Electric tensioner and control system thereof

Abstract

The invention discloses an electric tensioner and a control system of the tensioner, and relates to the technical field of tensioners. Through the arrangement of the energy recovery mechanism, the energy recovery mechanism and the first tension roller can be used in a matched mode to jointly regulate and control the tension on the cable, the energy recovery assembly can recover mechanical energy generated in the braking or speed reduction process of the tensioner while braking the second tension roller, the mechanical energy is converted into electric energy, and the electric energy is stored in the energy storage battery; compared with the mode that friction braking is utilized in transmission, the damping device has the advantages that resistance borne when a rotating coil cuts a magnetic induction line can serve as braking force, the effect of adjusting the rotating speed of the second tension roller in a non-contact state is achieved, the situation that a friction plate is abraded for a long time, and consequently the damping force value drifts is avoided, and the service life of the damping device is prolonged. The parameter adjustment precision of the tension control system is ensured to be at a high level, so that the tensioner has high output stability and control response characteristics under a dynamic working condition.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tension machines, in particular to an electric tension machine and a control system of the tension machine. BACKGROUND

[0002] The electric tension machine is a key equipment in the field of power grid construction and industrial processing. It takes the motor as the core power source and realizes precise tension control through an intelligent control system.

[0003] Among them, in the current design of the tension machine, the driven wheel realizes power transmission through the friction force between the power transmission line and its contact surface. Since the driven wheel has a large mass, it will generate significant rotational inertia when rotating at high speed. When the driving system stops working, the driven wheel will continue to rotate due to inertia effect, thereby causing the risk of excessive winding of the power transmission line. In order to suppress this inertial motion, the current electric tension machine is configured with friction damping in the driven wheel shaft system, which consumes the inertial kinetic energy by increasing the friction resistance between the shaft and the rack, effectively avoiding the continuous idling of the driven wheel after stopping.

[0004] Referring to the patent application with the publication number CN221565330U, a novel electric tension machine is disclosed. By using an electric motor to replace the diesel engine to drive the power wheel of the tension machine, the problems of large noise, large energy consumption and exhaust emission of the diesel engine are solved. The speed control of the motor is more accurate than that of the diesel engine, which facilitates the adjustment of the pay-off speed at any time. By setting an inverter, the mechanical energy of the motor is recycled during the pulling and pay-off process, and then output to the outside for use in other electrical equipment or for energy storage using a storage battery. When recycling the energy of the tension machine, it is also the process of providing tension by the tension machine, thereby solving the problem of heat dissipation of the traditional tension machine by using a hydraulic cylinder.

[0005] The above-mentioned electric tension machine in the prior art has the following defects in actual use: In the above-mentioned patent, the friction resistance between the shaft and the rack is increased to consume the inertial kinetic energy, so as to achieve the effect of quickly braking the driven wheel. However, the gradual wear of the surface of the friction brake pad after long-term operation will cause the damping force value to drift, thereby causing the parameter adjustment accuracy of the tension control system to gradually decrease. This mechanical loss not only shortens the service life of the friction brake pad, but also directly affects the output stability and control response characteristics of the tension machine under dynamic working conditions. Secondly, the rotational speed of the driven wheel is controlled by friction braking, so that the kinetic energy of the driven wheel is completely dissipated in the form of heat, which makes it impossible to recycle the kinetic energy of the driven wheel, thereby causing waste of energy.

[0006] Therefore, the present application proposes an electric tension machine and a control system of the tension machine to solve the above-mentioned problems. SUMMARY

[0007] In response to the deficiencies in the prior art, the present invention provides an electric tension machine and a control system for the tension machine, which solves the problem that the existing electric tension machine consumes the inertial kinetic energy of the driven wheel by increasing the friction resistance between the shaft and the frame, so that after long-term operation, the gradual wear of the surface of the friction brake pad will cause the damping force value to drift, and then cause the parameter adjustment accuracy of the tension control system to gradually decay. This mechanical loss not only shortens the service life of the friction brake pad, but also directly affects the output stability and control response characteristics of the tension machine under dynamic working conditions; and the speed of the driven wheel is controlled by friction braking, so that the kinetic energy of the driven wheel is completely dissipated in the form of heat, resulting in the inability to recycle the kinetic energy of the driven wheel, thereby causing energy waste.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: an electric tension machine, including a movable bracket, and further comprising: The first tension roller and the second tension roller are respectively rotatably arranged on both sides of the movable bracket through a transmission shaft, and a servo motor for driving the first tension roller to rotate is also fixedly arranged on the side wall of the movable bracket; An energy recovery mechanism is provided on the outer wall of the movable bracket close to the second tension roller, and is used to cooperate with the first tension roller to adjust the tensioning force of the second tension roller. It is also capable of recovering the mechanical energy generated by the tension machine during braking or deceleration, converting it into electrical energy and storing it in the energy storage battery. The energy recovery mechanism also includes a supporting cylinder and a protective cover detachably arranged at one end of the supporting cylinder. A plurality of avoidance grooves are evenly arranged on the outer wall of the protective cover. The interior of the supporting cylinder is evenly provided with a first energy recovery component, a second energy recovery component and a third energy recovery component for cooperating with each other or operating independently to regulate the braking force of the second tension roller. The first energy recovery component, the second energy recovery component and the third energy recovery component all regulate their own braking force on the second tension roller through the driving component, and at the same time, according to the increase or decrease of the braking force, the coolant flow during the braking process is automatically and synchronously increased or decreased through the coolant pumping component.

[0009] Furthermore, a fourth gear is fixedly provided at one end of the transmission shaft close to the supporting cylinder, which is used to simultaneously drive the first energy recovery component, the second energy recovery component and the third energy recovery component to operate. The first energy recovery component, the second energy recovery component and the third energy recovery component are simultaneously connected to the annular tube, and the annular tube is connected to the coolant storage cylinder through a pipeline.

[0010] Further, the driving assembly comprises an electric motor fixedly arranged on the outer wall of the protective cover, an output end of the electric motor rotates through the bearing cylinder and is connected with a driving ring assembly through a connecting piece, the driving ring assembly comprises a first arc-shaped block, a second arc-shaped block and a third arc-shaped block connected with each other in sequence, and together forms a complete closed loop structure, and a first arc-shaped rack, a second arc-shaped rack and a third arc-shaped rack are fixedly arranged on the outer walls of the first arc-shaped block, the second arc-shaped block and the third arc-shaped block respectively.

[0011] Further, the first arc-shaped block, the second arc-shaped block and the third arc-shaped block are the same in structure, and the arc-shaped side walls of the first arc-shaped block, the second arc-shaped block and the third arc-shaped block are equally divided into three regions, which are a first segment region, a second segment region and a third segment region in sequence, the first arc-shaped rack is fixedly arranged in the first segment region of the first arc-shaped block, the second arc-shaped rack is fixedly arranged in the second segment region of the second arc-shaped block, and the third arc-shaped rack is fixedly arranged in the third segment region of the third arc-shaped block, the two ends of the third arc-shaped rack and the first arc-shaped rack abut, and the first arc-shaped block, the second arc-shaped block and the third arc-shaped block rotate in a clockwise direction.

[0012] Further, the cooling liquid pumping assembly comprises a cooling liquid storage cylinder fixedly arranged in the bearing cylinder, a piston plate is sealingly and slidably arranged in the cooling liquid storage cylinder, a second push-pull rod is fixedly arranged at one end of the piston plate, a circular plate is slidably arranged at one end of the second push-pull rod and fixedly arranged with a second gear, and the outer wall of the second push-pull rod is slidably sleeved with a spring between the piston plate and the outer wall of the bearing cylinder.

[0013] Further, the first energy recovery assembly, the second energy recovery assembly and the third energy recovery assembly are the same in structure, the first energy recovery assembly comprises a machine shell detachably arranged in the bearing cylinder, a rotor is rotatably arranged in the machine shell through a support, a first gear is rotatably arranged at one end of the rotor and fixedly arranged with the fourth gear, and slide sleeves are fixedly arranged on the inner walls of the machine shell.

[0014] Further, one end of the two first push-pull rods is fixedly provided with a connecting rod, a screw rod is threaded through the middle position of the connecting rod, the screw rod is fixedly provided with a second gear at the end away from the first push-pull rod, an annular heat dissipation pipe is further fixedly arranged on the inner wall of the shell, a flow control assembly for discharging the internal cooling liquid of the annular heat dissipation pipe is arranged on the outer wall of the annular heat dissipation pipe, and a cooling liquid input pipe is further fixedly arranged at the bottom of the annular heat dissipation pipe.

[0015] Further, the flow control assembly comprises a shell, a circular plate is rotatably arranged in the shell, a through hole is formed in the circular plate, a rotating shaft is fixedly arranged at the center position of the sidewall of the circular plate, the rotating shaft rotatably penetrates the shell and is fixedly provided with a third gear, the third gear is engaged with a straight gear rack, the straight gear rack is fixedly arranged at the top of the connecting rod through a support column, first and second return pipes are fixedly arranged on the two sides of the outer wall of the shell and are in communication with the interior of the shell, and a first one-way valve is fixedly arranged in the second return pipe and only allows the cooling liquid to flow out of the shell.

[0016] The application further discloses a control system of the electric tension machine, which is used for the electric tension machine and comprises a control box and a tension sensor for acquiring tension information of a cable on the electric tension machine.

[0017] The application provides an electric tension machine and a control system of the tension machine. 1. An electric tension machine and a control system of the tension machine, which can be used in cooperation with a first tension roller through the setting of an energy recovery mechanism, can jointly control the tension of a cable, and can recover mechanical energy of the tension machine in the braking or deceleration process into electrical energy and store the electrical energy in an energy storage battery, thereby avoiding energy waste.

[0018] 2. An electric tensioner and tensioner control system, wherein a first energy recovery component, a second energy recovery component, and a third energy recovery component are provided in an energy recovery mechanism, and in conjunction with a drive component, one or more of the first, second, and third energy recovery components are selectively and sequentially engaged in braking the second tension roller, depending on the desired tension value or braking force value. This allows the three energy recovery components to operate independently or in conjunction with each other, achieving the purpose of linearly regulating the braking force from small to large, significantly increasing the control range of the braking force value. Furthermore, when the first energy recovery component is operating, the area of ​​the overlap between the permanent magnet and the coil in the rotor is adjusted to control the area of ​​the magnetic flux lines cut by the coil during rotation, thereby controlling the resistance value of a single energy recovery component relative to the second tension roller. This further expands the adjustment range of the braking force value for the second tension roller, ensuring that the tension applied to the cable remains relatively stable.

[0019] 3. An electric tension machine and a control system for the tension machine, through the linkage design between the coolant pumping component, the annular heat dissipation pipe and the flow control component and the drive component, can control the relative area between the through hole and the first return pipe and the second return pipe by driving the third gear to rotate by the spur rack when the drive component adjusts the position of the permanent magnet, thereby controlling the amount of coolant passing through per unit time, that is, when the relative area between the through hole and the first return pipe and the second return pipe increases, the amount of coolant flowing through the through hole at this position increases, and conversely, the coolant flow rate flowing through this position decreases. The heat dissipation capacity is positively correlated with the gradually increasing induced current value in the rotor. After the coolant flow rate increases, the heat exchange capacity of the annular heat dissipation pipe is enhanced, thereby being able to take away more heat from the rotor surface, thereby achieving effective protection of the energy recovery component. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the first overall three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the second overall three-dimensional structure of the present invention; Figure 3 This is a schematic diagram of the bottom structure of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure of part A; Figure 5 This is a schematic structural diagram of the energy recovery mechanism, the transmission shaft, and the second tension roller in an assembled state according to the present invention; Figure 6 This is a schematic structural diagram of a first assembled state of the transmission shaft and the energy recovery mechanism of the present invention; Figure 7 For the present invention Figure 6 A schematic diagram of the enlarged structure of part B; Figure 8 The second assembly state structure diagram of the transmission shaft and the energy recovery mechanism of the present application; Figure 9 The three-dimensional structure diagram of the driving assembly in the energy recovery mechanism of the present application; Figure 10 The front view structure diagram of the driving assembly in the energy recovery mechanism of the present application; Figure 11 The first internal structure diagram of the energy recovery mechanism of the present application; Figure 12 The enlarged structure diagram of the C part in the energy recovery mechanism of the present application; Figure 11 Figure 13 The second internal structure diagram of the energy recovery mechanism of the present application; Figure 14 The assembly state structure diagram of the driving assembly and the second gear of the present application; Figure 15 The sectional structure diagram of the energy recovery assembly of the present application; Figure 16 The enlarged structure diagram of the D part in the energy recovery assembly of the present application; Figure 15 Figure 17 The overall structure diagram of the first energy recovery assembly of the present application; Figure 18 The first sectional structure diagram of the first energy recovery assembly of the present application; Figure 19 The second sectional structure diagram of the first energy recovery assembly of the present application; Figure 20 The overall structure diagram of the flow control assembly of the present application; Figure 21 The sectional structure diagram of the flow control assembly of the present application.

[0021] ​​In the figure: 1, mobile support; 2, first tension roller; 3, second tension roller; 4, servo motor; 5, control box; 6, energy recovery mechanism; 61, bearing cylinder; 62, protective cover; 63, avoiding through slot; 64, first energy recovery assembly; 641, machine shell; 642, rotor; 643, first gear; 644, sliding sleeve; 645, permanent magnet; 646, first push-pull rod; 647, connecting rod; 648, screw; 649, second gear; 6410, annular heat dissipation pipe; 6411, flow control assembly; a1, shell; a2, circular plate; a3, through hole; a4, third gear; a5, straight rack; a6, support column; a7, first return pipe; a8, second return pipe; a9, first check valve; 6412, cooling liquid input pipe; 6413, second check valve; 65, second energy recovery assembly; 66, third energy recovery assembly; 67, annular pipe; 68, cooling liquid storage cylinder; 69, piston plate; 610, second push-pull rod; 611, circular plate; 612, protruding block; 613, spring; 615, driving block; 616, electric motor; 617, No. 1 arc-shaped block; 618, No. 1 arc-shaped rack; 619, No. 2 arc-shaped block; 620, No. 2 arc-shaped rack; 621, No. 3 arc-shaped block; 622, No. 3 arc-shaped rack; 7, transmission shaft; 8, fourth gear. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] The present application provides three technical solutions: an electric tension machine, specifically including the following embodiments: As Figures 1-8 The first embodiment is shown: an electric tension machine, comprising a mobile support 1, further comprising: The first tension roller 2 and the second tension roller 3 are both rotatably arranged on the two sides inside the mobile support 1 through the transmission shaft 7, and the side wall of the mobile support 1 is also fixedly provided with a servo motor 4 for driving the first tension roller 2 to rotate; the output end of the servo motor 4 is fixedly provided with a driving gear, and the outer wall of the first tension roller 2 is fixedly provided with a gear ring, and the driving gear and the gear ring are connected with each other; The energy recovery mechanism 6 is arranged on the outer wall of the mobile support 1 close to the second tension roller 3, which is used to cooperate with the first tension roller 2 to jointly adjust the tension of the second tension roller 3, and can recover the mechanical energy generated during braking or deceleration of the tension machine, convert it into electric energy and store it in the energy storage battery; The energy recovery mechanism 6 further comprises a bearing cylinder 61 and a protective cover 62 detachably arranged at one end of the bearing cylinder 61, a plurality of avoiding through grooves 63 are uniformly arranged on the outer wall of the protective cover 62, and the inside of the bearing cylinder 61 is uniformly provided with the first energy recovery assembly 64, the second energy recovery assembly 65 and the third energy recovery assembly 66 for mutual cooperation or independent operation to regulate the braking force of the second tension roller 3, the first energy recovery assembly 64, the second energy recovery assembly 65 and the third energy recovery assembly 66 are regulated by the driving assembly to regulate the braking force of the second tension roller 3, and the cooling liquid flow in the braking process is automatically increased or decreased according to the increase or decrease of the braking force.

[0024] As Figures 9-16 The second embodiment is shown, which is different from the first embodiment in that the transmission shaft 7 is fixedly arranged at one end of the bearing cylinder 61 and provided with the fourth gear 8 for simultaneously driving the first energy recovery assembly 64, the second energy recovery assembly 65 and the third energy recovery assembly 66 to operate, the first energy recovery assembly 64, the second energy recovery assembly 65 and the third energy recovery assembly 66 are simultaneously connected with the annular pipe 67, and the annular pipe 67 is connected with the cooling liquid storage cylinder 68 through a pipeline. The annular pipe 67 is fixedly arranged on the inner wall of the protective cover 62, and the driving assembly is rotationally arranged in the space between the bearing cylinder 61 and the protective cover 62; In the embodiment, the driving assembly comprises the electric motor 616 fixedly arranged on the outer wall of the protective cover 62, the output end of the electric motor 616 is rotationally penetrated through the bearing cylinder 61 and connected with the driving ring assembly through a connecting piece, the driving ring assembly comprises the first arc-shaped block 617, the second arc-shaped block 619 and the third arc-shaped block 621 connected with each other in sequence, which together form a complete closed loop structure, and the outer wall of the first arc-shaped block 617, the second arc-shaped block 619 and the third arc-shaped block 621 is fixedly arranged with the first arc-shaped rack 618, the second arc-shaped rack 620 and the third arc-shaped rack 622 respectively. The first arc-shaped rack 618, the second arc-shaped rack 620 and the third arc-shaped rack 622 are the same in structure, and in the process of meshing and disengaging between the first arc-shaped rack 618, the second arc-shaped rack 620 and the third arc-shaped rack 622 and the second gear 649, the projection of the permanent magnet 645 and the coil part of the rotor 642 at the corresponding position is just from no overlap to the projection of the permanent magnet 645 completely covering the rotor 642. The electric motor 616 is controlled by the control box 5, and each time it is started to rotate at a low speed and at a uniform speed with a preset degree, and the resistance value applied by the first energy recovery assembly 64, the second energy recovery assembly 65 and the third energy recovery assembly 66 to the second tension roller 3 is flexibly adjusted according to the cable tension information fed back by the tension sensor.

[0025] In the embodiment, the first arc-shaped block 617, the second arc-shaped block 619 and the third arc-shaped block 621 are of the same structure, and the arc-shaped sidewalls of the first arc-shaped block 617, the second arc-shaped block 619 and the third arc-shaped block 621 are equally divided into three regions, which are sequentially a first segment region, a second segment region and a third segment region, the first arc-shaped rack 618 is fixedly arranged in the first segment region of the first arc-shaped block 617, the second arc-shaped rack 620 is fixedly arranged in the second segment region of the second arc-shaped block 619, the third arc-shaped rack 622 is fixedly arranged in the third segment region of the third arc-shaped block 621, the two ends of the third arc-shaped rack 622 and the first arc-shaped rack 618 abut, and the first arc-shaped block 617, the second arc-shaped block 619 and the third arc-shaped block 621 rotate in a clockwise direction. In the initial state of the driving ring assembly, the second gear 649 in the first energy recovery assembly 64 and the first arc-shaped rack 618 are connected with each other in meshing, and the first arc-shaped rack 618 is located at the first end of the first arc-shaped rack 618, that is, the starting position of the first segment region. At this time, the second gears 649 in the second energy recovery assembly 65 and the third energy recovery assembly 66 are respectively located at the first ends of the first segment regions of the second arc-shaped block 619 and the third arc-shaped block 621. When the second gear 649 in the first energy recovery assembly 64 completely scans the first arc-shaped rack 618, the second gear 649 in the second energy recovery assembly 65 is just engaged with the second arc-shaped rack 620, and at this time, the second gear 649 in the third energy recovery assembly 66 is located at the first end of the second segment region of the third arc-shaped block 621. After the second gear 649 in the second energy recovery assembly 65 completely scans the second arc-shaped rack 620, the second gear 649 in the third energy recovery assembly 66 is just engaged with the third arc-shaped rack 622.

[0026] In the embodiment, the cooling liquid pumping assembly comprises a cooling liquid storage cylinder 68 fixedly arranged in the inside of the bearing cylinder 61, the inside of the cooling liquid storage cylinder 68 is slidingly provided with a piston plate 69, one end of the piston plate 69 is fixedly provided with a second push-pull rod 610, one end of the second push-pull rod 610 slidingly penetrates the cooling liquid storage cylinder 68 and is fixedly provided with a circular plate 611, the outer walls of the circular plate 611 away from the second push-pull rod 610 are fixedly provided with protrusions 612, the outer wall of the second push-pull rod 610 and between the piston plate 69 and the outer wall of the bearing cylinder 61 is slidingly provided with a spring 613, one side of the circular plate 611 and between the outer walls of the fourth gear 8 are fixedly provided with driving blocks 615, and the two driving blocks 615 and the two protrusions 612 are correspondingly arranged. The transmission shaft 7 and the cooling liquid storage cylinder 68 are connected through a pipeline, the input end of the pipeline is located on the side of the piston plate 69 away from the second push-pull rod 610, and the bearing cylinder 61 is fixedly arranged on the side wall of the moving support 1 through bolts and mounting frames.

[0027] As Figures 17-21The third embodiment is shown, which is different from the second embodiment in that the first, second and third energy recovery assemblies 64, 65 and 66 have the same structure. The first energy recovery assembly 64 comprises a casing 641 detachably arranged inside the bearing cylinder 61. A rotor 642 is rotatably arranged inside the casing 641 by a support. One end of the rotor 642 rotatably penetrates the casing 641 and is fixedly provided with a first gear 643 which is in meshing connection with the fourth gear 8. The inner wall of the casing 641 is fixedly provided with a sliding sleeve 644 on both sides. The inner part of each sliding sleeve 644 is slidably provided with a permanent magnet 645. The side wall of each permanent magnet 645 is fixedly provided with a first push-pull rod 646.

[0028] In the embodiment, one end of the two first push-pull rods 646 is fixedly provided with a connecting rod 647. A screw rod 648 is threadedly penetrated at the middle position of the connecting rod 647. The end of the screw rod 648 away from the first push-pull rod 646 is fixedly provided with a second gear 649. The inner wall of the casing 641 is further fixedly provided with an annular heat dissipation pipe 6410. The outer wall of the annular heat dissipation pipe 6410 is provided with a flow control assembly 6411 for discharging the internal coolant. The bottom of the annular heat dissipation pipe 6410 is further fixedly provided with a coolant input pipe 6412. The inner part of the coolant input pipe 6412 is fixedly provided with a second one-way valve 6413 for allowing the coolant to flow into the annular heat dissipation pipe 6410 only. The two permanent magnets 645 are oppositely arranged and can generate an induced current in cooperation with the rotating rotor 642. One end of the screw rod 648 is rotatably connected with the casing 641. The rotor 642 outputs the generated electric energy through the brush and the connecting wire and stores the electric energy in the energy storage battery.

[0029] In the embodiment, the flow control assembly 6411 comprises a shell a1. A circular plate a2 is rotatably arranged inside the shell a1. A through hole a3 is formed in the inner part of the circular plate a2. A rotating shaft is fixedly arranged at the center position of the side wall of the circular plate a2. The rotating shaft rotatably penetrates the shell a1 and is fixedly provided with a third gear a4. The bottom of the third gear a4 is in meshing connection with a straight rack a5. The straight rack a5 is fixedly arranged at the top of the connecting rod 647 through a support column a6. The outer wall of the shell a1 is fixedly provided with a first return pipe a7 and a second return pipe a8 which are in communication with the inner part of the shell a1. The inner part of the second return pipe a8 is fixedly provided with a first one-way valve a9 for allowing the coolant to flow out of the shell a1 only. The bottom end of the second return pipe a8 is connected with the annular pipe 67. One end of the coolant input pipe 6412 is in communication with the inner part of the coolant storage cylinder 68. The straight rack a5 can freely move in the avoiding through slot 63 at the corresponding position.

[0030] The application also provides a control system of the electric tensioner, which is used for the electric tensioner, and comprises a control box 5 and a tension sensor for acquiring tension information of a cable on the electric tensioner, and a position sensor is further arranged on the first energy recovery assembly 64; the tension information acquired by the tension sensor and the real-time position information acquired by the position sensor are transmitted to the control box 5, and the running state of the servo motor 4 is controlled through the control box 5; the position sensor is fixedly arranged on the side wall of the connecting rod 647 relative to the shell 641, and is used for measuring the distance between the connecting rod 647 and the shell 641 in real time. Since the initial distance between the connecting rod 647 and the shell 641 is a known value, that is, the initial position of the permanent magnet 645 is also a known value, the initial position of the permanent magnet 645 is the projection of the position of the coil of the rotor 642 relative to the shell 641 in the vertical direction and has no overlapping area, that is, in the initial state, no current is generated when the rotor 642 rotates. Based on the initial state, when the connecting rod 647 approaches the shell 641 by one centimeter, the length of the permanent magnet 645 that is partially overlapped with the coil of the rotor 642 increases by one centimeter, and when the connecting rod 647 moves by a preset distance relative to the shell 641, the permanent magnets 645 on both sides can just cover the coil part of the rotor 642.

[0031] In use, the cable is wound around the first tension roller 2 and the second tension roller 3 and is drawn out from the front of the first tension roller 2, and one end of the cable drawn out is connected with an external traction device.

[0032] When the electric tensioner works, the external traction device and the servo motor 4 are synchronously operated, and the speed at which the servo motor 4 drives the first tension roller 2 to release the cable is adapted to the speed at which the external traction device pulls the cable, that is, the cable always maintains a relatively stable tension value. In the process of releasing the cable, the second tension roller 3 is driven to rotate synchronously by the frictional force between the second tension roller 3 and the cable.

[0033] When the second tension roller 3 rotates, since the transmission shaft 7 and the second tension roller 3 are fixedly connected with each other, the transmission shaft 7 and the second tension roller 3 rotate synchronously. The transmission shaft 7 drives the fourth gear 8 to rotate at the same time, so that the rotors 642 in the first energy recovery assembly 64, the second energy recovery assembly 65 and the third energy recovery assembly 66 rotate synchronously.

[0034] When it is necessary to adjust the braking force of the second tension roller 3 or adjust the tension of the cable in cooperation with the first tension roller 2, the control box 5 can control the electric motor 616 to rotate clockwise at a predetermined speed for a specified time, and the output shaft of the electric motor 616 drives the first arc-shaped block 617, the second arc-shaped block 619 and the third arc-shaped rack 622 to rotate synchronously. The second gear 649 in the first energy recovery assembly 64 is first driven to rotate by the first arc-shaped rack 618, and since the connecting rod 647 and the screw rod 648 are connected by threads, when the screw rod 648 rotates, it synchronously drives the connecting rod 647 to move towards the shell 641. The first push-pull rod 646 on both sides of the connecting rod 647 simultaneously pushes the two permanent magnets 645 to slide along the inner wall of the corresponding sleeve 644, and the two permanent magnets 645 gradually have overlapping parts from the separated state of the rotor 642 coil part, the rotating rotor 642 quickly cuts the magnetic field formed by the two permanent magnets 645, and an induced current is generated in the rotor 642 coil, which is transmitted to the external converter through the brush on the rotor 642, and the current is converted and stored in the energy storage battery after conversion.

[0035] Since the rotor 642 rotates continuously to cut the magnetic induction lines, the rotation of the rotor 642 is resisted by the magnetic field, and as the relative area of the permanent magnet 645 and the rotor 642 coil increases, the part of the rotor 642 coil that cuts the magnetic induction lines gradually increases, so the resistance of the magnetic field gradually increases, and therefore more power input is required to drive the first gear 643 to rotate. At this time, the fourth gear 8 is subjected to a greater resistance, so that the rotation speed gradually decreases, and in this state, the tension sensor feedbacks the tension value of the cable at this time. In the case where the rotation speed of the first tension roller 2 does not change, the resistance to the rotation of the second tension roller 3 increases, so that the tension of the cable increases, and vice versa, when the resistance to the rotation of the second tension roller 3 decreases, the tension of the cable gradually decreases.

[0036] When the permanent magnets 645 in the first energy recovery assembly 64 are completely and partially coincided with the rotor 642 coil, the cable tension value is adjusted without changing the rotation speed of the first tension roller 2, and the electric motor 616 is controlled again by the control box 5 to rotate, the second gear 649 in the first energy recovery assembly 64 and the first arc-shaped rack 618 are changed from the engaged state to the separated state, at this time, the second gear 649 in the second energy recovery assembly 65 is just engaged with the second arc-shaped rack 620, the connecting rod 647 inside the second energy recovery assembly 65 is driven by the screw rod 648 to move close to the casing 641, the overlapping area of the two permanent magnets 645 and the rotor 642 coil in the second energy recovery assembly 65 gradually increases, when the rotor 642 cuts the magnetic induction lines in the second energy recovery assembly 65, the rotation resistance of the rotor 642 in the second energy recovery assembly 65 gradually increases, therefore, the resistance value can be further increased on the basis of the rotation resistance of the first energy recovery assembly 64 to the second tension roller 3 in this case, the tension value of the cable can be measured by the tension sensor, when the second gear 649 in the second energy recovery assembly 65 is separated from the second arc-shaped rack 620, the second gear 649 in the third energy recovery assembly 66 is just engaged with the third arc-shaped rack 622, since the regulation process of the permanent magnets 645 in the third energy recovery assembly 66 is the same as that of the permanent magnets 645 in the first energy recovery assembly 64 and the second energy recovery assembly 65, it will not be described here.

[0037] When the permanent magnets 645 in the first energy recovery assembly 64, the second energy recovery assembly 65 and the third energy recovery assembly 66 are all completely and partially coincided with the corresponding position of the rotor 642 coil, the rotation resistance of the second tension roller 3 reaches the maximum value, the electric motor 616 is controlled by the control box 5 to reverse, so as to drive the first arc-shaped block 617, the second arc-shaped block 619 and the third arc-shaped block 621 to return to the original position, at this time, the resistance of the first energy recovery assembly 64, the second energy recovery assembly 65 and the third energy recovery assembly 66 to the second tension roller 3 is marked as zero.

[0038] When the fourth gear 8 rotates, the two driving blocks 615 on the side wall of the fourth gear 8 synchronously push the two protrusions 612 at the corresponding positions to move, the circular plate 611 synchronously pushes the piston plate 69 to move away from the fourth gear 8, the cooling liquid in the cooling liquid storage cylinder 68 is delivered into the annular heat dissipation pipe 6410 through 614, exchanges heat with the heat exchange fins on the outer wall of the annular heat dissipation pipe 6410 and the air inside the machine shell 641, absorbs the heat inside the machine shell 641 to cool, when the piston plate 69 is reset under the action of the spring 613, the suction force generated by the piston plate 69 makes the cooling liquid in the annular heat dissipation pipe 6410 delivered into the annular pipe 67 through the first return pipe a7 and the shell a1, and the cooling liquid in the annular pipe 67 is returned to the cooling liquid storage cylinder 68 through the pipeline.

[0039] When the connecting rod 647 approaches the machine shell 641, that is, the area of the rotor 642 cutting the magnetic induction line increases, the current inside the rotor 642 increases due to the induced current, which increases the heat generated when the current passes through the coil. At the same time, the connecting rod 647 moves to synchronously push the spur gear a5 at the corresponding position to move, the spur gear a5 drives the third gear a4 to gradually rotate, the size of the opening of the through hole a3 in the circular plate a2 and the first return pipe a7 and the support column a6 gradually increases, when the connecting rod 647 moves to the limit position, the opening of the through hole a3 and the first return pipe a7 and the support column a6 reaches the maximum value, the amount of cooling liquid passing through the first return pipe a7 at this position per unit time reaches the maximum value, and the cooling operation of the rotor 642 is completed.

[0040] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, combinations, and variations can be made by those skilled in the art without departing from the principles and spirits of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electric tension machine, comprising a movable bracket, characterized in that: Also includes: The first tension roller and the second tension roller are respectively rotatably arranged on both sides of the movable bracket through a transmission shaft, and a servo motor for driving the first tension roller to rotate is also fixedly arranged on the side wall of the movable bracket; An energy recovery mechanism is provided on the outer wall of the movable bracket close to the second tension roller, and is used to cooperate with the first tension roller to adjust the tensioning force of the second tension roller. It is also capable of recovering the mechanical energy generated by the tension machine during braking or deceleration, converting it into electrical energy and storing it in the energy storage battery. The energy recovery mechanism also includes a carrying cylinder and a protective cover detachably provided at one end of the carrying cylinder, a plurality of avoidance slots are evenly provided on the outer wall of the protective cover, and a first energy recovery component, a second energy recovery component and a third energy recovery component are evenly provided inside the carrying cylinder for cooperating with each other or operating independently to regulate the magnitude of the braking force on the second tension roller, the first energy recovery component, the second energy recovery component and the third energy recovery component all regulate the magnitude of their own braking force on the second tension roller through the driving component, and at the same time, according to the increase or decrease of the braking force, the coolant flow rate during the braking process is automatically and synchronously increased or decreased through the coolant pumping component; The structures of the first energy recovery component, the second energy recovery component and the third energy recovery component are the same. The first energy recovery component includes a casing that is detachably arranged inside the supporting cylinder. A rotor is rotatably arranged inside the casing through a bracket. One end of the rotor rotates through the casing and is fixed with a first gear that is meshed with the fourth gear. Sleeves are fixed on both sides of the inner wall of the casing, and a permanent magnet is slidably arranged inside each sleeve. A first push-pull rod is fixed on the side walls of the two permanent magnets.

2. An electric tension machine according to claim 1, characterized in that: A fourth gear is fixedly provided at one end of the transmission shaft close to the supporting cylinder, which is used to simultaneously drive the first energy recovery component, the second energy recovery component and the third energy recovery component to operate. The first energy recovery component, the second energy recovery component and the third energy recovery component are simultaneously connected to the annular tube, and the annular tube is connected to the coolant storage cylinder through a pipeline.

3. The electric tension machine according to claim 1, characterized in that: The driving assembly includes an electric motor fixedly mounted on the outer wall of the protective cover, the output end of the electric motor rotates through the carrying cylinder and is connected to the driving ring assembly through a connecting piece, the driving ring assembly includes an arc block No. 1, an arc block No. 2 and an arc block No. 3 which are connected to each other end to end, together forming a complete closed loop structure, and an arc rack No. 1, an arc rack No. 2 and an arc rack No. 3 are fixedly mounted on the outer walls of the arc block No. 1, the arc block No. 2 and the arc block No. 3, respectively.

4. The electric tension machine according to claim 3, characterized in that: The structures of the arc block No. 1, the arc block No. 2 and the arc block No. 3 are the same, and the arc side walls of the arc block No. 1, the arc block No. 2 and the arc block No. 3 are equally divided into three areas, which are respectively the first section area, the second section area and the third section area. The arc rack No. 1 is fixedly set in the first section area of ​​the arc block No. 1, the arc rack No. 2 is fixedly set in the second section area of ​​the arc block No. 2, and the arc rack No. 3 is fixedly set in the third section area of ​​the arc block No.

3. The two ends of the arc rack No. 3 and the arc rack No. 1 are abutted against each other, and the arc block No. 1, the arc block No. 2 and the arc block No. 3 rotate in a clockwise direction.

5. The electric tension machine according to claim 2, characterized in that: The coolant pumping assembly includes a coolant storage cylinder fixedly arranged inside the supporting cylinder, a piston plate is sealingly and slidingly arranged inside the coolant storage cylinder, a second push-pull rod is fixedly arranged at one end of the piston plate, one end of the second push-pull rod slides through the coolant storage cylinder and is fixedly provided with a circular plate, protrusions are fixedly arranged on both sides of the outer wall of the circular plate away from the second push-pull rod, a spring is slidingly sleeved on the outer wall of the second push-pull rod and located between the piston plate and the outer wall of the supporting cylinder, a driving block is fixedly arranged on one side of the circular plate and on both sides of the outer wall of the fourth gear, and the positions of the two driving blocks and the two protrusions are arranged in a one-to-one correspondence.

6. The electric tension machine according to claim 1, characterized in that: A connecting rod is fixedly provided at one end of the two first push-pull rods, a screw is threaded through the middle position of the connecting rod, a second gear is fixedly provided at the end of the screw away from the first push-pull rod, an annular heat dissipation pipe is also fixedly provided on the inner wall of the casing, a flow control component for draining the coolant inside the annular heat dissipation pipe is provided on the outer wall of the annular heat dissipation pipe, a coolant input pipe is also fixedly provided at the bottom of the annular heat dissipation pipe, and a second one-way valve for only allowing coolant to flow into the annular heat dissipation pipe is fixedly provided inside the coolant input pipe.

7. The electric tension machine according to claim 6, characterized in that: The flow control assembly includes a shell, a circular plate is rotatably provided inside the shell, a through hole is opened inside the circular plate, a rotating shaft is fixedly provided at the center position of the side wall of the circular plate, the rotating shaft rotates through the shell and is fixedly provided with a third gear, a straight rack is engaged with the bottom of the third gear, and the straight rack is fixed to the top of the connecting rod through a support column, a first return pipe and a second return pipe connected to the interior of the shell are fixedly provided on both sides of the outer wall of the shell, and a first one-way valve that only allows coolant to flow out of the shell is fixedly provided inside the second return pipe.

8. A control system for an electric tension machine, characterized in that: The electric tension machine as described in any one of claims 1 to 7 comprises a control box and a tension sensor for obtaining cable tension information on the electric tension machine. The first energy recovery component is also provided with a position sensor. The tension information obtained by the tension sensor and the real-time position information obtained by the position sensor are sent to the control box, and the operating status of the servo motor is controlled by the control box.

Images