Blade collecting device of alternating current variable pitch control system

The invention discloses a blade collecting device of an alternating current variable pitch control system. The blade collecting device comprises a main power source, a load switch, a driver, a three-phase alternating current motor, a switching power source DC/DC, a backup capacitor box, a three-phase switching power source AC/DC and a single-phase brake. The main power source, the load switch, the driver and the three-phase alternating current motor are sequentially connected, the switching power source DC/DC is connected with the driver and the single-phase brake respectively, a first fuse is arranged between the switching power source DC/DC and the driver, a second fuse is arranged between the switching power source DC/DC and the single-phase brake, the backup capacitor box is connected between the switching power source DC/DC and the driver through diodes, the input ends of the three-phase switching power source AC/DC are connected with the main power source through a relay, and the ...

Stand-by battery pack on-line monitoring device of large-size wind generator set variable-pitch controller

The invention relates to a wind power generating set, particularly a stand-by battery on-line monitoring device of a large-size wind generator set variable-pitch controller. Each battery pack is correspondingly connected with a battery manager; each battery manager is connected with a PLC (programmable logic controller) through a CAN (Controller Area Network) bus; the PLC is connected with a main control system through a fiber; and a wind farm control center and a user monitoring interface LCD (liquid crystal display) are connected to the main control system. The invention can perform on-line intelligent charging/discharging management and parameter/state communication on the battery packs, and ensure the battery packs to be in a good state within the service life; and meanwhile, the main control system can master the capacity and good or bad state of each battery pack and each battery in time, thereby performing prewarning or replacing the batteries in time, and further ensuring the safety ...

Transmission device of vertical ball screw pair

The invention discloses a transmission device of a vertical ball screw pair. The transmission device mainly comprises a ball screw pair screw shaft, a ball nut, a flange, guide rails, guide rods, a double-face spur rack, a first spur gear, a second spur gear and a servo motor with an electromagnetic brake. The lower end of the ball screw pair screw shaft is in transmission connection with the servo motor through a coupler, and the upper end of the ball screw pair screw shaft is connected with the ball nut. The flange is fixedly connected with the ball nut, and two sides of the flange are limited in two guide rails parallel to the ball screw pair screw shaft. One ends of the plurality of guide rods are fixed on the flange, and the other ends of the guide rods are connected with the base. The lower end of the double-face spur rack is fixed on the base, and the first spur gear and the second spur gear are arranged on two sides of the double-face spur rack and are simultaneously meshed with ...

Data transmission method based on multiple channels, related nodes and system

An embodiment of the invention discloses a data transmission method based on multiple channels, related nodes and a system. The data transmission method based on multiple channels includes: leading receiving nodes to synchronously receive data frames from transmitting nodes from at least two channels; comparing whether data of at least two received data frames are identical; performing cyclic redundancy check (CRC) verification on the data frames identical in data if the data frames identical in data exist; performing CRC verification on all the data frames presently performed with the comparison if the data frames identical in data do not exist; transmitting a data frame verified to be correct by the CRC to a first input first output (FIFO) if the data frames verified to be correct exist; and sending confirmation information indicating the data frames to be correctly received to the transmitting nodes. The technical scheme of the data transmission method, the related nodes and the system ...

Landing leg and engineering machinery

The invention discloses a landing leg and engineering machinery. The landing leg comprises a supporting leg, a pedestal and a clump weight, wherein the pedestal is connected to the bottom end of the supporting leg; the clump weight is detachably arranged on the pedestal. The clump weight can be a combined structure, and the lower surface of the clump weight is provided with a counter bore for accommodating the lower part of the pedestal. By means of the pressing effect of the gravity of the clump weight, the separation of the supporting leg from the ground can be limited; the landing leg has the advantages of good operation stability, small ground pressure, high universality, accuracy in positioning, quickness in mounting and the like.

Base plate for radiant heating for low-temperature floor

The invention discloses a base plate for radiant heating for a low-temperature floor. The base plate for radiant heating for the low-temperature floor comprises a plate body made from a heat-isolating material, a floor heating tube fixing device integrally formed on the upper part of the plate body, and a reflecting film integrally formed at the bottom of the plate body. The plate body, the floor heating tube fixing device and the reflecting film of the base plate for radiant heating for the low-temperature floor adopt an integrally-formed structure which is good in strength, and can be paved in one step during a pavement process, and the pavement process is simple and convenient, so that the working efficiency of pavement can be greatly increased; simultaneously, the integrally-arranged floor heating tube fixing device cannot fall off, so that the installation of a floor heating tube is firm and reliable, and the problems of non-uniform heat dissipation caused by the displacement of the ...

Engineering machine and luffing mechanism therefor

The invention discloses an engineering machine and a luffing mechanism therefor. The luffing mechanism comprises a luffing cylinder and a telescoping mechanism. The luffing cylinder is hinged between a first knuckle arm and a mounting part. The telescoping mechanism is abutted between the first knuckle arm and the mounting part and separates from the first knuckle arm or the mounting part when the first knuckle arm expands to a preset angle. When the rotation angle of a boom is small, stress borne by the luffing cylinder can be shared by the luffing cylinder; when the rotation angle reaches a certain value, the luffing cylinder bears the stress independently; the design and production of the luffing cylinder can be less demanding, diameter of the luffing cylinder decreases, weight is reduced, the cost is reduced, and rated design pressure of the luffing mechanism is fully utilized.

Charging method and charging management system of lead-acid battery pack for wind turbine generator system

The invention discloses a charging method and a charging management system of a lead-acid battery pack for a wind turbine generator system, wherein the charging method is as follows: detecting whether the voltage of a single battery is less than 60% or not, if yes, prompting fault, otherwise detecting whether the voltage is less than 90% or not again, if yes, charging, otherwise jumping to a next single battery to continue detecting; detecting whether the voltage of the single battery is less than 100% or not, if yes, charging until reaching to 100%, then switching to constant-voltage charging, otherwise directly switching to a constant-voltage charging mode; judging whether the single battery charging process of the battery is finished or not, if yes, switching to judge the next single battery, otherwise, continuing constant-voltage charging; after the boost charge stage of each single battery in a battery pack finished, starting voltage detection and corresponding supplementary procedures ...

Closed-loop control device taking superheated steam as grinding cooling liquids and method thereof

The invention discloses a closed-loop control device taking superheated steam as grinding cooling liquids and a method thereof. The device comprises a computer control module, a steam generator, a secondary heating module, a simulation grinding area module, a gas proportional electromagnetic valve, a secondary heating controller and a signal amplification board, wherein the gas proportional electromagnetic valve, the secondary heating controller and the signal amplification board are connected with the computer control module respectively, steam generated by the steam generator sequentially passes through the gas proportional electromagnetic valve and the secondary heating module to be fed in a nozzle, and the simulation grinding area module is connected with the signal amplification board through a thermocouple. Cooling effect experiments under different expected set temperatures can be finished by means of closed-loop control, so that technological parameter optimization values and self-adaptation ...

Cantilever crane and material distributing equipment

The invention discloses a cantilever crane and material distributing equipment, and belongs to the technical field of engineering machinery. The cantilever crane comprises a front cantilever section, a back cantilever section and a locking mechanism. The tail end of the front cantilever section is hinged to the head end of the back cantilever section. A driving mechanism capable of driving the front cantilever section and the back cantilever section to oppositely rotate around a hinge point is arranged between the front cantilever section and the back cantilever section. The locking mechanism can fix the front cantilever section and the back cantilever section oppositely when the first cantilever section and the back cantilever section oppositely rotates around the hinge point to a preset angle. The driving mechanism does not bear load or bears small load when the cantilever crane works, plays a part in supporting only during unfolding and folding of the cantilever crane and bears small ...

METHOD FOR SWITCHING A NODE CONTROLLER LINK, PROCESSOR SYSTEM, AND NODE

Embodiments of the present invention disclose a method for switching an NC link, a processor system, and a node, where the processor system includes more than two nodes capable of communicating with each other, each node includes a node controller NC chip, a host bus adapter HBA apparatus, and at least one CPU, the NC chip is connected to each CPU in a node where the NC chip is located, and the HBA apparatus is connected to each CPU in a node where the HBA apparatus is located; an NC link borne by the NC chip is corresponding to an HBA link borne by the HBA apparatus. By using an HBA apparatus to deploy a redundant link, the cost of deploying the redundant link is reduced effectively under a premise of ensuring the reliability of the processor system. 1. A method for switching a node controller link in a processor system having more than two nodes , the method comprising:the more than two nodes in the processing system communicating with each other via a corresponding pair of node controller (NC) link and a host bus adapter (HBA) link in each node, wherein each node comprises a single node controller (NC) chip, a single host bus adapter (HBA) apparatus, and one or more CPU, wherein the single NC chip and the single HBA apparatus are both connected to each of the one or more CPU in a node where the single NC chip and the single HBA apparatus are both located, wherein the NC link is borne by the single NC chip and the corresponding HBA link is borne by the single HBA apparatus in the node ;detecting for failure occurrence in the single NC chip of the node; andin case if a failure occurrence has been detected in the single NC chip, switching a service on the NC link to the corresponding HBA link.2. The method according to claim 1 , wherein the communicating by the corresponding pair of NC link and the HBA link in each node comprising: presetting a first routing table and a second routing table in each node claim 1 , wherein the first routing table is a routing table of ...

Boom apparatus and concrete pump vehicle having same

In one aspect of the invention, a boom apparatus used for a concrete pump vehicle includes multiple booms, where the multiple booms comprise a first boom hinge-connected to a turntable of the concrete pump vehicle and a second boom hinge-connected to the first boom. When the boom apparatus is in a folded state, the first boom extends towards a cab of the concrete pump vehicle, and the second boom is further placed above the first boom. The invention also provides a concrete pump vehicle having the boom apparatus.

Adjustable carton stapler

本实用新型涉及一种可调节钉箱机，包括钉箱机本体和活动支撑架，所述的活动支撑架设置于钉箱机本体上，所述的活动支撑架包括固定杆和活动杆，所述的固定杆和活动杆分别为方形结构的支杆，所述的固定杆一端固定设置于钉箱机本体上，该固定杆垂直设置于钉箱机本体上的装钉板上，所述的活动杆以可活动方式设置于固定杆上，该活动杆一端开设有供固定杆穿过的方形通孔，所述活动杆通过方形通孔设置于固定杆上，该活动杆可沿着固定杆移动并定位于固定杆上的任一位置，所述活动杆与钉箱机本体上的装钉板平行，且活动杆与钉箱机本体上的装钉板的上端面分别位于同一平面。本实用新型解决了现有技术中需要人为去扶持箱子的问题，大大提高了工作效率。

Memory Setting Method and Apparatus

A memory setting method and apparatus the method including obtaining, by a processor that is in a non-uniform memory access architecture (NUMA) system and that has at least two memories, performance of the at least two memories upon the processor starting, and setting, based on the performance of the at least two memories, at least one of the at least two memories as a local memory, and setting, based on the performance, at least one of the at least two memories as a remote memory, where performance of the local memory is better than performance of the remote memory.

Memory setting method and apparatus

A memory setting method and apparatus are provided, so as to allocate a local memory to a node when memories with different performance are intermixed. A processor sets a local memory and a remote memory based on performance of memories of the processor, and sets a memory with better performance as the local memory, so that the processor can preferably gain access to the memory with better performance. This improves efficiency of reading/writing data from/to the local memory by the processor, and improves performance of an entire system.

Memory setting method and apparatus

Composite decellularized matrix membrane and use thereof

The present disclosure provides a composite decellularized matrix membrane and use thereof. The composite decellularized matrix membrane prepared by the present disclosure is prepared by wrapping one layer of a polymer membrane with two layers of decellularized matrix membranes. The decellularized matrix membrane is prepared from at least a biomaterial of a porcine small intestine, a porcine bladder, and porcine skin. The polymer membrane is prepared from at least a polymer material of polycaprolactone, polydimethylsiloxane, polyurethane, polylactic acid-glycolic acid, polyvinyl alcohol, and polyhydroxy fatty acid ester. The composite decellularized matrix membrane prepared by the present disclosure can prevent calculi, makes a patient suffer less, recover faster, live better, and cost less, while medical resources are saved, and hope for treatment is also brought for some patients with a contraindication to an in-situ ileal neobladder surgery.

Method for switching a node controller link, processor system, and node

Embodiments of the present invention disclose a method for switching an NC link, a processor system, and a node, where the processor system includes more than two nodes capable of communicating with each other, each node includes a node controller NC chip, a host bus adapter HBA apparatus, and at least one CPU, the NC chip is connected to each CPU in a node where the NC chip is located, and the HBA apparatus is connected to each CPU in a node where the HBA apparatus is located; an NC link borne by the NC chip is corresponding to an HBA link borne by the HBA apparatus. By using an HBA apparatus to deploy a redundant link, the cost of deploying the redundant link is reduced effectively under a premise of ensuring the reliability of the processor system.

Similarity calculation apparatus and method, and storage device

This application relates to similarity calculation apparatuses and methods, and storage devices. An example similarity calculation apparatus includes an input signal processing circuit, a data calculator, and at least one output processing circuit, where the data calculator includes a storage array configured to store to-be-calculated data. The input signal processing circuit is configured to: generate an operating voltage based on similarity calculation instructions, and convert an address of the to-be-calculated data in the similarity calculation instructions into a target address The data calculator is configured to: select, based on the target address, the to-be-calculated data stored in the storage array, and apply the operating voltage to the to-be-calculated data to perform similarity calculation. The at least one output processing circuit is configured to: process a signal output by the data calculator, and output a calculation result.

Similarity calculation apparatus and method, and memory device

Embodiments of this application disclose a similarity calculation apparatus and method, and a storage device, and relate to the computer field. A specific solution is as follows: The similarity calculation apparatus includes an input signal processing module, a data calculation module, and at least one output processing circuit that are sequentially coupled, where the data calculation module includes a storage array configured to store to-be-calculated data; the input signal processing module is configured to: generate an operating voltage based on similarity calculation instructions, and convert an address of the to-be-calculated data in the similarity calculation instructions into a target address; the data calculation module is configured to: select, based on the target address, the to-be-calculated data stored in the storage array, and apply the operating voltage to the to-be-calculated data to perform similarity calculation; and the at least one output processing circuit is configured to: process a signal output by the data calculation module, and output a calculation result.