I-shaped steel connecting device, I-shaped steel connecting assembly and connecting method thereof

Abstract

The invention belongs to the technical field of steel structure connection, and discloses an I-shaped steel connecting device, an I-shaped steel connecting assembly and a connecting method thereof. Comprising a connecting sleeve and a fastener, the internal hollow shape of the section of the connecting sleeve is matched with the section shape of the I-shaped steel, so that the two to-be-connected I-shaped steel can be quickly inserted and butted, and the construction efficiency is improved; through cooperation of the connecting sleeve and the fastening piece, the I-shaped steel can be fixed in the connecting sleeve through the fastening piece, the requirement for a welding seam is lowered, and the connecting strength and reliability are improved; the welding rod can locally weld the joint of the I-shaped steel through the welding notch in the connecting sleeve, the length of the welding seam is greatly shortened, and the risk that base metal deforms or cracks due to thermal stress is reduced. According to the I-shaped steel connecting device, the double fixing modes of mechanical connection and welding are utilized, the butt joint process is simplified, the complex welding technology on site is avoided, the construction efficiency and the connecting quality are improved, recycling can be achieved, and the cost is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of steel structure connection, and in particular to an I-beam connection device, an I-beam connection assembly and a connection method thereof. Background Art

[0002] I-beam, also known as I-shaped steel, is a type of steel with a cross-sectional shape similar to the letter "I". Its structure consists of two parallel flanges and a vertical web. The flanges mainly bear the bending moment, and the web bears the shear force. I-beams are widely used in engineering structures such as buildings, bridges, ships, and vehicles because of their high strength and good bearing capacity. I-beams are usually produced in fixed lengths, but their production length and shape cannot fully meet construction needs; extension measures are usually used to adjust the length of the steel to meet the design requirements of specific loads, spans, bends or shapes.

[0003] The main connection method of I-beams is welding. If manual welding is used, it often requires high welding skills of on-site welders. Porosity, slag inclusions, cracks and other defects are prone to occur during welding. These problems will reduce the strength and toughness of the weld and affect the reliability of the connection. The high temperature of welding will cause thermal expansion and cooling contraction of the materials around the I-beam, thereby generating thermal stress concentration, which may cause deformation or cracking of the parent material. In addition, the strength of the weld is usually lower than that of the parent material. Under long-term load, stress concentration is prone to occur at the weld joint, which will lead to fatigue damage, cracks or damage. Summary of the invention

[0004] The object of the present invention is to provide an I-beam connecting device, an I-beam connecting assembly and a connecting method thereof, which can realize fast and accurate docking of I-beams, reduce the length of welds, reduce the thermal impact of welding on parent materials, reduce the interference of weld quality on the reliability of I-beam connections, effectively optimize the I-beam docking process, significantly improve construction efficiency and connection quality, meet the needs of modern engineering for high-reliability connections of I-beams, can be recycled, and save costs.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] An I-beam connecting device, wherein the I-beam comprises an upper flange, a lower flange and a web, wherein the upper flange and the lower flange are arranged in parallel, and the web is vertically connected between the upper flange and the lower flange, wherein the I-beam connecting device comprises:

[0007] A connecting sleeve, wherein the hollowed-out shape of the interior of the connecting sleeve cross section matches the cross section shape of the I-beam; the two I-beams to be connected can be respectively inserted into the connecting sleeve from both ends of the connecting sleeve along the length direction thereof, and can be butted in the connecting sleeve; the connecting sleeve comprises an upper flange sleeve, a web sleeve and a lower flange sleeve, a first positioning hole is provided on the side wall of the web sleeve, a welding notch is provided at the top end of the upper flange sleeve and the bottom end of the lower flange sleeve, and each of the welding notches is located at the butt joint position of the two I-beams to be connected;

[0008] A fastener, which can be passed through the first positioning hole and pressed against or connected to the I-beam to fix the I-beam in the connecting sleeve.

[0009] Furthermore, the first positioning holes are symmetrically distributed on the side wall of the web sleeve along the vertical center axis of the connecting sleeve; the welding notch (3) at the top end of the upper flange sleeve and the welding notch at the bottom end of the lower flange sleeve are both located on the vertical center axis of the connecting sleeve.

[0010] Furthermore, the first positioning holes are symmetrically distributed in a rectangular array on both sides of the vertical center axis of the connecting sleeve.

[0011] Furthermore, the welding notches at the top end of the upper flange sleeve and the bottom end of the lower flange sleeve are symmetrically distributed along the transverse center axis of the connecting sleeve.

[0012] Furthermore, a second positioning hole is provided at the connecting end of the webs of the two I-beams to be connected. After the two I-beams to be connected are butt-jointed in the connecting sleeve, the position of the second positioning hole corresponds one-to-one to the position of the first positioning hole, and the fastener can pass through the first positioning hole and the second positioning hole to fix the position between the two I-beams to be connected and the connecting sleeve.

[0013] Furthermore, the fastener includes a bolt, and the bolt includes a screw rod and a nut. The screw rod can pass through the first positioning hole and the second positioning hole. The nut is threadedly connected to the screw rod and can be pressed against the inner side wall of the web sleeve.

[0014] Furthermore, the I-beam connecting device also includes a reinforcing rib assembly, and the reinforcing rib assembly is symmetrically arranged on both side walls of the connecting sleeve along the transverse center axis of the connecting sleeve.

[0015] Furthermore, the reinforcement rib assembly includes a first reinforcement rib and a second reinforcement rib, wherein a plurality of the first reinforcement ribs are arranged along the vertical axis of the connecting sleeve, one end of each of the first reinforcement ribs is connected to the upper flange sleeve, and the other end of each of the first reinforcement ribs is connected to the lower flange sleeve; a plurality of the second reinforcement ribs are arranged along the horizontal axis of the connecting sleeve, and the length of each of the second reinforcement ribs is consistent with the length of the web sleeve.

[0016] An I-beam connection assembly comprises at least two I-beams and an I-beam connection device as described in any one of the above items, and two adjacent I-beams can be connected by the I-beam connection device.

[0017] An I-beam connection method, wherein the above-mentioned I-beam connection device is used, and the I-beam connection method comprises the following steps:

[0018] S1: hoisting the I-beam to be connected and the I-beam connecting device to the connection site;

[0019] S2: inserting two adjacent I-beams into the connecting sleeve from both ends in the length direction of the connecting sleeve respectively, and butting them together in the connecting sleeve;

[0020] S3: inserting the fastener through the first positioning hole on the connecting sleeve and pressing or connecting the fastener with the I-beam to fix the I-beam in the connecting sleeve;

[0021] S4: Passing a welding rod through the welding notch to weld the butt joints of the two I-beams.

[0022] Beneficial effects of the present invention:

[0023] The present invention provides an I-beam connecting device, an I-beam connecting assembly and a connecting method thereof, comprising a connecting sleeve and a fastener, wherein the connecting sleeve comprises an upper flange sleeve, a web sleeve and a lower flange sleeve, and the hollow shape of the internal cross-section of the connecting sleeve matches the cross-section shape of the I-beam, so that two I-beams to be connected can be quickly inserted and docked, reducing cumbersome alignment operations and improving construction efficiency; through the coordinated cooperation of the connecting sleeve and the fastener, the I-beam is mainly fixed in the connecting sleeve by the first positioning hole provided by the fastener through the connecting sleeve. , the demand for welds is reduced, so that the stability of the I-beam connection does not completely rely on the quality of the welds. Even if there are slight defects in the welds, such as pores, slag inclusions or cracks, high connection strength and reliability can still be guaranteed; by designing the welding notch at the top of the upper flange sleeve and the bottom of the lower flange sleeve, the welding rod can weld the two I-beams to be connected locally through the welding notch, which greatly shortens the weld length. Since only local welding is performed, the heated area is reduced, the thermal impact of high-temperature welding on the I-beam parent material is reduced, and the risk of deformation or cracking of the parent material due to thermal stress is reduced. The I-beam connection device, I-beam connection assembly and connection method thereof use the dual fixing methods of mechanical connection and welding to simplify the docking process, avoid complex on-site welding processes, improve construction efficiency and connection quality, meet the needs of modern engineering for high-reliability connections of I-beams, can be recycled, and save costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a front view of the I-beam connecting device of the present invention;

[0025] Figure 2 is a side view of the I-beam connecting device of the present invention;

[0026] Figure 3 is a top view of the I-beam connecting device of the present invention;

[0027] Figure 4 is a process diagram of inserting two I-beams to be connected into a connecting sleeve in the present invention;

[0028] Figure 5 It is a schematic diagram of the structure after two I-beams to be connected are inserted into a connecting sleeve in the present invention.

[0029] In the figure:

[0030] 100, I-beam; 101, upper flange; 102, lower flange; 103, web;

[0031] 1. Connecting sleeve; 11. Upper flange sleeve; 12. Web sleeve; 13. Lower flange sleeve; 2. First positioning hole; 3. Welding notch; 4. Fastener; 5. Second positioning hole; 6. Reinforcement rib assembly; 61. First reinforcement rib; 62. Second reinforcement rib. DETAILED DESCRIPTION

[0032] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0033] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0036] Please refer to Figures 1 to 5As shown, the present invention provides an I-beam connection device, which can achieve fast and accurate docking of I-beams 100, reduce the length of welds, reduce the thermal impact of welding on the parent material, reduce the interference of weld quality on the connection reliability of I-beams 100, effectively optimize the docking process of I-beams 100, significantly improve construction efficiency and connection quality, meet the needs of modern engineering for high-reliability connection of I-beams 100, and can be recycled and reused to save costs. The I-beam connection device provided by the present invention is used for docking of I-beams 100. I-beams 100 include upper flanges 101, lower flanges 102 and webs 103. The upper flanges 101 and lower flanges 102 are arranged in parallel. The webs 103 are vertically connected between the upper flanges 101 and the lower flanges 102. The I-beam connection device includes a connecting sleeve 1 and a fastener 4, wherein the hollow shape of the internal cross-section of the connecting sleeve 1 matches the cross-sectional shape of the I-beam 100; the two I-beams 100 to be connected can be respectively inserted from the two ends of the connecting sleeve 1 along the length direction thereof. The connecting sleeve 1 is inside and can be butt-jointed inside the connecting sleeve 1; the connecting sleeve 1 comprises an upper flange sleeve 11, a web sleeve 12 and a lower flange sleeve 13, a first positioning hole 2 is opened on the side wall of the web sleeve 12, welding notches 3 are opened at the top end of the upper flange sleeve 11 and the bottom end of the lower flange sleeve 13, and each welding notch 3 is located at the butt joint position of two I-beams 100 to be connected; the fastener 4 can be passed through the first positioning hole 2 and pressed against or connected with the I-beam 100 to fix the I-beam 100 to be connected in the connecting sleeve 1.

[0037] The connecting sleeve 1 includes an upper flange sleeve 11, a web sleeve 12 and a lower flange sleeve 13. The hollow shape of the internal cross-section of the connecting sleeve 1 matches the cross-section shape of the I-beam 100, so that the two I-beams 100 to be connected can be smoothly inserted into the connecting sleeve 1, and the two I-beams 100 to be connected can be quickly inserted and docked, reducing cumbersome alignment operations and improving construction efficiency; through the coordinated cooperation of the connecting sleeve 1 and the fastener 4, the fastener 4 is inserted into the first positioning hole 2 opened in the connecting sleeve 1, and a direct fixing force is provided by mechanical bite and locking, so that the connection of the I-beam 100 is no longer completely dependent on the strength provided by the weld, and the demand for the weld is reduced, so that the stability of the connection of the I-beam 100 is not completely dependent on the quality of the weld. Even if there are slight defects in the weld, such as pores, slag inclusions or cracks, the connecting sleeve 1 is wrapped It covers the outer sides of the two I-beams 100 to be connected, provides additional support and positioning effects for the I-beams 100, effectively disperses stress concentration, reduces the burden on a single weld, and ensures higher connection strength and reliability; by designing the welding notch 3 at the top end of the upper flange sleeve 11 and the bottom end of the lower flange sleeve 13, the welding rod can weld the two I-beams 100 to be connected locally through the welding notch 3, which greatly shortens the weld length. Since it is only local welding, the heated area is reduced compared to a long weld, which reduces the thermal impact of high-temperature welding on the parent material of the I-beam 100, and reduces the risk of deformation or cracking of the parent material due to thermal stress; and when a project is completed, the fasteners 4 can be removed, the welds of the two I-beams 100 can be knocked off to separate them, and they can be separated from the connecting sleeve 1, thereby realizing the reuse of the I-beam connecting device. Therefore, the I-beam connection device uses a dual fixing method of mechanical connection and welding, which simplifies the docking process, avoids complicated on-site welding processes, improves construction efficiency and connection quality, meets the needs of modern engineering for 100% high-reliability connections of I-beams, can be recycled, and saves costs.

[0038] It can be understood that the upper flange sleeve 11, the web sleeve 12 and the lower flange sleeve 13 of the connecting sleeve 1 are an integrated structure. The construction personnel do not need to assemble the connecting sleeve 1 or perform complicated installation steps, so that the I-beam 100 can be quickly inserted and docked, simplifying the installation process.

[0039] like Figure 1As shown, in order to optimize the docking position, in some embodiments, the first positioning holes 2 are symmetrically distributed on the side walls of the web sleeve 12 along the vertical center axis of the connecting sleeve 1; the welding notches 3 at the top end of the upper flange sleeve 11 and the bottom end of the lower flange sleeve 13 are both located at the vertical center axis position of the connecting sleeve 1; wherein, the first positioning holes 2 are symmetrically distributed on the side walls of the web sleeve 12, and are coordinated with the welding notches 3 to be located at the vertical center axis position, and when the two I-beams 100 to be docked are inserted into the connecting sleeve 1, the seams of the upper flanges 101 and the lower flanges 102 thereof are just located in the welding notches 3, and the fasteners 4 pass through the symmetrical first positioning holes 2, and utilize mechanical bite and locking to connect the sleeve 1, thereby further consolidating the two I-beams 1 to be connected. 00 position alignment effect; such a design can provide a clear alignment reference for the two I-beams 100 to be connected, so that their joints are located at the vertical center axis position of the connecting sleeve 1, ensuring that the force at the connection between the two is more uniform. At the same time, the connecting sleeve 1 can also be symmetrically covered on the outside of the two connected I-beams 100, so that the connecting sleeve 1 can provide them with more stable additional support, thereby enhancing the overall stability of the connection; by symmetrically arranging the first positioning holes 2, it is possible to avoid eccentric moments at the connection parts of the I-beams 100, so that the structure has better performance under shear and bending loads; by locating the welding notch 3 on the vertical center axis, it is convenient for construction personnel to concentrate on the welding position, thereby improving welding quality and efficiency.

[0040] Continue as Figure 1 As shown, in order to enhance the connection strength, in some embodiments, the first positioning holes 2 are symmetrically distributed in a rectangular array on both sides of the vertical center axis of the connecting sleeve 1; wherein, compared with a single or a small number of first positioning holes 2, a rectangular array composed of multiple first positioning holes 2 can provide more fastening points for the fastener 4, making the connection between the two I-beams 100 to be connected and the connecting sleeve 1 more stable and reliable, while being able to better share the load, avoid local stress concentration, and enhance the overall stability and deformation resistance of the I-beam connecting device under various load conditions. It is understandable that the first positioning holes 2 can be set to 8, 12, etc. to form a rectangular array along the vertical center axis of the connecting sleeve 1, which is not specifically limited here.

[0041] like Figure 3As shown, in order to further enhance the connection strength, in some implementations, the welding notches 3 at the top of the upper flange sleeve 11 and the welding notches 3 at the bottom of the lower flange sleeve 13 are symmetrically distributed along the transverse central axis of the connecting sleeve 1; wherein, the welding notches 3 are symmetrically distributed along the transverse central axis, so that the welding positions of the upper flange 101 and the lower flange 102 are consistent, ensuring that the welding rod can accurately reach the connection position, ensuring that the two I-beams 100 are uniformly stressed in the connecting sleeve 1, thereby improving the connection strength. At the same time, this design can increase the number of welding points at the joint of the upper flange 101 and the lower flange 102, further enhancing the firmness and stability of the welding position.

[0042] like Figure 4 As shown, in order to improve the accuracy of docking positioning and the connection strength, in some embodiments, the connecting ends of the webs 103 of the two I-beams 100 to be connected are each provided with a second positioning hole 5. After the two I-beams 100 to be connected are docked in the connecting sleeve 1, the position of the second positioning hole 5 corresponds to the position of the first positioning hole 2 one by one, and the fastener 4 can penetrate the first positioning hole 2 and the second positioning hole 5 to fix the position between the two I-beams 100 to be connected and the connecting sleeve 1; wherein, a second positioning hole 5 is provided at the connecting ends of the webs 103 of the two I-beams 100 to be connected. When the two I-beams 100 to be connected are docked in the connecting sleeve 1, the position of the second positioning hole 5 corresponds to the position of the first positioning hole 2 one by one, and the fastener 4 penetrates the first positioning hole 2 and the second positioning hole 5, which can ensure the position accuracy of the two I-beams 100 to be connected in the connecting sleeve 1, effectively avoid docking deviation caused by errors, and improve the accuracy of docking positioning. At the same time, the fastener 4 directly fixes the I-beam 100 and the web sleeve 12 through the first positioning hole 2 and the second positioning hole 5, which can effectively improve the connection strength of the entire structure and ensure uniform load distribution.

[0043] Specifically, the fastener 4 includes a bolt, and the bolt includes a screw and a nut. The screw can pass through the first positioning hole 2 and the second positioning hole 5. The nut is threadedly connected to the screw and can be pressed against the inner wall of the web sleeve 12. Among them, the bolt connection mainly relies on mechanical fastening methods, which reduces the adverse effects of weld quality problems on the connection strength and improves the reliability and durability of the connection. In addition, the bolt connection method simplifies the construction process, which is convenient for the connection sleeve 1 to be turned over and recycled by removing the bolts after the project cycle is completed, thereby reducing subsequent construction costs and resource waste.

[0044] In order to extend the service life of the connecting sleeve 1, in some embodiments, the fastener 4 further includes a gasket, and the side of the screw rod in contact with the web sleeve 12 and the side of the nut in contact with the web sleeve 12 are both provided with a gasket; wherein the gasket plays a buffering role, can effectively reduce the direct contact between the screw rod and the web sleeve 12 and the nut and the web sleeve 12, reduce friction, and slow down the wear rate. It is understandable that the gasket can be, but is not limited to, a rubber gasket or a metal gasket, which is not specifically limited here.

[0045] like Figure 2 As shown, in order to enhance the structural strength of the I-beam connecting device, in some embodiments, the I-beam connecting device also includes a reinforcing rib assembly 6, which is symmetrically arranged on the two side walls of the connecting sleeve 1 along the transverse center axis of the connecting sleeve 1; wherein, through the reinforcing rib assembly 6, the bending, torsion and tensile resistance of the two side walls of the connecting sleeve 1 are effectively improved, deformation is reduced, and the overall stiffness and bearing capacity of the structure are improved.

[0046] like Figure 1 As shown, specifically, the reinforcing rib assembly 6 includes a first reinforcing rib 61 and a second reinforcing rib 62. A plurality of first reinforcing ribs 61 are arranged along the vertical axis of the connecting sleeve 1. One end of each first reinforcing rib 61 is connected to the upper flange sleeve 11, and the other end of each first reinforcing rib 61 is connected to the lower flange sleeve 13. A plurality of second reinforcing ribs 62 are arranged along the horizontal axis of the connecting sleeve 1. The length of each second reinforcing rib 62 is consistent with the length of the web sleeve 12. By arranging a plurality of first reinforcing ribs 61 along the vertical axis of the connecting sleeve 1, each first reinforcing rib 61 passes through the web. The sleeve 12 is longitudinally provided, which enhances the connection strength between the web sleeve 12 and the upper flange sleeve 11 and the lower flange sleeve 13, provides additional supporting force, and improves the longitudinal bearing capacity of the I-beam connection device; by arranging multiple second reinforcing ribs 62 along the transverse direction of the connecting sleeve 1, each second reinforcing rib 62 passes through the transverse direction of the web sleeve 12, thereby enhancing the overall bending stiffness and bearing capacity of the web sleeve 12, and improving the lateral resistance of the structure; therefore, the first reinforcement and the second reinforcing rib 62 can effectively enhance the longitudinal and transverse structural strength of the I-beam connection device.

[0047] Furthermore, the first reinforcing rib 61 can be arranged at the vertical center axis position of the web sleeve 12 and on both sides of the vertical center axis of the web sleeve 12. By arranging the first reinforcing rib 61 at the center axis position in the length direction of the web sleeve 12 and on both sides symmetrical to its center axis, the stress load can be effectively dispersed and the overall bending resistance of the structure can be enhanced. In addition, since the connection between the web sleeve 12 and the upper flange sleeve 11 and the lower flange sleeve 13 is the area that bears the maximum load in the overall structure, the second reinforcing rib 62 can be arranged at the connection between the web sleeve 12 and the upper flange sleeve 11 and the connection between the web sleeve 12 and the lower flange sleeve 13, which can effectively enhance the bending stiffness and bearing capacity of these connections.

[0048] In order to facilitate the smooth entry of the I-beam 100 into the connecting sleeve 1, in some embodiments, the internal hollow size of the cross section of the connecting sleeve 1 is larger than the external contour size of the I-beam 100; wherein, the above design can reduce the friction resistance between the I-beam 100 and the connecting sleeve 1 during the installation process, and can make the I-beam 100 more smoothly inserted into the connecting sleeve 1, avoiding the installation difficulties caused by the I-beam 100 being stuck or over-tightened during the installation process. Specifically, the internal hollow size of the cross section of the connecting sleeve 1 can be 2 mm to 3 mm larger than the external contour size of the I-beam 100, so as to facilitate the smooth insertion of the I-beam 100.

[0049] It can be understood that the connecting sleeve 1 and the fastener 4 can be made of, but not limited to, steel material, and no specific limitation is made herein.

[0050] The present invention also provides an I-beam connection assembly, comprising at least two I-beams 100 and an I-beam connection device in any of the above embodiments, wherein two adjacent I-beams 100 can be connected by the I-beam connection device. The I-beam connection assembly integrates multiple I-beams into a complete structure through the connection device, does not require complex on-site processing, simplifies the construction process, improves installation efficiency, and saves construction time.

[0051] The present invention also provides an I-beam connecting method, using the above-mentioned I-beam connecting device, the I-beam connecting method comprises the following steps:

[0052] S1: hoisting the I-beam 100 to be connected and the I-beam connecting device to the connection site;

[0053] S2: inserting two adjacent I-beams 100 into the connecting sleeve 1 from both ends in the length direction of the connecting sleeve 1, and butting them together in the connecting sleeve 1;

[0054] S3: insert the fastener 4 through the first positioning hole 2 on the connecting sleeve 1, and press or connect the fastener 4 with the I-beam 100 to fix the I-beam 100 in the connecting sleeve 1;

[0055] S4: Pass the welding rod through the welding notch 3 to weld the butt joints of the two I-beams 100 .

[0056] Through the cooperation of the connecting sleeve 1 and the fastener 4 in the I-beam connecting assembly, the hollow shape of the internal cross section of the connecting sleeve 1 matches the cross section shape of the I-beam 100, so that the I-beam 100 to be connected can be quickly inserted and docked, thereby improving the construction efficiency; the fastener 4 is inserted into the first positioning hole 2 and is pressed against or connected to the I-beam 100, so that the I-beam 100 can be fixed in the connecting sleeve 1 by the fastener 4, thereby reducing the demand for the weld and improving the connection strength and reliability; the welding rod can weld the joint of the I-beam 100 locally through the welding notch 3 provided on the connecting sleeve, thereby greatly shortening the weld length and reducing the risk of deformation or cracking of the parent material due to thermal stress. The I-beam connection method utilizes the dual fixing methods of mechanical connection and welding, simplifies the docking process, avoids the complex welding process on site, improves the construction efficiency and connection quality, can be recycled, and saves costs.

[0057] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An I-beam connecting device, wherein the I-beam (100) comprises an upper flange (101), a lower flange (102) and a web (103), wherein the upper flange (101) and the lower flange (102) are arranged in parallel, and the web (103) is vertically connected between the upper flange (101) and the lower flange (102), characterized in that: The I-beam connecting device comprises: A connecting sleeve (1), wherein the hollowed-out shape of the interior of the cross section of the connecting sleeve (1) matches the cross section shape of the I-beam (100); the two I-beams (100) to be connected can be respectively inserted into the connecting sleeve (1) from both ends of the connecting sleeve (1) along the length direction thereof, and can be butted in the connecting sleeve (1); the connecting sleeve (1) comprises an upper flange sleeve (11), a web sleeve (12) and a lower flange sleeve (13), a first positioning hole (2) is provided on the side wall of the web sleeve (12), a welding notch (3) is provided at the top end of the upper flange sleeve (11) and the bottom end of the lower flange sleeve (13), and each of the welding notches (3) is located at the butt joint position of the two I-beams (100) to be connected; A fastener (4), wherein the fastener (4) can be inserted into the first positioning hole (2) and pressed against or connected to the I-beam (100) to fix the I-beam (100) in the connecting sleeve (1).

2. The I-beam connecting device according to claim 1, characterized in that: The first positioning holes (2) are symmetrically distributed on the side wall of the web sleeve (12) along the vertical center axis of the connecting sleeve (1); the welding notches (3) at the top end of the upper flange sleeve (11) and the bottom end of the lower flange sleeve (13) are both located on the vertical center axis of the connecting sleeve (1).

3. The I-beam connecting device according to claim 2, characterized in that: The first positioning holes (2) are symmetrically distributed in a rectangular array on both sides of the vertical center axis of the connecting sleeve (1).

4. The I-beam connecting device according to claim 2, characterized in that: The welding notch (3) at the top end of the upper flange sleeve (11) and the welding notch (3) at the bottom end of the lower flange sleeve (13) are both symmetrically distributed along the transverse center axis of the connecting sleeve (1).

5. The I-beam connecting device according to claim 3, characterized in that: The connecting ends of the webs (103) of the two I-beams (100) to be connected are each provided with a second positioning hole (5). After the two I-beams (100) to be connected are butt-jointed in the connecting sleeve (1), the position of the second positioning hole (5) corresponds one-to-one to the position of the first positioning hole (2). The fastener (4) can penetrate the first positioning hole (2) and the second positioning hole (5) to fix the position between the I-beam (100) and the connecting sleeve (1).

6. The I-beam connecting device according to claim 5, characterized in that: The fastener (4) comprises a bolt, and the bolt comprises a screw rod and a nut. The screw rod can pass through the first positioning hole (2) and the second positioning hole (5). The nut is threadedly connected to the screw rod and can be pressed against the inner wall of the web sleeve (12).

7. The I-beam connecting device according to claim 1, characterized in that: The I-beam connecting device further comprises a reinforcing rib assembly (6), wherein the reinforcing rib assembly (6) is symmetrically arranged on two side walls of the connecting sleeve (1) along the transverse central axis of the connecting sleeve (1).

8. The I-beam connecting device according to claim 7, characterized in that: The reinforcing rib assembly (6) comprises a first reinforcing rib (61) and a second reinforcing rib (62), wherein a plurality of the first reinforcing ribs (61) are arranged along the vertical axis of the connecting sleeve (1), one end of each of the first reinforcing ribs (61) is connected to the upper flange sleeve (11), and the other end of each of the first reinforcing ribs (61) is connected to the lower flange sleeve (13); a plurality of the second reinforcing ribs (62) are arranged along the horizontal axis of the connecting sleeve (1), and the length of each of the second reinforcing ribs (62) is consistent with the length of the web sleeve (12).

9. An I-beam connection assembly, comprising at least two I-beams (100), characterized in that: It also comprises the I-beam connecting device as described in claims 1-8, and two adjacent I-beams (100) can be connected by the I-beam connecting device.

10. I-beam connection method, characterized in that: Using the I-beam connecting device according to any one of claims 1 to 8, the I-beam connecting method comprises the following steps: S1: hoisting the I-beam (100) to be connected and the I-beam connecting device to a connection site; S2: inserting the two I-beams (100) into the connecting sleeve (1) from both ends of the connecting sleeve (1) in the length direction, and butting them together in the connecting sleeve (1); S3: inserting the fastener (4) through the first positioning hole (2) on the connecting sleeve (1), and pressing or connecting the fastener (4) with the I-beam (100), so as to fix the I-beam (100) in the connecting sleeve (1); S4: Passing a welding rod through the welding notch (3) to weld the butt joints of the two I-beams (100).

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