A transfer device for an air preheater tube box

Abstract

The application relates to the technical field of air preheater tube boxes, and discloses a transfer device for an air preheater tube box, which comprises a frame body and a bearing plate, the frame body comprises a plurality of fixed beams which are spaced apart along a first direction, the fixed beams extend along a second direction, a plurality of connecting beams are spaced apart along the second direction between two adjacent fixed beams, the two ends of the connecting beams are connected with the inner side surfaces of the two adjacent fixed beams respectively, and the bottom surface of the fixed beam is connected with supporting feet which extend along a third direction; the bearing plate is laid on the top surface of the fixed beam, and the surface of the bearing plate away from the fixed beam is provided with rolling shafts which are used for assisting the air preheater tube box in being transferred onto the bearing plate. The frame body is formed by connecting the plurality of fixed beams and the plurality of connecting beams, and the bearing plate is laid on the frame body, so that the contact area can be increased, the weight of the air preheater tube box can be evenly distributed, the air preheater tube box can be transferred into a narrow space, and the stability, safety and flexibility of the transfer process are improved.

Description

Technical Field

[0001] This application relates to the field of air preheater tube box technology, and in particular to a transfer device for an air preheater tube box. Background Technology

[0002] An air preheater is a heat exchange surface in the boiler's tail flue where the flue gas is preheated to a certain temperature by internal heat exchange fins before entering the boiler. This improves the boiler's heat exchange performance and reduces energy consumption. Currently, air preheater tube boxes need to be transported to the area behind the boiler during installation. However, due to the limited space behind the boiler and the large size of the air preheater tube boxes, traditional lifting equipment cannot be used to directly hoist them, leading to significant difficulties in the installation operation. Utility Model Content

[0003] In order to solve the above-mentioned technical problems, or at least partially solve the above-mentioned technical problems, this application provides a transfer device for an air preheater tube box.

[0004] This application provides a transfer device for an air preheater tube box, comprising:

[0005] The frame includes multiple fixed beams spaced apart along a first direction, the fixed beams extending along a second direction, and multiple connecting beams spaced apart between adjacent fixed beams along the second direction. The two ends of the connecting beams are respectively connected to the inner surfaces of the two adjacent fixed beams, and the bottom surfaces of the fixed beams are connected to support legs extending along a third direction; wherein the first direction, the second direction, and the third direction are perpendicular to each other.

[0006] A support plate is laid on the top surface of the fixed beam. The surface of the support plate opposite to the fixed beam is provided with a rolling shaft to assist the transfer of the air preheater tube box to the support plate.

[0007] In one possible implementation, a reinforcing beam is also included, which is disposed at both ends of the fixed beam, and the ends of all the fixed beams located on the same side are fixed to the reinforcing beam.

[0008] In one possible implementation, the reinforcing beam is arranged at an inclination relative to the plane containing the first direction, and a first included angle α is formed between the fixed beam connected to one end of the reinforcing beam and the reinforcing beam, and a second included angle β is formed between the fixed beam connected to the other end of the reinforcing beam and the reinforcing beam, wherein the first included angle α and the second included angle β satisfy the following relationship: α + β = 180°.

[0009] In one possible implementation, the range of the first included angle α is: 60°≤α≤80°; and the range of the second included angle β is 100°≤β≤120°.

[0010] In one possible implementation, the fixed beam includes two symmetrically arranged top plates and a vertical plate located between the two top plates. The two ends of the vertical plate are respectively fixedly connected to the middle of the facing surfaces of the two top plates to divide the area between the two top plates into two slots. The end of the connecting beam extends into the slot and is fixedly connected to the surface of the vertical plate.

[0011] In one possible implementation, after the connecting beam extends into the slot and is fixedly connected to the vertical plate, the top surface of the connecting beam is flush with the surface of the top plate.

[0012] In one possible implementation, the support foot includes a support strip and a support plate, the support plate being fixedly connected to one end of the support strip, and the other end of the support strip being connected to the bottom surface of the fixed beam; wherein, the height L of the support strip and the thickness D of the support plate satisfy the following relationship: 150mm≤L+D≤170mm.

[0013] In one possible implementation, the thickness of the support plate is 6mm-8mm.

[0014] In one possible implementation, the distance between two adjacent support legs is 1m-1.5m.

[0015] The technical solutions provided in this application have the following advantages compared with the prior art:

[0016] By cleverly utilizing multiple fixed beams and connecting beams to form a frame, and laying load-bearing plates on the frame, the contact area is increased, evenly distributing the weight of the air preheater tube box. This enables the air preheater tube box to be transferred into confined spaces, improving the stability, safety, and flexibility of the transfer process, and reducing reliance on workspace and large equipment. Furthermore, rolling shafts are installed on the surface of the load-bearing plates facing away from the fixed beams, creating rolling friction with the air preheater tube box. This allows operators to easily push or guide the tube box onto the load-bearing plates in confined spaces, reducing reliance on lifting equipment, lowering transfer resistance caused by space constraints, and significantly improving the convenience and efficiency of tube box transfer. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a transfer device for an air preheater tube box according to an embodiment of this application;

[0018] Figure 2 This is a schematic diagram of the frame structure in a transfer device for an air preheater tube box according to an embodiment of this application;

[0019] Figure 3This is a schematic diagram of the structure of the fixed beam in the transfer device of an air preheater tube box according to an embodiment of this application.

[0020] Icon labels:

[0021] 10. Frame; 11. Fixed beam; 111. Top plate; 112. Vertical plate; 12. Connecting beam; 13. Reinforcing beam; 20. Bearing plate; 30. Rolling shaft; 40. Support foot; 41. Support bar; 42. Support plate; X, First direction; Y, Second direction; Z, Third direction. Detailed Implementation

[0022] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "front," "rear," "upper," "lower," "left," "right," "longitudinal," "horizontal," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," and "tail" are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or component referred to must have a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0023] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," "third," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0024] In the following description, specific details such as particular system structures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the present invention. However, those skilled in the art will understand that the present invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0025] The first direction X, the second direction Y, and the third direction Z in this embodiment are defined for ease of describing the positional relationship between components. Specifically, the fixed beam 11 can be used as a reference, where the first direction X refers to the width direction of the fixed beam 11 (refer to...). Figure 2 The X direction in the diagram refers to the direction of the fixed beam 11, and the second direction Y refers to the length direction of the fixed beam 11 (see reference). Figure 1 The Y direction in the figure), and the third direction Z refers to the height direction of the fixed beam 11 (refer to the Y direction). Figure 1 (in the Z direction).

[0026] like Figure 1 and Figure 2 As shown in the figure, an air preheater tube box transfer device according to an embodiment of the present invention includes a frame 10 and a support plate 20. The frame 10 includes a plurality of fixed beams 11 spaced apart along a first direction X. The fixed beams 11 extend along a second direction Y, and a plurality of connecting beams 12 spaced apart along the second direction Y between adjacent fixed beams 11. The two ends of the connecting beams 12 are respectively connected to the inner sides of the two adjacent fixed beams 11. The bottom surface of the fixed beams 11 is connected to a support foot 40 extending along a third direction Z. The support plate 20 is laid on the top surface of the fixed beams 11. A rolling shaft 30 is provided on the surface of the support plate 20 opposite to the fixed beams 11 to assist in transferring the air preheater tube box onto the support plate 20.

[0027] Multiple fixed beams 11 are spaced apart in the first direction X, and multiple connecting beams 12 are arranged spaced apart in the second direction Y between adjacent fixed beams 11. A bearing plate 20 is then laid on the top surface of the fixed beams 11 to form a frame-type load-bearing structure composed of the fixed beams 11, connecting beams 12, and bearing plate 20. If the air preheater tube box needs to be transferred, it is simply placed onto the bearing plate 20 from one end of the frame 10. Then, under the action of the rolling shaft 30 located on the surface of the bearing plate 20, the air preheater tube box is completely transferred onto the bearing plate 20, and finally transferred as a whole to the boiler. In other words, this air preheater tube box transfer device cleverly utilizes multiple fixed beams 11 and multiple connecting beams 12 to form a frame 10, and lays a bearing plate 20 on the frame 10 to increase the contact area and evenly distribute the weight of the air preheater tube box. This allows the air preheater tube box to be transferred into confined spaces, improving the stability, safety, and flexibility of the transfer process, and reducing reliance on working space and large equipment. In addition, a rolling shaft 30 is provided on the surface of the bearing plate 20 away from the fixed beam 11 to form rolling friction with the air preheater tube box. This allows the operator to easily push or guide the tube box onto the bearing plate 20 in a confined space by means of the rolling action of the rolling shaft 30, reducing the reliance on lifting equipment, reducing the transfer resistance caused by space constraints, and significantly improving the convenience and efficiency of tube box transfer.

[0028] For example, by connecting a support foot 40 extending along the third direction Z to the bottom surface of the fixed beam 11, the support foot 40 is used to support the frame 10, thereby enhancing the contact stability between the frame 10 and the ground, preventing tilting or falling when carrying large-sized and heavy air preheater tube boxes, and ensuring safety during transportation.

[0029] It should be noted that the number of fixed beams 11 and connecting beams 12 and the area of ​​the bearing plate 20 can be flexibly adjusted according to the size of the air preheater tube box to ensure that the bearing plate 20 can be fully adapted to the size of the air preheater tube box, avoiding displacement or suspension during transportation, thereby solving the problem of transportation difficulties caused by size mismatch.

[0030] In practical applications, when the air preheater tube box is transferred onto the support plate 20, a lateral thrust or side force is generated on the frame 10, causing the fixed beams 11 to shift relative to each other due to the force, which in turn leads to the frame 10 becoming loose. Therefore, in one possible embodiment, a reinforcing beam 13 is also included. The reinforcing beam 13 is located at both ends of the fixed beams 11, and the ends of all the fixed beams 11 located on the same side are fixed to the reinforcing beam 13. Thus, by fixing the reinforcing beam 13 to the ends of all the fixed beams 11 located on the same side, the relative displacement between the fixed beams 11 can be strictly constrained, ensuring that the fixed beams 11 always remain parallel and the spacing is stable, preventing the frame 10 from affecting its overall stability due to local loosening or deformation.

[0031] Furthermore, the reinforcing beam 13 is arranged at an angle relative to the plane containing the first direction X, which reduces space occupation compared to a horizontal or vertical arrangement. A first included angle α is formed between the fixed beam 11 connected to one end of the reinforcing beam 13 and the reinforcing beam 13, and a second included angle β is formed between the fixed beam 11 connected to the other end of the reinforcing beam 13 and the reinforcing beam 13. The first included angle α and the second included angle β satisfy the following relationship: α + β = 180°. In other words, all reinforcing beams 13 can be connected to form a whole using the reinforcing beam 13, resulting in better structural strength. Furthermore, limiting the angles of the first included angle α and the second included angle β to 180° is to allow for adjustment of the distribution of tension or support force on different fixed beams 11 through their tilt angles. For example, when the fixed beam 11 closer to the center of gravity of the pipe box bears a larger load, the reinforcing beam 13 can transfer part of the load to the other fixed beam 11 through the force direction corresponding to the α angle (forming a force balance through the complementary relationship of the β angle), making the force on each fixed beam 11 more balanced, avoiding bending or breaking of a single fixed beam 11 due to overload, and further ensuring the structural safety of the frame 10 under heavy load.

[0032] The range of the first included angle α is: 60°≤α≤80°; the range of the second included angle β is: 100°≤β≤120°.

[0033] like Figure 3As shown, in one possible embodiment, the fixed beam 11 includes two symmetrically arranged top plates 111 and a vertical plate 112 located between the two top plates 111. The two ends of the vertical plate 112 are fixedly connected to the middle of the facing surfaces of the two top plates 111, respectively, to divide the area between the two top plates 111 into two slots. The end of the connecting beam 12 extends into the slot and is fixedly connected to the surface of the vertical plate 112. In other words, the fixed beam 11 is constructed using two top plates 111 and a vertical plate 112. The two symmetrically arranged top plates 111 can increase the load-bearing area of ​​the fixed beam 11 in the first direction X and the second direction Y. The middle vertical plate 112 is vertically connected to the middle of the two top plates 111, effectively forming a longitudinal reinforcing rib at the center of its cross-section. This significantly improves the moment of inertia of the fixed beam 11, thereby enabling the fixed beam 11 to effectively resist bending deformation when subjected to the third-direction Z-load of the air preheater tube box. Meanwhile, the symmetrical double top plate 111 design balances the forces on both sides of the fixed beam 11. Combined with the lateral constraint of the vertical plate 112, it can reduce the torsional deformation of the fixed beam 11 caused by the offset of the air preheater tube box or lateral force, ensuring that it maintains structural stability under heavy load and providing a high-strength foundation bearing unit for the frame 10.

[0034] After the connecting beam 12 extends into the slot and is fixedly connected to the vertical plate 112, the top surface of the connecting beam 12 is flush with the surface of the top plate 111. This creates a flat, unified support plane between the top surfaces of the fixed beam 11 and the connecting beam 12. Consequently, the force on the bearing plate 20 is evenly distributed to the top plate 111 of the fixed beam 11 and the connecting beam 12 through this flat support surface. Both bear the load together, avoiding localized stress concentration. This protects the air preheater tube box from deformation due to excessive localized stress and extends the service life of the frame structure 10.

[0035] In one possible implementation, the support foot 40 includes a support bar 41 and a support plate 42. The support plate 42 is fixedly connected to one end of the support bar 41, and the other end of the support bar 41 is connected to the bottom surface of the fixed beam 11. The height L of the support bar 41 and the thickness D of the support plate 42 satisfy the following relationship: 150mm ≤ L + D ≤ 170mm. That is, limiting the height L of the support bar 41 and the thickness D of the support plate 42 to the above range ensures sufficient rigidity for the frame 10 while keeping the overall height of the frame 10 within a reasonable range, suitable for use in the confined space behind the boiler. For example, if the total height is too high (exceeding 170mm), it will cause interference between the top of the frame 10 and equipment such as the flue and crossbeams above the boiler; if the total height is too low (below 150mm), the gap between the bottom of the frame 10 and the ground will be too small, allowing debris on the ground to obstruct the stable placement of the support foot 40.

[0036] In one possible implementation, the thickness of the support plate 20 is 6mm-8mm. Thus, when bearing the load of the tube box, the plate within this thickness range can distribute the pressure through its own material rigidity, ensuring that the surface of the support plate 20 remains flat and does not deform due to excessive localized stress. If the thickness of the support plate 20 is too small, it will collapse due to insufficient rigidity, causing the air preheater tube box to tilt and sway due to deformation of the support plate 20; if the thickness of the support plate 20 is too large, it will increase costs and weight, making transportation inconvenient.

[0037] In one possible implementation, the distance between two adjacent support legs 40 is 1m-1.5m. That is, if the distance between adjacent support legs 40 is too large (e.g., >1.5m), a single support leg 40 will have to bear a larger load, which will lead to a significant increase in pressure at the ground contact point, making it easy for the support leg 40 to sink or tilt, threatening the overall stability of the frame 10; if the distance is too small (e.g., <1m), too many support legs 40 will result in a dense concentration of ground stress points, but will increase the structural complexity of the frame 10.

[0038] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A transfer device for an air preheater duct box, characterized in that, include: The frame includes multiple fixed beams spaced apart along a first direction, the fixed beams extending along a second direction, and multiple connecting beams spaced apart between adjacent fixed beams along the second direction. The two ends of the connecting beams are respectively connected to the inner surfaces of the two adjacent fixed beams, and the bottom surfaces of the fixed beams are connected to support legs extending along a third direction; wherein the first direction, the second direction, and the third direction are perpendicular to each other. A support plate is laid on the top surface of the fixed beam. The surface of the support plate opposite to the fixed beam is provided with a rolling shaft to assist the transfer of the air preheater tube box to the support plate.

2. The air preheater duct transfer apparatus of claim 1, wherein, It also includes reinforcing beams, which are located at both ends of the fixed beams, and the ends of all the fixed beams located on the same side are fixed to the reinforcing beams.

3. The air preheater can transfer device of claim 2, wherein, The reinforcing beam is arranged at an inclination relative to the plane containing the first direction, and a first included angle α is formed between the fixed beam connected to one end of the reinforcing beam and the reinforcing beam, and a second included angle β is formed between the fixed beam connected to the other end of the reinforcing beam and the reinforcing beam. The first included angle α and the second included angle β satisfy the following relationship: α + β = 180°.

4. The transfer device for the air preheater tube box according to claim 3, characterized in that, The range of the first included angle α is: 60°≤α≤80°; the range of the second included angle β is 100°≤β≤120°.

5. The air preheater duct transfer apparatus of claim 1, wherein, The fixed beam includes two symmetrically arranged top plates and a vertical plate located between the two top plates. The two ends of the vertical plate are fixedly connected to the middle of the facing surfaces of the two top plates, so as to divide the area between the two top plates into two slots. The end of the connecting beam extends into the slot and is fixedly connected to the surface of the vertical plate.

6. The air preheater duct transfer apparatus of claim 5, wherein, After the connecting beam extends into the slot and is fixedly connected to the vertical plate, the top surface of the connecting beam is flush with the surface of the top plate.

7. The air preheater can transfer device of claim 1, wherein, The fixed beams are provided in three parts, which are distributed at intervals along the first direction, and the distance between two adjacent fixed beams is 0.8m-1m.

8. The air preheater duct transfer apparatus of claim 1, wherein, The support foot includes a support bar and a support plate. The support plate is fixedly connected to one end of the support bar, and the other end of the support bar is connected to the bottom surface of the fixed beam. The height L of the support bar and the thickness D of the support plate satisfy the following relationship: 150mm≤L+D≤170mm.

9. The air preheater can transfer device of claim 1, wherein, The thickness of the bearing plate is 6mm-8mm.

10. The air preheater duct transfer apparatus of claim 1, wherein, The distance between two adjacent support legs is 1m-1.5m.

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