Automatic nut tightening device for reactor

Abstract

The present invention discloses an automatic nut loosening and tightening device for a reactor, comprising: a nut loosening member and a first driving mechanism capable of remote control, wherein the number of the nut loosening members is the same as the number of nuts on the reactor cover, and each of the nut loosening members is matched and connected with the nut one by one; the first driving mechanism drives one of the nut loosening members to rotate, thereby realizing the loosening and tightening of the nut. The multiple nut loosening members of the present invention act on multiple nuts respectively, and multiple nut loosening members are driven to rotate by multiple first driving mechanisms, thereby realizing automatic assembly of the nuts, effectively avoiding the complexity of manual disassembly and assembly, and the skill required in the operation process; at the same time, the automatic assembly ensures that the forces at each position where the reactor cover is fastened are uniform, thereby ensuring the sealing of the reactor cover.

Description

Technical Field

[0001] The invention relates to an automatic nut loosening device, in particular to a nut loosening device for a reactor used for stress corrosion testing. Background Art

[0002] The experimental kettle is generally composed of a kettle body and a kettle cover. It is particularly cumbersome to manually disassemble or tighten the fastening nuts of the kettle body and the kettle cover. The experimental kettle generally has strict requirements on sealing. When tightening the kettle cover nuts, the surrounding nuts must be evenly stressed. Pay special attention to tightening the nuts at the diagonals at the same time to ensure sealing. In addition, in some experiments, the sample itself has a certain amount of radiation, which makes it impossible for operators to operate at close range.

[0003] Stress corrosion test equipment is generally used for testing materials in corrosive media environments, while high-temperature autoclaves are a simulation of the actual use environment. At present, high-temperature autoclaves generally use the connection method between the autoclave body and the autoclave cover through screw threads or bolts and nuts, and the autoclave body and the autoclave cover are sealed by hard sealing. In this case, the autoclave cover and the surrounding connection of the autoclave body are required to be uniformly stressed. In the process of frequent disassembly and assembly of the autoclave cover, the cumbersome manual operation is highlighted, and the skills in the actual tightening of the bolts are also required. At present, most test equipment manufacturers basically use manual torque wrenches to manually disassemble the autoclave cover. For many experiments with radiation operating environments, there is currently no remote operation solution. Summary of the invention

[0004] The invention provides a nut automatic tightening device for a reactor, which can solve the above defects in the prior art.

[0005] The technical solution of the present invention is as follows:

[0006] A nut automatic tightening device for a reactor, comprising: a nut tightening member and a first driving mechanism capable of remote control,

[0007] The number of the nut loosening members is the same as the number of nuts on the reactor cover, and each of the nut loosening members is matched and connected with the nut one by one; the first driving mechanism drives one of the nut loosening members to rotate, thereby achieving the loosening or tightening of the nut.

[0008] Each nut tensioner acts on a nut of the reactor cover respectively, and the nut tensioners are driven to rotate by a plurality of first driving mechanisms, thereby realizing automatic assembly of the nuts, effectively avoiding the complexity of manual disassembly and assembly and the skill required in the operation process; at the same time, by setting the torque of each first driving mechanism to be equal, the automatic assembly ensures that the force at each position of the reactor cover is uniform, thereby ensuring the sealing of the reactor cover.

[0009] Preferably, the first driving mechanism comprises an automatic torque wrench and an operating box, the operating box is electrically connected to the automatic torque wrench, and the operating box comprises an operating button for controlling the rotation of the automatic torque wrench. The torque wrench can be remotely controlled by the operating box, ensuring the convenience and safety of the operator's operation. By calibrating each automatic torque wrench, the torque of each automatic torque wrench is equal, ensuring that each fastening position of the kettle cover is evenly stressed, thereby ensuring the sealing of the kettle cover.

[0010] Due to the limitation of the equipment space size, the spacing between the bolts of the kettle cover and the size of the first driving mechanism, it is difficult to keep the number of the first driving mechanism and the number of nut tensioners consistent. Preferably, the number of the nut tensioners is an integer multiple of the number of the first driving mechanisms; it also includes a driving mechanism fixing part, each of the first driving mechanisms is connected to the driving mechanism fixing part, and includes a second driving mechanism for driving the driving mechanism fixing part to rotate. The multiple nuts are loosened and tightened in two times. After the multiple first driving mechanisms complete the action on the nuts once, the second driving mechanism drives the driving mechanism fixing part to rotate and the workstation is changed. The multiple first driving mechanisms continue to complete the matching connection with the remaining nut tensioners to achieve the loosening and tightening of the remaining nuts. Such a setting can quickly and efficiently realize the disassembly and tightening of the nuts while meeting the requirements of the equipment size.

[0011] Preferably, the second driving mechanism is a stepper motor, and the output end of the stepper motor is connected to a reducer; the output end of the second driving mechanism is provided with a connecting rod, and the end of the connecting rod is provided with a rolling body, and the rolling body is rotatably connected to the connecting rod through a rotating shaft. The fixed part of the driving mechanism is arranged above the nut loosening member, and the fixed part of the driving mechanism is provided with a rolling body accommodating groove in the direction close to the nut loosening member, and the rolling body is arranged in the rolling body accommodating groove, and the rolling body is preferably a roller, and the roller is embedded in the rolling body accommodating groove; the rolling body abuts against the upper end of the rolling body accommodating groove, and the width of the rolling body accommodating groove is greater than the width of the rolling body. The upper end of the rolling body accommodating groove refers to the end close to the fixed part of the driving mechanism in the axial direction, the width of the rolling body accommodating groove refers to the width perpendicular to the axial direction of the fixed part of the driving mechanism, and the width of the rolling body refers to the width perpendicular to the axial direction of the fixed part of the driving mechanism. The rotation of the stepper motor drives the connecting rod to rotate, and the rolling body drives the fixed part of the driving mechanism to rotate and perform a combined up-and-down movement. The slot width of the rolling body accommodating groove is larger than the width of the rolling body, so that when the rolling body drives the fixed part of the driving mechanism to rotate, the fixed part of the driving mechanism can be moved upward for a certain distance before performing a rotational movement. In this way, the output end of the first driving mechanism can be smoothly pulled out from the upper end of the nut tensioner, and then rotated to another position, and under the action of its own gravity, it moves downward and connects with the nut tensioner to realize the first driving mechanism switching position. With such a structure, the switching position can be completed by the cooperation of the second driving mechanism, the connecting rod, the rolling body, and the rolling body accommodating groove, and the operation is simple.

[0012] Preferably, it further includes a drive mechanism mounting part and a controller, wherein the second drive mechanism is arranged on the drive mechanism mounting part; the drive mechanism mounting part also includes at least one limit switch for limiting the stroke of the connecting rod, wherein the limit switch is arranged at a predetermined position of the drive mechanism mounting part, and each of the limit switch and the second drive mechanism is electrically connected to the controller respectively. When the drive mechanism fixing part rotates and changes the working position, the second drive mechanism drives the connecting rod to rotate until it touches the contact of the limit switch, and the limit switch sends an electrical signal to the controller, and the controller controls the second drive mechanism to stop rotating according to the received electrical signal, thereby fixing the drive mechanism fixing part at a predetermined position. Precise control can be achieved, ensuring the accuracy of the drive mechanism fixing part when changing working positions.

[0013] Preferably, the reaction kettle comprises a kettle body and a kettle cover, the kettle cover is fixed to the kettle body by bolts and nuts, and the drive mechanism mounting part is assembled on the kettle cover. The drive mechanism fixing part and the kettle cover are each provided with a center hole, and the center hole of the drive mechanism fixing part is connected with a linear bearing; it also comprises a positioning rod, the positioning rod is sequentially passed through the linear bearing and the center hole of the kettle cover, the positioning rod is connected to the kettle cover, and the positioning rod is slidably connected with the linear bearing through a sleeve, and the drive mechanism fixing part can move up and down and rotate along the sleeve, thereby ensuring the stability and accuracy of the drive mechanism fixing part in switching positions.

[0014] Preferably, the first driving mechanism includes a body, the body of the first driving mechanism is rotatably connected to the driving mechanism fixing part, and the output end of the first driving mechanism is arranged through the driving mechanism fixing part. When the first driving mechanism is rotatably connected, the body of the first driving mechanism can rotate freely relative to the fixed position, so that when encountering interference objects during the switching of the workstation, it can rotate completely by itself, ensuring that the entire switching process does not require manual intervention.

[0015] Preferably, the driving mechanism fixing part is provided with a plurality of evenly distributed assembly holes, the assembly holes are arranged in a coaxial manner with the nuts of the reactor cover, the body of the first driving mechanism is arranged at one end of the driving mechanism fixing part, and the output end of the first driving mechanism is passed through the assembly holes. The plurality of first driving mechanisms can simultaneously act on the plurality of corresponding evenly distributed nuts on the reactor cover, so that the fastening position of the reactor cover is subjected to even force, thereby improving the sealing performance of the reactor cover.

[0016] Preferably, the nut tensioner includes: a first connection portion for connecting with the nut, the first connection portion includes a nut accommodating space for accommodating the nut, the nut accommodating space is matched and connected with the nut; the height of the nut accommodating space is greater than twice the height of the nut, the nut can move along the height direction of the nut accommodating space, and the nut can move along the height direction of the nut accommodating space, ensuring that the nut can be completely disassembled; a second connection portion for connecting with the output end of the first driving portion, arranged at an end away from the first connection portion, the output end of the first driving portion is matched and connected with the second connection portion. When the first driving mechanism is tightening or disassembling the nut through the nut tensioner, the reaction force received by the first driving mechanism can be shared by other nut tensioners, so that the first driving mechanism and the entire device can be more stable during operation.

[0017] Preferably, it also includes a tensioner fixing part, each of the nut tensioners is connected to the tensioner fixing part; the tensioner fixing part includes a plurality of mounting holes evenly distributed along the circumference, each of the nut tensioners is tightly connected to a mounting hole of the tensioner fixing part through a bearing, the inner ring of the bearing is tightly connected to the nut tensioner, and the outer ring of the bearing is tightly connected to the tensioner fixing part. The bearing is connected to the fastener fixing part, which reduces the friction force on the nut tensioner when it rotates, and ensures that the first drive mechanism, when the torque setting is the same, minimizes the difference between the torques output by the multiple first drive mechanisms tightening the nuts, ensures that the torque of the tightening nuts is equal, and greatly ensures the sealing of the experimental kettle.

[0018] Preferably, two limit switches are provided, which are respectively arranged on both sides of the second driving mechanism, and each limit switch is arranged at a predetermined position of the driving mechanism mounting part; the kettle cover is provided with an assembly groove in the circumference, the driving mechanism mounting part is annular, and the inner edge of the driving mechanism mounting part is provided with a protrusion matching the assembly groove, and the driving mechanism mounting part is assembled to the kettle cover through the cooperation of the protrusion and the assembly groove.

[0019] A second aspect of the present invention provides a reaction kettle provided with the above-mentioned nut tightening device.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] First, in the nut tightening device of the reactor of the present invention, multiple nut tightening members act on multiple nuts respectively, and multiple nut tightening members are driven to rotate by multiple first driving mechanisms, so as to realize automatic assembly of the nuts, effectively avoiding the complexity of manual disassembly and assembly and the skill required in the operation process; at the same time, by setting the torque of each first driving mechanism to be equal, the automatic assembly ensures that the force at each position of the reactor cover is uniform, thereby ensuring the sealing of the reactor cover.

[0022] Second, the number of nut tensioners is the same as the number of nuts on the reactor cover. Due to the limitations of the equipment space size, the bolt spacing on the reactor cover and the size of the first driving mechanism, the number of first driving mechanisms is set to half of the number of nut tensioners. When the first driving mechanism completes the tightening and loosening of a group of nuts, it is only necessary to rotate the fixing part of the driving mechanism, and the first driving mechanism and the remaining nut tensioners are matched and connected to achieve the tightening and loosening of the remaining nuts, so as to quickly and efficiently complete the fixing and disassembly of the reactor nuts.

[0023] Third, through the rotation of the second driving mechanism, the connecting rod and the rolling body drive the fixed part of the driving mechanism to perform a combined rotation and up and down movement, and the rolling body abuts against the upper end of the rolling body accommodating groove. The groove width of the rolling body accommodating groove is larger than the width of the rolling body. In this way, it can be ensured that when the roller drives the fixed part of the driving mechanism to rotate, the fixed part of the driving mechanism can be moved upward for a distance before rotating. In this way, it can be ensured that the output end of the first driving mechanism can be smoothly pulled out from the upper end of the nut loosening member, and then rotated to another position, and under the action of its own gravity, it moves downward to connect with the nut loosening member, thereby realizing the first driving mechanism conversion position, and the operation is simple.

[0024] Fourth, by arranging a limit switch on the drive mechanism mounting part, when the drive mechanism fixing part rotates and changes the working position, the limit switch is used to control the circumferential motion stroke of the drive mechanism fixing part, thereby achieving precise control and ensuring the accuracy of the drive mechanism fixing part when changing the working position.

[0025] Fifth, the fixed part of the driving mechanism of the present invention is slidably connected to the sleeve of the positioning rod through a linear bearing, so that the fixed part of the driving mechanism can move up and down and rotate along the sleeve, ensuring the stability and accuracy of the switching position of the fixed part of the driving mechanism.

[0026] Sixth, the nut tensioner of the present invention is connected to the fastener fixing part through a bearing, which reduces the friction force on the nut tensioner when it rotates, ensures that when the first drive mechanism has the same torque setting, the difference between the torques output by the fastening nuts of multiple first drive mechanisms is minimized, ensures that the torques of the fastening nuts are equal, and greatly ensures the sealing of the experimental kettle.

[0027] Seventh, the height of the nut accommodating space of the present invention is greater than twice the height of the nut, so that the nut can move along the height direction of the nut accommodating space, ensuring that the nut can be completely disassembled.

[0028] Eighth, the first driving mechanism of the present invention includes an automatic torque wrench and an operating box. The automatic torque wrench is remotely controlled by the operating box, thereby controlling the forward and reverse rotation of the automatic torque wrench to achieve disassembly or tightening of the nut without the need for manual operation, thereby ensuring the convenience and safety of the operator's operation.

[0029] Ninth, when the wrench body of the automatic torque wrench of the present invention is rotatably connected to the fixed part of the drive mechanism, the wrench body can rotate freely relative to the fixed position, so that when encountering interference objects during the switching of workstations, it can rotate completely on its own, ensuring that the entire switching process does not require human intervention.

[0030] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the three-dimensional structure of the nut tightening device of the reactor in Example 1 of the present invention;

[0032] Figure 2 It is a partial structural schematic diagram of the nut tightening device of the reactor in Example 1 of the present invention;

[0033] Figure 3 It is another partial structural schematic diagram of the nut tightening device of the reactor in Example 1 of the present invention;

[0034] Figure 4 is a schematic diagram of the three-dimensional structure of the first driving mechanism and the driving mechanism fixing part of Example 1 of the present invention;

[0035] Figure 5 is a schematic diagram of the three-dimensional structure of the second driving mechanism of Example 1 of the present invention;

[0036] Figure 6 It is a schematic diagram of the three-dimensional structure of the bolt and nut tensioner after being assembled according to Embodiment 1 of the present invention;

[0037] Figure 7 is a cross-sectional view of the bolt and nut tensioner after assembly according to Embodiment 1 of the present invention;

[0038] Figure 8 is a front view of the drive mechanism mounting portion of embodiment 1 of the present invention;

[0039] Fig. 9 It is a schematic diagram of the three-dimensional structure of the reactor of Example 1 of the present invention.

[0040] Figure numerals: kettle body 12; kettle cover 14; nut 10; nut tensioner 11; first drive mechanism 7; tensioner fixing part 9; mounting hole 9-1; bearing 15; first connecting part 111; nut accommodating space 110; second connecting part 112; torque head 5; drive mechanism fixing part 8; wrench body 7-1; assembly hole 8-2; connecting rod 1-1; rolling element 3; rotating shaft 3-2; mounting plate 4; rolling element accommodating groove 3-1; drive mechanism mounting part 13; a controller 100; drive mechanism mounting plate 1-2; limit switch 2; center hole 8-1 of drive mechanism fixing part 8; linear bearing 6; positioning rod 17; center hole 9-2 of tensioner fixing part 9; sleeve 16; assembly groove 14-1; protrusion 13-1; bolt 18; stirring rod 19. DETAILED DESCRIPTION

[0041] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of protection of the present invention. Improvements and adjustments made by those skilled in the art in practical applications according to the present invention still belong to the scope of protection of the present invention.

[0042] Example 1

[0043] This embodiment provides an automatic tightening device for nuts of a reactor, which is used to tighten or loosen nuts of a reactor for stress corrosion testing. The reactor comprises a reactor body 12 and a reactor cover 14. The reactor cover 14 is fixed to the reactor body 12 by bolts 18 and nuts 10. The nuts 10 are hexagonal nuts. The reactor structure is as follows: Fig. 9 shown.

[0044] See also Figure 1-8 The nut loosening device comprises: a nut loosening member 11, a first driving mechanism 7, the number of the nut loosening members 11 is set to be multiple, which is equal to the number of nuts on the reactor cover, the nut loosening member 11 is sleeved on the nut 10, and each of the nut loosening members 11 is matched and connected with the nut on the reactor cover 14; it also comprises a loosening member fixing part 9, each of the nut loosening members 11 is connected to the loosening member fixing part 9; there are multiple first driving mechanisms 7, each of which drives a nut loosening member 11 to rotate, thereby realizing the loosening and tightening of the nut 10. Multiple nut loosening members 11 act on multiple nuts 10 respectively, and the nut loosening members 11 are driven to rotate by multiple first driving mechanisms 7, so that the automatic assembly of the nuts 10 can be realized, effectively avoiding the complexity of manual disassembly and assembly and the skill in the operation process; at the same time, by setting the torque of each first driving mechanism 7 to be equal, the automatic assembly ensures that the various positions of the reactor cover 14 are uniformly stressed, and the sealing of the reactor cover 14 is ensured.

[0045] In this embodiment, the tensioner fixing part 9 includes a plurality of mounting holes 9-1 evenly distributed along the circumferential direction, and each of the nut tensioners 11 is tightly connected to a mounting hole 9-1 of the tensioner fixing part 9 through a bearing 15, the inner ring of the bearing 15 is tightly connected to the nut tensioner 11, and the outer ring of the bearing 15 is tightly connected to the tensioner fixing part 9. The bearing 15 is connected to the fastener fixing part 9, which reduces the friction force on the nut tensioner 11 when rotating, and ensures that the first drive mechanism 7, when the torque setting is the same, minimizes the difference between the torques output by the multiple first drive mechanisms 7 tightening the nuts 10, ensures that the torques of the tightening nuts 10 are equal, and greatly ensures the sealing of the experimental kettle.

[0046] Preferably, the nut tightener 11 comprises a first connecting portion 111 for connecting with the nut 10, see Figure 3 , Figure 4 , the first connecting portion 111 includes a nut accommodating space 110 for accommodating the nut 10, and the nut accommodating space 110 is matched and connected with the nut 10, and the matching connection is preferably a snap-on connection. The height of the nut accommodating space 110 is greater than twice the height of the nut 10, so that the nut 10 can move 18 along the height direction of the nut accommodating space, ensuring that the nut 10 can be completely disassembled. In this embodiment, the nut is a commonly used hexagonal nut, so the nut accommodating space 110 is an inner hexagonal accommodating space, which can match the nut 10 to achieve the rotation of the nut. In other alternative embodiments, the nut can also be other existing nuts. The size, model and number of the nuts of the kettle cover 14 are not used to limit the scope of protection of the present invention. It is only necessary to ensure that the nut accommodating space 110 is matched and connected with the nut 10, and no further details are given here.

[0047] In this embodiment, the nut loosening member 11 further includes a second connection portion 112, which is arranged at an end away from the first connection portion 111. The first driving mechanism 7 includes an automatic torque wrench, and the output end of the automatic torque wrench includes a torque head 5. The second connection portion 112 is matched and connected to the torque head 5. When the first driving mechanism 7 rotates, the nut loosening member 11 is driven to rotate, thereby realizing the disassembly or tightening of the nut 10. In this embodiment, when the torque head 5 is matched and connected to the second connection portion 112, the torque head 5, the nut loosening member 11 and the nut 10 are coaxial. The first driving mechanism 7 also includes an operating box, which is electrically connected to the automatic torque wrench 7, and the operating box includes a manipulation button for controlling the rotation of the automatic torque wrench 7. The automatic torque wrench is remotely controlled by the operating box, thereby controlling the forward and reverse rotation of the automatic torque wrench 7, realizing the disassembly or tightening of the nut 10, without manual operation, ensuring the convenience and safety of the operator's operation.

[0048] In this embodiment, 8 nuts are arranged on the reactor cover 14. Due to the limitation of the equipment space size, the bolt spacing of the reactor cover and the size of the first driving mechanism 7, it is difficult to keep the number of the first driving mechanism 7 and the nut loosening and tightening pieces 11 consistent. The number of the first driving mechanism 7 is set to 4, and all are connected to a driving mechanism fixing part 8. After the 4 first driving mechanisms 7 complete the loosening and tightening of a group of nuts (4), it is only necessary to lift and rotate the driving mechanism fixing part 8. After the first driving mechanism 7 is matched and connected with the remaining nut loosening and tightening pieces 11, the remaining nuts 10 can be loosened and tightened, and the fixing and removal of the reactor nuts 10 can be completed quickly and efficiently.

[0049] Preferably, four first driving mechanisms 7 are provided, each of which is connected to the driving mechanism fixing part 8. After completing the tightening and loosening of a group of nuts (4 nuts), the work station can be changed by rotating the driving mechanism fixing part 8, and the four first driving mechanisms 7 continue to complete the tightening and loosening of the remaining nuts.

[0050] Furthermore, the automatic torque wrench 7 includes a wrench body 7-1, see Figure 5 The wrench body 7-1 is rotatably connected to the drive mechanism fixing portion 8, and the torque head 5 passes through and is connected to the drive mechanism fixing portion 8. The wrench body 7-1 can rotate freely relative to the fixed position, so that when encountering interference objects during the switching of workstations, it can rotate completely by itself, ensuring that the entire reversing process does not require manual intervention. In other alternative embodiments, the wrench body 7-1 is fixedly connected to the drive mechanism fixing portion 8.

[0051] Specifically, the drive mechanism fixing portion 8 is evenly provided with four assembly holes 8-2, see Figure 5 The torque heads corresponding to the four first drive mechanisms 7 are inserted into the assembly holes 8-2, so that the four first drive mechanisms 7 can act on the four corresponding evenly distributed nuts on the kettle cover 14 at the same time, so that the fastening position of the kettle cover 14 is evenly stressed, thereby improving the sealing of the kettle cover.

[0052] In this embodiment, the device further comprises a second driving mechanism 1 for driving the driving mechanism fixing part 8 to rotate, and the second driving mechanism 1 comprises a stepping motor, and the output end of the stepping motor is connected to a reducer. The output end of the second driving mechanism 1 is provided with a connecting rod 1-1, see Figure 6 , Figure 7, a rolling body 3 is provided at the end of the connecting rod 1-1, and the rolling body 3 is rotatably connected to the connecting rod 1-1 through a rotating shaft 3-2; the driving mechanism fixing part 8 is provided above the nut loosening part 11, and the driving mechanism fixing part 8 is provided with a mounting plate 4 in a direction close to the nut loosening part 11, and the mounting plate 4 is provided with a rolling body accommodating groove 3-1, and the rolling body 3 is arranged in the rolling body accommodating groove 3-1. The rolling body 3 is preferably a roller, and the roller is embedded in the rolling body accommodating groove 3-1. The roller 3 abuts against the upper end of the rolling body accommodating groove 3-1, and the width of the rolling body accommodating groove 3-1 is greater than the diameter of the roller 3. The upper end of the rolling body accommodating groove 3-1 refers to the direction along the axial direction of the driving mechanism fixing part 8 and away from the nut 10, and the width of the rolling body accommodating groove 3-1 refers to the width perpendicular to the axial direction of the driving mechanism fixing part 8. Through the rotation of the stepper motor, the connecting rod 3-1 is driven to rotate, and the rolling body 3 drives the driving mechanism fixing part 8 to perform a combined rotation and up and down movement. The slot width of the rolling body accommodating groove 3-1 is larger than the diameter of the roller. In this way, it can be ensured that when the roller drives the driving mechanism fixing part 8 to rotate, the driving mechanism fixing part 8 can be moved upward for a distance before rotating. In this way, it can be ensured that the output end of the first driving mechanism 7 can be smoothly pulled out from the upper end of the nut tensioner 11, and then rotated to another position, and under the action of its own gravity, it moves downward to connect with the nut tensioner 11, so as to realize the first driving mechanism 7 switching position, and the operation is simple.

[0053] Preferably, it further comprises a drive mechanism mounting portion 13 and a controller 100, wherein the second drive mechanism 1 is mounted on the drive mechanism mounting portion 13 through a drive mechanism mounting plate 1-2; the drive mechanism mounting portion 13 further comprises at least one limit switch 2 for limiting the travel of the connecting rod 1-1, wherein the limit switch 2 is arranged at a predetermined position of the drive mechanism mounting portion 13, and each of the limit switch 2 and the second drive mechanism 1 is electrically connected to the controller 100 respectively. When the drive mechanism fixing portion 8 rotates and switches positions, the second drive mechanism drives the connecting rod 1-1 to rotate until it touches the contact of the limit switch 2, and the limit switch 2 sends an electrical signal to the controller 100, and the controller 100 controls the second drive mechanism 1 to stop rotating according to the received electrical signal, thereby fixing the drive mechanism fixing portion 8 at a predetermined position. Precise control is achieved, and the accuracy of the drive mechanism fixing portion 8 when switching positions is ensured.

[0054] Please continue to see Figure 6In this embodiment, there are two limit switches 2, which are respectively arranged on both sides of the second drive mechanism 1, so that the assembly of the drive mechanism fixing part 8 is simpler. It is only necessary to make the mounting plate 4 between the two limit switches 2. Then, no matter what the direction of rotation of the second drive mechanism 1 is, the positioning of the drive mechanism fixing part 8 can be achieved. Each of the limit switches 2 is electrically connected to the controller 100. The position where the limit switch 2 is set is set in such a way that when the connecting rod 1-1 rotates to the position of the limit switch 2 contact, the output end of the drive mechanism fixing part 8 can be matched and connected with the nut tensioner 11. When the second drive mechanism 1 stops rotating, the drive mechanism fixing part 8 can be under the combined action of the second drive mechanism 1 and its own gravity, and the output end of the first drive mechanism 7 is just connected with the nut tensioner at the same time, thereby completing the conversion position.

[0055] Preferably, the drive mechanism mounting portion 13 is assembled on the kettle cover 14. The drive mechanism fixing portion 8, the elastic member fixing portion 9, and the kettle cover 14 are each provided with a center hole, and the center hole 8-1 of the drive mechanism fixing portion 8 is tightly connected to a linear bearing 6; it also includes a positioning rod 17, the positioning rod 17 is sequentially passed through the linear bearing 6, the center hole 9-2 of the elastic member fixing portion 9, and the center hole of the kettle cover 14, and the positioning rod 17 is connected to the kettle cover 14, which can be tightly connected or detachably connected, such as clamping. The positioning rod 17 is slidably connected to the linear bearing 6 through a sleeve 16, and the positioning rod 17 realizes the limiting of the drive mechanism fixing portion 8, so that the drive mechanism fixing portion 8 can move up and down and rotate along the positioning rod 17, ensuring the stability and accuracy of the drive mechanism fixing portion 8 in switching positions. The positioning rod 17 and the sleeve 16 can be tightly connected or fixedly connected, such as welding.

[0056] In this embodiment, the reactor cover 14 is provided with a plurality of assembly grooves 14-1 evenly along the circumference, and the drive mechanism mounting portion 13 is a ring-shaped structure. Figure 8 The inner edge of the drive mechanism mounting portion 13 is provided with a protrusion 13-1, and the protrusion 13-1 is matched with the assembly groove 14-1 of the kettle cover, so that the drive mechanism mounting portion 13 is assembled through the cooperation between the protrusion 13-1 and the assembly groove 14-1 of the kettle cover, and the operation is simple. Further, the assembly groove 14-1 of a certain width and height is opened downward along the upper end of the kettle cover 14, such as Figure 2 As shown, the protrusion 13-1 and the assembly groove 14-1 are further fastened together by a screw structure. The size, shape and number of the assembly groove 14-1 and the protrusion 13-1 are not used to limit the protection scope of the present invention and can be set according to actual assembly needs, and are not limited here.

[0057] In this embodiment, the positioning rod 17 is further provided with a stirring rod 19. Figure 6 As shown, the stirring rod 19 is sleeved in the positioning rod 17 and extends into the kettle cover 14 and the kettle body 12 for stirring.

[0058] The tight connection in this embodiment refers to an interference connection.

[0059] The working process of the nut tightening device of the reactor in this embodiment is as follows:

[0060] The bolts 18 are matched with the threaded holes on the kettle body 12, the kettle cover 14 is assembled on the kettle body 12, the drive mechanism mounting part 13 is assembled on the kettle cover 14, the combination of the tensioner fixing part 9 and the nut tensioner 11 is assembled on the nut 10, the nut tensioner 11 and the nut 10 are matched one by one, the combination of the drive mechanism fixing part 8, the first drive mechanism 7 and the positioning rod 17 is assembled on the tensioner fixing part 9, the positioning rod 17 is penetrated in the center hole of the tensioner fixing part 9, and the mounting plate 14 is oriented to the predetermined position, and the positioning rod 17 is fixedly connected to the center hole of the kettle cover 14.

[0061] The driving mechanism fixing part 8 automatically matches and connects with the second connection part of the nut tensioner 11 under the action of its own gravity. The personnel stay away from the site and remotely control the rotation of the first driving mechanism 7 through the operation box to achieve the tightening of a group of nuts 10. After the tightening is completed, the first driving mechanism is closed through the operation box to stop the rotation. The driving mechanism fixing part 8 is switched by operating the controller 100. The driving mechanism fixing part 8 automatically matches and connects with the nut tensioner 11 of the remaining group of nuts under the combined action of the second driving mechanism 1 and its own gravity, thereby completing the switching of the positions and operating the first driving mechanism 7 to rotate, thereby completing the tightening of all nuts. The nut removal process is the opposite of this process.

[0062] The above disclosure is only the preferred embodiment of the present invention. The preferred embodiment does not describe all the details in detail, nor does it limit the invention to the specific implementation method described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can make good use of the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An automatic nut tightening device for a reactor, characterized in that: include: The nut tensioner and the first drive mechanism capable of remote control also include a drive mechanism fixing portion, and each of the first drive mechanisms is connected to the drive mechanism fixing portion; The first driving mechanism is provided with a plurality of nut loosening members, and the number of the nut loosening members is an integer multiple of the number of the first driving mechanism; it also includes a second driving mechanism for driving the fixed part of the driving mechanism to rotate; the output end of the second driving mechanism is provided with a connecting rod, and the end of the connecting rod is provided with a rolling body; the fixed part of the driving mechanism is arranged above the nut loosening member, and the fixed part of the driving mechanism is provided with a mounting plate in the direction close to the nut loosening member, and the mounting plate is provided with a rolling body accommodating groove, and the rolling body is arranged in the rolling body accommodating groove; the rolling body abuts against the upper end of the rolling body accommodating groove, and the width of the rolling body accommodating groove is greater than the width of the rolling body, and the connecting rod is driven to rotate through the rotation of the second driving structure, and the rolling body drives the fixed part of the driving mechanism to rotate and move up and down in combination; it also includes a driving mechanism mounting part and a controller, and the second driving mechanism is arranged on the driving mechanism mounting part; the driving mechanism mounting part also includes at least one limit switch for limiting the movement stroke of the connecting rod, and the limit switch is arranged at a predetermined position of the driving mechanism mounting part, and each of the limit switch and the second driving mechanism is electrically connected to the controller respectively; The number of the nut loosening members is the same as the number of nuts on the reactor cover, and each of the nut loosening members is matched and connected with the nut one by one; each of the first driving mechanisms drives one of the nut loosening members to rotate each time, thereby achieving the loosening or tightening of the nut.

2. The automatic nut tightening device for a reactor according to claim 1, characterized in that: The first driving mechanism includes an automatic torque wrench and an operating box, the operating box is electrically connected to the automatic torque wrench, and the operating box includes an operating button for controlling the rotation of the automatic torque wrench.

3. The automatic nut tightening device for a reactor according to claim 1, characterized in that: The reaction kettle comprises a kettle body and a kettle cover, wherein the kettle cover is fixed to the kettle body by bolts and nuts, and the driving mechanism mounting part is assembled on the kettle cover; the driving mechanism fixing part and the kettle cover are each provided with a center hole, and the center hole of the driving mechanism fixing part is connected to a linear bearing; and further comprises a positioning rod, wherein the positioning rod is sequentially passed through the center holes of the linear bearing and the kettle cover, the positioning rod is connected to the kettle cover, and the positioning rod is slidably connected to the linear bearing through a sleeve.

4. The automatic nut tightening device for a reactor according to claim 1, characterized in that: The first driving mechanism comprises a body, the body of the first driving mechanism is rotatably connected to the driving mechanism fixing part, and the output end of the first driving mechanism is disposed through the driving mechanism fixing part.

5. The automatic nut tightening device for a reactor according to claim 4, characterized in that: The driving mechanism fixing portion is provided with a plurality of assembly holes evenly distributed along the circumferential direction, and the assembly holes are arranged coaxially with the nuts of the reactor cover, the body of the first driving mechanism is arranged at one end of the driving mechanism fixing portion, and the output end of the first driving mechanism is passed through the assembly hole.

6. The automatic nut tightening device for a reactor according to claim 1, characterized in that: The nut tightening member comprises: A first connection portion, used to connect with the nut, the first connection portion includes a nut accommodating space for accommodating the nut, the nut accommodating space is matched and connected with the nut; the height of the nut accommodating space is greater than twice the height of the nut, and the nut can move along the height direction of the nut accommodating space; The second connection part is used to be connected to the output end of the first driving mechanism and is arranged at an end away from the first connection part. The output end of the first driving mechanism is matched and connected with the second connection part.

7. The automatic nut tightening device for a reactor according to claim 1, characterized in that: It also includes a tensioner fixing portion, and each of the nut tensioners is connected to the tensioner fixing portion; the tensioner fixing portion includes a plurality of mounting holes evenly distributed along the circumferential direction, and each of the nut tensioners is tightly connected to a mounting hole of the tensioner fixing portion through a bearing, the inner ring of the bearing is tightly connected to the nut tensioner, and the outer ring of the bearing is tightly connected to the tensioner fixing portion.

8. A reaction kettle, characterized in that: A nut automatic tightening device for a reactor as described in any one of claims 1 to 7 is provided.

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