Full-automatic self-sensing precise assembly device for slender rod

Abstract

The invention provides a full-automatic self-sensing precise assembly device for a slender rod, and belongs to the technical field of nuclear fuel. Comprising a material conveying assembly and a position adjusting assembly, the material conveying assembly is installed at the top of the position adjusting assembly, the material conveying assembly comprises a positioning seat, a plurality of sets of material conveying wheels are evenly arranged on the positioning seat, the material conveying wheels are rotationally connected with the top of the positioning seat, and a film coating and capping device is installed at the tail end of the top of the positioning seat. According to the fuel rod conveying device, the pushing assembly is arranged, the spring pressing wheel assembly is matched with the conveying wheel, a plurality of fuel rods are clamped and conveyed, batch conveying of the fuel rods is achieved, and a traditional single rod pushing mode is replaced; according to the fuel rod pushing device, secondary repairing can be conducted on areas with incomplete coatings and uneven thicknesses in the film coating operation, the working procedure is greatly simplified, consumed time is shortened, and the problems that an existing rod pushing device is low in efficiency, and the sealing performance and the service life of a fuel rod are affected are solved.

Description

Technical Field

[0001] This invention relates to the field of nuclear fuel technology, and in particular to a fully automated, self-sensing precision assembly device for slender rods. Background Technology

[0002] As a core component of a nuclear reactor, the assembly precision and efficiency of nuclear fuel rods directly affect reactor operational safety and energy supply efficiency. Traditional nuclear fuel assembly often adopts a single-rod pusher mode. When faced with the need for array assembly such as 15×15 and 17×17, the process is cumbersome, time-consuming, and inefficient, making it difficult to meet the needs of large-scale production.

[0003] Meanwhile, fuel rods are slender rod-type precision components, and traditional devices lack effective self-sensing and adaptive adjustment mechanisms. For example, during the pushing process, uneven clamping force can easily cause fuel rod bending and surface damage, thus affecting the assembly accuracy of the components. At the same time, due to the lack of real-time tension monitoring and abnormal feedback functions, it is impossible to avoid problems such as jamming and thrust overload in time, which poses safety hazards. Furthermore, during the coating process, incomplete coating and uneven thickness are prone to occur, making it difficult to accurately locate defective areas and carry out secondary repairs, which affects the sealing performance and service life of the fuel rods.

[0004] Therefore, this application provides a fully automated self-sensing precision assembly device for slender rods to meet the requirements. Summary of the Invention

[0005] The technical problem to be solved by this invention is to provide a fully automatic self-sensing precision assembly device for slender rods. By setting up a pushing component, the spring pressure roller component cooperates with the conveying roller to clamp and transport multiple fuel rods, realizing batch delivery of fuel rods and replacing the traditional single-rod pushing mode. At the same time, the combination of a laser rangefinder and a distance groove can perform secondary repair on areas with incomplete coatings or uneven thickness during the coating process, greatly simplifying the process and shortening the time, so as to solve the problems of low efficiency of existing rod pushing devices and the impact on the sealing performance and service life of fuel rods.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A fully automatic self-sensing precision assembly device for slender rods includes a material conveying component and an adjusting component. The material conveying component is installed on top of the adjusting component and includes a positioning seat. Multiple sets of material conveying wheels are evenly arranged on the positioning seat and are rotatably connected to the top of the positioning seat. A coating and capping device is installed at the top end of the positioning seat, which can perform coating and capping operations on fuel rods. A truss is fixedly installed at the four corners of the top of the positioning seat. A top plate is fixedly installed on the inner wall of the top of the truss. A reduction motor is fixedly installed at the bottom of the top plate. A first spiral lifting component is installed on both sides of the bottom of the top plate. A connecting shaft is fixedly installed between the first spiral lifting component and the reduction motor. The connecting shaft can drive the first spiral lifting component. A hanger is provided at the bottom of the top plate. The output ends of the two sets of first spiral lifting components are fixedly connected to the hanger. A guide shaft is fixedly installed at the four corners of the top of the hanger and slides through the top plate. A pushing component is installed at the bottom of the hanger.

[0007] Optionally, the pushing assembly includes a top seat, the top of which is fixedly connected to the hanger. A center seat is fixedly installed on the middle of both sides of the bottom of the top seat, and a side seat is fixedly installed at each of the four corners of the bottom of the top seat. A drive shaft is rotatably connected between the side wall of the side seat and the corresponding side wall of the center seat. A second geared motor is fixedly installed on both sides of the bottom front end of the top seat, and the output end of the second geared motor is fixedly connected to the corresponding drive shaft. A conveyor belt is installed between the two sets of drive shafts. Multiple sets of spring pressure roller assemblies are evenly installed on the belt of the conveyor belt.

[0008] Optionally, the spring pressure roller assembly includes a wheel seat, which is fixedly connected to a belt with a conveying device. A limiting sleeve is fixedly installed on the top of the wheel seat, and a sliding shell is provided on the top of the wheel seat. A limiting sleeve is fixedly installed on the bottom of the sliding shell, and the limiting sleeve cooperates with the limiting sleeve. Inner slides are provided on both inner walls of the sliding shell. Inserts are fixedly installed on both sides of the top of the wheel seat, and the inserts cooperate with the inner slides. A spring is sleeved on the outer wall of the insert. The two ends of the spring are fixedly connected to the inner wall of the sliding shell and the top of the wheel seat, respectively. A pressure roller is rotatably connected to the top of the sliding shell, and the pressure roller can cooperate with the conveying roller.

[0009] Optionally, guide rails are fixedly installed on both sides of the bottom of the top seat, and a support seat is slidably connected on the guide rail. The inner wall of the support seat is provided with a tape slot, and the tape slot is fixedly connected to the corresponding belt with a conveyor device. A distance slot is provided on the side wall of the support seat, and a laser rangefinder is fixedly installed on the side wall of the support seat. The laser rangefinder is used in conjunction with the corresponding distance slot.

[0010] Optionally, a support plate is fixedly installed on the top of the support base, an adjustment plate is slidably connected to the support plate, a tension sensor is fixedly installed on the adjustment plate, and the tension sensor is used in conjunction with the end wall of the corresponding fuel rod. A cylinder is fixedly installed on the support plate, and the output end of the cylinder is fixedly connected to the end wall of the adjustment plate.

[0011] Optionally, the positioning assembly includes a frame, a geared motor four is fixedly mounted on the outer wall of the frame, a connecting shaft two is fixedly mounted on the output end of the geared motor four, the connecting shaft two is provided in two sets, a commutator is fixedly mounted on both ends of the outer wall of the frame, the outer end walls of the two sets of connecting shaft two are respectively fixedly connected to the corresponding input end of the commutator, a reciprocating screw is rotatably connected to both sides of the top of the frame, the end wall of the reciprocating screw is fixedly connected to the corresponding output end of the commutator, a lead screw seat is engaged on the reciprocating screw, a slide rail is fixedly mounted on both sides of the top of the frame, the same assembly frame is slidably mounted on the two sets of slide rails, and the top of the two sets of lead screw seats is fixedly connected to the assembly frame.

[0012] Optionally, a reduction motor three is fixedly installed on the side wall of the assembly frame, and a connecting shaft three is fixedly installed at the output end of the reduction motor three. There are two sets of connecting shaft three. A second spiral lifting assembly is installed on both sides of the top of the assembly frame. The two sets of connecting shaft three are respectively connected to the corresponding second spiral lifting assembly, and the connecting shaft three can drive the second spiral lifting assembly. The output ends of the two sets of second spiral lifting assemblies are fixedly connected to the bottom of the positioning seat. A positioning cap is fixedly installed on both sides of the top of the assembly frame. A guide shaft two is slidably installed on the inner wall of the positioning cap, and the top of the guide shaft two is fixedly connected to the positioning seat.

[0013] Compared with the prior art, the present invention has at least the following beneficial effects:

[0014] In the above scheme, by setting up a pusher assembly, the spring pressure roller assembly cooperates with the conveying roller to clamp and transport multiple fuel rods, realizing the batch delivery of fuel rods, replacing the traditional single pusher mode. It can efficiently adapt to the assembly requirements of array nuclear fuel assemblies such as 15×15 and 17×17, greatly simplifying the process, shortening the time consumption, and meeting the efficiency requirements of large-scale production.

[0015] By setting up a spring pressure roller assembly, the clamping force can be adaptively adjusted using spring buffering, avoiding bending and surface damage of fuel rods due to uneven clamping force. At the same time, the tension sensor monitors the push rod tension in real time, and the laser rangefinder ensures synchronous movement of the support base, which can promptly avoid abnormalities such as jamming and thrust overload, eliminate safety hazards, and improve assembly accuracy.

[0016] By combining a laser rangefinder with a fixed-distance slot, the coating and capping operations on fuel rods can be completed simultaneously via a coating and capping device at the end of the positioning seat. Combined with the reversing function of the conveyor belt, areas with incomplete coatings can be accurately located based on feedback from the laser rangefinder, enabling secondary repair, ensuring a complete and uniform coating, enhancing the sealing performance of fuel rods, and extending their service life. Attached Figure Description

[0017] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0018] Figure 1 A three-dimensional structural diagram of a fully automatic self-sensing precision assembly device for slender rods; Figure 2 This is a schematic diagram of the assembly of the material conveying component and the adjustment component; Figure 3 This is a plan view of the material conveying assembly; Figure 4 This is a breakdown diagram of the material conveying assembly; Figure 5 This is a schematic diagram illustrating the motion principle of the hanger. Figure 6 This is a schematic diagram of the material feeding assembly; Figure 7 This is a schematic diagram of the assembly of two sets of guide rails on the top seat; Figure 8 This is an assembly diagram of the components on the top mount; Figure 9 This is a schematic diagram of the assembly of the conveyor and the drive shaft; Figure 10 This is a schematic diagram of the spring pressure roller assembly; Figure 11 This is an exploded view of the spring pressure roller assembly; Figure 12 This is a schematic diagram of the assembly of various components on the guide rail; Figure 13 This diagram shows the installation positions of the distance-fixing slot and the laser rangefinder on the support base. Figure 14 This is an assembly diagram of the components on the support plate; Figure 15 This is a schematic diagram of the positioning component; Figure 16 A plan view of the positioning component; Figure 17 This is a breakdown diagram of the positioning component; Figure 18 This is an assembly diagram of the various components on the frame.

[0019] Figure label: Material conveying assembly 100, positioning seat 110, material conveying wheel 111, truss 112, top plate 113, geared motor 114, connecting shaft 115, first spiral lifting assembly 116, hanger 117, guide shaft 118, pushing assembly 120, top seat 121, middle seat 122, side seat 123, drive shaft 124, geared motor 2 125, conveying device 126, spring pressure wheel assembly 130, wheel seat 131, limiting sleeve 132, sliding shell 133, limiting sleeve 134, inner slide 135, insert column 136, spring 137, pressure wheel 138. Guide rail 140. Support base 141. Casing slot 142. Distance slot 143. Laser rangefinder 144. Support plate 150. Cylinder 151. Adjusting plate 152. Tension sensor 153. Coating capping device 160. Positioning assembly 200. Frame 210. Gear motor four 211. Connecting shaft two 212. Commutator 213. Reciprocating screw 214. Screw nut 215. Slide rail 216. Assembly frame 220. Gear motor three 221. Connecting shaft three 222. Second spiral lifting assembly 223. Positioning cap 224. Guide shaft two 225.

[0020] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0021] The fully automatic self-sensing precision assembly device for slender rods provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0022] like Figures 1 to 18As shown, an embodiment of the present invention provides a fully automatic self-sensing precision assembly device for slender rods, including a material conveying component 100 and an adjusting component 200. The material conveying component 100 is installed on the top of the adjusting component 200. The material conveying component 100 includes a positioning seat 110, on which multiple sets of material conveying wheels 111 are evenly arranged, and the material conveying wheels 111 are rotatably connected to the top of the positioning seat 110. A coating and capping device 160 is installed at the top end of the positioning seat 110, which can perform coating and capping operations on fuel rods. A truss 112 is fixedly installed at the four corners of the top of the positioning seat 110. A top plate 113 is fixedly installed on the inner wall of the top of the truss 112. A geared motor 114 is fixedly installed at the bottom of the top plate 113. A first spiral lifting component 116 is installed on both sides of the bottom of the top plate 113. A connecting device is fixedly installed between the first spiral lifting component 116 and the geared motor 114. Shaft 115 drives the first spiral lifting assembly 116. A hanger 117 is provided at the bottom of the top plate 113. The output ends of the two sets of first spiral lifting assemblies 116 are fixedly connected to the hanger 117. Guide shafts 118 are fixedly installed at the four corners of the top of the hanger 117, and the guide shafts 118 slide through the top plate 113. A pusher assembly 120 is installed at the bottom of the hanger 117. In this invention, fuel rods are fed onto the conveying wheel 111 of the positioning seat 110 by an external feeding device. The reduction motor 114 drives the two sets of connecting shafts 115 to rotate, forcing the first spiral lifting assembly 116 to work. Under the limiting and guiding action of the two sets of guide shafts 118, the hanger 117 and the top seat 121 are pressed down, so that the spring pressure wheel assembly 130 on the conveying device 126 cooperates with the conveying wheel 111 to clamp the fuel rods.

[0023] As one implementation method in this embodiment, such as Figure 4 , Figures 6 to 9As shown, the feeding assembly 120 includes a top seat 121, the top of which is fixedly connected to the hanger 117. A center seat 122 is fixedly installed on the center of both sides of the bottom of the top seat 121. Side seats 123 are fixedly installed at the four corners of the bottom of the top seat 121. A drive shaft 124 is rotatably connected between the side wall of the side seat 123 and the corresponding side wall of the center seat 122. A second geared motor 125 is fixedly installed on both sides of the bottom front end of the top seat 121, and the output end of the second geared motor 125 is fixedly connected to the corresponding drive shaft 124. A conveyor belt 126 is installed between the two opposing drive shafts 124. Multiple sets of spring pressure roller assemblies 130 are evenly installed on the belt of the conveyor belt 126. In this invention, the second geared motor 125 is driven so that its output shaft drives the drive shaft 124 to rotate. The conveyor belt 126 is driven to work. At this time, the conveyor belt on the conveyor belt 126 can drive the support 141 to move on the guide rail 140. Since the laser rangefinder 144 can measure in the fixed distance groove 143, it can ensure that the two sets of support 141 move synchronously. At the same time, the tension sensor 153 on the support 141 can push the fuel rod to move on the feed wheel 111 so that it passes through the coating and capping device 160 and is coated and capped for subsequent assembly. In particular, when the external feeding device is required to feed, the hanger 117 moves up to leave the feeding space. When pushing, the hanger 117 moves down so that the pressure roller 138 presses on the upper surface of the fuel rod. After the feeding starts, the fuel rod is pushed to the coating and capping assembly for coating and capping operations.

[0024] In this embodiment, as Figure 3 , Figure 10 and Figure 11As shown, the spring pressure roller assembly 130 includes a wheel seat 131, which is fixedly connected to the belt of the conveyor device 126. A limit sleeve 132 is fixedly installed on the top of the wheel seat 131, and a sliding shell 133 is provided on the top of the wheel seat 131. A limit sleeve 134 is fixedly installed on the bottom of the sliding shell 133, and the limit sleeve 134 cooperates with the limit sleeve 132. The limit sleeve 134 can move within the limit sleeve 132, and the limit sleeve 132 can simultaneously control the limit sleeve 132. 34. Limiting the sliding shell 133 to prevent it from detaching from the wheel seat 131. Inner slides 135 are provided on both inner walls of the sliding shell 133. Insert pins 136 are fixedly installed on both sides of the top of the wheel seat 131, and the insert pins 136 cooperate with the inner slides 135. Springs 137 are sleeved on the outer walls of the insert pins 136. The two ends of the springs 137 are fixedly connected to the inner wall of the sliding shell 133 and the top of the wheel seat 131, respectively. A pressure roller 138 is rotatably connected to the top of the sliding shell 133. 38 can be used in conjunction with the feed roller 111. In this invention, when the spring pressure roller assembly 130 presses down on the fuel rod, the pressure roller 138 can cooperate with the feed roller 111 to clamp the fuel rod and prevent it from coming off during the pushing process. During this process, the pressure roller 138 is forced to move the sliding shell 133 closer to the wheel seat 131, causing the spring 137 inside the sliding shell 133 to contract under force. Under the action of the spring 137's rebound force, the pressure roller 138 is forced to press the fuel rod. In particular, the spring pressure roller assembly 130 is installed on the belt with the conveyor device 126. When pushing the rod, it descends through the first spiral lifting assembly 116, and the pressure roller 138 presses on the upper surface of the fuel rod. The spring 137 can provide distance buffering. It cooperates with the feed roller 111 installed on the positioning seat 110, and is inverted with the spring pressure roller assembly 130 to ensure the rigidity of the timing belt and prevent the timing belt from bending when the spring pressure roller assembly 130 presses down on the fuel rod.

[0025] As one implementation method in this embodiment, such as Figure 7 , Figures 12 to 14As shown, guide rails 140 are fixedly installed on both sides of the bottom of the top seat 121. A support seat 141 is slidably connected to the guide rails 140. The guide rails 140 support and limit the support seat 141. A belt-clamping groove 142 is formed on the inner wall of the support seat 141, and the belt-clamping groove 142 is fixedly connected to the belt of the corresponding belt conveyor 126. When the belt of the belt conveyor 126 moves, it can drive the support seat 141 to move through the belt-clamping groove 142. A distance-fixing groove 143 is formed on the side wall of the support seat 141. A laser rangefinder 144 is fixedly installed and used in conjunction with a corresponding distance-fixing slot 143. The distance-fixing slot 143 has a scale, and the distance the laser rangefinder 144 moves within the distance-fixing slot 143 can be displayed by the change of the scale. Simultaneously, in the initial position (when both sets of support bases 141 are aligned), the scale of the laser rangefinder 144 within the distance-fixing slot 143 is zero. A support plate 150 is fixedly installed on the top of the support base 141, and an adjusting plate 152 is slidably connected to the support plate 150. A [missing information - likely a device or component] is fixedly installed on the adjusting plate 152. A tension sensor 153 is used in conjunction with the corresponding fuel rod end wall. During operation, the tension sensor 153 is connected to the fuel rod end wall, allowing it to push or pull the fuel rod. During the pushing process, the tension sensor 153 can display the tension in real time, monitoring any abnormalities in the pushing rod and ensuring its safety and reliability. When the tension sensor 153 displays an abnormality, the drive cylinder 151 moves the adjusting plate 152, thereby allowing for secondary adjustment of the pushing rod pressure. The support plate 150 is fixed... A cylinder 151 is installed, and the output end of the cylinder 151 is fixedly connected to the end wall of the adjusting plate 152. In this invention, if the fuel rod is partially uncoated or incompletely coated due to its specifications or surface material, the belt conveyor 126 is reversed by driving the reduction motor 125 connected to the fuel rod, and the laser rangefinder 144 moves in the distance groove 143 at the same distance as the length of the incomplete coating. After that, the belt conveyor 126 is driven to rotate forward again, and the fuel rod can be recoated to improve the processing accuracy.

[0026] As one implementation method in this embodiment, such as Figures 15 to 18As shown, the adjustment assembly 200 includes a frame 210. A geared motor 211 is fixedly mounted on the outer wall of the frame 210. A connecting shaft 212 is fixedly mounted on the output end of the geared motor 211. There are two sets of connecting shafts 212. A commutator 213 is fixedly mounted on both ends of the outer wall of the frame 210. The commutator 213 can convert the rotation of the connecting shaft 212 into the rotation of the reciprocating screw 214. It can be composed of two sets of meshing helical gears. The outer end walls of the two sets of connecting shafts 212 are respectively fixedly connected to the input ends of the corresponding commutator 213. Reciprocating screws 214 are rotatably connected to both sides of the top of the frame 210. The end wall is fixedly connected to the output end of the corresponding commutator 213. A lead screw nut 215 is engaged on the reciprocating screw 214. Slide rails 216 are fixedly installed on both sides of the top of the frame 210. The same assembly frame 220 is slidably installed on the two sets of slide rails 216, and the tops of the two sets of lead screw nuts 215 are fixedly connected to the assembly frame 220. In this invention, the drive reduction motor 211 drives the two sets of connecting shafts 212 to rotate. Under the action of the commutator 213, the two sets of reciprocating screws 214 move. Under the limiting action of the slide rails 216, the lead screw nuts 215 drive the assembly frame 220 to change in lateral position.

[0027] In this embodiment, as Figures 15 to 17 As shown, a geared motor 221 is fixedly installed on the side wall of the assembly frame 220. A connecting shaft 222 is fixedly installed at the output end of the geared motor 221. There are two sets of connecting shafts 222. Second spiral lifting components 223 are installed on both sides of the top of the assembly frame 220. The two sets of connecting shafts 222 are respectively connected to the corresponding second spiral lifting components 223, and the connecting shafts 222 can drive the second spiral lifting components 223. The spiral lifting components can be composed of worm gears and can only be driven by the connecting shafts. They also have a self-locking function. The output ends of the two sets of second spiral lifting components 223 are fixed to the bottom of the positioning seat 110. The assembly frame 220 is connected and has positioning caps 224 fixedly installed on both sides of the top. The inner wall of the positioning cap 224 is slidably installed with a guide shaft 225, and the top of the guide shaft 225 is fixedly connected to the positioning seat 110. The guide shaft 225 has a guiding function to ensure the stable movement of the positioning seat 110. In this invention, the drive reduction motor 221 drives the two sets of connecting shafts 222 to rotate, thereby making the second spiral lifting assembly 223 work. Under the limiting action of the positioning caps 224 and the guide shaft 225, the material conveying assembly 100 is lifted or lowered, so that the longitudinal position of the material conveying assembly 100 changes.

[0028] The working principle of the technical solution provided by this invention is as follows: Fuel rods are fed onto the conveyor wheel 111 of the positioning seat 110 via an external feeding device. A drive reduction motor 114 rotates two sets of connecting shafts 115, forcing the first spiral lifting assembly 116 to operate. Under the limiting and guiding action of two sets of guide shafts 118, the hanger 117 and top seat 121 are pressed down, causing the spring pressure roller assembly 130 on the conveyor device 126 to cooperate with the conveyor wheel 111 to clamp the fuel rods. The assembly position of the fuel rods is driven as needed. The geared motor 211 drives the two sets of connecting shafts 212 to rotate. Under the action of the commutator 213, the two sets of reciprocating screws 214 move. Under the limiting action of the slide rail 216, the screw nut 215 drives the assembly frame 220 to change its lateral position. Then, the geared motor 221 drives the two sets of connecting shafts 222 to rotate, thereby making the second spiral lifting assembly 223 work. Under the limiting action of the positioning cap 224 and the guide shaft 225, the material conveying assembly 100 is lifted or lowered, so that the material conveying assembly 100 moves longitudinally. The position changes, aligning the output end of the coating capping device 160 with the external assembly device; subsequently, the drive motor 125 drives its output shaft to rotate the drive shaft 124, thus driving the belt conveyor 126 to work. At this time, the conveyor belt on the belt conveyor 126 can drive the support base 141 to move on the guide rail 140. Since the laser rangefinder 144 can measure within the fixed distance groove 143, it can ensure that the two sets of support bases 141 move synchronously. At the same time, the tension sensor 153 on the support base 141 can push the fuel rod on the feed roller 1. The fuel rod is moved through the coating and capping device 160 and coated and capped for subsequent assembly. If, during the coating and capping process, a fuel rod is partially uncoated or incompletely coated due to its specifications or surface material, the belt conveyor 126 is reversed by driving the geared motor 125 connected to the fuel rod. The laser rangefinder 144 moves the same distance within the distance slot 143 as the length of the incomplete coating. Afterward, the belt conveyor 126 is driven to rotate forward again, and the fuel rod can be recoated, improving processing accuracy.

[0029] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0030] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A fully automatic self-sensing precision assembly device for slender rods, comprising a material conveying assembly (100) and a positioning assembly (200), wherein the material conveying assembly (100) is mounted on top of the positioning assembly (200), characterized in that, The feeding assembly (100) includes a positioning seat (110), on which multiple sets of feeding wheels (111) are evenly arranged, and the feeding wheels (111) are rotatably connected to the top of the positioning seat (110). A coating and capping device (160) is installed at the top end of the positioning seat (110), which can perform coating and capping operations on the fuel rods. A truss (112) is fixedly installed at the four corners of the top of the positioning seat (110). A top plate (113) is fixedly installed on the inner wall of the top of the truss (112). A geared motor (114) is fixedly installed at the bottom of the top plate (113). Both sides are equipped with a first spiral lifting assembly (116). A connecting shaft (115) is fixedly installed between the first spiral lifting assembly (116) and the first geared motor (114). The connecting shaft (115) can drive the first spiral lifting assembly (116). A hanger (117) is provided at the bottom of the top plate (113). The output ends of the two sets of first spiral lifting assemblies (116) are fixedly connected to the hanger (117). A guide shaft (118) is fixedly installed at the four corners of the top of the hanger (117), and the guide shaft (118) slides through the top plate (113). A pusher assembly (120) is installed at the bottom of the hanger (117).

2. The fully automatic self-sensing precision assembly device for slender rods according to claim 1, characterized in that, The pushing assembly (120) includes a top seat (121), the top of which is fixedly connected to the hanger (117). A middle seat (122) is fixedly installed on the middle of both sides of the bottom of the top seat (121). A side seat (123) is fixedly installed at each of the four corners of the bottom of the top seat (121). A drive shaft (124) is rotatably connected between the side wall of the side seat (123) and the side wall of the corresponding middle seat (122). A second gear motor (125) is fixedly installed on both sides of the bottom front end of the top seat (121), and the output end of the second gear motor (125) is fixedly connected to the corresponding drive shaft (124). A belt conveyor (126) is installed between the two sets of drive shafts (124). Multiple sets of spring pressure roller assemblies (130) are evenly installed on the belt of the belt conveyor (126).

3. The fully automatic self-sensing precision assembly device for slender rods according to claim 2, characterized in that, The spring pressure roller assembly (130) includes a wheel seat (131), which is fixedly connected to the belt of the conveyor device (126). A limiting sleeve (132) is fixedly installed on the top of the wheel seat (131), and a sliding shell (133) is provided on the top of the wheel seat (131). A limiting sleeve (134) is fixedly installed on the bottom of the sliding shell (133), and the limiting sleeve (134) cooperates with the limiting sleeve (132). Both sides of the inner wall of the sliding shell (133) are provided with openings. The inner slide (135) has two fixedly installed pins (136) on the top of the wheel seat (131), and the pins (136) are used in conjunction with the inner slide (135). The outer wall of the pins (136) is fitted with a spring (137), and the two ends of the spring (137) are fixedly connected to the inner wall of the sliding shell (133) and the top of the wheel seat (131) respectively. The top of the sliding shell (133) is rotatably connected with a pressure roller (138), and the pressure roller (138) can be used in conjunction with the conveying roller (111).

4. The fully automatic self-sensing precision assembly device for slender rods according to claim 2, characterized in that, The top seat (121) has guide rails (140) fixedly installed on both sides of its bottom. A support seat (141) is slidably connected to the guide rails (140). The inner wall of the support seat (141) is provided with a tape groove (142), and the tape groove (142) is fixedly connected to the belt of the corresponding belt conveyor (126). The side wall of the support seat (141) is provided with a distance groove (143), and a laser rangefinder (144) is fixedly installed on the side wall of the support seat (141). The laser rangefinder (144) is used in conjunction with the corresponding distance groove (143).

5. The fully automatic self-sensing precision assembly device for slender rods according to claim 4, characterized in that, A support plate (150) is fixedly installed on the top of the support base (141). An adjusting plate (152) is slidably connected on the support plate (150). A tension sensor (153) is fixedly installed on the adjusting plate (152), and the tension sensor (153) is used in conjunction with the end wall of the corresponding fuel rod. A cylinder (151) is fixedly installed on the support plate (150), and the output end of the cylinder (151) is fixedly connected to the end wall of the adjusting plate (152).

6. The fully automatic self-sensing precision assembly device for slender rods according to claim 1, characterized in that, The adjustment assembly (200) includes a frame (210). A geared motor four (211) is fixedly installed on the outer wall of the frame (210). A connecting shaft two (212) is fixedly installed at the output end of the geared motor four (211). There are two sets of connecting shaft two (212). A commutator (213) is fixedly installed at both ends of the outer wall of the frame (210). The outer end walls of the two sets of connecting shaft two (212) are respectively fixedly connected to the input end of the corresponding commutator (213). 210) Both sides of the top are rotatably connected to a reciprocating screw (214). The end wall of the reciprocating screw (214) is fixedly connected to the output end of the corresponding commutator (213). A screw nut (215) is engaged on the reciprocating screw (214). Slide rails (216) are fixedly installed on both sides of the top of the frame (210). The same assembly frame (220) is slidably installed on the two sets of slide rails (216), and the tops of the two sets of screw nuts (215) are fixedly connected to the assembly frame (220).

7. The fully automatic self-sensing precision assembly device for slender rods according to claim 6, characterized in that, The assembly frame (220) is fixedly mounted with a geared motor three (221) on its side wall. The output end of the geared motor three (221) is fixedly mounted with a connecting shaft three (222). There are two sets of connecting shaft three (222). The top two sides of the assembly frame (220) are each equipped with a second spiral lifting assembly (223). The two sets of connecting shaft three (222) are respectively connected to the corresponding second spiral lifting assembly (223), and the connecting shaft three (222) can drive the second spiral lifting assembly (223). The output ends of the two sets of second spiral lifting assemblies (223) are fixedly connected to the bottom of the positioning seat (110). The top two sides of the assembly frame (220) are fixedly mounted with positioning caps (224). The inner wall of the positioning cap (224) is slidably mounted with a guide shaft two (225), and the top of the guide shaft two (225) is fixedly connected to the positioning seat (110).

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