A kind of electric heating wire pressure detection device

Abstract

The utility model provides a kind of electric heating wire pressure resistance detection device.The conventional pressure resistance detection device is tested by limit pressure, until it is damaged, but this method cannot detect the electric heating wire that has been damaged but not completely broken, these " work with injury " electric heating wire will become future fault point, therefore, to make detection effect more comprehensive.The electric heating wire pressure resistance detection device, including rack, rack center position is equipped with the support seat for supporting electric heating wire, support seat upper installation has pressure mechanism, pressure mechanism includes push rod motor, push rod motor is vertically downward installed on rack, the stem of push rod motor is equipped with mounting piece, mounting piece is equipped with the anvil corresponding with support seat, pressure sensor is also installed between anvil and mounting piece, linear displacement sensor is installed in mounting piece side, support seat two sides are equipped with main grating and indicating grating respectively.The utility model compared with conventional pressure resistance detection device detection precision is high, not only can carry out simple pressure resistance passability test, but also can realize to the quantitative quality evaluation of electric heating wire mechanics performance, significantly improve detection efficiency and product quality control level.

Description

Technical Field

[0001] This utility model belongs to the field of testing technology and relates to a heating wire withstand voltage testing device. Background Technology

[0002] Heating wires, as components that convert electrical energy into heat energy, are widely used in many products such as electric blankets, electric heaters, electric kettles, ovens, and industrial heating equipment. If microcracks or internal damage exist in the heating wires during the manufacturing process, they are prone to breakage under assembly pressure, resulting in products that are damaged from the moment they leave the factory. Pressure resistance testing can screen out these defective semi-finished products, which requires specialized pressure resistance testing devices. Traditional pressure resistance testing devices test the wires under extreme pressure until they break, but this method cannot detect heating wires that are damaged but not completely broken. These "damaged" heating wires will become future failure points. Therefore, it is necessary to design a pressure resistance testing device for heating wires to achieve more comprehensive testing results. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a heating wire withstand voltage testing device.

[0004] The objective of this utility model can be achieved through the following technical solution: A heating wire pressure resistance testing device, comprising a frame, characterized in that a support base for supporting the heating wire is installed at the center of the frame, a pressure applying mechanism is installed above the support base, the pressure applying mechanism includes a push rod motor, the push rod motor is vertically mounted downward on the frame, an mounting component is installed on the rod of the push rod motor, a pressure head corresponding to the support base is installed on the mounting component, a pressure sensor is also installed between the pressure head and the mounting component, a linear displacement sensor is installed on the side of the mounting component, and a main grating and an indicator grating are respectively installed on both sides of the support base.

[0005] The working principle of this utility model is as follows: The heating wire to be tested is placed on the support base, and the pressure head is pushed out by the push rod motor to fit tightly against the upper wall of the heating wire. Then, the push rod motor is controlled to apply linear pressure to the heating wire. During this process, pressure data is collected by the pressure sensor and deformation data of the heating wire is collected by the linear displacement sensor. The deformation of the heating wire before and after the pressure test is recorded by the main grating and the indicator grating. The data collected by the linear displacement sensor is combined for more accurate analysis and evaluation.

[0006] The pressure head is made of insulating material, and its bottom is machined with an arc-shaped or V-shaped groove that matches the shape of the heating wire.

[0007] The above structure provides specific limitations on the material and structure of the pressure head, making it more suitable for heating wires, avoiding damage and ensuring uniform force application.

[0008] The mounting component and the pressure head are connected by a connector, which is fixedly mounted on the mounting component, and the pressure head is mounted on the connector via a quick-release structure.

[0009] The above structure makes it easy to replace pressure heads of different sizes.

[0010] The measuring axis of the linear displacement sensor is parallel to the direction of movement of the push rod motor rod and is fixedly connected to the mounting component.

[0011] The above structure ensures measurement accuracy.

[0012] The main grating and the indicator grating constitute a grating ruler, which is used to detect the deformation of the heating wire during the pressure process.

[0013] A control console is also installed next to the frame, and the push rod motor, pressure sensor, linear displacement sensor and grating ruler are all electrically connected to the control console.

[0014] Using the above structure, the control console receives sensor signals and controls the push rod motor to operate according to a preset pressure or displacement program.

[0015] Compared with existing technologies, this heating wire pressure resistance testing device has the following advantages: Compared with traditional pressure resistance testing devices, this utility model has higher testing accuracy. It can not only perform simple pressure resistance pass tests, but also realize quantitative quality assessment of the mechanical properties of the heating wire, significantly improving testing efficiency and product quality control level. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a block diagram of the main pressure-applying structure of this utility model.

[0018] In the diagram, 1 is the frame; 2 is the support base; 3 is the push rod motor; 4 is the mounting component; 5 is the pressure sensor; 6 is the linear displacement sensor; 7 is the main grating; 8 is the indicator grating; 9 is the control console; and 10 is the pressure head. Detailed Implementation

[0019] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0020] like Figure 1-2As shown, this heating wire pressure resistance testing device includes a frame 1. A support base 2 for supporting the heating wire is installed at the center of the frame 1. A pressure applying mechanism is installed above the support base 2. The pressure applying mechanism includes a push rod motor 3, which is vertically mounted on the frame 1. A mounting part 4 is installed on the rod of the push rod motor 3. A pressure head 10 corresponding to the support base 2 is installed on the mounting part 4. A pressure sensor 5 is also installed between the pressure head 10 and the mounting part 4. A linear displacement sensor 6 is installed on the side of the mounting part 4. A main grating 7 and an indicator grating 8 are respectively installed on both sides of the support base 2.

[0021] In this invention, the frame 1 serves as the foundation of the entire device. It is made of welded steel or cast iron and has sufficient rigidity and stability to ensure that the testing accuracy is not affected by its own deformation during the testing process.

[0022] In this utility model, the support base 2 is fixedly installed at the center of the workbench surface of the frame 1 by bolts.

[0023] In this invention, the pressure sensor 5 is an existing product. When the push rod motor 3 presses down, the pressure on the pressure head 10 is directly transmitted to the pressure sensor 5, thereby measuring the pressure value applied to the heating wire in real time and accurately.

[0024] In this invention, the linear displacement sensor 6 adopts an existing magnetostrictive displacement sensor, whose measuring axis is strictly parallel to the movement direction of the rod of the push rod motor 3, and is used to detect the vertical displacement of the pressure head 10 in real time; the magnetic rod of the sensor is integrated at the indicator grating 8.

[0025] The pressure head 10 is made of insulating material, and its bottom is machined with an arc-shaped or V-shaped groove that matches the shape of the heating wire.

[0026] The mounting component 4 and the pressure head 10 are connected by a connector. The connector is fixedly installed on the mounting component 4, and the pressure head 10 is installed on the connector through a quick-release structure.

[0027] The quick-release structure in this utility model adopts the existing slot-type structure.

[0028] The measuring axis of the linear displacement sensor 6 is parallel to the direction of movement of the rod of the push rod motor 3 and is fixedly connected to the mounting part 4.

[0029] The main grating 7 and the indicator grating 8 constitute a grating ruler, which is used to detect the deformation of the heating wire during the pressure process.

[0030] In this invention, the main grating 7 and the indicator grating 8 adopt existing grating ruler structures. A control console 9 is also installed next to the frame 1. The push rod motor 3, pressure sensor 5, linear displacement sensor 6 and grating ruler are all electrically connected to the control console 9.

[0031] The working principle of this utility model is as follows: The heating wire to be tested is placed on the support base 2, and the pressure head 10 is pushed out by the push rod motor 3 to fit tightly against the upper wall of the heating wire. Then, the push rod motor 3 is controlled to apply linear pressure to the heating wire. During this process, pressure data is collected by the pressure sensor 5 and deformation data of the heating wire is collected by the linear displacement sensor 6. The deformation of the heating wire before and after the pressure test is recorded by the main grating 7 and the indicator grating 8. The data collected by the linear displacement sensor 6 is combined for more accurate analysis and evaluation.

[0032] In this invention, the various mechanisms are connected and driven using existing technologies, and synchronous control is achieved through the console 9.

[0033] All of the above components are general standard parts or components known to those skilled in the art. Their structure and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0034] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A heating wire withstand voltage testing device, comprising a frame (1), characterized in that, A support base (2) for supporting the heating wire is installed at the center of the frame (1). A pressure mechanism is installed above the support base (2). The pressure mechanism includes a push rod motor (3). The push rod motor (3) is installed vertically downward on the frame (1). An installation part (4) is installed on the rod of the push rod motor (3). A pressure head (10) corresponding to the support base (2) is installed on the installation part (4). A pressure sensor (5) is also installed between the pressure head (10) and the installation part (4). A linear displacement sensor (6) is installed on the side of the installation part (4). A main grating (7) and an indicator grating (8) are installed on both sides of the support base (2).

2. The heating wire withstand voltage testing device according to claim 1, characterized in that, The pressure head (10) is made of insulating material, and its bottom is machined with an arc-shaped or V-shaped groove that matches the shape of the heating wire.

3. The heating wire withstand voltage testing device according to claim 1, characterized in that, The mounting component (4) and the pressure head (10) are connected by a connector. The connector is fixedly installed on the mounting component (4), and the pressure head (10) is installed on the connector through a quick-release structure.

4. The heating wire withstand voltage testing device according to claim 1, characterized in that, The measuring axis of the linear displacement sensor (6) is parallel to the movement direction of the rod of the push rod motor (3) and is fixedly connected to the mounting part (4).

5. The heating wire withstand voltage testing device according to claim 1, characterized in that, The main grating (7) and the indicator grating (8) constitute a grating ruler, which is used to detect the deformation of the heating wire during the pressure process.

6. The heating wire withstand voltage testing device according to claim 1, characterized in that, A control console (9) is also installed next to the frame (1), and the push rod motor (3), pressure sensor (5), linear displacement sensor (6) and grating ruler are all electrically connected to the control console (9).

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