Furnace door supporting device

Abstract

The utility model discloses a furnace door supporting device, and belongs to the technical field of hot rolling. The furnace door supporting device is used for supporting a furnace door and provided with a first supporting face, a second supporting face and a third supporting face. After the furnace door supporting device is used, when a furnace door chain is replaced, the first supporting face of the furnace door supporting device is supported on the roller way frame, the second supporting face is supported on the furnace door end wall, and after a furnace door is put down, the furnace door is supported on the third supporting face. Therefore, the safety of the sand sealing groove and the sand sealing cutter on the furnace door is guaranteed, the sand sealing groove and the sand sealing cutter on the furnace door are prevented from being damaged to a certain extent, and stable operation of hot rolling is guaranteed.

Description

Technical Field

[0001] The present application belongs to the technical field of hot rolling, and in particular relates to a furnace door supporting device. Background Art

[0002] The hot rolling heating furnace is equipped with furnace doors on both the steel loading and steel discharging sides. The slabs are loaded into or taken out of the furnace after the furnace doors are opened. The furnace doors can be raised and lowered by hydraulic drive or motor drive, and the furnace doors are connected to the transmission mechanism through chains.

[0003] In the related art, when replacing the furnace door chain, the furnace door needs to be lowered to the lowest position, the furnace door needs to be hung on the sand sealing groove of the furnace body, and the pin connecting the chain and the furnace door needs to be removed after the chain is loosened.

[0004] As the overall weight of the furnace door exceeds 10 tons, hanging the furnace door on the sand sealing groove of the furnace body will easily damage the sand sealing groove or the sand sealing knife on the furnace door body. Damage to the sand sealing groove or the sand sealing knife will cause scratches and interference during the movement of the furnace door, affecting the normal loading and production of steel. In addition, the sand sealing knife of the furnace door combines with the sand sealing groove of the furnace body to seal the furnace door. If damaged, flames will spray out of the furnace, which will cause the furnace door body to burn out in the long run. Utility Model Content

[0005] The present application aims to at least to some extent solve the technical problem in the related art that the sand sealing knife and the sand sealing groove are easily damaged when the furnace door chain is replaced. To this end, the present application provides a furnace door supporting device.

[0006] A furnace door supporting device provided in an embodiment of the present application is used to support a furnace door, wherein a furnace door end wall is arranged on the inner side of the furnace door, and a roller frame is arranged on the outer side;

[0007] The furnace door supporting device is provided with a first supporting surface, a second supporting surface and a third supporting surface which are parallel to each other, the height of the third supporting surface is higher than the first supporting surface and the second supporting surface, and the height of the second supporting surface is higher than the first supporting surface;

[0008] The first supporting surface is used to contact with the upper end surface of the roller frame, the second supporting surface is used to contact with the upper end surface of the furnace door end wall, and the third supporting surface is used to contact with the lower end surface of the furnace door;

[0009] The height between the first supporting surface and the second supporting surface is consistent with the height between the upper end surface of the furnace door end wall and the upper end surface of the roller frame, so that when the furnace door supporting device is in use, the third supporting surface is horizontal.

[0010] In some embodiments, the furnace door supporting device includes a first frame and a second frame, the first frame is longer than the second frame, and the length directions of the first frame and the second frame are parallel; along the length direction of the first frame, the second frame is located on one side of the first frame and below the first frame; the first frame is fixedly connected to the second frame; the upper end surface of the first frame is the third supporting surface, the lower end surface is the second supporting surface, and the lower end surface of the second frame is the first supporting surface.

[0011] In some embodiments, the first frame includes a first connecting plate, a first end plate and a second end plate, the first end plate and the second end plate are parallel and oppositely arranged; the first connecting plate is located between the first end plate and the second end plate and is connected to the first end plate and the second end plate; the end surface of the first end plate facing away from the second end plate is the third supporting surface, and the end surface of the second end plate facing away from the first end plate is the second supporting surface.

[0012] In some embodiments, the first frame further includes a plurality of second connecting plates, which are sequentially arranged along the length direction of the first frame, located between the first end plate and the second end plate and connected to the first end plate, the second end plate and the first connecting plate.

[0013] In some embodiments, the second frame includes a third connecting plate, a third end plate and a fourth end plate, the third end plate and the fourth end plate are arranged parallel and opposite to each other, the third connecting plate is located between the third end plate and the fourth end plate and is connected to the third end plate and the fourth end plate;

[0014] The third end plate is located below the second end plate, parallel to the second end plate and fixedly connected to the second end plate, and the end surface of the fourth end plate facing away from the third end plate is the first supporting surface.

[0015] In some embodiments, the third end plate and the second end plate are fixed by welding.

[0016] In some embodiments, the second frame further includes a plurality of fourth connecting plates, which are sequentially arranged along the length direction of the second frame, located between the third end plate and the fourth end plate and connected to the third end plate, the fourth end plate and the third connecting plate.

[0017] In some embodiments, the furnace door supporting device further includes a lifting ear, and the lifting ear is disposed on the first frame.

[0018] In some embodiments, the furnace door supporting device is provided with a lifting lug, and the lifting lug is located above the second frame.

[0019] In some embodiments, the furnace door supporting device further includes a counterweight, which is fixedly connected to the first frame and / or the second frame and is located beside the second frame.

[0020] The utility model has at least the following beneficial effects:

[0021] The furnace door support device of the present application is used to support the furnace door, and is provided with a first support surface, a second support surface and a third support surface. After using the device, when replacing the furnace door chain, the first support surface of the furnace door support device of the present application is supported on the roller frame, and the second support surface is supported on the end wall of the furnace door. After the furnace door is lowered, the furnace door is supported on the third support surface. The furnace door support device of the present application bears the weight of the furnace door, avoiding the furnace door from being hung in the sand sealing groove of the furnace body, thereby ensuring the safety of the sand sealing groove and the sand sealing knife on the furnace door, avoiding damage to the sand sealing groove and the sand sealing knife on the furnace door to a certain extent, and ensuring the stable operation of hot rolling. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 A schematic structural diagram of a furnace door support device in one or more embodiments of the present application is shown.

[0024] Figure 2 Shows Figure 1 Top view of the .

[0025] Figure 3 Shows Figure 1 Bottom view of .

[0026] Figure 4 Shows Figure 1 Left view of .

[0027] Figure 5 A schematic diagram of the structure of the furnace door support device in use in one or more embodiments of the present application is shown.

[0028] Figure numerals: 100 - furnace door supporting device, 100a - first supporting surface, 100b - second supporting surface, 100c - third supporting surface, 110 - first frame, 111 - first end plate, 112 - second end plate, 113 - first connecting plate, 114 - second connecting plate, 120 - second frame, 121 - third end plate, 122 - fourth end plate, 123 - third connecting plate, 124 - fourth connecting plate, 130 - counterweight, 140 - lifting ear, 200 - furnace door, 300 - furnace door end wall, 400 - roller frame. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0033] The hot rolling heating furnace is equipped with furnace doors on both the steel loading and steel discharging sides. The slabs are loaded into or taken out of the furnace after the furnace doors are opened. The furnace doors can be raised and lowered by hydraulic drive or motor drive, and the furnace doors are connected to the transmission mechanism through chains.

[0034] In the related art, when replacing the furnace door chain, the furnace door needs to be lowered to the lowest position, the furnace door needs to be hung on the sand sealing groove of the furnace body, and the pin connecting the chain and the furnace door needs to be removed after the chain is loosened.

[0035] As the overall weight of the furnace door exceeds 10 tons, hanging the furnace door on the sand sealing groove of the furnace body will easily damage the sand sealing groove or the sand sealing knife on the furnace door body. Damage to the sand sealing groove or the sand sealing knife will cause scratches and interference during the movement of the furnace door, affecting the normal loading and production of steel. In addition, the sand sealing knife of the furnace door combines with the sand sealing groove of the furnace body to seal the furnace door. If damaged, flames will spray out of the furnace, which will cause the furnace door body to burn out in the long run.

[0036] Therefore, in the related art, there is a technical problem that the sand sealing knife and the sand sealing groove are easily damaged when replacing the furnace door chain. The embodiment of the present application provides a furnace door support device, which can at least solve the above technical problem to a certain extent.

[0037] The present application is described below with reference to the accompanying drawings and specific embodiments:

[0038] The embodiment of the present application provides a furnace door supporting device 100 . The furnace door supporting device 100 provided in the embodiment of the present application can support the furnace door 200 when the chain of the furnace door 200 is replaced.

[0039] The furnace door support device 100 of the present application is used to support the furnace door 200. The inner side of the furnace door 200 is provided with a furnace door end wall 300, and the outer side of the furnace door 200 is provided with a roller frame 400. Figure 5 As shown. The furnace door end wall 300 is located on the inner side of the furnace door 200, and cooperates with the furnace door 200 to seal the furnace body. The roller frame 400 is arranged on the outer side of the furnace door 200. The roller frame 400 is used to install the roller, which is used to transport the slabs of the heating furnace. Taking the steel loading side as an example, the slabs are transferred to the roller in front of the furnace door 200 of the heating furnace, the furnace door 200 of the heating furnace is opened, and the slabs are transported to the heating furnace by the steel loading machine for heating.

[0040] For example Figure 5As shown, the furnace door supporting device 100 of the present application is provided with a first supporting surface 100a, a second supporting surface 100b and a third supporting surface 100c which are parallel to each other. The height of the third supporting surface 100c is higher than the first supporting surface 100a and the second supporting surface 100b. The height of the second supporting surface 100b is higher than the first supporting surface 100a. The first supporting surface 100a is used to contact with the upper end surface of the roller frame 400, the second supporting surface 100b is used to contact with the upper end surface of the furnace door end wall 300, and the third supporting surface 100c is used to contact with the lower end surface of the furnace door 200.

[0041] In actual situations, the height of the upper end surface of the furnace door end wall 300 is different from the height of the upper end surface of the roller frame 400, and the height of the upper end surface of the furnace door end wall 300 is higher than the height of the upper end surface of the roller frame 400. Therefore, in the furnace door supporting device 100 of the present application, the height of the second supporting surface 100b is higher than the height of the first supporting surface 100a, and the height from the first supporting surface 100a to the second supporting surface 100b is consistent with the height from the upper end surface of the furnace door end wall 300 to the upper end surface of the roller frame 400, so as to ensure that after the furnace door supporting device 100 is placed on the furnace door end wall 300 and the roller frame 400, the third supporting surface 100c is in a horizontal state.

[0042] like Figure 5 As shown, when the furnace door supporting device 100 of the present application is used, the furnace door supporting device 100 is placed on the roller frame 400 and the furnace door end wall 300. Specifically, the first supporting surface 100a contacts the upper end surface of the roller frame 400, the second supporting surface 100b contacts the upper end surface of the furnace door end wall 300, and the third supporting surface 100c is horizontal. At this time, when the furnace door 200 needs to replace the furnace door 200 chain, the furnace door 200 is lowered, and the lower end surface of the furnace door 200 and the third supporting surface 100c are in contact with each other. The furnace door supporting device 100 supports the furnace door 200, bears the weight of the furnace door 200, and keeps the furnace door 200 balanced, so that the weight of the furnace door 200 is transferred to the roller frame 400 and the furnace door end wall 300, avoiding the furnace door 200 from being hung in the sand sealing groove of the furnace body, thereby ensuring the safety of the sand sealing groove and the sand sealing knife on the furnace door 200, avoiding damage to the sand sealing groove and the sand sealing knife on the furnace door 200 to a certain extent, and ensuring the stable operation of hot rolling.

[0043] In some embodiments, such as Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the furnace door supporting device 100 includes a first frame 110 and a second frame 120. The first frame 110 is longer than the second frame 120, and the length directions of the first frame 110 and the second frame 120 are parallel. Along the length direction of the first frame 110, the second frame 120 is located on one side of the first frame 110 and below the first frame 110. The first frame 110 is fixedly connected to the second frame 120. The upper end surface of the first frame 110 is the third supporting surface 100c, and the lower end surface is the second supporting surface 100b. The lower end surface of the second frame 120 is the first supporting surface 100a. Figure 1 As shown, in some embodiments, the second frame 120 is located at the lower right of the first frame 110 .

[0044] After such design, the furnace door support device 100 is composed of a first frame 110 and a second frame 120 connected together. During processing, the first frame 110 and the second frame 120 can be processed separately, and then assembled to form the furnace door support device 100, which helps to reduce the difficulty of processing and manufacturing the furnace door support device 100. When in use, the first frame 110 is located on the roller frame 400, and the second frame 120 is located on the furnace door end wall 300. Generally, the weight of the furnace door support device 100 is more than 10 tons. Therefore, in order to ensure the supporting performance of the furnace door support device 100, the first frame 110 and the second frame 120 can be made of high-strength materials such as steel, such as steel plates, I-beams, angle steels, etc. There are various ways to fix the first frame 110 and the second frame 120, such as welding, bolting, etc.

[0045] In some embodiments, the first frame 110 includes a first connecting plate 113, a first end plate 111, and a second end plate 112. The first end plate 111 and the second end plate 112 are arranged parallel and opposite to each other. The first connecting plate 113 is located between the first end plate 111 and the second end plate 112 and connected to the first end plate 111 and the second end plate 112. The end surface of the first end plate 111 facing away from the second end plate 112 is the third supporting surface 100c, and the end surface of the second end plate 112 facing away from the first end plate 111 is the second supporting surface 100b. In other words, Figure 4 As shown, the first connecting plate 113 is perpendicular to the first end plate 111 and the second end plate 112, is located between the first end plate 111 and the second end plate 112, and is connected to the middle of the first end plate 111 and the second end plate 112. After such design, the cross section of the first frame 110 is in the shape of an "I", the upper end surface of the first end plate 111 is the third support surface 100c, and the lower end surface of the second end plate 112 is the second support surface 100b. The cross-sectional shape of the "I" shape can better withstand pressure and bending torsion, is not prone to overturning and deformation, and can make the bearing force more reasonably balanced, so as to better support the furnace door 200. At the same time, after such design, the structure of the first frame 110 is relatively simple, which facilitates the processing and manufacturing of the first frame 110.

[0046] In some embodiments, such as Figure 1 As shown, in order to enhance the strength of the first frame 110, the first frame 110 further includes a plurality of second connecting plates 114, which are sequentially arranged along the length direction of the first frame 110, and are located between the first end plate 111 and the second end plate 112 and connected to the first end plate 111, the second end plate 112 and the first connecting plate 113. With this design, the second connecting plates 114 and the first connecting plates 113 are connected to the first end plate 111 and the second end plate 112, and the second connecting plates 114 are also connected to the first connecting plates 113, thereby enhancing the strength of the first frame 110, making the structure of the first frame 110 more stable, and providing more stable support for the furnace door 200.

[0047] In some embodiments, the second frame 120 includes a third connecting plate 123, a third end plate 121 and a fourth end plate 122. The third end plate 121 and the fourth end plate 122 are arranged parallel and opposite to each other. The third connecting plate 123 is located between the third end plate 121 and the fourth end plate 122 and connected to the third end plate 121 and the fourth end plate 122. The third end plate 121 is located below the second end plate and is parallel to and fixedly connected to the second end plate 112. The end surface of the fourth end plate 122 facing away from the third end plate 121 is the first supporting surface 100a. In other words, Figure 4 As shown, the third connecting plate 123 is perpendicular to the third end plate 121 and the fourth end plate 122, is located between the third end plate 121 and the fourth end plate 122, and is connected to the middle of the third end plate 121 and the fourth end plate 122. After such design, the cross section of the second frame 120 is in the shape of an "I". The upper surface of the third end plate 121 and the lower surface of the second end plate 112 are parallel and fixedly connected, and the lower surface of the fourth end plate 122 is the first supporting surface 100a. The cross-sectional shape of the "I" shape can better withstand pressure and bending torsion, is not prone to overturning and deformation, and can make the bearing force more reasonably balanced, so that the second frame 120 can better support the furnace door 200. At the same time, after such design, the structure of the second frame 120 is relatively simple, which facilitates the processing and manufacturing of the second frame 120.

[0048] The third end plate 121 and the second end plate 112 are fixedly connected in various ways, such as welding, bolt connection, etc. In some embodiments, the third end plate 121 and the second end plate 112 are fixed by welding.

[0049] In some embodiments, such as Figure 1As shown, in order to enhance the strength of the second frame 120, the second frame 120 further includes a plurality of fourth connecting plates 124, which are sequentially arranged along the length direction of the second frame 120, and are located between the third end plate 121 and the fourth end plate 122 and connected to the third end plate 121, the fourth end plate 122 and the third connecting plate 123. With this design, the fourth connecting plate 124 and the third connecting plate 123 connect the third end plate 121 and the fourth end plate 122, and the fourth connecting plate 124 is also connected to the third connecting plate 123, thereby enhancing the strength of the second frame 120, so that the structure of the second frame 120 is more stable, so as to provide more stable support for the furnace door 200.

[0050] The furnace door support device 100 is heavy and difficult to carry manually, and is usually lifted by a crane. To facilitate the lifting of the furnace door support device 100, in some embodiments, the furnace door support device 100 also includes a lifting lug 140, which is disposed on the first frame 110.

[0051] In some embodiments, such as Figure 1 As shown, the furnace door supporting device 100 is provided with a lifting eye 140 , and the lifting eye 140 is located above the second frame 120 .

[0052] In order to maintain balance during lifting, the furnace door supporting device 100 can be lifted relatively horizontally onto the roller frame 400 and the furnace door end wall 300. In some embodiments, the furnace door supporting device 100 further includes a counterweight 130, which is fixedly connected to the first frame 110 and / or the second frame 120 and is located beside the second frame 120 to balance the weight on both sides of the furnace door supporting device 100, so as to facilitate horizontal lifting of the furnace door supporting device 100.

[0053] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0054] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0055] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A furnace door support device, characterized in that: Used to support a furnace door (200), wherein a furnace door end wall (300) is arranged on the inner side of the furnace door (200) and a roller frame (400) is arranged on the outer side; The furnace door supporting device (100) is provided with a first supporting surface (100a), a second supporting surface (100b) and a third supporting surface (100c) which are parallel to each other; the height of the third supporting surface (100c) is higher than the first supporting surface (100a) and the second supporting surface (100b); the height of the second supporting surface (100b) is higher than the first supporting surface (100a); The first supporting surface (100a) is used to contact the upper end surface of the roller frame (400), the second supporting surface (100b) is used to contact the upper end surface of the furnace door end wall (300), and the third supporting surface (100c) is used to contact the lower end surface of the furnace door (200); The height between the first supporting surface (100a) and the second supporting surface (100b) is consistent with the height between the upper end surface of the furnace door end wall (300) and the upper end surface of the roller frame (400), so that when the furnace door supporting device (100) is in use, the third supporting surface (100c) is horizontal.

2. The furnace door support device according to claim 1, characterized in that: The furnace door supporting device (100) comprises a first frame (110) and a second frame (120), wherein the first frame (110) is longer than the second frame (120), and the length directions of the first frame (110) and the second frame (120) are parallel; along the length direction of the first frame (110), the second frame (120) is located at one side of the first frame (110) and below the first frame (110); the first frame (110) and the second frame (120) are fixedly connected; the upper end surface of the first frame (110) is the third supporting surface (100c), and the lower end surface is the second supporting surface (100b), and the lower end surface of the second frame (120) is the first supporting surface (100a).

3. The furnace door supporting device according to claim 2, characterized in that: The first frame (110) comprises a first connecting plate (113), a first end plate (111) and a second end plate (112); the first end plate (111) and the second end plate (112) are parallel and arranged opposite to each other; the first connecting plate (113) is located between the first end plate (111) and the second end plate (112) and is connected to the first end plate (111) and the second end plate (112); the end surface of the first end plate (111) facing away from the second end plate (112) is the third supporting surface (100c), and the end surface of the second end plate (112) facing away from the first end plate (111) is the second supporting surface (100b).

4. The furnace door supporting device according to claim 3, characterized in that: The first frame (110) further includes a plurality of second connecting plates (114), which are arranged in sequence along the length direction of the first frame (110), are located between the first end plate (111) and the second end plate (112), and are connected to the first end plate (111), the second end plate (112), and the first connecting plate (113).

5. The furnace door supporting device according to claim 3, characterized in that: The second frame (120) comprises a third connecting plate (123), a third end plate (121) and a fourth end plate (122); the third end plate (121) and the fourth end plate (122) are arranged in parallel and opposite to each other; the third connecting plate (123) is located between the third end plate (121) and the fourth end plate (122) and is connected to the third end plate (121) and the fourth end plate (122); The third end plate (121) is located below the second end plate (112), parallel to and fixedly connected to the second end plate (112), and the end surface of the fourth end plate (122) facing away from the third end plate (121) is the first supporting surface (100a).

6. The furnace door supporting device according to claim 5, characterized in that: The third end plate (121) and the second end plate (112) are fixed by welding.

7. The furnace door supporting device according to claim 5, characterized in that: The second frame (120) also includes a plurality of fourth connecting plates (124), which are arranged in sequence along the length direction of the second frame (120), are located between the third end plate (121) and the fourth end plate (122), and are connected to the third end plate (121), the fourth end plate (122) and the third connecting plate (123).

8. The furnace door supporting device according to claim 5, characterized in that: The furnace door supporting device (100) further comprises a lifting ear (140), wherein the lifting ear (140) is arranged on the first frame (110).

9. The furnace door supporting device according to claim 8, characterized in that: The furnace door supporting device (100) is provided with a lifting lug (140), and the lifting lug (140) is located above the second frame (120).

10. The furnace door supporting device according to claim 9, characterized in that: The furnace door supporting device (100) further comprises a counterweight (130), wherein the counterweight (130) is fixedly connected to the first frame (110) and / or the second frame (120), and is located beside the second frame (120).

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