High-precision self-adaptive radial hydraulic loading device

Abstract

The utility model discloses a high accuracy self -adaptation radial hydraulic loading device relates to hydraulic loading equipment technical field, including loading disc, loading block, radial top axle, bush, elastic part and driving part, and the upper end of loading disc is provided with loading block, and the upper end of loading block is provided with radial top axle liftably, and the upper end of radial top axle is provided with bush, and the inside of bush is provided with elastic part, and the upside of bush is provided with driving part, and the output of driving part is connected with elastic part. Through the setting of bush and elastic part, can play a buffering effect, effectively absorbed the impact part in driving part output force, whether it is in driving part start, stop instant, or the pressure fluctuation in loading process, and elastic part can convert the abrupt impact force into the stable force, realized the protection to driving part.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic loading equipment technology, and in particular to a high-precision adaptive radial hydraulic loading device. Background Technology

[0002] Applying accurate and appropriate loads is a crucial step in evaluating the quality and performance of hydraulic cylinders during performance testing. However, existing loading methods have many serious problems.

[0003] The common practice is to directly connect the jack to the hydraulic cylinder. This design allows impact loads to act directly on the hydraulic cylinder. Because the instantaneous force of the impact load is enormous and difficult to control precisely, it can easily cause various types of damage to the hydraulic cylinder. Furthermore, large impacts can cause cracks or even breakage in the cylinder body, especially in areas with minor defects in the cylinder material or stress concentration. Cracks will severely affect the sealing performance and structural strength of the hydraulic cylinder, shortening its service life. Utility Model Content

[0004] The purpose of this invention is to provide a high-precision adaptive radial hydraulic loading device to solve the above-mentioned technical problems.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A high-precision adaptive radial hydraulic loading device includes a loading disc, a loading block, a radial top shaft, a bushing, an elastic element, and a driving element. The loading block is disposed on the upper end of the loading disc, the radial top shaft is disposed on the upper end of the loading block in a vertically detachable manner, the bushing is disposed on the upper end of the radial top shaft, the elastic element is disposed inside the bushing, the driving element is disposed on the upper side of the bushing, and the output end of the driving element is connected to the elastic element.

[0007] Preferably, the system also includes a housing, with the loading disk located at the lower end of the housing.

[0008] As a further preferred embodiment, a hydraulic cylinder support is also included, which is located at the upper end of the housing.

[0009] As a further preferred embodiment, the hydraulic cylinder bracket has a mounting hole in the middle, and the bushing is disposed in the mounting hole.

[0010] As a further preferred embodiment, the driving component is a hydraulic cylinder, which is located at the upper end of the hydraulic cylinder bracket, and the output end of the driving component extends into the mounting hole.

[0011] Preferably, the lower end of the radial top shaft is provided with a spherical surface, and the upper end of the loading block is provided with an arc-shaped concave surface.

[0012] Preferably, a pressure sensor is also included, which is disposed between the loading disk and the loading block; or the pressure sensor is disposed at the upper end of the radial top shaft.

[0013] As a further preferred embodiment, both the spherical surface and the concave surface are provided with a nitriding layer or a chromium plating layer.

[0014] The above technical solution has the following advantages or beneficial effects:

[0015] (1) In this utility model, the bushing and elastic element can play a buffering role and effectively absorb the impact part of the output force of the drive component. Whether it is the moment when the drive component starts or stops, or the pressure fluctuation during the loading process, the elastic element can convert the sudden impact force into a stable force, thus protecting the drive component.

[0016] (2) In this utility model, by setting the spherical surface of the radial top shaft and the upper arc-shaped concave surface of the loading block, it can adapt to the angle deviation and ensure uniform force transmission. Moreover, the cooperation between the spherical surface and the arc-shaped concave surface can achieve automatic compensation of ±2° deviation angle.

[0017] (3) In this utility model, the wear resistance and corrosion resistance of the component are significantly improved by setting the nitriding layer or chromium plating layer on the spherical and concave surfaces. During long-term relative motion and stress process, these wear-resistant layers can effectively reduce the wear of the spherical and concave surfaces and maintain the fitting accuracy between them, thereby ensuring the stability and accuracy of the load force transmission. Attached Figure Description

[0018] Figure 1 This is a cross-sectional schematic diagram of the high-precision adaptive radial hydraulic loading device of this utility model.

[0019] In the diagram: 1. Loading disk; 2. Loading block; 3. Radial top shaft; 4. Bushing; 5. Elastic element; 6. Driving element; 7. Housing; 8. Hydraulic cylinder bracket; 9. Spherical surface; 10. Concave surface; 11. Long bolt; 12. Double-ended stud. Detailed Implementation

[0020] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Figure 1 This is a cross-sectional schematic diagram of the high-precision adaptive radial hydraulic loading device of this utility model. Please refer to... Figure 1The diagram illustrates a preferred embodiment of a high-precision adaptive radial hydraulic loading device, comprising a loading disc 1, a loading block 2, a radial top shaft 3, a bushing 4, an elastic element 5, and a drive element 6. The loading block 2 is mounted on the upper end of the loading disc 1. The radial top shaft 3 is vertically detachable from the upper end of the loading block 2. The bushing 4 is mounted on the upper end of the radial top shaft 3. The elastic element 5 is housed inside the bushing 4. The drive element 6 is mounted on the upper side of the bushing 4, and its output end is connected to the elastic element 5. In this embodiment, the upper surface of the loading disc 1 is tightly fitted to the loading block 2. The bushing 4 is fitted onto the upper end of the radial top shaft 3, and the bushing 4 has a through hole inside. The elastic element 5 is a spring, disposed within the through hole. One end of the elastic element 5 is fixedly connected to the upper end of the radial top shaft 3, and the other end is fixedly connected to the output end of the drive element 6. The output end of the drive element 6 can move within the bushing 4. The inner diameter of the through hole in the middle of the bushing 4 is larger than the outer diameter of the output end of the drive element 6. When the drive component 6 is working, its output force does not act directly on the radial top shaft 3, but is first transmitted to the elastic component 5. The elastic component 5 plays a crucial buffering role, absorbing the impact portion of the output force of the drive component 6 and transforming the abrupt impact load into a relatively stable force, thereby effectively avoiding direct impact damage to the drive component 6 from the reaction force of the radial top shaft 3. During the instantaneous impact force generated when the drive component 6 starts or stops rapidly, the elastic component 5 can store and slowly release this energy through its own elastic deformation, making the force transmitted to the radial top shaft 3 more gentle and stable.

[0024] In this embodiment, the elastic element 5 is installed inside the bushing 4. The bushing 4 can limit the elastic element 5 and prevent the elastic element 5 from bending laterally when compressed.

[0025] Furthermore, as a preferred embodiment, it also includes a housing 7, with the loading disk 1 located at the lower end of the housing 7. See [link to other embodiments]. Figure 1 As shown, the loading block 2 and radial top shaft 3 are both installed inside the housing 7. This arrangement makes the entire loading device compact, reduces space occupation, and also provides a good protective and support environment for the internal components (loading block 2 and radial top shaft 3). See also Figure 1 As shown, an opening is provided at the lower end of the housing 7, and the loading disk 1 is installed in the opening. The upper end of the loading disk 1 is located inside the housing 7, which facilitates the installation of the loading block 2.

[0026] Furthermore, as a preferred embodiment, a hydraulic cylinder bracket 8 is also included, which is located at the upper end of the housing 7. The hydraulic cylinder bracket 8 is mounted on the upper end of the housing 7 and can be connected and fixed to the housing 7 by long bolts 11 and double-ended studs 12, providing stable support for the installation of the drive component 6. The long bolts 11 penetrate the upper end of the housing 7 and are threadedly connected to the lower end of the housing 7.

[0027] Furthermore, in a preferred embodiment, a mounting hole is provided in the middle of the hydraulic cylinder bracket 8, and the bushing 4 is disposed within the mounting hole. The driving component 6 is a hydraulic cylinder, which is located at the upper end of the hydraulic cylinder bracket 8, and its output end extends into the mounting hole. This design ensures that the axes of the driving component 6, the bushing 4, and the elastic component 5 are aligned, enabling accurate and stable transmission of the loading force and avoiding test errors and equipment damage caused by force transmission deviations. For example, if the direction of force transmission deviates during loading, it may cause uneven local stress on the hydraulic cylinder, accelerating component wear and even causing structural damage. This device effectively avoids such problems through precise layout design.

[0028] Furthermore, as a preferred embodiment, the lower end of the radial top shaft 3 is provided with a spherical surface 9, and the upper end of the loading block 2 is provided with an arc-shaped concave surface 10. The spherical surface 9 and the concave surface 10 cooperate with each other. This design not only increases the contact area between them, making the force transmission more uniform and reducing damage to the equipment caused by local stress concentration, but also allows the spherical surface 9 and the concave surface 10 to slide relative to each other during loading. This further adapts to possible minute angle changes during loading, achieving automatic ±2° angle compensation, ensuring that the loading force always acts perpendicularly on the tested equipment, and improving the accuracy and stability of loading. For example, if the axial direction of the radial top shaft 3 changes slightly due to minor deformation during testing, the cooperation between the spherical surface 9 and the concave surface 10 can automatically adjust.

[0029] Furthermore, as a preferred embodiment, a pressure sensor is also included. A pressure sensor is positioned between the loading disk 1 and the loading block 2; or a pressure sensor is positioned at the upper end of the radial top shaft 3. If the pressure sensor is positioned at the upper end of the radial top shaft 3, then the pressure sensor is located at the lower end of the elastic element 5. In this way, the pressure sensor can monitor the magnitude of the loading force in real time and feed the data back to the operator or an external controller. The operator can adjust the output of the drive element 6 in a timely manner based on the data fed back by the pressure sensor, achieving precise control of the loading force. For example, when a specific pressure value loading test needs to be performed on the equipment under test, the operator can fine-tune the drive element 6 based on the feedback from the pressure sensor to ensure that the loading force accurately reaches the target value, improving the accuracy of the test.

[0030] Furthermore, as a preferred embodiment, both the spherical surface 9 and the concave surface 10 are provided with a nitriding layer or a chromium plating layer. The nitriding layer or chromium plating layer has high hardness, high wear resistance, and good corrosion resistance, which can effectively extend the service life of the spherical surface 9 and the concave surface 10, ensuring that the fitting accuracy and force transmission effect between the two are not affected during long-term use, and further improving the reliability and stability of the device.

[0031] In this embodiment, the drive unit 6 and the pressure sensor can be connected to an external controller, which can be a PLC controller or a microcontroller.

[0032] During use, the drive unit 6 generates a thrust, which acts directly on the spring, causing the spring to compress. At this time, the spring transmits the force to the radial top shaft 3, and the radial top shaft 3 pushes the spherical surface 9 to transmit the force to the loading block 2. Then the loading block 2 transmits the force to the loading disk 1, completing the radial recording.

[0033] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-precision adaptive radial hydraulic loading device, characterized in that, The device includes a loading disk, a loading block, a radial top shaft, a bushing, an elastic element, and a driving element. The loading block is disposed at the upper end of the loading disk, the radial top shaft is disposed at the upper end of the loading block, the bushing is disposed at the upper end of the radial top shaft, the elastic element is disposed inside the bushing, the driving element is disposed on the upper side of the bushing, and the output end of the driving element is connected to the elastic element.

2. The high-precision adaptive radial hydraulic loading device as described in claim 1, characterized in that, It also includes a housing, with the loading disk located at the lower end of the housing.

3. The high-precision adaptive radial hydraulic loading device as described in claim 2, characterized in that, It also includes a hydraulic cylinder bracket, which is located at the upper end of the housing.

4. The high-precision adaptive radial hydraulic loading device as described in claim 3, characterized in that, The hydraulic cylinder support has a mounting hole in the middle, and the bushing is disposed in the mounting hole.

5. The high-precision adaptive radial hydraulic loading device as described in claim 4, characterized in that, The driving component is a hydraulic cylinder, which is located at the upper end of the hydraulic cylinder bracket, and the output end of the driving component extends into the mounting hole.

6. The high-precision adaptive radial hydraulic loading device as described in claim 1, characterized in that, The lower end of the radial top shaft is provided with a spherical surface, and the upper end of the loading block is provided with an arc-shaped concave surface.

7. The high-precision adaptive radial hydraulic loading device as described in claim 1, characterized in that, It also includes a pressure sensor, which is disposed between the loading disk and the loading block; or the pressure sensor is disposed at the upper end of the radial top shaft.

8. The high-precision adaptive radial hydraulic loading device as described in claim 6, characterized in that, Both the spherical surface and the concave surface are provided with a nitriding layer or a chromium plating layer.

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