85results about How to "Avoid installation difficulties" patented technology

The invention relates to an order tracking method based on nonlinear frequency modulation wavelet transformation. The order tracking method comprises the steps of: firstly, acquiring a vibration signal of a measured rolling bearing through an acceleration or velocity sensor mounted thereon, adopting nonlinear frequency modulation wavelet transformation for carrying out time-frequency analysis on the vibration signal to obtain joint time-frequency distribution of the signal, searching a maximum spectral peak at each moment in the joint distribution to obtain a corresponding instantaneous frequency value, fitting the instantaneous frequency values by utilizing a instantaneous frequency value, and regarding an obtained value as an estimated value of instantaneous frequency; and determining a center and bandwidth of resonant frequency of the vibration signal by utilizing spectral kurtosis, adopting a band-pass filtering method to extract an inherent resonant component, carrying out envelope demodulation on the inherent resonant component, and finally performing uniform angle resampling on the envelope signal by utilizing instantaneous frequency to obtain an order spectrum of the rolling bearing and complete order tracking of the signal.

The invention discloses a high-supported formwork deformation monitoring and early warning method. At least one vertical rod is selected as a high-supported formwork deformation monitoring object and a high-supported formwork deformation monitoring and early warning device is used for carrying out deformation monitoring on a deformation monitoring object; the high-supported formwork deformation monitoring and early warning device is provided with a data acquisition and processing server and deformation measurement components; each node position on the vertical rod corresponding to the deformation measurement component is fixedly provided with a pipe clamp; three universal joints and two rod pieces, corresponding to two adjacent pipe clamps on the vertical rod, are arranged on the deformation measurement component; a tilt sensor, corresponding to each rod piece, is arranged on the deformation measurement component; each tilt sensor is fixed on the corresponding rod piece; and the data acquisition and processing server can calculate the deformation condition of the high-supported formwork on each vertical rod as the deformation monitoring object. Thus, automatic monitoring on the high-supported formwork deformation can be realized on the premise of not influencing the high-supported formwork structure.

A test device for testing control force on the control lever and corresponding shift comprises control level saet, a control force sensor, tilt angle shift sensor, control level and connecting rod connected in the following way: the control force sensor and corresponding tilt angle shift sensor are fixed at both sides of the control lever seat by screws the control lever fixedly connected with the sensitive part of the control force sensor by screws when testing, the control level seat and the sensor fixed on it are sleeved on the tested control level and fixed by screws.

The invention relates to a nuclear power main pump test device. At present, only minority countries master the design technology of nuclear power main pumps around the world. The nuclear power main pump test device is characterized in that a test pump motor is a shielding main pump motor or a shaft seal main pump motor, a shielding main pump shell, a sixth reducing joint, an eighth reducing joint, a first main regulating valve, a seventh reducing joint, a shaft seal main pump shell, a first reducing joint, a second reducing joint, a first damping screen, a first Venturi tube flow meter and a third reducing joint are sequentially arranged on a loop main pipeline, a fourth reducing joint, a second damping screen, a second Venturi tube flow meter and a fifth reducing joint are sequentially arranged on a flow parallel-connection measurement pipe, a ninth reducing joint, a second main regulating valve and a tenth reducing joint are sequentially arranged on a main valve parallel-connection measurement pipe, the shielding main pump motor is arranged on the shielding main pump shell, or the shaft seal main pump motor is arranged on the shaft seal main pump shell. The nuclear power main pump test device has the functions of a test shielding main pump and a shaft seal main pump.

A device for testing control force on vehicle shift lever and corresponding shift comprises control elver seat, a control force sensor, tilt angle shift sensor and a control lever connected in the following way; the control force sensor is fixed at the outer thread of the control lever seat by its internal thread and nut, the tilt angle shift sensor is fixed on the control lever saet by screws, and the control lever is fixedly connected with the control lever seat by screws, and the control lever is fixedly connected with the sensing part of the control ofrce sensor directly. The control lever seat and sensors fixed on it are sleeved on the gearshift control lever and fixed by screws which can simultaneously and synchronously test two directions of control force and tilt angles and striking angle shift between control force and corresponding control lever or control rod.

The invention provides a method for installing a rotary vane type steering engine. The rotary vane type steering engine is installed in a narrow space by using a method comprising the following steps of: combining the steering engine with a steering engine bushing at first, then lowering a rudderstock and integrally lifting the steering engine, and finally, lifting the rudderstock; the non-vertical quality problem of a rudder line and the axis of a propeller resulted from the installation of the steering engine before a main body building is installed can be avoided; or the difficult installation problem of the steering engine in the narrow space after the main body building is installed can be avoided; the installation space height of the steering engine is increased; the stress condition of a chain hoist in the event of transferring the steering engine can be improved; therefore, the accident risk can be reduced; because the steering engine bushing is placed on a bushing support in the event of installing, the steering engine and the steering engine bushing are tightly combined; therefore, the oil leakage fault can be avoided in the event of injecting hydraulic oil; in the priorart, the whole steering engine is installed for 2-2.5 days; but, the steering engine is installed only for 1-1.5 days by using the method disclosed by the invention; therefore, the working efficiencyis increased.

The invention provides a filter net assembly and an air conditioner. The filter net assembly comprises an installation frame and a filter net. The installation frame is used for being connected with an air conditioner body. The filter net is detachably arranged on the installation frame. The installation frame and the filter net are connected through a clamped connection type sliding groove assembly which comprises a sliding groove part and a clamped connection sliding part. The sliding groove part is arranged on the installation frame and comprises a groove portion and an anti-disengagement portion. The anti-disengagement portion is arranged on an opening of the groove portion and provided with a passing groove. The clamped connection sliding part comprises a connection portion and a clamped connection portion which are connected. One end of the connection portion is connected with the filter net, the other end of the connection portion is connected with the clamped connection portion, the connection portion is detachably installed in the passing groove, the clamped connection portion is movably installed in the groove portion, and the anti-disengagement portion prevents the clamped connection portion from being disengaged from the groove portion. By applying the technical scheme, the problem that a filter net of an air conditioner in the prior art is difficult to detach and install is solved.

The invention discloses an integrated external-damage-preventing target identification and intelligent early-warning system, which is composed of remote ends, a server end and mobile ends. The remoteends are monitoring systems installed on power transmission line towers, comprise a plurality of remote end nodes, and are responsible for on-site image acquisition, image transmission and sound-lightalarm; the server end is a power monitoring center server, and is responsible for image real-time processing, intelligent identification, filtering and automatic judgment of abnormal states, and remote and mobile end communication; the mobile ends are mobile intelligent equipment, are responsible for receiving on-site pictures and alarm prompts, and control remote end cameras and a sound-light alarming system. The integrated external-damage-preventing target identification and intelligent early-warning system transmits the acquired on-site images back to the server end in real time, the on-site images transmitted by means of the plurality of remote ends can be processed simultaneously at the server end, and an early-warning processing result is transmitted to the mobile terminals, so as to realize first-time personnel emergency rescue and maintenance, and ensure safe and reliable operation of power facilities.

The invention discloses a device for detecting a safety belt assembly in the front row of a car. The device comprises a base plate, locating plates, locating pieces and support plates. The base plate is provided with reference coordinates in the X direction and the Y direction, the support plates and the locating plates are arranged by being respectively perpendicular to the base plate and perpendicular to the reference coordinates in the Y direction, the locating plates and the support plates are arranged by being parallel to the reference coordinates in the X direction in a front and back manner, the locating plates comprise safety belt lock body locating plates and coiler locating plates, positions where the safety belt lock body locating plates are arranged are consistent with positions of mounting points of a safety belt in the front row of the car, the coiler locating plates are parallel to safety belt lock body locating plates, and are arranged between the safety belt lock body locating plates and the support plates, positions of the coiler locating plates are consistent with mounting positions of a safety belt coiler in the front row of the car, and positions where the locating pieces are arranged on the support plates are consistent with positions of a safety belt slide rail in the front row of the car. According to the invention, the precision of the mounting points of the safety belt assembly of the car and the precision of the telescoping function of the coiler are guaranteed, and the problem that the safety belt is hard to install is solved.

The invention relates to an automobile auxiliary fasia console handrail hinge assembly with the hovering function. The automobile auxiliary fasia console handrail hinge assembly comprises a rotary shaft, a metal shrapnel, a POM shrapnel, a hinge upper tumbler and a hinge lower support, wherein the POM shrapnel is arranged in the metal shrapnel in a sleeving manner and is fastened and connected with the metal shrapnel; the POM shrapnel is arranged in the middle of the rotary shaft in a sleeving manner and is in transition fit with the rotary shaft; the hinge upper tumbler is in interference fitwith the rotary shaft and is used for being connected with a handrail cover plate; and the hinge lower support is in clearance fit with the rotary shaft and is used for being connected with a handrail body. When the rotary shaft and the POM shrapnel have friction, damping work is generated; and the hovering function of the auxiliary fasia console handrail is realized through the twisting force size of the rotary shaft and the POM shrapnel. When the automobile auxiliary fasia console handrail hinge assembly is used, at first, the hinge upper tumbler is connected with the handrail cover plate and then the hinge lower support is fixed on the handrail body. The automobile auxiliary fasia console handrail hinge assembly is firm and reliable in structure; and in addition, the automobile hinge is convenient to mount, so that the problem that mounting is difficult when the hinge is directly fixed on the automobile handrail cover plate is avoided.

The invention provides an assembly method of upper and lower interior walls and floors, including the following steps: S1, prefabricating interior wall shear walls and floors; S2, hoisting and installing: a first interior wall shear wall is hoisted and positioned, a first floor and a second floor are respectively hoisted on the two end faces of the top side of the first interior wall shear wall, asecond interior wall shear wall is hoisted on the top side of the first interior wall shear wall, and the two ends of the bottom side of the second interior wall shear wall are respectively pressed on the supporting ribs on the top sides of the first floor and the second floor; a cavity is formed between the floors and the first and second interior wall shear walls, and longitudinal steel bars, lacing wires and anchoring parts are ingeniously arranged in different ways; and S3, casting connection: concrete is poured into the cavity to form a double-overlapping post-poured connecting beam or adouble-anchorage horizontal post-poured strip which connects the floors and the interior wall shear walls together. The on-site construction work for the connection joint is less. The construction cost is lowered, and the construction period is shortened. The integrality and seismic strength of the building are greatly improved.

The invention provides a wireless base station clock synchronization method. The method comprises the following steps that: a frame is selected as an exchange frame from a wireless base station cluster system; the exchange frame generates a timing reference signal; the timing reference signal is coded in IQ data; the IQ data is sent to a base band frame; the base band frame recovers the timing reference signal from the IQ data, acquires a transmission time delay value of the base band frame and the exchange frame and compensates the recovered timing reference signal according to the transmission time delay value so that the compensated timing reference signal synchronizes with the timing reference signal of the exchange frame; the base band frame generates the timing reference signal which forms synchronization with itself according to the compensated timing reference signal. The invention also provides the wireless base station cluster system, the exchange frame and the base band frame. By using the method and the system, the wireless base station synchronization can be realized without increasing hardware and wiring resources.

The invention discloses an underwater camera which comprises a camera assembly. The camera assembly comprises a main shell composed of a glass cover, a shell and an end cover, a movement arranged in the main shell, and at least two external lamp assemblies arranged on the main shell in a surrounding manner, wherein the movement is opposite to the middle of the glass cover, and the external lamp assemblies are adjusted in many directions and fixed through fastening assemblies. According to the underwater camera, external LED lamps are installed on the shell of the underwater camera, the brightness and the direction of the lamps can be adjusted, disturbance caused by internal arrangement is avoided, power is increased, cost increase and installing difficulty caused when underwater lighting lamps are added are also avoided, and the underwater camera has the advantages of being simple in structure and convenient to machine.

The invention relates to a level instrument and a foundation pile static test system based on static force leveling and a method of a foundation pile static load. A non-contact static level instrument is sampled, the service life is long, stability is good, and anti-interference is high. A datum beam, a datum pile, and a displacement meter are replaced with a measuring static force level instrument, and a datum static force level instrument, the installation difficulty in a traditional method is avoided, good adaptability to the environment is achieved, and normal work can be conducted without special requirements, According to the foundation pile static test system, the distance between a datum point and a measuring point of can be increased to tens of meters, and the effect of the measuring point on the datum point in the process of loading or unloading is excluded completely. According to a measuring method, interference is reduced, errors are reduced, accuracy is improved, measuring is convenient, and adaptability is strong, and the method is suitable for a tension and compression load resistance test of large diameter and tonnage piles, dealt with a load test of composite foundations with a large area, and dealt with a load test of natural foundations and artificial foundations with large areas.

The invention relates to a wireless laser matrix monitoring system and method for surface area deformation observation, belongs to the technical field of surface area deformation observation, and aimsat solving the problems that in the prior art, surface deformation of a mining subsiding area, a landslide area and a crack area cannot be continuously observed. The wireless laser matrix monitoringsystem comprises an M*N field displacement detection array and a base station; in the field displacement detection array, each detection unit is configured with a corresponding target to form a detection node; the field displacement detection array is used for acquiring surface deformation conditions of the positions of all the laser detection units and sending the surface deformation conditions to the base station in a displacement information form; and the base station is sued for sending a driving signal to control the field displacement detection array to conduct data acquisition in a timing mode, receiving the information acquired by the field displacement detection array and conducting data processing on the information. According to the wireless laser matrix monitoring system and method, the surface deformation conditions can be continuously observed, and the installation coupling problem is solved.

The invention discloses a thermal insulation wall for a green and environment-friendly building. The thermal insulation wall for a green and environment-friendly building comprises a wall main body, an inner thermal insulation plate layer, an outer thermal insulation plate layer, an inner fireproof plate layer and an outer fireproof plate layer. The invention further discloses a construction method of the thermal insulation wall for a green and environment-friendly building. The construction method comprise the following steps: positioning and installing the inner thermal insulation plate layer and the outer thermal insulation plate layer through connecting pieces, transverse positioning plates and vertical positioning plates, positioning and fixing the inner thermal insulation plate layer and the outer thermal insulation plate layer through a building formwork on outer sides of the inner thermal insulation plate layer and the outer thermal insulation plate layer, conducting concrete pouring, detaching the building formwork, and fixing and installing the inner fireproof plate layer and the outer fireproof plate. The inner thermal insulation plate layer and the outer thermal insulation plate layer are arranged, the inner thermal insulation plate layer and the outer thermal insulation plate layer are positioned and fixed through the connecting pieces, a mode of conducting fixing and pouring the wall main body can effectively enhance connecting stability between the wall main body, the inner thermal insulation plate layer and the outer thermal insulation plate layer.

The invention discloses an environment-friendly engine oil filter. The environment-friendly engine oil filter comprises a shell body, a filter element is installed in the shell body, an engine oil channel is formed between the filter element and the shell body, an upper cover is installed at the upper end of the shell body, an oil inlet and an oil outlet are formed on the upper cover, the oil inlet communicates with the engine oil channel, the oil outlet communicates with the interior of the filter element, and the lower end of the shell body is provided with a lower cover; the shell body is of a double-layer structure and comprises an inner shell body and an outer shell body, and the inner shell body protrudes outwards to form a reinforcing structure capable of storing impurities; a stirring and decontamination device is installed in the engine oil channel, and an impurity storage chamber is arranged at the lower end of the shell body; and the filter element comprises a piece of filter paper and a filter bag, wherein the filter paper is installed on the upper part of the filter bag, and the filter bag is filled with filter sand. According to the engine oil filter, the shell body is high in strength and not prone to deformation, the filter is provided with a plurality of chambers for storing the impurities, so that the interior of the filter is not prone to blockage, and the service life is long.

An installation tool for an airfoil trim balance weight includes a tool body having a support for supporting the tool body with respect to the trim balance weight. A linear actuator is provided for contacting a tab of the trim balance weight, the linear actuator for moving linearly with respect to the tool body in a linear motion toward the support to permit the tab to bend. A method for installation, a gas turbine engine and a method for manufacturing also are provided.

The invention discloses a turbine small shaft bending vibration and torsional vibration parallel measurement method based on overspeed protection signals, and belongs to the technical field of turbineset vibration measurement and signal processing. According to the method, a plurality of existing overspeed protection signals are used for obtaining bending vibration and torsional vibration signalsof a small shaft of a machine head in parallel, and the technical problem that the vibration of the small shaft of the machine head is difficult to test is solved; and the overspeed protection signals are demodulated in real time such that the bending vibration and torsional vibration states of the small shaft of the machine head are dynamically monitored. Moreover, the method is completely basedon an existing speed measuring gear probe at the small shaft of the machine head, a sensor does not need to be additionally arranged, equipment installation problems are avoided, and the equipment cost is reduced.

The invention relates to a braking device, in particular to an air pump braking resilience device with ABS function, belonging to the technical field of transport tools. The braking device is arranged at the rim space position of an automobile; the energy when in braking is recovered and stored by adopting an air pump resilience mode; the energy in braking is converted into high-pressure gas energy by an air pump for recycle and storage; when the automobile is started, the recovered and compressed air energy is controlled to drive the air pump to rotate so as to release the energy renewedly and drive the automobile to move forward; and an electronic control device of the braking device is connected into an ABS control panel, thus being capable of preventing wheels from locking according to the rotating speed signal. The braking device has compact and convenient structure, lower cost and easy implementation and can fully utilize the energy generated by braking.