Dismounting device

Abstract

The utility model relates to the technical field of bolt maintenance, and discloses a dismounting device suitable for dismounting a nut of a bolt, which comprises a fixing assembly suitable for being connected with a screw rod of the bolt and fixing the screw rod; the heating assembly is arranged on the outer side of the nut and is suitable for heating the nut; the cooling assembly is suitable for cooling the screw; the driving assembly is suitable for being connected with the nut and driving the nut to rotate relative to the screw. By arranging the heating assembly and the cooling assembly, when the nut is disassembled, the nut is heated to expand and the screw rod is cooled to contract by utilizing the principle of thermal expansion and cold contraction of a metal material, so that a gap is generated at the threaded connection part of the screw rod and the nut, the separation of the nut is accelerated, and the nut and the screw rod are not damaged during separation; the service life of the bolt is prolonged; by arranging the driving assembly, rotating force can be provided for the nut during separation, the nut is driven to rotate, and separation of the nut and the screw rod is facilitated; and by arranging the fixing assembly, the screw can be fixed, and the screw is prevented from rotating along with the nut.

Description

Technical Field

[0001] The utility model relates to the technical field of bolt repair, in particular to a disassembly device. Background Art

[0002] In recent years, domestic thermal power plants have been affected by peak load regulation, with an increase in the number of turbine start-ups and shutdowns and frequent load changes, which has led to fatigue fractures of high- and medium-pressure cylinder bolts, steam pipe bolts, valve bolts and other stud bolts of steam turbines during the operation of steam turbines. The location of stud bolt fracture is usually the connection between the nut and the screw. For the safety and stability of operation, the stud bolts need to be fully inspected during maintenance. According to the requirements of the technical guidelines for medium and high temperature fasteners in thermal power plants, the nuts of the stud bolts need to be removed for maintenance.

[0003] At present, when domestic thermal power plants overhaul steam turbines, in order to save maintenance time, they only remove the nuts on one side of the stud bolts, which causes the nuts on the other side to oxidize and bite after long-term operation, and cannot be removed normally during subsequent maintenance; if conventional methods are used for disassembly, it is easy to cause damage to the screw and nut; if they are not disassembled, it is impossible to conduct comprehensive non-destructive testing and physical and chemical inspections on the stud bolts, resulting in a major safety hazard to the operation of the steam turbine. Utility Model Content

[0004] In view of this, the utility model provides a disassembly device to solve the problem that the screw rod and the nut are easily damaged when the nut on the stud bolt is disassembled.

[0005] The utility model provides a disassembly device suitable for disassembling a nut of a bolt, comprising:

[0006] A fixing assembly, adapted to be connected to the screw rod of the bolt to fix the screw rod;

[0007] A heating component, disposed on the outside of the nut and suitable for heating the nut;

[0008] A cooling component, suitable for cooling the screw;

[0009] The driving assembly is suitable for connecting with the nut and driving the nut to rotate relative to the screw rod.

[0010] Beneficial effects: Generally, bolts are made of metal materials. By setting a heating component and a cooling component, the thermal expansion and contraction principle of metal materials can be utilized. When the nut is removed, the nut is heated and expanded, and the screw is cooled and contracted, so that a gap is generated at the threaded connection between the screw and the nut, thereby accelerating the separation of the nut, and will not cause damage to the nut and the screw during separation, thereby improving the service life of the bolt; by setting a driving component, a rotational force can be provided to the nut during separation, driving the nut to rotate, thereby facilitating the separation of the nut and the screw; by setting a fixing component, when the driving component drives the nut to rotate, the screw can be fixed to prevent the screw from rotating with the nut, thereby improving the separation efficiency.

[0011] In an optional embodiment, the heating component includes:

[0012] A heating element, disposed on the outer side of the nut and suitable for heating the nut;

[0013] The heat-insulating layer is arranged on the outer side of the heating element and is suitable for keeping the nut warm.

[0014] Beneficial effects: By providing a heating element, the nut can be heated to expand the nut; by providing a thermal insulation layer, heat can be stored around the nut to prevent heat from dissipating, so that the nut reaches a higher temperature in a short time, thereby improving the heating efficiency.

[0015] In an optional embodiment, the heating component includes:

[0016] A temperature detection element connected to the heating element;

[0017] A temperature controller is connected to the temperature detecting element and is suitable for controlling the heating temperature of the heating element.

[0018] Beneficial effect: By setting a temperature detection element and a temperature controller, the heating temperature and heating time of the heating element can be controlled, thereby improving the heating efficiency.

[0019] In an optional embodiment, the heating element is a ceramic heater;

[0020] And / or, the thermal insulation layer is a refractory fiber material;

[0021] And / or, the heating element includes a plurality of separately connected heating units.

[0022] Beneficial effects: By using a ceramic heater as the heating structure, the thermal insulation effect is good and the service life is long; the thermal insulation layer adopts refractory fiber material, which can withstand high temperatures and has a long service life; by using multiple separately connected heating units to heat the nut, it is convenient to fix the heating element to the outside of the nut.

[0023] In an optional embodiment, the cooling component includes:

[0024] A gas inlet member, adapted to introduce low-temperature gas to the screw;

[0025] And / or, a refrigeration device, connected to the air inlet member, suitable for transmitting the low-temperature gas to the air inlet member.

[0026] Beneficial effects: By providing an air inlet, the temperature at the screw can be reduced, causing the screw to shrink, making it easier to separate the nut; by providing a refrigeration device, the temperature at the screw can be quickly reduced, and the screw can shrink to a greater extent.

[0027] In an optional embodiment, the drive assembly includes:

[0028] a first driving member;

[0029] A connecting member has one end connected to the first driving member and the other end suitable for connecting to the nut and driving the nut to rotate under the drive of the first driving member.

[0030] Beneficial effects: by setting the first driving member, a rotational force can be provided for the rotation of the nut, saving manpower; by setting the connecting member, the adaptability with the nut is better and the connection is tighter.

[0031] In an optional embodiment, a first plug-in portion is provided at the end of the nut, and a second plug-in portion matching with the first plug-in portion is provided on one side of the connector.

[0032] Beneficial effect: By arranging the second plug-in portion on the connecting piece, the connection with the nut is tighter.

[0033] In an optional embodiment, the drive assembly includes:

[0034] A second driving member, fixedly connected to the first driving member, and adapted to drive the first driving member to move toward or away from the screw rod;

[0035] And / or, a guide member, the first driving member is arranged on the guide member, and the first driving member moves relative to the guide member.

[0036] Beneficial effects: By setting up a second driving member, the first driving member can be driven to move, so that the first driving member is connected to the nut through the connecting member; secondly, when the first driving member drives the nut to rotate, the second driving member can provide pulling force to accelerate the separation of the nut; by setting up a guide member, the first driving member is facilitated to move in the same direction to ensure uniform force.

[0037] In an optional embodiment, the disassembly device includes:

[0038] A shell, the shell comprising a first cavity, a second cavity and a third cavity which are fixedly connected in sequence, and the first cavity, the second cavity and the third cavity are respectively provided with a first opening;

[0039] The driving component is disposed in the first cavity, the heating component is disposed in the second cavity, and the fixing component and the cooling component are disposed in the third cavity;

[0040] The connecting end of the nut and the screw rod is arranged in the second cavity, and the other end of the nut is arranged in the first cavity; the screw rod is arranged in the third cavity.

[0041] Beneficial effects: By arranging the heating component and the connecting end of the nut and the screw in the second cavity, a high-temperature environment can be provided for the nut to prevent heat loss and reduce the expansion effect of the nut; by arranging the cooling component and the screw in the third cavity, a low-temperature environment can be provided for the screw to prevent heat from entering and reduce the contraction effect of the screw; by providing a first opening on the first cavity, it is convenient to replace the connecting part; by providing a first opening on the second cavity, it is convenient to arrange the heating element and the insulation layer on the outside of the nut; by providing a first opening on the third cavity, it is convenient to place the bolt into the shell.

[0042] In an optional embodiment, a first partition is provided at the connection between the first cavity and the second cavity, a second partition is provided at the connection between the second cavity and the third cavity, and a second opening is provided on both the first partition and the second partition, and the second opening is suitable for the nut to pass through.

[0043] Beneficial effect: By providing the first partition and the second partition, the second cavity and the third cavity can be separated from the external environment to prevent heat transfer.

[0044] In an optional embodiment, the disassembly device includes:

[0045] a cover plate, the cover plate being arranged on the first opening;

[0046] And / or, a base is arranged at the bottom of the shell.

[0047] Beneficial effects: By setting the cover plate, the heat transfer between the second cavity and the third cavity can be prevented; secondly, the screw can be prevented from abnormalities, such as breaking and flying out, causing safety hazards; by setting the base, the bearing capacity of the disassembly device can be improved, which is convenient for transportation.

[0048] In an optional embodiment, the disassembly device includes:

[0049] A magnetic attraction member, arranged on the lower side of the base;

[0050] And / or, a sliding member is arranged below the base.

[0051] Beneficial effects: By setting up a magnetic suction piece, the disassembly device can be fixed above the maintenance platform, which is convenient for manual operation, and the disassembly device has good stability during use and is not prone to displacement; by setting up a sliding piece, the movement of the disassembly device can be facilitated, saving manpower.

[0052] In an optional embodiment, the fixing assembly includes at least two fixing members, and at least two of the fixing members are arranged on both sides of the screw rod and are suitable for fixing the screw rod.

[0053] In an optional embodiment, the fixing assembly is provided with at least two groups;

[0054] and / or, at least one set of the fixing components is arranged near the connection between the nut and the screw;

[0055] And / or, the fixing assembly includes three fixing members;

[0056] And / or, the fixing member is a hydraulic rod;

[0057] And / or, an anti-slip member is provided between the fixing member and the screw rod.

[0058] Beneficial effects: by setting at least two groups of fixing components and setting them at intervals along the length direction of the screw, more stable support can be provided to multiple parts of the screw, and the clamping effect is better; by setting at least one group of fixing components close to the connection between the nut and the screw, the end of the screw can be prevented from shaking, which affects the disassembly of the nut; by setting three fixing parts, the fixing effect of the screw is better and the screw can be prevented from shaking; the hydraulic rod can fix bolts of different diameters by controlling the extended length, thereby improving the applicability of the fixing part; by setting the anti-slip part, the friction between the fixing part and the screw can be increased, thereby preventing the screw from rotating. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0060] Figure 1 This is a structural schematic diagram of a disassembly device according to an embodiment of the utility model;

[0061] Figure 2 A cross-sectional view of a disassembly device according to an embodiment of the utility model from a first viewing angle;

[0062] Figure 3 A cross-sectional view of the disassembly device of the embodiment of the utility model from a second viewing angle;

[0063] Figure 4 A partial cross-sectional view of a disassembly device according to an embodiment of the utility model;

[0064] Figure 5 This is a schematic structural diagram of a base according to a novel embodiment of the present invention.

[0065] Description of reference numerals:

[0066] 1. Bolt; 11. Nut; 111. First plug-in part; 12. Screw; 2. Fixing assembly; 21. Fixing piece; 22. Anti-slip piece; 3. Heating assembly; 31. Heating piece; 32. Insulation layer; 33. Temperature detection piece; 34. Temperature controller; 4. Cooling assembly; 41. Air intake piece; 42. Refrigeration device; 43. Exhaust piece; 5. Driving assembly; 51. First driving piece; 52. Connecting piece; 521. Second plug-in part; 53. Second driving piece; 54. Guide piece; 6. Shell; 61. First cavity; 62. Second cavity; 63. Third cavity; 64. First partition piece; 65. Second partition piece; 7. Cover plate; 8. Base; 9. Magnetic piece; 10. Sliding piece. DETAILED DESCRIPTION

[0067] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0068] Combine the following Figures 1 to 5 , describing an embodiment of the utility model.

[0069] According to an embodiment of the utility model, a disassembly device is provided, which is suitable for disassembling the nut 11 of the bolt 1, including: a fixing component 2, suitable for connecting with the screw rod 12 of the bolt 1 to fix the screw rod 12; a heating component 3, arranged on the outside of the nut 11, suitable for heating the nut 11; a cooling component 4, suitable for cooling the screw rod 12; a driving component 5, suitable for connecting with the nut 11, and driving the nut 11 to rotate relative to the screw rod 12.

[0070] Generally, the bolt 1 is made of metal material. By setting a heating component 3 and a cooling component 4, the thermal expansion and contraction principle of metal materials can be utilized. When the nut 11 is removed, the nut 11 is heated and expanded, and the screw 12 is cooled and contracted, so that a gap is generated at the threaded connection between the screw 12 and the nut 11, thereby accelerating the separation of the nut 11, and will not cause the nut 11 and the screw 12 to be damaged during separation, thereby improving the service life of the bolt 1; by setting a driving component 5, a rotational force can be provided for the nut 11 during separation, driving the nut 11 to rotate, thereby facilitating the separation of the nut 11 and the screw 12; by setting a fixing component 2, when the driving component 5 drives the nut 11 to rotate, the screw 12 can be fixed to prevent the screw 12 from rotating with the nut 11, thereby improving the separation efficiency.

[0071] like Figure 4 As shown, the fixing assembly 2 in this embodiment includes three fixing members 21. Among them, the three fixing members 21 are located on a plane perpendicular to the length direction of the screw rod 12, and the angles between the three fixing members 21 are all 120°. By providing three fixing members 21, the fixing effect of the screw rod 12 is better, and the screw rod 12 can be prevented from shaking. As a convertible embodiment, it is also possible that the fixing assembly 2 includes two fixing members 21, and the two fixing members 21 are arranged on both sides of the screw rod 12, suitable for fixing the screw rod 12, or the fixing assembly 2 includes four or five fixing members 21, thereby providing more stable support for the screw rod 12.

[0072] The fixing member 21 is a hydraulic rod, which can control the length of extension to fix bolts 1 of different diameters, thereby improving the applicability of the fixing member 21. As a convertible embodiment, it is also possible that a plurality of fixing members 21 are provided, and the plurality of fixing members 21 are of different lengths. A suitable fixing member 21 can be selected according to the diameter of the screw rod 12. If there is still a gap between the fixing member 21 and the screw rod 12, a flexible material is used to fill it. As a convertible embodiment, it is also possible that the fixing member 21 is other mechanisms capable of adjusting the telescopic length, such as a gas cylinder, an oil cylinder, etc.

[0073] like Figure 2-Figure 3 As shown, the fixing components 2 in this embodiment are provided with four groups. Since the screw 12 is relatively long, by providing four groups of fixing components 2, which are arranged at intervals along the length direction of the screw 12, more stable support can be provided to multiple parts of the screw 12, and the clamping effect is better; one group of fixing components 2 is arranged close to the connection between the nut 11 and the screw 12, which can prevent the end of the screw 12 from shaking and affecting the disassembly of the nut 11. As a convertible embodiment, it is also possible that the fixing components 2 are provided with two or three groups, and the number of fixing components 2 is determined according to the tightness of the connection between the nut 11 and the screw 12, and no excessive restrictions are made here.

[0074] like Figure 4 As shown, an anti-slip member 22 is provided between the fixing member 21 and the screw rod 12. Specifically, the anti-slip member 22 is an anti-slip pad, and the surface of the anti-slip pad is concave-convex. By providing the anti-slip member 22, the friction between the fixing member 21 and the screw rod 12 can be increased, thereby preventing the screw rod 12 from rotating. As a convertible embodiment, the anti-slip member 22 can also be rubber, silicone, etc. As a convertible embodiment, the anti-slip member 22 can also be not provided, but the fixing member 21 can only directly contact the screw rod 12 to fix the screw rod 12.

[0075] like Figure 2-Figure 3 As shown, the heating assembly 3 in this embodiment includes: a heating element 31, which is arranged on the outside of the nut 11 and is suitable for heating the nut 11; a heat-insulating layer 32, which is arranged on the outside of the heating element 31 and is suitable for keeping the nut 11 warm. By providing the heating element 31, the nut 11 can be heated to expand the nut 11; by providing the heat-insulating layer 32, the heat can be stored around the nut 11 to prevent the heat from dissipating, so that the nut 11 reaches a higher temperature in a short time, thereby improving the heating efficiency. As a convertible embodiment, it is also possible that the heat-insulating layer 32 is not provided, and the heating element 31 is continuously heated to quickly heat up the nut 11.

[0076] Specifically, the heating element 31 is a ceramic heater, including a plurality of split-connected heating units. Two of the heating units are detachably connected. A plurality of heating units are annularly attached to the outside of the nut 11 and can be replaced according to the size of the nut 11. The heating temperature in this embodiment is 300°C. By using a ceramic heater as a heating structure, the heat preservation effect is good and the service life is long; by using a plurality of split-connected heating units to heat the nut 11, it is convenient to fix the heating element 31 to the outside of the nut 11; by setting the heating temperature of the heating element 31 to 300°C, the nut 11 can be expanded quickly, which is convenient for separation. As a convertible embodiment, the heating element 31 can also be a resistance wire heating, or other heating element. As a convertible embodiment, the heating unit can also be provided with only two, one end of the two heating units is hingedly connected, and the other end is detachably connected by a buckle. As a convertible embodiment, it can also be that the heating element 31 is an annular structure with an opening, which is sleeved on the outside of the nut 11, and the two sides of the opening are glued together. As an alternative embodiment, the heating temperature may also be set to 400° C. or 500° C., without further limitation.

[0077] The insulation layer 32 is made of refractory fiber material; specifically, aluminum silicate refractory fiber is used. The insulation layer 32 is made of refractory fiber material, which can withstand high temperatures and has a long service life. The insulation layer 32 is detachably arranged on the outside of the heating element 31, which is convenient for fixing the insulation layer 32. Specifically, the connection method between the insulation layer 32 and the heating element 31 is the same as the connection method between the heating element 31 and the nut 11, which will not be repeated here. As a convertible embodiment, the insulation layer 32 can also be made of polyurethane material or rock wool material.

[0078] like Figure 3 As shown, the heating component 3 includes: a temperature detection component 33, which is connected to the heating component 31; and a temperature controller 34, which is connected to the temperature detection component 33 and is suitable for controlling the heating temperature of the heating component 31. Specifically, the temperature detection component 33 is a temperature sensor. By setting the temperature detection component 33 and the temperature controller 34, the heating temperature and heating time of the heating component 31 can be controlled, thereby improving the heating efficiency. As a convertible embodiment, it is also possible to directly heat the heating component 31 for a period of time. If the nut 11 still cannot be separated, the nut 11 continues to be heated without setting the temperature detection component 33 and the temperature controller 34. As a convertible embodiment, it is also possible that the temperature detection component 33 is a temperature sensing bag, or other temperature detection devices.

[0079] like Figure 1-Figure 3 As shown, the cooling component 4 includes: an air inlet 41, which is suitable for guiding low-temperature gas to the screw 12; a refrigeration device 42, which is connected to the air inlet 41 and is suitable for transmitting low-temperature gas to the air inlet 41. By setting the air inlet 41, the temperature at the screw 12 can be reduced, so that the screw 12 shrinks, which is convenient for the separation of the nut 11; by setting the refrigeration device 42, the temperature at the screw 12 can be quickly reduced, and the screw 12 can shrink to a large extent. As a convertible embodiment, it is also possible to directly wrap the refrigeration component on the outside of the screw 12, or to set the refrigeration component near the screw 12 to reduce the temperature at the screw 12.

[0080] The refrigeration device 42 is any device capable of cooling the room in the prior art, such as a refrigerator or an air conditioner, and no further restrictions are imposed here.

[0081] It should be noted that since the nut 11 is heated to 300° C., the normal temperature gas is also low temperature gas relative to the heated nut 11 . Therefore, in other embodiments, the outside air can be directly introduced into the screw 12 as low temperature gas.

[0082] like Figure 3As shown, the cooling component 4 includes: an exhaust member 43, which is suitable for exhausting the high-temperature gas to a place far away from the screw 12. By providing the exhaust member 43, the temperature at the screw 12 can be accelerated. As a convertible embodiment, it is also possible to exhaust the high-temperature gas by providing an opening without providing the exhaust member 43.

[0083] The air inlet member 41 and the air outlet member 43 are fans. As a convertible embodiment, the air inlet member 41 and the air outlet member 43 can also be blowers.

[0084] like Figure 2-Figure 3 As shown, the driving assembly 5 in this embodiment includes: a first driving member 51; a connecting member 52, one end of which is connected to the first driving member 51, and the other end is suitable for connecting the nut 11, and drives the nut 11 to rotate under the drive of the first driving member 51. Among them, the end of the nut 11 is provided with a first plug-in portion 111, and one side of the connecting member 52 is provided with a second plug-in portion 521 that matches the first plug-in portion 111. By providing the first driving member 51, it is possible to provide a rotational force for the rotation of the nut 11, saving manpower; by providing the connecting member 52, the adaptability with the nut 11 is better and the connection is tighter; by providing the second plug-in portion 521 on the connecting member 52, the connection with the nut 11 is tighter. As a convertible embodiment, it is also possible that the connecting member 52 is not provided, and the output end of the first driving member 51 is directly connected to the nut 11. As a convertible embodiment, it is also possible that one side of the connecting member 52 is provided with an opening that matches the outer end of the nut 11.

[0085] Specifically, the first driving member 51 is a motor, which provides a rotational force, thereby driving the nut 11 to rotate. The first plug-in portion 111 of the nut 11 and the end of the motor close to the connecting member 52 are both provided with a hexagonal hole, and both ends of the connecting member 52 are hexagonal columns. The size of the connecting end of the connecting member 52 and the motor is fixed, and the size of the connecting end of the connecting member 52 and the nut 11 can be determined according to the size of the first plug-in portion 111. There are multiple connecting members 52, which are suitable for adapting to nuts 11 of different sizes, and the shapes of the ends of the multiple connecting members 52 can be different to adapt to the shapes of the ends of the first plug-in portions 111 of different nuts 11.

[0086] When the motor drives the nut 11 to rotate, the nut 11 will rotate away from the screw 12, that is, the nut 11 will move in the direction away from the screw 12. Therefore, the driving assembly 5 in this embodiment includes: a second driving member 53, which is fixedly connected to the first driving member 51 and is suitable for driving the first driving member 51 to move in the direction close to or away from the screw 12; a guide member 54, on which the first driving member 51 is arranged, and the first driving member 51 moves relative to the guide member 54. Specifically, the second driving member 53 is a hydraulic member, which drives the first driving member 51 to move by controlling the extension length; the guide member 54 is a slide rail, and the motor is installed on the slide rail for movement. By setting the second driving member 53, the first driving member 51 can be driven to move, so that the first driving member 51 is connected to the nut 11 through the connecting member 52; secondly, when the first driving member 51 drives the nut 11 to rotate, the second driving member 53 can provide a pulling force to accelerate the separation of the nut 11; by setting the guide member 54, it is convenient for the first driving member 51 to move in the same direction to ensure uniform force. As a convertible implementation, the second driving member 53 may not be provided, but the first driving member 51 may be manually pushed to approach the nut 11 or drive the nut 11 to separate from the screw rod 12. As a convertible implementation, the guide member 54 may not be provided, and the moving track of the first driving member 51 may be manually controlled.

[0087] like Figure 1-Figure 3 As shown, the disassembly device in this embodiment includes: a shell 6, the shell 6 includes a first cavity 61, a second cavity 62 and a third cavity 63 which are fixedly connected in sequence, and the first cavity 61, the second cavity 62 and the third cavity 63 are respectively provided with a first opening; the driving component 5 is arranged in the first cavity 61, the heating component 3 is arranged in the second cavity 62, and the fixing component 2 and the cooling component 4 are arranged in the third cavity 63; the connecting end of the nut 11 and the screw 12 is arranged in the second cavity 62, and the other end of the nut 11 is arranged in the first cavity 61; the screw 12 is arranged in the third cavity 63.

[0088] By arranging the heating component 3 and the connecting end of the nut 11 and the screw 12 in the second cavity 62, a high-temperature environment can be provided for the nut 11 to prevent heat loss and reduce the expansion effect of the nut 11; by arranging the cooling component 4 and the screw 12 in the third cavity 63, a low-temperature environment can be provided for the screw 12 to prevent heat from entering and reduce the contraction effect of the screw 12; by providing a first opening on the first cavity 61, it is convenient to replace the connecting member 52; by providing a first opening on the second cavity 62, it is convenient to arrange the heating element 31 and the insulation layer 32 on the outside of the nut 11; by providing a first opening on the third cavity 63, it is convenient to place the bolt 1 into the shell 6.

[0089] Specifically, the temperature detection element 33 and the temperature controller 34 are arranged on the outside of the shell 6 to facilitate the control of the heating temperature; one end of the hydraulic rod is fixed to the screw 12, and the other end is fixed to the inner wall of the third cavity 63.

[0090] The air inlet member 41 and the air exhaust member 43 are both arranged on the side wall of the third cavity 63. The air inlet member 41 is arranged below the shell 6, and is suitable for inhaling the air in the refrigeration device 42 or the cold air outside the shell 6; the air exhaust member 43 is arranged above the shell 6, and is suitable for discharging the hot air inside the shell 6.

[0091] like Figure 1 As shown, a first partition 64 is provided at the connection between the first cavity 61 and the second cavity 62, a second partition 65 is provided at the connection between the second cavity 62 and the third cavity 63, and a second opening is provided on each of the first partition 64 and the second partition 65, and the second opening is suitable for the nut 11 to pass through. By providing the first partition 64 and the second partition 65, the second cavity 62 and the third cavity 63 can be separated from the external environment to prevent heat transfer.

[0092] like Figure 1 As shown, the disassembly device in this embodiment includes: a cover plate 7, which is covered on the first opening. By setting the cover plate 7, the heat in the second cavity 62 and the third cavity 63 can be prevented from transferring; secondly, the screw 12 can be prevented from abnormality, such as breaking and flying out, causing safety hazards. The cover plate 7 in this embodiment is an integrally formed setting, and it can also be that the cover plate 7 is respectively set on the first openings of the first cavity 61, the second cavity 62 and the third cavity 63.

[0093] like Figure 1 As shown, the disassembly device in this embodiment includes: a base 8, which is arranged at the bottom of the shell 6. By providing the base 8, the bearing capacity of the disassembly device can be improved, and it is convenient for transportation. As a convertible embodiment, when the thickness of the lower shell of the shell 6 is large, the base 8 can also be omitted.

[0094] like Figure 5 As shown, the disassembly device in this embodiment includes: a magnetic member 9, which is arranged on the lower side of the base 8. By providing the magnetic member 9, the disassembly device can be fixed above the maintenance platform, which is convenient for manual operation, and the disassembly device has good stability during use and is not easy to be displaced. As a convertible implementation method, it is also possible that the magnetic member 9 is not provided, but a mounting member is fixed to the bottom side of the shell 6, and the mounting member and the maintenance platform are fixed by bolts, or, if the weight of the base 8 is large enough, there is no need to provide the magnetic member 9, and the stability of the disassembly device will not be affected.

[0095] like Figure 1As shown, the disassembly device in this embodiment includes: a sliding member 10, which is arranged below the base 8. Specifically, the sliding member 10 is a roller, and three groups of rollers are detachably arranged on the base 8. By providing the sliding member 10, the movement of the disassembly device can be facilitated and manpower can be saved. As a convertible implementation, when the weight of the disassembly device is not large, the sliding member 10 does not need to be provided, and manpower can be used to move it.

[0096] The bolt 1 in this embodiment has a length of 200 mm-1500 mm and a diameter of 32 mm-140 mm, corresponding to a length of 2 m of the housing 6 .

[0097] The method of using the disassembly device in this embodiment is as follows:

[0098] Step 1: open the cover plate 7, place the bolt 1 whose nut 11 needs to be removed into the housing 6 from the first opening of the third cavity 63, and fix the nut 11 into the second openings of the first partition 64 and the second partition 65;

[0099] Step 2: fix the ceramic heater to the outside of the nut 11, and fix the insulation layer 32 on the outside of the ceramic heater;

[0100] Step 3: Extend four sets of hydraulic rods simultaneously to fix the screw rod 12;

[0101] Step 4: After the ceramic heater is heated to 300° C., the heating is stopped; at the same time, the refrigeration device 42 is turned on, and the air inlet 41 absorbs the low-temperature gas of the refrigeration device 42 into the third cavity 63 to keep the temperature of the screw 12 below 50° C.;

[0102] Step 5: Repeat step 4 three times, with an interval of 5 to 10 minutes each time;

[0103] Step 6: The hydraulic component drives the motor to move closer to the nut 11, insert the connecting piece 52 into the hexagonal hole of the nut 11, start the motor, apply a rotational force to the nut 11, separate the screw rod 12 from the nut 11, and complete the disassembly of the nut 11.

[0104] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A disassembly device, suitable for disassembling a nut (11) of a bolt (1), characterized in that: include: A fixing assembly (2), adapted to be connected to the screw rod (12) of the bolt (1) to fix the screw rod (12); A heating component (3) is arranged on the outside of the nut (11) and is suitable for heating the nut (11); A cooling component (4) adapted to cool the screw (12); The driving assembly (5) is suitable for being connected to the nut (11) and driving the nut (11) to rotate relative to the screw rod (12).

2. The disassembly device according to claim 1, characterized in that: The heating component (3) comprises: A heating element (31) is disposed on the outer side of the nut (11) and is suitable for heating the nut (11); The heat-insulating layer (32) is arranged on the outer side of the heating element (31) and is suitable for keeping the nut (11) warm.

3. The disassembly device according to claim 2, characterized in that: The heating component (3) comprises: A temperature detection element (33) connected to the heating element (31); A temperature controller (34) is connected to the temperature detection element (33) and is suitable for controlling the heating temperature of the heating element (31).

4. The disassembly device according to claim 2, characterized in that: The heating element (31) is a ceramic heater; and / or, the thermal insulation layer (32) is a fire-resistant fiber material; And / or, the heating element (31) comprises a plurality of separately connected heating units.

5. The disassembly device according to any one of claims 1 to 4, characterized in that: The cooling component (4) comprises: An air inlet member (41) adapted to introduce low-temperature gas to the screw (12); And / or, a refrigeration device (42), connected to the air inlet (41), suitable for transmitting the low-temperature gas to the air inlet (41).

6. The disassembly device according to any one of claims 1 to 4, characterized in that: The driving assembly (5) comprises: A first driving member (51); A connecting member (52) has one end connected to the first driving member (51) and the other end suitable for connecting to the nut (11) and driving the nut (11) to rotate under the drive of the first driving member (51).

7. The disassembly device according to claim 6, characterized in that: A first plug-in portion (111) is provided at the end of the nut (11), and a second plug-in portion (521) matching with the first plug-in portion (111) is provided at one side of the connecting piece (52).

8. The disassembly device according to claim 6, characterized in that: The driving assembly (5) comprises: a second driving member (53) fixedly connected to the first driving member (51) and adapted to drive the first driving member (51) to move toward or away from the screw rod (12); And / or, a guide member (54), the first driving member (51) is arranged on the guide member (54), and the first driving member (51) moves relative to the guide member (54).

9. The disassembly device according to any one of claims 1 to 4, characterized in that: The disassembly device comprises: A shell (6), the shell (6) comprising a first cavity (61), a second cavity (62) and a third cavity (63) which are fixedly connected in sequence, and the first cavity (61), the second cavity (62) and the third cavity (63) are respectively provided with a first opening; The driving component (5) is arranged in the first cavity (61), the heating component (3) is arranged in the second cavity (62), and the fixing component (2) and the cooling component (4) are arranged in the third cavity (63); The connecting end of the nut (11) and the screw rod (12) is arranged in the second cavity (62), and the other end of the nut (11) is arranged in the first cavity (61); the screw rod (12) is arranged in the third cavity (63).

10. The disassembly device according to claim 9, characterized in that: A first partition (64) is provided at the connection between the first cavity (61) and the second cavity (62), and a second partition (65) is provided at the connection between the second cavity (62) and the third cavity (63). Both the first partition (64) and the second partition (65) are provided with a second opening, and the second opening is suitable for allowing the nut (11) to pass through.

11. The disassembly device according to claim 9, characterized in that: The disassembly device comprises: A cover plate (7), the cover plate (7) being arranged to cover the first opening; And / or, a base (8) is arranged at the bottom of the shell (6).

12. The disassembly device according to claim 11, characterized in that: The disassembly device comprises: A magnetic attraction member (9) is arranged on the lower side of the base (8); And / or, a sliding member (10) is arranged below the base (8).

13. The disassembly device according to any one of claims 1 to 4, characterized in that: The fixing assembly (2) comprises at least two fixing members (21), and the at least two fixing members (21) are arranged on both sides of the screw rod (12) and are suitable for fixing the screw rod (12).

14. The disassembly device according to claim 13, characterized in that: The fixing assembly (2) is provided with at least two groups; and / or, at least one set of the fixing components (2) is arranged near the connection between the nut (11) and the screw rod (12); And / or, the fixing assembly (2) comprises three fixing members (21); And / or, the fixing member (21) is a hydraulic rod; And / or, an anti-slip member (22) is provided between the fixing member (21) and the screw rod (12).

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