82 results about "Machine repair" patented technology

The application discloses a clamping tool for inner and outer circular grinding machine, and relates to the technical field of inner and outer circular grinding machines, which comprises a bottom plate, a rotating mechanism arranged on the bottom plate, adjusting mechanisms connected to the two sides of the rotating mechanism, an adapter connected to the ends of the two adjusting mechanisms away from the rotating mechanism, a moving disc connected to the adapter, and a lifting mechanism connected to the end of the moving disc away from the adapter. The inner and outer circular grinding machine is placed on the placing plate, telescopic rod II is adjusted, and is moved up and down in sleeve I. The limiting blocks on the two sides of telescopic rod II limit telescopic rod II. After telescopic rod II is moved to a suitable position, the handle is pushed, the inserting rod is pushed into the inserting hole I on telescopic rod II, the height is adjusted, and the inner and outer circular grinding machine on the placing plate is clamped.

The utility model relates to the technical field of agricultural machinery maintenance, in particular to a pulling device for agricultural machinery, which comprises a mounting block, the side wall of the mounting block is provided with two symmetrically arranged mounting grooves, and the inner wall of the mounting groove on the right side is fixedly connected with a fixed handle. A connecting rod is fixedly connected to the inner wall of the left mounting groove, a movable handle is rotatably connected to the surface of the connecting rod, a mounting hole is formed in the upper surface of the mounting block, a circular groove is formed in the lower surface of the mounting block, and a hollow groove is formed in the surface of the movable handle; two symmetrically-arranged threaded columns are fixedly connected to the two sides of the mounting block, and by arranging the threaded columns, the first threaded pipe, the second threaded pipe, the elbow, the rotary switch and the adjusting rod, in the using process, the rotary switch is rotated to drive the adjusting rod to rotate, and the height of the extraction tool can be adjusted under the interaction of the adjusting rod and the fixing rod.

This utility model discloses a novel electric screwdriver with a modular design, including a screwdriver body and a handle mechanism. The screwdriver body includes a main body shell, a screwdriver head, and a drive assembly. The rear end of the main body shell has a T-shaped or dovetail-shaped locking groove, within which a conductive groove electrically connected to the drive assembly is embedded. The handle mechanism includes a handle housing containing a battery module and a control module. The housing has a slide rail boss that matches the locking groove, and a conductive plate on the boss. When inserted into the locking groove, the plate forms an interference contact with the conductive groove, achieving stable power supply. The contact surface between the conductive groove and the conductive plate is plated with a silver-nickel alloy layer to enhance oxidation resistance. The side of the locking groove has a positioning hole for fixed connection via a limit screw. This utility model has advantages such as convenient assembly and disassembly, stable conductivity, and strong vibration resistance, solving the problems of inconvenient maintenance, limited battery life, and poor versatility of traditional electric screwdrivers. It is suitable for various scenarios such as electronic assembly and mechanical repair.

The utility model discloses a counter-force device for calibrating pneumatic and electric wrenches, and belongs to the technical field of wrench calibration. The device comprises a base, an upper table top is arranged above the base, a protective jacket is arranged between the upper table top and the base and extends to the top of the upper table top, a positioning seat is arranged at the upper end of the protective jacket, a positioning disc is arranged above the positioning seat, and a sensor is arranged at the bottom of the positioning disc. An upper simulator base is arranged on the top surface of the upper table top, a plurality of spanner handle supports are arranged on the two sides of the top surface of the upper table top, and stop levers are arranged on the spanner handle supports; according to the utility model, on the basis of the adaptive design of a plurality of groups of mounting hole sites, the telescopic stop lever and the universal adapter of the upper simulator base, the device can be compatible with pneumatic / electric wrenches with different torque specifications and can be simultaneously adaptive to simulators with various models, equipment or core accessories do not need to be frequently replaced, the equipment investment and operation complexity of calibration operation are greatly reduced, and the calibration efficiency is improved. The method is suitable for calibration requirements of multiple scenes such as industrial manufacturing and mechanical maintenance.

The utility model discloses a coal mine machinery dismounting device, and belongs to the field of coal mine machinery dismounting, the coal mine machinery dismounting device comprises a mounting seat and a sliding seat, the middle part above the sliding seat is fixedly connected with a first threaded rod, and the interior of the first threaded rod is rotatably connected with a second threaded rod. Three rotating rods penetrate through a bearing, then a second handle is rotated, a moving block drives the rotating rods to be unfolded, an outer protrusion clamps the lower portion of the bearing, a first handle is rotated reversely, a sliding base moves upwards, the device applies force to separate the bearing from the workpiece, and when the bearing outside the workpiece is disassembled, the first handle is rotated, the sliding base moves upwards, and the device is cooperated with a component through a structure to disassemble the bearing. The device can adapt to bearings at different positions, is widely applied to maintenance of coal mine machinery, improves the maintenance flexibility and comprehensiveness, saves the equipment maintenance cost, guarantees stable operation of equipment, and improves the production safety and reliability.

The invention provides a longitudinal beam replacement device and method for a coal mine belt conveyor, and belongs to the technical field of mining machinery maintenance. The device comprises a moving platform, a walking mechanism, a carrier roller frame jacking mechanism and a first driving mechanism. The walking mechanism is arranged at the top of the moving platform and is embedded into a notch of the longitudinal beam to roll; the carrier roller frame jacking mechanism is installed on the moving platform and comprises a second driving mechanism, a transmission connecting rod assembly and a top bearing beam, the second driving mechanism drives the transmission connecting rod assembly to enable the top bearing beam to vertically ascend and descend, and therefore the upper groove carrier roller frame is jacked up or put down; the first driving mechanism drives the moving platform to move along the longitudinal beam. The device has the beneficial effects that the belt conveyor longitudinal beam is used as a walking track, rapid migration of the device is achieved through driving of the first driving mechanism, simultaneous jacking of multiple sets of carrier roller frames is achieved through the transmission connecting rod assembly, an operation space is provided for replacement of the belt conveyor longitudinal beam, the manual carrying strength is remarkably reduced, and the working efficiency is improved. And the longitudinal beam replacement efficiency and the operation safety are improved.

The utility model relates to the technical field of engineering machinery maintenance, and discloses an engineering machinery maintenance commodity shelf which comprises a bearing plate, and a rotating disc is connected to the bearing plate in a sliding mode. The electric hydraulic cylinder is started to drive the moving plate to move, at the moment, the sliding hole slides along the outer wall of the sliding rod, the moving plate drives the sliding rod to move, the sliding rod drives the sliding plate to slide along the inner wall of the sliding groove, the sliding plate drives the connecting frame to move, and the connecting frame drives the clamping plate to move. The two clamping plates can move relatively to clamp objects on the object placing plate, the distance between the clamping plates can be flexibly adjusted according to the sizes of the objects, various engineering machinery parts can be stably fixed, the objects are effectively prevented from falling off due to shaking and collision in the maintenance or object placing process, the safety of the object placing frame is improved, and the service life of the object placing frame is prolonged. And the risk that workers are injured by objects falling from high altitudes is avoided.

The utility model belongs to the technical field of arresting devices, and particularly relates to a cart arresting device for port machinery maintenance, which comprises a base and further comprises an overturning plate, a movable plate, a movable plate, a movable plate, a movable plate and a movable plate, and the overturning plate is arranged on the top surface of the base in an overturning manner; the driving mechanism is connected to the turnover plate in a drivable manner and is used for driving the turnover plate to turn over; the sliding plate is provided with a guide notch in the turnover plate, and the sliding plate is movably arranged in the guide notch; the clamping mechanism is mounted on the sliding plate, and is used for clamping a wheel; the adjusting mechanism is used for adjusting the initial height of the sliding plate, the adjusting mechanism comprises a top plate, a threaded lead screw and a handle, and the top plate is fixed to the free end of the overturning plate; according to the wheel clamping device, the initial height of the clamping mechanism can be adjusted through the arranged adjusting mechanism, wheels of different sizes can be reliably clamped, stability is improved, and the application range is wider.

The invention discloses an axis self-adaptive alignment and precise disassembly method for a heavy hydraulic cylinder, and belongs to the technical field of mining machinery maintenance. In order to solve the problems that a traditional disassembling method is low in efficiency, poor in safety, prone to damage a workpiece and the like, the method is achieved through the steps of pretreatment fixing, axis self-adaptive alignment, precise clamping and final alignment, controllable unscrewing disassembling and the like. Which comprises a rack, an adjustable fixing seat, a hydraulic driving system and a control system, and is characterized in that an axis self-adaptive alignment mechanism consisting of a customized chuck and an alignment disc is arranged. An annular boss on the alignment disc is matched with a groove, and axis coincidence of the chuck and the workpiece can be automatically guided and accurately corrected. Mechanization and precision of the disassembling process are achieved, the disassembling efficiency is improved by 100% to 20 pieces per shift, the disassembling success rate reaches up to 99.8%, the labor intensity, the safety risk and the maintenance cost are remarkably reduced, and good application and popularization prospects are achieved.

The utility model discloses an auxiliary lifting device for port machinery maintenance, which relates to the technical field of machinery maintenance, comprises a movable seat and is characterized in that the top end of the movable seat is provided with a lifting device, and the top end of the lifting device is fixedly connected with a servo motor. The adjusting screw is rotated to drive the sliding block to move horizontally, the adjusting plate can be pushed to achieve inclined or horizontal displacement by means of a connecting rod mechanism composed of the rotating rod and the supporting rod, and therefore the device can adapt to harbor machinery maintenance parts of various shapes and structures, and the harbor machinery maintenance parts are not prone to falling off. And the movable block can flexibly slide along the adjusting plate and is inserted into the limiting hole through the insertion rod to fix the position, rapid adjustment can be conducted according to maintenance parts of different sizes, and the practicability of the device in port machinery maintenance is further enhanced.

The utility model provides a mining equipment machinery maintenance wrench, which comprises a wrench cylinder and an inner hexagonal wrench head, one end of the wrench cylinder is embedded with an insertion connecting sleeve, one end of the inner hexagonal wrench head is provided with a positioning connecting column, and the positioning connecting column is inserted into the insertion connecting sleeve so that the inner hexagonal wrench head is connected with the wrench cylinder. A bolt adjusting column is installed on the side portion of the wrench cylinder column, an adjusting handle is installed at one end of the bolt adjusting column, and a threaded connecting hole is formed in the side portion of the positioning connecting column. The positioning connecting column is inserted into the inserting connecting sleeve so that the inner hexagonal wrench head can be connected with the wrench cylinder, the bolt adjusting column is installed on the side portion of the wrench cylinder, the threaded connecting hole is formed in the side portion of the positioning connecting column, and the other end of the bolt adjusting column is connected with the threaded connecting hole. And the tightness of the bolt adjusting column is conveniently adjusted through the adjusting handle, so that the inner hexagonal wrench head is quickly disassembled, mounted and replaced, and the operation is very convenient.

The utility model discloses a dismounting device for a sealing ring of a crankshaft of a loading machine engine, which belongs to the technical field of mechanical maintenance tools and comprises a positioning disc used for fixing the sealing ring of the crankshaft and a small puller mounted at the upper end of the positioning disc, and the small puller is movably mounted at the upper end of the positioning disc. A self-tapping screw and a connecting part are connected and fastened with a hole groove in the upper end of a sealing ring, then an adjusting screw rod is installed, after the adjusting screw rod is in place, an operation tool is used for rotating a hexagonal adjusting part at the end, the interior of the hexagonal adjusting part abuts against the inner side of the sealing ring installation position, and the installation shell and the crankshaft sealing ring are separated from the interior of a sealing ring installation cavity; under the condition that a tool is not used for damaging the sealing ring, the sealing ring is taken out, if the adjusting screw rod is inconvenient to operate, the adjusting screw rod can be replaced by a small puller, and operation and disassembly are convenient.

The utility model discloses a lossless torque dismounting tool of a lower shaft sleeve for an oil sprayer, which belongs to the technical field of mechanical maintenance tools and comprises a torque controller, a locking piece and two symmetrical arc-shaped hoops, the locking piece is fixed on the two arc-shaped hoops, and the position of the locking piece can be adjusted. The two arc-shaped hoops are fixed through the locking piece to form a hoop sleeve used for clamping and holding a lower shaft sleeve of the oil sprayer, after the two arc-shaped hoops are clamped and fixed to the lower shaft sleeve of the oil sprayer, a gap of 1-2 mm is reserved between the side end faces of the two arc-shaped hoops, and a torsion hole matched with a torsion controller is formed between the top ends of the two arc-shaped hoops. The torsion hole and the hoop sleeve are both coaxial with the oil sprayer lower shaft sleeve. The torque controller is stressed to drive the hoop sleeve to rotate through the torque hole and disassemble and assemble the oil injector lower shaft sleeve, so that the problems that the torque application cannot be consistent with the manufacturer standard when the oil injector is autonomously repaired, and the oil injector lower shaft sleeve is easily damaged and scrapped due to the pipe wrench side rotation torque are solved; the device has the advantages of being high in autonomous repairing and dismounting efficiency, standardized in dismounting torque and low in maintenance cost.

The invention belongs to the technical field of mechanical maintenance tools, and discloses a dismounting device for a surface sealing assembly, which is used for dismounting the surface sealing assembly and comprises a tip cone, a driving sleeve shell, a supporting shell and a clamping jaw, the supporting shell is of a cylindrical structure, and the bottom of the supporting shell is an annular surface of a bearing seat shell matched with the surface sealing assembly; the driving sleeve shell and the clamping jaw extend into the cylinder from the top of the supporting shell, the driving sleeve shell is of a cylinder structure with a convex ring on the upper portion, the lower portion of the driving sleeve shell is arranged in the cylinder of the supporting shell, the clamping jaw extends into an inner cylinder of the driving sleeve shell from the upper portion of the driving sleeve shell, and the lower portion of the clamping jaw extends out of the bottom of the supporting shell. The bottoms of the clamping jaws are of outer jaw structures protruding in the circumferential direction. The middle of the clamping jaw is hollow, the clamping jaw is of a structure with the diameter gradually reduced from the middle to the bottom, and the tip cone is inserted into a hollow hole of the clamping jaw from the top of the clamping jaw. The device can effectively solve the problems that the operation space is extremely narrow, a thin-wall shell is prone to deformation, and quick-wear parts need to be protected.

The utility model discloses a device for quickly taking out a bearing of an air swelling shaft, and belongs to the technical field of mechanical maintenance. The device mainly comprises a base, a telescopic clamping mechanism is fixedly connected to the base and comprises a lead screw fixedly connected with the base, the top of the lead screw is fixedly connected with two sets of oppositely-arranged sliding bases, each set of sliding bases is provided with four sliding base grooves, one side of each sliding base groove is provided with a sliding base limiting hole, and a top plate is slidably connected into each sliding base groove. A connecting column is fixedly connected between the two top plates and slidably connected with the sliding seat limiting holes, a rotating grip rotationally connected with the lead screw is arranged at the bottom of the inner sliding seat, a grip is fixedly connected to one side of the rotating disc, and a plurality of limiting holes are formed in one side of the interior of the grip. The top plate can stretch out and draw back synchronously by rotating the grip so as to adapt to bearings of different sizes, and the pipeline is arranged in the top plate, so that a rust remover can directly remove rust at the joint of the bearing and the air swelling shaft conveniently.

The utility model discloses a cart arresting device for harbor machinery maintenance, which comprises a supporting strip, a moving groove is arranged on the inner side of the supporting strip, and a moving column is rotatably connected in the moving groove. The semi-arc-shaped blocks on the supporting strips abut against the wheels, then the movable columns are rotated through the cranks, the movable blocks can slide in the movable grooves, the semi-arc-shaped blocks are driven to move, adjustable clamping of the wheels of the cart is achieved, the situation that the wheels rotate to drive the cart to move can be effectively avoided, and use safety is improved; the shape of the semi-arc-shaped block is used for preventing the semi-arc-shaped block from colliding with a baffle, a pipeline and other components possibly existing above the cart wheel, so that the applicability can be improved, then through the cooperation of a reinforcing groove, a hollow plate, a reinforcing plate and a fixing bolt on the semi-arc-shaped block, the reinforcing plate can be stored or pulled out and fixed according to needs, and the practicability is high. And the wheel clamping and fixing effects are enhanced.

The auxiliary circle cutting device comprises a bottom plate, a vertical rod is arranged on one side of the upper surface of the bottom plate, a sliding sleeve connected with the vertical rod in an up-down sliding mode is arranged on the vertical rod in a sleeved mode, a transverse rod is arranged on one side of the sliding sleeve, and a sleeve is arranged at the end, away from the sliding sleeve, of the transverse rod. The bottom of the sleeve is rotationally connected with a U-shaped plate through a rotating shaft, a gun head sleeve capable of sliding in the length direction of the U-shaped plate is arranged at the bottom of the U-shaped plate, and the top end of the gun head sleeve is connected with the U-shaped plate through an adjusting structure. The cutting gun head and the steel plate are vertically fixed, the distance between the cutting gun head and the steel plate and the track of the cutting gun head are fixed, influences of human factors are reduced, the requirement for skills of welders is not high, the cutting speed is high, the rounding effect is good, and the welders can easily complete rounding work through simple tools.

The invention relates to the technical field of aero-engines, and discloses an engine rotor blade combination machining replacement tool for maintenance, clamping of an old blade tenon is completed through a jacking mechanism and a tenon groove, and a blade tip of an old blade is clamped through a blade back positioning block and a blade basin positioning block; the standard curved surface of the blade back positioning block and the standard curved surface of the blade basin positioning block are flush with the blade tip of the old blade at the same time, precise positioning and clamping of the blade are achieved, the assembly state of the blade in a rotor is restored, the blade tip size of the old blade is transmitted to a replacement tool, then a new blade is clamped to the tool, and association of the blade tip sizes of the new blade and the old blade is achieved. At the moment, the part, higher than the standard curved surface, of the new blade tip is the part needing to be machined and removed. The invention further discloses an engine rotor blade combination machining replacement machining method for maintenance, accurate positioning and clamping of the blade are achieved through the replacement tool, machine tool machining is replaced with manual plier repair, and the repair quality and efficiency are improved.

The utility model relates to the related technical field of electric control cabinets, in particular to a splitting machine rack and an electric control cabinet thereof, which comprise a rack, and the upper surface and the lower surface of one end of an overhaul opening of the rack are fixedly connected with a first rotating shaft. According to the splitting machine rack and the electric control cabinet thereof, the hinge shafts at the positions of the first rotating shaft and the second rotating shaft need to be inserted into the rack, at the moment, the electric control cabinet is completely fixed, when the electric control cabinet needs to be moved away around the first rotating shaft, the hinge shaft at the position of the first rotating shaft is pulled out, and otherwise, when the electric control cabinet needs to be moved away around the second rotating shaft, the hinge shaft at the position of the second rotating shaft is pulled out. When the electric control cabinet needs to be maintained, the hinge shaft at the position of the first rotating shaft is pulled out, so that a user can conveniently maintain the electric control cabinet, and the problems that the electric control cabinet and the rack are designed into a structure in the prior art, and mechanical maintenance cannot be carried out at the position obviously blocked by the electric control cabinet are solved. The electric control cabinet can be moved out of the rack to make room for maintenance.

The application discloses a mechanical maintenance clamp with adjustable hand holding part, and belongs to a mechanical clamp. The mechanical maintenance clamp comprises a clamp body and a tray. The front end of the clamp body is provided with a clamp head assembly. The rear end of the clamp body is provided with a hand holding assembly. The inner side of one end of the hand holding assembly is provided with a sliding rail. A sliding block is installed on the sliding rail. A clamping ring is arranged on the sliding block. An arc-shaped frame is further installed on the sliding block. The position of the arc-shaped frame corresponds to the position of the clamping ring. Four groups of extension rods are installed on the inner side of the other end of the hand holding assembly. Respective sleeve rings are installed on the extension rods. The sleeve rings correspond to the positions of the clamping rings respectively. The tray is provided with a clamping groove which is matched with the clamp body. The lower part of the tray is further provided with a bandage. The clamp body and the tray are connected with each other through a traction rope. The clamping ring and the arc-shaped frame are driven by the sliding block to reciprocate on the end of the hand holding assembly, so that the actual hand holding part position on the hand holding assembly of the clamp body can be adjusted, different personnel with different hand shapes can use the mechanical maintenance clamp, and personnel with different hand shapes and sizes can use the mechanical maintenance clamp with less labor.

The invention discloses a cabin central control room air conditioner backup system which comprises a central control room cabinet air conditioner (1), a machine maintenance room cabinet air conditioner (2), a first turn-off air brake (3), a second turn-off air brake (4), a third turn-off air brake (5), a fourth turn-off air brake (6), a fifth turn-off air brake (7), a first ventilation fence (8), a second ventilation fence (9), a third ventilation fence (10), an air distributor (11) and an air supply head (12). According to the engine room central control room air conditioner backup system, the central control room air conditioner is arranged in the machine repair room, the air pipe and the air distributor are used for supplying air to the central control room, air supply can be uniform, noise is reduced, people feel comfortable, a cabinet air conditioner is arranged in the machine repair room beside the central control room, and the central control room air conditioner and the machine repair room air conditioner are connected through the air pipe and the air brake. After the central control room air conditioner loses efficacy, the machine repair room air conditioner can provide air conditioning air for the central control room so as to guarantee normal work of equipment in the central control room and comfort of personnel.

This invention discloses a correction and alignment device for flange connection on a spin-drying drum, relating to the field of washing machine repair technology. It includes a flange one and a flange two, and a main body. A correction plate is fixedly connected to the surface of the main body, and a snap-fit ​​base is slidably connected to the bottom surface of the main body. A correction component for driving the main body to move is provided on the snap-fit ​​base. Two clamping rods are provided inside the main body, and openings for displacement of the two clamping rods are respectively provided on the surface of the main body. A mating rod is provided below each of the two clamping rods. It also includes two auxiliary components, both located within the main body. Through the arrangement of the two auxiliary components, the two clamping rods first undergo relative displacement and then move vertically upwards synchronously. Furthermore, it includes two mating components, which are respectively connected to the two auxiliary components. Through the mutual cooperation of the above structures, this invention improves the actual user experience after flange correction and ensures the flatness of the flange connection surface.

The utility model discloses a simple tool for adjusting the gap of a damper brake, which belongs to the technical field of mechanical maintenance, and comprises a wrench body, one side of the outer wall of the wrench body is fixedly connected with an abutting block and a pull block, one side of the bottom of the wrench body is fixedly connected with a limiting iron sheet, and the limiting iron sheet is fixedly connected with the abutting block. By arranging the limiting iron sheet, related parts of a tool can be firmly fixed to proper positions, it is guaranteed that the tool is kept in a normal working state in the whole adjusting process, the working efficiency is improved, meanwhile, the limiting iron sheet can prevent the tool from falling off, and the tool is prevented from being damaged. By arranging a standby limiting assembly, the safety of operators is guaranteed; the standby limiting assembly serves as an additional guarantee, when a limiting iron sheet breaks down or fails, the standby limiting assembly can play a role in time, the risk that the tool falls off is effectively reduced, and it is ensured that the tool is always kept connected with the damper brake in the adjusting process.

A method of controlled deposition of a liquid or semi-liquid sealant material is disclosed herein. The method includes the use of a template which allows the sealant material to be deposited as a bead onto a surface of a specific machine part. The placement and shape of the bead, including route and volume, can be controlled using the template. The placement and shape of the bead can correspond to features of the specific machine part. A machine repair kit configured for repair or assembly of the specific machine part can include the template and a sealant material compatible with the template.

The utility model discloses a ball pin dismounting tool, and relates to the technical field of automobile parts. Comprising an assembling base, a limiting clamp is detachably installed on the assembling base, and the limiting clamp is used for enabling a ball seat provided with a ball pin to stretch in and enabling the ball seat not to be separated from the limiting clamp when the ball pin is pulled out or ejected out; a detachable connecting structure is arranged between the assembling base and the limiting clamp so that the limiting clamp can be detachably installed on the assembling base. A dismounting mechanism is arranged on the assembling base, and the ball pin in the limiting clamp is dismounted through the dismounting mechanism. The dismounting tool solves the problems that an existing ball pin dismounting tool is poor in portability, depends on external energy, is insufficient in dismounting force, is inconvenient to operate and the like, effectively improves the dismounting efficiency of the tool, has better convenience and durability, and meets the requirements of high efficiency, portability and reliability of the tool in the maintenance and assembly process of modern machinery.

The utility model provides a ship power distribution box, which comprises a distribution box body, the distribution box body is provided with different partitions through fixedly connected physical partitions, a first circuit breaker is fixedly arranged in the first partition, and the first circuit breaker is at least used for supplying power to a grinding machine in a ship maintenance room; a second circuit breaker is fixedly arranged in the second subarea, and the second circuit breaker is at least used for supplying power to an exhaust valve grinding machine in a ship maintenance room; a third circuit breaker is fixedly arranged in the third subarea, and the third circuit breaker is at least used for supplying power to a ballast water treatment device monitoring unit of the marine engine room platform. According to the utility model, the number of distribution boxes and the length of cables are reasonably reduced, and the cost is reduced; the equipment is controlled in a centralized manner, and is very convenient to maintain and manage; the appearance is simple, the arrangement is compact, and the space is saved.

The present application relates to the technical field of aero-engine, and discloses a combined machining replacement tool for engine rotor blade in maintenance, which realizes the clamping of the tenon of the old blade through the jacking mechanism and the tenon groove, clamps the blade tip of the old blade through the back positioning block and the basin positioning block, makes the standard curved surface of the back positioning block and the standard curved surface of the basin positioning block flush with the blade tip of the old blade, realizes the accurate positioning and clamping of the blade, restores the assembly state of the blade in the rotor, transfers the size of the blade tip of the old blade to the replacement tool, and then clamps the new blade to the tool, so that the size correlation of the blade tip of the new blade and the old blade is realized, and the part of the new blade tip which is higher than the standard curved surface is the part which needs to be removed. The present application also discloses a combined machining replacement machining method for engine rotor blade in maintenance, which realizes the accurate positioning and clamping of the blade through the replacement tool, and realizes the machining of the replacement machine tool through manual repair, so that the repair quality and efficiency are improved.

The utility model relates to the technical field of equipment for kiln maintenance, in particular to a kiln mechanical maintenance tool which comprises a kiln body and a shell arranged on the ground, the shell is arranged below the kiln body, an adjusting mechanism is arranged in the shell, the adjusting mechanism comprises a sealing box, a sealing block, a fixing column, an L-shaped plate and an inclined plate, and the sealing box is connected with the fixing column. According to the sand sealing device, two parts of sand are circularly screened and alternately run, when the sand in the sand sealing groove contains a large number of impurities, leaks air and does not preserve heat any more, the screened sand is directly replaced, and the sand sealing device is simple in structure, convenient to operate and high in practicability. And the furnace body can continue firing operation without re-sealing after the sand is sieved, so that a large amount of sieving time is saved, the sand can be sieved without interrupting the firing of the furnace body, and the firing efficiency is improved.

The utility model discloses a simple jack, which belongs to the technical field of machine repair auxiliary tools and particularly comprises a support unit and a jacking unit. The jacking unit is vertically installed on the support unit, and an operation handle and a lifting unit are further installed on the jacking unit. The jacking unit is mainly composed of a vertical cylinder, a positioning sleeve and a screw, the positioning sleeve is installed at the top end of the vertical cylinder, the screw is inserted into the vertical cylinder, and the top end of the screw penetrates through the positioning sleeve and then extends out of the vertical cylinder; the lifting unit is installed at the top end of the screw. The hydraulic jack is simple in structure, convenient to operate, low in failure rate and easy to maintain, adopts a pure mechanical structural design, is lighter in weight and more convenient to carry in the whole structural design compared with a hydraulic jack with the same stroke, is made of common metal sections, and is convenient for maintenance team personnel to maintain. The hydraulic jack can be made of idle waste materials of a factory building, waste is turned into wealth, and the overall manufacturing cost of the hydraulic jack is far lower than that of a traditional hydraulic jack.