Purlin lengthening device
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- MCC (SHANGHAI) STEEL STRUCTURE TECHNOLOGY CORP LTD
- Filing Date
- 2025-07-03
- Publication Date
- 2026-08-07
AI Technical Summary
作为建筑节能、安全性和功能性的重要组成部分,同时设计人员为追求经济性,减少用钢量,缩短了墙面檩条长度,导致了墙面复合板无法正常安装
[0017] As described above, the purlin extension device provided by this utility model includes a first connecting plate and a second connecting plate connected by elongated holes and bolts. The connection length of the first connecting plate and the second connecting plate is adjustable. The first connecting plate and the second connecting plate are respectively connected to adjacent purlins, forming a connecting plate between adjacent purlins, thus increasing the installation points for the wall composite panel. This utility model, when the purlin length is limited, extends the purlin to increase the installation position of the composite panel, ensuring normal installation of the wall composite panel, and guaranteeing both economy and installation quality.
Smart Images

Figure CN224605744U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel structure building equipment technology, and more specifically, to a purlin extension device. Background Technology
[0002] The development of building envelopes is moving from single-function to integration, intelligence, and sustainability, becoming a key link in achieving the low-carbon transformation of buildings. As an important component of building energy conservation, safety, and functionality, however, designers, in pursuit of economy, have reduced steel usage and shortened wall purlin lengths, resulting in the inability to properly install wall composite panels. Currently, there is an urgent need for a device that can save materials while ensuring the proper installation of wall composite panels. Utility Model Content
[0003] In view of the above problems, the purpose of this utility model is to provide a purlin extension device for installation between the ends of adjacent purlins to facilitate the installation of wall composite panels.
[0004] This utility model provides a purlin extension device, comprising a first connecting plate and a second connecting plate, wherein...
[0005] The first connecting plate is a long strip of steel. The width of the first connecting plate is smaller than the width of the side of the composite panel to be installed on the purlin. Two through holes are provided at the first end of the first connecting plate along the width direction of the first connecting plate. Two elongated holes are provided at the second end of the first connecting plate along the width direction of the first connecting plate. The length direction of the elongated holes is parallel to the length of the first connecting plate. The through holes are connected to the end of the side of the composite panel to be installed on the purlin by a combination of first bolts and nuts.
[0006] The second connecting plate is a rectangular plate with a length less than that of the first connecting plate and a width the same as that of the first connecting plate. Two through holes are provided at one end of the second connecting plate. The distance between the two through holes is the same as the distance between the two elongated holes, and the diameter of the through holes is the same as the width of the elongated holes.
[0007] The first connecting plate and the second connecting plate are connected by a second bolt and nut set on the elongated hole and the through hole. The other end of the second connecting plate is welded and fixed to the purlin adjacent to the purlin. The composite plate is installed and fixed to the purlin, the first connecting plate and / or the second connecting plate.
[0008] One option is that the first connecting plate is a hot-rolled steel section.
[0009] One option is that the hot-rolled steel section is a channel steel.
[0010] One option is that the second connecting plate is a steel plate with the same width as the inner width of the channel steel.
[0011] One option is that the diameter of the through hole is not less than 10cm.
[0012] One option is to provide mounting holes corresponding to the through holes on the side end of the composite panel to be installed on the purlin.
[0013] One option is that the diameter of the perforation is not less than 10cm.
[0014] One option is that the second bolt and nut assembly includes a high-strength friction bolt and a nut.
[0015] One option is that the first bolt and nut assembly includes a high-strength bolt and a nut.
[0016] One possible solution is that, in the wall purlin structure, the purlin is perpendicular to and not connected to the adjacent purlin, the second connecting plate is welded to the end of the adjacent purlin, the first connecting plate is installed at the end of the purlin, and the elongated hole and the through hole are aligned one-to-one and connected by a combination of second bolts and nuts.
[0017] As described above, the purlin extension device provided by this utility model includes a first connecting plate and a second connecting plate connected by elongated holes and bolts. The connection length of the first connecting plate and the second connecting plate is adjustable. The first connecting plate and the second connecting plate are respectively connected to adjacent purlins, forming a connecting plate between adjacent purlins, thus increasing the installation points for the wall composite panel. This utility model, when the purlin length is limited, extends the purlin to increase the installation position of the composite panel, ensuring normal installation of the wall composite panel, and guaranteeing both economy and installation quality. Attached Figure Description
[0018] Other objects and results of this invention will become more apparent and readily understood upon referring to the following description taken in conjunction with the accompanying drawings, and with a more complete understanding of the invention. In the drawings:
[0019] Figure 1 This is a schematic diagram of the purlin lengthening device according to an embodiment of the present utility model;
[0020] Figure 2 This is a schematic diagram of the structure of the first connecting plate according to an embodiment of the present utility model;
[0021] Figure 3 This is a schematic diagram of the structure of the second connecting plate according to an embodiment of the present utility model;
[0022] Figure 4This is a schematic diagram illustrating the application of the purlin lengthening device according to an embodiment of the present utility model;
[0023] Among them, 1-first connecting plate, 2-second connecting plate, 3-through hole, 4-elongated hole, 5-through hole, 6-mounting hole, 7-first bolt and nut assembly, 8-second bolt and nut assembly;
[0024] In all the accompanying drawings, the same reference numerals indicate similar or corresponding features or functions. Detailed Implementation
[0025] This invention can be modified in various ways and has various embodiments, with specific embodiments illustrated in the accompanying drawings. However, this invention is not limited to this specific implementation and all modifications, equivalents, and substitutions falling within the spirit and technical scope of this invention are to be understood as included.
[0026] Ordinal terms such as "first," "second," etc., may be used to describe various constituent elements, but the constituent elements are not limited to these terms. The terms are used only to distinguish one constituent element from another. For example, without departing from the scope of the claims of this utility model, a second constituent element may be named a first constituent element, and similarly, a first constituent element may be named a second constituent element. Terms and / or include combinations of multiple associated items or one of multiple associated items.
[0027] It should be understood that when referring to a constituent element being "connected" or "in contact" with other constituent elements, this includes not only cases where it is directly connected or in contact with other constituent elements, but also cases where other constituent elements exist between them. Conversely, when referring to a constituent element being "directly connected" or "directly in contact" with other constituent elements, it should be understood that no other constituent elements exist between them.
[0028] In the description of the embodiments, when it is stated that a certain component is formed "on or under" other components, "on or under" includes both two components that are in direct contact with each other and at least one other component that is configured to be formed between the two components. Furthermore, when expressed as "on or under", based on a certain component, it refers not only to the upper direction but may also include the lower direction.
[0029] The terminology used in this application is for illustrative purposes only and is not intended to limit the scope of the invention. Unless the context clearly specifies otherwise, singular expressions include plural expressions. In this application, terms such as "comprising" or "having" are used to specify the presence of features, numbers, steps, operations, constituent elements, components, or combinations thereof described in the specification, and do not preclude the presence or additional possibilities of one or more other features, numbers, steps, operations, constituent elements, components, or combinations thereof.
[0030] Unless otherwise defined, including technical or scientific terms, all terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. Terms as defined in commonly used dictionaries should be interpreted in a meaning consistent with their meaning in the context of the relevant art, and should not be construed as having an ideal or overly formal meaning unless explicitly defined in this application.
[0031] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0032] Figure 1 This is a schematic diagram of the purlin lengthening device according to an embodiment of the present utility model; Figure 2 This is a schematic diagram of the structure of the first connecting plate according to an embodiment of the present utility model; Figure 3 This is a schematic diagram of the structure of the second connecting plate according to an embodiment of the present utility model; Figure 4 This is a schematic diagram illustrating the application of the purlin lengthening device according to an embodiment of the present utility model;
[0033] like Figures 1-4 As shown, the purlin extension device proposed in this embodiment can be used to extend the purlins of steel structures to assist in the installation of composite wall panels, and can also be used to extend the purlins of other steel structures to assist in the installation of composite panels.
[0034] This purlin extension device includes a first connecting plate 1 and a second connecting plate 2 connected by bolts. Based on the installation of the composite panel, the two purlins that need to be connected are determined, and the first connecting plate 1 and the second connecting plate 2 are connected between the two purlins to ensure stable installation of the composite panel.
[0035] To facilitate the installation of the first connecting plate 1, the first connecting plate 1 is a long strip of steel. The width of the first connecting plate 1 is smaller than the width of the side of the composite panel to be installed on the purlin. Two through holes 3 are provided at the first end of the first connecting plate 1 along the width direction, and two elongated holes 4 are provided at the second end of the first connecting plate 1 along the width direction. The length direction of the elongated holes 4 is parallel to the length of the first connecting plate 1. The through holes 3 are connected to the mounting holes 6 at the end of the side of the composite panel to be installed on the purlin by the first bolt and nut assembly 7.
[0036] The width of the first connecting plate 1 is determined according to the width of the purlin and should be equivalent to the width of the purlin. The length of the first connecting plate 1 should be such that it can be installed precisely between the two purlins after being connected to the second connecting plate 2. The first connecting plate 1 is connected to the purlin by two sets of bolts and nuts, and can be firmly connected to the purlin.
[0037] To facilitate adjustment of the connection length between the first connecting plate 1 and the second connecting plate 2, two elongated holes 4 are provided at the other end of the first connecting plate 1. The second connecting plate 2 and the first connecting plate 1 are connected by bolts through the elongated holes 4.
[0038] In order to be used in conjunction with the first connecting plate 1, the second connecting plate 2 is a rectangular plate with a length less than the length of the first connecting plate 1 and a width the same as the width of the first connecting plate 1. Two through holes 5 are provided at one end of the second connecting plate 2. The distance between the two through holes 5 is the same as the distance between the two elongated holes 4, and the diameter of the through holes 5 is the same as the width of the elongated holes 4.
[0039] Based on the connection configuration of the two purlins, the lengths of the first connecting plate 1 and the second connecting plate 2 are determined, with the second connecting plate 2 being shorter than the first connecting plate 1. The second connecting plate 2 has through holes 5 that correspond one-to-one with the elongated holes 4 on the first connecting plate 1. The overlap length between the second connecting plate 2 and the first connecting plate 1 can be fine-tuned according to the required length for actual connection, thereby adjusting the position of the overlapping through holes 5 and elongated holes 4. Then, the second bolt and nut assembly 8 is used to fix the second connecting plate 2 and the first connecting plate 1. The elongated holes 4 facilitate flexible installation of the first connecting plate 1 and the second connecting plate 2.
[0040] For a secure connection, the other end of the second connecting plate 2 can be welded and fixed to the corresponding purlin. The composite panel is installed and fixed to the purlin, the first connecting plate, and / or the second connecting plate. The provision of the first connecting plate and / or the second connecting plate increases the number of installation points for the composite panel, allowing for stable installation.
[0041] In one specific embodiment of this utility model, in order to ensure the first connecting plate 1 is sturdy and durable, the first connecting plate 1 can be made of hot-rolled steel. The specifications of the hot-rolled steel are determined according to the specifications of the purlin, and it can be stably connected to the purlin surface to be installed.
[0042] In one specific embodiment of this utility model, the hot-rolled steel section can be a channel steel. The web of the channel steel is flat and can fit flush with the mounting end face of the purlin, which facilitates installation. The width of the web can be determined according to the width of the mounting end face of the purlin.
[0043] In one specific embodiment of this utility model, in order to ensure a stable connection between the second connecting plate 2 and the first connecting plate 1, the second connecting plate 2 is a steel plate with a width equal to the inner width of the channel steel. The second connecting plate 2 is snapped into the channel steel without shifting, ensuring a stable and secure installation. The materials of both the first connecting plate 1 and the second connecting plate 2 are primarily Q235B and Q355B.
[0044] In one specific embodiment of this utility model, the diameter of the through hole 3 on the first connecting plate 1 is not less than 10cm, and bolts and nuts of M10 or higher can firmly connect the first connecting plate 1 and the purlin. The diameter of the through hole 5 on the second connecting plate 2 is not less than 10cm, and bolts and nuts of M10 or higher can firmly connect the second connecting plate 2 and the first connecting plate 1.
[0045] In one specific embodiment of this utility model, mounting holes 6 corresponding to the through holes 3 are provided on the side end of the composite plate to be installed on the purlin. The first bolt and nut assembly 7 is installed in the corresponding mounting holes 6 and through holes 3.
[0046] In one specific embodiment of this utility model, the second bolt and nut assembly 8 includes a high-strength friction bolt and a nut. The high-strength friction bolt and nut can stably connect the elongated hole 4 of the first connecting plate 1 and the through hole 5 of the second connecting plate 2, preventing the bolt from loosening. The first bolt and nut assembly 7 may include a high-strength bolt and a nut, which can stably connect the through hole 3 of the first connecting plate 1 and the mounting hole 6 of the purlin, preventing the bolt from loosening. A friction surface base layer treatment is performed on the first connecting plate 1 and the second connecting plate 2.
[0047] This purlin extension device can be used between any two adjacent purlins that need to be connected, either between two horizontally opposite purlins or between two vertically opposite purlins. In a specific embodiment of this utility model, in a wall purlin structure, at a right-angle corner of the wall, two adjacent purlins are vertically opposite but not connected. This purlin extension device can be installed horizontally between the vertically opposite ends of the two purlins. The second connecting plate 2 is vertically welded to the end of one of the purlins and extends to the other purlin. The first connecting plate 1 is installed on the mounting hole 6 at the end of the other purlin. The first connecting plate 1 is on the same plane as this purlin. The second connecting plate 2 and the first connecting plate 1 are fitted together. The elongated hole 4 of the first connecting plate 1 and the through hole 5 of the second connecting plate 2 are aligned one-to-one and connected by a second bolt and nut assembly 8. The elongated hole 4 can flexibly connect the second connecting plate 2. The wall composite panel is installed to the purlins, the first connecting plate 1, and the second connecting plate 2 by rivets.
[0048] If installed between horizontally opposite purlins, the second connecting plate 2 is welded to the end of one purlin and extends towards the other purlin. The first connecting plate 1 is installed in the mounting hole 6 at the end of the other purlin. The first connecting plate 1, the second connecting plate 2, and the two purlins are aligned in a straight line. The second connecting plate 2 and the first connecting plate 1 are fitted together. The elongated hole 4 of the first connecting plate 1 and the through hole 5 of the second connecting plate 2 are aligned one-to-one and connected by a second bolt and nut assembly 8. The elongated hole 4 allows for flexible connection of the second connecting plate 2. The composite plate is installed to the purlins, the first connecting plate 1, and the second connecting plate 2 by rivets.
[0049] The purlin lengthening device according to the present invention has been described above by way of example with reference to the accompanying drawings. However, those skilled in the art should understand that various modifications can be made to the purlin lengthening device proposed in the present invention without departing from the scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the contents of the appended claims.
Claims
1. A purlin lengthening device, characterized in that, Includes a first connecting plate and a second connecting plate, wherein, The first connecting plate is a long strip of steel. The width of the first connecting plate is smaller than the width of the side of the composite panel to be installed on the purlin. Two through holes are provided at the first end of the first connecting plate along the width direction of the first connecting plate. Two elongated holes are provided at the second end of the first connecting plate along the width direction of the first connecting plate. The length direction of the elongated holes is parallel to the length of the first connecting plate. The through holes are connected to the end of the side of the composite panel to be installed on the purlin by a combination of first bolts and nuts. The second connecting plate is a rectangular plate with a length less than that of the first connecting plate and a width the same as that of the first connecting plate. Two through holes are provided at one end of the second connecting plate. The distance between the two through holes is the same as the distance between the two elongated holes, and the diameter of the through holes is the same as the width of the elongated holes. The first connecting plate and the second connecting plate are connected by a second bolt and nut set on the elongated hole and the through hole. The other end of the second connecting plate is welded and fixed to the purlin adjacent to the purlin. The composite plate is installed and fixed to the purlin, the first connecting plate and / or the second connecting plate.
2. The purlin lengthening device as described in claim 1, characterized in that, The first connecting plate is a hot-rolled steel section.
3. The purlin lengthening device as described in claim 2, characterized in that, The hot-rolled steel section is a channel steel.
4. The purlin lengthening device as described in claim 3, characterized in that, The second connecting plate is a steel plate with the same width as the inner width of the channel steel.
5. The purlin lengthening device as described in claim 1, characterized in that, The diameter of the through hole is not less than 10cm.
6. The purlin lengthening device as described in claim 1, characterized in that, Mounting holes corresponding to the through holes are provided on the side end of the composite plate to be installed on the purlin.
7. The purlin lengthening device as described in claim 1, characterized in that, The diameter of the perforation is not less than 10cm.
8. The purlin lengthening device as described in claim 1, characterized in that, The second bolt and nut assembly includes a high-strength friction bolt and a nut.
9. The purlin lengthening device as described in claim 1, characterized in that, The first bolt and nut assembly includes a high-strength bolt and a nut.
10. The purlin lengthening device as described in claim 1, characterized in that, In the wall purlin structure, the purlin is perpendicular to and not connected to the adjacent purlin. The second connecting plate is welded to the end of the adjacent purlin. The first connecting plate is installed at the end of the purlin. The elongated hole and the through hole are aligned one-to-one and connected by a second bolt and nut combination.