Locking iron type close contact force sensor

Abstract

The utility model provides a kind of lock iron type close force sensor, including sensor main body, the appearance of sensor main body adopts lock iron shape, one side of the sensor main body is equipped with pressure-bearing inclined surface, the both sides of the sensor main body are equipped with step, step area forms groove, the deformation of increasing deformation area, one of which is sensor patch area and wiring groove, another groove is deformation area, the bottom of the sensor main body is opened, and the outgoing line hole is passed through conductor in the outgoing line hole.The sensor of the utility model is directly integrated in lock iron body, without changing existing installation structure, field installation is simple and fast, avoid the trouble of replacing lock iron or additional sensor installation.The structure design of step and groove effectively amplifies the deformation of lock iron when force is received, improves signal output intensity and measurement accuracy, overall structure is compact, and function is reliable.

Description

Technical Field

[0001] This utility model relates to the field of road signal equipment technology, and in particular to a locking iron type tight contact force sensor. Background Technology

[0002] In railway turnout switching equipment, the locking iron is a key component ensuring a tight fit between the turnout switch rail and the stock rail, and its stress state directly affects train operation safety. Currently, monitoring the fit force typically involves using external sensors, requiring a separate force sensor to be installed near the locking iron. This is not only complex and space-consuming, but also prone to signal distortion due to inaccurate installation location or structural interference, affecting monitoring accuracy and reliability. Furthermore, the external sensor itself is susceptible to interference from field vibrations, temperature changes, and mechanical stress, resulting in poor long-term stability and inconvenient maintenance. Utility Model Content

[0003] In view of this, in order to solve the problems existing in the technical background, this utility model proposes a locking iron type tight-fitting force sensor. Specifically, it includes the following:

[0004] A locking iron type contact force sensor includes a sensor body, the sensor body being shaped like a locking iron, a pressure-bearing inclined surface on one side of the sensor body, and steps on both sides of the sensor body, the stepped areas forming grooves to increase the deformation of the deformation area, one of the grooves being the sensor patch area and wiring groove, and the other groove being the deformation area, the bottom of the sensor body having a wire outlet hole through which a wire passes.

[0005] Furthermore, after the wires are assembled, a sealing ring is filled into the groove to improve the protection performance of the sensor chip and circuit.

[0006] The above technical solution has the following beneficial effects:

[0007] The sensor of this invention is directly integrated into the locking iron body, without requiring changes to the existing installation structure. On-site installation is simple and quick, avoiding the hassle of replacing the locking iron or adding an additional sensor. The stepped and grooved structural design effectively amplifies the deformation of the locking iron under stress, improving signal output strength and measurement accuracy. The overall structure is compact and the function is reliable. Attached Figure Description

[0008] Figure 1 This is a three-dimensional structural diagram of a locking iron-type tight-fitting force sensor according to the present invention;

[0009] Figure 2 A schematic diagram of the top surface structure of a locking iron-type tight-fitting force sensor of this utility model;

[0010] Figure 3This is a schematic diagram of the right side structure of a locking iron-type tight-fitting force sensor according to the present invention;

[0011] Figure 4 This is a schematic diagram of the left side structure of a locking iron-type tight-fitting force sensor according to the present invention;

[0012] In the diagram: 1-Pressure-bearing inclined surface; 2-Wire; 3-Step; 4-Deformation area; 5-Sensor patch area; 6-Wiring groove; 7-Outlet hole. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] See Figures 1 to 4 The lock-on iron type contact force sensor shown includes a sensor body, which is shaped like a lock-on iron. One side of the sensor body is provided with a pressure-bearing inclined surface 1, and both sides of the sensor body are provided with steps 3. The step 3 area forms a groove to increase the deformation of the deformation area 4. One groove is the sensor patch area 5 and the wiring groove 6, and the other groove is the deformation area 4. The bottom of the sensor body has a wire outlet hole 7, and a wire 2 passes through the wire outlet hole 7.

[0015] Steps 3 are machined on both sides of the inclined surface of the locking iron to increase the deformation of the deformation area 4. When pressure is applied to the inclined surface, the deformation is transmitted to the back of the locking iron. Grooves are machined on both sides of the crossbeam on the back of the locking iron for attaching the strain sensor chip. The grooves can also amplify the transmitted deformation and improve the measurement accuracy of the sensor. Wiring grooves 6 are machined on the back of the locking iron to collect and output the data of the strain gauge. A wire hole 7 is machined at the bottom. The wire 2 is directly inserted into the locking force groove to supply power to the sensor and transmit signals. After the sensor and wire 2 are assembled, a sealing ring is filled in the groove to improve the protection performance of the sensor chip and circuit.

[0016] In practical use, when the pressure-bearing surface of the locking iron is subjected to external pressure, the step 3 machined on the locking iron will undergo micro-deformation. This deformation is transmitted to the strain gauge sensor chip installed in the deformation area 4, thereby generating a corresponding electrical signal. High-precision strain gauges are mounted in the groove of the patch area. The resistance value of the strain gauge changes as the substrate deforms, thus converting the mechanical deformation into a change in electrical signal. The signal is collected through the wires 2 arranged in the wiring groove 6 and led out to the external signal acquisition unit through the outlet hole 7 at the bottom.

[0017] The wire 2 passes through the internal wiring groove 6, avoiding mechanical damage and interference caused by exposure. After assembly, the sealing ring or sealant filling the groove further protects the sensor chip and circuit, enhancing the overall long-term reliability in harsh environments such as humidity and dust. While achieving real-time and accurate monitoring of the contact force, this sensor completely maintains the original installation dimensions and locking function of the locking iron, achieving a high degree of integration between the sensing function and the original structure.

[0018] The basic principles and main features of this utility model have been described above. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are only illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from the spirit and scope of this utility model. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A locking iron-type tight-fitting force sensor, comprising a sensor body, characterized in that, The sensor body is shaped like a locking iron. One side of the sensor body is provided with a pressure-bearing inclined surface (1). The two sides of the sensor body are provided with steps (3). The step area forms a groove to increase the deformation of the deformation area (4). One of the grooves is the sensor patch area (5) and the wiring groove (6). The other groove is the deformation area (4). The bottom of the sensor body has a wire outlet hole (7). The wire (2) passes through the wire outlet hole (7).

2. The locking iron-type tight-fitting force sensor according to claim 1, characterized in that, After the wire (2) is assembled, a sealing ring is filled in the groove to improve the protection performance of the sensor chip and circuit.

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