111results about How to "Improve digging effect" patented technology

The invention discloses a method for evaluating risks of a high rock slope. The method for evaluating the risks of the high rock slope comprises the following steps: (1) constructing a risk evaluation index system, (2) defining classification levels, (3) carrying out dimensionless processing on indexes, (4) determining comprehensive weight of evaluation indexes, and (5) evaluating risk states of the slope. By means of the method for evaluating the risks of the high rock slope, factors which influence stability of the slope are comprehensively analyzed and identified, a subjective weighting method and an objective weighting method are combined, and the attribute recognition theory and the maximum attribute measure principle are adopted to indentify the risk states of the slope. Compared with other methods in the prior art, the method for evaluating the risks of the high rock slope overcomes the defects that a safety factor method can not express the change degree of the risks of the slope and reflect uncertainty and randomness of the risks of the slope, subjective preference and objective laws are comprehensively measured, evaluation and judgment are more reasonable, and high engineering significance and practical values are possessed.

The invention discloses a method and a system for modeling a web in weblog excavation to fulfill the aim of improving website service quality. The method comprises the following steps of: pre-processing a weblog so as to acquire a credible weblog; selecting a characteristic webpage and sectioning a website according to access interests of users and the credible weblog, and building a user browsing access mode array based on a weighted random index method; performing optimal clustering on the user access mode array by using a clustering algorithm based on chaotic ant swarm optimization, marking categories of users according to predetermined category labels, and building user public files; and extracting the web with a pre-fetching probability exceeding a predetermined pre-fetching probability threshold value and storing the web in a buffer memory of a server according to the user public files and the predetermined pre-fetching probability threshold value. Compared with conventional per-fetching technology, the method has the advantage that the accuracy rate is greatly improved.

The invention discloses a method of item-all-weighted positive or negative association model mining between text terms and a mining system applied to the method. The method comprises the following steps of preprocessing by using a Chinese text preprocessing module to establish a text database and a feature word item library; mining item-all-weighted feature word candidate item sets from the text database by utilizing a feature word frequent item set and negative item set mining implementation module, calculating a weight dimension ratio, and cutting out uninteresting item sets by adopting a multi-interestingness threshold value pruning strategy to obtain an interesting item-all-weighted feature work frequent item set and negative item set model; mining an effective item-all-weighted positive or negative association rule model from frequent item sets and negative item sets by utilizing an item-all-weighted positive or negative association rule mining implementation module between terms, and outputting the mined positive or negative association rule model to a user by utilizing an item-all-weighted association model result display module between terms. By applying the method and the system, unnecessary frequent item sets, negative item sets and association rule models can be greatly reduced, Chinese feature word association rule mining efficiency is improved and a high-quality association model between Chinese terms is obtained.

The invention discloses a power positioning jet-flow spraying type ditcher, which comprises sliding pries arranged at the left end and the right end of a framework, wherein the sliding pries are floating barrel type sliding pries of which the cross sections are in duck egg shapes; two high-pressure submersible pumps which are symmetric with each other in the transverse direction are arranged on the top of the framework; two high-pressure water-jet guide frames which are symmetric with each other in the transverse direction and connected with the high-pressure submersible pumps on the same side are connected to the front lower side of the frame; the lower front parts of the high-pressure water-jet guide frames are provided with a plurality of high-pressure water nozzles and a plurality of rotary nylon rollers; two sludge suction and drainage pumps which are symmetric with each other in the transverse direction are arranged above the framework; two sludge suction and drainage guide frames which are symmetric with each other in the transverse direction are arranged on the rear lower side of the framework; the lower parts of the sludge suction and drainage guide frames are provided with a plurality of rotary nylon rollers and a plurality of sludge suction and drainage channels which are connected with the sludge suction and drainage pumps on the same side; and both the sludge suction and drainage pumps are connected with a sludge drainage pipe respectively. The ditcher can dive into the water by 250 meters and is high in power, efficiency and reliability, so submarine construction for ditching deep trenches less than or more than 2 meters can be realized safely; and the ditcher has functions of sucking and draining sludge.

The invention relates to a vibratory digging harvester for winter potato, comprising a frame, a gearbox, a vibratory digging device, a two-stage conveyer and a separation mechanism, with the gearbox,the vibratory digging device, the two-stage conveyer and the separation mechanism mounted on the frame. The gearbox powers the vibratory digging device, the two-stage conveyer and the separation mechanism. The vibratory digging device comprises a vibratory digging blade to dig crops. The two-stage conveyer comprises a conveying chain screen to convey and primarily screen silt. The separation mechanism comprises a vibratory flow-combing slide mesh to screen silt, the front end of the conveying chain screen is positioned at the rear of the digging blade, and the rear end of the conveying chain screen is positioned above the front end of the vibratory flow-combing slide mesh. The vibratory digging harvester for winter potato is simple in structure and convenient to operate, has adjustable positions and adjustable vibrational amplitude, digging depth and penetrating angle, may arrive at optimal digging as practice requires so as to achieve reduced digging drag, increased potato exposure rate and reduced damage rate, has a promising market in the harvest of potato and other tubers, and is a harvesting machine for potato and other tuberous crops.

The invention discloses a completely-weighted mode mining method for discovering association rules among texts. Completely-weighted data to be processed are pre-processed, and a completely-weighted database and an item .library are established; a completely-weighted frequent item set and a negative item set are mined, and an interesting completely-weighted frequent item set and an interesting negative item set are obtained through pruning; the effective completely-weighted positive and negative association rules are mined through a support degree-CPIR model-correlation-interestingness evaluation framework. The completely-weighted mode mining method can overcome the defects of the existing weighing mining technology. Item weights are objectively distributed in the database and integrated with the completely-weighted mode mining method along with the completely-weighted data characteristics of the business record change, and a more actual and reasonable completely-weighted positive and negative association mode can be obtained. An invalid and uninteresting association mode is avoided. The number of mined candidate items, the number of frequent item sets, the number of negative item sets and the number of positive and negative association rule modes are smaller than the number of mined candidate items, the number of frequent item sets, the number of negative item sets and the number of positive and negative association rule modes in the prior art. The mining efficiency is greatly improved, and the completely-weighted mode mining method has good extendibility.

The invention discloses a joint reinforcement structure for a shield tunnel end and a construction method. The joint reinforcement structure is a rectangular box structure as a whole, and the rectangular box structure is formed by reinforcement structures surrounded on four sides. The reinforcement structure near a foundation pit is a frozen soil wall, and the reinforcement structures on the remaining three sides are cement soil continuous walls. The method includes a first step of construction of cement soil continuous walls by using a TRD method to construct continuous walls of cement soil with a three-cycle method; a second step of construction of vertical frozen soil wall by firstly, drilling of freezing holes, installing a freezing station at the same time; after confirming that the freezing meets the door chiseling condition, starting to break a hole wall, forcibly unfreezing before a shield main machine enters into the hole, pulling out a vertical freezing tube after the shieldmain machine completes entering and exiting the hole, and grouting. The joint reinforcement structure has the beneficial effects that strong construction practicability, convenient construction quality control and outstanding reinforcement effect. Compared with a traditional cement-soil mixing piles reinforcing method, the method saves cost and greater promotion and application value is ensured.

The invention provides a device for digging out mature coconut pulp, and relates to the field of nut processing. The device provided by the invention comprises a fixed pedestal, and the top of the fixed pedestal is provided with a transmission mechanism. The transmission mechanism is connected with a coconut shell fixing device, and a part, located at the top of the fixed pedestal and behind the transmission mechanism, is fixedly connected with a telescoping mechanism. The telescoping mechanism is connected with a transmission device, and the transmission device is connected with a pulp separating device. The device provided by the invention can drive the pulp separating device to move through the telescoping operation of a hydraulic telescoping rod. The movement of the pulp separating device can enable a semicircular scraper to make contact with the pulp on the inner wall of a coconut shell. The contact of the semicircular scraper with the pulp on the inner wall of the coconut shell can drive the coconut shell to rotate during the rotation of the coconut shell fixing device, thereby facilitating the contact digging of the pulp on the inner wall of the coconut shell.

The invention discloses a safe stopping device of a building construction material elevator. The safe stopping device comprises a fixed seat. The bottom of the fixed seat is fixedly connected with supporting legs. The center of the lower surface of the fixed seat is fixedly connected with a fixed pile. Extending-retracting rods and fixed rods are movably installed on the top of the fixed seat. The top ends of the extending-retracting rods and the fixed rods are movably connected with the bottom of a clamping plate. In the safe stopping device, the ground is perforated and excavated through the fixed pile, and fixing is achieved through the supporting legs; the extending-retracting rods are matched with the fixed rods to extend and stretch, so that the inclining angle of the clamping plate is adjusted, the inclining angle of the clamping plate is matched with the angle of the elevator, and accordingly the clamping plate and the elevator are connected more closely; and the overall stability of the elevator is improved, the height and the angle are convenient to adjust, and the safe stopping device is applicable to the elevators of different sizes and applicable to the elevators in various states in use and is high in applicability.

The invention discloses a data mining-based elevator accident pre-warning and forecasting system. The system comprises a data import module, a data mining module and a data export module, which are operated on a Hadoop platform, wherein the data import module is used for importing original data in an elevator remote supervision system database SQLServer to serve as a data source of data mining, and storing the data source; the data mining module is used for carrying out data mining on the stored data source; and the data export module is used for exporting a result obtained by the data mining into the elevator remote supervision system database SQLServer for subsequent analysis. The data mining-based elevator accident pre-warning and forecasting system is capable of carrying out clustering analysis and association rule mining on elevator data, so that the sufficiency of data mining is ensured, the efficiency of data mining is improved, and powerful data support is provided for the pre-warning and forecasting of elevator accidents; and the system is suitable for elevator monitoring and elevator rescue.

The invention relates to a software function change prediction system and method based on graph mining and belongs to the field of software engineering. The system and method of the invention carry out calculation based on software network function call relational graphs; first, the whole function call relational graph is required to obtain; by comparing the functions of the adjacent versions, modified, deleted, added functions are get and a changed function subgraph is obtained; by means of the graph mining algorithm span, parameters are selected which are mainly span and support degree to obtain corresponding frequent subgraphs, wherein the functions contained in the subgraphs are predicted functions that can be changed.

The invention relates to an environmental protection and ecological rehabilitation equipment capable of digging and filling an ecological concrete slope. The environmental protection and ecological rehabilitation equipment capable of digging and filling the ecological concrete slope comprises a supporting device, a digging device and a filling device. The supporting device comprises a supporting bottom plate and a universal wheel. Universal wheels are symmetrically mounted on the bottom of the supporting bottom plate. The right end of the supporting bottom plate is provided with the digging device. The filling device is arranged on the top of the left end of the supporting bottom plate. The problems of the existing ecological concrete construction, such as manual drilling towards slope surface sag, the poor drilling effect, the manual flushing towards the drilled sag, impossible support towards grouting in the sunken place, and the serious leakage of the grouting in the sunken place, are solved.

The invention provides a medicinal herb harvester, and belongs to the field of agricultural machinery. The medicinal herb harvester comprises a frame, wherein a deeply digging mechanism, a transport mechanism, a vibrating screen and a harvesting trough are sequentially arranged on the frame from front to back; the deeply digging mechanism comprises a power gear, a driven gear and a driven wheel; the power gear is meshed with the driven gear; a connecting bracket driven by the driven gear to perform circumferential movement is connected between the driven gear and the driven wheel. When the medicinal herb harvester works, the deeply digging mechanism can be inserted into deep soil to dig out a medicinal herb with relatively thin and long rhizomes, the medicinal herb is transported to the vibrating screen through the transport mechanism, the vibrating screen separates soil, and the relatively clean medicinal herb is transported to the harvesting trough and stored, so that the medicinal herb harvester has the characteristics of overall functions and high working efficiency.

The invention relates to a riverway deep-excavation device, in particular to a noiseless riverway deep-excavation device of a dredger. According to the technical aims, the noiseless riverway deep-excavation device of the dredger is good in excavation effect, high in work speed and low in hoe consumption. To achieve the above technical aims, the noiseless riverway deep-excavation device of the dredger comprises a hoe, a first connecting rod, a first supporting rod, a second connecting rod, a support, a sliding block, a third connecting rod, a sliding rail, a connecting seat, a right belt wheel, a second supporting rod, a linkage rod, a drilling rod, a left belt wheel, a flat belt, a motor, a fixed rod and a muffler plate. The support is arranged at the bottom of the dredger. The second supporting rod is arranged in the middle of the top in the support. The left belt wheel is arranged on the front side of the second supporting rod and connected with the linkage rod. The noiseless riverway deep-excavation device achieves the effects of being good in excavation effect, high in work speed and low in hoe consumption, and noise can be reduced while the depth of a riverway is effectively increased.

The invention discloses portable household tree planting equipment. The equipment includes a first strip-type bottomless housing, the upper surface in the first strip-type bottomless housing is provided with a tree planting and digging mechanism, the side surface of the first strip-type bottomless housing is provided with a soil retaining mechanism, and the upper surface of the first strip-type bottomless housing is provided with a carrying mechanism. The equipment has the advantages of being convenient to carry and simple to operate, reducing the labor intensity, improving the work efficiency, and being good in digging effect and convenient in surrounding soil material collection and restriction.

The invention relates to a tree planting device, in particular to a device for efficiently planting trees beside a highway. The device for efficiently planting trees beside a highway aims at achieving the technical purposes of being small in workload, high in tree planting speed and obvious in hole digging effect. To achieve the technical purposes, the device for efficiently planting trees beside a highway comprises a push plate, a steel tube, an air cylinder I, an air cylinder II, a fixing rod, a clamping device, a connecting rod, an electric push rod I, a motor I, supporting rods, a carrying frame, sliding blocks I, a rack, sliding blocks II, a gear, a motor II, a sliding rail I, wheels, a bottom plate, a left frame, a connecting rod and a sliding rail II. The wheels are symmetrically arranged on the left side and the right side of the bottom of the bottom plate, the supporting rods are symmetrically arranged in the center of the top of the bottom plate, the sliding rail I is arranged at the top ends of the supporting rods, the sliding blocks I are connected to the top of the sliding rail I in a sliding mode, and the carrying frame is arranged at the top ends of the sliding blocks I. The device for efficiently planting trees beside a highway has the advantages of being small in workload, high in tree planting speed and obvious in hole digging effect.

The invention discloses a handheld pit digging machine for forestry planting and relates to the technical field of pit digging machines. The handheld pit digging machine comprises a machine body and aframe body, wherein the frame body comprises a base; one group of lifting shells are fixedly arranged on one surface of the base; a lifting mechanism is fixedly arranged in the lifting shells; the lifting mechanism is in transmission connection with a lifting block; a bracket is fixedly arranged on one surface of the lifting block; the bracket is located at the outer parts of the lifting shells;a handholding device is fixedly arranged at one opposite side of the machine body; the handholding device comprises one group of L-shaped rods; a transverse rod is in rotary connection between the twoL-shaped rods through a bearing; the transverse rod is provided with seven through holes. According to the handheld pit digging machine disclosed by the invention, the machine body can be supported through a connection frame; the L-shaped rods can be fixed on a supporting plate through a fixing device and a fixing sleeve and the problem that an existing pit digging machine is inconveniently mounted on the frame body is solved; the machine body can be driven to move up and down through the lifting shells and the lifting mechanism; the problem that the stability of the frame body on the existing pit digging machine is not enough so that the pit digging effect is not good is solved.

The invention relates to an excavator component, and particularly discloses a bucket. The bucket comprises a bucket body with an opening in the rear end, a guide groove is formed in the upper wall ofthe bucket body, the rear lower end of the bucket body is hinged to a bottom cover, a guide block matched with the guide groove is arranged at the upper end of the bottom cover, the bottom cover rotates forwards, the bucket capacity is reduced, and otherwise, the bucket capacity is increased; and a traction base is arranged at the outer end of the guide block and hinged to a traction arm, and a threaded sleeve is arranged at the other end of the traction arm. A swing seat and a motor device are arranged above the bucket body, a main shaft driven by a motor device is arranged on the swing seat,and the main shaft is matched with the threaded sleeve so that the position of the bottom cover can be adjusted through rotation to achieve bucket capacity adjustment. The bucket has a bucket capacity adjusting function and can be adjusted according to actual working conditions, and the operation efficiency can be improved to the maximum extent on the premise that stable work of an excavator is guaranteed; the bucket capacity is convenient and fast to adjust, and time and labor are saved; and a spare bucket is not required to be arranged, so that the equipment acquisition cost is reduced, andthe defects of labor consumption, operation efficiency reduction and the like of the spare bucket in transportation, disassembly and assembly are overcome.

The present invention relates to a backacting shovel hydraulic excavator performance integration characterization method. On the basis of fully considering the nondeterminacy of the excavation resistance system, the usual effect interval of the excavation resistance coefficients and the resistance moment coefficients is obtained, a linear inequality formed by the interval and the complete machine restrictive condition is solved, the work voltages of three groups of hydraulic cylinders are inputted into a hexahedron space to map force output convex polyhedron space of the tail end of a shovel, and based on the polyhedron, a set of integration performance evaluation indexes configured to evaluate the excavator excavation performances and the proportion of each restricted condition is provided to measure the reasonability of the design of the excavator operating mechanism and matching relation of the operating mechanism and the hydraulic cylinder applied force. The backacting shovel hydraulic excavator performance integration characterization method is suitable for the quantitative analysis and the visualization representation of the excavator excavation performance of the excavation resistance system variable characteristics, provides a theoretical basis for the complete machine performance analysis of the backacting shovel hydraulic excavator, the reasonability evaluation of the design of the operating mechanism and the optimization design and improves the performances of the produced excavators.

The invention discloses a soil hole groove excavating device for garden tree transplanting, and relates to the technical field of garden planting. The soil hole groove excavating device comprises a moving frame, a soil lifting mechanism driven by a double-shaft motor to rotate is arranged at the bottom of a lifting frame, and the side wall of the soil lifting mechanism is provided with a stirringbarrel fixed to the lifting frame in a communicating manner through a corrugated pipe; and a motor I is fixed at the top of the stirring barrel, and an intermittent discharging mechanism is arranged at the bottom of the stirring barrel. According to the soil hole groove excavating device, the vertical height of the lifting frame can be adjusted in a lifting manner through the arranged lifting mechanism, so that the soil lifting mechanism at the bottom of the lifting frame can be adjusted according to the digging depth; two arranged semicircular pipes can form a complete circular pipe in the digging process and get away from each other outwards after digging is finished, so that soil around a dug pit hole is compacted, and collapse of the soil around the pit hole is avoided; and an arrangedmixing mechanism can crush and mix the soil and chemical fertilizer, the soil is fluffy and fertilized and then discharged beside the pit hole, and backfilling of the soil is facilitated.

The invention relates to the technical field of peanut harvesting mechanical equipment, in particular to a low-dust ensiling peanut combine harvester. The low-dust ensiling peanut combine harvester comprises a chassis; an engine is mounted at the rear end of the chassis; a cab is fixed to the upper portion of the front end of the chassis; a seedling cutting ensiling device is arranged at the foremost end of the chassis; an excavating and conveying device is arranged at the lower middle part of the chassis; a fruit picking and cleaning device is arranged at the upper middle part of the chassis;the fruit picking and cleaning device is provided with a fruit collecting box; and a first conveying channel and a second conveying channel are vertically fixed to the inner back end and the inner front end of the chassis. The harvester is reasonable in design and simple to operate; under the mutual cooperation of a fan and an ensiling box, flying dust can be greatly reduced and the situation that the atmospheric environment is damaged by the flying dust is avoided; a series of functions of seedling cutting and collecting, digging and soil loosening, conveying and soil removing, fruit picking, tail removing, cleaning and the like of peanuts can be achieved; and a fruit picking roller can perform fruit picking on different peanut varieties by replacing fruit picking teeth, so that the application range is wide.

The invention relates to an integrated hydraulic bucket for pavement breaking and digging. The integrated hydraulic bucket for pavement breaking and digging comprises a converting fixed device, a hydraulic bucket device, a first hydraulic cylinder and a hydraulic breaking device. The bottom end of the hydraulic bucket device is connected with the converting fixed device through a pin roll. The top end of the first hydraulic cylinder is connected with the hydraulic bucket device through a pin roll. The bottom end of the first hydraulic cylinder is connected with the converting fixed device through a pin roll. The hydraulic breaking device and the converting fixed device are connected in an interference fit mode through a pin roll. The converting fixed device is utilized to achieve the conversion between the hydraulic breaking device and the hydraulic bucket device. The automation degree is high, and manual conversion is not needed. The integrated hydraulic bucket for pavement breaking and digging solves the problem that a hydraulic breaker and a bucket of existing digging bucket equipment need to be changed constantly in the process of constructing a road, the function of breaking and digging can on a waste pavement can be conducted on a waste pavement continuously, and the advantages of being simple and convenient in operation, high in automation degree, small in labor intensity and high in working efficiency are possessed.