Cleaning and lubricating device for nuclear power plant bridge roller screw and positioning guide rail

Abstract

The application relates to a nuclear power plant bridge ball screw and positioning guide rail cleaning and lubricating device, and belongs to the technical field of ball screw cleaning of mechanical equipment, which comprises a bridge ball screw cleaning and lubricating module, a fixed retainer module and an electrical control module. The bridge ball screw cleaning and lubricating module is sleeved on the bridge ball screw and is used for rotating upward or downward along the bridge ball screw to clean and lubricate the bridge ball screw. The fixed retainer module is wrapped outside the bridge ball screw cleaning and lubricating module and is used for fixing and retaining the positioning guide rail and cleaning and lubricating the positioning guide rail by ascending or descending along the positioning guide rail. The electrical control module is used for controlling the cleaning of the bridge ball screw and the positioning guide rail when the device is in the upper position and controlling the lubrication of the bridge ball screw and the positioning guide rail when the device is in the lower position. The device realizes automatic cleaning and lubrication of the bridge ball screw and the positioning guide rail, and improves the work efficiency and safety of on-site personnel.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical equipment screw rod cleaning, in particular to a nuclear power plant bridge roller screw and positioning guide rail cleaning and lubricating device. BACKGROUND

[0002] The nuclear power plant reactor adopts roller screw transmission to control the bridge lifting to complete the refueling operation. The bridge is provided with roller screws on both sides, a total of 8, and each roller screw is about 7m long. When the bridge is at the bottom end of the roller screw, the distance from the ground is about 3m. In the shutdown state, the gamma radioactivity level of the upper area of the bridge is as high as 0.5mSv / h~2.0mSv / h. The nuclear power plant needs to maintain the roller screw and positioning guide rail of the bridge every time the reactor is refueled for overhaul, mainly to clean the old grease on the surface of the roller screw and positioning guide rail, and then apply new grease to the surface of the roller screw and positioning guide rail.

[0003] The current common practice in the nuclear power plant is that the refueling main control operator operates the bridge to descend to the bottom end of the roller screw about 3m from the ground. Then the on-site staff wear protective equipment such as lead clothes and climb to the bridge platform through the vertical ladder, and then inform the refueling main control operator to raise the bridge to the top end of the roller screw about 10m from the ground. The on-site staff clean the roller screw and positioning guide rail of the bridge with a cloth and cleaning agent until the bridge is lowered to the bottom end of the roller screw to complete the cleaning work. Then new grease is applied to the roller screw and positioning guide rail of the bridge until the bridge is raised to the top end of the roller screw to complete the lubrication work.

[0004] During the cleaning and lubrication of the roller screw and positioning guide rail of the bridge, each time the bridge is lowered or raised by a distance, it needs to be paused for a period of time so that the staff can clean or lubricate the roller screw and positioning guide rail of the bridge. It takes about 1 hour to complete the cleaning and lubrication of the roller screw and positioning guide rail of the bridge. In order to share the measurement and improve efficiency, 8 on-site staff need to work at the same time. In order to ensure safety, in addition, 1 on-site command and coordination personnel, 2 refueling operators, 1 refueling on-site operator, 2 radiation protection personnel, and 2 refueling mechanical maintenance workers are needed, a total of 16 people.

[0005] This manual cleaning and lubrication method has the following problems: high environmental radiation dose, high personnel input, long working time, more radioactive waste, high-altitude operation risk, etc. In addition, the roller screw of the bridge is not completely cleaned or lubricated by hand, and the above work needs to be repeated many times. SUMMARY

[0006] The present application aims at solving the above-mentioned problems of manual cleaning and lubrication of the bridge roller screw, and provides a nuclear power plant bridge roller screw and positioning guide rail cleaning and lubricating device, which automatically completes the cleaning and lubrication of the bridge roller screw and positioning guide rail, reduces the investment of on-site personnel, personnel radiation dose, personnel working time, reduces the generation of radioactive waste, avoids the risk of personnel high-altitude operation, and improves the working efficiency and safety of on-site personnel.

[0007] In order to achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0008] A nuclear power plant bridge roller screw and positioning guide rail cleaning and lubricating device comprises:

[0009] The bridge roller screw cleaning and lubricating module is sleeved on the bridge roller screw, is used for rotating upward or downward along the bridge roller screw, and is used for cleaning and lubricating the bridge roller screw;

[0010] The fixed retainer module is wrapped outside the bridge roller screw cleaning and lubricating module, is used for fixing and retaining the positioning guide rail, is used for rotating upward or downward along the positioning guide rail, and is used for cleaning and lubricating the positioning guide rail;

[0011] The electrical control module is used for controlling the cleaning of the bridge roller screw and positioning guide rail when the device is in the upper position, and is used for controlling the lubrication of the bridge roller screw and positioning guide rail when the device is in the lower position.

[0012] Further, the bridge roller screw cleaning and lubricating module comprises a two-half type rotating cylinder, a two-half type rotating cylinder cover, a screw cleaning assembly, a two-half type elongated pipe, a lubricating assembly A, a two-half type upper positioning ring, a two-half type lower friction ring, and a two-half type driven gear;

[0013] The two-half type rotating cylinder is cut into two halves along the center, the center is provided with a thread matched with the bridge roller screw, and the side edge is provided with a convex notch for inserting the screw cleaning assembly; the two-half type rotating cylinder is screw-connected with the two-half type driven gear and the two-half type lower friction ring below;

[0014] The two-half type rotating cylinder cover is cut into two halves along the center, and the two-half type rotating cylinder, the screw cleaning assembly, and the two-half type elongated pipe are screw-connected into an integral whole, and the lubricating assembly A is fixed at one end of the two-half type rotating cylinder cover by screw; one side of the two-half type rotating cylinder is hinge screw-connected, and the other side is screw-connected by a child-mother mechanical buckle, the integral whole can rotate circumferentially relative to the hinge shaft, and can be unfolded or closed, and the child-mother mechanical buckle can be manually locked in the position state when the equipment is circumferentially rotated to be attached;

[0015] The two half type lengthening pipe is cut into two halves along the center, and the two halves are connected by a mother and daughter fixed buckle screw; the upper outer side of one half of the two half type lengthening pipe is provided with a brush boss, and the lower contact surface with the bridge frame ball screw is provided with a screw rod grease injection boss; the upper part of the two half type lengthening pipe is connected with the two half type upper positioning ring screw.

[0016] Further, the brush boss of the two half type lengthening pipe contains an M3 copper column, a wiring terminal, a copper spring and a spring ejector pin inside the counterbore, which are sequentially installed and fixed by a spring ejector pin cover plate screw, the head of the spring ejector pin protrudes from the spring ejector pin cover plate, and the head of the spring ejector pin is compressed under pressure; the tail of the wiring terminal is connected with the wire and the oil gun driving motor of the grease injection assembly A.

[0017] Further, one side of the screw rod grease injection boss inside the two half type lengthening pipe is provided with a threaded boss matched with the thread of the bridge frame ball screw, and the threaded boss is provided with a plurality of round holes, and the outer side is provided with a sealing thread connected with the grease injection assembly A through a hose.

[0018] Further, the two half type rotating cylinder is made of non-metallic polymer material to avoid scratching the bridge frame ball screw; the non-metallic polymer material includes nylon and PEEK.

[0019] Further, the screw rod cleaning assembly includes a screw rod cleaning fixed frame, a waste grease storage box, a rubber scraper and a screw rod cleaning cotton.

[0020] The rubber scraper is installed upstream in the upward travel direction of the device, and the screw rod cleaning cotton is installed downstream in the upward travel direction of the device.

[0021] The screw rod cleaning assembly cleans the bridge frame ball screw by rubber scraper cleaning and screw rod cleaning cotton cleaning when the device is running upward.

[0022] The screw rod cleaning assembly is provided with a cleaning agent placing space, a waste grease storage space and a screw rod cleaning cotton slot inside the screw rod cleaning fixed frame; the cleaning agent placing space is used for adding cleaning agent to provide cleaning agent for the screw rod cleaning cotton, the waste grease storage space is used for inserting a replaceable waste grease storage box, and the screw rod cleaning cotton slot is used for installing the screw rod cleaning cotton.

[0023] The screw rod cleaning assembly is provided with a rubber scraper, and the back of the rubber scraper is provided with a spring A to provide a certain pre-tightening force to ensure that the rubber scraper is in interference fit with the contact surface of the bridge frame ball screw after the device is installed.

[0024] Further, the rubber scraper is made of HA 35 or below material and is provided with a thread matched with the bridge frame ball screw and not less than 2 pitches, and the left and right ends of the threaded part are provided with 4 bevels, which are sequentially downward from the inside to the outside along the upward direction of the thread.

[0025] Further, the fixed holder module includes an outer support, an upper support ring, a conductive copper ring A, a conductive copper ring B, an upper support ring pressing block, a lower support ring, a grease injection assembly B, a guide rail grease injection assembly, and a driving motor;

[0026] The electrical control module includes an electrical box and a control circuit board installed in the electrical box; the control circuit board realizes the logical control, external communication, and abnormal protection and processing of the device;

[0027] The outer support is divided into two halves along the center cut, and the inner side is connected by hinge screws, and the outer side is connected by child-mother mechanical buckle screws; the whole can rotate circumferentially relative to the hinge shaft to expand or close, and the child-mother mechanical buckle can be manually locked in position when the device is rotated circumferentially to fit;

[0028] The upper middle part of the outer support is screw-connected with the upper support ring, and the lower middle part is screw-connected with the lower support ring; the left lower side is screw-connected with the driving motor, the left upper side is screw-connected with the electrical box, and the right lower side is screw-connected with the grease injection assembly B and the guide rail grease injection assembly;

[0029] The lower part of the conductive copper ring A and the conductive copper ring B is provided with a boss, which is inserted into the upper support ring, and the boss surface is higher than the lower end surface of the upper support ring and is in frictional contact with the spring needle in the upper brush boss of the two-half type elongated tube, and the control circuit board-conductive copper ring-spring needle-oil gun driving motor of the grease injection assembly forms a current path;

[0030] The grease injection assembly B is connected with the guide rail grease injection assembly through a hose to provide grease for the guide rail grease injection assembly; the driving motor is connected with the control circuit board in the electrical box on the left upper side of the outer support to form a current path.

[0031] Further, the structure and function of the grease injection assembly A and the grease injection assembly B are exactly the same, and both include an electric oil gun, an upper end of an electric oil gun fixing frame, a lower end of the electric oil gun fixing frame, a grease injection motor adapter, an oil gun driving motor, and an oil delivery hose;

[0032] The electric oil gun includes an electric oil gun body, a grease injection pipe, a motor input shaft, a right-angle sleeve type oil pipe joint, and a vent valve; the vent valve is installed on the grease injection pipe to control the communication between the grease injection pipe and the atmosphere; the grease injection pipe is rotatably and detachably installed on the electric oil gun body; a pumping mechanism in the grease pipe is connected with the oil gun driving motor through the motor input shaft to provide motion power for the pumping mechanism; the grease injection pipe is connected with the oil delivery hose through the right-angle sleeve type oil pipe joint to deliver the pressurized grease to the target lubrication point;

[0033] Round holes are formed around the lower end of the electric oil gun fixing frame to fit the bottom of the electric oil gun; screw counterbores are formed around the upper end of the electric oil gun fixing frame, and the middle part passes through the electric oil gun to fit the upper part of the lower end of the electric oil gun fixing frame;

[0034] The one end of the grease injection motor adapter is provided with a counterbore matched with the input shaft of the electric oil gun motor and is connected with the input shaft of the electric oil gun motor, and the other end is provided with a counterbore matched with the oil gun driving motor and is connected with the oil gun driving motor.

[0035] The one end of the oil delivery hose is connected with the oil tube joint of the electric oil gun, and the other end is connected with the screw cleaning assembly or the guide rail grease injection assembly.

[0036] Further, the upper support ring is internally provided with a notch, and the conductive copper ring A and the conductive copper ring B are respectively inserted into the notch in the upper support ring and connected with the outer support screw, and the top of the screw is provided with a terminal connected with an electric wire and a control circuit board in an electrical box.

[0037] Further, the upper support ring and the lower support ring are cut along the center into two halves and are made of non-metallic polymer materials, including nylon, PEEK and DEVLON.

[0038] Further, the guide rail grease injection assembly is provided with a guide rail grease injection structure matched with the positioning guide rail, an oil scraping half ring and a guide rail cleaning cotton installation space.

[0039] The guide rail grease injection assembly is provided with an L-shaped handle and a spring, and the spring is compressed by stretching the L-shaped handle above the guide rail grease injection assembly to form a transverse displacement to realize the installation and limiting of the guide rail grease injection assembly and the positioning guide rail.

[0040] The guide rail grease injection assembly performs oil scraping half ring cleaning and guide rail cleaning cotton cleaning on the positioning guide rail when the device moves upwards.

[0041] Further, when the device is installed and started, the control circuit board controls the driving motor to rotate forward, the driving motor drives the gear to rotate the two half driven gears, so that the device climbs upwards along the bridge ball screw at a predetermined speed, and the waste grease on the surface of the bridge ball screw and the positioning guide rail is cleaned in the climbing process.

[0042] When reaching the specified height set by the program, the control circuit board controls the driving motor to rotate reversely, so that the device descends at a predetermined speed, and the new grease is re-injected on the surface of the bridge ball screw and the positioning guide rail in the descending process.

[0043] When reaching the position where the device is started, the device automatically stops, and the cleaning and grease injection work on the surface of the bridge ball screw and the positioning guide rail are completed.

[0044] Further, the control circuit board has a priority-controlled dual-path redundant power supply, supports any single power supply for the device, and also supports the redundant power supply for the device; when the device is powered by the redundant power supply, the default external 24V DC power supply is prioritized, and when the main power supply loses power due to abnormalities, the device is automatically powered by the other redundant power supply; the redundant power supply also has reverse connection protection, short circuit protection and power-on slow start function.

[0045] Further, the dual-path redundant power supply includes a polymer lithium battery 46 and an external 24V DC power supply; the polymer lithium battery 46 and the DC power supply provide dual-path input redundant power supply for the device.

[0046] Further, the lead plate 45 is distributed around the control circuit board 47 to shield or reduce the damage of the field environment radiation to the control circuit board 47.

[0047] The beneficial technical effects of the present application are:

[0048] The nuclear power plant bridge roller screw and positioning guide rail cleaning and lubricating device of the present application can completely clean or lubricate the surface of the bridge roller screw and the positioning guide rail. BRIEF DESCRIPTION OF DRAWINGS

[0049] Figure 1 It is an isometric view of an embodiment of the nuclear power plant bridge roller screw and positioning guide rail cleaning and lubricating device of the present application;

[0050] Figure 2 It is a half-expanded view of an embodiment of the nuclear power plant bridge roller screw and positioning guide rail cleaning and lubricating device of the present application;

[0051] Figure 3 It is an isometric view of an embodiment of the bridge roller screw cleaning and lubricating module;

[0052] Figure 4 It is a half-expanded view of an embodiment of the bridge roller screw cleaning and lubricating module;

[0053] Figure 5 It is a structural schematic view of an embodiment of the screw rod cleaning assembly;

[0054] Figure 6 It is a structural schematic view of an embodiment of the grease injection assembly;

[0055] Figure 7 It is a cross-sectional view of an embodiment of the fixed retainer module;

[0056] Figure 8An isometric view of one embodiment of the cage module;

[0057] Figure 9 A sectional view of one embodiment of the guide rail grease injection assembly;

[0058] Figure 10 An isometric view of one embodiment of the electrical control module;

[0059] Figure 11 A block diagram of one embodiment of the device control circuit board;

[0060] Figure 12 A block diagram of one embodiment of the device redundant power supply;

[0061] Figure 13 A block diagram of one embodiment of the device control system.

[0062] In the figure:

[0063] Two half rotary cylinder A; 2, two half rotary cylinder B; 3, two half rotary cylinder cover frame A; 4, two half rotary cylinder cover frame B; 5, two half lengthening pipe A; 6, two half lengthening pipe B;

[0064] 6-1, wire pressing plate;

[0065] 7, screw rod cleaning assembly;

[0066] 7-01, screw rod cleaning fixed frame; 7-02 waste grease storage box; 7-03 rubber scraper; 7-04 spring pad; 7-05 limiting card; 7-06 screw rod cleaning cotton; 7-07 square nut; 7-08 spring; 7-09 shaft shoulder screw; 7-10 limiting screw;

[0067] 8, grease injection assembly A;

[0068] 8-01, electric oil gun; 8-02, upper end of electric oil gun fixed frame; 8-03, lower end of electric oil gun fixed frame; 8-04, grease injection motor adapter; 8-04, oil gun driving motor; 8-06, oil delivery hose A;

[0069] 8-001, grease injection assembly B;

[0070] 8-06-01, oil delivery hose B;

[0071] 9, two half upper positioning ring; 10, two half lower friction ring; 11, two half driven gear; 12, lead screw brush; 13, lead screw brush baffle; 14, hinge; 15, primary and secondary mechanical buckle; 16, primary and secondary fixed buckle; 17, straight through sleeve type oil pipe joint; 18, spring needle; 19, copper spring; 20, M3 copper column; 21, terminal; 22, spring needle cover plate; 23, outer support A; 24, outer support B; 25, outer support lock block A; 26, outer support lock block B; 27 upper support ring; 28, conductive copper ring A; 29, conductive copper ring B; 30, external terminal pile; 31, upper support ring pressing block; 32, drive motor support; 33, lower support ring; 34, drive motor adapter; 35 pinion; 36, gear cover A; 37, gear cover B;

[0072] 38, guide rail grease injection assembly;

[0073] 38-01, guide rail grease injection seat; 38-02, guide rail grease injection; 38-03 guide rail grease injection baffle; 38-04 guide rail cleaning cotton; 38-05, L-shaped handle; 38-06, spring; 38-07, right angle sleeve type oil pipe joint B;

[0074] 39, butterfly screw; 40, drive motor; 41, bearing; 42, C-shaped key; 43, enlarged gasket; 44, electrical box; 45, lead plate; 46, polymer lithium battery; 47, control circuit board; 48, start button; 49, control handle; 50, LED lamp. DETAILED DESCRIPTION

[0075] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application.

[0076] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily all directed to the same embodiment, or to a single alternative embodiment. It is explicitly contemplated that embodiments described herein can be combined with each other.

[0077] In the description of the present application, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection" and the like should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium. The specific meanings of the above terms can be understood according to the specific circumstances for those of ordinary skill in the art.

[0078] The terms "left end", "right end", "upper", "lower", "outer side", "inner side" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0079] The terms "A", "B" and the like are only for distinguishing similar attributes of elements, and do not indicate or imply relative importance or a specific order.

[0080] The terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, in addition to including the listed elements, other elements not explicitly listed can also be included.

[0081] The technical solutions of the present application are described below in conjunction with the drawings and specific embodiments.

[0082] Referring to Figures 1-13 The embodiment provides a nuclear power plant bridge roller screw and positioning guide rail cleaning and lubricating device, which comprises a bridge roller screw cleaning and lubricating module, a fixed retainer module and an electrical control module.

[0083] In the embodiment, the bridge roller screw cleaning and lubricating module comprises a two-piece rotary cylinder A 1, a two-piece rotary cylinder B 2, a two-piece rotary cylinder cover A 3, a two-piece rotary cylinder cover B 4, a two-piece lengthened pipe A 5, a two-piece lengthened pipe B 6, a screw cleaning assembly 7, a grease injection assembly A 8, a two-piece upper positioning ring 9, a two-piece lower friction ring 10, a two-piece driven gear 11, a screw brush 12, a screw brush baffle 13, a hinge 14, a primary and secondary mechanical buckle 15, a primary and secondary fixed buckle 16, a straight-through clasp sleeve oil pipe joint 17, a spring ejector pin 18, a copper spring 19, an M3 copper column 20, a wiring terminal 21 and a spring ejector pin cover plate 22.

[0084] Two half rotary cylinder A 1 and two half rotary cylinder B 2 is an integral along the center cutting into two halves, four corners are provided with screw through hole and the center is provided with more than 4 teeth thread matched with bridge frame ball screw, the lower side is provided with annular groove surface; The upper and lower ends of the screw through hole are provided with square recess for limiting installation of the screw rod cleaning assembly 7; The bottom surface of the annular groove surface is provided with a square boss, and the four corners of the square boss are provided with through holes; The left end surface of the two half rotary cylinder A 1 is provided with a convex notch;

[0085] Two half rotary cylinder cover frame A 3 and two half rotary cylinder cover frame B 4 are an integral along the center cutting into two halves, the upper and lower surfaces are provided with screw holes around, respectively connected with two half rotary cylinder A 1 and two half rotary cylinder B 2; The outer side is connected by hinge 14 screw, the inner side is connected by sub-mother mechanical buckle 15 screw; The hinge 14 can rotate around the hinge shaft, and the sub-mother mechanical buckle 15 can be manually locked in position when the hinge 14 is axially rotated to fit; The left end of the two half rotary cylinder cover frame A 3 is provided with a screw rod cleaning assembly 7 support platform, and the right end of the two half rotary cylinder cover frame B 4 is provided with a grease injection assembly A 8 mounting platform, and the surface of the grease injection assembly A 8 mounting platform is provided with a connecting screw hole;

[0086] Two half length pipe A 5 and two half length pipe B 6 are an integral along the center cutting into two halves, the upper side of the joint of the two halves is provided with a limiting boss, and the inner side of the upper side of the joint of the two halves is provided with a sub-mother fixed buckle 16, and the surface of the limiting boss is provided with a threaded hole connected with the sub-mother fixed buckle 16 by screw; The upper and lower sides of the two half length pipe A 5 and the two half length pipe B 6 are provided with flange bosses, the upper flange bosses are respectively connected with two half upper positioning rings 9 by screw, and the lower flange bosses are respectively connected with two half rotary cylinder cover frame A 3 and two half rotary cylinder cover frame B 4 by screw;

[0087] The lower right end of the two half length pipe B 6 is provided with a screw rod grease injection boss; The contact surface of the screw rod grease injection boss and the bridge frame ball screw is provided with a threaded boss matched with the thread of the bridge frame ball screw and provided with a plurality of round holes; The outer side of the screw rod grease injection boss is provided with a grease injection hole connected with a straight-through sleeve type oil pipe joint 17 and communicated with the threaded boss round hole; The inner side of the screw rod grease injection boss of the two half length pipe B 6 is provided with a screw rod brush notch, the screw rod brush notch is not communicated with the grease injection hole and the right end is provided with a screw rod brush baffle notch, the screw rod brush notch is inserted into the screw rod brush 12, and the screw rod brush baffle notch is inserted into the screw rod brush baffle 13 to limit the displacement of the screw rod brush 12;

[0088] The right end of the two half lengthened pipe B 6 is provided with a brush boss, the upper surface of the brush boss is provided with a threaded hole and four counterbores, the outer lower end of the brush boss counterbores is provided with a notch for inserting the head of the terminal 21; after the terminal 21 is inserted into the side notch, the M3 copper column 20, copper spring 19 and spring thimble 18 are sequentially inserted into the brush boss counterbores, and the top is pressed tightly with the spring thimble cover plate 22 and then fixed with a screw;

[0089] The small end of the M3 copper column 20 is threaded, and the large end is a cylinder with an outer diameter not greater than the inner diameter of the brush boss counterbores; the small end of the M3 copper column 20 is inserted into the brush boss counterbores, passes through the head of the terminal 21 and is connected to the brush boss below through a nut;

[0090] One end of the copper spring 19 is inserted into the brush boss counterbores of the M3 copper column 20 and contacts the large end cylindrical surface of the M3 copper column 20, and the other end surface contacts the spring thimble 18;

[0091] The spring thimble 18 is a cylinder with an outer diameter not greater than the inner diameter of the brush boss counterbores, and the upper and lower ends are provided with cylindrical bosses that can be inserted into the inner circle of the copper spring 19;

[0092] The spring thimble cover plate 22 is provided with four counterbores and screw holes, and the small round of the counterbores only allows the cylindrical boss of the spring thimble 18 head to pass through;

[0093] The terminal 21 is a connecting piece for connecting the cable to the electrical equipment, the head connecting end is a thin circular ring fixed with a screw, and the tail end can be inserted into the stripped cable to complete the connection by pressing with pliers; after the tail end of the terminal 21 leads out the cable, it is connected in communication with the oil gun driving motor 8-05 in the grease injection assembly A 8 through the three wire pressing plates 6-1 below the two half lengthened pipe B 6;

[0094] The two half lower friction ring 10 is cut into two halves along the center, and the lower periphery is provided with threaded holes respectively matched with the upper surfaces of the square bosses below the two half rotary cylinder A 1 and the two half rotary cylinder B 2;

[0095] The two half driven gear 11 is cut into two halves along the center, and the upper surface is provided with notches and screw holes matched with the square bosses below the two half rotary cylinder A 1 and the two half rotary cylinder B 2;

[0096] The square bosses below the two half rotary cylinder A 1 and the two half rotary cylinder B 2 are respectively embedded into the notches on the upper surface of the two half driven gear 11, the upper surfaces of the square bosses below the two half rotary cylinder A 1 and the two half rotary cylinder B 2 are matched with the two half lower friction ring 10, and the screws are inserted into the screw holes on the lower surface of the two half driven gear 11, pass through the screw holes of the square bosses below the two half rotary cylinder A 1 and the two half rotary cylinder B 2, and are tightly connected with the threaded holes of the two half lower friction ring 10.

[0097] In this embodiment, the screw rod cleaning assembly 7 includes a screw rod cleaning fixed frame 7-01, a waste grease storage box 7-02, a rubber scraper 7-03, a spring pad 7-04, a limiting card 7-05, a screw rod cleaning cotton 7-06, a square nut 7-07, a spring A 7-08, a shaft shoulder screw 7-09, and a limiting screw 7-10;

[0098] The right end middle part of the screw rod cleaning fixed frame 7-01 is provided with a convex protrusion matched with the convex notch on the left end surface of the two-half rotary cylinder A 1, and the right end four corners are provided with square-shaped protrusions extending outwards; the convex protrusion on the right end middle part of the screw rod cleaning fixed frame 7-01 is embedded in the convex notch on the left end surface of the two-half rotary cylinder A 1, and the square-shaped protrusions on the right end four corners are limited by the square-shaped recesses on the upper and lower ends of the screw through hole of the two-half rotary cylinder A 1;

[0099] The center of the convex protrusion of the screw rod cleaning fixed frame 7-01 is provided with a notch matched with the rubber scraper 7-03, and the opposite side is provided with a plurality of spring positioning protrusions for positioning the spring A 7-08;

[0100] The middle part of the spring positioning protrusions on the opposite side of the notch matched with the rubber scraper 7-03 of the screw rod cleaning fixed frame 7-01 is provided with a counterbore for the shaft shoulder screw 7-09 to pass through; the lower part of the convex protrusion of the screw rod cleaning fixed frame 7-01 is provided with a notch matched with the screw rod cleaning cotton 7-06; the inside of the screw rod cleaning fixed frame 7-01 is provided with a cleaning agent placing space, and the top is provided with two cleaning agent injection holes; the cleaning agent placing space inside the screw rod cleaning fixed frame 7-01 is located on the upper end of the notch of the screw rod cleaning cotton 7-06 and is distributed around the notch matched with the rubber scraper 7-03; the bottom of the cleaning agent placing space inside the screw rod cleaning fixed frame 7-01 is communicated with the top of the notch of the screw rod cleaning cotton 7-06, so that the added cleaning agent can flow into the soaked screw rod cleaning cotton 7-06; the lower part of the cleaning agent placing space of the screw rod cleaning fixed frame 7-01 is provided with a waste grease storage box 7-02 installation notch, and the waste grease storage box 7-02 installation notch is communicated with the notch of the rubber scraper 7-03;

[0101] The limiting card 7-05 is connected to the side of the screw rod cleaning fixed frame 7-01 through the limiting screw 7-10, and the limiting card 7-05 can rotate circumferentially along the limiting screw 7-10; after the waste grease storage box 7-02 is inserted into the installation notch in the screw rod cleaning fixed frame 7-01, the transverse displacement of the waste grease storage box 7-02 can be limited by rotating the limiting card 7-05;

[0102] The inner wall surface of the rubber scraper 7-03 is provided with threads matched with the bridge frame ball screw and not less than 2 pitches; the left and right ends of the inner thread part of the rubber scraper 7-03 are provided with 4 oblique notches, which are sequentially downward from the inside to the outside along the upward direction of the thread; the inner part close to the outer wall surface of the rubber scraper 7-03 is provided with a through notch from the upper end to the lower end, and the middle part of the through notch is provided with a circular hole;

[0103] The surface of the spring pad plate 7-04 is provided with a notch matched with the oblique notch of the rubber scraper 7-03, and the outer side is provided with a plurality of spring positioning bosses for positioning the spring A 7-08; the surface center of the spring pad plate 7-04 is provided with a circular hole corresponding to the through slot middle circular hole of the rubber scraper 7-03;

[0104] The through slot of the rubber scraper 7-03 is inlaid with a square nut 7-07, the center threaded hole of the square nut 7-07 is opposite to the through slot middle circular hole of the rubber scraper 7-03; the outer side of the rubber scraper 7-03 is in contact with the surface of the spring pad plate 7-04, and the center circular hole of the spring pad plate 7-04 is opposite to the through slot middle circular hole of the rubber scraper 7-03; the spring A 7-08 is inserted into the spring positioning boss on the surface of the spring pad plate 7-04;

[0105] The combination of the rubber scraper 7-03, the square nut 7-07, the spring pad plate 7-04 and the spring A 7-08 is inlaid in the slot of the lead screw cleaning fixed frame 7-01 matched with the rubber scraper 7-03, wherein the other end face of the spring 7-08 is inserted into the spring positioning boss in the lead screw cleaning fixed frame 7-01 opposite to the slot;

[0106] The shaft shoulder screw 7-09 is sequentially threaded through the spring positioning boss middle counterbore in the lead screw cleaning fixed frame 7-01, the center circular hole of the spring pad plate 7-04, the center circular hole of the rubber scraper 7-03 and the square nut 7-07 inside the rubber scraper 7-03.

[0107] In this embodiment, the grease injection assembly A 8 includes an electric oil gun 8-01, an electric oil gun fixing frame upper end 8-02, an electric oil gun fixing frame lower end 8-03, a grease injection motor adapter 8-04, an oil gun driving motor 8-05, and an oil delivery hose A 8-06;

[0108] The electric oil gun 8-01 comprises an electric oil gun body, a grease injection pipe, a handle rod, a motor input shaft, a right-angle clamping sleeve type oil pipe joint and a vent valve; the vent valve is installed on the grease injection pipe to control the communication between the grease injection pipe and the atmosphere; the grease injection pipe is rotatably and detachably installed on the electric oil gun body; the handle rod is connected with a pumping mechanism in the grease injection pipe, and the pumping mechanism is driven to move by the handle rod; the pumping mechanism in the grease injection pipe is connected with an oil gun driving motor 8-05 through the motor input shaft to provide power for the pumping mechanism; the grease injection pipe is connected with an oil delivery hose A 8-06 through the right-angle clamping sleeve type oil pipe joint to deliver the pressurized grease to a target lubrication point; the working principle of the electric oil gun 8-01 is as follows: the grease injection pipe is detached from the electric oil gun body by rotating, the vent valve is opened, the head of the grease injection pipe is inserted into an external grease barrel, the handle rod is pulled outward to fill the grease injection pipe with grease, then the grease injection pipe is installed on the electric oil gun body, the vent valve is closed, the handle rod is pressed to the bottom after the grease injection pipe is screwed, the oil gun driving motor 8-05 provides power for the electric oil gun 8-01, and the electric oil gun 8-01 pressurizes and delivers the grease in the grease injection pipe through the right-angle clamping sleeve type oil pipe joint;

[0109] The lower end of the electric oil gun fixing frame 8-03 is provided with a circular hole around the periphery, which is matched with the bottom of the electric oil gun 8-01;

[0110] The upper end of the electric oil gun fixing frame 8-02 is provided with screw counterbores around the periphery, and the middle part penetrates the electric oil gun 8-01 and is matched with the upper part of the lower end 8-02 of the electric oil gun fixing frame;

[0111] The grease injection motor adapter 8-04 is provided with a counterbore at one end, which is matched with the motor input shaft of the electric oil gun 8-01 and is connected with the motor input shaft of the electric oil gun 8-01, and is provided with a counterbore at the other end, which is matched with the oil gun driving motor 8-05 and is connected with the oil gun driving motor 8-05;

[0112] The oil gun driving motor 8-05 is a stepping motor, and the output speed can be adjusted by adjusting the current and voltage.

[0113] One end of the oil delivery hose A 8-06 is connected with the right-angle clamping sleeve type oil pipe joint of the electric oil gun 8-01, and the other end is connected with the straight-through clamping sleeve type oil pipe joint 17 of the straight side of the two-half type extension pipe A 2 screw rod grease injection boss; the clamping sleeve type joint connection principle is that the hose is inserted into the clamping sleeve, the clamping sleeve nut is locked, the clamping sleeve is resisted, and the pipe is cut to form a seal.

[0114] When the oil gun driving motor is started, the electric oil gun delivers the grease from the oil delivery hose to the inside of the two-half type extension pipe screw rod grease injection boss through the thread boss circular hole on the surface of the bridge roller screw.

[0115] In this embodiment, the fixed holder module includes outer support A 23, outer support B 24, outer support lock block A 25, outer support lock block B 26, upper support ring 27, conductive copper ring A 28, conductive copper ring B 29, external wire pile 30, upper support ring pressing block 31, drive motor support 32, lower support ring 33, drive motor adapter 34, gear 35, gear cover A 36, gear cover B 37, grease injection assembly B 8-001, guide rail grease injection assembly 38, wiring terminal 21, butterfly screw 39, drive motor 40, bearing 41, C key 42 and enlarged washer 43;

[0116] The outer support A 23 and the outer support B 24 are cut in half along the center to form a whole, the inner side is connected by hinge B 14 screw, the outer side is connected by sub-mechanical buckle B 15 screw; the hinge B 14 can rotate circumferentially relative to the hinge shaft, and the sub-mechanical buckle B 15 can be manually locked in position when it is axially rotated to fit;

[0117] The outer support A 23 and the outer support B 24 are connected and have large concentric circular holes in the upper and lower center, and screw holes are distributed around the two circular holes; the outer support A 23 and the outer support B 24 are provided with screw holes for installing the gear cover A 36 and the gear cover B 37 at the lower edge position;

[0118] The outer support A 23 left end lower semicircular convex surface is provided with a drive motor 40 installation platform, and the drive motor 40 installation platform is provided with a circular hole and a screw hole for installing the drive motor support 32; the outer support A 23 left end side is provided with screw holes for installing the electrical control module; the outer support B 24 right end lower square convex surface is provided with a grease injection assembly B 8-001 and a guide rail grease injection assembly 38 installation platform;

[0119] The outer support lock block A 25 and the outer support lock block B 26 are connected to the outer side upper and lower ends of the outer support A 23 and the outer support B 24 by screws respectively; the outer support lock block A 25 and the outer support lock block B 26 are fixed by butterfly screws 39 after being connected in the middle, which locks the inner and outer sides of the outer support A 23 and the outer support B 24 to make the upper and lower connection parts completely flush;

[0120] The conductive copper ring A 28 and the conductive copper ring B 29 each have four, which are semicircular rings with increasing radii; the lower surface of the conductive copper ring A 28 and the conductive copper ring B 29 is convex, the upper surface of the conductive copper ring A 28 is provided with screw holes in the direction of 270°, and the upper surface of the conductive copper ring B 29 is provided with screw holes in the direction of 90°; the connecting end surface of the conductive copper ring A 28 is convex, and the connecting end surface of the conductive copper ring B 29 is concave, and the connecting end concave-convex surface is fitted after splicing to form four closed loops with increasing diameters;

[0121] The upper support ring 27 is cut along the center into two halves, and the lower part is provided with notches for inserting the conductive copper ring A 28 and the conductive copper ring B 29. The corresponding notches in the upper part are provided with four protrusions in sequence, and the protrusions in the center are provided with through holes communicating with the notches in the bottom. The protrusions in the upper part of the upper support ring 27 can be inserted into the corresponding circular holes opened in the upper part of the outer support A 23 and the outer support B 24, forming the positioning of the upper support ring 27. The upper surface of the upper support ring 27 is provided with threaded holes, one half of the bottom notches are inserted into the four conductive copper rings A 28 and the upper part of the outer support A 23 is connected by screws, and the other half of the bottom notches are inserted into the four conductive copper rings B 29 and the upper part of the outer support B 24 is connected by screws;

[0122] The upper support ring pressing block 31 is provided with four screw counterbores in the upper part, and is attached to the outer support B 24 in the lower part. The four screw counterbores are concentric with the corresponding circular holes opened in the outer support B 24, and are concentric with the protrusions in the center of the notches of the upper support ring 27. The screws pass through the upper support ring pressing block 31, the outer support B 24, the upper support ring 27 and the conductive copper ring B 29 to be screwed;

[0123] The outer terminal post 30 is of L-shaped structure, and the left end of the upper part is provided with four screw counterbores, and the right end is provided with two threaded holes. The lower part is attached to the upper part of the outer support A 23. The inner part of the screw counterbores of the outer terminal post 30 is provided with four notches for inserting the terminal, and the notches communicate with the screw counterbores in the upper part of the outer terminal post 30. The inner part of the outer terminal post 30 is provided with a wire notch, which communicates with the notch of the terminal 21. The right end of the outer terminal post 30 is provided with four screw counterbores, which are concentric with the corresponding circular holes opened in the outer support A 23, and are concentric with the through holes of the protrusions in the center of the notches of the upper support ring 27. The copper screws pass through the outer terminal post 30, the head of the terminal 21, the outer support A 23, the upper support ring 27 and the conductive copper ring A 28 to be screwed. The left end of the outer terminal post 30 is connected with the outer support A 23 by screws;

[0124] The lower support ring 33 is cut along the center into two halves, and the upper part is provided with a positioning protrusion which is consistent with the inner diameter of the large circular hole in the lower part of the outer support A 23 and the outer support B 24. The lower part is a tapered plane with good smoothness. The periphery of the lower support ring 33 is provided with threaded holes, which are connected with the lower part of the outer support A 23 and the outer support B 24 by screws respectively;

[0125] The driving motor support 32 is provided with a circular hole in the center, which matches the outer diameter of the bearing 41. The inner part of the circular hole is provided with a bearing 41 limiting protrusion, and the periphery of the circular hole is provided with screw holes matched with the driving motor 40;

[0126] The lower part of the driving motor support 32 is inserted into the semicircular protruding surface circular hole in the left end of the lower part of the outer support A 23. The output shaft of the driving motor 40 passes through the center circular hole of the driving motor support 32 and is attached to the motor support 32. It is fixed on the left end platform of the outer support A 23 by screws and nuts;

[0127] The bearing 41 is inserted into the center hole of the driving motor support 32;

[0128] The lower cylindrical column of the driving motor adapter 34 is inserted into the hole of the bearing 41, and the upper cylindrical column is in contact with the upper part of the bearing 41 to form a longitudinal limit. The center of the driving motor adapter 34 is provided with a circular hole and a key groove, which is connected with the output shaft of the driving motor 40 through the C-shaped key 42. The outer side is provided with a key groove, which is connected with the gear 35 through the C-shaped key 42;

[0129] The driving motor 40 is a step motor, and the output speed can be adjusted by adjusting the current and voltage. The output shaft of the driving motor 40 is provided with a key groove, and the lower part is provided with a threaded hole;

[0130] The gear 35 is provided with a circular hole in the center, and a key groove is formed in the circular hole. The lower center hole of the gear 35 is provided with an enlarged gasket 43 slot circle, and the outer diameter of the slot circle is greater than the outer diameter of the lower cylindrical column of the driving motor adapter 34. The thickness of the slot is consistent with the enlarged gasket 43;

[0131] The center of the enlarged gasket 43 is provided with a screw hole, which is matched with the enlarged gasket 43 slot circle below the gear 35. The screw passes through the center screw hole of the enlarged gasket 43 and is connected with the output shaft of the driving motor 40 through the threaded hole;

[0132] The gear cover 36 is cut along the center to divide into two halves, and the corners are provided with support bosses, which are respectively matched with the lower end faces of the outer supports A 23 and B 24, and are connected through screws;

[0133] The grease injection assembly B 8-001 is placed on the square platform below the right end of the outer support B 24, and is connected with the outer support B 24 through screws and nuts;

[0134] In this embodiment, the guide rail grease injection assembly 38 includes a guide rail grease injection seat 38-01, a guide rail grease injection piece 38-02, a guide rail grease injection baffle 38-03, a guide rail cleaning cotton 38-04, an L-shaped handle 38-05, a spring B 38-06, a right-angle clamping sleeve type oil pipe joint B 38-07 and an oil delivery hose B 8-06-1;

[0135] The middle part of the guide rail grease injection seat 38-01 is provided with a convex structure hole for the left and right sliding of the guide rail grease injection piece 38-02. The right end of the convex structure hole is provided with an opening to form a limiting boss. The left end and the outer side are both provided with circular holes, and the four corners are all provided with screw holes;

[0136] The left end of the guide rail lubricating member 38-02 is provided with positioning bosses on the inner side and the outer side, which can be embedded in the convex structure hole in the middle of the guide rail lubricating seat 38-01 and can slide inside; when sliding to the right end of the guide rail lubricating seat 38-01, the positioning bosses of the guide rail lubricating member 38-02 collide with the limiting bosses of the guide rail lubricating seat 38-01 to form transverse limiting; the left end of the guide rail lubricating member 38-02 is provided with two annular bosses, the annular bosses can be inserted into the spring B 38-06 and slide in the circular hole at the left end of the guide rail lubricating seat 38-01;

[0137] The right end of the guide rail lubricating member 38-02 is divided into three spaces from top to bottom:

[0138] The upper space is a guide rail lubricating space, the right end of the contact surface with the positioning guide rail is a ring-shaped closed surface, the ring-shaped closed surface is provided with a plurality of circular holes communicating with the guide rail lubricating space, and the inner diameter of the ring-shaped closed surface is greater than the outer diameter of the positioning guide rail; the left side of the guide rail lubricating space is provided with a circular boss, and the center of the circular boss is provided with a sealing threaded hole communicating with the guide rail lubricating space;

[0139] The middle space is a guide rail waste lubricating oil recycling space, and the contact surface with the positioning guide rail is a ring-shaped open surface, which is a tapered surface inside, forming an oil scraping half ring, the ring-shaped open position communicates with the guide rail waste lubricating oil recycling space, and the inner diameter of the ring-shaped open surface is not less than the outer diameter of the positioning guide rail, which is an interference fit;

[0140] The lower space is a guide rail cleaning cotton 38-04 installation space, which is provided with a guide rail cleaning cotton 38-04 installation slot, and can accommodate the guide rail cleaning cotton 38-04 inserted therein;

[0141] The upper space, the middle space and the lower space of the guide rail lubricating member 38-02 are not communicated with each other; the screw counterbore below the guide rail lubricating member 38-02 is connected with the upper L-shaped handle screw, and the screw counterbore is not communicated with the upper space, the middle space and the lower space;

[0142] The circular boss sealing threaded hole at the left end of the guide rail lubricating member 38-02 is threadedly connected with the right angle sleeve type oil pipe joint B 38-07; the right angle sleeve type oil pipe joint B 38-07 is a right angle shape, one right angle end is a tapered external thread, and the other end is a sleeve type joint; one end of the oil delivery hose B 8-06-1 is inserted into the sleeve, the locking joint nut is locked, and a sealed connection is formed; the other end of the oil delivery hose B 8-06-1 is connected with the lubricating assembly B 8-001 at the right end of the outer support B 24;

[0143] The guide rail lubricating baffle 38-03 is provided with screw holes matched with the guide rail lubricating seat 38-01 at four corners, and a convex structure hole matched with the guide rail lubricating seat 38-01 is arranged in the middle;

[0144] The guide rail grease injection assembly 38 is placed below the platform at the right end of the outer support B 24 and is connected with the outer support B 24 through screws and nuts; after connection, one end of the spring B 38-06 is in contact with the outer surface of the grease injection assembly B 8-001, the guide rail grease injection part 38-02 is slid to the left by pulling the L-shaped handle 38-05 to the left, the spring B 38-06 is compressed, and after the L-shaped handle 38-05 is released, the spring B 38-06 is reset; the guide rail grease injection part 38-02 is slid to the right to the right end limit of the guide rail grease injection baffle 38-03.

[0145] The grease injection assembly B 8-001 has the same structure and function as the grease injection assembly A 8, and will not be described again.

[0146] In this embodiment, the electrical control module includes an electrical box 44, a lead plate 45, a polymer lithium battery 46, a control circuit board 47, a start button 48, a control handle 49, and an LED lamp 50.

[0147] The electrical box 44 is provided with a mounting slot for the lead plate 45, the polymer lithium battery 46, the control circuit board 47, the start button 48, and the LED lamp 50, and is provided with screw holes around, which are connected with the screws and nuts at the upper left end of the outer support A 23.

[0148] The control circuit board 47 is provided with a DC power supply interface, a battery interface, a stepper motor interface, a remote controller interface, a start button interface, three LED indicator lamp interfaces, and two limit switch interfaces; the control circuit board 47 realizes the logic control, external communication, and abnormality processing of the device; the DC power supply interface of the control circuit board 47 is connected with an external backup 24V DC power supply, and the battery interface is connected with the polymer lithium battery 46; the two limit switch interfaces are connected with external limit switches as backup;

[0149] The lead plate 45 and the control circuit board 47 are inserted into the corresponding mounting slots of the electrical box 44, and the lead plate 45 is installed around the control circuit board 47 to prevent the control circuit board 47 from being irradiated and failing in the field;

[0150] The lithium polymer battery 46 is inserted into the corresponding mounting slot of the electrical box 44 and connected with the battery interface of the control circuit board 47 to provide redundant power input for the device;

[0151] The start button 48 is inserted into the corresponding mounting slot of the electrical box 44 and connected with the start button interface of the control circuit board 47 to realize the start of the device.

[0152] The control handle 49 is connected with the remote controller interface of the control circuit board 47 to realize the remote motion control and parameter information display of the device.

[0153] The LED lamp 50 is connected with the LED indicator lamp interface of the control circuit board 47 to realize the normal operation state and fault information display of the device.

[0154] The device for cleaning and lubricating the bridge ball screw and positioning guide rail of the nuclear power plant comprises the following steps:

[0155] The bridge ball screw cleaning and lubricating module is filled with grease through the electric oil gun in the grease injection assembly of the fixed retainer module, and then the inside of the screw cleaning fixed frame 7-01 is filled with cleaning liquid through the two solvent injection holes at the top of the screw cleaning fixed frame in the screw cleaning assembly 7.

[0156] The child-mother mechanical buckle and the child-mother fixed buckle in the bridge ball screw cleaning and lubricating module are opened, and after being unfolded, the bridge ball screw cleaning and lubricating module is sleeved on the bridge ball screw, and then the child-mother mechanical buckle and the child-mother fixed buckle are closed.

[0157] The butterfly screw 39 and the child-mother mechanical buckle in the fixed retainer module are opened, and after being unfolded, the fixed retainer module is wrapped outside the bridge ball screw cleaning and lubricating module, and then the child-mother mechanical buckle is closed, and the butterfly screws 39 at the top and bottom are tightened; the L-shaped handle 38-05 is pulled, and the rotating device is rotated to make the guide rail injection part 38-02 ring groove in the guide rail injection assembly 38 clamped in the bridge ball screw positioning guide rail.

[0158] At this time, the start button is pressed, and after the device is started, it is divided into two processes of upward cleaning and downward injection;

[0159] In the upward cleaning process, the control circuit board 47 drives the driving motor 40 to rotate in the forward direction, so that the device climbs upward at a predetermined speed, and the waste grease on the surface of the bridge ball screw is cleaned in the climbing process.

[0160] When reaching the specified height set by the program, the control circuit board 47 drives the driving motor 40 to rotate in the reverse direction, so that the device descends at a predetermined speed, and new grease is re-injected on the surface of the bridge ball screw and the positioning guide rail in the descending process.

[0161] When reaching the position when the device is started, the device automatically stops, and the cleaning and injection work of the bridge ball screw and the positioning guide rail are completed.

[0162] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as limiting the scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the scope of protection of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A cleaning and lubrication device for ball screws and positioning guide rails in nuclear power plant bridges, characterized in that, include: The cable tray ball screw cleaning and lubrication module is fitted onto the cable tray ball screw and is used to clean and lubricate the cable tray ball screw as it rotates up or down. The retainer module, which wraps around the outer side of the ball screw cleaning and lubrication module of the cable tray, is used to fix and retain the positioning guide rail; it moves up or down along the positioning guide rail to clean and grease it. The electrical control module is used to clean the upper part of the control device, such as the ball screw and positioning guide rail of the cable tray, and to grease the lower part of the control device, such as the ball screw and positioning guide rail of the cable tray. The bridge frame ball screw cleaning and lubrication module includes a two-half rotating cylinder, a two-half rotating cylinder covering frame, a screw cleaning assembly (7), a two-half extension tube, a grease injection assembly A (8), a two-half upper positioning ring (9), a two-half lower friction ring (10), and a two-half driven gear (11). The two-half rotating cylinder is cut into two halves along the center. The center is provided with a thread that matches the bridge ball screw, and the side is provided with a convex groove for the screw cleaning assembly (7) to be inserted. The two-half rotating cylinder is connected to the two-half driven gear (11) and the two-half lower friction ring (10) by screws. The two-half rotating cylinder covering frame is cut into two halves along the center. The two halves of the rotating cylinder, the screw cleaning assembly (7), and the two halves of the extended pipe screw are connected into a whole. The grease injection assembly A (8) is fixed to one end of the two-half rotating cylinder covering frame with screws. The two halves of the rotating cylinder are connected by hinge screws on one side and by female and male mechanical buckle screws on the other side. The whole can rotate circumferentially relative to the hinge axis, open or close. The female and male mechanical buckle can be manually locked in the position when the equipment rotates circumferentially to fit. The two-half extension tube is cut into two halves along the center and the two halves are connected by a male and female fixing buckle screw; a brush boss is provided on the outer side of the upper half of the two-half extension tube, and a screw grease injection boss is provided on the contact surface with the ball screw of the bridge frame below; the upper part of the two-half extension tube is connected to the upper positioning ring (9) of the two-half extension tube by screws. The fixed retainer module includes an outer bracket, an upper support ring (27), a conductive copper ring A (28), a conductive copper ring B (29), an upper support ring pressure block (31), a lower support ring (33), a grease injection assembly B (8-001), a guide rail grease injection assembly (38), and a drive motor (40). The electrical control module includes an electrical box (44) and a control circuit board (47) installed inside the electrical box (44); the control circuit board (47) realizes the logic control, external communication and abnormal protection and processing of the device; The outer bracket is cut into two halves along the center, with the inner side connected by hinge screws and the outer side connected by a male and female mechanical snap-fit ​​screw. The whole can rotate circumferentially relative to the hinge axis, opening or closing. The male and female mechanical snap-fit ​​can be manually locked in the position when the equipment rotates circumferentially to fit. The upper middle part of the outer bracket is screwed to the upper support ring (27), and the lower middle part is screwed to the lower support ring (33); the lower left side is screwed to the drive motor (40), the upper left side is screwed to the electrical box (44), and the lower right side is screwed to the grease injection assembly B (8-001) and the guide rail grease injection assembly (38). Both conductive copper ring A (28) and conductive copper ring B (29) have bosses at the bottom. After the upper support ring (27) is inserted, the surface of the boss is higher than the lower end face of the upper support ring (27) and makes frictional contact with the spring pin in the brush boss above the two-half extended tube. The oil gun drive motor of the control circuit board (47) - conductive copper ring - spring pin - grease injection assembly forms a current path. The grease injection assembly B (8-001) is connected to the guide rail grease injection assembly (38) via a hose to provide grease to the guide rail grease injection assembly (38); the drive motor (40) is connected to the control circuit board (47) in the electrical box (44) on the upper left side of the outer bracket to form a current path.

2. The cleaning and lubrication device for the ball screw and positioning guide rail of the nuclear power plant bridge as described in claim 1, characterized in that, The two-half extended tube brush boss countersunk hole contains an M3 copper pillar, a terminal block, a copper spring and a spring pin. After being installed in sequence, they are fixed by the spring pin cover plate screw. The head of the spring pin is higher than the spring pin cover plate. The head of the spring pin is compressed after being subjected to pressure. The end of the terminal block is connected to the wire and connected to the oil gun drive motor of the grease injection assembly A (8).

3. The cleaning and lubrication device for the ball screw and positioning guide rail of the nuclear power plant bridge as described in claim 1, characterized in that, The two-part extended tube screw grease injection boss has a threaded boss on one side that matches the thread of the bridge ball screw and has several round holes. The outer side has a sealing thread that connects to the grease injection assembly A (8) through a hose.

4. The cleaning and lubrication device for the ball screw and positioning guide rail of the nuclear power plant bridge as described in claim 1, characterized in that, The lead screw cleaning assembly (7) includes a lead screw cleaning bracket (7-01), a waste grease storage box (7-02), a rubber scraper (7-03), and a lead screw cleaning cotton (7-06). The rubber scraper (7-03) is installed upstream in the upward direction of the device, and the screw cleaning cotton (7-06) is installed downstream in the upward direction of the device. The ball screw cleaning assembly (7) cleans the bridge ball screw with a rubber scraper and a ball screw cleaning cotton when the device moves upward; The screw cleaning bracket (7-01) has a cleaning agent placement space, a waste grease storage space, and a screw cleaning cotton slot inside. The cleaning agent placement space is used to add cleaning agent to provide cleaning agent to the screw cleaning cotton (7-06). The waste grease storage space is used to insert a replaceable waste grease storage box (7-02). The screw cleaning cotton slot is used to install the screw cleaning cotton (7-06). The ball screw cleaning assembly (7) is equipped with a rubber scraper (7-03) inside. A spring A (7-08) is provided on the back of the rubber scraper (7-03) to provide a certain preload, ensuring that the rubber scraper (7-03) and the ball screw of the bridge frame are interference-fitted after the device is installed.

5. The cleaning and lubrication device for the ball screw and positioning guide rail of the nuclear power plant bridge as described in claim 1, characterized in that, The two-half rotating cylinder is made of non-metallic polymer material; the rubber scraper (7-03) is made of HA 35 or less and is provided with a thread that matches the bridge ball screw and has no less than 2 pitches. The threaded part has 4 oblique cuts at the left and right ends, and the oblique cuts go from the inside to the outside along the upward direction of the thread.

6. The cleaning and lubrication device for the ball screw and positioning guide rail of the nuclear power plant bridge as described in claim 1, characterized in that, The structure and function of grease injection assembly A (8) and grease injection assembly B (8-001) are exactly the same. Both include an electric oil gun, an upper end of an electric oil gun holder, a lower end of an electric oil gun holder, a grease injection motor adapter, an oil gun drive motor, and an oil delivery hose. The electric grease gun includes a main body, a grease injection tube, a motor input shaft, a right-angle compression fitting grease pipe connector, and a vent valve. The vent valve on the grease injection tube controls its connection to the atmosphere. The grease injection tube is rotatably and detachably mounted on the main body of the electric grease gun. The pumping mechanism inside the grease injection tube is connected to the grease gun drive motor via the motor input shaft, providing the pumping mechanism with the necessary power. The grease injection tube is connected to the oil delivery hose via the right-angle compression fitting grease pipe connector, delivering the pressurized grease to the target lubrication point. The lower end of the electric oil gun holder has round holes around its perimeter to fit the bottom of the electric oil gun; the upper end of the electric oil gun holder has countersunk screw holes around its perimeter, with the screw passing through the electric oil gun in the middle and fitting against the upper part of the lower end of the electric oil gun holder. One end of the grease injection motor adapter has a countersunk hole that matches the input shaft of the electric grease gun motor and is connected to the input shaft of the electric grease gun motor. The other end has a countersunk hole that matches the grease gun drive motor and is connected to the grease gun drive motor. One end of the oil hose is connected to the right-angle clamp-type oil hose connector of the electric oil gun, and the other end is connected to the screw cleaning assembly (7) or the guide rail grease injection assembly (38).

7. The cleaning and lubrication device for the ball screw and positioning guide rail of the nuclear power plant bridge as described in claim 1, characterized in that, The upper support ring (27) has a slot inside. The conductive copper ring A (28) and the conductive copper ring B (29) are respectively inserted into the slot inside the upper support ring (27) and then connected to the outer bracket screw. The top of the screw has a terminal block to connect the wire to the control circuit board (47) in the electrical box (44).

8. The cleaning and lubrication device for the ball screw and positioning guide rail of the nuclear power plant bridge as described in claim 1, characterized in that, The upper support ring (27) and the lower support ring (33) are cut into two halves along the center and are made of non-metallic polymer materials.

9. The cleaning and lubrication device for the ball screw and positioning guide rail of the nuclear power plant bridge as described in claim 1, characterized in that, The guide rail grease injection assembly (38) is equipped with a guide rail grease injection structure, a scraper half-ring and a guide rail cleaning cotton installation space that match the positioning guide rail; The guide rail grease injection assembly (38) is equipped with an L-shaped handle and a spring. By stretching the L-shaped handle above the guide rail grease injection assembly and compressing the spring to form a lateral displacement, the guide rail grease injection assembly (38) and the positioning guide rail are installed and limited. The guide rail grease injection assembly (38) performs oil scraping half-ring cleaning and guide rail cleaning cotton cleaning on the positioning guide rail when the device moves upward.

10. The cleaning and lubrication device for the ball screw and positioning guide rail of the nuclear power plant bridge as described in claim 1, characterized in that, When the device is installed and started, the control circuit board (47) controls the drive motor to rotate in the forward direction. The drive motor drives the gear to rotate the two half-type driven gear, so that the device climbs up along the bridge ball screw at a predetermined speed. During the climbing process, the waste grease on the surface of the bridge ball screw and the positioning guide rail is cleaned. When the device reaches the specified height set by the program, the control circuit board controls the drive motor to rotate in the opposite direction, so that the device descends at a predetermined speed. During the descent, new grease is reapplied to the surface of the bridge ball screw and the positioning guide rail. When the device reaches the position where it was started, it automatically stops, completing the cleaning and grease injection of the ball screw and positioning guide surface of the bridge frame.

11. The cleaning and lubrication device for the ball screw and positioning guide rail of the nuclear power plant bridge as described in claim 1, characterized in that, The control circuit board (47) has a dual redundant power supply with priority control, which supports any single power supply to power the device, and also supports redundant power supply to power the device. When the device is powered by the redundant power supply, the external DC power supply is given priority by default. When the main power supply fails due to abnormal power loss, the other redundant power supply is automatically switched to power the device. The redundant power supply also has reverse connection protection, short circuit protection and power-on soft start function. The dual redundant power supply includes a polymer lithium battery (46) and an external DC power supply; the polymer lithium battery (46) and the external 24V provide dual input redundant power supply for the device; lead plates (45) are distributed around the control circuit board (47).

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