Subway air shaft steel arched beam

Abstract

The utility model relates to the technical field of steel arched beams, in particular to a subway air shaft steel arched beam which comprises a bottom plate and an arched steel beam arranged at the top of the bottom plate, the arched steel beam is of an arched steel beam structure formed by splicing a plurality of arc-shaped steel sections, and the middle of the bottom plate is detachably connected with an adjustable supporting component. The adjustable supporting component is detachably connected with the connecting piece, the connecting piece is detachably connected with the middle of the arched steel beam, the steel arched beam structure is formed by splicing the multiple arc-shaped steel sections, the assembling difficulty of the steel arched beam structure is reduced, and the adjustable supporting component adapts to the height of the arched steel beam, so that the steel arched beam structure can meet the supporting work of the steel arched beam with any height; the application range is widened, and the problems that in the prior art, when a steel arched beam structure is applied to assembly construction of a subway air shaft, due to the fact that the size is not easy to change, self-adjustment cannot be conducted according to use places, the assembly difficulty is further increased, the application range is small, and the construction efficiency is prone to being affected are solved.

Description

Technical Field

[0001] This utility model relates to the field of steel arch beam technology, specifically to a steel arch beam for a subway ventilation shaft. Background Technology

[0002] Currently, with the continuous development of engineering structures in my country, new forms of steel structures are constantly emerging, and steel beams are being widely used. Traditional steel beams are mostly horizontal, which are convenient to manufacture and simple to operate. However, horizontal steel beams cannot meet the requirements of roofs, canopies, and other related structures, especially since building roofs involve numerous complex procedures.

[0003] Chinese patent CN217537560U discloses a steel structure roof truss arch beam, relating to the field of arch beam technology. It includes a base plate, with connectors on both the left and right sides of the base plate. A support member is positioned between two sets of connectors, and a support rod is fixedly connected to the bottom of the support member. Connecting blocks are fixedly connected to both the left and right sides of the support member, and slots matching the connecting blocks are provided inside each connector. Inserts are fixedly connected to the bottom of both the connector and the support rod, and three sets of limiting grooves matching the inserts are provided on the top of the base plate. This invention, by using two sets of connectors, support members, and support rods, allows the arch beam to be disassembled into multiple groups for assembly, reducing installation difficulty and improving installation convenience.

[0004] When steel arch beams of the aforementioned type are used in the assembly and construction of subway ventilation shafts, their dimensions are not easily changed and they cannot be adjusted according to the usage location, which further increases the difficulty of assembly. Also, because different sizes of subway ventilation shafts may result in the steel arch beams being unsuitable for the construction environment, their applicability is limited, and they may easily affect construction efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a steel arch beam for subway ventilation shafts, which overcomes the problems of existing assembled steel arch beam structures being difficult to change in size and unable to be self-adjusted according to the usage site during the assembly and construction process of subway ventilation shafts, thus further increasing the assembly difficulty, limiting the scope of application, and easily affecting construction efficiency.

[0006] To achieve the above objectives, the technical solution adopted by this utility model to solve its technical problem is as follows:

[0007] A steel arch beam for subway ventilation shafts was designed. The steel arch beam structure is constructed by splicing multiple arc-shaped steel segments, which can facilitate the assembly of steel arch beams in confined spaces such as subway ventilation shafts, reducing assembly difficulty. Adjustable support components adapt to the height of the arched steel beam, enabling it to support steel arch beams of any height, thus expanding its applicability and ensuring convenient construction of steel arch beams in subway ventilation shafts. The specific scheme is as follows:

[0008] A steel arch beam for a subway ventilation shaft includes a base plate and an arched steel beam set on top of the base plate. The arched steel beam is a structure formed by splicing multiple arc-shaped steel segments.

[0009] An adjustable support component is detachably connected to the middle of the base plate, and a connector is detachably connected to the adjustable support component. The connector is detachably connected to the middle of the arched steel beam.

[0010] Preferably, each end of the arc-shaped steel segment is provided with a butt plate, and the corresponding ends of two adjacent arc-shaped steel segments are connected by bolts passing through the butt plates.

[0011] Preferably, mounting grooves are provided on both sides of the top of the base plate, and the connecting plates at both ends of the arched steel beam are embedded in the mounting grooves.

[0012] Preferably, the adjustable support component includes a first support stud, a second support stud, and an adjusting sleeve, wherein one end of the first support stud and one end of the second support stud are respectively threaded to both ends of the adjusting sleeve;

[0013] The other end of the first support stud is connected to the connector, and the other end of the second support stud is connected to the base plate.

[0014] Preferably, a first square groove is provided at the center of the top of the base plate, and a second square insert is provided at the other end of the second support stud, the second square insert being inserted into the first square groove.

[0015] Preferably, the connector has a second square groove at the bottom center, and the other end of the first support stud has a first square insert, which is inserted into the second square groove.

[0016] Preferably, the connector has through holes at its four corners, and U-shaped fastening bolts are inserted into two of the through holes on the same side. The arched steel beam is pressed between the U-shaped fastening bolts and the connector.

[0017] The beneficial effects of this utility model are:

[0018] 1. The arched steel beam in this utility model is composed of multi-segment spliced ​​arc-shaped steel segments, which are fastened together by bolts using butt joint plates. This allows it to meet the assembly requirements in most confined construction environments, ensuring both construction safety and efficiency, and significantly reducing the assembly difficulty in confined spaces.

[0019] 2. This utility model provides an adjustable support component between the arched steel beam and the base plate. The adjustable support component can meet the support requirements of the arched steel beam at different heights, thereby improving the strength and stability of the arched steel beam during assembly and use, and thus extending its service life.

[0020] 3. In this utility model, two support studs are threadedly connected to both ends of the adjusting sleeve in the adjustable support component, and they adopt the form of opposite spirals. This can ensure that the two support studs can extend or shorten simultaneously when the adjusting sleeve is rotated, so as to improve the adjustment efficiency of the adjustment work. Attached Figure Description

[0021] Figure 1 This is a front view of the present invention;

[0022] Figure 2 This is a structural schematic diagram of the bottom plate and adjustable support component of this utility model;

[0023] Figure 3 This is a schematic diagram of the connecting component in this utility model;

[0024] Figure 4 This is a schematic diagram of the U-shaped fastening bolt in this utility model.

[0025] In the diagram: 1-Base plate; 11-First square groove; 12-Mounting groove; 2-Arch steel beam; 21-Arc steel segment; 22-Butt plate; 3-Adjustable support component; 31-First support stud; 311-First square insert; 32-Second support stud; 321-Second square insert; 33-Adjusting sleeve; 4-Connector; 41-Second square groove; 42-Through hole; 5-U-shaped fastening bolt; 51-Second nut; 6-Bolt; 61-Second nut. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0027] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to those skilled in the art that these specific details are not necessary to implement the present invention. In other embodiments, well-known structures, circuits, materials, or methods are not specifically described in order to avoid obscuring the present invention.

[0028] Throughout this specification, references to "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in connection with that embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "an embodiment," "an example," "an example," or "an example" appearing in various places throughout the specification do not necessarily refer to the same embodiment or example. Furthermore, specific features, structures, or characteristics can be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. Moreover, those skilled in the art will understand that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] In the description of this utility model, the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0030] like Figure 1-4 As shown, this utility model provides a steel arch beam for a subway ventilation shaft, including a base plate 1 and an arched steel beam 2 set on top of the base plate 1. The arched steel beam 2 spans across the top of the base plate 1 to complete its assembly. The arched steel beam 2 is composed of multiple arc-shaped steel segments 21 spliced ​​together to form an arched steel beam structure. The multiple arc-shaped steel segments 21 are beneficial for assembly in confined construction environments. An adjustable support member 3 is detachably connected to the middle of the base plate 1. The adjustable support member 3 can self-adjust to adapt to the height of the arched steel beam 2, achieving effective support and ensuring the strength and stability of the arched steel beam 2. A connector 4 is detachably connected to the adjustable support member 3. The connector 4 is detachably connected to the middle of the arched steel beam 2. The connector 4 facilitates the connection between the arched steel beam 2 and the adjustable support member 3, thereby improving the assembly efficiency of the steel arch beam.

[0031] In the above scheme, the two ends of the arc-shaped steel section 21 are respectively provided with a butt plate 22, and the corresponding ends of two adjacent arc-shaped steel sections 21 are connected by bolts 6 through the butt plate 22.

[0032] As an optimized technical solution of this utility model, the connecting plate 22 is set at both ends of the arc-shaped steel section 21, and the bolt 6 passes through the connecting plate 22 at the corresponding ends of the two adjacent arc-shaped steel sections 21 and is fastened by the first nut 61, so that the two adjacent arc-shaped steel sections 21 are effectively connected.

[0033] In the above scheme, mounting grooves 12 are respectively opened on both sides of the top of the base plate 1, and the connecting plates 22 at both ends of the arched steel beam 2 are embedded in the mounting grooves 12.

[0034] As an optimized technical solution of this utility model, the connecting plate 22 at the end of the arched steel beam 2 is embedded in the mounting groove 12 to achieve precise positioning of both ends of the arched steel beam 2 and prevent misalignment. The bolt 6 passes through the bottom plate 1 of the connecting plate 22 from top to bottom and is fastened by the first nut 61 to ensure the stable installation of the arched steel beam 2.

[0035] In the above scheme, the adjustable support component 3 includes a first support stud 31, a second support stud 32 and an adjusting sleeve 33. One end of the first support stud 31 and one end of the second support stud 32 are respectively threaded to the two ends of the adjusting sleeve 33. The other end of the first support stud 31 is connected to the connector 4, and the other end of the second support stud 32 is connected to the base plate 1.

[0036] As an optimized technical solution of this utility model, one end of the first support stud 31 and one end of the second support stud 32 are threadedly connected to both ends of the adjusting sleeve 33. The length of the adjusting sleeve 33 can be changed at will after rotating it, and it is connected between the arched steel beam 2 and the base plate 1 to provide effective support for the arched steel beam 2 and ensure the strength and stability of the arched steel beam 2.

[0037] In the above scheme, a first square groove 11 is provided at the center of the top of the base plate 1, and a second square insert 321 is provided at the other end of the second support stud 32. The second square insert 321 is inserted into the first square groove 11.

[0038] As an optimized technical solution of this utility model, the second square insert 321 at the free end of the second support stud 32 is inserted into the first square groove 11 at the top center of the base plate 1. This can prevent the second support stud 32 from rotating and facilitate the quick assembly of the second support stud 32 with the base plate 1, thereby improving its assembly efficiency.

[0039] In the above scheme, a second square groove 41 is provided at the bottom center of the connector 4, and a first square insert 311 is provided at the other end of the first support stud 31. The first square insert 311 is inserted into the second square groove 41.

[0040] As an optimized technical solution of this utility model, the first square insert 311 at the free end of the first support stud 31 is inserted into the second square groove 41 at the center of the bottom of the connector 4. This can prevent the first support stud 31 from rotating, facilitate the quick assembly of the first support stud 31 and the connector 4, improve its assembly efficiency, and facilitate the adjustment function by adjusting the rotation of the sleeve 33.

[0041] In the above scheme, the connector 4 has through holes 42 at the four corners, and U-shaped fastening bolts 5 are inserted into the two through holes 42 on the same side. The arched steel beam 2 is squeezed between the U-shaped fastening bolts 5 and the connector 4.

[0042] As an optimized technical solution of this utility model, there are two U-shaped fastening bolts 5. The width of the connector 4 is greater than the width of the arched steel beam 2. The through holes 42 are correspondingly set on both sides of the arched steel beam 2. The U-shaped fastening bolts 5 can be inserted into the through holes 42 from top to bottom, so that the U-shaped groove in the U-shaped fastening bolt 5 is stuck on the arched steel beam 2. Then, the second nut 51 is fastened to the bottom of the connector 4 at the lower end of the U-shaped fastening bolt 5. At the same time, the top of the connector 4 is provided with a certain arc so that it can fit against the inner side of the arched steel beam 2 to improve its support strength.

[0043] Specific implementation examples:

[0044] When steel arch beams need to be installed in the subway ventilation shaft, the base plate 1 can be installed on the upper end of the bottom support frame first, and then the butt plate 22 of one end of the arc-shaped steel section 21 at both ends can be installed in the mounting groove 12 at both ends of the base plate 1, and the bolts 6 can be used to pass through the mounting groove 12 and be fastened with the first nut 61.

[0045] Then, the connecting plates 22 at one end of the other curved steel segments 21 and the connecting plates 22 at the other ends of the curved steel segments 21 on both ends of the base plate 1 are connected and fastened with bolts 6 and first nuts 61 until the arched steel beam 2 is formed by splicing multiple curved steel segments 21.

[0046] Secondly, the adjustable support component 3 can be installed between the base plate 1 and the arched steel beam 2. During the installation of the adjustable support component 3, the second support stud 32 is inserted into the first square groove 11 through the second square insert 321 at its lower end, and the lower end of the adjusting sleeve 33 is threaded to the upper end of the second support stud 32. Then, the U-shaped fastening bolt 5 is inserted into the through hole 42 from top to bottom and tightened with the second nut 51, so that the connecting piece 4 is installed on the inner side of the middle of the arched steel beam 2. Then, the first support stud 31 is inserted into the second square groove 41 through the first square insert 311 at its upper end, and the lower end of the first support stud 31 is threaded to the upper end of the adjusting sleeve 33.

[0047] Finally, in order to ensure the strength and stability of the arched steel beam 2, the adjusting sleeve 33 can be rotated further. By changing the length of the first support stud 31 and the second support stud 32 extending out of the adjusting sleeve 33, the distance between the arched steel beam 2 and the base plate 1 can be adapted to ensure effective support for the arched steel beam 2. Alternatively, construction can be carried out directly after the steel arch beam is assembled.

[0048] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A steel arch beam for a subway ventilation shaft, comprising a base plate (1) and an arched steel beam (2) disposed on top of the base plate (1), characterized in that: The arched steel beam (2) is an arched steel beam structure formed by splicing together multiple arc-shaped steel segments (21); An adjustable support member (3) is detachably connected to the middle of the base plate (1), and a connector (4) is detachably connected to the adjustable support member (3). The connector (4) is detachably connected to the middle of the arched steel beam (2).

2. The steel arch beam for a subway ventilation shaft according to claim 1, characterized in that: The two ends of the arc-shaped steel segment (21) are respectively provided with a butt plate (22), and the corresponding ends of two adjacent arc-shaped steel segments (21) are connected by bolts (6) passing through the butt plate (22).

3. The steel arch beam for a subway ventilation shaft according to claim 1, characterized in that: The bottom plate (1) has mounting grooves (12) on both sides of the top, and the connecting plates (22) at both ends of the arched steel beam (2) are embedded in the mounting grooves (12).

4. A steel arch beam for a subway ventilation shaft according to claim 1, characterized in that: The adjustable support component (3) includes a first support stud (31), a second support stud (32) and an adjusting sleeve (33), with one end of the first support stud (31) and one end of the second support stud (32) respectively threaded to both ends of the adjusting sleeve (33); The other end of the first support stud (31) is connected to the connector (4), and the other end of the second support stud (32) is connected to the base plate (1).

5. A steel arch beam for a subway ventilation shaft according to claim 4, characterized in that: The bottom plate (1) has a first square groove (11) at the top center position, and the second support stud (32) has a second square insert (321) at the other end, which is inserted into the first square groove (11).

6. A steel arch beam for a subway ventilation shaft according to claim 4, characterized in that: The connector (4) has a second square groove (41) at the bottom center, and the other end of the first support stud (31) has a first square insert (311) inserted into the second square groove (41).

7. A steel arch beam for a subway ventilation shaft according to claim 1, characterized in that: The connector (4) has through holes (42) at its four corners. U-shaped fastening bolts (5) are inserted into the two through holes (42) on the same side. The arched steel beam (2) is squeezed between the U-shaped fastening bolts (5) and the connector (4).

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