Pit depth measuring device

Abstract

The utility model relates to the technical field of composite materials, in particular to a pit depth measuring device which comprises a fixed table assembly. The multiple straight rod assemblies are arranged on the fixed table assembly at intervals in the circumferential direction of the fixed table assembly, the height of the straight rod assemblies in the vertical direction can be adjusted, and the positions, relative to the fixed table assembly, of the straight rod assemblies can be adjusted; the measuring device is used for measuring the depth of a pit of a flat plate test piece, the measuring device is fixedly arranged on the fixed table assembly, and the position of the measuring device on the fixed table assembly can be adjusted. The device can meet the measurement requirements of different types of flat plate test pieces and different measurement parts, improves the universality, and is simple in structure and convenient to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of composite materials, in particular to a device for measuring the depth of a pit. Background Art

[0002] The test of the residual strength of a composite material after impact is an important method for evaluating the impact resistance and interlaminar mechanical properties of the composite material. The test process generally includes drop hammer impact - pit depth measurement - damage area detection - compression strength test. The maximum pit depth and its distribution after the drop hammer impact are important parameters for evaluating its impact resistance. For flat test pieces made of composite materials, a depth gauge, a three-jaw micrometer or a platform plus a dial indicator are currently commonly used for measurement, and the flat test pieces need to be matched with special placement tooling. After the part to be measured is placed horizontally, the pit depth is measured. Facing flat test pieces of different models and different measurement parts, different specifications of measuring tools need to be configured, resulting in poor versatility of the measuring tools, complex structures, and relatively cumbersome preparation work.

[0003] Therefore, a device for measuring the depth of a pit is needed to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a device for measuring the depth of a pit, which can meet the measurement needs of flat test pieces of different models and different measurement parts, improve the versatility, and has a simple structure and is easy to operate.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A device for measuring the depth of a pit, comprising:

[0007] A fixed table assembly;

[0008] A straight rod assembly, a plurality of groups of the straight rod assemblies are arranged at intervals along the circumferential direction of the fixed table assembly on the fixed table assembly, the height of the straight rod assembly in the vertical direction can be adjusted, and the position of the straight rod assembly relative to the fixed table assembly can be adjusted;

[0009] A measuring device, which is used to measure the depth of a pit of a flat test piece, the measuring device is fixedly arranged on the fixed table assembly, and the position of the measuring device on the fixed table assembly can be adjusted.

[0010] Further, the fixed platform assembly includes a connecting plate, a fixing plate, and two parallel and spaced mounting plates. The mounting plates are disposed on the connecting plate, and the mounting positions of the mounting plates relative to the connecting plate can be adjusted. The straight rod assembly is disposed on the mounting plates, the measuring device is disposed on the fixing plate, the fixing plate is disposed on the connecting plate and located between the two mounting plates, and the mounting position of the fixing plate on the connecting plate can be adjusted.

[0011] Further, a connecting strip hole is formed in the connecting plate along the extending direction of the connecting plate, and a first fastener is inserted through the mounting plate and the connecting strip hole to connect the connecting plate and the mounting plate.

[0012] Further, a mounting strip hole is formed in the mounting plate along the extending direction of the mounting plate, and the first fastener is inserted through the mounting strip hole and the connecting strip hole.

[0013] Further, a fixing strip hole is formed in the fixing plate along the extending direction of the fixing plate, and a second fastener is inserted through the fixing strip hole and the connecting strip hole to connect the fixing plate and the connecting plate.

[0014] Further, a mounting hole is formed in the fixing plate, and the fixed end of the measuring device is inserted through the mounting hole.

[0015] Further, an opening communicating with the mounting hole is formed in the fixing plate, and a fastening bolt is screwed on the fixing plate. The fastening bolt passes through the opening, and rotating the fastening bolt can adjust the size of the opening.

[0016] Further, the straight rod assembly includes a straight connecting rod and a first angle steel member. A third fastener passes through one end of the first angle steel member and the mounting strip hole to connect the first angle steel member and the mounting plate. A straight connecting strip hole is formed in the straight connecting rod along the extending direction of the straight connecting rod, and a fourth fastener passes through the first angle steel member and the straight connecting strip hole to connect the first angle steel member and the straight connecting rod.

[0017] Further, a roller assembly is further included. The roller assembly includes a second angle steel member and a universal wheel which are connected to each other. A fifth fastener passes through the second angle steel member and is connected to one end of the straight rod assembly away from the fixed platform assembly.

[0018] Further, the measuring device includes a dial indicator or a percentile indicator.

[0019] The beneficial effects of the present utility model:

[0020] A pit depth measuring device provided by the utility model, the straight rod assemblies are arranged on the fixed table assembly at intervals along the circumferential direction of the fixed table assembly. The height of the straight rod assemblies in the vertical direction can be adjusted, the position of the straight rod assemblies relative to the fixed table assembly can be adjusted, and the position of the measuring device on the fixed table assembly can be adjusted. Through the above settings, the height of the straight rod assemblies and the installation positions of the straight rod assemblies on the fixed table assembly can be adjusted according to the measurement requirements of different types of flat test pieces and different measurement parts, and the position of the measuring device can also be adjusted, so as to adapt to the measurement requirements of different types of flat test pieces and different measurement parts, and the structure is simple and easy to operate. Brief Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description in the embodiments of the present utility model. Obviously, the following described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the content of the embodiments of the present utility model and these drawings.

[0022] Figure 1 is a schematic diagram of a pit depth measuring device of the present utility model;

[0023] Figure 2 is a schematic diagram of the fixed table assembly in a pit depth measuring device of the present utility model.

[0024] In the figure:

[0025] 1. Fixed table assembly; 11. Connecting plate; 111. Connecting strip hole; 12. Mounting plate; 121. Mounting strip hole; 13. Fixed plate; 131. Fixed strip hole; 132. Mounting hole; 2. Straight rod assembly; 21. Straight connecting rod; 211. Straight connecting strip hole; 22. First angle steel piece; 3. Measuring device; 4. Roller assembly; 41. Second angle steel piece; 42. Universal wheel; 5. Third fastener; 6. Fourth fastener; 7. Second fastener; 8. Fifth fastener; 9. First fastener. Detailed Embodiments

[0026] Before explaining any embodiment of the present application in detail, it should be understood that the present application is not limited to the structural details and component arrangements described in the following description or shown in the above drawings.

[0027] In this application, the terms "comprise", "include", "have" or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the presence of additional identical elements in the process, method, article or device comprising such element.

[0028] In this application, the terms "connect", "combine", "couple", "mount" can be direct connection, combination, coupling or mounting, or can be indirect connection, combination, coupling or mounting. Among them, by way of example, direct connection means that two parts or components are connected together without the need to provide an intermediate member, and indirect connection means that two parts or components are respectively connected to at least one intermediate member, and these two parts or components are connected through the intermediate member. In addition, "connect" and "couple" are not limited to physical or mechanical connection or coupling, and can include electrical connection or coupling.

[0029] In this application, those of ordinary skill in the art will understand that the functions performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the functions performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0030] In this application, the orientation terms such as "upper", "lower", "left", "right", "front", "rear", etc. are described based on the orientation and positional relationship shown in the drawings, and should not be construed as a limitation on the embodiments of this application. In addition, in the context, it should also be understood that when it is mentioned that one element is connected "above" or "below" another element, it can not only be directly connected "above" or "below" another element, but also be indirectly connected "above" or "below" another element through an intermediate element. It should also be understood that the orientation terms such as upper side, lower side, left side, right side, front side, rear side, etc. not only represent the positive orientation, but can also be understood as the side orientation. For example, the lower side can include directly below, lower left, lower right, lower front, and lower rear, etc.

[0031] When measuring the pit depth of a flat test piece, in order to be able to adapt to the measurement needs of different models of flat test pieces and different measurement parts, improve versatility, and have a simple structure and be easy to operate, as Figure 1 - Figure 2 shown, the present utility model provides a pit depth measuring device. The pit depth measuring device includes a fixed table assembly 1, a straight rod assembly 2, and a measuring instrument 3.

[0032] Among them, multiple groups of straight rod assemblies 2 are arranged on the fixed table assembly 1 at intervals along the circumferential direction of the fixed table assembly 1. The height of the straight rod assembly 2 in the vertical direction can be adjusted, and the position of the straight rod assembly 2 relative to the fixed table assembly 1 can be adjusted. The measuring device 3 is used to measure the pit depth of the flat test piece. The measuring device 3 is fixedly arranged on the fixed table assembly 1, and the position of the measuring device 3 on the fixed table assembly 1 can be adjusted.

[0033] Through the above settings, the height of the straight rod assembly 2 and the installation position of the straight rod assembly 2 on the fixed table assembly 1 can be adjusted according to the measurement requirements of flat test pieces of different models and different measurement parts. The position of the measuring device 3 can also be adjusted, so as to adapt to the measurement requirements of flat test pieces of different models and different measurement parts. Moreover, the structure is simple and easy to operate.

[0034] Furthermore, the fixed table assembly 1 includes a connecting plate 11, a fixing plate 13, and two parallel and spaced installation plates 12. The installation plates 12 are arranged on the connecting plate 11, and the installation position of the installation plates 12 relative to the connecting plate 11 can be adjusted. The straight rod assembly 2 is arranged on the installation plates 12, and the measuring device 3 is arranged on the fixing plate 13. The fixing plate 13 is arranged on the connecting plate 11 and is located between the two installation plates 12. The installation position of the fixing plate 13 on the connecting plate 11 can be adjusted. When measuring the pit of the flat test piece, by adjusting the positions of the fixing plate 13 and the installation plates 12 on the connecting plate 11 as needed, the position of the measuring device 3 and the position of the straight rod assembly 2 can be adjusted, so as to adapt to the measurement requirements of the pits of flat test pieces of different models.

[0035] Furthermore, a connecting strip hole 111 is formed in the connecting plate 11 along the extending direction of the connecting plate 11. The first fastener 9 is passed through the installation plate 12 and the connecting strip hole 111 to connect the connecting plate 11 and the installation plate 12. Specifically, the first fastener 9 is a bolt. After the first fastener 9 passes through the connecting strip hole 111, it is matched with a nut to lock the relative position between the installation plate 12 and the connecting plate 11. When it is necessary to adjust the position of the installation plate 12, loosen the nut, then adjust the position of the installation plate 12 along the extending direction of the connecting strip hole 111 to a suitable position, and then lock the nut again. By adopting the above method, it is convenient to quickly adjust the relative position between the installation plate 12 and the connecting plate 11.

[0036] Further, an installation strip hole 121 is formed in the installation plate 12 along the extension direction of the installation plate 12, and the first fastener 9 is inserted into the installation strip hole 121 and the connection strip hole 111. Specifically, the first fastener 9 is a bolt. After the first fastener 9 passes through the connection strip hole 111 and the installation strip hole 121, it is matched with a nut, so as to lock the relative position between the installation plate 12 and the connection plate 11. When the position of the installation plate 12 needs to be adjusted, loosen the nut, then adjust the position of the installation plate 12 along the extension direction of the connection strip hole 111 and the direction of the installation strip hole 121 to a proper position, and then lock the nut again. By adopting the above method, it is convenient to quickly adjust the relative position between the installation plate 12 and the connection plate 11.

[0037] Further, a fixing strip hole 131 is formed in the fixing plate 13 along the extension direction of the fixing plate 13, and the second fastener 7 is inserted into the fixing strip hole 131 and the connection strip hole 111, so that the fixing plate 13 is connected to the connection plate 11. Specifically, the second fastener 7 is a bolt. After the second fastener 7 passes through the fixing strip hole 131 and the connection strip hole 111, it is matched with a nut, so as to lock the relative position between the installation plate 12 and the connection plate 11. When the position of the fixing plate 13 needs to be adjusted, loosen the nut, then adjust the position of the fixing plate 13 along the extension direction of the fixing strip hole 131 and the connection strip hole 111 to a proper position, and then lock the nut again. By adopting the above method, it is convenient to quickly adjust the relative position between the fixing plate 13 and the connection plate 11, so as to meet the need of adjusting the position of the measuring device 3.

[0038] Further, an installation hole 132 is formed in the fixing plate 13, and the fixed end of the measuring device 3 is inserted into the installation hole 132. By installing the measuring device 3 in the above way, it is convenient for the quick assembly of the measuring device 3.

[0039] Further, an opening communicating with the installation hole 132 is formed in the fixing plate 13, and a fastening bolt is screwed on the fixing plate 13. The fastening bolt passes through the opening, and rotating the fastening bolt can adjust the size of the opening. After the fixed end of the measuring device 3 is inserted into the installation hole 132, screw the fastening bolt, so that the opening is reduced, and the installation hole 132 tightly holds the fixed end of the measuring device 3, so as to lock the position of the measuring device 3 on the fixing plate 13.

[0040] Further, the straight rod assembly 2 includes a straight connecting rod 21 and a first angle steel member 22. The third fastener 5 passes through one end of the first angle steel member 22 and the mounting strip hole 121, so that the first angle steel member 22 is connected to the mounting plate 12. A straight connecting strip hole 211 is formed in the straight connecting rod 21 along the extending direction of the straight connecting rod 21. The fourth fastener 6 passes through the first angle steel member 22 and the straight connecting strip hole 211, so that the first angle steel member 22 is connected to the straight connecting rod 21. Specifically, both the third fastener 5 and the fourth fastener 6 are bolts. After the third fastener 5 passes through the mounting strip hole 121, it is matched with a nut. After the fourth fastener 6 passes through the straight connecting strip hole 211, it is matched with a nut, so as to lock the relative position between the mounting plate 12 and the straight connecting rod 21. When the position of the straight connecting rod 21 needs to be adjusted, loosen the nut, then adjust the position of the fixing plate 13 along the extending direction of the mounting strip hole 121 to a suitable position, adjust the height of the straight connecting rod 21 along the extending direction of the straight connecting strip hole 211, and then lock the nut again. By adopting the above method, it is convenient to quickly adjust the relative position between the mounting plate 12 and the straight connecting rod 21 and the height of the straight connecting rod 21, so as to meet the need of adjusting the position of the measuring device 3.

[0041] Further, the pit depth measuring device further includes a roller assembly 4. The roller assembly 4 includes a second angle steel member 41 and a universal wheel 42 which are connected to each other. The fifth fastener 8 passes through the second angle steel member 41 and is connected to the end of the straight rod assembly 2 far from the fixed table assembly 1. By providing the roller assembly 4, it is convenient to shift the pit depth measuring device.

[0042] Further, the measuring device 3 includes a micrometer or a dial indicator. Both the micrometer and the dial indicator can effectively measure the pit depth of the flat test piece. Specifically, it can be selected according to actual needs and will not be limited too much here.

[0043] The usage method of this pit depth measuring device is as follows:

[0044] Usage method 1:

[0045] When measuring the pit depth of a flat composite material test piece:

[0046] 1. Adjust the fixed table assembly 1 to be parallel to the horizontal tabletop and at a suitable height, make the probe of the dial indicator (or micrometer) perpendicular to the horizontal tabletop, and ensure that the bottom of the probe can touch the deepest part of the pit of the test piece to be tested;

[0047] 2. By adjusting the position of the straight rod assembly 2, make the bottom surfaces of the universal wheels 42 at the bottoms of the four straight rod assemblies 2 all stand on the plane of the flat test piece to be measured, and do not touch the pit position and leave an appropriate sliding position;

[0048] 3. Place the pit depth measuring device on a smooth and flat tabletop, then release the depth probe, press the zero key. When the reading on the digital display dial indicator shows zero, start the measurement.

[0049] 4. Move the pit depth measuring device to the plane to be tested on the test piece, align the depth probe with the center position of the test piece being impacted. After the reading stabilizes, the reading can be taken from the dial indicator.

[0050] 5. Measure twice repeatedly, and record the maximum value as the pit depth of the test piece after impact.

[0051] Method 2 of use:

[0052] When measuring the pit depth of a composite material structure test piece:

[0053] 1. Adjust the fixed table assembly 1 to be parallel to the horizontal tabletop and at an appropriate height, make the probe of the dial indicator (or micrometer) perpendicular to the horizontal tabletop, and ensure that the bottom of the probe can touch the deepest part of the pit of the test piece to be tested.

[0054] 2. By adjusting the position of the straight rod assembly 2, make the bottom surfaces of the four universal wheels 42 at the bottom of the straight rod assembly 2 all stand on the plane of the test piece to be tested on the flat plate, and do not touch the pit position and leave an appropriate sliding position.

[0055] 3. Place the pit depth measuring device on a smooth and flat tabletop, adjust the pit position of the test piece to be tested to be parallel to the horizontal tabletop, then select a complete position on the same horizontal plane as the pit edge of the pit, release the depth probe, press the zero key. When the reading on the digital display dial indicator shows zero, start the measurement.

[0056] 4. Move the pit depth measuring device to the pit to be tested on the test piece, align the depth probe with the center position of the test piece being impacted. After the reading stabilizes, the reading can be taken from the dial indicator. It can be measured repeatedly in multiple directions along the pit, and record the maximum value as the pit depth of the test piece after impact.

[0057] Obviously, the above-mentioned embodiments of the present invention are only examples for clearly explaining the present invention, and are not limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. A pit depth measuring device, characterized in that: include: Fixed table assembly (1); A straight rod assembly (2), wherein a plurality of groups of the straight rod assemblies (2) are arranged on the fixed platform assembly (1) at intervals along the circumference of the fixed platform assembly (1), the height of the straight rod assembly (2) in the vertical direction is adjustable, and the position of the straight rod assembly (2) relative to the fixed platform assembly (1) is adjustable; A measuring device (3) is used to measure the depth of a pit on a flat test piece. The measuring device (3) is fixedly arranged on the fixed platform assembly (1), and the position of the measuring device (3) on the fixed platform assembly (1) is adjustable.

2. The pit depth measuring device according to claim 1, characterized in that: The fixed platform assembly (1) comprises a connecting plate (11), a fixing plate (13) and two parallel and spaced mounting plates (12); the mounting plate (12) is arranged on the connecting plate (11), and the mounting position of the mounting plate (12) relative to the connecting plate (11) is adjustable; the straight rod assembly (2) is arranged on the mounting plate (12); the measuring device (3) is arranged on the fixing plate (13); the fixing plate (13) is arranged on the connecting plate (11) and is located between the two mounting plates (12); and the mounting position of the fixing plate (13) on the connecting plate (11) is adjustable.

3. The pit depth measuring device according to claim 2, characterized in that: A connecting strip hole (111) is provided on the connecting plate (11) along the extension direction of the connecting plate (11), and a first fastener (9) is inserted through the mounting plate (12) and the connecting strip hole (111), so that the connecting plate (11) is connected to the mounting plate (12).

4. The pit depth measuring device according to claim 3, characterized in that: A mounting strip hole (121) is provided on the mounting plate (12) along the extension direction of the mounting plate (12), and the first fastener (9) is inserted into the mounting strip hole (121) and the connecting strip hole (111).

5. The pit depth measuring device according to claim 3, characterized in that: A fixing strip hole (131) is provided on the fixing plate (13) along the extension direction of the fixing plate (13), and a second fastener (7) is inserted into the fixing strip hole (131) and the connecting strip hole (111), so that the fixing plate (13) and the connecting plate (11) are connected.

6. The pit depth measuring device according to claim 2, characterized in that: The fixing plate (13) is provided with a mounting hole (132), and the fixing end of the measuring device (3) is inserted into the mounting hole (132).

7. The pit depth measuring device according to claim 6, characterized in that: The fixing plate (13) is provided with an opening which is in communication with the mounting hole (132); a fastening bolt is screwed onto the fixing plate (13); the fastening bolt passes through the opening; the size of the opening can be adjusted by rotating the fastening bolt.

8. The pit depth measuring device according to claim 4, characterized in that: The straight rod assembly (2) comprises a straight connecting rod (21) and a first angle steel piece (22); a third fastener (5) passes through one end of the first angle steel piece (22) and the mounting strip hole (121), so that the first angle steel piece (22) is connected to the mounting plate (12); a straight connecting strip hole (211) is provided on the straight connecting rod (21) along the extension direction of the straight connecting rod (21); and a fourth fastener (6) passes through the first angle steel piece (22) and the straight connecting strip hole (211), so that the first angle steel piece (22) is connected to the straight connecting rod (21).

9. The pit depth measuring device according to claim 1, characterized in that: It also comprises a roller assembly (4), wherein the roller assembly (4) comprises a second angle steel piece (41) and a universal wheel (42) connected to each other, and a fifth fastener (8) passes through the second angle steel piece (41) and is connected to an end of the straight rod assembly (2) away from the fixed platform assembly (1).

10. The pit depth measuring device according to claim 1, characterized in that: The measuring device (3) comprises a micrometer or a vernier gauge.

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