Multifunctional handcart type circuit breaker maintenance vehicle
Technical Field
The invention relates to a multifunctional handcart type circuit breaker maintenance vehicle, and belongs to the technical field of electric maintenance auxiliary tools.
Background
KYN28A-12 is a relatively common high-voltage switch cabinet in China at present, and the full name is: indoor metal armoured movable switch equipment. The rated voltage is 3.6 kV-12 kV, and the vacuum circuit breaker is characterized in that the vacuum circuit breaker is arranged in a middle mode and is divided into three layers, wherein the upper layer is a bus and an instrument room (isolated from each other), the middle layer is a circuit breaker room, and the lower layer is a cable room. Because the circuit breaker is in the middle layer, the circuit breaker is called an armored movable middle-set metal closed switch device, and is called a middle-set (switch) cabinet for short. It has perfect five-prevention function: the loaded push-pull circuit breaker handcart is prevented; preventing the circuit breaker from being opened or closed by mistake; preventing the earthing switch from closing the circuit breaker when in the closed position; preventing misentering the charging compartment; the interlocking function such as the grounding switch is prevented from being mistakenly combined when the power is on, the power distribution equipment with excellent performance can be widely applied to power transmission and distribution in various industries and fields such as power plants, power substations, industrial and mining enterprises, rail transit, urban infrastructure construction and the like, the power receiving, power transmission and electric energy distribution functions of a secondary power substation of a power system are realized, and the control, protection, monitoring and the like are realized on a circuit, so that the safe operation of the power system is ensured.
The circuit breaker body and the handcart operating mechanism (chassis) of the handcart type circuit breaker with the core part of the centrally installed switchgear are in an upper unit structure and a lower unit structure, the quality of the handcart type circuit breaker with different types and specifications is between approximately 200 kg and 300 kg, the body and the chassis operating mechanism are combined in a mode of being fixed at the lower bottom of the handcart of the circuit breaker by screws, the circuit breaker needs to be safely maintained and overhauled in a rated working period or when faults occur, the circuit breaker and the cabinet body are required to be completely separated and removed under normal conditions, a special operation trolley is connected and removed from the circuit breaker chamber, the cabinet body of each switch cabinet manufacturer is not restricted by unified standards, the height and width dimensions are different, the specification and the style of the operation trolley are different, the functions of the operation trolley such as single use, structural stability, firmness and safety are also poor, one unit needs to be provided with a plurality of operation trolleys for standby, and hidden hazards of damaging in use and dangerous accidents occur in the operation of the circuit breaker are often stored. In maintenance and overhaul, the circuit breaker often finds electrical and mechanical faults in the chassis, particularly, the (S8, S9) travel switch, auxiliary switch, mechanical interlocking mechanism and other problem faults in the chassis, which are also the high-fault-rate parts of the circuit breaker, and three general traditional schemes are adopted: 1. returning to manufacturers for solving treatment, wherein the defects are that the emergency maintenance can not be timely supplied, the delivery period is slow, and the replacement is guaranteed by a standby breaker; 2. the technical scheme is that a field or a suitable field support derrick mast is matched with tools such as a chain block, a hoisting rope and the like to hoist the circuit breaker at a certain working height from the ground, and an maintainer disassembles and overhauls the lower bottom surface of the circuit breaker; 3. in the process, a plurality of maintenance personnel are required to lift the circuit breaker off the lower operation trolley, and the circuit breaker is moved to the ground in a violation operation mode to be lifted up to 180 degrees to be disassembled and maintained in an inverted state, so that the method is extremely easy to cause the whole breaking of the circuit breaker, the extrusion deformation of the pole head contact, the deflection damage of the spring mechanism and the like, thereby causing larger damage. All the three schemes have the advantages of slow work progress, low efficiency, high labor intensity and incapability of effectively guaranteeing the safety of personnel and equipment.
Disclosure of Invention
Aiming at the problems in maintenance and overhaul of the handcart type circuit breaker, the invention provides the switch cabinet overhaul trolley which can be used on site, has wide application range, is convenient to operate, has comprehensive performance, is safe and reliable, can cope with overhaul work, can greatly improve the maintenance and overhaul work efficiency, and can finish work tasks by extremely short time period, easy operation flow and safe measure steps.
The technical solution for realizing the purpose of the invention is as follows: the utility model provides a multi-functional handcart-type circuit breaker maintenance car, includes the frame body, upper and lower sliding unit, gyration supporting bearing, rotatory fixed plate, two ball linear guide pair, left and right sides spiral shell screw, two moving plates that open and shut, two L type bearing rail, two Z types movable fixed plate, solid lock movable joint pull rod bolt, solid press from both sides the channel-section steel, girder steel, assembly pulley, hand winch and traction wire rope on the bearing load, upper and lower sliding unit sets up on the frame body, rotatory bearing fixed plate is located the approximate middle part of maintenance car and is connected with upper and lower sliding unit, gyration supporting bearing and upper and lower sliding unit and rotatory bearing fixed plate fixed connection the upper portion and the lower part of rotatory bearing fixed plate respectively transversely set up a ball linear guide pair, through the left and right sides spiral shell screw and the slider control moving plates that open and shut, the lower extreme of two moving plates that open and shut respectively connects an L type bearing rail, L type bearing rail is used for with the cooperation of capstan winch, Z type bearing rail is used for and the movable joint pulley unit is fixed in the fixed plate that can be fixed in the fixed connection of two moving the movable joint of the movable joint steel rail Z type rolling guide rail, the fixed plate is fixed in the fixed connection Z type rolling wheel on the fixed plate is the fixed with the fixed top of the fixed connection of the reel Z type on the frame.
Preferably, the frame body is L-shaped frame structure, and the frame body comprises two perpendicular C-shaped guide steel and two vertical bottom beams, back truckle supporting liners, transverse columns and push-pull handles, and front and back truckles are installed in the frame body bottom, and two front wheels are directional wheels, and each assembly is in the front end of two vertical bottom beams, and two back wheels are universal wheels with pedal brakes, and are installed respectively and fixed below the both sides supporting liners of the frame body.
The vertical sliding unit comprises left and right side roller mounting plates, large rollers, roller shafts, sleeves, locking nuts, transverse gap adjusting blocks, small rollers, adjusting jackscrews, front and rear clamping plates, inner pulleys, pin shafts, bearing sleeves, aligning bearings, a central main shaft, a rotating sleeve, worm gears, worm shafts, UCP shaft seats, rotating hand wheels (18) and outer cover shells, the large rollers, the small rollers, the roller shafts, the sleeves and the locking nuts on the left and right sides are in a staggered arrangement and are matched with the transverse gap adjusting blocks, the small rollers and the adjusting jackscrews in vertical C-shaped guide steel grooves of a frame body on the roller mounting plates, the front and rear clamping plates are combined and fixed into a whole, the inner pulleys are installed between the front and rear clamping plates in a penetrating mode through the pin shafts, the bearing sleeves, the aligning bearings and the main shafts are assembled at the central parts of the front and rear clamping plates, the main shaft heads of the front clamping plates are assembled with the rotating sleeves, the tail parts of the main shafts of the rear clamping plates are fixed through flat keys, press pads and screws, the worm shafts and the worm gears are mutually matched with the worm gears, and the two shaft heads of the UCP shaft shafts are fixed on the outer planes of the rear side plates of the rear clamping plates.
Preferably, the rotary support bearing is an integrated combined structure, and is composed of an inner rolling ring, an outer rolling ring, a separator and rolling bodies, and can bear larger axial force, radial force and tipping moment simultaneously, the planes of the inner rolling ring and the outer rolling ring are provided with mounting holes, the planes of the outer rolling ring and the outer plane of the front clamping plate are fixedly mounted, and the planes of the inner rolling ring are fixedly arranged on the rear plane of the rotary bearing fixing plate.
Preferably, a double-slider ball linear guide rail pair is respectively assembled below the transverse direction of the plate surface of the rotary bearing fixing plate, the double-slider ball linear guide rail pair is fixedly connected with the upper and lower positions of the opening and closing moving plate, and the middle part of the opening and closing moving plate is connected with the screw nut in an installation way; the end of the pillow block is provided with an opening and closing hand wheel, and the middle upper part in front of the rotary bearing fixed plate is provided with a limit chute for adjusting and fixing the Z-shaped movable fixed plate in a transverse movement way.
Preferably, the two moving plates are strip-shaped plates, the upper, middle and lower parts of the plates are respectively provided with a mounting hole, and the plates are bridging plates for connecting the upper and lower sliding blocks, the fixed nuts and driving the L-shaped bearing rails to move.
Preferably, the section of the L-shaped bearing rail is L-shaped, the vertical side is gradually deformed in length direction, one end of the wide head is welded with a fixed plate and an opening and closing movable plate which are fixedly connected, the narrow head is fixedly connected with a 7-shaped positioning bolt mounting plate, and the mounting plate is provided with a positioning bolt for inserting a positioning pin hole of a vehicle body and a cabinet body.
Preferably, the fixing and clamping channel steel is used by acting on the circuit breaker box body and the Z-shaped movable fixing plate to clamp and fix, the plane end of the fixing and clamping channel steel is glued with the polyurethane elastic plate, and the fixing and clamping channel steel is provided with a long groove, so that the fixing and clamping channel steel is convenient to adapt to circuit breakers of different specifications and types.
Preferably, the pulley blocks are two groups, and each pulley block consists of pulleys, bearings, pulley supports, bearing pin shafts and fixing screw nuts, and plays a role in guiding and changing the traction direction of the steel wire rope.
Preferably, the box body of the hand winch is internally provided with a ratchet friction plate planetary gear structure, and the hand handle of the input shaft head is rotated to drive the central winding and unwinding disc to wind and unwind the traction steel wire rope.
The invention has the following beneficial effects: the invention can be used on site, has wide application range, convenient operation, comprehensive performance, safety and reliability, can cope with maintenance work, can greatly improve the maintenance work efficiency, and can complete work tasks by using extremely short time period, easy operation flow and safe measure steps.
In addition to the objects, features and advantages described above, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.
Drawings
FIG. 1 is a schematic view of the forward overall structure of the present invention
FIG. 2 is a schematic view of the backward overall structure of the present invention
Detailed Description
Embodiments of the invention are described in detail below with reference to the attached drawings, but the invention can be implemented in a number of different ways, which are defined and covered by the claims.
Reference numerals illustrate:
The frame body 1, the up-down sliding unit 2, the rotary support bearing 3, the rotary bearing fixing plate 4, the ball linear guide rail pair 5, the left-right screw rod 6, the screw 7, the opening-closing moving plate 8, the L-shaped bearing rail 9, the Z-shaped movable fixing plate 10, the fixed lock movable joint pull rod bolt 11, the fixed clamp channel steel 12, the load bearing upper steel beam 13, the pulley block 14, the hand winch 15, the traction steel wire rope 16, the protective cover 17, the rotary hand wheel 18, the opening-closing hand wheel 19 and the positioning bolt 20.
Referring to fig. 1-2, a multifunctional handcart type breaker maintenance vehicle is characterized by comprising a frame body 1, an up-down sliding unit 2, a slewing bearing 3, a rotary bearing fixing plate 4, two ball linear guide rail pairs 5, a left-right screw rod 6, a screw 7, two opening and closing moving plates 8, two L-shaped bearing rails 9, two Z-shaped movable fixing plates 10, a fixed lock movable joint pull rod bolt 11, a fixed clamp channel steel 12, a bearing upper steel beam 13, a pulley block 14, a hand winch 15 and a traction steel wire rope 16, wherein the up-down sliding unit 2 is arranged on the frame body 1, the rotary bearing fixing plate 4 is positioned at the approximate middle part of the maintenance vehicle and is connected with the up-down sliding unit 2, the slewing bearing 3 is fixedly connected with the up-down sliding unit 2 and the rotary bearing fixing plate 4, the ball linear guide rail pairs 5 are respectively and transversely arranged at the upper part and the lower part of the rotary bearing fixing plate 4, the ball linear guide rail pair 5 is connected with two longitudinally arranged opening and closing movable plates 8 through a sliding block, the left and right movement of the opening and closing movable plates 8 is controlled by a left and right screw rod 6 and a screw nut 7, the lower ends of the two opening and closing movable plates 8 are respectively connected with an L-shaped bearing rail 9, the L-shaped bearing rails 9 are used for being matched with rollers of a circuit breaker chassis 26, the two Z-shaped movable fixed plates 10 are respectively fixed on the two opening and closing movable plates 8, the fixed clamp channel steel 12 is fixedly connected with the two Z-shaped movable fixed plates 10 and horizontally arranged, the fixed lock movable joint pull rod bolts 11 are used for realizing the fixed locking of the Z-shaped movable fixed plates 10 and the circuit breaker body, the bearing upper steel beam 13 is positioned at the top end of the frame body 1, the bearing upper steel beam 13 is provided with the pulley block 14, the traction wire rope 16 is connected to the up-down sliding unit 2 through one end of the pulley block 14 and the other end is connected to the hand winch 15 for realizing the up-down movement of the up-down sliding unit 2.
Further, the frame body 1 is of an L-shaped frame structure, the frame body 1 is composed of two vertical C-shaped guide steel, a double longitudinal bottom beam, a rear trundle supporting liner, a transverse upright post and a push-pull handle, front trundles and rear trundles are arranged at the bottom of the frame body, two front wheels are directional wheels and are respectively assembled at the front end parts of the double longitudinal bottom beam, and two rear wheels are universal wheels with pedal brakes and are respectively arranged and fixed below the two side supporting liners of the frame body.
Further, the up-down sliding unit 2 comprises left and right side roller mounting plates, large rollers, roller shafts, sleeves, locking nuts, transverse gap adjusting blocks, small rollers, adjusting jackscrews, front and rear clamping plates, inner pulleys, pin shafts, bearing sleeves, aligning bearings, a central main shaft, a rotating sleeve, worm gears, worm shafts, UCP shaft seats, rotating hand wheels (18) and outer cover shells, the large and small rollers, the roller shafts, the sleeves and the locking nuts on the left and right sides are in a front-back staggered arrangement and are connected with the transverse gap adjusting blocks, the small rollers and the adjusting jackscrews on the roller mounting plates into a whole by being connected and fixed with the vertical C-shaped guide steel grooves matched with the frame body, the front and rear clamping plates are provided with the inner pulleys by pin shafts in a penetrating mode, the bearing sleeves, the aligning bearings and the main shafts are arranged at the central positions of the front and rear clamping plates, the main shaft heads of the front clamping plates are provided with the rotating sleeves, the tail parts of the main shafts of the rear clamping plates are provided with flat keys, the pressing pads and screws are fixed by the screws, and the worm gears, the worm shafts and the worm gears are mutually matched with the worm shafts, and the two shaft heads are fixed on the outer plane of the rear side plates by the UCP shaft seats.
Further, the rotary support bearing 3 is an integrated combined structure, and is composed of an inner rolling ring, an outer rolling ring, a separator and rolling bodies, and can bear larger axial force, radial force and tipping moment simultaneously, the planes of the inner rolling ring and the outer rolling ring are provided with mounting holes, the planes of the outer rolling ring and the outer plane of the front clamping plate are fixedly mounted, and the planes of the inner rolling ring are fixedly arranged on the rear plane of the rotary bearing fixing plate 4.
Further, a double-slider ball linear guide rail pair 5 is respectively assembled below the transverse direction of the plate surface of the rotary bearing fixed plate 4, the double sliders are fixedly connected with the upper and lower positions of the opening and closing movable plate 8, and the middle part of the opening and closing movable plate 8 is connected with the screw 7 in an installation way; the two pillow block ends of the left-right screw rod 6 are assembled with UCF bearing blocks and fixed on the side surface end of the rotary bearing fixed plate by using a mounting plate, the tail ends of the pillow blocks are all provided with opening and closing hand wheels 19, and the left and right parts of the middle upper part in front of the rotary bearing fixed plate 4 are respectively provided with limiting sliding grooves for transversely moving, adjusting and fixing the Z-shaped movable fixed plate 10; the number of the ball linear guide rail pairs 5 is 2, a square linear rail is adopted to be matched with a guide rail pair of a double-slider ball structure, and the balls are in point contact with a linear rail slideway to be matched with low-friction linear guide movement, so that a stronger subversion moment can be loaded; the axial middle section of the left-right screw rod 6 is respectively turned into a T-shaped left-right screw thread, and the length of left-right threads is equal to or longer than the required working length; the screw nut 7 is formed by matching left-right-handed T-shaped screw teeth with a screw rod, two screw teeth and a seat with a mounting hole, and is respectively arranged at the middle position behind the opening and closing moving plate 8;
Further, the two moving plates 8 are strip-shaped plates, the upper, middle and lower parts of the plates are respectively provided with a mounting hole, and the plates are bridging plates for connecting the upper and lower sliding blocks, the fixed nuts and driving the L-shaped bearing rails to move.
Further, the section of the L-shaped bearing rail 9 is L-shaped, the vertical side is gradually deformed in the length direction, one end of the wide head is welded with a fixed plate and connected and fixed with the opening and closing movable plate 8, the narrow head is fixedly connected with a 7-shaped positioning bolt mounting plate, and the mounting plate is provided with a positioning bolt 20 for inserting and connecting a vehicle body and a positioning pin hole of the cabinet body; the two Z-shaped movable fixing plates 10 are respectively matched with the upper transverse limit grooves in the rotary bearing fixing plates, and the locking screws can transversely move within the limit grooves of the rotary bearing fixing plates when the locking screws are loosened; the fixed lock movable joint pull rod bolt 11 is two pieces and is used for connecting the Z-shaped movable fixing plate and the breaker body for fixing and locking;
Further, the fixing and clamping channel steel 12 acts on the breaker box body and the Z-shaped movable fixing plate 10 to be clamped, fixed and combined, the plane end of the fixing and clamping channel steel 12 is glued with a polyurethane elastic plate, and a long groove is formed in the fixing and clamping channel steel, so that the fixing and clamping device is convenient to adapt to breakers of different specifications and types.
Further, the pulley blocks 14 are two groups, and consist of pulleys, bearings, pulley supports, bearing pin shafts and fixing screw nuts, so as to play a role in guiding and changing the traction direction of the steel wire rope; the loading upper steel 13 is of a T-shaped structure, is installed and fixed on the top of the C-shaped guide profile steel of the frame body, and is internally and downwards provided with a pulley block 14;
Further, a ratchet friction plate planetary wheel structure is arranged in the box body of the hand winch 15, and the hand handle of the input shaft head is rotated to drive the central winding and unwinding disc to wind and unwind the traction steel wire rope 16; one end of the rope head of the traction steel wire rope 16 is fixedly wound in a winding and unwinding reel of the hand winch, the other end of the rope head vertically upwards penetrates into a pulley block below the inside of the upper steel beam, then downwards passes through an inner pulley between a front clamping plate and a rear clamping plate of the upper sliding unit assembly, finally is pulled to the right upper side, and the rope head is fixed on a U-shaped clamping head of the loading upper steel beam; the protective cover 17 is formed by two parts, one part is fixed on the upper part of the loading upper steel beam, and the other part is arranged on a rear clamping plate of the upper and lower sliding units and is used for safety protection.
The working principle and the process of the invention are as follows: firstly, the method comprises the butt joint function with a switch cabinet body, and comprises the following steps: 1. confirming that the circuit breaker to be detected is positioned at a test (isolation) position and has a working state capable of being overhauled; 2. disassembling a front switch panel of the removing mechanism box, and displaying a box body frame; 3. before the traveling maintenance vehicle device reaches the breaker chamber, at the position about 1cm-5cm away from the front of the chamber, a traction steel wire rope in a winch is wound and unwound by a hand winch handle according to different specifications, the traction steel wire rope is driven to move up and down (up and down) by pulley block components to drive up and down sliding unit components and components combined with the up and down sliding unit components to stop in a state that the upper plane in a double-L-shaped bearing rail is flush with the upper plane of the chamber handcart rail, an opening and closing hand wheel at the head end of a left and right hand screw shaft is rotated to enable a screw matched with the screw to drive an opening and closing moving plate to move, so that the upper inner side surface of the double-L-shaped bearing rail and the inner side surface of the chamber rail are aligned, if the position is deviated, the opening and closing hand wheel is in and out, the problem can be solved by slightly adjusting the vehicle body; 4. the maintenance vehicle device continues to move forward, so that two positioning bolts at the lower part of the L-shaped bearing rail are all inserted into positioning pin holes at the lower edge of the cabin opening, the port end of the L-shaped bearing rail is basically in a butt joint state with a handcart rail in the cabin, and then two rear casters of the vehicle body are stepped down to be braked and locked; 5. the circuit breaker is drawn out to the maintenance vehicle device along the track in a conventional operation mode until the side surface of the front outer frame of the circuit breaker mechanism box is abutted against the Z-shaped movable fixing plate, and the circuit breaker is moved to the maintenance vehicle device from the cabin; 6. taking a fixed clamp channel steel, enabling the plane end (adhesive polyurethane surface) of the channel steel to be attached to the back of a box body of the upper circuit breaker mechanism, enabling a bolt head of a fixed lock movable joint pull rod to penetrate through a slotted hole of the fixed clamp channel steel, and completely fixing the circuit breaker on a Z-shaped movable fixing plate of a maintenance vehicle device by using a hexagonal nut on the plane in the channel steel groove; 7. the rear caster wheel brake moving-back maintenance vehicle device of the vehicle body is released and separated from the chamber cabin; 8. and (5) adjusting the direction of the vehicle body to push to a proper working position until the process is finished. If the breaker is operated to other room cabins, namely, the maintenance vehicle device and the breaker clamped (or placed) on the maintenance vehicle device are pushed to the room cabins to be loaded, the maintenance vehicle device is firstly in butt joint with the room cabins, then the vehicle body is locked, the breaker is pushed into the room cabins, and finally, the maintenance vehicle device and the breaker are checked and confirmed to be in place. If the chassis part of the maintenance handcart is needed, namely, the hand wheel is rotated by shaking, the worm and the worm wheel rotate to drive the rotating mechanism to rotate the clamped breaker to the left or right according to the required working angle on the maintenance handcart device, and the overturning angle can be controlled at will between 0 and 360 degrees, and can be locked and stopped in any angle state because of the form of a large-speed-ratio worm and worm wheel. The ideal angle suitable for overhauling the chassis part is that the bottom of the circuit breaker is upward (the overturning angle is 180 degrees), and the overhauling operation can be carried out only by swinging to the state. If the handcart operating mechanism (chassis) is required to be separated from the breaker body, an maintainer only needs to disassemble the screws combined with the handcart operating mechanism (chassis) and the breaker body, and then shakes the opening and closing hand wheels on the left-right screw rods to enable the double-L-shaped bearing rail to move and the contact surface of the rollers of the chassis to be separated, so that the chassis can be completely removed. When the maintenance work is completed, the hand wheel is rotated to close and close the double L-shaped track to the previous state, then the breaker is turned to the initial position (0 degree) to butt against the chamber, the clamped nut is unscrewed, the movable joint pull rod bolt of the fixed lock is withdrawn, the fixed clamp channel steel is taken down, the breaker is pushed into the chamber test (isolation) position along the track, and the front switch panel is arranged, so that the maintenance work of the breaker is completed comprehensively.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.