A device for measuring the friction of an aerial conductor strand

Abstract

The application discloses a kind of overhead conductor strand friction test measuring devices, comprising: the control module and strand friction test module being interconnected;The strand friction test module includes: apply heavy module, guide support assembly, upper sliding module 2 and lower sliding module 3;The upper sliding module 2 is set on the guide support assembly with a certain angle, the lower sliding module 3 passes through the guide support assembly and the upper sliding module 2 contact, measured conductor is respectively fixed in the upper sliding module 2 bottom and the lower sliding module 3 top, apply heavy module is set above the upper sliding module 2;The control module is used to control the lower sliding module 3 with certain speed relative motion based on different friction test requirements, collect upper sliding module on the friction test data of lower sliding module 3.By the test measuring device, the strand contact friction under different friction test requirements can be measured, and support is provided for analyzing conductor strand contact deformation.

Description

Technical Field

[0001] This invention relates to the field of material friction testing, and more specifically to a friction testing and measuring device for overhead conductor strands. Background Technology

[0002] Overhead transmission line conductors use bare stranded wire, and the typical structural form is "concentric layer stranding". That is, one or more strands are spirally twisted around a central straight core, and adjacent layers are twisted in opposite directions to restrain each other, thereby counteracting the unidirectional torsion effect caused by the same-direction winding.

[0003] During the tension laying process of overhead transmission lines, the conductors are subjected to multiple loads, including tension, bending, and torsion. The aluminum strands of the conductor repeatedly come into contact and are squeezed together during movement. The interaction of multiple strands leads to defects such as loose strands and broken strands, seriously affecting the quality and safety of the laying operation. Sometimes, wire replacement is necessary, resulting in significant economic losses. Currently, research and experiments on the contact friction between the strands of the conductor are limited, and there is no dedicated experimental equipment for studying strand contact friction, causing considerable inconvenience to related experiments and research. Summary of the Invention

[0004] In order to overcome the above-mentioned deficiencies in the prior art, the present invention provides a friction test measuring device for overhead conductor strands, comprising: a control module and a strand friction test module connected to each other; the strand friction test module comprises: a weighting module, a guide support assembly, an upper sliding module (2) and a lower sliding module (3);

[0005] The upper sliding module (2) is set at a certain angle on the guide support assembly. The lower sliding module (3) passes through the guide support assembly and contacts the upper sliding module (2). The test wire is fixed at the bottom of the upper sliding module (2) and the top of the lower sliding module (3). The weighting module is set above the upper sliding module (2).

[0006] The control module is used to control the lower sliding module (3) to move relative to each other at a certain speed based on the requirements of different friction tests, and is also used to collect friction test data of the upper sliding module (2) on the lower sliding module (3).

[0007] Preferably, the guide support assembly includes a support plate (1) and a guide assembly (15);

[0008] The upper sliding module (2) is fixed to the support plate (1) by the guide assembly (15);

[0009] The support plate (1) is provided with a sliding groove, and the lower sliding module (3) extends out of the sliding groove and contacts the upper sliding module (2).

[0010] Preferably, the guide assembly (15) includes: an L-shaped support base (16), a guide shaft (17), a linear bearing (18), and a guide plate (8);

[0011] The lower end of the L-shaped support base (16) is fixed on the support plate (1), and the upper end of the L-shaped support base (16) is equipped with guide shafts (17) on both sides along the direction of movement of the measured conductor.

[0012] Linear bearings (18) are respectively installed on the guide shafts (17) on both sides;

[0013] The linear bearing (18) is connected to the guide plate (8) to allow the guide plate (8) to slide along the guide shaft (17).

[0014] Preferably, the upper sliding module (2) includes: an angle scale (10), a pointer plate (13), an auxiliary component (11), an upper mounting plate (4) for fixing the conductor to be measured, and a main tray assembly (9) for placing the weighting module;

[0015] The pointer plate (13) and the upper mounting plate (4) are respectively disposed on the upper surface and the lower surface of the guide plate (8);

[0016] A first circular flange linear bearing is provided at the center of the guide plate (8). The angle scale (10) is embedded in the guide plate (8) with the first circular flange linear bearing as the center. The shaft hole provided at the center of the pointer plate (13) is sleeved on the first circular flange linear bearing. The edge of the pointer plate coincides with the scale line of the scale.

[0017] The guide post of the main tray assembly (9) passes through the first round flange linear bearing and is fixedly connected to the center of the upper mounting plate (4);

[0018] After the auxiliary component (11) is fixed to both sides of the pointer plate (13), it passes through the arc grooves on both sides of the guide plate (8) and is fixedly connected to the upper mounting plate (4). It is used to drive the upper mounting plate to rotate around the guide post of the main tray assembly (9) to the target scale through the pointer plate.

[0019] Preferably, the auxiliary component (11) is an auxiliary tray, and the strand friction test module further includes: a second circular flange linear bearing, holes are set on both sides of the pointer plate (13) at positions corresponding to the arc groove on the guide plate (8), and the second flange linear bearing is set in the holes. The guide column of the auxiliary tray passes through the second circular flange linear bearing and the arc groove in sequence and is fixedly connected to the upper mounting plate (4).

[0020] Preferably, the strand friction test module further includes: a locking device;

[0021] The locking device is disposed between the pointer plate (13) and the guide assembly (15) and is used to fix the pointer plate (13) and the guide assembly (15) after the pointer plate (13) is rotated to the target scale.

[0022] Furthermore, the locking device includes: a locking screw and a threaded hole on the guide plate (8) that is adapted to the locking screw;

[0023] When the pointer plate (13) is rotated to the target scale, the locking screw passes through the pointer plate (13) and connects to the threaded hole on the guide plate (8).

[0024] Preferably, the sliding module includes:

[0025] The lower mounting plate (5), slide (26) and ball screw mechanism (25) are fixed to the test lead. The slide (26) is set on the ball bearing seat of the ball screw mechanism (25) and moves with the ball bearing.

[0026] A connecting support (27) is installed on the upper part of the slide (26), and a lower mounting plate (5) is connected to the upper part of the connecting support (27) by bolts;

[0027] The ball screw mechanism (25) is connected to a motor, and the motor is connected to a control module for controlling the motion state of the ball screw mechanism (25) through the control module.

[0028] Preferably, the strand friction test module further includes:

[0029] Tension sensor (7), connector (19), and connecting rod (12);

[0030] The connecting seat (19) is disposed at one end along the traveling direction of the upper sliding module;

[0031] The connecting seat (19) and the tension sensor (7) are connected by the connecting rod (12).

[0032] Preferably, the tension sensor (7) is a resistance strain gauge sensor.

[0033] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0034] The technical solution provided by this invention includes an interconnected control module and a strand friction test module. The strand friction test module comprises a weighting module, a guide support assembly, an upper sliding module 2, and a lower sliding module 3. The upper sliding module 2 is positioned at a certain angle on the guide support assembly. The lower sliding module 3 passes through the guide support assembly and contacts the upper sliding module 2. The conductor under test is fixed to the bottom of the upper sliding module 2 and the top of the lower sliding module 3, respectively. The weighting module is positioned above the upper sliding module 2. The control module controls the lower sliding module 3 to move relative to the conductor at a certain speed based on different friction test requirements and also collects friction test data of the upper sliding module 2 on the lower sliding module 3. This test and measurement device can measure the strand contact friction force under different friction test requirements, thereby obtaining the strand contact friction coefficient, providing support for analyzing conductor strand contact deformation. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the measuring device for the overhead conductor strand friction test in an embodiment of the present invention;

[0036] Figure 2 This is a schematic diagram of the upper sliding module in an embodiment of the present invention;

[0037] Figure 3 This is a schematic diagram of the structure of the guide component in an embodiment of the present invention;

[0038] Figure 4 This is a schematic diagram of the connection structure between the guide plate and the pointer plate in an embodiment of the present invention;

[0039] Figure 5 This is a schematic diagram of the structure of the weight tray in an embodiment of the present invention;

[0040] Figure 6 This is a partially enlarged schematic diagram of the connection between the pointer plate and the angle scale in an embodiment of the present invention;

[0041] Figure 7 This is a schematic diagram of the lower sliding module in an embodiment of the present invention;

[0042] Figure 8 This is a detailed structural diagram of the sliding module in an embodiment of the present invention;

[0043] Figure 9 This is a schematic diagram of the strand installation in an embodiment of the present invention;

[0044] Figure 10 This is a schematic diagram illustrating an application scenario of one embodiment of the present invention;

[0045] Figure 11 This is a detailed schematic diagram illustrating an application scenario of one embodiment of the present invention;

[0046] 1-Support plate; 2-Upper sliding module; 3-Lower sliding module; 4-Upper mounting plate; 5-Lower mounting plate; 6-Weight block; 7-Force sensor; 8-Guide plate; 9-Main tray assembly; 10-Angle scale; 11-Auxiliary assembly; 12-Connecting rod; 13-Pointer plate; 14-Locking device; 15-Guide assembly; 16-L-shaped support seat; 17-Guide shaft; 18-Linear bearing; 19-Connecting seat; 20-First circular flange linear bearing; 21-Circular arc groove; 22-T-type support; 23-Pattern; 24-Guide column; 25-Ball screw mechanism; 26-Slide table; 27-Connecting support; 28-Strand wire; 29-System control module; 30-Protective cover; 31-Frame; 32-Touch display screen; 33-Control cabinet; 34-System indicator light; 35-System switch button; 36-Emergency stop button. Detailed Implementation

[0047] To better understand this invention, the following description, in conjunction with the accompanying drawings and examples, will further illustrate the invention.

[0048] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, 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.

[0049] To conduct contact friction tests between strands in a conductor, this embodiment provides a measuring device for overhead conductor strand friction tests. The device can measure the strand contact friction force under different working conditions such as the number of strand contact pairs, strand contact force, crossing angle, and relative motion speed, determine the friction coefficient between strands, and provide support for conductor strand contact deformation.

[0050] In embodiments of the present invention, such as Figure 1 As shown, the overhead conductor strand friction test measuring device of this invention includes:

[0051] The control module and the strand friction test module are interconnected; the strand friction test module includes: a weight application module, a guide support assembly, an upper sliding module 2 and a lower sliding module 3;

[0052] The upper sliding module 2 is set at a certain angle on the guide support assembly. The lower sliding module 3 passes through the guide support assembly and contacts the upper sliding module 2. The test wire is fixed at the bottom of the upper sliding module 2 and the top of the lower sliding module 3 respectively. The weighting module is set above the upper sliding module 2.

[0053] The control module is used to control the lower sliding module 3 to move relative to the lower sliding module 3 at a certain speed based on the requirements of different friction tests, and is also used to collect friction test data of the upper sliding module 2 on the lower sliding module 3.

[0054] In this embodiment, the guide support assembly includes a support plate 1 and a guide assembly 15;

[0055] The upper sliding module 2 is fixed to the support plate 1 by the guide component 15;

[0056] The support plate 1 is provided with a sliding groove, and the lower sliding module 3 extends out of the sliding groove and contacts the upper sliding module 2.

[0057] In this embodiment, the guide assembly 15 includes: an L-shaped support base 16, a guide shaft 17, a linear bearing 18, and a guide plate 8;

[0058] The lower end of the L-shaped support base 16 is fixed on the support plate 1, and the upper end of the L-shaped support base 16 is equipped with guide shafts 17 on both sides along the movement direction of the measured conductor.

[0059] Linear bearings 18 are respectively installed on the guide shafts 17 on both sides;

[0060] The linear bearing 18 is connected to the guide plate 8 to allow the guide plate 8 to slide along the guide shaft 17.

[0061] In one specific implementation, such as Figure 3 As shown, the guide assembly 15 includes a guide plate 8, a support base 16, a guide shaft 17, linear bearings 18, etc. The support base 16 is L-shaped and is arranged in pairs along the direction of movement of the sliding module 3. The lower end is fixed to both sides of the support plate 1 by bolts, and the upper end is equipped with a T-shaped support 22 to install the guide shaft 17. Two linear bearings 18 are installed on each of the two guides 17. The linear bearings 18 are equipped with bearing seats on the outside and are connected to the guide plate 8 by bolts, thereby realizing the free sliding of the guide plate 8 along the guide shaft 17.

[0062] In this embodiment, the upper sliding module 2 includes: an angle scale 10, a pointer plate 13, an auxiliary component 11, an upper mounting plate 4 for fixing the conductor to be measured, and a main tray assembly (9) for placing the weighting module 6.

[0063] The pointer plate 13 and the upper mounting plate 4 are respectively disposed on the upper surface and the lower surface of the guide plate 8;

[0064] A first circular flange linear bearing is provided at the center of the guide plate 8. The angle scale 10 is embedded in the guide plate 8 with the first circular flange linear bearing as the center. The shaft hole provided at the center of the pointer 13 is sleeved on the first circular flange linear bearing. The edge of the pointer plate coincides with the scale line of the scale.

[0065] The guide post of the main tray assembly 9 passes through the first circular flange linear bearing and is fixedly connected to the center of the upper mounting plate 4;

[0066] After the auxiliary component 11 is fixed to both sides of the pointer plate 13, it passes through the arc grooves provided on both sides of the guide plate 8 and is fixedly connected to the upper mounting plate 4. It is used to drive the upper mounting plate to rotate around the guide post of the main tray assembly 9 to the target scale through the pointer plate.

[0067] In one specific implementation, combined with Figure 2 and Figure 3 As shown, the guide plate 8 has a hole in the middle for installing the first circular flange linear bearing 20. The guide plate 8 around the first circular flange linear bearing 20 has a groove that matches the angle scale 10, so that the angle scale 10 is embedded in the guide plate 8 and fixedly connected, and cannot rotate with the rotation of the pointer plate 13. At the same time, after the angle scale 10 is embedded in the guide plate 8, it is ensured to be parallel to the horizontal plane of the guide plate 8. In order to reduce the resistance when the pointer plate 13 rotates around the first circular flange linear bearing 20 and improve the test accuracy.

[0068] like Figure 4 As shown, the pointer plate 13 has a shaft hole in the middle, which is used for mounting. Figure 3 The pointer plate 13 rotates on the linear bearing 20 of the first circular flange in the middle of the guide plate 8; the main tray assembly 9 consists of a tray 23 and a guide post 24, as shown. Figure 5 As shown, one end of the guide post 24 is connected to the tray 23 via a thread, and the other end passes through... Figure 3 The first circular flange linear bearing shown is connected to the upper mounting plate 4 by threads. During the test, a weight-applying module is placed on the tray 23, and the weight of the module can be transferred to the upper mounting plate 4 through the guide column 24 to achieve the application of the strand contact force.

[0069] In this embodiment, the weighting module can be made of weight block 6 or any object that requires measurement weight. The weight block 6 can be configured with weight and number of weights according to the strand contact force range set in the test conditions. During the test measurement, the required number of weight blocks are placed on the main tray assembly of the upper sliding module 2 according to the strand contact force corresponding to the test conditions, thereby realizing the loading of strand contact force.

[0070] like Figure 3As shown, arc-shaped grooves 21 are provided at both ends of the guide plate 8. After the auxiliary component 11 is fixed to both sides of the pointer plate 13, it passes through the arc-shaped grooves on both sides of the guide plate 8 and is fixedly connected to both sides of the upper mounting plate 4. The arc and arc length of the arc-shaped groove 21 are related to the intersection angle of the strands. The auxiliary component 11 fixes the pointer plate 13 and the upper mounting plate 4 together, so that the upper mounting plate 4 and the pointer plate 13 rotate synchronously to the target scale. When the pointer plate 13 rotates, the auxiliary component slides along the arc-shaped groove 21. The auxiliary component 11 can be a fixing component between the pointer plate and the upper mounting plate, or it can be an auxiliary tray.

[0071] In one specific embodiment, the auxiliary component 11 is an auxiliary tray, and the tray of the auxiliary tray is at the same horizontal height as the tray of the main tray assembly. It is used to transfer the weight of the weight-applying module to the mounting plate together with the main tray assembly, ensuring that the measured strand receives the same contact force. As a more preferred embodiment, when the auxiliary component 11 is an auxiliary tray, a circular hole is made at the position corresponding to the arcuate groove 21 in the pointer plate and guide plate, respectively, to install a second circular flange linear bearing. Figure 4 As shown, the guide post of the auxiliary tray passes through the linear bearing of the second round flange and connects to the threaded hole of the upper mounting plate 4.

[0072] In this embodiment, a locking device 14 is provided between the pointer plate 13 and the guide plate 8. When adjusting the angle, the locking device 14 is released, such as... Figure 6 The pointer plate 13 is rotated so that the indicator edge coincides with the target scale of the angle dial 10, and then the locking device 14 is locked to prevent the pointer plate from rotating during the test, which would cause inaccurate angles.

[0073] In one embodiment, the locking device 14 may employ, for example... Figure 2 and 4The locking screw shown has arc grooves at both ends of the pointer plate. The locking bolt connects to the threaded hole of the guide plate 8 through the arc groove on the pointer plate. When the pointer plate 13 is rotated, the locking screw is loosened. The pointer plate is rotated so that the indicating edge of the pointer plate coincides with the target scale of the angle dial 10, and then the locking screw is tightened. In addition, the locking device 14 can also have an intermediate connector and a snap fastener. The intermediate connector is fixed to one or both ends of the pointer plate 13 or the guide plate 8, and the snap fastener is fixed to the same end or both ends of the guide plate 8 or the pointer plate 13. When the pointer plate 13 is rotated to the target scale, the snap fastener engages with the intermediate connector. For example, the fasteners can use snaps or pins, with snap holes or pin holes used for intermediate connections. The snaps or pins, along with their corresponding holes or pin holes, are fitted onto one or both ends of the pointer plate and guide plate. When the pointer plate and guide plate need to be fixed, the snap is inserted into the snap hole or the pin is inserted into the pin hole to achieve a fixing effect. When the pointer plate needs to be rotated to adjust the angle, the snap is pulled out of the snap hole or the pin is pulled out of the pin hole to rotate the pointer plate. The locking device 14 can also use limiting devices on both sides of the pointer plate. When the pointer plate and guide plate need to be fixed, the limiting devices are activated; otherwise, they are disengaged.

[0074] In this embodiment, the angle adjustment function of the upper mounting plate is completed by the pointer plate, realizing the setting of the cross angle of the upper and lower mounting plates; the weight tray and auxiliary tray pass through the guide plate and are directly connected to the upper mounting plate, so that the weight of the weight block acts directly on the upper mounting plate, while the guide component only guides the upper mounting plate and does not bear the force of the weight, effectively reducing the error of the test measurement system.

[0075] In this embodiment, as Figure 7 and Figure 8 As shown, the lower sliding module 3 mainly includes a lower mounting plate 5, a ball screw mechanism 25, a slide table 26, and a connecting support 27.

[0076] The ball screw mechanism 25 is connected to the drive motor, and the motor is connected to the controller. The movement of the ball screw mechanism can be controlled by the controller.

[0077] The slide table 26 is mounted on the ball bearing seat of the ball screw mechanism 25 and moves with the ball bearing. A connecting support 27 is mounted on the upper part of the slide table 26, and a lower mounting plate 5 is bolted to the top of the connecting support. The lower mounting plate 5 can move with the ball screw mechanism.

[0078] In this embodiment, the sliding module uses a ball screw system to drive the translation of the lower mounting plate, which can accurately control the moving speed and displacement of the lower mounting plate, and has the advantages of high precision and fast response.

[0079] like Figure 9 As shown, during the test measurement, the test strand 28 is fixed to the lower mounting plate 5 and the upper mounting plate 4 with glue (or with pressure plates at both ends).

[0080] When the sliding module 3 moves, the upper mounting plate 4 and the lower mounting plate 5 move relative to each other, generating friction on the upper mounting plate 4. This causes the guide plate 8 of the upper mounting plate 4 to move along the guide shaft 17, thereby measuring the friction between the strands being tested through the tension sensor 7.

[0081] like Figure 3 As shown, a connecting seat 19 is installed on one side along the travel direction of the guide plate 8, which can be connected via... Figure 2 The connecting rod 12 shown connects the tension sensor 7 to the guide plate 8 to meet the force measurement requirements of the test system.

[0082] In this embodiment, the tensile sensor can be selected according to the required measurement range, sampling frequency, accuracy, and other specifications, and can withstand tensile and compressive forces. Furthermore, the data interface of the tensile sensor can be connected to the touchscreen display of the system control module to achieve real-time transmission and recording of test data, ensuring the safety and reliability of the test measurement data.

[0083] In one specific implementation, the tension sensor 7 is a resistance strain gauge sensor.

[0084] Based on the above solution, the present invention provides an application scenario of an embodiment of the technical solution of the present invention, such as... Figure 10 As shown, the support plate 1 of the strand friction test module in the above scheme is installed on the frame 31 through the bolt holes at the four corners and protected by the protective cover 30. The controller is encapsulated in the system control module 29, and a touch screen 32 is provided to the user.

[0085] The frame is also responsible for installing and fixing various components such as the control module and protective cover; the strand friction test module mainly realizes functions such as installing the strand to be measured, adjusting the strand crossing angle, and loading weights; the system control module is mainly responsible for controlling the moving speed and direction of the strand mounting plate, reading and recording test data, and displaying test results in real time.

[0086] like Figure 11 As shown, the control module mainly includes a touch screen 32, a control cabinet 33, a system power indicator 34, a system switch button 35, an emergency stop button 36, etc.

[0087] 1) The touch screen 32 has built-in system control software. The system control software uses the touch screen to connect to the system controller to control the motion of the strand friction test module. It can realize the establishment of test items (including test number, test date, test personnel, etc.), setting of test parameters (such as displacement and moving speed of the strand mounting plate), display and save of test results (force-time or force-displacement data), and can also connect to an external mouse and keyboard for input and output control. It has the advantages of comprehensive functions and convenient use.

[0088] 2) The control cabinet 33 contains a system controller that can control the walking mechanism of the wire friction test module, namely the moving speed and direction of the sliding module, and complete the program instructions set by the system control software.

[0089] 3) The system power indicator 34 and the system switch button 35 are functionally linked. When the system power is turned on and the system switch button 35 is pressed, the system power indicator 34 will light up. At this time, the touch screen 32 can drive the control system to work normally. The emergency stop button 36 can be pressed in case of an emergency, and the system will stop immediately.

[0090] (2) Wire Friction Test Module

[0091] like Figure 1 As shown, the wire friction test module mainly includes a weight block, an upper sliding module, a lower sliding module, and a tension sensor.

[0092] 1) The weight and number of weight blocks can be configured according to the strand contact force range set in the test conditions. During the test measurement, the required number of weight blocks are placed on the weight tray of the upper sliding module according to the strand contact force corresponding to the test conditions, thereby realizing the loading of the strand contact force.

[0093] 2) The tension sensor is a resistance strain gauge sensor, capable of withstanding tensile and compressive forces. It is mounted on the support plate of the upper sliding module and connected to the upper sliding module via a connecting rod. The specifications and model can be selected according to the test measurement requirements (such as range, measurement accuracy, sampling frequency, etc.). Additionally, the data interface of the tension sensor can be connected to the touchscreen display of the system control module to achieve data reading and recording.

[0094] 3) The upper sliding module mainly includes a weight tray, angle adjustment assembly, auxiliary tray, connecting rod, upper mounting plate, etc. The guide support assembly includes a support plate and guide components, such as... Figure 2 As shown.

[0095] The support plate is used to mount the guide assembly and is installed via bolt holes at the four corners. Figure 10 On the rack shown.

[0096] like Figure 3 As shown, the guide assembly includes support seats, guide plates, guide shafts, linear bearings, and connecting seats. The support seats are arranged in pairs, with their lower ends fixed to the [unclear - possibly a specific component or component]. Figure 2 The support plate shown has guide shafts mounted on its upper ends using T-shaped supports on both sides. Two linear bearings are mounted on each guide shaft, with bearing housings installed on the outside of the linear bearings. These bearings are connected to the guide plate via bolts, allowing the guide plate to slide freely along the guide shafts. A round flange linear bearing is installed in the middle of the guide plate, and a connecting seat is installed on one side along the direction of travel, allowing for... Figure 2The connecting rod shown connects the tension sensor to the guide plate, thus fulfilling the force measurement requirements of the test system.

[0097] The weight tray consists of a tray and guide columns, such as Figure 5 As shown, one end of the guide post is threadedly connected to the tray, and the other end passes through... Figure 3 The first circular flange linear bearing shown is connected to the upper mounting plate via threads. During testing, weights are placed on the tray, and the weight is transferred to the upper mounting plate via guide posts, thus applying contact force to the strands. The upper mounting plate secures the strands using adhesive or end-mounting pressure plates, etc. Figure 9 As shown.

[0098] like Figure 4 As shown, the angle adjustment assembly mainly consists of an angle dial, a pointer plate, and locking screws. The angle dial is installed... Figure 3 The guide plate shown has a circular groove in the middle. The pointer plate has a shaft hole in the middle for mounting. Figure 3 The guide plate rotates on the linear bearing of the first circular flange in the middle; the pointer plate has arc-shaped grooves at both ends, and the locking screws pass through the arc-shaped grooves and... Figure 3 The guide plate is connected to a threaded hole; during the test measurement, loosen the locking screw, as shown. Figure 6 Rotate the pointer plate until the indicator edge aligns with the target mark on the angle dial, then tighten the locking screw to complete the angle adjustment.

[0099] Additionally, a round hole is opened at each end of the pointer plate to install a second circular flange linear bearing, such as... Figure 4 The auxiliary tray shown passes through the linear bearing, and its other end connects to the threaded hole in the upper mounting plate.

[0100] 4) The lower sliding module mainly includes a ball screw mechanism, a slide table, a connecting support, and a lower mounting plate, such as... Figure 7 As shown.

[0101] The ball screw mechanism is installed in Figure 11 Inside the frame shown, the drive motor on the right is connected to the controller of the system control module, and the movement of the ball screw mechanism can be controlled through the controller.

[0102] The slide is mounted on the ball bearing housing of the ball screw mechanism and moves with the ball bearing. A connecting support is installed on the upper part of the slide, and a lower mounting plate is bolted to the top of the connecting support. During testing and measurement, the test strand is fixed to the lower mounting plate with glue (or with pressure plates at both ends) and moves with the ball screw mechanism.

[0103] In one embodiment, when conducting a test using the overhead conductor strand friction test and measurement device provided in this embodiment, the specific implementation plan is as follows:

[0104] (1) Prepare a strand sample of the test conductor according to the specifications and model of the test conductor. The length of the sample is determined according to the measurement stroke and the length of the upper and lower mounting plates.

[0105] (2) Turn on the strand friction test module and use the touch screen control software to move the lower mounting plate to the initial position;

[0106] Remove the upper and lower mounting plates from the strand friction test module, and install and fix the required number of strands side by side onto the corresponding mounting plates according to the test conditions.

[0107] (3) After the strands are installed, first put the lower mounting plate back in its original position. According to the strand crossing angle under the test conditions, adjust the angle adjustment pointer plate of the upper sliding module. After adjusting to the required angle, tighten the locking screws. Then put the upper mounting plate back into the strand friction test module.

[0108] (4) Based on the contact force of the strand under the test conditions, configure the weight block and place it on the weight tray;

[0109] (5) Create a test project in the touch screen control software (enter the number, date, personnel and other information), set the moving speed, direction and displacement of the lower mounting plate, clear the tension sensor to zero, and then start the test. The test will stop automatically after reaching the set displacement, and the tension sensor data of the test record will be saved.

[0110] At this point, the test measurement is complete. By setting different numbers of strand contact pairs, strand contact angles, contact forces, and mounting plate moving speeds, the friction force of the strands under different test conditions can be measured. By processing the saved test data, the friction coefficient between the strands can be obtained.

[0111] The experimental measuring device provided in this embodiment can adjust the number of strands on the upper and lower mounting plates (i.e., the number of strand contact pairs, such as 1-to-1, 1-to-many, many-to-many, etc.), adjust the crossing angle and contact force between the strands, and study the influence of different numbers of strand contact pairs, crossing angles, and contact forces on strand contact friction. The sample is easy to install, the system is easy to operate with touch screen, the interface is intuitive and user-friendly, and the test data is automatically collected, providing a scientific and effective device for the measurement and research of strand contact friction parameters.

[0112] Based on the above solution, the present invention also provides an application scenario of an embodiment of the technical solution of the present invention. Taking a certain type of steel-cored aluminum stranded wire as an example, the friction coefficient between the steel strand and the aluminum strand is measured using the strand friction test measuring device provided by the present invention.

[0113] Before the test, prepare steel and aluminum strand samples of the steel-cored aluminum stranded wire to be tested, cut them to an appropriate length, pre-straighten them to meet the requirements of test measurement and installation.

[0114] During the test measurement, first reset the mounting plate of the strand friction test module; remove the upper and lower mounting plates from the strand friction test module, and use glue or pressure plate to fix the strand sample to be tested to the upper and lower mounting plates respectively; adjust the angle adjustment pointer plate of the upper sliding module, turn it to the required angle, and tighten the locking screw. At this time, the cross angle is set.

[0115] Then, the upper and lower mounting plates are reinstalled back into the strand friction test module, and weight blocks are placed on the weight tray to complete the application of strand contact force;

[0116] Finally, create a test project on the touch screen of the wire friction test module, set the moving speed and displacement of the mounting plate, zero the tension sensor, and click start to begin the test measurement. At the same time, the test measurement data will be automatically recorded.

[0117] After the test, test data such as force-time or force-displacement, as well as relevant test curves, can be exported as needed.

[0118] This embodiment demonstrates that, through the coordinated operation of various modules in the strand friction test and measurement device, it is possible to test and measure the strand contact friction force under the influence of factors such as the number of strand contact pairs, contact force, cross angle, and relative moving speed. This has significant practical value for analyzing and studying the strand contact friction law.

[0119] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0120] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0121] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0122] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0123] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A friction test and measurement device for overhead conductor strands, characterized in that, include: Interconnected control module and strand friction test module; The strand friction test module includes: a weighting module, a guide support assembly, an upper sliding module (2), and a lower sliding module (3). The upper sliding module (2) is set at a certain angle on the guide support assembly. The lower sliding module (3) passes through the guide support assembly and contacts the upper sliding module (2). The test wire is fixed at the bottom of the upper sliding module (2) and the top of the lower sliding module (3). The weighting module is set above the upper sliding module (2). The control module is used to control the lower sliding module (3) to move relative to each other at a certain speed based on the requirements of different friction tests, and is also used to collect friction test data of the upper sliding module (2) on the lower sliding module (3); The guide support assembly includes a support plate (1) and a guide assembly (15); The upper sliding module (2) is fixed to the support plate (1) by the guide assembly (15); The support plate (1) is provided with a sliding groove, and the lower sliding module (3) extends out of the sliding groove and contacts the upper sliding module (2); The guide assembly (15) includes: an L-shaped support base (16), a guide shaft (17), a linear bearing (18), and a guide plate (8); The lower end of the L-shaped support base (16) is fixed on the support plate (1), and the upper end of the L-shaped support base (16) is equipped with guide shafts (17) on both sides along the direction of movement of the measured conductor. Linear bearings (18) are respectively installed on the guide shafts (17) on both sides; The linear bearing (18) is connected to the guide plate (8) for sliding the guide plate (8) along the guide shaft (17); The upper sliding module (2) includes: an angle scale (10), a pointer plate (13), an auxiliary component (11), an upper mounting plate (4) for fixing the conductor to be measured, and a main tray assembly (9) for placing the weighting module. The pointer plate (13) and the upper mounting plate (4) are respectively disposed on the upper surface and the lower surface of the guide plate (8); A first circular flange linear bearing is provided at the center of the guide plate (8). The angle scale (10) is embedded in the guide plate (8) with the first circular flange linear bearing as the center. The shaft hole provided at the center of the pointer plate (13) is sleeved on the first circular flange linear bearing. The edge of the pointer plate coincides with the scale line of the scale. The guide post of the main tray assembly (9) passes through the first round flange linear bearing and is fixedly connected to the center of the upper mounting plate (4); After the auxiliary component (11) is fixed to both sides of the pointer plate (13), it passes through the arc grooves set on both sides of the guide plate (8) and is fixedly connected to the upper mounting plate (4). It is used to drive the upper mounting plate to rotate around the guide post of the main tray assembly (9) to the target scale through the pointer plate.

2. The apparatus as claimed in claim 1, characterized in that, The auxiliary component (11) adopts an auxiliary tray. The strand friction test module also includes: a second circular flange linear bearing. Holes are set on both sides of the pointer plate (13) at positions corresponding to the arc groove on the guide plate (8), and the second circular flange linear bearing is set in the holes. The guide column of the auxiliary tray passes through the second circular flange linear bearing and the arc groove in sequence and is fixedly connected to the upper mounting plate (4).

3. The apparatus as described in claim 1, characterized in that, The strand friction test module also includes: a locking device; The locking device is disposed between the pointer plate (13) and the guide assembly (15) and is used to fix the pointer plate (13) and the guide assembly (15) after the pointer plate (13) is rotated to the target scale.

4. The apparatus as described in claim 3, characterized in that, The locking device includes: a locking screw and a threaded hole on the guide plate (8) that is adapted to the locking screw; When the pointer plate (13) is rotated to the target scale, the locking screw passes through the pointer plate (13) and connects to the threaded hole on the guide plate (8).

5. The apparatus as claimed in claim 1, characterized in that, The sliding module includes: The lower mounting plate (5), slide (26) and ball screw mechanism (25) of the test lead are fixed. The slide (26) is set on the ball bearing seat of the ball screw mechanism (25) and moves with the ball bearing. A connecting support (27) is installed on the upper part of the slide (26), and a lower mounting plate (5) is connected to the upper part of the connecting support (27) by bolts. The ball screw mechanism (25) is connected to a motor, and the motor is connected to a control module for controlling the motion state of the ball screw mechanism (25) through the control module.

6. The apparatus as claimed in claim 1, characterized in that, The strand friction test module also includes: Tension sensor (7), connector (19) and connecting rod (12); The connecting seat (19) is disposed at one end along the traveling direction of the upper sliding module; The connecting seat (19) and the tension sensor (7) are connected by the connecting rod (12).

7. The apparatus as claimed in claim 6, characterized in that, The tensile sensor (7) is a resistance strain gauge sensor.

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