98 results about "Machine maintenance" patented technology

The invention belongs to the technical field of workshop scheduling and maintenance combination, and particularly relates to a flexible job workshop production scheduling and machine maintenance combination optimization method and system. The method comprises the following steps: S1, acquiring basic information of flexible job shop production scheduling and machine maintenance joint optimization; s2, taking minimization of the total cost of a production system as a target function, and constructing a flexible job shop production scheduling and machine maintenance joint optimization model; s3, converting the flexible job shop production scheduling and machine maintenance joint optimization model into a Markov decision process, and respectively defining states, actions, state transition and rewards of production scheduling and machine maintenance; s4, designing a joint optimization method based on a digital twinning and double-layer reinforcement learning algorithm based on the Markov decision process, and obtaining a trained agent through training; and S5, applying the trained intelligent agent to an actual flexible job shop production scheduling and machine maintenance joint optimization problem.

The invention provides a high-voltage power-down display control method, a vehicle control unit, engineering machinery and a medium, and relates to the technical field of electric engineering machinery. The method comprises the steps that a power-off signal of the engineering machine is acquired, the power-off type of the engineering machine is determined according to the power-off signal, and the power-off type comprises normal power-off and abnormal power-off; when the power-off type of the engineering machinery is normal power-off, normal power-off logic is executed, and a display screen of the engineering machinery is controlled to be turned off after high-voltage power-off of the whole vehicle is detected; and when the power-off type of the engineering machinery is abnormal power-off, sending adhesion fault prompt information to a display screen of the engineering machinery, and controlling the display screen of the engineering machinery to be closed after detecting that the whole vehicle is in high voltage. According to the method, visualization of the high-voltage state of the whole vehicle can be achieved through the display screen, and therefore the safety of engineering machinery maintenance is improved.

The utility model discloses a special maintenance tool for an electric switch machine, which comprises a detection steel sheet with a rectangular structure, the width of the detection steel sheet is 20mm, and the thickness of the detection steel sheet is 4mm; the equipment key is used for opening a machine cover of the electric switch machine; the sleeve and the solid wrench are used for adjusting the adjusting screw at the tail part of the indication rod; the equipment key is fixed on the upper surface of the detection steel sheet, the sleeve is fixed on the lower surface of the detection steel sheet, and the sleeve and the equipment key are located at the same end of the detection steel sheet; the solid wrench is a groove arranged on the side wall of the detection steel sheet. According to the electric switch machine maintenance tool, the functions of four common maintenance tools in the maintenance operation of the electric switch machine are ingeniously integrated, the tool is convenient to carry, and the working efficiency can be remarkably improved in actual operation. The integral design of the tool is of a T-shaped structure, so that the transverse pen part and the vertical pen part of the tool can be used as a force arm handle during operation, and the convenience of operation is greatly enhanced.

The utility model relates to an auxiliary tool for maintenance of a sealing skin of a sintering pallet, which is applied to the technical field of maintenance of sintering machines, solves the problems that the existing cutting surface is uneven, air leakage is easy to exist at the bonding position, and meanwhile, the problem that the sintering pallet is scratched and secondarily damaged, and comprises a workbench, at least two clamping plates and a fixing piece, the clamping plate located at the lowest end is installed on the workbench, one side face, in the length direction, of each clamping plate is arranged in an inclined face mode, and the inclined faces of every two adjacent clamping plates are located on the same plane. The fixing pieces are distributed in the circumferential direction of the clamping plates, each fixing piece comprises a lead screw and a fastening nut connected to the lead screw in a threaded mode, the bottom end of each lead screw is vertically fixed to the upper end face of the clamping plate located on the lowest layer, and the top end of each lead screw upwards slides and extends to the position above the clamping plate located on the highest layer; the inclined plane cutting device has the advantages that the inclined plane can be directly cut out, the inclined plane is smooth, follow-up glued sealing leather is facilitated, operation is convenient and fast, and the maintenance efficiency is improved.

The utility model discloses agricultural machinery maintenance equipment, and belongs to the technical field of agricultural machinery. The device mainly comprises a body. The storage bin is fixed in the main body and used for adding lubricating oil, one side of the interior of the storage bin is slidably connected with a piston plate, and one side of the storage bin communicates with two corrugated pipes; the clamping mechanism is positioned on one side of the main body and is used for clamping the saw blade; the rotary smearing mechanism is located on one side of the clamping mechanism and used for maintaining the saw blade; according to the agricultural machinery maintenance equipment, a first handrail is gradually pushed, at the moment, the first handrail drives a connecting plate to move towards one side through a sliding block, the connecting plate drives a piston plate to move towards one side through a connecting column, and then lubricating oil in a storage bin enters a connecting shaft through a connecting pipe; lubricating oil in the connecting shaft enters the rotating plate and then is in contact with the sponge pad through the through hole to soak the sponge, so that the cotton cloth stained with the lubricating oil is prevented from being manually held, and the phenomenon that the lubricating oil drips is avoided.

The utility model discloses an equipment maintenance device, and relates to the technical field of maintenance, and the equipment maintenance device comprises a bearing assembly, a moving device, an adjusting mechanism and a handrail; the bearing assembly comprises a chassis and a platform movably arranged on the chassis, and the platform is used for bearing equipment; the moving device is arranged on the chassis and used for driving the bearing assembly to move; the adjusting mechanism is arranged on the chassis and used for driving the platform to ascend and descend. The handrail is detachably installed on the bearing assembly. According to the equipment maintenance device, lifting of the platform can be achieved through the adjusting mechanism, manufacturing and mounting errors of the copying and printing integrated cabinet are made up, it is ensured that the platform and a tray in the copying and printing integrated cabinet are in butt joint without height difference, and therefore it is ensured that the copying and printing integrated machine is pulled out and pushed in smoothly, and maintenance convenience of the copying and printing integrated machine is improved.

The utility model belongs to signal equipment tool technical field, specifically provides a signal machine column sealing device, including the cap, plunger body, telescopic buckle and drive mechanism, the plunger body is connected in cap below, telescopic buckle is installed in the plunger body inside, the plunger body lateral wall is equipped with the buckle hole matched with telescopic buckle, drive mechanism is used for driving telescopic buckle and is stretched out the buckle hole or shrink to the plunger body inside. The signal machine column sealing device provided by the utility model seals the high column signal machine concrete machine column top by plunger body and cap, no longer adopts the concrete, simplifies the plugging construction, effectively prevents the influence signal equipment normal work because of plugging leakage. The plunger body lateral wall is equipped with controllable telescopic buckle, can be with the machine column inner wall and is pasted, prevents the device from falling through stress mode, and the signal machine maintenance is convenient when dismantling.

The invention discloses an intelligent management system for supplying and recycling cutters and tools, which comprises an intelligent host, at least one cutter cabinet and at least one tool cabinet which are electrically connected with each other, and the intelligent host is provided with a scanning and distinguishing device, a touch display input device and a wired / wireless internet connection line, the intelligent host is provided with a material picking program module, a return program module, an old-to-new module, a replenishment program module, a push early warning notification module and a data analysis and report generation module, after an employee distinguishes and confirms, material picking and return or replacement of an old knife / tool with a new knife / tool can be carried out, a manufacturer can scan a bar code of the knife / tool according to replenishment, replenishment can be carried out immediately, and the replenishment efficiency is improved. In addition, the manufacturer can also receive the push early warning notice to carry out machine maintenance or cutter / tool replenishment, and the manager receives data analysis and report generation so as to understand the use condition of the related cutter / tool, so that the omnibearing cutter / tool management and control effect is achieved.

The utility model relates to the technical field of welding machines, in particular to a novel welding machine which comprises a welding machine body, a shell and a heat dissipation net, the welding machine body comprises a bearing plate, a side plate is arranged at one end of the upper side of the bearing plate, and a wiring operation plate is arranged at the other end of the upper side of the welding machine body. A mounting frame is arranged at the inner side positions of the side plate and the wiring operation plate, a circuit component is arranged at the inner side of the mounting frame, a pipeline heat dissipation component is mounted at the inner side of the side plate, a bayonet is formed in the lower end position of the outer side of the shell, and sliding grooves are formed in the lower end positions of the side plate and the wiring operation plate; a fixing plate is arranged in the sliding groove. The pipeline heat dissipation component blows air to the lower side of the circuit component to dissipate heat, the heat dissipation uniformity is improved, the heat dissipation effect of the circuit component is facilitated, the welding machine body and the shell are rapidly detached through the bayonet and the spring bolt, and the welding machine is convenient to maintain.

The present application relates to physical vapor deposition process, especially to the PVD-AlN machine maintenance after the method of re-computer. The re-computer method, including the following steps S1: setting the cavity temperature is 780~820 DEG C and 630~670 DEG C in turn for baking;S2: keep the cavity temperature is 630~670 DEG C, two times into argon and nitrogen, the second time into argon and nitrogen when setting Source DC is 2800~3200;S3: continue to pass into argon and nitrogen, the temperature drops to 450~550 DEG C. The re-computer method, let the cavity of PVD-AlN machine in 780~820 DEG C and 630~670 DEG C in turn for baking, two times of baking removes the moisture and impurities of the cavity respectively;Again continue to pass into argon and nitrogen to remove the organic compounds in the cavity and cooling to 450~550 DEG C.

The utility model relates to a sintering machine, apply in sintering machine maintenance technical field, solved in the process of replacement to the sintering trolley of trouble, hoist trolley operation is unstable, trouble sintering trolley is easy to incline, fall, and there is the problem of hidden danger of safety, including trolley track, sintering trolley and unloading auxiliary frock, unloading auxiliary frock includes erecting on the support frame of trolley track, the flap that rotates and connects on the support frame one end and hydraulic push cylinder, the telescopic end of hydraulic push cylinder is hinged in the other end lower end surface of flap, the main part of hydraulic push cylinder is hinged in the support frame, the upper end surface of flap is provided with the fixing piece for fixing damaged sintering trolley, have trouble sintering trolley fixed firm, operation is stable, can solve the safety problem of sintering machine trolley on -line replacement, reduce the safety hidden danger of field work environment, improve the effect that replacement efficiency.

The utility model discloses a vending device for vacuum-packaged prefabricated dishes, which belongs to the technical field of vending machines and comprises a shell frame, and a food making component, a food delivery component, a machine maintenance window, a food outlet, a payment window and a food ordering screen are mounted in the shell frame. The food making assembly comprises a bag opener, a squeezer, a heater and a fetching clamp which are sequentially arranged from bottom to top, the food delivering assembly comprises a dinner plate storage box and a food delivering device, a plurality of dinner plates are stored in the dinner plate storage box, the food delivering device is provided with a fixed part and a sliding part, and the fixed part and the sliding part are connected with each other. The fixing part is installed on the side wall of the shell frame and located below the bag opener. According to the selling device for the vacuum-packaged prefabricated dishes, a plurality of functional assemblies such as food conveying, meal making and meal delivering are integrated, all the assemblies are matched with one another, automation of the whole process from storage, conveying, making to meal delivery of the prefabricated dishes is achieved, manual intervention is greatly reduced, and the manual maintenance frequency and cost are reduced.

This invention provides a lifting structure for a grinding machine, including a frame and a head. The lower end of the frame is connected to the head via a support arm, and both ends of the support arm are hinged to the frame and the head, respectively. The head can rotate around the support arm. A tilting mechanism is connected between the support arm and the upper end of the frame. The frame, support arm, and tilting mechanism are connected in a triangle. The tilting mechanism drives the support arm to rotate around the frame. This invention is used for grinding machines and can stably lift and tilt the head, making it suitable for vibrating working environments. This invention forms a stable triangular connection structure between the frame, support arm, and tilting mechanism, providing excellent rigidity and stability for the lifting mechanism. The tilting mechanism drives the head to tilt, lifting it off the ground, facilitating the movement of the grinding machine. After the head is tilted, the grinding discs are exposed, making it easy for operators to replace or maintain them, thus improving the convenience of grinding machine maintenance.

The invention discloses a water ring vacuum pump cleaning device, and relates to the technical field of pump machine maintenance, the water ring vacuum pump cleaning device is characterized in that a positioning seat is rotatably connected with a rotating disc, the rotating disc and an impeller of a water ring vacuum pump are coaxially arranged, and the positioning seat is provided with a resistance pressing plate elastically abutted against and matched with the impeller; the cleaning assembly is arranged on the rotary disc through a support and comprises a guide rod, a screw, a threaded sleeve, a spraying module and a servo motor, the guide rod is slidably arranged on the support in the axial direction of the impeller, the spraying module is arranged at one end of the guide rod, the screw is parallel to and fixedly connected with the guide rod, the threaded sleeve is rotationally connected to the support and is in threaded connection with the screw, and the servo motor drives the threaded sleeve to rotate. The screw rod, the guide rod and the spray-washing module move in the axial direction of the impeller, and the spray-washing module enters an interval space between two adjacent blades of the impeller and sprays cleaning liquid to the surfaces of the blades and the inner wall of a shell of the water ring vacuum pump; and the stepping motor drives the turntable to intermittently rotate on the positioning seat, so that the spray-washing module sequentially enters each interval space of the impeller for cleaning operation.

The application discloses a kind of simulation machine maintenance quality evaluation method, system, electronic equipment and storage medium. Including establishing the standardized task library configured with evaluation definition parameter and calibration parameter;According to evaluation configuration and historical operation quality file extraction evaluation task set, generate evaluation task sequence;Collect evaluation process key data and generate evidence chain bag, carry out edit distance comparison to operation sequence and standard operation sequence, obtain behavior trajectory consistency score;Calculate task weight based on calibration parameter, combine scoring factor and abnormal behavior correction factor to calculate each evaluation task score and total score;According to task score and total score, generate multidimensional operation quality portrait vector, and fuse and update with historical operation quality file, output maintenance quality evaluation report and maintenance operation correction instruction or maintenance strategy adjustment parameter.The application can improve the standardization degree of simulation machine maintenance quality evaluation, improve maintenance quality and efficiency.

1. Name of the product in this design: Graphical User Interface for Maintenance and Control System of Cutting Machine for Electronic Equipment. 2. Purpose of this design: For use in the control system of a cutting machine. 3. The key design features of this product are its graphical user interface content. 4. The picture or photo that best illustrates the key design points: Design 1 front view. 5. Other views are omitted as they are standard design. 6. Design 1 is designated as the basic design. 7. Use of graphical user interface: for cutting machine control systems. 8. Human-computer interaction methods of the graphical user interface: Clicking the "Machine Maintenance" button in the main view of Design 1 will enter the Design 1 interface change state diagram 1; clicking the "OK" button in the Design 1 interface change state diagram 1 will enter the Design 1 interface change state diagram 2; clicking the "Rotate and Align" button in the Design 1 interface change state diagram 2 will enter the Design 1 interface change state diagram 3; clicking the "Skip Cut" button in the Design 1 interface change state diagram 3 will enter the Design 1 interface change state diagram 4; clicking the "Help" button in the Design 1 interface change state diagram 4 will enter the Design 1 interface change state diagram 5; clicking the "Machine Maintenance" button in the main view of Design 2 will enter the Design 2 interface change state. Figure 1; Click the "OK" button in Design 2 interface change state figure 1 to enter Design 2 interface change state figure 2; Click the "Pixel Size Adjustment" button in Design 2 interface change state figure 2 to enter Design 2 interface change state figure 3; Click the "Machine Maintenance" button in the main view of Design 3 to enter Design 3 interface change state figure 1; Click the "OK" button in Design 3 interface change state figure 1 to enter Design 3 interface change state figure 2; Click the "Focus Maintenance" button in Design 3 interface change state figure 2 to enter Design 3 interface change state figure 3; Click the "D / T Focus Calibration" button in Design 3 interface change state figure 3 to enter Design 3 interface change state figure 4.

The utility model relates to the technical field of maintenance boxes, and discloses a maintenance box of a steam turbine, which comprises a box body and universal wheels fixedly mounted at four corners of the lower end of the box body, handrails are fixedly mounted on two sides of the side wall of the box body, a movable cover is rotatably mounted at the upper end of the box body, and the movable cover is fixedly mounted on the box body. When tools in the maintenance box need to be used, the movable cover is opened firstly, the upper storage bin can be pulled out along the sliding groove through the pull ring, at the moment, the upper storage bin slides away from the upper end of the lower storage bin along the sliding groove, the upper storage bin can be pulled out along the sliding groove, and the lower storage bin can be pulled out through the pull ring. The lower storage bin is automatically pushed out upwards under the action of a plurality of first springs, the first springs can push the lower storage bin upwards along the inner wall of the box body till the upper end of the lower storage bin is flush with the upper storage bin, at the moment, the two storage bins for containing tools are unfolded at the same time, and after the upper storage bin is pulled open, the lower storage bin can automatically slide outwards to be flush with the upper storage bin. And the materials and tools in the two storage bins can be conveniently found.

The present application relates to a kind of three-phase alternating current switch machine action lever conversion force detection method, it is characterized in that: including three-phase alternating current asynchronous motor (1), deceleration and motion conversion component (2), switch machine action lever (3), rotational speed or angle detector device (4), sensor (5), processing unit (6) and mode selection hardware (7), the driving output shaft of three-phase alternating current asynchronous motor (1) is connected with deceleration and motion conversion component (2) axle;Three-phase alternating current asynchronous motor (1) drives deceleration and motion conversion component (2) by.Three-phase alternating current switch machine action lever conversion force detection method, so as to measure and calculate the conversion force on switch machine action lever in the process of switch machine conversion continuously real-time, guide turnout, switch machine maintenance, adjustment, repair, so that turnout conversion jam does not occur, reduce the influence to train operation order.

The utility model discloses a phosphorus pentachloride horizontal crusher, which belongs to the technical field of chemical machinery, and comprises an operation table, a horizontal linkage crushing component for carrying out horizontal double-roller crushing treatment on phosphorus pentachloride raw material solids, and an air suction sealing component for absorbing toxic gas generated by the raw materials and enhancing the sealing property, the air suction sealing assembly comprises a feeding air suction assembly and a sealing inflation assembly. The horizontal linkage smashing assembly is installed at the upper end of the operation table, the feeding air suction assemblies are installed at the upper end and the lower end of the horizontal linkage smashing assembly, and the two sealed inflation assemblies are installed at the side end of the horizontal linkage smashing assembly and distributed in a bilateral symmetry mode. In this way, the device is simple in structure and easy to implement, the smashing effect is improved, the maintenance rate of daily maintenance machines is reduced through the energy-saving machine, gas absorption and sealing protection are increased, and the quality of finished products is improved.

The utility model provides a partition door lifting air cylinder disassembling and assembling jig, and relates to the technical field of etching machine maintenance. The partition door lifting air cylinder disassembling and assembling jig comprises a supporting part and a fixing part. The supporting part is configured to abut against the wall, provided with the first opening, of the main body. The fixing part is fixedly connected with the supporting part, and the fixing part is configured to be fixed with the partition door; when the partition door is fixed to the fixing part in a suspended mode, at least part of the supporting part exceeds the first opening. By means of the operation space above the machine table, two persons can disassemble and assemble the partition door telescopic air cylinder above and below the machine table, lifting of the partition door telescopic air cylinder is facilitated, and connecting bolts between the partition door telescopic air cylinder and the machine table can be conveniently operated and disassembled. The problems that in the prior art, the space is narrow during disassembly and assembly, the partition door telescopic air cylinder can be disassembled and assembled only by one person, the partition door telescopic air cylinder is prone to falling off, and the damage risk of personnel and an etching machine is increased are solved.

The invention provides an air extractor and semiconductor processing equipment. The air extractor comprises a travel switch, a bypass and a controller. The travel switch is arranged at the position of a cavity cover of the process cavity and used for obtaining a first signal indicating opening of the cavity cover when the cavity cover is opened. One end of the bypass is connected between the process chamber and a hot trap, and the other end of the bypass is connected between the hot trap and a sucking pump. A first valve used for opening or closing the bypass is arranged in the bypass. And the controller is configured to open the first valve in response to the received first signal, so that tail gas generated in the process chamber and the hot trap is pumped out by the sucking pump through the bypass. The device can be used for weakening upward return of gas carried by rising of hot airflow in a front-end pipeline and a hot trap in the open cavity maintenance stage, so that the influence of odor diffusion on the environment is prevented, and the health hazard risk brought to machine maintenance personnel under specific conditions is reduced.

The invention discloses an chemi-mechanical pulp transfer screw press suitable for double bleaching towers, and relates to the technical field of chemi-mechanical pulp treatment equipment, a rotating shaft is arranged in the transfer screw press, the diameter of the rotating shaft is obliquely arranged from small to large from left to right, and a spiral stirring blade is fixed on the rotating shaft; the feeding mechanism is arranged on the upper left portion of the two transfer screw press bodies. The dehydration mechanism is connected with the two transfer screw press bodies; the pushing mechanism is connected with the squeezing pipe; the first mounting frame is arranged between the pushing mechanism and the squeezing pipe; the rapid switching of the feeding pipelines is realized, and the continuous dehydration operation of the chemi-mechanical pulp in the double-bleaching-tower system is ensured; online cleaning during blockage is facilitated, and the downtime is shortened; accumulated slurry is thoroughly removed, and residues are prevented from affecting the subsequent process; the two sets of independent transfer screw press bodies are arranged, flexible switching is achieved through the material distribution mechanism, it is ensured that the system can still operate continuously when a single machine is maintained or cleaned, and the overall operation continuity is improved.

The invention discloses an aero-engine maintenance program design method, and the method comprises the steps: obtaining a to-be-maintained aero-engine, carrying out the evaluation of the safety cycle life of the aero-engine, and judging whether the to-be-maintained aero-engine meets the TBO demands or not based on the safety cycle life of the aero-engine. And if yes, entering the next step, otherwise, generating a machine safety cycle life risk report and sending the report to the research and development department. Performing maintenance task analysis on the aero-engine, determining a maintenance task, performing maintenance resource development and maintenance technology development based on the maintenance task to obtain an engine maintenance program comprising a plurality of maintenance steps, and calculating the direct maintenance cost of the engine according to the maintenance cost of each maintenance step. And finally, comparing and analyzing the direct maintenance cost of the local machine and the competitive product maintenance cost, and judging whether the maintenance cost of the local machine is competitive or not. And if yes, the aero-engine is maintained according to the engine maintenance program. Otherwise, a cost machine maintenance cost risk report is generated and sent to the research and development department.

The utility model relates to the technical field of pin removing tool structures, and discloses a rotating machine maintenance pin removing device which comprises a box body, three first fixing blocks are fixedly connected to the interior of the box body, limiting plates are rotationally connected to the interiors of the three first fixing blocks, and fixing rods are fixedly connected to the ends, away from the first fixing blocks, of the limiting plates. A first fixing block is fixedly connected to the inner side of the box body, a rotating plate is rotatably connected to the interior of the first fixing block, a grip is slidably connected to the interior of the box body, a reset assembly is fixedly connected to the inner side of the grip and comprises two fixing discs, the outer sides of the two fixing discs are fixedly connected to the outer side of the grip, and limiting rings are fixedly connected to the inner sides of the fixing discs. According to the pin removing device, the pin removing head can be prevented from being collided, scraped or subjected to other physical damage when not in use, and the pin removing head is further stably fixed in the box body through cooperation of the limiting plate, the fixing rod and the sliding groove and is prevented from being damaged due to shaking in the box.

The invention provides a multifunctional on-machine maintenance platform for a high-pressure casting die and a control method.The multifunctional on-machine maintenance platform for the high-pressure casting die comprises a base, the base is located on one side of a die bridge of a die casting machine, a lifting mechanism is arranged on the base, and a lifting platform is arranged on the lifting mechanism; the lifting mechanism is used for controlling lifting of the lifting platform, a fixed foot board is arranged on the lifting platform, a telescopic mechanism and a telescopic platform are arranged on the fixed foot board, the telescopic platform is in sliding connection with the fixed foot board, and the telescopic mechanism is used for controlling the telescopic platform to stretch out of the fixed foot board. Therefore, a maintenance platform is formed above or below the green columns. The mode that a vertical lifting platform is arranged in the lower portion of a traditional die bridge is broken through, an extension ladder type maintenance platform structure extending out of a die-casting machine operation platform is provided, and the problems that a traditional fixed maintenance platform can only cover the single height, the operation space is limited, and potential safety hazards exist when workers operate in gaps are thoroughly solved.

The utility model relates to the field of coal machine maintenance, and discloses an overhaul workbench for coal machine maintenance, which comprises a placing seat, a lifting assembly is arranged at the bottom end of the placing seat, the inner side wall of the placing seat is in contact with a placing plate, the outer side wall of the placing seat is provided with a rolling assembly, the lifting assembly comprises a fixed seat, and the fixed seat is fixedly connected with the lifting assembly. The inner wall of the bottom end of the fixing base penetrates through and is rotationally connected with a telescopic pedal, a sliding rod is hinged to the tail end of the telescopic pedal, the side wall of the inner side of the fixing base is rotationally connected with a limiting wheel, and the inner wall of the top end of the fixing base is elastically connected with a limiting block through a reset spring. According to the lifting device, the telescopic pedal is matched with related parts, a maintainer can conveniently adjust the height of the containing plate only by stepping on the pedal, the requirements for different maintenance scenes and heights of the maintainer are met, and the lifted position can be stably fixed through the ingenious effect of the limiting wheels and the limiting blocks.

The invention discloses a maintenance-free gear box mechanism of a coal mining machine, belongs to the technical field of gear boxes, and provides the following scheme that the maintenance-free gear box mechanism comprises gear box equipment, a pressure balance mechanism is arranged on the gear box equipment, and a lubricating oil spraying assembly is further arranged on the gear box equipment; the plurality of chain wheel structures of the lubricating oil spraying assembly are in transmission connection through a transmission chain of the spray head adjusting assembly; gas is inflated into the gearbox equipment through the pressure adjusting assembly, so that the interior of the gearbox equipment is in a micro-positive pressure state, external dust and other pollutants can be effectively prevented from entering the gearbox equipment, and meanwhile, when the interior of the gearbox equipment expands due to heat and contracts due to cold, the gearbox equipment is prevented from being damaged. And the pressure regulation and control starting assembly opens the pressure regulation assembly to automatically regulate the internal pressure of the gearbox equipment, so that the purpose of real-time self-adaptive regulation can be achieved according to the internal pressure of the gearbox equipment, and the operation reliability of the gearbox equipment under different working conditions can be remarkably improved.

The utility model discloses a blanking device and a blanking machine provided with the blanking device, the blanking device comprises a blanking assembly, the blanking assembly comprises a rack, a static die head and a crankshaft, and the static die head and the crankshaft are arranged in the rack; a connecting rod is mounted on the crankshaft, the other end of the connecting rod is connected with an arranged connecting seat through a shaft pin, and the connecting seat is connected with a movable die head arranged in the rack; the static die head is further provided with a guide column, and the movable die head is driven to slide along the guide column through rotation of the crankshaft so that the movable die head can move directionally. The punching machine comprises a discharging frame and a stacking frame, and a punching device is installed on the discharging frame; the blanking assembly is arranged on the discharging frame, a first driving part is further arranged below the discharging frame, and the crankshaft is driven to rotate through the first driving part. Due to the fact that the number of times of maintenance of the punching device is reduced, the number of times of maintenance of the punching machine is reduced.

The utility model relates to the technical field of heading machines, and discloses a heading machine maintenance-free first conveyor device which comprises a front chute and a rear chute, the upper end of the front chute and the upper end of the rear chute are connected with the same upper connecting plate, at least one pair of connecting holes are symmetrically formed in the center of the upper end of the upper connecting plate, and pin shafts are installed in the connecting holes. The upper end of the upper connecting plate is provided with a pin shaft, the outer side of the pin shaft is connected with an elastic check ring, the lower end hole of the front chute and the lower end hole of the rear chute are connected with a lower connecting plate, the upper end of the upper connecting plate and the upper end of the lower connecting plate are provided with threaded holes in a reserved mode, and threaded connecting pairs are installed in the threaded holes. The assembly precision is improved, the shear-resistant bearing capacity is greatly improved through the design of the high-strength pin shafts, long-term maintenance-free operation is achieved, the working efficiency and the production benefits of equipment are improved, meanwhile, parts are concentrated in the chute connecting inner space, and compared with a traditional flange connecting frame, the installation space is saved.

The embodiment of the utility model provides a climbing ladder for machine maintenance, and relates to the technical field of climbing equipment. The climbing ladder for machine maintenance comprises a frame body and a reinforcing assembly. The frame body comprises a first supporting frame, a second supporting frame and a top frame, the first supporting frame and the second supporting frame are arranged on the two sides of the top frame at intervals in the x direction, the reinforcing assembly comprises a reinforcing beam extending in the x direction, and the two ends of the reinforcing beam are connected with the first supporting frame and the second supporting frame respectively. The reinforcing beam can move in the y direction and / or the z direction relative to the first supporting frame and the second supporting frame, the reinforcing beam can be adjusted to adapt to process machines of different appearance structures, and good applicability is achieved.