Hoisting tool and hoisting method for equipment maintenance

Abstract

The invention provides a hoisting tool for equipment overhaul and a hoisting method.The hoisting tool for equipment overhaul comprises a main hoisting cross beam, a main balancing weight installed at one end of the main hoisting cross beam and an auxiliary hoisting mechanism installed at the other end of the main hoisting cross beam, and the auxiliary hoisting mechanism comprises a hoisting connecting piece; the hoisting connecting piece is used for being connected with a to-be-hoisted component, and a hoisting part is arranged on the main hoisting cross beam and used for being connected with hoisting equipment. By means of the balance effect of the main balancing weight located at one end of the main hoisting cross beam, hoisting equipment directly hoists the hoisting part on the main hoisting cross beam, corresponding parts can be stably hoisted through the auxiliary hoisting mechanism located at the other end of the main hoisting cross beam, and then the parts can be moved out of a narrow space in a translation mode and the like. The labor intensity of operators is relieved, the operation difficulty is lowered, manpower and material resources are saved, and the operation safety and the operation efficiency are greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment maintenance, and in particular to a hoisting tool and a hoisting method for equipment maintenance. Background Art

[0002] At present, in the replacement operation of the five-roller straightening roller of the cold rolling mill, due to the obstruction of other equipment components above the five-roller straightening roller, it is impossible to use a crane or other lifting equipment to directly connect with the five-roller straightening roller to drive the five-roller straightening roller to rise and fall and translate. In addition, due to the relatively compact structure design of the rolling mill, there is no lifting point above the inside of the rolling mill. Therefore, during the maintenance and replacement operation, it is often necessary to build an I-beam above the inside of the rolling mill as a lifting point, and use a hand winch to dismantle and transport the five-roller straightening roller. During the dismantling process, since the hand winch can only be pulled out diagonally upward from the exit, in order to avoid the roller from bumping against the roller surface and causing irreparable damage, it is necessary to manually apply a horizontal force to the roller toward the inside of the mill outlet to ensure that the roller is lifted out smoothly. This operation method is complicated to operate, and leads to high labor intensity and high difficulty of the workers. The operators and equipment components are easily hit, the operation safety is low, and the operation efficiency is also low. Summary of the invention

[0003] In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a lifting tool for equipment maintenance that can reduce labor intensity and improve work safety and work efficiency.

[0004] To achieve the above-mentioned purpose, the present invention provides a lifting tool for equipment maintenance, including a main lifting beam, a main counterweight block installed at one end of the main lifting beam, and a secondary lifting mechanism installed at the other end of the main lifting beam, the secondary lifting mechanism including a lifting connector, the lifting connector is used to connect with the component to be lifted, the main lifting beam is provided with a lifting part, and the lifting part is used to connect with the lifting equipment.

[0005] Furthermore, the auxiliary lifting mechanism is connected to the main lifting beam via a detachable connecting structure.

[0006] Furthermore, the auxiliary lifting mechanism also includes a lifting drive component, which is connected to the lifting connection piece, and the lifting drive component can drive the lifting connection piece to rise and fall.

[0007] Furthermore, the lifting drive assembly includes a lifting motor, a lifting drum installed on the output shaft of the lifting motor, and a transmission bar wound on the lifting drum, and one end of the transmission bar is connected to the lifting connector.

[0008] Furthermore, the auxiliary lifting mechanism also includes an auxiliary lifting frame, the lifting motor is installed on the auxiliary lifting frame, and the lifting drive assembly also includes a fixed steering wheel installed at one end of the auxiliary lifting frame, one end of the transmission bar passes around the fixed steering wheel and is connected to the lifting connecting piece; and the other end of the auxiliary lifting frame is provided with an auxiliary counterweight block.

[0009] Furthermore, a rotation drive unit is provided at the other end of the main hoisting beam, the auxiliary hoisting mechanism is connected to the rotation drive unit, and the rotation drive unit can drive the auxiliary hoisting mechanism to rotate.

[0010] Furthermore, the lifting connection member includes a lifting support member and a binding rope, and U-shaped grooves are provided at both ends of the lifting support member. The two ends of the binding rope are respectively connected to the threaded shafts of two locking bolts, and the threaded shafts of the two locking bolts are respectively embedded in the two U-shaped grooves of the lifting support member, and the nuts of the two locking bolts are respectively threadedly matched with the threaded shafts of the two locking bolts, and the nuts of the two locking bolts are respectively clamped with the end faces of the two U-shaped grooves, and a lifting cavity is formed between the binding rope and the lifting support member, and the lifting cavity is used to accommodate the components to be lifted.

[0011] Furthermore, a groove is provided in the middle of the hoisting support, and the hoisting cavity is formed between the inner wall of the groove and the binding rope.

[0012] Furthermore, a mounting frame is provided on the main counterweight block, a pulley is provided on the mounting frame, the pulley cooperates with a guide rail provided on the main lifting beam, and an adjusting nut is provided on the mounting frame, the adjusting nut cooperates with a screw thread, and the screw is connected to an adjusting motor installed on the main lifting beam.

[0013] As described above, the equipment maintenance lifting tooling according to the present invention has the following beneficial effects:

[0014] During the overhaul of the equipment, when it is necessary to lift the corresponding parts on the equipment, the lifting part on the main lifting beam is connected to the lifting equipment such as the crane, and the lifting equipment drives the entire equipment maintenance lifting fixture to move until the auxiliary lifting mechanism of the equipment maintenance lifting fixture moves to the position corresponding to the equipment part to be repaired, and the lifting connector of the auxiliary lifting mechanism is connected to the equipment part to be repaired, and the auxiliary lifting mechanism lifts the removed parts, and under the balancing action of the main counterweight block, the main lifting beam is prevented from tipping over due to unbalanced force, and then the lifting equipment can move horizontally from a small space to a larger space by driving the main lifting beam, the auxiliary lifting mechanism and the removed parts, and then drive the removed parts to the set position. The hoisting method utilizes the balancing effect of the main counterweight block located at one end of the main hoisting beam, so that the hoisting equipment can directly lift the hoisting part on the main hoisting beam, and then the corresponding parts can be stably hoisted through the auxiliary hoisting mechanism located at the other end of the main hoisting beam, and then the parts can be moved out of the narrow space by translation and other methods. The hook of the hoisting equipment does not need to be directly connected to the parts to be repaired by downward means. The hook of the hoisting equipment only needs to be connected to the hoisting part on the main hoisting beam, and the position of the hoisting part can be designed to be in an unobstructed position above according to actual conditions to ensure that the hook of the hoisting equipment can be directly connected to the hoisting part, thereby solving the problem that the parts to be repaired cannot be directly hoisted by the hoisting equipment when the parts are blocked above. Moreover, this operation method reduces the labor intensity of the operators, reduces the difficulty of operation, saves manpower and material resources, and greatly improves the safety and efficiency of the operation.

[0015] Another technical problem to be solved by the present invention is to provide a hoisting method which can reduce labor intensity and improve operation safety and operation efficiency.

[0016] To achieve the above object, the present invention provides a hoisting method using the equipment maintenance hoisting tool, comprising the following steps:

[0017] Connect the lifting equipment with the lifting part on the main lifting beam, and the lifting equipment drives the lifting tooling for equipment maintenance to move until the auxiliary lifting mechanism moves to the position corresponding to the part to be repaired of the equipment to be repaired;

[0018] Connect the lifting connector of the auxiliary lifting mechanism to the component to be repaired;

[0019] The lifting equipment applies a lifting force to the main lifting beam through the lifting part. At the same time, the two ends of the main lifting beam bear the gravity of the main counterweight block and the gravity of the parts to be inspected respectively, and the main lifting beam remains balanced. The lifting equipment drives the parts to be inspected to move horizontally to the set position through the main lifting beam, thereby moving the parts to be inspected out of the corresponding space.

[0020] As described above, the hoisting method according to the present invention has the following beneficial effects:

[0021] This hoisting method utilizes the balancing effect of the main counterweight block located at one end of the main hoisting beam, so that the hoisting equipment directly lifts the hoisting part on the main hoisting beam, and can stably lift the corresponding components through the auxiliary hoisting mechanism located at the other end of the main hoisting beam, so that the components can be moved out of the corresponding space by translation. In this way, the hoisting equipment does not need to be directly connected to the components to be repaired, and meets the needs of hoisting and transporting the components to be repaired in a narrow space with obstacles above. In addition, this operation method reduces the labor intensity of the operators, reduces the difficulty of the operation, saves manpower and material resources, and greatly improves the safety and efficiency of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the main counterweight block installed on the main lifting beam in the first embodiment of the present invention.

[0023] Figure 2 It is a structural schematic diagram of the auxiliary lifting mechanism in the first embodiment of the present invention.

[0024] Figure 3 It is a left view of the auxiliary lifting mechanism in the first embodiment of the present invention.

[0025] Figure 4 It is a structural schematic diagram of the lifting connection member in the first embodiment of the present invention.

[0026] Figure 5 It is a structural schematic diagram of the auxiliary lifting mechanism in the second embodiment of the present invention.

[0027] Component number description

[0028] 1 Main hoisting beam 318 groove

[0029] 11 Hoisting unit 32 Lifting drive assembly

[0030] 111 Lifting piece 321 Lifting motor

[0031] 2 Main counterweight 322 Lifting drum

[0032] 21 Mounting frame 323 Transmission bar

[0033] 22 pulley 324 fixed steering wheel

[0034] 23 screw rod 33 auxiliary hanging bracket

[0035] 3 Auxiliary lifting mechanism 331 Auxiliary lifting beam

[0036] 31 Lifting connector 332 Support plate

[0037] 311 Lifting support 333 Side beam

[0038] 312 Binding rope 34 Counterweight

[0039] 313 U-shaped groove 35 rod body

[0040] 314 Locking bolt 4 Rotating drive unit

[0041] 315 Threaded shaft 61 First flange

[0042] 316 Nut 62 Second flange

[0043] 317 Hoisting cavity 7 Rolling mill five-roll straightening roller DETAILED DESCRIPTION

[0044] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0045] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change in the proportion relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0046] Embodiment 1

[0047] like Figures 1 to 4As shown, this embodiment provides a lifting tool for equipment maintenance, including a main lifting beam 1, a main counterweight block 2 installed at one end of the main lifting beam 1, and an auxiliary lifting mechanism 3 installed at the other end of the main lifting beam 1, the auxiliary lifting mechanism 3 includes a lifting connector 31, the lifting connector 31 is used to connect with the component to be lifted, the main lifting beam 1 is provided with a lifting part 11, and the lifting part 11 is used to connect with the lifting equipment. During the maintenance of the equipment, when it is necessary to lift the corresponding parts on the equipment, the lifting part 11 on the main lifting beam 1 is connected to the lifting equipment such as the crane, and the lifting equipment drives the entire equipment maintenance lifting tool to move until the auxiliary lifting mechanism 3 of the equipment maintenance lifting tool moves to the position corresponding to the equipment part to be repaired, and the lifting connector 31 of the auxiliary lifting mechanism 3 is connected to the equipment part to be repaired, and the auxiliary lifting mechanism 3 lifts the removed parts, and under the balancing action of the main counterweight block 2, the main lifting beam 1 is prevented from tipping over due to unbalanced force, and then the lifting equipment can drive the main lifting beam 1, the auxiliary lifting mechanism 3 and the removed parts to move horizontally from a small space to a larger space, and then drive the removed parts to move to the set position; this kind of lifting The installation method utilizes the balancing effect of the main counterweight block 2 located at one end of the main lifting beam 1, so that the lifting equipment can directly lift the lifting part 11 on the main lifting beam 1, and can smoothly lift the corresponding components through the auxiliary lifting mechanism 3 located at the other end of the main lifting beam 1, and then the components can be moved out of the narrow space by translation or the like. The hook of the lifting equipment does not need to be directly connected to the component to be repaired in a downward manner. The hook of the lifting equipment only needs to be connected to the lifting part 11 on the main lifting beam 1, and the position of the lifting part 11 can be designed to be in an unobstructed position above according to actual conditions to ensure that the hook of the lifting equipment can be directly connected to the lifting part 11, thereby solving the problem that the component to be repaired cannot be directly lifted by the lifting equipment when the top is blocked.

[0048] At the same time, this embodiment provides a hoisting method using the equipment maintenance hoisting tool, comprising the following steps:

[0049] Connect the lifting equipment to the lifting part 11 on the main lifting beam 1, and the lifting equipment drives the lifting tool for equipment maintenance to move until the auxiliary lifting mechanism 3 moves to the position corresponding to the part to be repaired of the equipment to be repaired;

[0050] Connect the lifting connector 31 of the auxiliary lifting mechanism 3 to the component to be repaired;

[0051] The lifting equipment applies a lifting force to the main lifting beam 1 through the lifting part 11. At the same time, the two ends of the main lifting beam 1 bear the gravity of the main counterweight block 2 and the gravity of the component to be inspected respectively, and the main lifting beam 1 remains balanced; the lifting equipment drives the component to be inspected to move horizontally to the set position through the main lifting beam 1, so as to move the component to be inspected out of the corresponding space.

[0052] This lifting method utilizes the balancing effect of the main counterweight block 2 located at one end of the main lifting beam 1, so that the lifting equipment can directly lift the lifting part 11 on the main lifting beam 1, and can stably lift the corresponding components through the auxiliary lifting mechanism 3 located at the other end of the main lifting beam 1, so that the components can be moved out of the corresponding space by translation. In this way, the lifting equipment does not need to be directly connected to the components to be repaired, which meets the needs of lifting and transporting the components to be repaired that are located in a narrow space and have obstacles above.

[0053] In this embodiment, the auxiliary hoisting mechanism 3 is connected to the main hoisting beam 1 through a detachable connection structure. In this way, in the process of hoisting corresponding components, the auxiliary hoisting mechanism 3 of different structural forms can be replaced to connect with the main hoisting beam 1 to meet the needs of hoisting different components, making the use of this hoisting tool more flexible.

[0054] like Figure 2 As shown, in this embodiment, the auxiliary lifting mechanism 3 also includes a lifting drive component 32, which is connected to the lifting connector 31, and the lifting drive component 32 can drive the lifting connector 31 to rise and fall. After the lifting connector 31 is connected to the part to be repaired of the equipment, the lifting connector 31 can be driven to rise and fall by the lifting drive component 32, so as to drive the part to be repaired to rise and fall, and then the lifting equipment can be used to drive the entire lifting tool and the part to be repaired to move horizontally, etc., so as to improve the lifting flexibility. Specifically, as Figure 2 As shown, in this embodiment, the lifting drive assembly 32 includes a lifting motor 321, a lifting drum 322 installed on the output shaft of the lifting motor 321, and a transmission bar 323 wound on the lifting drum 322, and one end of the transmission bar 323 is connected to the lifting connector 31. The lifting motor 321 drives the lifting drum 322 to rotate, thereby realizing the retraction and extension of the transmission bar 323, thereby realizing the lifting and lowering of the lifting connector 31 and the component to be repaired. Figure 2As shown, in this embodiment, the secondary hoisting mechanism 3 also includes a secondary hoisting frame 33, a lifting motor 321 is installed on the secondary hoisting frame 33, and the lifting drive assembly 32 also includes a fixed steering wheel 324 installed at one end of the secondary hoisting frame 33, and one end of the transmission bar 323 is connected to the lifting connector 31 after passing through the fixed steering wheel 324; and the other end of the secondary hoisting frame 33 is provided with a secondary counterweight block 34. The lifting motor 321 is installed at the middle of the secondary hoisting frame 33. In this embodiment, the stability of the secondary hoisting mechanism 3 is higher. In this embodiment, there are two groups of lifting drive assemblies 32, and one end of the transmission bar 323 of the two groups of lifting drive assemblies 32 is respectively connected to two lifting connectors 31, and the two lifting connectors 31 respectively lift two different parts of the component to be repaired to improve the stability of lifting. In this embodiment, the lifting drive assembly 32 is an electric winch. In this embodiment, the fixed steering wheel 324 is specifically a sprocket, and the transmission bar 323 is a chain, and the chain is meshed with the sprocket.

[0055] At the same time, in this embodiment, a rotation drive unit 4 is provided at the other end of the main hoisting beam 1, and the auxiliary hoisting mechanism 3 is connected to the rotation drive unit 4. The rotation drive unit 4 can drive the auxiliary hoisting mechanism 3 to rotate, thereby improving the hoisting flexibility. Specifically, the rotation drive unit 4 is connected to the auxiliary hoisting frame 33. In this embodiment, the rotation drive unit 4 can drive the fixed steering wheel 324 to rise and fall by driving the auxiliary hoisting frame 33 to rotate, thereby driving the hoisting connector 31 and the components to be repaired to rise and fall. In this embodiment, the lifting drive assembly 32 and the rotation drive unit 4 are used to realize a two-stage lifting and lowering hoisting method for the components to be repaired, and can drive the components to be repaired to perform a certain translation, thereby improving the hoisting flexibility, so as to ensure that after the components to be repaired pass the corresponding obstacles in the up and down directions, the entire hoisting tooling and the components to be repaired are driven by the lifting equipment to translate, thereby being able to move the components to be repaired out of the narrow space. In this embodiment, the rotation drive unit 4 can drive the auxiliary hoisting mechanism 3 to rotate 360 ​​degrees as a whole.

[0056] like Figure 4As shown, in this embodiment, the lifting connection member 31 includes a lifting support member 311 and a binding rope 312. U-shaped grooves 313 are provided at both ends of the lifting support member 311. Both ends of the binding rope 312 are respectively connected to the threaded shafts 315 of the two locking bolts 314, and the threaded shafts 315 of the two locking bolts 314 are respectively embedded in the two U-shaped grooves 313 of the lifting support member 311. The nuts 316 of the two locking bolts 314 are respectively threadedly matched with the threaded shafts 315 of the two locking bolts 314, and the nuts 316 of the two locking bolts 314 are respectively clamped with the end faces of the two U-shaped grooves 313. A lifting cavity 317 is formed between the binding rope 312 and the lifting support member 311, and the lifting cavity 317 is used to accommodate the components to be lifted. During the hoisting process, the binding rope 312 is passed around the part to be repaired, and the two threaded shafts 315 connected to the two ends of the binding rope 312 are respectively embedded in the two U-shaped grooves 313, and then the two nuts 316 are respectively installed on the two threaded shafts 315, and the two nuts 316 are respectively engaged with the end faces of the U-shaped grooves 313, so that the part to be repaired is tied to the lifting support 311. At this time, the part to be repaired is located in the lifting cavity 317, and the part to be repaired can be lifted by the lifting connector 31. A groove 318 is provided in the middle of the lifting support 311, and a lifting cavity 317 is formed between the inner wall of the groove 318 and the binding rope 312. When the binding rope 312 is used to bind the part to be repaired, a part of the part to be repaired will be embedded in the groove 318, and the groove 318 has a certain limiting effect on the part to be repaired. In this embodiment, the lifting connector 31 can achieve rapid docking. The connecting piece at the middle of the lifting support 311 is connected to the transmission bar 323 through a lifting wire rope. In this embodiment, the locking bolt 314 is specifically a fisheye bolt. The binding rope 312 is specifically a binding wire rope, which is connected to the lower part of the fisheye bolt. The lifting wire rope can enter through the U-shaped groove 313 on the side of the lifting connector 31, and then be fixed inside to achieve rapid installation and docking.

[0057] In this embodiment, the lifting support 311 of the lifting connector 31 is a semicircular metal component. A plastic layer is provided on the inner wall of the groove 318 of the lifting support 311, and the surface of the binding wire rope is wrapped with protective glue. When the component to be inspected is bundled in the lifting connector 31, the plastic layer and the protective glue are in contact with the component to be inspected to avoid damage to the component to be inspected.

[0058] like Figure 1As shown, in this embodiment, a mounting frame 21 is provided on the main counterweight 2, and a pulley 22 is provided on the mounting frame 21. The pulley 22 cooperates with the guide rail provided on the main hoisting beam 1, and an adjusting nut is provided on the mounting frame 21. The adjusting nut is threadedly matched with a screw rod 23, and the screw rod 23 is connected to an adjusting motor installed on the main hoisting beam 1. During the hoisting process, the adjusting motor is started, and the mounting frame 21 and the main counterweight 2 will be driven to move along the screw rod 23 through the screw rod 23 and the adjusting nut. At the same time, the pulley 22 will slide along the guide rail of the main hoisting beam 1 to adjust the position of the main counterweight 2 to meet more balance requirements.

[0059] like Figure 1 As shown, in this embodiment, the hoisting part 11 includes a hoisting piece 111 with a hoisting hole. By hooking the hook of the hoisting equipment in the hoisting hole, the main hoisting beam 1 can be hoisted by the hoisting equipment, and the operation is simple. In this embodiment, a plurality of hoisting pieces 111 are fixed on the main hoisting beam 1. Among them, there are four hoisting pieces 111 fixed at the upper end of the main hoisting beam 1, and the four hoisting pieces 111 are distributed at intervals along the length direction of the main hoisting beam 1; and there are two hoisting pieces 111 fixed at the lower end of the main hoisting beam 1, and the two hoisting pieces 111 are distributed at intervals along the length direction of the main hoisting beam 1. During the hoisting operation, the corresponding hoisting piece 111 can be selected to be connected to the hoisting equipment according to the weight, position and other characteristics of the parts to be hoisted. During the hoisting process, when the main hoisting beam 1 is in a balanced state, the hoisting piece 111 selected to be connected to the hoisting equipment is located between the main counterweight block 2 and the auxiliary hoisting mechanism 3.

[0060] The equipment maintenance hoisting tool in this embodiment is mainly used for the maintenance of the five-roller straightening roller 7 of the rolling mill, especially for the replacement of the five-roller straightening roller 7 of the rolling mill during the maintenance of the cold rolling mill, and belongs to the technical field of mechanical equipment maintenance. That is, the part to be repaired in this embodiment is the five-roller straightening roller 7 of the rolling mill. By adopting this kind of hoisting tool, this embodiment can solve the problems of limited working space, no fixed hanging points inside, and easy collision with adjacent equipment encountered during the replacement of the five-roller straightening roller 7 of the rolling mill, avoid collision with adjacent equipment during the replacement operation, reduce the danger of personnel working in the narrow space of the rolling mill for a long time, and effectively improve the working efficiency, realize safe and fast operation, and can meet the maintenance needs of quickly replacing the five-roller straightening roller 7 of the rolling mill. It has a simple structure, is easy to use, and is safe and effective.

[0061] In this embodiment, the lifting fixture for equipment maintenance is designed and manufactured in consideration of the convenience of use and personnel safety each time, and the lifting drive assembly 32 and the rotation drive unit 4 for electric lifting of the roller are designed, so as to use the lifting drive assembly 32 and the rotation drive unit 4 to realize the lifting of the roller, and ensure that the roller passes over the obstacles such as the archway of the cold rolling mill in the height direction, and then the entire lifting fixture and the roller can be driven to move horizontally through the lifting equipment such as the crane to move the roller out of the narrow space, without too much manual lifting operation, which is more time-saving and labor-saving. In addition, the entire lifting fixture is lifted by the crane and then transported to the work position, without the need to build a lifting point on the cold rolling mill unit.

[0062] In this embodiment, the main hoisting beam 1 is the main load-bearing part of this hoisting tool, and a scale is set on the main hoisting beam 1, and the scale is marked with scale lines to clarify the actual weight that can be lifted when the main counterweight 2 moves to the corresponding position. In this embodiment, the two hoisting pieces 111 on the left side of the main hoisting beam 1 are used for lifting the five-roller straightening roller 7 of the rolling mill, and the other hoisting pieces 111 are used to connect with the crane when lifting other components. In other embodiments, other forms of auxiliary hoisting mechanisms 3 can be replaced to be able to lift other components, so that the use of this hoisting tool is wider. In this embodiment, when the main hoisting beam 1 is used alone, the lifting capacity is designed to be 5T, which can meet the lifting requirements of most components in the steel plant. In this embodiment, the front end of the auxiliary hoisting mechanism 3 is detachably connected to the main hoisting beam 1 through the rotating drive unit 4. At this time, the auxiliary hoisting mechanism 3 is located behind the main hoisting beam 1, and can realize the removal and installation of the rollers at the exit roller table of the cold rolling mill. When necessary, the relative positions of the main hoisting beam 1 and the auxiliary hoisting mechanism 3 in this embodiment can be interchanged, and the auxiliary hoisting mechanism 3 can be removed, and the main hoisting beam 1 can be rotated 180 degrees, and then the rear end of the auxiliary hoisting mechanism 3 can be detachably connected to the main hoisting beam 1 through the rotation drive unit 4. At this time, the auxiliary hoisting mechanism 3 is located in front of the main hoisting beam 1, and the rollers at the entrance roller table of the cold rolling mill can be removed and installed. In this embodiment, the detachable connection structure between the main hoisting beam 1 and the auxiliary hoisting mechanism 3 includes a first flange 61 fixedly connected to the end of the main hoisting beam 1, a second flange 62 fixedly connected to the end of the auxiliary hoisting frame 33 of the auxiliary hoisting mechanism 3, and two rotation connection flanges respectively arranged at the two ends of the rotation drive unit 4, wherein there are two second flanges 62, and the two second flanges 62 are respectively fixed at the front and rear ends of the auxiliary hoisting frame 33. The rotating connection flange at one end of the rotating drive unit 4 is fixedly connected to the first flange 61 by bolts, and the rotating connection flange at the other end of the rotating drive unit 4 is fixedly connected to the second flange 62 located in the front by bolts, so as to realize the detachable connection between the main lifting beam 1 and the auxiliary lifting mechanism 3, and at this time, the auxiliary lifting mechanism 3 is located behind the main lifting beam 1, which is used to realize the removal and installation of the rollers at the exit roller. When it is necessary to remove and install the rollers at the inlet roller, disconnect the connection between the second flange 62 and the rotating connection flange, rotate the main lifting beam 1 and the rotating drive unit 4 180 degrees, move the auxiliary lifting mechanism 3 to the front, and then connect another second flange 62 to the rotating connection flange to realize the installation of the auxiliary lifting mechanism 3 in front of the main lifting beam 1, which can be used to remove and install the rollers at the inlet roller.

[0063] like Figure 2As shown, in this embodiment, the auxiliary hoisting frame 33 includes an auxiliary hoisting crossbeam 331, a plurality of support plates 332 fixed on the auxiliary hoisting crossbeam 331, and a side beam 333 fixedly connected to one end of all the support plates 332, two fixed steering wheels 324 are installed on the side beam 333, and the auxiliary counterweight block 34 is fixedly connected to the other end of all the support plates 332. The middle part of all the support plates 332 is fixedly connected to the auxiliary hoisting crossbeam 331. Two second flanges 62 are respectively fixed at both ends of the auxiliary hoisting crossbeam 331. Two lifting motors 321 are installed on the auxiliary hoisting crossbeam 331.

[0064] In this embodiment, the auxiliary hoisting mechanism 3 is installed on the main hoisting beam 1 through the above-mentioned detachable structure, which is also convenient for quickly replacing the auxiliary hoisting mechanism 3 when needed. Under the driving action of the rotation drive unit 4, the auxiliary hoisting mechanism 3 rotates continuously. At the same time, due to the deadweight of the roller, the roller can be guaranteed to rotate freely, so as to ensure that when the auxiliary hoisting mechanism 3 rotates, the five-roller straightening roller 7 of the rolling mill can rise and fall vertically, and the lifting height is guaranteed to be not less than 250mm. In addition, in this embodiment, the length of the five-roller straightening roller 7 of the rolling mill is 2.4m, and the spacing between the two sets of lifting drive components 32 is 1.5m, so as to ensure that the five-roller straightening roller 7 of the rolling mill can be lifted more smoothly and safely by using the two sets of lifting drive components 32.

[0065] In this embodiment, the main counterweight 2 is mainly used to ensure the overall balance during the roller hoisting process. In this embodiment, the main counterweight 2 is driven by an adjusting motor, and the control method can be manual or remote control. In this embodiment, an arrow mark is provided on the main counterweight 2, and the arrow mark is combined with the scale ruler on the main hoisting beam 1 to indicate the actual weight that can be lifted when the main counterweight 2 moves to the current position. The main counterweight 2 is a detachable structure, and the counterweight can be increased or decreased. Specifically, the main counterweight 2 includes a plurality of counterweight plates, and all the counterweight plates are connected by bolts. In actual use, it is convenient to increase or decrease the number of counterweight plates, thereby realizing the adjustment of the overall weight of the main counterweight 2. In addition, the auxiliary counterweight 34 of this embodiment is located on one side of the auxiliary hoisting beam 331, and can play a role in counterweight balance during the rotation of the auxiliary hoisting mechanism 3.

[0066] In this embodiment, the lifting method of the equipment maintenance lifting tool is adopted to replace the five-roll straightening roll 7 of the cold rolling mill, which specifically includes the following steps:

[0067] Use a crane to assemble the lifting equipment for equipment maintenance;

[0068] Connect the equipment maintenance hoisting tool to the power supply, adjust the motor to start, and drive the main counterweight block 2 to slide along the guide rail of the main hoisting beam 1 until the entire hoisting tool is in a horizontal balance state;

[0069] The crane is connected with the hoisting part 11 on the main hoisting beam 1, and the whole hoisting tool is lifted and moved to the rolling mill platform, and the tool is adjusted so that the hoisting tool is horizontally moved from the operation side of the cold rolling mill entrance to above the position of the five-roll straightening roller;

[0070] The maintenance personnel enter the cold rolling mill entrance, set and fix the lifting connector 31 on the five-roll straightening roller 7 of the rolling mill, and then leave the working range;

[0071] The lifting motor 321 is started, and the lifting drive assembly 32 drives the five-roller straightening roller to lift vertically upward to a height of more than 260 mm, and the five-roller straightening roller is separated from the bearing seat, and the position of the main counterweight block 2 is continuously adjusted to ensure that the entire tooling remains balanced;

[0072] The rotary drive unit 4 is started to drive the auxiliary hoisting mechanism 3 to rotate, so as to further raise the height of the five-roller straightening roller, so that the height of the five-roller straightening roller exceeds the archway;

[0073] The crane drives the entire tooling to move horizontally until the five-roller straightening roller is moved out as a whole, and the five-roller straightening roller is transported to the set position;

[0074] Remove the old five-roller straightening roller from the lifting connection piece 31, and install the new five-roller straightening roller in the lifting connection piece 31;

[0075] The crane drives the lifting fixture carrying the new five-roller straightening roll to move, and moves the fixture and the five-roller straightening roll horizontally from the operating side of the cold rolling mill entrance to the installation position of the five-roller straightening roll;

[0076] The rotary drive unit 4 starts to drive the auxiliary hoisting mechanism 3 to rotate, so as to adjust the new five-roller straightening roller to be just above the bearing seat;

[0077] The lifting motor 321 is started to lower the new five-roller straightening roller vertically until the five-roller straightening roller falls into the bearing seat;

[0078] The maintenance personnel enter the cold rolling mill entrance, disassemble the lifting connector 31 on the five-roller straightening roller, and disconnect the connection between the five-roller straightening roller and the lifting drive assembly 32;

[0079] The lifting motor 321 is started to retract the chain;

[0080] The crane drives the entire lifting tooling to move horizontally out of the cold rolling mill, the entire five-roll straightening roll replacement operation is completed, and the five-roll straightening roll maintenance work of the cold rolling mill is realized.

[0081] In the present embodiment, during the process of replacing the five-roller straightening roller by using the equipment maintenance hoisting tool, the lifting and rotation are all electrically operated, and the maintenance personnel only need to enter the inside of the mill entrance to perform the binding operation, which effectively reduces the time for the maintenance personnel to work in the narrow space of the mill entrance and increases the safety factor during the operation. In addition, during the replacement operation, the roller is no longer hoisted by a hand chain hoist or manually applied horizontal force. Instead, the roller is driven vertically out of the bearing seat by the lifting drive assembly 32, which avoids squeezing and bumping the bearing seat, and also avoids the maintenance personnel being injured or bumping into other equipment due to the roller losing balance. The auxiliary counterweight block 34 provided on the auxiliary hoisting mechanism 3 in the present embodiment ensures that the roller will not scratch other parts on the adjacent equipment when it moves forward smoothly after lifting, ensuring the safety of the adjacent parts and reducing the difficulty of the entire maintenance operation. Originally, it took 6 people 12 hours to complete the replacement of the five-roller straightening roller, but in the present embodiment, it only takes 4 people 3 hours to complete the replacement of the five-roller straightening roller by using the equipment maintenance hoisting tool, which effectively shortens the operation time and saves maintenance costs.

[0082] Embodiment 2

[0083] In this embodiment, there is no need to hoist the straightening roller. Therefore, based on the above-mentioned embodiment 1, the rotary drive unit 4 and the auxiliary hoisting mechanism 3 specifically used for hoisting the straightening roller are removed, and the auxiliary hoisting mechanism 3 used in this embodiment is replaced.

[0084] like Figure 5 As shown, in this embodiment, the auxiliary lifting mechanism 3 includes a rod body 35 and two lifting connectors 31 arranged at the lower end of the rod body 35, and the lifting connectors 31 are provided with auxiliary lifting holes. In this embodiment, the length of the rod body 35 is 1.5m. The lifting capacity of the lifting tool in this embodiment is designed to be 3T. In this embodiment, a second flange 62 is fixed to the end of the rod body 35. By connecting the second flange 62 at the end of the rod body 35 with the first flange 61 at the end of the main lifting beam 1, the auxiliary lifting mechanism 3 in this embodiment is installed on the main lifting beam 1.

[0085] In summary, the present invention effectively overcomes various shortcomings of the prior art and has high industrial utilization value.

[0086] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A lifting tool for equipment maintenance, characterized in that: The invention comprises a main lifting beam (1), a main counterweight (2) installed at one end of the main lifting beam (1), and a secondary lifting mechanism (3) installed at the other end of the main lifting beam (1), wherein the secondary lifting mechanism (3) comprises a lifting connection piece (31), wherein the lifting connection piece (31) is used to be connected to a component to be lifted, and the main lifting beam (1) is provided with a lifting part (11), wherein the lifting part (11) is used to be connected to a lifting device.

2. The equipment maintenance lifting tool according to claim 1 is characterized in that: The auxiliary lifting mechanism (3) is connected to the main lifting crossbeam (1) via a detachable connection structure.

3. The equipment maintenance lifting tool according to claim 1 is characterized in that: The auxiliary lifting mechanism (3) further comprises a lifting drive component (32), wherein the lifting drive component (32) is connected to the lifting connection component (31), and the lifting drive component (32) can drive the lifting connection component (31) to rise and fall.

4. The equipment maintenance lifting tool according to claim 3 is characterized in that: The lifting drive assembly (32) comprises a lifting motor (321), a lifting drum (322) mounted on an output shaft of the lifting motor (321), and a transmission bar (323) wound around the lifting drum (322), one end of the transmission bar (323) being connected to the lifting connector (31).

5. The equipment maintenance lifting tool according to claim 4 is characterized in that: The auxiliary lifting mechanism (3) also includes an auxiliary lifting frame (33), the lifting motor (321) is mounted on the auxiliary lifting frame (33), the lifting drive assembly (32) also includes a fixed steering wheel (324) mounted at one end of the auxiliary lifting frame (33), one end of the transmission bar (323) passes around the fixed steering wheel (324) and is connected to the lifting connection piece (31); and the other end of the auxiliary lifting frame (33) is provided with an auxiliary counterweight block (34).

6. The equipment maintenance lifting tool according to claim 1 is characterized in that: A rotation drive unit (4) is provided at the other end of the main hoisting crossbeam (1), the auxiliary hoisting mechanism (3) is connected to the rotation drive unit (4), and the rotation drive unit (4) can drive the auxiliary hoisting mechanism (3) to rotate.

7. The equipment maintenance lifting tool according to claim 1 is characterized in that: The hoisting connection piece (31) comprises a hoisting support piece (311) and a binding rope (312); U-shaped grooves (313) are provided at both ends of the hoisting support piece (311); both ends of the binding rope (312) are respectively connected to the threaded shafts (315) of two locking bolts (314); the threaded shafts (315) of the two locking bolts (314) are respectively embedded in the two U-shaped grooves (313) of the hoisting support piece (311); the nuts (316) of the two locking bolts (314) are respectively threadedly matched with the threaded shafts (315) of the two locking bolts (314); and the nuts (316) of the two locking bolts (314) are respectively clamped with the end faces of the two U-shaped grooves (313); a hoisting cavity (317) is formed between the binding rope (312) and the hoisting support piece (311); and the hoisting cavity (317) is used to accommodate the components to be hoisted.

8. The equipment maintenance lifting tool according to claim 7 is characterized in that: A groove (318) is provided in the middle of the hanging support (311), and the hanging cavity (317) is formed between the inner wall of the groove (318) and the binding rope (312).

9. The equipment maintenance lifting tool according to claim 1 is characterized in that: The main counterweight block (2) is provided with a mounting frame (21), the mounting frame (21) is provided with a pulley (22), the pulley (22) is matched with a guide rail provided on the main lifting beam (1), and the mounting frame (21) is provided with an adjusting nut, the adjusting nut is threadably matched with a screw rod (23), and the screw rod (23) is connected to an adjusting motor installed on the main lifting beam (1).

10. A hoisting method using the equipment maintenance hoisting tool as claimed in claim 1, characterized in that: The steps include: The lifting device is connected to the lifting part (11) on the main lifting beam (1), and the lifting device drives the lifting tool for equipment maintenance to move until the auxiliary lifting mechanism (3) moves to a position corresponding to the part to be repaired of the equipment to be repaired; Connecting the lifting connector (31) of the auxiliary lifting mechanism (3) to the component to be repaired; The lifting equipment applies a lifting force to the main lifting beam (1) through the lifting part (11), and at the same time, the two ends of the main lifting beam (1) bear the gravity of the main counterweight block (2) and the gravity of the component to be repaired respectively, and the main lifting beam (1) maintains balance; the lifting equipment drives the component to be repaired to move horizontally to a set position through the main lifting beam (1), so as to move the component to be repaired out of the corresponding space.

Images