Galvanized steel strand twisting double-tension system

Abstract

The utility model relates to a galvanized steel strand twisting double-tension system which is installed on a cradle, two sides of the cradle are provided with jacking devices, each jacking device is rotatably connected with a tip, spools are clamped on the tips on the two sides in a matched mode, and a first tension control mechanism and a second tension control mechanism are arranged on the two sides of the cradle respectively. The tension control mechanism I comprises a hysteresis brake which is in chain transmission with the center chain on one side; the tension control mechanism II comprises a tension wheel, a tension belt, a roller unit, a translation rod and a stepping motor for driving the translation rod to linearly move; the tension wheel is arranged on the tip on the other side, and the tension belt is in rolling friction contact with the tension wheel through the roller unit; a translation rod is horizontally and slidably arranged on the cradle, an upper tension spring is arranged between the translation rod and one end of the tension band, and a lower tension spring is arranged between the other end of the tension band and the cradle. The tension belt and the tension wheel are in rolling contact friction, so that the tension belt is prevented from being easily worn, and meanwhile, the hysteresis brake is additionally arranged, so that higher-precision pay-off tension control is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a stranding machine technical field especially relates to a galvanized steel strand twisting double tension system. BACKGROUND

[0002] In the twisting process of steel wire rope production, tubular stranding machine equipment is adopted, and the stranding machine is a machine for twisting a plurality of metal wires into strands according to a certain lay length and lay direction. The pipe stranding machine is one of them. The pay-off device of the pipe stranding machine is provided with an I-shaped wheel in the cradle, and a clamping device with a center pin is arranged on both sides of the cradle. The center pin is driven by a cylinder to move linearly, and the center pin can rotate relative to the cylinder. One of the clamping devices on both sides is fixed, and the other is linearly operated, so that the center pin in the clamping device on both sides is inserted into the center hole of the I-shaped wheel, and the I-shaped wheel can be clamped together. In this way, the I-shaped wheel can be installed and fixed on the cradle, and the I-shaped wheel and the center pin can rotate together.

[0003] When the pay-off device is running: the cradle is rotating, and under the traction of the stranding machine take-up device, the steel strand on the I-shaped wheel is continuously released, and the I-shaped wheel is also continuously rotating. During the above pay-off process, the pay-off speed needs to be controlled, and then the pay-off tension needs to be controlled. Only by ensuring the appropriate pay-off tension can the best performance of the steel strand product be ensured.

[0004] The control of the pay-off tension is realized by adjusting the rotation speed of the I-shaped wheel. In the prior art, the pay-off tension is mostly ensured by mechanical friction. Specifically, a tension wheel is arranged on the center pin, the tension wheel, the center pin and the I-shaped wheel rotate together, and a tension belt is arranged on the cradle. The tension belt is wound around the side of the tension wheel, and the tension belt and the tension wheel are in contact and friction. The rotation speed of the I-shaped wheel is controlled by mechanical friction.

[0005] For example, the pay-off tension control device of the electroplating line disclosed in patent publication No. CN202208570U controls the pay-off tension by the friction cooperation between the tension wheel and the chain type damping mechanism. For example, the stainless steel wire rope stranding machine tension control device disclosed in CN212175325U controls the rotation speed of the I-shaped wheel by the friction resistance between the damping disc and the damping rope when the damping disc rotates, so as to control the pay-off tension.

[0006] The above friction cooperation mode of the tension wheel and the tension belt can basically control the pay-off tension, but for higher quality steel strand products, the friction cooperation tension control precision is not high, which requires a high precision control method. Moreover, the size of the pay-off tension by mechanical friction is difficult to control, and the size of the tension cannot be adjusted online. The mechanical friction method generates a large amount of heat and high friction loss, and the tension belt needs to be replaced regularly. SUMMARY

[0007] The utility model discloses in order to solve the problem of low precision of mechanical friction tension control mode and easy to wear, provide a galvanized steel strand twisting double tension system, the sliding friction of original tension wheel and tension belt is optimized as the rolling friction, reduce the wear of tension belt, increase the tension control means of hysteresis brake at the same time, realize higher precision tension control.

[0008] To realize above-mentioned purpose, the technical scheme that the utility model adopts is:

[0009] A galvanized steel strand twisting double tension system is installed on a cradle, the cradle has a clamping device on both sides, each clamping device is rotatably connected to a center, and the two centers on both sides are cooperatively clamped by a spool, the center and the spool rotate together, and the cradle is provided with a tension control mechanism one and a tension control mechanism two on both sides, which facilitates the convenience of spool pay-off tension control.

[0010] The tension control mechanism one comprises a hysteresis brake, and the hysteresis brake and the center on one side of the clamping device are in chain transmission; the tension control mechanism two comprises a tension wheel, a tension belt, a roller unit, a horizontally arranged translation rod and a stepping motor for driving the translation rod to reciprocatingly move linearly.

[0011] The tension wheel is coaxially arranged on the center of the other side of the clamping device, the tension belt is arranged around the periphery of the tension wheel, a plurality of roller units are uniformly arranged on the tension belt, the tension belt is in rolling friction contact with the tension wheel through the roller units, and the wear of the tension belt is reduced; the translation rod is horizontally slidably arranged on the cradle, an up-drawing spring is arranged between the translation rod and one end of the tension belt, and a down-drawing spring is arranged between the other end of the tension belt and the cradle.

[0012] Further, a small sprocket is arranged on the rotating shaft of the hysteresis brake, a large sprocket is arranged on the center of one side, and a chain is arranged between the small sprocket and the large sprocket, so that the connection between the hysteresis brake and the center is conveniently realized.

[0013] Further, the tension belt is arranged in a "C" shape on the circumferential surface of the tension wheel, the contact area of the tension belt and the tension wheel is increased, a ring groove is formed in the circumferential surface of the tension wheel, and the roller units on the tension belt are arranged in the ring groove to roll, so that the roller units are conveniently provided with operation space.

[0014] The roller unit comprises a mounting side plate, a fixed shaft, a bearing and a gear ring, two mounting side plates are symmetrically arranged on the tension belt, the fixed shaft is arranged between the two mounting side plates, the bearing is arranged on the fixed shaft, the gear ring is arranged on the bearing, the gear ring can rotate, and the gear ring is in meshing rotation with the ring groove.

[0015] Further, a guide plate is arranged on the cradle, the translation rod is arranged in sliding mode on the guide plate, rotation of the translation rod is facilitated, circumferential rotation of the translation rod is prevented, the translation rod is in the shape of a hexagonal prism, one end of the upper tension spring is hooked on the tension belt, and the other end of the upper tension spring is hooked on the translation rod.

[0016] A tension spring plate is further arranged on the cradle, one end of the lower tension spring is hooked on the tension belt, and the other end of the lower tension spring is hooked on the tension spring plate.

[0017] Further, the stepping motor is a hollow shaft stepping motor, a threaded rod is arranged at one end of the translation rod, the threaded rod extends into the hollow rotating shaft of the stepping motor and is in threaded connection with the rotating shaft.

[0018] Or the stepping motor is a through shaft type screw stepping motor, one end of the translation rod is fixedly connected with the screw rod of the stepping motor.

[0019] Through the above technical scheme, the cradle has the following beneficial effects:

[0020] On the basis that the spool and the center can rotate together, a hysteresis brake is arranged on one side of the cradle, the hysteresis brake and the center are in chain transmission, the rotating speed of the spool is changed by torque control of the hysteresis brake, and thus the wire laying tension can be accurately adjusted, and the product quality of the steel strand is reliably ensured.

[0021] The tension belt is arranged on the tension wheel, a plurality of roller units are arranged on the tension belt, the tension belt generates rolling friction with the tension wheel through the roller units, and the problem of easy wear of the tension belt is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a top view of the galvanized steel strand twisting double tension system.

[0023] Figure 2 is a tension control mechanism one schematic view of the galvanized steel strand twisting double tension system.

[0024] Figure 3 is a tension control mechanism two schematic view of the galvanized steel strand twisting double tension system.

[0025] Figure 4 is a roller unit arrangement schematic view of the galvanized steel strand twisting double tension system.

[0026] Figure 5 is a kind of galvanized steel strand twisting double tension system's roller unit and ring groove cooperation schematic view of the utility model.

[0027] In the drawing, the reference numerals are: 1 cradle, 2 clamping device, 3 center, 4 tension control mechanism one, 5 tension control mechanism two, 6 hysteresis brake, 7 horizontal plate, 8 small chain wheel, 9 large chain wheel, 10 chain, 11 tension wheel, 12 tension belt, 13 roller unit, 131 installation side plate, 132 fixed shaft, 133 bearing, 134 gear ring, 14 translation rod, 15 stepping motor, 16 rib plate, 17 ring groove, 18 tooth slot, 19 lower tension spring, 20 tension spring plate, 21 guide plate, 22 upper tension spring, 23 motor mounting plate, 24 threaded rod, 25 spool. DETAILED DESCRIPTION

[0028] The specific embodiments of the utility model will be described in detail below in combination with the drawings:

[0029] As Figures 1-5 shown, a kind of galvanized steel strand twisting double tension system is installed on cradle 1, and cradle 1 is provided with clamping device 2 on both sides, and the principle and structure of clamping device 2 are prior art, which are all using cylinder.Each clamping device 2 is rotatably connected with center 3, and center 3 can be linearly moved by clamping device 2, so that two centers 3 can be close to or away from each other, and center 3 can be rotated relative to clamping device 2.Both sides of center 3 are cooperatively clamped with spool 25, and center 3 and spool 25 can be rotated together after spool 25 is installed.

[0030] Tension control mechanism one 4 and tension control mechanism two 5 are respectively arranged on both sides of cradle 1, and tension control mechanism one 4 and tension control mechanism two 5 constitute the galvanized steel strand twisting double tension system.Tension control mechanism one 4 and tension control mechanism two 5 are all applied to center 3, so as to control the rotating speed of spool 25, and the wire laying tension of spool 25 is also controlled.

[0031] In the embodiment, tension control mechanism one 4 includes hysteresis brake 6, and hysteresis brake 6 and center 3 on one side of clamping device 2 are chain transmission, and the rotation of center 3 can be controlled by hysteresis brake 6, so as to control the rotation of spool 25.The clamping device 2 where the center 3 is located does not move, and then the center 3 does not produce axial movement, so as to ensure the reliability of chain transmission.

[0032] The hysteresis brake 6 is installed on the cradle 1, and specifically, a horizontal plate 7 is arranged on the cradle 1, and the hysteresis brake 6 is installed on the horizontal plate 7 to achieve installation and fixation of the hysteresis brake 6. A small chain wheel 8 is arranged on a rotating shaft of the hysteresis brake 6, a large chain wheel 9 is arranged on the one side of the top pin 3, and a chain 10 is arranged between the small chain wheel 8 and the large chain wheel 9, so as to connect the top pin 3 and the hysteresis brake 6, and the rotating torque of the spool 25 is controlled through the hysteresis brake 6.

[0033] In the embodiment, the second tension control mechanism 5 comprises a tension wheel 11, a tension belt 12, a roller unit 13, a horizontally arranged translation rod 14, and a stepping motor 15 for driving the translation rod 14 to reciprocatingly move linearly. The tension wheel 11 is coaxially arranged on the top pin 3 of the other side of the clamping device 2, and the top pin 3 and the tension wheel 11 rotate together. The top pin 3 on which the tension wheel 11 is arranged is controlled by the clamping device 2, and the top pin 3 is linearly movable. The tension belt 12 is arranged on the circumference of the tension wheel 11, and the tension belt 12 is arranged in a "C" shape on the circumference of the tension wheel 11.

[0034] Compared with the conventional sliding friction mode, a plurality of roller units 13 are uniformly arranged on the tension belt 12, the tension belt 12 is in rolling frictional contact with the tension wheel 11 through the roller units 13, and the rotation of the roller units 13 can reduce the friction coefficient of the tension belt 12 and the tension wheel 11.

[0035] The roller unit 13 comprises a mounting side plate 131, a fixed shaft 132, a bearing 133, and a gear ring 134. The tension belt 12 is a steel belt, two mounting side plates 131 are symmetrically arranged on the tension belt 12, a triangular rib plate 16 is arranged between each mounting side plate 131 and the tension belt 12, the number of the rib plates 16 is two, and the two rib plates 16 are arranged in an inverted "8" shape. The fixed shaft 132 is arranged between the two mounting side plates 131 in a penetrating manner, and the fixed shaft 132 is in interference fit with the mounting side plates 131. The bearing 133 is arranged on the fixed shaft 132 in a penetrating manner, and the bearing 133 is located between the two mounting side plates 131. The inner ring of the bearing 133 is in interference fit with the fixed shaft 132 to achieve installation and fixation. The outer ring of the bearing 133 is sleeved with the gear ring 134, and the gear ring 134 is also in interference fit with the bearing 133. The gear ring 134 can rotate by itself under the driving of the bearing 133.

[0036] In order to facilitate the installation of the roller unit 13, a ring groove 17 is formed on the circumference of the tension wheel 11, the ring groove 17 is arranged around the tension wheel 11, and the cross section of the ring groove 17 is in an inverted trapezoidal shape. The roller unit 13 on the tension belt 12 rolls in the ring groove 17, and the ring groove 17 provides a certain space for the placement of the roller unit 13. The gear ring 134 in the roller unit 13 is in meshing rotation with the ring groove 17, that is, a plurality of gear grooves 18 are uniformly formed on the bottom surface of the ring groove 17, and the gear ring 134 is in meshing rotation with the gear grooves 18.

[0037] The tension belt 12 needs to form certain constraint force to the tension wheel 11 to control the rotation of the spool 25, so the tension belt 12 needs to be tightened. Specifically, the other end of the tension belt 12 and the cradle 1 are provided with a downward spring 19, and a spring plate 20 is arranged on the cradle 1 during installation. One end of the downward spring 19 is hooked on the tension belt 12, and the other end of the downward spring 19 is hooked on the spring plate 20. The spring plate 20 and the end of the tension belt 12 are both provided with a round hole to facilitate the hooking of the downward spring 19.

[0038] On the basis of the position of the tension belt 12 being limited, a translation rod 14 is arranged horizontally sliding on the cradle 1, and the translation rod 14 is in the shape of a hexagonal prism. During installation, a guide plate 21 with a hexagonal hole is arranged on the cradle 1, and the translation rod 14 is slidingly arranged on the guide plate 21. The translation rod 14 is arranged on the guide plate 21, so that the translation rod 14 can only move horizontally and cannot rotate.

[0039] An upward spring 22 is arranged between the translation rod 14 and one end of the tension belt 12. The end of the translation rod 14 and the end of the tension belt 12 are both provided with a round hole, so that one end of the upward spring 22 is hooked on the tension belt 12 and the other end is hooked on the translation rod 14. On the basis of the position of the spring plate 20 being fixed, the horizontal position of the translation rod 14 can be adjusted, thereby changing the tension of the tension belt 12.

[0040] The adjustment of the position of the translation rod 14 is realized by an electric method, that is, a stepping motor 15 is used to control the horizontal movement of the translation rod 14. A motor mounting plate 23 is arranged on the cradle 1 to realize the installation and fixation of the stepping motor 15. Here, the stepping motor 15 is a hollow shaft stepping motor 15, the rotating shaft of which is hollow. A threaded rod 24 is arranged at one end of the translation rod 14, and the threaded rod 24 extends into the hollow rotating shaft of the stepping motor 15 and is threadedly connected with the rotating shaft.

[0041] Since the threaded rod 24 is threadedly connected with the rotating shaft of the stepping motor 15 and the translation rod 14 is slidingly connected with the guide plate 21, after the stepping motor 15 operates, the threaded rod 24 and the rotating shaft of the stepping motor 15 will produce axial relative movement, which can drive the translation rod 14 to move horizontally. By driving the stepping motor 15 in forward and reverse directions, the moving direction of the translation rod 14 is changed, thereby adjusting the tension of the tension belt 12. The tension belt 12 gives a certain pressure to the tension wheel 11, changes the rolling frictional resistance between the tension belt 12 and the tension wheel 11, and achieves the purpose of controlling the pay-off tension.

[0042] The stepping motor 15 can also be a through-shaft type screw stepping motor 15, which has a screw rod that penetrates the stepping motor 15, and the operation of the stepping motor 15 can control the axial linear motion of the screw rod. One end of the translation rod 14 is fixedly connected with the screw rod of the stepping motor 15, that is, the translation rod 14 can be directly connected with the screw rod of the stepping motor 15, so that the threaded rod 24 is no longer needed. By connecting the through-shaft type screw stepping motor 15 with the translation rod 14, the axial movement of the translation rod 14 can be controlled.

[0043] The principle of the utility model is that: the center 3 on one side does not produce axial movement, and the center 3 on the other side produces axial movement, so that the spool 25 can be clamped and fixed on the cradle 1 or disassembled from the cradle 1. During the process of paying off the steel strand on the spool 25, the magnetic hysteresis brake 6 generates a certain torque by being energized, and controls the rotation of the spool 25 under the action of chain transmission, so as to accurately change the size of the pay-off tension. At the same time, the tension of the tension belt 12 to the tension wheel 11 can be adjusted by the operation of the stepping motor 15, the rolling frictional resistance of the tension belt 12 to the tension wheel 11 is controlled, and the pay-off tension of the spool 25 can also be adjusted.

[0044] The utility model can effectively control the pay-off tension of the spool 25 through the magnetic hysteresis brake 6 and the stepping motor 15, so as to ensure the consistency of the steel strand tension and improve the quality of the steel strand. The power transmission supply of the stepping motor 15 and the magnetic hysteresis brake 6 is realized through the conductive slip ring, which is installed at the rotation center position of the end part of the cradle 1.

[0045] The above-mentioned embodiments are only preferred embodiments of the utility model, and do not limit the implementation range of the utility model, so that equivalent changes or modifications made according to the structure, features and principles described in the patent range of the utility model should be included in the patent range of the utility model.

Claims

1. A galvanized steel strand twisting double tension system, installed on a cradle (1), the cradle (1) having tightening devices (2) on both sides, each tightening device (2) having a rotatably connected tip (3), the tips (3) on both sides being fitted with I-beam wheels (25), the tips (3) and the I-beam wheels (25) rotating together, characterized in that, The cradle (1) is provided with a tension control mechanism one (4) and a tension control mechanism two (5) on both sides respectively; The tension control mechanism one (4) comprises a hysteresis brake (6), the hysteresis brake (6) and a top (3) on one side of the top pressing device (2) are chain driven; The tension control mechanism two (5) comprises a tension wheel (11), a tension belt (12), a roller unit (13), a horizontally arranged translation rod (14) and a stepping motor (15) for driving the translation rod (14) to reciprocate linearly; The tension wheel (11) is coaxially arranged on the top (3) of the other side of the top pressing device (2), the tension belt (12) is arranged around the side of the tension wheel (11), a plurality of roller units (13) are uniformly arranged on the tension belt (12), the tension belt (12) is in rolling friction contact with the tension wheel (11) through the roller units (13); The translation rod (14) is horizontally slidably arranged on the cradle (1), an upper tension spring (22) is arranged between the translation rod (14) and one end of the tension belt (12), and a lower tension spring (19) is arranged between the other end of the tension belt (12) and the cradle (1).

2. A galvanized steel strand laying double tension system according to claim 1, characterized in that, A small sprocket (8) is arranged on the rotating shaft of the hysteresis brake (6), a large sprocket (9) is arranged on the top (3) on one side, and a chain (10) is arranged between the small sprocket (8) and the large sprocket (9).

3. A galvanized steel strand laying double tension system according to claim 1, characterized in that, The tension belt (12) is arranged in a "C" shape on the circumferential surface of the tension wheel (11), the circumferential surface of the tension wheel (11) is provided with an annular groove (17), and the roller units (13) on the tension belt (12) are arranged in the annular groove (17) to roll; The roller unit (13) comprises a mounting side plate (131), a fixed shaft (132), a bearing (133) and a gear ring (134), two mounting side plates (131) are symmetrically arranged on the tension belt (12), the fixed shaft (132) is arranged between the two mounting side plates (131), the bearing (133) is arranged on the fixed shaft (132), the gear ring (134) is arranged on the bearing (133), and the gear ring (134) is engaged with the annular groove (17) to rotate.

4. A galvanized steel strand laying double tension system according to claim 1, characterized in that, A guide plate (21) is arranged on the cradle (1), the translation rod (14) is slidably arranged on the guide plate (21), the translation rod (14) is in the shape of a hexagonal prism, one end of the upper tension spring (22) is hooked on the tension belt (12), and the other end of the upper tension spring (22) is hooked on the translation rod (14); A tension spring plate (20) is further arranged on the cradle (1), one end of the lower tension spring (19) is hooked on the tension belt (12), and the other end of the lower tension spring (19) is hooked on the tension spring plate (20).

5. A galvanized steel strand twisting two tension system according to claim 1, characterized in that, The stepping motor (15) is a hollow shaft stepping motor (15), one end of the translation rod (14) is provided with a threaded rod (24), the threaded rod (24) extends into the hollow rotating shaft of the stepping motor (15) and is threadedly connected with the rotating shaft; Or the stepping motor (15) is a through shaft type screw stepping motor (15), one end of the translation rod (14) is fixedly connected with the screw rod of the stepping motor (15).

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