Prefabricated cabin bottom base, prefabricated cabin body and prefabricated cabin

Abstract

The utility model provides a kind of prefabricated cabin base, prefabricated cabin cabin and prefabricated cabin belong to the device technical field for power supply or distribution.The prefabricated cabin base includes base body and nut block, and threaded hole is equipped on the nut block, and installation structure for installing nut block is equipped on the base body, and installation structure includes the activity space for the activity of nut block, the exposed hole that always exposes threaded hole in the activity of nut block, the supporting surface that nut block is supported when bolt is not installed or when bolt is loosened, the rotation-stopping surface that prevents nut block from rotating in the process of bolt installation and the stop surface that limits the limit of the upward movement of nut block.When the machining error exists in screen cabinet fixing hole, bolt can be connected with nut block by the movement of nut block, realize that screen cabinet is fixed on base bottom plate, and when screen cabinet is combined in situ, bolt can be loosened, bolt and nut block are moved together when screen cabinet moves, the position of screen cabinet is changed, temporary reaming or reaming is not needed, the installation of screen cabinet is facilitated.

Description

Technical Field

[0001] This utility model relates to a prefabricated cabin base, a prefabricated cabin body, and a prefabricated cabin, belonging to the technical field of devices for power supply or distribution. Background Technology

[0002] Prefabricated modules, also known as prefabricated substations, are integrated devices. They involve the production, assembly, wiring, and commissioning of primary and secondary electrical equipment in a factory, followed by transportation as a whole to the construction site for installation on prefabricated foundations. Because the primary and secondary equipment inside the prefabricated module is integrated by the manufacturer and manufactured in the factory, secondary wiring is completed on-site. This significantly reduces the workload of design, construction, installation, commissioning, and maintenance, simplifies inspection and maintenance, and effectively shortens the construction cycle. They are widely used in substation construction and are increasingly being applied to the construction of energy storage power stations and new energy substations.

[0003] like Figure 1 As shown, the prefabricated cabin includes a cabin body and a cabinet 3 fixed inside the cabin body. The cabin body includes a base 1 and a wall 2 fixed to the base 1. The cabinet base plate 31 is fixed to the base 1 by bolts 4 at four corners. Cabinet fixing holes 311 are provided at the four corners of the cabinet base plate 31 for the bolts 4 to pass through. Combined with... Figure 2 As shown, the base 1 includes a steel frame and a base plate 12 fixed to the top surface of the steel frame. The base plate 12 has mounting holes 121 for bolts 4 to pass through. The steel frame includes downward-facing channel steel 11. The top walls of the two channel steels 11 corresponding to the cabinet 3 have mounting holes 111 for bolts 4 to pass through. Nuts 13 are welded and fixed to the bottom surface of the top wall of the channel steel 11 at positions corresponding to the mounting holes 111. When installing the cabinet 3, the cabinet 3 is first placed in the compartment, and then bolts 4 are sequentially passed through the mounting holes 311, the base plate mounting holes 121, and the channel steel mounting holes 111, and connected to the nuts 13 to fix the cabinet 3 to the base 1.

[0004] In the specific processing and manufacturing process, the position of nut 13 is determined by the position of channel steel fixing hole 111, and the position of base plate fixing hole 121 is opened according to the position of channel steel fixing hole 111. Therefore, when manufacturing the base, the relative positions of channel steel fixing hole 111, nut 13, and base plate fixing hole 121 are easily guaranteed. However, cabinet 3 is manufactured separately. Due to the influence of processing precision, when fixing cabinet 3, misalignment often occurs between cabinet fixing hole 311 and channel steel fixing hole 111, affecting the smooth installation of bolt 4. In this case, only temporary hole enlargement (enlarging the hole diameter of cabinet fixing hole 311) can be used, which brings inconvenience to the assembly work in the factory. In addition, for prefabricated cabins formed by splicing multiple single compartments, each single compartment is fixed with a cabinet when leaving the factory. When assembling the compartments on site, in addition to connecting the compartments, it is also necessary to merge the cabinets. At this time, the position of the cabinets needs to be adjusted, but the existing fixing method of the cabinets cannot be adjusted. Only temporary hole enlargement or re-drilling can be used, which brings inconvenience to the on-site installation and affects the installation efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a prefabricated cabin base to solve the problem that when existing cabinets are installed in the factory, if the fixing holes of the cabinet and the fixing holes of the channel steel are misaligned, temporary hole enlargement is required, which causes inconvenience to the assembly work in the factory. In addition, for prefabricated cabins formed by splicing multiple single cabins, the position of the cabinet cannot be adjusted when merging cabinets on site, and only temporary hole enlargement or re-drilling is required, which causes inconvenience to the on-site installation.

[0006] The purpose of this utility model is also to provide a prefabricated cabin body and a prefabricated cabin to solve the above-mentioned problems.

[0007] To achieve the above objectives, the prefabricated cabin base of this utility model adopts the following technical solution: The prefabricated cabin base includes a base body and a nut block. The nut block has a threaded hole for engaging with bolts passing through the bottom plate of the cabinet. The base body has an installation structure for mounting the nut block without it protruding from the base body. The installation structure includes a movable space for the nut block to move in a direction perpendicular to the axis of the threaded hole, an exposed hole for the threaded hole to always be exposed during the movement of the nut block, a support surface for supporting the nut block when the bolt is not installed or when the bolt is loosened, an anti-rotation surface for preventing the nut block from rotating during bolt installation, and a stop surface for limiting the upward movement of the nut block to its limit position.

[0008] The beneficial effects of the above technical solution are as follows: This utility model is a pioneering invention, providing a brand-new prefabricated cabin base. The base includes a base body and a nut block. The nut block has a threaded hole for engaging with bolts passing through the bottom plate of the cabinet, facilitating the fixing of the cabinet to the base. Simultaneously, the base body has an installation structure for installing the nut block without it protruding from the base body. This satisfies the installation requirements of the nut block while preventing it from protruding and affecting the placement of the cabinet. Specifically, the installation structure includes a movable space for the nut block to move in a direction perpendicular to the axis of the threaded hole. This allows the position of the nut block to be changed, ensuring that the threaded hole on the nut block still corresponds to the cabinet fixing hole even if there are machining errors. Furthermore, the installation structure includes an exposed hole that always exposes the threaded hole during the movement of the nut block, ensuring that the threaded hole is not blocked during the movement of the nut block and facilitating the smooth installation of the bolts.

[0009] Meanwhile, the installation structure also includes a support surface to support the nut block when the bolts are not installed or when the bolts are loosened, which can prevent the nut block from being positioned too low, especially during the initial bolt installation, making it easier to connect the bolt and the nut block. The installation structure also includes an anti-rotation surface to prevent the nut block from rotating during bolt installation and a stop surface to limit the upward movement of the nut block to its extreme position. This ensures that the bolts can be tightened, and the nut block and bolts clamp and fix the bottom plate of the cabinet to the base body, thus securing the cabinet.

[0010] In summary, the prefabricated compartment base of this invention features an adjustable nut block position. Even with machining errors in the cabinet fixing holes, the connection between the bolts and the nut block can still be achieved without temporarily enlarging the diameter of the cabinet fixing holes, thus facilitating the assembly of the cabinet in the factory. Furthermore, for prefabricated compartments formed by splicing multiple single compartments, the position of the cabinet can be changed simply by loosening the bolts during on-site cabinet assembly. The cabinet moves along with the nut block via the bolts, and the bolts can be tightened again once the position is determined. This eliminates the need for temporary hole enlargement or re-drilling, simplifying on-site cabinet assembly and improving installation efficiency.

[0011] Furthermore, the base body includes a frame and a base plate fixed to the top surface of the frame. The frame includes structural steel. The exposed holes include structural steel exposed holes opened on the top wall of the structural steel and base plate exposed holes opened on the base plate. A limiting plate is fixed on the bottom surface of the top wall of the structural steel. The bottom surface of the top wall of the structural steel constitutes the stop surface. The limiting plate includes a bottom wall and a side wall. The upper surface of the bottom wall constitutes the support surface. The upper end of the side wall is fixed to the bottom surface of the top wall of the structural steel. There is a gap between the side wall and the nut block. This gap constitutes the movable space or is part of the movable space.

[0012] Furthermore, the nut block includes a base plate and a block located at the upper center of the base plate with a cross-sectional area smaller than that of the base plate. The opening of the threaded hole is located on the upper surface of the block. The block extends into the exposed hole of the steel profile. The gap between the block and the exposed hole of the steel profile is also part of the movable space. The base plate is located between the bottom surface of the top wall of the steel profile and the bottom wall of the limiting plate.

[0013] Furthermore, the sidewall has two parallel straight walls, and the exposed steel section hole has a continuous four-sided hole wall.

[0014] Furthermore, the substrate is square-shaped, and the inner surface of the sidewall forms the anti-rotation surface.

[0015] Furthermore, there are two limiting plates spaced apart, both of which are L-shaped and symmetrically arranged, and the two sidewalls are formed by the sidewalls of the two limiting plates.

[0016] Furthermore, the exposed holes in the steel profiles are round, and the blocks are cylindrical.

[0017] Furthermore, a flared enlargement hole is provided at the opening of the threaded hole, so that when the threaded hole and the cabinet fixing hole are misaligned, the bolt abuts against the wall of the enlargement hole to guide the nut block to be aligned.

[0018] To achieve the above objectives, the prefabricated cabin body in this utility model adopts the following technical solution: The prefabricated cabin body includes a base and walls fixed on the base. The base includes a base body and a nut block. The nut block has threaded holes for engaging with bolts passing through the bottom plate of the cabinet. The base body has an installation structure for installing the nut block and preventing the nut block from protruding from the base body. The installation structure includes a movable space for the nut block to move in a direction perpendicular to the axis of the threaded hole, an exposed hole for always exposing the threaded hole during the movement of the nut block, a support surface for supporting the nut block when the bolt is not installed or when the bolt is loosened, an anti-rotation surface for preventing the nut block from rotating during bolt installation, and a stop surface for limiting the upward movement of the nut block to its limit position.

[0019] The beneficial effects of the above technical solution are as follows: This utility model is an improved invention, further defining the base. The base includes a base body and a nut block. The nut block has a threaded hole for engaging with bolts passing through the bottom plate of the cabinet, facilitating the fixing of the cabinet to the base. Simultaneously, the base body has an installation structure for mounting the nut block without it protruding from the base body, satisfying the installation requirements while preventing the nut block from protruding and affecting the placement of the cabinet. Specifically, the installation structure includes a movable space for the nut block to move in a direction perpendicular to the axis of the threaded hole. This allows the position of the nut block to be changed, ensuring that the threaded hole on the nut block still corresponds to the cabinet fixing hole even with machining errors. Furthermore, the installation structure includes an exposed hole that always exposes the threaded hole during the movement of the nut block, ensuring that the threaded hole is not blocked during the nut block's movement and facilitating the smooth installation of the bolts.

[0020] Meanwhile, the installation structure also includes a support surface to support the nut block when the bolts are not installed or when the bolts are loosened, which can prevent the nut block from being positioned too low, especially during the initial bolt installation, making it easier to connect the bolt and the nut block. The installation structure also includes an anti-rotation surface to prevent the nut block from rotating during bolt installation and a stop surface to limit the upward movement of the nut block to its extreme position. This ensures that the bolts can be tightened, and the nut block and bolts clamp and fix the bottom plate of the cabinet to the base body, thus securing the cabinet.

[0021] In summary, the base of this utility model features an adjustable nut block position. Even with machining errors in the cabinet fixing holes, the connection between the bolts and the nut block can still be achieved without temporarily enlarging the diameter of the cabinet fixing holes, thus facilitating the assembly of the cabinet in the factory. Furthermore, for prefabricated cabinets formed by splicing multiple single compartments, the position of the cabinet can be changed simply by loosening the bolts during on-site cabinet assembly. The cabinet moves along with the nut block via the bolts, and the bolts can be tightened again once the position is determined. This eliminates the need for temporary hole enlargement or re-drilling, simplifying on-site cabinet assembly and improving installation efficiency.

[0022] Furthermore, the base body includes a frame and a base plate fixed to the top surface of the frame. The frame includes structural steel. The exposed holes include structural steel exposed holes opened on the top wall of the structural steel and base plate exposed holes opened on the base plate. A limiting plate is fixed on the bottom surface of the top wall of the structural steel. The bottom surface of the top wall of the structural steel constitutes the stop surface. The limiting plate includes a bottom wall and a side wall. The upper surface of the bottom wall constitutes the support surface. The upper end of the side wall is fixed to the bottom surface of the top wall of the structural steel. There is a gap between the side wall and the nut block. This gap constitutes the movable space or is part of the movable space.

[0023] Furthermore, the nut block includes a base plate and a block located at the upper center of the base plate with a cross-sectional area smaller than that of the base plate. The opening of the threaded hole is located on the upper surface of the block. The block extends into the exposed hole of the steel profile. The gap between the block and the exposed hole of the steel profile is also part of the movable space. The base plate is located between the bottom surface of the top wall of the steel profile and the bottom wall of the limiting plate.

[0024] Furthermore, the sidewall has two parallel straight walls, and the exposed steel section hole has a continuous four-sided hole wall.

[0025] Furthermore, the substrate is square-shaped, and the inner surface of the sidewall forms the anti-rotation surface.

[0026] Furthermore, there are two limiting plates spaced apart, both of which are L-shaped and symmetrically arranged, and the two sidewalls are formed by the sidewalls of the two limiting plates.

[0027] Furthermore, the exposed holes in the steel profiles are round, and the blocks are cylindrical.

[0028] Furthermore, a flared enlargement hole is provided at the opening of the threaded hole, so that when the threaded hole and the cabinet fixing hole are misaligned, the bolt abuts against the wall of the enlargement hole to guide the nut block to be aligned.

[0029] To achieve the above objectives, the prefabricated cabin in this utility model adopts the following technical solution: The prefabricated cabin includes a cabin body and a cabinet fixed within the cabin body. The cabin body includes a base and walls fixed to the base. The cabinet is fixed to the base by bolts passing through the cabinet's bottom plate. The base includes a base body and a nut block. The nut block has threaded holes for engaging with bolts passing through the cabinet's bottom plate. The base body has an installation structure for mounting the nut block without it protruding from the base body. The installation structure includes a space for the nut block to move in a direction perpendicular to the axis of the threaded hole, an exposed hole for always exposing the threaded hole during the movement of the nut block, a support surface for supporting the nut block when the bolts are not installed or when the bolts are loosened, an anti-rotation surface for preventing the nut block from rotating during bolt installation, and a stop surface for limiting the upward movement of the nut block to its limit position.

[0030] The beneficial effects of the above technical solution are as follows: This utility model is an improved invention, further defining the base. The base includes a base body and a nut block. The nut block has a threaded hole for engaging with bolts passing through the bottom plate of the cabinet, facilitating the fixing of the cabinet to the base. Simultaneously, the base body has an installation structure for mounting the nut block without it protruding from the base body, satisfying the installation requirements while preventing the nut block from protruding and affecting the placement of the cabinet. Specifically, the installation structure includes a movable space for the nut block to move in a direction perpendicular to the axis of the threaded hole. This allows the position of the nut block to be changed, ensuring that the threaded hole on the nut block still corresponds to the cabinet fixing hole even with machining errors. Furthermore, the installation structure includes an exposed hole that always exposes the threaded hole during the movement of the nut block, ensuring that the threaded hole is not blocked during the nut block's movement and facilitating the smooth installation of the bolts.

[0031] Meanwhile, the installation structure also includes a support surface to support the nut block when the bolts are not installed or when the bolts are loosened, which can prevent the nut block from being positioned too low, especially during the initial bolt installation, making it easier to connect the bolt and the nut block. The installation structure also includes an anti-rotation surface to prevent the nut block from rotating during bolt installation and a stop surface to limit the upward movement of the nut block to its extreme position. This ensures that the bolts can be tightened, and the nut block and bolts clamp and fix the bottom plate of the cabinet to the base body, thus securing the cabinet.

[0032] In summary, the base of this utility model features an adjustable nut block position. Even with machining errors in the cabinet fixing holes, the connection between the bolts and the nut block can still be achieved without temporarily enlarging the diameter of the cabinet fixing holes, thus facilitating the assembly of the cabinet in the factory. Furthermore, for prefabricated cabinets formed by splicing multiple single compartments, the position of the cabinet can be changed simply by loosening the bolts during on-site cabinet assembly. The cabinet moves along with the nut block via the bolts, and the bolts can be tightened again once the position is determined. This eliminates the need for temporary hole enlargement or re-drilling, simplifying on-site cabinet assembly and improving installation efficiency.

[0033] Furthermore, the base body includes a frame and a base plate fixed to the top surface of the frame. The frame includes structural steel. The exposed holes include structural steel exposed holes opened on the top wall of the structural steel and base plate exposed holes opened on the base plate. A limiting plate is fixed on the bottom surface of the top wall of the structural steel. The bottom surface of the top wall of the structural steel constitutes the stop surface. The limiting plate includes a bottom wall and a side wall. The upper surface of the bottom wall constitutes the support surface. The upper end of the side wall is fixed to the bottom surface of the top wall of the structural steel. There is a gap between the side wall and the nut block. This gap constitutes the movable space or is part of the movable space.

[0034] Furthermore, the nut block includes a base plate and a block located at the upper center of the base plate with a cross-sectional area smaller than that of the base plate. The opening of the threaded hole is located on the upper surface of the block. The block extends into the exposed hole of the steel profile. The gap between the block and the exposed hole of the steel profile is also part of the movable space. The base plate is located between the bottom surface of the top wall of the steel profile and the bottom wall of the limiting plate.

[0035] Furthermore, the sidewall has two parallel straight walls, and the exposed steel section hole has a continuous four-sided hole wall.

[0036] Furthermore, the substrate is square-shaped, and the inner surface of the sidewall forms the anti-rotation surface.

[0037] Furthermore, there are two limiting plates spaced apart, both of which are L-shaped and symmetrically arranged, and the two sidewalls are formed by the sidewalls of the two limiting plates.

[0038] Furthermore, the exposed holes in the steel profiles are round, and the blocks are cylindrical.

[0039] Furthermore, a flared enlargement hole is provided at the opening of the threaded hole, so that when the threaded hole and the cabinet fixing hole are misaligned, the bolt abuts against the wall of the enlargement hole to guide the nut block to be aligned. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the structure of a prefabricated cabin in the prior art; Figure 2 This is a schematic diagram showing the connection of the cabinet, bolts, and base of the prefabricated compartment in the prior art; Figure 3 This is a schematic diagram of the prefabricated cabin structure in this utility model; Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram showing the connection of the prefabricated compartment's cabinet, bolts, and base in this utility model; Figures 1-2 In the middle: 1. Base; 11. Channel steel; 111. Channel steel fixing hole; 12. Base plate; 121. Base plate fixing hole; 13. Nut; 2. Wall; 3. Screen cabinet; 31. Screen cabinet base plate; 311. Screen cabinet fixing hole; 4. Bolt; Figures 3-5 In the middle: 1. Base; 11. Channel steel; 111. Top wall of channel steel; 1111. Exposed hole of channel steel; 112. Side wall of channel steel; 12. Base plate; 121. Exposed hole of base plate; 13. Limiting plate; 131. Limiting bottom wall; 132. Limiting side wall; 14. Nut block; 141. Base plate; 142. Block; 143. Threaded hole; 1431. Enlarged hole; 2. Wall; 3. Screen cabinet; 31. Screen cabinet bottom plate; 311. Screen cabinet fixing hole; 4. Bolt. Detailed Implementation

[0041] To address the technical problems existing in the prior art, the basic concept of this utility model is to set up a movable nut block. When there is a machining error in the fixing hole of the cabinet, the bolt can still be connected to the nut block by moving the nut block, so that the cabinet can be fixed on the base plate. Moreover, when assembling the cabinet on site, the bolt can be loosened, and when the cabinet is moved, the bolt and nut block can be moved together to change the position of the cabinet. There is no need to temporarily enlarge the hole or re-drill the hole, which facilitates the installation of the cabinet.

[0042] The features and performance of this utility model will be further described in detail below with reference to the embodiments.

[0043] The implementation method of the prefabricated cabin in this utility model: like Figure 3 As shown, the prefabricated cabin includes a cabin body and a cabinet 3 fixed inside the cabin body. The cabin body includes a base 1 and a wall 2 fixed on the base 1. A top cover is fixed to the top of the wall 2.

[0044] Combination Figure 4 and Figure 5 As shown, the cabinet 3 includes a cabinet base plate 31, which is fixed to the base 1 by bolts 4 at four corners. The cabinet base plate 31 has cabinet fixing holes 311 at each of its four corners for the bolts 4 to pass through. The diameter of the fixing holes 311 is adapted to the diameter of the bolt 4's shank, that is, slightly larger than the bolt 4's shank diameter, to allow the bolt 4's shank to pass through smoothly, while also fully utilizing the bolt 4's head to press against the cabinet base plate 31, ensuring sufficient pressing area.

[0045] The base 1 includes a base body and a nut block 14. The nut block 14 has a threaded hole 143 for engaging with a bolt 4 passing through the base plate 31 of the cabinet, facilitating the fixing of the cabinet 3 to the base 1. The base body has an installation structure for installing the nut block 14 without the nut block 14 protruding from the base body, thus ensuring the installation of the nut block 14 while preventing it from protruding and affecting the placement of the cabinet 3.

[0046] The above-mentioned installation structure includes a movable space for the nut block 14 to move in a direction perpendicular to the axis of the threaded hole 143. This allows the position of the nut block 14 to be changed. Even if there is a machining error in the cabinet fixing hole 311, the threaded hole 143 on the nut block 14 can still correspond to the cabinet fixing hole 311. Furthermore, the installation structure also includes an exposed hole that keeps the threaded hole 143 exposed during the movement of the nut block 14, ensuring that the movement range of the nut block 14 does not block the threaded hole 143, thus enabling the smooth installation of the bolt 4.

[0047] Meanwhile, the aforementioned installation structure also includes a support surface that supports the nut block 14 when the bolt 4 is not installed or when the bolt 4 is loosened, which can prevent the nut block 14 from being positioned too low, especially during the first installation of the bolt 4, making it easier to connect the bolt 4 and the nut block 14. The aforementioned installation structure also includes an anti-rotation surface to prevent the nut block 14 from rotating during the installation of the bolt 4, and a stop surface to limit the upward movement of the nut block 14 to its extreme position. This allows the bolt 4 to be tightened, thereby enabling the cabinet base plate 31 to be clamped and fixed to the base body by the nut block 14 and the bolt 4, thus fixing the cabinet 3.

[0048] Therefore, by adopting the prefabricated cabin base of this utility model, the position of the nut block 14 is adjustable. Even with machining errors in the cabinet fixing hole 311, the connection between the bolt 4 and the nut block 14 can still be achieved without temporarily enlarging the diameter of the cabinet fixing hole 311, which facilitates the assembly of the cabinet 3 in the factory. At the same time, for prefabricated cabins formed by splicing multiple single cabins, when merging cabinets on site, simply loosening the bolt 4 can change the position of the cabinet 3. When the cabinet 3 moves, it will move along with the nut block 14 via the bolt 4. After the position is determined, the bolt 4 can be tightened again without temporarily enlarging or re-drilling holes, avoiding damage to the existing structure of the cabinet base plate 31 and the base 1, facilitating on-site cabinet assembly and installation, and improving installation efficiency.

[0049] Specifically, in this embodiment, the base body includes a frame and a base plate 12 fixed to the top surface of the frame. The base plate 12 provides a flat top surface for the base 1, facilitating the placement of the equipment. The frame of the base 1 is a steel structure frame, including a rectangular frame fixed by four perimeter beams and multiple longitudinal beams or vertically arranged longitudinal and transverse beams fixed within the rectangular frame. In this embodiment, the longitudinal beams, transverse beams, and edge beams are all made of shaped steel, specifically channel steel with the slots facing downwards. In other embodiments, C-shaped steel, I-beams, H-beams, or rectangular tubes can also be used, and solid bars can also be used.

[0050] To provide better support and fixation for the cabinet 3, the base 1 includes two steel sections arranged below the cabinet 3. In this embodiment, these are two channel steel sections 11, with the slots of the channel steel sections 11 facing downwards. Each channel steel section 11 includes a top wall 111 and side walls 112 extending downwards from both sides of the top wall 111. Since the remaining steel sections of the frame are also channel steel, and the slots of each channel steel face downwards, the base plate 12 is fixed to the top walls of each channel steel.

[0051] The aforementioned exposed holes include channel steel exposed holes 1111 (i.e., section steel exposed holes) opened on the top wall 111 of the channel steel and bottom plate exposed holes 121 opened on the base plate 12. In other embodiments, if other sections of steel are used to make the frame, for example, when C-shaped steel is used, the slot of the C-shaped steel is arranged downwards, and the section steel exposed holes are opened on the top wall of the C-shaped steel; when I-beams or H-beams are used, the two flanges of the I-beams or H-beams are arranged horizontally on top and bottom, and the middle web is arranged vertically, and the section steel exposed holes are opened on the upper flange; when rectangular tubes are used, the section steel exposed holes are opened on the top wall of the rectangular tubes.

[0052] Specifically, in this embodiment, both the exposed hole 1111 of the channel steel and the exposed hole 121 of the base plate are circular holes. Of course, if other types of steel are used, the exposed hole of the steel section will also be circular, meaning the exposed hole of the steel section has continuous walls around its perimeter. The diameter of the exposed hole 121 of the base plate is slightly smaller than the diameter of the exposed hole 1111 of the channel steel, but this does not affect the exposure of the threaded hole 143 within the range of motion of the nut block 14. In other embodiments, the diameter of the exposed hole 121 of the base plate can also be equal to the diameter of the exposed hole 1111 of the channel steel, and both the exposed hole 121 of the base plate and the exposed hole 1111 of the channel steel can also be square holes. It should be noted that... Figure 5 In order to more intuitively show the position and size of the cabinet fixing hole 311, the bottom plate exposed hole 121 and the channel steel exposed hole 1111, the outline of the holes is not fully drawn. For example, for the cabinet fixing hole 311, its position is missing two parallel lines that are flush with the upper and lower surfaces of the base plate 12.

[0053] In this embodiment, a limiting plate 13 is fixed on the bottom surface of the top wall 111 of the channel steel. The limiting plate 13 includes a limiting bottom wall 131 and a limiting side wall 132 that are vertically connected. The upper end of the limiting side wall 132 is fixed to the bottom surface of the top wall 111 of the channel steel. The specific fixing method can be welding or bonding. In this embodiment, the limiting side wall 132 is a straight wall that extends horizontally and is parallel to the channel steel side wall 112. Two limiting plates 13 are provided at intervals. Both limiting plates 13 are L-shaped and symmetrically arranged with the exposed hole 1111 of the channel steel as the center. That is, the two limiting side walls 132 are arranged in parallel, and the two limiting bottom walls 131 extend towards each other.

[0054] Furthermore, in this embodiment, the nut block 14 includes a base plate 141 and a block 142 located at the upper center of the base plate 141 with a cross-sectional area smaller than that of the base plate 141. The opening of the threaded hole 143 is located on the upper end surface of the block 142. The block 142 is cylindrical and extends into the channel steel protrusion hole 1111. The diameter of the block 142 is smaller than the inner diameter of the bottom plate protrusion hole 121 and the channel steel protrusion hole 1111. The base plate 141 is located between the bottom surface of the channel steel top wall 111 and the limiting bottom walls 131 of the two limiting plates 13. Therefore, the bottom surface of the channel steel top wall 111 constitutes the aforementioned stop surface, and the upper surfaces of the two limiting bottom walls 131 constitute the aforementioned support surface.

[0055] Because the vertical height of the limiting sidewall 132 is less than that of the channel steel sidewall 112, the limiting bottom wall 131 has a certain height, thus supporting the nut block 14 to a certain height. This facilitates the connection between the bolt 4 and the nut block 14 during the initial installation of the cabinet. Later, when adjusting the position of the cabinet, loosening or completely removing the bolt 4 prevents the nut block 14 from falling off, facilitating subsequent connections.

[0056] There is a gap between the two limiting sidewalls 132 and the nut block 14, which is part of the aforementioned active space. Simultaneously, there is a larger gap between the block body 142 of the nut block 14 and the exposed hole 1111 of the channel steel, which is also part of the aforementioned active space. Since the two limiting sidewalls 132 are parallel, straight walls, the arrangement direction of the two limiting sidewalls 132 ( Figure 5 In the left-right direction, the nut block 14 has a certain amount of movement; while in the extending direction of the limiting sidewall 132 ( Figure 5 In the direction perpendicular to the paper, the nut block 14 has a greater range of motion, but eventually the block 142 will come into contact with the wall of the exposed hole 1111 of the channel steel, thus limiting the movement limit of the nut block 14.

[0057] Of course, in addition to the two orthogonal directions mentioned above, the nut block 14 can also move in the inclined direction that forms an angle with these two orthogonal directions. However, it will eventually come into contact with the wall of the limiting sidewall 132 or the hole wall of the exposed hole 1111 of the channel steel, thereby limiting the nut block 14 within a certain range within the installation structure and preventing the nut block 14 from being misaligned too much, which would cause the bolt 4 to be unable to align with the threaded hole 143.

[0058] In fact, when installing bolt 4 inside the cabinet, since the cabinet fixing hole 311 is open, the nut block 14 below can be seen through the cabinet fixing hole 311, and it can be seen whether the threaded hole 143 is aligned with the cabinet fixing hole 311. If the misalignment is not significant, inserting bolt 4 can guide the nut block 14 to be aligned. Of course, other tools can also be used to pry the nut block 14 through the cabinet fixing hole 311 and into the threaded hole 143 to make the threaded hole 143 aligned with the cabinet fixing hole 311, and then install bolt 4.

[0059] In this embodiment, for ease of operation, a flared enlarged hole 1431 is provided at the opening of the threaded hole 143. When the threaded hole 143 and the cabinet fixing hole 311 are misaligned, the end of the bolt 4 will abut against the wall of the enlarged hole 1431. Since the enlarged hole 1431 is a tapered hole, the downward force of the bolt 4 can generate a radial component force, thereby guiding the nut block 14 to the correct position and facilitating the connection between the bolt 4 and the nut block 14.

[0060] In addition, in this embodiment, the base plate 141 of the nut block 14 is square. During the installation of the bolt 4, when the nut block 14 rotates with the bolt 4 under the action of the thread engagement force, the base plate 141 will abut against the limiting sidewalls 132 on both sides. The limiting sidewalls 132 will then prevent the nut block 14 from rotating, so that the nut block 14 can only move upward. Finally, the base plate 141 abuts against the bottom surface of the channel steel top wall 111, so that the bolt 4 can be tightened. Thus, the base plate 31 of the cabinet is clamped and fixed on the base body with the bolt 4, thereby fixing the cabinet 3. Therefore, the inner surface of the limiting sidewall 132 constitutes the aforementioned anti-rotation surface.

[0061] It should be noted that, in Figure 5 In the state shown, the nut block 14 is supported on the limiting bottom wall 131 of the limiting plate 13. There is a certain gap between the base plate 141 and the bottom surface of the channel steel top wall 111. At the same time, the top surface of the block 142 is lower than the base plate 12, and there is also a certain gap between the block 142 and the cabinet bottom plate 31. However, this gap is larger than the gap between the base plate 141 and the bottom surface of the channel steel top wall 111. Therefore, the base plate 141 will contact the bottom surface of the channel steel top wall 111 first. Even when the bolt 4 is tightened, there is still a gap between the block 142 and the cabinet bottom plate 31.

[0062] In other embodiments, the substrate 141 can also be a circular plate. In this case, the limiting sidewall 132 cannot prevent the nut block 14 from rotating, so the block 142 can be square. At the same time, the exposed hole 1111 of the channel steel is a square hole, so that when the block 142 rotates, it can abut against the hole wall of the exposed hole 1111 of the channel steel, thereby preventing the nut block 14 from rotating.

[0063] When the substrate 141 is a circular plate and the block 142 is a cube, only one limiting plate 13 can be provided, which is an integral annular plate. At this time, the limiting bottom wall 131 is an annular plate and the limiting side wall 132 is a cylindrical tube. In the horizontal plane, the substrate 141 can contact the limiting side wall 132 when it moves in any direction.

[0064] In other embodiments, regardless of whether the substrate 141 is a circular plate or a square plate, there is another way to set the limiting plate 13. In this way, there is only one limiting plate 13. The limiting plate 13 is a U-shaped plate with the slot facing upward. That is, the limiting bottom wall 131 extends continuously and connects the limiting side walls 132 on both sides. At this time, there are also two limiting side walls 132, but they are the two limiting side walls of the same limiting plate 13.

[0065] In other embodiments, the substrate 141 can be a square plate, and the block 142 can be a cube. In this case, the limiting plate 13 can be as follows: Figure 5There are two such arrangements, or there can be a U-shaped plate with the notch facing upwards. At the same time, the exposed hole 1111 of the channel steel is a square hole. At this time, there are gaps between the substrate 141 and the limiting side wall 132, and between the block 142 and the hole wall of the exposed hole 1111 of the channel steel. When the gaps are the same, both the limiting side wall 132 and the hole wall of the exposed hole 1111 of the channel steel can prevent the nut block 14 from rotating.

[0066] In other embodiments, the substrate 141 can be a circular plate, and at the same time, the block 142 is cylindrical. At this time, both the exposed hole 1111 of the channel steel and the limiting side wall 132 cannot prevent the nut block 14 from rotating. Two pin holes can be provided on the bottom surface of the substrate 141, and positioning pins are fixed at the corresponding positions of the limiting bottom wall 131. When installing and fixing the limiting plate 13, the two positioning pins are respectively inserted into the pin holes. Of course, the diameter of the pin holes is larger than the diameter of the positioning pins to allow the nut block 14 to have a certain amount of movement. However, when the nut block 14 rotates to a certain extent, the two positioning pins can prevent further rotation. At this time, the outer peripheral surface of the positioning pins constitutes an anti-rotation surface.

[0067] In other embodiments, the nut block can only include the substrate and does not include the block extending into the exposed hole of the profiled steel. At this time, the orifice of the threaded hole is located on the upper end surface of the substrate. As long as the length of the bolt is sufficient to connect with the threaded hole.

[0068] In other embodiments, when the thickness of the base bottom plate is sufficient, the limiting plate can be fixed on the lower end surface of the base bottom plate, that is, the limiting plate is no longer fixed on the profiled steel. At this time, the exposed hole is only opened on the base bottom plate.

[0069] In other embodiments, the base body can also be only composed of a frame and no longer includes the base bottom plate. At this time, the limiting plate is still fixed on the profiled steel, and the exposed hole is only opened on the top wall of the profiled steel.

[0070] In other embodiments, when the base body includes a solid bar, a through "convex" shaped groove, that is, an inverted T-shaped groove, can also be machined on the solid bar. The nut block is loaded from the opening at one end of the groove. In order to limit the movement range of the nut block, blocking members can be additionally fixed on both sides of the nut block after it is loaded.

[0071] The implementation manner of the prefabricated cabin body in the present utility model is: the specific structure of the prefabricated cabin body is the same as that of the cabin body in the above-mentioned prefabricated cabin implementation manner, and will not be repeated here.

[0072] The implementation manner of the prefabricated cabin base in the present utility model is: the specific structure of the prefabricated cabin base is the same as that of the base in the above-mentioned prefabricated cabin implementation manner, and will not be repeated here.

[0073] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. The patent protection scope of the present utility model shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present utility model shall also be included within the protection scope of the present utility model.

Claims

1. A prefabricated cabin base, characterized in that, The device includes a base body and a nut block. The nut block has a threaded hole for engaging with a bolt passing through the bottom plate of the cabinet. The base body has a mounting structure for mounting the nut block without it protruding from the base body. The mounting structure includes a space for the nut block to move in a direction perpendicular to the axis of the threaded hole, an exposed hole for the threaded hole to always be exposed during the movement of the nut block, a support surface for supporting the nut block when the bolt is not installed or when the bolt is loosened, an anti-rotation surface for preventing the nut block from rotating during bolt installation, and a stop surface for limiting the upward movement of the nut block to its limit position.

2. The prefabricated cabin base according to claim 1, characterized in that, The base body includes a frame and a base plate fixed to the top surface of the frame. The frame includes structural steel. The exposed holes include structural steel exposed holes opened on the top wall of the structural steel and base plate exposed holes opened on the base plate. A limiting plate is fixed on the bottom surface of the top wall of the structural steel. The bottom surface of the top wall of the structural steel constitutes the stop surface. The limiting plate includes a bottom wall and a side wall. The upper surface of the bottom wall constitutes the support surface. The upper end of the side wall is fixed to the bottom surface of the top wall of the structural steel. There is a gap between the side wall and the nut block. This gap constitutes the movable space or is part of the movable space.

3. The prefabricated cabin base according to claim 2, characterized in that the nut The block includes a base plate and a block located at the center of the upper end of the base plate with a cross-sectional area smaller than that of the base plate. The opening of the threaded hole is located on the upper end face of the block. The block extends into the exposed hole of the steel profile. The gap between the block and the exposed hole of the steel profile is also part of the movable space. The base plate is located between the bottom surface of the top wall of the steel profile and the bottom wall of the limiting plate.

4. The prefabricated cabin base according to claim 3, characterized in that, The sidewall has two parallel straight walls, and the exposed hole of the steel profile has a continuous four-sided hole wall.

5. The prefabricated cabin base according to claim 4, characterized in that, The substrate is square-shaped, and the inner surface of the sidewall forms the anti-rotation surface.

6. The prefabricated cabin base according to claim 4 or 5, characterized in that, There are two limiting plates spaced apart. Both limiting plates are L-shaped and symmetrically arranged. The two side walls are formed by the side walls of the two limiting plates.

7. The prefabricated cabin base according to any one of claims 3 to 5, characterized in that, The exposed holes of the steel profiles are round, and the blocks are cylindrical.

8. The prefabricated cabin base according to any one of claims 1 to 5, characterized in that, The threaded hole has a flared expansion hole at the opening, so that when the threaded hole and the cabinet fixing hole are misaligned, the bolt can be used to abut against the wall of the expansion hole to guide the nut block to be in the correct position.

9. A prefabricated cabin body, including a base and walls fixed to the base, characterized in that, The base is the prefabricated cabin base as described in any one of claims 1 to 8.

10. A prefabricated cabin, comprising a cabin body and a cabinet fixed within the cabin body, the cabin body comprising a base and walls fixed to the base, the cabinet being fixed to the base by bolts passing through the base plate of the cabinet, characterized in that, The base is the prefabricated cabin base as described in any one of claims 1 to 8.

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