Safe and efficient cold shear locking cylinder replacement device and replacement method thereof

Abstract

The invention discloses a safe and efficient replacement device and method for a cold shear locking cylinder. The device comprises a lifting system and a fixing system. The device comprises a fixing system and a lifting system. A first vertical rod piece is arranged at one end of the fixing system, and a gap between the first vertical rod piece and the second vertical rod piece is larger than the diameter of the lifting handle; second rod pieces are arranged on vertical rods on the two sides of the third transverse rod, the distance between the second rod pieces is determined according to the lifting stroke, and the upper ends of the second rod pieces are connected with annular supports. In the lifting system, a lifting handle is hinged between the first rod pieces through a pin shaft, one end of the lifting handle is connected with a bottom plate with an annular bottom plate, and baffles on the two sides of the annular bottom plate penetrate through gaps of the second rod pieces. In addition, the stroke component comprises middle cylindrical steel and column feet on the two sides, the column feet are equal to the upper ends of the connecting sides of the cylindrical steel in height, adaptive slotted holes are formed in the cylindrical steel on and above the motion trail of the bottom plate, the column feet penetrate through the circular holes of the circular supports, and the diameters of the column feet are smaller than the inner diameters of the holes. According to the device, an operator can safely stand, so that the risk during replacement operation is reduced.

Description

Technical Field

[0001] The present invention belongs to the field of steel rolling shearing equipment maintenance and repair, and more specifically, relates to a safe and efficient replacement device for a cold shear locking cylinder and a replacement method thereof. Background Art

[0002] In the modern steel rolling production system, the cold shear, as the core equipment of the rolling production line, shoulders the key tasks of cutting the heads, tails and lengths of the rolled pieces transported in an orderly manner from the cooling bed. Its stable and efficient operation is not only the key to ensure the continuity of the steel rolling production process, but also directly related to the dimensional accuracy and quality stability of the products, and has a decisive impact on the economic benefits of the entire steel rolling production.

[0003] At present, the locking assembly of the blade holder of the cold shear generally adopts a design in which the cylinder barrel and the cylinder head are separated from each other, and there is no fastening connection between the two. It mainly relies on the high-precision machined mounting holes on the cold shear box to achieve interference fit with the cylinder barrel, and the cylinder head is directly fixedly connected to the cold shear box. In addition, a hard pipe is used to connect the hydraulic power system oil circuit and the locking cylinder. However, under actual complex and harsh working conditions, the cold shear machine needs to withstand huge shearing forces and frequent mechanical vibrations when performing shearing operations. After a period of high-intensity use, the locking assembly of the shear blade holder is prone to a series of faults. Among them, the seal between the piston and the cylinder barrel frequently leaks due to long-term wear and extrusion; the hard pipe joints also become loose due to vibration and stress, causing oil leakage. These problems will not only reduce the working efficiency of the equipment, but may also seriously affect the shearing accuracy due to unstable pressure in the hydraulic system, resulting in an increase in the scrap rate.

[0004] What is even more difficult is that the locking cylinder of the cold shear machine is installed inside the cold shear box, and the space in this area is extremely narrow. Each time the knife holder locking cylinder is disassembled and assembled, due to space limitations, only one person is allowed to enter the box to operate, and others can only provide limited assistance outside the box. The locking cylinder itself is heavy, and a single person entering the box cannot lift it independently. During the installation process, due to the small operating space, it is difficult for a single person to accurately assemble the heavy locking cylinder into the cylinder barrel. This not only requires a lot of physical strength and time, greatly increasing the maintenance hours, but may also cause long-term production stagnation, seriously delaying the production progress, and causing considerable economic losses to the company.

[0005] Therefore, developing a special device that can quickly and efficiently replace the locking cylinder of the cold shear and ensure the safety of maintenance operations has become an important issue that needs to be solved in the current steel rolling industry. Based on a deep understanding of the current maintenance process and long-term accumulated practical experience, the present invention is committed to creating a fast, efficient and labor-saving maintenance tool to address this problem. Summary of the invention

[0006] The present invention aims to develop a replacement device and method for the cold shear locking cylinder, so as to solve the problem of replacing the locking cylinder of the cold shear in the rolling shear equipment. In actual production, the locking cylinder of the cold shear leaks oil frequently. Its installation position is narrow and it is heavy. It is difficult for a single person to lift and assemble it. The overhaul is time-consuming and laborious, there are safety risks, and it affects the production continuity. The present invention designs a replacement device composed of a lifting system, a fixing system and a stroke member, and uses the lever principle to realize the convenient lifting and precise assembly of the locking cylinder and the pressing block. It allows the operators to have a safe standing position, reduces the safety risks, improves the replacement efficiency, shortens the overhaul time, and ensures the stable operation of the rolling production.

[0007] In view of the above defects or improvement requirements of the prior art, as the first aspect of the present invention, the present invention provides a safe and efficient replacement device for the cold shear locking cylinder, including: a lifting system and a fixing system;

[0008] The fixing system includes a base arranged at the bottom. One end of the base is provided with a first rod arranged vertically. A gap larger than the diameter of the lifting handle is reserved between the first rods; on the first vertical rod and the second vertical rod on both sides of its third cross bar, two rods of the same length are respectively arranged to form a second rod. A gap set according to the stroke of the lifting system is left between the second rods on each side; a circular support is connected and arranged at the upper end of the second rod;

[0009] The lifting system includes a lifting handle hinged between the first rods through a pin shaft. One end of the lifting handle is connected to a bottom plate. A circular bottom plate is arranged at the top of the bottom plate; baffles are connected to both sides of the circular bottom plate. Each baffle passes through the gap between two second rods;

[0010] The lifting system further includes a stroke member. The stroke member includes a cylindrical steel in the middle and column feet connected and arranged on both sides of the cylindrical steel through a transverse connecting bridge; the column feet and the cylindrical steel are at the same height at the upper end of their connecting sides; the cylindrical steel is arranged on the movement track of the bottom plate, and its middle part coincides with the middle movement track of the bottom plate; a slot hole matching the column head of the locking cylinder is reserved above the cylindrical steel; the two sides of the column feet respectively pass through the round holes in the circular area of the circular support for setting, and the diameter of the column feet is smaller than the inner diameter of the round holes.

[0011] Further, the base includes a first cross bar, a second cross bar and a third cross bar which are arranged horizontally in parallel, aligned and have the same length in sequence; a first vertical rod and a second vertical rod are respectively and vertically connected to both sides of the three cross bars; one end heads of the first vertical rod and the second vertical rod are respectively connected to both sides of the first cross bar, and the other side is connected to both sides of the third cross bar; the second cross bar is arranged between the first vertical rod and the second vertical rod and is close to the first cross bar.

[0012] Further, the lifting handle is in a cylindrical rod shape structure, with one end close to the bottom plate bent upward and the other end bent downward, and the pin shaft penetrates through the lifting handle.

[0013] Further, the baffle plate displaces between the second rods as the lifting handle is pressed down or lifted up, and stops displacing when it touches the second rods.

[0014] Further, no less than three third rods are evenly distributed and arranged at the top of the annular area of the annular support.

[0015] Further, the length of the second rod is not greater than the length of the first rod, and the length of the third rod is not greater than half of the length of the second rod.

[0016] Further, no less than two groups of circular holes are arranged in the annular area of the annular support, and each group of circular holes is symmetrically arranged on the two sides of the center of the ring on the ring.

[0017] As the second aspect of the present invention, the present invention also provides a safe and efficient replacement method for the cold shear locking cylinder, which is characterized by including the following steps:

[0018] S1. Move the cold shear locking cylinder replacement device to the side of the cold shear machine, gently place it into the cold shear box, adjust the position to ensure that the device is directly below the locking cylinder to be replaced;

[0019] S2. Lift and place the locking cylinder or the pressing block to be replaced onto the annular support of the device;

[0020] S3. Arrange an operator to enter the cold shear box, hold the locking cylinder or the pressing block with both hands to keep it stable and prevent shaking; another operator stands outside the cold shear box and holds the lifting handle;

[0021] S4. The operator outside the box slowly operates the lifting handle to make the bottom plate and the annular bottom plate connected to the bottom plate rise through the hollow area of the annular support to contact the bottom plate of the locking cylinder or the pressing block, and then lift the locking cylinder or the pressing block at a uniform speed; during this process, the operator inside the box cooperates to adjust the position, find the assembly gap accurately, and precisely install the locking cylinder or the pressing block.

[0022] Further, it also includes:

[0023] S5. If the locking cylinder or the pressing block is directly placed on the annular support and cannot be pressed and installed in place due to insufficient height after operating the lifting handle, operate according to the following steps:

[0024] Place the stroke member gently on the annular support to ensure that the column feet on both sides of the stroke member accurately pass through the circular holes on both sides of the annular support;

[0025] Place the locking cylinder or the pressing block on the stroke member;

[0026] The operator outside the box operates the lifting handle again to press the locking cylinder or pressure block into place.

[0027] Furthermore, the slotted hole above the cylindrical steel of the stroke component cooperates with the column head of the locking cylinder to position the locking cylinder.

[0028] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art:

[0029] 1. The replacement device of the present invention is divided into a lifting system and a fixing system, which provides a reasonable standing position layout for operators. When working in the cold shear machine box, the narrow space can easily put people in a bad position, increasing the risk of sprains and injuries. The vertical poles, base and annular support of the fixing system construct a stable bearing structure. The lifting handle and pin shaft design of the lifting system allow the operator to easily control the lifting and lowering of the locking cylinder outside the box, avoiding people from being in dangerous areas for a long time, effectively solving the problem of personnel positioning, minimizing the possibility of safety accidents, and greatly improving the personal safety of operators.

[0030] 2. The replacement device of the present invention significantly improves the efficiency of the replacement operation by applying the principle of leverage. The lifting handle, base plate and annular base plate in the lifting system form a labor-saving lever structure. When replacing the locking cylinder or the pressure block, the operator only needs to hold the lifting handle outside the box for simple operation, and can use the labor-saving effect of the lever to easily lift the heavier locking cylinder or pressure block at a uniform speed. Compared with the previous long-term lifting by manpower, this design greatly reduces the labor intensity of the operator and greatly shortens the operation time, making the replacement of the locking cylinder more efficient, thereby effectively reducing the production downtime caused by equipment maintenance and improving the overall production efficiency of the steel rolling production line.

[0031] 3. The replacement device of the present invention reduces the manufacturing cost and difficulty of the device through a streamlined structural design. The device as a whole is composed of 11 main components, and the connection method between the components is mainly welding, and the process is simple. The base is welded from five sections of round tubes, and the structures of components such as the vertical poles and circular supports are also relatively simple. Compared with some complex replacement devices, the present invention does not require a large number of complex parts and high-precision processing technology, reduces the manufacturing cost, and is easy to repair and maintain. On the premise of ensuring functionality, this streamlined structural design not only saves resources, but also lays a good foundation for its wide application in the steel rolling industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of a device for safely and efficiently replacing a cold shear locking cylinder according to an embodiment of the present invention;

[0033] Figure 2 Schematic diagram of the base structure according to an embodiment of the present invention;

[0034] Figure 3 Schematic diagram of the stroke member according to an embodiment of the present invention;

[0035] Figure 4 Top-down three-dimensional view of the locking cylinder replacement device according to an embodiment of the present invention;

[0036] Figure 5 Schematic diagram of the connection of the lifting handle, the bottom plate and the annular bottom plate according to an embodiment of the present invention;

[0037] Figure 6 Enlarged view of node A according to an embodiment of the present invention;

[0038] Figure 7 Flowchart of the replacement method according to an embodiment of the present invention;

[0039] In all the drawings, the same reference numerals represent the same technical features, specifically: 1 - lifting handle; 2 - pin shaft; 3 - first rod; 4 - annular support; 41 - round hole; 5 - third rod; 6 - bottom plate; 7 - annular bottom plate; 8 - baffle; 9 - second rod; 10 - base; 101 - first cross bar; 102 - second cross bar; 103 - third cross bar; 104 - first vertical bar; 105 - second vertical bar; 11 - stroke member; 111 - column foot; 112 - cylindrical steel; 113 - connecting bridge. Detailed implementation manners

[0040] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0041] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship and movement conditions between the components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0042] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments may be combined with each other, but it must be based on the fact that those skilled in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0043] In the present invention, the term "comprise", "include" or any other variant thereof is intended to cover a non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, the elements defined by the statement "comprising..." do not preclude the presence of additional identical elements in the process, method, article or device comprising the said elements.

[0044] Embodiment 1

[0045] Please refer to Figure 1 , this Embodiment 1 provides a safe and efficient replacement device for the cold shear locking cylinder, comprising: a fixing system and a lifting system;

[0046] (1) Fixing system

[0047] The fixing system is the basic support structure of the entire replacement device, and its stability directly affects the safety and reliability of the replacement operation. The core component of this system is the base 10, please refer to Figure 2 , the base 10 is composed of a first cross bar 101, a second cross bar 102 and a third cross bar 103 which are arranged horizontally in parallel, aligned and have the same length in sequence, and a first vertical bar 104 and a second vertical bar 105 are vertically connected to both sides of the three cross bars respectively. Specifically, one end of the first vertical bar 104 and the second vertical bar 105 are respectively connected to both sides of the first cross bar 101, and the other side is connected to both sides of the third cross bar 103, forming a stable rectangular frame structure. The second cross bar 102 is arranged between the first vertical bar 104 and the second vertical bar 105 and is close to the first cross bar 101. This layout design not only enhances the overall strength of the base but also provides a reasonable spatial layout for the installation of subsequent components. Through mechanical calculation, it can be known that this rectangular frame structure can evenly disperse the stress when bearing the weight of the locking cylinder and the external force during the operation, avoiding structural damage caused by local stress concentration.

[0048] On the second crossbar 102 of the base 10, two circular tubes of the same length are vertically and parallelly arranged longitudinally to form the first rod member 3. A gap larger than the diameter of the lifting handle 1 is reserved between the first rod members 3. The setting of this gap is to ensure that the lifting handle 1 can rotate freely therein while avoiding interference with the first rod member 3 during operation. On the first vertical rod 104 and the second vertical rod 105 on both sides of the third crossbar 103 of the base 10, two circular tubes of the same length are respectively arranged to form the second rod member 9. A gap set according to the stroke of the lifting system is left between the second rod members 9 on each side. The size of this gap is precisely calculated to ensure that the baffle 8 in the lifting system can move smoothly between the second rod members 9 and effectively limit the movement range of the baffle 8 to prevent its excessive movement from affecting the stability of the device. The other end of the second rod member 9 is connected to a circular support 4, and three third rod members 5 are evenly distributed on the top of the annular area of the circular support 4.

[0049] The design of the third rod member 5 has unique innovation and practicality. On the one hand, when the locking cylinder or the pressing block is placed on the circular support 4, the third rod member 5 restricts the rotation of the locking cylinder and the pressing block through its layout and height, ensuring that the locking cylinder or the pressing block maintains a stable initial position before lifting and avoiding installation angle deviation or safety hazards caused by accidental rotation. The three third rod members 5 are evenly distributed in a ring, and their height is slightly lower than the top height after the locking cylinder or the pressing block is placed, forming a physical limiting barrier to effectively prevent the locking cylinder and the pressing block from rotating in the horizontal direction. Through actual tests, when the locking cylinder or the pressing block is placed on the circular support 4, the third rod member 5 greatly improves the stability of the placement by restricting its rotation angle. On the other hand, when the locking cylinder and the pressing block are lifted with the lifting system beyond the height of the third rod member 5, the base 10 can be rotated to make the third rod member 5 convert into a support structure for the locking cylinder and the pressing block. At this time, the third rod member 5 can bear the weight of the locking cylinder and the pressing block, providing a stable support point for the operator to perform assembly operations in different directions and facilitating the adjustment of the position of the locking cylinder or the pressing block from multiple angles to achieve precise assembly. Two groups of circular holes 41 are arranged in the annular area of the circular support 4. Each group of circular holes 41 has 1 circular hole symmetrically arranged on the two sides of the center of the circle of the ring respectively. These circular holes are used to cooperate with the column feet 111 of the stroke member 11 to achieve the quick installation and positioning of the stroke member 11.

[0050] In terms of material selection, components such as the base 10, the first rod 3, the second rod 9, and the annular support 4 are all made of high-strength steel. Steel has good comprehensive mechanical properties, high yield strength and good toughness, and can withstand large loads, ensuring that the fixing system will not deform or be damaged due to stress during the process of replacing the locking cylinder. In terms of processing technology, the main connection method between components is welding. The welding process uses carbon dioxide gas shielded welding. This welding method has the advantages of high welding efficiency, good welding quality, and small deformation. During the welding process, welding parameters such as welding current, welding voltage, and welding speed are strictly controlled to ensure that the welds are uniform, full, and free of welding defects such as pores and slag inclusions, thereby ensuring the overall structural strength of the fixing system. When the third rod 5 is processed, through precise cutting and grinding processes, its height consistency and surface flatness are ensured to ensure the reliable realization of the limiting and supporting functions.

[0051] (2) Lifting system

[0052] Please refer to Figures 4 - 6 , the lifting system is a key part for realizing the lifting and precise assembly of the locking cylinder or the pressing block. It mainly includes a lifting handle 1, a pin shaft 2, a bottom plate 6, an annular bottom plate 7, a baffle 8, and a stroke member 11.

[0053] The lifting handle 1 is arranged between the first rods 3 through the pin shaft 2. The lifting handle 1 is in the shape of a cylindrical rod. One end close to the bottom plate 6 bends upward, and the other end bends downward. This unique shape design is based on the lever principle, aiming to provide a more comfortable operation angle and a more labor-saving operation method for the operator. Through ergonomic analysis, this shape design makes the force angle of the operator's arm in the most comfortable range during operation, which can reduce operation fatigue and improve work efficiency. The pin shaft 2 passes through the lifting handle 1, and an interference fit is adopted between the pin shaft 2 and the first rod 3 to ensure that the lifting handle 1 will not loosen or displace during rotation, guaranteeing the stability and reliability of the operation. One end of the lifting handle 1 is connected to the bottom plate 6, and an annular bottom plate 7 is arranged on the top of the bottom plate 6. The setting of the annular bottom plate 7 increases the structural strength of the bottom plate 6 on the one hand, and on the other hand, it can play a certain positioning role when placing the locking cylinder or the pressing block, facilitating its accurate placement at the center position of the lifting system. The two sides of the annular bottom plate 7 are connected to the baffle 8. Each baffle 8 passes through the gaps between the two second rods 9, and the baffle 8 displaces between the second rods 9 as the lifting handle 1 is pressed down or lifted up, and stops displacing when it touches the second rod 9. The function of the baffle 8 is to limit the rising height of the lifting system to prevent the locking cylinder or the pressing block from detaching from the device due to excessive lifting, causing a safety accident.

[0054] Please refer to Figure 3As an important auxiliary component of the lifting system, the stroke component 11 has an ingenious structural design, which can effectively solve the problem that the locking cylinder or the pressure block cannot be pressed into place due to insufficient height in some cases. The stroke component 11 includes a central cylindrical steel 112 and a column foot 111 connected on both sides of the cylindrical steel 112 through a horizontal connecting bridge 113. The column foot 111 and the cylindrical steel 112 maintain the same height at the upper end of the connection side. This design is to ensure that the stroke component 11 can remain horizontal when placed on the annular support 4, thereby ensuring the stability of the placement of the locking cylinder or the pressure block. The cylindrical steel 112 is set on the motion trajectory of the base plate 6, and its middle part coincides with the motion trajectory of the middle part of the base plate 6, and a slot hole matching the column head of the locking cylinder is reserved above the cylindrical steel 112. The size of the slot hole accurately matches the size of the column head of the locking cylinder, which can play a good positioning and guiding role for the locking cylinder during the lifting process. The two sides of the column foot 111 are respectively arranged through the circular holes 41 in the annular area of the annular support 4, and the diameter of the column foot 111 is smaller than the inner diameter of the circular hole 41, and a certain gap is left between the two, which is convenient for the rapid installation and removal of the travel component 11. In actual operation, the time for installing or removing the travel component 11 does not exceed 2 minutes, which greatly improves the work efficiency.

[0055] During the processing of the lifting system, the lifting handle 1, the bottom plate 6, the annular bottom plate 7, the baffle 8 and other components are also made of high-strength steel to ensure that they will not deform when subjected to force. For the pin 2, a high-quality alloy steel material is selected. After heat treatment, the material has high hardness and wear resistance, which can ensure the matching accuracy between the pin 2 and the lifting handle 1 and the first rod 3 during long-term use. The cylindrical steel 112 and the column foot 111 of the stroke component 11 are made by forging technology. The forging process can make the internal structure of the steel more dense, improve its mechanical properties, and ensure that the stroke component 11 will not break when subjected to a large load.

[0056] In a preferred embodiment, the size design of each component is subjected to rigorous mechanical calculations and actual working condition simulations to ensure that the device has good stability and operability while meeting functional requirements.

[0057] The first rod 3 and the second rod 9 have the same length, which is designed according to the height of the internal space of the cold shear machine box and the comfortable height of the operator when operating outside the box. Generally, such a length design enables the lifting handle 1 to be in a relatively natural and labor-saving operating angle during rotation, and at the same time ensures that there is enough space for the lifting system to move. The length of the third rod 5 is half of that of the second rod 9, and this length design closely revolves around its dual functions. When restricting rotation, such a designed height can effectively block the horizontal displacement of the locking cylinder and the pressure block, and at the same time will not hinder the placement and removal operations; when used as a support, this height can be adapted to the height of the lifted locking cylinder or pressure block to provide stable support and facilitate the operator to operate from different angles.

[0058] The size of the base 10 needs to consider the bearing capacity of the device and the placement space inside the cold shear machine box. The lengths of the three cross bars are generally designed according to the size of the locking cylinder of the cold shear machine and the diameter of the circular support 4 to ensure that the circular support 4 can be stably installed on the base 10 and can accommodate locking cylinders or pressure blocks of different specifications. The diameters of the cross bars and the vertical bars are selected according to the bearing capacity of the base. Through reasonable pipe diameter design, while ensuring the strength of the base, the overall weight of the device is minimized as much as possible to facilitate handling and installation.

[0059] The length and bending angle of the lifting handle 1 are also carefully designed. The upward bending angle of the end of the lifting handle 1 close to the bottom plate 6 is 30° - 45°, and the downward bending angle of the other end is 15° - 25°. Such an angle design enables the operator to hold the lifting handle 1 outside the box with a relatively comfortable posture, and at the same time can make full use of the lever principle to lift the locking cylinder or the pressure block with less force.

[0060] Embodiment 2

[0061] Combined with Figures 1 - 6 , as Figure 7 shown, Embodiment 2 of the present invention provides a safe and efficient method for replacing the cold shear locking cylinder, including:

[0062] When actually performing the operation of replacing the cold shear locking cylinder, first, a comprehensive safety inspection and environmental assessment of the operation site need to be carried out. Confirm that the cold shear machine has been completely shut down, cut off the power supply and hydraulic source of the equipment, and set obvious warning signs to prevent unauthorized personnel from misoperating. Since the internal space of the cold shear machine box is narrow and the structure is complex, when handling the cold shear locking cylinder replacement device, appropriate lifting equipment or multi-person cooperation is required to avoid damage to the device due to collision. During the process of smoothly placing the device into the cold shear box, always pay attention to keeping the balance of the device to prevent it from tipping over.

[0063] When placing the device, its position needs to be carefully adjusted to ensure that the device is directly below the locking cylinder to be replaced. This process is crucial. If the position of the device is deviated, it will directly affect the replacement accuracy and efficiency of the subsequent locking cylinder. During the adjustment process, the initial alignment can be carried out by observing the positioning marks pre-set inside the base 10 of the device and the body of the cold shear. If there are no positioning marks on the body, the installation position of the locking cylinder can be referred to, and measuring tools such as tape measures and laser rangefinders can be used to accurately measure the relative position relationship between the device and the locking cylinder to ensure the accurate placement of the device. At the same time, it is necessary to check whether the device is firmly placed inside the cold shear box to avoid tilting of the device due to unevenness inside the box.

[0064] When lifting the locking cylinder or the pressing block to be replaced onto the circular support 4 of the device, the number and standing positions of the operators should be reasonably arranged according to the weight and size of the locking cylinder or the pressing block. For a locking cylinder with a large weight, a multi-person cooperation method should be adopted for placement to ensure the safety of the operation process. During the lifting and placement process, the operators need to be under unified command and coordinate their actions to keep the locking cylinder or the pressing block stable and prevent it from slipping or colliding due to uneven stress. At the same time, the center of the locking cylinder or the pressing block should be made to coincide as much as possible with the center of the circular support 4 to ensure the stability of the subsequent lifting process. At this time, the third rod 5 will immediately play a role in restricting rotation, stabilizing the locking cylinder or the pressing block in the initial position and preventing it from accidentally rotating during the subsequent operation to ensure the safe and orderly progress of the operation.

[0065] After the placement is completed, arrange an experienced operator who is familiar with the internal structure of the cold shear to enter the cold shear box, hold the locking cylinder or the pressing block with both hands to keep it stable and prevent it from shaking. The operator inside the box needs to closely monitor the state of the locking cylinder or the pressing block, perceive its subtle displacement or tilt changes in real time, and adjust the holding force and position in a timely manner to prepare for the subsequent assembly work. At the same time, the operator inside the box should wear necessary safety protection equipment such as safety helmets, protective gloves, and goggles to ensure their own safety. Another operator stands outside the cold shear box and holds the lifting handle 1. Before the operation, the operator outside the box needs to conduct a comprehensive inspection of components such as the lifting handle 1 and the pin shaft 2 to confirm that they are firmly installed without abnormal conditions such as looseness and wear to prevent safety hazards such as component detachment during the operation.

[0066] The operator outside the box presses down the lifting handle 1 and uses the lever principle to lift the locking cylinder or the pressure block at a uniform speed. During the lifting process, the lifting handle 1 rotates around the pin shaft 2, driving the bottom plate 6 and the annular bottom plate 7 to move upward through the hollow area of the annular support (4) to contact the bottom plate of the locking cylinder or the pressure block, thereby pushing the locking cylinder or the pressure block to rise. When the locking cylinder and the pressure block are lifted above the height of the third rod 5, if assembly operations need to be performed from other directions, the operator inside the box can cooperate with the operator outside the box to rotate the base 10 to convert the third rod 5 into a supporting structure. At this time, the operator inside the box can find the assembly gap based on the relative relationship between the locking cylinder or the pressure block and the installation position under the support of the third rod 5, and accurately install the locking cylinder or the pressure block. During this process, the operator inside the box can communicate with the operator outside the box through gestures or language, and timely feedback the position and status of the locking cylinder or the pressure block so that the operator outside the box can adjust the lifting speed and height.

[0067] If the locking cylinder or the pressing block is placed directly on the annular support 4, and after operating the lifting handle 1, it cannot be pressed into place due to insufficient height, the stroke component 11 is required. First, place the stroke component 11 steadily on the annular support 4, and ensure that the column feet 111 on both sides of the stroke component 11 accurately pass through the circular holes 41 on both sides of the annular support 4. When placing the stroke component 11, attention should be paid to the alignment of the column feet 111 and the circular holes 41 to avoid affecting the stability of the stroke component 11 due to misalignment. Then place the locking cylinder or the pressing block on the stroke component 11. At this time, the slot above the cylindrical steel 112 cooperates with the column head of the locking cylinder to position the locking cylinder. The operator outside the box operates the lifting handle 1 again to further lift the locking cylinder or the pressing block through the stroke component 11 until it is pressed into place. In the process of using the stroke component 11, the operators inside and outside the box are also required to work closely together to ensure the accuracy and safety of the operation.

[0068] After the assembly is completed, the operators in the box need to conduct a comprehensive and detailed inspection of the installation status of the locking cylinder or the pressure block. The inspection content includes the tightness of the connection parts. Use a professional torque wrench to detect whether the tightening torque of the bolts, nuts and other connectors meets the specified requirements; whether the assembly clearance meets the requirements, use a feeler gauge and other measuring tools to measure the assembly clearance of key parts to ensure that it is within the allowable error range. At the same time, it is also necessary to check the sealing performance of the locking cylinder and observe whether there are signs of oil leakage. If any problems are found during the inspection, they must be adjusted or reassembled immediately until the installation requirements are met. After confirming that the installation is correct, follow the opposite operation process of the handling device entering the cold shear box to remove the replacement device from the cold shear box. During the removal process, pay attention to the safety of the device to avoid collision. Finally, clean up the work site, properly store the replaced locking cylinder or pressure block, organize the tools and equipment, and complete the replacement operation of the cold shear locking cylinder.

[0069] Those skilled in the art can easily understand that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. Cold shearing locking cylinder safety and high-efficiency replacement device, characterized in that, Including: A lifting system and a fixing system; The fixing system includes a base (10) arranged at the bottom. One end of the base is provided with a vertically arranged first rod (3), and a gap larger than the diameter of the lifting handle (1) is reserved between the first rods (3); On the first vertical rod (104) and the second vertical rod (105) on both sides of its third cross rod (103), two rods of the same length are respectively arranged to form a second rod (9), and a gap set according to the stroke of the lifting system is reserved between the second rods (9) on each side; The upper end of the second rod (9) is connected with a circular support (4); The lifting system includes a lifting handle (1) hinged between the first rods (3) through a pin shaft (2). One end of the lifting handle (1) is connected with a bottom plate (6), and a circular bottom plate (7) is arranged on the top of the bottom plate (6); The two sides of the circular bottom plate (7) are connected with baffles (8), and each baffle (8) passes through the gap between two second rods (9); The lifting system further includes a stroke member (11). The stroke member (11) includes a cylindrical steel (112) in the middle and column feet (111) connected and arranged on both sides of the cylindrical steel (112) through a transverse connecting bridge (113); The column feet (111) and the cylindrical steel (112) are at the same height at the upper end of their connecting sides; The cylindrical steel (112) is arranged on the movement track of the bottom plate (6), and the middle part thereof coincides with the movement track of the middle part of the bottom plate (6); A slot hole matching the column head of the locking cylinder is reserved above the cylindrical steel (112); The two sides of the column feet (111) respectively pass through the round holes (41) in the circular area of the circular support (4) for setting, and the diameter of the column feet (111) is smaller than the inner diameter of the round holes (41).

2. The cold shearing locking cylinder safety and high-efficiency replacement device according to claim 1, characterized in that The base (10) includes a first cross rod (101), a second cross rod (102), and a third cross rod (103) arranged horizontally, parallelly, aligned, and with the same length in sequence; The first vertical rod (104) and the second vertical rod (105) are respectively and vertically connected to both sides of the three cross rods; One end heads of the first vertical rod (104) and the second vertical rod (105) are respectively connected to both sides of the first cross rod (101), and the other side is connected to both sides of the third cross rod (103); The second cross rod (102) is arranged between the first vertical rod (104) and the second vertical rod (105) and is close to the first cross rod (101).

3. The cold shear locking cylinder safety and high-efficiency replacement device according to claim 1, characterized in that, The lifting handle (1) is of a cylindrical rod-shaped structure. One end close to the bottom plate (6) is bent upward, and the other end is bent downward. The pin shaft (2) penetrates through the lifting handle (1) for setting.

4. The cold shear locking cylinder safety and high-efficiency replacement device according to claim 1, characterized in that The baffle (8) displaces between the second rods (9) with the downward pressure or upward movement of the lifting handle (1), and stops displacing when touching the second rods (9).

5. The cold shear locking cylinder safety and high-efficiency replacement device according to claim 1, characterized in that, At least three third rods (5) are evenly distributed on the top of the circular area of the circular support (4).

6. According to the cold shear locking cylinder safety and high-efficiency replacement device as claimed in claim 1 or described above, it is characterized in that The length of the second rod (9) is not greater than the length of the first rod (9), and the length of the third rod (9) is not greater than half of the length of the second rod (9).

7. The safety and high-efficiency replacement device for the cold shear locking cylinder according to claim 1, wherein The annular support (4) is provided with no less than two groups of round holes (41) in the annular area, and one round hole (42) is symmetrically arranged on each of the two sides of the center of the ring in each group of round holes (41).

8. Method for safely and efficiently replacing cold shearing locking cylinder, characterized in that, It includes the following steps: S1. Move the cold shear locking cylinder replacement device to the side of the cold shear, smoothly place it into the cold shear box, adjust the position to ensure that the device is directly below the locking cylinder to be replaced. S2. Lift the locking cylinder or the pressing block to be replaced and place it on the annular support (4) of the device. S3. Arrange an operator to enter the cold shear box, hold the locking cylinder or the pressing block with both hands to keep it stable and prevent it from shaking; another operator stands outside the cold shear box and holds the lifting handle (1). S4. The operator outside the box slowly operates the lifting handle (1) to make the bottom plate (6) and the annular bottom plate (7) connected to the bottom plate (6) rise through the hollow area of the annular support (4) to contact the bottom plate of the locking cylinder or the pressing block, and then evenly lift the locking cylinder or the pressing block; during this process, the operator inside the box cooperates to adjust the position, find the assembly gap, and accurately install the locking cylinder or the pressing block.

9. The method for safely and efficiently replacing the cold shear locking cylinder according to claim 8, characterized in that, It also includes: S5. If the locking cylinder or the pressing block is directly placed on the annular support (4) and cannot be pressed in place due to insufficient height after operating the lifting handle (1), operate according to the following steps: Smoothly place the stroke member (11) on the annular support (4) to ensure that the column feet (111) on both sides of the stroke member (11) accurately pass through the round holes (41) on both sides of the annular support (4). Place the locking cylinder or the pressing block on the stroke member (11). The operator outside the box operates the lifting handle (1) again to press the locking cylinder or the pressing block in place.

10. The method for safely and efficiently replacing the cold shear locking cylinder according to claim 9, wherein The slot on the upper part of the cylindrical steel (112) of the stroke member (11) cooperates with the column head of the locking cylinder to position the locking cylinder.

Images