188results about How to "Uniform load" patented technology

The invention discloses a chain park energy consumption load management optimization method and system based on a clustering algorithm, and relates to the technical field of load management optimization, and the method comprises the steps: collecting the data of a plurality of chain parks, and constructing a load feature vector through a multi-source feature fusion technology; on the basis of load similarity and geographical distribution characteristics between the chain gardens, modeling energy interaction and association characteristics between nodes of the chain gardens by using a graph structure model to form a collaborative load network; segmenting a load curve according to a time sequence and introducing a time weighting coefficient for clustering by aiming at the time dependence characteristic of the energy consumption load of the chain park; a multi-objective collaborative optimization clustering algorithm is designed, load clustering and optimization objectives are combined, and optimal clustering schemes in different scenes are solved; and generating a distributed scheduling strategy adapted to scene change according to a clustering result and a load coordination relationship between the chain and the garden. According to the invention, energy sharing and load balancing between the chain and the park are realized, and the economical efficiency and environmental protection benefits of the regional energy system are greatly improved.

The invention discloses a non-contact adsorption porous ceramic suction cup and a manufacturing method thereof, a special gas circuit structure is arranged in a base, blowing airflow and adsorption airflow between the suction cup and an adsorbed workpiece are balanced, and non-contact adsorption clamping is realized by utilizing the comprehensive effect of gas suspension and vacuum adsorption prepressing; according to the invention, gas flows out on the whole porous ceramic surface, that is, a layer of gas film exists between the porous ceramic plate and an adsorbed workpiece, so that the adsorbed workpiece is uniformly subjected to the action of suspension force, and the problem of cracking of the workpiece caused by non-uniform stress in the non-contact adsorption process is further reduced; the vacuum adsorption holes distributed in the base are used for adsorption, the adsorption force is strong and stable, and the adsorption force equivalent to that of a common contact type porous ceramic suction cup can be obtained; due to the fact that the borne load is even, stable gaps can be formed between the porous ceramic plates, a precise plane is further formed, and high precision retentivity is achieved.

The invention relates to the technical field of power distribution room inspection, in particular to an inspection control system based on a power distribution room inspection robot. Comprising a server, an inspection analysis module and an inspection control module, the inspection analysis module performs real-time monitoring and comprehensive analysis on each power distribution room, equipment in the power distribution room and the environment of the power distribution room to obtain a monitoring index value; generating a trend curve of monitoring index values along with time change through a time sequence analysis method, and performing graphic analysis on the curve to effectively judge the routing inspection priority of the power distribution room; the inspection control module carries out analysis according to the inspection value of each power distribution room and the historical maintenance record and historical inspection times of each inspection robot, and can comprehensively know the operation stability and inspection work efficiency of the inspection robot; according to the matching value of the inspection robot and the current task number, the tasks of the inspection robot can be updated in real time, load balance of each robot is ensured, and the high-risk inspection task of the distribution room is processed preferentially.

The invention provides a PtRu-based composite bifunctional catalyst and a preparation method and application thereof, the PtRu-based composite bifunctional catalyst comprises a carrier and a load loaded on the carrier, and the carrier comprises a graphitized carbon carrier; the load comprises platinum ruthenium-based metal particles and a compound with a chemical formula of HxMO3, wherein M comprises W or / and Mo. According to the PtRu-based composite bifunctional catalyst disclosed by the invention, the metal PtRu plays a role in resisting CO poisoning, and the HxMO3 plays a role of a proton acceptor, so that a hydrogen oxidation reaction is promoted. Meanwhile, the HxMO3 can strengthen a difunctional mechanism of a carbon monoxide oxidation reaction, and the CO poisoning resistance of the catalyst is improved. In addition, the graphitized carbon carrier with a specific graphite microcrystal size has good high-potential corrosion resistance and metal dispersibility, and metal agglomeration and performance degradation of the catalyst caused by high-potential corrosion of the carrier are greatly slowed down.

The invention discloses an electric vehicle charging scheduling method based on an improved optimization algorithm and a terminal. The method comprises the steps that a user side terminal system needs to judge whether a user sends a charging request or not according to the state of charge of an electric vehicle battery, if yes, a data acquisition unit obtains the daily charging demand, position information, power distribution network operation conditions, regional charging station information and related data information of a regional traffic network of the electric vehicle, and if not, the user side terminal system sends the charging request; if yes, returning to the previous step for cyclic judgment; the data processing and algorithm calculation unit establishes an optimization model with the minimum power grid load fluctuation and the minimum economic time cost of user charging as targets, inputs the obtained data into the model, and solves a target function by adopting a non-dominated sorting whale optimization algorithm with an elitist strategy; the optimal charging scheme of the electric vehicle is obtained; and the transmission and application unit sends charging scheme suggestions to users, so that ordered charging scheduling of the electric vehicles in the region is realized.

The invention relates to the field of mining blasting, and discloses a method for reducing muck pile granularity through fine blasting, which comprises the following steps of: 1, increasing explosive unit consumption and adopting continuous charging to adapt to the rock hardness characteristic of a difficult-to-explode area; 2, adjusting the hole pitch and the density coefficient by adopting an equilateral triangle hole distribution mode; 3, setting inter-hole time delay and inter-row time delay to control the propagation path of blasting waves; fourthly, the position of the initiating explosive package is adjusted, double-layer detonation is achieved, and detonation energy is evenly distributed in the hole depth direction; and 5, after rectification in the step 1 to the step 4 is completed, detonating is started. According to the method, uniform distribution and effective control of blasting energy in the ore body are realized by finely controlling unit consumption of explosives, a hole distribution mode, delay parameters and cartridge bag position setting, generation of large rocks is remarkably reduced, and the mining efficiency and the resource utilization rate of a mine are improved.

The invention discloses a ship loader material loading scheduling planning method based on a three-dimensional point cloud, and the method comprises the steps: obtaining the total volume of a to-be-loaded material pile, and the single-time material grabbing volume and unloading stacking area of a ship loader; according to the capacity of the ship warehouse, the total volume of the to-be-loaded material pile and the single-time material grabbing volume and unloading stacking area of the ship loader are combined, a loading planning scheme of the first layer of materials is calculated and generated, and then loading of the first layer of materials in the ship warehouse is completed; the loadable position is determined through the three-dimensional point cloud data of the loaded materials in the ship warehouse, the loading planning scheme of the next layer of materials is calculated in combination with the residual volume of the to-be-loaded material pile and the volume of the materials grabbed by the ship loader at a time, and then loading of the next layer of materials in the ship warehouse is completed. And the material loading dispatching work of the ship loader is repeated until the to-be-loaded material pile is loaded or the ship warehouse capacity reaches the upper limit. The material loading uniformity and loading efficiency of the ship loader can be improved.

The utility model relates to a tool for testing a semiconductor device, which aims at solving the technical problems that the pressing force is inconvenient to control and the contact pressure between a chip and a pin is easy to be overlarge and further the chip is damaged in the current mode of manually pressing a clamping bracket, and comprises a test assembly of which the upper end surface is detachably provided with a test part, a tray assembly is detachably installed at the top of the testing part, the testing part comprises a testing plate, buffer mechanisms are fixedly arranged on the upper end face of the testing plate at equal intervals, positioning holes are formed in the four corners of the upper end face of the testing plate, and the buffer mechanisms are used for achieving the buffer effect when a chip is pressed down for detection. Positioning holes are formed in the upper end face of the tray body, positioning inserting rods which are inserted into the positioning holes in a matched mode to achieve the positioning effect are arranged at the four corners of the lower end face of the tray body, the buffering mechanism comprises V-shaped elastic pieces which are symmetrically arranged in a crossed mode, the V-shaped elastic pieces are connected, and the chip pressing detection device has the advantage of achieving the buffering effect in the chip pressing detection process.

The invention belongs to the technical field of battery energy storage control, and discloses a battery energy storage system optimization control system and method of a power grid. The method comprises the following steps: numbering batteries in the battery energy storage system to obtain battery serial numbers; acquiring health state data of a battery in the battery energy storage system; preprocessing the health state data in unit time to obtain preprocessed data; dividing a geographic area where the battery energy storage system is located, and obtaining sub-area serial numbers; obtaining the generating capacity and the electric energy transmission distance of different sub-regions in unit time; establishing a digital model based on the battery serial number, the preprocessed data, the subarea serial number, the generating capacity and the electric energy transmission distance; setting target conditions based on the digital model, wherein the target conditions comprise the minimum number of idle batteries, the highest total battery health value and the highest electric energy average storage rate; and the human resource cost of battery replacement of the distributed battery energy storage cabinet is reduced.

The invention discloses a reverse planet roller screw rod based on an integral planet carrier. The reverse planetary roller screw rod comprises a long nut, a screw rod shaft, a roller, an integral planet carrier and a sliding bearing assembly, the integral planet carrier designs a traditional left-side split planet carrier and a traditional right-side split planet carrier into an integral structure, and therefore the phenomenon that the left side and the right side of an original split structure are tiny and asynchronous due to a gear transmission gap is avoided. The integral planet carrier is provided with the rollers, so that the rollers are uniformly borne, the transmission stability and reliability are improved, meanwhile, the sliding bearings are additionally arranged between the integral planet carrier and the rollers and between the integral planet carrier and the lead screw shaft, friction is reduced, and the transmission efficiency is improved.

The mold pressing equipment for producing the concrete baking-free bricks capable of recycling the building waste residues comprises a base, a pair of conveying frames which are longitudinally arranged are fixedly installed on the base, a plurality of supporting plates are conveyed between the tops of the pair of conveying frames at intervals, and supports are fixedly installed on the two sides of the base; a transversely-arranged mounting frame is fixedly mounted at the top of the support, a movable plate capable of transversely moving is mounted in the mounting frame, three lifting openings are transversely formed in the movable plate, a liftable template is elastically mounted in the three lifting openings, the upper surface of the template is flush with the upper surface of the movable plate, a plurality of mold cavities are evenly distributed in the template, and the mold cavities are communicated with the lifting openings. And opening and closing mechanisms for synchronously opening and closing the plurality of mold cavities are arranged in the mold cavities. According to the equipment, after one-time mold pressing is completed, the next-time mold pressing process can be rapidly carried out without waiting for the charging process, the efficiency is greatly improved, the automatic conveying process of baking-free brick supporting plates can be achieved, and continuous production can be achieved.

The invention discloses a rain-erosion-resistant ceramic-based composite material as well as a preparation method and application thereof, and belongs to the technical field of wave-bearing and wave-absorbing ceramic-based composite materials. According to the preparation method, a BN interface layer is deposited on the surface or in internal gaps of an Al2O3 fiber preform or a SiC fiber preform through a chemical vapor infiltration process, and then a reinforced matrix is introduced into the fiber preform with the BN interface layer through the chemical vapor infiltration process and a polymer impregnation and cracking process. The ceramic-based composite material prepared in the invention has good wave-absorbing performance, mechanical performance and rain erosion resistance; the method can be applied to preparation of aircraft hot end components.

The invention relates to the technical field of network communication, in particular to a communication line artificial intelligence switching method based on a communication network, which comprises the following steps: uploading position information of communication base stations and associated targets of the communication base stations, and constructing an interactive topology of the communication base stations, monitoring a user sending the communication request in the communication base stations and a communication base station where a communication request target user is located in real time; when a communication user sends a new communication request, an ideal communication path is designed based on the communication request, then a communication path queue is produced according to the busy degree of the communication path, finally, difference comparison is performed on each communication path in the communication path queue and the ideal communication path, and output of the communication path configured by the communication request is completed. Therefore, the load balance of each communication base station in the communication network is effectively ensured by adopting the mode of carrying out configuration switching on the communication line path before communication establishment is started.

The utility model relates to a transmission power takeoff assembly, and provides a transmission power takeoff assembly with a shared lubricating structure in order to overcome the defects that an existing power takeoff is tedious in operation and high in cost due to the fact that lubricating oil is independently injected into the existing power takeoff, or the problem that an existing lubricating system is low in lubricating efficiency. The power takeoff lubricating system comprises a right lubricating oil pipe connected with an oil pump, a power takeoff lubricating oil pipe connected with the right lubricating oil pipe, a third oil duct, a fourth oil duct, a fifth oil duct and a sixth oil duct. A first oil pipe hole is formed in the connecting position of the transmission shell and the rear cover body and located above the intermediate shaft rear bearing. A second oil pipe hole is formed in the end, away from the rear cover body, of the rear cover shell and located above the power takeoff input shaft. A power takeoff mounting hole is formed in the end, close to the power takeoff body, of the rear cover shell, and the first oil duct, the second oil duct, the third oil duct, the fourth oil duct, the fifth oil duct and the sixth oil duct communicate in sequence and are jointly used for lubricating the interior of the power takeoff body and the interior of the transmission body.

The utility model provides a vehicle-mounted multimedia player shell, which comprises a shell body, and a display screen mounting part is arranged on the front side of the shell body. A radiator mounting part is arranged on the rear side of the shell body; the display screen mounting part comprises more than three supporting tables which are arranged on the shell body and are used for supporting the display screen; a concave cavity extending from the front side to the rear side is formed in the shell body, the radiator mounting part is arranged on the concave cavity, and through radiating holes are formed in the bottom of the concave cavity. According to the scheme, through the transverse positioning grooves and the longitudinal positioning grooves formed in the frame, when the display screen is installed, the display screen can be rapidly clamped into the frame; the supporting table is arranged and can be uniformly stressed to bear the display screen; the concave cavity is arranged, so that the heat dissipation space and the heat dissipation area of the shell can be increased; the heat dissipation holes are formed, so that the radiator can be conveniently mounted, and the heat dissipation efficiency is further improved.

The invention discloses an equal-interval deployment method and device for gas compression stations, electronic equipment and a storage medium, and relates to the technical field of natural gas transportation. The method comprises the following steps: firstly, acquiring a to-be-deployed number and a deployment interval of to-be-deployed compressor stations, and first position information of the first to-be-deployed compressor station in a to-be-deployed pipeline; and according to the first position information and the initial deployment spacing, determining second position information of a next to-be-deployed compressor station of the first to-be-deployed compressor station in the to-be-deployed pipeline, taking the second position information of the next to-be-deployed compressor station as new first position information, and returning to execute the operation of deploying the next to-be-deployed compressor station according to the first position information and the initial deployment spacing. And a step of determining second position information of a next to-be-deployed compressor station of the first to-be-deployed compressor station in the to-be-deployed pipeline, and finally, generating a target deployment result according to the position information of each to-be-deployed compressor station, and outputting the target deployment result. In this way, automatic deployment of the compressor stations of the whole pipeline to be deployed is achieved.

The utility model discloses an auxiliary frame body bushing mounting hole polishing tool, and belongs to the technical field of tools. The tool comprises a rack; the workbench is used for fixing the auxiliary frame to be polished; the rotating mechanism comprises a rotating shaft fixed to the rack, a bearing arranged on the rotating shaft in a sleeving mode and a bearing seat matched with an outer ring of the bearing, the center of the workbench is fixed to the bearing seat so that the workbench can rotate around the rotating shaft, and a cam bearing of the supporting structure is used for supporting the workbench under the condition that the workbench rotates around the rotating shaft; a limiting mechanism; the left handle mechanism and the right handle mechanism are installed on the workbench, and any one of the left handle mechanism and the right handle mechanism comprises a limiting pin capable of ascending and descending, a spring for driving the limiting pin, a guide shaft and a handle; and under the condition that the workbench rotates to the position above the limiting seat, the limiting pin is clamped into the hole of the limiting seat under the action of the spring so as to lock the position of the workbench. According to the tool, through cooperation of a rotating structure, a supporting structure and a limiting structure, workpieces can be overturned without being carried.

An axial positioning structure for the main shaft gear of a multi-speed transmission, relating to the field of transmission technology, employs a helical gear axial positioning method to meet the positioning requirements of the gear's axial force. In this structure, the main shaft is supported at both ends by tapered bearings; the gear assembly includes a first gear, a second gear, a third gear, a gear sleeve, a hexagonal key, and a shaft retaining ring, all using a floating assembly configuration; the internal spline of the gear sleeve has a missing tooth structure; the spline retaining ring bears the axial force, and the hexagonal key provides circumferential restraint to the spline retaining ring, while the shaft retaining ring prevents the hexagonal key from disengaging; the third gear is restrained directly by the inner ring of the bearing via the hexagonal key.

The invention discloses a distribution network scada-based power distribution network self-healing method and system, and the method comprises the steps: carrying out the data collection according to a scada system, and carrying out the preprocessing; and carrying out feature extraction on the preprocessed data, and detecting an abnormal condition by using an optimized LOF algorithm. And fault isolation is carried out, a power grid topological structure is reconstructed, and self-healing of the power distribution network is realized. According to the distribution network scada-based power distribution network self-healing method and system provided by the invention, feature extraction is performed on the data, and the optimized LOF algorithm is introduced to be combined with the genetic algorithm to perform anomaly detection, so that the accuracy and efficiency of fault detection are remarkably improved, and a fault point can be quickly identified. Through an SCADA system and an automatic switch, automatic isolation of faults is realized, linear programming and an ant colony algorithm are combined, a power grid reconstruction scheme is optimized, load balance is ensured, and reliability and stability of a power grid are improved.

The invention discloses a method for automatically delivering and loading cement clinker in bulk by a vehicle. The method comprises the following steps: S1, extracting vehicle information; s2, truck loading information is calculated; s3, the loading information is verified; and S4, automatic truck loading. The cement clinker loading device has the advantages that 1, cement clinker can be uniformly and quantitatively loaded, and the conditions of material scattering, vehicle tie bar collision, non-uniform loading and large weight deviation are avoided; 2, whether loading is compliant or not can be checked, automatic loading is carried out only when loading is compliant, and the condition of illegal loading is avoided; 3, in the loading process, flying dust generated in the loading process can be greatly reduced; 4, the loading times can be reasonably calculated according to the planned loading weight, the carriage height and the tie bar position, and uniform loading of the whole carriage is realized; and 5, automatic delivery and loading of cement clinker bulk are realized, the delivery efficiency is improved, the dust pollution is effectively reduced, and the operation safety in the delivery process is guaranteed.

The invention provides an in-vehicle interconnection and mutual switching system and a method thereof, relates to the technical field of vehicle intelligence technology, electric vehicle energy management and block chain, in particular to the in-vehicle interconnection and mutual switching system and the method thereof, and aims to utilize a vehicle-mounted battery of an electric vehicle as a distributed energy storage resource. Intelligent balancing of the power grid load is realized through a block chain power grid load monitoring module, a battery state and demand prediction module, a load balancing strategy processing module, a user interaction module, an intelligent scheduling module and the like. The system collects power grid load data in real time, predicts the power grid demand in combination with the battery state, formulates and executes a load balancing strategy, effectively relieves the load pressure in the peak period of the power grid, and improves the energy utilization efficiency. Meanwhile, a user can flexibly adjust a battery use strategy through an interactive interface, and intelligent scheduling and optimization are achieved.

A double-helix planetary roller helical pressing device includes a first turntable 10 and a second turntable 20. A conical roller 30 is provided between the first turntable 10 and the second turntable 20. The first turntable has a first conical helical track 11, and the second turntable has a second conical helical track 21. The conical roller has a roller annular groove 31 that meshes with the first conical helical track 11 and the second conical helical track 21. The first turntable 10 and the second turntable 20 rotate coaxially relative to each other, and the conical roller 30 rolls on the first conical helical track 11 and the second conical helical track 21. This invention uses a first turntable with a first conical helical track and a second turntable with a second conical helical track. The conical roller is provided with annular teeth, which allows the conical roller to accurately maintain its radial position, uniformly bear the pressing load, and also avoids slippage between the conical roller and the first and second turntables, improving the operating effect. A roller retainer structure with a roller carriage is used, which can better constrain the posture of the roller during movement.

The utility model relates to the technical field of material crushing, in particular to a tooth roller crusher. The tooth roller crusher comprises two tooth roller assemblies, each tooth roller assembly comprises a driving source, a speed reducer, a tooth roller and an energy storage wheel, the power output end of the driving source is connected to the tooth roller through the speed reducer, and the tooth roller is sleeved with the energy storage wheel. In the working process of the tooth roller crusher, the energy storage wheel synchronously rotates along with the tooth roller, the energy storage wheel can increase the rotational inertia of the tooth roller, the tooth roller has large angular kinetic energy, the instantaneous impact shear force of the tooth roller to materials is improved, the crusher can efficiently crush hard materials, and meanwhile the phenomenon that the crusher is blocked is relieved; in addition, the inertia of the energy storage wheel can make the load of the motor tend to be uniform, so that the rated power of the motor can be reduced.

The invention relates to the technical field of prefabricated T-beam transportation, in particular to efficient prefabricated T-beam transferring supporting and pulling stabilizing equipment which comprises a base, a supporting mechanism, a jacking mechanism and a monitoring mechanism. The base is divided into four carrier plates of an equal structure in a cross mode, and the adjacent carrier plates can move relatively. The supporting mechanism comprises a base, a supporting seat and a hydraulic oil cylinder; a fastener is arranged on the carrier plate; the jacking mechanism comprises a mounting seat, a fixed plate, a movable seat, a second hydraulic cylinder and a jacking plate; the jacking mechanism further comprises a pressing piece. The pressing piece comprises a supporting cross beam, a third hydraulic cylinder and a pressing pad. The monitoring mechanism is used for monitoring fulcrum pressure and lateral clamping force of the prefabricated T-beam in real time and transmitting real-time monitoring data to the monitoring platform. The height of each supporting point can be accurately adjusted, clamping of preset force in the vertical direction and the horizontal direction is completed at the same time, the pressure of the supporting points and the lateral clamping force can be monitored in real time, the alarm function is provided, and the transportation efficiency and safety are greatly improved.

The present application relates to natural gas desulfurization technical field, specifically said is a kind of petrochemical natural gas desulfurization treatment system;Including tower body and the bottom lateral communication of the tower body is provided with inlet pipe;The top of the tower body is communicated and is provided with outlet pipe;The lateral top, middle and bottom of the tower body are communicated and are provided with feed inlet, auxiliary port and discharge port respectively;The feed inlet, auxiliary port and discharge port are all covered with end cover compatible with the inner wall of tower body;The central vertical of the tower body is provided with rotating shaft;The lower end of the rotating shaft is fixedly connected with lower sleeve;The arc outer wall of the lower sleeve is rotatably and sealingly connected with lower mesh disc;The present application is matched with lower mesh disc by multistage gradient aperture middle mesh disc, realizes the size grading distribution of desulfurization particles from top to bottom, and the gap formed by uniform specification desulfurization particles prevents airflow deflection short circuit, and meanwhile, upper coarse particles can intercept lower fine particles, effectively improve desulfurization efficiency, avoid medicament loss and pipeline dust blockage.

The present invention provides a method, device and base station for load balancing between carriers of a narrowband Internet of Things. The method comprises: obtaining service status information of each terminal on a target carrier; and determining a target terminal capable of performing carrier adjustment on the target carrier according to the service status information. The method uses the service status information of the terminal on the target carrier to select a target terminal capable of performing carrier adjustment on the target carrier, so that it can be redirected to other carriers, thereby realizing load balancing based on cell resources.

The present invention relates to the technical field of lubrication of wind turbine gearboxes, and in particular to a lubricating oil for a yaw-pitch speed reducer of a wind turbine and a preparation method thereof. The lubricating oil comprises, by weight, 49-53 parts of metallocene polyalphaolefin, 23-28 parts of a functional fluid containing a low-viscosity and low-volatility polyalphaolefin base material, 15-20 parts of alkyl naphthalene, 2.5-3.0 parts of a composite additive package, 2-5 parts of an oiliness agent, 0.005-0.01 parts of a demulsifier, 0.02-0.03 parts of a defoamer, and 0.005-0.01 parts of a pour point depressant. The lubricating oil for a yaw-pitch speed reducer of a wind turbine according to the present invention has excellent high and low temperature performance, antioxidant performance, additive sensitivity, and foam stability; and the transmission energy efficiency is higher, and has an excellent energy-saving effect.

The application discloses a kind of concrete prefabricated component performance detection device, belong to concrete component test device field, including console, liquid supply mechanism, several detection mechanisms and oil jack, liquid supply mechanism and detection mechanism are respectively connected with console communication, several oil jacks are all set with a detection mechanism.The utility model replaces traditional mechanical jack with oil jack, and the stable delivery of oil can be realized by liquid supply mechanism and combined with the closed-loop control function of console, which not only ensures the uniform loading speed, meets the uniform speed loading required by specification, but also can ensure the stability of pressure in the holding phase;Through the cooperation of detection mechanism, liquid supply mechanism and console, accurate control of each oil jack can be realized, without repeated adjustment by staff, not only reduce the complexity of test and labor and time cost, but also ensure the uniformity of load distribution, guarantee the reliability and accuracy of test data.

The utility model belongs to the technical field of cutter disassembly and assembly, and particularly relates to a cutter locking structure which comprises a cutter and a cutter handle, and a cam tensioning mechanism is arranged between the cutter and the cutter handle. The cam tensioning mechanism comprises a lock shaft and an eccentric wheel installed on the lock shaft, an axial tensioning piece is arranged between the cutter and the cutter handle, the axial tensioning piece is movably assembled in the cutter handle, one end of the axial tensioning piece is in threaded connection with the cutter, and a tensioning hole is formed in the axial tensioning piece; or a tensioning hole is formed in the short taper shank of the cutter; the axis of the tensioning hole coincides with the central axis of the cutter handle and is perpendicular to the axis of the lock shaft. The lock shaft can rotate relative to the cutter handle, penetrates into the cutter handle and is connected with the tensioning hole in an inserted mode so that the eccentric wheel can be located in the tensioning hole, the eccentric outer side of the eccentric wheel makes contact with the hole wall of the tensioning hole, and the eccentric wheel drives the cutter to move in the axial direction of the eccentric wheel under rotation of the lock shaft so as to tension the cutter. And a locking structure is arranged between the lock shaft and the knife handle. The tool can be prevented from loosening and rotating relative to the tool handle, machining precision is guaranteed, machining efficiency is improved, and machining cost is saved.

The invention discloses coal loading and unloading equipment, and relates to the technical field of coal loading and unloading, the coal loading and unloading equipment comprises a frame body, a supporting frame is arranged between the outer side walls of the frame body, moving grooves are formed in the two side walls of the supporting frame, and a discharging mechanism for uniformly loading and unloading coal is arranged between the moving grooves; the discharging mechanism comprises a coal storage barrel moving up and down along a moving groove, a dust falling mechanism capable of reducing coal dust is arranged at the bottom of the coal storage barrel, movable grooves are formed in the two opposite side walls of the frame body, and a flattening mechanism capable of flattening coal is movably arranged in the movable grooves; the side wall of the frame body is provided with a driving mechanism used for driving the coal storage barrel and the paving mechanism to move synchronously, and through cooperative work of the coal storage barrel, the discharging mechanism, the dust falling mechanism, the paving mechanism, the driving mechanism, the frame body and the supporting structure, uniform loading of coal is achieved, coal dust pollution is reduced, and the loading efficiency and quality are improved; and the stability and the safety of the equipment are ensured.