301results about How to "Stability is not affected" patented technology

The invention relates to the technical field of data processing, in particular to a data transmission method and system for industrial edge gateways, and the method comprises the steps: obtaining industrial production equipment data, constructing a data queue, and obtaining the busy degree of each edge gateway based on the operation data of the data queue; according to the busy degree of each edge gateway, obtaining transmission results after the different data queues are transmitted to the cloud server, and calculating feedback rewards transmitted by the edge gateways by selecting the different data queues; and on the basis of the feedback rewards, using a UCB algorithm to calculate the confidence coefficient of each queue for transmitting data to the cloud server, and adjusting the data queue through which the edge gateway passes when transmitting the data to the cloud server according to the confidence coefficient. According to the method, the data transmission strategy is dynamically adjusted by monitoring the busy degree of the edge gateway and the transmission result of the data queue in real time, and rapid changes of task frequency, data volume and network conditions are better adapted, so that the data transmission efficiency is improved.

The invention discloses a forming method of an ultra-high molecular weight polyethylene strip, which comprises the following steps: step 1, mixing ultra-high molecular weight polyethylene resin and a low molecular weight solvent to prepare a uniform suspension, then extruding at high temperature, and cooling and shaping to obtain a gel film; step 2, carrying out single-axis high-temperature ultra-time hot stretching on the gel film; 3, extracting the stretched gel film to remove the low-molecular-weight solvent, and drying with hot air to obtain a dried film; 4, longitudinally cutting the dry film to form strips; and step 5, carrying out low-multiple uniaxial thermal stretching on the strip to remove pores so as to obtain the final ultra-high molecular weight polyethylene strip. The gel film is subjected to uniaxial hot stretching under the condition that a low-molecular-weight solvent is not removed, and the low-molecular-weight solvent is beneficial to promoting orientation of fibrous extended-chain crystals reserved in the gel film and formation of high-orientation crystals such as subsequent extended-chain crystals, so that the tensile mechanical property and other properties of a final strip are improved.

The invention discloses a copper pipe cutting method and device.The copper pipe cutting device comprises a workbench, a limiting conveying mechanism and a cutting mechanism, the limiting conveying mechanism comprises a clamping mechanism and a belt conveyor, and the clamping mechanism comprises a box body, a housing and an opposite moving assembly; and the clamping assembly is erected on the top of the housing and connected with the opposite-direction moving assembly, and the housing is arranged on the top of the box body in a sealed mode and defines a containing cavity for installation of the opposite-direction moving assembly. According to the copper pipe cutting method and equipment, by arranging the limiting conveying mechanism and adopting the belt conveyor, horizontal feeding of copper pipe raw materials can be achieved, conveying of copper pipe raw materials of various lengths can be adapted under limiting of the clamping assembly, stability is not affected, meanwhile, rapid switching of positioning and limiting of the copper pipe raw materials can be achieved by means of the opposite moving assembly, and the copper pipe cutting efficiency is improved. And in cooperation with the cutting mechanism, continuous cutting operation of copper pipe raw materials can be completed, and the cutting efficiency is improved.

The invention relates to a modified fly ash-based mining filling material and a preparation method thereof. The material comprises the following components: modified fly ash, lime, cement, gypsum, sodium sulfate, epoxy resin and the like. By using a composite modification system of the nitrogen-containing silane coupling agent, triethanolamine and organic acid, the dispersity of the fly ash is improved, and the fly ash is uniformly distributed in the slurry; lime, gypsum and sodium sulfate are used as excitants, so that the filling material keeps good strength and stability at high temperature, and the risk of structural damage caused by temperature rise is avoided; and meanwhile, the material cannot be excessively embrittled or the strength of the material is not reduced in a low-temperature environment. Besides, due to the excellent bonding performance of the added epoxy resin, the fly ash, the cement and other materials can be effectively glued into a filling body with certain strength and stability, the epoxy resin is also beneficial to reducing the internal stress and deformation of the cured materials, and the long-term stability of the filling body is ensured. The filling material disclosed by the invention is particularly suitable for mine filling and supporting operation, and can provide a reliable filling effect under an extreme temperature condition.

The utility model provides an assembly type leveling support which comprises a bottom plate, a mounting base connected in the bottom plate in an embedded mode, a guide rod connected in an embedded and inserted mode with the interior of a stand column, two ends of the stand column are fixedly connected with a first pressing plate and a second pressing plate respectively, the surface of the stand column is connected with the bottom plate through a tensioning mechanism, and a top plate is fixedly connected with a threaded shaft. The threaded shaft is in threaded sleeve connection with the interior of the stand column. Objects are supported through the detachable assembly type leveling support, the leveling support is convenient to carry and store through disassembly and assembly of a plurality of structures, the problem that an integral leveling support is inconvenient to carry and carry is solved, the bottom plate and the top plate are connected through the stand columns, and the leveling support is convenient to carry and store. By arranging the tensioning mechanism, stable installation of the connecting position can be achieved, meanwhile, the supporting plate is arranged at the bottom of the bottom plate, angle adjustment can be conducted according to the installation position, leveling operation of the platform is conducted on the top plate, the using convenience is improved, meanwhile, the stable performance of the leveling support can be ensured, and the using performance of the leveling support is improved.

The invention belongs to the technical field of ceramic tiles, and particularly discloses a transparent polycrystalline alumina super-wear-resistant diamond glaze ceramic tile and a preparation method thereof.The transparent polycrystalline alumina super-wear-resistant diamond glaze ceramic tile comprises a green body layer, a ground coat layer, a pattern layer and a transparent polycrystalline alumina super-wear-resistant diamond glaze layer from bottom to top; the transparent polycrystalline aluminum oxide super wear-resistant diamond glaze layer is prepared from the following raw material components in parts by weight: 25 to 40 parts of potassium feldspar, 12 to 25 parts of albite, 5 to 15 parts of wollastonite, 5 to 15 parts of kaolin, 3 to 15 parts of quartz, 4 to 20 parts of transparent polycrystalline aluminum oxide and 8 to 25 parts of wear-resistant frit, so that a ceramic tile product can keep hardness and wear resistance in a use process. Besides, the transparent polycrystalline aluminum oxide has good light transmittance and good transparency, does not influence color development of inkjet patterns, and ensures that the surface glaze layer has good light transmittance while increasing the hardness and wear resistance of the surface glaze layer, so that the ceramic tile has good color development and decoration as far as possible.

According to the tension training assembly suitable for the strength training instrument and the strength training instrument, the flexible guide rail is adopted as the flexible movement guide rail of the movable pulley block, and the two ends of the movable pulley block are connected with the suspension wire and the resistance source pull rope correspondingly; a trainee pulls the movable pulley block to slide along a sliding stroke area limited by the flexible guide rail through the suspension wire so as to overcome the resistance of the resistance source pull rope and play a role in strength training. The mode that the movable pulley block is matched with the flexible guide rail perfectly solves the inherent difficulties that a traditional movable pulley metal guide rail is high in price, and left and right guide rails are blocked and unsmooth in the reciprocating motion process, and due to the adoption of the technology that the flexible guide rail is matched with the movable pulley block, the double-end rope outlet function of low-cost single-motor resistance source equipment can be achieved. And compared with the scheme in the market, the equipment cost is greatly reduced, and the use comfort performance is improved. The tension training assembly can be assembled on various rope output strength training instruments, and low-cost electronic strength training equipment is provided.

The utility model relates to the technical field of fixing and supporting, and discloses a fixing and supporting device for house assembly type construction, which comprises a base I and a base II, a guide rod is fixedly connected onto the base I, a limiting block is fixedly connected onto the guide rod, a threaded rod is rotatably connected between the limiting block and the base I, and a threaded rod is fixedly connected onto the threaded rod. A threaded block is in threaded connection with the threaded rod, a connecting long strip is hinged to the threaded block, a supporting rod is hinged to the connecting long strip, the supporting rod is hinged to the limiting block, and the threaded block is slidably connected to the guide rod. According to the fixing and supporting device for house assembly type construction, when the fixing and supporting device for house assembly type construction is used, the motor is started and drives the threaded rod to rotate, so that the threaded hole in the threaded rod ascends, the supporting rod is unfolded to be used for supporting an assembly type component, the stress area is greatly increased, and the component is uniform in stress, not prone to deformation and firm in connection; the overall safety and stability are not affected, operation is easy, and time and labor are saved.

The invention discloses a rotatable closed type sputum suction tube. The closed sputum suction tube comprises a sputum suction tube assembly and a three-way connector connected with the sputum suction tube assembly, the sputum suction tube assembly comprises a sputum suction tube and a thin film protective sleeve arranged outside the sputum suction tube in a sleeving mode, and the three-way connector is provided with a trachea cannula connector, a breathing machine connector and a sputum suction tube connector. The sputum suction pipe is connected with the sputum suction pipe connector through the sputum suction pipe first sleeve connector, and one part of the sputum suction pipe is rotationally connected with the sputum suction pipe first sleeve connector. A rotatable one-way valve is further arranged in the first sleeve connector of the sputum suction pipe, one end of a valve channel of the rotatable one-way valve is fixedly connected with the sputum suction pipe, and a pipeline of the sputum suction pipe is communicated with the valve channel of the rotatable one-way valve. According to the sputum suction tube, the rotatable design is adopted, the position of the tube can be adjusted according to needs, the sputum suction tube is more suitable for a tracheostomy catheter of a patient, the stability of a breathing machine loop is not affected, and meanwhile the problem that the patient feels uncomfortable due to improper height and angle is solved.

The invention discloses a flexible organic field effect transistor respiratory ammonia sensor using modified graphene oxide nanosheets and a preparation method of the flexible organic field effect transistor respiratory ammonia sensor, and belongs to the technical field of gas sensors. The organic light emitting diode sequentially comprises a flexible substrate, a grid electrode, a flexible dielectric layer, an organic semiconductor layer and a source electrode / drain electrode from bottom to top, and raw materials of the organic semiconductor layer comprise poly [(dithiophene)-alternating-(2, 5-bis (2-octyldodecyl)-3, 6-bis (thienyl)-diketopyrrolopyrrole)], an elastomer and modified graphene oxide. The nano material OA-GO containing multiple functional groups has an adsorption effect on target gas, the porous film containing the OA-GO is prepared, the surface area in contact with the gas is increased, more binding sites can be exposed, and finally high-sensitivity and high-selectivity detection of the target gas NH3 is achieved.

The invention provides a ralstonia solanacearum bacteriophage resistant to chemical pesticides and application thereof, and relates to the technical field of biological control. The Ralstonia solanacearum phage RSP35 is preserved in the China Center for Type Culture Collection (CCTCC), and the preservation number of the Ralstonia solanacearum phage RSP35 is CCTCC M 2024498. The bacteriophage has high tolerance to chemical pesticides and strong specificity, can be used for preparing a pharmaceutical preparation for preventing and / or treating bacterial wilt and a pharmaceutical composition for preventing and / or treating bacterial wilt, and provides a feasible scheme for preventing and treating bacterial wilt.

The invention relates to the technical field of molybdenum-copper composite board preparation, in particular to a method for preparing a molybdenum-copper composite board based on a freeze-drying method, which comprises the following steps: preparation of slurry, preparation of a molybdenum skeleton, determination of a copper block, infiltration sintering and post-treatment. According to the method, the problem that two phases of an existing molybdenum-copper composite material are distributed unevenly is effectively solved, the density of the molybdenum-copper composite material is improved, the molybdenum-copper composite material has excellent conductivity, the freeze drying cost is low, and industrial production of the high-performance molybdenum-copper composite plate can be achieved.

The invention relates to the technical field of size measurement, and particularly discloses a TF coil assembly winding size measurement system based on a blue light scanning tracking technology, and the system comprises a frame corresponding to a winding in shape, supporting mechanisms arranged at the outer side of the frame at intervals, and a scanning mechanism moving along the frame. The supporting mechanisms arranged at intervals are used for limiting the frame and the winding, and the supporting assemblies of the supporting mechanisms are used for supporting the winding alternately, so that the supporting stability of the winding is not affected while the scanning assemblies scan all the faces of the winding conveniently, size measurement can be conducted on all the faces of the winding conveniently, and the measurement accuracy is improved. The position of the winding to be scanned is cleaned through the cleaning assembly of the scanning mechanism, dust and the like are prevented from affecting the scanning precision, all the faces of the winding can be cleaned conveniently, and the size measurement precision of all the faces of the winding can be improved conveniently.

The utility model provides a pipe roofing steel pipe locking device which comprises a first pipe roofing steel pipe, a second pipe roofing steel pipe and a water stop grouting locking device. The male lock catch and the female lock catch are externally welded to connect the two pipe roofing steel pipes to form a unified whole, so that the bearing capacity of the pipe roofing is improved, and the danger in the construction process is reduced. The two lock catches adopt arc sections with different radiuses, a certain gap is reserved between the two lock catches, the first pipe-roofing steel pipe and the second pipe-roofing steel pipe are tightly connected together, the stability of the pipe-roofing structure is improved, angle adjustment between the pipe-roofing steel pipes can be achieved by adjusting the lengths of the upper end and the lower end of the female lock catch, pipe roofs of different forms are formed on the premise that the overall stability of the supporting structure is not affected, and the supporting structure is more stable. The construction is simpler and more convenient, the soil body between the pipe roofing structures is reinforced by externally welding the grouting pipes and after grouting, soil body collapse during construction is prevented, the overall leakproofness of the pipe roofing structures is improved, and the stable and continuous waterproof curtain is formed by arranging the grouting holes and the grouting pipes inside and outside and conducting grouting in multiple times.

The invention provides a fermentation process prediction method and system based on a generative algorithm and a terminal, and the method comprises the steps: firstly, comprehensively collecting various fermentation parameters in the whole life cycle of biological fermentation, and carrying out the fine preprocessing of the parameters, thereby constructing a sample data set; then, aiming at the constructed sample data set, deeply mining domain features closely related to the fermentation process, and establishing a model to construct a data set according to the domain features; on the basis, one or more generative algorithms are used, and a staged generative model is constructed according to the model construction data set. Finally, the fermentation process is accurately predicted according to the input fermentation parameters by means of the constructed staged generation model, and then a reliable prediction result is obtained. According to the method, on the basis that the effectiveness of data set division and the stability of model training are not affected, domain features are effectively fused in the modeling process, and the prediction precision and generalization ability of the model are remarkably improved.

The utility model discloses a stainless steel wire rope with an anti-twisting function, and particularly relates to the field of steel wire ropes, the stainless steel wire rope comprises a steel wire rope body, a plurality of fixing sleeves are sleeved in the middle of the steel wire rope body, connecting blocks are symmetrically arranged at two ends of the steel wire rope body, and a lock hook is arranged at one end of each connecting block. The opposite sides of the connecting block and the lock hook are fixedly connected with a fixing block and a connecting disc correspondingly. Firstly, the connecting block is connected with the steel wire rope body, and the lock hook is connected with the connecting block through the fixing block and the connecting disc, so that the stability of the steel wire rope body and the connecting block cannot be influenced when the lock hook rotates, and the lock hook can automatically rotate when the steel wire rope body is straightened from a winding state to generate torsion by pulling the lock hook; and the thread inserting rod is inserted into the thread hole and penetrates through the folded end of the steel wire rope body, so that the steel wire rope body and the connecting block can be conveniently connected and detached, and combined use is facilitated.

The invention discloses a method and a system for selecting a point-to-point path to access a target website. The method comprises the following steps: deploying transit servers in different areas of the Internet; when a user initiates an access request of a target website with a specified domain name, the special browser points the target website with the specified domain name to a port of the proxy module through the PAC according to an access strategy of the special browser, and the proxy module is connected with one of the transit servers through the encryption tunnel according to the access strategy and forwards the access request to the transit server; the transit server forwards the request to a springboard server in a corresponding target side network according to the access strategy; and the springboard server forwards the access request to a target website server corresponding to the target website. According to the method, the target website is accessed in a two-stage proxy mode, the global operation system and a routing table do not need to be modified, a virtual network card does not need to be installed, the stability of other application programs in the system and the stability of the system are not affected, and the access safety and reliability are guaranteed.

The portable seedling supporting device comprises a mounting plate, a mounting cylinder is welded to one side face of the mounting plate, a mounting groove is formed in the lower surface of the mounting cylinder, a sliding groove is formed in one side face in the mounting groove and is in a convex shape, a hydraulic press is welded to the upper surface in the mounting groove, and a lifting block is welded to the end of a driving rod on the lower surface of the hydraulic press; hydraulic devices are installed, installation cylinders, the hydraulic devices and other structures are installed at the four corners of the side face of an installation plate in a mirror image mode, a sliding groove and a sliding block are in sliding fit, a lifting block is reinforced, vertical movement of the lifting block is not affected, and vertical movement of the lifting block can be adjusted by controlling the hydraulic devices; and during moving, four hydraulic devices are controlled to push the universal wheels to stretch out of the mounting grooves to jack up the device, a moving handle is controlled to be matched with the universal wheels to move, and by arranging the structure, the device can be conveniently moved and carried, and the placing stability of the device is not affected.

The invention discloses a composition with an anti-aging effect and a preparation method and application thereof, and belongs to the technical field of cosmetics. The composition is prepared by compounding a traditional Chinese medicine active component, a moisturizing and permeation promoting component and a repairing and anti-aging auxiliary component, and the traditional Chinese medicine active component is composed of three zymolytes and three fermentation extracts which are respectively prepared from six medicinal and edible traditional Chinese medicine raw materials through differentiated composite enzymolysis and probiotic anaerobic fermentation processes. The problems that traditional Chinese medicine extracts are low in transdermal absorption rate, poor in bioavailability and insufficient in cosmetic system stability are solved, active ingredients are small-molecularized through process optimization, a multi-target synergistic anti-aging system is formed by matching with functional components, the anti-aging and repairing composition has excellent anti-aging and repairing effects, physical and chemical stability and skin safety, and the anti-aging and repairing composition has a good application prospect. The composition is suitable for various skin types and can be widely applied to preparation of anti-aging repair cosmetics.

This invention provides an active heating method and system for a two-dimensional turntable servo mechanism, belonging to the field of laser communication technology. The method includes acquiring the feedback temperature and motor torque of the azimuth or pitch axis; when the motor torque is zero and the difference between the feedback temperature and the preset temperature is outside the preset temperature range, heating is performed by determining a first heating power based on the first d-axis current and the electrical control angle; when the motor torque is not zero and the difference between the feedback temperature and the preset temperature is outside the preset temperature range, heating is performed by determining a second heating power based on the second d-axis current and the q-axis current, until the temperature difference returns to the preset range and heating stops. This invention utilizes the heat generated by the motor's own current to replace external heating devices, achieving uniform heating from within, effectively reducing deformation and frictional torque fluctuations in key moving parts caused by temperature gradients, and improving the turning table's pointing accuracy and thermal stability under extreme temperature changes.

This application provides a data migration method, apparatus, control device, and readable storage medium. The method includes: creating a migration link between a source database and a destination database of data to be migrated; splitting the data to be migrated and the migration link, and stopping the splitting if the running status information of the migration link becomes abnormal. In this application, the method of splitting the migration link significantly increases the overall migration rate of the entire data migration; and by obtaining the running status information of the migration link, a controllable increase in the migration rate is achieved, effectively improving the migration speed.

The invention discloses a control method applied to a hydrogen liquefier gas management system. The gas management system comprises a high-pressure pipeline, a low-pressure pipeline, a compressor, a buffer tank and a cold box, an unloading valve is arranged on a pipeline between an inlet of the buffer tank and the high-pressure pipeline, a loading valve is arranged on a pipeline between an outlet of the buffer tank and the low-pressure pipeline, and a first bypass valve is arranged between the high-pressure pipeline and the low-pressure pipeline; the buffer tank is used for storing and releasing hydrogen; the method comprises the steps that the rotating speed of the compressor and the opening degree of the loading valve and the opening degree of the first bypass valve are adjusted based on the air consumption of the cold box; the pressure of the high-pressure pipeline is adjusted by adjusting the opening degree of the loading valve and the opening degree of the unloading valve; and the pressure of the low-pressure pipeline is adjusted by adjusting the opening degree of the first bypass valve. The pressure of the gas management system can be ensured to be stable, and gas can be stably supplied to the liquefaction cold box.

According to the refrigerator and the refrigerator upgrading control method, after the refrigerator is powered on, a controller controls the data transmission rate of the refrigerator to be a first preset transmission rate and controls a wireless communication module to upload current firmware version information of a main control panel to a cloud end at the first preset transmission rate; after a firmware upgrading request issued by the cloud is received, the data transmission rate of the refrigerator is switched to be a second preset transmission rate, the wireless communication module is controlled to download a firmware upgrading package from the cloud at the second preset transmission rate, the firmware upgrading package is verified, and after verification is passed, firmware upgrading is conducted on the main control board according to the firmware upgrading package; wherein the second preset transmission rate is greater than the first preset transmission rate. According to the technical scheme, the data transmission rate of the refrigerator is changed to adapt to the communication conditions of the refrigerator during normal work and firmware upgrading, it can be guaranteed that firmware upgrading of the refrigerator can be rapidly completed within a short time, and the stability of data transmission of the refrigerator is not affected.

The utility model discloses a manual control type electric control device which comprises a device body and a control button arranged at the top of the device body, a protective cover used for protecting the control button is rotatably installed on the upper surface of the device body, a matching assembly part is detachably installed at the bottom of the device body, and a clamping socket is formed in the bottom of the matching assembly part. A jacking stud is installed on one side of the matched assembly part in a penetrating mode, and when the matched assembly part is assembled to a support of mechanical equipment to be controlled, the matched assembly part is fixed through the jacking stud in an auxiliary mode. The control device can provide an additional control structure for the control of mechanical equipment, the bottom of the device main body is detachably provided with the matching assembly part, and the matching assembly part can be replaced and adjusted according to the specific installation position structure of a mechanical equipment support. Therefore, the installation applicability of the device is higher.

The utility model relates to CCD visual scanning technology field, concretely is a kind of CCD visual scanning equipment, including organism, the foot cup is equipped in the organism bottom, the foot cup is equipped with several, the working platform is equipped in the organism top, scanning machine module is equipped on the working platform, scanning machine module setting includes substrate, double Y direction sliding base, double Y direction screw rod, Y direction servo motor, scanning device, X direction servo motor, X direction sliding base, Z direction screw rod, Z direction motor and point gum device, a kind of CCD visual scanning machine of the utility model, through the photographing range and focal length height of line scanning camera setting, equipment will automatically move X axis, Y axis, C axis to the product in range and carry out photographing identification, after setting C axis scanning camera height, photographing identification is completed, and product model and point gum track are set on software, after setting is completed, start, equipment will automatically move X axis, Y axis, C axis moves to the point gum track set and starts point gum valve to complete point gum technology.

The invention relates to the technical field of network equipment, discloses a dynamic networking network equipment operation platform, and solves the problems that an existing server is very troublesome to disassemble and assemble, an operator cannot maintain the server conveniently, the stability of plug connection is influenced by accidental pulling of a line in use, and the use effect is poor. The device comprises a device shell, a device bottom plate is arranged at the bottom of the device shell, a mounting block is fixedly mounted at the top of the device shell, four connecting ports are formed in the rear side of the mounting block, a supporting frame is fixedly mounted at the top of the mounting block, and a driving motor is fixedly mounted at the inner top of the supporting frame; two positioning strips are symmetrically arranged on the upper side and the lower side of the rear portion of the installation block, and silica gel pads are fixedly installed on the sides, close to each other, of the two positioning strips. The server can be quickly disassembled and assembled, an operator can conveniently maintain the server, the stability of plug connection is not affected by accidental pulling of a circuit in use, and the server has a very good use effect.

The utility model discloses a tool for taking out a valve seat of an ammonia injection regulating valve, which comprises a connecting shaft, a positioning ring and a clamping block, a groove is arranged at the bottom of the connecting shaft, a positioning groove is arranged on the outer wall of the connecting shaft, the positioning ring is oppositely arranged inside the positioning groove, and the clamping block is arranged inside the groove. A driving motor drives a connecting supporting column to drive a connecting shaft to rotate, a clamping block is conveniently replaced through cooperation of a groove and a fastening bolt, a positioning ring is conveniently replaced through a positioning groove, the rotating stability of the connecting shaft is not affected, the proper positioning ring can be selected according to a valve inner cavity, and the concentricity of a tool body and a valve seat is guaranteed; the clamping blocks can select proper specifications according to the size of the valve, the valve seat is quickly screwed out through rotation of the driving motor, and quick replacement is achieved.

The utility model discloses a car roof wheel upper beam assembly easy to disassemble and assemble, which comprises two upper beams arranged side by side in parallel, an upper beam connecting plate fixedly connected with the upper beams to keep the upper beams parallel, a car roof wheel with the axis perpendicular to the upper beams and positioned between the two upper beams, and a shaft clamping plate detachably and fixedly mounted on the inner side surfaces of the upper beams, the shaft clamping plate is provided with a supporting hole which allows the end of a wheel shaft of the car roof wheel to penetrate in a matched mode and is located above the upper beam. A shaft clamping plate which is detachably and fixedly installed on the upper beams is arranged between the two upper beams, a supporting hole for a car roof wheel axle to penetrate through is formed in the shaft clamping plate, and the car roof wheel is installed through the shaft clamping plate. The car roof wheel can be disassembled by disassembling the shaft clamping plate, the upper beam body does not need to be disassembled, and the car roof wheel is convenient to disassemble and replace. The two ends of the upper beam connecting plate are fixedly connected with the upper beam, and the stability of the main body structure of the upper beam is not affected in the process of disassembling and assembling the car roof wheel.

The utility model relates to a belt dewatering device which comprises a main body structure frame, water diversion plates and a lifting assembly, a pair of water diversion plates which are arranged in a relatively inclined mode is arranged above the main body structure frame, and the pair of water diversion plates are connected in an inclined mode to form an angular structure; the two sides of the main structure frame are each provided with one lifting assembly, a belt is arranged between the lifting assemblies, and the lifting assemblies are used for lifting the belt to make contact with the lower end face of the water distribution plate or lowering the belt. The belt water removal device has the advantages that the belt water removal device can be applied to ports, mines and bulk cargo belt conveying equipment, the belt water removal device is installed along a belt according to the field operation condition, the lifting assembly adjusts the belt to the proper height, the lifting device is driven to lift the belt to make contact with the lower end face of the water distribution plate, and then the belt water removal device is started. After the belt is lifted to be capable of being combined with the water diversion plates, rainwater on the belt is shunted through the pair of water diversion plates which are relatively inclined.

The present invention relates to a modified fly ash-based mining filling material and a preparation method thereof, wherein the material comprises components such as modified fly ash, lime, cement, gypsum, sodium sulfate and epoxy resin. The dispersibility of fly ash is improved by using a composite modification system of nitrogen-containing silane coupling agent, triethanolamine and organic acid, so that the fly ash is evenly distributed in the slurry; lime, gypsum and sodium sulfate are used as activators, so that the filling material maintains good strength and stability at high temperatures, avoiding the risk of structural damage due to temperature increase; at the same time, the material will not be excessively brittle or have reduced strength under low temperature conditions. In addition, the added epoxy resin can effectively bond materials such as fly ash and cement into a filling body with certain strength and stability due to its excellent bonding properties. The epoxy resin also helps to reduce the internal stress and deformation of the material after curing, ensuring the long-term stability of the filling body. The filling material of the present invention is particularly suitable for mine filling and support operations, and can provide a reliable filling effect under extreme temperature conditions.