A single-layer steel connection and fixing system

Abstract

This invention provides a single-layer steel connection and fixing system, belonging to the field of building engineering technology. This system constructs a virtual model of the single-layer steel connection based on single-layer steel connection drawings and performs a safety assessment of the area surrounding the connection location. The single-layer steel to be connected and fixed is placed in the corresponding position using a crane, and the connection location is aligned using a precise positioning device. The single-layer steel is initially connected using a temporary fixing device. A thermal expansion and contraction mechanism is installed between the initially connected single-layer steel sections, and the single-layer steel is then fixedly connected using a fixing device. The temporary fixing device is then removed. This single-layer steel connection and fixing system solves the problem of difficulty in aligning the connection location of single-layer steel during connection and fixing; it also addresses the problem of the high thermal expansion and contraction coefficient of single-layer steel, which makes the connection location prone to breakage and poses a danger.

Description

Technical Field

[0001] This invention belongs to the field of building engineering technology, and more specifically, relates to a single-layer steel connection and fixing system. Background Technology

[0002] Single-layer steel structures are lightweight and high-strength, offering excellent seismic performance. They can be used to construct large-span (9-40m) and wide-column-spacing (4-15m) factories, workshops, and warehouses, while also providing aesthetically pleasing architecture, smooth roof drainage, and good waterproofing. Most components of single-layer steel structures are manufactured in factories, ensuring high precision and quality. On-site installation is simply a matter of hoisting, guaranteeing construction quality. Single-layer steel structures can be connected using either high-strength bolts or welding, offering simple and convenient construction, rapid installation, small footprint, and immunity to seasonal limitations such as rainy or winter seasons.

[0003] Chinese invention patent CN110241924B (application number CN201910634476.3) discloses a prefabricated beam-column connection structure and its construction method, including an upper column, a middle column, a lower column, and a beam, and also including an upper connector, a middle connector, and a lower connector that are respectively connected to the upper column, the middle column, and the lower column. The middle column has support holes on its four sides, and the beam passes through the support holes laterally and is fixed by fasteners. Concrete is poured into the upper column, the lower column, and the middle column through the top of the upper column, thus improving the overall stability and strength.

[0004] However, it is difficult to align the connection position of single-layer steel when it is connected and fixed. At the same time, due to the high coefficient of thermal expansion and contraction of single-layer steel, the connection position is prone to breakage, which can cause danger. Summary of the Invention

[0005] In view of this, the present invention provides a single-layer steel connection and fixing system, which can solve the problem that it is difficult to align the connection position of single-layer steel when connecting and fixing it; at the same time, it can solve the problem that the high coefficient of thermal expansion and contraction of single-layer steel makes the connection position prone to breakage and cause danger.

[0006] This invention is implemented as follows:

[0007] This invention provides a single-layer steel connection and fixing system, wherein the specific operation steps include:

[0008] S10: Construct a virtual model of the single-layer steel connection based on the single-layer steel connection drawings, and conduct a safety assessment of the area surrounding the single-layer steel connection location;

[0009] S20: Place the single-layer steel that needs to be connected and fixed in the corresponding position using a crane, and align the connection position of the single-layer steel using a precision positioning device;

[0010] S30: Initially connect the single-layer steel using temporary fixing devices;

[0011] S40: A thermal expansion and contraction mechanism is set between the initially connected single-layer steel, and the single-layer steel is fixedly connected by a fixed connection device;

[0012] S50: Remove the temporary fixing device.

[0013] The technical advantages of the single-layer steel connection and fixing system provided by this invention are as follows: Safety assessment of the area surrounding the single-layer steel connection location prevents potential hazards; a precise positioning device ensures accurate and rapid alignment between the two single-layer steel pieces, facilitating their fixing; a temporary fixing device further enhances the connection by securing the single-layer steel pieces; a thermal expansion and contraction mechanism prevents cracks caused by temperature changes during use, thus avoiding potential hazards; the fixing device secures the single-layer steel pieces; and the removal of the temporary fixing device improves the aesthetics of the connection between the single-layer steel pieces, facilitating other design and construction work.

[0014] Based on the above technical solution, the single-layer steel connection and fixing system of the present invention can be further improved as follows:

[0015] The fixed connection device is a connecting seat, which has three sets of connecting parts. Each set of connecting parts includes two coaxially arranged connecting parts, and the three sets of connecting parts are arranged perpendicularly to each other. Each connecting part is formed by connecting four connecting tubes. The connecting tubes are hollow tubes, and a thermal expansion and contraction mechanism is provided between the connecting tubes. The cross-section of the connecting tube is an isosceles trapezoidal structure, including an inner connecting plate and an outer connecting plate. The corresponding inner connecting plate and outer connecting plate are parallel to each other. The inner connecting plate and outer connecting plate are connected by two side connecting plates. The two side connecting plates of the four connecting tubes on each connecting part abut against each other and are tightly fixed by bolts. Weight reduction holes are provided on the inner connecting plate and the outer connecting plate.

[0016] Furthermore, the thermal expansion and contraction mechanism includes a fixed plate and multiple serpentine springs. The lower end of the fixed plate forms a mounting cavity, in which the multiple serpentine springs are disposed. The top surface of the fixed plate has a first screw hole, and the connecting pipe has a mounting groove positioned opposite the first screw hole. The mounting groove has a second screw hole corresponding to the first screw hole. A fixing bolt is also provided, with its upper end threadedly fixed in the second screw hole and its lower end inserted into the first screw hole and threadedly connected to it. The thermal expansion and contraction mechanism is fixed to the connecting seat by a filler material.

[0017] Furthermore, the specific operational steps of "setting a thermal expansion and contraction mechanism between the initially connected single-layer steels and fixing the single-layer steels together using a fixed connection device" include:

[0018] The connecting pipe is bent according to the shape of the single-layer steel to be connected, so that both ends of the connecting pipe are adapted to the connecting ends of the two single-layer steel pieces to be connected.

[0019] Weight reduction holes are made in the inner connecting plate and the outer connecting plate, and the side connecting plates of the connecting pipe are sequentially attached and fixed with bolts;

[0020] The thermal expansion and contraction mechanism is fixedly installed between the connecting pipes;

[0021] Weld the two ends of the connector to the two connecting ends of the two single-layer steel pieces that need to be connected.

[0022] Concrete is poured between the two single-layer steel pieces to secure them together.

[0023] The temporary fixing device is a cable fixing mechanism, which includes multiple connecting lugs, each corresponding to a position where the single-layer steel needs to be connected. A compression spring is provided between the single-layer steel, with both ends of the compression spring fixed to the inner sides of the two connecting lugs at the connection point of the single-layer steel. One end of the compression spring passes through the connecting lug and is connected to a cylinder. The output end of the cylinder is fixedly connected to the compression spring. The cylinder is used to adjust the distance between the single-layer steel.

[0024] Furthermore, the specific operational steps for "preliminarily connecting the single-layer steel using temporary fixing devices" include:

[0025] Multiple connecting lugs are welded to the connecting end of the single-layer steel. One end of the compression spring is fixed to the connecting lug on one side of the single-layer steel, and the other end passes through the corresponding connecting lug on the other side of the single-layer steel and is fixedly connected to the cylinder output end.

[0026] The cylinder applies a pulling force to one end of the compression spring to temporarily fix the single-layer steel;

[0027] The distance between the single-layer steel joints is adjusted using a cylinder.

[0028] The specific operational steps for assessing the stability of the single-layer steel connection, specifically in the step of "constructing a virtual model of the single-layer steel connection based on the single-layer steel connection drawings and conducting a safety assessment of the area surrounding the single-layer steel connection location," include:

[0029] Obtain the drawings of a single-layer steel connection and the environmental information of the area surrounding the connection location, and construct a virtual model of the single-layer steel connection based on the single-layer steel connection drawing information;

[0030] Based on the environmental information of the area surrounding the single-layer steel connection location and the virtual model of the single-layer steel connection, the registration results of the single-layer steel connection location area are analyzed.

[0031] Based on the construction materials and virtual model of single-layer steel connection, the aging degree of single-layer steel connection is analyzed, and the aging assessment results of single-layer steel connection materials are obtained.

[0032] The above analysis results were weighted and calculated to obtain the stability assessment results of the area around the single-layer steel connection location.

[0033] The precision positioning device includes a positioning mechanism and a tensioning mechanism. The positioning mechanism is used to precisely adjust the height and angle of the single-layer steel to align the positions of the single-layer steel. The tensioning mechanism is used to pull the single-layer steel to coincide in position.

[0034] The positioning mechanism includes a positioning cylinder, a positioning rope, a positioning ball, a positioning spring, and a rangefinder. The positioning cylinder is located at the bottom of the flange of the single-layer steel. One end of the positioning rope is wrapped around the positioning ball, and the other end of the positioning rope passes through the flange between the single-layer steel layers and is fixed thereon. One end of the positioning spring is fixed to the bottom center of the positioning cylinder, and the rangefinder is fixed to the other side of the positioning spring. The positioning ball is movably mounted on the rangefinder. The positioning mechanism also includes a stepper motor, which is located at the bottom of the positioning cylinder. One end of the positioning rope connected to the positioning ball is connected to the output shaft of the stepper motor.

[0035] The tensioning mechanism consists of four sets, each set at one of the four through-hole positions between the single-layer steel. The tensioning mechanism includes a tensioning rope and a tensioning motor, with the tensioning motor fixed at the position of the single-layer steel. One end of the tensioning rope is fixed to the output shaft of the tensioning motor, and the other end of the tensioning rope passes through the flange between the single-layer steel and is fixed thereon.

[0036] The precision positioning device also includes a controller, which is electrically connected to the cylinder, the rangefinder, the stepper motor, and the tension motor.

[0037] The beneficial effects of adopting the above-mentioned improved scheme are as follows: by setting up a positioning mechanism, the positions of the single-layer steel are aligned, saving manpower and improving docking efficiency; by setting up a positioning cylinder, positioning rope, and positioning ball, the single-layer steel is positioned and the direction of movement of the single-layer steel is measured; by setting up a positioning spring and a rangefinder, the distance that the single-layer steel needs to move is measured; by setting up a tensioning mechanism, the single-layer steel is pulled to align the positions of the two single-layer steel pieces; by setting up a tensioning rope, the single-layer steel is pulled; by setting up a tensioning motor, the power for the tensioning rope to pull the single-layer steel is provided; and by setting up a controller, the operation of the entire device is controlled.

[0038] Furthermore, the specific steps of the operation of "aligning the single-layer steel connection positions using a precise positioning device" include:

[0039] The first step is to fix the positioning mechanism and the tensioning mechanism at the designated positions of the two single-layer steel pieces to be connected, and adjust the single-layer steel accordingly based on the pressure value detected by the pressure sensor and the distance between the positioning spring and the bottom of the positioning cylinder measured by the rangefinder.

[0040] The second step involves using the tensioning mechanism to pull the tensioning rope, causing the two single-layer steel pieces to be connected to align.

[0041] Furthermore, the positioning cylinder has a double-layer structure, with the outer layer being made of aluminum and the inner layer being made of spring steel. A pressure sensor is provided between the outer and inner layers. There are four pressure sensors, which are distributed between the outer and inner layers of the positioning cylinder near the edge of the cylinder. The four pressure sensors are equidistant from the edge of the cylinder, and the angle between the line connecting two adjacent pressure sensors to the center of the circle is 90°.

[0042] The pressure sensor is electrically connected to the controller.

[0043] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by setting up a pressure sensor, the single-layer steel is positioned and the direction in which the single-layer steel needs to move is measured.

[0044] Compared with existing technologies, the beneficial effects of the single-layer steel connection and fixing system provided by this invention are as follows: Safety assessment of the area surrounding the single-layer steel connection location prevents potential hazards; a precise positioning device ensures accurate and rapid alignment of the two single-layer steel pieces, facilitating their fixing and solving the problem of difficulty in aligning the connection position during single-layer steel connection and fixing; a temporary fixing device further simplifies the connection; a thermal expansion and contraction mechanism prevents cracks in the single-layer steel due to temperature changes during use, addressing the issue of high thermal expansion and contraction coefficients in single-layer steel leading to easy breakage and potential hazards at the connection point; a fixed connection device secures the single-layer steel pieces; and the removal of the temporary fixing device results in a more aesthetically pleasing connection between the single-layer steel pieces, facilitating other design and construction processes. Attached Figure Description

[0045] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0046] Figure 1 The specific operating steps for a single-layer steel connection and fixing system;

[0047] Figure 2 This is a structural diagram of the connecting seat and the thermal expansion and contraction mechanism;

[0048] Figure 3 This is a schematic diagram of the cable fixing mechanism;

[0049] Figure 4 This is a schematic diagram of the positioning mechanism;

[0050] Figure 5 This is a schematic diagram of the tensioning mechanism;

[0051] Figure 6 This is a schematic diagram of the positioning cylinder.

[0052] Figure 7 This is a schematic diagram of the internal structure of the positioning cylinder;

[0053] Figure 8 This is an electrical connection diagram for a single-layer steel connection and fixing system;

[0054] The attached diagram lists the components represented by each number as follows:

[0055] 10. Connecting seat; 11. Connecting pipe; 111. Inner connecting plate; 112. Outer connecting plate; 113. Side connecting plate; 21. Fixing plate; 22. Snake spring; 23. Fixing bolt; 30. Cable fixing mechanism; 31. Connecting ear; 32. Compression spring; 33. Cylinder; 50. Positioning mechanism; 51. Positioning cylinder; 511. Pressure sensor; 52. Positioning rope; 53. Positioning ball; 54. Positioning spring; 55. Rangefinder; 56. Stepper motor; 60. Tensioning mechanism; 61. Tensioning rope; 62. Tensioning motor; 70. Controller. Detailed Implementation

[0056] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0057] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0058] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0059] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0060] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0061] like Figure 1-8 The image shows a first embodiment of a single-layer steel connection and fixing system provided by the present invention. In this embodiment, the specific operation steps include:

[0062] S10: Construct a virtual model of the single-layer steel connection based on the single-layer steel connection drawings, and conduct a safety assessment of the area surrounding the single-layer steel connection location;

[0063] S20: Place the single-layer steel that needs to be connected and fixed in the corresponding position using a crane, and align the connection position of the single-layer steel using a precision positioning device;

[0064] S30: Initially connect the single-layer steel using temporary fixing devices;

[0065] S40: A thermal expansion and contraction mechanism is set between the initially connected single-layer steel, and the single-layer steel is fixedly connected by a fixed connection device;

[0066] S50: Remove the temporary fixing device.

[0067] In use, construct a virtual model of the single-layer steel connection according to the single-layer steel connection drawings, and conduct a safety assessment of the area around the single-layer steel connection location; place the single-layer steel to be connected and fixed in the corresponding position using a crane, and align the single-layer steel to be connected in the position using a precision positioning device; initially connect the single-layer steel using a temporary fixing device; set a thermal expansion and contraction mechanism between the initially connected single-layer steel, and fix the single-layer steel to the connection using a fixed connection device; remove the temporary fixing device.

[0068] In the above technical solution, the fixed connection device is a connecting seat 10, which has three sets of connecting parts. Each set of connecting parts includes two coaxially arranged connecting parts, and the three sets of connecting parts are arranged perpendicularly to each other. Each connecting part is formed by connecting four connecting pipes 11. The connecting pipes 11 are hollow pipes, and a thermal expansion and contraction mechanism is provided between the connecting pipes 11. The cross-section of the connecting pipe 11 is an isosceles trapezoidal structure, including an inner connecting plate 111 and an outer connecting plate 112. The corresponding inner connecting plate 111 and outer connecting plate 112 are parallel to each other, and the inner connecting plate 111 and outer connecting plate 112 are connected by two side connecting plates 113. The two side connecting plates 113 of the four connecting pipes 11 on each connecting part abut against each other and are tightly fixed by bolts. Weight reduction holes are opened on the inner connecting plate 111 and the outer connecting plate 112.

[0069] Furthermore, in the above technical solution, the thermal expansion and contraction mechanism includes a fixed plate 21 and multiple serpentine springs 22. The lower end of the fixed plate 21 forms a mounting cavity, in which the multiple serpentine springs 22 are disposed. The top surface of the fixed plate 21 is provided with a first screw hole. The connecting pipe 11 is provided with a mounting groove at the position opposite to the first screw hole. The mounting groove is provided with a second screw hole, which corresponds to the first screw hole. A fixing bolt 23 is also provided. The upper end of the fixing bolt 23 is fixedly disposed in the second screw hole by thread, and the lower end of the fixing bolt 23 is inserted into the first screw hole and fixedly connected to the first screw hole by thread. The thermal expansion and contraction mechanism is fixed to the connecting seat 10 by a filler.

[0070] Furthermore, in the above technical solution, the specific operational steps of "setting a thermal expansion and contraction mechanism between the initially connected single-layer steels and fixing the single-layer steels together using a fixed connection device" include:

[0071] The connecting pipe 11 is bent according to the shape of the single-layer steel to be connected, so that both ends of the connecting pipe 11 are adapted to the connecting ends of the two single-layer steel pieces to be connected.

[0072] Weight reduction holes are made on the inner connecting plate 111 and the outer connecting plate 112, and the side connecting plates 113 of the connecting pipe 11 are tightly attached to each other and fixed with bolts.

[0073] A thermal expansion and contraction mechanism is fixedly installed between the connecting pipes 11;

[0074] Weld the two ends of the connector 10 to the two connecting ends of the two single-layer steel pieces that need to be connected.

[0075] Concrete is poured between the two single-layer steel pieces to secure them together.

[0076] In the above technical solution, the temporary fixing device is a cable fixing mechanism 30, which includes multiple connecting ears 31, which are respectively set at the positions where the single-layer steel needs to be connected; a compression spring 32 is set between the single-layer steel, and the two ends of the compression spring 32 are respectively fixed to the inner side of the two connecting ears 31 at the connection of the single-layer steel. One end of the compression spring 32 passes through the connecting ear 31 and is connected to the cylinder 33. The output end of the cylinder 33 is fixedly connected to the compression spring 32. The cylinder 33 is used to adjust the distance between the single-layer steel.

[0077] Furthermore, in the above technical solution, the specific operational steps for "preliminarily connecting the single-layer steel using temporary fixing devices" include:

[0078] Multiple connecting ears 31 are welded to the single-layer steel connection end position. One end of the compression spring 32 is fixed to the connecting ear 31 on one side of the single-layer steel, and the other end passes through the corresponding connecting ear 31 on the other side of the single-layer steel and is fixedly connected to the output end of the cylinder 33.

[0079] Cylinder 33 applies tension to one end of compression spring 32 to temporarily fix the single-layer steel;

[0080] The distance between the single-layer steel joints is adjusted by cylinder 33.

[0081] In the aforementioned technical solution, the specific operational steps for assessing the stability of the single-layer steel connection, specifically in the section "constructing a virtual model of the single-layer steel connection based on the single-layer steel connection drawings and conducting a safety assessment of the area surrounding the single-layer steel connection location," include:

[0082] Obtain the drawings of the single-layer steel connection and the environmental information of the area surrounding the connection location, and construct a virtual model of the single-layer steel connection based on the information in the single-layer steel connection drawings;

[0083] Based on the environmental information of the area surrounding the single-layer steel connection location and the virtual model of the single-layer steel connection, the registration results of the single-layer steel connection location area are analyzed.

[0084] Based on the construction materials and virtual model of single-layer steel connection, the aging degree of single-layer steel connection is analyzed, and the aging assessment results of single-layer steel connection materials are obtained.

[0085] The above analysis results were weighted and calculated to obtain the stability assessment results of the area around the single-layer steel connection location.

[0086] In the above technical solution, the precision positioning device includes a positioning mechanism 50 and a tensioning mechanism 60. The positioning mechanism 50 is used to precisely adjust the height and angle of the single layer of steel so that the positions of the single layers of steel are aligned; the tensioning mechanism 60 is used to pull the positions of the single layers of steel to coincide.

[0087] The positioning mechanism 50 includes a positioning cylinder 51, a positioning rope 52, a positioning ball 53, a positioning spring 54, and a rangefinder 55. The positioning cylinder 51 is located at the bottom of the flange of the single-layer steel. One end of the positioning rope 52 is wrapped around the positioning ball 53, and the other end of the positioning rope 52 passes through the flange between the single-layer steel and is fixed thereon. One end of the positioning spring 54 is fixed to the bottom center of the positioning cylinder 51, and the rangefinder 55 is fixed to the other side of the positioning spring 54. The positioning ball 53 is movably mounted on the rangefinder 55. The positioning mechanism 50 also includes a stepper motor 56, which is located at the bottom of the positioning cylinder 51. One end of the positioning rope 52 connected to the positioning ball 53 is connected to the output shaft of the stepper motor 56.

[0088] The tensioning mechanism 60 consists of 4 sets, which are respectively set at the 4 through-hole positions between the single layers of steel. The tensioning mechanism 60 includes a tensioning rope 61 and a tensioning motor 62. The tensioning motor 62 is fixed at the position of the single layer of steel. One end of the tensioning rope 61 is fixed to the output shaft of the tensioning motor 62, and the other end of the tensioning rope 61 passes through the flange between the single layers of steel and is fixed.

[0089] The precision positioning device also includes a controller 70, which is electrically connected to a cylinder 33, a rangefinder 55, a stepper motor 56, and a tension motor 62.

[0090] The rangefinder 55 can be a rangefinder of model KM-D450H produced by Shenzhen Kace Technology Co., Ltd.; the tension motor 62 can be a tension motor of model 80BLDC43730A-01 produced by Changzhou Bohong Electric Co., Ltd.; and the stepper motor 56 can be a stepper motor of model 86HN78-04-32Y produced by Guangzhou Deyue Technology Co., Ltd.

[0091] Furthermore, in the above technical solution, the specific steps of the operation of "aligning the connection positions of the single-layer steel using a precise positioning device" include:

[0092] The first step is to fix the positioning mechanism 50 and the tensioning mechanism 60 at the designated positions of the two single-layer steel pieces to be connected. Based on the pressure value detected by the pressure sensor 511 and the distance between the positioning spring 54 and the bottom of the positioning cylinder 51 measured by the rangefinder 55, the single-layer steel is adjusted accordingly.

[0093] The second step involves using the tensioning mechanism 60 to pull the tensioning rope 61, causing the two single-layer steel pieces to be connected to align.

[0094] Furthermore, in the above technical solution, the positioning cylinder 51 has a double-layer structure, with the outer layer being made of aluminum and the inner layer being made of spring steel. A pressure sensor 511 is provided between the outer and inner layers. There are four pressure sensors 511, which are distributed between the outer and inner layers of the positioning cylinder 51 near the edge of the cylinder. The four pressure sensors 511 are equidistant from the edge of the cylinder, and the angle between the line connecting two adjacent pressure sensors 511 to the center of the circle is 90°.

[0095] Pressure sensor 511 is electrically connected to controller 70.

[0096] The pressure sensor 511 can be a pressure sensor of model QLLF-13 manufactured by Shenzhen Qinheyuan Technology Co., Ltd.

[0097] Specifically, the principle of this invention is as follows: A virtual model of the single-layer steel connection is constructed based on the single-layer steel connection drawings; a safety assessment is conducted on the area surrounding the single-layer steel connection location; the single-layer steel to be connected and fixed is placed in the corresponding position using a crane; the connection location of the single-layer steel is aligned using a precise positioning device; the single-layer steel is initially connected using a temporary fixing device; a thermal expansion and contraction mechanism is set between the initially connected single-layer steels; the single-layer steel is then fixedly connected using a fixed connection device; and the temporary fixing device is then removed.

[0098] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for fixing a single-layer steel connection, characterized in that, The specific operating steps include: S10: Construct a virtual model of the single-layer steel connection based on the single-layer steel connection drawings, and conduct a safety assessment of the area surrounding the single-layer steel connection location; S20: Place the single-layer steel that needs to be connected and fixed in the corresponding position using a crane, and align the connection position of the single-layer steel using a precision positioning device; S30: Initially connect the single-layer steel using temporary fixing devices; S40: A thermal expansion and contraction mechanism is set between the initially connected single-layer steel, and the single-layer steel is fixedly connected by a fixed connection device; S50: Remove the temporary fixing device; The precision positioning device includes a positioning mechanism (50) and a tensioning mechanism (60). The positioning mechanism (50) is used to precisely adjust the height and angle of the single-layer steel so that the positions of the single-layer steel are aligned. The tensioning mechanism (60) is used to pull the positions of the single-layer steel to coincide. The positioning mechanism (50) includes a positioning cylinder (51), a positioning rope (52), a positioning ball (53), a positioning spring (54), and a rangefinder (55). The positioning cylinder (51) is located at the bottom of the flange of the single-layer steel. One end of the positioning rope (52) is wrapped around the positioning ball (53), and the other end of the positioning rope (52) passes through the flange between the single-layer steel and is fixed thereto. One end of the positioning spring (54) is fixed at the bottom center of the positioning cylinder (51), and the rangefinder (55) is fixed on the other side of the positioning spring (54). The positioning ball (53) is movably mounted on the rangefinder (55). The positioning mechanism (50) also includes a stepper motor (56). The stepper motor (56) is located at the bottom of the positioning cylinder (51). One end of the positioning rope (52) connected to the positioning ball (53) is connected to the output shaft of the stepper motor (56). The tensioning mechanism (60) consists of four sets, which are respectively set at the four through-hole positions between the single-layer steel. The tensioning mechanism (60) includes a tension rope (61) and a tensioning motor (62). The tensioning motor (62) is fixed at the position of the single-layer steel. One end of the tension rope (61) is fixed on the output shaft of the tensioning motor (62), and the other end of the tension rope (61) passes through the flange between the single-layer steel and is fixed. The precision positioning device also includes a controller (70), which is electrically connected to the cylinder (33), the rangefinder (55), the stepper motor (56), and the tension motor (62); The specific steps of the operation of "aligning the connection positions of the single-layer steel using a precise positioning device" include: The first step is to fix the positioning mechanism (50) and the tensioning mechanism (60) at the designated positions of the two single-layer steel pieces to be connected. Based on the pressure value detected by the pressure sensor (511) and the distance between the positioning spring (54) and the bottom of the positioning cylinder (51) measured by the rangefinder (55), the single-layer steel is adjusted accordingly. The second step is to pull the tension rope (61) through the tensioning mechanism (60) to make the positions of the two single-layer steel pieces to be connected coincide.

2. The single-layer steel connection and fixing method according to claim 1, characterized in that, The fixed connection device is a connecting seat (10). The connecting seat (10) has three sets of connecting parts. Each set of connecting parts includes two connecting parts arranged coaxially. The three sets of connecting parts are arranged perpendicularly to each other. Each connecting part is formed by connecting four connecting tubes (11). The connecting tubes (11) are hollow tubes. A thermal expansion and contraction mechanism is provided between the connecting tubes (11). The cross-section of the connecting tube (11) is an isosceles trapezoidal structure, including an inner connecting plate (111) and an outer connecting plate (112). The corresponding inner connecting plate (111) and the outer connecting plate (112) are parallel to each other. The inner connecting plate (111) and the outer connecting plate (112) are connected by two side connecting plates (113). The two side connecting plates (113) of the four connecting tubes (11) on each connecting part abut against each other and are tightly fixed by bolts. Weight reduction holes are provided on the inner connecting plate (111) and the outer connecting plate (112).

3. The single-layer steel connection and fixing method according to claim 2, characterized in that, The thermal expansion and contraction mechanism includes a fixed plate (21) and multiple serpentine springs (22). The lower end of the fixed plate (21) forms a mounting cavity, and the multiple serpentine springs (22) are disposed in the mounting cavity. The top surface of the fixed plate (21) is provided with a first screw hole. The connecting pipe (11) is provided with a mounting groove at the position opposite to the first screw hole. The mounting groove is provided with a second screw hole, which corresponds to the first screw hole. A fixing bolt (23) is also provided. The upper end of the fixing bolt (23) is fixedly disposed in the second screw hole by thread, and the lower end of the fixing bolt (23) is inserted into the first screw hole and is fixedly connected to the first screw hole by thread. The thermal expansion and contraction mechanism is fixed to the connecting seat (10) by a filler.

4. The single-layer steel connection and fixing method according to claim 3, characterized in that, The specific operational steps of "setting a thermal expansion and contraction mechanism between the initially connected single-layer steels and fixing the single-layer steels together using a fixed connection device" include: The connecting pipe (11) is bent according to the shape of the single-layer steel to be connected, so that the two ends of the connecting pipe (11) are respectively adapted to the connecting ends of the two single-layer steels to be connected; Weight reduction holes are made on the inner connecting plate (111) and the outer connecting plate (112), and the side connecting plates (113) of the connecting pipe (11) are tightly attached to each other and fixed with bolts. The thermal expansion and contraction mechanism is fixedly installed between the connecting pipes (11); Weld the two ends of the connector (10) to the two connecting ends of the two single-layer steel pieces that need to be connected; Concrete is poured between the two single-layer steel pieces to secure them together.

5. The single-layer steel connection and fixing method according to claim 1, characterized in that, The temporary fixing device is a cable fixing mechanism (30), which includes multiple connecting ears (31). The multiple connecting ears (31) are respectively set at the positions where the single-layer steel needs to be connected. A compression spring (32) is provided between the single-layer steel. The two ends of the compression spring (32) are respectively fixed to the inner sides of the two connecting ears (31) at the connection of the single-layer steel. One end of the compression spring (32) passes through the connecting ear (31) and is connected to the cylinder (33). The output end of the cylinder (33) is fixedly connected to the compression spring (32). The cylinder (33) is used to adjust the distance between the single-layer steel.

6. The single-layer steel connection and fixing method according to claim 5, characterized in that, The specific operational steps for "preliminarily connecting the single-layer steel using temporary fixing devices" include: Multiple connecting lugs (31) are welded to the connecting end of the single-layer steel. One end of the compression spring (32) is fixed to the connecting lug (31) on one side of the single-layer steel, and the other end passes through the corresponding connecting lug (31) on the other side of the single-layer steel and is fixedly connected to the output end of the cylinder (33). The cylinder (33) applies a pulling force to one end of the compression spring (32) to temporarily fix the single-layer steel. The distance between the single-layer steel joints is adjusted by the cylinder (33).

7. The single-layer steel connection and fixing method according to claim 1, characterized in that, The specific operational steps for assessing the stability of the single-layer steel connection in the process of "constructing a virtual model of the single-layer steel connection based on the single-layer steel connection drawings and conducting a safety assessment of the area surrounding the single-layer steel connection location" include: Obtain the drawings of a single-layer steel connection and the environmental information of the area surrounding the connection location, and construct a virtual model of the single-layer steel connection based on the single-layer steel connection drawing information; Based on the environmental information of the area surrounding the single-layer steel connection location and the virtual model of the single-layer steel connection, the registration results of the single-layer steel connection location area are analyzed. Based on the construction materials and virtual model of single-layer steel connection, the aging degree of single-layer steel connection is analyzed, and the aging assessment results of single-layer steel connection materials are obtained. The above analysis results were weighted and calculated to obtain the stability assessment results of the area around the single-layer steel connection location.

8. A single-layer steel connection and fixing method according to claim 7, characterized in that, The positioning cylinder (51) has a double-layer structure, with the outer layer being made of aluminum and the inner layer being made of spring steel. A pressure sensor (511) is provided between the outer and inner layers. There are four pressure sensors (511), which are distributed between the outer and inner layers of the positioning cylinder (51) near the edge of the cylinder. The four pressure sensors (511) are at the same distance from the edge of the cylinder, and the angle between the line connecting two adjacent pressure sensors (511) to the center of the circle is 90°. The pressure sensor (511) is electrically connected to the controller (70).

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