A pillow beam structure

Abstract

The application discloses a pillow beam structure, which comprises an upper cover plate, a lower cover plate, a first vertical plate, a second vertical plate, a third vertical plate and a fourth vertical plate, the pillow beam structure is in the shape of a Chinese character "Gong", a first recess is formed on a first side of the pillow beam structure, a second recess is formed on a second side of the pillow beam structure, the upper cover plate and the lower cover plate are arranged in parallel, the first vertical plate and the second vertical plate are perpendicular to the upper cover plate and arranged between the upper cover plate and the lower cover plate, the third vertical plate is used for connecting a first end of the upper cover plate and a first end of the lower cover plate, and the fourth vertical plate is used for connecting a second end of the upper cover plate and a second end of the lower cover plate. The first vertical plate, the second vertical plate, the third vertical plate and the fourth vertical plate are arranged, the load resistance of the pillow beam structure is met, and the pillow beam structure is assembled with less plate material, so that the welding amount is reduced, the space occupation is reduced through the arrangement of the first recess and the second recess, the lightweight of the pillow beam structure is realized, and therefore the pillow beam structure is simplified under the premise of guaranteeing the load resistance of the pillow beam.

Description

Technical Field

[0001] The present invention relates to the technical field of rail vehicles, and particularly to a bolster structure. Background Art

[0002] The underframe of a rail transit vehicle is an important component for the body load-bearing of the rail vehicle, and it bears the loads generated from vehicle operation and its own weight. Currently, most underframes are of a frame structure composed of side beams, bolsters, draw beams, longitudinal and transverse beams, etc., which have the characteristics of stable structure and strong load-bearing capacity.

[0003] The bolster is a component directly connected to the bogie. In addition to bearing the vertical load of the vehicle, it also bears the dynamic load transmitted during the operation of the bogie. It is the component of the underframe that bears the largest load. Application No. CN202221802272.X proposed an anti-high-load bolster, which has a relatively high anti-load capacity. However, there are too many internal plates in the box structure, the welding amount is large, and at the same time, the box structure occupies a large space and cannot provide a large installation space for other components below the vehicle body. Moreover, the internal weld observation space of the box structure is small, which is not convenient for later inspection and maintenance. Most of the internal welds of the box structure are single-sided welds, and the fatigue performance is poor. This bolster needs to be re-combined with other parts of the underframe into a frame structure in the later process, which not only improves the strength but also makes the underframe structure complex.

[0004] Therefore, how to simplify the bolster structure on the premise of ensuring the anti-load capacity of the bolster is a technical problem that needs to be solved by those skilled in the art at present. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a bolster structure to simplify the bolster structure on the premise of ensuring the anti-load capacity of the bolster.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A bolster structure includes an upper cover plate, a lower cover plate, a first vertical plate, a second vertical plate, a third vertical plate and a fourth vertical plate, wherein:

[0008] The bolster structure is in an "I" shape, and a first concave portion is formed on the first side of the bolster structure, and a second concave portion is formed on the second side of the bolster structure;

[0009] The upper cover plate and the lower cover plate are arranged in parallel;

[0010] The first vertical plate and the second vertical plate are perpendicular to the upper cover plate and are arranged between the upper cover plate and the lower cover plate, and the first vertical plate and the second vertical plate are relatively arranged in the middle of the upper cover plate and the lower cover plate;

[0011] The third vertical plate is used to connect the first end of the upper cover plate and the first end of the lower cover plate;

[0012] The fourth upright plate is used to connect the second end of the upper cover plate and the second end of the lower cover plate.

[0013] Optionally, in the above-mentioned pillow beam structure, a third recess is provided at the first end of the lower cover plate, and a fourth recess is provided at the second end of the lower cover plate, with the third and fourth recesses arranged symmetrically.

[0014] Optionally, in the above-mentioned bolster beam structure, a first through hole is provided in the middle of the lower cover plate;

[0015] And / or, the first upright plate has a second through hole;

[0016] And / or, the second vertical plate has a third through hole;

[0017] And / or, the third upright plate has a fourth through hole;

[0018] And / or, the fourth upright plate has a fifth through hole.

[0019] Optionally, in the above-mentioned bolster beam structure, the bolster beam structure further includes a lifting seat, a first enclosure plate and a second enclosure plate. The first enclosure plate and the second enclosure plate are arranged opposite to the third upright plate to assist the third upright plate in connecting the first end of the upper cover plate and the first end of the lower cover plate. The lifting seat is arranged between the first enclosure plate and the second enclosure plate and is welded to the upper cover plate.

[0020] Optionally, in the above-mentioned bolster beam structure, the bolster beam structure further includes a connecting plate, the connecting plate including a first side wall, a second side wall, a first support point and a second support point, the first side wall being connected to a third vertical plate, the second side wall being connected to an upper cover plate, the first support point being connected to a lower cover plate, and the second support point being connected to a lifting seat.

[0021] Optionally, in the above-mentioned bolster beam structure, the bolster beam structure further includes a reinforcing rib, the first side of which is connected to the upper cover plate, the second side of which is connected to the third vertical plate, and the third side of which is connected to the lower cover plate.

[0022] Optionally, in the above-mentioned pillow beam structure, the first and third sides of the reinforcing ribs are provided with bevels;

[0023] A chamfer is provided at the connection between the first side and the second side of the reinforcing rib, and / or at the connection between the second side and the third side of the reinforcing rib.

[0024] Optionally, in the above-mentioned pillow beam structure, a fifth recess is provided on the fourth side of the reinforcing rib.

[0025] Optionally, in the above-mentioned bolster beam structure, the bolster beam structure further includes a first cover plate and a second cover plate, the first cover plate and the second cover plate are symmetrically distributed on both sides of the lifting seat, and the first cover plate is connected to the lifting seat, the lower cover plate and the first enclosure plate, and the second cover plate is connected to the lifting seat, the lower cover plate and the second enclosure plate.

[0026] Optionally, in the above-mentioned bolster beam structure, the third side of the bolster beam structure is structurally symmetrical to the fourth side of the bolster beam structure.

[0027] The bolster beam structure provided by this invention satisfies the load-bearing capacity of the bolster beam structure by arranging a first upright plate, a second upright plate, a third upright plate, and a fourth upright plate. Moreover, it uses fewer plates, so it is easy to assemble and reduces the amount of welding. By arranging a first recess and a second recess, the space occupation is reduced, and the bolster beam structure is made lightweight. Therefore, it simplifies the bolster beam structure while ensuring the load-bearing capacity of the bolster beam. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a perspective view of the pillow beam structure disclosed in an embodiment of the present invention;

[0030] Figure 2 This is a top view of the pillow beam structure disclosed in an embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the structure of the lower cover plate disclosed in an embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of the structure of the upper cover plate disclosed in an embodiment of the present invention;

[0033] Figure 5 This is a schematic diagram of the reinforcing rib structure disclosed in an embodiment of the present invention;

[0034] Figure 6 This is a partial structural schematic diagram of the pillow beam structure disclosed in an embodiment of the present invention;

[0035] Figure 7 This is an enlarged view of part A disclosed in the embodiment of the present invention;

[0036] in:

[0037] Upper cover 100, lower cover 200;

[0038] First upright plate 300, second upright plate 301, third upright plate 302, notch 3021, fourth upright plate 303;

[0039] The first recessed portion 400, the second recessed portion 401, the third recessed portion 402, and the fourth recessed portion 403;

[0040] First through hole 500, second through hole 501, third through hole 502, fourth through hole 503, fifth through hole 504;

[0041] Lifting base 600, first enclosure 601, second enclosure 602;

[0042] Connecting plate 700, reinforcing plate 701, first support plate 702, second support plate 703, reinforcing plate 704;

[0043] Reinforcing rib 800, bevel 801, chamfer 802, sealing weld bevel 803, second bevel 804, fifth recess 805, first bevel 806;

[0044] First cover plate 900, second cover plate 901. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without novelty are within the scope of protection of the present invention.

[0046] In the description of this invention, it should be understood that the terms "upper," "lower," "top surface," "bottom surface," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the indicated position or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0047] The technical solution of patent application number CN201120379133.6 adopts a bolster beam consisting of upper and lower cover plates and a middle upright plate assembly. This bolster beam has advantages such as simple structure and lightweight. However, in the actual chassis assembly welding process, two bolster beams provided by this solution need to be welded at the traditional bolster beam positions, which significantly increases the number of bolster beams to be welded, increases the product assembly time of the chassis process, and extends the cycle time of production.

[0048] like Figures 1-7As shown, the bolster beam structure disclosed in this invention includes an upper cover plate 100, a lower cover plate 200, a first upright plate 300, a second upright plate 301, a third upright plate 302, and a fourth upright plate 303. The bolster beam structure is in the shape of an "I" and a first recess 400 is formed on the first side of the bolster beam structure, and a second recess 401 is formed on the second side of the bolster beam structure. The upper cover plate 100 and the lower cover plate 200 are arranged in parallel. The first upright plate 300 and the second upright plate 301 are perpendicular to the upper cover plate 100 and are arranged between the upper cover plate 100 and the lower cover plate 200. The first upright plate 300 and the second upright plate 301 are arranged opposite each other in the middle of the upper cover plate 100 and the lower cover plate 200. The third upright plate 302 is used to connect the first end of the upper cover plate 100 and the first end of the lower cover plate 200. The fourth upright plate 303 is used to connect the second end of the upper cover plate 100 and the second end of the lower cover plate 200. Specifically, the bolster beam structure is an open structure, with the upper cover plate 100, lower cover plate 200, first upright plate 300, second upright plate 301, third upright plate 302, and fourth upright plate 303 forming a closed frame structure, which is structurally stable. Specifically, the connections between the upper cover plate 100, lower cover plate 200, first upright plate 300, second upright plate 301, third upright plate 302, and fourth upright plate 303 are all welded connections, and the welds between the upper cover plate 100, lower cover plate 200, first upright plate 300, second upright plate 301, third upright plate 302, and fourth upright plate 303 use double-sided T-joints, which facilitates control of welding deformation and better controls the flatness of the bolster beam structure after welding. Specifically, the lower cover plate 200 connects to the bogie under the vehicle and bears a large dynamic load during vehicle operation. Therefore, a higher plate thickness is selected to ensure the structural safety of the vehicle. The upper cover plate 100, while meeting the load requirements of the vehicle, can use a thinner material to fully distribute the material and improve material utilization. Preferably, the thickness of the lower cover plate 200 is greater than that of the upper cover plate 100. Specifically, the first recess 400 and the second recess 401 create a through-hole structure in the Z-direction of the bolster beam structure, facilitating installation and weld observation. The bolster beam structure provided by this invention, through the arrangement of the first upright plate 300, the second upright plate 301, the third upright plate 302, and the fourth upright plate 303, satisfies the load-bearing capacity of the bolster beam structure. Furthermore, it uses fewer plates, thus facilitating assembly and reducing welding. The arrangement of the first recess 400 and the second recess 401 reduces space occupation, achieving lightweighting of the bolster beam structure. Therefore, it simplifies the bolster beam structure while ensuring its load-bearing capacity.

[0049] To optimize the above technical solution, a third recess 402 is provided at the first end of the lower cover plate 200, and a fourth recess 403 is provided at the second end of the lower cover plate 200. The third recess 402 and the fourth recess 403 are arranged symmetrically. It should be noted that the existing bolster beam is a closed frame structure. After welding, the internal welds are not visible and are inconvenient for later maintenance. Specifically, by providing the third recess 402 and the fourth recess 403, it is possible to visually inspect the internal welds of the bolster beam structure after subsequent assembly, thereby improving the maintainability of the bolster beam structure. At the same time, this arrangement can further reduce the space occupied by the bolster beam structure under the vehicle, thus reserving sufficient space for subsequent equipment installation and layout. Therefore, by arranging the third recess 402 and the fourth recess 403, it is possible to make some welds of the bolster beam structure visible, while reducing the weight of the bolster beam structure, thereby reducing the weight of the vehicle body and optimizing the equipment layout space.

[0050] To optimize the above technical solution, a first through hole 500 is provided in the middle of the lower cover plate 200, and / or a second through hole 501 is provided in the first upright plate 300, and / or a third through hole 502 is provided in the second upright plate 301, and / or a fourth through hole 503 is provided in the third upright plate 302, and / or a fifth through hole 504 is provided in the fourth upright plate 303. Specifically, the provision of the above-mentioned through holes has at least three advantages: firstly, it facilitates the observation of the internal weld condition of the bolster beam structure, thereby improving the maintainability of the bolster beam structure; secondly, it reduces the self-weight of the bolster beam structure while ensuring its load-bearing capacity, thereby achieving the purpose of reducing the weight of the vehicle body; and thirdly, it facilitates wiring, as the wiring harnesses that need to be connected can be passed through the above-mentioned through holes, which facilitates the clarification of the wiring and improves the neatness of the undercarriage structure. It should be noted that the above-mentioned through hole setting only indicates its arrangement position and does not impose any restrictions on its number or shape. For example, the first upright plate 300 can have two second through holes 501, and the shapes of the two second through holes 501 are rectangular and square, respectively. The third upright plate 302 can have only one elliptical fourth through hole 503. This arrangement allows the operator to change the shape, size and position of the first through hole 500, the second through hole 501, the third through hole 502, the fourth through hole 503 and the fifth through hole 504 according to the needs of use. Under the premise of meeting the load-bearing capacity of the bolster beam, the bolster beam structure is simplified and its practicality and flexibility of use are improved.

[0051] To optimize the above technical solution, the bolster beam structure also includes a lifting seat 600, a first surrounding plate 601, and a second surrounding plate 602. The first surrounding plate 601 and the second surrounding plate 602 are arranged opposite to the third upright plate 302 to assist the third upright plate 302 in connecting the first end of the upper cover plate 100 to the first end of the lower cover plate 200. The lifting seat 600 is arranged between the first surrounding plate 601 and the second surrounding plate 602 and is welded to the upper cover plate 100. Specifically, the lifting seat 600 is used for lifting and installing the bolster beam structure. There are two of them, arranged opposite to each other, one at the first end of the lower cover plate 200 and the other at the second end of the lower cover plate 200. Specifically, the opening of the third recess 402 and the fourth recess 403 causes the lower cover plate 200 to form a C-shaped structure at its opening. The first surrounding plate 601 and the second surrounding plate 602 can be used to connect the two ends of the C-shaped structure to the upper cover plate 100, thereby further improving the stability of the bolster beam structure. Furthermore, the bolster beam structure also includes a first support plate 702 and a second support plate 703. The first support plate 702 and the second support plate 703 are respectively used to connect the two ends of the aforementioned C-shaped structure to the upper cover plate 100, thereby further improving the structural strength of the bolster beam structure and ensuring its load-bearing capacity. By arranging the first enclosure plate 601 and the second enclosure plate 602, the ends of the bolster beam structure form a parallel frame structure, ensuring the stability of the bolster beam structure.

[0052] To optimize the above technical solution, the bolster beam structure also includes a connecting plate 700. The connecting plate 700 includes a first side wall, a second side wall, a first support point, and a second support point. The first side wall is connected to the third vertical plate 302, the second side wall is connected to the upper cover plate 100, the first support point is connected to the lower cover plate 200, and the second support point is connected to the lifting seat 600. Specifically, the shape of the connecting plate 700 includes, but is not limited to, triangular, L-shaped, etc., as long as it can achieve structural reinforcement and stable support. Other shapes are also within the protection scope of this invention and will not be elaborated here. Specifically, there are two connecting plates 700, which are arranged in parallel. The second support points of the two connecting plates 700 are respectively connected to both ends of the lifting seat 600 to improve the installation stability of the lifting seat 600. Specifically, the first vertical plate 300, the second vertical plate 301, the third vertical plate 302, the connecting plate 700, and the lifting seat 600 are connected, forming a stable force transmission path in the Y direction, ensuring the stability of the bolster beam structure. Furthermore, one or more reinforcing plates 701 can be arranged between the two connecting plates 700, with both ends of the reinforcing plate 701 connected to the two connecting plates 700 respectively, to improve the vehicle body's ability to resist loads in the X direction and ensure the stability of the bolster beam structure.

[0053] Furthermore, one or more reinforcing plates 704 may be arranged between the first upright plate 300 and the second upright plate 301. The two ends of the reinforcing plate 704 are respectively connected to the first upright plate 300 and the second upright plate 301 to further enhance the vehicle body's ability to resist loads in the X direction and ensure the stability of the bolster beam structure.

[0054] To optimize the above technical solution, the bolster beam structure also includes reinforcing ribs 800. The first side of the reinforcing rib 800 is connected to the upper cover plate 100, the second side is connected to the third vertical plate 302, and the third side is connected to the lower cover plate 200. Specifically, the connection point between the third vertical plate 302 and the upper cover plate 100 and the lower cover plate 200 is not at the edges of the upper cover plate 100 and the lower cover plate 200. By arranging the reinforcing ribs 800, the load-bearing capacity of the bolster beam structure can be further improved. Specifically, in the actual production of the bolster beam structure, if greater emphasis is placed on the self-weight of the bolster beam structure, it is preferable that the reinforcing rib 800 be plate-shaped to reduce the self-weight of the bolster beam structure; if it is necessary to enhance the stability of the bolster beam structure, it is preferable that the reinforcing rib 800 be column-shaped to achieve a better supporting effect.

[0055] To optimize the above technical solution, the first and third sides of the reinforcing rib 800 are provided with bevels 801, and the connection between the first side and the second side of the reinforcing rib 800, and / or the connection between the second side and the third side of the reinforcing rib 800, are provided with chamfers 802. Specifically, the aforementioned bevel is a double-sided bevel structure. Simultaneously, a sealing weld bevel 803 is provided at the ends of the first and third sides of the reinforcing rib 800. This is used for sealing the starting position of subsequent welds. After the aforementioned bevel 801 is welded, a sealing weld is performed at the sealing weld bevel 803, thereby avoiding leaving original defects at the starting position of the weld of the reinforcing rib 800. This also closes the weld of the reinforcing rib 800, preventing open areas and improving the fatigue strength of the bolster beam. By creating a chamfer 802, welds in other positions can be avoided, preventing interference. The bevel 801 and sealing weld bevel 803 are also applicable to the first enclosure 601 and the second enclosure 602 between the upper cover plate 100 and the lower cover plate 200. This treatment effectively reduces the probability of crack defects appearing in the welds on the bolster beam structure under fatigue loads, thereby ensuring the safety and stability of the bolster beam structure. Furthermore, a first bevel 806 can be provided on the lower cover plate 200, and a second bevel 804 can be provided on the upper cover plate 100. A notch 3021 is provided on the third upright plate 302 near the first bevel 806 and the second bevel 804. Both the first bevel 806 and the second bevel 804 are double-sided bevels, and they are connected to other components via butt welds during the base frame process. The butt welds facilitate adjustment of the welding process gap and improve the fatigue performance of the sleeper beam structure. The notch 3021 ensures the continuity of the welds between the first bevel 806 and the second bevel 804 after welding.

[0056] To optimize the above technical solution, a fifth recess 805 is provided on the fourth side of the reinforcing rib 800. Specifically, the fifth recess 805 is the weakest area of ​​the entire reinforcing rib 800. After welding, since the area of ​​the fifth recess 805 is relatively weaker than the weld area of ​​the bevel 801, the stress will be transferred from the weld area of ​​the bevel 801 to the fifth recess 805, thereby relieving the stress in the weld area of ​​the bevel 801 and improving the strength of the sleeper beam structure.

[0057] To optimize the above technical solution, the bolster beam structure also includes a first cover plate 900 and a second cover plate 901. The first cover plate 900 and the second cover plate 901 are symmetrically distributed on both sides of the lifting base 600. The first cover plate 900 is connected to the lifting base 600, the lower cover plate 200, and the first enclosure plate 601, and the second cover plate 901 is connected to the lifting base 600, the lower cover plate 200, and the second enclosure plate 602. Specifically, the first cover plate 900 and the second cover plate 901 connect the lifting base 600, the lower cover plate 200, the first enclosure plate 601, and the second cover plate 901, thereby further strengthening the strength of the bolster beam structure and improving the load-bearing capacity of the bolster beam.

[0058] To optimize the above technical solution, the third side and the fourth side of the bolster beam structure are symmetrical. Specifically, the above description refers to the third side of the bolster beam structure (the structure near the first end of the upper cover plate 100 and the first end of the lower cover plate 200). The structure of the fourth side of the bolster beam structure is the same as that of the third side, and will not be repeated here.

[0059] The advantages of this invention are:

[0060] (1) The structure of the sleeper beam was simplified while ensuring its load-bearing capacity;

[0061] (2) It enables visualization of the internal welds of the sleeper beam structure, which facilitates weld maintenance;

[0062] (3) High stability, high security, and strong practicality;

[0063] (4) The use of double-sided T-joints provides good fatigue performance.

[0064] It should be noted that the sleeper-beam structure provided by this invention can be used in the field of rail vehicle technology or other fields. Other fields refer to any field other than the field of rail vehicle technology. The above is merely an example and does not limit the application areas of the sleeper-beam structure provided by this invention.

[0065] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0066] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0067] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0068] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A pillow beam structure, characterized in that, It includes an upper cover plate, a lower cover plate, a first upright plate, a second upright plate, a third upright plate, and a fourth upright plate, wherein: The bolster beam structure is in the shape of an "I", and a first concave portion is formed on the first side of the bolster beam structure, and a second concave portion is formed on the second side of the bolster beam structure; The upper cover plate and the lower cover plate are arranged in parallel; The first upright plate and the second upright plate are perpendicular to the upper cover plate and are arranged between the upper cover plate and the lower cover plate, and the first upright plate and the second upright plate are arranged opposite each other in the middle of the upper cover plate and the lower cover plate; The third vertical plate is used to connect the first end of the upper cover plate and the first end of the lower cover plate; The fourth upright plate is used to connect the second end of the upper cover plate and the second end of the lower cover plate; The lower cover plate has a third recess at its first end and a fourth recess at its second end, with the third and fourth recesses arranged symmetrically. The bolster beam structure also includes a lifting seat, a first enclosure plate, and a second enclosure plate. The first enclosure plate and the second enclosure plate are arranged opposite to the third upright plate to assist the third upright plate in connecting the first end of the upper cover plate to the first end of the lower cover plate. The lifting seat is arranged between the first enclosure plate and the second enclosure plate and is welded to the upper cover plate. The bolster beam structure also includes a connecting plate, which includes a first side wall, a second side wall, a first support point, and a second support point. The first side wall is connected to the third vertical plate, the second side wall is connected to the upper cover plate, the first support point is connected to the lower cover plate, and the second support point is connected to the hoisting seat. The bolster structure also includes a first cover plate and a second cover plate, which are symmetrically distributed on both sides of the hoisting seat. The first cover plate is connected to the hoisting seat, the lower cover plate and the first enclosure plate, and the second cover plate is connected to the hoisting seat, the lower cover plate and the second enclosure plate.

2. The pillow beam structure as described in claim 1, characterized in that, The lower cover plate has a first through hole in the middle; And / or, the first upright plate is provided with a second through hole; And / or, the second vertical plate is provided with a third through hole; And / or, the third upright plate is provided with a fourth through hole; And / or, the fourth upright plate is provided with a fifth through hole.

3. The pillow beam structure as described in claim 1, characterized in that, The pillow beam structure also includes reinforcing ribs, the first side of which is connected to the upper cover plate, the second side of which is connected to the third upright plate, and the third side of which is connected to the lower cover plate.

4. The pillow beam structure as described in claim 3, characterized in that, The reinforcing rib has bevels on its first and third sides; A chamfer is provided at the connection between the first side and the second side of the reinforcing rib, and / or at the connection between the second side and the third side of the reinforcing rib.

5. The pillow beam structure as described in claim 3, characterized in that, A fifth recess is provided on the fourth side of the reinforcing rib.

6. The pillow beam structure as described in any one of claims 1-5, characterized in that, The third side of the pillow beam structure is structurally symmetrical to the fourth side of the pillow beam structure.

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