Core shaft replacement tool and method

Abstract

The invention discloses a mandrel replacement tool and method, the mandrel replacement tool comprises a vehicle body, a limiting part and a locking part, the limiting part is assembled on the vehicle body so that a bearing space can be formed between the limiting part and the vehicle body, the locking part is detachably assembled on the limiting part so that a mandrel can be limited and fixed in the bearing space, and the locking part is detachably assembled on the limiting part. The replacement method comprises the following steps: disassembling parts related to an original mandrel; the mandrel replacement tool is hoisted to the position below the original mandrel; the original core shaft is arranged in the bearing space and is locked and fixed through the locking piece; the original mandrel is hoisted to a preset position and detached; and the new mandrel is fixed in the bearing space through the locking piece and hoisted to the position of the original mandrel to be installed. According to the mandrel replacement tool and method, the mandrel can be conveniently fixed, the replacement efficiency is improved, and the replacement safety is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of metallurgical industry, in particular to a mandrel replacement tool and method. BACKGROUND

[0002] In the pickling and tempering line of the metallurgical industry, the mandrel of the uncoiler is the core component to ensure the normal operation of the production line. Its main function is to provide power transmission for the uncoiling operation and ensure the smooth unwinding of the steel strip into the subsequent processing flow.

[0003] Due to the long-term working state of high strength and high load, the mandrel needs to be replaced regularly to maintain the performance of the equipment. Therefore, the maintenance and replacement of the mandrel require frequent high-altitude hoisting and manual operation to complete the disassembly and installation of the mandrel.

[0004] During the hoisting of the mandrel, complicated fixing steps are required to ensure the stability of the mandrel during hoisting. Therefore, it takes a long time to disassemble and the efficiency is low. SUMMARY

[0005] Therefore, the purpose of the present application is to provide a mandrel replacement tool and method, which facilitates the fixation of the mandrel, improves the efficiency during replacement, and has high safety during replacement.

[0006] The present application provides a mandrel replacement tool, which comprises a vehicle body, a limiting piece and a locking piece. The limiting piece is assembled on the vehicle body to form a bearing space with the vehicle body. The locking piece is detachably assembled on the limiting piece to fix the mandrel in the bearing space.

[0007] In an embodiment, the limiting piece comprises at least two limiting plates and a reinforcing rib. The two limiting plates are correspondingly arranged on both sides of the vehicle body, and the reinforcing rib connects the limiting plates and the vehicle body.

[0008] In an embodiment, the locking piece comprises an arc-shaped ring and a locking bolt. The arc-shaped ring is assembled and connected with the limiting piece through the locking bolt.

[0009] In an embodiment, the vehicle body comprises a frame, a bearing plate and a connecting plate. The bearing plate covers the hollow part of the frame.

[0010] The present application also provides a mandrel replacement method using the above-mentioned mandrel replacement tool, which comprises the following steps:

[0011] Disassemble the components related to the original mandrel;

[0012] Lift the mandrel replacement tool to the position below the original mandrel;

[0013] The original mandrel is placed in the bearing space and locked and fixed by the locking member;

[0014] Move the original mandrel to the preset position and remove it;

[0015] The new mandrel is secured in the bearing space using locking devices and then lifted to the position of the original mandrel for installation.

[0016] The mandrel replacement fixture and method provided by this invention facilitates the fixing of the mandrel, improves the efficiency of replacement, and ensures high safety during replacement. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the mandrel replacement fixture provided by the present invention.

[0019] Figure 2 This is a side view of the mandrel replacement fixture provided by the present invention. Detailed Implementation

[0020] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. Based on the description of the present invention, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present invention.

[0021] In the description of this invention, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0022] The terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use. They are only for the convenience of description and simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0023] The terms “first,” “second,” “third,” etc., are used merely to distinguish elements with similar properties, not to indicate or imply relative importance or a specific order.

[0024] The terms “include,” “comprising,” or any other variation thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0025] Example 1

[0026] Please see Figure 1 The spindle replacement fixture provided by the present invention includes a vehicle body 1, a limiting member 2 and a locking member 3. The limiting member 2 is assembled on the vehicle body 1 to form a bearing space between the limiting member 2 and the vehicle body 1. The locking member 3 is detachably assembled on the limiting member 2 to limit and fix the spindle within the bearing space.

[0027] Understandably, during disassembly, the upper winding trolley is fixedly connected to the car body 1. When replacing the original mandrel, the original mandrel needs to be removed first. During disassembly, the relevant components around the original mandrel can be removed first. Then, the upper winding trolley moves the car body 1 below the original mandrel. Then, the upper winding trolley lifts the car body 1 to a preset height, so that the original mandrel is located in the bearing space. Next, the original mandrel is locked in the bearing space by the locking member 3. The upper winding trolley moves the car body 1 to the spare parts area. The old mandrel is removed by the transport trolley. Then, the new mandrel is fixed in the bearing space by the locking member 3. The new mandrel is hoisted to the position of the original mandrel by the car body 1. Finally, the new mandrel is fixed in the original position. This tooling can be used for the construction of equipment such as the uncoiler of the pickling line and the continuous annealing line.

[0028] Please see Figure 1 In some embodiments, the limiting member 2 includes at least two limiting plates 201 and reinforcing ribs 202. The two limiting plates 201 are respectively disposed on both sides of the vehicle body 1, and the reinforcing ribs 202 connect the limiting plates 201 and the vehicle body 1.

[0029] It is known that the two limiting plates 201 are set in parallel and aligned, and the limiting plates 201 are welded obliquely to both sides of the vehicle body 1. A load-bearing space with a large opening at the top is formed between the two limiting plates 201 and the vehicle body 1. The reinforcing rib 202 can effectively improve the stability of the welding between the limiting plates 201 and the vehicle body 1.

[0030] Please see Figure 2 In some embodiments, the locking member 3 includes an arc ring and a locking bolt, and the arc ring is assembled and connected to the limiting member 2 through the locking bolt.

[0031] Understandably, the arc ring is fixed to the opening above the bearing space by locking bolts, thus effectively locking the mandrel. The arc ring can be connected to the limiting plate 201, and the locking part 3 of this structure facilitates fixing and locking.

[0032] Please see Figure 1 In some embodiments, the vehicle body includes a frame 101, a support plate 102, and a connecting plate 103. The support plate 102 covers the openings in the frame 101, and the connecting plate 103 is disposed at the lower part of the frame 101.

[0033] It is known that the frame 101 can be made of Q235B steel, and the bearing plate 102 can be made of 20mm thick Q345B steel plate to ensure the strength and stability of the tooling; the bearing plate 102 can be welded to the frame 101 to improve the stability of the frame 101, and the connecting plate 103 can be welded to the lower area of ​​the frame 101, and there can be two of them, which are symmetrically arranged to facilitate assembly and fixation with the upper winding trolley.

[0034] Example 2

[0035] This embodiment provides a mandrel replacement method, which uses the above-mentioned mandrel replacement fixture and includes the following steps:

[0036] S1, disassemble the original mandrel-related components.

[0037] Understandably, the preliminary preparations include: cleaning dust from all parts of the uncoiler gearbox; removing all electrical wiring and automation components and marking them; removing bolts and lubrication lines from all parts of the low-speed shaft gearbox and motor, and properly storing the disassembled parts; and lifting out the uncoiler motor and gearbox cover, so that the original mandrel is not in a fixed state.

[0038] S2, lift the mandrel replacement tool to below the original mandrel.

[0039] It is known that the tooling can be connected and fixed to the upper winding trolley. The upper winding trolley moves the car body directly below the upper winding trolley and directly below the original mandrel. The upper winding trolley raises the tooling to make it contact the mandrel.

[0040] S3, place the original mandrel in the bearing space and lock it in place using locking components.

[0041] It is known that the arc ring is connected to the limiting plate 201 by M18 bolts, and the tooling and mandrel are reinforced again by high-strength straps; the mandrel level can also be adjusted by jacks at the same time to ensure that the error is ≤±2mm; the upper winding trolley is raised to make the tooling support the original mandrel, and the original mandrel is transported out of the equipment area by using the tooling translation function.

[0042] S4, move the original spindle to the preset position and remove it.

[0043] It is known that an overhead crane can be used to lift the mandrel to the spare parts area.

[0044] S5. Secure the new mandrel in the bearing space using locking devices, and then hoist it to the position of the original mandrel for installation.

[0045] Understandably, the above fixing method can be repeated to fix the new mandrel and then lift it to the position of the original mandrel for installation and fixation. Alternatively, the mandrel's horizontal and vertical accuracy can be adjusted to ≤0.05 / 1000mm using a spirit level, level, and micrometer. After precise adjustment, the installation of the new mandrel is complete.

[0046] As can be seen from the above description, the mandrel replacement fixture and method provided by the present invention facilitates the fixing of the mandrel, improves the efficiency of replacement, and ensures high safety during replacement.

[0047] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A mandrel replacement fixture, characterized in that, It includes a vehicle body, a limiting component, and a locking component. The limiting component is assembled on the vehicle body to form a load-bearing space between itself and the vehicle body. The locking component is detachably assembled on the limiting component to limit and fix the spindle within the load-bearing space.

2. The mandrel replacement fixture as described in claim 1, characterized in that, The limiting component includes at least two limiting plates and reinforcing ribs. The two limiting plates are respectively disposed on both sides of the vehicle body, and the reinforcing ribs connect the limiting plates and the vehicle body.

3. The mandrel replacement fixture as described in claim 1, characterized in that, The locking component includes an arc ring and a locking bolt, and the arc ring is assembled and connected to the limiting component through the locking bolt.

4. The mandrel replacement fixture as described in claim 1, characterized in that, The vehicle body includes a frame, a support plate, and a connecting plate. The support plate covers the openings in the frame, the pulleys are mounted below the frame, and the connecting plate is located at the lower part of the frame.

5. A method for replacing a spindle, characterized in that, The spindle replacement fixture according to any one of claims 1 to 4 includes the following steps: Disassemble the original mandrel-related components; The mandrel replacement tool is lifted to a position below the original mandrel; The original mandrel is placed in the bearing space and locked and fixed by the locking member; Move the original mandrel to the preset position and remove it; The new mandrel is secured in the bearing space using locking devices and then lifted to the position of the original mandrel for installation.

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