Contact net balance weight position detection device

Abstract

The utility model discloses an overhead line system balance weight position detection device, which relates to the field of overhead line system monitoring and is used for preventing the device from falling off from a mooring rope. The device comprises a device shell, the device shell comprises a main shell body and a secondary shell body, and the main shell body and the secondary shell body are circular; a first gap is formed in the main shell along one radius, and a sensor circuit is arranged in an inner cavity of the main shell; the secondary shell is arranged on the periphery of the main shell in a protruding mode, the outer protruding position is located at the position opposite to the first notch, and a distance sensor is arranged in an inner cavity of the secondary shell and connected to a sensor circuit. A long-strip-shaped blind hole is designed in the top face of the main shell and is formed in the direction perpendicular to the first notch, and the blind hole stretches across the first notch; the detection device further comprises a bolt body, and the shape and the size of the bolt body are matched with those of the blind hole. The device can be prevented from falling off from the balance weight only provided with the mooring rope, and can work for a long time.

Description

Technical Field

[0001] The utility model relates to a contact network monitoring facility, in particular to a contact network weight position detection device. Background Art

[0002] In the railway overhead line, the transmission line is suspended above the rails by a cable. Affected by thermal expansion and contraction, the tension of the cable will change with the ambient temperature, causing the sag of the suspended transmission line to decrease or increase. In order to control the sag height of the transmission line to always maintain a relatively stable position, a contact network weight (referred to as a weight) is connected to the end of each section of the cable to control the tension of the cable, thereby maintaining the sag of the transmission line.

[0003] The weight needs to have a certain mass to hold the wire. In addition, the weight must be suspended for a long time to maintain the pulling force on the wire. If the weight touches the ground, it will lose the pulling force on the wire and cannot maintain further pulling force on the wire. Therefore, monitoring facilities are needed to detect the position of the weight to prevent it from touching the ground.

[0004] The current detection device, such as the contact network compensation device movement monitoring device disclosed in CN218929258U, can detect the position of the weight with high precision, but it requires limit rods to be installed on both sides of the weight to prevent the detection device from detaching. For a weight without limit rods on both sides, the detection device is prone to shaking due to the influence of wind images or vibrations caused by the passing of trains, and because the weight of the detection device is usually not too heavy and is installed on the top layer, it is easy to fall off the cable over time. Utility Model Content

[0005] The purpose of the utility model is to provide a contact network weight position detection device to solve the above-mentioned problems, so as to prevent the detection device from falling off from the weight which has only a cable.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A device for detecting the position of a catenary weight comprises a device housing, the device housing comprising a main housing and a secondary housing; the main housing is circular and has a first notch along a radius, the first notch penetrates the main housing in the thickness direction, a sensor circuit is arranged in the inner cavity of the main housing; the secondary housing is semicircular and convex and is arranged on the outer periphery of the main housing, the convex position is located at a position opposite to the first notch, a distance sensor is arranged in the inner cavity of the secondary housing, and the distance sensor is connected to the sensor circuit;

[0008] The top surface of the main shell is designed with a long strip blind hole, which is opened in a direction perpendicular to the first notch and spans the first notch; the detection device also includes a bolt body, and the shape and size of the bolt body match the blind hole.

[0009] After the device housing is installed on the cable of the weight, the bolt body is inserted into the blind hole to limit the range of movement of the cable in the first notch, thereby preventing the device housing from being separated from the cable.

[0010] Furthermore, the blind hole and the bolt body are both in a rectangular shape.

[0011] Furthermore, the blind hole and the bolt body are both semi-cylindrical in shape, and the axial direction of the blind hole is parallel to the axial direction of the main shell.

[0012] Furthermore, the blind hole and the bolt body are both semi-cylindrical in shape, and the axial direction of the blind hole is perpendicular to the axial direction of the main shell.

[0013] Furthermore, the distance from the position where the blind hole is opened to the axis of the main shell is between 1 / 4 and 1 / 2 of the radius length of the main shell.

[0014] Furthermore, a solar panel is embedded and installed on the top surface of the main shell, and the solar panel is connected to the sensor circuit.

[0015] Furthermore, the bottom surface of the secondary housing is designed to be concave at the installation position of the distance sensor.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0017] The contact network weight position detection device of this design is designed with a long blind hole on the channel (i.e., the first notch) where the detection device is installed. After the detection device is installed on the cable through the channel, a bolt body matching the blind hole is inserted into the blind hole, thereby limiting the range of movement of the cable in the first notch. Even if the detection device shakes violently, it will not fall off the cable. The vehicle inspection device of this design also takes into account the needs of field operations. Taking advantage of the condition of being installed on the top of the weight, a solar panel is installed on the top surface, allowing the detection device to work for a long time. In addition, the concave design of the sensor installation location can prevent the detection result of the weight position from being affected by water accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 , Figure 2 , Figure 3 They are the structural diagrams of three types of contact network weight position detection devices.

[0019] Figure 4It is a schematic diagram of the contact network weight position detection device installed on the cable.

[0020] Figure 5 It is a bottom view of the main shell.

[0021] In the figure, 1 is the main shell, 2 is the secondary shell, 3 is the first notch, 4 is the blind hole, 5 is the bolt body, 6 is the solar cell panel, 7 is the installation place of the distance sensor, 8 is the cable, and 9 is the weight. DETAILED DESCRIPTION

[0022] The utility model is described in detail below in conjunction with the accompanying drawings.

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0024] The contact network weight position detection device includes a device housing, which includes a main housing 1 and a secondary housing 2. The main housing 1 is used to place the sensor circuit, which usually includes a distance measurement circuit, a comparison circuit and a wireless communication circuit; the secondary housing 2 is used to place the distance sensor, usually a laser, to obtain a distance measurement signal, transmit the distance measurement signal to the sensor circuit, and measure the distance. The comparison circuit compares the calculated distance with the configured threshold, and generates an alarm signal when the threshold is exceeded, and the alarm is sent to the remote end via the wireless communication circuit. Since the detection device is installed on the top of the weight 9, it needs to extend out of the side of the weight 9 to measure the distance to the ground and detect the position of the weight. Therefore, the secondary housing 2 is designed to protrude from the main housing 1.

[0025] Specifically, the main shell 1 is circular and has a first notch 3 along a radius. The first notch 3 penetrates the main shell 1 in the thickness direction to form an installation channel. The sensor circuit is arranged in the inner cavity of the main shell 1. The first notch 3 is used as a channel for the detection device to be installed on the cable 8. The secondary shell 2 is semicircular and convexly arranged on the outer periphery of the main shell 1. The convex position is located at a position opposite to the first notch 3, that is, the position where the extension line of the first notch 3 intersects with the outer periphery of the main shell 1. A distance sensor is arranged in the inner cavity of the secondary shell 2, and the distance sensor is connected to the sensor circuit to transmit a distance measurement signal to it.

[0026] In addition, the top surface of the main housing 1 is designed with a long strip blind hole 4, which is opened in a direction perpendicular to the first notch 3, and the blind hole 4 spans the first notch 3, that is, notches are formed on both sides of the width of the first notch 3. The detection device also includes a bolt body 5, the shape and size of the bolt body 5 are matched with the blind hole 4, so that the bolt body 5 can be installed in the blind hole 4 to play a limiting role.

[0027] In one embodiment, Figure 1 As shown, the blind hole 4 and the bolt body 5 are both designed to be rectangular.

[0028] In another embodiment, if Figure 2 As shown, the blind hole 4 and the bolt body 5 are both designed to be semi-cylindrical, and the axial direction of the blind hole 4 is designed to be parallel to the axial direction of the main housing 1 .

[0029] In another embodiment, if Figure 3 As shown, the blind hole 4 and the bolt body 5 are both designed to be semi-cylindrical, and the axial direction of the blind hole 4 is designed to be perpendicular to the axial direction of the main housing 1 .

[0030] Of course, the shapes of the blind hole 4 and the bolt body 5 can also be designed to be other types. Here, only three examples are given. For example, the blind hole 4 (the bolt body 5 is the same) can also be designed to be U-shaped, V-shaped, C-shaped, etc.

[0031] like Figure 4 The schematic diagram shows that the detection device corresponding to the blind hole 4 designed in rectangular shape is installed on the cable 8. The detection device is inserted into the cable 8 through the first notch 3, and then the rectangular bolt body 5 is placed into the blind hole 4 to complete the installation.

[0032] In addition, in order to avoid the possibility of tilting caused by the detection device moving too long on the cable 8, the blind hole 4 is opened at a position not far from the axis of the main housing 1. In some embodiments, the distance from the position where the blind hole 4 is opened to the axis of the main housing 1 is between 1 / 4 and 1 / 2 of the radius of the main housing 1. The reserved degree of freedom can facilitate the adjustment of the distance between the distance sensor and the side of the weight 9 when there is an irregular weight 9 below.

[0033] Considering that most of the contact network is in the field environment, and the number of weights arranged is extremely large, in order to reduce the maintenance work as much as possible and extend the service life of the detection device, a solar panel 6 is embedded and installed on the top surface of the main shell 1, and the solar panel 6 is connected to the sensor circuit. Specifically, a blind hole 4-shaped installation groove is opened on the top surface of the main shell 1, and a wiring hole is opened at the bottom of the installation groove. The wires of the solar panel 6 enter the inner cavity of the main shell 1 through the wiring hole and are connected to the sensor circuit (power supply circuit). After the solar panel 6 is embedded and installed in the installation groove, the wiring hole can be covered to prevent water from entering.

[0034] Considering that the field is easily affected by rain and sand, and the distance sensor is also sensitive to wind, sand and rain, in order to avoid these factors affecting the measurement results of the weight position, Figure 5As shown, the bottom surface of the housing is designed to be concave at the installation position 7 of the distance sensor, so that even if it rains or snows, rain water will not accumulate on the optical path of the distance sensor.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for detecting the position of a catenary weight, comprising a device housing, the device housing comprising a main housing and a secondary housing; the main housing is circular and has a first notch along a radius, the first notch penetrates the main housing in the thickness direction, a sensor circuit is arranged in the inner cavity of the main housing; the secondary housing is semicircular and convex and is arranged on the outer periphery of the main housing, the convex position is located at a position opposite to the first notch, a distance sensor is arranged in the inner cavity of the secondary housing, and the distance sensor is connected to the sensor circuit; It is characterized in that The top surface of the main shell is designed with a long blind hole, which is opened in a direction perpendicular to the first notch and spans the first notch; the detection device also includes a bolt body, and the shape and size of the bolt body match the blind hole.

2. The contact network weight position detection device according to claim 1, characterized in that: The blind hole and the bolt body are both in a rectangular shape.

3. The contact network weight position detection device according to claim 1, characterized in that: The blind hole and the bolt body are both semi-cylindrical in shape, and the axial direction of the blind hole is parallel to the axial direction of the main shell.

4. The contact network weight position detection device according to claim 1, characterized in that: The blind hole and the bolt body are both semi-cylindrical in shape, and the axial direction of the blind hole is perpendicular to the axial direction of the main shell.

5. The contact network weight position detection device according to any one of claims 1 to 4, characterized in that: The distance from the position where the blind hole is opened to the axis of the main shell is between 1 / 4 of the radius length and 1 / 2 of the radius length of the main shell.

6. The contact network weight position detection device according to claim 1, characterized in that: A solar panel is embedded and installed on the top surface of the main shell, and the solar panel is connected to the sensor circuit.

7. The contact network weight position detection device according to claim 1, characterized in that: The bottom surface of the secondary housing is designed to be concave at the installation position of the distance sensor.

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