A core package disassembling device with lossless function

Abstract

The present application belongs to the technical field of maintenance equipment, and particularly relates to a core package dismounting device with a nondestructive function, which comprises a mounting and positioning mechanism, a multi-screw uniform distribution driving mechanism, a synchronous linkage mechanism and a self-adaptive floating uniform load distribution mechanism; the mounting and positioning mechanism is mounted on the flange end face of an outer cylinder body, the multi-screw uniform distribution driving mechanism is mounted on the mounting and positioning mechanism, the synchronous linkage mechanism is connected with the multi-screw uniform distribution driving mechanism to drive the synchronous rotation of the multiple driving screws in the multi-screw uniform distribution driving mechanism, and the self-adaptive floating uniform load distribution mechanism is mounted between the multi-screw uniform distribution driving mechanism and the flange of the core package outlet end face to uniformly distribute the contact surface pressure of the core package outlet end face flange. The present application can realize the nondestructive extraction of the core package assembly from the outer cylinder body.

Description

Technical Field

[0001] This invention belongs to the field of maintenance equipment technology, and specifically relates to a core package disassembly device with non-destructive function. Background Technology

[0002] Multistage high-pressure double-cylinder centrifugal pumps are widely used in high-end industrial applications such as main feedwater systems of nuclear power plants, high-pressure circulation systems of petrochemical plants, and radioactive medium circulation systems of the nuclear industry. The pump core assembly includes precision components such as rotor, stator, impellers of each stage, guide vanes, interstage seals, and bearings. After a certain operating cycle, it must be completely removed for overhaul or replacement. There is a precision clearance mating surface between the core and the inner bore of the outer cylinder, with a mating length of more than 1000mm. After the equipment ages, the friction of the mating surface increases sharply due to corrosion, deformation, etc., and the typical axial pull-out force can reach 30kN to 100kN. Core disassembly is the riskiest part of the maintenance operation. Existing methods for disassembling core packages mainly include manual multi-person pulling, hydraulic puller single-point ejection, and disassembly using specialized core-pulling devices, but they all share the following common drawbacks: The synchronization of displacement cannot be verified. Existing technology has no means to quantitatively monitor and verify the actual displacement of each force application point. Operators cannot obtain objective data. When the friction force in each area is uneven, it is impossible to detect and correct minor deviations in time. The lack of force sensing and overload protection means that operators cannot perceive the absolute value of the pulling force in real time during disassembly, and there is no overload protection mechanism to automatically cut off the force transmission. It relies entirely on subjective judgment, which is especially dangerous in the irradiated environment of a nuclear power plant. Summary of the Invention

[0003] The purpose of this invention is to provide a core package disassembly device with non-destructive function, which can realize the non-destructive extraction of the core package assembly from the outer cylinder.

[0004] Technical solution to achieve the purpose of this invention: A core package disassembly device with non-destructive function, the device includes an installation and positioning mechanism, a multi-screw uniformly distributed drive mechanism, a synchronous linkage mechanism, and an adaptive floating load-sharing mechanism; the installation and positioning mechanism is installed on the outer cylinder flange end face, the multi-screw uniformly distributed drive mechanism is installed on the installation and positioning mechanism, the synchronous linkage mechanism is connected to the multi-screw uniformly distributed drive mechanism to drive multiple drive screws in the multi-screw uniformly distributed drive mechanism to rotate synchronously, and the adaptive floating load-sharing mechanism is installed between the multi-screw uniformly distributed drive mechanism and the core package outlet end face flange to uniformly distribute the pressure on the contact surface of the core package outlet end face flange.

[0005] Furthermore, the installation and positioning mechanism includes a positioning frame, a positioning pin, and fastening bolts; the positioning frame is a ring-shaped rigid frame structure, the positioning frame is fitted into the outer diameter stop of the outer cylinder flange, the inner diameter matches the outer diameter stop of the outer cylinder flange, and the axis of the positioning frame is coaxial with the pump axis; the positioning pin passes through the positioning frame and is inserted into the positioning pin hole on the outer cylinder flange to achieve coaxial alignment between the device axis and the pump axis; the fastening bolts match the positioning pin to axially fix the positioning frame to the end face of the outer cylinder flange.

[0006] Furthermore, the multi-screw evenly distributed drive mechanism includes drive screws, drive nuts, and thrust bearings; four drive screws are evenly distributed along the circumference of the positioning frame, the drive screws are supported in corresponding holes in the positioning frame, and the axis of the drive screws is parallel to the pump axis; the drive nut matches the drive screws, the drive nut is fixed to the positioning frame, and is threadedly engaged with the corresponding drive screw; the thrust bearing is installed between the front end of the drive screw and the adaptive floating load-equalizing mechanism.

[0007] Furthermore, the synchronous linkage mechanism includes a synchronous drive chain, a drive sprocket, and a main drive handwheel; the drive sprocket is installed at the rear end of the drive screw; the synchronous drive chain connects the drive sprockets on the four drive screws, so that the four drive screws rotate synchronously; the main drive handwheel is fixedly installed on the drive chain, and the main drive handwheel drives the four drive sprockets to rotate synchronously at the same speed through the synchronous drive chain.

[0008] Furthermore, the adaptive floating load-equalizing mechanism includes a clamping connecting plate, a load-equalizing spherical pad, and an elastic pad layer; a thrust bearing is installed between the front end of the drive screw and the clamping connecting plate, the front of the clamping connecting plate is fixedly connected to the outlet flange of the core package assembly by connecting bolts, and the back of the clamping connecting plate receives the four-point evenly distributed thrust generated by the four drive screws through the thrust bearing; the load-equalizing spherical pad is installed between the thrust bearing and the clamping connecting plate, adopting a spherical pair structure, allowing the clamping connecting plate to deflect relatively within a preset angle range, eliminating local contact stress concentration caused by the flatness error of the core package end face; the elastic pad layer is attached to the contact surface of the load-equalizing spherical pad, and evenly distributes the contact surface pressure through elastic deformation.

[0009] Furthermore, the device also includes a displacement synchronous monitoring and compensation mechanism; the displacement synchronous monitoring and compensation mechanism includes four dial indicators, dial indicator brackets, and four single-point compensation adjustment knobs; the four dial indicators are fixed to the positioning frame by the dial indicator brackets, and the probes are respectively arranged at four evenly distributed points on the outer end face of the clamping connecting plate. The four evenly distributed points correspond one-to-one with the positions of the four drive screws, and the axial displacement of the core package at each drive point is displayed in real time; the four single-point compensation adjustment knobs are respectively installed on the four drive screws. Based on the synchronous drive of the four drive screws, each single-point compensation adjustment knob performs a small independent adjustment on a single drive screw to compensate for the displacement difference at each point.

[0010] Furthermore, the device also includes an overload protection and force sensing indication mechanism; the overload protection and force sensing indication mechanism includes a mechanical safety pin and an elastic force sensing indicator; the mechanical safety pin is a shear pin type, installed in series at key nodes of the synchronous drive chain force transmission path, and presets a shear strength based on the maximum allowable load on the end face of the core package assembly. It automatically shears off when overloaded, cutting off the force transmission and preventing overload damage to the core package assembly; the elastic force sensing indicator is installed on the force transmission shaft of the main drive handwheel, and indicates the current operating torque and pull-out force level on the dial through the deformation of the elastic element, providing dual-channel force feedback of visual reading and manual perception.

[0011] Furthermore, the drive screw has a single-start trapezoidal thread with a lead angle of less than 3°, which gives the drive screw self-locking properties and prevents the core assembly from axially retracting when operation stops.

[0012] Furthermore, the center of curvature of the spherical surface of the load-bearing spherical pad coincides with the center plane of the clamping connecting plate; the material of the elastic pad layer is rubber or polyurethane.

[0013] Furthermore, a limiting plate is fixedly connected to the inner wall of the positioning frame, and the inner wall of the limiting plate is slidably connected to the outer side of the clamping connecting plate; a chain support frame is detachably installed on the top surface of the positioning frame, and a synchronous drive chain is slidably connected to the inner wall of the chain support frame.

[0014] The beneficial technical effects of this invention are as follows: 1. This invention applies force synchronously by four drive screws evenly distributed at 90° along the circumference. The resultant force direction is strictly coincident with the pump axis, and the theoretical value of the eccentric bending moment is zero. This fundamentally eliminates the risk of eccentric bending moment and scratches on mating surfaces caused by single-point or double-point force application.

[0015] 2. The present invention can adaptively adjust itself within a range of ±0.5° by using a spherical pair structure of a uniformly loaded spherical pad, converting the end face flatness error into a deflection angle; combined with an elastic pad layer, the end face contact stress concentration factor can be reduced from about 100 to about 2 to 3, the contact stress uniformity is greatly improved, and the hidden damage to the end face is effectively eliminated.

[0016] 3. This invention uses four dial gauges to display the displacement of each point in real time. With the help of a single-point compensation adjustment knob, the displacement deviation of each point can be controlled, and the objective and verifiable displacement synchronization can be achieved.

[0017] 4. This invention forms a dual safety barrier through a mechanical safety pin and an elastic force sensing indicator. Operators can obtain the current pull-out force level in real time through visual reading and manual sensing. In case of overload, the safety pin will automatically cut off the force transmission to prevent overload damage to the core package.

[0018] 5. This invention can be operated by a single person using the device, and the time for a single maintenance operation can be shortened from 4 to 8 hours in the prior art to 0.5 to 1.5 hours. The overall collective irradiation dose equivalent can be significantly reduced, which has important engineering value for the implementation of the ALARA principle in nuclear power plants. Attached Figure Description

[0019] Figure 1 This is an overall three-dimensional schematic diagram of an embodiment of the present invention; Figure 2 This is a side sectional view of the connection relationship of the positioning frame in an embodiment of the present invention; Figure 3 for Figure 2 Enlarged diagram of A in the middle; Figure 4 This is a schematic diagram of the synchronous drive chain in an embodiment of the present invention; Figure 5 This is a schematic diagram of the drive screw in an embodiment of the present invention; Figure 6 This is a schematic diagram of the positioning frame in an embodiment of the present invention.

[0020] In the diagram: 200, Core assembly; 300, Outer cylinder; 11, Positioning frame; 12, Positioning pin; 13, Fastening bolt; 21, Drive screw; 22, Drive nut; 23, Thrust bearing; 31, Synchronous drive chain; 32, Drive sprocket; 33, Main drive handwheel; 41, Clamping connecting plate; 42, Evenly distributed spherical pad; 43, Elastic pad layer; 44, Connecting bolt; 51, Dial indicator; 52, Dial indicator bracket; 53, Single-point compensation adjustment knob; 61, Mechanical safety pin; 62, Elastic force sensing indicator; 71, Limit plate; 72, Chain support frame. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0022] like Figure 1-6 As shown, the present invention provides a core package disassembly device with non-destructive function, which acts on the outlet end flange of the core package assembly 200 to extract the core package from the outer cylinder 300 without damage. It includes: an installation and positioning mechanism, a multi-screw uniformly distributed drive mechanism, a synchronous linkage mechanism, an adaptive floating load-sharing mechanism, a displacement synchronous monitoring and compensation mechanism, and an overload protection and force sensing indication mechanism. The installation and positioning mechanism is installed on the end face of the outer cylinder flange. The multi-screw uniformly distributed drive mechanism is installed on the installation and positioning mechanism. The synchronous linkage mechanism is connected to the multi-screw uniformly distributed drive mechanism, driving multiple drive screws in the multi-screw uniformly distributed drive mechanism to rotate synchronously. The adaptive floating load-sharing mechanism is installed between the multi-screw uniformly distributed drive mechanism and the core package outlet end flange, uniformly distributing the pressure on the contact surface of the core package outlet end flange.

[0023] The mounting and positioning mechanism includes a positioning frame 11, a positioning pin 12, and fastening bolts 13. The positioning frame 11 is a ring-shaped rigid frame structure made of high-strength alloy steel. The positioning frame 11 fits into the outer diameter stop of the outer cylinder 300 flange. The inner diameter of the positioning frame 11 and the outer diameter stop of the outer cylinder 300 flange are in clearance fit, with the clearance controlled within the range of 0.02mm to 0.05mm. The positioning pin 12 passes through the positioning frame 11 and is inserted into the positioning pin hole on the outer cylinder flange. The fastening bolts 13 match the positioning pin 12, axially fixing the positioning frame 11 to the end face of the outer cylinder 300 flange.

[0024] During installation, first, fit the positioning frame 11 onto the outer diameter stop of the outer cylinder 300 flange, then insert the positioning pin 12 into the corresponding positioning pin hole on the outer cylinder flange to achieve circumferential positioning of the device and coaxial alignment of the device axis with the pump axis. After installation, the coaxiality error between the frame axis and the pump axis is no more than 0.1mm. Finally, use fastening bolts 13 to axially fix the positioning frame 11 to the end face of the outer cylinder 300 flange. The fastening bolts 13 bear all the reaction forces during the disassembly process.

[0025] The multi-screw evenly distributed drive mechanism includes: four drive screws 21, a drive nut 22, and a thrust bearing 23. The four drive screws 21 are evenly distributed around the circumference of the positioning frame 11, with the central angle between adjacent screws being 90°. The drive screws 21 are supported in corresponding holes in the positioning frame 11. The axis of the drive screws 21 is parallel to the pump axis. The thread type of the drive screws 21 is a single-start trapezoidal thread with a lead angle of less than 3°, which gives the screws reliable self-locking properties and ensures that the core package will not axially retract due to gravity or elastic rebound when operation stops. The drive nut 22 is matched with the drive screw 21. The drive nut 22 is fixed to the positioning frame 11 and threadedly engages with the corresponding drive screw 21. The four drive screws 21 are each supported in the corresponding holes of the positioning frame 11 by the drive nut 22. The thrust bearing 23 is installed between the front end of the drive screw 21 and the adaptive floating load sharing mechanism. The front end of the drive screw 21 contacts the adaptive floating load sharing mechanism through the thrust bearing 23. The thrust bearing 23 bears the axial thrust generated when the drive screw 21 rotates and isolates the relative rotation between the screw rotation and the core end face, preventing the screw rotation from introducing tangential friction on the core end face.

[0026] The synchronous linkage mechanism includes: a synchronous drive chain 31, drive sprockets 32, and a main drive handwheel 33. The drive sprockets 32 are mounted at the rear end of the drive screws 21. The synchronous drive chain 31 sequentially winds around the four drive sprockets 32, meshing with them to ensure that the four drive screws 21 always rotate synchronously at the same speed. The main drive handwheel 33 is fixedly mounted on the drive chain 31 and serves as a single operating interface. When the operator rotates the main drive handwheel 33, the synchronous drive chain 31 drives the four drive sprockets 32 to rotate synchronously at the same speed. The drive sprockets 32 then drive the drive screws 21 to feed synchronously. The four-point evenly distributed resultant force adaptive floating load-equalizing mechanism acts evenly on the core package end face, with the resultant force direction strictly coinciding with the pump axis. The theoretical value of the eccentric bending moment is zero, enabling single-person operation.

[0027] The adaptive floating load-sharing mechanism includes: a clamping connecting plate 41, a load-sharing spherical pad 42, and an elastic pad layer 43. A thrust bearing 23 is installed between the front end of the drive screw 21 and the clamping connecting plate 41. The clamping connecting plate 41 has standardized bolt holes on its front side, which are fixedly connected to the outlet flange of the core package 200 by connecting bolts 44. The back side receives the four evenly distributed thrusts from the four thrust bearings 23. The load-equalizing spherical pad 42 is installed between the thrust bearings 23 and the clamping connecting plate 41. The center of curvature of the spherical pad coincides with the center plane of the clamping connecting plate 41, allowing the clamping connecting plate 41 to freely deflect relative to the thrust bearings 23 within a range of ±0.5°. Through the self-aligning effect of the spherical pad, the flatness error of the core package end face from 0.05mm to 0.2mm is converted into an allowable deflection angle, avoiding stress concentration caused by local contact of the end face. The elastic pad layer 43 is made of rubber or polyurethane and is attached to the contact surface of the load-equalizing spherical pad 42. Through elastic deformation, the contact surface pressure is further evenly distributed, eliminating residual hard contact points and reducing the end face contact stress concentration factor from about 100 to about 2 to 3.

[0028] The displacement synchronous monitoring and compensation mechanism includes four dial indicators 51, dial indicator brackets 52, and four single-point compensation adjustment knobs 53. The four dial indicators 51 are fixed to the positioning frame 11 via the dial indicator brackets 52. The probes are arranged at four evenly distributed points on the outer end face of the clamping connecting plate 41, corresponding one-to-one with the positions of the four drive screws 21, with a resolution of 0.01mm. They display the axial displacement of the core package at each drive screw 21's drive point in real time. The four single-point compensation adjustment knobs 53 are respectively installed on the four drive screws 21. During disassembly, the operator compares the readings of the four dial indicators 51 in real time: if the displacement of a certain point lags behind the other three points, it indicates that the friction in the corresponding mating area is too high. The operator can then slightly rotate the corresponding drive screw 21 using the corresponding single-point compensation adjustment knob 53 to bring the displacements of each point back to a uniform level, with a compensation accuracy of ±0.05mm, meeting the protection requirements of precision mating surfaces.

[0029] The overload protection and force sensing indicator mechanism includes a mechanical safety pin 61 and an elastic force sensing indicator 62. The mechanical safety pin 61 is a shear pin type, installed in series at key nodes in the force transmission path of the synchronous drive chain 31. Based on the maximum allowable load on the end face of the core package 200, it is usually set to a preset shear strength of 1.5 times the theoretical pull-out force. Once the actual pull-out force exceeds the preset value, the mechanical safety pin 61 immediately shears off, the synchronous drive chain 31 loosens, the four drive screws 21 stop driving, and the force transmission path is cut off to prevent overload damage to the precision components of the core package. The elastic force sensing indicator 62 is installed on the force transmission shaft of the main drive handwheel 33. Within the normal operating range, it continuously indicates the current operating torque and pull-out force level on the dial by measuring the deformation of the elastic element, providing dual-channel force feedback of visual reading and manual perception. When the reading of the elastic force sensing indicator 62 approaches 80% of the preset shear value of the mechanical safety pin 61, the colored area of ​​the dial issues a warning, guiding the operator to slow down the operating speed or check for local jamming, forming a double safety line in cooperation with the mechanical safety pin 61.

[0030] In one specific embodiment, a limiting plate 71 is fixedly connected to the inner wall of the positioning frame 11, and the inner wall of the limiting plate 71 is slidably connected to the outer side of the clamping connecting plate 41. The axis of the positioning frame 11 is coaxial with the pump axis, and the single-point compensation adjustment knob 53 independently adjusts a single drive screw 21. A chain support frame 72 is detachably installed on the top surface of the positioning frame 11, and a synchronous drive chain 31 is slidably connected to the inner wall of the chain support frame 72.

[0031] Example 1 Taking the disassembly of the core package of the main feedwater pump in a nuclear power plant as an example, the core package weighs approximately 500 kg, the nominal diameter of the mating surface is approximately 300 mm, the mating length is approximately 1000 mm, and the typical axial pull-out force is 30 kN to 100 kN. The operation steps are as follows: First, the positioning frame 11 is fitted with the flange of the outer cylinder 300, the positioning pin 12 is inserted to achieve axis alignment, and the fastening bolts 13 are tightened. Then, the clamping connecting plate 41 is fixedly connected to the flange of the core package 200 outlet end face through the connecting bolts 44. The dial indicator bracket 52 is adjusted so that the probes of the four dial indicators 51 are in contact with the four evenly distributed points on the outer end face of the clamping connecting plate 41, and the readings are zeroed. The operator rotates the main drive handwheel 33 and observes the readings of the elastic force sensing indicator 62 and the four dial indicators 51. When the reading of a certain dial indicator 51 lags behind, the corresponding single-point compensation adjustment knob 53 is adjusted for micro-compensation to keep the displacement deviation of the four points within ±0.05mm until the core package 200 is completely pulled out of the outer cylinder 300. The entire operation can be completed by a single person, and the operation time can be controlled within 0.5 hours to 1.5 hours. Compared with the existing technology, it can significantly reduce the collective radiation dose equivalent during nuclear power plant maintenance operations.

[0032] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. However, the present invention is not limited to the above embodiments, and various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention. All contents not described in detail in the present invention can be derived from existing technologies.

Claims

1. A core package disassembly device with non-destructive function, characterized in that, The device includes an installation and positioning mechanism, a multi-screw uniformly distributed drive mechanism, a synchronous linkage mechanism, and an adaptive floating load-sharing mechanism. The installation and positioning mechanism is installed on the outer cylinder flange end face, the multi-screw uniformly distributed drive mechanism is installed on the installation and positioning mechanism, the synchronous linkage mechanism is connected to the multi-screw uniformly distributed drive mechanism, and drives the multiple drive screws in the multi-screw uniformly distributed drive mechanism to rotate synchronously, and the adaptive floating load-sharing mechanism is installed between the multi-screw uniformly distributed drive mechanism and the core package outlet end face flange, and evenly distributes the pressure on the contact surface of the core package outlet end face flange.

2. A core package disassembly device with non-destructive function according to claim 1, characterized in that, The installation and positioning mechanism includes a positioning frame, a positioning pin, and fastening bolts. The positioning frame is a ring-shaped rigid frame structure. The positioning frame fits into the outer diameter stop of the outer cylinder flange, and its inner diameter matches the outer diameter stop of the outer cylinder flange. The axis of the positioning frame is coaxial with the pump axis. The positioning pin passes through the positioning frame and is inserted into the positioning pin hole on the outer cylinder flange to achieve coaxial alignment between the device axis and the pump axis. The fastening bolts match the positioning pins to axially fix the positioning frame to the end face of the outer cylinder flange.

3. A core package disassembly device with non-destructive function according to claim 2, characterized in that, The multi-screw uniformly distributed drive mechanism includes drive screws, drive nuts, and thrust bearings; four drive screws are evenly distributed along the circumference of the positioning frame, and the drive screws are supported in corresponding holes in the positioning frame, with the drive screw axis parallel to the pump axis; the drive nut matches the drive screw, is fixed to the positioning frame, and is threadedly engaged with the corresponding drive screw; the thrust bearing is installed between the front end of the drive screw and the adaptive floating load-equalizing mechanism.

4. A core package disassembly device with non-destructive function according to claim 3, characterized in that, The synchronous linkage mechanism includes a synchronous drive chain, a drive sprocket, and a main drive handwheel; the drive sprocket is installed at the rear end of the drive screw; the synchronous drive chain connects the drive sprockets on the four drive screws, so that the four drive screws rotate synchronously; the main drive handwheel is fixedly installed on the drive chain, and the main drive handwheel drives the four drive sprockets to rotate synchronously at the same speed through the synchronous drive chain.

5. A core package disassembly device with non-destructive function according to claim 4, characterized in that, The adaptive floating load-equalizing mechanism includes a clamping connecting plate, a load-equalizing spherical pad, and an elastic pad layer. A thrust bearing is installed between the front end of the drive screw and the clamping connecting plate. The front of the clamping connecting plate is fixedly connected to the outlet flange of the core package assembly via connecting bolts, and the back of the clamping connecting plate receives the four-point evenly distributed thrust generated by the four drive screws via the thrust bearing. The load-equalizing spherical pad is installed between the thrust bearing and the clamping connecting plate. It adopts a spherical pair structure, which allows the clamping connecting plate to deflect relatively within a preset angle range, eliminating local contact stress concentration caused by the flatness error of the core package end face. The elastic pad layer is attached to the contact surface of the load-equalizing spherical pad and evenly distributes the contact surface pressure through elastic deformation.

6. A core package disassembly device with non-destructive function according to claim 5, characterized in that, The device also includes a displacement synchronous monitoring and compensation mechanism; the displacement synchronous monitoring and compensation mechanism includes four dial indicators, dial indicator brackets, and four single-point compensation adjustment knobs; the four dial indicators are fixed to the positioning frame by the dial indicator brackets, and the probes are respectively arranged at four evenly distributed points on the outer end face of the clamping connecting plate. The four evenly distributed points correspond one-to-one with the positions of the four drive screws, and the axial displacement of the core package at each drive point is displayed in real time; the four single-point compensation adjustment knobs are respectively installed on the four drive screws. Based on the synchronous drive of the four drive screws, each single-point compensation adjustment knob performs a small independent adjustment on a single drive screw to compensate for the displacement difference at each point.

7. A core package disassembly device with non-destructive function according to claim 6, characterized in that, The device also includes an overload protection and force sensing indication mechanism; the overload protection and force sensing indication mechanism includes a mechanical safety pin and an elastic force sensing indicator; The mechanical safety pin is a shear pin type, installed in series at key nodes in the force transmission path of the synchronous drive chain. The shear strength is preset according to the maximum allowable load on the end face of the core package assembly. It automatically shears off in case of overload, cutting off the force transmission and preventing overload damage to the core package assembly. The elastic force sensing indicator is installed on the force transmission shaft of the main drive handwheel. It indicates the current operating torque and pull-out force level on the dial through the deformation of the elastic element, providing dual-channel force feedback of visual reading and manual perception.

8. A core package disassembly device with non-destructive function according to claim 3, characterized in that, The drive screw has a single-start trapezoidal thread with a lead angle of less than 3°, which gives the drive screw self-locking properties and prevents the core assembly from axially retracting when operation stops.

9. A core package disassembly device with non-destructive function according to claim 5, characterized in that, The center of curvature of the spherical pad is coincident with the center plane of the clamping connecting plate; the elastic pad is made of rubber or polyurethane.

10. A core package disassembly device with non-destructive function according to claim 4, characterized in that, The positioning frame has a limiting plate fixedly connected to its inner wall, and the inner wall of the limiting plate is slidably connected to the outer side of the clamping connecting plate; a chain support frame is detachably installed on the top surface of the positioning frame, and a synchronous drive chain is slidably connected to the inner wall of the chain support frame.

Images