Stretching linkage equipment and tensioner

Abstract

The stretching linkage equipment comprises a traction machine and the tension machine, the traction machine comprises a traction machine frame, a traction winding drum and a guide mechanism, the traction winding drum is installed on the traction machine frame, and the guide mechanism is arranged on the traction machine frame; the tension machine comprises a tension machine frame, an output shaft and a tension winding drum, the tension winding drum is rotationally arranged on the tension machine frame, and the output shaft is fixedly connected to the tension winding drum; a hydraulic resistance braking mechanism is fixedly arranged on the tension rack, and the hydraulic resistance braking mechanism is arranged on the output shaft in a sleeving manner; the tension machine further comprises a gear motor, and the gear motor is arranged on the tension machine frame. The hydraulic resistance braking mechanism comprises a liquid disc, a closed liquid cavity filled with magnetorheological fluid is arranged in the liquid disc, a resistance wheel set is arranged in the liquid cavity, and the resistance wheel set comprises a rotatable resistance blade and a motor; and a magnetic field regulation and control mechanism is arranged outside the liquid disc. The technical problem that hydraulic braking of existing stretching equipment fails is solved by integrating the hydraulic resistance braking mechanism and the magnetic domain regulation and control mechanism through the tensioner.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric power engineering, more particularly to a tension linkage device and a tension machine. BACKGROUND

[0002] In the fields of electric power engineering, bridge construction and heavy material transportation, the tension linkage device as the core equipment for realizing cable tensioning and component displacement directly determines the engineering quality and operation safety in terms of stability and precision. The current mainstream tension linkage device is mainly composed of a tension machine, a traction machine and a control console, and realizes linkage function through mechanical transmission and simple electrical signal interaction. However, there are still significant technical shortcomings in intelligent collaborative control and key component performance, which are difficult to meet the engineering requirements of high precision and high reliability.

[0003] Among them, as the core executive component of the tension linkage device, the tension machine has insufficient precision and reliability in braking performance, which has become a core bottleneck restricting the overall performance of the device. The existing tension machine braking system mainly adopts mechanical brake or single hydraulic braking structure. The mechanical brake is prone to uneven wear of brake shoes during long-term use, resulting in fluctuation of braking force output. Especially under high load working conditions, the brake may slip, and the cable tension cannot be accurately maintained. Although the hydraulic brake can adjust the braking force through oil pressure, the braking response speed is easily deviated due to the influence of factors such as oil temperature change and hydraulic oil leakage, and lacks real-time pressure feedback and fault self-diagnosis function. When the braking system has hidden troubles such as aging of sealing elements and oil line blockage, it cannot be warned in advance, and sudden brake failure may occur during operation, causing serious safety accidents. SUMMARY

[0004] The purpose of the present application is to provide a tension linkage device and a tension machine to solve the technical problem of hydraulic brake failure of the existing tension device.

[0005] To solve the above technical problems, the present application provides the following technical scheme: a tension linkage device, comprising a traction machine and a tension machine, the traction machine comprising a traction machine frame, a traction drum and a guide mechanism, the traction drum being installed on the traction machine frame, and the guide mechanism being arranged on the traction machine frame;

[0006] The tension machine comprises a tension machine frame, an output shaft and a tension drum, the tension drum being rotatably arranged on the tension machine frame, and the output shaft being fixedly connected to the tension drum;

[0007] A liquid resistance braking mechanism is fixedly arranged on the tension machine frame, and the liquid resistance braking mechanism is sleeved on the output shaft;

[0008] The tension machine further comprises a reduction motor, the reduction motor being arranged on the tension machine frame, and one end of the output shaft away from the tension drum being fixedly connected to the output end of the reduction motor.

[0009] The fluid resistance braking mechanism comprises a liquid disc, a closed liquid cavity filled with magnetorheological fluid in the liquid disc, a resistance wheel set in the liquid cavity, a resistance vane rotatable in the resistance wheel set, and a motor for driving the resistance vane of the resistance wheel set to rotate through a switching assembly; and the liquid disc is externally provided with a magnetic domain regulation mechanism for regulating the viscosity of the magnetorheological fluid.

[0010] Preferably, the middle fixed sleeve of the resistance wheel set is arranged on the output shaft, and the switching assembly is arranged on the outer wall of the resistance wheel set.

[0011] Preferably, the resistance wheel set comprises a rotating cylinder, a rotating rod, a resistance vane, a rotating ring, and a wheel frame, the rotating cylinder is rotatably arranged in the liquid disc, the rotating cylinder is fixedly sleeved on the output shaft, the resistance vane is annularly and equidistantly rotatably connected to the outer wall of the rotating cylinder, the rotating rod is fixedly connected to one end of the resistance vane away from the rotating cylinder, the rotating ring is annularly and equidistantly provided with through holes, the rotating ring is movably sleeved on the rotating rods through the through holes, the wheel frame is annularly and equidistantly fixedly arranged on the outer wall of the rotating ring, and the switching assembly is arranged on the wheel frame.

[0012] Preferably, the switching assembly comprises a friction wheel, a motor, a synchronous ring frame, a limiting rod, and a deflection block, the friction wheel is rotatably arranged on the wheel frame, the motor is fixedly arranged on the wheel frame and has an output end fixedly connected to the friction wheel, the synchronous ring frame is movably sleeved on the friction wheels, the limiting rod is annularly and equidistantly fixedly arranged on the outer wall of the synchronous ring frame, one end of the deflection block is fixedly connected to the rotating rod, and the other end of the deflection block is movably sleeved on the limiting rod.

[0013] Preferably, one end of the deflection block is provided with a fixed hole, the other end of the deflection block is provided with a sliding hole, one end of the deflection block is fixedly sleeved on the rotating rod through the fixed hole, and the other end of the deflection block is slidably sleeved on the limiting rod through the sliding hole.

[0014] Preferably, the magnetic domain regulation mechanism comprises a fixed ring set, a set of telescopic slide rod assemblies, and a regulation unit for driving the telescopic slide rod assemblies to extend and retract; the slide rod assembly comprises a sliding block and a plurality of connecting rods arranged in the fixed ring set and radially arranged along the fixed ring set, the first ends of two adjacent connecting rods are hingedly connected to the sliding block at the ring sliding groove on the periphery of the fixed ring set, the tail end hinging points of the two adjacent connecting rods are located on a circle concentric with the ring sliding groove, and a plurality of sliding blocks are slidably arranged on the ring sliding groove on the periphery of the fixed ring set; the connecting rod is internally embedded with an excitation coil, and the sliding block is internally encapsulated with a magnetic core; the leads of the excitation coil are collected through a micro wire slot arranged in the interior of the sliding block and are electrically connected with an external controllable power supply through a current collection ring arranged on the fixed ring frame.

[0015] Preferably, the fixed ring set comprises a fixed ring frame, a ring sliding groove, a support rod and a center ring, the fixed ring frame is fixedly arranged at the top end of the support frame, the ring sliding groove is an annular groove arranged on the fixed ring frame and the two ends of the ring sliding groove are not communicated with each other, the support rod is arranged on the inner wall of the fixed ring frame in a ring shape and at equal intervals, the center ring is fixedly connected to the end of the support rod away from the fixed ring frame, and the center ring is movably sleeved on the output shaft; the first end of the connecting rod of the slide rod assembly is rotatably connected to the fixed ring frame; the support frame is arranged in the tension frame, and the fixed ring set is fixedly arranged at the top end of the support frame.

[0016] Preferably, the control unit comprises a servo motor, a gear, a sleeve ring, a tooth column and a control rod, the servo motor is fixedly connected to the tension frame, the gear is fixedly sleeved on the output end of the servo motor, the sleeve ring is rotatably arranged on the center ring, the tooth column is arranged on the end of the sleeve ring away from the center ring in a ring shape and at equal intervals, the gear is meshingly connected with the tooth columns, one end of the control rod is fixedly connected to the outer wall of the sleeve ring, and the other end of the control rod is rotatably connected to a group of the sliding blocks close to the end of the ring sliding groove.

[0017] Preferably, the tensioning mechanism is arranged on the tension drum, and the magnetic field control mechanism arranged in the tension frame is located at the end of the liquid resistance braking mechanism away from the tension drum.

[0018] A tension machine comprises a tension frame, an output shaft and a tension drum, the tension drum is rotatably arranged on the tension frame, and the output shaft is fixedly connected to the tension drum.

[0019] A liquid resistance braking mechanism is fixedly arranged on the tension frame, and the liquid resistance braking mechanism is sleeved on the output shaft.

[0020] The tension machine further comprises a speed reduction motor, the speed reduction motor is arranged on the tension frame, and the end of the output shaft away from the tension drum is fixedly connected to the output end of the speed reduction motor.

[0021] The liquid resistance braking mechanism comprises a liquid disc, a sealed liquid cavity filled with magnetorheological fluid in the liquid disc, a resistance wheel set in the liquid cavity, a resistance vane rotatable in the resistance wheel set, and a motor for driving the resistance vane of the resistance wheel set to rotate through a switching assembly; and the liquid disc is externally provided with a magnetic domain regulation mechanism for regulating the viscosity of the magnetorheological fluid. The magnetic domain regulation mechanism comprises a fixed ring set, a plurality of telescopic slide rod assemblies, and a regulation unit for driving the telescopic slide rod assemblies to extend and retract; the slide rod assembly comprises a slide block, a plurality of connecting rods arranged in the fixed ring set and radially along the fixed ring set, and the first ends of adjacent two connecting rods are hingedly connected to the slide block at the ring slide groove on the periphery of the fixed ring set, and the tail end hinging points of the adjacent two connecting rods are located on a circle concentric with the ring slide groove, and a plurality of slide blocks are slidably arranged in the ring slide groove on the periphery of the fixed ring set; an excitation coil is embedded in the connecting rod, and a magnetic core body is encapsulated in the slide block; the lead wires of the excitation coil are collected through a micro wire slot formed in the interior of the slide block and are electrically connected with an external controllable power supply through a current collection ring arranged on the fixed ring frame. The regulation unit comprises a servo motor, a gear, a sleeve ring, a tooth column, and a regulation rod, the servo motor is fixedly connected to the tension machine frame, the gear is fixedly sleeved on the output end of the servo motor, the sleeve ring is rotatably arranged on the center ring, the tooth column is annularly and equidistantly fixedly arranged on one end of the sleeve ring away from the center ring, the gear is meshingly connected with a plurality of tooth columns, one end of the regulation rod is fixedly connected to the outer wall of the sleeve ring, and the other end of the regulation rod is rotatably connected to a group of slide blocks close to the end of the ring slide groove.

[0022] The tension machine is integrated with the liquid resistance braking mechanism and the magnetic domain regulation mechanism. The liquid resistance braking mechanism provides braking force through the magnetorheological fluid and can actively regulate the fluid resistance through the movement of the internal resistance vane; the magnetic domain regulation mechanism changes the physical distribution area of the excitation coil on the slide rod assembly through the expansion and contraction of the slide rod assembly, thereby continuously adjusting the action range of the synthesized magnetic field and regulating the rheological properties of the magnetorheological fluid. The two mechanisms work together to determine the total braking force finally output, realizing wide-range, precise, and rapid adjustment of the tension. The present application effectively improves the stability and safety of the pay-off process, and is especially suitable for high-standard construction scenes such as high-voltage transmission lines.

[0023] Compared with the prior art, the present application has the following advantages:

[0024] 1. The present application realizes the composite control of the magnetic field range coarse adjustment and the fluid resistance fine adjustment of the braking force through the technical scheme of the cooperation and linkage of the liquid resistance braking mechanism and the magnetic domain regulation mechanism, overcomes the defects of low precision and slow response caused by the single parameter adjustment such as current or oil pressure in the traditional braking system, and fundamentally solves the technical problem of poor braking precision of the tensioning equipment.

[0025] 2、The present application also realizes the dynamic change of the angle of attack of the blade according to the working condition by designing the resistance wheel group composed of the deflectable resistance blade, so that the fluid dynamics resistance in the magnetorheological fluid is actively modulated. This further solves the contradiction that the traditional magnetorheological brake is insufficient in braking force in the low viscosity state and difficult to dissipate heat in the high viscosity state, significantly widens the effective braking range and improves the thermal stability.

[0026] 3、The present application also realizes the continuous and accurate change of the effective area of the magnetic field by physically expanding or contracting the magnetic domain regulation mechanism, so that the regulation range of the viscosity of the magnetorheological fluid is widened at the source. This breaks through the limitation of the traditional method of changing the magnetic field by adjusting the current intensity, and further solves the technical bottleneck of narrow dynamic range of braking torque and difficulty in fine adjustment under small tension working condition.

[0027] The interaction between the liquid resistance brake and the magnetic domain regulation mechanism in the present application is as follows:

[0028] First step: setting the basic viscosity of the magnetic field (executed by the magnetic domain regulation mechanism). First, according to the target tension value, the magnetic domain regulation mechanism sets a global basic viscosity for the magnetorheological fluid in the liquid resistance brake mechanism. This is equivalent to setting a macroscopic and wide-range output reference for the entire brake system (i.e. "coarse adjustment");

[0029] Second step: blade motion modulates dynamic resistance (executed by the liquid resistance brake mechanism). On the basis of the set basic viscosity, the resistance wheel group rotates in the magnetorheological fluid. By switching the angle of the resistance blade through the switching component, the fluid dynamics resistance encountered during rotation can be actively and quickly modulated. This is equivalent to making local, rapid and fine resistance correction (i.e. "fine adjustment") on the macroscopic reference, for real-time compensation of tension changes caused by speed fluctuations, external disturbances, etc.;

[0030] Third step: nonlinear cooperative output. The total braking force acting on the output shaft is not the simple arithmetic sum of the above two steps, but the nonlinear coupling result of the interaction between the magnetorheological fluid at a certain viscosity and the blade in a certain form. The two mechanisms form a closed loop through the control system, the magnetic domain regulation mechanism sets the working point, and the liquid resistance brake mechanism dynamically fine-tunes, and the two work together to achieve stable control with high precision and high response speed in a wide range (from small tension to large tension). BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 The structure diagram of the traction machine and the tension machine of the present application;

[0032] Figure 2 The structure diagram of the tension machine, the liquid resistance brake mechanism and the magnetic domain regulation mechanism of the present application;

[0033] Figure 3 The schematic diagram of the tensioner structure of the present application;

[0034] Figure 4 The schematic diagram of the tensioner, the hydraulic resistance braking mechanism and the magnetic field regulating mechanism of the present application;

[0035] Figure 5 The schematic diagram of the internal structure of the tensioner of the present application;

[0036] Figure 6 The schematic diagram of the hydraulic resistance braking mechanism and the magnetic field regulating mechanism of the present application;

[0037] Figure 7 The schematic diagram of the hydraulic resistance braking mechanism of the present application;

[0038] Figure 8 The schematic diagram of the weak resistance state of the resistance wheel group of the present application;

[0039] Figure 9 The schematic diagram of the strong resistance state of the resistance wheel group of the present application;

[0040] Figure 10 The schematic diagram of the resistance wheel group and the switching assembly of the present application;

[0041] Figure 11 The schematic diagram of the magnetic field regulating mechanism of the present application;

[0042] Figure 12 The schematic diagram of the fixed ring group, the slide rod assembly and the regulating unit of the present application;

[0043] Figure 13 The schematic diagram of the fixed ring group, the slide rod assembly and the regulating unit of the present application;

[0044] Figure 14 The schematic diagram of the maximum magnetic field range state of the magnetic field regulating mechanism of the present application;

[0045] Figure 15 The schematic diagram of the minimum magnetic field range state of the magnetic field regulating mechanism of the present application.

[0046] Explanation of the figure marks:

[0047] 1, traction machine; 2, tensioner; 3, traction frame; 4, traction reel; 5, guide mechanism; 6, hydraulic resistance braking mechanism; 7, magnetic field regulating mechanism;

[0048] 201, tensioner frame; 202, tensioning mechanism; 203, output shaft; 204, speed reduction motor; 205, tension reel;

[0049] 601. Liquid tray; 602. Liquid chamber; 603. Resistance wheel assembly; 604. Switching component;

[0050] 6031, Rotary drum; 6032, Rotary rod; 6033, Resistance blade; 6034, Rotary ring; 6035, Wheel frame;

[0051] 6041, Friction wheel; 6042, Motor; 6043, Synchronous ring frame; 6044, Limiting rod; 6045, Deflection block; 6046, Fixing hole; 6047, Sliding hole;

[0052] 701. Support frame; 702. Fixing ring assembly; 703. Slide rod assembly; 704. Control unit;

[0053] 7021. Fixed ring frame; 7022. Ring slide groove; 7023. Support rod; 7024. Center ring;

[0054] 7031, slider; 7032, connecting rod;

[0055] 7041, Servo motor; 7042, Gear; 7043, Collar; 7044, Gear post; 7045, Control lever. Detailed Implementation

[0056] like Figures 1 to 13 As shown, the present invention relates to a tensioning linkage device, comprising a traction machine 1 and a tensioning machine 2.

[0057] The traction machine 1 includes a traction frame 3, a traction drum 4, and a guide mechanism 5. The traction drum 4 is mounted on the traction frame 3, and the guide mechanism 5 is located on the traction frame 3.

[0058] The tension machine 2 includes a tension machine frame 201, an output shaft 203 and a tension drum 205. The tension drum 205 is rotatably mounted on the tension machine frame 201, and the output shaft 203 is fixedly connected to the tension drum 205.

[0059] A hydraulic resistance braking mechanism 6 is fixedly installed on the tension frame 201, and the hydraulic resistance braking mechanism 6 is sleeved on the output shaft 203;

[0060] The tension machine 2 also includes a geared motor 204, which is mounted on the tension machine frame 201. The end of the output shaft 203 away from the tension drum 205 is fixedly connected to the output end of the geared motor 204.

[0061] The liquid resistance braking mechanism 6 comprises a liquid disc 601, a closed liquid cavity 602 filled with magnetorheological liquid in the liquid disc 601, a resistance wheel group 603 in the liquid cavity 602, the resistance wheel group 603 comprising rotatable resistance blades 6033, a motor 6042 for driving the resistance blades 6033 of the resistance wheel group 603 to rotate through a switching assembly 604; and the liquid disc 601 is externally provided with a magnetic domain regulation mechanism 7 for regulating the viscosity of the magnetorheological liquid.

[0062] The core working principle of the application is the intelligent cooperation of the liquid resistance braking mechanism 6 and the magnetic domain regulation mechanism 7. When the system starts to work, the magnetic domain regulation mechanism 7 first changes the magnetic field coverage area formed by the excitation assembly by driving the slide rod assembly 703 to expand or contract through the internal servo motor 7041 according to the target tension instruction. When a large braking force is needed, the magnetic field area is expanded to the maximum, so that the overall viscosity of the magnetorheological liquid in the liquid cavity 602 increases sharply, forming a strong basic braking force; when a small braking force is needed, the magnetic field area is contracted to the minimum, and only the local area of the magnetorheological liquid increases in viscosity, and the basic braking force is weakened. At the same time, the resistance wheel group 603 in the liquid resistance braking mechanism 6 rotates at high speed with the output shaft 203, and the resistance blades 6033 thereon cut the movement in the viscous magnetorheological liquid to generate a huge fluid resistance; by adjusting the deflection angle of the blades through the switching assembly 604, the resistance effect can be further amplified or reduced. Finally, the total braking force output by the system is the nonlinear superposition result of the basic viscosity regulated by the magnetic field and the dynamic resistance modulated by the blade movement, realizing the millisecond-level and high-precision closed-loop control of the cable tension.

[0063] In the application, the traction machine 1 and the tension machine 2 are linked through an electric control system. The traction drum 4 of the traction machine 1 provides a continuous traction force, and the guide mechanism 5 ensures that the cable is introduced in the correct direction. The deceleration motor 204 of the tension machine 2 provides a pay-off power, and the tensioning mechanism 202 changes the diameter of the winding part of the traction drum 4 through a mechanical structure, so as to adapt to different winding cables.

[0064] In the embodiment of the application, the middle part of the resistance wheel group 603 is fixedly sleeved on the output shaft 203, and the switching assembly 604 is sleeved on the outer wall of the resistance wheel group 603.

[0065] In the embodiment of the present application, the resistance wheel set 603 comprises a rotating drum 6031, a rotating rod 6032, resistance blades 6033, a rotating ring 6034 and a wheel frame 6035, the rotating drum 6031 is rotatably arranged in the liquid tray 601, the rotating drum 6031 is fixedly sleeved on the output shaft 203, the resistance blades 6033 are annularly and equidistantly rotatably connected to the outer wall of the rotating drum 6031, the rotating rod 6032 is fixedly connected to one end of the resistance blades 6033 away from the rotating drum 6031, the rotating ring 6034 is annularly and equidistantly provided with through holes, the rotating ring 6034 is movably sleeved on the rotating rods 6032 through the through holes, and the wheel frame 6035 is annularly and equidistantly fixedly arranged on the outer wall of the rotating ring 6034. The switching assembly 604 is arranged on the wheel frame 6035.

[0066] In the present application, the liquid resistance braking mechanism 6 is a closed braking unit, the liquid tray 601 and the liquid cavity 602 constitute a working container of the magnetorheological fluid. When the output shaft 203 drives the resistance wheel set 603 fixed thereon to rotate in the liquid cavity 602 filled with the magnetorheological fluid, a basic braking torque is generated. The switching assembly 604 dynamically changes the working state of the resistance wheel set 603 to realize different resistance characteristics.

[0067] In the present application, the resistance wheel set 603 is the key to realize the function of actively changing the fluid resistance. The rotating drum 6031 rotates with the output shaft 203 as a base body, and the resistance blades 6033 are not fixed but can be deflected around the connecting points with the rotating drum 6031. All the resistance blades 6033 can be forced to change the angles synchronously by the rotating rod 6032, so as to change the attack angle and the flow area of the blades in the fluid integrally, and realize the switching from the low resistance state to the high resistance state.

[0068] As another embodiment of the present application, the switching assembly 604 comprises a friction wheel 6041, a motor 6042, a synchronous ring frame 6043, a limiting rod 6044 and a deflection block 6045, the friction wheel 6041 is rotatably arranged on the wheel frame 6035, the motor 6042 is fixedly arranged on the wheel frame 6035 and the output end thereof is fixedly connected to the friction wheel 6041, the synchronous ring frame 6043 is movably sleeved on the friction wheels 6041, the limiting rod 6044 is annularly and equidistantly fixedly arranged on the outer wall of the synchronous ring frame 6043, one end of the deflection block 6045 is fixedly connected to the rotating rod 6032, and the other end of the deflection block 6045 is movably sleeved on the limiting rod 6044.

[0069] The motor 6042 drives the friction wheel 6041 to rotate, and the friction wheel 6041 drives the synchronous ring frame 6043 to move along the axial direction through the friction force between the friction wheel 6041 and the synchronous ring frame 6043. When the synchronous ring frame 6043 moves, the limiting rod 6044 on the synchronous ring frame 6043 applies a force through the sliding hole 6047 on the deflection block 6045. Since one end of the deflection block 6045 is fixedly connected to the rotating rod 6032 through the fixed hole 6046, the force will force the rotating rod 6032 to swing, thereby accurately controlling the deflection angle of the resistance vane 6033.

[0070] As another embodiment of the application, the deflection block 6045 is provided with a fixed hole 6046 at one end and a sliding hole 6047 at the other end, the deflection block 6045 is fixedly sleeved on the rotating rod 6032 through the fixed hole 6046 at one end, and the deflection block 6045 is slidably sleeved on the limiting rod 6044 through the sliding hole 6047 at the other end.

[0071] In the embodiment of the application, the magnetic field regulating mechanism 7 comprises a fixed ring group 702, a plurality of telescopic slide rod assemblies 703, a regulating unit 704 for driving the telescopic slide rod assemblies 703 to telescope, the slide rod assembly 703 comprises a slide block 7031 and a plurality of connecting rods 7032 arranged radially in the fixed ring group 702, the first ends of adjacent two connecting rods 7032 are hingedly connected to the slide block 7031 at the ring sliding groove 7022 on the periphery of the fixed ring group 702, the tail end hinging points of the adjacent two connecting rods 7032 are located on a circle concentric with the ring sliding groove 7022, and a plurality of slide blocks 7031 are slidably arranged on the ring sliding groove 7022 on the periphery of the fixed ring group 702; the inside of the connecting rod 7032 is embedded with an excitation coil, and the inside of the slide block 7031 is encapsulated with a magnetic core; the leads of the excitation coil are collected through a micro wire slot arranged in the inside of the slide block 7031 and are electrically connected with an external controllable power supply through a collector ring arranged on the fixed ring frame 7021.

[0072] In the application, the magnetic field regulating mechanism 7 regulates the magnetic field by changing the mechanical structure. The support frame 701 provides support, and the fixed ring group 702 constitutes a static reference. By driving the slide rod assembly 703 to slide on the fixed ring group 702, the area of the region surrounded by the excitation coil carried thereon can be changed, so that the continuous and controllable change of the magnetic field acting range is realized.

[0073] In the embodiment of the present application, the fixed ring set 702 comprises a fixed ring frame 7021, a ring sliding groove 7022, a support rod 7023 and a center ring 7024, the fixed ring frame 7021 is fixedly arranged at the top end of the support frame 701, the ring sliding groove 7022 is an annular groove arranged on the fixed ring frame 7021 and the two ends of the ring sliding groove 7022 are not communicated with each other, the support rod 7023 is annularly and equidistantly arranged on the inner wall of the fixed ring frame 7021, the center ring 7024 is fixedly connected to the end of the support rod 7023 away from the fixed ring frame 7021, and the center ring 7024 is movably sleeved on the output shaft 203; the first end of the connecting rod 7032 of the slide rod assembly 703 is rotatably connected to the fixed ring frame 7021; the support frame 701 is arranged in the tension frame 201, and the fixed ring set 702 is fixedly arranged at the top end of the support frame 701.

[0074] In the embodiment of the present application, the design that the two ends of the ring sliding groove 7022 are not communicated with each other ensures that the sliding range of the sliding block 7031 is limited in a specific arc interval, thereby accurately defining that the minimum shrinkage of the magnetic field region is a sector and the maximum expansion is a nearly circular state.

[0075] In the embodiment of the present application, the slide rod assembly 703 constitutes a telescopic connecting rod mechanism. When one of the sliding blocks 7031 is driven, all the sliding blocks 7031 will move synchronously through the transmission of the connecting rod 7032, thereby ensuring that the whole mechanism is stably expanded or contracted, so as to drive the excitation coil array to form a uniformly changed magnetic field region.

[0076] As another embodiment of the present application, the control unit 704 comprises a servo motor 7041, a gear 7042, a sleeve ring 7043, a tooth column 7044 and a control rod 7045, the servo motor 7041 is fixedly connected to the tension frame 201, the gear 7042 is fixedly sleeved on the output end of the servo motor 7041, the sleeve ring 7043 is rotatably arranged on the center ring 7024, the tooth column 7044 is annularly and equidistantly fixedly arranged at the end of the sleeve ring 7043 away from the center ring 7024, the gear 7042 is meshingly connected with the tooth column 7044, and one end of the control rod 7045 is fixedly connected to the outer wall of the sleeve ring 7043, and the other end of the control rod 7045 is rotatably connected to a group of sliding blocks 7031 close to the end of the ring sliding groove 7022.

[0077] When the servo motor 7041 drives the slide rod assembly 703 to expand or contract, the physical area of the built-in excitation coil is essentially changed. When the external current is supplied to all excitation coils through the collector ring, each coil generates a magnetic field with the assistance of the magnetic core around it. The magnetic fields generated by all coils superimpose each other and jointly act on the area of the liquid disc 601 of the liquid resistance brake mechanism 6. Therefore, when the slide rod assembly 703 is fully expanded, the excitation coil has the maximum distribution range, and the synthetic magnetic field area is also the largest; when it is contracted to a sector, the coil is concentrated on one side, and the synthetic magnetic field area is the smallest. By controlling the expansion degree through the control unit 704, the continuous and accurate control of the synthetic magnetic field acting range can be realized.

[0078] The control unit 704 in the present application provides accurate driving. The servo motor 7041 drives the sleeve ring 7043 to rotate accurately on the center ring 7024 through the meshing of the gear 7042 and the tooth column 7044. The rotary motion of the sleeve ring 7043 is converted into the sliding motion of the slider 7031 at the end through the control rod 7045, thereby controlling the expansion degree of the entire slide rod assembly 703, and realizing the servo control of the magnetic field acting area.

[0079] As another embodiment of the present application, the tensioning mechanism 202 is arranged on the tensioning drum 205; the magnetic field control mechanism 7 arranged in the tensioning frame 201 is located at the end of the liquid resistance brake mechanism 6 away from the tensioning drum 205.

[0080] A brake method of a tension linkage device, comprising the following steps:

[0081] The speed reducer motor 204 of the tension machine 2 is started to provide the pay-off power for the tensioning drum 205, and at the same time, the traction drum 4 of the traction machine 1 starts to rotate to provide the traction force;

[0082] First, the magnetic field control mechanism 7 sets a global basic viscosity for the magneto-rheological fluid in the liquid resistance brake mechanism 6;

[0083] Second step: blade motion modulates dynamic resistance. On the basis of the set basic viscosity, according to the real-time tension feedback and the working condition, the resistance wheel set 603 rotates in the magneto-rheological fluid, the angle of the resistance blade 6033 is changed through the switching assembly 604, and the hydrodynamic resistance encountered by the resistance blade 6033 during rotation is modulated;

[0084] Third step: nonlinear cooperative output: the actual cable tension is continuously monitored and compared with the target tension value, the magnetic field acting range of the magnetic field control mechanism 7, the coarse adjustment of the deflection angle of the resistance blade 6033, and the fine adjustment are dynamically adjusted in real time, forming a high-response closed-loop control, and finally the total brake force acting on the output shaft 203.

[0085] Working principle: the embodiment provides a tension linkage device, in use, first, system initialization and target setting. The operator sets the target tension value of this time through the remote control client. The control system is powered on, the speed reducer motor 204 of the tension machine 2 is started, the tension drum 205 is provided with the pay-off power, and the traction drum 4 of the traction machine 1 starts to rotate to provide the traction force. The device enters the standby state.

[0086] Secondly, the composite generation and coarse adjustment of the core braking force. The system main controller sends instructions to the magnetic field regulation mechanism 7 according to the target tension. The servo motor 7041 drives the ring 7043 to rotate through the meshing of the gear 7042 and the tooth column 7044, and then pushes the slide rod assembly 703 to slide on the fixed ring group 702 through the regulation rod 7045. The core purpose of this is to change the physical distribution range of the excitation coil integrated in the connecting rod 7032, so as to continuously and accurately change the effective action area of the magnetic field acting on the liquid resistance braking mechanism 6, realize the wide-range coarse adjustment of the magnetorheological fluid basic viscosity, and set an initial wide-range output reference for the whole braking system.

[0087] Furthermore, the dynamic enhancement and fine adjustment of the braking force. On the basis of the magnetic field setting, the rotation of the output shaft 203 drives the resistance wheel group 603 to rotate at high speed in the magnetorheological fluid. At the same time, the system dynamically adjusts the braking effect through the switching assembly 604 according to the real-time tension feedback and working conditions such as terrain slope and wind speed. The motor 6042 drives the friction wheel 6041 to change the deflection angle of all resistance blades 6033 synchronously through the transmission of synchronous ring frame 6043 and limiting rod 6044, which is equivalent to actively changing the paddle shape in the magnetorheological fluid, thereby greatly modulating the fluid dynamics resistance. This link is a fine adjustment of the braking force, which can quickly and accurately compensate for tension fluctuations.

[0088] Finally, intelligent cooperation and stable output of the double mechanism, the final state of the system operation is the intelligent fusion of the above two processes. The total braking force provided by the liquid resistance braking mechanism 6 is not the simple addition of the basic braking force set by the magnetic field regulation mechanism 7 and the dynamic resistance brought by the resistance blade 6033, but the result of nonlinear coupling and cooperative action of the two. During the whole pay-off process, the controller continuously monitors the actual cable tension and compares it with the target value, and adjusts the magnetic field action range of the magnetic field regulation mechanism 7, the coarse adjustment and the deflection angle of the resistance blade 6033 in real time and dynamically, forming a high-response closed-loop control, and finally ensuring that the cable tension is stably and accurately maintained at the set value, realizing high-quality tension pay-off operation.

[0089] The embodiments of the present application are disclosed above, but not limited to, the preferred embodiments, and those skilled in the art can make different deductions and changes according to the above embodiments, and the different deductions and changes should be within the protection scope of the present application as long as they do not deviate from the spirit of the present application.

Claims

1. A tension linkage device, characterized in that, It includes a traction machine (1) and a tension machine (2). The traction machine (1) includes a traction frame (3), a traction drum (4) and a guide mechanism (5). The traction drum (4) is mounted on the traction frame (3), and the guide mechanism (5) is located on the traction frame (3). The tension machine (2) includes a tension machine frame (201), an output shaft (203), and a tension drum (205). The tension drum (205) is rotatably mounted on the tension machine frame (201), and the output shaft (203) is fixedly connected to the tension drum (205). A hydraulic braking mechanism (6) is fixedly provided on the tension frame (201), and the hydraulic braking mechanism (6) is sleeved on the output shaft (203); The tension machine (2) also includes a geared motor (204), which is mounted on the tension machine frame (201). The end of the output shaft (203) away from the tension drum (205) is fixedly connected to the output end of the geared motor (204). The hydraulic braking mechanism (6) includes a liquid pan (601), a sealed liquid cavity (602) filled with magnetorheological fluid in the liquid pan (601), a resistance wheel assembly (603) in the liquid cavity (602), the resistance wheel assembly (603) including rotatable resistance blades (6033) and a motor (6042) that drives the resistance blades (6033) of the resistance wheel assembly (603) to rotate via a switching component (604); a magnetic domain control mechanism (7) for controlling the viscosity of the magnetorheological fluid is provided outside the liquid pan (601).

2. The tension linkage device according to claim 1, characterized in that, The resistance wheel assembly (603) is fixedly sleeved on the output shaft (203) in the middle, and the switching component (604) is sleeved on the outer wall of the resistance wheel assembly (603).

3. The tension linkage device according to claim 2, characterized in that, The resistance wheel assembly (603) includes a rotating cylinder (6031), a rotating rod (6032), resistance blades (6033), a rotating ring (6034), and a wheel frame (6035). The rotating cylinder (6031) is rotatably disposed within the liquid pan (601), and the rotating cylinder (6031) is fixedly sleeved on the output shaft (203). The resistance blades (6033) are rotatably connected to the outer wall of the rotating cylinder (6031) in a ring with equal spacing. The rotating rod (6034) 6032) is fixedly connected to the end of the resistance blade (6033) away from the rotating cylinder (6031). The rotating ring (6034) has through holes at equal intervals in a ring. The rotating ring (6034) is movably sleeved on a plurality of rotating rods (6032) through the through holes. The wheel frame (6035) is fixedly arranged in a ring at equal intervals on the outer wall of the rotating ring (6034). The switching component (604) is arranged on the wheel frame (6035).

4. The tension linkage device according to claim 3, characterized in that, The switching assembly (604) includes a friction wheel (6041), a motor (6042), a synchronous ring frame (6043), a limiting rod (6044), and a deflection block (6045). The friction wheel (6041) is rotatably mounted on the wheel frame (6035). The motor (6042) is fixedly mounted on the wheel frame (6035) and its output end is fixedly connected to the friction wheel (6041). The synchronous ring frame (6043) is movably sleeved on a plurality of the friction wheels (6041). The limiting rod (6044) is fixedly mounted in a ring at equal intervals on the outer wall of the synchronous ring frame (6043). One end of the deflection block (6045) is fixedly connected to the rotating rod (6032), and the other end of the deflection block (6045) is movably sleeved on the limiting rod (6044).

5. A tensioning linkage device according to claim 4, characterized in that, The deflection block (6045) has a fixing hole (6046) at one end and a sliding hole (6047) at the other end. One end of the deflection block (6045) is fixedly sleeved on the rotating rod (6032) through the fixing hole (6046), and the other end of the deflection block (6045) is slidably sleeved on the limiting rod (6044) through the sliding hole (6047).

6. The tension linkage device according to claim 1, characterized in that, The magnetic field control mechanism (7) includes a fixed ring assembly (702), a set of retractable slide rod assemblies (703), and a control unit (704) for driving the slide rod assembly (703) to extend and retract; the slide rod assembly (703) includes a slider (7031) and multiple connecting rods (7032) placed inside the fixed ring assembly (702) and arranged radially along the fixed ring assembly (702), with the first ends of two adjacent connecting rods (7032) hinged to the slider (7031) at the annular groove (7022) around the fixed ring assembly (702), and the... The hinge point at the tail end of the two adjacent connecting rods (7032) is located on a circumference concentric with the annular groove (7022). Several sliders (7031) are slidably disposed on the annular groove (7022) around the fixed ring group (702). An excitation coil is embedded inside the connecting rod (7032), and a magnetic core is encapsulated inside the slider (7031). The lead wire of the excitation coil is collected through a miniature wire groove opened inside the slider (7031) and electrically connected to an external controllable power supply via a collector ring disposed on the fixed ring group (702).

7. A tensioning linkage device according to claim 6, characterized in that, The fixed ring assembly (702) includes a fixed ring frame (7021), an annular groove (7022), a support rod (7023), and a central ring (7024). The fixed ring frame (7021) is fixedly mounted on the top of the support frame (701). The annular groove (7022) is an annular groove formed on the fixed ring frame (7021) with its two ends not connected to each other. The support rod (7023) is fixedly mounted in a ring at equal intervals on the inner wall of the fixed ring frame (7021). The central ring... The ring (7024) is fixedly connected to the end of the support rod (7023) away from the fixed ring frame (7021), and the central ring (7024) is movably sleeved on the output shaft (203); the first end of the connecting rod (7032) at the beginning of the slide rod assembly (703) is rotatably connected to the fixed ring frame (7021); the support frame (701) is located inside the tension frame (201), and the fixed ring group (702) is fixedly located at the top of the support frame (701).

8. A tensioning linkage device according to claim 7, characterized in that, The control unit (704) includes a servo motor (7041), a gear (7042), a collar (7043), a toothed column (7044), and a control rod (7045). The servo motor (7041) is fixedly connected to the tension frame (201). The gear (7042) is fixedly sleeved on the output end of the servo motor (7041). The collar (7043) is rotatably mounted on the central ring (7024). The toothed column (7044) is fixedly mounted in a ring at equal intervals at one end of the collar (7043) away from the central ring (7024). The gear (7042) meshes with several of the toothed columns (7044). One end of the control rod (7045) is fixedly connected to the outer wall of the collar (7043), and the other end of the control rod (7045) is rotatably connected to a group of sliders (7031) near the end of the ring groove (7022).

9. A tensioning linkage device according to claim 1, characterized in that, The tension drum (205) is provided with a tensioning mechanism (202); the magnetic field control mechanism (7) placed in the tension frame (201) is located at the end of the liquid resistance braking mechanism (6) away from the tension drum (205).

10. A tension machine, characterized in that, It includes a tension frame (201), an output shaft (203), and a tension drum (205). The tension drum (205) is rotatably mounted on the tension frame (201), and the output shaft (203) is fixedly connected to the tension drum (205). A hydraulic braking mechanism (6) is fixedly provided on the tension frame (201), and the hydraulic braking mechanism (6) is sleeved on the output shaft (203); The tension machine (2) also includes a geared motor (204), which is mounted on the tension machine frame (201). The end of the output shaft (203) away from the tension drum (205) is fixedly connected to the output end of the geared motor (204). The hydraulic braking mechanism (6) includes a liquid pan (601), a sealed liquid cavity (602) filled with magnetorheological fluid in the liquid pan (601), a resistance wheel assembly (603) in the liquid cavity (602), the resistance wheel assembly (603) including rotatable resistance blades (6033) and a motor (6042) that drives the resistance blades (6033) of the resistance wheel assembly (603) to rotate via a switching component (604); a magnetic domain control mechanism (7) for adjusting the viscosity of the magnetorheological fluid is provided outside the liquid pan (601); the magnetic domain control mechanism (7) includes a fixed ring assembly (702) and a set of retractable slide rod assemblies (703). ), and a control unit (704) for driving the extension and retraction of the slide rod assembly (703); the slide rod assembly (703) includes a slider (7031) and a plurality of connecting rods (7032) placed in the fixed ring group (702) and arranged radially along the fixed ring group (702). The first ends of two adjacent connecting rods (7032) are hinged to the sliders (7031) at the annular groove (7022) around the fixed ring group (702), and the tail hinge points of two adjacent connecting rods (7032) are located on a circle concentric with the annular groove (7022). A plurality of the sliders (7031) are slidably disposed in the annular groove (702) around the fixed ring group (702). 7022); an excitation coil is embedded inside the connecting rod (7032), and a magnetic core is encapsulated inside the slider (7031); the lead wire of the excitation coil is collected through a miniature wire groove opened inside the slider (7031) and electrically connected to an external controllable power supply via a collector ring set on the fixed ring group (702); the control unit (704) includes a servo motor (7041), a gear (7042), a collar (7043), a gear column (7044), and a control rod (7045). The servo motor (7041) is fixedly connected to the tension frame (201), and the gear (7022) is connected to the tension frame (201). 042) The collar (7043) is fixedly sleeved on the output end of the servo motor (7041), and is rotatably mounted on the central ring (7024). The gear (7044) is fixedly mounted in a ring at equal intervals on one end of the collar (7043) away from the central ring (7024). The gear (7042) meshes with several gears (7044). One end of the control rod (7045) is fixedly connected to the outer wall of the collar (7043), and the other end of the control rod (7045) is rotatably connected to a group of sliders (7031) near the end of the ring groove (7022).

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