37results about How to "Reduce installation links" patented technology

The invention discloses a window motor abnormal noise detection method and apparatus based on an MFCC and an SVM. Sound signals during no-load running of a motor are acquired and pre-processed. In the pre-processing stage, a second order Hanning self-convolution window is used as a window function for interception of the sound signals. After pre-processing, data extraction of MFCC parameters is conducted and an SVM is entered for abnormal noise determination. An MFCC feature value and a determination result Label are stored in a historical database. To improve the SVM discriminant accuracy, the invention adopts an artificial bee colony algorithm for SVM parameter automatic adjustment and updating; and the method has the characteristics of high reliability, practicality, and the like, and can be used for effectively distinguishing abnormal motor noises in practical applications.

The invention relates to an automatic control device, in particular to the automatic control device for a prestressing force tensioning device. The automatic control device comprises a tool anchor piece, a hollow lifting jack which is matched with the tool anchor piece, and a hydraulic pump which is connected with an oil outlet pipe through an oil inlet pipe on the lower part of the hollow lifting jack; the automatic control device is characterized in that: one side of the upper part of the hollow lifting jack is matched with a wireless tension displacement sensor; and a pump body of the hydraulic pump is provided with a secondary control machine which controls an electronic control valve bank and a master control machine and a remote Web server which coordinate all tension end points. The automatic control device has a unique structure, is convenient to operate and use, and can realize the high-precision control measurement of tension amount, improve construction efficiency and accuracy, reduce labor intensity and realize the automation of a prestressed member tensioning device.

The invention relates to the technical field of bearings, in particular to a combined bearing which comprises an upper bearing and a lower bearing, and the upper bearing comprises an upper bearing outer ring and an upper bearing inner ring; one end of the upper bearing inner ring is an inner ring piece; the lower bearing comprises a lower bearing outer ring and a lower bearing inner ring; a shaft piece is arranged at the other end of the upper bearing inner ring, penetrates through the lower bearing inner ring and is locked on the lower bearing inner ring through a locking sleeve; and the upper bearing outer ring is tightly matched with the lower bearing outer ring. The combined bearing with the encoder further comprises an encoder assembly, the encoder assembly comprises a coded disc, a photoelectric assembly and an induction assembly, the coded disc is installed on the inner ring of the upper bearing, the induction assembly is installed on the inner bottom face of the outer ring of the lower bearing, the photoelectric assembly comprises a light source and irradiates the coded disc, and the photoelectric assembly is in circuit connection with the induction assembly. According to the technical scheme, the combined bearing is integrated, the installation links are reduced, the inherent precision of the bearing is ensured, the rotation stability is effectively improved, meanwhile, assembly and disassembly are convenient, maintenance is facilitated, the space is saved through the integrated structure, and the appearance is attractive.

The invention discloses a sensing antenna which comprises an elastic material body with a sealed channel, and normal temperature liquid metal inside the sealed channel, wherein the elastic material body is arranged on an object to be measured; when being subjected to tension action, the sealed channel inside the elastic material body has corresponding deformation along with the deformation of the object to be measured; the liquid metal can flow inside the sealed, so that the resonant frequency of the sensing antenna corresponds to the deformation of the sealed channel. In addition, the invention further discloses a tension measuring device and a load measuring system with the antenna. According to the technical scheme of the invention, the antenna can be applied to moving objects or rotating objects.

The invention provides a keel system in a curtain wall system. The keel system comprises a vertical keel and a transverse keel which are connected; the transverse keel is of a whole section type, is intersected with the vertical keel, and located in front of the obverse side of the vertical keel; and in addition, a bearing base of a curtain wall plate hook is directly formed on the transverse keel. According to the keel system in the curtain wall system, the connection structure of the transverse keel and the vertical keel is simple, mounting is convenient, the transverse keel can be applied to the keel system in a through-length type sectional material mode according to the requirement, and the system structure is complete; in addition, the transverse keel can be combined into the bearing base, the mounting links are reduced, the mounting precision of a curtain wall is improved, and materials and labor cost are more saved; and a vertical upright and a transverse upright can be integrally adjusted and mounted in a three-dimensional mode, operation is convenient, the structure is simple, and manufacturing is easy.

The invention discloses a PDF file online field adding system and method. The PDF file online field adding system comprises a server, the server is installed with PDF file field adding software, which is composed of a PDF file receiving unit, a PDF file display unit, a PDF file coordinate computing unit, a field selecting unit, a field information computing unit, a field adding unit and a database. The method comprises that a user accesses the server via a terminal to upload PDF files to the server, and then through treatment by the server, the PDF files can be online added with fields and content. The PDF file online field adding system and method can be operated only through the terminal to greatly facilitateapplication by the user to a large extent, and meanwhile can automatically generate the PDF files containing fields without recording names, ID (identity) and coordinates of the fields, thereby being simple and convenient to operate. Besides, the PDF file online field adding system and method is high in precision, intuitive and less prone to errors.

The invention provides a portable air conditioner suitable for various occasions, which comprises an indoor unit and an outdoor unit, wherein the indoor unit and the outdoor unit are connected with each other via an indoor and outdoor connecting assembly; fast switching of the indoor and outdoor connecting assembly is realized via a fast connecting component; the indoor unit comprises an automatic drainage system which is characterized in that a water level induction passage is formed on the inner side surface of a clamping groove formed in one end of an indoor unit water-containing plate; an electromagnetic induction switch is in interference fit with an electromagnetic induction switch clamping groove; a floating ball is limited in the water level induction passage; an indoor unit drainage pipe is connected to the water-containing plate; an outdoor unit drainage pipe is connected to an outdoor unit water pump; after the indoor unit drainage pipe and an outdoor unit connecting water pipe are butted via the fast connecting component, an automatic drainage passage is formed; both the electromagnetic induction switch and the water pump communicate with a controller; and the controller controls the on/off of the water pump according to water level information of the electromagnetic induction switch. Due to the automatic drainage system, the portable air conditioner can run continuously to ensure the comfort of a user; and moreover, as manual drainage is avoided, the portable air conditioner is convenient and practical for the user.

The invention discloses a method and a system for acquiring and transmitting multi-dimensional fire data in a wide-area complex environment. The wide-area complex environment is characterized in thatthe covered area is wide, terrain features and building facilities are complex in composition, distribution is irregular, and the environment includes but not limited to forest fire prevention areas,chemical parks, explosion site types. The method comprises the following steps: step 1, quickly deploying a plurality of integrated measurement units from an airport outside a domain in an air-drop manner by utilizing aircrafts to dynamically establish a sensor node network covering a wide-area complex environment, wherein the integrated measurement units are distributed irregularly and include but are not limited to forest fire prevention areas, chemical parks and explosion site types; step 2, realizing multi-dimensional fire data acquisition by utilizing a multi-batch deployment integrated measurement unit; and step 3, realizing self-adaptive data uploading by utilizing satellite communication and a sensor node network. According to the invention, technologies of autonomous airdrop rapiddeployment, multi-dimensional fire data acquisition, adaptive data uploading and the like are integrated, and multi-dimensional fire data acquisition and transmission of a wide-area complex environment are realized.

The invention discloses a tower top assembly of a tower crane. The tower top assembly comprises a tower top and a standard knot connected with the bottom of the tower top, and is characterized in that the tower top and the standard knot are welded into a whole, and a ladder is arranged at the side of the tower top in a welding way; and a plurality of fences which are arranged at intervals are arranged at the side of the ladder in a welding way. The tower top assembly provided by the invention has the advantages that the tower top and the standard knot are welded into a whole instead of originally connecting the two parts into a whole by pin shafts, so that the link of pin shaft installation in the installation process is reduced, the phenomenon of pin hole wear is better avoided, and the service reliability is stronger; and the fences at the side of the ladder are arranged at intervals to play a protective role and also reduce the overall weight of the tower crane.

The invention relates to a wooden floor mounting structure which comprises a wooden floor and a bottom plate placed below the wooden floor, wherein a fixed connecting structure for fixing the wooden floor on the bottom plate is arranged between the bottom surface of the wooden floor and the bottom plate. The wooden floor mounting structure provided his convenient to pave, the wooden floor and the bottom plate are matched with a mute layer, therefore, the connection and soundproof effects are good.

In a traditional wind generating set, power cables from a cabin part to a tower part are fixedly arranged on a U-shaped hanging board on a channel steel beam at the bottom part a cabin by mainly adopting cable sleeve net structures, and as the power cables are respectively bound by cable sleeve nets to form prints, and part of power cables are insufficiently centered, the power cables can be rubbed with a center bushing of a tower top platform during a skewing process, cable sheaths can be easily abraded, and great potential safety hazards are brought. The invention provides a power cable basket structure for a large-sized wind generating set. The power cable basket structure for the large-sized wind generating set comprises the U-shaped hanging board, a round basket, three supports and bolts, wherein the U-shaped hanging board is welded on the channel steel beam at the bottom part of the cabin, and the three supports are connected with the basket and the U-shaped hanging board. Through adopting such the power cable basket structure, the power cables are stressed by the inner wall of the round basket without the cable sleeve nets, and meanwhile, the round basket also plays a role of guiding the cables so as to ensure the power cables to be fully centered when reaching a tower from the cabin, and therefore, the power cable sheaths are protected from abrasion during the skewing process, and the safety of the wind generating set is improved.

The invention discloses a water-seepage-preventing construction method for a garage roof. The water-seepage-preventing construction method comprises the following construction steps: 1, surveying andsetting out are conducted on the built garage roof, and a blind ditch layout line is determined; 2, after a surface layer of the garage roof is subjected to waterproofing treatment, a blind ditch cushion layer is laid on the surface layer of the garage roof to make the cushion layer have a certain gradient in the water collection direction according to the blind ditch layout line; 3, a blind ditchnetwork constituted by a plurality of blind ditches is formed on the blind ditch cushion layer in a bricklaying mode through solid bricks according to the blind ditch layout line, water falling holesor drainage openings are formed in the tail ends, in the water collection direction, of the blind ditches, the water falling holes communicate with a water-collecting well through pipelines, or the drainage openings communicate with a municipal drainage pipe network; and 4, concrete cover plates used for sealing the blind ditches are poured above the blind ditches, and then after earthwork backfilling is conducted on the garage roof, a terrace is formed.

The invention provides a folding ladder with a locking device. The folding ladder with the locking device comprises two hinged ladder bodies and lateral supporting rod arranged on the two sides of the two ladder bodies. The folding ladder with the locking device further comprises a first connecting rod, a second connecting rod and the first locking device, wherein the first connecting rod is movably connected between the first ladder body and the first lateral supporting rod; the second connecting rod is movably connected between the second ladder body and the first lateral supporting rod; the first locking device is used for locking the first connecting rod and/or the second connecting rod and connected with the first connecting rod and/or the second connecting rod; and the first locking device is arranged on the first ladder body or the second ladder body or the first lateral supporting rod. The safety of the ladder is improved.

The invention discloses a novel belt conveyor tail automatic moving device which comprises a plurality of racks and a winding drum seat. Traction connecting lugs, a buffer supporting roller group, cart running rails, observing and flushing ports and connecting plates are arranged on the racks, the traction connecting lugs are arranged on two sides of the front ends of the racks, the buffer supporting roller group is arranged above the racks, the cart running rails are arranged on two sides above the racks, the observing and flushing ports are arranged on two sides below the racks, the connecting plates are arranged on two sides of the rear ends of the racks, and the winding drum seat is connected to the rear ends of the racks and is in bolt connection with the connecting plates. The novel belt conveyor tail automatic moving device is large in transport capacity, small in resistance, low in energy consumption and flexible in extension and contraction, and is high in working face advancing speed and large in transport distance conversion during fully-mechanized coal mining.

The present invention relates to a connection device for radiators that allows the radiator-valve and radiator-lockshield valve to be joined safely, easily and quickly, providing improvements in the scope of the installation, maintenance and environment, wherein the device comprises a reducing plug configured to adapt the radiator outlet to the size of the thread of a valve or a lockshield valve,wherein the reducing plug comprises a first end for joining to the radiator and a second end configured to carry out the coupling with a nut.