Wall-mounted milling machine for removing transition plate for nuclear power plant building and mounting method

Abstract

The invention relates to a wall-mounted milling machine for removing transition plates for nuclear power plant building and a mounting method. According to the wall-mounted milling machine for removing the transition plate for the nuclear power plant building, the transition plate is welded to a stainless steel plate, a supporting rod is welded to the middle of the transition plate, the wall-mounted milling machine comprises a fixed supporting base arranged on the supporting rod in a sleeving mode and a rotary supporting base capable of rotating relative to the fixed supporting base, and the rotary supporting base is used for being connected with an alignment frame; a plurality of puller bolts are connected between the fixed supporting seat and the transition plate, and the threaded end of the supporting rod is in threaded connection with a locking nut used for abutting against the rotating support. The power assembly is used for driving the rotating support to rotate, and the in-place reminding anti-falling assembly is arranged on the rotating support; the longitudinal driving assembly is in driving connection with a transverse sliding table assembly, and the transverse sliding table assembly is in driving connection with a spindle motor used for driving a milling cutter. The wall-mounted milling machine for removing the transition plate for nuclear power plant building and the mounting method have the advantages of being compact in structure and high in efficiency.

Description

Technical Field

[0001] The invention belongs to the field of equipment for nuclear power plant construction, and in particular relates to a wall-mounted milling machine for removing transition plates for nuclear power plant construction and an installation method thereof. Background Art

[0002] A nuclear power plant refers to a facility that converts nuclear energy into electrical energy through appropriate equipment. Nuclear power plants are usually built in coastal areas because coastal areas usually have abundant water resources, which facilitates the cooling and discharge needs of nuclear power plants.

[0003] The construction of a nuclear power plant is a complex and delicate process, usually starting with the laying of the foundation, with concrete used to form the raft foundation of the nuclear island. The construction of a nuclear power plant is inseparable from the reinforced concrete structure, where concrete provides rigidity and steel bars provide flexibility, forming a solid structure. In order to avoid seawater infiltration, the plant building of a nuclear power plant needs to be anti-corrosive and anti-rust. Stainless steel is widely installed on the periphery of the reinforced concrete structure as the outer wall of the plant due to its corrosion resistance. The stainless steel plates laid are relatively thin, about four or five millimeters.

[0004] During the construction of the nuclear power plant layer by layer, it is necessary to build scaffolding and other equipment for construction assistance. The scaffolding needs to be built on the already built building layers to gradually increase the height of the nuclear power plant. The scaffolding needs to be removed after the construction of the plant is completed. Since the stainless steel plate is relatively thin, it must not be damaged during the construction process or the subsequent removal of the scaffolding to avoid safety hazards and better corrosion and rust prevention. Therefore, several transition plates will be welded on the stainless steel plate, and holes will be punched on the transition plate to install scaffolding, etc., and then the transition plate will be removed to avoid affecting the appearance of the nuclear power plant. It is time-consuming and laborious to manually use an angle grinder to mill several welding edges of the transition plate, so there is an urgent need for a solution that can remove the transition plate without damaging the stainless steel plate. Summary of the invention

[0005] We hope to provide a relatively automated way to remove stainless steel plates without damaging them. In the process of removing them layer by layer, we must also take safety into consideration to avoid danger from equipment falling off. Therefore, we must also take into account the compact and light structure.

[0006] In the first aspect, the wall-mounted milling machine for removing transition plates for nuclear power plant construction provided by the present application adopts the following technical solution: A wall-mounted milling machine for removing a transition plate for construction of a nuclear power plant, wherein the transition plate is welded on a stainless steel plate, a support rod is welded in the middle of the transition plate, a thread is provided at one end of the support rod away from the transition plate, the wall-mounted milling machine comprises a fixed support seat sequentially sleeved on the support rod and a rotating support seat capable of rotating relative to the fixed support seat, the rotating support seat is used for detachably connecting to a alignment frame, a plurality of tightening bolts are connected between the fixed support seat and the transition plate, and a locking nut for pressing the rotating support seat is threadedly connected to the threaded end of the support rod; It also includes a power component for driving the rotating support to rotate and an in-position reminder and anti-drop component, and the rotating support is provided with a longitudinal driving component; The longitudinal drive assembly is drivingly connected to a transverse slide assembly, the transverse slide assembly is drivingly connected to a spindle motor, and the spindle motor is drivingly connected to a milling cutter.

[0007] By adopting the above technical solution, the fixed support seat and the rotating support seat are sequentially mounted on the support rod. First, the stainless steel plate is used as a reference, and the position of the fixed support seat relative to the stainless steel plate is adjusted using the jacking bolts to drive the alignment frame to adjust the position and make the two end planes of the alignment frame flat against the stainless steel plate, so that the fixed support seat is parallel to the stainless steel plate. After the adjustment is in place, the milling surface can be determined and the locking nut can be tightened. Through the above operation, it can be avoided that the transition plate is not parallel to the stainless steel plate and milled to the stainless steel plate, causing damage to the stainless steel plate.

[0008] After the alignment is completed, the longitudinal drive assembly is fixed on the alignment frame, and then the transverse slide assembly, spindle motor and milling cutter are installed on the longitudinal drive assembly. In order to avoid the risk of falling due to too much cantilever equipment, the transverse slide assembly cannot be made too long to reduce the weight, and its length is about half of the transition plate. Since the weld may be relatively wide, the transverse slide assembly drives the milling cutter to adjust the feed amount. Each time the feed amount is adjusted, the longitudinal drive assembly drives the transverse slide assembly to move once along the length of the entire side of the transition plate, and the spindle motor drives the milling cutter to complete a milling operation at the same time. Therefore, the wall-mounted milling machine of the present application is compact, reasonable, small and lightweight.

[0009] After completing milling of one edge of the transition plate, loosen the locking nut and manually pull the power assembly to rotate the rotating support so that the rotating support drives the longitudinal drive assembly to rotate 90 degrees, so that the milling cutter faces the second edge of the transition plate to be milled. The in-place reminder anti-slip assembly gives the operator's hand a hard reaction prompt to remind the rotating support to rotate in place, and at the same time, the in-place reminder anti-slip assembly can press the fixed support seat and the rotating support to prevent the two from detaching.

[0010] Optionally, the longitudinal drive assembly includes a base fixedly connected to the rotating support, a drive motor arranged on the base, and a reduction gearbox connected to the output shaft of the drive motor, the reduction gearbox is driven by a lead screw, and the lead screw is driven by the transverse slide assembly.

[0011] By adopting the above technical solution, the driving motor outputs power and is decelerated through the reduction box, which drives the lead screw to rotate. The lead screw drives the transverse slide assembly to move along the length direction of the lead screw. The transverse slide assembly drives the milling cutter to move along the length of the transition plate to be milled and implement milling.

[0012] Optionally, the transverse slide assembly includes a transverse slideway drivingly connected to the lead screw, a nut bracket fixedly arranged on the transverse slideway, a slide frame slidably connected to the transverse slideway, and a transverse motor arranged on the slide frame; The output shaft of the transverse motor is provided with a thread and is threadedly connected to the nut bracket. The end of the slide frame away from the transverse motor is provided with a Z-axis driving assembly, and the Z-axis driving assembly drives the spindle motor to approach or move away from the stainless steel plate.

[0013] By adopting the above technical solution, the lead screw drives the transverse slide to move along the length of the lead screw in the longitudinal direction, and the transverse motor output shaft and the nut bracket are rotatably connected in the transverse direction, thereby driving the slide to move back and forth along the transverse slide, and the slide drives the transverse motor arranged thereon to move back and forth. The transverse distance between the transverse motor and the Z-axis drive assembly does not change, and the transverse distance between the Z-axis drive assembly and the spindle motor does not change, thereby saving the space occupied by the transverse slide assembly. At the same time, the spindle motor located at one end of the slide limits one end of the slide to prevent the slide from falling off from one end of the transverse slide.

[0014] Optionally, the slide frame includes a bottom plate and two parallel side plates vertically connected to the bottom plate, and the transverse motor is fixed to one end of the bottom plate; The Z-axis driving assembly includes a first gear located between the two side plates, the gear shafts all cross the two side plates, and a rotating handle and a clamping cap are respectively provided on the gear shafts outside the two side plates; The first gear is meshed with a rack arranged vertically on a bottom plate, a vertical plate is arranged vertically on one end of the bottom plate away from the horizontal motor, and a communicating slot is provided on the bottom plate and the vertical plate; The rack is inserted in the slot, the bottom of the slot on the vertical plate limits the rack, the rack can drive the spindle motor to move along the Z axis, and the spindle motor is slidably arranged at the ends of the two side plates.

[0015] By adopting the above technical solution, the bottom plate supports the transverse motor, and the side plates are set on both sides of the transverse motor to improve stability and safety. The operator manually rotates the handle to drive the first gear to rotate, and the rotation of the first gear drives the rack to move, and the movement of the rack drives the spindle motor and the milling cutter to move closer to or away from the stainless steel plate. Observe the distance between the milling cutter and the stainless steel plate, and after judging that the first gear has rotated into place, rotate the clamping cap to clamp the side plate to limit the first gear. The spindle motor is located between the two side plates, which can not only limit the movement route of the spindle motor but also make the movement smoother and safer.

[0016] Optionally, the power assembly includes a second gear rotatably connected to the rotating support and a large gear fixed to the fixed support seat, and the large gear is sleeved on the support rod; The second gear and the large gear are located between the fixed support seat and the rotating support seat, and the second gear and the large gear are embedded in the rotating support seat together.

[0017] By adopting the above technical solution, the tool is inserted into the driving hole to drive the second gear to rotate. Under the meshing of the large gear, the second gear drives the rotating support to rotate around the support rod, and the rotation of the rotating support drives the wall-mounted milling machine to rotate. When the rotation is in place, the in-place reminder anti-drop assembly restricts the rotating support from continuing to rotate to provide a in-place reminder, and the milling cutter comes to the second edge of the transition plate and performs milling.

[0018] Optionally, the in-place reminder anti-drop assembly includes a first hard contact member and a second hard contact member, the first hard contact member is fixed to a side of the fixed support seat facing the rotating support seat, the second hard contact member is fixed to a side of the rotating support seat facing the fixed support seat, the fixed support seat is provided with a first arc groove running through the thickness direction, the rotating support is provided with a second arc groove running through the thickness direction, and the first arc groove and the second arc groove are both located on the outer ring of the large gear; The first hard contact member comprises a first rod body fixedly connected to the fixed support seat, the first rod body is inserted into the second arc groove and the end thereof is connected to a first cap body, and the first cap body is arranged on a side of the rotating support away from the fixed support seat; The second hard contact member includes a second rod body fixedly connected to the rotating support, the second rod body is inserted into the first arc groove and the end thereof is connected to a second cap body, and the second cap body is arranged on a side of the fixed support seat away from the rotating support.

[0019] By adopting the above technical solution, after the milling cutter has finished milling the weld on one side of the transition plate, the second gear is driven to rotate, and the rotating support rotates to drive the second rod body of the second hard contact member on it to rotate along the first arc groove. At the same time, during the rotation of the second rod body, the second cap body of the second hard contact member blocks and presses the fixed support seat from one side to prevent the fixed support seat from separating from the rotating support from one side. When the second rod body is blocked by one end of the first arc groove and cannot be rotated, it is prompted that the rotating support is rotated to the right position.

[0020] The first rod body of the first hard contact member on the fixed support seat rotates along the second arc groove. At the same time, during the rotation of the first rod body, the first cap body of the first hard contact member blocks and presses the rotating support from one side to prevent the rotating support from detaching from one side of the fixed support seat. During the rotation of the first rod body, it will also be blocked by one end of the second arc groove, and the second rod body will be in place at the same time. Prompt.

[0021] When it is necessary to continue milling the other two sides, the locking nut can be loosened, the rotating support can be rotated 90 degrees relative to the fixed support seat, and then the fixed support seat and the rotating support can be rotated 180 degrees together. After adjusting the position of the alignment frame, the third side can be milled, and then the rotating support can be rotated again to complete the milling of the fourth side. Only opening an arc groove of the arc size corresponding to one side of the transition plate can make the arc groove have more room to avoid components such as power components, and the rigidity of the rotating support is more guaranteed.

[0022] Optionally, the transition plate, the fixed support seat and the rotating support are all rectangular, there are two first hard contact members and two second hard contact members, there are two first arc-shaped grooves and two second arc-shaped grooves, one first hard contact member corresponds to one second arc-shaped groove, and one second hard contact member corresponds to one first arc-shaped groove; The first arc groove and the second arc groove are both 90 degree arcs, the two first hard contact members are located on the same diameter of the circle corresponding to the second arc groove, the two second hard contact members are located on the same diameter of the circle corresponding to the first arc groove, both ends of the two first arc grooves are separated by degree arcs, and both ends of the two second arc grooves are separated by degree arcs.

[0023] By adopting the above technical solution, two arc grooves are respectively arranged on the rectangular fixed support seat and the rectangular rotating support seat, the two ends of the two first arc grooves are arranged at intervals, the two ends of the two second arc grooves are arranged at intervals, and the arcs of the arc grooves are all 90. The first hard contact member prompts the rotation to be in place by touching the end of the second arc groove, and the second hard contact member touches the first arc groove as a prompt, so that the symmetrical sides of the rotating support are blocked by the second cap body, and the symmetrical sides of the fixed support seat are also blocked by the first cap body, so that the rotating support can be evenly stressed during the rotation process, and it is not easy to be deformed due to rotation, and it is not easy to be loose due to vibration.

[0024] After milling the two sides of the transition plate, you can loosen the locking nut, first rotate the rotating support 90 degrees relative to the fixed support seat, then rotate the support seat back 180 degrees, adjust the position of the alignment frame to the right position, and then perform milling again, and then rotate the rotating support again to complete the milling of the fourth side. When you need to continue milling the other two sides.

[0025] Optionally, the in-place reminder anti-drop assembly includes a third hard contact member and a fourth hard contact member, the third hard contact member is fixed on a side of the fixed support seat facing the rotating support seat, the fourth hard contact member is fixed on a side of the rotating support seat facing the fixed support seat, the fixed support seat is provided with a third arc groove running through the thickness direction, the rotating support is provided with a fourth arc groove running through the thickness direction, and the third arc groove and the fourth arc groove are both located on the outer ring of the large gear; The fourth hard contact member comprises a fourth cap body, the central axis of the second gear is inserted into the third arc groove and the end portion is fixedly connected to the fourth cap body, and the fourth cap body is arranged on a side of the fixed support seat away from the rotating support seat; The third hard contact member comprises a third rod body fixedly connected to the fixed support seat, the third rod body is inserted into the fourth arc groove and the end thereof is connected to a third cap body, and the third cap body is arranged on a side of the rotating support away from the fixed support seat; The third rod body is sleeved with an elastic member and a hemispherical shell, the elastic member is located in the hemispherical shell, and the fourth arc-shaped groove is provided with a semicircular groove adapted to the shape of the hemispherical shell.

[0026] By adopting the above technical solution, after the milling cutter finishes milling the weld on one side of the transition plate, the second gear is driven to rotate, and the central axis of the second gear rotates along the third arc groove. At the same time, during the rotation process, the fourth cap body blocks and presses the fixed support seat from one side to prevent the fixed support seat from being separated from the rotating support from one side. The third rod body of the third hard contact member on the fixed support seat rotates along the fourth arc groove. At the same time, during the rotation of the third rod body, the third cap body of the third hard contact member blocks and presses the rotating support from one side to prevent the rotating support from being separated from one side of the fixed support seat. During the rotation of the third rod body, it will also be blocked by one end of the fourth arc groove, and at the same time, a positioning prompt is provided.

[0027] When the third rod body rotates to the semicircular groove of the fourth arc groove, under the elastic action of the elastic part, the hemispherical shell moves up into the semicircular groove, which will cause certain obstacles to the rotation of the rotating support, and can be used for a one-time rotation reminder. After multiple rotations, the rotating support can mill all edges of the transition plate, avoiding the inconvenience of reinstalling the fixed support seat during the milling process of a transition plate, especially when the transition plate size is relatively large and the arc groove is too large to affect its own rigidity.

[0028] Optionally, the transition plate, fixed support seat and rotating support are all rectangular, the third hard contact piece and the fourth hard contact piece are each one, the third arc groove and the fourth arc groove are each one and the arc angle is 270 degrees, and the semicircular groove is 90 degrees away from one end of the fourth arc groove.

[0029] By adopting the above technical solution, the two ends of the fourth arc-shaped groove are two in-place reminder points, and the positions of the two semicircular grooves are in-place reminder points, which constitute a total of four in-place reminder points, and can complete the milling of the four sides of the transition plate.

[0030] In a second aspect, the present application provides an installation method of a wall-mounted milling machine for removing transition plates for nuclear power plant construction, which is used for the aforementioned wall-mounted milling machine for removing transition plates for nuclear power plant construction, and adopts the following technical solution: A method for installing a wall-mounted milling machine for removing transition plates for nuclear power plant construction, used for the above-mentioned wall-mounted milling machine for removing transition plates for nuclear power plant construction, comprising: sequentially sleeve a fixed support seat and a rotating support seat on a support rod, so that one side of the rotating support seat is parallel to one side of the transition plate; Adjust the tightening bolts to make the alignment frame on the rotating support and the stainless steel plate flat, and then tighten the locking nut; Install the longitudinal drive assembly onto the rotating support; Install the cross slide assembly onto the drive assembly.

[0031] In summary, the present application includes at least one of the following beneficial technical effects: by setting a fixed support seat and an alignment frame to adjust the position based on the stainless steel plate, the milling surface can be accurately determined to avoid the transition plate being not parallel to the stainless steel plate and milling to the stainless steel plate, thereby damaging the stainless steel plate. At the same time, after completing the milling of one edge, the rotating support can be easily rotated without the need for a second leveling and milling of the next edge. The number of arc grooves needs to be set according to stiffness, stability, etc., to determine whether one or three rotations of the rotating support can be completed simultaneously when milling the four edges of a rectangular transition plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of a wall-mounted milling machine for removing transition plates for nuclear power plant construction embodying the present application; Figure 2 It is a schematic diagram of the structure of the lateral slide assembly embodying the present application; Figure 3 It is a schematic diagram of the structure of the Z-axis drive assembly embodying the present application; Figure 4 It is a structural schematic diagram of an in-place reminder anti-drop assembly according to the first embodiment of the present application; Figure 5 It is an exploded view of the in-place reminder anti-drop assembly of the first embodiment of the present application; Figure 6 It is a structural schematic diagram of an in-place reminder anti-drop assembly according to Embodiment 2 of the present application; Figure 7 It is an exploded view of the in-place reminder anti-drop assembly of the second embodiment of the present application; Figure 8 It is a cross-sectional view of the in-place reminder and anti-dropping component of the second embodiment of the present application.

[0033] Description of reference numerals: 1. Transition plate; 2. Support rod; 3. Alignment frame; 4. Jack bolt; 5. Lock nut; 6. Spindle motor; 7. Milling cutter; 8. Protective cover; 100. Stainless steel plate; 200. Control panel; 10. Fixed support seat; 11. First arc groove; 12. Third arc groove; 20. Rotating support; 21. Second arc groove; 22. Fourth arc groove; 221. Semicircular groove; 30. Power assembly; 31. Second gear; 32. Large gear; 40. In-place reminder anti-drop assembly; 41. First hard contact piece; 411. First rod body; 412. First cap body; 42. Second hard contact piece; 421. Second rod body; 422. Second cap body; 43. Third hard contact piece; 431. Third rod body; 432. Third cap body; 433. Elastic piece; 434. Hemispherical shell; 44. Fourth hard contact piece; 441. Fourth cap body; 50. Longitudinal drive assembly; 51. Base; 52. Drive motor; 53. Speed ​​reducer; 54. Lead screw; 60, horizontal slide assembly; 61, horizontal slide; 62, nut bracket; 63, slide frame; 631, bottom plate; 632, side plate; 633, vertical plate; 634, slot; 64, horizontal motor; 70. Z-axis driving assembly; 71. first gear; 72. rotating handle; 73. clamping cap; 74. rack. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-Figure 8 This application is described in further detail.

[0035] The embodiment of the present application discloses a wall-mounted milling machine for removing transition plates used in nuclear power plant construction.

[0036] Embodiment 1 See also Figure 1 , Figure 2 and Figure 3A wall-mounted milling machine for removing transition plates used in nuclear power plant construction. The transition plate 1 is a rectangular plate and its four sides are welded to a stainless steel plate 100 laid outside the nuclear power plant building. The length and width of the transition plate 1 are approximately 350 mm and 350 mm respectively. A support rod 2 is welded in the middle of the transition plate 1. The wall-mounted milling machine is hung on the support rod 2 to mill the four sides of the transition plate 1 respectively. The wall-mounted milling machine is also equipped with a safety rope (not shown in the figure).

[0037] The wall-mounted milling machine includes a rectangular fixed support seat 10 which is sequentially sleeved on the support rod 2 and a rectangular rotating support seat 20 which can rotate relative to the fixed support seat 10. Since the transition plate 1 may not be parallel to the stainless steel plate 100, the milling cutter 7 may be tilted during milling, thereby damaging the stainless steel plate 100. The two ends of the rotating support seat 20 are used for detachable connection with the alignment frame 3, and the planes of the two legs of the alignment frame 3 are flat against the stainless steel plate 100, so that the plane where the rotating support seat 20 is located is parallel to the plane of the stainless steel plate 100. The length and width of the fixed support seat 10 are approximately 180 mm and 260 mm respectively.

[0038] The four corner threads of the fixed support seat 10 are threaded with a plurality of jacking bolts 4 for adjusting the parallelism of the fixed support seat 10 relative to the stainless steel plate 100. The threaded end of the support rod 2 is threadedly connected with a locking nut 5 for pressing the rotating support 20. After the alignment frame 3 is flat against the stainless steel plate 100, the locking nut 5 is tightened to fix the position of the fixed support seat 10 and the pressing rotating support 20. The locking nut 5 is exposed and a circle of sockets is set on it for tool locking.

[0039] The rotating support 20 is provided with a power assembly 30 and a longitudinal driving assembly 50 for driving the rotation thereof. The longitudinal driving assembly 50 is drivingly connected to a transverse slide assembly 60 , and the transverse slide assembly 60 is drivingly connected to a spindle motor 6 , and the spindle motor 6 is drivingly connected to a milling cutter 7 .

[0040] The longitudinal drive assembly 50 includes a rectangular base 51 fixedly connected to the rotating support 20, a driving motor 52 disposed on the base 51, and a reduction box 53 connected to the output shaft of the driving motor 52. The reduction box 53 is driven by a lead screw 54, and the lead screw 54 rotates to drive the transverse slide assembly 60 to move back and forth. Both sides of the base 51 are fixedly connected to the rotating support 20 by bolts.

[0041] The transverse slide assembly 60 includes a transverse slide 61 drivingly connected to the lead screw 54 , a nut bracket 62 fixedly disposed on the transverse slide 61 , a slide frame 63 slidably connected to the transverse slide 61 , and a transverse motor 64 disposed on the slide frame 63 .

[0042] The output shaft of the transverse motor 64 is provided with a thread and is threadedly rotatably connected to the nut bracket 62 . A Z-axis driving assembly 70 is provided at one end of the slide 63 away from the transverse motor 64 . The Z-axis driving assembly 70 drives the spindle motor 6 to approach or move away from the stainless steel plate 100 .

[0043] The slide 63 includes a bottom plate 631 and two parallel side plates 632 vertically connected to the bottom plate 631, and the horizontal motor 64 is fixed to one end of the bottom plate 631. A vertical plate 633 is vertically arranged at one end of the bottom plate 631 away from the horizontal motor 64. The vertical plate 633 and the two side plates 632 form a space for placing the spindle motor 6 on the side away from the horizontal motor 64. The vertical plate 633 is provided with a slideway for the spindle motor 6 to slide along the length direction of the vertical plate 633. The spindle motor 6 can slide along the length direction of the vertical plate 633, which can not only limit the moving route of the spindle motor 6 but also make the movement more stable and safer. Then the milling cutter 7 is driven to approach or move away from the stainless steel plate 100.

[0044] A protective cover 8 is arranged on the outside of the spindle motor 6 to prevent iron filings from jumping around. A control panel 200 is arranged on the side of the slide 63 away from the spindle motor 6. The control panel 200 is used to control the operation of the milling machine and is blocked on the horizontal motor 64.

[0045] In order to avoid the risk of too many cantilevered devices falling, the transverse slide assembly 60 cannot be made too long, and its length is about half of the transition plate 1. However, the weld may be relatively wide, and the transverse slide assembly 60 drives the milling cutter 7 to adjust the feed amount. Each time the feed amount is adjusted, the longitudinal drive assembly 50 drives the transverse slide assembly 60 to move along the entire length of the transition plate 1, and the spindle motor 6 drives the milling cutter 7 to complete a milling.

[0046] In addition, the nut bracket 62 is fixed, while the transverse motor 64 moves by itself and drives the spindle motor 6 to move, which makes the whole structure more compact compared to the structural setting mode in which the spindle motor 6 gradually moves away from the transverse motor 64. The rack 74 can abut against the bottom of the slot 634 to implement the limit, so the present application makes full use of other functions besides the function of the structure itself. The wall-mounted milling machine of the present application is compact and light and is suitable for the current transition plate 1 that cannot hang a large milling machine.

[0047] The Z-axis driving assembly 70 includes a first gear 71 located between two side plates 632, and the gear shafts all cross the two side plates 632. A rotating handle 72 and a clamping cap 73 are respectively provided on the gear shafts outside the two side plates 632. The first gear 71 is meshed with a rack 74 provided vertically on the bottom plate 631, and a slot 634 is provided on the bottom plate 631 and the vertical plate 633 to communicate with each other.

[0048] The rack 74 is inserted into the slot 634 , and the bottom of the slot 634 on the vertical plate 633 limits the rack 74 , so that the rack 74 can drive the spindle motor 6 to move along the Z axis.

[0049] The operator manually rotates the handle 72 to drive the first gear 71 to rotate, and the rotation of the first gear 71 drives the rack 74 to move, and the movement of the rack 74 drives the spindle motor 6 and the milling cutter 7 to move closer to or away from the stainless steel plate 100. Observe the distance between the milling cutter 7 and the stainless steel plate 100, and after judging that the first gear 71 has rotated to the right position, rotate the clamping cap 73 to clamp the side plate 632, limit the first gear 71 and prevent it from rotating. In order to prevent the vibration during milling from causing the clamping cap 73 to be not firmly clamped, the housing of the spindle motor 6 and the two sides of the vertical plate 633 are fixed by bolts.

[0050] See also Figure 4 and Figure 5 After the milling of one side of the transition plate 1 is completed, the power assembly 30 is required to rotate the rotating support 20, and the rotating support 20 drives the milling machine to rotate 90 degrees to mill the second side.

[0051] The power assembly 30 includes a second gear 31 rotatably connected to the rotating support 20 and a large gear 32 fixed to the fixed support 10, a driving hole is provided on the central axis of the second gear 31, and the large gear 32 is sleeved on the support rod 2. The second gear 31 and the large gear 32 are located between the fixed support 10 and the rotating support 20, and the second gear 31 and the large gear 32 are embedded in the groove opened on the rotating support 20.

[0052] The operator inserts the tool into the driving hole of the central axis of the second gear 31 to drive the second gear 31 to rotate. Under the engagement of the large gear 32, the second gear 31 drives the rotating support 20 to rotate 90 degrees around the support rod 2. The rotation of the rotating support 20 drives the wall-mounted milling machine to rotate 90 degrees and mill the second edge of the transition plate 1.

[0053] The rotating support 20 is provided with an in-place reminder anti-dropout assembly 40 for reminding that the rotating support 20 has rotated 90 degrees. The in-place reminder anti-dropout assembly 40 includes two first hard contacts 41 and two second hard contacts 42, wherein the first hard contact 41 is fixed to a side of the fixed support seat 10 facing the rotating support 20, and the second hard contact 42 is fixed to a side of the rotating support 20 facing the fixed support seat 10.

[0054] The fixed support seat 10 is provided with two first arc grooves 11 penetrating the thickness of the fixed support seat 10, and the rotating support 20 is provided with two second arc grooves 21 of the thickness of the rotating support 20, and the first arc groove 11 and the second arc groove 21 are both located on the outer ring of the large gear 32. One first hard contact member 41 corresponds to one second arc groove 21, and one second hard contact member 42 corresponds to one first arc groove 11.

[0055] The first hard contact member 41 includes a first rod 411 fixedly connected to the fixed support seat 10 . The first rod 411 is inserted into the second arc groove 21 and the end thereof is connected to a first cap 412 . The first cap 412 is disposed on a side of the rotating support 20 away from the fixed support seat 10 .

[0056] The second hard contact member 42 includes a second rod 421 fixedly connected to the rotating support 20 . The second rod 421 is inserted into the first arc groove 11 and the end thereof is connected to a second cap 422 . The second cap 422 is disposed on a side of the fixed support 10 away from the rotating support 20 .

[0057] The first arc groove 11 and the second arc groove 21 are both 90 degree arcs, the two first hard contact members 41 are located on the same diameter of the circle corresponding to the second arc groove 21, the two second hard contact members 42 are located on the same diameter of the circle corresponding to the first arc groove 11, the two first arc grooves 11 are concentric and both ends are separated by 90 degree arcs, and the two second arc grooves 21 are concentric and both ends are separated by 90 degree arcs.

[0058] Two arc grooves are respectively arranged on the fixed support seat 10 and the rotating support seat 20, and the two ends of the two first arc grooves 11 are arranged at intervals, and the two ends of the two second arc grooves 21 are arranged at intervals. The first hard contact member 41 prompts the rotation to be in place by touching the end of the second arc groove 21, and the second hard contact member 42 prompts by touching the first arc groove 11, so that the symmetrical sides of the rotating support 20 are blocked and pressed by the second cap body 422, and the symmetrical sides of the fixed support seat 10 are also blocked and pressed by the first cap body 412, so that the rotating support 20 can be evenly stressed during the rotation process, and is not easy to be deformed due to rotation, and is not easy to be loose due to vibration.

[0059] After milling the two sides of the transition plate 1, loosen the locking nut 5, first rotate the rotating support 20 90 degrees relative to the fixed support seat 10, then rotate the fixed support seat 10 and the rotating support 20 together 180 degrees, adjust the position of the alignment frame 3 again and then mill the third side, and after milling the third side of the transition plate 1, rotate the rotating support 20 again to complete the milling of the fourth side of the transition plate 1. When the size of the transition plate 1 is relatively small, two arc grooves are set to avoid the arc groove being too large to affect its own rigidity, and the safety is better.

[0060] Embodiment 2 Please also read Figure 6 , Figure 7 and Figure 8The difference between the second embodiment and the first embodiment is that when the size of the transition plate 1 is relatively large, the arc of the arc groove can be increased without affecting its own rigidity. At this time, the second embodiment only needs to perform one leveling on the alignment frame 3, and the rotating support 20 can rotate three times to complete the milling of the four sides of the transition plate 1.

[0061] The in-place reminder and anti-detachment component 40 in this embodiment is different from that in the first embodiment. The in-place reminder and anti-detachment component 40 in this embodiment includes a third hard contact member 43 and a fourth hard contact member 44. The third hard contact member 43 is fixed to the side of the fixed support seat 10 facing the rotating support seat 20, and the fourth hard contact member 44 is fixed to the side of the rotating support seat 20 facing the fixed support seat 10. The fixed support seat 10 is provided with a third arc groove 12 that passes through its own thickness, and the rotating support seat 20 is provided with a fourth arc groove 22 that passes through its own thickness. The third arc groove 12 and the fourth arc groove 22 are both located on the outer ring of the large gear 32.

[0062] The arc angles of the third arc groove 12 and the fourth arc groove 22 are both 270 degrees. The fourth arc groove 22 is provided with two semicircular grooves 221 . Each semicircular groove 221 is 90 degrees away from an end of the fourth arc groove 22 adjacent thereto.

[0063] The fourth hard contact member 44 includes a fourth cap body 441 . The central axis of the second gear 31 is inserted into the third arc groove 12 and the end thereof is fixedly connected to the fourth cap body 441 . The fourth cap body 441 is disposed on a side of the fixed support seat 10 away from the rotating support seat 20 .

[0064] The third hard contact member 43 includes a third rod 431 fixedly connected to the fixed support seat 10 . The third rod 431 is inserted into the fourth arc groove 22 and the end thereof is connected to a third cap 432 . The third cap 432 is disposed on a side of the rotating support 20 away from the fixed support seat 10 .

[0065] The third rod body 431 is sleeved with an elastic member 433 and a hemispherical shell 434 . The elastic member 433 is located in the hemispherical shell 434 . The fourth arc groove 22 is provided with a semicircular groove 221 that matches the shape of the hemispherical shell 434 .

[0066] After the milling cutter 7 has finished milling the weld on one side of the transition plate 1, the second gear 31 is driven to rotate, and the central axis of the second gear 31 rotates along the third arc groove 12. At the same time, during the rotation process, the fourth cap body 441 blocks and presses the fixed support seat 10 from one side to prevent the fixed support seat 10 from detaching from the rotating support 20 from one side.

[0067] The third rod body 431 of the third hard contact piece 43 on the fixed support seat 10 rotates along the fourth arc groove 22. At the same time, during the rotation of the third rod body 431, the third cap body 432 of the third hard contact piece 43 blocks and presses the rotating support 20 from one side to prevent the rotating support 20 from detaching from the side of the fixed support seat 10. During the rotation of the third rod body 431, it will also be blocked by one end of the fourth arc groove 22, and a prompt of being in place can be provided at the same time.

[0068] In this embodiment, the central axis of the second gear 31 drives the second gear 31 , and a fourth cap body 441 is disposed at one end of the central axis of the second gear 31 to press and fix the support base 10 .

[0069] Whenever the third rod body 431 rotates to the semicircular groove 221 of the fourth arc groove 22, under the elastic action of the elastic member 433, the hemispherical shell 434 moves up into the semicircular groove 221, which will hinder the rotation of the rotating support 20 to a certain extent, and can be used for one rotation to remind the position, and two semicircular grooves 221 are set to complete two reminders. The two ends of the fourth arc groove 22 are also used as reminders. After three rotations, the rotating support 20 can mill all the edges of the transition plate 1, avoiding the inconvenience caused by the need to reinstall the fixed support seat 10 during the milling of a transition plate 1.

[0070] This embodiment is particularly suitable for the case where the transition plate 1 is relatively large in size and the arc groove has a large arc radius without affecting its own rigidity. The embodiment of the application also discloses an installation method for the above-mentioned wall-mounted milling machine for removing the transition plate for nuclear power plant construction.

[0071] See also Figure 1 , Figure 2 and Figure 4 A method for installing a wall-mounted milling machine for removing transition plates for nuclear power plant construction comprises the following steps: Step S1: The fixed support seat 10 and the rotating support seat 20 are sequentially mounted on the support rod 2, so that one side of the rotating support seat 20 is parallel to one side of the transition plate 1; Specifically, during installation, the rotating support 20 is parallel to one side of the transition plate 1 , and the side of the transition plate 1 is determined to be the milling side.

[0072] Step S2: Adjust the tightening bolt 4 so that the alignment frame 3 on the rotating support 20 and the stainless steel plate 100 are flush with each other, and then tighten the locking nut 5; Specifically, after determining the first milling edge of the transition plate 1, the fit between the alignment frame 3 and the stainless steel plate 100 is adjusted, and the position of the fixed support seat 10 is adjusted by rotating the tightening bolt 4 to make it parallel to the stainless steel plate 100. The rotating support 20 is laid on the fixed support seat 10, so the plate surface facing the alignment frame 3 on both sides of the rotating support 20 is in fit with the stainless steel plate 100.

[0073] Step S3: installing the longitudinal drive assembly 50 onto the rotating support 20; Specifically, the rectangular base 51 is fixed to the rotating support 20 by bolts.

[0074] Step S4: installing the transverse slide assembly 60 onto the longitudinal drive assembly 50; Specifically, the transverse slideway 61 of the transverse slide assembly 60 is threadedly connected to the lead screw 54 to complete the assembly, and a safety rope is used to connect it to the milling machine. The handle 72 is manually operated to adjust the distance between the milling cutter 7 and the stainless steel plate 100.

[0075] Input the processing parameters on the control panel 200, adjust the position of the slide 63, and determine the feed amount of the milling cutter 7 each time. Each time the feed amount is adjusted, the longitudinal drive assembly 50 drives the transverse slide assembly 60 to move once along the entire length of the side of the transition plate 1, and the spindle motor 6 drives the milling cutter 7 to complete a milling operation. Multiple movements of the longitudinal drive assembly 50 complete the width of the entire weld.

[0076] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A wall-mounted milling machine for removing transition plates used in nuclear power plant construction, wherein the transition plate (1) is welded to a stainless steel plate (100), a support rod (2) is welded to the middle of the transition plate (1), and a thread is formed at one end of the support rod (2) away from the transition plate (1), wherein: The wall-mounted milling machine comprises a fixed support seat (10) which is sequentially sleeved on the support rod (2) and a rotating support seat (20) which can rotate relative to the fixed support seat (10); the rotating support seat (20) is used for detachably connecting to the alignment frame (3); a plurality of tightening bolts (4) are connected between the fixed support seat (10) and the transition plate (1); and a locking nut (5) for pressing the rotating support seat (20) is threadedly connected to the threaded end of the support rod (2); It also includes a power assembly (30) for driving the rotating support (20) to rotate and an in-place reminder and anti-drop assembly (40), and the rotating support (20) is provided with a longitudinal driving assembly (50); The longitudinal drive assembly (50) is drivingly connected to a transverse slide assembly (60), the transverse slide assembly (60) is drivingly connected to a spindle motor (6), and the spindle motor (6) is drivingly connected to a milling cutter (7).

2. The wall-mounted milling machine for removing transition plates for nuclear power plant construction according to claim 1, characterized in that: The longitudinal drive assembly (50) comprises a base (51) fixedly connected to the rotating support (20), a driving motor (52) arranged on the base (51), and a reduction box (53) connected to the output shaft of the driving motor (52), the reduction box (53) being drivingly connected to a lead screw (54), and the lead screw (54) being drivingly connected to the transverse slide assembly (60).

3. The wall-mounted milling machine for removing transition plates for nuclear power plant construction according to claim 2, characterized in that: The transverse slide assembly (60) comprises a transverse slideway (61) drivingly connected to the lead screw (54), a screw nut bracket (62) fixedly arranged on the transverse slideway (61), a slide frame (63) slidably connected to the transverse slideway (61), and a transverse motor (64) arranged on the slide frame (63); The output shaft of the transverse motor (64) is provided with a thread and is threadedly connected to the nut bracket (62); an end of the slide frame (63) away from the transverse motor (64) is provided with a Z-axis drive assembly (70); the Z-axis drive assembly (70) drives the spindle motor (6) to move closer to or away from the stainless steel plate (100).

4. The wall-mounted milling machine for removing transition plates for nuclear power plant construction according to claim 3 is characterized in that: The slide frame (63) comprises a bottom plate (631) and two parallel side plates (632) vertically connected to the bottom plate (631), and the transverse motor (64) is fixed to one end of the bottom plate (631); The Z-axis driving assembly (70) comprises a first gear (71) located between the two side plates (632), the gear shafts both cross the two side plates (632), and the gear shafts outside the two side plates (632) are respectively provided with a rotating handle (72) and a clamping cap (73); The first gear (71) is meshed with a rack (74) arranged perpendicular to the bottom plate (631); a vertical plate (633) is arranged perpendicularly at one end of the bottom plate (631) away from the horizontal motor (64); and a communicating slot (634) is provided on the bottom plate (631) and the vertical plate (633); The rack (74) is inserted into the slot (634), and the bottom of the slot (634) on the vertical plate (633) limits the rack (74). The rack (74) can drive the spindle motor (6) to move along the Z axis. The spindle motor (6) is slidably arranged at the ends of the two side plates (632).

5. The wall-mounted milling machine for removing transition plates for nuclear power plant construction according to claim 1, characterized in that: The power assembly (30) comprises a second gear (31) rotatably connected to the rotating support (20) and a large gear (32) fixed to the fixed support seat (10), a driving hole being provided on the central axis of the second gear (31), and the large gear (32) being sleeved on the support rod (2); The second gear (31) and the large gear (32) are located between the fixed support seat (10) and the rotating support seat (20), and the second gear (31) and the large gear (32) are embedded in the rotating support seat (20) together.

6. The wall-mounted milling machine for removing transition plates for nuclear power plant construction according to claim 5, characterized in that: The in-position reminder anti-drop assembly (40) comprises a first hard contact piece (41) and a second hard contact piece (42), wherein the first hard contact piece (41) is fixed to a side of the fixed support seat (10) facing the rotating support seat (20), and the second hard contact piece (42) is fixed to a side of the rotating support seat (20) facing the fixed support seat (10), the fixed support seat (10) is provided with a first arc groove (11) extending through the thickness direction, and the rotating support seat (20) is provided with a second arc groove (21) extending through the thickness direction, and the first arc groove (11) and the second arc groove (21) are both located on the outer ring of the large gear (32); The first hard contact member (41) comprises a first rod body (411) fixedly connected to the fixed support seat (10), the first rod body (411) being inserted into the second arc-shaped groove (21) and having a first cap body (412) connected to an end thereof, the first cap body (412) being arranged on a side of the rotating support seat (20) facing away from the fixed support seat (10); The second hard contact member (42) comprises a second rod body (421) fixedly connected to the rotating support (20); the second rod body (421) is inserted into the first arc-shaped groove (11) and the end thereof is connected to a second cap body (422); the second cap body (422) is arranged on a side of the fixed support seat (10) facing away from the rotating support (20).

7. The wall-mounted milling machine for removing transition plates for nuclear power plant construction according to claim 6, characterized in that: The transition plate (1), the fixed support seat (10) and the rotating support seat (20) are all rectangular, the first hard contact member (41) and the second hard contact member (42) are both two, the first arc groove (11) and the second arc groove (21) are both two, one first hard contact member (41) corresponds to one second arc groove (21), and one second hard contact member (42) corresponds to one first arc groove (11); The first arc-shaped groove (11) and the second arc-shaped groove (21) are both 90-degree arcs, the two first hard contact members (41) are located on the same diameter of the circle corresponding to the second arc-shaped groove (21), the two second hard contact members (42) are located on the same diameter of the circle corresponding to the first arc-shaped groove (11), the two ends of the two first arc-shaped grooves (11) are spaced apart by 90-degree arcs, and the two ends of the two second arc-shaped grooves (21) are spaced apart by 90-degree arcs.

8. The wall-mounted milling machine for removing transition plates for nuclear power plant construction according to claim 5, characterized in that: The in-position reminder anti-drop assembly (40) comprises a third hard contact piece (43) and a fourth hard contact piece (44), the third hard contact piece (43) being fixed on a side of the fixed support seat (10) facing the rotating support seat (20), and the fourth hard contact piece (44) being fixed on a side of the rotating support seat (20) facing the fixed support seat (10), the fixed support seat (10) being provided with a third arc groove (12) extending through the thickness direction, and the rotating support seat (20) being provided with a fourth arc groove (22) extending through the thickness direction, and the third arc groove (12) and the fourth arc groove (22) being both located on the outer ring of the large gear (32); The fourth hard contact member (44) comprises a fourth cap body (441), the central axis of the second gear (31) is inserted into the third arc groove (12) and the end portion is fixedly connected to the fourth cap body (441), and the fourth cap body (441) is arranged on a side of the fixed support seat (10) away from the rotating support seat (20); The third hard contact member (43) comprises a third rod body (431) fixedly connected to the fixed support seat (10), the third rod body (431) is inserted into the fourth arc-shaped groove (22) and the end thereof is connected to a third cap body (432), and the third cap body (432) is arranged on a side of the rotating support seat (20) away from the fixed support seat (10); The third rod body (431) is sleeved with an elastic member (433) and a hemispherical shell (434); the elastic member (433) is located inside the hemispherical shell (434); and the fourth arc-shaped groove (22) is provided with a semicircular groove (221) that matches the shape of the hemispherical shell (434).

9. The wall-mounted milling machine for removing transition plates for nuclear power plant construction according to claim 8, characterized in that: The transition plate (1), the fixed support seat (10) and the rotating support seat (20) are all rectangular, the third hard contact member (43) and the fourth hard contact member (44) are both one, the third arc groove (12) and the fourth arc groove (22) are both one, and the arc angle is 270 degrees, and the fourth arc groove (22) is provided with two semicircular grooves (221), and the semicircular groove (221) is 90 degrees away from one end of the fourth arc groove (22).

10. A method for installing a wall-mounted milling machine for removing transition plates for nuclear power plant construction, used for the wall-mounted milling machine for removing transition plates for nuclear power plant construction as claimed in any one of claims 1 to 7, characterized in that: Includes steps: The fixed support seat (10) and the rotating support seat (20) are sequentially sleeved on the support rod (2), so that one side edge of the rotating support seat (20) is parallel to one side edge of the transition plate (1); Adjust the tightening bolt (4) so ​​that the alignment frame (3) on the rotating support (20) and the stainless steel plate (100) are flush with each other, and then tighten the locking nut (5); Mounting the longitudinal drive assembly (50) on the rotating support (20); The transverse slide assembly (60) is mounted on the longitudinal drive assembly (50).

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