Rigidity test loading device

Abstract

The utility model discloses a rigidity test loading device, which belongs to the technical field of mechanical measuring instruments and equipment and comprises a working platform, a clamping mechanism, a loading mechanism and a sliding mechanism. A clamping mechanism and a slidable sliding mechanism are arranged on the working platform; a loading mechanism is arranged on the sliding mechanism; and the loading mechanism slides on the working platform through the sliding mechanism and applies force to a plurality of positions of the component fixed on the clamping mechanism. According to the rigidity test loading device disclosed by the utility model, loading tests on different loading positions of a part are realized, the actual stress state of the part is comprehensively reflected, the comprehensiveness and the test efficiency of the test are improved, and a solid foundation is provided for subsequently and comprehensively evaluating the static rigidity characteristics of the part under a plurality of loading points.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical measuring instruments and equipment, and particularly relates to a stiffness test loading device. Background Art

[0002] In the fields of engineering and materials science, the performance testing of various components is crucial. Among them, the static stiffness test is one of the key links to evaluate the mechanical properties of components. The core of the static stiffness test is to calculate the stiffness of the component by applying an external force and measuring the corresponding deformation. The stiffness value is an important parameter to measure the mechanical properties of the component, which can reflect the anti-deformation ability and stability of the component under actual working conditions. Therefore, the accuracy of the static stiffness test is crucial for ensuring the rationality of component design and the reliability of use, and has a profound impact on product R & D, quality control and the reliability of engineering applications.

[0003] In the static stiffness test, as a key device, the force loading method and its accuracy of the stiffness test loading device directly affect the accuracy of the static stiffness test value of the measured component, and even determine whether the test result can truthfully reflect the stress state of the component under actual working conditions. If problems such as force value fluctuation, uneven loading or inaccurate loading position occur during the loading process of the loading device, the test result will deviate from the actual value and cannot truly reflect the mechanical properties of the component. At present, the common stiffness test loading devices on the market are mainly single-point loading devices, that is, applying force and measuring deformation at a fixed position. Although this device has a simple structure and is easy to operate, it has certain limitations in actual application. The single-point loading device can only apply force at one position and cannot load the component at multiple positions. In actual engineering, components often need to bear loads at multiple positions. When facing complex components that require multi-loading point tests, the single-point loading method cannot automatically perform multi-position loading, and testers need to manually adjust the loading position one by one, which not only consumes a lot of time and is inefficient, but also it is very difficult to ensure that the loading conditions at each loading point are exactly the same, seriously affecting the accuracy and reliability of the test results.

[0004] In summary, the existing single-point loading devices have many limitations in the static stiffness test and cannot meet the requirements of multi-position loading and high-precision testing. Therefore, it is necessary to design a stiffness test loading device to apply forces simultaneously or sequentially at multiple positions and ensure the smoothness, balance and accuracy of the loading process, which provides strong support for improving product quality and performance and also promotes the development of the engineering technology field. Content of the Utility Model

[0005] The object of the present utility model is to provide a stiffness test loading device for the above-mentioned deficiencies, which can realize the loading test of components at different loading positions, comprehensively reflect the actual stress state of the components, improve the comprehensiveness and efficiency of the test, and provide a solid foundation for comprehensively evaluating the static stiffness characteristics of the components at multiple loading points. To achieve the above object, the present utility model provides the following technical solutions:

[0006] A stiffness test loading device, comprising a working platform, a clamping mechanism, a loading mechanism and a sliding mechanism; a clamping mechanism and a slidable sliding mechanism are provided on the working platform; a loading mechanism is provided on the sliding mechanism; the loading mechanism slides on the working platform through the sliding mechanism to apply forces to multiple positions of a component fixed on the clamping mechanism.

[0007] Further, the sliding mechanism includes a first sliding component and a second sliding component; the first sliding component is arranged on the working platform and slides relative to the working platform in a first direction; the first direction is parallel to the length direction of the working platform; the second sliding component is arranged on the first sliding component and slides relative to the working platform in a second direction; the first direction is parallel to the width direction of the working platform; the loading mechanism is provided on the second sliding component.

[0008] Further, the first sliding component includes a first slide rail and a first moving bracket; the first slide rail is arranged on the working platform in the first direction; a slidable first moving bracket is arranged on the first slide rail; the second sliding component is arranged on the first moving bracket.

[0009] Further, the first sliding component further includes a gear, a rack, a speed reducer and a first driving unit; a long strip bump is provided on the working platform; a rack is provided on the side wall of the long strip bump; a speed reducer is provided at the bottom of the first moving bracket; a gear meshing with the rack is provided on the rotating shaft of the speed reducer; the first driving unit is used to drive the speed reducer to work.

[0010] Further, the second sliding component includes a second slide rail and a second moving bracket; the second slide rail is arranged on the first moving bracket in the second direction; a slidable second moving bracket is arranged on the second slide rail; the loading mechanism is provided on the second moving bracket.

[0011] Further, the second sliding component further includes a ball screw, a screw seat, a screw nut and a second driving unit; the ball screw is arranged on the second moving bracket in the second direction through the screw seat; a screw nut is sleeved on the ball screw; the screw nut is fixed at the bottom of the second moving bracket; the second driving unit is used to drive the ball screw to rotate.

[0012] Further, the loading mechanism includes a servo electric cylinder; a servo electric cylinder is provided on the second moving bracket; and a force sensor is provided at one end of the piston rod of the servo electric cylinder.

[0013] Further, a plurality of threaded holes with different diameters are provided on the clamping mechanism.

[0014] Further, it further includes an electric control cabinet; the electric control cabinet is arranged on one side of the working platform and is used to control the operation of the entire loading device.

[0015] The beneficial effects of the present utility model are as follows:

[0016] The present utility model discloses a stiffness test loading device, which includes a working platform, a clamping mechanism, a loading mechanism and a sliding mechanism; a clamping mechanism and a slidable sliding mechanism are provided on the working platform; a loading mechanism is provided on the sliding mechanism; the loading mechanism slides on the working platform through the sliding mechanism to apply forces to multiple positions of the component fixed on the clamping mechanism. The stiffness test loading device of the present utility model realizes the loading test of different loading positions on the component, comprehensively reflects the actual stress state of the component, improves the comprehensiveness and test efficiency of the test, and provides a solid foundation for comprehensively evaluating the static stiffness characteristics of the component under multiple loading points subsequently. Description of the Drawings

[0017] Figure 1 It is a three-dimensional structure schematic diagram of the stiffness test loading device of the present utility model;

[0018] Figure 2 The front view of the stiffness test loading device of the present utility model;

[0019] Figure 3 The right view of the stiffness test loading device of the present utility model;

[0020] Figure 4 The top view of the stiffness test loading device of the present utility model;

[0021] Figure 5 is Figure 1 The enlarged structure schematic diagram at A in

[0022] Figure 6 is Figure 4 The enlarged structure schematic diagram at B in

[0023] Figure 7 is Figure 2 The sectional view in the C-C direction in

[0024] In the attached drawings: 1 - working platform, 2 - clamping mechanism, 3 - loading mechanism, 31 - servo electric cylinder, 32 - force sensor, 4 - sliding mechanism, 5 - first sliding assembly, 51 - first slide rail, 52 - first moving bracket, 53 - gear, 54 - rack, 55 - speed reducer, 56 - first driving unit, 57 - long convex block, 6 - second sliding assembly, 61 - second slide rail, 62 - second moving bracket, 63 - ball screw, 64 - screw base, 65 - screw nut, 66 - second driving unit, 7 - electrical control cabinet. Detailed implementation manners

[0025] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the attached drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be fully conveyed to those skilled in the art.

[0026] It should be understood that the terms used herein are for the purpose of describing specific exemplary embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" as used herein may also include the plural forms. The terms "comprising", "including", "containing" and "having" are inclusive and thus specify the presence of the stated features, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components and / or combinations thereof. The method steps, processes and operations described herein are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of performance is explicitly stated. It should also be understood that additional or alternative steps may be used.

[0027] Although the terms first, second, third, etc. may be used herein to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer or section from another. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply an order or sequence when used herein. Therefore, the first element, component, region, layer or section discussed below may be referred to as the second element, component, region, layer or section without departing from the teachings of the exemplary embodiments.

[0028] For ease of description, spatial relative relationship terms may be used in the text to describe the relationship of one element or feature shown in the figure with respect to another element or feature. These relative relationship terms are, for example, "inner", "outer", "inner side", "outer side", "below", "beneath", "above", "upper", etc. The meaning of such spatial relative relationship terms includes different orientations of the device during use or operation other than the orientations depicted in the figure. For example, if the device in the figure is flipped, an element described as "below" or "beneath" other elements or features will then be oriented as "above" or "upper" other elements or features. Thus, the example term "below" can include both upper and lower orientations. The device may be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used in the text are interpreted accordingly.

[0029] In this application, the definitions of the respective directions are as follows:

[0030] The first direction is parallel to the length direction of the working platform, i.e., Figure 2 the X direction in

[0031] The second direction is parallel to the width direction of the working platform, i.e., Figure 3 the Y direction in

[0032] Embodiment 1

[0033] See Appendix Figures 1 to 7 ... The stiffness test loading device of the present utility model includes a working platform 1, a clamping mechanism 2, a loading mechanism 3, and a sliding mechanism 4. The clamping mechanism 2 and the sliding mechanism 4 are provided on the working platform 1. As shown in Appendix Figure 1 ..., the working platform 1 can be set to an L shape. The sliding mechanism 4 is provided in the horizontal direction of the working platform 1, and the clamping mechanism 2 is provided in the vertical direction of the working platform 1. A number of threaded holes with different diameters are machined on the clamping mechanism 2 to adapt to the clamping of different fixtures for fixation. The sliding mechanism 4 can slide on the working platform 1, and the loading mechanism 3 is provided on the sliding mechanism 4. The loading mechanism 3 can slide on the working platform 1 to any position on the working platform 1 along with the sliding mechanism 4. The fixture for the component to be loaded is installed on the clamping mechanism 2, and then the loading component is installed on the fixture, with the component facing the loading mechanism 3. By moving the sliding mechanism 4 on the working platform 1 to drive the loading mechanism 3 to any position on the working platform 1, loading at different positions of the component can be achieved. The stiffness test loading device of the present utility model realizes the loading test of the component at different loading positions, comprehensively reflects the actual stress state of the component, improves the comprehensiveness and efficiency of the test, and provides a solid foundation for comprehensively evaluating the static stiffness characteristics of the component at multiple loading points subsequently.

[0034] Specifically, the sliding mechanism 4 includes a first sliding component 5 and a second sliding component 6. The first sliding component 5 is arranged on the working platform 1, and the first sliding component 5 can slide relative to the working platform 1 in the first direction (i.e., Figure 2 the X direction in Figure 3 ); the second sliding component 6 is arranged on the first sliding component 5, and the second sliding component 6 can slide relative to the working platform 1 in the second direction (i.e., Figure 3 the Y direction in Figure 3 ). The loading mechanism 3 is arranged on the second sliding component 6. It can be seen that the loading mechanism 3 can slide to any position on the working platform 1 as the first sliding component 5 and the second sliding component 6 slide.

[0035] Specifically, the first sliding component 5 includes a first slide rail 51, a first moving bracket 52, a gear 53, a rack 54, a speed reducer 55, and a first driving unit 56. The first slide rail 51 is arranged on the working platform 1 in the first direction. As shown in the attached Figure 4 figure, a slidable first moving bracket 52 is arranged on the first slide rail 51, and a groove cooperating with the first slide rail 51 can be arranged at the bottom of the first moving bracket 52. A long strip bump 57 is arranged on the working platform 1 in the first direction, and a rack 54 is arranged on one side wall of the long strip bump 57. As shown in the attached Figure 1 figure and the attached Figure 5 figure, a speed reducer 55 is arranged at the position corresponding to the rack 54 at the bottom of the first moving bracket 52. A gear 53 meshing with the rack 54 is arranged on the rotating shaft of the speed reducer 55. The first driving unit 56 can be a servo motor electrically connected to the speed reducer 55. The first driving unit 56 drives the speed reducer 55 to operate, drives the gear 53 to rotate, and finally makes the first moving bracket 52 move relative to the working platform 1 in the first direction on the working platform 1 under the guiding action of the first slide rail 51.

[0036] Specifically, the second sliding component 6 includes a second slide rail 61, a second moving bracket 62, a ball screw 63, a screw seat 64, a screw nut 65, and a second driving unit 66. The second slide rail 61 is arranged on the first moving bracket 52 in the second direction (i.e., Figure 3 the Y direction in Figure 3 ). As shown in the attached Figure 6 figure, a slidable second moving bracket 62 is arranged on the second slide rail 61. Similarly, a groove cooperating with the second slide rail 61 can be arranged at the bottom of the second moving bracket 62. A ball screw 63 is further arranged on the first moving bracket 52 in the second direction. The ball screw 63 is arranged on the first moving bracket 52 through the screw seat 64. The ball screw 63 can rotate relative to the screw seat 64. A screw nut 65 is sleeved on the ball screw 63. As shown in the attached Figure 7As shown, when the ball screw 63 rotates, the screw nut 65 can move on the ball screw 63. The screw nut 65 is fixed to the bottom of the second moving bracket 62. When the ball screw 63 rotates, the second moving bracket 62 moves on the ball screw 63 along with the screw nut 65. A second driving unit 66 is provided on one side of the screw base 64. The second driving unit 66 can be a servo motor, and the second driving unit 66 drives the ball screw 63 to rotate.

[0037] Specifically, a loading mechanism 3 is provided on the second moving bracket 62. The loading mechanism 3 is a servo electric cylinder 31. The telescopic rod of the servo electric cylinder 31 faces the component to be loaded. The servo electric cylinder 31 is used to load the component. A force sensor 32 is provided at the end of the telescopic rod of the servo electric cylinder 31. When the servo electric cylinder 31 loads the component, the force sensor 32 is squeezed between the component and the telescopic rod at the same time, so that the force sensor 32 obtains the magnitude of the loading force.

[0038] Specifically, the stiffness test loading device of the present utility model further includes an electric control cabinet 7. The electric control cabinet 7 is electrically connected to the first driving unit 56, the second driving unit 66, the servo electric cylinder 31 and the force sensor 32. The operation of the first driving unit 56, the second driving unit 66, the servo electric cylinder 31 and the force sensor 32 is controlled through the electric control cabinet 7 to realize the automatic control and data acquisition of the loading device.

[0039] All technical features in this embodiment can be freely combined according to actual needs. The above embodiments are only used to illustrate the technical solutions of the present utility model and not to limit. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present utility model, and they should all be covered within the scope of the claims of the present utility model. The technologies, shapes, and structures not described in detail in the present utility model are all well-known technologies.

[0040] The above embodiments are the preferred implementation solutions of the present utility model. In addition, there are other implementation methods. Any obvious replacement without departing from the concept of the technical solution is within the protection scope of the present utility model.

Claims

1. A stiffness test loading device, characterized in that: The invention comprises a working platform (1), a clamping mechanism (2), a loading mechanism (3) and a sliding mechanism (4); the working platform (1) is provided with a clamping mechanism (2) and a slidable sliding mechanism (4); the sliding mechanism (4) is provided with a loading mechanism (3); the loading mechanism (3) slides on the working platform (1) via the sliding mechanism (4) to apply force to multiple positions of a component fixed on the clamping mechanism (2).

2. A stiffness test loading device according to claim 1, characterized in that: The sliding mechanism (4) comprises a first sliding component (5) and a second sliding component (6); the first sliding component (5) is arranged on the working platform (1) and slides relative to the working platform (1) along a first direction; the first direction is parallel to the length direction of the working platform (1); the second sliding component (6) is arranged on the first sliding component (5) and slides relative to the working platform (1) along a second direction; the first direction is parallel to the width direction of the working platform (1); and the second sliding component (6) is provided with a loading mechanism (3).

3. A stiffness test loading device according to claim 2, characterized in that: The first sliding assembly (5) comprises a first sliding rail (51) and a first movable bracket (52); the first sliding rail (51) is provided on the working platform (1) along a first direction; a slidable first movable bracket (52) is provided on the first sliding rail (51); and a second sliding assembly (6) is provided on the first movable bracket (52).

4. A stiffness test loading device according to claim 3, characterized in that: The first sliding assembly (5) further comprises a gear (53), a rack (54), a reducer (55) and a first driving unit (56); a long protrusion (57) is provided on the working platform (1); a rack (54) is provided on the side wall of the long protrusion (57); a reducer (55) is provided at the bottom of the first movable bracket (52); a gear (53) meshing with the rack (54) is provided on the rotating shaft of the reducer (55); and the first driving unit (56) is used to drive the reducer (55) to work.

5. A stiffness test loading device according to claim 3, characterized in that: The second sliding assembly (6) comprises a second sliding rail (61) and a second movable bracket (62); the first movable bracket (52) is provided with a second sliding rail (61) along a second direction; the second sliding rail (61) is provided with a slidable second movable bracket (62); and the second movable bracket (62) is provided with a loading mechanism (3).

6. A stiffness test loading device according to claim 5, characterized in that: The second sliding assembly (6) further comprises a ball screw (63), a screw seat (64), a screw nut (65) and a second driving unit (66); the ball screw (63) is arranged on the second movable bracket (62) along the second direction via the screw seat (64); the screw nut (65) is sleeved on the ball screw (63); the screw nut (65) is fixed to the bottom of the second movable bracket (62); and the second driving unit (66) is used for driving the ball screw (63) to rotate.

7. A stiffness test loading device according to claim 5, characterized in that: The loading mechanism (3) comprises a servo electric cylinder (31); the second movable bracket (62) is provided with the servo electric cylinder (31); and a force sensor (32) is provided at one end of a piston rod of the servo electric cylinder (31).

8. A stiffness test loading device according to claim 1, characterized in that: The clamping mechanism (2) is provided with a plurality of threaded holes with different diameters.

9. A stiffness test loading device according to claim 1, characterized in that: It also includes an electrical control cabinet (7); the electrical control cabinet (7) is arranged on one side of the working platform (1) and is used to control the operation of the entire loading device.

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