Lower cross beam supporting tool for movable steel structure factory building and lower cross beam structure

Abstract

The utility model discloses a lower cross beam supporting tool for a movable steel structure plant and a lower cross beam structure, and relates to the technical field of movable plant installation. The lower cross beam supporting tool comprises a supporting frame body, wherein the supporting frame body is of a door-shaped structure; the limiting connecting piece is located in the middle of the upper end of the supporting frame body, and the limiting connecting piece can be inserted into a cavity in the middle of the lower cross beam assembly; the fixed clamping hook is connected to the upper end of one side of the limiting connecting piece in a screwed mode, and the fixed clamping hook is used for being connected with the short edge of the upper side of a lower cross beam body in a clamped mode; in the installation state, the fixing clamping hook is clamped on the short edge of the upper side of the lower cross beam body so that the side wall of the cavity of the lower cross beam body can abut against the side wall of the limiting connecting piece, the freedom degrees of the lower cross beam assembly in the three directions can be locked so that the stability of follow-up installation can be ensured, meanwhile, the whole structure is convenient to manufacture, disassemble, assemble and adjust, and the installation efficiency is improved. And the labor cost and the material cost can be saved. The lower cross beam structure comprises the lower cross beam supporting tool.

Description

Technical Field

[0001] The utility model relates to the technical field of mobile factory building installation, in particular to a lower beam support tooling and a lower beam structure for a mobile steel structure factory building. Background Technique

[0002] A mobile steel structure factory building generally consists of components such as a trolley, a lower beam, columns, a roof truss, and diagonal braces. As the main components for its movement, the stability of the trolley and the lower beam during installation is directly related to the installation, adjustment of the steel columns, and the assembly of the roof truss. How to ensure that the trolley and the lower beam do not tilt, twist, or warp after installation is the main problem faced during the installation of a mobile steel structure factory building. The existing installation method for a mobile steel structure factory building is to directly support the trolley and the lower beam with diagonal braces and then adjust them one by one, or use guy ropes for anti-traction fixation. Since the number of trolleys is generally large (up to more than 10 groups), a large amount of engineering materials are required, and it is difficult to ensure the firmness of the lower beam fixation while saving materials. Summary of the Invention

[0003] Aiming at the technical problem that the existing installation method for a mobile steel structure factory building is difficult to ensure the firmness of the lower beam fixation while saving materials, the utility model provides a lower beam support tooling and a lower beam structure for a mobile steel structure factory building, which can lock the degrees of freedom in three directions of the lower beam assembly to ensure the stability of subsequent installation. At the same time, the whole structure is convenient for manufacturing, disassembly, and adjustment, which is conducive to saving labor costs and material costs.

[0004] The utility model is realized through the following technical solutions:

[0005] In a first aspect, the utility model provides a lower beam support tooling for a mobile steel structure factory building, including: a support frame body, the support frame body is of a portal structure; a limit connecting member, the limit connecting member is located in the middle of the upper end of the support frame body, and the limit connecting member can be inserted into a cavity in the middle of the lower beam assembly; a fixed hook, the fixed hook is screwed to the upper end of one side of the limit connecting member, and the fixed hook is used for clamping the short side on the upper side of the lower beam body; in the installation state, the fixed hook is clamped on the short side on the upper side of the lower beam body to abut the side wall of the cavity of the lower beam body against the side wall of the limit connecting member.

[0006] It should be noted that the existing installation method for a mobile steel structure factory building is to directly support the trolley and the lower beam with diagonal braces and then adjust them one by one, or use guy ropes for anti-traction fixation. Since the number of trolleys is generally large (up to more than 10 groups), a large amount of engineering materials are required, and it is difficult to ensure the firmness of the lower beam fixation while saving materials.

[0007] In view of this, the lower beam support tooling for a mobile steel structure workshop provided by the present utility model includes a support frame body, a limit connecting piece, and a fixing hook. The support frame body is in a portal structure. The limit connecting piece is located in the middle of the upper end of the support frame body, and the limit connecting piece can be inserted into the cavity in the middle of the lower beam assembly. The fixing hook is screwed to the upper end of one side of the limit connecting piece, and the fixing hook is used to clamp the short side on the upper side of the lower beam body. It has the characteristics of simple structure and convenient manufacturing, and can save engineering materials and facilitate material costs.

[0008] Therefore, during use, the support frame body is supported below the lower beam assembly, and the limit connecting piece is inserted into the cavity in the middle of the channel steel assembly. Then, the fixing hook is installed to clamp the short side on the upper side of the lower beam body through the fixing hook, and the side wall of the cavity of the lower beam body is abutted against the side wall of the limit connecting piece, so as to limit the degrees of freedom of the lower beam assembly in three directions through the support frame body, the limit connecting piece, and the fixing hook. The support frame body is a portal mechanism, which increases the support force arm of the lower beam support mechanism, thereby improving the anti-overturning ability of the lower beam assembly and increasing the stability of the subsequent installation of the factory building columns, and then ensuring the stability of the subsequent installation.

[0009] Among them, the limit connecting piece is inserted into the cavity in the middle of the lower beam assembly, which can better support the lower beam body, limit the sliding of the lower beam body, and prevent phenomena such as the torsion of the lower beam body that are not conducive to structural stability, so as to ensure the stability of the installation of the lower beam body. At the same time, the lower beam assembly is fixed by the fixing hook pulling and clamping the short side on the upper side of the lower beam body obliquely, so that the overturning moment transmitted by the lower beam body is transmitted to the support frame body through the limit connecting piece, and the fixing hook is screwed to the limit connecting piece, so as to be convenient for disassembly and assembly while ensuring the installation stability of the lower beam body, and facilitate saving labor costs.

[0010] Therefore, the lower beam support tooling for a mobile steel structure workshop provided by the present utility model can lock the degrees of freedom of the lower beam assembly in three directions to ensure the stability of subsequent installation. At the same time, the whole structure is convenient for manufacturing, disassembly and assembly, and adjustment, which is convenient for saving labor costs and material costs.

[0011] In an optional embodiment of the present application, the support frame body includes: a support cross beam, and the limit connecting piece is installed in the middle of the support cross beam; support columns, there are two support columns, and the two support columns are respectively fixed at the corresponding ends of the support cross beam, which can ensure that the support frame body has a sufficiently large support force arm and also meets the installation requirements of the trolley assembly.

[0012] In an optional embodiment of the present application, a support bottom plate is adapted to the lower end of the support column to ensure that the lower end of the support column has a sufficient contact area with the installation surface to ensure that the support column can obtain sufficient support force.

[0013] In an alternative embodiment of the present application, the support base plate is provided with mounting through holes to facilitate the fixed connection of the support frame body and the mounting structure (usually ground concrete) using expansion screws or chemical bolts, which is conducive to the rooting of the support structure and then ensures the stability of the overall structure.

[0014] In an alternative embodiment of the present application, the support cross beam is an H-shaped steel to ensure that the support cross beam has sufficient strength and stiffness.

[0015] In an alternative embodiment of the present application, there are two limiting connectors, and the two limiting connectors are arranged at intervals along the length direction of the support frame body to facilitate the fixed connection of both lower cross beam bodies of the lower cross beam assembly to the support frame body.

[0016] In an alternative embodiment of the present application, the limiting connector is a channel steel, and the openings of the two limiting connectors are arranged opposite to each other to ensure that the limiting connector has sufficient stiffness and also facilitate the fixing and disassembly of the fixing hook.

[0017] In an alternative embodiment of the present application, the fixing hook includes: a connecting screw rod, which is inserted into the limiting connector; a hook body, which is fixedly connected to the connecting screw rod, and the hook body can be clamped outside the short side on the upper side of the lower cross beam body; wherein, the fixing hook can be fixed on the limiting connector through a nut adapted to the connecting screw rod to ensure that the fixing hook can be quickly installed and disassembled.

[0018] In an alternative embodiment of the present application, the hook body is welded to the connecting screw rod to ensure that the fixing hook has sufficient structural strength and also facilitate the manufacture of the fixing hook.

[0019] In a second aspect, the present utility model provides a lower cross beam structure of a mobile steel structure workshop, including: lower cross beam bodies, two of which are arranged in parallel at intervals, and both lower cross beam bodies are installed on the lower cross beam support tooling of the above-mentioned mobile steel structure workshop; a trolley assembly, which is fixedly connected to the two lower cross beam bodies, and the trolley assembly is located at the lower end of the lower cross beam bodies.

[0020] For the lower cross beam structure of the mobile steel structure workshop provided by the present utility model, two lower cross beam bodies are arranged in parallel at intervals, and both lower cross beam bodies are installed on the lower cross beam support tooling of the above-mentioned mobile steel structure workshop. The trolley assembly is fixedly connected to the two lower cross beam bodies, which can lock the degrees of freedom in three directions of the lower cross beam assembly to ensure the stability of subsequent installation. At the same time, the whole structure is convenient for manufacturing, disassembly, and adjustment, which is conducive to saving labor costs and material costs.

[0021] Compared with the prior art, the present utility model has the following advantages and beneficial effects:

[0022] 1. The lower beam support tooling for a mobile steel structure workshop provided by the present utility model includes a support frame body, a limit connecting piece, and a fixing hook. The support frame body is in a portal structure. The limit connecting piece is located in the middle of the upper end of the support frame body, and the limit connecting piece can be inserted into the cavity in the middle of the lower beam assembly. The fixing hook is screwed to the upper end on one side of the limit connecting piece, and the fixing hook is used to clamp the short side on the upper side of the lower beam body. It has the characteristics of simple structure and convenient manufacturing, can save engineering materials and facilitate material costs. And by clamping the short side on the upper side of the lower beam body with the fixing hook and abutting the side wall of the cavity of the lower beam body against the side wall of the limit connecting piece, the degrees of freedom of the lower beam assembly in three directions are restricted by the support frame body, the limit connecting piece, and the fixing hook. The support frame body is a portal mechanism, which increases the support force arm of the lower beam support mechanism, thereby improving the anti-overturning ability of the lower beam assembly, increasing the stability of the subsequent installation of the factory building columns, and then ensuring the stability of the subsequent installation.

[0023] 2. For the lower beam support tooling for a mobile steel structure workshop provided by the present utility model, the limit connecting piece is inserted into the cavity in the middle of the lower beam assembly, which can better support the lower beam body, limit the sliding of the lower beam body, and prevent phenomena such as the torsion of the lower beam body that are not conducive to structural stability, thereby ensuring the stability of the installation of the lower beam body.

[0024] 3. For the lower beam support tooling for a mobile steel structure workshop provided by the present utility model, the lower beam assembly is fixed by obliquely pulling and clamping the short side on the upper side of the lower beam body with the fixing hook, so that the overturning moment transmitted by the lower beam body is transmitted to the support frame body through the limit connecting piece, and the fixing hook is screwed to the limit connecting piece, thereby ensuring the stability of the installation of the lower beam body while being convenient for disassembly and assembly and saving labor costs.

[0025] 4. For the lower beam structure of a mobile steel structure workshop provided by the present utility model, two lower beam bodies are arranged in parallel at intervals. Both of the two lower beam bodies are installed on the above-mentioned lower beam support tooling for a mobile steel structure workshop. The trolley assembly is fixedly connected to the two lower beam bodies and can lock the degrees of freedom of the lower beam assembly in three directions to ensure the stability of the subsequent installation. At the same time, the whole structure is convenient for manufacturing, disassembly and assembly, and adjustment, which is convenient for saving labor costs and material costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present application, so they should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0027] In the drawings:

[0028] Figure 1 This is a three-dimensional structural schematic diagram of the lower crossbeam support tooling of the mobile steel structure workshop in the embodiment of the present utility model;

[0029] Figure 2 This is a three-dimensional structural schematic diagram of the fixed hook in the embodiment of the present utility model;

[0030] Figure 3 This is a structural schematic diagram of the lower crossbeam structure of the mobile steel structure workshop in the embodiment of the present utility model.

[0031] Marks in the attached drawings and corresponding component names:

[0032] 10 - Support frame body, 11 - Support crossbeam, 12 - Support column, 13 - Support bottom plate, 13a - Installation through hole;

[0033] 20 - Limit connecting piece;

[0034] 30 - Fixed hook, 31 - Connecting screw, 32 - Hook body;

[0035] 40 - Lower crossbeam body;

[0036] 50 - Trolley assembly. Detailed implementation manners

[0037] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and shown in the accompanying drawings here can be arranged and designed in various different configurations.

[0038] Therefore, the detailed description of the embodiments of the present application provided in the accompanying drawings below is not intended to limit the scope of the present application claimed, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0039] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0040] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the products of this application are customarily placed during use. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. At the same time, in the description of the present application, unless otherwise clearly specified and defined, the terms should be understood in a broad sense. For those of ordinary skill in the art, the specific meanings of the corresponding terms in the present application can be understood according to specific circumstances.

[0041] It should be noted that, without conflict, different features in the embodiments of the present application can be combined with each other.

[0042] It is known that how to ensure that the trolley and the lower crossbeam do not tilt, twist, or warp after installation is the main problem faced during the installation of mobile steel structure workshops. The existing installation method for mobile steel structure workshops is to directly support the trolley and the lower crossbeam with diagonal braces and then adjust them one by one, or use guy ropes to prevent traction and fixation. Since the number of trolleys is generally large (up to more than 10 groups in some cases), a large amount of engineering materials are required, and it is difficult to ensure the firmness of the fixation of the lower crossbeam while saving materials.

[0043] To solve the above-mentioned problems, the inventor has innovatively designed the following technical solutions, and the specific implementation solutions of the present application will be described in detail below with reference to the drawings.

[0044] Embodiment 1

[0045] Combined with Figure 1 and Figure 3 , this embodiment provides a support tooling for the lower crossbeam of a mobile steel structure workshop, including: a support frame body 10, the support frame body 10 is of a portal structure; a limit connecting piece 20, the limit connecting piece 20 is located in the middle of the upper end of the support frame body 10, and the limit connecting piece 20 can be inserted into the cavity in the middle of the lower crossbeam assembly; a fixed hook 30, the fixed hook 30 is screwed to the upper end of one side of the limit connecting piece 20, and the fixed hook 30 is used for clamping the short side on the upper side of the lower crossbeam body 40; in the installation state, the fixed hook 30 is clamped on the short side on the upper side of the lower crossbeam body 40 to abut the side wall of the cavity of the lower crossbeam body 40 against the side wall of the limit connecting piece 20.

[0046] Specifically, the support frame body 10 includes: a support cross beam 11, and the limit connecting member 20 is installed in the middle of the support cross beam 11; support columns 12, there are two support columns 12, and the two support columns 12 are respectively fixed at the corresponding ends of the support cross beam 11, which can ensure that the support frame body 10 has a sufficiently large support force arm and also meets the installation requirements of the trolley assembly 50.

[0047] Generally speaking, a support bottom plate 13 is adapted to the lower end of the support column 12 to ensure that the lower end of the support column 12 has a sufficient contact area with the installation surface, so as to ensure that the support column 12 can obtain sufficient support force.

[0048] On this basis, the support bottom plate 13 is provided with installation through holes 13a to facilitate the fixed connection of the support frame body 10 and the installation structure (usually the ground concrete) by installing expansion bolts or chemical bolts, which is beneficial to the rooting of the support structure and then ensures the stability of the overall structure.

[0049] That is to say, the support bottom plate 13 is located below the support column 12 and is fixedly welded to the support column 12. A plurality of bolt holes are provided on the support bottom plate 13 for fixing expansion bolts, so as to fix it in the ground concrete, which is convenient for the rooting of the support structure and maintains the overall stability.

[0050] In this embodiment, the support cross beam 11 is an H-shaped steel to ensure that the support cross beam 11 has sufficient strength and stiffness.

[0051] Combined again with Figure 1 , two limit connecting members 20 are provided, and the two limit connecting members 20 are arranged at intervals along the length direction of the support frame body 10 to facilitate the fixed connection of the two lower cross beam bodies 40 of the lower cross beam assembly to the support frame body 10.

[0052] It can be understood that the limit connecting member 20 is a channel steel, and the grooves of the two limit connecting members 20 are arranged opposite to each other to ensure that the limit connecting member 20 has sufficient stiffness and is also convenient for the fixing and disassembly of the fixed hook 30.

[0053] Combined with Figure 2 , the fixed hook 30 includes: a connecting screw 31, the connecting screw 31 is inserted into the limit connecting member 20; a hook body 32, the hook body 32 is fixedly connected to the connecting screw 31, and the hook body 32 can be clamped outside the short side on the upper side of the lower cross beam body 40; wherein, the fixed hook 30 can be fixed on the limit connecting member 20 by a nut adapted to the connecting screw 31 to ensure that the fixed hook 30 can be quickly installed and disassembled.

[0054] Similarly, the hook body 32 is welded to the connecting screw 31 to ensure that the fixing hook 30 has sufficient structural strength and is also convenient for the manufacture of the fixing hook 30.

[0055] In a specific engineering example, the support column 12 is an HEB200 H-shaped steel, located on both sides of the support cross beam 11, and is welded and fixed to the support bottom plate 13 and the support cross beam 11. At the same time, there are two support columns 12 in each group, with a height of 570 mm. The support cross beam 11 is horizontally arranged on the support column 12 and is an HEB200 H-shaped steel with a length of 3 m. Moreover, the top elevation of the support cross beam 11 matches the bottom surface elevation of the lower cross beam assembly.

[0056] For the limit connecting member 20, it is a 200-mm channel steel and is welded to the support cross beam 11, and the two limit connecting members 20 are horizontally symmetrically arranged. At the same time, the outer spacing between the two limit connecting members 20 is 400 mm, and the height is 480 mm. Each channel steel 4 has a round hole, which is convenient for installing the fixing hook 30.

[0057] For the fixing hook 30, it is formed by welding an M20 screw and a bending plate. During operation, the screw is inserted into the round hole in the upper part of the limit connecting member 20, the bending plate buckles the short side of the lower cross beam body 40, and the distance between the limit connecting member 20 and the lower cross beam body 40 is pulled in by tightening the nut. And each support frame body 10 is provided with two fixing hooks 30, which are tightened to both sides to maintain structural stability.

[0058] In summary, the lower cross beam support tooling of the mobile steel structure workshop provided by this embodiment includes a support frame body 10, a limit connecting member 20, and a fixing hook 30. The support frame body 10 is a portal structure, the limit connecting member 20 is located in the middle of the upper end of the support frame body 10, and the limit connecting member 20 can be inserted into the cavity in the middle of the lower cross beam assembly. The fixing hook 30 is screwed to the upper end on one side of the limit connecting member 20, and the fixing hook 30 is used to clamp the short side on the upper side of the lower cross beam body 40. It has the characteristics of simple structure and convenient manufacture, and can save engineering materials and facilitate material costs.

[0059] During use, the support frame body 10 is supported under the lower cross beam assembly, and the limit connecting member 20 is inserted into the cavity in the middle of the channel steel assembly. Then, the fixing hook 30 is installed to clamp the short side on the upper side of the lower cross beam body 40 through the fixing hook 30, and the side wall of the cavity of the lower cross beam body 40 is abutted against the side wall of the limit connecting member 20, so as to limit the degrees of freedom of the lower cross beam assembly in three directions through the support frame body 10, the limit connecting member 20, and the fixing hook 30. The support frame body 10 is a portal mechanism, which increases the support force arm of the lower cross beam support mechanism, thereby improving the anti-overturning ability of the lower cross beam assembly, increasing the stability of the subsequent installation of the factory building columns, and then ensuring the stability of the subsequent installation.

[0060] When the workshop needs to be moved, loosen the nuts on the connecting screw rods 31 to release the restriction of the fixed hook 30 on the lower beam body 40, so that the lower beam body 40 can move relative to the support frame body 10, ensuring that the workshop can be moved.

[0061] Among them, the limit connecting piece 20 is inserted into the cavity in the middle of the lower beam assembly, which can better support the lower beam body 40, limit the sliding of the lower beam body 40, and prevent phenomena that are not conducive to structural stability such as the torsion of the lower beam body 40, thereby ensuring the stability of the installation of the lower beam body 40. At the same time, the lower beam assembly is fixed by the fixed hook 30 pulling and clamping the short side on the upper side of the lower beam body 40 obliquely, so that the overturning moment transmitted by the lower beam body 40 is transmitted to the support frame body 10 through the limit connecting piece 20, and the fixed hook 30 is screwed with the limit connecting piece 20, so that while ensuring the installation stability of the lower beam body 40, the disassembly and assembly are convenient, which is convenient for saving labor costs.

[0062] Therefore, the lower beam support tooling of the mobile steel structure workshop provided by this embodiment can lock the degrees of freedom in three directions of the lower beam assembly to ensure the stability of subsequent installation. At the same time, the whole structure is convenient for manufacturing, disassembly, assembly and adjustment, which is convenient for saving labor costs and material costs.

[0063] Embodiment 2

[0064] Combined with Figure 3 , this embodiment provides a lower beam structure of a mobile steel structure workshop, including: a lower beam body 40, two of the lower beam bodies 40 are arranged in parallel at intervals, and both of the lower beam bodies 40 are installed on the lower beam support tooling of the mobile steel structure workshop described in Embodiment 1; a trolley assembly 50, the trolley assembly 50 is fixedly connected to the two lower beam bodies 40, and the trolley assembly 50 is located at the lower end of the lower beam body 40.

[0065] It can be understood that the lower beam assembly is arranged on the top of the trolley assembly 50, between the trolley and the steel column. Its main function is to connect and fix all the trolley assemblies 50 to make them a whole. All steel columns are fixed to the lower beam assembly by bolts. Each lower beam assembly has two high-web channel steels arranged back to back on both sides and is fixed and formed through structures such as connecting plates. In a specific engineering example, the internal opening dimension of the lower beam assembly is 12 mm larger than the outer spacing of the limit connecting piece 20.

[0066] For the trolley assembly 50, it is composed of parts such as wheels, motors, speed reducers, and frames, and is the main part to keep the mobile steel structure workshop moving. In a specific engineering example, each mobile steel structure workshop has 10 sets of trolley assemblies 50 on one side. Different-sized steel structure workshops can be adjusted according to the design situation.

[0067] The lower crossbeam structure of the mobile steel structure workshop provided in this embodiment has two lower crossbeam bodies 40 arranged in parallel at intervals. Both of the two lower crossbeam bodies 40 are installed on the lower crossbeam support tooling of the mobile steel structure workshop described in Embodiment 1. The trolley assembly 50 is fixedly connected to the two lower crossbeam bodies 40 and can lock the degrees of freedom in three directions of the lower crossbeam assembly to ensure the stability of subsequent installation. At the same time, the entire structure is convenient for manufacturing, disassembly, and adjustment, which is conducive to saving labor costs and material costs.

[0068] The specific embodiments described above further elaborate on the purpose, technical solutions, and beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A mobile steel structure workshop lower beam support tooling, characterized in that: include: A support frame (10), wherein the support frame (10) is a door-shaped structure; A position-limiting connecting piece (20), the position-limiting connecting piece (20) being located in the middle of the upper end of the support frame (10), and the position-limiting connecting piece (20) being capable of being inserted into a cavity in the middle of the lower cross beam assembly; A fixed hook (30), the fixed hook (30) being screwed to the upper end of one side of the position-limiting connector (20), and the fixed hook (30) being used to clamp the short side of the upper side of the lower crossbeam body (40); In the installed state, the fixing hook (30) is clamped on the short side of the upper side of the lower cross beam body (40) to make the side wall of the cavity of the lower cross beam body (40) contact the side wall of the limiting connection piece (20).

2. The lower crossbeam support tooling for a mobile steel structure workshop according to claim 1 is characterized in that: The support frame (10) comprises: A supporting crossbeam (11), wherein the limiting connecting member (20) is installed in the middle of the supporting crossbeam (11); Support columns (12), two of which are provided, and the two support columns (12) are respectively fixed to corresponding ends of the support crossbeam (11).

3. The lower crossbeam support tooling for a mobile steel structure workshop according to claim 2 is characterized in that: The lower end of the supporting column (12) is adapted to be equipped with a supporting bottom plate (13).

4. The lower crossbeam support tooling for a mobile steel structure workshop according to claim 3 is characterized in that: The supporting base plate (13) is provided with a mounting through hole (13a).

5. The lower crossbeam support tooling for a mobile steel structure workshop according to claim 2 is characterized in that: The supporting cross beam (11) is an H-shaped steel.

6. The lower crossbeam support tooling for a mobile steel structure workshop according to claim 1 is characterized in that: Two of the position-limiting connecting members (20) are provided, and the two position-limiting connecting members (20) are arranged at intervals along the length direction of the support frame (10).

7. The lower crossbeam support tooling for a mobile steel structure workshop according to claim 6 is characterized in that: The limiting connecting piece (20) is a channel steel, and the notches of the two limiting connecting pieces (20) are arranged opposite to each other.

8. The lower crossbeam supporting tooling for a mobile steel structure workshop according to any one of claims 1 to 7, characterized in that: The fixing hook (30) comprises: A connecting screw (31), wherein the connecting screw (31) is inserted into the position-limiting connecting member (20); A hook body (32), the hook body (32) being fixedly connected to the connecting screw (31), and the hook body (32) being capable of being clamped outside the short side of the upper side of the lower cross beam body (40); The fixing hook (30) can be fixed on the position-limiting connecting member (20) by means of a nut matched with the connecting screw (31).

9. The lower crossbeam support tooling for a mobile steel structure workshop according to claim 8 is characterized in that: The hook body (32) is welded to the connecting screw rod (31).

10. A lower crossbeam structure of a mobile steel structure factory building, characterized in that: include: A lower crossbeam body (40), wherein two lower crossbeam bodies (40) are arranged in parallel and spaced apart, and both lower crossbeam bodies (40) are installed on the lower crossbeam support tooling of the mobile steel structure factory building according to any one of claims 1 to 9; A trolley assembly (50), wherein the trolley assembly (50) is fixedly connected to the two lower cross beam bodies (40), and the trolley assembly (50) is located at the lower end of the lower cross beam body (40).

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