Workshop steel structure riveting installation device
By combining a pneumatic core pulling rivet gun and an electromagnetic heating kit in the riveting installation device, the core pulling rivet composed of silicon nitride ceramic and steel columns is solved, and the problems of loose connections and complex operation in the traditional riveting method are achieved efficient and stable The factory steel structure riveting improves work efficiency and riveting quality.
Patent Information
- Application Number
- CN202411687441.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2025-01-03
AI Technical Summary
In the traditional riveting process, cold riveting is prone to loose connections under high load conditions, and the thermal riveting method is complex and has low efficiency, which affects the stability and working efficiency of the factory structure.
A steel structure riveting installation device in the factory was designed, combining a pneumatic core pulling rivet gun and an electromagnetic heating kit, and using a core pulling rivet composed of silicon nitride ceramics and steel columns to achieve rapid heating and precision through a micro electric push rod and infrared temperature sensor. Control, simplify operational processes and improve riveting efficiency.
It improves the convenience and efficiency of riveting, ensures the firmness and stability of the connection, reduces the labor intensity of the operator, and improves the riveting quality through precise guidance of deformation.
Smart Images
Figure CN119237647A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of riveting, and in particular to a riveting installation device for a factory steel structure. Background Art
[0002] During the construction of factory buildings, the stable connection of light steel structures or truss mechanisms is crucial to the safety and stability of the entire building, and riveting is one of the commonly used connection methods; traditional riveting processes mainly include hot riveting and cold riveting. Cold riveting is relatively simple to operate and is performed at room temperature. It can be quickly riveted using pneumatic blind rivet guns in existing technologies; however, in some connection scenarios of light steel structures or truss mechanisms in factories that require extremely high connection strength, cold riveting may expose obvious shortcomings. Since the rivets are not heated, the plasticity of the rivet material is not improved. When subjected to large loads, the connection is prone to looseness and instability, which in turn affects the overall performance of the factory structure.
[0003] Although hot riveting can enhance the connection effect, the traditional hot riveting method is complicated to operate. In the traditional hot riveting process, additional heating equipment is required to heat the rivet. After heating, the heated rivet is placed in the rivet through hole and fixed with a mold clamp at one end of the rivet round head. The end of the rivet is hammered with a hammer or a pneumatic rivet gun in the prior art to complete the riveting. The steps are cumbersome and require high proficiency of the workers, resulting in low work efficiency. In order to solve the shortcomings of the existing technology, this article proposes a riveting installation device for factory steel structures. Summary of the invention
[0004] The main purpose of the present invention is to provide a riveting installation device for a factory steel structure, which can effectively solve the problems in the background technology.
[0005] To achieve the above object, the technical solution adopted by the present invention is: A riveting installation device for a factory building steel structure comprises a pneumatic core-pulling rivet gun and a core-pulling rivet, wherein the core-pulling rivet is connected and installed in the gun nozzle of the pneumatic core-pulling rivet gun, a rivet gun heating kit is installed on the gun head of the pneumatic core-pulling rivet gun, and the rivet gun heating kit is mainly composed of an electromagnetic heating coil and an electromagnetic heating controller, a connecting cable is connected between the electromagnetic heating coil and the electromagnetic heating controller, an inner ring of the electromagnetic heating coil is coaxially telescopically installed on the outer periphery of the gun head of the pneumatic core-pulling rivet gun, and the electromagnetic heating controller is fixedly installed on the top of the pneumatic core-pulling rivet gun; The blind rivet includes a hollow rivet sleeve and a core rod. The head end of the core rod is coaxially fixedly installed in the hollow rivet sleeve. The core rod is mainly composed of a silicon nitride ceramic column and a steel column. The silicon nitride ceramic column is coaxially arranged at the end of the hollow rivet sleeve. The end of the silicon nitride ceramic column and the head end of the steel column are coaxially fixedly connected.
[0006] Preferably, a protective cover is coaxially fixedly connected to the periphery of the electromagnetic heating coil, a micro electric push rod is provided on one side of the protective cover, the outer shell in the micro electric push rod is fixedly connected to the top end of the pneumatic core-pulling rivet gun, and the push rod end in the micro electric push rod is fixedly connected to the protective cover.
[0007] Preferably, mutually parallel telescopic guide rods are provided on both sides of the micro electric push rod, and both ends of the telescopic guide rods are respectively fixedly connected to the top of the pneumatic core-pulling rivet gun and one side of the protective cover.
[0008] Preferably, a round head block is coaxially fixedly mounted on the head end of the hollow rivet sleeve, and circular holes communicating with each other are arranged in the hollow rivet sleeve and the round head block.
[0009] Preferably, a protruding spherical surface is fixedly connected to the end of the hollow rivet sleeve.
[0010] Preferably, a silicon nitride ceramic round block is fixedly mounted on the head end of the silicon nitride ceramic column, and a spherical groove that matches the outer wall of the protruding spherical surface is provided on the inner side of the silicon nitride ceramic round block.
[0011] Preferably, the end of the silicon nitride ceramic column is coaxially fixedly connected with a silicon nitride ceramic rod, and the silicon nitride ceramic rod is embedded in the steel column.
[0012] Preferably, a plurality of cylinders are vertically fixedly connected between the silicon nitride ceramic plug rod and the steel column.
[0013] Preferably, a plurality of first annular pressing grooves are coaxially arranged on the periphery of the hollow rivet sleeve.
[0014] Preferably, a second annular groove is coaxially arranged on the outer edge of the end of the silicon nitride ceramic column.
[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. Convenient operation and improved efficiency The existing pneumatic blind rivet gun at the construction site was utilized, combined with a special structure of blind rivet designed specifically with the characteristics of rapid heating. This solved the problem that traditional blind rivets could not be directly hot-riveted on the pneumatic blind rivet gun due to material limitations, and avoided a series of troubles caused by tool incompatibility. In this process, the operating procedures were simplified, and the time for preparation and tool conversion was reduced. During the entire riveting operation, the operator did not need to switch back and forth between multiple tools. Only relying on the improved pneumatic blind rivet gun, the hot riveting operation could be completed quickly and efficiently, increasing the number of riveting per unit time. This convenience significantly improved work efficiency, and at the same time greatly reduced the labor intensity of operators, allowing them to focus more on riveting quality, making riveting work easier and more efficient, and ensuring the smooth construction of projects such as factory steel structures.
[0016] 2. Material performance optimization The core rod adopts a combination of silicon nitride ceramic and steel column structure, which fully considers the thermal expansion and mechanical property differences of different materials during the hot riveting process, so that the blind rivet and the riveted steel can be well adapted during the hot riveting process to ensure the connection quality. The silicon nitride ceramic blocks, silicon nitride ceramic columns and silicon nitride ceramic rods in key positions are made of silicon nitride ceramic, which has a tensile strength of about 800-1000MPa at a high temperature of 1100℃, and can stably extrude the hollow rivet sleeve to deform.
[0017] 3. Accurately guide deformation to improve riveting quality The design of the blind rivet achieves precise guidance of the rivet deformation. The first annular pressure groove on the hollow rivet sleeve can reduce the tensile force when under pressure, making the deformation uniform and stable. It also has the function of dispersing the stress generated by hot riveting deformation. The protruding spherical surface cooperates with the spherical groove of the silicon nitride ceramic block on the mandrel, which can effectively guide the deformation direction of the hollow rivet sleeve at the beginning and end during the hot riveting process, ensuring that under heating at 1000-1100℃ and tensile strength of 650-800MPa, the hollow rivet sleeve can perform high-quality extrusion riveting on both sides of the rivet through hole of the riveted steel, ensuring the firmness and stability of the steel structure connection of the factory.
[0018] 4. Precision control and equipment protection The micro electric push rod cooperates with the electromagnetic heating controller. The push rod is heated only when it is extended and placed at the left end of the gun nozzle of the pneumatic blind rivet gun, avoiding heating of the gun head and protecting the equipment. The infrared temperature sensor controls the heating temperature of the electromagnetic heating coil, and at the same time achieves precise control of the position and heating temperature, which is beneficial to improving the riveting quality and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2It is a structural schematic diagram of a pneumatic core-pulling rivet gun and a rivet gun heating kit in the present invention; Figure 3 It is a structural schematic diagram of the blind rivet in the present invention; Figure 4 is a cross-sectional view of the blind rivet of the present invention; Figure 5 It is a schematic structural diagram of the hollow rivet sleeve of the present invention; Figure 6 It is a structural schematic diagram of the core rod in the present invention.
[0020] In the figure: 1. Pneumatic blind rivet gun; 2. Blind rivet; 21. Hollow rivet sleeve; 211. First annular groove; 212. Protruding spherical surface; 213. Round hole; 214. Round head block; 22. Mandrel; 221. Silicon nitride ceramic round block; 222. Spherical groove; 223. Silicon nitride ceramic column; 224. Steel column; 225. Silicon nitride ceramic plug; 226. Second annular groove; 227. Cylinder; 3. Rivet gun heating kit; 31. Protective cover; 32. Electromagnetic heating coil; 33. Connecting cable; 34. Electromagnetic heating controller; 35. Micro electric push rod; 36. Telescopic guide rod; 37. Infrared temperature sensor. DETAILED DESCRIPTION
[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.
[0022] like Figure 1-6 As shown, a riveting and installation device for a factory steel structure includes a pneumatic blind rivet gun 1 of model LS-1215 in the prior art, a blind rivet 2 and a rivet gun heating kit 3, one end of the blind rivet 2 is connected and installed in the gun nozzle of the pneumatic blind rivet gun 1, and the rivet gun heating kit 3 is connected and installed on the gun head of the pneumatic blind rivet gun 1.
[0023] refer to Figure 1-2 The rivet gun heating kit 3 is mainly composed of an electromagnetic heating coil 32 and an electromagnetic heating controller 34. A connecting cable 33 is connected between the electromagnetic heating coil 32 and the electromagnetic heating controller 34. The inner ring of the electromagnetic heating coil 32 is coaxially telescopically installed on the periphery of the gun head of the pneumatic core-pulling rivet gun 1. The electromagnetic heating controller 34 is fixedly installed on the top of the pneumatic core-pulling rivet gun 1. The periphery of the electromagnetic heating coil 32 is coaxially fixedly connected with a protective sleeve 31. A micro electric push rod 35 is arranged on one side of the protective sleeve 31. The shell of the micro electric push rod 35 is fixedly connected to the top of the pneumatic core-pulling rivet gun 1, and the push rod end of the micro electric push rod 35 is fixedly connected to the protective sleeve 31. Both sides of the micro electric push rod 35 are provided with mutually parallel telescopic guide rods 36, and the two ends of the telescopic guide rod 36 are respectively fixedly connected to the top of the pneumatic blind rivet gun 1 and one side of the protective cover 31, and are mainly used to stably guide the electromagnetic heating coil 32 to telescope along the central axis of the gun nozzle of the pneumatic blind rivet gun 1.
[0024] It should be noted that the micro electric push rod 35 is connected to the electromagnetic heating controller 34 through a wire for signal connection, which mainly acts to feed back the telescopic state of the push rod in the micro electric push rod 35 to the electromagnetic heating controller 34. Only when the electromagnetic heating controller 34 receives the extension of the push rod in the micro electric push rod 35 and sets the electromagnetic heating coil 32 at the left end of the gun head of the pneumatic core-pulling rivet gun 1, the electromagnetic heating controller 34 will turn on the circuit in the electromagnetic heating coil 32. Figure 1 , the gun head of the pneumatic blind rivet gun 1 will not be heated, but the blind rivet 2 connected to the gun mouth of the pneumatic blind rivet gun 1 will be heated.
[0025] It should be introduced that the electromagnetic heating coil 32 adopts advanced electromagnetic technology, which can quickly respond to current changes, thereby realizing efficient energy conversion and transmission. The preheating time of the electromagnetic heating coil 32 is short, usually only 1 / 3-2 / 3 of the original time, which greatly improves the production efficiency. Under normal circumstances, the traditional pneumatic core-pulling rivet gun 1 does not need to be connected to a power source, and its working power mainly comes from compressed air. The compressed air is connected to the air inlet of the pneumatic core-pulling rivet gun 1 through an air pipe, pushing the piston inside the gun body to move, thereby driving the core rod 22 of the core-pulling rivet 2 to complete the riveting movement. This type of core rivet gun 1 has a relatively simple structure and relies on pneumatic principles to achieve mechanical movements. It can work normally even in an environment without power supply. However, the pneumatic core-pulling rivet gun 1 in this article is added with a rivet gun heating kit 3 for heating the core-pulling rivet 2, which needs to be connected to a power supply. That is, when the pneumatic core-pulling rivet gun 1 in this article is working, the electromagnetic heating coil 32, electromagnetic heating controller 34, micro electric push rod 35 and infrared temperature sensor 37 in the rivet gun heating kit 3 on the pneumatic core-pulling rivet gun 1 need to be connected to an external power supply through wires.
[0026] It should be noted that during the heating process, since there is no means to monitor the actual temperature of the hollow rivet sleeve, it is impossible to know whether its temperature has accurately reached the ideal range of 1000-1100°C, which may lead to various problems. If the heating temperature exceeds 1100°C, the material properties of the hollow rivet sleeve 21 may be damaged, and it is easy to crack or deform excessively, which seriously affects the riveting quality and greatly reduces the stability of the factory steel structure connection. If the heating temperature is lower than 1000°C, the plasticity of the hollow rivet sleeve 21 cannot be fully improved, which will make it difficult for the hollow rivet sleeve 21 to deform smoothly under the action of the core rod 22 and external pressure during riveting, and it cannot fit tightly on both sides of the rivet hole of the riveted steel. For this reason, an infrared temperature sensor 37 is vertically installed on the protective sleeve 31. The infrared temperature sensor 37 does not need to contact the object to be measured-the hollow rivet sleeve 21, and the temperature information can be obtained by measuring the infrared radiation on the surface of the hollow rivet sleeve 21. The infrared temperature sensor 37 is connected to the electromagnetic heating controller 34 through a wire, and the acquired temperature signal is transmitted to the electromagnetic heating controller 34 through the wire. A special signal processing module is provided inside the electromagnetic heating controller 34, which amplifies and filters the received temperature signal and converts it into a digital signal so that the electromagnetic heating controller 34 can recognize and analyze it. The electromagnetic heating controller 34 presets a temperature range of 1000-1100°C as a target value. When the processed temperature signal shows that the temperature of the hollow rivet sleeve 21 is lower than 1000°C, the electromagnetic heating controller 34 will increase the power of the electromagnetic heating coil 32 to speed up the heating speed; when the temperature is higher than 1100°C, the power of the electromagnetic heating coil 32 is reduced, and the heating is suspended to keep the temperature of the hollow rivet sleeve 21 within the ideal range of 1000-1100°C, thereby ensuring the stability and reliability of the riveting quality, and timely feedback to the electromagnetic heating controller 34, and the electromagnetic heating controller 34 controls the push rod in the micro electric push rod 35 to shrink, so that the hollow rivet sleeve 21 is completely exposed, which is used to remind the worker that the heating is completed and the positioning riveting can be carried out.
[0027] refer to Figure 3-4 The blind rivet 2 includes a hollow rivet sleeve 21 and a core rod 22. The head end of the core rod 22 is coaxially fixed in the hollow rivet sleeve 21. The hollow rivet sleeve 21 is the main structure for riveting, specifically made of steel, and can be electrically heated by the electromagnetic heating coil 32 in the rivet gun heating kit 3, while the core rod 22 is used for the core pulling operation.
[0028] refer to Figure 5The head end of the hollow rivet sleeve 21 is coaxially fixedly installed with a round head block 214, the diameter of which is larger than the inner diameter of the rivet through hole, and is used to press against the outer side of the rivet through hole for riveting steel on the light steel structure or truss mechanism in the factory building. The opening end surface of the nozzle of the pneumatic blind rivet gun 1 is provided with a positioning groove 101 that matches the outer wall of the round head block 214, that is, the nozzle of the pneumatic blind rivet gun 1 can stably press against the round head block 214 at the head end of the hollow rivet sleeve 21, and the hollow rivet sleeve 21 and the round head block 214 are provided with a positioning groove 101 that matches the outer wall of the round head block 214. The hollow rivet sleeve 21 is provided with a circular hole 213 which is interconnected with each other. The circular hole 213 is mainly used to connect the mandrel 22. The end of the hollow rivet sleeve 21 is fixedly connected with a protruding spherical surface 212. The protruding spherical surface 212 is mainly used to guide the direction of the initial deformation of the end of the hollow rivet sleeve 21 when the end of the hollow rivet sleeve 21 is compressed. The outer periphery of the hollow rivet sleeve 21 is coaxially and equidistantly provided with a plurality of first annular pressing grooves 211. The first annular pressing grooves 211 are concave inwardly and are also used to guide the end of the hollow rivet sleeve 21 to be compressed and deformed to a certain extent. The tensile force of the hollow rivet sleeve 21 under compression deformation is reduced to a certain extent. The plurality of first annular pressure grooves 211 disperse the segmented deformation of the hollow rivet sleeve 21, and can disperse the stress generated by the hollow rivet sleeve 21 during hot riveting deformation to a certain extent. In order to reduce the residual stress of the hollow rivet sleeve 21 after hot riveting, the hollow rivet sleeve 21 is squeezed evenly and slowly to reduce the generation of stress. After the hot riveting is completed, the riveted part can be wrapped with insulation cotton and other materials to allow the blind rivet 2 and the surrounding steel structure to slowly cool in a relatively stable temperature environment. However, the cooling speed is controlled. During the slow cooling process, the contraction of various parts of the blind rivet 2 is relatively coordinated, and there will be no large temperature gradient caused by local rapid cooling and contraction. The thermal stress concentration caused by uneven temperature can be effectively avoided. When the two sides of the first annular groove 211 on the hollow rivet sleeve 21 are squeezed and deformed against each other, the outer wall of the hollow rivet sleeve 21 will bend and deform along the first annular groove 211, so that the outer walls of the hollow rivet sleeve 21 on both sides of the first annular groove 211 are coaxially convex and deformed outward.
[0029] refer to Figure 6The core rod 22 is mainly composed of a silicon nitride ceramic column 223 and a steel column 224. The steel column 224 is arranged at the end of the silicon nitride ceramic column 223, mainly used for the material of the silicon nitride ceramic column 223, and reduces the cost. The silicon nitride ceramic column 223 is coaxially arranged at the end of the hollow rivet sleeve 21, and the diameters of the silicon nitride ceramic column 223 and the steel column 224 are the same as the inner diameter of the circular hole 213. The end of the silicon nitride ceramic column 223 and the head end of the steel column 224 are coaxially fixed. The silicon nitride ceramic column 223 is fixedly connected, and the head end thereof is coaxially fixedly installed with a silicon nitride ceramic round block 221, the diameter of the silicon nitride ceramic round block 221 is not less than the outer diameter of the hollow rivet sleeve 21, and the outer ring edge of the end of the silicon nitride ceramic column 223 is coaxially provided with a second annular pressing groove 226, and the second annular pressing groove 226 is used to reduce the diameter of the connection between the silicon nitride ceramic column 223 and the steel column 224, so as to facilitate the fracture separation between the silicon nitride ceramic column 223 and the steel column 224; The inner side of the silicon nitride ceramic block 221 is provided with a spherical groove 222 which matches the outer wall of the protruding spherical surface 212. The spherical groove 222 on the inner side of the silicon nitride ceramic block 221 is used to guide the deformation of the head end of the compressed hollow rivet sleeve 21. The end of the silicon nitride ceramic column 223 is coaxially fixedly connected with a silicon nitride ceramic rod 225. The silicon nitride ceramic rod 225 is embedded in the steel column 224. The silicon nitride ceramic rod 225 and the steel column 224 are embedded with each other to increase the mechanical strength of the head end of the steel column 224 under high temperature conditions. A number of cylinders 227 are vertically fixedly connected between the silicon nitride ceramic rod 225 and the steel column 224.
[0030] It is further explained that the silicon nitride ceramic round block 221, the silicon nitride ceramic column 223, and the silicon nitride ceramic plug 225 in the mandrel 22 are all made of silicon nitride ceramic in one piece. At present, when the pneumatic rivet gun of model M22 in the prior art is used for hot riveting, the heating temperature of the rivet is 1000-1100°C, that is, the heating temperature of the hollow rivet sleeve 21 is 1000-1100°C. Secondly, under the high temperature state of 1100°C, the tensile strength of silicon nitride ceramic is about 800-1 000MPa, the pressure range of the rivet during hot riveting is 650-800MPa, that is, the tensile strength range of the pneumatic core-pulling rivet gun 1 to the mandrel 22 is 650-800MPa, that is, the silicon nitride ceramic round block 221, the silicon nitride ceramic column 223, and the silicon nitride ceramic plug 225 can still maintain good mechanical strength under high temperature conditions, squeeze and deform the hollow rivet sleeve 21, and rivet the two sides of the rivet through hole of the riveted steel on the light steel structure or truss mechanism in the factory building; During the hot riveting process, the differences in thermal expansion and mechanical properties of different materials have a key impact on the riveting effect. In this solution, the core rod 22 of the blind rivet 2 adopts a structure combining silicon nitride ceramics and a steel column 224, which fully considers the high temperature environment during hot riveting. Silicon nitride ceramic blocks 221, silicon nitride ceramic columns 223, silicon nitride ceramic rods 225 and other silicon nitride ceramics can still maintain a tensile strength of about 800-1000MPa at high temperatures up to 1100°C in key parts. This excellent high-temperature performance makes the core rod 22 more stable and reliable when guiding the hollow rivet sleeve 21 to deform. At the same time, the setting of the steel column 224 not only reduces the amount of silicon nitride ceramics used and reduces costs, but also enables the entire core rod 22 to better adapt to thermal stress changes in different temperature ranges, ensuring the connection quality between the blind rivet 2 and the riveted steel during the hot riveting process, and avoiding riveting defects caused by material thermal mismatch.
[0031] In this embodiment, the working process of the factory steel structure riveting installation device is as follows: 1) Installation and positioning One end of the blind rivet 2 is installed in the gun nozzle of the pneumatic blind rivet gun 1.
[0032] The gun nozzle of the pneumatic blind rivet gun 1 is pressed against the round head block 214 at the head end of the hollow rivet sleeve 21, so that the round head block 214 is embedded in the positioning groove 101 on the opening end surface of the gun nozzle to achieve stable positioning.
[0033] 2) Heating The push rod in the micro electric push rod 35 extends out to push the protective cover 31 toward the gun nozzle until the electromagnetic heating coil 32 moves to the left end of the gun nozzle of the pneumatic blind rivet gun 1, and the electromagnetic heating coil 32 is set on the outer periphery of the left end of the blind rivet 2. After receiving the signal from the micro electric push rod 35, the electromagnetic heating controller 34 turns on the circuit of the electromagnetic heating coil 32 to heat the hollow rivet sleeve 21 of the blind rivet 2, and the heating temperature is controlled at 1000-1100℃.
[0034] 3) Riveting Insert the end of the heated hollow rivet sleeve 21 into the rivet through hole, and then start the pneumatic blind rivet gun 1 to apply tension to the blind rivet 2, with a tension strength range of 650-800MPa, so that the core rod 22 is subjected to tension. In this process, the hollow rivet sleeve 21 begins to deform due to heating and force, and the protruding spherical surface 212 and the first annular groove 211 at the end thereof guide the deformation direction. At the same time, the spherical groove 222 on the inner side of the silicon nitride ceramic round block 221 of the core rod 22 also guides the deformation of the head end of the hollow rivet sleeve 21. Finally, the hollow rivet sleeve 21 rivets both sides of the rivet through hole of the riveted steel on the light steel structure or truss mechanism in the factory building; When the tensile strength applied by the blind rivet 2 is greater than 800-1000 MPa, the silicon nitride ceramic column 223 and the steel column 224 of the core rod 22 are broken and separated at the second annular groove 226, completing the riveting operation. The silicon nitride ceramic column 223 remains in the hollow rivet sleeve 21 to support the inner ring of the hollow rivet sleeve 21.
[0035] As can be seen from the above, the riveting principle of the pneumatic blind rivet gun 1 is as follows: the pneumatic blind rivet gun 1 applies a tensile force to the blind rivet 2. Under the action of the tensile force, the core rod 22 is subjected to an outward force. Since the hollow rivet sleeve 21 is heated to a high temperature, the plasticity of the material constituting the hollow rivet sleeve 21 is increased. Under the combined action of the tensile force and the first annular grooves 211, the protruding spherical surface 212 and the spherical groove 222 on the core rod 22, the end of the hollow rivet sleeve 21 gradually deforms, thereby squeezing the two sides of the riveted steel rivet through the hole on the steel structure of the factory building or the truss mechanism to achieve riveting. At the same time, when the tensile force reaches a certain level, the silicon nitride ceramic column 223 and the steel column 224 of the core rod 22 are broken and separated at the designed weak position-the second annular groove 226, completing the entire riveting process.
[0036] As is known to all, the blind rivet 2 in the prior art cannot be directly hot-riveted on the pneumatic blind rivet gun 1 because of the same material inside and outside. It needs to be hammered with a hammer or a pneumatic rivet gun, and the process is cumbersome. The present invention utilizes the existing pneumatic blind rivet gun 1 in combination with an electromagnetic heating coil 32 with rapid heating characteristics, and specially designs a blind rivet 2 composed of silicon nitride ceramic and steel, which cleverly solves this problem. This design makes full use of the advantages of existing tools and avoids the cost of purchasing additional special equipment. At the same time, it greatly simplifies the operation process. The operator does not need to frequently switch between different tools. Only the improved pneumatic blind rivet gun 1 can be used to quickly complete the hot riveting operation, which significantly improves work efficiency and reduces labor intensity.
[0037] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.
Claims
1. A riveting installation device for a factory steel structure, comprising a pneumatic blind rivet gun (1) and a blind rivet (2), wherein the blind rivet (2) is connected and installed in the gun nozzle of the pneumatic blind rivet gun (1), characterized in that: A rivet gun heating kit (3) is installed on the gun head of the pneumatic core-pulling rivet gun (1), and the rivet gun heating kit (3) is mainly composed of an electromagnetic heating coil (32) and an electromagnetic heating controller (34). A connecting cable (33) is connected between the electromagnetic heating coil (32) and the electromagnetic heating controller (34). The inner ring of the electromagnetic heating coil (32) is coaxially telescopically installed on the periphery of the gun head of the pneumatic core-pulling rivet gun (1), and the electromagnetic heating controller (34) is fixedly installed on the top of the pneumatic core-pulling rivet gun (1); The blind rivet (2) comprises a hollow rivet sleeve (21) and a mandrel (22); the head end of the mandrel (22) is coaxially fixedly installed in the hollow rivet sleeve (21); the mandrel (22) is mainly composed of a silicon nitride ceramic column (223) and a steel column (224); the silicon nitride ceramic column (223) is coaxially arranged at the end of the hollow rivet sleeve (21); and the end of the silicon nitride ceramic column (223) and the head end of the steel column (224) are coaxially fixedly connected.
2. A riveting installation device for a factory steel structure according to claim 1, characterized in that: The outer periphery of the electromagnetic heating coil (32) is coaxially fixedly connected to a protective sleeve (31), a micro electric push rod (35) is provided on one side of the protective sleeve (31), the outer shell of the micro electric push rod (35) is fixedly connected to the top end of the pneumatic core-pulling rivet gun (1), and the push rod end of the micro electric push rod (35) is fixedly connected to the protective sleeve (31).
3. A riveting installation device for a factory steel structure according to claim 2, characterized in that: Both sides of the micro electric push rod (35) are provided with mutually parallel telescopic guide rods (36), and both ends of the telescopic guide rod (36) are respectively fixedly connected to the top end of the pneumatic core-pulling rivet gun (1) and one side of the protective cover (31).
4. The riveting installation device for a factory steel structure according to claim 1 is characterized in that: A round head block (214) is coaxially fixedly mounted on the head end of the hollow rivet sleeve (21), and mutually communicating round holes (213) are provided in the hollow rivet sleeve (21) and the round head block (214).
5. The riveting installation device for a factory steel structure according to claim 1 is characterized in that: A protruding spherical surface (212) is fixedly connected to the end of the hollow rivet sleeve (21).
6. A riveting installation device for a factory steel structure according to claim 5, characterized in that: A silicon nitride ceramic round block (221) is fixedly mounted on the head end of the silicon nitride ceramic column (223), and a spherical groove (222) that matches the outer wall of the protruding spherical surface (212) is provided on the inner side of the silicon nitride ceramic round block (221).
7. The riveting installation device for a factory steel structure according to claim 1 is characterized in that: The end of the silicon nitride ceramic column (223) is coaxially fixedly connected to a silicon nitride ceramic plug rod (225), and the silicon nitride ceramic plug rod (225) is embedded and installed in the steel column (224).
8. The riveting installation device for a factory steel structure according to claim 7 is characterized in that: A plurality of cylinders (227) are vertically fixedly connected between the silicon nitride ceramic plug rod (225) and the steel column (224).
9. The riveting installation device for a factory steel structure according to claim 1 is characterized by: A plurality of first annular pressing grooves (211) are coaxially arranged on the periphery of the hollow rivet sleeve (21).
10. The riveting installation device for factory steel structure according to claim 1, characterized in that: A second annular pressing groove (226) is coaxially arranged on the outer ring edge of the end of the silicon nitride ceramic column (223).