An experimental device that can expand the application scenarios of dial indicator testing

Abstract

This utility model discloses a test device that expands the application scenarios of dial indicator testing, relating to the field of dial indicator testing technology. It includes a support base, a support frame at the top of the support base, a lifting adjustment knob at the top of the support frame, a lead screw at the bottom of the lifting adjustment knob, a crossbeam connected to the outer wall of the lead screw via threads, a moving mechanism at the top of the crossbeam, a lever support at the top of the moving mechanism, a lever shaft connected to the inner wall of the lever support, a balance weight slidably connected to the middle of the lever, a measuring probe connected to one end of the lever via a first C-shaped hinge, and a probe vertical holding bracket sleeved around the measuring probe. This utility model avoids the size disadvantage of the dial indicator itself, enabling the dial indicator to be used for displacement and deformation measurement in small spaces, thus improving the efficiency of dial indicator use.

Description

Technical Field

[0001] This utility model relates to the field of dial indicator testing technology, and in particular to a test device that can expand the application scenarios of dial indicator testing. Background Technology

[0002] In the field of testing and inspection, the "contact method" is an important measurement technique for measuring the deformation and displacement of a specimen. For example, in bending tests, a dial indicator is used to directly measure the deflection of the specimen, thereby obtaining the specimen's strain and modulus.

[0003] This method utilizes a dial indicator / micrometer / ten-thousand-meter indicator (optical scale) with its pin directly contacting the sample. The deformation or movement of the sample directly drives the pin, thus directly obtaining the deformation or displacement. This method is simple and convenient to operate, provides stable measurements, and can achieve high-precision measurements.

[0004] In actual testing, the use of dial indicators / micrometers has significant limitations, mainly due to their large size, which makes them unsuitable for testing in small spaces, severely restricting their application. For example, in bending tests, when the sample is small, the span cannot accommodate a dial indicator; similarly, in compression tests, a dial indicator cannot be placed between two pressure plates to measure compression deformation, thus indicating room for improvement. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a testing device that expands the application scenarios of dial indicator testing. Its advantage lies in overcoming the inherent size disadvantage of dial indicators, enabling them to be used for displacement and deformation measurement in small spaces, thus improving the efficiency of dial indicator usage.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A test device for expanding the application scenarios of dial indicator testing includes a support base, a support frame is provided on the top of the support base, a lifting adjustment knob is provided on the top of the support frame, a lead screw is provided at the bottom of the lifting adjustment knob, a crossbeam is connected to the outer wall of the lead screw by a thread, and a moving mechanism is provided on the top of the crossbeam.

[0008] The top of the moving mechanism is provided with a lever support, and the inner wall of the lever support is connected to a lever via a lever pivot. A balance weight is slidably connected to the middle position of the lever. One end of the lever is connected to a measuring probe via a first C-type hinge. A probe vertical holding bracket is sleeved on the outside of the measuring probe and is fixedly connected to the lever. The other end of the lever is connected to a connecting rod via a second C-type hinge, and the top of the connecting rod is connected to the top rod of a dial indicator via a thread.

[0009] A dial indicator adjustment assembly is fixedly connected to the outer wall of the lever support. The dial indicator adjustment assembly is connected to a C-type dial indicator fixing bracket, and the dial indicator is fixedly connected inside the C-type dial indicator fixing bracket.

[0010] The above technical solution utilizes the lever principle to spatially separate the measuring probe in contact with the sample from the dial indicator, allowing the measuring probe to be placed in a confined space to measure deformation and displacement. This solves the problem that dial indicators cannot be used in confined spaces, greatly reducing space requirements and expanding the application scenarios of dial indicators. It also avoids the inherent size disadvantage of dial indicators, enabling them to be applied to displacement and deformation measurements in small spaces and improving their efficiency.

[0011] The present invention is further configured such that the moving mechanism includes a horizontal slide rail disposed on the top of the crossbeam, a slider slidably connected to the inner wall of the horizontal slide rail, the slider being locked to the horizontal slide rail by a slider locking knob, and the slider being connected to a lever support.

[0012] The above technical solution allows for adjusting the position of the slider within the horizontal slide rail, thereby improving the ease of lever support adjustment.

[0013] The present invention is further configured such that the dial indicator adjustment assembly includes a portal frame fixed to the outer wall of the lever support, a slotted column fixedly connected to the top of the portal frame, a double-axis locking buckle sleeved on the outer wall of the slotted column, and a horizontal support rod provided on the back of the C-type dial indicator fixing bracket. The horizontal support rod passes through the slot of the slotted column and is inserted into the round hole of the double-axis locking buckle. Both the horizontal support rod and the double-axis locking buckle can be locked by bolts.

[0014] The above technical solutions allow for vertical adjustment of the dial indicator by adjusting the position of the movable dual-axis locking buckle on the slotted column, and locking it with bolts. Similarly, adjusting the position of the movable horizontal support rod on the dual-axis locking buckle allows for horizontal adjustment of the dial indicator, and locking it with bolts, thus improving the convenience of dial indicator position adjustment.

[0015] The present invention is further provided with a C-shaped protective sleeve on the outer wall of the dial indicator top rod, the C-shaped protective sleeve completely enclosing the dial indicator top rod.

[0016] The above technical solution, namely the C-shaped protective sleeve, can protect the dial indicator's top rod and prevent damage to the dial indicator.

[0017] The present invention is further configured such that the C-shaped protective sleeve is made of pure copper.

[0018] Through the above technical solutions, the C-type protective sleeve made of pure copper has good corrosion resistance and improves the service life of the C-type protective sleeve.

[0019] The present invention is further configured such that the diameter of the lifting adjustment knob is larger than the diameter of the lead screw, and the outer wall of the lifting adjustment knob is provided with a plurality of anti-slip ribs distributed at equal intervals.

[0020] The above technical solution, namely the anti-slip ribs, increases the friction between the fingers and the height adjustment knob, preventing slippage during operation.

[0021] The present invention is further provided that the outer wall of the lever support on both sides of the lever shaft is provided with balance adjustment holes.

[0022] Through the above technical solutions: when the lever shaft is located in the left balance adjustment hole, the lever is an unequal arm lever, which can improve the measurement accuracy; when the lever shaft is located in the right balance adjustment hole, the lever is an unequal arm lever, which can expand the test measurement range.

[0023] The beneficial effects of this utility model are as follows:

[0024] 1. This experimental device, which expands the application scenarios of dial indicator testing, broadens the spatial limitations of dial indicator applications: This experimental device uses the lever principle to transform the measurement space, avoiding the size disadvantage of the dial indicator itself, enabling the dial indicator to be applied to displacement and deformation measurement in small spaces, thus improving the efficiency of dial indicator use.

[0025] 2. This experimental device, which expands the application scenarios of dial indicator testing, extends the accuracy limitations of dial indicators: This experimental device utilizes the principle of similar triangles, which can improve the measurement accuracy of dial indicators to a certain extent, enabling dial indicators to be applied to higher precision measurements.

[0026] 3. This experimental device, which expands the application scenarios of dial indicator testing, extends the measurement range limitations of dial indicator: This experimental device utilizes the principle of similar triangles, which can improve the measurement range of dial indicator to a certain extent, enabling existing dial indicator to be applied to a wider range of measurements. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the main structure of a test device for expanding the application scenarios of dial indicator testing proposed in this utility model.

[0028] Figure 2 This is a side view of the experimental device proposed in this utility model, which can expand the application scenarios of dial indicator testing.

[0029] Figure 3 for Figure 1A magnified structural diagram of point A in the middle.

[0030] In the diagram: 1. Lever; 2. Lever support; 3. Balance weight; 4. Lever pivot; 51. Probe vertical holding bracket; 52. First C-type hinge; 53. Measuring probe; 61. Portal bracket; 62. Slotted column; 63. Double-axis locking buckle; 64. Horizontal support rod; 66. Second C-type hinge; 67. Connecting rod; 68. C-type dial indicator fixing bracket; 7. Dial indicator; 8. Bracket base; 81. Lead screw; 82. Support frame; 83. Lifting adjustment knob; 84. Crossbeam; 85. Horizontal slide rail; 86. Slider; 87. Slider locking knob. Detailed Implementation

[0031] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0032] The embodiments of this patent are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this patent, and should not be construed as limiting this patent.

[0033] Reference Figure 1-3 A test device that can expand the application scenarios of dial indicator testing includes a support base 8, a support frame 82 is provided on the top of the support base 8, a lifting adjustment knob 83 is provided on the top of the support frame 82, a lead screw 81 is provided at the bottom of the lifting adjustment knob 83, a crossbeam 84 is connected to the outer wall of the lead screw 81 by a thread, and a moving mechanism is provided on the top of the crossbeam 84.

[0034] The top of the moving mechanism is provided with a lever support 2. The inner wall of the lever support 2 is connected to a lever 1 via a lever pivot 4. A balance weight 3 is slidably connected to the middle position of the lever 1. One end of the lever 1 is connected to a measuring probe 53 via a first C-type hinge 52. A probe vertical holding bracket 51 is sleeved on the outside of the measuring probe 53 and is fixedly connected to the lever 1. The other end of the lever 1 is connected to a connecting rod 67 via a second C-type hinge 66. The top of the connecting rod 67 is connected to the top rod of the dial indicator 7 via a thread.

[0035] A dial indicator adjustment assembly is fixedly connected to the outer wall of the lever support 2. The dial indicator adjustment assembly is connected to a C-type dial indicator fixing bracket 68. The dial indicator 7 is fixedly connected inside the C-type dial indicator fixing bracket 68.

[0036] In this embodiment, the moving mechanism includes a horizontal slide rail 85 disposed on the top of the crossbeam 84. A slider 86 is slidably connected to the inner wall of the horizontal slide rail 85. The slider 86 is locked to the horizontal slide rail 85 by a slider locking knob 87. The slider 86 is connected to the lever support 2. Adjusting the position of the slider 86 within the horizontal slide rail 85 can adjust the front and rear position of the lever support 2, thereby improving the convenience of adjusting the lever support 2.

[0037] The dial indicator adjustment assembly includes a portal frame 61 fixed to the outer wall of the lever support 2. A slotted column 62 is fixedly connected to the top of the portal frame 61. A double-axis locking buckle 63 is sleeved on the outer wall of the slotted column 62. A horizontal support rod 64 is provided on the back of the C-type dial indicator fixing bracket 68. The horizontal support rod 64 passes through the slot of the slotted column 62 and is inserted into the round hole of the double-axis locking buckle 63. Both the horizontal support rod 64 and the double-axis locking buckle 63 can be locked by bolts. Adjusting the position of the double-axis locking buckle 63 on the slotted column 62 can realize the vertical adjustment of the dial indicator 7 and lock it with bolts. Adjusting the position of the horizontal support rod 64 on the double-axis locking buckle 63 can realize the horizontal adjustment of the dial indicator 7 and lock it with bolts, which improves the convenience of adjusting the position of the dial indicator 7.

[0038] Furthermore, the outer wall of the dial indicator 7's top rod is equipped with a C-shaped protective sleeve, which completely encloses the dial indicator 7's top rod, thus protecting it from damage. The C-shaped protective sleeve is made of pure copper, which has excellent corrosion resistance and improves its service life.

[0039] The diameter of the lifting adjustment knob 83 is larger than that of the lead screw 81. The outer wall of the lifting adjustment knob 83 is provided with multiple anti-slip ribs that are evenly distributed. The anti-slip ribs can increase the friction between the fingers and the lifting adjustment knob 83, and prevent slippage during operation.

[0040] It is worth mentioning that the lever support 2 has balance adjustment holes on the outer walls on both sides of the lever shaft 4. When the lever shaft 4 is located in the left balance adjustment hole, the lever 1 is an unequal arm lever, which can improve the measurement accuracy. When the lever shaft 4 is located in the right balance adjustment hole, the lever 1 is an unequal arm lever, which can expand the test measurement range.

[0041] Working principle: The measuring probe 53, which is in contact with the sample, is spatially separated from the dial indicator 7 by lever principle. This allows the measuring probe 53 to be placed in a confined space to measure deformation and displacement. This solves the problem that the dial indicator 7 cannot be used in confined spaces, greatly reduces space requirements and expands the application scenarios of the dial indicator 7. It also avoids the size disadvantage of the dial indicator 7 itself, enabling the dial indicator 7 to be applied to displacement and deformation measurement in small spaces, thus improving the efficiency of the dial indicator 7.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A test device for testing application scenarios of a dial gauge, comprising a support base (8), characterized in that, The support frame (82) is provided on the top of the support base (8), the lifting adjustment knob (83) is provided on the top of the support frame (82), the lead screw (81) is provided at the bottom of the lifting adjustment knob (83), the outer wall of the lead screw (81) is connected to the crossbeam (84) by thread, and the top of the crossbeam (84) is provided with a moving mechanism. The top of the moving mechanism is provided with a lever support (2), and the inner wall of the lever support (2) is connected to a lever (1) through a lever pivot (4). A balance weight (3) is slidably connected to the middle position of the lever (1). One end of the lever (1) is connected to a measuring probe (53) through a first C-type hinge (52). A probe vertical holding bracket (51) is sleeved on the outside of the measuring probe (53). The probe vertical holding bracket (51) is fixedly connected to the lever (1). The other end of the lever (1) is connected to a connecting rod (67) through a second C-type hinge (66). The top of the connecting rod (67) is connected to the top rod of the dial indicator (7) through a thread. The lever support (2) is fixedly connected to a dial indicator adjustment assembly, which is connected to a C-type dial indicator fixing bracket (68). The dial indicator (7) is fixedly connected inside the C-type dial indicator fixing bracket (68).

2. The test apparatus for expanding the application scenarios of dial indicator testing according to claim 1, characterized in that, The moving mechanism includes a horizontal slide rail (85) disposed on the top of the crossbeam (84), and a slider (86) is slidably connected to the inner wall of the horizontal slide rail (85). The slider (86) is locked to the horizontal slide rail (85) by a slider locking knob (87), and the slider (86) is connected to the lever support (2).

3. The test apparatus for expanding the application scenarios of dial indicator testing according to claim 1, characterized in that, The dial indicator adjustment assembly includes a portal frame (61) fixed to the outer wall of the lever support (2). A slotted column (62) is fixedly connected to the top of the portal frame (61). A double-axis locking buckle (63) is sleeved on the outer wall of the slotted column (62). A horizontal support rod (64) is provided on the back of the C-type dial indicator fixing bracket (68). The horizontal support rod (64) passes through the slot of the slotted column (62) and is inserted into the round hole of the double-axis locking buckle (63). Both the horizontal support rod (64) and the double-axis locking buckle (63) can be locked by bolts.

4. The test apparatus for expanding the application scenarios of dial indicator testing according to claim 1, characterized in that, The outer wall of the dial indicator (7) top rod is provided with a C-shaped protective sleeve, which completely wraps the dial indicator (7) top rod.

5. The test apparatus for expanding the application scenarios of dial indicator testing according to claim 4, characterized in that, The C-type protective sleeve is made of pure copper.

6. The test apparatus for expanding the application scenarios of dial indicator testing according to claim 1, characterized in that, The diameter of the lifting adjustment knob (83) is larger than the diameter of the lead screw (81), and the outer wall of the lifting adjustment knob (83) is provided with multiple anti-slip ribs distributed at equal intervals.

7. A test apparatus for expanding the application scenarios of dial indicator testing according to any one of claims 1-6, characterized in that, The lever support (2) has balance adjustment holes on the outer walls on both sides of the lever shaft (4).

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