Leveling base for test

Abstract

The utility model relates to the technical field of measuring equipment, in particular to a leveling base for test, which comprises an upper base and a lower base, the upper base is configured to move towards the lower base, a plurality of horizontal calibrators are arranged on one surface of the lower base facing the upper base, a plurality of lifting devices are arranged on one surface of the lower base far away from the upper base, and the horizontal calibrators are arranged on the lifting devices. Each lifting device can be independently controlled, sliding grooves are formed in the opposite faces of the upper base and the lower base, a pair of pressing heads is arranged in each sliding groove, and each pressing head can independently slide in the corresponding sliding groove. Therefore, all the pressure heads are in a uniform plane state, test errors caused by height differences of the pressure heads are effectively avoided, and the test precision and the data reliability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring equipment, in particular to a leveling base for testing. Background Art

[0002] During bending, tensile, or fatigue tests on materials, the horizontality of the test platform significantly impacts the accuracy of the test results. To ensure that the specimen does not experience bias during loading, the test platform is typically cleaned and adjusted before testing to ensure the test apparatus is as horizontal as possible. Furthermore, technicians must regularly clean and maintain the test platform to maintain the proper functioning of the test system.

[0003] However, with long-term use of the test base, the indenters on the lower base may not be on the same horizontal plane due to mechanical wear, structural deformation, or foundation settlement. In this case, the specimen is prone to bias during loading, which in turn leads to local stress concentration, abnormal test data, and other problems, seriously affecting the authenticity and repeatability of the test results. Utility Model Content

[0004] The purpose of the present utility model is to overcome the shortcomings of the existing technology that the test platform is affected by its own wear or the external environment during long-term use, resulting in the pressure head of the lower base being unable to be in the same horizontal plane, causing bias during subsequent test loading of the test piece, resulting in abnormal test data, and to provide a leveling base for testing.

[0005] In a first aspect, the present invention provides a leveling base for testing, comprising an upper base and a lower base, wherein the upper base is configured to be movable toward the lower base, a surface of the lower base facing the upper base is provided with a plurality of leveling gauges, and a surface of the lower base facing away from the upper base is provided with a plurality of lifting devices, each of the lifting devices being individually controllable;

[0006] Sliding grooves are provided on the surfaces opposite to the lower base, and a pair of pressing heads are provided in each of the sliding grooves, and each of the pressing heads can slide independently in the corresponding sliding groove.

[0007] The utility model provides a leveling base for testing, which provides a leveling instrument and several lifting devices on the lower base, and can firstly level the entire lower base through the cooperation of the leveling instrument and the lifting device in the initial stage of leveling, so that the lower base is in a horizontal posture; the upper and lower bases are both provided with pressure heads that slide through sliding grooves, and the positions of the pressure heads can be adjusted to realize testing of different positions of the test piece; during long-term use, if some pressure heads on the lower base cannot be in the same plane with other pressure heads due to wear, the utility model can fine-tune the local area of ​​the lower base by adjusting the corresponding lifting devices, so that all pressure heads are in the same plane, effectively avoiding test errors caused by differences in pressure head heights, and improving test accuracy and data reliability.

[0008] Preferably, the lifting device includes an adjusting bolt, one end of which is movably connected to the lower base and the other end of which is connected to a knob.

[0009] The knob structure is convenient for manual operation. Technicians can directly rotate the knob to adjust the height without the need for additional tools, simplifying the operation process.

[0010] Preferably, the pressure head comprises a horizontal plate, one end of the horizontal plate is provided with a vertical plate, and the end of the vertical plate not connected to the horizontal plate is provided with an arc-shaped end.

[0011] The L-shaped structure formed by the horizontal plate and the vertical plate helps to enhance the overall rigidity of the indenter, ensure that it is not easily deformed during loading, and improve the stability of the test. The curved end of the vertical plate makes the transition between the indenter and the specimen smooth, reducing the stress concentration caused by sharp corner loading, thereby reducing local damage to the specimen and improving the reliability of the test results.

[0012] Preferably, the transverse plate is provided with a connecting hole, a limiting bolt is connected in the connecting hole, and the head of the limiting bolt is located in the sliding groove corresponding to the transverse plate;

[0013] The limiting bolt passes through a portion of the transverse plate and is movably connected to the limiting nut.

[0014] By setting a limit bolt and setting the head of the limit bolt in the sliding groove, the connection between the pressure head and its corresponding base is strengthened to prevent the pressure head from falling. Then, by cooperating with the limit nut and the limit bolt, the pressure head can be fixed when the limit nut is tightened.

[0015] Preferably, an indicator mark is provided on the vertical plate.

[0016] Preferably, the upper base and the lower base are both provided with the same scale mark, and the scale mark can cooperate with the indicator mark to display the position of the vertical plate.

[0017] Through the coordination of scale marks and indicator marks, the operator can directly read the specific position of the pressure head vertical plate on the base, which facilitates rapid positioning and adjustment.

[0018] Preferably, the upper base, the lower base and the lifting device body are wear-resistant metal structural parts.

[0019] The wear resistance of the leveling base used for the test in the utility model is improved, and the overall service life of the leveling base is prolonged.

[0020] Preferably, the pressing head, the limiting bolt and the limiting nut body are wear-resistant metal structural parts.

[0021] The wear resistance of the leveling base used for the test in the utility model is improved, and the overall service life of the leveling base is prolonged.

[0022] Preferably, the level calibrator body is a bubble level.

[0023] Preferably, a test system is connected to a surface of the upper base away from the lower base.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The utility model provides a leveling base for testing. By arranging a level calibrator and a plurality of lifting devices on the lower base, the entire lower base can be leveled by the cooperation of the level calibrator and the lifting device at the initial stage of leveling, so that the lower base is in a horizontal posture; the upper and lower bases are both provided with pressure heads that slide through sliding grooves, and the positions of the pressure heads can be adjusted to achieve testing of different positions of the test piece; during long-term use, if some pressure heads on the lower base cannot be in the same plane with other pressure heads due to wear, the utility model can fine-tune the local area of ​​the lower base by adjusting the corresponding lifting devices, so that all pressure heads are in the same plane, effectively avoiding test errors caused by differences in pressure head heights, and improving test accuracy and data reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a front structural diagram of the leveling base used for testing of the utility model;

[0027] Figure 2 A three-dimensional structural diagram of a leveling base for testing of the present utility model;

[0028] Figure 3 For this utility model Figure 2 A magnified view of part A;

[0029] Figure 4 A cross-sectional view of a leveling base for testing of the present utility model;

[0030] Figure 5 It is a structural schematic diagram of the pressure head of the utility model.

[0031] Markings in the figure: 1-upper base; 2-lower base; 3-level calibrator; 4-lifting device; 41-adjusting bolt; 42-knob; 5-sliding slot; 6-pressing head; 61-horizontal plate; 611-connecting hole; 62-vertical plate; 621-arc end; 7-limiting bolt; 8-limiting nut. DETAILED DESCRIPTION

[0032] The present invention will be further described in detail below with reference to specific embodiments. However, this should not be construed as limiting the scope of the present invention to the following embodiments. All technologies implemented based on the present invention fall within the scope of the present invention.

[0033] Unless otherwise specified, in the description of the specific embodiments of the present invention, the terms indicating orientation or positional relationships such as "upper," "lower," "left," "right," "center," "inside," and "outside" are based on the orientation or positional relationships shown in the accompanying drawings, or are the orientation or positional relationships in which the product / device / apparatus of the present invention is placed when it is conventionally used. These terms of orientation or positional relationships are merely for the purpose of facilitating the description of the present invention or simplifying the description of the specific embodiments to facilitate a quick understanding of the solutions by technicians, and do not indicate or imply that a particular device / component / element must have a specific orientation or be constructed and operated in a specific positional relationship. Therefore, they should not be understood as limitations on the present invention.

[0034] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding devices / components / elements are required to be absolutely horizontal or vertical or overhanging or parallel, but may be slightly tilted or have deviations. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. Alternatively, it can be simply understood that the corresponding devices / components / elements are set in directions such as "horizontal", "vertical", "overhanging", and "parallel", and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the solution of the present utility model.

[0035] In addition, the expressions “first”, “second”, “third”, etc. in the terms are merely used to distinguish the description of the same or similar components, and should not be understood as emphasizing or implying the relative importance of specific components.

[0036] In addition, in the description of the embodiments of the present invention, "several", "a plurality", and "a number" represent at least 2. It can be any number such as 2, 3, 4, 5, 6, 7, 8, 9, and even more than 9.

[0037] Furthermore, in the description of the technical solutions of this utility model, unless otherwise expressly specified / defined / restricted, the terms "disposed," "installed," "connected," "connected," "provided with," "laid," and "arranged" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections. They may be welding, riveting, bolting, threading, or other commonly used connection methods in the art. Such connections may be mechanical, electrical, or communication connections; they may be direct connections, indirect connections through an intermediate medium, or internal connections between two components.

[0038] Example 1

[0039] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The illustrated leveling base for testing comprises an upper base 1 and a lower base 2 disposed below the upper base 1. The upper base 1 is movable toward the lower base 2. Sliding grooves 5 are defined on opposing surfaces of the upper base 1 and the lower base 2. A pair of pressing heads 6 are slidably disposed within each sliding groove 5, allowing the pressing heads 6 of the upper base 1 and the pressing heads 6 of the lower base 2 to move within their respective sliding grooves 5.

[0040] The lower base 2 is further provided with a plurality of level calibrators 3 on the side facing the upper base 1, and a plurality of lifting devices 4 are provided on the side of the lower base 2 away from the upper base 1. The cooperation between the level calibrators 3 and the lifting devices 4 can realize the preliminary leveling of the lower base 2. During long-term use, if some of the pressure heads 6 on the lower base 2 cannot be in the same plane with other pressure heads 6 due to wear, the utility model can fine-tune the local area of ​​the lower base 2 by adjusting the corresponding lifting devices 4, so that all the pressure heads 6 are in the same plane, effectively avoiding the test error caused by the height difference of the pressure heads 6, and improving the test accuracy and data reliability.

[0041] Optionally, the lifting devices 4 are arranged at the edge of the lower base 2 and are symmetrically arranged.

[0042] In one or more embodiments, the lifting device 4 includes an adjusting bolt 41 , one end of which is movably connected to the lower base 2 and the other end of which is connected to a knob 42 ;

[0043] Furthermore, the knob 42 is a precision flat knob, and the structure of the knob 42 is convenient for manual operation. The technician can directly rotate the knob 42 to adjust the height without the help of additional tools, thus simplifying the operation process. Figure 4 As shown;

[0044] Optionally, a leveling screw can be used to fine-level the knob.

[0045] In one or more embodiments, the indenter 6 includes a horizontal plate 61, a vertical plate 62 is provided at one end of the horizontal plate 61, and an arc-shaped end 621 is provided at the end of the vertical plate 62 not connected to the horizontal plate 61. The horizontal plate 61 and the vertical plate 62 form an L-shaped structure, which helps to enhance the overall rigidity of the indenter 6, ensure that it is not easily deformed during loading, and improve the test stability. The arc-shaped end 621 of the vertical plate 62 makes the transition between the indenter 6 and the specimen smooth, reduces the stress concentration caused by sharp corner loading, thereby reducing local damage to the specimen and improving the reliability of the test results.

[0046] Furthermore, a connecting hole 611 is provided on the transverse plate 61, and a limiting bolt 7 is connected in the connecting hole 611. The head of the limiting bolt 7 is located in the sliding groove 5 corresponding to the transverse plate 61, and the limiting bolt 7 passes through a part of the transverse plate 61 and is movably connected to the limiting nut 8. The head of the limiting bolt 7 is located in the sliding groove 5, so that the pressure head 6 can slide in the sliding groove 5 through the limiting bolt 7. A limiting nut 8 is set at the part where the limiting bolt 7 passes through the transverse plate 61. By loosening the limiting nut 8, the pressure head 6 can be freely adjusted along the sliding groove 5 in the sliding groove 5. By tightening the nut, quick locking can be achieved, thereby improving positioning efficiency. Figure 4 and Figure 5 shown.

[0047] In one or more embodiments, an indicator mark is provided on the vertical plate 62, and the upper base 1 and the lower base 2 are both provided with the same scale mark. The scale mark can cooperate with the indicator mark to display the position of the vertical plate 62. Through the cooperation of the scale mark and the indicator mark, the operator can directly read the specific position of the vertical plate 62 of the pressure head 6 on the base, which is convenient for rapid positioning and adjustment. Figure 1 and Figure 2 The dotted line on the middle pressure head 6 is as shown in FIG. Figure 1 and Figure 2 shown.

[0048] In one or more embodiments, the upper base 1, the lower base 2 and the lifting device 4 are wear-resistant metal structural parts, and the pressing head 6, the limiting bolt 7 and the limiting nut 8 are also wear-resistant metal structural parts;

[0049] Optionally, the wear-resistant metal structural component is one or more of iron, chromium and tungsten.

[0050] In one or several embodiments, the level calibrator 3 is a bubble level.

[0051] In one or more embodiments, a test system is connected to a surface of the upper base 1 away from the lower base 2 .

[0052] Example 2

[0053] This embodiment 2 is a process of adjusting the lower base based on embodiment 1;

[0054] By controlling the upper base 1 to press downward, the pressure head 6 of the upper base 1 is brought into contact with the pressure head 6 of the lower base 2. The wear of the pressure head 6 on the lower base 2 can be visually seen through the contact between the pressure heads 6 of the upper and lower bases. When it is found that some of the pressure heads 6 on the lower base 2 are worn, resulting in the pressure heads 6 on the lower base 2 not being in the same plane, the lower base 2 is raised and lowered by the lifting device 4. Since the lifting device 4 can be controlled individually, the position corresponding to each pressure head 6 on the lower base 2 can be finely adjusted, so that all the pressure heads 6 can be adjusted to the same plane.

[0055] Furthermore, in the present invention, the height adjustment of the lower base 2 by the lifting device 4 is all at the millimeter level. When the lower base 2 is adjusted from a horizontal state to an inclined state by the lifting device 4, since the height adjustment of the lower base 2 by the lifting device 4 is all at the millimeter level, when the lower base 2 is in an inclined state, the bottom of the lifting device 4 can still maintain most of its contact with the ground or the table, thereby ensuring the stability of the entire leveling base.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A leveling base for testing, characterized in that: The utility model comprises an upper base (1) and a lower base (2), wherein the upper base (1) is configured to be movable toward the lower base (2), a side of the lower base (2) facing the upper base (1) is provided with a plurality of leveling instruments (3), and a side of the lower base (2) away from the upper base (1) is provided with a plurality of lifting devices (4), and each lifting device (4) can be controlled individually; Sliding grooves (5) are provided on the surfaces opposite to the upper base (1) and the lower base (2), and a pair of pressing heads (6) are provided in each of the sliding grooves (5), and each of the pressing heads (6) can slide independently in the corresponding sliding groove (5).

2. A leveling base for testing according to claim 1, characterized in that: The lifting device (4) comprises an adjusting bolt (41), one end of which is movably connected to the lower base (2) and the other end of which is connected to a knob (42).

3. A leveling base for testing according to claim 1, characterized in that: The pressure head (6) comprises a horizontal plate (61), one end of the horizontal plate (61) is provided with a vertical plate (62), and the end of the vertical plate (62) not connected to the horizontal plate (61) is provided with an arc-shaped end (621).

4. A leveling base for testing according to claim 3, characterized in that: The transverse plate (61) is provided with a connecting hole (611), a limiting bolt (7) is connected in the connecting hole (611), and the head of the limiting bolt (7) is located in the sliding groove (5) corresponding to the transverse plate (61); The limiting bolt (7) passes through a portion of the transverse plate (61) and is movably connected to the limiting nut (8).

5. A leveling base for testing according to claim 4, characterized in that: An indicator mark is provided on the vertical plate (62).

6. A leveling base for testing according to claim 5, characterized in that: The upper base (1) and the lower base (2) are both provided with the same scale mark, and the scale mark can cooperate with the indicator mark to display the position of the vertical plate (62).

7. A leveling base for testing according to claim 4, characterized in that: The upper base (1), the lower base (2) and the lifting device (4) body are wear-resistant metal structural parts.

8. A leveling base for testing according to claim 4, characterized in that: The pressing head (6), the limiting bolt (7) and the limiting nut (8) are mainly wear-resistant metal structural parts.

9. A leveling base for testing according to any one of claims 1 to 8, characterized in that: The level calibrator (3) is a bubble level.

10. A leveling base for testing according to claim 9, characterized in that: A test system is connected to a side of the upper base (1) away from the lower base (2).

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