A power line anchor section tension state monitoring device

Abstract

The present application relates to power supply line tension monitoring technical field, especially a kind of power supply line anchor section tension state monitoring device, including monitoring main body, for inverted T shape structure, including two T-shaped side plates of parallel arrangement, two T-shaped side plates middle part upper end is fixed with middle plate, middle plate is vertically fixed with fixed rod upwards, fixed rod upper end is equipped with pressure sensor, the outside of the left and right ends of two T-shaped side plates is fixed with limit plate, displacement sensor is installed on the middle plate;Cap mechanism, lift and slide in the upper end of the middle part of monitoring main body, push down thread, cap mechanism includes the lifting frame of sleeve sliding on fixed rod, the lower end of lifting frame is equipped with middle shaft, middle shaft penetrates two T-shaped side plates, spring one is arranged between lifting frame and pressure sensor;Support mechanism, two are provided, two support mechanisms are symmetrically rotated in the two ends of monitoring main body, the thread of middle shaft two sides is symmetrically supported, locking mechanism.The present application is convenient to detect, can real-time monitoring, and can be quickly installed.

Description

Technical Field

[0001] This invention relates to the field of power line tension monitoring technology, and in particular to a power line anchor section tension status monitoring device. Background Technology

[0002] Power line anchor sections are fixed-length segments divided according to the principle of mechanical and electrical independence. The ends are fixed to anchor posts via compensation devices to reduce the sag of the power line, thereby effectively limiting the fault range, achieving automatic tension compensation, and facilitating segmented power supply maintenance. Among power line anchor sections, the contact wire anchor section is the most widely used and standardized. Affected by changes in outdoor temperature, power line wires expand and contract with temperature changes, and external forces can cause variations in the tension of the power line. A decrease in power line tension can affect the safe operation of the line and trains. Therefore, in practical work, it is necessary to periodically test the conductor tension and adjust the counterweights on the tension compensation device to maintain a constant conductor tension when changes occur.

[0003] Currently, there are generally two existing methods for tension detection:

[0004] 1. Manually using a handheld tension tester to detect conductor tension is not only cumbersome, but also cannot achieve real-time monitoring of conductor tension.

[0005] 2. First, disconnect the power supply line wires, then pass the power supply line wires through the detection device, and then reconnect the wires. Although this method can monitor the wire tension in real time, the installation process is time-consuming and labor-intensive, affecting work efficiency.

[0006] Therefore, there is a need for a power line anchor section tension status monitoring device that is easy to detect, can be monitored in real time, and can be installed quickly. Summary of the Invention

[0007] The purpose of this invention is to provide a power line anchor section tension status monitoring device to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A power line anchor section tension status monitoring device, comprising

[0010] The monitoring body has an inverted T-shaped structure, including two T-shaped side plates arranged side by side. A middle plate is fixed to the upper part of the middle of the two T-shaped side plates. A fixing rod is fixed vertically upward on the middle plate. A pressure sensor is provided at the upper end of the fixing rod. Limit plates are fixed to the outer sides of the left and right ends of the two T-shaped side plates. A displacement sensor is installed on the middle plate.

[0011] The pressure mechanism is a lifting and sliding mechanism located at the upper part of the middle of the monitoring body. It pushes the line downward. The pressure mechanism includes a lifting frame that slides on a fixed rod. The lower end of the lifting frame is provided with a central shaft, which passes through two T-shaped side plates. A spring is provided between the lifting frame and the pressure sensor.

[0012] The support mechanism consists of two parts, which rotate symmetrically at both ends of the monitoring body to provide symmetrical support for the clues on both sides of the central axis. The support mechanism includes a support frame with internally rotating support wheels. One side of the support frame extends towards the central axis with a rotating arm plate. The rotating arm plate is rotatably connected to one of the T-shaped side plates via a rotating shaft. Both sides of the support frame are provided with two locking holes.

[0013] There are four locking mechanisms, which are respectively installed on four limit plates. The locking mechanisms lock the support frame and the T-shaped side plate by inserting into the corresponding two locking holes.

[0014] Furthermore, a grooved wheel is coaxially provided on the central shaft.

[0015] Furthermore, the upper middle part of the lifting frame is threadedly connected to a threaded sleeve, which slides on the fixed rod and is pressed against the upper end of the spring.

[0016] Furthermore, a motor is installed on the side of the lifting frame, and a power gear is provided on the output shaft of the motor. A gear disc that meshes with the power gear is fixed at the upper end of the threaded sleeve.

[0017] Furthermore, the support wheel is provided with grooves.

[0018] Furthermore, the support frame is provided with an inclined seat, a support plate slides through the inclined seat, and an electric telescopic rod is installed between the support plate and the inclined seat.

[0019] Furthermore, the outer end of the rotating shaft is provided with a worm gear, and a second motor is installed on the T-shaped side plate on which the two rotating shafts are mounted. A worm is provided on the output shaft of the second motor, and the worm is located between the two worm gears and meshes with the two worm gears simultaneously.

[0020] Furthermore, the locking mechanism includes a slide that slides through the limiting plate, and the slide near the T-shaped side plate end is provided with two inserts that cooperate with the locking hole. The two inserts pass through the T-shaped side plate, and a spring is provided between the slide and the limiting plate.

[0021] Furthermore, the plug end of the insertion post is chamfered, and the support frame is provided with a guide plate at the corresponding lock hole.

[0022] Furthermore, an electromagnet is installed on the limiting plate, and an iron block corresponding to the electromagnet is provided on the slide.

[0023] The present invention has at least the following beneficial effects;

[0024] 1. During installation, the support frame is suspended below the T-shaped side plate via the rotating arm plate. At this time, there is a wire-clamping space between the support frame and the T-shaped side plate. This wire-clamping space is fastened onto the wire to be monitored. Then, the two support frames are rotated upward until they are locked between the two T-shaped side plates, so that the two support wheels are pressed against the bottom of the wire on both sides of the central shaft, thus completing the quick installation of the device onto the wire.

[0025] 2. During measurement and monitoring, the two support wheels form a horizontal support for the bottom of the line. The central axis is located above the line in the middle of the two support wheels. The line is pushed downward by the elastic force of the spring, causing the line to bend and deform. At this time, the force of the bending deformation of the line driven by the central axis is read by the pressure sensor, as well as the bending angle of the line. Based on trigonometric functions and force decomposition, the tension of the line can be calculated, which facilitates the detection of line tension and enables real-time monitoring. Attached Figure Description

[0026] Figure 1 and Figure 2 This is a schematic diagram of a power line anchor section tension state monitoring device for measurement and monitoring.

[0027] Figure 3 yes Figure 1 A schematic diagram of the cross-sectional structure;

[0028] Figure 4 This is a schematic diagram of the structure of a power line anchor section tension monitoring device when it is installed on the line;

[0029] Figure 5 This is a schematic diagram of the monitoring entity;

[0030] Figure 6 This is a schematic diagram of the pressure-pressing mechanism;

[0031] Figure 7 This is a structural diagram of two support mechanisms;

[0032] Figure 8 This is a structural diagram of the support mechanism;

[0033] Figure 9 This is a structural diagram of the support frame and the swing arm plate;

[0034] Figure 10 This is a schematic diagram of the locking mechanism;

[0035] Figure 11 This is a simplified diagram illustrating the force exerted on the thread during measurement.

[0036] In the picture:

[0037] Monitoring body 100; T-shaped side plate 110; middle plate 120; fixing rod 121; pressure sensor 130; displacement sensor 140; limit plate 150; electromagnet 151;

[0038] Top pressing mechanism 200; lifting frame 210; central shaft 220; grooved wheel 221; threaded sleeve 230; gear disc 231; spring 240; motor 250; power gear 251;

[0039] Support mechanism 300; support wheel 310; support frame 320; lock hole 321; guide plate 322; inclined seat 323; swing arm plate 330; swing shaft 340; worm gear 341; support plate 350; electric telescopic rod 351;

[0040] Motor 2 400; Worm gear 410;

[0041] Locking mechanism 500; slide 510; iron block 511; insert post 520; spring 2 530. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. 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.

[0043] Example 1, please refer to Figure 1-11A power line anchor section tension monitoring device includes a monitoring body 100, a pressing mechanism 200, a support mechanism 300, and a locking mechanism 500. The monitoring body 100 has an inverted T-shaped structure and includes two T-shaped side plates 110 arranged side by side. A middle plate 120 is fixed to the upper middle part of the two T-shaped side plates 110. A fixing rod 121 is vertically fixed to the middle plate 120. A pressure sensor 130 is provided at the upper end of the fixing rod 121. Limit plates 150 are fixed to the outer sides of the left and right ends of the two T-shaped side plates 110. A displacement sensor 140 is installed on the middle plate 120. The pressing mechanism 200 slides and rises at the upper middle part of the monitoring body 100 and pushes the anchor line downward. The pressing mechanism 200 includes a lifting frame 210 that slides on the fixing rod 121. A central shaft 220 is provided at the lower end of the lifting frame 210 and passes through the anchor. Two T-shaped side plates 110, a spring 240 between the lifting frame 210 and the pressure sensor 130; two support mechanisms 300 are provided, which rotate symmetrically at both ends of the monitoring body 100 to provide symmetrical support for the threads on both sides of the central axis 220. Each support mechanism 300 includes a support frame 320 with a support wheel 310 rotating inside. A rotating arm plate 330 extends from one side of the support frame 320 toward the central axis 220. The rotating arm plate 330 is rotatably connected to one of the T-shaped side plates 110 through a rotating shaft 340. Two locking holes 321 are provided on both sides of the support frame 320; four locking mechanisms 500 are provided, which are respectively installed on four limiting plates 150. The locking mechanisms 500 limit and lock the support frame 320 and the T-shaped side plate 110 by inserting into the corresponding two locking holes 321.

[0044] Specifically, during installation, the support frame 320 is first rotated out from within the two T-shaped side plates 110 and suspended below the T-shaped side plates 110 via the rotating arm plate 330. At this time, a wire-clamping space appears between the support frame 320 and the T-shaped side plates 110. This wire-clamping space is then fastened onto the wire to be monitored, so that the central shaft 220 is positioned above the wire and the two support wheels 310 are positioned below the wire. Then, the two support frames 320 are rotated upwards, so that the two support wheels 310 press against the bottom of the wire on both sides of the central shaft 220 until the support frame 320 is rotated between the two T-shaped side plates 110 and the locking mechanism 500 is inserted into the two locking holes 321 on both sides of the support frame 320, thereby achieving the limit locking between the support frame 320 and the T-shaped side plates 110 and completing the rapid installation of the device onto the wire.

[0045] Specifically, during measurement and monitoring, the two support wheels 310 of the installed device are symmetrically arranged about the center of the middle plate 120, forming horizontal support for the lower part of the thread. The central shaft 220 is located in the middle of the two support wheels 310 and is affected by the elastic force of the spring 240, pushing the thread between the two support wheels 310 downward, causing the thread to bend. This bending deformation is within the threshold of the thread bending deformation, avoiding any impact on the thread. At this time, the inclined thread between the central shaft 220 and the support wheels 310 forms the hypotenuse of a right triangle. By reading the elastic force of the spring 240 (i.e., the force of the central shaft 220 pushing the thread to bend) through the pressure sensor 130, as well as the bending angle of the thread deformation, the tension of the thread can be calculated based on trigonometric functions and force decomposition. This allows for quick installation of the device onto the thread, convenient detection of thread tension, and real-time monitoring.

[0046] The displacement sensor 140 is used to detect the position of the lifting frame 210 relative to the middle plate 120, thereby realizing the monitoring of the position of the central shaft 220. In conjunction with the constant distance between the central shaft 220 and the support wheel 310 in the horizontal direction, the deformation angle of the line can be obtained.

[0047] It should be noted that the support frame 320 has a U-shaped structure. The support wheel 310 rotates between the two side plates of the support frame 320 through the support shaft, thereby ensuring that the support frame 320 provides stable support for the support wheel 310 and that the support wheel 310 provides sufficient support for the line. The locking mechanism 500 is inserted into the two locking holes 321, so that the two side plates of the support frame 320 respectively form a limit with the two T-shaped side plates 110, so that the two T-shaped side plates 110 can provide stable support for the support frame 320.

[0048] In this embodiment, as Figure 6 As shown, a grooved wheel 221 is coaxially provided on the central shaft 220;

[0049] The grooved wheel 221 allows for better transmission of the elastic force of the spring 240, which in turn causes the clue to bend and deform. Furthermore, the groove on the edge of the grooved wheel 221 ensures stability when the grooved wheel 221 pushes the clue to deform, preventing the clue from moving axially on the grooved wheel 221 and affecting the monitoring results.

[0050] In this embodiment, initially, under the elastic force of spring 240, the lifting frame 210 slides downward on the fixed rod 121 and presses against the middle plate 120, so that the lower end of the central shaft 220 is located below the upper ends of the two support wheels 310. Thus, after the two support wheels 310 rotate to lock with the two T-shaped side plates 110, the elastic force of spring 240 can act on the thread, causing the thread to deform. However, when the tension of the thread is large, the elastic force of spring 240 may not be able to push the thread to deform, thus making it impossible to measure. Therefore, it is necessary to adjust the elastic force of spring 240.

[0051] like Figure 6 As shown, the upper middle part of the lifting frame 210 is threadedly connected to a threaded sleeve 230, which slides on the fixed rod 121 and is pressed against the upper end of the spring 240.

[0052] Specifically, by rotating the threaded sleeve 230, the threaded engagement between the threaded sleeve 230 and the upper end plate of the lifting frame 210 allows the threaded sleeve 230 to move axially within the lifting frame 210. This allows adjustment of the initial compression degree of the spring 240. Since the greater the compression degree of the spring 240, the greater the elastic force it generates, the threaded sleeve 230 can be rotated to move upward relative to the lifting frame 210, thereby compressing the spring 240, increasing the elastic force of the spring 240, and thus increasing the thrust on the line, causing the line to deform and completing the measurement and monitoring of the line tension.

[0053] In this embodiment, a motor 250 is installed on the side of the lifting frame 210, and a power gear 251 is provided on the output shaft of the motor 250. A gear disk 231 that meshes with the power gear 251 is fixed at the upper end of the threaded sleeve 230.

[0054] By starting the motor 250, the power gear 251 is driven to rotate, which in turn engages the gear disk 231 to drive the threaded sleeve 230 to rotate, causing the threaded sleeve 230 to move axially. At the same time, the gear disk 231 and the power gear 251 are engaged and slide relative to each other axially, thus forming an electric control of the spring 240.

[0055] In this embodiment, the support wheel 310 is provided with grooves. By setting the grooves, the thread can be limited when the support wheel 310 rotates upward, so as to prevent the thread from moving laterally with the support wheel 310 and affecting the tension measurement.

[0056] In this embodiment, in order to measure the tension of the thread, it is necessary to push the thread to bend and deform. When the degree of bending deformation of the thread is large, it will affect the thread. Therefore, it is necessary to ensure that the bending deformation of the thread is within the bending deformation threshold of the thread.

[0057] like Figure 7-8 As shown, the support frame 320 is provided with a slant seat 323, a support plate 350 slides through the slant seat 323, and an electric telescopic rod 351 is installed between the support plate 350 and the slant seat 323.

[0058] Specifically, by controlling the retraction of the electric telescopic rod 351, the support plate 350 can be pushed to slide on the inclined seat 323 and move closer to the central axis 220. This creates a barrier below the central axis 220, preventing the cable deformation position from exceeding the support plate 350, thus ensuring that the cable bending deformation remains within the cable bending deformation threshold. Initially, by controlling the extension of the electric telescopic rod 351, the support plate 350 slides into the inclined seat 323, thus preventing the support plate 350 from obstructing the cable from entering the cable jamming space during device installation.

[0059] Among them, the support plate 350 is provided with an elbow at the end near the central axis 220. After the support frame 320 is locked between the two T-shaped side plates 110, it is in a horizontal state, which ensures flat support and obstruction of the deformation of the line and avoids damage to the line.

[0060] Example 2, based on Example 1, describes how to control the upward rotation of the two support mechanisms 300:

[0061] like Figure 7 As shown, the outer end of the rotating shaft 340 is provided with a worm gear 341, and a motor 400 is installed on the T-shaped side plate 110 on the two rotating shafts 340. A worm 410 is provided on the output shaft of the motor 400, and the worm 410 is located between the two worm gears 341 and meshes with the two worm gears 341 at the same time.

[0062] By controlling the start of motor 400, the worm gear 410 is driven to rotate, thereby simultaneously engaging and driving the two worm wheels 341 to rotate in opposite directions. Then, the rotating shaft 340 drives the rotating arm plate 330 to rotate the support mechanism 300 to the locked state with the two T-shaped side plates 110, and then stops, thereby achieving electric control of the upward rotation of the two support mechanisms 300.

[0063] It should be noted that the rotating shaft 340 and the rotating arm plate 330 are fixedly connected. The rotating shaft 340 and the worm gear 341 can be connected by a one-way bearing. That is, the worm 410 can drive the worm gear 341 to drive the rotating arm plate 330 to rotate upward. When the locking mechanism 500 releases the locking of the support mechanism 300, the support mechanism 300 can automatically rotate downward and separate from the two T-shaped side plates 110.

[0064] Example 3, based on Example 2, provides a detailed description of how the locking mechanism 500 locks the support mechanism 300 and the T-shaped side plate 110:

[0065] like Figure 9-10As shown, the locking mechanism 500 includes a slide 510 that slides through the limiting plate 150. The slide 510 has two inserts 520 that cooperate with the locking hole 321 near the end of the T-shaped side plate 110. The two inserts 520 pass through the T-shaped side plate 110. A spring 530 is provided between the slide 510 and the limiting plate 150.

[0066] Specifically, during use, the elastic force of spring 530 pushes the insert 520 through the T-shaped side plate 110, causing the slide 510 to press against the T-shaped side plate 110. At this time, the end of the insert 520 away from the slide 510 protrudes from the T-shaped side plate 110, thus inserting into the lock hole 321, forming a lock between the support mechanism 300 and the T-shaped side plate 110. At the same time, each locking mechanism 500 is equipped with two inserts 520, so that the T-shaped side plate 110 is inserted into two lock holes 321 through the two inserts 520, ensuring the stability of the limit lock between the T-shaped side plate 110 and the support mechanism 300. When it is necessary for the support mechanism 300 to slide out from the two T-shaped side plates 110, it is only necessary to push the slide 510 to make the two inserts 520 slide out from the lock hole 321.

[0067] In this embodiment, the plug end of the insertion post 520 is chamfered, and the support frame 320 is provided with a guide plate 322 corresponding to the lock hole 321.

[0068] When the control support mechanism 300 moves between the two T-shaped side plates 110, the guide plate 322 on the support frame 320 first enters between the two T-shaped side plates 110 and contacts the insertion posts 520 of the two locking mechanisms 500 on both sides. As the support mechanism 300 continues to move between the two T-shaped side plates 110, the inclined surface on the outer side of the guide plate 322 will push the insertion post 520 to overcome the elastic force of the second spring 530 and slide into the T-shaped side plate 110. Then, the support frame 320 enters between the two T-shaped side plates 110 until the locking hole 321 on the support frame 320 corresponds to the insertion post 520. Then, the insertion post 520 is affected by the elastic force and automatically inserts into the locking hole 321, completing the locking of the support mechanism 300, thereby improving the installation efficiency of the device.

[0069] In this embodiment, an electromagnet 151 is installed on the limiting plate 150, and an iron block 511 corresponding to the electromagnet 151 is provided on the slide 510.

[0070] When the device needs to be removed from the wire, energize the electromagnet 151 to generate a magnetic force, which in turn attracts the iron block 511. The iron block 511 then drives the slide 510 to overcome the elastic force of the second spring 530 and press against the electromagnet 151. At this time, the insert 520 slides out from the lock hole 321, and the support mechanism 300 automatically rotates out from between the two T-shaped side plates 110, so that the device can be removed from the wire.

[0071] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0072] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for monitoring the tension status of anchor sections in power supply lines, characterized in that, include The monitoring body (100) has an inverted T-shaped structure, including two T-shaped side plates (110) arranged side by side. A middle plate (120) is fixed at the upper middle part of the two T-shaped side plates (110). A fixing rod (121) is fixed vertically upward on the middle plate (120). A pressure sensor (130) is provided at the upper end of the fixing rod (121). Limiting plates (150) are fixed on the outer sides of the left and right ends of the two T-shaped side plates (110). A displacement sensor (140) is installed on the middle plate (120). The pressure mechanism (200) slides and lifts at the upper end of the middle part of the monitoring body (100) and pushes the line downward. The pressure mechanism (200) includes a lifting frame (210) that slides on the fixed rod (121). The lower end of the lifting frame (210) is provided with a central shaft (220). The central shaft (220) passes through two T-shaped side plates (110). A spring (240) is provided between the lifting frame (210) and the pressure sensor (130). The support mechanism (300) is provided in two parts. The two support mechanisms (300) rotate symmetrically at both ends of the monitoring body (100) to provide symmetrical support for the clues on both sides of the central axis (220). The support mechanism (300) includes a support frame (320) with a support wheel (310) rotating inside. A rotating arm plate (330) extends from one side of the support frame (320) toward the central axis (220). The rotating arm plate (330) is rotatably connected to one of the T-shaped side plates (110) through a rotating shaft (340). Two locking holes (321) are provided on both sides of the support frame (320). There are four locking mechanisms (500). The four locking mechanisms (500) are respectively installed on the four limiting plates (150). The locking mechanisms (500) lock the support frame (320) and the T-shaped side plate (110) by inserting into the corresponding two locking holes (321).

2. The monitoring device according to claim 1, characterized in that, A grooved wheel (221) is coaxially mounted on the central shaft (220).

3. The monitoring device according to claim 1, characterized in that, The upper middle part of the lifting frame (210) is threadedly connected to a threaded sleeve (230), which slides on the fixed rod (121) and the upper end is pressed against the spring (240).

4. The monitoring device according to claim 3, characterized in that, The lifting frame (210) is equipped with a motor (250) on its side. The output shaft of the motor (250) is provided with a power gear (251). The upper end of the threaded sleeve (230) is fixed with a gear disk (231) that meshes with the power gear (251).

5. The monitoring device according to claim 1, characterized in that, The support wheel (310) is provided with grooves.

6. The monitoring device according to claim 1, characterized in that, The support frame (320) is provided with a sloping seat (323), a support plate (350) slides through the sloping seat (323), and an electric telescopic rod (351) is installed between the support plate (350) and the sloping seat (323).

7. The monitoring device according to claim 1, characterized in that, The outer end of the rotating shaft (340) is provided with a worm gear (341). The two rotating shafts (340) are mounted on the T-shaped side plate (110) on which the motor (400) is mounted. The output shaft of the motor (400) is provided with a worm (410). The worm (410) is located between the two worm gears (341) and meshes with the two worm gears (341) at the same time.

8. The monitoring device according to claim 1, characterized in that, The locking mechanism (500) includes a slide (510) that slides through the limiting plate (150). The slide (510) has two pins (520) that cooperate with the locking hole (321) near the end of the T-shaped side plate (110). The two pins (520) pass through the T-shaped side plate (110). A spring (530) is provided between the slide (510) and the limiting plate (150).

9. The monitoring device according to claim 8, characterized in that, The plug end of the plug (520) is chamfered, and the support frame (320) is provided with a guide plate (322) at the corresponding lock hole (321).

10. The monitoring device according to claim 8, characterized in that, An electromagnet (151) is installed on the limiting plate (150), and an iron block (511) corresponding to the electromagnet (151) is provided on the slide (510).

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