248 results about "Mechanical engineering technology" patented technology

The invention discloses an air flotation vacuum pump performance prediction system based on a specific calculation model, and relates to the technical field of mechanical engineering. Comprising a multi-parameter fluctuation sensing module, a weak feature sensitive extraction module, an abnormal coupling atlas construction module, an instability precursor identification module, a prediction model regulation and control module and a model adaptive optimization module, and carrying out fusion in a preset time window, constructing a multi-parameter synchronous fluctuation sensing model, and outputting a synchronous anomaly index. By introducing multi-parameter synchronous fluctuation perception, weak feature extraction and an abnormal coupling map, accurate identification and early warning of the early instability trend of the air floating vacuum pump are realized, and an intelligent system with real-time perception and closed-loop prediction capabilities is constructed by combining model regulation and control and a self-adaptive optimization mechanism, so that the operation safety and stability are improved.

The invention discloses a hand-held drill based on spiral airflow chip removal, and relates to the technical field of mechanical engineering, the hand-held drill comprises a machine body and a first assembly mounted on the machine body, the first assembly comprises a positioning frame for assisting rapid disassembly and assembly, the outer ring of the positioning frame is fixedly connected with a wedging body A, and the upper end face of the vertical line of the positioning frame is fixedly connected with a clamping body; through the arrangement of the first assembly, the clamping groove is matched with the wedging body B in a sliding clamping mode, the quick connecting groove is matched with the wedging body A in a sliding clamping mode, quick mounting of the quick connecting frame and the machine body is achieved, and the structure can be flexibly mounted or dismounted according to actual requirements when facing different drilling operation scenes and materials; after the operation is finished, the assembly can be detached from the machine body for independent and thorough cleaning, so that the influence on the next use caused by residual chippings is avoided; and meanwhile, during storage, the disassembled components and the fuselage can be separately stored, so that the storage space is saved, and mutual collision and damage among the components can be avoided.

The invention relates to the technical field of mechanical engineering, in particular to a reciprocating type vertical lifting device.Two stand columns are fixedly connected to the top of a rail car, ejector rods are fixedly connected to the tops of the stand columns, a dynamic lifting mechanism is fixedly connected to the side faces of the stand columns, and a fixed side plate is arranged in the middle of the dynamic lifting mechanism; winding drums are arranged on the side faces of the two sides of the fixing side plate, a bearing mechanism is arranged in the middles of the two stand columns, a bearing table is arranged in the middle of the bearing mechanism, a balance mechanism is arranged at the bottom of the bearing mechanism, a balance base is arranged in the middle of the balance mechanism, and a balancing weight fixing base is arranged at the bottom of the balance base; a deceleration block is arranged on the side face of the balance mechanism, capsizing moment generated by goods deviation and position is counteracted, the deviation problem of the bearing mechanism is solved, friction between the bearing mechanism and the stand column guide rail is reduced, the stress of the root of the stand column is reduced, and the maintenance period is prolonged.

The invention belongs to the technical field of mechanical engineering, particularly relates to a self-adaptive grabbing mechanical arm, and provides the following scheme aiming at the problems that a clamping mechanism with a fixed shape is difficult to effectively fit an irregular outline of an object, so that the contact area of grabbing points is small, the stress is non-uniform, and the grabbing is unstable easily, the self-adaptive grabbing mechanical arm comprises a base; the rotating table is movably connected to the upper part of the base; the lifting hydraulic cylinder is fixedly connected to the upper end face of the rotating table; the main arm beam is fixedly connected to the driving end of the lifting hydraulic cylinder; and the sliding seat slides on the main arm beam. According to the self-adaptive grabbing mechanical arm, through the self-adaptive grabbing module, the self-adaptive grabbing mechanical arm can be bent in a self-adaptive mode to be attached to object contours of different shapes and sizes, a grabbed object is tightly wrapped in cooperation with the clamping air bag piece which is inflated and expanded, and flexible and stable grabbing of a target object with the complex outer surface is achieved; and the grabbing adaptability and convenience are remarkably improved.

The invention relates to the technical field of port cranes and mechanical engineering, in particular to a crane structure fatigue life prediction method and system. The invention provides a crane structure fatigue life prediction method. The crane structure fatigue life prediction method comprises the steps that a finite element model of a crane structure is established, and a stress-load mapping relation matrix of crane structure nodes is generated through dimension reduction processing; collecting actual working data of the crane structure; performing data processing on the actual working data, and constructing an actual working load spectrum; based on the stress-load mapping relation matrix and the actual operation load spectrum, generating a stress-time history used for calculating the fatigue life structure node of the crane; and calculating the fatigue damage of the crane structure and predicting the residual fatigue life by combining a stress-life curve and an accumulative damage theory of a crane structure material. According to the method provided by the invention, online, real-time and accurate prediction and visualization of the fatigue life of all structures of the crane are realized, and a basis is provided for formulating an accurate operation and maintenance plan.

The invention relates to the technical field of mechanical engineering, and discloses a rotary table accurate alignment control method based on multi-modal sensing fusion, which comprises the following steps: firstly, acquiring multi-modal sensing data of a target rotary table, fusing the multi-modal sensing data into a multi-modal vector, and identifying a real-time pose; calculating a deviation value between a current position and a target position, determining a control stage, and constructing a hierarchical control process; then extracting control positioning data in the process, dividing to obtain an adjustment sequence, and generating a turntable servo motor driving instruction; then, a high-frequency disturbance value during instruction execution is collected, an anti-disturbance control quantity is calculated, and a precision unbalance point is detected; and finally, identifying the precision deviation value of the unbalance point, carrying out cooperative alignment with a preset precision index to obtain a parameter group, and generating an alignment control strategy. According to the invention, the control precision and the adaptive capability of the rotary table in a complex application environment can be improved.

The invention relates to a quick connector and a production mold thereof, and relates to the technical field of mechanical engineering, and the quick connector comprises a first pipeline, a second pipeline and a connecting shell made of an engineering plastic material. The corrosion resistance is improved through the connecting shell made of the engineering plastic, the connecting shell is made of the engineering plastic, a metal hoop in the prior art is replaced, and the problem of metal corrosion is solved from the material level. The hoop directly wraps the connecting end of a pipeline, does not need to be exposed to the external environment, can resist erosion of water vapor and corrosive media for a long time, ensures the stability of a connecting structure, and solves the problems of clamping force attenuation and leakage hidden danger caused by corrosion of a traditional metal hoop. Tool-free rapid operation is achieved through the limiting mechanism, and through the synergistic effect of a limiting sliding rod, a first spring and a first ball, when the connecting shell is pulled upwards, constraint of an annular limiting hole to the first ball is relieved, the first spring rebounds to drive the limiting sliding rod to be away from the second pipeline, and pipeline insertion is facilitated.

The invention discloses a shafting vibration characteristic analysis method and system based on elastohydrodynamic lubrication, and relates to the technical field of mechanical engineering.The method comprises the steps that the entrainment speed, the time-varying curvature radius and the contact load at a contact point in a gas distribution-oil supply cam pair are determined; respectively inputting the entrainment speed, the time-varying curvature radius and the contact load at the contact point into a friction analysis model in an elastohydrodynamic lubrication state, and calculating a time-varying curve of the total interfacial friction force of the gas distribution-oil supply cam pair in the whole working cycle; based on time-varying friction excitation corresponding to any moment in the change curve, determining a system excitation vector of the gas distribution-oil supply cam pair by using interface friction as a key connection quantity through experimental testing and simulation modeling technologies; according to the system excitation vector and the structure parameters of the camshaft system, establishing a camshaft system torsional vibration characteristic coupling analysis model considering the interface elastohydrodynamic state; and solving the shaft system torsional vibration differential equation set to obtain the influence rule of the time-varying friction on the instantaneous vibration characteristics of the camshaft system.

The invention belongs to the technical field of computer aided design and mechanical engineering, and relates to a parameterized three-dimensional automatic modeling and assembling system and method for a rolling bearing. The system comprises a parameter input module used for obtaining bearing design parameters; the part modeling module is used for generating an inner ring model, an outer ring model, a rolling body model and a retainer model which comprise preset assembly reference surfaces according to the parameters; the assembly logic module is used for automatically positioning the respective three-dimensional models of the multiple parts of the rolling bearing in a three-dimensional space and constructing a complete bearing assembly so as to generate a complete rolling bearing; and the auxiliary function module is used for providing model file management, modeling process visualization and data output functions. The method has the beneficial effects that the traditional dependence on a solid geometric surface is replaced by abstract association of the reference surface and the coordinate system, and high automation, stabilization and parameterization of the modeling and assembling process are realized.

The invention discloses a telescopic device deformation prediction and control system based on multi-modal fusion deep learning, and relates to the technical field of mechanical engineering. The system comprises a data acquisition module, a preprocessing module, a data fusion module, a deep learning prediction module, a control decision module and a feedback optimization module. The data acquisition module acquires multi-modal data by using a distributed sensor array; the preprocessing module processes the data to ensure the quality; the data fusion module fuses the data to generate comprehensive data; the deep learning prediction module outputs a predicted deformation value by means of an LSTM and CNN fusion architecture; the control decision module performs hierarchical control according to a comparison result of a predicted value and a safety threshold and comprises a fuzzy control unit optimization instruction; and the feedback optimization module optimizes model parameters and control strategies online by using a reinforcement learning algorithm, so that high-precision prediction and self-adaptive control of deformation of the telescopic device are realized, and the structural safety and the system intelligence level are improved.

The invention discloses a mechanical-electrical-sensing integrated quick-change interface and a quick-change method, and belongs to the technical field of mechanical engineering. The quick-change connector comprises a connector driving end, a connector driven end and a locking force increasing mechanism, and high locking force is achieved on the premise of miniaturization by adopting the principle that electromagnetic drive is combined with conical surface force increasing. The electrical connection and protocol conversion module integrates a tail end slave station, supports conversion of various communication protocols such as RS-485, CAN, EtherCAT and PWM, and realizes plug and play of a tail end tool; and the sensing module integrates a visual sensor and a six-dimensional force sensor and provides real-time environmental vision and force / torque feedback. Through deep integration of structure, electricity and sensing, the problems that an existing quick-change interface is complex in structure, poor in protocol compatibility and lack of autonomous sensing capacity are solved, and the flexibility, reliability and intelligent level of on-orbit fine operation of the space robot are remarkably improved.

The utility model relates to the technical field of mechanical engineering, and discloses a ground intelligent pressurization driving device which comprises a shell, a PLC is fixedly connected to the left side of the shell, a data transmission line is fixedly connected to the driving end of the PLC, a motor is fixedly connected to the rear side of the data transmission line, and the motor is fixedly connected to the left side of the shell. The driving end of the right side of the motor is fixedly connected with a coupler, the right side of the coupler is fixedly connected with a three-way connector, the rear side of the three-way connector is fixedly connected with a water tank, the right side of the three-way connector is fixedly connected with a multi-stage centrifugal booster pump, and the multi-stage centrifugal booster pump is fixedly connected with a pressure pipeline. According to the utility model, the motor enables water in the water tank to enter the multistage centrifugal booster pump under the action of the three-way connector, the water enters the pressure pipeline after pressure is applied to the water, the pressure transmitter controls the flow rate, the two electromagnetic valves control the water flow entering the channel, and the PLC can perform timing, quantitative and circulating pressurization on any channel.

The utility model provides a kind of bracket device of production mine electric wire cable equipment force arm adjustment, belong to mechanical engineering technical field, including support mechanism, including pedestal, the column of being fixed in the top of the pedestal, the support column of being fixed in the top of the pedestal, the connecting plate of being fixedly installed in the top of the column, and the lifting lug of being fixed in the surface of the connecting plate;Wire reel fixing mechanism, including the support assembly of being movably installed in the lateral wall of the column, the centring assembly of being rotated in the lateral wall of the column, and the locking assembly being arranged in the surface of the centring assembly.The utility model is designed by reverse thread in the both ends of screw rod of centring assembly, both sides slider synchronous movement when rotating handle, ensure the distance of clamp to wire roll center, realize that wire reel is always located in the central position of wire roll, so that axial force distribution is uniform, wire laying precision is improved, wire roll deformation is also avoided simultaneously, and service life is improved.

The utility model relates to the technical field of mechanical engineering, and discloses an elastic hot-pressing suite structure which comprises an outer rod, a hot-pressing head and a clamping hoop, the surface of the outer rod is sleeved with an anti-abrasion shaft sleeve and a buffer spring, the buffer spring is arranged at the bottom of the anti-abrasion shaft sleeve, an installation cylinder is fixedly installed at the bottom of the outer rod, and the installation cylinder is arranged in the outer rod. The inner wall of the mounting cylinder is in threaded connection with a hot pressing head, a heating core is movably mounted in the outer rod, the surface of the outer rod is fixedly connected with a hoop through a limiting screw rod, and a temperature sensor is arranged in the hoop. According to the utility model, the temperature sensor is placed in the hoop, and the hoop is fixedly arranged on the surface of the outer rod, so that a user can disassemble and replace the temperature sensor as required, and different types of temperature sensors can be installed according to different hot-pressing task requirements by replacing the temperature sensor, thereby reducing the maintenance cost and time; and the accuracy of temperature measurement is ensured, so that the control precision of the whole hot-pressing system is improved.

The utility model provides a cooling device of a rock drill testboard, and relates to the technical field of mechanical engineering. The cooling device of the rock drill test bench comprises a water tank, a water cooler, a test bench rack, an air cooler and a hydraulic system, the test bench comprises a punched head and a drilling tool, the drilling tool is connected with the punched head, a first water guide pipe is arranged on the drilling tool, and a second water guide pipe is arranged on the punched head; the water tank is connected with the water cooler, the water cooler is connected with the first water guide pipe and the second water guide pipe, and the first water guide pipe and the second water guide pipe are both connected with the water tank. The water cooler is also connected with the hydraulic system; the water tank is connected with the air cooler which is connected with the water tank. The cooling water is conveyed to the drilling tool and the punched head through the first water guide pipe and the second water guide pipe to cool the high-temperature parts, the used cooling water is not directly discharged, but is cooled through the air cooler and then flows back into the water tank again, a cyclic utilization closed-loop system is formed, and waste of the cooling water is reduced.

The vertical shaft derrick plastic energy dissipation protection beam structure disclosed by the application comprises a plastic energy dissipation component, a support component is fixed to the upper side of the plastic energy dissipation component through a plurality of bolts, a soft steel energy dissipation support is fixed to the two sides of the support component, the other sides of the two soft steel energy dissipation supports are fixed to steel columns, a plurality of buffer supports are further arranged, the buffer supports are fixed to the lower side of a steel beam, the steel beam is arranged above the support component, and the buffer supports correspond to the support component. The energy dissipation protection beam has the advantages of simple structure, convenient installation, wide application in the technical field of impact resistance protection in civil engineering and mechanical engineering, effective absorption and dissipation of impact energy, cooperation of multiple dissipation components and protection components, greatly improved energy dissipation capacity of the protection component, easy installation and replacement of the plastic energy dissipation components, low cost, and high protection efficiency.

This utility model provides a positioning device for improving the transmission accuracy of a torque converter assembly, belonging to the field of mechanical engineering technology. It includes a mounting mechanism and a mounting component. The mounting component has a chassis and a mounting groove formed on the chassis. The torque converter assembly is detachably mounted in the mounting groove. The positioning mechanism includes a drive component and a limiting component. This utility model, through improved structural design of the positioning device, effectively solves the problems of low positioning accuracy, unstable clamping, and easy damage to the workpiece surface in traditional torque converter assembly positioning methods. It adopts a flexible protection mechanism combining an elastic contact surface and a buffer pad layer, which not only improves clamping stability but also reduces the risk of wear on the torque converter assembly surface. Simultaneously, by using a knob to drive the limiting component, it achieves simultaneous improvement in operational convenience and positioning accuracy, effectively ensuring the transmission performance and service life of the torque converter assembly and meeting the needs of high-precision assembly and efficient production.

The application discloses a kind of automatic adjustment repair core device, system and method, it is connected to mechanical arm in mechanical engineering technical field, including base, is connected to mechanical arm;Electric control mechanism, including drive assembly and telescopic part;Drive assembly is connected to base;Telescopic part can be telescopic movement relative to the base by drive assembly;Rotary mechanism, including guide column and rotating disc;Guide column is rotatably connected to base;Rotating disc has with guide column connection guide portion, and with telescopic part hinged connection hinged portion;Drive assembly drives the linear reciprocating movement of the telescopic part, to drive the rotating disc relative to the base rotation;Repair core mechanism, including repair core rod connected to rotating disc, repair core rod is rotated under the driving of the rotating disc to remove the joint of sand core by preset angle;It can realize driving repair core rod rotation preset angle, can remove the joint of different positions.

The utility model provides a kind of anti-drop type mechanical engineering hoist device, belong to mechanical engineering technical field, to solve the hoist device of existing, part relies on C-shaped lifting hook and slides, part is operated complicated with elastic tab anti-drop, and spring is frequently used and is prone to damage to function attenuation problem. Including lifting appliance main part, hook, inner hook piece, anti-drop block, knob, limiting block, anti-drop assembly and adjusting assembly, the hook is fixedly installed in lifting appliance main part bottom;The inner hook piece is arranged in hook interior;The anti-drop block is fixedly connected in inner hook piece interior;The knob is rotatably connected in inner hook piece interior;The limiting block is provided with two groups, two groups The limiting block is slidably connected in inner hook piece interior;The anti-drop assembly is arranged in hook interior;The adjusting assembly is arranged in inner hook piece interior.The utility model has the advantages of reliable anti-drop, simple operation, maintenance directly and the like.

The utility model provides a working arm for an industrial robot, which belongs to the technical field of mechanical engineering and comprises a bearing mechanism, a base, a first motor adaptively mounted at the bottom of the base, a first connecting rod fixedly connected to the output end of the first motor through a coupler, and a fixing plate fixedly connected with the outer end face of the first connecting rod. The driving mechanism comprises a second motor installed on the outer surface of the fixing plate in a matched mode, a guide plate fixedly connected with the output end of the second motor, a clamping assembly used for fixing the materials and a quick detaching assembly used for detaching the clamp. According to the utility model, by designing the quick release assembly which comprises the fixed block, the sliding columns, the limiting columns and the like, the clamping jaw can be quickly disassembled and assembled without a tool, and a user only needs to press the sliding columns on the two sides, so that the limiting columns can move from one end of the limiting groove to the other end of the limiting groove, the fit state with the limiting block is released, and the mounting block is easily taken down; and the clamp replacement process is simplified, and the working efficiency and flexibility are improved.

The present application relates to the technical fields of mechanical engineering, and proposes a hoist head sheave operation parameter adjustment method and system based on radial runout compensation, which comprises: collecting radial runout displacement signals and steel wire rope tension signals of the head sheave in real time by using a multi-dimensional sensor array; performing empirical mode decomposition on the radial runout displacement signals to decouple low-frequency eccentric components and high-frequency deformation components of the head sheave; calculating a dynamic load change rate of the head sheave to nonlinearly correct the low-frequency eccentric components and generate a rotational speed adjustment parameter of the head sheave; generating a resonance spectrum of the head sheave, calculating a similarity between the resonance spectrum and a preset standard health spectrum, identifying a resonance main frequency band of the high-frequency deformation components when the similarity is lower than a preset similarity threshold, determining a damping stiffness adjustment parameter of a head sheave bearing seat, and combining the rotational speed adjustment parameter and the damping stiffness adjustment parameter to perform adaptive adjustment on the head sheave. The present application can improve the operation stability of the head sheave system.

This invention relates to the field of mechanical engineering technology, and provides a pressure servo valve and a device using the pressure servo valve. The pressure servo valve includes a proportional electromagnet, a pilot valve core, a pilot valve sleeve, a pilot spring, a valve body, a main limiting structure, a main valve core, and a main spring. The valve body has a first space and a second space. The pilot valve and the main valve core are respectively fitted into the first space and the second space. The pilot valve core passes through the pilot valve sleeve and is connected at one end to the proportional electromagnet and at the other end to the pilot spring. One end of the main valve core is equipped with the main limiting structure, and the other end of the main valve core is connected to the main spring. In this invention, the pilot stage uses a proportional electromagnet and spring control, and the spring force feedback of the pilot spring forms a variable throttling orifice for linear displacement control. The power stage itself forms a pressure closed loop, which makes the main valve core structure simple, requires less coaxiality, and has the advantages of good zero-position stability and low processing cost.

The invention relates to a dust removal and noise reduction type scraped car disassembling device and method, and belongs to the technical field of mechanical engineering, and the method comprises the following steps that the dust removal and noise reduction device is arranged and comprises a discharging chute internally provided with an elastically-connected induction impact plate; the dust suppression cover covers the outlet of the chute and is internally provided with an upper-layer nozzle group and a lower-layer nozzle group; the monitoring part is mounted on the back surface of the sensing impact plate and comprises a broadband accelerometer and a temperature sensor; the valve group unit is mounted on the outer wall of the dust suppression cover and comprises an upper-layer high-speed valve and an upper-layer pressure gauge for controlling the upper layer and a lower-layer high-speed valve and a lower-layer flow meter for controlling the lower layer; the challenge of complex material form is overcome, and the upper-layer nozzle group is adjusted according to fine particle flux to generate a basic fog curtain; when the flux of coarse particles exceeds a threshold value, the lower-layer nozzle set is instantly started to generate high-pressure jet flow, the basic fog curtain is specially used for settling dust, the high-pressure jet flow is specially used for penetrating and disturbing airflow, and the contradiction that spray is overhead and excessively wetted is solved.

The utility model provides extruding device of tire processing belongs to mechanical engineering technical field, including bearing mechanism, including bottom plate, fixed plate of fixed installation in bottom plate outer surface, material box of setting in bottom plate outer surface, and the material box intercommunication's discharge pipe, and the spray head of discharge pipe intercommunication, the fixed mechanism includes the fixed frame of fixed installation in bottom plate outer surface, sets up in fixed frame one side and is used for the orientation subassembly of tire positioning, and the drive subassembly of tire rotation. The utility model discloses through the mutual cooperation of orientation subassembly and drive subassembly, has realized the automatic positioning of different specifications tire, stable clamping and even rubberizing, the first motor cooperation thread bar and internal thread block in orientation subassembly, can automatically adjust the roller spacing, can adapt to a variety of tire size, and drive subassembly makes the rotation of limiting block through second motor, makes tire steady rotation, ensures the evenness of rubberizing and operation stability, has improved tire extruding efficiency and product quality.

The utility model relates to the technical field of die-cutting mechanical engineering, in particular to an eccentric fine adjustment device for a die-cutting tool, which comprises a die-cutting tool body and an eccentric fine adjustment mechanism arranged at the end of the die-cutting tool body, a gear is arranged at one end of the die-cutting tool body, and positioning holes are formed in the axes of the two ends of the die-cutting tool body. The eccentric fine adjustment mechanism is composed of a fixing base, a rotating shaft, a locking nut, a fine adjustment gear and a guide assembly. The die cutting tool overcomes the defects in the prior art, the die cutting tool can be connected with die cutting equipment in a matched mode through the fixing base, the rotating shaft can rotate on the fixing base, the rotating shaft can be driven to rotate synchronously by rotating the fine adjustment gear, and the die cutting tool body can be driven to conduct eccentric fine adjustment when the rotating shaft rotates. Clamping or loosening of the rotating shaft can be achieved by rotating the locking nut, the conical ejector block can be in butt joint with a positioning hole in the end of the die cutting tool body, and the die cutting tool body is guided to be accurately inserted into the butt joint opening.

This utility model relates to the field of mechanical engineering technology and discloses a fixture for producing risers. It includes a fixed frame, a hydraulic telescopic device fixedly connected to the top of the fixed frame, a sliding plate fixedly connected to the drive end of the hydraulic telescopic device, a sliding block fixedly connected to one side of the sliding plate, a fixed plate on the inner wall of the fixed frame, a vertical guide rail on one side of the fixed plate, and the inner wall of the sliding block slidably connected to the outer wall of the guide rail. A bent rod is hinged to each end of the sliding plate, and a connecting block is fixedly connected to one end of each bent rod. In this utility model, by activating the hydraulic telescopic device, the drive end of the hydraulic telescopic device can drive the sliding plate to move. The sliding plate can slide on the guide rail via the sliding block. The movement of the sliding plate can drive the bent rod to rotate, and the rotation of the bent rod can drive the connecting block and the gripper to move.

The present application relates to the technical field of mechanical engineering, and particularly relates to a connecting device and a turner, a connecting device for connecting a turner and a tractor and adjusting the position between the turner and the tractor, comprising: a connecting assembly, the connecting assembly comprising a first connecting piece and a second connecting piece, the first connecting piece and the second connecting piece being connected with the turner and the tractor respectively, adjacent ends of the first connecting piece and the second connecting piece being connected in a sliding and inserting mode, and the first connecting piece and the second connecting piece being limited by a limiting piece after being inserted; and at least one damping assembly, the damping assembly being arranged close to the inserted part of the first connecting piece and the second connecting piece, and the damping assembly being arranged on the first connecting piece and / or the second connecting piece, so that the technical problem that the length of the supporting rod between the turner and the tractor cannot be adjusted in the prior art is solved, and the supporting rod is prevented from being broken due to torsion or vibration.

The utility model provides self-cleaning equipment of a cleaning device of mining belt type conveying equipment, and belongs to the technical field of mining mechanical engineering. Comprising a fixing frame, a servo motor installed on the outer side of the fixing frame in a matched mode, a driving roller fixedly connected to output of the servo motor through a fixing coupler, a conveying belt arranged on the outer surface of the driving roller in a sleeving mode, a supporting roller arranged on the inner surface of the other end of the conveying belt in a sleeving mode, and an installation block fixedly connected to the outer surface of the fixing frame. And the scraper is arranged on the inner side of the mounting block and is matched with the conveying belt for use. Through cooperation of the conveying equipment body and the cleaning mechanism, operation and stop of the cleaning assembly can be automatically controlled according to the speed of the conveying belt under the condition that an additional driving source is not additionally arranged, unnecessary cleaning of the scraper when impurities can automatically fall off is avoided, abrasion to the surface of the scraper is reduced, and meanwhile the cleaning efficiency of the scraper is improved. And the effect that mine material transportation work is conducted stably is ensured.

The utility model discloses a fixing support capable of effectively reducing vibration of a cantilever type centrifugal pump bearing box, which relates to the technical field of mechanical engineering and comprises a first steel plate, a second steel plate used for forming a support body structure is arranged on the upper surface of the first steel plate, and two supporting legs used for supporting the whole support are fixedly connected to the lower surface of the second steel plate. The surfaces of the two supporting legs are each provided with a jackscrew used for achieving up-down fixing and left-right adjusting of the support, the opposite back faces of the two supporting legs are each provided with a nut, in the operation process of the centrifugal pump, the support restrains vibration displacement of the bearing box through the structural strength of the support and a stable connecting mode, vibration is transmitted and dispersed to the whole support and a pump base, and therefore the vibration displacement of the bearing box is restrained. By means of rigid connection of the support and the pump base, the vibration amplitude of the bearing box is reduced, vibration is effectively restrained, operation stability is improved, impact and abrasion of vibration to key components such as a mechanical seal and a bearing are reduced, and the service life of the components is effectively prolonged.

The invention relates to the technical field of mechanical engineering, discloses a herringbone gear planetary gear train inherent characteristic analysis method considering gear ring flexibility, and aims to solve the problem that in the prior art, flexible structure characteristics of an inner gear ring are neglected, so that an analysis result is inaccurate during herringbone gear planetary gear train inherent characteristic analysis. When the inner gear ring is modeled, the inner gear ring is discretized into a plurality of sections of uniformly bent gear ring micro-section units, and the motion differential equation of the inner gear ring is constructed through modeling, so that the flexibility characteristic of the inner gear ring is fully considered when the motion differential equation set of the herringbone gear planetary transmission system is constructed; and a more accurate data basis is provided for subsequent solidity analysis. In addition, the structural characteristics of the herringbone gear are considered, the herringbone gear is divided into the left side and the right side for modeling operation, the accuracy of data needed by calculation is improved, and more practical and more accurate inherent characteristic analysis of the herringbone gear planetary transmission system is achieved.