A short stress rolling mill tie rod balancing structure and installation method

Abstract

The invention relates to the technical field of short stress rolling mills, and in particular to a short stress rolling mill tie rod balancing structure and an installation method, comprising a bearing, symmetrically distributed tie rods, end covers, copper nuts, spherical pads and ring bodies are arranged on both sides of the bearing, the copper nuts, spherical pads and ring bodies are respectively arranged inside the end covers, a cover plate is arranged on one side of the end cover, and a roller system balancing system is arranged between the two cover plates; the roller system balancing system is an elastic damper, and the elastic damper consists of an elastic damping base, an elastic damping body, a top cover and a piston rod body, the piston rod body and the top cover are fixedly connected, and one end of the piston rod body penetrates into the elastic damping body; through an amplitude control system, the amplitude of the rolling mill can be monitored, when the piston rod body moves a distance greater than the amplitude sensing height along the axial direction, the top cover contacts with a pressure sensor to generate an electrical signal and send it to a system terminal, and the system terminal sends an alarm to remind staff that the current short stress rolling mill is unbalanced, and timely repair and check the situation.

Description

Technical Field

[0001] The invention relates to the technical field of short stress rolling mills, and in particular to a short stress rolling mill tie rod balancing structure and an installation method. Background Art

[0002] With the development of the steel industry and the improvement of users' requirements for steel quality, rolling mills have higher and higher requirements for rolling mills. Short stress line rolling mills have high rigidity, high product precision, light equipment weight, and simple operation. In order to achieve the goal of high production, high quality and low consumption, modern small bar, wire and narrow strip steel rolling workshops generally use high rigidity short stress line rolling mills. This type of machine has become the mainstream model configured by steel companies around the world with its advantages of high frame rigidity, high product precision, light equipment weight, symmetrical roll gap adjustment, simple operation, reliable work, and low investment.

[0003] The short stress line mill is composed of a frame, rollers, transmission device, adjustment device and lubrication system, and each part works together to realize the rolling process. The frame provides a stable foundation, the rollers complete the rolling task, the transmission device transmits power, the adjustment device ensures the rolling accuracy, and the lubrication system reduces wear. Among them, the transmission device is the power source of the short stress line mill. It transmits the power of the motor to the rollers through equipment such as reducers and couplings, and drives the rollers to rotate. During the power transmission process, the main function of the pull rod device is to transmit the power of the pressing device to the copper nut, which is installed in the bearing seat, and then drives the bearing seat to rise and fall, and finally realizes the adjustment of the roller gap.

[0004] The tie rod and copper nut are the main working parts of the rolling mill under stress. The condition of this part of the equipment will directly affect the product quality and the control of the production process. The rolling mill drives the upper and lower boxes to move symmetrically by rotating the copper nut installed on the tie rod, thereby realizing the symmetrical adjustment of the rolling roll gap. The biggest advantage of this adjustment method is that the rolling line is stable and unchanged, which can avoid rolling and quality accidents caused by the misalignment of the rolling line and the center line of the hole type, greatly reduce the dependence on the technical level of the rolling adjustment workers, and simplify the rolling process. Thereby achieving the purpose of reducing rolling accidents and improving product accuracy. The gap between the copper nut, pressure ring, ring and the entire box installed on the tie rod and the elastic deformation generated when the tie rod is stressed are the main reasons for the "bounce" of the rolling mill. Eliminating "bounce" is the main measure to improve rolling stability, and it is also an important means to improve the utilization rate of the rolling groove and product quality. Eliminating "bounce" is mostly achieved through disc springs, hydraulics, and damping bodies. "Bounce" is an important indicator for evaluating the working performance of short stress line rolling mills.

[0005] The balancing mechanism of the traditional short stress rolling mill is a hydraulic balancing device, which is generally an integrated plunger cavity and bearing seat, with the advantages of compact equipment, stable operation, and the ability to operate the press screw and the upper roller bearing seat separately in the press device. However, in harsh rolling environments, after long-term use of the hydraulic balancing device, due to wear, jamming and other problems, the plunger cavity is prone to become larger, the surface finish is reduced, and leakage occurs.

[0006] In the current existing technology, the short stress rolling mill has modified the hydraulic balancing device and adopted an elastic damping body balancing device to balance the rollers. Compared with the traditional hydraulic balancing device, it has the advantages of simple structure and low cost. However, the use of the elastic damping body balancing device will cause the installation of the rollers of the short stress rolling mill to be inconvenient during the roller changing process, and the elastic damping body balancing device is prone to jamming during the disassembly process after long-term use.

[0007] The purpose of the invention of this application is to solve the problem that the elastic damping body balancing device causes inconvenience in the installation of rollers during the roll changing process of the short stress rolling mill, and the elastic damping body balancing device is prone to jamming during the disassembly process after long-term use. Summary of the invention

[0008] In view of the above-mentioned shortcomings of the prior art, the present invention provides a short stress rolling mill tie rod balancing structure and an installation method, which can effectively solve the existing problems.

[0009] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0010] The present invention provides a short stress rolling mill tie rod balancing structure, comprising a bearing, tie rods, end covers, copper nuts, spherical pads and ring bodies symmetrically distributed are arranged on both sides of the bearing, the copper nuts, spherical pads and ring bodies are respectively arranged inside the end covers, a cover plate is arranged on one side of the end covers, and a roller system balancing system is arranged between the two cover plates; the roller system balancing system is an elastic damper; the elastic damper consists of an elastic damping base, an elastic damping body, a top cover and a piston rod body, the piston rod body and the top cover are fixedly connected, one end of the piston rod body penetrates into the elastic damping body, the bottom of the elastic damping body is fixedly connected to the elastic damping base, the elastic damping base and the top cover are respectively placed inside the cover plate of the end cover; an amplitude control system is arranged on the elastic damping body, The amplitude control system includes a supporting connecting plate that can move axially along the piston rod body and a pressure sensor fixed on the supporting connecting plate. A circular hole is processed in the middle of the supporting connecting plate. The piston rod body passes through the circular hole of the supporting connecting plate and slides on the inner wall of the circular hole. The height difference between the top cover and the supporting connecting plate is the amplitude sensing height; a roller changing adjustment system is arranged on the elastic damping body, which is used to adjust the distance between the top cover and the elastic damping body; a sealing system is arranged on the elastic damping body, and the sealing system includes an integral sliding sleeve fixed on the top cover, the bottom of the integral sliding sleeve is slidably connected to the outer wall of the integral sliding sleeve, and a dust ring is arranged at the bottom of the integral sliding sleeve. The integral sliding sleeve, the dust ring and the elastic damping base are combined to form a sealed space inside.

[0011] Furthermore, the diameter of the top cover is larger than the diameter of the circular hole of the supporting connecting plate; when the piston rod body moves axially a distance less than the amplitude sensing height, the top cover does not contact the pressure sensor and no electrical signal is generated; when the piston rod body moves axially a distance greater than the amplitude sensing height, the top cover contacts the pressure sensor to generate an electrical signal and send it to the system terminal.

[0012] Furthermore, an elastic telescopic column is fixedly connected to the outer wall of the bottom end of the supporting link plate, and a moving mechanism is provided at one end of the elastic telescopic column for driving the supporting link plate to move along the axial direction of the piston rod body.

[0013] Furthermore, the moving mechanism includes sliding grooves processed on both sides of the elastic damping body, a moving slider is slidably connected inside the sliding groove, and the top of the moving slider is fixedly connected to the bottom end of the elastic telescopic column; the same limiting connecting ring is fixedly connected between the two moving sliders, a fixing groove is processed on one side of the elastic damping body, and a through hole is processed on the side of the limiting connecting ring facing the fixing groove, and the through hole of the limiting connecting ring is threadedly connected to a fixing bolt, and the fixing bolt is used to pass through the through hole of the limiting connecting ring and contact the fixing groove to form a fixed relationship.

[0014] Furthermore, the moving mechanism includes electric guide rails processed on both sides of the elastic damping body, and the top end of the electric sliding block on the electric guide rail is fixedly connected to the bottom end of the elastic telescopic column.

[0015] Furthermore, the roller changing and adjusting system comprises a first rod body and a second rod body, the top end of the first rod body is fixedly connected to the top cover, and the second rod body is connected to the elastic damping body.

[0016] Furthermore, the first rod body and the second rod body are slidably connected so that the first rod body and the second rod body move away from or approach each other; when the first rod body and the second rod body move away from each other, the elastic damping body and the top cover move away from each other; when the first rod body and the second rod body move toward each other, the elastic damping body and the top cover move toward each other; a locking hole is processed on the second rod body, and a locking bolt is threadedly provided in the locking hole of the second rod body, and the locking bolt is used to form a fixed or loose relationship between the first rod body and the second rod body.

[0017] Furthermore, the first rod body and the second rod body are fixedly connected, and the first rod body is an electric push rod for adjusting the height of the top cover.

[0018] Furthermore, a box door is provided on one side of the integral sliding sleeve.

[0019] A method for installing a short stress rolling mill tie rod balancing structure, comprising:

[0020] S1: The distance between the top cover and the elastic damping body is adjusted by operating the roller changing adjustment system so that the top cover and the elastic damping body are close to each other, and then the bottom of the elastic damping base is first placed in the cover plate of the bottom end cover, and then the roller changing adjustment system is operated again to adjust the distance between the top cover and the elastic damping body so that the top cover and the elastic damping body are away from each other until the top cover is located in the cover plate of the upper end cover;

[0021] S2: The height difference between the supporting connecting plate and the top cover is adjusted by operating the amplitude control system to determine the amplitude sensing height;

[0022] S3: When it is necessary to change the roll, the distance between the top cover and the elastic damping body is adjusted by operating the roll changing adjustment system so that the top cover and the elastic damping body are close to each other. At this time, the staff can load the roll into the rolling mill, and then operate the roll changing adjustment system again to adjust the distance between the top cover and the elastic damping body so that the top cover and the elastic damping body are away from each other for reset.

[0023] Beneficial Effects

[0024] Compared with the known public technology, the technical solution provided by the present invention has the following beneficial effects:

[0025] The amplitude of the rolling mill can be monitored through the amplitude control system. When the piston rod moves axially for a distance greater than the amplitude sensing height, the top cover contacts the pressure sensor to generate an electrical signal and sends it to the system terminal. The system terminal then issues an alarm to remind staff that the short stress rolling mill is out of balance and that they should perform repairs and check the situation in a timely manner.

[0026] The elastic damping body and the top cover are brought close to each other by the roll changing adjustment system. The elastic damping body and the top cover are brought close to each other so that the rolls can be easily loaded into the rolling mill, thereby avoiding compression of the entire piston rod body. This can be achieved by only shortening a portion of the piston rod body, thereby improving the practicality of the device.

[0027] The integrated structure of the integral sleeve of the sealing system can prevent impurities in the harsh external environment from entering the elastic damping body. The occurrence of jamming can be avoided by regularly injecting lubricating oil into the integral sleeve, while also extending the service life of the elastic damping body. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 It is an overall schematic diagram of a pull rod balancing mechanism in the prior art;

[0030] Figure 2 It is a schematic structural diagram of a cross section of a pull rod balancing mechanism in the prior art;

[0031] Figure 3 It is a structural schematic diagram of the amplitude control system of the present invention;

[0032] Figure 4 It is a schematic diagram of the structure of the explosion of the amplitude control system of the present invention;

[0033] Figure 5 It is a structural schematic diagram of the roller changing adjustment system of the present invention;

[0034] Figure 6 It is a schematic structural diagram of the roll changing and adjusting system of the present invention;

[0035] Figure 7 It is a structural schematic diagram of the combination of the amplitude control system and the roll changing adjustment system of the present invention;

[0036] Figure 8 It is a schematic diagram of the structure of the amplitude control system and the roller changing adjustment system combined and enlarged in the present invention;

[0037] Fig. 9 It is a structural schematic diagram of the sealing system of the present invention;

[0038] Fig.10 It is a schematic diagram of the structure of the explosion of the sealing system of the present invention;

[0039] Fig.11 It is a structural schematic diagram of the combination of the amplitude control system, the roller changing adjustment system and the sealing system of the present invention;

[0040] Fig.12 It is a schematic diagram of the explosion structure of the amplitude control system, the roller changing adjustment system and the sealing system of the present invention.

[0041] Reference numerals

[0042] 100-tie rod; 101-end cover; 102-copper nut; 103-spherical pad; 104-ring body; 105-bearing;

[0043] 200-roller balancing system; 201-piston rod body; 202-elastic damping body; 203-elastic damping base; 204-top cover; 205-slideway; 206-fixing groove; 210-amplitude control system; 211-limiting connecting ring; 212-fixing bolt; 213-moving slider; 214-elastic telescopic column; 215-support connecting plate; 216-pressure sensor; 220-roller changing adjustment system; 221-first rod body; 222-second rod body; 223-locking bolt; 230-sealing system; 231-integral sliding sleeve; 232-dustproof ring; 233-box door. DETAILED DESCRIPTION

[0044] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0045] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0046] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0047] It should be noted that the modifications of "one" and "plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0048] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0049] The present invention will be further described below in conjunction with the embodiments.

[0050] Example:

[0051] A short stress rolling mill tie rod balance structure, such as Figure 1-2 As shown, in the prior art, a bearing 105 is included, and a tie rod 100, an end cover 101, a copper nut 102, a spherical pad 103 and a ring body 104 are symmetrically arranged on both sides of the bearing 105. The copper nut 102, the spherical pad 103 and the ring body 104 are arranged inside the end cover 101 respectively. The tie rod 100 bears the rolling force of the entire short stress rolling mill, and the rolling force is transmitted to the bearing 105 through the roller. The bearing 105 also transmits the rolling force to the copper nut 102, and the copper nut directly transmits it to the tie rod 100. 0 is designed symmetrically up and down. The tie rod will be subjected to a pair of rolling forces of equal magnitude and opposite direction, and finally the rolling forces are absorbed by the tie rod 100; a spherical pad 103 is arranged between the tie rod 100 and the bearing 105 to ensure that the deformation of the bearing 105 during the rolling process can adapt to each other, avoid stress concentration on the edge, and extend the life of the bearing 105; a spline or double key is arranged on the top of the tie rod 100, which is responsible for transmitting the power of the pressing device and driving the tie rod 100 to rotate; the trapezoidal threads at the upper and lower ends of the tie rod 100 cooperate with the copper nut 102;

[0052] A cover plate is provided on one side of the end cover 101, and a roll balancing system 200 is provided between the two cover plates. In the prior art, the roll balancing system 200 is generally arranged inside the end cover 101. Being arranged inside the end cover 101 will cause the staff to be unable to check the working condition of the roll balancing system 200 in time, and the roll balancing system 200 can only be inspected and repaired when the short stress rolling mill has a "bouncing" phenomenon during operation. The roll balancing system 200 cannot be checked and predicted in advance for damage. Therefore, this scheme adopts the method of externalizing the roll balancing system 200 to facilitate maintenance by the staff. The roll balancing system 200 adopts an elastic damper, which is composed of an elastic damping base 203, an elastic damping body 202, a top cover 204 and a piston rod body 201. The piston rod body 201 and the top cover 204 are connected to the roller balancing system 200. The cover 204 is fixedly connected, one end of the piston rod body 201 is deeply inserted into the elastic damping body 202, the bottom of the elastic damping body 202 is fixedly connected to the elastic damping base 203, and the elastic damping base 203 and the top cover 204 are respectively placed inside the cover plate of the end cover 101. The elastic damper has the following outstanding characteristics: 1. Viscosity; the colloid damping body can generate extremely strong viscous friction, absorb the huge energy generated by the external force when the piston moves, and has good shock absorption and buffering performance; 2. Compressibility; when the elastic damping body is subjected to a large external force, its volume shrinks, and the contracted part is similar to a liquid. This characteristic has better performance than a spring; in addition, the elastic damping body also has good thermal stability, special chemical inertness, and is not easy to age. These characteristics create conditions for using elastic colloids under poor environmental conditions;

[0053] In some solutions, in order to make the roller balancing system 200 have an amplitude sensing function, when the amplitude is too large, the staff can be notified in time to perform maintenance, such as Figure 3-4 As shown, an amplitude control system 210 is provided on the elastic damping body 202; the amplitude control system 210 includes a support connecting plate 215 that can move along the axial direction of the piston rod body 201 and a pressure sensor 216 fixed on the support connecting plate 215. A circular hole is processed in the middle of the support connecting plate 215, and the piston rod body 201 passes through the circular hole of the support connecting plate 215 and slides on the inner wall of the circular hole. The diameter of the top cover 204 is larger than the diameter of the circular hole of the support connecting plate 215. The height difference between the top cover 204 and the support connecting plate 215 is the amplitude sensing height. When the piston rod body 201 moves a small distance along the axial direction, the pressure sensor 216 is fixed on the support connecting plate 215. When the amplitude sensing height is reached, the top cover 204 does not contact the pressure sensor 216 and no electrical signal is generated. When the piston rod body 201 moves along the axial direction for a distance greater than the amplitude sensing height, the top cover 204 contacts the pressure sensor 216 to generate an electrical signal and sends it to the system terminal, which issues an alarm to remind the staff that the short stress rolling mill is currently unbalanced. The outer wall of the bottom end of the support link plate 215 is fixedly connected with an elastic telescopic column 214, and one end of the elastic telescopic column 214 is provided with a moving mechanism for driving the support link plate 215 to move along the axial direction of the piston rod body 201.

[0054] Some specific solutions for supporting the connecting plate 215 to move along the axial direction of the piston rod body 201:

[0055] First, the moving mechanism includes a slide groove 205 processed on both sides of the elastic damping body 202, and a moving slider 213 is slidably connected inside the slide groove 205. The top of the moving slider 213 is fixedly connected to the bottom end of the elastic telescopic column 214, and the telescopic end of the elastic telescopic column 214 is fixedly connected to the outer wall of the bottom end of the supporting connecting plate 215. The elastic telescopic column 214 provides elastic supporting force to the supporting connecting plate 215. In the natural elongation state of the elastic telescopic column 214, the height of the supporting connecting plate 215 is a critical point. When the top cover 204 contacts the pressure sensor 216 and squeezes the supporting connecting plate 215, it will move downward with the elastic assistance of the elastic telescopic column 214, so that the top cover 204 will not cause strong pressure on the pressure sensor 216 to cause damage to it. At the same time, under the elastic force of the elastic telescopic column 214, the stress is consumed; the same limiting connecting ring 211 is fixedly connected between the two moving sliders 213, and a fixed connecting ring 211 is processed on one side of the elastic damping body 202. The fixed groove 206 and the limiting connecting ring 211 are processed with a through hole on the side facing the fixed groove 206. The through hole of the limiting connecting ring 211 is connected with a fixing bolt 212 through a thread. The fixing bolt 212 is used to pass through the through hole of the limiting connecting ring 211 and contact with the fixed groove 206 to form a fixed relationship. The staff can adjust the amplitude sensing height by moving the position of the moving slider 213 in the slide groove 205, so that the staff can be notified in time when the amplitude of the short stress rolling mill exceeds the predetermined value during use. The limiting connecting ring 211 enables the two moving sliders 213 to form an integrated moving relationship, and the fixed relationship can be achieved by a fixing bolt 212 at the same time, and the structure is simple; second, the slide groove 205 in the first scheme is replaced by an electric guide rail, and the moving slider 213 is replaced by an electric slider. It is convenient and quick to adjust the amplitude sensing height by electricity. Correspondingly, the structure of the limiting connecting ring 211, the fixing bolt 212 and the fixed groove 206 can be cancelled.

[0056] In some schemes, when using the elastic damping body 202, because the piston rod body 201 cannot be easily compressed (it must be greater than the reverse force of the elastic damping body 202), when the roller is installed, if the size is designed according to the theory, it will sometimes be stuck by the pressing device. During the roller changing process, a large external force (such as a jack) has to be used to compress the elastic colloid, and after the position is fixed by welding, it is pushed into the rolling mill. Although this method can solve the installation problem, it is very unsafe, and the welding requirements are high. The roller changing time is prolonged, which increases the difficulty of roller changing. In order to change the roller conveniently and quickly, such as Figure 5-6As shown, a roll changing adjustment system 220 is provided on the elastic damping body 202, and the roll changing adjustment system 220 divides the piston rod body 201 into a first rod body 221 and a second rod body 222. The top end of the first rod body 221 is fixedly connected to the top cover 204, and the second rod body 222 is connected to the elastic damping body 202. The first rod body 221 and the second rod body 222 are slidably connected to make the first rod body 221 and the second rod body 222 move away from or approach each other. When the first rod body 221 and the second rod body 222 move away from each other, the elastic damping body 202 and the top cover 204 move away from each other. When the first rod body 221 and the second rod body 222 move toward each other, the elastic damping body 202 and the top cover 204 move toward each other. When the elastic damping body 202 and the top cover 204 move toward each other, it is convenient to load the roller into the rolling mill, thereby avoiding compression of the piston rod body 201 as a whole. This can be achieved by only shortening a portion of the piston rod body 201, thereby improving the practicality of the device.

[0057] In order to prevent the first rod body 221 and the second rod body 222 from sliding relative to each other when the rolling mill is working, a locking hole is processed on the second rod body 222, and a locking bolt 223 is provided on the locking hole of the second rod body 222 through a thread. The locking bolt 223 is used to fix or loosen the first rod body 221 and the second rod body 222. When the rolling mill needs to change rolls, it only needs to rotate the locking bolt 223 to loosen the first rod body 221 and the second rod body 222 so that they can slide relative to each other. At this time, the top cover 204 is squeezed to make the first rod body 221 enter the second rod body 222, and then the rolls are loaded into the rolling mill, so that the roll changing operation is convenient and fast.

[0058] Meanwhile, in some other solutions, the first rod body 221 is replaced by an electric push rod fixed inside the second rod body 222. When the roller needs to be changed, the height of the top cover 204 can be adjusted by the electric push rod, which is more convenient and quicker than the above solution. Correspondingly, the positioning bolt 223 structure is cancelled.

[0059] It is worth noting that if Figure 7-8 As shown, the amplitude control system 210 is modified for the outer wall of the elastic damping body 202, and the roller changing adjustment system 220 is modified for the piston rod body 201. The two can be combined with each other without motion interference, so that the roller balancing system 200 has the functions of amplitude sensing and quick roller changing at the same time;

[0060] In some schemes, after the elastic damping body 202 has been working in the harsh environment of the factory for a long time, sewage and other impurities enter the elastic damping body 202, causing it to rust. When the rust reaches a certain degree, the elastic force F≤f (resistance), and the elastic body inside the elastic damping body 202 will be blocked. During the maintenance and disassembly process, two situations may occur: one is that when the outer body is disassembled, the elastic colloid cannot be taken out. By slightly moving it with a heavy object, the internal elastic force is released and the elastic body is ejected; the other is that during the disassembly process, the elastic force ejects the elastic colloid, which is more dangerous. In order to avoid the elastic damping body 202 from being blocked, such as Figure 9-10 As shown, a sealing system 230 is provided on the elastic damping body 202, and the sealing system 230 includes an integral sliding sleeve 231 fixed on the top cover 204, and the bottom of the integral sliding sleeve 231 is slidably connected to the outer wall of the integral sliding sleeve 231, and a dust ring 232 is provided at the bottom of the integral sliding sleeve 231. The integral sliding sleeve 231, the dust ring 232 and the elastic damping base 203 are combined to form a sealed space inside, and the dust ring 232 is a DH type dust ring, which is usually made of polyurethane material and has the characteristics of wear resistance, aging resistance and high pressure resistance. The main function is to prevent dust and other impurities from entering the interior of the mechanical equipment. The integrated structure of the integral sliding sleeve 231 can prevent impurities in the external harsh environment from entering the interior of the elastic damping body 202. It only needs to regularly inject lubricating oil into the interior of the integral sliding sleeve 231 to avoid the occurrence of jamming, and at the same time, it can also extend the service life of the elastic damping body 202.

[0061] It should be noted that if Figure 11-12 As shown, the amplitude control system 210 is a modification of the outer wall of the elastic damping body 202, the roller changing adjustment system 220 is a modification of the piston rod body 201, and the sealing system 230 is a modification of the top cover 204. The modifications among the three do not interfere with each other, and the three can cooperate in pairs or together to formulate different products according to customer needs. It should be noted that when the three cooperate together, a box door 233 needs to be opened on one side of the integral sliding sleeve 231. By opening the box door 233, the internal amplitude control system 210 and the roller changing adjustment system 220 can be adjusted and set to ensure that all functions of the device can be realized.

[0062] A method for installing a short stress rolling mill tie rod balancing structure, comprising:

[0063] S1: The distance between the top cover 204 and the elastic damping body 202 is adjusted by operating the roller changing adjustment system 220, so that the top cover 204 and the elastic damping body 202 are close to each other, and then the bottom of the elastic damping base 203 is first placed in the cover plate of the bottom end cover 101, and then the roller changing adjustment system 220 is operated again to adjust the distance between the top cover 204 and the elastic damping body 202, so that the top cover 204 and the elastic damping body 202 are away from each other, until the top cover 204 is located in the cover plate of the upper end cover 101;

[0064] S2: adjusting the height difference between the supporting connecting plate 215 and the top cover 204 by operating the amplitude control system 210 to determine the amplitude sensing height;

[0065] S3: When it is necessary to perform roll changing operation, the distance between the top cover 204 and the elastic damping body 202 is adjusted by operating the roll changing adjustment system 220 so that the top cover 204 and the elastic damping body 202 are close to each other. At this time, the staff can load the rolls into the rolling mill, and then operate the roll changing adjustment system 220 again to adjust the distance between the top cover 204 and the elastic damping body 202 so that the top cover 204 and the elastic damping body 202 are moved away from each other for reset.

[0066] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A short stress rolling mill tie rod balancing structure, comprising a bearing (105), a tie rod (100), an end cover (101), a copper nut (102), a spherical pad (103) and a ring body (104) symmetrically arranged on both sides of the bearing (105), the copper nut (102), the spherical pad (103) and the ring body (104) being arranged inside the end cover (101) respectively, characterized in that: A cover plate is provided on one side of the end cover (101), and a roller balancing system (200) is provided between the two cover plates; the roller balancing system (200) is an elastic damper; the elastic damper is composed of an elastic damping base (203), an elastic damping body (202), a top cover (204), and a piston rod body (201); the piston rod body (201) and the top cover (204) are fixedly connected; one end of the piston rod body (201) penetrates into the elastic damping body (202); the bottom of the elastic damping body (202) is fixedly connected to the elastic damping base (203); and the elastic damping base (203) and the top cover (204) are respectively placed inside the cover plate of the end cover (101); An amplitude control system (210) is provided on the elastic damping body (202), and the amplitude control system (210) comprises a support connecting plate (215) that can move axially along the piston rod body (201) and a pressure sensor (216) fixed on the support connecting plate (215), a circular hole is processed in the middle of the support connecting plate (215), the piston rod body (201) passes through the circular hole of the support connecting plate (215) and slides on the inner wall of the circular hole, and the height difference between the top cover (204) and the support connecting plate (215) is the amplitude sensing height; A roller changing adjustment system (220) is provided on the elastic damping body (202) and is used to adjust the distance between the top cover (204) and the elastic damping body (202); A sealing system (230) is provided on the elastic damping body (202), the sealing system (230) comprising an integral sliding sleeve (231) fixed on the top cover (204), the bottom of the integral sliding sleeve (231) being slidably connected to the outer wall of the integral sliding sleeve (231), a dust ring (232) being provided at the bottom of the integral sliding sleeve (231), and the integral sliding sleeve (231), the dust ring (232) and the elastic damping base (203) are combined to form a sealed space inside. An elastic telescopic column (214) is fixedly connected to the outer wall of the bottom end of the supporting connecting plate (215), and a moving mechanism is provided at one end of the elastic telescopic column (214) for driving the supporting connecting plate (215) to move along the axial direction of the piston rod body (201); The roller changing adjustment system (220) comprises a first rod body (221) and a second rod body (222); the top end of the first rod body (221) is fixedly connected to the top cover (204), and the second rod body (222) is connected to the elastic damping body (202).

2. A short stress rolling mill tie rod balancing structure according to claim 1, characterized in that: The diameter of the top cover (204) is larger than the diameter of the circular hole of the supporting connecting plate (215); When the piston rod body (201) moves along the axial direction for a distance less than the amplitude sensing height, the top cover (204) does not contact the pressure sensor (216) and no electrical signal is generated; When the piston rod body (201) moves along the axial direction for a distance greater than the amplitude sensing height, the top cover (204) contacts the pressure sensor (216) to generate an electrical signal and send it to the system terminal.

3. A short stress rolling mill tie rod balancing structure according to claim 1, characterized in that: The moving mechanism comprises a slide groove (205) formed on both sides of the elastic damping body (202), a moving slider (213) is slidably connected inside the slide groove (205), and the top end of the moving slider (213) is fixedly connected to the bottom end of the elastic telescopic column (214); A same limiting connecting ring (211) is fixedly connected between the two movable sliders (213); a fixing groove (206) is processed on one side of the elastic damping body (202); a through hole is processed on the side of the limiting connecting ring (211) facing the fixing groove (206); a fixing bolt (212) is connected to the through hole of the limiting connecting ring (211) via a thread; the fixing bolt (212) is used to pass through the through hole of the limiting connecting ring (211) and contact the fixing groove (206) to form a fixed relationship.

4. A short stress rolling mill tie rod balancing structure according to claim 1, characterized in that: The moving mechanism comprises electric guide rails machined on both sides of the elastic damping body (202), and the top end of the electric sliding block on the electric guide rail is fixedly connected to the bottom end of the elastic telescopic column (214).

5. The short stress rolling mill tie rod balancing structure according to claim 1, characterized in that: The first rod body (221) and the second rod body (222) are slidably connected so that the first rod body (221) and the second rod body (222) move away from or closer to each other; When the first rod body (221) and the second rod body (222) move away from each other, the elastic damping body (202) and the top cover (204) move away from each other; When the first rod body (221) and the second rod body (222) approach each other, the elastic damping body (202) and the top cover (204) approach each other; A locking hole is machined on the second rod body (222), and a locking bolt (223) is provided in the locking hole of the second rod body (222) through a thread, and the locking bolt (223) is used to form a fixed or loose relationship between the first rod body (221) and the second rod body (222).

6. A short stress rolling mill tie rod balancing structure according to claim 1, characterized in that: The first rod body (221) and the second rod body (222) are fixedly connected, and the first rod body (221) is an electric push rod used to adjust the height of the top cover (204).

7. The short stress rolling mill tie rod balancing structure according to claim 1, characterized in that: A box door (233) is provided on one side of the integral sliding sleeve (231).

8. A method for installing a short stress rolling mill tie rod balancing structure, applied to a short stress rolling mill tie rod balancing structure as claimed in any one of claims 1 to 7, characterized in that: include: S1: adjusting the distance between the top cover (204) and the elastic damping body (202) by operating the roller-changing adjustment system (220) so that the top cover (204) and the elastic damping body (202) are close to each other, and then placing the bottom of the elastic damping base (203) in the cover plate of the bottom end cover (101), and then operating the roller-changing adjustment system (220) again to adjust the distance between the top cover (204) and the elastic damping body (202) so that the top cover (204) and the elastic damping body (202) are away from each other until the top cover (204) is located in the cover plate of the upper end cover (101); S2: adjusting the height difference between the supporting connecting plate (215) and the top cover (204) by operating the amplitude control system (210) to determine the amplitude sensing height; S3: When a roll changing operation is required, the distance between the top cover (204) and the elastic damping body (202) is adjusted by operating the roll changing adjustment system (220) so that the top cover (204) and the elastic damping body (202) are close to each other. At this time, the staff can load the rolls into the rolling mill, and then operate the roll changing adjustment system (220) again to adjust the distance between the top cover (204) and the elastic damping body (202) so that the top cover (204) and the elastic damping body (202) are moved away from each other for reset.

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