Double-resistance strain gauge for steel strand drilling release strain test and production device

Abstract

The utility model discloses a double-resistance strain gauge for a steel strand drilling release strain test and a production device, and relates to the technical field of production devices. The rolling device comprises a workbench, a first rotating shaft is rotationally installed in the groove, a pressing plate is fixedly arranged on the outer side of the first rotating shaft in a sleeving mode, an ejector rod is rotationally installed at one end of the pressing plate, and a rolling assembly is arranged at one end of the workbench. A second rotating shaft is moved through a grip, the second rotating shaft drives an L-shaped plate to move in a sliding groove, the second rotating shaft drives a connecting rod, and the connecting rod drives a pressing roller to move, so that the pressing roller presses a protective film onto a substrate, the situation that many bubbles are generated due to hand pressing can be avoided, and the purpose of reducing the bubbles is achieved; and one end of the pressing plate is pressed downwards, so that the pressing plate rotates along the first rotating shaft, and the ejector rod ejects the positioning tool out of the mounting groove and takes out the positioning tool, so that the tool can be conveniently replaced, and the purpose of convenient replacement is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of production devices, in particular to a double-resistance strain gauge for steel strand drilling release strain testing and a production device. Background Art

[0002] The resistance strain gauge is a component used to measure strain, which can convert the change of strain on mechanical components into resistance change. The resistance strain gauge is made of Φ=0.02-0.05mm constantan wire or nickel-chromium wire wound into a grid shape (or corroded into a grid shape with a very thin metal foil) and sandwiched between two layers of insulating sheets. Dual resistance strain gauges are often used in the steel strand drilling release strain test;

[0003] The insulating protective films of existing resistance strain gauges are mostly attached by manual pressing, and manual pressing easily causes a large number of bubbles. Utility Model Content

[0004] In order to solve the problem of too many bubbles when pressing with hands;

[0005] The utility model aims to provide a double-resistance strain gauge for steel strand drilling release strain testing and a production device.

[0006] In order to solve the above technical problems, the utility model adopts the following technical scheme: a dual-resistance strain gauge for steel strand drilling release strain test, a substrate, the top of the substrate is provided with symmetrically distributed positioning grooves, the inner part of the positioning groove is provided with a foil grid, both ends of the foil grid are fixed with wiring pieces, wires are welded on the wiring pieces, a protective film is attached to the substrate, and the protective film can achieve the purpose of insulation protection, the bottom end of the substrate is provided with a backing glue, the backing glue is attached with easy-tear paper, the substrate can be fixed by the backing glue, the backing glue can be protected by the easy-tear paper, and positioning marks are fixed at the four corners of the substrate, and the protective film can be easily aligned by the positioning marks.

[0007] The cam is provided with a first end which is fixedly mounted on the workbench, and a second end which is fixedly mounted on the workbench with a first end which is fixedly mounted on the workbench with a first end which is fixedly mounted on the workbench with a first end.

[0008] Preferably, the rolling assembly includes an L-shaped plate, the outer side of the workbench is provided with symmetrically distributed slide grooves, the opposite end of the L-shaped plate is slidably clamped in the slide groove, and the second rotating shaft is rotatably installed on the opposite side of the L-shaped plate, and a connecting rod is fixedly sleeved on the outer side of the second rotating shaft, and a pressure roller is fixedly provided at one end of the connecting rod, and the L-shaped plate is driven to move in the slide groove by the second rotating shaft, and the second rotating shaft drives the connecting rod, and the connecting rod drives the pressure roller to move, so that the pressure roller presses the protective film onto the substrate, which can avoid the situation where a large number of bubbles are generated by hand pressing, and a handle is fixedly provided on the outer side of the second rotating shaft, and the second rotating shaft can be conveniently moved by the handle, and the connecting rod is inclined, which can facilitate pressure on the pressure roller.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] 1. Move the second rotating shaft by the handle, the second rotating shaft drives the L-shaped plate to move in the slide groove, the second rotating shaft drives the connecting rod, the connecting rod drives the pressing roller to move, so that the pressing roller presses the protective film onto the substrate, so as to avoid the situation where many bubbles are generated by hand pressing, thereby achieving the purpose of reducing bubbles;

[0011] 2. By pressing one end of the pressing plate downward, the pressing plate rotates along the first rotating shaft, and the pressing plate drives the ejector rod to move upward. The ejector rod ejects the positioning tooling from the installation groove, so that the tooling can be replaced conveniently, thereby achieving the purpose of convenient replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 The utility model is a schematic diagram of the structure of a double-resistance strain gauge for testing the strain release during drilling of a steel strand.

[0014] Figure 2 The utility model is a schematic diagram of the structure of a production device for a double-resistance strain gauge for testing the strain release during drilling of a steel strand.

[0015] Figure 3 It is a cross-sectional schematic diagram of the workbench and its connection structure of the utility model.

[0016] In the figure: 1. substrate; 11. positioning groove; 12. foil grid; 13. wiring piece; 14. wire; 15. protective film; 16. adhesive backing; 17. easy-tear paper; 18. positioning mark; 2. workbench; 3. mounting groove; 4. positioning tool; 5. groove; 6. first rotating shaft; 7. pressure plate; 8. ejector rod; 9. rolling assembly; 91. L-shaped plate; 92. slide groove; 93. second rotating shaft; 94. connecting rod; 95. pressure roller; 96. handle; 10. reset spring. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] Example: Figure 1-3 As shown, the utility model provides a dual-resistance strain gauge for testing the strain release of a stranded steel wire during drilling, comprising a substrate 1, a top of the substrate 1 being provided with symmetrically distributed positioning grooves 11, an inner portion of the positioning groove 11 being provided with a foil grid 12, both ends of the foil grid 12 being fixed with wiring pieces 13, a wire 14 being welded to the wiring piece 13, a protective film 15 being attached to the substrate 1, and the protective film 15 can achieve the purpose of insulation protection, a backing glue 16 being provided at the bottom end of the substrate 1, and an easy-tear paper 17 being attached to the backing glue 16, the substrate 1 can be fixed by the backing glue 16, and the backing glue 16 can be protected by the easy-tear paper 17, and positioning marks 18 are fixedly provided at the four corners of the substrate 1, and the positioning marks 18 can facilitate the alignment of the protective film 15.

[0019] A production device for a dual-resistance strain gauge for strain release testing of steel strand drilling, comprises a workbench 2, a mounting groove 3 is provided on the workbench 2, a positioning tool 4 is provided inside the mounting groove 3, a groove 5 is provided on the outer side of the workbench 2, a first rotating shaft 6 is rotatably installed inside the groove 5, a pressing plate 7 is fixedly sleeved on the outer side of the first rotating shaft 6, a push rod 8 is rotatably installed on one end of the pressing plate 7, one end of the push rod 8 is movably inserted in the mounting groove 3 and fits with the bottom end of the positioning tool 4, a rolling assembly 9 is provided at one end of the workbench 2, by pressing one end of the pressing plate 7 downward, the pressing plate 7 is rotated along the first rotating shaft 6, the pressing plate 7 drives the push rod 8 to move upward, and the push rod 8 pushes the positioning tool 4 out of the mounting groove 3, so that the tool can be replaced conveniently, and a reset spring 10 is fixedly provided at one end of the pressing plate 7 close to the push rod 8, one end of the reset spring 10 is fixedly connected to the inner wall of the groove 5, and one end of the pressing plate 7 can be driven to reset by the elastic force of the reset spring 10.

[0020] The rolling assembly 9 includes an L-shaped plate 91, and a symmetrically distributed slide groove 92 is opened on the outer side of the workbench 2. The opposite end of the L-shaped plate 91 is slidably clamped in the slide groove 92, and a second rotating shaft 93 is rotatably installed on the opposite side of the L-shaped plate 91. A connecting rod 94 is fixedly sleeved on the outer side of the second rotating shaft 93, and a pressure roller 95 is fixedly arranged at one end of the connecting rod 94. The L-shaped plate 91 is driven to move in the slide groove 92 by the second rotating shaft 93, and the second rotating shaft 93 drives the connecting rod 94, and the connecting rod 94 drives the pressure roller 95 to move, so that the pressure roller 95 presses the protective film 15 onto the substrate 1, which can avoid the situation where a large number of bubbles are generated by hand pressing. A handle 96 is fixed on the outer side of the second rotating shaft 93, and the second rotating shaft 93 can be conveniently moved by the handle 96. The connecting rod 94 is inclined, which can facilitate the pressure on the pressure roller 95.

[0021] Working principle: First, put the foil grid 12 welded with the wire 14 into the positioning groove 11, then align the protective film 15 with the positioning mark 18, and then put the substrate 1 into the positioning fixture 4, and then move the second rotating shaft 93 through the handle 96, the second rotating shaft 93 drives the L-shaped plate 91 to move in the slide groove 92, the second rotating shaft 93 drives the connecting rod 94, and the connecting rod 94 drives the pressing roller 95 to move, so that the pressing roller 95 presses the protective film 15 onto the substrate 1, so as to avoid the situation where many bubbles are generated by hand pressing, thereby achieving the purpose of reducing bubbles;

[0022] When the positioning tooling 4 needs to be replaced, one end of the pressing plate 7 is pressed downward to rotate the pressing plate 7 along the first rotating shaft 6. The pressing plate 7 drives the push rod 8 to move upward, and the push rod 8 pushes the positioning tooling 4 out of the mounting groove 3. This makes it convenient to replace the tooling, thereby achieving the purpose of convenient replacement.

[0023] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A dual-resistance strain gauge for testing the strain release of a steel strand during drilling, comprising a substrate (1), characterized in that: The top of the substrate (1) is provided with symmetrically distributed positioning grooves (11), a foil grid (12) is clamped inside the positioning groove (11), both ends of the foil grid (12) are fixed with wiring pieces (13), a wire (14) is welded to the wiring piece (13), and a protective film (15) is attached to the substrate (1).

2. A dual resistance strain gauge for steel strand drilling release strain testing as claimed in claim 1, characterized in that: The bottom end of the substrate (1) is provided with a backing adhesive (16), and an easy-tear paper (17) is attached to the backing adhesive (16).

3. A dual resistance strain gauge for steel strand drilling release strain testing as claimed in claim 1, characterized in that: Positioning marks (18) are fixedly provided at the four corners of the substrate (1).

4. A production device for a double resistance strain gauge for steel strand drilling release strain testing as claimed in claim 1, comprising a workbench (2), characterized in that: The workbench (2) is provided with a mounting groove (3), a positioning tool (4) is clamped inside the mounting groove (3), a groove (5) is provided on the outside of the workbench (2), a first rotating shaft (6) is rotatably mounted inside the groove (5), a pressure plate (7) is fixedly sleeved on the outside of the first rotating shaft (6), a push rod (8) is rotatably mounted on one end of the pressure plate (7), one end of the push rod (8) is movably inserted in the mounting groove (3) and fits with the bottom end of the positioning tool (4), and a rolling assembly (9) is provided at one end of the workbench (2).

5. A production device for a double resistance strain gauge for steel strand drilling release strain testing as claimed in claim 4, characterized in that: The rolling assembly (9) comprises an L-shaped plate (91), the outer side of the workbench (2) is provided with symmetrically distributed sliding grooves (92), the opposite end of the L-shaped plate (91) is slidably clamped in the sliding groove (92), the opposite side of the L-shaped plate (91) is rotatably mounted with a second rotating shaft (93), the outer side of the second rotating shaft (93) is fixedly sleeved with a connecting rod (94), and one end of the connecting rod (94) is fixedly provided with a pressure roller (95).

6. A production device for a double resistance strain gauge for steel strand drilling release strain testing as claimed in claim 4, characterized in that: A return spring (10) is fixedly provided at one end of the pressure plate (7) close to the push rod (8), and one end of the return spring (10) is fixedly connected to the inner wall of the groove (5).

7. The production device of a dual resistance strain gauge for steel strand drilling release strain test as claimed in claim 5, characterized in that: A handle (96) is fixedly provided on the outer side of the second rotating shaft (93).

8. The production device of a dual resistance strain gauge for steel strand drilling release strain test as claimed in claim 5, characterized in that: The connecting rod (94) is arranged to be inclined.

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