Strain rosette wiring structure for temporary quick connection and use method of strain rosette wiring structure

Abstract

The invention relates to a strain rosette wiring structure for temporary quick connection and a use method thereof. The strain rosette wiring structure comprises a data acquisition line fixing part and a strain rosette wiring fixing part, the data acquisition line fixing part comprises a plurality of acquisition line wiring holes, and each acquisition line wiring hole is provided with a fixing screw for fixing a data acquisition line; the strain rosette wiring fixing part comprises a bottom clamping plate and a pressing iron plate, the bottom clamping plate is provided with a plurality of copper plate grooves, the copper plate grooves and the acquisition line wiring holes are arranged in a one-to-one correspondence manner, the pressing iron plate is provided with rubber raised lines, and the strain rosette wiring is arranged in the copper plate grooves. And an electrical path is formed between the strain rosette wiring and the data acquisition line. The device is arranged near a measuring point, the strain rosette can be rapidly connected, the purpose of temporary, mass and rapid connection is achieved, the connection efficiency is improved, the connection process is safe and easy to operate, welding is not needed, connection is stable and orderly, the detection efficiency is greatly improved, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] This invention relates to the technical field of shipbuilding, specifically to a strain gauge wiring structure for temporary quick connection and its usage method. It relates to a strain gauge wiring structure and its usage method for rapid, batch, and temporary connection of strain gauge wiring and data acquisition lines. Background Technology

[0002] In existing technologies, during the construction of some ships, simulations are built for key parts and structures to verify the process. Among these, the measurement of residual stress on the surface of structural components involves many measuring points, is time-consuming, and the construction of some measuring points is inconvenient. The connection work between a large number of strain gauges and data acquisition lines is labor-intensive and labor-intensive. In addition, the soldering process generates solder vapor, which poses a safety hazard to the measurement personnel.

[0003] Currently, measurement work is generally time-sensitive, and only temporary connections are required between strain gauges and data acquisition lines during the measurement process. Traditional connection methods are difficult to meet project requirements; therefore, there is an urgent need for a strain gauge wiring structure that can be used in large quantities for temporary applications. Summary of the Invention

[0004] The purpose of this invention is to provide an improved strain gauge splice wiring structure and its usage method for temporary quick connections. Through improvements in structure and method, it can be applied to the connection between strain gauges and data lines in large quantities for temporary use. It is efficient, fast, safe and easy to operate, thus improving efficiency and reducing the labor intensity of operators.

[0005] To achieve the above objectives, the technical solution of the present invention is: a strain gauge wiring structure for temporary quick connection, characterized in that: the strain gauge wiring structure includes a printed circuit board base, the printed circuit board base includes a data acquisition line fixing part and a strain gauge wiring fixing part; the data acquisition line fixing part includes a plurality of acquisition line wiring holes, each acquisition line wiring hole is provided with a fixing screw for fixing the data acquisition line set in the acquisition line wiring hole; the strain gauge wiring fixing part includes a bottom clamping plate and a clamping iron plate that cooperates therewith, one end of the bottom clamping plate and the clamping iron plate are rotatably connected by a rotating pin, the bottom clamping plate is provided with a plurality of copper plate grooves, the copper plate grooves are provided one-to-one with the acquisition line wiring holes, the clamping iron plate is provided with rubber protrusions that cooperate with the copper plate grooves, the strain gauge wiring is set in the copper plate grooves, and through the clamping cooperation between the bottom clamping plate and the clamping iron plate, an electrical path is formed between the strain gauge wiring and the data acquisition line.

[0006] Preferably, the printed circuit board base contains a power circuit, the bottom plate is made of engineering plastic, and the bottom plate has several arc-shaped grooves. Each groove is filled with a copper plate to form a copper plate groove. The copper plate is connected to the power circuit by soldering.

[0007] Furthermore, the main body of the pressing plate is made of iron plate, and the rubber ridge is in the shape of a raised arc, and the rubber ridge is made of insulating rubber.

[0008] Furthermore, one end of the bottom plate and one end of the pressing iron plate form a rotatable end, and the other end of the bottom plate is provided with a plate magnet, and the other end of the pressing iron plate is provided with a plate magnet that cooperates with the plate magnet. The plate magnet and the plate magnet attract each other, so that the bottom plate and the pressing iron plate are pressed and engaged.

[0009] Furthermore, the data acquisition line fixing part is provided with 6 parallel acquisition line connection holes, with gaps between adjacent acquisition line connection holes. The bottom plate is provided with 6 copper plate grooves corresponding to the acquisition line connection holes, and the pressing iron plate is provided with 6 rubber protrusions corresponding to the copper plate grooves.

[0010] Furthermore, the data acquisition cable connection holes are evenly distributed within the data acquisition cable fixing part, with a gap of 1-5cm between adjacent data acquisition cable connection holes.

[0011] Furthermore, the bottom of the printed circuit board base is equipped with a stabilizing component, which consists of a foam layer and a strong magnetic adsorption layer for the base.

[0012] A method for using a strain gauge wiring structure for temporary quick connection is characterized by the following steps: a) installing the strain gauge wiring structure; b) connecting the data acquisition lines sequentially to the printed circuit board base and securing them with screws; c) fixing the strain gauge connection structure near the strain gauge on the surface to be tested; d) placing the strain gauge wires sequentially into the arc-shaped groove above the bottom clamping plate; e) rotating the clamping plate to attract the strong magnet on the clamping plate and the strong magnet on the clamping plate of the printed circuit board base, thus clamping and engaging the bottom clamping plate with the clamping plate, forming an electrical path between the strain gauge wiring and the data acquisition lines; f) connecting the resistance measuring device to the printed circuit board base, turning on the resistance measuring device to measure the wiring resistance of the strain gauge wiring. If the resistance is within the design range of 120±1 ohms, turn off the resistance measuring device and begin the strain gauge measurement.

[0013] Furthermore, in step c, for magnetic structures, the strain rose connection structure is fixed to the vicinity of the strain rose on the surface of the test piece by means of a strong magnet adsorption layer on the base of the printed circuit board; for non-magnetic structures, the strain rose connection structure is fixed to the vicinity of the strain rose on the surface of the test piece by means of a foam layer on the base of the printed circuit board.

[0014] Compared with the prior art, the technical solution of the present invention not only improves the overall technical solution, but also includes many improvements in details. Specifically, it has the following beneficial effects: 1. The improved solution of the present invention includes a strain gauge wiring structure comprising a printed circuit board base, the printed circuit board base comprising a data acquisition line fixing part and a strain gauge wiring fixing part; the data acquisition line fixing part comprises a plurality of acquisition line wiring holes, each acquisition line wiring hole being provided with a fixing screw for fixing the data acquisition line installed in the acquisition line wiring hole; the strain gauge wiring fixing part comprises a bottom clamping plate and a clamping iron plate that cooperates therewith, and through the clamping cooperation between the bottom clamping plate and the clamping iron plate, an electrical path is formed between the strain gauge wiring and the data acquisition line. By setting this device near the measurement point, strain gauges can be quickly connected to achieve the purpose of temporary, large-scale, and rapid connection, which not only improves the connection efficiency, but also makes the connection process safe and easy to operate, does not require welding, and the connection is stable and orderly, greatly improving the detection efficiency; 2. In the technical solution of the present invention, the bottom plate is provided with a number of copper plate grooves, and the copper plate grooves are set one by one with the wire connection holes of the acquisition line. The pressing iron plate is provided with rubber protrusions that cooperate with the copper plate grooves. The strain gauge wires are set in the copper plate grooves. The other end of the bottom plate is provided with a plate magnet, and the other end of the pressing iron plate is provided with an iron magnet that cooperates with the plate magnet. The plate magnet and the iron magnet attract each other, so that the bottom plate and the pressing iron plate are pressed and locked together. Several strain gauge wires can be connected at the same time with one pressing and locking, which is highly efficient and convenient to disassemble and assemble, saving time and effort. 3. The present invention has a simple structure, reasonable layout, is easy to use, can be repeatedly reused, improves detection efficiency, and reduces labor costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention.

[0016] Figure 2 This is a schematic diagram of a specific embodiment of the present invention.

[0017] Figure label: 1 Printed circuit board base, 2 Fixing screw, 3 Acquisition line wiring hole, 4 Rotating pin, 5 Copper plate groove, 6 Bottom clamping plate, 7 Rubber protrusion, 8 Pressing iron plate, 9 Clamping plate strong magnet, 10 Strain gauge wiring, 11 Iron plate strong magnet, 12 Resistance display screen, 13 Switch, 14 Resistance measuring device, 15 Foam layer, 16 Base strong magnet adsorption layer. Detailed Implementation

[0018] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] This invention provides a strain gauge splice structure for temporary quick-connection, and particularly relates to the mechanical connection structure therein, see details below. Figure 1 The difference between this and existing technologies lies in the following: the strain gauge wiring structure includes a printed circuit board base 1, which includes a data acquisition line fixing part and a strain gauge wiring fixing part; the data acquisition line fixing part includes several acquisition line wiring holes 3, each with a fixing screw 2 for fixing the data acquisition line installed in the acquisition line wiring hole; the strain gauge wiring fixing part includes a bottom clamping plate 6 and a clamping iron plate 8 that cooperates with it, one end of the bottom clamping plate and the clamping iron plate are rotatably connected by a rotating pin 4, the bottom clamping plate has several copper plate grooves 5, each corresponding to an acquisition line wiring hole, the clamping iron plate has rubber protrusions that cooperate with the copper plate grooves, the strain gauge wiring is installed in the copper plate groove, and the electrical path is formed between the strain gauge wiring and the data acquisition line through the clamping cooperation between the bottom clamping plate and the clamping iron plate.

[0020] In use, the data acquisition line fixing part includes several acquisition line connection holes, allowing multiple data acquisition lines to be connected simultaneously. The strain gauge wiring fixing part has several copper plate grooves, which correspond one-to-one with the acquisition line connection holes. Through the clamping fit between the bottom plate and the clamping iron plate, an electrical path is formed between the strain gauge wiring and the data acquisition line, enabling quick connection of strain gauges. This achieves the purpose of temporary, large-scale, and rapid connection, which not only improves connection efficiency but also ensures a safe and easy connection process. It does not require welding, and the connection is stable and orderly, greatly improving detection efficiency and reducing manual operation intensity.

[0021] Example 1 This embodiment describes a strain gauge wiring structure for temporary quick connections; see details below. Figure 1 The strain gauge wiring structure includes a printed circuit board base 1, which includes a data acquisition line fixing part and a strain gauge wiring fixing part. The data acquisition line fixing part includes several acquisition line wiring holes 3, each of which is provided with a fixing screw 2 to fix the data acquisition line installed in the acquisition line wiring hole. The acquisition line wiring hole is provided with a circuit connection terminal, which is connected to the power circuit of the printed circuit board base. This part of the circuit connection terminal is existing technology, and its specific structure and connection relationship will not be described in detail here.

[0022] The strain gauge wiring fixing part includes a bottom clamping plate 6 and a clamping iron plate 8 that cooperates with it. One end of the bottom clamping plate and the clamping iron plate are rotatably connected by a rotating pin 4. The bottom clamping plate is provided with several copper plate grooves 5, and the copper plate grooves are set one by one with the data acquisition line wiring holes. The clamping iron plate is provided with rubber protrusions 7 that cooperate with the copper plate grooves. The strain gauge wiring is set in the copper plate grooves. Through the clamping cooperation between the bottom clamping plate and the clamping iron plate, an electrical path is formed between the strain gauge wiring and the data acquisition line.

[0023] Specifically, the printed circuit board base contains a power circuit. The bottom plate is made of engineering plastic and has several arc-shaped through grooves, or more precisely, semi-circular grooves. Each groove contains a copper plate that fits into the groove, forming a copper plate groove. The copper plate is connected to the power circuit by soldering. The power circuit part of the printed circuit board (PCB) base is existing technology, so its specific circuit layout and connection principle will not be described in detail here.

[0024] Furthermore, the main body of the clamping plate is made of iron plate, and the clamping plate has rubber protrusions that correspond one-to-one with the semi-circular grooves. The rubber protrusions are in the shape of raised arcs and are made of insulating rubber. When the two are in contact, they can fasten the strain gauge wiring, thus forming an electrical path between the strain gauge wiring and the data acquisition line. Furthermore, one end of the bottom clamping plate and one end of the clamping plate form a rotatable end. The other end of the bottom clamping plate is equipped with a clamping plate strong magnet, and the other end of the clamping plate is equipped with an iron plate strong magnet that cooperates with the clamping plate strong magnet. The clamping plate strong magnet 9 and the iron plate strong magnet 11 attract each other, so that the bottom clamping plate and the clamping plate are clamped and connected.

[0025] In this embodiment, the data acquisition cable fixing part has six parallel acquisition cable connection holes with gaps between adjacent acquisition cable connection holes. The bottom plate has six copper plate grooves corresponding to the acquisition cable connection holes, and the pressing iron plate has six rubber protrusions corresponding to the copper plate grooves. The acquisition cable connection holes are evenly distributed in the data acquisition cable fixing part, and the gap between adjacent acquisition cable connection holes is 1-5cm.

[0026] The bottom of the printed circuit board base is equipped with a stabilizing component, which consists of a foam layer 15 and a strong magnet adsorption layer 16. For magnetic structures, the strain gauge connection structure is fixed to the vicinity of the strain gauge on the surface of the test piece by the strong magnet adsorption layer; for non-magnetic structures, the strain gauge connection structure is fixed to the vicinity of the strain gauge on the surface of the test piece by the foam layer, so as to maintain stability throughout the testing process and improve testing efficiency and accuracy.

[0027] Example 2 This embodiment describes a strain gauge wiring structure for temporary quick connections. The strain gauge wiring structure includes a printed circuit board base, which includes a data acquisition line fixing part and a strain gauge wiring fixing part. The data acquisition line fixing part includes several acquisition line connection holes, each with a corresponding fixing screw for fixing the data acquisition line installed in the acquisition line connection hole. The strain gauge wiring fixing part includes a bottom clamping plate and a corresponding clamping iron plate. One end of the bottom clamping plate and the clamping iron plate are rotatably connected by a rotating pin. The bottom clamping plate has several copper plate grooves, each corresponding to one of the acquisition line connection holes. The clamping iron plate has rubber protrusions that mate with the copper plate grooves. The strain gauge wiring is installed in the copper plate grooves. Through the clamping fit between the bottom clamping plate and the clamping iron plate, an electrical path is formed between the strain gauge wiring and the data acquisition line.

[0028] Specifically, the printed circuit board (PCB) base includes six sockets for connecting acquisition lines and fixing screws for attaching to the surface of the device under test (DUT), securing the bottom clamping plate and pressure plate thereon. The bottom clamping plate is made of engineering plastic and features six arc-shaped grooves with openings at their centers. Copper plates are installed on the inner walls of these grooves and are soldered to the circuitry of the PCB base. The pressure plate is made of metal and features six rubber protrusions made of insulating rubber. A rotating pin is installed at one end of the pressure plate, connecting it to the PCB base and allowing the pressure plate to rotate along the connection point on the PCB base.

[0029] The following steps can be followed when this device is in operation: S1. Install the strain gauge wiring structure; S2. Connect the data acquisition cables to the printed circuit board base in sequence and secure them with the fixing screws; S3. Fix the strain rose connection structure near the strain rose on the surface to be tested; specifically, for magnetic structures, fix the strain rose connection structure near the strain rose on the surface of the test piece by means of the strong magnet adsorption layer on the base of the printed circuit board base; for non-magnetic structures, fix the strain rose connection structure near the strain rose on the surface of the test piece by means of the foam layer on the base of the printed circuit board base. S4. Place the strain gauge wires sequentially into the arc-shaped groove above the bottom plate; S5. Rotate the clamping iron plate to make the strong magnet on the clamping iron plate and the strong magnet on the card plate on the printed circuit board base attract each other, so that the bottom card plate and the clamping iron plate are clamped and connected, and an electrical path is formed between the strain gauge wiring and the data acquisition line. S6. Connect the resistance measuring device to the printed circuit board base, turn on the resistance measuring device switch to measure the wiring resistance of the strain gauge connection. If the resistance is within the design range of 120±1 ohms, turn off the resistance measuring device switch and start the strain gauge measurement.

[0030] The connection method of the present invention fully considers the connection characteristics of strain gauge wiring and data acquisition lines. Its connection method is simple, the structure is reusable, and no soldering is required, which can significantly reduce the connection time and workload.

[0031] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications or substitutions should be considered within the scope of protection of the present invention.

Claims

1. A strain gauge splice structure for temporary quick-connection, characterized in that: The strain gauge wiring structure includes a printed circuit board base, which comprises a data acquisition line fixing part and a strain gauge wiring fixing part. The data acquisition line fixing part includes several acquisition line connection holes, each with a corresponding fixing screw for fixing the data acquisition line installed inside the connection hole. The strain gauge wiring fixing part includes a bottom clamping plate and a corresponding clamping plate. One end of the bottom clamping plate and the clamping plate are rotatably connected by a rotating pin. The bottom clamping plate has several copper plate grooves, each corresponding to a data acquisition line connection hole. The clamping plate has rubber protrusions that mate with the copper plate grooves. The strain gauge wiring is installed in the copper plate grooves. Through the clamping fit between the bottom clamping plate and the clamping plate, an electrical path is formed between the strain gauge wiring and the data acquisition line.

2. The strain gauge splice structure for temporary quick connection according to claim 1, characterized in that: The printed circuit board base contains a power circuit. The bottom plate is made of engineering plastic and has several arc-shaped grooves. Each groove contains a copper plate, forming a copper plate groove. The copper plate is connected to the power circuit by soldering.

3. The strain gauge splice structure for temporary quick connection according to claim 1, characterized in that: The main body of the clamping plate is made of iron plate, and the rubber ridge is a raised arc shape, which is made of insulating rubber.

4. The strain gauge splice structure for temporary quick connection according to claim 1, characterized in that: One end of the bottom plate and one end of the pressing iron plate form a rotatable end. The other end of the bottom plate is provided with a strong magnet for the plate, and the other end of the pressing iron plate is provided with a strong magnet for the iron plate that cooperates with the strong magnet for the plate. The strong magnet for the plate and the strong magnet for the iron plate attract each other, so that the bottom plate and the pressing iron plate are pressed and engaged.

5. The strain gauge splice structure for temporary quick connection according to claim 1, characterized in that: The data acquisition cable fixing part has 6 parallel acquisition cable connection holes with gaps between adjacent acquisition cable connection holes. The bottom plate has 6 copper plate grooves corresponding to the acquisition cable connection holes, and the pressing iron plate has 6 rubber protrusions corresponding to the copper plate grooves.

6. The strain gauge splice structure for temporary quick connection according to claim 5, characterized in that: The data acquisition cable connection holes are evenly distributed inside the data acquisition cable fixing part, and the gap between adjacent data acquisition cable connection holes is 1-5cm.

7. The strain gauge splice structure for temporary quick connection according to claim 1, characterized in that: The bottom of the printed circuit board base is equipped with a stabilizing component, which consists of a foam layer and a strong magnetic adsorption layer for the base.

8. The method of using the strain gauge splice structure for temporary quick connection according to claim 1, characterized in that: The usage method includes the following steps: a) Install the strain gauge wiring structure; b) Connect the data acquisition lines to the printed circuit board base in sequence and fix them with fixing screws; c) Fix the strain gauge connection structure near the strain gauge on the surface to be tested. d. Place the strain gauge wires into the arc-shaped groove above the bottom plate in sequence; e. Rotate the clamping plate so that the strong magnet on the clamping plate and the strong magnet on the plate on the printed circuit board base attract each other, so that the bottom plate and the clamping plate are clamped and connected, and an electrical path is formed between the strain gauge wires and the data acquisition lines. f. Connect the resistance measuring device to the printed circuit board base, turn on the resistance measuring device switch to measure the wiring resistance of the strain gauge connection. If the resistance is within the design range of 120±1 ohms, turn off the resistance measuring device switch and start the strain gauge measurement.

9. A method of using a strain gauge splice connection structure for temporary quick connection according to claim 8, characterized in that: In step c, for magnetic structures, the strain rose connection structure is fixed to the vicinity of the strain rose on the surface of the test piece by means of the strong magnet adsorption layer on the base of the printed circuit board base. For non-magnetic structures, the strain rose connection structure is fixed near the strain rose on the surface of the test piece by a foam layer located on the base of the printed circuit board.

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