22results about How to "Reduce post-maintenance" patented technology

The invention is suitable for the technical field of electric energy conversion, and provides a voltage-sharing control method of a three-level circuit converter and a controller. The method comprises the following steps: acquiring average values of half-bus bias voltage and inductive current of a current switching period and a previous switching period of the three-level circuit converter; determining a duty ratio compensation amount based on the half-bus bias voltage of the current switching period; judging a corresponding compensation direction, a target compensation tube and an integral parameter for eliminating a static error based on the average values of the half-bus bias voltage and the inductive current of the current switching period and the previous switching period; and performing voltage-sharing control on the target compensation tube based on the duty ratio compensation amount, the compensation direction, the target compensation tube and the integral parameter for eliminating the static error so as to perform voltage correction. According to the method provided by the invention, the repeated debugging work of debugging personnel on the grading ring parameters due to the change of the equipment application scene can be avoided, the rectification speed and precision are improved, and the output voltage and current control precision is improved.

The invention relates to the field of intelligent wheelchairs and motor homes, in particular to an intelligent wheelchair storage device used for being additionally arranged on a motor home chassis. The device comprises a garage, a front fixing frame, a rear fixing frame and two lifting mechanisms. Wherein the front fixing frame and the rear fixing frame are used for being fixedly installed on a motor home chassis, and the garage is used for storing the intelligent wheelchair; the two lifting mechanisms are bilaterally symmetrical about the garage; each lifting mechanism comprises three push rods, the fixed ends of two push rods are hinged to the front fixing frame, and the fixed end of the other push rod is hinged to the rear fixing frame. The telescopic ends of the three push rods are hinged to the same side face, in the left-right direction, of the garage, and the hinged center lines are arranged in a triangular shape. On the premise that no transmission exists, the height space is saved, and the space of the motor home is not occupied, stable lifting of the garage and storage of the intelligent wheelchair can be achieved, the use cost is low, and comfort is high.

The invention relates to packaging barrel hollow blow molding equipment based on plastic recovery, and belongs to the technical field of packaging barrel blow molding. Comprising a shell, a forming assembly is arranged at the front end of the shell, a collecting assembly is arranged at the bottom of the forming assembly, a feeding assembly is fixedly connected to the top of the collecting assembly and comprises a supporting frame, the bottom of the supporting frame is fixedly connected with the top of the shell, and a supporting plate is fixedly installed at the tail end of the top of the supporting frame; and a servo motor II is fixedly mounted at the front end of the supporting plate. By arranging the collecting assembly and the feeding assembly, leftover materials are collected through a funnel and a collecting bin, the leftover materials are melted into liquid through a heating rod and a heating ring and then flow into a feeding pipe, at the moment, a first servo motor drives a screw to rotate, and therefore liquid raw materials are discharged into a discharging pipe and a storage box; therefore, the utilization rate of the leftover materials of the plastic raw materials is improved, and the production loss and the cost are reduced.

The present invention relates to a self-leveling concrete for laying floor heating pipelines in buildings and a preparation method thereof, and belongs to the technical field of concrete for buildings. The self-leveling concrete for laying floor heating pipelines in buildings of the present invention contains the following components by weight: 120-150 parts of cement, 80-100 parts of slag powder, 300-350 parts of sand, 150-200 parts of gravel, 3-5 parts of silica sol, 1-1.5 parts of polyoxypropylene glycerol ether, 2-5 parts of water reducer, 15-20 parts of modified microcrystalline cellulose, 20-30 parts of expanded perlite, and 150-180 parts of water. The concrete prepared by the present invention has good fluidity, can be self-leveling, and has good durability and strength. It can be applied to various floor surfaces, backfilling of insulation layers, laying of floor heating pipelines in buildings, and has a long service life.

The utility model relates to a kind of high-rise residential roof solar energy infrastructure, including foundation support and waterproofing membrane layer, waterproofing membrane layer is set on roof structure board by foaming agent pitch layer or concrete pitch layer, insulating layer is laid on waterproofing membrane layer, rigid concrete surface layer is set on insulating layer, foundation support prefabricated support or direct locking support on rigid concrete surface layer. Waterproofing membrane layer exceeds the periphery of foundation support ≥100mm. Foundation support and rigid concrete surface layer are provided with waterproof concrete surface layer. 10-30mm separation joint is set within 100mm outside foundation support root on waterproof concrete surface layer, and oil paste is embedded in separation joint. Its structure is simple, can give consideration to construction convenient, improve original roof waterproofing and thermal insulation performance and reduce maintenance use cost.

This utility model belongs to the field of building engineering technology, specifically relating to a protective edge-guarding groove structure for waterproof membrane. It is used to protect the reserved edge of the waterproof membrane when it is being installed at the edge. The structure includes a folded, integrally formed protective body, comprising an upper protective sheet and a lower protective sheet. A groove is formed between the upper and lower protective sheets to accommodate the reserved edge of the waterproof membrane. The two ends of the two protective bodies can be spliced ​​together to form a whole. By inserting the reserved edge of the waterproof membrane into the groove inside the protective body when it is installed at the edge, the structure effectively protects the waterproof membrane from damage, aging, and contamination during construction, significantly reducing the risk of water seepage, improving the quality of waterproofing construction, and reducing subsequent maintenance and rework costs.

The present invention relates to the technical field of combustion residue treatment, specifically a combustion furnace combustion residue treatment device, including a bearing platform, a support frame, an electrical control box, a feed box and a treatment box, the treatment box is in an inverted trapezoidal shape, and a receiving plate and a scraper mechanism are arranged inside, which are used to clean the residue in the furnace and send it into the feed box, and there is a column bin below the treatment box, equipped with a grinding disc and driven by a motor, and also includes a cooling box, a water storage tank and a storage box to ensure that the materials are evenly mixed and effectively cooled, there are sieve holes between the cooling box and the water storage tank, the water storage tank has a water outlet valve, and a material transmission pipeline is arranged between the cooling box and the storage box, and a lifting plug and a discharge door are provided, so as to provide comprehensive residue treatment and cooling functions. The present invention integrates functions such as cleaning, cooling, mixing, and grinding, and the cooled residue is centrally stored through the storage box, and can be subsequently processed and reused as needed, bringing higher production efficiency, safety and resource utilization.

The present invention relates to the field of motor technology, and in particular to a detachable direct-drive permanent magnet synchronous motor, comprising a permanent magnet synchronous motor body, and a first annular assembly groove is provided on the left side of the outer arc surface of the permanent magnet synchronous motor body. The detachable direct-drive permanent magnet synchronous motor of the present invention has a spiral structure cooling channel connected to the first annular assembly groove and the second annular assembly groove respectively provided inside, and liquid cooling and direct drive are used to quickly dissipate heat, so that the motor can operate at high load for a long time, and the stability is greatly improved; by using a Z-shaped structure to assemble spring sheets on the inner side, a detachable external cover is elastically sleeved on the first annular assembly groove and the second annular assembly groove, thereby improving the lateral shock absorption performance of the permanent magnet synchronous motor, and at the same time, a bottom assembly seat is elastically assembled on the outer side of the detachable external cover, which can improve the lateral shock absorption and reset performance of the entire permanent magnet synchronous motor, thereby greatly improving the overall stability.

The utility model belongs to the field of new energy storage, and particularly relates to a wind energy refrigeration energy storage device which comprises an energy storage machine box, a plurality of vertical pipes are assembled on the energy storage machine box, arc pipes are assembled on the vertical pipes, transverse pipes are assembled on the arc pipes, arc baffles are assembled on the transverse pipes, a plurality of supporting blocks are assembled on the energy storage machine box, and piston pipes are assembled on the supporting blocks. According to the wind energy refrigeration and energy storage device, through cooperation of the rubber pistons and the traction plates, the problem that an existing cooling fan needs to use a driving mechanism to drive fan blades to rotate, the fan blades are driven to rotate, the fan blades are driven to rotate, and the fan blades are driven to rotate is solved. Therefore, the problems that the later maintenance and repair cost of a driving mechanism on the cooling fan is increased, energy conservation and emission reduction are not met, and resources are wasted are solved.

The invention provides a thermal compensation device and method for an electric spindle of a machine tool and a numerical control machine tool, the thermal compensation device comprises a displacement detection device and a control device, a detection part of the displacement detection device is arranged on a tool handle connected with the spindle, and the detection part of the displacement detection device and a detection surface of the tool handle are arranged at an interval in the vertical direction; the detection part of the displacement detection device is opposite to and parallel to the detection surface of the cutter handle; the displacement detection device is used for detecting the thermal displacement of the main shaft in the vertical direction by detecting the distance change between the detection part of the displacement detection device and the detection surface of the cutter handle; and the control device is connected with the displacement detection device, and the control device is used for acquiring data detected by the displacement detection device and adaptively adjusting the position of the main shaft in the vertical direction according to the data detected by the displacement detection device. The thermal compensation device of the machine tool motorized spindle can effectively solve the technical problems that in the prior art, a thermal compensation device of a machine tool motorized spindle is complex in structure and poor in anti-interference capacity.

The utility model discloses an anti-seepage device for air pipe installation, which comprises an air shaft wall and a reserved hole arranged on the air shaft wall, an air pipe which extends out of the reserved hole, is installed in an air shaft and is used for ventilation and exhaust, a water retaining device is arranged above the reserved hole, the water retaining device is connected with a supporting device, and the supporting device is connected with a water pump. The supporting device is connected with the air shaft wall, and a leakage stopping device is arranged between the reserved hole and the air pipe. Through reasonable structural design, material selection and installation mode, multiple sealing of the plugging portion before and after installation of the air pipe is achieved, permeation of rainwater or other liquid is effectively prevented, meanwhile, the device has the advantages of being stable in structure and high in durability, good sealing performance can be kept for a long time, and the service life of the air pipe is prolonged. And a reliable anti-leakage solution is provided for installation or maintenance of the air pipe.

The invention belongs to the technical field of mortar curing, and discloses a mortar curing process, which comprises the following raw material components by weight: 50 kg of cement; 20 kg of water; 80 kg of aggregate; 6 kg of a curing agent; the aggregate is a mixture of quartz sand, lignite and sand in a weight ratio of 4: 2.5: 3.5. The cement, the water, the aggregate and the curing agent are accurately proportioned, so that the comprehensive performance of the mortar is remarkably improved; by adding the curing agent, the moisture balance of the mortar is effectively adjusted, and the phenomenon of too fast dehydration or saltpetering caused by unstable raw material quality and moisture content in the traditional process is avoided; under the condition of proper temperature and humidity, the mortar can be uniformly and stably cured to form a bonding layer with high strength and good durability; according to the process, the construction efficiency is improved, the later maintenance and repair cost is reduced, and powerful support is provided for quality assurance of constructional engineering.

According to the prestress servo supporting system for supporting and loading before foundation pit excavation and the construction method, a transverse supporting mechanism is provided with a supporting rod piece, one end of the supporting rod piece abuts against the inner wall of one side of an enclosure structure, and the other end of the supporting rod piece is provided with a limiting mechanism and loading equipment; and a counter-force frame is detachably mounted at the other end of the supporting rod piece. Transverse loading force can be temporarily provided by means of the counter-force frame, in the process that the counter-force frame provides transverse jacking force, the loading force of the loading equipment can be unloaded, the loading equipment is installed at a preset position after a weak intercalated layer on the surface of the embedded part base plate is cleaned up, then the loading equipment applies the transverse loading force again, and the loading equipment can be used for loading the embedded part base plate. The loading force applied by the loading equipment can directly act on the embedded part base plate of the enclosure mechanism, it is guaranteed that the force can be accurately applied in the magnitude and direction, and the situation that transmission of the transverse loading force is affected by a weak intercalated layer originally existing in a loading area is avoided.

The invention discloses a bolt surface anti-corrosion process, and relates to the technical field of heat treatment processes, the process comprises the following steps: S1, pretreating a bolt workpiece; s2, polishing treatment is conducted, specifically, the bolt workpiece is mixed with rubber balls and silicon carbide particles and then put into a stirrer to be stirred; and S3, co-permeation treatment is conducted, specifically, a permeation agent is prepared, the polished bolt is put into a co-permeation furnace, the permeation agent, an anti-binding agent and an accelerated diffusion agent are evenly stirred and then put into a diffusion tank, and after a sealing cover of the co-permeation furnace is sealed, alloy elements are permeated into the surface of the bolt through a co-permeation heat treatment technology. The bolt surface is pretreated through advanced surface treatment technologies such as workpiece surface greasy dirt removal, rust removal through acid pickling and acid liquid residue removal through water washing, impurities such as greasy dirt and rust on the bolt surface are removed, the cleanliness and roughness of the bolt surface are improved, and therefore the binding force of an anti-corrosion layer and a bolt base body is enhanced, and the service life of the bolt is prolonged. The problem that an anti-corrosion layer is prone to falling off due to untight combination is solved.

The utility model relates to the technical field of industrial and mining equipment, and discloses a crystalline titanium liquid slurry uniform spreading device which comprises a belt conveyor body, a mounting beam is fixed to the discharging end of the belt conveyor body and stretches across a belt, a mounting groove is formed in the bottom of the mounting beam, and the mounting groove extends along the mounting beam. And a counterbore penetrating through the mounting groove is formed in the top of the mounting beam, a bolt is arranged in the counterbore, a clamping block matched with the mounting groove is screwed on the bolt, and the clamping block is used for clamping the upper half part of the scraper into the mounting groove. The scraper device has the advantages that the scraper is fixed to the bottom of the mounting beam through the clamping blocks, the connecting mode is more stable, the scraper is not prone to loosening and falling off, the frequency of later maintenance and adjustment is reduced, and uniform laying of slurry is guaranteed.

The invention discloses a damping reinforced rubber shock absorber and a shock absorption mounting seat with the rubber shock absorber. The damping-reinforced rubber shock absorber comprises a rubber body, an end plate I and an end plate II which are respectively adhered to the top and the bottom of the rubber body, and a plurality of steel plates which are alternately embedded into the rubber body in a vulcanization manner and are used for adjusting the rigidity. A liquid cavity filled with damping liquid is formed in the center of the rubber body, a horizontally-arranged damping plate is arranged in the middle of the liquid cavity, the rubber body is divided into a first rubber body and a second rubber body with the damping plate as the boundary, the liquid cavity is divided into a first liquid cavity and a second liquid cavity which belong to the first rubber body and the second rubber body, and the damping plate is provided with a plurality of vertically-communicated damping holes. The rigidity of the first rubber body is larger than that of the second rubber body, when the vertical pressure borne by the rubber bodies is increased, the volume of the first liquid cavity is forced to be decreased, the volume of the second liquid cavity is forced to be increased, and damping liquid in the first liquid cavity enters the second liquid cavity through the damping holes. The damper has the advantages that a large amount of vibration kinetic energy can be absorbed, and the ideal damping effect far higher than that in the prior art is obtained.

The application discloses a kind of super-high water pressure dewatering well drainage plugging micro-permeation self-draining structure, it includes the steel pipe well being arranged at basement dewatering well mouth, steel pipe well upper end port sealing, steel pipe well upper is equipped with grouting pipe and drainage pipe, steel pipe well is filled with the gradation sandstone being fixed by hardening cement slurry, basement ground is laid from below to above with concrete cushion layer, waterproof layer and bottom slab reinforced concrete layer, bottom slab reinforced concrete layer is equipped with bottom slab post-cast concrete pit, steel pipe well upper end port, grouting pipe and drainage pipe are located in pit, pit is poured with reinforced concrete, pit above is laid with drainage plate extending to catch basin, the top of bottom slab reinforced concrete layer and drainage plate is laid with concrete surface layer.The application further discloses a kind of construction method of the above-mentioned super-high water pressure dewatering well drainage plugging micro-permeation self-draining structure.The purpose is to provide a kind of super-high water pressure dewatering well drainage plugging micro-permeation self-draining structure and its construction method, its well sealing speed is fast, well sealing effect is good, unnecessary maintenance is reduced in later period.

The utility model discloses a molybdenum compound processing pipeline supporting device, which relates to the field of molybdenum compound smelting and comprises a first pipeline limiting clamp and a second pipeline limiting clamp which are detachably connected through a bolt. The first pipeline limiting clamp and the second pipeline limiting clamp are used for clamping and limiting a pipeline passing between the first pipeline limiting clamp and the second pipeline limiting clamp; the bottom end of the first pipeline limiting clamp is connected with a clamp support, and the bottom end of the clamp support is connected with a moving mechanism used for adjusting movement of the clamp support. The supporting device is used for supporting and limiting an outlet pipeline through which molybdenum compounds pass, and the designed supporting device can adjust the position of the outlet pipeline according to needs, so that the molybdenum compounds can smoothly pass through the outlet pipeline to enter a container; by means of the structure, rigid connection of the outlet pipeline can be avoided, certain mobility of the outlet pipeline is achieved, the service life of the outlet pipeline is guaranteed, later maintenance is reduced, and cost is saved.

The utility model relates to a kind of soft soil foundation pile rectification device applied to piling equipment field, including piling equipment component, the side end of piling equipment component is provided with angle monitoring component, accessory moving component is provided outside angle monitoring component, docking firm component is provided in accessory moving component, in the scheme, piling equipment component precision control steel sheet pile strip is beaten into, the reliable data of double monitoring of angle monitoring component is provided, guarantee perpendicularity monitoring accuracy, when detecting to tilt, timely remind operator to stop adjustment, fit safety specification, artificial judgment avoids mechanical automatic rectification excessive, adapt to the characteristics of sudden deviation of soft soil foundation, accessory moving component dynamic adjustment, ensure shift stability, docking firm component guarantees shift accuracy, overall realize side piling side rectification, improve piling efficiency and quality, ensure steel sheet pile strip vertical, enhance soft soil foundation pile structure stability and security, reduce later maintenance, prolong service life.

The utility model belongs to the technical field of edge protection clamps, and particularly relates to a fixing steel pipe edge protection clamp which comprises an inner clamp, a first connecting hole is formed in the inner clamp, and an outer clamp component is connected with the inner clamp in a bilateral symmetry mode and matched with the inner clamp to be arranged corresponding to the inner side and the outer side of a supporting column respectively. The locking part is connected to the inner clamp and the outer clamp part, the distance between the inner clamp and the outer clamp part is changed, the inner clamp and the outer clamp part are locked on the supporting column, the outer clamp part comprises an outer clamp matched with the inner clamp to form a fixing clamp, a second connecting hole is formed in the outer clamp, the second connecting hole corresponds to the first connecting hole, and a locking nut on the side of the inner clamp is rotated. The distance between the inner clamp and the outer clamp is adjusted, the inner clamp and the outer clamp are locked and fixed to a wall pier, then the steel pipe protection frame is fixed, operation is easy, the steel pipe protection frame can be fixed to a wall, firmness and reliability are achieved, detachable design is achieved, turnover use can be achieved, meanwhile, finished product protection in the decoration stage is facilitated, and later maintenance is reduced.

The utility model relates to the technical field of monitoring devices, and discloses a roadbed settlement monitoring device which comprises two measuring rods, the two measuring rods are distributed up and down, the interiors of the two measuring rods are of hollow structures, a plurality of sliding blocks are fixedly installed on the surfaces of the two measuring rods, and a plurality of through grooves are formed in the surfaces of the two measuring rods. According to the monitoring device provided by the utility model, through the guide cooperation of the slide block and the L-shaped groove and the automatic locking structure of the clamping block and the first spring, the rapid splicing and dismounting between the upper and lower measuring rods are realized, the dismounting convenience of the device is improved, the locking can be realized only by aligning the slide block and the L-shaped groove and pressing and rotating the slide block and the L-shaped groove during splicing, the whole measuring rod does not need to be rotated, the field operation intensity is reduced, and the working efficiency is improved. The device can flexibly meet the increasing and decreasing requirements of measuring rod sections with different embedding depths, locking of the clamping block on the sliding block can be relieved only by pulling down the moving ring during disassembly, the problem of thread corrosion clamping stagnation does not need to be solved, the repeated utilization rate of the device is increased, and the field construction efficiency of roadbed settlement monitoring is remarkably improved.