Large-tension cold-rolling coiling machine coiling block pull rod

Abstract

The invention relates to the technical field of cold rolling tension recoiling machines, and discloses a large-tension cold rolling recoiling machine winding drum pull rod which comprises a pull rod body, the front end of the pull rod body is fixedly connected with a connecting block, the end, away from the pull rod body, of the connecting block is in threaded connection with a threaded rod, and the end, away from the connecting block, of the pull rod body is fixedly connected with a threaded block. And a pressure detection device is arranged in the pull rod. Through the arrangement of the pressure sensor, the signal transmitter, the electric slip ring, the metal sheet, the detection probe, the supporting spring, the connecting shaft and the metal conductive sheet, the pressure of the pull rod in the using process can be detected in real time, and pressure data obtained through detection are transmitted to external monitoring equipment through the wireless transmission technology; equipment management personnel can conveniently maintain the pull rod according to detected pressure data, the pull rod is prevented from being damaged when bearing large tensile force for a long time, meanwhile, the service life of the pull rod is prolonged, and the production cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of cold rolling tension coilers, in particular to a reel pull rod of a high tension cold rolling coiler. Background Art

[0002] The cold rolling coiler drum tie rod is an important component of the coiler, used to support and transmit the coiled metal coil, such as steel coil. It is usually located at the core of the coiler, carrying and transmitting the coil to ensure the stability and safety of the coil during the coiling process.

[0003] The coiler is not only used to coil the strip, but also to generate tension on the strip of the unit to keep the production process stable. High tension coiling makes the strip roll tighter and neater. In the production process of cold rolling and cold rolling post-processing production lines, it is necessary to maintain the front tension and back tension of the production line. Relying on the front tension and back tension, the pressure of the strip on the production line on the roller can be reduced, and the warping of the strip can be reduced, which is beneficial to improve the surface quality of the strip and the production efficiency of the unit.

[0004] The pull rod is an important component of the coiler. The pull rod is pulled by a rotating hydraulic cylinder to achieve the expansion and contraction of the coiler drum. The pull rod of the coiler is pulled very frequently. Every time the coiler expands or contracts, the pull rod must be pulled once. Each pulling is subject to a large tensile force, so accidents of coiler pull rod breakage often occur. Therefore, the service life of the high-tension coiler pull rod has always been short, and it needs to be replaced frequently. In view of this, we propose a high-tension cold-rolled coiler drum pull rod. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides a high-tension cold rolling coiler reel pull rod, which solves the problem in the prior art that the pull rod is damaged when subjected to a large tensile force for a long time.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a large tension cold rolling coiler reel pull rod, comprising a pull rod, the front end of the pull rod is fixedly connected to a connecting block, the end of the connecting block away from the pull rod is threadedly connected to a threaded rod, the end of the pull rod away from the connecting block is fixedly connected to a threaded block, the rear end of the outer arc surface of the pull rod is provided with a flat surface, and a pressure detection device is arranged inside the pull rod;

[0007] The pressure detection device includes a pressure sensor, both front and rear ends of the pressure sensor are fixedly connected to a signal transmitter via a connecting shaft, one end of the signal transmitter away from the pressure sensor is rotatably connected to an electric slip ring, one end of the electric slip ring away from the signal transmitter is fixedly connected to a metal sheet, an outer arc surface of the pressure sensor is fixedly connected to a detection probe, a fixed end of the detection probe is fixedly connected to a support spring, and one end of the threaded rod close to the connecting block is fixedly connected to a metal conductive sheet.

[0008] Preferably, a through hole is provided on the inner surface of the pull rod, chamfers are provided at both the front and rear ends of the pull rod, a plurality of groups of cylindrical grooves are provided on the inner surface of the pull rod, and bevels are provided at the edges of the cylindrical grooves on the inner surface of the pull rod.

[0009] Preferably, an arc-shaped key groove is provided on the outer arc surface of the connecting block, and a through hole is provided at the center of the inner surface of the connecting block.

[0010] Preferably, a threaded groove is formed at one end of the connection block close to the threaded rod, the plane is configured as a rectangle as a whole, and the outer arc surface of the pressure sensor is fixedly connected to the pull rod.

[0011] Preferably, the outer arc surface of the signal transmitter is fixedly connected to the pull rod, the signal transmitter is electrically connected to the electric slip ring, and the outer arc surface of the electric slip ring is rotatably connected to the pull rod.

[0012] Preferably, the outer surface of the metal sheet is electrically connected to the metal conductive sheet, and the detection probe is a retractable structure.

[0013] Preferably, one end of the support spring away from the detection probe is fixedly connected to the pull rod, an annular groove is provided on the outer arc surface of the pull rod, and an edge of the annular groove on the outer arc surface of the pull rod is provided as a slope.

[0014] Preferably, the detection probes are provided in a plurality of groups, and the intervals between the plurality of groups of detection probes are the same, and the plurality of groups of detection probes are evenly distributed on both sides of the outer arc surface of the pressure sensor.

[0015] Preferably, the outer diameters of the pressure sensor, the signal transmitter and the electric slip ring are the same, and are the same as the inner diameter of the through hole on the inner arc surface of the pull rod.

[0016] Preferably, a plurality of groups of annular reinforcing ribs are fixedly connected to the outer arc surface of the pull rod, the edges of the reinforcing ribs are set as inclined surfaces, the intervals between the plurality of groups of reinforcing ribs are equal, and the thickness of the reinforcing ribs is 3cm-5cm.

[0017] Working principle: When using this device, it is necessary to keep the reel pull rod installed in the reel pyramid sleeve, the threaded block is connected to the coiler rotary expansion and contraction hydraulic cylinder, the sector block is installed on the pyramid sleeve, and the end is fixed by bolts. The pull rod pulls the pyramid sleeve to make the sector block move radially, thereby realizing the expansion and contraction of the coiler reel, and the coiling and unwinding of the steel coil on the coiler are completed by relying on the expansion and contraction of the reel.

[0018] At the same time, when the pull rod is used normally, its outer surface will be subjected to tensile force, causing the detection probe to be slightly displaced as a whole. At this time, the detection probe will convert its deformation degree into an electrical signal and transmit it to the pressure sensor. The pressure sensor converts the electrical signal detected at the detection probe into a digital signal and transmits it to the signal transmitter. At this time, the signal transmitter will transmit the received digital signal to the external monitoring device through wireless network technology, and use the pressure detection values ​​detected at different points outside the pressure sensor for equipment management personnel to monitor and optimize it. In addition, before using the pressure sensor, it is necessary to twist the threaded rod away from the connecting block. At this time, the battery can be placed inside the connecting block, and the front and rear ends are respectively in contact with the metal sheet and the metal conductive sheet, and the metal sheet and the metal conductive sheet are electrically connected to the pressure sensor through wires. Therefore, the pressure sensor can be powered by the battery to maintain long-term pressure detection.

[0019] The present invention provides a high tension cold rolling coiler reel pull rod, which has the following beneficial effects:

[0020] 1. The present invention can detect the pressure of the pull rod in real time during use by means of the pressure sensor, signal transmitter, electric slip ring, metal sheet, detection probe, support spring, connecting shaft and metal conductive sheet, and transmit the pressure data obtained by the detection to the external monitoring equipment through wireless transmission technology, so as to facilitate the equipment management personnel to maintain the pull rod according to the pressure data obtained by the detection, avoid the damage of the pull rod when it is subjected to large tensile force for a long time, and at the same time increase the service life of the pull rod and reduce the production cost.

[0021] 2. The present invention can reduce stress concentration at the tie rod and improve the tensile strength of the tie rod by arranging the tie rod, pressure detection device, connecting block, threaded rod, keyway, threaded block and plane. The specially designed tie rod body and tie rod shaft diameter transition method ensure the uniform transmission of tensile impact force and good coordination with the pyramid sleeve. The high-strength alloy material used for the entire tie rod effectively ensures its fatigue resistance, thereby achieving the purpose of eliminating the hidden danger of major accidents caused by fatigue fracture of the tie rod.

[0022] 3. The present invention can remove unnecessary materials on the outer surface of the tie rod by setting up the tie rod and reinforcing ribs to prevent them from becoming areas with excessive residual stress, and use reinforcing ribs to increase the rigidity of the structure. The width of the reinforcing ribs is 2-5 cm, so that uneven thickness will not be generated at the connection between the reinforcing ribs and the tie rods, and the weight is also reduced by 30% compared to the original. In addition, each inner corner is chamfered to avoid the risk of stress concentration at the joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0024] Figure 2 It is an enlarged schematic diagram of the end of the pull rod of the present invention;

[0025] Figure 3 It is a schematic diagram of the internal cross-section of the pull rod of the present invention;

[0026] Figure 4 It is a schematic diagram of a cross section of a pressure sensor of the present invention;

[0027] Figure 5 It is a schematic diagram of a signal transmitter of the present invention;

[0028] Figure 6 It is a schematic diagram of the cross section of the connecting block of the present invention.

[0029] Among them, 1. pull rod; 2. pressure detection device; 3. connecting block; 4. threaded rod; 5. keyway; 6. threaded block; 7. plane; 8. reinforcing rib; 201. pressure sensor; 202. signal transmitter; 203. electric slip ring; 204. metal sheet; 205. detection probe; 206. support spring; 207. connecting shaft; 208. metal conductive sheet. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Please see attached Figure 1 -Attached Figure 3 The embodiment of the present invention provides a large tension cold rolling coiler reel pull rod, comprising a pull rod 1, a connecting block 3 is fixedly connected to the front end of the pull rod 1, a threaded rod 4 is threadedly connected to the end of the connecting block 3 away from the pull rod 1, a threaded block 6 is fixedly connected to the end of the pull rod 1 away from the connecting block 3, a plane 7 is provided on the rear end of the outer arc surface of the pull rod 1, and a pressure detection device 2 is arranged inside the pull rod 1;

[0032] Please see attached Figure 3 -Attached Figure 6 The pressure detection device 2 includes a pressure sensor 201, and the front and rear ends of the pressure sensor 201 are fixedly connected to the signal transmitter 202 through a connecting shaft 207. The end of the signal transmitter 202 away from the pressure sensor 201 is rotatably connected to an electric slip ring 203, and the end of the electric slip ring 203 away from the signal transmitter 202 is fixedly connected to a metal sheet 204. A detection probe 205 is fixedly connected to the outer arc surface of the pressure sensor 201, and a support spring 206 is fixedly connected to the fixed end of the detection probe 205. The end of the threaded rod 4 close to the connecting block 3 is fixedly connected to a metal conductive sheet 208.

[0033] A through hole is provided on the inner surface of the pull rod 1, so that the pressure sensor 201, the signal transmitter 202, the detection probe 205 and the electric slip ring 203 can be accommodated therein. Chamfers are provided on the front and rear ends of the pull rod 1, so that the pull rod 1 and the pyramid sleeve can be smoothly assembled, interference during the assembly process can be avoided, and the assembly efficiency is improved. At the same time, the cross-sectional shape of the pull rod 1 is circular. This design enables the pull rod 1 to evenly distribute stress when subjected to tensile force, thereby improving the strength and stability of the pull rod 1. A plurality of groups of cylindrical grooves are provided on the inner surface of the pull rod 1, so that the detection probe 205 and the support spring 206 can be accommodated therein. An oblique angle is provided on the edge of the cylindrical groove on the inner surface of the pull rod 1, so that the angle of the internal corner of the pull rod 1 can be reduced, thereby reducing the stress concentration phenomenon inside the pull rod 1, thereby increasing the service life of the main body of the pull rod 1. An arc-shaped keyway 5 is provided on the outer arc surface of the connecting block 3, so that it is convenient for an external tool to rotate the connecting block 3 through the keyway 5, thereby realizing the threaded rod 4 and the connecting The quick installation and disassembly between the blocks 3 improves the work efficiency. A through hole is provided at the center of the inner surface of the connecting block 3, so that the metal sheet 204, the metal conductive sheet 208 and the subsequent battery can be placed therein, and the battery can be used to power the pressure sensor 201 and the signal transmitter 202. A threaded groove is provided at one end of the connecting block 3 close to the threaded rod 4, so that the threaded rod 4 can form a threaded connection with the connecting block 3, and the length of the internal threaded groove of the connecting block 3 is limited. Therefore, during the torsion process, it is necessary to ensure that the outer surface thread of the threaded rod 4 is in full contact with the connecting block 3. The plane 7 is set as a rectangle as a whole, so it can provide sufficient contact area to ensure the stability of the pull rod 1 during assembly, avoiding equipment failure or safety hazards caused by unstable assembly. The rectangular shape is set at the plane 7, which can increase the contact area between the pull rod 1 and the pyramid sleeve, making the pull rod 1 more stable when subjected to tensile force, thereby improving the stability and safety of the entire winder. The outer arc surface of the pressure sensor 201 is fixedly connected to the pull rod 1.

[0034] The outer arc surface of the signal transmitter 202 is fixedly connected to the pull rod 1, and the signal transmitter 202 is electrically connected to the electric slip ring 203, so that the signal transmitter 202 can be powered and signal transmission can be achieved. The outer arc surface of the electric slip ring 203 is rotationally connected to the pull rod 1, and the outer surface of the metal sheet 204 is electrically connected to the metal conductive sheet 208, so that the pressure sensor 201 and the signal transmitter 202 can be powered, thereby ensuring that the signal transmitter 202 can work normally when receiving the detection signal.

[0035] Please see attached Figure 4 The detection probe 205 is a retractable structure. Therefore, when the pull rod 1 is subjected to external force, the position of the detection probe 205 can be automatically adjusted so that it can always fit on the inner wall of the pull rod 1, thereby ensuring accurate detection of the pressure on the pull rod 1. The end of the support spring 206 away from the detection probe 205 is fixedly connected to the pull rod 1, so it can play a supporting role for the detection probe 205, ensuring that the detection probe 205 can be flexibly retracted and extended when subjected to external force, and always keep close contact with the inner wall of the pull rod 1, thereby improving the accuracy and reliability of detection. A circular ring groove is provided on the outer arc surface of the pull rod 1, so it can avoid it from becoming an area with excessive residual stress. The edge of the circular ring groove on the outer arc surface of the pull rod 1 is set as an inclined surface, so it can reduce the stress concentration phenomenon on the outer surface of the pull rod 1, thereby improving the fatigue resistance and service life of the pull rod 1. There are multiple groups of detection probes 205, and the spacing between the multiple groups of detection probes 205 is the same. Therefore, during the detection process, the data terminal will receive the pressure at various points inside the pull rod 1. The force bearing condition data is obtained, and a line graph is generated according to the detection data. When the internal part of the pull rod 1 is subjected to a large pressure, the corresponding part in the line graph will be displayed as a peak state, and when the internal part of the pull rod 1 is subjected to a small pressure, the corresponding part in the line graph will be displayed as a trough state, so that the staff can make an intuitive judgment on the pressure situation of the internal part of the pull rod 1 according to the line graph, thereby improving the accuracy of the judgment. Multiple groups of detection probes 205 are evenly distributed on both sides of the outer arc surface of the pressure sensor 201. The outer diameters of the pressure sensor 201, the signal transmitter 202 and the electric slip ring 203 are all the same, and are the same as the inner diameter of the through hole on the inner arc surface of the pull rod 1. Therefore, the stability of the pressure detection device 2 installed inside the pull rod 1 can be ensured, and shaking or falling off during the use of the pull rod 1 can be avoided, thereby ensuring the accuracy and reliability of the pressure detection device 2 in detecting the internal pressure of the pull rod 1. At the same time, this design can also reduce the occupation of the internal space of the pull rod 1, making the structure of the pull rod 1 more compact and improving the use efficiency of the entire coiler.

[0036] Please see attached Figure 1-2, multiple groups of circular reinforcing ribs 8 are fixedly connected to the outer arc surface of the tie rod 1, and the edges of the reinforcing ribs 8 are set as inclined planes. The intervals between multiple groups of reinforcing ribs 8 are equal, so the overall strength of the tie rod 1 can be improved, making it less likely to deform or break when subjected to tensile force, thereby improving the service life and safety of the tie rod 1. At the same time, the design of the reinforcing ribs 8 can also reduce the stress concentration phenomenon on the outer surface of the tie rod 1 and reduce the risk of fatigue damage to the tie rod 1 during use. In addition, the edges of the reinforcing ribs 8 are set as inclined planes, which can reduce the sharpness of the outer surface of the tie rod 1 and reduce possible scratches or collision damage during assembly or use, thereby improving the safety of the entire coiler. The setting of multiple groups of reinforcing ribs 8 can also improve the rigidity of the tie rod 1, so that it can maintain a stable shape and size when subjected to external force, avoiding equipment failure or safety hazards caused by deformation of the tie rod 1. The thickness of the reinforcing ribs 8 is 3cm-5cm.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high tension cold rolling coiler reel pull rod, comprising a pull rod (1), characterized in that: The front end of the pull rod (1) is fixedly connected to a connecting block (3), the end of the connecting block (3) away from the pull rod (1) is threadedly connected to a threaded rod (4), the end of the pull rod (1) away from the connecting block (3) is fixedly connected to a threaded block (6), the rear end of the outer arc surface of the pull rod (1) is provided with a plane (7), and a pressure detection device (2) is arranged inside the pull rod (1); the pressure detection device (2) comprises a pressure sensor (201), and the front and rear ends of the pressure sensor (201) are fixedly connected to a signal sensor via a connecting shaft (207). A transmitter (202), one end of the signal transmitter (202) away from the pressure sensor (201) is rotatably connected to an electric slip ring (203), one end of the electric slip ring (203) away from the signal transmitter (202) is fixedly connected to a metal sheet (204), an outer arc surface of the pressure sensor (201) is fixedly connected to a detection probe (205), a fixed end of the detection probe (205) is fixedly connected to a support spring (206), and one end of the threaded rod (4) close to the connection block (3) is fixedly connected to a metal conductive sheet (208).

2. The high tension cold rolling coiler reel pull rod according to claim 1, characterized in that: The inner surface of the pull rod (1) is provided with a through hole, the front and rear ends of the pull rod (1) are provided with chamfers, the inner surface of the pull rod (1) is provided with multiple groups of cylindrical grooves, and the edges of the cylindrical grooves on the inner surface of the pull rod (1) are provided with bevels.

3. The high tension cold rolling coiler reel pull rod according to claim 1, characterized in that: An arc-shaped key groove (5) is provided on the outer arc surface of the connection block (3), and a penetrating through hole is provided at the center of the inner surface of the connection block (3).

4. The high tension cold rolling coiler reel pull rod according to claim 1, characterized in that: A threaded groove is formed at one end of the connection block (3) close to the threaded rod (4); the plane (7) is configured as a rectangle as a whole; and the outer arc surface of the pressure sensor (201) is fixedly connected to the pull rod (1).

5. The high tension cold rolling coiler reel pull rod according to claim 1, characterized in that: The outer arc surface of the signal transmitter (202) is fixedly connected to the pull rod (1), the signal transmitter (202) is electrically connected to the electric slip ring (203), and the outer arc surface of the electric slip ring (203) is rotatably connected to the pull rod (1).

6. The high tension cold rolling coiler reel pull rod according to claim 1, characterized in that: The outer surface of the metal sheet (204) is electrically connected to the metal conductive sheet (208), and the detection probe (205) is a retractable structure.

7. The high tension cold rolling coiler reel pull rod according to claim 1, characterized in that: One end of the support spring (206) away from the detection probe (205) is fixedly connected to the pull rod (1), and a circular groove is provided on the outer arc surface of the pull rod (1), and the edge of the circular groove on the outer arc surface of the pull rod (1) is set as a slope.

8. The high tension cold rolling coiler reel pull rod according to claim 1, characterized in that: The detection probes (205) are arranged in multiple groups, and the intervals between the multiple groups of detection probes (205) are the same. The multiple groups of detection probes (205) are evenly distributed on both sides of the outer arc surface of the pressure sensor (201).

9. The high tension cold rolling coiler reel pull rod according to claim 1, characterized in that: The outer diameters of the pressure sensor (201), the signal transmitter (202) and the electric slip ring (203) are all the same, and are also the same as the inner diameter of the inner arc surface through hole of the pull rod (1).

10. The high tension cold rolling coiler reel pull rod according to claim 1, characterized in that: A plurality of groups of annular reinforcing ribs (8) are fixedly connected to the outer arc surface of the pull rod (1), the edges of the reinforcing ribs (8) are arranged as inclined surfaces, the intervals between the plurality of groups of reinforcing ribs (8) are equal, and the thickness of the reinforcing ribs (8) is 3 cm-5 cm.

Images