylinder can be locked after rotating into position.

4. The flexible fixing structure of the linear electric cylinder testing device according to claim 3, characterized in that: The up-and-down rotating mechanism includes a hinge shaft, a hinge hole, and a locking block. The connecting plate is "U"-shaped, with hinge shafts on both sides. The support plate has a notch-shaped hinge hole. The lower surface of the locking block has an arc surface that adapts to the hinge shaft. The locking block is fixed to the support plate by a locking bolt and is located at the hinge hole. The hinge shaft rotates in the hinge hole to make the linear electric cylinder rotate up and down. The locking block can be pressed by tightening the locking bolt to lock the linear electric cylinder in place.

5. The flexible fixing structure of the linear electric cylinder testing device according to claim 4, characterized in that: The support plate is fixed to the bracket by a U-shaped frame, and the ends of the support plates are respectively fixed to the two sides of the U-shaped frame.

6. The flexible fixing structure of the linear electric cylinder testing device according to claim 5, characterized in that: The support plate is a hollow plate with reinforcing rods on it.

7. The flexible fixing structure of the linear electric cylinder testing device according to claim 6, characterized in that: A high-precision force sensor for real-time force data acquisition is installed on the push rod of the linear electric cylinder.

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