Heat insulation protection device and crown block

Abstract

The utility model discloses a heat insulation protection device which is applied to a crown block, the crown block comprises a crown block main beam, and the heat insulation protection device comprises a heat insulation assembly and a mounting seat; the heat insulation assembly comprises a bottom plate, a heat insulation plate and a cover plate, the bottom plate comprises a main plate body and a connecting part connected with the main plate body, the cover plate is fixedly connected with the connecting part, and the heat insulation plate is clamped and fixed between the main plate body and the cover plate; the mounting base is detachably connected with the connecting part, the mounting base is used for being fixedly connected with the outer wall face of the crown block main beam, and the crown block comprises the heat insulation protection device and further comprises a crown block vertical beam and the crown block main beam erected on the crown block vertical beam; the mounting base is fixed to the outer wall face of the crown block main beam so that the heat insulation assembly can be located on the outer side of the crown block main beam, and according to the technical scheme, the influence of heat on the crown block can be reduced, and deformation and damage caused by thermal expansion of the crown block are reduced.

Description

Technical Field

[0001] The present application relates to the technical field of overhead cranes, and in particular to a heat insulation protection device and an overhead crane using the heat insulation protection device. Background Art

[0002] In the field of electrolytic aluminum, overhead cranes are used to transport raw materials to electrolytic cells, carry products, and provide a working platform for equipment inspection and maintenance operations. However, when performing these tasks, the bottom of the overhead crane main beam is directly affected by the environment above the electrolytic cell. During the electrolytic aluminum process, the electrolytic cell produces a large amount of smoke and corrosive gases, as well as high-temperature baking and radiation. The main beam of the overhead crane may expand thermally, causing deformation and displacement if it is exposed to high temperature and corrosive environments for a long time. This will not only affect the normal operation of the overhead crane, but also increase the difficulty of repair and maintenance. Utility Model Content

[0003] The embodiments of the present application provide a heat insulation protection device and an overhead crane, which can reduce the impact of heat on the overhead crane and reduce deformation and damage of the overhead crane caused by thermal expansion.

[0004] In a first aspect, an embodiment of the present application provides a heat insulation protection device, which is applied to an overhead travelling crane, wherein the overhead travelling crane comprises an overhead travelling crane main beam, and the heat insulation protection device comprises a heat insulation component and a mounting seat;

[0005] The heat insulation assembly comprises a bottom plate, a heat insulation board and a cover plate, wherein the bottom plate comprises a main plate body and a connecting portion connected to the main plate body, the cover plate is fixedly connected to the connecting portion, and the heat insulation board is clamped and fixed between the main plate body and the cover plate;

[0006] The mounting seat is detachably connected to the connecting portion, wherein the mounting seat is used to be fixedly connected to the outer wall surface of the overhead travelling crane main beam.

[0007] In a possible implementation, the connecting portion is provided with a connecting hole, and the mounting seat is provided with a mounting hole;

[0008] The thermal insulation protection device also includes a fixing device, which includes a bolt and at least two nuts. The bolt passes through the connecting hole and the mounting hole, and the two nuts are threadedly connected to the bolt in sequence to fix the connecting part and the mounting seat.

[0009] In a possible implementation, the mounting seat includes a first mounting portion, a transition portion, and a second mounting portion that are sequentially connected; the first mounting portion is provided with the mounting hole, and the second mounting portion is welded to the overhead travelling carriage main beam.

[0010] In a possible implementation, an outer surface of the bottom plate is provided with an anti-thermal radiation material layer; and / or an outer surface of the cover plate is provided with an anti-thermal radiation material layer.

[0011] In a possible implementation, the thermal insulation board is a ceramic fiberboard.

[0012] In the second aspect, an embodiment of the present application provides an overhead crane, comprising the above-mentioned thermal insulation protection device, and also comprising an overhead crane vertical beam and an overhead crane main beam mounted on the overhead crane vertical beam; the mounting seat is fixed to the outer wall surface of the overhead crane main beam so that the thermal insulation assembly is located on the outer side of the overhead crane main beam.

[0013] In a possible implementation, the thermal insulation assembly is located below the overhead traveling crane main beam; wherein the length of the thermal insulation assembly is not less than the length of the overhead traveling crane main beam, and the width of the thermal insulation assembly is greater than the width of the overhead traveling crane main beam.

[0014] In a possible implementation, in the height direction, there is a first gap between the thermal insulation assembly and the overhead travelling crane main beam, and the first gap is no greater than 90 mm and no less than 70 mm.

[0015] In a possible implementation, the thermal insulation protection device is provided in plurality, and the plurality of thermal insulation protection devices are arranged at intervals in the length direction;

[0016] There is a second gap between two adjacent thermal insulation components, and the second gap is no greater than 6 mm and no less than 4 mm.

[0017] In one possible implementation, the overhead crane also includes a tool trolley maintenance platform, the thermal insulation protection device is provided below the tool trolley maintenance platform, and the mounting seat is connected to the tool trolley maintenance platform so that the thermal insulation assembly covers the tool trolley maintenance platform in the length direction and the width direction.

[0018] Based on the heat insulation protection device and the overhead travelling crane of the embodiment of the present application, an effective heat insulation layer is formed by the heat insulation protection device in a high temperature environment to block the conduction and radiation of heat energy. In this way, the high temperature will not directly act on the main beam of the overhead travelling crane and the maintenance platform of the tool vehicle, thereby protecting them from damage by the high temperature. The heat insulation protection device can prevent the influence of heat on the overhead travelling crane, reduce the deformation and damage of the overhead travelling crane caused by thermal expansion, and extend the service life of the overhead travelling crane. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0020] Figure 1 It is a schematic diagram of the assembly of the main beam of the overhead travelling crane and the heat insulation protection device according to the utility model;

[0021] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0022] Figure 3 It is a schematic diagram of the assembly of the main beam of the overhead travelling crane and the heat insulation protection device according to the utility model from another perspective;

[0023] Figure 4 for Figure 3 A partial enlarged view of point B in the middle;

[0024] Figure 5 It is a structural schematic diagram of the heat insulation protection device according to the utility model;

[0025] Figure 6 It is a structural schematic diagram of the mounting base according to the utility model.

[0026] Description of Figure Numbers:

[0027] 10. heat insulation protection device; 100. heat insulation assembly; 110. bottom plate; 111. main plate body; 112. connection part; 120. heat insulation board; 130. cover plate; 200. mounting seat; 210. first mounting part; 220. transition part; 230. second mounting part; 300. fixing device; 310. bolt; 320. nut;

[0028] 20. Overhead crane main beam.

[0029] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0030] In order to make the objectives, technical solutions and advantages of the present application clearer, the following part will further describe the embodiments of the present application in detail in conjunction with the accompanying drawings.

[0031] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0032] In the description of the present application, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances. In addition, in the description of the present application, unless otherwise specified, "multiple" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0034] See also Figure 1 to Figure 2 The embodiment of the present application proposes a thermal insulation protection device 10 and an overhead crane, which includes the thermal insulation protection device 10, a tool car maintenance platform (not shown in the figure), an overhead crane vertical beam (not shown in the figure), an overhead crane main beam 20, a hoist (not shown in the figure), a drive system and a control system and other components or modules that can realize the operation of the overhead crane.

[0035] The crane main beam 20 is a horizontal beam of the crane, which is mounted on the crane vertical beam and is used to support and laterally move the crane's sling and load. The sling is suspended under the crane main beam 20 and is used to lift and carry goods. It can be in the form of a hook, a clamp, a clamp, etc. The drive system may include components such as a motor, a transmission device, and a controller. They work together to drive the crane to move laterally along the sling and lift the goods. The control system may include devices such as a control panel, buttons, and a remote controller. Through the control system, the operator can perform operations such as moving, lifting, and stopping the crane. The tool car maintenance platform can be set at one end of the crane main beam 20 or one side of the crane main beam 20 to facilitate the operator to repair and replace the sling, spray paint, clean, etc. The tool car maintenance platform can be mounted on the crane vertical beam; it can also be movable and can move laterally along the crane beam, and this application does not limit this.

[0036] When the overhead crane is working, if the ambient temperature is too high, thermal radiation may affect the service life of the overhead crane main beam 20. For example, in the field of electrolytic aluminum, the overhead crane needs to transport raw materials to the electrolytic cell, carry products, or provide a working platform for maintenance personnel to overhaul and maintain equipment. In these tasks, the bottom of the overhead crane main beam 20 is directly affected by the flue gas, corrosive gas, high temperature baking and radiation above the electrolytic cell, which can easily cause the overhead crane main beam 20 to deform and shift. The thermal insulation protection device 10 of the present application is fixed to the outer wall surface of the overhead crane main beam 20 through the mounting seat 200, so that the thermal insulation assembly 100 is located on the outside of the overhead crane main beam 20, thereby isolating the damage of thermal radiation to the overhead crane main beam 20 and effectively reducing the impact of the on-site environment on the overhead crane.

[0037] The embodiment of the present application also provides a heat insulation protection device 10 under the tool cart maintenance platform, and the mounting base 200 is connected to the tool cart maintenance platform so that the heat insulation assembly 100 covers the tool cart maintenance platform in the length and width directions, thereby preventing the operator from being harmed by heat radiation when performing maintenance or other work.

[0038] See also Figure 4 The heat insulation protection device 10 includes a heat insulation component 100 and a mounting seat 200. The mounting seat 200 is detachably connected to the heat insulation component 100, and the heat insulation component 100 includes a bottom plate 110, a heat insulation board 120 and a cover plate 130. The bottom plate 110 includes a main board body 111 and a connecting portion 112 connected to the main board body 111, and the cover plate 130 is fixedly connected to the connecting portion 112, and the heat insulation board 120 is clamped and fixed between the main board body 111 and the cover plate 130. Specifically, the main board body 111 is connected with the connecting portion 112 on both sides along the width direction, and the connecting portion 112 is arranged at an angle with the main board body 111, so that the bottom plate 110 can have a mounting groove with an open top. During installation, the heat insulation board 120 is located in the mounting groove, and the cover plate 130 is fixedly connected to the bottom plate 110, so that the heat insulation board 120 can be clamped and fixed between the main board body 111 and the cover plate 130. Moreover, the top of the connecting portion 112 is detachably connected to the mounting seat 200, which facilitates the assembly of the heat insulation assembly 100 and the mounting seat 200. It is understandable that in order to improve the stability of the heat insulation assembly 100 and the overhead travelling crane main beam 20, at least two mounting seats 200 may be spaced apart on both sides of the heat insulation assembly 100.

[0039] In some structural forms, the connecting portion 112 can be a plate structure, that is, a connecting plate connected to the main board body 111. In this way, the main board body 111 and the connecting plate can be formed on a sheet metal part by using processes such as stamping or bending, thereby increasing the structural strength of the bottom plate 110, simplifying the processing technology, and being suitable for commercial mass production. Of course, the connecting portion 112 can also adopt a block structure, that is, a connecting block, and multiple connecting blocks are distributed along the width direction of the main board body 111 to reduce material usage and reduce costs. Here, the present application does not limit the specific properties of the connecting portion 112.

[0040] The connection part 112 and the main board body 111 of the present application are an integrated structure. Furthermore, the bottom plate 110 can be made of sheet metal. The connection part 112 and the main board body 111 are formed by stamping the sheet metal parts, so that the stability of the connection between the connection part 112 and the main board body 111 can be improved. In addition, this processing method has the advantages of high production efficiency and low labor cost. The embodiment of the present application does not limit the specific material between the bottom plate 110 and the cover plate 130, such as but not limited to stainless steel, aluminum, iron, etc. For example, the bottom plate 110 and the cover plate 130 are made of cold-rolled thin steel plates with a thickness of 2-3mm and a material of Q235A.

[0041] The specific connection method between the base plate 110 and the cover plate 130 is not limited here. For example, the base plate 110 and the cover plate 130 can be detachably connected or non-detachably connected; when the base plate 110 and the cover plate 130 are detachably connected, the cover plate 130 can be, but is not limited to, connected to the base plate 110 by one or more of the methods such as screw connection or snap connection; when the base plate 110 and the cover plate 130 are non-detachably connected, the cover plate 130 can be, but is not limited to, connected to the base plate 110 by methods such as gluing or welding.

[0042] Further, in order to facilitate the detachable connection between the mounting seat 200 and the connecting portion 112. A connecting hole (not shown in the figure) is provided on the connecting portion 112, and a mounting hole (not shown in the figure) is provided on the mounting seat 200. The heat insulation protection device 10 of the embodiment of the present application also includes a fixing device 300, and the fixing device 300 includes a bolt 310 and at least two nuts 320, the bolt 310 is provided with a connecting hole and a mounting hole, and the two nuts 320 are threadedly connected to the bolt 310 in sequence to fix the connecting portion 112 and the mounting seat 200. In the embodiment of the present application, a fixing form of two nuts 320 is adopted. The first nut 320 is used to fasten the connecting portion 112 and the mounting seat 200, and the second nut 320 is mainly used to lock the first nut 320 to prevent it from loosening, so that the firmness and stability of the connection can be effectively ensured. Of course, in some other implementations, the mounting seat 200 and the connecting portion 112 can also be connected by a buckle, and the present application does not limit this.

[0043] Specifically, during the installation operation, the second mounting portion 230 of the mounting seat 200 is welded to the side wall surface of the overhead traveling crane main beam 20, the heat insulation board 120 is placed on the bottom plate 110, and the cover plate 130 and the bottom plate 110 are fixedly connected, so as to assemble the heat insulation assembly 100, and then the top of the connecting portion 112 of the bottom plate 110 is fixedly connected to the first mounting portion 210 by bolts 310 and two nuts 320, so that the heat insulation assembly 100 can be installed below the overhead traveling crane main beam 20. The heat insulation protection device 10 of the embodiment of the present application can form an effective heat insulation layer in a high temperature environment to block the conduction and radiation of heat energy. In this way, the high temperature will not directly act on the overhead traveling crane main beam 20 and the tool vehicle maintenance platform, thereby protecting them from damage by high temperature. The heat insulation protection device 10 prevents the influence of heat on the overhead traveling crane structure, reduces deformation and damage caused by thermal expansion, and prolongs the service life of the overhead traveling crane. At the same time, the heat insulation protection device 10 can also protect the operator from damage by heat radiation. When overhauling the overhead crane, the operator usually needs to approach the overhead crane main beam 20 and the tool trolley overhaul platform, and the heat insulation protection device 10 can effectively reduce the heat radiation received by these parts and protect the operator from being harmed by heat energy.

[0044] In some structural forms, see Figure 6 The mounting seat 200 includes a first mounting portion 210, a transition portion 220, and a second mounting portion 230 which are connected in sequence. The first mounting portion 210 is provided with a mounting hole, and the second mounting portion 230 is welded to the main beam 20 of the overhead travelling vehicle. It can be understood that the width of the heat insulation assembly 100 is greater than the width of the main beam 20 of the overhead travelling vehicle, so that the first mounting portion 210 and the second mounting portion 230 are connected by the transition portion 220, so that the heat insulation assembly 100 can be installed under the main beam 20 of the overhead travelling vehicle through the mounting seat 200. In addition, the mounting seat 200 can be formed by bending the first mounting portion 210, the transition portion 220, and the second mounting portion 230 with a whole sheet metal part, so that the structural strength of the mounting seat 200 can be increased and the processing technology can be simplified.

[0045] In some embodiments, the heat insulation board 120 is a ceramic fiberboard. The ceramic fiberboard can be a ceramic fiberboard containing zirconium, such as but not limited to zirconium oxide fiberboard, zirconium silicon fiberboard and zirconium molybdate fiberboard. The above-mentioned ceramic fiberboards can effectively prevent the conduction of heat under high temperature conditions. They have low thermal conductivity and excellent insulation properties, which can reduce the loss and transfer of heat, thereby achieving effective thermal isolation. In addition, they also have excellent fire resistance and chemical corrosion resistance, and can withstand the erosion of extreme working environments and chemical media.

[0046] Please return to Figure 1, the mounting seat 200 is fixed to the side wall surface of the crane main beam 20 so that the heat insulation assembly 100 is located below the crane main beam 20. Among them, the length of the heat insulation assembly 100 is not less than the length of the crane main beam 20, and the width of the heat insulation assembly 100 is greater than the width of the crane main beam 20. It can be understood that in the field of electrolytic aluminum, the crane main beam 20 is mainly subjected to heat radiation at the bottom, so the heat insulation assembly 100 is arranged below the crane main beam 20 and covers the crane main beam 20 in the length direction, and the width of the heat insulation assembly 100 is greater than the width of the crane main beam 20, so that most of the heat radiation can be isolated in the width direction. In short, the heat insulation assembly 100 of the embodiment of the present application can isolate and protect the crane main beam 20 from heat while reducing costs. Of course, the heat insulation assembly 100 can also be arranged below, on the left side and on the right side of the crane main beam 20, and the present application does not limit this.

[0047] For further information, see Figure 3 and Figure 4 In the height direction, there is a first gap H between the heat insulation assembly 100 and the crane main beam 20, and the first gap H is not greater than 90 mm and not less than 70 mm. First, to prevent the heat on the heat insulation assembly 100 from being transferred to the crane main beam 20 and affecting the temperature of the crane main beam 20; second, the heat insulation assembly 100 and the crane main beam 20 may be affected by temperature changes during operation, and temperature changes will cause thermal expansion and contraction of objects, and the first gap can prevent the stress and deformation caused by thermal expansion between the heat insulation assembly 100 and the crane main beam 20 from squeezing each other.

[0048] In some structural forms, a plurality of heat insulation protection devices 10 are provided, and the plurality of heat insulation protection devices 10 are arranged at intervals in the length direction. The length of each heat insulation assembly 100 can be set to about 1 meter. Figure 1 and Figure 2 There is a second gap D between two adjacent thermal insulation components 100, and the second gap D is not greater than 6 mm and not less than 4 mm. When the main beam 20 of the overhead traveling vehicle is deformed, the second gap D can prevent the two adjacent thermal insulation components 100 from squeezing and colliding with each other, thereby reducing the degree of force concentration and avoiding damage or failure of the thermal insulation board 120 caused by excessive deformation. The second gap D can also provide a certain amount of accommodation space for thermal expansion and contraction between the thermal insulation components 100. When the temperature changes, the thermal insulation component 100 will produce a certain degree of deformation due to thermal expansion or contraction. The second gap D allows the thermal insulation component 100 to have a certain amount of expansion and contraction space in the length direction to avoid excessive stress and deformation due to thermal expansion.

[0049] Further, the outer surface of the bottom plate 110 is provided with an anti-thermal radiation material layer (not shown in the figure). The outer surface of the cover plate 130 is provided with an anti-thermal radiation material layer. The anti-thermal radiation material layer can be a high temperature resistant paint such as a silicon-based high temperature resistant paint, a phenolic resin high temperature resistant paint, a polyimide high temperature resistant paint, a ceramic high temperature resistant paint and an aluminum silicate high temperature resistant paint. High temperature resistant paint can form a protective film under high temperature environment, play a role of heat insulation and isolation, avoid the conduction and radiation of heat energy, and protect the surface of the bottom plate 110 from high temperature damage. High temperature resistant paint can also reduce the oxidation rate of the surface of the bottom plate 110 and the cover plate 130, thereby protecting the bottom plate 110 and the cover plate 130 from oxidation, corrosion and wear at high temperature. These high temperature resistant paints have excellent high temperature tolerance, corrosion resistance and chemical resistance. It can be understood that the heat insulation assembly 100 is located between the electrolytic cell and the overhead crane main beam 20, and the surface of the bottom plate 110 and the cover plate 130 is coated with high temperature resistant paint, and the high temperature resistant paint can reduce the heat radiation received by the bottom plate 110 and the cover plate 130. At the same time, it also avoids corrosive corrosion of the bottom plate 110 and the cover plate 130. In addition, the color of the anti-heat radiation material layer can be consistent with the body color of the overhead traveling vehicle main beam 20, making the appearance more beautiful.

[0050] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "up", "down", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0051] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A heat insulation protection device, applied to a crane, the crane comprising a crane main beam, characterized in that: The thermal insulation protection device comprises a thermal insulation component and a mounting seat; The heat insulation assembly comprises a bottom plate, a heat insulation board and a cover plate, wherein the bottom plate comprises a main plate body and a connecting portion connected to the main plate body, the cover plate is fixedly connected to the connecting portion, and the heat insulation board is clamped and fixed between the main plate body and the cover plate; The mounting seat is detachably connected to the connecting portion, wherein the mounting seat is used to be fixedly connected to the outer wall surface of the overhead travelling crane main beam.

2. The heat insulation protection device according to claim 1, characterized in that: The connecting portion is provided with a connecting hole, and the mounting seat is provided with a mounting hole; The thermal insulation protection device also includes a fixing device, which includes a bolt and at least two nuts. The bolt passes through the connecting hole and the mounting hole, and the two nuts are threadedly connected to the bolt in sequence to fix the connecting part and the mounting seat.

3. The heat insulation protection device according to claim 2, characterized in that: The mounting seat comprises a first mounting portion, a transition portion and a second mounting portion connected in sequence; The first mounting portion is provided with the mounting hole, and the second mounting portion is welded to the overhead travelling crane main beam.

4. The heat insulation protection device according to any one of claims 1 to 3, characterized in that: The outer surface of the bottom plate is provided with a layer of anti-heat radiation material; and / or, The outer surface of the cover plate is provided with an anti-heat radiation material layer.

5. The heat insulation protection device according to any one of claims 1 to 3, characterized in that: The heat insulation board is a ceramic fiber board.

6. An overhead crane, characterized in that: The heat insulation protection device comprises any one of claims 1 to 5, and further comprises a crane vertical beam and a crane main beam mounted on the crane vertical beam; The mounting seat is fixed to the outer wall surface of the crown block main beam so that the heat insulation assembly is located outside the crown block main beam.

7. The overhead travelling crane according to claim 6, characterized in that: The heat insulation assembly is located below the main beam of the overhead travelling vehicle; Wherein, the length of the heat insulation assembly is not less than the length of the overhead travelling crane main beam, and the width of the heat insulation assembly is greater than the width of the overhead travelling crane main beam.

8. The overhead travelling crane according to claim 6, characterized in that: In the height direction, there is a first gap between the thermal insulation assembly and the overhead travelling crane main beam, and the first gap is no greater than 90 mm and no less than 70 mm.

9. The overhead travelling crane according to claim 8, characterized in that: There are multiple thermal insulation protection devices, and the multiple thermal insulation protection devices are arranged at intervals in the length direction of the main beam of the overhead travelling vehicle; There is a second gap between two adjacent thermal insulation components, and the second gap is not greater than 6 mm and not less than 4 mm.

10. The overhead travelling crane according to any one of claims 6 to 9, characterized in that: The overhead crane also includes a tool trolley maintenance platform, the thermal insulation protection device is provided below the tool trolley maintenance platform, and the mounting seat is connected to the tool trolley maintenance platform so that the thermal insulation assembly covers the tool trolley maintenance platform in the length direction and the width direction.

Images